CN216699469U

CN216699469U - Cable joint explosion-proof blanket

Info

Publication number: CN216699469U
Application number: CN202123142061.6U
Authority: CN
Inventors: 毛厚钟; 郑启帆; 黄小云; 肖阳春; 陈金星; 谢道国; 张嘉翔; 刘俊杰; 钟其达; 陈小勇; 董欣楠; 郑敏杨; 阮东
Original assignee: State Grid Fujian Electric Power Co Ltd; Ningde Power Supply Co of State Grid Fujian Electric Power Co Ltd
Current assignee: State Grid Fujian Electric Power Co Ltd; Ningde Power Supply Co of State Grid Fujian Electric Power Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-06-07
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses an explosion-proof blanket for a cable joint, which comprises a closed sleeve body formed by a silicon rubber composite cloth layer and a second oxford cloth layer, wherein the inside of the sleeve body is sequentially connected with an explosion-proof blanket main body, a sand layer, a first oxford cloth layer and a fire extinguishing powder layer from top to bottom; the fire extinguishing powder layer is connected with the second oxford fabric layer.

Description

Cable joint explosion-proof blanket

Technical Field

The utility model belongs to the technical field of cable explosion prevention, and particularly relates to an explosion-proof blanket for a cable joint.

Background

At present, the operation of the intermediate joint of the distribution network cable is carried out in a cable pipe trench or a cable working well, and other cables in the working well are in running states except for operation cables. The cable intermediate head of long-term operation causes the cable intermediate head to generate heat and insulation resistance to reduce because of factors such as the joint crimping is not tight, interphase insulation is ageing, the intermediate head is intake, can take place the risk of intermediate head explosion even, produces electric arc and huge shock wave during the explosion, will produce serious security threat to the operating personnel in the well.

The explosion-proof box of cable intermediate head is the explosion-proof box of stereoplasm at present, mostly is the metal material or glass steel material, and the metal material is perishable, and the glass steel material is easily ageing, and two kinds of materials all have the condition that long-term operation loses the guard action. A glue pouring process is adopted in part of the anti-explosion box, and although the process can achieve the anti-explosion and flame-retardant effects of the cable intermediate joint, the process prevents the cable intermediate joint from radiating and exhausting and influences the service life of the cable intermediate joint; and the glue pouring process often causes the condition of uneven glue pouring, and even cannot play the role of explosion prevention and flame retardance.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an explosion-proof blanket for a cable joint, which has excellent insulating, flame-retardant and explosion-proof performances, plays a role in damping the explosion of the intermediate joint, prolongs the explosion energy release time of the intermediate joint, and can effectively extinguish the fire of the cable joint before the explosion. Meanwhile, the flexible material has strong adaptability to complex environments in the working well, is easy to install, can be installed by one to a plurality of sets according to the type of field equipment and safety requirements, and is safe and portable when personnel leave the working well to disassemble the explosion-proof shield. The novel flexible explosion-proof shield can solve the problem that the traditional hard intermediate head explosion-proof box is difficult to be changed in an electrified way and generates secondary damage.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an explosion-proof blanket for a cable joint comprises a closed sleeve body formed by a silicon rubber composite cloth layer and a second oxford cloth layer, wherein the inside of the sleeve body is sequentially connected with an explosion-proof blanket main body, a sand layer, a first oxford cloth layer and a fire-extinguishing powder layer from top to bottom; the fire extinguishing powder layer is connected with the second oxford fabric layer.

Further, the silicon rubber composite cloth layer is made of high silica fiber materials.

Furthermore, a plurality of fire extinguishing cavities are arranged inside the fire extinguishing powder layer, and fire extinguishing powder is filled in the fire extinguishing cavities.

Furthermore, a plurality of sand grain cavities are formed in the sand grain layer, and sand grains are filled in the sand grain cavities.

Furthermore, the fire extinguishing cavity and the sand grain cavity are correspondingly arranged.

Furthermore, the shape of the fire extinguishing cavity and the shape of the sand grain cavity are respectively trapezoidal, triangular, circular or square.

Furthermore, the explosion-proof blanket further comprises a binding structure used for fixing the explosion-proof blanket on the cable joint.

Furthermore, the binding structure comprises a binding belt and a magic tape, wherein one end of the binding belt is fixed on one long edge of the silicon rubber composite cloth layer 1, the hair side of the magic tape is fixed on the other end of the binding belt, and the hook side of the magic tape is fixed on the other long edge of the silicon rubber composite cloth layer.

The utility model has the beneficial effects that:

the utility model discloses an explosion-proof blanket with a cable joint, wherein a sand layer, a first oxford fabric layer, a fire extinguishing powder layer and a second oxford fabric layer are sequentially arranged below a main body of the explosion-proof blanket, the second oxford fabric layer is contacted with the cable joint when the explosion-proof blanket wraps the cable joint, when the cable joint is in a fire disaster, the second oxford fabric layer is firstly attacked by flame to generate cracks on the surface, fire extinguishing powder in the fire extinguishing powder layer can be released, so that the fire extinguishing powder falls at a fire source to extinguish the fire or the fire spread is slowed down, when the first oxford fabric layer is attacked by the flame to generate cracks on the surface, the sand in the sand layer falls at the fire source to extinguish the fire, and the effective fire extinguishing of the cable joint before the explosion is realized.

Drawings

Fig. 1 is a block diagram of a cable splice explosion proof blanket of the present invention.

Reference numbers in the figures:

1-silicon rubber composite cloth layer, 2-explosion-proof blanket main body, 3-sand layer, 4-fire-extinguishing powder layer, 5-first oxford cloth layer, 6-second oxford cloth layer, 7-binding belt, 8-rough surface and 9-hook surface.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

The present invention provides an explosion-proof blanket for a cable joint, as shown in fig. 1, the explosion-proof blanket includes: the fire-fighting blanket comprises a silicon rubber composite cloth layer 1, a first oxford cloth layer 5, a second oxford cloth layer 6, an explosion-proof blanket body 2, a sand grain layer 3 and a fire-fighting powder layer 4.

The explosion-proof blanket main body 2, the sand grain layer 3, the first oxford fabric layer 5, the fire-extinguishing powder layer 4 and the second oxford fabric layer 6 are sequentially connected from top to bottom; the second oxford fabric layer 6 is used for contacting the cable joint when the explosion-proof blanket wraps the cable joint; the silicon rubber composite cloth layer 1 is wrapped by the explosion-proof blanket main body 2, the sand grain layer 3, the first Oxford cloth layer 5 and the fire extinguishing powder layer 4 and then is connected with the edge of the second Oxford cloth layer 6.

The silicon rubber composite cloth layer 1 is made of high silica fiber materials, and has strong temperature resistance, excellent sealing performance and aging resistance and high insulating performance. The first oxford fabric layer 5 and the second oxford fabric layer 6 are made of oxford fabric and have the advantages of being light and thin in texture, soft in hand feeling, waterproof and good in ageing resistance.

When a fire disaster occurs to the cable joint, the second oxford fabric layer 6 is firstly attacked by flame to generate cracks on the surface, and the fire extinguishing powder in the fire extinguishing powder layer 4 can be released, so that the fire extinguishing powder falls on a fire source to achieve the effect of extinguishing the fire or slowing down the spread of the fire. In order to further achieve the fire extinguishing function, when the fire extinguishing powder in the fire extinguishing powder layer 4 cannot be completely extinguished, the first oxford fabric layer 5 is attacked by flame to cause cracks on the surface, and the sand grains in the sand grain layer 3 extinguish fire, so that double protection is realized.

In order to reduce the weight of the explosion-proof blanket, a plurality of fire extinguishing cavities are arranged inside the fire extinguishing powder layer 4, and fire extinguishing powder is filled in each fire extinguishing cavity. The inside sand grain chamber that is provided with of sand grain layer 3, the packing sand grain in every sand grain chamber. A plurality of sand grain chambeies set up with a plurality of extinguishing chamber is relative, make the sand grain that drops can aim at the flame more accurately.

The shape of the fire extinguishing chamber and the sand chamber may be trapezoidal, triangular, circular, square, etc., and is not particularly limited herein.

The mode of fixing the explosion-proof blanket around the cable joint is as follows: the explosion-proof blanket still includes: two binding structures; the two binding structures are respectively arranged on two opposite long edge edges of the silicon rubber composite cloth layer 1, and the two binding structures are used for tightly fixing the explosion-proof blanket outside the cable joint and completely wrapping the cable joint.

In a preferred form, the binding structure includes: a binding band 7 and a magic tape; one end of the binding belt 7 is fixed on one long edge of the silicon rubber composite cloth layer 1, the hair surface 8 of the magic tape is fixed on the other end of the binding belt 7, and the hook surface 9 of the magic tape is fixed on the other long edge of the silicon rubber composite cloth layer 1. After the binding band 7 is used for tightly winding and binding the explosion-proof blanket, the anti-explosion blanket is conveniently bonded and fixed by the magic tape.

The explosion-proof blanket is of a flexible explosion-proof blanket structure, is made of fully flexible materials, and is convenient for construction operation. The sand layer and the fire extinguishing powder layer are added in the existing explosion-proof blanket, so that the explosion-proof blanket has the fire extinguishing function. Before the cable joint explodes, the sand layer and the fire extinguishing powder layer are utilized to effectively extinguish fire, and explosion is prevented.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. A cable joint explosion-proof blanket is characterized in that: the anti-explosion blanket comprises a closed sleeve body formed by a silicon rubber composite cloth layer (1) and a second oxford cloth layer (6), wherein the inside of the sleeve body is sequentially connected with an anti-explosion blanket main body (2), a sand grain layer (3), a first oxford cloth layer (5) and a fire extinguishing powder layer (4) from top to bottom; the fire extinguishing powder layer (4) is connected with the second oxford fabric layer (6).

2. A cable splice explosion proof blanket as recited in claim 1, wherein: the silicon rubber composite cloth layer (1) is made of high silica fiber material.

3. A cable splice explosion proof blanket as recited in claim 1, wherein: a plurality of fire extinguishing cavities are arranged inside the fire extinguishing powder layer (4), and fire extinguishing powder is filled in the fire extinguishing cavities.

4. A cable splice explosion proof blanket as recited in claim 3, wherein: a plurality of sand grain cavities are arranged in the sand grain layer (3), and sand grains are filled in the sand grain cavities.

5. The cable splice explosion proof blanket of claim 4, wherein: the fire extinguishing cavity is arranged corresponding to the sand grain cavity.

6. The cable splice explosion proof blanket of claim 5, wherein: the fire extinguishing cavity and the sand grain cavity are respectively in a trapezoid shape, a triangular shape, a circular shape or a square shape.

7. A cable splice explosion proof blanket as recited in claim 6, wherein: and the binding structure is used for fixing the explosion-proof blanket on the cable joint.

8. The cable splice explosion proof blanket of claim 7, wherein: the binding structure comprises a binding belt (7) and a magic tape, wherein one end of the binding belt (7) is fixed on one long edge of the silicon rubber composite cloth layer (1), a hair side (8) of the magic tape is fixed on the other end of the binding belt (7), and a hook side (9) of the magic tape is fixed on the other long edge of the silicon rubber composite cloth layer (1).