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CN-224217386-U - Circuit breaker closing prevention locking mechanism with feedback

CN224217386UCN 224217386 UCN224217386 UCN 224217386UCN-224217386-U

Abstract

The utility model discloses an anti-closing locking mechanism of a circuit breaker with feedback, which comprises a lock catch, a poking baffle shaft, a power module and a signal feedback module, wherein the lock catch, the poking baffle shaft, the power module and the signal feedback module are arranged in a circuit breaker body, the poking baffle shaft is rotatably arranged in the circuit breaker body and can selectively enter a limiting position or a releasing position, the poking baffle shaft can interfere with the lock catch when being in the limiting position, the poking baffle shaft can be separated from the lock catch when being in the releasing position, the power module is in transmission connection with the poking baffle shaft, and the signal feedback module can output an electronic trigger signal representing that the poking baffle shaft is in a closing allowable position when the poking baffle shaft is in the releasing position. The utility model has the advantages that the circuit breaker body can actively output an electronic trigger signal to the interlocking control system when the circuit breaker body is in a closing-allowed position, thereby realizing closed-loop detection and control of the interlocking state and effectively improving the automation and the reliability.

Inventors

  • XIONG BANGGUO
  • WANG WEIBIN
  • YU ZHENHUA
  • SHEN JIAHE

Assignees

  • 浙江东方职业技术学院

Dates

Publication Date
20260508
Application Date
20260409

Claims (8)

  1. 1. The circuit breaker closing prevention locking mechanism with feedback comprises a lock catch (11) which is arranged in a circuit breaker body and is used for realizing closing or opening by rotation, and is characterized in that a poking blocking shaft (21), a power module and a signal feedback module (31) are arranged in the circuit breaker body, the poking blocking shaft (21) is rotatably arranged in the circuit breaker body, when the poking blocking shaft (21) is driven to rotate, the poking blocking shaft can selectively enter a limiting position or a releasing position, when the poking blocking shaft (21) is in the limiting position, the poking blocking shaft can interfere with the lock catch (11) to physically block the lock catch (11) from rotating in the closing direction, and when the poking blocking shaft (21) is in the releasing position, the poking blocking shaft can be separated from the lock catch (11) to interfere with the lock catch, and the lock catch (11) can be allowed to freely rotate to the closing position; The power module is in transmission connection with the poking gear shaft (21) and is used for providing rotary driving force for switching the poking gear shaft (21) between a limiting position and a releasing position; the signal feedback module (31) can output an electronic trigger signal representing that the poking baffle shaft (21) is in a closing allowable position when the poking baffle shaft (21) is in a release position.
  2. 2. The circuit breaker closing prevention locking mechanism with feedback as set forth in claim 1 wherein the power module has a rear stage output tooth (41), the rear stage output tooth (41) is rotatably disposed in the circuit breaker body and is located at the side of the signal feedback module (31), and a following trigger block (42) is fixedly disposed on the fluted disc plane of the rear stage output tooth (41) at a position deviated from the rotation center of the fluted disc plane; When the power module drives the toggle blocking shaft (21) to rotate to a release position, the rear-stage output teeth (41) are synchronously driven to rotate, so that the following trigger block (42) moves to the sensing part of the signal feedback module (31), and the signal feedback module (31) is triggered to generate the electronic trigger signal.
  3. 3. The circuit breaker closing prevention locking mechanism with feedback as set forth in claim 2 wherein the signal feedback module (31) is a non-self-locking micro switch, and the following trigger block (42) is configured to enable the signal feedback module (31) to generate the electronic trigger signal by squeezing an induction part of the signal feedback module (31).
  4. 4. The circuit breaker closing prevention locking mechanism with feedback as set forth in claim 2 wherein the power module has a middle section output tooth (51), the middle section output tooth (51) is rotatably disposed in the circuit breaker body and is close to the toggle blocking shaft (21), and a bump (52) is fixedly disposed on the fluted disc plane of the middle section output tooth (51) at the position of the rotation center; When the middle section output tooth (51) rotates under the drive of the power module, the lug (52) on the middle section output tooth can be contacted with the poking baffle shaft (21) so as to push the poking baffle shaft (21) to enter a release position.
  5. 5. The circuit breaker closing prevention locking mechanism with feedback as set forth in claim 4, wherein the power module comprises a servo motor (61), a worm wheel (62), a worm and a transmission gear set, wherein the servo motor (61) is fixed in the circuit breaker body, the worm is connected with the output of the servo motor (61), the worm wheel (62) is rotatably arranged on the circuit breaker body and forms transmission with the worm, the transmission gear set is rotatably arranged on the circuit breaker body and forms transmission with the worm wheel (62), and the transmission gear set provides rotary driving force for the middle section output gear (51) through the transmission gear set; The middle section output teeth (51) are meshed with the rear stage output teeth (41).
  6. 6. The circuit breaker closing prevention locking mechanism with feedback as set forth in claim 1 wherein the toggle blocking shaft (21) is provided with a guiding corner (211) pointing to the side of the lock catch (11), and the lower end of the guiding corner (211) is provided with an arc limiting surface (2111) capable of interfering with the lock catch (11).
  7. 7. The circuit breaker anti-closing lockout mechanism with feedback of claim 1 wherein the toggle blocking shaft (21) has a contact portion (212) proximate the tab (52).
  8. 8. The circuit breaker closing prevention locking mechanism with feedback as set forth in claim 6 wherein the toggle blocking shaft (21) has a horizontal force receiving portion (213) at the other end of the guide corner (211), the circuit breaker body is fixedly provided with a receiving seat (81), the receiving seat (81) has an opening facing the force receiving portion (213), an electromagnet (82) is disposed in the receiving seat (81), and an iron core of the electromagnet (82) extends out of the opening of the receiving seat (81) and is connected with the force receiving portion (213).

Description

Circuit breaker closing prevention locking mechanism with feedback Technical Field The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker closing-preventing locking mechanism with feedback. Background In a multi-power supply system such as a ship, a power station and the like, in order to prevent serious accidents (such as unintended parallel connection of shore power and a generator set, incorrect connection between different power supplies through a bridging switch and the like) caused by irregular operation, a complex interlocking control system is usually required to be arranged. The interlocking control system has the core functions of monitoring the opening and closing states of all the circuit breakers in real time, and implementing locking or emergency breaking control on the related circuit breakers according to strict logic rules (for example, avoiding parallel connection of shore power and a plurality of units, limiting the short-time parallel connection conversion time of a single machine and the shore power, prohibiting power supply conversion through a bridging switch and the like) so as to ensure the safety and stability of power supply. One key basis for implementing the high-level interlocking function is that each controlled breaker (such as a generator breaker, a shore power breaker, a bridging breaker and the like) in the interlocking control system must be provided with a bottom-layer actuating mechanism capable of receiving an interlocking instruction, executing physical locking/releasing actions and actively and reliably feeding back an accurate state of 'allowed closing' to the interlocking control device after locking is released. However, in the prior art, as disclosed in the patent application number CN202421388145.9, a circuit breaker closing-preventing locking mechanism with feedback and a circuit breaker can only realize a basic locking function, and there is a core defect that a clear, unambiguous and electrically identifiable state confirmation signal cannot be provided to an interlocking control system at the moment of releasing a locking condition and allowing closing. This allows the interlock control system to output only the lock command, but cannot automatically verify whether the command has been properly executed and enter the "allow close" ready state. The final state judgment of the interlocking control system still depends on manual inspection, so that not only is the automation level and response speed reduced, but also hidden danger is left for misoperation, and the interlocking protection requirements of modern ships and power stations on high reliability and full state monitoring are difficult to meet. Therefore, a circuit breaker closing prevention locking mechanism with feedback is needed, the circuit breaker closing prevention locking mechanism can be used as a reliable execution unit to respond to locking and releasing commands of an interlocking control system to realize physical blocking, has built-in state feedback capability, and can accurately generate an electronic trigger signal at a releasing position, so that state feedback necessary for closed-loop control is provided for an upper-layer interlocking device, and the reliability and the intelligent level are fundamentally improved. Disclosure of utility model The utility model aims to provide a circuit breaker closing-preventing locking mechanism with feedback, which aims to solve the problems in the background technology. The technical aim of the utility model is realized by the following technical scheme: The circuit breaker closing prevention locking mechanism with feedback comprises a lock catch which is arranged in a circuit breaker body and can realize opening or closing by rotation; the circuit breaker comprises a circuit breaker body, a toggle blocking shaft, a power module and a signal feedback module, wherein the toggle blocking shaft is rotatably arranged in the circuit breaker body, and can selectively enter a limiting position or a releasing position when being driven to rotate; The power module is in transmission connection with the poking gear shaft and is used for providing rotary driving force for switching the poking gear shaft between the limiting position and the releasing position; The signal feedback module can output an electronic trigger signal representing that the poking gear shaft is in a closing allowable position when the poking gear shaft is in a release position. By adopting the technical scheme, the closed loop detection and control of the interlocking state are realized, the toggle blocking shaft can be accurately switched to the limiting position or the releasing position under the drive of the power module, so that the closing action is reliably and physically blocked or allowed, and the effective execution of the interlocking instruction is ensured. The power module is provided with a rear-stage output tooth which