CN219475529U - Multi-region gas state detection device - Google Patents

Abstract

The utility model relates to a multi-region gas state detection device which comprises a detection unit and a plurality of gas inlet units, wherein all the gas inlet units are connected to the detection unit, each gas inlet unit comprises a gas pipe and a valve arranged on the gas pipe, and the valve controls the on-off states of the corresponding gas pipe and the corresponding detection unit. According to the utility model, the detection unit for the matched shared use of the valve is arranged on the air pipe, so that the detection of the whole area gas under the non-abnormal state and the screening and locking of the problem area under the abnormal state are completed, and the normal gas detection requirement is met. Meanwhile, compared with the prior art, the number of expensive high-precision detection units is not further increased no matter how many areas are to be detected, so that the cost increase of the whole detection device is effectively restrained.

Description

Multi-region gas state detection device

Technical Field

The utility model relates to the technical field of gas detection, in particular to a multi-region gas state detection device.

Background

For a part of specific places, such as cable tunnels, cable shafts, traffic tunnels, transformer stations and the like, the fire alarm and early warning requirements are large. Generally, one of the main ways of fire protection and early warning is to monitor the gas in the corresponding place and determine whether the particulate matter contained in the gas exceeds the standard, so as to determine whether a fire occurs.

In general, each site has a specific air suction device and a corresponding detection module to monitor the air in each site, thereby locking the site where the abnormal condition occurs in time. Similarly, for other situations where gas monitoring needs to be performed on multiple specific sites at the same time, for example, monitoring the leakage of volatile hazardous chemicals in a warehouse, the same problem exists as in the above process, and the more sites need to be monitored, the more corresponding detection modules are. Because the accuracy of the detection module is related to the timeliness of the abnormal state discovery, the detection module with high price is generally used, and the influence on the cost is very remarkable along with the increase of the number of the detection modules.

Disclosure of Invention

Accordingly, it is necessary to provide a multi-zone gas state detection device for solving the problem of high cost.

The utility model provides a multizone gas state detection device, includes a detecting element and a plurality of air inlet unit, all air inlet unit all is connected to detecting element, air inlet unit includes the trachea and installs the valve on the trachea, valve control corresponds the trachea with detecting element's break-make state.

The gas pipe comprises a main pipe and a branch pipe, wherein the gas inlet of the branch pipe is communicated with the main pipe, the valve is positioned on the branch pipe, and the gas outlet of the branch pipe is communicated with the detection unit.

The utility model further comprises a multi-way valve, wherein the air outlets of all the branch pipes are connected to the multi-way valve, and the multi-way valve is connected to the detection unit.

The detection unit comprises a detection box and a sampling air pump, wherein the sampling air pump is positioned between an air outlet of the branch pipe and an air inlet of the detection box.

The detection unit further comprises an exhaust valve, and the exhaust valve is connected to the air outlet of the detection box.

The sampling air pump is integrated with a check valve.

The pressure sensor is arranged in the detection box and is electrically connected to the sampling air pump.

The photoelectric smoke detector is arranged in the detection box.

The detection unit of the utility model further comprises a one-way valve positioned between the sampling air pump and the air inlet of the detection box.

The utility model also comprises a power source, and all the air outlets of the main pipes are connected to the power source in parallel.

An exhaust pipe is arranged at the air outlet of the power source, and the air outlet of the detection unit is communicated with the exhaust pipe.

The beneficial effects of the utility model are as follows:

