CN216406795U

CN216406795U - Increase effectual coal bed gas exploitation fracturing unit of splitting

Info

Publication number: CN216406795U
Application number: CN202123234313.8U
Authority: CN
Inventors: 王栓广; 程超; 许晓晨; 张弛; 王建科
Original assignee: Shanxi Lanhua Coalbed Gas Co ltd
Current assignee: Shanxi Lanhua Coalbed Gas Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-04-29
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a coal bed gas exploitation fracturing device with a good fracturing increasing effect, which comprises a fracturing rubber cylinder and a water injection pipe detachably connected to the surface of the fracturing rubber cylinder, wherein a lifting mechanism used for driving the fracturing rubber cylinder to move along the direction of a longitudinal axis is arranged above the fracturing rubber cylinder, the lifting mechanism comprises a driving source and a driving assembly arranged at the output end of the driving source, the driving assembly is connected with two opposite sides of the fracturing rubber cylinder, the driving source is a motor, the motor is powered by an external power supply, the motor is arranged on the rear side surface of a protective cover, a rotating shaft is arranged at the output end of the motor, and one end of the rotating shaft extends into the protective cover. According to the utility model, the lifting mechanism is arranged so as to drive the fracturing rubber cylinder to move downwards to a preset position to be fractured, so that the fracturing position of the device is more accurate, and the driving assemblies connected with the two opposite sides of the fracturing rubber cylinder are arranged so that the fracturing rubber cylinder is more stable in the up-and-down moving process and is not easy to shake.

Description

Increase effectual coal bed gas exploitation fracturing unit of splitting

Technical Field

The utility model relates to the technical field of coal bed gas exploitation, in particular to a coal bed gas exploitation fracturing device with a good fracturing increasing effect.

Background

The coal bed gas is a gas resource associated with coal and symbiotic with the coal, refers to hydrocarbon gas stored in a coal bed, takes methane as a main component, and belongs to unconventional natural gas. The coal bed gas mainly adsorbs the surfaces of coal matrix particles, and part of the hydrocarbon gas is dissociated in coal pores or dissolved in coal bed water, is an associated mineral resource of coal, and is a clean and high-quality energy and chemical raw material which rises internationally in nearly twenty years. Before coal mining, gas in the coal seam is mined and drained, the quantity of air-exhausted gas can be greatly reduced, the requirement of the coal mine on ventilation is reduced, the gas explosion rate of the coal mine is reduced by 70 to 85 percent, and the safety production condition of miners is improved. The development and utilization of the coal bed gas have the effects of achieving multiple purposes: clean energy and great economic benefit can be generated by commercialization, and the method is a strategic national resource.

In the process of coal bed gas exploitation, a fracturing device is needed to be used, so that the stratum is fractured.

The existing fracturing device is usually in a water injection and pressurization mode through a fracturing rubber cylinder, but the depth of the fracturing rubber cylinder in a well is inconvenient to adjust.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a coal bed gas exploitation fracturing device with a good fracturing increasing effect, which is provided with a lifting mechanism so as to drive a fracturing rubber cylinder to move downwards to a preset position to be fractured, so that the fracturing position of the device is more accurate, and the fracturing rubber cylinder is more stable in the up-and-down moving process and is not easy to shake by arranging driving components connected with two opposite sides of the fracturing rubber cylinder, so that the problems in the background art are solved.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fracturing device is adopted in coal bed gas that it is effectual to increase and splits includes the fracturing packing element to and can dismantle the water injection pipe of connecting in fracturing packing element surface, fracturing packing element top is provided with the elevating system who is used for driving its removal along the axis of ordinates direction, elevating system includes the driving source to and install the drive assembly at the driving source output, drive assembly is connected with the relative both sides of fracturing packing element.

Preferably, the driving source is a motor, and the motor is powered by an external power supply.

Preferably, drive assembly includes the safety cover, the motor is installed at safety cover rear side surface, and the output of motor installs the pivot, pivot one end extends to in the safety cover, and the extension end of pivot is fixed with the worm wheel, the safety cover internal rotation is connected with the worm with worm wheel intermeshing, the first bevel gear of the equal fixedly connected with in worm both ends, the safety cover internal rotation is connected with the internal thread cover of two symmetric distributions, two the internal thread cover surface all cup jointed with two first bevel gear intermeshing's second bevel gear, internal thread cover one end extends to the safety cover below, and extends end threaded connection and have a threaded rod, two threaded rod difference fixed connection is in the relative both sides of fracturing packing element, two through gag lever post fixed connection between the threaded rod.

Preferably, a lubricating mechanism for lubricating is arranged in the internal thread sleeve.

Preferably, the lubricating mechanism comprises a storage box fixed on the top surface of the inner wall of the internal thread sleeve, a sponge is filled in the storage box, lubricating liquid is adsorbed in the sponge, the bottom surface of the storage box is telescopically inserted with an extrusion rod, and the bottom surface of the storage box is provided with a plurality of through holes.

Preferably, the lower end of the internal thread sleeve is sleeved with a brush, and bristles of the brush are attached to the threaded rod and used for cleaning impurities on the surface of the threaded rod.

Compared with the prior art, the utility model has the following beneficial effects:

1. through setting up elevating system to the drive fracturing packing element moves down to the preset position of wanting the fracturing, makes the fracturing position of device more accurate, through setting up the drive assembly who is connected with the relative both sides of fracturing packing element, makes the fracturing packing element more stable at the in-process that reciprocates, and difficult production is rocked.

2. When the threaded rod moved upwards, the threaded rod top promoted the stripper bar and removed to storing the box cavity, made the stripper bar extrusion store the sponge in the box cavity, will adsorb the lubricated liquid extrusion in the sponge, made lubricated liquid flow to the threaded rod surface through the through-hole and carry out lubricated work.

Drawings

FIG. 1 is a schematic structural diagram of a coal bed methane mining fracturing device with a good fracturing increasing effect;

FIG. 2 is a schematic structural diagram of a driving assembly according to the present invention;

FIG. 3 is a schematic cross-sectional view of the female thread bush according to the present invention;

fig. 4 is a schematic structural view of the lubricating mechanism of the present invention.

In the figure: 1. a fracturing rubber cylinder; 2. a lifting mechanism; 21. a drive source; 22. a drive assembly; 221. a protective cover; 222. a worm gear; 223. a worm; 224. a first bevel gear; 225. an internal thread sleeve; 226. a second bevel gear; 227. a threaded rod; 228. a limiting rod; 3. a lubrication mechanism; 31. a storage box; 32. a sponge; 33. a lubricating fluid; 34. an extrusion stem; 35. a through hole; 4. and a brush.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: the utility model provides a coal bed gas exploitation fracturing unit that it is effectual to increase and split includes fracturing rubber cylinder 1 to and can dismantle the water injection pipe of connecting in 1 surface of fracturing rubber cylinder, 1 top of fracturing rubber cylinder is provided with and is used for driving its elevating system 2 that removes along the axis of ordinates direction, elevating system 2 includes driving source 21 to and install the drive assembly 22 at driving source 21 output, drive assembly 22 is connected with 1 relative both sides of fracturing rubber cylinder.

In use, please refer to fig. 1-2, through setting up elevating system 2 to drive fracturing packing element 1 moves down to the preset position of wanting the fracturing, make the fracturing position of device more accurate, through setting up the drive assembly 22 of being connected with the relative both sides of fracturing packing element 1, make fracturing packing element 1 more stable at the in-process that reciprocates, difficult production is rocked.

Referring to fig. 1 to 2, the driving source 21 is a motor, and the motor is powered by an external power source.

Referring to fig. 1 to 2, the driving assembly 22 includes a protective cover 221, the motor is mounted on a rear surface of the protective cover 221, and the output end of the motor is installed with a rotating shaft, one end of the rotating shaft extends into the protective cover 221, and the extending end of the rotating shaft is fixed with a worm wheel 222, a worm 223 engaged with the worm wheel 222 is rotatably connected to the protective cover 221, two ends of the worm 223 are fixedly connected with first bevel gears 224, two symmetrically distributed internal thread sleeves 225 are rotatably connected in the protective cover 221, second bevel gears 226 which are meshed with the two first bevel gears 224 are sleeved on the surfaces of the two internal thread sleeves 225, one end of each internal thread sleeve 225 extends to the lower part of the protective cover 221, and extension end threaded connection has threaded rod 227, two threaded rod 227 is fixed connection in the relative both sides of fracturing rubber barrel 1 respectively, two pass through gag lever post 228 fixed connection between the threaded rod 227.

In use, referring to fig. 1 to 2, the motor of the driving source 21 is started to drive the worm wheel 222 mounted at the output end to rotate, the worm wheel 222 drives the worm 223 engaged with the worm wheel 222 to rotate, the worm 223 drives the first bevel gear 224 fixed at two ends of the worm wheel to rotate, the first bevel gear 224 drives the second bevel gear 226 engaged with the worm wheel to rotate, the second bevel gear 226 drives the internal thread sleeve 225 to rotate, the internal thread sleeve 225 drives the threaded rod 227 connected with the threaded rod to move downwards, the threaded rod 227 drives the fracturing rubber cylinder 1 to move downwards at the same time, and the movement direction of the threaded rod 227 is limited by arranging the limiting rod 228 to prevent the threaded rod 227 from rotating along with the rotation of the internal thread sleeve 225.

Referring to fig. 3 to 4, a lubricating mechanism 3 for lubricating is disposed in the internal thread sleeve 225.

In use, referring to fig. 3 to 4, since a part of the threaded rod 227 needs to be exposed to air, the surface of the threaded rod 227 is easily rusted, and the device is unsmooth in clamping, and the lubricating mechanism 3 is arranged to facilitate the lubricating work during the use of the device, so that the operation is convenient.

Referring to fig. 3 to 4, the lubricating mechanism 3 includes a storage box 31 fixed on the top surface of the inner wall of the internal thread sleeve 225, a sponge 32 is filled in the storage box 31, a lubricating liquid 33 is adsorbed in the sponge 32, an extrusion rod 34 is telescopically inserted into the bottom surface of the storage box 31, and a plurality of through holes 35 are formed in the bottom surface of the storage box 31.

In use, referring to fig. 3 to 4, when the threaded rod 227 moves upward, the top end of the threaded rod 227 pushes the extruding rod 34 to move into the cavity of the storage box 31, so that the extruding rod 34 extrudes the sponge 32 in the cavity of the storage box 31, the lubricating fluid 33 absorbed in the sponge 32 is extruded out, and the lubricating fluid 33 flows to the surface of the threaded rod 227 through the through hole 35 for lubricating.

Referring to fig. 3 to 4, a brush 4 is sleeved on the lower end of the internal thread sleeve 225, and bristles of the brush 4 are attached to the threaded rod 227 for cleaning impurities on the surface of the threaded rod 227.

In use, referring to fig. 3 to 4, since a portion of the threaded rod 227 needs to be exposed to air, the surface of the threaded rod 227 is inevitably contaminated with impurities, and when the threaded rod 227 moves upwards into the internal thread sleeve 225, the impurities on the surface of the threaded rod 227 are cleaned by the brush 4, so as to prevent the use of the device from being affected.

The working principle is as follows:

before use, the fracturing rubber cylinder 1 is put into a well, two ends of a protective cover 221 are clamped at the well mouth of the well, a motor of a driving source 21 is started to drive a worm wheel 222 arranged at the output end of the motor to rotate along with the worm wheel 222, the worm wheel 222 drives a worm 223 meshed with the worm wheel to rotate along with the worm wheel, the worm 223 drives first bevel gears 224 fixed at two ends of the worm wheel to rotate, the first bevel gears 224 drive second bevel gears 226 meshed with the worm wheel to rotate, the second bevel gears 226 drive an internal thread sleeve 225 to rotate along with the worm wheel, the internal thread sleeve 225 drives a threaded rod 227 connected with the internal thread sleeve to move downwards, and the threaded rod 227 drives the fracturing rubber cylinder 1 to move downwards to a preset position;

when the threaded rod 227 moves upwards, the top end of the threaded rod 227 pushes the extrusion rod 34 to move towards the cavity of the storage box 31, so that the extrusion rod 34 extrudes the sponge 32 in the cavity of the storage box 31, the lubricating liquid 33 absorbed in the sponge 32 is extruded out, and the lubricating liquid 33 flows to the surface of the threaded rod 227 through the through hole 35 to perform lubricating work.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fracturing device is adopted to effectual coal bed gas of increasing split which characterized in that: including fracturing packing element (1) to and can dismantle the water injection pipe of connecting in fracturing packing element (1) surface, fracturing packing element (1) top is provided with elevating system (2) that are used for driving its removal along the axis of ordinates direction, elevating system (2) include driving source (21) to and install drive assembly (22) at driving source (21) output, drive assembly (22) are connected with the relative both sides of fracturing packing element (1).

2. The coal bed gas exploitation fracturing device with good fracturing increasing effect of claim 1, wherein: the driving source (21) is a motor, and the motor is powered by an external power supply.

3. The coal bed gas exploitation fracturing device with good fracturing increasing effect of claim 2 is characterized in that: the drive assembly (22) comprises a protective cover (221), the motor is installed on the rear side surface of the protective cover (221), the output end of the motor is provided with a rotating shaft, one end of the rotating shaft extends into the protective cover (221), a worm wheel (222) is fixed to the extending end of the rotating shaft, a worm (223) meshed with the worm wheel (222) is connected in the protective cover (221) in a rotating mode, first bevel gears (224) are fixedly connected to two ends of the worm (223), two internal thread sleeves (225) are connected in the protective cover (221) in a rotating mode, second bevel gears (226) meshed with the two first bevel gears (224) are sleeved on the surface of the two internal thread sleeves (225), one end of each internal thread sleeve (225) extends to the lower portion of the protective cover (221), the extending end of each internal thread sleeve is connected with a threaded rod (227), and the threaded rods (227) are fixedly connected to two opposite sides of the fracturing rubber cylinder (1) respectively, the two threaded rods (227) are fixedly connected through a limiting rod (228).

4. The coal bed gas exploitation fracturing device with good fracturing increasing effect of claim 3, wherein: and a lubricating mechanism (3) for lubricating is arranged in the internal thread sleeve (225).

5. The coal bed gas exploitation fracturing device with good fracturing effect of claim 4, wherein: lubricating mechanism (3) are including fixing storage box (31) at internal thread cover (225) inner wall top surface, it is filled with sponge (32) to store box (31) intussuseption, the absorption has lubricating liquid (33) in sponge (32), it has extrusion ram (34) to store box (31) bottom surface flexible the grafting, and stores box (31) bottom surface and has seted up a plurality of through-hole (35).

6. The coal bed gas exploitation fracturing device with good fracturing increasing effect of claim 3, wherein: the lower end of the internal thread sleeve (225) is sleeved with a brush (4), and bristles of the brush (4) are attached to the threaded rod (227) and used for cleaning impurities on the surface of the threaded rod (227).