Electric acid-proof liquid supply skid

Abstract

This invention relates to the field of fracturing equipment technology, specifically to an electric acid-resistant supply skid, comprising a base frame, a top frame mounted on the base frame via a support frame, a plunger pump and an electric drive system for driving the fracturing pump mounted on the upper side of the base frame, a supply pipe connected to the inlet of the plunger pump, and a high-pressure manifold connected to the outlet of the plunger pump, a longitudinal rail horizontally arranged on the lower side of the top frame, a transverse rail perpendicular to the longitudinal rail arranged below the longitudinal rail, the upper side of the transverse rail slidably connected to the longitudinal rail, and a movable seat slidably connected to the transverse rail arranged below the transverse rail, with a robotic arm arranged below the movable seat, a camera unit and a detachably mounted sensor assembly or maintenance assembly mounted on the free end of the robotic arm, and a first vibration sensor mounted on both the plunger pump and the high-pressure manifold. This invention addresses the problem of existing technologies that rely solely on a few sensors to monitor skid-mounted equipment, resulting in overly simplistic functionality.

Description

Technical Field

[0001] This invention relates to the field of fracturing equipment technology, specifically to an electric acid-resistant supply skid. Background Technology

[0002] Skid-mounted hydrant supply systems integrate pipelines, equipment, pumps, control cabinets, and electrical instruments into a single unit according to a specific process flow. This unit is fixed to a chassis made of angle steel or I-beams, or other structures, via welding or bolting—essentially a skid. Valves, pumps, and other equipment are pre-installed as a single unit, eliminating the need for additional valves and instruments when connecting to other systems. It's a mechatronic system that can be directly used simply by connecting pipelines. The production and assembly of skid-mounted equipment are completed in the factory, minimizing on-site installation work. Only interface pipelines and external electrical connections are required for operation. The integrated functional components on a single base facilitate relocation, require minimal space, and significantly alleviate technical challenges on construction sites.

[0003] Fracturing technology is one of the key technologies for the extraction of shale oil and shale gas. It is used to achieve high-level reservoir stimulation, transforming shale oil from a state that is not commercially viable under natural conditions into a state that can achieve industrial oil production. Fracturing technology uses skid-mounted acid injection equipment to pressurize the acidizing medium and inject it into the oil well through a high-pressure discharge pipe to carry out acid fracturing operations.

[0004] During the use of skid-mounted equipment, in order to ensure the safety of liquid supply, staff need to conduct regular or irregular inspections of the skid-mounted equipment to observe its working status. However, this inspection method may result in problems not being detected in a timely manner. Existing technologies also use some sensors to monitor skid-mounted equipment, but their functions are too limited. Summary of the Invention

[0005] The purpose of this invention is to provide an electric acid-resistant supply skid that solves the problem that the existing technology only uses some sensors to monitor the skid-mounted equipment, resulting in overly limited functionality.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An electric acid-resistant supply skid includes a base frame, a top frame mounted on the top of the base frame via a support frame, a plunger pump and an electric drive system for driving the fracturing pump mounted on the upper side of the base frame, a supply pipe connected to the inlet of the plunger pump and a high-pressure manifold connected to the outlet of the plunger pump, a longitudinal rail horizontally mounted on the lower side of the top frame, a transverse rail perpendicular to the longitudinal rail mounted on the lower side of the longitudinal rail, a first drive assembly for driving the transverse rail to move along the longitudinal rail mounted on the longitudinal rail, a movable seat slidably connected to the transverse rail mounted on the lower side of the transverse rail, a second drive assembly for driving it to move along the transverse rail mounted on the movable seat, a robotic arm mounted on the lower side of the movable seat, a camera unit and a sensor assembly or maintenance assembly detachably mounted on the free end of the robotic arm, and a first vibration sensor mounted on both the plunger pump and the high-pressure manifold.

[0007] A further technical solution is that the robotic arm includes a first arm, a second arm, a third arm, and a fourth arm, with the fourth arm being the free end of the robotic arm. The upper end of the first arm is rotatably connected to the lower side of the moving base along a vertical axis. The lower end of the first arm is rotatably connected to one end of the second arm along a horizontal axis. The other end of the second arm is rotatably connected to one end of the third arm along a horizontal axis. The other end of the third arm is rotatably connected to the fourth arm along a horizontal axis. A first servo motor is installed at the other end of the fourth arm. A connector for connecting a sensor assembly or a maintenance assembly is installed on the output shaft of the first servo motor. A rotating ring groove is recessed around the outer wall of the fourth arm, and a rotating ring is rotatably fitted inside the rotating ring groove. A drive bar hole penetrating inside and outside is provided around the outer wall of the rotating ring. An external gear ring is provided at the bottom of the rotating ring groove corresponding to the drive bar hole. A second servo motor is installed on the outer wall of the rotating ring. A first gear is installed on the output shaft of the second servo motor. The first gear passes through the drive bar hole and meshes with the external gear ring. A camera unit is installed on the outer wall of the rotating ring.

[0008] A further technical solution is to install an electric telescopic rod on the outer wall of the rotating ring, with a third servo motor installed at the telescopic end of the electric telescopic rod, and the camera unit installed on the output shaft of the third servo motor.

[0009] A further technical solution is to install a filter on the liquid supply pipe, and to install a first valve at both ends of the liquid supply pipe on the filter. The sensor assembly includes a second vibration sensor and a temperature sensor, and a liquid pressure gauge is installed on the high-pressure manifold.

[0010] A further technical solution is that the filter includes a filter tube, inside which is a first filter screen plate that slopes to the right from bottom to top. A collection pipe is located on the lower side of the filter tube to the right of the first filter screen plate. The connection between the collection pipe and the filter tube is located near the lower end of the first filter screen plate. A funnel is located inside the collection pipe, with the upper edge of the funnel connected to the inner wall of the collection pipe. A concentrator is vertically located at the lower end of the funnel. A second filter screen plate is located around the outer wall of the lower end of the concentrator. A suction pump is located on the outer wall of the collection pipe. The inlet of the suction pump is connected to the collection pipe above the second filter screen plate, and the outlet of the suction pump is connected to the filter tube to the right of the collection pipe. A detachable cap is installed at the lower end of the collection pipe. The outer wall of the collection pipe is connected to the concentrator via an operating pipe. A second valve is located on the concentrator at the position corresponding to the operating pipe.

[0011] A further technical solution is that a rinsing pipe is provided on the upper side of the filter tube to the left of the first filter screen plate. The rinsing pipe is located close to the first filter screen plate. Two layers of first elastic membranes are spaced apart inside the rinsing pipe. A piston is slidably installed above the two layers of first elastic membranes inside the rinsing pipe. The top of the rinsing pipe is sealed by a sealing plate. The sealing plate is provided with sliding holes that pass through the upper and lower sides. A sliding rod is slidably installed inside the sliding holes. The upper end of the sliding rod is placed on the upper side of the sealing plate. A first spring is sleeved between the piston and the sealing plate. A pressure sensor is provided between the two layers of first elastic membranes in the rinsing pipe. A buffer tube is provided on the outer wall of the collecting pipe. A second elastic membrane is provided inside the buffer tube.

[0012] A further technical solution is that the connector includes a mounting plate and a clamping rod. Two clamping plates are spaced apart at the end of the output shaft of the first servo motor. Each clamping plate has a through-hole that runs through both sides. An electromagnet is slidably installed in each of the two locking holes. The ends of the two electromagnets that are far apart from each other are placed outside the locking holes and are connected to a top plate. A second spring is sleeved between the electromagnet and the top plate. A clamping rod is provided on one side of the mounting plate. The clamping rod has a clamping groove that matches the electromagnet on both sides. An adsorption block is provided at the bottom of the clamping groove. The sensor assembly or maintenance assembly is installed on the other side of the mounting plate.

[0013] A further technical solution is that the repair component includes a lever and a wrench. One end of the wrench is provided with an elongated hole, and the other end is provided with a wrench opening. The lever is slidably connected to the elongated hole. Limit blocks are provided on both sides of the wrench. The cross-section of the lever is polygonal.

[0014] A further technical solution is that the outlet of the plunger pump is set upwards, a first flange is set around the outlet of the plunger pump, a second flange is set on the high-pressure manifold, the first flange and the second flange are connected by bolts, and the first flange is provided with a countersunk hole for fitting the bolt head.

[0015] A further technical solution is that the first drive assembly includes a fourth servo motor and a first rack. The first rack is mounted on the lower side of the top frame and is arranged parallel to the longitudinal rail. The fourth servo motor is mounted on the upper side of the transverse rail. The output shaft of the fourth servo motor is equipped with a second gear, which meshes with the first rack. The second drive assembly includes a fifth servo motor and a second rack. The second rack is mounted on the lower side of the transverse rail and is arranged parallel to the transverse rail. The fifth servo motor is mounted on a movable base. The output shaft of the fifth servo motor is equipped with a third gear, which meshes with the second rack.

[0016] Compared with existing technologies, the advantages of this invention are: by setting a first vibration sensor, the vibration of the high-pressure manifold can be monitored, making it easier for operators to promptly determine whether the high-pressure manifold and plunger pump are functioning properly. By setting horizontal and vertical rails, the moving base can freely move the robotic arm under the top frame, thereby moving the sensor assembly and camera unit to any position on the supply skid for detection. This allows for assessment of the connection between the high-pressure manifold and the plunger pump, checking for loosening or even acid leakage. If leakage occurs, the robotic arm can be used to install maintenance components, and with the assistance of the camera unit, the problematic area can be repaired. This application enables remote monitoring and remote maintenance, ensuring that the supply skid can be monitored at any time and addressed promptly to prevent acid leakage and potentially more serious accidents. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an electric acid-resistant liquid supply skid according to the present invention.

[0018] Figure 2 This is a schematic diagram of a robotic arm for an electric acid-resistant liquid supply skid according to the present invention.

[0019] Figure 3 This is a schematic diagram of a filter for an electric acid-resistant liquid supply skid according to the present invention.

[0020] Figure 4 This is a schematic cross-sectional view of the fourth arm of an electric acid-resistant liquid supply skid according to the present invention.

[0021] Figure 5 This is a schematic diagram showing the connection between the sensor assembly and the first servo motor of an electric acid-resistant liquid supply skid according to the present invention.

[0022] Figure 6 This is a schematic diagram of the maintenance component of an electric acid-resistant supply skid of the present invention placed on a horizontal plate.

[0023] Icons: 1-Base frame, 2-Support frame, 3-Top frame, 4-Plunger pump, 5-Electric drive system, 6-Supply pipe, 7-High-pressure manifold, 8-Longitudinal rail, 9-Horizontal rail, 10-Moving seat, 11-Robotic arm, 12-Camera unit, 13-First vibration sensor, 14-First arm, 15-Second arm, 16-Third arm, 17-Fourth arm, 18-First servo motor, 19-Rotating ring groove, 20-Rotating ring, 21-Drive bar hole, 22-External gear ring, 23-Second servo motor, 24-First gear, 25-Electric telescopic rod, 26-Third servo motor, 27-First valve, 28-Second vibration sensor, 29-Temperature sensor, 30-Filter tube, 31-First filter screen, 32-Collection tube, 33-Function funnel, 34-Concentrating tube, 35-Second filter screen, 36-Suction pump. 37-Sealing cap, 38-Operating tube, 39-Second valve, 40-Flushing tube, 41-First elastic diaphragm, 42-Piston, 43-Sealing plate, 44-Sliding hole, 45-Slide rod, 47-First spring, 48-Pressure sensor, 49-Buffer tube, 50-Second elastic diaphragm, 51-Mounting plate, 52-Clamping rod, 53-Clamping plate, 54-Lock hole, 55-Electromagnet, 56-Top plate, 57-Second spring, 58-Clamping groove, 59-Toggle rod, 60-Wrench, 61-Limiting block, 62-Elongated hole, 63-Opening, 64-First flange, 65-Second flange, 66-Bolt, 67-Fourth servo motor, 68-First rack, 69-Second gear, 70-Fifth servo motor, 71-Second rack, 72-Third gear, 73-Placement plate, 74-Horizontal plate, 75-Slot. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0025] Figures 1 to 6 The image shows an embodiment of the present invention.

[0026] Example: An electric acid-resistant supply skid includes a base frame 1, a top frame 3 mounted on the top of the base frame 1 via a support frame 2, a plunger pump 4 and an electric drive system 5 for driving the fracturing pump mounted on the upper side of the base frame 1, a supply pipe 6 connected to the inlet of the plunger pump 4, and a high-pressure manifold 7 connected to the outlet of the plunger pump 4, a longitudinal rail 8 horizontally mounted on the lower side of the top frame 3, a transverse rail 9 perpendicular to the longitudinal rail 8 mounted on the lower side of the longitudinal rail 8, the upper side of the transverse rail 9 slidably connected to the longitudinal rail 8, a first drive assembly for driving the transverse rail 9 to move along the longitudinal rail 8 mounted on the longitudinal rail 8, a movable seat 10 slidably connected to the transverse rail 9 mounted on the lower side of the transverse rail 9, a second drive assembly for driving it to move along the transverse rail 9 mounted on the movable seat 10, a robotic arm 11 mounted on the lower side of the movable seat 10, a camera unit 12 and a sensor assembly or maintenance assembly detachably mounted on the free end of the robotic arm 11, and a first vibration sensor 13 mounted on both the plunger pump 4 and the high-pressure manifold 7. The supply pipe 6 connects the sand mixing equipment and the acid supply skid. During acid injection, the acid supply skid uses suction to draw acid from the acid tank and supply it to the plunger pump 4. After acid injection is complete, the sand mixing equipment supplies fracturing fluid to the plunger pump 4. A first vibration sensor 13 monitors the vibration of the high-pressure manifold 7, allowing operators to promptly assess the operational status of both the high-pressure manifold 7 and the plunger pump 4. The horizontal rail 9 and vertical rail 8 allow the moving base 10 to freely move the robotic arm 11 under the top frame 3, enabling the sensor assembly and camera unit 12 to be moved to any position on the supply skid for inspection. This allows for assessment of the connection between the high-pressure manifold 7 and the plunger pump 4, identifying any loosening or acid leakage. If leakage occurs, the robotic arm 11 can be used to install maintenance components, and with the assistance of the camera unit 12, the problematic area can be repaired. This application enables remote monitoring and maintenance, ensuring the supply skid can be monitored at any time and addressed promptly to prevent acid leaks and potentially more serious accidents. The electric drive system 5 includes at least a power supply unit, an engine, and a gearbox power supply to provide power to the engine. The engine, through the gearbox, provides power to the plunger pump 4. In this application, components that come into direct contact with acid, such as the plunger pump 4, high-pressure manifold 7, and liquid supply pipe 6, are made of acid-resistant materials to prevent corrosion from prolonged use.

[0027] The robotic arm 11 includes a first arm 14, a second arm 15, a third arm 16, and a fourth arm 17. The fourth arm 17 is the free end of the robotic arm 11. The upper end of the first arm 14 is rotatably connected to the lower side of the movable base 10 along the vertical axis. The lower end of the first arm 14 is rotatably connected to one end of the second arm 15 along the horizontal axis. The other end of the second arm 15 is rotatably connected to one end of the third arm 16 along the horizontal axis. The other end of the third arm 16 is rotatably connected to the fourth arm 17 along the horizontal axis. A first servo motor 18 is mounted on the other end of the fourth arm 17. A connection for... The sensor assembly or maintenance assembly connector has a rotating ring groove 19 recessed around the outer wall of the fourth arm 17. A rotating ring 20 is rotatably fitted inside the rotating ring groove 19. A drive bar hole 21 penetrating the inside and outside is provided around the outer wall of the rotating ring 20. An external gear ring 22 is provided at the bottom of the rotating ring groove 19 corresponding to the drive bar hole 21. A second servo motor 23 is mounted on the outer wall of the rotating ring 20. A first gear 24 is mounted on the output shaft of the second servo motor 23. The first gear 24 passes through the drive bar hole 21 and meshes with the external gear ring 22. The camera unit 12 is mounted on the outer wall of the rotating ring 20. By setting the first arm 14, second arm 15, third arm 16 and fourth arm 17, the first servo motor 18 can be driven to perform multi-angle intelligent adjustment, thereby enabling the sensor assembly or maintenance assembly to monitor or maintain various positions on the liquid supply skid. With the cooperation of the rotating ring 20 and the rotating ring groove 19, the camera unit 12 can be driven by the second servo motor 23 to rotate around the second servo motor 23. This makes it easy to adjust the position of the camera unit 12 on the second servo motor 23. This allows the position of the camera unit 12 to be adjusted when the robotic arm 11 moves or during inspection and maintenance, avoiding collisions with the pipelines on the liquid supply skid. It also allows the operator to find the best shooting angle to control the robotic arm 11 in real time using the captured images.

[0028] An electric telescopic rod 25 is provided on the outer wall of the rotating ring 20. A third servo motor 26 is installed at the telescopic end of the electric telescopic rod 25, and the camera unit 12 is mounted on the output shaft of the third servo motor 26. By setting the electric telescopic rod 25 and the third servo motor 26 in cooperation, the angle and position of the camera unit 12 can be further adjusted.

[0029] A filter is installed on the liquid supply pipe 6, and a first valve 27 is installed at both ends of the filter. The sensor assembly includes a second vibration sensor 28 and a temperature sensor 29. A liquid pressure gauge is installed on the high-pressure manifold 7.

[0030] The filter includes a filter tube 30, within which a first filter screen 31 is disposed. The first filter screen 31 is inclined to the right from bottom to top. A collection tube 32 is disposed on the lower side of the filter tube 30 to the right of the first filter screen 31. The connection between the collection tube 32 and the filter tube 30 is located near the lower end of the first filter screen 31. A funnel 33 is disposed inside the collection tube 32. The upper edge of the funnel 33 is connected to the inner wall of the collection tube 32. A concentrator 34 is vertically disposed at the lower end of the funnel 33. A second filter screen 35 is installed on the lower outer wall of the plunger pump 4, and a suction pump 36 is installed on the outer wall of the collection pipe 32. The inlet end of the suction pump 36 is connected to the collection pipe 32 above the second filter screen 35, and the outlet end of the suction pump 36 is connected to the filter pipe 30 on the right side of the collection pipe 32. A sealing cap 37 is detachably installed on the lower end of the collection pipe 32. The outer wall of the collection pipe 32 is connected to the central pipe 34 through the operating pipe 38. A second valve 39 is installed on the central pipe 34 at the position corresponding to the operating pipe 38. To prevent sand with an excessively large diameter from entering the plunger pump 4, causing excessive wear and reducing its service life. During filtration, the acid solution passes through the first filter plate 31. Larger diameter sand particles in the acid solution are blocked by the first filter plate 31. Utilizing the inclined structure of the first filter plate 31 and the intermittent supply of the plunger pump 4, during the gap when the supply between the plunger pump 4 and the supply pipe 6 stops, the larger diameter sand particles fall downwards into the collection pipe 32. After entering the collection pipe 32, they pass through the funnel 33 into the concentrator pipe 34, and then into the lower side of the second filter plate 35. Furthermore, with the assistance of the suction pump 36, the acid solution at the connection between the collection pipe 32 and the filter pipe 30 can be accelerated into the collection pipe 32, thereby carrying the larger diameter sand particles into the collection pipe 32. By setting a second valve 39, the concentrator pipe 34 can be closed. Therefore, when cleaning the sand in the collection pipe 32, the second valve 39 can be closed, and then the sealing cap 37 can be opened. Compared to traditional basket filters, this structure can promptly clean the sand accumulated around the first filter plate, thus greatly extending its service life. Furthermore, it eliminates the need to disassemble the filter tube 30 for cleaning, enabling maintenance without shutting down the machine.

[0031] A flushing pipe 40 is provided on the upper side of the filter pipe 30 to the left of the first filter screen plate 31. The flushing pipe 40 is positioned close to the first filter screen plate 31. Two layers of first elastic membranes 41 are spaced apart inside the flushing pipe 40. A piston 42 is slidably mounted above the two layers of first elastic membranes 41 inside the flushing pipe 40. The top of the flushing pipe 40 is sealed by a sealing plate 43. The sealing plate 43 has sliding holes 44 that extend through both the upper and lower sides. A sliding rod 45 is slidably mounted inside the sliding holes 44. The upper end of the sliding rod 45 is positioned above the sealing plate 43. A first spring 47 is sleeved between the piston 42 and the sealing plate 43. A pressure sensor 48 is provided between the two layers of first elastic membranes 41 in the flushing pipe 40. A buffer pipe 49 is provided on the outer wall of the collection pipe 32. A second elastic membrane 50 is provided inside the buffer pipe 49. For some stubborn sand adhering to the first filter screen plate 31, this application can achieve backwashing during use through the backwashing structure, thereby cleaning the first filter screen plate 31. A clamping groove 58 matching the electromagnet 55 is provided on the upper side of the sliding rod 45, which is positioned above the sealing plate 43. Specifically, when cleaning is required, the mechanical arm 11 clamps the sliding rod 45, causing the piston 42 to move upward. This causes the first elastic membrane 41 to arch upward, drawing acid from the filter tube 30 into the flushing tube 40. During the interval when the plunger pump 4 is not drawing acid, the sliding rod 45 is released, and then, driven by the first spring 47, the piston 42 momentarily impacts downward to cooperate with the first elastic membrane 41, releasing the drawn-in acid into the filter tube 30. The first filter screen 31 is then flushed within the filter tube 30. During flushing, the buffer tube 49 draws in excess acid to prevent backflow of acid from the supply tube 6. The backwashing of this application can be performed as needed, ensuring that the first filter screen 31 maintains optimal filtration at all times and preventing the filter holes on the first filter screen 31 from becoming clogged. The air pressure sensor 48 can monitor the air pressure change between the two first elastic membranes 41. When an abnormal change occurs, it means that at least one of the first elastic membranes 41 has been damaged.

[0032] The connector includes a mounting plate 51 and a clamping rod 52. Two clamping plates 53 are spaced apart at the output shaft end of the first servo motor 18. Each clamping plate 53 has a through-hole 54 on both sides. An electromagnet 55 is slidably installed in the two through-holes 54. The ends of the two electromagnets 55 that are far apart from each other are placed outside the through-holes 54 and connected to a top plate 56. A second spring 57 is sleeved between the electromagnet 55 and the top plate. A clamping rod 52 is provided on one side of the mounting plate 51. The clamping rod 52 has a clamping groove 58 that matches the electromagnet 55 on both sides. An adsorption block is provided at the bottom of the clamping groove 58. The sensor assembly or maintenance assembly is installed on the other side of the mounting plate 51. A placement plate 73 is provided on the support frame 2, and a horizontal plate 74 is provided on the placement plate 73. A slot 75 matching the mounting plate 51 is provided on the upper side of the horizontal plate 74. When the sensor assembly or maintenance assembly is not in use, the mounting plate 51 of the maintenance assembly or sensor assembly is inserted into the slot 75 of the placement plate 73. When needed, the two clamping plates 53 of the first servo motor 18 are placed on both sides of the clamping rod 52, and the two electromagnets 55 are energized to attract the electromagnets 55 to the adsorption block, thus locking the electromagnets 55 into the clamping groove 58, thereby facilitating the movement of the sensor assembly or maintenance assembly.

[0033] The maintenance component includes a lever 59 and a wrench 60. One end of the wrench 60 is provided with an elongated hole 62, and the other end is provided with a wrench 60 opening 63. The lever 59 is slidably connected to the elongated hole 62. Limiting blocks 61 are provided on both sides of the wrench 60. The cross-section of the lever 59 is polygonal.

[0034] The plunger pump 4 has its outlet facing upwards. A first flange 64 is arranged around the outlet of the plunger pump 4, and a second flange 65 is arranged on the high-pressure manifold 7. The first flange 64 and the second flange 65 are connected by bolts 66. The first flange 64 has a countersunk hole for engaging the head of the bolt 66. By providing a countersunk hole, the head of the bolt 66 can be prevented from rotating when the nut is tightened. After the bolt 66 is tightened, a mark is drawn at the position corresponding to the nut and the second flange 65 to determine whether the nut is loose. When the mark is misaligned, the camera unit 12 can automatically alarm by using image recognition technology, or monitoring personnel can determine whether the nut is loose by using the image captured by the camera unit 12. When loosening occurs, the opening 63 on the wrench 60 is driven by the robotic arm 11 to hold the nut and then drive the wrench 60 to rotate, so that the mark is realigned and the nut returns to its initial state, thereby ensuring the sealing and stability of the connection.

[0035] The first drive assembly includes a fourth servo motor 67 and a first rack 68. The first rack 68 is mounted on the lower side of the top frame 3 and is parallel to the longitudinal rail 8. The fourth servo motor 67 is mounted on the upper side of the transverse rail 9. A second gear 69 is mounted on the output shaft of the fourth servo motor 67 and meshes with the first rack 68. The second drive assembly includes a fifth servo motor 70 and a second rack 71. The second rack 71 is mounted on the lower side of the transverse rail 9 and is parallel to the transverse rail 9. The fifth servo motor 70 is mounted on the movable seat 10. A third gear 72 is mounted on the output shaft of the fifth servo motor 70 and meshes with the second rack 71. By driving the second gear 69 with the fourth servo motor 67, the transverse rail 9 can be moved along the length direction of the longitudinal rail 8. By setting the fifth servo motor 70 to drive the third gear 72, the movable seat 10 can be moved along the length direction of the transverse rail 9.

[0036] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. An electric acid-resistant supply skid, characterized in that, The system includes a base frame (1), a top frame (3) is mounted on the top of the base frame (1) via a support frame (2), a plunger pump (4) and an electric drive system (5) for driving the fracturing pump are mounted on the upper side of the base frame (1), a liquid supply pipe (6) is connected to the inlet of the plunger pump (4), a high-pressure manifold (7) is connected to the outlet of the plunger pump (4), a longitudinal rail (8) is horizontally mounted on the lower side of the top frame (3), a transverse rail (9) perpendicular to the longitudinal rail (8) is mounted on the lower side of the longitudinal rail (8), the upper side of the transverse rail (9) is slidably connected to the longitudinal rail (8), and the longitudinal rail (8) is equipped with... A first drive assembly is provided for driving the horizontal rail (9) to move along the longitudinal rail (8). A movable seat (10) is provided on the lower side of the horizontal rail (9) and is slidably connected to the horizontal rail (9). A second drive assembly is provided on the movable seat (10) for driving it to move along the horizontal rail (9). A robotic arm (11) is provided on the lower side of the movable seat (10). A camera unit (12) and a sensor assembly or maintenance assembly are detachably installed on the free end of the robotic arm (11). A first vibration sensor (13) is installed on both the plunger pump (4) and the high-pressure manifold (7).

2. The electric acid-resistant supply skid according to claim 1, characterized in that: The robotic arm (11) includes a first arm (14), a second arm (15), a third arm (16), and a fourth arm (17). The fourth arm (17) is the free end of the robotic arm (11). The upper end of the first arm (14) is rotatably connected to the lower side of the movable seat (10) along the vertical axis. The lower end of the first arm (14) is rotatably connected to one end of the second arm (15) along the horizontal axis. The other end of the second arm (15) is rotatably connected to one end of the third arm (16) along the horizontal axis. The other end of the third arm (16) is rotatably connected to the fourth arm (17) along the horizontal axis. A first servo motor (18) is mounted on the other end of the fourth arm (17). A transmission device is mounted on the output shaft of the first servo motor (18). The sensor assembly or repair assembly connector has a rotating ring groove (19) recessed around the outer wall of the fourth arm (17). A rotating ring (20) is rotatably fitted inside the rotating ring groove (19). A drive bar hole (21) penetrating inside and outside is provided around the outer wall of the rotating ring (20). An external gear ring (22) is provided at the bottom of the rotating ring groove (19) corresponding to the drive bar hole (21). A second servo motor (23) is installed on the outer wall of the rotating ring (20). A first gear (24) is installed on the output shaft of the second servo motor (23). The first gear (24) passes through the drive bar hole (21) and meshes with the external gear ring (22). The camera unit (12) is installed on the outer wall of the rotating ring (20).

3. The electric acid-resistant supply skid according to claim 2, characterized in that: The outer wall of the rotating ring (20) is provided with an electric telescopic rod (25), and the telescopic end of the electric telescopic rod (25) is equipped with a third servo motor (26). The camera unit (12) is mounted on the output shaft of the third servo motor (26).

4. The electric acid-resistant supply skid according to claim 1, characterized in that: The liquid supply pipe (6) is equipped with a filter, and a first valve (27) is provided at both ends of the filter. The sensor assembly includes a second vibration sensor (28) and a temperature sensor (29). A liquid pressure gauge is installed on the high-pressure manifold (7).

5. The electric acid-resistant supply skid according to claim 4, characterized in that: The filter includes a filter tube (30), inside which a first filter screen plate (31) is disposed. The first filter screen plate (31) is inclined to the right from bottom to top. A collection tube (32) is disposed on the lower side of the filter tube (30) to the right of the first filter screen plate (31). The connection between the collection tube (32) and the filter tube (30) is disposed near the lower end of the first filter screen plate (31). A funnel (33) is disposed inside the collection tube (32). The upper edge of the funnel (33) is connected to the inner wall of the collection tube (32). A concentrator (34) is vertically disposed at the lower end of the funnel (33). A concentrator (34) surrounds the concentrator (34). The lower end of the outer wall is provided with a second filter screen plate (35), and the outer wall of the collection pipe (32) is provided with a suction pump (36). The water inlet end of the suction pump (36) is connected to the collection pipe (32) above the second filter screen plate (35). The drain end of the suction pump (36) is connected to the filter pipe (30) on the right side of the collection pipe (32). The lower end of the collection pipe (32) is detachably equipped with a sealing cap (37). The outer wall of the collection pipe (32) is connected to the central pipe (34) through the operating pipe (38). The central pipe (34) is provided with a second valve (39) at the position corresponding to the operating pipe (38).

6. The electric acid-resistant supply skid according to claim 5, characterized in that: A rinsing pipe (40) is provided on the upper side of the filter pipe (30) to the left of the first filter screen plate (31). The rinsing pipe (40) is located close to the first filter screen plate (31). Two layers of first elastic membranes (41) are spaced apart inside the rinsing pipe (40). A piston (42) is slidably arranged above the two layers of first elastic membranes (41) inside the rinsing pipe (40). The top of the rinsing pipe (40) is sealed by a sealing plate (43). A sliding joint is provided on the sealing plate (43) that runs through both the upper and lower sides. The sliding hole (44) has a sliding rod (45) that slides up and down inside it. The upper end of the sliding rod (45) is placed on the upper side of the sealing plate (43). A first spring (47) is sleeved between the piston (42) and the sealing plate (43) on the sliding rod (45). A pressure sensor (48) is provided between two layers of first elastic membranes (41) in the flushing pipe (40). A buffer pipe (49) is provided on the outer wall of the collecting pipe (32). A second elastic membrane (50) is provided inside the buffer pipe (49).

7. The electric acid-resistant supply skid according to claim 2, characterized in that: The connector includes a mounting plate (51) and a clamping rod (52). Two clamping plates (53) are spaced apart at the output shaft end of the first servo motor (18). Both clamping plates (53) are provided with locking holes (54) that pass through both sides. Electromagnets (55) are slidably arranged in the two locking holes (54). The ends of the two electromagnets (55) that are far apart from each other are placed outside the locking holes (54) and connected to a top plate (56). A second spring (57) is sleeved between the clamping plate (53) and the top plate of the electromagnet (55). The clamping rod (52) is provided on one side of the mounting plate (51). The clamping rod (52) is recessed on both sides of the clamping rod (52) and is provided with clamping grooves (58) that match the electromagnets (55). An adsorption block is provided at the bottom of the clamping groove (58). The sensor assembly or maintenance assembly is installed on the other side of the mounting plate (51).

8. The electric acid-resistant supply skid according to claim 1, characterized in that: The repair assembly includes a lever (59) and a wrench (60). One end of the wrench (60) is provided with an elongated hole (62), and the other end is provided with a wrench (60) opening (63). The lever (59) is slidably connected to the elongated hole (62). Limiting blocks (61) are provided on both sides of the wrench (60) of the lever (59). The cross-section of the lever (59) is polygonal.

9. The electric acid-resistant supply skid according to claim 1, characterized in that: The outlet of the plunger pump (4) is arranged facing upwards, and a first flange (64) is arranged around the outlet of the plunger pump (4). A second flange (65) is arranged on the high pressure manifold (7). The first flange (64) and the second flange (65) are connected by bolts (66). The first flange (64) is provided with a countersunk hole for fitting the head of the bolt (66).

10. The electric acid-resistant supply skid according to claim 1, characterized in that: The first drive assembly includes a fourth servo motor (67) and a first rack (68). The first rack (68) is mounted on the lower side of the top frame (3) and is arranged parallel to the longitudinal rail (8). The fourth servo motor (67) is mounted on the upper side of the transverse rail (9). The output shaft of the fourth servo motor (67) is equipped with a second gear (69), which meshes with the first rack (68). The second drive assembly includes a fifth servo motor (70) and a second rack (71). The second rack (71) is mounted on the lower side of the transverse rail (9) and is arranged parallel to the transverse rail (9). The fifth servo motor (70) is mounted on the moving seat (10). The output shaft of the fifth servo motor (70) is equipped with a third gear (72), which meshes with the second rack (71).

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