each air inlet unit corresponds to an area needing to be subjected to air detection, so that air is obtained from the corresponding area and then is sent to the detection unit for detection, and the detection unit judges whether an abnormal condition exists in the corresponding area. Specifically, the gas pipe is responsible for introducing gas from a specific area, and whether the gas in the gas pipe can be sent to the detection unit is determined by the valve. When all valves are in an open state, all air pipes simultaneously feed air to the detection unit, at the moment, the detection unit can simultaneously carry out integral detection on the air in all areas, and as long as the integral detection result is normal, all areas are not abnormal, and the air in a specific single area is not required to be detected independently. When the whole detection result is abnormal, the valves are only required to be opened and closed in a wheel-changing way, the detection unit is used for detecting the gas in each area in a wheel-changing way, and the area with the final abnormality can be determined by comparing the detection result of each time. Therefore, the detection unit matched with the valve is arranged on the air pipe for sharing, so that the detection of the whole area gas under the non-abnormal state and the screening and locking of the problem area under the abnormal state are completed, and the normal gas detection requirement is met. Meanwhile, compared with the prior art, the number of expensive high-precision detection units is not further increased no matter how many areas are to be detected, so that the cost increase of the whole detection device is effectively restrained.

Drawings

Fig. 1 is a schematic front view of a multi-zone gas state detecting device according to an embodiment of the utility model.

Reference numerals:

1. the device comprises an air inlet unit, 11, an air pipe, 111, a main pipe, 112, branch pipes, 12, a valve, 2, a detection unit, 21, a sampling air pump, 211, a first air pipe, 22, an exhaust valve, 23, a detection box 2321, a second air pipe, 3, a multi-way valve, 4, a power source, 41, an exhaust pipe, 5, a shell, 51 and a pipe connecting opening.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1, the present embodiment provides a multi-zone gas state detection device including one detection unit 2 and a plurality of gas inlet units 1, all of the gas inlet units 1 being connected to the detection unit 2. The air inlet units 1 work independently, each air inlet unit 1 corresponds to an independent area to be detected, the air inlet of the air inlet unit 1 is communicated to the corresponding area to be detected, the air inlet unit 1 absorbs the air in the area to be detected and sends the air to the detection unit 2 for detection, and it can be understood that the detection unit 2 of the embodiment is shared and matched with all the air inlet units 1.

In this embodiment, the number of the air intake units 1 is four, and the air intake units respectively suck the air in the first area, the second area, the third area and the fourth area (four areas to be detected).

The multi-region gas state detection device of the embodiment further comprises a shell 5, and all the air inlet units 1 are mounted on the shell 5, so that integration of all the air inlet units 1 is realized, and meanwhile, the internal pipelines of the air inlet units 1 are also convenient to fix. The interval between the air inlet unit 1 and the corresponding area to be detected is often longer, the air inlet unit 1 is difficult to be directly communicated to the area to be detected, and therefore, four pipe connecting ports 51 are formed in the top of the shell 5 and correspond to the four air inlet units 1 respectively, and air inlets of the air inlet units 1 are formed in the corresponding pipe connecting ports 51 and are communicated to the corresponding area to be detected through long-distance pipelines.

The air inlet unit 1 comprises an air pipe 11 and a valve 12 arranged on the air pipe 11, the valve 12 controls the on-off states of the corresponding air pipe 11 and the detection unit 2, when the valve 12 is closed, the air pipe 11 cannot supply air to the detection unit 2, and only when the valve 12 is opened, the air pipe 11 can supply air to the detection unit 2. When all valves 12 are simultaneously in the open state, all air pipes 11 simultaneously feed air to the detection unit 2, and accordingly, the detection unit 2 performs mixed detection on the air fed by all air pipes 11. And only a single valve 12 or several valves 12 are opened, only a single gas of the area to be detected or several gases of the area to be detected enter the detection unit 2.

It will be appreciated that the detection unit 2 is configured to measure one or more types of data of the gas, for example, the application scenario of the multi-zone gas state detection device in this embodiment is fire detection, so as to detect the concentration of particles in the air. If a fire occurs in the area to be detected, the concentration of particles in the corresponding air may rise abnormally. Otherwise, if no fire occurs in the area to be detected, the particle concentration in the corresponding air is maintained only within a relatively low stable range. Correspondingly, if no fire occurs in all the areas to be detected, the particle concentration of the mixed gas in the detection unit 2 is maintained at a low level. If a fire occurs in one or more areas to be detected, the particle concentration of the mixed gas in the detecting unit 2 will be abnormally increased, or even the breakthrough threshold reaches a higher level, that is, if the particle concentration of the mixed gas in the detecting unit 2 is in the abnormal increasing process or the particle concentration is in a higher value in this embodiment, the detection result of the detecting unit 2 for the mixed gas may be considered as abnormal.

In other embodiments, if the multi-area gas state detection device is aimed at other application scenarios, the sensor types in the detection unit 2 may be replaced and/or increased, so that the detection unit 2 changes/increases the number types that can be detected. According to the kind of the actual detection value, if the detection result value of the mixed gas in the detection unit 2 is too high, too low, in the process of abnormal increase or abnormal decrease, it can be determined that the detection result of the detection unit 2 is abnormal. Therefore, the determination standard of whether the detection result of the mixed gas in the detection unit 2 is abnormal or not may be set by a person skilled in the art according to the actual requirement.

It can be seen that if the gas conveyed by one or more gas pipes 11 is abnormal, the detection result of the mixed gas by the final detection unit 2 is also abnormal, whereas if the detection result of the mixed gas by the detection unit 2 is abnormal, the gas conveyed by at least one gas pipe 11 is inevitably abnormal.

In the same way, taking the fire protection detection of this embodiment as an example, for some special areas to be detected, the particle concentration in the air is relatively high under the normal condition of the inside, and when the fire is in the initial stage, the particle concentration of the gas in the inside is not obviously improved, so that the particle concentration of the mixed gas in the detection unit 2 cannot be obviously improved immediately, and the delay judgment on the fire is possibly caused. For this reason, in other embodiments, the detecting unit 2 may also detect the concentration of the toxic and harmful gas in the mixed gas, and determine whether the fire occurs in the area to be detected based on whether the concentration of the toxic and harmful gas in the mixed gas is abnormally increased as a standard, independently or in combination with the value and the variation trend of the concentration of the particles, so as to more timely detect the fire. Of course, this is adjustable by a person skilled in the art according to the actual circumstances of the area to be detected.

In summary, when all the valves 12 connected to the detecting unit 2 are in the open state, the detecting unit 2 can determine whether any abnormality (i.e. fire condition in this embodiment) occurs in all the areas to be detected.

If the detection unit 2 detects that the mixed gas is abnormal, the region to be detected in which the abnormal state specifically occurs can be locked by the opening and closing operations of the respective valves 12.

For example, in the case of fire detection in this embodiment, only the valve 12 corresponding to the first area is opened, and the valves 12 corresponding to the second area, the third area and the fourth area are closed, and the detection unit 2 can detect the gas in the first area alone at this time, and determine whether a fire occurs in the first area by identifying whether the particle concentration of the gas in the first area exceeds the standard or increases too fast. By the method, the detection unit 2 can sequentially and independently detect the particle concentration of the gas in the second, third and fourth areas by sequentially opening only the valve 12 corresponding to the second area, only the valve 12 corresponding to the third area and only the valve 12 corresponding to the fourth area, so as to identify the specific areas in the first, second, third and fourth areas, which have the fire.

In addition to locking the area to be detected where a fire occurs by the above-described scheme of opening only one valve 12, the area to be detected where a fire occurs may be locked by closing only a number of valves 12. Specifically, the detection unit 2 of the present embodiment acquires gas at approximately the same flow rate from each of the regions to be detected with which it is in the on state, and thus the particle concentration detected by the detection unit 2 is an average of the particle concentrations of the air of each of the regions to be detected with which it is in the on state, and the particle concentrations in the normal state of each of the regions to be detected are substantially the same. When the four valves 12 are opened, the particle concentration detected by the detection unit 2 is an average value of the particle concentrations of the air in the four areas to be detected, and at this time, the detection unit 2 detects an abnormality in the particle concentration. Then, the valves 12 corresponding to the first area and the second area are opened, the valves 12 corresponding to the third area and the fourth area are closed, the detection unit 2 detects the gas mixture of the first area and the second area, and the particle concentration of the air detected by the detection unit 2 is the average value of the particle concentrations of the air in the first area and the second area. If the concentration of particles detected by the detecting unit 2 is increased rapidly compared with the concentration of particles detected by the detecting unit before the valves 12 corresponding to the third area and the fourth area are closed, it is indicated that at least one of the first area and the second area has a fire, and then by closing the valve 12 corresponding to the first area or the second area, the change of the detection value of the detecting unit 2 is observed, and whether the fire occurs in the first area or/and the second area can be further locked. For example, after the valve 12 corresponding to the first area is closed, the detecting unit 2 only detects the particle concentration of the air in the second area, so that whether the second area has a fire can be directly judged, and after the particle concentration of the air in the second area is obtained, the particle concentration of the air in the first area can be reversely deduced by using the previously obtained average value of the particle concentrations of the air in the first area and the air in the second area, so as to judge whether the first area has a fire.

