Condensation nucleus detection assembly and fire hazard early warning device

Abstract

The utility model relates to the technical field of overheating hidden danger monitoring, in particular to a condensation nucleus detection assembly and a fire hazard early warning device.The condensation nucleus detection assembly comprises a condensation nucleus detection shell, a condensation nucleus detection cavity base is installed in the condensation nucleus detection shell, and a condensation nucleus detection cavity cover is arranged on the condensation nucleus detection cavity base in a sealed and buckled mode; a condensation nucleus detection mainboard is mounted in the condensation nucleus detection shell, and the condensation nucleus detection mainboard is electrically connected with the condensation nucleus detection cavity seat; the condensation nucleus detection cavity base is connected with a temperature and humidity detection assembly through an air pump, and the air pump and the temperature and humidity detection assembly are fixed to the outer side of the condensation nucleus detection shell. The humidity adjusting chamber provided by the utility model provides a favorable humidity condition for condensation nucleus detection, promotes the formation of cloud and mist, and improves the detection stability and reliability of equipment; through the arrangement of the temperature and humidity detection assembly, the consistency of detection conditions of condensation nucleus detection is realized, the accuracy of equipment data results is improved, and the problem of inaccurate detection results caused by different humidity is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to overheat hidden danger monitoring technical field especially, relates to a condensation nucleus detection subassembly and fire hazard early warning device. BACKGROUND

[0002] With the continuous advancement of industrial automation and intelligentization process, the application range of electrical equipment in public infrastructure is expanding, especially in key places such as substations, energy storage systems, distribution rooms, data centers, and large-scale electrical equipment deployment has become an important part of infrastructure construction. The running state of these devices directly affects the safety and stability of social infrastructure. Among them, the device overheating problem as the most prominent safety hazard may lead to device performance degradation, system failure and even cause electrical fire and other major safety accidents, not only causing huge economic losses, but also endangering public safety.

[0003] Fire hazard monitoring refers to the process of real-time monitoring and analysis of potential fire hazards of various systems or devices, mainly including temperature monitoring, gas monitoring, particle monitoring, etc. Particle monitoring refers to detecting small solid particles or smoke that may be generated when the system overheats or overheating events occur. These particles are usually caused by material combustion, thermal decomposition or other chemical reactions, and may be a precursor to fire. Particle monitoring plays an important role in fire hazard monitoring and early warning. Particle monitoring is more sensitive to particulate smoke, but is easily disturbed by dust, and small particles are difficult to identify due to their small particle size, resulting in low device sensitivity and poor detection and early warning effect. Therefore, in order to better protect the safety of electrical equipment, a fire hazard early warning device capable of further detecting the heat of electrical equipment is needed. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a condensation nucleus detection subassembly and fire hazard early warning device. Through the setting of the condensation nucleus detection cavity seat, small particle size particulate matter that cannot be detected by light scattering analysis technology can be further detected, greatly improving the sensitivity of device detection. The problem of the prior art that the detection device cannot effectively detect small particles is solved. Through the setting of the temperature and humidity detection assembly, the detection conditions of the condensation nucleus detection are consistent, the accuracy and consistency of the device data results are improved, and the problem of inaccurate detection results caused by different humidity is solved.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A kind of condensation nucleus detection assembly, including condensation nucleus detection shell, condensation nucleus detection cavity seat is installed in the condensation nucleus detection shell, condensation nucleus detection cavity cover is sealed and buckled on the condensation nucleus detection cavity seat, condensation nucleus detection mainboard is installed in the condensation nucleus detection shell, and the condensation nucleus detection mainboard is electrically connected with condensation nucleus detection cavity seat;The condensation nucleus detection cavity seat is equipped with humidity adjusting chamber, and the humidity adjusting chamber is connected with temperature and humidity detection component by air pump, and the air pump and temperature and humidity detection component are fixed to the outside of condensation nucleus detection shell;

[0007] The temperature and humidity detection component includes temperature and humidity detection chamber, and the outlet end of the air pump is communicated with the temperature and humidity detection chamber;Temperature and humidity sensor is installed in the temperature and humidity detection chamber, and the temperature and humidity detection chamber is provided with gas outlet nozzle.

[0008] Preferably, the condensation nucleus detection cavity seat is also equipped with negative pressure chamber and condensation nucleus detection chamber, the condensation nucleus detection chamber is connected with the negative pressure chamber by second valve, and the humidity adjusting chamber is connected with the condensation nucleus detection chamber by first valve;One side of the condensation nucleus detection cavity seat is equipped with first sampling gas path and second sampling gas path, wherein the first sampling gas path is connected with the condensation nucleus detection chamber by third valve, and the second sampling gas path is connected with the humidity adjusting chamber by fourth valve;The negative pressure chamber is communicated with the inlet end of the air pump.

[0009] Preferably, the temperature and humidity detection component further includes liquid supplement tank, and the humidity adjusting chamber and the liquid supplement tank are communicated by waterway control valve;The waterway control valve is electrically connected with the condensation nucleus detection mainboard.

[0010] Preferably, liquid level sensor is installed in the humidity adjusting chamber, and the temperature and humidity sensor and the liquid level sensor are electrically connected with the condensation nucleus detection mainboard.

[0011] Preferably, light source seat is installed on one side of the condensation nucleus detection chamber, light source emitter is installed on the light source seat, light receiving sensor is installed on the condensation nucleus detection chamber on the side opposite to the light source emitter, and the light source emitter and the light receiving sensor are electrically connected with the condensation nucleus detection mainboard.

[0012] Preferably, sealing gasket is installed between the condensation nucleus detection cavity seat and the condensation nucleus detection cavity cover.

[0013] Preferably, sealing pressure rib is installed at the buckle of the humidity adjusting chamber and the negative pressure chamber and the condensation nucleus detection cavity cover.

[0014] Preferably, filter tip fixing seat is installed outside the condensation nucleus detection shell, and condensation nucleus sampling gas path filter tip connected with the first sampling gas path and the second sampling gas path respectively is fixed on the filter tip fixing seat.

[0015] Preferably, a pressure sensor is mounted on the condensation nucleus detection chamber, and the pressure sensor is electrically connected with the condensation nucleus detection mainboard.

[0016] The utility model also requires protecting a fire hazard early warning device, including above-mentioned condensation nucleus detection subassembly.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) the condensation nucleus detection subassembly of the utility model, through inhale the gas in two sampling gas paths under negative pressure, together in the condensation nucleus detection chamber Mixed cloud and mist, make small particle size particulate matter surface adhere to the water molecule under the cloud and mist state, condense into large particle diameter particle, so that can be detected by light scattering analysis technology, greatly improve the sensitivity of equipment detection, can detect the invisible small particle size particulate matter produced in the overheat smoldering stage, and early warning in time.

[0019] (2) the utility model provides favorable humidity conditions for condensation nucleus detection through the setting of humidity adjusting chamber, promotes the formation of cloud and mist, and is favorable to the condensation of small particle size particles and cloud and mist into large particle material, so that it can be successfully detected, and the detection stability and reliability of the equipment are improved.

[0020] (3) the temperature and humidity detection subassembly of the utility model, through the temperature and humidity sensor, the temperature and humidity of the gas discharged from the condensation nucleus detection chamber are measured, and the liquid level in the humidity adjusting chamber is measured through the liquid level sensor;When the liquid level sensor detects that the humidity adjusting chamber is short of liquid, or the temperature and humidity sensor detects that the gas humidity is low, the negative pressure chamber and the condensation nucleus detection chamber are formed into negative pressure through the air pump, and the liquid in the external liquid supplement tank is drawn into the humidity adjusting chamber by the negative pressure, and the liquid supplement is completed, through the liquid supplement, the humidity adjusting function of the humidity adjusting chamber is ensured. And automatic liquid supplement avoids the need for device shutdown when the equipment is supplemented, improves the operation efficiency and monitoring stability of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is an explosion structure schematic view of a condensation nucleus detection subassembly of the utility model;

[0022] Fig. 2 It is a top view structure schematic view of the temperature and humidity detection subassembly of the condensation nucleus detection subassembly of the utility model;

[0023] Fig. 3 It is an explosion structure schematic view in the condensation nucleus detection shell of the condensation nucleus detection subassembly of the utility model;

[0024] Fig. 4 It is a structure schematic view of the condensation nucleus detection cavity seat of the condensation nucleus detection subassembly of the utility model.

