A circuit breaker operating acoustic wave acquisition device

Abstract

This application discloses a circuit breaker operating acoustic wave acquisition device and analysis method, relating to the field of circuit breaker detection technology. The circuit breaker operating acoustic wave acquisition device includes: a first frame and a second frame connected together; a first support shaft connected to both ends of the first frame and a second support shaft connected to both ends of the second frame, with rollers rotatably connected to the surfaces of both the first and second support shafts; and a mounting frame snapped onto the first and second frames. A fixing plate is fixedly installed at the lower end of the mounting frame on the first frame, and a fixing plate is also fixedly installed on one side of the mounting frame on the second frame. Both fixing plates are fixedly connected to patches via detection springs, and the patches are used to adhere to the surface of the circuit breaker. This device can calculate the degree of tensile deformation of the detection spring through current changes, thereby determining the amplitude of the circuit breaker vibration, i.e., the acoustic wave characteristics.

Description

Technical Field

[0001] This application relates to the field of circuit breaker testing technology, and in particular to a circuit breaker operating acoustic wave acquisition device and analysis method. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their application range. When a circuit breaker is in operation, the passage of current causes it to vibrate and emit sound waves. Technicians can use these sound waves to determine whether the circuit breaker is operating normally.

[0003] In the existing technology, the sound waves of circuit breakers can only be collected using general-purpose sound wave acquisition devices. The collected sound wave data is also mixed with sound wave data generated by other surrounding components. Since the circuit breaker itself is a device with multiple switching devices installed together, the sound waves collected contain many influencing factors, making the subsequent analysis process very complicated. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a circuit breaker operating acoustic wave acquisition device and analysis method to solve the technical problem that the existing acoustic wave acquisition methods contain many influencing factors, which leads to a more complex subsequent analysis process.

[0005] To achieve the above technical objectives, this application provides a circuit breaker operating acoustic wave acquisition device, comprising:

[0006] A first frame and a second frame are connected together, and a connecting rod is provided at the middle section of the first frame and the second frame. The first frame is rotatably connected to the second frame through the connecting rod.

[0007] A first support shaft is connected to both ends of the first frame and a second support shaft is connected to both ends of the second frame. Rollers are rotatably connected to the surfaces of both the first support shaft and the second support shaft.

[0008] The mounting frame is snapped onto the first frame and the second frame. A fixing plate is fixedly installed at the lower end of the mounting frame on the first frame, and a fixing plate is also fixedly installed on one side of the mounting frame on the second frame. Both fixing plates are fixedly connected to patches by detection springs. The patches are used to stick to the surface of the circuit breaker.

[0009] Furthermore, both sides of the first frame and the second frame are provided with toothed grooves;

[0010] Both the first frame and the second frame have tracks installed on their tops, forming mounting grooves;

[0011] The mounting frame snaps onto the toothed groove and slides along the surface of the track.

[0012] Furthermore, each of the rollers has a magnetic ring on its surface.

[0013] Furthermore, auxiliary shafts are provided on both sides of the first support shaft and the second support shaft;

[0014] Auxiliary wheels are rotatably mounted on the end surfaces of both auxiliary shafts.

[0015] Furthermore, the mounting frame is fitted onto the surface of the first frame;

[0016] The mounting frame has symmetrical fixing blocks arranged on its inner wall;

[0017] A rotating shaft is rotatably connected to each of the fixed blocks on both sides;

[0018] The two rotating shafts are fitted against the inner wall of the mounting groove;

[0019] The end of the rotating shaft away from the track is fixedly connected to the upper wall of the fixed block via a connecting spring;

[0020] A toothed block is provided below the fixing block;

[0021] The tooth block engages with the tooth groove.

[0022] Furthermore, a second hole is provided at the connection between the first frame and the first support shaft;

[0023] Multiple first holes are sequentially opened on the side of the first support shaft;

[0024] A first U-shaped retaining shaft connects the second hole to the first hole;

[0025] The two ends of the first U-shaped clip are respectively inserted into the second hole and the first hole.

[0026] Furthermore, a fourth hole is provided at both ends of the second frame;

[0027] Multiple third holes are sequentially opened inside the second support shaft;

[0028] A second U-shaped retaining shaft is connected between the fourth hole and the third hole;

[0029] The two ends of the second U-shaped clip are respectively inserted into the fourth hole and the third hole.

[0030] Furthermore, the length of the first frame is longer than the length of the second frame;

[0031] The length of the first support shaft is longer than the length of the second support shaft;

[0032] A handle is fixedly connected to the end of the connecting rod;

[0033] The connecting rod is fixedly connected to the second frame, and the second frame is rotatably sleeved on the connecting rod.

[0034] Furthermore, each of the detection springs is energized, and the detection springs are connected in parallel with each other;

[0035] At least one mounting frame is installed on the first frame and the second frame.

[0036] This application also discloses a method for analyzing the acoustic waves of a circuit breaker during operation, including the following steps:

[0037] Step S1: Place the circuit breaker working sound wave acquisition device on the outside of the circuit breaker. Adjust the angle of the first support shaft and the second support shaft according to the needs of working sound wave acquisition, and attract the roller to the outermost part that needs to be removed.

[0038] Step S2: Place the second frame and the mounting frame installed on the first frame near the circuit breaker to detect that the spring is under tension, and adhere the patch to the corresponding surface of the circuit breaker.

[0039] Step S3: Collect the operating acoustic waves of the circuit breaker using the method of controlling variables, and obtain multiple data points;

[0040] Step S4: Use the subtraction method to calculate and analyze the multiple collected data to obtain the working sound wave of the target circuit breaker.

[0041] As can be seen from the above technical solutions, the circuit breaker operating acoustic wave acquisition device and analysis method designed in this application have the following beneficial effects:

[0042] 1. This invention collects the operating sound waves of a circuit breaker by controlling variables and obtains multiple data points. It then uses a subtraction method to calculate and analyze the multiple data points to obtain the operating sound waves of the target circuit breaker. This invention can obtain the sound waves of a certain switching device in a single circuit breaker under operating conditions.

[0043] 2. The patch on the second frame collects the sound waves horizontal to the circuit breaker, while the patch on the first frame collects the sound waves perpendicular to the circuit breaker. The deformed detection spring will change its own resistance connected to the circuit, thereby causing a change in current. The degree of stretching deformation of the detection spring can be calculated through the change in current, thus knowing the amplitude of the circuit breaker vibration, i.e., the sound wave situation.

[0044] 3. The first frame can rotate relative to the second frame, which in turn drives the connected rollers and auxiliary wheels to move. The rolling direction of the rollers and auxiliary wheels is limited, and the rollers with intersecting rolling directions can ensure the stability of the device during use. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the structure of a circuit breaker working acoustic wave acquisition device provided in this application;

[0047] Figure 2 This is a top view schematic diagram of a circuit breaker working acoustic wave acquisition device provided in this application;

[0048] Figure 3 This is a bottom view of the acoustic wave acquisition device for circuit breaker operation provided in this application.

[0049] Figure 4 This is a schematic diagram of the installation structure of the first frame and the first support shaft of the circuit breaker working acoustic wave acquisition device provided in this application;

[0050] Figure 5 This is a schematic diagram of the installation structure of the second frame and the second support shaft of a circuit breaker working acoustic wave acquisition device provided in this application;

[0051] Figure 6 This is a schematic diagram of the mounting frame of the circuit breaker working acoustic wave acquisition device provided in this application, which is mounted on a track.

[0052] Figure 7 A flowchart of a circuit breaker operation acoustic wave analysis method provided in this application;

[0053] In the diagram: 1. First frame; 2. Connecting rod; 3. Handle; 4. Gear groove; 5. Second frame; 6. Track; 7. First support shaft; 8. Second support shaft; 9. Auxiliary shaft; 10. Mounting frame; 11. Detection spring; 12. Patch; 13. Roller; 14. Auxiliary wheel; 15. Fixing plate; 16. Second hole; 17. First U-shaped retaining shaft; 18. First hole; 19. Magnetic ring; 20. Second U-shaped retaining shaft; 21. Third hole; 22. Fourth hole; 23. Gear block; 24. Connecting spring; 25. Rotating shaft; 26. Fixing block. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the embodiments of this application.

[0055] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0057] This application discloses a circuit breaker operating acoustic wave acquisition device.

[0058] Reference Figures 1-6 ,include:

[0059] A first frame 1 and a second frame 5 are connected together. A connecting rod 2 is provided at the middle section of the first frame 1 and the second frame 5. The first frame 1 is rotatably connected to the second frame 5 through the connecting rod 2. A first support shaft 7 is connected to both ends of the first frame 1 and a second support shaft 8 is connected to both ends of the second frame 5. Rollers 13 are rotatably connected to the surfaces of the first support shaft 7 and the second support shaft 8. A mounting frame 10 is snapped onto the first frame 1 and the second frame 5. A fixing plate 15 is fixedly installed at the lower end of the mounting frame 10 on the first frame 1 and a fixing plate 15 is also fixedly installed on one side of the mounting frame 10 on the second frame 5. Both fixing plates 15 are fixedly connected to patches 12 through detection springs 11. The patches 12 are used to stick to the surface of the circuit breaker.

[0060] The first frame 1 is longer than the second frame 5, and the first support shaft 7 is longer than the second support shaft 8. A handle 3 is fixedly connected to the end of the connecting rod 2. The connecting rod 2 is fixedly connected to the second frame 5, and the second frame 5 is rotatably sleeved on the connecting rod 2. There is a height difference between the first frame 1 and the second frame 5, thus providing sufficient space for placing a circuit breaker. The user supports the device using the handle 3 for data acquisition. Each detection spring 11 is energized, and the detection springs 11 are connected in parallel. At least one mounting frame 10 is installed on the first frame 1 and the second frame 5.

[0061] Both sides of the first frame 1 and the second frame 5 are provided with toothed grooves 4, and both the first frame 1 and the second frame 5 are equipped with rails 6 on their tops, forming mounting grooves. The mounting frame 10 is snapped into the toothed grooves 4 and slides along the surface of the rails 6. The mounting frame 10 achieves a fixed effect by snapping into the toothed grooves 4, and the mounting frame 10 can be installed and fixed at different positions within the range of the rails 6.

[0062] The mounting frame 10 is fitted onto the surface of the first frame 1. Fixing blocks 26 are symmetrically arranged on the inner wall of the mounting frame 10. Rotating shafts 25 are rotatably connected to both fixing blocks 26. The two rotating shafts 25 are fitted against the inner wall of the mounting groove. The end of the rotating shaft 25 away from the track 6 is fixedly connected to the upper wall of the fixing block 26 via a connecting spring 24. A toothed block 23 is provided below the fixing block 26, engaging with the toothed groove 4. The mounting frame 10 is fitted onto the surface of either the first frame 1 or the second frame 5. The rotating shaft 25 inside the mounting frame 10 is fitted against the inner wall of the track 6 under the elastic force of the connecting spring 24. The mounting frame 10 and the rotating shaft 25 cooperate to clamp and fix the track 6. Pulling the mounting frame 10 outwards counteracts the elastic force of the connecting spring 24, disengaging the toothed block 23 from the toothed groove 4. The rotating shaft 25 rotates and disengages from the inner surface of the track 6, allowing the mounting frame 10 and the connected detection spring 11 to move relative to the track 6.

[0063] Auxiliary shafts 9 are provided on both sides of the first support shaft 7 and the second support shaft 8. Auxiliary wheels 14 are rotatably mounted on the end surfaces of both auxiliary shafts 9. Each roller 13 has a magnetic ring 19 on its surface. The auxiliary shafts 9 on both sides, rotatably connected to the auxiliary wheels 14, ensure greater stability during movement. The magnetic rings 19 on the rollers 13 can adhere to metal surfaces, allowing the rollers 13 to roll and move the device. The magnetic rings 19 adhere to the metal surfaces, ensuring the entire device remains relatively stationary with respect to the outer casing during data acquisition and movement. The magnetic strength of the magnetic rings 19 does not affect the normal operation of the circuit breaker.

[0064] A second hole 16 is provided at the connection between the first frame 1 and the first support shaft 7. Multiple first holes 18 are sequentially provided on the side of the first support shaft 7. A first U-shaped retaining shaft 17 connects the second holes 16 and the first holes 18, with both ends of the first U-shaped retaining shaft 17 inserted into the second holes 16 and the first holes 18 respectively. The first U-shaped retaining shaft 17 serves to fix the relative angle between the first frame 1 and the first support shaft 7. By inserting one end of the first U-shaped retaining shaft 17 into the second hole 16 and the other end into different first holes 18, different included angles can be formed between the first frame 1 and the first support shaft 7.

[0065] The second frame 5 has fourth holes 22 at both ends, and the second support shaft 8 has multiple third holes 21 sequentially formed inside. A second U-shaped retaining shaft 20 connects the fourth holes 22 and the third holes 21, with both ends of the second U-shaped retaining shaft 20 inserted into the fourth holes 22 and the third holes 21, respectively. The angle between the second frame 5 and the second support shaft 8 can be adjusted by using the second U-shaped retaining shaft 20. The angle between the second frame 5 and the second support shaft 8 can be determined by engaging one end of the second U-shaped retaining shaft 20 with different third holes 21.

[0066] Reference Figures 1 to 7 This application also discloses a method for analyzing the acoustic waves of a circuit breaker during operation, comprising the following steps:

[0067] Step S1: Place the circuit breaker working sound wave acquisition device on the outside of the circuit breaker. Adjust the angle of the first support shaft 7 and the second support shaft 8 according to the needs of working sound wave acquisition, and attract the roller 13 to the outermost part that needs to be removed.

[0068] Step S2: Place the mounting frame 10 installed on the second frame 5 and the first frame 1 close to the circuit breaker to detect that the spring 11 is in a stretched state, and adhere the patch 12 to the corresponding surface of the circuit breaker.

[0069] Step S3: Collect the operating acoustic waves of the circuit breaker using the method of controlling variables, and obtain multiple data points;

[0070] Step S4: Use the subtraction method to calculate and analyze the multiple collected data to obtain the working sound wave of the target circuit breaker.

[0071] The principle of the analysis method is as follows:

[0072] When collecting acoustic waves from the circuit breaker, the device is placed over the circuit breaker. First, the mounting frame 10 on the second frame 5 is brought close to the circuit breaker. The user pulls the mounting frame 10 upwards to rotate the shaft 25, causing it to rotate out of the track 6. The toothed block 23 disengages from the toothed groove 4, thus changing the position of the mounting frame 10 relative to the second frame 5. Finally, the patch 12 is glued to the side of the circuit breaker. The patch 12 uses a reusable adhesive surface. The user also operates the mounting frame 10 on the first frame 1 and glues the patch 12 to the front of the circuit breaker. At this time, the position of the mounting frame 10 causes the detection spring 11 to be in a stretched state, and then the working acoustic waves of the circuit breaker are collected.

[0073] The sound waves generated by the circuit breaker during operation are manifested as vibrations. The patch 12 is attached to the surface of the circuit breaker and moves with the vibration of the circuit breaker. The patch 12 on the second frame 5 collects sound waves horizontal to the circuit breaker, while the patch 12 on the first frame 1 collects sound waves perpendicular to the circuit breaker. The movement amplitude of the patch 12 is reflected by the extension and contraction of the detection spring 11. Each detection spring 11 is connected to the circuit in parallel. The stretched detection spring 11 will deform, and the deformed detection spring 11 will change its resistance connected to the circuit, thereby causing a change in current. The degree of stretching and deformation of the detection spring 11 can be calculated from the change in current, thus revealing the amplitude of the circuit breaker vibration.

[0074] Two patches 12 collect the sound waves generated by the circuit breaker from different directions. The results collected by the two patches 12 can be integrated to comprehensively analyze the sound waves of the circuit breaker. At least one mounting frame 10 can be installed on the first frame 1 and the second frame 5. Different mounting frames 10 are connected to different circuit breaker surfaces, and the sound waves of the circuit breaker are collected by controlling variables.

[0075] For example: When circuit breaker A is closed and circuit breaker B is closed, acoustic waves are simultaneously collected from both circuit breakers A and B to obtain data X1; when circuit breaker A is closed and circuit breaker B is closed, acoustic waves are simultaneously collected from both circuit breakers A and B to obtain data X2; data X2 is subtracted from data X1 to obtain data X3, which is the working acoustic wave of circuit breaker A when circuit breaker B is also working.

[0076] It is known that the circuit breaker is installed inside a chassis, and the chassis is usually made of metal. When the magnetic ring 19 on the surface of the roller 13 is attracted to the inner wall of the chassis, the device and the chassis are in a relatively stationary state. The data detected at this time excludes the vibration of the chassis itself. Conversely, when the magnetic ring 19 is attracted to the metal surface outside the chassis, the data detected includes the vibration of the chassis itself. The angle between the second support shaft 8 and the second frame 5 is adjustable, and the angle between the first support shaft 7 and the first frame 1 is adjustable. Appropriate angle adjustments can be made according to the needs of data acquisition. The first frame 1 can rotate relative to the second frame 5, which simultaneously drives the connected roller 13 and auxiliary wheel 14 to move. The rolling direction of the roller 13 and auxiliary wheel 14 is limited. The rollers 13 with staggered rolling directions can ensure the stability of the device during use.

[0077] The above provides a detailed description of the circuit breaker operating acoustic wave acquisition device and analysis method provided in this application. For those skilled in the art, based on the ideas of the embodiments of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A circuit breaker operating acoustic wave acquisition device, characterized in that, include: A first frame (1) and a second frame (5) are connected together. A connecting rod (2) is provided at the middle section of the first frame (1) and the second frame (5). The first frame (1) is rotatably connected to the second frame (5) through the connecting rod (2). A first support shaft (7) is connected to both ends of the first frame (1) and a second support shaft (8) is connected to both ends of the second frame (5). Rollers (13) are rotatably connected to the surfaces of the first support shaft (7) and the second support shaft (8). And a mounting frame (10) snapped onto the first frame (1) and the second frame (5). A fixing plate (15) is fixedly installed at the lower end of the mounting frame (10) on the first frame (1). A fixing plate (15) is also fixedly installed on one side of the mounting frame (10) on the second frame (5). Both fixing plates (15) are fixedly connected to patches (12) by detection springs (11). The patches (12) are used to stick together with the surface of the circuit breaker. Both sides of the first frame (1) and the second frame (5) are provided with toothed grooves (4); Both the first frame (1) and the second frame (5) are equipped with rails (6) and have mounting grooves. The mounting frame (10) is snapped onto the toothed groove (4) and slides along the surface of the track (6); Each of the rollers (13) has a magnetic ring (19) on its surface. Auxiliary shafts (9) are provided on both sides of the first support shaft (7) and the second support shaft (8); Auxiliary wheels (14) are rotatably mounted on the end surfaces of both auxiliary shafts (9). The mounting frame (10) is fitted onto the surface of the first frame (1); Fixing blocks (26) are symmetrically arranged on the inner wall of the mounting frame (10). A rotating shaft (25) is rotatably connected to each of the two fixing blocks (26); The two rotating shafts (25) are fitted against the inner wall of the mounting groove; The end of the rotating shaft (25) away from the track (6) is fixedly connected to the upper wall of the fixing block (26) via a connecting spring (24); A toothed block (23) is provided below the fixing block (26); The tooth block (23) engages with the tooth groove (4); The magnetic ring (19) is adsorbed onto the metal surface, allowing the entire device to remain relatively stationary with respect to the outer shell during collection and movement.

2. The circuit breaker operating acoustic wave acquisition device according to claim 1, characterized in that, A second hole (16) is provided at the connection between the first frame (1) and the first support shaft (7); The first support shaft (7) has a plurality of first holes (18) sequentially opened on its side. A first U-shaped retaining shaft (17) is connected between the second hole (16) and the first hole (18). The two ends of the first U-shaped clip (17) are respectively inserted into the second hole (16) and the first hole (18).

3. The circuit breaker operating acoustic wave acquisition device according to claim 1, characterized in that, The second frame (5) has a fourth hole (22) at both ends; Multiple third holes (21) are sequentially opened inside the second support shaft (8); A second U-shaped retaining shaft (20) is connected between the fourth hole (22) and the third hole (21). The two ends of the second U-shaped clip (20) are inserted into the fourth hole (22) and the third hole (21) respectively.

4. The circuit breaker operating acoustic wave acquisition device according to claim 1, characterized in that, The length of the first frame (1) is longer than the length of the second frame (5); The length of the first support shaft (7) is longer than the length of the second support shaft (8); The end of the connecting rod (2) is fixedly connected to a handle (3); The connecting rod (2) is fixedly connected to the second frame (5), and the second frame (5) is rotatably sleeved on the connecting rod (2).

5. The circuit breaker operating acoustic wave acquisition device according to claim 1, characterized in that, Each of the detection springs (11) is energized, and the detection springs (11) are connected in parallel with each other; At least one mounting frame (10) is installed on the first frame (1) and the second frame (5).

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