CN204386572U - The device of a kind of damp and hot displacement in flooding and draining coal seam gas - Google Patents
The device of a kind of damp and hot displacement in flooding and draining coal seam gas Download PDFInfo
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- CN204386572U CN204386572U CN201420854998.7U CN201420854998U CN204386572U CN 204386572 U CN204386572 U CN 204386572U CN 201420854998 U CN201420854998 U CN 201420854998U CN 204386572 U CN204386572 U CN 204386572U
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Abstract
The utility model relates to the device of a kind of damp and hot displacement in flooding and draining coal seam gas, and device comprises high-low pressure water filling device, high pressure resistant explosion-proof heating device, gas pumping device; High-low pressure water filling device comprises water storage box, pump motor, flow meter, high-pressure hydraulic pump, high-pressure water pipe; High pressure resistant explosion-proof heating device comprises explosion-resistant enclosure, heating module, control circuit board, ceramic asbestos charges, snap joint; Gas pumping device comprises extraction supervisor, extraction flexible pipe, extraction arm.Whole device can realize height pressure injection high temperature water, superheated water displacement coal-bed gas, increase coal temperature and humidity, improve gas pumping efficiency, realize control coal and gas prominent and dust-proof integratedization, simple to operate, particularly to remain high at extraction a period of time after gas content for low air permeability coal seam or coal seam and be difficult to the situation of extraction, the object reducing extraction regional coal-seam gas bearing capacity, short time extinction fast can be realized.
Description
Technical field
The utility model relates to the device of a kind of damp and hot displacement in flooding and draining coal seam gas, be particularly useful for low air permeability coal seam or coal seam in the high situation of extraction a period of time after gas content, can realize fast reducing extraction regional coal-seam gas bearing capacity, in the short time, reaching extinction object.
Background technology
Coal and gas prominent is one of the most serious disaster in colliery, coal and gas prominent mainly due to the unexpected broken coal of geostatic stress, in gas can the result of unexpected release.Coal body genus polyporus structure fragility object, among the hole that gas molecule is present in coal with adsorbed state and free state and crack, facts have proved, along with coal body moisture content increases, the flexibility decrease of coal, plasticity strengthens, and gas diffusion initial speed △ P declines, when moisture content reaches more than 4%, coal seam just loses outburst hazard.Therefore, to carry out water filling be improve coal body survivability to projecting coal bed, reduces gas rate of release, eliminate the effective measures of coal and gas prominent.Water mainly contains the effect of five aspects to gas in coal seam: 1, displacement effect, coal has certain suction-operated to materials such as water, carbon dioxide, gas, nitrogen, but what adsorption capacity was the strongest is water, next is carbon dioxide, gas again, so water has displacement effect to gas, high temperature water accelerates desorption of mash gas, and displacement efficiency is improved more.2, water is to the dissolution of gas, and test proves, water under elevated pressure conditions, can dissolve part gas; 3, reduce gas rate of release, along with water temperature constantly coal seam diffusion towards periphery, coal temperature declines, and remaining gas pressure reduces, gas rate of release reduction etc.; 4, add coal body plasticity, improve the ability that coal body opposing destroys suddenly; 5, reduce coal dust to fly upward, because of the cementation of water after moistening coal body fragmentation, not easily fly upward in atmosphere, thus reach the object of depositing dust.
Coal and gas outburst prominent controlling regulation requires: " region outburst prevention measures preferential, local prevent outburst measure supplement ", and region measure no matter how, all be unable to do without and to drill enforcement gas pumping to coal seam.The projecting coal bed hard-pumped that substantially all belongs to puts coal seam, and the extraction radius of influence is little, and extraction efficiency is low.When coal-bed gas is extracted into a certain degree, both do not have in having holed gas or gas flow minimum time, part extraction borehole is carried out high pressure injection high temperature water, superheated water operation, due to the often rising 1 DEG C of temperature, coal-bed gas adsorption capacity just reduces by 8%, therefore, when the temperature increases, can in the gas molecule be adsorbed on coal body pore wall obtains, fast desorption, become free gas, under the effect of pressure reduction and seepage flow, accelerate the gas pumping of drainage holes near water injection hole.
