An integrated test system and method for integrated control valves

Abstract

The present application belongs to the field of aviation electro-hydraulic pressure, and relates to an integrated test system and a test method for an integrated control valve. The integrated test system comprises an integrated control valve to be tested, an electric control system, a hydraulic system and a pneumatic system. The electric control system, the hydraulic system and the pneumatic system are connected with the integrated control valve respectively. The electric control system provides electric control instructions for the integrated control valve. The pneumatic system drives a mechanical link of the integrated control valve to provide mechanical instructions. The hydraulic system provides a rated oil supply pressure source for the integrated control valve. The present application provides an automatic integrated test function for the integrated control valve. The product does not need to be repeatedly disassembled and assembled, and all functional performance tests can be completed at one time, thereby avoiding the traditional test of repeatedly disassembling and assembling the integrated control valve, the hydraulic pipeline and the electrical equipment. The test efficiency is high, and the automatic test avoids the repeated manual operation of the mechanical link.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aviation electro-hydraulic, and relates to an integrated test system and a test method for an integrated control valve, which are used for testing the function and performance of the integrated control valve. BACKGROUND

[0002] As an important accessory of the aircraft flight control system, the integrated control valve receives the electrical control and mechanical instructions of the aircraft and converts them into specific hydraulic flow output, which finally drives the rear-end actuator to control the aircraft rudder to realize the flight of the aircraft according to the control instructions. Therefore, the integrated control valve plays an important role in the attitude control of the aircraft.

[0003] The function and performance test of the early integrated control valve is divided into output flow test, internal leakage test, electrical input test, manual mechanical input test and dynamic characteristic test. Each test needs to be connected with hydraulic pipes and electrical equipment separately, and the mechanical input test is tested manually by workers, which is low in efficiency and easy to cause damage to the product due to repeated disassembly and assembly. SUMMARY

[0004] To solve the above problems, the integrated test system and the test method for the integrated control valve provided by the present application can complete the automatic test of all function and performance of the integrated control valve through one-time installation, and all processes are controlled by electricity without manual test by workers, which is simple in operation, high in efficiency and test data is directly recorded in the system without manual reading.

[0005] The technical scheme adopted by the present application is as follows:

[0006] An integrated test system for an integrated control valve, comprising a tested integrated control valve, an electric control system 1, a hydraulic system 2 and a pneumatic system 3, wherein the electric control system 1, the hydraulic system 2 and the pneumatic system 3 are connected with the integrated control valve respectively.

[0007] The electric control system 1 provides electrical control instructions for the integrated control valve.

[0008] The pneumatic system 3 drives the mechanical connecting rod of the integrated control valve to provide mechanical instructions.

[0009] The hydraulic system 2 provides a rated oil supply pressure source for the integrated control valve.

[0010] Further, the electric control system 1 comprises a digital controller 1.1, a stabilized power supply 1.2, a motor driver 1.3 and five relays 1.4, wherein the five relays 1.4 include relay one to relay five, the digital controller 1.1 and the stabilized power supply 1.2 are connected with the five relays 1.4, and the five relays 1.4 are connected to the electromagnetic valve of the integrated control valve.

[0011] The motor driver 1.3 is connected with the digital controller 1.1 and the stabilized power supply 1.2, and the motor driver 1.3 is connected to the motor of the integrated control valve.

[0012] Further, the hydraulic system comprises an oil source 2.1, two hydraulic electromagnetic reversing valves 2.2, four electromagnetic valves 2.3, four pressure transmitters 2.4, and four flow meters 2.5.

[0013] The oil source 2.1 is connected to the system oil inlet P of the integrated control valve through a hydraulic pipeline, and the electromagnetic valve one and the pressure transmitter one are arranged on the hydraulic pipeline.

[0014] The oil return port is connected to the system oil return port T of the integrated control valve through a hydraulic pipeline, and the electromagnetic valve two and the pressure transmitter two are arranged on the hydraulic pipeline.

[0015] The oil return port is connected to the positive flow port A and the negative flow port B of the integrated control valve through two hydraulic pipelines, respectively, and the flow meter two, the flow meter three, the hydraulic electromagnetic reversing valve one, the hydraulic electromagnetic reversing valve two, the electromagnetic valve three, the electromagnetic valve four, the pressure transmitter three, and the pressure transmitter four are arranged on the two hydraulic pipelines, respectively.

