CN109545507A - A kind of inflatable on-load tap-changer of transformer - Google Patents
A kind of inflatable on-load tap-changer of transformer Download PDFInfo
- Publication number
- CN109545507A CN109545507A CN201910031527.3A CN201910031527A CN109545507A CN 109545507 A CN109545507 A CN 109545507A CN 201910031527 A CN201910031527 A CN 201910031527A CN 109545507 A CN109545507 A CN 109545507A
- Authority
- CN
- China
- Prior art keywords
- driving mechanism
- insulating cylinder
- changer
- inflatable
- lubricant
- 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.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
-
- 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
- H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a kind of inflatable on-loads tap-changer of transformer, comprising: insulating cylinder, fixed contact, main shaft, driving mechanism, lubricant, upper cover, switching contact, transition resistance, transition contact, lower cover, plenum space, driving mechanism shell；The present invention makes full use of sulfur hexafluoride (SF6) gas to have incombustibility, good insulation performance and arc extinction performance, is had the following characteristics that using on-load voltage regulating switch produced by the invention and is not easy to catch fire, highly-safe；Service life and time between overhauls(TBO) are long；Occupied area is small, installation is easy to operate；Function admirable, it is reliable for operation.
Description
Technical field
The present invention relates to power system transformer accessories manufacturing technical field, especially providing a kind of inflatable transformer has load
Tap changer, it is suitable for oil-immersed transformer and dry-type transformer.
Background technique
Currently, the on-load regulator transformer of all on-load adjustment voltage of electric system, all adapted on-load voltage regulating switch.
There are two types of broad forms for currently used on-load voltage regulating switch:
One is transformer insulation oil is filled, transformer insulated oil-insulation, arc extinguishing, heat dissipation are utilized.Its advantage is that structure it is simple,
It is reliable for operation.This on-load voltage regulating switch is traditional structure, is still largely being used so far.Its disadvantage is transformer insulated
The gas (such as hydrogen, acetylene, methane) and free carbon generated when oil blast, so that under the dielectric strength of transformer insulation oil
Drop, thus must running check, change oil, maintenance workload is bigger, now some manufactory's adapted on-line oil filters, still not
Maintenance workload can be reduced.There are one biggish for this on-load voltage regulating switch the disadvantage is that cannot be used for fire-proof and explosion-proof occasion,
Such as the workplace that dry-type transformer is applicable in.
Another kind is the vacuum on-load voltage regulating switch using vacuum switch tube arc extinguishing, and which solve use insulating oil arc-extinguishing to make
At insulating oil pollution problem, but its structure is complex, and reliability is poor.When vacuum switch tube works normally, vacuum switch is utilized
Pipe is powered, and vacuum switch tube is easy to damage, and its insulation still uses transformer insulation oil, is not suitable for dry-type transformer still.
Summary of the invention
The present invention is to use sulfur hexafluoride (SF6) gas instead in the oil-filled on-load voltage regulating switch structure basis of tradition to make filling Jie
Matter, arc extinguishing ability are better than transformer insulation oil, and arc extinguishing generation does not influence its dielectric strength, and improve has load to greatest extent
The reliability of tap changer work, while reducing the maintenance workload of on-load voltage regulating switch, the danger do not caught fire and exploded,
Also nontoxic.It is not only applicable to oil-immersed type transformer, is more suitable for dry-type transformer.The present invention solves oil-filled on-load voltage regulating switch
For dry-type transformer there are the problem of, while the more existing vacuum tube arc extinguishing on-load voltage regulating switch body for dry-type transformer
Product greatly reduces, easy for installation, cheap.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of inflatable on-load tap-changer of transformer, comprising: insulating cylinder 1, fixed contact 2, main shaft 3, driving mechanism 4,
Lubricant 5, upper cover 6, switching contact 7, transition resistance 8, transition contact 9, lower cover 10, plenum space 11, driving mechanism shell 12；
1 lower part of insulating cylinder and lower cover 10 are tightly connected, and 1 top of insulating cylinder and the sealing of driving mechanism shell 12 connect
It connects, 12 top of driving mechanism shell is connect with upper cover 6 by flange seal；Pass through sealant on 1 barrel of insulating cylinder
Sealing is fixed with fixed contact 2, and 2 surface of fixed contact is coated with lubricant 5；The main shaft 3 is set to inside insulating cylinder 1, institute
3 bottom of main shaft is stated to be slidably connected on lower cover 10 by bearing, be fixed on the main shaft 3 switching contact 7, transition contact 9 and
Transition resistance 8,3 top of main shaft connect driving mechanism 4, and the driving mechanism 4 is set to inside driving mechanism shell 12；It is described
Plenum space 11, the inflation are formed inside the seal casinghousing that upper cover 6, driving mechanism shell 12, insulating cylinder 1 and lower cover 10 are constituted
Space 11 is filled with sulfur hexafluoride gas.
Preferably, the upper cover 6 is hemispherical dome structure.
Preferably, the fixed contact 2 is that both ends stud with copper-tungsten, the intermediate slab organization for being provided with lubricant tank 2a.
Preferably, the lubricant 5 is graphitic lubricant.
Preferably, the lower cover 10 is aluminium material cover board.
The present invention has following beneficial effect:
The present invention makes full use of sulfur hexafluoride (SF6) gas to have incombustibility, good insulation performance and arc extinction performance,
It is had the following characteristics that using on-load voltage regulating switch produced by the invention and is not easy to catch fire, it is highly-safe；Service life and time between overhauls(TBO)
It is long；Occupied area is small, installation is easy to operate；Function admirable, it is reliable for operation.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram that fixed contact applies lubricant in the present invention；
In figure: 1, insulating cylinder；2, fixed contact；2a, lubricant tank；3, main shaft；4, driving mechanism；5, lubricant；6, on
Lid；7, switching contact；8, transition resistance；9, transition contact；10, lower cover；11, plenum space；12, driving mechanism shell.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, 2, a kind of inflatable on-load tap-changer of transformer, comprising: insulating cylinder 1, fixed contact 2, main shaft
3, driving mechanism 4, lubricant 5, upper cover 6, switching contact 7, transition resistance 8, transition contact 9, lower cover 10, plenum space 11, drive
Dynamic mechanism shell 12.
1 lower part of insulating cylinder and lower cover 10 are tightly connected, and 1 top of insulating cylinder and driving mechanism shell 12 are tightly connected, driving
12 top of mechanism shell is connect with upper cover 6 by flange seal；Fixed touching is fixed with by sealant sealing on 1 barrel of insulating cylinder
First 2,2 surface of fixed contact is coated with lubricant 5；Main shaft 3 is set to inside insulating cylinder 1, and 3 bottom of main shaft is slidably connected at by bearing
On lower cover 10, switching contact 7, transition contact 9 and transition resistance 8 are fixed on main shaft 3,3 top of main shaft connects driving mechanism 4,
Driving mechanism 4 is set to inside driving mechanism shell 12；Upper cover 6, driving mechanism shell 12, insulating cylinder 1 and lower cover 10 are constituted close
It seals enclosure interior and forms plenum space 11, plenum space 11 is filled with sulfur hexafluoride gas, and this gas is stablized nontoxic, has very high
Arc extinction performance and good insulating properties, all used in most high-voltage switch gears and combined electrical apparatus at present this gas as
Arc extinguishing and dielectric.
Wherein: upper cover 6 is hemispherical dome structure；Fixed contact 2 is that both ends stud with copper-tungsten, centre is provided with lubricant tank 2a
Slab organization, the moving contact to work in gas and fixed contact that this structure makes from abrasion, from the corrosion of electric arc；
Lubricant 5 is graphitic lubricant, and lubricant effect is extremely strong, and is had conductive and the characteristics of do not generate waste residue；Lower cover 10 is aluminium material
Cover board.
It is full of sulfur hexafluoride (SF6) gas of certain pressure intensity inside on-load voltage regulating switch of the present invention, is used for arc extinguishing and insulation；
Be coated between insulating cylinder 1 and fixed contact 2 sealant (sealant be not with transformer insulation oil, not with sulfur hexafluoride (SF6) gas
The adhesive sticker of body generation aging reaction), to reinforce sealing effect；Graphite lubrication is coated between switching contact 7 and fixed contact 2
Agent to avoid dry wear between contact, while guaranteeing conductive effect again.
Upper cover 6 and driving mechanism shell 12, driving mechanism shell 12 and insulating cylinder 1, fixed contact 2 and insulating cylinder 1, lower cover
10 with insulating cylinder 1, must take measures to guarantee good seal between these components, to guarantee switch internal sulfur hexafluoride (SF6)
The pressure of gas is constant within the period of permission.
The present invention is suitable for the combined type on-load voltage regulating switch or combined type on-load voltage regulating switch switch of current filling type
Partial transformation is directly changed to the on-load voltage regulating switch of oil-filled medium the on-load voltage regulating switch of inflation (SF6) medium.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of inflatable on-load tap-changer of transformer characterized by comprising insulating cylinder (1), fixed contact (2), main shaft
(3), driving mechanism (4), lubricant (5), upper cover (6), switching contact (7), transition resistance (8), transition contact (9), lower cover
(10), plenum space (11), driving mechanism shell (12)；
Insulating cylinder (1) lower part and lower cover (10) are tightly connected, and insulating cylinder (1) top and driving mechanism shell (12) are close
Envelope connection, driving mechanism shell (12) top is connect with upper cover (6) by flange seal；On insulating cylinder (1) barrel
It is fixed with fixed contact (2) by sealant sealing, fixed contact (2) surface is coated with lubricant (5)；The main shaft (3)
Internal set on insulating cylinder (1), main shaft (3) bottom is slidably connected on lower cover (10) by bearing, solid on the main shaft (3)
Surely there are switching contact (7), transition contact (9) and transition resistance (8), main shaft (3) top connects driving mechanism (4), described
It is internal that driving mechanism (4) is set to driving mechanism shell (12)；The upper cover (6), driving mechanism shell (12), insulating cylinder (1) and
Plenum space (11) are formed inside the seal casinghousing that lower cover (10) is constituted, the plenum space (11) is filled with sulfur hexafluoride gas
Body.
2. a kind of inflatable on-load tap-changer of transformer described in accordance with the claim 1, which is characterized in that the upper cover (6)
For hemispherical dome structure.
3. a kind of inflatable on-load tap-changer of transformer described in accordance with the claim 1, which is characterized in that the fixed contact
(2) copper-tungsten is studded with for both ends, centre is provided with the slab organization of lubricant tank (2a).
4. a kind of inflatable on-load tap-changer of transformer described in accordance with the claim 1, which is characterized in that the lubricant
It (5) is graphitic lubricant.
5. a kind of inflatable on-load tap-changer of transformer described in accordance with the claim 1, which is characterized in that the lower cover (10)
For aluminium material cover board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031527.3A CN109545507A (en) | 2019-01-14 | 2019-01-14 | A kind of inflatable on-load tap-changer of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910031527.3A CN109545507A (en) | 2019-01-14 | 2019-01-14 | A kind of inflatable on-load tap-changer of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109545507A true CN109545507A (en) | 2019-03-29 |
Family
ID=65835346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910031527.3A Withdrawn CN109545507A (en) | 2019-01-14 | 2019-01-14 | A kind of inflatable on-load tap-changer of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109545507A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346707A (en) * | 1986-08-15 | 1988-02-27 | Toshiba Corp | Gas insulation on-load tap changer |
| CN2082453U (en) * | 1990-12-28 | 1991-08-07 | 马延绪 | Compound type branch switch of air load |
| US5153399A (en) * | 1990-11-06 | 1992-10-06 | G&W Electric Company | Rotary puffer switch |
| CN101090034A (en) * | 2007-05-14 | 2007-12-19 | 邵长青 | Load capacity and pressure regulating switch for transformer |
| CN209843428U (en) * | 2019-01-14 | 2019-12-24 | 张宏强 | Inflatable transformer on-load voltage regulation switch |
-
2019
- 2019-01-14 CN CN201910031527.3A patent/CN109545507A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6346707A (en) * | 1986-08-15 | 1988-02-27 | Toshiba Corp | Gas insulation on-load tap changer |
| US5153399A (en) * | 1990-11-06 | 1992-10-06 | G&W Electric Company | Rotary puffer switch |
| CN2082453U (en) * | 1990-12-28 | 1991-08-07 | 马延绪 | Compound type branch switch of air load |
| CN101090034A (en) * | 2007-05-14 | 2007-12-19 | 邵长青 | Load capacity and pressure regulating switch for transformer |
| CN209843428U (en) * | 2019-01-14 | 2019-12-24 | 张宏强 | Inflatable transformer on-load voltage regulation switch |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190329 |
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| WW01 | Invention patent application withdrawn after publication |