CN217156459U - Dangerous gas detection device for fire rescue scene - Google Patents

Abstract

The utility model relates to a gaseous detection technology field provides a dangerous gas detection device towards conflagration rescue scene, through general the device is in being surveyed the environment, target gas gets into the filter through the air inlet that is located on the high temperature resistant casing, then reach each gas sensor and each test paper reactor, gas sensor produces the signal of telecommunication through response target gas's kind and concentration, and give information processing module with signal of telecommunication, the color signal that test paper reactor will read changes the signal of telecommunication into and gives information processing module, information processing module is through the calculation processing to the signal of telecommunication, obtain the calculated result, and send the instruction that corresponds to early warning module, corresponding early warning is made according to the instruction to early warning module. The utility model provides an in the correlation technique detect that the gas kind is not enough, the classification is inaccurate, high temperature resistance is poor, stability and reliability are low to and risk alarm strategy, categorised hierarchical instruction and tactics are related indefinite problem.

Description

Dangerous gas detection device for fire rescue scene

Technical Field

The utility model relates to a gaseous detection technology field, concretely relates to dangerous gaseous detection device towards conflagration rescue scene.

Background

The fire disaster is one of the most harmful disasters in the current human society, and the fire disaster often causes great casualties and huge property loss. The most harmful factor to people is a large amount of toxic and harmful smoke generated by burning in a fire scene, and according to statistics, the number of people who die due to inhalation of poisoning by fire smoke accounts for about 75 percent of the total number of people who die due to fire. The detection method has important significance in implementing toxic and harmful gas detection in the fire accident rescue site.

Research shows that 15 gases such as carbon monoxide, hydrogen cyanide, hydrogen chloride and the like in smoke at the site of a fire accident are toxic and harmful gases with the highest lethality rate in the building fire accident. However, due to the lack of professional fire rescue and fire scene investigation gas detection equipment, the existing composite gas detector equipped by fire rescue teams cannot realize detection coverage of the toxic and harmful gases, only 4 to 6 gases can be detected, the detection spectrum is insufficient, the detector cannot be suitable for clearly-associated fire rescue tactical behaviors, and the operation safety and occupational safety protection of fire scene rescuers and fire scene investigation inspectors cannot be met.

The specific expression is that firstly, the high temperature resistance of the current detection equipment is poor, and detection components and parts are very easy to lose efficacy in a high-temperature environment, so that the measurement and early warning cannot be realized. Secondly, the current gas detector can not accurately measure the types of target gases, such as sulfur dioxide, chlorine, sulfide and other gases, so that the electrochemical sensor can receive similar indication signals, and the types of toxic gases can not be effectively measured. Thirdly, the stability and the sensitivity of the current gas detector are uneven, and failure early warning cannot be accurately sent out under the condition that a detection unit fails, so that the situation that the measurement error is too large and even fails is caused. Fourth, there is usually no backup measure when the detection unit fails, resulting in insufficient stability and reliability of the detection instrument.

SUMMERY OF THE UTILITY MODEL

In view of this, it is necessary to provide a gas detection apparatus capable of more accurately and effectively detecting the type and concentration of a hazardous gas under a high-temperature environment and in the presence of various hazardous gases, and realizing a hazard warning and a failure warning, and improving the stability and reliability of a detection instrument, aiming at the problems that the conventional gas detection instrument cannot accurately measure the type of a target gas and is prone to large measurement error or failure.

For reaching the utility model purpose, provide a dangerous gaseous detection device towards on-spot conflagration rescue, the device includes:

the gas sensor comprises a shell, a gas inlet, a filter, at least two gas sensors, an information processing module and an early warning module; the casing adopts high temperature resistant material to make, the air inlet run through set up in one side of casing, the filter gas sensor information processing module the early warning module set up in inside the casing, the inlet end of filter with the air inlet is connected, gas sensor with the end connection of giving vent to anger of filter, gas sensor with information processing module electric connection, the early warning module with information processing module electric connection.

Furthermore, the device also comprises a pumping module, a multi-way connector and a pipeline; the multi-way connector comprises at least three interfaces, the air inlet, the filter, the pumping module and the multi-way connector are sequentially connected through the pipeline respectively, and the gas sensor is connected with the multi-way connector through the pipeline respectively.

Further, the device still includes, a plurality of test paper reactors, a plurality of chemical detection test paper, the test paper reactor respectively through the pipeline with the connector that leads to is connected, chemical detection test paper set up in the inside of test paper reactor, chemical detection test paper adopts two kinds at least different.

Furthermore, the number of the test paper reactors is at least two; the device also comprises at least two air valves, wherein the air valves are respectively arranged on the pipeline between the test paper reactor and the multi-way connector and are respectively and electrically connected with the information processing module.

Further, the information processing module comprises a failure detection unit and a control unit, the failure detection unit is electrically connected with the gas sensor and the test paper reactor respectively and is used for detecting whether the gas sensor and/or the chemical detection test paper fails, and the control unit is electrically connected with the gas valve respectively and is used for sending an instruction to the gas valve.

Further, the apparatus further comprises a liquid insulation layer; the liquid heat insulation layer is arranged on the inner wall of the shell and comprises a heat insulation layer bag and cooling liquid, and the cooling liquid is hermetically arranged in the heat insulation layer bag.

Further, the gas sensor includes: electrochemical sensors, catalytic combustion sensors, photoionization sensors;

or, an electrochemical sensor, a semiconductor sensor, a photoionization sensor.

Further, the gas sensor adopts six gas sensor combinations, and the six gas sensor combinations adopt three electrochemical sensors, an infrared sensor, a catalytic combustion sensor and a photoionization sensor; or the six gas sensor combinations adopt six gas sensor combinations of four electrochemical sensors, one catalytic combustion sensor and one photoionization sensor, and the six gas sensors are interchangeable in position.

Further, the device still includes wireless data transmission module, orientation module and antenna, wireless data transmission module, orientation module, antenna respectively with information processing module electric connection just all set up in inside the casing, wireless data transmission module is used for sending transmission data to remote terminal, wireless data transmission module operating frequency is 410 ~ 510MHz, orientation module is used for right the device carries out satellite positioning and/or inertial navigation location.

Further, the early warning module comprises: the indicating lamps, the buzzer and the vibrator are respectively and electrically connected with the information processing module;

the device further comprises: the device comprises a display module, a setting module, a mobile power supply and an exhaust hole; the utility model discloses a portable electronic device, including casing, display module, button, rechargeable battery group, portable power source, exhaust hole, the outer port of air inlet set up in one side of casing just the inner space of air inlet links to each other with outside atmosphere, display module includes the display screen, the display screen set up in the outside of casing, set up the module including the button, the button set up in the outside of casing, portable power source includes rechargeable battery group and charging contact, rechargeable battery group set up in inside the casing, charging contact run through set up in the outside of casing, display module set up the module portable power source respectively with information processing module electric connection, the exhaust hole run through set up in the casing and through the pipeline respectively with gas sensor connects.

The technical scheme provided by the embodiment of the application at least has the following beneficial technical effects:

the utility model provides a dangerous gas detection device towards conflagration rescue scene compares with correlation technique, and high temperature resistant ability can be more under the multiple dangerous gas existence condition, and is more high temperature resistant, more can accurately inspect out dangerous gas's kind and concentration to realize dangerous early warning and inefficacy early warning, improved detection device's stability and reliability simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of a hazardous gas detection device facing a fire rescue scene according to an embodiment of the present application;

FIG. 2 is a schematic diagram of another gas detection apparatus including a getter pump according to an embodiment of the present application;

FIG. 3 is a schematic diagram of another gas detection device including a test strip reactor according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a combined test strip provided in an embodiment of the present application;

FIG. 5 is a schematic diagram of another gas detection device including a gas valve according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of another gas detection apparatus including a liquid thermal insulation layer according to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another gas detection apparatus including a wireless data transmission module and a positioning module according to an embodiment of the present application;

fig. 8 is a schematic structural outline view of a hazardous gas detection device facing a fire rescue scene according to an embodiment of the present application;

reference numerals:

the device comprises an air inlet-1, a filter-2, a pumping module-3, a multi-way connector-4, at least two gas sensors-5, an information processing module-6, an early warning module-7, a test paper reactor-8, chemical detection test paper-9, an air valve-10, a wireless data transmission module-11, a positioning module-12, an indicator light-13, a buzzer-14, combined test paper-15, a shell-16, an exhaust hole-17, a display screen-18, a key-19 and a charging contact-20.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The terms "first," "second," and the like in the description and in the claims and in the drawings of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged as appropriate in order to facilitate the embodiments of the invention described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps S or elements is not necessarily limited to those steps S or elements expressly listed, but may include other steps S and elements not expressly listed or inherent to such process, method, article, or apparatus.

