CN216528481U - Transformer tap switch flexible to install and transformer applying transformer tap switch - Google Patents

Abstract

The utility model discloses a transformer tap changer with flexible installation and a transformer using the same, and belongs to the field of transformers. The three groups of tapping mechanisms of the transformer tapping switch are divided into at least two independent switch parts, and the switch parts are in transmission connection with the switch operating mechanism by utilizing the transmission sleeve pipeline, so that the closed-loop tapping switch for synchronously controlling the movable contact components in the three groups of tapping mechanisms to slide relative to the corresponding static contact components by the switch operating mechanism to change the connection positions of the movable contact and the static contact is formed, the installation positions of the three groups of tapping mechanisms in the transformer are more flexible, the wiring positions of the tapping mechanisms can be closer to the lead wire outlet positions of coil windings corresponding to the transformer, the lead wire lengths of the coil windings are reduced, and the installation and the operation of the tapping switch are facilitated; and the space occupation of the tap switch in the transformer can be reduced, so that the structure of the transformer is more compact, and the transformer can be suitable for the existing triangular three-dimensional transformer and planar rectangular transformer.

Description

Transformer tap switch flexible to install and transformer applying transformer tap switch

The present application claims priority from chinese patent application No. 202123083236.0 entitled "transformer with flexible installation and transformer using the same" filed on 09/12/2021.

Technical Field

The present invention relates to a transformer tap changer, and more particularly, to a transformer tap changer that is flexibly installed and a transformer using the same.

Background

The tap changer of the transformer changes the number of turns of a high-voltage coil by changing the connection position of a tap, thereby regulating the output voltage of the transformer, and is one of indispensable main accessories on the transformer.

The existing transformer tap switches can be divided into bar tap switches, cage tap switches, disc tap switches, triangular transformer tap switches and the like according to different structural forms, the transformer tap switches mainly comprise an operating mechanism and a switch main body, and the operating mechanism is used for driving the switch main body to switch tap positions. The operating mechanism of the existing transformer tap changer is integrally and mechanically connected with the switch main body, so that the tap changer is required to be integrally installed and distributed on a transformer.

The following problems are faced in the actual production:

1. the installation layout of the transformer tap switch with the integral structure in the transformer is limited greatly, and the installation positions of the operating mechanism and the switch main body are difficult to realize, namely the tap switch can only be installed at a fixed position of the transformer, on one hand, the installation position of the operating mechanism cannot be flexibly selected, on the other hand, the wiring end of the tap switch cannot be installed close to the coil winding outlet position of the transformer, the lead length of the coil winding needs to be increased, and the materials of charged bodies such as the lead of the transformer and the like are difficult to further save;

2. the transformer tap switch with the integral structure occupies larger height space of the transformer oil tank, so that the structure of the transformer oil tank cannot be further compacted;

3. for a transformer with a smaller size, the size of a transformer tap changer with an integral structure, especially a strip-shaped tap changer, is often larger than that of the transformer, so that the problem of difficult installation or even impossible installation is caused.

In addition, the tap changer of the triangular three-dimensional transformer has more prominent problems. The existing triangular transformer tap switch is provided with three tap mechanisms, and the specific structure of the existing triangular transformer tap switch can be referred to as 'a strip tap switch for a triangular three-dimensional wound core transformer' disclosed by Chinese patent number ZL201611245881.9, and the existing triangular transformer tap switch comprises a base, an adjusting mechanism and three groups of tap mechanisms, wherein the first tap mechanism, the second tap mechanism and the third tap mechanism are respectively distributed on three corners of the same triangle; the first tapping mechanism comprises a first fixed contact component fixed on the base and a first moving contact component installed on the first fixed contact component, the second tapping mechanism comprises a second fixed contact component fixed on the base and a second moving contact component installed on the second fixed contact component, and the third tapping mechanism comprises a third fixed contact component fixed on the base and a third moving contact component installed on the third fixed contact component. The wiring position of the tap changer of the patent application can be close to the wiring of each coil of the triangular three-dimensional transformer, and materials of charged bodies such as lead wires of the transformer are saved. However, in the existing tap switch of the triangular three-dimensional transformer, three groups of connecting mechanisms are connected together through a base, the height size of the tap switch is large, and the space occupied by the triangular three-dimensional transformer after the tap switch is installed is large; and after the tapping switch is manufactured, the tapping switch is fixed with the position of a coil tapping line of the transformer, the limitation of the installation position of the tapping switch is large, when the size of the transformer is large, the distance from each coil tapping line to the wiring position of the three groups of tapping mechanisms is long, the length of a coil lead is increased, and the materials of charged bodies such as the transformer lead and the like are difficult to further save.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects of the existing transformer tap changer and provide a transformer tap changer with flexible installation and a transformer applying the transformer tap changer, and the technical scheme of the utility model is adopted to divide three groups of tapping mechanisms of the transformer tap changer into at least two independent switch parts, the switch part is connected with the switch operating mechanism in a transmission way by utilizing a transmission sleeve pipeline, so that a closed-loop tap switch for synchronously controlling the movable contact component in the three groups of tap mechanisms to slide relative to the corresponding fixed contact component to change the connecting positions of the movable contact and the fixed contact is formed, the mounting positions of the three groups of tap mechanisms in the transformer are more flexible, the wiring positions of the tap mechanisms can be closer to the lead wire outlet positions of coil windings corresponding to the transformer, the lead wire length of the coil windings is reduced, and the installation and the operation of the tap switch are convenient; and the space occupation of the tap switch in the transformer can be reduced, so that the structure of the transformer is more compact.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the utility model is as follows:

the transformer tap switch with flexible installation comprises a first tap mechanism, a second tap mechanism, a third tap mechanism, a switch operating mechanism and a transmission sleeve pipeline, wherein the first tap mechanism, the second tap mechanism and the third tap mechanism respectively comprise a static contact component and a moving contact component, and the moving contact component and the static contact component are in relative sliding switching fit; the first tapping mechanism, the second tapping mechanism, the third tapping mechanism and the switch operating mechanism are sequentially connected end to end through transmission casing lines in a transmission manner, so that a closed-loop tapping switch is formed, wherein the switch operating mechanism synchronously controls moving contact assemblies in the first tapping mechanism, the second tapping mechanism and the third tapping mechanism to slide relative to corresponding static contact assemblies so as to change the connection positions of moving and static contacts;

or any two of the first tapping mechanism, the second tapping mechanism and the third tapping mechanism are connected into an integral structure and are in transmission connection with the other one and the switch operating mechanism sequentially from head to tail through a transmission casing line, so that the closed-loop tapping switch capable of changing the connection position of the moving contact and the fixed contact by synchronously controlling the moving contact components in the first tapping mechanism, the second tapping mechanism and the third tapping mechanism to slide relative to the corresponding fixed contact components through the switch operating mechanism is formed.

Furthermore, the transmission sleeve line include flexible sinle silk and the flexible sleeve pipe of cover in the flexible sinle silk outside, the both ends of flexible sleeve pipe be connected with the immobile piece in foretell closed loop tapping switch respectively, the both ends of flexible sinle silk stretch out respectively and be connected with the moving part in foretell closed loop tapping switch behind the tip of corresponding flexible sleeve pipe.

Furthermore, the transmission sleeve pipeline adopts a brake pull wire.

Furthermore, the static contact component in the first, second and third tapping mechanisms is provided with a mounting seat, and two ends of the static contact component are also provided with a static contact bracket connecting piece used for being connected with a flexible sleeve of a transmission sleeve pipeline; and two ends of the moving contact component in the first tapping mechanism, the second tapping mechanism and the third tapping mechanism are also provided with a moving contact support connecting piece used for being connected with a flexible wire core of a transmission sleeve pipeline.

Furthermore, the first tapping mechanism, the second tapping mechanism and the third tapping mechanism are three independent single-phase tapping switch structures.

Furthermore, the first tapping mechanism and the second tapping mechanism are connected into a whole to form a duplex tapping switch structure, and the third tapping mechanism is an independent single-phase tapping switch structure.

Further, the switch operating mechanism is a rotary operating mechanism or a sliding operating mechanism.

Furthermore, when the switch operating mechanism is a rotary operating mechanism, the switch operating mechanism comprises a switch base body and a winding wheel which is arranged in the switch base body in a relative rotation mode and is provided with a knob, the winding wheel and the end parts of the flexible wire cores in the two transmission sleeve pipelines are respectively wound and connected in opposite directions, and the corresponding ends of the flexible sleeves in the two transmission sleeve pipelines are respectively and fixedly arranged on the switch base body; when the switch operating mechanism is a sliding operating mechanism, the switch operating mechanism comprises a switch base body and a sliding body which is arranged in the switch base body in a relatively sliding mode, two ends of the sliding body are respectively connected with the end portions of the flexible wire cores in the transmission sleeve pipelines on the corresponding sides, and the end portions of the flexible sleeves in the corresponding transmission sleeve pipelines are fixedly arranged on the switch base body.

The utility model discloses a transformer, which comprises an iron core, a coil winding, a clamping piece and an oil tank, wherein the coil winding is wound on an iron core column of the iron core, the coil winding and the clamping piece are all positioned in the oil tank, the transformer tapping switch with flexible installation is further provided, a first tapping mechanism, a second tapping mechanism and a third tapping mechanism are respectively arranged at tapping line leading-out positions of the corresponding coil winding and are installed on the clamping piece, and a switch operating mechanism is installed on an oil tank cover or an oil tank wall of the oil tank.

Furthermore, the transformer is a triangular three-dimensional transformer, any two of the first tapping mechanism, the second tapping mechanism and the third tapping mechanism are positioned on the same triangular edge of the triangular three-dimensional transformer, and the other one of the first tapping mechanism, the second tapping mechanism and the third tapping mechanism is positioned on the other adjacent triangular edge of the triangular three-dimensional transformer.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) the utility model relates to a transformer tapping switch with flexible installation, which comprises a first tapping mechanism, a second tapping mechanism, a third tapping mechanism, a switch operating mechanism and a transmission sleeve pipeline, wherein three tapping mechanisms are divided into at least two independent switch parts, and the switch parts are in transmission connection with the switch operating mechanism by using the transmission sleeve pipeline to form a closed-loop tapping switch which synchronously controls a movable contact component in the three tapping mechanisms to slide relative to a corresponding static contact component so as to change the connection positions of a movable contact and a fixed contact; the space occupation of the tap switch in the transformer can be reduced, so that the structure of the transformer is more compact, and the transformer can be suitable for the existing triangular three-dimensional transformer and planar rectangular transformer;

(2) according to the transformer tap switch with flexible installation, the transmission sleeve pipeline comprises the flexible wire core and the flexible sleeve sleeved outside the flexible wire core, two ends of the flexible sleeve are respectively connected with the fixed part in the closed-loop tap switch, two ends of the flexible wire core respectively extend out of the end parts of the corresponding flexible sleeves and then are connected with the movable part in the closed-loop tap switch, linkage control among the tap mechanisms is achieved by using the transmission sleeve pipeline, the transmission structure is simple, the transmission synchronism is good, the position setting of the switch operating mechanism is facilitated, and the installation position selectivity of the switch operating mechanism is more;

(3) according to the transformer tap switch with flexible installation, the transmission sleeve pipeline adopts the brake pull wire which can adopt the existing products on the market, and the transformer tap switch is convenient to obtain and low in cost;

(4) according to the transformer tapping switch with flexible installation, the mounting seat is arranged on the static contact component in the three groups of tapping mechanisms, so that the installation and fixation of each group of tapping mechanisms are facilitated; the two ends of the static contact component are also provided with static contact support connecting pieces used for being connected with the flexible sleeve of the transmission sleeve pipeline, and the two ends of the moving contact component are also provided with moving contact support connecting pieces used for being connected with the flexible wire core of the transmission sleeve pipeline, so that the connection of the tapping mechanism and the transmission sleeve pipeline is facilitated;

(5) according to the transformer tap switch with flexible installation, the first tap mechanism, the second tap mechanism and the third tap mechanism are three independent single-phase tap switch structures, so that the standardized design of each tap mechanism is facilitated, the installation position can be flexibly determined according to transformers of different sizes, and the installation is more flexible and convenient;

(6) according to the transformer tap switch with flexible installation, the first tap mechanism and the second tap mechanism are connected into a whole to form a duplex tap switch structure, and the third tap mechanism is an independent single-phase tap switch structure, so that the intermediate transmission links of a transmission sleeve pipeline can be reduced, the transmission control of each tap mechanism is more stable, the two groups of tap mechanisms can be conveniently installed in the same direction, and the tap mechanisms can be better adapted to the outlet positions of three-phase coil windings in a transformer;

(7) according to the transformer tap switch with flexible installation, the switch operating mechanism is a rotary operating mechanism or a sliding operating mechanism, different switch forms can be flexibly selected according to needs, and the output voltage of the transformer is further convenient to adjust and operate;

(8) the utility model relates to a transformer, which comprises an iron core, a coil winding, clamping pieces and an oil tank, wherein the coil winding is wound on an iron core column of the iron core, and the iron core, the coil winding and the clamping pieces are all positioned in the oil tank;

(9) the transformer is a triangular three-dimensional transformer, any two of the first tapping mechanism, the second tapping mechanism and the third tapping mechanism are positioned on the same triangular edge of the triangular three-dimensional transformer, and the other one of the first tapping mechanism, the second tapping mechanism and the third tapping mechanism is positioned on the other adjacent triangular edge of the triangular three-dimensional transformer, so that the wiring ends of the three tapping mechanisms can be closer to three groups of coil windings of the triangular three-dimensional transformer, the problem that the mounting layout of a tapping switch of the triangular three-dimensional transformer is limited is solved, coil leads are saved, and the structure of the triangular three-dimensional transformer is more compact.

Drawings

Fig. 1 is a schematic structural diagram of a flexibly mounted transformer tap changer according to embodiment 1 of the present invention;

fig. 2 is a schematic view of an flexibly mounted transformer tap changer in a triangular three-dimensional transformer according to embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of a flexibly mounted transformer tap changer according to embodiment 3 of the present invention;

fig. 4 is a schematic view of a flexibly mounted transformer tap changer in a triangular three-dimensional transformer according to embodiment 3 of the present invention;

fig. 5 is a schematic structural view of a duplex tap changer structure according to the present invention;

fig. 6 is a schematic structural diagram of a single-phase tap changer structure according to the present invention;

fig. 7 is a schematic diagram of an installation of a flexibly installed transformer tap changer in a planar rectangular transformer according to embodiment 5 of the present invention.

The reference numerals in the schematic drawings illustrate:

1. a first tapping mechanism; 1-1, a first stationary contact assembly; 1-1a, a first static contact bracket; 1-1b, a first static contact; 1-2, a first movable contact component; 1-2a, a first moving contact support; 1-2b, a first moving contact; 2. a second tapping mechanism; 2-1, a second fixed contact assembly; 2-1a, a second static contact bracket; 2-1b, a second static contact; 2-2, a second moving contact assembly; 2-2a, a second moving contact support; 2-2b and a second moving contact; 3. a third tapping mechanism; 3-1, a third fixed contact assembly; 3-1a, a third static contact bracket; 3-1b and a third static contact; 3-2, a third movable contact component; 3-2a, a third moving contact support; 3-2b and a third moving contact; 4. a switch operating mechanism; 5. a drive sleeve line; 6. a mounting seat; 7. a static contact bracket connecting piece; 8. a moving contact support connecting piece; 9. an iron core; 10. a coil winding; 11. a clamp; 12. and an oil tank.

Detailed Description

For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ example 1]

Referring to fig. 1, the transformer tap switch with flexible installation of this embodiment includes a first tap mechanism 1, a second tap mechanism 2, a third tap mechanism 3, a switch operating mechanism 4, and a transmission sleeve pipeline 5, where the first tap mechanism 1, the second tap mechanism 2, and the third tap mechanism 3 include a fixed contact component and a movable contact component, and the movable contact component and the fixed contact component are in relative sliding switching fit; specifically, the first tapping mechanism 1 comprises a first fixed contact component 1-1 and a first movable contact component 1-2 in relative sliding fit with the first fixed contact component 1-1, the second tapping mechanism 2 comprises a second fixed contact component 2-1 and a second movable contact component 2-2 in relative sliding fit with the second fixed contact component 2-1, and the third tapping mechanism 3 comprises a third fixed contact component 3-1 and a third movable contact component 3-2 in relative sliding fit with the third fixed contact component 3-1; the first tapping mechanism 1, the second tapping mechanism 2, the third tapping mechanism 3 and the switch operating mechanism 4 are sequentially connected end to end through a transmission sleeve pipeline 5 in a transmission mode, and a closed-loop tapping switch capable of changing the connection positions of the moving contacts and the fixed contacts by synchronously controlling the moving contact assemblies in the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 to slide relative to the corresponding fixed contact assemblies through the switch operating mechanism 4 is formed. Thus, when the switch operating mechanism 4 is operated, the transmission sleeve pipe 5 can synchronously drive the first movable contact assembly 1-2 to move relative to the first fixed contact assembly 1-1, the second movable contact assembly 2-2 to move relative to the second fixed contact assembly 2-1 and the third movable contact assembly 3-2 to move relative to the third fixed contact assembly 3-1, so that gear switching of each tapping mechanism is realized.

In this embodiment, the transmission sleeve line 5 includes a flexible line core and a flexible sleeve sleeved outside the flexible line core, two ends of the flexible sleeve are respectively connected to the fixed parts of the closed-loop tap-changer, and two ends of the flexible line core respectively extend out of the end parts of the corresponding flexible sleeve and then are connected to the movable parts of the closed-loop tap-changer. The transmission sleeve pipeline 5 can be bent, so that the relative positions of the first tapping mechanism 1, the second tapping mechanism 2, the third tapping mechanism 3 and the switch operating mechanism 4 can be flexibly set, and the bending of the transmission sleeve pipeline 5 cannot influence the drive control of the flexible wire core on each moving contact assembly. The transmission sleeve pipeline 5 is utilized to realize linkage control among all the tapping mechanisms, the transmission structure is simple, the transmission synchronism is good, and the position setting of the switch operating mechanism is facilitated, so that the installation position selectivity of the switch operating mechanism is more. Furthermore, the transmission sleeve pipeline 5 adopts a brake stay wire which is a product existing in the market, and is convenient to obtain and low in cost.

Referring to fig. 5 and 6, in the present embodiment, the first fixed contact assembly 1-1 is composed of a first fixed contact bracket 1-1a and a first fixed contact 1-1b, where the first fixed contact 1-1b is disposed at an equal distance along the length direction of the first fixed contact bracket 1-1 a; the first moving contact assembly 1-2 is composed of a first moving contact support 1-2a and a first moving contact 1-2b, and the first moving contact 1-2b is slidably mounted on the first fixed contact support 1-1a and fixed on the first moving contact support 1-2 a. The second fixed contact assembly 2-1 consists of a second fixed contact bracket 2-1a and a second fixed contact 2-1b, and the second fixed contacts 2-1b are arranged at equal intervals along the length direction of the second fixed contact bracket 2-1 a; the second moving contact component 2-2 is composed of a second moving contact support 2-2a and a second moving contact 2-2b, and the second moving contact 2-2b is slidably mounted on the second fixed contact support 2-1a and fixed on the second moving contact support 2-2 a. The third static contact assembly 3-1 consists of a third static contact bracket 3-1a and a third static contact 3-1b, and the third static contact 3-1b is arranged at equal intervals along the length direction of the third static contact bracket 3-1 a; the third moving contact component 3-2 is composed of a third moving contact support 3-2a and a third moving contact 3-2b, and the third moving contact 3-2b is slidably mounted on the third fixed contact support 3-1a and fixed on the third moving contact support 3-2 a. It should be noted that the static contact supports and the moving contacts in the first tapping mechanism 1, the second tapping mechanism 2, and the third tapping mechanism 3 may be in linear sliding fit, that is, the static contact supports are in a linear structure, or in arc sliding fit, that is, the static contact supports are in an arc structure with a certain curvature, the arc static contact supports are allowed to be adopted, and only the moving contacts need to be ensured to be capable of stably sliding on the arc static contact supports to switch different gears.

In this embodiment, the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 are three independent single-phase tapping switch structures, that is, the tapping mechanisms shown in fig. 6, so that only one tapping mechanism needs to be designed during actual manufacturing, and three groups of independent single-phase tapping switch structures can form the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3, thereby facilitating the standardized design of each tapping mechanism, flexibly determining the installation position according to transformers of different sizes, and being more flexible and convenient to install.

Referring to fig. 5 and 6, in order to facilitate the installation of each tapping mechanism, the fixed contact assemblies in the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 are provided with installation seats 6, so as to facilitate the installation and fixation of each group of tapping mechanisms. Two ends of the static contact component are also provided with static contact bracket connecting pieces 7 which are used for being connected with the flexible sleeve of the transmission sleeve pipeline 5; two ends of a moving contact component in the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 are also provided with a moving contact support connecting piece 8 which is used for being connected with a flexible wire core of a transmission sleeve pipeline 5; the static contact support connecting piece 7 and the moving contact support connecting piece 8 can be conveniently connected with the transmission sleeve pipeline 5.

In the present embodiment, the switch operating mechanism 4 is a rotary operating mechanism. Specifically, when the switch operating mechanism 4 is a rotary operating mechanism, the switch operating mechanism 4 includes a switch base body and a winding wheel with a knob, which is relatively rotatably installed in the switch base body, the winding wheel and the end portions of the flexible wire cores in the two transmission sleeve pipelines 5 are respectively connected in a winding manner in opposite directions, and the corresponding ends of the flexible sleeves in the two transmission sleeve pipelines 5 are respectively and fixedly installed on the switch base body. Be equipped with corresponding gear sign and gear positioning mechanism on the knob, rotate through the rotatory reel that drives of knob, the reel rotates and drives the flexible sinle silk of a transmission sleeve pipeline 5 and receive the line, and the flexible sinle silk unwrapping wire of a transmission sleeve pipeline 5, and then drives each tapping mechanism's moving contact removal, has made things convenient for the output voltage regulation operation of transformer.

Referring to fig. 2, the present embodiment further discloses a transformer, which includes an iron core 9, a coil winding 10, a clamping piece 11 and an oil tank 12, wherein the coil winding 10 is wound on an iron core column of the iron core 9, and the iron core 9, the coil winding 10 and the clamping piece 11 are all located in the oil tank 12. The transformer also comprises the transformer tapping switch with flexible installation, the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 are respectively arranged at tapping line leading-out positions of the corresponding coil windings 10 and are arranged on the clamping piece 11, and the switch operating mechanism 4 is arranged on an oil tank cover or an oil tank wall of the oil tank 12, so that coil leading wires of the triangular three-dimensional transformer are saved, the remote control of each group of tapping mechanisms is facilitated, and the structure of the transformer is more compact.

Further, the transformer of the present embodiment is a triangular three-dimensional transformer. As shown in fig. 2, the iron core 9 of the triangular three-dimensional transformer has three iron core columns distributed in a triangular shape, the coil winding 10 is wound on the corresponding iron core column of the iron core 9, the upper and lower yokes of the iron core 9 are provided with clamping pieces 11, and the first shunting mechanism 1, the second shunting mechanism 2 and the third shunting mechanism 3 are respectively located on three sides of the triangular shape of the triangular three-dimensional transformer, so that the three-phase coil winding can be better matched with the outgoing line position of the three-phase coil winding in the transformer. The clamping piece 11 comprises an upper clamping piece and a lower clamping piece, the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 are fixedly arranged on the upper clamping piece or the lower clamping piece, and specifically, the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 are all fixed on the upper clamping piece or the lower clamping piece through the mounting seats 6 on the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3, so that the mounting and the fixing of each tapping mechanism are facilitated.

Other structures of the transformer of the present embodiment are the same as those of the prior art, and are not described herein again.

[ example 2]

The basic structure and the working principle of the transformer tap changer with flexible installation and the transformer using the same in the embodiment are the same as those of the embodiment 1, and the difference is that:

in the present embodiment, the switch operating mechanism 4 is a slide-type operating mechanism. Specifically, when the switch operating mechanism 4 is a sliding operating mechanism, the switch operating mechanism 4 includes a switch base body and a sliding body relatively slidably disposed in the switch base body, two ends of the sliding body are respectively connected with the end portions of the flexible wire cores in the transmission casing lines 5 on the corresponding sides, and the end portions of the flexible casings in the corresponding transmission casing lines 5 are fixedly mounted on the switch base body. Be equipped with push-and-pull portion on the slider, also have gear sign and gear positioning mechanism on the switch base member, drive the flexible sinle silk in the transmission cover pipeline 5 of one side through the push-and-pull slider and receive the line, the flexible sinle silk unwrapping wire in the transmission cover pipeline 5 of opposite side, and then drive the moving contact removal of each tapping mechanism, made things convenient for the output voltage regulation operation of transformer.

[ example 3]

As shown in fig. 3 and 4, the basic structure and the operation principle of the transformer tap changer and the transformer using the same of this embodiment are the same as those of embodiment 1, except that:

in this embodiment, any two of the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 are connected into an integral structure, and are in transmission connection with the other one and the switch operating mechanism 4 sequentially through the transmission sleeve pipe 5, so as to form a closed-loop tapping switch which changes the connection position of the moving contact and the fixed contact by synchronously controlling the moving contact assemblies in the first tapping mechanism 1, the second tapping mechanism 2 and the third tapping mechanism 3 to slide relative to the corresponding fixed contact assemblies through the switch operating mechanism 4.

Specifically, as shown in fig. 3, 5, and 6, the first tapping mechanism 1 and the second tapping mechanism 2 are connected into a whole to form a duplex tapping switch structure, and the third tapping mechanism 3 is an independent single-phase tapping switch structure. As shown in fig. 5, the first tapping mechanism 1 and the second tapping mechanism 2 share the same fixed contact support and the same movable contact support, that is, the first fixed contact support 1-1a and the second fixed contact support 2-1a are connected into a whole to form an integrated fixed contact support, and the first movable contact support 1-2a and the second movable contact support 2-2a are connected into a whole to form an integrated movable contact support. The third tapping mechanism 3 is specifically configured as shown in fig. 6. Therefore, the middle transmission link of the transmission sleeve pipeline 5 can be reduced, the transmission control of each tapping mechanism is more stable, the two groups of tapping mechanisms can be conveniently installed in the same direction, and the tapping positions of the three-phase coil windings in the transformer can be better matched.

In the transformer tap switch with flexible installation of the embodiment, an installation structure of the transformer tap switch in a triangular three-dimensional transformer is shown in fig. 4, any two of a first tap mechanism 1, a second tap mechanism 2 and a third tap mechanism 3 are located on the same triangular edge of the triangular three-dimensional transformer, and the other one is located on the other adjacent triangular edge of the triangular three-dimensional transformer, that is, a duplex tap switch structure formed by the first tap mechanism 1 and the second tap mechanism 2 is located on the same triangular edge of the triangular three-dimensional transformer, and the third tap mechanism 3 is located on the other adjacent triangular edge of the triangular three-dimensional transformer, so that the wiring position of each tap mechanism corresponds to the position of each phase coil lead of the triangular three-dimensional transformer, the coil leads are shorter, and the wiring is convenient.

[ example 4]

The basic structure and the working principle of the transformer tap changer with flexible installation and the transformer using the same in the embodiment are the same as those of the embodiment 3, and the difference is that:

in the present embodiment, the switch operating mechanism 4 is a slide-type operating mechanism. Specifically, when the switch operating mechanism 4 is a sliding operating mechanism, the switch operating mechanism 4 includes a switch base body and a sliding body relatively slidably disposed in the switch base body, two ends of the sliding body are respectively connected with the end portions of the flexible wire cores in the transmission casing lines 5 on the corresponding sides, and the end portions of the flexible casings in the corresponding transmission casing lines 5 are fixedly mounted on the switch base body. Be equipped with push-and-pull portion on the slider, also have gear sign and gear positioning mechanism on the switch base member, drive the flexible sinle silk in the transmission cover pipeline 5 of one side through the push-and-pull slider and receive the line, the flexible sinle silk unwrapping wire in the transmission cover pipeline 5 of opposite side, and then drive the moving contact removal of each tapping mechanism, made things convenient for the output voltage regulation operation of transformer.

[ example 5]

As shown in fig. 7, the basic structure and the operation principle of the flexibly mounted transformer tap changer and the transformer using the same in this embodiment are the same as those in embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4, except that:

the transformer tap changer with flexible installation of the embodiment is applied to a planar rectangular transformer. As shown in fig. 7, in the planar rectangular transformer, the iron core 9 has three sets of iron core columns arranged side by side, a coil winding 10 is wound on each iron core column, a clamping piece 11 is arranged on the iron core 9 and the coil winding 10, and the iron core 9, the coil winding 10 and the clamping piece 11 are all arranged in a rectangular oil tank 12. In the flexibly-installed transformer tap changer of the present embodiment, the first tap mechanism 1, the second tap mechanism 2, and the third tap mechanism 3 can be installed according to the outgoing line positions of the three sets of coil windings 10, and can be respectively installed on the clip 11 corresponding to the outgoing line side of the coil windings 10, and the switch operating mechanism 4 can be installed on the oil tank wall or the oil tank cover of the oil tank 12.

Therefore, the transformer tap changer with flexible installation can be used in a triangular three-dimensional transformer and a planar rectangular transformer, solves the problem of the process of connecting wires between a transformer coil and the tap changer, enables the installation position of the tap changer to be more flexible, and enables the coil outlet position of the transformer to be flexibly arranged. Furthermore, due to the independent design of the three groups of tapping mechanisms, the sizes of all parts of the tapping switch are further reduced, and the tapping switch is suitable for transformers with smaller sizes.

In addition to the above embodiments, alternatively, the switch operating mechanism 4 may be electrically controlled, and when the switch operating mechanism 4 is a rotary operating mechanism, the winding wheel may be driven to rotate by a rotary motor to adjust the gear of the transformer; when the switch operating mechanism 4 is a sliding operating mechanism, the linear driving mechanism can be used to control the sliding body to move to adjust the gear of the transformer, and the linear driving mechanism can be an existing electric push rod, a motor-driven lead screw nut mechanism or a motor-driven gear rack mechanism.

According to the transformer tap switch with flexible installation and the transformer applying the transformer tap switch, three groups of tap mechanisms of the transformer tap switch are divided into at least two independent switch parts, and the switch parts are in transmission connection with the switch operating mechanism by utilizing the transmission sleeve pipeline, so that a closed-loop tap switch which changes the connection positions of a moving contact and a fixed contact by synchronously controlling the moving contact component in the three groups of tap mechanisms to slide relative to the corresponding fixed contact component through the switch operating mechanism is formed, the installation positions of the three groups of tap mechanisms in the transformer are more flexible, the wiring positions of the tap mechanisms can be closer to the lead outlet positions of coil windings corresponding to the transformer, the lead lengths of the coil windings are reduced, and the installation and the operation of the tap switch are convenient; and the space occupation of the tap switch in the transformer can be reduced, so that the structure of the transformer is more compact, and the transformer can be suitable for the existing triangular three-dimensional transformer and planar rectangular transformer.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims (10)

1. The utility model provides a transformer tapping switch of nimble installation which characterized in that: the switch comprises a first tapping mechanism (1), a second tapping mechanism (2), a third tapping mechanism (3), a switch operating mechanism (4) and a transmission sleeve pipeline (5), wherein the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) respectively comprise a fixed contact component and a movable contact component, and the movable contact component and the fixed contact component are in relative sliding switching fit; the first tapping mechanism (1), the second tapping mechanism (2), the third tapping mechanism (3) and the switch operating mechanism (4) are sequentially connected end to end through a transmission sleeve pipeline (5) in a transmission manner, so that a closed-loop tapping switch which synchronously controls movable contact assemblies in the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) to slide relative to corresponding static contact assemblies through the switch operating mechanism (4) so as to change the connection positions of the movable and static contacts is formed;

or any two of the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) are connected into an integral structure and are in transmission connection with the other one and the switch operating mechanism (4) sequentially through the transmission sleeve pipeline (5) end to end, so that the closed-loop tapping switch capable of synchronously controlling the movable contact assemblies in the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) to slide relative to the corresponding static contact assemblies through the switch operating mechanism (4) to change the connection positions of the movable and static contacts is formed.

2. A flexibly mounted transformer tap changer according to claim 1, wherein: the transmission sleeve pipeline (5) comprises a flexible cable core and a flexible sleeve pipe sleeved outside the flexible cable core, the two ends of the flexible sleeve pipe are respectively connected with the fixed part in the closed-loop tap-changer, and the two ends of the flexible cable core respectively extend out of the end parts of the corresponding flexible sleeve pipe and then are connected with the moving part in the closed-loop tap-changer.

3. A flexibly mounted transformer tap changer according to claim 2, wherein: the transmission sleeve pipeline (5) adopts a brake pull wire.

4. A flexibly mounted transformer tap changer according to claim 2, wherein: the static contact assemblies in the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) are provided with mounting seats (6), and two ends of each static contact assembly are also provided with static contact support connecting pieces (7) used for being connected with flexible sleeves of transmission sleeve pipelines (5); and two ends of a moving contact component in the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) are also provided with a moving contact support connecting piece (8) which is used for being connected with a flexible wire core of a transmission sleeve pipeline (5).

5. A flexibly mounted transformer tap changer according to any one of claims 1 to 4, characterized in that: the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) are three independent single-phase tapping switch structures.

6. A flexibly mounted transformer tap changer according to any one of claims 1 to 4, characterized in that: the first tapping mechanism (1) and the second tapping mechanism (2) are connected into a whole to form a duplex tapping switch structure, and the third tapping mechanism (3) is an independent single-phase tapping switch structure.

7. A flexibly mounted transformer tap changer according to any one of claims 1 to 4, characterized in that: the switch operating mechanism (4) is a rotary operating mechanism or a sliding operating mechanism.

8. The flexibly mounted transformer tap changer of claim 7, wherein: when the switch operating mechanism (4) is a rotary operating mechanism, the switch operating mechanism (4) comprises a switch base body and a winding wheel which is arranged in the switch base body in a relative rotation mode and is provided with a knob, the winding wheel is respectively connected with the end parts of the flexible wire cores in the two transmission sleeve pipelines (5) in a winding mode in the opposite direction, and the corresponding ends of the flexible sleeves in the two transmission sleeve pipelines (5) are respectively and fixedly arranged on the switch base body; when the switch operating mechanism (4) is a sliding operating mechanism, the switch operating mechanism (4) comprises a switch base body and a sliding body which is arranged in the switch base body in a relatively sliding mode, two ends of the sliding body are respectively connected with the end portions of the flexible wire cores in the transmission sleeve pipelines (5) on the corresponding sides, and the end portions of the flexible sleeves in the corresponding transmission sleeve pipelines (5) are fixedly arranged on the switch base body.

9. The utility model provides a transformer, includes iron core (9), coil winding (10), folder (11) and oil tank (12), coil winding (10) around locating on the iron core post of iron core (9), coil winding (10) and folder (11) all be located oil tank (12), its characterized in that: the flexibly mounted transformer tap changer of any one of claims 1 to 8, further comprising a first tap mechanism (1), a second tap mechanism (2) and a third tap mechanism (3) respectively disposed at the tap line leading-out of the corresponding coil winding (10) and mounted on the clip (11), wherein the switch operating mechanism (4) is mounted on a tank cover or a tank wall of the tank (12).

10. A transformer according to claim 9, characterised in that: the transformer is a triangular three-dimensional transformer, any two of the first tapping mechanism (1), the second tapping mechanism (2) and the third tapping mechanism (3) are positioned on the same triangular edge of the triangular three-dimensional transformer, and the other one is positioned on the other adjacent triangular edge of the triangular three-dimensional transformer.

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