Frequency converter chopper test platform

Abstract

The invention discloses a frequency converter chopper test platform, and belongs to the technical field of frequency converter chopper testing, the test platform comprises a tester, one side of the tester is provided with an output voltage display window, an output wiring terminal, a to-be-tested equipment current protection device and an output voltage adjusting knob, according to the device, the frequency converter chopper can be conveniently and rapidly tested, and the protection shell convenient to disassemble is arranged, so that the safety and the practicability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency converter chopper testing, and more particularly to a frequency converter chopper testing platform. Background Art

[0002] Currently, after the frequency converter chopper is repaired, there has been no suitable testing platform to test the chopper. Generally, it is returned to the user and tested during actual operation after installation. The operating voltage of key parameters cannot be measured. After on-site installation, it still cannot be measured, and there is no protection device during measurement, resulting in low safety. Summary of the Invention

[0003] To make up for the above deficiencies, the present invention provides a frequency converter chopper testing platform, aiming to improve the problems of inconvenient measurement and low safety during measurement of the frequency converter chopper.

[0004] The present invention is implemented as follows: The frequency converter chopper testing platform includes a tester, and an output voltage display window, output connection terminals, a current protection setting for the device under test, and an output voltage adjustment knob are respectively installed on one side of the tester.

[0005] In a preferred technical solution of the present invention, one end of the output connection terminal is movably plugged into a DC adjustable power supply. The output connection terminal is electrically connected to the output voltage display window and the output voltage adjustment knob. The DC adjustable power supply generates a test voltage for the device under test. When the operating voltage value of the device under test is reached, it will be displayed in the output voltage display window, and the device under test will be prompted to act. By observing the output voltage value of the DC adjustable power supply, the operating voltage value of the device under test can be obtained, and this value is compared with the nominal value of the device under test to determine whether the device under test is working properly.

[0006] In a preferred technical solution of the present invention, a protective shell is installed outside the tester, and fans are installed on both sides of the protective shell. The wind directions of the two fans are set in opposite directions.

[0007] In a preferred technical solution of the present invention, grooves are symmetrically arranged on both sides of the protective shell. Positioning blocks are arranged in the grooves. The positioning blocks are hollow and open on one side. A plurality of springs are fixedly installed between the inner wall of the positioning block and one side of the inner wall of the groove. A pull rod is fixedly installed on one side of the inner wall of the positioning block. One end of the pull rod slides through the protective shell and is fixedly installed with a pull plate. Positioning grooves matching the positioning blocks are arranged on both sides of the tester. The two positioning blocks are symmetrically arranged in the protective shell, and the plurality of springs are arranged at equal intervals in the grooves.

[0008] In a preferred technical solution of the present invention, a pull ring is rotatably installed on the outer side of the pull plate.

[0009] In a preferred technical solution of the present invention, high-pressure gas cylinders are symmetrically and fixedly installed at both sides of the bottom end of the inner wall of the protective shell. The output end of the high-pressure gas cylinder is connected to a dry powder box through an output pipe. A spray head is installed on one side of the dry powder box. A diaphragm is fixedly installed in the spray head. An electromagnetic valve is installed on the output pipe. Dry powder is filled in the inner cavity of each dry powder box. The diameter of the spray head gradually increases in the direction away from the dry powder box. The spraying direction of the spray head is inclined and the spraying direction is the center of the protective shell.

[0010] In a preferred technical solution of the present invention, a temperature sensor and a controller are respectively fixedly installed on the inner wall of the protective shell. The temperature sensor and the electromagnetic valve are both electrically connected to the controller.

[0011] The beneficial effects of the present invention are as follows: The inverter chopper test platform obtained by the above design of the present invention, when in use, inserts a DC power supply into the output connection terminal to generate a test voltage for the device under test and displays it on the output voltage display window. When the voltage value of the device under test is reached, by observing the output voltage value of the DC adjustable power supply, the operating voltage value of the device under test can be obtained. This value is compared with the nominal value of the device under test to know whether the device under test is working properly. At the same time, when the temperature is high during measurement and a fire occurs, the temperature sensor senses the high temperature and transmits information to the controller. The controller controls the electromagnetic valve to open. The high-pressure gas in the high-pressure gas cylinder enters the dry powder box through the output pipe, causing the dry powder in the dry powder box to break through the diaphragm and spray towards the tester. This device is convenient for quickly testing the inverter chopper and is provided with a protective shell that is easy to disassemble, thus improving safety and practicality. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0013] Figure 1 It is a schematic structural diagram of the tester provided by the embodiment of the present invention;

[0014] Figure 2 It is a schematic principle structural diagram of the inverter chopper test platform provided by the embodiment of the present invention;

[0015] Figure 3 It is a schematic structural diagram of the inverter chopper test platform provided by the embodiment of the present invention;

[0016] Figure 4 It is a schematic structural diagram of the protective shell provided by the embodiment of the present invention;

[0017] Figure 5 This is a partial structural schematic diagram of the protective shell provided by the embodiment of the present invention.

[0018] In the figure: 110 - tester; 111 - output voltage display window; 112 - output terminal; 113 - current protection setting for the device under test; 114 - output voltage adjustment knob; 120 - protective shell; 121 - fan; 122 - positioning block; 123 - spring; 124 - pull rod; 125 - pull plate; 126 - pull ring; 130 - high-pressure gas cylinder; 131 - output pipe; 132 - dry powder box; 133 - nozzle; 134 - solenoid valve; 135 - temperature sensor; 136 - controller. Specific embodiments

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 and Figure 2 The present invention provides a technical solution: a frequency converter chopper test platform, including a tester 110. On one side of the tester 110, an output voltage display window 111, an output terminal 112, a current protection setting 113 for the device under test, and an output voltage adjustment knob 114 are respectively installed. One end of the output terminal 112 is movably inserted into a DC adjustable power supply. The output terminal 112 is electrically connected to the output voltage display window 111 and the output voltage adjustment knob 114. The DC adjustable power supply generates a test voltage for the device under test. When the operating voltage value of the device under test is reached, it will be displayed in the output voltage display window 111, and the device under test will be prompted to act. By observing the output voltage value of the DC adjustable power supply, the operating voltage value of the device under test can be obtained, and this value is compared with the nominal value of the device under test to determine whether the device under test is working properly.

[0021] Please refer to Figures 3 - 5, a protective shell 120 is installed outside the tester 110. Fans 121 are installed on both sides of the protective shell 120, and the wind directions of the two fans 121 are set to be opposite. Grooves are symmetrically arranged on both sides of the protective shell 120. Positioning blocks 122 are arranged in the grooves. The positioning blocks 122 are hollow and open on one side. A plurality of springs 123 are fixedly installed between the inner wall of the positioning block 122 and one side of the inner wall of the groove. A pull rod 124 is fixedly installed on one side of the inner wall of the positioning block 122. One end of the pull rod 124 slides through the protective shell 120 and is fixedly installed with a pull plate 125. Positioning grooves matching the positioning blocks 122 are arranged on both sides of the tester 110. The two positioning blocks 122 are symmetrically arranged in the protective shell 120. The plurality of springs 123 are arranged at equal intervals in the grooves. High-pressure gas cylinders 130 are symmetrically and fixedly installed at both sides of the bottom end of the inner wall of the protective shell 120. The output ends of the high-pressure gas cylinders 130 are connected to powder boxes 132 through output pipes 131. A spray head 133 is installed on one side of the powder box 132. A diaphragm is fixedly installed in the spray head 133. An electromagnetic valve 134 is installed on the output pipe 131. Each internal cavity of the powder box 132 is filled with powder. The diameter of the spray head 133 gradually increases in the direction away from the powder box 132. The spraying direction of the spray head 133 is inclined, and the spraying direction is the center of the protective shell 120.

[0022] In some specific embodiments, a pull ring 126 is rotatably installed outside the pull plate 125. By pulling the pull plate 125, the positioning block 122 is driven to move, so as to quickly disassemble and install the protective shell 120.

[0023] In some specific embodiments, a temperature sensor 135 and a controller 136 are respectively fixedly installed on the inner wall of the protective shell 120. The temperature sensor 135 and the electromagnetic valve 134 are both electrically connected to the controller 136. The tester 110 is automatically extinguished through the cooperation of the temperature sensor 135 and the controller 136.

[0024] Working principle: When in use, insert the DC power supply into the output terminal 112 to generate the test voltage of the device under test and display it on the output voltage display window 111. When the voltage value of the device under test is reached, by observing the output voltage value of the DC adjustable power supply, the operating voltage value of the device under test can be obtained. This value is compared with the nominal value of the device under test to know whether the device under test works normally. At the same time, when it catches fire at a high temperature during measurement, the temperature sensor 135 senses the high temperature and transmits information to the controller 136. The controller 136 controls the electromagnetic valve 134 to open. The high-pressure gas in the high-pressure gas cylinder 130 enters the powder box 132 through the output pipe 131, so that the powder in the powder box 132 breaks through the diaphragm and sprays towards the tester 110.

[0025] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The inverter chopper test platform is characterized by: The tester comprises an output voltage display window, an output wiring terminal, a current protection setting of a device to be tested and an output voltage adjustment knob.

2. The inverter chopper test platform according to claim 1, characterized in that: One end of the output wiring terminal is movably connected to a DC adjustable power supply, and the output wiring terminal is electrically connected to the output voltage display window and the output voltage adjustment knob.

3. The inverter chopper test platform according to claim 1, characterized in that: A protective shell is installed on the outside of the tester, and fans are installed on both sides of the protective shell.

4. The inverter chopper test platform according to claim 3, characterized in that: Grooves are symmetrically arranged on both sides of the protective shell, and positioning blocks are arranged in the grooves. The positioning blocks are hollow and have an opening on one side. Multiple springs are fixedly installed between the inner wall of the positioning block and one side of the inner wall of the groove. A pull rod is fixedly installed on one side of the inner wall of the positioning block. One end of the pull rod slides through one side of the protective shell and fixes the pull plate. Positioning grooves matching the positioning blocks are arranged on both sides of the tester.

5. The inverter chopper test platform according to claim 4, characterized in that: The pull ring is rotatably mounted on the outer side of the pull plate.

6. The inverter chopper test platform according to claim 3, characterized in that: High-pressure gas cylinders are symmetrically fixedly installed on both sides of the bottom end of the inner wall of the protective shell, and the output end of the high-pressure gas cylinder is connected to the dry powder box through an output pipe. A nozzle is installed on one side of the dry powder box, a diaphragm is fixedly installed in the nozzle, and a solenoid valve is installed on the output pipe.

7. The inverter chopper test platform according to claim 6, characterized in that: A temperature sensor and a controller are fixedly mounted on the inner wall of the protective shell, respectively. The temperature sensor and the solenoid valve are both electrically connected to the controller.

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