CN209389666U - Power cable terminal protection pipe nozzle blocking component - Google Patents
Power cable terminal protection pipe nozzle blocking component Download PDFInfo
- Publication number
- CN209389666U CN209389666U CN201920398995.XU CN201920398995U CN209389666U CN 209389666 U CN209389666 U CN 209389666U CN 201920398995 U CN201920398995 U CN 201920398995U CN 209389666 U CN209389666 U CN 209389666U
- Authority
- CN
- China
- Prior art keywords
- protection pipe
- sealing tube
- blocking component
- power cable
- cable terminal
- 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.)
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Links
- 230000000903 blocking Effects 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000002788 crimping Methods 0.000 claims abstract description 5
- 239000011324 bead Substances 0.000 claims description 11
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 229910001256 stainless steel alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 240000003917 Bambusa tulda Species 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 239000004801 Chlorinated PVC Substances 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001488 breeding Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
Abstract
The utility model discloses a kind of power cable terminal protection pipe nozzle blocking components; protection pipe is the insulating sleeve of top end opening; the blocking component includes sealing tube; the outer diameter of sealing tube is less than the internal diameter of protection pipe; annular brace is set in the bottom end of sealing tube; the internal diameter of annular brace is not less than the outer diameter of cable, and annular brace is buckled in cable extroversion plug and provides stress point, and the top of sealing tube is equipped with the crimping of extension to be mounted on the top of protection pipe.When use; sealing tube is mounted on to the top of protection pipe by crimping; then to clogging plug between sealing tube and cable; the stress point of vertical direction is provided to plug by annular brace; to reduce the possibility for plug failure occur; the probability for plug cracking occur, falling off is reduced, the stability and reliability of closure are improved.
Description
Technical field
The utility model belongs to power cable line affiliated facility installing area, more particularly to a kind of power cable terminal
Protection pipe nozzle blocking component.
Background technique
With the continuous development of Chinese society's economy and urban construction, overhead transmission line occupies the valuable soil of urban ground
Ground resource.Meanwhile the continuous improvement that city requires beautification, high voltage power cable become the mainstream power transmission line of city conveying electric energy
Road.In recent years, 35kV and above ultra-high-tension power transmission line are all changed to part by the economically developed most cities in the whole nation
Transmission line of electricity is put cable underground or created using very universal with cable mixed set-up.Overhead line be changed into the place of laying it is most of
Cable terminal pole (tower) or cable terminal station can be used.
Industry regulation about power cable terminal protection pipe has: DL/T5221-2016 " urban electric power cable run design
Technical stipulation " in 4.10.3 requirement: stepped at bar (tower) in cable, the cable of all parts of basseting should be inserted in have it is certain mechanical
The protection pipe of intensity is protected.The protection pipe overall length basseted is no less than 2.5 meters, and single-core cable should use non-magnetic material
Protection pipe made of expecting." state's net transport inspection department is about printing and distributing high-tension cable and channel work in addition, state's net fortune inspection two (2017) No. 104 numbers
The notice of journey Operational preparation and checking and accepting instruction " in Article 21 cable laying should meet it is claimed below: in cable
Into building, tunnel, electric pole, equipment, wall outer surface are led at floor and wall, from channel or pedestrian is easy to connect within doors
Nearby, one section below away from ground level 2m, may have Load-Carrying Equipment moved through above cable section and other may be by machine
The place of tool damage, cable should have the protection pipe of certain mechanical strength or install protective cover additional；34th article of cable laying is checked and accepted
It is required that all nozzles should be blocked tightly, all spare holes should also be blocked, and closure should be tightly reliable, should not have apparent crack and can
The hole seen, blocks up body surfacing, and hole larger part is blocked again after should adding refractory slab.
