阅读说明：本技术 一种配电箱自动灭火装置 (Automatic fire extinguishing device for distribution box ) 是由 赵月红 于 2021-07-28 设计创作，主要内容包括：本发明公开了一种配电箱自动灭火装置,包括箱体,所述箱体侧壁贯穿设有通风口,所述通风口内壁固定连接有防尘网,所述箱体内设有灭火机构,所述灭火机构包括固定连接在箱体内顶部的双金属片,所述箱体内顶部固定连接有固定板与固定盒,所述固定板侧壁贯穿设有连接杆,所述连接杆远离固定盒的一端固定连接有移动板,所述固定盒内固定连接有挡板,所述挡板上壁设有斜面。本发明能够提高该装置的灭火效率,且避免了因人工反应时间较长而引发的安全事故,还能够挡住防尘网,将箱体内部空间与外界隔绝,防止火势蔓延,且通过二氧化碳气体能够大大降低箱体内部的氧气浓度,产生窒息作用而灭火,具有辅助灭火的效果。(The invention discloses an automatic fire extinguishing device for a distribution box, which comprises a box body, wherein a vent hole penetrates through the side wall of the box body, a dust screen is fixedly connected to the inner wall of the vent hole, a fire extinguishing mechanism is arranged in the box body and comprises a bimetallic strip fixedly connected to the inner top of the box body, a fixed plate and a fixed box are fixedly connected to the inner top of the box body, a connecting rod penetrates through the side wall of the fixed plate, a movable plate is fixedly connected to one end, away from the fixed box, of the connecting rod, a baffle plate is fixedly connected in the fixed box, and an inclined plane is arranged on the upper wall of the baffle plate. The invention can improve the fire extinguishing efficiency of the device, avoid safety accidents caused by long artificial reaction time, block the dustproof net, isolate the internal space of the box body from the outside, prevent fire spreading, greatly reduce the oxygen concentration in the box body through carbon dioxide gas, generate a suffocation effect to extinguish fire, and have the effect of assisting fire extinguishing.)

1. An automatic fire extinguishing device for a distribution box comprises a box body (1), and is characterized in that a ventilation opening (17) penetrates through the side wall of the box body (1), and a dust screen (16) is fixedly connected to the inner wall of the ventilation opening (17);

the fire extinguishing device is characterized in that a fire extinguishing mechanism is arranged in the box body (1), the fire extinguishing mechanism comprises a bimetallic strip (4) fixedly connected to the inner top of the box body (1), a fixed plate (2) and a fixed box (5) are fixedly connected to the inner top of the box body (1), a connecting rod (9) penetrates through the side wall of the fixed plate (2), a movable plate (3) is fixedly connected to one end, away from the fixed box (5), of the connecting rod (9), a baffle (7) is fixedly connected to the inner side of the fixed box (5), an inclined plane is arranged on the upper wall of the baffle (7), a space, above the baffle (7), in the fixed box (5) is filled with a dilute hydrochloric acid solution, limestone particles are filled in a space, below the baffle (7), a liquid outlet (10) is arranged through the side wall of the baffle (7), a cavity (6) is arranged in the baffle (7), and the cavity (6) is communicated with the baffle (10), one end of the connecting rod (9) far away from the moving plate (3) is fixedly connected with a moving block (8);

the side wall of the fixing box (5) is fixedly connected with a fixing cylinder (11), the fixing cylinder (11) is communicated with a space, below the baffle plate (7), of the fixing box (5) through an air duct, the lower end of the fixing box (5) is fixedly connected with a steel needle (14), the steel needle (14) is obliquely arranged towards the balloon (23), a piston (12) is connected in the fixing cylinder (11) in a sealing and sliding mode, one end of the piston (12) is fixedly connected with a moving rod (13), the lower end of the fixing plate (2) is fixedly connected with the balloon (23), the air inlet end of the balloon (23) is communicated with the fixing cylinder (11) through an air outlet pipe (15), and the balloon (23) is filled with a dry powder extinguishing agent;

the box body (1) is provided with a driving mechanism for isolating air;

and the box body (1) is provided with an air pumping mechanism for improving the sealing property.

