CN217640378U

CN217640378U - Particle analysis processing device and fire detector made of same

Info

Publication number: CN217640378U
Application number: CN202221180386.5U
Authority: CN
Inventors: 胡丙辉; 宋辉; 郑宋奇; 唐庆伟
Original assignee: Hainan Zhongwei Technology Co ltd
Current assignee: Hainan Zhongwei Technology Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-21
Anticipated expiration: 2032-05-17

Abstract

The utility model discloses a particle analysis processing apparatus and fire detector who makes thereof, wherein particle analysis processing apparatus is inside and outside double-chamber structure, including interior chamber and outer cavity, the inner wall of interior chamber is the metal film that the heat conductivity is fabulous, the chamber wall of outer cavity is the semiconductor refrigeration piece, fixed laser generator on the inner wall of interior chamber, photodiode, pressure sensor, laser generator and photodiode are face-to-face to be set up, interior chamber communicates the intake pipe respectively, the outlet duct is equipped with the pressure valve, the intake pipe, the outlet duct sets up along a straight line, and, it is perpendicular with laser generator and photodiode's line to change the straight line. Compared with the prior art, the technical effect of the utility model is that, the utility model discloses enlarge the volume of nanometer particle, make it can be caught, surveyed, make the extremely early warning of conflagration become the reality.

Description

Particle analysis processing device and fire detector made of same

Technical Field

The utility model relates to a particle analysis processing apparatus and fire detector who makes thereof.

Background

For fires, the earlier the detection is the better, for which reason early detection alarm devices are already available.

At present, products belonging to the class of fire alarm and alarm in the market mainly have the protection means of smoke sensing, temperature sensing, light sensing, gas, composite type and the like. The traditional smoke, temperature sensing, light sensing and gas detection can be acquired when the combustion is obvious due to the physical quantities such as dense smoke, temperature, radiation light, gas and the like required by the traditional smoke, temperature sensing, light sensing and gas detection, and the optimal time for treating the fire condition is lost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who solves: a particle analysis processing device applied to the early stage of fire and a fire detector made of the particle analysis processing device are designed.

The technical scheme of the utility model specifically does:

the utility model provides a particle analysis processing apparatus, it is inside and outside double-chamber structure, including interior chamber and outer chamber, the inner wall of interior chamber is the metal film that the heat conductivity is fabulous, the chamber wall of outer chamber is the semiconductor refrigeration piece, fixed laser generator on the inner wall of interior chamber, photodiode, pressure sensor, laser generator and photodiode face-to-face set up, interior chamber communicates the intake pipe respectively, the outlet duct is equipped with the pressure valve, the intake pipe, the outlet duct sets up along a straight line, and, it is perpendicular with laser generator and photodiode's line to change the straight line.

The laser generator is a helium-neon laser.

A fire detector comprises a control unit, wherein the control unit is electrically connected with a constant-current fan, an air suction pump, a particle analysis processing device, an exhaust valve, a power supply unit, a humidity sensor, a display screen, an alarm unit, a fault output unit and a communication unit, and the particle analysis processing device is the particle analysis processing device.

And a filtering unit is arranged between the constant flow fan and the air suction pump.

Compared with the prior art, the technical effect of the utility model is that, the utility model discloses enlarge the volume of nanometer particle, make it can be caught, surveyed, make the extremely early warning of conflagration become the reality.

Drawings

Fig. 1 is a schematic view of a particle analysis processing apparatus.

Fig. 2 is an enlarged schematic view of the fire detector.

Detailed Description

In the very early stage of a fire, when an object (e.g., a wire or cable or an electronic part) is overheated, very small invisible thermally decomposed particles (as small as about 0.002 um) are released from the surface of the object, and the amount of the particles can reach 500,000/cc to 1,000,000/cc in a short time; under normal conditions, the number of invisible particles floating in the air is only about 20,000/cc, and in a high dust falling area, the number of invisible particles is only 25,000/cc to 30,000/cc, and the abnormal proportion of the number of particles under the condition of normal and extremely early fire disaster enables people to use the particles to alarm at the extremely early fire disaster.

However, the particles are too small to be easily trapped.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments thereof.

Referring to fig. 1, a particle analysis processing apparatus, which is an internal and external dual-chamber structure, includes an inner chamber 10 and an outer chamber 11, wherein the inner wall of the inner chamber 10 is a metal film with excellent thermal conductivity, the wall of the outer chamber 11 is a semiconductor refrigeration sheet, a laser generator 23 (such as a he-ne laser), a photodiode 21 and a pressure sensor 22 are fixed on the inner wall of the inner chamber 10, and the laser generator 23 and the photodiode 21 are arranged face to face.

The inner chamber 10 is respectively communicated with an air inlet pipe 15 and an air outlet pipe 16, the air outlet pipe 16 is provided with a pressure valve (not shown in the figure), the air inlet pipe 15 and the air outlet pipe 16 are arranged along a straight line, and the straight line is perpendicular to a connecting line of the laser generator 23 and the photodiode 21.

And the air inlet pipe 15 and the air outlet pipe 16 are used for the inlet and outlet of sample air.

The laser generator 23, the photodiode 21 and the pressure sensor 22 are all electrically connected to a PLC (not shown in FIG. 1).

The working principle is as follows:

sample air is pumped into the inner chamber 10 from the air inlet pipe 15 through the air pump, the inner chamber 10 is pressurized (only when the pressure reaches the critical value of the pressure valve, the air outlet pipe 16 can be communicated), the temperature of the inner chamber is suddenly increased, meanwhile, the outer chamber is refrigerated by using the semiconductor refrigerating sheet, the temperature difference between the inside and the outside of the inner wall of the inner chamber 10 is instantly increased, water vapor (small liquid drops) is formed on the inner film of the chamber, nanoscale particles in the air are wrapped by the water vapor to form water mist with the particles, at the moment, the PLC starts the laser generator 23, the water mist with the nanoparticles shields the laser from being transmitted along a straight line, the laser is scattered, the light intensity of the laser received by the photodiode is changed, the PLC calculates the number of the particles according to the change of the light intensity, the size of the chamber body and the pressure in the chamber, the particle concentration is counted, the working is carried out in a reciprocating way, the particle concentration is read in real time, the data are compared, the abnormal proportion of the particle number can be found, and the early warning of the fire can be realized.

The core of the device lies in that the volume of nano-scale particles is increased, and the device is convenient for later-stage capture and detection.

And setting alarm thresholds of different levels according to the actual detection situation on site, and outputting an alarm when the particle concentration reaches the alarm threshold of a certain level.

Referring to fig. 2, a fire detector includes a control unit 50, wherein the control unit 50 is electrically connected to a constant flow fan 51, an air pump 53, a particle analysis processing device 54 (which is the particle analysis processing device described above), an exhaust valve 55, a power supply unit 56, a humidity sensor 57, a display screen 58, an alarm unit 59, a fault output unit 60, and a communication unit 61.

In order to reduce the influence of impurities, a filter unit 52 is provided between the constant flow fan 51 and the suction pump 53.

The working principle is as follows:

when the sample air is required to be used, the sample air enters the particle analysis processing apparatus 54 from the constant flow fan 51, the filter unit 52, and the suction pump 53, and is discharged from the exhaust valve 55 as soon as possible.

The analysis processing device 54 sends the collected data to the control unit 50, the control unit 50 keeps a normal working state through the power supply unit 56, the fault output unit 60 and the communication unit 61, the particle concentration is displayed on the display screen 58, and when the particle concentration reaches an alarm threshold value of a certain grade, the control unit 50 informs the alarm unit 59 of giving an alarm.

The characteristics of this patent:

1. early warning:

for fire, early detection and early discovery can gain enough time for processing early hidden danger, and the very early air-breathing pyrolysis particle fire detector can detect pyrolysis particles 4-10 hours in advance, has a plurality of alarm levels with different degrees, and sends out different alarm information according to the concentration of the pyrolysis particles.

2. Extremely high sensitivity:

the sensitivity is nearly 2000 times higher than that of the traditional smoke detector by adopting the creative particle analysis processing technology and combining the comparison and trend prejudgment of a plurality of sampling detection data results.

3. Ultra-high accuracy:

the fire condition has no trouble, the accuracy of the early warning is crucial, the accurate early warning needs to identify whether the fire is burnt or not, and non-combustion interference factors are eliminated. The extremely early air suction type pyrolysis particle fire detector is extremely accurate in pyrolysis particle identification, suspended micro particles such as dust and water mist can be accurately identified through laser, and interference information is eliminated. For example, under the conditions of smoking environment, temple incense burning environment, cable high-temperature working environment, automobile exhaust interference environment, warehouse diesel forklift working and high-dust environment interference, narrow space hidden danger position judgment and the like, normal working needs to be protected, and early warning information needs to be accurately sent out.

4. Ultra large protection area

The maximum protection area of a single machine of the extremely early suction type pyrolysis particle fire detector can reach 500 square meters.

5. Flexible sampling mode

The extremely early air-breathing pyrolysis particle fire detector adopts PVC pipe network arrangement, and the advantages of the method are as follows: the installation is extremely simple, has avoided loaded down with trivial details line, installation debugging work. Very early formula pyrolysis particle fire detector sampling pipe network installation form of breathing in is various, can adopt different mode of laying, for example: the sampling device is erected below a ceiling, a floor, a capillary tube for sampling, a cabinet for sampling, an air return port and the like so as to adapt to different environmental requirements. Can be used in the areas which can not be detected by the traditional probe, such as: transformer cabinets, raised floors, cable troughs, freezing chambers, wide and high-rise spaces and the like, and places with flammability, explosiveness and strong electromagnetic radiation interference and the like.

6. The maintenance is simple, the worry and the labor are saved:

the PVC pipeline that only needs regularly to sample does the vapour-pressure type clean, and the inlet port department installs the tee bend valve additional, conveniently sweeps, just can monitor the condition of whole pipe network at the computer end, just can conveniently clean and maintain the pipe network near the detection host computer position on ground. Consumable materials are not added or replaced in the operation process, the maintenance cost is extremely low, and the labor and the worry are saved.

See the prior art for further details.

While the preferred embodiments of the present invention have been described, it should be understood that various changes and modifications may be made therein by those skilled in the art without departing from the general concept of the invention, and it is intended that such changes and modifications be considered as within the scope of the invention.

Claims

1. A particle analysis processing apparatus, which is of an internal and external double-chamber structure, comprises an inner chamber (10) and an outer chamber (11), and is characterized in that: the inner wall of inner chamber (10) is the metal film that the heat conductivity is fabulous, the chamber wall of outer chamber (11) is the semiconductor refrigeration piece, fixed laser generator (23) on the inner wall of inner chamber (10), photodiode (21), pressure sensor (22), laser generator (23) and photodiode (21) face-to-face setting, inner chamber (10) communicate intake pipe (15) respectively, outlet duct (16) are equipped with the pressure valve, intake pipe (15), outlet duct (16) set up along a straight line, and, it is perpendicular with the line of laser generator (23) and photodiode (21) to change the straight line.

2. The particle analysis processing apparatus according to claim 1, wherein: the laser generator (23) is a helium-neon laser.

3. A fire detector comprising a control unit (50), characterized in that: the control unit (50) is electrically connected with the constant-current fan (51), the air suction pump (53), the particle analysis processing device (54), the exhaust valve (55), the power supply unit (56), the humidity sensor (57), the display screen (58), the alarm unit (59), the fault output unit (60) and the communication unit (61), wherein the particle analysis processing device (54) is the particle analysis processing device according to claim 1.

4. A fire detector as claimed in claim 3, characterised in that: a filter unit (52) is arranged between the constant flow fan (51) and the air pump (53).