Electric actuator detection device based on hydraulic braking principle and test method thereof

Abstract

The invention discloses an electric actuator detection device based on a hydraulic braking principle and a test method thereof. The electric actuator detection device based on the hydraulic braking principle comprises a test bench, a hydraulic braking mechanism, a data acquisition mechanism and a control system. According to the electric actuator detection device based on the hydraulic braking principle, a relation model of dynamic and static action torques of an electric actuator is established through a control system, a complete quantity value tracing chain of multiple parameters of the electric actuator under actual working conditions is established, a recheck detection method outline of a nuclear-grade electric actuator is established, the off-line detection technology of the electric actuator is mastered, and the detection efficiency of the electric actuator is improved. And basic data is provided for online diagnosis of the valve. And full-parameter detection of the electric actuator can be realized through the data acquisition mechanism. Meanwhile, detection of various parameters of the electric actuator under actual working conditions can be simulated. Meanwhile, by means of a hydraulic braking mode, automatic continuous linear adjustment of the load and the load protection function can be achieved, and the load response sensitivity and the valve load simulation performance are improved.

Description

Technical Field

[0001] The invention relates to the field of electric actuator detection, and in particular to an electric actuator detection device based on the hydraulic braking principle and a testing method thereof. Background Art

[0002] An electric actuator is an instrument used in various industrial automation process control links. It is a device that can control the opening and closing of valves. The action torque value of the electric valve to open and close the valve determines the degree of opening and closing of the valve, which is an important technical indicator. The output torque of the electric actuator needs to be regularly tested and calibrated. However, in addition to testing the performance of the electric actuator itself, the testing of various parameters of the electric actuator under actual working conditions (idling, stalled, opening / closing, different load rates) should be simulated. At present, there is a lack of a testing device that can meet the various testing requirements of electric actuators. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an electric actuator detection device based on the hydraulic braking principle and a test method thereof.

[0004] The technical solution adopted by the present invention to solve the technical problem is: constructing an electric actuator detection device based on the hydraulic braking principle, which includes a test bench, a hydraulic braking mechanism, a data acquisition mechanism and a control system;

[0005] The test bench is used to install the electric actuator;

[0006] The hydraulic brake mechanism is used to control the output torque of the electric actuator;

[0007] The data acquisition mechanism is used to collect the operating data parameters of the electric actuator;

[0008] The control system is in communication connection with the hydraulic brake mechanism and the data acquisition mechanism, and is used to control the action of the hydraulic brake mechanism and process and analyze the operating data parameters.

[0009] In some embodiments, the hydraulic brake mechanism includes a hydraulic brake connected to the electric actuator and a hydraulic control source connected to the hydraulic brake.

[0010] In some embodiments, the data acquisition mechanism includes a torque and speed sensor, a pressure sensor, and a measuring instrument;

[0011] The torque and speed sensor is coupled to the output shaft of the electric actuator and is used to measure the output torque and speed of the electric actuator;

[0012] The pressure sensor is used to measure the brake hydraulic pressure value of the hydraulic brake mechanism;

[0013] The measuring instrument is used to measure the electrical parameter information of the electric actuator.

[0014] In some embodiments, the control system includes a parameter setting module, a data processing module, a switch control module, and a display;

[0015] The parameter setting module is used to input rated parameters of the electric actuator and set startup parameter information of the electric actuator;

[0016] The data processing module is in communication with the data acquisition mechanism and is used to process the operating data parameters collected by the data acquisition mechanism;

[0017] The switch control module is used to control the switch action of the electric actuator;

[0018] The display is communicatively connected with the parameter setting module, the data processing module, and the switch control module.

[0019] In this embodiment, a test method for an electric actuator based on the hydraulic braking principle is also constructed, which is based on the electric actuator detection device based on the hydraulic braking principle, and includes the steps of:

[0020] S1: Install the electric actuator on the test bench;

[0021] S2: Open the parameter setting module, input the rated parameters of the electric actuator, and set the start-up parameter information of the electric actuator according to the test requirements;

[0022] S3: Using a switch control module to control the action of the electric actuator;

[0023] S4: using the data acquisition mechanism to collect operating data parameters of the electric actuator;

[0024] S5: Processing and analyzing the operating data parameters using a data processing module, and obtaining a test curve related to the operating data parameters.

[0025] In some embodiments, in step S2, the test requirements include: starting characteristic test, stall characteristic test, load characteristic test, torque switch action value calibration test, torque power curve test, torque-current-power characteristic curve test.

[0026] In some embodiments, the rated parameters of the electric actuator include: the model of the electric actuator, the rated torque of the electric actuator, and the rated operating power of the electric actuator.

[0027] In some embodiments, the startup parameter information includes: the action torque of the electric actuator, the stall torque of the electric actuator, the running direction of the electric actuator, the load rate of the electric actuator, and the switch closing time of the electric actuator.

[0028] In some embodiments, step S4 includes:

[0029] S41: Obtaining the output torque and speed of the electric actuator using a torque and speed sensor;

[0030] S42: Acquiring a brake hydraulic pressure value of the hydraulic brake mechanism by using a pressure sensor;

[0031] S43: Obtaining electrical parameter information of the electric actuator using a measuring instrument.

[0032] In some embodiments, the electrical parameter information includes: an input voltage of the electric actuator, a current of the electric actuator, and an actual working power of the electric actuator.

[0033] The implementation of the present invention has the following beneficial effects: the electric actuator detection device based on the hydraulic braking principle establishes a relationship model of the dynamic and static action torque of the electric actuator through the control system, establishes a complete value traceability chain of multiple parameters of the electric actuator under actual working conditions, establishes an outline of the re-inspection detection method of the nuclear-grade electric actuator, masters the offline detection technology of the electric actuator, and provides basic data for online valve diagnosis. And the full parameter detection of the electric actuator can be realized through the data acquisition mechanism. At the same time, it can simulate the detection of various parameters of the electric actuator under actual working conditions, and improve the construction of the full traceability chain of various parameters under different working conditions (idling, blocking, opening / closing) and different load rates during the entire life cycle of the electric actuator (new purchase, operation, use, maintenance, scrapping stage). At the same time, through the hydraulic braking method, the load can be automatically and continuously adjusted linearly, the load protection function can be realized, the load response sensitivity and the valve load simulation can be improved, and the stability and repeatability of the torque value of the electric actuator under different load change conditions at the same speed can be realized, and the speed control and load control in different application scenarios and states can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In the drawings:

[0035] Figure 1is a general structural diagram of an electric actuator detection device based on the hydraulic braking principle in some embodiments of the present invention;

[0036] Figure 2 is a schematic diagram of the internal structure of a test bench in some embodiments of the present invention;

[0037] Figure 3 It is a flowchart of a testing method of an electric actuator based on the hydraulic braking principle in some embodiments of the present invention. DETAILED DESCRIPTION

[0038] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0039] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] See also Figure 1 and Figure 2, is an electric actuator detection device based on the hydraulic brake principle in some embodiments of the present invention, which includes a test bench 1, a hydraulic brake mechanism 2, a data acquisition mechanism and a control system 3. The test bench 1 is used to install the electric actuator 4; the hydraulic brake mechanism 2 is used to control the output torque of the electric actuator 4; the data acquisition mechanism is used to collect the operating data parameters of the electric actuator 4; the control system 3 is connected to the hydraulic brake mechanism 2 and the data acquisition mechanism, and is used to control the action of the hydraulic brake mechanism 2 and process and analyze the operating data parameters.

[0041] Specifically, the test bench 1 is used for the installation of the electric actuator 4. The test bench 1 covers the flange sizes of various electric actuators 4, such as F07, F10, F14, F16, F25, F30, and F35, to meet the installation requirements of various electric actuators 4. The hydraulic brake mechanism 2 provides a load for the electric actuator 4 to control the output torque of the electric actuator 4. The data acquisition mechanism can have the functions of collecting brake hydraulic pressure, current, torque, speed, and power signals. The control system 3 can summarize and analyze the operating data parameters collected by the data acquisition mechanism and present them in the form of a combination of sampling curves and collected values.

[0042] Among them, the hydraulic brake mechanism 2 includes a hydraulic brake 21 connected to the electric actuator 4 and a hydraulic control source 22 connected to the hydraulic brake 21. The electric actuator detection device based on the hydraulic brake principle adopts hydraulic braking, which is different from the traditional electromagnetic braking, pneumatic braking, and magnetic fluid braking. It can realize automatic continuous linear adjustment of the load, load protection function, improve load response sensitivity and valve load simulation, and realize the stability and repeatability of the torque value of the electric actuator 4 under different load change states at the same speed, so as to realize speed control and load control in different application scenarios and states. The hydraulic control source 22 can be a hydraulic pump station.

[0043] Furthermore, the electric actuator detection device based on the hydraulic braking principle also includes a voltage regulator 7 to adjust the power supply voltage of the electric actuator 4 .

[0044] Furthermore, the data acquisition mechanism includes a torque and speed sensor 5, a pressure sensor and a measuring instrument. The torque and speed sensor 5 is coupled to the output shaft of the electric actuator 4, and is used to measure the output torque and speed of the electric actuator 4. The torque and speed sensor 5 is connected in series with the hydraulic brake 21 inside the test bench 1, and can directly measure the output torque and speed of the electric actuator 4 without passing through an intermediate link and without zeroing. The torque sensor has an accuracy level of 0.2. In addition, the pressure sensor is used to measure the brake hydraulic pressure value of the hydraulic brake mechanism 2, and the pressure sensor has a level of 0.2. The measuring instrument is used to measure the electrical parameter information of the electric actuator 4. The measuring instrument can be a digital measuring instrument, which can measure the input voltage, current, and actual working power of the electric actuator 4, and the collected electrical parameter information can be input into the control system 3 through the communication port.

[0045] The control system 3 includes a parameter setting module, a data processing module, a switch control module and a display. The parameter setting module is used to input the rated parameters of the electric actuator 4 and set the startup parameter information of the electric actuator 4. The data processing module is connected to the data acquisition mechanism for communication and is used to process the operating data parameters collected by the data acquisition mechanism. The information processed by the data processing module is presented in the form of a combination of sampling curves and collected values.

[0046] In addition, the switch control module is used to control the switch action of the electric actuator 4. The switch control module can provide the electric actuator 4 with a remote operation signal control function to control the start, shut down, and stop of the electric actuator 4. The display is connected to the parameter setting module, the data processing module, and the switch control module in communication. The display is used to display information of the parameter setting module, the data processing module, and the switch control module, as well as display test curves of operating data parameters.

[0047] like Figure 3 As shown, in this embodiment, a test method for an electric actuator based on the hydraulic braking principle is also constructed, which is based on the above-mentioned electric actuator detection device based on the hydraulic braking principle, and includes the steps of:

[0048] S1: Install the electric actuator 4 on the test bench 1;

[0049] S2: Open the parameter setting module, input the rated parameters of the electric actuator 4, and set the start-up parameter information of the electric actuator 4 according to the test requirements;

[0050] S3: Using a switch control module to control the action of the electric actuator 4;

[0051] S4: using the data acquisition mechanism to collect operating data parameters of the electric actuator 4;

[0052] S5: Processing and analyzing the operating data parameters using the data processing module, and obtaining a test curve related to the operating data parameters.

[0053] Among them, in step S2, the test requirements include: starting characteristic test, stall characteristic test, load characteristic test, torque switch action value calibration test, torque power curve test, torque-current-power characteristic curve test.

