A portable miniature water injection pump device

Abstract

The utility model relates to a water injection pump technical field, concretely relates to a portable miniature water injection pump device. Including the car body, the first motor and the pump body are fixed to the car body upper end, and the output shaft of first motor and the input shaft of pump body are connected through the shaft coupling, and one side of car body is fixed with the side plate, and the support rod is fixed to the side plate, and the support rod is perpendicular to the side plate, and the second motor is concentrically fixed to the end of support rod away from the side plate, and the output shaft of second motor is concentrically fixed with the turntable, and the central rod is rotatably connected to the turntable, and the long slot is set up on the turntable, and the sliding block is elastically slid in the long slot, and the sliding rod is fixed to the sliding block upper end, and the rotating sleeve is rotatably arranged on the sliding rod outside, and the water inlet hose passes between the rotating sleeve and the central rod. The utility model drives the turntable, sliding rod and rotating sleeve through the second motor, and realizes the automatic winding function of water inlet hose in combination with spring sliding block system.

Description

Technical Field

[0001] This utility model relates to the field of water injection pump technology, specifically to a portable micro water injection pump device. Background Technology

[0002] Miniature water injection pumps for oilfields, with their flexibility, precision, controllability, and adaptability, play a vital role in various stages of oilfield development and production, compensating for the shortcomings of large-scale centralized water injection systems. Their main application scenarios include: 1. Single-well or small-well-group pressurized water injection: This is the primary application of micro-injection pumps. When certain single wells or small-well groups within an oilfield block require additional injection pressure, and the regional centralized injection trunk line pressure cannot meet their specific needs (e.g., low formation permeability, deep injection layers, or contamination or blockage near the injection well), micro-injection pumps are deployed for single-point pressurization. They can precisely adjust and supply pressure according to the actual needs (pressure, displacement) of the well (or well group). This method features low investment, quick results, flexible deployment, strong targeting, and no need to modify large pipeline networks.

[0003] 2. Water injection in peripheral and scattered wells: Providing water injection capacity for oil wells located in remote areas far from the main water injection network. For scattered production wells located on the edge of the oilfield or distributed across a network, laying long-distance high-pressure water injection pipelines is economically unfeasible. By installing miniature water injection pumps on skids at or near these wellheads, and utilizing nearby water sources (treated produced water, clean water, etc.), on-site water intake, pressurization, and injection are achieved. This solves the problem of difficult water injection in peripheral / scattered wells, reduces pipeline construction costs, and improves the development efficiency and recovery rate of these wells.

[0004] 3. Trial Injection and Scheme Testing: Trial water injections are conducted in newly developed blocks, new formations, or before implementing new water injection schemes. Before the formal construction of large-scale water injection stations and pipelines, small-scale water injection tests are performed on target wells using miniature water injection pumps. This is used to test the formation's water absorption capacity, determine reasonable injection pressure, verify the feasibility of the injection scheme, and evaluate the oil enhancement effect. This reduces the risk of large-scale investment, provides direct evidence for optimizing the overall water injection scheme, and the equipment is reusable.

[0005] 4. Well flushing and unclogging serve as auxiliary power sources for well maintenance. When wells are periodically flushed or blocked and require unclogging, a water flow pressure higher than normal is sometimes needed for rinsing. Miniature water pumps can be temporarily connected to provide high-pressure, high-volume (relative to well flushing requirements) water flow, effectively removing impurities, scale, bacterial films, and other blockages from the wellbore and surrounding area. They can be flexibly deployed to provide a dedicated high-pressure water source, avoiding disruption to the stable operation of the main water injection system.

[0006] 5. Enhanced Oil Recovery (EOR) Chemical Injection: Used for injecting chemical flooding fluids used in polymer flooding, surfactant flooding, and alkaline flooding. During EOR operations, precise metering and pressurization of the chemical mother liquor are typically required at the injection station or mixing room. Miniature water injection pumps (especially plunger pumps) are ideal for such applications requiring small displacement, medium to high pressure, and stable and precise injection. They can be driven independently, specifically serving the chemical injection system. They offer high metering accuracy, stable and controllable pressure, avoid excessive shear degradation of the chemical within large pumps, and provide a relatively independent and easily manageable system.

