CN211701437U - Waterproof structure of insulated cable terminal - Google Patents
Waterproof structure of insulated cable terminal Download PDFInfo
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- CN211701437U CN211701437U CN202020295024.5U CN202020295024U CN211701437U CN 211701437 U CN211701437 U CN 211701437U CN 202020295024 U CN202020295024 U CN 202020295024U CN 211701437 U CN211701437 U CN 211701437U
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- section
- sheath
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- connecting section
- sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000004831 Hot glue Substances 0.000 claims abstract description 36
- 239000004020 conductor Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
A waterproof structure of an insulated cable terminal comprises a connecting assembly, a sealing end sleeve, a first waterproof hot melt adhesive, a second waterproof hot melt adhesive, a third waterproof hot melt adhesive and a rubber sleeve; the end of the cable conductor is coated with an insulating layer; a sheath is sleeved outside the insulating layer; the connecting component comprises a short connecting pipe, a fastening nut, a grounding ring and a fixing nut; the middle part of the short connecting pipe is provided with a bulge; the short connecting pipe is divided into a left connecting section and a right connecting section by the bulge; the left connecting section is sleeved outside the sheath; the fastening nut fixes the left connecting section and the sheath; the grounding ring and the fixed nut are sleeved on the right connecting section; the sealing end sleeve is sleeved at the end part of the sheath; the first waterproof hot melt adhesive is sealed in a gap between the right connecting section and the sheath; the second waterproof hot melt adhesive is sealed between the sealing end sleeve and the cable lead; the rubber sleeve is connected to the connecting component and the outer side of the sealing end sleeve; and the third waterproof hot melt adhesive is filled between the rubber sleeve and the connecting assembly. The utility model provides a relatively poor technical problem of traditional waterproof construction waterproof performance.
Description
Technical Field
The utility model belongs to the technical field of the building engineering construction, in particular to waterproof construction at insulated cable terminal.
Background
The mineral insulated cable is also called MI cable or copper core copper sheath magnesium oxide insulated cable, the new technology is firstly converted into large-scale production in 1934 French rate at the earliest abroad, and the mineral insulated cable is successfully researched and developed in 1996 at the earliest in China. The structure of the mineral insulated cable is as follows: the copper conductor-magnesium oxide insulation-copper sheath has excellent fireproof performance, explosion-proof performance, overload capacity, wear resistance, corrosion resistance, mechanical impact resistance and the like, and is widely applied to public buildings, transportation, national important projects and key projects in China. At present, a thread terminal and a sealing tank structure are adopted in the traditional cable terminal installation, and the waterproof performance of the thread terminal and the cable sheath connecting part is poor under the extremely severe condition.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a waterproof construction at insulated cable terminal will solve the relatively poor technical problem of waterproof construction waterproof performance at traditional insulated cable terminal.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A waterproof structure of an insulated cable terminal is arranged at the outer side of a cable conductor and close to the end part; the waterproof sealing device comprises a connecting assembly, a sealing end sleeve, a first waterproof hot melt adhesive, a second waterproof hot melt adhesive, a third waterproof hot melt adhesive and a rubber sleeve; the end part of the cable conductor is coated with an insulating layer; a sheath is sleeved outside the insulating layer, and the end part of the sheath exceeds the end part of the insulating layer; the connecting assembly is arranged at the outer side of the sheath and close to the end part of the cable conductor and comprises a short connecting pipe, a fastening nut, a grounding ring and a fixing nut; the middle part of the short connecting pipe is provided with an annular bulge; the short connecting pipe is divided into a left connecting section and a right connecting section by the bulge; the inner diameter of the left connecting section is matched with the outer diameter of the sheath, and the left connecting section is sleeved outside the sheath; the inner diameter of the right connecting section is larger than that of the left connecting section; the fastening nut is sleeved on the outer side of the left connecting section and fixes the left connecting section and the sheath; the grounding ring and the fixing nut are sequentially sleeved on the right connecting section; the sealing end sleeve is sleeved at the end part of the sheath, and the outer end of the sealing end sleeve exceeds the end part of the sheath; the first waterproof hot melt adhesive is sealed in a gap between the right connecting section and the sheath; the second waterproof hot melt adhesive is sealed in a gap between the sealing end sleeve and the cable lead; the rubber sleeve is sleeved outside the connecting component and the sealing end sleeve; the left end of the rubber sleeve exceeds the left end of the connecting component, the exceeding part of the rubber sleeve is wrapped outside the sheath, and the right end of the rubber sleeve exceeds the right end of the sealing end sleeve and is wrapped outside the cable conductor; and the third waterproof hot melt adhesive is filled in a gap between the rubber sleeve and the connecting assembly.
Preferably, the distance between the cable conductor connecting end and the end part on the corresponding side of the insulating layer is greater than or equal to 15 mm.
Preferably, the outer surface of the left connecting section is provided with an external thread, and the left connecting section is in threaded connection with the fastening nut; and the outer surface of the right connecting section is provided with an external thread, and the right connecting section is in threaded connection with the fixing nut.
Preferably, the outer diameter of the left connecting section is 25 mm-55 mm, and the outer diameter of the right connecting section is 30 mm-60 mm.
Preferably, the outer side surface of the sheath is provided with an external thread at a position close to the end part; the sealing end sleeve is connected with the sheath.
Preferably, the rubber sleeve comprises a conical section, a first straight section and a second straight section which are arranged in sequence; the section of the conical section is gradually increased from the end part to the middle part, the inner diameter of the section of the conical section close to one side of the middle part is larger than the outer diameter of the right connecting section, and the length of the conical section is not smaller than that of the connecting assembly; the inner diameter of the first straight section is adapted to the outer diameter of the sheath, and the length of the first straight section is adapted to the distance from the connecting component to the sealing end sleeve; the inner diameter of the second straight section is matched with the outer diameter of the sealing end sleeve, and the length of the second straight section is matched with that of the sealing end sleeve; the end part of the conical section is also provided with a first lap joint section; the first lap joint section is hooped on the outer side of the sheath; the end part of the second straight section is also provided with a second lap joint section; the second overlapping section is hooped outside the cable conductor.
Preferably, a support ring is arranged on the outer side of the left connecting section; the support ring is supported inside the fastening nut at a position near the outer port.
Compared with the prior art, the utility model has the following characteristics and beneficial effect.
1. In order to improve the waterproof performance of the intermediate connection structure and ensure the stable operation of the cable, the utility model discloses from the actual performance of the cable and considering the difficulty degree of actual installation and implementation, firstly, the port of the connection short pipe is sealed by the first waterproof hot melt adhesive; then sealing a threaded opening at the joint of the sealing end sleeve and the sheath by using a second waterproof hot melt adhesive, and stabilizing the terminal; and sleeving the connecting component and the sealing end sleeve by using a rubber sleeve, and filling third waterproof hot melt adhesive in the rubber sleeve for sealing. The utility model discloses a lower and waterproof, the relatively poor technical problem of dustproof performance of protection level of the waterproof construction at traditional insulated cable terminal has been solved to this kind of connection structure.
2. The utility model discloses at the waterproof hot melt adhesive of the sealed second of sheath port to establish the sleeve pipe at coupling assembling and sealed end sleeve outside cover, cover these nodes wherein through the sleeve pipe, avoided direct and external contact, increased the waterproof and dustproof performance of node position department.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of the cross-sectional structure of the waterproof structure of the present invention.
Fig. 2 is a schematic sectional structure view of the junction pipe of the present invention.
Fig. 3 is a schematic perspective view of the junction pipe of the present invention.
Fig. 4 is a schematic sectional structure diagram of the rubber bushing of the present invention.
Reference numerals: 1-cable lead, 2-sealing end sleeve, 3-first waterproof hot melt adhesive, 4-second waterproof hot melt adhesive, 5-third waterproof hot melt adhesive, 6-rubber sleeve, 6.1-conical section, 6.2-first straight section, 6.3-second straight section, 6.4-first lap joint section, 6.5-second lap joint section, 7-insulating layer, 8-sheath, 9-junction short tube, 9.1-left connecting section, 9.2-right connecting section, 9.3-bulge, 10-fastening nut, 11-grounding ring, 12-fixing nut and 13-support ring.
Detailed Description
As shown in fig. 1 to 4, the waterproof structure of the insulated cable terminal is provided at the outer side of the cable conductor 1 near the end position; the waterproof sealing device comprises a connecting assembly, a sealing end sleeve 2, a first waterproof hot melt adhesive 3, a second waterproof hot melt adhesive 4, a third waterproof hot melt adhesive 5 and a rubber sleeve 6; the end of the cable conductor 1 is coated with an insulating layer 7; a sheath 8 is sleeved outside the insulating layer 7, and the end part of the sheath 8 exceeds the end part of the insulating layer 7; the connecting assembly is arranged at the outer side of the sheath 8 and close to the end part of the cable conductor 1 and comprises a short connecting pipe 9, a fastening nut 10, a grounding ring 11 and a fixing nut 12; the middle part of the short connecting pipe 9 is provided with an annular bulge 9.3; the bulge 9.3 divides the short connecting pipe 9 into a left connecting section 9.1 and a right connecting section 9.2; the inner diameter of the left connecting section 9.1 is matched with the outer diameter of the sheath 8, and the left connecting section is sleeved on the outer side of the sheath 8; the inner diameter of the right connecting section 9.2 is larger than that of the left connecting section 9.1; the fastening nut 10 is sleeved on the outer side of the left connecting section 9.1 and fixes the left connecting section 9.1 and the sheath 8; the grounding ring 11 and the fixing nut 12 are sequentially sleeved on the right connecting section 9.2; the sealing end sleeve 2 is sleeved at the end part of the sheath 8, and the outer end of the sealing end sleeve 2 exceeds the end part of the sheath 8; the first waterproof hot melt adhesive 3 is sealed in a gap between the right connecting section 9.2 and the sheath 8; the second waterproof hot melt adhesive 4 is sealed in a gap between the sealing end sleeve 2 and the cable lead 1; the rubber sleeve 6 is sleeved outside the connecting assembly and the sealing end sleeve 2; the left end of the rubber sleeve 6 exceeds the left end of the connecting component and is wrapped outside the sheath 8, and the right end of the rubber sleeve 6 exceeds the right end of the sealing end sleeve 2 and is wrapped outside the cable conductor 1; and the third waterproof hot melt adhesive 5 is filled in a gap between the rubber sleeve 6 and the connecting component.
In this embodiment, the distance between the connecting end of the cable conductor 1 and the end of the corresponding side of the insulating layer 7 is greater than or equal to 15 mm.
In this embodiment, an external thread is arranged on the outer surface of the left connecting section 9.1, and the left connecting section 9.1 is in threaded connection with the fastening nut 10; and an external thread is arranged on the outer surface of the right connecting section 9.2, and the right connecting section 9.2 is in threaded connection with the fixing nut 12.
In the embodiment, the outer diameter of the left connecting section 9.1 is 25 mm-55 mm, and the outer diameter of the right connecting section 9.2 is 30 mm-60 mm.
In this embodiment, the outer side surface of the sheath 8 is provided with an external thread at a position close to the end; the sealed end sleeve 2 is connected with a sheath 8.
In this embodiment, the rubber sleeve 6 includes a tapered section 6.1, a first straight section 6.2 and a second straight section 6.3, which are sequentially arranged; the section of the conical section 6.1 is gradually increased from the end part to the middle part, the inner diameter of the section of the conical section 6.1 close to the middle part is larger than the outer diameter of the right connecting section 9.2, and the length of the conical section 6.1 is not smaller than that of the connecting assembly; the inner diameter of the first straight section 6.2 is adapted to the outer diameter of the sheath 8, and the length of the first straight section 6.2 is adapted to the distance between the connecting component and the sealing end sleeve 2; the inner diameter of the second straight section 6.3 is adapted to the outer diameter of the sealing end sleeve 2, and the length of the second straight section 6.3 is adapted to the length of the sealing end sleeve 2; the end part of the conical section 6.1 is also provided with a first lap joint section 6.4; the first overlapping section 6.4 is hooped outside the sheath 8; the end part of the second straight section 6.3 is also provided with a second lap joint section 6.5; the second overlapping section 6.5 is looped on the outside of the cable line 1.
In this embodiment, a support ring 13 is arranged outside the left connecting section 9.1; the support ring 13 is supported inside the fastening nut 10 at a position near the outer port.
In this embodiment, the sheath 8 is a copper sheath.
Of course, in other embodiments, the sheath 8 may also be a steel sheath or an alloy sheath.
In this embodiment, the insulating layer 7 is a magnesium oxide insulating layer.
In this embodiment, the first waterproof hot melt adhesive 3 and the second waterproof hot melt adhesive 4 are both temperature-resistant environment-friendly hot melt adhesives; the third waterproof hot melt adhesive 5 is high-strength high-transparency environment-friendly hot melt adhesive.
The above embodiments are not exhaustive of the specific embodiments, and other embodiments are possible, and the above embodiments are intended to illustrate, but not limit the scope of the present invention, and all applications coming from the simple changes of the present invention fall within the scope of the present invention.
Claims (7)
1. A waterproof structure of an insulated cable terminal is arranged at the outer side of a cable conductor (1) and close to the end part; the method is characterized in that: the waterproof sealing device comprises a connecting assembly, a sealing end sleeve (2), a first waterproof hot melt adhesive (3), a second waterproof hot melt adhesive (4), a third waterproof hot melt adhesive (5) and a rubber sleeve (6); the end part of the cable conductor (1) is coated with an insulating layer (7); a sheath (8) is sleeved on the outer side of the insulating layer (7), and the end part of the sheath (8) exceeds the end part of the insulating layer (7); the connecting assembly is arranged at the outer side of the sheath (8) and close to the end part of the cable conductor (1), and comprises a short connecting pipe (9), a fastening nut (10), a grounding ring (11) and a fixing nut (12); the middle part of the short connecting pipe (9) is provided with an annular bulge (9.3); the connecting short pipe (9) is divided into a left connecting section (9.1) and a right connecting section (9.2) by the bulge (9.3); the inner diameter of the left connecting section (9.1) is matched with the outer diameter of the sheath (8), and the left connecting section is sleeved on the outer side of the sheath (8); the inner diameter of the right connecting section (9.2) is larger than that of the left connecting section (9.1); the fastening nut (10) is sleeved on the outer side of the left connecting section (9.1) and fixes the left connecting section (9.1) and the sheath (8); the grounding ring (11) and the fixing nut (12) are sequentially sleeved on the right connecting section (9.2); the sealing end sleeve (2) is sleeved at the end part of the sheath (8), and the outer end of the sealing end sleeve (2) exceeds the end part of the sheath (8); the first waterproof hot melt adhesive (3) is sealed in a gap between the right connecting section (9.2) and the sheath (8); the second waterproof hot melt adhesive (4) is sealed in a gap between the sealing end sleeve (2) and the cable conductor (1); the rubber sleeve (6) is sleeved outside the connecting assembly and the sealing end sleeve (2); the left end of the rubber sleeve (6) exceeds the left end of the connecting component and is wrapped outside the sheath (8), and the right end of the rubber sleeve (6) exceeds the right end of the sealing end sleeve (2) and the exceeding part is wrapped outside the cable conductor (1); and the third waterproof hot melt adhesive (5) is filled in a gap between the rubber sleeve (6) and the connecting assembly.
2. The waterproof structure of an insulated cable terminal according to claim 1, characterized in that: the distance between the connecting end of the cable conductor (1) and the end part of the corresponding side of the insulating layer (7) is more than or equal to 15 mm.
3. The waterproof structure of an insulated cable terminal according to claim 1, characterized in that: an external thread is arranged on the outer surface of the left connecting section (9.1), and the left connecting section (9.1) is in threaded connection with the fastening nut (10); an external thread is arranged on the outer surface of the right connecting section (9.2), and the right connecting section (9.2) is in threaded connection with the fixing nut (12).
4. The waterproof structure of an insulated cable terminal according to claim 1, characterized in that: the outer diameter of the left connecting section (9.1) is 25 mm-55 mm, and the outer diameter of the right connecting section (9.2) is 30 mm-60 mm.
5. The waterproof structure of an insulated cable terminal according to claim 1, characterized in that: external threads are arranged on the outer side surface of the sheath (8) and close to the end part; the sealing end sleeve (2) is connected with the sheath (8).
6. The waterproof structure of an insulated cable terminal according to claim 1, characterized in that: the rubber sleeve (6) comprises a conical section (6.1), a first straight section (6.2) and a second straight section (6.3) which are arranged in sequence; the section of the conical section (6.1) is gradually increased from the end part to the middle part, the inner diameter of the section of the conical section (6.1) close to the middle part is larger than the outer diameter of the right connecting section (9.2), and the length of the conical section (6.1) is not smaller than that of the connecting assembly; the inner diameter of the first straight section (6.2) is adapted to the outer diameter of the sheath (8), and the length of the first straight section (6.2) is adapted to the distance between the connecting component and the sealing end sleeve (2); the inner diameter of the second straight section (6.3) is adapted to the outer diameter of the sealing end sleeve (2), and the length of the second straight section (6.3) is adapted to the length of the sealing end sleeve (2); the end part of the conical section (6.1) is also provided with a first lap joint section (6.4); the first overlapping section (6.4) is hooped outside the sheath (8); the end part of the second straight section (6.3) is also provided with a second lap joint section (6.5); the second overlapping section (6.5) is hooped outside the cable conductor (1).
7. The waterproof structure of an insulated cable terminal according to claim 1, characterized in that: a support ring (13) is arranged on the outer side of the left connecting section (9.1); the support ring (13) is supported inside the fastening nut (10) at a position close to the outer port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020295024.5U CN211701437U (en) | 2020-03-11 | 2020-03-11 | Waterproof structure of insulated cable terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020295024.5U CN211701437U (en) | 2020-03-11 | 2020-03-11 | Waterproof structure of insulated cable terminal |
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| Publication Number | Publication Date |
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| CN211701437U true CN211701437U (en) | 2020-10-16 |
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| CN202020295024.5U Active CN211701437U (en) | 2020-03-11 | 2020-03-11 | Waterproof structure of insulated cable terminal |
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| CN (1) | CN211701437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118311371A (en) * | 2024-03-08 | 2024-07-09 | 郑州鸿程电气设备有限公司 | Intelligent power transmission line pole tower detection equipment |
-
2020
- 2020-03-11 CN CN202020295024.5U patent/CN211701437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118311371A (en) * | 2024-03-08 | 2024-07-09 | 郑州鸿程电气设备有限公司 | Intelligent power transmission line pole tower detection equipment |
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