CN202057373U - Testing device for gas flow from boreholes in water-rich coal seam - Google Patents
Testing device for gas flow from boreholes in water-rich coal seam Download PDFInfo
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- CN202057373U CN202057373U CN2011201038760U CN201120103876U CN202057373U CN 202057373 U CN202057373 U CN 202057373U CN 2011201038760 U CN2011201038760 U CN 2011201038760U CN 201120103876 U CN201120103876 U CN 201120103876U CN 202057373 U CN202057373 U CN 202057373U
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Abstract
The utility model discloses a testing device for gas flow from boreholes in a water-rich coal seam, which comprises a steel tube. A gas outlet channel and a water outlet channel are arranged in the steel tube; a gas-water separation device is arranged in the gas outlet channel; the gas outlet channel at the rear side of the gas-water separation device is connected with a flowmeter; and the water outlet channel is connected with a water storage tank. The testing device for the gas flow from the boreholes in the water-rich coal seam aims to solve the problem that the gas flow cannot be accurately measured when the boreholes are drained in the water-rich coal seam; and through installing the gas-water separation device, the measurement accuracy of the gas flow is improved, thus, accurate data are provided for research on coal and gas outburst.
Description
Technical field
The utility model relates to a kind of water gas flow quantity from boreholes in coal seam proving installation that is rich in.
Background technology
Coal and gas are outstanding to be a kind of extraordinary serious natural calamity of serious threat coal mine downhole safety.It not only threatens the personal safety of coal miner, also is the principal element of restriction Coal Production.Colliery boring gas drainage is a kind of important means of carrying out coal and gas preventing and control, for the extraction radius that increases extraction boring, improve the extraction rate, China gas worker works out and can carry out that after holing waterfrac treatment, waterpower are extruded etc. measure improves the gas penetration potential in coal seam.
Transform the gas penetration potential in coal seam, back and increase situation in order to understand boring, carry out waterfrac treatment through being everlasting, waterpower is extruded back installation measuring apparatus and carried out the test of gas flow, gas density; When the coal seam property of water-bearing more after a little while, the water by gas meter is seldom, and is little to the test order of accuarcy influence of gas flow; But when water is rich in the coal seam, by gas meter methane gas not only arranged, also have water simultaneously, cause the gas flow test data seriously inaccurate.Simultaneously, the polyurethane hole-sealing technology is a hole-sealing technology commonly used at present, but for being rich in the water coal seam, may expand behind the chance water, causes the sealing of hole poor effect, also can influence the accuracy of test data.And the order of accuarcy of test data may have influence on the research in later stage.Therefore want just must improve measuring accuracy by certain technology or method for later stage research provides accurate data.Only in this way just may make rational extraction process program, improve the security of seam mining, and then improve coal production, promote the development of coal industry.
The utility model content
The purpose of this utility model provides a kind of at being rich in the not accurate enough problem of water coal seam extraction boring gas flow mensuration, and by the installation gas and water separator, thereby the accuracy that the raising gas flow is measured is the outstanding accurate data that provides of studying of coal and gas.
For achieving the above object, the utility model adopts following technical scheme: a kind of water gas flow quantity from boreholes in coal seam proving installation that is rich in, comprise steel pipe, outlet passageway and exhalant canal are set in the steel pipe, gas and water separator is set in the outlet passageway, the outlet passageway of gas and water separator rear side is connected with flowmeter, and exhalant canal is connected with reserve tank.
Described exhalant canal is a rising pipe, and outlet passageway is an escape pipe, and described flowmeter is arranged at rising pipe and stretches out the outer part of steel pipe, and reserve tank is connected in and stretches out the outer rising pipe end of steel pipe.
Described pipe diameter is to being provided with fixing steel plate, and fixing steel plate and steel pipe intracavity section shape are suitable, and fixing steel plate is provided for connecting the air intake opening and the water inlet that is used to be connected rising pipe of escape pipe.
Described gas and water separator comprises at the cross baffle plate that the escape pipe inflow point of air intake opening rear side is provided with, between air intake opening and the cross baffle plate and be fixedly connected on the gas-water separation film that covers on mesh-supported body on the escape pipe inwall and the supporter.
Described gas and water separator be arranged in the escape pipe, with certain intervals at least two, the escape pipe between adjacent two gas and water separators partly is communicated with auxiliary rising pipe, auxiliary rising pipe is connected with reserve tank.
Described reserve tank is the casing that surplus valve is set, the sidewall bottom of casing is provided with the dewatering outlet, surplus valve comprises control lever and the floating body that all is positioned at casing, control lever comprises the cross bar that montant and montant top set firmly, floating body is positioned at the end of cross bar, and corresponding dewatering outlet, the bottom of montant is provided with, and control lever and wall box are slidingly connected, and wall box is provided with vertical slideway, and described montant is positioned at slideway.
Described escape pipe is a steel tubular goods, and rising pipe and auxiliary rising pipe are flexible pipe.
The beneficial effects of the utility model are:
1) gas-water separation system
This system mainly is that gas and water separator is that the gas-water separation film carries out gas-water separation, and the gas after will separating and liquid are discharged respectively.When after the coal bed drilling success, steel pipe is installed in the aperture, in the place of distance steel pipe bottom certain distance steel pipe is divided into two passages up and down.The gas-water separation film is installed on top, because gas density is smaller, and the gas-water separation film of installing only allows gas to pass through, and liquid is left on the outside of film.Thereby gas is flowed out from upper pipe, and the liquid (mainly being the water vapor in the gas) that makes part be left on the outside flows into the passage of bottom under the effect of gravity, finally flow into reserve tank.Most water is the passage that flows directly into the bottom from the bottom of steel pipe in the reservoir, finally flows into reserve tank.For preventing that the gas-water separation film from being washed out, with the support body supports that has a large amount of spaces, wherein supporter is fixed on the steel pipe walls in its back.
For making measurement more accurate, air water is thoroughly separated, can adopt stage trapping, only carry out two-stage at this and separate.Through the liquid that separate the second level, be equally through being gathered into drip after, flow under the influence of gravity into the auxiliary rising pipe of escape pipe bottom, finally flow into reserve tank.By making the pipeline between the two-stage gas-water separation film that certain decline angle be arranged, can make fluid wherein all flow into auxiliary rising pipe.
When the diameter of definite two passages up and down, should determine with relevant gas production rate, water production rate data according to on-site actual situations.When water production rate is big, gas production rate more after a little while, can increase the diameter of rising pipe, reduce the diameter of escape pipe; When, gas production rate less when water production rate is big, should reduce the diameter of rising pipe, increase the diameter of escape pipe.Should make diameter of steel tube bigger than normal simultaneously, avoid liquid to be full of whole steel pipe.Want simultaneously regularly to inject an amount of clear water to reservoir, film is cleaned by escape pipe.
Gas can not flow out from water delivering orifice in fluid inflow reserve tank process, so gas can only flow out from the escape pipe on top.Because the gas-water separation film does not allow liquid to pass through, so liquid can only be from the rising pipe outflow of bottom, and this has also just really realized gas-water separation.
2) water delivering orifice control system
This system mainly is by the liquid level of surplus valve control reserve tank, and liquid can constantly be flowed into.Suitable float is installed in reserve tank, and when liquid level reach a certain height, float was mentioned control lever under buoyancy function, and water delivering orifice is opened, and the liquid in the reserve tank begins to flow out.Flow out a certain amount of after, the liquid level of reserve tank reduces, floating body descends, and then control lever is descended make water delivering orifice be in shutdown system again.Control lever all around moves in the liquid surface lifting process in order to avoid, and at this fixing device for installing, control lever can only be moved up and down.When design, to calculate, even avoid floating body the phenomenon that control lever can not mentioned in the entry fully according to the weight of control lever.
3) flow measurement system
This system measures flow by flowmeter.Wherein sensing equipment has a lot, mainly contains electromagnetic flowmeter, turbo flow meter, ultrasonic flow meter, target type meter and vortex precession flowmeter etc.Can use electromagnetic flowmeter at this.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A view among Fig. 1.
