Intelligent multifunctional valve performance test system device

Abstract

The invention relates to the technical field of valve performance testing systems, in particular to an intelligent multifunctional valve performance testing system device which comprises a water tank, a liquid level meter and a temperature sensor, the liquid level meter and the temperature sensor are arranged in the water tank, the bottom of the water tank is communicated with a first buffer pipe, and the bottom end of the first buffer pipe is communicated with a second metal pipeline. The middle of the second metal pipeline is sleeved with a first switch valve and a torque sleeve, the outer side of the torque sleeve is fixedly connected with one end of a torque sensor, one end of the torque sensor is fixedly connected with the power output end of the torque robot, and a first automatic clamping device is arranged in the middle of the second metal pipeline. The suction cups are used for carrying, positioning and installing control valves and switch valves, the labor intensity of workers is relieved, and the valve installing efficiency is improved; the computer and the intelligent control software can accurately collect and analyze various performance test data of the valve, so that the automatic control of the test process is realized, a test report is automatically generated, shutdown is carried out under an abnormal condition, and an alarm is given.

Description

Technical Field

[0001] The present invention relates to the technical field of valve performance testing systems, and in particular to an intelligent multifunctional valve performance testing system device. Background Art

[0002] Conventional valve performance testing devices are generally operated manually or semi-automatically. The valve installation is labor-intensive and inefficient, and is mainly manual and mechanical operation. The degree of automation is low, and the debugging and testing time is long. Some test data need to be recorded or calculated manually, and intelligent instruments are not used or sensors are rarely used. There are few test items, and most of them are single performance tests. It is impossible to test complex valve performance, and the test system is unreasonable or has no special design (such as a small flow coefficient test system). The test equipment is not advanced enough, and no automated and intelligent equipment is used. The computer application software is simple and cannot process complex chart data.

[0003] With the development of automation technology, some simple automatic valves have begun to be used in the field of flow control. These automatic valves usually use mechanical or electrical control methods to perform simple switches or opening adjustments according to preset parameters. On the one hand, their control strategies are relatively simple and can only be adjusted in fixed modes according to limited parameters, and cannot adapt to complex and changeable working conditions. In practical applications, the flow of fluids is often affected by many factors, such as temperature, pressure, viscosity, etc. Simple automatic valves cannot comprehensively consider these factors, resulting in poor accuracy and stability of flow control. On the other hand, this type of valve lacks a feedback mechanism and cannot monitor and adjust the flow in real time. When the system is disturbed or fails, it cannot respond effectively in time, which can easily cause production accidents. Summary of the invention

[0004] Technical issues solved In view of the above-mentioned shortcomings of the prior art, the present invention provides an intelligent multifunctional valve performance testing system device, which can effectively solve the problems in the prior art.

[0005] Technical Solution To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides an intelligent multifunctional valve performance testing system device, comprising a water tank, a liquid level gauge and a temperature sensor arranged in the water tank, the bottom of the water tank is connected with a buffer tube 1, the bottom end of the buffer tube 1 is connected with a metal pipe 2, the middle part of the metal pipe 2 is sleeved with a switch valve 1 and a torque sleeve, the outer side of the torque sleeve is fixedly connected with one end of a torque sensor, one end of the torque sensor is fixedly connected with a power output end of a torque robot, the middle part of the metal pipe 2 is provided with an automatic clamping device 1, the bottom end of the metal pipe 2 is connected with a metal pipe 3, the bottom end of the metal pipe 3 is connected with a metal pipe 4 Maintain communication, a pressure sensor 1 is arranged on the metal pipe 4, an automatic clamping device 2 is arranged at the bottom end of the metal pipe 4, the bottom end of the metal pipe 4 is connected to the metal pipe 5, the top end of the metal pipe 5 is connected to the metal hose, the bottom end of the metal hose is connected to the buffer tube 2 through the switch valve 2, and the bottom end of the buffer tube 2 is connected to the metal pipe 6, the bottom end of the metal pipe 6 is connected to the buffer tube 3, the other end of the buffer tube 3 is connected to the metal pipe 7, the end of the metal pipe 7 is connected to the water tank, and a feedback actuator structure is arranged in the torque robot and the handling robot.