Summary of the invention
The purpose of this utility model is on the basis of the anti-reflection measure of existing coal-bed flooding release, add a kind of high pressure resistant explosion-proof heating device, achieve different pressures and different temperatures displacement in flooding coal-bed gas, define the device of damp and hot displacement in flooding that manual pressure and water temp. auto-control be integrated and draining coal seam gas, Be very effective, practical.
For achieving the above object, the utility model provides the device of a kind of damp and hot displacement in flooding and draining coal seam gas, it is characterized in that: it comprises high-low pressure water filling device, high pressure resistant explosion-proof heating device, gas pumping device, described high-low pressure water filling device comprises water storage box, by the high-pressure hydraulic pump that high-pressure water pipe is connected with water storage box, drive the pump motor of high-pressure hydraulic pump, high-pressure hydraulic pump is provided with pressure-relief valve, described high pressure resistant explosion-proof heating device comprises and is arranged on mutual separated ceramic asbestos charges in explosion-resistant enclosure and control circuit board, heating module is arranged in described ceramic asbestos charges, described heating module is connected with high-pressure hydraulic pump water side by snap joint, the water inlet of heating module is provided with pulse signal flow meter, heating module is provided with thermometer, this pulse signal flow meter is connected with control circuit board with thermometer, control circuit board is connected with power supply by main power line, and the gear of heating module is controlled by control cables, gas pumping device comprises extraction supervisor, the extraction arm being connected at least two extraction flexible pipes on this extraction supervisor and stretching in mash gas pumping drilling, the water side of described heating module is connected with this extraction arm respectively with the extraction flexible pipe of described gas pumping device.
Preferably, described high-pressure water pipe is provided with physical streams gauge.
Preferably, described heating module comprising casting module metal-back, being arranged at least one the S type water pipe cast in module metal-back, for heating heater strip and the magnesia of casting module metal-back and water pipe.
Preferably, the junction of described explosion-resistant enclosure and the water inlet pipe of heating module, control cables, main power line is respectively equipped with silica gel sealing ring and screw seals.
Advantage of the present utility model and beneficial effect:
Owing to have employed technique scheme, the utility model can realize different pressures and different temperatures displacement in flooding coal-bed gas, whole device can reach real-time implementation height pressure injection high temperature water, (temperature is more than 100 DEG C for superheated water, under high pressure position aqueous water, enter in environment under low pressure and become steam) displacement coal-bed gas, increase coal temperature and humidity, improve gas pumping efficiency, realize control coal and gas prominent and dust-proof integratedization, simple to operate, particularly to remain high at extraction a period of time after gas content for low air permeability coal seam or coal seam and be difficult to the situation of extraction, can realize reducing extraction regional coal-seam gas bearing capacity fast, the object of short time extinction, significantly can reduce coal dust simultaneously, ensure workman's production safety.The device pressurization of damp and hot displacement in flooding and draining coal seam gas and water temp. auto-control are integrated, and can prevent heating module dry combustion method; After hot water enters coal body, not only can displacement coal-bed gas, release is anti-reflection coal body, and coal body can be made to heat up, accelerate desorb and the migration velocity of gas, change the effect of the moistening coal body of traditional water filling, define the colliery protrusion-dispelling technical measures that displacement in flooding-intensification coal body-quickening desorb and seepage flow are integrated.This device can effectively reduce gas bearing capacity in extraction borehole region, reach the object of extinction fast, is a technological innovation for Safety of Coal Mine Production, for control of coalmine gas technology from now on adds again a new behave.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model uses.
Fig. 2 is the structural representation of high pressure resistant explosion-proof heating device.
Fig. 3 is heating module internal construction schematic diagram.
In figure: high-low pressure water filling device-1, high pressure resistant explosion-proof heating device-2, gas pumping device-3, water storage box-4, high-pressure water pipe-5, physical streams gauge-6, pump motor-7, high-pressure hydraulic pump-8, extraction supervisor-9, extraction flexible pipe-10, extraction arm-11, gas-12, mash gas pumping drilling-13, heating module-14, explosion-resistant enclosure-15, pottery asbestos charges-16, control circuit board-17, pulse signal flow meter-18, snap joint-19, silica gel sealing ring-20, screw-21, pressure-relief valve-22, control cables-23, rock stratum-24, coal seam-25, main source line-26, heater strip-27, magnesia-28, casting module metal-back-29, water pipe-30.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model embodiment is further described:
As shown in Figure 1: the utility model provides the device of a kind of damp and hot displacement in flooding and draining coal seam gas, device comprises high-low pressure water filling device 1, high pressure resistant explosion-proof heating device 2, gas pumping device 3; High-low pressure water filling device 1 can realize height setting-out and freely switch, and can realize water injection pressure 0 ~ 20MPa, comprise water storage box 4, high-pressure water pipe 5, physical streams gauge 6, pump motor 7, high-pressure hydraulic pump 8; High pressure resistant explosion-proof heating device 2 comprises heating module 14, explosion-resistant enclosure 15, ceramic asbestos charges 16, control circuit board 17, pulse signal flow meter 18, snap joint 19, silica gel sealing ring 20, screw 21, pottery asbestos charges 16 can prevent explosion-resistant enclosure 15 in heating process from heating up, and can ensure that the temperature of heating water is not scattered and disappeared simultaneously.Water under high pressure is by snap joint 19, heated mould 14 pieces is entered through pulse signal flow meter 18, the temperature of water under high pressure is controlled by control circuit board 17, and prevent heating module 14 dry combustion method, can realize automatically stopping heating, control circuit board 17 controls the gear of heating module by control cables 23, realizes different heating power, reaches outlet temperature constant; Gas pumping device 3 comprises extraction supervisor 9, extraction flexible pipe 10, extraction arm 11, is flow in drainage device by mash gas pumping drilling 13 gas that pumping water into coal heating release produces.
Utility model works principle:
A, at least 3 borings or utilize existing 3 mash gas pumping drillings of constructing on rock stratum, through coal seam, connect extraction flexible pipe, high-pressure water pipe and extraction arm, and the good mash gas pumping drilling of shutoff, prepare gas pumping.
The water of b, water storage box is connected with high-pressure hydraulic pump by pressure duct, pressurize through high-pressure hydraulic pump, pressure-relief valve can the pressure of manual adjustments water, the water of release can be back to again in water storage box, water under high pressure enters into high pressure resistant explosion-proof heating device by pressure duct, is heated by heating module, and control circuit board can regulate heating water temperature, when entering heating module if anhydrous, can realize automatically stopping heating.
C, being connected with extraction arm by high-pressure water pipe through the water of heating module enters in boring, heating water makes coal temperature raise by heat trnasfer, accelerate desorb and the migration of gas in coal body, the gas being in adsorbed state is made to be rapidly converted into free gas, because the borehole temperature of hot-water flooding raises, cause gas pressure around relatively high, flow in neighbouring extraction borehole from high to low by pressure official post gas pressure, in addition the adsorption capacity of coal body to water is greater than the adsorption capacity to gas, so in the process injecting water, water can enter in the adsorption space of gas, thus replace the position at gas station, reach the object of displacement gas, and then the extraction amount of extraction borehole gas can be improved and reduce extraction region gas bearing capacity, accelerate extinction.
D, whole device after a drilling construction or stop hot-water flooding time, remove high-low pressure water filling device and high pressure resistant explosion-proof heating device, boring extraction flexible pipe and extraction supervisor and extraction arm heated in water filling and couples together.When heating other extraction borehole, repeat above step, whole process operation is simple, improves gas pumping successful.
Embodiment described in the utility model is only the description carried out preferred embodiment of the present utility model; not the utility model design and scope are limited; under the prerequisite not departing from the utility model design philosophy; the various modification that in this area, engineers and technicians make the technical solution of the utility model and improvement; protection domain of the present utility model all should be fallen into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (4)
1. a device for damp and hot displacement in flooding and draining coal seam gas, is characterized in that: it comprises high-low pressure water filling device (1), high pressure resistant explosion-proof heating device (2), gas pumping device (3),
The high-pressure hydraulic pump (8) that described high-low pressure water filling device (1) comprises water storage box (4), be connected with water storage box (4) by high-pressure water pipe (5), the pump motor (7) driving high-pressure hydraulic pump (8), high-pressure hydraulic pump (8) is provided with pressure-relief valve (22),
Described high pressure resistant explosion-proof heating device (2) comprises and is arranged on mutual separated ceramic asbestos charges (16) and control circuit board (17) in explosion-resistant enclosure (15), heating module (14) is arranged in described ceramic asbestos charges (16), described heating module (14) is connected with high-pressure hydraulic pump (8) water side by snap joint (19), the water inlet of heating module (14) is provided with pulse signal flow meter (18), heating module (14) is provided with thermometer, this pulse signal flow meter (18) is connected with control circuit board (17) with thermometer, control circuit board (17) is connected with power supply by main power line (26), and the gear of heating module (14) is controlled by control cables (23),
The extraction arm (11) that gas pumping device (3) comprises extraction supervisor (9), is connected at least two extraction flexible pipes (10) in this extraction supervisor (9) and stretches in mash gas pumping drilling (13), the water side of described heating module (14) is connected with this extraction arm (11) respectively with the extraction flexible pipe (10) of described gas pumping device (3).
