CN208737901U - A kind of self-bearing strengthening compensating cable used for nuclear power station - Google Patents

Abstract

The utility model discloses a kind of self-bearing strengthening compensating cable used for nuclear power station, including insulated wire cores and shielding line group, insulated wire cores successively include leading body from the inside to the outside, the interior flame retardant coating of calcinated type mica tape, the outer flame retardant coating of calcinated type mica tape, inner insulating layer and external insulation layer, two insulated wire cores pair twists constitute twisted pair wire group, shielding line group successively includes twisted pair wire group from the inside to the outside, interior wrapping layer and internal shield, several shielding line groups are twisted into cable core, cable core gap setting filled layer, filled layer is internally provided with tensile layer, outer wrapping layer is successively enclosed on cable core from the inside to the outside, sheath, external shielding layer, flame-retardant layer and outer jacket.The utility model in addition to it is excellent bear, the characteristics such as warp resistance performance, while capability of resistance to radiation is strong, insulation and excellent fire retarding performance, flexibility is good, and has good shielding properties, and Cable Bending Radius is bigger, it is easy for construction, it can adapt to the work of nuclear power station harsh environment, long service life.

Description

A kind of self-bearing strengthening compensating cable used for nuclear power station

Technical field

The utility model belongs to technical field of electric wires and cables, and in particular to a kind of self-bearing strengthening used in nuclear power station compensation electricity Cable.

Background technique

Nuclear power as a kind of clean energy resource, for meet China Power demand, Optimization of Energy Structure, reduce environmental pollution, Promote economical energy resources sustainable development that there is own strategic significance.Cable run system as nuclear power station " blood vessel " and " nerve " System plays very important effect, and the key element of safety in terms of the normal operation of nuclear power station and safe shutdown.Nuclear power Stand field of employment condition it is harsher, it is desirable that cables of nuclear power will not only have a general characteristic of common cable, but also need With the performance that cracking resistance, low cigarette, Halogen, fire-retardant, service life are long, also to have it is specific environment resistant, such as radiation hardness, resistance to LOCA Property.Domestic many enterprises are researched and developed, and using traditional steel band or wire armoring, just bear the pulling force of cable, so not only The own wt for increasing cable also adds the outer diameter of cable, is not easy to worker and installs, and due to meeting after cable installation Easily cause electromagnetic radiation pollution.

Summary of the invention

According to the above-mentioned deficiencies of the prior art, technical problem to be solved in the utility model is to propose that a kind of self-bearing type adds Strong type compensating cable used for nuclear power station, be dedicated to solve background technique in whole issue or one of.

In order to solve the above-mentioned technical problem, a kind of the technical solution adopted in the utility model are as follows: self-bearing strengthening nuclear power It stands and uses compensating cable, including insulated wire cores and shielding line group, the insulated wire cores successively include leading body, interior fire resisting from the inside to the outside Layer, outer flame retardant coating, inner insulating layer and external insulation layer, two insulated wire cores pair twists constitute twisted pair wire group, the shielding line group It include successively from the inside to the outside twisted pair wire group, interior wrapping layer and internal shield, several described shielding line groups are twisted into cable core, described Cable core gap setting filled layer, the filled layer are internally provided with tensile layer, the cable core periphery be successively enclosed with outer wrapping layer, Sheath, external shielding layer, flame-retardant layer and outer jacket, the interior flame retardant coating and outer flame retardant coating are calcinated type mica tape, the calcining Type mica tape two sides are provided with organic siliconresin gluing glass fabric strengthening course.

Preferably, the leading body is that more alloy wires are twisted.

Preferably, the inner insulating layer is ethylene propylene rubber insulation material, and external insulation layer is the low cigarette polyene of irradiation crosslinking halogen-free Hydrocarbon insulating materials.

Preferably, the inner insulating layer and external insulation layer thickness proportion are 6:4.

Preferably, the internal shield, external shielding layer are that copper wire and aramid yarn Co-knit form, the internal shield, The count of external shielding layer is not less than 85%.

Preferably, the filled layer is halogen-free low-smoke high-flame glass fiber rope.

Preferably, the outer wrapping layer and flame-retardant layer are halogen-free low-smoke high-flame twining package tapes.

Preferably, the tensile layer is that multiply fiber composite core twists again, intensity >=2200MPa of the tensile layer.

Preferably, the sheath, outer jacket are irradiation crosslinking halogen-free low-smoke flame-proof polyolefin materials.

The utility model beneficial effect is:

1. the utility model leading body is twisted using more alloy wires, the flexibility of cable is improved, reduces installation Bending radius when operation.

2. interior flame retardant coating and outer flame retardant coating are calcinated type mica tapes in the utility model, calcinated type mica tape two sides are respectively provided with There is organic siliconresin gluing glass fabric strengthening course, calcinated type mica tape is connected with strengthening course, whole stretch-proof in two sides up and down Intensity is high, and adhesive structure is reliable and stable.

3. inner insulating layer is ethylene propylene rubber insulation material in the utility model, it is ensured that the insulation performance of cable and be not likely to produce Permanent deformation, it is outer to be extruded with irradiation crosslinking halogen-free low-smoke flame-proof polyolefin external insulation layer, it is ensured that the flame retardant property of cable, it is interior exhausted Edge layer and external insulation layer thickness proportion are 6:4, while meeting the insulation performance and flame retardant property of cable, and that improves cable uses the longevity Life.

4. the fiber composite enhancing tensile layer that the utility model is constituted using fiber composite core replaces steel-tape armouring, due to multiple The intensity for closing core is much higher than the intensity of steel wire, and the specific gravity of composite core only has the 1/4 of steel wire, and this reduces the ontologies of cable Weight improves the tensile strength of whole cable.

5. fiber composite enhancing tensile layer is set to inside filled layer by the utility model, the outer diameter of cable is reduced, just In installation, while also ensuring the warp resistance performance of cable.

6. the utility model internal shield, external shielding layer are that copper wire and aramid yarn Co-knit form, screen is not only acted as The effect covered, and play a dual role of supplement reinforce tension, have, at the same with steel-tape armouring and steel wire winding armouring It compares, there is excellent bending property.

7. the utility model in addition to it is excellent bear, the characteristics such as warp resistance performance, while capability of resistance to radiation is strong, insulation And excellent fire retarding performance, flexibility is good, and has good shielding properties, and Cable Bending Radius is bigger, and it is easy for construction, it can The work of nuclear power station harsh environment is adapted to, long service life can be widely applied to that nuclear power station is mating to use wire and cable.

Detailed description of the invention

Content expressed by this specification attached drawing and the label in figure are briefly described below:

Fig. 1 is the structural schematic diagram of compensating cable in specific embodiment of the present invention.

In figure: the outer flame retardant coating of flame retardant coating, 3- in 1- alloy conductor, 2-, 4- inner insulating layer, 5- external insulation layer, 6- wrapping layer, 7- shielded layer, 8- filled layer, 9- tensile layer, 10- wrapping layer, 11- sheath, 12- shielded layer, 13- flame-retardant layer, 14- outer jacket.

Specific embodiment

Below by the description to embodiment, the shape of for example related each component of specific embodiment of the present utility model Shape, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle, manufacturing process and operation Application method etc., is described in further detail, to help those skilled in the art to conceive the utility model of the utility model, Technical solution has more complete, accurate and deep understanding.

A kind of self-bearing strengthening compensating cable used for nuclear power station, including insulated wire cores and shielding line group, insulated wire cores are by interior To outside successively including leading body 1, interior flame retardant coating 2, outer flame retardant coating 3, inner insulating layer 4 and external insulation layer 5, two insulated wire cores pair twists Twisted pair wire group is constituted, shielding line group successively includes twisted pair wire group, interior wrapping layer 6 and internal shield 7, several shieldings from the inside to the outside Line group is twisted into cable core, cable core gap setting filled layer 8, and filled layer 8 is internally provided with tensile layer 9, and fiber composite enhances tension Layer 9 is set to inside filled layer 8, is reduced the outer diameter of cable, is easily installed, while also ensuring the warp resistance performance of cable, Outer wrapping layer 10, sheath 11, external shielding layer 12, flame-retardant layer 13 and outer jacket 14 are successively enclosed on cable core from the inside to the outside, it is interior Flame retardant coating 2 and outer flame retardant coating 3 are calcinated type mica tapes, and calcinated type mica tape two sides are provided with organic siliconresin gluing glass fibers Cloth strengthening course is tieed up, the calcinated type mica tape strengthening course that two sides connect up and down, whole tensile strength is high, and adhesive structure stabilization can It leans on；Leading body 1 is that more alloy wires are twisted, and improves the flexibility of cable, reduces bending radius when installation and operation, is closed Smooth, rounding, impulse- free robustness, tin-free layer is answered to scrape to injure and fall off in spun gold surface；Inner insulating layer 4 is ethylene propylene rubber insulation material, it is ensured that The insulation performance of cable and it is not likely to produce permanent deformation, external insulation layer 5 is the low cigarette crosslinked polyolefin insulating material of irradiation crosslinking halogen-free, really The flame retardant property of cable is protected, inner insulating layer 4 and 5 thickness proportion of external insulation layer are 6:4, while meeting the insulation performance and resistance of cable Performance is fired, the service life of cable is improved；Wrapping layer 6 selects polyester belt two superimposed wrapped；Internal shield 7, external shielding layer 12 It is formed for copper wire and aramid yarn Co-knit, and count is not less than 85%, not only acts as the effect of shielding in this way, and Play a dual role of supplement and reinforce tension, have, while compared with steel-tape armouring and steel wire winding armouring, has excellent Bending property；Filled layer 8 is halogen-free low-smoke high-flame glass fiber rope, guarantees the flame retardant property of cable；Tensile layer 9 is multiply fiber Composite core twists again, intensity >=2200MPa of tensile layer 9, enhances tensile layer 9 using the fiber composite that fiber composite core is constituted Instead of steel-tape armouring, since the intensity of composite core is much higher than the intensity of steel wire, and the specific gravity of composite core only has the 1/4 of steel wire, this Sample just reduces this body weight of cable, improves the tensile strength of whole cable；Outer wrapping layer 10 and flame-retardant layer 13 are choosings It is wrapped with halogen-free low-smoke high-flame twining package tape two superimposed；Sheath 11, outer jacket 14 are to select the low cigarette of irradiation crosslinking halogen-free Flame-retardant polyolefin sheathed material extrudes structure.

The utility model replaces steel-tape armouring using the tensile layer of fiber composite core, since the intensity of composite core is much higher than steel The intensity of silk, and the specific gravity of composite core only has the 1/4 of steel wire, this reduces this body weights of cable, improve whole electricity The tensile strength of cable, in addition to it is excellent bear, the characteristics such as warp resistance performance, while capability of resistance to radiation is strong, insulation and fire resisting It haveing excellent performance, flexibility is good, and has good shielding properties, and Cable Bending Radius is bigger, and it is easy for construction, it can adapt to core The work of power station harsh environment, long service life can be widely applied to that nuclear power station is mating to use wire and cable.

The utility model is exemplarily described above, it is clear that the utility model implements not by aforesaid way Limitation, as long as not using the method concept of the utility model and the improvement of various unsubstantialities that technical solution carries out, or not It is improved that the conception and technical scheme of the utility model are directly applied into other occasions, in the protection model of the utility model Within enclosing.The protection scope of the utility model should be determined by the scope of protection defined in the claims.

Claims (9)

1. a kind of self-bearing strengthening compensating cable used for nuclear power station, including insulated wire cores and shielding line group, it is characterised in that: described Insulated wire cores successively include leading body (1), interior flame retardant coating (2), outer flame retardant coating (3), inner insulating layer (4) and external insulation from the inside to the outside Layer (5), two insulated wire cores pair twists constitute twisted pair wire groups, the shielding line group successively include from the inside to the outside twisted pair wire group, Interior wrapping layer (6) and internal shield (7), several described shielding line groups are twisted into cable core, the cable core gap setting filled layer (8), the filled layer (8) is internally provided with tensile layer (9), and the cable core periphery is successively enclosed with outer wrapping layer (10), interior shield Layer (11), external shielding layer (12), flame-retardant layer (13) and outer jacket (14), the interior flame retardant coating (2) and outer flame retardant coating (3) are calcinings Type mica tape, calcinated type mica tape two sides are provided with organic siliconresin gluing glass fabric strengthening course, the interior screen Cover layer (7), external shielding layer (12) is that copper wire and aramid yarn Co-knit form.

2. a kind of self-bearing strengthening compensating cable used for nuclear power station according to claim 1, it is characterised in that: described leading Body (1) is that more alloy wires are twisted.

3. a kind of self-bearing strengthening compensating cable used for nuclear power station according to claim 1, it is characterised in that: described interior exhausted Edge layer (4) is ethylene propylene rubber insulation material, and external insulation layer (5) is the low cigarette crosslinked polyolefin insulating material of irradiation crosslinking halogen-free.

4. according to claim 1 or a kind of self-bearing strengthening compensating cable used for nuclear power station described in 3, it is characterised in that: institute It states inner insulating layer (4) and external insulation layer (5) thickness proportion is 6:4.

5. a kind of self-bearing strengthening compensating cable used for nuclear power station according to claim 1, it is characterised in that: the interior screen Cover layer (7), the count of external shielding layer (12) is not less than 85%.

6. a kind of self-bearing strengthening compensating cable used for nuclear power station according to claim 1, it is characterised in that: the filling Layer (8) is halogen-free low-smoke high-flame glass fiber rope.

7. a kind of self-bearing strengthening compensating cable used for nuclear power station according to claim 1, it is characterised in that: it is described it is outer around Covering (10) and flame-retardant layer (13) are halogen-free low-smoke high-flame twining package tapes.

8. a kind of self-bearing strengthening compensating cable used for nuclear power station according to claim 1, it is characterised in that: the tension Layer (9) is that multiply fiber composite core twists again, intensity >=2200MPa of the tensile layer (9).

9. a kind of self-bearing strengthening compensating cable used for nuclear power station according to claim 1, it is characterised in that: the interior shield Layer (11), outer jacket (14) are irradiation crosslinking halogen-free low-smoke flame-proof polyolefin materials.