CN110571676B - Distribution box - Google Patents

Abstract

The invention discloses a distribution box and relates to the technical field of power equipment. The technical key points are as follows: the utility model provides a distribution box, includes box, chamber door and installs the inside electrical apparatus fixed plate that has electrical components at the box, a plurality of louvres have been seted up on the box, a serial communication port, the roof inner wall fixedly connected with soft magnet of box, the one side actuation that the box roof was kept away from to soft magnet has permanent magnet, be connected with the compression spring who is in compression state between soft magnet and the permanent magnet, one side that permanent magnet kept away from soft magnet is provided with the insulating layer, be provided with on the insulating layer rather than the vertically insulating inserted sheet, the below of insulating inserted sheet is provided with left contact and the right contact with bus connection respectively, left side contact and right contact elasticity butt just use insulating inserted sheet to set up as the plane of symmetry. The invention has the advantages of timely power off when a fire disaster happens and reducing the risk of open fire spreading along the electric wire.

Description

Distribution box

Technical Field

The invention relates to the technical field of power equipment, in particular to a distribution box.

Background

The distribution box is a low-voltage distribution box formed by assembling switch equipment, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electrical wiring requirement. In normal operation, the circuit can be switched on or off by means of a manual or automatic switch. When the fault or abnormal operation occurs, the circuit is cut off or an alarm is given by the aid of the protective electric appliance. The measuring instrument can display various parameters in operation, and can also adjust some electrical parameters to prompt or send out signals for deviation from normal working state.

Inside more the electrical components module and the various discrete electronic components who generates heat of integrated great heat usually of block terminal, these electrical components work in high temperature environment for a long time, not only can age in advance, shorten life, in addition, in case the inside high temperature of block terminal, will seriously influence control accuracy and control stability, lead to electrical components to burn even, cause the accident, and dust, piece get into easily and cause the short circuit and take place the burning in the regulator cubicle.

The Chinese patent with the publication number of CN108695734A discloses a high-temperature-resistant and fireproof distribution box, which comprises a box body and a box door, wherein the box body and the box door are both made of fireproof plates, a storage cavity is arranged at the top end of the box body, the storage cavity comprises a side plate and a supporting plate at the lower end, a first sleeve ring is arranged at the lower end of the side plate, a second sleeve ring is arranged on the peripheral edge of the supporting plate, a pull rope penetrates through the first sleeve ring and the second sleeve ring, and when the pull rope is in a tensioning state, the lower end of the storage cavity is sealed by the supporting plate; and fire extinguishing sand is filled in the storage cavity.

Distribution box in the above-mentioned patent when the conflagration takes place inside, the stay cord can be blown by naked light, and the stay cord breaks away from first lantern ring and second lantern ring under the gravity of layer board and sand of putting out a fire for the layer board breaks away from the curb plate, and the sand of putting out a fire of storage intracavity can drop downwards, thereby realizes putting out a fire to the distribution box. However, because the number of the electric wires in the distribution box is large, once the electric wires are on fire, the burning speed is very high, and the electric wires are easy to spread along with the line, the fire extinguishing sand is used for extinguishing the fire only after the pull rope is blown by open fire, and the electric wires which are on fire and cannot be extinguished in time exist in hysteresis, so that great economic loss is easily caused.

Disclosure of Invention

The invention aims to provide a distribution box which has the advantages of timely powering off in case of fire and reducing the risk of open fire spreading along an electric wire.

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

the utility model provides a distribution box, includes box, chamber door and installs the inside electrical apparatus fixed plate that has electrical components at the box, a plurality of louvres have been seted up on the box, the roof inner wall fixedly connected with soft magnet of box, the one side actuation that the box roof was kept away from to soft magnet has permanent magnet, be connected with the compression spring that is in compression state between soft magnet and the permanent magnet, one side that permanent magnet kept away from soft magnet is provided with the insulating layer, be provided with on the insulating layer rather than vertically insulating inserted sheet, the below of insulating inserted sheet is provided with left contact and right contact with bus connection respectively, left side contact and right contact elasticity butt just use insulating inserted sheet to set up as the plane of symmetry.

Through adopting above-mentioned technical scheme, because the box generally adopts metal material to make, the heat conductivity is better, when the unexpected conflagration that takes place in the block terminal, the box gives soft magnet with heat transfer rapidly, when soft magnet heaies up to the temperature of self demagnetization, magnetism weakens or disappears temporarily, compression spring's elasticity is greater than soft magnet and permanent magnet's suction this moment, compression spring extension drives permanent magnet downstream, permanent magnet drives insulating inserted sheet downstream and inserts between left contact and the right contact, thereby make the electric wire outage in the block terminal, reduce the risk that open fire spread along the electric wire.

Furthermore, bosses are arranged on the opposite surfaces of the soft magnet and the permanent magnet, the compression springs are located around the bosses, guide columns are arranged on the surfaces of the soft magnet, facing the permanent magnet, and penetrate through the permanent magnet and are in sliding connection with the permanent magnet.

Through adopting above-mentioned technical scheme, compression spring when extension, drives permanent magnet along the guide post motion to make insulating inserted sheet accurate insert between left contact and the right contact, avoid insulating inserted sheet skew.

Further, the louvre symmetric distribution is on two relative lateral walls of box, be provided with two closing plates corresponding with the louvre position in the box, the inside wall of box is located the louvre and has seted up the recess around, two all be connected with the extension spring that is in tensile state between closing plate and the recess, two be connected with the stay cord between the closing plate, the stay cord is located between insulating inserted sheet and the left contact.

Through adopting above-mentioned technical scheme, when insulating inserted sheet downstream, can cut off the stay cord, the sealed louvre of two closing plates is driven in the extension spring shrink, lies in the recess behind the extension spring shrink to make the box sealed, reach the purpose of stifling and putting out a fire.

Furthermore, the inner wall of the groove is provided with a guide rod along the axial direction of the extension spring, and the guide rod penetrates through the sealing plate and is in sliding connection with the sealing plate.

Through adopting above-mentioned technical scheme, the guide bar plays support and guide effect, and after the stay cord was cut off, extension spring shrink drove the closing plate and moves along the guide bar axis direction to avoid the closing plate to receive the influence of gravity can not the totally enclosed louvre.

Furthermore, the vertical section of one end of the insulating insertion piece facing the left contact is V-shaped.

Through adopting above-mentioned technical scheme for insulating inserted sheet inserts more easily between left contact and the right contact, also cuts off the stay cord more easily simultaneously.

Furthermore, an air bag is arranged below the left contact and the right contact in the box body, and compressed non-combustible gas is filled in the air bag.

Through adopting above-mentioned technical scheme, because there is certain oxygen in addition in the box, open flame extinguishes by oneself and needs certain time, when the below of insulating inserted sheet motion to left contact, can puncture the gasbag, the box is full of rapidly to the incombustible gas of gasbag internal compression, can play the supplementary effect of putting out a fire. The gasbag need set up in the stay cord below, like this, after the sealed louvre of closing plate, the gasbag just is stabbed, can avoid incombustible gas to leak.

Furthermore, the air bag is filled with a dry powder extinguishing agent.

Through adopting above-mentioned technical scheme, when the gasbag was punctured, the powder extinguishing agent blowout, the cooperation can put out a fire fast at the fire source surface, the incombustible gas.

Further, the below that is located left contact and right contact in the box is provided with wireless infrared ray sensor, wireless infrared ray sensor's transmitting terminal and receiving terminal are located the both sides of insulating inserted sheet motion path, wireless infrared ray sensor wireless connection has the controller that is located the box body outside, the controller electricity is connected with the alarm.

Through adopting above-mentioned technical scheme, after insulating inserted sheet moved between wireless infrared ray sensor's transmitting terminal and the receiving terminal, wireless infrared ray sensor gave the controller with signal transmission, and the alarm is reported to the police to remind people in time to handle, further reduce the loss.

Compared with the prior art, the invention has the beneficial effects that:

(1) when a fire accident happens in the distribution box, the box body rapidly transfers heat to the soft magnet, when the soft magnet is heated to the demagnetizing temperature, the magnetism is temporarily weakened or disappeared, the elasticity of the spring is larger than the attraction force of the soft magnet and the permanent magnet, the spring is stretched to drive the permanent magnet to move downwards, and the permanent magnet drives the insulating insertion piece to move downwards and be inserted between the left contact and the right contact, so that the power of an electric wire in the distribution box is cut off, and the risk that open fire spreads along the electric wire is reduced;

(2) by arranging the sealing plates and the extension springs, when the insulating insertion piece moves downwards, the stay cord can be cut off, the extension springs contract to drive the two sealing plates to seal the heat dissipation holes, and the extension springs contract to be positioned in the grooves, so that the box body is sealed, and the purpose of extinguishing fire by suffocation is achieved;

(3) by arranging the air bag, compressed non-combustible gas and dry powder extinguishing agent are filled in the air bag, when the insulating insertion piece moves to the position below the left contact, the air bag can be punctured, the box body is quickly filled with the compressed non-combustible gas in the air bag, the auxiliary fire extinguishing effect can be realized, the dry powder extinguishing agent is sprayed out to cover the surface of a fire source, and the fire can be quickly extinguished by matching with the non-combustible gas;

(4) through setting up wireless infrared ray sensor, controller and alarm, after insulating inserted sheet moved between wireless infrared ray sensor's transmitting terminal and the receiving terminal, wireless infrared ray sensor gave the controller with signal transmission, and the alarm is reported to the police to remind people in time to handle, further reduce the loss.

Drawings

FIG. 1 is an overall schematic view of the present invention;

FIG. 2 is a right side view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a partial cross-sectional view of the present invention;

fig. 5 is an enlarged view of a portion B in fig. 4.

Reference numerals: 1. a box body; 2. a box door; 3. an electric appliance fixing plate; 4. heat dissipation holes; 5. soft magnetic iron; 6. a permanent magnet; 7. a compression spring; 8. an insulating layer; 9. insulating insertion sheets; 10. a left contact; 11. a right contact; 12. a boss; 13. a guide post; 14. a sealing plate; 15. a groove; 16. an extension spring; 17. pulling a rope; 18. a guide bar; 19. an air bag; 20. a wireless infrared sensor; 201. a transmitting end; 202. a receiving end; 21. a controller; 22. an alarm.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

As shown in fig. 1 to 3, a distribution box includes a box body 1, a box door 2 and an electrical fixing plate 3 installed inside the box body 1 and having electrical components, wherein a plurality of heat dissipation holes 4 are symmetrically formed on two opposite sidewalls of the box body 1.

As shown in fig. 3 and 4, a soft magnet 5 is fixedly connected to the inner wall of the top plate of the box body 1, a permanent magnet 6 is attracted to one side, away from the top plate of the box body 1, of the soft magnet 5, a compression spring 7 in a compressed state is fixedly connected between the soft magnet 5 and the permanent magnet 6, bosses 12 are integrally formed on opposite sides of the soft magnet 5 and the permanent magnet 6, the compression spring 7 is located around the bosses 12, a guide post 13 is fixedly connected to one side, facing the permanent magnet 6, of the soft magnet 5, and the guide post 13 penetrates through the permanent magnet 6 and is in sliding connection with the permanent magnet 6.

One side of the permanent magnet 6, which is far away from the soft magnet 5, is fixedly connected with an insulating layer 8, the insulating layer 8 can be made of insulating materials such as ceramics, the insulating layer 8 is fixedly connected with an insulating insertion sheet 9 which is perpendicular to the insulating layer 8, a left contact 10 and a right contact 11 which are respectively connected with a bus are arranged below the insulating insertion sheet 9, and the left contact 10 and the right contact 11 are elastically abutted and are symmetrically arranged by taking the insulating insertion sheet 9 as a symmetrical plane.

When a fire accident occurs in the distribution box, the box body 1 rapidly transfers heat to the soft magnet 5, when the soft magnet 5 is heated to the temperature of self demagnetization, magnetism is temporarily weakened or disappears, the elasticity of the compression spring 7 is greater than the attraction of the soft magnet 5 and the permanent magnet 6, the compression spring 7 extends to drive the permanent magnet 6 to move downwards, the permanent magnet 6 drives the insulation insertion piece 9 to move downwards and be inserted between the left contact 10 and the right contact 11, and therefore the power of an electric wire in the distribution box is cut off, and the risk that open fire diffuses along the electric wire is reduced.

As shown in fig. 4 and 5, two sealing plates 14 corresponding to the positions of the heat dissipation holes 4 are arranged in the box body 1, the sealing plates 14 can completely cover the heat dissipation holes 4, grooves 15 are formed around the inner side wall of the box body 1, the two sealing plates 14 and the grooves 15 are connected with each other by a tension spring 16 in a tension state, a pull rope 17 is connected between the two sealing plates 14, and the pull rope 17 is located between the insulating insertion sheet 9 and the left contact 10. When the insulating insertion sheet 9 moves downwards, the pull rope 17 can be cut off, the extension spring 16 contracts to drive the two sealing plates 14 to seal the heat dissipation holes 4, and the extension spring 16 contracts to be located in the groove 15, so that the box body 1 is sealed, and the purpose of stifling and extinguishing fire is achieved.

In order to prevent the sealing plate 14 from being affected by gravity and not being able to completely seal the heat dissipation hole 4, a guide rod 18 is fixedly connected to the inner wall of the groove 15 along the axial direction of the extension spring 16, and the guide rod 18 penetrates through the sealing plate 14 and is slidably connected with the sealing plate 14. The guide rod 18 plays a role of supporting and guiding, and when the pulling rope 17 is cut off, the extension spring 16 contracts to drive the sealing plate 14 to move along the axial direction of the guide rod 18.

The vertical section of the end of the insulating insert 9 facing the left contact 10 is V-shaped, so that the insulating insert 9 is more easily inserted between the left contact 10 and the right contact 11, and the pull rope 17 is also more easily cut.

In order to achieve the purpose of extinguishing fire as soon as possible, an air bag 19 is arranged in the box body 1 below the left contact 10 and the right contact 11, compressed non-combustible gas is filled in the air bag 19, and dry powder extinguishing agent is filled in the air bag 19. When the insulating insertion sheet 9 moves to the lower part of the left contact 10, the air bag 19 can be punctured, the box body 1 is quickly filled with the incombustible gas compressed in the air bag 19, the auxiliary fire extinguishing effect can be achieved, the dry powder extinguishing agent is sprayed out to cover the surface of a fire source, and the incombustible gas is matched to quickly extinguish fire.

The wireless infrared sensor 20 is arranged below the left contact 10 and the right contact 11 in the box body 1, the transmitting end 201 and the receiving end 202 of the wireless infrared sensor 20 are positioned on two sides of the motion path of the insulating insertion sheet 9, the wireless infrared sensor 20 is in wireless connection with a controller 21 positioned outside the box body 1, the controller 21 adopts a PLC (programmable logic controller) 21, and the controller 21 is electrically connected with an alarm 22. The alarm 22 may be an acoustic alarm 22, an optical alarm 22, a vibration alarm 22 or other types of alarms 22, which may be specifically selected according to actual needs, and the present application is not limited thereto. After the insulating insertion sheet 9 moves to a position between the transmitting end 201 and the receiving end 202 of the wireless infrared sensor 20, the wireless infrared sensor 20 transmits a signal to the controller 21, and the controller 21 controls the alarm 22 to give an alarm, so that people are reminded of timely processing, and loss is further reduced.

The working process and the beneficial effects of the invention are as follows:

when a fire accident occurs in the distribution box, the box body 1 rapidly transfers heat to the soft magnet 5, when the soft magnet 5 is heated to the temperature of self demagnetization, magnetism is temporarily weakened or disappears, the elasticity of the compression spring 7 is greater than the attraction of the soft magnet 5 and the permanent magnet 6, the compression spring 7 extends to drive the permanent magnet 6 to move downwards along the guide post 13 to cut off the pull rope 17, the extension spring 16 contracts to drive the two sealing plates 14 to seal the heat dissipation holes 4, and the extension spring 16 contracts to be located in the groove 15, so that the box body 1 is sealed, and the purpose of suffocation and fire extinguishment is achieved.

