CN206249975U - A kind of support insulator of embedded metal shielding construction - Google Patents
A kind of support insulator of embedded metal shielding construction Download PDFInfo
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- CN206249975U CN206249975U CN201621386552.1U CN201621386552U CN206249975U CN 206249975 U CN206249975 U CN 206249975U CN 201621386552 U CN201621386552 U CN 201621386552U CN 206249975 U CN206249975 U CN 206249975U
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- shielding construction
- insulating body
- support insulator
- inserts
- crimping
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Abstract
A kind of support insulator of embedded metal shielding construction of the utility model, including in the insulating body of cylindrical type；The two ends of the insulating body are respectively provided with installation inserts, and are embedded with the shielding construction electrically connected with corresponding end installation inserts, install inserts and are arranged on shielding construction inner side；The shielding construction is set in a ring, and built-in end is provided with the crimping of outside turnup；The conductive electrode that connection is coaxially disposed in one end end face of the insulating body, the installation inserts and shielding construction equipotential link of conductive electrode and same one end.Shielding construction, inserts and contact electrode are all equipotential body, can improve support insulator surface corona；Crimping using external diameter more than air-gap-free contact portion diameter, can correspond to contact air gap portion, so that the high field intensity that the air gap of decaying is produced, improves the integral insulation level between connection electrode, reduce the axial length of insulating body.In addition, post insulator minor structure is full symmetric, it is easy to process, be easily installed.
Description
Technical field
The utility model is related to Cubicle Gas-Insulated Switchgear, specially a kind of branch of embedded metal shielding construction
Post insulator.
Background technology
In gas insulation switch cabinet, support insulator is usually a termination high-field electrode, and one end earth electrode plays support
And insulating effect.In order to meet good insulating properties, it is smaller that the size of support insulator typically cannot all be done, and limits gas
The miniaturization of body insulated switch cabinet.Be made very small for support insulator by some products, then can be led in switch cubicle longtime running
Cause support insulator surface to produce prolonged corona, have impact on switch cubicle operational reliability.In addition, when support insulator and electricity
When pole loose contact is good, it is easy to the phenomenon for producing local field strength to concentrate in the small the air gap near contact surface, the field intensity
Considerably beyond the critical field strength of air.Prior art does not make effectively Improving Measurements for this loose contact phenomenon.
Utility model content
For problems of the prior art, the utility model provides a kind of post insulator of embedded metal shielding construction
Son, can be effectively improved support insulator surface corona, when decay support insulator is good with electrode loose contact near contact surface
The phenomenon for producing local field strength to concentrate in small the air gap, improves the integral insulation level of gas insulation switch cabinet.
The utility model is to be achieved through the following technical solutions：
A kind of support insulator of embedded metal shielding construction, including in the insulating body of cylindrical type；The insulating body
Two ends be respectively provided with installation inserts, and be embedded with the shielding construction that inserts electrically connect be installed with corresponding end, inserts setting is installed
On the inside of shielding construction；The shielding construction is set in a ring, and built-in end is provided with the crimping of outside turnup；The insulating body
One end end face in the conductive electrode that is coaxially disposed of connection, the installation inserts and shielding construction equipotential of conductive electrode and same one end
Connection.
Preferably, described insulating body is made up of poured with epoxy resin；Insulating body, shielding construction and installation inserts are adopted
Use integrated casting.
Preferably, described crimping external diameter should be less than the external diameter of insulating body.
Preferably, described crimping external diameter should be less than the external diameter at least 7mm of insulating body.
Preferably, the distance between the shielding construction at the insulating body two ends is not less than minimum insulation distance.
Preferably, crimping external diameter more than insulating body and conductive electrode contact portion diameter, described contact portion without
Contact air gap.
Preferably, crimping external diameter is more than insulating body and the diameter at least 1mm of conductive electrode contact portion.
Preferably, shielding construction is made of metallic shield net.
Preferably, the coplanar setting of insulating body end face of the end face of shielding construction and homonymy.
Compared with prior art, the utility model has following beneficial technique effect：
A kind of support insulator of embedded metal shielding construction of the utility model, by the integration of the two ends of insulating body
Cast shielding construction and the installation inserts electrically connected with shielding construction, shielding construction, inserts and contact electrode are all equipotential body,
Support insulator surface corona can be improved；Crimping using external diameter more than air-gap-free contact portion diameter, can correspond to
Contact air gap portion, so that the high field intensity that the air gap of decaying is produced, improves the integral insulation level between connection electrode, subtracts
The small axial length of insulating body.In addition, post insulator minor structure is full symmetric, it is easy to process, be easily installed.
Further, shielding construction used is conventional metallic shield net, and with low cost, easily manufactured is excellent
Point.
Further, by the dimension limitation of shielding construction, and install inserts insulation set, preferably improve it
Insulating properties, can uniform support insulator surface field.
Brief description of the drawings
Fig. 1 is the complete section schematic front view of support insulator described in the utility model example.
Fig. 2 is the partial enlarged drawing of contact air gap in Fig. 1.
In figure：Insulating body 1, the first shielding construction 2, secondary shielding structure 3, crimping 4, first installs inserts 5, the second peace
Assembly part 6, the 3rd installs inserts 7, and the 4th installs inserts 8, contacts air gap 9, earth electrode 10.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, described is to explanation of the present utility model
It is not to limit.
A kind of support insulator of embedded metal shielding construction of the utility model, insulate in this example for dry air
Illustrated in metal enclosed switchgear, as shown in figure 1, it is included in cylindrical type epoxy insulation main body 1；1 liang of insulating body
End integrated casting has first and second installation inserts 5,6 and third and fourth installation inserts 7,8, and has electricity with corresponding end installation inserts
First and second shielding construction 2,3 of connection；Crimping outwardly is respectively arranged with first and second shielding construction 2,3 for setting in a ring
4, the external diameter of crimping 4 should be less than the external diameter of insulating body 1；As shown in figure 1, when earth electrode 10 and insulating body 1 are connected, due to
The chamfering of earth electrode 10, forms between its contact jaw outer rim and insulating body 1 and less contacts air gap 9；Such as Fig. 2 institutes
Show, the external diameter of the crimping 4 of shielding construction should also be larger than the minimum point that air gap 9 is contacted between insulator and conductive electrode, that is,
Crimping 4 will be higher by the minimum point of contact air gap 9 on the vertical section of contact air gap 9；Namely the external diameter of crimping 4 is greater than
The diameter of both contact portions, the contactless air gap 9 of contact portion, as shown in Figure 2；First shielding construction 2 and secondary shielding structure 3
Between should there is sufficiently long insulation distance to meet insulating requirements.
Occur when support insulator described in the utility model is with earth electrode 10 or the good loose contact of high-field electrode 11
The small the air gap of similar contact gap 9, the air gap local field strength is concentrated very much, extremely disadvantageous to integral insulation.The utility model
There is the shielding construction that electrically connects with inserts support insulator two ends are built-in, built-in the first shielding construction 2, first and second is installed
Inserts 5,6 and earth electrode 10 are all ground potential body, built-in secondary shielding structure 3, third and fourth installation inserts 7,8 and high pressure
Electrode 11 is all high potential body, and the utility model small air gap that can decay produces the 70% of high field intensity, less than air critical field
Strong 80%, and can uniform support insulator surface field.
Claims (9)
1. a kind of support insulator of embedded metal shielding construction, it is characterised in that including the insulating body (1) in cylindrical type；
The two ends of the insulating body (1) are respectively provided with installation inserts, and are embedded with the screen electrically connected with corresponding end installation inserts
Shield structure, installs inserts and is arranged on shielding construction inner side；
The shielding construction is set in a ring, and built-in end is provided with the crimping (4) of outside turnup；
The conductive electrode that connection is coaxially disposed in one end end face of the insulating body (1), the installation of conductive electrode and same one end
Inserts and shielding construction equipotential link.
2. support insulator according to claim 1, it is characterised in that described insulating body (1) is poured by epoxy resin
Note is made；Insulating body (1), shielding construction and installation inserts use integrated casting.
3. support insulator according to claim 1, it is characterised in that described crimping (4) external diameter should be less than insulation master
The external diameter of body (1).
4. support insulator according to claim 1, it is characterised in that described crimping (4) external diameter should be less than insulation master
The external diameter at least 7mm of body (1).
5. support insulator according to claim 1, it is characterised in that the shielding construction at insulating body (1) two ends
The distance between be not less than minimum insulation distance.
6. support insulator according to claim 1, it is characterised in that crimping (4) external diameter is more than insulating body (1) and leads
The diameter of electric electrode contact part, the contactless air gap of described contact portion (9).
7. support insulator according to claim 6, it is characterised in that crimping (4) external diameter is more than insulating body (1) and leads
The diameter at least 1mm of electric electrode contact part.
8. support insulator according to claim 1, it is characterised in that shielding construction is made of metallic shield net.
9. support insulator according to claim 1, it is characterised in that the end face of shielding construction and the insulating body of homonymy
(1) the coplanar setting of end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386552.1U CN206249975U (en) | 2016-12-16 | 2016-12-16 | A kind of support insulator of embedded metal shielding construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386552.1U CN206249975U (en) | 2016-12-16 | 2016-12-16 | A kind of support insulator of embedded metal shielding construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206249975U true CN206249975U (en) | 2017-06-13 |
Family
ID=59008970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621386552.1U Active CN206249975U (en) | 2016-12-16 | 2016-12-16 | A kind of support insulator of embedded metal shielding construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206249975U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094008A (en) * | 2017-06-26 | 2017-08-25 | 中国工程物理研究院流体物理研究所 | Gas rail is switched |
-
2016
- 2016-12-16 CN CN201621386552.1U patent/CN206249975U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107094008A (en) * | 2017-06-26 | 2017-08-25 | 中国工程物理研究院流体物理研究所 | Gas rail is switched |
| CN107094008B (en) * | 2017-06-26 | 2023-04-18 | 中国工程物理研究院流体物理研究所 | Gas rail switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210812 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an province high tech Zone No. 7 Tang Xing Lu Patentee before: CHINA XD ELECTRIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |