CN218918626U - Oil paper capacitive bushing electrical test sealing device and transformer bushing - Google Patents
Oil paper capacitive bushing electrical test sealing device and transformer bushing Download PDFInfo
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- CN218918626U CN218918626U CN202223593720.2U CN202223593720U CN218918626U CN 218918626 U CN218918626 U CN 218918626U CN 202223593720 U CN202223593720 U CN 202223593720U CN 218918626 U CN218918626 U CN 218918626U
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Abstract
The utility model provides an oilpaper capacitive bushing electrical test sealing device and a transformer bushing, and relates to the field of transformer components. The oil paper capacitive bushing electrical test nut sealing device comprises a bushing nut sealing device, an overhaul port and a sealing cover, wherein a circular groove is formed in the position of a terminal screen grounding terminal of the bushing nut sealing device, a groove bulge is welded on the circular groove to form the overhaul port, the sealing cover is arranged on the overhaul port, and the sealing cover is detachably connected with the overhaul port. The utility model can overcome the defect that the prior transformer bushing cannot safely perform tests such as electrical conventional insulation, dielectric loss, capacitance and the like due to compact structure, so that the periodic preventive test of the low-voltage side bushing of the transformer can be performed regularly, the hidden danger of the bushing can be found in time, the damage to major equipment of the main transformer is avoided, and meanwhile, the oil paper capacitive bushing electrical test sealing device provided by the embodiment has the advantages of low processing cost, simple structure, simplicity in installation and maintenance and good sealing property.
Description
Technical Field
The utility model relates to the field of transformer components, in particular to an oilpaper capacitive bushing electrical test sealing device and a transformer bushing.
Background
The transformer bushing belongs to an important transformer component, the bushing has defects which often cause severe accidents such as bushing explosion, transformer ignition and the like, the bushing at the low-voltage side of the large-scale oil immersed main transformer in the power plant generally adopts an oil paper capacitor bushing, the bushing generally comprises an oil conservator, an upper porcelain bushing, a lower porcelain bushing, a capacitor core, a grounding flange, a measuring terminal and the like, and the measuring terminal is generally arranged at the bottom of the bushing. In the production practice of a thermal power plant, because the low-voltage side sealing nut of the transformer is compact in structure, the bottom of the low-voltage side sealing nut is generally in a fully sealed state, and in the electrical test of low-voltage side sleeve pipe is periodically insulated, dielectric loss and capacitance, the phenomena that the space at the end screen is extremely narrow and invisible, the wire connection is difficult to conduct in the electrical test, the end screen is possibly connected with poor ground and the like during recovery, the work load of the hoisting nut in the field construction process is extremely huge, the overhaul progress of a unit is easily influenced by weather, and the discharge in operation is caused due to the poor ground connection of the end screen of the sleeve pipe of the low-voltage side sleeve pipe is extremely easily influenced when the end screen grounding cover is reinstalled, so that the sleeve pipe explosion is caused to cause accidents, the operation of equipment is influenced and huge economic loss is caused.
In view of this, the present utility model has been made.
Disclosure of Invention
The utility model aims to provide an oilpaper capacitive bushing electrical test sealing device which can overcome the defect that a transformer bushing cannot safely perform tests such as electrical conventional insulation, dielectric loss, capacitance and the like due to compact structure, so that periodic preventive tests of the low-voltage side bushing of the transformer can be performed regularly, hidden danger of the bushing can be found timely, and damage to major equipment of a main transformer is avoided.
The utility model aims to provide a transformer bushing provided with the oil paper capacitive bushing electrical test sealing device, which can effectively solve the problem of difficult test of a bushing at the low-voltage side of a transformer, effectively reduce test risk and further improve the safety and reliability of a large-scale oil immersed transformer.
Embodiments of the present utility model are implemented as follows:
in a first aspect, the utility model provides an oilpaper capacitive bushing electrical test nut sealing device, which comprises a bushing nut sealing device, an overhaul port and a sealing cover, wherein a circular groove is formed in the position of a terminal screen grounding terminal of the bushing nut sealing device, a groove bulge is welded on the circular groove to form the overhaul port, the sealing cover is covered on the overhaul port, and the sealing cover is detachably connected with the overhaul port.
In an alternative embodiment, the access opening has a diameter of 180-220mm and a height of 45-55mm.
In an alternative embodiment, a sealing strip is arranged in the sealing cover.
In an alternative embodiment, the sealing cover and the access opening are connected by nuts and bolts.
In an alternative embodiment, the number of the nuts and the bolts is four, and the nuts and the bolts are uniformly distributed along the outer circular surface of the sealing cover.
In an alternative embodiment, the oilpaper capacitive bushing electrical test seal device further comprises a lifting seat arranged at the bottom of the bushing seal.
In an alternative embodiment, the oilpaper capacitive bushing electrical test seal further comprises a low voltage bushing disposed on top of the bushing seal.
In a second aspect, the present utility model provides a transformer bushing comprising an oiled paper capacitive bushing electrical test enclosure as defined in any one of the preceding embodiments.
The embodiment of the utility model has the beneficial effects that:
according to the oil paper capacitive bushing electrical test nut sealing device, the round groove is formed in the position of the end screen grounding terminal of the bushing nut sealing, the convex opening of the groove is welded to form the access opening, and the arrangement of the access opening can overcome the defect that an existing transformer bushing cannot safely conduct tests such as electrical conventional insulation, dielectric loss and capacitance due to the fact that the structure is compact, so that periodic preventive tests of the low-voltage side bushing of the transformer can be conducted regularly, hidden danger of the bushing can be found timely, damage to major equipment of the main transformer is avoided, meanwhile, the access opening is sealed through the sealing cover with the sealing strip, and water and moisture are prevented from entering the bushing nut sealing from the access opening. The oilpaper capacitive bushing electrical test sealing device provided by the embodiment has the advantages of low processing cost, simple structure, simplicity in installation and maintenance and good tightness. The transformer bushing provided with the oil paper capacitive bushing electrical test sealing device can effectively solve the problem of difficult test of the bushing at the low voltage side of the transformer, effectively reduce test risk and further improve the safety and reliability of the large oil immersed transformer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic structural diagram of an oilpaper capacitive bushing electrical test nut sealing device according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of a sealing cover of an oilpaper capacitive bushing electrical test sealing device according to an embodiment of the utility model.
Icon: 100-oilpaper capacitive bushing electrical test sealing device;
101-sleeve sealing mother; 102-an access port; 103-sealing cover; 104, sealing strips; 105-nut; 106-a bolt; 107-lifting seat; 108-low voltage bushing.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
First embodiment
Referring to fig. 1 and 2, the present embodiment provides an oilpaper capacitive bushing electrical test sealing device 100, which includes a bushing sealing nut 101, an access hole 102 and a sealing cover 103.
In this embodiment, a circular groove is formed at the position of the end screen grounding terminal of the sleeve sealing nut 101, a groove convex opening is welded on the circular groove to form an access opening 102, the diameter of the access opening 102 is 180-220mm, and the height of the access opening 102 is 45-55mm. The design of access port 102 facilitates timely testing of electrical conventional insulation, dielectric loss, and capacitance by operators.
In this embodiment, the sealing cover 103 is used for sealing the access hole 102, so as to prevent water and moisture from entering the access hole 102 during operation, and further damage the sleeve sealing nut 101. In this embodiment, a sealing strip 104 is disposed in the sealing cover 103, the sealing cover 103 is covered on the access hole 102, and the sealing cover 103 is detachably connected with the access hole 102. There are various ways of detachable connection, including but not limited to clamping, bolting 106 connection or screwing, etc., and in this embodiment, the sealing cover 103 and the access opening 102 are connected by nuts 105 and bolts 106. The number of the nuts 105 and the bolts 106 is four, and the nuts are uniformly distributed along the outer circumferential surface of the sealing cover 103.
In addition, in this embodiment, the oilpaper capacitive bushing electrical test sealing device 100 further includes a lifting seat 107 and a low-voltage bushing 108, the lifting seat 107 is disposed at the bottom of the bushing sealing nut 101, and the low-voltage bushing 108 is disposed at the top of the bushing sealing nut 101. In this embodiment, the lifting seat 107 may enable the sleeve sealing nut 101 to be lifted, so as to facilitate maintenance.
