Potentiometer valve position feedback tester

Abstract

The utility model discloses a potentiometer valve position feedback tester which comprises a base. The driving motor is mounted on the base and comprises two output shafts, and one of the two output shafts is provided with a mounting part used for detachably mounting the rotating shaft; the angle sensor is arranged on the base, connected with the other one of the two output shafts and used for recording the rotating angle of the rotating shaft; the potentiometer valve position feedback tester not only can test a potentiometer (a potentiometer installed in an electrically operated valve) before being disassembled, but also can test a potentiometer (an independent potentiometer) after being disassembled, and when the potentiometers in two states are tested, the potentiometers can truly simulate the actual working states of the potentiometers, so that the testing efficiency of the potentiometer valve position feedback tester is improved. The flexibility of the potentiometer valve position tester is improved, meanwhile, the requirements for testing of potentiometers in various different environments are met, and the testing accuracy and efficiency are effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of electrical testing, in particular to a potentiometer valve position feedback tester. Background Art

[0002] There are two common types of electrical components used for position feedback in electric valves: potentiometers and transmitters. Potentiometers are driven by the gear or rack of the motor inside the electric valve to provide feedback on the valve's true position. Potentiometers typically have three pins. The resistance of the two side pins is generally fixed, while the resistance of the middle pin can be adjusted to other electrical parameters. Due to the frequent movement of these components, wear and aging may occur. During valve position changes, abnormalities such as sudden jumps or null values ​​may occur, leading to abnormal valve feedback and control.

[0003] In the patent publication number CN117929903A, titled "A Method for Testing the Performance of an Electric Valve Position Feedback Device," it is disclosed that "the auxiliary system includes a speed control unit, a drive component, an adjustment component, and a resistance signal interface. The speed control unit is used to regulate the rotation speed of the drive component directly connected to the potentiometer. This allows testers to simulate different working scenarios and verify the performance of the potentiometer at various speeds."

[0004] The drive assembly is responsible for actually connecting to and driving the potentiometer's rotation. It operates according to the speed control unit's instructions, controlling the potentiometer's movement at a preset speed. The adjustment assembly provides the speed control unit with an operational interface and instructions, ensuring that test conditions meet expected requirements. The resistance signal interface directly connects to the potentiometer to collect the resistance signal it generates. This interface is crucial for evaluating the potentiometer's performance, as it provides resistance data corresponding to each angle of rotation. However, the detection device disclosed in this patent lacks a mechanism to secure the potentiometer during testing, making it inconvenient to use. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a potentiometer valve position feedback tester which is convenient for fixing the potentiometer during the detection process and improves the test flexibility.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a potentiometer valve position feedback tester, the potentiometer includes a main body and a rotating shaft rotatably installed in the main body and a pin installed on the main body, including:

[0007] base;

[0008] a drive motor, the drive motor being mounted on the base and comprising two output shafts, one of the two output shafts being provided with a mounting portion for detachably mounting the rotating shaft;

[0009] an angle sensor, the angle sensor being disposed on the base and connected to the other of the two output shafts, and being used to record the rotation angle of the rotating shaft; and

[0010] A clamp is installed on the base to operably hold the main body near the mounting portion and allow the rotating shaft to cooperate with the mounting portion.

[0011] Furthermore, in the potentiometer valve position feedback tester, preferably, a freely adjustable support rod is installed on the base, the clamp is installed on one side of the support rod, and a locking member for adjusting the tightness is installed on the clamp.

[0012] Furthermore, in the potentiometer valve position feedback tester, preferably, the base is further provided with a first coupling element, a second coupling element, an angle sensor, and a sensor bracket;

[0013] The first coupling element is mounted on one of the two output shafts, the second coupling element is mounted on the other of the two output shafts, the mounting portion is provided on the first coupling element, the angle sensor is mounted on the second coupling element, the sensor bracket is mounted on the base, the angle sensor is mounted on the sensor bracket, and the angle sensor is connected to the second coupling element.

[0014] Furthermore, in the potentiometer valve position feedback tester, a speed control mechanism is preferably installed on the base, the speed control mechanism is electrically connected to the drive motor, and the speed control mechanism is electrically connected to a main control system.

[0015] Furthermore, in the potentiometer valve position feedback tester, the main control system preferably includes an electric valve connection port, an acquisition module and a power control module;

[0016] The electric valve connection port is used for electrically connecting pins. The electric valve connection port, the acquisition module, and the power control module are electrically connected in sequence. The power control module is electrically connected to the speed control mechanism.

[0017] Furthermore, in the potentiometer valve position feedback tester, the acquisition module preferably includes but is not limited to a programmable controller, an A / D module, a single-chip circuit board card, etc.

[0018] Furthermore, in the potentiometer valve position feedback tester, the power control module preferably includes a phase sequence switch, and also includes but is not limited to contactors, relays, thyristor components, etc.

[0019] Furthermore, in the potentiometer valve position feedback tester, the main control system preferably also includes an AC / DC module, and the AC / DC module is electrically connected to the power control module through the acquisition module.

[0020] Furthermore, in the potentiometer valve position feedback tester, preferably, a box is provided on the base, and a signal input and output terminal is provided on the box, and the signal input and output terminal includes a power button, an adjustment knob, a resistance signal output interface and a control signal input interface;

[0021] The power button, the adjusting knob, the resistance signal output interface and the control signal input interface are all installed on the box body, and the adjusting knob is electrically connected to the speed control mechanism.

[0022] The implementation of the utility model has the following beneficial effects: the utility model clamps the main body by a clamp, and the clamping force of the clamp on the main body can be adjusted by a locking knob. At the same time, a support rod is used for support, and the main body is kept in the test position by adjusting the support rod. It is easy to use and highly flexible.

[0023] The potentiometer valve position feedback tester can meet the requirements of testing potentiometers before disassembly (potentiometers installed in electric valves) and after disassembly (independent potentiometers). When testing the potentiometers in both states, the potentiometers can truly simulate their actual working states, which improves the flexibility of the potentiometer valve position tester and meets the requirements of potentiometer testing in various environments, effectively improving the accuracy and efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0025] Figure 1 This is a first-perspective structural diagram of the utility model potentiometer valve position feedback tester;

[0026] Figure 2 It is a structural diagram of the rotating mechanism of the utility model;

[0027] Figure 3 It is a structural diagram of the main control system of the utility model.

[0028] Explanation of the numbers in the schematic diagram:

[0029] 1. Base; 22. Box;

[0030] 211, drive motor; 212, angle sensor; 213, first coupling element; 100, mounting portion; 214, second coupling element; 215, sensor bracket;

[0031] 251. Support rod; 252. Clamp; 253. Locking piece;

[0032] 10. Main control system; 11. Electric valve connection port; 12. Acquisition module; 13. Power control module; 12. AC / DC module;

[0033] 23. Speed ​​control mechanism;

[0034] 24. Signal input and output terminal; 241. Power button; 242. Adjustment knob; 243. Resistance signal output interface; 244. Control signal input interface. DETAILED DESCRIPTION

[0035] 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 and are constructed and operated in specific directions. They are only for the convenience of describing the present technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0036] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions 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 intervening elements. The terms "first", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", and "third" can explicitly or implicitly include one or more of these features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0038] The technical solution adopted by the utility model to solve the technical problem is: Figures 1 to 3 The utility model discloses a potentiometer valve position feedback tester, wherein the potentiometer comprises a main body, a rotating shaft rotatably mounted in the main body, and a pin mounted on the main body, including:

[0039] Base 1;

[0040] A driving motor 211 is mounted on the base 1 and includes two output shafts. One of the two output shafts is provided with a mounting portion 100 for detachably mounting a rotating shaft.

[0041] An angle sensor 212 is provided on the base 1 and connected to the other of the two output shafts, and is used to record the rotation angle of the rotating shaft; and

[0042] The clamp 252 is installed on the base 1 to operably hold the main body near the mounting portion 100 and allow the rotating shaft to cooperate with the mounting portion 100 .

[0043] Preferably, the potentiometer comprises a main body, a slide, pins, and a rotating shaft. The clamp 252 is clamped in the potentiometer housing, and the potentiometer is inserted into the mounting portion 100. The drive motor 211 drives the rotating shaft to rotate, and the angle sensor 212 records the rotation angle of the output shaft of the drive motor 211, thereby recording and detecting the rotation angle of the rotating shaft.

[0044] A freely adjustable support rod 251 is also installed on the base 1 , a clamp 252 is installed on one side of the support rod 251 , and a locking member 253 for adjusting the tightness is installed on the clamp 252 .

[0045] Preferably, the clamp 252 clamps the main body, and the clamping force of the clamp on the main body can be adjusted by the locking member 253. At the same time, the support rod 251 is used for support. By adjusting the support rod 251, the main body is aligned with the test position and kept near the mounting portion 100.

[0046] Alternatively, the support rod 251 can be moved and bent at will, the bottom plate of the box body 22 extends outward, and the support rod 251 is installed on the outward extension section of the bottom plate. The inner surface of the clamp 252 can be provided with a cushion made of a flexible material to avoid scratching the main body surface during clamping.

[0047] The base 1 is also provided with a first coupling element 213, a second coupling element 214, an angle sensor 212, and a sensor bracket 215;

[0048] The first coupling element 213 is mounted on one of the two output shafts, the second coupling element 214 is mounted on the other of the two output shafts, the mounting portion 100 is provided on the first coupling element 213, the angle sensor 212 is mounted on the second coupling element 214, the sensor bracket 215 is mounted on the base 1, the angle sensor 212 is mounted on the sensor bracket 215, and the angle sensor 212 is connected to the second coupling element 214.

[0049] Preferably, the axis of the first output shaft and the axis of the second output shaft are on the same straight line, and the axis of the first coupling element 213 and the center line of the mounting portion 100 coincide with the axis of the first output shaft; the angle sensor 212 and the second coupling element 214 coincide with the axis of the second output shaft.

[0050] Specifically, the output shaft of the angle sensor 212 is connected to the output end of the drive motor 211 , and the two output shafts of the angle sensor 212 and the drive motor 211 are coaxial.

[0051] A speed control mechanism 23 is installed on the base 1 . The speed control mechanism 23 is electrically connected to the driving motor 211 . The speed control mechanism 23 is electrically connected to the main control system 10 .

[0052] The main control system 10 includes an electric valve connection port 11, an acquisition module 12 and a power control module 13; the electric valve connection port 11 is used for electrical connection pins, and the electric valve connection port 11, the acquisition module 12 and the power control module 13 are electrically connected in sequence, and the power control module 13 is electrically connected to the speed control mechanism 23.

[0053] Preferably, when the electric valve connection port 11 is connected to the electric valve containing the potentiometer to be measured, both the acquisition module 12 and the power control module 13 are electrically connected to the electric valve. The power control module 13 inputs power to the electric valve and controls its movement. The acquisition module 12 is electrically connected to the potentiometer via the electric valve connection port 11 to capture and record the resistance change and angular position information of the main body during rotation.

[0054] It is also possible that the electric valve connection port 11 is electrically connected to a potentiometer or a potentiometer slide.

[0055] The acquisition module 12 includes but is not limited to a programmable controller, an A / D module, a single chip microcomputer circuit board card, etc.

[0056] The power control module 13 includes a phase sequence switch, and also includes but is not limited to contactors, relays, thyristor components, and the like.

[0057] Preferably, the acquisition module 12 issues 24VDC control instructions at a unified time series time interval, and can also collect 0-24mA, 0-10VDC, and 0-1000Ω DC resistance measurement values. The acquisition module 12 is used to capture and record the resistance changes and angular position information of the main body during the rotation process.

[0058] The main control system 10 further includes an AC / DC module 14 , which is electrically connected to the power control module 13 via the acquisition module 12 .

[0059] Preferably, the AC / DC module 14 is connected to an external power source. The AC / DC module 14 enables any external power source (AC or DC), including a power adapter or any AC-to-DC power source, to be converted to the current / voltage required by the main control system 10, thereby enabling the test system to adapt to a wider range of power conditions and improving the system's applicability and flexibility.

[0060] A box body 22 is provided on the base 1, and a signal input and output terminal 24 is provided on the box body 22. The signal input and output terminal 24 includes a power button 241, an adjustment knob 242, a resistance signal output interface 243 and a control signal input interface 244; the power button 241, the adjustment knob 242, the resistance signal output interface 243 and the control signal input interface 244 are all installed on the box body 22, and the adjustment knob 242 is electrically connected to the speed control mechanism 23.

[0061] Preferably, the adjustment knob 242 adjusts the signal input to the speed control mechanism 23, and then the speed control mechanism 23 controls the direction and speed of the driving motor 211. The speed control mechanism 23 is a speed control board.

[0062] For additional explanation, the speed control mechanism 23 is electrically connected to the main control system 10 so that the speed control mechanism 23 receives control signals from the main control system 10, such as signals indicating the power direction and speed of the drive motor 211. Optionally, the main control system 10 and the speed control mechanism 23 are connected via a radio or wired connection. In the embodiment of the present utility model, the main control system 10 and the speed control mechanism 23 are connected via a radio.

[0063] It should be further explained that the control signal received by the speed control mechanism 23 from the main control system 10 includes but is not limited to DC voltage, DC current, dry contact instructions, etc. The signal receiving method includes but is not limited to wireless communication, wired communication, wired physical connection, etc.

[0064] The beneficial effects obtained by the drive motor 211, the mounting part 100, the angle sensor 212, the clamp 252, the locking piece 253, and the support rod 251 are as follows: the utility model clamps the main body by the clamp 252, and the clamping force of the clamp on the main body can be adjusted by the locking piece 253. At the same time, the support rod 251 is used for support, and the main body is kept in the quasi-test position by adjusting the support rod 251. It is easy to use and highly flexible.

[0065] The potentiometer valve position feedback tester can meet the requirements of testing potentiometers before disassembly (potentiometers installed in electric valves) and after disassembly (independent potentiometers). When testing the potentiometers in both states, the potentiometers can truly simulate their actual working states, which improves the flexibility of the potentiometer valve position tester and meets the requirements of potentiometer testing in various environments, effectively improving the accuracy and efficiency of the test.

[0066] When the present invention is in use: when testing the potentiometer installed in the electric valve, the electric valve is connected through the electric valve connection port 11 of the main control system 10, and the power control module 13 controls the movement of the electric valve, thereby driving the rotating shaft to rotate, and the acquisition module 12 records the rotation angle information of the rotating shaft and the corresponding resistance signal; when the potentiometer is disassembled for testing, the main body is installed on the mounting portion 100 on the speed control mechanism 23, and the drive motor 211 simulates the rotation of the electric valve to drive the rotation of the rotating shaft, and the angle sensor 212 records the rotation angle of the output shaft of the drive motor 211 (equivalent to the potentiometer). During this process, the main control system 10 transmits the control signal (such as the direction and speed of power) to the speed control mechanism 23, and the speed control mechanism 23 transmits the resistance signal to the main control system 10.

[0067] The potentiometer valve position feedback tester provided by the utility model can meet the test of the potentiometer before disassembly (potentiometer installed in the electric valve) and the test of the potentiometer after disassembly (independent potentiometer). When testing the potentiometer in the two states, the potentiometer can truly simulate the actual working state of the potentiometer, thereby improving the flexibility of the potentiometer valve position tester, meeting the test of the potentiometer in various different environments, and effectively improving the accuracy and efficiency of the test.

[0068] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they 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, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A potentiometer valve position feedback tester, the potentiometer comprising a main body, a rotating shaft rotatably mounted in the main body, and a pin mounted on the main body, characterized in that: include: Base (1); A drive motor (211), the drive motor (211) being mounted on the base (1) and comprising two output shafts, one of the two output shafts being provided with a mounting portion (100) for detachably mounting the rotating shaft; an angle sensor (212), the angle sensor (212) being arranged on the base (1) and connected to the other of the two output shafts, and being used to record the rotation angle of the rotating shaft; as well as A clamp (252) is mounted on the base (1) to operably hold the main body near the mounting portion (100) and allow the rotating shaft to cooperate with the mounting portion (100).

2. A potentiometer valve position feedback tester according to claim 1, characterized in that: A freely adjustable support rod (251) is also mounted on the base (1), the clamp (252) is mounted on one side of the support rod (251), and a locking member (253) for adjusting the tightness is mounted on the clamp (252).

3. A potentiometer valve position feedback tester according to claim 1, characterized in that: The base (1) is further provided with a first coupling element (213), a second coupling element (214), an angle sensor (212), and a sensor bracket (215); The first coupling element (213) is mounted on one of the two output shafts, the second coupling element (214) is mounted on the other of the two output shafts, the mounting portion (100) is provided on the first coupling element (213), the angle sensor (212) is mounted on the second coupling element (214), the sensor bracket (215) is mounted on the base (1), the angle sensor (212) is mounted on the sensor bracket (215), and the angle sensor (212) is connected to the second coupling element (214).

4. A potentiometer valve position feedback tester according to claim 1, characterized in that: A speed control mechanism (23) is installed on the base (1), the speed control mechanism (23) is electrically connected to the drive motor (211), and the speed control mechanism (23) is electrically connected to the main control system (10).

5. A potentiometer valve position feedback tester according to claim 4, characterized in that: The main control system (10) includes an electric valve connection port (11), a collection module (12) and a power control module (13); The electric valve connection port (11) is used for electrically connecting pins. The electric valve connection port (11), the acquisition module (12), and the power control module (13) are electrically connected in sequence. The power control module (13) is electrically connected to the speed control mechanism (23).

6. A potentiometer valve position feedback tester according to claim 5, characterized in that: The acquisition module (12) includes but is not limited to a programmable controller, an A / D module, and a single-chip circuit board card.

7. The potentiometer valve position feedback tester according to claim 5, characterized in that: The power control module (13) includes a phase sequence switch, and also includes but is not limited to a contactor, a relay, and a thyristor component.

8. The potentiometer valve position feedback tester according to claim 5, characterized in that: The main control system (10) further comprises an AC / DC module (14), and the AC / DC module (14) is electrically connected to the power control module (13) via the acquisition module (12).

9. The potentiometer valve position feedback tester according to claim 4, characterized in that: The base (1) is provided with a box (22), and the box (22) is provided with a signal input and output terminal (24), and the signal input and output terminal (24) includes a power button (241), an adjustment knob (242), a resistance signal output interface (243) and a control signal input interface (244); The power button (241), the adjustment knob (242), the resistance signal output interface (243) and the control signal input interface (244) are all mounted on the box (22), and the adjustment knob (242) is electrically connected to the speed control mechanism (23).

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