Cable fixed platform or bracket, lead is generally arranged in cable terminal pole (tower), design scheme under tower body or tower
It is connected on platform to tower head, draws ground segment using protection pipe and wrap up cable.Currently, 35kV and the above major network cable terminal pole are protected
Pillar nozzle plug failure conditions are generally existing, and existing Regulations are to only having specific requirement to fireproof blocking, but for end
Side pole protection pipe nozzle plug does not have specific requirement, and cause to have the following problems in route operation: power cable is in operation one
After the section time, there is terminal pole nozzle plug cracking or fall off, lose nozzle plugging action；It is easy to grow at protection pipe nozzle
Tendril and tree bamboo, increase operation and maintenance intensity and cost；Rainwater is flowed into along nozzle and is protected after nozzle plug falls off or cracks
In pillar and terminal works well, current cable running safety is influenced；There are toys to enter cable protection after nozzle closure failure
The case where pipe, bites and destroys cable, and breeding is fled in pipeline.
Cut cable mainly uses fire proofing CPVC and PE casing protection at existing 35kV and the above major network cable terminal pole
Pipe, protection pipe nozzle directly use inorganic rubber mud or cement mortar to block, 80% or more terminal pole occur plug fall off or
Cracking phenomena.The low frequency oscillation generated by natural environment influence and cable operation and cable operation itself are generated with ambient temperature
Expand with heat and contract with cold cause block generate gap, and plug in nozzle vertical direction without stress point, this is that plug is caused to fail
Principal element.
Utility model content
The purpose of this utility model is that in view of the deficiencies of the prior art, providing one kind keeps plug vertical in nozzle
There is the power cable terminal protection pipe nozzle blocking component of stress point in direction.
This power cable terminal protection pipe nozzle blocking component provided by the utility model, protection pipe are top end opening
Insulating sleeve, the blocking component include sealing tube, and the outer diameter of sealing tube is less than the internal diameter of protection pipe, sets in the bottom end of sealing tube
Annular brace, the internal diameter of annular brace are not less than the outer diameter of cable, and annular brace is buckled in cable extroversion plug and provides stress point,
The top of sealing tube is equipped with the crimping of extension to be mounted on the top of protection pipe.
For the ease of handling, making the sealing tube includes the liner of a pair of semicircle cast positioned opposite.
In a specific embodiment, make the liner single piece, including cylindrical section, supporting section and bead segments, prop up
Support section is located in the bottom end of cylindrical section, and bead segments are located at outside the top of cylindrical section, and bore is formed between bead segments and cylindrical section
Bayonet assigned in the protection thickness of pipe wall.
Preferably, making the supporting section semi-annular, a pair of liner snapping, two supporting sections synthesize the annular
Support.
There is eddy current problem in single-core cable in order to prevent, makes the material stainless steel or aluminium alloy of the liner.
Cable is scratched in order to prevent, is equipped with electro-insulating rubber layer in the inner wall of the supporting section.
When the utility model is used, sealing tube to be mounted on to the top of protection pipe by crimping, then to sealing tube with
Plug is clogged between cable, is provided the stress point of vertical direction to plug by annular brace, is blocked to reduce
The possibility of object failure reduces the probability for plug cracking occur, falling off, improves the stability and reliability of closure.
Detailed description of the invention
Fig. 1 is the use state diagram of one preferred embodiment of the utility model.
Fig. 2 is the vertical view enlarged diagram of this preferred embodiment.
Fig. 3 is the enlarged diagram of liner in Fig. 1.
Illustrate serial number:
1-protection pipe；
2-blocking components,
21-liners, 211-cylindrical sections, 212-supporting sections, 213-bead segments,
22-electro-insulating rubber layers；
3-inorganic rubber mud.
Specific embodiment
As shown in Figure 1 and Figure 2, this power cable terminal protection pipe nozzle blocking component provided in this embodiment, is suitable for
The region of the protection pipe 1 of top end opening is blocked, blocking component 2 includes by the liner of a pair of semicircle cast positioned opposite
21 sealing tubes constituted, the outer diameter of sealing tube is less than the internal diameter of protection pipe, internal diameter is not less than the outer diameter of cable.
As shown in figure 3, liner 21 is single piece, including cylindrical section 211, supporting section 212 and bead segments 213；Supporting section 212
For semi-annular section, in the bottom end of cylindrical section, a pair of liner is positioned opposite when use, and the synthesis of two supporting sections is for closure
The annular brace of object offer stress point.The supporting table of stress point is provided as to plug in actual use, while in order to anti-
Only there is eddy current problem in single-core cable, is stainless steel or aluminium alloy by the material of liner, and be equipped with insulation in the inner wall of supporting section
Rubber layer 22 with prevent using when scratch cable；Bead segments 213 are located at outside the top of cylindrical section, shape between bead segments and cylindrical section
It is matched with the bayonet of 1 wall thickness of protection pipe, at bore so that blocking component to be mounted on to the top of protection pipe.
The present embodiment measures the internal diameter and the outside diameter of cable for needing terminal pole protection pipe at closure first when specifically used, obtains
Take internal diameter and outer diameter required for liner；Then it according to the size of acquisition, selects stainless steel or aluminium alloy to process liner, prevents list
Core cable eddy current problem；Then one layer of electro-insulating rubber will be wrapped at the supporting section of the liner completed the process, prevent at metal bayonet
Cable is scratched, then liner is inserted in protection pipe nozzle, bead segments are stuck in outside the top of protection pipe；Again by ready inorganic rubber
Mud 3 stirs, and inserts in liner after being stirred, and closure can be completed by smoothing out at nozzle.After the completion of closure, given by supporting table
Plug provides the stress point of vertical direction, to reduce the possibility for plug failure occur, reduction plug occurs and cracks, is de-
The probability fallen improves the stability and reliability of closure.
Entire blocking component structure is simple, and closure process is simple and convenient, and plugging effect is reliable and stable, has very important
Meaning and practical engineering value.
Claims (6)
1. a kind of power cable terminal protection pipe nozzle blocking component, protection pipe is the insulating sleeve of top end opening, and feature exists
In: the blocking component includes sealing tube, and the outer diameter of sealing tube is less than the internal diameter of protection pipe, sets annular branch in the bottom end of sealing tube
Support, the internal diameter of annular brace are not less than the outer diameter of cable, and annular brace is buckled in cable extroversion plug and provides stress point, sealing tube
Top be equipped with the crimping of extension to be mounted on the top of protection pipe.
2. power cable terminal protection pipe nozzle blocking component as described in claim 1, it is characterised in that: the sealing tube packet
Include the liner of a pair of semicircle cast positioned opposite.
3. power cable terminal protection pipe nozzle blocking component as claimed in claim 2, it is characterised in that: the liner is whole
Body part, including cylindrical section, supporting section and bead segments, supporting section are located in the bottom end of cylindrical section, and bead segments are located at the top of cylindrical section
End is outer, and the bayonet that bore is matched with the protection thickness of pipe wall is formed between bead segments and cylindrical section.
4. power cable terminal protection pipe nozzle blocking component as claimed in claim 3, it is characterised in that: the supporting section is
Semi-annular, a pair of liner snapping, two supporting sections synthesize the annular brace.
5. power cable terminal protection pipe nozzle blocking component as claimed in claim 2 or claim 3, it is characterised in that: the liner
Material be stainless steel or aluminium alloy.
6. power cable terminal protection pipe nozzle blocking component as claimed in claim 4, it is characterised in that: the supporting section
Inner wall is equipped with electro-insulating rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920398995.XU CN209389666U (en) | 2019-03-27 | 2019-03-27 | Power cable terminal protection pipe nozzle blocking component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920398995.XU CN209389666U (en) | 2019-03-27 | 2019-03-27 | Power cable terminal protection pipe nozzle blocking component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209389666U true CN209389666U (en) | 2019-09-13 |
Family
ID=67852655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920398995.XU Active CN209389666U (en) | 2019-03-27 | 2019-03-27 | Power cable terminal protection pipe nozzle blocking component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209389666U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600156A (en) * | 2020-12-22 | 2021-04-02 | 国家电网有限公司 | Power cable wiring protection device |
-
2019
- 2019-03-27 CN CN201920398995.XU patent/CN209389666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600156A (en) * | 2020-12-22 | 2021-04-02 | 国家电网有限公司 | Power cable wiring protection device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |