CN107611898B - Spherical pressure equalizing cap - Google Patents
Spherical pressure equalizing cap Download PDFInfo
- Publication number
- CN107611898B CN107611898B CN201711115186.5A CN201711115186A CN107611898B CN 107611898 B CN107611898 B CN 107611898B CN 201711115186 A CN201711115186 A CN 201711115186A CN 107611898 B CN107611898 B CN 107611898B
- Authority
- CN
- China
- Prior art keywords
- pressure equalizing
- equalizing cap
- spherical
- bolt
- cap body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 15
- 239000002131 composite material Substances 0.000 abstract description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 5
- 239000003292 glue Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The invention discloses a spherical pressure equalizing cap which is provided with a hemispherical pressure equalizing cap body, wherein the pressure equalizing cap body is made of conductive metal, and a blind hole and a groove are formed in the pressure equalizing cap body. The spherical voltage equalizing cap is sleeved on the connecting bolt of the transmission tower, so that the distribution of the field intensity on the surface of the bolt can be improved, the phenomena of discharging the bolt by a wire and the like are prevented, the phenomena of seriously damaging the safety of the transmission line such as flashover, short circuit, tripping and the like of the bolt are avoided, the service life of the composite material rod piece can be prolonged, and the additional installation operation is simple and convenient.
Description
Technical Field
The invention belongs to the technical field of power transmission tower assistance, and particularly relates to a spherical pressure equalizing cap.
Background
Along with the gradual maturity of the composite material rod piece and the tower technology, the application of the composite material rod piece and the tower technology is gradually promoted, and the composite material transmission tower is also gradually widely applied in a power transmission system. The bolts for the prior composite material transmission towers are all made of metal, the appearance is in a columnar structure, the metal bolts are easy to generate suspension potential in the operation process of the transmission line, a stronger electric field is generated at the tops of the bolts, and the field intensity is larger when the wires are closer to the tops of the bolts.
Under extreme weather conditions such as lightning wires, the field intensity at the top of the bolt is increased sharply, and when the field intensity reaches a certain value, air can be broken down to generate flashover, short circuit faults occur, line tripping is caused, and the safety of the power transmission line is seriously compromised. Meanwhile, when the surface of the composite material rod member is in surface flashover, the rod member is burnt by the electric arc, so that the service life of the composite material rod member is shortened.
So far, there is no better solution to the above-mentioned problems.
Disclosure of Invention
The invention aims to solve the technical problem of providing the spherical voltage-equalizing cap which can overcome the defects existing in the prior art, improve the field intensity distribution on the surface of a bolt and prevent the phenomena of wire-to-bolt discharge and the like.
The technical scheme adopted for achieving the purposes is as follows: a spherical pressure equalizing cap is provided with a hemispherical pressure equalizing cap body, wherein the pressure equalizing cap body is a conductive metal part, and a blind hole and a groove are formed in the pressure equalizing cap body.
The cross section of the groove is regular hexagon.
The diameter of the blind hole is 0.5-1 mm larger than the outer diameter of the screw thread of the matched bolt.
The groove is larger than the matched nut, and the clearance between the groove and the nut outline is 0.5-1 mm.
The diameter of the pressure equalizing cap body can be 3-4 times of the diameter of the circumscribing circle of the matched nut,
and the bottom of the pressure equalizing cap body is fixedly connected with an insulating gasket.
The blind hole is provided with threads, and the groove is of a cylindrical structure.
The equalizing cap body consists of a body inner core made of plastic or nylon or resin through injection molding and an equalizing cover made of hemispherical conductive metal material sleeved on the body inner core.
The pressure equalizing cover is connected with the inner core of the body in an adhesive mode.
The body inner core and the pressure equalizing cover are integrally injection molded.
The invention has the advantages that:
1) The spherical pressure equalizing cap is sleeved on the connecting bolt and firmly adhered by the adhesive, so that the field intensity distribution on the surface of the bolt can be improved, the phenomena of wire to bolt discharge and the like are prevented, the phenomena of serious damage to the safety of the power transmission line such as flashover, short circuit and tripping of the power transmission line and the like are avoided, the service life of the composite material rod piece is prolonged, and the additional installation operation is simple and convenient.
2) Through the arrangement of the insulating gaskets, the electric field on the hemispherical surface of the voltage equalizing cap can be prevented from being transmitted to the rod piece of the composite material transmission tower through contact,
3) The equalizing cap body is made of plastic or nylon or resin injection molding and other nonmetallic materials, and is sleeved with an equalizing cover made of hemispherical conductive metal, so that the equalizing cap body can be equivalent to a pure metal equalizing cap, a large amount of metal materials can be saved, and the manufacturing cost of the equalizing cap is reduced.
Drawings
The invention is further described with reference to the accompanying drawings:
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a bottom view of FIG. 1;
FIG. 3 is a schematic diagram of the structure of the second embodiment;
FIG. 4 is a bottom view of FIG. 3;
fig. 5 is a schematic structural view of a third embodiment;
FIG. 6 is a bottom view of FIG. 5;
fig. 7 is a schematic structural view of a fourth embodiment;
fig. 8 is a bottom view of fig. 7.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
As shown in fig. 1 and 2, the spherical pressure equalizing cap of the invention is provided with a hemispherical pressure equalizing cap body 1a, wherein the pressure equalizing cap body 1a is made of conductive metal, and a blind hole 2a and a groove 3a are arranged in the pressure equalizing cap body 1 a. The blind holes 2a can be as deep as possible to sufficiently accommodate the leakage part of the matched bolts after installation, so that the bottom plane of the pressure equalizing cap is ensured to be contacted with the rod piece, and the bolts and nuts are prevented from being exposed; the diameter of the blind hole 2a is 0.5-1 mm larger than the outer diameter of the screw thread of the matched bolt so as to ensure that the spherical equalizing cap can be conveniently sleeved on the bolt. The cross section of the groove 3a can be made into a regular hexagon matched with a hexagonal nut on the matched bolt, the depth of the groove 3a is larger than the height of the matched nut, the cross section size is larger than the outline of the matched nut, and the gap between the groove 3a and the nut can be 0.5-1 mm, so that the pressure equalizing cap can be easily sleeved on the bolt and the nut. The diameter of the equalizing cap body 1a can be 3-4 times of the diameter of the circumscribing circle of the matched nut, so that the spherical equalizing cap can effectively protect the connecting bolt and the rod piece. The blind holes 2a can be filled with a quantity of adhesive glue 4, so that the spherical pressure equalizing caps are firmly combined with the bolts, and loosening of the spherical pressure equalizing caps after being sleeved is prevented.
When the spherical pressure equalizing cap is used, after the rod pieces to be connected of the transmission tower are fastened and connected by bolts and nuts, the spherical pressure equalizing cap matched with the bolts is selected, the blind holes 2a of the spherical pressure equalizing cap are filled with the adhesive glue 4 and then are sleeved on the connecting bolts in an extrusion mode, and firm connection can be achieved after the adhesive glue 4 is coagulated. Therefore, the electric field intensity of the surface of the bolt on the transmission tower can be effectively reduced, the electric field intensity can be suitable for bolts with different sizes, and the installation is very convenient.
Example two
Referring to fig. 3 and 4, in order to avoid that an electric field on the hemispherical surface of the voltage-equalizing cap is conducted to a rod of the composite material transmission tower through contact, an insulating gasket 5 is arranged at the bottom of the voltage-equalizing cap body 1a in the embodiment, and the diameter of the insulating gasket 5 can be slightly larger than that of the voltage-equalizing cap body 1 a. The insulating gasket 5 can be assembled on site by sleeving the spherical pressure equalizing cap and the bolt, and can be fixedly connected with the pressure equalizing cap body 1a by embedding or bonding, so that the portable pressure equalizing cap is more convenient to carry.
In a third embodiment of the present invention,
referring to fig. 5 and 6, in the spherical pressure equalizing cap of the present embodiment, a thread matched with a bolt may be disposed in the blind hole 2b, the groove 3b is configured as a cylindrical structure, and the diameter of the groove 3b is slightly larger than the diameter of the circumcircle of the hexagonal nut on the bolt. Like this, can be with the cover of pressure equalizing cap revolve on the bolt when using for the two are connected more firmly, can play certain guard action to the part that the nut was exposed on bolt upper portion moreover, prevent the corrosion of this part screw thread, also make transmission tower and connecting bolt's dismouting change maintenance convenient and fast more.
Example IV
Referring to fig. 7 and 8, in the spherical pressure equalizing cap of the present embodiment, the pressure equalizing cap body 1b is made of a body inner core 1b-1 made of a non-metal material such as plastic, nylon or resin injection molding, and a pressure equalizing cover 1b-2 made of a hemispherical conductive metal material is fitted thereon. The pressure equalizing cover 1b-2 can be connected with the pressure equalizing cap body 1b-1 in an adhesive mode, and the pressure equalizing cap body 1b-1 and the pressure equalizing cover 1b-2 can be adhered into a whole through injection molding. Therefore, a large amount of metal materials can be saved, and the manufacturing cost of the spherical pressure equalizing cap is reduced.
The embodiments are only for illustrating the preferred technical scheme of the present invention and not for limiting the present invention, and other modifications and equivalents of the technical scheme of the present invention by those skilled in the art should be included in the scope of the claims of the present invention without departing from the spirit and scope of the technical scheme of the present invention.
Claims (8)
1. A spherical pressure equalizing cap, which is characterized in that: the pressure equalizing cap is provided with a hemispherical pressure equalizing cap body, wherein the pressure equalizing cap body is made of conductive metal, and a blind hole and a groove are formed in the pressure equalizing cap body;
the diameter of the blind hole is larger than the thread outer diameter of the matched bolt;
the groove is larger than the matched nut;
the bottom of the pressure equalizing cap body is fixedly connected with an insulating gasket;
the blind hole is provided with threads;
the equalizing cap body consists of a body inner core made of plastic or nylon or resin through injection molding and an equalizing cover made of hemispherical conductive metal material sleeved on the body inner core.
2. The spherical pressure equalizing cap according to claim 1, wherein: the cross section of the groove is regular hexagon.
3. The spherical pressure equalizing cap according to claim 1, wherein: the diameter of the blind hole is 0.5-1 mm larger than the outer diameter of the screw thread of the matched bolt.
4. A spherical pressure equalizing cap according to claim 1 or 2, wherein: the gap between the groove and the nut profile is 0.5-1 mm.
5. The spherical pressure equalizing cap according to claim 1, wherein: the diameter of the pressure equalizing cap body is 3-4 times of the diameter of the circumcircle of the matched nut.
6. The spherical pressure equalizing cap according to claim 1, wherein: the groove is of a cylindrical structure.
7. The spherical pressure equalizing cap according to claim 1, wherein: the pressure equalizing cover is connected with the inner core of the body in an adhesive mode.
8. The spherical pressure equalizing cap according to claim 1, wherein: the body inner core and the pressure equalizing cover are integrally injection molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711115186.5A CN107611898B (en) | 2017-11-13 | 2017-11-13 | Spherical pressure equalizing cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711115186.5A CN107611898B (en) | 2017-11-13 | 2017-11-13 | Spherical pressure equalizing cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107611898A CN107611898A (en) | 2018-01-19 |
| CN107611898B true CN107611898B (en) | 2024-01-26 |
Family
ID=61086400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711115186.5A Active CN107611898B (en) | 2017-11-13 | 2017-11-13 | Spherical pressure equalizing cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107611898B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108649513A (en) * | 2018-05-27 | 2018-10-12 | 徐峰 | Reduce the mask of corona discharge |
| CN108736424A (en) * | 2018-05-27 | 2018-11-02 | 徐峰 | The anticorona mask of wire clamp |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779693Y (en) * | 2005-02-03 | 2006-05-10 | 南京线路器材厂 | Anti-corona fastener |
| CN201518033U (en) * | 2009-10-23 | 2010-06-30 | 福建省电力试验研究院 | Portable pressure equalizing cap |
| CN201937017U (en) * | 2010-11-23 | 2011-08-17 | 浙江吉利汽车研究院有限公司 | Connection structure for wiring harness bonding |
| CN202094573U (en) * | 2011-05-25 | 2011-12-28 | 中国电力科学研究院 | Anti-corona ball for power transmission lines of high-altitude regions |
| CN202216972U (en) * | 2011-07-25 | 2012-05-09 | 东北电力科学研究院有限公司 | High-voltage bushing voltage-sharing cap for 66kV transformer |
| CN202383242U (en) * | 2011-12-23 | 2012-08-15 | 保定天威集团有限公司 | Partial discharge detection sensor of high-voltage motor |
| CN204102646U (en) * | 2014-09-05 | 2015-01-14 | 南京南瑞继保电气有限公司 | A kind of ready-package grading shield |
| CN204143974U (en) * | 2014-08-18 | 2015-02-04 | 国家电网公司 | A kind of odd-shaped cross section tubing |
| CN204302313U (en) * | 2014-12-05 | 2015-04-29 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | The equal pressure cap of a kind of high voltage electric equipment test lightweight |
| CN205414882U (en) * | 2016-03-14 | 2016-08-03 | 嵊州德庆机械有限公司 | Laborsaving nut rotating device |
| CN105839988A (en) * | 2016-05-20 | 2016-08-10 | 国网山东省电力公司高唐县供电公司 | Self-vertical positioning pole erecting device and construction method thereof |
| CN205446350U (en) * | 2016-03-24 | 2016-08-10 | 黄石市志云机电科技研究所 | Simple and easy outdoor bolt protector |
| CN205508429U (en) * | 2015-12-09 | 2016-08-24 | 四川大学 | High voltage spheric electrode |
| CN106067351A (en) * | 2016-08-04 | 2016-11-02 | 苏州华电电气股份有限公司 | A kind of gasbag-type metal scale extreme high voltage grading shield |
| CN206515427U (en) * | 2016-12-16 | 2017-09-22 | 河北省机电一体化中试基地 | One kind is used to simulate high voltage polymorphic type partial discharge model device |
| CN207559496U (en) * | 2017-11-13 | 2018-06-29 | 国网河南省电力公司经济技术研究院 | A kind of equal pressure cap of spherical shape |
-
2017
- 2017-11-13 CN CN201711115186.5A patent/CN107611898B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2779693Y (en) * | 2005-02-03 | 2006-05-10 | 南京线路器材厂 | Anti-corona fastener |
| CN201518033U (en) * | 2009-10-23 | 2010-06-30 | 福建省电力试验研究院 | Portable pressure equalizing cap |
| CN201937017U (en) * | 2010-11-23 | 2011-08-17 | 浙江吉利汽车研究院有限公司 | Connection structure for wiring harness bonding |
| CN202094573U (en) * | 2011-05-25 | 2011-12-28 | 中国电力科学研究院 | Anti-corona ball for power transmission lines of high-altitude regions |
| CN202216972U (en) * | 2011-07-25 | 2012-05-09 | 东北电力科学研究院有限公司 | High-voltage bushing voltage-sharing cap for 66kV transformer |
| CN202383242U (en) * | 2011-12-23 | 2012-08-15 | 保定天威集团有限公司 | Partial discharge detection sensor of high-voltage motor |
| CN204143974U (en) * | 2014-08-18 | 2015-02-04 | 国家电网公司 | A kind of odd-shaped cross section tubing |
| CN204102646U (en) * | 2014-09-05 | 2015-01-14 | 南京南瑞继保电气有限公司 | A kind of ready-package grading shield |
| CN204302313U (en) * | 2014-12-05 | 2015-04-29 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | The equal pressure cap of a kind of high voltage electric equipment test lightweight |
| CN205508429U (en) * | 2015-12-09 | 2016-08-24 | 四川大学 | High voltage spheric electrode |
| CN205414882U (en) * | 2016-03-14 | 2016-08-03 | 嵊州德庆机械有限公司 | Laborsaving nut rotating device |
| CN205446350U (en) * | 2016-03-24 | 2016-08-10 | 黄石市志云机电科技研究所 | Simple and easy outdoor bolt protector |
| CN105839988A (en) * | 2016-05-20 | 2016-08-10 | 国网山东省电力公司高唐县供电公司 | Self-vertical positioning pole erecting device and construction method thereof |
| CN106067351A (en) * | 2016-08-04 | 2016-11-02 | 苏州华电电气股份有限公司 | A kind of gasbag-type metal scale extreme high voltage grading shield |
| CN206515427U (en) * | 2016-12-16 | 2017-09-22 | 河北省机电一体化中试基地 | One kind is used to simulate high voltage polymorphic type partial discharge model device |
| CN207559496U (en) * | 2017-11-13 | 2018-06-29 | 国网河南省电力公司经济技术研究院 | A kind of equal pressure cap of spherical shape |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107611898A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107611898B (en) | Spherical pressure equalizing cap | |
| CN103326246B (en) | Three-electrode multi-channel gas spark switch | |
| CN202584956U (en) | Insulator device | |
| CN203051444U (en) | Bolt connecting pair with protecting jacket | |
| CN207559496U (en) | A kind of equal pressure cap of spherical shape | |
| CN206438180U (en) | A kind of storage water heater's inner bag electron anode | |
| CN203114851U (en) | Screw protecting cover | |
| CN204946630U (en) | A kind of waterproof lightning arrester | |
| CN204144569U (en) | A kind of ultralow temperature electric connector | |
| CN203982930U (en) | Damp-proof type lightning arrester | |
| CN207926338U (en) | A kind of novel motor wire outlet device | |
| CN205140752U (en) | Binding post for condenser | |
| CN212848901U (en) | High-voltage wiring knob insulator of ozone generator | |
| CN202067712U (en) | Housing of universal changeover switch | |
| CN201315300Y (en) | Oil-immersed type fully-closed high-voltage current-limiting fuse | |
| CN104201567A (en) | Internal insulating device for fixed gap overvoltage protector | |
| CN202512967U (en) | Insulator device | |
| CN217468965U (en) | Power supply connector | |
| CN208433252U (en) | Arrester | |
| CN219800636U (en) | Glass fiber reinforced plastic dry-type capacitance composite outer sleeve transformer sleeve | |
| CN215981053U (en) | Dustproof cap with sealing function | |
| CN201896069U (en) | Water seepage electrode device of ozone generator | |
| CN210715506U (en) | Conductive screw connecting device | |
| CN202812468U (en) | Cable clamp | |
| CN204029794U (en) | IGBT module glue pouring hole safeguard structure and protective plug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |