CN212366798U

CN212366798U - Connecting device of fireproof and explosion-proof blanket for cable intermediate joint

Info

Publication number: CN212366798U
Application number: CN202022936382.2U
Authority: CN
Inventors: 金哲明
Original assignee: Sichuan Disiyuan Technology Co ltd
Current assignee: Sichuan Disiyuan Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-01-15
Anticipated expiration: 2030-12-10

Abstract

The utility model relates to the technical field of cable laying, specifically disclose a connecting device of a fireproof and explosion-proof blanket for cable intermediate head, a plurality of positioning balls are evenly arranged on one side of the fireproof and explosion-proof blanket, a bar-shaped positioning block is arranged on one side of each positioning ball, a fixture block is arranged on the other side of each positioning ball, and the distance between the two ends of each fixture block and the corresponding positioning block is gradually reduced; the side of the fireproof and explosion-proof blanket opposite to the positioning balls is provided with clamping rings which correspond to the positioning balls one to one, and the clamping blocks are clamped into the clamping rings to realize the enclosure of the fireproof and explosion-proof blanket; the minimum distance between the positioning block and the clamping block is 1-5 mm larger than the thickness of the fireproof and explosion-proof blanket. The connecting device is simple in structure, reasonable in design, simple and convenient in connecting operation and strong in connecting stability.

Description

Connecting device of fireproof and explosion-proof blanket for cable intermediate joint

Technical Field

The utility model relates to a cable laying technical field, concretely relates to cable intermediate head is with connecting device of fire and explosion protection blanket.

Background

With the development of urban economy, high-voltage cable lines of 110KV and above laid in tunnels are continuously increased, in order to save channel resources, the cable laying application conditions of small-diameter tunnels, calandrias and cable wells are very common, and the cable route construction is often carried out under the condition that running cable lines are arranged in the small-diameter tunnels or in the calandrias. Meanwhile, according to the requirements of the operation regulations of company cable lines, the cable lines need to be regularly inspected. However, due to space limitation, the common explosion-proof shells of most manufacturers cannot be installed at present. The cable tunnel is sealed in environment, personnel get in and out of a manhole-well distance field, and when a cable connector and the like in the tunnel break down suddenly to cause explosion or fire smoke, on one hand, other nearby equipment can be damaged greatly, and on the other hand, personal safety of operating personnel can be threatened. Therefore, it is necessary to research the fire-proof and explosion-proof joint device for the cable infrastructure, operation and maintenance operation in the small-diameter tunnel and the calandria joint well.

Application number is 201820534327.0, the name is that flexible fire prevention explosion-proof blanket of high tension cable joint parcel formula discloses an explosion-proof blanket structure, and this structure fire prevention explosion-proof blanket comprises three-layer flexible material, and the hasp formula burr area is made up to the outside, and the both ends at oxford cloth are made up respectively to the matte and the thorn face in hasp formula burr area. The fireproof and explosion-proof blanket with the structure has good fireproof and explosion-proof performance, but the connecting device is only bonded by the burr belt, so that the problem of infirm bonding exists, for example, when an operator works, the cable can vibrate and is easy to break; the bonding performance of the burr belt structure is greatly reduced after repeated bonding and tearing off, and the burr belt structure is more unstable; the adhesive property can be greatly reduced after meeting water, etc. Therefore, a fire and explosion protection blanket connecting device for a cable intermediate joint with better connecting performance is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem, a connecting device of fire and explosion protection blanket for cable intermediate head is provided, this connecting device simple structure, reasonable in design, connect easy operation convenience and connection stability strong.

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

a connecting device of a fireproof and explosion-proof blanket for a cable intermediate joint is characterized in that a plurality of positioning balls are uniformly arranged on one side edge of the fireproof and explosion-proof blanket, a strip-shaped positioning block is arranged on one side of each positioning ball, a clamping block is arranged on the other side of each positioning ball, and the distance between the two ends of each clamping block and the corresponding positioning block is gradually reduced; one side of the fireproof and explosion-proof blanket opposite to the positioning balls is provided with clamping rings in one-to-one correspondence with the positioning balls, and the clamping blocks are clamped into the clamping rings to realize the enclosure of the fireproof and explosion-proof blanket.

As a preferred scheme, the minimum distance between the positioning block and the clamping block is 1-5 mm larger than the thickness of the fireproof and explosion-proof blanket.

As a preferable scheme, the fixture block is cylindrical, and the positioning block is rectangular.

Preferably, the length of the fixture block is more than 2 times of the inner diameter of the clamp ring.

As a preferred scheme, the width of the positioning block is 2-3 times of the diameter of the fixture block.

As a preferred scheme, the clamping ring is arranged on the outer side of the fireproof and explosion-proof blanket and is 5-50 cm away from the edge of the fireproof and explosion-proof blanket.

As a preferred scheme, the clamping ring is embedded on the outer side of the fireproof and explosion-proof blanket and is 5-50 cm away from the edge of the fireproof and explosion-proof blanket.

As a preferred scheme, the fireproof and explosion-proof blanket comprises an inner layer, a middle layer and an outer layer which are sequentially bonded, wherein the inner layer is a Kevlar aramid fiber silk layer, the middle layer is a winding aramid fiber silk cloth layer, the outer layer is an Oxford cloth layer, and the clamping ring is embedded on the Oxford cloth layer and is 5-50 cm away from the edge of the fireproof and explosion-proof blanket.

As a preferred scheme, an unbonded area is arranged between the oxford fabric layer and the winding type aramid fiber fabric layer, the unbonded area is concentric with the clamping ring, and the maximum diameter of the unbonded area is 2 times of the diameter of the clamping ring.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses simple structure, reasonable in design only includes locating piece, fixture block and snap ring structure, is ripe technology in its preparation, makes portably, low cost. And, the utility model discloses change the burr area and connect to the joint, through going into the fixture block card in the snap ring, realize the fire prevention and explosion protection blanket to the parcel of cable, the structure of this kind of joint, easy operation is convenient, it is more important, it is difficult for droing, no matter be used repeatedly or be stained with the state of water, all very stable, when the cable vibrates even, because including the cable is wrapped up by the fire prevention and explosion protection blanket, the different a plurality of in fire prevention position, like this, even cable junction is the big footpath that diminishes or cable even connection box, all applicable, application scope is wider, the practicality is stronger.

Drawings

FIG. 1 is a schematic view of a cable intermediate joint connection;

FIG. 2 is a schematic view of the fire and explosion protection blanket fixed at the junction of the cable intermediate joint by the device of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A;

FIG. 4 is a schematic view of the present invention installed on a fireproof and explosion-proof blanket;

FIG. 5 is a schematic view of the structure of the positioning ball/positioning block/clamping block of the present invention;

fig. 6 is a usage state diagram of the present invention.

Wherein, the names corresponding to the reference numbers are:

1-positioning ball, 2-positioning block, 3-clamping block and 4-clamping ring.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

The embodiment provides a connecting device of fire and explosion protection blanket for cable intermediate head, wherein, what the fire and explosion protection blanket body selected is inside, in, the outer three layer construction that bonds in proper order, and the inlayer is kevlar aramid fiber silk layer, and the middle level is winding formula aramid fiber silk cloth layer, and the skin is the oxford cloth layer. Of course, other explosion-proof blankets with a multi-layer structure can be selected, and the outermost layer is preferably an oxford fabric layer and is not easy to tear.

Referring to fig. 1 to 6, the connection device of the present embodiment has the following structure in the fire-proof and explosion-proof blanket: a plurality of positioning balls 1 are uniformly arranged on one side edge of the fireproof and explosion-proof blanket, a strip-shaped positioning block 2 is arranged on one side of each positioning ball, a clamping block 3 is arranged on the other side of each positioning ball, and the distance between the two ends of each clamping block and the corresponding positioning block is gradually reduced. One side opposite to the positioning ball on the fireproof and explosion-proof blanket is provided with a clamping ring 4 which is in one-to-one correspondence with the positioning ball, and the clamping block 3 is clamped into the clamping ring to realize the enclosure of the fireproof and explosion-proof blanket. During the installation, only need earlier the fixture block 3 be close to the preferential snap ring 4 that passes of one end of locating piece 2, then the pulling fixture block makes locating ball 1 block the edge of snap ring 4, then with the fixture block 3 other end press the snap ring can, the installation is very simple and convenient, because the cable is the cylinder size, leads to fire prevention and explosion protection blanket to be the state that slightly collapses outward, so impel this device straining promptly. In the structure, the positioning ball, the positioning block and the clamping block are of an integral structure, and the relative positions cannot be changed, so that the stability can be kept during and after installation. The setting of locating ball is in order to prevent that it from passing the snap ring, and the setting of locating piece makes things convenient for the handheld installation of staff on the one hand, and on the other hand then is the cooperation fixture block, because the interval of fixture block and locating piece one end reduces gradually, can play certain clamping action to the fire prevention and explosion protection blanket, prevents that the device after the installation from sliding at will under the cable vibration state, plays supplementary anti-drop's effect.

Wherein, the minimum interval between locating piece 2 and the fixture block 3 is 1~5mm than the thickness of fire prevention explosion-proof blanket 1~5mm greatly, can just be the best through the state of snap ring 4 to, for more easy to assemble, the snap ring can be ellipse circular form, circular form etc. if for ellipse circular, then be that the major diameter direction should be perpendicular with nearest fire prevention explosion-proof blanket edge line, so that fixture block 3 can be blocked steadily and be difficult for droing when guaranteeing the atress. The fixture block 3 is preferably cylindrical, the positioning block 2 is preferably rectangular, and the width of the positioning block 2 is 2 to 3 times the diameter of the fixture block 3. Therefore, the installation is convenient, and the installed positioning block is exposed outside and can be seen, but does not protrude to prick hands.

In order to facilitate the installation of the clamping block and ensure that the clamping block is not easy to fall off from the clamping ring after being installed, the clamping block is in an obtuse-angle V shape, and weak elastic force exists at two ends of the clamping block, so that the clamping block can be clamped into the clamping ring after being extruded forcibly, the length of the clamping block 3 is set to be more than 2 times of that of the clamping ring 4, and the clamping block can be prevented from being separated from the clamping ring naturally. In order to adapt to cables with more cable diameters, each cable can be completely enclosed, the clamping ring 4 is directly sewn on the outer side of the fireproof and explosion-proof blanket or is directly embedded on the outer side of the fireproof and explosion-proof blanket, the distance between the clamping ring 4 and the edge of the fireproof and explosion-proof blanket is 5-50 cm, and the clamping ring 4 can be arranged in multiple rows. Certainly, snap ring 4 also can directly inlay on the oxford cloth layer, and this moment, be equipped with between oxford cloth layer and the winding type aramid fiber silk cloth layer and not bond the region, it is concentric with snap ring 4 not to bond the region, and the maximum diameter is 2 times of snap ring diameter to the installation.

This embodiment simple structure, the design is very ingenious, and it changes the burr area and connects for the joint, through going into the fixture block card intra-annular, realizes the fire and explosion protection blanket to the parcel of cable, the structure of this kind of joint, easy operation is convenient, and is difficult for droing, applicable in multiple operating mode, the practicality is strong.

Claims

1. The connecting device of the fireproof and explosion-proof blanket for the cable intermediate joint is characterized in that a plurality of positioning balls (1) are uniformly arranged on one side edge of the fireproof and explosion-proof blanket, a strip-shaped positioning block (2) is arranged on one side of each positioning ball, a clamping block (3) is arranged on the other side of each positioning ball, and the distance between the two ends of each clamping block and the positioning block is gradually reduced; one side opposite to the positioning ball on the fireproof and explosion-proof blanket is provided with a clamping ring (4) corresponding to the positioning ball, and the clamping block (3) is clamped into the clamping ring to realize the enclosure of the fireproof and explosion-proof blanket.

2. The connecting device of the fire-proof and explosion-proof blanket for the cable intermediate joint as claimed in claim 1, wherein the minimum distance between the positioning block (2) and the clamping block (3) is 1-5 mm larger than the thickness of the fire-proof and explosion-proof blanket.

3. The connecting device of the fire-proof and explosion-proof blanket for the middle joint of the cable according to claim 1, wherein the fixture block (3) is cylindrical and the positioning block (2) is rectangular.

4. The connecting device of the fire-proof and explosion-proof blanket for the intermediate joint of the cable as claimed in claim 3, wherein the length of the fixture block (3) is more than 2 times of the inner diameter of the snap ring (4).

5. The connecting device of the fire-proof and explosion-proof blanket for the cable intermediate joint as claimed in claim 3, wherein the width of the positioning block (2) is 2-3 times of the diameter of the clamping block (3).

6. The connecting device of the fire-proof and explosion-proof blanket for the middle joint of the cable according to any one of claims 1 to 5, wherein the snap ring (4) is arranged outside the fire-proof and explosion-proof blanket and is 5 to 50cm away from the edge of the fire-proof and explosion-proof blanket.

7. The connecting device of the fire-proof and explosion-proof blanket for the middle joint of the cable as claimed in any one of claims 1 to 5, wherein the snap ring (4) is embedded outside the fire-proof and explosion-proof blanket and is 5 to 50cm away from the edge of the fire-proof and explosion-proof blanket.

8. The connecting device of the fire-proof and explosion-proof blanket for the middle joint of the cable as claimed in any one of claims 1 to 5, wherein the fire-proof and explosion-proof blanket comprises an inner layer, a middle layer and an outer layer which are bonded in sequence, the inner layer is a Kevlar aramid fiber layer, the middle layer is a wound aramid fiber fabric layer, the outer layer is an Oxford fabric layer, and the snap ring (4) is embedded on the Oxford fabric layer and is 5 to 50cm away from the edge of the fire-proof and explosion-proof blanket.

9. The connecting device of the fire-proof and explosion-proof blanket for the intermediate joint of the cable as claimed in claim 8, wherein an unbonded area is arranged between the oxford fabric layer and the wound aramid fiber fabric layer, the unbonded area is concentric with the snap ring (4), and the maximum diameter of the unbonded area is 2 times of the diameter of the snap ring.