The permanent magnet 6 continues to drive the insulating insertion piece 9 to move downwards and is inserted between the left contact 10 and the right contact 11, so that the power of the electric wire in the distribution box is cut off, and the risk that open fire spreads along the electric wire is reduced. The insulating insertion sheet 9 continues to move downwards to puncture the air bag 19, the box body 1 is quickly filled with the incombustible gas compressed in the air bag 19, and the dry powder extinguishing agent is sprayed out to cover the surface of a fire source and can quickly extinguish fire by matching with the incombustible gas.

The insulating insertion sheet 9 continues to move to a position between the transmitting end 201 and the receiving end 202 of the wireless infrared sensor 20, the wireless infrared sensor 20 transmits signals to the controller 21, and the controller 21 controls the alarm 22 to give an alarm, so that people are reminded of timely processing, and loss is further reduced.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (4)

1. A distribution box comprises a box body (1), a box door (2) and an electric appliance fixing plate (3) which is arranged in the box body (1) and is provided with an electric appliance element, wherein the box body (1) is provided with a plurality of heat dissipation holes (4), the distribution box is characterized in that the inner wall of a top plate of the box body (1) is fixedly connected with a soft magnet (5), one side of the soft magnet (5) far away from the top plate of the box body (1) is attracted with a permanent magnet (6), a compression spring (7) in a compression state is connected between the soft magnet (5) and the permanent magnet (6), one side of the permanent magnet (6) far away from the soft magnet (5) is provided with an insulating layer (8), the insulating layer (8) is provided with an insulating insertion sheet (9) vertical to the insulating layer, and a left contact (10) and a right contact (11) which are respectively, the left contact (10) and the right contact (11) are elastically abutted and are symmetrically arranged by taking the insulating insertion sheet (9) as a symmetrical plane; the radiating holes (4) are symmetrically distributed on two opposite side walls of the box body (1), two sealing plates (14) corresponding to the radiating holes (4) are arranged in the box body (1), grooves (15) are formed in the inner side wall of the box body (1) and located around the radiating holes (4), extension springs (16) in a stretching state are connected between the two sealing plates (14) and the grooves (15), a pull rope (17) is connected between the two sealing plates (14), and the pull rope (17) is located between the insulating insertion sheet (9) and the left contact (10); an air bag (19) is arranged below the left contact (10) and the right contact (11) in the box body (1), compressed non-combustible gas is filled in the air bag (19), and dry powder extinguishing agent is also filled in the air bag (19); the utility model discloses a box, including box (1), transmission end (201) and receiving terminal (202), the below that lies in left contact (10) and right contact (11) in box (1) is provided with wireless infrared ray sensor (20), the both sides that transmission end (201) and receiving terminal (202) of wireless infrared ray sensor (20) are located insulating inserted sheet (9) motion path, wireless infrared ray sensor (20) wireless connection has controller (21) that is located the box (1) outer, controller (21) electricity is connected with alarm (22).

2. A distribution box according to claim 1, wherein the opposing faces of said soft magnet (5) and said permanent magnet (6) are provided with bosses (12), said compression spring (7) is located around said bosses (12), said soft magnet (5) is provided with guide posts (13) facing said permanent magnet (6), said guide posts (13) penetrate said permanent magnet (6) and are slidably connected to said permanent magnet (6).

3. An electric distribution box according to claim 1, characterized in that the inner wall of said recess (15) is provided with a guide rod (18) along the axial direction of the tension spring (16), said guide rod (18) extending through the sealing plate (14) and being slidably connected to the sealing plate (14).

4. An electric distribution box according to claim 1, characterized in that the vertical cross-section of the end of the insulating insert (9) facing the left contact (10) is V-shaped.

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