CN114935061A - Blind plate for transmission pipeline - Google Patents
Blind plate for transmission pipeline Download PDFInfo
- Publication number
- CN114935061A CN114935061A CN202210459848.5A CN202210459848A CN114935061A CN 114935061 A CN114935061 A CN 114935061A CN 202210459848 A CN202210459848 A CN 202210459848A CN 114935061 A CN114935061 A CN 114935061A
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- flange
- pipeline
- blind
- cover plate
- plate
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 239000003034 coal gas Substances 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010926 purge Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- F16L55/10—Means for stopping flow from or in pipes or hoses
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Supports For Pipes And Cables (AREA)
- Pipe Accessories (AREA)
Abstract
The invention belongs to the technical field of fluid obstruction and discloses a blind plate for a transmission pipeline. The transmission pipeline comprises a first pipeline and a second pipeline, a first flange is arranged at one end of the first pipeline, a second flange is arranged at one end of the second pipeline, the first flange and the second flange are oppositely connected, and a blind plate for the transmission pipeline is clamped between the first flange and the second flange. One side shutoff of apron is on first flange. Each cushion interval sets up in the apron and keeps away from one side of first flange, and all supports on the second flange. Before the blind plate for the transmission pipeline is installed, the coal gas flows to the second pipeline through the first pipeline, the first flange and the second flange. When the second pipeline is maintained or replaced, the cover plate can effectively block the first pipeline, so that gas leakage is avoided; meanwhile, fluid channels are formed among the cover plate, the second flange and the cushion blocks, the cushion blocks cannot block the second flange, and residual coal gas in the second pipeline can be discharged conveniently.
Description
Technical Field
The invention relates to the technical field of fluid barrier, in particular to a blind plate for a transmission pipeline.
Background
As shown in fig. 1, the gas pipe 1 'is communicated with the water drainer 3' through the downcomer 2', and the gas flows into the water drainer 3' through the gas pipe 1 'and the downcomer 2' in sequence. In order to replace the downcomer 2', the gas source is cut off, and residual gas in the downcomer 2' is discharged completely, so that gas leakage and accidents in the replacement process are avoided.
In order to replace the descending pipe 2', an upper gate valve 4' is arranged between the descending pipe 2' and the gas pipeline 1', a test joint 5' is further arranged on the descending pipe 2', and a ball valve 6' for conducting or closing the test joint 5' is arranged on the test joint 5 '. The existing process for replacing the downcomer 2' is as follows: firstly, closing an upper gate valve 4', then plugging a blind plate 7' below the upper gate valve 4', namely at the communication part of a gas pipeline 1' and a down pipe 2', and cutting off a gas source; then, connecting a test connector 5' with a blowing machine; then, the ball valve 6' is opened, and the purging machine injects or injects water into the descending pipe 2' to fill the descending pipe 2' with water or gas; finally, the communication between the blower and the test connection 5' is cut off, and the water or gas inside the downcomer 2' is let out of the ball valve 6', thereby diluting and carrying away the residual gas.
However, the blind plate 7' is blocked between the gas pipeline 1' and the down pipe 2', and the residual gas near the blind plate 7' in the down pipe 2' often still partially remains in situ and is not easily carried out along with the gas or water flow blown by the purging machine. Therefore, during the process of replacing the downcomer 2', the residual gas brings about a great safety hazard, and accidents such as fire, explosion or poisoning of people are easy to happen.
Disclosure of Invention
The invention aims to provide a blind plate for a transmission pipeline, which can form a fluid channel with a descending pipe while being blocked at an outlet of a gas pipeline so as to realize the complete replacement of residual gas in the descending pipe.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a blind plate for transmission pipeline, transmission pipeline includes first pipeline and second pipeline, the one end of first pipeline is equipped with first flange, the one end of second pipeline is equipped with the second flange, first flange and the relative connection of second flange, blind plate clamp for transmission pipeline is established between first flange and the second flange, and it includes:
the end face of one side of the cover plate is plugged on the first flange;
and the cushion blocks are arranged on one side end face, far away from the first flange, of the cover plate at intervals and are all abutted to the second flange.
Optionally, the spacer includes a buffer portion, and the buffer portion abuts against the second flange.
Optionally, each of the spacers is provided with a guide surface.
Optionally, the cushion blocks are uniformly arranged along the circumferential direction of the cover plate.
Optionally, the sealing device further comprises a sealing gasket, and the sealing gasket is clamped between the cover plate and the first flange.
Optionally, the cover plate further comprises an operating handle connected to the cover plate.
Optionally, the device further comprises an identification part arranged on the operating handle.
Optionally, a fluid channel is formed between the cover plate, the second flange and the adjacent cushion block, the blind plate for the transmission pipeline further includes filter screens in one-to-one correspondence with the fluid channels, and the filter screens are blocked in the corresponding fluid channels.
Optionally, still include a plurality of racks, it is adjacent all be equipped with between the cushion the rack, the one end setting of rack is in on the apron, the other end supports on the second flange.
Optionally, a bearing plate is arranged between the net rack and the second flange.
Has the advantages that:
before a blind plate for a transmission pipeline is installed, gas flows to a second pipeline through a first pipeline, a first flange and a second flange; after a blind plate for a transmission pipeline is installed, one side of the cover plate is plugged on the first flange, and gas is prevented from flowing out of the first flange. At the other end of the cover plate, a plurality of cushion blocks arranged at intervals are clamped between the cover plate and the second flange, fluid channels are formed between the cushion blocks, so that the cover plate cannot block the second flange, namely, one end of the second pipeline cannot be blocked, at the moment, the purging fluid conveyed from the other end of the second pipeline can flow out from the fluid channels between the cushion blocks, and therefore, residual coal gas in the second pipeline can be rapidly and thoroughly replaced by the purging fluid. When the second pipeline is maintained or replaced, the blind plate for the transmission pipeline can effectively block the first pipeline, so that gas leakage in the first pipeline is avoided; meanwhile, the blind plate for the transmission pipeline is convenient for discharging residual coal gas in the second pipeline, reduces operation risks and guarantees personal safety.
Drawings
FIG. 1 is a schematic view of an existing blind plate installed between a gas pipe and a drainer;
FIG. 2 is a side view of a blind for a transport pipeline according to an embodiment of the present invention;
fig. 3 is a top view of a blind plate for a transport pipeline according to an embodiment of the present invention.
In the figure:
1', a gas pipeline; 2', a down pipe; 3', a drainer; 4', an upper gate valve; 5', a test joint; 6', a ball valve; 7', a blind plate;
1. a cover plate; 2. a cushion block; 21. a guide surface; 3. a gasket; 4. an operating handle; 5. a marking part; 6. a net frame; 7. and (5) filtering by using a filter screen.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
The embodiment provides a blind plate for a transmission pipeline, the transmission pipeline comprises a first pipeline and a second pipeline, a first flange is arranged at one end of the first pipeline, a second flange is arranged at one end of the second pipeline, and the first flange and the second flange are oppositely connected. Illustratively, a plurality of opposite through holes are formed in the peripheries of the first flange and the second flange, and a plurality of bolts penetrate through the corresponding through holes and are in threaded connection with corresponding nuts, so that the first flange and the second flange are connected in a sealing mode. In this embodiment, the transport pipe is used for transporting gas, which flows through the first pipe, the first flange and the second flange to the second pipe before the blind plate is installed.
When the second pipeline needs to be repaired or replaced, the blind plate for the transmission pipeline is clamped between the first flange and the second flange. Illustratively, the installation process of the blind plate specifically includes: and removing bolts and nuts for connecting the first flange and the second flange, inserting the blind plate between the first flange and the second flange along the radial direction of the first flange, and reconnecting the first flange and the second flange by using the bolts and the nuts to ensure that the blind plate is clamped between the first flange and the second flange so as to ensure the plugging effect on the first flange.
As shown in fig. 2 and 3, the blind plate includes a cover plate 1 and a spacer 2. Specifically, the end face of one side of the cover plate 1 is plugged on the first flange to plug the output end of the first pipeline, so that the coal gas is stopped at the first flange, and the coal gas is prevented from continuously flowing out to influence the operation safety of workers. Cushion 2 is equipped with a plurality ofly, and 2 intervals of each cushion set up and keep away from a side end face of first flange at apron 1, and all support on the second flange. Each cushion 2 interval sets up, and each cushion 2 forms fluid passage between apron 1 and second flange for apron 1 can not the shutoff second flange, can not shutoff second pipeline be close to the one end of first pipeline promptly, and at this moment, switch on each other between the second pipeline both ends, and the coal gas that is located the second pipeline can flow along with the flow of air naturally. Therefore, coal gas in the second pipeline can not be remained in the second pipeline, when the second pipeline is maintained or replaced by workers, the operation risk is low, and the personal safety of the workers is guaranteed.
In this embodiment, the cover plate 1 is a steel plate structure, the structural strength is high, the installation between the first flange and the second flange is stable, the corrosion resistance of the steel plate is good, and the service life of the cover plate 1 is prolonged. As shown in fig. 3, the shape of the cover plate 1 is a circular structure, however, in other embodiments, the shape of the cover plate 1 may be other regular or irregular shapes, and is not limited herein.
In one embodiment, the cushion block 2 and the cover plate 1 are of an integrated structure, such as welded connection or cast molding, and the integrated structure does not need to be assembled and is convenient to use. When the stress is applied, the connection between the cushion block 2 and the cover plate 1 is reliable, and relative looseness or displacement cannot be generated. In another embodiment, the cushion block 2 is detachably connected with the cover plate 1, such as a bolt connection or a buckle connection, and the like, so that the assembly and disassembly are convenient.
Optionally, the spacer 2 comprises a buffer (not shown in the figures) which abuts against the second flange. The buffer part is connected with the second flange, and the buffer part can effectively protect the structures of the cushion block 2 and the second flange. In this embodiment, the buffer part is a rubber pad, which has elasticity, and when the above-mentioned blind plate is installed between the first flange and the second flange, the rubber pad can cushion the rigid contact between the cushion block 2 and the second flange, and protect the two. In addition, the rubber pad has good chemical stability and strong corrosion resistance, and is convenient for long-term use.
In order to facilitate the insertion or extraction of the above-mentioned blind between the opened first and second flanges, optionally, each spacer 2 is provided with a guide surface 21. Specifically, as shown in fig. 2 and 3, the outer peripheries of the surfaces of the cushion blocks 2, which are connected to the second flange, are provided with arc-shaped guide surfaces 21, which can provide guidance for the installation and the disassembly of the blind plate, and facilitate the operation of a worker.
Optionally, the spacers 2 are uniformly arranged along the circumferential direction of the cover plate 1 so as to be stably sandwiched between the cover plate 1 and the second flange. That is, when the first flange and the second flange are fastened by the bolts and the nuts, the clamping force between the first flange and the second flange can be uniformly distributed on each cushion block 2, so that the relative positions of the first flange, the second flange and the blind plate are more stable. In this embodiment, as shown in fig. 3, six spacers 2 are provided, and six fluid passages are formed between the spacers 2 to communicate with one end of the second pipe close to the blind plate.
Optionally, the blind plate for the transmission pipeline further comprises a sealing gasket 3, and the sealing gasket 3 is clamped between the cover plate 1 and the first flange. The sealing gasket 3 is beneficial to improving the sealing performance between the first flange and the cover plate 1, so that the plugging effect of the coal gas at the first flange is good. In the present embodiment, the gasket 3 is made of tetrafluoroethylene material, which is closely adhered to the surface of the cover plate 1. In other embodiments, the sealing pad 3 may also be made of other materials such as sponge, foam, rubber, and the like, which may be specifically selected according to actual needs, and is not limited herein.
Optionally, the blind for the transport pipe further comprises an operating handle 4, the operating handle 4 being connected to the cover plate 1. Specifically, as shown in fig. 2 and 3, the operating handle 4 is connected to the periphery of the cover plate 1, and when the worker holds the operating handle 4 and inserts the cover plate 1 with the cushion block 2 between the first flange and the second flange, the operating handle 4 always extends out of the first flange and the second flange, so that the operation is convenient. In this embodiment, the operating handle 4 has a special shape to mark the blind plate, for example, the cross section is an ellipse, and the surface is engraved with patterns, so as to facilitate the identification and distinction of the blind plate by the staff. In this embodiment, the operation handle 4 and the cover plate 1 are integrally formed into an integral structure, such as welding or casting, and the integral structure has high connection strength and is not easy to damage.
Optionally, with continued reference to fig. 2 and fig. 3, the blind plate for the transmission pipeline further includes a plurality of net racks 6, the net racks 6 are disposed between adjacent cushion blocks 2, one end of each net rack 6 is disposed on the cover plate 1, and the other end of each net rack 6 abuts against the second flange. The net rack 6 and each cushion block 2 are supported between the cover plate 1 and the second flange together, so that the clamping force between the cover plate 1 and the second flange is uniformly distributed on each net rack 6 and each cushion block 2, the stress concentration of each cushion block 2 is reduced, and meanwhile, the net rack 6 still keeps a fluid channel, so that one end, close to the blind plate, of the second pipeline is kept to be conducted. In this embodiment, the net frame 6 is welded on the cover plate 1, and the connection is reliable.
Optionally, a fluid channel is formed between the cover plate 1, the second flange and the adjacent spacer 2, the blind plate for the transmission pipeline further includes a filter screen 7 corresponding to the fluid channel one by one, and the filter screen 7 is blocked in the corresponding fluid channel. The screen 7 can prevent foreign substances, dust, etc. from entering the second duct from the fluid passage to contaminate the second duct. In this embodiment, as shown in fig. 3, the screen 7 is detachably mounted inside the net frame 6, for example, by bolting, etc., and the screen 7 is protected from being damaged by the net frame 6.
Optionally, a pressure bearing plate (not shown) is provided between the net mount 6 and the second flange. The net frame 6 is pressed on the second flange through the bearing plate so as to avoid damaging the surface of the second flange.
According to the blind plate for the transmission pipeline provided by the embodiment, the sealing gasket 3 on one side of the cover plate 1 is beneficial to improving the sealing property between the first flange and the cover plate 1, so that the coal gas is blocked at the outlet end of the first pipeline. The cushion block 2 and the net rack 6 on the other side of the cover plate 1 are clamped between the second flange and the cover plate 1, so that a fluid channel is formed between the cover plate 1 and the second flange, and one end of the second pipeline close to the cover plate 1 is communicated, thereby being beneficial to discharging residual coal gas in the second pipeline.
Example two
The embodiment provides a blind plate for a conveying pipeline, which is basically the same as the blind plate for the conveying pipeline provided in the first embodiment, except that the blind plate for the conveying pipeline further comprises an identification part 5, and the identification part 5 is arranged on an operating handle 4, as shown in fig. 2 and 3. When the blind plate shutoff was between first flange and second flange, apron 1 and cushion 2 all hidden and are received between first flange and second flange, observe inconveniently, consequently, set up identification portion 5 on operation handle 4, the staff is through discerning identification portion 5, can conveniently judge that it is above-mentioned blind plate to press from both sides between first flange and the second flange and establish. The marking part 5 is exemplarily a marking hole, which can be used for identifying the blind plate and hoisting the blind plate as a whole.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations, and substitutions will occur to those skilled in the art without departing from the scope of the present invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a blind plate for transmission pipeline, transmission pipeline includes first pipeline and second pipeline, the one end of first pipeline is equipped with first flange, the one end of second pipeline is equipped with the second flange, first flange and the relative connection of second flange, its characterized in that, blind plate clamp for transmission pipeline establishes between first flange and the second flange, and it includes:
the end face of one side of the cover plate (1) is plugged on the first flange;
the cover plate comprises a plurality of cushion blocks (2), wherein the cushion blocks (2) are arranged on one side end face, far away from the first flange, of the cover plate (1) at intervals and are all abutted to the second flange.
2. Blind for a transfer pipe according to claim 1, characterised in that the spacer (2) comprises a buffer which rests on the second flange.
3. Blind plate for a transfer pipe according to claim 1, characterised in that each pad (2) is provided with a guide surface (21).
4. Blind for a transport pipe according to claim 1, characterised in that the spacers (2) are arranged uniformly in the circumferential direction of the cover plate (1).
5. Blind for a transport pipe according to claim 1, characterised in that it also comprises a gasket (3), said gasket (3) being interposed between said cover plate (1) and said first flange.
6. Blind for a conveying pipe according to claim 1, characterised in that it also comprises an operating handle (4), said operating handle (4) being connected to said cover plate (1).
7. Blind plate for a transport pipe according to claim 6, characterized in that it further comprises a marking (5), which marking (5) is provided on the operating handle (4).
8. The blind plate for a conveying pipeline according to claim 1, wherein a fluid channel is formed between the cover plate (1), the second flange and the adjacent spacer block (2), the blind plate for a conveying pipeline further comprises a filter screen (7) corresponding to the fluid channel, and the filter screen (7) is blocked in the corresponding fluid channel.
9. The blind for a conveying pipeline according to any one of claims 1 to 8, characterized by further comprising a plurality of net racks (6), wherein the net racks (6) are arranged between the adjacent cushion blocks (2), one end of each net rack (6) is arranged on the cover plate (1), and the other end of each net rack abuts against the second flange.
10. Blind for conveying pipes according to claim 9, characterised in that a pressure plate is provided between the net frame (6) and the second flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459848.5A CN114935061B (en) | 2022-04-24 | 2022-04-24 | Blind plate for transmission pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459848.5A CN114935061B (en) | 2022-04-24 | 2022-04-24 | Blind plate for transmission pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114935061A true CN114935061A (en) | 2022-08-23 |
| CN114935061B CN114935061B (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210459848.5A Active CN114935061B (en) | 2022-04-24 | 2022-04-24 | Blind plate for transmission pipeline |
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| Country | Link |
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| CN (1) | CN114935061B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089113U (en) * | 1991-03-29 | 1991-11-20 | 邯郸钢铁总厂 | Blind flange for displacing valve of gas pipeline |
| CN101637769A (en) * | 2009-08-26 | 2010-02-03 | 中冶集团华冶资源开发有限责任公司 | Blowing method of pipeline |
| CN201795960U (en) * | 2010-09-03 | 2011-04-13 | 山东金诚重油化工有限公司 | Equipment system for high-efficiency process pipe pressure testing |
| CN102996971A (en) * | 2012-12-07 | 2013-03-27 | 内蒙古包钢钢联股份有限公司 | Method for plugging and extracting holed blind plate of coal gas |
| CN203131313U (en) * | 2012-12-07 | 2013-08-14 | 内蒙古包钢钢联股份有限公司 | Blind plate allowing convenient blocking and drawing in process of gas pipeline repair operation with gas |
| CN106090525A (en) * | 2016-07-28 | 2016-11-09 | 上海煤气第管线工程有限公司 | Structural gas channel and construction method thereof |
| CN207674020U (en) * | 2017-12-08 | 2018-07-31 | 中国石油天然气第一建设有限公司 | A kind of multifunctional oil gas blind plate |
| CN207882080U (en) * | 2017-10-26 | 2018-09-18 | 辽宁红沿河核电有限公司 | A kind of device for the nuclear power plant voltage stabilizer pressure release case water pressure test |
| CN211260011U (en) * | 2019-10-30 | 2020-08-14 | 新疆东方希望新能源有限公司 | Blind plate assembly with identification function |
| CN215865685U (en) * | 2021-08-23 | 2022-02-18 | 山西潞安煤基清洁能源有限责任公司 | Pressure leakage test device |
| CN216307012U (en) * | 2021-12-03 | 2022-04-15 | 联峰钢铁（张家港）有限公司 | Sealing structure, hand-insertion blind plate and gasket |
-
2022
- 2022-04-24 CN CN202210459848.5A patent/CN114935061B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089113U (en) * | 1991-03-29 | 1991-11-20 | 邯郸钢铁总厂 | Blind flange for displacing valve of gas pipeline |
| CN101637769A (en) * | 2009-08-26 | 2010-02-03 | 中冶集团华冶资源开发有限责任公司 | Blowing method of pipeline |
| CN201795960U (en) * | 2010-09-03 | 2011-04-13 | 山东金诚重油化工有限公司 | Equipment system for high-efficiency process pipe pressure testing |
| CN102996971A (en) * | 2012-12-07 | 2013-03-27 | 内蒙古包钢钢联股份有限公司 | Method for plugging and extracting holed blind plate of coal gas |
| CN203131313U (en) * | 2012-12-07 | 2013-08-14 | 内蒙古包钢钢联股份有限公司 | Blind plate allowing convenient blocking and drawing in process of gas pipeline repair operation with gas |
| CN106090525A (en) * | 2016-07-28 | 2016-11-09 | 上海煤气第管线工程有限公司 | Structural gas channel and construction method thereof |
| CN207882080U (en) * | 2017-10-26 | 2018-09-18 | 辽宁红沿河核电有限公司 | A kind of device for the nuclear power plant voltage stabilizer pressure release case water pressure test |
| CN207674020U (en) * | 2017-12-08 | 2018-07-31 | 中国石油天然气第一建设有限公司 | A kind of multifunctional oil gas blind plate |
| CN211260011U (en) * | 2019-10-30 | 2020-08-14 | 新疆东方希望新能源有限公司 | Blind plate assembly with identification function |
| CN215865685U (en) * | 2021-08-23 | 2022-02-18 | 山西潞安煤基清洁能源有限责任公司 | Pressure leakage test device |
| CN216307012U (en) * | 2021-12-03 | 2022-04-15 | 联峰钢铁（张家港）有限公司 | Sealing structure, hand-insertion blind plate and gasket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114935061B (en) | 2023-10-31 |
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