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CN-122025465-A - Isolating switch for inflatable switch cabinet

CN122025465ACN 122025465 ACN122025465 ACN 122025465ACN-122025465-A

Abstract

The invention relates to the technical field of isolating switches, in particular to an isolating switch mounting plate for an inflatable switch cabinet, wherein a plurality of groups of switch mechanisms are arranged on the upper side of the mounting plate, each group of switch mechanisms consists of a conducting end, an electric connection end and an electric connection switch knife, when current in a circuit needs to be conducted, the switch mechanisms are firstly used, the mounting plate is used for transmitting the current to an external circuit, on the one hand, after the current is conducted, the switch mechanisms are locked through an error touch prevention mechanism, the switch mechanisms are prevented from being operated reversely due to error operation, further the error operation in a circuit on state is prevented, the normal operation and the service life of the device are ensured, and a series of safety accidents caused by the electrified error operation of the device are prevented.

Inventors

  • SI TAO
  • ZHAO TING
  • Jia Tielian

Assignees

  • 河北红麟电气设备科技有限公司

Dates

Publication Date
20260512
Application Date
20260323

Claims (8)

  1. 1. The isolating switch for the inflatable switch cabinet comprises a mounting plate (1) and is characterized in that a plurality of groups of switch mechanisms are arranged on the upper side of the mounting plate (1), each group of switch mechanisms consists of a conductive end (2), an electric connection end (201) and an electric connection knife (202), the electric connection ends (201) and the conductive ends (2) are fixedly connected to the upper end of the mounting plate (1), the electric connection ends (201) are electrically connected with an external circuit, the electric connection knife (202) is rotatably connected into the conductive ends (2) through a rotating shaft, the electric connection knife (202) is clamped with the electric connection ends (201), the electric connection knife (202) and the conductive ends (2) are electrically connected, a plurality of groups of anti-error contact mechanisms and disconnecting mechanisms are arranged on the upper side of the mounting plate (1), and are used for preventing the electric connection knife (202) from rotating and being separated from the electric connection knife (202) when the electric connection knife (202) is powered on, and the electric connection knife (202) is automatically pushed to the electric connection knife (201) when the electric connection knife (202) is disconnected from the electric connection knife (201).
  2. 2. The isolating switch for the inflatable switch cabinet according to claim 1, wherein the upper end of the mounting plate (1) is fixedly connected with a placement plate (101), and a plurality of connecting holes are formed in the upper end of the placement plate (101).
  3. 3. The isolating switch for the inflatable switch cabinet according to claim 2, wherein each group of the anti-false touch mechanism is composed of a trigger plate (3), two electromagnets (311), two metal blocks (310), two pulling rods (301), two placing grooves (302), two first springs (307), two stress rods (306), two abutting blocks (305) and a trigger assembly, the trigger plate (3) is arranged on the upper side of the mounting plate (1), the two electromagnets (311) are respectively and fixedly connected to two ends of the mounting plate (1), the two metal blocks (310) are respectively and fixedly connected to two ends of the trigger plate (3), the two pulling rods (301) are respectively and fixedly connected to the upper ends of the trigger plate (3), the two placing grooves (302) are respectively arranged at the adjacent ends of the two pulling rods (301), the two first springs (307) are respectively and fixedly connected to the inner walls of one sides of the two placing grooves (302), one ends of the two stress rods (306) are respectively and fixedly connected to the two stress rods (305) which extend out of the two abutting blocks (305) to the two stress rods (306) respectively, the two stress rods (306) extend out of the two supporting blocks (305) to be matched with one end of the two stress rods (305) to be fixedly connected to one end of the two stress rods (305), the two metal blocks (310) are magnetically connected with the two electromagnets (311).
  4. 4. The isolating switch for the inflatable switch cabinet according to claim 3, wherein each group of the triggering components consists of a triggering shell (103), a chute (104) and a mounting rod (102), the mounting rod (102) is fixedly connected to the upper end of the mounting plate (101), the triggering shell (103) is fixedly connected to the upper end of the mounting rod (102), the chute (104) is formed in one side inner wall of the triggering shell (103), and the stress rod (306) is attached to the chute (104).
  5. 5. The isolating switch for the inflatable switch cabinet according to claim 4, wherein the disconnecting mechanism comprises a second spring (308) and a telescopic rod (309), the telescopic rod (309) is fixedly connected to the close ends of the trigger plate (3) and the mounting plate (101), and the second spring (308) is sleeved on the circumferential surface of the telescopic rod (309).
  6. 6. The isolating switch for the inflatable switch cabinet according to claim 5, wherein limiting grooves (303) are formed in the lower inner walls of the two placing grooves (302), limiting blocks (304) are fixedly connected to the lower ends of the two abutting blocks (305), and the two limiting blocks (304) are respectively and slidably connected to the two limiting grooves (303).
  7. 7. The isolating switch for the inflatable switch cabinet according to claim 6, wherein a plurality of threaded holes are formed in the upper end of the mounting plate (1), and one end of the abutting block (305) is an inclined plane.
  8. 8. The isolating switch for an air-filled switchgear as claimed in claim 7, wherein one end of said force-receiving rod (306) is in the form of a ball and said chute (104) is in the form of an inclined surface.

Description

Isolating switch for inflatable switch cabinet Technical Field The invention relates to the technical field of isolating switches, in particular to an isolating switch for an inflatable switch cabinet. Background The isolating switch is a switching device which is mainly used for isolating power supply, switching operation and switching on and off small current circuit and has no arc extinguishing function, when the isolating switch is in a separated position, the contacts have an insulation distance meeting the specified requirement and obvious breaking marks, and when the isolating switch is in a closed position, the isolating switch can bear current under normal loop conditions and current under abnormal conditions (such as short circuit) within specified time. The air charging cabinet is 12kV gas-insulated metal-enclosed switchgear, the main switch can adopt a permanent magnet or spring mechanism vacuum breaker, and is suitable for power distribution network transformation of complex environments such as high altitude, humidity, pollution and the like, and occasions such as metallurgy, petrochemical industry, urban rail transit and the like. The isolating switch is key equipment for forming obvious electric disconnection points and guaranteeing the safety of maintenance personnel in the power system, and because the isolating switch is not provided with the capacity of breaking load current in design, the on-load pulling of the isolating switch can generate strong electric arcs, so that major accidents of equipment damage and even casualties are caused, and misoperation prevention of the isolating switch is a core requirement of an electric safety regulation; At present, the operation sequence between the disconnecting switch and the circuit breaker is forcedly regulated by mechanical interlocking in the industry, but the existing interlocking belongs to 'position-related' locking, namely only the mechanical position of related equipment (such as the circuit breaker) is detected, but the true physical state (whether current exists) of a loop where the disconnecting switch is located is not directly detected, which has fatal risks when the system operation mode is complex, for example, when a local circuit breaker is disconnected and the circuit is reversely powered from the opposite side in the scene of double-power circuit or distributed power supply access, current still exists in the loop, at the moment, the interlocking based on the position of the circuit breaker allows the disconnecting switch to be operated, so that the malignant misoperation accident of 'on-load switching off' is caused, the disconnecting switch is damaged and burnt down, and a series of accidents are caused. Disclosure of Invention The invention aims to provide a disconnecting switch for an inflatable switch cabinet, which solves the problems that in the prior art, a mechanical interlocking mechanism is easy to cause misoperation of the disconnecting switch, and a series of accidents are caused by damage and burning of the disconnecting switch. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides an isolator for aerify cubical switchboard, includes the mounting panel, the upside of mounting panel is provided with multiunit switch mechanism, every group switch mechanism comprises conducting terminal, electric terminal and electric switch sword, electric terminal and the equal fixed connection of conducting terminal are in the upper end of mounting panel, and electric terminal and external circuit electric connection, electric switch sword rotates through the pivot and connects in the conducting terminal, and electric switch sword and electric terminal looks joint, electric connection between electric terminal, electric switch sword and the conducting terminal, the upside of mounting panel is provided with multiunit and prevents mistake and touch the mechanism and break away from, mistake is prevented touching the mechanism and is leaned on with electric switch sword for when electric switch sword circular telegram, prevent its rotation and break away from the joint of electric terminal, break away from the mechanism and be leaned on with electric switch sword, be used for when electric switch sword outage, automatic with electric switch sword upwards push and break away from its and connect with electric switch sword. Further, the upper end fixedly connected with of mounting panel settles the board, a plurality of connecting holes have been seted up to the upper end of settling the board. Further, every group prevent mistake touch mechanism by trigger plate, two electro-magnet, two metal pieces, two pull the pole, two standing grooves, two first springs, two atress poles, two support and lean on the piece and trigger the subassembly and constitute, the upside of mounting panel is located to the trigger plate, two the electro-magnet is fixed connection