CN220171159U

CN220171159U - Power unit test cabinet

Info

Publication number: CN220171159U
Application number: CN202320998909.5U
Authority: CN
Inventors: 马亚楠; 刘兴强; 高大伟; 张艳兵
Original assignee: Shougang Group Co Ltd
Current assignee: Shougang Group Co Ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-12-12
Anticipated expiration: 2033-04-27

Abstract

The utility model discloses a power unit test cabinet, which relates to the technical field of test cabinets and comprises a cabinet body supporting frame, wherein a detection area panel is arranged at the upper part of the cabinet body supporting frame, a trigger and an oscilloscope are embedded and arranged on the detection area panel, an operation area panel is arranged at the lower side of the detection area panel, a voltmeter and an ammeter are embedded and arranged on the operation area panel, a display lamp and an operation button are arranged at the right side of the ammeter, an oscilloscope binding post and a power unit binding post are embedded and arranged at the left end of the lower part of the operation area panel, the rear end of the power unit binding post is connected with a load incandescent lamp, five load incandescent lamps are arranged in the middle part of the load area panel, a bearing channel steel is welded at the right end of the lower part of the cabinet body supporting frame, and an autotransformer is arranged at the upper side of the bearing channel steel. The utility model has reasonable overall structure design and strong practicability, not only meets the requirement that the power unit can complete two testing methods of no-load test and simulated load test on the test cabinet, but also improves the testing efficiency.

Description

Power unit test cabinet

Technical Field

The utility model relates to the technical field of test cabinets, in particular to a power unit test cabinet.

Background

The power units are important components of the high-voltage frequency converter, and each power unit is of an independent structure and mainly comprises rectifying, inverting IGBT and electrolytic capacitors. The high-voltage frequency converter changes the output voltage of the power units by adjusting the IGBT trigger angle of each power unit, thereby realizing the purpose of regulating the speed of the high-voltage motor, further realizing the energy-saving and high-efficiency operation of the high-voltage motor, and simultaneously, the high-voltage frequency converter also has the functions of starting protection, overload protection, overcurrent protection and the like, and is widely applied to the metallurgical mine industry.

In the traditional power unit test system, only static test detection and no-load test functions are provided, and no load test function is provided, because the power units of all power classes need different levels of motor loads when carrying out load tests, the number of motors is various and redundant, the independent power units do not have a trigger function, and different levels of direct current power supplies and alternating current power supplies are also required to be provided independently, the test equipment cost of the power units is very high, the efficiency is very low, and common enterprises and factories and mines do not have maintenance and debugging equipment of the power units.

Disclosure of Invention

The utility model aims to provide a power unit test cabinet, which improves the test efficiency, effectively reduces the workload of staff and saves the cost.

In order to solve the technical problems, the utility model adopts the following technical scheme:

an aspect of the embodiment of the utility model provides a power unit test cabinet, which comprises a cabinet body supporting frame, wherein a detection area panel is arranged at the upper part of the cabinet body supporting frame, a trigger is embedded and arranged at the left part of the detection area panel, a detection oscilloscope is embedded and arranged at the right side of the trigger, and a detection area baffle is arranged at the lower side of the detection area panel; the lower side of the detection area baffle is provided with an operation area panel in the middle of the cabinet body supporting frame, the left end of the upper part of the operation area panel is embedded with a voltmeter, the right side of the voltmeter is provided with an ammeter, the right side of the ammeter is provided with an operation button, the left end of the lower part of the operation area panel is embedded with an oscilloscope binding post, the rear end of the oscilloscope binding post is connected with an oscilloscope, the lower side of the oscilloscope binding post is provided with a power unit binding post, the rear end of the power unit binding post is connected with a load incandescent lamp, the right sides of the power unit binding post and the oscilloscope binding post are provided with an air switch, and the lower side of the operation area panel is provided with the operation area baffle; the cabinet body supporting frame comprises a cabinet body supporting frame, wherein a load area panel is arranged at the left end of the lower part of the cabinet body supporting frame, five load incandescent lamps are arranged in the middle of the load area panel, bearing channel steel is arranged at the right end of the lower part of the cabinet body supporting frame, and an autotransformer is arranged at the upper end of the bearing channel steel.

In some embodiments, a display lamp is mounted on the upper side of the operation button for displaying the operation state of the operation button.

In some embodiments, the front end of the cabinet body supporting frame is provided with a frame opening, and the front end of the cabinet body supporting frame is connected with a cabinet door through a hinge, so that the frame opening can be closed and opened through the cabinet door.

In some embodiments, a cabinet door handle is screwed to the outside of the cabinet door.

In some embodiments, a power zone panel is welded to the rear end of the operating zone panel and the upper surface of the operating zone barrier.

In some embodiments, a circuit breaker is mounted to an upper portion of the power section panel.

In some embodiments, a rectifier bridge is mounted to the lower left end of the power section panel.

In some embodiments, a contactor is mounted to a lower right end of the power zone panel.

In some embodiments, the upper surface of the bearing channel is provided with an autotransformer through a screw connection.

In some embodiments, the detection area panel is connected with the upper portion of the cabinet body supporting frame, the detection area baffle is connected with the lower side of the detection area panel, the operation area panel is connected with the middle portion of the cabinet body supporting frame, the load area panel is connected with the left end of the lower portion of the cabinet body supporting frame, and the bearing channel steel is connected with the right end of the lower portion of the cabinet body supporting frame in a welding mode.

The power unit test cabinet provided by the embodiment of the utility model has at least the following beneficial effects: firstly, connecting the input end of a power unit to be tested to a binding post of the power unit, connecting the output end of the power unit to a binding post of an oscilloscope, opening an air switch of an operation area by an operator, pressing a start operation button, starting power-on no-load detection, starting analog load detection after the no-load detection is finished, observing whether a voltmeter and an ammeter are normal or not after power-on, judging whether a fault display lamp is lightened or not, primarily judging the fault and the reason of the power unit if all the faults are normal or not, opening a trigger, adjusting the triggering angle of the trigger, increasing the output voltage of an autotransformer, observing waveform change of the oscilloscope, judging whether the brightness of a load incandescent lamp and the three-phase voltage of the voltmeter are balanced or not, and further analyzing the fault reason if the phenomena such as waveform abnormality of the oscilloscope, fault display of an IGBT module, the three-phase voltage imbalance and the like occur. The panel area of the power unit test detection cabinet is reasonable in design, and the cabinet body panel is neat, strong in functionality and convenient to operate.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic elevational structural view according to an embodiment;

FIG. 2 is a right-side schematic view of an embodiment;

FIG. 3 is a schematic view of a cabinet door connected to a cabinet support frame according to an embodiment;

fig. 4 is a schematic rear view of a structure according to an embodiment.

The reference numerals are explained as follows: 1. a cabinet support frame; 2. a detection zone panel; 3. an oscilloscope; 4. a trigger; 5. an operation area panel; 6. a button; 7. a display lamp; 8. a voltmeter; 9. an ammeter; 10. a detection zone baffle; 11. the oscillograph binding post; 12. a power unit terminal; 13. a load zone panel; 14. loading an incandescent lamp; 15. an autotransformer; 16. carrying channel steel; 17. a cabinet door handle; 18. a cabinet door; 19. a power supply area panel; 20. an operation area baffle; 21. a circuit breaker; 22. a rectifier bridge; 23. a contactor; 24. an air switch.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.

Preferred embodiments of the present disclosure are further elaborated below in conjunction with fig. 1-4 of the present description.

According to some embodiments, as shown in fig. 1 to 4, the utility model provides a power unit test cabinet, which comprises a cabinet body supporting frame 1, wherein a detection area panel 2 is installed at the upper part of the cabinet body supporting frame 1, a trigger 4 is installed in a left part of the detection area panel 2 in an embedded manner, a detection oscilloscope 3 is installed in a right side of the trigger 4 in an embedded manner, and a detection area baffle 10 is installed at the lower side of the detection area panel 2;

the lower side of the detection area baffle 10 is provided with an operation area panel 5 at the middle part of the cabinet body supporting frame 1, the left end of the upper part of the operation area panel 5 is embedded and provided with a voltmeter 8, the right side of the voltmeter 8 is provided with an ammeter 9, the right side of the ammeter 9 is provided with an operation button 6, the left end of the lower part of the operation area panel 5 is embedded and provided with an oscilloscope terminal 11, the rear end of the oscilloscope terminal 11 is connected with an oscilloscope 3, the lower side of the oscilloscope terminal 11 is provided with a power unit terminal 12, the rear end of the power unit terminal 12 is connected with a load incandescent lamp 14, the right sides of the power unit terminal 12 and the oscilloscope terminal 11 are provided with an air switch 24, and the lower side of the operation area panel 5 is provided with an operation area baffle 20;

the lower left end of the cabinet body supporting frame 1 is provided with a load area panel 13, the middle part of the load area panel 13 is provided with five load incandescent lamps 14, the lower right end of the cabinet body supporting frame 1 is provided with a bearing channel steel 16, and the upper end of the bearing channel steel 16 is provided with an autotransformer 15.

In some embodiments, a display lamp 7 is installed on the upper side of the operation button 6, so as to display the working state of the operation button 6, and facilitate the observation of operators.

In some embodiments, the front end of the cabinet body supporting frame 1 is provided with a frame opening, the front end of the cabinet body supporting frame 1 is connected with a cabinet door 18 through a hinge, and the frame opening can be closed and opened through the cabinet door 18. The cabinet door 18 can be opened during maintenance, and the cabinet door 18 is closed when maintenance is not needed, so that external sundries are prevented from damaging internal devices under the unexpected condition.

In some embodiments, a cabinet door handle 17 is screwed to the outside of the cabinet door 18. The cabinet door handle 17 is arranged, so that an operator can conveniently open the cabinet door 18, and the cabinet door is convenient to detach and overhaul through screw connection.

In some embodiments, as shown in fig. 2 and 4, a power supply area panel 19 is welded to the rear end of the operation area panel 5 and the upper surface of the operation area barrier 20.

Further, a breaker 21 is installed at the upper portion of the power section panel 19.

Further, a rectifier bridge 22 is installed at the left end of the lower portion of the power supply area panel 19.

Further, a contactor 23 is installed at the right end of the lower portion of the power supply area panel 19.

In some embodiments, the upper surface of the bearing channel 16 is provided with an autotransformer 15 by screw connection. The screw connection is convenient for disassembly and maintenance.

In some embodiments, the detection zone panel 2 and the upper portion of the cabinet support frame 1, the detection zone baffle 10 and the lower side of the detection zone panel 2, the operation zone panel 5 and the middle portion of the cabinet support frame 1, the load zone panel 13 and the lower left end of the cabinet support frame 1, and the bearing channel 16 and the lower right end of the cabinet support frame 1 are all connected by welding.

Firstly, an operator inserts an input end wire of a power unit into a power unit binding post 12, inserts an output end of the power unit into an oscilloscope binding post 11, connects the wire of the oscilloscope binding post 11 with a load incandescent lamp 14, connects a trigger 4 to the power unit through optical fibers, opens a circuit breaker 21 after no-load static test preparation work is finished, starts an operation button 6, performs static detection of the power unit, observes a power unit alarm lamp, a voltmeter 8 and an ammeter 9, and primarily judges faults and reasons of the power unit. After the no-load static test is finished, the simulation load detection is started, the trigger angle of the trigger 4 is adjusted, the waveform change of the trigger 4 of the oscilloscope 3 in the driving process is observed, if no abnormality exists, the output voltage of the autotransformer 15 is gradually increased, the changes of the voltmeter 8, the ammeter 9, the oscilloscope 3 and the load incandescent lamp 14 are continuously observed, whether the fault phenomena such as triggering abnormality, phase loss, three-phase unbalance, power module damage and the like occur or not, and the running condition of the power unit is further detected and judged. In the operation process, the detection area panel 2, the operation area panel 5 and the load area panel 13 enable the surface of the test cabinet to be clean and tidy, the operation is easy, the structure design is reasonable, the practicability is high, the two test methods of no-load static detection and simulated load detection of the power unit through the test cabinet are met, the power unit can be ensured to be normally used, the working efficiency is improved, the workload of workers is effectively reduced, and the power unit has the advantages of being good in use effect and the like.

Working principle: when the power unit testing device is used, firstly, the input end of a power unit to be tested is connected with a power unit binding post 12, the output end of the power unit to be tested is connected with an oscilloscope 3, an optical fiber interface is connected with a trigger 4, an operator opens a circuit breaker 21, starts an operation button 6, starts a static no-load test, starts a simulated load test after the static no-load test is finished, detects fault display contents after power-on, and preliminarily judges faults and reasons. If the fault is not displayed, the trigger angle of the trigger is adjusted, the output voltage of the autotransformer 15 is slowly lifted, and if the conditions of abnormal waveform of the oscilloscope 3, unbalanced three-phase voltage and the like occur, the IGBT module or the driving board and the like have faults. The device has the advantages that the device is reasonable in overall design, simple to operate, convenient to use, good in use effect and the like.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims

1. The power unit test cabinet comprises a cabinet body supporting frame (1) and is characterized in that a detection area panel (2) is arranged on the upper portion of the cabinet body supporting frame (1), a trigger (4) is embedded and arranged on the left portion of the detection area panel (2), a detection oscilloscope (3) is embedded and arranged on the right side of the trigger (4), and a detection area baffle (10) is arranged on the lower side of the detection area panel (2);

the intelligent monitoring system comprises a detection area baffle (10), an operation area panel (5) is arranged in the middle of a cabinet body supporting frame (1), a voltmeter (8) is embedded and arranged at the left end of the upper part of the operation area panel (5), an ammeter (9) is arranged on the right side of the voltmeter (8), an operation button (6) is arranged on the right side of the ammeter (9), an oscilloscope binding post (11) is embedded and arranged at the left end of the lower part of the operation area panel (5), the rear end of the oscilloscope binding post (11) is connected with an oscilloscope (3), a power unit binding post (12) is arranged at the lower side of the oscilloscope binding post (11), the rear end of the power unit binding post (12) is connected with a load incandescent lamp (14), an air switch (24) is arranged on the right sides of the oscilloscope power unit binding post (12) and the binding post (11), and an operation area baffle (20) is arranged at the lower side of the operation area panel (5);

the intelligent cabinet temperature control device is characterized in that a load area panel (13) is arranged at the left end of the lower part of the cabinet body supporting frame (1), five load incandescent lamps (14) are arranged in the middle of the load area panel (13), a bearing channel steel (16) is arranged at the right end of the lower part of the cabinet body supporting frame (1), and an autotransformer (15) is arranged at the upper end of the bearing channel steel (16).

2. The power unit test cabinet according to claim 1, characterized in that a display lamp (7) is mounted on the upper side of the operating button (6) for displaying the operating state of the operating button (6).

3. The power unit test cabinet according to claim 1, wherein a frame opening is formed in the front end of the cabinet body supporting frame (1), a cabinet door (18) is connected to the front end of the cabinet body supporting frame (1) through hinge connection, and the frame opening can be closed and opened through the cabinet door (18).

4. A power unit testing cabinet according to claim 3, characterized in that the outside screw of the cabinet door (18) is connected with a cabinet door handle (17).

5. The power unit test cabinet according to claim 1, wherein a power supply area panel (19) is welded to the rear end of the operation area panel (5) and the upper surface of the operation area baffle (20).

6. The power unit test cabinet according to claim 5, characterized in that a circuit breaker (21) is mounted on the upper part of the power zone panel (19).

7. The power unit test cabinet according to claim 6, wherein a rectifier bridge (22) is mounted at the lower left end of the power section panel (19).

8. The power unit test cabinet according to claim 7, wherein a contactor (23) is mounted at a lower right end of the power zone panel (19).

9. The power unit test cabinet according to claim 5, wherein the upper surface of the carrying channel (16) is provided with an autotransformer (15) by means of a screw connection.

10. The power unit test cabinet according to claim 9, wherein the detection area panel (2) and the upper part of the cabinet body supporting frame (1), the detection area baffle (10) and the lower side of the detection area panel (2), the middle part of the operation area panel (5) and the cabinet body supporting frame (1), the load area panel (13) and the lower left end of the cabinet body supporting frame (1), and the bearing channel steel (16) and the lower right end of the cabinet body supporting frame (1) are all connected in a welding mode.