CN207229083U - A kind of device of underground heat injection transformation coal seam physical characteristic - Google Patents
A kind of device of underground heat injection transformation coal seam physical characteristic Download PDFInfo
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- CN207229083U CN207229083U CN201721282389.9U CN201721282389U CN207229083U CN 207229083 U CN207229083 U CN 207229083U CN 201721282389 U CN201721282389 U CN 201721282389U CN 207229083 U CN207229083 U CN 207229083U
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Abstract
A kind of device of underground heat injection transformation coal seam physical characteristic, is related to coal mining technology, solves that the technical problem of bump or coal and gas prominent easily occurs during coal roadway tunneling.The utility model forms coal seam heating system by colliery neutrality Water warfare demineralizer, high-pressure hydraulic pump, electric heater, heat injection pipeline, heat injection drilling, water is after purification demineralizer processing, electric heater is injected by high-pressure hydraulic pump, water is heated by electric heater in a high voltage state, produce the hole sealing tube that superheated water drills along heat injection pipeline and heat injection and inject coal seam, water reduces after entering coal seam with pressure, it is partially converted into vapor, superheated water and vapor along coal seam fracture seepage flow and heat coal seam, water after release heat is imported into extraction borehole, discharges coal seam.Coal seam can change the physical characteristics such as the self-ignition point of the adsorptivity of coal, intensity and coal in a short time through heating after a while, effectively prevent that bump or coal and gas prominent occurs during coal roadway tunneling.
Description
Technical field
Coal mining technology is the utility model is related to, more particularly to one changes the dress of coal seam physical characteristic by mode of heating
Put.
Background technology
Temperature can have an impact many physical characteristics of coal, for example, heating coal seam can reduce various degrees of metamorphism
Coal can remove the moisture in coal after heating, change the ignition point (temperature value) of lignite to the adsorptivity of gas, lignite,
Heating coal seam can strengthen the plastic deformation ability of coal, reduce the tendentiousness of coal and gas prominent.Using heating coal seam to coal
Physical characteristic be modified be corresponding problem in a kind of intensive, quick processing colliery the best approach.But due to underground coal mine
Special safety requirements, and containing the methane gas for being easy to explosion in the idle air in colliery, so coal production and scientific research
In there is no by mode of heating change coal seam physical characteristic technique and relevant device technology.With the increasing of coal mining depth
Add, some conventional methods can not meet the needs of Safety of Coal Mine Production, a kind of anxious device in underground heating coal seam to be developed
And method, realize the demand changed rapidly to the physical characteristic of coal.
The content of the invention
The purpose of this utility model is that it there is no for the prior art by coal mine underground coal bed heating, changing in the short time
Become the technology of coal seam physical characteristic, there is provided a kind of device of underground heat injection transformation coal seam physical characteristic, solves easy during coal roadway tunneling
The technical problem of bump or coal and gas prominent occurs.
The utility model is achieved through the following technical solutions：
A kind of device of underground heat injection transformation coal seam physical characteristic, including：Colliery neutrality Water warfare-demineralizer, high pressure water
Pump, electric heater, hole sealing tube, the colliery neutrality Water warfare-demineralizer are connected by pipeline with the high-pressure hydraulic pump, the height
Water pump is connected by pressure duct with the electric heater, and the electric heater is connected by heat injection pipeline and the hole sealing tube
Connect, the hole sealing tube is arranged in the heat injection drilling in coal seam.
Further, it is 50 ± 5MPa that the electric heater, which bears pressure, the vapor or overheat of the electric heater output
Coolant-temperature gage is 150~300 DEG C.
Further, the high-pressure hydraulic pump, electric heater, rated pressure of the heat injection pipeline under 300 DEG C of hot conditions are
30MPa。
Further, the electric heater by heat injection pipeline to the hole sealing tube water injection pressure and water injection rate, according to coal seam
Buried depth determines that the relationship between them is：
Q=P × [Exp (- H) × L] × log (L/D)/A,
Wherein：Q is the water injection rate of unit time, and P is superheated water or steam pressure, and H is coal seam buried depth, and A is coefficient, and L is
The open-hole length or screen casing length of drilling, D are the diameter of drilling.
Further, the high-pressure hydraulic pump is mining plunger pump.
Further, the heat injection pipeline is high pressure resistant, high temperature pipeline.
The utility model compared with prior art, has the following advantages and beneficial effect：
The utility model is drilled by colliery neutrality Water warfare-demineralizer, high-pressure hydraulic pump, electric heater, heat injection pipeline, heat injection
Coal seam heating system is formed, water is injected into electric heater after colliery neutrality Water warfare-demineralizer processing by high-pressure hydraulic pump,
Water is heated by the electric heater of high temperature and pressure in a high voltage state, produces the superheated water of high temperature along heat injection pipeline and heat injection
The hole sealing tube of drilling is injected into coal seam, and water reduces after entering coal seam with pressure, is partially converted into vapor, superheated water and vapor
Along coal seam fracture seepage flow and coal seam is heated, the water after heat is discharged and is imported into the extraction borehole in coal seam, discharge coal seam.Coal
It is special can to change the physics such as the self-ignition point of the adsorptivity of coal, intensity and coal in a short time through heating after a while for layer
Property, effectively prevent that bump or coal and gas prominent occurs during coal roadway tunneling.