The working principle of the oilpaper capacitive bushing electrical test sealing device 100 is as follows:
the circular groove is formed in the position of the end screen grounding terminal of the sleeve sealing nut 101, the convex opening of the groove is welded to form the overhaul opening 102, the arrangement of the overhaul opening 102 can improve the defects that an existing transformer sleeve cannot safely conduct tests such as electrical conventional insulation, dielectric loss and capacitance due to compact structure, so that the periodic preventive test of the transformer low-voltage side sleeve can be conducted regularly, hidden danger of the sleeve can be found timely, major equipment of the main transformer is prevented from being damaged, meanwhile, the overhaul opening 102 is sealed through the sealing cover 103 with the sealing strip 104, water and moisture are prevented from entering the sleeve sealing nut 101 from the overhaul opening 102, the sealing cover 103 is connected with the overhaul opening 102 through the nuts 105 and the bolts 106, the sealing cover 103 can be opened during overhaul, and overhaul is facilitated. The oilpaper capacitive bushing electrical test sealing device 100 provided by the embodiment is low in processing cost, simple in structure, simple in installation and maintenance, good in sealing performance, and capable of effectively solving the problem of difficult testing of the low-voltage side bushing of the transformer, effectively reducing test risks, and improving safety and reliability of the large-scale oil immersed transformer.
In addition, this embodiment also provides a transformer bushing, and it includes above-mentioned oil paper capacitive bushing electrical test and seals female device 100, installs the transformer bushing of above-mentioned oil paper capacitive bushing electrical test seals female device 100, can effectively solve the problem of transformer low pressure side sleeve test difficulty, effectively reduces test risk to improve large-scale oil immersed transformer fail safe nature.
In summary, according to the oil paper capacitive bushing electrical test nut sealing device 100 provided by the utility model, the circular groove is formed at the position of the end screen grounding terminal of the bushing nut sealing 101, and the convex opening of the groove is welded to form the access hole 102, so that the defect that the conventional transformer bushing cannot safely perform tests such as electrical conventional insulation, dielectric loss, capacitance and the like due to compact structure can be overcome, and the periodic preventive test of the low-voltage side bushing of the transformer can be performed regularly, so that the hidden danger of the bushing can be found timely, the damage of major equipment of the main transformer can be avoided, and meanwhile, the embodiment realizes the sealing of the access hole 102 through the sealing cover 103 with the sealing strip 104, and water and moisture are prevented from entering the bushing nut sealing 101 from the access hole 102. The oilpaper capacitive bushing electrical test sealing device 100 provided by the embodiment is low in processing cost, simple in structure, simple in installation and maintenance and good in sealing performance.
The transformer bushing provided with the oil paper capacitive bushing electrical test sealing device 100 can effectively solve the problem of difficult test of the bushing at the low-voltage side of the transformer, effectively reduce test risk and further improve the safety and reliability of the large-scale oil immersed transformer.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (8)
1. The utility model provides a female device of oilpaper capacitive bushing electrical test seal, its characterized in that includes the bushing seal female, access hole and sealed lid, the circular slot is seted up to the female end screen earthing terminal place of bushing seal, the welding has the groove bulge to form on the circular slot the access hole, sealed lid is located the access hole, sealed lid with the access hole can dismantle the connection.
2. The oilpaper capacitive bushing electrical test seal device of claim 1 wherein the diameter of the access opening is 180-220mm and the height of the access opening is 45-55mm.
3. The oilpaper capacitive bushing electrical test nut sealing device according to claim 1, wherein a sealing strip is arranged in the sealing cover.
4. The oilpaper capacitive bushing electrical test seal of claim 1 wherein the seal cap and the access port are connected by nuts and bolts.
5. The oilpaper capacitive bushing electrical test nut sealing device according to claim 4, wherein the number of the nuts and the bolts is four, and the nuts and the bolts are uniformly distributed along the outer circular surface of the sealing cover.
6. The oilpaper capacitive bushing electrical test seal of claim 1 further comprising a raised seat disposed at a bottom of the bushing seal.
7. The oilpaper capacitive bushing electrical test seal of claim 1 further comprising a low voltage bushing disposed on top of the bushing seal.
8. A transformer bushing, characterized in that it comprises an oilpaper capacitive bushing electrical test sealing device according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223593720.2U CN218918626U (en) | 2022-12-29 | 2022-12-29 | Oil paper capacitive bushing electrical test sealing device and transformer bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223593720.2U CN218918626U (en) | 2022-12-29 | 2022-12-29 | Oil paper capacitive bushing electrical test sealing device and transformer bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218918626U true CN218918626U (en) | 2023-04-25 |
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ID=86009080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223593720.2U Active CN218918626U (en) | 2022-12-29 | 2022-12-29 | Oil paper capacitive bushing electrical test sealing device and transformer bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218918626U (en) |
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2022
- 2022-12-29 CN CN202223593720.2U patent/CN218918626U/en active Active
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