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WO2022211231A1 - Disjoncteur à vide - Google Patents

Disjoncteur à vide Download PDF

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Publication number
WO2022211231A1
WO2022211231A1 PCT/KR2022/000677 KR2022000677W WO2022211231A1 WO 2022211231 A1 WO2022211231 A1 WO 2022211231A1 KR 2022000677 W KR2022000677 W KR 2022000677W WO 2022211231 A1 WO2022211231 A1 WO 2022211231A1
Authority
WO
WIPO (PCT)
Prior art keywords
tulip
contact
sensor body
power supply
vacuum breaker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2022/000677
Other languages
English (en)
Korean (ko)
Inventor
황승익
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LS Electric Co Ltd
Original Assignee
LS Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LS Electric Co Ltd filed Critical LS Electric Co Ltd
Publication of WO2022211231A1 publication Critical patent/WO2022211231A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/6606—Terminal arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/666—Operating arrangements

Definitions

  • the present invention relates to a vacuum circuit breaker, and more particularly, to a vacuum circuit breaker capable of measuring and monitoring the temperature of a tulip contactor.
  • a vacuum circuit breaker is a device provided to block a circuit when an abnormal current such as an overcurrent, a short circuit, or a ground fault occurs in an extra-high voltage or high voltage distribution line.
  • the vacuum circuit breaker can be operated in closed state or tripped state. In the closed state, the vacuum circuit breaker is energized with an external power source or load. In the trip state, the vacuum circuit breaker is disconnected from external power or load.
  • a vacuum interrupter includes various components. As the vibration damper is activated, the component is activated and heat is generated. In addition, even when an abnormal current is applied from an external power source, excessive heat may be generated in each component of the circuit breaker.
  • the vacuum circuit breaker is generally provided with a temperature sensor for measuring internal or external temperature.
  • the calorific value of a vacuum circuit breaker is different for each part. In this case, damage due to heat is highly likely to occur in a portion having a high calorific value. However, the conventional vacuum circuit breaker has difficulty in sensing the temperature at a specific point.
  • the development of a vacuum circuit breaker capable of measuring and monitoring the temperature of a specific point of the vacuum circuit breaker in real time may be considered.
  • the development of a vacuum circuit breaker capable of measuring and monitoring the temperature of the tulip contactor in real time may be considered.
  • Korean Patent Publication No. 10-1773306 discloses a wireless temperature sensing device for a switchboard. Specifically, a wireless temperature sensing device installed in any one of a tulip contact, a main bus, or a cable terminal of a circuit breaker provided inside a switchboard is disclosed.
  • this type of temperature sensing device is attached to the housing part of the tulip contact. That is, the temperature sensing device is not directly attached to the tulip contact. Accordingly, temperature measurement accuracy may be reduced.
  • Ciba 208296994 discloses a temperature sensor of a switchboard. Specifically, a temperature sensor positioned inside a low-voltage switchgear is disclosed.
  • this type of temperature sensor is also attached to the outside of the circuit breaker and not directly attached to the contactor. Therefore, the accuracy of the temperature sensor is insufficient, and there is a possibility that excessive temperature measurement cost and time are required.
  • Patent Document 1 Korean Patent Publication No. 10-1773306 (2017.08.31.)
  • Patent Document 2 Chinese Patent Publication No. 208296994 (2018.12.28.)
  • One object of the present invention is to provide a vacuum circuit breaker capable of directly measuring the temperature of the contactor of each phase of the tulip.
  • Another object of the present invention is to provide a vacuum circuit breaker provided with a temperature sensor that can be attached to an existing tulip contactor without changing the design of the tulip contactor.
  • Another object of the present invention is to provide a vacuum circuit breaker in which the cost and time required for temperature sensing can be further reduced.
  • Another object of the present invention is to provide a vacuum circuit breaker equipped with a plurality of temperature sensing sensors.
  • Another object of the present invention is to provide a vacuum circuit breaker in which the temperature sensor can be insulated without being energized from the outside of the energized pole.
  • a vacuum circuit breaker includes a energizing pole provided with a tulip contact that is energably connected to an external power source or load; and a temperature sensor disposed adjacent to the tulip contact, wherein the temperature sensor includes: a sensor body having a sensing contact formed on one surface facing the tulip contact; and a fixing band coupled to the sensor body and disposed to surround the tulip contactor, wherein the sensing contact is in contact with a specific point of the tulip contactor to measure a temperature of the specific point.
  • the tulip contactor is formed in a plate shape extending in one direction and includes a plurality of tulip fingers arranged along the circumferential direction of an imaginary circle, and the specific point is located at a portion of the tulip finger.
  • the fixing band may pass through a body band hole formed in the sensor body and be coupled to the sensor body.
  • the temperature sensor may include a power source that supplies a power source, is spaced apart from the sensor body, and is energably coupled to the sensor body.
  • the fixing band may be formed of a metal material, and the power unit may receive a magnetic field generated from the tulip contactor through the fixing band to generate electrical energy.
  • the fixing band may pass through a band hole formed in the power supply unit and be coupled to the power supply unit.
  • the temperature sensor may include a coupling line disposed between the sensor body and the power supply unit, coupled to the sensor body and the power supply unit, respectively, and curved and extending in a predetermined direction.
  • the bonding wire may be formed of a conductive polymer material.
  • the temperature sensor may include: an input unit configured to collect temperature data from the sensing contact; a data processing unit for receiving and organizing temperature data from the input unit; and a communication unit that receives the organized data from the data processing unit and transmits it to the outside.
  • the input unit, the data processing unit, and the communication unit may be disposed to be spaced apart from the sensor body and the power supply unit.
  • the input unit, the data processing unit, and the communication unit may be built in a space formed inside the sensor body.
  • the fixing band, the inner diameter may be formed to be the same as the outer diameter of the contactor of the tulip.
  • a temperature sensor is directly attached to the tulip contactor. Specifically, a temperature sensor is directly attached to the tulip contactor of each phase.
  • the temperature of the tulip contact of each phase can be directly measured. At this time, different heat sources of the vacuum circuit breaker overlap and are not measured.
  • the accuracy of temperature data can be further improved. Furthermore, the maintainability of the vacuum circuit breaker can be increased.
  • the temperature of the tulip contactor of each phase can be easily measured and monitored in real time.
  • the fixed band of the temperature sensor is formed in a ring shape.
  • a fixing band is arranged to surround the tulip contactor. That is, the fixing band is attached to the outer periphery of the tulip contact.
  • the temperature sensor can be attached to the existing tulip contactor without changing the design of the tulip contactor.
  • the temperature sensor can be installed in a narrow space where the busbar and the tulip contact are combined.
  • the temperature sensor measures and monitors the temperature at a specific point of the tulip contact. Accordingly, a separate temperature measurement for the entire vacuum circuit breaker is not required.
  • the cost and time for temperature sensing of the vacuum circuit breaker can be further reduced. Furthermore, an additional device for storing the image data of the thermal imaging camera is also not required.
  • a plurality of temperature detection sensors may be provided in one vacuum circuit breaker. That is, temperatures for a plurality of specific points can be simultaneously measured.
  • the user can collect and check the temperature for the tulip contactor in each phase. Accordingly, work convenience for measuring and monitoring the temperature of the vacuum circuit breaker can be further improved.
  • the temperature sensor is located inside the housing portion of the energized pole. Specifically, the temperature sensor is positioned adjacent to the tulip finger of the energized pole.
  • the temperature sensor may be insulated without being energized from the outside of the energized pole. Accordingly, it is possible to prevent an abnormal current such as an overcurrent from being generated in the temperature sensor. Furthermore, damage to the temperature sensing sensor can be prevented.
  • FIG. 1 is a perspective view showing a vacuum circuit breaker according to an embodiment of the present invention.
  • FIG. 2 is a perspective view illustrating an energized pole provided in the vacuum circuit breaker of FIG. 1 .
  • Fig. 3 is a side view showing the energized pole of Fig. 2;
  • FIG. 4 is a perspective view illustrating a plate portion, an energized pole terminal, a coupling member, and a tulip contactor provided in the energized pole of FIG. 2 .
  • Fig. 5 is a side view showing the plate portion, the energized pole terminal, the coupling member and the tulip contact of Fig. 4;
  • 6A is a plan view showing the plate portion, the energized pole terminal, the coupling member, and the tulip contact of FIG. 4 .
  • 6B is a plan view illustrating a plate portion, a energized pole terminal, a coupling member, and a tulip contact according to another embodiment of the present invention.
  • FIG. 7 is a perspective view illustrating the tulip contactor of FIG. 4 .
  • FIG. 8 is a side view showing the tulip contactor of FIG. 7 .
  • FIG. 9 is a side cross-sectional view illustrating the tulip contact of FIG. 7 .
  • Fig. 10 is a front view showing the tulip contact of Fig. 7;
  • FIG. 11 is an exploded perspective view illustrating the tulip contactor of FIG. 7 .
  • FIG. 12 is a perspective view illustrating a tulip finger provided in the tulip contactor of FIG. 7 .
  • FIG. 13 is a perspective view illustrating the tulip finger of FIG. 12 .
  • FIG. 14 is a perspective view illustrating a temperature sensor provided in the vacuum circuit breaker of FIG. 1 .
  • FIG. 15 is a front view showing the temperature sensor of FIG. 14 .
  • FIG. 16 is a perspective view illustrating a coupling line, a power supply unit, and a sensor body provided in the temperature sensor of FIG. 14 .
  • FIG. 17 is a front view illustrating the coupling line, the power supply unit, and the sensor body of FIG. 16 .
  • FIG. 18 is a bottom view illustrating the coupling line, the power supply unit, and the sensor body of FIG. 16 .
  • 19 is a front view illustrating a temperature sensor according to another embodiment of the present invention.
  • top”, “bottom”, left”, “right”, “front side” and “rear side” used in the following description will be understood with reference to the coordinate system shown in FIGS. 1 and 12 .
  • FIGS. 1 to 13 a vacuum circuit breaker 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 13 .
  • the vacuum circuit breaker 1 may allow or block an energized state between an external power source and a load. To this end, the vacuum circuit breaker 1 is electrically connected to an external power source and load. In other words, an external power source and a load may be electrically connected by the vacuum circuit breaker 1 .
  • the vacuum circuit breaker 1 includes a frame portion 10 , a mechanism assembly 20 , an energized pole 60 and a temperature sensor 70 .
  • the frame part 10 forms the outer shape of the vacuum circuit breaker 1 .
  • the frame part 10 is a part to which the vacuum circuit breaker 1 is exposed to the outside.
  • a space is formed inside the frame part 10 .
  • Various components for operating the vacuum circuit breaker 1 may be accommodated in the space.
  • the various components may be surrounded by the frame unit 10 and not be exposed to the outside.
  • the mechanism assembly 20, the energized pole 60 and the temperature sensor 70 are accommodated in the inner space of the frame part 10 .
  • the frame part 10 includes an upper frame 110 and a side frame 120 .
  • the upper frame 110 is disposed on one side of the frame unit 10 , in the illustrated embodiment, on the upper side.
  • the upper frame 110 is disposed to cover the space formed inside the frame part 10 from the upper side.
  • the upper frame 110 is formed in a rectangular plate shape in which an extension length in the front-rear direction is longer than an extension length in the left-right direction.
  • the corners of the upper frame 110 are continuous with the side frame 120 , respectively.
  • a plurality of upper frames 110 may be provided. At this time, the plurality of upper frames 110 are spaced apart from each other.
  • the side frame 120 forms the side, in the illustrated embodiment, the left, right, front side and rear side of the frame portion 10 .
  • the side frame 120 covers the space formed inside the frame part 10 from the left side, the right side, the front side, and the rear side.
  • the side frame 120 is formed in the shape of a column extending in the vertical direction.
  • One edge of the side frame 120 in the extending direction is continuous with the upper frame 110 .
  • the upper edge of the side frame 120 is continuous with the upper frame 110 .
  • a plurality of side frames 120 may be provided. At this time, the plurality of side frames 120 are spaced apart from each other. In the illustrated embodiment, the three side frames 120 are arranged side by side along the left and right direction.
  • an energized pole insert that can accommodate the energized pole (60).
  • the energized pole insert that can accommodate the energized pole 60 is formed on the outer peripheral surface of the front side of the side frame 120 .
  • the energized pole insertion hole accommodates the energized pole 60 so that the energized pole 60 communicates with the external and internal spaces of the side frame 120 .
  • a space for accommodating the energized pole 60 is formed inside the energized pole insert. That is, the energized pole 60 is coupled through the energized pole insertion hole.
  • the energized pole insertion hole extends in the same direction as the extension direction of the energized pole 60 .
  • the energized pole insert is extended in the front-rear direction.
  • the energized pole insert is disposed to surround the energized pole 60 . That is, the energized pole 60 is surrounded by the energized pole insertion port.
  • a plurality of energized pole inserts may be provided.
  • the number of energized pole inserts is the same as the number of energized poles 60 coupled to the side frame 120 .
  • the mechanism assembly 20 controls the vacuum circuit breaker 1 to operate in the closed state or tripped state.
  • the mechanism assembly 20 is rotated to form a energized state between the vacuum circuit breaker 1 and an external power source or load, or cut off energization.
  • the mechanism assembly 20 is accommodated in the space formed inside the frame portion 10 .
  • the mechanism assembly 20 may be rotatably actuated in the space.
  • the mechanism assembly 20 is connected to the link portion and the spring portion.
  • the mechanism assembly 20 may be rotationally operated together with any one or more of the link part and the spring part.
  • the link portion is rotated as the mechanism assembly 20 is actuated, thereby operating the vacuum circuit breaker 1 in the closed state or the tripped state.
  • the link portion is connected to the mechanism assembly 20 .
  • the linkage may rotate with the components of the mechanism assembly 20 as they rotate.
  • the link part is rotatably coupled to the frame part 10 .
  • the link unit converts a horizontal linear motion of the main shaft connected to the mechanism assembly 20 into a vertical linear motion with respect to the ground.
  • One end of the link unit is connected to an end of the main shaft.
  • the other end of the link portion is coupled to the spring portion.
  • the spring part moves linearly as the link part rotates to contact and separate the VI fixed contact and VI movable contact.
  • the spring part is connected to the link part.
  • the spring part may move in a straight line as the link part rotates.
  • the spring part is connected to the VI.
  • the spring portion is connected to the VI movable contact. Accordingly, as the spring portion is moved, the VI movable contact is moved together.
  • a vacuum interrupter (VI) is accommodated in the space formed inside the frame part 10 to allow or block the flow of current. Specifically, VI allows the passing of current when the VI fixed contact and the VI movable contact are in contact, or the VI fixed contact and the VI movable contact are spaced apart to cut off the current.
  • VI is coupled to the spring portion.
  • the components of VI can be contacted or separated as the spring part is moved.
  • VI includes VI fixed contact and VI movable contact.
  • the VI fixed contact is connected to an external power source or load so that it can conduct electricity.
  • the vacuum circuit breaker 1 can be electrically connected to an external power source or load.
