CN204242925U - Switching device and arc control device, tank body - Google Patents
Switching device and arc control device, tank body Download PDFInfo
- Publication number
- CN204242925U CN204242925U CN201420642830.XU CN201420642830U CN204242925U CN 204242925 U CN204242925 U CN 204242925U CN 201420642830 U CN201420642830 U CN 201420642830U CN 204242925 U CN204242925 U CN 204242925U
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- tank body
- insulation cover
- solid insulation
- internal face
- face
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Abstract
The utility model discloses a kind of switching device and arc control device, tank body.In arc control device, the outside wall surface of solid insulation cover coordinates with the internal face of tank body body and realizes locating, be in solid insulation cover to make connecing electric main body, and solid insulation cover is by between the internal face of give vent to anger position and tank body body being located at blowout side, and the internal face of solid insulation cover is for stopping the baffling-face that the insulating gas that blowout side spray goes out makes the insulating gas baffling of ejection commutate.In use, the insulating gas that the spout of driven power connection end ejects is to after the high-voltage arc arc extinguishing in fracture, go out from the blowout side spray connect electric main body, now not only flow velocity and temperature are still higher for insulating gas, and some metallic dusts and ionization analyte will be mingled with, now the mist of high temperature and high speed will collide on the baffling-face of fixed solid insulating case, thus avoids the mist gone out from blowout side spray to the impact erosion of the internal face of tank body body.
Description
Technical field
The utility model relates to a kind of switching device and arc control device, tank body.
Background technology
At present, in switchgear, customary insulation mode is divided into gas-insulated and fixed insulation, gas isolated mode is filled with sulfur hexafluoride gas, nitrogen etc. in arc control device, the mode of solid insulation is in arc control device, arrange polytetrafluoroethylene, electroporcelain material, glass fabric, resin material etc., and in the insulation against ground of metal enclosed switchgear, generally adopt gas isolated mode, its advantage is that the form of gas is not fixed, especially adopt the switchgear of air blowing arc extinguishing, gas-insulated plays the effect of arc extinguishing especially.But no matter gas-insulated adopts sulfur hexafluoride gas or nitrogen, its dielectric strength is all lower than the fixed insulation material in fixed insulation, and the variable effect of temperature, pressure, element ablation in the tank body that the insulation property of insulating gas can be subject to metal enclosed switchgear, cause metal enclosed switchgear under equal electric pressure, adopt gas isolated tank body larger than adopting the tank body external diameter of open type switchgear.
When metal enclosed switchgear carries out cut-offfing action, insulating gas is spurted to quiet power connection end from the dynamic power connection end of arc control device, the electric arc that insulating gas will be blown out between static arc contact and moving arcing contact, and the cooling duct flowed through in fixed contact pedestal---air side of the open type on fixed contact pedestal periphery or flow through the surface of the static arc contact---air side of the open type on static arc contact periphery, the internal face injecting directly on tank body carries out baffling.But because of dynamic, between static connection end, high-temperature electric arc can heat insulating gas, make the pressure increase of insulating gas, insulating capacity declines, and the dynamic power connection end of arc control device utilizes mechanical system manufacture pressure differential or utilize arc control device pressure itself difference to carry out arc extinguishing, the quiet power connection end simultaneously high-temperature insulation gas being blowed to arc control device cools, so in the gas-cooled process of high-temperature insulation, the element of the quiet power connection end of gas meeting ablation arc control device, to produce a certain amount of metallic dust and ionization analyte in the gas channel of quiet power connection end, the insulating gas of this part dust Sum decomposition thing and not thoroughly cooling will directly be jetted on the internal face of tank body from the air side on quiet power connection end, the dust Sum decomposition thing be mixed in insulating gas can burn and corrode the tank skin of tank body, so that the internal face of tank body is uneven, heavy then arc control device will be caused to puncture over the ground or discharge, so Cubicle Gas-Insulated Switchgear needs to reduce insulating gas temperature by extending the quiet end gas channel of arc control device usually.
But gas channel to be extended in limited space, deflection plate can only be increased in cooling duct in the quiet power connection end of arc control device, the effect of deflection plate is also limited, when the tank body internal diameter of Cubicle Gas-Insulated Switchgear narrows down to a certain degree, insulation against ground will become very responsive, as long as there is the reduction of some insulation property, will cause discharging over the ground or puncturing, now have no baffle plate will affect not quite the insulation property of whole arc control device.
And along with the progress of society, the continuous increase of the density of population, the requirement of modern society to the utilance in space also improves thereupon, so that the demand that market reduces the overall dimension of metal enclosed switchgear is more and more higher, as in electrical network requirement of invitation for bid, the width of 252kV three-phase phase-splitting metal enclosed switchgear is down to 1500mm from initial 2300mm, it is such as the circuit breaker of dielectric with sulfur hexafluoride gas, if the diameter itself of arc control device does not reduce, the tank diameter of metal enclosed switchgear has dropped to a limit, if reduce tank diameter further, only have and increase insulating gas pressure in tank body, but this method not only wastes gas, but also have impact to the safety of metal enclosed switchgear, improve design pressure after all, not only material cost will be increased, but also need more high-grade authentication of professional qualification.
Utility model content
The purpose of this utility model is to provide a kind of tank body avoiding internal face to be impacted the high-voltage switch gear arc control device of burning by the insulating gas of high temperature, additionally provides a kind ofly use the arc control device of this tank body and use the switching device of these arc control device simultaneously.
In order to realize above object, in the utility model, the technical scheme of tank body is as follows:
Tank body, comprise the tank body body connecing the pipe box shape of electric main body be relatively assembled for holding dynamic and static power connection end, be equipped with for every being located at the solid insulation cover between outer peripheral face and the internal face of tank body body connecing electric main body in tank body body, the internal face of solid insulation cover is prevent the insulating gas that and the baffling-face of baffling commutation for intercepting from the blowout side spray connecing electric main body, and the outside wall surface of solid insulation cover is the fitting surface coordinated with the internal face of tank body body.
The thermal endurance class of the inwall of solid insulation cover is not less than C level.
Solid insulation cover is set with by least two points of bodies and forms, and in each point of body, the class of insulation of at least two is different.
In each point of body, the adjacent wall swelling of adjacent two coordinates, and the outer peripheral face swelling of outermost point of body or adhesive asserably are on the internal face of tank body body.
The jacket wall of each point of body offers the seam extended vertically, the ring end face at the two ends of seam through point of body.
The internal face of tank body body is convexly equipped with the limited step of block at solid insulation cover two ends.
In the utility model, the technical scheme of arc control device is as follows:
Arc control device, comprise tank body, the tank body body of tank body is pipe box shape, be provided with in tank body body by moving, what quiet power connection end was assembled relatively connects electric main body, the periphery connecing electric main body is provided with and blows to the open type of the internal face of tank body body or the blowout side of open type for the insulating gas after arc extinguishing, be equipped with every being located at the solid insulation cover between outer peripheral face and the internal face of tank body body connecing electric main body in tank body body, the internal face of solid insulation cover is prevent the insulating gas that and the baffling-face of baffling commutation for intercepting from blowout side spray, the outside wall surface of solid insulation cover is the fitting surface coordinated with the internal face of tank body body.
The two ends of solid insulation cover are stretched out from the two ends connecing electric main body.
Solid insulation cover is set with by least two points of bodies and forms, and in each point of body, the class of insulation of at least two is different.
The technical scheme of the utility model breaker in middle device is as follows:
Switching device, comprise the operating mechanism of arc control device and upper driving connection thereof, arc control device comprise tank body, the tank body body of tank body is pipe box shape, be provided with in tank body body by moving, what quiet power connection end was assembled relatively connects electric main body, the periphery connecing electric main body is provided with and blows to the open type of the internal face of tank body body or the blowout side of open type for the insulating gas after arc extinguishing, be equipped with every being located at the solid insulation cover between outer peripheral face and the internal face of tank body body connecing electric main body in tank body body, the internal face of solid insulation cover is prevent the insulating gas that and the baffling-face of baffling commutation for intercepting from blowout side spray, the outside wall surface of solid insulation cover is the fitting surface coordinated with the internal face of tank body body.
In the utility model, the outside wall surface of solid insulation cover coordinates with the internal face of tank body body and realizes locating, be in solid insulation cover to make connecing electric main body, and solid insulation cover is by between the internal face of give vent to anger position and tank body body being located at blowout side, and the internal face of solid insulation cover is for stopping the baffling-face that the insulating gas that blowout side spray goes out makes the insulating gas baffling of ejection commutate.In use, the insulating gas that the spout of driven power connection end ejects is to after the high-voltage arc arc extinguishing in fracture, go out from the blowout side spray connect electric main body, now not only flow velocity and temperature are still higher for insulating gas, and some metallic dusts and ionization analyte will be mingled with, now the mist of high temperature and high speed will collide on the baffling-face of fixed solid insulating case, this baffling-face will play the effect of containment by the mist powerful to wind-force, to make the energy of mist be released by collision effect, thus avoid the mist gone out from blowout side spray to the impact erosion of the internal face of tank body body.Simultaneously, solid insulation overlaps the dielectric strength not only can strengthened in arc control device, and when the baffling-face of the continuous colliding solid insulating case of mist, even if baffling-face becomes uneven, also the electric field at residing position can be made to keep stable because the internal face of tank body body keeps complete, thus avoid and connect electric main body and occur in blowout side the problem that the tank skin of the tank body body caused by electric field change is breakdown.
Further, solid insulation cover is set with by least two points of bodies and forms, and in each point of body, the class of insulation of at least two is different, thus utilizes dielectric difference of unlike material to improve the electric field connecing electric main body periphery to manufacture electric capacity.
Accompanying drawing explanation
Fig. 1 is the structural representation of arc control device in the embodiment of switching device of the present utility model.
Embodiment
The embodiment of the utility model breaker in middle device: as shown in Figure 1, this switching device is a kind of primary cut-out, comprise the operating mechanism of arc control device and upper driving connection thereof, the structure of operating mechanism belongs to prior art, and arc control device are formed primarily of tank body, dynamic power connection end 2 and quiet power connection end 4.Tank body is again overlap 5 by tank body body 3 and solid insulation to form, tank body body 3 is the pipe box body extended in left-right direction, the coaxial setting that dynamic power connection end 2 is relative with quiet power connection end 4 left and right in tank body body 3 and form that left and right extends connect electric main body, and offer the blowout side 6 of downward opening outlet type in the position, bottom side of the outside wall surface of quiet power connection end 4.Solid insulation cover 5 be sleeved on connect electric main body periphery on, the two ends of solid insulation cover 5 are stretched out from the two ends connecing electricity, the internal face of solid insulation cover 5 is baffling-face, together with the outside wall surface of solid insulation cover 5 is adhesively fixed with the internal face matched in clearance of tank body body 3 and by side face tack coat 7 between the two.
The two ends, left and right of solid insulation cover 5 are stretched out from the left and right sides of quiet power connection end 4.Solid insulation cover 5 is formed by multiple points of body coaxial packages, each point of cover body length is consistent, and the material difference of each point of body is (as adopted epoxide resin material, sulphurated siliastic material, polytetrafluoroethylmaterial material, ceramic material etc.), namely each point of body has the different classes of insulation, so just can utilize the dielectric corresponding to unlike material of point body, several electric capacity is formed between the tank skin and the outer peripheral face of quiet power connection end 4 of tank body body 3, to improve the electric field between tank body body and quiet power connection end, but a point body for innermost layer must adopt thermal endurance class to be not less than the polytetrafluoroethylmaterial material of C level, namely the inwall making solid insulation overlap 5 is the resistance to ablation layer of insulation that thermal endurance class is not less than C level.In solid insulation cover 5, the mutual swelling of adjacent wall of adjacent two points of bodies coordinates, and on the jacket wall of each point of body, offer the seam 10 of the C shape extended vertically, the ring end face at the two ends of seam 10 through points of bodies, like this when carrying out the assembling of solid insulation cover, each point of body loads in tank body body 3 according to order from outside to inside successively, and when point body assembles, first the docking wall of seam 10 both sides can be staggered, after between two flange-interfaces that point body enters tank body body completely, again the docking wall of seam 10 both sides of point body is docking together, the swelling of score body is assemblied on corresponding internal face.