In order to make the technical solution of the present invention better understood, the embodiments of the present invention are described below in detail and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

Examples

The embodiment of the application provides a dangerous gas detection device towards fire rescue scene, as shown in fig. 1, includes:

the gas sensor comprises a shell 16, a gas inlet 1, a filter 2, at least two gas sensors 5, an information processing module 6 and an early warning module 7;

casing 16 adopts high temperature resistant material to make, air inlet 1 run through set up in one side of casing 16, filter 2 gas sensor 5 information processing module 6 early warning module 7 set up in inside the casing 16, the inlet end of filter 2 with air inlet 1 is connected, gas sensor 5 with the end connection of giving vent to anger of filter 2, gas sensor 5 with information processing module 6 electric connection, early warning module 7 with information processing module 6 electric connection.

It should be noted that, preferably, the housing 16 is made of high-strength engineering plastic or composite anti-skid rubber; the filter element of the filter 2 is made of expanded polytetrafluoroethylene material and is used for filtering larger particles in the air so as to prevent dust from polluting equipment such as the pumping module 3, the pipeline, the multi-way connector 4, the gas sensor 5 and the like, and further avoid the condition that the measurement of the detection device is inaccurate or fails; the pumping module 3 adopts an electric air pump, the pipeline and the multi-way connector 4 are made of materials with strong corrosion resistance, such as rubber, plastic and the like, so that the reliability of the detection device can be improved; the gas sensor 5 includes at least two types of sensors, and includes sensors that can recognize toxic gas and flammable gas, respectively, and can measure the concentrations of the toxic gas and the flammable gas; preferably, the gas sensor 5 further includes a sensor that can measure the oxygen concentration; preferably, the gas sensor 5 comprises a gas sensor 5 body and a sensor base, the sensor body and the sensor base are detachably mounted, and the positions of the at least two gas sensors 5 can be freely set according to actual needs. The gas sensor is arranged in a closed space, and the closed space can be made into a box-shaped object by adopting plastics, so that the external gas which does not pass through the filter is prevented from entering the gas sensor, the pollution is caused, and the detection effect is influenced.

Optionally, the information processing module 6 includes a driving circuit board and a microprocessor, and the microprocessor is disposed on the driving circuit board; the microprocessor comprises embedded software, and the embedded software is used for enabling the microprocessor to read the input induction signals, calculate results and send instruction signals according to a preset software program.

The early warning module 7 comprises a danger early warning unit and an invalidation early warning unit, the danger early warning unit is used for early warning the leakage of dangerous gas, and the invalidation early warning unit is used for early warning the invalidation condition of the detection device. Preferably, the danger early warning unit comprises a primary early warning unit and a secondary early warning unit, and is used for setting early warnings with different danger levels according to the types and/or concentrations of different dangerous gases. The danger early warning unit may also include two or more levels of early warning units, which are not limited herein. Preferably, the early warning module sets two-stage detection alarm for toxic gas detection by taking an IDLH value of 'immediately life threatening or healthy concentration' as a judgment reference; for oxygen detection, two-stage detection alarm is arranged at the anoxic side.

In the specific implementation process, the detection device is located in the detected environment, the target gas automatically diffuses through the gas inlet 1, enters the filter 2 to filter out dust and impurities in the air, then passes through the pumping module 3 and the multi-way connector 4, and then reaches each gas sensor 5, the gas sensors 5 generate electric signals by sensing the type and concentration of the target gas, and send the electric signals to the information processing module 6, the information processing module 6 obtains a calculation result by calculating and processing the electric signals, and sends corresponding instructions to the early warning module 7, the early warning module 7 gives corresponding early warning according to the instructions, for example, when no dangerous gas is detected, the early warning module 7 gives a prompt for safety, when toxic gas is detected, the early warning module 7 gives a prompt for toxicity, and gives a primary early warning or a secondary warning according to the concentration of the toxic gas, when flammable gas is detected, the early warning module 7 prompts flammability and makes a first-stage early warning or a second-stage early warning according to the concentration of flammable gas.

Therefore, compared with the related technology, the embodiment of the application has stronger high-temperature resistance, can more accurately identify the combustible gas and the toxic gas under the condition of existence of various dangerous gases, realizes dangerous early warning and failure early warning, and simultaneously improves the stability and the reliability of the detection device.

In a preferred embodiment, the device further comprises a pumping module (3), a multi-way connector (4), a pipe; the multi-way connector (4) comprises at least three interfaces, the air inlet (1), the filter (2), the pumping module (3) and the multi-way connector (4) are sequentially connected through the pipelines respectively, and the gas sensor (5) is connected with the multi-way connector (4) through the pipelines respectively, as shown in figure 2.

In this application embodiment, through the setting of pumping the module and leading to the connector more, can accelerate the speed that the gas under test gets into inspection device to improve measurement of efficiency, and under the low concentration hazardous gas condition, possess higher sensitivity.

In a preferred embodiment, the gas sensor 5 comprises an oxygen sensor for detecting the oxygen content in the gas, with a decision threshold of 250 ppm.

Specifically, since oxygen is required for combustion of the material, if there is oxygen leakage in the environment to be tested, the possibility of fire is increased, and if there is combustible gas in the air, the explosion is very likely to occur, so that it is necessary to detect the oxygen leakage at the fire site.

In the embodiment of the application, the oxygen sensor is adopted to detect the oxygen concentration, so that the application range of the detection device can be effectively enlarged, and the safety and the reliability are improved.

In a preferred embodiment, the detection apparatus further includes a plurality of test paper reactors 8 and a plurality of chemical detection test paper 9, the test paper reactors 8 are respectively connected to the multi-way connector 4 through pipes, the chemical detection test paper 9 is disposed inside the test paper reactors 8, and the chemical detection test paper 9 is of at least two different types, as shown in fig. 3.

It should be noted that the chemical detection test paper 9 is a common chemical detection test paper 9, and includes: the gas detection device comprises at least two types of test paper, namely pH test paper, starch potassium iodide test paper, red litmus test paper, blue litmus test paper, lead acetate test paper, fuchsin test paper, phenolphthalein test paper and the like, wherein the pH test paper is used for roughly detecting the acidity and alkalinity of a target gas, the starch potassium iodide test paper is used for detecting strong oxidizing substances and content in the target gas, the red litmus test paper is used for detecting acidic substances and acidity and alkalinity in the target gas, the blue litmus test paper is used for detecting acidic substances and acidity and alkalinity of the target gas, the lead acetate test paper is used for detecting sulfides and concentration in the target gas, the fuchsin test paper is used for detecting bleaching substances and concentration of the target gas, and the phenolphthalein test paper is mainly used for detecting ammonia and concentration of the target gas.

The test strip reactor 8 includes a color reader for scanning the chemical detection device and reading the color thereof.

In the specific implementation process, pump module 3 is pumped in the start, the target gas passes through air inlet 1, filter 2, pump module 3, then reach each gas sensor 5 and each test paper reactor 8 through the pipeline of each connector on the multi-pass connector 4, gas sensor 5 produces the signal of telecommunication through the kind and the concentration of response target gas, and send the signal of telecommunication to information processing module 6, test paper reactor 8 converts the colour signal who reads into the signal of telecommunication and sends information processing module 6, information processing module 6 is through the calculation processing to the signal of telecommunication, obtain the calculated result, and send corresponding instruction to early warning module 7, early warning module 7 makes corresponding early warning according to this instruction.

Therefore, in the embodiment of the application, compared with the prior art, the hazardous gas detection device for the fire rescue scene has at least the following technical effects: through adopting a plurality of test paper reactors 8, a plurality of chemical detection test paper 9 to detect target gas, realize under the existence condition of multiple hazardous gas, more high temperature resistant, more can accurately inspect out hazardous gas's kind and concentration, improved detection device's stability and reliability simultaneously, promoted user experience.

In a pre-selected embodiment, the chemical test strip 9 is a combination strip 15, and the combination strip 15 is synthesized using at least two different types of chemical test strips 9, as shown in FIG. 4.

Specifically, the combined test paper 15 is synthesized by using at least two different kinds of chemical detection test paper 9, for example, 5 kinds of test paper, such as pH test paper, starch potassium iodide test paper, lead acetate test paper, magenta test paper, and phenolphthalein test paper, are combined into one combined test paper 15, wherein each part occupies one fifth. Wherein, the test paper reactor 8 comprises 5 color readers; the color reader sequentially aligns each of the chemical test strips 9 in a predetermined order, scans and reads the color thereof.

In the embodiment of the application, the chemical detection test paper 9 of various types is combined into the combined test paper 15, so that the test paper reactor 8 can be effectively utilized, the test paper reactor 8 can be used as few as possible, the redundancy of the device is simplified, and the cost can be saved while the efficiency is ensured.

In a preferred embodiment, the number of the test paper reactors 8 is at least two; the device further comprises at least two air valves 10, wherein the air valves 10 are respectively arranged on the pipelines between the test paper reactor 8 and the multi-way connector 4, and the air valves 10 are respectively electrically connected with the information processing module 6, as shown in fig. 5.

In the specific implementation process, the chemical detection test paper 9 is used as disposable equipment, so that failure is easy to occur, and in order to use the detection device for multiple times in a dangerous chemical accident, a spare chemical detection test paper 9 needs to be designed. Therefore, an air valve 10 is respectively arranged on the pipeline between each test paper reactor 8 and the multi-way connector 4, the air valve 10 is in a normally closed state, and the air valves 10 are respectively electrically connected with the information processing module 6. After receiving a signal that a certain chemical detection test paper 9 fails, the information processing module 6 sends an instruction for opening the air valve 10 to the next air valve 10 according to a preset mode, the air valve 10 is opened after receiving the instruction, the corresponding test paper reactor 8 starts to work, and after the test paper reactor 8 fails, the previous step is repeated, so that the other standby test paper reactor 8 starts to work.

In the embodiment of the application, the mode that at least two test paper reactors 8 are adopted and the air valve 10 is arranged on the pipeline between each test paper reactor 8 and the multi-way connector 4 respectively can improve the use convenience and reliability of the detection device and improve the user experience.

In a preferred embodiment, the information processing module 6 includes a failure detection unit and a control unit, the failure detection unit is electrically connected to the gas sensor 5 and the test paper reactor 8 respectively and is configured to detect whether the gas sensor 5 and/or the chemical test paper 9 fails, and the control unit is electrically connected to the gas valve 10 respectively and is configured to send an instruction to the gas valve 10.

In the specific implementation process, the chemical detection test paper 9 is used as disposable equipment, and the stability and corrosion resistance of the gas sensor 5 are insufficient, so that the chemical detection test paper 9 is easy to fail, and in order to use the detection device for multiple times in a dangerous chemical accident, a spare chemical detection test paper 9 needs to be designed, and a user needs to be prompted to replace the gas sensor 5 with a new one. Therefore, an air valve 10 is respectively arranged on the pipeline between each test paper reactor 8 and the multi-way connector 4, the air valve 10 is in a normally closed state, and the air valves 10 are respectively electrically connected with the information processing module 6. After receiving a signal that a certain chemical detection test paper 9 fails, the information processing module 6 sends an instruction for opening the air valve 10 to the next air valve 10 according to a preset mode, the air valve 10 is opened after receiving the instruction, the corresponding test paper reactor 8 starts to work, and after the test paper reactor 8 fails, the previous step is repeated, so that the other standby test paper reactor 8 starts to work. When the failure detection unit of the information processing module 6 detects that the gas sensor 5 fails, a failure instruction of the gas sensor 5 is sent to the early warning module 7, and a user is prompted to replace the gas sensor 5 with a new one.

In the embodiment of the application, the information processing module 6 adopts a combined mode of the failure detection unit and the control unit, so that the use safety, convenience and reliability of the detection device can be improved, and the user experience is improved.

In a preferred embodiment, a liquid insulation layer 22; the liquid heat insulation layer 22 is arranged on the inner wall of the shell and comprises a heat insulation layer 22 bag and cooling liquid, and the cooling liquid is hermetically arranged in the heat insulation layer 22 bag, as shown in fig. 6.

Specifically, the thermal insulation layer 22 can be made of a metal material to improve heat transfer efficiency, and preferably, the liquid thermal insulation layer 22 includes a cooling liquid circulation device to improve heat absorption efficiency.

In the embodiment of the application, the liquid heat insulation layer is added, so that the high temperature resistance of the detection device at high temperatures such as a fire scene can be effectively prevented, the performance reduction or failure of internal equipment due to high temperature can be prevented, and the reliability of the detection device is improved.

In a preferred embodiment, the gas sensor 5 comprises: electrochemical sensors, catalytic combustion sensors, photoionization sensors.

Specifically, the electrochemical sensor comprises a constant potential electrolytic sensor and a galvanic cell type gas sensor 5, wherein the constant potential electrolytic sensor ionizes a gas to be detected under a specific electric field, and the gas concentration is measured by flowing electrolytic current, so that the sensor has high sensitivity, changes the potential-selectable detection gas and plays an important role in detecting toxic gases; the galvanic cell type gas sensor 5 is a cell composed of a Pt-Pb or Ag-Pb electrode in a KOH electrolyte solution, has been successfully used for detecting oxygen, and has high sensitivity.

The catalytic combustion sensor utilizes the thermal effect principle of catalytic combustion, a detection element and a compensation element are paired to form a measuring bridge, under a certain temperature condition, combustible gas generates flameless combustion under the action of the surface of a carrier of the detection element and a catalyst, the temperature of the carrier rises, and the platinum wire resistance in the carrier correspondingly rises, so that the balance bridge is unbalanced, and an electric signal in direct proportion to the concentration of the combustible gas is output. By measuring the magnitude of the resistance change of the platinum wire, the concentration of the combustible gas is known. The method is mainly used for detecting the combustible gas, has the advantages of good output signal linearity, reliable index and low price, and can not generate cross infection with other non-combustible gases.

The photoionization sensor PID is a gas detector with high sensitivity and wide application based on photoionization technology, can detect volatile organic compounds with extremely low concentration ranging from 10ppb to 10000ppm, has the advantages of portability, small size, high precision, high resolution, quick response, high real-time property and safety, continuous test and the like compared with the traditional detection method, provides real-time information feedback for workers, and ensures the safety of the workers.

Preferably, the gas sensor 5 employs 3 electrochemical sensors, 1 catalytic combustion sensor and 1 photoionization sensor. The electrochemical sensor includes a first electrochemical sensor for detecting oxygen and its concentration change information, a second electrochemical sensor for detecting concentration change information of hydrogen halides such as hydrogen fluoride, sulfur dioxide, chlorine, hydrogen chloride, etc., sulfides, and chlorides, and a third electrochemical sensor for detecting concentration change information of cyanides such as carbon monoxide, hydrogen cyanide, etc., nitrogen oxides, a catalytic combustion sensor for detecting concentration change information of combustible gases such as methane, propane, gasoline, etc., and a photoionization sensor 6 for detecting concentration change information in response to organic volatiles.

In a preferred embodiment, the gas sensor 5 comprises: electrochemical sensors, semiconductor sensors, photoionization sensors.

Preferably, the gas sensor 5 adopts 4 electrochemical sensors, 1 semiconductor sensor and 1 photoionization sensor, and the semiconductor sensor utilizes a semiconductor gas sensitive element as the gas sensor 5 of the sensitive element, is widely applied to combustible gas leakage detection of families and factories, and is suitable for detection of combustible gases such as methane, liquefied gas, hydrogen, gasoline and the like.

In the embodiment of this application, adopt multiple gas sensor 5 to carry out the mode of combination, realize under the multiple hazardous gas existence condition, examine out hazardous gas's kind more accurately, increase the coverage who detects hazardous gas kind, improved the broad spectrum nature of gaseous detection.

In a preferred embodiment, the gas sensor 5 employs a six gas sensor combination employing three electrochemical sensors, an infrared sensor, a catalytic combustion sensor and a photoionization sensor.

In the embodiment of the present application, the electrochemical sensor 5 includes first, second and third electrochemical sensors, the first electrochemical sensor is used for detecting and responding to the oxygen concentration variation information of the fire accident site, the second electrochemical sensor is used for detecting and responding to the concentration variation information of gases such as carbon monoxide, hydrogen cyanide, nitrogen oxide, hydrogen sulfide, acrylonitrile, etc. generated by the combustion of the fire accident site, the third electrochemical sensor is used for detecting and responding to the concentration variation information of gases such as sulfur dioxide, hydrogen chloride, hydrogen fluoride, hydrogen bromide, etc. generated by the combustion of the fire accident site, the infrared sensor is used for detecting and responding to the concentration variation information of carbon dioxide generated by the combustion of the fire accident site, and the catalytic combustion sensor is used for detecting and responding to the concentration variation information of carbon monoxide, acrolein, formaldehyde, ammonia, hydrogen sulfide, etc. generated by the combustion of the fire accident site, The photoionization sensor is used for detecting the concentration change information of organic volatile matters such as nitrogen oxides, acrolein, ammonia gas, hydrogen sulfide and phenol and combustion promoters such as gasoline, methanol and ethanol generated by field combustion in response to fire accidents.

Preferably, the gas sensor 5 adopts six gas sensor combinations of four electrochemical sensors, one catalytic combustion sensor and one photoionization sensor, and the six gas sensors are interchangeable in position.

In the embodiment of the application, the sensors of six different types are combined, so that the detection of gases of different types and different properties is realized, and the broad-spectrum property and the reliability of the detection device are improved.

In a preferred embodiment, the detection device further includes a wireless data transmission module 11, a positioning module 12 and an antenna, the wireless data transmission module 11, the positioning module 12 and the antenna are respectively electrically connected to the information processing module 6 and are all disposed inside the housing 16, the wireless data transmission module 11 is configured to send transmission data to a remote terminal, an operating frequency band of the wireless data transmission module 11 is 410-510 MHz, and the positioning module 12 is configured to perform satellite positioning and/or inertial navigation positioning on the device, as shown in fig. 7.

The satellite positioning adopts a positioning mode of GPS and/or Beidou satellite positioning.

In the embodiment of the application, by adopting the wireless data transmission module 11 and a special working frequency band, the remote sharing and management of data and the real-time remote monitoring of a target area are facilitated, the operation risk of personnel is reduced, the transmission interference is reduced, and the user experience is improved.

In a preferred embodiment, specifically, the positioning module 12 adopts a positioning mode of GPS/beidou satellite positioning, and includes an antenna device for sending and receiving positioning data.

In the embodiment of the application, the positioning module 12 is used for satellite positioning, so that the position of a user can be confirmed in real time, the dangerous area can be conveniently identified and remotely positioned, and the user experience is improved.

In a preferred embodiment, the early warning module 7 includes: the information processing module 6 comprises a plurality of indicating lamps 13, a buzzer 14 and a vibrator, wherein the indicating lamps 13, the buzzer 14 and the vibrator are respectively and electrically connected with the information processing module;

the detection device further comprises a shell 16, a display module, a setting module, a mobile power supply and an exhaust hole 17; the outer port of air inlet 1 set up in one side of casing 16 just the inner space of air inlet 1 links to each other with outside atmosphere, display module includes display screen 18, display screen 18 set up in the outside of casing 16, it includes button 19 to set up the module, button 19 set up in the outside of casing 16, portable power source includes rechargeable battery group and charging contact 20, rechargeable battery group set up in inside the casing 16, charging contact 20 run through set up in the outside of casing 16, display module set up the module portable power source respectively with information processing module 6 electric connection, exhaust hole 17 run through set up in casing 16 and through the pipeline respectively with gas sensor 5 connects.

Fig. 8 is a schematic structural diagram of an external shape of a hazardous gas detection device facing a fire rescue scene according to an embodiment of the present application, as shown in fig. 8.

Specifically, the indicator light 13 includes a safety indicator light, a flammable gas indicator light, a toxic gas indicator light, a failure indicator light, and an early warning level indicator light. When inflammable gas and toxic gas are not detected, the safety indicator lamp is turned on; when flammable gas is detected, the flammable gas indicator light is on; when toxic gas is detected, the toxic gas indicator lamp is turned on, and when one or more of the gas sensors 5 send a fault, the failure indicator lamp is turned on; the early warning level indicating lamp comprises a first-level early warning indicating lamp and a second-level early warning indicating lamp, and when the type of the preset gas is detected or the preset concentration is reached, the early warning level indicating lamp is turned on correspondingly.

The buzzer 14 and the vibrator respond correspondingly according to preset conditions, for example, when the detection is completed, the buzzer 14 generates two different sounding sounds according to the detected toxic gas and flammable gas, and generates different decibel levels according to different early warning levels.

Wherein, early warning module 7 is through the mode that sets up pilot lamp, bee calling organ 14, vibrator, is convenient for use under the dim or can't carry out visual environment of light at the user, has promoted security and user experience.

It should be noted that the filter 2, the pumping module 3, the multi-way connector 4, the at least two gas sensors 5, the information processing module 6, the early warning module 7, the pipeline, the wireless data transmission module 11, the positioning module 12, the vibrator, the display module, the setting module, the rechargeable battery pack and other devices are all arranged inside the housing 16 and used for supporting and protecting the devices; the content displayed by the display module comprises information such as detected gas type and concentration value, current early warning level, failure early warning, settable options, current electric quantity and the like; options which can be set by the setting module comprise a working mode, a gas sensor 5 option, a test paper reactor 8 option, a timing on-off option, an information remote transmission option, a satellite positioning option and the like; the exhaust holes 17 are set to facilitate the exhaust of the detected tail gas, so that the internal air pressure of the device is balanced.

Preferably, the display module indicates "safe" when not in the alarm state; when the alarm is in a first-level alarm state, the indicator light 13, the buzzer 14 and the vibrator give out low-frequency light, sound and vibration prompts, and the display module indicates 'alert' to prompt a user to wear an air respirator for protection; and in the secondary alarm state, the indicator lamp 13, the buzzer 14 and the vibrator emit high-frequency light, sound and vibration prompts, and the display module indicates avoidance and prompts a user to withdraw and avoid danger.

In the embodiment of the application, the early warning module adopts the combination setting of pilot lamp 13, bee calling organ 14 and vibrator, and detection device adopts display module, sets up module, portable power source and exhaust hole 17's settlement, makes detection device can work more steadily, and it is right to have promoted gaseous detection device's stability, maneuverability, use convenience and user experience.

Therefore, in the embodiment of the application, compared with the prior art, the hazardous gas detection device for the fire rescue scene has at least the following technical effects: can be under the condition that multiple hazardous gas exists, more high temperature resistant, more can accurately inspect out hazardous gas's kind and concentration to realize dangerous early warning and inefficacy early warning, improved detection device's stability and reliability simultaneously.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims (10)

1. A dangerous gas detection device for fire rescue scene, comprising:

the gas sensor comprises a shell (16), a gas inlet (1), a filter (2), at least two gas sensors (5), an information processing module (6) and an early warning module (7);

casing (16) adopt high temperature resistant material to make, air inlet (1) run through set up in one side of casing (16), filter (2) gas sensor (5) information processing module (6) early warning module (7) set up in inside casing (16), the inlet end of filter (2) with air inlet (1) are connected, gas sensor (5) with the end of giving vent to anger of filter (2) is connected, gas sensor (5) with information processing module (6) electric connection, early warning module (7) with information processing module (6) electric connection.

2. A fire rescue scene oriented hazardous gas detection device as claimed in claim 1, further comprising a pumping module (3), a multi-way connector (4), a pipe;

the multi-way connector (4) comprises at least three interfaces, the air inlet (1), the filter (2), the pumping module (3) and the multi-way connector (4) are sequentially connected through the pipelines respectively, and the gas sensor (5) is connected with the multi-way connector (4) through the pipelines respectively.

3. A fire rescue scene oriented hazardous gas detection device as claimed in claim 2, further comprising a plurality of test paper reactors (8), a plurality of chemical detection test paper (9), wherein the test paper reactors (8) are respectively connected with the multi-way connector (4) through pipes, the chemical detection test paper (9) is arranged inside the test paper reactors (8), and the chemical detection test paper (9) adopts at least two different kinds.

4. The hazardous gas detection device for the fire rescue scene as claimed in claim 3, wherein the number of the test paper reactors (8) is at least two;

the device further comprises at least two air valves (10), the air valves (10) are respectively arranged on the test paper reactor (8) and a pipeline between the multi-way connectors (4), and the air valves (10) are respectively electrically connected with the information processing module (6).

5. The hazardous gas detection device for the fire rescue scene as claimed in claim 4, wherein the information processing module (6) comprises a failure detection unit and a control unit, the failure detection unit is electrically connected with the gas sensor (5) and the test paper reactor (8) respectively and used for detecting whether the gas sensor (5) and/or the chemical test paper (9) fails or not, and the control unit is electrically connected with the gas valve (10) respectively and used for sending instructions to the gas valve (10).

6. The hazardous gas detection device for fire rescue scene of any one of claims 1 to 5, further comprising a liquid thermal insulation layer (22);

the liquid heat insulation layer (22) is arranged on the inner wall of the shell (16) and comprises a heat insulation layer bag and cooling liquid, and the cooling liquid is hermetically arranged in the heat insulation layer bag.

7. A dangerous gas detection device facing a fire rescue scene as claimed in claim 6, wherein the gas sensor (5) comprises: electrochemical sensors, catalytic combustion sensors, photoionization sensors;

or, an electrochemical sensor, a semiconductor sensor, a photoionization sensor.

8. A fire rescue scene-oriented hazardous gas detection device as claimed in claim 7, wherein the gas sensor (5) employs a six-gas sensor combination employing three electrochemical sensors, an infrared sensor, a catalytic combustion sensor and a photoionization sensor;

or the six gas sensor combinations adopt six gas sensor combinations of four electrochemical sensors, one catalytic combustion sensor and one photoionization sensor, and the six gas sensors are interchangeable in position.

9. The fire rescue scene oriented hazardous gas detection device of claim 6, further comprising a wireless data transmission module (11), a positioning module (12) and an antenna, wherein the wireless data transmission module (11), the positioning module (12) and the antenna are respectively electrically connected with the information processing module (6) and are all arranged inside the shell (16), the wireless data transmission module (11) is used for sending transmission data to a remote terminal, the working frequency band of the wireless data transmission module (11) is 410-510 MHz, and the positioning module (12) is used for satellite positioning and/or inertial navigation positioning of the device.

10. The hazardous gas detection device for fire rescue scene as claimed in claim 6, wherein the early warning module (7) comprises: the system comprises a plurality of indicating lamps (13), a buzzer (14) and a vibrator, wherein the indicating lamps (13), the buzzer (14) and the vibrator are respectively and electrically connected with the information processing module (6);

the device further comprises: the device comprises a display module, a setting module, a mobile power supply and an exhaust hole (17);

the outer port of the air inlet (1) is arranged at one side of the shell (16) and the inner space of the air inlet (1) is connected with the external atmosphere, the display module comprises a display screen (18), the display screen (18) is arranged outside the shell (16), the setting module comprises a key (19), the key (19) is arranged outside the shell (16), the mobile power supply comprises a rechargeable battery pack and charging contacts (20), the rechargeable battery pack is arranged inside the shell (16), the charging contact (20) is arranged outside the shell (16) in a penetrating way, the display module, the setting module and the mobile power supply are respectively and electrically connected with the information processing module (6), the exhaust holes (17) penetrate through the shell (16) and are respectively connected with the gas sensor (5) through pipelines.

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