[0025] In the diagram: 710, Condensation nucleus detector housing; 720, Condensation nucleus detector chamber seat; 730, Condensation nucleus detector chamber cover; 740, Condensation nucleus detector main board; 750, Air pump; 760, Sealing gasket; 770, Sealing pressure rib; 780, Filter nozzle holder; 790, Condensation nucleus sampling gas path filter nozzle; 711, Condensation nucleus detector cover; 721, Humidity control chamber; 722, Negative pressure chamber; 723, Condensation nucleus detector chamber. 724. Second valve; 725. First valve; 726. First sampling gas path; 727. Second sampling gas path; 728. Third valve; 729. Fourth valve; 7231. Pressure sensor; 7232. Light source holder; 7234. Light source transmitter; 7236. Light receiving sensor; 800. Temperature and humidity detection assembly; 850. Temperature and humidity detection chamber; 860. Water circuit control valve; 870. Liquid replenishment tank. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] like Figs. 1-4 As shown, a condensation nucleus detection assembly includes a condensation nucleus detection housing 710, a condensation nucleus detection chamber seat 720 installed inside the condensation nucleus detection housing 710, a condensation nucleus detection chamber cover 730 sealed on the condensation nucleus detection chamber seat 720, a condensation nucleus detection main board 740 installed inside the condensation nucleus detection housing 710, and the condensation nucleus detection main board 740 electrically connected to the condensation nucleus detection chamber seat 720; the condensation nucleus detection chamber seat 720 is provided with a humidity regulating chamber 721, the humidity regulating chamber 721 is connected to a temperature and humidity detection assembly 800 through an air pump 750, and the air pump 750 and the temperature and humidity detection assembly 800 are fixed to the outside of the condensation nucleus detection housing 710;

[0029] The temperature and humidity detection component 800 includes a temperature and humidity detection chamber 850, and the air outlet of the air pump 750 is connected to the temperature and humidity detection chamber 850; a temperature and humidity sensor is installed inside the temperature and humidity detection chamber 850, and the temperature and humidity detection chamber 850 is provided with an air outlet nozzle.

[0030] The upper cover of the condensation nucleus detection shell 710 is provided with a condensation nucleus detection cover 711. The condensation nucleus detection cavity seat 720 is used for detecting the gas after temperature and humidity treatment. The detected data information is analyzed and processed by the condensation nucleus detection mainboard 740 to confirm whether a fire hazard occurs. The gas after condensation nucleus detection is extracted by the air pump 750 to the temperature and humidity detection chamber 850 for monitoring. When the monitored data is abnormal, the temperature and humidity of the gas in the humidity adjusting chamber 721 of the condensation nucleus detection cavity seat 720 is adjusted in time to ensure consistent detection conditions and improve the accuracy of the detection results.

[0031] In the embodiment, the condensation nucleus detection cavity seat 720 is also provided with 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 gas path 726 and a second sampling gas path 727. The first sampling gas path 726 is connected with the condensation nucleus detection chamber 723 through a third valve 728. The second sampling gas path 727 is connected with the humidity adjusting chamber 721 through a fourth valve 729. The negative pressure chamber 722 is communicated with the air inlet end of the air pump 750.

[0032] Before use, all valves of the condensation nucleus detection cavity seat 720 are closed; in use, the second valve 724 is opened, the condensation nucleus detection cavity 723 is communicated with the negative pressure cavity 722, the air pump 750 communicated with the negative pressure cavity 722 is opened, under the working of the air pump 750, the negative pressure is formed in the condensation nucleus detection cavity 723 and the negative pressure cavity 722, the negative pressure value is monitored through the pressure sensor 7231, after reaching the negative pressure working value, the working of the air pump 750 is stopped, the second valve 724 is closed, the first valve 725, the third valve 728 and the fourth valve 729 are opened, at this time, the condensation nucleus detection cavity 723 sucks the gas of the first sampling gas path 726 and the second sampling gas path 727 under the negative pressure state, through the opening of the fourth valve 729 and the first valve 725, the gas of the second sampling gas path 727 enters into the condensation nucleus detection cavity 723 after being humidified by the humidity adjusting chamber 721, the gas of the first sampling gas path 726 directly enters into the condensation nucleus detection cavity 723 through the first sampling gas path 726, the two gas paths form one dry and one wet, and are mixed in the condensation nucleus detection cavity 723, the condensation nucleus detection cavity 723 after mixing 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 cavity 722 is communicated with the condensation nucleus detection cavity 723, through the differential pressure between the negative pressure state of the negative pressure cavity 722 and the normal pressure of the condensation nucleus detection cavity 723, the dry and wet mixed gas in the condensation nucleus detection cavity 723 is mixed to form cloud and mist under the disturbance of the negative pressure, so that the water molecules in the cloud and mist state are attached to the surface of the small particle size particulate matters, the light scattered by the light source emitter 7234 is more easily recognized by the light receiving sensor 7236, the small particle size particulate matters that cannot be detected by general light scattering analysis technology can be detected, the sensitivity of the equipment detection is greatly improved, and the detection effect is better.

[0033] After the detection is completed, the gas in the condensation nucleus detection cavity 723 and the negative pressure cavity 722 is pumped out to the temperature and humidity detection cavity 850 by the air pump 750, and is discharged out of the shell by the air outlet.

[0034] In the embodiment, the temperature and humidity detection assembly 800 further comprises a liquid supplement tank 870, the humidity adjusting chamber 721 and the liquid supplement tank 870 are communicated through a waterway control valve 860; the waterway control valve 860 is electrically connected with the condensation nucleus detection main board 740.

[0035] In the embodiment, a liquid level sensor is installed in the humidity adjusting chamber 721, and the temperature and humidity sensor and the liquid level sensor are electrically connected with the condensation nucleus detection main board 740.

[0036] After the gas after the detection is completed enters the temperature and humidity detection chamber 850, the temperature and humidity sensor measures the humidity of the entering gas. When the measured humidity is low, the humidity adjusting chamber 721 needs to be supplemented with liquid to ensure the stability of the humidity adjusting function. At the same time, the humidity adjusting chamber 721 is provided with a liquid level sensor. When the liquid level sensor detects that the humidity adjusting chamber 721 is short of liquid, the humidity adjusting chamber 721 also needs to be supplemented with liquid to ensure the formation of the cloud and fog. Therefore, when the liquid level sensor detects that the humidity adjusting chamber 721 is short of liquid, or the temperature and humidity sensor detects that the humidity of the gas extracted by the air pump 750 is low, after the second valve 724 is opened and the first valve 725, the third valve 728 and the fourth valve 729 are closed, the air pump 750 is started to extract air from the negative pressure chamber 722. At this time, the negative pressure chamber 722 and the condensation nucleus detection chamber 723 form a negative pressure, and the air pump 750 stops extracting air when the pressure sensor reaches the set negative pressure value. The first valve 725 and the waterway control valve 860 are opened, and the negative pressure of the negative pressure chamber 722 and the condensation nucleus detection chamber 723 causes the liquid in the external liquid supplement tank 870 to enter the humidity adjusting chamber 721, completing the liquid supplement. Through the liquid supplement, the humidity in the humidity adjusting chamber 721 is kept consistent, ensuring the accuracy of the condensation nucleus detection result and the consistency of the detection condition, providing a favorable guarantee for the detection effect of the condensation nucleus detection. Moreover, the automatic liquid supplement avoids the need to stop the device when supplementing liquid, improving the operation efficiency and monitoring stability of the device.

[0037] After the liquid supplement is completed, all the valves are opened, and the negative pressure chamber 722, the condensation nucleus detection chamber 723, the humidity adjusting chamber 721 and all positions of the air path are in a normal pressure state, and thus the detection process of one cycle is completed. The condensation nucleus detection chamber 720 then performs the next detection cycle according to the program setting interval time, and the air pump 750 starts to work, and the above steps are repeated.

[0038] In the embodiment, the condensation nucleus detection chamber 723 is provided with a light source seat 7232 on one side, the light source seat 7232 is provided with a light source emitter 7234, and the condensation nucleus detection chamber 723 opposite to the light source emitter 7234 is provided with a light receiving sensor 7236. The light source emitter 7234 and the light receiving sensor 7236 are electrically connected with the condensation nucleus detection main board 740.

[0039] The light receiving sensor 7236 is used to detect the cloud and fog entering the condensation nucleus detection chamber 723 under the irradiation of the light source emitter 7234.

[0040] In the embodiment, the condensation nucleus detection chamber 720 and the condensation nucleus detection chamber cover 730 are provided with a sealing gasket 760.

[0041] In the embodiment, the humidity adjusting chamber 721 and the negative pressure chamber 722 are provided with the sealing pressure rib 770 at the joint with the condensation nucleus detection cavity cover 730.

[0042] The sealing gasket 760 and the sealing pressure rib 770 are used to ensure the sealing performance of the negative pressure chamber 722 and the humidity adjusting chamber 721, so as to avoid the leakage of air and the inaccurate detection result.

[0043] In the embodiment, the condensation nucleus detection shell 710 is externally provided with the filter fixing seat 780, and the condensation nucleus sampling gas path filter 790 connected with the first sampling gas path 726 and the second sampling gas path 727 is fixed on the filter fixing seat 780.

[0044] The condensation nucleus sampling gas path filter 790 is used to remove some dust in the gas which is easy to cause error, so as to improve the detection accuracy and prevent the error.

