CN209729563U - A kind of nuclear leve instrument cable - Google Patents

Abstract

The utility model discloses a kind of nuclear leve instrument cables, including cable core, the cable core outer wall is enclosed with core sheath, the core sheath outer wall is enclosed with inner sheath, cable filler is filled between the inner sheath and core sheath, the inner sheath outer wall is enclosed with shielded layer, the shielded layer outer wall is enclosed with armor, the armor outer wall is enclosed with oversheath, the core sheath includes the first protective jacket, the first protective jacket inner wall is fixedly connected with insulation sleeve, first protective jacket selects the crosslinked EVA rubber added with fire retardant to be made, the material selection EP rubbers of first insulation sleeve, the oversheath includes the second protective jacket, the second protective jacket inner wall is fixedly connected with the second insulation sleeve, the utility model relates to field of cable technology.A kind of nuclear leve instrument cable, anti-radiation and anti-interference ability is stronger, and high temperature high voltage resistant, is unlikely to deform, stable structure, and use is safer.

Description

A kind of nuclear leve instrument cable

Technical field

The utility model relates to field of cable technology, specially a kind of nuclear leve instrument cable.

Background technique

Cable is usually to be made of the conductor and external insulating protective layer of one or more mutually insulated, by electric power or information The conducting wire at another place is transferred to from one, wires and cables industry is the second largest industry that China is only second to automobile industry, product product Kind Service Efficiency and domestic market share are more than 90%, and worldwide, Chinese gross output value of wire and cable has been more than the U.S., As the in the world first big countries producing electric wires and cables, with the rapid development of china's wire and cable industry, creation of new enterprise quantity is not Disconnected to rise, industry overall technology level is largely increased, and the growth of China's economic continuously and healthily provides huge for cable products The big market space, the strong temptation of Chinese market, so that sight is all focused on Chinese market by the world, it is short reforming and opening up to the outside world Short decades, Chinese cable manufacturing industry, which is formed by huge production capacity, allows the world to regard with special esteem, with China electric power industry, The continuous expansion of the industry sizes such as data communication industry, urban track traffic industry, car industry and shipbuilding, the demand to wire and cable Also it will increase rapidly, there are also huge development potentialities for the following wire and cable industry.The cable of nuclear power station is usually required in high spoke at present It penetrates, is used in the annular of high temperature, use environment is more complex, higher to the intensity requirement of cable, it is desirable that cable needs higher anti- Radiate anti-interference ability.

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides a kind of nuclear leve instrument cable, solves current nuclear power station Cable usually require to radiate in height, use in the annular of high temperature, use environment is more complex, higher to the intensity requirement of cable, It is required that cable needs the problem of higher radiation protection anti-interference ability.

Utility model content

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of nuclear leve instrument cable, packet Cable core is included, the cable core outer wall is enclosed with core sheath, and the core sheath outer wall is enclosed with inner sheath, described interior Cable filler is filled between sheath and core sheath, the inner sheath outer wall is enclosed with shielded layer, the shielded layer outer wall It is enclosed with armor, the armor outer wall is enclosed with oversheath.

Preferably, the core sheath includes the first protective jacket, and the first protective jacket inner wall is fixedly connected with insulation sleeve.

Preferably, first protective jacket selects the crosslinked EVA rubber added with fire retardant to be made, first insulation sleeve Material selection EP rubbers.

Preferably, the oversheath includes the second protective jacket, and the second protective jacket inner wall is fixedly connected with the second insulation Set.

Preferably, second protective jacket selects the ethane-acetic acid ethyenyl ester added with fire retardant to be made, and described second absolutely Edge set internal layer and outer layer select EP rubbers and crosslinked EVA rubber to be made respectively.

Preferably, the material of the cable filler is glass fibre, and the shielded layer selects tinned copper wire braiding to be made.

(3) beneficial effect

The utility model provides a kind of nuclear leve instrument cable.Have it is following the utility model has the advantages that

(1), a kind of nuclear leve instrument cable is enclosed with core sheath by cable core outer wall, outside the core sheath Wall is enclosed with inner sheath, and cable filler is filled between the inner sheath and core sheath, and the inner sheath outer wall is enclosed with Shielded layer, the shielded layer outer wall are enclosed with armor, and the armor outer wall is enclosed with oversheath, and the oversheath includes the One protective jacket, the first protective jacket inner wall are fixedly connected with insulation sleeve, and protective jacket is provided with outside cable and core, and And the protective jacket outside Exterior cable and core selects different radiation protection tamper resistant materials to be made, and can obstruct the kind for absorbing radiation Class is more, so that the radiation resistance of cable and anti-interference ability are stronger.

(2), a kind of nuclear leve instrument cable includes the first protective jacket, the first protective jacket inner wall by core sheath It is fixedly connected with insulation sleeve, first protective jacket selects the crosslinked EVA rubber added with fire retardant to be made, first insulation The material selection EP rubbers of set, such material are not likely to produce permanent deformation in high temperature and pressure test, it is ensured that cable is just Normal structure, more safer than plastic materials, the oversheath includes the second protective jacket, and the second protective jacket inner wall is fixedly connected There is the second insulation sleeve, second protective jacket selects the ethane-acetic acid ethyenyl ester added with fire retardant to be made, second insulation Set internal layer and outer layer select EP rubbers and crosslinked EVA rubber to be made respectively, ethane-acetic acid ethyenyl ester material have it is anti-radiation, Chemicals-resistant characteristic, and mechanical and processing performance is more preferable, high temperature resistant, when burning, are not easy to drip, and safety in utilization is more preferable, structure It is more stable.

Detailed description of the invention

Fig. 1 is the utility model cross-sectional structure schematic diagram；

Fig. 2 is the utility model vertical section structure schematic diagram.

In figure: 1 cable core, 2 core sheaths, 3 inner sheaths, 4 cable fillers, 5 shielded layers, 6 armors, 7 oversheaths, 21 first protective jackets, 22 first insulation sleeves, 71 second protective jackets, 72 second insulation sleeves.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of nuclear leve instrument cable, including cable core 1,1 outer wall of cable core is enclosed with core sheath 2, and 2 outer wall of core sheath is enclosed with inner sheath 3, inner sheath 3 and core sheath 2 Between be filled with cable filler 4,3 outer wall of inner sheath is enclosed with shielded layer 5, and 5 outer wall of shielded layer is enclosed with armor 6, armouring 6 outer wall of layer are enclosed with oversheath 7.

Core sheath 2 includes the first protective jacket 21, and 21 inner wall of the first protective jacket is fixedly connected with the first insulation sleeve 22.

First protective jacket 21 selects the crosslinked EVA rubber added with fire retardant to be made, the material of first insulation sleeve 22 EP rubbers is selected, rubber material is not likely to produce permanent deformation in high temperature and pressure test, it is ensured that the normal configuration of cable.

Oversheath 7 includes the second protective jacket 71, and 71 inner wall of the second protective jacket is fixedly connected with the second insulation sleeve 72.

Second protective jacket 71 is selected to be made added with the ethane-acetic acid ethyenyl ester of fire retardant, improve the anti-radiation of cable and The property of chemicals-resistant, and mechanical and processing performance is more preferable, high temperature resistant, when burning, are not easy to drip, 72 internal layer of the second insulation sleeve EP rubbers and crosslinked EVA rubber is selected to be made respectively with outer layer.

The material of cable filler 4 is glass fibre, and shielded layer 5 selects tinned copper wire braiding to be made.

In use, external radiation is transferred to inside cable again after the second protective jacket 71 barrier on oversheath 7 absorbs Absorbing by the first protective jacket 21 barrier on core sheath 2 can avoid radiation effect cable core 1, second on oversheath 7 Protective jacket 71 is not likely to produce permanent deformation after being resistant to high temperature and pressure.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions.By sentence " element limited including one ..., it is not excluded that There is also other identical elements in the process, method, article or apparatus that includes the element ".

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is by appended claims.

Claims (6)

1. a kind of nuclear leve instrument cable, including cable core (1), it is characterised in that: cable core (1) the outer wall package is wired Core sheath (2), core sheath (2) outer wall are enclosed with inner sheath (3), fill out between the inner sheath (3) and core sheath (2) Filled with cable filler (4), inner sheath (3) outer wall is enclosed with shielded layer (5), and shielded layer (5) outer wall is enclosed with armour It fills layer (6), armor (6) outer wall is enclosed with oversheath (7).

2. a kind of nuclear leve instrument cable according to claim 1, it is characterised in that: the core sheath (2) includes first Protective jacket (21), the first protective jacket (21) inner wall are fixedly connected with the first insulation sleeve (22).

3. a kind of nuclear leve instrument cable according to claim 2, it is characterised in that: first protective jacket (21), which is selected, to be added It is made added with the crosslinked EVA rubber of fire retardant, the material selection EP rubbers of first insulation sleeve (22).

4. a kind of nuclear leve instrument cable according to claim 1, it is characterised in that: the oversheath (7) includes second anti- Sheath (71), the second protective jacket (71) inner wall are fixedly connected with the second insulation sleeve (72).

5. a kind of nuclear leve instrument cable according to claim 4, it is characterised in that: second protective jacket (71), which is selected, to be added It is made added with the ethane-acetic acid ethyenyl ester of fire retardant, the second insulation sleeve (72) internal layer and outer layer select EP rubbers respectively It is made with crosslinked EVA rubber.

6. a kind of nuclear leve instrument cable according to claim 1, it is characterised in that: the material of the cable filler (4) For glass fibre, the shielded layer (5) selects tinned copper wire braiding to be made.