Hydraulic loading flow testing device

Abstract

The utility model relates to a hydraulic loading flow testing device which is characterized by comprising a machine body, a valve body is installed on the machine body, a flow channel is formed in the valve body, a flow meter is installed on the valve body, the flow meter is communicated with the flow channel, a liquid inlet and a liquid outlet are formed in the valve body, and the liquid inlet and the liquid outlet are communicated with the two ends of the flow channel respectively. A proportional overflow valve is installed on the machine body, and the proportional overflow valve is installed on the flow channel between the liquid inlet and the liquid outlet. The method has the effect of improving the detection accuracy of the hydraulic system.

Description

Technical Field

[0001] The present application relates to the field of hydraulic system detection, and in particular to a hydraulic loading flow testing device. Background Art

[0002] Hydraulic systems need to be tested after they are manufactured. However, during the test phase, actual on-site load tests cannot be completed, and only basic pressure tests can be completed. The actual required flow rate is also calculated based on the operating speed or rotation speed of the cylinder or actuator. It is impossible to accurately test the actual required flow rate or the actual output flow of the hydraulic oil pump. Utility Model Content

[0003] In order to improve the accuracy of hydraulic system detection, the present application provides a hydraulic loading flow testing device.

[0004] The hydraulic loading flow test device provided in this application adopts the following technical solution:

[0005] A hydraulic loading flow testing device, characterized in that it includes a machine body, a valve body is installed on the machine body, a flow channel is opened in the valve body, a flow meter is installed on the valve body, the flow meter is connected to the flow channel, a liquid inlet and a liquid outlet are opened on the valve body, the liquid inlet and the liquid outlet are connected to the two ends of the flow channel respectively, a proportional relief valve is installed on the machine body, and the proportional relief valve is installed on the flow channel between the liquid inlet and the liquid outlet.

[0006] By adopting the above technical solution, the hydraulic oil of the hydraulic system enters from the liquid inlet and then flows back to the hydraulic system from the liquid outlet. During this period, the flow meter detects the flow of the hydraulic system. The setting of the proportional relief valve allows the proportional relief valve to be opened only when the hydraulic oil reaches the pressure set by the proportional relief valve, thereby simulating the load condition, detecting the flow of the hydraulic system under load, and improving the accuracy of the hydraulic system detection.

[0007] Optionally, a pressure measuring joint is installed on the valve body, the pressure measuring joint is connected to the flow channel, and a pressure gauge is installed on the body, and the pressure gauge is inserted into the pressure measuring joint.

[0008] By adopting the above technical solution, the setting of the pressure gauge can facilitate real-time observation of the pressure of the hydraulic oil in the flow channel and facilitate the control of the adjustment of the proportional relief valve.

[0009] Optionally, a filter is installed on the machine body, and the filter is connected to the flow channel.

[0010] By adopting the above technical solution, the filter can filter out the debris in the flow channel, thereby reducing the probability of the hydraulic oil returning to the hydraulic system containing impurities.

[0011] Optionally, a connecting channel is provided in the valve body, and the connecting channel connects two ends of the flow channel.

[0012] By adopting the above technical solution and setting the connecting channel, the oil outlet of the hydraulic system can be connected to the liquid outlet for detection, thereby reducing the probability of failure to detect due to connection errors and improving the fault tolerance of the detection equipment.

[0013] Optionally, a plurality of one-way valves are installed on the valve body, and the plurality of one-way valves are respectively connected to the flow channel and the connecting channel, so as to divide the flow channel and the connecting channel into two one-way channels.

[0014] By adopting the above technical solution, the one-way valve can flow the hydraulic oil entering the liquid inlet and the hydraulic oil entering the liquid outlet through two channels respectively, thereby eliminating the need to set up detection equipment on the connecting channel and reducing costs.

[0015] Optionally, the flow channel is provided with pressure measuring joints near the liquid inlet, the liquid outlet and the middle of the flow channel.

[0016] By adopting the above technical solution and performing hydraulic pressure testing in different places, the accuracy of the detection can be improved.

[0017] Optionally, a pressure measuring hose is connected between the pressure gauge and the pressure measuring joint.

[0018] By adopting the above technical solution, the provision of the pressure measuring hose facilitates the connection of the pressure gauge with pressure measuring connectors at different positions.

[0019] Optionally, a plurality of wheels are installed at the bottom of the machine body.

[0020] By adopting the above technical solution, the arrangement of the wheels facilitates the movement of the machine body, thereby facilitating the movement of the machine body to different positions for testing.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The hydraulic oil of the hydraulic system enters from the inlet and then flows back to the hydraulic system from the outlet. During this period, the flow meter detects the flow of the hydraulic system. The proportional relief valve is set so that the proportional relief valve can be opened only when the hydraulic oil reaches the pressure set by the proportional relief valve, thereby simulating the load condition and detecting the flow of the hydraulic system under load, thereby improving the accuracy of the hydraulic system detection;

[0023] 2. The setting of the filter can filter out the debris in the flow channel, thereby reducing the probability of impurities in the hydraulic oil flowing back into the hydraulic system;

[0024] 3. The setting of the connection channel enables the oil outlet of the hydraulic system to be connected to the liquid outlet for detection, reducing the probability of failure to detect due to connection errors and improving the fault tolerance of the detection equipment;

[0025] 4. The setting of the one-way valve can make the hydraulic oil entering the inlet and the hydraulic oil entering the outlet flow through two channels respectively, so there is no need to set up detection equipment on the connecting channel, reducing costs;

[0026] 5. The setting of the wheels facilitates the movement of the machine body, thereby facilitating the movement of the machine body to different locations for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0028] Figure 2 It is a system structure diagram of the overall structure of this embodiment.

[0029] Figure 3 It is a schematic diagram of the overall structure of this embodiment from another perspective.

[0030] Explanation of the reference numerals in the accompanying drawings: 1. body; 2. valve body; 3. flow channel; 4. flow meter; 5. liquid inlet; 6. liquid outlet; 7. proportional relief valve; 8. pressure measuring joint; 9. filter; 10. connecting channel; 101. first connecting channel; 102. second connecting channel; 11. one-way valve; 111. first one-way valve; 112. second one-way valve; 113. third one-way valve; 114. fourth one-way valve; 12. pressure measuring hose; 13. wheel; 14. pressure gauge. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application embodiment discloses a hydraulic loading flow test device, referring to Figure 1 and Figure 2, including a body 1 which is rectangular as a whole, a valve body 2 is installed on the upper surface of the body 1, a flow channel 3 for the flow of hydraulic oil is opened in the valve body 2, a flow meter 4 is installed on the valve body 2, the flow meter 4 is connected to the flow channel 3, and a liquid inlet 5 and a liquid outlet 6 are opened on the valve body 2 to detect the flow of hydraulic oil in the flow channel 3, the liquid inlet 5 and the liquid outlet 6 are respectively connected to the two ends of the flow channel 3, a proportional relief valve 7 is installed on the body 1, and the proportional relief valve 7 is installed on the flow channel 3 between the liquid inlet 5 and the liquid outlet 6; after the hydraulic oil of the hydraulic system enters from the liquid inlet 5, it flows back to the hydraulic system from the liquid outlet 6, during which the flow meter 4 detects the flow of the hydraulic system, and the setting of the proportional relief valve 7 enables the proportional relief valve 7 to be opened only when the hydraulic oil reaches the pressure set by the proportional relief valve 7, thereby simulating the load condition, detecting the flow of the hydraulic system under the load condition, and improving the accuracy of the hydraulic system detection.

[0033] Reference Figure 1 and Figure 2 A connecting channel 10 is provided in the valve body 2, and the connecting channel 10 communicates with both ends of the flow channel 3; a plurality of one-way valves 11 are installed on the valve body 2, and the plurality of one-way valves 11 are respectively connected to the flow channel 3 and the connecting channel 10, so as to divide the flow channel 3 and the connecting channel 10 into two one-way channels. In this embodiment, the connecting channel 10 is provided with two, namely a first connecting channel 101 and a second connecting channel 102, and the one-way valves 11 are provided with four, namely a first one-way valve 111, a second one-way valve 112, a third one-way valve 113 and a fourth one-way valve 114. The first one-way valve 111 is installed on the flow channel 3 near the liquid inlet 5, and the second one-way valve 112 is installed on the flow channel 3 near the liquid outlet 6. The first one-way valve 111 and the second one-way valve 112 restrict the hydraulic oil at the liquid outlet 6 from flowing to the liquid inlet 5. One end of the first connecting channel 101 and the second connecting channel 102 are respectively arranged at both ends of the first one-way valve 111, and the other ends of the first connecting channel 101 and the second connecting channel 102 are respectively arranged at both ends of the second one-way valve 112. The third one-way valve 113 is installed on the first connecting channel 101, and the fourth one-way valve 114 is installed on the second connecting channel. The third one-way valve 113 and the fourth one-way valve 114 restrict the hydraulic oil at the liquid inlet 5 from flowing to the liquid outlet 6; when the oil outlet end of the hydraulic system is connected to the liquid inlet 5, the hydraulic oil returns to the hydraulic system from the liquid outlet 6 after passing through the first one-way valve 111 and the second one-way valve 112. When the oil outlet end of the hydraulic system is critical to the liquid outlet 6, the hydraulic oil returns to the hydraulic system from the liquid inlet 5 after passing through the third one-way valve 113 and the fourth one-way valve 114.