[0007] 6. Peak Shaving and Pressure Supplementation for Water Injection Systems: This function alleviates pressure fluctuations or compensates for insufficient pressure during peak periods in centralized water injection systems. When the overall water injection demand in the block reaches its peak, the pressure at the end of the main pipeline may be insufficient. Miniature water injection pumps can be deployed at nodes with weak pipeline pressure or at the end wellheads to provide localized pressurization, ensuring that all injection wells can complete the injection volume as required. It can also be used to temporarily compensate for pressure gaps during main pump maintenance or malfunctions. This improves system stability, ensures overall water injection effectiveness, and serves as an effective supplement and backup to the main system.

[0008] 7. Water Injection Development of Low-Permeability / Ultra-Low-Permeability Reservoirs: Meeting the special requirements of high injection pressure in low-permeability and ultra-low-permeability reservoirs. Developing low-permeability reservoirs often requires very high injection pressures (potentially much higher than in conventional blocks). Miniature high-pressure water injection pumps (such as high-pressure plunger pumps) can economically and efficiently provide these ultra-high pressures (up to tens or even hundreds of MPa), with dedicated pumps for each well, solving the problem of "injection failure" in low-permeability reservoirs. It is one of the key pieces of equipment for effective water injection development of low-permeability / ultra-low-permeability reservoirs, specifically addressing the high-pressure requirements.

[0009] In the prior art, patent document CN210859253U discloses a coal seam water injection device for mining. This coal seam water injection device effectively moves the water injection pump to a designated location by setting a new type of water injection pump installation and transportation device, thereby improving the mobility of the water injection pump. At the same time, the lifting device can effectively raise the water injection pump to a certain height, improving the flexibility and practicality of the water injection pump in low and complex environments. Meanwhile, the cooling device reduces the internal working temperature of the water injection pump, effectively improving the service life and working efficiency of the water injection pump.

[0010] Patent document CN218325126U discloses an oilfield water injection pump device with a support and fixing structure. This oilfield water injection pump device with a support and fixing structure has a good support and fixing effect on the water injection pump body, facilitates the filtration of the pumped water to be injected, avoids the presence of filter material clogging the water injection pump body, and facilitates the sensing and display of pressure in the oilfield, avoiding excessive or insufficient water injection in the oilfield, and ensuring good water injection pressure maintenance effect.

[0011] In existing technologies, to facilitate the use of miniature water pumps, the inlet of the pump is typically connected to a water inlet hose, which allows for easy connection to a water truck. However, existing miniature water pumps suffer from the problem of inconvenient storage of the water inlet hose. Utility Model Content

[0012] The main purpose of this utility model is to provide a portable miniature water pump device that is easy to move, can filter incoming water, and is easy to store the incoming water hose.

[0013] To achieve the above objectives, the technical solution provided by this utility model is as follows: A portable micro water injection pump device includes a vehicle body. A first motor and a pump body are fixed to the upper end of the vehicle body. The output shaft of the first motor and the input shaft of the pump body are connected by a coupling. A side plate is fixed to one side of the vehicle body, and a support rod is fixed to the side plate. The support rod is perpendicular to the side plate. A second motor is concentrically fixed to the end of the support rod away from the side plate. A turntable is concentrically fixed to the output shaft of the second motor. A central rod is concentrically rotatably connected to the turntable. An elongated groove is formed on the turntable. The length direction of the elongated groove is parallel to the radial direction of the turntable. A slider is elastically slidably arranged in the elongated groove. A sliding rod is fixed to the upper end of the slider. A rotating sleeve is rotatably sleeved on the outside of the sliding rod. A water inlet hose passes between the rotating sleeve and the central rod. A filter box is detachably and fixedly sealed to the inlet of the pump body. A filter unit is arranged in the filter box. An insertion tube is fixedly connected to the upper end of the filter box. An insertion sleeve is fixed to one end of the water inlet hose. The insertion sleeve and the insertion tube are detachably and fixedly sealed.

[0014] Specifically, a spring is installed in the long groove. One end of the spring is fixedly connected to the slider, and the other end of the spring is fixedly connected to the turntable. Under the elastic force of the spring, the slider, the sliding rod, and the rotating sleeve tend to move towards the central rod.

[0015] Specifically, a connecting plate is fixedly connected to the lower end of the filter box, and the connecting plate is detachably and fixedly sealed to the inlet of the pump body.

