Fireproof coating device for cable joint

Abstract

The utility model discloses a fireproof coating device for a cable joint, which relates to the technical field of cable joints and comprises an upper shell, jacks are arranged in the upper shell, a lower shell is arranged in the upper shell, fireproof cavities are arranged between the upper shell and the lower shell, and the fireproof cavities are communicated with the jacks. A plurality of discharging openings are formed in the opposite sides of the fireproof cavities, air bags are arranged on the two sides of the inner wall of each fireproof cavity, and the fireproof cavities are filled with fire extinguishing dry powder; according to the utility model, the fire extinguishing dry powder in the fireproof cavity enters the jack through the discharge port to extinguish the fire of the cable, and the air bags on the inner walls of the two sides of the fireproof cavity expand and become longer due to temperature rise, so that the fire extinguishing dry powder on the two sides of the fireproof cavity is pushed towards the middle discharge port, and more fire extinguishing dry powder falls down from the jack through the discharge port; fire spreading can be effectively prevented, fire risk is reduced, and it is ensured that the cable keeps circuit integrity in a fire.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable joint technical field, concretely is a kind of fireproof covering device for cable joint. BACKGROUND

[0002] With the rapid development of domestic economy, power industry cable is widely applied in many fields, such as high-rise building, national large-scale building, petrochemical, subway and urban power network etc., due to the restriction of cable tunnel quantity at present stage, cable intermediate joint and other running cable line installation together situation often appears, that is, the cable mixed ditch use indicated by State Grid Corporation, need to connect between cable.

[0003] But the existing design still has some shortcomings in actual use: the existing protection measure adopts simple insulating adhesive tape winding, bandaging treatment, fire may be caused in running process due to various reasons, can lead to the damage of cable line, thereby causing power interruption, easy to bring serious loss to people's life and property.

[0004] Therefore, we design a kind to be used for the fireproof covering device of cable joint to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of fireproof covering device for cable joint to solve the problems presented in the above background.

[0006] To solve the above technical problems, the utility model provides a kind to be used for the fireproof covering device of cable joint, including upper shell, the plug hole is opened in the upper shell, the two ends of the plug hole are provided with the line port, the lower shell is provided in the upper shell, the upper shell and lower shell are all opened with fireproof cavity between, the opposite side of each fireproof cavity is opened with a plurality of discharge ports, the inner wall of the fireproof cavity is provided with gasbag on both sides, the fireproof cavity is filled with fire extinguishing dry powder.

[0007] Further, the main component of fire extinguishing dry powder is ammonium dihydrogen phosphate and sodium carbonate, the material of gasbag is nylon, and sodium azide gas is contained in gasbag.

[0008] Further, the number of discharge ports is multiple, and hot melt adhesive film is arranged in the plurality of discharge ports.

[0009] Further, the bolt is screw-connected in the upper shell, one end of the bolt towards the plug hole is fixedly connected with spring, and the other end of the spring is fixedly connected with clamping plate.

[0010] Further, the end of the bolt away from the upper shell is fixedly connected with a knob, one side of the knob is fixedly connected with an L-shaped plate, a plurality of clamping grooves are arranged on the outer wall of the upper shell, and the bottom end of the L-shaped plate is inserted into the clamping grooves.

[0011] Further, the number of the bolt, the spring, the clamping plate and the knob is two, and they are symmetrically arranged on the upper and lower two side walls of the upper shell.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The dry powder for extinguishing fire arranged in the fireproof cavity can quickly extinguish the cable in the jack when the fire occurs, the air bags on the two sides of the fireproof cavity will be elongated after the temperature rises, the dry powder for extinguishing fire is pushed to the discharge port, the fire spreading can be effectively prevented, the fire danger is reduced, the cable can keep the circuit integrity in the fire, the necessary power support is provided for rescue and evacuation, the control failure and accident expansion are prevented, and the harm of the fire to the personnel is reduced.

[0014] 2. The clamping plate is arranged, the cable can be clamped after the cable is connected, the stability of the cable during work is improved, the clamping plate of the adjustable type can be suitable for different situations, the cable lines with different diameters are clamped, the L-shaped plate is clamped in the clamping groove after the cable line is clamped, the knob and the spring can be limited, and the spring loosening is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a schematic diagram of the three-dimensional structure of the utility model from outside;

[0016] Fig. 2 It is a schematic diagram of the sectional three-dimensional structure of the utility model from the front view;

[0017] Fig. 3 It is a schematic diagram of the sectional three-dimensional structure of the utility model from the top view;

[0018] Fig. 4 It is a schematic diagram of the sectional three-dimensional structure of the utility model from the side view.

[0019] In the drawing: 1, upper shell; 2, jack; 3, wiring port; 4, lower shell; 5, fireproof cavity; 6, discharge port; 7, air bag; 8, bolt; 9, spring; 10, clamping plate; 11, knob; 12, L-shaped plate; 13, clamping groove; 14, hot melt adhesive film. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made, belong to the scope of protection of the present application.

[0021] Please refer to Figs. 1-4 The utility model provides a technical scheme: a kind of fireproof covering device for cable joint, including upper shell 1, upper shell 1 is opened in and is inserted into hole 2, the both ends of inserted into hole 2 are provided with wiring port 3, upper shell 1 is provided with lower shell 4, upper shell 1 and lower shell 4 are all opened with fireproof cavity 5 between, the opposite side of each fireproof cavity 5 is opened with multiple discharge ports 6, the inner wall both sides of fireproof cavity 5 are provided with air bag 7, fireproof cavity 5 is filled with fire extinguishing dry powder.

[0022] Specific implementation, when fire due to temperature rise, air bag 7 of the inner wall of both sides of fireproof cavity 5 will expand and lengthen, the fire extinguishing dry powder of both sides of fireproof cavity 5 is pushed to the direction of middle discharge port 6, so that more fire extinguishing dry powder falls from discharge port 6 from inserted into hole 2, can effectively prevent fire spread, reduce fire risk, ensure that cable keeps circuit integrity in fire.

[0023] Please refer to Figs. 1-4 It is shown that the main component of fire extinguishing dry powder is ammonium dihydrogen phosphate and sodium carbonate, the material of air bag 7 is nylon, air bag 7 contains sodium azide gas.

[0024] Specific implementation, ammonium dihydrogen phosphate will decompose when heated, this process will absorb a large amount of heat, thereby reducing the temperature around combustible, sodium carbonate will also decompose under high temperature, absorbs heat, reduces the temperature around combustible, the air bag 7 of nylon has high strength, wear resistance, impact resistance and other characteristics, sodium azide in air bag 7, when heated, rapidly generates a large amount of nitrogen gas and other gases, so that air bag 7 expands rapidly.

[0025] Please refer to Figs. 1-4 The number of discharge port 6 is multiple, and hot melt adhesive film 14 is arranged in the multiple discharge ports 6.

[0026] Specific implementation, after cable line is on fire, hot melt adhesive film 14 in discharge port 6 will melt under heat, then fire extinguishing dry powder in fireproof cavity 5 will fall into cable line in inserted into hole 2 from multiple discharge ports 6 to extinguish fire.

[0027] Please refer to Figs. 1-4 Screw bolt 8 is threadedly connected in upper shell 1, one end of screw bolt 8 towards inserted into hole 2 is fixedly connected with spring 9, the other end of spring 9 is fixedly connected with clamping plate 10.

[0028] In implementation, the two knobs 11 drive the bolts 8 to move inward, the two clamping plates 10 also move inward until clamping the cable, at this time the springs 9 are compressed to generate elastic force to make the clamping of the clamping plates 10 more stable, so that the cable is clamped to improve the stability of the cable during work.

[0029] Referring to Figs. 1-4 , the end of the bolt 8 away from the upper shell 1 is fixedly connected with the knob 11, one side of the knob 11 is fixedly connected with the L-shaped plate 12, the outer wall of the upper shell 1 is provided with a plurality of clamping grooves 13, the bottom end of the L-shaped plate 12 is inserted into the clamping groove 13, the number of the bolt 8, the spring 9, the clamping plate 10 and the knob 11 is two, and symmetrically arranged on the upper and lower two side walls of the upper shell 1.

[0030] In implementation, the L-shaped plate 12 on the two knobs 11 is inserted into the clamping groove 13 on the upper shell 1, which can limit the knob 11 and the spring 9 to prevent the spring 9 from loosening.

[0031] Working principle: when the cable line runs and a fire occurs, the temperature in the jack 2 rises, then the hot melt adhesive film 14 in the discharge port 6 will melt, then the fire extinguishing dry powder in the fireproof cavity 5 will enter the jack 2 through the discharge port 6 to extinguish the fire of the cable line, and due to the temperature rise, the air bags 7 on the two side walls of the fireproof cavity 5 will expand and become longer, pushing the fire extinguishing dry powder on both sides of the fireproof cavity 5 to the middle discharge port 6, so that more fire extinguishing dry powder falls from the discharge port 6 from the jack 2, which can effectively prevent the spread of fire, reduce the risk of fire, and ensure the integrity of the circuit of the cable in the fire; in addition, in use, two cable lines are respectively connected from the terminal ports 3 at both ends of the jack 2, when the cable lines reach the middle position of the jack 2, the two knobs 11 drive the bolts 8 to move inward, the two clamping plates 10 also move inward until clamping the cable, at this time the springs 9 are compressed to generate elastic force to make the clamping of the clamping plates 10 more stable, so that the cable is clamped to improve the stability of the cable during work, then the L-shaped plate 12 on the knob 11 is inserted into the clamping groove 13 on the upper shell 1, which can limit the knob 11 and the spring 9 to prevent the spring 9 from loosening.

Claims

1. A fire barrier covering device for cable splices comprising an upper housing (1), characterized in that, The upper shell (1) is provided with a jack (2), the two ends of the jack (2) are provided with a wiring port (3), the upper shell (1) is provided with a lower shell (4), the upper shell (1) and the lower shell (4) are provided with a fireproof cavity (5), the opposite side of each fireproof cavity (5) is provided with a plurality of discharge ports (6), the inner wall of the fireproof cavity (5) is provided with an air bag (7), the fireproof cavity (5) is filled with fire extinguishing dry powder.

2. A fire barrier cover for a cable splice as defined in Claim 1, wherein: The main components of the fire extinguishing dry powder are ammonium dihydrogen phosphate and sodium carbonate, the material of the air bag (7) is nylon, and the air bag (7) contains sodium azide gas.

3. A fire barrier cover for a cable splice as defined in Claim 2, wherein: The number of the discharge port (6) is four, and the inner wall of the four discharge ports (6) is connected with a hot melt adhesive film (14).

4. A fire barrier cover for a cable splice according to claim 3, wherein: The upper shell (1) is provided with a bolt (8), one end of the bolt (8) is fixedly connected with a spring (9), and the other end of the spring (9) is fixedly connected with a clamping plate (10).

5. A fire barrier cover for a cable splice according to claim 4, wherein: The end of the bolt (8) away from the upper shell (1) is fixedly connected with a knob (11), one side of the knob (11) is fixedly connected with an L-shaped plate (12), the outer wall of the upper shell (1) is provided with a plurality of clamping grooves (13), and the bottom end of the L-shaped plate (12) is inserted into the clamping groove (13).

6. A fire barrier cover for a cable splice according to claim 5, wherein: The number of the bolt (8), the spring (9), the clamping plate (10) and the knob (11) is two, and they are symmetrically arranged on the upper and lower two side walls of the upper shell (1).

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