CN203847075U - Underground direct-drive coal-bed gas drainage device - Google Patents
Underground direct-drive coal-bed gas drainage device Download PDFInfo
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- CN203847075U CN203847075U CN201420161406.3U CN201420161406U CN203847075U CN 203847075 U CN203847075 U CN 203847075U CN 201420161406 U CN201420161406 U CN 201420161406U CN 203847075 U CN203847075 U CN 203847075U
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Abstract
The utility model provides an underground direct-drive coal-bed gas drainage device and belongs to the mining technical field. The underground direct-drive coal-bed gas drainage device comprises a sleeve pipe, a motor, a motor protector, a centering bearing assembly, a screw pump, a special connector, a special axial force bearing mechanism and an oil pipe; the motor is arranged at the bottom of a shaft; a motor output shaft is connected with a rotor input end of the screw pump through the motor protector and the centering bearing assembly; a rotor output end of the screw pump is connected with the special axial force bearing mechanism; the special connector is formed by an inner shaft and a housing; a stator of the screw pump is connected with the special axial force bearing mechanism through the special connector; the oil pipe is connected between a special wellhead and the special axial force bearing mechanism; the sleeve pipe is embedded in the inner wall of the shaft; the components are arranged inside the sleeve pipe in a sleeving mode. According to the underground direct-drive coal-bed gas drainage device, the blank of a domestic coal-bed gas highly-deviated well and horizontal well drainage technology is filled and the gas production is multiplied and meanwhile the occupied ground area of the drainage device is reduced in comparison with a ground drainage mode.
Description
Technical field
The utility model relates to a kind of coal bed gas extraction equipment, and the special mining equipment of coal bed gas is directly driven in especially a kind of down-hole, belongs to mining technique field.
Background technology
Coal bed gas (being commonly called as gas), a kind of novel clean energy, it be a kind of and coal association and with adsorbed state from being conigenous the unconventional natural gas being stored in coal seam.The present stage exploitation of coal bed gas is generally followed the collection mechanism of " draining-step-down-gas production " and is carried out, namely by plant equipment, the water in coal seam is discharged to reduce down-hole pressure, make the coal bed gas that is adsorbed on matrix of coal internal pore surface be desorbed out, and by spreading and the two kinds of different modes that flow migrate to pit shaft, so not only make this clear energy sources of coal bed gas be utilized, and in the time of later stage coal mining operation, can greatly reduce gas explosion accident odds.
The at present domestic coal bed gas extraction equipment generally adopting is that oil pumper and ground drive oil-extracting screw pump, and the two all belongs to ground and drives mining equipment, is generally used for straight well and little Wells (hole deviation < 50o) the mining mode of production; For high angle hole (hole deviation > 50o) production scheme, traditional oil pumper and ground driving screw pump ubiquity R a T serious wear problem, within a short period of time, sucker rod will rub, and the rate that breaks down is high; And for multi-branched horizontal well production scheme, traditional oil pumper and ground driving screw pump are completely helpless.
Utility model content
The purpose of this utility model is the drawback for prior art, and coal bed gas extraction equipment is directly driven in the down-hole that provide a kind of problem that can solve traditional oil pumper and the wearing and tearing of ground driving screw pump rod tube and the large mining difficulty of hole deviation degree, is applicable to multi-branched horizontal well and high angle hole production scheme.
Problem described in the utility model realizes with following technical proposals:
Coal bed gas extraction equipment is directly driven in a kind of down-hole, it has coordinated the mining operation of coal bed gas with ground control system and Special wellhead, it comprises sleeve pipe, motor, motor protecter, alignment bearing assembly, screw pump, special connector, special axial force load carrier and oil pipe, described motor arrangement is in wellbore bottom, motor is connected with ground control system by cable, motor output shaft passes through motor protecter, alignment bearing assembly is connected with screw pump rotor input, described screw pump rotor output is connected with special axial force load carrier, described special connector is made up of interior axle and shell, it couples together screw pump stator and special axial force load carrier, described oil pipe is connected between Special wellhead and special axial force load carrier, described sleeve pipe is inlaid on shaft in wall, motor, motor protecter, alignment bearing assembly, screw pump, special connector, special axial force load carrier and oil pipe are all sleeved on the inside of sleeve pipe.
