CN212875362U - Waterproof structure of cable intermediate head - Google Patents
Waterproof structure of cable intermediate head Download PDFInfo
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- CN212875362U CN212875362U CN202021817554.8U CN202021817554U CN212875362U CN 212875362 U CN212875362 U CN 212875362U CN 202021817554 U CN202021817554 U CN 202021817554U CN 212875362 U CN212875362 U CN 212875362U
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- intermediate joint
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Abstract
The utility model provides a waterproof structure of a cable intermediate joint, which comprises a left shell, a right shell, a sealing component and a heat shrink tube; the left shell and the right shell respectively coat the left part and the right part of the cable intermediate joint, and the left shell and the right shell are detachably connected; the sealing assemblies are respectively arranged in inner holes at the end parts of the left shell and the right shell and coat the cables at two ends of the cable middle joint; the heat shrinkable tube is sleeved on the cables of the left shell/the right shell and the cable intermediate joint. The waterproof structure of the cable intermediate joint of the utility model is not only convenient to install and operate, but also can enhance the waterproof effect of the cable intermediate joint; in addition, the waterproof structure does not need to change the electrical structure of the original cable intermediate joint, and the electrical performance of the original cable intermediate joint can be ensured.
Description
Technical Field
The utility model relates to a power cable annex, more specifically say, relate to a cable intermediate head's waterproof construction.
Background
The intermediate joint is a common cable accessory in cable engineering, and the common use place is buried or a working well. Since these areas are often flooded in water in rainy seasons due to their low topography, the requirement of the intermediate joints for water resistance is high, otherwise serious consequences can occur.
The structure of the intermediate joint is the following: the intermediate head has 3 waterproof constructions from inside to outside:
the 1 st waterproof structure is: the middle joint rubber part tightly holds the cable insulation by interference fit;
the 2 nd waterproof structure is: the half-lap cover between the cable inner sheaths at the two sides is completely covered by a waterproof belt;
the 3 rd waterproof structure is as follows: and the semi-lap cover between the cable outer sheaths at the two sides is completely covered by a waterproof belt.
The effect of the 3 waterproof structures is closely related to the aging performance of the material, the level of field constructors and the responsibility. The waterproof tape is small in field construction space, long in wrapping time due to the fact that the waterproof tape is half lapped, and tight in requirement on the lapping position, and is a great test for the patience, care and responsibility of constructors. And the waterproof belt (or other waterproof materials) is aged or is not well jointed with the cable body, so that water enters the interior of the intermediate joint, and the breakdown accident of the intermediate joint is caused to happen occasionally.
Therefore, the existing 3-way waterproof structure of the intermediate joint cannot meet higher waterproof requirements, and the existing waterproof structure of the intermediate joint needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a waterproof structure of a cable intermediate joint; the waterproof structure is convenient to install and operate, and the waterproof effect of the cable intermediate joint can be enhanced; in addition, the waterproof structure does not need to change the electrical structure of the original cable intermediate joint, and the electrical performance of the original cable intermediate joint can be ensured.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a waterproof construction of cable intermediate head which characterized in that: the middle joint is used for coating the cable; the heat-shrinkable tube comprises a left shell, a right shell, a sealing assembly and a heat-shrinkable tube; the left shell and the right shell respectively coat the left part and the right part of the cable intermediate joint, and the left shell and the right shell are detachably connected; the sealing assemblies are respectively arranged in inner holes at the end parts of the left shell and the right shell and coat the cables at two ends of the cable middle joint; the heat-shrinkable tube is sleeved on the cable of the left shell and the cable intermediate joint, and the heat-shrinkable tube is sleeved on the cable of the right shell and the cable intermediate joint.
In the above technical scheme, the utility model discloses cable intermediate head's waterproof construction is in the outside increase of original complete intermediate head, does not change original product electrical structure, does not consequently reduce the electrical property of original intermediate head when improving intermediate head waterproof performance. The left shell and the right shell can carry out waterproof protection on the middle joint, the sealing component can provide holding force for an outer sheath of a cable in the middle structure, the heat-shrinkable tube is sleeved on the cable of the left shell and the cable middle joint, and the heat-shrinkable tube is sleeved on the cable of the right shell and the cable middle joint, so that the waterproof effect can be further enhanced. In addition, the left shell and the right shell are detachably connected, so that the waterproof structure is convenient to install and operate.
The sealing assembly comprises a sealing rubber sleeve, a compression cone and a compression nut which are sequentially arranged in inner holes at the end parts of the left shell and the right shell; the sealing rubber sleeve coats the cables at two ends of the cable middle joint; the compression nut is connected with the internal thread of the left shell/the right shell and compresses one end of the compression cone, and the other end of the compression cone is abutted to the sealing rubber sleeve.
The sealing rubber sleeve is an elastic rubber piece.
And the end port of one end of the compression cone, which is abutted against the sealing rubber sleeve, is a horn-shaped end port. The design can increase the contact area of the compression cone and the sealing rubber sleeve, and a better compression effect is achieved.
The utility model also comprises a screw group; the left shell and the right shell are detachably connected through a screw group.
An O-shaped sealing ring is arranged between the left shell and the right shell.
The left shell and the right shell are both made of hard materials. In addition, the left shell and the right shell also have an explosion-proof function.
The utility model discloses cable intermediate head's waterproof construction is used like this: the heat shrink tube, the compression nut, the compression cone, the sealing rubber sleeve, the left shell and the O-shaped sealing ring are sleeved in advance from a left cable of the cable middle joint, and the heat shrink tube, the compression nut, the compression cone, the sealing rubber sleeve and the right shell are sleeved from a right cable of the cable middle joint. After the intermediate joint is normally installed, the left shell and the right shell (the O-shaped sealing ring needs to be installed in the left shell first) are moved to the middle and fixed together by a screw group. Pulling back the sealing rubber sleeve which is sleeved with the left cable in advance, and plugging the sealing rubber sleeve into the inner hole of the left shell; pulling back a compaction cone which is sleeved in the left cable in advance, plugging the compaction cone into the inner hole of the left shell, and propping against the sealing rubber sleeve; pulling back a compression nut which is sleeved in the left cable in advance, and screwing the compression nut into the left shell for screwing; and pulling back the heat shrinkable tube which is sleeved in the left cable in advance, sleeving the heat shrinkable tube on the left shell, and heating and shrinking to form a left structure. The right operation is the same. Through the structure, the intermediate joint adds 1 new waterproof on the basis of 3 original waterproof, thereby greatly improving the waterproof performance.
Compared with the prior art, the utility model has the advantages of as follows and beneficial effect:
1. the utility model discloses cable intermediate head's waterproof construction simple to operate, easy operation and operating requirement are low.
2. The utility model discloses cable intermediate head's waterproof construction reasonable in design is ingenious, has utilized the rubber elastic deformation of ripe O shape sealing washer waterproof technology and sealed gum cover to cable oversheath cohesion power technique, utilizes pyrocondensation pipe waterproof technology etc. to strengthen water-proof effects simultaneously.
3. The utility model discloses cable intermediate head's waterproof construction is in the outside increase of original complete intermediate head, does not change original product electrical structure, does not reduce original electrical property.
Drawings
FIG. 1 is a waterproof structure of a utility model cable intermediate joint;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
wherein, 1 is a heat shrinkable tube, 2 is a compression nut, 3 is a compression cone, 4 is a sealing rubber sleeve, 5 is a left shell, 6 is a screw group, 7 is an O-shaped sealing ring, 8 is a right shell, 9 is a cable middle joint, and 10 is a cable.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1 to 3, the utility model discloses cable intermediate head's waterproof construction is for cladding cable intermediate head 9, this waterproof construction includes left casing 5, right casing 8, sealing component and pyrocondensation pipe 1, wherein, left casing 5 and right casing 8 respectively cladding cable intermediate head 9's left part and right part, left casing 5 and right casing 8 can dismantle the connection, and sealing component sets up the tip hole at left casing 5 and right casing 8 respectively, the cable 10 at sealing component cladding cable intermediate head 9 both ends, pyrocondensation pipe 1 cover is established on left casing 5 and cable intermediate head 9's cable 10, and pyrocondensation pipe 1 cover is established on right casing 8 and cable intermediate head 9's cable 10. The left shell 5 and the right shell 8 are both made of hard materials, such as metal shells, hard plastic shells or shells made of epoxy molds, and the left shell 5 and the right shell 8 also have an explosion-proof function.
Specifically speaking, the utility model discloses a seal assembly is including setting gradually sealed gum cover 4 in 8 tip holes of left side casing 5 and right side casing, compress tightly awl 3 and gland nut 2, the cable 10 at 9 both ends of this sealed gum cover 4 cladding cable intermediate head, gland nut 2 and the internal thread connection of left casing 5/right casing 8 compress tightly the one end that compresses tightly awl 3, the other end that compresses tightly awl 3 offsets with sealed gum cover 4, this sealed gum cover 4 is the elastic rubber spare, the one end port that compresses tightly awl 3 and sealed gum cover 4 counterbalance is the tubaeform port, this design can be so that to compress tightly awl 3 and the increase of 4 area of contact of sealed gum cover, play a better effect of compressing tightly.
The utility model discloses still include screw group 6, left side casing 5 and right casing 8 realize dismantling the connection through screw group 6. In order to further improve the waterproof performance, an O-ring 7 is provided between the left and right housings 5 and 8.
The utility model discloses cable intermediate head's waterproof construction is used like this: the heat shrinkable tube 1, the compression nut 2, the compression cone 3, the sealing rubber sleeve 4, the left shell 5 and the O-shaped sealing ring 7 are sleeved in advance from a left cable 10 of a cable middle joint 9, and the heat shrinkable tube 1, the compression nut 2, the compression cone 3, the sealing rubber sleeve 4 and the right shell 8 are sleeved from a right cable 10 of the cable middle joint 9. After the intermediate joint is normally installed, the left shell 5 and the right shell 8 (the O-shaped sealing ring 7 needs to be installed in advance on the left shell 5) are moved to the middle and fixed together by the screw group 6. The sealing rubber sleeve 4 which is sleeved with the left cable 10 in advance is pulled back and is plugged into the inner hole of the left shell 5; the pressing cone 3 which is sleeved in the left cable 10 in advance is pulled back, is plugged into the inner hole of the left shell 5 and props against the sealing rubber sleeve 4; pulling back the compression nut 2 which is sleeved in the left cable 10 in advance, and screwing the compression nut into the internal thread of the left shell 5 for tightening; and pulling back the heat shrinkable tube 1 which is sleeved in the left cable 10 in advance, sleeving the heat shrinkable tube on the left shell 5, and heating and shrinking to form a left structure. The right operation is the same. Through the structure, the cable intermediate joint 9 adds 1 new waterproof channel on the basis of 3 original waterproof channels, thereby greatly improving the waterproof performance.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (7)
1. The utility model provides a waterproof construction of cable intermediate head which characterized in that: the middle joint is used for coating the cable; the heat-shrinkable tube comprises a left shell, a right shell, a sealing assembly and a heat-shrinkable tube; the left shell and the right shell respectively coat the left part and the right part of the cable intermediate joint, and the left shell and the right shell are detachably connected; the sealing assemblies are respectively arranged in inner holes at the end parts of the left shell and the right shell and coat the cables at two ends of the cable middle joint; the heat-shrinkable tube is sleeved on the cable of the left shell and the cable intermediate joint, and the heat-shrinkable tube is sleeved on the cable of the right shell and the cable intermediate joint.
2. The waterproof structure of a cable intermediate joint according to claim 1, characterized in that: the sealing assembly comprises a sealing rubber sleeve, a compression cone and a compression nut which are sequentially arranged in inner holes at the end parts of the left shell and the right shell; the sealing rubber sleeve coats the cables at two ends of the cable middle joint; the compression nut is connected with the internal thread of the left shell/the right shell and compresses one end of the compression cone, and the other end of the compression cone is abutted to the sealing rubber sleeve.
3. The waterproof structure of a cable intermediate joint according to claim 2, characterized in that: the sealing rubber sleeve is an elastic rubber piece.
4. The waterproof structure of a cable intermediate joint according to claim 2, characterized in that: and the end port of one end of the compression cone, which is abutted against the sealing rubber sleeve, is a horn-shaped end port.
5. The waterproof structure of a cable intermediate joint according to claim 1, characterized in that: the screw further comprises a screw group; the left shell and the right shell are detachably connected through a screw group.
6. The waterproof structure of a cable intermediate joint according to claim 1, characterized in that: an O-shaped sealing ring is arranged between the left shell and the right shell.
7. The waterproof structure of a cable intermediate joint according to claim 1, characterized in that: the left shell and the right shell are both made of hard materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021817554.8U CN212875362U (en) | 2020-08-27 | 2020-08-27 | Waterproof structure of cable intermediate head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021817554.8U CN212875362U (en) | 2020-08-27 | 2020-08-27 | Waterproof structure of cable intermediate head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212875362U true CN212875362U (en) | 2021-04-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021817554.8U Active CN212875362U (en) | 2020-08-27 | 2020-08-27 | Waterproof structure of cable intermediate head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212875362U (en) |
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2020
- 2020-08-27 CN CN202021817554.8U patent/CN212875362U/en active Active
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