  • the VI fixed contact is accommodated inside the side frame 120 . That is, the VI fixed contact is surrounded by the side frame 120 .
  • the VI fixed contact may be in contact with or spaced apart from the VI movable contact, thereby applying or blocking current conduction between the inside and the outside of the vacuum circuit breaker (1).
  • the VI fixed contact does not move in the inner space of the frame portion 10 . Accordingly, the contact and separation of the VI fixed contact and the VI movable contact is achieved by the movement of the VI movable contact.
  • VI movable contact is connected to an external power source or load so that it can conduct electricity. Also, the VI movable contact is energably connected to or disconnected from the VI fixed contact.
  • the VI movable contact is accommodated inside the side frame 120 . That is, the VI movable contact is surrounded by the side frame 120 .
  • the VI movable contact is linearly moved and can be in contact with or separated from the VI fixed contact. Specifically, the VI movable contact may be moved in a direction toward the VI stationary contact or away from the VI stationary contact.
  • the VI movable contact When the VI movable contact is moved in the direction toward the VI fixed contact, the VI movable contact and the VI fixed contact are in contact. At this time, current may be applied between the external power source and the load.
  • the energizing pole 60 energizes VI and an external power source or load. To this end, the energizing pole 60 is energably connected to the VI and an external power source or load.
  • the energized pole 60 is through-coupled to one side of the side frame 120 . Specifically, the energized pole 60 is through-coupled to the energized pole insertion hole of the side frame 120 .
  • a plurality of energized poles 60 may be provided. In the illustrated embodiment, three pairs of energized poles 60 are arranged side by side in the left and right direction.
  • the number of energizing poles 60 may be determined according to the type of power system in which the vacuum circuit breaker 1 of the present invention is provided.
  • the vacuum circuit breaker 1 is provided in a power system using a three-phase circuit of R-phase, S-phase and T-phase. Accordingly, three pairs of energizing poles 60 are also provided in accordance with the three-phase circuit.
  • the energized pole 60 includes a housing portion 610 , a plate portion 620 , a energized pole terminal 630 , a coupling member 640 and a tulip contact 650 .
  • the housing part 610 forms the exterior of the energized pole 60 .
  • the housing portion 610 is a portion to which the energized pole 60 is exposed to the outside.
  • the housing part 610 is formed in a cylindrical shape extending in one direction. In the illustrated embodiment, the housing part 610 is formed in a cylindrical shape extending in the front-rear direction.
  • a hollow is formed inside the housing part 610 .
  • a portion of the energized pole terminal 630 and the tulip contact 650 may be accommodated in the hollow. That is, a portion of the energized pole terminal 630 and the tulip contactor 650 is surrounded by the housing unit 610 .
  • the housing 610 may be formed of an insulating material.
  • the housing unit 610 may be formed of a synthetic resin material. Accordingly, it can be prevented that the inside and outside of the energized pole 60 is arbitrarily energized.
  • the plate portion 620 is a portion in which the energized pole 60 is directly coupled to the VI. Specifically, the plate part 620 is electrically coupled to the VI.
  • the plate part 620 is formed in a plate shape.
  • the plate part 620 is formed in a rectangular plate shape in which an extension length in the front-rear direction is longer than an extension length in the left-right direction.
  • the plate part 620 may be formed of a conductive material.
  • the plate part 620 may be formed of copper (Cu), silver (Ag), or the like.
  • the plate portion 620 is formed with a coupling hole.
  • the coupling hole is a space through which a member for coupling between the plate part 620 and VI is coupled.
  • a plurality of coupling holes may be provided.
  • the energized pole terminal 630 is coupled. In the illustrated embodiment, the energized pole terminal 630 is coupled to one end of the front side of the plate portion 620 .
  • the energized terminal 630 energizes the plate portion 620 and the tulip contact 650 .
  • the energizing terminal 630 is energably coupled to the plate portion 620 and the tulip contact 650, respectively.
  • the energized pole terminal 630 is formed in a plate shape extending in one direction. In the illustrated embodiment, the energized pole terminal 630 is formed in a plate shape extending in the front-rear direction. However, the energized pole terminal 630 is not limited to the illustrated shape, and may be formed in various shapes.
  • the energized terminal 630 is accommodated in the space formed inside the housing portion (610). That is, the energized pole terminal 630 is surrounded by the housing portion (610).
  • One end of the energized pole terminal 630 is coupled to the tulip contactor (650).
  • one end of the front side of the energized pole terminal 630 is coupled to the tulip contact (650).
  • the energized pole terminal 630 is coupled to the tulip contact 650 by a coupling member 640 .
  • the coupling member 640 is disposed between the energized pole terminal 630 and the tulip contactor 650 and is coupled to the energized pole terminal 630 and the tulip contactor 650 , respectively. Accordingly, the coupling of the energized pole terminal 630 and the tulip contactor 650 may be more robust.
  • the coupling member 640 is not limited to the illustrated shape, and may be formed in various shapes. In one embodiment, the coupling member 640 may be coupled to the energized pole terminal 630 and the tulip contact 650 in a bolt-nut coupling manner.
  • the coupling member 640 may be formed of a high-rigidity material.
  • the coupling member 640 may be formed of a metal material.
  • the tulip contactor 650 is a part in which the vacuum circuit breaker 1 is in direct contact with the terminal of an external power source or load.
  • the tulip contactor 650 is electrically connected to a terminal of an external power source or load. Accordingly, current may pass through the tulip contactor 650 .
  • a current is passed through the tulip contactor 650 , a magnetic field is generated in the tulip contactor 650 .
  • the generated magnetic field is transmitted to the temperature sensor 70 through a fixing band 710 to be described later. A detailed description thereof will be given later.
  • the tulip contact 650 includes a retaining ring 651 , a contact plate 652 , a toothed ring 653 , and a tulip finger 654 .
  • the fixing ring 651 further increases the contact force between the tulip contactor 650 and the terminal of an external power source or load.
  • the fixing ring 651 is positioned to surround the outer circumferential surface of the tulip finger 654 . Specifically, the fixing ring 651 is located in the fixing ring fastening groove 654a of the tulip finger 654 .
  • the fixing ring 651 is formed in a ring shape.
  • the center of the fixing ring 651 and the center of the tulip finger 654 are formed to be the same.
  • the retaining ring 651 supports the tulip finger 654 radially outward, and prevents any disengagement of the tulip finger 654 .
  • the diameter of the fixing ring 651 is formed smaller than the outer diameter of the tulip finger (654). Accordingly, the contact force between the tulip finger 654 and the external terminal may be further increased.
  • a plurality of fixing rings 651 may be provided.
  • the four fixing rings 651 are arranged side by side along the front-rear direction.
  • a contact plate 652 and a toothed ring 653 are positioned radially inside the retaining ring 651 and the tulip finger 654 .
  • the contact plate 652 is positioned so as to be in contact with a terminal of an external power source or load.
  • the contactor plate 652 is connected to the energized main terminal 630 and energized, and the external power source or load and the energized main terminal 630 are energized.
  • the contact plate 652 may be formed in a plate shape. In the illustrated embodiment, the contact plate 652 is formed in a disk shape. However, the contact plate 652 is not limited to the illustrated shape, and may be formed in various shapes. For example, the contact plate 652 may be formed in a ring shape.
  • the contact plate 652 may be formed of a conductive material.
  • the contact plate 652 may be formed of copper (Cu), silver (Ag), or the like.
  • the toothed ring 653 prevents twisting or flow of the tulip finger 654 .
  • the toothed ring 653 is positioned radially inside the tulip finger 654 . Specifically, the toothed ring 653 is in contact with the inner circumferential surface of the tulip finger 654 . Accordingly, the toothed ring 653 can support the tulip fingers 654 radially inward.
  • the toothed ring 653 may be formed of a high-rigidity material.
  • the toothed ring 653 may be formed of a metal material.
  • a plurality of toothed rings 653 may be provided.
  • the two toothed rings 653 are arranged side by side in the front-rear direction.
  • the toothed ring 653 is formed in a ring shape in which a plurality of teeth 653a are formed on the outer circumferential surface. At this time, the inner diameter of the toothed ring 653 is formed smaller than the inner diameter of the tulip finger 654 .
  • the teeth 653a are formed to protrude radially outward of the toothed ring 653 .
  • a tulip finger 654 is coupled between two adjacent teeth 653a. Specifically, the toothed fastening groove 654b of the tulip finger 654 is engaged with the depression between the two adjacent teeth 653a.
  • the teeth 653a are formed so that a cross-section of a rectangle extends in the front-rear direction.
  • the teeth 653a are not limited to the illustrated shape, and may be formed in various shapes.
  • the sawtooth 653a may be formed by extending a triangular cross-section in one direction.
  • a plurality of teeth 653a may be provided. At this time, the number of teeth 653a is formed to be the same as the number of tulip fingers 654 .
  • the tulip finger 654 increases the contact force between the terminal of an external power source or load and the vacuum circuit breaker 1 .
  • a plurality of tulip fingers 654 may be provided.
  • the plurality of tulip fingers 654 are arranged along the circumferential direction of the virtual circle. In the illustrated embodiment, the plurality of tulip fingers 654 are all formed in the same shape.
  • a fixing ring 651 is coupled to the radially outer side of the tulip finger 654 .
  • a contact plate 652 and a toothed ring 653 are coupled to the radially inner side of the tulip finger 654 .
  • the radially outer side of the tulip finger 654 is supported by the fixing ring 651
  • the radially inner side is supported by the contactor plate 652 and the toothed ring 653 .
  • the tulip fingers 654 are formed in a plate shape extending in one direction. In the illustrated embodiment, the tulip fingers 654 extend in an anterior-posterior direction.
  • a fixing ring fastening groove 654a is formed on the upper side of the tulip finger 654
  • a toothed fastening groove 654b and a terminal contact part 654c are formed on the lower side of the tulip finger 654 .
  • the fixing ring fastening groove 654a prevents the fixing ring 651 from being arbitrarily separated from the coupling point.
  • the fixing ring fastening groove 654a is disposed adjacent to the fixing ring 651 . Specifically, the fixing ring fastening groove (654a) is in contact with the inner peripheral surface of the fixing ring (651).
  • the fixing ring fastening groove 654a is recessed downward from the upper surface of the tulip finger 654 .
  • the fixing ring fastening groove 654a is formed in a shape corresponding to the inner periphery of the fixing ring 651 .
  • a plurality of fixing ring fastening grooves 654a may be provided. At this time, the number of fixing ring fastening grooves 654a is formed to be the same as the number of fixing rings 651 . In the illustrated embodiment, the four fixing ring fastening grooves 654a are arranged side by side in the front-rear direction.
  • the toothed fastening groove 654b makes the coupling between the toothed ring 653 and the tulip finger 654 more robust. To this end, the toothed fastening groove (654b) is engaged with the toothed ring (653).
  • the tooth fastening groove 654b is disposed adjacent to the tooth 653a of the tooth ring 653 . Specifically, the tooth fastening groove (654b) is in contact with the depression formed between the two adjacent teeth (653a).
  • the toothed fastening groove 654b is recessed upwardly from the lower surface of the tulip finger 654 .
  • the tooth fastening groove 654b is formed in a shape corresponding to the tooth 653a.
  • a plurality of toothed fastening grooves 654b may be provided. At this time, the number of the toothed fastening grooves 654b is formed to be the same as the number of the toothed ring 653 . In the illustrated embodiment, the two toothed fastening grooves 654b are arranged side by side in the front-rear direction.
  • the terminal contact portion 654c is a portion in direct contact with the outer peripheral surface of the external terminal.
  • the terminal contact portion 654c is disposed adjacent to the outer peripheral surface of the external terminal. Also, the terminal contact portion 654c supports the external terminal radially outward.
  • the terminal contact portion 654c is formed to protrude downward from the lower surface of the tulip finger 654 .
  • the terminal contact portion 654c is formed to protrude roundly. Specifically, the terminal contact portion 654c is formed to protrude in a semicircular shape.
  • a plurality of terminal contact portions 654c may be provided. In the illustrated embodiment, a total of two terminal contact portions 654c are respectively provided at both ends of the front side and the rear side of the tulip finger 654 .
  • the temperature sensor 70 according to an embodiment of the present invention will be described with reference to FIGS. 14 to 18 .
  • the temperature sensor 70 measures and monitors the temperature at a specific point of the vacuum circuit breaker 1 in real time.
  • the temperature sensor 70 is accommodated in the space formed inside the frame 10 .
  • the temperature sensor 70 is accommodated in the space formed inside the housing portion 610 of the energized pole (60).
  • the temperature sensor 70 may be coupled to the energized pole 60 to measure the temperature for a specific point of the energized pole 60 .
  • the temperature sensor 70 is disposed adjacent to the tulip contactor 650 . Specifically, the temperature sensor 70 is disposed to surround the tulip contact 650 .
  • the temperature sensor 70 includes a fixing band 710 , a coupling wire 720 , a power supply unit 730 , and a sensor body 740 .
  • the fixing band 710 fixes the sensor body 740 to the energized pole 60 . Specifically, the fixing band 710 fixes the sensor body 740 to the tulip contactor 650 .
  • the fixing band 710 is disposed to surround the tulip contact 650 .
  • the inner periphery of the fixing band 710 is arranged to be in contact with the outer periphery of the tulip contactor 650 .
  • the inner diameter of the fixing band 710 is formed to be the same as the outer diameter of the tulip contact (650).
  • the fixing band 710 may pass through the power unit band hole 731 of the power unit 730 and the body band hole 742a of the sensor body 740 . That is, the fixing band 710 may be coupled through the power supply 730 and the sensor body 740 . Therefore, it is preferable that the cross-sectional area of the fixing band 710 is smaller than the cross-sectional area of the power unit band hole 731 and the body band hole 742a.
  • the fixing band 710 is formed in a ring shape.
  • the fixing band 710 is not limited to the illustrated shape, and may be formed in various shapes.
  • the fixing band 710 serves as a passage for the magnetic field generated in the tulip contactor 650 .
  • the fixing band 710 may be formed of a flexible conductive material.
  • the fixing band 710 may be formed of a metal material.
  • a plurality of fixing bands 710 may be provided.
  • two fixing bands 710 may be provided.
  • the coupling line 720 transfers electrical energy from the power supply unit 730 to the sensor body 740 .
  • the coupling line 720 is disposed between the power supply unit 730 and the sensor body 740 , and is coupled to the power supply unit 730 and the sensor body 740 , respectively. That is, one end of the coupling line 720 is coupled to the power supply unit 730 and the other end to the sensor body 740 . In addition, the coupling line 720 is electrically connected to the power supply unit 730 and the sensor body 740 , respectively.
  • the distance between the power supply unit 730 and the sensor body 740 may be constantly maintained by the coupling line 720 . Furthermore, it is possible to prevent the power supply unit 730 and the sensor body 740 from being arbitrarily separated from a preset point.
  • the power supply unit 730 and the sensor body 740 may be provided in plurality.
  • a power supply unit 730 may be provided.
  • the power supply unit 730 may be disposed in the center, and the first sensor body 740a and the second sensor body 740b may be disposed on both sides of the same. In this case, the accuracy of temperature data collection may be improved due to the first and second sensor bodies 740a and 740b disposed on both sides.
  • the power supply unit 730 may be arranged in two or more, and the sensor body 740 may be arranged as one.
  • both the power supply unit 730 and the sensor body 740 may be arranged in two or more.
  • a configuration having a function other than the power supply unit 730 and the sensor body 740 may be disposed to be spaced apart from the fixing band 710 together with the power supply unit 730 and the sensor body 740 .
  • the size of each may be reduced.
  • the area in which the power supply unit 730, the sensor body 740, and the like are coupled to the ring shape is narrowed, so that the coupling can be made more easily.
  • an area may be further reduced than when a single sensor body is provided.
  • the coupling line 720 is formed as a curved line extending in a predetermined direction. In the illustrated embodiment, the coupling line 720 extends in the radial direction of the tulip contact 650 .
  • the coupling line 720 is formed in a shape corresponding to the outer periphery of the tulip contact (650).
  • the coupling line 720 may be formed of a flexible conductive material.
  • the bonding line 720 may be formed of a conductive polymer material.
  • a plurality of coupling lines 720 may be provided. As the number of coupling lines 720 increases, the power supply unit 730 and the sensor body 740 may be more firmly fixed to each other. In the illustrated embodiment, two coupling lines 720 are provided. Each coupling line 720 is disposed to be spaced apart from each other.
  • the power source 730 supplies a power source for operating the temperature sensor 70 .
  • the power supply unit 730 is spaced apart from the sensor body 740 .
  • the power supply unit 730 is coupled to the sensor body 740 with the coupling line 720 interposed therebetween. That is, the power supply unit 730 is coupled to one end of the coupling line 720 . Accordingly, the distance between the power supply unit 730 and the sensor body 740 may be constantly maintained by the coupling line 720 .
  • the power source 730 may be accommodated in the sensor body 740 .
  • the power supply unit 730 is coupled through the fixing band 710. Accordingly, the magnetic field generated by the tulip contactor 650 may be transmitted to the power supply unit 730 through the fixing band 710 .
  • the power supply unit 730 supplies the electric energy received from the fixed band 710 as a power source of the temperature sensor 70 . Specifically, the power supply unit 730 supplies electrical energy to the sensor body 740 through the coupling line 720 . That is, the electrical energy is transferred to the sensor body 740 after sequentially passing through the power source 730 and the coupling line 720 .
  • the power supply unit 730 is formed in a rectangular parallelepiped shape.
  • the power supply unit 730 is not limited to the illustrated shape, and may be formed in various shapes.
  • the power supply unit 730 may be formed in a spherical shape.
  • the power supply band hole 731 is formed on the left and right sides of the power supply unit 730 .
  • the power band hole 731 is a space through which the fixing band 710 is coupled. To this end, it is preferable that the cross-sectional area of the power band hole 731 is larger than the cross-sectional area of the fixing band 710 .
  • the power unit band hole 731 is formed on one side of the power unit 730 and the other side opposite to the one side.
  • the power unit band hole 731 is formed to extend in the left and right direction with an elliptical cross section.
  • the power supply band hole 731 is not limited to the illustrated shape, and may be formed in various shapes.
  • the power unit band hole 731 may be formed by extending a polygonal cross section.
  • a plurality of power supply band holes 731 may be provided. At this time, the number of the power band hole 731 is formed to be the same as the number of the fixing band 710 .
  • the sensor body 740 processes the temperature data collected from the sensing contact 743a and transmits it to the outside of the vacuum circuit breaker 1 .
  • the sensor body 740 is disposed adjacent to the tulip contact 650 of the energized pole 60 . Specifically, the sensor body 740 is disposed adjacent to the outer periphery of the tulip finger 654 .
  • the sensor body 740 is coupled to the tulip contactor 650 .
  • the sensor body 740 is coupled to the tulip contactor 650 by the fixing band 710 .
  • the fixing band 710 passes through the sensor body 740 and closely couples the sensor body 740 and the tulip contactor 650 .
  • a coupling line 720 is coupled to one side of the sensor body 740 .
  • the coupling line 720 is coupled to the left side of the sensor body 740 .
  • a space for accommodating various components is formed inside the sensor body 740 .
  • the space may include a power supply unit 730, an input unit, a data processing unit, and a communication unit.
  • the sensor body 740 is divided into a body front part 741 , a body side part 742 , and a body bottom part 743 .
  • the body front part 741 , the body side part 742 , and the body bottom part 743 form the front side, left and right sides, and the lower boundary of the sensor body 740 , respectively.
  • the body side portion 742 extends from the left and right ends of the body front portion 741 to the rear side. That is, the main body side part 742 is continuous with the left or right end of the main body front part 741 .
  • a body band hole 742a is formed in the body side portion 742 .
  • the body band hole 742a is a space through which the fixing band 710 is coupled. To this end, it is preferable that the cross-sectional area of the body band hole 742a is larger than the cross-sectional area of the fixing band 710 .
  • the body band hole 742a is formed on one side of the sensor body 740 and the other side opposite to the one side.
  • the body band hole 742a is formed to have an elliptical cross-section extending in the left and right directions.
  • the body band hole 742a is not limited to the illustrated shape, and may be formed in various shapes.
  • the body band hole 742a may be formed by extending a polygonal cross-section.
  • a plurality of body band holes 742a may be provided. At this time, the number of body band holes 742a is formed to be the same as the number of fixing bands 710 .
  • the body bottom portion 743 extends from the lower end of the body front portion 741 to the rear side. That is, the main body bottom portion 743 is continuous with the lower end of the main body front portion 741 .
  • a sensing contact 743a is formed on the bottom surface portion 743 of the body.
  • the sensing contact 743a is a part where the temperature sensor 70 directly measures the temperature.
  • the sensing contact 743a transmits temperature data to an input unit provided inside the sensor body 740 .
  • the sensing contact 743a is formed on one surface of the sensor body 740 facing the tulip contact 650 . Specifically, the sensing contact 743a is formed to protrude toward the tulip contact 650 from one surface of the sensor body 740 facing the tulip contact 650 .
  • the sensing contact 743a is in contact with a specific point at which temperature is to be measured.
  • the sensing contact 743a may be in contact with the upper side of the tulip contactor 650 to measure the temperature of the tulip contactor 650 .
  • the sensing contact 743a is formed to protrude downward from the bottom surface of the body 743 .
  • the sensing contact 743a is formed with a circular cross-section extending downward.
  • the sensing contact 743a is not limited to the illustrated shape, and may be formed in various shapes.
  • the sensing contact 743a is formed with a polygonal cross-section extending downward.
  • a plurality of sensing contacts 743a may be provided.
  • the different sensing contacts 743a are disposed to be spaced apart from each other, and the temperature of the different points is measured.
  • the temperature sensor 70 may further include an input unit, a data processing unit, and a communication unit.
  • the input unit, the data processing unit, and the communication unit may be disposed to be spaced apart from the power supply unit 730 and the sensor body 740 .
  • the input unit, the data processing unit, and the communication unit may be coupled to the power supply unit 730 and the sensor body 740 by a coupling line 720 , respectively.
  • the input unit, the data processing unit, and the communication unit may be accommodated in a space formed inside the sensor body 740 .
  • the input unit collects temperature data measured by the sensing contact 743a, and transmits it to the data processing unit.
  • the data processing unit organizes the data received from the input unit, and then transmits it to the communication unit.
  • the communication unit transmits the data received from the data processing unit to the outside of the vacuum circuit breaker 1 .
  • the user can check the data transmitted from the communication unit to measure and monitor the temperature of the vacuum circuit breaker 1 .
  • embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

La présente invention concerne un disjoncteur à vide apte à mesurer et à surveiller la température d'un contacteur tulipe, le disjoncteur à vide comprenant : une colonne conductrice ayant un contacteur tulipe ; et un capteur de détection de température. Le capteur de détection de température comprend : un corps principal de capteur ayant un contact de détection formé sur une surface de celui-ci faisant face au contacteur tulipe ; et une bande de fixation couplée au corps principal de capteur et disposée de façon à entourer le contacteur tulipe, le contact de détection étant en contact avec un point spécifique du contact tulipe de manière à mesurer la température du point spécifique.
PCT/KR2022/000677 2021-03-31 2022-01-13 Disjoncteur à vide Ceased WO2022211231A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2021-0042101 2021-03-31
KR1020210042101A KR102674082B1 (ko) 2021-03-31 2021-03-31 진공 차단기

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WO2022211231A1 true WO2022211231A1 (fr) 2022-10-06

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KR (1) KR102674082B1 (fr)
WO (1) WO2022211231A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
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KR100883042B1 (ko) * 2007-08-20 2009-02-09 엘에스산전 주식회사 온도센서를 구비한 기중차단기
US20140027408A1 (en) * 2012-07-26 2014-01-30 Lsis Co., Ltd. Circuit breaker
KR101773306B1 (ko) * 2016-12-19 2017-08-31 신승현 배전반의 무선 온도 감지 장치
KR20170003589U (ko) * 2016-04-07 2017-10-17 엘에스산전 주식회사 진공 차단기의 튤립 접촉자 구조
KR101907149B1 (ko) * 2017-07-19 2018-10-12 센서나인(주) 배관설치용 온도센서 구조체

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109036991B (zh) * 2018-07-27 2019-09-10 国网湖南省电力有限公司 断路器触头、断路器以及高压开关柜

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100883042B1 (ko) * 2007-08-20 2009-02-09 엘에스산전 주식회사 온도센서를 구비한 기중차단기
US20140027408A1 (en) * 2012-07-26 2014-01-30 Lsis Co., Ltd. Circuit breaker
KR20170003589U (ko) * 2016-04-07 2017-10-17 엘에스산전 주식회사 진공 차단기의 튤립 접촉자 구조
KR101773306B1 (ko) * 2016-12-19 2017-08-31 신승현 배전반의 무선 온도 감지 장치
KR101907149B1 (ko) * 2017-07-19 2018-10-12 센서나인(주) 배관설치용 온도센서 구조체

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