2. The automatic fire extinguishing device for the distribution box according to claim 1, wherein the driving mechanism comprises a fixing strip (20) fixedly connected to the inner wall of the box body (1), the side wall of the fixing strip (20) is rotatably connected with a rotating rod (19) through a rotating shaft, the side wall of the rotating rod (19) is provided with two openings (21) in a penetrating manner, the side wall of the moving rod (13) is fixedly connected with a moving column (22), the inner wall of the ventilation opening (17) is provided with a groove (28), the top of the groove (28) is provided with a sliding groove (24), a fire baffle (25) capable of moving up and down is arranged in the sliding groove (24), the side wall of the fire baffle (25) is provided with a limiting groove (26), and the sliding groove (24) is internally provided with a limiting rod (27).

3. The automatic fire extinguishing device for the distribution box is characterized in that the air pumping mechanism comprises a fixing groove (29) formed in the inner wall of the box body (1), a moving strip (30) is connected to the inner wall of the fixing groove (29) in a sliding and sealing mode, an air bag (18) is fixedly connected to the inner wall of the groove (28), and the air bag (18) is communicated with the fixing groove (29) through a connecting pipe (31).

4. The automatic fire extinguishing device for the distribution box according to claim 1, wherein the moving block (8) is in sealed sliding connection with the cavity (6), and the width of the moving block (8) is larger than that of the liquid outlet (10).

5. The automatic fire extinguishing device for the distribution box according to claim 2, wherein the moving column (22) penetrates through the opening (21) positioned above, the cross section of the limiting rod (27) is of an L-shaped structure, one end of the limiting rod (27) extends into the limiting groove (26), and one end, away from the limiting groove (26), of the limiting rod (27) penetrates through the opening (21) positioned below.

6. The automatic fire extinguishing device of the distribution box is characterized in that the size of the fire partition plate (25) is larger than that of the ventilation opening (17), and the fire partition plate (25) is made of iron.

7. The automatic fire extinguishing device for the distribution box according to claim 2, characterized in that the moving rod (13) penetrates through the side wall of the fixed cylinder (11), and the penetrating position of the moving rod (13) and the fixed cylinder (11) is sealed.

8. A distribution box automatic fire extinguishing apparatus according to claim 3, characterized in that the cross section of the fixing groove (29) is a T-shaped structure, and the connection part of the connecting pipe (31) and the fixing groove (29) is located at the right side of the moving strip (30).

Technical Field

The invention relates to the technical field of distribution boxes, in particular to an automatic fire extinguishing device for a distribution box.

Background

The distribution box mainly comprises a box body, and electric wires, components and parts arranged in the box body, and is widely applied to electric power facilities and can be divided into an indoor distribution box and an outdoor distribution box. Most of the existing distribution boxes are metal shells. The distribution box is an important component forming a low-voltage distribution system, can reasonably distribute electric energy and is convenient for people to open and close the circuit.

Present block terminal arouses the short circuit because the circuit in the box is ageing easily when using, cause the box to catch fire, and traditional block terminal inside generally does not set up the mechanism of putting out a fire, need artifical fire control shower nozzle that uses in fire extinguisher or the building to put out a fire to the block terminal, when outdoor, the staff is difficult to in time discover the condition of a fire, can lead to the intensity of a fire to stretch, cause great incident easily, when indoor, even smoke alarm sends the chimes of doom, the staff still needs certain time from the discovery to the scene, and because the internal circuit of block terminal is comparatively complicated, use the fire control shower nozzle water spray easily to cause the electric shock accident, so, need design a block terminal automatic fire extinguishing device to solve above-mentioned problem.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an automatic fire extinguishing device for a distribution box.

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

an automatic fire extinguishing device for a distribution box comprises a box body, wherein a ventilation opening penetrates through the side wall of the box body, and a dust screen is fixedly connected to the inner wall of the ventilation opening;

the fire extinguishing mechanism is arranged in the box body and comprises a bimetallic strip fixedly connected to the top in the box body, a fixed plate and a fixed box are fixedly connected to the top in the box body, a connecting rod penetrates through the side wall of the fixed plate, a movable plate is fixedly connected to one end, away from the fixed box, of the connecting rod, a baffle plate is fixedly connected in the fixed box, an inclined plane is arranged on the upper wall of the baffle plate, a dilute hydrochloric acid solution is filled in the space above the baffle plate in the fixed box, limestone particles are filled in the space below the baffle plate in the fixed box, a liquid outlet penetrates through the side wall of the baffle plate, a cavity is formed in the baffle plate and is communicated with the cavity, and a movable block is fixedly connected to one end, away from the movable plate, of the connecting rod;

the side wall of the fixing box is fixedly connected with a fixing cylinder, the fixing cylinder is communicated with a space of the fixing box below the baffle plate through an air duct, the lower end of the fixing box is fixedly connected with a steel needle, the steel needle is obliquely arranged towards the balloon, a piston is connected in the fixing cylinder in a sealing and sliding manner, one end of the piston is fixedly connected with a moving rod, the lower end of the fixing plate is fixedly connected with the balloon, the air inlet end of the balloon is communicated with the fixing cylinder through an air outlet pipe, and a dry powder extinguishing agent is filled in the balloon;

the box body is provided with a driving mechanism for isolating air;

and the box body is provided with a pumping mechanism for improving the sealing property.

