Testing device for testing sound level of transformer

Abstract

The utility model discloses a testing device for testing the sound level of a transformer. The testing device for testing the sound level of the transformer comprises an automatic guide vehicle which is arranged on a track laid in a preset area of the transformer; the first end of the lifting rod is detachably connected to the automatic guide vehicle; the sound level meter is detachably connected to the second end, opposite to the first end, of the lifting rod, and the sound level meter collects noise signals of the transformer; the remote control unit is in wireless connection with the automatic guide vehicle, and the remote control unit controls the automatic guide vehicle to start and stop on the track; and the main control unit is in wireless connection with the sound level meter, the main control unit controls acquisition starting operation and acquisition ending operation of the sound level meter, and the main control unit receives the acquired noise signals. According to the testing device, a tester can complete the sound level measurement of the transformer without entering a live-line area, and the safety risk is reduced to a great extent.

Description

Technical Field

[0001] The utility model relates to a testing device for testing the sound level of a transformer (especially a large transformer). Background Art

[0002] When conducting transformer sound level tests, the national standard has strict regulations on the distance between the transformer to be tested and the sound level meter, the height of the target detection point of the sound level meter, etc. Traditionally, when the transformer is ready for testing, the operator usually uses an insulating rod to lift the sound level meter to the height specified by the standard, maintains a distance from the transformer outline, walks along the transformer outline, and reads the test data from the sound level meter after completing the test. When conducting a transformer sound level measurement test, the tester needs to move around the transformer in a circle to measure the sound level. In addition to the background noise measurement, the transformer is still energized. The tester works in a high-voltage area, which poses a great safety hazard.

[0003] The above traditional operation is that the operator holds a sound level meter to test in the area near the transformer. However, due to the large size and high voltage of the transformer, there are the following problems: the operator's working area is close to the high-voltage live body and there is currently no effective protection method, which poses a high safety risk; the operator's handheld sound level meter is prone to shaking while walking, and it is impossible to accurately control the distance and height between the sound level meter and the transformer, resulting in a large dispersion of test results; and the labor intensity of holding a sound level meter to test is high. Most transformer testing laboratories still send test personnel directly into the live area to measure the transformer sound level. Their safety protection measures are only to arrange a circle of protective fences around the transformer to separate the test personnel from the transformer. This safety protection measure fails to fundamentally solve the problem that test personnel need to enter the live area to work, and still has a large safety hazard. Utility Model Content

[0004] In view of this, the utility model proposes a testing device for sound level testing of a transformer to solve part or all of the above problems.

[0005] According to an embodiment of the utility model, a test device for sound level testing of a transformer is provided, characterized in that the test device comprises: an automatic guided vehicle, the automatic guided vehicle is placed on a track laid in a predetermined area of ​​the transformer; a lifting rod, a first end of the lifting rod is detachably connected to the automatic guided vehicle; a sound level meter, the sound level meter is detachably connected to a second end of the lifting rod opposite to the first end, the sound level meter collects a noise signal of the transformer; a remote control unit, wirelessly connected to the automatic guided vehicle, and the remote control unit controls the start and stop of the automatic guided vehicle on the track; and a main control unit, wirelessly connected to the sound level meter, the main control unit controls the collection start operation and the collection end operation of the sound level meter, and the main control unit receives the collected noise signal.

[0006] Through the above remote operation, testers can complete the transformer sound level measurement without entering the live area, greatly reducing safety risks.

[0007] Preferably, the testing device further comprises a transceiver, which receives a control signal from the remote control unit for controlling the start and stop of the automatic guided vehicle on the track.

[0008] Effect

[0009] Preferably, the main control unit comprises a processing module for performing at least one of the following operations on the collected noise signal: recording, displaying, analyzing, and archiving.

[0010] Preferably, the track includes a plurality of landmarks, and the remote control unit controls the automatic guided vehicle to move to one of the plurality of landmarks arranged on the track, wherein the landmark corresponds to a test point of the transformer.

[0011] Preferably, the track is a magnetic strip track on a contour line obtained by connecting the projection points of all the test points laid on the ground, the remote control unit controls the automatic guided vehicle to sequentially pass through each of a plurality of landmarks set on the magnetic strip track, and the sound level meter collects noise signals at the test points of the transformer.

[0012] Preferably, the automatic guided vehicle automatically moves along the magnetic track to sequentially pass through each of the plurality of landmarks based on a start-up instruction from the remote control unit.

[0013] Preferably, the automated guided vehicle further comprises an obstacle detector for detecting obstacles on the driving path of the automated guided vehicle that hinder the driving of the automated guided vehicle.

[0014] Preferably, the main control unit is a laptop or a desktop computer.

[0015] Preferably, the testing device further comprises a sound level meter height display, which is disposed on the automatic guided vehicle and displays the height of the sound level meter.

[0016] It can be seen from the above scheme that testers can complete the transformer sound level measurement without entering the live area, greatly reducing safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will be more aware of the above and other features and advantages of the present invention. In the accompanying drawings:

[0018] Figure 1 A schematic diagram of a testing device for sound level testing of a transformer according to the utility model is shown.

[0019] Figure 2 The schematic diagram shows a test device for sound level test of a transformer according to the utility model in a test environment.

[0020] The reference numerals are as follows:

[0021] 10. Test Device

[0022] 101, 201 sound level meter

[0023] 102 lifting rod

[0024] 103 Sound Level Meter Height Display

[0025] 104 transceiver

[0026] 105 Start / Stop Button

[0027] 106 Reset button

[0028] 107 Emergency stop button

[0029] 108 Power button

[0030] 109 Obstacle Detector

[0031] 110 Wheels

[0032] 111 Touch screen

[0033] 112, 212 tracks

[0034] 113 Landmarks

[0035] 114, 214 master control unit

[0036] 115, 215 remote control unit

[0037] 210 Transformer

[0038] 116,220 Automated Guided Vehicle DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail in the following embodiments.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0042] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0043] Figure 1 FIG. 1 is a schematic diagram of a test device for sound level testing of a transformer according to the utility model. Figure 1As shown, the test device 10 includes: an automatic guided vehicle 116, which is placed on a track 112 laid in a predetermined area of ​​the transformer; a lifting rod 102, a first end of the lifting rod (for example, the bottom end of the lifting rod) can be detachably connected to the automatic guided vehicle 116; a sound level meter 101, the sound level meter can be detachably connected to the second end of the lifting rod opposite to the first end (for example, the top end of the lifting rod), and the sound level meter collects the noise signal of the transformer; a remote control unit 115, which is wirelessly connected to the automatic guided vehicle, and the remote control unit controls the start and stop of the automatic guided vehicle on the track; and a main control unit 114, which is wirelessly connected to the sound level meter, the main control unit 114 controls the collection start operation (for example, in the collection start operation, the sound level meter collects the noise signal of the transformer) and the collection end operation (for example, in the collection end operation, the sound level meter stops collecting the noise signal of the transformer), and the main control unit receives the collected noise signal wirelessly transmitted from the sound level meter. In addition to the above components, the test device 10 may also include: a sound level meter height display 103, which is arranged on the automatic guided vehicle, and the sound level meter height display displays the height of the sound level meter; a transceiver 104, which is arranged on the automatic guided vehicle, and the transceiver can be implemented as a remote control antenna, and the transceiver receives a control signal of a remote control unit for controlling the start and stop of the automatic guided vehicle on the track; a start-stop button 105, which is arranged on the automatic guided vehicle, and is used to control the start and stop of an automatic guided vehicle 116 placed on a track 112 laid in a predetermined area of ​​the transformer according to a start-stop signal from a remote control unit 115 received via the transceiver 104 or according to a manual operation of the start-stop button 105 by a user; a power button 108, which is arranged on the automatic guided vehicle, and is used to turn on the power of the automatic guided vehicle; an emergency stop button 107, which is arranged on the automatic guided vehicle On the vehicle, it is used to control the emergency stop of an automatic guided vehicle 116 placed on a track 112 laid in a predetermined area of ​​the transformer according to an emergency stop signal from a remote control unit 115 received via a transceiver 104, or an alarm signal from an obstacle detector 109 described below, or according to a user's manual operation of an emergency stop button 107; an obstacle detector 109 is arranged on the automatic guided vehicle, and the obstacle detector is configured to detect obstacles on the driving path of the automatic guided vehicle that hinder the driving of the automatic guided vehicle, and can transmit an alarm signal indicating the existence of an obstacle to the remote control unit 115, for example, the obstacle detector can be implemented by an obstacle avoidance laser radar; wheels 110 are arranged at the bottom of the automatic guided vehicle, for example, the wheels can be universal wheels; a touch screen 111 is used to display various parameters of the measurement system and receive control instructions input by the user.

[0044] Figure 2The schematic diagram of the test device for sound level test of transformer according to the utility model in the test environment is shown. During the sound level test of the transformer, first, the tester can lay the track 212 on the ground according to the measurement contour line of the transformer 210 to be tested (for example, the track 212 can be a magnetic track on the contour line obtained by connecting the projection points on the ground of all the test points of the power transformer to be tested). Next, the tester can adjust the lifting rod according to the height of the reference emission surface of the transformer 210 to be tested (for example, see Figure 1 ) until the sound level meter height display (see, for example, Figure 1 The height value displayed by the sound level meter height display 103 shown in FIG. 1 is consistent with the required value. Then, the test personnel place the automatic guided vehicle 220 equipped with a lifting rod and a sound level meter 201 on the laid track 212. In addition, according to actual needs, multiple landmarks (for example, Figure 1 The landmark 113 shown in FIG. 1 corresponds to the test point of the transformer 210 (for example, the landmark is the projection point of the test point on the ground), so as to meet the requirements of the number of measurement points and the measurement method. Then, the tester operates the remote control unit 215, for example, via a transceiver (for example, Figure 1 The transceiver 104 shown in the figure receives the start and stop signals for the automatic guided vehicle 220 from the remote control unit 215. Then, the test personnel wirelessly connect the sound level meter 201 and the main control unit 214 (for example, a laptop or desktop computer to implement the main control unit) through customized software. After the wireless connection is successfully established, the sound level meter display screen will automatically stream to the screen of the main control unit 214, and the main control unit 214 can control the acquisition start operation and the acquisition end operation of the sound level meter 201. Next, after the transformer 210 is excited, the test area is now a live area, and the test personnel operate the remote control unit 215 to remotely control the automatic guided vehicle 220 (for example, through remote control such as Figure 1The start / stop button 105 shown in the figure is pressed. At this time, the automatic guided vehicle 220 will automatically travel along the laid track 212 and pass through each landmark in sequence, so that the sound level meter 201 collects the noise of the transformer 210 at the test point, and the main control unit 214 receives the collected noise. In addition, the main control unit 214 may include a module for performing at least one of the following operations on the collected noise signal: recording, displaying, analyzing, and archiving. The test personnel can operate the main control unit 214 to remotely control the sound level meter 201 (for example, after the automatic guided vehicle 220 automatically travels along the laid track 212 and passes through each landmark in sequence, or after the automatic guided vehicle 220 automatically travels along the laid track 212 and passes through a predetermined number of landmarks, the test personnel can operate the main control unit 214 to remotely control the sound level meter 201 to end the collection task), thereby completing the sound level measurement of the transformer 210. In addition, the test personnel can also operate the remote control unit 215 to remotely control the lifting rod (for example, remotely control the lifting rod such as Figure 1 The test personnel can also operate the remote control unit 215 in response to the alarm signal from the obstacle detector to remotely control the automatic guided vehicle 220 (for example, by remotely controlling the automatic guided vehicle 220). Figure 1 Alternatively, the automatic guided vehicle 220 may also automatically trigger the emergency stop button 107 in response to an alarm signal from an obstacle detector.

[0045] It can be seen from the above scheme that a test device for transformer sound level testing is provided. According to the test device for transformer sound level testing of the utility model, the following technical effects can be achieved: the test personnel can complete the transformer sound level measurement without entering the live area, which greatly reduces the safety risk.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A test device (10) for testing the sound level of a transformer, characterized in that: The testing device comprises: An automatic guided vehicle (116, 220), the automatic guided vehicle being placed on a track (112, 212) laid in a predetermined area of ​​the transformer; A lifting rod (102), a first end of which is detachably connected to the automatic guided vehicle; A sound level meter (101, 201), the sound level meter being detachably connected to a second end of the lifting rod opposite to the first end, the sound level meter collecting a noise signal of the transformer (210); A remote control unit (115, 215) is wirelessly connected to the automatic guided vehicle, and the remote control unit controls the start and stop of the automatic guided vehicle on the track; and A main control unit (114, 214) is wirelessly connected to the sound level meter, the main control unit controls the collection start operation and the collection end operation of the sound level meter, and the main control unit receives the noise signal collected by the sound level meter.

2. The test device for sound level testing of a transformer according to claim 1, characterized in that: The testing device further comprises a transceiver (104) for receiving a control signal from the remote control unit for controlling the start and stop of the automatic guided vehicle on the track.

3. The test device for sound level testing of a transformer according to claim 1 or 2, characterized in that: The main control unit includes a processing module for performing at least one of the following operations on the collected noise signal: recording, displaying, analyzing, and archiving.

4. The test device for sound level testing of a transformer according to claim 1 or 2, characterized in that: The track includes a plurality of landmarks (113), and the remote control unit controls the automatic guided vehicle to move to one of the plurality of landmarks (113) arranged on the track, wherein the landmark corresponds to a test point of the transformer.

5. The test device for transformer sound level testing according to claim 4, characterized in that: The track is a magnetic stripe track, wherein a contour line formed by connecting the test points of the transformer is projected on the ground, and the magnetic stripe track is laid according to the projection of the contour line on the ground, the remote control unit controls the automatic guided vehicle to sequentially pass through each of a plurality of landmarks set on the magnetic stripe track, and the sound level meter collects noise signals at the test points of the transformer.

6. The testing device for transformer sound level testing according to claim 5, characterized in that: The automated guided vehicle moves along the magnetic track to sequentially pass through each of the plurality of landmarks based on an activation instruction of the remote control unit.

7. The testing device for sound level testing of a transformer according to claim 4, characterized in that: The automatic guided vehicle further comprises an obstacle detector (109) for detecting obstacles on the driving path of the automatic guided vehicle that hinder the driving of the automatic guided vehicle.

8. The test device for sound level testing of a transformer according to claim 1 or 2, characterized in that: The main control unit is a notebook computer or a desktop computer.

9. The test device for sound level testing of a transformer according to claim 1 or 2, characterized in that: The testing device further comprises a sound level meter height display (103), which is arranged on the automatic guided vehicle and displays the height of the sound level meter.

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