CN112054446B - Connecting structure of tail pipe and protective layer of cable terminal and manufacturing method of connecting structure - Google Patents
Connecting structure of tail pipe and protective layer of cable terminal and manufacturing method of connecting structure Download PDFInfo
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- CN112054446B CN112054446B CN202010994627.9A CN202010994627A CN112054446B CN 112054446 B CN112054446 B CN 112054446B CN 202010994627 A CN202010994627 A CN 202010994627A CN 112054446 B CN112054446 B CN 112054446B
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- tail pipe
- lead sealing
- pipe
- protective layer
- sheath
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- 239000011241 protective layer Substances 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 85
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 26
- 239000010949 copper Substances 0.000 claims description 25
- 229910052802 copper Inorganic materials 0.000 claims description 25
- 239000010410 layer Substances 0.000 claims description 21
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004534 enameling Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
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Classifications
-
- 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
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the 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
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The invention relates to a connecting structure of a tail pipe and a protective layer of a cable terminal and a manufacturing method of the connecting structure. The first lead sealing part is arranged at the intersection of the tail pipe and the sheath, so that mechanical connection and electrical connection between the tail pipe and the sheath are realized, and the sealing property between the tail pipe and the sheath is improved. Meanwhile, the tail pipe and the protective layer are connected through the connecting band, so that the connection reliability of the tail pipe and the protective layer is further improved, and the cable terminal equipment has the characteristics of ensuring the reliable grounding of the protective layer and ensuring the safe operation of the cable terminal equipment.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a connecting structure of a tail pipe and a protective layer of a cable terminal and a manufacturing method of the connecting structure.
Background
At present, the overhead cable line is changed, the newly-built cable line shows explosive growth, and outdoor cable terminals are increased. Generally, a tail pipe is arranged at a cable terminal, when a cable is connected with a terminal device, a sheath layer positioned outside the cable is inserted into the tail pipe, and the sheath layer is electrically connected with the tail pipe, so that the sheath layer is grounded, and the safe and stable operation of the whole power system is ensured. The protective layer is a protective shell sleeved outside the cable and consists of an aluminum corrugated pipe and an outer sheath coated outside the corrugated pipe, and the outer sheath can be made of rubber and has waterproof and insulating functions. In order to realize reliable connection between the sheath and the tail pipe, the commonly adopted connection mode is to wire the intersection position of the sheath and the tail pipe so as to realize mechanical connection and electrical connection between the sheath and the tail pipe. However, the cable terminal site is affected by geological subsidence, displacement and the like, so that tensile stress exists between the sheath and the tail pipe, and the connection between the lead-lined layer and the sheath or the tail pipe is broken under the action of the tensile stress, so that the connection stability of the sheath and the tail pipe is affected.
Disclosure of Invention
The invention aims to provide a connecting structure of a tail pipe and a protective layer of a cable terminal and a manufacturing method of the connecting structure, which can ensure that the protective layer and the tail pipe are connected stably and the grounding reliability is high.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a connection structure of cable terminal tail pipe and sheath, the first end of tail pipe with cable terminal can dismantle the connection, the second end of tail pipe with the sheath is connected, connection structure includes first lead sealing portion, second lead sealing portion and connecting band, first lead sealing portion respectively with the second end of tail pipe with the sheath is connected, and makes the tail pipe with the sheath electricity is connected, second lead sealing portion is two, two second lead sealing portion set up respectively in the tail pipe with on the sheath, the both ends of connecting band pass through respectively the second lead sealing portion with the tail pipe with the sheath is connected.
Furthermore, the connecting bands are multiple and are uniformly distributed along the peripheries of the tail pipe and the protective layer respectively.
Furthermore, the both ends of connecting band still are provided with the tinned copper and prick the silk, the both ends of connecting band are passed through respectively the tinned copper is pricked the silk and is tied up the tail pipe with on the protective layer, just the tinned copper is pricked the silk and is inlayed and locate in the second lead sealing portion.
Further, the connecting band is provided with the kink, kink alternative extension to make the both ends of connecting band can keep away from each other.
Further, the connecting band is a copper braided band.
Further, the protective layer comprises a corrugated pipe and an outer sheath sleeved outside the corrugated pipe, the corrugated pipe extends to the outside of the outer sheath, the corrugated pipe is connected with the tail pipe through the first lead sealing part, a heat shrink pipe is arranged at the intersection of the end part of the outer sheath and the corrugated pipe, and two ends of the heat shrink pipe are respectively sleeved on the outer sheath and the corrugated pipe.
The manufacturing method of the connecting structure comprises the connecting structure of the tail pipe and the sheath of the cable terminal, and further comprises the following steps:
s1, stripping the outer sheath from one end of the protective layer close to the tail pipe to expose the corrugated pipe outside the outer sheath, and inserting the corrugated pipe into the tail pipe;
s2, welding a base coat on the corrugated pipe, wherein the base coat is positioned between the intersection of the tail pipe and the protective layer and one end of the connecting belt far away from the tail pipe, and filling and leveling the groove of the corrugated pipe through the base coat;
s3, coating lead at the intersection of the second end of the tail pipe and the corrugated pipe to form the first lead sealing part, bundling and fixing two ends of a connecting belt on the tail pipe and the corrugated pipe respectively through tinned copper binding wires, coating lead at two ends of the connecting belt to form the second lead sealing part, and covering the tinned copper binding wires with the second lead sealing part;
and S4, installing a heat-shrinkable tube, and sequentially winding a waterproof insulating tape and a PVC tape on the exposed corrugated tube.
Further, in step S2, the outer side surface of the base layer is parallel to the axis of the protective layer, and the outer side surface of the base layer protrudes out of the outer surface of the corrugated pipe.
Further, in step S3, before the first lead sealing portion is formed, one end of the connection tape is fixed to form the second lead sealing portion, and after the first lead sealing portion is formed, the other end of the connection tape is fixed to form the second lead sealing portion.
Further, in step S4, the waterproof insulating tape and the PVC tape are overlapped with the heat shrinkable tube, and the PVC tape covers the waterproof insulating tape.
Compared with the prior art, the invention has the beneficial effects that:
according to the connecting structure of the tail pipe and the protective layer of the cable terminal and the manufacturing method of the connecting structure, the first lead sealing part is arranged at the intersection of the tail pipe and the protective layer, so that mechanical connection and electric connection between the tail pipe and the protective layer are realized, the sealing property between the tail pipe and the protective layer is improved, and water vapor is prevented from entering the cable terminal. Meanwhile, the tail pipe and the protective layer are connected through the connecting band, so that the connection reliability of the tail pipe and the protective layer is further improved, and the cable terminal equipment has the characteristics of ensuring the reliable grounding of the protective layer and ensuring the safe operation of the cable terminal equipment.
Drawings
Fig. 1 is a sectional view of a connection structure of a tail tube and a sheath of a cable terminal according to an embodiment.
Fig. 2 is an enlarged view of the point i in fig. 1.
In the figure:
1. a tail pipe; 2. a protective layer; 21. a bellows; 22. an outer sheath; 3. a first lead sealing part; 4. a second lead sealing part; 5. a connecting belt; 6. priming a bottom layer; 7. heat shrink tubing; 8. a waterproof insulating tape; 9. PVC tape.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, the connection structure of the tail tube and the sheath of the cable terminal provided by the invention includes a first lead sealing part 3, a second lead sealing part 4 and a connection belt 5, wherein the first end of the tail tube 1 is detachably connected with the cable terminal, the second end of the tail tube 1 is connected with the sheath 2, the first lead sealing part 3 is respectively connected with the second end of the tail tube 1 and the sheath 2 and electrically connects the tail tube 1 with the sheath 2, the number of the second lead sealing parts 4 is two, the two second lead sealing parts 4 are respectively arranged on the tail tube 1 and the sheath 2, and two ends of the connection belt 5 are respectively connected with the tail tube 1 and the sheath 2 through the second lead sealing parts 4. It will be appreciated that the sheath 2 is a protective shell around the outside of the cable. In order to ensure the power transmission safety of the cable terminal equipment and the cable, the tail pipe 1 and the sheath 2 need to be grounded, the tail pipe 1 is installed on the cable terminal, and the tail pipe 1 is electrically connected with a grounding wire, so the sheath 2 is electrically connected with the tail pipe 1 through a connecting structure to realize the grounding of the sheath 2. In this embodiment, the sheath 2 includes a corrugated tube 21 for accommodating a cable and an outer sheath 22 sleeved outside the corrugated tube 21, the corrugated tube 21 is a conductor, the corrugated tube 21 is inserted into the tail tube 1, and lead lining is performed at an intersection position of the second end of the tail tube 1 and the corrugated tube 21 to form a first lead sealing portion 3, so that mechanical connection and electrical connection between the tail tube 1 and the sheath 2 are realized through the first lead sealing portion 3. Preferably, the first lead sealing part 3 extends from the second end part of the tail pipe 1 to the first end for a certain distance, and extends to one side away from the tail pipe 1 for a certain distance along the length direction of the corrugated pipe 21, and the distance extending in the two directions is not less than 50mm, so as to ensure the connection strength between the first lead sealing part 3 and the tail pipe 1 and the sheath 2. Meanwhile, the first lead sealing part 3 is coated at the second end part of the tail pipe 1 and the area of at least 50mm range at the two sides of the tail pipe, so that the gap at the intersection of the second end of the tail pipe 1 and the sheath 2 can be sealed, water vapor is prevented from entering the cable terminal through the gap, and the safe operation of power equipment is guaranteed. And a connecting band 5 is arranged between the protective layer 2 and the tail pipe 1, the connecting band 5 is a conductor, and two ends of the connecting band 5 are respectively fixed on the tail pipe 1 and the corrugated pipe 21 of the protective layer 2 through a second lead sealing part 4 so as to realize the electric connection of the tail pipe 1 and the protective layer 2. When the first lead sealing part 3 is broken due to tensile stress between the tail pipe 1 and the protective layer 2, the tail pipe 1 and the protective layer 2 can be electrically connected through the connecting belt 5, and the safe operation of the electric power equipment is ensured. The connection position of the end of the connection band 5 and the tail tube 1 and the corrugated tube 21 is provided with a second lead sealing part 4, and the structure enables the end of the connection band 5 to be embedded in the second lead sealing part 4, so as to improve the connection virtuous of the connection band 5 and the protective layer 2. In the embodiment, the first lead sealing part 3 is arranged at the intersection of the tail pipe 1 and the sheath 2, so that the mechanical connection and the electrical connection between the tail pipe 1 and the sheath 2 are realized, the sealing performance between the tail pipe 1 and the sheath 2 is improved, and water vapor is prevented from entering the cable terminal. Meanwhile, the tail pipe 1 and the protective layer 2 are connected through the connecting belt 5, so that the connection reliability of the tail pipe 1 and the protective layer 2 is further improved, and the grounding device has the characteristics of ensuring the reliable grounding of the protective layer 2 and ensuring the safe operation of cable terminal equipment.
Specifically, the number of the connection tapes 5 is plural, and the plural connection tapes 5 are uniformly distributed along the peripheral portions of the tail pipe 1 and the sheath 2, respectively. In this embodiment, there are four connecting bands 5, and the four connecting bands 5 are uniformly distributed along the periphery of the tail tube 1 and the sheath 2. Of course, the specific number of the connection strips 5 can be flexibly selected according to the specific specification of the connection strips 5 to ensure the reliability and safety of the electrical connection.
Specifically, the connection tape 5 is a copper braided tape. The copper braided strap is formed by braiding bare copper wires or tinned copper wires and has good flexibility. Since the sheath 2 is inserted into the tail pipe 1, the outer surface of the sheath 2 and the outer surface of the tail pipe 1 are not on the same water surface, and therefore, the sheath and the tail pipe are connected by a copper braided tape, and the tail pipe is easy to install.
Specifically, two ends of the connecting band 5 are further provided with tinned copper binding wires, two ends of the connecting band 5 are respectively bound on the tail tube 1 and the protective layer 2 through the tinned copper binding wires, and the tinned copper binding wires are embedded in the second lead sealing portion 4. In this embodiment, the connecting band 5 is bundled by a tinned copper wire so as to facilitate installation and construction.
Specifically, the connection band 5 is provided with a bent portion that is selectively extendable so that both ends of the connection band 5 can be distanced from each other. In this embodiment, the non-end position of the connecting band 5 is provided with a bent portion, the bent portion is U-shaped, the bent portion is disposed on one side of one of the second lead sealing portions 4 away from the other second lead sealing portion 4, and the U-shaped opening of the bent portion faces the second lead sealing portion 4. The connecting band 5 can be folded along the length direction thereof in a reciprocating manner to form the bending part, and the bending part can be unfolded when being pulled along the length direction of the connecting band 5, so that the tail tube 1 and the protective layer 2 are prevented from being pulled apart from the end part of the connecting band 5 when being displaced along the length direction due to external force, and the grounding reliability of the protective layer 2 is further prevented from being influenced.
In one embodiment, a reinforcing member is disposed between the tail pipe 1 and the sheath 2, the reinforcing member is sleeved on the sheath 2, and the periphery of the reinforcing member is connected to the tail pipe 1. It can be understood that the function of the reinforcement component is to fix the tail pipe 1 and the sheath, the reinforcement component is in a ring structure, the inner side of the reinforcement component is abutted against the periphery of the sheath 2, and the outer side of the reinforcement component is abutted against the inner wall of the tail pipe 1. Set up between tail pipe 1 and the aluminium pillar 2 and strengthen the subassembly, strengthen the subassembly and play the effect of fixing and fixing both, during the installation, the accessible is strengthened the subassembly and is made coaxial fixed between aluminium pillar 2 and the tail pipe 1, makes things convenient for subsequent plumbous operation of warding off. And when the electric connection terminal is displaced between the tail pipe 1 and the protective layer 2 due to geological subsidence, the tensile stress between the electric connection terminal and the tail pipe cannot be transmitted to the first lead sealing part 3 at the intersection of the tail pipe 1 and the protective layer 2 due to the reinforcing component, so that the first lead sealing part 3 is prevented from being broken, and the connection reliability between the protective layer 2 and the tail pipe 1 is further improved.
Specifically, the protective layer 2 includes a corrugated pipe 21 and an outer sheath 22 sleeved outside the corrugated pipe 21, the corrugated pipe 21 extends to the outside of the outer sheath 22, the corrugated pipe 21 is connected with the tail pipe 1 through the first lead sealing part 3, a heat shrinkable tube 7 is arranged at the intersection of the end part of the outer sheath 22 and the corrugated pipe 21, and two ends of the heat shrinkable tube 7 are respectively sleeved on the outer sheath 22 and the corrugated pipe 21. It is understood that the heat shrinkable tube 7 is a heat shrinkable tube made of a specific polyolefin material. When the sheath 2 is mounted, the outer jacket 22 at the end portion thereof needs to be peeled off so that the corrugated tube 21 is inserted into the tail tube 1 and electrically connected to the tail tube 1. In order to prevent the corrugated tube 21 from being exposed after the outer sheath 22 is stripped, the heat shrinkable tube 7 is arranged at the intersection of the outer sheath 22 and the corrugated tube 21, one end of the heat shrinkable tube 7 is sleeved on the outer sheath 22, and the other end is sleeved on the exposed corrugated tube 21, so that the stripping position of the protective layer 2 is sealed and protected.
Specifically, a first end of the connection band 5 is connected with the corrugated pipe 21, a second end of the connection band 5 is connected with the tail pipe 1, and both the first end and the second end of the connection band 5 are provided with the second lead sealing part 4. And a waterproof insulating tape 8 and a PVC tape 9 are sequentially wound between the second lead sealing part 4 at the first end of the connecting tape and the heat shrinkable tube 7. The waterproof insulating tape 8 and the PVC tape 9 mainly provide insulation protection and waterproof protection for the corrugated tube 21 exposed at that position. The waterproof insulating tape 8 and the PVC tape 9 are lapped with the heat shrinkable tube 7, and the lapping length is 50 mm-60 mm.
The remarkable effects of the embodiment are as follows: the first lead sealing part 3 is arranged at the intersection of the tail pipe 1 and the sheath 2, so that mechanical connection and electric connection between the tail pipe 1 and the sheath 2 are realized, the sealing performance between the tail pipe 1 and the sheath 2 is improved, and water vapor is prevented from entering a cable terminal. Meanwhile, the tail pipe 1 and the protective layer 2 are connected through the connecting belt 5, so that the connection reliability of the tail pipe 1 and the protective layer 2 is further improved, and the grounding device has the characteristics of ensuring the reliable grounding of the protective layer 2 and ensuring the safe operation of cable terminal equipment.
The manufacturing method of the connecting structure comprises the connecting structure of the tail pipe and the protective layer of the cable terminal, and comprises the following specific steps:
s1, stripping the outer jacket 22 from the end of the sheath 2 close to the tail pipe 1 to expose the corrugated pipe 21 outside the outer jacket 22, and inserting the corrugated pipe 21 into the tail pipe 1;
s2, welding a primer layer 6 on the corrugated pipe 21, wherein the primer layer 6 is positioned between the intersection of the tail pipe 1 and the protective layer 2 and one end of the connecting belt 5 far away from the tail pipe 1, and filling the groove of the corrugated pipe 21 through the primer layer 6;
and S3, forming a first lead sealing part 3 by coating lead at the intersection of the second end of the tail pipe 1 and the corrugated pipe 12, respectively binding and fixing the two ends of the connecting belt 5 on the tail pipe 1 and the protective layer 2 through tinned copper binding wires, forming a second lead sealing part 4 by coating lead at the two ends of the connecting belt 5, and covering the tinned copper binding wires with the second lead sealing part 4.
S4, installing the heat shrinkable tube 7, and sequentially winding a waterproof insulating tape and a PVC tape on the exposed corrugated tube 21.
In this embodiment, the sheath 2 includes a corrugated tube 21 and an outer sheath 22 sleeved outside the corrugated tube 21, and the cable is inserted into the corrugated tube 21. The outer sheath 22 is made of rubber materials, the corrugated pipe 21 is made of aluminum, and the corrugated pipe 21 is connected with the tail pipe 1 to achieve an electric path, so that the protective layer 2 is grounded. When manufacturing, the outer jacket 22 at one end of the protective layer 2 is stripped off to a length of 80mm, so as to expose the corrugated tube 21. The surface of the corrugated tube 21 is cleaned, the corrugated tube 21 is inserted into the tail pipe 1, and the corrugated tube 21 is fixed to the tail pipe 1. The base coat 6 is welded to the outer surface of the corrugated tube 21 by using an aluminum welding rod, and the corrugated groove of the corrugated tube 21 is filled up by the base coat 6. The primer layer 6 is arranged between the intersection of the tail pipe 1 and the corrugated pipe 21 and the first end of the connecting belt 5, so that a first lead sealing part 3 and a second lead sealing part 4 at the first end of the connecting belt 5 are formed on the primer layer 6 in a lead lining mode. The four connection bands 5 are uniformly arranged along the circumference of the sheath 2, and the first ends of the connection bands 5 and the primer layer 6 on the corrugated tube 21 are bundled together using tin-plated and tin-plated copper binding wires. And (3) coating lead at the intersection of the tail pipe 1 and the corrugated pipe 21 and areas on two sides of the intersection to form a first lead sealing part 3, wherein the overlapping length of two ends of the first lead sealing part 3 with the tail pipe 1 and the bottom layer 6 is more than 30 mm. And meanwhile, the first end of the connecting band 5 is enameled with lead to form a second lead sealing part 4, and the second lead sealing part 4 covers the tinned copper binding wire completely. The connecting band 5 is folded to form a bending part, and the length of the bending part is not less than 20 mm. And then, connecting the second end of the connecting band 5 with the tail tube 1 through a tinned copper binding wire, and enameling lead at the joint to form a second lead sealing part 4. The distance between the second end of the connecting band 5 and the first lead sealing part 3 is 10-50 mm. Finally, the heat shrinkable tube 7 is installed, and both ends of the heat shrinkable tube 7 are respectively sleeved on the corrugated tube 21 and the outer sheath 22. A waterproof tape, a PVC tape and a waterproof insulating tape are sequentially wound on the exposed corrugated tube 21 and the primer layer 6 to perform waterproof protection and insulation protection of the sheath.
Specifically, in step S2, the outer side surface of primer layer 6 is parallel to the axis of sheath 2, and the outer side surface of primer layer 6 protrudes from the outer surface of bellows 21. In this embodiment, the priming layer 6 is parallel to the axis of the sheath 2 to eliminate the groove on the corrugated tube 21, thereby facilitating the subsequent lead-coating. The minimum value of the distance between the upper surface of the primer layer 6 and the corrugated tube 21 is 3 mm.
Specifically, in step S3, one end of the connection tape 5 is fixed and the second lead sealing portion 4 is formed before the first lead sealing portion 3 is formed, and the other end of the connection tape 5 is fixed and the second lead sealing portion 4 is formed after the first lead sealing portion 3 is formed. It can be understood that this mode facilitates the simultaneous operation of the first lead sealing part 3 and the second lead sealing part 4 close to the first lead sealing part 3, and improves the working efficiency. Of course, in other embodiments, the first lead sealing portion 3 may be formed first, and then the second lead sealing portion 4 may be formed.
Specifically, in step S4, the waterproof insulating tape and the PVC tape are overlapped with the heat shrinkable tube 7, and the PVC tape covers the waterproof insulating tape. . This helps to ensure the sealing property of the peeling position of the sheath 2 and to prevent the occurrence of water leakage.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (6)
1. A manufacturing method of a connecting structure is used for manufacturing a connecting structure of a tail pipe and a protective layer of a cable terminal, wherein the first end of the tail pipe is detachably connected with the cable terminal, the second end of the tail pipe is connected with the protective layer, the connecting structure comprises a first lead sealing part, a second lead sealing part and a connecting belt, the first lead sealing part is respectively connected with the second end of the tail pipe and the protective layer and enables the tail pipe to be electrically connected with the protective layer, the number of the second lead sealing parts is two, the two second lead sealing parts are respectively arranged on the tail pipe and the protective layer, two ends of the connecting belt are respectively connected with the tail pipe and the protective layer through the second lead sealing part, tinned copper binding wires are further arranged at two ends of the connecting belt, the two ends of the connecting belt are respectively bound on the tail pipe and the protective layer through the tinned copper binding wires, and the tinned copper binding wires are embedded in the second lead sealing parts, the protective layer comprises a corrugated pipe and an outer sheath sleeved outside the corrugated pipe, the corrugated pipe extends to the outside of the outer sheath, the corrugated pipe is connected with the tail pipe through the first lead sealing part, a heat shrink pipe is arranged at the intersection of the end part of the outer sheath and the corrugated pipe, and two ends of the heat shrink pipe are respectively sleeved on the outer sheath and the corrugated pipe, and the method is characterized by comprising the following steps:
s1, stripping an outer sheath from one end of the protective layer close to the tail pipe to expose the corrugated pipe outside the outer sheath, and inserting the corrugated pipe into the tail pipe;
s2, welding a base coat on the corrugated pipe, wherein the base coat is positioned between the intersection of the tail pipe and the protective layer and one end of the connecting belt far away from the tail pipe, and filling and leveling the groove of the corrugated pipe through the base coat;
s3, forming the first lead sealing part by coating lead at the intersection of the second end of the tail pipe and the corrugated pipe, respectively binding and fixing the two ends of the connecting belt on the tail pipe and the corrugated pipe through the tinned copper binding wire, and forming the second lead sealing part by coating lead at the two ends of the connecting belt, wherein the tinned copper binding wire is covered by the second lead sealing part;
s4, installing the heat-shrinkable tube, and sequentially winding a waterproof insulating tape and a PVC tape on the exposed corrugated tube;
in step S3, the second lead sealing portion is formed by fixing one end of the connection tape before the first lead sealing portion is formed, and the second lead sealing portion is formed by fixing the other end of the connection tape after the first lead sealing portion is formed.
2. The method for manufacturing a connection structure according to claim 1, wherein the connection strips are a plurality of connection strips, and the plurality of connection strips are uniformly distributed along the peripheries of the tail tube and the sheath, respectively.
3. The method for manufacturing a connection structure according to claim 1, wherein the connection band is provided with a bent portion, and the bent portion is selectively extendable so that two ends of the connection band can be away from each other.
4. The method of manufacturing a connection structure according to any one of claims 1 to 3, wherein the connection tape is a copper woven tape.
5. The method of claim 1, wherein in step S2, the outer side of the primer layer is parallel to the axis of the sheath, and the outer side of the primer layer protrudes from the outer surface of the corrugated pipe.
6. The method of claim 1, wherein in the step S4, the waterproof insulating tape and the PVC tape are overlapped with the heat shrinkable tube, and the PVC tape covers the waterproof insulating tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010994627.9A CN112054446B (en) | 2020-09-21 | 2020-09-21 | Connecting structure of tail pipe and protective layer of cable terminal and manufacturing method of connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010994627.9A CN112054446B (en) | 2020-09-21 | 2020-09-21 | Connecting structure of tail pipe and protective layer of cable terminal and manufacturing method of connecting structure |
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| Publication Number | Publication Date |
|---|---|
| CN112054446A CN112054446A (en) | 2020-12-08 |
| CN112054446B true CN112054446B (en) | 2022-02-11 |
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| CN202010994627.9A Active CN112054446B (en) | 2020-09-21 | 2020-09-21 | Connecting structure of tail pipe and protective layer of cable terminal and manufacturing method of connecting structure |
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| CN206388875U (en) * | 2016-09-30 | 2017-08-08 | 3M创新有限公司 | Cable grounding device and power cable system |
| CN207368584U (en) * | 2017-08-24 | 2018-05-15 | 长园电力技术有限公司 | Crosslinking polyethylene-insulated cable insulation shields isolating joint |
| CN109962442A (en) * | 2019-03-21 | 2019-07-02 | 上海三原电缆附件有限公司 | A kind of sealing structure of plastic-aluminum combined sheath high-voltage cable joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204190342U (en) * | 2014-09-25 | 2015-03-04 | 江苏远航电缆附件有限公司 | Novel 110kV and above composite sheath terminal tail pipe |
| CN207691397U (en) * | 2018-02-12 | 2018-08-03 | 江苏远航电缆附件有限公司 | A kind of 110kV dry outdoor terminals tail pipe |
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| US6025560A (en) * | 1997-11-28 | 2000-02-15 | Alcatel | Outer protection with shield-break for high-voltage cable joint |
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