CN209216805U - A kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch - Google Patents
A kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch Download PDFInfo
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- CN209216805U CN209216805U CN201822204141.1U CN201822204141U CN209216805U CN 209216805 U CN209216805 U CN 209216805U CN 201822204141 U CN201822204141 U CN 201822204141U CN 209216805 U CN209216805 U CN 209216805U
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- healing
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Abstract
The utility model discloses a kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch, dry-type high-voltage self-healing type parallel condenser includes tank of power capacitor, capacitor case lid, capacitor terminal, pressure relief valve, pressure switch and exchanging structure, exchanging structure includes structural body, fixture nut and sealing ring, the exchanging structure of pressure switch is covered mounted in capacitor box, and the bottom of structural body passes through capacitor case lid, sealing ring and fixture nut.The utility model structure is simple, easy to install and use, can satisfy capacitor indoors under external environment condition long-term safety, stabilization, reliably working requirement.
Description
Technical field
The utility model belongs to field of electrical equipment, and in particular to a kind of dry-type high-voltage self-healing type parallel condenser pressure
The exchanging structure of switch.
Background technique
It is oil-free in dry-type high-voltage self-healing type parallel condenser box shell, rely on its self-healing feature, can prevent medium weakness and
Shelf depreciation bring is endangered and is reliably run, and is adapted for mount to the indoor substation of Urban Underground substation, heavy construction
And emphasis fire prevention place.
Self-healing performance of this kind of capacitor due to that must take the dielectric breakdown point under high field intensity into account, pretends the metal-plated for pole plate
Layer is very thin.When this kind of capacitor since operating ambient temperature is higher, or overvoltage and high current are often born, so that medium accelerates
Aging, can not self-healing when element may be punctured by large area, puncture position medium under arcing, generate a large amount of gas
Body increased dramatically capacitor internal pressure, often result in shell bulge, or even cause to burst, and may cause to other equipment
Harm.Therefore, the internal fault protection of dry-type high-voltage self-healing type parallel condenser is for ensureing that equipment safety operation has important meaning
Justice.
The method that low pressure self healing capacitor used in 1kV or following voltage class electric system is often used pressure protection.
Its working principle is that generating gas when capacitor internal failure, capacitor internal air pressure is caused to increase, so that capacitor case becomes
Shape breaks internal current connection sheet, to cut off the power, keeps capacitor out of service.But high-voltage parallel capacitor is applied to
6kV, 10kV, 35kV voltage class, if inside using breaking electric current connection sheet by the way of, the insulation distance of fracture and its break
Mouth-shaped is not able to satisfy the requirement of isolated high voltage, between fracture can re-ignition, the high power overvoltage of generation can electricity in harm system
Gas equipment.Therefore, this tension fracture type protective device is not suitable in high pressure self-healing type parallel condenser.
Pressure switch is a kind of method protected using the principle of pressure, and pressure switch is smaller, and pedestal is not embroider
Steel is made, and can be directly installed on capacitor cover plate.Then the contact of pressure switch and the insulation distance of cover board cannot
Reach the requirement of insulation distance in electric system.Therefore, it is necessary to solve the Insulation Problems of pressure switch.
Utility model content
For the requirement of electric system shunt capacitor internal fault relay protection, it is high that the utility model provides a kind of dry type
Press the exchanging structure of self-healing type parallel condenser pressure switch.
Technical solution used by the utility model is as follows.
The utility model provides a kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch, and dry type is high
Press self-healing type parallel condenser by tank of power capacitor, capacitor case lid, capacitor terminal, pressure relief valve, pressure switch,
Exchanging structure is constituted.The exchanging structure of pressure switch is covered mounted in capacitor box.
Exchanging structure is made of structural body, fixture nut, sealing ring.The bottom of structural body passes through capacitor case lid
Hole penetrates sealing ring and 2 fixture nuts, tightens fixture nut, while applying sealant along sealing ring.
Structural body material uses nylon, and the groove of diameter 40mm, depth 60mm is arranged at top, have among it inner hole and on
There is screw thread at lower both ends, and the screw thread small 10mm of diameter simultaneously is arranged at bottom, and there are also the concentric grooves of depth 15mm, 7mm, surface has
13 skirts.Sealing ring is made of fluorine element rubber, and " O " type lasts 10 at a high temperature of 100 DEG C5Hour will not aging.Fixed spiral shell
Mother uses nylon material, hexagonal configuration.
Pressure switch is placed in the top groove of structural body, is combined by screw thread precision.It is the skirt of structural body, recessed
Slot, inner hole and screw thread increase electric insulation distance, so that pressure switch bottom metal portion climbs electricity to capacitor case lid
Distance all meets power system insulation distance.
The beneficial effects of the utility model are: according to the material of dry-type high-voltage self-healing type parallel condenser, structure and characteristic,
Pressure switch can solve the problems, such as self healing capacitor internal fault relay protection, be effectively prevented from the generation of accident.
The utility model structure is simple, easy to install and use, and it is long-term under external environment condition indoors to can satisfy capacitor
Safe and stable, reliably working requirement.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of the utility model installation on the capacitor.
Fig. 2 is the longitudinal section structural drawing of part A amplification in Fig. 1.
Fig. 3 is the longitudinal section structural drawing of part B amplification in Fig. 2.
In figure, 1- tank of power capacitor；2- capacitor case lid；3- capacitor terminal；4- pressure relief valve；5- pressure is opened
It closes；6- exchanging structure；
61- structural body；62- sealing ring；63- fixture nut.
Specific embodiment
The utility model is further described below in conjunction with the drawings and specific embodiments.
As it can be seen that dry-type high-voltage self-healing type parallel condenser is by tank of power capacitor (1), capacitor case lid (2), electricity in Fig. 1
Container connecting terminal (3), pressure relief valve (4), pressure switch (5) and exchanging structure (6) are constituted.The switching of pressure switch (5)
Structure (6) is on capacitor case lid (2).
Visible in figure 2 and figure 3: exchanging structure (6) is by structural body (61), fixture nut (62), sealing ring (63) structure
At.The bottom of structural body (61) passes through the hole of capacitor case lid (62), penetrates sealing ring (63) and 2 fixture nuts (62),
Tighten fixture nut (62).Structural body (61), top is fluted, has inner hole among it and upper and lower ends have screw thread,
Screw thread is arranged at its bottom, and diameter is small simultaneously, and there are also concentric grooves, there is skirt on surface.
Pressure switch (5) is placed in the top groove of structural body (61), is combined by screw thread precision.Structural body (61)
Skirt, groove, inner hole and screw thread increase electric insulation distance so that the metal part of pressure switch (5) bottom to electricity
The creepage distance of container case lid (2) all meets power system insulation distance.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (2)
1. a kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch, the dry-type high-voltage self-healing is in parallel
Capacitor includes tank of power capacitor, capacitor case lid, capacitor terminal, pressure relief valve, pressure switch and pressure switch
Exchanging structure, the exchanging structure of the pressure switch is characterized by: the exchanging structure includes structural body, fixed spiral shell
Female and sealing ring, the exchanging structure are covered mounted in capacitor box, the bottom of the structural body pass through the hole of capacitor case lid,
Sealing ring and fixture nut are penetrated, the fixture nut is tightened.
2. exchanging structure according to claim 1, it is characterized in that: the structural body material is nylon, top have 40mm,
The groove of deep 60mm, there is inner hole in centre and upper and lower ends have screw thread, and the screw thread small 10mm of diameter simultaneously is arranged at bottom, and there are also depth
There are 13 skirts on the concentric grooves of 15mm, 7mm, surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204141.1U CN209216805U (en) | 2018-12-26 | 2018-12-26 | A kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204141.1U CN209216805U (en) | 2018-12-26 | 2018-12-26 | A kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209216805U true CN209216805U (en) | 2019-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822204141.1U Active CN209216805U (en) | 2018-12-26 | 2018-12-26 | A kind of exchanging structure of dry-type high-voltage self-healing type parallel condenser pressure switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN209216805U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022083792A3 (en) * | 2021-07-12 | 2022-06-09 | 无锡市电力滤波有限公司 | Pressure protector for high-voltage self-healing capacitor |
-
2018
- 2018-12-26 CN CN201822204141.1U patent/CN209216805U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022083792A3 (en) * | 2021-07-12 | 2022-06-09 | 无锡市电力滤波有限公司 | Pressure protector for high-voltage self-healing capacitor |
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