CN117059417A - Neutral line overlapping mechanism for dual-power transfer switch - Google Patents

Neutral line overlapping mechanism for dual-power transfer switch Download PDF

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Publication number
CN117059417A
CN117059417A CN202311154937.XA CN202311154937A CN117059417A CN 117059417 A CN117059417 A CN 117059417A CN 202311154937 A CN202311154937 A CN 202311154937A CN 117059417 A CN117059417 A CN 117059417A
Authority
CN
China
Prior art keywords
standby
common
pin
standby side
common side
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311154937.XA
Other languages
Chinese (zh)
Inventor
黄浙勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Pheteng Electrical Appliance Co ltd
Original Assignee
Suzhou Pheteng Electrical Appliance Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Pheteng Electrical Appliance Co ltd filed Critical Suzhou Pheteng Electrical Appliance Co ltd
Priority to CN202311154937.XA priority Critical patent/CN117059417A/en
Publication of CN117059417A publication Critical patent/CN117059417A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The invention discloses a neutral line overlapping mechanism for a dual-power transfer switch, which comprises a neutral electrode switch group, wherein the neutral electrode switch group comprises a common side moving contact, a common side fixed contact, a standby side moving contact, a standby side fixed contact, a mounting frame, a transmission plate, a common side strip-shaped ring, a standby side strip-shaped ring, a common side spring, a standby side spring, a common side swinging piece and a standby side swinging piece, the transmission plate is hinged with the mounting frame, the top surface of the transmission plate comprises a common side abutting surface and a standby side abutting surface, the common side moving contact and the transmission plate are connected through the common side strip-shaped ring, the common side moving contact is connected with the common side spring, the standby side moving contact and the transmission plate are connected through the standby side strip-shaped ring, the standby side moving contact is connected with the standby side spring, the common side swinging piece can be in abutting contact with the common side abutting surface, and the standby side swinging piece can be in abutting contact with the standby side abutting surface. The neutral line overlapping mechanism for the dual-power transfer switch can avoid the problem of neutral line emptying.