[0016] The hydraulic electromagnetic reversing valve 2.2, the electromagnetic valve 2.3, the pressure transmitter 2.4, and the flow meter 2.5 are connected with the digital controller 1.1 to receive the control instructions of the digital controller 1.1 and feedback digital / analogue signals.

[0017] Further, the pneumatic system comprises a gas source 3.1 and two gas cylinders 3.2, two gas pressure electromagnetic reversing valves 3.3, and the gas source 3.1 supplies gas to the gas pressure electromagnetic reversing valve one and the gas pressure electromagnetic reversing valve two through two pipelines, respectively.

[0018] Further, the hydraulic cut-off valve opening / closing function test method, the static performance test method, the mechanical input performance test method, the output flow direction test method, the internal leakage test method, and the dynamic characteristic test method are included.

[0019] Test method of integrated test system, hydraulic cut-off valve opening / closing function test method: the hydraulic system provides rated oil supply pressure oil source for the integrated control valve, the electric control system digital controller 1.1 gives the motor driver 1.3 instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening / closing instruction, and feedback the cut-off valve to the digital controller 1.1, complete the test.

[0020] Static performance test method: the hydraulic system provides rated oil supply pressure oil source for the integrated control valve, the electric control system digital controller 1.1 gives the motor driver 1.3 instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in the open state, through the digital controller 1.1 control hydraulic electromagnetic reversing valve one, hydraulic electromagnetic reversing valve two, make the integrated control valve forward flow port A, B and flowmeter four in series, at the same time give the relay one, relay two control instruction to open electromagnetic valve A, B, at this time the integrated control valve output port A output hydraulic flow through flowmeter four flow back to output port B, digital controller 1.1 collects the flow record of flowmeter four as the high-speed flow of integrated control valve, further, digital controller 1.1 gives the relay five control instruction, opens the integrated control valve speed control electromagnetic valve, digital controller 1.1 collects the flow record of flowmeter four as the low-speed flow of integrated control valve.

[0021] Mechanical input performance test method: the hydraulic system provides rated oil supply pressure oil source for the integrated control valve, the electric control system digital controller 1.1 gives the motor driver 1.3 instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in the open state, through the digital controller 1.1 control hydraulic electromagnetic reversing valve one, hydraulic electromagnetic reversing valve two, make the integrated control valve forward flow port A, B and flowmeter four in series, at the same time give the pneumatic system pneumatic electromagnetic reversing valve one, pneumatic electromagnetic reversing valve two movement instruction signal, drive mechanical input connecting rod A, B clockwise, counterclockwise movement, when clockwise movement to the position, integrated control valve output port A output hydraulic flow through flowmeter four flow back to output port B, when counterclockwise movement to the position, integrated control valve output port B output hydraulic flow through flowmeter four flow back to output port A, digital controller [1.1] reads the flow direction of flowmeter four and compares with the given pneumatic electromagnetic reversing valve 3.3 signal, records the output flow and direction.

[0022] Output flow direction test method:

[0023] The hydraulic system provides rated oil supply pressure source for the integrated control valve, the digital controller 1.1 of the electric control system gives the motor driver 1.3 an instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in an open state, the digital controller 1.1 tests the output flow direction of the integrated control valve by giving specific control signals to control the integrated control valve solenoid valve and mechanical input connecting rod, and the output flow direction is fed back to the digital controller 1.1 for data recording after being collected by the flow meter four, and the specific test sequence is shown in Table 1;

[0024] Table 1: Flow direction of integrated control valve

[0025]

[0026]

[0027] Note: In Table 1:

[0028] ①On is the open state of the solenoid valve, and OFF is the disconnected state of the solenoid valve;

[0029] ②A→B is that the output flow flows out from the flow port A and flows into the flow port B, and B→A is that the output flow flows out from the flow port B and flows into the flow port A.

[0030] Internal leakage test: The hydraulic system provides rated oil supply pressure source for the integrated control valve, the digital controller 1.1 of the electric control system gives the motor driver 1.3 an instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in an open state, the digital controller 1.1 tests the output flow direction of the integrated control valve by giving specific control signals to control the integrated control valve solenoid valve and mechanical input connecting rod, and the output flow direction is fed back to the digital controller 1.1 for data recording after being collected by the flow meter four, and the specific test sequence is shown in Table 1;

[0031] At this time, according to states 1-5 in Table 2, the digital controller 1.1 gives the relay one-five control signals as shown in Table 2 to make the integrated control valve in different states, and in each state, the internal leakage of the integrated control valve T port is measured by the flow meter one, the internal leakage of the integrated control valve A port is measured by the flow meter two, and the internal leakage of the integrated control valve B port is measured by the flow meter three;

[0032] Further, the digital controller 1.1 controls the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two to connect the integrated control valve forward flow ports A and B in series with the flow meter four, according to states 6-10 and 14 in Table 2, the digital controller 1.1 gives the relay one-five control signals as shown in Table 2 to make the integrated control valve in different states, and in each state, the internal leakage of the integrated control valve T port is measured by the flow meter one;

[0033] Further, the digital controller 1.1 controls the hydraulic electromagnetic valve three and the electromagnetic valve four to make the integrated control valve forward flow ports A and B close, and according to the state 11 to the state 13 and the state 15 in Table 2, the integrated control valve is in different states by the control signals of the digital controller 1.1 to the relay one to the relay five as shown in Table 2, and the integrated control valve T port leakage is measured by the flowmeter one in each state.

[0034] Further, the digital controller 1.1 gives the motor driver 1.3 a driving integrated control valve motor instruction to drive the hydraulic cut-off valve to execute the closing instruction, so that the cut-off valve is in the closed state, and according to the state 16 in Table 2, the integrated control valve T port leakage is measured by the flowmeter one through the closing control signals of the digital controller 1.1 to the relay one to the relay five as shown in Table 2.

[0035] Table 2 Integrated control valve leakage test

[0036]

[0037] Note: In Table 2, ① On is the open state of the electromagnetic valve, and OFF is the disconnected state of the electromagnetic valve.

[0038] Dynamic characteristic test: The hydraulic system provides a rated oil supply pressure source for the integrated control valve, the digital controller 1.1 of the electric control system gives the motor driver 1.3 a driving integrated control valve motor instruction to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in the open state, the digital controller 1.1 controls the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two to make the integrated control valve forward flow ports A and B in series with the flowmeter four, and at the same time, the relay one and the relay two are controlled to open the electromagnetic valves A and B, at this time, the integrated control valve output port A outputs hydraulic flow through the flowmeter four and flows back to the output port B, the digital controller 1.1 gives the relay five a control signal to control the integrated control valve speed control electromagnetic valve to complete high and low flow switching, and the digital controller 1.1 reads the response of the flowmeter four and compares it with the speed control electromagnetic valve control signal, and records the response time and flow overshoot.

[0039] The present application has the following advantages:

[0040] (1) An automatic integrated test function for the integrated control valve is provided;

[0041] (2) The product does not need to be repeatedly disassembled, and all functional performance tests can be completed at one time, avoiding the repeated disassembly of the traditional test integrated control valve, hydraulic pipeline and electrical equipment;

[0042] (3) The test efficiency is high, and the automatic test avoids repeated manual operation of the mechanical connecting rod. BRIEF DESCRIPTION OF DRAWINGS

[0043] Figure 1 is a structural schematic diagram of the integrated test system of the present application;

[0044] Among them, 1: electric control system, 2: hydraulic system, 3: pneumatic system, 1.1: digital controller, 1.2: stabilized power supply, 1.3: motor driver, 1.4: relay; 2.1: oil source, 2.2: hydraulic electromagnetic reversing valve, 2.3: electromagnetic valve, 2.4: pressure transmitter, 2.5: flowmeter; 3.1: air source, 3.2: air cylinder, 3.3: air pressure electromagnetic reversing valve. DETAILED DESCRIPTION

[0045] The present application is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0046] As Figure 1 shown, an integrated test system for integrated control valve, including the integrated control valve to be tested, further including electric control system 1, hydraulic system 2, pneumatic system 3, the electric control system 1, hydraulic system 2, pneumatic system 3 are connected with integrated control valve respectively;

[0047] Among them, the electric control system 1 provides electric control instruction for integrated control valve;

[0048] Pneumatic system 3 drives integrated control valve mechanical connecting rod to provide mechanical instruction;

[0049] Hydraulic system 2 provides rated oil supply pressure oil source for integrated control valve.

[0050] Further, the electric control system 1 includes digital controller 1.1, stabilized power supply 1.2, motor driver 1.3, relay 1.4, the relay 1.4 has 5, including relay one~relay five, digital controller 1.1, stabilized power supply 1.2 are connected with 5 relays 1.4, 5 relays 1.4 are connected to the electromagnetic valve of integrated control valve;

[0051] The motor driver 1.3 is connected to the motor of integrated control valve.

[0052] Further, the hydraulic system includes oil source 2.1, hydraulic electromagnetic reversing valve 2.2, the hydraulic electromagnetic reversing valve 2.2 has 2, including hydraulic electromagnetic reversing valve one, hydraulic electromagnetic reversing valve two, electromagnetic valve 2.3, the electromagnetic valve 2.3 has 4, including electromagnetic valve one~electromagnetic valve four, pressure transmitter 2.4, the pressure transmitter 2.4 has 4, including pressure transmitter one~pressure transmitter four, flowmeter 2.5, the flowmeter 2.5 has 4, including flowmeter one~flowmeter four, oil return port;

[0053] Wherein, the oil source 2.1 is connected to the system oil inlet P of the integrated control valve through a hydraulic pipeline, and an electromagnetic valve one and a pressure transmitter one are arranged on the hydraulic pipeline;

[0054] The oil return port is connected to the system oil return port T of the integrated control valve through a hydraulic pipeline, and an electromagnetic valve two and a pressure transmitter two and a flow meter one are arranged on the hydraulic pipeline;

[0055] The oil return port is connected to the positive flow port A and the negative flow port B of the integrated control valve through two hydraulic pipelines, respectively, and a flow meter two, a flow meter three, a hydraulic electromagnetic reversing valve one, a hydraulic electromagnetic reversing valve two, an electromagnetic valve three, an electromagnetic valve four, a pressure transmitter three, and a pressure transmitter four are arranged on the two hydraulic pipelines, and the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two on the two hydraulic pipelines are further connected through a fourth flow meter;

[0056] The hydraulic electromagnetic reversing valve 2.2, the electromagnetic valve 2.3, the pressure transmitter 2.4, and the flow meter 2.5 are connected with the digital controller 1.1, receive the control instructions of the digital controller 1.1, and feedback digital / analogue signals.

[0057] Further, the pneumatic system includes a gas source 3.1 and a cylinder 3.2, the cylinder 3.2 has two, including cylinder one and cylinder two, and a pneumatic electromagnetic reversing valve 3.3, the pneumatic electromagnetic reversing valve 3.3 has two, including pneumatic electromagnetic reversing valve one and pneumatic electromagnetic reversing valve two, the gas source 3.1 supplies gas to the pneumatic electromagnetic reversing valve one and the pneumatic electromagnetic reversing valve two through two pipelines, respectively, the pneumatic electromagnetic reversing valve one and the pneumatic electromagnetic reversing valve two are connected with the cylinder one and the cylinder two, respectively, and the cylinder one and the cylinder two are connected with the mechanical input connecting rod A and the mechanical input connecting rod B of the integrated control valve, respectively.

[0058] Further, the test method includes a hydraulic shut-off valve opening / closing function test method, a static performance test method, a mechanical input performance test method, an output flow direction test method, an internal leakage test method, and a dynamic characteristic test method.

[0059] The test method of the integrated test system is as follows: the hydraulic system provides a rated oil supply pressure oil source for the integrated control valve, the digital controller 1.1 of the electric control system gives an instruction to the motor driver 1.3 to drive the integrated control valve motor to drive the hydraulic shut-off valve to execute the opening / closing instruction, and the in-place signal and the time of the shut-off valve are fed back to the digital controller 1.1, and the test is completed.

[0060] Static performance test method: the hydraulic system provides rated oil supply pressure for the integrated control valve, the digital controller 1.1 of the electric control system gives the motor driver 1.3 an instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in the open state, the digital controller 1.1 controls the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two to make the integrated control valve forward flow ports A and B connected in series with the flowmeter four, and at the same time, the digital controller 1.1 controls the relay one and the relay two to open the electromagnetic valves A and B, at this time, the integrated control valve output port A outputs hydraulic flow through the flowmeter four and flows back to the output port B, and the digital controller 1.1 collects the flow record of the flowmeter four as the high-speed flow of the integrated control valve, further, the digital controller 1.1 gives the relay five a control instruction to open the speed control electromagnetic valve of the integrated control valve, and the digital controller 1.1 collects the flow record of the flowmeter four as the low-speed flow of the integrated control valve.

[0061] Mechanical input performance test method: the hydraulic system provides rated oil supply pressure for the integrated control valve, the digital controller 1.1 of the electric control system gives the motor driver 1.3 an instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in the open state, the digital controller 1.1 controls the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two to make the integrated control valve forward flow ports A and B connected in series with the flowmeter four, and at the same time, the digital controller 1.1 controls the relay one and the relay two to open the electromagnetic valves A and B, at this time, the integrated control valve output port A outputs hydraulic flow through the flowmeter four and flows back to the output port B, when the clockwise motion is in place, the integrated control valve output port A outputs hydraulic flow through the flowmeter four and flows back to the output port B, when the counterclockwise motion is in place, the integrated control valve output port B outputs hydraulic flow through the flowmeter four and flows back to the output port A, the digital controller 1.1 reads the flow direction of the flowmeter four and compares it with the given signal of the pneumatic electromagnetic reversing valve 3.3, and records the output flow and direction.

[0062] Output flow direction test method:

[0063] The hydraulic system provides rated oil supply pressure for the integrated control valve, the digital controller 1.1 of the electric control system gives the motor driver 1.3 an instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in the open state, the digital controller 1.1 controls the integrated control valve electromagnetic valve and the mechanical input link by giving a specific control signal to test the output flow direction of the integrated control valve, the output flow direction is collected by the flowmeter four and fed back to the digital controller 1.1 for data recording, the specific test sequence is shown in Table 1.

[0064] Table 1 Integrated control valve flow direction

[0065]

[0066]

[0067] Note: Table 1:

[0068] ①On is the open state of the electromagnetic valve, OFF is the open state of the electromagnetic valve;

[0069] ②A→B is the output flow from the flow port A, by the flow port B, B→A is the output flow from the flow port B, by the flow port A.

[0070] Leakage test: the hydraulic system provides the rated oil supply pressure source for the integrated control valve, the digital controller 1.1 gives the motor driver 1.3 instruction to drive the integrated control valve motor to drive the hydraulic shut-off valve to execute the open instruction, so that the shut-off valve is in the open state, the digital controller 1.1 controls the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two, so that the integrated control valve positive flow port A and B are connected through the flowmeter two and the flowmeter three respectively to return oil;

[0071] At this time, according to table 2 state 1~state 5, through the digital controller 1.1 respectively gives the relay one~relay five as shown in table 2 control signal makes the integrated control valve in different state, and in each state through the flowmeter one measures the integrated control valve T port leakage, through the flowmeter two measures the integrated control valve A port leakage, through the flowmeter three measures the integrated control valve B port leakage;

[0072] Further, the digital controller 1.1 controls the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two, so that the integrated control valve positive flow port A and B are connected in series with the flowmeter four, according to table 2 state 6~state 10, state 14, through the digital controller 1.1 respectively gives the relay one~relay five as shown in table 2 control signal makes the integrated control valve in different state, and in each state through the flowmeter one measures the integrated control valve T port leakage;

[0073] Further, the digital controller 1.1 controls the hydraulic electromagnetic valve three and the electromagnetic valve four, so that the integrated control valve positive flow port A and B are closed, according to table 2 state 11~state 13, state 15, through the digital controller 1.1 respectively gives the relay one~relay five as shown in table 2 control signal makes the integrated control valve in different state, and in each state through the flowmeter one measures the integrated control valve T port leakage.

[0074] Further, the digital controller 1.1 gives the motor driver 1.3 instruction to drive the integrated control valve motor to drive the hydraulic shut-off valve to execute the close instruction, so that the shut-off valve is in the closed state, according to table 2 state 16, through the digital controller 1.1 gives the relay one~relay five as shown in table 2 close control signal, through the flowmeter one measures the integrated control valve T port leakage;

[0075] Table 2 integrated control valve leakage test

[0076]

[0077] Note: In Table 2, ① On is the open state of the electromagnetic valve, OFF is the off state of the electromagnetic valve;

[0078] Dynamic characteristic test: The hydraulic system provides the rated oil supply pressure source for the integrated control valve. The digital controller 1.1 of the electric control system gives the motor driver 1.3 an instruction to drive the integrated control valve motor to drive the hydraulic cut-off valve to execute the opening instruction, so that the cut-off valve is in the open state. The digital controller 1.1 controls the hydraulic electromagnetic reversing valve one and the hydraulic electromagnetic reversing valve two to make the integrated control valve positive flow port A and B and the flowmeter four in series. At the same time, the given relay one and relay two control instructions are opened to open the electromagnetic valves A and B. At this time, the integrated control valve output port A outputs the hydraulic flow through the flowmeter four and flows back to the output port B. The digital controller 1.1 gives the relay five control signal to control the integrated control valve speed control electromagnetic valve to complete the high and low flow switching. The digital controller [1.1] reads the response of the flowmeter four and compares it with the speed control electromagnetic valve control signal to record the response time and flow overshoot.

[0079] The above description of the embodiments is to facilitate the understanding and application of the present application by those skilled in the art. Those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described herein to other embodiments without creative labor. Therefore, the present application is not limited to the embodiments herein, and the improvements and modifications made by those skilled in the art according to the disclosure of the present application without departing from the scope of the present application should be within the scope of protection of the present application.

Claims

1. An integrated testing system for integrated control valves, comprising the integrated control valve under test, characterized in that: It also includes an electronic control system (1), a hydraulic system (2), and a pneumatic system (3), wherein the electronic control system (1), the hydraulic system (2), and the pneumatic system (3) are respectively connected to an integrated control valve; The electronic control system (1) provides electronic control commands to the integrated control valve; The pneumatic system (3) drives the integrated control valve mechanical linkage to provide mechanical commands; The hydraulic system (2) provides a rated oil supply pressure source for the integrated control valve; The electronic control system (1) includes a digital controller (1.1), a regulated power supply (1.2), a motor driver (1.3), and relays (1.4). There are 5 relays (1.4), including relay one to relay five. The digital controller (1.1) and the regulated power supply (1.2) are connected to the 5 relays (1.4), and the 5 relays (1.4) are connected to the solenoid valve of the integrated control valve. The motor drivers (1.3) are all connected to the digital controller (1.1) and the regulated power supply (1.2). The motor drivers (1.3) are connected to the motor of the integrated control valve. The hydraulic system includes an oil source (2.1), a hydraulic solenoid directional valve (2.2), two hydraulic solenoid directional valves (2.2), including hydraulic solenoid directional valve one and hydraulic solenoid directional valve two, a solenoid valve (2.3), four solenoid valves (2.3), including solenoid valve one to solenoid valve four, a pressure transmitter (2.4), four pressure transmitters (2.4), including pressure transmitter one to pressure transmitter four, a flow meter (2.5), four flow meters (2.5), including flow meter one to flow meter four, and an oil return port. The oil source (2.1) is connected to the system inlet P of the integrated control valve through a hydraulic pipeline. Solenoid valve one and pressure transmitter one are installed on this hydraulic pipeline. The return port is connected to the system return port T of the integrated control valve via a hydraulic line. This hydraulic line is equipped with a solenoid valve 2, a pressure transmitter 2, and a flow meter 1. The return port is connected to the positive flow port A and negative flow port B of the integrated control valve through two hydraulic lines. One hydraulic line is equipped with flow meter 2, hydraulic solenoid directional valve 1, solenoid valve 3 and pressure transmitter 3, and the other hydraulic line is equipped with flow meter 3, hydraulic solenoid directional valve 2, solenoid valve 4 and pressure transmitter 4. The hydraulic solenoid directional valve 1 and hydraulic solenoid directional valve 2 on the two hydraulic lines are also connected through a fourth flow meter. The hydraulic solenoid directional valve (2.2), solenoid valve (2.3), pressure transmitter (2.4) and flow meter (2.5) are all connected to the digital controller (1.1) to receive the control commands of the digital controller (1.1) and feed back digital / analog signals.

2. The integrated testing system for integrated control valves according to claim 1, characterized in that, The pneumatic system includes an air source (3.1) and cylinders (3.2); there are two cylinders (3.2), including cylinder one and cylinder two, and two pneumatic solenoid directional valves (3.3), including pneumatic solenoid directional valve one and pneumatic solenoid directional valve two. The air source (3.1) supplies air to pneumatic solenoid directional valve one and pneumatic solenoid directional valve two through two pipelines respectively. Pneumatic solenoid directional valve one and pneumatic solenoid directional valve two are respectively connected to cylinder one and cylinder two in a one-to-one correspondence. Cylinder one and cylinder two are respectively connected to mechanical input linkage A and mechanical input linkage B of the integrated control valve in a one-to-one correspondence.

3. The testing method for the integrated testing system according to claim 2, characterized in that, This includes test methods for the opening / closing function of hydraulic shut-off valves, static performance test methods, mechanical input performance test methods, output flow direction test methods, internal leakage test methods, and dynamic characteristic test methods.

4. The testing method of the integrated testing system according to claim 3, characterized in that, Hydraulic shut-off valve opening / closing function test method: The hydraulic system provides the rated oil supply pressure to the integrated control valve. The digital controller (1.1) of the electronic control system gives the motor driver (1.3) the instruction to drive the motor of the integrated control valve to drive the hydraulic shut-off valve to execute the opening / closing instruction, and feeds back the shut-off valve position signal and time to the digital controller (1.1) to complete the test.

5. The testing method of the integrated testing system according to claim 4, characterized in that, Static performance test method: The hydraulic system provides the rated oil supply pressure source for the integrated control valve. The digital controller (1.1) of the electronic control system gives the motor driver (1.3) the instruction to drive the motor of the integrated control valve to drive the hydraulic shut-off valve to execute the opening instruction, so that the shut-off valve is in the open state. The digital controller (1.1) controls the hydraulic solenoid directional valve one and the hydraulic solenoid directional valve two of the hydraulic system, so that the positive flow port A and the negative flow port B of the integrated control valve are connected in series with the flow meter four. At the same time, the control instructions of relay one and relay two are given to open the solenoid valves A and B. At this time, the hydraulic flow output from the positive flow port A of the integrated control valve flows back to the negative flow port B through the flow meter four. The digital controller (1.1) collects the flow record of the flow meter four as the high-speed flow of the integrated control valve. Further, the digital controller (1.1) gives the control instruction of relay five to open the speed control solenoid valve of the integrated control valve. The digital controller (1.1) collects the flow record of the flow meter four as the low-speed flow of the integrated control valve.

6. The testing method of the integrated testing system according to claim 5, characterized in that, Mechanical input performance test method: The hydraulic system provides the rated oil supply pressure source for the integrated control valve. The digital controller (1.1) of the electronic control system gives the motor driver (1.3) the instruction to drive the motor of the integrated control valve to drive the hydraulic shut-off valve to execute the opening instruction, so that the shut-off valve is in the open state. The digital controller (1.1) controls the hydraulic solenoid directional valve one and hydraulic solenoid directional valve two of the hydraulic system, so that the positive flow port A and negative flow port B of the integrated control valve are connected in series with the flow meter four. At the same time, the pneumatic system gives the pneumatic solenoid directional valve one and pneumatic solenoid directional valve two the movement instruction signal, which drives the mechanical input linkage A and B to move clockwise and counterclockwise. When the clockwise movement is in place, the hydraulic flow output from the positive flow port A of the integrated control valve flows back to the negative flow port B through the flow meter four. When the counterclockwise movement is in place, the hydraulic flow output from the negative flow port B of the integrated control valve flows back to the positive flow port A through the flow meter four. The digital controller (1.1) reads the flow direction of the flow meter four and compares it with the given pneumatic solenoid directional valve (3.3) signal, and records the output flow and direction.

7. The testing method of the integrated testing system according to claim 6, characterized in that, Output flow direction test method: The hydraulic system provides the rated oil supply pressure to the integrated control valve. The digital controller (1.1) of the electronic control system gives the motor driver (1.3) an instruction to drive the motor of the integrated control valve to drive the hydraulic shut-off valve to execute the opening instruction, so that the shut-off valve is in the open state. The digital controller (1.1) controls the solenoid valve and mechanical input linkage of the integrated control valve by giving a specific control signal to test the output flow direction of the integrated control valve. The output flow direction is collected by the flow meter and fed back to the digital controller (1.1) for data recording. The specific test sequence is detailed in Table 1; Table 1 Flow direction of integrated control valve Note: In Table 1: ①On means the solenoid valve is open, and OFF means the solenoid valve is closed; ②A→B means the output flow flows out from the positive flow port A and into the negative flow port B, and B→A means the output flow flows out from the negative flow port B and into the positive flow port A.

8. The testing method of the integrated testing system according to claim 7, characterized in that, Internal leakage test: The hydraulic system provides the rated oil supply pressure to the integrated control valve. The digital controller (1.1) of the electronic control system gives the motor driver (1.3) the instruction to drive the motor of the integrated control valve to drive the hydraulic shut-off valve to execute the opening instruction, so that the shut-off valve is in the open state. The digital controller (1.1) controls the hydraulic solenoid directional valve one and the hydraulic solenoid directional valve two of the hydraulic system, so that the positive flow port A and the negative flow port B of the integrated control valve are connected to the return oil through the flow meter two and the flow meter three respectively. At this time, according to the states 1 to 5 in Table 2, the digital controller ( 1.1) Given control signals to relays one through five as shown in Table 2, the integrated control valve is in different states. In each state, the internal leakage at port T of the integrated control valve is measured by flow meter one, the internal leakage at the positive flow port A of the integrated control valve is measured by flow meter two, and the internal leakage at the negative flow port B of the integrated control valve is measured by flow meter three. Further, the digital controller (1.1) controls the hydraulic solenoid directional valve one and the hydraulic solenoid directional valve two of the hydraulic system to connect the positive flow port A and the negative flow port B of the integrated control valve in series with flow meter four, according to states 6 through 5 in Table 2. In states 10 and 14, the digital controller (1.1) provides control signals to relays one through five as shown in Table 2, causing the integrated control valve to be in different states. In each state, the internal leakage at port T of the integrated control valve is measured using flow meter one. Furthermore, the digital controller (1.1) controls hydraulic solenoid valves three and four of the hydraulic system to close the positive flow port A and negative flow port B of the integrated control valve. According to states 11 through 13 and 15 in Table 2, the digital controller (1.1) provides control signals to relays one through five as shown in Table 2, causing the integrated control valve to be in different states. In each state, the internal leakage at port T of the integrated control valve is measured using flow meter one. Furthermore, the digital controller (1.1) sends a command to the motor driver (1.3) to drive the integrated control valve motor to execute a closing command on the hydraulic shut-off valve, causing the shut-off valve to be in the closed state. According to state 16 in Table 2, the digital controller (1.1) provides closing control signals to relays one through five as shown in Table 2, and the internal leakage at port T of the integrated control valve is measured using flow meter one. Table 2: Internal Leakage Test of Integrated Control Valve. Note: In Table 2, ①On indicates the solenoid valve is open, and OFF indicates the solenoid valve is closed. Dynamic characteristic test: The hydraulic system provides the rated oil supply pressure to the integrated control valve. The digital controller (1.1) of the electronic control system gives the motor driver (1.3) the instruction to drive the motor of the integrated control valve to drive the hydraulic shut-off valve to execute the opening instruction, so that the shut-off valve is in the open state. The digital controller (1.1) controls the hydraulic solenoid directional valve one and the hydraulic solenoid directional valve two of the hydraulic system, so that the positive flow port A and the negative flow port B of the integrated control valve are connected in series with the flow meter four. At the same time, the control instructions of relay one and relay two are given to open the solenoid valves A and B. At this time, the hydraulic flow output from the positive flow port A of the integrated control valve flows back to the negative flow port B through the flow meter four. The digital controller (1.1) gives the control signal of relay five to control the speed control solenoid valve of the integrated control valve to complete the high and low flow switching. The digital controller (1.1) reads the response of the flow meter four and compares it with the control signal of the speed control solenoid valve, and records the response time and flow overshoot.

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