CN205243476U - Novel coal bed gas discharging and extracting device - Google Patents

Abstract

The utility model discloses a novel coal bed gas discharging and extracting device relates to drilling equipment technical field, including base, power device, drive mechanism, switch board, separator, compressor arrangement, condensing equipment, oil pipe and taking water atomizing device, power device passes through drive mechanism drive compressor arrangement, utilizes compressor arrangement to aspirate into oil pipe with coal seam air water mixture from taking water atomizing device, reentrant separator, and the coal bed gas of isolating gets into drive mechanism 6 after getting into compressor arrangement compression, condensing equipment cooling in proper order, and water and the impurity isolated are discharged through the drain, taking water atomizing device and including the person in charge, blade and water pipe, the water pipe upper end is passed through the spaced blade and is responsible for the lower extreme inner wall continuously, and under the suction force effect, the coal bed gas gas mixture passes through the main part and gets into oil pipe with the water pipe clearance, and groundwater is the little drop of water by the updraft atomizing on the water pipe, carry the coal seam gas well outside along with the air current, utilizes the utility model discloses not only practice thrift the maintenance cost but also improve the gas well recovery ratio.

Description

A kind of novel coal bed gas extraction equipment

Technical field

The utility model relates to drilling-production equipment technical field, especially a kind of novel coal bed gas extraction equipment.

Background technology

China is a producing coal and uses coal big country, and coal bed gas resource is abundant. Calorific value and the natural gas of coal bed gas are suitable, can be mixed defeated mixed with natural gas, and also very clean after burning, produce hardly any waste gas, be cleaning, high-grade energy and the industrial chemicals emerging in the world in recent years. Reasonable development coal bed gas not only can substitute natural gas, improve energy supply and utilization rate, also can reduce the security risk of coal mining, so the exploitation of coal bed gas more and more comes into one's own.

The current still initial stage in cbm development of China, conventionally adopt control liquid degassing method, take out equipment (oil pumper, sucker rod, oil well pump) or with screw pump (or other pumps) the control liquid that draws water with three, make coal bed gas rely on self pressure to discharge and enter gathering line from well. On the one hand, because the back pressure of gathering line can affect the lower coal bed gas well capacity performance of pressure; On the other hand, owing to often having cinder, coal ash holddown, stifled pump in draining, cause shutting down, ruining pump, and along with the minimizing of the Sino-Japan water yield of well, this shutdown, stop the just more easily generation of fault of well, affect coal bed gas well production time efficiency. Cause China's every annual individual well methane output lower, cost of winning is high.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of novel coal bed gas extraction equipment simple and compact for structure, easy to operate, with low cost, can reduce production costs, and improves single well yield.

For solving the problems of the technologies described above, technical solution adopted in the utility model is:

A kind of novel coal bed gas extraction equipment, comprise base, power set, switch board, transmission mechanism, separator, compression set, condensing unit, tube connector and the water atomization plant of taking that is arranged on oil pipe bottom, described power set, switch board, transmission mechanism, separator, compression set and condensing unit are all arranged on base, the import of described separator is connected with oil pipe outlet by tube connector, described power set are by transmission mechanism drive compression device, coal seam G&W enters separator after entering oil pipe under the effect of compression set suction force, coal bed gas after separator separates enters compression set, it is cooling that compressed coal bed gas enters condensing unit, the coal bed gas that exports out from condensing unit enters gathering line, discharge through sewage draining exit through the isolated water of separator and impurity, the described water atomization plant of taking comprises supervisor, blade and water pipe, and described supervisor lower end is inner little outer large cone ports, and described water pipe upper end is connected with the cone ports inwall of supervisor lower end by blade, and described spacing with blades is distributed on pipe outer wall.

Preferably, described blade is distributed on tubulose connector, and described connector is connected with water pipe thread, and described connector lower end is provided with six side's boss; Described blade profile is the streamlined of thick middle thin edge.

Preferably, described supervisor upper end is provided with the female adapter being connected with oil pipe, and described female adapter meets SY/T5988-2012 standard.

Preferably, the surfaces externally and internally of described supervisor, blade and water pipe is all coated with tungsten layer.

Preferably, described transmission mechanism comprises Hooks coupling universal coupling, the first power transmission shaft, second driving shaft and two belt pulley set, the output shaft of described power set is connected with the first power transmission shaft by Hooks coupling universal coupling, described the first power transmission shaft and second driving shaft are erected at respectively on bearing block, two belt pulley set comprise belt wheel I, belt wheel II, belt wheel III, belt wheel IV, belt I and belt II, belt wheel I is arranged on the first power transmission shaft, belt wheel II and belt wheel III are arranged on second driving shaft, belt wheel IV is connected with the main shaft of compression set, belt I connects belt wheel I and belt wheel II, belt II connects belt wheel III and belt wheel IV. power set are passed to compression set by the first power transmission shaft and second driving shaft by power respectively.

Preferably, also comprise the shell being arranged on base, described power set, switch board, transmission mechanism, separator, compression set, condensing unit all arrange in the enclosure, described enclosure is divided into two separate space in left and right by the dividing plate on base, described power set and switch board are arranged on the left side of shell, described transmission mechanism, separator, compression set and condensing unit are arranged on the right-hand part of shell, and described condensing unit is arranged on cover top portion.

Preferably, described power set are gas engine, are also provided with branch line between the outlet of described gas engine and separator, provide source of the gas by branch line for gas engine.

Preferably, described power set are engine.

The beneficial effect that adopts technique scheme to produce is: utilize power set, through transmission mechanism, power is passed to compression set, in oil pipe under suction force effect, coal bed gas air-flow enters oil pipe by supervisor and the water pipe gap of taking water atomization plant, underground water forms current post in water pipe, be droplet in water pipe upper end by ascending air atomization, carry coal bed gas well outside with air-flow, coal bed gas aqueous mixtures enters separator and will be mixed in moisture in coal bed gas and ash content of coal from discharge, clean coal bed gas enters compression set compression, it is cooling that coal bed gas after compression enters condensing unit, finally enter gathering line. utilize the utility model without other pumping equipment is installed, by compression set and the associated working of taking water atomization plant, with coal bed gas, other impurity such as water, a small amount of coal ash are carried into ground, the drainage arrangement such as oil pumper or screw pump need not be installed again, utilize the separator carrying on equipment that gas is carried out to preliminary separation, condensation finally by condensing unit is sent gas into coal bed gas gathering line, due to the equipment that do not draw water, can avoid such as coal ash holddown, stop up the maintenance that stops production such as runner, not only save maintenance cost but also can ensure the performance of production capacity, rely on the mechanical auxiliary of compression set to adopt mode, not only there is no the impact of well head and gathering line back pressure, often have certain vacuum degree, be conducive to separating out of coal bed gas and giving full play to of single well productivity, improve the gas production efficiency of gas well, in addition, the air inlet of this mining equipment is directly connected with the oil pipe of coal bed gas well, does not install take water atomization plant in the situation that and also can work at down-hole oil tube, improve the recovery ratio of gas well.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is medium flow graph of the present utility model;

Fig. 4 is the structural representation of taking water atomization plant in Fig. 1;

Fig. 5 is the upward view of Fig. 4;

Fig. 6 is the structural representation of Fig. 4 Leaf;

Fig. 7 is that A in Fig. 6 is to view;

Fig. 8 is that B in Fig. 6 is to view;

In figure: 1-base, 2-shell, 3-power set, 4-switch board, 5-transmission mechanism, 6-separator, 7-compression set, 9-condensing unit, 10-takes water atomization plant, 11-air inlet, 12-exhaust outlet, 13-tube connector, 14-dividing plate, 15-discharge outlet, 16-gas engine, 17-oil pipe, 51-Hooks coupling universal coupling, 52-the first power transmission shaft, 53-second driving shaft, 54-bearing block, 55-belt wheel I, 56-belt wheel II, 57-belt wheel III, 58-belt wheel IV, 59-belt I, 60-belt II, 61-separator entrance, the outlet of 62-separator, 71-compression set entrance, the outlet of 72-compression set, 81-gas circulation line, 82-discharge pipe line, 83-branch line, 91-condensing unit entrance, the outlet of 92-condensing unit, 101-supervisor, 102-blade, 103-water pipe, 104-connector, 105-six side's boss.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

The novel coal bed gas extraction equipment of one as Figure 1-4, as shown in Fig. 1-8, comprise base 1, power set 3, switch board 4, transmission mechanism 5, separator 6, compression set 7, condensing unit 9, connect 13 and be arranged on oil pipe 17 bottoms take water atomization plant 10, described power set 3, switch board 4, transmission mechanism 5, separator 6, compression set 7 and condensing unit 9 are all arranged on base 1, described switch board 4 is arranged on power set 3 tops, described condensing unit 9 is arranged on the top of separator 6 and compression set 7, the import of described separator 6 is connected with oil pipe 17 outlets by tube connector 13, described power set 3 are by transmission mechanism 5 drive compression devices 7, first coal seam G&W enters takes water atomization plant 10, after making water fogging, together enter oil pipe 17, under the effect of compression set 7 suction forces, enter separator 6, coal bed gas after separator 6 separates enters compression set 7 and compresses, it is cooling that compressed coal bed gas enters condensing unit 9 again, cooled coal bed gas out enters gathering line from condensing unit outlet 92, discharge through sewage draining exit through the isolated water of separator 6 and impurity, the described water atomization plant 10 of taking comprises supervisor 101, blade 102 and water pipe 103, described supervisor 101 lower ends are inner little outer large cone ports, described water pipe 103 is connected with the cone ports inwall of supervisor 101 lower ends by blade 102, and described blade 102 is distributed on water pipe 103 outer walls.

In order to facilitate installing/dismounting, described blade 102 is distributed on tubulose connector 104, and described connector 104 is threaded with water pipe 103, and described connector 104 lower ends are provided with six side's boss 105, application of force when easy disassembly; Described blade 102 cross sections are the streamlined of thick middle thin edge, to reduce resistance; In order to improve the interchangeability of taking between water atomization plant 10 and oil pipe 17, described supervisor 101 upper ends are provided with the female adapter being connected with oil pipe 17, and described female adapter meets SY/T5988-2012 standard, is convenient for changing and takes water atomization plant 10. To take the wearability of water atomization plant 10, corrosion-resistant and high-temperature stability in order improving simultaneously, to take water atomization plant 10 completion of processing to its entirety plating tungsten, make to be responsible for 101, the surfaces externally and internally of blade 102 and water pipe 103 is all coated with tungsten layer.

As shown in Figure 3, the operation principle of this equipment is that compression set 7 is communicated with oil pipe 17 by separator 6 and tube connector 13, in the interior formation suction force of oil pipe 17, down-hole coal bed gas forms air-flow and between 101 lower cone ports and water pipe 103, enters supervisor 101 and oil pipe 17 by being responsible for; In the time that water pipe 103 lower end was flooded in level of ground water rising, be responsible for 101 interior suction force effects, underground water is at the interior formation current of water pipe 103 post, be droplet in water pipe 103 upper end ejections by the coal bed gas aerodynamic atomization rising, and carry coal bed gas well outside by ascending air, thereby play the effect of controlling underground water liquid level.

This equipment medium flows to as follows: coal seam air water gaseous mixture enters from oil pipe 17 bottoms, export through tube connector 13 at oil pipe 17, air inlet 11 enters the air delivering pipeline 81 being connected with separator entrance 61, first carry out gas-liquid separation at separator 6, the coal ash being mingled with in coal bed gas and water are separated through the sewage draining exit of separator 6 and entered discharge pipe line 82, final from discharge outlet 15 device for transferring of discharge pipe line 82, enter compression set 7 through air delivering pipeline 81 from compression set entrance 71 again from separator outlet 62 coal bed gas out, after compressed device 7 compressions of coal bed gas, export 72 out from compression set, entering condensing unit 9 through air delivering pipeline 81 autocondensation device portals 91 again lowers the temperature, after coal bed gas cooling, export 92 out from condensing unit, finally enter gathering line from the exhaust outlet 12 of air delivering pipeline 81.

As shown in Figure 2, described transmission mechanism 5 comprises Hooks coupling universal coupling 51, the first power transmission shaft 52, second driving shaft 53 and two belt pulley set, the output shaft of described power set 3 is connected with the first power transmission shaft 52 by Hooks coupling universal coupling 51, described the first power transmission shaft 52 and second driving shaft 53 are erected at respectively on bearing block 54, two belt pulley set comprise belt wheel I55, belt wheel II 56, belt wheel III 57, belt wheel IV 58, belt I59 and belt II 60, belt wheel I55 is arranged on the first power transmission shaft 52, belt wheel II 56 and belt wheel III 57 are arranged on second driving shaft 53, belt wheel IV 58 is connected with the main shaft of compression set 7, belt I59 connects belt wheel I55 and belt wheel II 56, belt II 60 connects belt wheel III 57 and belt wheel IV 58. power set 3 are passed to compression set 7 by the first power transmission shaft 52 and second driving shaft 53 by power respectively.

Specific works process embodiment illustrated in fig. 1 is as follows: power set 3 pass to compression set 7 by transmission mechanism 5 by power, compression set 7 is started working, through separator 6, oil pipe 17 is applied to certain negative pressure, under the interior suction force effect of oil pipe 17, coal bed gas air-flow enters oil pipe 17 by the supervisor 101 who takes water atomization plant 10 with water pipe 103 gaps, underground water is at the interior formation current of water pipe 103 post, in the time that water pipe 103 upper ends spray, be droplet by ascending air atomization, carry coal bed gas well outside with air-flow; First the coal seam air water gaseous mixture of being extracted out ground by oil pipe 17 enters separator 6 from air inlet 11, and separator 6 can be selected gas-liquid separator, utilizes gas-liquid separator that the moisture and the ash content of coal that are mixed in coal bed gas are discharged from enter discharge pipe line 82 through sewage draining exit; Clean coal bed gas enters compression set 7 from compression set entrance 71 and compresses, compression set 7 can be selected reciprocating compressor, high temperature coal bed gas after compression is from compression set outlet 72 outputs, enter condensing unit through air delivering pipeline 81 autocondensation device portals 91 cooling, condensing unit 9 can be selected air-cooled condenser, and cooled coal bed gas finally enters gathering line from condensing unit outlet 92 outputs.

In brief, be exactly that power set 3 are passed to compression set 7 through transmission mechanism 5 by power coal bed gas is aspirated up, entering separator 6 separates through discharge pipe line 82 and discharges being mixed in moisture in coal bed gas and coal ash again, clean coal bed gas enters compression set 7 successively through air delivering pipeline 81, and to compress, enter condensing unit 9 cooling, finally enters gathering line.

On described separator 6, be also provided with Level meter, on the air delivering pipeline 81 of air inlet 11 rear ends, be provided with Pressure gauge and attemperating unit, can, according to the rotating speed of the whole equipment of gas well pressure control, also can manually control rotating speed by switch board 4; Detect the liquid level in coal bed gas temperature and separator 6 simultaneously, in the time that temperature exceedes certain value, automatic shutdown protection, the control valve on discharge pipe line 82 can adopt the magnetic valve being connected with switch board 4 simultaneously, makes it have automatically and manual drainage function. Utilize this equipment automatically to adjust pump drainage speed, automatic start-stop and warning function according to the situation of gas well pressure.

When this equipment is applied to high temperature, high and cold and dust storm is large when regional, should be on base 1 mounting casing 2, described power set 3, switch board 4, transmission mechanism 5, separator 6, compression set 7 and condensing unit 9 are all arranged in shell 2, described shell 2 middle parts are provided with dividing plate 14, described power set 3 and switch board 4 are arranged on the left side of shell 2, described transmission mechanism 5, separator 6, compression set 7 and condensing unit 9 are arranged on the right-hand part of shell 2, and described condensing unit 9 is arranged on shell 2 tops; Shell 2 is a kind of side's cover structures, the dividing plate 14 of being made by steel plate is divided into two parts, and every part all has three protective plates and top board, and outer wall and top have ventilating opening, shell 2 and base 1 are installed together the space of a sealing of rear formation, play the effect of protection.

As shown in Figure 3, in the time that power set 3 are selected gas engine 16, described air delivering pipeline 81 also comprises the branch line 83 that is communicated with gas engine 16, described branch line 83 communicates with the outlet of separator 6, for gas engine 16 provides source of the gas, can save the device that source of the gas is provided in addition with separator outlet 62 branch lines that are communicated with 83.

In addition, described power set 3 also can be selected engine, can select as required other power source such as motor or internal combustion engine, and this is just without branch line 83.

Utilize the utility model without other pumping equipment is installed, by compression set 7 and the associated working of taking water atomization plant 10, with coal bed gas, other impurity such as water, a small amount of coal ash are carried into ground, the drainage arrangement such as oil pumper or screw pump need not be installed again, utilize the separator 6 carrying on equipment that gas is carried out to preliminary separation, condensation finally by condensing unit 9 is sent gas into coal bed gas gathering line, due to the equipment that do not draw water, can avoid such as coal ash holddown, stop up the maintenance that stops production such as runner, not only save maintenance cost but also can ensure the performance of production capacity; Rely on the mechanical auxiliary of compression set 7 to adopt mode, not only there is no the impact of well head and gathering line back pressure, often have certain vacuum degree, be conducive to separating out of coal bed gas and giving full play to of single well productivity, improve the gas production efficiency of gas well; In addition, the air inlet of this mining equipment is directly connected with the oil pipe of coal bed gas well, does not install take water atomization plant in the situation that and also can work at down-hole oil tube, improve the recovery ratio of gas well.

Claims (8)

1. a novel coal bed gas extraction equipment, it is characterized in that: comprise base (1), power set (3), switch board (4), transmission mechanism (5), separator (6), compression set (7), condensing unit (9), tube connector (13) and be arranged on oil pipe (17) bottom take water atomization plant (10), described power set (3), switch board (4), transmission mechanism (5), separator (6), compression set (7) and condensing unit (9) are all arranged on base (1), the import of described separator (6) is connected with oil pipe (17) outlet by tube connector (13), described power set (3) are by transmission mechanism (5) drive compression device (7), coal seam G&W enters after oil pipe (17), under the effect of compression set (7) suction force, enter separator (6), coal bed gas after separator (6) separates enters compression set (7) compression, it is cooling that compressed coal bed gas enters condensing unit (9) again, enter gathering line from condensing unit outlet (92) coal bed gas out, discharge through sewage draining exit through the isolated water of separator (6) and impurity, the described water atomization plant (10) of taking comprises supervisor (101), blade (102) and water pipe (103), described supervisor (101) lower end is inner little outer large cone ports, described water pipe (103) upper end is connected with the cone ports inwall of supervisor (101) lower end by blade (102), and described blade (102) is uniformly at intervals at water pipe (103) outer wall.

2. novel coal bed gas extraction equipment as claimed in claim 1, it is characterized in that: described blade (102) is distributed on tubulose connector (104), described connector (104) is threaded with water pipe (103), and described connector (104) lower end is provided with six side's boss (105); Described blade (102) cross section is the streamlined of thick middle thin edge.

3. novel coal bed gas extraction equipment as claimed in claim 1, is characterized in that: described supervisor (101) upper end is provided with the female adapter being connected with oil pipe (17), and described female adapter meets SY/T5988-2012 standard.

4. novel coal bed gas extraction equipment as claimed in claim 1, is characterized in that: the surfaces externally and internally of described supervisor (101), blade (102) and water pipe (103) is all coated with tungsten layer.

5. novel coal bed gas extraction equipment as claimed in claim 1, it is characterized in that: described transmission mechanism (5) comprises Hooks coupling universal coupling (51), the first power transmission shaft (52), second driving shaft (53) and two belt pulley set, the output shaft of described power set (3) is connected with the first power transmission shaft (52) by Hooks coupling universal coupling (51), described the first power transmission shaft (52) and second driving shaft (53) are erected at respectively on bearing block (54), two belt pulley set comprise belt wheel I(55), belt wheel II (56), belt wheel III (57), belt wheel IV (58), belt I(59) and belt II (60), belt wheel I(55) be arranged on the first power transmission shaft (52), belt wheel II (56) and belt wheel III (57) are arranged on second driving shaft (53), belt wheel IV (58) is connected with the main shaft of compression set (7), belt I(59) connection belt wheel I(55) and belt wheel II (56), belt II (60) connects belt wheel III (57) and belt wheel IV (58).

6. novel coal bed gas extraction equipment as claimed in claim 1, it is characterized in that: also comprise the shell (2) being arranged on base (1), described power set (3), switch board (4), transmission mechanism (5), separator (6), compression set (7) and condensing unit (9) are all arranged in shell (2), described shell (2) is inner is divided into two separate space in left and right by the dividing plate (14) on base (1), described power set (3) and switch board (4) are arranged on the left side of shell (2), described transmission mechanism (5), separator (6), compression set (7) and condensing unit (9) are arranged on the right-hand part of shell (2), described condensing unit (9) is arranged on shell (2) top.

7. novel coal bed gas extraction equipment as claimed in claim 1, it is characterized in that: described power set (3) are gas engine (16), between the outlet of described gas engine (16) and separator (6), be also provided with branch line (83), provide source of the gas by branch line (83) for gas engine (16).

8. novel coal bed gas extraction equipment as claimed in claim 1, is characterized in that: described power set (3) are engine.