CN201773682U - Positive and negative regulation cage type non-excitation tapping switch - Google Patents
Positive and negative regulation cage type non-excitation tapping switch Download PDFInfo
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- CN201773682U CN201773682U CN2010202686728U CN201020268672U CN201773682U CN 201773682 U CN201773682 U CN 201773682U CN 2010202686728 U CN2010202686728 U CN 2010202686728U CN 201020268672 U CN201020268672 U CN 201020268672U CN 201773682 U CN201773682 U CN 201773682U
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- 230000005284 excitation Effects 0.000 title abstract description 3
- 238000010079 rubber tapping Methods 0.000 title abstract 5
- 230000003828 downregulation Effects 0.000 title abstract 2
- 230000003827 upregulation Effects 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
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Abstract
The utility model discloses a positive and negative regulation cage type non-excitation tapping switch for a transformer, which comprises an operating mechanism, a central rotating shaft and a positioning device which are connected with the operating mechanism, a group of insulation brackets, a plurality of polarity contact layers and a plurality of selective contact layers which are fixed on the insulation brackets, polarity fixed contact groups arranged on all the polarity contact layers; selective fixed contact groups arranged on all the selective contact layers, and a plurality of moving contact components which are longitudinally fixed on the central rotating shaft at intervals. The tapping switch is characterized in that the polarity fixed contact group of each polarity contact layer comprises a positive polarity fixed contact and a negative polarity fixed contact; and both the positive polarity fixed contact and the negative polarity fixed contact span more than one tapping position. During positive polarity voltage regulation or negative polarity voltage regulation, when the moving contact of the moving contact group moves from certain fixed contact to an adjacent fixed contact, the moving contact is always connected with a positive polarity fixed contact or a negative polarity fixed contact through an arc electrical contact trick. The tapping switch has the advantages that the contacts are smooth to contact, the gear-shifting operation force is light, and the volume is small.
Description
Technical field
The utility model relates to a kind of positive and negative accent cage type off circuit tap changer.The v background technology
The cage modle off circuit tap changer is applicable to that three-phase or single-phase oil immersion type transformer change tap position under no excitation situation, to reach the purpose of adjusting line voltage distribution.Typical positive and negative accent cage type off circuit tap changer such as Fig. 1 on the market～shown in Figure 3, it comprises operating mechanism 11, positioner 12, centre rotational axis 13, by the fixing insulating support 14 of ring flange, interleaved is fixed on the polarity contact layer 15 on the insulating support 14 and selects contact layer 16, be respectively equipped with a plurality of positive polaritys at polarity contact layer 15 and decide contact 151, a plurality of negative polarity are decided contact 152, and contact 153 is decided in an output, contact 161 decide in a plurality of selections and contact 162 is decided in an output selecting to be respectively equipped with on the contact layer 16, also comprise with described each decide the moving contact component 17 that the contact selection contacts.
At polarity contact layer, a plurality of positive polaritys are decided adjacent in the contact two and are decided between the contact, adopt a polarity contact joint cover 18 to link together by screw 181 in the outside of insulating support, become the positive polarity contact component.A plurality of negative polarity decide also to adopt another polarity contact joint cover 19 to link together by the outside of screw 191 at insulating support between adjacent in the contact two, become the negative polarity contact component.
The shortcoming of this structure is:
1, it is not good to connect the screw field effect that each polarity contact joint cover uses, and is unfavorable for the insulation property of switch.Simultaneously, also increased the through-flow heating of tie-point.
2, each polarity contact joint cover is installed in beyond the space that insulating support surrounds, and has both increased the charged outer limit of switch, has taken the active position of transformer again, is unfavorable for the volume of transformer miniaturization.
3, since each polarity to decide contact be independently, therefore, when the moving contact group when a polarity is decided contact and is transferred to another adjacent polarity and decide contact, operating physical force is bigger.
Summary of the invention
The utility model is in order to overcome the shortcoming that prior art exists, and provide a kind of simple in structure, reliability is high, operating physical force is light, be more conducive to a kind of positive and negative accent cage type off circuit tap changer that is used for transformer of volume of transformer miniaturization.
The technical scheme that the utility model is taked is: a kind of positive and negative accent cage type off circuit tap changer that is used for transformer, comprise operating mechanism, the centre rotational axis that is connected with operating mechanism and positioner, be arranged on one group of insulating support around the centre rotational axis, at interval and the polarity that is fixed on a plurality of polarity contact layers and a plurality of selection contact layer on the described insulating support, is arranged on each polarity contact layer that is staggered up and down decide sets of contacts, sets of contacts is decided in selection of being arranged on each selection contact layer, between the upper and lower every a plurality of moving contact components that are fixed on centre rotational axis; Be characterized in that the polarity of described each polarity contact layer is decided sets of contacts and comprised that a positive polarity is decided contact and a negative polarity is decided contact; Described positive polarity is decided contact and negative polarity and is decided contact and all cross over more than one tap position.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: the positive polarity that the polarity of described each polarity contact layer is decided sets of contacts decides contact and a negative polarity is decided the inwall that contact all is fixedly installed on described insulating support according to the order of sequence.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: it is all identical that the positive polarity of described each polarity contact layer is decided the structure that contact and negative polarity decide contact, constitute by an oval camber plate, the circular arc that this oval camber plate inner face is provided with an elongated moving contact interlock for moving contact component electrically contacts track.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: described positive polarity is decided contact and negative polarity, and to decide the cross section of contact all T-shaped, electrically contacts in described circular arc on the end limit of track to have projection.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: described formation positive polarity decide contact and negative polarity decide contact oval camber plate and the pivot concentric of centre rotational axis.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: decide the arc length of oval camber plate of contact identical with constituting negative polarity for the oval camber plate that described formation positive polarity is decided contact, perhaps constitutes negative polarity and decide the arc length of the oval camber plate of contact and be shorter than the arc length that formation positive polarity is decided the oval camber plate of contact.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: the circular arc that described formation positive polarity is decided the oval camber plate of contact electrically contacts track and constitutes negative polarity and decide the circular arc of the oval camber plate of contact and electrically contact track and all be made as the inclined-plane each other at an adjacent end.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: described each positive polarity decide contact in the installation site of each polarity contact layer on same perspective plane.
Above-mentioned positive and negative accent cage type off circuit tap changer, wherein: described each negative polarity is decided contact and is selected the installation site of contact layer on same perspective plane at each.
Because the utility model has adopted above technical scheme, each polarity contact layer only exists a positive polarity to decide contact and a negative polarity is decided contact, and this positive polarity is decided contact and negative polarity and is decided contact and be made of an oval camber plate of crossing over more than one tap position respectively, electrically contact track at the inner face of oval camber plate and the circular arc that is provided with an elongated moving contact interlock for moving contact component, therefore, during the positive polarity pressure regulation, the moving contact of moving contact component is when certain certain contact moves to adjacent another and decides contact, this moving contact electrically contacts track by circular arc, decides contact with positive polarity all the time and connects.During the negative polarity pressure regulation, the moving contact of moving contact component is when certain certain contact moves to adjacent another and decides contact, and this moving contact electrically contacts track by circular arc, decides contact with negative polarity all the time and connects.Thereby it is level and smooth that contact is connected, and contact is better, and can alleviate operating physical force.
Description of drawings
Concrete structure of the present utility model is further provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the overall structure schematic diagram of the positive and negative accent cage type of prior art off circuit tap changer.
Fig. 2 is the C-C cutaway view (concrete structure that shows polarity contact layer) of Fig. 1.
Fig. 3 is the B-B cutaway view (showing the concrete structure of selecting the contact layer) of Fig. 1.
Fig. 4 is the overall structure schematic diagram of the positive and negative accent cage type of the utility model off circuit tap changer.
Fig. 5 is the A-A cutaway view (concrete structure that shows polarity contact layer) of Fig. 3.
Fig. 6 is the B-B cutaway view (showing the concrete structure of selecting the contact layer) of Fig. 3.
Fig. 7 is the stereogram of the reflection polarity contact layer segment of the positive and negative accent cage type of the utility model off circuit tap changer.
Embodiment
See also Fig. 3～Fig. 6.A kind of positive and negative accent cage type off circuit tap changer that is used for transformer of the utility model comprises operating mechanism 21, centre rotational axis 22 that is connected with operating mechanism and positioner 23, be arranged on centre rotational axis one group of insulating support 24 on every side, at interval and be staggered up and down and be fixed on a plurality of polarity contact layers 25 and a plurality of selection contact layer 26 on the described insulating support, the polarity that is arranged on each polarity contact layer is decided sets of contacts, be arranged on each and select deciding the selection that contact 28 constitutes by a plurality of selections and deciding sets of contacts of contact layer, and a plurality of moving contact components 29 that are fixed on centre rotational axis.Positioner 23 is fixed on the ring flange 20, one group of insulating support 24 by ring flange 20 be fixed on centre rotational axis 22 around.The polarity of described each polarity contact layer is decided sets of contacts and is comprised that a positive polarity is decided contact 271 and a negative polarity is decided contact 272; Described positive polarity is decided contact and negative polarity and is decided contact and all cross over more than one tap position.
Please cooperate and consult Fig. 4, Fig. 6, Fig. 4 is the A-A cutaway view (concrete structure that shows polarity contact layer) of Fig. 3, and Fig. 6 is the stereogram of the reflection polarity contact layer segment of the positive and negative accent cage type of the utility model off circuit tap changer.A positive polarity described in the utility model decides contact 271 and a negative polarity is decided the inwall that contact 272 all is fixedly installed on the insulating support that is positioned at each polarity contact layer according to the order of sequence, and, described each positive polarity decide contact and each negative polarity decide contact in the installation site of each polarity contact layer on same perspective plane.
In the present embodiment: it is identical that the positive polarity of described each polarity contact layer is decided structure of contact terminal, constitutes by an oval camber plate, and the circular arc that this oval camber plate inner face is provided with an elongated moving contact interlock for moving contact component electrically contacts track 2711.The pivot concentric of described oval camber plate and centre rotational axis.
It is identical that the negative polarity of described each polarity contact layer is decided structure of contact terminal, constitutes by an oval camber plate, and the circular arc that this oval camber plate inner face is provided with an elongated moving contact interlock for moving contact component electrically contacts track 2721.The pivot concentric of described oval camber plate and centre rotational axis.
In actual the use, decide the arc length of oval camber plate of contact identical with constituting negative polarity for the oval camber plate that described formation positive polarity is decided contact, perhaps constitutes negative polarity and decide the arc length of the oval camber plate of contact and be shorter than the arc length that formation positive polarity is decided the oval camber plate of contact.
For making moving contact and deciding contact stable action when contacting, circular arc of deciding the oval camber plate of contact as positive polarity of the present utility model electrically contacts track 2711 and all is made as the inclined-plane with the adjacent end that the circular arc of deciding the oval camber plate of contact as negative polarity electrically contacts track 2721, wherein positive polarity decide contact an end that is made as the inclined-plane shown in a among Fig. 4, negative polarity is decided an end that is made as the inclined-plane of contact shown in b among Fig. 4.
In the present embodiment, positive polarity is decided contact and negative polarity, and to decide the cross section of contact all T-shaped, shown in c among Fig. 6.For making moving contact walking reliable, electrically contact in described circular arc on the end limit of track and have projection, shown in d among Fig. 6.
The utility model is when positive polarity pressure regulation or negative polarity pressure regulation, the moving contact of moving contact component is when certain certain contact moves to adjacent another and decides contact, described moving contact electrically contacts track by circular arc, decides contact or negative polarity with each autocorrelative positive polarity all the time and decides contact and connect.Have simple in structure, contact connect level and smooth, reliability is high, operating physical force is light, help the advantage of volume of transformer miniaturization.
Claims (9)
1. positive and negative accent cage type off circuit tap changer that is used for transformer, comprise operating mechanism, the centre rotational axis that is connected with operating mechanism and positioner, be arranged on one group of insulating support around the centre rotational axis, at interval and the polarity that is fixed on a plurality of polarity contact layers and a plurality of selection contact layer on the described insulating support, is arranged on each polarity contact layer that is staggered up and down decide sets of contacts, sets of contacts is decided in selection of being arranged on each selection contact layer, between the upper and lower every a plurality of moving contact components that are fixed on centre rotational axis; It is characterized in that the polarity of described each polarity contact layer is decided sets of contacts and comprised that a positive polarity is decided contact and a negative polarity is decided contact; Described positive polarity is decided contact and negative polarity and is decided contact and all cross over more than one tap position.
2. positive and negative accent cage type off circuit tap changer according to claim 1 is characterized in that: the positive polarity that the polarity of described each polarity contact layer is decided sets of contacts decides contact and a negative polarity is decided the inwall that contact all is fixedly installed on described insulating support according to the order of sequence.
3. positive and negative accent cage type off circuit tap changer according to claim 1, it is characterized in that: it is all identical that the positive polarity of described each polarity contact layer is decided the structure that contact and negative polarity decide contact, constitute by an oval camber plate, the circular arc that this oval camber plate inner face is provided with an elongated moving contact interlock for moving contact component electrically contacts track.
4. positive and negative accent cage type off circuit tap changer according to claim 3 is characterized in that: described positive polarity is decided contact and negative polarity, and to decide the cross section of contact all T-shaped, electrically contacts in described circular arc on the end limit of track to have projection.
5. positive and negative accent cage type off circuit tap changer according to claim 3 is characterized in that: described formation positive polarity decide contact and negative polarity decide contact oval camber plate and the pivot concentric of centre rotational axis.
6. positive and negative accent cage type off circuit tap changer according to claim 3, it is characterized in that: decide the arc length of oval camber plate of contact identical with constituting negative polarity for the oval camber plate that described formation positive polarity is decided contact, perhaps constitutes negative polarity and decide the arc length of the oval camber plate of contact and be shorter than the arc length that formation positive polarity is decided the oval camber plate of contact.
7. positive and negative accent cage type off circuit tap changer according to claim 3 is characterized in that: the circular arc that described formation positive polarity is decided the oval camber plate of contact electrically contacts track and constitutes negative polarity and decide the circular arc of the oval camber plate of contact and electrically contact track and all be made as the inclined-plane mutually at an adjacent end.
8. positive and negative accent cage type off circuit tap changer according to claim 1 is characterized in that: described each positive polarity decide contact in the installation site of each polarity contact layer on same perspective plane.
9. positive and negative accent cage type off circuit tap changer according to claim 1 is characterized in that: described each negative polarity is decided contact and is selected the installation site of contact layer on same perspective plane at each.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202686728U CN201773682U (en) | 2010-07-23 | 2010-07-23 | Positive and negative regulation cage type non-excitation tapping switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202686728U CN201773682U (en) | 2010-07-23 | 2010-07-23 | Positive and negative regulation cage type non-excitation tapping switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773682U true CN201773682U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202686728U Expired - Fee Related CN201773682U (en) | 2010-07-23 | 2010-07-23 | Positive and negative regulation cage type non-excitation tapping switch |
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| Country | Link |
|---|---|
| CN (1) | CN201773682U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681315A (en) * | 2015-02-17 | 2015-06-03 | 任宏宇 | Core structure of tapping switch |
| CN106783261A (en) * | 2017-02-07 | 2017-05-31 | 河南森源电气股份有限公司 | A kind of on-load switch and its hand-operating device |
-
2010
- 2010-07-23 CN CN2010202686728U patent/CN201773682U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681315A (en) * | 2015-02-17 | 2015-06-03 | 任宏宇 | Core structure of tapping switch |
| CN106783261A (en) * | 2017-02-07 | 2017-05-31 | 河南森源电气股份有限公司 | A kind of on-load switch and its hand-operating device |
| CN106783261B (en) * | 2017-02-07 | 2019-03-19 | 河南森源电气股份有限公司 | A kind of on-load switch and its manual operation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20110723 |