CN1933055A - Non-field cage-shape tap changer for transformer - Google Patents

Non-field cage-shape tap changer for transformer Download PDF

Info

Publication number
CN1933055A
CN1933055A CNA2006101245073A CN200610124507A CN1933055A CN 1933055 A CN1933055 A CN 1933055A CN A2006101245073 A CNA2006101245073 A CN A2006101245073A CN 200610124507 A CN200610124507 A CN 200610124507A CN 1933055 A CN1933055 A CN 1933055A
Authority
CN
China
Prior art keywords
transformer
fixed contact
annular fixed
cage type
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2006101245073A
Other languages
Chinese (zh)
Other versions
CN1933055B (en
Inventor
秦伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHAN TAIPU TRANSFORMER CHANGER CO Ltd
Original Assignee
WUHAN TAIPU TRANSFORMER CHANGER CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by WUHAN TAIPU TRANSFORMER CHANGER CO Ltd filed Critical WUHAN TAIPU TRANSFORMER CHANGER CO Ltd
Priority to CN2006101245073A priority Critical patent/CN1933055B/en
Priority to PCT/CN2007/000516 priority patent/WO2008031302A1/en
Priority to DE112007001415.6T priority patent/DE112007001415B4/en
Publication of CN1933055A publication Critical patent/CN1933055A/en
Application granted granted Critical
Publication of CN1933055B publication Critical patent/CN1933055B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers
    • H01H2009/0022—Mounting of the fixed contacts or taps on cylindrical wall of oil vessel containing the tap changer; Details of screening

Landscapes

  • Housings And Mounting Of Transformers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

A cage-style tap-changer without excitation for transformer relates to up and down brackets and there are insulating pole of edge connecting between them. There are interval ring static state relays on the axes of insulating pole and there are dynamic relays at the up and down brackets and inside of the ring static state relays. The dynamic relays connects with one up/down gearing, and there are dynamic relays connects with closed two static state relays in the outside of dynamic relays subassembly and the corresponding ring static state relays. The beneficial effect is 1. The dynamic and static state relays touch with stabilization and short moment when switch operation moves along the axes and high orientation precision. 2. Static state relays enhance the stiffness of cage-style with strong anti-short ability of switch for large current and single-phase switch with high and insulated level.

Description

A kind of excitation-free cage type tapping switch for transformer
Technical field
The present invention relates to a kind of excitation-free cage type tapping switch for transformer, is the further improvement to existing excitation-free cage type tapping switch.
Background technology
Existing excitation-free cage type tapping switch mainly comprises upper and lower bearing and along the circumferential spaced apart insulating bar of last undersetting, be furnished with fixed contact at each insulating bar axially spaced-apart, the fixed contact group that the corresponding formation of fixed contact on each insulating bar is circumferential, between last undersetting, be coated with axis, by supporter the moving contact of cross-over connection between two adjacent fixed contacts is set corresponding to fixed contact on the axis, when axis rotates and locate, moving contact is done circumferential plane and is rotated respectively and different fixed contact group cross-over connections, realizes regulatory function.The cage type switch of this structure is provided with three layers of dynamic/static contact usually vertically, constitutes the typical three-phase excitation-free cage type tapping switch.During, three-phase high-current switch single-phase when being used as, can with parallel three phase when one mutually or every many group dynamic/static contact groups axially in parallel mutually use.Existing cage type switch is used as three phase times, and maximum current is generally 1200A and since dispersiveness of making and lead strain when making factor such as insulating bar distortion make parallel connection each contact shunting be difficult to evenly, therefore when single-phase generally as 2500A to 3000A.But this structure greatest drawback when making high-current switch is cage type rigidity wretched insufficiency, and is bulky, shields complexity when being used for high voltage everywhere, and the excessive partial discharge quantity that causes of local field strength is big, and complex structure, the cost of manufacture height.In addition, because the moving contact radius is big, moving contact slided and causes operational torque big when axis rotated, and the moving contact positioning accuracy is lower, often causes loose contact, influences the serviceability of switch.
At present, along with the single transformer capacity is increasing, transformer current and voltage are also more and more higher, and therefore also increasing to the switch specification requirement, the shortcoming of conventional switch all the more highlights, and operational reliability reduces, and failure rate improves.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiency that above-mentioned prior art exists and provides a kind of good rigidity, contact stabilization reliable, and the little excitation-free cage type tapping switch of operational torque.
The present invention for the technical scheme that problem adopted of the above-mentioned proposition of solution is: comprise upper and lower bearing 2,3, circumferentially be connected with insulating bar 4 between the upper and lower bearing, its difference is to install annular fixed contact 5 along the axially spaced-apart of insulating bar, between upper and lower bearing, also be provided with moving contact component with the annular fixed contact inboard, moving contact component and one up and down transmission device links, and the corresponding annular fixed contact of the periphery of moving contact component is installed on and the adjacent two fixed contacts moving contact 7 of cross-over connection mutually.
Press such scheme, described moving contact component comprises shell-like supporter 8, circumferentially is installed on strip moving contact 7 in the periphery of shell-like supporter, and configuration spring 10.
Press such scheme, described transmission device up and down is made of the drive screw 6 and the swivel nut 11 that are connected between the undersetting, and swivel nut and supporter 8 link, inboard and directed guide rod 15 phase configuration of supporter; The upper end of transmission device and operating mechanism 1 link up and down.Operating mechanism drives drive screw, drives moving contact axial displacement by moving up and down of swivel nut, realizes the tap position conversion.
Press such scheme, described annular fixed contact 5 links with each insulating bar.
Annular fixed contact of the present invention is provided with as required, only being connected in coil one phase time is single-phase switch, and correspondence is provided with a moving contact component, the switch of phase structure is connected in series two or three vertically, every correspondence is provided with a moving contact component, each fixed contact correspondence is connected in two-phase, three phase times of coil, will constitute two-phase, tap changer for three phases.Insulate because of phase insulation often is higher than between every phase contact, this moment, the switch height dimension was higher, even also can make full use of effective axial space of transformer inside when arranging like this on transformer.
Beneficial effect of the present invention is: 1, this cage type switch is because the interior moving contact of employing annular fixed contact and ring moves axially structure, fixed contact is convenient to processing and circumferentially circularity is good, easier assurance precision, thereby axially go up each dynamic and static contact contact condition high conformity, contact stabilization is reliable, and the switch actuating torque is little when moving axially, positioning accuracy is high; 2, fixed contact is that ring-type and multiple spot and insulating bar link, play and strengthen the effect of cage type body rigidity, the rigidity of structure of cage type switch is improved greatly, and axial electrode is a ring-type, and insulation, that performance is put in office is good, moving contact is along the middle part symmetric arrangement, stressed cancelling out each other, thereby axis part good rigidly, the switch anti-short circuit capability is strong, be adapted to big electric current especially, especially the high single-phase switch of insulation level between contact; 3, fixed contact is along switch main body insulating bar axial distribution, supporter and moving contact are simultaneously also axial arranged in fixed contact, make the annular fixed contact inner space be used effectively, the switch external diameter dwindles greatly, and the ring-type fixed contact also plays external shielding action, reach external insulation level in helping improving greatly mutually, reduce partial discharge, high voltage electric field is simplified; 4, structure is comparatively simple, and cost of manufacture is low.
Description of drawings
Fig. 1 is the front view of one embodiment of the invention.
Fig. 2 is the E-E cutaway view of Fig. 1.
Fig. 3 is the I enlarged drawing among Fig. 1.。
Elementary diagram when Fig. 4 is the present invention's list spanning connection function.
Fig. 5 is the single-phase series-parallel connection schematic diagram of the present invention
Fig. 6 elementary diagram during for three-phase Y-△ translation function of the present invention.
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing.
One embodiment of the present of invention as shown in Figure 1, 2, 3, it is a single-phase excitation-free cage type tapping switch, has upper and lower bearing 2,3, be coated with drive screw 6 between the upper and lower bearing, drive screw top links to each other with operating mechanism 1, drive screw and swivel nut 11 phase configuration that link with supporter constitute screw transmission device up and down; Periphery between upper and lower bearing is installed on 6～8 insulating bars 4, the insulating bar inboard is furnished with annular fixed contact 5 vertically at interval, annular fixed contact links by screw 13 and each insulating bar, annular fixed contact can be provided with a plurality of vertically, be generally 4～6, the arranged outside of annular fixed contact has binding post 9, links with the transformer tap lead; Be provided with moving contact component corresponding to annular fixed contact, described moving contact component comprises shell-like supporter 8, periphery at the shell-like supporter circumferentially is installed on many strip moving contacts 7, the contact-making surface of strip moving contact is an arc surface, by upper and lower scroll chuck 17 activity clampings, the back disposes the spring 10 of radial effect, make moving contact energy radiai adjustment, moving contact 7 and two adjacent annular fixed contact cross-over connections mutually, swivel nut 11 about the supporter 8 of moving contact component and the screw in the transmission device links, and disposes two directed guide rods 15; When operating mechanism 1 drives drive screw 6 rotations, moving contact component will move up and down, and also do radial floating in the gearshift procedure, thereby realize multiple tap position conversion.For improving to external electric field, can install grading shield 16 in screw 13 peripheries that connect annular fixed contact, shield.The spacing of annular fixed contact is by insulation level is definite therebetween.Moving contact 7 quantity are determined that by the switching current size binding post 9 quantity are then by switching current and the decision of transformer lead quantity.When alternate and above earth potential level is higher when switch, shading ring 12 can be set between upper and lower bearing.Present embodiment also can be used as single-phase series-parallel connection mode and uses.
Shunting switch structure of the present invention can realize single-phase series-parallel connection according to the difference of the mode of connection, as shown in Figure 5; Also can realize single spanning wiring, as shown in Figure 4; Also has three-phase Y-△ conversion wiring, as shown in Figure 6.
The present invention is as being two-phase, threephase switch, and then transmission device, insulating bar lengthening up and down repeat to install the dynamic and static contact of phase structure, can realize two, the three-phase adjusted in concert.
The present invention is specially adapted to high voltage, big electric current and the few switch of gear, can satisfy big, special type transformer demand.

Claims (8)

1, a kind of excitation-free cage type tapping switch for transformer, comprise upper and lower bearing (2,3), circumferentially be connected with insulating bar (4) between the upper and lower bearing, it is characterized in that installing annular fixed contact (5) along the axially spaced-apart of insulating bar, between upper and lower bearing, also be provided with moving contact component with the annular fixed contact inboard, moving contact component and one up and down transmission device links, and the corresponding annular fixed contact of the periphery of moving contact component is installed on and the adjacent two fixed contacts moving contact of cross-over connection (7) mutually.
2, by the described excitation-free cage type tapping switch for transformer of claim 1, it is characterized in that described moving contact component comprises shell-like supporter (8), circumferentially be installed on strip moving contact (7) in the periphery of shell-like supporter, and configuration spring (10).
3, by claim 1 or 2 described excitation-free cage type tapping switch for transformer, it is characterized in that described transmission device up and down is made of the drive screw (6) and the swivel nut (11) that are connected between the undersetting, swivel nut and supporter link, inboard and directed guide rod (15) phase configuration of supporter.
4,, it is characterized in that the upper end and the operating mechanism (1) of transmission device link up and down by claim 1 or 2 described excitation-free cage type tapping switch for transformer.
5,, it is characterized in that described annular fixed contact (5) and each insulating bar (4) link by claim 1 or 2 described excitation-free cage type tapping switch for transformer.
6, by claim 1 or 2 described excitation-free cage type tapping switch for transformer, it is characterized in that annular fixed contact is provided with 4～6 vertically, the arranged outside of annular fixed contact has binding post (9).
7, by claim 1 or 2 described excitation-free cage type tapping switch for transformer, it is characterized in that between upper and lower bearing, being provided with shading ring (12).
8, by claim 1 or 2 described excitation-free cage type tapping switch for transformer, it is characterized in that the periphery between upper and lower bearing is installed on 6～8 insulating bars (4), the insulating bar inboard is furnished with annular fixed contact (5) vertically at interval, annular fixed contact links by screw (13) and each insulating bar, installs grading shield (16) in the screw periphery that connects annular fixed contact.
CN2006101245073A 2006-09-12 2006-09-12 Non-field cage-shape tap changer for transformer Active CN1933055B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2006101245073A CN1933055B (en) 2006-09-12 2006-09-12 Non-field cage-shape tap changer for transformer
PCT/CN2007/000516 WO2008031302A1 (en) 2006-09-12 2007-02-14 Non-excited tap-changer with shielding device
DE112007001415.6T DE112007001415B4 (en) 2006-09-12 2007-02-14 Voltage-free tap changer for a cage-type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2006101245073A CN1933055B (en) 2006-09-12 2006-09-12 Non-field cage-shape tap changer for transformer

Publications (2)

Publication Number Publication Date
CN1933055A true CN1933055A (en) 2007-03-21
CN1933055B CN1933055B (en) 2010-08-04

Family

ID=37878820

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006101245073A Active CN1933055B (en) 2006-09-12 2006-09-12 Non-field cage-shape tap changer for transformer

Country Status (3)

Country Link
CN (1) CN1933055B (en)
DE (1) DE112007001415B4 (en)
WO (1) WO2008031302A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022906A1 (en) * 2009-08-26 2011-03-03 武汉泰普变压器开关有限公司 Cage-style tap-changer without excitation for transformer
WO2011029251A1 (en) * 2009-09-08 2011-03-17 武汉泰普变压器开关有限公司 Non-excitation cage-shaped voltage-regulation tap changer for transformer
CN101661834B (en) * 2009-08-26 2012-10-10 武汉泰普变压器开关有限公司 Off circuit tap changer for transformer
CN105261499A (en) * 2015-11-03 2016-01-20 上海华明电力设备制造有限公司 High-voltage big-current multistage positive and negative adjustment cage-type tap changer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203106A1 (en) * 2016-02-26 2017-08-31 Siemens Aktiengesellschaft Arrangement for the electrostatic shielding of an electrical system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2411345A1 (en) * 1974-03-09 1975-09-11 Transformatoren Union Ag Transformer tap changing mechanism with fine selection - has support frame between slip ring column and contact cage
DE2529381C3 (en) * 1975-07-02 1979-05-31 Maschinenfabrik Reinhausen Gebrueder Scheubeck Gmbh & Co Kg, 8400 Regensburg Step switch for step transformers with diverter switch housed in a cylindrical oil container
DE2815047C2 (en) * 1978-04-07 1985-07-18 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Three-phase tap selector for tap transformers
DE2845463C3 (en) * 1978-10-19 1982-02-25 Maschinenfabrik Reinhausen Gebrüder Scheubeck GmbH & Co KG, 8400 Regensburg Load selector for step transformers
DE3416050A1 (en) * 1984-04-30 1985-10-31 Transformatoren Union Ag, 7000 Stuttgart LOAD SELECTOR FOR STAGE TRANSFORMERS
DE3622716A1 (en) * 1986-07-05 1988-01-21 Reinhausen Maschf Scheubeck Load selector, provided with a preselector, for tapped transformers
CN2082453U (en) * 1990-12-28 1991-08-07 马延绪 Compound type branch switch of air load
CN2221256Y (en) * 1993-11-22 1996-02-28 刘刚 non-excitation tap switch
CN2253042Y (en) * 1996-04-09 1997-04-23 沈阳变压器组件开发中心 Vacuum loaded shunting switch
DE19836463C1 (en) * 1998-08-12 1999-10-21 Reinhausen Maschf Scheubeck Electric stepping switch for stepping transformer
JP3347301B2 (en) * 1999-07-12 2002-11-20 有限会社田島製作所 Tap selector for load tap changer
CN2468142Y (en) * 2001-01-09 2001-12-26 刘刚 Non-excitation linear voltage-regulating drum tap changer
CN1555070A (en) * 2003-12-29 2004-12-15 刚 刘 Excitation-free cage shape tapping switch
CN200944364Y (en) * 2006-09-12 2007-09-05 武汉泰普变压器开关有限公司 Off-circuit cage tap-changer for transformer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011022906A1 (en) * 2009-08-26 2011-03-03 武汉泰普变压器开关有限公司 Cage-style tap-changer without excitation for transformer
CN101661834B (en) * 2009-08-26 2012-10-10 武汉泰普变压器开关有限公司 Off circuit tap changer for transformer
WO2011029251A1 (en) * 2009-09-08 2011-03-17 武汉泰普变压器开关有限公司 Non-excitation cage-shaped voltage-regulation tap changer for transformer
CN105261499A (en) * 2015-11-03 2016-01-20 上海华明电力设备制造有限公司 High-voltage big-current multistage positive and negative adjustment cage-type tap changer

Also Published As

Publication number Publication date
DE112007001415T5 (en) 2009-04-30
DE112007001415B4 (en) 2017-04-06
CN1933055B (en) 2010-08-04
WO2008031302A1 (en) 2008-03-20

Similar Documents

Publication Publication Date Title
CN101681730B (en) Switching arrangement
CN200944364Y (en) Off-circuit cage tap-changer for transformer
CN1933055B (en) Non-field cage-shape tap changer for transformer
JP6316284B2 (en) Load tap changer
KR101695798B1 (en) Vacuum arc-extinguishing circuit changeover selector
KR20140060296A (en) On-load tap changer
CN100442410C (en) Off-circuit tap-changer with shielding device
JP2002051416A (en) Gas-insulated switchgear
CN201956179U (en) Non-excitation cage-shaped linear voltage-regulation tapping switch
CN2922098Y (en) Field-free tap changer with shield
CN2927304Y (en) Double-gear coaxial rotary switch and its double-motor fan
CN114026665B (en) Multi-phase selector-preselector device for on-load tap-changer
CN201383431Y (en) Non-excitation tapping switch with contact isolating device
Oates et al. Tap changer for distributed power
US9640340B2 (en) Selector switch for tap-changing transformers and support arm for a tap selector thereof
CN2681308Y (en) Off circuit tap changer
EP3171373B1 (en) On-load tap changing device
CN201383428Y (en) Non-excitation tapping switch with contact isolating device
CN101661834B (en) Off circuit tap changer for transformer
CN113838702B (en) Switching core of on-load tap-changer and on-load tap-changer
CN2221256Y (en) non-excitation tap switch
CN215896191U (en) Miniaturized on-load tap changer and on-load tap changing distribution transformer
CN201498342U (en) No-excitation tapping switch used in transformer
CN110504115B (en) Double-vacuum single-resistor on-load capacity-regulating tap switch
CN203300411U (en) Transformer externally hung on-load tap switch

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant