CN201359915Y - Vacuum tube switch core of on-load tap switch - Google Patents
Vacuum tube switch core of on-load tap switch Download PDFInfo
- Publication number
- CN201359915Y CN201359915Y CNU2009200683845U CN200920068384U CN201359915Y CN 201359915 Y CN201359915 Y CN 201359915Y CN U2009200683845 U CNU2009200683845 U CN U2009200683845U CN 200920068384 U CN200920068384 U CN 200920068384U CN 201359915 Y CN201359915 Y CN 201359915Y
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- vacuum bubbles
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- vacuum tube
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Abstract
A vacuum tube switch core of an on-load tap switch comprises three vacuum tube groups, wherein each vacuum tube group is one-phase vacuum tube transition switch unit; the three-phase vacuum tube groups are arranged on a circumference at an angle of 120 degree; each phase vacuum tube transition switch unit consists of four vacuum tubes; and the four vacuum tubes are arranged on a circumference. When the on-load tap switch is switched, electric arcs are only generated in the vacuum tubes instead of outside the vacuum tubes. Accordingly, no electric arcs are generated in the oil chamber of the on-load tap switch so as to prevent the insulated transformer oil in the oil chamber from being contaminated by the electric arcs, thereby keeping the insulation performance of the transformer oil for long term, greatly reducing the fault rate of the switch, greatly reducing the maintenance load and material loss of the switch, and prolonging the service life of the switch and the transformer.
Description
Technical field
The utility model relates to the on load tap changer technical field of power transformer, particularly a kind of vacuum tube switching core of replacing existing on load tap changer copper tungsten contact switch core.
Background technology
On load tap changer is used for power transformer or industrial transformers, does not carry out tap under the situation of interrupt load electric current (situation of carrying is promptly arranged) at transformer, changes the turn ratio of transformer, thereby adjusts the output voltage of transformer.
Combined loaded tap-changer wherein, the tap selector that is carried out preselected tap position by the diverter switch of a belt current conversion and under belt current situation not combines.Diverter switch comprises switch core and diverter switch grease chamber, switch core is mainly by the diverter switch insulating cylinder, upper and lower flange, form columnar three arcs, spring energy-storage quick mechanism, transmission central shaft, decide contact for two groups that are fixed on the every arc, one group of neutral point contact, the two pairs of bullet contacts and transition resistance, the contact switching mechanism is formed.
The contact switching mechanism has comprised the main contact part of long-term through-flow effect and has played the transition contact part of transition conducting effect, the transition contact part that the spring energy-storage quick mechanism has driven the main contact part of long-term through-flow effect and played transition conducting effect by the center power transmission shaft is finished switching according to the changeover program action.
The transition contact part comprises main switching contact and transition contact again, main switching contact and transition contact are commonly called as on load tap changer and are " mahjong " contact, the employing copper-tungsten is made, though have the advantage that the life-span is long, connecting-disconnecting function is strong, but still there are the following problems:
1. transition contact and main switching contact and the break-make of deciding contact produce electric arc, cause transition contact, main switching contact scaling loss, cause the shunting switch life-span short, and accident of power supply also takes place simultaneously easily.
2. transition contact, main switching contact and the electric arc deciding to produce between the contact pollute the transformer oil in the diverter switch grease chamber easily, have shortened the maintenance period of the indoor transformer oil of circuit-breaker oil, have increased the physical deterioration that maintenance load and maintenance produce.
The utility model content
Technical problem to be solved in the utility model provides a kind of vacuum tube switching core of on load tap changer, it uses the vacuum bubbles group to replace the copper tungsten contact group that has now in the on load tap changer switch core, produces thereby reach the indoor no electric arc of loaded tap switch oil.
Technical problem to be solved in the utility model can be achieved through the following technical solutions:
A kind of vacuum tube switching core of on load tap changer comprises three groups of vacuum bubbles groups, and each group vacuum bubbles group is a phase vacuum bubbles transition switch unit, and three-phase vacuum bubbles group is pressed 120 ° of layouts on circumference.
Each phase vacuum bubbles transition switch unit is made up of 4 vacuum bubbles, and 4 vacuum bubbles are also by circle distribution, and wherein two vacuum bubbles strip resistance transition replaces former two copper tungsten transition contacts; Two vacuum bubbles non-resistances transition in addition substitutes former two copper tungsten master switching contacts.
In a preferred embodiment of the present utility model, 4 vacuum bubbles upper ends in each phase vacuum bubbles transition switch unit are communicated with by the arc conductive plate that is contained in the train wheel bridge, and the arc conductive plate is communicated with the neutral point contact; Described 2 vacuum bubbles lower ends that play a transition role are continuous with corresponding transition resistance; Push rod upper hinge in each vacuum bubbles lower end has a lever, and the fulcrum hinge of described lever is on a U-shaped support, and described U-shaped support is installed on the lower plate, is equipped with one at the other end of described lever and bumps wheel; Under the control of plane cam track, realize the conducting and the disconnection of vacuum bubbles.
The vacuum tube switching core of on load tap changer of the present utility model uses vacuum bubbles as transition element, avoided copper tungsten transition contact, copper tungsten master switching contact scaling loss in the former on load tap changer that the switch electric life is influenced, avoided the pollution of electric arc simultaneously, reduced the maintenance and the material consumption amount of switch transformer oil in the switch grease chamber.
Description of drawings
Concrete characteristic of the present utility model is further described by following embodiment and accompanying drawing thereof, wherein:
Fig. 1 is the employed three-phase vacuum bubbles of the vacuum tube switching core of a utility model on load tap changer group mounting structure schematic diagram.
Fig. 2 is the vacuum tube switching core phase vacuum bubbles group mounting structure schematic diagram wherein of the utility model on load tap changer.
Fig. 3 is that the vacuum tube switching core three-phase vacuum bubbles group of the utility model on load tap changer is pressed the circumference schematic diagram.
Fig. 4 is existing each mutually former copper tungsten contact conversion program schematic diagram.
Fig. 5 is the utility model one phase vacuum bubbles transition switch unit conversion program schematic diagram.
Fig. 6 is an existing phase copper tungsten contact and the utility model one vacuum bubbles transition switch unit conducting program schematic diagram mutually.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with concrete diagram, nearly step elaboration the utility model.
As Fig. 1, Fig. 2, shown in Figure 3, the vacuum tube switching core of on load tap changer of the present utility model is divided into three groups of vacuum bubbles groups by 12 vacuum bubbles, and the three-phase copper tungsten contact of replacing existing on load tap changer switches.
12 vacuum bubbles 620 are arranged between the upper and lower clamping plate by circumference, and per 4 vacuum bubbles 620 are one group, constitute a phase vacuum bubbles transition switch unit.4 vacuum bubbles V1, V2 of each phase vacuum bubbles transition switch unit, the upper end of V3, V4 are communicated with by the arc conductive plate 610 that is contained in the train wheel bridge (not shown), and arc conductive plate 610 is connected with neutral point contact 230; Push rod 630 upper hinges in each vacuum bubbles 620 lower end have a lever 640, and the fulcrum hinge of lever 640 is on a U-shaped support 650, and U-shaped support 650 is installed on the lower plate 220, are equipped with one at the other end of lever 640 and bump wheel 660; Under the control of plane cam track 240,4 vacuum bubbles V1, V2, V3, V4 of each phase vacuum bubbles transition switch unit move according to changeover program, realize conducting and disconnection.
Referring to Fig. 2, each phase vacuum bubbles transition switch unit is made up of 4 vacuum bubbles V1, V2, V3, V4,4 vacuum bubbles V1, V2, V3, V4 also press circle distribution, two vacuum bubbles V1, V4 of each phase vacuum bubbles transition switch unit both sides are main break-make vacuum bubbles, the non-resistance transition substitutes former two copper tungsten master switching contacts; Two vacuum bubbles V2, V3 in the middle of each phase vacuum bubbles transition switch unit are the transition vacuum bubbles, and the strip resistance transition replaces former two copper tungsten transition contacts.
Referring to Fig. 4, when the switch core of existing on load tap changer moved, copper tungsten master switching contact K1 connected, when main contact M1 disconnects, copper tungsten transition contact K2 connects, then copper tungsten transition contact K3 connects, and copper tungsten transition contact K2 disconnects, and then copper tungsten master switching contact K4 connects, copper tungsten transition contact K3 disconnects, main contact M2 connects, and copper tungsten master switching contact K4 disconnects, and finishes the switching of main contact from N to the N+1 contact.
Referring to Fig. 5, when the vacuum tube switching core of on load tap changer of the present utility model moves, the vacuum bubbles V1 that plays main on-off action connects, when main contact M1 disconnects, the vacuum bubbles V2 that plays a transition role connects, the vacuum bubbles V3 that then plays a transition role connects, the vacuum bubbles V2 that plays a transition role disconnects, the vacuum bubbles V4 that has followed main on-off action again connects, the vacuum bubbles V3 that plays a transition role disconnects, main contact M2 connects, and the vacuum bubbles V4 that plays main on-off action disconnects, and finishes the switching of main contact from N to the N+1 contact.
Referring to Fig. 6, the conducting program of the utility model one phase vacuum bubbles transition switch unit and existing on load tap changer one the conducting program of copper tungsten contact is identical mutually, therefore substitute existing on load tap changer copper tungsten contact group with vacuum bubbles, say it is feasible fully from principle; In actual moving process, avoided the copper tungsten transition contact in the on load tap changer, copper tungsten master switching contact scaling loss that the switch electric life is influenced; Avoided the pollution of electric arc simultaneously, reduced the maintenance and the material consumption amount of switch transformer oil in the switch grease chamber.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand, the utility model is not restricted to the described embodiments, that describes in the foregoing description and the specification just illustrates principle of the present utility model, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, also can comprise 2 or 3 vacuum bubbles as each phase vacuum bubbles transition switch unit, wherein 1 vacuum bubbles plays a transition role, residual vacuum puff on-off action.Also be distributed on the same plane as each vacuum bubbles in the three-phase vacuum bubbles transition switch unit and vertical with the central axis of transmission central shaft or the like, these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the vacuum tube switching core of an on load tap changer is characterized in that, comprises three groups of vacuum bubbles groups, and each group vacuum bubbles group is a phase vacuum bubbles transition switch unit, and three-phase vacuum bubbles group is pressed 120 ° of layouts on circumference.
2. vacuum tube switching core as claimed in claim 1 is characterized in that, each phase vacuum bubbles transition switch unit is made up of 4 vacuum bubbles, and 4 vacuum bubbles are also by circle distribution.
3. vacuum tube switching core as claimed in claim 2 is characterized in that, wherein two vacuum bubbles strip resistance transition replaces former two copper tungsten transition contacts, plays a transition role in the switch handoff procedure.
4. vacuum tube switching core as claimed in claim 2 is characterized in that, wherein two vacuum bubbles non-resistances transition substitutes former two copper tungsten master switching contacts; In the switch handoff procedure, play main on-off action.
5. vacuum tube switching core as claimed in claim 1 is characterized in that, 4 vacuum bubbles upper ends in each phase vacuum bubbles transition switch unit are communicated with by the arc conductive plate that is contained in the train wheel bridge, and the arc conductive plate is communicated with the neutral point contact; Described 2 vacuum bubbles lower ends that play a transition role are continuous with corresponding transition resistance; Push rod upper hinge in each vacuum bubbles lower end has a lever, and the fulcrum hinge of described lever is on a U-shaped support, and described U-shaped support is installed on the lower plate, is equipped with one at the other end of described lever and bumps wheel; Under the control of plane cam track, realize the conducting and the disconnection of vacuum bubbles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200683845U CN201359915Y (en) | 2009-03-04 | 2009-03-04 | Vacuum tube switch core of on-load tap switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200683845U CN201359915Y (en) | 2009-03-04 | 2009-03-04 | Vacuum tube switch core of on-load tap switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201359915Y true CN201359915Y (en) | 2009-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200683845U Expired - Fee Related CN201359915Y (en) | 2009-03-04 | 2009-03-04 | Vacuum tube switch core of on-load tap switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201359915Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807472B (en) * | 2009-02-13 | 2012-08-08 | 上海华明电力设备制造有限公司 | Vacuum tube group for replacing copper-tungsten contact group of on-load tap changer |
| CN102709106A (en) * | 2012-05-17 | 2012-10-03 | 上海华明电力设备集团有限公司 | Vacuum arc extinction change-over selector |
| CN102947909A (en) * | 2010-06-22 | 2013-02-27 | 赖茵豪森机械制造公司 | Tap changer |
| CN103354942A (en) * | 2010-11-30 | 2013-10-16 | 赖茵豪森机械制造公司 | Tap changer and vacuum interrupter for a tap changer of this kind |
| CN105655159A (en) * | 2016-01-19 | 2016-06-08 | 浙江宝威电气有限公司 | Novel on-load tap voltage regulating switch |
-
2009
- 2009-03-04 CN CNU2009200683845U patent/CN201359915Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807472B (en) * | 2009-02-13 | 2012-08-08 | 上海华明电力设备制造有限公司 | Vacuum tube group for replacing copper-tungsten contact group of on-load tap changer |
| CN102947909A (en) * | 2010-06-22 | 2013-02-27 | 赖茵豪森机械制造公司 | Tap changer |
| CN102947909B (en) * | 2010-06-22 | 2016-01-20 | 赖茵豪森机械制造公司 | Shunting switch |
| CN103354942A (en) * | 2010-11-30 | 2013-10-16 | 赖茵豪森机械制造公司 | Tap changer and vacuum interrupter for a tap changer of this kind |
| CN102709106A (en) * | 2012-05-17 | 2012-10-03 | 上海华明电力设备集团有限公司 | Vacuum arc extinction change-over selector |
| CN102709106B (en) * | 2012-05-17 | 2015-03-11 | 上海华明电力设备集团有限公司 | Vacuum arc extinction change-over selector |
| CN105655159A (en) * | 2016-01-19 | 2016-06-08 | 浙江宝威电气有限公司 | Novel on-load tap voltage regulating switch |
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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: 20091209 Termination date: 20130304 |