CN111525490A - Cable joint protector - Google Patents
Cable joint protector Download PDFInfo
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- CN111525490A CN111525490A CN202010449315.XA CN202010449315A CN111525490A CN 111525490 A CN111525490 A CN 111525490A CN 202010449315 A CN202010449315 A CN 202010449315A CN 111525490 A CN111525490 A CN 111525490A
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- Prior art keywords
- hard shell
- cable
- shell
- glue injection
- annular
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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
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Abstract
The invention relates to the technical field of cable connection and discloses a cable joint protection device. The cable joint protection device is used for protecting joint parts of two cables and comprises a first hard shell, a second hard shell and two welding sections, wherein the first hard shell is used for sleeving one cable; the second hard shell is used for being sleeved on another cable, and the second hard shell is connected with the first hard shell in a sealing mode to form an accommodating space for accommodating the joint part of the cable; the two welding sections are respectively connected to the ends, deviating from each other, of the first hard shell and the second hard shell, and the welding sections can be in welding connection with the outer sheath of the cable. The cable joint protection device is simple in structure, has the capability of resisting external extrusion and is good in waterproof effect.
Description
Technical Field
The invention relates to the technical field of cable connection, in particular to a cable joint protection device.
Background
The cable joint is comparatively weak place in the cable, especially when the joint position is in the adverse circumstances such as humidity, acid soil, in order to guarantee the life of whole cable, need specially to this part carry out the protection in the aspect of waterproof, anti extrusion etc..
In the prior art, the waterproof measures at the cable joint part are mainly realized by respectively winding the waterproof adhesive tape on the inner sheath and the outer sheath of the cable, on one hand, the waterproof adhesive tape is loosened to possibly cause waterproof failure, so that short circuit and other risks are caused, and on the other hand, when the joint part of the cable is extruded by external force, the waterproof adhesive tape cannot play a role in protecting the joint part.
Therefore, it is desirable to provide a cable splice protector to solve the above problems.
Disclosure of Invention
The invention aims to provide a cable joint protection device which is simple in structure, has the capability of resisting external extrusion and is good in waterproof effect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cable splice protector for protecting the splice location of two cables, comprising:
the first hard shell is used for sleeving one cable;
the second hard shell is sleeved on another cable, and the second hard shell is hermetically connected with the first hard shell to form an accommodating space for accommodating the joint part of the cable;
the two welding sections are respectively connected to one ends, deviating from each other, of the first hard shell and the second hard shell, and the welding sections can be in welding connection with the outer sheath of the cable.
Optionally, an annular boss is arranged on an end face of one of the first hard shell and the second hard shell, an insertion groove is arranged on an end face of the other hard shell along the circumferential direction of the end face, and the annular boss is inserted into the insertion groove.
Optionally, be provided with the annular on the global of annular boss, the annular with the cell wall of inserting groove encloses into the annular and holds the chamber, the intracavity is held to the annular is filled with waterproof glue.
Optionally, a glue injection hole is formed in a wall of the insertion groove and communicated with the annular groove.
Optionally, the cable joint protection device further comprises a connection bolt, and the connection bolt can block the glue injection hole.
Optionally, a positioning hole corresponding to the glue injection hole is formed in the circumferential surface of the annular boss, and the connecting bolt can penetrate through the glue injection hole and be inserted into the positioning hole.
Optionally, the number of the glue injection holes is equal to that of the positioning holes, and the glue injection holes are uniformly distributed along the circumferential direction of the wall of the inserting groove.
Optionally, the welding section is a revolving body shell, and a cross-sectional area of one end of the welding section, which is connected with the first hard shell and the second hard shell, is larger than that of the other end of the welding section.
Optionally, the welding section is made of ethylene propylene diene monomer; and/or the first hard shell and the second hard shell are made of polyethylene.
Optionally, two of the welding segments are respectively connected with the first hard shell and the second hard shell by welding.
The invention has the beneficial effects that:
when the cable joint protection device is used, one cable penetrates through the welding section and the first hard shell, the other cable penetrates through the other welding section and the second hard shell, then the two cables are connected, then the first hard shell and the second hard shell are connected in a sealing mode, and finally the two welding sections are heated to be respectively connected with the outer sheaths of the two cables in a welding mode. The accommodating space enclosed by the first hard shell and the second hard shell can well protect the joint parts of the two cables, prevent the joint parts from being loose when being subjected to external pressure and ensure the normal use of the cables; in addition, the junction of first hard shell and second hard shell is sealing connection, and can realize sealed after the butt fusion section at its both ends and the oversheath butt fusion of cable, so make two cables be in complete sealing environment to reach good water-proof effects. The cable joint protection device is simple in structure, has the capability of resisting external extrusion and has a good waterproof effect.
Drawings
FIG. 1 is an exploded view of a cable splice protector according to an embodiment of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
In the figure:
1-a first hard shell; 2-a second hard shell; 3-a welding section; 4-an annular boss; 5-inserting grooves; 6-ring groove; 7-glue injection holes; 8-positioning holes; 9-connecting bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
In the prior art, the protection measures of the cable joint part are mainly realized by respectively winding the waterproof adhesive tape on the inner sheath and the outer sheath of the cable, on one hand, the waterproof adhesive tape can be loosened after a long time to cause the waterproof failure, so that the risks such as short circuit and the like can be caused, and on the other hand, when the joint part of the cable is extruded by external force, the waterproof adhesive tape can not play a role in protecting the joint part.
To above-mentioned problem, this embodiment provides a cable joint protector, and it can be used to cable junction technical field, is particularly useful for being in the protection of cable joint among the adverse circumstances such as aquatic, acid soil. As shown in fig. 1 and 2, the cable joint protection device includes a first hard shell 1, a second hard shell 2 and two welding sections 3, the first hard shell 1 is used for sheathing a cable, the second hard shell 2 is used for sheathing another cable, the second hard shell 2 and the first hard shell 1 are hermetically connected to form a containing space for containing a joint of the cable, the two welding sections 3 are respectively connected to one ends of the first hard shell 1 and the second hard shell 2 which are deviated from each other, and the welding sections 3 can be connected with an outer sheath of the cable in a welding manner.
When the cable joint protection device is used, one cable penetrates through the welding section 3 and the first hard shell 1, the other cable penetrates through the other welding section 3 and the second hard shell 2, the heads of the two cables are connected, the first hard shell 1 and the second hard shell 2 are connected in a sealing mode, and finally the two welding sections 3 are heated to be respectively connected with the outer sheaths of the two cables in a welding mode. The accommodating space enclosed by the first hard shell 1 and the second hard shell 2 can well protect the joint parts of the two cables, prevent the joint parts from being loose when being subjected to external pressure, and ensure the normal use of the cables; in addition, the junction of first hard shell 1 and second hard shell 2 is sealing connection, and can realize sealing after the butt fusion section 3 at its both ends welds with the oversheath of cable, so make two cables be in complete sealing environment to reach good water-proof effects. The cable joint protection device is simple in structure, has the capability of resisting external extrusion and has a good waterproof effect.
Specifically, in the present embodiment, the first hard shell 1 and the second hard shell 2 are both cylindrical shells with openings at both ends, and the inner diameters of the first hard shell 1 and the second hard shell 2 are larger than the diameter of the cable, so that a large enough accommodating space is formed to accommodate the connection joint. Optionally, first hard shell 1 and second hard shell 2 all adopt the polyethylene material, and polyethylene corrosion resistance is good, insulating good and can be waterproof to make cable joint protector can be applicable to abominable environment, in addition, polyethylene has moderate hardness, thereby can play the resistance to compression protective effect to the attach fitting position of cable.
Preferably, as shown in fig. 1, the welding section 3 is a solid of revolution housing, and the cross-sectional area of one end of the welding section 3 connected with the first hard shell 1 and the second hard shell 2 is larger than that of the other end. The cross sectional area of one end of the welding section 3 connected with the hard shell is large, so that the welding section 3 can be connected with the first hard shell 1 and the second hard shell 2 with the diameters larger than the diameter of the cable in a fitting mode, the cross sectional area of one end of the welding section 3 not connected with the hard shell is small, the welding section can be closer to the outer diameter of the cable, and the welding section is easier to be completely sealed in a fitting mode with the outer sheath of the cable when being connected with the outer sheath of the cable after being heated.
Optionally, the welding section 3 is made of ethylene propylene diene monomer, the material is low in cost, good in insulativity and good in chemical corrosion resistance, and in addition, the melting point of the ethylene propylene diene monomer is relatively low, so that welding operation in the field operation process is facilitated. Further, the welding section 3 is welded to the first hard shell 1 and the second hard shell 2. The welding mode does not need other components to be installed in a matching mode and has good sealing effect. In this embodiment, the welding of the welding section 3 with the first hard shell 1 and the second hard shell 2 is completed in advance, and the field welding is not needed when the field installation is used, so that the field installation efficiency is improved.
In order to realize the connection between the first hard shell 1 and the second hard shell 2, as shown in fig. 2, an annular boss 4 is provided on an end face of one of the first hard shell 1 and the second hard shell 2, an insertion groove 5 is provided along a circumferential direction of the other end, and the annular boss 4 is inserted into the insertion groove 5. The inserting mode is convenient to operate and high in installation efficiency. Specifically, in this embodiment, an annular boss 4 is provided on the end face of the first hard case 1, and an insertion groove 5 is provided at the end of the second hard case 2, but in other embodiments, an annular boss 4 may be provided on the end face of the second hard case 2, and an insertion groove 5 may be provided at the end of the first hard case 1.
Preferably, in order to realize the sealing of the splicing part of the first hard shell 1 and the second hard shell 2, a ring groove 6 is arranged on the circumferential surface of the annular boss 4, the ring groove 6 and the groove wall of the splicing groove 5 enclose an annular accommodating cavity, and waterproof glue is filled in the annular accommodating cavity. The annular groove 6 can contain enough waterproof glue, and after the waterproof glue is injected into the annular containing cavity, a gap at the joint of the first hard shell 1 and the second hard shell 2 can be completely sealed, so that a good sealing and waterproof effect is achieved; in addition, waterproof glue bonds and can increase joint strength between first hard shell 1 and the hard shell 2 of second after, makes cable joint protector be difficult for taking place the fracture from the junction.
Preferably, as shown in fig. 2, a glue injection hole 7 is formed in a wall of the insertion groove 5, and the glue injection hole 7 is communicated with the ring groove 6. After first hard shell 1 is pegged graft with second hard shell 2, hold the intracavity from the cell wall of inserting groove 5 and the injecting glue hole 7 on second hard shell 2 and pour into waterproof glue into to the annular, convenient operation on the one hand, on the other hand realizes easily that waterproof glue fills the full annular completely and holds the chamber, guarantees sealed water-proof effects.
The waterproof glue usually needs a certain time to cure, and in order to reduce the time for waiting for the waterproof glue to cure, as shown in fig. 2, the cable joint protection device further includes a connection bolt 9, and the connection bolt 9 can block the glue injection hole 7. After the cavity is filled with the waterproof glue from the glue injection hole 7 to the annular accommodating cavity, the connecting bolt 9 is inserted into the glue injection hole 7, the annular accommodating cavity can be completely sealed, the waterproof glue cannot flow out, and therefore the construction process does not need to wait for the waterproof glue to be completely cured, and time is saved.
Preferably, the circumferential surface of the annular boss 4 is provided with a positioning hole 8 corresponding to the glue injection hole 7, and the connecting bolt 9 can penetrate through the glue injection hole 7 and be inserted into the positioning hole 8. The connecting bolt 9 penetrates through the glue injection hole 7 and then is inserted into the positioning hole 8, so that the axial connection strength of the first hard shell 1 and the second hard shell 2 can be further improved, and the cable joint protection device is not easy to loosen at the joint.
Further, injecting glue hole 7 equals and is a plurality ofly with locating hole 8 quantity, and a plurality of injecting glue holes 7 are along the circumference equipartition of the cell wall of inserting groove 5. A plurality of connecting bolts 9 can correspondingly penetrate through glue injection holes 7 and locating holes 8 which are uniformly distributed, so that the first hard shell 1 and the second hard shell 2 are more symmetrical in connection along the circumferential direction, and the stress is more uniform. In this embodiment, the connection bolt 9 is in interference fit with the glue injection hole 7, so that the waterproof glue is prevented from flowing out of a connection gap between the connection bolt and the glue injection hole.
The use method of the cable joint protection device comprises the following steps: one cable passes through the welding section 3 and the first hard shell 1, and the other cable passes through the other welding section 3 and the second hard shell 2; after the heads of the two cables are connected, the first hard shell 1 and the second hard shell 2 are connected in an inserting way; at the moment, only one group of glue injection holes 7 and positioning holes 8 are reserved without installing the connecting bolts 9, and the rest glue injection holes 7 and the rest positioning holes 8 are connected through the connecting bolts 9 so as to accurately position and stably connect the first hard shell 1 and the second hard shell 2; then, filling waterproof glue into the annular accommodating cavity from the reserved glue injection hole 7, and then inserting the connecting bolt 9 into the reserved glue injection hole 7 and the positioning hole 8; and finally, heating the two welding sections 3 to ensure that the two welding sections are respectively connected with the outer sheaths of the two cables in a welding way.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the invention and are not to be construed as limitations of the embodiments of the present invention, but may be modified in various embodiments and applications by those skilled in the art according to the spirit of the present invention, and the content of the present description should not be construed as a limitation of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A cable splice protector for protecting splice sites of two cables, comprising:
a first hard shell (1) for sheathing one of the cables;
the second hard shell (2) is sleeved on another cable, and the second hard shell (2) is connected with the first hard shell (1) in a sealing mode to form a containing space for containing a joint part of the cable;
the two welding sections (3) are respectively connected to one ends, deviating from each other, of the first hard shell (1) and the second hard shell (2), and the welding sections (3) can be in welding connection with the outer sheath of the cable.
2. The cable joint protector according to claim 1, characterized in that one of the first hard shell (1) and the second hard shell (2) is provided with an annular boss (4) on the end surface, and the other end surface is provided with a plug groove (5) along the circumferential direction, and the annular boss (4) is plugged into the plug groove (5).
3. The cable joint protector according to claim 2, characterized in that the circumferential surface of the annular boss (4) is provided with an annular groove (6), the annular groove (6) and the wall of the insertion groove (5) enclose an annular accommodating cavity, and the annular accommodating cavity is filled with waterproof glue.
4. A cable splice guard as claimed in claim 3, characterized in that the wall of the plug groove (5) is provided with glue injection holes (7), said glue injection holes (7) communicating with the annular groove (6).
5. A cable splice guard as claimed in claim 4, characterized in that the cable splice guard further comprises a connecting peg (9), the connecting peg (9) being capable of plugging the glue hole (7).
6. The cable splice guard according to claim 5, wherein the circumferential surface of the annular boss (4) is provided with a positioning hole (8) corresponding to the position of the glue injection hole (7), and the connecting bolt (9) can be inserted into the positioning hole (8) through the glue injection hole (7).
7. The cable joint protector according to claim 6, characterized in that the number of the glue injection holes (7) and the number of the positioning holes (8) are equal and multiple, and the glue injection holes (7) are uniformly distributed along the circumferential direction of the wall of the insertion groove (5).
8. A cable splice protection device according to any one of claims 1 to 7, characterized in that said fused section (3) is a shell of revolution, the cross-sectional area of the end of said fused section (3) connecting said first rigid shell (1) and said second rigid shell (2) being greater than the cross-sectional area of the other end.
9. A cable splice protection device according to any one of claims 1 to 7, characterised in that said fusion splicing section (3) is made of ethylene propylene diene monomer; and/or the first hard shell (1) and the second hard shell (2) are made of polyethylene.
10. A cable splice protection device according to any one of claims 1 to 7, characterized in that two of said fused sections (3) are fused to said first rigid shell (1) and said second rigid shell (2), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449315.XA CN111525490B (en) | 2020-05-25 | 2020-05-25 | Cable joint protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010449315.XA CN111525490B (en) | 2020-05-25 | 2020-05-25 | Cable joint protector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111525490A true CN111525490A (en) | 2020-08-11 |
| CN111525490B CN111525490B (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010449315.XA Active CN111525490B (en) | 2020-05-25 | 2020-05-25 | Cable joint protector |
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| CN (1) | CN111525490B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115347524A (en) * | 2022-10-19 | 2022-11-15 | 山东高速德建建筑科技股份有限公司 | Cable combination device for electromechanical installation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874880Y (en) * | 2006-07-26 | 2007-02-28 | 夏云杰 | Middle joint welding fitting for 66KV-500KV crosslink polyvinyl insulation power cable |
| CN203289059U (en) * | 2013-05-28 | 2013-11-13 | 叶绿野 | Muff-coupling anti-explosion box for intermediate joint of cable |
| CN205991265U (en) * | 2016-08-30 | 2017-03-01 | 温州捷高科技有限公司 | The gas-stealing prevention device of hot duct |
| CN107104413A (en) * | 2017-06-25 | 2017-08-29 | 国网江苏省电力公司扬州市江都区供电公司 | A kind of cable connector reinforcing device |
| CN110056722A (en) * | 2019-04-26 | 2019-07-26 | 四川航天建筑工程有限公司 | A kind of drainage pipeline and its construction method |
-
2020
- 2020-05-25 CN CN202010449315.XA patent/CN111525490B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2874880Y (en) * | 2006-07-26 | 2007-02-28 | 夏云杰 | Middle joint welding fitting for 66KV-500KV crosslink polyvinyl insulation power cable |
| CN203289059U (en) * | 2013-05-28 | 2013-11-13 | 叶绿野 | Muff-coupling anti-explosion box for intermediate joint of cable |
| CN205991265U (en) * | 2016-08-30 | 2017-03-01 | 温州捷高科技有限公司 | The gas-stealing prevention device of hot duct |
| CN107104413A (en) * | 2017-06-25 | 2017-08-29 | 国网江苏省电力公司扬州市江都区供电公司 | A kind of cable connector reinforcing device |
| CN110056722A (en) * | 2019-04-26 | 2019-07-26 | 四川航天建筑工程有限公司 | A kind of drainage pipeline and its construction method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115347524A (en) * | 2022-10-19 | 2022-11-15 | 山东高速德建建筑科技股份有限公司 | Cable combination device for electromechanical installation |
| CN115347524B (en) * | 2022-10-19 | 2022-12-20 | 山东高速德建建筑科技股份有限公司 | Cable combination device for electromechanical installation |
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| Publication number | Publication date |
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| CN111525490B (en) | 2021-11-16 |
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