Totally-enclosed outdoor high-voltage circuit breaker
Through a fully enclosed design and passive temperature sensor, the problems of oxidation and low temperature measurement accuracy of outdoor high-voltage circuit breakers are solved, which improves safety and temperature measurement accuracy, and reduces operating strength and fastening risks.
Patent Information
- Application Number
- CN202420841067.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The conductors of outdoor high-voltage circuit breakers are oxidized in wind and rain environments, resulting in poor contact and safety accidents. The traditional isolation switch is not fixed firmly, the temperature measurement accuracy is low, and it is difficult.
It adopts a fully enclosed design, and the integrated molding of conductors are cast by pre-insulated silicone rubber, and a passive temperature sensor is integrated on the isolation switch, and the conductors are wrapped with torque bolts and silicone gel to measure the temperature instead of an infrared thermometer.
Improves the safety and temperature measurement accuracy of the circuit breaker, reduces the operating strength, prevents conductor oxidation and rainwater penetration, and adapts to a variety of wire specifications to reduce fastening risks.
Smart Images
Figure CN222190562U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-voltage electrical appliances, in particular to a fully enclosed outdoor high-voltage circuit breaker. Background Art
[0002] Outdoor high-voltage circuit breakers are devices used to disconnect or connect high-voltage circuits and are widely used in transmission lines, substations, power plants, railway power and other occasions. This type of circuit breaker can withstand environmental factors such as wind, rain, snow, dirt, condensation, ice and thick frost, so it is particularly suitable for use in open-air environments. According to different rated voltages, currents and use environments, outdoor high-voltage circuit breakers can be divided into many types, such as air circuit breakers, SF6 gas circuit breakers, vacuum circuit breakers, etc. The working principle of outdoor high-voltage circuit breakers is mainly to use the mechanical switch in the circuit breaker to disconnect or connect the current in the high-voltage circuit.
[0003] However, in the process of implementing the utility model technical solution in the embodiment of the present application, the applicant found that the above technology has at least the following technical problems:
[0004] Conductors exposed to wind and rain outdoors will oxidize, which will cause poor contact and long-term safety accidents. Conductors exposed to the outside will cause electric shock accidents caused by branches, kites, etc. Copper busbars exposed to the outside for a long time will oxidize, and the sheathed ones will be cut during on-site operations, resulting in widespread damage. In addition, the fixing is not firm, and they will age, break, and blow off.
[0005] Traditional isolating switches use two conductors connected by bolts. The contact force between the blade and the terminal head is controlled by manually adjusting the tightness of the screws. This is greatly affected by human experience. If the tightness is too tight, the blade switch will be inflexible, and if the tightness is too loose, poor contact will occur.
[0006] Currently, workers use infrared thermometers to measure temperature remotely under the poles, but the test accuracy is low and the difficulty is high. Utility Model Content
[0007] The embodiment of the present application provides a fully enclosed outdoor high-voltage circuit breaker, which adopts a pre-insulation method to seal and cast all conductors and silicone rubber into one piece, thereby solving the impact of conductors outdoors. The pre-insulated equipment wire clamp with a passive temperature sensor replaces the current work of remote temperature measurement by workers under the pole using an infrared thermometer, thereby improving the temperature measurement accuracy and reducing the operation intensity of personnel.
[0008] The embodiment of the present application provides a fully enclosed outdoor high-voltage circuit breaker, including: a circuit breaker body, wherein the circuit breaker body is fixed to a chassis by bolts, a bracket is fixed to the front side of the chassis by bolts, an isolating switch is arranged on the bracket, a mutual inductor is connected to the front side of the circuit breaker body, the mutual inductor is connected to the isolating switch through a pre-insulated equipment wire clamp, an insulating pull rod is connected to the isolating switch, the bottom end of the insulating pull rod is connected to a transmission mechanism through a cotter pin, and the transmission mechanism is fixed to an adjusting screw through an axle pin.
[0009] The conductor inside the pre-insulated equipment wire clamp adopts a cast one-piece structure, and the outside is made of silicone rubber cast as a whole. Two groups of torque bolts are arranged on the pre-insulated equipment wire clamp, two in each group, and a cover plate is arranged on the pre-insulated equipment wire clamp at the torque bolts. The cover plate is connected and fixed to the pre-insulated equipment wire clamp by means of buckles and slots. A passive temperature sensor is embedded and fixed inside the pre-insulated equipment wire clamp. A bowl-shaped protective edge is arranged at the bottom of the pre-insulated equipment wire clamp, and the protective edge and the pre-insulated equipment wire clamp are integrated. A threaded channel and an inlet channel are arranged in the pre-insulated equipment wire clamp, and a locking nut is arranged at the top of the threaded channel.
[0010] A silicone gel bag is pre-buried in the pre-insulated equipment wire clamp at the torque bolt. During the tightening process of the torque bolt, the silicone gel bag is stressed and automatically fills the incoming line channel.
[0011] The passive temperature sensor is connected to a handheld terminal by wireless transmission to automatically collect data.
[0012] Spring seats are arranged at both ends of the adjusting screw rod, springs are arranged on the spring seats, and the left end of the adjusting screw rod is connected and fixed to the bottom of the isolating switch through an axle pin.
[0013] The transmission mechanism is fixed on the isolation knife shaft, a copper sleeve is arranged at one end of the isolation knife shaft, the copper sleeve is arranged between the knife shaft and the bracket, a separation and combination handle is arranged on the copper sleeve, and the separation and combination handle is embedded in the copper sleeve and fixed by an elastic pin.
[0014] A live bolt is fixed on the isolating switch through a cotter pin, and an insulating pull rod is fixed to the live bolt through a nut. The live bolt is fixed at 1 / 3 of the knife switch, close to the side of the transformer. An insulating sleeve is provided on the knife switch, and pre-insulated equipment wire clamps are provided at both ends of the isolating switch. The isolating switch is a fully enclosed isolating switch, which adopts a conductor and silicone rubber integrally cast type.
[0015] The isolating switch comprises a post insulator, a base plate, a knife switch and a pre-insulated equipment wire clamp. The post insulator is provided with pile heads at the upper and lower ends. The post insulator is fixed to the base plate by bolts. The outside of the pile head is wrapped with silicone gel. The conductive conductor on the knife switch is wrapped with silicone gel.
[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
[0017] The pre-insulation method is adopted to seal and cast all the conductors with silicone rubber to form an integrated structure, which solves the problem of conductor oxidation caused by the influence of wind and rain outdoors. Conductor oxidation will cause poor contact and cause safety accidents in the long run. The exposed conductors will cause contact electric shock safety accidents such as branches and kites, thus improving the safety of the circuit breaker.
[0018] The pre-insulated equipment clamp is cast with conductive conductor and silicone rubber as a whole. The conductive conductor is also an integrated structure, which reduces the conductive fastening points and reduces risks.
[0019] The pre-insulated equipment wire clamp adopts torque screws. The pre-insulated equipment wire clamp can be directly fixed to the wire and can adapt to wires of various specifications. There is a silicone gel bag inside the pre-insulated equipment wire clamp. During the force process, the silicone gel will be compressed to tightly wrap the wire to prevent rainwater from penetrating into the wire clamp.
[0020] The pre-insulated equipment wire clamp with a passive temperature sensor replaces the current work of remote temperature measurement by workers under the pole using an infrared thermometer, which improves the temperature measurement accuracy and reduces the operation intensity of personnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the specific structure of the utility model;
[0022] Figure 2 This is a schematic diagram of the structure of the pre-insulated equipment wire clamp in the utility model;
[0023] Figure 3 This is a schematic diagram of the internal structure of the pre-insulated equipment wire clamp in the utility model;
[0024] Figure 4 It is a structural schematic diagram of the isolating switch in the utility model. DETAILED DESCRIPTION
[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Example
[0026] A fully enclosed outdoor high-voltage circuit breaker, comprising: a circuit breaker body 6, the circuit breaker body 6 is fixed to a chassis 1 by bolts, a bracket 2 is fixed to the front side of the chassis 1 by bolts, an isolating switch 3 is arranged on the bracket, a mutual inductor 5 is connected to the front side of the circuit breaker body 6, the mutual inductor 5 is connected to the isolating switch 3 through a pre-insulated equipment clamp 7, an insulating pull rod 8 is connected to the isolating switch 3, the bottom end of the insulating pull rod 8 is connected to a transmission mechanism 11 through a cotter pin, and the transmission mechanism 11 is fixed to an adjusting screw 9 through an axle pin;
[0027] The conductor inside the pre-insulated equipment wire clamp 7 adopts a cast one-piece structure, and the outside is integrally cast with silicone rubber. The pre-insulated equipment wire clamp 7 is provided with two groups of torque bolts 7-4, two in each group, and the pre-insulated equipment wire clamp 7 at the torque bolts 7-4 is provided with a cover plate 7-1, and the cover plate 7-1 is connected and fixed to the pre-insulated equipment wire clamp 7 by means of a buckle and a slot. A passive temperature sensor 7-5 is embedded and fixed inside the pre-insulated equipment wire clamp 7, and a bowl-shaped protective edge 7-2 is provided at the bottom of the pre-insulated equipment wire clamp 7. The protective edge 7-2 and the pre-insulated equipment wire clamp 7 are integrated. A threaded channel and an inlet channel are provided in the pre-insulated equipment wire clamp 7, and a locking nut is provided at the top of the threaded channel;
[0028] A silicone gel bag is pre-buried in the pre-insulated equipment wire clamp 7 at the torque bolt 7-4. During the tightening process of the torque bolt 7-4, the silicone gel bag is subjected to force and automatically fills the incoming line channel.
[0029] The passive temperature sensor 7-5 is connected to the handheld terminal by wireless transmission to automatically collect data;
[0030] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:
[0031] The pre-insulation method is adopted to seal and cast all the conductors with silicone rubber to form an integrated structure, which solves the problem of conductor oxidation caused by the influence of wind and rain outdoors. Conductor oxidation will cause poor contact and cause safety accidents in the long run. The exposed conductors will cause contact electric shock safety accidents such as branches and kites, thus improving the safety of the circuit breaker.
[0032] The pre-insulated equipment clamp 7 is cast with conductive conductor and silicone rubber as a whole, and the conductive conductor is also an integrated structure, which reduces the conductive fastening points and reduces the risk;
[0033] The pre-insulated equipment wire clamp 7 adopts a torque screw, and the pre-insulated equipment wire clamp 7 can be directly fixed to the wire and can be adapted to wires of various specifications; the pre-insulated equipment wire clamp 7 has a silicone gel bag inside, and during the force process, the silicone gel will be compressed to tightly wrap the wire to prevent rainwater from penetrating into the wire clamp;
[0034] The pre-insulated equipment clamp 7 is in the form of a side torque bolt 7-4 and is protected by a cover plate 7-1;
[0035] Pre-insulated equipment clamps 7 with passive temperature sensors are provided on both sides of the disconnector 3, replacing the current work of remote temperature measurement by workers under the pole using infrared thermometers, thereby improving the temperature measurement accuracy and reducing the operation intensity of personnel;
[0036] Working principle of passive temperature sensor 7-5: Passive temperature sensor 7-5 is composed of temperature sensor, signal conditioning and isolation module, data processing module, wireless transmitter, wireless receiver and energy management circuit. The energy management circuit is mainly composed of three parts: boost circuit, start circuit and voltage stabilizing circuit. The boost circuit is responsible for installing current transformer 5 on the high-voltage bus, and using the lower voltage of the induction output of the bus current on the secondary side of the transformer 5 to increase the voltage and store it in a capacitor or a rechargeable battery; the start circuit controls the output of energy. When the voltage of the energy storage device rises to the high voltage threshold, the start circuit controls the opening of the subsequent circuit, and the energy flows to the subsequent circuit for use by the subsequent circuit. When the voltage of the energy storage device drops to the low voltage threshold, the start circuit controls the shutdown of the subsequent circuit, and the energy storage device continues to store energy, working over and over again. The data processing module collects temperature measurement data regularly by controlling the temperature sensor, and converts the analog signal into a digital signal through the signal conditioning and isolation module, and provides it to the data processing module for processing. The data processing module sends the processed data through a wireless transmitter, which is received by another module wireless receiver in the temperature monitoring system and uploaded to the terminal for display. Example
[0037] A fully enclosed outdoor high-voltage circuit breaker, wherein both ends of the adjusting screw 9 are provided with spring seats, the spring seats are provided with springs, and the left end of the adjusting screw 9 is connected and fixed to the bottom of the isolating switch 3 through an axle pin;
[0038] The transmission mechanism 11 is fixed on the isolation blade shaft 10. A copper sleeve is provided at one end of the isolation blade shaft 10. The copper sleeve is provided between the blade shaft and the bracket. A separation and combination handle is provided on the copper sleeve. The separation and combination handle is embedded in the copper sleeve and fixed by an elastic pin.
[0039] A live bolt 12 is fixed to the isolating switch 3 by a cotter pin, and an insulating pull rod 8 is fixed to the live bolt 12 by a nut. The live bolt 12 is fixed at 1 / 3 of the knife switch 4, close to the side of the mutual inductor 5. An insulating sleeve is provided on the knife switch 4. Pre-insulated equipment wire clamps 7 are provided at both ends of the isolating switch 3. The isolating switch 3 is a fully enclosed isolating switch 3, and adopts a conductor and silicone rubber integrally cast type.
[0040] The isolating switch comprises a post insulator 3-2, a base plate, a knife switch 4 and a pre-insulated equipment clamp 7. The post insulator 3-2 is provided with a pile head 3-1 at both ends. The post insulator 3-2 is fixed to the base plate by bolts. The pile head 3-1 is wrapped with silicone gel on the outside, and the conductive conductor is wrapped with silicone gel on the knife switch.
[0041] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:
[0042] The fully enclosed isolating switch 3 is cast in one piece of conductor and silicone rubber, and is composed of a complete conductor and upper and lower pile heads 3-1. The conductor and the pile head 3-1 are processed by CNC, and the dimensions are consistent to eliminate artificial influence.
[0043] The conductive conductors of the traditional isolating switch 3 are restricted by the structure, and most of them are exposed to the outside. Long-term environmental factors such as wind and rain may cause oxidation of the conductors, and safety accidents such as poor contact or accidental electric shock may occur frequently. The connecting conductors of the upper and lower piles 3-1 of the fully enclosed isolating switch 3 are integrally cast with silicone rubber, and the connecting parts are also enclosed inside, which is completely isolated from environmental influences.
[0044] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.
[0045] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A fully enclosed outdoor high voltage circuit breaker, comprising: The circuit breaker body is characterized in that the circuit breaker body is fixed to the chassis by bolts, a bracket is fixed to the front side of the chassis by bolts, an isolating switch is arranged on the bracket, a mutual inductor is connected to the front side of the circuit breaker body, the mutual inductor is connected to the isolating switch through a pre-insulated equipment wire clamp, an insulating pull rod is connected to the isolating switch, the bottom end of the insulating pull rod is connected to a transmission mechanism through a cotter pin, and the transmission mechanism is fixed to the adjusting screw through an axle pin.
2. A fully enclosed outdoor high-voltage circuit breaker according to claim 1, characterized in that: The conductor inside the pre-insulated equipment wire clamp adopts a cast one-piece structure, and the outside is made of silicone rubber cast as a whole. Two groups of torque bolts are arranged on the pre-insulated equipment wire clamp, two in each group, and a cover plate is arranged on the pre-insulated equipment wire clamp at the torque bolts. The cover plate is connected and fixed to the pre-insulated equipment wire clamp by means of buckles and slots. A passive temperature sensor is embedded and fixed inside the pre-insulated equipment wire clamp. A bowl-shaped protective edge is arranged at the bottom of the pre-insulated equipment wire clamp, and the protective edge and the pre-insulated equipment wire clamp are integrated. A threaded channel and an inlet channel are arranged in the pre-insulated equipment wire clamp, and a locking nut is arranged at the top of the threaded channel.
3. A fully enclosed outdoor high-voltage circuit breaker as claimed in claim 2, characterized in that: A silicone gel bag is pre-buried in the pre-insulated equipment wire clamp at the torque bolt. During the tightening process of the torque bolt, the silicone gel bag is stressed and automatically fills the incoming line channel.
4. A fully enclosed outdoor high-voltage circuit breaker as claimed in claim 2, characterized in that: The passive temperature sensor is connected to a handheld terminal by wireless transmission to automatically collect data.
5. A fully enclosed outdoor high-voltage circuit breaker as claimed in claim 1, characterized in that: Spring seats are arranged at both ends of the adjusting screw rod, springs are arranged on the spring seats, and the left end of the adjusting screw rod is connected and fixed to the bottom of the isolating switch through an axle pin.
6. A fully enclosed outdoor high-voltage circuit breaker according to claim 1, characterized in that: The transmission mechanism is fixed on the isolation knife shaft, a copper sleeve is arranged at one end of the isolation knife shaft, the copper sleeve is arranged between the knife shaft and the bracket, a separation and combination handle is arranged on the copper sleeve, and the separation and combination handle is embedded in the copper sleeve and fixed by an elastic pin.
7. A fully enclosed outdoor high-voltage circuit breaker according to claim 1, characterized in that: A live bolt is fixed on the isolating switch through a cotter pin, and an insulating pull rod is fixed to the live bolt through a nut. The live bolt is fixed at 1 / 3 of the knife switch, close to the side of the transformer. An insulating sleeve is provided on the knife switch, and pre-insulated equipment wire clamps are provided at both ends of the isolating switch. The isolating switch is a fully enclosed isolating switch, which adopts a conductor and silicone rubber integrally cast type.
8. A fully enclosed outdoor high-voltage circuit breaker as claimed in claim 1, characterized in that: The isolating switch comprises a post insulator, a base plate, a knife switch and a pre-insulated equipment wire clamp. The post insulator is provided with pile heads at the upper and lower ends. The post insulator is fixed to the base plate by bolts. The outside of the pile head is wrapped with silicone gel. The conductive conductor on the knife switch is wrapped with silicone gel.