CN114673701A - Control method and circuit for controlling shutter closing of pneumatic nuclear source device - Google Patents
Control method and circuit for controlling shutter closing of pneumatic nuclear source device Download PDFInfo
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- CN114673701A CN114673701A CN202210264581.4A CN202210264581A CN114673701A CN 114673701 A CN114673701 A CN 114673701A CN 202210264581 A CN202210264581 A CN 202210264581A CN 114673701 A CN114673701 A CN 114673701A
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- control valve
- circuit
- emergency stop
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- shutter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/008—Valve failure
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The invention discloses a control method and a control loop for controlling a shutter of a pneumatic nuclear source device to close, wherein the control method comprises the following steps: an emergency stop control valve is arranged in a gas inlet circuit of the gas circuit control loop; an action control valve and a pneumatic actuating mechanism are sequentially arranged in an air inlet of the air circuit control loop along an air inlet direction, and the emergency stop control valve is arranged between the action control valve and the pneumatic actuating mechanism; when the action control valve generates a gas circuit related fault, the emergency stop control valve is controlled to carry out pressure relief operation on the gas circuit control loop, and then the pneumatic actuating mechanism is driven to close the shutter.
Description
Technical Field
The present application relates to a pneumatic nuclear source device, and more particularly, to a method and a circuit for controlling a shutter of a pneumatic nuclear source device to close.
Background
With the continuous progress of the application of nuclear technology, the application is more and more extensive in military, industry and civil use. However, due to the radioactive hazards of the nuclear itself, shutters are generally provided to close the pneumatic nuclear source devices in industrial and civil processes to block the radioactive hazards of the nuclear. If the shutter of the pneumatic nuclear source device cannot be closed, serious nuclear leakage accidents can be caused.
Therefore, how to close the shutter of the pneumatic nuclear source device when the shutter fails to close is an urgent problem to reduce the risk of nuclear leakage.
Disclosure of Invention
The invention provides a control method and a control loop for controlling a shutter of a pneumatic nuclear source device to close, and aims to solve or partially solve the technical problem of how to cause the shutter to close to reduce the risk of nuclear leakage when the shutter of the pneumatic nuclear source device has a closing fault.
In order to solve the technical problem, the invention provides a control method for controlling a shutter of a pneumatic nuclear source device to close, which comprises the following steps:
an emergency stop control valve is arranged in a gas inlet circuit of the gas circuit control loop; an action control valve and a pneumatic actuating mechanism are sequentially arranged in an air inlet of the air circuit control loop along an air inlet direction, and the emergency stop control valve is arranged between the action control valve and the pneumatic actuating mechanism;
when the action control valve generates a gas circuit related fault, the emergency stop control valve is controlled to carry out pressure relief operation on the gas circuit control loop, and then the pneumatic actuating mechanism is driven to close the shutter.
Preferably, the method further comprises: a second electric appliance control loop is incorporated into a first electric appliance control loop of the action control valve, and the emergency stop control valve is arranged in the second electric appliance control loop;
When the action control valve generates circuit-related faults, the second electrical appliance control loop is controlled to be powered off, so that the emergency stop control valve is in an open state, the air circuit control loop is subjected to pressure relief operation, and the pneumatic actuating mechanism is driven to close the shutter.
Preferably, the method further comprises: and controlling the first electric appliance control loop and the second electric appliance control loop to jointly access an emergency stop trigger device so as to control the first electric appliance control loop and the second electric appliance control loop to be powered off.
Preferably, the method further comprises: and arranging an intermediate relay in the second electric appliance control loop so that the electromagnetic coil of the emergency stop control valve and the intermediate relay form a parallel loop, and connecting a contact of the intermediate relay with the electromagnetic coil of the action control valve.
The invention also provides a control loop for controlling the shutter of the pneumatic nuclear source device to close, which comprises the following steps:
the action control valve and the pneumatic actuating mechanism are sequentially arranged in an air inlet channel of the air channel control loop along the air inlet direction;
the emergency stop control valve is arranged between the action control valve and the pneumatic actuating mechanism;
when the action control valve generates a gas circuit related fault, the emergency stop control valve is controlled to carry out pressure relief operation on the gas circuit control loop, and then the pneumatic actuating mechanism is driven to close the shutter.
Preferably, the emergency stop control valve is a single-action normally-open electromagnetic reversing mechanism.
Preferably, the control loop comprises:
the circuit control loop comprises a first electric appliance control loop of the action control valve and a second electric appliance control loop of the emergency stop control valve; the emergency stop control valve is arranged in the second electric appliance control loop;
when the action control valve generates circuit related faults, the second electrical appliance control loop is powered off to enable the emergency stop control valve to be in an open state, so that the air circuit control loop is subjected to pressure relief operation, and the pneumatic actuator is driven to close the shutter.
Preferably, the first electrical appliance control loop and the second electrical appliance control loop are jointly connected to an emergency stop trigger device to control the first electrical appliance control loop and the second electrical appliance control loop to be powered off.
Preferably, in the second appliance control circuit, a solenoid coil of the emergency stop control valve and an intermediate relay form a parallel circuit, and a contact of the intermediate relay is connected to a solenoid coil of the operation control valve.
The invention also provides a pneumatic nuclear source device, which comprises the control loop for controlling the shutter of the pneumatic nuclear source device to close.
Through one or more technical schemes of the invention, the invention has the following beneficial effects or advantages:
the invention provides a control method and a control circuit for controlling a shutter of a pneumatic nuclear source device to be closed.
The above description is only an overview of the technical solutions of the present invention, and the present invention can be implemented in accordance with the content of the description so as to make the technical means of the present invention more clearly understood, and the above and other objects, features, and advantages of the present invention will be more clearly understood.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 shows a schematic diagram of a modification of the pneumatic circuit control circuit according to an embodiment of the present invention;
fig. 2 shows a schematic diagram of a modification of the circuit control loop according to an embodiment of the invention.
Description of reference numerals: the pneumatic nuclear source device comprises an action control valve Y1, an emergency stop control valve Y2, a pneumatic actuating mechanism 1, an elastic element 2, a pneumatic nuclear source device 3, a first electric appliance control circuit L1, a second electric appliance control circuit L2, an emergency stop button S1, a shutter opening button S2, a shutter closing button S3, a shutter opening limit button S4, an intermediate relay KA and a contact KA-1 of the intermediate relay KA.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
In practical applications, referring to fig. 1, the nuclear source is stored in the pneumatic nuclear source device 3, and the nuclear source is exposed during production, and the radiation effect of the nuclear source is used for measurement or other purposes. And the pneumatic nuclear source device 3 controls nuclear source release through a shutter. In the normal state, the shutter of the pneumatic nuclear source device 3 is in the closed state, and the shutter is opened to release the nuclear source when in use. The shutter is mainly opened and closed by a pneumatic actuator 1 (e.g., a cylinder, a motor, etc.). Specifically, the air intake path of the air path control circuit is provided with a motion control valve Y1 and the pneumatic actuator 1, the motion control valve Y1 is used for controlling the air flow in the air intake path, and the motion control valve Y1 is a single-acting two-position three-way electromagnetic directional valve. The pneumatic actuator 1 is connected to the shutter on one side and is provided with a single-acting elastic element 2 on the other side. When the shutter needs to be opened, the action control valve Y1 is powered to conduct the air circuit control loop, the pressurized air drives the pneumatic actuator 1 to drive the shutter to open through the action control valve Y1, and meanwhile, the elastic element 2 is compressed to enable the elastic element 2 to store energy. When the shutter needs to be closed, the control action control valve Y1 is powered off and is communicated with the outside atmosphere, so that the pressure relief operation is implemented on the air inlet side of the pneumatic actuating mechanism 1, and the pneumatic actuating mechanism 1 extends under the action of the elastic potential energy of the elastic element 2, so that the shutter is driven to be closed. In the process of closing the shutter, the motion control valve Y1 may generate a failure related to the air path, for example, a foreign object enters the motion control valve Y1 to jam the valve core, so that the air inlet side of the pneumatic actuator 1 cannot be vented, and the pneumatic actuator 1 cannot close the shutter through the elastic element 2, thereby generating a shutter closing failure, and causing a serious nuclear leakage accident.
Therefore, the application discloses a control method for controlling the shutter of the pneumatic nuclear source device to close, wherein an emergency stop control valve Y2 is additionally arranged in an air inlet path of an air path control loop to provide an additional pressure relief path.
In this embodiment, referring to fig. 1, the air path control circuit is provided with a motion control valve Y1 and a pneumatic actuator 1 in sequence along the air intake direction in the air intake path, and the scram control valve Y2 provided in this application is located between the motion control valve Y1 and the pneumatic actuator 1 to serve as an additional pressure relief passage. In this embodiment, the scram control valve Y2 is a single-acting normally-open electromagnetic directional mechanism, such as the single-acting two-position two-way normally-open electromagnetic directional valve shown in fig. 1, which carries a muffler and is in a closed state when powered and in an open state when powered off.
Therefore, when the action control valve Y1 has a gas circuit related fault, the emergency stop control valve Y2 is controlled to perform a pressure relief operation on the gas circuit control circuit, so that the pneumatic actuator 1 closes the shutter. And in the process of controlling the pressure relief, the emergency stop control valve Y2 is controlled to be opened so as to connect an additional pressure relief channel for pressure relief operation. Therefore, when the nuclear leakage risk caused by the fact that the air inlet path cannot be decompressed and the shutter cannot be closed is faced, the pressure can be quickly decompressed and the shutter can be quickly closed, so that the nuclear leakage risk is reduced, and the nuclear safety is guaranteed.
On the other hand, during the shutter closing process, the operation control valve Y1 may generate circuit related faults, such as contact adhesion, abnormal grounding of the power supply (line, etc.), etc., which may cause the first circuit control circuit L1 where the operation control valve Y1 is located to fail to be powered off, and the operation control valve Y1 may need to be powered off to perform the pressure relief operation, and if the operation control valve Y1 fails to be powered off, the air inlet side of the pneumatic actuator 1 may fail to be relieved, and further a shutter closing fault may be generated, resulting in a serious nuclear leakage accident.
To this end, in the present application, in addition to the above-described embodiment, the second electrical appliance control circuit L2 of the emergency stop control valve Y2 is designed, and referring to fig. 2, the second electrical appliance control circuit L2 is incorporated in the first electrical appliance control circuit L1 of the motion control valve Y1, and the emergency stop control valve Y2 is provided in the second electrical appliance control circuit L2. When the action control valve Y1 generates circuit related faults, the second electrical appliance control loop L2 is controlled to be powered off, so that the emergency stop control valve Y2 is in an open state, the pressure relief operation is carried out on the air circuit control loop, and the pneumatic actuator 1 is driven to close the shutter.
In this embodiment, the scram control valve Y2 has a power-off opening function, and the second electrical appliance control circuit L2 is powered off to enable the scram control valve Y2 to reach an open state for pressure relief operation, and at this time, the pressure relief operation of the scram control valve Y2 is not affected no matter whether the first electrical appliance control circuit L1 is powered off or not, so that the problem of nuclear leakage of the action control valve Y1 when a circuit related fault occurs can be solved, the pressure can be quickly relieved, the shutter can be quickly closed, the nuclear leakage risk is reduced, and the nuclear safety is ensured.
In order to further control the two aforementioned control loops, in the method, the first electrical appliance control loop L1 and the second electrical appliance control loop L2 are controlled to jointly access an emergency stop triggering device (such as the emergency stop button S1 in fig. 2) so as to control both the first electrical appliance control loop L1 and the second electrical appliance control loop L2 to be powered off. In a specific implementation process, if the first electrical appliance control loop L1 cannot be powered off, only the emergency stop triggering device needs to be triggered (for example, the emergency stop button S1 is pressed), so that the power-off operation of the two control loops can be realized. However, in an actual situation, when the emergency stop button S1 is pressed, the first electrical appliance control circuit L1 cannot be powered off, so that the same emergency stop trigger device is adopted to simultaneously control the two electrical appliance control circuits, when the first electrical appliance control circuit L1 cannot be powered off, the second electrical appliance control circuit L2 is powered off to enable the emergency stop control valve Y2 to be opened to perform pressure relief operation, thereby making up a fault caused by the fact that the first electrical appliance control circuit L1 cannot be powered off, and providing a more reliable guarantee for the rapid closing of the shutter in the aspect of the electrical control circuit.
Therefore, the design not only increases the power-off control of the first electric appliance control loop L1, but also considers the situation that the first electric appliance control loop L1 cannot be powered off, and the emergency stop control valve Y2 is enabled to be in an open state to carry out pressure relief operation by powering off the second electric appliance control loop L2, so that the purpose of redundant power-off is achieved, and the fault caused by the fact that the first electric appliance control loop L1 cannot be powered off is made up. In addition, the same scram trigger equipment is used for controlling the two control loops, so that the control cost can be saved.
As an alternative embodiment, an intermediate relay KA is provided in the second electrical appliance control circuit L2, so that the solenoid of the emergency stop control valve Y2 and the intermediate relay KA form a parallel circuit. Furthermore, the parallel loop is simultaneously connected with an emergency stop triggering device, so that the emergency stop triggering device simultaneously controls the emergency stop control valve Y2 and the intermediate relay KA, and the state monitoring of the solenoid coil of the emergency stop control valve Y2 is realized. In the first electrical appliance control loop L1, the shutter open button S2 and the shutter open limit button S4 are simultaneously connected to the emergency stop triggering device.
In order to interlock with the operation control valve Y1, a contact KA-1 of the intermediate relay KA is connected to a solenoid of the operation control valve Y1. Under the design structure, if the second electric appliance control loop L2 is powered off, the contact KA-1 of the intermediate relay KA is triggered to be disconnected, so that the first electric appliance control loop L1 is powered off, and the interlocking power-off function of the two electric appliance control loops is realized. Further, since the contact KA-1 of the intermediate relay KA directly acts on the solenoid of the operation control valve Y1, even if the button contact sticks, the operation control valve Y1 is not affected and the operation control valve Y1 can be set to the deenergized state as long as the contact KA-1 of the intermediate relay KA is opened.
Further, the function of the emergency stop control valve Y2 is to control the shutter to close when the shutter fails, and to eliminate the need for the emergency stop control valve Y2 to operate when the shutter is normally opened and closed. Therefore, in order to ensure the normal use of the shutter, the contact KA-1 of the intermediate relay KA is connected with the solenoid of the motion control valve Y1 to realize interlocking control. Under the design structure, the emergency stop control valve Y2 has an electrified closing function, when the second electric appliance control loop L2 is electrified, the emergency stop control valve Y2 is in a closing state, no pressure relief operation is generated, and the contact KA-1 of the intermediate relay KA is electrified and closed. When the second electric appliance control circuit L2 is energized, the shutter is controlled to open and close by the operation control valve Y1. And if and only if the action control valve Y1 generates an air circuit or circuit related fault, the emergency stop control valve Y2 is controlled to cut off the power and quickly close the shutter.
It can be seen that in the above embodiment, the interlock control of the emergency stop control valve Y2, the intermediate relay KA, and the motion control valve Y1 can ensure both the normal opening and closing of the shutter when power is supplied and the emergency and rapid shutter closing operation when the shutter has a closing failure.
Based on the same inventive concept as the previous embodiment, the following embodiments disclose a control circuit for controlling the shutter of a pneumatic nuclear source device to close, which is improved from both the gas circuit control circuit and the circuit control circuit, so as to rapidly close the shutter when the shutter fails. Referring to fig. 1, a schematic diagram of an improved pneumatic circuit control circuit is shown. An operation control valve Y1 and a pneumatic actuator 1 are provided in this order in the intake direction on the intake path of the air path control circuit. In addition, an emergency stop control valve Y2 is arranged on the air path control circuit and is positioned between the action control valve Y1 and the pneumatic actuator 1 to be used as an additional pressure relief passage. In this embodiment, the motion control valve Y1 is a single-acting two-position three-way electromagnetic directional valve, and when power is supplied, the gas circuit control loop is turned on, so as to drive the pneumatic actuator 1 to open the shutter; when power is lost, the air inlet side of the pneumatic actuating mechanism 1 is decompressed by being communicated with the outside atmosphere, and then the shutter is driven to close. The scram control valve Y2 is a single-acting normally-open electromagnetic directional mechanism, such as the single-acting two-position two-way normally-open electromagnetic directional valve shown in fig. 1, which carries a muffler and is in a closed state when powered on and in an open state when powered off.
On the basis that the air circuit control circuit is provided with the emergency stop control valve Y2, when the action control valve Y1 generates air circuit related faults, the air circuit control circuit is subjected to pressure relief operation by controlling the emergency stop control valve Y2, and then the pneumatic actuator 1 is driven to close the shutter. Therefore, when the loop faces the nuclear leakage risk caused by the fact that the air inlet circuit cannot be decompressed and the shutter cannot be closed, the pressure can be quickly decompressed and the shutter can be quickly closed, so that the nuclear leakage risk is reduced, and the nuclear safety is guaranteed.
In some alternative embodiments, in order to solve the problem that the motion control valve Y1 has circuit-related faults to cause the shutter to be unable to be closed, improvement is also made in the aspect of a circuit control loop. Referring to fig. 2, a modified schematic diagram of the circuit control loop is shown. The circuit control circuit comprises a first electric appliance control circuit L1 of an action control valve Y1 and a second electric appliance control circuit L2 of an emergency stop control valve Y2.
In the first appliance control circuit L1, a shutter open button S2, a shutter close button S3, and a shutter open limit S4 are provided. The shutter open button S2, shutter close button S3, and solenoid of the operation control valve Y1 are connected to control the opening and closing of the operation control valve Y1, thereby opening and closing the shutter. The main function of the shutter open position S4 is to keep the operation control valve Y1 in an open state by the position lock control circuit after the shutter is opened to the right position. If the open limit is lost, the shutter will be automatically powered off and closed based on safety considerations.
If the motion control valve Y1 in the first electrical appliance control circuit L1 cannot be de-energized, the pressure relief operation cannot be performed, resulting in a shutter closing failure. In response to this problem, since the present embodiment provides the emergency stop control valve Y2 in the second appliance control circuit L2; when the motion control valve Y1 has a circuit-related fault, the second electrical appliance control circuit L2 is powered off to open the emergency stop control valve Y2, so as to perform a pressure relief operation on the air circuit control circuit, thereby driving the pneumatic actuator 1 to close the shutter.
It is worth noting that since the scram control valve Y2 has a power-off opening function, the second electrical appliance control loop L2 is powered off to enable the scram control valve Y2 to reach an open state for pressure relief operation, and at this time, no matter whether the first electrical appliance control loop L1 is powered off or not, the pressure relief operation of the scram control valve Y2 is not affected, so that the problem of nuclear leakage of the action control valve Y1 when a circuit related fault occurs can be solved, pressure relief can be performed quickly, the shutter can be closed quickly, the risk of nuclear leakage is reduced, and nuclear safety is guaranteed.
In order to further control the two aforementioned control loops, the first electrical appliance control loop L1 and the second electrical appliance control loop L2 are commonly connected to an emergency stop triggering device, such as an emergency stop button S1 shown in fig. 2, so as to control the first electrical appliance control loop L1 and the second electrical appliance control loop L2 to be powered off. Specifically, if the first electrical appliance control circuit L1 cannot be powered off, the power-off operation of the two control circuits can be realized only by triggering the emergency stop trigger device (e.g., pressing the emergency stop button S1). However, in an actual situation, when the emergency stop button S1 is pressed, the first electrical appliance control circuit L1 cannot be powered off, so that the same emergency stop trigger device is adopted to simultaneously control the two electrical appliance control circuits, when the first electrical appliance control circuit L1 cannot be powered off, the second electrical appliance control circuit L2 is powered off to enable the emergency stop control valve Y2 to be opened to perform pressure relief operation, thereby making up a fault caused by the fact that the first electrical appliance control circuit L1 cannot be powered off, and providing a more reliable guarantee for the rapid closing of the shutter in the aspect of the electrical control circuit.
Therefore, the design not only increases the power-off control of the first electric appliance control loop L1, but also considers the situation that the first electric appliance control loop L1 cannot be powered off, and the emergency stop control valve Y2 is enabled to be in an open state to carry out pressure relief operation by powering off the second electric appliance control loop L2, so that the fault caused by the fact that the first electric appliance control loop L1 cannot be powered off is made up. In addition, the same emergency stop trigger device is used for controlling the two control loops, so that the control cost can be saved.
Specifically, in the second electrical appliance control circuit L2, the solenoid of the emergency stop control valve Y2 and the intermediate relay KA form a parallel circuit, and the parallel circuit is simultaneously connected to the emergency stop triggering device, so that the emergency stop triggering device simultaneously controls the emergency stop control valve Y2 and the intermediate relay KA to monitor the state of the solenoid of the emergency stop control valve Y2. In the first electrical appliance control loop L1, the shutter open button S2 and the shutter open limit button S4 are simultaneously connected to the emergency stop triggering device.
The contact KA-1 of the intermediate relay KA is connected to a solenoid of the operation control valve Y1 to realize interlock control with the operation control valve Y1. Under the design structure, if the second electric appliance control loop L2 is powered off, the contact KA-1 of the intermediate relay KA is triggered to be disconnected, so that the first electric appliance control loop L1 is powered off, and the interlocking power-off function of the two electric appliance control loops is realized. Further, since the contact KA-1 of the intermediate relay KA directly acts on the solenoid of the operation control valve Y1, even if the button contact sticks, the operation control valve Y1 is not affected and the operation control valve Y1 can be set to the deenergized state as long as the contact KA-1 of the intermediate relay KA is opened.
Further, the scram control valve Y2 functions to control the shutter to close when the shutter fails, and does not need the operation of the scram control valve Y2 when the shutter is normally opened and closed. Therefore, in order to ensure the normal use of the shutter, the contact KA-1 of the intermediate relay KA is connected to the solenoid of the operation control valve Y1 to realize the interlock control. Under the design structure, the emergency stop control valve Y2 has an electrified closing function, when the second electric appliance control loop L2 is electrified, the emergency stop control valve Y2 is in a closing state, no pressure relief operation is generated, and the contact KA-1 of the intermediate relay KA is electrified and closed. When the second electric appliance control circuit L2 is energized, the shutter is controlled to open and close by the operation control valve Y1. And if and only if the action control valve Y1 generates an air circuit or circuit related fault, the emergency stop control valve Y2 is controlled to cut off the power and quickly close the shutter.
It can be seen that in the above embodiment, the interlock control of the emergency stop control valve Y2, the intermediate relay KA, and the motion control valve Y1 can ensure both the normal opening and closing of the shutter when power is supplied and the emergency and rapid shutter closing operation when the shutter has a closing failure.
Based on the same inventive concept as the previous embodiment, the following embodiment discloses a pneumatic nuclear source device 3, which comprises a control loop for controlling the shutter of the pneumatic nuclear source device to close according to any one of the previous embodiments. It is noted that the specific control loop in the apparatus has been described in detail in the foregoing embodiments, and therefore, the detailed description thereof is omitted here.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210264581.4A CN114673701B (en) | 2022-03-17 | 2022-03-17 | Control method and loop for controlling shutter of pneumatic nuclear source device to be closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210264581.4A CN114673701B (en) | 2022-03-17 | 2022-03-17 | Control method and loop for controlling shutter of pneumatic nuclear source device to be closed |
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| CN114673701A true CN114673701A (en) | 2022-06-28 |
| CN114673701B CN114673701B (en) | 2025-10-31 |
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| CN114673701B (en) | 2025-10-31 |
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