Coal bed gas extraction equipment is directly driven in above-mentioned down-hole, described special axial force load carrier comprises special axial force load carrier housing, load-bearing bearing assembly, Hollow Transmission Shafts and special axial force load carrier mechanical seal unit, described special axial force load carrier housing one end is connected with oil pipe, the other end is connected with the shell of special connector, described Hollow Transmission Shafts is arranged in special axial force load carrier enclosure interior, it is connected with screw pump rotor output, load-bearing bearing assembly and special axial force load carrier mechanical seal unit are set between special axial force load carrier housing and Hollow Transmission Shafts.
Coal bed gas extraction equipment is directly driven in above-mentioned down-hole, described alignment bearing assembly comprises spline housing, alignment bearing assembly mechanical seal unit, alignment bearing, alignment bearing assembly housing, power transmission shaft and Connection Block, described alignment bearing assembly housing one end is connected with the feed tube of screw pump, the other end is connected with motor protecter by Connection Block, described power transmission shaft is arranged in alignment bearing assembly housing inside, the spline housing assembling with screw pump rotor input is set at its output, its input is connected with motor output shaft by motor protecter, alignment bearing and alignment bearing assembly mechanical seal unit are set between alignment bearing assembly housing and power transmission shaft.
Coal bed gas extraction equipment is directly driven in above-mentioned down-hole, and described screw pump is left-handed screw pump configuration.
Coal bed gas extraction equipment is directly driven in above-mentioned down-hole, and described motor is low-speed high-torque motor.
The utility model is that a kind of straight drive row in the special down-hole of coal bed gas that is applicable to multi-branched horizontal well and high angle hole production scheme is adopted equipment, it is by being arranged in the motor drive screw pump running of wellbore bottom, and be provided with special axial force load carrier at screw pump output, bear by load-bearing bearing assembly the axial tension that screw pump rotor transmits, and by special axial force load carrier housing, special connector, axial tension is passed to the stator of screw pump, the damage of therefore having avoided axial force that screw pump is huge to cause motor; The utility model is provided with alignment bearing assembly between motor protecter and screw pump, in order to the moment of torsion of motor is delivered on screw pump, therefore solved the eccentricity issues of screw pump rotor in operation process, ensured that motor power can be delivered on screw pump rotor reposefully; The utility model adopts left-handed screw pump configuration, it coordinates with dextrorotation oil pipe, effectively avoid the generation of traditional right handed screw pump rotor oil pipe dropout phenomenon in operation process, anchor so just need be set on screw pump stator, reduce amount of parts, reduced equipment purchase and maintenance cost; The utility model adopts low-speed high-torque motor as power source, has excellent low-speed big characteristic, can solve well the problem of difficulty in starting after screw pump termination of pumping.In a word, the utility model has been filled up the domestic blank at coal bed gas high angle hole and multi-branched horizontal well mining technical elements, has obtained good effect, through scene use compared with the production scheme of ground, realize being multiplied of gas production, and reduced the ground area occupied of mining equipment.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the utility model rough package drawing;
Fig. 2 is special axial force load carrier structural representation;
Fig. 3 is special axial force load carrier, special connector, screw pump assembly relation schematic diagram;
Fig. 4 is alignment bearing modular construction schematic diagram;
Fig. 5 is screw pump, alignment bearing assembly, motor protecter and motor assembly relation schematic diagram;
Fig. 6 is drainage line schematic diagram of the present utility model.
In figure, each list of reference numerals is: 1, motor, 2, sleeve pipe, 3, motor protecter, 4, alignment bearing assembly, 4-1, spline housing, 4-2, alignment bearing assembly mechanical seal unit, 4-3, alignment bearing, 4-4, alignment bearing assembly housing, 4-5, power transmission shaft, 4-6, Connection Block, 5, screw pump, 5-1, rotor, 5-2, stator, 5-3, feed tube, 6, special connector, 6-1, interior axle, 6-2, shell, 7, special axial force load carrier, 7-1, special axial force load carrier housing, 7-2, load-bearing bearing assembly, 7-3, Hollow Transmission Shafts, 7-4, special axial force load carrier mechanical seal unit, 8, oil pipe, 9, Special wellhead, 10, cable, 11, ground control system.
Detailed description of the invention
Referring to Fig. 1, Fig. 3, the utility model has coordinated the mining operation of coal bed gas with ground control system 11 and Special wellhead 9, and it comprises sleeve pipe 2, motor 1, motor protecter 3, alignment bearing assembly 4, screw pump 5, special connector 6, special axial force load carrier 7 and oil pipe 8, described motor 1 is arranged in wellbore bottom, and motor 1 is connected with ground control system 11 by cable 10, and motor output shaft is by motor protecter 3, alignment bearing assembly 4 is connected with the rotor 5-1 input of screw pump 5, the output of described rotor 5-1 is connected with special axial force load carrier 7, described special connector 6 is made up of interior axle 6-1 and shell 6-2, it couples together the stator 5-2 of screw pump and special axial force load carrier 7, described oil pipe 8 is connected between Special wellhead 9 and special axial force load carrier 7, described sleeve pipe 2 is inlaid on shaft in wall, motor 1, motor protecter 3, alignment bearing assembly 4, screw pump 5, special connector 6, special axial force load carrier 7 and oil pipe 8 are all sleeved on the inside of sleeve pipe 2.
Referring to Fig. 1, Fig. 2, Fig. 3, special axial force load carrier 7 of the present utility model comprises special axial force load carrier housing 7-1, load-bearing bearing assembly 7-2, Hollow Transmission Shafts 7-3 and special axial force load carrier mechanical seal unit 7-4, described special axial force load carrier housing 7-1 one end is connected with oil pipe 8, the other end is connected with the shell 6-2 of special connector 6, described Hollow Transmission Shafts 7-3 is arranged in special axial force load carrier housing 7-1 inside, it is connected with the rotor 5-1 output of screw pump, load-bearing bearing assembly 7-2 and special axial force load carrier mechanical seal unit 7-4 are set between special axial force load carrier housing 7-1 and Hollow Transmission Shafts 7-3.
Referring to Fig. 1, Fig. 4, Fig. 5, alignment bearing assembly 4 of the present utility model comprises spline housing 4-1, alignment bearing assembly mechanical seal unit 4-2, alignment bearing 4-3, alignment bearing assembly housing 4-4, power transmission shaft 4-5 and Connection Block 4-6, described alignment bearing assembly housing 4-4 one end is connected with the feed tube 5-3 of screw pump 5, the other end is connected with motor protecter 3 by Connection Block 4-6, described power transmission shaft 4-5 is arranged in alignment bearing assembly housing 4-4 inside, the spline housing 4-1 assembling with screw pump rotor 5-1 input is set at its output, its input is connected with motor 1 output shaft by motor protecter 3, alignment bearing 4-3 and alignment bearing assembly mechanical seal unit 4-2 are set between alignment bearing assembly housing 4-4 and power transmission shaft 4-5.
Referring to Fig. 1～Fig. 5, shown in figure, be the specific embodiment of the utility model under multi-branched horizontal well production scheme, it turns round by the motor 1 drive screw pump 5 that is arranged in wellbore bottom, and be provided with special axial force load carrier 7 at the rotor 5-1 of screw pump output, bear by load-bearing bearing assembly 7-2 the axial tension F that screw pump rotor 5-1 transmits, and by special axial force load carrier housing 7-1, the shell 6-2 of special connector 6 passes to axial tension F the stator 5-2 of screw pump, therefore the damage of having avoided axial force that screw pump rotor 5-1 is huge to cause motor 1, the utility model is provided with alignment bearing assembly 4 between motor protecter 3 and screw pump 5, in order to the moment of torsion of motor 1 is delivered on screw pump 5, therefore solved the eccentricity issues of screw pump rotor 5-1 in operation process, ensured that motor power can be delivered on screw pump rotor 5-1 reposefully, the utility model adopts left-handed screw pump configuration, it coordinates with the oil pipe 8 being connected by right-handed thread structure, effectively avoid the generation of traditional right handed screw pump oil pipe 8 dropout phenomenons in operation process, so just need on screw pump stator 5-2, anchor be set, avoided because of coal dust deposition, anchor stop up cause remove pump difficult problem, both reduce amount of parts, reduced again equipment purchase and maintenance cost, the utility model adopts low-speed high-torque motor as power source, preferably electric moter voltage is 380V, running speed is 20-200r/min, motor external diameter 102mm, it can meet opens smoothly the requirement of lower pump group in multi-branched horizontal well 5 1/2 sleeve pipes, there is again excellent low-speed big characteristic, can solve well the problem of difficulty in starting after screw pump 5 terminations of pumping.
Referring to Fig. 1, Fig. 5, Fig. 6; the course of work of the present utility model is: motor 1 running under ground control system 11 is controlled; its output shaft drives the rotor 5-1 of screw pump 5 to rotate in stator 5-2 inner chamber by motor protecter, alignment bearing assembly 4; the water that is entered into screw pump 5 by screw pump feed tube 5-3 is pushed to special axial force load carrier 7; then current are entered in oil pipe 8 by Hollow Transmission Shafts 7-3 inner chamber, then are pumped on ground through Special wellhead 9 by oil pipe 8.
Claims (5)
1. coal bed gas extraction equipment is directly driven in a down-hole, it has coordinated the mining operation of coal bed gas with ground control system (11) and Special wellhead (9), it is characterized in that, it comprises sleeve pipe (2), motor (1), motor protecter (3), alignment bearing assembly (4), screw pump (5), special connector (6), special axial force load carrier (7) and oil pipe (8), described motor (1) is arranged in wellbore bottom, motor (1) is connected with ground control system (11) by cable (10), motor output shaft is by motor protecter (3), alignment bearing assembly (4) is connected with rotor (5-1) input of screw pump (5), the output of described rotor (5-1) is connected with special axial force load carrier (7), described special connector (6) is made up of interior axle (6-1) and shell (6-2), it couples together the stator of screw pump (5-2) and special axial force load carrier (7), described oil pipe (8) is connected between Special wellhead (9) and special axial force load carrier (7), described sleeve pipe (2) is inlaid on shaft in wall, motor (1), motor protecter (3), alignment bearing assembly (4), screw pump (5), special connector (6), special axial force load carrier (7) and oil pipe (8) are all sleeved on the inside of sleeve pipe (2).
2. coal bed gas extraction equipment is directly driven in a kind of down-hole according to claim 1, it is characterized in that, described special axial force load carrier (7) comprises special axial force load carrier housing (7-1), load-bearing bearing assembly (7-2), Hollow Transmission Shafts (7-3) and special axial force load carrier mechanical seal unit (7-4), described special axial force load carrier housing (7-1) one end is connected with oil pipe (8), the other end is connected with the shell (6-2) of special connector (6), described Hollow Transmission Shafts (7-3) is arranged in special axial force load carrier housing (7-1) inside, it is connected with rotor (5-1) output of screw pump, load-bearing bearing assembly (7-2) and special axial force load carrier mechanical seal unit (7-4) are set between special axial force load carrier housing (7-1) and Hollow Transmission Shafts (7-3).
3. coal bed gas extraction equipment is directly driven in a kind of down-hole according to claim 2, it is characterized in that, described alignment bearing assembly (4) comprises spline housing (4-1), alignment bearing assembly mechanical seal unit (4-2), alignment bearing (4-3), alignment bearing assembly housing (4-4), power transmission shaft (4-5) and Connection Block (4-6), described alignment bearing assembly housing (4-4) one end is connected with the feed tube (5-3) of screw pump (5), the other end is connected with motor protecter (3) by Connection Block (4-6), described power transmission shaft (4-5) is arranged in alignment bearing assembly housing (4-4) inside, the spline housing (4-1) assembling with screw pump rotor (5-1) input is set at its output, its input is connected with motor (1) output shaft by motor protecter (3), alignment bearing (4-3) and alignment bearing assembly mechanical seal unit (4-2) are set between alignment bearing assembly housing (4-4) and power transmission shaft (4-5).
4. coal bed gas extraction equipment is directly driven in a kind of down-hole according to claim 3, it is characterized in that, described screw pump (5) is left-handed screw pump configuration.
5. coal bed gas extraction equipment is directly driven in a kind of down-hole according to claim 3, it is characterized in that, described motor (1) is low-speed high-torque motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161406.3U CN203847075U (en) | 2014-04-04 | 2014-04-04 | Underground direct-drive coal-bed gas drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161406.3U CN203847075U (en) | 2014-04-04 | 2014-04-04 | Underground direct-drive coal-bed gas drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847075U true CN203847075U (en) | 2014-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420161406.3U Expired - Fee Related CN203847075U (en) | 2014-04-04 | 2014-04-04 | Underground direct-drive coal-bed gas drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953315A (en) * | 2014-04-04 | 2014-07-30 | 唐山玉联机电有限公司 | Special underground direct-driven discharging and extracting equipment for coal bed gas |
-
2014
- 2014-04-04 CN CN201420161406.3U patent/CN203847075U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953315A (en) * | 2014-04-04 | 2014-07-30 | 唐山玉联机电有限公司 | Special underground direct-driven discharging and extracting equipment for coal bed gas |
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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: 20140924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |