CN102263394A

CN102263394A - Waterproof method of thermal contraction cable middle joint

Info

Publication number: CN102263394A
Application number: CN2010102006432A
Authority: CN
Inventors: 胡平; 高玉峰; 高承华; 周和平
Original assignee: Shenzhen Woer Heat Shrinkable Material Co Ltd
Current assignee: Shenzhen Woer Heat Shrinkable Material Co Ltd
Priority date: 2010-05-27
Filing date: 2010-05-27
Publication date: 2011-11-30
Anticipated expiration: 2030-05-27
Also published as: CN102263394B

Abstract

The invention relates to a waterproof method of a thermal contraction cable middle joint. In order to overcome the problem that radial water seepage is easy to occur during a process of manufacturing the thermal contraction cable middle joint at the present stage, the invention provides a waterproof method of a thermal contraction cable middle joint, and the waterproof method mainly comprises the following steps: 1, cutting a cable over sheath, a steel armour, an inner sheath, a copper shield layer one by one; 2, sleeving the middle joint and a copper shield copper net; 3, pressing a connecting tube; 4, shrinking a middle head; 5, installing the copper shield net and a ground wire; 6, manufacturing a new inner sheath, and connecting ground wires at two ends and twisting a waterproof glue belt; 7, installing an armouring tape. The waterproof method is characterized in that the step 6 comprises the following steps: A, winding by use of a PVC (polyvinyl chloride) strap; B, axially coating a sealing gum on the inner sheath port of the two ends of the cut on a cable; C, sleeving an integral waterproof bag ( special and enhanced PVC membrane) at a cable joint and causing the two ports of the waterproof PVC bag and the sealing gum to be subjected to attached splicing; D, further winding a waterproof strap on the outside of the integral waterproof PVC bag; and E, connecting ground wires at the two ends and then winding the waterproof glue belt. The middle joint manufactured by the waterproof method provided by the invention has the advantages that the waterproof property is further enhanced, and the serviceability of the cable is enhanced.

Description

A kind of waterproof method of shrinkage cable intermediate joint

Technical field

The present invention relates to a kind of cable joint waterproof method, relate in particular to a kind of waterproof method of shrinkage cable intermediate joint.

Background technology

At present, the waterproof of shrinkage cable intermediate joint may further comprise the steps: 1. with cable jacket, steel armour, sheath, copper shield one by one stripping fall, 2. be inserted in transition joint and shielding copper mesh, 3. crimping tube connector, 4. contraction medial head, 5. copper shield net and ground wire are installed, are 6. twined and twine water blocking tape and make new sheath, connect the two ends ground wire and twine adhesive waterproof tape, armoring tape 7. is installed at skin with the PVC band; Problem is, in the 6th step, twine the new sheath that water blocking tape is made with the winding of PVC band and at skin, because all being from coil to coils, PVC take-up strap and water blocking tape twine, thereby be easy to generate radially infiltration in the lap-joint of circle and circle, when having water leakage, it is creepage that the interface takes place easily for cable insulation and shrinkage cable intermediate joint, influences cable and normally use.

Summary of the invention

When making the new sheath of shrinkage cable intermediate joint, be easy to generate radially infiltration in order to overcome present stage, it is creepage that the interface takes place easily for cable insulation and shrinkage cable intermediate joint, thereby influence the normal problem of using of cable, the present invention proposes a kind of waterproof method of shrinkage cable intermediate joint, its technical scheme is when making new sheath, except at first twining with the PVC band, also at an integral type waterproof of the outside of PVC take-up strap socket PVC bag (special strengthening membrane) and make two ports of waterproof PVC bag attach adhering and sealing, at last again at integral type waterproof PVC bag outside winding water blocking tape with fluid sealants and former sheath.

The technical solution adopted for the present invention to solve the technical problems, a kind of waterproof method of shrinkage cable intermediate joint, mainly may further comprise the steps: 1. with cable jacket, the steel armour, sheath, copper shield stripping one by one falls, 2. be inserted in transition joint and shielding copper mesh, 3. crimping tube connector, 4. contraction medial head, 5. copper shield net and ground wire are installed, 6 make new sheath, connect the two ends ground wire and twine adhesive waterproof tape, 7. installation armoring tape, it is characterized in that: step 6 may further comprise the steps: A. twines with the PVC band, B. the sheath port at the cut cable two ends axially is coated with fluid sealant, C. integral type waterproof bag of socket and make two ports of waterproof PVC bag and fluid sealant attaches bondingly, D. twines water blocking tape in integral type waterproof PVC bag outside again, and E connects the two ends ground wire and twines adhesive waterproof tape again.