Embodiment
By the water gas flow quantity from boreholes in coal seam proving installation that is rich in illustrated in figures 1 and 2, comprise steel pipe 1, outlet passageway and exhalant canal are set in the steel pipe 1, gas and water separator is set in the outlet passageway, the outlet passageway of gas and water separator rear side is connected with flowmeter 5, and exhalant canal is connected with reserve tank 7.Described exhalant canal is a rising pipe 6, and outlet passageway is an escape pipe 4, steel pipe 1, rising pipe 6 and escape pipe 4 equal horizontally sets, rising pipe 6 and escape pipe 4 upper and lower settings.Escape pipe 4 stretches out the outer part of steel pipe 1 measuring tube 17 that has been threaded, and described flowmeter 5 is arranged on this measuring tube 17.Reserve tank 7 is connected in rising pipe 6 ends that stretch out outside the steel pipe 1.Described escape pipe 4 is a steel tubular goods, and rising pipe 6 is a flexible pipe.Flowmeter 5 can use electromagnetic flowmeter at this for electromagnetic flowmeter or turbo flow meter or ultrasonic flow meter or target type meter or vortex precession flowmeter etc.
Described reserve tank 7 is for being provided with the casing of surplus valve, the sidewall bottom of casing is provided with dewatering outlet 11, surplus valve comprises control lever and the floating body 10 that all is positioned at casing, control lever comprises the cross bar 19 that montant 18 and montant 18 tops set firmly, floating body 10 is positioned at the end of cross bar 19, and corresponding dewatering outlet 11, the bottom of montant 18 is provided with, and control lever and wall box are slidingly connected, and wall box is provided with vertical slideway, and described montant 18 is positioned at slideway.Set firmly fixed block 9 and fixed head 20 on the wall box, the vertical gap between fixed block 9 and the fixed head 20 is the slideway of montant 18.
Operational procedure of the present utility model is:
1) requires plugging system is set according to injecting, be ready to plugging material, check whether this analyzer has an ancient egg-shaped, holed wind instrument bad, guarantee that it can operate as normal.(this system carries out the effect of shutoff, avoids flowing out the space of fluid between steel pipe 1 and coal body.This system is by after mixing alditol, urea, sulfuric acid and water according to certain ratio, shutoff is carried out in the gap of injecting between aperture and the steel pipe 1.Before injection, to calculate needed amount of liquid, will carry out fast during injection, avoid liquid not flow into the just cohesion of the purpose degree of depth.The general used proportioning of shutoff is alditol: urea=1:1, and the sulfuric acid consumption is 1%.But can rationally regulate proportioning according to the actual conditions at scene and the degree of depth of injection.）
2) injection pump and other equipment are put in place and checked.
3) steel pipe 1 is put into boring, insert the boring appropriate location.And connect the external connecting part complete.
4) opening injection pump begins to inject.
5) after injecting fully, termination of pumping is solidified it.
The site clearing begins to carry out flow measurement.
Plugging material described in the utility model can improve the sealing of hole effect greatly, avoids fluid to flow out from the space between steel pipe 1 and the coal seam.Thereby improve the accuracy of measuring.And by stage trapping, realize gas-water separation, in the time of can avoiding measuring gas flow rate, liquid is to the influence of its measurement result, make to be rich in the water coal seam when measuring the result more accurate.
Claims (7)
1. one kind is rich in water gas flow quantity from boreholes in coal seam proving installation, it is characterized in that: comprise steel pipe, outlet passageway and exhalant canal are set in the steel pipe, gas and water separator is set in the outlet passageway, the outlet passageway of gas and water separator rear side is connected with flowmeter, and exhalant canal is connected with reserve tank.
2. the water gas flow quantity from boreholes in coal seam proving installation that is rich in as claimed in claim 1, it is characterized in that: described exhalant canal is a rising pipe, outlet passageway is an escape pipe, and described flowmeter is arranged at rising pipe and stretches out the outer part of steel pipe, and reserve tank is connected in and stretches out the outer rising pipe end of steel pipe.
3. the water gas flow quantity from boreholes in coal seam proving installation that is rich in as claimed in claim 2, it is characterized in that: described pipe diameter is to fixing steel plate is set, fixing steel plate and steel pipe intracavity section shape are suitable, and fixing steel plate is provided for connecting the air intake opening and the water inlet that is used to be connected rising pipe of escape pipe.
4. the water gas flow quantity from boreholes in coal seam proving installation that is rich in as claimed in claim 3 is characterized in that: described gas and water separator comprises at the cross baffle plate that the escape pipe inflow point of air intake opening rear side is provided with, between air intake opening and the cross baffle plate and be fixedly connected on the gas-water separation film that covers on mesh-supported body on the escape pipe inwall and the supporter.
5. as each described water gas flow quantity from boreholes in coal seam proving installation that is rich in of claim 1-4, it is characterized in that: described gas and water separator be arranged in the escape pipe, with certain intervals at least two, escape pipe between adjacent two gas and water separators partly is communicated with auxiliary rising pipe, and auxiliary rising pipe is connected with reserve tank.
