CN114122942A

CN114122942A - Block terminal with fire prevention function

Info

Publication number: CN114122942A
Application number: CN202111464684.7A
Authority: CN
Inventors: 王凌
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-03-01

Abstract

The invention discloses a distribution box with a fireproof function, which relates to the technical field of distribution boxes and at least comprises a box body, wherein the box body comprises side plates on two sides, a top plate on the upper part, a bottom plate on the lower part and a back plate on the rear part, an electric element is fixed on the back plate, and a plurality of ventilation strip holes are formed in the side plates; the fire-proof mechanism comprises a lifting sealing plate, a lifting strip, a fixing strip, a plurality of tension springs, a plurality of first heat-sensitive glass bodies, a glass body positioning strip, a first fire extinguishing tank and a valve; the lifting seal plate is attached to the corresponding side plate, the lifting seal plate can move up and down in a lifting mode relative to the corresponding side plate, the lifting seal plate is provided with a communication strip hole communicated with the ventilation strip hole in the corresponding side plate, and the communication strip hole corresponds to the ventilation strip hole one to one. The invention provides a distribution box which can prevent the external fire of a box body from entering the box body and has a fireproof function.

Description

Block terminal with fire prevention function

Technical Field

The invention relates to the technical field of distribution boxes, in particular to a distribution box with a fireproof function.

Background

The distribution box is mainly used for loading electrical elements such as a control module, a switch module, a protection module and the like in a distribution system, and is generally applied to places such as power plants, factories, houses and the like. The installation place of block terminal is more complicated, if the installation place of block terminal arouses the conflagration because of inevitable factor, will have the risk that the intensity of a fire gets into the block terminal. Once the fire enters the distribution box, the electrical elements in the box body are burnt out if the fire is light, the price of some electrical elements is not low, and the electrical elements in the box body are short-circuited if the fire is heavy, so that a larger fire is caused, and even fire points elsewhere are caused.

Disclosure of Invention

The invention aims to solve the problems and provides a distribution box which can prevent the external fire of a box body from entering the box body and has a fireproof function.

In order to achieve the purpose, the invention adopts the following technical scheme: a distribution box with a fireproof function at least comprises a box body, wherein the box body comprises side plates on two sides, a top plate on the upper part, a bottom plate on the lower part and a back plate on the rear part, an electric element is fixed on the back plate, and a plurality of ventilation strip holes are formed in the side plates;

the fire-proof mechanism comprises a lifting sealing plate, a lifting strip, a fixing strip, a plurality of tension springs, a plurality of first heat-sensitive glass bodies, a glass body positioning strip, a first fire extinguishing tank and a valve;

the lifting seal plate is attached to the corresponding side plate and can move up and down relative to the corresponding side plate, a positioning guide mechanism of the lifting seal plate is arranged between the lifting seal plate and the corresponding side plate, the lifting seal plate is provided with communicating strip holes communicated with the ventilating strip holes on the corresponding side plate, and the communicating strip holes are in one-to-one correspondence with the ventilating strip holes;

the lifting strips are transversely fixed on the inner wall of the lifting sealing plate, the fixing strips are transversely fixed on the inner wall of the side plate, the fixing strips are positioned below the lifting strips, the plurality of tension springs are arranged between the lifting strips and the fixing strips, the upper ends of the tension springs are fixed with the bottoms of the lifting strips, and the lower ends of the tension springs are fixed with the tops of the fixing strips;

the glass body positioning strip is positioned at the top of the fixing strip and located below the lifting strip, the glass body positioning strip comprises a transverse communicating pipe and a plurality of vertical branch pipes, the transverse communicating pipe is transversely arranged, two ends of the transverse communicating pipe are blocked, the vertical branch pipes are vertically arranged at intervals, the lower ends of the vertical branch pipes are fixed on the pipe wall of the transverse communicating pipe and are communicated with the pipe cavity of the transverse communicating pipe, the upper ends of the vertical branch pipes are open, a first piston is arranged in each vertical branch pipe, the first piston is in sliding sealing fit with the inner wall of each vertical branch pipe, the first piston is located at the upper opening of each vertical branch pipe, and insulating liquid is filled in each vertical branch pipe and each transverse communicating pipe on the lower side of the first piston;

a plurality of top columns are fixed at the bottoms of the lifting strips, the top columns are vertically arranged, the top columns and the vertical branch pipes are in one-to-one correspondence and are oppositely arranged, a first heat-sensitive glass body is arranged between each top column and the corresponding vertical branch pipe, the first heat-sensitive glass body is vertically arranged, the upper end of the first heat-sensitive glass body is abutted against the bottom of the top column, the lower end of the first heat-sensitive glass body is abutted against the top of a first piston in the vertical branch pipe, and the first heat-sensitive glass body corresponds to at least one communication strip hole;

first fire extinguishing tank and valve are all fixed a position on the curb plate of lift shrouding top, are equipped with the fire extinguishing agent in the first fire extinguishing tank, have a discharge gate on the first fire extinguishing tank, and this discharge gate communicates with the one end port of valve, is equipped with the handle that is used for the control flap switching on the valve, and the afterbody of handle is connected with the top of lift shrouding through a connecting rod, and the connecting rod is articulated with the afterbody of handle, and the connecting rod also articulates with the top of lift shrouding, and the lift shrouding moves down and can drive the handle rotation.

Preferably, the transverse communicating pipes on the side plates on the two sides are communicated through pipe fittings, and insulating liquid is filled in the communicated pipe fittings.

Preferably, the top of the first piston and the bottom of the top column are both provided with grooves for positioning the first heat-sensitive glass body.

Preferably, a secondary cooling mechanism is arranged in the box body and comprises a second fire extinguishing tank and a second trigger switch, a fire extinguishing agent is arranged in the second fire extinguishing tank, a discharge hole is formed in the second fire extinguishing tank, the second trigger switch comprises a switch shell, a front ejector block, a second heat-sensitive glass body, a second piston, a spring and a rear ejector block, the switch shell is tubular, the front ejector block is arranged at an opening at one end of the switch shell, the rear ejector block is arranged at an opening at the other end of the switch shell, an air pressure balancing hole is formed in the rear ejector block, the second piston is slidably arranged in the switch shell, the second piston and the switch shell are in sliding sealing fit, the spring is arranged between the second piston and the rear ejector block, one end of the spring is abutted against the second piston, the other end of the spring is abutted against the rear ejector block, the second heat-sensitive glass body is arranged between the second piston and the front ejector block, second temperature sensing vitreous body one end supports with the second piston and leans on, and the other end supports with preceding kicking block and supports, has seted up a feed inlet and a plurality of heat transfer hole on switch shell's the lateral wall, and the inside of feed inlet corresponds with the lateral wall of second piston and is blocked by the second piston, and the outside of feed inlet is connected with the discharge gate of second jar that goes out a fire, and a plurality of heat transfer holes correspond with second temperature sensing vitreous body position.

Therefore, the invention has the following beneficial effects: 1. the lifting sealing plate is arranged, when the outside of the distribution box catches fire, the lifting sealing plate can be triggered to automatically move downwards, so that the distribution box forms a closed box body, and the fire outside the box body is prevented from entering the box body; 2. when the lifting sealing plate moves downwards, the valve of the first fire extinguishing tank can be opened, so that the fire extinguishing agent in the first fire extinguishing tank can be sprayed out from the valve, not only can the fire which enters the box body be extinguished, but also the temperature in the box body can be reduced, and the effect of protecting the electric elements in the box body is achieved; 3. be equipped with secondary cooling mechanism in the box, when the box temperature risees once more, can trigger switch by the second for the fire extinguishing agent blowout in the second fire extinguishing tank plays the effect of the interior secondary cooling of box, prolongs the rescue time for the fire fighter.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a sectional view taken in the direction of a-a in fig. 1.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is an enlarged view at b in fig. 2.

1: a box body; 101: a side plate; 102: a back plate; 103: a vent strip hole; 2: lifting and closing plates; 201: communicating the bar holes; 3: a lifting bar; 301: a top pillar; 4: a fixing strip; 5: a tension spring; 6: a first heat-sensitive vitreous body; 7: a vitreous body positioning strip; 701: a transverse communicating pipe; 702: a vertical branch pipe; 703: a first piston; 704: an insulating liquid; 8: a first fire suppression canister; 9: a valve; 901: a handle; 10: a connecting rod; 11: a second fire suppression canister; 12: a second trigger switch; 1201: a switch housing; 1202: a front top block; 1203: a second heat sensitive vitreous body; 1204: a second piston; 1205: a spring; 1206: a rear ejector block; 1207: an air pressure balancing hole; 1208: a feed inlet; 1209: a heat transfer aperture.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, the distribution box with a fire prevention function at least comprises a box body 1, wherein the box body 1 comprises side plates 101 on two sides, a top plate on the upper part, a bottom plate on the lower part and a back plate 102 on the rear part, an electric element is fixed on the back plate 102, and a plurality of ventilation strip holes 103 are formed in the side plates 101.

The two side plates 101 positioned in the box body 1 are respectively provided with a set of fire protection mechanism, and the fire protection mechanism comprises a lifting seal plate 2, a lifting strip 3, a fixing strip 4, two tension springs 5, five first heat-sensitive glass bodies 6, a glass body positioning strip 7, a first fire extinguishing tank 8 and a valve 9.

The lift shrouding 2 with correspond the laminating of curb plate 101, and the relative curb plate 101 that corresponds of lift shrouding 2 can do the oscilaltion and remove, lift shrouding 2 with correspond and be equipped with the location guiding mechanism of lift shrouding 2 between the curb plate 101, set up on the lift shrouding 2 with the intercommunication strip hole 201 that corresponds the ventilation strip hole 103 intercommunication on the curb plate 101, intercommunication strip hole 201 and ventilation strip hole 103 one-to-one.

Lifting strip 3 transversely fixes at 2 inner walls of lift shrouding, 4 transversely fixes at curb plate 101 inner walls of fixed strip, and fixed strip 4 is located lifting strip 3 below, two extension springs 5 set up between lifting strip 3 and fixed strip 4, and are located lifting strip 3's both sides respectively, and the upper end of extension spring 5 is fixed with lifting strip 3's bottom, and the lower extreme of extension spring 5 is fixed with the top of fixed strip 4.

The glass body positioning strip 7 is positioned at the top of the fixing strip 4 and located below the lifting strip 3, the glass body positioning strip 7 comprises a transverse communicating pipe 701 and five vertical branch pipes 702, the transverse communicating pipe 701 is transversely positioned at the top of the fixing strip 4, two ends of the transverse communicating pipe 701 are plugged, the five vertical branch pipes 702 are arranged at intervals in a vertical equal distance mode, the lower ends of the vertical branch pipes 702 are fixed to the pipe wall of the transverse communicating pipe 701 and communicated with the pipe cavities of the transverse communicating pipe 701, the upper ends of the vertical branch pipes 702 are open, a first piston 703 is arranged in each vertical branch pipe 702, the first piston 703 is matched with the inner wall of each vertical branch pipe 702 in a sliding sealing mode, the first piston 703 is located at the upper end of each vertical branch pipe 702, the vertical branch pipes 702 on the lower side of the first piston 703 and the transverse communicating pipe 701 are filled with insulating liquid 704, and the insulating liquid 704 is transformer oil.

The bottom of lifting strip 3 is fixed with five fore-posts 301, the equal vertical setting of five fore-posts 301, fore-post 301 and vertical branch pipe 702 one-to-one and relative setting, every fore-post 301 and correspond all to be equipped with a first temperature sensing glass body 6 between the vertical branch pipe 702, the vertical setting of first temperature sensing glass body 6, the upper end of first temperature sensing glass body 6 and the bottom of fore-post 301 support and lean on, and the lower extreme of first temperature sensing glass body 6 and the first piston 703 top in the vertical branch pipe 702 support and lean on, and the top of first piston 703 and the bottom of fore-post 301 all are equipped with the recess that is used for fixing a position first temperature sensing glass body 6, and extension spring 5 is tensile state, and first temperature sensing glass body 6 presss from both sides tight location through the 5 effects of extension spring. The first heat-sensitive glass body 6 corresponds in position to the at least one communication bar hole 201.

