CN206237115U - Buried cable sheath grounding box - Google Patents
Buried cable sheath grounding box Download PDFInfo
- Publication number
- CN206237115U CN206237115U CN201621325646.8U CN201621325646U CN206237115U CN 206237115 U CN206237115 U CN 206237115U CN 201621325646 U CN201621325646 U CN 201621325646U CN 206237115 U CN206237115 U CN 206237115U
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- Prior art keywords
- casing
- grounding box
- cable sheath
- tension seat
- protector
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Abstract
The utility model is related to a kind of buried cable sheath grounding box, including seal box, and the cross interconnected portion in seal box and protector installation portion, seal box includes casing and the one-time formed sealant in casing, cross interconnected portion includes the first tension seat that three spacing side by side are set, three are spaced the second tension seat and conductive connection plates being arranged side by side, protector installation portion includes protector, conductive mounting plate and ground joint, one end of protector is connected with the first tension seat, the other end of protector is on conductive mounting plate, and ground joint is connected on casing and with conductive mounting plate.The seal box of above-mentioned buried cable sheath grounding box is included located at one-time formed sealant in casing, improve the sealing water resistance of grounding box, effectively solve the long-standing such as condensation of grounding box, enter damp, the problems such as causing grounding box to fail of intaking, improve power cable line power supply reliability.
Description
Technical field
The utility model is related to cable protection technical field, more particularly to buried cable sheath grounding box.
Background technology
At present, the power cable of 35kV heavies in section power cable and 66kV, 110kV and above is single electricity
Cable, cable metal sheath one end three-phase is interconnected and is grounded, and the other end is earth-free, when lightning wave or internal overvoltage are along cable core
During flowing, the earth-free end of cable metal sheath occurs impulse overvoltage higher, or when system short-circuit fault current flows through electricity
During cable core, the earth-free end of its sheath also occurs line-frequency induction overvoltage very high.Above-mentioned overvoltage may puncture outside cable
Insulating sheath, causes cable metal sheath multipoint earth faults, and normally operation is even greatly decreased electricity to have a strong impact on power cable
Cable service life.Therefore according to power industry standard DL/T401-2002《High voltage power cable selects directive/guide》Regulation must use
Cable protective layer protector is limiting induced voltage and fault overvoltage on power cable metal sheath (protective metal shell).
Traditional, buried cable sheath grounding box is mainly used in the cross interconnected guarantor of high-voltage cable middle joint screen layer
Shield ground connection, is a kind of ground protection mechanical device.But buried cable sheath grounding box is after long-term use, it may appear that solidifying
The problems such as revealing, enter tide, intake causes grounding box to fail, and has influence on power cable line power supply reliability.
Utility model content
Based on this, it is necessary to provide a kind of relatively reliable buried cable sheath grounding box.
A kind of buried cable sheath grounding box, including seal box and the cross interconnected portion in the seal box and
Protector installation portion, the seal box includes casing and the one-time formed sealant in the casing, described cross interconnected
Portion is spaced the second tension seat and conductive connection plates that are arranged side by side including three the first tension seats of spacing side by side setting, three,
Three first tension seats and three second tension seats are interconnected by three conductive connection plates coordinated transpositions respectively,
The protector installation portion includes protector, conductive mounting plate and ground joint, one end of the protector and the described first folder
Line seat connection, the other end of the protector is on the conductive mounting plate, and the ground joint is on the casing
And be connected with the conductive mounting plate.
Cross interconnected portion and protector installation portion, the of cross interconnected portion are provided with above-mentioned buried cable sheath grounding box
One tension seat is connected with the inner wire of coaxial cable and is connected with one end of protector, and the second tension seat is led with the outer of coaxial cable
Body is connected, and then realizes the cross interconnected of threephase cable by conductive connection plates, and the other end of protector is connect by ground connection
Head ground connection, can so prevent over-voltage breakdown protective coverings of cable from insulating, and effectively protect cable, and accommodate cross interconnected portion and peace
The seal box in dress portion includes being improved located at one-shot forming sealant in casing the sealing water resistance of grounding box, effectively solves to connect
Ground case long-standing such as condensation, the problems such as enter tide, water inlet and cause grounding box to fail, improve power cable line and power reliability
Property.
Wherein in one embodiment, the conductive mounting plate is copper plate, and the copper plate surface is coated with one layer of tin.
Wherein in one embodiment, first tension seat is made of an electrically conducting material and surface with second tension seat
It is sprayed with protective paint.
Wherein in one embodiment, the casing is made up of stainless steel material.
Wherein in one embodiment, first tension seat is provided with inner wire holder bolt, second tension seat
It is provided with outer conductor holder bolt.
Wherein in one embodiment, the outer conductor holder bolt and the inner wire holder bolt are by stainless steel
Material is made.
Wherein in one embodiment, the cross interconnected portion also includes the between the casing two lateral walls
One insulation board and the second insulation board, three the first tension seat spacing side by side are located on first insulation board, described in three
On second insulation board, the protector installation portion also includes on the casing second tension seat spacing side by side
3rd insulation board, the conductive mounting plate is on the 3rd insulation board, and the 3rd insulation board, first insulation board
And second insulation board is by the casing top to bottom successively interval setting.
Wherein in one embodiment, also including sealing shroud, the through hole for allowing cable to pass through, institute are offered on the casing
Sealing shroud is stated to be sealed between the through hole and the cable.
Wherein in one embodiment, also including fixed sole, the fixed sole is located at the bottom half.
Wherein in one embodiment, the sealant is made up of ethylene propylene diene rubber.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of cable sheath grounding box in the specific embodiment of the utility model one；
Fig. 2 is the external structure schematic diagram of cable sheath grounding box shown in Fig. 1.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But, the utility model can come real in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
The understanding for opening content is more thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.It is herein to be in term used in the description of the present utility model
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein " and/or " include
The arbitrary and all of combination of one or more related Listed Items.
As shown in Figures 1 and 2, the buried cable sheath grounding box 100 in the specific embodiment of the utility model one includes
Seal box 10 and the cross interconnected portion 30 in seal box 10 and protector installation portion 50, seal box 10 include casing and set
In one-time formed sealant in casing, cross interconnected portion 30 includes the first tension seat 32, three that three spacing side by side are set
The second tension seat 34 and conductive connection plates 36, three the first tension seats 32 and three 34 points of the second tension seats that interval is arranged side by side
Not Tong Guo three coordinated transpositions of conductive connection plates 36 interconnect, protector installation portion 50 include protector 52, conductive mounting version 54 and
Ground joint 56, one end of protector 52 is connected with the first tension seat 32, and the other end of protector 52 is located at conductive mounting plate 54
On, and ground joint 56 is connected on the casing 12 and with conductive mounting plate 54.
Cross interconnected portion 30 and protector installation portion 50 are provided with above-mentioned buried cable sheath grounding box 100, are intersected mutual
First tension seat 32 in connection portion 30 is connected with the inner wire of coaxial cable and is connected with one end of protector 52, the second tension seat 34
It is connected with the outer conductor of coaxial cable, then realizes the cross interconnected of threephase cable, and protector by conductive connection plates 36
52 other end is grounded by ground joint 56, can so prevent over-voltage breakdown protective coverings of cable, effectively protects cable, and
The seal box 10 for accommodating cross interconnected portion 30 and installation portion 50 includes, located at one-time formed sealant in casing, improving grounding box
100 sealing water resistance, effectively solves the long-standing such as condensation of grounding box 100, enters tide, intakes and cause grounding box to fail
The problems such as, improve power cable line power supply reliability.
The through hole 12 for allowing cable to pass through is offered on the casing of seal box 10, buried cable sheath grounding box 100 is also
Including sealing shroud, sealing shroud is sealed between through hole 12 and cable, prevents water, impurity etc. from entering in casing.Specifically, seal box
The 10 a length of 605mm of casing, a width of 540mm, a height of 345mm, compact, it is easy to fill.Preferably, the casing of seal box 10
It is made up of stainless steel material, with preferably decay resistance；Sealant is made up of ethylene propylene diene rubber, with good waterproof
Performance.
Further, the first tension seat 32 and the second tension seat 34 is made of an electrically conducting material and surface is sprayed with protective paint, protects
Vernix prevents conductive material to be corroded, and improves the service life of tension seat；Conductive mounting plate 54 is copper plate, and electric conductivity is good
It is good, and copper plate surface is coated with one layer of tin, improves its decay resistance.
In this specific embodiment, cross interconnected portion 30 also includes the first insulation board 37 between casing opposite sides
With the second insulation board 38, on the first insulation board 37, three the second tension seats 34 are simultaneously for three spacing side by side of the first tension seat 32
On the second insulation board 38, protector installation portion 50 also includes the 3rd insulation board 58 on casing, conduction peace at row interval
Dress plate 54 is on the 3rd insulation board 58, and the 3rd insulation board 58, the first insulation board 37 and the second insulation board 38 are by casing top
Portion to bottom interval setting successively, the first tension seat 32, the second tension seat 34 and conductive mounting plate 54 is arranged in an orderly manner close
In the casing of joint sealing 10, make that the structure of whole grounding box 100 is more reasonable, save space is easy for installation.It is to be appreciated that at it
In his some embodiments, the first insulation board 37 and the second insulation board 38 can be wholely set, the first tension seat 32, the second tension seat
34 and conductive mounting plate 54 can be fixed on by other means in seal box 10, do not limit herein.
Further, the first tension seat 32 is provided with inner wire holder bolt 321, and the second tension seat 34 is provided with outer conductor
Holder bolt 341, by the inner wire and the first tension seat 32 of the connecting coaxial cable of inner wire holder bolt 321, by leading outward
The outer conductor and the second tension seat 34 of the connecting coaxial cable of body holder bolt 341.Preferably, inner wire holder bolt 321 and outer
Conductor holder bolt 341 is made by stainless steel material, improves their corrosion resistance.
Cable sheath grounding box 100 also includes fixed sole (not shown), and fixed sole is located at the casing bottom of seal box 10
Portion, allows casing to be supported well.
In this specific embodiment, the installation steps of cable sheath grounding box 100 are as follows：
It is first according to predetermined size and coaxial cable end is stripped standby, object in cleaning seal box 10, by a stripping
Good coaxial cable pierces into casing by through hole 12, then in turn through the second tension seat 34 and the first tension seat 32, and uses spiral shell
Nail is fixed, and cable core inner wire, then fixed outer conductor are first fixed when fixed；Second cable is worn again after fixing first cable
With the 3rd, then with the 4th cable connection ground joint 36；The through hole 12 on casing is sealed with sealing shroud finally, is being connect
Contracted heat-shrink tube at ground joint 36, two ports of heat-shrink tube is sealed with rubber waterproof band, to carrying out one-shot forming in seal box 10
EPT rubber packing and cover sealed platform cover, complete the installation of buried cable sheath grounding box 100.The buried electrical
Cable sheath grounding box 100 possesses outdoor water-proof, erosion-resisting function, not only solves the cross interconnected protection of used cable sheath
Grounding box outdoor water-proof problem, also solves the problems, such as that the perishable service life in the buried underground of common cable grounding box is short, so
Operation of Electric Systems maintenance cost is reduced, the service life of buried cable sheath grounding box 100 is improve, circuit is also improved
Property safe and reliable to operation.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply 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, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of buried cable sheath grounding box, it is characterised in that the intersection including seal box and in the seal box
Interconnection portion and protector installation portion, the sealant of seal box disposal molding including casing and in the casing, institute
The first tension seats, three that cross interconnected portion sets including three spacing side by side are stated to be spaced the second tension seat for being arranged side by side and lead
Electric connection board, three the first tension seat second tension seats described with three are intersected by three conductive connection plates respectively
Transposition interconnection, the protector installation portion includes protector, conductive mounting plate and ground joint, one end of the protector and institute
The connection of the first tension seat is stated, the other end of the protector is on the conductive mounting plate, and the ground joint is located at institute
State on casing and be connected with the conductive mounting plate.
2. buried cable sheath grounding box according to claim 1, it is characterised in that the conductive mounting plate is red copper
Plate, and the copper plate surface is coated with one layer of tin.
3. buried cable sheath grounding box according to claim 1, it is characterised in that first tension seat with it is described
Second tension seat is made of an electrically conducting material and surface is sprayed with protective paint.
4. buried cable sheath grounding box according to claim 1, it is characterised in that the casing is by stainless steel material
It is made.
5. buried cable sheath grounding box according to claim 1, it is characterised in that first tension seat is provided with
Inner wire holder bolt, second tension seat is provided with outer conductor holder bolt.
6. buried cable sheath grounding box according to claim 5, it is characterised in that the outer conductor holder bolt and
The inner wire holder bolt is made by stainless steel material.
7. buried cable sheath grounding box according to claim 1, it is characterised in that the cross interconnected portion also includes
The first insulation board and the second insulation board between the casing two lateral walls, three the first tension seat spacing side by side
On first insulation board, three the second tension seat spacing side by side are located on second insulation board, the protection
Device installation portion also includes the 3rd insulation board on the casing, and the conductive mounting plate is located on the 3rd insulation board,
And the 3rd insulation board, first insulation board and second insulation board are spaced and set successively by the casing top to bottom
Put.
8. buried cable sheath grounding box according to claim 1, it is characterised in that also including sealing shroud, the case
The through hole for allowing cable to pass through is offered on body, the sealing shroud is sealed between the through hole and the cable.
9. buried cable sheath grounding box according to claim 1, it is characterised in that described also including fixed sole
Fixed sole is located at the bottom half.
10. buried cable sheath grounding box according to claim 1, it is characterised in that the sealant is by ternary second
Third rubber is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325646.8U CN206237115U (en) | 2016-12-05 | 2016-12-05 | Buried cable sheath grounding box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325646.8U CN206237115U (en) | 2016-12-05 | 2016-12-05 | Buried cable sheath grounding box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206237115U true CN206237115U (en) | 2017-06-09 |
Family
ID=58979457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621325646.8U Active CN206237115U (en) | 2016-12-05 | 2016-12-05 | Buried cable sheath grounding box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206237115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | A kind of cross interconnected anti-mistaking of high-tension cable connects cross interconnected case |
| CN110401160A (en) * | 2018-04-24 | 2019-11-01 | 广东电网有限责任公司 | A kind of cross interconnected case based on card slot |
-
2016
- 2016-12-05 CN CN201621325646.8U patent/CN206237115U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365593A (en) * | 2018-04-24 | 2018-08-03 | 广东电网有限责任公司 | A kind of cross interconnected anti-mistaking of high-tension cable connects cross interconnected case |
| CN110401160A (en) * | 2018-04-24 | 2019-11-01 | 广东电网有限责任公司 | A kind of cross interconnected case based on card slot |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |