CN112161146A - Shared pigging connecting device and shared pipeline - Google Patents
Shared pigging connecting device and shared pipeline Download PDFInfo
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- CN112161146A CN112161146A CN202010876167.XA CN202010876167A CN112161146A CN 112161146 A CN112161146 A CN 112161146A CN 202010876167 A CN202010876167 A CN 202010876167A CN 112161146 A CN112161146 A CN 112161146A
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- 238000007790 scraping Methods 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims description 41
- 238000011144 upstream manufacturing Methods 0.000 claims description 27
- 239000010865 sewage Substances 0.000 claims description 12
- 238000010926 purge Methods 0.000 claims description 11
- 241000282887 Suidae Species 0.000 claims description 2
- 239000010985 leather Substances 0.000 description 15
- 238000004140 cleaning Methods 0.000 description 6
- 239000001993 wax Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/46—Launching or retrieval of pigs or moles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
- B08B9/0551—Control mechanisms therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/023—Y- pieces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe
- F16L41/16—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of a wall or to the axis of another pipe the branch pipe comprising fluid cut-off means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/24—Preventing accumulation of dirt or other matter in pipes, e.g. by traps, by strainers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/48—Indicating the position of the pig or mole in the pipe or conduit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/10—Treating the inside of pipes
- F16L2101/12—Cleaning
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cleaning In General (AREA)
Abstract
本文提供了一种共享清管连接装置和共享管线。共享清管连接装置包括：斜三通，斜三通包括水平管段和倾斜管段，倾斜管段的一端连接在水平管段的侧壁上，水平管段上形成第一端口和第二端口，倾斜管段上形成第三端口，第三端口的轴线与第二端口的轴线的夹角为120～150度；和包括中心柱和刮削皮碗的清管器，刮削皮碗设置在中心柱的两端，水平管段和倾斜管段的内径相同，刮削皮碗与斜三通为过盈配合；其中，清管器的长度、中心柱的直径和斜三通的内径按照设定数据表相匹配，这样清管器可通过倾斜管段进入水平管段内，实现清管器在120～150度的折线管线内进行输送。
This paper provides a shared pigging connection device and a shared pipeline. The shared pigging connection device includes: an inclined tee, the inclined tee includes a horizontal pipe section and an inclined pipe section, one end of the inclined pipe section is connected to the side wall of the horizontal pipe section, the first port and the second port are formed on the horizontal pipe section, and the inclined pipe section is formed. The third port, the included angle between the axis of the third port and the axis of the second port is 120 to 150 degrees; and a pig including a central column and a scraping bowl, the scraping bowl is set at both ends of the central column, and the horizontal pipe section The same as the inner diameter of the inclined pipe section, the scraping cup and the inclined tee are interference fit; among them, the length of the pig, the diameter of the central column and the inner diameter of the inclined tee are matched according to the set data table, so that the pig can be By sloping the pipe section into the horizontal pipe section, the pig can be transported in the broken line of 120-150 degrees.
Description
Technical Field
This document relates to the field of petroleum equipment technology, and more particularly, to a shared pigging connection and a shared pipeline.
Background
The crude oil pipeline comprises an upstream pipeline, a lower oil pipeline, a pipe cleaner receiving device and a connecting tee joint, wherein the upstream pipeline is connected with the lower oil pipeline and the pipe cleaner receiving device through the connecting tee joint. After the upstream pipeline transports the fluid, the inner wall of the upstream pipeline may condense a wax layer, which may reduce the transport capacity of the upstream pipeline.
The existing method for removing the wax layer comprises the following steps: in putting into the pipeline of upper reaches with the dredging pipe ware, promote the dredging pipe ware through the pressure of conveying fluid and carry along upstream pipeline onward, the wax layer of adhesion on the pipeline inner wall of upper reaches can be scraped to the in-process that the dredging pipe ware moved forward to with paraffin propelling movement to in the dredging pipe ware receiving arrangement. If the cleaning pig is blocked in the crude oil pipeline, the normal operation of the crude oil pipeline is affected, so the existing upstream pipeline and the cleaning pig receiving device must be connected into a straight pipeline, an upstream pipeline is required to be provided with the cleaning pig receiving device, and the equipment cost of the original pipeline is extremely high.
Disclosure of Invention
The embodiment of the invention provides a shared pigging connecting device which can realize the conveying of a pipe cleaner in a broken line pipeline.
The embodiment of the invention provides a shared pipeline.
The sharing pigging connecting device provided by the embodiment of the invention comprises: the inclined tee joint comprises a horizontal pipe section and an inclined pipe section, one end of the inclined pipe section is connected to the side wall of the horizontal pipe section, a first port and a second port are formed in the horizontal pipe section, a third port is formed in the inclined pipe section, and an included angle formed by the axis of the third port and the axis of the second port is 120-150 degrees; the pipe cleaner comprises a central column and scraping leather cups, the scraping leather cups are arranged at two ends of the central column, the inner diameters of the horizontal pipe section and the inclined pipe section are the same, and the scraping leather cups are in interference fit with the inclined tee; the length of the pipe cleaner, the diameter of the central column and the inner diameter of the inclined tee joint are matched according to a set data table, so that the pipe cleaner enters the horizontal pipe section through the inclined pipe section.
Optionally, the size of the inclined tee is 4 inches, the length of the pipe pig is 122-211 mm, and the diameter of the central column is 60-80 mm.
Optionally, the size of the inclined tee is 6 inches, the length of the pipe cleaner is 183-316 mm, and the diameter of the central column is 92-114 mm.
Optionally, the size of the inclined tee is 8 inches, the length of the pig is 237-414 mm, and the diameter of the central column is 126-160 mm.
Optionally, the interference rate of the scraping cup and the inclined tee joint is not more than 5%.
The shared pipeline provided by the embodiment of the invention comprises a downstream pipeline, a pipe cleaner receiving device, a connecting tee joint, N upstream pipelines and N shared pipe cleaning connecting devices in any one of the embodiments; the N horizontal pipe sections are sequentially connected to form a connecting pipeline, a second port of the horizontal pipe section positioned on the upstream side on the connecting pipeline is connected with a first port of the horizontal pipe section positioned on the downstream side, and the first port of one end of the connecting pipeline is closed; the downstream pipeline with the pig receiving arrangement passes through the connection tee with the second port of the connection pipeline other end is connected, N the upstream pipeline is with N third port one-to-one is connected, in order to realize N the pig one-to-one is from N the upstream pipeline passes through N behind the slope pipeline section, follows the connection pipeline passes through the connection tee gets into in the pig receiving arrangement.
Optionally, a first ball indicator is connected to each of the N third ports.
Optionally, the connecting tee is a pigging tee.
Optionally, a first pressure detection device, a first switch valve and a temperature detection device are sequentially arranged on the downstream pipeline, and the first pressure detection device is located between the first switch valve and the connecting tee.
Optionally, a second on-off valve is provided between the pig receiving device and the pigging tee.
Optionally, the entrance point of the pig receiving device is provided with a first pressure detection port, a ball passing detection port, a first drain port, a purging port and a first balance port, the second pressure detection device is connected to the first pressure detection port, the second ball passing indicator is connected to the ball passing detection port, the first drain valve is connected to the first drain port, and the purging valve is connected to the purging port.
Optionally, the outlet end of the pig receiving device is provided with a second pressure detection port, an air release port, a second sewage discharge port and a second balance port, a third pressure detection device is connected to the second pressure detection port, the air release valve is connected to the air release port, a second sewage discharge valve is connected to the second sewage discharge port, a balance pipeline is connected between the first balance port and the second balance port, and the balance pipeline is further connected to the downstream pipeline through an outlet valve.
Optionally, the middle part of the pig receiving device is provided with a pressure relief opening, and the pressure relief valve is connected to the pressure relief opening.
Optionally, the shared pipeline further comprises: and the first blowdown valve, the second blowdown valve and the pressure release valve are also connected to the blowdown pipeline.
According to the shared pigging connecting device provided by the embodiment of the invention, the inclined tee comprises a horizontal pipe section and an inclined pipe section, one end of the inclined pipe section is connected to the side wall of the horizontal pipe section, a first port and a second port are formed on the horizontal pipe section, a third port is formed on the inclined pipe section, the included angle between the axis of the third port and the axis of the second port is configured to be 120-150 degrees, the length of a pig, the diameter of a central column and the inner diameter of the inclined tee are matched according to a set data table, so that the pig can enter the horizontal pipe section through the inclined pipe section, and the pig can be conveyed in a broken line pipeline of 120-150 degrees.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a schematic cross-sectional view of a mitre joint in a shared pigging connection apparatus according to an embodiment of the present invention;
fig. 2 is a schematic front view of a pig in the shared pigging connection apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a shared pigging connection device according to an embodiment of the present invention, with a tee cut away;
fig. 4 is a hydraulic schematic diagram of a shared line according to an embodiment of the invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:
100 inclined tee, 110 horizontal pipe section, 111 first port, 112 second port, 120 inclined pipe section, 121 third port, 130 connecting pipeline, 131 connecting valve, 200 pig, 210 center column, 220 scraping leather cup, 300 downstream pipeline, 301 first pressure detection device, 302 first switch valve, 303 temperature monitoring device, 400 connecting tee, 500 upstream pipeline, 601 first ball indicator, 602 second switch valve, 701 second pressure detection device, 702 second ball indicator, 703 first blowoff valve, 704 purge valve, 711 third pressure detection device, 712 blow-off valve, 713 second blowoff valve, 714 balance pipeline, 715 outlet valve, 721 relief valve, 800 blowoff pipeline, 900 pig receiver, 910 quick-opening blind plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
As shown in fig. 1 to 3, the shared pigging connection device provided in the embodiment of the present invention includes: the inclined tee joint 100 comprises a horizontal pipe section 110 and an inclined pipe section 120, one end of the inclined pipe section 120 is connected to the side wall of the horizontal pipe section 110, a first port 111 and a second port 112 are formed in the horizontal pipe section 110, a third port 121 is formed in the inclined pipe section 120, and the included angle between the axis of the third port 121 and the axis of the second port 112 is 120-150 degrees (included angle); the pipe cleaner 200 comprises a central column 210 and scraping leather cups 220, the scraping leather cups 220 are arranged at two ends of the central column 210, the inner diameters of the horizontal pipe section 110 and the inclined pipe section 120 are the same, and the scraping leather cups 220 are in interference fit with the inclined tee 100; wherein the length of the pig 200, the diameter of the central column 210 and the inner diameter of the mitre 100 are matched according to the set data table to enable the pig 200 to enter the horizontal pipe section 110 through the inclined pipe section 120.
According to the shared pigging connecting device, the inclined tee 100 comprises a horizontal pipe section 110 and an inclined pipe section 120, one end of the inclined pipe section 120 is connected to the side wall of the horizontal pipe section 110, a first port 111 and a second port 112 are formed in the horizontal pipe section 110, a third port 121 is formed in the inclined pipe section 120, the included angle between the axis of the third port 121 and the axis of the second port 112 is configured to be 120-150 degrees, the length of a pig 200, the diameter of a central column 210 and the inner diameter of the inclined tee 100 are matched according to a set data table, so that the pig 200 can enter the horizontal pipe section 110 through the inclined pipe section 120, and the pig 200 can be conveyed in a fold line pipeline of 120-150 degrees.
The bypass hole is generally formed in the central column or the scraping leather cup, the speed of bypass oil flow passing through the bypass hole under the action of pressure difference is high, the wax layer scraped is impacted forwards, and the problem that the wax layer is accumulated in the advancing direction of the scraping leather cup to block the wax layer is avoided.
