CN211907004U - Welding type weldless flexible mineral insulated cable - Google Patents
Welding type weldless flexible mineral insulated cable Download PDFInfo
- Publication number
- CN211907004U CN211907004U CN201921708098.0U CN201921708098U CN211907004U CN 211907004 U CN211907004 U CN 211907004U CN 201921708098 U CN201921708098 U CN 201921708098U CN 211907004 U CN211907004 U CN 211907004U
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- CN
- China
- Prior art keywords
- mineral insulated
- flexible mineral
- insulated cable
- weldless
- welded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a welding formula does not have flexible mineral insulated cable of welding seam. The insulated wire cores comprise inner stranded copper conductors and outer insulated tapes, the wrapping tape wraps the insulated wire cores, the filling material is arranged in gaps between the insulated wire cores and the wrapping tape, the metal sheath wraps the wrapping tape, and the protective outer sleeve wraps the metal sheath; the protective outer sleeve is sleeved with a fixing piece. The utility model adopts the technology of the copper strip longitudinal wrapping seamless welding machine to ensure that the cable length is not limited any more by adopting the copper metal sheath with the prick lines and the inorganic insulating material; convenient transportation, installation and laying, high fire resistance and no toxicity during combustion.
Description
Technical Field
The utility model relates to a welding formula does not have flexible mineral insulated cable of welding seam. Belongs to the technical field of cables.
Background
Mineral insulated cables are classified into rigid mineral insulated cables and flexible mineral insulated cables according to their kinds.
The rigid mineral insulated cable adopts a seamless bobbin as a copper sheath, a magnesium oxide porcelain cylinder is poured, a copper conductor is inserted into the magnesium oxide porcelain cylinder, and thus a product with a desired specification is manufactured through continuous drawing of equipment, and then the cable is formed through annealing treatment. Thus the copper sheath can be used as a grounding wire. But the cable so produced is of limited length.
The existing flexible mineral insulated cable is inconvenient to transport, install and lay, has low fire resistance and can generate toxic gas during combustion.
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide a welding formula does not have flexible mineral insulated cable of welding seam.
The purpose of the utility model is realized like this:
a welding type flexible mineral insulated cable without welding seams is characterized in that: the cable comprises a plurality of insulated wire cores, a filling material, a wrapping tape, a metal sheath and a protective outer sleeve, wherein the insulated wire cores comprise internal stranded copper conductors and external insulating tapes;
the protective outer sleeve is sleeved with a fixing piece, the fixing piece comprises a male part and a female part, the male part and the female part are spliced into a hollow cylinder, and the protective outer sleeve penetrates through the hollow cylinder; the male part is provided with a first fixing groove, the female part is provided with a second fixing groove, and the first fixing groove and the second fixing groove are connected to form an annular groove; the male part is provided with a first convex part and a first concave part, the first convex part is arranged diagonally, the first concave part is arranged diagonally, the female part is provided with a second convex part and a second concave part, the second convex part is arranged diagonally, the second concave part is arranged diagonally, the first convex part is matched with the second concave part for splicing and fixing, and the first concave part is matched with the second convex part for splicing and fixing.
Further, the insulating tape is a fire-resistant mica tape.
Further, the filler is made of an inorganic fiber material.
Further, the filling strips are inorganic fiber fillers.
Further, the metal sheath is a copper sheath with a braid.
Further, the protective outer sleeve is made of a cross-linked polyethylene material.
Further, the annular groove has two channels.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model relates to a welded type does not have flexible mineral insulated cable of welding seam adopts the line of pricking copper metal sheath to add inorganic insulating material, and the copper strips is indulged and is wrapped seamless welding machine technique and make cable length no longer limited, and the longest can reach 2000 meters, saves the intermediate head like this and increases electrical stability, reduces the engineering time and saves the expense. The insulating material of cable adopts inorganic mineral insulating tape to do and winds the package in succession, can strictly control insulation thickness and be difficult for the moisture absorption, and the transportation installation is more convenient with laying, and fire-resistant characteristic is high, and is nontoxic during the burning. The integrity of the circuit can be maintained by burning for 3 hours at the flame temperature of 950 ℃ and 1000 ℃. The cable can be coiled and paid off as common cables; the cable basically does not absorb moisture, and the terminal installation is simple and similar to a common cable.
Drawings
Fig. 1 is a cross-sectional view of the welding type weldless flexible mineral insulated cable of the present invention.
Fig. 2 is a perspective view of the welding type weldless flexible mineral insulated cable of the present invention.
Fig. 3 is a schematic view of the fixing member of the present invention.
Fig. 4 is a schematic view of the male portion of the present invention.
Fig. 5 is a schematic view of the female portion of the present invention.
In the figure:
the twisted copper conductor comprises a twisted copper conductor 1, an insulating tape 2, a filling material 3, a wrapping tape 4, a metal sheath 5, a protective outer sleeve 6, a fixing piece 7, a male part 7.1, a first fixing groove 7.1.1, a first convex part 7.1.2, a first concave part 7.1.3, a female part 7.2, a second fixing groove 7.2.1, a second convex part 7.2.2 and a second concave part 7.2.3.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Referring to fig. 1, the utility model relates to a welded type does not have flexible mineral insulated cable of welding seam, it includes insulating core, stopping 3, band 4, metal sheath 5 and protective sheath 6, insulating core has a plurality ofly, and insulating core includes inside transposition copper conductor 1 and outer insulating tape 2, and band 4 wraps up a plurality of insulating core, and stopping 3 sets up in the gap between a plurality of insulating core and band 4, and metal sheath 5 wraps up on band 4, and protective sheath 6 wraps up on metal sheath 5.
The insulating tape 2 is a fire-resistant mica tape and has excellent high-temperature resistance and combustion resistance. The mica powder tape has good flexibility in a normal state, and is suitable for main fire-resistant insulating layers in various fire-resistant cables. When the smoke is burnt in open fire, the volatilization of harmful smoke is basically avoided.
The filling material 3 is made of inorganic fiber materials, the filling material 3 fills the edge gap of the cable, the roundness of the cable is improved, and the insulating wire core of the stranded structure can be effectively supported to avoid being flattened.
The wrapping belt 4 is used for wrapping and molding the insulated wire core and the filling material 3.
The metal sheath 5 is a copper sheath with a braid.
The protective outer sleeve 6 is a low-smoke halogen-free outer sleeve, is specifically made of cross-linked polyethylene (XLPE) materials, and has low smoke and low heat value during combustion, and does not release hydrogen halide or other acids.
Referring to fig. 2-4, the protective outer cover 6 of the present invention is sleeved with a fixing member 7, the fixing member 7 includes a male portion 7.1 and a female portion 7.2, the male portion 7.1 and the female portion 7.2 are spliced into a hollow cylinder, and the protective outer cover 6 passes through the hollow cylinder; the male part 7.1 is provided with a first fixed groove 7.1.1, the female part 7.2 is provided with a second fixed groove 7.2.1, the first fixed groove 7.1.1 and the second fixed groove 7.2 are connected into an annular groove, and the annular groove is provided with two grooves; the male portion 7.1 is provided with a first convex portion 7.1.2 and a first concave portion 7.1.3, the first convex portion 7.1.2 is arranged diagonally, the first concave portion 7.1.3 is arranged diagonally, the female portion 7.2 is provided with a second convex portion 7.2.2 and a second concave portion 7.2.3, the second convex portion 7.2.2 is arranged diagonally, the second concave portion 7.2.3 is arranged diagonally, the first convex portion 7.1.2 and the second concave portion 7.2.3 are matched, inserted and fixed, the first concave portion 7.1.3 and the second convex portion 7.2.2 are matched, inserted and fixed, the fixing member 7 is sleeved on the protective outer sleeve 6 through matching of the concave portion and the convex portion, and the fixing member 7 is used for hoisting and fixing a cable through an annular groove formed by the first fixing groove 7.1.1 and the second fixing groove 7.2.1.
In the above embodiments, the present invention has been described only by way of example, but various modifications may be made by those skilled in the art after reading the present patent application without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a flexible mineral insulated cable of welded formula solderless which characterized in that: the cable comprises a plurality of insulated wire cores, a filling material, a wrapping tape, a metal sheath and a protective outer sleeve, wherein the insulated wire cores comprise internal stranded copper conductors and external insulating tapes;
the protective outer sleeve is sleeved with a fixing piece, the fixing piece comprises a male part and a female part, the male part and the female part are spliced into a hollow cylinder, and the protective outer sleeve penetrates through the hollow cylinder; the male part is provided with a first fixing groove, the female part is provided with a second fixing groove, and the first fixing groove and the second fixing groove are connected to form an annular groove; the male part is provided with a first convex part and a first concave part, the first convex part is arranged diagonally, the first concave part is arranged diagonally, the female part is provided with a second convex part and a second concave part, the second convex part is arranged diagonally, the second concave part is arranged diagonally, the first convex part is matched with the second concave part for splicing and fixing, and the first concave part is matched with the second convex part for splicing and fixing.
2. A welded weldless flexible mineral insulated cable according to claim 1, characterized in that: the insulating tape is a fire-resistant mica tape.
3. A welded weldless flexible mineral insulated cable according to claim 1, characterized in that: the filler is made of inorganic fiber material.
4. A welded weldless flexible mineral insulated cable according to claim 1, characterized in that: the filling strips are inorganic fiber fillers.
5. A welded weldless flexible mineral insulated cable according to claim 1, characterized in that: the metal sheath is a copper sheath with a braid.
6. A welded weldless flexible mineral insulated cable according to claim 1, characterized in that: the protective outer sleeve is made of cross-linked polyethylene material.
7. A welded weldless flexible mineral insulated cable according to claim 1, characterized in that: the annular groove has two channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921708098.0U CN211907004U (en) | 2019-10-12 | 2019-10-12 | Welding type weldless flexible mineral insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921708098.0U CN211907004U (en) | 2019-10-12 | 2019-10-12 | Welding type weldless flexible mineral insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211907004U true CN211907004U (en) | 2020-11-10 |
Family
ID=73285388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921708098.0U Expired - Fee Related CN211907004U (en) | 2019-10-12 | 2019-10-12 | Welding type weldless flexible mineral insulated cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211907004U (en) |
-
2019
- 2019-10-12 CN CN201921708098.0U patent/CN211907004U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20201110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |