A gas pressurized delivery device for air jet fracturing

Abstract

This application discloses a gas pressurization and delivery device for air jet fracturing, comprising: a tank, a support frame, a fixing block, mounting holes, an upper pipe, reinforcing ribs, a lower pipe, a flange, a hydraulic cylinder, a fixed base, a control cabinet, a movable pipe, a first piston disc, a first sealing ring, a pressure sensor, a connecting pipe, an electrically controlled valve, a second piston disc, a second sealing ring, a sealing plate, a rubber plug, a positioning pin, a positioning hole, a first spring, a guide sleeve, a side rod, a guide rod, a pressure plate, a sealing gasket, a retaining ring, a second spring, a top block, a first guide groove, a guide rod, a connecting plate, a lifting mechanism, a fixing kit, a top shell, a servo motor, a worm gear, a rotating shaft, a worm wheel, a square rod, a threaded rod, a permanent magnet, an electromagnet, a carrier bar, a second guide groove, and a telescopic component. The advantage of this application is that it can perform gas pressurization and delivery, and the pressurization intensity can be adjusted to allow the gas to be pressurized to different pressure levels.

Description

Technical Field

[0001] This invention relates to a gas boosting and conveying device, specifically a gas boosting and conveying device for air jet fracturing, belonging to the field of gas boosting and conveying technology. Background Technology

[0002] In air jet fracturing, the transported gas needs to be pressurized to increase the overall gas pressure and create a pressurized airflow.

[0003] The existing patent document "CN101566175B Gas Pressurization Device" can pressurize gas, increasing low-pressure gas to high-pressure gas; however, it has the problem of difficulty in adjusting the pressurization level, making it difficult to adjust the pressurization to different pressure levels for output. Currently, there is no gas pressurization and delivery device for air jet fracturing. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this application provides a gas pressurization and delivery device for air jet fracturing. Gas enters through an upper pipe and then through a movable pipe into a tank, specifically at the bottom of a first piston disc. A hydraulic cylinder provides downward pressure, compressing the gas in the tank and increasing its pressure. When the pressure reaches the load pressure provided by the pressure relief assembly, the gas is discharged and delivered through the lower pipe. Simultaneously, the load in the pressure relief assembly can be adjusted, thereby regulating the pressurization intensity and allowing the gas to be pressurized to different levels. This addresses the problem of difficulty in adjusting the gas pressurization level in existing technologies.

[0005] To further address the issue of limited pressure adjustment methods and difficulty in adjusting the load of the pressure relief component under different load conditions, a lifting mechanism is used to drive the guide sleeve up and down, thereby adjusting the tension of the second spring. This allows for adjustment of the pressure plate's pressure on the retaining ring, and thus, load adjustment. An electromagnet and a permanent magnet are incorporated; by changing the electromagnet's magnetic force, the repulsive force on the permanent magnet is altered, further adjusting the pressure plate's pressure on the retaining ring and ultimately, load adjustment.

[0006] Furthermore, by setting up telescopic components, the electromagnet can be moved, which can change the distance between the electromagnet and the permanent magnet, thereby adjusting the magnitude of the repulsive force of the permanent magnet. This allows for the adjustment of the pressure of the pressure plate on the retaining ring, and further enables the adjustment of the load.

[0007] According to one aspect of this application, a gas pressurization and delivery device for air jet fracturing is provided, comprising: a tank, a support frame, a fixing block, an upper pipe, a connecting pipe, a pressure relief component, an electrically controlled valve, a lower pipe, a flange, a reinforcing rib, a hydraulic cylinder, a first piston disc, a first sealing ring, a movable pipe, a second piston disc, a second sealing ring, a sealing plate, and a rubber plug; wherein, multiple sets of the support frame are fixedly installed around the outer wall of the tank, and a fixing block is fixedly installed at the bottom of the support frame, with multiple mounting holes at the bottom of the fixing block; the upper pipe is fixedly connected to the center of the top of the tank, and the bottom end of the upper pipe is connected to the top of the tank; a connecting pipe is fixedly installed at the bottom of the tank, and a pressure relief component is provided inside the connecting pipe, with the top end of the connecting pipe connected to the bottom of the tank; an electrically controlled valve is fixedly sleeved at the bottom end of the connecting pipe, and the lower pipe is fixedly sleeved at the bottom end of the electrically controlled valve; the top of the upper pipe... A flange is fixedly installed at both the end of the upper pipe and the end of the lower pipe away from the electrically controlled valve. Multiple sets of reinforcing ribs arranged in a ring array are fixedly installed between the bottom outer wall of the upper pipe and the top outer wall of the tank. Multiple hydraulic cylinders are fixedly installed at the top of the tank. A first piston disc is fixedly installed at the bottom of the output shaft of each hydraulic cylinder. A first sealing ring is fixedly fitted on the cylindrical surface of the first piston disc. The outer ring of the first sealing ring is in close contact with the inner wall of the tank. A through hole is opened in the middle of the first piston disc. The wall of the through hole is seamlessly welded to the bottom of the movable pipe. A second piston disc is fixedly installed at the top of the movable pipe. A second sealing ring is fixedly fitted on the cylindrical surface of the second piston disc. The outer ring of the second sealing ring is in close contact with the inner wall of the upper pipe. A sealing plate is elastically installed at the bottom of the through hole. A rubber plug is fixedly installed at the top center of the sealing plate. The rubber plug is fitted and connected to the bottom of the through hole.

[0008] Furthermore, a plurality of positioning posts arranged in a circular array are fixedly installed around the top of the sealing plate. The positioning posts are vertically arranged and are connected to the positioning holes opened at the bottom of the first piston plate with clearance fit. A first spring is provided at the top of the positioning post, the bottom end of the first spring is fixedly connected to the top end of the positioning post, and the top end of the first spring is fixedly connected to the wall of the positioning hole.

[0009] Furthermore, the pressure relief assembly includes: a guide sleeve, side rods, a guide rod, a pressure plate, a sealing gasket, a retaining ring, a second spring, and a top block. Side rods are fixedly installed on both outer walls of the guide sleeve. The guide sleeve is connected to the guide rod with a clearance fit. The bottom end of the guide rod is fixedly connected to the pressure plate. A sealing gasket is fixedly installed on the top edge of the pressure plate. The sealing gasket contacts the bottom of the retaining ring, and the outer ring of the retaining ring is seamlessly welded to the inner wall of the connecting pipe. A top block is fixedly installed on the top end of the guide rod. The second spring is sleeved on the guide rod. One end of the second spring is fixedly connected to the guide sleeve, and the other end of the second spring is fixedly connected to the pressure plate.

[0010] Furthermore, the end of the side rod away from the guide sleeve is slidably connected to the first guide groove opened on the inner wall of the connecting pipe. Both sides of the bottom of the connecting pipe are provided with connecting holes, which communicate with the first guide groove. The side rod is fixedly connected to a vertically arranged guide rod, which is connected to the connecting hole with a clearance fit. A sealing layer is provided on the hole wall of the connecting hole. The bottom end of the guide rod is fixedly connected to a connecting plate, which is connected to the output end of the lifting mechanism. The lifting mechanism is fixedly installed on the outer wall of the connecting pipe.

[0011] Furthermore, the lifting mechanism includes: a fixing kit, a square rod, and a threaded rod. The fixing kit is fixedly installed on the outer wall of the connecting pipe. A drive assembly is fixedly installed at the top of the fixing kit. The output shaft end of the drive assembly is fixedly connected to the square rod. A square hole is opened in the middle of the threaded rod. The square rod is clearance-fitted with the square hole. A threaded hole is opened in the middle of the fixing kit. The threaded rod is threadedly connected to the threaded hole. The bottom end of the threaded rod is rotatably connected to the top of the connecting plate.

[0012] Furthermore, the drive assembly includes: a top shell, a servo motor, a worm gear, a rotating shaft, and a worm wheel. The top shell is fixedly mounted on top of the fixed assembly. A servo motor is fixedly mounted on one side of the top shell. A worm gear is fixedly mounted on the output shaft end of the servo motor. The worm gear is rotatably mounted inside the top shell. A rotating shaft is also rotatably mounted inside the top shell. A worm wheel is fixedly sleeved on the rotating shaft. The worm wheel meshes with the worm gear. The bottom end of the rotating shaft is fixedly connected to one end of a square rod.

[0013] Furthermore, a permanent magnet is fixedly installed at the bottom center of the pressure plate, an electromagnet is provided at the bottom of the permanent magnet, a carrier bar is fixedly installed at the bottom of the electromagnet, and the carrier bar is slidably connected to the second guide groove opened on the inner wall of the connecting pipe.

