CN224005538U - Dual-detection fire hazard early warning device - Google Patents
Dual-detection fire hazard early warning deviceInfo
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- CN224005538U CN224005538U CN202520676219.7U CN202520676219U CN224005538U CN 224005538 U CN224005538 U CN 224005538U CN 202520676219 U CN202520676219 U CN 202520676219U CN 224005538 U CN224005538 U CN 224005538U
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Abstract
本实用新型涉及电气设备监测技术领域，具体为一种双重探测的火灾隐患预警装置，包括壳体，所述壳体内一侧通过进气通道连接有烟雾探测组件，所述烟雾探测组件通过软管与风机模组的进气端连通，所述风机模组的出气端连接有出气通道，所述出气通道连通至壳体外；所述壳内还安装有电路主板，所述烟雾探测组件和风机模组均与电路主板电性连接；所述壳体上盖设有内隔板，位于内隔板上方的壳体上扣设有盖板。通过烟雾探测组件和凝结核探测组件的双重探测，能够探测到物质过热阴燃阶段产生的不可见微小粒子及大颗粒烟雾，扩宽监测设备的粒径探测范围，及时在物质过热极早期进行预警，且结果互为对照，提高了设备监测结果的可靠性，具备防误报功能。
This utility model relates to the field of electrical equipment monitoring technology, specifically a dual-detection fire hazard early warning device. It includes a housing, with a smoke detection component connected to one side of the housing via an air inlet channel. The smoke detection component is connected to the air inlet of a fan module via a flexible hose. The air outlet of the fan module is connected to an air outlet channel leading to the outside of the housing. A circuit board is also installed inside the housing, and both the smoke detection component and the fan module are electrically connected to the circuit board. An inner partition is provided on the top cover of the housing, and a cover plate is fastened to the housing above the inner partition. Through the dual detection of the smoke detection component and the condensation nucleus detection component, invisible microparticles and large particulate smoke generated during the smoldering stage of overheated materials can be detected, broadening the particle size detection range of the monitoring equipment. It provides timely early warning at the very early stage of material overheating, and the results are mutually verifiable, improving the reliability of the monitoring results and providing a false alarm prevention function.
Description
Technical Field
The utility model relates to the technical field of overheat hidden danger monitoring, in particular to a double-detection fire hidden danger early warning device.
Background
With the continuous advancement of industrial automation and intelligent processes, the application range of electrical equipment in public infrastructure is continuously expanded, and particularly in key places such as transformer substations, energy storage systems, distribution rooms, data centers and the like, the deployment of large-scale electrical equipment has become an important component of infrastructure construction. The operational status of these devices directly affects the safety and stability of the social infrastructure. The problem of overheat of equipment is the most prominent potential safety hazard, which may cause degradation of equipment performance, system failure and even cause serious safety accidents such as electric fire, thus not only causing huge economic loss, but also endangering public safety.
The fire hazard monitoring is a process for monitoring and analyzing potential fire hazards of various systems or equipment in real time, and mainly comprises temperature monitoring, gas monitoring, particle monitoring and the like. Particle monitoring refers to the detection of tiny solid particles or fumes that may be generated when the system overheats or an overheating event occurs. The particles are usually caused by material combustion, thermal decomposition or other chemical reactions, and can be precursors of fire, particle monitoring plays an important role in fire hidden danger monitoring and early warning, traditional smoke detection can only detect large-particle smoke generated in an open smoke and open flame stage, can not detect tiny particles generated in a smoldering and non-smoke generating stage of substances, has the problems of untimely early warning and delayed response, is easily influenced by interference objects such as dust, water mist and the like in the environment, and has high false alarm rate. Therefore, in order to better secure the safety of the electrical equipment, it is necessary to develop a detection and early warning device that can further detect fine particles in the equipment when the electrical equipment heats and has high reliability.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model aims to provide a double-detection fire hazard warning device, through double detection of a smoke detection component and a condensation nucleus detection component, invisible tiny particles generated in a substance overheat smoldering stage and large particle smoke generated in a clear smoke stage can be detected, the particle size detection range of monitoring equipment is widened, early warning is timely carried out in the extremely early stage of substance overheat, the double detection results of the two components are mutually compared, the reliability of the monitoring result of the equipment is improved, and the device has a false alarm prevention function.
In order to achieve the above object, the present utility model provides the following technical solutions:
The double-detection fire hazard early warning device comprises a shell, wherein one side in the shell is connected with a smoke detection assembly through an air inlet channel, an air outlet end of the smoke detection assembly is communicated with an air inlet end of a fan module, and air outlet of the fan module is communicated to the outside of the shell through the air outlet channel;
A sampling air tap is arranged on an air outlet channel in the shell, the air outlet channel is connected with a condensation nucleus detection assembly through the sampling air tap, and the air outlet end of the condensation nucleus detection assembly is communicated with the air outlet channel; the smoke detection assembly, the condensation nucleus detection assembly and the fan module are all electrically connected with the circuit board.
The smoke detection assembly comprises a smoke detection chamber, a sealing cover body is arranged on the upper cover of the smoke detection chamber, a sampling air flow inlet for entering the smoke detection chamber and a sampling air outlet for discharging the smoke detection chamber are arranged on the sealing cover body, a first light source emitter is fixed in the smoke detection chamber, a first light receiving sensor is also fixed in the smoke detection chamber, and the first light receiving sensor is located in the direction of light rays emitted by the first light source emitter.
Preferably, the condensation nucleus detection assembly comprises a condensation nucleus detection cavity seat arranged in a condensation nucleus detection shell, a condensation nucleus detection cavity cover is arranged on the condensation nucleus detection cavity seat in a sealing buckling mode, a condensation nucleus detection main board is arranged in the condensation nucleus detection shell and located on one side of the condensation nucleus detection cavity seat, and the condensation nucleus detection main board is electrically connected with the circuit main board.
The condensation nucleus detection cavity seat is provided with a humidity adjusting chamber, a negative pressure chamber and a condensation nucleus detection chamber, the condensation nucleus detection chamber is connected with the negative pressure chamber through a second valve, the humidity adjusting chamber is connected with the condensation nucleus detection chamber through a first valve, one side of the condensation nucleus detection cavity seat is provided with a first sampling air passage and a second sampling air passage, the first sampling air passage is connected with the condensation nucleus detection chamber through a third valve, the second sampling air passage is connected with the humidity adjusting chamber through a fourth valve, air inlet ends of the first sampling air passage and the second sampling air passage are connected with a sampling air nozzle, an air pump is arranged on the negative pressure chamber, and an air outlet of the air pump is connected with an air outlet passage through a hose.
Preferably, the condensation nucleus detection chamber is provided with a pressure sensor, one side of the condensation nucleus detection chamber is provided with a second light source emitter, a second light receiving sensor is arranged in the condensation nucleus detection chamber on the opposite side of the second light source emitter, and the second light source emitter, the second light receiving sensor and the pressure sensor are electrically connected with the condensation nucleus detection main board.
Preferably, the fan module comprises a fan module housing, and a centrifugal fan is installed in the fan module housing.
Preferably, the air inlet channel is provided with a filter assembly, the filter assembly comprises a slot arranged on the air inlet channel, a filter plate is inserted in the slot, and the top of the filter plate is in sealing fit with the notch of the slot.
Preferably, a filter tip fixing seat is arranged outside the condensation nucleus detection shell, a filter tip is arranged on the filter tip fixing seat, and the filter tip is respectively arranged on the first sampling gas path and the second sampling gas path which are communicated.
Preferably, a temperature and humidity sensor and a gas sensor are further arranged in the smoke detection cavity, and an extinction chamber is further arranged in the smoke detection cavity and is positioned at one side of the first light receiving sensor, which is far away from the first light source emitter.
Preferably, the inner partition plate is also provided with an indicator lamp and a buzzer, the indicator lamp and the buzzer are electrically connected with the circuit main board, one side of the shell is also provided with a communication antenna, and the communication antenna is electrically connected with the circuit main board.
Compared with the prior art, the utility model has the following beneficial effects:
(1) The smoke detection component detects particles in gas, measures solid characteristic product particles with large particle size of overheat decomposition of materials in air, filters a sample, enters the condensation nucleus detection component, and condenses small particle size particles and water molecules to generate large particle size cloud mist, so that the cloud mist is successfully detected, and according to dual detection data of the smoke and the condensation nucleus, dual-parameter alarm judgment is adopted, the particle size range of particle detection is wide, the detection sensitivity is high, early warning is timely, and the dual detection results of the two components are in contrast, so that the reliability of the monitoring result of equipment is improved, and the false alarm prevention capability of the equipment is improved.
(2) The condensation nucleus detection gas circuit is provided with the filter tip, so that some dust which is easy to cause errors in gas can be removed through the filter tip, the detection accuracy is improved, and the condensation nucleus detection gas circuit has a certain error prevention function.
(3) The pressure sensor arranged in the condensation nucleus detection assembly is used for monitoring negative pressure, so that the necessary negative pressure state that the small-particle-size particles form cloud mist in the condensation nucleus detection assembly is ensured.
Drawings
FIG. 1 is a schematic diagram of the overall explosion structure of a dual detection fire hazard warning device of the present utility model;
FIG. 2 is a schematic diagram of a top view of a dual detection fire hazard warning device in a housing of the present utility model;
FIG. 3 is a schematic top view of a smoke detection assembly of a dual detection fire hazard warning device of the present utility model;
FIG. 4 is a schematic diagram of an explosion structure of a condensation nucleus detection assembly of a dual detection fire hazard warning device of the present utility model;
Fig. 5 is a schematic structural diagram of a filtering assembly of a dual detection fire hazard warning device.
The device comprises 100 parts of a shell, 200 parts of an air inlet channel, 300 parts of a smoke detection component, 400 parts of a fan module, 500 parts of an air outlet channel, 600 parts of a circuit main board, 700 parts of a condensation detection component, 800 parts of an inner partition board, 900 parts of a condensation detection main board, 110 parts of a communication antenna, 210 parts of a filtering component, 211 parts of a slot, 212 parts of a filter board, 310 parts of a smoke detection cavity, 320 parts of a sealing cover body, 330 parts of a first light source emitter, 340 parts of a first light receiving sensor, 350 parts of a temperature and humidity sensor, 360 parts of a gas sensor, 370 parts of an extinction chamber, 321 parts of an air inlet, 322 parts of an air outlet, 410 parts of a fan module shell, 510 parts of a sampling air nozzle, 710 parts of a condensation detection shell, 720 parts of a condensation detection cavity seat, 730 parts of a condensation detection cavity cover, 740 parts of a condensation detection main board, 750 parts of a condensation detection cover body, 760 parts of a sealing gasket, 770 parts of a sealing pressure bar, 780 parts of a filter tip fixing seat, 790 parts of a filter tip, 721 parts of a humidity adjusting chamber, 722 parts of a negative pressure chamber, 728 parts of a first light source emitter, 724 parts of a second valve 725 parts of a first valve, third valve, 729 parts of a fourth valve, 7231 parts of a humidity sensor, 7231 parts of a gas sensor, a second valve, a light emitter, a light source, a display device, and 830 parts of the light sensor.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
As shown in fig. 1-5, the dual-detection fire hazard warning device comprises a housing 100, wherein one side in the housing 100 is connected with a smoke detection assembly 300 through an air inlet channel 200, an air outlet end of the smoke detection assembly 300 is communicated with an air inlet end of a fan module 400, and air outlet of the fan module 400 is communicated to the outside of the housing 100 through an air outlet channel 500, an inner partition 800 is arranged on the upper cover of the housing 100, and a cover plate 900 is buckled on the housing 100 above the inner partition 800;
The gas outlet channel 500 in the shell 100 is provided with a sampling gas nozzle 510, the gas outlet channel 500 is connected with a condensation nucleus detection assembly 700 through the sampling gas nozzle 510, the gas outlet end of the condensation nucleus detection assembly 700 is communicated with the gas outlet channel 500, the shell 100 is internally provided with a circuit main board 600, and the smoke detection assembly 300, the condensation nucleus detection assembly 700 and the fan module 400 are electrically connected with the circuit main board 600.
The circuit board 600 is used for processing the electrical signals of the smoke detection assembly 300 and the condensation nucleus detection assembly 700, converting the data, transmitting the data to the screen of the inner partition 800 for display, and transmitting the data to the outside.
The sampling air tap 510 is located on the air outlet channel 500, and through the arrangement of the sampling air tap 510, gas enters the condensation nucleus detection assembly 700, after the condensation nucleus detection assembly 700 detects, the detected gas of the condensation nucleus detection assembly 700 is conveyed into the air outlet channel 500 and is discharged outside the device.
In this embodiment, the smoke detection assembly 300 includes a smoke detection chamber 310, a sealing cover 320 is provided on the upper cover of the smoke detection chamber 310, an air inlet 321 for sampling air flow into the smoke detection chamber 310 and an air outlet 322 for exhausting air flow out of the smoke detection chamber 310 are provided on the sealing cover 320, a first light source emitter 330 is fixed in the smoke detection chamber 310, a first light receiving sensor 340 is also fixed in the smoke detection chamber 310, and the first light receiving sensor 340 is located in the direction of light emitted by the first light source emitter 330.
When the fan module 400 works, sampling gas is sucked into the smoke detection chamber 310 through the air inlet 321 by the air inlet channel 200, through continuous suction, the detected gas enters the fan module 400 through the air outlet 322, after the gas smoke detection chamber 310, the light source emitted by the first light source emitter 330 irradiates on a path through which the gas flows, when particles generated by factors such as aging of electric equipment components, side reaction in charging and discharging processes, thermal decomposition and the like are dispersed in the gas, the light beams are scattered by the particles due to solid characteristic products, and after the first light receiving sensor 340 receives scattered light signals, the light signals are converted into electric signals, the intensity and the mode of the electric signals are analyzed by the circuit main board 600, so that the concentration and the size of the particles are determined, and the particles are displayed on the touch screen 810.
It should be noted that, the smoke detection assembly 300 may be provided with multiple groups, and the different areas are sampled and detected through external sampling tubes respectively.
In this embodiment, the condensation core detection assembly 700 includes a condensation core detection cavity seat 720 installed in a condensation core detection housing 710, a condensation core detection cavity cover 730 is sealed and fastened on the condensation core detection cavity seat 720, a condensation core detection main board 740 is installed in the condensation core detection housing 710 at one side of the condensation core detection cavity seat 720, and the condensation core detection main board 740 is electrically connected with the circuit main board 600.
In this embodiment, the condensation nucleus detecting cavity seat 720 is provided with a humidity adjusting chamber 721, a negative pressure chamber 722 and a condensation nucleus detecting chamber 723, the condensation nucleus detecting chamber 723 is connected with the negative pressure chamber 722 through a second valve 724, the humidity adjusting chamber 721 is connected with the condensation nucleus detecting chamber 723 through a first valve 725, one side of the condensation nucleus detecting cavity seat 720 is provided with a first sampling air path and a second sampling air path, the first sampling air path is connected with the condensation nucleus detecting chamber 723 through a third valve 728, the second sampling air path is connected with the humidity adjusting chamber 721 through a fourth valve 729, air inlet ends of the first sampling air path and the second sampling air path are connected with the sampling air nozzle 510, an air pump is installed on the negative pressure chamber 722, and an air outlet of the air pump is connected with the air outlet channel 500 through a hose.
Before use, all valves of the condensation nucleus detection assembly 700 are closed, when in use, the second valve 724 is opened, the condensation nucleus detection chamber 723 is communicated with the negative pressure chamber 722, an air pump arranged on the negative pressure chamber 722 is opened, negative pressure is formed in the condensation nucleus detection chamber 723 and the negative pressure chamber 722 under the operation of the air pump, the negative pressure value is monitored through the pressure sensor 7231, after reaching a negative pressure working value, the operation of the air pump is stopped, the second valve 724 is closed at the moment, after the condensation nucleus detection chamber 723 is isolated from the negative pressure chamber 722, the first valve 725, the third valve 728 and the fourth valve 729 are opened, at the moment, the condensation nucleus detection chamber 723 absorbs gas of the first sampling gas circuit and the second sampling gas circuit under the negative pressure state, the gas of the second sampling gas circuit is firstly wetted through the humidity adjusting chamber 721 and then enters the condensation nucleus detection chamber 723, the gas in the first sampling gas path directly enters the condensation nucleus detection chamber 723 through the first sampling gas path, at this time, the condensation nucleus detection chamber 723 forms a normal pressure state, the first valve 725, the third valve 728 and the fourth valve 729 are closed, the second valve 724 is opened, the negative pressure chamber 722 is communicated with the condensation nucleus detection chamber 723, the dry and wet mixed gas in the condensation nucleus detection chamber 723 is mixed to form cloud mist under the disturbance of the negative pressure through the differential pressure between the negative pressure state of the negative pressure chamber 722 and the normal pressure of the condensation nucleus detection chamber 723, the change of the intensity of the light source received by the second light receiving sensor 7236 is detected, the water molecules in the cloud state are attached to the surfaces of small-particle-size particles which cannot be detected by the smoke detection assembly 300, so that the water molecules in the cloud state are more easily identified by the second light receiving sensor 7236 after the whole particle size is enlarged, through the dual detection of the smoke detection assembly 300 and the condensation nucleus detection assembly 700, when the detected dangerous material particle value is larger than the set value, the alarm is given out timely through the buzzer, so that the problem that small particles of the detection device in the prior art are difficult to identify due to the fact that the particle size is too small and cannot be effectively detected is solved, and the sensitivity of equipment detection is greatly improved;
After the detection is completed, all valves are opened, all positions of the condensation nucleus detection chamber 723, the negative pressure chamber 722, the humidity adjustment chamber 721 and the air path are in a normal pressure state, the detection process of one period is finished, the condensation nucleus detection assembly 700 then carries out the next detection period according to the programmed set interval time, and the air pump starts to work, and the steps are circulated.
In this embodiment, the condensation nucleus detecting chamber 723 is provided with a pressure sensor 7231, one side of the condensation nucleus detecting chamber 723 is provided with a second light source emitter 7234, a second light receiving sensor 7236 is installed in the condensation nucleus detecting chamber 723 opposite to the second light source emitter 7234, and the second light source emitter 7234, the second light receiving sensor 7236 and the pressure sensor 7231 are electrically connected with the condensation nucleus detecting main board 740.
The pressure sensor 7231 is configured to monitor the pressure in the condensation nucleus detection chamber 723, and the second light receiving sensor 7236 is configured to detect the cloud gas entering the condensation nucleus detection chamber 723 under the irradiation of the light from the second light source emitter 7234.
A sealing gasket 760 is arranged between the condensation nucleus detection cavity seat 720 and the condensation nucleus detection cavity cover 730, and a sealing pressure rib 770 is arranged at the buckling parts of the humidity adjusting chamber 721, the negative pressure chamber 722 and the condensation nucleus detection cavity cover 730, wherein the sealing gasket 760 and the sealing pressure rib 770 are used for guaranteeing the sealing performance of the negative pressure chamber 722 and the humidity adjusting chamber 721 and avoiding inaccurate detection results caused by air leakage.
In this embodiment, the fan module 400 includes a fan module housing 410, and a centrifugal fan is installed in the fan module housing 410.
The fan module 400 realizes the flow of gas by the rotation of the centrifugal fan, and specifically, the flow rate of the sampled gas is controlled by controlling the parameters of the fan.
In this embodiment, the air inlet channel 200 is provided with a filter assembly 210, the filter assembly 210 includes a slot 211 installed on the air inlet channel 200, a filter plate 212 is inserted into the slot 211, and the top of the filter plate 212 is in sealing fit with the notch of the slot 211.
The filter assembly 210 is used for enabling the initial gas to enter the smoke detection assembly 300 to remove impurities in the gas, so that the detection result of the smoke detection assembly 300 is more accurate, and after the smoke detection assembly is used for a period of time, the filter plate 212 is fully attached with impurities, so that the filter plate 212 can be replaced, and the smoothness of a gas path is ensured.
In this embodiment, a filter holder 780 is installed outside the condensation nucleus detection housing 710, and a filter 790 is installed on the filter holder 780, and the filter 790 is installed on the first sampling air path and the second sampling air path respectively.
The filter 790 is arranged to remove some dust in the gas which is easy to cause false alarm, improve the detection accuracy and have a certain error prevention function, and in particular, two filters 790 are arranged and respectively installed on the first sampling gas path and the second sampling gas path.
In this embodiment, a temperature and humidity sensor 350 and a gas sensor 360 are further installed in the smoke detection chamber 310, and an extinction chamber 370 is further provided in the smoke detection chamber 310, where the extinction chamber 370 is located at a side of the first light receiving sensor 340 away from the first light source emitter 330.
The temperature and humidity sensor 350 is used for monitoring temperature and humidity indexes of the sampled gas, the gas sensor 360 is used for detecting abnormal gas molecules in the sampled gas, and the extinction chamber 370 is used for eliminating incoming light rays, so that refraction and diffuse reflection are avoided, and misjudgment is caused by the enhancement of the intensity of the light source received by the first light receiving sensor 340.
It should be noted that, the inner partition 800 is provided with a touch screen 810, the cover 900 is provided with a through slot 910, and the touch screen 810 is embedded in the through slot 910.
The touch screen 810 is used to demonstrate the device operating state and set operating parameters.
In this embodiment, the inner partition 800 is further provided with an indicator light 820 and a buzzer 830, the indicator light 820 and the buzzer 830 are electrically connected to the circuit board 600, and the housing 100 is further provided with a communication antenna 110 at one side thereof, and the communication antenna 110 is electrically connected to the circuit board 600.
When the data detected by the smoke detection assembly 300 or the condensation nucleus detection assembly 700 is larger than the threshold value set in the circuit main board 600, the buzzer 830 is automatically triggered to buzzing, and the positioning is performed through the indicator lamp 820, so that the worker can find a specific position conveniently.
The utility model relates to a double-detection fire hazard early warning device, which has the following working principle:
When the device is used, the fan module 400 is driven, the centrifugal fan starts to rotate, gas enters the smoke detection cavity 310 from the gas inlet channel 200, the light source emitted by the first light source emitter 330 irradiates the gas, when particles generated by factors such as aging of components in the electrical device, side reactions in the charging and discharging processes, thermal decomposition and the like are dispersed in the gas, light beams are scattered by the particles, the light signals received and scattered by the first light receiving sensor are converted into electric signals, the intensity and the mode of the electric signals are analyzed by the circuit main board 600 to determine the concentration and the size of the particles, meanwhile, the temperature and humidity of the gas are monitored by the temperature and humidity sensor 350, abnormal gas molecules are detected by the gas sensor 360 and displayed on the touch screen 810, the smoke detection cavity is also provided with an air outlet channel, and the gas in the smoke detection cavity always flows, so that the gas in the monitored environment can be monitored and analyzed in real time;
The gas exhausted from the smoke detection chamber 310 enters the fan module 400, and on the gas outlet channel 500 of the fan module 400, the exhausted gas enters the condensation nucleus detection assembly 700 after being filtered by the connected first sampling gas circuit and second sampling gas circuit;
Before use, all valves of the condensation nucleus detection assembly 700 are closed, and the condensation nucleus detection chamber 723 and the negative pressure chamber 722 are not in air;
When in use, the second valve 724 is opened, the condensation nucleus detection chamber 723 is communicated with the negative pressure chamber 722, an air pump arranged on the negative pressure chamber 722 is opened, under the operation of the air pump, the condensation nucleus detection chamber 723 and the negative pressure chamber 722 form negative pressure, the negative pressure value is monitored by the pressure sensor 7231, after reaching the negative pressure working value, the operation of the air pump is stopped, the second valve 724 is closed at the moment, after the condensation nucleus detection chamber 723 is isolated from the negative pressure chamber 722, the first valve 725, the third valve 728 and the fourth valve 729 are opened, at the moment, the condensation nucleus detection chamber 723 absorbs the gas of the first sampling gas path and the second sampling gas path under the negative pressure state, the gas of the second sampling gas path enters the condensation nucleus detection chamber 723 after being wetted by the humidity adjusting chamber 721, the gas of the first sampling gas path directly enters the condensation nucleus detection chamber 723 through the first sampling gas path, the two gas paths form a dry state and a wet state, and are mixed in the condensation nucleus detection chamber 723, at this time, the condensation nucleus detection chamber 723 forms a normal state, the first valve 725, the third valve 728 and the fourth valve 729 are closed, the second valve 724 is opened, the negative pressure chamber 722 is communicated with the condensation nucleus detection chamber 723, the dry and wet mixed gas in the condensation nucleus detection chamber 723 is mixed to form cloud mist under the disturbance of the negative pressure through the differential pressure between the negative pressure state of the negative pressure chamber 722 and the normal pressure of the condensation nucleus detection chamber 723, the second light source transmitter 7234 irradiates, so that the water molecules in the cloud state are attached to the surfaces of the small-particle-size particles which are not detected by the smoke detection assembly 300, are more easily identified by the second light receiving sensor 7236, after the data processing is carried out on the double detection data of the smoke detection assembly 300 and the condensation nucleus detection assembly 700, the touch screen 810 is used for displaying, when the detected dangerous material particle value is larger than the set value, the buzzer is used for alarming in time, so that the detection sensitivity of the equipment is greatly improved, and the detection effect is enhanced;
After the detection is completed, all valves are opened, all positions of the condensation nucleus detection chamber 723, the negative pressure chamber 722, the humidity adjustment chamber 721 and the air path are in a normal pressure state, the detection process of one period is finished, the condensation nucleus detection assembly 700 then carries out the next detection period according to the programmed set interval time, and the air pump starts to work, and the steps are circulated.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (10)
1. The double-detection fire hazard early warning device comprises a shell (100) and is characterized in that one side in the shell (100) is connected with a smoke detection assembly (300) through an air inlet channel (200), an air outlet end of the smoke detection assembly (300) is communicated with an air inlet end of a fan module (400), and air outlet of the fan module (400) is communicated to the outside of the shell (100) through an air outlet channel (500), an inner partition plate (800) is arranged on the upper cover of the shell (100), and a cover plate (900) is buckled on the shell (100) above the inner partition plate (800);
The smoke detection device comprises a shell (100), a sampling air nozzle (510) is arranged on an air outlet channel (500) in the shell (100), the air outlet channel (500) is connected with a condensation nucleus detection assembly (700) through the sampling air nozzle (510), an air outlet end of the condensation nucleus detection assembly (700) is communicated with the air outlet channel (500), a circuit main board (600) is arranged in the shell (100), and the smoke detection assembly (300), the condensation nucleus detection assembly (700) and a fan module (400) are electrically connected with the circuit main board (600).
2. The dual-detection fire hazard warning device according to claim 1, wherein the smoke detection assembly (300) comprises a smoke detection chamber (310), a sealing cover body (320) is arranged on the upper cover of the smoke detection chamber (310), an air inlet (321) for sampling air flow to enter the smoke detection chamber (310) and an air outlet (322) for discharging the smoke detection chamber (310) are arranged on the sealing cover body (320), a first light source emitter (330) is fixed in the smoke detection chamber (310), a first light receiving sensor (340) is further fixed in the smoke detection chamber (310), and the first light receiving sensor (340) is located in the light direction emitted by the first light source emitter (330).
3. The dual detection fire hazard warning device according to claim 1, wherein the condensation detection assembly (700) comprises a condensation detection cavity seat (720) arranged in a condensation detection housing (710), a condensation detection cavity cover (730) is arranged on the condensation detection cavity seat (720) in a sealing manner, a condensation detection main board (740) is arranged in the condensation detection housing (710) positioned at one side of the condensation detection cavity seat (720), and the condensation detection main board (740) is electrically connected with the circuit main board (600).
4. The fire hazard early warning device for double detection according to claim 3, wherein the condensation nucleus detection cavity seat (720) is provided with a humidity adjusting chamber (721), a negative pressure chamber (722) and a condensation nucleus detection chamber (723), the condensation nucleus detection chamber (723) is connected with the negative pressure chamber (722) through a second valve (724), the humidity adjusting chamber (721) is connected with the condensation nucleus detection chamber (723) through a first valve (725), one side of the condensation nucleus detection cavity seat (720) is provided with a first sampling air passage and a second sampling air passage, the first sampling air passage is connected with the condensation nucleus detection chamber (723) through a third valve (728), the second sampling air passage is connected with the humidity adjusting chamber (721) through a fourth valve (729), air inlet ends of the first sampling air passage and the second sampling air passage are connected with a sampling air nozzle (510), the negative pressure chamber (722) is provided with an air outlet of the pump, and an air outlet of the pump is connected with an air outlet passage (500) through an air suction hose.
5. The dual detection fire hazard warning device according to claim 4, characterized in that a pressure sensor (7231) is installed on the condensation nucleus detection chamber (723), a second light source emitter (7234) is installed on one side of the condensation nucleus detection chamber (723), a second light receiving sensor (7236) is installed in the condensation nucleus detection chamber (723) on the opposite side of the second light source emitter (7234), and the second light source emitter (7234), the second light receiving sensor (7236) and the pressure sensor (7231) are electrically connected with the condensation nucleus detection main board (740).
6. The dual detection fire hazard warning device as set forth in claim 1, wherein the fan module (400) comprises a fan module housing (410), and a centrifugal fan is installed in the fan module housing (410).
7. The dual-detection fire hazard warning device according to claim 1, wherein the air inlet channel (200) is provided with a filter assembly (210), the filter assembly (210) comprises a slot (211) arranged on the air inlet channel (200), a filter plate (212) is inserted into the slot (211), and the top of the filter plate (212) is in sealing fit with a notch of the slot (211).
8. The dual detection fire hazard warning device as set forth in claim 4, wherein the first and second sampling air paths are provided with a plurality of filters (790), the filters (790) being mounted outside the condensation nucleus detection housing (710) through a filter holder (780).
9. The dual-detection fire hazard warning device according to claim 2, wherein a temperature and humidity sensor (350) and a gas sensor (360) are further installed in the smoke detection chamber (310), and an extinction chamber (370) is further arranged in the smoke detection chamber (310), and the extinction chamber (370) is located at one side, far from the first light source emitter (330), of the first light receiving sensor (340).
10. The dual-detection fire hazard warning device according to claim 1, wherein the inner partition plate (800) is further provided with an indicator lamp (820) and a buzzer (830), the indicator lamp (820) and the buzzer (830) are electrically connected with the circuit board (600), one side of the housing (100) is further provided with a communication antenna (110), and the communication antenna (110) is electrically connected with the circuit board (600).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202520676219.7U CN224005538U (en) | 2025-04-10 | 2025-04-10 | Dual-detection fire hazard early warning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202520676219.7U CN224005538U (en) | 2025-04-10 | 2025-04-10 | Dual-detection fire hazard early warning device |
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| CN224005538U true CN224005538U (en) | 2026-03-17 |
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| CN202520676219.7U Active CN224005538U (en) | 2025-04-10 | 2025-04-10 | Dual-detection fire hazard early warning device |
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