The utility model is used for coal mining, is a kind of underground heating coal seam that can be used directly, have operability
Device, can change the physics and mechanical characteristic of coal in a short time, realize the demand of Safety of Coal Mine Production.
Brief description of the drawings
Fig. 1 is a kind of apparatus structure schematic diagram of underground heat injection transformation coal seam physical characteristic.
Wherein：
1-colliery neutrality Water warfare-water demineralizer, 2-high-pressure hydraulic pump, 3-electric heater, 4-hole sealing tube, 5-pipeline,
6-pressure duct, 7-heat injection pipeline, 8-heat injection drilling, 9-coal seam.
Embodiment
Clear, complete description is carried out to the technical solution of the utility model below in conjunction with drawings and examples.
As shown in Figure 1, a kind of device of underground heat injection transformation coal seam physical characteristic, including：Colliery neutrality Water warfare-softening
Device 1, high-pressure hydraulic pump 2, electric heater 3, hole sealing tube 4, the colliery neutrality Water warfare-demineralizer 1 pass through pipeline 5 and the high pressure
Water pump 2 connects, and the high-pressure hydraulic pump 2 is connected by pressure duct 6 with the electric heater 3, and the electric heater 3 passes through heat injection
Pipeline 7 is connected with the hole sealing tube 4, and the hole sealing tube 4 is arranged in the heat injection drilling 8 in coal seam 9.
It is 50 ± 5MPa that the electric heater 3, which bears pressure, the vapor or overheat coolant-temperature gage that the electric heater 3 exports
For 150~300 DEG C.
The high-pressure hydraulic pump 2, electric heater 3, the rated pressure under 300 DEG C of hot conditions of heat injection pipeline 7 are
30MPa。
The electric heater 3 by heat injection pipeline 7 to 4 water injection pressure of hole sealing tube and water injection rate, according to coal seam buried depth
Determine, the relationship between them is：
Q=P × [Exp (- H) × L] × log (L/D)/A,
Wherein：Q is the water injection rate of unit time, and P is superheated water or steam pressure, and H is coal seam buried depth, and A is coefficient, and L is
The open-hole length or screen casing length of drilling, D are the diameter of drilling.
The high-pressure hydraulic pump 2 is mining plunger pump.
The heat injection pipeline 7 is high pressure resistant, high temperature pipeline.
It is as follows using a kind of method of underground heat injection transformation coal seam physical characteristic of the utility model, its step：
1. position more spacious, is sequentially arranged along wall (side) in coal road：Colliery neutrality Water warfare-demineralizer 1,
High-pressure hydraulic pump 2, electric heater 3, in the driving surface construction heat injection drilling 8 of coal road (tunneling the tunnel in coal seam), are bored in heat injection
Hole sealing tube 4 is set in hole 8；
2. colliery neutrality Water warfare-demineralizer 1 is connected with high-pressure hydraulic pump 2 using pipeline 5, using pressure duct 6 by height
Water pump 2 is connected with electric heater 3, is connected electric heater 3 with hole sealing tube 4 using the heat injection pipeline 7 of high pressure resistant high temperature；
3. starting high-pressure hydraulic pump 2, the water injection rate under different pressures is tested, according to formula：Q=P × [Exp (- H) × L] ×
Log (L/D)/A, determines the relation between water injection rate and water injection pressure；
4. water is filled electric heater 3, hole sealing tube 4 using high-pressure hydraulic pump 2, and maintain 1MPa low-pressure states；
5. starting electric heater 3, the superheated water of high temperature and pressure is produced, the pressure of superheated water is in 5~30MPa scopes, temperature
At 150~300 DEG C, high-pressure hydraulic pump is controlled, reaches constant pressure work；
6. when 8 is small, sampled from coal seam 9, carry out mechanical strength detection, stop heat injection when reaching requirement.
Coal seam heating system can change the physico mechanical characteristic of coal, and do not make coal that pyrolysis occur and go bad, and temperature range is 150
Between~300 DEG C.
The utility model can solve the problems in colliery, such as：Coal seam is modified, strengthens coal bed gas extraction, prevents
Coal Outburst etc., the physical parameter of measure are varied from as requested, can be become the time required to the temperature of heat injection and heat injection
Change.Therefore, the utility model can be embodied without departing from the scope of the utility model in a variety of forms, it will be appreciated that on
State embodiment and be not limited to foregoing details, and should widely be explained in claim limited range.It should be pointed out that for
For those skilled in the art, on the premise of not departing from the utility model structure, the improvement and change made
The protection that should be regarded as the utility model is enclosed.
Claims (6)
- A kind of 1. device of underground heat injection transformation coal seam physical characteristic, it is characterised in that：Coal seam physics is transformed in the underground heat injection The device of characteristic includes：Colliery neutrality Water warfare-demineralizer (1), high-pressure hydraulic pump (2), electric heater (3), hole sealing tube (4), institute State colliery neutrality Water warfare-demineralizer (1) to be connected with the high-pressure hydraulic pump (2) by pipeline (5), the high-pressure hydraulic pump (2) is logical Cross pressure duct (6) to be connected with the electric heater (3), the electric heater (3) passes through heat injection pipeline (7) and the hole sealing tube (4) connect, the hole sealing tube (4) is arranged in the heat injection drilling (8) in coal seam (9).
- 2. the device of underground heat injection transformation coal seam physical characteristic according to claim 1, it is characterised in that：The electrical heating It is 50 ± 5MPa that device (3), which bears pressure, and the vapor or overheat coolant-temperature gage of electric heater (3) output are 150~300 DEG C.
- 3. the device of underground heat injection transformation coal seam physical characteristic according to claim 1, it is characterised in that：The high pressure water Pump (2), electric heater (3), rated pressure of the heat injection pipeline (7) under 300 DEG C of hot conditions is 30MPa.
- 4. the device of underground heat injection transformation coal seam physical characteristic according to claim 1, it is characterised in that：The electrical heating Device (3) to the hole sealing tube (4) water injection pressure and water injection rate, determined by heat injection pipeline (7) according to coal seam buried depth, between them Relationship be：Q=P × [Exp (- H) × L] × log (L/D)/A,Wherein：Q is the water injection rate of unit time, and P is superheated water or steam pressure, and H is coal seam buried depth, and A is coefficient, and L is drilling Open-hole length or screen casing length, D be drilling diameter.
- 5. the device of underground heat injection transformation coal seam physical characteristic according to claim 1, it is characterised in that：The high pressure water It is mining plunger pump to pump (2).
- 6. the device of underground heat injection transformation coal seam physical characteristic according to claim 1, it is characterised in that：The heat injection pipe Road (7) is high pressure resistant, high temperature pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721282389.9U CN207229083U (en) | 2017-09-30 | 2017-09-30 | A kind of device of underground heat injection transformation coal seam physical characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721282389.9U CN207229083U (en) | 2017-09-30 | 2017-09-30 | A kind of device of underground heat injection transformation coal seam physical characteristic |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701157A (en) * | 2017-09-30 | 2018-02-16 | 太原理工大学 | A kind of device and method of underground heat injection transformation coal seam physical characteristic |
| CN109630081A (en) * | 2018-12-07 | 2019-04-16 | 中国矿业大学 | A kind of coal bed drilling note high pressure-temperature vapor strengthens coal bed gas drainage device and method |
| CN112012697A (en) * | 2020-08-04 | 2020-12-01 | 太原理工大学 | Novel coal seam centrifugal vibration yield increasing system |
| CN113389522A (en) * | 2021-06-11 | 2021-09-14 | 华能煤炭技术研究有限公司 | Controllable shock wave anti-reflection and heat injection combined gas extraction method and equipment |
| CN114562233A (en) * | 2022-03-11 | 2022-05-31 | 重庆大学 | Coal bed gas mining drilling method based on interaction of superheated liquid flash boiling porous jet plumes |
-
2017
- 2017-09-30 CN CN201721282389.9U patent/CN207229083U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701157A (en) * | 2017-09-30 | 2018-02-16 | 太原理工大学 | A kind of device and method of underground heat injection transformation coal seam physical characteristic |
| CN109630081A (en) * | 2018-12-07 | 2019-04-16 | 中国矿业大学 | A kind of coal bed drilling note high pressure-temperature vapor strengthens coal bed gas drainage device and method |
| CN112012697A (en) * | 2020-08-04 | 2020-12-01 | 太原理工大学 | Novel coal seam centrifugal vibration yield increasing system |
| CN112012697B (en) * | 2020-08-04 | 2022-04-19 | 太原理工大学 | Novel coal seam centrifugal vibration yield increasing system |
| CN113389522A (en) * | 2021-06-11 | 2021-09-14 | 华能煤炭技术研究有限公司 | Controllable shock wave anti-reflection and heat injection combined gas extraction method and equipment |
| CN114562233A (en) * | 2022-03-11 | 2022-05-31 | 重庆大学 | Coal bed gas mining drilling method based on interaction of superheated liquid flash boiling porous jet plumes |
| CN114562233B (en) * | 2022-03-11 | 2023-12-12 | 重庆大学 | Coal bed gas exploitation drilling method by interaction of superheated liquid flash porous injection plumes |
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