CN110568148A - shield constructs quick-witted native storehouse methane gas detection system - Google Patents
shield constructs quick-witted native storehouse methane gas detection system Download PDFInfo
- Publication number
- CN110568148A CN110568148A CN201910898809.3A CN201910898809A CN110568148A CN 110568148 A CN110568148 A CN 110568148A CN 201910898809 A CN201910898809 A CN 201910898809A CN 110568148 A CN110568148 A CN 110568148A
- Authority
- CN
- China
- Prior art keywords
- pump
- suction type
- methane
- detection system
- type gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 239000002689 soil Substances 0.000 claims abstract description 35
- 230000000007 visual effect Effects 0.000 claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 9
- 230000005641 tunneling Effects 0.000 claims abstract description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 238000007689 inspection Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 64
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
Abstract
The invention discloses a shield machine soil bin methane gas detection system which comprises a pump-suction type gas detector, a protective cover and an acousto-optic alarm, wherein the pump-suction type gas detector is arranged in a box body, and the box body is fixed on a horizontal rib plate behind a front shield partition plate; the air inlet end of the pump-suction type gas detector is connected with a hose and a ball valve, and the ball valve is connected with an air inlet hole in the front shield partition plate; the pump suction type gas detector is communicated with high-pressure air; the protective cover is welded at the air inlet of the methane gas detection system on the side of the soil bin; and the two audible and visual alarms are respectively arranged opposite to the equipment bridge and the first trailer main control room. The invention can continuously detect the methane gas in the soil bin of the shield tunneling machine at regular time, and solves the problem that the methane in the soil bin can not be detected in time; the safety accidents caused by methane during the inspection, maintenance and repair of the shield tunneling machine are avoided, and the personal safety and the construction safety are ensured.
Description
Technical Field
The invention relates to a shield machine soil bin methane gas detection system, and belongs to the technical field of tunnel engineering.
Background
The shield constructs the machine and is a tunnel tunnelling's special engineering machine tool, and the shield constructs the machine when the construction, and operating space is narrow and small, and is harmful, toxic gas gathers easily, and common harmful, toxic gas generally have: carbon monoxide, hydrogen sulfide, and the like. Meanwhile, methane gas in the soil warehouse cannot be ignored, the methane is usually generated in a soil layer containing organic substances, the organic substances are generated by the decomposition action of bacteria under the anaerobic condition, and the content of the methane is related to the content of the organic substances in the soil layer. Methane is generally present in a cohesive soil layer with poor water and air permeability above sand and gravel layers. However, in the construction process of the shield machine, if a geology with a large organic matter content is encountered, the methane content in the soil warehouse may exceed the standard, and the construction has a large risk. On one hand, when the shield machine is used for opening the bin for inspection and replacing the cutter, methane gas in the soil bin can be leaked into the working environment, so that the operation safety of constructors is threatened; on the other hand, the rotation of the cutter head and the friction of the soil layer can generate sparks, and methane has inflammable and explosive properties and is easy to explode when meeting open fire. Therefore, the methane gas detection link in the soil bin of the shield machine is indispensable, and when the methane content is detected to exceed the standard, corresponding effective measures should be taken in time to ensure the safety of personnel and construction. Traditional shield constructs quick-witted methane gas detection and adopts hand-held type methane detection appearance, and this mode needs staff hand-held instrument to carry out methane gas detection, and the randomness is stronger in time, and inconvenient long-time continuity detects methane gas's content, consuming time power.
Disclosure of Invention
The invention aims to solve the technical problem of providing a shield tunneling machine soil bin methane gas detection system aiming at the defects in the prior art.
In order to solve the technical problem, the invention provides a methane gas detection system for a soil bin of a shield machine, which comprises a pump-suction type gas detector, a protective cover and an audible and visual alarm, wherein the pump-suction type gas detector is arranged in a box body, and the box body is fixed on a horizontal rib plate behind a front shield partition plate; the air inlet end of the pump-suction type gas detector is connected with a hose and a ball valve, and the ball valve is connected with an air inlet hole in the front shield partition plate; the pump suction type gas detector is communicated with high-pressure air; the protective cover is welded at the air inlet of the methane gas detection system on the side of the soil bin; and the two audible and visual alarms are respectively arranged opposite to the equipment bridge and the first trailer main control room.
The pump suction type gas detector comprises a water-gas separation device, a filtering dryer, a label gas port, a detector, a gas pump, an explosion-proof power switch and the like, wherein a flow meter and the gas pump are arranged in front of the water-gas separation device, and the filtering dryer and the filter are connected with the back of the water-gas separation device.
The detector part is set to be in a transparent and visible mode.
The protective cover is in a half-section circular tube form, is welded on the front shield conical plate and is used for protecting the air inlet hole part of the soil bin side pump suction type gas detector.
The box body is made of stainless steel.
Has the advantages that: the invention is a fixed intelligent methane gas detector, can continuously detect the methane gas in the soil bin of the shield machine at regular time, saves manpower and material resources compared with the traditional handheld gas detector, and automatically alarms by an audible and visual alarm when the methane exceeds the standard so as to prompt constructors to timely process the methane in the soil bin. The problem that methane in the soil bin cannot be detected in time is solved; the safety accidents caused by methane during the inspection, maintenance and repair of the shield tunneling machine are avoided, and the personal safety and the construction safety are ensured.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic view of the protective cover of the present invention;
3 FIG. 33 3 is 3 a 3 schematic 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 32 3 of 3 the 3 protective 3 shield 3 of 3 the 3 present 3 invention 3; 3
FIG. 4 is a schematic view of the position of the air intake holes of the present invention;
FIG. 5 is an electrical schematic diagram of the audible and visual alarm of the present invention.
In the figure: the device comprises a soil bin 1, a ball valve I2, a hose 3, a metal film filter 4, a ball valve II 5, a flowmeter I6, an air pump controller 7, an air pump 8, a water-gas separator 9, a filter drier 10, a filter 11, a pressure reducing valve I12, a pressure reducing valve II 13, a three-way valve 14, a flowmeter II 15, an air chamber 16, an explosion-proof power switch 17, a detector 18, a pressure reducing valve III 19, a ball valve III 20, a pressure gauge 21, a gas marking port 22, a pump suction type gas detector 23, a cone plate 24, a protective cover 25, a partition plate 26, a shell 27, a methane gas transmitter 28, a shield machine main control chamber 29, an air inlet 30, a main control chamber opposite audible and visual alarm 31, an equipment bridge.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Fig. 1 shows a schematic diagram of the present invention.
The device comprises a pump-suction type gas detector 23, a protective cover 25 and acousto-optic alarms 31 and 32, wherein the pump-suction type gas detector 23 is arranged in a box body, and the box body is fixed on a horizontal rib plate 33 behind a front shield partition plate 26. The air inlet end of the pump-suction type gas detector 23 is connected with a ball valve I2 of the front shield partition plate 26 through a hose 3, and the ball valve I2 is installed at the air inlet 30 of the partition plate 26. (the inlet hole positions are shown in FIG. 4).
The protective cover 25 is welded at the position of an air inlet 30 of the methane gas detection system at one side of the soil bin 1; the two audible and visual alarms 31 and 32 are respectively arranged opposite to the equipment bridge and the first trailer main control room.
The back of an inlet hose 3 of the pump-suction type gas detector 23 is connected with a metal film filter 4, a back connection ball valve II 5, a back connection flowmeter I6, a back connection air pump 8, a back connection water-gas separator 9, a back connection filter drier 10, a back connection filter 11, a back connection pressure reducing valve I12, a back connection three-way valve 14, a back connection flowmeter II 15, a back connection air chamber 16, a back connection detector 18 and finally an emptying pipeline.
The pumping type gas detector 23 is characterized in that a high-pressure air pipeline is connected between the metal film filter 4 and the second ball valve 5, high-pressure air is connected to the pumping type gas detector 23 through a third pressure reducing valve 19 and a third ball valve 20, and a pressure gauge 21 is connected between the third pressure reducing valve 19 and the third ball valve 20.
The pump-suction type gas detector 23 is connected with the second pressure reducing valve 13 and the emptying pipeline between the filter 11 and the first pressure reducing valve 12.
The other port of the three-way valve 14 of the pump-suction type gas detector 23 is provided with a standard gas port 22.
The position of the box body detector 18 of the pump suction type gas detector 23 is set to be in a transparent visual form.
Fig. 2 is a schematic structural view of the protective cover of the present invention.
3 fig. 33 3 is 3 a 3 schematic 3 cross 3- 3 sectional 3 view 3 a 3- 3 a 3 of 3 fig. 32 3 of 3 the 3 protective 3 cover 3 of 3 the 3 present 3 invention 3. 3
The protective cover 25 is a half-section circular tube, is welded on the front shield conical plate 24 and is used for protecting the air inlet 30 part of the soil bin side pump suction type gas detector 23.
The box body is made of stainless steel.
Fig. 5 is an electrical schematic diagram of the audible and visual alarm of the present invention.
After the methane gas is detected by the gas-suction detector 23, the methane gas transmitter 28 sends out a corresponding signal, the signal is divided into two paths, one path is sent to the audible and visual alarm 32 of the equipment bridge, the other path is sent to the audible and visual alarm 31 opposite to the main control room, and the two alarms alarm simultaneously.
The working process of the invention is as follows:
Firstly, an operator closes the third ball valve 20 of the high-pressure air pipeline, opens the explosion-proof power switch 17 of the pump-suction type gas detector 23, injects methane gas into the mark gas port 22, and sends out a signal when the pump-suction type gas detector 23 detects the methane gas, so that the audible and visual alarms 31 and 32 respond to verify the integrity of the pump-suction type gas detector 23 and the audible and visual alarm system.
Then, the methane that tests in the evacuation pump suction type gas detector 23 opens ball valve 2, and the gaseous pump suction type gas detector 23 that gets into through ball valve 2, hose 3 in the soil storehouse 1, links such as a series of aqueous vapor separation, drying, filtration, and pump suction type gas detector 23 detects out the content of the gaseous methane in the soil storehouse 1, makes corresponding action according to the testing result: if the content of methane exceeds the standard, the pump suction type gas detector 23 sends out an alarm signal, and the two audible and visual alarms 31 and 32 respond at the same time; if the methane content does not exceed the standard, the two audible and visual alarms 31 and 32 do not act, and the gas entering the pump-suction gas detector 23 is finally exhausted.
If the air inlet 30 of the methane gas detection system is blocked, closing a ball valve II 5 leading to the pump-suction gas detector 23, opening a ball valve III 20 and a ball valve I2 of a high-pressure air pipeline, introducing high-pressure air, and dredging the blocked air inlet 30; and after the air inlet 30 is dredged, closing the ball valve III 20 of the high-pressure air path, opening the ball valve II 5 leading to the pumping type gas detector 23, and recovering the methane gas detection system to be in a normal working state.
The invention is a fixed intelligent methane gas detector, can continuously detect the methane gas in the soil bin of the shield machine at regular time, saves manpower and material resources compared with the traditional handheld gas detector, and automatically alarms by an audible and visual alarm when the methane exceeds the standard so as to prompt constructors to timely process the methane in the soil bin. The problem that methane in the soil bin cannot be detected in time is solved; the safety accidents caused by methane during the inspection, maintenance and repair of the shield tunneling machine are avoided, and the personal safety and the construction safety are ensured.
The above-described embodiments of the invention are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (6)
1. The utility model provides a shield constructs quick-witted native storehouse methane gas detection system which characterized in that: the device comprises a pump-suction type gas detector (23), a protective cover (25) and acousto-optic alarms (31, 32), wherein the pump-suction type gas detector (23) is arranged in a box body, and the box body is fixed on a horizontal rib plate (33) behind a front shield partition plate (26); a first ball valve (2) connected with an air inlet (30) on the clapboard (26) is connected with a hose (3) of the pump-suction type gas detector (23); the protective cover (25) is welded at the position of an air inlet (30) of the methane gas detection system at one side of the soil bin (1); the two audible and visual alarms (31 and 32) are respectively arranged opposite to the equipment bridge and the first trailer main control room.
2. The shield machine soil bin methane gas detection system of claim 1, wherein: the pump suction type gas detector (23) comprises a gas pump (8), a water-gas separator (9), a filtering dryer (10), a detector (18), a standard gas port (22) and an explosion-proof power switch (17), and the pump suction type gas detector (23) is provided with a high-pressure air pipeline and a standard gas port pipeline; the air marking hole (30) is used for testing the reliability and accuracy of the pump-suction type gas detector (23).
3. The shield machine soil bin methane gas detection system of claim 2, wherein: the high-pressure air pipeline is provided with a third pressure reducing valve (19), a pressure gauge (21) and a third ball valve (20), is connected between the metal film filter (4) and the second ball valve (5), and is used for dredging air inlets (30) of the soil bin (1) and preventing the air inlets (30) from being blocked to influence the use of equipment.
