Pole-mounted vacuum circuit breaker capable of preventing opening coil from being disconnected
By welding conductive parts on the opening structure and fixing them with structures such as fixing strips and elastic strips, the problem of easy separation of the connector is solved, and the stability and maintenance efficiency of the vacuum circuit breaker on the column is improved.
Patent Information
- Application Number
- CN202510627465.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2025-08-08
AI Technical Summary
The connection head and opening structure of the vacuum circuit breaker on the column are easily separated due to vibration, resulting in the circuit breaker being unable to open normally, increasing the maintenance cost and the risk of line interruption.
The conductive parts are welded on the opening structure, and fixed them in the fixing groove through structures such as fixing strips and elastic strips, increasing the welding accuracy and stability of the conductive parts and the opening structure, and reducing the possibility of separation.
It improves the welding accuracy and stability of conductive parts and the opening structure, reduces the risk of separation caused by vibration, and reduces the maintenance frequency and the probability of line interruption.
Smart Images
Figure CN120453096A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of circuit breakers, and in particular to a pole-mounted vacuum circuit breaker that prevents disconnection of a tripping coil. Background Art
[0002] A pole-mounted vacuum circuit breaker is a switchgear installed on an outdoor pole. It is mainly used to connect, disconnect and provide fault protection for circuits in power systems. Pole-mounted vacuum circuit breakers are usually installed outdoors and are more commonly used in power distribution systems.
[0003] In related art, a column-mounted vacuum circuit breaker includes a housing, within which are located an operating structure and a tripping structure. The tripping structure is used to drive the operating structure to trip the circuit breaker, while the operating structure is used to perform the basic functions of the circuit breaker. A connector is plugged into the tripping structure, and an aviation plug connector is provided on the housing. The connector and the aviation plug connector are connected by a wire. Power is supplied through the aviation plug connector, and the wire supplies power to the tripping structure through the connector.
[0004] In some cases of ground vibration or vibration inside the shell, there is a possibility that the connector and the trip structure may separate due to long-term vibration, causing the connector to detach from the trip structure. The trip structure cannot perform the trip operation due to lack of power drive. At this time, the staff can first disconnect the line in the vacuum circuit breaker, and then open the shell to reinsert the connector into the trip structure, resulting in high costs for delaying line connectivity during maintenance. Summary of the Invention
[0005] In order to improve the problem that the connector and the tripping structure are easily separated due to vibration, the present application provides a pole-mounted vacuum circuit breaker that prevents the tripping coil from disconnecting.
[0006] The present application provides a pole-mounted vacuum circuit breaker that prevents the tripping coil from disconnecting, which adopts the following technical solution: A pole-mounted vacuum circuit breaker that uses a circuit breaker coil to prevent disconnection includes a shell, a circuit breaker structure is provided in the shell, a conductive part is welded to the circuit breaker structure, an aviation plug connector is provided on the shell, the conductive part is connected to the aviation plug connector, a fixing strip is provided on the conductive part, and a fixing groove for inserting the fixing strip is provided on the circuit breaker structure; when the fixing strip is inserted into the fixing groove, the conductive part is pre-fixed on the circuit breaker structure.
[0007] By adopting the above technical solution, the fixing bar is inserted into the fixing groove, so that the conductive part can be fixed on the disconnecting structure, so that the staff can weld the conductive part to the disconnecting structure, thereby increasing the accuracy of welding the conductive part and the disconnecting structure; by welding the conductive part to the disconnecting structure, the possibility of separation of the conductive part and the disconnecting structure is less likely to occur, thereby reducing the maintenance of the pole-mounted vacuum circuit breaker by the staff, so that the pole-mounted vacuum circuit breaker will not be delayed due to the maintenance of the disconnecting structure.
[0008] Optionally, an elastic strip is provided on the fixing strip, and a groove for inserting the elastic strip is provided on the fixing slot; when the elastic strip is inserted into the groove, the elastic strip is deformed.
[0009] By adopting the above technical solution, the elastic strip is inserted into the groove, causing the elastic strip to deform, so that the elastic strip can fix the fixed strip, reducing the possibility of the fixed strip detaching from the fixing groove, and increasing the reliability between the fixed strip and the switch-off structure.
[0010] Optionally, an abutment portion is provided on the fixing bar, the fixing bar is elastic, and the fixing bar is deformed toward one side of the conductive member; when the fixing bar is inserted into the fixing groove, the abutment portion abuts against the conductive member.
[0011] By adopting the above technical solution, when the fixing bar is inserted into the fixing groove, the fixing bar is deformed toward one side of the conductive part. At this time, the fixing bar can abut the conductive part, and the abutting portion can abut the conductive part, so that the fixing bar and the abutting portion both support the conductive part, so that the conductive part can be more stably located in the trip structure; if the welding point between the conductive part and the trip structure is damaged due to the stress generated by vibration, the fixing bar and the abutting portion can support the conductive part at this time, reducing the possibility of separation between the conductive part and the trip structure.
[0012] Optionally, a protective plate is provided on the conductive member, and a protective groove for installing the conductive member is opened on the protective plate; when the conductive member is located in the protective groove, the protective plate blocks the connection between the conductive member and the trip structure.
[0013] By adopting the above technical solution, the conductive part is installed in the protective groove, so that the protective plate can protect the welding point between the conductive part and the trip structure, reducing the possibility of external debris or moisture corroding the connection between the conductive part and the trip structure.
[0014] Optionally, the protective plate is provided with a receiving groove for inserting the fixing strip; when the fixing strip is inserted into the receiving groove, the protective plate is fixed on the conductive member.
[0015] By adopting the above technical solution, the fixing bar is inserted into the accommodating groove, so that the fixing bar can limit the movement of the protection plate, reduce the problem of the protection plate being separated from the conductive part due to movement, and increase the stability of the protection plate in protecting the connection between the conductive part and the disconnecting structure.
[0016] Optionally, a receiving hole communicating with the receiving groove is opened on the protection plate, and a receiving block is slidably connected in the receiving hole, and the receiving block is used to push the fixing bar out of the receiving groove.
[0017] By adopting the above technical solution, the accommodating block is slidably connected to the accommodating hole. The staff slides the accommodating block, and the accommodating block drives the fixing bar to deform, so that the fixing bar can be separated from the accommodating groove, so that the fixing bar does not limit the protective plate, making it easier for the staff to replace the protective plate.
[0018] Optionally, the conductive part includes a welding part, a buffer part and a conductive part, the buffer part is located between the welding part and the conductive part, the welding part is used to be welded in the tripping structure, the welding part, the buffer part and the conductive part can all be conductive, the diameter of the end of the buffer part close to the conductive part is smaller than the diameter of the end of the buffer part close to the welding part, and the outer surface of the buffer part is an arc surface.
[0019] By adopting the above technical solution, the welding part is usually larger than the conductive part. Since the buffer part is arranged between the welding part and the conductive part, and the diameter of the end of the buffer part close to the conductive part is smaller than the diameter of the end of the buffer part close to the welding part, and the outer surface of the buffer part is an arc surface, the buffer part alleviates the problem of sudden reduction in cross-sectional area, reduces the increase in local stress caused by sudden change in stiffness, and reduces the damage to the conductive part caused by stress concentration.
[0020] Optionally, a stress groove is provided on the buffer portion, and the stress groove extends along the circumference of the buffer portion.
[0021] By adopting the above technical solution, the stress groove extends along the circumference of the buffer portion, so that the stress can be dispersed into the stress groove, reducing the possibility of stress concentration in the buffer portion, thereby reducing the possibility of the buffer portion being damaged due to excessive stress.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By inserting the fixing strip into the fixing groove, the conductive part can be fixed on the trip structure, so that the staff can weld the conductive part to the trip structure, increasing the accuracy of welding the conductive part and the trip structure; by welding the conductive part to the trip structure, the conductive part and the trip structure are less likely to separate, reducing the maintenance of the pole-mounted vacuum circuit breaker by the staff, so that the pole-mounted vacuum circuit breaker will not be delayed due to the maintenance of the trip structure.
[0023] 2. When the fixing bar is inserted into the fixing groove, the fixing bar is deformed toward one side of the conductive part. At this time, the fixing bar can abut the conductive part, and the abutting portion can abut the conductive part, so that both the fixing bar and the abutting portion support the conductive part, so that the conductive part can be more stably located in the trip structure; if the welding point between the conductive part and the trip structure is damaged due to the stress generated by vibration, the fixing bar and the abutting portion can support the conductive part, reducing the possibility of separation between the conductive part and the trip structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural diagram of an embodiment of the present application; Figure 2 This is a schematic structural diagram highlighting the conductive member in an embodiment of the present application; Figure 3 It is along Figure 1 Partial cross-sectional view along line AA.
[0025] Figure numerals: 1. Shell; 11. Disconnecting structure; 12. Operating structure; 13. Aviation plug connector; 131. Wire; 14. Fixing groove; 141. Groove; 2. Conductive part; 21. Welding part; 22. Buffer part; 23. Conductive part; 24. Stress groove; 25. Fixing strip; 251. Elastic strip; 26. Abutting part; 3. Protective plate; 31. Protective groove; 32. Accommodating groove; 33. Accommodating hole; 34. Accommodating block. DETAILED DESCRIPTION
[0026] The following is combined with Figure 1-3 This application is described in further detail.
[0027] This embodiment discloses a pole-mounted vacuum circuit breaker that uses a circuit breaker to prevent the tripping coil from disconnecting. Figure 1 A pole-mounted vacuum circuit breaker that uses a circuit breaker to prevent the disconnection of the tripping coil includes a shell 1, a tripping structure 11 is provided in the shell 1, an operating structure 12 is provided in the shell 1, the operating structure 12 is used to realize the basic functions of the pole-mounted vacuum circuit breaker, the tripping structure 11 is used to realize the tripping processing of the operating structure 12, and the tripping structure 11 is an electromagnet structure.
[0028] Reference Figure 1 and Figure 2, an aviation plug connector 13 is fixedly connected to the shell 1, a wire 131 is provided on the aviation plug connector 13, a conductive part 2 is fixedly connected to the wire 131, and the conductive part 2 is welded to the tripping structure 11. The conductive part 2 includes a welding part 21, a buffer part 22 and a conductive part 23. The buffer part 22 is integrally formed between the welding part 21 and the conductive part 23. The welding part 21 is used for welding on the tripping structure 11, and the conductive part 23 is used to connect the wire 131, wherein the welding part 21, the buffer part 22 and the conductive part 23 are all made of conductive metal. The outer surface of the buffer part 22 is an arc surface, and the diameter of the buffer part 22 near the conductive part 23 is larger than the diameter of the buffer part 22 near the conductive part 23. The diameter of the welding part 21 is larger to facilitate the welding of the welding part 21 to the tripping structure 11.
[0029] Reference Figure 2 A stress groove 24 is formed on the outer surface of the buffer portion 22. The stress groove 24 extends along the circumference of the buffer portion 22 and extends in a threaded shape. When stress is concentrated, the groove wall of the stress groove 24 can provide space for the buffer portion 22 to deform.
[0030] Reference Figure 2 and Figure 3 Two fixing bars 25 are fixedly connected to the outer surface of the conductive part 23. The fixing bars 25 are elastic and can be deformed toward one side of the conductive part 2. A fixing groove 14 is provided on the surface of the trip structure 11 for inserting the fixing bars 25. When the fixing bars 25 are inserted into the fixing groove 14, the conductive part 2 is pre-fixed on the trip structure 11. An elastic bar 251 is fixedly connected to one end of the fixing bar 25. The elastic bar 251 is elastic. A groove 141 is provided on the wall of the fixing groove 14 for inserting the elastic bar 251. When the elastic bar 251 is inserted into the groove 141, the surface of the fixing bar 25 close to the conductive part 2 can abut against the conductive part 2, and at this time the elastic bar 251 is deformed.
[0031] Reference Figure 2 and Figure 3 An abutting portion 26 is fixedly connected to the surface of the fixing bar 25 near the conductive member 2. The abutting portion 26 is arc-shaped and extends along the circumference of the conductive member 2. The abutting portion 26 is capable of abutting the conductive member 2. When one end of the fixing bar 25 is inserted into the fixing groove 14, the abutting portion 26 is able to abut the outer surface of the conductive member 2. At this time, the surface of the fixing bar 25 near the conductive member 2 abuts the conductive member 2, thereby fixing the conductive member 2.
[0032] Reference Figure 3A protective plate 3 is provided on the conductive member 2. The protective plate 3 has a protective groove 31 for the conductive member 2 to pass through, and the protective groove 31 extends through the side of the protective plate 3. The wall of the protective groove 31 has a receiving groove 32 for the fixing bar 25 to be inserted into. There are two receiving grooves 32, and the receiving grooves 32 extend through the surface of the protective plate 3. Two receiving holes 33 are provided on the surface of the protective plate 3. The receiving holes 33 communicate with the receiving grooves 32, and a receiving block 34 is slidably connected to the receiving hole 33. One end of the receiving block 34 can be inserted into the receiving groove 32, and the length of the receiving block 34 is greater than the length of the receiving hole 33.
[0033] Reference Figure 2 and Figure 3 When the staff member slides the protective plate 3 so that the conductive member 2 is located in the protective groove 31 and the fixing bar 25 is located in the receiving groove 32, the fixing bar 25 abuts the receiving block 34, causing the receiving block 34 to protrude from the receiving hole 33. The staff member presses the receiving block 34, inserting one end of the receiving block 34 into the protective groove 31. At this time, the receiving block 34 drives the fixing bar 25 out of the receiving groove 32, allowing the staff member to slide the protective plate 3 and separate the protective plate 3 and the conductive member 2.
[0034] The implementation principle of a pole-mounted vacuum circuit breaker that prevents the trip coil from disconnecting in an embodiment of the present application is as follows: the staff first inserts the fixing bar 25 into the fixing groove 14, and inserts the elastic bar 251 into the groove 141 to pre-fix the fixing bar 25 to the welding part 21, and then the staff welds the welding part 21 and the trip structure 11, and finally the staff slides the protective plate 3 so that the conductive part 2 is located inside the protective plate 3.
[0035] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0036] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present application should be included in the scope of protection of the present application.
Claims
1. A pole-mounted vacuum circuit breaker with a trip coil preventing disconnection, comprising a housing (1), wherein a trip structure (11) is provided in the housing (1), and characterized in that: A conductive part (2) is welded on the switch-off structure (11), an aviation plug connector (13) is provided on the housing (1), the conductive part (2) is connected to the aviation plug connector (13), a fixing strip (25) is provided on the conductive part (2), and a fixing groove (14) for inserting the fixing strip (25) is provided on the switch-off structure (11); when the fixing strip (25) is inserted into the fixing groove (14), the conductive part (2) is pre-fixed on the switch-off structure (11).
2. A pole-mounted vacuum circuit breaker with a trip coil disconnect prevention function according to claim 1, characterized in that: The fixing strip (25) is provided with an elastic strip (251), and the fixing slot (14) is provided with a groove (141) for the elastic strip (251) to be inserted; when the elastic strip (251) is inserted into the groove (141), the elastic strip (251) is deformed.
3. The pole-mounted vacuum circuit breaker with a trip coil disconnect prevention function according to claim 1, characterized in that: The fixing strip (25) is provided with an abutting portion (26), the fixing strip (25) is elastic, and the fixing strip (25) is deformed toward one side of the conductive member (2); when the fixing strip (25) is inserted into the fixing groove (14), the abutting portion (26) abuts against the conductive member (2).
4. A pole-mounted vacuum circuit breaker with a trip coil disconnect prevention function according to claim 3, characterized in that: A protective plate (3) is provided on the conductive member (2), and a protective groove (31) for installing the conductive member (2) is provided on the protective plate (3); when the conductive member (2) is located in the protective groove (31), the protective plate (3) shields the connection between the conductive member (2) and the opening structure (11).
5. A pole-mounted vacuum circuit breaker with a trip coil disconnect prevention function according to claim 4, characterized in that: The protection plate (3) is provided with a receiving groove (32) for inserting the fixing strip (25); when the fixing strip (25) is inserted into the receiving groove (32), the protection plate (3) is fixed on the conductive member (2).
6. A pole-mounted vacuum circuit breaker with a trip coil disconnect prevention function according to claim 5, characterized in that: The protection plate (3) is provided with a receiving hole (33) communicating with the receiving groove (32), and a receiving block (34) is slidably connected in the receiving hole (33), and the receiving block (34) is used to push the fixing bar (25) out of the receiving groove (32).
7. The pole-mounted vacuum circuit breaker with a trip coil disconnect prevention function according to claim 1, characterized in that: The conductive part (2) comprises a welding portion (21), a buffer portion (22) and a conductive portion (23); the buffer portion (22) is located between the welding portion (21) and the conductive portion (23); the welding portion (21) is used for welding in the opening switch structure (11); the welding portion (21), the buffer portion (22) and the conductive portion (23) are all conductive; the diameter of one end of the buffer portion (22) close to the conductive portion (23) is smaller than the diameter of one end of the buffer portion (22) close to the welding portion (21); and the outer surface of the buffer portion (22) is an arc surface.
8. A pole-mounted vacuum circuit breaker with a trip coil disconnect prevention function according to claim 7, characterized in that: A stress groove (24) is provided on the buffer portion (22), and the stress groove (24) extends along the circumference of the buffer portion (22).