Hydraulic component testing device and testing method

Abstract

The invention belongs to the field of hydraulic component testing, and particularly relates to a hydraulic component testing device and method, and the device comprises a workbench which is used for fixing a hydraulic component; the power source control module comprises an oil supply tank, a power pump, an oil supply pipe connected with an oil outlet of the power pump, an oil return pipe connected with the oil supply tank and a pump relay electrically connected with the power pump, and an inlet and an outlet of the hydraulic component are connected with the oil supply pipe and the oil return pipe respectively; the output pressure of a hydraulic component and the pressure of a power pump can be displayed, meanwhile, the pressure of an internal throttle valve is displayed, the pressure supply condition can be conveniently observed at any time, a P port pressure gauge and a T port pressure gauge display the pressure value actually provided for the tested hydraulic component and the pressure value in an oil return pipe, transparent operation of an oil supply end, a control end, a tested end and an oil return end is guaranteed, and the oil supply efficiency is improved. The controllability of the system is improved, it is guaranteed that hydraulic part testing is completed in the preassembling stage, safety and operability are improved, and guarantee is provided for subsequent joint debugging of the whole equipment.

Description

Technical Field

[0001] The invention belongs to the field of hydraulic component testing, and in particular relates to a hydraulic component testing device and a testing method. Background Art

[0002] The mechanical parts of deep-sea operation robots are driven by hydraulic power. The delivery test of hydraulic parts includes leak detection, pressure maintenance, hydraulic action, etc. If the hydraulic parts are found to have leakage or other problems during the delivery test, the entire part needs to be disassembled for repair. Since deep-sea operation robots are mostly compact in design and have limited installation space, the hydraulic parts that need to be repaired need to be disassembled together with the peripheral connection parts, which requires a lot of work and affects the delivery test progress of the entire equipment.

[0003] Therefore, hydraulic components need to be tested during the pre-installation stage. The pressure of the hydraulic oil required for the test ranges from 6 bar to 300 bar, depending on the working conditions of the hydraulic components. When the hydraulic components are connected to the operating console for testing, if a leak occurs, the hydraulic oil splashes out, which is very dangerous to the testers. The leaked hydraulic oil will also increase the workload of subsequent cleaning work. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hydraulic component testing device and testing method to solve the problem of testing the hydraulic components of existing deep-sea operation robots in the pre-installation stage, ensure that the hydraulic component testing is completed in the pre-installation stage, and improve safety and operability.

[0005] The present invention provides a hydraulic component testing device and a testing method, comprising: A workbench is used to fix the hydraulic components. The hydraulic component A1 has oil outlets A, B, P and T, and is respectively connected with pressure gauges at port A, port B, port P and port T; A power source control module, the power source control module comprising: an oil supply tank, a power pump, an oil supply pipe connected to the oil outlet of the power pump, an oil return pipe connected to the oil supply tank, and a pump relay electrically connected to the power pump, wherein the inlet and outlet of the hydraulic component are respectively connected to the oil supply pipe and the oil return pipe; A pressure output control module, the pressure output control module comprises: a throttle valve connected to the oil supply pipe, a flow meter and an oil supply pressure meter.

[0006] Optionally, the pressure output control module further includes a control valve A and a control valve B for controlling the pressure of the oil supply pipe and the oil return pipe respectively.

[0007] Optionally, the pressure output control module further includes a cooler and a thermometer installed inside the console, and the cooler is connected to the oil return pipeline.

[0008] Optionally, the pressure output control module also includes a heater installed in the oil supply tank.

[0009] Optionally, the test bench distribution box supplies power to four relays, which in turn can supply power to the solenoid valves.

[0010] Optionally, the oil outlet of the power pump is provided with a relief valve, and a filter is provided on the oil supply pipe between the power pump and the throttle valve.

[0011] Optionally, the hydraulic component testing device also includes a manual pump mechanism, which includes a manual pump, a manual pump pressure gauge and a one-way valve. The outlet of the manual pump, the manual pump pressure gauge and the one-way valve are connected in series with the oil supply pipe through pipelines, and the inlet of the manual pump is connected to the oil supply tank through a pipeline.

[0012] Optionally, the workbench includes: a movable platform, a protective frame arranged on the movable platform, a sliding door is arranged on the protective frame, and an oil tank is arranged on the movable platform.

[0013] Optionally, the hydraulic component testing device also includes a console, and the power source control module and the pressure output control module are installed on the console. The console is also equipped with a power switch, a power pump start switch, a power pump stop switch, a cooler switch, a heater switch, a relay power supply switch, a pressure control terminal, a flow control terminal and an emergency stop button.

[0014] The present invention provides a hydraulic component testing method, using the hydraulic component testing device, comprising the following steps: Place the hydraulic component to be tested on the workbench, connect the oil supply pipe and the oil return pipe, connect the relay power line to the relay of the hydraulic component to be tested, and close the sliding door; Turn on the power switch to power on the system, press the motor start switch, the oil pump sends the hydraulic oil into the pipeline, and the instruments in the left monitoring area begin to display their own values. Observe whether the values ​​displayed by each instrument are normal; If the value is normal, adjust the pressure control port and flow control port, change the internal control valve A and control valve B to adjust the output pressure and flow to reach the measured value, observe the parameters of the tested hydraulic components, and complete the test; The hydraulic oil passes through the oil supply pipe, enters the pipeline and the hydraulic components under test, and finally returns to the oil storage chamber through the oil return pipe.

[0015] The beneficial effect of the present invention is that the hydraulic component testing device provided by the present invention can display the output pressure of the hydraulic component and the power pump pressure, and at the same time, display the pressure of the internal throttle valve, so as to facilitate the observation of the pressure supply status at any time. The P-port pressure gauge and the T-port pressure gauge display the pressure value actually provided to the hydraulic component under test and the pressure value in the oil return pipe, thereby ensuring the transparent operation of the oil supply end-control end-tested end-oil return end, improving the controllability of the system, ensuring the completion of the hydraulic component test in the pre-installation stage, improving safety and operability, and providing guarantee for the subsequent joint debugging of the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the hydraulic component testing device of the present invention; Figure 2 It is a structural schematic diagram of the control console of the present invention; Figure 3 It is a schematic diagram of the internal hydraulic system of the testing device of the present invention. DETAILED DESCRIPTION

[0017] Port A, port B, port T and port P are respectively the oil outlet A, oil outlet B, oil outlet T and oil outlet P of the hydraulic component A1.

[0018] like Figure 1-3 As shown, the present invention provides a hydraulic component testing device, comprising: Workbench B is used to fix the hydraulic component A1. The hydraulic component A1 has oil outlets A, B, P and T, and is respectively connected with pressure gauges D3 at port A, D4 at port B, D5 at port P and D6 at port T; A power source control module 100, the power source control module comprising: an oil supply tank 110, a power pump 120, an oil supply pipe 130 connected to the oil outlet of the power pump 120, an oil return pipe 140 connected to the oil supply tank 110, a relay D18 electrically connected to the power pump 120, and an inlet and outlet of a hydraulic component A1 are respectively connected to the oil supply pipe 130 and the oil return pipe 140; The pressure output control module 200 includes: a throttle valve 210 connected to the oil supply pipe 130 , a flow meter 220 and an oil supply pressure meter 230 .

[0019] Compared with the prior art, the hydraulic component testing device provided by the present invention can display the output pressure of the hydraulic component A1 and the pressure of the power pump 120, and at the same time, display the pressure of the internal throttle valve 210, so as to facilitate the observation of the pressure supply status at any time. The P-port pressure gauge D5 and the T-port pressure gauge D6 display the pressure value actually provided to the hydraulic component A1 under test and the pressure value in the return oil pipe 140, thereby ensuring the transparent operation of the oil supply end-control end-tested end-return oil end, improving the controllability of the system, ensuring the completion of the hydraulic component test in the pre-installation stage, improving safety and operability, and providing guarantee for the subsequent joint debugging of the entire equipment.

[0020] The right side of the console D contains a power switch D10, a start switch D11, a stop switch D12, a cooler switch D13, a heater switch D14, four parallel dual-channel relay switches D15, a pressure control terminal D16, a flow control terminal D17, a relay D18 and an emergency stop button D19.

[0021] The power source control module 100 is mainly composed of a power pump 120, a cooler 170, an oil tank 110 and other components. The power switch D10 is the main switch, which controls the on and off of the power supply of the entire system. The start switch D11 and the stop switch D12 control the power supply of the power pump 120. After pressing the start switch, the power pump 120 starts to complete the delivery of hydraulic oil. The oil outlet of the power pump 120 is equipped with a relief valve, which plays a protective role when the pressure of the power pump 120 is higher than its set value; the oil tank 110 is provided with a cooler 170. Once the system temperature is too high or too low, the cooler switch D13 and the heater switch D14 can respectively control the working state of the cooler 170 and the heater 180 to adjust the system temperature. After the power is turned on, the relay is powered on. Since the relay power switch is in the off state, the power line of the relay D18 connected to the hydraulic component under test is not powered on. At this time, the relay switch D15 is turned to A or B, and the A channel or B channel of the power line is powered on, and the relay D18 on the hydraulic component A1 under test starts to be powered on. The pressure control terminal D16 and the flow control terminal D17 can continuously adjust the oil supply pressure and flow of the system according to the test requirements. The emergency stop button D19 is an indispensable part of the test system. When there are some crises such as major leakage of personnel or equipment, the emergency stop button can be pressed to reduce personal injury and property loss.

[0022] The pressure output control module 200 and the pump pressure gauge 121 mainly display the output pressure value of the power pump 120 to prevent abnormal oil supply of the power pump 120 and damage to the equipment. A control port overflow valve 150 is provided in the pressure output control module, and the outlet pressure of the power pump 120 is adjusted by adjusting the pressure control terminal D16; after the pressure oil goes out of the power pump 120, it passes through the filter 160, the throttle valve 210, and the flow meter 220 to the P port, and its flow can be controlled by adjusting the flow control terminal D17. The oil flowing through the hydraulic component A1 returns to the oil tank 110 from the T port. The invention is provided with a manual pump mechanism, which includes a manual pump 310, a manual pump pressure gauge 320 and a one-way valve 330. Once the power pump 120 cannot provide pressure normally or the required pressure value / flow is very small, and the power pump 120 is difficult to control, the manual pump mechanism can be used to supply oil to the system. The manual pump pressure gauge 320 displays the output pressure value of the manual pump 120, which can conveniently observe the pressure value at any time and provide the required pressure value. The one-way valve 330 in front of the manual pump can prevent the pressure generated by the manual pump 310 or the power pump 120 during operation from damaging each other. The invention contains control valve A and control valve B, which are used to control the pressure of the oil supply pipe 130 and the oil return pipe 140 respectively. They can be switched and diverted according to different test requirements. When multiple compensators need to be pressurized, multiple AB ports can be enabled at the same time to improve efficiency. For the test of the CBCA pilot balance valve, in order to test the function of its pilot port, an additional A / B port can be connected to its port 3 when its port 1 is connected to an A / B port, so as to achieve the function of single input and multiple outputs. The A port pressure gauge D3 and the B port pressure gauge D4 respectively display the output pressure values ​​of the internal control valve A and the control valve B. The P port pressure gauge D5 and the T port pressure gauge D6 display the pressure values ​​of the oil supply pipe 130 and the oil return pipe 140, and monitor whether there are any abnormalities in the input and return oil at any time. The thermometer displays the temperature inside the system. Once the temperature is too low or too high, the heater 180 or the cooler 170 of the equipment can be started to increase or decrease the temperature to ensure that the internal temperature difference is small and reduce the influence of temperature on the test results.

[0023] The workbench B includes a table top B1, load-bearing casters B2, a sliding door B3, and a frame B4. The table top B1 has an inclination angle B11 and an oil groove B12.

[0024] The hydraulic component A to be tested is placed in advance on the table panel B1 of the workbench B, the sliding door B3 is opened, and the hydraulic component A1 is connected to the control console D through the sliding door B3 via the oil pipeline 130. At this time, the sliding door B3 is closed, and the tester stands between the outer side of the sliding door B3 of the workbench B and the control console D to test the hydraulic component A1. If the hydraulic oil of the hydraulic component A1 leaks during the test operation, since the table panel B1 is installed with an inclination angle B11 set to the oil tank B12 side, the leaked hydraulic oil will flow to the oil tank B12, and finally be recovered to the oil tank B12 for unified treatment; if the hydraulic component A1 leaks under high-pressure test conditions, the sliding door B3 will serve as a protection to block the splashing hydraulic oil from spraying to the side of the operating table, thereby protecting the personal safety of the tester. After the test is completed, the hydraulic component A is put back on the rack. If the workbench B is not used for a long time, it can be moved to a designated location for storage via the load-bearing casters B2.

[0025] The console D is divided into a left monitoring area and a right control area. The left monitoring area contains a power pump 120 pressure gauge D1, a manual pump pressure gauge 330, an A port pressure gauge D3, a B port pressure gauge D4, a P port pressure gauge D5, a T port pressure gauge D6, a thermometer D7 and a flow meter D8, and four relay power supply lines D9 are also distributed. Among them, the A port pressure gauge D3 is used to display the pressure of the oil port A, the B port pressure gauge D4 is used to display the pressure of the oil port B, the P port pressure gauge D5 is used to display the output pressure of the test bench pump, and the T port pressure gauge D6 is used to display the return oil pressure. The test bench distribution box supplies power to four relays D18 through D9, and the four relays D18 can supply power to the solenoid valve.

[0026] A hydraulic component testing method, using the above hydraulic component testing device, comprises the following steps: Place the hydraulic component A1 to be tested on the workbench B, connect the oil supply pipe 130 and the oil return pipe 140, connect the relay power supply line D9 to the relay D18 of the hydraulic component to be tested, and close the sliding door B3; Turn on the power switch D10 to power on the system, press the motor start switch D11, and the power pump 120 will send the hydraulic oil into the pipeline. The instruments in the left monitoring area will start to display their values. Observe whether the values ​​displayed by each instrument are normal. If the value is normal, adjust the pressure control terminal D16 and the flow control terminal D17, change the internal control valve A and the control valve B to adjust the output pressure and flow to reach the measured value, observe the parameters of the hydraulic component A1 to complete the test; The hydraulic oil passes through the oil supply pipe 130 , enters the pipeline and the hydraulic component A1 to be tested, and finally returns to the oil tank 110 through the oil return pipe 140 .

[0027] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0028] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A hydraulic component testing device, characterized in that: include: A workbench is used to fix the hydraulic components. The hydraulic component A1 has oil outlets A, B, P and T, and is respectively connected with pressure gauges at port A, port B, port P and port T; A power source control module, the power source control module comprising: an oil supply tank, a power pump, an oil supply pipe connected to the oil outlet of the power pump, an oil return pipe connected to the oil supply tank, and a pump relay electrically connected to the power pump, wherein the inlet and outlet of the hydraulic component are respectively connected to the oil supply pipe and the oil return pipe; A pressure output control module, the pressure output control module comprises: a throttle valve connected to the oil supply pipe, a flow meter and an oil supply pressure meter.

2. The hydraulic component testing device according to claim 1, characterized in that: The pressure output control module also includes a control valve A and a control valve B.

3. The hydraulic component testing device according to claim 1, characterized in that: The pressure output control module further includes a cooler and a thermometer.

4. The hydraulic component testing device according to claim 3, characterized in that: The pressure output control module also includes a heater.

5. The hydraulic component testing device according to claim 1, characterized in that: Includes four relays.

6. The hydraulic component testing device according to any one of claims 1 to 5, characterized in that: The oil outlet of the power pump is provided with an overflow valve, and the oil supply pipe between the power pump and the throttle valve is provided with a filter.

7. The hydraulic component testing device according to any one of claims 1 to 5, characterized in that: It also includes a manual pump mechanism, which includes a manual pump, a manual pump pressure gauge and a one-way valve. The outlet of the manual pump, the manual pump pressure gauge and the one-way valve are connected in series with the oil supply pipe through a pipeline, and the inlet of the manual pump is connected with the oil supply tank through a pipeline.

8. The hydraulic component testing device according to any one of claims 1 to 5, characterized in that: The workbench comprises: a movable platform, a protection frame arranged on the movable platform, a sliding door is arranged on the protection frame, and an oil tank is arranged on the movable platform.

9. The hydraulic component testing device according to any one of claims 1 to 5, characterized in that: It also includes a console, on which the power source control module and the pressure output control module are installed. The console is also equipped with a power switch, a power pump start switch, a power pump stop switch, a cooler switch, a heater switch, a relay power supply switch, a pressure control terminal, a flow control terminal and an emergency stop button.

10. A method for testing a hydraulic component, characterized in that: Using the hydraulic component testing device according to claim 9 comprises the following steps: Place the hydraulic component to be tested on the workbench, connect the oil supply pipe and the oil return pipe, connect the relay power line to the relay of the hydraulic component to be tested, and close the sliding door; Turn on the power switch to power on the system, press the motor start switch, the oil pump sends the hydraulic oil into the pipeline, and the instruments in the left monitoring area begin to display their own values. Observe whether the values ​​displayed by each instrument are normal; If the value is normal, adjust the pressure control port and flow control port, change the internal control valve A and control valve B to adjust the output pressure and flow to reach the measured value, observe the parameters of the tested hydraulic components, and complete the test; The hydraulic oil passes through the oil supply pipe, enters the pipeline and the hydraulic components under test, and finally returns to the oil storage chamber through the oil return pipe.

Images