CN114498337A

CN114498337A - Fireproof low-voltage switch cabinet with pressure relief alarm structure

Info

Publication number: CN114498337A
Application number: CN202210239902.5A
Authority: CN
Inventors: 杨昌艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-12
Filing date: 2022-03-12
Publication date: 2022-05-13

Abstract

The invention discloses a fireproof low-voltage switch cabinet with a pressure relief alarm structure, which comprises a cabinet body horizontally placed above the ground, wherein a cabinet door is hinged to the outer side of the cabinet body, a partition plate is fixedly installed on the inner side of the cabinet body, and an air chamber and a storage chamber are partitioned between the partition plate and the cabinet body; further comprising: the first through hole is formed in the lower surface of the partition plate, the first through hole is communicated with the cabinet body and the storage chamber, and a hidden groove is formed in the partition plate; the guide pillar is fixedly installed on the inner wall of the top of the storage chamber, and a guide groove is formed in the outer wall of the guide pillar. This fire prevention type low-voltage switchgear with pressure release alarm structure can carry out automatic pressure release to inside high-pressure gas when the condition of a fire takes place, and can realize autoalarm at the pressure release in-process, utilizes the high-pressure gas that the pressure release produced to blow the dry powder fire extinguishing agent who spreads simultaneously to improve its cover fire extinguishing effect, effectively improved the safety in utilization of device.

Description

Fireproof low-voltage switch cabinet with pressure relief alarm structure

Technical Field

The invention relates to the technical field of low-voltage switch cabinets, in particular to a fireproof low-voltage switch cabinet with a pressure relief alarm structure.

Background

The low-voltage power distribution cabinet is a final-stage device of a power distribution system, can realize protection, monitoring and control on loads of different power devices, and is widely applied to power control systems of various industries, but the existing power distribution cabinet has some defects.

If the publication number is, but it is inconvenient to carry out automatic timely warning in the use to make the staff can't carry out rapid processing to the condition of a fire, and its in the use, it is inconvenient to carry out automatic putting out to inside condition of a fire, makes the condition of a fire take place to spread easily and increase economic loss, has certain use defect.

We have therefore proposed a fire-resistant low-voltage switchgear cabinet with a pressure-relief alarm structure, in order to solve the problems set out above.

Disclosure of Invention

The invention aims to provide a fireproof low-voltage switch cabinet with a pressure relief alarm structure, and aims to solve the problems that the conventional low-voltage switch cabinet in the market cannot automatically and timely alarm, so that workers cannot rapidly deal with fire, and the fire is inconvenient to automatically extinguish the internal fire in the using process, so that the fire is easy to spread and economic loss is increased.

In order to achieve the purpose, the invention provides the following technical scheme: a fireproof low-voltage switch cabinet with a pressure relief alarm structure comprises a cabinet body horizontally placed above the ground, wherein a cabinet door is hinged to the outer side of the cabinet body, a partition plate is fixedly mounted on the inner side of the cabinet body, and an air chamber and a storage chamber are separated between the partition plate and the cabinet body;

further comprising:

the pressure relief hole is formed in the upper surface of the partition plate and is communicated with the cabinet body and the air chamber, a sealing plug is arranged on the inner side of the pressure relief hole, a guide rod penetrates through the edge of the upper end of the sealing plug, and an alarm button is fixedly mounted at the upper end of the guide rod;

the first through hole is formed in the lower surface of the partition plate, the first through hole is communicated with the cabinet body and the storage chamber, and a hidden groove is formed in the partition plate;

the shaft lever is axially connected above the partition board, and the upper end of the shaft lever is fixedly connected with a movable plate;

the storage chamber is arranged in the storage chamber, the lower end face of the storage chamber is provided with a discharge hole, the middle position of the inner side of the storage chamber is connected with a movable sleeve through a shaft, a driving lever is fixedly arranged on the outer side of the movable sleeve, and a first magnetic block is fixedly arranged on the outer side of the storage chamber;

the guide post is fixedly arranged on the inner wall of the top of the storage chamber, and the outer wall of the guide post is provided with a guide groove;

the sliding chute is formed in the side wall of the air chamber, the inner side of the sliding chute is movably connected with a second magnetic block, and the outer side of the second magnetic block is fixedly connected with a plugging plate;

the guide pipe is connected between the air chamber and the cabinet body, and the lower end of the guide pipe is connected with a spray head.

Preferably, the number of the guide rods is two and is symmetrical about the sealing plug, a first spring is connected between the sealing plug and an alarm button connected to the upper end of the guide rod, the sealing plug is arranged in an inverted round platform-shaped structure, and the sealing plug is in concave-convex fit with the pressure relief hole.

Through adopting above-mentioned technical scheme for when the internal portion of cabinet leads to inside atmospheric pressure to rise because of the condition of a fire reason, the sealing plug can carry out elastic sliding under the pressure effect, thereby make the pressure release hole automatic open, and then be convenient for carry out the pressure release to the internal portion of cabinet, the sealing plug removes the pressure release in-process simultaneously and can extrude alarm button, thereby realizes automatic alarm and handles.

Preferably, the cabinet body and cabinet door binding face department embedding install the fire prevention gasbag, the inboard of camera obscura is provided with the elasticity gasbag, just be connected with the air duct between elasticity gasbag and the fire prevention gasbag.

Through adopting above-mentioned technical scheme for when the internal portion of cabinet produced the condition of a fire, the inside gas of fire prevention gasbag can receive the thermal energy, thereby makes during partial gas passes through the air duct and gets into elastic airbag, and then makes elastic airbag take place the deformation of inflation in step.

Preferably, a positioning block is arranged on the outer side of the shaft rod, the positioning block and the blind groove form a sliding structure, and an elastic air bag is connected between the inner wall of the blind groove and the outer wall of the positioning block.

Through adopting above-mentioned technical scheme for when the deformation takes place to expand for elastic airbag, can promote the locating piece and slide along the camera obscura, and then make the locating piece drive the fly leaf and carry out the rotation of certain angle.

Preferably, the inside of the movable plate is provided with second through holes at equal angles with respect to the circumferential direction of the central axis, the first through hole and the second through hole are correspondingly arranged, the second through hole vertically corresponds to the discharge hole, and the movable plate is attached to the upper surface of the partition plate.

Through adopting above-mentioned technical scheme for the rotatory in-process of fly leaf can be adjusted first through-hole and second through-hole relative position between the two, thereby makes the dry powder extinguishing agent who holds in the bucket can pass through relief hole, second through-hole and first through-hole whereabouts, thereby realizes subsequent effect of putting out a fire, and the internal portion of cabinet's surplus gas can get into the locker room simultaneously, realizes that the internal portion of cabinet's air pressure subducts.

Preferably, the upper end outer wall that holds the bucket laminates in the inner wall in locker room, just hold and be connected with the second spring between bucket and the locker room, and the inboard that holds the bucket has deposited the dry powder fire extinguishing agent.

Through adopting above-mentioned technical scheme for when holding the inside dry powder extinguishing agent whereabouts of bucket, alleviate between its gravity meeting, thereby make and hold the bucket and can slide gradually along the inner wall in locker room under the elastic force effect of second spring.

Preferably, the ball is installed in the inner wall embedding of movable sleeve, just ball and guide slot constitute sliding construction, simultaneously the guide slot is the heliciform structure setting, moreover the outside symmetry of movable sleeve is provided with two and holds the driving lever of bucket inner wall laminating.

Through adopting above-mentioned technical scheme for hold the bucket and shift up the in-process, can make the ball slide along the guide slot, thereby make and drive the movable sleeve and rotate, and then make the driving lever in the movable sleeve outside can loosen the dry powder extinguishing agent who holds bucket inside at rotatory in-process, be convenient for it drops.

Preferably, the first magnetic block and the second magnetic block are arranged in a corresponding position, the magnetic poles of the first magnetic block and the second magnetic block are opposite, and the blocking plate connected to the outer side of the second magnetic block is attached to the upper end of the conduit.

By adopting the technical scheme, in the moving process of the containing barrel, the first magnetic block on the outer side can adsorb the second magnetic block, so that the second magnetic block is driven to move synchronously, and the plugging plate on the outer side of the second magnetic block can be used for removing plugging of the conduit.

Preferably, the number of the guide pipes is two and is symmetrical about the cabinet body, and the opening of the spray head connected with the lower end of the guide pipe is arranged upwards.

Through adopting above-mentioned technical scheme for the high-pressure gas of the inside storage of air chamber can be carried to the shower nozzle through the pipe after the shutoff board removes, and upwards spout through the shower nozzle, thereby realizes blowing of the dry powder extinguishing agent that drops, thereby has improved the fire-retardant scope of dry powder extinguishing agent, has limitedly improved low-voltage switchgear's fire behavior.

Compared with the prior art, the invention has the beneficial effects that: the fireproof low-voltage switch cabinet with the pressure relief alarm structure can automatically relieve the pressure of high-pressure gas in the interior when a fire occurs, can realize automatic alarm in the pressure relief process, and simultaneously utilizes the high-pressure gas generated by pressure relief to blow the spread dry powder extinguishing agent, so that the covering fire extinguishing effect is improved, the use safety of the device is effectively improved, and the specific content is as follows;

1. the cabinet is provided with the pressure relief hole and the sealing plug, when a fire occurs in the cabinet body, the internal air pressure can be gradually increased, at the moment, the sealing plug can be elastically lifted and lowered under the action of the air pressure, so that the pressure relief hole is opened, high-pressure air enters the air chamber through the pressure relief hole, the pressure relief operation is realized, and meanwhile, the sealing plug can be abutted and pressed by the alarm button in the moving process, so that a fire alarm is given out, and a worker can catch up at the first time;

2. the fire-extinguishing dry powder fire extinguishing agent storage barrel is provided with a fire-extinguishing air bag, an elastic air bag and a movable plate, and heat generated by fire can heat gas in the fire-extinguishing air bag, so that the gas in the fire-extinguishing air bag enters the elastic air bag, the elastic air bag expands and pushes a positioning block to slide along a blind groove, the movable plate is adjusted in rotation, the position relation between a first through hole and a second through hole is changed, and the dry powder fire extinguishing agent in the storage barrel can be automatically put in through a discharge hole, so that automatic fire extinguishing is realized;

3. be provided with movable sleeve and pipe, along with the reduction that holds the inside powder of bucket, the gravity that holds the bucket changes, make and hold the bucket and rise under the spring action of second spring, thereby make the movable sleeve drive the driving lever and rotate, make the driving lever can stir the powder, the whereabouts of the follow-up powder of being convenient for, shutoff board can be opened automatically simultaneously, make the high-pressure gas in the air chamber blow to the cabinet body through pipe and shower nozzle, thereby make the dry powder fire extinguishing agent raise once more, and then effectively improved the fire extinguishing effect of device.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the installation structure of the holding tank of the present invention;

FIG. 3 is a schematic cross-sectional view of the containment drum of the present invention;

FIG. 4 is a schematic perspective view of a part of the bucket of the present invention;

fig. 5 is a schematic view of a sealing plug mounting structure of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 3 according to the present invention;

FIG. 7 is a schematic view of the connection structure of the plugging plate and the conduit according to the present invention;

fig. 8 is a schematic view of the positioning block mounting structure of the present invention.

In the figure: 1. a cabinet body; 2. a cabinet door; 3. a partition plate; 4. an air chamber; 5. a storage chamber; 6. a pressure relief vent; 7. a sealing plug; 8. a guide bar; 9. an alarm button; 10. a first spring; 11. a fire-proof air bag; 12. a first through hole; 13. a hidden groove; 14. a shaft lever; 15. positioning blocks; 16. an elastic air bag; 17. an air duct; 18. a movable plate; 19. a second through hole; 20. a containing barrel; 21. a discharge hole; 22. a second spring; 23. a movable sleeve; 24. a ball bearing; 25. a guide post; 26. a guide groove; 27. a deflector rod; 28. a first magnetic block; 29. a chute; 30. a second magnetic block; 31. a plugging plate; 32. a conduit; 33. and (4) a spray head.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: a fireproof low-voltage switch cabinet with a pressure relief alarm structure comprises a cabinet body 1 horizontally placed above the ground, a cabinet door 2 is hinged to the outer side of the cabinet body 1, a partition plate 3 is fixedly installed on the inner side of the cabinet body 1, and an air chamber 4 and a storage chamber 5 are separated between the partition plate 3 and the cabinet body 1;

