Environment-friendly fracturing pump

Abstract

The invention discloses an environment-friendly fracturing pump, which belongs to the technical field of oil and gas production equipment, and comprises a fracturing pump body, a liquid inlet pipe and a liquid outlet pipe which are arranged on the fracturing pump body, and a circulating box arranged on the liquid inlet pipe, and further comprises a sealing assembly which is arranged in the liquid outlet pipe and is used for adjusting the opening and closing of the liquid outlet pipe, comprising a first sealing plate and a second sealing plate which are rotationally arranged in a liquid outlet pipe, a liquid pumping assembly which is arranged on the liquid outlet pipe, arranged in a circulation box and used for backflow treatment of fracturing fluid and comprises a filter plate arranged in the circulation box, and when a piston rod moves, the filter plate is driven to filter the fracturing fluid in a shaking mode, and the filtered fracturing fluid flows back into a liquid inlet pipe. The recycling of resources is further guaranteed, meanwhile, the pollution of liquid to the environment and the geology is prevented, and the environmental protection effect is further improved when the equipment is used.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil and gas production equipment, and particularly relates to an environment-friendly fracturing pump. BACKGROUND

[0002] In the hydraulic fracturing process of oil and gas production, the fracturing pump as the core oil and gas production power equipment directly affects the environmental protection and economy of the operation. The design concept of the traditional fracturing pump has been limited to the function of 'one-way injection' for a long time, and only the high-pressure plunger system can force the fracturing fluid to be pumped into the oil and gas reservoir, but there is no recycling mechanism for the post-operation flowback fluid. This structural defect becomes the main cause of environmental pollution. The fracturing fluid contains a large amount of chemical additives, including acid substances with strong corrosion, high-molecular polymers difficult to biodegrade, and heavy metal stabilizers. After the operation is completed, about 30%-50% of the fracturing fluid will flow out in the form of flowback fluid. The traditional fracturing pump cannot directly discharge it to the open-air storage pool or transport it out by the tank truck due to the lack of a matching recycling device. If the waste liquid is not properly treated, it will pollute the groundwater system through soil penetration, and the volatile organic compounds in it will also form toxic gases, aggravating air pollution. In addition, tens of thousands of cubic meters of fresh water are consumed in fracturing, and the effective components in the flowback fluid are not reused, which not only increases the pressure of water resource exploitation, but also aggravates carbon emissions due to the consumption of additional energy (such as transportation, distillation and desalination) for waste liquid treatment. SUMMARY

[0003] In view of the problems in the prior art, the application provides an environment-friendly fracturing pump, which solves the problem that the existing equipment cannot recycle and use the liquid during use, resulting in liquid pollution and environmental protection.

[0004] The application is implemented as follows: the environment-friendly fracturing pump comprises a fracturing pump body, a liquid inlet pipe and a liquid outlet pipe arranged on the fracturing pump body, and a circulating box arranged on the liquid inlet pipe, and further comprises: A sealing assembly is arranged in the liquid outlet pipe and used for adjusting the opening and closing of the liquid outlet pipe, and comprises a first sealing plate and a second sealing plate rotatably arranged in the liquid outlet pipe. A liquid pumping assembly is arranged on the liquid outlet pipe and used for the backflow of the fracturing fluid, and comprises a piston cylinder arranged through the liquid outlet pipe, a piston rod slidably arranged in the piston cylinder, and a piston plate arranged at the end of the piston rod, and the circulating box and the piston cylinder are mutually penetrated. A treatment assembly is arranged in the circulating box and used for the backflow treatment of the fracturing fluid, and comprises a filter plate arranged in the circulating box, and when the piston rod moves, the filter plate is driven to shake and filter the fracturing fluid, and the filtered fracturing fluid flows back to the liquid inlet pipe.

[0005] As preferred of the present application, the liquid outlet pipe is T-shaped, and the piston cylinder is arranged through one end, and the first sealing plate and the second sealing plate are arranged rotatably on the vertical end and the horizontal end of the T-shaped pipe respectively.

[0006] As preferred of the present application, the sealing assembly further comprises adjusting rods arranged rotatably on the liquid outlet pipe for angle adjustment of the first sealing plate and the second sealing plate, and the two adjusting rods are rotatably connected.

[0007] As preferred of the present application, the liquid pumping assembly further comprises a first spring sleeved on the piston rod for resetting of the piston rod, and the piston rod is driven by a moving assembly arranged on the piston cylinder.

[0008] As preferred of the present application, the moving assembly comprises a rack fixedly arranged on the piston rod, and a half gear engaged with the rack.

[0009] As preferred of the present application, the piston plate is concave, and a rotating plate is arranged rotatably in the concave part of the piston plate, and the concave part is arranged on the side close to the piston rod.

[0010] As preferred of the present application, the processing assembly further comprises two pairs of second springs fixedly arranged in the circulating box, the second springs are fixedly arranged between the two pairs of second springs, two cams are arranged rotatably in the circulating box, and the cams are in movable contact with the bottom of the filter plate, the two pairs of second springs are different in length, so that the filter plate is arranged obliquely.

[0011] As preferred of the present application, two cavities are arranged in the circulating box, the filter plate is arranged in one of the cavities, a one-way valve is arranged between the two cavities, the liquid inlet pipe is arranged through the other cavity, and the bottom of the cavity in which the filter plate is arranged is arranged obliquely.

[0012] As preferred of the present application, the driving assembly is arranged on the circulating box for adjusting the angle of the first sealing plate and the second sealing plate, and for driving the half gear to rotate, comprising a driving motor mounted on the circulating box, an electric telescopic rod is mounted on the output end of the driving motor, a gear box is arranged on the circulating box, the output end of the gear box is in transmission connection with the cam, a rotating shaft is in transmission connection with the input end of the gear box, the rotating shaft is arranged above and below the adjusting rod, the driving motor passes through the rotating shaft, and is in movable clamping connection with the rotating shaft and the adjusting rod respectively.

[0013] This invention, by altering the angles of the second and first sealing plates, allows the fracturing fluid to be returned through the piston cylinder after use. Simultaneously, the returned fluid is filtered through the inlet pipe in the circulation tank, allowing it to flow back into the inlet pipe, thus achieving fluid recycling. This prevents the unrecoverable fluid from polluting the geological formation and causing environmental pollution. Furthermore, the combination of the pumping and processing components during operation not only reduces equipment usage, making it more energy-efficient, but also effectively treats the fluid, reducing subsequent processing steps and making the equipment more environmentally friendly and energy-saving. This also prevents resource waste and further improves the equipment's practicality and ease of use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the front view structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure from the lower side view of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure from a partial right-side view of the present invention.

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure from a partial left-side view of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the cross-sectional structure from a partial left-side view of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the internal structure of the invention from a partial left-side view.

[0018] In the picture: 1. Circulation tank. 2. Fracturing pump body. 3. Inlet pipe. 4. Outlet pipe. 5. First sealing plate. 6. Second sealing plate. 7. Piston cylinder. 8. Piston rod. 9. Piston plate. 10. Rotating plate. 11. First spring. 12. Rack. 13. Filter plate. 14. Second spring. 15. Cam. 16. Check valve. 17. Half gear. 18. Adjusting rod. 19. Drive motor. 20. Electric telescopic rod. Detailed Implementation

[0019] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0020] The structure of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1 to 6As shown, the environment-friendly fracturing pump provided by the embodiment of the application comprises a fracturing pump body 2, a liquid inlet pipe 3 and a liquid outlet pipe 4 arranged on the fracturing pump body 2, and a circulating tank 1 arranged on the liquid inlet pipe 3, and further comprises: A sealing assembly arranged in the liquid outlet pipe 4 is used for adjusting the opening and closing of the liquid outlet pipe 4, and comprises a first sealing plate 5 and a second sealing plate 6 rotatably arranged in the liquid outlet pipe 4.

[0022] A liquid pumping assembly arranged on the liquid outlet pipe 4 is used for backflow of the fracturing fluid, and comprises a piston cylinder 7 arranged through the liquid outlet pipe 4, a piston rod 8 slidably arranged in the piston cylinder 7, and a piston plate 9 arranged at an end of the piston rod 8, and the circulating tank 1 and the piston cylinder 7 are mutually through.

[0023] A processing assembly arranged in the circulating tank 1 is used for backflow treatment of the fracturing fluid, and comprises a filter plate 13 arranged in the circulating tank 1, and when the piston rod 8 moves, the filter plate 13 is driven to shake and filter the fracturing fluid, and the filtered fracturing fluid flows back into the liquid inlet pipe 3.

[0024] Reference Figure 1 By placing the fracturing pump body 2 at a suitable position, the fracturing fluid can be pumped out of the liquid outlet pipe 4 and into the hole to fully fracture the geology in the hole, and when the hole fracturing is completed, the angle of the first sealing plate 5 and the second sealing plate 6 can be adjusted to close the liquid outlet pipe 4 while keeping the piston cylinder 7 through the hole. Figure 5 Figure 4 When the hole fracturing is completed, the angle of the first sealing plate 5 and the second sealing plate 6 can be adjusted to close the liquid outlet pipe 4 while keeping the piston cylinder 7 through the hole, and because a large amount of gas pressure exists in the hole during fracturing, the fracturing fluid will gradually surge up, and when the gas pressure in the hole is small, the fracturing fluid may not be completely surged up, at which time the piston rod 8 is driven to move, so that the piston rod 8 drives the piston plate 9 to form negative pressure in the piston cylinder 7, thereby quickly pumping out the fracturing fluid in the hole, and when the fracturing fluid is pumped out, the liquid will enter the circulating tank 1 in the circulating tank 1, be filtered by the filter plate 13, and be injected into the cavity where the liquid inlet pipe 3 is located through the one-way valve 16, and the liquid can be recycled for the next fracturing, thereby performing the cycle work.

[0025] ​The application changes the angle of the second sealing plate 6 and the first sealing plate 5, so that the fracturing fluid can be recycled through the piston cylinder 7 after use, and the returned fluid is filtered through the filter plate 13 in the circulating box 1, and then flows into the liquid inlet pipe 3, thereby realizing the recycling of the liquid, avoiding the pollution of the liquid to the geology and the environment, and improving the practicability and use convenience of the equipment.

[0026] Preferably, the liquid outlet pipe 4 is T-shaped, and the piston cylinder 7 is arranged through one end thereof, and the first sealing plate 5 and the second sealing plate 6 are arranged rotatably at the vertical end and the horizontal end of the T-shaped pipe, respectively.

[0027] Reference Figure 5 By rotating the first sealing plate 5 and the second sealing plate 6, the angle thereof is changed, so that the circulating box 1 and the liquid inlet pipe 3 are communicated, and the piston cylinder 7 and the liquid outlet pipe 4 are communicated, so that the liquid can be recycled through the piston cylinder 7 after the fracturing pump body 2 is used, and then the liquid is delivered to the liquid inlet pipe 3 again, thereby realizing the recycling and reuse of the liquid, and further improving the energy saving and environmental protection of the equipment in use, and reducing the recycling and treatment of the liquid.

[0028] Preferably, the sealing assembly further comprises an adjusting rod 18 rotatably arranged on the liquid outlet pipe 4 and used for adjusting the angle of the first sealing plate 5 and the second sealing plate 6, and the two adjusting rods 18 are rotatably connected. Reference Figure 5 The second sealing plate 6 and the first sealing plate 5 are adjusted and rotated through the adjusting rod 18, and the two adjusting rods 18 are drivingly connected, so that when the adjusting rod 18 is rotated, the angle of the second sealing plate 6 and the first sealing plate 5 is changed, thereby realizing the communication between the liquid outlet pipe 4 and the fracturing pump body 2, and the communication between the piston cylinder 7 and the liquid inlet pipe 3, and facilitating the injection and recycling of the liquid.

[0029] Preferably, the liquid pumping assembly further comprises a first spring 11 sleeved on the piston rod 8 and used for resetting the piston rod 8, and the piston rod 8 is driven through a moving assembly arranged on the piston cylinder 7. Reference Figure 5When the piston rod 8 slides in the piston barrel 7, the piston rod 8 gradually moves to the outside of the piston barrel 7, and the piston rod 8 is elongated, when the piston rod 8 moves to a certain distance, the elastic force of the first spring 11 pushes the piston rod 8 to gradually reset, so that the piston rod 8 forms a periodic circular motion in the piston barrel 7, thereby effectively generating negative pressure in the piston barrel 7, effectively pumping the liquid in the hole, reducing the use of other equipment, and making the equipment more energy-saving and environment-friendly when in use.

[0030] As preferred, the moving assembly comprises a rack 12 fixedly arranged on the piston rod 8, and a half gear 17 engaged with the rack 12. Reference Figure 5 When the half gear 17 is engaged with the rack 12, the half gear 17 drives the rack 12 to move, so that the rack 12 drives the piston rod 8 to move, when the teeth on the half gear 17 are disengaged from the rack 12, the elastic force of the first spring 11 pushes the piston rod 8 to reset and move, and through the repeated engagement of the rack 12 and the half gear 17, the periodic circular motion is effectively ensured, and the liquid pumping effect of the equipment is ensured.

[0031] As preferred, the piston plate 9 is concave, and a rotating plate 10 is rotatably arranged in the concave portion of the piston plate 9, and the concave portion is arranged on the side close to the piston rod 8. Reference Figure 5 And Figure 6 When the piston rod 8 moves to the side of the second sealing plate 6, since the rotating plate 10 is rotatably arranged in the concave portion, the rotating plate 10 will gradually rotate and move away from the piston plate 9, while keeping the piston plate 9 in an open state, and in the movement process of the piston plate 9, the liquid enters the piston barrel 7 through the piston plate 9, when the piston rod 8 moves away from the second sealing plate 6, the liquid is located on the side of the rotating plate 10, and the pressure of the liquid pushes the rotating plate 10 to seal the piston plate 9, so that the rotating plate 10 and the piston plate 9 form an integral whole, and the negative pressure generated by the piston plate 9 can pump the liquid in the hole, and the liquid in the piston barrel 7 is extruded and discharged into the circulating box 1, and filtered by the circulating box 1, thereby forming the effect of pumping and pushing, so that the liquid can be quickly discharged and discharged, reducing the use of the equipment, and further improving the energy-saving and environment-friendly effect.

[0032] As preferred, the processing assembly further comprises two pairs of second springs 14 fixedly arranged in the circulating box 1, the second spring 14 is fixedly arranged between the two pairs of second springs 14, two cams 15 are rotatably arranged in the circulating box 1, and the cams 15 are in movable contact with the bottom of the filter plate 13, the lengths of the two pairs of second springs 14 are different, so that the filter plate 13 is arranged in an inclined manner. Reference Figure 4When the fracturing fluid flows back into the circulating tank 1, the liquid falls on the filter plate 13, and with the movement of the piston rod 8, the cam 15 is driven to rotate, and when the cam 15 rotates, the protruding position of the cam 15 gradually extrudes the filter plate 13, so that the filter plate 13 is lifted, and when the filter plate 13 is lifted, the second spring 14 at the bottom of the filter plate 13 is gradually stretched, and when the protruding point of the cam 15 is away from the filter plate 13, the elastic force of the second spring 14 acts on the filter plate 13, so that the filter plate 13 is shaken, and through the shaking of the filter plate 13, the fracturing fluid can be fully filtered and treated, so that the sand and mixture in the fracturing fluid are treated and decomposed, thereby effectively ensuring the cleanliness of the backflow liquid and preventing the filter plate 13 from being blocked.

[0033] As preferred, two cavities are formed in the circulating tank 1, the filter plate 13 is arranged in one of the cavities, a one-way valve 16 is arranged between the two cavities, the liquid inlet pipe 3 is arranged through the other cavity, and the bottom of the cavity where the filter plate 13 is arranged is inclined. Reference Figure 4 When the filter plate 13 completes the filtering of the liquid, the liquid is stored in the cavity, and due to the inclined arrangement of the bottom of the cavity, the liquid gradually flows downward, and when the liquid is stored to a certain amount, the one-way valve 16 is opened, so that the liquid passes through the one-way valve 16 and enters the other cavity, and when the circulating tank 1 works again, the liquid in the cavity can be fully pressed out, so that the fracturing work can be performed again.

[0034] As preferred, a driving assembly is arranged on the circulating tank 1, which is used to adjust the angle of the first sealing plate 5 and the second sealing plate 6, and is used to drive the half gear 17 to rotate, and the driving assembly comprises a driving motor 19 mounted on the circulating tank 1, an electric telescopic rod 20 mounted on the output end of the driving motor 19, a gear box arranged on the circulating tank 1, and an output end of the gear box in transmission connection with the cam 15, a rotating shaft in transmission connection with the output end of the gear box, and the rotating shaft and the adjusting rod 18 being arranged above and below, the driving motor 19 penetrating through the rotating shaft and being in movable clamping connection with the rotating shaft and the adjusting rod 18. Reference Figure 3 When the electric telescopic rod 20 is elongated, the electric telescopic rod 20 is clamped with the adjusting rod 18, at this time, the driving motor 19 drives the adjusting rod 18 to rotate through the electric telescopic rod 20, and when the adjusting rod 18 rotates, the adjusting rod 18 can effectively drive the first sealing plate 5 and the second sealing plate 6 to adjust, so as to change the communication direction of the liquid outlet pipe 4, and when the electric telescopic rod 20 is shortened, the electric telescopic rod 20 is clamped with the rotating shaft, at this time, when the driving motor 19 drives the electric telescopic rod 20 to rotate, the electric telescopic rod 20 drives the gear box to work through the rotating shaft, and the gear box drives the half gear 17 and the cam 15 to work, thereby realizing the liquid extraction and vibration filtering of the equipment at the same time, so as to further reduce the use of the equipment, reduce the energy loss, and prevent the use of energy from causing environmental pollution.

[0035] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions from each other, without necessarily requiring or implying any actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly fracturing pump, comprising a fracturing pump body (2), an inlet pipe (3) and an outlet pipe (4) disposed on the fracturing pump body (2), and a circulation tank (1) disposed on the inlet pipe (3), characterized in that: Also include: The sealing assembly is arranged in the liquid outlet pipe (4), and is used for adjusting the opening and closing of the liquid outlet pipe (4), comprising a first sealing plate (5) and a second sealing plate (6) arranged in the liquid outlet pipe (4); The pumping assembly is arranged on the liquid outlet pipe (4) and is used for the backflow of the fracturing fluid, comprising a piston cylinder (7) arranged through the liquid outlet pipe (4), a piston rod (8) slidably arranged in the piston cylinder (7), and a piston plate (9) arranged at the end of the piston rod (8), and the circulating tank (1) and the piston cylinder (7) are mutually penetrated; The processing assembly is arranged in the circulating tank (1) and is used for the backflow treatment of the fracturing fluid, comprising a filter plate (13) arranged in the circulating tank (1), and when the piston rod (8) moves, the filter plate (13) is driven to shake and filter the fracturing fluid, and the filtered fracturing fluid flows back into the liquid inlet pipe (3).

2. The environmentally friendly fracturing pump of claim 1, wherein: The liquid outlet pipe (4) is T-shaped, and the piston cylinder (7) is arranged through one end, and the first sealing plate (5) and the second sealing plate (6) are arranged in the vertical end and the horizontal end of the T-shaped respectively.

3. The environmentally friendly fracturing pump of claim 2, wherein: The sealing assembly further comprises an adjusting rod (18) arranged in rotation on the liquid outlet pipe (4) for angle adjustment of the first sealing plate (5) and the second sealing plate (6), and the two adjusting rods (18) are rotationally connected.

4. The environmentally friendly fracturing pump of claim 3, wherein: The pumping assembly further comprises a first spring (11) sleeved on the piston rod (8) for resetting the piston rod (8), and the piston rod (8) is driven by a moving assembly arranged on the piston cylinder (7).

5. The environmentally friendly fracturing pump of claim 4, wherein: The moving assembly comprises a rack (12) fixedly arranged on the piston rod (8), and a half gear (17) engaged with the rack (12).

6. The environmentally friendly fracturing pump of claim 5, wherein: The piston plate (9) is concave, and a rotating plate (10) is arranged in the concave of the piston plate (9), and the concave is arranged on the side close to the piston rod (8).

7. The environmentally friendly fracturing pump of claim 6, wherein: The processing assembly further comprises two pairs of second springs (14) fixedly arranged in the circulating tank (1), the second springs (14) are fixedly arranged between the two pairs of second springs (14), two cams (15) are rotationally arranged in the circulating tank (1), and the cams (15) are in movable contact with the bottom of the filter plate (13), the lengths of the two pairs of second springs (14) are different, so that the filter plate (13) is arranged in an inclined manner.

8. The environmentally friendly fracturing pump of claim 7, wherein: Two cavities are formed in the circulating tank (1), the filter plate (13) is arranged in one of the cavities, a one-way valve (16) is arranged between the two cavities, the liquid inlet pipe (3) is arranged through the other cavity, and the bottom of the cavity where the filter plate (13) is arranged is arranged in an inclined manner.

9. The environmentally friendly fracturing pump of claim 7, wherein: Driving assembly is arranged on circulating tank (1), be used for adjusting the angle of first sealing plate (5) and second sealing plate (6), be used for driving half gear (17) rotation simultaneously, including the driving motor (19) installed on circulating tank (1), the output of driving motor (19) is installed with an electric telescopic rod (20), the circulating tank (1) is provided with a gear box, and the output of gear box is in transmission connection with cam (15), the input of gear box is in transmission connection with a rotating shaft, and the rotating shaft is arranged on the adjusting rod (18) up and down, the driving motor (19) passes through rotating shaft, and is respectively with rotating shaft and adjusting rod (18) movable clamping.

Images