CN202772039U - Pressure-operated load switch for gas insulation ring-network cabinet - Google Patents
Pressure-operated load switch for gas insulation ring-network cabinet Download PDFInfo
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- CN202772039U CN202772039U CN 201220360872 CN201220360872U CN202772039U CN 202772039 U CN202772039 U CN 202772039U CN 201220360872 CN201220360872 CN 201220360872 CN 201220360872 U CN201220360872 U CN 201220360872U CN 202772039 U CN202772039 U CN 202772039U
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- contact
- load switch
- insulating cylinder
- network cabinet
- gas
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Abstract
The utility model discloses a pressure-operated load switch for a gas insulation ring-network cabinet, comprising a support, an upper support plate, a lower support plate, a support insulator, an insulating cylinder, a static contact, a nozzle, a moving contact, a pressure-operated sleeve, a conductive pipe, a contact seat, a main shaft, a crank arm system and a guide bar. A first high-voltage shielding case and a second high-voltage shielding case are arranged out of the insulating cylinder, and the internal structure of the insulating cylinder forms a load switch explosion chamber; the load switch explosion chamber is fixedly arranged on the support through the support insulator and the upper support plate; the guide bar is fixedly arranged on the support through the lower support plate and the support insulator; the static contact and the moving contact employ an integral structure of an arc ignition contact and a conductive contact; and the static contact is provided with an air vent. According to the utility model, the dimension is small, the contact system is simple, the breaking capacity is strong, the motion stability is high, and the usage life is long.
Description
Technical field
The utility model relates to a kind of pressure-operated load switch, particularly a kind of gas-insulated ring network cabinet pressure-operated load switch.
Background technology
The gas-insulated ring network cabinet is widely used in the mesohigh transmission and distribution networks, carries out the distribution of electric energy and the protection of circuit; On-load switch is the main element of gas-insulated ring network cabinet, is installed in the gas-insulated ring network cabinet, is used for closing closing short circuit current and disjunction load current, usually adopts the arc extinguishing structures such as air pressing type, metal deion grid formula; Pressure-operated load switch adopts the air pressing type principle, produces high velocity air in order to cooling and extinguish arcs by Compressed Gas, and this structure arc extinguishing ability is strong, has obtained more general application.
The dynamic and static contact of existing pressure-operated load switch put with insulating cylinder in, and be filled with the high pressure sulfur hexafluoride gas and insulate and arc extinguishing; Dynamic and static contact is provided with independently arcing contact and conductive contact, and moving contact links to each other with contact tube, and plenum chamber is arranged in the contact tube; Dynamic and static arcing contact separates generation electric arc when the on-load switch separating brake, the moving contact centre bore ejection of Compressed Gas from linking to each other with contact tube, cooling and extinguish arcs; This structure has certain connecting-disconnecting function and fracture insulation level.
The plenum chamber of existing pressure-operated load switch is located in the contact tube, and contact tube is because of the insulating cylinder spatial limitation, and size is thinner, so the amount of pressure of plenum chamber is not enough, and the arc extinguishing ability is restricted; Dynamic and static contact all is provided with arcing contact and conductive contact, makes contact system structure complicated, and product cost is higher; The on-load switch arc control device are sealed in the insulating cylinder, cut-off rear insulating gas and can't be upgraded, and significantly reduce useful life; On-load switch arc control device fracture non-uniform electric has greatly limited the insulation property of on-load switch, has affected on-load switch to the application and development of high voltage-rated grade more.
The utility model content
The technical problems to be solved in the utility model provides that a kind of physical dimension is little, contact system is simple, connecting-disconnecting function is strong, action stability is high, a kind of gas-insulated ring network cabinet pressure-operated load switch of long service life.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of gas-insulated ring network cabinet pressure-operated load switch comprises support and is installed on support interior upper backup pad, lower supporting plate, supporting insulator, insulating cylinder, fixed contact, nozzle, moving contact, the cover of calming the anger, contact tube, touch base, main shaft, connecting lever system, guide post; Described fixed contact and touch base are placed in the insulating cylinder two ends, described contact tube, the cover of calming the anger, nozzle and moving contact are placed in insulating cylinder inside, described insulating cylinder outside is provided with the first high-tension shielding cover and the second high-tension shielding cover, and described insulating cylinder internal structure consists of the on-load switch arc control device; The on-load switch arc control device are fixed on the support by supporting insulator and upper backup pad, and guide post is fixed on the support by lower supporting plate and supporting insulator, and main shaft and connecting lever system are fixedly installed in the support installing hole and can freely rotate; Nozzle is installed in to calm the anger and puts, and calm the anger cover and moving contact are installed on the contact tube, and contact tube bottom is connected with the connecting lever system activity, calms the anger to overlap and the rotation of moving contact by the connecting lever system moves up and down along guide post with contact tube; Fixed contact and moving contact adopt striking contact and conductive contact integrative-structure, and fixed contact is provided with air-vent.
Preferably, described insulating cylinder moulding by casting.
Preferably, described calming the anger is provided with fairlead between cover and the insulating cylinder.
Preferably, be provided with linear bearing between described contact tube and the guide post.
Preferably, be provided with spring touch finger and O RunddichtringO between described touch base and the contact tube.
Preferably, described touch base lower end is provided with the first anti-jump rubber.
Preferably, be provided with the second anti-jump rubber on the described lower supporting plate.
By technique scheme, the beneficial effects of the utility model are:
The utility model on-load switch arc control device are provided with insulating cylinder, insulating cylinder is except playing contact support and fracture insulating effect, also form the plenum chamber A that volume is larger with the cover of calming the anger, moving contact, contact tube, touch base etc., cover moves downwards fast with contact tube by calming the anger, compression A place sulfur hexafluoride gas, make the fast spout by calming the anger between cover and the moving contact of gas, blow to electric arc; This structure plenum chamber is pressed large-minded, and the air-flow spouting velocity is fast, so connecting-disconnecting function significantly improves.
The utility model is provided with the high-tension shielding cover at the insulating cylinder two ends, can make behind the separating brake between the moving contact and fixed contact Electric Field Distribution more even, can improve greatly the insulating capacity of fracture.
The utility model fixed contact, moving contact adopt striking contact and conductive contact integrative-structure, after fixed contact and the switch on of moving contact, conductive contact contacts with each other, finish conducting function, when fixed contact and moving contact separating brake, electric arc results between both striking contacts, and this structure has significantly been simplified contact system on the basis that guarantees electrical property.
The utility model on-load switch arc control device coat by insulating cylinder, fixed contact is provided with air-vent, electric arc was limited in the insulating cylinder when this structure both can guarantee to cut-off, avoid phase fault, sulfur hexafluoride gas after cut-offfing is entered by the discharge of the air-vent on fixed contact on-load switch arc control device and additional fresh sulfur hexafluoride gas, guaranteed the purity of on-load switch arc control device dielectrics, the useful life of significantly having improved on-load switch.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model structural representation;
Fig. 2 is the work schematic diagram (gate-dividing state) of the utility model embodiment;
Fig. 3 is the utility model structure right view;
Fig. 4 is the enlarged drawing of B among Fig. 2.
Numeral and the represented corresponding component title of letter among the figure:
1, upper backup pad 2, supporting insulator 3, the first high-tension shielding cover 4, insulating cylinder 5, the second high-tension shielding cover 6, fixed contact 7, nozzle 8, calm the anger and overlap 9, moving contact 10, contact tube 11, touch base 12, the first anti-jump rubber 13, main shaft 14, connecting lever system 15, guide post 16, the second anti-jump rubber 17, lower supporting plate 18, support 19, air-vent 20, fairlead 21, spring touch finger 22, O RunddichtringO 23, linear bearing
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Extremely shown in Figure 4 referring to Fig. 1, the utility model discloses a kind of gas-insulated ring network cabinet pressure-operated load switch, comprise support 18 and be installed on upper backup pad 1, lower supporting plate 17, supporting insulator 2, insulating cylinder 4, fixed contact 6, nozzle 7, the moving contact 9 in the support, calm the anger cover 8, fairlead 20, contact tube 10, touch base 11, spring touch finger 21, O RunddichtringO 22, linear bearing 23, main shaft 13, connecting lever system 14, guide post 15, the first high-tension shielding cover 3, the second high-tension shielding cover 5, the first anti-jump rubber 12 and the second anti-jump rubber 16.
Fixed contact 6 and touch base 11 are equipped with in insulating cylinder 4 two ends, and inside is provided with contact tube 10, calm the anger cover 8, nozzle 7 and moving contact 9, and the outside is provided with the first high-tension shielding cover 3 and the second high-tension shielding cover 5, and insulating cylinder 4 internal structures consist of the on-load switch arc control device.
The utility model on-load switch arc control device are fixed in support 18 by supporting insulator 2, upper backup pad 1, guide post 15 is fixed in support 18 by lower supporting plate 17 and supporting insulator 2, and main shaft 13 is fixedly installed in support 18 installing holes with connecting lever system 14 and can freely rotates; Wherein nozzle 7 is installed on the cover 8 of calming the anger, the cover 8 of calming the anger is installed on the contact tube 10 with moving contact 9, contact tube 10 bottoms and connecting lever system 14 is flexibly connected, and the rotation by connecting lever system 14 of calm the anger cover 8 and moving contact 9 moves up and down along guide post 15 with contact tube 10, realizes closing minute of dynamic and static contact; The utility model pressure-operated load switch is installed in the sulfur hexafluoride gas-insulating ring main unit gas tank, by insulation and the arc extinction performance of sulfur hexafluoride gas excellence, realizes the normal operation of on-load switch.
The utility model on-load switch arc control device outside is provided with insulating cylinder 4, insulating cylinder 4 is except playing contact support and fracture insulating effect, also form the plenum chamber A that volume is larger with calm the anger cover 8, moving contact 9, contact tube 10, touch base 11 etc., cover 8 moves downwards fast with contact tube 10 by calming the anger, compression A place sulfur hexafluoride gas, make the fast spout 7 by calming the anger between cover 8 and the moving contact 9 of gas, blow to electric arc; This structure plenum chamber is pressed large-minded, and the air-flow spouting velocity is fast, so connecting-disconnecting function significantly improves.
Insulating cylinder 4 moulding by casting, calming the anger is provided with fairlead 20 between cover 8 and the insulating cylinder 4, is provided with linear bearing 23 between contact tube 10 and the guide post 15, has guaranteed the concentricity of fixed contact 6 with moving contact 9.
Insulating cylinder 4 two ends are provided with the first high-tension shielding cover 3 and the second high-tension shielding cover 5, the first high-tension shielding covers 3 and the second high-tension shielding cover 5 can make behind the separating brake between the moving contact 9 and fixed contact 6 Electric Field Distribution more even, can improve greatly the insulating capacity of fracture.
The utility model on-load switch arc control device coat by insulating cylinder 4, fixed contact 6 is provided with air-vent 19, electric arc was limited in the insulating cylinder 4 when air-vent 19 both can guarantee to cut-off, avoid phase fault, sulfur hexafluoride gas after cut-offfing is entered by air-vent 19 discharge on-load switch arc control device and additional fresh sulfur hexafluoride gas on the fixed contact 6, guaranteed the purity of on-load switch arc control device dielectrics, the useful life of significantly having improved on-load switch;
Except being provided with spring touch finger, also be provided with the O RunddichtringO between touch base 11 and the contact tube 10, guaranteed to electrically contact reliably the sealing with the plenum chamber bottom.
Connecting lever system 14 is insulating part, and main shaft 13 is metalwork, makes the utility model on-load switch connecting lever system alternate with solid insulation, has avoided connecting lever system 14 alternate larger leakage currents, has improved the stability of high load capacity switch operation.
Fixed contact 6, moving contact 9 adopt striking contact and conductive contact integrative-structure, after fixed contact 6 closes a floodgate with moving contact 9, conductive contact contacts with each other, finish conducting function, when fixed contact 6 and moving contact 9 separating brake, electric arc results between both striking contacts, and this structure has significantly been simplified contact system on the basis that guarantees electrical property.
Touch base 11 lower ends are provided with the first anti-jump rubber 12, and lower supporting plate 17 upper ends are provided with the second anti-jump rubber 16; Close, during sub-switching operation, absorb contact tubes 10 remaining energy by the first anti-jump rubber 12 and the second anti-jump rubber 16, thereby reduced closing process and separating brake resilience, make this pressure-operated load switch mechanical property optimization.
First, second high-tension shielding circle of the utility model is used for optimizing on-load switch arc control device Electric Field Distribution, reduce the electric field strength at dynamic and static contact place, as cancel above-mentioned design, but still adopt pressure-operated load switch arc quenching chamber structure of the present utility model, still have and be not higher than insulation property of the present utility model; In like manner, the first high-tension shielding circle 3, the second high-tension shielding circle 5 adopt the metallic conduction material to make, and also can obtain higher insulation property; Therefore protection of the present utility model should include but not limited to technical characterictic of the present utility model.
Above demonstration 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 above-described embodiment 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, and 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 (7)
1. gas-insulated ring network cabinet pressure-operated load switch, it is characterized in that, comprise support and be installed on support interior upper backup pad, lower supporting plate, supporting insulator, insulating cylinder, fixed contact, nozzle, moving contact, the cover of calming the anger, contact tube, touch base, main shaft, connecting lever system, guide post; Described fixed contact and touch base are placed in the insulating cylinder two ends, described contact tube, the cover of calming the anger, nozzle and moving contact are placed in insulating cylinder inside, described insulating cylinder outside is provided with the first high-tension shielding cover and the second high-tension shielding cover, and described insulating cylinder internal structure consists of the on-load switch arc control device; The on-load switch arc control device are fixed on the support by supporting insulator and upper backup pad, and guide post is fixed on the support by lower supporting plate and supporting insulator, and main shaft and connecting lever system are fixedly installed in the support installing hole and can freely rotate; Nozzle is installed in to calm the anger and puts, and calm the anger cover and moving contact are installed on the contact tube, and contact tube bottom is connected with the connecting lever system activity, calms the anger to overlap and the rotation of moving contact by the connecting lever system moves up and down along guide post with contact tube; Fixed contact and moving contact adopt striking contact and conductive contact integrative-structure, and fixed contact is provided with air-vent.
2. a kind of gas-insulated ring network cabinet pressure-operated load switch according to claim 1 is characterized in that: described insulating cylinder moulding by casting.
3. a kind of gas-insulated ring network cabinet pressure-operated load switch according to claim 1 is characterized in that: described calming the anger is provided with fairlead between cover and the insulating cylinder.
4. a kind of gas-insulated ring network cabinet pressure-operated load switch according to claim 1 is characterized in that: be provided with linear bearing between described contact tube and the guide post.
5. a kind of gas-insulated ring network cabinet pressure-operated load switch according to claim 1 is characterized in that: be provided with spring touch finger and O RunddichtringO between described touch base and the contact tube.
6. a kind of gas-insulated ring network cabinet pressure-operated load switch according to claim 1, it is characterized in that: described touch base lower end is provided with the first anti-jump rubber.
7. a kind of gas-insulated ring network cabinet pressure-operated load switch according to claim 1 is characterized in that: be provided with the second anti-jump rubber on the described lower supporting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360872 CN202772039U (en) | 2012-07-24 | 2012-07-24 | Pressure-operated load switch for gas insulation ring-network cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220360872 CN202772039U (en) | 2012-07-24 | 2012-07-24 | Pressure-operated load switch for gas insulation ring-network cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202772039U true CN202772039U (en) | 2013-03-06 |
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ID=47778592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220360872 Expired - Fee Related CN202772039U (en) | 2012-07-24 | 2012-07-24 | Pressure-operated load switch for gas insulation ring-network cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202772039U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760607A (en) * | 2012-07-24 | 2012-10-31 | 上海天灵开关厂有限公司 | Pressure-operated load switch for gas-insulated ring main unit |
| CN103646820A (en) * | 2013-12-13 | 2014-03-19 | 上海灏赛电器有限公司 | High-voltage directly-operated air-compressing type SF6 load switch device |
| CN107240519A (en) * | 2017-08-01 | 2017-10-10 | 青岛特锐德电气股份有限公司 | A kind of tri-station isolating switch |
-
2012
- 2012-07-24 CN CN 201220360872 patent/CN202772039U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760607A (en) * | 2012-07-24 | 2012-10-31 | 上海天灵开关厂有限公司 | Pressure-operated load switch for gas-insulated ring main unit |
| CN102760607B (en) * | 2012-07-24 | 2014-10-29 | 上海天灵开关厂有限公司 | Pressure-operated load switch for gas-insulated ring main unit |
| CN103646820A (en) * | 2013-12-13 | 2014-03-19 | 上海灏赛电器有限公司 | High-voltage directly-operated air-compressing type SF6 load switch device |
| CN107240519A (en) * | 2017-08-01 | 2017-10-10 | 青岛特锐德电气股份有限公司 | A kind of tri-station isolating switch |
| CN107240519B (en) * | 2017-08-01 | 2019-05-21 | 青岛特锐德电气股份有限公司 | A kind of tri-station isolating switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20150724 |
|
| EXPY | Termination of patent right or utility model |