CN202832630U - Gas return prevention device of coal mine gas pipeline - Google Patents
Gas return prevention device of coal mine gas pipeline Download PDFInfo
- Publication number
- CN202832630U CN202832630U CN 201220471553 CN201220471553U CN202832630U CN 202832630 U CN202832630 U CN 202832630U CN 201220471553 CN201220471553 CN 201220471553 CN 201220471553 U CN201220471553 U CN 201220471553U CN 202832630 U CN202832630 U CN 202832630U
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- gas
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- pipe
- coal mine
- gas pipe
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Abstract
The utility model provides a gas return prevention device of a coal mine gas pipeline. The gas return prevention device of the coal mine gas pipeline comprises a shell and a first gas pipe connected with one end of the shell, a second gas pipe is arranged at the other end of the shell, one end of the second gas pipe is sealed and located in the shell, a gas return prevention baffle used for sealing an opening of the second gas pipe is arranged in the shell, the gas return prevention baffle is connected with the upper end of the opening of the second gas pipe, and the gas return prevention baffle is movable. According to the gas return prevention device of the coal mine gas pipeline, a device for preventing gas return is arranged on a gas pumping and discharging pipeline, gas can flow in a single direction, when a pump station works normally, gas flows smoothly, when a pumping and discharging pump stops working suddenly, the gas pumping and discharging pipeline is closed automatically, gas return is avoided, and not only is operation simple, but also production safety is improved.
Description
Technical field
The utility model belongs to the coal mine special equipment field, is specifically related to a kind of coal mine gas pipeline anti feedback device.
Background technology
In the gas drainage under suction process, in a single day the termination of pumping phenomenon appears in gas pumping station, because gas suction pump is the high negative pressure extraction, therefore pressure excessive (greater than the extraction pipeline external pressure) in termination of pumping moment gas drainage pipeline, so the air-flow in the gas drainage pipeline can flow backwards, and causes high concentration gas to return, and again flows into the upper corner of work plane, cause easily upper corner gas moment to be transfinited, bring very big hidden danger for the safety in production of mine.
Summary of the invention
The purpose of this utility model is to provide a kind of coal mine gas pipeline anti feedback device.
For achieving the above object, the utility model has adopted following technical scheme:
Comprise shell and the first gas pipe that links to each other with an end of shell, the other end of described shell is provided with the second gas pipe, one end of the second gas pipe is closed in the shell, be provided with the anti feedback baffle plate for the capping second gas pipe mouth of pipe in the shell, the anti feedback baffle plate links to each other with the upper end of the second gas pipe mouth of pipe, and the anti feedback baffle plate is movable.
The upper end of the described second gas pipe mouth of pipe is provided with for the pin that connects the anti feedback baffle plate.
The end that described the second gas pipe is closed in the shell is skewed.
Offer several screw holes on the described shell.
The device of coal mine gas pipeline anti feedback device described in the utility model by being provided at gas drainage pipeline stoping air-flow to flow backwards, can make the air-flow one-way flow, when pumping plant works, air-flow flows smoothly, when the drainage pump cut operated, gas drainage pipeline will autoshutdown, prevents airflow reflux, not only simple to operate, and improved the safety of producing.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is left view of the present utility model;
Among the figure: the first gas pipe 1, the first gas pipe dish 2, shell 3, anti feedback baffle plate 4, pin 5, screw hole 6, the second gas pipes 7, the second gas pipe dishes 8.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Referring to Fig. 1 and Fig. 2, the utility model comprises shell 3 and the first gas pipe 1 that links to each other with an end of shell 3, the other end of described shell 3 is provided with the second gas pipe 7, one end of the second gas pipe 7 is closed in the shell 3, be provided with the anti feedback baffle plate 4 for capping the second gas pipe 7 mouths of pipe in the shell 3, anti feedback baffle plate 4 links to each other with the upper end of the second gas pipe 7 mouths of pipe, anti feedback baffle plate 4 is movable, the upper end of described the second gas pipe 7 mouths of pipe is provided with for the pin 5 that connects anti feedback baffle plate 4, the end that described the second gas pipe 7 is closed in the shell 3 is skewed, be convenient to cooperate with the anti feedback baffle plate, the capping better effects if, offer several screw holes 6 on the described shell 3, screw is screwed into screw hole, with fixed housing.