Beneficial effect, the present invention proposes a kind of waterproof method of shrinkage cable intermediate joint, because when making new sheath, increase an integral type waterproof PVC bag, therefore, the shrinkage cable intermediate joint water resistance of making is further strengthened, and improves the reliability that cable uses.

Embodiment

Fig. 1 to Fig. 5 is the schematic diagram of one embodiment of the invention, and wherein Fig. 1 finishes schematic diagram after the 1st to the 5th step for the present invention, and Fig. 2 to Fig. 4 is the schematic diagram of the present invention's the 6th step, and Fig. 5 is the schematic diagram of the present invention's the 7th step.

Among the figure, 1.1,1.2 cable jackets, 2.1,2.2 cable armouring bands, 3.1,3.2 sheaths, 4.1,4.2,4A copper shield net, 5.1,5.2 constant force springs, 6 ground wires, 7.PVC band, 8.1,8.2 fluid sealants, 9 integral type waterproof bags, 10 water blocking tapes, 11 armoring tapes.

Fig. 1 to Fig. 5 is the schematic diagram of one embodiment of the invention, the waterproof method of a kind of shrinkage cable intermediate joint that present embodiment proposes mainly may further comprise the steps: 1. with cable jacket, the steel armour, sheath, copper shield stripping one by one falls, 2. be inserted in transition joint and shielding copper mesh, 3. crimping tube connector, 4. contraction medial head, 5. copper shield net and ground wire are installed, 6 make new sheath, connect the two ends ground wire and twine adhesive waterproof tape, 7. installation armoring tape, it is characterized in that: the 6th step may further comprise the steps: A. twines with the PVC band, B. the sheath port at the cut cable two ends axially is coated with fluid sealant, gluing length is 50mm preferably, C. at an integral type waterproof of cable joint place socket PVC bag (special strengthening membrane) and make two ports of waterproof PVC bag and fluid sealant attach bonding, D. twine water blocking tape in integral type waterproof PVC bag outside again, E. connects the two ends ground wire and twines adhesive waterproof tape again.

Wherein, Fig. 1 finishes schematic diagram after the 1st to the 5th step for the present invention, show that in Fig. 1 after finishing the 1st to the 5th step, the structure of middle connector comprises successively from both sides toward the centre: cable jacket 1.1,1.2, cable armouring band 2.1,2.2, sheath 3.1,3.1, copper shield net 4.1,4.2,4A, constant force spring 5.1,5.2, ground wire 6, wherein copper shield net 4A and ground wire 6 are finished in the 5th step;

Fig. 2 to Fig. 4 makes the schematic diagram of new sheath for the present invention's the 6th step, from figure, show, the 6th step may further comprise the steps: A. is with 7 to twine with PVC, B. the sheath port at the cut cable two ends axially is coated with fluid sealant 8.1,8.2, gluing length is 50mm preferably, C. at an integral type waterproof of cable joint place socket PVC bag 9 and make two ports of waterproof PVC bag and fluid sealant 8.1 and 8.2 attach bonding, D. twine water blocking tape 10 again in integral type waterproof PVC bag 9 outsides, E. connects the two ends ground wire and twines adhesive waterproof tape 10;

Fig. 5 is the schematic diagram of the present invention's the 7th step.Fig. 1 finishes schematic diagram after first to the 5th step for the present invention, and as can be seen from the figure, the 7th step comprises installs armoring tape 11.

Claims

1. the waterproof method of a shrinkage cable intermediate joint, mainly may further comprise the steps: 1. with cable jacket, the steel armour, sheath, copper shield stripping one by one falls, 2. be inserted in transition joint and shielding copper mesh, 3. crimping tube connector, 4. contraction medial head, 5. copper shield net and ground wire are installed, 6 make new sheath, connect the two ends ground wire and twine adhesive waterproof tape again, 7. installation armoring tape, it is characterized in that: step 6 may further comprise the steps: A. twines with the PVC band, B. the sheath port at the cut cable two ends axially is coated with fluid sealant, C. integral type waterproof bag of socket and make two ports of waterproof PVC bag and fluid sealant attach bonding, D. twine water blocking tape in integral type waterproof PVC bag outside again, E. connects the two ends ground wire and twines adhesive waterproof tape again.