A high voltage circuit breaker fault simulation device and simulation method

Abstract

The present invention provides a high-voltage circuit breaker fault simulation device and a simulation method. The simulation device comprises a bracket, a high-voltage circuit breaker to be tested is installed above the bracket, the high-voltage circuit breaker to be tested realizes opening and closing actions through an operating mechanism, the operating mechanism is placed in the bracket, and the device further comprises: a performance test component, a damping device and a spring adjustment device, the damping device is installed on a transmission component of the operating mechanism, the spring adjustment device is installed below the operating mechanism and abuts against the bottom of the operating mechanism, and the performance test component is installed on the operating mechanism; the present invention realizes the simulation of faults such as oil leakage of a high-voltage circuit breaker buffer, mechanical blocking, and spring fatigue of the operating mechanism, and can measure the mechanical characteristics of the high-voltage circuit breaker under a fault state through an external circuit breaker characteristic analyzer, a vibration collector, a stress collector, and the like.

Description

Technical Field

[0001] The invention relates to the field of high-voltage electrical appliances, and in particular to a high-voltage circuit breaker fault simulation device and a simulation method. Background Art

[0002] High-voltage circuit breakers have a complex structure and a harsh working environment. At present, when a circuit breaker fails, it is difficult to find the specific fault situation and cause of the fault. Therefore, it is necessary to test the mechanical characteristics of the circuit breaker under various common fault conditions and find out the cause of the fault by comparing the mechanical characteristics with the circuit breaker that has failed on site. Therefore, engineers check each component of the faulty circuit breaker one by one, which takes a long time and is inefficient. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides a high-voltage circuit breaker fault simulation device, which can solve the problem of low efficiency in finding fault conditions and causes when a circuit breaker fails.

[0004] Technical solution: The present invention provides a high-voltage circuit breaker fault simulation device, comprising a bracket, a high-voltage circuit breaker to be tested is installed above the bracket, the high-voltage circuit breaker to be tested realizes opening and closing actions through an operating mechanism, the operating mechanism is placed in the bracket, the device also includes: a performance test component, a damping device and a spring adjustment device, the damping device is installed on the transmission component of the operating mechanism, the spring adjustment device is installed below the operating mechanism and abuts against the bottom of the operating mechanism, and the performance test component is installed on the operating mechanism.

[0005] Further, including:

[0006] The transmission assembly comprises a first rotating shaft, a transmission connecting rod and a second rotating shaft, and both ends of the transmission connecting rod are rotatably connected to one end of the first rotating shaft and the second rotating shaft respectively.

[0007] Further, including:

[0008] The damping device includes two, which are denoted as a first damping device and a second damping device. The first damping device is installed on the first rotating shaft, and the second damping device is installed on the second rotating shaft.

[0009] Further, including:

[0010] The simulation device also includes an adjustable buffer, which is installed at one end of the operating mechanism and connected to the spring adjustment device.

[0011] Further, including:

[0012] An oil outlet valve is installed on one side of the adjustable buffer.

[0013] Further, including:

[0014] The first damping device includes a first damping push rod, a first damping pressure block and an elastic member. The first damping push rod includes a thin end and a thick end connected to each other. The thin end is inserted into the accommodating space of the first damping pressure block. The elastic member includes two elastic members, which are symmetrically arranged on the upper and lower sides of the thin end in the first damping pressure block. One end of the elastic member is fixed at the connection between the thin end and the thick end.

[0015] Further, including:

[0016] The spring adjustment device includes an upper adjustment plate, a screw rod and a lower adjustment plate. The screw rod includes two screw rods, which are symmetrically installed on both sides of the lower end surface of the upper adjustment plate, and one end of the screw rod abuts against the lower end surface of the upper adjustment plate, and the other end passes through the lower adjustment plate. The upper end surface of the upper adjustment plate is fixedly installed with a closing and opening spring.

[0017] Further, including:

[0018] The lower adjusting plate is provided with a through hole, and the screw rod penetrates the lower adjusting plate through the through hole.

[0019] Further, including:

[0020] The performance test assembly includes an acceleration sensor, a strain sensor and a vibration sensor. The acceleration sensor and the strain sensor are both installed on the transmission connecting rod, and the vibration sensor is installed on the transmission assembly.

[0021] The present invention also provides a high-voltage circuit breaker fault simulation method, based on the above-mentioned simulation device, the method comprises:

[0022] Start the high-voltage circuit breaker and the operating mechanism works;

[0023] The performance test component detects the speed, force and deformation of the operating mechanism;

[0024] The damping device applies resistance to simulate jamming and detect the jamming resistance of the operating mechanism;

[0025] Adjust the spring adjustment device to test the fatigue resistance of the opening and closing springs;

[0026] Turn off the performance test assembly, damping device and spring adjustment device, and shut down the high-voltage circuit breaker.

[0027] Beneficial effects: The present invention realizes the simulation of faults such as oil leakage of high-voltage circuit breaker buffer, mechanical jamming, spring fatigue of operating mechanism, etc., and can measure the mechanical characteristics of the high-voltage circuit breaker under fault state through external circuit breaker characteristic analyzer, vibration collector and stress collector and other equipment. It has the advantages of simple structure, easy operation and convenient measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a cross-sectional view of the high-voltage circuit breaker fault simulation device of the present invention;

[0029] Figure 2 It is a partial structural schematic diagram of the spring adjustment device of the present invention;

[0030] Figure 3 Schematic diagram of the damping device of the present invention.

[0031] The figure includes: a bracket 1, a performance test component 2, an acceleration sensor 21, a strain sensor 22, a vibration sensor 23, a damping device 4, a first damping device 41, a first damping top rod 411, a thin end 4111, a thick end 4112, a first damping pressure block 412, an elastic member 413, a second damping device 42, a spring adjustment device 5, an upper adjustment plate 51, a screw 52, ​​a lower adjustment plate 53, a through hole 531, an operating mechanism 10, a transmission component 101, a first rotating shaft 1011, a transmission connecting rod 1012, a second rotating shaft 1013, a closing and opening spring 102, and an adjustable buffer 103. DETAILED DESCRIPTION

[0032] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the specific implementation method of the present invention is further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1 The present invention provides a high-voltage circuit breaker fault simulation device, including a bracket 1, which can be a frame-type structure containing an operating mechanism 10. The high-voltage circuit breaker to be tested is installed above the bracket 1. The high-voltage circuit breaker to be tested realizes opening and closing actions through the operating mechanism 10, and the operating mechanism 10 is placed in the bracket 1.

[0034] The circuit breaker adopts a high-voltage circuit breaker that is more common on the market. Its operating mechanism 10 generally includes a transmission component 101, a closing and opening spring 102 and an adjustable buffer 103. The transmission component 101 includes a first rotating shaft 1011, a transmission connecting rod 1012 and a second rotating shaft 1013. The two ends of the transmission connecting rod 1012 are rotatably connected to one end of the first rotating shaft 1011 and the second rotating shaft 1013 respectively. The adjustable buffer 103 is installed at one end of the operating mechanism 10 and is connected to the spring adjustment device 5.

[0035] Furthermore, an oil outlet valve 1031 is installed on one side of the adjustable buffer 103. The oil outlet valve 1031 is adjusted to release the hydraulic oil, thereby gradually reducing the hydraulic oil inside the buffer, simulating a buffer oil leakage failure, and measuring the mechanical characteristics of the circuit breaker under different leakage conditions. The buffer oil leakage failure refers to a failure caused by the hydraulic oil inside the buffer leaking, resulting in the buffer losing its function.

[0036] Furthermore, the device also includes: a performance testing component 2, a damping device 4 and a spring adjustment device 5, the damping device 4 is installed on the transmission component 101 of the operating mechanism 10, the spring adjustment device 5 is installed below the operating mechanism 10 and abuts against the bottom of the operating mechanism 10, and the performance testing component 2 is installed on the operating mechanism 10.

[0037] The damping device 4 includes two, denoted as a first damping device 41 and a second damping device 42. The first damping device 41 is installed on the first rotating shaft 1011, and the second damping device 42 is installed on the second rotating shaft 1013. The adjustable buffer 103 is connected to the second rotating shaft 1013, and then in the stage where the buffer 103 absorbs energy, resistance can be applied by the second damping device 42 to simulate the jamming of the transmission component 101.

[0038] The first damping device 41 is installed on the first rotating shaft 1011, and the first rotating shaft 1011 is in transmission connection with the opening and closing spring 102. Therefore, when the opening and closing spring 102 outputs force through the first rotating shaft 1011, the first damping device 41 can apply resistance to simulate the jamming of the transmission component 101.

[0039] Further, in this embodiment, if Figure 3 As shown, the first damping device 41 includes a first damping push rod 411, a first damping pressure block 412 and an elastic member 413. The first damping push rod 411 includes a thin end 4111 and a thick end 4112 connected to each other. The thin end 4111 is inserted into the accommodation space of the first damping pressure block 412. The elastic member 413 includes two parts, which are symmetrically arranged on the upper and lower sides of the thin end 4111 in the first damping pressure block 412. One end of the elastic member 413 is fixed at the connection between the thin end 4111 and the thick end 4112. A nut is arranged on the first damping pressure block 412. By adjusting the nut on the pressure block, the pressure of the elastic member 413 is adjusted, thereby adjusting the magnitude of the damping force applied. The second damping device has the same structure as the first damping device, and the present invention will not be repeated here.

[0040] In this embodiment, the elastic member 413 can be configured as a spring.

[0041] Further, in this embodiment, if Figure 2As shown, the spring adjustment device 5 includes an upper adjustment plate 51, a screw rod 52 and a lower adjustment plate 53. The screw rod 52 includes two screw rods 52, which are symmetrically installed on both sides of the lower end surface of the upper adjustment plate 51, and one end of the screw rod 52 abuts against the lower end surface of the upper adjustment plate 51, and the other end passes through the lower adjustment plate 53. The upper end surface of the upper adjustment plate is fixedly installed with the opening and closing spring 102. The lower adjustment plate 53 is provided with a through hole 531, and the screw rod 52 penetrates the lower adjustment plate 53 through the through hole 531 and is installed and connected.

[0042] The screw rod 52 is screwed in or out to a certain depth. The end of the screw rod 52 is directly pressed on the opening and closing spring through the upper adjusting plate 51, thereby adjusting the compression amount of the opening and closing spring. The size of the compression amount directly affects the output force of the spring. Adjusting the compression amount can simulate the fatigue failure of the spring and measure the mechanical characteristics under different looseness.

[0043] The performance test component 2 includes an acceleration sensor 21, a strain sensor 22 and a vibration sensor 23. The acceleration sensor 21 and the strain sensor 22 are both installed on the transmission connecting rod 1012, and the vibration sensor is installed on the transmission component 101. The present invention does not limit the specific position of the vibration sensor, and it can be flexibly arranged as long as it is installed on the operating mechanism 10 of the action.

[0044] An accelerometer is a sensor that can measure acceleration. It is usually composed of a mass block, a damper, an elastic element, a sensitive element, and an adjustment circuit. During the acceleration process, the sensor measures the inertial force on the mass block and uses Newton's second law to obtain the acceleration value.

[0045] Strain sensors are sensors that measure the strain generated by an object's deformation under force. The most commonly used sensing element is the resistance strain gauge, which is a sensing element that can convert the change in strain on a mechanical component into a change in resistance.

[0046] Vibration sensors are sensors used to detect impact force or acceleration. They usually use piezoelectric devices that generate electric charge when stress is applied. There are also sensors that use other materials and methods to perform detection.

[0047] The mechanical characteristics of the high-voltage circuit breaker under fault state are measured by external circuit breaker characteristic analyzer, vibration collector and stress collector equipment, which has the advantages of simple structure, easy operation and convenient measurement.

[0048] The present invention further provides a fault simulation method based on the above fault simulation device, comprising:

[0049] First, the high voltage circuit breaker is started and the operating mechanism 10 works;

[0050] Secondly, the performance test component 2 detects the speed, force and deformation of the operating mechanism 10;

[0051] The damping device 4 applies resistance to simulate a jam, thereby detecting the availability of the operating mechanism 10;

[0052] Adjust the spring adjustment device 5 to detect the fatigue resistance of the opening and closing spring 102, and use the oil outlet valve to simulate the oil leakage fault of the adjustable buffer;

[0053] Finally, the performance test assembly 2, the damping device 4, the spring adjustment device 5 and the oil outlet valve 1031 are closed, and the high-voltage circuit breaker is shut down.

[0054] The present invention does not limit the working sequence of the performance test assembly 2, the damping device 4, the spring adjustment device and the oil outlet valve, and can perform simulation testing on the circuit breaker at the same time, or can perform simulation testing separately or in combination.

[0055] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A high-voltage circuit breaker fault simulation device, comprising a bracket (1), a high-voltage circuit breaker to be tested is mounted above the bracket (1), the high-voltage circuit breaker to be tested realizes opening and closing actions through an operating mechanism (10), the operating mechanism is placed in the bracket (1), and is characterized in that: The device further comprises: a performance test assembly (2), a damping device (4) and a spring adjustment device (5), wherein the damping device (4) is mounted on a transmission assembly (101) of an operating mechanism (10), the spring adjustment device (5) is mounted below the operating mechanism (10) and abuts against the bottom of the operating mechanism, and the performance test assembly (2) is mounted on the operating mechanism (10); The transmission assembly (101) comprises a first rotating shaft (1011), a transmission connecting rod (1012) and a second rotating shaft (1013); two ends of the transmission connecting rod (1012) are rotatably connected to one end of the first rotating shaft (1011) and one end of the second rotating shaft (1013); The damping device (4) comprises two, denoted as a first damping device (41) and a second damping device (42), the first damping device (41) being mounted on the first rotating shaft (1011), and the second damping device (42) being mounted on the second rotating shaft (1013); The spring adjustment device (5) comprises an upper adjustment plate (51), a screw rod (52) and a lower adjustment plate (53); the screw rod (52) comprises two screw rods, which are symmetrically mounted on both sides of the lower end surface of the upper adjustment plate (51); one end of the screw rod (52) abuts against the lower end surface of the upper adjustment plate, and the other end passes through the lower adjustment plate (53); the upper end surface of the upper adjustment plate is fixedly mounted with a closing and opening spring (102).

2. The high voltage circuit breaker fault simulation device according to claim 1, characterized in that: The performance test assembly (2) comprises an acceleration sensor (21), a strain sensor (22) and a vibration sensor (23); the acceleration sensor and the strain sensor are both mounted on a transmission connecting rod (1012); and the vibration sensor is mounted on the transmission assembly (101).

3. The high voltage circuit breaker fault simulation device according to claim 1, characterized in that: The first damping device (41) comprises a first damping push rod (411), a first damping pressure block (412) and an elastic member (413); the first damping push rod (411) comprises a thin end (4111) and a thick end (4112) connected to each other; the thin end (4111) is inserted into a receiving space of the first damping pressure block (412); the elastic member (413) comprises two pieces, which are symmetrically arranged at the upper and lower sides of the thin end (4111) in the first damping pressure block (412); one end of the elastic member (413) is fixed at the connection between the thin end (4111) and the thick end (4112).

4. The high voltage circuit breaker fault simulation device according to claim 1, characterized in that: The simulation device also includes an adjustable buffer (103), which is installed at one end of the operating mechanism (10) and connected to the spring adjustment device (5).

5. The high voltage circuit breaker fault simulation device according to claim 4, characterized in that: An oil outlet valve (1031) is installed on one side of the adjustable buffer (103).

6. The high voltage circuit breaker fault simulation device according to claim 1, characterized in that: The lower adjustment plate (53) is provided with a through hole (531), and the screw rod (52) penetrates the lower adjustment plate (53) through the through hole (531).

7. A high-voltage circuit breaker fault simulation method, based on the simulation device according to any one of claims 1 to 6, characterized in that: The method includes: The high-voltage circuit breaker is started, and the operating mechanism (10) works; The performance testing component (2) detects the speed, force and deformation of the operating mechanism (10) and records them; The damping device (4) applies resistance to simulate jamming, detects the jamming resistance of the operating mechanism (10), and records the resistance; Adjusting the spring adjustment device (5) to detect the fatigue resistance of the opening and closing spring (102) and record the result; The performance test assembly (2), the damping device (4) and the spring adjustment device (5) are closed, and the high-voltage circuit breaker is shut down.

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