During use, first gas pipe 1 of this device is connected by the first gas pipe dish 2 with the gas drainage under suction main line, the second gas pipe 7 is connected by the second gas pipe dish 8 with the face gas extraction pipeline, when the normal extraction of gas pumping station, anti feedback baffle plate 4 is opened under the effect of negative pressure, normal extraction face gas so just, when the drainage pump cut operates, negative pressure is reduced to zero in the gas pipe, anti feedback baffle plate 4 will fall under action of gravitation, and block the second gas pipe 7 mouths of pipe that connect the face gas extraction pipeline, therefore can block the reflux gas that flows to work plane, prevent that effectively the high concentration gas in the gas drainage pipeline from reentering work plane.
Embodiment
Colliery special-purpose gas tube anti feedback device mainly is comprised of major parts such as Φ 355 gas pipes, Φ 355 gas pipe dishes, 6mm outer cover of steel plate, anti feedback device tongue, pin, screw holes.
Anti feedback device tongue is connected gas pipe to be connected with pin with Φ, Φ 355 gas pipes that are connected with anti feedback device tongue and another Φ 355 gas pipes and 6mm outer cover of steel plate are welded together (seal is definitely good), get screw hole at the 6mm outer cover of steel plate, the anti feedback device is connected with gas drainage under suction main line and face gas extraction pipeline respectively with screw by Φ 355 gas pipe dishes.
Beneficial effect and the technical characteristics of this device are:
1, this device is easy for installation simple, implements easily;
2, this device can prevent that the gas of gas drainage pipeline inside is back to the upper corner of work plane, has solved instantaneous the transfiniting of upper corner gas of causing because of termination of pumping.
Claims (4)
1. coal mine gas pipeline anti feedback device, it is characterized in that: comprise shell (3) and the first gas pipe (1) that links to each other with an end of shell (3), the other end of described shell (3) is provided with the second gas pipe (7), one end of the second gas pipe (7) is closed in the shell (3), be provided with the anti feedback baffle plate (4) for capping the second gas pipe (7) mouth of pipe in the shell (3), anti feedback baffle plate (4) links to each other with the upper end of the second gas pipe (7) mouth of pipe, and anti feedback baffle plate (4) is movable.
2. described a kind of coal mine gas pipeline anti feedback device according to claim 1, it is characterized in that: the upper end of described the second gas pipe (7) mouth of pipe is provided with for the pin (5) that connects anti feedback baffle plate (4).
3. described a kind of coal mine gas pipeline anti feedback device according to claim 1, it is characterized in that: the end that described the second gas pipe (7) is closed in the shell (3) is skewed.
4. described a kind of coal mine gas pipeline anti feedback device according to claim 1 is characterized in that: offer several screw holes (6) on the described shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471553 CN202832630U (en) | 2012-09-14 | 2012-09-14 | Gas return prevention device of coal mine gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471553 CN202832630U (en) | 2012-09-14 | 2012-09-14 | Gas return prevention device of coal mine gas pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202832630U true CN202832630U (en) | 2013-03-27 |
Family
ID=47944362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220471553 Expired - Fee Related CN202832630U (en) | 2012-09-14 | 2012-09-14 | Gas return prevention device of coal mine gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202832630U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527245A (en) * | 2013-10-31 | 2014-01-22 | 四川广旺能源发展（集团）有限责任公司代池坝煤矿 | Drainage device used for gas pumping and releasing pipeline |
| CN110118101A (en) * | 2019-05-15 | 2019-08-13 | 贵州盘江精煤股份有限公司 | A kind of controllable structure on the drainage tube of goaf |
-
2012
- 2012-09-14 CN CN 201220471553 patent/CN202832630U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103527245A (en) * | 2013-10-31 | 2014-01-22 | 四川广旺能源发展（集团）有限责任公司代池坝煤矿 | Drainage device used for gas pumping and releasing pipeline |
| CN110118101A (en) * | 2019-05-15 | 2019-08-13 | 贵州盘江精煤股份有限公司 | A kind of controllable structure on the drainage tube of goaf |
| CN110118101B (en) * | 2019-05-15 | 2024-04-30 | 贵州盘江精煤股份有限公司 | Adjustable structure for goaf extraction pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20130914 |