CN103177827A - Liquid and gas isolation plate - Google Patents
Liquid and gas isolation plate Download PDFInfo
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- CN103177827A CN103177827A CN2013100682152A CN201310068215A CN103177827A CN 103177827 A CN103177827 A CN 103177827A CN 2013100682152 A CN2013100682152 A CN 2013100682152A CN 201310068215 A CN201310068215 A CN 201310068215A CN 103177827 A CN103177827 A CN 103177827A
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- full skirt
- oil
- isolation plate
- disc
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Abstract
The invention discloses a liquid and gas isolation plate which is integrally of a disc-shaped structure and is integrally made of high-strength MC (monomer casting) nylon materials. A conductor via hole (2) is arranged in the center of a disc, an oil side for isolating oil of a transformer and a gas side for isolating SF6 gas are respectively arranged on two sides of the disc of the isolation plate, umbrella skirt grooves (3) are respectively arranged on the oil side and the gas side of the disc of the isolation plate and are staggered with one another, depths of the umbrella skirt grooves on the oil side are different from the umbrella skirt grooves on the gas side of the disc of the isolation plate, and the umbrella skirt grooves at ends of the oil side are deeper than the umbrella skirt grooves at ends of the gas side. The liquid and gas isolation plate has the advantages that a pressure-welding sealing structure is arranged between the liquid and gas isolation plate and a metal flange, sealing rings, reserved gaps and fillets are arranged at three contact joints of the metal flange, the oil of the transformer and the gas, and accordingly risks of insulating flashover are reduced while the sealing performance is guaranteed.
Description
Technical field
The invention belongs to dividing plate, especially liquid air bound plate structure technical field.
Technical background
In the applied environment that needs the dielectric isolation in power equipment in the past, the traditional insulating material dividing plate of general employing, the dividing plate here plays two basic roles, it is supportive conductors and prevent that electric current from going back to ground, requirement of mechanical strength and the electric insulation requirement of strength of system that correspondence has been distinguished in these two effects, its general fit dimension increases its creepage distance to reach the requirement of dielectric strength, and isolation insulating barrier used does not adopt full skirt usually in equipment, and rare application for the different environment of both sides dielectric material.Oil-gas casing is a kind ofly to be connected equipment used with GIS for transformer, but the excessive scope of using that limited of its volume, high cost, be not easy to promote simultaneously.
Traditional dividing plate adopts the structure of symmetric design, the requirement of the electric insulation when not being suitable on the one hand the oil gas isolation during varying environment of dividing plate both sides; Larger different pressures is being born on both sides when being used for isolation on the other hand, and traditional dividing plate also is difficult to satisfy the requirement of its mechanical strength.
For the oil-gas casing of similar purpose high cost, be difficult to apply.
Summary of the invention
Purpose of the present invention will provide a kind of asymmetrical for the defective that overcomes above-mentioned existing diaphragm structure existence just, electric insulation under steep-front VFTO generator service conditions be can satisfy and solution with requirement of mechanical strength, i.e. a kind of novel liquid air bound panel configuration required.
The objective of the invention is to realize by following technical solution.
A kind of liquid air bound plate, the present invention is characterised in that, whole installation is disc-shaped structure, and the whole high strength MC nylon material that adopts, and is provided with the conductor via hole in disc centre, dividing plate disk both sides is set to respectively the oily side and isolation SF of isolating transformer oil
6The gas side of gas is respectively arranged with the full skirt groove in dividing plate disk oil side and gas side both sides, and the full skirt groove of both sides is dislocation to be arranged, and the groove depth of both sides difference, and the full skirt groove depth of oily side is greater than the full skirt groove depth of gas side.
The full skirt of liquid air bound plate disk oil side of the present invention and each side of gas side is equidistant arrangement, and umbrella distance and the umbrella of each side are thick identical, and the edge of full skirt adopts semicircular structure.
Adopt compression joint sealing structure between liquid air bound plate of the present invention and metal flange, the three binding site places that contact with transformer oil, gas at metal flange utilize sealing ring, stay gap and fillet design, have reduced the danger of insulation flashover when guaranteeing sealing.
Further set forth content of the present invention below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A cutaway view of Fig. 1;
Fig. 3 is liquid air bound board mounting structure figure of the present invention.
In figure: 1. with flange clamping place; 2. conductor via hole; 3. full skirt groove; 4. gas side dividing plate full skirt; 5. oily side dividing plate full skirt; 6. screw hole; 7. metal flange; 8. separator edge; 9. rubber seal; 10. screw thread.
Embodiment
See Fig. 1, Fig. 2, Fig. 3, a kind of liquid air bound plate, the present invention is characterised in that, whole installation is disc-shaped structure, and the whole high strength MC nylon material that adopts, be provided with conductor via hole 2 in disc centre, liquid air bound plate disk both sides are set to respectively the oily side and isolation SF of isolating transformer oil
6The gas side of gas is respectively arranged with full skirt groove 3 in liquid air bound plate disk oil side and gas side both sides, and the full skirt groove 3 of both sides is dislocation to be arranged, and the groove depth of both sides difference, and the full skirt groove depth of oily side is greater than the full skirt groove depth of gas side.
The full skirt of liquid air bound plate disk oil side of the present invention and each side of gas side is equidistant arrangement, and umbrella distance and the umbrella of each side are thick identical, and the edge of full skirt adopts semicircular structure.
Adopt compression joint sealing structure between liquid air bound plate of the present invention and metal flange, the three binding site places that contact with transformer oil, gas at metal flange utilize sealing ring, stay gap and fillet design, have reduced the danger of insulation flashover when guaranteeing sealing.
the present invention by dividing plate to equipment in different parts when isolating, in general equipment (as GIS), the medium of benzvalene form dividing plate both sides is normally identical, in the dividing plate media of both sides not simultaneously, traditional dividing plate can not satisfy the requirement under specific environment in mechanical strength and electric insulation requirement, when both sides are respectively oily when gentle, variation along with gas pressure intensity between the gentle side of oil side has larger pressure difference, on the other hand, media of both sides is not simultaneously, electric strength is also variant, cannot treat different things as the same on insulating Design, the present invention provides a kind of New air bound panel configuration, especially corresponding to a kind of liquid air bound panel configuration for steep-front VFTO (fast transient overvoltage) generator.
The embodiment of the present invention provides a kind of liquid air bound panel configuration, comprises whole exterior design, the characteristics that the each several part size cooperatively interacts.Made by high strength MC nylon, have lightweight, intensity is high, self-lubricating, wear-resisting, anticorrosion, the multiple special performances such as insulation, comparatively stable chemical characteristic is arranged in the coil neutralization air, be processed as disc-shaped structure, as shown in Figure 1 and Figure 2, disc centre is that conductor leaves and passes through the hole.
The full skirt of described liquid air bound plate is distributed on dividing plate axisymmetrically, its profile as shown in Figure 1, the full skirt of the left and right sides is respectively the gentle side of oily side, each side has four to five full skirts, each full skirt umbrella distance and umbrella are thick identical, and the length of the full skirt of the left and right sides and inclination angle are not identical, simultaneously, each full skirt of the left and right sides is not all also the consideration that symmetrical, such design mainly contains two aspects:
Described liquid air bound plate is the same with traditional dividing plate, has been the insulating element of electric insulation and mechanical fixation, and from the angle of electric insulation, the left side of liquid air bound plate is transformer oil, and the right side is SF
6Gas, the relative dielectric constant of transformer oil are between 2.2-2.4, and SF
6The relative dielectric constant of gas is 1.002, considers both flashover distances, adopts the longer design of dividing plate full skirt length of oily side in design, can obtain like this creepage distance of more growing in transformer.
Liquid air bound plate in the present invention also needs to bear certain mechanical load, when the full skirt position of both sides is symmetrical, will have a position that thickness is thin especially at the recess of full skirt, will become the weakness of mechanical load.When the impulse voltage generator of steep-front VFTO generator partly is full of oil, liquid air bound plate will bear sizable pressure, and the weak spot of mechanical strength will produce the stable operation of whole system and threaten.In the present invention, the full skirt of liquid air bound plate intersection is corresponding, has strengthened mechanical strength.
In described technical scheme, adopting oil is also to consider that moisture is SF as the transition of liquid part
6The impurity of harmfulness maximum in gas does not volatilize if the moisture isolation is tight, can be to SF
6Under environment, the safe operation of electric equipment produces very large threat.At first, the existence of moisture affects the generation of gas analyte; Secondly, water and acid impurities can make material corrosion together the time, cause mechanically actuated operation malfunctioning; In addition, moisture can sharply descend edge flashing voltage at surface of solids condensation at low temperatures, causes accident.
Described liquid air bound plate periphery leaves fixing projection used, length and thickness are checked according to the mechanical strength of ultra-high molecular weight polyethylene, and is different in specific embodiment, in general, the length of highlight is generally 25 ~ 40mm, and the size of thickness bonding apparatus is specifically considered.
At ring flange and dividing plate, transformer oil or SF
6The contact-making surface intersection of gas can produce three binding sites, as shown in Figure 3, comparatively weak in electric insulation, carried out fillet processing in dividing plate and the part that ring flange is fixed in the embodiment of the present invention, and leave the part gap and seal by sealing ring, avoided this kind problem.
In sum, the liquid air bound panel configuration that the present invention mentions has electric insulation and the mechanical strength property more excellent than the dividing plate of traditional type, has also reduced moisture to SF by oil sealing simultaneously
6The threat of insulation has improved liquid air bound stability of plates, and then has improved the operational reliability of whole system.
The present invention by the Seal Design of asymmetric structural design and different materials three binding sites, has improved electric insulation intensity and the mechanical strength of liquid air bound plate in the situation that significantly do not increase raw materials consumption.
Fig. 1, Fig. 2 are embodiment of the present invention liquid air bound plate structure schematic diagram, as shown in Figure 2, this device left side (oily side) is five full skirts, axial symmetry distributes on the disk of dividing plate diameter 1000mm, high-pressure conduit is left by via hole used in the center, and center bore is 137mm, seals with sealing ring on the contact-making surface of high-pressure conduit, simultaneously leave the inclination angle identical with full skirt in oily side, the possibility of bucking electrode to reduce to discharge arranged on high-pressure conduit.Can obtain creepage distance to VFTO generating means safe enough threshold degree in this side.Right side (SF
6Gas side) adopt similarly design, the length of full skirt is less, and the inclination angle is bigger, for SF
6Gas can obtain conductor to the enough safety threshold degree of 3MV generating means shell.
The material that whole liquid air bound plate adopts is high strength MC nylon.The thickness of liquid air bound plate except full skirt is 100mm, in conjunction with the segment thickness that the both sides full skirt provides, considers that hydraulic pressure and the steepness switch sections of Marx generator after oil-filled fills SF
6After air pressure, this part can obtain reliable mechanical strength.
Installing of the embodiment of the present invention, leave at the edge of bulkhead sides and be about 25mm, thickness is the projection of 70mm, be fixed in bolt on the ring flange of steep-front VFTO generator, and sealed.At ring flange and dividing plate, transformer oil or SF
6The contact-making surface intersection of gas can produce three binding sites, as shown in Fig. 3, has left in an embodiment fillet, in Fig. 1 as shown in R5, and leave the gap of 3-5mm in installation process, seal with sealing ring.
Described liquid air bound panel configuration can also adopt other high-intensity engineering plastics except the high strength MC nylon that employing is mentioned, also may realize purpose of the present invention.
Dividing plate full skirt shape is made simple change, and when the dissymmetrical structure of both sides was not made the essence change, the object of the invention also can realize.
Claims (2)
1. liquid air bound plate, it is characterized in that, whole installation is disc-shaped structure, and the whole high strength MC nylon material that adopts, be provided with conductor via hole (2) in disc centre, dividing plate disk both sides are set to respectively the oily side of isolating transformer oil and the gas side of isolation SF6 gas, be respectively arranged with full skirt groove (3) in dividing plate disk oil side and gas side both sides, the full skirt groove (3) of both sides is dislocation to be arranged, and the groove depth of both sides is different, and the full skirt groove depth of oily side is greater than the full skirt groove depth of gas side.
2. a kind of liquid air bound plate according to claim 1, be further characterized in that, the full skirt of dividing plate disk oil side and each side of gas side is equidistant arrangement, and umbrella distance and the umbrella of each side are thick identical, and the edge of full skirt adopts semicircular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100682152A CN103177827A (en) | 2013-03-05 | 2013-03-05 | Liquid and gas isolation plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100682152A CN103177827A (en) | 2013-03-05 | 2013-03-05 | Liquid and gas isolation plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103177827A true CN103177827A (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100682152A Pending CN103177827A (en) | 2013-03-05 | 2013-03-05 | Liquid and gas isolation plate |
Country Status (1)
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| CN (1) | CN103177827A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901650A (en) * | 2010-07-26 | 2010-12-01 | 句容市华阳电器有限公司 | Disk insulator |
| CN201975176U (en) * | 2010-12-24 | 2011-09-14 | 向荣集团有限公司 | Disc type shield insulator |
| JP2011192492A (en) * | 2010-03-12 | 2011-09-29 | Chugoku Electric Power Co Inc:The | Insulating support member of overhead wire and building for electric equipment |
| CN203103027U (en) * | 2013-03-05 | 2013-07-31 | 云南电力试验研究院（集团）有限公司电力研究院 | Liquid-gas baffle plate |
-
2013
- 2013-03-05 CN CN2013100682152A patent/CN103177827A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011192492A (en) * | 2010-03-12 | 2011-09-29 | Chugoku Electric Power Co Inc:The | Insulating support member of overhead wire and building for electric equipment |
| CN101901650A (en) * | 2010-07-26 | 2010-12-01 | 句容市华阳电器有限公司 | Disk insulator |
| CN201975176U (en) * | 2010-12-24 | 2011-09-14 | 向荣集团有限公司 | Disc type shield insulator |
| CN203103027U (en) * | 2013-03-05 | 2013-07-31 | 云南电力试验研究院（集团）有限公司电力研究院 | Liquid-gas baffle plate |
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Application publication date: 20130626 |