Therefore, all valves 12 are controlled through a plurality of different opening and closing schemes, and specific areas to be detected with abnormality can be locked by utilizing mutual comparison and reference among detection results. The specific opening and closing scheme can be selected by a person skilled in the art according to actual needs.

In summary, the multi-region gas state detection device of the embodiment can realize gas detection of all the regions to be detected in the non-abnormal state and lock the regions to be detected in the abnormal state, thereby meeting the normal gas detection requirement. Meanwhile, the number of the detection units 2 is always only one, and the number of the detection units cannot be increased along with the increase of the areas to be detected, so that the cost increase of the whole multi-area gas state detection device caused by the increase of the number of the areas to be detected is restrained.

In addition, the multi-zone gas state detection device of the present embodiment further includes a control board, all the valves 12 are solenoid valves and all are electrically connected to the control board, the detection unit 2 is also electrically connected to the control board, and the control board controls the on-off states of the valves 12 according to signals sent by the detection unit 2. It should be understood that, the method for determining the abnormal state by the detection unit 2 and the control strategy of the control board on the valve 12 can be implemented by existing programs, and only the corresponding parameters in the running process of the program need to be given physical meaning according to the actual application scenario, so the method is not understood as a part which specifically contributes to the prior art.

Preferably, the trachea 11 comprises a main tube 111 and a branch tube 112, and an air inlet of the branch tube 112 is communicated to the main tube 111. At this time, the air inlet of the main pipe 111 is the air inlet of the air pipe 11, and the air inlet of the main pipe 111 is located at the pipe connecting port 51 and is communicated to the corresponding area to be detected through a long-distance pipeline, so that the main pipe 111 is used for acquiring the air from the area to be detected, and two air outlets of the air pipe 11 are respectively the air outlet of the main pipe 111 and the air outlet of the branch pipe 112. Wherein the valve 12 is located on the branch pipe 112 and the outlet of the branch pipe 112 is connected to the detection unit 2. The branch pipe 112 thus serves to extract part of the gas in the region to be detected in the main pipe 111 to be sent to the detection unit 2 for detection. The state of conduction is always maintained between the main pipe 111 and the region to be detected, so that the region to be detected is to send gas to the main pipe 111 in real time, and the state of conduction between the branch pipe 112 and the detecting unit 2 is controlled by the valve 12.

Air in the area to be detected at time t ₁ The departure time t is required to be at the time t ₂ When reaching the detection unit 2, the time t is the time when the air flows in the long-distance pipeline, and the flow rate of the air in the long-distance pipeline is generally fixed, so that t is generally a fixed value, and can be known ₁ +t＝t ₂ In which the length of the main pipe 111 and the branch pipe 112 is longShort, the time in which the air flows is negligible.

It will be appreciated that if the main pipe 111 is eliminated, air from the area to be detected is not directed to the detection unit 2 when the valve 12 is closed. The region to be detected at time t ₁ If the particle concentration of air at the time of canceling the main pipe 111 is a, at time t ₂ When the valve 12 is turned from open to closed, air with a particle concentration of a remains at the valve 12. Then time t is elapsed ₀ The valve 12 is switched from closed to open, and the air still having a particle concentration of a, i.e. the air corresponding to the region to be detected, is immediately supplied by the valve 12 to the detection unit 2 at time t ₁ Is a particle concentration of (2). In the present embodiment, however, since the main pipe 111 is always extracting gas from the region to be detected, the particle concentration of the air in the main pipe 111 corresponds to the region to be detected at time t when the valve 12 is turned from closed to open ₂ +t ₀ Particle concentration of air at-t, i.e. instant t ₁ +t ₀ The particle concentration of the air at the time, that is, the arrangement of the main pipe 111 allows the timeliness of detecting the data by the detecting unit 2 to be improved.

Optionally, the multi-zone gas state detecting device further includes a multi-way valve 3, the gas outlets of all branch pipes 112 are connected to the multi-way valve 3, the multi-way valve 3 is connected to the detecting unit 2, the multi-way valve 3 is installed on the housing 5, the branch pipes 112 are connected with the detecting unit 2 through the multi-way valve 3, the detecting unit 2 can be connected with all branch pipes 112 under the design condition of maintaining the existing single gas inlet, and extra modification of the detecting unit 2 is avoided.

Specifically, the detecting unit 2 includes a detecting box 23 and a sampling air pump 21, the sampling air pump 21 is located between the air outlet of the branch pipe 112 and the air inlet of the detecting box 23, the sampling air pump 21 extracts air from the corresponding branch pipe 112 to be sent to the detecting box 23, the particle concentration of the air is measured in the detecting box 23, and correspondingly, the air inlet of the sampling air pump 21 is the air inlet of the detecting unit 2, and the air outlet of the detecting box 23 is the air outlet of the detecting unit 2. In this embodiment, the sampling air pump 21 is connected to the multi-way valve 3 only through the first air pipe 211, and the connection to each branch pipe 112 is achieved.

The detection box 23 of the present embodiment is provided with a photoelectric smoke detector therein, thereby realizing detection of particle concentration. The principle of the photoelectric smoke detector is that the particles are agglomerated by forming a high-pressure state to the air in the detection box 23, the emitted light beams are scattered on the particles, and the concentration of the particles is calculated by the light sensation value measured by the emitted light beams. The photoelectric smoke detector is the prior art, and therefore will not be further described in this embodiment. In order to enable the air in the detection box 23 to form a high pressure state as quickly as possible, the detection unit 2 further comprises an exhaust valve 22, the exhaust valve 22 is connected to the air outlet of the detection box 23, and the air pressure value in the detection box 23 can be continuously increased as long as the exhaust valve 22 is closed so that the detection box 23 stops air outlet, and the sampling air pump 21 continuously supplies air into the detection box 23. And after the detection of the detection box 23 is completed, the exhaust valve 22 is opened, the gas in the detection box 23 is in a high-pressure state, so that the exhaust is facilitated, the sampling air pump 21 sends new air into the detection box 23 to flush and replace the original air, then the exhaust valve 22 is closed, and the detection box 23 can perform the next detection. Of course, the detection frequency of the photoelectric smoke detector is very high, and the single detection process is only tens of milliseconds, so that the photoelectric smoke detector can be monitored approximately in real time.

It will be appreciated that in other embodiments, when the detection box 23 detects other parameters, although the photoelectric smoke detector may be replaced by other sensors, a high pressure state still needs to be formed in the detection box 23, so that the opening and closing process of the exhaust valve 22 can also be matched with other sensors to implement other parameter measurement processes of the air.

In order to enable the detection results of the detection cartridge 23 at different times to be compared with each other, the measurement timing of the light sensation value needs to be kept under a fixed air pressure value condition inside the detection cartridge 23. A pressure sensor is thus provided in the detection cartridge 23, which is electrically connected to the sampling air pump 21. When the air pressure sensor detects that the air pressure in the detection box 23 reaches a set value, a signal is sent to the sampling air pump 21, and the sampling air pump 21 stops delivering air, so that the detection box 23 is prevented from being further increased.

Of course, when the air pressure in the detection box 23 reaches the set value, in order to allow enough time for the photoelectric smoke detector to detect the light sensation value, the air pressure in the detection box 23 needs to maintain the set value for a short period of time, and accordingly, the air in the detection box 23 needs to be prevented from flowing back into the first air pipe 211, so as to ensure that the total amount of the air between the sampling air pump 21 and the detection box 23 and in the detection box 23 is unchanged. Therefore, the sampling air pump 21 of the present embodiment is integrated with a check valve, which automatically realizes the function of preventing the air from flowing back into the first air pipe 211 after the sampling air pump 21 is turned off. The sampling air pump 21 integrated with the check valve is already known in the art, and therefore, the detailed description of the information about the specific specification of the sampling air pump 21 is omitted.

In other embodiments, the detection unit 2 further comprises a one-way valve between the sampling air pump 21 and the air inlet of the detection cartridge 23 as a degradation equivalent of the present embodiment. At this time, the sampling air pump 21 and the check valve need to be controlled separately to maintain the air pressure in the detection case 23.

The multi-zone gas state detection device of the present embodiment further includes a power source 4, and the gas outlets of all the main pipes 111 are connected in parallel to the power source 4. The power source 4 provides power for each main pipe 111 to draw air from the corresponding area to be inspected. The power source 4 in this embodiment is an air suction fan, but may be an air pump in other embodiments. The power source 4 can be arranged on the shell 5, so that the position between the main pipe 111 and the power source 4 is relatively fixed, and the occurrence of loosening of the relative movement of the main pipe 111 and the power source 4 is reduced.

In some embodiments, the gas exiting power source 4 may contain hazardous materials, and thus the gas exiting power source 4 may need to be centrally disposed of. In this embodiment, therefore, an exhaust pipe 41 is provided at the air outlet of the power source 4, and the exhaust pipe 41 is connected to some gas treatment devices. Therefore, the air outlet of the detection unit 2, i.e. the air outlet of the detection box 23, is communicated to the exhaust pipe 41, and is uniformly processed by the gas processing device behind the exhaust pipe 41, so that the additional gas processing device is not required, and the gas processing cost is reduced.

In this embodiment, the air outlet of the detection case 23 is connected to the exhaust pipe 41 through the second air pipe 2321, and the exhaust valve 22 is provided on the second air pipe 2321.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (11)

1. The utility model provides a multizone gas state detection device, its characterized in that includes a detecting element and a plurality of unit that admits air, all the unit that admits air is connected to the detecting element, the unit that admits air includes the trachea and installs the valve on the trachea, valve control corresponds the trachea with the break-make state of detecting element.

2. The multi-zone gas state detection device of claim 1, wherein the gas pipe comprises a main pipe and a branch pipe, the gas inlet of the branch pipe is communicated to the main pipe, the valve is located on the branch pipe, and the gas outlet of the branch pipe is communicated to the detection unit.

3. The multi-zone gas state detection device of claim 2, further comprising a multi-way valve to which the gas outlets of all of the branches are connected, the multi-way valve being connected to the detection unit.

4. The multi-zone gas state detection device of claim 2, wherein the detection unit comprises a detection box and a sampling gas pump, the sampling gas pump being located between the gas outlet of the manifold and the gas inlet of the detection box.

5. The multi-zone gas state detection device of claim 4, wherein the detection unit further comprises a vent valve connected to a gas outlet of the detection cartridge.

6. The multi-zone gas state detection device of claim 5, wherein the sampling gas pump is integrated with a check valve.

7. The multi-zone gas state detection device of claim 6, wherein a pressure sensor is disposed within the detection cartridge, the pressure sensor being electrically connected to the sampling gas pump.

8. The multi-zone gas state detection device of claim 7, wherein a photoelectric smoke detector is disposed within the detection cartridge.

9. The multi-zone gas state detection device of claim 5, wherein the detection unit further comprises a one-way valve between the sample gas pump and the gas inlet of the detection cartridge.

10. The multi-zone gas state detection device of claim 2, further comprising a power source to which all of the primary pipe gas outlets are connected in parallel.

11. The multi-zone gas state detection device of claim 10, wherein an exhaust pipe is provided at the gas outlet of the power source, and the gas outlet of the detection unit is communicated to the exhaust pipe.