6. the water gas flow quantity from boreholes in coal seam proving installation that is rich in as claimed in claim 5, it is characterized in that: described reserve tank is the casing that surplus valve is set, the sidewall bottom of casing is provided with the dewatering outlet, surplus valve comprises control lever and the floating body that all is positioned at casing, control lever comprises the cross bar that montant and montant top set firmly, floating body is positioned at the end of cross bar, corresponding dewatering outlet, the bottom of montant is provided with, control lever and wall box are slidingly connected, and wall box is provided with vertical slideway, and described montant is positioned at slideway.
7. the water gas flow quantity from boreholes in coal seam proving installation that is rich in as claimed in claim 6, it is characterized in that: described escape pipe is a steel tubular goods, rising pipe and auxiliary rising pipe are flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201038760U CN202057373U (en) | 2011-04-11 | 2011-04-11 | Testing device for gas flow from boreholes in water-rich coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201038760U CN202057373U (en) | 2011-04-11 | 2011-04-11 | Testing device for gas flow from boreholes in water-rich coal seam |
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| Publication Number | Publication Date |
|---|---|
| CN202057373U true CN202057373U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201038760U Expired - Fee Related CN202057373U (en) | 2011-04-11 | 2011-04-11 | Testing device for gas flow from boreholes in water-rich coal seam |
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| CN (1) | CN202057373U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806420A (en) * | 2016-05-17 | 2016-07-27 | 山东鼎安检测技术有限公司 | Device and method for measuring gas flow of drill hole of water-containing coal bed |
| CN106813721A (en) * | 2017-01-04 | 2017-06-09 | 煤炭科学技术研究院有限公司 | A kind of down-hole drilling gas-water separation formula gas exhaust quantity monitoring method |
| CN107035408A (en) * | 2017-05-24 | 2017-08-11 | 西安科技大学 | Coal bed drilling Gas leak position and gas flow, the detection means and method of concentration |
| CN107524435A (en) * | 2017-10-09 | 2017-12-29 | 开滦(集团)有限责任公司技术中心 | Aqueous determination of coal seam gas pressure device and assay method |
| CN109781601A (en) * | 2018-12-28 | 2019-05-21 | 中国矿业大学(北京) | A kind of aqueous vapor separating and measuring device and application method for gas permeability of coal seam measurement |
| CN111119979A (en) * | 2019-12-08 | 2020-05-08 | 山西晋煤集团技术研究院有限责任公司 | Small-flow gas extraction drilling hole accurate measurement system |
-
2011
- 2011-04-11 CN CN2011201038760U patent/CN202057373U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806420A (en) * | 2016-05-17 | 2016-07-27 | 山东鼎安检测技术有限公司 | Device and method for measuring gas flow of drill hole of water-containing coal bed |
| CN106813721A (en) * | 2017-01-04 | 2017-06-09 | 煤炭科学技术研究院有限公司 | A kind of down-hole drilling gas-water separation formula gas exhaust quantity monitoring method |
| CN106813721B (en) * | 2017-01-04 | 2020-06-12 | 煤炭科学技术研究院有限公司 | Underground drilling gas-water separation type gas pumping and discharging amount monitoring method |
| CN107035408A (en) * | 2017-05-24 | 2017-08-11 | 西安科技大学 | Coal bed drilling Gas leak position and gas flow, the detection means and method of concentration |
| CN107524435A (en) * | 2017-10-09 | 2017-12-29 | 开滦(集团)有限责任公司技术中心 | Aqueous determination of coal seam gas pressure device and assay method |
| CN109781601A (en) * | 2018-12-28 | 2019-05-21 | 中国矿业大学(北京) | A kind of aqueous vapor separating and measuring device and application method for gas permeability of coal seam measurement |
| CN111119979A (en) * | 2019-12-08 | 2020-05-08 | 山西晋煤集团技术研究院有限责任公司 | Small-flow gas extraction drilling hole accurate measurement system |
| CN111119979B (en) * | 2019-12-08 | 2021-12-03 | 山西晋煤集团技术研究院有限责任公司 | Small-flow gas extraction drilling hole accurate measurement system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111130 Termination date: 20150411 |
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| EXPY | Termination of patent right or utility model |