Novel hydraulic station
By introducing low-pressure and high-pressure oil pumps and corresponding pipeline designs into the hydraulic station, the problem of inconsistent oil pressure requirements when inspecting different workpieces is solved, realizing the flexibility of starting high pressure and adjustment, as well as pipeline protection, and improving the applicability and durability of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-03-24
AI Technical Summary
Existing hydraulic stations cannot simultaneously meet the different pressure requirements of different workpieces during testing, especially the requirement of higher oil pressure during startup and lower oil pressure during adjustment. A single hydraulic pump cannot adapt to this testing situation.
A novel hydraulic station was designed, comprising a low-pressure oil pump and a high-pressure oil pump, combined with high-pressure and low-pressure pipelines, for starting and regulating oil pressure respectively. The high-pressure oil pump provides the larger oil pressure required for starting, while the low-pressure oil pump is used for fine-tuning the oil pressure. Check valves and relief valves are installed to protect the pipelines and ensure the durability of the system.
It enables the provision of high oil pressure required for startup during workpiece inspection and allows for fine-tuning of oil pressure after startup, protecting pipelines from damage and improving the applicability and durability of the device.
Smart Images
Figure CN224032883U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic power units, and in particular to a novel hydraulic power unit. Background Technology
[0002] A hydraulic power unit, also known as a hydraulic pump station, is a hydraulic power device consisting of an oil pump, motor, oil tank, valves, filters, and other auxiliary components. In current technology, hydraulic power units are often used to test devices.
[0003] In existing technologies, different workpieces require different pressures of hydraulic fluid for testing. Conventional hydraulic stations typically use a single hydraulic pump, which has a limited adjustable range. Furthermore, some devices require a large initial starting hydraulic pressure, but the required adjustment pressure after startup is very small. This necessitates that the hydraulic pump can output a large amount of power while also having a small adjustment function. A single hydraulic pump is difficult to adapt to this testing situation. Therefore, a new type of hydraulic station is proposed to solve the above problems. Utility Model Content
[0004] To overcome the above deficiencies, this utility model provides a new type of hydraulic station, which aims to improve the problem in the prior art that "some devices require a large starting load but a small adjustment load, and a single hydraulic pump cannot adapt to this test situation".
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel hydraulic station, comprising a support, characterized in that: an oil tank is installed on the upper surface of the support, an oil supply component is provided on the upper surface of the support, and a control component is provided on the upper surface of the support;
[0006] The oil supply assembly includes a low-pressure oil pump and a high-pressure oil pump, which are mounted on the outer wall of the bracket. Pressure filters are installed at the output ends of both the low-pressure and high-pressure oil pumps. The pressure filter connected to the high-pressure oil pump is connected to the test piece via a high-pressure pipeline. The pressure filter connected to the low-pressure oil pump is connected to the input end of the test piece via a low-pressure pipeline. The output end of the test piece is connected to the oil tank. A pressure sensor and a pressure gauge are installed on the outer wall of the high-pressure pipeline, and a ball valve is installed on the inner wall of the high-pressure pipeline. The high-pressure and low-pressure pipelines are identical in structure.
[0007] As a further description of the above technical solution:
[0008] The difference between the low-pressure pipeline and the high-pressure pipeline is:
[0009] A set of flow meters is installed on the outer wall of the low-pressure pipeline, and a set of one-way valves is installed on the inner wall of the high-pressure pipeline.
[0010] As a further description of the above technical solution:
[0011] The difference between the high-pressure pipeline and the low-pressure pipeline is:
[0012] The outer wall of the high-pressure pipeline is connected to the oil tank via the return oil pipeline, and the outer wall of the return oil pipeline is equipped with an electromagnetic relief valve and a proportional relief valve.
[0013] As a further description of the above technical solution:
[0014] An air cooler is installed on the outer wall of the oil return pipeline, and an oil return ball valve is installed at the connection between the oil return pipeline and the oil tank.
[0015] As a further description of the above technical solution:
[0016] Both the high-pressure oil pump and the low-pressure oil pump are equipped with suction filters at their input ends.
[0017] As a further description of the above technical solution:
[0018] The outer wall of the oil tank is equipped with a liquid level sensor and a liquid temperature sensor, and a refueling filter is also installed on the outer wall of the oil tank.
[0019] As a further description of the above technical solution:
[0020] The low-pressure pipeline is connected in parallel with the return oil pipeline via a low-pressure relief valve.
[0021] As a further description of the above technical solution:
[0022] An electrical control box is installed at the top of the oil tank. The electrical control box, electromagnetic overflow valve, proportional overflow valve, and low-pressure overflow valve are electrically connected by wires.
[0023] This utility model has the following beneficial effects:
[0024] 1. In this utility model, by simultaneously setting a low-pressure oil pump and a high-pressure oil pump, during testing, the high-pressure oil pump can first drive the hydraulic oil in the oil tank to enter the test piece through the high-pressure pipeline, thus starting the test piece. Then, starting the low-pressure oil pump can continuously pump hydraulic oil into the workpiece through the low-pressure pipeline, thus achieving slow pressurization. The overall device has good applicability in use.
[0025] 2. In this utility model, by setting a one-way valve, the oil cannot return to the oil tank through the low-pressure pipeline, but can only return to the oil tank through the return oil pipeline. This can prevent high-pressure oil from entering the low-pressure pipeline and causing damage to the low-pressure pipeline. At the same time, a low-pressure relief valve can further protect the low-pressure pipeline. When the oil pressure inside the low-pressure pipeline is too high, the excess oil can enter the return oil pipeline through the low-pressure relief valve, thus preventing damage to the low-pressure pipeline. The overall device has good durability. Attached Figure Description
[0026] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;
[0027] Figure 2 This is a rear view of the three-dimensional structure of the overall device in this utility model;
[0028] Figure 3 This is a schematic diagram of the oil circuit connection of the overall device in this utility model.
[0029] Legend:
[0030] 1. Oil tank; 2. Oil supply assembly; 21. Low-pressure oil pump; 22. High-pressure oil pump; 23. Suction filter; 24. Pressure filter; 25. Ball valve 1; 26. Pressure sensor; 27. Check valve; 28. High-pressure pipeline; 29. Low-pressure pipeline; 210. Return oil pipeline; 3. Control assembly; 31. Solenoid relief valve; 32. Proportional relief valve; 33. Pressure gauge; 34. Flow meter; 35. Oil filling filter; 36. Liquid level sensor; 37. Liquid temperature sensor; 39. Return oil ball valve; 310. Low-pressure relief valve; 4. Electrical control box; 5. Air cooler; 6. Bracket; 7. Test piece. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Reference Figures 1-3This utility model provides an embodiment of a novel hydraulic station, comprising a support 6 for supporting the overall device, an oil tank 1 for storing hydraulic oil mounted on the upper surface of the support 6, an oil supply assembly 2 for supplying hydraulic oil to the test piece 7 on the upper surface of the support 6, and a control assembly 3 for controlling the return oil on the upper surface of the support 6. The oil supply assembly 2 includes a low-pressure oil pump 21 and a high-pressure oil pump 22, which are mounted on the outer wall of the support 6. The high-pressure oil pump 22 can output high-pressure oil but has poor fine-tuning capability, while the low-pressure oil pump 21 has strong fine-tuning capability but outputs lower oil pressure. Pressure filters 24 are installed at the output ends of both the low-pressure oil pump 21 and the high-pressure oil pump 22. The pressure filter 24 connected to the high-pressure oil pump 22 is connected to the test piece through a high-pressure pipeline 28. 7. The pressure filter 24 connected to the low-pressure oil pump 21 is connected to the input end of the test piece 7 via the low-pressure pipeline 29. During testing, the high-pressure pipeline 28 and the low-pressure pipeline 29 are simultaneously connected to the input end of the test piece 7. The output end of the test piece 7 is connected to the oil tank 1. Some test pieces 7 have their own oil return function, so the oil can be recovered by means of the oil return function of the test piece 7 itself. Some test pieces 7 do not have their own oil return function, so the hydraulic oil needs to be guided back to the inside of the oil tank 1 by means of the oil return pipeline 210. The outer wall of the high-pressure pipeline 28 is equipped with a pressure sensor 26 and a pressure gauge 33 for detecting the oil pressure. The inner wall of the high-pressure pipeline 28 is equipped with a ball valve 25 for controlling the pipeline switch. The high-pressure pipeline 28 and the low-pressure pipeline 29 are the same type of pipeline with the same structure.
