CN101176813B - Bidirectional flame arrester - Google Patents
Bidirectional flame arrester Download PDFInfo
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- CN101176813B CN101176813B CN2007101910841A CN200710191084A CN101176813B CN 101176813 B CN101176813 B CN 101176813B CN 2007101910841 A CN2007101910841 A CN 2007101910841A CN 200710191084 A CN200710191084 A CN 200710191084A CN 101176813 B CN101176813 B CN 101176813B
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- airflow channel
- water
- channel
- valve core
- flat valve
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 239000002893 slag Substances 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 22
- 239000000725 suspension Substances 0.000 claims description 4
- 238000005065 mining Methods 0.000 abstract description 13
- 238000007599 discharging Methods 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 description 18
- 238000004880 explosion Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to a bidirectional flame arrester, which is characterized in that: an upper airflow channel and a lower airflow channel are arranged; a flat valve core capability for moving bidirectionally along the airflow direction is arranged at the central section of the upper airflow channel; a blanking plate is arranged at two sides of the flat valve core respectively; a round channel is arranged on the blanking plate; the upper airflow channel is a water-sealed channel and is connected under the upper airflow channel; a water injection valve, a reject valve and a water cavity communicated with the upper airflow channel are arranged in the lower airflow channel respectively, and a lower water discharge device is arranged at the bottom of the lower airflow channel. The invention has the advantages that: the invention can be applied to places such as the joint of the uphill main pipe of the mining area and the mining pipe branch of the underground working surface, the uphill lower port of the mining area, the shaft station, and the lower port of standpipes from the ground to underground; fire arresting, water discharging and slag discharging can be realized; the catastrophe can be controlled within the minimum scope due to multilevel fire arresting when the catastrophe occurs.
Description
Technical Field
The invention relates to a bidirectional flame arrester applied to an underground gas extraction pipeline in coal mining, in particular to a bidirectional flame arrester which is arranged in the positions of an underground mining working face extraction branch pipe and a mining area upper mountain main pipe joint point, a mining area upper mountain lower port, a shaft bottom parking lot, a ground to underground vertical pipe lower port and the like, so that an underground gas extraction pipe network is divided into blocks to be mutually independent, multi-stage flame retardance can be realized once catastrophe occurs, and catastrophe is controlled in a minimum range.
Background art:
the gas concentration in the underground gas extraction pipeline is always within the range of a gas explosion region. When a ground permanent or underground mobile system adopts a wet extraction pump to extract gas, the concentration of the gas in a pipeline is not required, because the gas cannot leak out of the pipeline due to negative pressure extraction under the condition of gas leakage of the pipeline, generally speaking, the gas can not leak out of the pipeline, but air can only enter the pipeline from the outside of the pipeline, the gas extraction concentration is reduced, even if open fire exists in a roadway, the gas cannot be transmitted into the pipeline, and the safety has no major influence. However, when the residual coal in the goaf is naturally ignited in the coal seam, a drill hole is drilled, flame can be transmitted into the gas extraction pipeline, in order to prevent accidents and strengthen the safety measures of the underground gas extraction system, when low-concentration gas extraction and utilization are carried out, underground catastrophe prevention measures are taken, and the catastrophe can be controlled in the minimum range. Therefore, the underground fire-retardant pressure-relief water-drainage slag-discharging device is needed, and is respectively arranged in front of a stubble combining point of an extraction branch pipe of a mining working face and an uphill main pipe of a mining area, at an uphill lower port of the mining area, at a shaft bottom yard and at various positions from the ground to an underground vertical pipe lower port. However, no suitable underground bidirectional flame arrester exists at home and abroad up to now.
The invention content is as follows:
the invention aims to overcome the defects in the prior art, and provides an underground bidirectional flame arrester to realize block division of an underground gas extraction pipe network, so that the underground gas extraction pipe network is mutually independent, and catastrophe is controlled in a minimum range through multi-stage flame arresting.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the invention relates to a bidirectional flame arrester, which is characterized in that an upper airflow channel and a lower airflow channel are arranged; wherein,
the middle part of the upper air flow channel is provided with a flat valve core capable of moving in two directions along the air flow direction, two sides of the flat valve core are respectively provided with a blocking plate, the blocking plates are provided with circular channels, and the flat valve core has two states, namely the flat valve core is positioned between the blocking plates at the two sides and separated from the blocking plates at the two sides, and the periphery of the flat valve core and the circular channels in the blocking plates form the upper air flow channel; the other one is that the flat valve core is attached to a blocking plate at one side due to the impact of air pressure, and an upper air flow channel is closed;
the lower airflow passage is a water-sealed passage and is connected below the upper airflow passage, and a water injection valve, an overflow pipe, a slag discharge valve and a water cavity communicated with the upper airflow passage are respectively arranged in the lower airflow passage.
The invention also has the structural characteristics that:
the flat valve core is suspended by a suspension above the flat valve core.
An automatic water discharger is arranged in the overflow pipe.
The invention utilizes the principle that the pressure is ahead of the flame speed during the gas combustion and explosion. Two upper and lower airflow channels are arranged in the device, and in a normal state, gas enters the bidirectional flame arrester from the air inlet side through the upper airflow channel, flows through the circular channel on the blocking plate on the air inlet side, bypasses around the bidirectional flat valve element, then flows out from the air outlet side through the circular channel on the blocking plate on the air outlet side. If gas explosion is generated in the pipeline on the air inlet side, when the pressure of the impact air flow is greater than the set automatic closing pressure value of the bidirectional flat valve core, the bidirectional flat valve core is pushed by the impact air flow to instantly close the circular channel on the air outlet side blocking plate, then the coming flame air flow can only pass through the lower air flow channel, namely the water-sealed air flow channel, the air flow pushes against the water in the water cavity to move, so that the water flow enters the air outlet side pipeline before the air flow, a columnar air-water mass is formed, the propagation channel of the flame is cut off, and the purpose of fire retardance is realized.
The invention is also provided with the overflow pipe, when the water flowing into the water cavity in the pipeline exceeds the water level line, the water flows into the automatic water discharger connected with the overflow pipe from the overflow pipe, and the redundant water is discharged through the automatic water discharger.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has the function of bidirectional fire resistance, can discharge water and discharge slag, is respectively arranged in front of a stubble combining point of an extraction branch pipe of a mining working face and an upper mountain main pipe of a mining area, is arranged at an upper mountain lower port of the mining area, is arranged at a shaft bottom yard, and is arranged at each position from the ground to a lower port of an underground vertical pipe, can realize block division of an underground gas extraction pipe network, enables the blocks to be mutually independent, and controls catastrophe to be in a minimum range through multi-stage fire resistance.
2. The invention is provided with the two-way valve structure, and can play roles of fire resistance and explosion suppression no matter catastrophe occurs in the pipeline at the air inlet side or the air outlet side.
3. The invention can be arranged in a negative pressure side pipeline and a downhole pipeline, and also can be arranged in a positive pressure side pipeline and an air inlet end of a ground gas generator set, so that when catastrophes occur between the gas generator sets and in the air supply pipeline, the fire retardance can be realized independently, and the catastrophes can be controlled in a minimum range.
Description of the drawings:
FIG. 1 is a schematic view of the structure of the present invention.
Reference numbers in the figures: 1 water injection valve, 2 water cavities, 3 slag discharge valves, 4 suspension frames, 5 valve cores, 6 blocking plates, 7 circular channels, 8 overflow pipes and 9 water level lines.
The invention is further described by the following detailed description, taken in conjunction with the accompanying drawings:
the specific implementation mode is as follows:
referring to fig. 1, the present bi-directional flame arrestor is provided with two upper and lower airflow channels.
The middle part of the upper air flow channel is a flat valve core 5 which can move in two directions along the air flow direction, two sides of the flat valve core 5 are respectively provided with a blocking plate 6, the blocking plates 6 are provided with circular channels 7, the flat valve core 5 has two states, firstly, the flat valve core 5 is positioned between the blocking plates 6 at the two sides and separated from the blocking plates 6 at the two sides, and the periphery of the flat valve core 5 and the circular channel in the middle of the blocking plates 6 form an upper air flow channel; the other one is that the flat valve core 5 is attached to the blocking plate 6 at one side due to the impact of air pressure, and the air flow channel at the upper part is closed;
the lower airflow channel is a water-sealed channel and is connected below the upper airflow channel, a water injection valve 1, an overflow pipe 8, a slag discharge valve 3 and a water cavity 2 communicated with the upper airflow channel are respectively arranged in the lower airflow channel, and an automatic water discharger is arranged in the overflow pipe 8.
The water discharging principle is as follows:
the overflow pipe 8 is connected with the automatic water discharger, when the water flowing into the water cavity 2 in the pipeline exceeds the water level line 9, the water flows into the automatic water discharger from the overflow pipe 8, and the redundant water is discharged.
In a specific implementation, the flat valve core 5 is suspended by the upper suspension 4.
In the deslagging process, the deslagging valve 3 is manually opened and the water injection valve 1 is opened to flush and deslagging in the gas-off state.
Before the automatic water discharger is put into use, the water injection valve 1 is opened to inject water into the device until water flowing out of the overflow pipe 8 enables the connected automatic water discharger to start discharging water. When the bidirectional flame arrester is in normal use, water in the water cavity 2 can be supplemented by water in the extraction pipeline, and redundant water can flow into the automatic water drainage device through the overflow pipe 8 and be discharged.
The invention can be directly installed in a ground gas conveying or underground gas extraction pipeline system and is designed according to the straight path and the flow of an installation pipeline. The principle of the specific setting position is as follows: the underground gas extraction pipe network can be divided into blocks which are mutually independent, multi-stage fire resistance during catastrophe is realized, and catastrophe is controlled in a minimum range.
The invention can also be arranged at the front end of the air inlet of the gas generator set to prevent the gas in the pipeline from being detonated by the tempering of the cylinder of the gas generator set.
Claims (3)
1. The bidirectional flame arrester is characterized in that an upper airflow channel and a lower airflow channel are arranged; wherein,
the middle part of the upper air flow channel is provided with a flat valve core (5) capable of moving in two directions along the air flow direction, two sides of the flat valve core (5) are respectively provided with a blocking plate (6), the blocking plates (6) are provided with circular channels (7), the flat valve core (5) has two states, firstly, the flat valve core (5) is positioned between the blocking plates (6) at the two sides and separated from the blocking plates (6) at the two sides, and the periphery of the flat valve core (5) and the circular channels (7) in the blocking plates (6) form an upper air flow channel; the other one is that the flat valve core (5) is attached to the blocking plate (6) at one side due to the impact of air pressure, and the upper airflow channel is closed;
the lower airflow channel is a water-sealed channel and is connected below the upper airflow channel, and a water injection valve (1), an overflow pipe (8), a slag discharge valve (3) and a water cavity (2) communicated with the upper airflow channel are respectively arranged in the lower airflow channel.
2. A bi-directional flame arrestor as claimed in claim 1, characterized in that the plate spool (5) is suspended by its upper suspension (4).
3. A bi-directional flame arrestor as defined in claim 1 in which an automatic water discharger is provided in the overflow pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101910841A CN101176813B (en) | 2007-12-06 | 2007-12-06 | Bidirectional flame arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101910841A CN101176813B (en) | 2007-12-06 | 2007-12-06 | Bidirectional flame arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101176813A CN101176813A (en) | 2008-05-14 |
| CN101176813B true CN101176813B (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101910841A Active CN101176813B (en) | 2007-12-06 | 2007-12-06 | Bidirectional flame arrester |
Country Status (1)
| Country | Link |
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| CN (1) | CN101176813B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294087B (en) * | 2011-07-11 | 2012-10-17 | 无锡市华尔泰机械制造有限公司 | Drawer-type flame arrester |
| CN104975867A (en) * | 2015-06-05 | 2015-10-14 | 安徽恒源煤电股份有限公司 | Filtering fire suppression system for coal mine gas extraction pipeline |
| CN107519594B (en) * | 2017-08-18 | 2019-11-05 | 江苏大学 | A kind of multichannel fire arrester and its working method |
| CN109132261A (en) * | 2018-07-20 | 2019-01-04 | 芜湖新瑟安智能科技有限公司 | A kind of storage tank of the oil movement and storage with explosion prevention function |
| CN109882234A (en) * | 2019-04-08 | 2019-06-14 | 贵州盘江精煤股份有限公司 | A kind of disconnected pipe structure for coal mine gob pipe laying |
| CN112107820B (en) * | 2019-06-19 | 2021-12-31 | 中国石油化工股份有限公司 | Explosion-proof flame arrester for pipeline |
| CN110251864B (en) * | 2019-06-26 | 2020-08-14 | 宿州市徽腾知识产权咨询有限公司 | Spark suppression device |
| CN113244550B (en) * | 2021-07-14 | 2021-09-07 | 江苏嘉胜石油科技有限公司 | High-stability storage tank free discharge flame arrester |
| CN114234054B (en) * | 2021-12-27 | 2024-07-16 | 辽宁工程技术大学 | Intelligent early warning explosion-proof device for low-concentration gas conveying pipeline |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1044888A (en) * | 1963-05-02 | 1966-10-05 | Jan Neumann | Improved plate closure device for preventing flames spreading in tubing |
| CN2827440Y (en) * | 2005-09-15 | 2006-10-18 | 胜利油田胜利动力机械有限公司 | Dry flame trap used in gas pipe |
-
2007
- 2007-12-06 CN CN2007101910841A patent/CN101176813B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1044888A (en) * | 1963-05-02 | 1966-10-05 | Jan Neumann | Improved plate closure device for preventing flames spreading in tubing |
| CN2827440Y (en) * | 2005-09-15 | 2006-10-18 | 胜利油田胜利动力机械有限公司 | Dry flame trap used in gas pipe |
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| Publication number | Publication date |
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| CN101176813A (en) | 2008-05-14 |
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Application publication date: 20080514 Assignee: ViewSonic energy (Fukang) Coal Industry Co Ltd Assignor: National Engineering Research Center for Gas Controlling of Pingan Mine Contract record no.: 2013990000576 Denomination of invention: Bidirectional flame arrester Granted publication date: 20101117 License type: Common License Record date: 20130911 |
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