Multi-isolation switch closing detection structure
By designing a multi-isolated knife switch closed detection structure close to the transmission mechanism and away from the high-voltage wire, the traditional detection structure is solved for the danger of electric shock during installation and disassembly and the safety of high-altitude operations, achieving safe and convenient inspection and maintenance.
Patent Information
- Application Number
- CN202421126778.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-05-22
AI Technical Summary
The traditional isolation knife switch closure detection structure is prone to electric shock during installation and disassembly, requires power outage and requires high-altitude operation, which increases safety risks.
A multi-isolated knife gate closure detection structure is designed. The sensor is arranged close to the transmission mechanism and away from the high-voltage wire. The transmission mechanism is driven to rotate through the operating mechanism box to drive the knife gate arm to open and close. The sensor detects the rotation stroke of the transmission mechanism, avoiding direct contact with the high-voltage wire.
It effectively avoids the risk of electric shock, does not require power outage, and can be maintained on the ground, avoids the danger of high-altitude operations, and improves safety and convenience.
Smart Images
Figure CN222812913U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrical equipment, in particular to a multi-isolation knife switch closing detection structure. Background Art
[0002] Knife switch is a kind of manual switch of power equipment, also known as knife switch, which is generally used for low voltage electricity. There are single-phase knife switch and three-phase knife switch. Among them, isolation knife switch is the most commonly used electrical equipment in high-voltage switchgear. AC high-voltage isolation knife switch controls the on and off of current, and its closing status needs to be detected by sensors.
[0003] The traditional isolation knife switch closure detection structure is to install a sensor for detecting whether the isolation knife switch is closed close to the knife switch arm. When the knife switch arm rotates, the signal feedback from the sensor reflects whether the isolation knife switch is closed. However, when using this detection structure to detect whether the isolation knife switch is closed, there is a risk of electric shock due to the contact between the knife switch arm and the high-voltage wire during installation and removal of the sensor. It is necessary to cut off the power supply, which greatly affects our production and life, and requires high-altitude operations, increasing the risk of falling from heights. Utility Model Content
[0004] The utility model aims to provide a multi-isolation knife switch closure detection structure which is convenient for installation and maintenance, effectively avoids the danger of electric shock, does not need to be powered off, and can avoid the danger of high-altitude operations.
[0005] The utility model is achieved in this way:
[0006] A multi-isolation knife switch closure detection structure comprises an operating mechanism box and a sensor for detecting knife switch closure, wherein the sensor is electrically connected to the operating mechanism box, the operating mechanism box is drivingly connected to a transmission mechanism, the sensor is arranged close to the transmission mechanism, and the transmission mechanism is drivingly connected to a knife switch arm in contact with a high-voltage wire.
[0007] Furthermore, the transmission mechanism includes an angle plate connected to the operating mechanism box, the sensors are respectively arranged on the upper and lower sides of the angle plate, the angle plate is hinged with a transmission shaft, the transmission shaft is hinged with a swing arm, and the swing arm is connected to the knife switch arm through an insulator.
[0008] Furthermore, the sensor is a micro switch.
[0009] Furthermore, the operating mechanism box includes a controller and a motor, the sensor and the motor are electrically connected to the controller, and the motor is drivingly connected to the transmission mechanism.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] In actual application, the transmission mechanism is driven to rotate by the operating mechanism box to drive the knife switch arm to open and close the gate. The sensor arranged near the transmission mechanism detects the rotation stroke of the transmission mechanism and transmits the signal to the operating mechanism box. The operating mechanism box determines the opening and closing status of the knife switch arm according to the sensor detection signal. Since the sensor is arranged near the transmission mechanism and away from the high-voltage wire, the risk of electric shock can be effectively avoided during installation and disassembly, and there is no need to cut off the power. Moreover, the maintenance of the detection structure can be achieved on the ground, and the risk of high-altitude operation can be avoided. The utility model is convenient for installation and maintenance, effectively avoids the risk of electric shock, and there is no need to cut off the power, and the risk of high-altitude operation can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a structural schematic diagram of the utility model.
[0014] Reference numerals: knife switch arm 1 operating mechanism box 2; motor 21; controller 22; transmission mechanism 3; angle plate 31; transmission shaft 32; swing arm 33; sensor 4. DETAILED DESCRIPTION
[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.
[0016] See also Figure 1A multi-isolation knife switch closure detection structure includes an operating mechanism box 2 and a sensor 4 for detecting the closure of the knife switch, wherein the sensor 4 is electrically connected to the operating mechanism box 2, the operating mechanism box 2 is drivingly connected to a transmission mechanism 3, the sensor 4 is arranged close to the transmission mechanism 3, and the transmission mechanism 3 is drivingly connected to a knife switch arm 1 that contacts a high-voltage wire.
[0017] In actual application, the transmission mechanism 3 is driven to rotate by the operating mechanism box 2 to drive the knife switch arm 1 to open and close the switch. The sensor 4 arranged near the transmission mechanism 3 detects the rotation stroke of the transmission mechanism 3 and transmits the signal to the operating mechanism box 2. The operating mechanism box 2 determines the opening and closing status of the knife switch arm 1 according to the detection signal of the sensor 4. Since the sensor 4 is arranged close to the transmission mechanism 3 and away from the high-voltage wire, the risk of electric shock can be effectively avoided during installation and disassembly, and there is no need to perform power-off processing. Moreover, the maintenance of the detection structure can be achieved on the ground, which can avoid the risk of high-altitude operations. The utility model is convenient for installation and maintenance, effectively avoids the risk of electric shock, does not need to perform power-off processing, and can avoid the risk of high-altitude operations.
[0018] See also Figure 1 The transmission mechanism 3 includes an angle disc 31 connected to the operating mechanism box 2, and the sensors 4 are respectively arranged on the upper and lower sides of the angle disc 31. The angle disc 31 is hinged with a transmission shaft 32, and the transmission shaft 32 is hinged with a swing arm 33. The swing arm 33 is connected to the knife switch arm 1 through an insulator. In this embodiment, the operating mechanism box 2 drives the angle disc 31 to reciprocate up and down, drives the swing arm 33 to rotate through the transmission shaft 32, and the swing arm 33 drives the knife switch arm 1 to open and close. The sensors 4 located on the upper and lower sides respectively detect the up and down rotation stroke of the angle disc 31, thereby realizing the detection of the opening and closing of the knife switch arm 1.
[0019] See also Figure 1 , the sensor 4 is a micro switch. In this embodiment, when the knife switch arm 1 is in the open state, one micro switch is in the closed state, and the other micro switch is in the open state. When the transmission mechanism 3 rotates a corresponding angle, the micro switch in the closed state is converted to the open state, and the micro switch in the open state is converted to the closed state, and the operating mechanism box 2 determines that the knife switch arm 1 is successfully closed.
[0020] See also Figure 1 The operating mechanism box 2 includes a controller 22 and a motor 21. The sensor 4 and the motor 21 are electrically connected to the controller 22. The motor 21 is drivingly connected to the transmission mechanism 3. In this embodiment, the controller 22 controls the motor 21 to drive the transmission mechanism 3 to rotate. The controller 22 determines whether the knife switch arm 1 is opened or closed according to the signal fed back by the sensor 4, and controls the motor 21 to stop running.
[0021] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A multi-isolation knife switch closure detection structure, characterized in that: The invention comprises an operating mechanism box (2) and a sensor (4) for detecting the closing of a knife switch, wherein the sensor (4) is electrically connected to the operating mechanism box (2), the operating mechanism box (2) is drivingly connected to a transmission mechanism (3), the sensor (4) is arranged close to the transmission mechanism (3), and the transmission mechanism (3) is drivingly connected to a knife switch arm (1) in contact with a high-voltage wire.
2. A multi-isolation knife switch closing detection structure according to claim 1, characterized in that: The transmission mechanism (3) comprises an angle disc (31) connected to the operating mechanism box (2); the sensors (4) are respectively arranged on the upper and lower sides of the angle disc (31); the angle disc (31) is hinged with a transmission shaft (32); the transmission shaft (32) is hinged with a swing arm (33); and the swing arm (33) is connected to the knife switch arm (1) via an insulator.
3. A multi-isolation knife switch closing detection structure according to claim 2, characterized in that: The sensor (4) is a micro switch.
4. A multi-isolation knife switch closing detection structure according to claim 1, characterized in that: The operating mechanism box (2) comprises a controller (22) and a motor (21), the sensor (4) and the motor (21) are both electrically connected to the controller (22), and the motor (21) is drivingly connected to the transmission mechanism (3).