[0033] Reference Figures 1-3 The difference between low-pressure pipeline 29 and high-pressure pipeline 28 is that: a flow meter 34 is installed on the outer wall of low-pressure pipeline 29, which can be used to count the total amount of oil output from low-pressure pipeline 29, facilitating the recording of test data; a one-way valve 27 is installed on the inner wall of high-pressure pipeline 28, which can be used to prevent high-pressure oil inside high-pressure pipeline 28 from flowing back into the interior of low-pressure pipeline 29, thus protecting low-pressure pipeline 29 and its external components. The difference between high-pressure pipeline 28 and low-pressure pipeline 29 is that: the outer wall of high-pressure pipeline 28 is connected to the return oil pipeline 210. The oil tanks 1 are interconnected. After the test is completed, for some test parts 7 that do not have the function of returning oil, the hydraulic oil can be guided back to the inside of the oil tank 1 through the return oil line 210. The outer wall of the return oil line 210 is equipped with an electromagnetic relief valve 31 and a proportional relief valve 32. The electromagnetic relief valve 31 and the proportional relief valve 32 can control the opening and closing of the return oil line 210. The outer wall of the return oil line 210 is equipped with an air cooler 5 for cooling the oil. At the connection between the return oil line 210 and the oil tank 1, a return oil ball valve 39 is installed to control the opening and closing of the return oil line 210.
[0034] Reference Figures 1-3Both the high-pressure oil pump 22 and the low-pressure oil pump 21 are equipped with suction filters 23 at their input ends. By setting suction filters 23, impurities inside the oil tank 1 can be prevented from entering the interior of the high-pressure oil pump 22 and the low-pressure oil pump 21. The outer wall of the oil tank 1 is equipped with a liquid level sensor 36 and a liquid temperature sensor 37 for detecting the oil inside the oil tank 1. The outer wall of the oil tank 1 is also equipped with a filler filter 35, which can prevent impurities from entering the interior of the oil tank 1 through the filler port. The low-pressure pipeline 29 is connected in parallel with the return oil pipeline 210 through a low-pressure relief valve 310. When the internal pressure of the low-pressure pipeline 29 is too high, the hydraulic oil inside the low-pressure pipeline 29 can pass through the low-pressure relief valve 310 and enter the interior of the return oil pipeline 210. This can prevent the low-pressure pipeline 29 from being damaged due to excessive oil pressure. An electrical control box 4 is installed at the top of the oil tank 1. The electrical control box 4, the electromagnetic relief valve 31, the proportional relief valve 32, and the low-pressure relief valve 310 are electrically connected by wires.
[0035] Working principle: When testing component 7, the high-pressure oil pump 22 is started first. The high-pressure oil pump 22 draws hydraulic oil from the oil tank 1, filters impurities through the suction filter 23, and then pressurizes and outputs the oil. The output high-pressure oil is further filtered through the pressure filter 24 to ensure cleanliness. It is then delivered to the input end of component 7 through the high-pressure pipeline 28. Because the high-pressure oil pump 22 outputs high pressure, it provides sufficient power for component 7, which requires high oil pressure during startup, thus starting component 7. During this process, the pressure sensor 26 on the high-pressure pipeline 28... Pressure gauge 33 monitors the oil pressure in the pipeline in real time. Ball valve 25 controls the opening and closing of high-pressure pipeline 28. After the test piece 7 is started, low-pressure oil pump 21 is started. Low-pressure oil pump 21 also draws oil from oil tank 1. After passing through oil suction filter 23 and pressure filter 24, hydraulic oil is continuously pumped into the input end of test piece 7 through low-pressure pipeline 29. Low-pressure oil pump 21 has strong fine-tuning capability and can slowly pressurize test piece 7 to meet the small-amplitude adjustment of oil pressure after test piece 7 is started. Flow meter 34 on low-pressure pipeline 29 is used to count the total output oil volume, which is convenient for recording test data.
