CN215995367U - Automatic fire extinguishing device - Google Patents

Abstract

The utility model discloses an automatic fire extinguishing device which is used for extinguishing fire in a cabinet body and comprises a storage bottle filled with fire extinguishing medium and a fire detection pipe accommodated in the cabinet body, wherein a fixing mechanism used for fixing the fire detection pipe is arranged in the cabinet body, a bottle head valve is arranged at the bottle head of the storage bottle, a three-way valve is arranged between the bottle head valve and the end part of the fire detection pipe, and a pressure monitoring mechanism and an alarm mechanism are arranged at the interface of the three-way valve. According to the automatic fire extinguishing device, the fire detection pipes are arranged in the cabinet body, are fixed in the cabinet body by the fixing mechanism and are arranged in order, and are timely exploded to spray fire extinguishing medium to automatically extinguish fire when the fire is on fire, so that the fire is effectively prevented from spreading; the pressure monitoring mechanism and the alarm mechanism that connect behind the three-way valve can the intraductal pressure of real-time supervision fire detection, and alarm mechanism can send out the police dispatch newspaper when pressure is unusual, collects to report to the police and puts out a fire in an organic whole, is favorable to this kind of microenvironment equipment of switch board to carry out the early detection of conflagration and put out a fire.

Description

Automatic fire extinguishing device

Technical Field

The utility model belongs to the technical field of fire extinguishing equipment, and particularly relates to an automatic fire extinguishing device suitable for a cabinet body.

Background

Fire is one of the most serious threats faced by nuclear power plants. Once a fire disaster occurs in a nuclear power plant, a nuclear safety related system accident can be caused, the economic loss is large, the social influence is large, the consequences are extremely serious, and the fire disaster safety becomes an important problem of the nuclear power plant safety. The safety of nuclear power fire hazards is always the focus of attention of nuclear power operators, the public and related institutions, and is also a key factor for the vigorous development of nuclear power. As one of main equipment of a nuclear power station power transformation and distribution system, a power distribution cabinet mainly plays a role in distributing and controlling electric energy. A plurality of areas in the nuclear power station are provided with distribution rooms such as an electric factory building and a main factory building of a steam turbine, and are provided with a large number of high-voltage and medium-low-voltage power distribution cabinets, the distribution rooms serve as the components of the whole power transformation and distribution system and play an important role, the fire protection of the distribution rooms directly influences whether the distribution rooms can be safely operated, and the fire protection system can be normally put into operation or not for emergency events, so that the purposes of suppressing and extinguishing initial fire are very important.

At present, distribution rooms in important areas in large-scale nuclear power plants are all provided with a full-submerged gas fire extinguishing system, but corresponding means and measures are not available for early detection and extinguishment of fire of micro-environment equipment such as a distribution cabinet, and the safety performance of the distribution cabinet cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to overcome the defects of the prior art, the utility model aims to provide an automatic fire extinguishing device, which is used for solving the problems that the early fire in a power distribution cabinet cannot be detected, so that the fire cannot be extinguished in time, further spreading and expanding of the fire is caused, and further major safety accidents occur.

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

an automatic fire extinguishing device for extinguishing fire at an ignition point in a cabinet body comprises a storage bottle and a fire detection pipe accommodated in the cabinet body, the storage bottle is internally stored with fire extinguishing medium, the fire detecting pipe is internally stored with pressure medium, the cabinet body is internally provided with a fixing mechanism for fixing the fire detecting pipe, a through hole is arranged on the inner wall of the cabinet body, the fire detection pipe penetrates through the through hole, a bottle head valve is arranged at the bottle mouth of the storage bottle, one end of the fire detection pipe penetrates through the through hole, a three-way valve is arranged between the bottle head valve and the end part of the fire detection pipe, one interface of the three-way valve is provided with a pressure monitoring mechanism and an alarm mechanism, the pressure monitoring mechanism is used for monitoring the pressure change in the fire detecting pipe, the pressure monitoring mechanism is located between the three-way valve and the alarm mechanism, and the pressure monitoring mechanism and the alarm mechanism are located outside the cabinet body.

The fire detection pipe is arranged in the cabinet body, the fire detection pipe is fixed with the inner wall of the cabinet body by the fixing mechanism, so that the fire detection pipe is not stacked in the cabinet body in a mess manner, the head end of the fire detection pipe is led out of the cabinet body and is connected with the pressure monitoring mechanism and the alarm mechanism through the three-way valve, and under normal conditions, when a worker routinely checks the pressure condition of the fire detection pipe in the cabinet body, the worker does not need to frequently open the cabinet door of the cabinet body to check the pressure indication number; because the one end of firearms pipe is followed the cabinet body and is drawn out, directly be connected with pressure monitoring mechanism, the staff of being convenient for reads the pressure registration. When a fire occurs at a certain position in the cabinet body, the fire detection pipe close to the fire source is softened and exploded, pressure drop is generated in the fire detection pipe, the bottle head valve is opened, the fire extinguishing medium is sprayed from the explosion position to extinguish the fire, and the effect of effectively controlling the fire is achieved. In addition, because the fire detection pipe explodes, the pressure in the fire detection pipe can change greatly, and the pressure monitoring mechanism triggers the alarm mechanism after detecting the pressure change, so that the alarm mechanism gives an alarm and timely informs related workers to process the fire in the cabinet body. This automatic fire extinguishing device collects and reports to the police and puts out a fire in an organic whole, can effectively guarantee the fire control safety of this kind of microenvironment equipment of switch board.

According to some preferred embodiments of the present invention, a pressure gauge is disposed at the first interface of the bottle head valve, the second interface of the bottle head valve is connected to the three-way valve, the first interface of the three-way valve is connected to the second interface of the bottle head valve, one end of the fire-detecting pipe penetrates through the through hole and is connected to the second interface of the three-way valve, and the third interface of the three-way valve is connected to the pressure monitoring mechanism. Through setting up bottle head valve and three-way valve, be connected fire detection pipe and pressure monitoring mechanism and alarm mechanism in the cabinet body outside, be convenient for on the one hand carry out daily control to the intraductal pressure of fire detection, on the other hand can in time send out the police dispatch newspaper when taking place the conflagration, strives for the minutes to implement the measure of fighting a fire. The pressure monitoring mechanism is internally provided with a normal pressure range (0.8-1.6 Mpa) of the fire detection pipe, and further comprises a pressure sensor for detecting the pressure in the fire detection pipe, a display unit for displaying data collected by the pressure sensor, an analysis unit for comparing and analyzing the collected data with a normal pressure value, and a control unit for controlling the pressure monitoring mechanism to transmit signals to the alarm mechanism. When the data collected by the pressure sensor is not in the range of 0.8-1.6 Mpa, namely the data is abnormal, the pressure monitoring mechanism sends a signal to the alarm mechanism to make the alarm mechanism give an alarm; the pressure in the fire detection pipe can be mastered in real time through the pressure readings displayed by the pressure monitoring mechanism, and when a worker finds that the pressure data displayed on the display unit is abnormal, the pressure medium can be timely detected by the fire detection pipe and refilled.

According to some preferred implementation aspects of the present invention, the fixing mechanism comprises a fixing clip, the fixing clip comprises a first clamping piece and a second clamping piece which are symmetrically arranged, one end of the first clamping piece is connected with one end of the second clamping piece, and the other ends of the first clamping piece and the second clamping piece are symmetrically provided with fixing plates. In some embodiments of the utility model, one end of the first clamping piece and one end of the second clamping piece are hinged, and a hinged shaft is arranged to penetrate through the two ends, so that the first clamping piece and the second clamping piece can be opened or combined around the hinged shaft, the opening or closing of the fixing clamp is realized, and the fire detector tube is conveniently clamped.

According to some preferred embodiments of the present invention, the first clip piece and the second clip piece are both arc-shaped, a fixing groove is formed between the first clip piece and the second clip piece, and the firewire pipe penetrates through the fixing groove; a plurality of bulges are uniformly arranged on the inner walls of the first clamping piece and the second clamping piece at intervals, and the bulges are used for being abutted against the outer wall of the fire detector tube. The arc-shaped first clamping piece and the arc-shaped second clamping piece are combined to form a fixing groove, and the fire detector tube can be fixed by penetrating the fire detector tube through the fixing groove on the fixing frame; first clamping piece and second clamping piece set up to the arc and are favorable to making the shape of the fixed slot that forms and the outer wall of probing pipe match more and coincide for the fixed slot can just surround completely the probing pipe of treating fixed part, when avoiding fixation clamp centre gripping probing pipe, has more gap between the two, is unfavorable for the fixation of fixation clamp to probing pipe. The inner walls of the first clamping piece and the second clamping piece are both provided with bulges, in some embodiments of the utility model, the bulges are made of rubber, when the fire detection pipe passes through the fixing groove of the fixing clamp, the bulges are in contact with the fire detection pipe, so that the friction force between the bulges and the fire detection pipe can be increased, and the fire detection pipe is prevented from moving back and forth in the fixing groove; in addition, the bulge made of the rubber material has the characteristics of softness and good elasticity, and the fire detector tube cannot be damaged even if the bulge is tightly attached to the fire detector tube.

According to some preferred implementation aspects of the utility model, the two fixing plates are provided with a groove on the opposite sides, and a clamping groove is formed between the two grooves. The utility model discloses a cabinet, including the cabinet body, be provided with the fixed block on the inner wall of the cabinet body, the fixed block hold in the centre gripping inslot, the outer wall of fixed block with the fixed plate has been seted up the side laminating of recess. The fixed block sets up on the internal wall of cabinet that is close to the correspondence of the position that the fire detection pipe is treated to fix, and the fixation clamp passes through the centre gripping groove with the fixed block centre gripping, and the rethread bolt is fixed for the fixation clamp can with the internal wall fixed connection of the cabinet body, and then at the fixed position fire detection pipe that corresponds. If the fire-detecting pipes are directly stacked in the cabinet body and are not fixed, the fire-detecting pipes are mutually wound and are generally stacked at the bottom end of the cabinet body, when a fire is caught close to the top end position in the cabinet body, because the fire source is far away from the fire-detecting pipes at the bottom end, the fire-detecting pipes cannot timely blast and spray extinguishing media, and the monitoring and extinguishing of the initial fire are not facilitated.

According to some preferred implementation aspects of the utility model, the fixing mechanism comprises a supporting part, the supporting part is used for supporting the fixing clamp, the supporting part comprises a supporting column and a supporting plate, one end of the supporting column is fixedly connected with one end of the supporting plate, and the other end of the supporting column is fixedly connected with the inner wall of the cabinet body; the support plate is abutted against the second clamping piece. The setting of supporting part can play the supporting role to fixation clamp and fire detection pipe are whole, prevents the articulated tip downward sloping of first clamping piece and second clamping piece and the askew phenomenon that the fire detection pipe droops to the throne that arouses. The supporting plate is abutted against the second clamping piece, so that the clamping force of the fixing clamp is further enhanced, and the fixing clamp is tightly attached to the fire detection pipe.

According to some preferred implementation aspects of the present invention, the protrusions are semi-cylinders, the rectangular surfaces of the protrusions are attached to the inner walls of the corresponding first clip piece and the second clip piece, and the length of each of the protrusions is equal to the width of the corresponding first clip piece and the corresponding second clip piece. The arch is the halfcylinder, and its outer wall is slick and sly curved surface, and when the firewire pipe held in the fixed slot of mount, the shape of bellied outer wall can be better with the outer wall laminating of firewire pipe, is favorable to keeping the stability of firewire pipe in the fixed slot and avoids the firewire pipe to warp.

According to some preferred embodiments of the present invention, the fixing mechanism is provided with a plurality of fire detection pipes, the fire detection pipes are arranged in a multi-section manner in the cabinet body, each section of the fire detection pipe is perpendicular to or parallel to the width direction of the cabinet body, two adjacent sections of the fire detection pipe are perpendicular to each other, and the length of each section of the fire detection pipe parallel to the width direction of the cabinet body is smaller than or equal to the width of the cabinet body. In some embodiments of the present invention, the cabinet body is preferably a power distribution cabinet, the fire detection pipes are arranged in multiple segments in a shape of a Chinese character 'gong' in the power distribution cabinet, specifically, the first segment is located at the top end in the power distribution cabinet and is perpendicular to the second segment, the second segment is perpendicular to the third segment, and so on, and only one segment of fire detection pipe is arranged in the power distribution cabinet in the same width direction, namely, the first section and the third section are arranged in parallel relatively, the third section and the fifth section are arranged in parallel relatively, so that the whole fire detecting pipe is uniformly distributed into a plurality of sections to be arranged in the power distribution cabinet, so that the fire detection pipes are distributed in the power distribution cabinet from the top end to the bottom end in order, and no matter where the ignition part is positioned in the power distribution cabinet, the fire detection pipes can be softened by fire in time to explode and spray extinguishing medium in time to extinguish fire, so that the fire can be controlled in time at the initial stage of fire, and the serious fire caused by the expansion and spread of the fire can be prevented.

According to some preferred implementation aspects of the utility model, one end of the fire detection pipe accommodated in the cabinet body is provided with a plug, and the plug is used for sealing the fire detection pipe; when the fire detection pipe is not damaged, the pressure in the fire detection pipe is the same as the pressure in the storage bottle, and the fire detection pipe is not communicated with the storage bottle. The tail end of the fire detection pipe is arranged in the cabinet body, the fire detection pipe is sealed by the plug to keep the normal pressure in the fire detection pipe, and the head end of the pressure monitoring mechanism is arranged outside the cabinet body, so that a worker can observe and record pressure readings conveniently. In some embodiments of the utility model, the storage cylinder is a steel cylinder, the fire extinguishing medium is heptafluoropropane, and the pressure medium in the fire probe tube is nitrogen. Under normal conditions, the pressure in the steel bottle is the same with the intraductal pressure size of fire detection, and the bottle head valve is in the closed condition, and when the fire leads to the blasting of fire detection pipe somewhere, the intraductal pressure of fire detection can reduce suddenly, is less than the gas pressure in the steel bottle, because the intraductal pressure drop of fire detection for the bottle head valve is opened, and heptafluoropropane in the steel bottle can flow to in the fire detection pipe and spout from the blasting, in time puts out a fire effectively.

Due to the adoption of the technical scheme, compared with the prior art, the utility model has the beneficial effects that: the fire detection pipe is arranged in the cabinet body, the fire detection pipe is fixed with the inner wall of the cabinet body by the fixing mechanism, the head end of the fire detection pipe is led out of the cabinet body and is connected with the pressure monitoring mechanism and the alarm mechanism through the three-way valve, and therefore workers can conveniently check the pressure of the fire detection pipe during daily inspection; when a fire occurs at a certain position in the cabinet body, the fire detection pipe explodes, the pressure drop in the fire detection pipe enables the bottle head valve to be opened, the fire extinguishing medium can be sprayed to a fire point from the explosion position to extinguish the fire, and the effect of effectively controlling the fire is achieved. In addition, the pressure monitoring mechanism can trigger the alarm mechanism after detecting the pressure change, so that an alarm is given out, and the working personnel can find the fire in time and process the fire. This automatic fire extinguishing device collects and reports to the police and puts out a fire in an organic whole, is favorable to this kind of microenvironment equipment of switch board to carry out the early detection of conflagration and put out a fire, can greatly promote the prevention and control level of electric fire, and then improves nuclear power plant fire control safety control level.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front view of an automatic fire extinguishing apparatus according to a preferred embodiment of the present invention;

FIG. 2 is a front view of the securing mechanism in the preferred embodiment of the present invention;

FIG. 3 is a front view of the preferred embodiment of the present invention with the retention clip in an open position;

in the drawings: the device comprises a storage bottle-1, a bottle head valve-11, a three-way valve-12, a pressure gauge-13, a cabinet-2, a fixed block-21, a fire detection pipe-3, a plug-31, a fixing mechanism-4, a fixing clamp-41, a first clamping piece-411, a second clamping piece-412, a fixed plate-413, a fixed groove-414, a bulge-415, a groove-416, a supporting part-42, a support column-421, a supporting plate-422, a pressure monitoring mechanism-5 and an alarm mechanism-6.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not a whole embodiment. 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 to 3, the present invention provides an automatic fire extinguishing apparatus which extinguishes fire when it catches fire inside a cabinet 2. The automatic fire extinguishing device comprises a storage bottle 1, a fire detection pipe 3 contained in a cabinet body 2, a plurality of fixing mechanisms 4 used for arranging the fire detection pipe 3 on the inner wall of the cabinet body 2 in a bow shape, a pressure monitoring mechanism 5 used for monitoring the pressure change condition in the fire detection pipe 3, and an alarm mechanism 6 connected with the pressure monitoring mechanism 5. The storage bottle 1 is filled with fire extinguishing medium, and the inner wall of the cabinet body 2 is provided with a through hole. A bottle head valve 11 is arranged at the bottle mouth of the storage bottle 1, a first interface of the bottle head valve 11 is connected with a pressure gauge 13, a third valve 12 is arranged at a second interface of the bottle head valve 11, the first interface of the third valve 12 is fixedly connected with the second interface of the bottle head valve 11, one end of the fire detection pipe 3 penetrates through a through hole in the cabinet body 2 and is connected with the second interface of the third valve 12, and a third interface of the third valve 12 is connected with the pressure monitoring mechanism 5; the pressure monitoring mechanism 5 and the alarm mechanism 6 are both arranged outside the cabinet body 2. Normally, the cylinder head valve 11 is in a closed state, and the pressure in the storage bottle 1 and the pressure in the fire detection pipe 3 are equal. In the embodiment, the storage bottle 1 is a steel bottle, the cabinet body 2 is a power distribution cabinet, and the fire extinguishing medium in the steel bottle is heptafluoropropane; the pressure medium in the fire-detecting pipe 3 is nitrogen.

Referring to fig. 2 to 3, the fixing mechanism 4 includes a fixing clip 41 and a support portion 42. The fixing clip 41 comprises a first clamping piece 411 and a second clamping piece 412 which are symmetrically arranged, the first clamping piece 411 and the second clamping piece 412 are both arc-shaped, a fixing groove 414 is formed between the first clamping piece 411 and the second clamping piece 412, and the whole fire probe pipe 3 penetrates through the fixing grooves 414 in the plurality of fixing mechanisms 4 and then is fixedly connected with the inner wall of the cabinet body 2; the inner walls of the first clamping piece 411 and the second clamping piece 412 are uniformly provided with a plurality of semi-cylindrical protrusions 415 at intervals, and the rectangular surface of each protrusion 415 is attached to the inner walls of the corresponding first clamping piece 411 and the corresponding second clamping piece 412, so that the arc-shaped surface of each protrusion 415 is abutted to the outer wall of the fire probe pipe 3. In this embodiment, the protrusion 415 is made of rubber, and when contacting with the fire detecting tube 3, it can increase the friction between the two, so as to prevent the fire detecting tube 3 from moving back and forth in the fixing groove 414; and the rubber has flexibility and does not damage the fire-detecting pipe 3. One end of the first clamping piece 411 is hinged to one end of the second clamping piece 412, the other ends of the first clamping piece 411 and the second clamping piece 412 are symmetrically provided with fixing plates 413, one sides of the two fixing plates 413 opposite to each other are provided with grooves 416, and a clamping groove is formed between the two grooves 416. Be provided with fixed block 21 on the inner wall of the cabinet body 2, fixed block 21 holds in the centre gripping inslot to fasten fixed block 21 and fixed plate 413 through the bolt, make fixation clamp 41 can with the inner wall fixed connection of the cabinet body 2, provide the position point for fixed fire detection pipe 3.

The support portion 42 is for supporting the fixing clip 41, and includes a support column 421 and a support plate 422. One end of the support column 421 is fixedly connected with one end of the support plate 422, and the other end of the support column 421 is fixedly connected with the inner wall of the cabinet 2; the support plate 422 abuts the second jaw 412. The support portion 42 is used to support the fixing clip 41 and the entire fire detection pipe 3, and prevent the hinged ends of the first clip piece 411 and the second clip piece 412 from tilting downward, which may cause the fire detection pipe 3 to droop.

In this embodiment, the plurality of fixing mechanisms 4 connect the fire-detecting pipes 3 to the inner wall of the cabinet 2, and uniformly distribute the fire-detecting pipes 3 into a plurality of sections. Referring to fig. 1, the multiple sections of fire-detecting pipes 3 are arranged in a bow shape in the cabinet body 2, the first section of fire-detecting pipe 3 is located at the top end in the cabinet body 2, the second section of fire-detecting pipe 3 is perpendicular to the first section and extends from the tail end of the first section to the bottom of the cabinet body 2, the second section of fire-detecting pipe 3 is perpendicular to the third section and extends from the tail end of the second section to the starting point of the first section, and so on, the end cap 31 is arranged at the tail end of the last section of fire-detecting pipe 3 and is used for sealing the whole fire-detecting pipe 3 and preventing nitrogen in the pipe from leaking. Wherein, the length of each section of the fire detection pipe 3 parallel to the width direction of the cabinet body 2 is less than the width of the cabinet body 2, so as to reserve space for the fixing mechanism 4 and facilitate the installation thereof.

The fire detection pipe 3 adopts the external diameter to be 8mm in this embodiment, and the internal diameter is 4 mm's non-metallic hose that pressurizes, can explode at certain temperature within range, sprays extinguishing medium. The fire-detecting pipe 3 does not have brittle fracture phenomenon at the ambient temperature of-20 ℃, does not have softening and deformation phenomena at the ambient temperature of 55 ℃, and can keep not to act for 2min at the temperature of 140 +/-2 ℃; action takes place within 20s at 167 ± 8 ℃; the working pressure is more than or equal to 1.0 Mpa.

The working process of the automatic fire extinguishing device of the embodiment is as follows: the fire detection pipe 3 sequentially penetrates through the plurality of fixing mechanisms 4 in the cabinet body 2 and is arranged in the cabinet body 2 in order, the top end of the fire detection pipe 3 penetrates through the through hole of the cabinet body 2, and the fire detection pipe 3 with a section of proper length is pulled out to be exposed outside the cabinet body 2. The storage bottle 1 filled with the heptafluoropropane is fixed well, a bottle head valve 11 is installed at the bottle mouth of the storage bottle, a first interface of the bottle head valve 11 is connected with a pressure gauge 13, a three-way valve 12 is installed at a second interface of the bottle head valve 11, the first interface of the three-way valve 12 is connected with the second interface of the bottle head valve 11, the second interface of the three-way valve 12 is connected with the end part of a fire detecting pipe 3 exposed outside the cabinet body 2, and a pressure monitoring mechanism 5 is installed at the third interface of the three-way valve 12. After the pipeline is connected, nitrogen is filled into the fire detection pipe 3 to enable the pressure in the fire detection pipe 3 to be equal to the pressure in the storage bottle 1, and a plug 31 is plugged at the tail end of the fire detection pipe 3 to seal the fire detection pipe 3. When a fire occurs at a certain position in the cabinet body 2, the fire detection pipes 3 are sequentially distributed in the cabinet body 2, the fire detection pipes 3 close to the fire position can be gradually softened until blasting due to firing of fire, so that the pressure in the fire detection pipes 3 is suddenly reduced and is smaller than the gas pressure in the storage bottle 1, the bottle head valve 11 is opened due to pressure drop in the fire detection pipes 3, and the heptafluoropropane in the storage bottle 1 can flow into the fire detection pipes 3 and be sprayed out from the blasting position to extinguish the fire. Meanwhile, because the pressure in the fire detection pipe 3 is reduced, the pressure monitoring mechanism 5 can detect the abnormal change, and then sends a signal to the alarm mechanism 6 to enable the alarm mechanism to send out an alarm to remind a worker that an abnormal condition occurs, the worker receives the alarm and carefully inspects the fire condition in the cabinet body 2 to ensure that the fire is extinguished, and the fire detection pipe 3 is replaced with a new one in time to supplement nitrogen gas, so that the device is continuously in a normal working state.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the utility model, and not to limit the scope of the utility model, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (10)

1. An automatic fire extinguishing device is used for extinguishing fire in a cabinet body and is characterized by comprising a storage bottle and a fire detection pipe accommodated in the cabinet body, the storage bottle is internally stored with fire extinguishing medium, the fire detecting pipe is internally stored with pressure medium, the cabinet body is internally provided with a fixing mechanism for fixing the fire detecting pipe, a through hole is arranged on the inner wall of the cabinet body, the fire detection pipe penetrates through the through hole, a bottle head valve is arranged at the bottle mouth of the storage bottle, one end of the fire detection pipe penetrates through the through hole, a three-way valve is arranged between the bottle head valve and the end part of the fire detection pipe, one interface of the three-way valve is provided with a pressure monitoring mechanism and an alarm mechanism, the pressure monitoring mechanism is used for monitoring the pressure change in the fire detecting pipe, the pressure monitoring mechanism is located between the three-way valve and the alarm mechanism, and the pressure monitoring mechanism and the alarm mechanism are located outside the cabinet body.

2. The automatic fire extinguishing device according to claim 1, wherein a pressure gauge is disposed at a first port of the bottle head valve, a second port of the bottle head valve is connected with the three-way valve, the first port of the three-way valve is connected with the second port of the bottle head valve, one end of the fire detection pipe penetrates through the through hole to be connected with the second port of the three-way valve, and a third port of the three-way valve is connected with the pressure monitoring mechanism.

3. The automatic fire extinguishing apparatus according to claim 1, wherein the fixing mechanism comprises a fixing clip including a first clip piece and a second clip piece which are symmetrically arranged, one end of the first clip piece and one end of the second clip piece are connected, and the other ends of the first clip piece and the second clip piece are symmetrically provided with a fixing plate.

4. The automatic fire extinguishing apparatus according to claim 3, wherein the first and second jaws are each arc-shaped, a fixing groove is formed between the first and second jaws, and the fire probe tube penetrates through the fixing groove; a plurality of bulges are uniformly arranged on the inner walls of the first clamping piece and the second clamping piece at intervals, and the bulges are used for being abutted against the outer wall of the fire detector tube.

5. The automatic fire extinguishing apparatus according to claim 3, wherein the opposite sides of the two fixing plates are each provided with a groove, and a clamping groove is formed between the two grooves.

6. The automatic fire extinguishing device according to claim 5, wherein a fixing block is arranged on the inner wall of the cabinet body, the fixing block is accommodated in the clamping groove, and the outer wall of the fixing block is attached to the side edge of the fixing plate, which is provided with the groove.

7. The automatic fire extinguishing apparatus according to claim 6, wherein the fixing mechanism includes a supporting portion for supporting the fixing clip, the supporting portion includes a pillar and a supporting plate, one end of the pillar is fixedly connected with one end of the supporting plate, and the other end of the pillar is fixedly connected with the inner wall of the cabinet body; the support plate is abutted against the second clamping piece.

8. The automatic fire extinguishing apparatus according to claim 4, wherein the projections are semi-cylindrical, the rectangular faces of the projections are fitted to the inner walls of the corresponding first and second jaws, and the length of the projections is equal to the width of the corresponding first and second jaws.

9. The automatic fire extinguishing device according to claim 1, wherein a plurality of fixing mechanisms are provided, the fire detection pipes are arranged in a multi-section manner in the cabinet body, each section of the fire detection pipe is perpendicular or parallel to the width direction of the cabinet body, two adjacent sections of the fire detection pipes are perpendicular to each other, and the length of each section of the fire detection pipe parallel to the width direction of the cabinet body is smaller than or equal to the width of the cabinet body.

10. The automatic fire extinguishing device according to claim 1, wherein an end of the fire detection pipe accommodated in the cabinet body is provided with a plug for sealing the fire detection pipe; when the fire detection pipe is not damaged, the pressure in the fire detection pipe is the same as the pressure in the storage bottle, and the fire detection pipe is not communicated with the storage bottle.

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