[0016] Specifically, a pressure sensor is fixed to the upper end of the filter box, and a solenoid valve is fixedly installed on the upper end of the filter box. The pressure sensor, controller, solenoid valve and power supply are electrically connected.

[0017] Specifically, the filtration unit includes a filter plate with an inner hole in the middle. A conical filter cylinder is fixed at the upper end of the filter plate and communicates with the inner hole. Water entering the filter box can pass through the filter plate and the conical filter cylinder and then flow out.

[0018] Specifically, a slot is provided on one side of the filter box, the slot is located above the filter plate, and a sealing plate is detachably and fixedly connected to the outside of the filter box, the sealing plate sealing the slot.

[0019] Specifically, a spiral blade is fixed to the outside of the conical filter cartridge.

[0020] Specifically, the vehicle body is equipped with four omnidirectional wheels at the lower end, and a push handle is fixed at one end of the vehicle body.

[0021] Specifically, the first motor is an explosion-proof motor, and the second motor is a brake motor.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The device adopts a vehicle-like design with four omnidirectional wheels at the bottom and a push handle fixed to one end, allowing it to be easily moved and positioned in different work sites. This significantly improves the portability of the equipment, making it suitable for field or temporary work environments, and it can be quickly deployed and repositioned without the need for additional carrying tools.

[0023] 2. A second motor drives the turntable, slide bar, and rotating sleeve, combined with a spring-slider system, to achieve automatic winding of the inlet hose. After the sleeve at one end of the inlet hose is removed, it is inserted between the rotating sleeve and the central rod. Starting the motor completes the winding process. The brake design locks the turntable after closing, preventing the inlet hose from accidentally loosening or unwinding. This simplifies the storage process, reduces manual operation time, and avoids hose tangling or damage, improving equipment storage and transportation efficiency.

[0024] 3. The filtration unit includes filter plates and a conical filter cartridge, increasing the filtration area, ensuring smooth water flow, and reducing the risk of clogging by impurities. Spiral blades utilize the centrifugal force generated by the water flow impact to cause impurities to accumulate on the side walls of the filter box, preventing large-area clogging of the filter plates. The side walls of the filter box are equipped with removable sealing plates for easy opening and removal of deposited impurities. These designs extend the filtration life and ensure sufficient water intake to the pump, making it particularly suitable for scenarios with poor water quality.

[0025] 4. By introducing a pressure sensor, solenoid valve, and controller linkage system: When the filter unit becomes clogged, causing the filter box to exceed the negative pressure limit, the sensor triggers the controller to open the solenoid valve, introducing external air to balance the pressure and prevent damage to the pump body or filter box due to excessive negative pressure. Combined with the use of the first motor (explosion-proof motor), the overall reliability and safety of the device are improved in high-pressure or hazardous environments, reducing maintenance costs and failure risks. Attached Figure Description

[0026] Figure 1 This is a top view of the present invention.

[0027] Figure 2 This is a schematic diagram of the turntable.

[0028] Figure 3 This is a schematic diagram of the internal structure of the filter box.

[0029] The components in the attached diagram are named as follows: 1. Vehicle body, 2. First motor, 3. Coupling, 4. Pump body, 5. Side plate, 6. Push handle, 7. Support rod, 8. Second motor, 9. Turntable, 10. Center rod, 11. Slide rod, 12. Rotary sleeve, 13. Inlet hose, 14. Long groove, 15. Slider, 16. Spring, 17. Filter box, 18. Filter plate, 19. Conical filter cylinder, 20. Spiral blade, 21. Slot, 22. Sealing plate, 23. Pressure sensor, 24. Solenoid valve, 25. Insertion tube, 26. Connecting plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Example 1: Refer to Figures 1-3 As shown, a portable miniature water pump device includes a vehicle body 1, four omnidirectional wheels are installed at the lower end of the vehicle body 1, and a push handle 6 is fixed at one end of the vehicle body 1.

[0032] The upper part of the vehicle body 1 is fixed with a first motor 2 and a pump body 4. The first motor 2 is an explosion-proof motor. The output shaft of the first motor 2 and the input shaft of the pump body 4 are connected by a coupling 3.

[0033] A side plate 5 is fixed to one side of the vehicle body 1. A support rod 7 is fixed to the side plate 5. The support rod 7 is perpendicular to the side plate 5. A second motor 8, which is a brake motor, is concentrically fixed to the end of the support rod 7 away from the side plate 5. A turntable 9 is concentrically fixed to the output shaft of the second motor 8. A center rod 10 is concentrically rotatably connected to the turntable 9.

[0034] A long groove 14 is provided on the turntable 9, the length of which is parallel to the radial direction of the turntable 9. A slider 15 is elastically slidably disposed within the long groove 14. Specifically, a spring 16 is disposed within the long groove 14, one end of which is fixedly connected to the slider 15, and the other end of which is fixedly connected to the turntable 9. Under the elastic force of the spring 16, the slider 15, the sliding rod 11, and the rotating sleeve 12 tend to move towards the central rod 10. The upper end of the slider 15 is fixedly attached to the sliding rod 11, and the rotating sleeve 12 is rotatably sleeved on the outer side of the sliding rod 11.

[0035] The inlet hose 13 passes between the rotating sleeve 12 and the center rod 10. A filter box 17 is detachably and fixedly sealed to the inlet of the pump body 4. Specifically, a connecting plate 26 is fixedly connected to the lower end of the filter box 17, and the connecting plate 26 is detachably and fixedly sealed to the inlet of the pump body 4.

[0036] A filter unit is installed inside the filter box 17. A pipe 25 is fixedly connected to the upper end of the filter box 17. A sleeve is fixed to one end of the inlet hose 13. The sleeve and the pipe 25 are detachably and securely connected. The sleeve and the pipe 25 form a quick connector.

[0037] The filtration unit includes a filter plate 18 with an inner hole in the middle. A conical filter cylinder 19 is fixed at the upper end of the filter plate 18 and communicates with the inner hole. Water entering the filter box 17 can pass through the filter plate 18 and the conical filter cylinder 19 and then flow out.

[0038] A slot 21 is provided on one side of the filter box 17. The slot 21 is located above the filter plate 18. A sealing plate 22 is detachably and fixedly connected to the outside of the filter box 17, and the sealing plate 22 seals and blocks the slot 21.

[0039] The first motor 2 is started, which drives the pump body 4 to work, thereby causing the water in the water truck to be discharged through the inlet hose 13, filter box 17, filter unit, pump body 4 and pump body 4 outlet. The pump body 4 can pressurize the water and inject it into the formation.

[0040] When it is necessary to retract the inlet hose 13, disassemble the inlet hose 13 so that both ends of the inlet hose 13 are separated from the insertion pipe 25 and the water cart, respectively. The insertion sleeve at one end of the inlet hose 13 is then secured between the rotating sleeve 12 and the central rod 10. Start the second motor 8, which drives the turntable 9, the central rod 10, the sliding rod 11, and the rotating sleeve 12 to rotate. The inlet hose 13 can gradually wrap around the outside of the central rod 10 and the rotating sleeve 12. After the winding of the inlet hose 13 is complete, turn off the second motor 8. The second motor 8 engages its brake and prevents the turntable 9 from rotating, thus preventing the inlet hose 13 from unwinding.

[0041] When water enters the filter box 17 and flows through the filter plate 18 and the conical filter cylinder 19, impurities in the water can be filtered by the filter plate 18 and the conical filter cylinder 19. The conical filter cylinder 19 increases the filtration area of ​​the water in the filter box 17. As impurities accumulate, when the filter holes of the filter plate 18 become clogged, the conical filter cylinder 19 can filter the water in the filter box 17, preventing insufficient water intake from the pump body 4.

[0042] Opening the sealing plate 22 can remove impurities from the filter plate 18 inside the filter box 17.

[0043] The slider 15 can slide within the long groove 14, and the distance between the rotating sleeve 12 and the central rod 10 can change, so it can be used with water inlet hoses 13 of different diameters.

[0044] Example 2: Based on Example 1, referring to... Figure 3 As shown, a spiral blade 20 is fixed on the outside of the conical filter cartridge 19.

[0045] When water enters the filter box 17 from the insertion tube 25 and impacts the spiral blades 20, the water in the filter box 17 can rotate under the guidance of the spiral blades 20. When the water in the filter box 17 rotates, under the action of centrifugal force, the impurities intercepted by the filter plate 18 and the conical filter cylinder 19 can gather towards the side wall of the filter box 17, avoiding the accumulation of impurities that will clog the large area of ​​the filter plate 18.

[0046] Example 3: Based on Example 1, referring to... Figure 3 As shown, a pressure sensor 23 is fixed at the upper end of the filter box 17, and a solenoid valve 24 is fixedly installed at the upper end of the filter box 17. The pressure sensor 23, the controller, the solenoid valve 24 and the power supply are electrically connected.

[0047] When the filter plate 18 and the conical filter cartridge 19 are blocked, the negative pressure in the filter box 17 increases. In order to avoid damage to the pump body 4 and the filter box 17, when the pressure sensor 23 detects that the negative pressure value in the filter box 17 exceeds the maximum negative pressure set in the controller, the controller opens the solenoid valve 24, allowing outside air to enter the filter box 17, thus preventing damage to the pump body 4 and the filter box 17.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A portable micro water injection pump device, comprising a vehicle body (1), a first motor (2) and a pump body (4) fixed to the upper end of the vehicle body (1), wherein the output shaft of the first motor (2) and the input shaft of the pump body (4) are connected by a coupling (3), characterized in that, A side plate (5) is fixed to one side of the vehicle body (1). A support rod (7) is fixed on the side plate (5). The support rod (7) is perpendicular to the side plate (5). A second motor (8) is concentrically fixed to the end of the support rod (7) away from the side plate (5). A turntable (9) is concentrically fixed to the output shaft of the second motor (8). A center rod (10) is concentrically rotatably connected to the turntable (9). A long groove (14) is opened on the turntable (9). The length direction of the long groove (14) is parallel to the radial direction of the turntable (9). A slider (15) is elastically slidably arranged in the long groove (14). A sliding rod (11) is fixed at the upper end of the slider (15). A rotating sleeve (12) is provided on the outer side of the sliding rod (11). The water inlet hose (13) passes between the rotating sleeve (12) and the center rod (10). A filter box (17) is detachably and fixedly sealed on the inlet of the pump body (4). A filter unit is provided inside the filter box (17). A pipe (25) is fixedly connected to the upper end of the filter box (17). A sleeve is fixed at one end of the water inlet hose (13). The sleeve and the pipe (25) are detachably and fixedly sealed. The sleeve and the pipe (25) form a quick connector.

2. The portable micro water injection pump device according to claim 1, characterized in that, A spring (16) is provided in the long groove (14). One end of the spring (16) is fixedly connected to the slider (15), and the other end of the spring (16) is fixedly connected to the turntable (9). Under the elastic force of the spring (16), the slider (15), the slide rod (11), and the rotating sleeve (12) tend to move towards the central rod (10).

3. The portable micro water injection pump device according to claim 1, characterized in that, The filter box (17) is fixedly connected to a connecting plate (26) at its lower end, and the connecting plate (26) is detachably and fixedly sealed to the inlet of the pump body (4).

4. The portable micro water injection pump device according to claim 1, characterized in that, A pressure sensor (23) is fixed at the upper end of the filter box (17), and a solenoid valve (24) is fixedly installed at the upper end of the filter box (17). The pressure sensor (23), controller, solenoid valve (24) and power supply are electrically connected.

5. The portable micro water injection pump device according to claim 1, characterized in that, The filtration unit includes a filter plate (18), with an inner hole in the middle of the filter plate (18). A conical filter cylinder (19) is fixed at the upper end of the filter plate (18). The conical filter cylinder (19) communicates with the inner hole, and water entering the filter box (17) can flow out after passing through the filter plate (18) and the conical filter cylinder (19).

6. The portable micro water injection pump device according to claim 1, characterized in that, The filter box (17) has a slot (21) on one side, which is located above the filter plate (18). A sealing plate (22) is detachably and fixedly connected to the outside of the filter box (17), and the sealing plate (22) seals the slot (21).

7. The portable micro water injection pump device according to claim 5, characterized in that, The conical filter cartridge (19) has a spiral blade (20) fixed on its outer side.

8. The portable micro water injection pump device according to claim 1, characterized in that, The lower end of the vehicle body (1) is equipped with four omnidirectional wheels, and a pusher (6) is fixed to one end of the vehicle body (1).

9. The portable micro water injection pump device according to claim 1, characterized in that, The first motor (2) is an explosion-proof motor, and the second motor (8) is a brake motor.

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