[0036] During the operation of the tested component 7, if it has a return oil function, the oil can flow directly from the output end back to the oil tank 1; if it does not have a return oil function, the oil is guided back to the oil tank 1 through the return oil pipeline 210 connected to the outer wall of the high-pressure pipeline 28. The electromagnetic overflow valve 31 and the proportional overflow valve 32 on the return oil pipeline 210 control the opening and closing of the return oil pipeline 210 and the return oil pressure. When the system pressure is too high, the return oil flow can be adjusted through these two valves to reduce the system pressure. The air cooler 5 dissipates heat from the return oil to ensure that the oil temperature is within a suitable range. The return oil ball valve 39 controls the opening and closing of the connection between the return oil pipeline 210 and the oil tank 1. In addition, the low-pressure pipeline 29 is connected in parallel with the return oil pipeline 210 through the low-pressure overflow valve 310. When the pressure in the low-pressure pipeline 29 is too high, the excess oil enters the return oil pipeline 210 through the low-pressure overflow valve 310 to prevent the low-pressure pipeline 29 from being damaged due to excessive pressure.
[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 novel hydraulic station, comprising a support frame (6), characterized in that: An oil tank (1) is installed on the upper surface of the bracket (6), an oil supply component (2) is provided on the upper surface of the bracket (6), and a control component (3) is provided on the upper surface of the bracket (6). The oil supply assembly (2) includes a low-pressure oil pump (21) and a high-pressure oil pump (22). The low-pressure oil pump (21) and the high-pressure oil pump (22) are installed on the outer wall of the bracket (6). The output ends of the low-pressure oil pump (21) and the high-pressure oil pump (22) are both equipped with pressure filters (24). The pressure filter (24) connected to the high-pressure oil pump (22) is connected to the test piece (7) through a high-pressure pipeline (28). The pressure filter (24) connected to the low-pressure oil pump (21) is connected to the input end of the test piece (7) through a low-pressure pipeline (29). The output end of the test piece (7) is connected to the oil tank (1). The outer wall of the high-pressure pipeline (28) is equipped with a pressure sensor (26) and a pressure gauge (33). The inner wall of the high-pressure pipeline (28) is equipped with a ball valve (25). The high-pressure pipeline (28) and the low-pressure pipeline (29) are the same type of pipeline with the same structure.
2. The novel hydraulic station according to claim 1, characterized in that: The difference between the low-pressure pipeline (29) and the high-pressure pipeline (28) is as follows: A set of flow meters (34) is installed on the outer wall of the low-pressure pipeline (29), and a set of one-way valves (27) is installed on the inner wall of the high-pressure pipeline (28).
3. The novel hydraulic station according to claim 1, characterized in that: The difference between the high-pressure pipeline (28) and the low-pressure pipeline (29) is as follows: The outer wall of the high-pressure pipeline (28) is connected to the oil tank (1) through the return oil pipeline (210). The outer wall of the return oil pipeline (210) is equipped with an electromagnetic overflow valve (31) and a proportional overflow valve (32).
4. A novel hydraulic station according to claim 3, characterized in that: An air cooler (5) is installed on the outer wall of the return oil pipeline (210), and a return oil ball valve (39) is installed at the connection between the return oil pipeline (210) and the oil tank (1).
5. A novel hydraulic station according to claim 1, characterized in that: Both the high-pressure oil pump (22) and the low-pressure oil pump (21) are equipped with oil suction filters (23) at their input ends.
6. A novel hydraulic station according to claim 1, characterized in that: The outer wall of the oil tank (1) is equipped with a liquid level sensor (36) and a liquid temperature sensor (37), and the outer wall of the oil tank (1) is equipped with a refueling filter (35).
7. A novel hydraulic station according to claim 1, characterized in that: The low-pressure pipeline (29) is connected in parallel with the return oil pipeline (210) through a low-pressure relief valve (310).
8. A novel hydraulic station according to claim 1, characterized in that: An electrical control box (4) is installed at the top of the oil tank (1). The electrical control box (4), electromagnetic overflow valve (31), proportional overflow valve (32), and low-pressure overflow valve (310) are electrically connected by wires.