[0034] Reference Figure 1 and Figure 2A pressure measuring joint 8 is installed on the valve body 2, and the pressure measuring joint 8 is connected to the flow channel 3. The flow channel 3 is provided with pressure measuring joints 8 near the liquid inlet 5, the liquid outlet 6 and the middle of the flow channel 3. In this embodiment, a pressure measuring joint 8 is provided at the liquid inlet 5 and the liquid outlet 6, and pressure measuring joints 8 are provided on both sides of the proportional relief valve 7 in the middle of the flow channel 3. A pressure gauge 14 is installed on the body 1. In this embodiment, two pressure gauges 14 are provided. A pressure measuring hose 12 is connected between the pressure gauge 14 and the pressure measuring joint 8. One end of the pressure measuring hose 12 is connected to the pressure gauge 14, and the other end of the pressure measuring hose 12 is detachably inserted into the pressure measuring joint 8. The pressure gauge 14 is inserted into the pressure measuring joint 8 through the pressure measuring hose 12.

[0035] Reference Figure 2 and Figure 3 A filter 9 is installed on the body 1, and the filter 9 is connected to the flow channel 3. The setting of the filter 9 can filter out the debris in the flow channel 3, thereby reducing the probability of the hydraulic oil containing impurities flowing back into the hydraulic system. In this embodiment, the filter 9 is a high-pressure filter 9.

[0036] Reference Figure 1 A plurality of wheels 13 are installed at the bottom of the body 1. In this embodiment, four wheels 13 are arranged at the four corners of the bottom of the body 1 respectively. The wheels 13 are single-brake universal wheels. The arrangement of the wheels 13 is convenient for driving the body 1 to move, thereby facilitating the movement of the body 1 to different positions for detection.

[0037] The implementation principle of the embodiment of the present application is: push the body 1 to the hydraulic system that needs to be tested, so that the liquid outlet of the hydraulic system is connected to the body 1. When the liquid outlet of the hydraulic system is connected to the liquid inlet 5 of the body 1, the hydraulic oil in the hydraulic system enters the flow channel 3 from the liquid inlet 5, and then the pressure of the proportional relief valve 7 is adjusted according to the required load. The hydraulic oil passes through the proportional relief valve 7 after passing through the first one-way valve 111, and then passes through the filter 9 and the flow meter 4. The flow meter 4 displays the flow of the hydraulic system under the current pressure. After that, the hydraulic oil returns to the hydraulic system from the liquid outlet 6 after passing through the second one-way valve 112. The current pressure and flow rate are recorded to obtain the test results to complete the test of the hydraulic system; when the liquid outlet of the hydraulic system is connected to the liquid outlet 6 of the body 1, the hydraulic oil in the hydraulic system enters the flow channel 3 from the liquid outlet 6, and then the pressure of the proportional relief valve 7 is adjusted according to the required load. The hydraulic oil passes through the proportional relief valve 7 after passing through the third one-way valve 113, and then passes through the filter 9 and the flow meter 4. The flow meter 4 displays the flow of the hydraulic system under the current pressure, and then the hydraulic oil passes through the fourth one-way valve 114 and returns to the hydraulic system from the liquid inlet 5; record the current pressure and flow rate to obtain the test results to complete the test of the hydraulic system.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hydraulic loading flow test device, characterized in that: The invention comprises a machine body (1), a valve body (2) being mounted on the machine body (1), a flow channel (3) being provided in the valve body (2), a flow meter (4) being mounted on the valve body (2), the flow meter (4) being connected to the flow channel (3), a liquid inlet (5) and a liquid outlet (6) being provided on the valve body (2), the liquid inlet (5) and the liquid outlet (6) being connected to two ends of the flow channel (3) respectively, and a proportional relief valve (7) being mounted on the machine body (1), the proportional relief valve (7) being mounted on the flow channel (3) between the liquid inlet (5) and the liquid outlet (6).

2. A hydraulic loading flow test device according to claim 1, characterized in that: A pressure measuring joint (8) is installed on the valve body (2), the pressure measuring joint (8) is connected to the flow channel (3), and a pressure gauge (14) is installed on the machine body (1), the pressure gauge (14) is inserted into the pressure measuring joint (8).

3. A hydraulic loading flow test device according to claim 2, characterized in that: A filter (9) is installed on the machine body (1), and the filter (9) is connected to the flow channel (3).

4. A hydraulic loading flow test device according to claim 3, characterized in that: A connecting channel (10) is provided in the valve body (2), and the connecting channel (10) is connected to both ends of the flow channel (3).

5. A hydraulic loading flow test device according to claim 4, characterized in that: A plurality of one-way valves (11) are installed on the valve body (2), and the plurality of one-way valves (11) are respectively connected to the flow channel (3) and the connecting channel (10), so as to divide the flow channel (3) and the connecting channel (10) into two one-way channels.

6. A hydraulic loading flow test device according to claim 5, characterized in that: The flow channel (3) is provided with pressure measuring joints (8) near the liquid inlet (5), the liquid outlet (6) and in the middle of the flow channel (3).

7. A hydraulic loading flow test device according to claim 2, characterized in that: A pressure measuring hose (12) is connected between the pressure gauge (14) and the pressure measuring joint (8).

8. The hydraulic loading flow test device according to claim 1, characterized in that: A plurality of wheels (13) are installed at the bottom of the machine body (1).

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