[0045] In the embodiment, the condensation nucleus detection cavity 723 is provided with the pressure sensor 7231, and the pressure sensor 7231 is electrically connected with the condensation nucleus detection mainboard 740.

[0046] The pressure sensor 7231 is used to monitor the pressure in the condensation nucleus detection cavity 723, and the negative pressure formed by the negative pressure chamber 722 and the condensation nucleus detection cavity 723 is used to facilitate the formation of the cloud and the mist.

[0047] Embodiment 2

[0048] A fire hazard early warning device comprises the condensation nucleus detection assembly of embodiment 1.

[0049] The working principle of the condensation nucleus detection assembly is as follows:

[0050] Before use, all the valves of the condensation nucleus detection cavity seat 720 are closed, and the condensation nucleus detection cavity 723 and the negative pressure chamber 722 do not intake air.

[0051] In use, the second valve 724 is opened, the condensation nucleus detection chamber 723 is communicated with the negative pressure chamber 722, the air suction pump 750 communicated with the negative pressure chamber 722 is opened, under the working of the air suction pump 750, the negative pressure is formed in the condensation nucleus detection chamber 723 and the negative pressure chamber 722, the negative pressure value is monitored through the pressure sensor 7231, after reaching the negative pressure working value, the working of the air suction pump 750 is stopped, the second valve 724 is closed, the condensation nucleus detection chamber 723 is isolated from the negative pressure chamber 722, then the first valve 725, the third valve 728 and the fourth valve 729 are opened, at this time, the condensation nucleus detection chamber 723 sucks the gas of the first sampling gas path 726 and the second sampling gas path 727 in the negative pressure state, through the opening of the fourth valve 729 and the first valve 725, the gas of the second sampling gas path 727 enters into the condensation nucleus detection chamber 723 after being humidified by the humidity adjusting chamber 721, the gas of the first sampling gas path 726 directly enters into the condensation nucleus detection chamber 723 through the first sampling gas path 726, the two gas paths form dry and wet, and are mixed in the condensation nucleus detection chamber 723, the mixed condensation nucleus detection chamber 723 forms the 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, 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 dry and wet mixed gas in the condensation nucleus detection chamber 723 is mixed to form the cloud and mist under the disturbance of the negative pressure, so that the water molecules in the cloud and mist state are attached to the surface of the small particle size particulate matter, with the light scattered by the light source emitter 7234, the light is recognized by the light receiving sensor 7236, the small particle size particulate matter which cannot be detected by general light scattering analysis technology can be detected, and is transmitted to the condensation nucleus detection mainboard for data analysis, whether the fire will occur is pre-judged;

[0052] After the gas after the detection is completed enters the temperature and humidity detection chamber 850 through the air pump 750, the temperature and humidity sensor measures the humidity of the entering gas, when the measured humidity is low, the humidity adjusting chamber 721 needs to be supplemented with liquid to ensure that the humidity in the detected gas is consistent; at the same time, the humidity adjusting chamber 721 is provided with a liquid level sensor, when the liquid level sensor detects that the humidity adjusting chamber 721 is short of liquid, the humidity adjusting chamber 721 also needs to be supplemented with liquid to ensure the formation of the cloud and fog. Therefore, when the liquid level sensor detects that the humidity adjusting chamber 721 is short of liquid, or the temperature and humidity sensor detects that the humidity of the gas pumped out by the air pump 750 is low, after the second valve 724 is opened and the first valve 725, the third valve 728 and the fourth valve 729 are closed, the air pump 750 is started to pump the negative pressure chamber 722, at this time, the negative pressure chamber 722 and the condensation nucleus detection chamber 723 form a negative pressure, when the pressure sensor reaches the set negative pressure value, the air pump 750 stops pumping, the first valve 725 and the waterway control valve 860 are opened, the negative pressure of the negative pressure chamber 722 and the condensation nucleus detection chamber 723 makes the humidity adjusting chamber 721 draw the liquid in the external liquid supplement tank 870 into the humidity adjusting chamber 721 to complete the liquid supplement, through the liquid supplement, the humidity in the humidity adjusting chamber 721 is kept consistent, the accuracy of the condensation nucleus detection result and the consistency of the detection condition are ensured, and favorable guarantee is provided for the detection effect of the condensation nucleus detection;

[0053] After the liquid supplement is completed, all the valves are opened, the negative pressure chamber 722, the condensation nucleus detection chamber 723, the humidity adjusting chamber 721 and all positions of the gas path are in a normal pressure state, and thus the detection process of one period is completed; the condensation nucleus detection chamber continues to perform the next detection period according to the set interval time, the air pump 750 starts to work, and the above steps are repeated.

[0054] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A cloud condensation nuclei detection assembly comprising a cloud condensation nuclei detection housing (710) characterised in that: The condensation nucleus detection shell (710) is provided with a condensation nucleus detection cavity seat (720), the condensation nucleus detection cavity seat (720) is provided with a condensation nucleus detection cavity cover (730), the condensation nucleus detection shell (710) is provided with a condensation nucleus detection main plate (740), and the condensation nucleus detection main plate (740) is electrically connected with the condensation nucleus detection cavity seat (720); the condensation nucleus detection cavity seat (720) is provided with a humidity adjusting chamber (721), the humidity adjusting chamber (721) is connected with a temperature and humidity detection assembly (800) through a gas suction pump (750), and the gas suction pump (750) and the temperature and humidity detection assembly (800) are fixed to the outside of the condensation nucleus detection shell (710). The temperature and humidity detection assembly (800) comprises a temperature and humidity detection cavity (850), and the gas outlet end of the gas suction pump (750) is communicated with the temperature and humidity detection cavity (850); the temperature and humidity detection cavity (850) is provided with a temperature and humidity sensor, and the temperature and humidity detection cavity (850) is provided with a gas outlet nozzle.

2. A cloud condensation nuclei sensing assembly according to claim 1, wherein: The condensation nucleus detection cavity seat (720) is also provided with a negative pressure cavity (722) and a condensation nucleus detection cavity (723), the condensation nucleus detection cavity (723) is connected with the negative pressure cavity (722) through a second valve (724), the humidity adjusting chamber (721) is connected with the condensation nucleus detection cavity (723) through a first valve (725), one side of the condensation nucleus detection cavity seat (720) is provided with a first sampling gas path (726) and a second sampling gas path (727), the first sampling gas path (726) is connected with the condensation nucleus detection cavity (723) through a third valve (728), the second sampling gas path (727) is connected with the humidity adjusting chamber (721) through a fourth valve (729), and the negative pressure cavity (722) is communicated with the gas inlet end of the gas suction pump (750).

3. A cloud condensation nuclei sensing assembly according to claim 2, wherein: The temperature and humidity detection assembly (800) further comprises a liquid supplementing tank (870), the humidity adjusting chamber (721) and the liquid supplementing tank (870) are communicated through a water path control valve (860), and the water path control valve (860) is electrically connected with the condensation nucleus detection main plate (740).

4. A cloud condensation nuclei sensing assembly according to claim 2, wherein: The humidity adjusting chamber (721) is provided with a liquid level sensor, and the temperature and humidity sensor and the liquid level sensor are electrically connected with the condensation nucleus detection main plate (740).

5. A cloud condensation nuclei sensing assembly according to claim 2, wherein: One side of the condensation nucleus detection cavity (723) is provided with a light source seat (7232), the light source seat (7232) is provided with a light source emitter (7234), a light receiving sensor (7236) is arranged on the opposite side of the condensation nucleus detection cavity (723) of the light source emitter (7234), and the light source emitter (7234) and the light receiving sensor (7236) are electrically connected with the condensation nucleus detection main plate (740).

6. A cloud condensation nuclei sensing assembly according to claim 1, wherein: The condensation nucleus detection cavity seat (720) and the condensation nucleus detection cavity cover (730) are provided with a sealing gasket (760).

7. A cloud condensation nuclei sensing assembly according to claim 2, wherein: The humidity adjusting chamber (721) and the negative pressure cavity (722) are provided with a sealing pressure rib (770) at the clamping position of the condensation nucleus detection cavity cover (730).

8. A cloud condensation nuclei sensing assembly according to claim 1, wherein: A filter fixing base (780) is mounted outside the condensation nucleus detection shell (710), and a condensation nucleus sampling air path filter (790) connected with the first sampling air path (726) and the second sampling air path (727) respectively is fixed on the filter fixing base (780).

9. A cloud condensation nuclei sensing assembly according to claim 2, wherein: A pressure sensor (7231) is mounted on the condensation nucleus detection chamber (723), and the pressure sensor (7231) is electrically connected with the condensation nucleus detection main board (740).

10. A fire hazard early warning device, characterised in that: The condensation nucleus detection assembly comprises the condensation nucleus detection assembly according to any one of claims 1-9.

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