CN210668120U - On-load tap changer and transformer - Google Patents
On-load tap changer and transformer Download PDFInfo
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- CN210668120U CN210668120U CN201922032785.1U CN201922032785U CN210668120U CN 210668120 U CN210668120 U CN 210668120U CN 201922032785 U CN201922032785 U CN 201922032785U CN 210668120 U CN210668120 U CN 210668120U
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Abstract
The application relates to the technical field of transformer voltage regulating switches, in particular to an on-load voltage regulating switch and a transformer. The on-load voltage regulating switch comprises a shell, a vacuum switch assembly and a voltage regulating switch assembly, wherein the vacuum switch assembly and the voltage regulating switch assembly are arranged in the shell in parallel in a first direction of the shell; the vacuum switch assembly comprises a plurality of vacuum switch groups distributed in the second direction of the shell, and the voltage regulating switch assembly comprises a plurality of voltage regulating switch groups distributed in the second direction of the shell; the first direction and the second direction are vertically arranged; the vacuum switch group is electrically connected with the voltage regulating switch group in a one-to-one correspondence manner. This application is connected through the vacuum switch group that sets up each looks and the voltage regulating switch group one-to-one position correspondence of corresponding looks, has avoided the phenomenon that the wiring produces alternately between vacuum switch group and the voltage regulating switch group, and the wiring is more reasonable, has promoted the dielectric strength of switch.
Description
Technical Field
The application relates to the technical field of transformer voltage regulating switches, in particular to an on-load voltage regulating switch and a transformer.
Background
The existing on-load tap changer comprises a three-phase tap changing main loop and a three-phase tap changing transition loop, wherein a tap changing switch and a vacuum switch are arranged on each phase tap changing main loop and the tap changing transition loop, each phase tap changing switch is distributed along the length direction of the switch, each phase vacuum switch is designed at one end of the switch in the length direction, connecting wires between each phase vacuum switch and each phase tap changing switch are difficult to arrange, and the phenomenon of crossing is easily generated between the connecting wires, so that the insulation strength of the switch is low.
SUMMERY OF THE UTILITY MODEL
An object of the application is to provide an on-load tap changer and transformer for rationally arrange the connecting wire between each phase vacuum switch and each phase tap changer.
The application provides an on-load tap changer, which comprises a shell, a vacuum switch assembly and a tap changer assembly, wherein the vacuum switch assembly and the tap changer assembly are arranged in the shell, and are arranged side by side in a first direction of the shell;
the vacuum switch assembly comprises a plurality of vacuum switch sets distributed in the second direction of the shell, and the voltage regulating switch assembly comprises a plurality of voltage regulating switch sets distributed in the second direction of the shell;
the first direction and the second direction are vertically arranged;
the vacuum switch group is electrically connected with the voltage regulating switch group in a one-to-one correspondence manner.
In the above technical solution, further, the voltage regulation switch group includes a plurality of voltage regulation switches electrically connected;
the voltage regulating switch comprises a moving contact and a plurality of fixed contacts, the plurality of fixed contacts comprise a first fixed contact and a second fixed contact which are arranged at intervals, the moving contact can move between the first fixed contact and the second fixed contact, the moving contact and the first fixed contact are normally open contacts, and the moving contact and the second fixed contact are normally closed contacts;
and the moving contact of one voltage regulating switch in the voltage regulating switch group is connected with the vacuum switch group.
In the above technical solution, further, the voltage regulating switch directly connected to the vacuum switch group is a first voltage regulating switch, and a moving contact of the first voltage regulating switch is electrically connected to the vacuum switch group through a soft connecting member.
In the above technical solution, further, the moving contact of any one of the voltage regulating switches except the first voltage regulating switch in the voltage regulating switch group is electrically connected to the static contact of the voltage regulating switch connected correspondingly through a soft connecting piece.
In the above technical solution, further, a stationary terminal conductive terminal is disposed on the stationary contact, and a moving terminal conductive terminal is disposed on the moving contact, and the moving terminal conductive terminal can abut against the stationary terminal conductive terminal.
In the above technical solution, further, the moving contact includes an insulating member and a supporting member, and the supporting member is connected to the moving end conductive terminal in a supporting manner;
the supporting assembly comprises a first limiting piece, a second limiting piece and a connecting plug-in piece; the second limiting piece is fixedly connected with the insulating piece;
the first limiting piece is provided with a first limiting groove with an opening facing the insulating piece and matched with the movable end conductive terminal; the second limiting piece is provided with a second limiting groove, the opening of the second limiting piece faces away from the insulating piece and is matched with the movable end conductive terminal;
the connecting plug-in is respectively connected with the first limiting part and the second limiting part in an inserting mode, so that the movable end conductive terminals are sequentially connected in the first limiting groove and the second limiting groove in a clamping mode.
In the above technical solution, further, the movable terminal conductive terminal includes a first conductive contact, an elastic member, and a second conductive contact, which are connected in sequence;
the moving contact moves between the first fixed contact and the second fixed contact, so that the first conductive contact abuts against the fixed end conductive terminal of the first fixed contact and can compress the elastic element, or the second conductive contact abuts against the fixed end conductive terminal of the second fixed contact and can compress the elastic element.
In the above technical solution, further, the device further comprises a first operating mechanism and a plurality of second operating mechanisms;
the first operating mechanism is connected with the plurality of vacuum switch groups and is used for driving the corresponding vacuum switches in the plurality of vacuum switch groups to be simultaneously disconnected or simultaneously connected;
the plurality of operating mechanisms are connected with the corresponding voltage regulating switches in the plurality of voltage regulating switch groups and used for driving the corresponding voltage regulating switches in the plurality of voltage regulating switch groups to be simultaneously disconnected or connected.
In the above technical solution, further, the first operating mechanism includes a first permanent magnet mechanism and a first transmission member that are connected, the first permanent magnet mechanism is a monostable permanent magnet mechanism, and the first transmission member is connected to the plurality of vacuum switch sets;
the second operating mechanism comprises a second permanent magnet mechanism and a second transmission piece which are connected, the second permanent magnet mechanism is a bistable permanent magnet mechanism, and the second transmission piece is connected with the corresponding voltage regulating switches in the plurality of voltage regulating switch groups.
The application also provides a transformer, which comprises the on-load tap changer.
Compared with the prior art, the beneficial effect of this application is:
the on-load voltage regulation switch comprises a shell, a vacuum switch assembly and a voltage regulation switch assembly, wherein the vacuum switch assembly and the voltage regulation switch assembly are arranged in the shell and are arranged in parallel in a first direction of the shell; the vacuum switch assembly comprises a plurality of vacuum switch groups distributed in the second direction of the shell, and the voltage regulating switch assembly comprises a plurality of voltage regulating switch groups distributed in the second direction of the shell; the first direction and the second direction are vertically arranged; the vacuum switch group and the voltage regulating switch group are electrically connected in a one-to-one correspondence manner.
Specifically, the on-load tap changer comprises a shell, a vacuum switch assembly and a tap changer assembly and is used for carrying out on-load tap changing on a three-phase transformer, the on-load tap changer comprises a three-phase tap changing main loop and a three-phase tap changing transition loop, each phase of the three-phase transformer is connected with each phase of the tap changing main loop and each phase of the tap changing transition loop in parallel, each phase of the three-phase transformer is connected with each phase of the tap changing main loop and each phase of the tap changing transition loop respectively, wherein a main loop switch is arranged on the tap changing main loop, a transition loop switch is arranged on the tap changing transition loop, and the main loop; the main pressure regulating loop is also provided with a pressure regulating switch.
The vacuum switch assembly and the voltage regulating switch assembly are arranged side by side in the first direction of the shell, the plurality of vacuum switch groups correspond to the circuits in each phase respectively and are distributed in the second direction of the shell, the plurality of voltage regulating switch groups correspond to the circuits in each phase respectively and are distributed in the second direction of the shell, and the first direction and the second direction are vertically arranged, so that the vacuum switch groups in each phase can be correspondingly connected with the voltage regulating switch groups in corresponding phases in a one-to-one mode.
The application provides an on-load tap changer is connected through the vacuum switch group that sets up each looks and the tap changer one-to-one position correspondence of corresponding looks, has avoided the phenomenon that the wiring produces alternately between vacuum switch group and the tap changer group, and the wiring is more reasonable, has promoted the dielectric strength of switch.
The application also provides a transformer, which comprises the scheme, and the on-load tap changer has the beneficial effects, and is not repeated.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of an on-load tap changer according to a first embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a movable contact according to an embodiment of the present application under a first viewing angle;
fig. 3 is a schematic structural diagram of a movable contact according to an embodiment of the present application at a second viewing angle;
fig. 4 is a schematic structural diagram of an on-load tap changer according to a second embodiment of the present application.
In the figure: 101-a housing; 102-a vacuum switch assembly; 103-a voltage regulating switch assembly; 104-vacuum switch group; 105-voltage regulating switch group; 106-voltage regulating switch; 107-moving contact; 108-a first stationary contact; 109-a second stationary contact; 110-a first voltage regulating switch; 111-soft connection; 112-a stationary terminal conducting terminal; 113-a movable terminal conductive terminal; 114-an insulator; 115-a support assembly; 116-a first stop; 117-second limit; 118-a connection plug-in; 119-a first limiting groove; 120-a second limiting groove; 121-a first conductive contact; 122-a resilient member; 123-a second conductive contact; 124-a first operating mechanism; 125-a second operating mechanism; 126-terminal block.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example one
Referring to fig. 1 to 3, the present application provides an on-load tap changer including a housing 101, a vacuum switch assembly 102 and a tap changer assembly 103 disposed in the housing 101, the vacuum switch assembly 102 and the tap changer assembly 103 being disposed side by side in a first direction of the housing 101; the vacuum switch assembly 102 includes a plurality of vacuum switch sets 104 distributed in the second direction of the housing 101, and the voltage regulating switch assembly 103 includes a plurality of voltage regulating switch sets 105 distributed in the second direction of the housing 101; the first direction and the second direction are vertically arranged; the vacuum switch set 104 and the voltage regulating switch set 105 are electrically connected in a one-to-one correspondence manner.
Specifically, the on-load tap changer comprises a shell 101, a vacuum switch assembly 102 and a tap changer assembly 103, and is used for carrying out on-load tap changing on a three-phase transformer, the on-load tap changer comprises a three-phase tap changing main loop and a three-phase tap changing transition loop, each phase of the tap changing main loop is connected with each phase of the tap changing transition loop in parallel, each phase of the three-phase transformer is respectively connected with each phase of the tap changing main loop and the tap changing transition loop, wherein a main loop switch is arranged on the tap changing main loop, a transition loop switch is arranged on the tap changing transition loop, and the main loop switch and the transition loop switch are vacuum switches; a voltage regulating switch 106 is also arranged on the voltage regulating main loop.
The vacuum switch assembly 102 and the voltage regulating switch assembly 103 are arranged side by side in a first direction A of the shell 101, the plurality of vacuum switch sets 104 correspond to the circuits of each phase respectively and are distributed in a second direction along the shell 101, the plurality of voltage regulating switch sets 105 correspond to the circuits of each phase respectively and are distributed in the second direction along the shell 101, and the first direction and the second direction are vertically arranged, so that the vacuum switch sets 104 of each phase and the voltage regulating switch sets 105 of the corresponding phase can be correspondingly connected in a one-to-one position. Specifically, the first direction may be a width direction of the housing 101, and referring to fig. 1, the first direction is a direction a in the drawing; the second direction may be a length direction of the housing 101, as shown in fig. 1, and the second direction is a B direction in the drawing.
The application provides an on-load tap changer is connected through setting up the vacuum switch group 104 of each looks and the tap changer group 105 one-to-one position correspondence of corresponding looks, has avoided the phenomenon that the wiring produces alternately between vacuum switch group 104 and the tap changer group 105, and the wiring is more reasonable, has promoted the dielectric strength of switch.
In an alternative scheme of this embodiment, the voltage regulation switch group 105 includes a plurality of voltage regulation switches 106 electrically connected; the voltage regulating switch 106 comprises a moving contact 107 and a plurality of fixed contacts, the plurality of fixed contacts comprise a first fixed contact 108 and a second fixed contact 109 which are arranged at intervals, the moving contact 107 can move between the first fixed contact 108 and the second fixed contact 109, the moving contact 107 and the first fixed contact 108 are normally open contacts, and the moving contact 107 and the second fixed contact 109 are normally closed contacts; the movable contact 107 of one voltage regulating switch 106 in the voltage regulating switch group 105 is connected with the vacuum switch group 104.
In this embodiment, the voltage regulating switch group 105 includes a plurality of voltage regulating switches 106 electrically connected, the voltage regulating switches 106 are respectively connected with each tap of the coil, and the movable contact 107 can move between the first stationary contact 108 and the second stationary contact 109 to realize abutting against the first stationary contact 108 or the second stationary contact 109, that is, to realize connection with different coil taps, so as to realize switching between different coil turns.
Because the on-load tap changer needs to be provided with a load for voltage regulation, when the loop of the tap changer 106 is switched in turns, a vacuum switch needs to be connected into the tap changer loop to realize an arc extinguishing function, and a moving contact 107 of one tap changer 106 in the tap changer group 105 is connected with the vacuum switch group 104.
In an alternative scheme of this embodiment, the voltage regulating switch 106 directly connected to the vacuum switch set 104 is a first voltage regulating switch 110, and the movable contact 107 of the first voltage regulating switch 110 is electrically connected to the vacuum switch set 104 through a flexible connecting member 111. In addition, it should be noted that the meaning of directly connecting the first voltage regulating switch 110 with the vacuum switch group 104 here can be understood as follows: the first pressure regulating switch 110 is directly connected to the vacuum switch set 104 without being connected to the vacuum switch set 104 via another pressure regulating switch, but may be electrically connected to the vacuum switch set 104 through a flexible connector 111.
In this embodiment, since the movable contact 107 needs to move between the fixed contacts and the vacuum switch set 104 is stationary, the movable contact 107 is electrically connected to the vacuum switch set 104 through the soft connecting member 111, and the soft connecting member 111 can effectively reduce contact points and reduce direct resistance, and specifically, the soft connecting member 111 can be welded to the contact points, thereby reducing the number of fastening points and improving the production efficiency.
In an optional scheme of this embodiment, a moving contact 107 of any voltage regulating switch 106 in the voltage regulating switch group 105 except the first voltage regulating switch 110 is electrically connected to a stationary contact of the voltage regulating switch 106 connected correspondingly through a soft connecting piece 111.
In this embodiment, the moving contact 107 needs to move between the fixed contacts, and the fixed contacts are stationary, so the moving contact 107 is electrically connected to the fixed contacts through the soft connecting member 111, and the soft connecting member 111 can effectively reduce contact points and direct resistance, and specifically, the soft connecting member 111 can be arranged to be connected to the contacts by welding, so that the number of fastening points is reduced, and the production efficiency is improved.
In an optional scheme of this embodiment, a stationary terminal 112 is disposed on the stationary contact, and a moving terminal 113 is disposed on the moving contact 107, where the moving terminal 113 can abut against the stationary terminal 112.
In this embodiment, a stationary terminal conductive terminal 112 is disposed on the stationary contact, a moving terminal conductive terminal 113 is disposed on the moving contact 107, and the stationary contact and the moving contact 107 are connected in a single-point contact manner, i.e., a single-contact structure is adopted, so that the distance between the voltage regulating switches 106 can be significantly reduced, when the voltage regulating gear is increased, the overall size variation of the switches is small, and the overall structure of the switches is more compact. The on-load tap changer adopts a single-contact structure, so that the size of the switch is effectively reduced, and the cost of the switch is reduced.
In an optional scheme of this embodiment, the movable contact 107 includes an insulating member 114 and a supporting member 115, and the supporting member 115 supports and connects the movable terminal conductive terminal 113; the supporting component 115 comprises a first limiting component 116, a second limiting component 117 and a connecting plug-in component 118; the second limiting member 117 is fixedly connected to the insulating member 114; the first limiting member 116 has a first limiting groove 119 with an opening facing the insulating member 114 and matching with the movable terminal conductive terminal 113; the second limiting member 117 is provided with a second limiting groove 120 with an opening facing away from the insulating member 114 and matched with the movable terminal conductive terminal 113; the connecting plug 118 is respectively inserted into the first limiting member 116 and the second limiting member 117, so that the moving-end conductive terminal 113 is sequentially clamped in the first limiting groove 119 and the second limiting groove 120.
In this embodiment, the connecting plug 118 is respectively inserted into the first limiting member 116 and the second limiting member 117, so that the moving-end conductive terminal 113 is clamped in the region surrounded by the first limiting groove 119 and the second limiting groove 120. The first limiting part 116 and the second limiting part 117 are inserted and connected through the connecting plug 118, so that the first limiting part 116 and the second limiting part 117 are fixed on the insulating part 114, and further the moving end conductive terminal 113 is limited to move in a direction perpendicular to the moving direction of the movable contact 107, so that the moving end conductive terminal 113 can only move along one dimension direction all the time, no deflection or rotation occurs, the contact pressure is stable, the reliability is high, and the stability of the contact resistance of the contact and the reliability of the conduction are improved. Optionally, the first limiting member 116 and the second limiting member 117 are each provided with a slot corresponding to the connection plug 118, so that the connection plug 118 is plugged into the slot.
In an optional scheme of this embodiment, the movable terminal conductive terminal 113 includes a first conductive contact 121, an elastic member 122, and a second conductive contact 123 that are connected in sequence; the movable contact 107 moves between the first stationary contact 108 and the second stationary contact 109, so that the first conductive contact 121 abuts against the stationary end conductive terminal 112 of the first stationary contact 108 and can compress the elastic member 122, or the second conductive contact 123 abuts against the stationary end conductive terminal 112 of the second stationary contact 109 and can compress the elastic member 122.
In this embodiment, by providing the elastic element 122, the switching pressure of the moving contact 107 during the reciprocating movement between the first fixed contact 108 and the second fixed contact 109 can be kept unchanged, and meanwhile, the contact pressure can be effectively ensured, so that the stability of the contact resistance of the contact and the reliability of the electric conduction are improved.
In an alternative solution of this embodiment, the movable terminal conductive terminal 113 further includes two terminal blocks 126, the two terminal blocks 126 are respectively connected to the first conductive contact 121 and the second conductive contact 123, the elastic element 122 is located between the two terminal blocks 126, and the terminal blocks 126 are used for fixing the flexible connecting element 111.
Example two
The on-load tap changer in the second embodiment is an improvement on the basis of the second embodiment, technical contents disclosed in the second embodiment are not described repeatedly, and the contents disclosed in the second embodiment also belong to the contents disclosed in the second embodiment. That is, the reference numerals of the components in embodiment two may be referred to those of the components in embodiment one.
Referring to fig. 4, in an alternative embodiment, the present embodiment further includes a first operating mechanism 124 and a plurality of second operating mechanisms 125; the first operating mechanism 124 is connected to the plurality of vacuum switch sets 104, and is configured to drive corresponding vacuum switches in the plurality of vacuum switch sets 104 to be simultaneously disconnected or connected; the plurality of operating mechanisms are connected with the corresponding voltage regulating switches 106 in the plurality of voltage regulating switch groups 105, and are used for driving the corresponding voltage regulating switches 106 in the plurality of voltage regulating switch groups 105 to be simultaneously disconnected or simultaneously connected.
In this embodiment, the on-load tap changer needs to be controlled simultaneously for the corresponding vacuum switch and tap changer 106 in each phase circuit, and the operating mechanism is used to operate the corresponding switches to achieve simultaneous opening or closing. Alternatively, the actuator can be driven by an electric mechanism or by electromagnetic force.
In an alternative scheme of this embodiment, the on-load tap changer further includes a mounting plate disposed in the housing 101, the vacuum switch assembly 102 and the tap changer assembly 103 are disposed on one side of the mounting plate, and the first operating mechanism 124 and the plurality of second operating mechanisms 125 are disposed on the other side of the mounting plate; the mounting plate is provided with a plurality of first communication holes to connect the first operating mechanism 124 with the plurality of vacuum switch sets 104, and the mounting plate is provided with a plurality of second communication holes to connect the plurality of operating mechanisms with the corresponding pressure regulating switches 106 in the plurality of pressure regulating switch sets 105.
In an alternative scheme of this embodiment, the first operating mechanism 124 includes a first permanent magnet mechanism and a first transmission member that are connected, the first permanent magnet mechanism is a monostable permanent magnet mechanism, and the first transmission member is connected to the plurality of vacuum switch sets 104; the second operating mechanism 125 includes a second permanent magnet mechanism and a second transmission member, which are connected to each other, where the second permanent magnet mechanism is a bistable permanent magnet mechanism, and the second transmission member is connected to the corresponding voltage-regulating switches 106 in the plurality of voltage-regulating switch sets 105.
In this embodiment, the vacuum switch set 104 includes a first vacuum tube, a second vacuum tube and a linkage member moving therebetween, and two ends of the linkage member are respectively connected to the movable contact ends of the first vacuum tube and the second vacuum tube to realize disconnection and connection between the inner movable contact end and the stationary contact end. Specifically, the first transmission member is connected to the linkage member in each vacuum switch group 104. The first vacuum tube is a normally open vacuum switch tube, and the second vacuum tube is a normally closed vacuum switch tube. The linkage can realize the switching of normally open normally closed function.
The first permanent magnet mechanism is a monostable permanent magnet mechanism, the electromagnet drives the linkage piece to act after the switch is powered on, the vacuum switch tube realizes normally closed and normally open switching, after the switch is powered off, the electromagnet is restored to the original state, clamping stagnation cannot occur in the process of closing and opening the switch, and rapid reset can be realized. The second permanent magnet mechanism is a bistable permanent magnet mechanism, the permanent magnet mechanism performs reciprocating action to realize the switching between the normally open state and the normally closed state of the contact, the resistance at the contact is smaller, and the conductivity is higher.
The voltage regulating switch 106 and the vacuum switch are driven by electromagnetic force, mechanical structures such as an electric mechanism and the like are not needed, the moving contact 107 is controlled by the electromagnetic force to complete the motion on a straight line, the structure is simpler, and the operation is more convenient. And mechanical structures such as gears and tension springs are not used, so that the fault probability is lower, and the reliability is improved. The service life of the voltage regulating switch 106 is prolonged, meanwhile, electric arcs cannot be generated in the on-load voltage regulating process, the defect of Shanshan carbonization caused by the electric arcs is avoided, a user does not need to perform disassembly, inspection, maintenance and oil filtering operation regularly, and the purpose of being free of maintenance is achieved. In addition, the voltage regulating switch 106 uses fewer parts, so that the integral occupied area of the on-load voltage regulating switch is reduced.
In an optional scheme of this embodiment, the housing 101 is provided with a through hole, so that the coil wire penetrates through the through hole; and a sealing element is arranged at the penetrating hole, so that the coil wiring and the penetrating hole are in sealing connection, the sealing property of the switch is improved, and the pressure difference of 60KPa can be borne. Alternatively, the housing 101 may be made of metal or nonmetal.
EXAMPLE III
An embodiment of the present application provides a transformer, including the on-load tap changer of any of the above embodiments, so that all the beneficial technical effects of the on-load tap changer of any of the above embodiments are achieved, and details are not repeated herein.
In an alternative embodiment, the top of the on-load tap changer is connected to the transformer housing 101.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application. Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments.
Claims (10)
1. An on-load tap changer is characterized by comprising a shell, a vacuum switch assembly and a tap changer assembly, wherein the vacuum switch assembly and the tap changer assembly are arranged in the shell and are arranged side by side in a first direction of the shell;
the vacuum switch assembly comprises a plurality of vacuum switch sets distributed in the second direction of the shell, and the voltage regulating switch assembly comprises a plurality of voltage regulating switch sets distributed in the second direction of the shell;
the first direction and the second direction are vertically arranged;
the vacuum switch group is electrically connected with the voltage regulating switch group in a one-to-one correspondence manner.
2. The on-load tap changer of claim 1, wherein the tap changer group comprises a plurality of tap changers electrically connected;
the voltage regulating switch comprises a moving contact and a plurality of fixed contacts, the plurality of fixed contacts comprise a first fixed contact and a second fixed contact which are arranged at intervals, the moving contact can move between the first fixed contact and the second fixed contact, the moving contact and the first fixed contact are normally open contacts, and the moving contact and the second fixed contact are normally closed contacts;
and the moving contact of one voltage regulating switch in the voltage regulating switch group is connected with the vacuum switch group.
3. The on-load tap changer of claim 2, wherein the tap changer directly connected to the vacuum switch bank is a first tap changer, and a movable contact of the first tap changer is electrically connected to the vacuum switch bank through a flexible connection member.
4. The on-load tap changer of claim 3, wherein a moving contact of any tap changer except the first tap changer in the tap changer group is electrically connected with a stationary contact of the tap changer connected correspondingly through a flexible connector.
5. The on-load tap changer of claim 2, wherein the stationary contact is provided with a stationary terminal, and the movable contact is provided with a movable terminal, the movable terminal being capable of abutting against the stationary terminal.
6. The on-load tap changer of claim 5, wherein the movable contact comprises an insulating member and a support member, and the support member is in supporting connection with the movable terminal conductive terminal;
the supporting assembly comprises a first limiting piece, a second limiting piece and a connecting plug-in piece; the second limiting piece is fixedly connected with the insulating piece;
the first limiting piece is provided with a first limiting groove with an opening facing the insulating piece and matched with the movable end conductive terminal; the second limiting piece is provided with a second limiting groove, the opening of the second limiting piece faces away from the insulating piece and is matched with the movable end conductive terminal;
the connecting plug-in is respectively connected with the first limiting part and the second limiting part in an inserting mode, so that the movable end conductive terminals are sequentially connected in the first limiting groove and the second limiting groove in a clamping mode.
7. The on-load tap changer of claim 5, wherein the moving-end conducting terminal comprises a first conducting contact, an elastic member and a second conducting contact which are connected in sequence;
the moving contact moves between the first fixed contact and the second fixed contact, so that the first conductive contact abuts against the fixed end conductive terminal of the first fixed contact and can compress the elastic element, or the second conductive contact abuts against the fixed end conductive terminal of the second fixed contact and can compress the elastic element.
8. The on-load tap changer of claim 1, further comprising a first actuator and a plurality of second actuators;
the first operating mechanism is connected with the plurality of vacuum switch groups and is used for driving the corresponding vacuum switches in the plurality of vacuum switch groups to be simultaneously disconnected or simultaneously connected;
the plurality of operating mechanisms are connected with the corresponding voltage regulating switches in the plurality of voltage regulating switch groups and used for driving the corresponding voltage regulating switches in the plurality of voltage regulating switch groups to be simultaneously disconnected or connected.
9. The on-load tap changer of claim 8, wherein the first actuator comprises a first permanent magnet mechanism and a first transmission member connected with each other, the first permanent magnet mechanism is a monostable permanent magnet mechanism, and the first transmission member is connected with the plurality of vacuum switch sets;
the second operating mechanism comprises a second permanent magnet mechanism and a second transmission piece which are connected, the second permanent magnet mechanism is a bistable permanent magnet mechanism, and the second transmission piece is connected with the corresponding voltage regulating switches in the plurality of voltage regulating switch groups.
10. A transformer, characterized by comprising an on-load tap changer according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922032785.1U CN210668120U (en) | 2019-11-21 | 2019-11-21 | On-load tap changer and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922032785.1U CN210668120U (en) | 2019-11-21 | 2019-11-21 | On-load tap changer and transformer |
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| CN210668120U true CN210668120U (en) | 2020-06-02 |
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| CN201922032785.1U Active CN210668120U (en) | 2019-11-21 | 2019-11-21 | On-load tap changer and transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611497A (en) * | 2021-07-23 | 2021-11-05 | 深圳供电局有限公司 | 220kV transformer low-voltage side double-branch outgoing line structure and method |
-
2019
- 2019-11-21 CN CN201922032785.1U patent/CN210668120U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113611497A (en) * | 2021-07-23 | 2021-11-05 | 深圳供电局有限公司 | 220kV transformer low-voltage side double-branch outgoing line structure and method |
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