Flame extinguishing sheath for cable joint

Abstract

The utility model discloses a flame-extinguishing sheath for a cable joint, which is applied to the field of flame-extinguishing sheaths and comprises a sheath, and the inner wall of the sheath is fixedly connected with a flame-extinguishing layer. A plurality of partition plates are arranged at the top of the protective sleeve, connecting blocks are arranged on the two sides of each partition plate, sliding blocks are fixedly connected to the bottoms of the connecting blocks, locking bolts in threaded connection with the sliding blocks are in threaded connection with the interiors of the connecting blocks, and two sliding grooves are formed in the top of the protective sleeve; according to the utility model, the sheath with the flame extinguishing layer is used to cover the cable joint, and the flame extinguishing microcapsules in the flame extinguishing layer can be actively released to extinguish fire when poor contact or short circuit fire occurs. The plurality of cable joints are separated from the sheath through the plurality of partition plates, so that mutual interference of different cable joints is effectively prevented; meanwhile, the distance between the partition plates is adjustable, and the number of the partition plates can be increased or decreased according to needs; the device is suitable for different numbers of cable joints.

Description

Technical Field

[0001] The utility model relates to the field of flame extinguishing sheaths, in particular to a flame extinguishing sheath for cable joints. Background Art

[0002] Existing energy cabinets such as cable cabinets, high-voltage cabinets, and power distribution cabinets with cable joints do not have any protective structure at the joint after the cable is fixedly connected to the joint inside the cabinet. The positions of the cable and the joint inside the cabinet are the places where poor contact and short-circuit fires are most likely to occur. When a short circuit occurs and catches fire at the position of the cable and the joint inside the cabinet, and the fire breaks out at the position of the cable and the joint inside the cabinet without the knowledge of the personnel, it is very easy for the scale of the flame to expand, causing a large-scale fire, thus causing losses to personnel and the economy. For this reason, we propose a flame extinguishing sheath for cable joints. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a flame extinguishing sheath for cable joints, and its advantage is that it can extinguish the flame at the position of the cable and the joint inside the cabinet.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions: a flame extinguishing sheath for cable joints, including a sheath, wherein a flame extinguishing layer is fixedly connected to the inner wall of the sheath; a plurality of partition plates are arranged at the top of the sheath, connection blocks are arranged on both sides of the partition plates, sliders are fixedly connected to the bottoms of the connection blocks, connecting rods are slidably connected to the interiors of the connection blocks, fixing plates are fixedly connected to the bottom ends of the connecting rods, a plurality of teeth are fixedly connected to the bottoms of the fixing plates, springs are sleeved on the surfaces of the connecting rods, the top ends of the springs are fixedly connected to pulling balls through spring fixing pieces, the bottom ends of the springs are fixedly connected to the connection blocks through spring fixing pieces, two chutes are opened at the top of the sheath, and a toothed plate fixedly connected to the sheath is arranged inside the chutes.

[0005] By adopting the above technical solutions, the flame extinguishing layer can extinguish the flame when the fire occurs; by arranging a plurality of partition plates, the distance between the multiple partition plates can be adjusted arbitrarily, and two partition plates can form a partition space to separate the continuous cables and the cabinet joints; by arranging the fixing plate, teeth, toothed plate, connecting rod, spring, slider and chute, the position of the partition plate can be locked.

[0006] The utility model is further arranged as follows: the bottom of the connection block is in contact with the top of the sheath, and the side of the connection block close to the partition plate is fixedly connected to the partition plate.

[0007] By adopting the above technical solutions, through the arrangement of the connection block, the balance of the partition plate during movement is increased by the contact between the connection block and the sheath.

[0008] The present utility model is further configured such that: the inside of the sliding groove is slidably connected to the surface of the slider, and the bottom of the partition plate is in contact with the flame extinguishing layer.

[0009] With the above technical solution, the sliding of the sliding groove and the slider and the contact between the partition plate and the flame extinguishing layer are both for linearly guiding the moving direction of the partition plate.

[0010] The present utility model is further configured such that: an inspection opening is provided between the two partition plates.

[0011] With the above technical solution, the inspection opening is mainly for facilitating the quick inspection of the cable and the joint, without the need to remove the sheath, and at the same time facilitating the inspection of the state of the flame extinguishing layer;

[0012] When the flame extinguishing sheath is installed, the sheath is at the top, several partition plates are vertically downward, and the joint position of the cable and the cabinet is at the center of the bottom of the sheath. The space between the two partition plates is unobstructed, and the inspection opening between the two partition plates facilitates personnel operation.

[0013] The present utility model is further configured such that: the inside of the flame extinguishing layer has several flame extinguishing microcapsules and the flame extinguishing microcapsules contain perfluoromethyl hexanone fire extinguishing agent.

[0014] With the above technical solution, when the perfluoromethyl hexanone fire extinguishing agent contacts the flame, it can quickly evaporate and absorb a large amount of heat, changing from a liquid state to a gaseous state. The heat absorbed during this process causes the temperature around the fire source to decrease; and the vaporized covering area can isolate oxygen, reducing the content of the combustion-supporting agent below the combustion level, thereby achieving fire extinguishing.

[0015] The present utility model is further configured such that: both sides of the sheath are fixedly connected with adhesive layers.

[0016] With the above technical solution, through the setting of the adhesive layers, it is convenient for the sheath to be adhesively fixed to the cabinet body through the adhesive layers on both sides.

[0017] In summary, the present utility model has the following beneficial effects:

[0018] The present utility model uses a sheath with a flame extinguishing layer to cover the cable joint. When there is poor contact or short circuit and fire occurs, it can actively release the flame extinguishing microcapsules in the flame extinguishing layer to extinguish the fire. The multiple cable joints are separated by multiple partition plates, effectively preventing the mutual interference of different cable joints; at the same time, the distance between the partition plates is adjustable, and the number of partition plates can be increased or decreased according to needs; it is applicable to the use of different numbers of cable joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional view of the structure of the present utility model;

[0020] Figure 2is the present utility model Figure 1 The enlarged view of the structure at position A in the present utility model;

[0021] Figure 3 is the partial side sectional view of the sheath of the present utility model.

[0022] Reference numerals: 1. Sheath; 2. Flame extinguishing layer; 3. Partition plate; 4. Connecting block; 5. Slide block; 6. Connecting rod; 7. Chute; 8. Fixed plate; 9. Teeth; 10. Toothed plate; 11. Spring; 12. Adhesive layer. Detailed implementation manners

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1:

[0025] Refer to Figure 1 , Figure 2 and Figure 3 , a flame extinguishing sheath for a cable joint, comprising a sheath 1, the inner wall of the sheath 1 is fixedly connected with a flame extinguishing layer 2; several partition plates 3 are arranged on the top of the sheath 1, connecting blocks 4 are arranged on both sides of the partition plate 3, the bottom of the connecting block 4 is fixedly connected with a slide block 5, the inside of the connecting block 4 is slidably connected with a connecting rod 6, the bottom end of the connecting rod 6 is fixedly connected with a fixed plate 8, the bottom of the fixed plate 8 is fixedly connected with several teeth 9, the surface of the connecting rod 6 is sleeved with a spring 11, the top end of the spring 11 is fixedly connected with a pulling ball through a spring fixing member, the bottom end of the spring 11 is fixedly connected with the connecting block 4 through a spring fixing member, two chutes 7 are opened on the top of the sheath 1, and a toothed plate 10 fixedly connected with the sheath 1 is arranged inside the chute 7; by using the sheath with a flame extinguishing layer to cover the cable joint, when poor contact or short circuit occurs and catches fire, the flame extinguishing microcapsules in the flame extinguishing layer can be actively released for fire extinguishing. The multiple cable joints are separated by multiple partition plates, effectively preventing the mutual interference of different cable joints; at the same time, the distance between the partition plates and between the partition plates is adjustable, and the number of partition plates can be increased or decreased according to needs; it is applicable to the use of different numbers of cable joints.

[0026] Further, the bottom of the connecting block 4 is in contact with the top of the sheath 1, and the side of the connecting block 4 close to the partition plate 3 is fixedly connected with the partition plate 3. Through the setting of the connecting block 4, the contact mode between the connecting block 4 and the sheath 1 is used to increase the balance of the partition plate 3 during movement.

[0027] Further, the inside of the chute 7 is slidably connected with the surface of the slide block 5, and the bottom of the partition plate 3 is in contact with the flame extinguishing layer 2. The sliding of the chute 7 and the slide block 5 and the contact between the partition plate 3 and the flame extinguishing layer 2 are both for linearly guiding the moving direction of the partition plate 3.

[0028] Further, there is an inspection opening between the two partition plates 3. The inspection opening is mainly for facilitating the quick inspection of cables and joints without removing the sheath, and at the same time, it is convenient to check the status of the flame extinguishing layer. When installing the flame extinguishing sheath, the sheath 1 is at the top, several partition plates 3 are perpendicular downward, and the joint position of the cable and the cabinet is at the center of the bottom of the sheath 1. The space between the two partition plates 3 is unobstructed, and the inspection opening between the two partition plates 3 facilitates personnel operation.

[0029] Further, there are several flame extinguishing microcapsules inside the flame extinguishing layer 2, and perfluoroketone fire extinguishing agent is inside the flame extinguishing microcapsules. When the perfluoroketone fire extinguishing agent contacts the flame, it can quickly evaporate and absorb a large amount of heat, changing from a liquid state to a gaseous state. The heat absorbed during this process causes the temperature around the fire source to decrease. The vaporized covering area can isolate oxygen and reduce the content of the combustion-supporting agent to below the combustion level, thus achieving fire extinguishing.

[0030] Further, adhesive layers 12 are fixedly connected to both sides of the sheath 1. Through the arrangement of the adhesive layers 12, it is convenient for the sheath to be adhesively fixed to the cabinet through the adhesive layers 12 on both sides.

[0031] Brief description of the usage process: The sheath can be fixedly installed at the cable joint position inside cabinets such as cable cabinets, high-voltage cabinets, and distribution cabinets; the sheath 1 needs to be at the top, and the arc surface of the sheath 1 should face upward.

[0032] The number of partition plates 3 can be increased or decreased according to needs.

[0033] The distance between the two partition plates 3 is adjusted by the slider 5 inside the chute 7;

[0034] By pulling the pull ball to drive the spring 11 to extend and the connecting rod 6 to move outward, the connecting rod 6 will drive the fixed plate 8 and the teeth 9 at the bottom of the fixed plate 8 to separate from the toothed plate 10. At this time, there is no contact between the fixed plate 8 and the teeth 9, and the slider 5 can slide back and forth inside the chute 7 and on the top of the toothed plate 10;

[0035] When the pull ball is not under force, because the spring will generate a restoring elastic force after extension, when the pull ball is not under force, the spring 11 resets to drive the pull ball to reset, and the pull ball drives the fixed plate 8 and the teeth 9 to reset. The reset of the teeth 9 will engage with the toothed plate 10, and at this time, the slider 5 will not be able to move. By restricting the slider 5, the connecting block 4 is limited and fixed.

[0036] After the sheath 1 and the cabinet are fixedly installed, the cable joint of the cabinet will be at the center of the bottom of the flame extinguishing layer 2. At this time, through the distance between the two partition plates 3, personnel can dock the cable and the cable joint of the cabinet;

[0037] When the cable joint catches fire due to poor contact or short circuit, the flame temperature will melt the flame extinguishing layer 2 immediately. After the flame extinguishing layer 2 melts, the flame extinguishing microcapsules inside it will be released. After the flame extinguishing microcapsules are released, they will be melted by the temperature, and the perfluoromethylcyclohexanone fire extinguishing agent inside will be released. At high temperatures, perfluoromethylcyclohexanone will decompose to produce free radicals. These free radicals will react with the free radicals in the flame to form gaseous oxygen required for isolating the flame combustion, thereby inhibiting the combustion chain reaction and extinguishing the flame. Thus, the flame can be contained when it occurs, and the situation of the expanding combustion range of the flame will not occur, ensuring the safety of personnel and property.

[0038] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions according to needs, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A flame extinguishing sheath for a cable joint, comprising a sheath (1), characterized in that: The inner wall of the jacket (1) is fixedly connected to a flame extinguishing layer (2); a plurality of partition plates (3) are provided on the top of the jacket (1); connecting blocks (4) are provided on both sides of the partition plates (3); a slider (5) is fixedly connected to the bottom of the connecting block (4); a connecting rod (6) is slidably connected inside the connecting block (4); a fixing plate (8) is fixedly connected to the bottom of the fixing plate (8); a plurality of teeth (9) are fixedly connected to the bottom of the fixing plate (8); a spring (11) is sleeved on the surface of the connecting rod (6); a pull ball is fixedly connected to the top of the spring (11) via a spring fixing piece; the bottom end of the spring (11) is fixedly connected to the connecting block (4) via a spring fixing piece; two slide grooves (7) are opened on the top of the jacket (1); a tooth plate (10) fixedly connected to the jacket (1) is provided inside the slide groove (7).

2. A flame extinguishing sheath for cable joint according to claim 1, characterized in that: The bottom of the connection block (4) contacts the top of the sheath (1), and the side of the connection block (4) close to the partition plate (3) is fixedly connected to the partition plate (3).

3. A flame extinguishing sheath for cable joint according to claim 1, characterized in that: The interior of the slide groove (7) and the surface of the slide block (5) are slidably connected, and the bottom of the partition plate (3) is in contact with the flame extinguishing layer (2).

4. A flame extinguishing sheath for cable joint according to claim 1, characterized in that: An inspection opening is provided between the two partition plates (3).

5. A flame extinguishing sheath for cable joint according to claim 1, characterized in that: The flame extinguishing layer (2) has a plurality of flame extinguishing microcapsules inside, and the flame extinguishing microcapsules contain perfluorohexanone fire extinguishing agent.

6. A flame extinguishing sheath for cable joint according to claim 1, characterized in that: Adhesive layers (12) are fixedly connected to both sides of the sheath (1).

Images