CN109217229A - A kind of novel high-pressure water proof fire retardant transition joint and its application method - Google Patents
A kind of novel high-pressure water proof fire retardant transition joint and its application method Download PDFInfo
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- CN109217229A CN109217229A CN201811220214.4A CN201811220214A CN109217229A CN 109217229 A CN109217229 A CN 109217229A CN 201811220214 A CN201811220214 A CN 201811220214A CN 109217229 A CN109217229 A CN 109217229A
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- 230000007704 transition Effects 0.000 title claims abstract description 32
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000004020 conductor Substances 0.000 claims abstract description 48
- 229910052802 copper Inorganic materials 0.000 claims abstract description 45
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229920001971 elastomer Polymers 0.000 claims abstract description 17
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- 238000009413 insulation Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
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- 238000004804 winding Methods 0.000 claims description 3
- 229910000906 Bronze Inorganic materials 0.000 claims description 2
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- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
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- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
Landscapes
- Cable Accessories (AREA)
Abstract
The present invention relates to a kind of novel high-pressure water proof fire retardant transition joint and its application methods, belong to high-voltage cable joint technical field, which successively includes conductor connecting tube, internal shield metal sleeve, rubber body, the first insulative water-proof filled layer and copper shell from inside to outside；The conductor connecting tube is used to connect the conductor of two sections of cables, and the inside middle of the conductor connecting tube is provided with partition；The outer diameter of the internal shield metal sleeve and the insulating layer outer diameter of cable are identical；Fire-resistant waterproof mixture is inoculated in chamber between the copper shell and the first insulative water-proof filled layer, the second insulative water-proof filled layer is provided with outside the copper shell, the two-port of the copper shell is contraction mouth, the contraction mouth is filled by waterproof clay, is wound with non-flammable adhesive tape outside the second insulative water-proof filled layer or is coated with anti-flaming dope.The present invention also has high anti-flammability, can effectively reduce the generation of fire incident while guaranteeing in terms of waterproofness, leakproofness.
Description
Technical field
The present invention relates to a kind of novel high-pressure water proof fire retardant transition joint and its application methods, belong to high-voltage cable joint skill
Art field.
Background technique
With the development of urbanization process, cable tunnel quantity is more and more, and the cable run in tunnel also gradually increases,
Cable intermediate joint is the weak link in route, is occurred in recent years repeatedly because of the tunnel fire hazard that transition joint failure causes
Accident brings great hidden danger to the safe operation of cable system, and cable intermediate joint waterproof effect currently on the market compared with
It is good, it is bad without flame retardant effect or flame retardant effect, it is easy to cause in this when internal breakdown or external firing occurs indirectly
Head burning, so that fire occur, there are great security risks.
Chinese patent CN207426656U discloses a kind of high-voltage cable middle joint, including oversheath, water blocking tape, liner
Armour ring and circlip；The utility model lined armour ring in oversheath, exterior reinforce circlip, make protective coverings of cable and oversheath it
Between gapless, while water blocking tape is set and is sealed, to play the role of preventing moisture from invading.This application plays well
Waterproof effect, without flame retardant effect.
Chinese patent CN102761093A discloses a kind of transition joint anti-flaming glass fiber reinforced plastics explosion-proof shell, including shell, in
Between connector, shell is that the docking of two semicylinders is wrapped in transition joint, and shell inward at both ends shrinks to form tightening mouth, two
It is wound with adhesive waterproof tape in transition joint at the tightening mouth of end, is filled in shell inner surface and the gap of transition joint outer surface
Fire prevention bag, adhesive waterproof tape are wrapped with fire-proof mud, seal shell and transition joint.The fire prevention bag and fire-proof mud of this application
There is certain flame retardant effect, it is fine that experiment, which shows its effect not,.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of novel high-pressure water proof fire retardant transition joint and its user
Method also has high anti-flammability, effectively reduces the fire band of cable system while guaranteeing in terms of waterproofness, leakproofness
The harm come.
The invention adopts the following technical scheme:
On the one hand, the present invention provides a kind of novel high-pressure water proof fire retardant transition joint, from inside to outside successively includes that conductor connects
Adapter tube, internal shield metal sleeve, rubber body, the first insulative water-proof filled layer and copper shell；
The conductor connecting tube is used to connect the conductors of two sections of cables, the inside middle of the conductor connecting tube be provided with every
It is disconnected；Internal shield metal sleeve is for protecting conductor connecting tube, and the insulating layer of the outer diameter of internal shield metal sleeve and cable
Outer diameter is identical；
Fire-resistant waterproof mixture is inoculated in chamber between the copper shell and the first insulative water-proof filled layer, outside the copper shell
It is provided with the second insulative water-proof filled layer, the two-port of the copper shell is contraction mouth, and the contraction mouth is filled by waterproof clay, kept away
Exempt from moisture entrance, is wound with non-flammable adhesive tape outside the second insulative water-proof filled layer or is coated with anti-flaming dope.
