A circuit breaker operation monitoring and control device

Abstract

The application discloses a kind of circuit breaker operation monitoring control device, be arranged in the installation cabinet of circuit breaker mechanism, comprising: device shell, inside is provided with monitoring host, for being connected with sensor assembly by connecting component;Sensor assembly is used to monitor the operating state of circuit breaker mechanism;Mounting structure is used for the installation of device shell in arbitrary part in cabinet;Protection structure is arranged on device shell and is connected with circuit breaker mechanism, for when the circuit breaker mechanism is disconnected, control is released into arc-extinguishing chamber SF6 gas, and simultaneously collect part of the released SF6 gas to facilitate the quality of SF6 gas inspection.The application can not only quickly release SF6 gas when the circuit is disconnected, reduce arc protection overall circuit and structure, but also can induct monitoring and analysis to obtain the electrical parameter and mechanical characteristic parameter of circuit breaker energy storage motor, facilitate artificial further analysis of the mechanism characteristics of circuit breaker, to find fault signs in advance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit breaker operation monitoring, in particular to a circuit breaker operation monitoring and control device. BACKGROUND

[0002] High-voltage circuit breakers are divided into oil circuit breakers, vacuum circuit breakers, gas-blast circuit breakers, magnetic-blast circuit breakers and self-gas circuit breakers, among which high-voltage circuit breakers are generally installed in cabinet bodies, used to turn on and off circuits in normal times, and used to cut off fault currents to prevent the spread of faults in fault times.

[0003] The existing circuit breakers cannot monitor and diagnose high-voltage circuit breakers in advance, cannot realize the whole life cycle management of high-voltage circuit breakers, and often affect the installation device of the circuit breaker during use in actual use, and the electric arc phenomenon occurs when the circuit breaker is broken, causing irreversible damage to the contact arm of the circuit breaker.

[0004] Therefore, the present application provides a circuit breaker operation monitoring and control device to solve the above technical problems, and the above content is only used to assist understanding of the technical scheme of the present application, and does not mean that the above content is the closest prior art. SUMMARY

[0005] The main purpose of the present application is to provide a circuit breaker operation monitoring and control device which can quickly release SF6 gas when the circuit is separated, reduce the arc protection of the overall circuit and structure, and can sense, monitor and analyze the electrical parameters and mechanical characteristic parameters of the circuit breaker energy storage motor, facilitate manual further analysis of the mechanism characteristics of the circuit breaker, and find out the fault signs in advance.

[0006] The present application solves the above technical problems by adopting the following technical scheme:

[0007] A circuit breaker operation monitoring and control device is arranged in the installation cabinet body of the circuit breaker mechanism, comprising:

[0008] A device shell is internally provided with a monitoring host, used to be connected with a sensor assembly through a connecting assembly;

[0009] The sensor assembly is provided with multiple groups and is installed on the circuit breaker mechanism, used to monitor the running state of the circuit breaker mechanism;

[0010] An installation structure is arranged on the device shell, used to install the device shell at any part in the cabinet body;

[0011] A protection structure is arranged on the device shell and connected with the circuit breaker mechanism, used to control the release of SF6 gas into the arc extinguishing chamber when the circuit breaker mechanism is broken, and simultaneously collect part of the released SF6 gas to facilitate the inspection of the quality of SF6 gas.

[0012] Preferably, the mounting structure comprises a grid plate, mounting plates at both ends of the grid plate, fixing bolts arranged on the mounting plates for mounting inside the cabinet body, and a plurality of sets of clamping fixing members arranged on the device shell for mounting at any position of the grid plate, wherein:

[0013] The clamping fixing member is composed of an inverted J-shaped elastic block, a semicircular protrusion arranged at the bottom end of the inverted J-shaped elastic block, and an arc-shaped protrusion arranged at the top end of the inverted J-shaped elastic block.

[0014] Preferably, the protection structure comprises a gas storage cavity arranged inside the device shell, a piston plate sliding in the vertical direction inside the gas storage cavity, a plug plate arranged at the bottom of the piston plate and moving through the device shell along with the piston plate, a sliding through slot opened on the plug plate, a Z-shaped sliding plate sliding in the vertical direction inside the sliding through slot, a bottom plate at the bottom of the plug plate, an adjusting assembly arranged on the bottom plate for adjusting and controlling the sliding of the Z-shaped sliding plate inside the sliding through slot, a driving member arranged on the device shell for driving the bottom plate to slide upward along with the plug plate and the piston plate in the vertical direction, and a gas charging member arranged inside the arc-extinguishing chamber of the circuit breaker mechanism and communicating with the gas storage cavity for controlling the release of SF6 gas into the arc-extinguishing chamber during the upward sliding of the piston plate.

[0015] The sidewall of the gas storage cavity is provided with a gas supply pipeline for connecting the gas charging member, and the inside of the device shell is further provided with a first electromagnetic valve connected with the gas supply pipeline for controlling the communication between the gas supply pipeline and the gas storage cavity. The bottom of the gas storage cavity is provided with an opening, and a second electromagnetic valve is arranged at the opening for controlling the communication between the bottom of the gas storage cavity and the outside of the device shell.

[0016] Preferably, the adjusting assembly comprises two sets of screw rods screwing in the vertical state on the bottom plate, a limiting circular block arranged at the top end of the screw rod and screwing inside the Z-shaped sliding plate, and a rotating block arranged at the bottom end of the screw rod.

[0017] The upper surface of the Z-shaped sliding plate is provided with a contact button, and the lower space of the piston plate is sealed in the state that the upper surface of one end of the Z-shaped sliding plate contacts the device shell. The contact button is electrically connected to the monitoring host.

[0018] Preferably, the driving member comprises a positioning plate arranged on the sidewall of the device shell, a plug rod sliding in the vertical state through the positioning plate for mounting on the bottom plate, a connecting top plate for connecting and fixing at the top end of the plug rod, and a spring sleeved outside the plug rod and connected at both ends with the bottom plate and the positioning plate.

[0019] Preferably, the driving member further comprises a connecting rod arranged on the connecting top plate, a sliding piston arranged at the bottom of the connecting rod, and a limiting sleeve arranged on the positioning plate for the sliding piston to slide inside.

[0020] The inflatable member comprises a sealed shell located in an arc extinguishing chamber of the circuit breaker mechanism, an inflatable connecting port arranged on the sealed shell, and a one-way valve arranged on the inflatable connecting port and used for air transmission from the inside of the sealed shell to the arc extinguishing chamber.

[0021] The gas transmission pipeline is used for communication between the inside of the sealed shell and the inside of the gas storage cavity, and the inside of the sealed shell and the inside of the limiting sleeve at the bottom space of the sliding piston.

[0022] Preferably, the sensor assembly comprises a protective shell, and any one of a temperature monitoring sensor, a current Hall sensor, a posture sensor and a transient sensor is arranged in the protective shell and connected to the monitoring host through a connecting line.

[0023] The connecting assembly comprises a plurality of wiring port groups arranged on the device shell and used for connecting the monitoring host, an adjusting slide rail arranged on the device shell and located at the wiring port part, and a plurality of wire bundling assemblies arranged on the adjusting slide rail and used for connecting line and wiring installation.

[0024] Preferably, the monitoring host is internally provided with a monitoring unit, a threshold preset unit, a model calculation unit, a data analysis processing unit and a data transmission unit, wherein:

[0025] The monitoring unit is used for extracting corresponding waveform features through current size changes and action time;

[0026] The threshold preset unit is used for presetting an alarm threshold of the circuit breaker arm temperature;

[0027] The model calculation unit is used for obtaining a mathematical model through a fitting function of data collected by the posture sensor and the transient sensor multiple times;

[0028] The data analysis processing unit is used for calculating corresponding circuit breaker mechanical characteristic parameters by using the mathematical model through a motion curve of the circuit breaker mechanism;

[0029] The data transmission unit is used for further controlling electrical connection between the monitoring host and the sensor assembly through control of the communication of the wiring port.

[0030] The application provides a circuit breaker operation monitoring and control device.