First jar 8 and the valve 9 of putting out a fire all fix a position on the curb plate of lift shrouding 2 top, be equipped with the fire extinguishing agent in the jar 8 of putting out a fire, the fire extinguishing agent is liquid carbon dioxide, there is a discharge gate on the jar 8 of putting out a fire, this discharge gate communicates with the one end port of valve 9, be equipped with the handle 901 that is used for controlling the valve 9 switching on the valve 9, the afterbody of handle 901 is connected with lift shrouding 2's top through a connecting rod 10, connecting rod 10 is articulated with the afterbody of handle 901, connecting rod 10 is also articulated with lift shrouding 2's top, lift shrouding 2 moves down and can drive handle 901 and rotate.

The transverse communication pipes 701 on the side plates 101 on the two sides are communicated with each other through pipe fittings, insulating liquid 704 is filled in the communicated pipe fittings, and the insulating liquid 704 is also transformer oil.

A secondary cooling mechanism is arranged in the box body 1, the secondary cooling mechanism comprises a second fire extinguishing tank 11 and a second trigger switch 12, a fire extinguishing agent is arranged in the second fire extinguishing tank 11 and is liquid carbon dioxide, a discharge hole is formed in the second fire extinguishing tank 11, the second trigger switch 12 comprises a switch shell 1201, a front top block 1202, a second heat-sensitive glass body 1203, a second piston 1204, a spring 1205 and a rear top block 1206, the switch shell 1201 is tubular, the front top block 1202 is arranged at an opening at one end of the switch shell 1201, the rear top block 1206 is arranged at an opening at the other end of the switch shell 1201, an air pressure balance hole 1207 is formed in the rear top block 1206, the second piston 1204 is slidably arranged in the switch shell 1201, the second piston 1204 is in sliding sealing fit with the switch shell 1201, the spring 1205 is arranged between the second piston 1204 and the rear top block 1206, one end of the spring 1205 is abutted against the second piston 1204, the other end supports with back kicking block 1206 and leans on, second temperature sensing vitreous body 1203 is located between second piston 1204 and the preceding kicking block 1202, second temperature sensing vitreous body 1203 one end supports with second piston 1204 and leans on, the other end supports with preceding kicking block 1202 and leans on, all be equipped with the recess that is used for fixing a position second temperature sensing vitreous body 1203 on second piston 1204 and the preceding kicking block 1202, a feed inlet 1208 and a plurality of heat transfer hole 1209 have been seted up on the lateral wall of switch shell 1201, the inside of feed inlet 1208 corresponds with the lateral wall of second piston 1204 and is shutoff by second piston 1204, the outside and the discharge gate of second jar 11 that extinguish, a plurality of heat transfer hole 1209 correspond with second temperature sensing vitreous body 1203 position.

When a fire breaks out of the box body 1, the fire and the temperature are transmitted into the box body 1 through the ventilation strip holes 103 on the side plates 101, the first heat-sensitive glass body 6 in the box body 1 is close to the ventilation strip holes 103, and the contact temperature is high. When the fire temperature entering the ventilation bar hole 103 exceeds the fracture critical temperature of the first heat-sensitive glass bodies 6, one or more first heat-sensitive glass bodies 6 are fractured, the top parts of the first pistons 703 corresponding to the fractured first heat-sensitive glass bodies 6 lose the downward pressure supporting force and can move upwards, and the first pistons 703 corresponding to the complete first heat-sensitive glass bodies 6 can be moved downwards.

At this time, in the side plate 101 on the side of the broken first heat-sensitive glass body 6, under the action of the tension spring 5, the lifting and closing plate 2, the lifting bar 3, the ejection column 301 and the complete first heat-sensitive glass body 6 all move downwards synchronously, and the complete first heat-sensitive glass body 6 presses the corresponding first piston 703 downwards, and the first piston 703 moving downwards causes the first piston 703 corresponding to the broken first heat-sensitive glass body 6 to move upwards or be ejected out of the vertical branch pipe 702 by pressing the insulating liquid 704. The lower end of the column to be jacked 301 abuts against the upper end of the vertical branch pipe 702, and the side plate 101 reaches the lowest position.

In the other side plate 101, since the transverse communication pipes 701 of the two side plates 101 are communicated with each other by pipe members, even if the first heat-sensitive glass body 6 is not broken in the side plate 101, the same downward movement can be performed.

At this moment, intercommunication strip hole 201 on the lift shrouding 2 staggers with ventilation strip hole 103 on the curb plate 101, and ventilation strip hole 103 on the curb plate 101 is by the shutoff of lift shrouding 2, forms a confined space in the box 1, prevents effectively that the outer intensity of a fire of box 1 from getting into, tentatively accomplishes the fire prevention function. Secondly, when the lifting sealing plate 2 moves down, the handle 901 of the valve 9 is driven to rotate through the transmission of the connecting rod 10, the valve 9 is opened, the fire extinguishing agent of the first fire extinguishing tank 8 is gasified and released through the valve 9, the fire extinguishing agent can be sprayed out of the box body 1, the box body 1 can also be used for cooling, the effect of protecting the electric elements in the box body 1 is achieved, and the secondary fire prevention function is completed.

And, there is the secondary cooling mechanism in the box 1, when the temperature in the box 1 rises again, when the rupture critical temperature of the second heat-sensitive vitreous body 1203 in the second trigger switch 12 is exceeded, the second heat-sensitive vitreous body 1203 ruptures, the spring 1205 pushes the second piston 1204 to move, the feed inlet 1208 on the switch shell 1201 is opened, the fire extinguishing agent in the second fire extinguishing pot 11 is released to the box 1 through the vaporization of the heat transfer hole 1209 and the atmospheric pressure balance hole 1207, play a role in secondary cooling and fire prevention in the box 1, have also lengthened the rescue time for the fire fighter.

Claims

1. A distribution box with a fireproof function at least comprises a box body (1), wherein the box body (1) comprises side plates (101) on two sides, a top plate on the upper part, a bottom plate on the lower part and a back plate (102) on the rear part, an electric element is fixed on the back plate (102), and a plurality of ventilation strip holes (103) are formed in the side plates (101);

the method is characterized in that: a set of fireproof mechanism is respectively arranged on the side plates (101) at two sides in the box body (1), and the fireproof mechanism comprises a lifting sealing plate (2), a lifting strip (3), a fixing strip (4), a plurality of tension springs (5), a plurality of first heat-sensitive glass bodies (6), a glass body positioning strip (7), a first fire extinguishing tank (8) and a valve (9);

the lifting seal plate (2) is attached to the corresponding side plate (101), the lifting seal plate (2) can move up and down relative to the corresponding side plate (101), a positioning guide mechanism of the lifting seal plate (2) is arranged between the lifting seal plate (2) and the corresponding side plate (101), the lifting seal plate (2) is provided with communicating strip holes (201) communicated with the ventilating strip holes (103) in the corresponding side plate (101), and the communicating strip holes (201) are in one-to-one correspondence with the ventilating strip holes (103);

the lifting strip (3) is transversely fixed on the inner wall of the lifting sealing plate (2), the fixing strip (4) is transversely fixed on the inner wall of the side plate (101), the fixing strip (4) is positioned below the lifting strip (3), the plurality of tension springs (5) are arranged between the lifting strip (3) and the fixing strip (4), the upper ends of the tension springs (5) are fixed with the bottom of the lifting strip (3), and the lower ends of the tension springs (5) are fixed with the top of the fixing strip (4);

the glass body positioning strip (7) is positioned at the top of the fixed strip (4) and below the lifting strip (3), the glass body positioning strip (7) comprises a transverse communicating pipe (701) and a plurality of vertical branch pipes (702), the transverse communicating pipes (701) are transversely arranged, two ends of each transverse communicating pipe are blocked, the vertical branch pipes (702) are vertically arranged at intervals, the lower ends of the vertical branch pipes (702) are fixed on the pipe walls of the transverse communicating pipes (701) and are communicated with the pipe cavities of the transverse communicating pipes (701), the upper ends of the vertical branch pipes (702) are open, first pistons (703) are arranged in the vertical branch pipes (702), the first piston (703) is in sliding seal fit with the inner wall of the vertical branch pipe (702), the first piston (703) is positioned at the upper opening of the vertical branch pipe (702), and the vertical branch pipe (702) on the lower side of the first piston (703) and the transverse communicating pipe (701) are filled with insulating liquid (704);

a plurality of top columns (301) are fixed at the bottoms of the lifting strips (3), the top columns (301) are vertically arranged, the top columns (301) correspond to the vertical branch pipes (702) one by one and are oppositely arranged, a first heat-sensitive glass body (6) is arranged between each top column (301) and the corresponding vertical branch pipe (702), the first heat-sensitive glass body (6) is vertically arranged, the upper end of the first heat-sensitive glass body (6) is abutted against the bottom of the top column (301), the lower end of the first heat-sensitive glass body (6) is abutted against the tops of first pistons (703) in the vertical branch pipes (702), and the first heat-sensitive glass body (6) corresponds to at least one communication strip hole (201);

first jar of putting out a fire (8) and valve (9) are all fixed a position on the curb plate of lift shrouding (2) top, be equipped with the fire extinguishing agent in jar of putting out a fire (8), there is a discharge gate on jar of putting out a fire (8), this discharge gate communicates with the one end port of valve (9), be equipped with handle (901) that are used for controlling valve (9) switching on valve (9), the afterbody of handle (901) is connected with the top of lift shrouding (2) through a connecting rod (10), connecting rod (10) are articulated with the afterbody of handle (901), connecting rod (10) are also articulated with the top of lift shrouding (2), lift shrouding (2) move down and can drive handle (901) and rotate.

2. The distribution box with the fire-proof function according to claim 1, wherein: the transverse communicating pipes (701) on the side plates (101) on the two sides are communicated through pipe fittings, and insulating liquid (704) is filled in the communicated pipe fittings.

3. The distribution box with a fire protection function according to claim 1 or 2, wherein: the top of the first piston (703) and the bottom of the top column (301) are both provided with grooves for positioning the first heat-sensitive glass body (6).

4. The distribution box with a fire protection function according to claim 1 or 2, wherein: the fire extinguishing box is characterized in that a secondary cooling mechanism is arranged in the box body (1), the secondary cooling mechanism comprises a second fire extinguishing tank (11) and a second trigger switch (12), a fire extinguishing agent is arranged in the second fire extinguishing tank (11), a discharge hole is formed in the second fire extinguishing tank (11), the second trigger switch (12) comprises a switch shell (1201), a front top block (1202), a second heat-sensitive glass body (1203), a second piston (1204), a spring (1205) and a rear top block (1206), the switch shell (1201) is tubular, the front top block (1202) is arranged at an opening at one end of the switch shell (1201), the rear top block (1206) is arranged at an opening at the other end of the switch shell, an air pressure balancing hole (1207) is formed in the rear top block (1206), the second piston (1204) is slidably arranged in the switch shell (1204), and the switch shell (1204) are in sliding sealing fit, spring (1205) is located between second piston (1204) and back kicking block (1206), and spring (1205) one end supports with second piston (1204) and leans on, and the other end supports with back kicking block (1206) and leans on, second temperature sensing glass body (1203) are located between second piston (1204) and preceding kicking block (1202), and second temperature sensing glass body (1203) one end supports with second piston (1204) and leans on, and the other end supports with preceding kicking block (1202) and leans on, has seted up a feed inlet (1208) and a plurality of heat transfer hole (1209) on the lateral wall of switch shell (1201), and the inside of feed inlet (1208) corresponds with the lateral wall of second piston (1204) and is shutoff by second piston (1204), and the outside of feed inlet (1208) is connected with the discharge gate of second jar (11) that extinguish fire, and a plurality of heat transfer hole (1209) correspond with second temperature sensing glass body (1203) position.