CN219953311U

CN219953311U - Drainage pressure reducing device of coalbed methane exploration well

Info

Publication number: CN219953311U
Application number: CN202321292153.9U
Authority: CN
Inventors: 孔庆虎; 来永伟; 朱能闯; 李志慧; 王国蓉; 王胜娟
Original assignee: China National Administration Of Coal Geology First Exploration Bureau Geological Exploration Institute
Current assignee: China National Administration Of Coal Geology First Exploration Bureau Geological Exploration Institute
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-11-03
Anticipated expiration: 2033-05-25

Abstract

The utility model provides a drainage pressure reducing device of a coalbed methane exploration well, which comprises: a base; the electric pump main body is fixedly arranged on the right side of the top of the base, an input pipe of the electric pump main body is fixedly connected with a water pumping pipe, and an output pipe of the electric pump main body is fixedly connected with a drain pipe; the control box is fixedly arranged on one side, close to the electric pump main body, of the top of the base, and the output end of the control box is electrically connected with the input end of the electric pump main body; the four hydraulic pumps are fixedly arranged at four corners of the bottom of the base in equal intervals, and when the device is used, a worker energizes the power motor through an external power supply, the first bevel gear is meshed with the second bevel gear, so that the fan blades rotate at high speed at the bottom of the filter plate, centrifugal force is generated to move solid impurities blocked on the filter plate and the like to the vicinity of the edge baffle plate, loss of equipment is avoided, and the service life of the equipment is prolonged.

Description

Drainage pressure reducing device of coalbed methane exploration well

Technical Field

The utility model relates to the technical field of coal bed gas exploitation equipment, in particular to a drainage pressure reducing device of a coal bed gas exploration well.

Background

Coalbed methane and natural gas are always an important energy source, compared with coal and petroleum, the coalbed methane and natural gas do not pollute the environment and are defined as clean energy sources, but one of the biggest problems preventing the natural gas from being fully exploited is that a gas well is flooded, water in a shaft blocks the natural gas in a stratum from flowing into the well, so that the natural gas cannot be exploited to the ground, and the drainage methods currently used are roughly classified into three categories: the first foam drainage method is to fill the well bore with foam by throwing chemical substances capable of reacting with water or generating foam in water to the well bore, on one hand, the bottom hole pressure can be increased, the purpose of drainage can be achieved, meanwhile, the foam can carry water, the second needle plunger is used for drainage, the method is that a plunger is placed in the well bore, the energy of the well is utilized for intermittent drainage, and the third method is to pump the bottom hole water to the ground by an electric pump (a piston pump or a submersible pump).

In the prior art, for example, the Chinese patent number is: a drainage depressurization device for a coalbed methane exploration well, which belongs to the technical field of coalbed methane exploitation equipment. The utility model particularly relates to a drainage depressurization device for a coalbed methane exploration well, wherein an electric pump main body is fixedly arranged at the top of the device main body, an input pipe of the electric pump main body is connected with a water suction pipe, an acoustic insulation sleeve is sleeved outside the water suction pipe, a liquid inlet end of the acoustic insulation sleeve is connected with a crushing cylinder, an output pipe of the electric pump main body is connected with a drain pipe, a control box is fixedly arranged above the device main body, the input end of the electric pump main body is electrically connected with the output end of the control box, and the top of the crushing cylinder is connected with a cylinder cover. The drainage pressure reducing device for the coal bed methane exploration well can realize more precise and efficient drainage, effectively improve the operation stability of the device and bring better use prospect.

The technical scheme has the beneficial effects that in the drainage depressurization process of the coal-bed gas well, coal dust and coal slime are often discharged from the coal bed, so that a water pipe for drainage is blocked, the water yield is reduced, even water is not discharged, the shutdown of the coal-bed gas well is seriously caused, and the production is stopped, so that the inconvenience is caused, but in the drainage process, solid impurities in the coal bed are not only coal dust and coal slime, but also some hard solid impurities including stones and the like are crushed by the crushing cylinder to cause the loss of the crushing cylinder, the crushing cylinder is seriously damaged even, the working efficiency is reduced, and the service life of equipment is reduced.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, in the drainage process, solid impurities in a coal bed are not only pulverized coal slime, but also hard solid impurities including stones and the like are crushed by a crushing cylinder to cause the loss of the crushing cylinder, seriously damage the crushing cylinder and reduce the working efficiency and the service life of equipment.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a drainage pressure reducing device for a coalbed methane exploration well, comprising:

a base;

the electric pump main body is fixedly arranged on the right side of the top of the base, an input pipe of the electric pump main body is fixedly connected with a water pumping pipe, and an output pipe of the electric pump main body is fixedly connected with a drain pipe;

the control box is fixedly arranged on one side, close to the electric pump main body, of the top of the base, and the output end of the control box is electrically connected with the input end of the electric pump main body;

four hydraulic pumps are fixedly arranged at four corners of the bottom of the base at equal intervals.

Preferably, a water pumping port is formed in the bottom of the water pumping pipe, a filter plate is fixedly mounted on the inner wall of the water pumping pipe close to the water pumping port, and three baffles with the same equal distance are fixedly mounted on the outer wall of the water pumping pipe away from the water pumping port.

Preferably, one side fixedly connected with two fixed blocks of draft tube bottom, two the opposite side fixed mounting of fixed block has power motor, power motor's input and the output electric connection of control box, filter top center department fixedly connected with waterproof vacuum tube, waterproof vacuum tube's the other end fixed connection is in the centre of two fixed blocks, just waterproof vacuum tube's fixed penetration the outer wall of draft tube.

Preferably, the output shaft of the power motor is fixedly connected with a first rotating shaft, the other side of the first rotating shaft is fixedly connected with a first bevel gear, a second bevel gear is connected to the first bevel gear in a meshed mode, and a second rotating shaft is fixedly connected to the bottom of the second bevel gear.

Preferably, the bottom of the second rotating shaft is fixedly provided with a plurality of equidistant fan blades, and the bottom of the second rotating shaft, which is far away from the fan blades, is fixedly provided with a limiting plate.

Preferably, the bottom of one side of the drain pipe far away from the electric pump main body is provided with a plurality of water outlets which are the same in equal distance.

Compared with the prior art, the utility model has the advantages and positive effects that;

1. when the electric pump body pumps water through the water pumping pipe, the water flow is subjected to solid-liquid separation by the filter plate on the water pumping port, then the power motor is electrified through the external power supply, the power motor positively rotates to drive the first rotating shaft to rotate in the same direction with the first bevel gear, and the first bevel gear is meshed with the second bevel gear to drive the second bevel gear and the second rotating shaft to rotate, so that the fan blades rotate at a high speed, centrifugal force is generated to move solid impurities and the like blocked on the filter plate to the position near the edge baffle plate, and the solid impurities and the like cannot return to the filter plate to block the water pumping port due to the fact that the suction inside the water pumping pipe is not generated at the baffle plate, so that loss is not caused to equipment, and the service life of the equipment is prolonged.

2. In the utility model, when a worker uses the device, the base of the device is firstly and stably placed on the ground, and the proper angle of the device is adjusted by lifting or lowering the four hydraulic pumps, so that the device is more stable in working, is convenient for the user to use, and is more practical.

Drawings

FIG. 1 is a schematic perspective view of a drainage and depressurization device for a coalbed methane exploration well;

FIG. 2 is a schematic diagram of a perspective structure of a drainage and depressurization device of a coalbed methane exploration well;

FIG. 3 is a schematic view of a part of a drainage and depressurization device of a coalbed methane exploration well according to the utility model;

fig. 4 is a schematic view of a partial cross-sectional perspective structure of a drainage and depressurization device of a coalbed methane exploration well.

Legend description: 1. a base; 2. an electric pump body; 3. a water pumping pipe; 4. a drain pipe; 401. a water outlet; 5. a control box; 6. a hydraulic pump; 7. a power motor; 701. a fixed block; 702. a first rotation shaft; 703. a first bevel gear; 704. waterproof vacuum tube; 705. a second rotation shaft; 706. a second bevel gear; 707. a fan blade; 708. a limiting plate; 8. a water pumping port; 801. a filter plate; 802. and a baffle.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

Embodiment 1, as shown in fig. 1-4, the present utility model provides a drainage and depressurization device for a coalbed methane exploration well, comprising:

a base 1;

the electric pump main body 2 is fixedly arranged on the right side of the top of the base 1, an input pipe of the electric pump main body 2 is fixedly connected with a water pumping pipe 3, and an output pipe of the electric pump main body 2 is fixedly connected with a drain pipe 4;

the control box 5 is fixedly arranged on one side, close to the electric pump main body 2, of the top of the base 1, and the output end of the control box 5 is electrically connected with the input end of the electric pump main body 2;

the four hydraulic pumps 6 are fixedly arranged at four corners of the bottom of the base 1 at equal intervals.

Further, as shown in fig. 1-4, the bottom of the water pumping pipe 3 is provided with a water pumping port 8, the inner wall of the water pumping pipe 3 is close to the water pumping port 8, a filter plate 801 is fixedly installed on the water pumping pipe 3, the outer wall of the water pumping pipe 3 is far away from the water pumping port 8, three baffle plates 802 with the same equal distance are fixedly installed on the water pumping port 8, solids and moisture in a coal layer can be separated through filtration, an aqueous solution is pumped into the ground from the water pumping port 8 through the water pumping pipe 3 through the electric pump main body 2, and then is discharged through the water draining pipe 4, the filter plate 801 has the functions of filtering and separating, the baffle plates 802 are used for shielding solid impurity stones and the like, and preventing the solid impurity stones from flying out of the range of the baffle plates 802 through centrifugal force too fast, so that hazards are caused.

Further, as shown in fig. 1-4, one side of the bottom of the water pumping pipe 3 is fixedly connected with two fixing blocks 701, the other side of the two fixing blocks 701 is fixedly provided with a power motor 7, the input end of the power motor 7 is electrically connected with the output end of the control box 5, the center of the top of the filter plate 801 is fixedly connected with a waterproof vacuum pipe 704, the other end of the waterproof vacuum pipe 704 is fixedly connected between the two fixing blocks 701, the fixing of the waterproof vacuum pipe 704 penetrates through the outer wall of the water pumping pipe 3, the two fixing blocks 701 are used for keeping the stability of the power motor 7, the power motor 7 is used for providing initial power for an internal rotating shaft, a bevel gear and the like, and the waterproof vacuum pipe 704 is mainly used for providing water resistance for the rotating shaft, the bevel gear and the like which work inside so as to prevent water flow from reducing the working efficiency and protecting the service life of parts.

Further, as shown in fig. 1-4, the output shaft of the power motor 7 is fixedly connected with a first rotating shaft 702, the other side of the first rotating shaft 702 is fixedly connected with a first bevel gear 703, a second bevel gear 706 is connected on the first bevel gear 703 in a meshed manner, and a second rotating shaft 705 is fixedly connected at the bottom of the second bevel gear 706.

Further, as shown in fig. 1-4, the bottom of the second rotating shaft 705 is fixedly provided with a plurality of equally spaced fan blades 707, the bottom of the second rotating shaft 705 far away from the fan blades 707 is fixedly provided with a limiting plate 708, the fan blades 707 mainly separate solid impurity stones and the like from water flow through centrifugal force caused by high-speed rotation of the fan blades, so that the filter plate 801 is prevented from being blocked in the drainage process, the solid impurities gradually get far away from the center through centrifugal force and approach the baffle 802, suction force in the drainage process is lost at the position of the baffle 802, the solid impurities leave the vicinity of the water suction port 8, and the limiting plate 708 mainly limits the fan blades 707 to prevent the solid impurity stones from falling off in the high-speed rotation.

Further, as shown in fig. 1 to 4, the bottom of the side of the drain pipe 4 far from the electric pump main body 2 is provided with a plurality of water outlets 401 with the same equal distance, and water flow in the drain pipe 4 can be respectively discharged according to water pressure through the plurality of water outlets 401 with the same equal distance, so that the drainage pressure is reduced.

Working principle: when the device is used by workers, the device base 1 is placed on the ground stably, the device is adjusted to be at a proper angle through the rising or the falling of the four hydraulic pumps 6, the device is made to be more stable in operation, the electric pump main body 2 is controlled to work through the control box 5, when the electric pump main body 2 pumps water through the water pumping pipe 3, the water flow is subjected to solid-liquid separation through the filter plate 801 on the water pumping port 8, then the power motor 7 is electrified through an external power supply, the power motor 7 positively rotates to drive the first rotating shaft 702 to rotate with the first bevel gear 703 in the same direction, the first bevel gear 703 is connected with the meshing of the second bevel gear 706, the second bevel gear 706 is driven to rotate with the second rotating shaft 705, the fan blades 707 rotate at a high speed at the bottom of the filter plate 801, solid impurities and the like blocked on the filter plate 801 are generated by centrifugal force to be moved to the vicinity of the edge baffle 802, the filter plate 801 cannot be returned to the filter plate 801 due to the suction force inside the baffle 802, the solid impurities and the like, the like cannot block the water pumping port 8 on the filter plate 801, and the loss of the equipment is not caused, and meanwhile, the service life of the equipment is prolonged, the drain pipe 4 can be discharged by the water flow in the same direction, the water pressure is reduced by the water pressure of the drain pipe 4, and the user can be respectively, and the water is conveniently used by the user.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. Drainage pressure reducing device of coalbed methane exploration well, characterized by comprising:

a base (1);

the electric pump main body (2) is fixedly arranged on the right side of the top of the base (1), an input pipe of the electric pump main body (2) is fixedly connected with a water pumping pipe (3), and an output pipe of the electric pump main body (2) is fixedly connected with a drain pipe (4);

the control box (5) is fixedly arranged at one side, close to the electric pump main body (2), of the top of the base (1), and the output end of the control box (5) is electrically connected with the input end of the electric pump main body (2);

the four hydraulic pumps (6) are fixedly arranged at four corners of the bottom of the base (1) at equal intervals.

2. The drainage and depressurization device for a coalbed methane exploration well according to claim 1, wherein: the bottom of the water pumping pipe (3) is provided with a water pumping port (8), the inner wall of the water pumping pipe (3) is close to the water pumping port (8), a filter plate (801) is fixedly installed on the water pumping port, and three baffle plates (802) with the same equal distance are fixedly installed on the outer wall of the water pumping pipe (3) and away from the water pumping port (8).

3. The drainage and depressurization device of a coalbed methane exploration well according to claim 2, wherein: one side fixedly connected with two fixed blocks (701) of condenser tube (3) bottom, two opposite side fixed mounting of fixed block (701) has motor power (7), the input of motor power (7) and the output electric connection of control box (5), the department fixedly connected with waterproof vacuum tube (704) in the top center of filter (801), the other end fixed connection of waterproof vacuum tube (704) is in the centre of two fixed blocks (701), just the fixed of waterproof vacuum tube (704) runs through the outer wall of condenser tube (3).

4. A drainage and depressurization device for a coalbed methane exploration well according to claim 3 and characterized in that: the output shaft of the power motor (7) is fixedly connected with a first rotating shaft (702), the other side of the first rotating shaft (702) is fixedly connected with a first bevel gear (703), a second bevel gear (706) is connected to the first bevel gear (703) in a meshed mode, and a second rotating shaft (705) is fixedly connected to the bottom of the second bevel gear (706).

5. The drainage and depressurization device for a coalbed methane exploration well of claim 4, wherein: the bottom of the second rotating shaft (705) is fixedly provided with a plurality of equally spaced fan blades (707), and a limiting plate (708) is fixedly arranged on the second rotating shaft (705) far away from the bottom of the fan blades (707).

6. The drainage and depressurization device for a coalbed methane exploration well according to claim 1, wherein: the bottom of one side of the drain pipe (4) far away from the electric pump main body (2) is provided with a plurality of drain outlets (401) with the same equidistance.