CN2593429Y

CN2593429Y - Ultrahigh voltage cablejoint sealing protection box

Info

Publication number: CN2593429Y
Application number: CN 02260966
Authority: CN
Inventors: 魏东; 徐操; 冯岗; 张明生; 杨文妃
Original assignee: Sanyuan Cable Accessory Co Sha
Current assignee: Shanghai Sanyuan Cable Accessories Co., Ltd.
Priority date: 2002-10-24
Filing date: 2002-10-24
Publication date: 2003-12-17
Anticipated expiration: 2012-10-24

Abstract

The utility model relates to a cable joint sealing device, more specifically, an assembly type cable joint sealing protecting box with ultra-high voltage (XLPE). The utility model comprises two prefabricated components 1 and 2 or 3, wherein, the component 1 is composed of copper pipes and a copper flange which are welded, wherein, the copper pipe 11 is matched with the outer diameter of a cable joint, and a transition copper flange 12 and a copper pipe 13 are matched with the outer diameter of the cable joint. An insulating outer protecting jacket 14 is tightly coated on the outer surface of the copper pipe segment 13, the insulating outer protecting jacket 14 and the copper pipe segment 13 are formed into an integral body, the end heads of the outer protecting jacket are embedded by the other insulating material 15, and the end heads of the outer protecting jacket, the insulating outer protecting jacket 14 and the surface of the copper pipe 11 are tightly connected. The component 2 is composed of a copper flange, a copper pipe and a synthetic insulating material, a copper flange 21 and the component 1 are connected, a copper pipe 22 segment is matched with the outer diameter of the cable joint, and the copper flange 21 and the copper pipe 22 segment are tightly connected by a synthetic insulating material 23 through a moulding method. The device is connected by the end parts of the two prefabricated components 1, 2 and the prefabricated connecting pieces 13, 21, the insulating outer protecting jackets 14, 23 of the two components are connected by the other prefabricated insulating protecting jacket, and the two components are sealed and assembled. The utility model has the advantages that components are few, the device is suitable for factory prefabricating production, the requirement of installation personnel is low, electric property is good, the work procedure of installation is simple, etc.

Description

Ultra-high voltage electric cable joint seal protection box

One, technical field:

The utility model relates to a kind of cable joint sealing device; more specifically be meant assembled superhigh pressure (XLPE) cable joint seal protection box; be applicable to ultrahigh voltage power cable joint seal protection; it is few to have parts; the suitable prefabricated production of batch production; the installer is required low, excellent electrical properties, advantage such as installation procedure is simple.

Two, background technology:

Because superhigh pressure (XLPE) cable joint is an important accessory in the power transmission line, transmission of electricity plays an important role to safety.And these joint work at present are by the joint installation personnel, assemble in the cable erecting bed.These joint components, comprise joint installation personnel copper pipe, brass tube, dead ring, seal washer, pad fiber glass epoxy shell on-the-spot welding or that be screwed assembling, connector, screw part, heat-shrink tube, insulating cement adhesive tape, and a large amount of waterproof packing materials that need cast-in-site.

This cable joint mode be difficult for to be installed, and its sealing property depends primarily on the experience and the qualification of joint installation personnel.

Three, summary of the invention:

Key to be solved in the utility model is that with minimum parts the factory prefabricating production with maximum reduces the requirement of butt joint installation personnel, thereby overcomes the defective of existing joint protection box.

To achieve these goals, the utility model comprises two pre-constructed units.Be characterized in: this device is made up of the pre-constructed unit of two sealed attachment.Each pre-constructed unit comprises a hardware and a prefabricated insulation outer jointing jacket that joins together with same hardware.Above-mentioned two pre-constructed units assembling forms cable joint seal protection box, and its mutual sealed attachment of prefabricated insulation outer jointing jacket separately, and the insulation outer jointing jacket of formation cable joint seal protection box integral body.

Described superhigh pressure (XLPE) cable joint seal protection box; one of them pre-constructed unit is respectively applied for and is connected and copper flange that transition is used is welded with two by the copper pipe of two kinds of different sizes; and, coat the last layer synthetic insulating material with the method that extrudes and make in this steel structure outside.Another pre-constructed unit, its hardware is made of copper pipe and the welding of copper flange, and on this hardware, insulation outer jointing jacket in the coating.This outer jointing jacket is that the method that adopts mould to annotate is made, and can also combine closely with copper pipe and copper flange, and enough hardness is arranged, and satisfies necessary mechanical strength, and it is played a protective role to cable joint.

Above-mentioned superhigh pressure (XLPE) cable joint seal protection box is to be assembled by above-mentioned two pre-constructed units, and point of attachment adopts the sealing of " O " RunddichtringO, and connects with trip bolt.The insulation outer jointing jacket of two pre-constructed units is with an optional feature sealed attachment.

This superhigh pressure (XLPE) cable joint seal protection box according to the actual installation needs, can be divided into two kinds of different assembling modes.

First kind of fit: one of them pre-constructed unit is connected by the copper flange by the copper pipe of two sections different-diameters.The diameter of one section copper pipe and the cable size of joint are complementary, and another section copper pipe diameter and rubber prefabricated component external diameter are complementary.Another pre-constructed unit is made up of copper flange and one section copper pipe.Wherein the copper flange connects with above-mentioned pre-constructed unit, and the cable size of one section copper pipe diameter and joint is complementary.On this pre-constructed unit, two coupling arrangements are arranged in addition, can distinguish the external coordinated transposition inside and outside core of coaxial cable, thereby satisfy the electric requirement on the circuit.

Second kind of fit: one of them parts with aforementioned in one identical.Another pre-constructed unit is made up of copper flange and one section copper pipe.Wherein the copper flange connects with above-mentioned prefabricated components, and the cable size of one section copper pipe diameter and joint is complementary.

Four, description of drawings:

Accompanying drawing 1 is first kind of package assembly schematic diagram of the utility model

Accompanying drawing 2 is first pre-constructed unit enlarged diagrams of Fig. 1

Accompanying drawing 3 is second pre-constructed unit enlarged diagram of Fig. 1

Accompanying drawing 4 is second kind of package assembly schematic diagram of the utility model

Accompanying drawing 5 is second pre-constructed unit enlarged diagram of Fig. 4

In Fig. 1: A, cable B, cable 1, pre-constructed unit 12, pre-constructed unit 24, trip bolt 5, " O " RunddichtringO 11, copper pipe 12, transition copper flange 13, copper pipe 14, insulation outer jointing jacket 15, composite insulation Embedding Material 21, copper flange 22, copper pipe 23, insulation outer jointing jacket 24, external cable connector 25, external cable connector

In Fig. 4: A, cable B,

cable

11,12,13,14,15, constitute pre-constructed unit 1 with shown in Figure 13, pre-constructed unit 3 31, copper flange 32, copper pipe 33, insulation outer jointing jacket

Five, embodiment:

First execution mode:

With reference to the accompanying drawings 1, this execution mode is: with

pre-constructed unit

1,2, be assembled in respectively on two sections cable A, B of joint.Pre-constructed unit 1, be inserted in pre-constructed unit 2 again.Sealing between them is by the sealing of " O " RunddichtringO.By the copper pipe 13 in the pre-constructed unit 1, connect with copper flange 21 in the pre-constructed unit 2, and be fixedly connected between them with trip bolt.The insulation outer jointing jacket of

pre-constructed unit

1,2 by another prefabricated insulation protective jacket 6 sealed attachment that add, forms this superhigh pressure (XLPE) cable joint seal protection layer box, whole insulation outer jointing jacket.

Second execution mode:

With reference to the accompanying drawings 4, this execution mode comprises pre-constructed unit 1,3.With

pre-constructed unit

1,3, be assembled in respectively on two sections cable A, B of joint.Sealing between them and connection are identical with above-mentioned first kind of assembling mode.

Describe in this superhigh pressure (XLPE) cable joint seal protection box the structure of each pre-constructed unit and manufacture craft in detail with reference to accompanying drawing.

Parts 1 can show from the Fig. 2 that amplifies, and it is mainly made with synthetic insulating material by a hardware and one.And be with synthetic insulating material, be coated on outside the hardware, form the insulation outer jointing jacket.Hardware is by two sections, and drawing copper pipe that diameter is different and the welding of copper flange are made.Wherein copper pipe 11, are assembled on the cable of joint, and the diameter between them need match each other, and 12 are transition copper flange, and copper pipe 13 in the hardware, are assembled in outside the cable joint, and the diameter between them need match each other.And insulation outer jointing jacket 14 is with the method manufacturing that extrudes.Be that synthetic insulating material passes through special-purpose extrusion equipment, extrude, it closely is coated on the hardware through special-purpose extrusion die.With such manufacturing process, guarantee fund's metal elements no longer separates with the synthetic insulating material of extruding.And it is after the assembling of cable joint seal protection box, also not separated under the working temperature of maximum.In the end of pre-constructed unit 1, with another kind of synthetic insulating material 15 embeddings, and an insulation outer jointing jacket 14 is linked together with copper pipe 11.Thereby make the insulation outer jointing jacket of pre-constructed unit 1, can realize batch production production farthest.

Parts 2 can show that it is made of two copper pipes that are mutually independent 22, copper flange 21, uses a kind of synthetic insulating material from the Fig. 3 that amplifies, these two hardwares are isolated mutually, form insulation outer jointing jacket 23, simultaneously they closely are linked together.Copper pipe 22 is assembled on the cable of joint, and the diameter between them needs coupling mutually, and copper flange 21 connects with pre-constructed unit 1.Pre-constructed unit 2 is to make of the manufacturing process that mould is annotated, and selected synthetic insulating material is fluid state in process of production, through injection molding sclerosis aftershaping, and enough mechanical strengths is arranged, and fully satisfies the instructions for use of this joint sealing protection box.

Parts 3 can show from the Fig. 5 that amplifies, and it is mainly made with synthetic insulating material by a hardware and one.And be with synthetic insulating material, be coated on outside the hardware, form the insulation outer jointing jacket.Hardware is by copper pipe 32 and copper flange 31, by being welded.Wherein copper pipe 32, are assembled on the cable of joint, and the diameter between them needs coupling mutually, and copper flange 31 connects with pre-constructed unit 1.The making of outer jointing jacket is identical with the manufacture method of pre-constructed unit 2.Enough mechanical strengths are arranged, fully satisfy the instructions for use of this joint sealing protection box.

In addition, in two kinds of installations, the prefabricated insulation protective jacket that adds is that adhesive tape and heat-shrinkable tube are formed in the above.Hardware in the pre-constructed unit can be selected the manufacturing of copper section bar for use, also can select other nonmagnetic material manufacturing for use.

Claims

1, a kind of superhigh pressure (XLPE) cable joint seal protection box, comprise pre-constructed unit (1) and (2) or (3), it is characterized in that: pre-constructed unit (1), the metalwork that is welded to form by copper pipe, copper flange respectively, and the prefabricated insulation outer jointing jacket that is coated on the metalwork outer surface makes, and prefabricated components (2), (3) are made of metalworks such as copper pipe, copper flanges, make with the synthetic insulating material close-coupled, assemble described prefabricated components (1), (2); (1), (3), form two kinds of superhigh pressure (XLPE) cable joint seal protection box, and its prefabricated outer jointing jacket separately, connect by another prefabricated insulation protective jacket, constitute the insulation outer jointing jacket of whole superhigh pressure (XLPE) cable joint seal protection box.

2, ultra-high voltage electric cable joint seal protection box according to claim 1; it is characterized in that: copper pipe (13) in the pre-constructed unit (1); seal by " O " RunddichtringO (5); be inserted in the copper flange (21) in the prefabricated components (2) respectively or in the copper flange (31) in the prefabricated components (3); and in bonding pad usefulness trip bolt (4) connection; the prefabricated insulation outer jointing jacket of the seal protection box of two kinds of joints is by another prefabricated insulating case (6) sealed attachment.

3, ultra-high voltage electric cable joint seal protection box according to claim 1 is characterized in that: hardware in each prefabricated components, adopt the drawing copper pipe and the copper flange of different size to make by welding.

4, ultra-high voltage electric cable joint seal protection box according to claim 1 is characterized in that: the described prefabricated insulation outer jointing jacket of prefabricated components (1) closely is coated on the copper pipe (13) termination synthetic insulating material (15) embedding.

5, ultra-high voltage electric cable joint seal protection box according to claim 1 is characterized in that: described prefabricated components (2), (3), hardware and the synthetic insulating material made by welding.

6, ultra-high voltage electric cable joint seal protection box according to claim 1 is characterized in that: between the copper flange (21) of described prefabricated components (2), the copper pipe (22), keep certain intervals, and be spaced from each other with synthetic material (23).