For example, the included angle between the axis of the third port 121 and the axis of the second port 112 is 120 degrees, 135 degrees, 150 degrees, or the like, which can achieve the purpose of the present application, and the purpose of the present application does not depart from the design concept of the present invention, and therefore, the present application shall not be described herein again, and shall all fall within the protection scope of the present application.
In an exemplary embodiment, the size of the mitre 100 is 4 inches (NPS), the length of the pig 200 is 122-211 mm, and the diameter of the center column 210 is 60-80 mm.
The size of the mitre 100 may be 4 inches, the length of the pig 200 is 122mm, and the diameter of the central column 210 is 60 mm; alternatively, the size of the mitre 100 may be 4 inches, the length of the pig 200 may be 166mm, and the diameter of the central column 210 may be 70 mm; or the size of the mitre 100 may be 4 inches, the length of the pig 200 is 211mm, and the diameter of the central column 210 is 80 mm; the purpose of the present application can be achieved, and the purpose of the present application does not depart from the design concept of the present invention, and therefore, the present application shall not be described herein again, and shall fall within the protection scope of the present application.
In another exemplary embodiment, the size of the mitre 100 is 6 inches, the length of the pig 200 is 183-316 mm, and the diameter of the center post 210 is 92-114 mm.
The size of the oblique tee 100 is 6 inches, the length of the pig 200 is 183mm, and the diameter of the central column 210 is 92 mm; or the size of the mitre 100 is 6 inches, the length of the pig 200 is 249mm, and the diameter of the central column 210 is 103 mm; or the size of the mitre 100 may be 6 inches, the length of the pig 200 is 316mm, and the diameter of the center column 210 is 114 mm; the purpose of the present application can be achieved, and the purpose of the present application does not depart from the design concept of the present invention, and therefore, the present application shall not be described herein again, and shall fall within the protection scope of the present application.
In yet another exemplary embodiment, the size of the mitre 100 is 8 inches, the length of the pig 200 is 237-414 mm, and the diameter of the center column 210 is 126-160 mm.
The size of the mitre 100 may be 8 inches, the length of the pig 200 is 237mm, and the diameter of the central column 210 is 126 mm; or the size of the mitre 100 may be 8 inches, the length of the pig 200 is 325mm, and the diameter of the central column 210 is 143 mm; or the size of the mitre 100 may be 8 inches, the length of the pig 200 is 414mm, and the diameter of the central column 210 is 160 mm; the purpose of the present application can be achieved, and the purpose of the present application does not depart from the design concept of the present invention, and therefore, the present application shall not be described herein again, and shall fall within the protection scope of the present application.
In an exemplary embodiment, the interference rate between the skiving cup 220 and the mitre joint 100 is not greater than 5%, so that the blockage accident of the pig 200 caused by excessive friction force is avoided.
The scraping leather cup 220 is a rubber leather cup, the interference rate of the rubber leather cup is about 4%, and the pipe cleaner 200 is not easy to cause blocking accidents; or the scraping leather cup 220 is a polyurethane leather cup, the interference rate of the polyurethane leather cup is about 1% -3%, and the pipe cleaner 200 is not easy to cause blocking accidents; the purpose of the present application can be achieved, and the purpose of the present application does not depart from the design concept of the present invention, and therefore, the present application shall not be described herein again, and shall fall within the protection scope of the present application.
The data table is set as follows:
the shared pipeline provided by the embodiment of the present invention, as shown in fig. 4, includes a downstream pipeline 300, a pig receiving device 900, a connecting tee 400, N upstream pipelines 500, and N shared pigging connection devices described in any of the above embodiments; the N horizontal pipe sections 110 are connected in sequence to form a connecting pipeline 130, a second port 112 of the horizontal pipe section 110 positioned on the upstream side on the connecting pipeline 130 is connected with a first port 111 of the horizontal pipe section 110 positioned on the downstream side, and the first port 111 at one end of the connecting pipeline 130 is sealed by a connecting valve 131; the downstream pipeline 300 and the pig receiving device 900 are connected with the second port 112 at the other end of the connecting pipeline 130 through the connecting tee 400, and the N upstream pipelines 500 are connected with the N third ports 121 in a one-to-one correspondence manner, so that the N pigs 200 enter the pig receiving device 900 through the connecting tee 400 along the connecting pipeline 130 after passing through the N inclined pipe sections 120 from the N upstream pipelines 500 in a one-to-one correspondence manner; n is a positive integer greater than or equal to 2.
The shared pipeline has all the advantages of the shared pigging connection device described in any of the above embodiments, and the N upstream pipelines 500 can be used in cooperation with the same pig receiving device 900, so that the number of the pig receiving devices 900 is greatly reduced, and the equipment cost of the shared pipeline can be greatly reduced.
The N horizontal pipe sections 110 are detachably connected by flanges to ensure that under special conditions, when the pipe cleaner 200 is blocked in the inclined tee 100, the repair can be quickly completed, and normal operation of the shared pipeline can be timely realized. And the flange connection can avoid fire in an on-site explosion-proof area, the whole station and the upstream pipeline 500 are not required to be stopped, and the stop loss of the oil field is reduced.
Of course, the number of the upstream pipelines may also be less than the number of the inclined tee, for example, the number of the upstream pipelines is two, the number of the inclined tee is three, and the like, and the purpose of the present application can also be achieved, and the purpose of the present application does not depart from the design concept of the present invention, and the details are not described herein, and the present application also falls within the protection scope of the present application.
Illustratively, as shown in FIG. 4, the junction tee 400 is a pigging tee.
Illustratively, as shown in fig. 4, a first ball indicator 601 is connected to each of the N third ports 121, and the first ball indicator 601 is used for detecting whether the pig 200 enters the slant pipe section 120 from the upstream pipeline 500.
Illustratively, as shown in fig. 4, a first pressure detecting device 301, a first on-off valve 302 and a temperature detecting device 303 are sequentially disposed on the downstream line 300, and the first pressure detecting device 301 is located between the first on-off valve 302 and the connecting tee 400. The first pressure detection means 301 comprises a mechanical pressure gauge and a pressure transmitter. The temperature monitoring device comprises a mechanical thermometer and a temperature transmitter.
Illustratively, as shown in fig. 4, a second on-off valve 602 is disposed between pig receiver 900 and the pigging tee, and second on-off valve 602 is a full bore ball valve.
Illustratively, as shown in fig. 4, the inlet end of the pig receiving device 900 is provided with a first pressure detection port, a ball passing detection port, a first drain port, a purge port and a first balance port, the second pressure detection device 701 is connected to the first pressure detection port, the second ball passing indicator 702 is connected to the ball passing detection port, the first drain valve 703 is connected to the first drain port, and the purge valve 704 is connected to the purge port.
Illustratively, as shown in fig. 4, the outlet end of the pig receiving device 900 is provided with a second pressure detection port, a vent port, a second sewage draining port and a second balance port, a third pressure detection device 711 is connected to the second pressure detection port, the vent valve 712 is connected to the vent port, a second sewage draining valve 713 is connected to the second sewage draining port, a balance pipeline 714 is connected between the first balance port and the second balance port, and the balance pipeline 714 is further connected to the downstream pipeline 300 through an outlet valve 715.
Illustratively, as shown in fig. 4, a pressure relief port is provided in the middle of the pig receiver 900, and a pressure relief valve 721 is connected to the pressure relief port.
Illustratively, as shown in fig. 4, the shared pipeline further includes: also connected to the trapway line 800 are a trapway line 800, a first trapway valve 703, a second trapway valve 713, and a pressure relief valve 721.
N is a positive integer of 1, 2, 3, 4, 5, etc.
