CN106098275B - cable protective layer protector and its adjusting method - Google Patents
cable protective layer protector and its adjusting method Download PDFInfo
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- CN106098275B CN106098275B CN201610573048.0A CN201610573048A CN106098275B CN 106098275 B CN106098275 B CN 106098275B CN 201610573048 A CN201610573048 A CN 201610573048A CN 106098275 B CN106098275 B CN 106098275B
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- Prior art keywords
- protector
- sub
- protective layer
- supporting element
- cable protective
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C13/00—Resistors not provided for elsewhere
- H01C13/02—Structural combinations of resistors
Abstract
The present invention relates to a kind of cable protective layer protector and its adjusting methods; cable protective layer protector includes the first sub- protector and matching piece; the first sub- protector can mutually be connect with assembling with the matching piece, and the matching piece includes the second sub- protector and/or supporting element.Above-mentioned cable protective layer protector one end is connect with cable sheath, and the other end is connect with the earth, and the first sub- protector and the assembling connection of matching piece protect cable sheath from damage；And; lower total origination action voltage can be obtained by the first sub- protector and/or the second sub- protector for dismantling respective numbers; to meet protection demand when cable uses rear decreasing insulating for a long time; the the first sub- protector and/or the second sub- protector of disassembly are replaced using support rod simultaneously; keep the remaining first sub- protector and/or the second sub- protector and the position of the junction of other elements in electric system constant, realizes that the origination action voltage of cable protective layer protector is adjustable.
Description
Technical field
The present invention relates to high voltage supply systems, more particularly to cable protective layer protector and its adjusting method.
Background technique
Cable protective layer protector is the tie point of metallic cable sheath and the earth, and the protection of high-tension cable sheath is universal at present
Using zinc oxide valve plate protector.Under normal working voltage, high resistance is presented in protector, passes through the operating current pole of protector
Its is small, is substantially at off state, and access is not formed between cable sheath and the earth, and no electric current passes through cable sheath.When
When having lightning stroke or Operating Over Voltage Surge wave to propagate in cable conductor, the metal sheath of cable can sense that the impact of generation is excessively electric
Pressure, when the lightning stroke or switching overvoltage occurred on cable sheath reaches the origination action voltage of protector, the resistance of protector
Value declines quickly, makes to be linked to be access between cable sheath and the earth, and the high current of generation is allowed to be flowed by cable sheath through protector
Greatly, the voltage of protector when at this moment the voltage on cable sheath only passes through electric current, and this voltage and origination action voltage
More much lower than impulse overvoltage, high current flows into the earth from protector, rather than flows into the earth by breakdown sheath, to protect
Protect destruction of the cable sheath from arriving overvoltage.After having served as loss of voltage, resistor valve sheet restores its high-resistance characteristic again, protection
Device and cable run are restored to the state normally disconnected with the earth again.
High-tension cable generally uses cross-linked polyethylene insulated cable, and the protective coverings of cable insulation resistance after long-play closes
Lattice rate shows the trend of being decreased obviously, and the insulation performance of sheath is deteriorated, and resistance to voltage levels decline, the protector of resistance to pressure ratio of sheath rises
Beginning operation voltage is low, and when there is overvoltage impact, protector is not yet acted, and the place of insulating sheath weakness will be first breakdown,
High current flows into the earth in that weak spot, and very big damage can be caused to sheath, so, the origination action of general protector
Overtension, the cable sheath after decreasing insulating can not be protected.
Summary of the invention
Based on this, it is necessary to aiming at the problem that cable sheath after general protector can not protect decreasing insulating,
A kind of cable protective layer protector and its control method are provided.
A kind of cable protective layer protector, including the first sub- protector and matching piece, the first sub- protector are matched with described
Component can mutually connect with assembling, and the matching piece includes the second sub- protector and/or supporting element.
Above-mentioned cable protective layer protector one end is connect with cable sheath, the other end with the earth connect, the first sub- protector and
The assembling connection of matching piece, when cable sheath is by voltge surge and voltage is more than the origination action voltage of protector,
The resistance value of protector declines quickly, and high current flows into the earth by protector, protects cable sheath from damage；Also, because
First sub- protector of connection and total origination action voltage of matching piece are the second son protections in the first sub- protector and connector
The sum of origination action voltage of device, it is possible to by the first sub- protector and/or the second sub- protector of dismantling respective numbers
Lower total origination action voltage is obtained, to meet protection demand when cable uses rear decreasing insulating for a long time, simultaneously
The the first sub- protector and/or the second sub- protector that disassembly is replaced using support rod make the remaining first sub- protector and/or the
Two sub- protectors and the position of the junction of other elements in electric system are constant, that is, pass through assembling the first son of series connection protection
Device realizes that the origination action voltage of cable protective layer protector is adjustable with the second sub- protector.
The described first sub- protector and the described second sub- protector include protector body in one of the embodiments,
And it is set to the first connector and the second connector of the protector body opposite end；The protector body is mutual
Or it can be filled by corresponding first connector with second connector between the protector body and the supporting element
It is connected in series with ground.
First connector can fill threadably with second connector in one of the embodiments,
It is connected with ground.
First connector and one in second connector are screw rod, another one in one of the embodiments,
For the nut cooperated with the screw rod.
The supporting element and first connector and second connector pass through screw thread in one of the embodiments,
The mode of connection connects.
Described supporting element one end is equipped with the external screw thread cooperated with the nut in one of the embodiments, and the other end is set
There is the internal thread hole that can cooperate with the screw rod.
One end that the supporting element offers the internal thread hole in one of the embodiments, is equipped with locating part.
The supporting element is conducting rod in one of the embodiments,.
A kind of adjusting method of cable protective layer protector, comprising the following steps:
First sub- protector and matching piece connect to obtain the origination action voltage for meeting cable sheath insulation performance；
After cable sheath insulating properties decline, the described first sub- protector or the matching piece of corresponding number are dismantled
To obtain the lower origination action voltage of cable protective layer protector.
The matching piece includes the second sub- protector and/or supporting element in one of the embodiments, in the cable protection
When layer decreasing insulating, when dismantling the first sub- protector and/or the second sub- protector, replaced with the supporting element
Described first sub- protector of disassembly and/or the installation site of the second sub- protector.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in a specific embodiment of the invention under cable protective layer protector first state；
Fig. 2 is the structural schematic diagram under the second state of cable protective layer protector shown in Fig. 1；
Fig. 3 is the structural schematic diagram under the cable protective layer protector third state shown in Fig. 1；
Fig. 4 is the flow chart of cable protective layer protector adjusting method in a specific embodiment of the invention.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
As shown in Figures 1 and 2, cable protective layer protector 100 includes the first sub- protector in a specific embodiment of the invention
10 and matching piece 30, the first sub- protector 10 can be connect with assembling with matching piece 30, matching piece 30 include the second sub- protector 32
And/or supporting element 34.
Above-mentioned 100 one end of cable protective layer protector is connect with cable sheath, and the other end is connect with the earth, the first sub- protector
10 with the assembling connection of matching piece 30, cable sheath is by voltge surge and voltage is more than that protector 100 plays initiating
When making voltage, the resistance value of protector 100 declines quickly, high current by protector 100 flow into the earth, protect cable sheath from
Damage；Also, because the first sub- protector 10 of connection and total origination action voltage of matching piece 30 are the first sub- protectors 10
With the sum of the origination action voltage of the in matching piece 30 second sub- protector 32, it is possible to by the first son for dismantling respective numbers
Protector 10 and/or the second sub- protector 32 obtain lower total origination action voltage, to meet after cable long-time use absolutely
Protection demand when edge performance declines, while replacing the first sub- protector 10 of disassembly and/or the second son to protect using support rod 34
Device 32 is protected, the junction of the remaining first sub- protector 10 and/or the second sub- protector 32 and other elements in electric system is made
Position it is constant, that is, pass through assembling the first sub- protector of series connection 10 and the second sub- realization of protector 52 cable protective layer protector
100 origination action voltage is adjustable.
First sub- protector 10 and the second sub- protector 32 including protector body 12 and are set to protector body 12
The first connector 14 and the second connector 16 of opposite end, protector body 12 include central core and are wrapped in outside central core
Outer layer, central core are made of pressure sensitive zinc oxide, and outer layer is made of packaging material, and the cross section of each protector body 12
Product is identical, i.e., the first sub- protector 10 is identical as the discharge capacity of the second sub- protector 32, can be serially connected.
Between first sub- protector 10 and the protector body 12 of the second sub- protector 32 or protector body 12 and support
Pass through corresponding first connector 14 and the assembling series connection of the second connector 16 between part 34.Specifically, the first connection
Part 14 is connect with the mode that the second connector 16 is connected through a screw thread, and in this embodiment, the first connector 14 is screw rod,
Second connector 16 is the nut with the first connector 14 cooperation for being screw rod.It is to be appreciated that in some other embodiment,
First connector 14 can also be connect with the second connector 16 by way of plug, it is not limited here.
Specifically, when one end of supporting element 34 is connect with the first connector 14 or the second connector 16, supporting element 34 and
A connection piece 14 is connected with the mode that the second connector 16 is all connected through a screw thread.In this embodiment, supporting element 34
One end is equipped with the external screw thread with the second connector 16 cooperation for nut, and the other end is equipped with can be with the second connector for screw rod
The internal thread hole of 14 cooperations.It is to be appreciated that supporting element 34 and the first connector 14 and second connect in some other embodiment
Fitting 16 can also be connected by the modes such as plugging, buckling, it is not limited here.
Further, supporting element 34 opens up internal thread one end equipped with locating part 341, makes supporting element 34 and electric system
In other elements cooperation when, other elements are limited to suitable installation site.In this embodiment, locating part 341
To be welded in the gasket that supporting element 34 is equipped with internal screw thread one end, gasket protrudes the circumferential edge setting of supporting element 34, for limiting
The installation site of other elements and supporting element 34.It is to be appreciated that in some other embodiment, locating part 341 may be
The convex block etc. of 34 edge of supporting element setting is protruded, it is not limited here.
Further, supporting element 34 is conducting rod, by the first sub- protector 10 and the second sub- protector 32 and electric system
In other elements be connected to it is conductive.
In this embodiment, it is protected as shown in Figure 1 for matching piece 30 including two the second sub- 32 cable sheaths of protector
The first state for protecting device 100 is connected between first sub- protector 10 and two the second sub- protectors 32 by screw rod and nut series connection
It connects to obtain biggish origination action voltage, can be used for protecting the preferable cable sheath of insulation performance；In cable for a long time using exhausted
After the decline of edge performance, a second sub- protector 32 can be dismantled and obtain the second of cable protective layer protector 100 as shown in Figure 2
State, while the installation site for the second sub- protector 32 for replacing having dismantled using supporting element 34, and pass through screw thread and residue
The second sub- protector 32 connect, obtain lower origination action voltage；Likewise, two the second sub- protectors can also be dismantled
32 obtain the third state of cable protective layer protector 100 as shown in Figure 3, and two supporting elements 34 are connected through a screw thread, then lead to
The internal screw thread for crossing the second connector 16 cooperates with the external screw thread of supporting element 34 to be connect with the first sub- protector 10, available lower
Origination action voltage.
As shown in figure 4, the adjusting method of cable protective layer protector 100 the following steps are included:
S10, the first sub- protector 10 connect to obtain the origination action for meeting cable sheath insulation performance electricity with matching piece 30
Pressure；
Specifically, matching piece 30 includes the second sub- protector 32 and/or supporting element 34, and the first sub- protector 10 and second is sub
Protector 32 includes protector body 12 and connects set on the first connector 14 and second of 12 opposite end of protector body
Part 16 passes through corresponding first connector 14 and second between protector body 12 or between protector body 12 and supporting element 34
Connector 16 can be connected in series with assembling threadably.
S20, when cable sheath for a long time use decreasing insulating after, dismantle corresponding number the first sub- protector 10 or
Matching piece 30 is to obtain the lower origination action voltage of cable protective layer protector 100.
Specifically, the origination action voltage of cable protective layer protector 100 is that each first sub- protector 10 and the second son are protected
The sum of origination action voltage of device 32, electricity after the first sub- protector 10 and/or the second sub- protector 32 for dismantling corresponding number
The origination action voltage of cable sheath protector 100 accordingly can also reduce, and pass through the first sub- protector 10 of assembling series connection and
Two sub- protectors 32 realize that the origination action voltage of cable protective layer protector 100 is adjustable.
Further, S20 step further includes, cable sheath decreasing insulating dismantle the first sub- protector 10 and/or
When the second sub- protector 32, the first sub- protector 10 of disassembly and/or the position of the second sub- protector 32 are replaced with supporting element 34.
Specifically, the mode that support rod 34 is connected through a screw thread is connected on the first connector 52 or the second connector 54.
When the origination action voltage for adjusting cable protective layer protector 100 dismantles sub- protector 10, dismantled using the substitution of supporting element 50
The first sub- protector 32 of sub- protector 10 or the second installation site, make the remaining first sub- protector 10 and/or the second son
Protector 32 and the position of the junction of other elements in electric system are constant.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (8)
1. a kind of cable protective layer protector, which is characterized in that including the first sub- protector and matching piece, the first sub- protector
It can mutually be connect with assembling with the matching piece, the matching piece includes the second sub- protector and supporting element；
Wherein, the described second sub- protector is detachably connected with the described first sub- protector, and the described first sub- protector and/
Or after the second sub- protector disassembly, the supporting element is set to the disassembly first sub- protector and/or second son
The installed position that protector is vacated, and the supporting element is conducting rod.
2. cable protective layer protector according to claim 1, which is characterized in that the first sub- protector and described second
Sub- protector includes protector body and the first connector for being set to the protector body opposite end and the second connection
Part；The protector body is mutual or the protector body and the supporting element between connect by corresponding described first
Fitting can be connected in series with assembling with second connector.
3. cable protective layer protector according to claim 2, which is characterized in that first connector and described second connects
Fitting can connect with assembling threadably.
4. cable protective layer protector according to claim 3, which is characterized in that first connector and described second connects
One is screw rod in fitting, and another one is the nut cooperated with the screw rod.
5. cable protective layer protector according to claim 4, which is characterized in that the supporting element and first connector
The mode being connected through a screw thread with second connector connects.
6. cable protective layer protector according to claim 5, which is characterized in that described supporting element one end is equipped with and the nut
The external screw thread of cooperation, the other end are equipped with the internal thread hole that can cooperate with the screw rod.
7. cable protective layer protector according to claim 6, which is characterized in that the supporting element offers the internal screw thread
The one end in hole is equipped with locating part.
8. a kind of adjusting method of cable protective layer protector, which comprises the following steps:
First sub- protector and the second sub- protector are detachably connected to obtain the origination action for meeting cable sheath insulation performance electricity
Pressure；
After cable sheath insulating properties decline, the described first sub- protector and/or second son of corresponding number are dismantled
Protector is to obtain the lower origination action voltage of cable protective layer protector；Meanwhile supporting element is set to disassembly described first
The installed position that sub- protector and/or the second sub- protector are vacated, and the supporting element is conducting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610573048.0A CN106098275B (en) | 2016-07-18 | 2016-07-18 | cable protective layer protector and its adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610573048.0A CN106098275B (en) | 2016-07-18 | 2016-07-18 | cable protective layer protector and its adjusting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106098275A CN106098275A (en) | 2016-11-09 |
| CN106098275B true CN106098275B (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610573048.0A Active CN106098275B (en) | 2016-07-18 | 2016-07-18 | cable protective layer protector and its adjusting method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535172B (en) * | 2018-03-28 | 2021-03-16 | 广东电网有限责任公司广州供电局 | Thermal aging test device and thermal aging test method |
| CN117784340B (en) * | 2024-02-24 | 2024-04-30 | 常熟迅联光电科技有限公司 | Rectangular optical fiber ribbon cable and rectangular butterfly-shaped lead-in cable |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7408757B2 (en) * | 2005-03-29 | 2008-08-05 | Diversified Technology Group, Inc. | Low voltage surge protectors with ground shield |
| CN201336195Y (en) * | 2008-12-23 | 2009-10-28 | 武汉雷泰新能源有限公司 | High-voltage power cable sheath protector |
| CN201639284U (en) * | 2009-12-04 | 2010-11-17 | 江苏省电力公司苏州供电公司 | 20 kV combined overvoltage protecting device |
| CN205335020U (en) * | 2015-12-31 | 2016-06-22 | 中国西电电气股份有限公司 | 750kV exchanges arrester |
| CN205789356U (en) * | 2016-07-18 | 2016-12-07 | 广州供电局有限公司 | cable protective layer protector |
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2016
- 2016-07-18 CN CN201610573048.0A patent/CN106098275B/en active Active
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| CN106098275A (en) | 2016-11-09 |
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Effective date of registration: 20200922 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |