CN214253936U - Cable for explosion-proof electrical equipment - Google Patents
Cable for explosion-proof electrical equipment Download PDFInfo
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- CN214253936U CN214253936U CN202120468010.3U CN202120468010U CN214253936U CN 214253936 U CN214253936 U CN 214253936U CN 202120468010 U CN202120468010 U CN 202120468010U CN 214253936 U CN214253936 U CN 214253936U
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Abstract
The utility model provides an explosion-proof electric cable for equipment, including three cable cores, the cable core includes copper core, internal shield layer, insulating layer, outer shielding layer and copper strips from inside to outside, still includes fire-retardant filling layer, fire-resistant protective layer, flexible stretch-brace, mitigate layer, armor, explosion-proof layer and explosion-proof cover; the three cable cores are arranged in the fire-resistant protective layer in a triangular mode; the relaxation layer is arranged outside the fire-resistant protective layer; the armor layer is arranged outside the relaxation layer; the explosion-proof layer is arranged outside the armor layer; the explosion-proof sleeve comprises two sleeve bodies which are arranged up and down symmetrically, and the explosion-proof sleeve is sleeved on the explosion-proof layer; the flame-retardant filling layer is arranged between the cable core and the fire-resistant protective layer and between the fire-resistant protective layer and the relaxation layer. The utility model discloses have more excellent performance in aspects such as explosion-proof, corrosion-resistant, reduce copper metal resource's use simultaneously, reduction in production cost.
Description
Technical Field
The utility model belongs to the technical field of wire and cable, concretely relates to explosion-proof cable for electrical equipment.
Background
The wire and cable is used for transmitting electric (magnetic) energy, information and wire products for realizing electromagnetic energy conversion. A wire cable in a broad sense, also referred to as a cable for short, refers to an insulated cable, which can be defined as: an aggregate consisting of; one or more insulated wire cores, and their respective possible coatings, total protective layers and outer jackets, the cable may also have additional conductors without insulation.
The cable used in some harsh environments such as flammable and explosive places and high-corrosion environments not only meets the general requirements of common cables, but also has more excellent performances in explosion resistance, corrosion resistance and the like, and meets the requirements of safety, thereby ensuring the requirements of power transmission or signal transmission. The existing sheath layer made of copper or copper alloy causes a great amount of use of copper metal resources, and the production cost is higher.
SUMMERY OF THE UTILITY MODEL
To prior art's defect, the utility model provides an explosion-proof for electrical equipment cable, it has more excellent performance in explosion-proof, corrosion-resistant etc. aspect, reduces copper metal resource's use simultaneously, reduction in production cost.
The utility model provides an explosion-proof electric cable for equipment, including three cable cores, the cable core includes copper core, internal shield layer, insulating layer, outer shielding layer and copper strips from inside to outside, still includes fire-retardant filling layer, fire-resistant protective layer, flexible stretch-brace, mitigate layer, armor, explosion-proof layer and explosion-proof cover;
the three cable cores are arranged in the fire-resistant protective layer in a triangular mode;
the cross section of the fire-resistant protective layer is rectangular with arc transition, and convex strips are axially arranged at four outer vertex angles of the fire-resistant protective layer;
the flexible stretching strips are axially arranged at four inner top corners of the fire-resistant protective layer;
the relaxation layer is arranged outside the fire-resistant protective layer, and grooves matched with the raised lines are uniformly distributed on the inner side of the relaxation layer;
the armor layer is arranged outside the relaxation layer;
the explosion-proof layer is arranged outside the armor layer;
the explosion-proof sleeve comprises two sleeve bodies which are arranged up and down symmetrically, and the explosion-proof sleeve is sleeved on the explosion-proof layer;
the flame-retardant filling layer is arranged between the cable core and the fire-resistant protective layer and between the fire-resistant protective layer and the relaxation layer.
In the above technical solution, the utility model discloses can also do following improvement.
The preferable technical scheme is characterized in that: the fire-resistant protective layer is made of ceramic silicon rubber.
The preferable technical scheme is characterized in that: the flexible stretching strip is made of resin or rubber, the cross section of the flexible stretching strip is circular, and the flexible stretching strip is arranged at the inner vertex angle of the fireproof protective layer.
The preferable technical scheme is characterized in that: the flexible stretching strip is arranged between the fire-resistant protective layer and the relaxation layer.
The preferable technical scheme is characterized in that: the moderation layer is formed by compounding a mica tape and a glass cloth tape.
The preferable technical scheme is characterized in that: the explosion-proof layer is made of aluminum alloy.
The preferable technical scheme is characterized in that: the sleeve bodies are of arc-shaped structures, the two sleeve bodies wrap the explosion-proof layer, and the two sleeve bodies are connected together.
The preferable technical scheme is characterized in that: one the cover body week side is equipped with the several through-hole, another the cover body week side be equipped with the through-hole corresponding first arch, first arch can be embedded into in the through-hole.
The preferable technical scheme is characterized in that: the inner side of the sleeve body is provided with a plurality of second bulges.
The preferable technical scheme is characterized in that: the flame-retardant filling layer adopts a flame-retardant high-temperature filling rope, and the oxygen index of the flame-retardant high-temperature filling rope is not less than 40%.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up cable core, fire-retardant filling layer, fire-resistant protective layer, flexible brace, mitigate layer, armor, explosion-proof layer and explosion-proof cover, obtain further promotion with the fire-resistant explosion-proof level and the electrical property of cable core, mechanical properties, environmental resistance, the design of dual explosion-proof can be great degree avoid the cable core cable to take place to burst, the flexible setting of stretching the brace is used for improving the inside tensile properties of cable. The installation stability of the mitigating layer and the fire-resistant protective layer is guaranteed through embedding the mitigating layer and the fire-resistant protective layer together, and the internal structure of the cable is more stable. The utility model discloses have more excellent performance in aspects such as explosion-proof, corrosion-resistant, reduce copper metal resource's use simultaneously, reduction in production cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic structural diagram of a cable for explosion-proof electrical equipment according to an embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of a cable for explosion-proof electrical equipment according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a glove body according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of another glove body according to an embodiment of the present invention.
In the figure, the respective symbols have the following meanings:
1. a cable core; 11. a copper core; 12. an inner shield layer; 13. an insulating layer; 14. an outer shield layer; 15. copper strips; 2. a flame retardant filler layer; 3. a refractory protective layer; 31. a convex strip; 4. a flexible stretch-stay; 5. a buffer layer; 51. a groove; 6. an armor layer; 7. an explosion-proof layer; 8. an explosion-proof sleeve; 81. a sleeve body; 811. a through hole; 812. a first protrusion; 82. a second protrusion.
Detailed Description
To further understand the contents, features and functions of the present invention, the following embodiments are illustrated and described in detail as follows:
referring to fig. 1 to 4, the present embodiment provides an explosion-proof electrical equipment cable, including three cable cores 1, where the cable core 1 includes, from inside to outside, a copper core 11, an inner shielding layer 12, an insulating layer 13, an outer shielding layer 14, and a copper strip 15, and the present embodiment further includes a flame-retardant filling layer 2, a fire-resistant protective layer 3, a flexible stretching strip 4, a buffer layer 5, an armor layer 6, an explosion-proof layer 7, and an explosion-proof sleeve 8;
the three cable cores 1 are arranged in the fire-resistant protective layer 3 in a triangular mode;
the cross section of the fire-resistant protection layer 3 is rectangular with arc transition, and convex strips 31 are axially arranged at four outer vertex angles of the fire-resistant protection layer 3;
the flexible stretching strips 4 are axially arranged at four inner top corners of the fire-resistant protective layer 3;
the relaxation layer 5 is arranged outside the fire-resistant protection layer 3, and grooves 51 matched with the convex strips 31 are uniformly distributed on the inner side of the relaxation layer 5;
the armor layer 6 is arranged outside the relaxation layer 5;
the explosion-proof layer 7 is arranged outside the armor layer 6;
the explosion-proof sleeve 8 comprises two sleeve bodies 81 which are arranged in an up-down symmetrical mode, and the explosion-proof sleeve 8 is sleeved on the explosion-proof layer 7;
the flame-retardant filling layer 2 is provided between the cable core 1 and the flame-resistant protective layer 3 and between the flame-resistant protective layer 3 and the relaxation layer 5.
This embodiment is through setting up cable core 1, fire-retardant filling layer 2, fire-resistant protective layer 3, flexible brace 4, mitigate layer 5, armor 6, explosion-proof layer 7 and explosion-proof cover 8, makes the fire-resistant explosion-proof grade of cable core 1, mechanical properties, environmental resistance obtain further promotion, and the design of dual explosion-proof can the great degree avoid the cable to take place to burst, and the flexible setting of stretching the brace 4 is used for improving the inside tensile properties of cable. The installation stability of the relaxation layer 5 and the fire-resistant protection layer 3 is ensured by embedding the relaxation layer 5 and the fire-resistant protection layer 3 together, so that the internal structure of the cable is more stable.
The inner shielding layer 12 and the outer shielding layer 14 in this embodiment are both semiconductor shielding layers made of polyolefin and carbon black conductive composite materials; the insulating layer 13 is made of polyvinyl chloride.
Referring to fig. 1, the refractory protective layer 3 is made of ceramic silicone rubber.
The ceramic silicon rubber material has the basic characteristic of good elasticity of silicon rubber at normal temperature, has the advantages of no toxicity, no odor, high and low temperature resistance, ozone aging resistance, weather aging resistance and excellent electrical insulation performance, also has the good processing performance of common high-temperature silicon rubber, and can keep the state of a flexible cable at about minus 40 ℃ to minus 200 ℃. In flame invasion and attack, when the temperature reached more than 300 degrees, can be by the hard sponge ceramic body of original soft state conversion, the inside cavity that produces of fire protection layer after the sclerosis, be favorable to keeping warm, the sponge ceramic body has apparent fire-resistant and the effect of separation high temperature like this to the inner structure of effectual protection cable does not take place mechanical change and electrical property change, and in addition, the sponge ceramic body can play preliminary explosion-proof effect after the sclerosis.
Referring to fig. 1, the flexible stretching strip 4 is made of resin or rubber, the cross section of the flexible stretching strip 4 is circular, and the flexible stretching strip 4 is arranged at the inner vertex angle of the fire-resistant protective layer 3.
The arc transition of apex angle department of refractory layer 3 forms the groove, through stretching flexible brace 4 setting at the internal apex angle department of refractory layer 3, can make flexible brace 4 stretched fixed, and the holistic stretchability of cable has also been guaranteed to the symmetric distribution simultaneously.
Referring to fig. 1, the flexible stretching strip 4 is disposed between the fire-resistant protective layer 3 and the moderating layer 5.
This arrangement may further increase the stretchability of the cable.
Referring to fig. 1, the moderating layer 5 is formed by compounding a mica tape and a glass cloth tape.
The mica tape and the glass cloth tape are both environment-friendly materials and are not easy to burn.
Referring to fig. 1, the explosion-proof layer 7 is made of an aluminum alloy.
The explosion-proof layer 7 can play an explosion-proof role, and the cable is prevented from bursting.
Referring to fig. 1 to 4, the sheath 81 is an arc-shaped structure, two sheath 81 wrap the explosion-proof layer 7, and the two sheath 81 are connected together.
The explosion-proof sleeve 8 is formed by connecting two sleeve bodies 81, and the explosion-proof cylinder can further prevent the cable from bursting.
Referring to fig. 1 to 4, a plurality of through holes 811 are disposed around one of the sleeve bodies 81, a first protrusion 812 corresponding to the through holes 811 is disposed around the other sleeve body 81, and the first protrusion 812 can be inserted into the through holes 811.
By embedding the first protrusion 812 into the through hole 811, the connection of the two sleeves 81 is more stable, and the installation of the explosion-proof sleeve 8 is more convenient.
Referring to fig. 1 to 4, a plurality of second protrusions 82 are disposed on the inner side of the sheath 81.
When the explosion-proof sleeve 8 is sleeved on the explosion-proof layer 7, the second bulge 82 is directly contacted with the explosion-proof layer 7, and the anti-skid compression effect is achieved.
Referring to fig. 1, the flame-retardant filling layer 2 is made of a flame-retardant high-temperature filling rope, and the oxygen index of the flame-retardant high-temperature filling rope is not less than 40%.
The flame-retardant high-temperature filling rope has good flame retardance and plays a flame-retardant role.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The utility model provides an explosion-proof cable for electrical equipment, includes three cable cores, the cable core is from inside to outside including copper core, internal shield layer, insulating layer, external shield layer and copper strips, its characterized in that: the fire-retardant flexible cable also comprises a fire-retardant filling layer, a fire-resistant protective layer, a flexible stretching strip, a buffer layer, an armor layer, an explosion-proof layer and an explosion-proof sleeve;
the three cable cores are arranged in the fire-resistant protective layer in a triangular mode;
the cross section of the fire-resistant protective layer is rectangular with arc transition, and convex strips are axially arranged at four outer vertex angles of the fire-resistant protective layer;
the flexible stretching strips are axially arranged at four inner top corners of the fire-resistant protective layer;
the relaxation layer is arranged outside the fire-resistant protective layer, and grooves matched with the raised lines are uniformly distributed on the inner side of the relaxation layer;
the armor layer is arranged outside the relaxation layer;
the explosion-proof layer is arranged outside the armor layer;
the explosion-proof sleeve comprises two sleeve bodies which are arranged up and down symmetrically, and the explosion-proof sleeve is sleeved on the explosion-proof layer;
the flame-retardant filling layer is arranged between the cable core and the fire-resistant protective layer and between the fire-resistant protective layer and the relaxation layer.
2. An explosion-proof electrical equipment cable as defined in claim 1, wherein: the fire-resistant protective layer is made of ceramic silicon rubber.
3. An explosion-proof electrical equipment cable as defined in claim 1, wherein: the flexible stretching strip is made of resin or rubber, the cross section of the flexible stretching strip is circular, and the flexible stretching strip is arranged at the inner vertex angle of the fireproof protective layer.
4. A cable for explosion-proof electric equipment according to claim 3, wherein: the flexible stretching strip is arranged between the fire-resistant protective layer and the relaxation layer.
5. An explosion-proof electrical equipment cable as defined in claim 1, wherein: the moderation layer is formed by compounding a mica tape and a glass cloth tape.
6. An explosion-proof electrical equipment cable as defined in claim 1, wherein: the explosion-proof layer is made of aluminum alloy.
7. An explosion-proof electrical equipment cable as defined in claim 1, wherein: the sleeve bodies are of arc-shaped structures, the two sleeve bodies wrap the explosion-proof layer, and the two sleeve bodies are connected together.
8. An explosion-proof electrical equipment cable as defined in claim 7, wherein: one the cover body week side is equipped with the several through-hole, another the cover body week side be equipped with the through-hole corresponding first arch, first arch can be embedded into in the through-hole.
9. An explosion-proof electrical equipment cable as defined in claim 8, wherein: the inner side of the sleeve body is provided with a plurality of second bulges.
10. An explosion-proof electrical equipment cable as defined in claim 1, wherein: the flame-retardant filling layer adopts a flame-retardant high-temperature filling rope, and the oxygen index of the flame-retardant high-temperature filling rope is not less than 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468010.3U CN214253936U (en) | 2021-03-04 | 2021-03-04 | Cable for explosion-proof electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468010.3U CN214253936U (en) | 2021-03-04 | 2021-03-04 | Cable for explosion-proof electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214253936U true CN214253936U (en) | 2021-09-21 |
Family
ID=77727452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120468010.3U Active CN214253936U (en) | 2021-03-04 | 2021-03-04 | Cable for explosion-proof electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214253936U (en) |
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2021
- 2021-03-04 CN CN202120468010.3U patent/CN214253936U/en active Active
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