CN209543994U - Multi-layer fire-retarded type PVC power cable protective case - Google Patents
Multi-layer fire-retarded type PVC power cable protective case Download PDFInfo
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- CN209543994U CN209543994U CN201920245375.2U CN201920245375U CN209543994U CN 209543994 U CN209543994 U CN 209543994U CN 201920245375 U CN201920245375 U CN 201920245375U CN 209543994 U CN209543994 U CN 209543994U
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- protective case
- fire
- power cable
- type pvc
- layer fire
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Abstract
The utility model relates to multi-layer fire-retarded type PVC power cable protective cases; it includes the first protective case and the second protective case; first protective case is set on the second protective case; edge is provided with several support columns perpendicular to the second protective case direction on first protective case and the second protective case; it is equipped with cavity in support column, is perfused with inertia fire-retardant gas in cavity.The utility model have the effect of multiple-protection it is fire-retardant and using when can arbitrarily cut out without lose safeguard function.
Description
Technical field
The utility model relates to protective case fields, more particularly, to multi-layer fire-retarded type PVC power cable protective case.
Background technique
Cable is made of the conductor and external insulating protective layer of one or more mutually insulated, by electric power or information from one
Place is transferred to the conducting wire at another place.21 century is the information age, is related to electricity consumption in life everywhere, therefore the usage amount of cable is big,
Use scope is wide, and requirement also increases accordingly, and is especially that service life and the safety of cable are particularly important.
A kind of multi-layer fire-retarded type C-PVC electricity is described in the utility model patent file that notification number is CN207200171U
Power cable protection pipe, including protection pipe, the first protective case, the first cavity, the first air inlet, the second protective case, the second cavity,
Two air inlets, connecting tube and regulating valve can pour into carbon dioxide gas in the first cavity and the second cavity by connecting tube
Body, so that it is further as flame-retardant layer that there are also carbon dioxide gas under the double shielding of the first protective case and the second protective case
Flame retardant effect is improved, to play good protecting effect.
But in said structure, user requires to be filled with carbon dioxide gas manually before installation cable every time, then pacifies
Cable is filled, but in actual cable installation process, it is often necessary to cable is suitably cut to conjunction according to the installation situation at scene
Suitable size is installed again, and the gas blanket of such protective case is difficult to realize protecting effect, and inconvenient for use.
Utility model content
The purpose of the utility model is to provide multi-layer fire-retarded type PVC power cable protective cases, can be effectively prevented outside cable
Or the fire behavior occurred in cable is further spread.
The above-mentioned purpose of utility model of the utility model has the technical scheme that multi-layer fire-retarded type
PVC power cable protective case, including the first protective case and the second protective case, first protective case are set in the second protective case
On, along perpendicular to being provided with several support columns, the support on the second protective case on first protective case and the second protective case
It is equipped with cavity in column, is perfused with inertia fire-retardant gas in the cavity.
By using above-mentioned technical proposal, when unexpected fire behavior occurs outside the protective case or in protective case, the first protection
Set or the second protective case directly contact open fire or high temperature plays the first heavy protective action, and then support column discharges the fire-retardant gas of inertia
Body dilutes fire behavior environment, slows down burning velocity, and be arranged since support column is distributed, even if using and installing in the protective case
It is arbitrarily cut out in journey, inertia fire-retardant gas, which will not be revealed, causes gas shield function to be lost, easy to use.
The utility model is further arranged to: the support column is arranged in corrugated tube shape.
By using above-mentioned technical proposal, bellows structure can make support column have flexible support performance, as the guarantor
Sheath when being squeezed will not power cable in injury protection set, avoiding power cable, short circuit is caught fire due to mechanical shock.
The utility model is further arranged to: first protective case is made of silicon rubber, in first protective case
It is provided with several glass fibres.
By using above-mentioned technical proposal, glass fibre can increase the mechanical performances such as the anti-pull property of the first protective case,
The non-toxic and tasteless no sulphur of silicon rubber, it is nonflammable, it will not generate to human body and the harmful gas of environment, have a safety feature, guarantee
Environmental protection is sustainable while service life.
The utility model is further arranged to: the inertia fire-retardant gas is nitrogen, and the support column is equipped with air inlet,
The air inlet is equipped with closing cock, is equipped with the elastic component for driving sealing-plug closing air inlet in the cavity, it is described into
Air-tight rubber strip is fixed on port.
By using above-mentioned technical proposal, needle-like gas nozzle can be inserted into air inlet to empty intra-bladder instillation nitrogen by user
Gas, during extracting needle-like gas nozzle from air inlet, the elastic force of elastic component can drive closing cock mobile towards air inlet, into
And with air-tight rubber strip combined closing air inlet, it is empty that user can coat the further permanent closure of closing glue on air-tight rubber strip
Chamber facilitates subsequent support fixed in the first protective case and the second protective case to simplify the perfusion process of inertia fire-retardant gas
Column.
The utility model is further arranged to: the outer surface of first protective case is provided with spiral flange, described
Scuff-resistant coating is coated on flange.