The two-port of tank body body 3 is respectively arranged with inner flange 8, inner flange 8 forms protruding spacing ring on the internal face of tank body body, this spacing ring block is at the endface position place, two ends of solid insulation cover 5, overlap 5 to stop solid insulation to deviate from from the two ends of tank body body 3, and inner flange makes the port of tank body body 3 be spacing reducing.Tank body body 3 is metal can body 3, the top of tank body body 3 is provided with the moved end wire hole that connects dynamic power connection end 2 respectively and is connected quiet the quiet of power connection end 4 and brings out string holes, moved end wire hole and the quiet Flange joint respectively that to bring out in string holes have insulating basin 1, and the perforation that the wiring construction for quiet terminals 4 passes is offered at the top of solid insulation cover 5, the aperture of this perforation is consistent with the quiet aperture bringing out string holes.
Solid insulation cover 5 is except employing polytetrafluoroethylene material, also the high temperature insulating materials such as ceramic material can be adopted, this type of material is after running into high-temperature hot air-flow, insulation property can not be reduced because of the change of temperature, and solid insulation cover 5 also can be that multi-layer material is composited, its objective is the electric field utilizing dielectric difference of unlike material to improve quiet power connection end 4 periphery to manufacture electric capacity, but the baffling-face of solid insulation cover 5 must be high-temperature insulation material, and namely residing for baffling-face, the thermal endurance class of layer is not less than C level.The situation that insulation property reduce can be there is in the insulating gas of quiet power connection end 4 periphery in high-temperature electric arc heating, and the baffling-face of solid insulation cover 5 covers the side-lower of giving vent to anger of quiet power connection end 4, to make the thermal current of discharging from quiet power connection end 4 stop by the baffling-face of solid insulation cover 5, the high-temperature insulation gas being mingled with metallic dust and ionization analyte is avoided to inject directly on the internal face of tank body body 3.Set solid insulation cover 5 thickness time, due to solid insulation cover 5 dielectric strength depend on its material and thickness, for this reason ad hoc determine following steps to calculate solid insulation overlap 5 thickness:
Account form one: 1, according to insulating gas under the impact of thermal current, losing insulating capacity is completely basis;
2, by calculating or test method, know that arc control device are not before installing solid insulation cover 5 additional, arc control device are by the minimum insulation distance of thunder and lightning and power frequency insulating test over the ground;
3, according to the minimum insulation distance in step 2, calculate the thickness of the solid insulation cover 5 needed in tank body body 3, but because the dielectric strength of solid insulation material is different, so in foundation step 2, the thickness of the solid insulation cover 5 that insulation distance calculates can change along with the difference of material.
Account form two: 1, by calculate or test method, know arc control device do not install additional insulation resistance to ablation layer before, arc control device are by the insulation distance of type approval test;
2, according to minimum insulation distance in step 1, the minimum insulation distance with not installing the resistance to ablation layer that insulate in mode one additional, compares, and calculates the thickness of the solid insulation cover 5 needed in circuit breaker.
Therefore pass-through mode two can reduce the diameter of tank body body 3 to greatest extent.
Because all solids insulating material is different according to production technology, also great changes have taken place for self dielectric strength, so the present embodiment only specifies the referential data of some conventional solid insulating material, suppose, the dielectric strength of sulphur hexafluoride is 1, according to calculation and test, the dielectric strength of epoxy resin is 4-6, the dielectric strength of sulphurated siliastic is 3-4, and the dielectric strength of polytetrafluoro is 2-3, and the dielectric strength of porcelain insulating material is 5-7.
When assembling these arc control device, solid insulation can be overlapped 5 any one can load from the two-port of tank body body 3, and by applying adhesive linkage 7 on the internal face of tank body body 3, solid insulation cover 5 is fixed on assigned address, after solid insulation cover 5 assembles, again dynamic power connection end 2 and quiet power connection end 4 are assemblied in tank body body 3, and realize the encapsulation of arc control device by end cap 9 and insulated terminal.
In the above-described embodiments, solid insulation cover is adhesively fixed on the internal face of tank body body by adhesive linkage, in other embodiments, solid insulation cover also can directly swelling be assemblied on the internal face of tank body body, i.e. the outside wall surface of solid insulation cover and the internal face interference fit of tank body body.
In the above-described embodiments, the blowout side on quiet power connection end is the aperture being in its position, bottom side, and in other are implemented, this blowout side also can be the opening etc. of the notch form that the periphery open spaces of fixed contact or quiet power connection end are offered.
In the above-described embodiments, at tank body body two ends by inner flange block solid insulation cover, in other embodiments, the limited step of spacing ring type that this inner flange is formed on the internal face of tank body body also can be replaced by the limited step of the form such as projection shape, semi-circular of projection on the internal face of tank body body.
The embodiment of arc control device in the utility model: in the present embodiment, the structure of arc control device is identical with the structure of arc control device in above-mentioned enforcement, therefore repeats no more.
The embodiment of tank body in the utility model: in the present embodiment, the structure of tank body is identical with the structure of tank body in above-described embodiment, therefore repeats no more.
Claims (10)
1. tank body, comprise the tank body body connecing the pipe box shape of electric main body be relatively assembled for holding dynamic and static power connection end, it is characterized in that, be equipped with for every being located at the solid insulation cover between outer peripheral face and the internal face of tank body body connecing electric main body in tank body body, the internal face of solid insulation cover is prevent the insulating gas that and the baffling-face of baffling commutation for intercepting from the blowout side spray connecing electric main body, and the outside wall surface of solid insulation cover is the fitting surface coordinated with the internal face of tank body body.
2. tank body according to claim 1, is characterized in that, the thermal endurance class of the inwall of solid insulation cover is not less than C level.
3. tank body according to claim 1 and 2, is characterized in that, solid insulation cover is set with by least two points of bodies and forms, and in each point of body, the class of insulation of at least two is different.
4. tank body according to claim 3, is characterized in that, in each point of body, the adjacent wall swelling of adjacent two coordinates, and the outer peripheral face swelling of outermost point of body or adhesive asserably are on the internal face of tank body body.
5. tank body according to claim 4, is characterized in that, the jacket wall of each point of body offers the seam extended vertically, the ring end face at the two ends of seam through point of body.
6. tank body according to claim 5, is characterized in that, the internal face of tank body body is convexly equipped with the limited step of block at solid insulation cover two ends.
7. arc control device, comprise tank body, the tank body body of tank body is pipe box shape, be provided with in tank body body by moving, what quiet power connection end was assembled relatively connects electric main body, the periphery connecing electric main body is provided with and blows to the open type of the internal face of tank body body or the blowout side of open type for the insulating gas after arc extinguishing, it is characterized in that, be equipped with every being located at the solid insulation cover between outer peripheral face and the internal face of tank body body connecing electric main body in tank body body, the internal face of solid insulation cover is prevent the insulating gas that and the baffling-face of baffling commutation for intercepting from blowout side spray, the outside wall surface of solid insulation cover is the fitting surface coordinated with the internal face of tank body body.
8. arc control device according to claim 7, is characterized in that, the two ends of solid insulation cover are stretched out from the two ends connecing electric main body.
9. the arc control device according to claim 7 or 8, is characterized in that, solid insulation cover is set with by least two points of bodies and forms, and in each point of body, the class of insulation of at least two is different.
10. switching device, comprise the operating mechanism of arc control device and upper driving connection thereof, arc control device comprise tank body, the tank body body of tank body is pipe box shape, be provided with in tank body body by moving, what quiet power connection end was assembled relatively connects electric main body, the periphery connecing electric main body is provided with and blows to the open type of the internal face of tank body body or the blowout side of open type for the insulating gas after arc extinguishing, it is characterized in that, be equipped with every being located at the solid insulation cover between outer peripheral face and the internal face of tank body body connecing electric main body in tank body body, the internal face of solid insulation cover is prevent the insulating gas that and the baffling-face of baffling commutation for intercepting from blowout side spray, the outside wall surface of solid insulation cover is the fitting surface coordinated with the internal face of tank body body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642830.XU CN204242925U (en) | 2014-10-31 | 2014-10-31 | Switching device and arc control device, tank body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420642830.XU CN204242925U (en) | 2014-10-31 | 2014-10-31 | Switching device and arc control device, tank body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242925U true CN204242925U (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420642830.XU Expired - Fee Related CN204242925U (en) | 2014-10-31 | 2014-10-31 | Switching device and arc control device, tank body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362032A (en) * | 2014-10-31 | 2015-02-18 | 平高集团有限公司 | Switching device and arc extinction chamber and tank thereof |
-
2014
- 2014-10-31 CN CN201420642830.XU patent/CN204242925U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362032A (en) * | 2014-10-31 | 2015-02-18 | 平高集团有限公司 | Switching device and arc extinction chamber and tank thereof |
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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: 20150401 Termination date: 20211031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |