Device and method for detecting mechanical performance of circuit breaker

Abstract

The invention relates to a circuit breaker mechanical property detection device and a detection method thereof. The circuit breaker mechanical performance detection device comprises a plugging module electrically connected with an aviation plug in the circuit breaker, the aviation plug is provided with a first conductive column and / or a first conductive shaft sleeve, the plugging module is provided with a butt joint assembly, the butt joint assembly comprises a second conductive column and a sleeve, and the second conductive column is movably arranged in the sleeve in the axial direction of the sleeve. When the aviation plug is provided with the first conductive column, the second conductive column is used for abutting against the first conductive column in the aviation plug and guiding the first conductive column to be inserted into the sleeve, and when the aviation plug is provided with the first conductive shaft sleeve, the second conductive column is inserted into the first conductive shaft sleeve. In other words, whether the aviation plug is provided with the first conductive column or the first conductive shaft sleeve or both, the plug module can be correspondingly connected with the aviation plug through the sleeve and the second conductive column in sliding connection with the sleeve, so that the plug module can be matched with aviation plugs of various circuit breakers.

Description

Technical Field

[0001] This application relates to the technical field of circuit breaker mechanical performance detection, and particularly to a circuit breaker mechanical performance detection device and its detection method. Background Art

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions and can close, carry, and interrupt the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their usage scope. Among them, high-voltage circuit breakers are applied to high-voltage power grids and are the most important switching equipment in the power system.

[0003] To prevent mechanical failures of high-voltage circuit breakers, a detection device is usually used to detect the mechanical characteristics of high-voltage circuit breakers. It should be noted that during the on-site detection of the mechanical performance of high-voltage circuit breakers using the detection device, the connection plug of the detection device needs to be electrically connected to the aviation plug of the high-voltage circuit breaker. However, currently, the connection plugs of the detection device are difficult to be applicable to different types of high-voltage circuit breakers, and different types of high-voltage circuit breakers need to frequently replace different detection devices, resulting in low detection efficiency. Summary of the Invention

[0004] Based on this, in view of the problem that the current detection device is difficult to be applicable to different types of high-voltage circuit breakers, resulting in low detection range, it is necessary to provide a circuit breaker mechanical performance detection device and its detection method.

[0005] A circuit breaker mechanical performance detection device, the circuit breaker mechanical performance detection device includes a plug-in module electrically connected to the aviation plug in the circuit breaker, the aviation plug has a first conductive column, and / or a first conductive bushing, and the plug-in module has a docking component, wherein:

[0006] The docking component includes a second conductive column and a sleeve, the second conductive column is movably installed along the axial direction of the sleeve in the sleeve. When the aviation plug has the first conductive column, the second conductive column is used to abut against the first conductive column in the aviation plug and guide the first conductive column to be inserted into the sleeve. When the aviation plug has the first conductive bushing, the second conductive column is inserted into the first conductive bushing.

[0007] For the above circuit breaker mechanical performance detection device, when facing different types of aviation plugs, that is, whether the aviation plug has a first conductive column or a first conductive bushing, or both, this application can be correspondingly connected through the sleeve and the second conductive column slidably connected to the sleeve, so that the plug module of this application can be adapted to the aviation plugs of various circuit breakers on the market. Therefore, the circuit breaker mechanical performance detection device of this application can detect various types of high-voltage circuit breakers.

[0008] In one embodiment, the docking assembly further includes a first elastic member, which is installed inside the sleeve and is located on the moving stroke of the first conductive post.

[0009] In one embodiment, the plug-in module further includes a rotary clamping assembly rotatably installed on the sleeve. The rotary clamping assembly has a first position and a second position relative to the sleeve. When the rotary clamping assembly is in the first position, the rotary clamping assembly shields the docking opening of the sleeve. When the rotary clamping assembly is in the second position, the rotary clamping assembly exposes the docking opening and abuts against the aviation plug.

[0010] In one embodiment, the rotary clamping assembly includes a clamping arm and a rotary arm, where:

[0011] The clamping arm includes a positioning shaft and clamping plates arranged at both ends of the positioning shaft. A receiving space for clamping the sleeve is formed between the two clamping plates;

[0012] The rotary arm is rotatably sleeved on the positioning shaft. The rotary arm has the first position and the second position relative to the positioning shaft. When the rotary arm is in the first position, the rotary arm shields the docking opening of the sleeve. When the rotary arm is in the second position, the rotary arm exposes the docking opening and abuts against the aviation plug.

[0013] In one embodiment, the rotary arm includes a shielding plate and a socket plate arranged on the shielding plate. The socket plate is rotatably sleeved on the positioning shaft, and the shielding plate is used to shield or expose the docking opening.

[0014] In one embodiment, the number of the socket plates is two, and the rotary clamping assembly further includes a second elastic member sleeved on the positioning shaft. The two ends of the second elastic member are respectively installed on the two socket plates.

[0015] In one embodiment, the shielding plate includes a first plate body, a second plate body, and a third plate body. The first plate body and the third plate body are spaced apart along a first direction, and the two ends of the second plate body are respectively connected to the first plate body and the third plate body.

[0016] In one embodiment, the circuit breaker mechanical property detection device further includes a control module and an angle detection module communicatively connected to the control module;

[0017] The angle detection module is connected to the main shaft of the circuit breaker. The main shaft is used to be driven to rotate to drive the moving contact to separate from or dock with the static contact. The angle detection module is used to collect the rotation angle signal of the main shaft, and the control module is used to judge the mechanical state of the circuit breaker according to the rotation angle signal.

[0018] In one embodiment, the angle detection module includes an angle sensor, a multi-joint connecting rod and a magnetic base, where:

[0019] The angle sensor is arranged on the main shaft;

[0020] One end of the multi-joint connecting rod is rotatably installed on the angle sensor, and the other end is rotatably installed on the magnetic base;

[0021] The magnetic base is magnetically attracted to the outer shell of the circuit breaker.

[0022] In addition, the present application also provides a detection method for the circuit breaker mechanical performance detection device as described in the eighth technical solution above, including the following steps:

[0023] Provide a current acquisition module communicatively connected to the control module. The current acquisition module acquires the first current of the opening coil and the second current of the closing coil of the circuit breaker;

[0024] The control module calculates the closing speed, opening speed and opening torque stroke according to the rotation angle signal, the first current and the second current. Description of the Drawings

[0025] Figure 1 It is a schematic diagram of the docking structure of the plug-in module and the aviation plug provided by the present application.

[0026] Figure 2 It is a schematic diagram of the docking structure of the plug-in module and the aviation plug from another perspective provided by the present application.

[0027] Figure 3 is Figure 2 The enlarged schematic diagram of the structure at A in

[0028] Figure 4 It is a schematic diagram of the structure of the circuit breaker mechanical performance detection device provided by the present application.

[0029] Figure 5 It is the front view of the circuit breaker mechanical performance detection device provided by the present application.

[0030] Figure 6 is Figure 4 The enlarged schematic diagram of the structure at B in

[0031] Figure 7It is a schematic block diagram of the principle of the circuit breaker mechanical performance detection method provided by this application.

[0032] Among them:

[0033] 10. Circuit breaker mechanical performance detection device; 20. Circuit breaker; 21. Aviation plug; 22. First conductive column; a. First direction;

[0034] 100. Plug-in module; 110. Docking component; 111. Second conductive column; 112. Sleeve; 113. First elastic member; 120. Rotating clamping component; 121. Clamping arm; 1211. Clamping plate; 1212. Pad; 122. Rotating arm; 1221. Socket plate; 1222. First plate body; 1223. Second plate body; 1224. Third plate body; 1225. Transmission plate; 1226. Bearing plate; 123. Second elastic member;

[0035] 200. Angle detection module; 210. Angle sensor; 220. Multi-joint connecting rod; 230. Magnetic base;

[0036] 300. Wiring module; 310. First wire; 320. Second wire;

[0037] 400. Communication module; 410. Communication wire; 500. Outer shell; 600. Display module; 700. Printing module; 800. Broadcasting module. Detailed implementation manners

[0038] To make the above objects, features, and advantages of this application more obvious and understandable, the following will describe the detailed implementation manners of this application with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand this application. However, this application can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0041] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0043] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0044] Refer to Figure 1 as shown Figure 1Schematic diagram of the docking structure between the plug-in module 100 and the aviation plug 21 provided by an embodiment of the present application. The mechanical property detection device 10 of the circuit breaker 20 provided by an embodiment of the present application includes a plug-in module 100 electrically connected to the aviation plug 21 in the circuit breaker 20. It should be noted that different types of circuit breakers 20 have different types of aviation plugs 21. Some aviation plugs 21 have a first conductive column 22, some aviation plugs 21 have a first conductive bushing, and some aviation plugs 21 have both a first conductive column 22 and a first conductive bushing.

[0045] Based on this, the plug-in module 100 of the present application has a docking component 110. The docking component 110 includes a second conductive column 111 and a sleeve 112. The second conductive column 111 is installed in the sleeve 112 so as to be movable along the axial direction of the sleeve 112. Specifically, a slide rail can be provided on the inner wall of the sleeve 112, and the slide rail is laid along the axial direction of the sleeve 112. A slider adapted to the slide rail is provided on the second conductive column 111, so as to realize the sliding connection between the second conductive column 111 and the sleeve 112. It should be noted that the sliding connection manner between the second conductive column 111 and the sleeve 112 is not limited to the above-mentioned slider and slide rail, and other types of sliding connections are also acceptable.

[0046] Through the above settings, during specific docking, when the aviation plug 21 of the circuit breaker 20 has a first conductive column 22, the second conductive column 111 is used to abut against the first conductive column 22 in the aviation plug 21 and guide the first conductive column 22 to be inserted into the sleeve 112, that is, the first conductive column 22 pushes the second conductive column 111 to move along the axial direction of the sleeve 112, so that the first conductive column 22 itself also smoothly enters the sleeve 112 to realize the docking between the plug module and the aviation plug 21; when the aviation plug 21 of the circuit breaker 20 has a first conductive bushing, the second conductive column 111 can be inserted into the first conductive bushing. It should also be emphasized that when the aviation plug 21 of the circuit breaker 20 has a first conductive column 22 and a first conductive bushing, the plug module has a plurality of docking components 110, and the plurality of docking components 110 are respectively docked with the corresponding first conductive bushing and first conductive column 22 by using the second conductive column 111 and the sleeve 112. Therefore, the plug module of the present application can be adapted to the aviation plugs 21 of various circuit breakers 20 on the market, so that the mechanical property detection device 10 of the circuit breaker 20 of the present application can detect various types of high-voltage circuit breakers 20.

[0047] To facilitate the separation of the plug-in module 100 from the aviation plug 21 or, in a preferred embodiment, the docking assembly 110 further includes a first elastic member 113. The first elastic member 113 is installed within the sleeve 112 and is located on the moving stroke of the first conductive post 22. Specifically, the first elastic member 113 is a spring. With the above arrangement, when the first conductive post 22 guides to the second conductive post 111 or is inserted into the first conductive bushing, the first elastic member 113 is compressed. The first elastic member 113 has a rebounding force, which facilitates the rapid separation of the above two components.

[0048] Combined Figure 2 with Figure 3 shown Figure 2 FIG. is a schematic diagram of the docking structure of the plug-in module 100 and the aviation plug 21 from another perspective provided by an embodiment of the present application. Figure 3 is Figure 2 an enlarged schematic view of the structure at A in FIG. To strengthen the connection between the plug-in module 100 and the aviation plug 21 while protecting the second conductive post 111, in a preferred embodiment, the plug-in module 100 further includes a rotary clamping assembly 120 rotatably installed on the outer periphery of the sleeve 112. The rotary clamping assembly 120 has a first position and a second position relative to the sleeve 112. When the rotary clamping assembly 120 is in the first position, the rotary clamping assembly 120 shields the docking opening of the sleeve 112. When the rotary clamping assembly 120 is in the second position, the rotary clamping assembly 120 exposes the docking opening and abuts against the aviation plug 21.

[0049] During specific use, when the plug-in module 100 needs to be docked with the aviation plug 21, the rotary clamping assembly 120 is rotated to the second position, so that the second conductive post 111 in the plug-in module 100 is docked with the first conductive post 22 or the first conductive bushing of the aviation plug 21 through the docking opening of the sleeve 112. After the docking is completed, the rotatable rotary clamping assembly 120 abuts against the outer periphery of the docked first conductive post 22 or the first conductive bushing, that is, the rotary clamping assembly 120 connected to the docking assembly 110 provides a supporting force to the first conductive post 22 or the first conductive bushing, ensuring the docking stability between the plug-in module 100 and the aviation plug 21. When the use is completed, first separate the second conductive post 111 from the aviation plug 21, and then rotate the rotary clamping assembly 120 to the first position to shield the first conductive post 22 in the plug-in module 100 and protect the first conductive post 22.

[0050] In order to more conveniently design the rotary clamping assembly 120, specifically, the rotary clamping assembly 120 includes a clamping arm 121 and a rotary arm 122. The clamping arm 121 includes a positioning shaft and clamping plates 1211 arranged at both ends of the positioning shaft. When specifically arranged, the axis of the positioning shaft is perpendicular to the axis of the sleeve 112, and the clamping plates 1211 are perpendicular to the positioning shaft. An accommodating space for clamping the sleeve 112 is formed between the two clamping plates 1211. When specifically arranged, backing plates 1212 are further arranged on the two sides of the clamping plates 1211 close to each other, and the clamping plates 1211 clamp the sleeve 112 through the backing plates 1212 to reduce scratches on the sleeve 112.

[0051] The rotary arm 122 is rotatably sleeved on the positioning shaft. The rotary arm 122 has a first position and a second position relative to the positioning shaft. When the rotary arm 122 is in the first position, the rotary arm 122 shields the docking opening of the sleeve 112. When the rotary arm 122 is in the second position, the rotary arm 122 exposes the docking opening and abuts against the aviation plug 21. Through the above arrangement, the clamping arm 121 in the clamping assembly is used to clamp the sleeve 112, and the rotary arm 122 rotates around an axis perpendicular to the sleeve 112 so that the rotary arm 122 can shield or expose the docking opening of the sleeve 112.

[0052] In order to facilitate the installation of the rotary arm 122 on the clamping arm 121, more specifically, the rotary arm 122 includes a shielding plate and a socket plate 1221 arranged on the shielding plate. The socket plate 1221 is rotatably sleeved on the positioning shaft, and the shielding plate is used to shield or expose the docking opening. When specifically arranged, in order for the clamping arm 121 to provide stronger support for the first conductive column 22 or the first conductive bushing of the aviation plug 21, further, the number of socket plates 1221 is two, and the two socket plates 1221 are sleeved on the positioning shaft at intervals and in parallel. The rotary clamping assembly 120 further includes a second elastic member 123 sleeved on the positioning shaft, and the two ends of the second elastic member 123 are respectively installed on the two socket plates 1221. When specifically arranged, the second elastic member 123 is preferably a torsion spring.

[0053] The rotary arm 122 is rotatably sleeved on the positioning shaft. The rotary arm 122 has a first position and a second position relative to the positioning shaft. When the rotary arm 122 is in the first position, the rotary arm 122 shields the docking opening of the sleeve 112. When the rotary arm 122 is in the second position, the rotary arm 122 exposes the docking opening and abuts against the aviation plug 21. Through the above arrangement, the clamping arm 121 in the clamping assembly is used to clamp the sleeve 112, and the rotary arm 122 rotates around an axis perpendicular to the sleeve 112 so that the rotary arm 122 can shield or expose the docking opening of the sleeve 112.

[0054] With the above arrangement, when the plug-in module 100 needs to be docked with the aviation plug 21, the rotating arm 122 is rotated to the second position, the rotating arm 122 exposes the docking opening, and the torsion spring generates a rotational force; the second conductive post 111 is allowed to mate with the first conductive post 22 or the first conductive sleeve of the aviation plug 21 through the docking opening; the rotating arm 122 is then released, and the rotational force of the torsion spring causes the rotating arm 122 to clamp the first conductive post 22 or the first conductive sleeve, thereby strengthening the connection between the plug-in module 100 and the aviation plug 21. When use is complete, the rotating arm 122 is rotated to separate from the aviation plug 21, and the torsion spring generates a rotational force; the second conductive post 111 is separated from the aviation plug 21, and the rotational force generated by the torsion spring drives the rotating arm 122 back to the first position, protecting the first conductive post 22.

[0055] To facilitate the design of the shielding panel, the shielding panel further includes a first plate 1222, a second plate 1223, and a third plate 1224. The first plate 1222 and the third plate 1224 are spaced apart along a first direction a, and the second plate 1223 is connected to the first plate 1222 and the third plate 1224 at both ends. To facilitate the shielding panel to drive the rotating arm 122 to rotate under force, the shielding panel also includes a transmission plate 1225 connected to the side of the first plate 1222 facing away from the second plate 1223. The transmission plate 1225 is connected to the first plate 1222 at a predetermined angle, and the extension direction of the transmission plate 1225 is opposite to the extension direction of the second plate 1223. A support plate 1226 is provided on the end of the transmission plate 1225 facing away from the first plate 1222, which facilitates the user to apply force to rotate the support plate 1226.

[0056] The above-mentioned shielding plate is arranged to be spaced apart along the first direction a by setting the first plate body 1222 and the third plate body 1224, so that the first plate body 1222 can be rotatably installed on the positioning shaft through the socket plate 1221, while not affecting the third plate body 1224 from contacting with the first conductive column 22 or the first conductive shaft sleeve under the driving force of the torsion spring rotation.

[0057] Combine Figure 4 、 Figure 5 and Figure 6 As shown, Figure 4 This is a structural diagram of a circuit breaker 20 mechanical performance detection device 10 provided in an embodiment of the present application. Figure 5 This is a front view of a mechanical performance detection device 10 for a circuit breaker 20 provided in one embodiment of the present application. Figure 6 for Figure 4Schematic enlarged view of the structure at B in the figure. To more conveniently implement the detection of the mechanical properties of the circuit breaker 20 by the mechanical property detection device 10 of the circuit breaker 20, in a preferred embodiment, the mechanical property detection device 10 of the circuit breaker 20 further includes a control module and an angle detection module 200 communicatively connected to the control module. When specifically arranged, the control module is connected to the angle detection module 200 through a first wire 310 in a wiring module 300.

[0058] The angle detection module 200 is connected to the main shaft of the circuit breaker 20. The main shaft is used to be driven to rotate to drive the moving contact to separate from or dock with the static contact, so as to correspondingly achieve opening and closing. The angle detection module 200 is used to collect the rotation angle signal of the main shaft, and the control module is used to judge the mechanical state of the circuit breaker 20 according to the rotation angle signal. It should be noted that the circumferential length of the cross-section circle of the main shaft is denoted as D, and D can be obtained by measurement. Through D and the collected rotation angle, the displacement information of the moving contact can be obtained, so as to monitor and track the position of the moving contact in real time, so that mechanical faults can be processed in time when mechanical faults occur during the opening and closing processes.

[0059] To more conveniently design the angle detection module 200, specifically, the angle detection module 200 includes an angle sensor 210, a multi-joint link 220, and a magnetic base 230. Among them, the angle sensor 210 is arranged on the main shaft. When specifically arranged, the angle sensor 210 is inserted into the key block of the main shaft through a keyway; one end of the multi-joint link 220 is rotatably installed on the angle sensor 210, and the other end of the multi-joint link 220 is rotatably installed on the magnetic base 230. When specifically arranged, the multi-joint link 220 includes a plurality of connected links, and adjacent two links are connected through a kinematic pair; the magnetic base 230 is magnetically attracted to the outer shell 500 of the circuit breaker 20. Through the above arrangement, the angle sensor 210 is connected to the outer shell 500 of the circuit breaker 20 through the multi-joint link 220, which increases the stability of the angle sensor 210, and the multi-joint link 220 is beneficial to the installation of the magnetic base 230 at multiple positions in the outer shell 500, improving the flexibility of installation. It should be noted that the magnetic base 230 is a relatively mature technology and will not be elaborated here too much.

[0060] Combined Figure 7 as shown Figure 7 is the principle block diagram of the mechanical property detection method of the circuit breaker 20 provided by an embodiment of the present application. The present application also provides a detection method based on the mechanical property detection device 10 of the circuit breaker 20 described in the above embodiment, including the following steps:

[0061] Step S1: Provide a current acquisition module communicatively connected to the control module. The current acquisition module acquires the first current of the opening coil and the second current of the closing coil in the circuit breaker 20. Specifically, the wiring module 300 further includes a second wire 320. One end of the second wire is connected to the sleeve 112, and the other end of the second wire is electrically connected to the power supply module through the current acquisition module and the control module. The control module is also connected to the conductive terminal of the circuit breaker 20 through the communication wire 410 in the communication module 400. Moreover, the mechanical property detection device 10 of the circuit breaker 20 further includes a housing 500, a timing module, a display module 600, and a delivery module provided in the housing 500. The timing module, the display module 600, and the delivery module are also communicatively connected to the control module.

[0062] Step S2: The control module calculates the closing speed, opening speed, and opening stroke based on the rotation angle signal, the first current, and the second current. Specifically, the user inputs the type of the angle sensor and the total stroke of the circuit breaker 20 to be measured through the delivery module. Different circuit breakers 20 are installed with different types of angle sensors 210. Just select the type of the angle sensor installed on the current circuit breaker 20 in the delivery module. The power supply module supplies power to the plug-in module 100 and the angle detection module 200 through the wiring module 300. The user issues closing and opening commands through the delivery module. The control module controls the driving mechanism in the circuit breaker 20 to drive the main shaft to rotate to achieve the corresponding closing operation and opening operation. During this process, when the closing coil and the opening coil obtain current, the current acquisition module acquires the current to generate a first signal and sends it to the control module, and the control module starts the timing module. When the closing and opening are completed, the current of the closing coil and the opening coil changes. The current acquisition module acquires the current to generate a second signal and sends it to the control module, and the control module closes the timing module. The time differences between the two times of starting and closing the timing module respectively correspond to the closing time t1 and the opening time t2.

[0063] The control module is also communicatively connected to the data processing module. The control module transmits the closing angle θ1, opening angle θ2 collected by the angle sensor 210, the closing time t1, opening time t2 transmitted by the timing module, and the preset D to the data processing module. Denote the closing speed as V1, the opening speed as V2, and the opening stroke as H. The data processing module calculates according to V1 = θ1 * D / t1, V2 = θ2 * D / t2, and H = θ1 * D, where the units of V1, V2, and H are cm / s, cm / s, and cm respectively. It should be noted that the maximum closing and opening speeds can also be calculated. This application takes the maximum closing speed as an example for illustration, and the maximum opening speed is similar.

[0064] Denote the maximum closing speed as V MAX and denote the instantaneous speed at the i-th moment as V i , 瞬, the data processing module calculates all the instantaneous speeds to obtain a set of instantaneous speeds, and finds the maximum speed V in the set of instantaneous speeds. MAX , the data processing module based on V i , 瞬 = (θ 1,i - θ 1，i-1 ) / Δt to calculate the instantaneous speed, where Δt is the time length after dividing the time t1 into n equal parts; (θ 1,i - θ 1，i-1 ) is the angle change value after dividing the time t1 when θ1 is divided into n equal parts.

[0065] It should also be emphasized that the display module 600 is used to display each measurement data; the data processing module can also obtain the shunt trip coil resistance and closing coil resistance of the circuit breaker 20 through the ratio of the voltage of the power supply module to the current flowing through the shunt trip coil and the closing coil; the present application can also set a printing module 700 and a broadcasting module 800 that are communicatively connected to the control module in the housing 500. The printing module 700 is convenient for paper record of data, and the broadcasting module 800 is convenient for broadcasting the measured data or when the measured data does not meet the requirements, an alarm is given to prompt the abnormal state of the circuit breaker 20.

[0066] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0067] The above-described embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A circuit breaker mechanical performance detection device, characterized in that, The circuit breaker mechanical performance detection device includes a plug-in module electrically connected to the aviation plug in the circuit breaker. The aviation plug has a first conductive post and / or a first conductive bushing. The plug-in module has a docking component, where: The docking component includes a second conductive post and a sleeve. The second conductive post is installed in the sleeve so as to be movable along the axial direction of the sleeve. When the aviation plug has the first conductive post, the second conductive post is used to abut against the first conductive post in the aviation plug and guide the first conductive post to be inserted into the sleeve. When the aviation plug has the first conductive bushing, the second conductive post is inserted into the first conductive bushing.

2. The circuit breaker mechanical property detection device according to claim 1, characterized in that, The docking component further includes a first elastic member. The first elastic member is installed in the sleeve and is located on the moving stroke of the first conductive post.

3. The circuit breaker mechanical performance detection device according to claim 1, characterized in that, The plug-in module further includes a rotary clamping component rotatably installed on the sleeve. The rotary clamping component has a first position and a second position relative to the sleeve. When the rotary clamping component is in the first position, the rotary clamping component shields the docking opening of the sleeve. When the rotary clamping component is in the second position, the rotary clamping component exposes the docking opening and abuts against the aviation plug.

4. The circuit breaker mechanical property detection device according to claim 3, characterized in that, The rotary clamping component includes a clamping arm and a rotary arm, where: The clamping arm includes a positioning shaft and clamping plates provided at both ends of the positioning shaft. A receiving space for clamping the sleeve is formed between the two clamping plates. The rotary arm is rotatably sleeved on the positioning shaft. The rotary arm has the first position and the second position relative to the positioning shaft. When the rotary arm is in the first position, the rotary arm shields the docking opening of the sleeve. When the rotary arm is in the second position, the rotary arm exposes the docking opening and abuts against the aviation plug.

5. The circuit breaker mechanical property detection device according to claim 4, wherein The rotary arm includes a shielding plate and a socket plate provided on the shielding plate. The socket plate is rotatably sleeved on the positioning shaft. The shielding plate is used to shield or expose the docking opening.

6. The circuit breaker mechanical property detection device according to claim 5, characterized in that The number of the socket plates is two. The rotary clamping component further includes a second elastic member sleeved on the positioning shaft. Two ends of the second elastic member are respectively installed on the two socket plates in a one-to-one correspondence.

7. The circuit breaker mechanical performance detection device according to claim 5, characterized in that, The shielding plate includes a first plate body, a second plate body, and a third plate body. The first plate body and the third plate body are spaced apart along a first direction. Two ends of the second plate body are respectively connected to the first plate body and the third plate body.

8. The circuit breaker mechanical property detection device according to claim 1, characterized in that, The circuit breaker mechanical performance detection device further includes a control module and an angle detection module communicatively connected to the control module. The angle detection module is connected to the main shaft of the circuit breaker. The main shaft is used to be driven to rotate to drive the moving contact and the static contact to separate or dock. The angle detection module is used to collect the rotation angle signal of the main shaft. The control module is used to judge the mechanical state of the circuit breaker according to the rotation angle signal.

9. The circuit breaker mechanical property detection device according to claim 8, wherein The angle detection module includes an angle sensor, a multi-joint connecting rod, and a magnetic base, where: The angle sensor is arranged on the main shaft. One end of the multi-joint connecting rod is rotatably mounted on the angle sensor, and the other end is rotatably mounted on the magnetic base; The magnetic base is magnetically attracted to the outer shell of the circuit breaker.

10. A detection method for the circuit breaker mechanical property detection device according to claim 8, characterized in that, It includes the following steps: Provide a current acquisition module communicatively connected to the control module, and the current acquisition module acquires a first current of the opening coil and a second current of the closing coil in the circuit breaker; The control module calculates the closing speed, opening speed and opening torque stroke according to the rotation angle signal, the first current and the second current.

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