Low voltage air switch with anti-misoperation locking device
By introducing an anti-missive locking device into the low-voltage air switch, the design of the lock tongue and padlock is used to solve the problem of high risk of miscombination in the existing technology, ensuring the independent operation of the station area after the emergency mutual supply of faults is completed. sex.
Patent Information
- Application Number
- CN201910792836.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-08-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2039-08-26
AI Technical Summary
The existing low-voltage air-opening switch lacks a reliable locking device, which leads to a high risk of miscombination after the emergency mutual supply of faults and cannot guarantee the reliability of independent operation of the station area.
A low-voltage air-opening switch with anti-error operation locking device is designed, including an operating handle, a lock tongue, a padlock and a key. It is connected to the padlock through the lock tongue. The key is used to control the handle operation to ensure that after the emergency mutual supply of the fault is completed. Avoid misunderstandings.
It effectively reduces the risk of mis-closing the switch, ensures independent operation reliability in the backend area of the emergency mutual supply of faults, and avoids misoperation accidents.
Smart Images
Figure CN110459421B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of safety locking of low-voltage circuit breakers for connecting power sources in the electric power industry, and is a low-voltage circuit breaker with a locking device to prevent misoperation. Background Art
[0002] With the development of the power system and the improvement of people's living standards, power users have gradually increased their requirements for power quality and power supply reliability, especially for important low-voltage terminal users, requiring the distribution network directly connected to customers to continuously provide them with high-quality power services. As for the distribution network itself, the "2016~2020" planning project has been further promoted. The 10 kV and above distribution network lines have been relatively strong and reliable. The urban low-voltage distribution network lines are restricted by corridors and cannot be reasonably laid out. In order to achieve emergency mutual supply, some low-voltage substations are mostly interconnected by hand-in-hand low-voltage distribution boxes. In the event of a power outage in a neighboring substation, emergency transfer can be made to each other to improve power supply reliability. The current low-voltage circuit breaker does not have a reliable locking device, and cannot guarantee the accidental closing of the circuit breaker after the fault emergency mutual supply is completed, and cannot guarantee the reliability of independent operation of the substation. Summary of the invention
[0003] The present invention provides a low-voltage circuit breaker with an anti-misoperation locking device, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the problems of unreliable operation and poor safety of the existing low-voltage circuit breaker.
[0004] The technical scheme of the present invention is achieved through the following measures: a low-voltage air switch with an anti-misoperation locking device, comprising a low-voltage air switch body, an operating handle and an anti-misoperation locking device, a mounting hole is provided in the middle of the right side of the low-voltage air switch body, the mounting hole is rectangular, a boss is fixedly installed on the right side of the low-voltage air switch body corresponding to the mounting hole position, an operating handle whose right end can be rotated upward is provided in the mounting hole, the right end of the operating handle is located on the right side of the boss, an anti-misoperation locking device is provided on the right side of the operating handle, the anti-misoperation locking device comprises a lock tongue, a padlock and a key, a lock tongue is provided on the outside of the operating handle, the lock tongue comprises a limit section, an upper connecting section, a curved section and a lower connecting section from top to bottom, the limit section is inclined with a left high and a right low shape, the upper end of the left side of the limit section abuts against the inner side of the boss corresponding to the mounting hole position, and an upper connecting section is installed on the right side of the lower end of the limit section The lower side of the upper connecting section contacts with the upper side of the operating handle at the corresponding position, and the right side of the upper connecting section is connected with a curved surface section located on the right side of the operating handle, the curved surface section is an arc-shaped curved surface formed by the upper connecting section moving along an arc convex to the right, and a lower connecting section is installed on the left side of the lower end of the curved surface section. The upper side of the lower connecting section is located below the operating handle, and the lower connecting section is inclined in a shape of left higher and right lower. A first through hole that runs through from top to bottom is provided on the right part of the upper connecting section, and a second through hole that runs through from top to bottom is provided in the center of the right part of the operating handle corresponding to the position of the first through hole, and a third through hole that runs through from top to bottom is provided on the lower connecting section corresponding to the position of the second through hole, and the lock tongue is connected with the operating handle through a padlock, a lock beam is provided on the upper part of the padlock, and the lock tongue is connected with the operating handle through the lock beam located in the first through hole, the second through hole and the third through hole, and a lock core hole is provided at the lower part of the padlock, and a key matching therewith is provided in the lock core hole.
[0005] The following are further optimizations and / or improvements to the above technical solutions:
[0006] The upper connecting section may be evenly spaced on the left and right with at least one first through hole extending vertically, and the lower connecting section corresponding to each first through hole position is provided with a third through hole extending vertically.
[0007] The right side of the lower end of the above-mentioned limiting section can be smoothly transitioned to the left side of the upper connecting section, the right side of the upper connecting section and the left side of the upper end of the curved section are smoothly transitioned, and the left side of the lower end of the curved section and the right side of the lower connecting section are smoothly transitioned.
[0008] The present invention has a reasonable and compact structure, ingenious conception, and simple manufacture. The lock tongue is connected together with a padlock and a control handle, and a key can be used to avoid accidents caused by mistaken closing of the switch. The lock tongue is pressed against the low-voltage circuit breaker body to further reduce the risk of mistaken closing of the switch, ensure that the circuit breaker is not mistakenly closed after the fault emergency mutual supply is completed, and ensure the reliability of independent operation of the substation. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Attached Figure 1 It is a schematic diagram of the main cross-sectional structure of the best embodiment of the present invention.
[0010] Attached Figure 2 For attachment Figure 1 Schematic diagram of the right view structure.
[0011] The codes in the accompanying drawings are: 1 is the low-voltage circuit breaker body, 2 is the operating handle, 3 is the limit section, 4 is the upper connecting section, 5 is the curved section, 6 is the lower connecting section, 7 is the padlock, 8 is the lock beam, 9 is the key, and 10 is the boss. DETAILED DESCRIPTION
[0012] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.
[0013] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.
[0014] The present invention will be further described below in conjunction with embodiments and drawings:
[0015] As attached Figure 1 , 2As shown, the low-voltage air switch with an anti-misoperation locking device comprises a low-voltage air switch body 1, an operating handle 2 and an anti-misoperation locking device. A mounting hole is provided in the middle of the right side of the low-voltage air switch body 1, and the mounting hole is rectangular. A boss 10 is fixedly installed on the right side of the low-voltage air switch body corresponding to the mounting hole position, and an operating handle 2 whose right end can be rotated upward is provided in the mounting hole. The right end of the operating handle 2 is located on the right side of the boss 10. An anti-misoperation locking device is provided on the right side of the operating handle 2, and the anti-misoperation locking device comprises a lock tongue, a padlock 7 and a key 9. A lock tongue is provided on the outer side of the operating handle 2, and the lock tongue comprises a limit section 3, an upper connecting section 4, a curved section 5 and a lower connecting section 6 from top to bottom. The limit section 3 is inclined with a left high and a right low shape, and the upper end of the left side of the limit section 3 abuts against the inner side of the boss 10 corresponding to the mounting hole position, and an upper connecting section 4 is installed on the right side of the lower end of the limit section 3. The upper connecting section 4 is in contact with the upper side of the operating handle 2 at the corresponding position. The right side of the upper connecting section 4 is connected with a curved section 5 located on the right side of the operating handle 2. The curved section 5 is an arc-shaped curved surface formed by the upper connecting section 4 moving along an arc convex to the right. The lower connecting section 6 is installed on the left side of the lower end of the curved section 5, and the upper side is located below the operating handle 2. The lower connecting section 6 is inclined in a shape of left high and right low. The right part of the upper connecting section 4 is provided with a first through hole that passes through from top to bottom. The right part of the operating handle 2 corresponding to the position of the first through hole is provided with a second through hole that passes through from top to bottom in the center of the right part of the operating handle 2 corresponding to the position of the first through hole. The lower connecting section 6 corresponding to the position of the second through hole is provided with a third through hole that passes through from top to bottom. The lock tongue is connected to the operating handle 2 through a padlock 7. The upper part of the padlock 7 is provided with a lock beam 8. The lock tongue is connected to the operating handle 2 through the lock beam 8 located in the first through hole, the second through hole and the third through hole. The lower part of the padlock 7 is provided with a lock core hole, and a key 9 matching it is provided in the lock core hole. According to the needs, the padlock 7 can be an existing well-known technology, such as a copper padlock 7. During use, when the emergency transfer of power supply due to a fault in an adjacent substation is completed, the lock tongue is connected to the operating handle 2 through the padlock 7, and the upper end of the lock tongue is pressed against the corresponding position of the low-voltage air switch, and then the padlock 7 is locked. The key 9 is kept by the operator. After the emergency transfer of power supply due to a fault in the adjacent substation is completed, the padlock 7 is opened with the key 9, and then the lock tongue is removed to operate the control handle. Such a setting can facilitate management and ensure the reliability of independent operation of the substation. The present invention has a reasonable and compact structure, ingenious design, and simple manufacture. The lock tongue is connected to the control handle through the padlock 7. The key 9 can avoid accidents caused by mistakenly closing the switch. The lock tongue is pressed against the low-voltage air switch body 1 to further reduce the risk of mistakenly closing the switch, ensuring that the air switch is not mistakenly closed after the emergency mutual supply of power supply due to a fault, and ensuring the reliability of independent operation of the substation.
[0016] According to actual needs, the above-mentioned low-voltage circuit breaker with anti-misoperation locking device can be further optimized and / or improved:
[0017] As attached Figure 1 , 2As shown, the upper connecting section 4 is evenly spaced with at least one first through hole extending vertically, and the lower connecting section 6 corresponding to each first through hole is provided with a third through hole extending vertically. During use, such a setting can adapt to low-voltage circuit breakers of different specifications, thereby increasing the scope of use of the present invention.
[0018] As attached Figure 1 , 2 As shown, the connection between the right side of the lower end of the limiting segment 3 and the left side of the upper connecting segment 4 is in a smooth transition shape, the connection between the right side of the upper connecting segment 4 and the left side of the upper end of the curved segment 5 is in a smooth transition shape, and the connection between the left side of the lower end of the curved segment 5 and the right side of the lower connecting segment 6 is in a smooth transition shape. In the process of use, through such an arrangement, it is possible to prevent the edges and corners of the lock tongue from causing damage to operators and equipment during installation.
[0019] The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.
Claims
1. A low-voltage circuit breaker with an anti-misoperation locking device, characterized in that The invention comprises a low-voltage air switch body, an operating handle and an anti-misoperation locking device. A mounting hole is provided in the middle part of the right side of the low-voltage air switch body, and the mounting hole is rectangular. A boss is fixedly installed on the right side of the low-voltage air switch body corresponding to the mounting hole position. An operating handle whose right end can be rotated upward is provided in the mounting hole, and the right end of the operating handle is located on the right side of the boss. An anti-misoperation locking device is provided on the right side of the operating handle, and the anti-misoperation locking device comprises a lock tongue, a padlock and a key. A lock tongue is provided on the outside of the operating handle, and the lock tongue comprises a limit section, an upper connecting section, a curved section and a lower connecting section from top to bottom. The limit section is inclined with the left side higher and the right side lower. The upper end of the left side of the limit section abuts against the inner side of the boss at the corresponding mounting hole position. An upper connecting section is installed on the right side of the lower end of the limit section, and the lower side of the upper connecting section contacts the upper side of the operating handle at the corresponding position. The right side of the upper connecting section is connected to a curved section located on the right side of the operating handle. The surface section is an arc-shaped curved surface formed by the upper connecting section moving along an arc convex to the right, a lower connecting section with an upper side located below the operating handle is installed on the left side of the lower end of the curved surface section, the lower connecting section is inclined with the left side higher and the right side lower, a first through hole which runs vertically through is provided on the right part of the upper connecting section, a second through hole which runs vertically through is provided in the center of the right part of the operating handle corresponding to the position of the first through hole, a third through hole which runs vertically through is provided on the lower connecting section corresponding to the position of the second through hole, the lock tongue is connected with the operating handle through a padlock, a lock beam is provided on the upper part of the padlock, the lock tongue is connected with the operating handle through the lock beam located in the first through hole, the second through hole and the third through hole, a lock core hole is provided on the lower part of the padlock, a key which matches it is provided in the lock core hole; at least one first through hole which runs vertically through is evenly distributed on the left and right sides of the upper connecting section, a third through hole which runs vertically through is provided on the lower connecting section corresponding to each first through hole position.
2. The low-voltage circuit breaker with an anti-misoperation locking device according to claim 1 is characterized in that The connection between the right side of the lower end of the limiting section and the left side of the upper connecting section is in a smooth transition shape, the connection between the right side of the upper connecting section and the left side of the upper end of the curved section is in a smooth transition shape, and the connection between the left side of the lower end of the curved section and the right side of the lower connecting section is in a smooth transition shape.