2. the device of damp and hot displacement in flooding according to claim 1 and draining coal seam gas, is characterized in that: described high-pressure water pipe (5) is provided with physical streams gauge (6).
3. the device of damp and hot displacement in flooding according to claim 1 and draining coal seam gas, is characterized in that: described heating module (14) comprising the casting module metal-back (29) be arranged in ceramic asbestos charges (16), being arranged at least one the S type water pipe (30) cast in module metal-back (29), for heating heater strip (27) and the magnesia (28) of casting module metal-back (29) and water pipe (30).
4. the device of damp and hot displacement in flooding according to claim 1 and draining coal seam gas, is characterized in that: the junction of the water inlet pipe of described explosion-resistant enclosure (15) and heating module (14), control cables (23), main power line (26) is respectively equipped with silica gel sealing ring (20) and screw (21) seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854998.7U CN204386572U (en) | 2014-12-30 | 2014-12-30 | The device of a kind of damp and hot displacement in flooding and draining coal seam gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420854998.7U CN204386572U (en) | 2014-12-30 | 2014-12-30 | The device of a kind of damp and hot displacement in flooding and draining coal seam gas |
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| Publication Number | Publication Date |
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| CN204386572U true CN204386572U (en) | 2015-06-10 |
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| CN201420854998.7U Expired - Fee Related CN204386572U (en) | 2014-12-30 | 2014-12-30 | The device of a kind of damp and hot displacement in flooding and draining coal seam gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500010A (en) * | 2014-12-30 | 2015-04-08 | 湖南省煤炭科学研究院 | Device and method for displacing, exhausting and mining coal seam gas by damp and hot water injection |
| CN105507939A (en) * | 2015-12-29 | 2016-04-20 | 中国矿业大学 | Grouting displacement type borehole curing sealing and pipeless gas extraction method |
| CN106121604A (en) * | 2016-06-27 | 2016-11-16 | 中国矿业大学 | One utilizes CO2coal-bed gas and the method for residual gas is driven away with modified water |
| CN109538198A (en) * | 2018-11-12 | 2019-03-29 | 辽宁大学 | Prevent and treat soaked disaster gas injection in coal seam and the integrated experimental provision of punching and application |
-
2014
- 2014-12-30 CN CN201420854998.7U patent/CN204386572U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500010A (en) * | 2014-12-30 | 2015-04-08 | 湖南省煤炭科学研究院 | Device and method for displacing, exhausting and mining coal seam gas by damp and hot water injection |
| CN105507939A (en) * | 2015-12-29 | 2016-04-20 | 中国矿业大学 | Grouting displacement type borehole curing sealing and pipeless gas extraction method |
| CN105507939B (en) * | 2015-12-29 | 2017-07-07 | 中国矿业大学 | A kind of slip casting displaced type drilling solidification sealing and method of the gas without pipe extraction |
| CN106121604A (en) * | 2016-06-27 | 2016-11-16 | 中国矿业大学 | One utilizes CO2coal-bed gas and the method for residual gas is driven away with modified water |
| CN106121604B (en) * | 2016-06-27 | 2018-08-17 | 中国矿业大学 | It is a kind of to utilize CO2Drive away the method for coal-bed gas and residual gas with modified water |
| CN109538198A (en) * | 2018-11-12 | 2019-03-29 | 辽宁大学 | Prevent and treat soaked disaster gas injection in coal seam and the integrated experimental provision of punching and application |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20161230 |