Function verification device for speed regulator

Abstract

The utility model belongs to the technical field of governor function verification, and discloses a governor function verification device, which comprises a main frame body, and a motor, a no-load voltmeter, a torque meter and a reference governor which are arranged on the main frame body. The no-load voltmeter, the speed regulator to be tested and the motor are electrically connected to form a first loop. The no-load voltmeter displays the no-load voltage of the motor. The torque meter is used for changing the load connected to the motor; the reference speed regulator, the to-be-tested speed regulator and the motor are electrically connected to form a second loop, the reference speed regulator and the to-be-tested speed regulator are used for displaying the rotating speed of the motor, and the reference speed regulator is used for providing reference for the to-be-tested speed regulator. The utility model provides the speed regulator function verification device which integrates three-step tests of no-load voltage, rotating speed change rate and steady speed precision and is simple to operate, so that the convenience of the no-load voltage test is improved, and a load is accessed under the condition that a motor is not stopped; and the rotating speed change rate and the stable speed precision test result of the speed regulator to be tested are accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of speed regulator function verification, in particular to a speed regulator function verification device. Background Art

[0002] During the production process of the speed regulator, the functions of the speed regulator need to be tested, such as no-load voltage test, speed change rate test and steady speed accuracy test. In the prior art, before performing the above tests, the speed regulator needs to be electrically connected to the motor, and then tests such as no-load voltage, speed change rate and steady speed accuracy are performed.

[0003] The no-load voltage test method in the prior art is as follows: use a multimeter to connect to the excitation end of the motor or the connection terminal of the speed regulator, adjust the gear of the multimeter to DC, do not start the power supply of the motor, start the power supply of the speed regulator, and adjust the knob of the speed regulator to the maximum, and observe whether the reading of the multimeter is between 80V-90V.

[0004] The speed change rate test method in the prior art is: when the motor is unloaded, start the power supply of the motor and the power supply of the speed regulator, adjust the knob of the speed regulator panel from minimum to maximum, at this time the tachometer on the speed regulator panel should display 0r / min increase to 1300r / min, and then set the speed to a fixed value (such as 1000r / min); then turn off the power supply of the motor and the power supply of the speed regulator, connect the load to the motor, start the power supply of the motor and the power supply of the speed regulator again, observe the speed of the motor after adding the load, and compare it with the speed of the motor under no-load.

[0005] The steady speed accuracy test method in the prior art is: start the power supply of the motor and the power supply of the speed regulator, and connect the motor to the load, then adjust the knob of the speed regulator panel from minimum to maximum, at this time the tachometer on the speed regulator panel should display 0r / min increase to 1300r / min, then set the speed to a fixed value (such as 1000r / min), observe the swing range of the pointer of the speed regulator panel, and compare it with the rated speed.

[0006] The above test method has the following defects: 1) When the speed regulator is performing a no-load voltage test, since a multimeter needs to be connected to the wiring terminals of the speed regulator, the speed regulator cannot be equipped with a casing during the test. The speed regulator is tested without casing protection, and internal components of the speed regulator are easily damaged due to vibration, and the use of a multimeter for testing is inconvenient; 2) When the speed regulator is performing a speed change rate and steady speed accuracy test, the speed regulator test is inaccurate due to the lack of a reference; 3) When the speed regulator is performing a speed change rate test, the motor needs to be stopped when the motor is connected to a load, which makes the operation cumbersome. Utility Model Content

[0007] The utility model aims to provide a speed regulator function verification device, which is used for testing the no-load voltage, speed change rate and steady speed accuracy of the speed regulator to be tested, has simple operation and accurate test results.

[0008] To achieve this purpose, the utility model adopts the following technical solutions:

[0009] A speed regulator function verification device is used to perform a function test on the speed regulator to be tested, and the speed regulator function verification device comprises:

[0010] Main frame;

[0011] Electric motor;

[0012] A no-load voltage meter, used to display the no-load voltage of the motor;

[0013] A torque meter, arranged on the main frame, and used for changing the load connected to the motor;

[0014] A reference speed regulator is arranged on the main frame. The reference speed regulator, the speed regulator to be tested and the motor are electrically connected to form a second circuit. The reference speed regulator and the speed regulator to be tested are both used to display the speed of the motor, and the reference speed regulator is used to provide a reference for the speed regulator to be tested.

[0015] As an optional solution, the no-load voltmeter is arranged on the main frame, and the no-load voltmeter, the speed regulator to be tested and the motor are electrically connected to form a first circuit.

[0016] As an optional solution, it also includes an excitation ammeter arranged on the main frame, the excitation ammeter is connected in parallel to the first circuit, and the excitation ammeter is used to display the current of the motor.

[0017] As an optional solution, it also includes a three-phase tachometer arranged on the main frame, the three-phase tachometer is connected in series to the second circuit, and the three-phase tachometer is used to display the speed of the motor.

[0018] As an optional solution, it also includes a voltage regulator and a power supply voltmeter arranged on the main frame, the power supply voltmeter, the speed regulator to be tested, the voltage regulator and the power supply of the speed regulator to be tested are electrically connected to form a third circuit, the voltage regulator is used to adjust the voltage of the power supply of the speed regulator to be tested, and the power supply voltmeter is used to display the voltage adjusted by the voltage regulator.

[0019] As an optional solution, it also includes an overload protector arranged on the main frame, and the overload protector is connected in series to the third circuit.

[0020] As an optional solution, the main frame is provided with an extension platform, the extension platform is provided with a mounting groove, and the speed regulator to be tested is arranged in the mounting groove.

[0021] As an optional solution, a first installation cavity is provided at the lower portion of the main frame, and the motor is disposed in the first installation cavity.

[0022] As an optional solution, a second installation cavity is provided at the lower portion of the main frame, and the voltage regulator is disposed in the second installation cavity.

[0023] As an optional solution, it also includes a first button assembly, a second button assembly and a third button assembly arranged on the main frame, the first button assembly is used to control the start and stop of the power supply of the motor, the second button assembly is used to control the start and stop of the excitation end of the motor, and the third button assembly is used to control the start and stop of the power supply of the speed regulator to be tested.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides a speed regulator function verification device which integrates three-step tests of no-load voltage, speed change rate and steady-speed accuracy and is easy to operate. By arranging a no-load voltmeter to replace the use of a multimeter for testing, the convenience of no-load voltage testing is improved, and the speed regulator to be tested can be installed in a casing for testing, thereby avoiding the problem of damage to the speed regulator to be tested due to vibration; and by arranging a torque meter, different loads can be connected without stopping the motor; and by arranging a reference speed regulator, a reference can be provided for the speed regulator to be tested, so as to ensure that the speed change rate and steady-speed accuracy test results of the speed regulator to be tested are accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a speed regulator function verification device provided by an embodiment of the utility model;

[0027] Figure 2 It is a circuit principle diagram of a speed regulator function verification device provided by an embodiment of the utility model.

[0028] In the figure:

[0029] 100, speed regulator to be tested; 101, third start button; 102, third close button;

[0030] 1. Main frame; 11. Extension platform; 12. First installation cavity; 13. Second installation cavity; 2. Motor; 21. First start button; 22. First close button; 23. Second start button; 24. Second close button; 3. No-load voltmeter; 4. Torque meter; 5. Reference speed regulator; 6. Three-phase tachometer; 7. Voltage regulator; 8. Power supply voltmeter; 9. Overload protector; 10. Potentiometer; 20. Excitation current meter. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] like Figure 1-Figure 2 As shown, the embodiment of the utility model provides a speed regulator function verification device for performing a function test on a speed regulator to be tested 100. The speed regulator function verification device includes a main frame 1, a motor 2, a no-load voltmeter 3, a torque meter 4 and a reference speed regulator 5 (which is a calibrated speed regulator). Among them, the no-load voltmeter 3, the torque meter 4 and the reference speed regulator 5 are all arranged on the main frame 1.

[0036] The no-load voltmeter 3, the speed regulator 100 to be tested and the motor 2 are electrically connected to form a first circuit. Specifically, the no-load voltmeter 3 is connected in series to the 3 / 4 terminal of the speed regulator 100 to be tested and the excitation terminal F1 / F2 of the motor 2 to form a first circuit. When the power supply (AC380V) of the motor 2 is not started, the first knob of the speed regulator 100 to be tested is adjusted to the maximum. The no-load voltmeter 3 displays the no-load voltage of the excitation terminal of the motor 2. If the no-load voltage of the excitation terminal of the motor 2 is between 80V-90V, the no-load voltage test of the speed regulator 100 to be tested meets the set requirements. By setting the no-load voltmeter 3 on the main frame 1 instead of using a multimeter for testing, the convenience of the no-load voltage test is improved, and the speed regulator 100 to be tested can be installed in a casing for testing, avoiding the problem of damage to the speed regulator 100 to be tested due to vibration.

[0037] The torque meter 4 is used to change the load connected to the motor 2. By setting the torque meter 4, the load connected to the motor 2 can be changed from no-load to rated load when the power supply of the motor 2 is started.

[0038] The reference speed regulator 5, the speed regulator to be tested 100 and the motor 2 are electrically connected to form a second loop, and the reference speed regulator 5 and the speed regulator to be tested 100 are both used to display the speed of the motor 2, and the reference speed regulator 5 is used to provide a reference for the speed regulator to be tested 100. Specifically, the excitation terminal F1 / F2 of the motor 2, the 3 / 4 terminal of the speed regulator to be tested 100 and the 3 / 4 terminal of the reference speed regulator 5 form one loop, and the feedback terminal U / V / W of the motor 2, the 5 / 6 / 7 terminal of the speed regulator to be tested 100 and the 5 / 6 / 7 terminal of the reference speed regulator 5 form another loop, and the above two loops constitute the second loop.

[0039] When testing the speed change rate of the speed regulator 100 to be tested, the speed of the speed regulator 100 to be tested can be calibrated by using the reference speed regulator 5. The calibration steps are as follows: adjust the first knob of the speed regulator 100 to the maximum, then use a flat-blade screwdriver to adjust the prohibition adjustment knob on the panel of the speed regulator 100 to be tested clockwise, observe that the speed displayed on the reference speed regulator 5 is 1300r / min and then stop, then adjust the tachometer calibration knob on the speed regulator panel of the speed regulator 100 to make the displayed speeds of the speed regulator 100 to be tested and the reference speed regulator 5 consistent, and then reciprocate to adjust the first knob of the speed regulator 100 to be tested. At this time, The displayed speeds of the test speed regulator 100 and the reference speed regulator 5 will change with the adjustment of the first knob of the speed regulator 100 to be tested. Then, the speed of the speed regulator 100 to be tested is set to a fixed value (such as 1000r / min), and the torque meter 4 is started to connect the motor 2 to different loads. For example, when the motor 2 is connected to a load of 0% (i.e., no load), the speed regulator 100 to be tested displays a speed. When the motor 2 is connected to a load of 10%, the speed displayed by the test speed regulator 100 is then viewed, and the two speeds are compared to see whether the ratio meets the requirements. If the ratio meets the requirements, the speed change rate of the speed regulator 100 to be tested meets the requirements. By setting the reference speed regulator 5, a reference can be provided for the speed regulator 100 to be tested, so as to ensure that the speed change rate test result of the speed regulator 100 to be tested is accurate; and by setting the torque meter 4, different loads can be connected to the motor 2 without stopping.

[0040] When testing the steady speed accuracy of the speed regulator to be tested, first return the first knob of the speed regulator 100 to zero, wait until the first speed of the motor 2 returns to zero, turn off the torque meter 4 and disconnect the load connected to the motor 2, then adjust the first knob of the speed regulator 100 to adjust the speed of the motor 2 to a fixed value (such as 1000r / min) and run for 1 minute, and observe the speed change value of the reference speed regulator 5, and compare this speed change value with the rated speed of the speed regulator 100 to be tested. If the ratio meets the requirements, the steady speed accuracy of the speed regulator 100 to be tested meets the requirements. By setting the reference speed regulator 5, a reference can be provided for the speed regulator 100 to ensure that the steady speed accuracy test result of the speed regulator 100 to be tested is accurate.

[0041] The utility model provides a speed regulator function verification device which integrates three-step tests of no-load voltage, speed change rate and steady-speed accuracy and is easy to operate. By setting a no-load voltmeter 3 to replace the use of a multimeter for testing, the convenience of no-load voltage testing is improved, and the speed regulator 100 to be tested can be installed in a casing for testing, thereby avoiding the problem of damage to the speed regulator 100 to be tested due to vibration; and by setting a torque meter 4, different loads can be connected without stopping the motor 2; and by setting a reference speed regulator 5, a reference can be provided for the speed regulator 100 to be tested, so as to ensure that the speed change rate and steady-speed accuracy test results of the speed regulator 100 to be tested are accurate.

[0042] Furthermore, in order to ensure the accuracy of the motor 2, the speed regulator function verification device also includes a three-phase tachometer 6 arranged on the main frame 1, and the three-phase tachometer 6 is connected in series to the second circuit, and the three-phase tachometer 6 can display the speed of the motor 2. Specifically, the three-phase tachometer 6 is a voltage sampling and is connected in series to the feedback terminal U / V / W of the motor 2, the 5 / 6 / 7 terminal of the speed regulator 100 to be tested, and the 5 / 6 / 7 terminal of the reference speed regulator 5 to form another circuit. The three-phase tachometer 6 can directly display the speed of the motor 2. When the speed of the speed regulator 100 to be tested is calibrated, the speed displayed by the speed regulator 100 to be tested, the reference speed regulator 5 and the three-phase tachometer 6 are consistent, indicating that the displayed speed of the speed regulator 100 to be tested is correct and the motor 2 is running normally. The three-phase tachometer 6 can be a three-phase pointer tachometer or a three-phase digital tachometer.

[0043] In order to test whether the voltage of the power supply (AC220V) of the speed regulator 100 to be tested meets the requirements, the speed regulator function verification device also includes a voltage regulator 7 (AC voltage regulator) and a power supply voltage meter 8 arranged on the main frame 1. The power supply voltage meter 8, the speed regulator 100 to be tested, the voltage regulator 7 and the power supply of the speed regulator are electrically connected to form a third circuit. The voltage regulator 7 is used to adjust the voltage of the power supply of the speed regulator, and the power supply voltage meter 8 can display the voltage of the power supply of the speed regulator. Specifically, the power supply voltage meter 8, the 1 / 2 terminal of the speed regulator 100 to be tested, the voltage regulator 7 and the power supply of the speed regulator 100 to be tested are connected in series to form a third circuit. After the power supply of the speed regulator is started, the first knob of the speed regulator 100 to be tested is adjusted to the maximum, and the voltage regulator 7 is adjusted. The power supply voltage meter 8 displays the voltage of the power supply of the speed regulator 100 to be tested. If the displayed voltage is between 198V-242V, it means that the voltage of the power supply of the speed regulator 100 to be tested meets the design requirements.

[0044] Furthermore, the speed regulator function verification device also includes an overload protector 9 arranged on the main frame 1. The overload protector 9 is a small circuit breaker. The overload protector 9 is connected in series to the third circuit to provide overload protection.

[0045] The speed regulator function verification device also includes a potentiometer 10 disposed on the main frame 1, and the potentiometer 10 is used to control the voltage regulator 7 to adjust the voltage of the power supply of the speed regulator 100 to be tested in real time. Specifically, a second knob is provided on the potentiometer 10 to facilitate the adjustment of the power supply of the speed regulator 100 to be tested. The circuit connection between the potentiometer 10 and the voltage regulator 7 is a prior art and will not be described in detail here.

[0046] In order to test the actual current of the excitation end of the motor 2, the speed regulator function verification device also includes an excitation ammeter 20 arranged on the main frame 1, and the excitation ammeter 20 is connected in parallel to the first circuit. Specifically, the excitation ammeter 20 is connected in parallel to the 3 / 4 terminal of the speed regulator 100 to be tested and the excitation end F1 / F2 of the motor 2, and the excitation ammeter 20 can display the current of the excitation end of the motor 2.

[0047] The speed regulator function verification device improves the test efficiency and convenience by using the no-load voltmeter 3, the power supply voltmeter 8 and the excitation ammeter 20 instead of the multimeter for testing.

[0048] In order to facilitate the installation of the speed regulator 100 to be tested, an extension platform 11 is provided on the main frame 1, and a mounting groove is provided on the extension platform 11. The speed regulator 100 to be tested is arranged in the mounting groove, making the installation of the speed regulator 100 to be tested more convenient.

[0049] In order to facilitate the installation of the motor 2 , a first installation cavity 12 is provided at the lower portion of the extension platform 11 of the main frame 1 , and the motor 2 is disposed in the first installation cavity 12 .

[0050] In order to facilitate the installation of the voltage regulator 7 , the main frame 1 is provided with a second installation cavity 13 at the lower portion of the extension platform 11 , and the voltage regulator 7 is arranged in the second installation cavity 13 .

[0051] In other embodiments, the motor 2 and the voltage regulator 7 may also be disposed outside the main frame 1 to reduce the volume of the main frame 1 .

[0052] The speed regulator function verification device also includes a first button assembly, a second button assembly and a third button assembly arranged on the main frame 1, the first button assembly is used to control the start and shut down of the power supply of the motor 2, the second button assembly is used to control the start and shut down of the excitation end of the motor 2, and the third button assembly is used to control the start and shut down of the power supply of the speed regulator 100 to be tested. Specifically, the first button assembly includes a first start button 21 and a first shut down button 22, the first start button 21 is used to control the start of the power supply of the motor 2, and the first shut down button 22 is used to control the shut down of the power supply of the motor 2; the second button assembly includes a second start button 23 and a second shut down button 24, the second start button 23 is used to control the start of the excitation end of the motor 2, and the second shut down button 24 is used to control the shut down of the excitation end of the motor 2; the third button assembly includes a third start button 101 and a third shut down button 102, the third start button 101 is used to control the start of the power supply of the speed regulator 100 to be tested, and the third shut down button 102 is used to control the shut down of the power supply of the speed regulator 100 to be tested.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A speed regulator function test device, used for performing a function test on a speed regulator (100) to be tested, characterized in that: The speed regulator function verification device comprises: Main frame (1); Electric motor (2); A no-load voltage meter (3), used for displaying the no-load voltage of the motor (2); A torque meter (4) is arranged on the main frame (1), and the torque meter (4) is used to change the load connected to the motor (2); A reference speed regulator (5) is arranged on the main frame (1); the reference speed regulator (5), the speed regulator to be tested (100) and the motor (2) are electrically connected to form a second circuit; the reference speed regulator (5) and the speed regulator to be tested (100) are both used to display the rotation speed of the motor (2), and the reference speed regulator (5) is used to provide a reference for the speed regulator to be tested (100).

2. The speed regulator function verification device according to claim 1, characterized in that: The no-load voltmeter (3) is arranged on the main frame (1); the no-load voltmeter (3), the speed regulator to be tested (100) and the motor (2) are electrically connected to form a first circuit.

3. The speed regulator function verification device according to claim 2, characterized in that: It also includes an excitation ammeter (20) arranged on the main frame (1), the excitation ammeter (20) is connected in parallel to the first circuit, and the excitation ammeter (20) is used to display the current of the motor (2).

4. The speed regulator function verification device according to claim 1, characterized in that: It also includes a three-phase tachometer (6) arranged on the main frame (1), the three-phase tachometer (6) is connected in series to the second circuit, and the three-phase tachometer (6) is used to display the rotation speed of the motor (2).

5. The speed regulator function verification device according to claim 1, characterized in that: It also includes a voltage regulator (7) and a power supply voltage meter (8) arranged on the main frame (1); the power supply voltage meter (8), the speed regulator (100) to be tested, the voltage regulator (7) and the power supply of the speed regulator (100) to be tested are electrically connected to form a third circuit; the voltage regulator (7) is used to adjust the voltage of the power supply of the speed regulator (100) to be tested, and the power supply voltage meter (8) is used to display the voltage adjusted by the voltage regulator (7).

6. The speed regulator function verification device according to claim 5, characterized in that: It also includes an overload protector (9) arranged on the main frame (1), and the overload protector (9) is connected in series to the third circuit.

7. The speed regulator function verification device according to claim 1, characterized in that: The main frame (1) is provided with an extension platform (11), the extension platform (11) is provided with a mounting groove, and the speed regulator (100) to be tested is arranged in the mounting groove.

8. The speed regulator function verification device according to claim 1, characterized in that: A first installation cavity (12) is provided at the lower part of the main frame (1), and the motor (2) is arranged in the first installation cavity (12).

9. The speed regulator function verification device according to claim 5, characterized in that: A second installation cavity (13) is provided at the lower part of the main frame (1), and the voltage regulator (7) is arranged in the second installation cavity (13).

10. The speed regulator function verification device according to claim 1, characterized in that: It also includes a first button assembly, a second button assembly and a third button assembly arranged on the main frame (1), wherein the first button assembly is used to control the start and stop of the power supply of the motor (2), the second button assembly is used to control the start and stop of the excitation end of the motor (2), and the third button assembly is used to control the start and stop of the power supply of the speed regulator (100) to be tested.

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