[0031] 1. The application sets up a protection structure, when the current Hall sensor senses that the current amount breaks through a certain value, the protection structure is unlocked, which can quickly release SF6 gas when the temperature monitoring sensor probe sensing contact temperature suddenly rises due to circuit breaking separation, and the SF6 gas with high insulation performance and stability can be ionized and decomposed by the high temperature of arc released during circuit breaking, and the negative ions after gas ionization combine with the positive ions of arc, so as to quickly reduce the arc to protect the overall circuit and structure.

[0032] 2. The application uses sensor components to sense and monitor, and uses a monitoring host to analyze and obtain the electrical parameters (such as energy storage time, energy storage current, and operating current of the opening and closing coil) and mechanical characteristic parameters (such as opening and closing time, speed, and contact working pressure) of the circuit breaker energy storage motor, which can analyze the characteristics of each operating mechanism, find out the failure signs of refusal and misoperation in advance, and judge the mechanical life, and timely alarm, and the collected data can be compared in multiple dimensions to establish a mathematical model, predict the electrical life of the circuit breaker in real time, and realize the whole life cycle management of the high-voltage circuit breaker.

[0033] 3. The application sets up a mounting structure, which can quickly fix the carding fixing part at any part of the grid plate, can conveniently increase other structures on the grid plate for use, improve the analysis effect of the circuit breaker, and conveniently install the device at any part in the cabinet, and adapt to the detection environment after the circuit breaker is installed in different situations.

[0034] 4. The application also sets up a limiting sleeve, a sliding piston and a connecting rod connected with the inflation part when the driving part control bottom plate drives the plugboard and the piston plate to slide upward in the vertical direction, which can release the SF6 gas in the arc chamber while storing part of the SF6 gas in the limiting sleeve at the bottom of the sliding piston, so that the gas can be used to further detect the leakage of SF6 gas molecules stored in the gas storage cavity, and the gas storage cavity can be repaired in time when it is damaged. BRIEF DESCRIPTION OF DRAWINGS

[0035] The drawings accompanying the specification of this application form a part of the application and serve to further provide a further understanding of the application, the illustrative embodiments of the application and its description serve to explain the application without limiting it in any way. In the drawings:

[0036] Figure 1 It is a whole three-dimensional schematic view of the application;

[0037] Figure 2 It is a whole three-dimensional schematic view of the application in the protection structure installation state;

[0038] Figure 3Fig. 1 is a perspective view of the overall structure of the clamping fixing device of the present application;

[0039] Figure 4 Fig. 2 is a sectional view of the connection structure of the driving device of the present application;

[0040] Figure 5 Fig. 3 is a sectional view of the connection structure of the device shell of the present application;

[0041] Figure 6 Fig. 4 is a sectional view of the overall structure of the inflation device of the present application;

[0042] Figure 7 Fig. 5 is a schematic diagram of the internal system connection of the monitoring host of the present application.

[0043] In the figure:

[0044] 1, device shell;

[0045] 2, monitoring host; 21, monitoring unit; 22, threshold preset unit; 23, model calculation unit; 24, data analysis processing unit; 25, data transmission unit;

[0046] 3, mounting structure; 31, grid plate; 32, mounting plate; 33, fixed bolt; 34, clamping fixing device; 341, inverted J-shaped elastic block; 342, semicircular protrusion; 343, arc-shaped protrusion;

[0047] 4, protection structure; 41, gas storage cavity; 411, first electromagnetic valve; 412, second electromagnetic valve; 413, opening; 414, gas transmission pipeline; 42, piston plate; 43, plug plate; 44, sliding slot; 45, Z-shaped sliding plate; 451, contact button; 46, adjustment assembly; 461, limiting round block; 462, screw rod; 463, rotating block; 47, bottom plate; 48, driving device; 481, positioning plate; 482, plug rod; 483, spring; 484, connecting top plate; 485, connecting rod; 486, sliding piston; 487, limiting sleeve; 49, inflation device; 491, sealing shell; 492, inflation connection port; 493, one-way valve;

[0048] 5, connection assembly; 51, wiring port; 52, adjustment sliding rail; 53, wire binding assembly;

[0049] 6, sensor assembly; 61, protection shell; 62, connection line; 63, temperature monitoring sensor; 64, current Hall sensor; 65, attitude sensor; 66, transient sensor. DETAILED DESCRIPTION

[0050] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. In the case of no conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0051] In the embodiments, refer to the drawings in the embodiments of the present application for details Figures 1 to 7 .

[0052] As shown in Figure 1 and Figure 5 , the present application provides a circuit breaker operation monitoring and control device, which is arranged in a mounting cabinet of a circuit breaker mechanism, comprising:

[0053] A device shell 1 is internally provided with a monitoring host 2, which is connected with a sensor assembly 6 through a connecting assembly 5;

[0054] The sensor assembly 6 is provided with multiple groups and is mounted on the circuit breaker mechanism, for monitoring the operation state of the circuit breaker mechanism;

[0055] A mounting structure 3 is arranged on the device shell 1, for mounting the device shell 1 at any part in the cabinet, to adapt to the detection environment after the circuit breaker is installed under different conditions;

[0056] A protection structure 4 is arranged on the device shell 1 and connected with the circuit breaker mechanism, for controlling the release of SF6 gas into the arc extinguishing chamber when the circuit breaker mechanism is tripped, and simultaneously collecting part of the released SF6 gas for the convenience of inspecting the quality of the SF6 gas.

[0057] It should be noted that the SF6 gas here has high insulation performance and stability, and the high temperature released by the arc during tripping can ionize and decompose the SF6 gas molecules, and the negative ions after the ionization of the gas can combine with the positive ions of the arc, thereby quickly reducing the arc to protect the overall circuit and structure.

[0058] Specifically, as shown in Figure 1 , Figure 2 and Figure 3 , the mounting structure 3 comprises a grid plate 31, mounting plates 32 located at both ends of the grid plate 31, fixing bolts 33 arranged on the mounting plates 32 for mounting inside the cabinet, and multiple sets of clamping fixing members 34 arranged on the device shell 1 for mounting at any part of the grid plate 31, wherein:

[0059] The engaging fixing member 34 is composed of a reversed J-shaped elastic block 341, a semicircular protrusion 342 installed at the bottom end of the reversed J-shaped elastic block 341, and an arc-shaped protrusion 343 installed at the top end of the reversed J-shaped elastic block 341.

[0060] It should be noted that the reversed J-shaped elastic block 341 is made of elastic metal and has good deformation and resilience.

[0061] At this time, the installation process of the device shell 1 on the grid plate 31 is as follows: the bottom of the reversed J-shaped elastic block 341 is inclined downward and inserted into the hole body of the grid plate 31, when it is inserted to a certain length, the reversed J-shaped elastic block 341 is inclined upward and inserted into the hole body of the same grid plate 31, so that the arc-shaped protrusion 343 is located above the hole body of the grid plate 31 and is clamped to complete the installation and clamping of the engaging fixing member 34. At this time, the semicircular protrusion 342 is clamped and connected with the grid plate 31 below the hole body of the grid plate 31.

[0062] The engaging fixing member 34 can also be installed on other structures for installation at any part of the grid plate 31 during actual use.

[0063] In summary, the quick clamping and fixing of the engaging fixing member 34 at any part of the grid plate 31 can facilitate the addition of other structures on the grid plate 31 for use, improve the analysis effect of the circuit breaker, and facilitate the installation of the device in any part of the cabinet, adapting to the detection environment after the installation of the circuit breaker under different conditions.

[0064] In a specific embodiment, as shown in Figure 5 The protection structure 4 includes a gas storage cavity 41 arranged inside the device shell 1, a piston plate 42 sliding in the vertical direction in the gas storage cavity 41, a plug plate 43 arranged at the bottom of the piston plate 42 and moving through the device shell 1 with the piston plate 42, a sliding through slot 44 opened on the plug plate 43, a Z-shaped sliding plate 45 sliding in the vertical direction in the sliding through slot 44, a bottom plate 47 located at the bottom of the plug plate 43, an adjusting assembly 46 installed on the bottom plate 47 for adjusting and controlling the sliding of the Z-shaped sliding plate 45 in the sliding through slot 44, a driving member 48 arranged on the device shell 1 for driving the bottom plate 47 to slide the plug plate 43 and the piston plate 42 upward in the vertical direction, and a gas charging member 49 installed in the arc-extinguishing chamber of the circuit breaker mechanism and communicating with the gas storage cavity 41 for controlling the release of SF6 gas into the arc-extinguishing chamber during the upward sliding of the piston plate 42.

[0065] During use, when the driving member 48 controls the bottom plate 47 to slide the plug plate 43 and the piston plate 42 upward in the vertical direction, the SF6 gas is released into the arc-extinguishing chamber through the gas charging member 49.

[0066] Further specifically, as shown in Figure 5As shown, the sidewall of the gas storage cavity 41 is provided with a gas supply pipeline 414 for connecting the inflation member 49, and the inside of the device housing 1 is further provided with a first electromagnetic valve 411 connected with the gas supply pipeline 414 for controlling the communication between the gas supply pipeline 414 and the gas storage cavity 41, and the bottom of the gas storage cavity 41 is provided with an opening 413, and the second electromagnetic valve 412 is arranged at the opening 413 for controlling the communication between the bottom of the gas storage cavity 41 and the outside of the device housing 1.

[0067] Therefore, under the condition that the first electromagnetic valve 411 and the second electromagnetic valve 412 are both opened, and the gas supply pipeline 414 and the opening 413 are both in a communication state, when the piston plate 42 slides upward in the vertical direction, the SF6 gas in the gas storage cavity 41 can enter the inflation member 49 for release operation in the arc extinguishing chamber.

[0068] It should be noted that the first electromagnetic valve 411 and the second electromagnetic valve 412 herein are both prior art, and the gas supply pipeline 414 herein is generally provided as a rubber hose to be suitable for different circuit breaker installation cabinets.

[0069] Further specifically, as shown in Figure 2 , Figure 5 The adjusting assembly 46 includes two groups of screw rods 462 screwed in the vertical state on the bottom plate 47, a limiting block 461 located at the top end of the screw rod 462 and rotated in the inside of the Z-shaped sliding plate 45, and a rotating block 463 located at the bottom end of the screw rod 462.

[0070] During use, the rotating block 463 is used to control the rotation of the screw rod 462 on the bottom plate 47, so as to control the lifting movement of the Z-shaped sliding plate 45 inside the sliding groove 44, facilitate the adjustment of the sliding length of the piston plate 42 in the gas storage cavity 41, and thus facilitate the further control of the inflation amount of the SF6 gas into the arc extinguishing chamber by the protection structure 4.

[0071] The Z-shaped sliding plate 45 is provided with a contact button 451 on the upper surface, and when the upper surface of one end of the Z-shaped sliding plate 45 contacts the device housing 1, the lower space of the piston plate 42 is sealed, so that the piston plate 42 cannot move up and down, and the contact button 451 is electrically connected with the monitoring host 2 to remotely remind the user that the inflation operation has been completed.

[0072] Further specifically, as shown in Figure 2 , Figure 4 , Figure 5 The driving member 48 includes a positioning plate 481 mounted on the sidewall of the device housing 1, an insertion rod 482 sliding through the positioning plate 481 in the vertical state for being mounted on the bottom plate 47, a connecting top plate 484 for being connected and fixed at the top end of the insertion rod 482, and a spring 483 sleeved outside the insertion rod 482 and connected with the bottom plate 47 and the positioning plate 481 at both ends.

[0073] When the first electromagnetic valve 411 and the second electromagnetic valve 412 are both opened, and the gas pipeline 414 and the opening 413 are both in the communication state, the piston plate 42 can move upward, and at this time, the spring 483 can drive the bottom plate 47 to move upward through the plug plate 43 and the piston plate 42.

[0074] It should be further pointed out that, as shown in the figure, Figure 6 The gas charging member 49 includes a sealed shell 491 located in the arc extinguishing chamber of the circuit breaker mechanism, a gas charging connecting port 492 arranged on the sealed shell 491, and a one-way valve 493 located on the gas charging connecting port 492 for air inside the sealed shell 491 to be delivered to the arc extinguishing chamber.

[0075] In use, the SF6 gas in the gas storage cavity 41 is moved upward by the piston plate 42, so as to be delivered into the sealed shell 491 through the gas pipeline 414 by air pressure, and then delivered into the arc extinguishing chamber through the one-way valve 493 and the gas charging connecting port 492.

[0076] Therefore, the driving member 48 can further include a connecting rod 485 mounted on the connecting top plate 484, a sliding piston 486 located at the bottom of the connecting rod 485, and a limiting sleeve 487 arranged on the positioning plate 481 for the sliding piston 486 to slide inside.

[0077] And since the gas pipeline 414 is used for the communication between the inside of the sealed shell 491 and the inside of the gas storage cavity 41, the gas pipeline 414 is also used for the communication between the inside of the sealed shell 491 and the space at the bottom of the sliding piston 486 inside the limiting sleeve 487.

[0078] Therefore, when the driving member 48 controls the bottom plate 47 to drive the plug plate 43 and the piston plate 42 to slide upward along the vertical direction to release the SF6 gas inside the arc extinguishing chamber, and the sliding piston 486 also moves upward, a part of the gas inside the gas charging member 49 is delivered into the space below the sliding piston 486 through the gas pipeline 414, so that part of the SF6 gas can enter the limiting sleeve 487 to be stored at the bottom of the sliding piston 486, thereby facilitating the use of the part of the gas to further detect the leakage of the SF6 gas molecules stored in the gas storage cavity 41, and enabling timely repair when the gas storage cavity 41 is in a leakage and damage state.

[0079] More specifically, the sensor assembly 6 includes a protective shell 61, and the protective shell 61 is internally arranged with any one of a temperature monitoring sensor 63, a current Hall sensor 64, a posture sensor 65, and a transient sensor 66, and all are connected with the monitoring host 2 through a connecting line 62.

[0080] Among them, as shown in the figure, Figure 1 and Figure 4As shown, the connecting assembly 5 includes a plurality of groups of terminal ports 51 provided on the device housing 1 for connecting the monitoring host 2, an adjusting slide rail 52 provided on the device housing 1 at the positions of the terminal ports 51, and a plurality of groups of wire assembly 53 slidingly provided on the adjusting slide rail 52 for connecting the wires 62 and being installed in line.

[0081] Therefore, in specific use, after the current Hall sensor 64 senses that the current amount exceeds a certain value, the first electromagnetic valve 411 of the protection structure 4 is opened to allow the gas pipeline 414 to be in a connected state, and when the temperature monitoring sensor 63 probe sensing contact temperature suddenly rises due to disconnection and separation, the second electromagnetic valve 412 is opened to allow the openings 413 to be in a connected state, so that the driving member 48 can quickly release SF6 gas to reduce and eliminate the arc in the arc extinguishing chamber to protect the overall circuit and structure.

[0082] Further specifically, as shown, Figure 7 The monitoring host 2 is internally provided with a monitoring unit 21, a threshold preset unit 22, a model calculation unit 23, a data analysis processing unit 24, and a data transmission unit 25, wherein:

[0083] The monitoring unit 21 is used to extract corresponding waveform features through current size changes and action time;

[0084] The threshold preset unit 22 is used to preset the alarm threshold of the breaker contact arm temperature;

[0085] The model calculation unit 23 is used to obtain a mathematical model through the data fitting function of the posture sensor 65 and the transient sensor 66 collected multiple times;

[0086] The data analysis processing unit 24 is used to calculate corresponding breaker mechanical characteristic parameters using the mathematical model through the motion curve of the breaker mechanism;

[0087] The data transmission unit 25 is used to further control the electrical connection between the monitoring host 2 and the sensor assembly 6 through the connection of the control terminal port 51.

[0088] Therefore, the sensor assembly 6 is used for sensing and monitoring, and the monitoring host 2 is used for analyzing and obtaining the electrical parameters (such as energy storage time, energy storage current, and action current of the opening and closing coil) and mechanical characteristic parameters (such as breaker stroke, breaker opening and closing time, breaker average opening and closing speed, contact opening distance, and contact working pressure) of the breaker energy storage motor, which facilitates the analysis of the characteristics of each operating mechanism, the early discovery of malfunction signs and mechanical life judgment, and the timely issuance of an alarm. At the same time, the collected data can be compared in multiple dimensions to perform mathematical modeling, real-time prediction of breaker electrical life, and realization of the whole life cycle management of high-voltage breakers.

[0089] Therefore, the monitoring host 2 can perform system operations as follows:

[0090] According to the temperature monitoring sensor 63, the temperature of the circuit breaker contact arm is collected, the linear relationship between temperature rise and load current is used, and the preset alarm threshold is used to make a reminder to predict the potential hazards of the main circuit in advance;

[0091] According to the current Hall sensor 64, the current and action time of the on-off coil are collected, the waveform characteristics of the current curve are extracted through the monitoring unit 21, early faults of the equipment are identified, and safe operation is ensured;

[0092] According to the posture sensor 65 and the transient sensor 66, the motion curve of the circuit breaker mechanism is extracted, the mechanical characteristic parameters of the circuit breaker are calculated by using the mathematical model, the health status of the circuit breaker is intuitively quantified, and the early faults of the mechanical components are identified;

[0093] According to the current Hall sensor 64, the segmented current of the vacuum circuit breaker is collected, the number of electrical operations under the remaining rated current after operation is determined, and the residual electrical life monitoring of the circuit breaker is realized;

[0094] According to the circuit breaker contact arm temperature, the current and action time of the on-off coil, the mechanical characteristic parameters and other data, AI analysis is carried out or uploaded to the cloud for manual processing and analysis.

[0095] The above only describes the preferred embodiments of the present application and does not limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0096] In addition, it needs to be explained that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0097] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B scheme. In addition, in the embodiments of the present application, "a plurality of" means more than two. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of such technical solutions does not exist, nor is it within the scope of protection required by the present application.

Claims

1. A circuit breaker operation monitoring and control device, installed inside the mounting cabinet of the circuit breaker mechanism, characterized in that, include: The device housing (1) has a monitoring host (2) inside, which is used to connect to the sensor assembly (6) via the connection component (5); The sensor assembly (6) has multiple sets, all of which are installed on the circuit breaker mechanism, for monitoring the operating status of the circuit breaker mechanism; The mounting structure (3) is set on the outer shell (1) of the device and is used to install the outer shell (1) of the device at any part of the cabinet; The protective structure (4) is installed on the outer shell (1) of the device and connected to the circuit breaker mechanism. It is used to control the release of SF6 gas into the arc-extinguishing chamber when the circuit breaker mechanism breaks the circuit, and at the same time collects part of the released SF6 gas to facilitate the inspection of SF6 gas quality. The protective structure (4) includes an air storage cavity (41) disposed inside the device housing (1), a piston plate (42) that slides vertically in the air storage cavity (41), an insert plate (43) disposed at the bottom of the piston plate (42) and moving through the device housing (1) with the piston plate (42), a sliding groove (44) opened on the insert plate (43), a Z-shaped sliding plate (45) that slides vertically in the sliding groove (44), and a bottom plate (47) located at the bottom of the insert plate (43). An adjustment assembly (46) installed on the base plate (47) for adjusting and controlling the sliding of the Z-shaped sliding plate (45) in the sliding groove (44); a drive component (48) installed on the outer casing (1) for driving the base plate (47) to drive the insert plate (43) and piston plate (42) to slide upward in the vertical direction; and an inflation component (49) installed in the arc-extinguishing chamber of the circuit breaker mechanism and connected to the gas storage cavity (41) for controlling the release of SF6 gas into the arc-extinguishing chamber during the upward sliding of the piston plate (42). The gas storage cavity (41) is provided with a gas supply line (414) on its side wall for connecting the inflation component (49), and the device housing (1) is also provided with a first solenoid valve (411) connected to the gas supply line (414) for controlling the gas supply line (414) to communicate with the gas storage cavity (41). The gas storage cavity (41) is provided with an opening (413) at its bottom, and a second solenoid valve (412) is provided at the opening (413) for controlling the bottom of the gas storage cavity (41) to communicate with the outside of the device housing (1). The adjustment assembly (46) includes two sets of screws (462) that rotate on the base plate (47) in a vertical state, a limiting block (461) located at the top of the screws (462) and rotating inside the Z-shaped sliding plate (45), and a rotating block (463) located at the bottom of the screws (462). A contact button (451) is provided on the upper surface of the Z-shaped sliding plate (45). When the upper surface of one end of the Z-shaped sliding plate (45) is in contact with the outer shell (1) of the device, the lower space of the piston plate (42) is sealed, and the contact button (451) is electrically connected to the monitoring host (2).

2. The circuit breaker operation monitoring and control device as described in claim 1, characterized in that, The mounting structure (3) includes a grid plate (31), mounting plates (32) located at both ends of the grid plate (31), fixing bolts (33) on the mounting plate (32) for mounting inside the cabinet, and multiple sets of snap-fit ​​fasteners (34) on the outer casing (1) for mounting at any part of the grid plate (31), wherein: The locking fastener (34) consists of an inverted J-shaped elastic block (341), a semi-circular protrusion (342) installed at the bottom of the inverted J-shaped elastic block (341), and an arc-shaped protrusion (343) installed at the top of the inverted J-shaped elastic block (341).

3. The circuit breaker operation monitoring and control device as described in claim 1, characterized in that, The driving component (48) includes a positioning plate (481) installed on the side wall of the device housing (1), a plug rod (482) that slides through the positioning plate (481) in a vertical state for installation on the base plate (47), a connecting top plate (484) for connecting and fixing the top end of the plug rod (482), and a spring (483) sleeved on the outside of the plug rod (482) and connected at both ends to the base plate (47) and the positioning plate (481) respectively.

4. The circuit breaker operation monitoring and control device as described in claim 1, characterized in that, The drive unit (48) also includes a connecting rod (485) mounted on the connecting top plate (484), a sliding piston (486) located at the bottom of the connecting rod (485), and a limiting sleeve (487) provided on the positioning plate (481) for the sliding piston (486) to slide inside. The inflation component (49) includes a sealed housing (491) located in the arc-extinguishing chamber of the circuit breaker mechanism, an inflation port (492) provided on the sealed housing (491), and a one-way valve (493) located on the inflation port (492) for supplying air from inside the sealed housing (491) to the arc-extinguishing chamber. The gas pipeline (414) is used to seal the interior of the outer shell (491) and the interior of the gas storage cavity (41). The gas pipeline (414) is also used to seal the interior of the outer shell (491) and the space located at the bottom of the sliding piston (486) inside the limiting sleeve (487).

5. The circuit breaker operation monitoring and control device as described in claim 1, characterized in that, The sensor assembly (6) includes a protective housing (61), inside which is installed any one of a temperature monitoring sensor (63), a current Hall sensor (64), an attitude sensor (65), and a transient sensor (66), all of which are connected to the monitoring host (2) via a connection line (62). The connection assembly (5) includes multiple sets of wiring ports (51) on the device housing for connecting the monitoring host, an adjustment slide rail (52) on the device housing and located at the wiring port (51), and multiple sets of wire harness assemblies (53) slidably mounted on the adjustment slide rail (52) for connecting the line (62) and installing in parallel.

6. The circuit breaker operation monitoring and control device as described in claim 5, characterized in that, The monitoring host (2) is internally equipped with a monitoring unit (21), a threshold preset unit (22), a model calculation unit (23), a data analysis and processing unit (24), and a data transmission unit (25), wherein: The monitoring unit (21) is used to extract the corresponding waveform features by measuring the change in current magnitude and the action time. Threshold preset unit (22) is used to preset the alarm threshold of the circuit breaker contact arm temperature; The model calculation unit (23) is used to obtain a mathematical model by fitting a function to the data collected multiple times by the attitude sensor (65) and the transient sensor (66); The data analysis and processing unit (24) is used to calculate the corresponding mechanical characteristic parameters of the circuit breaker using a mathematical model based on the motion curve of the circuit breaker mechanism. The data transmission unit (25) is used to further control the electrical connection between the monitoring host (2) and the sensor assembly (6) by controlling the connection of the control wiring port (51).

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