High-response high-precision hydraulic station system

Abstract

The utility model relates to the technical field of hydraulic pressure, in particular to a high-response and high-precision hydraulic station system. The oil outlet system is arranged in the oil tank through a partition plate and divides the oil tank into two parts, the oil outlet system is arranged in one part of the oil tank, the oil return system is communicated with the oil outlet system, and part of the oil return system is arranged in the other part of the oil tank. The pressure source control system has the advantages that the output pressure is controlled by controlling the proportional overflow valve, the control system is high in response speed and control precision, and the requirement of the test system on the pressure source can be met.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic technology, and in particular to a high-response, high-precision hydraulic station system. Background Technology

[0002] With the continuous development of industrial technology, hydraulic systems are being used more and more widely in various fields, from machinery manufacturing to aerospace, from metallurgy to construction engineering, all of which rely on efficient and reliable hydraulic systems. Among them, high-precision brake fluid-resistant hydraulic power units, as a key piece of equipment, play a vital role in the testing of hydraulic solenoid valves for automotive braking systems.

[0003] Existing technology, CN2007201699358, often suffers from slow response speed and low accuracy in traditional hydraulic power units. This is mainly due to the following reasons: Firstly, the component design and selection of traditional hydraulic power units are not optimized. For example, the filtration accuracy of the filter is insufficient, failing to effectively remove minute impurities in the hydraulic oil, leading to increased wear inside the hydraulic system and affecting system performance and lifespan. Simultaneously, the selected components have limited response speed, making it difficult to achieve precise control of the hydraulic system pressure and easily resulting in large pressure fluctuations.

[0004] Therefore, a high-response, high-precision hydraulic station system needs to be designed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a high-response, high-precision hydraulic station system to overcome the aforementioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-response, high-precision hydraulic station system includes an oil tank, a partition separating the oil tank into two parts, an oil outlet system located within one part of the oil tank, and a return oil system connected to the oil outlet system and partially located within the other part of the oil tank. The oil outlet system includes a plunger pump located within the oil tank, a first filter connected to the plunger pump, a hydraulic pipeline connected to the plunger pump, a motor driving the plunger pump, a pressure relief valve on the hydraulic pipeline, and a pressure gauge with a manual valve. The pressure gauge is located at the outlet of the hydraulic pipeline, and a filter is installed between the pressure relief valve and the pressure gauge. The return oil system includes a first branch pipe, a second branch pipe, a third branch pipe, and a return oil pipe externally connected to the hydraulic pipeline. A safety valve is installed on the first branch pipe, a pressure relief solenoid valve is installed on the second branch pipe, and a proportional relief valve is installed on the third branch pipe.

[0008] Preferably, the first filter is located at the oil inlet of the plunger pump.

[0009] Preferably, the motor is a horizontal variable frequency motor and is located outside the oil tank.

[0010] Preferably, the first branch pipe, the second branch pipe, and the third branch pipe are connected in parallel to the return oil pipe, and one end of the return oil pipe is placed inside the oil tank, and a filter is provided at the end of the return oil pipe. The return oil pipe is also externally connected to a return oil port.

[0011] Preferably, the first branch pipe is disposed at the front end of the pressure relief valve, the second branch pipe is disposed between the first branch pipe and the pressure relief valve, and the third branch pipe is disposed between the pressure gauge and the filter.

[0012] The beneficial effects of this utility model are as follows: In this technical solution, both the plunger pump and the filter are placed inside the oil tank, which is filled with a certain volume of brake fluid. The plunger pump is connected to the motor. After being purified by the filter, the brake fluid is drawn into the hydraulic pipeline by the plunger pump. The pipeline branches are equipped with safety valves, pressure relief valves, and proportional relief valves. If a system malfunction occurs and the hydraulic pressure becomes uncontrollable, the safety valves will activate to prevent the overall system pressure from continuously increasing and causing safety issues. The pressure relief valves in the pipeline branches allow for the external pressure output. The output pressure is controlled by the proportional relief valve. This control system has a fast response speed and high control accuracy, meeting the pressure source requirements of this type of testing system. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a high-response, high-precision hydraulic station system according to the present invention;

[0014] In the diagram: 1. Pressure gauge; 2. Proportional relief valve; 3. Pressure limiting valve; 4. Pressure relief solenoid valve; 5. Safety valve; 7. Oil tank; 8. First filter; 9. Piston pump; 10. Motor; 11. First branch pipe; 12. Second branch pipe; 13. Third branch pipe; 14. Return oil pipe; 15. Fourth branch pipe; 16. Return oil port; 17. Hydraulic pipeline. Detailed Implementation

[0015] Reference Figure 1 A high-response, high-precision hydraulic station system includes an oil tank 7, an oil tank 7 divided into two parts by a partition, an oil outlet system located in one part of the oil tank, and an oil return system connected to the oil outlet system and partially located in the other part of the oil tank.

[0016] The oil outlet system includes a plunger pump placed in the oil tank 7, a first filter 8 connected to the plunger pump, a hydraulic pipeline connected to the plunger pump, a motor driving the plunger pump, a pressure relief valve 3 installed on the hydraulic pipeline, and a pressure gauge 1 with a hand valve. The pressure gauge is placed at the outlet of the hydraulic pipeline, and a filter is also installed between the pressure relief valve 3 and the pressure gauge 1 to further ensure the cleanliness of the outflowing oil.

[0017] The pressure gauge 1 is provided with a device for visual inspection and calibration, and the hand valve at the front end is used to cut off the oil supply to provide necessary protection for the pressure gauge components.

[0018] Pressure relief valve 3 is used to adjust the pressure in the entire pipeline, thereby adjusting the flow rate;

[0019] The first filter 8 is located at the oil inlet of the plunger pump and can effectively filter backflow and residual impurities in the oil tank. The first filter 8 is a high-precision filter, which effectively removes tiny impurities in the hydraulic oil, ensuring the cleanliness of the hydraulic system. This ensures that the system output does not contaminate the entire system and improves the service life of the system.

[0020] The motor is a horizontal variable frequency motor, located outside the oil tank 7. A horizontal 4KW motor with an external mounting is chosen to reduce energy consumption and prevent heat from being drawn into the hydraulic system during operation, thus reducing the hydraulic oil temperature. A horizontal variable frequency motor and a brake-resistant plunger pump are used, with the pump's operation controlled according to different test conditions to provide a stable pressure source for the system. Simultaneously, the pump station system is optimized to ensure smooth hydraulic oil flow and reduce pressure loss. The use of a horizontal, externally mounted motor also ensures that heat does not affect the hydraulic oil temperature.

[0021] The oil return system includes a first branch pipe 11, a second branch pipe 12, a third branch pipe 13, and an oil return pipe 14 externally connected to the hydraulic pipeline. The first branch pipe, the second branch pipe, and the third branch pipe are connected to the oil return pipe, and one end of the oil return pipe is placed inside the oil tank. A filter is provided at the end of the oil return pipe, and the oil return pipe is also externally connected to an oil return port 16.

[0022] A safety valve 5 is also provided on the first branch pipe, and the first branch pipe is located at the front end of the pressure limiting valve 3. The safety valve is selected in the range of 250 bar, so that the system operation and personnel safety can be effectively protected while providing test pressure.

[0023] A pressure relief solenoid valve 4 is provided on the second branch pipe; and the second branch pipe is located between the first branch pipe and the pressure relief valve 3.

[0024] A proportional relief valve 2 is installed on the third branch pipe, which is located between the pressure gauge and the filter. The proportional relief valve is selected to be resistant to brake fluid and has an adjustment range of 0-250 bar, providing a reasonable hydraulic range for solenoid valve testing. By selecting the appropriate proportional relief valve and combining it with advanced control technology, the system response speed and control accuracy are improved, enabling precise regulation of the hydraulic system pressure. A fourth branch pipe 15 is also connected externally to the hydraulic line after the second branch pipe before the pressure relief valve, connecting to the proportional relief valve 2.

[0025] The advantages of this invention are that both the plunger pump and the filter are placed inside the oil tank, which is filled with a certain volume of brake fluid. The plunger pump is connected to the motor. After being purified by the filter, the brake fluid is drawn into the hydraulic pipeline by the plunger pump. The pipeline branches are equipped with safety valves, pressure relief valves, and proportional relief valves. If a system malfunction occurs and the hydraulic pressure becomes uncontrollable, the safety valves will activate to prevent the overall system pressure from continuously increasing and causing safety issues. The pressure relief valves in the pipeline branches can be controlled to initiate the external pressure output. The output pressure is controlled by the proportional relief valve. This control system has a fast response speed and high control accuracy, meeting the pressure source requirements of this type of testing system.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-response, high-precision hydraulic station system, comprising an oil tank, an oil tank divided into two parts by a partition, an oil outlet system located within one part of the oil tank, and an oil return system interconnected with the oil outlet system and partially located within the other part of the oil tank, characterized in that: The oil outlet system includes a plunger pump placed in the oil tank, a first filter connected to the plunger pump, a hydraulic pipeline connected to the plunger pump, a motor driving the plunger pump, a pressure relief valve installed on the hydraulic pipeline, and a pressure gauge with a manual valve. The pressure gauge is located at the outlet of the hydraulic pipeline, and a filter is also installed between the pressure relief valve and the pressure gauge. The oil return system includes a first branch pipe, a second branch pipe, a third branch pipe, and a return pipe externally connected to the hydraulic pipeline. A safety valve is installed on the first branch pipe, a pressure relief solenoid valve is installed on the second branch pipe, and a proportional relief valve is installed on the third branch pipe.

2. The high-response, high-precision hydraulic station system according to claim 1, characterized in that: The first filter is installed at the oil inlet of the plunger pump.

3. The high-response, high-precision hydraulic station system according to claim 1, characterized in that: The motor is a horizontal variable frequency motor and is located outside the oil tank.

4. The high-response, high-precision hydraulic station system according to claim 1, characterized in that: The first branch pipe, the second branch pipe, and the third branch pipe are connected to the return oil pipe, and one end of the return oil pipe is placed inside the oil tank. A filter is provided at the end of the return oil pipe, and the return oil pipe is also connected to an external return oil port.

5. The high-response, high-precision hydraulic station system according to claim 1, characterized in that: The first branch pipe is located at the front end of the pressure relief valve, the second branch pipe is located between the first branch pipe and the pressure relief valve, and the third branch pipe is located between the pressure gauge and the filter.

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