Normal production flow of shared pipeline:
the first switching valve 302 is opened and the second switching valve 602 and the outlet valve 715 are closed, and the fluid supplied from the upstream line 500 enters the mitre tee 100 through the third port 121, passes through the junction tee after passing through the junction line 130, passes through the first switching valve 302, and enters the downstream line 300. The mechanical pressure gauge and the mechanical thermometer are mechanical gauges, the pressure transmitter and the temperature transmitter are electronic transmitters, and the pressure transmitter and the temperature transmitter can transmit temperature and pressure signals to related control rooms, so that remote monitoring is facilitated. The mechanical instrument and the electronic transmitter can be mutually corrected, and the purpose of improving the accuracy of measured values can be achieved.
Pigging process of shared pipeline:
the first on-off valve 302 is closed and the second on-off valve 602 and the outlet valve 715 are opened, and when the pig 200 enters the mitre 100 from the angled pipe section 120, the first ball indicator 601 will signal that the pig 200 has entered the mitre 100. As the fluid continues to be pushed, the pig 200 enters the connecting line 130 through the inclined pipe section 120, when the second balloon indicator 702 indicates that the pig 200 has entered the pig receiving device 900, the second pressure detection device 701 and the third pressure detection device 711 need to be observed, and when the pressure of the second pressure detection device 701 is abnormal and exceeds the design pressure of the pig receiving device 900, the pressure relief valve 721 jumps to release the excess fluid, so that the internal pressure of the pig receiving device 900 is reduced, and the effect of protecting the pig receiving device 900 is achieved. When the pressure values of the second pressure detection device 701 and the third pressure detection device 711 on the pig receiving device 900 are the same, which indicates that the pig 200 enters the latter half of the pig receiving device 900 and has completed receiving the pig 200, the second on-off valve 602 and the outlet valve 715 may be closed, and the first on-off valve 302 may be opened to return to the normal production flow.
In order to safely take out the pig 200, the air release valve 712, the first blowdown valve 703 and the second blowdown valve 713 need to be opened at this time, so that the pressure inside the pig receiving device 900 is consistent with the external pressure, and when the pressure values of the second pressure detection device 701 and the third pressure detection device 711 are consistent with the external pressure, the quick-opening blind plate 910 at the outlet end of the pig receiving device 900 can be opened, the pig 200 is taken out, and the pipe cleaning operation is completed. Finally, hot water is injected through the purge valve 704 to clean the entire pig receiver 900, and after the cleaning liquid is removed using the first and second blow-down valves 703 and 713, the entire pig receiver 900 can be ready for the next pigging operation.
In fig. 4, the valves are open when unfilled and closed when filled.
The length of the pipe cleaner satisfies: during the process of the pig 200 entering the horizontal pipe segment 110 from the inclined pipe segment 120, when the scraping cup 220 at the front end is just in sealing fit with the horizontal pipe segment 110, the scraping cup 220 at the rear end is at most just separated from the inclined pipe segment 120 to release the sealing. In this way, the pig 200 may pass smoothly from the inclined section 120 into the horizontal section 110 and finally also into the pig receiver 900.
In summary, in the shared pigging connection device provided by the embodiment of the present invention, the inclined tee includes a horizontal pipe section and an inclined pipe section, one end of the inclined pipe section is connected to the side wall of the horizontal pipe section, the horizontal pipe section is formed with the first port and the second port, the inclined pipe section is formed with the third port, an included angle between an axis of the third port and an axis of the second port is configured to be 120-150 degrees, and a length of a pig, a diameter of the central column and an inner diameter of the inclined tee are matched according to a set data table, so that the pig can enter the horizontal pipe section through the inclined pipe section, and the pig can be conveyed in a broken line pipeline of 120-150 degrees.
In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
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| CN202010876167.XA CN112161146B (en) | 2020-08-27 | 2020-08-27 | Shared pigging connecting device and shared pipeline |
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| CN202010876167.XA CN112161146B (en) | 2020-08-27 | 2020-08-27 | Shared pigging connecting device and shared pipeline |
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| CN112161146B CN112161146B (en) | 2022-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023023689A1 (en) * | 2021-08-24 | 2023-03-02 | Sino Iron Holdings Pty Ltd | A pigging system and method |
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| CN112161146B (en) | 2022-04-12 |
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