CN209150668U - 33KVCT casing - Google Patents
33KVCT casing Download PDFInfo
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- CN209150668U CN209150668U CN201822211502.5U CN201822211502U CN209150668U CN 209150668 U CN209150668 U CN 209150668U CN 201822211502 U CN201822211502 U CN 201822211502U CN 209150668 U CN209150668 U CN 209150668U
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- insulation sleeve
- 33kvct
- sleeve
- conduct piece
- insulation
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Abstract
The utility model relates to a kind of 33KVCT casings, comprising conduct piece and it is sheathed on the sleeve body of the conduct piece circumferential direction, described sleeve pipe ontology includes the first insulation sleeve, the second insulation sleeve, third insulation sleeve, flange part, and first insulation sleeve has multiple in the first annular skirt being circumferentially arranged.The inside of second insulation sleeve has the first gauze screen, there is secondary shielding net inside the third insulation sleeve, the third insulation sleeve is circumferentially being provided with multiple second annular shirt rims, it is also provided with multiple ground wire connecting holes on the third insulation sleeve, the ground wire connecting hole radially extends along the third insulation sleeve and is connected to first gauze screen by conducting wire.The utility model improves the electric field branch around conduct piece, improves the dielectric strength of medium, and avoid the alternate electric discharge of mutual inductor, it is ensured that safe operation improves the resistance to operating condition of product.
Description
Technical field
The utility model relates to a kind of high-voltage wall bushings, specifically, being related to a kind of 33KVCT casing.
Background technique
Currently, high-voltage wall bushing is the chief component of high-voltage electrical equipment, when high-voltage current conductor need across
It is necessary to using high-voltage wall bushing when the technology box shell different from its current potential or wall, be mainly used for controller switching equipment into,
Outlet and cable connection.High-voltage wall bushing has good electric conductivity, safety, leakproofness, is therefore widely used
In urban distribution network, the ring network power supply of each distribution system.During longtime running, since casing is a kind of typical electric field tool
There is the insulation system of strong perpendicular media surface component, dielectric is easy breakdown；The voltage on its surface is very uneven, and outside
The edge electric field of motor is extremely concentrated, it is easy to corona and gliding spark discharge occur from there.It is attached that external electrode must be improved thus
Close electric field branch, improves the dielectric strength of medium.
In controller switching equipment, galvanic circle passes through metal partion (metp) by high-voltage wall bushing, is connected to afterwards by busbar
Current transformer, then it is connected to outlet cable from current transformer, due to mutual inductor itself and high voltage conduction, so mutual inductor sheet
Body is also subject to the effect of high voltage, there are problems that partial discharge, and mutual inductor molding needs more epoxy resin, and molding mostly uses
Vacuum pouring mode needs a large amount of energy consumptions in forming process.It is limited by controller switching equipment cabinet body width, mutual inductor room space has
Limit can not stand mutual inductor room when installation, again in addition the weight of mutual inductor itself is extremely difficult in 100kg or so, installation.
Mutual inductor installation is limited by the limitation of switch cabinet size, and phase spacing is inadequate, needs plus partition is to guarantee phase insulation.In environment
Badly, under filthy, moisture conditions, the electric discharge being easy to produce between mutual inductor eventually leads to breakdown.
Utility model content
Technical problem to be solved in the utility model provides a kind of 33KVCT casing, can not only improve conductor external electrode
Neighbouring electric field branch improves the dielectric strength of medium, and has a mutual inductor coil, makes in the installation carried out to controller switching equipment
Work easy, and 33KVCT casing is grounded and eliminates electric field action, and the electric discharge phenomena between mutual inductor is avoided to occur.
In order to solve the above technical problems, the utility model provides a kind of 33KVCT casing, comprising conduct piece and it is sheathed on
The sleeve body of the conduct piece circumferential direction, described sleeve pipe ontology include the first insulation sleeve, the second insulation sleeve, third insulation sleeve, method
Blue part；First insulation sleeve has multiple in the first annular skirt being circumferentially arranged；The inside of second insulation sleeve has
First gauze screen, first gauze screen are arranged around the conduct piece；Second insulation sleeve outer surface is set with mutual inductor
Coil；The third insulation sleeve has a cavity extended to the left, and described conduct piece one end has the protruded into the cavity
One end；There is secondary shielding net, the secondary shielding net is arranged around the first end inside the third insulation sleeve；Institute
It states third insulation sleeve and is circumferentially being provided with multiple second annular shirt rims, multiple ground wire connections are also provided on the third insulation sleeve
Hole, the ground wire connecting hole radially extend along the third insulation sleeve and are connected to first gauze screen by conducting wire.Institute
State the hex bolts for being connected through a screw thread in ground wire connecting hole and being connected with ground line.
Preferably, the flange part is sheathed on the third insulation sleeve, the flange part has along described sleeve pipe ontology
The installation mating surface being arranged radially offers multiple mounting holes in the installation mating surface.
Preferably, the secondary shielding net is semicircle.
Preferably, the conduct piece is copper post.
Preferably, first gauze screen and secondary shielding net are copper mesh.
Preferably, the material of described sleeve pipe ontology is epoxy resin or glass fibre reinforced nylon.
Preferably, the first annular skirt is 9, second annular shirt rim is 3.
By using above-mentioned technical proposal, the utility model can obtain following technical effect:
1, since bushing is a kind of insulation system of the typical electric field with strong perpendicular media surface component, insulation is situated between
Matter is easy breakdown, and the electric field around conduct piece is very uneven.33KVCT casing provided by the utility model passes through around conduction
Part is arranged the first gauze screen and carrys out uniform electric field, improves the electric field branch around conduct piece, improves the dielectric strength of medium.
2, secondary shielding net is arranged around the first end, reduces the electric field strength of the first end, meets
The requirement of electrical property.
3, by the way that first end to be set in the cavity of the third insulation sleeve and in the first insulation sleeve, third insulation sleeve
Multiple annular shirt rims are arranged in surface, increase creepage distance.
4, by making sleeve body surface be ground potential by ground wire connecting hole integral ground on sleeve body surface, from
And mutual inductor coil can be directly installed in sleeve body, leading to 33KVCT sheath assembly surface is that ground potential makes entirely
33KVCT sleeve surface avoids the alternate electric discharge of mutual inductor coil without electric field action, it is ensured that safe operation improves the resistance to work of product
Condition.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments:
Fig. 1 is cross-sectional view when the utility model 33KVCT casing removes mutual inductor coil；
Fig. 2 is structural schematic diagram when the utility model 33KVCT casing removes mutual inductor coil；
Fig. 3 is the structural schematic diagram of other side when the utility model 33KVCT casing removes mutual inductor coil；
Fig. 4 is left side view when the utility model 33KVCT casing removes mutual inductor coil；
Fig. 5 is the structural schematic diagram of the utility model 33KVCT casing.
Specific embodiment
It is practical below in conjunction with this to keep the purposes, technical schemes and advantages of the utility model embodiment clearer
The technical solution in the utility model embodiment is clearly and completely described in attached drawing in novel embodiment, shows
So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.It is practical based on this
Embodiment in novel, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment is fallen within the protection scope of the utility model.Therefore, the implementation to the utility model provided in the accompanying drawings below
The detailed description of mode is not intended to limit the range of claimed invention, but is merely representative of the utility model
Selected embodiment.
In conjunction with shown in Fig. 1 to Fig. 5, the present embodiment provides a kind of 33KVCT casings, comprising conduct piece 5 and are sheathed on described
The circumferential sleeve body of conduct piece 5, described sleeve pipe ontology include the first insulation sleeve 1, the second insulation sleeve 2, third insulation sleeve 3, method
Blue part 4；First insulation sleeve 1 has multiple first annular skirt 1A arranged in the horizontal direction；Second insulation sleeve 2
Inside have the first gauze screen 2A, the first gauze screen 2A around the conduct piece 5 setting；Outside second insulation sleeve 2
Surface is set with mutual inductor coil；The third insulation sleeve 3 has a cavity 3A extended to the left, 5 one end of conduct piece tool
There is the first end 5A protruded into the cavity 3A；There is secondary shielding net 3E, second screen inside the third insulation sleeve 3
Net 3E is covered to be arranged around the first end 5A；First insulation sleeve 1 is circumferentially being provided with multiple second annular shirt rim 3D, institute
It states and is also provided with multiple ground wire connecting hole 3B on third insulation sleeve 3, diameter of the ground wire connecting hole 3B along the third insulation sleeve 3
To extension and the first gauze screen 2A is connected to by conducting wire 3C.Preferably, the conduct piece 5 is copper post.Described sleeve pipe sheet
The material of body is epoxy resin or glass fibre reinforced nylon, preferably epoxy resin.The ground wire connecting hole 3B is 2,
It is symmetrical arranged on third insulation sleeve 3.The first annular skirt 1A is 9, and the second annular shirt rim 3D is 3.Specifically,
Since 33KVCT casing is a kind of insulation system of the typical electric field with strong perpendicular media surface component, dielectric is easy quilt
Breakdown；Electric field around conduct piece 5 is very uneven, by the way that the first gauze screen 2A is arranged come uniform electric field around conduct piece 5, changes
Electric field branch around kind conduct piece 5, improves the dielectric strength of epoxy resin.Secondary shielding net 3E is surrounded into the first end
Portion 5A setting, reduces the electric field strength of the first end 5A, meets the requirement of electrical property.By the way that first end 5A is arranged
In (length of cavity 3A is greater than first end 5A and protrudes into the length of cavity 3A) in the cavity 3A of the third insulation sleeve 3 and
Multiple annular shirt rims are arranged in first insulation sleeve 1,3 surface of third insulation sleeve, increase creepage distance.In the ground wire connecting hole 3B
Inside connect into hex bolts, and hex bolts be grounded, the first gauze screen 2A can by conducting wire 3C and hex bolts into
Row ground connection, and do so can also be achieved and 33KVCT sleeve surface is grounded, so that entire 33KVCT sleeve surface is without electric field
Effect, i.e. sleeve body surface is without electric field action.
Preferably, as shown in Fig. 1 and Fig. 4, the flange part 4 is sheathed on the third insulation sleeve 3, the flange part 4
With offering multiple mounting holes on installation the mating surface 4A, the installation mating surface 4A being arranged radially along described sleeve pipe ontology
4B.Specifically, the mounting hole 4B be four, the 33KVCT casing need across need across metal plate when, the peace
Dress mating surface 4A can conform to metal sheet surface and be locked by mounting hole 4B and bolt and nut cooperation.
As shown in Figure 5, the 33KVCT casing of the present embodiment has a mutual inductor coil, and the mutual inductor coil is sheathed on institute
It states on the second insulation sleeve 2, the 33KVCT casing is grounded by ground wire connecting hole 3B.Specifically, due to sleeve body surface without
Electric field action, so as to which mutual inductor coil is mounted directly on the second insulation sleeve 2 of sleeve body, 33KVCT sleeve surface
Make entire 33KVCT casing for ground potential, avoid the alternate electric discharge of mutual inductor coil, it is ensured that safe operation improves the resistance to of product
Operating condition.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the utility model, for
For those skilled in the art, various modifications and changes may be made to the present invention.All spirit and original in the utility model
Within then, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of 33KVCT casing includes conduct piece (5) and the sleeve body for being sheathed on the conduct piece (5) circumferential direction, spy
Sign is that described sleeve pipe ontology includes the first insulation sleeve (1), the second insulation sleeve (2), third insulation sleeve (3), flange part (4)；
First insulation sleeve (1) has multiple in the first annular skirt (1A) being circumferentially arranged；
The inside of second insulation sleeve (2) has the first gauze screen (2A), and first gauze screen (2A) surrounds the conduction
Part (5) setting；Second insulation sleeve (2) outer surface is set with mutual inductor coil；
The third insulation sleeve (3) has a cavity (3A) extended to the left, and described conduct piece (5) one end, which has, protrudes into the sky
First end (5A) in chamber (3A)；There is secondary shielding net (3E) inside the third insulation sleeve (3), the secondary shielding net
(3E) is arranged around the first end (5A)；The third insulation sleeve (3) is circumferentially being provided with multiple second annular shirt rims
(3D) is also provided with multiple ground wire connecting holes (3B) on the third insulation sleeve (3), and the ground wire connecting hole (3B) is along described
Three insulation sleeves (3) radially extend and are connected to first gauze screen (2A) by conducting wire (3C)；
The hex bolts being connected with ground line is connected through a screw thread in the ground wire connecting hole (3B).
2. 33KVCT casing according to claim 1, which is characterized in that it is exhausted that the flange part (4) is sheathed on the third
On edge set (3), the flange part (4) has the installation mating surface (4A) being arranged radially along described sleeve pipe ontology, and the installation is matched
Multiple mounting holes (4B) is offered on conjunction face (4A).
3. 33KVCT casing according to claim 2, which is characterized in that the secondary shielding net (3E) is semicircle.
4. 33KVCT casing according to claim 1, which is characterized in that the conduct piece (5) is copper post.
5. 33KVCT casing according to claim 1, which is characterized in that first gauze screen (2A) and secondary shielding net
(3E) is copper mesh.
6. 33KVCT casing according to claim 1, which is characterized in that the material of described sleeve pipe ontology be epoxy resin or
Glass fibre reinforced nylon.
7. 33KVCT casing according to claim 1, which is characterized in that the first annular skirt (1A) is 9, described
Second annular shirt rim (3D) is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822211502.5U CN209150668U (en) | 2018-12-26 | 2018-12-26 | 33KVCT casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822211502.5U CN209150668U (en) | 2018-12-26 | 2018-12-26 | 33KVCT casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209150668U true CN209150668U (en) | 2019-07-23 |
Family
ID=67290911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822211502.5U Active CN209150668U (en) | 2018-12-26 | 2018-12-26 | 33KVCT casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209150668U (en) |
-
2018
- 2018-12-26 CN CN201822211502.5U patent/CN209150668U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: 33KVCT sleeve Effective date of registration: 20230313 Granted publication date: 20190723 Pledgee: Postal Savings Bank of China Limited Xiamen Tong'an District Sub-branch Pledgor: XIAMEN HUANYUAN ELECTRIC POWER TECHNOLOGY Co.,Ltd. Registration number: Y2023980034682 |