By using above-mentioned technical proposal, flange can reduce the first protective case and extraneous direct contact area, reduce
Mechanical friction, the auxiliary for being aided with scuff-resistant coating can effectively extend the service life of the first protective case.
The utility model is further arranged to: fireproof covering, the section of the fireproof covering are arranged with outside first protective case
Shape is semi-cylindrical and uses in pairs.
By using above-mentioned technical proposal, fireproof covering can be installed and used locally according to demand, and save the cost simultaneously can be into one
Step improves flame retardant effect, expands the use scope of the protective case.
The utility model is further arranged to: the fireproof covering uses alkali-free glass fibre and organic silica gel composite material system
At.
By using above-mentioned technical proposal, alkali-free glass fibre braiding after refill organic silica gel can have high temperature-proof and
Wear-resisting excellent performance, convenient for extending the service life and recycling of fireproof covering.
The utility model is further arranged to: being fixed between the fireproof covering using rubber buckle.
By using above-mentioned technical proposal, rubber buckles so that fireproof covering is installed as detachable installation, convenient for operation
And it is reused after being conducive to the replacement or movement of fireproof covering.
In conclusion the advantageous effects of the utility model are as follows:
1. can arbitrarily be cut when multi-layer fire-retarded and use；
2. protection intensity can be increased according to use demand.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the support column arrangement schematic diagram of the utility model.
Fig. 3 is the fireproof covering structural schematic diagram of the utility model.
Fig. 4 is the radial cross-section of the utility model.
In figure, the 1, first protective case；11, glass fibre；12, flange；13, scuff-resistant coating；2, the second protective case；3, it supports
Column；31, cavity；32, air inlet；33, elastic component；34, closing cock；35, air-tight rubber strip；4, fireproof covering；41, rubber buckles.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing 1-4.
It referring to Fig.1, is multi-layer fire-retarded type PVC power cable protective case disclosed by the utility model, second including tubulose
Protective case 2 and the first protective case 1 being set in outside the second protective case 2.Along vertical between first protective case 1 and the second protective case 2
2 direction of the second protective case is directly provided with several support columns 3, support column 3 is arranged in corrugated tube shape, and setting is free in support column 3
Chamber 31.Inertia fire-retardant gas selects nitrogen, and the air inlet 32 for nitrogen to be perfused in cavity 31 is provided on support column 3, into
Port 32 is equipped with the closing cock 34 matched with 32 shape of air inlet.Elastic component is fixed with along 32 direction of air inlet in cavity 31
33, elastic component 33 selects spring, and the other end and closing cock 34 of spring are fixed, is fixed with and 34 shape of closing cock on air inlet 32
The air-tight rubber strip 35 matched.
Needle-like gas nozzle is inserted into air inlet 32 by user first, and elastic component 33 is in squeezed state at this time, and closing cock 34
Inside cavity 31, nitrogen is poured in cavity 31 by user by the air pump being connected with needle-like gas nozzle.It, will after perfusion
Needle-like gas nozzle extracts air inlet 32, and the elastic force of elastic component 33 drives closing cock 34 mobile towards 32 direction of air inlet at this time, closing
Air inlet 32, then cooperate the air-tightness for improving cavity 31 with air-tight rubber strip 35.User can be coated on air-tight rubber strip 35
Close glue, permanent closure cavity 31.It realizes the convenient filling of inertia fire-retardant gas, is conducive to support column 3 being fixed on the second guarantor
Between sheath 2 and the first protective case 1.
Since support column 3 is designed in bellows, so its flexible compressive property for having can be in the first protective case 1 and the
It plays a supporting role between two protective cases 2, internal power cable is damaged when avoiding the protective case by mechanical presses or impact, is made
Obtaining internal power cable, short circuit generates electric spark due to damaging collision.When in the protective case or protective case outgoing light a fire feelings when,
Nitrogen in cavity 31 can slow down fire behavior with the air at dilute combustion scene.And first protective case 1 and the second protective case 2 formation
Multiple Protective Structure can still remain with one layer even if the contingency occurred in or beyond the protective case destroys corresponding protective case
Protective case plays safe fire retardation to the end, improves security protection coefficient.Simultaneously because the quantity of support column 3 is several,
It is cut out even if needing to cut in installation protective case or installation cable, fire-retardant gas structure will not be destroyed, guarantee actually makes
Fire-retardant gas in can work normally.
With reference to figure, the first protective case 1 is located at outside the second protective case 2, has on the basis of fire-retardant to service life and intensity
There is higher requirement, so the first protective case 1 is made of silicon rubber, and is internally provided with several glass fibres 11 to increase by the
The anti-pull performance of one protective case 1.The non-toxic and tasteless no sulphur of silicon rubber, it is nonflammable, vulcanization will not be generated meeting with open fire
Gas etc. has a safety feature human body and the harmful gas of environment.And in order to extend the service life of the first protective case 1, first
The outer surface of protective case 1 is provided with spiral flange 12, is coated with scuff-resistant coating 13 on flange 12.Flange 12 can reduce first
Protective case 1 and extraneous direct contact area, reduce mechanical friction, and the auxiliary for being aided with scuff-resistant coating 13 can effectively extend the first guarantor
The service life of sheath 1.
With reference to figure, for the protective value of the further expansion protective case, to expand the scope of application of the protective case, first
Fireproof covering 4 is arranged with outside protective case 1, the cross sectional shape of fireproof covering 4 is semi-cylindrical and uses in pairs, the side of each pair of fireproof covering 4
Rubber buckle 41 is fixed at edge, each pair of fireproof covering 4 is fixed to each other by rubber buckle 41.Fireproof covering 4 is fine using alkali-free glass
Dimension is worked out and the composite material filled with organic silica gel is made, and tension anti-wear effect is good, high heat resistance.User can be according to demand
Part installation fireproof covering 4, and it is easy for assemble or unload, effectively increase protective performance.
The implementation principle of the present embodiment are as follows: when in the second protective case 2 or 1 outgoing of the first protective case light a fire feelings when, first protect
Sheath 1 or the second protective case 2 are spread as first of fire-retardant defence line prevention fire behavior, when 2 quilt of the first protective case 1 or the second protective case
After destruction, the inertia fire-retardant gas stored in the cavity 31 of support column 3 dilutes live air, and the combustion-supporting gases such as starvation subtract
Small baked wheaten cake speed and range can be sheared arbitrarily according to use demand when installing and using the protective case, will not be because of destruction branch
3 structure of dagger and influence gas flame retarding function, it is easy to use while multilayer proofing.
The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this
The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical
Within novel protection scope.
Claims (6)
1. multi-layer fire-retarded type PVC power cable protective case, it is characterised in that: including the first protective case (1) and the second protective case
(2), first protective case (1) is set on the second protective case (2), on first protective case (1) and the second protective case (2)
Along being provided with several support columns (3) perpendicular to the second protective case (2) direction, cavity (31) are equipped in the support column (3), it is described
Inertia fire-retardant gas is perfused in cavity (31).
2. multi-layer fire-retarded type PVC power cable protective case according to claim 1, it is characterised in that: the support column (3)
It is arranged in corrugated tube shape.
3. multi-layer fire-retarded type PVC power cable protective case according to claim 2, it is characterised in that: first protection
Set (1) is made of silicon rubber, is provided with several glass fibres (11) in first protective case (1).
4. multi-layer fire-retarded type PVC power cable protective case according to claim 3, it is characterised in that: the inertia is fire-retardant
Gas is nitrogen, and the support column (3) is equipped with air inlet (32), and the air inlet (32) is equipped with closing cock (34), described
It is equipped with the elastic component (33) for driving sealing-plug closing air inlet (32) in cavity (31), is fixed on the air inlet (32)
Air-tight rubber strip (35).
5. multi-layer fire-retarded type PVC power cable protective case according to claim 4, it is characterised in that: first protection
The outer surface of set (1) is provided with spiral flange (12), is coated with scuff-resistant coating (13) on the flange (12).
6. multi-layer fire-retarded type PVC power cable protective case according to claim 1 or 5, it is characterised in that: described first protects
It is arranged with fireproof covering (4) outside sheath (1), the cross sectional shape of the fireproof covering (4) is semi-cylindrical and uses in pairs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920245375.2U CN209543994U (en) | 2019-02-26 | 2019-02-26 | Multi-layer fire-retarded type PVC power cable protective case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920245375.2U CN209543994U (en) | 2019-02-26 | 2019-02-26 | Multi-layer fire-retarded type PVC power cable protective case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209543994U true CN209543994U (en) | 2019-10-25 |
Family
ID=68274253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920245375.2U Expired - Fee Related CN209543994U (en) | 2019-02-26 | 2019-02-26 | Multi-layer fire-retarded type PVC power cable protective case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209543994U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111791727A (en) * | 2020-08-06 | 2020-10-20 | 郑州电力高等专科学校 | Charging gun protection device and method for new energy charging pile |
| CN112351530A (en) * | 2020-11-03 | 2021-02-09 | 安邦电气股份有限公司 | Explosion-proof flame-retardant electric tracing band |
| CN112599291A (en) * | 2020-12-08 | 2021-04-02 | 朱立怀 | Waterproof distributed instrument cable for safety explosion-proof circuit |
-
2019
- 2019-02-26 CN CN201920245375.2U patent/CN209543994U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111791727A (en) * | 2020-08-06 | 2020-10-20 | 郑州电力高等专科学校 | Charging gun protection device and method for new energy charging pile |
| CN112351530A (en) * | 2020-11-03 | 2021-02-09 | 安邦电气股份有限公司 | Explosion-proof flame-retardant electric tracing band |
| CN112599291A (en) * | 2020-12-08 | 2021-04-02 | 朱立怀 | Waterproof distributed instrument cable for safety explosion-proof circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 |