CN114935061B - Blind plate for transmission pipeline - Google Patents
Blind plate for transmission pipeline Download PDFInfo
- Publication number
- CN114935061B CN114935061B CN202210459848.5A CN202210459848A CN114935061B CN 114935061 B CN114935061 B CN 114935061B CN 202210459848 A CN202210459848 A CN 202210459848A CN 114935061 B CN114935061 B CN 114935061B
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- Prior art keywords
- flange
- pipeline
- cover plate
- blind plate
- plate
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 40
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 6
- 238000010926 purge Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 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
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging 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
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 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
- 230000002093 peripheral effect Effects 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
- 230000008707 rearrangement 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
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 barrier, and discloses a blind plate for a transmission pipeline. The transmission pipeline comprises a first pipeline and a second pipeline, wherein 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 connected relatively, and a blind plate for the transmission pipeline is clamped between the first flange and the second flange. One side of the cover plate is blocked on the first flange. Each cushion block is arranged at one side of the cover plate far away from the first flange at intervals and is propped against the second flange. Before installing the blind plate for the transfer pipe, the gas flows through the first pipe, the first flange and the second flange to the second pipe. When the second pipeline is maintained or replaced, the cover plate can effectively block the first pipeline to avoid gas leakage; meanwhile, a fluid channel is formed among the cover plate, the second flange and each cushion block, and the cushion blocks can not block the second flange, so that the residual gas in the second pipeline can be conveniently discharged.
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, a gas pipe 1 'is communicated with a drainer 3' through a down pipe 2', and gas flows into the drainer 3' through the gas pipe 1 'and the down pipe 2' in sequence. In order to replace the down tube 2', the gas source is cut off, and the residual gas in the down tube 2' is exhausted completely, so that the gas leakage and accidents are avoided in the replacement process.
In order to facilitate the replacement of the down pipe 2', an upper gate valve 4' is arranged between the down pipe 2' and the gas pipeline 1', a test joint 5' is also arranged on the down pipe 2', and a ball valve 6' for switching on or off the test joint 5' is arranged on the test joint 5 '. The existing process of replacing the downcomer 2' is: firstly, closing an upper gate valve 4', and then, blocking a blind plate 7' below the upper gate valve 4', namely at the communication position of a gas pipeline 1' and a down pipe 2', and cutting off a gas source; next, the purge machine is connected to the test joint 5'; then, opening the ball valve 6', and injecting water or gas into the downcomer 2' by the purging machine to fill the interior of the downcomer 2' with water or gas; finally, the connection between the purging machine and the test joint 5' is disconnected, and water or gas in the downcomer 2' is discharged from the ball valve 6', so that the residual gas is diluted and carried out.
However, the blind plate 7' is plugged between the gas pipeline 1' and the down tube 2', and residual gas in the down tube 2' near the blind plate 7' often remains partially in place, and is not easily carried out along with gas or water blown by the blower. Therefore, in the process of replacing the down tube 2', the residual gas brings great potential safety hazard, and accidents such as ignition, explosion or personnel poisoning are easy to happen.
Disclosure of Invention
The invention aims to provide a blind plate for a transmission pipeline, wherein the blind plate can form a fluid channel with a down pipe when being plugged at an outlet of a gas pipeline, so that the residual gas in the down pipe can be thoroughly replaced.
To achieve the purpose, the invention adopts the following technical scheme:
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 with the second flange is connected relatively, a blind plate for transmission pipeline presss from both sides and establishes first flange with between the second flange, it includes:
the cover plate is blocked on the first flange at one side end face;
the cushion blocks are arranged on the end face of one side, far away from the first flange, of the cover plate at intervals and are propped against the second flange.
Optionally, the cushion block includes a buffer portion, and the buffer portion abuts against the second flange.
Optionally, each cushion block is provided with a guide surface.
Optionally, each cushion block is uniformly arranged along the circumferential direction of the cover plate.
Optionally, the sealing gasket is further included, and the sealing gasket is clamped between the cover plate and the first flange.
Optionally, the cover plate further comprises an operation handle, and the operation handle is connected to the cover plate.
Optionally, the device further comprises a marking part, wherein the marking part is arranged on the operating handle.
Optionally, a fluid channel is formed between the cover plate, the second flange and the adjacent cushion blocks, the blind plate for the transmission pipeline further comprises filter screens corresponding to the fluid channels one by one, and the filter screens are blocked in the corresponding fluid channels.
Optionally, the device further comprises a plurality of net racks, the net racks are arranged between the adjacent cushion blocks, one ends of the net racks are arranged on the cover plate, and the other ends of the net racks are propped against the second flange.
Optionally, a bearing plate is arranged between the net rack and the second flange.
The beneficial effects are that:
before installing a blind plate for a transmission pipeline, gas flows to a second pipeline through a first pipeline, a first flange and a second flange; after the blind plate for the transmission pipeline is installed, one side of the cover plate is plugged on the first flange, so that gas is prevented from flowing out of the first flange. The other end of the cover plate is clamped with a plurality of spacer blocks arranged at intervals between the cover plate and the second flange, and a fluid channel is formed between each spacer block, so that the cover plate can not block the second flange, namely one end of the second pipeline can not be blocked, at the moment, the purging fluid conveyed from the other end of the second pipeline flows out of the fluid channel between each spacer block, 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 to avoid gas leakage; meanwhile, the blind plate for the transmission pipeline is also convenient for discharging residual coal gas in the second pipeline, reduces the operation risk and ensures the personal safety.
Drawings
FIG. 1 is a schematic illustration of the installation of a prior art blind plate between a gas conduit and a drainer;
FIG. 2 is a side view of a blind plate for a transmission pipe provided in an embodiment of the present invention;
fig. 3 is a top view of a blind plate for a transmission pipe according to an embodiment of the present invention.
In the figure:
1', a gas pipeline; 2', a downcomer; 3', a drainer; 4', upper gate valve; 5', test linker; 6', ball valve; 7', blind plates;
1. a cover plate; 2. a cushion block; 21. a guide surface; 3. a sealing gasket; 4. an operation handle; 5. a marking part; 6. a net rack; 7. and (5) a filter screen.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
Example 1
The embodiment provides a blind plate for transmission pipeline, and transmission pipeline includes first pipeline and second pipeline, and the one end of first pipeline is equipped with first flange, and the one end of second pipeline is equipped with the second flange, and first flange and second flange are connected relatively. Illustratively, the first flange and the second flange are each provided with a plurality of opposing through holes at their peripheral edges, and a plurality of bolts pass through the corresponding through holes and are threadedly connected with corresponding nuts, thereby sealingly connecting the first flange and the second flange. In this embodiment, the transmission pipe is used for conveying gas, and before the blind plate is installed, the gas flows to the second pipe through the first pipe, the first flange and the second flange.
When the second pipeline needs to be maintained or replaced, the blind plate for the transmission pipeline is clamped between the first flange and the second flange. Illustratively, the blind plate mounting process is specifically as follows: 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, so that the blind plate is clamped between the first flange and the second flange 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 pad 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 gas stops at the first flange, and the gas is prevented from continuously flowing out to influence the operation safety of staff. The cushion blocks 2 are arranged in a plurality, and each cushion block 2 is arranged on one side end face of the cover plate 1 far away from the first flange at intervals and is propped against the second flange. Each cushion block 2 is arranged at intervals, each cushion block 2 forms a fluid channel between the cover plate 1 and the second flange, so that the cover plate 1 can not block the second flange, namely, one end of the second pipeline close to the first pipeline is not blocked, at the moment, the two ends of the second pipeline are communicated with each other, and gas in the second pipeline can naturally flow out along with the flow of air. Therefore, the gas in the second pipeline cannot remain in the second pipeline, and when the second pipeline is maintained or replaced by a worker, the working risk is low, and the personal safety of the worker is ensured.
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 cover plate 1 has a circular shape, however, in other embodiments, the cover plate 1 may have other regular or irregular shapes, which is not limited herein.
In one embodiment, the cushion block 2 and the cover plate 1 are of an integral structure, such as welded connection or cast molding, and the integral structure is not required to be assembled, so that the use is convenient. When being stressed, the cushion block 2 and the cover plate 1 are reliably connected, and relative looseness or displacement can not 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, etc., and the assembly and the disassembly are convenient.
Optionally, the spacer 2 comprises a buffer (not shown in the figures) which rests on 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 portion is a rubber pad, which has elasticity, and when the blind plate is installed between the first flange and the second flange, the rubber pad can buffer the rigid contact between the cushion block 2 and the second flange, so as to protect the cushion block 2 and the second flange. In addition, the rubber pad has good chemical stability and strong corrosion resistance, and is convenient for long-term use.
To facilitate the insertion or extraction of the blind plates between the first and second flanges that are open, the spacers 2 are optionally provided with guide surfaces 21. Specifically, as shown in fig. 2 and 3, an arc-shaped guiding surface 21 is provided at the outer periphery of the surface where each cushion block 2 is connected to the second flange, which can provide guiding for the installation and the disassembly of the blind plate, so that the operation of the staff is facilitated.
Optionally, the cushion blocks 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 bolts and nuts lock the first flange and the second flange, 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 among 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 adjacent to the blind plate.
Optionally, the blind plate for the transmission pipe further comprises a gasket 3, the gasket 3 being sandwiched between the cover plate 1 and the first flange. The sealing gasket 3 is beneficial to improving the tightness between the first flange and the cover plate 1, so that the sealing effect of the gas at the first flange is good. In the present embodiment, the gasket 3 is made of a tetrafluoroethylene material, which is tightly adhered to the surface of the cover plate 1. In other embodiments, the sealing pad 3 may be made of other materials such as sponge, foam, rubber, etc., which may be specifically selected according to actual needs, and is not limited herein.
Optionally, the blind plate for the transmission 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 operation handle 4 is connected to the periphery of the cover plate 1, and when the operator holds the operation handle 4 and inserts the cover plate 1 with the cushion block 2 between the first flange and the second flange, the operation 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 identify the blind plate, such as an oval cross section, and has a pattern engraved on the surface, so that the staff can identify and distinguish the blind plate. 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 3, the blind plate for a transmission pipeline further includes a plurality of net racks 6, and 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 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 of the second pipeline, which is close to the blind plate, is kept conductive. In the embodiment, the net rack 6 is welded on the cover plate 1, and the connection is reliable.
Optionally, a fluid channel is formed among the cover plate 1, the second flange and the adjacent cushion block 2, and the blind plate for the transmission pipeline further comprises a filter screen 7 corresponding to the fluid channel one by one, wherein the filter screen 7 is blocked in the corresponding fluid channel. The filter screen 7 can prevent foreign substances, dust, etc. from entering the second pipe from the fluid passage and contaminating the second pipe. In this embodiment, as shown in fig. 3, the filter screen 7 is detachably mounted on the inner side of the mesh frame 6, for example, by bolting, etc., and the filter screen 7 is protected from damage by the mesh frame 6.
Optionally, a bearing plate (not shown) is provided between the grid 6 and the second flange. The net rack 6 is propped against the second flange through the bearing plate so as to avoid damaging the surface of the second flange.
The blind plate for the transmission pipeline provided by the embodiment is beneficial to improving the tightness between the first flange and the cover plate 1 by the sealing gasket 3 at one side of the cover plate 1, so that the gas is blocked at the outlet end of the first pipeline. The cushion block 2 and the net rack 6 at 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, one end of the second pipeline close to the cover plate 1 is conducted, and the discharge of residual gas in the second pipeline is facilitated.
Example two
The present embodiment provides a blind plate for a transmission pipe, which is substantially the same as that provided in the first embodiment, except that, as shown in fig. 2 and 3, the blind plate for a transmission pipe further includes a marking part 5, the marking part 5 being provided on the operation handle 4. When the blind plate is plugged between the first flange and the second flange, the cover plate 1 and the cushion block 2 are hidden between the first flange and the second flange, and the observation is inconvenient, so that the identification part 5 is arranged on the operating handle 4, and a worker can conveniently judge that the blind plate is clamped between the first flange and the second flange through the identification of the identification part 5. The identification portion 5 is an identification hole, which can be used for identifying the blind plate and for lifting the whole blind plate.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. A blind plate for a transmission pipeline, the transmission pipeline includes a first pipeline and a second pipeline, one end of the first pipeline is provided with a first flange, one end of the second pipeline is provided with a second flange, the first flange and the second flange are relatively connected, characterized in that, the blind plate for a transmission pipeline is clamped between the first flange and the second flange, and the blind plate comprises:
the cover plate (1) is plugged on the first flange at one side end face;
the cushion blocks (2) are arranged on the end face of one side, far away from the first flange, of the cover plate (1) at intervals, and all the cushion blocks (2) are propped against the second flange;
the blind plate for the transmission pipeline further comprises filter screens (7) corresponding to the fluid channels one by one, and the filter screens (7) are blocked and arranged on the corresponding fluid channels.
2. Blind plate for transmission pipes according to claim 1, characterized in that the spacer block (2) comprises a buffer portion which rests on the second flange.
3. Blind plate for transmission pipes according to claim 1, characterized in that each of the pads (2) is provided with a guiding surface (21).
4. Blind for transmission pipes according to claim 1, characterized in that each of the pads (2) is uniformly arranged along the circumference of the cover plate (1).
5. Blind plate for transmission pipes according to claim 1, further comprising a gasket (3), said gasket (3) being interposed between said cover plate (1) and said first flange.
6. Blind for transmission pipes according to claim 1, characterized in that it further comprises an operating handle (4), said operating handle (4) being connected to said cover plate (1).
7. Blind plate for a transmission duct according to claim 6, further comprising an identification portion (5), said identification portion (5) being provided on said operating handle (4).
8. Blind plate for a transmission pipeline according to any one of claims 1-7, further comprising a plurality of net frames (6), wherein the net frames (6) are arranged between adjacent cushion blocks (2), one end of each net frame (6) is arranged on the cover plate (1), and the other end of each net frame is abutted against the second flange.
9. Blind plate for transmission pipes according to claim 8, characterized in that a bearing plate is arranged between the grid (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 CN114935061A (en) | 2022-08-23 |
| CN114935061B true CN114935061B (en) | 2023-10-31 |
Family
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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 |
Country Status (1)
| Country | Link |
|---|---|
| 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 |
|---|---|
| CN114935061A (en) | 2022-08-23 |
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