[0054] For example, in the starting characteristic test, it is necessary to use the torque and speed sensor 5 to measure the torque and speed of the electric actuator 4, and use the parameter setting module to set the starting parameter information of the electric actuator 4 to simulate the actual operating conditions of the electric actuator 4. During the test, the data acquisition mechanism collects the operating data parameters of the electric actuator 4, and finally the data processing module processes and analyzes the operating data parameters to complete the starting characteristic test of the electric actuator 4.

[0055] For example, in the stall characteristic test, the input voltage of the electric actuator 4 can be adjusted through the parameter setting module, and the start and shut down of the electric actuator 4 can be controlled through the switch control module. During the test, the electric actuator 4 can be started, and after the electric actuator 4 runs to a certain speed, the electric actuator 4 is suddenly stopped to observe the response of the electric actuator 4. The operating data parameters of the electric actuator 4 are collected through the data acquisition mechanism, and data analysis is performed to evaluate the response capability and safety performance of the electric actuator 4 in the stall state. Other test requirements can adjust the relevant parameters according to actual needs, which will not be repeated here.

[0056] In addition, the rated parameters of the electric actuator 4 include: the model of the electric actuator 4, the rated torque of the electric actuator 4, and the rated operating power of the electric actuator 4. The startup parameter information includes: the action torque of the electric actuator 4, the stall torque of the electric actuator 4, the running direction of the electric actuator 4, the load rate of the electric actuator 4, and the switch closing time of the electric actuator 4.

[0057] Further, step S4 includes: S41: using the torque and speed sensor 5 to obtain the output torque and speed of the electric actuator 4; S42: using the pressure sensor to obtain the brake hydraulic pressure value of the hydraulic brake mechanism 2; S43: using the measuring instrument to obtain the electrical parameter information of the electric actuator 4.

[0058] The electrical parameter information includes: the input voltage of the electric actuator 4 , the current of the electric actuator 4 , and the actual working power of the electric actuator 4 .

[0059] It can be understood that the electric actuator detection device based on the hydraulic braking principle can perform starting characteristic test, stall characteristic test, load characteristic test, torque switch action value calibration test, torque power curve test, torque-current-power characteristic curve test. It can also simulate the process parameters and working curve of the electric actuator 4 from opening to closing, and the switch action time can be adjusted and set, providing multiple detection methods. It can also store the test data and measurement curve of the electric actuator 4. And through the data acquisition mechanism, it can measure the starting torque, stall torque, operating torque and all parameters of the valve simulation work.

[0060] The electric actuator detection device based on the hydraulic braking principle establishes a relationship model of the dynamic and static action torque of the electric actuator 4 through the control system 3, establishes a complete value traceability chain of multiple parameters of the electric actuator 4 under actual working conditions, establishes an outline of the re-inspection detection method of the nuclear-grade electric actuator 4, masters the offline detection technology of the electric actuator 4, and provides basic data for the online diagnosis of the valve. And the full parameter detection of the electric actuator 4 can be realized through the data acquisition mechanism. At the same time, it can simulate the detection of various parameters of the electric actuator 4 under actual working conditions, and improve the construction of the full traceability chain of various parameters under different working conditions (idling, blocking, opening / closing) and different load rates of the electric actuator 4 throughout the life cycle (new purchase, operation, use, maintenance, scrapping stage). At the same time, through the hydraulic braking method, the load can be automatically and continuously adjusted linearly, the load protection function can be realized, the load response sensitivity and the valve load simulation can be improved, and the stability and repeatability of the torque value of the electric actuator 4 under different load change conditions at the same speed can be realized, and the speed control and load control in different application scenarios and states can be realized.

[0061] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the scope covered by the claims of the present invention.

Claims

1. An electric actuator detection device based on the hydraulic braking principle, characterized in that: It comprises a test bench (1), a hydraulic brake mechanism (2), a data acquisition mechanism and a control system (3); The test bench (1) is used to install the electric actuator (4); The hydraulic brake mechanism (2) is used to control the output torque of the electric actuator (4); The data acquisition mechanism is used to collect operating data parameters of the electric actuator (4); The control system (3) is communicatively connected with the hydraulic brake mechanism (2) and the data acquisition mechanism, and is used to control the action of the hydraulic brake mechanism (2) and process and analyze the operating data parameters.

2. The electric actuator detection device based on the hydraulic brake principle according to claim 1 is characterized in that: The hydraulic brake mechanism (2) comprises a hydraulic brake (21) connected to the electric actuator (4) and a hydraulic control source (22) connected to the hydraulic brake (21).

3. The electric actuator detection device based on the hydraulic brake principle according to claim 1 is characterized in that: The data acquisition mechanism comprises a torque and speed sensor (5), a pressure sensor and a measuring instrument; The torque and speed sensor (5) is coupled to the output shaft of the electric actuator (4) and is used to measure the output torque and speed of the electric actuator (4); The pressure sensor is used to measure the brake hydraulic pressure value of the hydraulic brake mechanism (2); The measuring instrument is used to measure the electrical parameter information of the electric actuator (4).

4. The electric actuator detection device based on the hydraulic brake principle according to claim 1 is characterized in that: The control system (3) comprises a parameter setting module, a data processing module, a switch control module and a display; The parameter setting module is used to input rated parameters of the electric actuator (4) and set startup parameter information of the electric actuator (4); The data processing module is in communication with the data acquisition mechanism and is used to process the operating data parameters collected by the data acquisition mechanism; The switch control module is used to control the switch action of the electric actuator (4); The display is communicatively connected with the parameter setting module, the data processing module, and the switch control module.

5. A method for testing an electric actuator based on the hydraulic braking principle, which is based on the electric actuator detection device based on the hydraulic braking principle according to any one of claims 1 to 4, characterized in that: Includes steps: S1: Install the electric actuator (4) on the test bench (1); S2: opening a parameter setting module, inputting rated parameters of the electric actuator (4), and setting start-up parameter information of the electric actuator (4) according to test requirements; S3: using a switch control module to control the action of the electric actuator (4); S4: using the data acquisition mechanism to collect operating data parameters of the electric actuator (4); S5: Processing and analyzing the operating data parameters using a data processing module, and obtaining a test curve related to the operating data parameters.

6. The testing method of the electric actuator based on the hydraulic brake principle according to claim 5 is characterized in that: In step S2, the test requirements include: starting characteristic test, stall characteristic test, load characteristic test, torque switch action value calibration test, torque power curve test, torque-current-power characteristic curve test.

7. The testing method of the electric actuator based on the hydraulic brake principle according to claim 5, characterized in that: The rated parameters of the electric actuator (4) include: the model of the electric actuator (4), the rated torque of the electric actuator (4), and the rated operating power of the electric actuator (4).

8. The testing method of the electric actuator based on the hydraulic brake principle according to claim 5, characterized in that: The startup parameter information includes: the action torque of the electric actuator (4), the stall torque of the electric actuator (4), the running direction of the electric actuator (4), the load rate of the electric actuator (4), and the switch closing time of the electric actuator (4).

9. The testing method of the electric actuator based on the hydraulic brake principle according to claim 5, characterized in that: The step S4 comprises: S41: using a torque and speed sensor (5) to obtain the output torque and speed of the electric actuator (4); S42: using a pressure sensor to obtain a brake hydraulic pressure value of the hydraulic brake mechanism (2); S43: Using a measuring instrument to obtain electrical parameter information of the electric actuator (4).

10. The testing method of the electric actuator based on the hydraulic brake principle according to claim 9, characterized in that: The electrical parameter information includes: the input voltage of the electric actuator (4), the current of the electric actuator (4), and the actual working power of the electric actuator (4).

Images