[0014] Furthermore, a telescopic component is provided at the top of the second guide groove. The telescopic component is fixedly installed inside the pipe wall of the connecting pipe. The output end of the telescopic component extends into the second guide groove and is fixedly connected to the carrier strip.

[0015] Furthermore, the bottom of the first piston disc is provided with a plurality of evenly distributed grooves, and a pressure sensor is fixedly installed in the grooves.

[0016] Furthermore, a fixed base is fixedly installed on one side of the outer wall of the tank, and a control cabinet is fixedly installed on one side of the fixed base. The control cabinet is electrically connected to the hydraulic cylinder, pressure sensor, electric valve, electromagnet, telescopic component and servo motor.

[0017] The advantages of this application are: the conveying device is used for gas pressurization. Gas enters through the upper pipe and then enters the tank through the movable pipe, specifically at the bottom of the first piston disc. Then, the downward pressure of the hydraulic cylinder provides drive to compress the gas in the tank, thereby increasing its pressure. When the pressure relief component provides the load pressure, it can be discharged and conveyed out through the lower pipe.

[0018] The load in the pressure relief assembly can be adjusted, thereby adjusting the pressure boosting intensity and allowing the gas to be pressurized to different pressure levels. Specifically, the guide sleeve is driven to move up and down through a lifting mechanism, which in turn adjusts the tension of the second spring, thereby adjusting the pressure of the pressure plate on the retaining ring and thus adjusting the load.

[0019] An electromagnet and a permanent magnet were further added. By changing the magnetic force of the electromagnet, the repulsive force on the permanent magnet was changed, thereby adjusting the pressure of the pressure plate on the retaining ring and further adjusting the load.

[0020] Furthermore, by setting up telescopic components, the electromagnet can be moved, which can change the distance between the electromagnet and the permanent magnet, thereby adjusting the magnitude of the repulsive force of the permanent magnet. This allows for the adjustment of the pressure of the pressure plate on the retaining ring, and further enables the adjustment of the load.

[0021] In summary, the entire device can provide gas with varying degrees of pressurization and delivery capabilities. Attached Figure Description

[0022] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0023] Figure 1 This is a schematic diagram of a gas pressurization and delivery device for air jet fracturing according to an embodiment of this application;

[0024] Figure 2 yes Figure 1 The diagram shows the internal structure of the tank and the upper pipe in the embodiment shown.

[0025] Figure 3 yes Figure 2 An enlarged structural diagram of part A in the embodiment shown;

[0026] Figure 4 yes Figure 2 An enlarged structural diagram of part B in the embodiment shown;

[0027] Figure 5 yes Figure 1 The diagram shows the structure of the pressure relief assembly and connecting pipe in the embodiment shown.

[0028] Figure 6 yes Figure 1 The diagram shown illustrates the distribution of guide rods and the position of the carrier strips in the embodiment.

[0029] Figure 7 yes Figure 1 The diagram shows a schematic representation of the carrier strip installation in the embodiment shown.

[0030] Figure 8 yes Figure 1 A schematic diagram of the cross-section of the lifting mechanism in the embodiment shown;

[0031] Figure 9 yes Figure 1 The schematic diagrams of the cross-sections of the square rod and the threaded rod in the embodiments shown are as follows;

[0032] Figure 10 yes Figure 1 A schematic diagram illustrating the working principle of the embodiment shown.

[0033] The meanings of the reference numerals in the figure are as follows: 1. Tank body; 2. Support frame; 3. Fixing block; 4. Mounting hole; 5. Upper pipe body; 6. Reinforcing rib plate; 7. Lower pipe body; 8. Flange; 9. Hydraulic cylinder; 10. Fixed seat; 11. Control cabinet; 12. Movable pipe; 13. First piston disc; 14. First sealing ring; 15. Pressure sensor; 16. Connecting pipe; 17. Electrically controlled valve; 18. Second piston disc; 19. Second sealing ring; 20. Sealing plate; 21. Rubber plug; 22. Positioning pin; 23. Positioning hole; 24. First spring; 25. 16. Guide sleeve; 27. Side rod; 28. Guide rod; 29. ​​Pressure plate; 30. Sealing gasket; 31. Retaining ring; 32. Second spring; 33. Top block; 34. First guide groove; 35. Guide rod; 36. Connecting plate; 37. Lifting mechanism; 38. Fixing kit; 39. Top shell; 30. Servo motor; 31. Worm gear; 32. Rotating shaft; 33. Worm wheel; 34. Square rod; 35. Threaded rod; 36. Permanent magnet; 37. Electromagnet; 38. Carrier bar; 49. Second guide groove; 40. Telescopic component. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0037] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0038] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] Reference Figures 1 to 10 A gas pressurization and delivery device for air jet fracturing includes: a tank body 1, a support frame 2, a fixing block 3, an upper pipe body 5, a connecting pipe 16, a pressure relief assembly, an electrically controlled valve 17, a lower pipe body 7, a flange 8, a reinforcing rib 6, a hydraulic cylinder 9, a first piston disc 13, a first sealing ring 14, a movable pipe 12, a second piston disc 18, a second sealing ring 19, a sealing plate 20, and a rubber plug 21.

[0041] like Figure 1 As shown, in a specific embodiment, multiple sets of support frames 2 are fixedly installed around the outer wall of the tank body 1. A fixing block 3 is fixedly installed at the bottom of the support frame 2. Multiple mounting holes 4 are provided at the bottom of the fixing block 3 to provide a position for the overall installation and fixing.

[0042] The upper pipe 5 is fixedly connected to the top center of the tank 1, and the bottom end of the upper pipe 5 is connected to the top of the tank 1. A connecting pipe 16 is fixedly installed at the bottom of the tank 1. A pressure relief component is provided inside the connecting pipe 16, and the top end of the connecting pipe 16 is connected to the bottom of the tank 1. The pressurized gas is discharged through the pressure relief component.

[0043] An electrically controlled valve 17 is fixedly sleeved at the bottom end of the connecting pipe 16, and a lower pipe body 7 is fixedly sleeved at the bottom end of the electrically controlled valve 17. The electrically controlled valve 17 is used for opening and closing control.

[0044] Flanges 8 are fixedly installed at the top of the upper pipe body 5 and at the end of the lower pipe body 7 away from the electric control valve 17. Multiple sets of reinforcing ribs 6 arranged in a ring array are fixedly installed between the bottom outer wall of the upper pipe body 5 and the top outer wall of the tank body 1.

[0045] Multiple hydraulic cylinders 9 are fixedly installed on the top of the tank body 1. A first piston disc 13 is fixedly installed at the bottom end of the output shaft of the hydraulic cylinder 9. A first sealing ring 14 is fixedly sleeved on the cylindrical surface of the first piston disc 13. The outer ring of the first sealing ring 14 is in close contact with the inner wall of the tank body 1. A through hole is opened in the middle of the first piston disc 13. The wall of the through hole is seamlessly welded to the bottom end of the movable tube 12. A second piston disc 18 is fixedly installed at the top end of the movable tube 12. A second sealing ring 19 is fixedly sleeved on the cylindrical surface of the second piston disc 18. The outer ring of the second sealing ring 19 is in close contact with the inner wall of the upper tube body 5. A sealing plate 20 is elastically installed at the bottom of the through hole. A rubber plug 21 is fixedly installed at the top center of the sealing plate 20. The rubber plug 21 is fitted and connected to the bottom end of the through hole. The extension and retraction of the hydraulic cylinders 9 provide drive to realize air intake and pressurized exhaust.

[0046] like Figure 4 As shown, a plurality of positioning posts 22 arranged in a circular array are fixedly installed around the top perimeter of the sealing plate 20. The positioning posts 22 are vertically arranged and are connected to the positioning holes 23 opened at the bottom of the first piston plate 13 with clearance fit. A first spring 24 is provided at the top of the positioning post 22. The bottom end of the first spring 24 is fixedly connected to the top end of the positioning post 22, and the top end of the first spring 24 is fixedly connected to the wall of the positioning hole 23, thereby realizing the elastic installation of the sealing plate 20 and achieving positioning guidance through the positioning posts 22 and the positioning holes 23.

[0047] like Figure 5 As shown, the pressure relief assembly includes: a guide sleeve 25, a side rod 26, a guide rod 27, a pressure plate 28, a sealing gasket 29, a retaining ring 30, a second spring 31, and a top block 32. Side rods 26 are fixedly installed on both outer walls of the guide sleeve 25. The guide sleeve 25 is connected to the guide rod 27 with a clearance fit. The bottom end of the guide rod 27 is fixedly connected to the pressure plate 28. A sealing gasket 29 is fixedly installed on the top edge of the pressure plate 28. The sealing gasket 29 contacts the bottom of the retaining ring 30, and the outer ring of the retaining ring 30 is seamlessly welded to the inner wall of the connecting pipe 16. A top block 32 is fixedly installed on the top end of the guide rod 27. The second spring 31 is sleeved on the guide rod 27. One end of the second spring 31 is fixedly connected to the guide sleeve 25, and the other end is fixedly connected to the pressure plate 28. Air pressure provides downward pressure to the pressure plate 28, causing the pressure plate 28 to descend and separate from the retaining ring 30, thus relieving pressure.

[0048] like Figure 5 , Figure 8 and Figure 9As shown, the end of the side rod 26 away from the guide sleeve 25 is slidably connected to the first guide groove 33 opened on the inner wall of the connecting pipe 16. Both sides of the bottom of the connecting pipe 16 have connecting holes that communicate with the first guide groove 33. A vertically arranged guide rod 34 is fixedly connected to the side rod 26. The guide rod 34 is clearance-fitted with the connecting hole, and a sealing layer is provided on the hole wall. The bottom end of the guide rod 34 is fixedly connected to a connecting plate 35, which is connected to the output end of the lifting mechanism 36. The lifting mechanism 36 is fixedly installed on the outer wall of the connecting pipe 16. The lifting mechanism 36 includes: a fixing kit 3601, a square rod 3607, and a threaded rod 3608. The fixing kit 3601 is fixed... Mounted on the outer wall of the connecting pipe 16, a drive assembly is fixedly mounted on the top of the fixing kit 3601. A square rod 3607 is fixedly connected to the output shaft end of the drive assembly. A square hole is opened in the middle of the threaded rod 3608, and the square rod 3607 is clearance-fitted with the square hole. A threaded hole is opened in the middle of the fixing kit 3601, and the threaded rod 3608 is threadedly connected to the threaded hole. The bottom end of the threaded rod 3608 is rotatably connected to the top of the connecting plate 35. The drive assembly includes: a top shell 3602, a servo motor 3603, a worm gear 3604, a rotating shaft 3605, and a worm wheel 3606. The top shell 3602 is fixedly mounted above the fixing kit 3601, and one side of the top shell 3602 is fixedly mounted on... The device is equipped with a servo motor 3603, and a worm gear 3604 is fixedly mounted on the output shaft end of the servo motor 3603. The worm gear 3604 is rotatably mounted inside the top shell 3602. A rotating shaft 3605 is also rotatably mounted inside the top shell 3602. A worm wheel 3606 is fixedly sleeved on the rotating shaft 3605. The worm wheel 3606 meshes with the worm gear 3604. The bottom end of the rotating shaft 3605 is fixedly connected to one end of a square rod 3607. When adjusting the tension of the second spring 31, the servo motor 3603 drives the worm gear 3604 to rotate. Through the meshing transmission between the worm gear 3604 and the worm wheel 3606, the rotating shaft 3605 and the square rod 3607 can rotate together. The threaded rod 3608 rotates around the threaded hole, allowing it to rise and fall. The square rod 3607 is connected to the square hole in the threaded rod 3608 with a clearance fit, allowing them to slide. The square rod 3607 is not affected by the rise and fall of the threaded rod 3608. The threaded rod 3608 drives the connecting plate 35, guide rod 34, side rod 26, and guide sleeve 25 to move up and down together. It is guided by the side rod 26 and the first guide groove 33. By changing the height of the guide sleeve 25, the height position of the top of the second spring 31 is changed. Since the bottom of the second spring 31 is connected to the pressure plate 28, the pressure plate 28 is blocked by the retaining ring 30 and cannot change its position, thus changing the stretch of the second spring 31.

[0049] like Figure 5 and Figure 7 As shown, a permanent magnet 37 is fixedly installed at the bottom center of the pressure plate 28. An electromagnet 38 is provided at the bottom of the permanent magnet 37, and a carrier bar 39 is fixedly installed at the bottom of the electromagnet 38. The carrier bar 39 is slidably connected to a second guide groove 40 opened on the inner wall of the connecting pipe 16. A telescopic member 41 is provided at the top of the second guide groove 40. The telescopic member 41 is fixedly installed inside the pipe wall of the connecting pipe 16. The output end of the telescopic member 41 extends into the second guide groove 40, and the output end of the telescopic member 41 is fixedly connected to the carrier bar 39. When adjusting the distance between the electromagnet 38 and the permanent magnet 37, the telescopic member 41 provides up and down driving for the carrier bar 39 through its extension and retraction. Through the guidance of the second slide groove, the height of the electromagnet 38 can be adjusted, thereby changing the distance between the electromagnet 38 and the permanent magnet 37. Furthermore, by changing the current, the magnetic force of the electromagnet 38 can be adjusted, thereby also adjusting the pressure of the pressure plate 28 on the retaining ring 30.

[0050] The bottom of the first piston disc 13 is provided with a plurality of evenly distributed grooves, and a pressure sensor 15 is fixedly installed in the grooves. The pressure sensor 15 is used to sense air pressure data, transmit it to the control cabinet 11, process it, and then display it on the display screen on the control cabinet 11.

[0051] A mounting base 10 is fixedly installed on one side of the outer wall of the tank body 1. A control cabinet 11 is fixedly installed on one side of the mounting base 10. The control cabinet 11 is electrically connected to the hydraulic cylinder 9, pressure sensor 15, electric valve 17, electromagnet 38, telescopic component 41, and servo motor 3603. The control cabinet 11 is used for the control of the entire device. The control cabinet 11 has a controller, which can be a single-chip microcomputer controller, for control. The control cabinet 11 has control buttons and a touch screen on the outside for display and manual operation.

[0052] Instructions for use: Before use, the hydraulic cylinder 9 is in a fully extended state, with the first piston disc 13 located at the bottom of the tank 1. The upper pipe 5 is connected to the external air inlet pipe via the flange 8, and the lower pipe 7 is connected to the external air outlet pipe via the flange 8.

[0053] Gas is input through the upper tube 5 and enters the movable tube 12, then enters the through hole in the middle of the first piston disc 13, thereby providing air pressure to the top of the rubber plug 21, increasing the air pressure at the top of the sealing plate 20. This causes the hydraulic cylinder 9 to contract, which in turn drives the first piston disc 13 to move upward. The space at the bottom of the first piston disc 13 is pressurized, creating a negative pressure, which reduces the air pressure at the bottom of the sealing plate 20. A pressure difference is formed between the top and bottom of the sealing plate 20, causing the sealing plate 20 to move downward. During the downward movement, the positioning pin 22 and the positioning hole 23 guide the movement, while simultaneously stretching the first spring 24. The rubber plug 21 separates from the through hole, releasing the seal at the bottom of the through hole, allowing gas to enter the space at the bottom of the first piston disc 13 through the through hole, thus achieving air intake. When the first piston disc 13 moves, the second piston disc 18 moves within the upper tube 5, providing a seal through the second sealing ring 19 during movement. When the first piston disc 13 moves, a seal is provided through the first sealing ring 14.

[0054] After air intake, the hydraulic cylinder 9 extends, driving the first piston disc 13 downward to compress the gas at the bottom of the first piston disc 13 and increase the pressure. This increases the air pressure on the pressure plate 28. When the pressure on the top of the pressure plate 28 is greater than the tensile force of the second spring 31 and the repulsive force generated by the electromagnet 38 on the permanent magnet 37, the pressure plate 28 can move downward, allowing the second spring 31 to continue to be stretched, thereby depressurizing. The pressurized gas then enters the electrically controlled valve 17 through the connecting pipe 16, and is then transported to the external outlet pipe through the lower pipe 7, providing pressurized gas for air jet fracturing.

[0055] The load of the pressure relief component is adjustable, that is, the pressure of the pressure plate 28 on the retaining ring 30 can be adjusted, so that the gas can be pressurized to different pressure levels. Specifically, the tension of the second spring 31 and the distance between the electromagnet 38 and the permanent magnet 37 can be adjusted.

[0056] When adjusting the tension of the second spring 31, the servo motor 3603 drives the worm gear 3604 to rotate. Through the meshing transmission between the worm gear 3604 and the worm wheel 3606, the rotating shaft 3605 and the square rod 3607 can rotate together. The square rod 3607 drives the threaded rod 3608 to rotate about the threaded hole, thereby allowing the threaded rod 3608 to rise and fall. The square rod 3607 is clearance-fitted with the square hole in the threaded rod 3608, allowing them to slide. 07 will not be affected by the lifting and lowering of the threaded rod 3608. The threaded rod 3608 will drive the connecting plate 35, guide rod 34, side rod 26 and guide sleeve 25 to move up and down together. It provides guidance through the side rod 26 and the first guide groove 33. By changing the height of the guide sleeve 25, the height position of the top of the second spring 31 is changed. Since the bottom of the second spring 31 is connected to the pressure plate 28, the pressure plate 28 is blocked by the retaining ring 30 and its position cannot be changed, thereby changing the stretch of the second spring 31.

[0057] When adjusting the distance between electromagnet 38 and permanent magnet 37, the extension and retraction of telescopic component 41 provides up and down drive for carrier bar 39. Guided by the second slide groove, the height of electromagnet 38 can be adjusted, and the distance between electromagnet 38 and permanent magnet 37 can be changed.

[0058] Furthermore, by changing the current, the magnetic force of the electromagnet 38 can be adjusted, thereby also adjusting the pressure of the pressure plate 28 on the retaining ring 30;

[0059] By changing the load on the pressure relief components, the entire device can provide different levels of pressurization for gas delivery.

[0060] Wherein: a small hole can be opened at the top of the tank body 1 to keep atmospheric pressure above the first piston disc 13; the telescopic component 41 can adopt the lifting mechanism 36 in this application to provide telescopic drive, or it can adopt a hydraulic cylinder 9 or a cylinder structure.

[0061] The above description is merely a specific embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gas pressurized delivery device for air-frac, characterized by: include: Tank body (1), support frame (2), fixing block (3), upper pipe body (5), connecting pipe (16), pressure relief assembly, electric control valve (17), lower pipe body (7), flange (8), reinforcing rib plate (6), hydraulic cylinder (9), first piston disc (13), first sealing ring (14), movable pipe (12), second piston disc (18), second sealing ring (19), sealing plate (20) and rubber plug (21); Among them, multiple sets of support frames (2) are fixedly installed around the outer wall of the tank (1), and a fixing block (3) is fixedly installed at the bottom of the support frame (2), and multiple mounting holes (4) are opened at the bottom of the fixing block (3). The upper pipe (5) is fixedly connected to the top center of the tank (1), and the bottom end of the upper pipe (5) is connected to the top of the tank (1). A connecting pipe (16) is fixedly installed at the bottom of the tank (1). A pressure relief component is provided inside the connecting pipe (16), and the top end of the connecting pipe (16) is connected to the bottom of the tank (1). An electric control valve (17) is fixedly sleeved at the bottom end of the connecting pipe (16), and a lower pipe body (7) is fixedly sleeved at the bottom end of the electric control valve (17). Flanges (8) are fixedly installed at the top of the upper pipe (5) and at the end of the lower pipe (7) away from the electric control valve (17). Multiple sets of reinforcing ribs (6) arranged in a ring array are fixedly installed between the bottom outer wall of the upper pipe (5) and the top outer wall of the tank (1). Multiple hydraulic cylinders (9) are fixedly installed on the top of the tank (1). A first piston disc (13) is fixedly installed at the bottom of the output shaft of the hydraulic cylinder (9). A first sealing ring (14) is fixedly sleeved on the cylindrical surface of the first piston disc (13). The outer ring of the first sealing ring (14) is in close contact with the inner wall of the tank (1). A through hole is opened in the middle of the first piston disc (13). The hole wall of the through hole is seamlessly welded to the bottom end of the movable tube (12). A second piston disc (18) is fixedly installed at the top of the movable tube (12). A second sealing ring (19) is fixedly sleeved on the cylindrical surface of the second piston disc (18). The outer ring of the second sealing ring (19) is in close contact with the inner wall of the upper tube (5). A sealing plate (20) is elastically installed at the bottom of the through hole, and a rubber plug (21) is fixedly installed at the top center of the sealing plate (20). The rubber plug (21) is fitted and connected to the bottom end of the through hole. The top of the sealing plate (20) is fixedly installed with a plurality of positioning posts (22) arranged in a ring array. The positioning posts (22) are vertically arranged and are connected to the positioning holes (23) opened at the bottom of the first piston plate (13) with clearance fit. The top of the positioning post (22) is provided with a first spring (24). The bottom end of the first spring (24) is fixedly connected to the top end of the positioning post (22), and the top end of the first spring (24) is fixedly connected to the wall of the positioning hole (23).

2. A gas pressurized delivery device for air-slug fracturing according to claim 1, characterized in that: The pressure relief assembly includes: a guide sleeve (25), a side rod (26), a guide rod (27), a pressure plate (28), a sealing gasket (29), a retaining ring (30), a second spring (31), and a top block (32). The guide sleeve (25) has a side rod (26) fixedly installed on both outer walls. The guide sleeve (25) is connected to the guide rod (27) with a clearance fit. The bottom end of the guide rod (27) is fixedly connected to the pressure plate (28). The top edge of the pressure plate (28) is fixedly installed with a sealing gasket (29). The sealing gasket (29) contacts the bottom of the retaining ring (30), and the outer ring of the retaining ring (30) is seamlessly welded to the inner wall of the connecting pipe (16). The top end of the guide rod (27) is fixedly installed with a top block (32). The second spring (31) is sleeved on the guide rod (27). One end of the second spring (31) is fixedly connected to the guide sleeve (25), and the other end of the second spring (31) is fixedly connected to the pressure plate (28).

3. A gas pressurized delivery device for air-slug fracturing according to claim 2, characterized in that: The end of the side rod (26) away from the guide sleeve (25) is slidably connected to the first guide groove (33) opened on the inner wall of the connecting tube (16). Both sides of the bottom of the connecting tube (16) are provided with connecting holes, which are connected to the first guide groove (33). The side rod (26) is fixedly connected to a vertically arranged guide rod (34). The guide rod (34) is connected to the connecting hole with a clearance fit, and a sealing layer is provided on the hole wall of the connecting hole. The bottom end of the guide rod (34) is fixedly connected to a connecting plate (35). The connecting plate (35) is connected to the output end of the lifting mechanism (36). The lifting mechanism (36) is fixedly installed on the outer wall of the connecting tube (16).

4. The gas pressurization and conveying device for air jet fracturing according to claim 3, characterized in that: The lifting mechanism (36) includes: a fixing kit (3601), a square rod (3607), and a threaded rod (3608). The fixing kit (3601) is fixedly installed on the outer wall of the connecting pipe (16). A drive assembly is fixedly installed at the top of the fixing kit (3601). The output shaft end of the drive assembly is fixedly connected to the square rod (3607). A square hole is opened in the middle of the threaded rod (3608). The square rod (3607) is connected to the square hole with clearance fit. A threaded hole is opened in the middle of the fixing kit (3601). The threaded rod (3608) is threadedly connected to the threaded hole. The bottom end of the threaded rod (3608) is rotatably connected to the top of the connecting plate (35).

5. A gas pressurized delivery device for air-slug fracturing according to claim 4, characterized in that: The drive assembly includes: a top shell (3602), a servo motor (3603), a worm gear (3604), a rotating shaft (3605), and a worm wheel (3606). The top shell (3602) is fixedly mounted on top of the fixing kit (3601). The servo motor (3603) is fixedly mounted on one side of the top shell (3602). The worm gear (3604) is fixedly mounted on the output shaft end of the servo motor (3603). The worm gear (3604) is rotatably mounted inside the top shell (3602). The rotating shaft (3605) is also rotatably mounted inside the top shell (3602). The worm wheel (3606) is fixedly sleeved on the rotating shaft (3605). The worm wheel (3606) meshes with the worm gear (3604). The bottom end of the rotating shaft (3605) is fixedly connected to one end of the square rod (3607).

6. A gas pressurized delivery device for air-slug fracturing according to claim 2, wherein: A permanent magnet (37) is fixedly installed at the bottom center of the pressure plate (28). An electromagnet (38) is provided at the bottom of the permanent magnet (37). A carrier bar (39) is fixedly installed at the bottom of the electromagnet (38). The carrier bar (39) is slidably connected to the second guide groove (40) opened on the inner wall of the connecting pipe (16).

7. A gas pressurized delivery device for air-slug fracturing according to claim 6, characterized in that: The top of the second guide groove (40) is provided with a telescopic member (41), which is fixedly installed inside the pipe wall of the connecting pipe (16). The output end of the telescopic member (41) extends into the second guide groove (40), and the output end of the telescopic member (41) is fixedly connected to the carrier strip (39).

8. A gas pressurized delivery device for air-slug fracturing according to claim 1, wherein: The bottom of the first piston disc (13) is provided with a plurality of evenly distributed grooves, and a pressure sensor (15) is fixedly installed in the grooves.

9. The gas pressurization and delivery device for air jet fracturing according to claim 1, characterized in that: A fixed base (10) is fixedly installed on one side of the outer wall of the tank (1), and a control cabinet (11) is fixedly installed on one side of the fixed base (10). The control cabinet (11) is electrically connected to the hydraulic cylinder (9), pressure sensor (15), electric valve (17), electromagnet (38), telescopic component (41) and servo motor (3603).

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