Preferably, the conductor connecting tube is connected by crimp the conductor of two sections of cables.The two sides of conductor connecting tube are inserted into
The conductor of cable ensure that the compactness that conductor is contacted with conductor connecting tube by way of crimping, compared with welding, crimping
Contact resistance is small, avoids the occurrence of the fever phenomenon in use process, while not damaged to cable.
Preferably, the material of the conductor connecting tube is copper, copper alloy, aluminum or aluminum alloy.
Preferably, the material of the internal shield metal sleeve is copper, copper alloy, aluminum or aluminum alloy, can reduce conductor company
The field strength distribution of the contact resistance, uniform conductor junction that connect.
Preferably, the rubber body is that ethylene propylene diene rubber or silicon rubber are prepared, and plays the role of uniform electric field.
Preferably, the first insulative water-proof filled layer and the second insulative water-proof filled layer are with insulation, waterproofness
Can adhesive tape, one of heat-shrink tube or a variety of, play the role of insulative water-proof.
It is further preferred that the fire-resistant waterproof mixture be double-component polyurethane coating or monocomponent polyurethane paint,
Its oxygen index (OI) is not less than 30%, and bicomponent polyurethane coating is usually (to be also low molecule amino first by isocyanate prepolymer
Acid ester polymer) and hydroxy-containing resin two parts composition, acroleic acid polyurethane, alkyd can be divided into according to the difference of hydroxy-containing component
The kinds such as polyurethane, polyester-polyurethane, polyether-polyurethane, epoxy polyurethane, and be filled with wherein organic fire-retardant (phosphorus system,
One of halogen system, nitrogen system are a variety of) and inorganic fire retardants (antimonide, boride, aluminium hydroxide, magnesium hydroxide one kind or
It is a variety of) and high molecular weight flame retardant, there is waterproof, fire-retardant, anti-corrosion and high temperature resistance, play waterproof, fire-retardant effect.
It is further preferred that the copper shell is one of bronze, red copper or brass.
It is further preferred that contraction mouth is filled by waterproof clay, waterproof clay is one of sealant, plays waterproof work
With the charing height of the non-flammable adhesive tape plays waterproof, fire-retardant effect less than 2.5 meters.
On the other hand, the present invention provides a kind of application method of above-mentioned novel high-pressure water proof fire retardant transition joint, feature
It is, comprising:
Two sides cable end is handled first, exposes the cable conductor of predetermined size, then leading two sides cable
It is crimped in body insertion conductor connecting tube, internal shield metal sleeve is inserted on the outside of conductor connecting tube, in internal shield metal
Bush outer sleeve enters rubber body, is externally wrapped with the first insulative water-proof filled layer in rubber body, fills out winding the first insulative water-proof
It fills on the outside of layer and is inserted in copper shell, pour into fire-resistant waterproof mixture from copper shell encapsulating mouth, the second insulative water-proof of filling filling on the outside of copper shell
Layer, copper shell two sides port waterproof clay and the sealing of the second insulative water-proof filled layer, wind outside the second insulative water-proof filled layer
Non-flammable adhesive tape is coated with anti-flaming dope.
The invention has the benefit that
A kind of novel high-pressure water proof fire retardant transition joint of the invention, rubber body are used for uniform electric field；First insulation is anti-
Water filled layer and the second insulative water-proof filled layer have good waterproof effect, are provided with outside the first insulative water-proof filled layer fire-retardant
Waterproofing admixture can effectively prevent fire caused by internal or external burn while preventing moisture from entering；Fire-resistant waterproof
It is provided with copper shell outside mixture, there is waterproof and flame retardant effect, be provided with the second insulative water-proof filled layer outside copper shell, is had good
Waterproof effect.Compared with existing product, structure increases multilayer flashing, flame retarding construction under the premise of sealing waterproof,
Flame retardant property is substantially increased, the generation of fire incident is reduced, effectively reduces the fire bring harm of cable system.Separately
Outside, low manufacture cost of the present invention, construction technology is simple, is suitable for large-scale promotion.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of novel high-pressure water proof fire retardant transition joint of the invention；
Wherein: 1- conductor connecting tube, 2- internal shield metal sleeve, 3- rubber body, 4- the first insulative water-proof filled layer,
5- fire-resistant waterproof mixture, 6- copper shell, 7- the second insulative water-proof filled layer, 8- waterproof clay, 9- non-flammable adhesive tape.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail, but is not limited only to this, what the present invention did not elaborated, presses this field routine techniques.
Embodiment 1:
As shown in Figure 1, a kind of novel high-pressure water proof fire retardant transition joint, including from inside to outside successively include conductor connecting tube
1, internal shield metal sleeve 2, rubber body 3, the first insulative water-proof filled layer 4 and copper shell 6；
Conductor connecting tube 1 is used to connect the conductor of two sections of cables, and the inside middle of conductor connecting tube 1 is provided with partition；It is interior
Portion's shielding metal sleeve 2 is for protecting conductor connecting tube, and the insulating layer outer diameter of the outer diameter of internal shield metal sleeve 2 and cable
It is identical；
It is inoculated with fire-resistant waterproof mixture 5 in chamber between copper shell 6 and the first insulative water-proof filled layer 4, is arranged outside copper shell 6
Have the second insulative water-proof filled layer 7, the two-port of copper shell 6 is contraction mouth, and contraction mouth is filled by waterproof clay 8, avoid moisture into
Enter, is wound with non-flammable adhesive tape 9 outside the second insulative water-proof filled layer 7.
In the present embodiment 1, rubber body 3 is used for uniform electric field；First insulative water-proof filled layer 4 is filled out with the second insulative water-proof
Layer 7 is filled with good waterproof effect, and the first insulative water-proof filled layer 4 is provided with fire-resistant waterproof mixture 5 outside, is preventing moisture
Into while, can effectively prevent fire caused by internal or external burn；It is provided with copper shell 6 outside fire-resistant waterproof mixture 5,
With waterproof and flame retardant effect, it is provided with the second insulative water-proof filled layer 7 outside copper shell 6, there is good waterproof effect.
Embodiment 2:
A kind of novel high-pressure water proof fire retardant transition joint, structure is as described in Example 1, the difference is that conductor connecting tube 1
It is connected by crimp the conductor of two sections of cables.The conductor of the two sides insertion cable of conductor connecting tube 1, is guaranteed by way of crimping
The compactness that conductor is contacted with conductor connecting tube 1.
Embodiment 3:
A kind of novel high-pressure water proof fire retardant transition joint, structure is as described in Example 1, the difference is that conductor connecting tube 1
Material be copper, the material of internal shield metal sleeve 2 is also copper.
Embodiment 4:
A kind of novel high-pressure water proof fire retardant transition joint, structure is as described in Example 1, the difference is that rubber body 3 is
Silicon rubber is prepared, and plays the role of uniform electric field.First insulative water-proof filled layer 4 and the second insulative water-proof filled layer 7 are
For the adhesive tape with insulation, waterproof performance, play the role of insulative water-proof.
Embodiment 5:
A kind of novel high-pressure water proof fire retardant transition joint, structure is as described in Example 1, the difference is that fire-resistant waterproof is mixed
Close object 5 be double-component polyurethane coating in flame retardant type polyester polyurethane coating, oxygen index (OI) be not less than 30%, play waterproof,
Fire-retardant effect；Copper shell 6 is brass；
Contraction mouth is filled by waterproof clay 8, plays waterproof action, and the charing height of non-flammable adhesive tape 9 is played less than 2.5 meters
Waterproof, fire-retardant effect.
Embodiment 6:
A kind of application method of novel high-pressure water proof fire retardant transition joint, comprising:
Two sides cable end is handled first, exposes the cable conductor of predetermined size, then leading two sides cable
It is crimped in body insertion conductor connecting tube 1, internal shield metal sleeve 2 is inserted on the outside of conductor connecting tube 1, in internal shield gold
Belong to and be inserted in rubber body 3 outside sleeve 2, be externally wrapped with the first insulative water-proof filled layer 4 in rubber body 3, insulate in winding first
It is inserted in copper shell 6 on the outside of waterproof filled layer 4, pours into fire-resistant waterproof mixture 5 from 6 encapsulating mouth of copper shell, filling second is exhausted on the outside of copper shell 6
Edge waterproof filled layer 7, copper shell 6 two sides port waterproof clay 8 and the sealing of the second insulative water-proof filled layer 7, it is anti-in the second insulation
Non-flammable adhesive tape 9 is wound outside water filled layer 7.
Comparative example 1:
A kind of common water proof fire retardant transition joint is inoculated in the chamber between copper shell and the first insulative water-proof filled layer non-
Flame retardant type polyester polyurethane coating, other structures are same as Example 5.
Waterproofness and anti-flammability test are carried out to embodiment 5 and comparative example 1, obtain data, as shown in table 1:
Table 1: 1 performance test contrast table of embodiment 5 and comparative example
As known from Table 1, compared to comparative example 1, the embodiment of the present invention 5 is while guaranteeing good waterproofness, significantly
Its anti-flammability is improved, the generation of fire incident can be effectively reduced.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of novel high-pressure water proof fire retardant transition joint, which is characterized in that from inside to outside successively include conductor connecting tube, inside
Shield metal sleeve, rubber body, the first insulative water-proof filled layer and copper shell；
The conductor connecting tube is used to connect the conductor of two sections of cables, and the inside middle of the conductor connecting tube is provided with partition；
The outer diameter of the internal shield metal sleeve and the insulating layer outer diameter of cable are identical；
It is inoculated with fire-resistant waterproof mixture in chamber between the copper shell and the first insulative water-proof filled layer, is arranged outside the copper shell
There is the second insulative water-proof filled layer, the two-port of the copper shell is contraction mouth, and the contraction mouth is filled by waterproof clay, described the
It is wound with non-flammable adhesive tape outside two insulative water-proof filled layers or is coated with anti-flaming dope.
2. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that the conductor connecting tube is logical
Over-voltage connects the conductor of two sections of cables in succession.
3. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that the conductor connecting tube
Material is copper, copper alloy, aluminum or aluminum alloy.
4. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that the internal shield metal
The material of sleeve is copper, copper alloy, aluminum or aluminum alloy.
5. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that the rubber body is three
First EP rubbers or silicon rubber are prepared.
6. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that first insulative water-proof
Filled layer and the second insulative water-proof filled layer are to have one of insulation, the adhesive tape of waterproof performance, heat-shrink tube or a variety of.
7. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that the fire-resistant waterproof mixing
Object is double-component polyurethane coating or monocomponent polyurethane paint, and oxygen index (OI) is not less than 30%.
8. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that the copper shell be bronze,
One of red copper or brass.
9. novel high-pressure water proof fire retardant transition joint according to claim 1, which is characterized in that the charcoal of the non-flammable adhesive tape
Change height less than 2.5 meters.
10. a kind of application method of novel high-pressure water proof fire retardant transition joint described in any one of claim 1-9, feature
It is, comprising:
Two sides cable end is handled first, exposes the cable conductor of predetermined size, then inserts the conductor of two sides cable
Enter in conductor connecting tube and crimp, internal shield metal sleeve is inserted on the outside of conductor connecting tube, in internal shield metal sleeve
It is inserted in rubber body outside, is externally wrapped with the first insulative water-proof filled layer in rubber body, is winding the first insulative water-proof filled layer
Copper shell is inserted in outside, is poured into fire-resistant waterproof mixture from copper shell encapsulating mouth, is filled the second insulative water-proof filled layer, copper on the outside of copper shell
Shell two sides port waterproof clay and the sealing of the second insulative water-proof filled layer, wind fire retardant glue outside the second insulative water-proof filled layer
Band is coated with anti-flaming dope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811220214.4A CN109217229B (en) | 2018-10-19 | 2018-10-19 | High-pressure waterproof flame-retardant intermediate joint and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811220214.4A CN109217229B (en) | 2018-10-19 | 2018-10-19 | High-pressure waterproof flame-retardant intermediate joint and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN109217229A true CN109217229A (en) | 2019-01-15 |
| CN109217229B CN109217229B (en) | 2021-02-09 |
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| CN201811220214.4A Active CN109217229B (en) | 2018-10-19 | 2018-10-19 | High-pressure waterproof flame-retardant intermediate joint and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749718A (en) * | 2020-05-21 | 2020-10-09 | 大禹伟业(北京)国际科技有限公司 | Waterproof technology for tunnel construction |
| CN113241719A (en) * | 2021-05-13 | 2021-08-10 | 国网北京市电力公司电力建设工程咨询分公司 | Waterproof and explosion-proof high-voltage cable intermediate joint and use method thereof |
| CN113241720A (en) * | 2021-05-13 | 2021-08-10 | 特变电工昭和（山东）电缆附件有限公司 | Explosion-proof device for high-voltage cable intermediate joint and use method thereof |
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| CN113241720A (en) * | 2021-05-13 | 2021-08-10 | 特变电工昭和（山东）电缆附件有限公司 | Explosion-proof device for high-voltage cable intermediate joint and use method thereof |
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