Description

Neutral line overlapping mechanism for dual-power transfer switch
Technical Field
The invention relates to a neutral line overlapping mechanism for a dual power transfer switch.
Background
The double-power switch is widely applied to various places needing uninterrupted power supply, and realizes automatic conversion of a load circuit between two paths of power supplies so as to ensure the reliability of power supply of a user. The double-power switch comprises a phase pole switch group and a neutral pole switch group, wherein the phase pole switch group and the neutral pole switch group are provided with a common power supply side and a standby power supply side, the common power supply side is switched on to supply power during normal operation, and when faults such as short circuit and the like occur on the common power supply side, the double-power switch can trip to the standby power supply side to ensure normal power supply. However, since the neutral line, like the other phase lines, is temporarily disconnected during the switching of the power supply, this causes a fluctuation in the voltage of some consumers and thus effects and losses. For this purpose, a corresponding technical solution is required to be designed to solve the existing technical problems.
Disclosure of Invention
The invention aims to provide a neutral line overlapping mechanism for a dual-power transfer switch, which has reasonable structure, so that the problem of neutral line emptying in the transfer process of the dual-power transfer switch can be avoided, and the stability and the safety of the operation of an electric load are improved.
In order to achieve the above purpose, the technical scheme of the invention is to design a neutral line overlapping mechanism for a dual-power transfer switch, which comprises a neutral pole switch group, a phase pole switch group, a common side operating mechanism and a standby side operating mechanism, wherein the neutral pole switch group and the phase pole switch group both comprise a common side moving contact, a common side fixed contact, a standby side moving contact and a standby side fixed contact, the common side moving contact is connected with a common side power connection terminal, the standby side moving contact is connected with a standby side power connection terminal, and the common side fixed contact and the standby side fixed contact are commonly connected with a load connection terminal; the normal side operating mechanism comprises a normal side conversion square shaft, when the normal side conversion square shaft rotates, a normal side moving contact and a normal side fixed contact in the phase pole switch group perform switching-off and switching-on conversion, and the standby side operating mechanism comprises a standby side conversion square shaft, when the standby side conversion square shaft rotates, a standby side moving contact and a standby side fixed contact in the phase pole switch group perform switching-off and switching-on conversion; the neutral pole switch group also comprises a mounting frame, a transmission plate, a common side strip-shaped ring, a standby side strip-shaped ring, a common side spring, a standby side spring, a common side swinging part and a standby side swinging part, wherein the mounting frame is arranged between the common side moving contact and the standby side moving contact, the transmission plate is arranged above the common side moving contact and the standby side moving contact, the middle position of the transmission plate is hinged with the top of the mounting frame through a shaft pin, the top surface of the transmission plate comprises a common side abutting surface and a standby side abutting surface, the common side abutting surface and the standby side abutting surface are respectively positioned at two ends of the transmission plate, the transmission plate is provided with a common side first pin column and a standby side first pin column, the common side first pin column and the standby side first pin column are respectively positioned at two sides of the shaft pin, the middle position of the common side moving contact is provided with a common side second pin column, the common side strip-shaped ring is sleeved on the outer sides of the common side first pin and the common side second pin, a common side third pin is arranged below the common side fixed contact, the common side spring is connected between the common side second pin and the common side third pin, the middle position of the standby side movable contact is provided with a standby side second pin, the standby side strip-shaped ring is sleeved on the outer sides of the standby side first pin and the standby side second pin, the lower part of the standby side static contact is provided with a standby side third pin, the standby side spring is connected between the standby side second pin and the standby side third pin, the common side swinging part is arranged above the common side abutting surface, the common side swinging part is provided with a common side square hole, the bottom end of the common side swinging part can be abutted and contacted with the common side abutting surface, the common side conversion square shaft is arranged in the common side square hole in a penetrating way, the standby side swinging piece is arranged above the standby side abutting face, a standby side square hole is formed in the standby side swinging piece, the bottom end of the standby side swinging piece can be in abutting contact with the standby side abutting face, and the standby side conversion square shaft is arranged in the standby side square hole in a penetrating mode.
Preferably, the common side abutting surface and the standby side abutting surface are inclined surfaces.
Preferably, the neutral pole switch group further comprises a shell, and the common side moving contact, the standby side moving contact, the common side swinging piece and the standby side swinging piece are all rotatably connected in the shell.
Preferably, a support is arranged at the top of the load wiring terminal, the common side fixed contact and the standby side fixed contact are arranged at the top of the support, and the common side third pin and the standby side third pin are arranged in the support.
Preferably, the mounting frame is fixedly connected with the bracket.
The invention has the advantages and beneficial effects that: the neutral line overlapping mechanism for the double-power-supply change-over switch is reasonable in structure, so that the problem of neutral line vacation in the change-over process of the double-power-supply switch can be avoided, and the stability and the safety of the operation of an electric load are improved. The neutral line overlapping mechanism has the advantages of high reliability, long service life and low manufacturing cost.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Description of the embodiments
The following describes the embodiments of the present invention further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
The technical scheme of the invention is as follows:
as shown in fig. 1, the neutral line overlapping mechanism for the dual-power transfer switch comprises a neutral pole switch group, a phase pole switch group, a common side operating mechanism and a standby side operating mechanism, wherein the neutral pole switch group and the phase pole switch group comprise a common side moving contact 1, a common side fixed contact 2, a standby side moving contact 3 and a standby side fixed contact 4, the common side moving contact 1 is connected with a common side power connection terminal 5, the standby side moving contact 3 is connected with a standby side power connection terminal 6, and the common side fixed contact 2 and the standby side fixed contact 4 are commonly connected with a load connection terminal 7; the normal side operating mechanism comprises a normal side conversion square shaft, when the normal side conversion square shaft rotates, a normal side moving contact 1 and a normal side fixed contact 2 in the phase pole switch group perform switching-off and switching-on conversion, the standby side operating mechanism comprises a standby side conversion square shaft, and when the standby side conversion square shaft rotates, a standby side moving contact 3 and a standby side fixed contact 4 in the phase pole switch group perform switching-off and switching-on conversion; the neutral pole switch group further comprises a mounting frame 8, a transmission plate 9, a common side strip-shaped ring 10, a standby side strip-shaped ring 11, a common side spring 12, a standby side spring 13, a common side swinging member 14 and a standby side swinging member (not shown in the figure), wherein the mounting frame 8 is arranged between the common side moving contact 1 and the standby side moving contact 3, the transmission plate 9 is arranged above the common side moving contact 1 and the standby side moving contact 3, the middle position of the transmission plate 9 is hinged with the top of the mounting frame 8 through a shaft pin 15, the top surface of the transmission plate 9 comprises a common side abutting surface 91 and a standby side abutting surface 92, the common side abutting surface 91 and the standby side abutting surface 92 are respectively positioned at two ends of the transmission plate 9, the transmission plate 9 is provided with a common side first pin 16 and a standby side first pin 17, the common side first pin 16 and the standby side first pin 17 are respectively positioned at two sides of the shaft pin 15, the middle position of the movable contact 1 on the common side is provided with a second pin 18 on the common side, the strip-shaped ring 10 on the common side is sleeved outside the first pin 16 and the second pin 18 on the common side, the lower part of the fixed contact 2 on the common side is provided with a third pin 19 on the common side, the spring 12 on the common side is connected between the second pin 18 and the third pin 19 on the common side, the middle position of the movable contact 3 on the standby side is provided with a second pin 20 on the standby side, the strip-shaped ring 11 on the standby side is sleeved outside the first pin 17 and the second pin 20 on the standby side, the lower part of the fixed contact 4 on the standby side is provided with a third pin 21 on the standby side, the spring 13 on the standby side is connected between the second pin 20 and the third pin 21 on the standby side, the swinging piece 14 on the common side is arranged above the abutting surface 91 on the standby side, the common side swinging member 14 is provided with a common side square hole 141, the bottom end of the common side swinging member 14 can be in contact with the common side abutting surface 91, the common side conversion square shaft is arranged in the common side square hole 141 in a penetrating manner, the standby side swinging member is arranged above the standby side abutting surface 92, the standby side swinging member is provided with a standby side square hole, the bottom end of the standby side swinging member can be in contact with the standby side abutting surface 92, and the standby side conversion square shaft is arranged in the standby side square hole in a penetrating manner.
Further, the normal side abutment surface 91 and the standby side abutment surface 92 are inclined surfaces.
Further, the neutral pole switch group further includes a housing 22, and the common side moving contact 1, the standby side moving contact 3, the common side swinging member 14 and the standby side swinging member are all rotatably connected in the housing 22.
Further, a bracket 23 is arranged at the top of the load connecting terminal 7, the common side fixed contact 2 and the standby side fixed contact 4 are arranged at the top of the bracket 23, and the common side third pin 19 and the standby side third pin 21 are arranged in the bracket 23.
Further, the mounting frame 8 is fixedly connected with the bracket 23.
The invention relates to a neutral line overlapping mechanism for a dual-power transfer switch, which has the working principle that: when the electric load is powered by the common power supply, the common side moving contact 1 and the common side fixed contact 2 in the phase pole switch group are in a closing state, meanwhile, the common side moving contact 1 and the common side fixed contact 2 in the neutral pole switch group are in a closing state, at the moment, the bottom end of the common side swinging part 14 is in abutting contact with the common side abutting surface 91 of the transmission plate 9, and downward pressure is applied to the right end of the transmission plate 9, so that the right end of the transmission plate 9 is inclined downwards, the left end is tilted upwards, at the moment, a space is reserved between the common side second pin 18 and the inner wall of the lower end of the common side strip-shaped ring 10, and the standby side spring 13 is in a stretching state. When an electric load is converted from power supplied by a common power supply to power supplied by a standby power supply, a common side conversion square shaft is driven to rotate anticlockwise, so that a common side movable contact 1 and a common side fixed contact 2 in a phase pole switch group are separated, meanwhile, the common side conversion square shaft drives a common side swinging piece 14 to rotate anticlockwise, a common side swinging piece 14 and a common side abutting surface 91 are gradually separated, at the moment, a standby side movable contact 3 in a neutral pole switch group rotates under the elastic restoring force of a standby side spring 13 until the standby side movable contact is closed with a standby side fixed contact 4, meanwhile, the standby side movable contact 3 pulls a transmission plate 9 to rotate to be in a horizontal state through a standby side strip-shaped ring 11, and an acting force is not applied to the common side second pin 18 and the common side movable contact 1 in the rotation process of the transmission plate 9, and the common side movable contact 1 is kept in a closed state, so that overlapping is realized; then the standby side conversion square shaft is driven to rotate anticlockwise, so that the standby side moving contact 3 and the standby side fixed contact 4 in the phase pole switch group are switched on, meanwhile, the standby side conversion square shaft drives the standby side swinging piece to rotate anticlockwise, the bottom end of the standby side swinging piece is in abutting contact with the standby side abutting surface 92, downward pressure is applied to the left end of the transmission plate 9, the left end of the transmission plate 9 is inclined downwards, the right end of the transmission plate 9 is tilted upwards, in the process, the transmission plate 9 pulls the common side moving contact 1 to rotate through the common side strip-shaped ring 10, the common side moving contact 1 and the common side fixed contact 2 are separated, meanwhile, the common side moving contact 1 stretches the common side spring 12 through the common side second pin 18, so that power supply conversion is completed, and at the moment, the power supply load is supplied by the standby power supply. When the dual power transfer switch needs to be switched from being powered by the standby power supply to being powered by the common power supply, the whole process is reverse to that described above.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims (5)

1. The neutral line overlapping mechanism for the double-power-supply change-over switch comprises a neutral pole switch group, a phase pole switch group, a common side operating mechanism and a standby side operating mechanism, wherein the neutral pole switch group and the phase pole switch group comprise a common side moving contact, a common side fixed contact, a standby side moving contact and a standby side fixed contact, the common side moving contact is connected with a common side power supply connecting terminal, the standby side moving contact is connected with a standby side power supply connecting terminal, and the common side fixed contact and the standby side fixed contact are commonly connected with a load connecting terminal; the normal side operating mechanism comprises a normal side conversion square shaft, when the normal side conversion square shaft rotates, a normal side moving contact and a normal side fixed contact in the phase pole switch group are subjected to switching-off and switching-on conversion, the standby side operating mechanism comprises a standby side conversion square shaft, when the standby side conversion square shaft rotates, a standby side moving contact and a standby side fixed contact in the phase pole switch group are subjected to switching-off and switching-on conversion, and the neutral pole switch group is characterized by further comprising a mounting frame, a transmission plate, a normal side strip-shaped ring, a standby side strip-shaped ring, a normal side spring, a standby side spring, a normal side swing piece and a standby side swing piece, wherein the mounting frame is arranged between the normal side moving contact and the standby side moving contact, the transmission plate is arranged above the normal side moving contact and the standby side moving contact, the middle position of the transmission plate is hinged with the top of the mounting frame through a shaft pin, the top surface of the transmission plate comprises a common side abutting surface and a standby side abutting surface, the common side abutting surface and the standby side abutting surface are respectively positioned at two ends of the transmission plate, the transmission plate is provided with a common side first pin and a standby side first pin, the common side first pin and the standby side first pin are respectively positioned at two sides of a shaft pin, the middle position of a common side moving contact is provided with a common side second pin, a common side strip-shaped ring is sleeved at the outer sides of the common side first pin and the common side second pin, a common side third pin is arranged below the common side static contact, a common side spring is connected between the common side second pin and the common side third pin, the middle position of the standby side moving contact is provided with a standby side second pin, a standby side strip-shaped ring is sleeved at the outer sides of the standby side first pin and the standby side second pin, the lower part of the standby side static contact is provided with a standby side third pin, the standby side spring is connected between the standby side second pin and the standby side third pin, the common side swinging piece is arranged above the common side abutting surface, the common side swinging piece is provided with a common side square hole, the bottom end of the common side swinging piece can be in abutting contact with the common side abutting surface, the side conversion square shaft is arranged in the side hole in a penetrating mode, the standby side swinging piece is arranged above the standby side abutting face, the standby side square hole is formed in the standby side swinging piece, the bottom end of the standby side swinging piece can be in abutting contact with the standby side abutting face, and the standby side conversion square shaft is arranged in the standby side square hole in a penetrating mode.
2. The neutral line overlap mechanism for a dual power transfer switch of claim 1, wherein the common side abutment surface and the standby side abutment surface are both beveled.
3. The neutral conductor overlap mechanism for a dual power transfer switch of claim 1, wherein the neutral pole switch set further comprises a housing, and wherein the common side moving contact, the backup side moving contact, the common side swing and the backup side swing are all rotatably coupled in the housing.
4. The neutral line overlapping mechanism for a dual power conversion switch as recited in claim 1, wherein a bracket is provided on top of said load connection terminal, said common side stationary contact and said backup side stationary contact are provided on top of the bracket, and said common side third pin and said backup side third pin are provided in the bracket.
5. The neutral wire overlap mechanism for a dual power transfer switch of claim 4, wherein the mounting bracket is fixedly coupled to the bracket.
CN202311154937.XA 2023-09-08 2023-09-08 Neutral line overlapping mechanism for dual-power transfer switch Pending CN117059417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311154937.XA CN117059417A (en) 2023-09-08 2023-09-08 Neutral line overlapping mechanism for dual-power transfer switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311154937.XA CN117059417A (en) 2023-09-08 2023-09-08 Neutral line overlapping mechanism for dual-power transfer switch

Publications (1)

Publication Number Publication Date
CN117059417A true CN117059417A (en) 2023-11-14

Family

ID=88659074

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311154937.XA Pending CN117059417A (en) 2023-09-08 2023-09-08 Neutral line overlapping mechanism for dual-power transfer switch

Country Status (1)

Country Link
CN (1) CN117059417A (en)

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