Electrical lock for electrical maintenance of power plant

Abstract

The invention provides an electrical lock for electrical maintenance of a power plant, and relates to the technical field of electrical equipment.The electrical lock comprises a fixed seat, a sliding groove is formed in the surface of the fixed seat, an adjusting sliding seat is horizontally and slidably connected to the inner wall of the sliding groove, and transmission assemblies are symmetrically arranged on the two sides of the adjusting sliding seat; one end of the transmission assembly penetrates through the side wall of the sliding groove and then is fixedly connected with the side wall of the adjusting sliding seat, the guide seats are symmetrically and fixedly connected to the two sides of the fixed seat, the rotating arm mechanisms are arranged on the side faces of the guide seats, and one end of each rotating arm mechanism is connected with the end, penetrating through the side wall of the fixed seat, of the transmission assembly. One end of the limiting mechanism contacts with the inner wall of the chute. According to the invention, the two groups of handle switches can be driven to move reversely only by simply translating and adjusting the sliding seat, so that the two circuit breakers are always kept in opposite states, and the misoperation risk is effectively reduced; and meanwhile, the limiting mechanism arranged on the device can be fixed when the adjusting sliding seat stops, the overall operation is simple, convenient and safe, and the use requirements are completely met.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical equipment, and particularly relates to an electrical interlock for electrical maintenance in a power plant. Background Art

[0002] Electrical interlock refers to the interlocking among various electrical equipment such as circuit breakers, switches, and cabinet doors in a power system. Installing corresponding anti-misoperation electrical interlock circuits can greatly reduce the misoperation of electrical equipment, thereby improving safety. When performing maintenance on distribution facilities such as distribution boxes and distribution cabinets, in order to achieve interlock protection, it is necessary to avoid the parallel operation of two circuit breakers. At this time, it is necessary to operate the switches of the two circuit breakers separately to make the states of the two circuit breakers different. However, over time, there is a possibility of misoperation, which increases the complexity and danger of operation and does not meet the usage requirements. Therefore, there is an urgent need to design an electrical interlock for electrical maintenance in a power plant to solve the above problems. Summary of the Invention

[0003] The present invention provides an electrical interlock for electrical maintenance in a power plant to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention discloses an electrical interlock for electrical maintenance in a power plant, including: a fixed seat, a chute is provided on the surface of the fixed seat, an adjusting sliding seat is horizontally slidably connected to the inner wall of the chute, transmission components are symmetrically arranged on both sides of the adjusting sliding seat, one end of the transmission component penetrates through the side wall of the chute and is fixedly connected to the side wall of the adjusting sliding seat, guiding seats are symmetrically and fixedly connected to both sides of the fixed seat, a rotating arm mechanism is arranged on the side of the guiding seat, one end of the rotating arm mechanism is connected to the end of the transmission component penetrating through the side wall of the fixed seat, a limiting mechanism is arranged on the side of the adjusting sliding seat, and one end of the limiting mechanism contacts the inner wall of the chute.

[0005] Preferably, it further includes a circuit breaker, one end of the rotating arm mechanism is slidably connected to the outer side wall of the circuit breaker and contacts the surface of the handle switch on the circuit breaker.

[0006] Preferably, the transmission component includes a rotating cylinder, the rotating cylinder is rotatably connected in the fixed seat, a transmission rod is slidably connected to the inner wall of the rotating cylinder, one end of the transmission rod penetrates through the side wall of the chute and is fixedly connected to the side wall of the adjusting sliding seat, the other end of the transmission rod located inside the rotating cylinder is fixedly connected with a convex shaft, a spiral guide groove is provided on the inner wall of the rotating cylinder, one end of the convex shaft is located inside the spiral guide groove, and the convex shaft is slidably connected to the inner wall of the spiral guide groove, a transmission sleeve rod is fixedly connected to the surface of the rotating cylinder, one end of the transmission sleeve rod penetrates through the side wall of the fixed seat and is connected to one side of the rotating arm mechanism, and the two groups of convex shafts drive the two groups of rotating cylinders to rotate in opposite directions.

[0007] Preferably, an arc-shaped guide groove is formed at a position on the surface of the guide seat corresponding to the position of the circuit breaker.

[0008] Preferably, the swing arm mechanism includes a swing arm, the swing arm is rotatably connected to a surface of the guide seat close to the fixed seat, a transmission inner rod is fixedly connected to a side wall of the swing arm, and the transmission inner rod is slidably connected to an inner wall of one end of a transmission sleeve rod. A shift lever is slidably connected in the arc-shaped guide groove. One end of the shift lever is fixedly connected to a side wall of the swing arm away from the transmission inner rod, the other end of the shift lever is slidably connected to the surface of the circuit breaker, and the other end of the shift lever is sleeved outside a handle switch on the circuit breaker.

[0009] Preferably, the limiting mechanism includes a threaded cylinder, the threaded cylinder is threadedly connected to a side wall of the adjusting sliding seat, a push rod is slidably connected in the threaded cylinder, and a spring is fixedly connected between the push rod and the inner wall of the threaded cylinder. One end of the push rod penetrates through the side wall of the threaded cylinder and is fixedly connected to a ball seat, the other end of the push rod penetrates through the side wall of the threaded cylinder and is fixedly connected to an abutting plate, and the abutting plate is fixedly connected to the inner wall of the sliding groove in an abutting manner.

[0010] Preferably, an anti-slip pattern is provided on a surface of the abutting plate close to the inner wall of the sliding groove, and a strip-shaped groove for facilitating the sliding of one end of the push rod is formed in the inner wall of the sliding groove.

[0011] Preferably, a flat key and a flat key groove are respectively provided at positions on the surface of the transmission inner rod and the inner wall of the transmission sleeve rod corresponding to each other, and the flat key is slidably connected in the flat key groove.

[0012] Preferably, it further includes a circuit breaker detection device for detecting the working state of the circuit breaker in the electrical interlock for power plant electrical maintenance. The circuit breaker detection device includes: An ion-selective electrode sensor for detecting the concentration of ions after an arc is generated inside the circuit breaker during operation; A speed sensor for detecting the speed of ions after an arc is generated inside the circuit breaker during operation; A high-voltage probe sensor for detecting the voltage of the arc generated inside the circuit breaker during operation; A temperature sensor for detecting the temperature after an arc is generated inside the circuit breaker during operation; A controller and an alarm. The controller is electrically connected to the ion-selective electrode sensor, the speed sensor, the high-voltage probe sensor, the temperature sensor and the alarm, and the controller controls the alarm to work based on the ion-selective electrode sensor, the speed sensor, the high-voltage probe sensor and the temperature sensor.

[0013] Preferably, the controller controls the alarm based on the ion-selective electrode sensor, speed sensor, high-voltage probe sensor, and temperature sensor, including: According to the formula and the detection values of the ion-selective electrode sensor, speed sensor, high-voltage probe sensor, and temperature sensor, calculate the actual current amplitude during the operation of the circuit breaker for electrical interlock in power plant electrical maintenance , the controller compares the actual current amplitude during the operation of the current circuit breaker for electrical interlock in power plant electrical maintenance with the preset maximum allowable current amplitude. If the actual current amplitude during the operation of the current circuit breaker for electrical interlock in power plant electrical maintenance is higher than the preset maximum allowable current amplitude, the controller controls the alarm to alarm; ; Wherein, is the actual current amplitude during the operation of the circuit breaker for electrical interlock in power plant electrical maintenance, is the detection value of the ion concentration after the internal arc generation of the circuit breaker by the ion-selective electrode sensor, is the detection value of the ion velocity after the internal arc generation of the circuit breaker by the speed sensor, is the average charge multiplicity constant, is the unit charge quantity, is the magnetic induction intensity, is the metal vapor enthalpy heat, is the detection value of the arc voltage generated inside the circuit breaker by the high-voltage probe sensor, is the material density of the inner contact of the circuit breaker, is the specific heat ratio of the gas, is the ideal gas constant, is the detection value of the temperature after the internal arc generation of the circuit breaker by the temperature sensor.

[0014] An electrical interlock for power plant electrical maintenance provided by the present invention has the following beneficial effects compared with the prior art: 1. The electrical interlock for electrical maintenance in the above-mentioned power plant includes a fixed seat, an adjustable sliding seat, a transmission component, a guide seat, a swing arm mechanism, and a limit mechanism. A sliding groove is formed on the surface of the fixed seat, and the adjustable sliding seat is horizontally slidably connected to the inner wall of the sliding groove. The transmission components are symmetrically arranged inside the fixed seat, one end of the transmission component is connected to the side wall of one end of the adjustable sliding seat, the guide seats are symmetrically and fixedly connected to the side walls of the fixed seat, the swing arm mechanism is arranged on the side wall of the guide seat, and the limit mechanism is arranged on the side wall of the adjustable sliding seat. Thus, the structure of this device is reasonable. By simply translating the adjustable sliding seat, the two handle switches can be driven to move in the reverse direction, ensuring that the two circuit breakers always maintain opposite states, effectively reducing the risk of misoperation. At the same time, the equipped limit mechanism can fix the adjustable sliding seat when it stops, and the overall operation is simple and safe, fully meeting the usage requirements.

[0015] 2. Secondly, the designed arc-shaped guide groove guides and limits the stroke of the shift lever, effectively improving its stability during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic structural diagram of an electrical interlock for electrical maintenance in a power plant provided by an embodiment of the present invention; Figure 2 It is a schematic structural diagram of the sliding groove of an electrical interlock for electrical maintenance in a power plant provided by an embodiment of the present invention; Figure 3 It is a schematic structural diagram of the transmission component of an electrical interlock for electrical maintenance in a power plant provided by an embodiment of the present invention; Figure 4 It is a schematic structural diagram of the swing arm mechanism of an electrical interlock for electrical maintenance in a power plant provided by an embodiment of the present invention; Figure 5 It is a schematic structural diagram of the guide seat of an electrical interlock for electrical maintenance in a power plant provided by an embodiment of the present invention; Figure 6 It is a schematic structural diagram of the limit mechanism of an electrical interlock for electrical maintenance in a power plant provided by an embodiment of the present invention.

[0018] Reference Signs: 11. Fixed seat; 12. Adjusting sliding seat; 13. Transmission component; 14. Guide seat; 15. Rotating arm mechanism; 3. Limiting mechanism; 100. Chute; 131. Rotating cylinder; 132. Transmission rod; 133. Convex shaft; 134. Spiral guide groove; 135. Transmission sleeve rod; 141. Arc-shaped guide groove; 151. Swing arm; 152. Transmission inner rod; 153. Pushing rod; 31. Threaded cylinder; 32. Push rod; 33. Spring; 34. Ball seat; 35. Contact plate; 136. Flat key groove; 2. Circuit breaker; 21. Handle switch. Specific implementation manner

[0019] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0020] The present invention provides the following embodiments Embodiment 1 The embodiment of the present invention provides an electrical interlock for electrical maintenance in a power plant, as Figure 1 shown, including: a fixed seat 11, a chute 100 is formed on the surface of the fixed seat 11, an adjusting sliding seat 12 is horizontally slidably connected to the inner wall of the chute 100, transmission components 13 are symmetrically arranged on both sides of the adjusting sliding seat 12, one end of the transmission component 13 penetrates through the side wall of the chute 100 and is fixedly connected to the side wall of the adjusting sliding seat 12, guide seats 14 are symmetrically and fixedly connected to both sides of the fixed seat 11, a rotating arm mechanism 15 is arranged on the side of the guide seat 14, one end of the rotating arm mechanism 15 is connected to one end of the transmission component 13 penetrating through the side wall of the fixed seat 11, a limiting mechanism 3 is arranged on the side of the adjusting sliding seat 12, and one end of the limiting mechanism 3 contacts the inner wall of the chute 100.

[0021] Preferably, it further includes a circuit breaker 2, one end of the rotating arm mechanism 15 is slidably connected to the outer side wall of the circuit breaker 2 and contacts the surface of the handle switch 21 on the circuit breaker 2.

[0022] The working principle and beneficial effects of the above technical solution are: The electrical interlock for electrical maintenance of the above power plant includes a fixed seat 11, an adjusting slide seat 12, a transmission component 13, a guiding seat 14, a swing arm mechanism 15 and a limiting mechanism 3. When the adjusting slide seat 12 moves to the right, it synchronously drives the transmission component 13 on the right to reverse. The reverse rotation of the transmission component 13 on the right synchronously drives the swing arm mechanism 15 on the right to reverse, and synchronously drives the handle switch 21 on the right to close. When the adjusting slide seat 12 moves to the right, it also synchronously drives the transmission component 13 on the left to rotate forward. The forward rotation of the transmission component 13 on the left synchronously drives the swing arm mechanism 15 on the left to rotate forward, and the forward rotation of the swing arm mechanism 15 on the left synchronously drives the handle switch 21 on the left to open; when the adjusting slide seat 12 moves to the left, it synchronously drives the transmission component 13 on the left to reverse. The reverse rotation of the transmission component 13 on the left synchronously drives the swing arm mechanism 15 on the left to reverse, and synchronously drives the handle switch 21 on the left to close. When the adjusting slide seat 12 moves to the left, it also synchronously drives the transmission component 13 on the right to rotate forward. The forward rotation of the transmission component 13 on the right synchronously drives the swing arm mechanism 15 on the right to rotate forward, and the forward rotation of the swing arm mechanism 15 on the right synchronously drives the handle switch 21 on the right to open.

[0023] Through the provided limiting mechanism 3, the limiting mechanism 3 is arranged on the adjusting slide seat 12. Pressing the limiting mechanism 3 can separate one end of it from the surface of the fixed seat 11, facilitating the movement of the adjusting slide seat 12. When released, one end of the limiting mechanism 3 will abut against and fix the surface of the fixed seat 11, thereby fixing the position of the adjusting slide seat 12. The operation is simple, the practicability is strong, and the use effect is good.

[0024] Therefore, the structure of this device is reasonable. Only by simply translating the adjusting slide seat 12, the two groups of handle switches 21 can be driven to move in the reverse direction, ensuring that the two circuit breakers 2 always maintain opposite states, effectively reducing the risk of misoperation. At the same time, the equipped limiting mechanism 3 of the device can fix the adjusting slide seat 12 when it stops. The overall operation is both simple and safe, fully meeting the use requirements.

[0025] Embodiment 2 On the basis of Embodiment 1, as Figures 2 - 3As shown, the transmission assembly 13 includes a rotating cylinder 131, which is rotatably connected to the fixed seat 11, and a transmission rod 132 is slidably connected to the inner wall of the rotating cylinder 131. One end of the transmission rod 132 passes through the side wall of the slide groove 100 and is fixedly connected to the side wall of the adjusting slide seat 12. The other end of the transmission rod 132 located inside the rotating cylinder 131 is fixedly connected with a convex shaft 133. A spiral guide groove 134 is opened on the inner wall of the rotating cylinder 131. One end of the convex shaft 133 is located inside the spiral guide groove 134, and the convex shaft 133 is slidably connected to the inner wall of the spiral guide groove 134. A transmission sleeve rod 135 is fixedly connected to the surface of the rotating cylinder 131. One end of the transmission sleeve rod 135 passes through the side wall of the fixed seat 11 and is connected to one side of the rotating arm mechanism 15. The two groups of the convex shafts 133 drive the two groups of the rotating cylinders 131 to rotate in opposite directions.

[0026] The working principle and beneficial effects of the above technical solution are: The above is an explanation of the structure and connection relationship of the transmission assembly 13. When the slide 12 is adjusted to move to the right, the two groups of transmission rods 132 are synchronously driven to move on the inner walls of the two groups of rotating cylinders 131 respectively. The movement of the two groups of transmission rods 132 synchronously drives the two groups of cams 133 to move on the inner walls of the two groups of spiral guide grooves 134. The right cam 133 moves on the inner wall of the right spiral guide groove 134 and synchronously drives the right rotating cylinder 131 to reverse. The right rotating cylinder 131 reverses and the right handle switch 21 is closed. The left cam 133 moves on the inner wall of the left spiral guide groove 134 and synchronously drives the left rotating cylinder 131 to rotate forward. The left rotating cylinder 131 rotates forward and the left handle switch 21 is turned on. The transmission assembly 13 can be set to Example 3 On the basis of Example 1 or 2, Figures 4 - 5 As shown, an arc-shaped guide groove 141 is provided on the surface of the guide seat 14 at a position corresponding to the position of the circuit breaker 2 .

[0027] Preferably, the swing arm mechanism 15 includes a swing arm 151, which is rotatably connected to a side surface of the guide seat 14 close to the fixed seat 11, a transmission inner rod 152 is fixedly connected to the side wall of the swing arm 151, and the transmission inner rod is slidably connected to the inner wall of one end of the transmission sleeve rod 135, a lever 153 is slidably connected in the arc guide groove 141, one end of the lever 153 is fixedly connected to the side wall of the swing arm 151 away from one end of the transmission inner rod 152, the other end of the lever 153 is slidably connected to the surface of the circuit breaker 2, and the other end of the lever 153 is sleeved on the outside of the handle switch 21 on the circuit breaker 2.

[0028] The working principle and beneficial effects of the above technical solution are: The above-mentioned arc-shaped guide groove opened at the position on the surface of the guide seat 14 corresponding to the position of the circuit breaker 2 is designed to guide and limit the stroke of the shift lever 153 and improve its stability during operation.

[0029] Secondly, when the transmission mechanism drives the swing arm mechanism 15 to rotate, the transmission sleeve rod 135 rotates synchronously to drive the transmission inner rod 152 and the swing arm 151 to rotate. The swing arm 151 rotates synchronously to drive the shift lever 153 to move along the inner wall of the arc-shaped guide groove 141, and synchronously drives the handle switch 21 on the circuit breaker 2 to swing during the movement, thereby realizing the opening and closing operation.

[0030] Embodiment 4 On the basis of Embodiment 1, as Figures 1 - 3 and Figure 6 shown, the limiting mechanism 3 includes a threaded barrel 31, the threaded barrel 31 is threadedly connected to the side wall of the adjusting sliding seat 12, a push rod 32 is slidably connected in the threaded barrel 31, and a spring 33 is fixedly connected between the push rod 32 and the inner wall of the threaded barrel 31; one end of the push rod 32 penetrates through the side wall of the threaded barrel 31 and is fixedly connected with a ball seat 34, the other end of the push rod 32 penetrates through the side wall of the threaded barrel 31 and is fixedly connected with an abutting plate 35, and the abutting plate 35 is fixedly abutted against the inner wall of the chute 100.

[0031] Among them, preferably, a threaded hole is opened on the surface of the fixed seat 11.

[0032] Preferably, an anti-slip pattern is provided on one side surface of the abutting plate 35 close to the inner wall of the chute 100, and a strip-shaped groove for facilitating the sliding of one end of the push rod 32 is opened on the inner wall of the chute 100.

[0033] Preferably, a flat key and a flat key groove 136 are respectively provided at the positions on the surface of the transmission inner rod 152 corresponding to the inner wall of the transmission sleeve rod 135, and the flat key is slidably connected in the flat key groove 136.

[0034] The working principle and beneficial effects of the above technical solution are as follows: The structure and connection relationship of the limiting mechanism 3 are described above. When the adjusting sliding seat 12 is pushed, first press the ball seat 34 inward. The movement of the ball seat 34 synchronously drives the push rod 32 and the abutting plate 35 to move, and stretches the spring 33. The movement of the abutting plate 35 separates from the inner surface of the fixed seat 11, so as to no longer fix the position of the adjusting sliding seat 12; when the pressing of the ball seat 34 stops, under the elastic force of the spring 33, the ball seat 34, the push rod 32 and the abutting plate 35 automatically reset. After resetting, the abutting plate 35 cooperates with the spring 33 to limit the adjusting sliding seat 12 to prevent it from moving by itself, and the use effect is good.

[0035] By providing anti-slip patterns on one side surface of the abutting plate 35 close to the inner surface of the fixed seat 11, the anti-slip patterns designed on the side wall of the abutting plate 35 can effectively increase the friction force and further improve the overall stability of the limiting mechanism 3; secondly, strip-shaped grooves for facilitating the sliding of one end of the push rod 32 are formed in the inner wall of the sliding groove 100, which is convenient for the sliding of the push rod 32.

[0036] By respectively providing a flat key and a flat key groove 136 at positions on the surface of the transmission inner rod 152 corresponding to the inner wall of the transmission sleeve rod 135, the flat key is slidably connected to the inner wall of the flat key groove 136. The above-provided flat key and flat key groove 136 are convenient for connection and do not affect the transmission use at the same time, and the use effect is good.

[0037] Embodiment 5 On the basis of Embodiment 1, it further includes a circuit breaker 2 detection device for detecting the working state of the circuit breaker 2 in the electrical interlock for power plant electrical maintenance. The circuit breaker 2 detection device includes: An ion-selective electrode sensor for detecting the concentration of ions after an arc is generated inside the circuit breaker 2 during operation; A speed sensor for detecting the speed of ions after an arc is generated inside the circuit breaker 2 during operation; A high-voltage probe sensor for detecting the voltage of the arc generated inside the circuit breaker 2 during operation; A temperature sensor for detecting the temperature after an arc is generated inside the circuit breaker 2 during operation; A controller and an alarm. The controller is electrically connected to the ion-selective electrode sensor, the speed sensor, the high-voltage probe sensor, the temperature sensor and the alarm. The controller controls the alarm to work based on the ion-selective electrode sensor, the speed sensor, the high-voltage probe sensor and the temperature sensor.

[0038] Preferably, the controller controls the alarm to work based on the ion-selective electrode sensor, the speed sensor, the high-voltage probe sensor and the temperature sensor, including: According to the formula and the detection values of the ion-selective electrode sensor, the speed sensor, the high-voltage probe sensor and the temperature sensor, calculate the actual current amplitude of the circuit breaker 2 in the electrical interlock for power plant electrical maintenance during the working process , the controller compares the actual current amplitude of the current circuit breaker 2 in the electrical interlock for power plant electrical maintenance during the working process with the preset maximum allowable current amplitude. If the actual current amplitude of the current circuit breaker 2 in the electrical interlock for power plant electrical maintenance during the working process is higher than the preset maximum allowable current amplitude, the controller controls the alarm to give an alarm; ; Wherein, The actual current amplitude during the operation of the circuit breaker 2 for electrical interlocking in power plant electrical maintenance The detected value of the ion concentration after the internal arc generation during the operation of the circuit breaker 2 by the ion-selective electrode sensor The detected value of the ion velocity after the internal arc generation during the operation of the circuit breaker 2 by the velocity sensor The unit charge quantity The average charge multiplicity constant (usually with a value range of 1.3 - 1.5) The magnetic induction intensity The enthalpy of metal vapor (unit: ) The detected value of the arc voltage generated inside the circuit breaker 2 during its operation by the high-voltage probe sensor The material density of the inner contact of the circuit breaker 2 The specific heat ratio of the gas The ideal gas constant The detected value of the temperature after the internal arc generation during the operation of the circuit breaker 2 by the temperature sensor

[0039] The beneficial effects of the above technical solution are as follows: First, according to the formula and the detected values of the ion-selective electrode sensor, velocity sensor, high-voltage probe sensor, and temperature sensor, calculate the actual current amplitude during the operation of the circuit breaker 2 for electrical interlocking in power plant electrical maintenance , by comprehensively considering the ion concentration after the internal arc generation during the operation of the circuit breaker 2, the ion velocity after the internal arc generation during the operation of the circuit breaker 2, the average charge multiplicity constant, the unit charge quantity, the magnetic induction intensity, the enthalpy of metal vapor, the arc voltage generated inside the circuit breaker 2 during its operation, the material density of the inner contact of the circuit breaker 2, the specific heat ratio of the gas, the ideal gas constant, and the temperature after the internal arc generation during the operation of the circuit breaker 2, the calculation result is made more accurate and reliable

[0040] Second, the controller controls the alarm to work based on the ion-selective electrode sensor, velocity sensor, high-voltage probe sensor, and temperature sensor. If the actual current amplitude during the operation of the current circuit breaker 2 for electrical interlocking in power plant electrical maintenance When the current amplitude is higher than the preset maximum allowable value, the controller controls the alarm to sound, thus reminding the staff to promptly check the electrical interlock for power plant electrical maintenance, and maintaining the circuit breaker 2 according to the actual inspection results to meet the usage requirements of the electrical interlock for power plant electrical maintenance. At the same time, it ensures the normal operation of the overall electrical interlock for power plant electrical maintenance and the service life of the circuit breaker 2, meeting the usage requirements of the electrical interlock for power plant electrical maintenance for the reliability and stability of the circuit breaker 2. By monitoring the working state of the circuit breaker 2 in the electrical interlock for power plant electrical maintenance in real time, not only the working efficiency of the circuit breaker 2 is improved, but also it is ensured that the electrical interlock for power plant electrical maintenance can be quickly detected and repaired in a timely manner after a failure occurs.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrical interlock for electrical maintenance in a power plant, characterized in that: include: A fixed seat (11), a slide groove (100) is provided on the surface of the fixed seat (11), an adjusting slide seat (12) is horizontally slidably connected to the inner wall of the slide groove (100), a transmission component (13) is symmetrically arranged on both sides of the adjusting slide seat (12), one end of the transmission component (13) penetrates the side wall of the slide groove (100) and is fixedly connected to the side wall of the adjusting slide seat (12), a guide seat (14) is symmetrically fixedly connected to both sides of the fixed seat (11), a rotating arm mechanism (15) is arranged on the side of the guide seat (14), one end of the rotating arm mechanism (15) is connected to one end of the transmission component (13) penetrating the side wall of the fixed seat (11), and a limiting mechanism (3) is arranged on the side of the adjusting slide seat (12), and one end of the limiting mechanism (3) contacts the inner wall of the slide groove (100).

2. The electrical interlock for electrical maintenance of a power plant according to claim 1, characterized in that: It also includes a circuit breaker (2), wherein one end of the rotating arm mechanism (15) is slidably connected to the outer wall of the circuit breaker (2) and contacts the surface of a handle switch (21) on the circuit breaker (2).

3. The electrical interlock for electrical maintenance of a power plant according to claim 1, characterized in that: The transmission assembly (13) comprises a rotating drum (131), the rotating drum (131) is rotatably connected in the fixed seat (11), a transmission rod (132) is slidably connected to the inner wall of the rotating drum (131), one end of the transmission rod (132) passes through the side wall of the slide groove (100) and is fixedly connected to the side wall of the adjustment slide seat (12), the other end of the transmission rod (132) located inside the rotating drum (131) is fixedly connected to a convex shaft (133), and the inner wall of the rotating drum (131) is provided with a A spiral guide groove (134) is provided, one end of the convex shaft (133) is located inside the spiral guide groove (134), and the convex shaft (133) is slidably connected to the inner wall of the spiral guide groove (134), a transmission sleeve rod (135) is fixedly connected to the surface of the rotating cylinder (131), one end of the transmission sleeve rod (135) penetrates the side wall of the fixed seat (11) and is connected to one side of the rotating arm mechanism (15), and the two groups of convex shafts (133) drive the two groups of rotating cylinders (131) to rotate in opposite directions.

4. The electrical interlock for electrical maintenance of a power plant according to claim 1, characterized in that: An arc-shaped guide groove (141) is provided on the surface of the guide seat (14) at a position corresponding to the position of the circuit breaker (2).

5. The electrical interlock for electrical maintenance of a power plant according to claim 1, characterized in that: The arm mechanism (15) comprises a swing arm (151), the swing arm (151) being rotatably connected to a side surface of the guide seat (14) close to the fixed seat (11), a transmission inner rod (152) being fixedly connected to a side wall of the swing arm (151), and the transmission inner rod being slidably connected to an inner wall of one end of a transmission sleeve rod (135), a lever (153) being slidably connected in the arc-shaped guide groove (141), one end of the lever (153) being fixedly connected to a side wall of the swing arm (151) away from one end of the transmission inner rod (152), the other end of the lever (153) being slidably connected to a surface of a circuit breaker (2), and the other end of the lever (153) being sleeved on the outside of a handle switch (21) on the circuit breaker (2).

6. The electrical interlock for electrical maintenance of a power plant according to claim 1, characterized in that: The limiting mechanism (3) comprises a threaded barrel (31), wherein the threaded barrel (31) is threadedly connected to the side wall of the adjusting slide seat (12), a push rod (32) is slidably connected in the threaded barrel (31), and a spring (33) is fixedly connected between the push rod (32) and the inner wall of the threaded barrel (31), one end of the push rod (32) passes through the side wall of the threaded barrel (31) and is fixedly connected to a ball seat (34), and the other end of the push rod (32) passes through the side wall of the threaded barrel (31) and is fixedly connected to an abutment plate (35), and the abutment plate (35) is abutted and fixed to the inner wall of the slide groove (100).

7. The electrical interlock for electrical maintenance of a power plant according to claim 6, characterized in that: The surface of one side of the abutment plate (35) close to the inner wall of the slide groove (100) is provided with anti-slip grooves, and the inner wall of the slide groove (100) is provided with a strip groove for facilitating the sliding of one end of the push rod (32).

8. The electrical interlock for electrical maintenance of a power plant according to claim 6, characterized in that: A straight key and a straight key groove (136) are respectively arranged at positions corresponding to the inner wall of the transmission sleeve rod (135) on the surface of the transmission inner rod (152), and the straight key is slidably connected in the straight key groove (136).

9. The electrical interlock for electrical maintenance of a power plant according to claim 2, characterized in that: It also includes a circuit breaker detection device for detecting the working state of an electrical interlocking circuit breaker (2) used for electrical maintenance of a power plant, the circuit breaker detection device comprising: An ion selective electrode sensor is used to detect the concentration of ions after an arc is generated inside the circuit breaker (2) when it is working; A speed sensor for detecting the speed of ions generated after an arc is generated inside the circuit breaker (2) when the circuit breaker (2) is working; A high-voltage probe sensor, used to detect the voltage of an arc generated inside the circuit breaker (2) when it is working; A temperature sensor, used to detect the temperature of an arc generated inside the circuit breaker (2) when it is working; A controller and an alarm, wherein the controller is electrically connected to the ion selective electrode sensor, the speed sensor, the high voltage probe sensor, the temperature sensor and the alarm, and the controller controls the alarm to work based on the ion selective electrode sensor, the speed sensor, the high voltage probe sensor and the temperature sensor.

10. The electrical interlock for electrical maintenance of a power plant according to claim 9, characterized in that: The controller controls the alarm to work based on the ion selective electrode sensor, the speed sensor, the high voltage probe sensor and the temperature sensor, including: According to the formula and the detection values ​​of the ion selective electrode sensor, the speed sensor, the high voltage probe sensor and the temperature sensor, the actual current amplitude of the electrical interlocking circuit breaker (2) used for electrical maintenance of the power plant during operation is calculated. , the controller compares the actual current amplitude of the electrical interlocking circuit breaker (2) used for electrical maintenance in the power plant during operation Compared with the preset maximum allowable current amplitude, if the actual current amplitude of the electrical interlocking circuit breaker (2) used for electrical maintenance of the power plant during operation is If the current amplitude is higher than the preset maximum allowable current amplitude, the controller controls the alarm to sound an alarm; ； in, The actual current amplitude of the electrical interlocking circuit breaker (2) used for electrical maintenance in the power plant during operation, is the detection value of the ion concentration after an arc is generated inside the circuit breaker (2) when the ion selective electrode sensor is working. is the detection value of the ion speed after the arc is generated inside the circuit breaker (2) when the speed sensor is working, is the average charge multiplicity constant, is the unit charge, is the magnetic induction intensity, is the enthalpy of metal vapor, is the detection value of the arc voltage generated inside the circuit breaker (2) when the high-voltage probe sensor is working, is the material density of the contacts in the circuit breaker (2), is the specific heat ratio of the gas, is the ideal gas constant, It is the detection value of the temperature sensor after the arc is generated inside the circuit breaker (2) when it is working.

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