further comprising: the pressure relief hole 6 is formed in the upper surface of the partition plate 3, the pressure relief hole 6 is communicated with the cabinet body 1 and the air chamber 4, a sealing plug 7 is arranged on the inner side of the pressure relief hole 6, a guide rod 8 penetrates through the edge of the upper end of the sealing plug 7, and an alarm button 9 is fixedly mounted at the upper end of the guide rod 8; the first through hole 12 is formed in the lower surface of the partition plate 3, the first through hole 12 is communicated with the cabinet body 1 and the storage chamber 5, and a hidden groove 13 is formed in the partition plate 3; a shaft lever 14 which is axially connected above the partition board 3, and the upper end of the shaft lever 14 is fixedly connected with a movable plate 18; the storage barrel 20 is movably arranged on the inner side of the storage chamber 5, a discharge hole 21 is formed in the lower end face of the storage barrel 20, a movable sleeve 23 is connected to the middle position of the inner side of the storage barrel 20 in a shaft mode, a shift lever 27 is fixedly arranged on the outer side of the movable sleeve 23, and a first magnetic block 28 is fixedly arranged on the outer side of the storage barrel 20; the guide post 25 is fixedly arranged on the inner wall of the top of the storage chamber 5, and the outer wall of the guide post 25 is provided with a guide groove 26; the sliding groove 29 is formed in the side wall of the air chamber 4, the inner side of the sliding groove 29 is movably connected with a second magnetic block 30, and the outer side of the second magnetic block 30 is fixedly connected with a blocking plate 31; a duct 32 connected between the air chamber 4 and the cabinet 1, and a nozzle 33 connected to a lower end of the duct 32.

Guide arm 8 is provided with two about sealing plug 7 symmetry, and be connected with first spring 10 between the alarm button 9 that sealing

plug

7 and 8 upper ends of guide arm are connected, and sealing plug 7 is the setting of inversion round platform shape structure, sealing plug 7 and the unsmooth cooperation of pressure release hole 6 simultaneously, as shown in fig. 1-2 and fig. 5, when the condition of a fire takes place for 1 inside of the cabinet body, its inside atmospheric pressure can rise rapidly, sealing plug 7 can carry out the elasticity lift under atmospheric pressure effect this moment, 6 automatic openings in pressure release hole this moment, make the inside high-pressure gas of the cabinet body 1 pass through pressure release hole 6 and get into air chamber 4, thereby realize the pressure release to the

cabinet body

1, 7 removal in-process of while can extrude alarm button 9, make alarm button 9 control alarm device of alarm button send alarm information, do benefit to the staff and arrive in the very first time.

The fireproof airbag 11 is embedded in the joint face of the cabinet body 1 and the cabinet door 2, the elastic airbag 16 is arranged on the inner side of the hidden groove 13, and the air duct 17 is connected between the elastic airbag 16 and the fireproof airbag 11. A positioning block 15 is arranged on the outer side of the shaft rod 14, the positioning block 15 and the hidden groove 13 form a sliding structure, and an elastic air bag 16 is connected between the inner wall of the hidden groove 13 and the outer wall of the positioning block 15. The inside of the movable plate 18 is opened with second through holes 19 at equal angles with respect to the circumferential direction of the central axis, the first through holes 12 and the second through holes 19 are correspondingly arranged, the second through holes 19 vertically correspond to the discharge holes 21, and the movable plate 18 is attached to the upper surface of the partition plate 3. The upper end outer wall that holds bucket 20 fits in the inner wall of locker room 5, and holds and be connected with second spring 22 between bucket 20 and the locker room 5 to the inboard that holds bucket 20 has deposited the dry powder extinguishing agent. The balls 24 are embedded in the inner wall of the movable sleeve 23, the balls 24 and the guide groove 26 form a sliding structure, the guide groove 26 is arranged in a spiral structure, and two shift levers 27 attached to the inner wall of the containing barrel 20 are symmetrically arranged on the outer side of the movable sleeve 23, as shown in fig. 1-4, 6 and 8, when a fire occurs, the gas inside the fire-proof airbag 11 can be rapidly heated, so that the gas inside the fire-proof airbag 11 expands, at the moment, part of the gas can enter the elastic airbag 16 through the gas guide tube 17, so that the elastic airbag 16 expands and deforms, at the moment, the elastic airbag 16 can push the positioning block 15 to slide along the blind groove 13, so that the movable plate 18 rotates, so that the relative positions of the first through hole 12 and the second through hole 19 are adjusted, so that the fire extinguishing agent in the containing barrel 20 falls through the discharge hole 21, the dry powder through hole 19 and the first through hole 12, thereby realize carrying out the automation to the condition of a fire of the cabinet body 1 inside and put out, simultaneously along with holding the reduction of powder in the bucket 20, the gravity that holds bucket 20 this moment reduces, make and hold bucket 20 and shift up under the elastic force effect of second spring 22, ball 24 can slide along guide slot 26 this moment, thereby make the movable sleeve 23 drive driving lever 27 carry out synchronous revolution, driving lever 27 can stir the powder that holds in the bucket 20 this moment, and then improve the fluffy degree of powder, be convenient for its whereabouts smoothly.

The first magnetic block 28 and the second magnetic block 30 are arranged in a corresponding position, the magnetic poles of the first magnetic block 28 and the second magnetic block 30 are opposite, and the blocking plate 31 connected to the outer side of the second magnetic block 30 is attached to the upper end of the conduit 32. The two guide pipes 32 are symmetrically arranged relative to the cabinet body 1, and the openings of the nozzles 33 connected to the lower ends of the guide pipes 32 are arranged upwards, as shown in fig. 1-2 and fig. 7, along with the upward movement of the containing barrel 20, the first magnetic blocks 28 on the outer sides of the guide pipes can drive the second magnetic blocks 30 to move upwards under the action of magnetic force, so that the second magnetic blocks 30 drive the blocking plates 31 to synchronously adjust the positions, the upper ends of the guide pipes 32 are opened, high-pressure gas in the air chambers 4 can be conveyed to the nozzles 33 through the guide pipes 32 and is upwards sprayed out through the nozzles 33, and the falling dry powder extinguishing agent is blown, so that the spraying range of the dry powder extinguishing agent is increased, and the fire prevention and extinguishing performances of the device are effectively improved.

The working principle is as follows: when using this fire prevention type low-voltage switchgear with pressure release alarm structure, firstly, as shown in fig. 1-8, when the internal portion of cabinet takes place the condition of a fire, sealing plug 7 can shift up under the atmospheric pressure effect, trigger alarm button 9 when realizing the pressure release, and then the staff is informed to the very first time, fly leaf 18 flame heat effect simultaneously rotates down, thereby make and hold bucket 20 and evenly spill its inside dry powder extinguishing agent, thereby realize the effect of putting out a fire, shutoff board 31 can remove under the drive that holds bucket 20 simultaneously, make the high-pressure gas in the air chamber 4 pass through pipe 32 and carry to shower nozzle 33, and upwards spout, thereby blow the dry powder extinguishing agent of whereabouts, improve the coverage area and the fire extinguishing effect of dry powder extinguishing agent, thereby accomplish a series of works.

Those not described in detail in this specification are within the skill of the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A fireproof low-voltage switch cabinet with a pressure relief alarm structure comprises a cabinet body (1) horizontally placed above the ground, wherein a cabinet door (2) is hinged to the outer side of the cabinet body (1), a partition plate (3) is fixedly installed on the inner side of the cabinet body (1), and an air chamber (4) and a storage chamber (5) are separated between the partition plate (3) and the cabinet body (1);

it is characterized by also comprising:

the pressure relief hole (6) is formed in the upper surface of the partition plate (3), the pressure relief hole (6) is communicated with the cabinet body (1) and the air chamber (4), a sealing plug (7) is arranged on the inner side of the pressure relief hole (6), a guide rod (8) penetrates through the edge of the upper end of the sealing plug (7), and an alarm button (9) is fixedly mounted at the upper end of the guide rod (8);

the first through hole (12) is formed in the lower surface of the partition plate (3), the first through hole (12) is communicated with the cabinet body (1) and the storage chamber (5), and a hidden groove (13) is formed in the partition plate (3);

the shaft lever (14) is connected above the partition plate (3) in a shaft mode, and a movable plate (18) is fixedly connected to the upper end of the shaft lever (14);

the storage device comprises a storage barrel (20) which is movably arranged on the inner side of a storage chamber (5), a discharge hole (21) is formed in the lower end face of the storage barrel (20), a movable sleeve (23) is connected to the middle position of the inner side of the storage barrel (20) in a shaft mode, a shift lever (27) is fixedly arranged on the outer side of the movable sleeve (23), and a first magnetic block (28) is fixedly arranged on the outer side of the storage barrel (20);

the guide post (25) is fixedly arranged on the inner wall of the top of the storage chamber (5), and a guide groove (26) is formed in the outer wall of the guide post (25);

the sliding groove (29) is formed in the side wall of the air chamber (4), the inner side of the sliding groove (29) is movably connected with a second magnetic block (30), and the outer side of the second magnetic block (30) is fixedly connected with a blocking plate (31);

the guide pipe (32) is connected between the air chamber (4) and the cabinet body (1), and the lower end of the guide pipe (32) is connected with a spray head (33).

2. The fireproof low-voltage switch cabinet with the pressure relief alarm structure according to claim 1, characterized in that: the guide rod (8) is symmetrically provided with two relative to the sealing plug (7), a first spring (10) is connected between the sealing plug (7) and an alarm button (9) connected with the upper end of the guide rod (8), the sealing plug (7) is arranged in an inverted round table-shaped structure, and the sealing plug (7) is matched with the pressure relief hole (6) in a concave-convex mode.

3. The fireproof low-voltage switch cabinet with the pressure relief alarm structure according to claim 1, characterized in that: fireproof air bags (11) are embedded in the binding surfaces of the cabinet body (1) and the cabinet door (2), elastic air bags (16) are arranged on the inner sides of the hidden grooves (13), and air guide pipes (17) are connected between the elastic air bags (16) and the fireproof air bags (11).

4. The fireproof low-voltage switch cabinet with the pressure relief alarm structure as claimed in claim 3, wherein: a positioning block (15) is arranged on the outer side of the shaft rod (14), the positioning block (15) and the blind groove (13) form a sliding structure, and an elastic air bag (16) is connected between the inner wall of the blind groove (13) and the outer wall of the positioning block (15).

5. The fireproof low-voltage switch cabinet with the pressure relief alarm structure according to claim 1, characterized in that: second through holes (19) are formed in the movable plate (18) at equal angles in the circumferential direction of the central axis, the first through holes (12) and the second through holes (19) are correspondingly arranged, the second through holes (19) vertically correspond to the discharge holes (21), and the movable plate (18) is attached to the upper surface of the partition plate (3).

6. The fireproof low-voltage switch cabinet with the pressure relief alarm structure according to claim 1, characterized in that: the upper end outer wall that holds bucket (20) laminates in the inner wall of locker room (5), just it is connected with second spring (22) to hold between bucket (20) and locker room (5), and the inboard that holds bucket (20) is deposited dry powder fire extinguishing agent.

7. The fireproof low-voltage switch cabinet with the pressure relief alarm structure according to claim 1, characterized in that: ball (24) are installed in the inner wall embedding of movable sleeve (23), just ball (24) and guide slot (26) constitute sliding construction, simultaneously guide slot (26) are the heliciform structure setting, moreover the outside symmetry of movable sleeve (23) is provided with two driving levers (27) with hold bucket (20) inner wall laminating.

8. The fireproof low-voltage switch cabinet with the pressure relief alarm structure according to claim 1, characterized in that: the first magnetic block (28) and the second magnetic block (30) are arranged in a corresponding mode, the magnetic poles of the first magnetic block (28) and the second magnetic block (30) are opposite, and a blocking plate (31) connected to the outer side of the second magnetic block (30) is attached to the upper end of a guide pipe (32).

9. The fireproof low-voltage switch cabinet with the pressure relief alarm structure according to claim 1, characterized in that: the two guide pipes (32) are symmetrically arranged relative to the cabinet body (1), and the opening of a spray head (33) connected with the lower end of each guide pipe (32) faces upwards.