Preferably, actuating mechanism includes the fixed strip of fixed connection at the box inner wall, the fixed strip lateral wall rotates through the pivot and is connected with the dwang, the dwang lateral wall runs through and is equipped with two openings, the removal pole of carriage release lever lateral wall fixedly connected with removal post, the vent inner wall is equipped with the recess, the top is equipped with the spout in the recess, be equipped with the fire baffle that separates that can reciprocate in the spout, it is equipped with the spacing groove to separate the fire baffle lateral wall, be equipped with the gag lever post in the spout.

Preferably, the pump gas mechanism is including setting up the fixed slot at the box inner wall, the sealed sliding connection of fixed slot inner wall has the removal strip, recess inner wall fixedly connected with gasbag, the gasbag passes through connecting pipe and fixed slot intercommunication.

Preferably, the moving block is connected with the cavity in a sealing and sliding mode, and the width of the moving block is larger than that of the liquid outlet.

Preferably, the movable column penetrates through an opening located above, the cross section of the limiting rod is of an L-shaped structure, one end of the limiting rod extends into the limiting groove, and one end, away from the limiting groove, of the limiting rod penetrates through an opening located below.

Preferably, the size of fire baffle is greater than the size of vent, the material of fire baffle is for iron.

Preferably, the moving rod penetrates through the side wall of the fixed cylinder, and the penetrating position of the moving rod and the fixed cylinder is sealed.

Preferably, the cross section of the fixing groove is a T-shaped structure, and the connection position of the connection pipe and the fixing groove is located at the right side of the moving bar.

The invention has the following beneficial effects:

1. according to the invention, by arranging the fire extinguishing mechanism, when a fire breaks out in the box body, the bimetallic strip is heated and bends towards the left side to drive the moving plate, the connecting rod and the moving block to move left until the liquid outlet is communicated with the cavity, so that a diluted hydrochloric acid solution is contacted with limestone to generate a large amount of carbon dioxide gas, the large amount of carbon dioxide gas enters the balloon, the balloon is rapidly expanded until the balloon is punctured by the steel needle, the balloon is exploded, and further the dry powder extinguishing agent is rapidly dispersed and rapidly drifts to a fire source to cover the surface of the fire source, an isolating layer for obstructing combustion can be formed to extinguish the fire, and the dispersion speed of the dry powder extinguishing agent is greatly increased due to the explosion of the balloon, so that the fire extinguishing efficiency of the device can be improved, and safety accidents caused by longer artificial reaction time are avoided;

2. according to the invention, when the movable rod moves rightwards, the movable column is driven to move rightwards, and when the movable column moves rightwards, the opening above the movable column is extruded, so that the rotating rod rotates clockwise, the limiting rod is further pulled, the limiting rod moves leftwards away from the limiting groove, and at the moment, the fire baffle moves downwards under the action of self gravity, so that the dustproof net can be blocked, the internal space of the box body is isolated from the outside, and the fire spread is prevented;

3. according to the invention, a large amount of carbon dioxide gas continuously enters the box body, so that the air pressure in the box body is continuously increased and is higher than the external atmospheric pressure, the moving block moves to the right, the air bag expands, the air bag is in close contact with the fire baffle, the external air can be prevented from entering the cabinet body, the fire source in the cabinet body is extinguished due to insufficient oxygen, the oxygen concentration in the box body can be greatly reduced by matching with the carbon dioxide gas gradually increased in the box body, the fire is extinguished by virtue of a suffocation effect, and the auxiliary fire extinguishing effect is achieved.

Drawings

Fig. 1 is a schematic structural diagram of an automatic fire extinguishing apparatus for a distribution box according to the present invention;

FIG. 2 is an enlarged view of the structure of the automatic fire extinguishing apparatus A of the distribution box provided by the invention;

FIG. 3 is an enlarged view of the structure of the automatic fire extinguishing apparatus B for the distribution box according to the present invention;

fig. 4 is an enlarged view of a structure at C of the automatic fire extinguishing device for the distribution box according to the present invention.

In the figure: the device comprises a box body 1, a fixing plate 2, a moving plate 3, a bimetallic strip 4, a fixing box 5, a cavity 6, a baffle 7, a moving block 8, a connecting rod 9, a liquid outlet 10, a fixing cylinder 11, a piston 12, a moving rod 13, a steel needle 14, an air outlet pipe 15, a dust screen 16, a vent 17, an air bag 18, a rotating rod 19, a fixing strip 20, an opening 21, a moving column 22, a balloon 23, a sliding groove 24, a fire insulation plate 25, a limiting groove 26, a limiting rod 27, a groove 28, a fixing groove 29, a moving strip 30 and a connecting pipe 31.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-4, a block terminal automatic fire extinguishing device, including box 1, box 1 lateral wall runs through and is equipped with vent 17, vent 17 inner wall fixedly connected with dust screen 16, be equipped with the mechanism of putting out a fire in box 1, the mechanism of putting out a fire includes bimetallic strip 4 of fixed connection top in box 1, bimetallic strip 4's left side is passive layer, the right side is the initiative layer, bimetallic strip 4 is heated and can be crooked, because the coefficient of thermal expansion on each component layer of bimetallic strip 4 is different, when temperature variation, the deformation on initiative layer will be greater than the deformation on passive layer, thereby bimetallic strip 4's whole will be to passive layer one side bending.

The top in the box body 1 is fixedly connected with a fixed plate 2 and a fixed box 5, the side wall of the fixed plate 2 is provided with a connecting rod 9 in a penetrating way, one end of the connecting rod 9 far away from the fixed box 5 is fixedly connected with a movable plate 3, the fixed box 5 is internally fixedly connected with a baffle 7, the upper wall of the baffle 7 is provided with an inclined plane, so that a dilute hydrochloric acid solution can conveniently flow into the lower part of the baffle 7, the space above the baffle 7 in the fixed box 5 is filled with a dilute hydrochloric acid solution, the space below the baffle 7 in the fixed box 5 is filled with limestone particles, the dilute hydrochloric acid can generate a large amount of carbon dioxide gas after contacting the limestone, which is not described in the prior art, the side wall of the baffle 7 is provided with a liquid outlet 10 in a penetrating way, the baffle 7 is internally provided with a cavity 6, the liquid outlet 10 is communicated with the cavity 6, one end of the connecting rod 9 far away from the movable plate 3 is fixedly connected with a movable block 8, and the movable block 8 is connected with the cavity 6 in a sealing and sliding way, the width of moving block 8 is greater than the width of liquid outlet 10 for liquid outlet 10 can be stopped up to moving block 8.

5 lateral wall fixedly connected with solid fixed cylinder 11 of fixed box, solid fixed cylinder 11 passes through the air duct and is located the space intercommunication of baffle 7 below with solid fixed box 5, 5 lower extreme fixedly connected with steel needle 14 of fixed box, steel needle 14 sets up towards the slope of balloon 23, make balloon 23 can be punctured by steel needle 14 when the inflation, solid fixed cylinder 11 internal seal sliding connection has piston 12, 12 one end fixedly connected with carriage release lever 13 of piston, carriage release lever 13 runs through solid fixed cylinder 11 lateral wall, carriage release lever 13 and solid fixed cylinder 11 run through the department sealed, 2 lower extreme fixedly connected with balloons 23 of fixed plate, balloon 23's inlet end passes through outlet duct 15 and solid fixed cylinder 11 intercommunication, balloon 23 intussuseption is filled with the dry powder fire extinguishing agent, the lid can constitute the isolation layer that hinders the burning on the solid burning thing.

The box body 1 is provided with a driving mechanism for isolating air, the driving mechanism comprises a fixed strip 20 fixedly connected with the inner wall of the box body 1, the side wall of the fixed strip 20 is rotatably connected with a rotating rod 19 through a rotating shaft, the side wall of the rotating rod 19 is provided with two openings 21 in a penetrating way, the side wall of the moving rod 13 is fixedly connected with a moving column 22, the moving column 22 penetrates through the opening 21 positioned above, the cross section of the limiting rod 27 is of an L-shaped structure, so that the rotating rod 19 can drive the limiting rod 27 to move in the horizontal direction when rotating, one end of the limiting rod 27 extends into a limiting groove 26, the end of the limiting rod 27 far away from the limiting groove 26 penetrates through the opening 21 positioned below, the inner wall of the vent 17 is provided with a groove 28, the top in the groove 28 is provided with a sliding groove 24, a fire baffle 25 capable of moving up and down is arranged in the sliding groove 24, the size of the fire baffle 25 is larger than that of the vent 17, so that the fire baffle 25 can completely block the vent 17, the material of fire baffle 25 is for the iron system, and the great consequently messenger of density of iron fire baffle 25 is heavier, and has the fire prevention function, and fire baffle 25 lateral wall is equipped with spacing groove 26, is equipped with gag lever post 27 in the spout 24.

Be equipped with the pump gas mechanism that is used for improving the leakproofness on box 1, pump gas mechanism is including setting up the fixed slot 29 at box 1 inner wall, the cross-section of fixed slot 29 is T shape structure, connecting pipe 31 is located the right side of removal strip 30 with the intercommunication department of fixed slot 29, when making removal strip 30 move to the right, make the gas that is located the space on removal strip 30 right side in the fixed slot 29 get into in the gasbag 18, make gasbag 18 inflation, fixed slot 29 inner wall sealing sliding connection has removal strip 30, recess 28 inner wall fixedly connected with gasbag 18, gasbag 18 communicates through connecting pipe 31 and fixed slot 29.

When an electrical component in the box body 1 is on fire, the temperature in the box body 1 rises rapidly, so that the temperature of the bimetallic strip 4 rises rapidly, and the bimetallic strip 4 is heated and bent, because the thermal expansion coefficients of all component layers of the bimetallic strip 4 are different, when the temperature changes, the deformation of the active layer is larger than that of the passive layer, so that the whole bimetallic strip 4 bends towards one side of the passive layer, and the bimetallic strip 4 bends towards the left side, the bimetallic strip 4 drives the movable plate 3, the connecting rod 9 and the movable block 8 to move to the left until the movable block 8 moves to the leftmost end, at the moment, the liquid outlet 10 is communicated with the cavity 6, the dilute hydrochloric acid solution flows out from the liquid outlet 10 under the action of self gravity to contact with limestone and react to generate a large amount of carbon dioxide gas, and the large amount of carbon dioxide gas enters the fixed cylinder 11, so that the air pressure in the fixed cylinder 11 on the left side of the piston 12 increases rapidly, and then the piston 12 is pushed to move right until the piston 12 passes through the communication part between the steel needle 15 and the steel needle 11, at the moment, a large amount of carbon dioxide gas can enter the balloon 23 along the air outlet pipe 15, so that the balloon 23 is rapidly expanded until the balloon 23 is contacted with the steel needle 14, so that the balloon 23 is punctured by the steel needle 14, because the difference between the air pressure in the balloon 23 and the external air pressure is very large, a large amount of gas in the balloon flows outwards, so that the balloon 23 is exploded, further, the dry powder extinguishing agent is rapidly dispersed, the interior of the box body 1 can be rapidly covered, and the dry powder extinguishing agent is covered on the surface of a fire source to form an isolation layer which can hinder combustion, so that the fire can be extinguished in a large range.

Simultaneously, when the carriage release lever 13 moves to the right, can drive and move the post 22 and move to the right, the extrusion is located the opening 21 of top when moving the post 22 and moving to the right for dwang 19 clockwise rotates, and then stimulates gag lever post 27, makes gag lever post 27 move to the left, leaves spacing groove 26 until gag lever post 27, separates the fire board 25 this moment and moves down under self action of gravity, can block dust screen 16, with box 1 inner space isolated with external, prevents that the intensity of a fire from stretching.

Along with the explosion of the balloon 23, the air outlet pipe 15 is communicated with the interior of the box body 1, so that a large amount of carbon dioxide gas generated by reaction can directly enter the box body 1 along the air outlet pipe 15, can reduce the oxygen concentration around the fire source or in the box body 1, generate the suffocation effect to extinguish fire and prevent the re-burning, and along with the continuous entering of a large amount of carbon dioxide gas into the box body 1, the pressure in the box body 1 is continuously increased and is larger than the external atmospheric pressure, and thus the moving bar 30 moves to the right, and when the moving bar 30 moves to the right, the gas in the space on the right side of the moving bar 30 in the fixing groove 29 is introduced into the air bag 18, so that the air bag 18 is expanded, thereby leading the air bag 18 to be tightly contacted with the fire baffle 25, preventing the outside air from entering the cabinet body, therefore, the fire source in the cabinet body is extinguished due to insufficient oxygen, and the auxiliary fire extinguishing effect is achieved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.