CN111327014A - Connection mode of anti-explosion intermediate joint of viscose flexible cable for underground pipe network - Google Patents
Connection mode of anti-explosion intermediate joint of viscose flexible cable for underground pipe network Download PDFInfo
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- CN111327014A CN111327014A CN201811531206.1A CN201811531206A CN111327014A CN 111327014 A CN111327014 A CN 111327014A CN 201811531206 A CN201811531206 A CN 201811531206A CN 111327014 A CN111327014 A CN 111327014A
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- cable
- explosion
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- universal joint
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model provides an explosion-proof intermediate head connected mode of viscose type flexible cable for underground pipe network, according to the characteristics of city distribution network, when the tunnel of underground pipe network, calandria or worker's well, cable layer and slot lay the cable intermediate head, adopt the explosion-proof intermediate head box of viscose type flexible cable to carry out the intermediate head and connect, and through the tunnel of adjusting the explosion-proof intermediate head box of viscose type flexible cable in underground pipe network, calandria or worker's well, the position in cable layer and the slot are laid, adapt to the distortion of cable intermediate head, effectively with cable intermediate head lock in the casing, make things convenient for the cable junction in the explosion-proof box of cable. The invention has excellent fireproof and explosion-proof performance, effectively prevents the burning explosion of the middle joint of the power cable from damaging other cables, thereby ensuring the safe and stable operation of the cable line, and simultaneously, the invention can conveniently adjust the connection angle position and facilitate the connection of twisted cables because of adopting the flexible connection box for connection.
Description
Technical Field
The invention relates to a connection mode and a device structure of a power distribution system, in particular to a cable joint box for an urban underground power distribution network and a cable joint connection mode thereof, and belongs to the technical field of power distribution of power grids.
Background
In the current power grid construction, cables are mostly adopted for the inlet and outlet lines of newly-built transformer substations in city center areas. During laying of the cable in a tunnel, a pipe arrangement (a working well), a cable layer and a groove, a cable middle joint is influenced by factors such as field manufacturing conditions, materials, processes and the like and becomes a weak link of a cable line. Once a cable intermediate joint fault occurs, the generated destructive force not only can cause the power failure and the outage of the line, but also can cause damage to peripheral running cable lines, power facilities and personnel, and even can cause secondary accidents. With the increasing number of cable lines, the probability of faults caused by the cable intermediate joint is increased. According to relevant data statistics, China almost has cable fire accidents of different degrees every year, and most of the cable fire accidents are caused by explosion of cable intermediate connectors.
The existing cable explosion-proof box is made of metal or glass fiber reinforced plastic, and the appearance of the product is in a long-strip column shape and has no flexible degree of expansion. Because the cable is coiled or laid in a cable trench or a cable well, the cable can be distorted and deformed during the construction and laying of the cable intermediate connector, and the cable is in an irregular bending state, so that the cable explosion-proof box cannot adapt to the distortion and deformation of the cable intermediate connector after the construction of the cable intermediate connector is finished, and the cable intermediate connector cannot be effectively buckled in the shell, so that the cable explosion-proof box cannot be installed or is difficult to install. There is therefore a great need for improvement.
Disclosure of Invention
The invention provides a novel connector box for connecting urban underground distribution network cable middles and a connecting mode thereof, aiming at solving the defects of the existing urban distribution network cable midjoint connecting technology.
The above object of the present invention is achieved by the following technical means: the utility model provides an explosion-proof intermediate head connected mode of viscose type flexible cable for underground pipe network, according to the characteristics of city distribution network, when the tunnel of underground pipe network, calandria or worker's well, cable layer and slot lay the cable intermediate head, adopt the explosion-proof intermediate head box of viscose type flexible cable to carry out the intermediate head and connect, and through the tunnel of adjusting the explosion-proof intermediate head box of viscose type flexible cable in underground pipe network, calandria or worker's well, the position in cable layer and the slot are laid, adapt to the distortion of cable intermediate head, effectively with cable intermediate head lock in the casing, make things convenient for the cable junction in the explosion-proof box of cable.
Furthermore, the adhesive type flexible cable explosion-proof middle joint box is a full-bonding universal cable joint box consisting of an upper box body, a lower box body, a double-hole universal joint and a single-hole universal joint, wherein the upper box body and the lower box body are made of flexible materials, are butted in an inclined plane-shaped tongue-and-groove mode and are firmly bonded by structural adhesive to form a box body with holes at the left end and the right end, the single-hole universal joint or the double-hole universal joint is selected according to the number of cables at the inlet end and the outlet end of the box body, arc head balls at one end of the universal joint are respectively embedded into the holes at the two ends of the box body, the box body is bonded by conductive adhesive to form a complete cable joint box, and a layer of anticorrosive adhesive and a layer of glass fiber reinforced plastic are coated on.
Further, last box body by last casing, the bush on the left side, the gasket constitutes on bush and the right side on, go up casing and the left side on bush and the right side on the bush overlap joint mutually, the kneck bonds with conductive adhesive mutually, on the left side on the gasket inboard scribble with the structure sticky in last casing and the left side on the interface surface of bush, simultaneously on the right side on the gasket inboard scribble with the structure sticky in last casing and the right side on the interface surface of bush, and it has an exhaust hole to open at last casing middle part, at the inboard and universal joint department of universal joint bulb of two upper bushings on the left and right sides, make the identical concave cambered surface with universal joint bulb radian.
Further, lower box by casing down, left side lower bushing, left side lower gasket, right side lower bushing, right side lower gasket constitute, casing and left side lower bushing and right side lower bushing overlap joint down, the kneck is glued with the conducting resin mutually, scribble structure glue on the left side lower gasket inboard on the interface surface of casing and left side lower bushing down, glue on the interface surface of casing and right side lower bushing under the right side lower gasket with the structure glue equally, two lower bushing inboards and universal joint ball portion combination department about, make the identical concave arc face with universal joint ball face radian.
Furthermore, the double-hole universal joint is composed of two adjacent semicircular universal joint upper petals and a universal joint lower petal with the same shape on the cross section, the upper petals and the lower petals are oppositely inserted by grooves and tongues, the insertion openings are bonded by structural adhesive, and the joint of one end of the double-hole universal joint and the lining is made into a circular arc head spherical surface with the radian matched with the radian of the inner side of the lining.
Furthermore, the single-hole universal joint is composed of an upper universal joint lobe with a semicircular section and a lower universal joint lobe with the same shape, the upper and lower universal joint lobes are butted by a tongue-and-groove, a socket is firmly adhered by structural adhesive, and a part of one end of the universal joint combined with the bush is made into a circular arc head spherical surface with the radian matched with the radian of the inner side of the bush.
Compared with the prior art, the invention has the advantages that: the invention has excellent fireproof and explosion-proof performance, effectively prevents the burning explosion of the middle joint of the power cable from damaging other cables, thereby ensuring the safe and stable operation of the cable line, and simultaneously, the invention can conveniently adjust the connection angle position and facilitate the connection of twisted cables because of adopting the flexible connection box for connection.
Drawings
FIG. 1 is a schematic longitudinal sectional view of the present invention.
Detailed Description
The present invention will be described in more detail with reference to examples.
As shown in fig. 1, the invention relates to a connection mode of an anti-explosion intermediate joint of a viscose flexible cable for an underground pipe network, which is characterized in that according to the characteristics of an urban distribution network, when the intermediate joint of the cable is laid in a tunnel, a pipe arrangement or a work well, a cable layer and a groove of the underground pipe network, the intermediate joint is connected by adopting an anti-explosion intermediate joint box of the viscose flexible cable, and the distortion of the intermediate joint of the cable is adapted by adjusting the positions of the anti-explosion intermediate joint box of the viscose flexible cable in the laying of the tunnel, the pipe arrangement or the work well, the cable layer and the groove of the underground pipe network, so that the intermediate joint of the cable is effectively buckled in a shell, and the cable connection in the anti-explosion cable box is convenient.
The anti-explosion intermediate joint box for the viscose flexible cables is a fully-bonded universal cable joint box consisting of an upper box body, a lower box body, a double-hole universal joint and a single-hole universal joint, wherein the upper box body and the lower box body are made of flexible materials, are butted by inclined plane-shaped tongues and grooves and are firmly bonded by structural adhesive to form a box body with holes at the left end and the right end, the single-hole or double-hole universal joint is selected according to the number of cables at the inlet end and the outlet end of the box body, arc head balls at one end of the universal joint are respectively embedded into the holes at the two ends of the box body and are bonded with the box body by conductive adhesive to form a complete cable joint box, and a layer of anti-corrosion adhesive and a layer of glass fiber reinforced plastic are coated on the.
The upper shell 4 is connected with the left upper lining 2 and the right upper lining 7 in an overlapping mode, the interface is bonded by conductive adhesive, the inner side of the left upper sealing sheet 3 is coated with structural adhesive to be adhered to the interface surfaces of the upper shell 4 and the left upper lining 2, meanwhile, the inner side of the right upper sealing sheet 6 is coated with structural adhesive to be adhered to the interface surfaces of the upper shell 4 and the right upper lining 7, an upper box body is manufactured, and the middle of the upper shell is provided with an exhaust hole 5. The lower box body is manufactured by lapping a lower shell 12 with a left lower bushing 11 and a right lower bushing 14, bonding the interface with conductive adhesive, coating a structure adhesive on the inner side of a left lower sealing sheet 10 and bonding the structure adhesive on the interface surface of the lower shell 12 and the left lower bushing 11, and bonding a right lower sealing sheet 13 coated with the structure adhesive on the inner side on the interface surface of the lower shell 12 and the right lower bushing 14 by the same method. The upper box body and the lower box body are combined by inclined plane tongue-and-groove and are firmly adhered by structural adhesive to form a box body with a left side and a right side opened. The upper lobe 1 of the double-hole universal joint is butted with the lower lobe 9 of the double-hole universal joint by structural adhesive in a tongue-and-groove mode, the surfaces of circular arc ball heads of the upper lobe 1 of the double-hole universal joint are respectively bonded with the concave arc surfaces of the upper bush 2 on the left side and the lower bush 11 on the left side by conductive adhesive, the upper lobe 8 of the single-hole universal joint is butted with the lower lobe 15 of the single-hole universal joint by structural adhesive in a tongue-and-groove mode, and the surfaces of circular arc head balls of the upper lobe are respectively bonded with the upper bush 7 on the right side and the lower bush 14 on the right side by conductive adhesive, so that. When a cable needs to be connected, the cable joint is respectively inserted into the universal joint prefabricated holes at two ends of the joint box according to the design requirement, and the cable metal sheath is firmly bonded in the arc head ball of the universal joint by using structural adhesive, so that the aims of random wiring quantity and trend, good sealing property and meeting the electrical performance requirement are fulfilled.
The foregoing detailed description is given by way of example only, and is provided to better enable one skilled in the art to understand the patent, and is not intended to limit the scope of the patent; any equivalent alterations or modifications made according to the spirit of the disclosure of this patent are intended to be included in the scope of this patent.
Claims (6)
1. The utility model provides an explosion-proof intermediate head connected mode of viscose type flexible cable for underground pipe network which characterized in that: according to the characteristics of a city distribution network, when cable intermediate joints are laid in a tunnel, a pipe arranging pipe or a work well, a cable layer and a groove of an underground pipe network, the viscose type flexible cable explosion-proof intermediate joint box is adopted for intermediate joint connection, and the positions of the viscose type flexible cable explosion-proof intermediate joint box in the tunnel, the pipe arranging pipe or the work well, the cable layer and the groove of the underground pipe network are adjusted to adapt to the distortion of the cable intermediate joint, so that the cable intermediate joints are effectively buckled in a shell, and the cable connection in the cable explosion-proof box is facilitated.
2. The underground pipe network used adhesive type flexible cable explosion-proof intermediate joint connection mode according to claim 1, characterized in that: the anti-explosion intermediate joint box for the viscose flexible cables is a fully-bonded universal cable joint box consisting of an upper box body, a lower box body, a double-hole universal joint and a single-hole universal joint, wherein the upper box body and the lower box body are made of flexible materials, are butted by inclined plane-shaped tongues and grooves and are firmly bonded by structural adhesive to form a box body with holes at the left end and the right end, the single-hole or double-hole universal joint is selected according to the number of cables at the inlet end and the outlet end of the box body, arc head balls at one end of the universal joint are respectively embedded into the holes at the two ends of the box body and are bonded with the box body by conductive adhesive to form a complete cable joint box, and a layer of anti-corrosion adhesive and a layer of glass fiber reinforced plastic are coated on the metal.
3. The underground pipe network explosion-proof intermediate joint connecting mode for the viscose flexible cables according to claim 2, characterized in that: last box body by last casing, the bush on the left side, the gasket constitutes on the right side on bush and the right side, go up casing and the left side on bush and the right side on the bush overlap joint mutually, interface department bonds with conductive adhesive mutually, on the left side the gasket inboard scribble with the structure sticky in last casing and the left side on the interface surface of bush, simultaneously on the right side the gasket inboard scribble with the structure sticky in last casing and the right side on the interface surface of bush, and it has an exhaust hole to open at last casing middle part, at the left and right two inboard and universal joint of bush department of going up, make the identical concave arc face with universal joint sphere radian.
4. The underground pipe network explosion-proof intermediate joint connecting mode for the viscose flexible cables according to claim 2, characterized in that: the lower box by lower casing, left side lower liner, left side lower gasket, right side lower liner, right side lower gasket constitutes, casing and left side lower liner and right side lower liner overlap joint down, interface department bonds with conductive adhesive mutually, it is sticky in the interface of lower casing and left side lower liner to scribble structure glue under the left side on the gasket inboard, glue the right side lower gasket in the interface of lower casing and right side lower liner with structure glue on the surface equally, two lower liner inboards and universal joint ball department combine the department about, make the concave arc face identical with universal joint ball face radian.
5. The underground pipe network explosion-proof intermediate joint connecting mode for the viscose flexible cables according to claim 2, characterized in that: the double-hole universal joint is composed of two adjacent semicircular universal joint upper petals and universal joint lower petals with the same shape, the upper petals and the lower petals are oppositely inserted by grooves and tongues, the sockets are bonded by structural adhesive, and the joint of one end of the double-hole universal joint and the bushing is made into a circular arc head spherical surface with the radian matched with the radian of the inner side of the bushing.
6. The underground pipe network explosion-proof intermediate joint connecting mode for the viscose flexible cables according to claim 2, characterized in that: the single-hole universal joint is composed of an upper universal joint lobe with a semicircular section and a lower universal joint lobe with the same shape, the upper and lower universal joint lobes are butted through a tongue-and-groove, a socket is firmly adhered through structural adhesive, and a part of one end of the universal joint, which is combined with the lining, is made into a circular arc head spherical surface with the radian matched with that of the inner side of the lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531206.1A CN111327014A (en) | 2018-12-14 | 2018-12-14 | Connection mode of anti-explosion intermediate joint of viscose flexible cable for underground pipe network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811531206.1A CN111327014A (en) | 2018-12-14 | 2018-12-14 | Connection mode of anti-explosion intermediate joint of viscose flexible cable for underground pipe network |
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| Publication Number | Publication Date |
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| CN111327014A true CN111327014A (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811531206.1A Pending CN111327014A (en) | 2018-12-14 | 2018-12-14 | Connection mode of anti-explosion intermediate joint of viscose flexible cable for underground pipe network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786329A (en) * | 2020-07-13 | 2020-10-16 | 四川恩帝奕科技有限公司 | Hollow universal joint for pipeline detector and connector thereof |
-
2018
- 2018-12-14 CN CN201811531206.1A patent/CN111327014A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786329A (en) * | 2020-07-13 | 2020-10-16 | 四川恩帝奕科技有限公司 | Hollow universal joint for pipeline detector and connector thereof |
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Application publication date: 20200623 |