[0006] Furthermore, the water tank and buffer tube 1 are connected via a metal pipe 1, and a rubber hose, a pipeline pump and a one-way valve are arranged and connected on the metal pipe 1, and the bottom end of the one-way valve is connected to the buffer tube 1, the metal pipe 1 is fixedly connected to the external structure via a bracket 1, and the automatic clamping device 1 is arranged at the bottom of the torque sleeve.

[0007] Furthermore, the metal pipe 2, metal pipe 3, metal pipe 4, metal pipe 5, metal pipe 6, metal pipe 7 and metal pipe 7 are fixedly connected to the external structure through bracket 2, bracket 3, bracket 4, bracket 5, bracket 6 and bracket 7 respectively, and the bottom end of the metal pipe 2 and the metal pipe 3 are sleeved with a flow sensor at the connection, the metal pipe 4 at the bottom end of the automatic clamping device 2 is provided with a control valve 1, the control end of the control valve 1 is fixed with a suction cup, one end of the suction cup is fixedly connected to the power output end of the handling robot, and the metal pipe 5 is sleeved with a pressure sensor 2.

[0008] Furthermore, a switch valve 2 is connected to the bottom of the metal hose, a switch valve 3 is sleeved on the middle part of the metal pipe 6, and the bottom end of the metal pipe 6 is connected to the control valve 2, the bottom end of the control valve 2 is connected to the buffer tube 3, the other end of the buffer tube 3 is provided with a pressure gauge and an automatic exhaust valve, the buffer tube 2 is connected to the buffer tube 3 through a capillary tube, and is connected to the metal pipe 8 on the capillary tube, a balance bracket and an electronic balance are provided on the metal pipe 8, one end of the metal pipe 8 is connected to a measuring cylinder, and the top end of the measuring cylinder is connected to the switch valve 4, the top end of the switch valve 4 is connected to the submersible pump in the water collector, and one end of the water collector is connected to the metal pipe 7 through a pipe.

[0009] Furthermore, the pipeline pump, one-way valve, automatic clamping device 1, flow sensor, pressure sensor 1, pressure sensor 2, switch valve 2 and control valve 2, switch valve assembly, submersible pump and one end of the water collector are electrically connected to the frequency conversion control cabinet, and data is exchanged between one end of the frequency conversion control cabinet and the computer through wireless communication equipment and wired communication equipment. A software system is set in the computer, which includes running a customized control algorithm and operating system to realize the collection, processing and analysis of flow data, and generate corresponding control instructions according to a preset control strategy.

[0010] Furthermore, an ARM controller is provided in the torque robot and the transport robot, a database module for preset flow data is provided in the computer, and an improved PID algorithm is provided in the computer.

[0011] Furthermore, the handling robot, various control valve components, torque robot, flow sensor, pressure sensor component and pressure gauge and automatic exhaust valve, computer and intelligent control software form a complete micro flow coefficient testing system, and its flow coefficient is less than 1.0.

[0012] Furthermore, the PID algorithm in the computer is: , where Kp(t), Ki(t), and Kd(t) are the proportional, integral, and differential coefficients of adaptive adjustment, and the adaptive method is as follows: When the proportional coefficient Kp: When the error is large, increase Kp to speed up the system response; when the error is small, reduce Kp to reduce overshoot; When the integral coefficient Ki: When the system has a steady-state error, increase Ki to eliminate the error; when the system is close to the target value, reduce Ki to prevent integral saturation; When the differential coefficient Kd: adjust Kd according to the rate of change of the error to improve the system's anti-interference ability.

[0013] Furthermore, the wireless communication mode at one end of the computer adopts a ZigBee wireless communication module, and the wired communication mode adopts an Ethernet wired communication mode.

[0014] Beneficial Effects Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects: The present invention provides a flow coefficient test system composed of intelligent equipment and intelligent control software, which is not only suitable for occasions where the flow coefficient is greater than or equal to 1.0 (the conventional flow coefficient range is 1.0~1000), but also suitable for occasions where the flow coefficient is less than 1.0 (the micro flow coefficient range is 0.001~1.0); the automatic clamping device is used for automatic clamping of control valves and switch valves, and can automatically adjust the clamping force according to the valve caliber size, greatly improving the installation efficiency and reliability of the valve; the torque sleeve, torque sensor and torque robot can accurately test the torque value of the switch valve when it is unloaded or loaded; the handling robot and suction cup are used for the handling and positioning installation of the control valve and the switch valve, which reduces the labor intensity of personnel and improves the installation efficiency of the valve; the computer and intelligent control software can accurately collect and accurately analyze various performance test data of the valve, realize automatic control of the test process, automatically generate a test report, and shut down the machine and alarm for abnormal situations.

[0015] And in this case, the test system can achieve precise control of the fluid flow in the pipeline with the help of high-precision flow sensors and advanced control algorithms (such as improved adaptive PID algorithms). The flow control accuracy can be greatly improved. Compared with the traditional valve control method, the error can be reduced to a very small range, and the flow control error can be reduced from ±5% of the traditional method to within ±1%, providing a stable and accurate flow guarantee for the production process, significantly improving product quality and production efficiency. The system has a fast response capability. When the set target flow changes or flow disturbances occur in the pipeline, the valve opening can be adjusted quickly. Its response time is greatly shortened, and it can generally respond within a few seconds, quickly adjusting the actual flow to near the target value, and supports remote monitoring and management through the Internet. Users can view the system's operating status, set parameters and issue control instructions through mobile phones, computers and other terminal devices anytime and anywhere, which improves the convenience and timeliness of management. Managers can operate and adjust the system without going to the site in person, saving a lot of time and labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] The numbers in the figure represent: 1, water tank; 2, liquid level gauge; 3, temperature sensor; 4, metal pipe 1; 5, bracket 1; 6, rubber hose; 7, pipeline pump; 8, one-way valve; 9, buffer tube 1; 10, torque robot; 11, torque sensor; 12, torque sleeve; 13, switch valve 1; 14, automatic clamping device 1; 15, metal pipe 2; 16, bracket 2; 17, flow sensor; 18, bracket 3; 19, metal pipe 3; 20, metal pipe 4; 21, bracket 4; 22, pressure sensor 1; 23, automatic clamping device 2; 24, handling robot; 25 , suction cup; 26, control valve one; 27, bracket five; 28, metal pipe five; 29, pressure sensor two; 30, metal hose; 31, switch valve two; 32, buffer tube two; 33, switch valve three; 34, bracket six; 35, metal pipe six; 36, control valve two; 37, buffer tube three; 38, bracket seven; 39, metal pipe seven; 40, pressure gauge; 41, automatic exhaust valve; 42, metal pipe eight; 43, balance bracket; 44, electronic balance; 45, measuring cylinder; 46, switch valve four; 47, submersible pump; 48, water collector; 49, frequency conversion control cabinet; 50, computer. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention will be further described below in conjunction with the embodiments.

[0021] Embodiment 1: An intelligent multifunctional valve performance testing system device, refer to the attached Figure 1; It includes a water tank 1, a liquid level meter 2 and a temperature sensor 3 arranged in the water tank 1, the bottom of the water tank 1 is connected to a buffer tube 9, the bottom end of the buffer tube 9 is connected to a metal pipe 15, the middle part of the metal pipe 15 is sleeved with a switch valve 13 and a torque sleeve 12, the outer side of the torque sleeve 12 is fixedly connected to one end of a torque sensor 11, one end of the torque sensor 11 is fixedly connected to the power output end of the torque robot 10, the middle part of the metal pipe 15 is provided with an automatic clamping device 14, the bottom end of the metal pipe 15 is connected to a metal pipe 3 19, the bottom end of the metal pipe 3 19 is connected to the metal pipe 4 2 0 is kept in communication, a pressure sensor 1 22 is arranged on the metal pipe 4 20, an automatic clamping device 2 23 is arranged at the bottom end of the metal pipe 4 20, the bottom end of the metal pipe 4 20 is kept in communication with the metal pipe 5 28, the top end of the metal pipe 5 28 is kept in communication with the metal hose 30, the bottom end of the metal hose 30 is kept in communication with the buffer pipe 2 32 through the switch valve 2 31, and the bottom end of the buffer pipe 2 32 is kept in communication with the metal pipe 6 35, the bottom end of the metal pipe 6 35 is kept in communication with the buffer pipe 3 37, the other end of the buffer pipe 3 37 is kept in communication with the metal pipe 7 39, and the end of the metal pipe 7 39 is kept in communication with the water tank 1; The water tank 1 and the buffer tube 9 are connected through a metal pipe 4, and a rubber hose 6, a pipeline pump 7 and a one-way valve 8 are arranged and connected to the metal pipe 4, and the bottom end of the one-way valve 8 is connected to the buffer tube 9. The metal pipe 4 is fixedly connected to the external structure through a bracket 5, and an automatic clamping device 14 is arranged at the bottom of the torque sleeve 12.

[0022] The metal pipe 2 15, the metal pipe 3 19, the metal pipe 4 20, the metal pipe 5 28, the metal pipe 6 35, the metal pipe 7 39, and the metal pipe 7 38 are fixedly connected to the external structure through the bracket 2 16, the bracket 3 18, the bracket 4 21, the bracket 5 27, the bracket 6 34, and the bracket 7 39, respectively, and the bottom end of the metal pipe 2 15 and the metal pipe 3 19 are sleeved with a flow sensor 17 at the connection, and the metal pipe 4 20 at the bottom end of the automatic clamping device 23 is provided with a control valve 1 26, and the control end of the control valve 1 26 is fixed with a suction cup 25. One end of the suction cup 25 is fixedly connected to the power output end of the handling robot 24, and a pressure sensor 29 is provided on the metal pipe 28. The water tank, pipeline pump, one-way valve, rubber hose, buffer tube, metal pipe, metal hose, bracket, automatic clamping device, switch valve, control valve, automatic exhaust valve, pressure gauge, intelligent positioner, solenoid valve, flow sensor, pressure sensor, temperature sensor, liquid level meter, frequency conversion control cabinet, computer, and intelligent control software constitute a complete flow coefficient testing system for occasions where the flow coefficient is greater than or equal to 1.0.

[0023] Embodiment 2: A switch valve 2 31 is connected to the bottom of the metal hose 30, a switch valve 33 is sleeved on the middle part of the metal pipe 6 35, and the bottom end of the metal pipe 6 35 is connected to the control valve 2 36, the bottom end of the control valve 2 36 is connected to the buffer pipe 3 37, the other end of the buffer pipe 3 37 is provided with a pressure gauge 40 and an automatic exhaust valve 41, the buffer pipe 2 32 is connected to the buffer pipe 3 37 through a capillary tube, and is connected to the metal pipe 8 42 on the capillary tube, a balance bracket 43 and an electronic balance 44 are provided on the metal pipe 8 42, one end of the metal pipe 8 42 is connected to the measuring cylinder 45, and the top end of the measuring cylinder 45 is connected to the switch valve 4 46, the top end of the switch valve 46 is connected to the submersible pump 47 in the water collector 48, and one end of the water collector 48 is connected to the metal pipe 7 39 through a pipe.

[0024] The pipeline pump 7, the one-way valve 8, the automatic clamping device 14, the flow sensor 17, the pressure sensor 22, the pressure sensor 29, the switch valve 2 31 and the control valve 2 36, the switch valve assembly, the submersible pump 47 and one end of the water collector 48 are electrically connected to the frequency conversion control cabinet 49, and one end of the frequency conversion control cabinet 49 and the computer 50 are connected to each other through wireless communication equipment and wired communication equipment. A software system is set in the computer 50, which includes running a customized control algorithm and an operating system to realize the collection, processing and analysis of flow data, and generate corresponding control instructions according to a preset control strategy; Torque sleeves, torque sensors and torque robots can accurately test the torque value of the switch valve when it is unloaded or loaded; handling robots and suction cups are used for the handling, positioning and installation of control valves and switch valves, which reduces the labor intensity of personnel and improves the installation efficiency of valves; computers and intelligent control software can accurately collect and analyze various performance test data of valves, realize automatic control of the test process, automatically generate test reports, shut down the machine for abnormal situations and issue alarms.

[0025] Embodiment 3: An ARM controller is provided in the torque robot 10 and the handling robot 24, and a database module for preset flow data is provided in the computer 50, and an improved PID algorithm is provided in the computer 50; the handling robot 24, each control valve assembly, the torque robot 10, the flow sensor 17, the pressure sensor assembly and the pressure gauge 40 and the automatic exhaust valve 41, the computer 50 and the intelligent control software constitute a complete set of micro flow coefficient test system, and its flow coefficient is less than 1.0; the PID algorithm in the computer 50 is: , where Kp(t), Ki(t), and Kd(t) are the proportional, integral, and differential coefficients of adaptive adjustment, and the adaptive method is as follows: When the proportional coefficient Kp: When the error is large, increase Kp to speed up the system response; when the error is small, reduce Kp to reduce overshoot; When the integral coefficient Ki: When the system has a steady-state error, increase Ki to eliminate the error; when the system is close to the target value, reduce Ki to prevent integral saturation; When the differential coefficient Kd: Kd is adjusted according to the rate of change of the error to improve the anti-interference ability of the system; the wireless communication mode at one end of the computer 50 adopts a ZigBee wireless communication module, and the wired communication mode adopts an Ethernet wired communication mode.

[0026] The test system can achieve precise control of the fluid flow in the pipeline with the help of high-precision flow sensors and advanced control algorithms (such as improved adaptive PID algorithms). The flow control accuracy can be greatly improved. Compared with the traditional valve control method, the error can be reduced to a very small range, and the flow control error can be reduced from ±5% of the traditional method to within ±1%, providing a stable and accurate flow guarantee for the production process, significantly improving product quality and production efficiency. The system has a fast response capability and can quickly adjust the valve opening when the set target flow changes or flow disturbances occur in the pipeline.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent multifunctional valve performance testing system device, characterized in that: The invention comprises a water tank (1), a liquid level meter (2) and a temperature sensor (3) arranged in the water tank (1), the bottom of the water tank (1) being in communication with a buffer tube (9), the bottom end of the buffer tube (9) being in communication with a metal pipe (15), the middle part of the metal pipe (15) being sleeved with a switch valve (13) and a torque sleeve (12), the outer side of the torque sleeve (12) being fixedly connected with one end of a torque sensor (11), one end of the torque sensor (11) being fixedly connected with a power output end of a torque robot (10), the middle part of the metal pipe (15) being provided with an automatic clamping device (14), the bottom end of the metal pipe (15) being in communication with a metal pipe (19), the bottom end of the metal pipe (19) being in communication with a metal pipe (20), the metal pipe (20) being in communication with a power output end of a torque robot (10), ... metal pipe (19) being in communication with a metal pipe (20), the metal pipe (20) being in communication with a power output end of a torque robot (10), the metal pipe (15) being in communication with a buffer tube (9), the bottom end of the buffer tube (9) being in communication with a metal pipe (15), the metal pipe (15) being in communication with a metal pipe (20), the metal pipe (20) being in communication with a power output end of a torque robot (10), the metal pipe (15) being in communication with a buffer tube (9), the metal pipe (15) being in communication with a buffer tube (9), the metal pipe (15) being in communication with a buffer tube (9), the metal pipe (15) being in communication with a buffer tube ( ) is provided with a pressure sensor 1 (22), the bottom end of the metal pipe 4 (20) is provided with an automatic clamping device 2 (23), the bottom end of the metal pipe 4 (20) is connected to the metal pipe 5 (28), the top end of the metal pipe 5 (28) is connected to the metal hose (30), the bottom end of the metal hose (30) is connected to the buffer pipe 2 (32) through the switch valve 2 (31), and the bottom end of the buffer pipe 2 (32) is connected to the metal pipe 6 (35), the bottom end of the metal pipe 6 (35) is connected to the buffer pipe 3 (37), the other end of the buffer pipe 3 (37) is connected to the metal pipe 7 (39), and the end of the metal pipe 7 (39) is connected to the water tank (1), and a feedback actuator structure is provided in the torque robot (10) and the handling robot (24).

2. An intelligent multifunctional valve performance testing system device according to claim 1, characterized in that: The water tank (1) and the buffer tube (9) are connected via a metal pipe (4), and a rubber hose (6), a pipeline pump (7) and a one-way valve (8) are arranged on and connected to the metal pipe (4), and the bottom end of the one-way valve (8) is connected to the buffer tube (9). The metal pipe (4) is fixedly connected to the external structure via a bracket (5), and the automatic clamping device (14) is arranged at the bottom of the torque sleeve (12).

3. The intelligent multifunctional valve performance testing system device according to claim 2 is characterized in that: The metal pipe 2 (15), the metal pipe 3 (19), the metal pipe 4 (20), the metal pipe 5 (28), the metal pipe 6 (35), the metal pipe 7 (39), and the metal pipe 7 (38) are fixedly connected to the external structure through the bracket 2 (16), the bracket 3 (18), the bracket 4 (21), the bracket 5 (27), the bracket 6 (34), and the bracket 7 (39), respectively, and a flow sensor (17) is sleeved at the connection between the bottom end of the metal pipe 2 (15) and the metal pipe 3 (19), and a control valve 1 (26) is arranged on the metal pipe 4 (20) at the bottom end of the automatic clamping device 2 (23), and a suction cup (25) is fixedly provided on the control end of the control valve 1 (26), and one end of the suction cup (25) is fixedly connected to the power output end of the handling robot (24), and a pressure sensor 2 (29) is sleeved on the metal pipe 5 (28).

4. The intelligent multifunctional valve performance testing system device according to claim 1 is characterized in that: The bottom of the metal hose (30) is connected to a switch valve 2 (31), the middle of the metal pipe 6 (35) is sleeved with a switch valve 3 (33), and the bottom end of the metal pipe 6 (35) is connected to the control valve 2 (36), the bottom end of the control valve 2 (36) is connected to the buffer pipe 3 (37), the other end of the buffer pipe 3 (37) is provided with a pressure gauge (40) and an automatic exhaust valve (41), and the buffer pipe 2 (32) is connected to the buffer pipe 3 (37) through a thin tube. , and is connected to the metal pipe eight (42) on the capillary tube, a balance bracket (43) and an electronic balance (44) are provided on the metal pipe eight (42), one end of the metal pipe eight (42) is connected to the measuring cylinder (45), and the top end of the measuring cylinder (45) is connected to the switch valve four (46), the top end of the switch valve four (46) is connected to the submersible pump (47) in the water collector (48), and one end of the water collector (48) is connected to the metal pipe seven (39) through a pipe.

5. The intelligent multifunctional valve performance testing system device according to claim 2 is characterized in that: The pipeline pump (7), the one-way valve (8), the automatic clamping device (14), the flow sensor (17), the pressure sensor (22), the pressure sensor (29), the switch valve (31), the control valve (36), the switch valve assembly, the submersible pump (47) and one end of the water collector (48) are electrically connected to the frequency conversion control cabinet (49), and data is exchanged between one end of the frequency conversion control cabinet (49) and the computer (50) via wireless communication equipment and wired communication equipment. A software system is provided in the computer (50), which includes running a customized control algorithm and an operating system to collect, process and analyze flow data, and generate corresponding control instructions according to a preset control strategy.

6. The intelligent multifunctional valve performance testing system device according to claim 5, characterized in that: An ARM controller is provided in the torque robot (10) and the transport robot (24), a database module for preset flow data is provided in the computer (50), and an improved PID algorithm is provided in the computer (50).

7. The intelligent multifunctional valve performance testing system device according to claim 6, characterized in that: The handling robot (24), the control valve components, the torque robot (10), the flow sensor (17), the pressure sensor component and the pressure gauge (40), the automatic exhaust valve (41), the computer (50) and the intelligent control software form a complete micro-flow coefficient testing system, and the flow coefficient is less than 1.

0.

8. The intelligent multifunctional valve performance testing system device according to claim 7, characterized in that: The control structure of the computer (50) adopts a PID algorithm, and in the PID algorithm, the control quantity is obtained through calculation of three links: proportional (P), integral (I) and differential (D), and the proportional link quickly adjusts the control output according to the deviation size.

9. The intelligent multifunctional valve performance testing system device according to claim 8, characterized in that: The wireless communication mode of one end of the computer (50) adopts a ZigBee wireless communication module, and the wired communication mode adopts an Ethernet wired communication mode.

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