4. The shield machine soil bin methane gas detection system of claim 2, wherein: the position of the box body detector (18) is set to be in a transparent visual form.
5. The shield machine soil bin methane gas detection system of claim 1, wherein: the protective cover (25) is a half-section circular tube, is welded on the front shield conical plate (24) and is used for protecting the air inlet (30) of the soil bin side pump suction type gas detector (23).
6. the shield tunneling machine earth bin methane gas detection system according to any one of claims 1-5, characterized in that: the box body is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898809.3A CN110568148A (en) | 2019-09-23 | 2019-09-23 | shield constructs quick-witted native storehouse methane gas detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910898809.3A CN110568148A (en) | 2019-09-23 | 2019-09-23 | shield constructs quick-witted native storehouse methane gas detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110568148A true CN110568148A (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910898809.3A Pending CN110568148A (en) | 2019-09-23 | 2019-09-23 | shield constructs quick-witted native storehouse methane gas detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110568148A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175450A (en) * | 2020-01-10 | 2020-05-19 | 中铁十四局集团大盾构工程有限公司 | Real-time detection device for harmful gas in excavation bin of large-diameter slurry shield machine |
| CN112710781A (en) * | 2020-11-26 | 2021-04-27 | 中船重型装备有限公司 | Device and method for detecting gas in shield robot cabin |
| CN112746851A (en) * | 2021-01-15 | 2021-05-04 | 中铁建昆仑地铁投资建设管理有限公司 | Gas prevention and control system for shield machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217375A (en) * | 1994-01-28 | 1995-08-15 | Kajima Corp | Detection system of toxic gas in facing shield method |
| CN204719026U (en) * | 2015-05-13 | 2015-10-21 | 中国神华能源股份有限公司 | A kind of gas detecting device and shield machine |
| CN208010352U (en) * | 2018-02-26 | 2018-10-26 | 厦门厦工中铁重型机械有限公司 | A kind of shield machine people cabin safety monitoring system |
| CN208805503U (en) * | 2018-06-13 | 2019-04-30 | 中铁十四局集团大盾构工程有限公司 | A kind of pernicious gas automatic checkout system for the storehouse shield machine Ren Zha |
| CN211553978U (en) * | 2019-09-23 | 2020-09-22 | 济南重工集团有限公司 | Shield constructs quick-witted native storehouse methane gas detection system |
-
2019
- 2019-09-23 CN CN201910898809.3A patent/CN110568148A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07217375A (en) * | 1994-01-28 | 1995-08-15 | Kajima Corp | Detection system of toxic gas in facing shield method |
| CN204719026U (en) * | 2015-05-13 | 2015-10-21 | 中国神华能源股份有限公司 | A kind of gas detecting device and shield machine |
| CN208010352U (en) * | 2018-02-26 | 2018-10-26 | 厦门厦工中铁重型机械有限公司 | A kind of shield machine people cabin safety monitoring system |
| CN208805503U (en) * | 2018-06-13 | 2019-04-30 | 中铁十四局集团大盾构工程有限公司 | A kind of pernicious gas automatic checkout system for the storehouse shield machine Ren Zha |
| CN211553978U (en) * | 2019-09-23 | 2020-09-22 | 济南重工集团有限公司 | Shield constructs quick-witted native storehouse methane gas detection system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175450A (en) * | 2020-01-10 | 2020-05-19 | 中铁十四局集团大盾构工程有限公司 | Real-time detection device for harmful gas in excavation bin of large-diameter slurry shield machine |
| CN112710781A (en) * | 2020-11-26 | 2021-04-27 | 中船重型装备有限公司 | Device and method for detecting gas in shield robot cabin |
| CN112746851A (en) * | 2021-01-15 | 2021-05-04 | 中铁建昆仑地铁投资建设管理有限公司 | Gas prevention and control system for shield machine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200427 Address after: 250109 No. 12798 Airport Road, Licheng District, Shandong, Ji'nan Applicant after: Jinan Heavy Industry Group Co., Ltd Address before: 250109 eastern suburbs Airport Road, Ji'nan, Shandong Applicant before: JINAN HEAVY MACHINERY JOINT-STOCK Co.,Ltd. |
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| TA01 | Transfer of patent application right |