CN114324541A - Portable fire rescue on-site sample detection device - Google Patents
Portable fire rescue on-site sample detection device Download PDFInfo
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- CN114324541A CN114324541A CN202111460186.5A CN202111460186A CN114324541A CN 114324541 A CN114324541 A CN 114324541A CN 202111460186 A CN202111460186 A CN 202111460186A CN 114324541 A CN114324541 A CN 114324541A
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Abstract
The invention belongs to the technical field of fire rescue scene detection, and particularly relates to a portable fire rescue scene sample detection device. Comprises a box body and a box cover; the upper opening of the box body is provided with a partition board, a liquid sample detection concave disc, a sample pretreatment concave disc, a detection controller and an electrochemical detection module; a battery and a vacuum pump for supplying power to each component are arranged in the box body; the box cover is internally provided with a gas detection pipe fixing device, a sensor component box with a gas sensor and the gas sensor; forming a gas flow path: external gas passes through the sensor component box, passes through a gas detection tube in the gas detection tube fixing device, enters the closed gas flow guide cavity, is discharged through a vent at the bottom end of the closed gas flow guide cavity, and reaches the vacuum pump through a pipeline to realize gas component detection; and detecting the liquid components by using an electrochemical detection module. The invention has simple structure, convenient operation and high integration level, and can simultaneously realize the detection of various substances.
Description
Technical Field
The invention belongs to the technical field of fire rescue scene detection, and particularly relates to a portable fire rescue scene sample detection device.
Background
In fire accidents and disaster sites involving dangerous chemicals and the like, fire rescue personnel often need to rapidly detect the sites, analyze and identify unknown or possibly existing chemical substances and the relationship between the unknown or possibly existing chemical substances and the occurrence and development of the disaster accidents, and further rapidly and scientifically find out accident reasons and effectively carry out emergency treatment and other works.
The electrochemical detection technology can obtain important information such as types, contents and the like by utilizing the electrochemical properties of the sample, has the advantages of high sensitivity, good selectivity, simple equipment, convenient operation, wide application range and the like, and is a powerful technical means for the rapid detection work of extracting the sample at the fire rescue site. The fire rescue site environment and the sample types have the characteristics of complexity and diversity, in addition, the portable and miniature electrochemical instruments and equipment special for the fire rescue site are relatively lacked, the electrochemical detection and analysis work of related samples can only be carried out under the laboratory condition, and much inconvenience is brought to the work of fire investigation, fire emergency disposal and the like. In addition, various toxic and harmful dangerous gases existing in the fire rescue scene are an important detection and analysis object. In contrast, the detection of a gas sample by an electrochemical technique is mainly realized by a commercial small-sized electrochemical gas sensor, however, since such an electrochemical sensor and a gas sample often have the characteristic of specific response, one sensor is usually only suitable for the detection of a certain gas or a certain type of gas. Although the variety range of the gas to be detected can be reduced according to on-site basic information, inquiry and investigation of personnel and other ways, the detection requirement of unknown gas outside the predicted variety range still cannot be well met by using the limited electrochemical gas sensor, and if all the commercialized electrochemical sensors are simultaneously integrated on one set of equipment, the equipment cost can be greatly increased. Therefore, if the gas detection tube filled with special materials is utilized, the color change is generated through the chemical reaction between the materials in the tube and the corresponding gas, the gas possibly existing in the fire fighting and rescue scene is identified, and the method not only is a technical supplement for the detection of the electrochemical gas sensor, but also is a technical means with low cost, flexible use, convenience and practicability.
Therefore, the invention aims to provide the portable detection device which has the advantages of ingenious structure and simple operation, has the electrochemical detection function, can be used together with the gas detection pipe, provides powerful technical support for relevant work of sample detection and analysis in the fire rescue field, and has very positive significance.
Disclosure of Invention
The invention aims to provide a portable device which is low in cost and high in detection efficiency and can be used for detecting samples in a fire rescue site.
The invention provides a portable fire rescue field sample detection device which comprises a box body, a box cover, a box body partition plate, a detection controller, an electrochemical detection module, a liquid sample detection concave disc, a sample pretreatment concave disc, a chip type printing electrode, a built-in battery, a vacuum pump, a gas detection tube fixing device, a sensor component box and a gas sensor, wherein the box body is provided with a box body;
the opening of the box body is upward, and the box body clapboard covers the opening of the box body; the box cover is also provided with a cavity, the opening of the cavity is downward, and the cavity can be covered on the box body;
the detection controller, the electrochemical detection module, the liquid sample detection concave disc and the sample pretreatment concave disc are all arranged on a box body partition plate; the detection controller is provided with a display screen;
the gas detection pipe fixing device and the sensor component box are fixedly arranged in the box cover; the sensor component box is a sealed box body, and the gas sensor is arranged in the sensor component box; the gas detection tube fixing device is used for positioning the gas detection tube and is positioned below the sensor component box;
the detection controller is connected with the electrochemical detection module through a data signal line; the detection controller is also connected with the gas sensor through a data signal line; the electrochemical detection module is provided with a socket for inserting and connecting the chip-type printed electrode, and the liquid sample detection concave disc is arranged below the chip-type printed electrode;
the built-in battery and the vacuum pump are arranged in the box body; the built-in battery is connected with the detection controller, the electrochemical detection module, the gas sensor and the vacuum pump through power connecting wires to supply power to the detection controller, the electrochemical detection module, the gas sensor and the vacuum pump;
the gas detection pipes are provided with a plurality of gas detection pipes and can be fixedly arranged in the gas detection pipe fixing device; the top end and the bottom end of the gas detection tube fixing device are respectively provided with a positioning through hole which can correspond to the top end and the bottom end of the tube body of each gas detection tube; the bottom of the gas detection tube fixing device is also hermetically butted with a closed airflow guide cavity; the bottom of the closed airflow guide cavity is provided with an air vent which is in butt joint with a vacuum pump through a pipeline; the top of the closed airflow guide cavity is also provided with a large opening which is butted with the bottom end of the gas detection tube fixing device and covers all the positioning through holes at the bottom end of the gas detection tube fixing device;
in the box cover, the sensor component box is arranged above the gas detection pipe fixing device and is in sealed butt joint with the gas detection pipe fixing device; a through hole is formed in the butt joint surface of the sensor component box and corresponds to the position of the positioning through hole in the top end of the gas detection tube fixing device; the gas sensor is arranged in the sensor component box; the sensor component box is also provided with an air inlet which can be communicated with the outside air, and the air inlet is provided with a detachable sealing air inlet cover;
under the action of the vacuum pump, a gas flow path can be formed: the gas inlet that enables outside gas to pass through the sensor part case gets into the sensor part case, passes through the sensor part case trompil again after contacting with gas sensor, during the positioning hole on gaseous sense tube fixing device top flowed into gaseous sense tube, gaseous behind gaseous sense tube, flows out from the positioning hole of gaseous sense tube fixing device bottom again, gets into airtight air current guide chamber, discharges through the blow vent of airtight air current guide chamber bottom again, reachs the vacuum pump through the pipeline.
In the invention, the air inlet on the sensor component box is also provided with a filter screen.
In the invention, the adsorption filter material is filled in the closed airflow guide cavity.
In the invention, the gas detection tube fixing device comprises an upper fastening conduction component and a lower fastening conduction component which are arranged in sequence from top to bottom; the upper fastening conducting component and the lower fastening conducting component are arranged in parallel; the positioning through holes are respectively arranged on the upper fastening conduction component and the lower fastening conduction component, the upper port of the gas detection tube can be inserted into the positioning through hole of the upper fastening conduction component, and the lower port can be inserted into the positioning through hole of the lower fastening conduction component; the upper fastening conduction component and the lower fastening conduction component are respectively connected with the sensor component box and the airflow guide cavity in a sealing mode.
In the invention, the positioning through holes in the upper fastening conducting part and the lower fastening conducting part are transversely arranged in a straight line; the upper fastening conducting part/the lower fastening conducting part is divided into two detachable parts along the diameter of the positioning through hole, wherein one detachable part is fixed in the upper cover and serves as a fixed block; the other one is used as a dismounting block and is separable from the fixed block at the position of the positioning through hole, so that the gas detection tube can be placed into the positioning through hole, and the gas detection tube can be fixed after the dismounting block is in butt joint with the fixed block.
In the invention, the gas detection tube is a glass tube which is communicated up and down, the filler for detecting harmful substances is filled in the gas detection tube, and the gas detection tube has different fillers aiming at different gases and is a conventional gas detection tube which can be purchased in the market.
In the invention, anticorrosive coatings such as polytetrafluoroethylene and the like are arranged on the surfaces of the liquid sample detection concave disc and the sample pretreatment concave disc and can be replaced or cleaned.
In the invention, the pipeline, the power supply connecting wire and the data signal wire are gathered together through the circuit protective sleeve and then pass through the box body partition plate.
In the invention, the gas sensor is an electrochemical gas sensor integrated module and is integrated with one or more sensors of a carbon monoxide sensor, a hydrogen sulfide sensor, a sulfur dioxide sensor, a combustible gas sensor, an oxygen sensor, a nitric oxide sensor, a nitrogen dioxide sensor, a hydrogen sensor and an ammonia sensor.
In the invention, the gas detection tube is one or more of gasoline, diesel oil, ammonia gas, hydrogen cyanide, hydrogen peroxide, tribromomethane, nitrogen dioxide, nitrobenzene, chlorine, butylamine, ethyl ether, methanol, carbon dioxide, chlorobenzene, propanethiol, chloroethylene, xylene and the like.
The working mode of the invention is as follows:
the gas sensor is integrated with one or more sensors such as a carbon monoxide sensor, a hydrogen sulfide sensor, a sulfur dioxide sensor, a combustible gas sensor, an oxygen sensor, a nitric oxide sensor, a nitrogen dioxide sensor, a hydrogen sensor and an ammonia sensor, and the gas detection tube is selected and matched with a detection filler or a corresponding commercial gas detection tube which can detect gasoline, diesel oil, ammonia gas, hydrogen cyanide, hydrogen peroxide, tribromomethane, nitrogen dioxide, nitrobenzene, chlorine gas, butylamine, ethyl ether, methanol, carbon dioxide, chlorobenzene, propanethiol, vinyl chloride and xylene according to the basic situation of a fire site and the obtained basic information;
opening the cover body and the air inlet cover, opening a detaching block of the upper fastening conduction component and the lower fastening conduction component, putting the selected gas detection tube into a fixing block of the upper fastening conduction component and the lower fastening conduction component, covering the detaching block on the fixing block, and fixing the gas detection tube;
starting a power supply of the device, starting a detection controller, controlling a vacuum pump and an electrochemical detection module to be started by the detection controller, and displaying real-time data of a gas sensor; under the action of vacuum, environmental gas enters the sensor component box from the gas inlet, solid particles in the gas are intercepted and filtered by the filter screen on the gas inlet, the filtered gas enters the sensor component box and then contacts the gas sensor, if the gas contains one or more gas components of carbon monoxide, hydrogen sulfide, sulfur dioxide, combustible gas, oxygen, nitric oxide, nitrogen dioxide, hydrogen, ammonia and the like, the corresponding electrochemical sensor generates a response signal and transmits the response signal to the detection controller through a data signal line, and the detection controller analyzes the transmitted electrochemical gas data; after the gas passes through the gas sensor, if the gas also contains one or more gas components of gasoline, diesel oil, ammonia gas, hydrogen cyanide, hydrogen peroxide, tribromomethane, nitrogen dioxide, nitrobenzene, chlorine gas, butylamine, ethyl ether, methanol, carbon dioxide, chlorobenzene, propanethiol, chloroethylene, xylene ammonia gas, hydrogen cyanide, nitrogen dioxide, nitrobenzene, chlorine gas, carbon dioxide and the like, the corresponding gas detection tube generates a color reaction, and field personnel can identify the existence and approximate content of the corresponding gas through observation. The gas components passing through the gas detection tube can be adsorbed by the filter material arranged in the closed gas flow guide cavity;
thereby completing the detection of gas components in the fire scene environment.
The steps of extracting, filtering and purifying the articles such as beakers, reagent bottles, tweezers and the like related to the pretreatment of the liquid samples collected on site and the samples can be carried out in a concave disc for sample pretreatment, and one end of a commercialized or customized chip type printing electrode is inserted into a socket of an electrochemical detection module; dripping a processed liquid sample or a sample directly meeting the electrochemical detection requirement on site on the surface of a working area of the chip-type printed electrode through a dropper, reading information fed back from the chip-type printed electrode by using a detection controller, and detecting and analyzing the dripped liquid sample; the liquid sample detection concave disc can receive leakage on the chip type printing electrode; or one end of the chip type printed electrode is connected with the detection module, the other end of the chip type printed electrode is provided with a lead wire for inserting the chip type printed electrode into the interface, and the chip type printed electrode is directly immersed into liquid in a container or a field for detection after being connected with the lead wire;
thereby completing the liquid component detection.
The sensor component box is opened, and the gas sensor on the gas sensor can be adjusted and replaced.
The invention has simple structure, convenient operation and high integration level, and can simultaneously realize the detection of various toxic and harmful substances.
Drawings
FIG. 1 is a schematic representation of the structure of the present invention.
FIG. 2 is a view showing the structure of a gas detecting tube fixing device.
Reference numbers in the figures: the device comprises a box body 1, a box cover 2, a box body partition plate 3, a detection controller 4, an electrochemical detection module 5, a liquid sample detection concave disc 6, a sample pretreatment concave disc 7, a chip type printed electrode 8, a built-in battery 9, a vacuum pump 10, a gas detection tube fixing device 11, a sensor component box 12, a gas sensor 13, a gas detection tube 14, a top fastening conduction component 15, a bottom fastening conduction component 16, a positioning through hole 17, a closed airflow guide cavity 18 and a disassembly block 19.
Detailed Description
The device comprises a box body 1, a box cover 2, a box body partition plate 3, a detection controller 4, an electrochemical detection module 5, a liquid sample detection concave disc 6, a sample pretreatment concave disc 7, a chip type printing electrode 8, a built-in battery 9, a vacuum pump 10, a gas detection tube fixing device 11, a sensor component box 12 and a gas sensor 13;
the box body 1 is a cuboid and is made of engineering plastics; the opening of the box body 1 is upward, and the box body clapboard 3 covers the opening of the box body 1; the box cover 2 is also a cuboid and is provided with a cavity, the opening of the cavity is downward, and the box cover can be covered on the box body 1; the box body 1 is connected with the box cover 2 through a rotating shaft, the box cover 2 is overturned to be opened by 90 degrees, and the folding hinge can be arranged on the outer side wall of the box body 1 adjacent to the box cover 2, so that the box cover 2 is overturned to be opened and then is fixed in a vertical state, as shown in figure 1.
The detection controller 4, the electrochemical detection module 5, the liquid sample detection concave disc 6 and the sample pretreatment concave disc 7 are all arranged on the box body partition plate 3; the detection controller 4 is a tablet personal computer and is provided with a touch control display screen; the electrochemical detection module 5 can read the data signal generated by the chip-type printed electrode 8 after contacting the liquid sample, and is a commercially available electrochemical data reader, for example, the technology of a DropStat portable electrochemical data reader based on Switzerland can be adopted; the electrochemical detection module 5 is arranged near the liquid sample detection concave disc 6; the surfaces of the liquid sample detection concave disk 6 and the sample pretreatment concave disk 7 are made of anticorrosive materials such as polytetrafluoroethylene and the like, and can be taken down for replacement or cleaning.
The gas detection pipe fixing device 11 and the sensor component box 12 are fixedly arranged in the box cover 2; the sensor component box 12 is a sealed box body and is attached to the top position of the box cover 2 in an open state, as shown in fig. 1, openings are formed in the attached surface at the positions corresponding to the box cover 2 and the sensor component box 12 and serve as air inlets, and filter screens are arranged at the air inlets; the gas sensor 13 is provided in the sensor component case 12; the gas detection tube fixing device 11 is used for fixing a gas detection tube 14 and is positioned below the sensor component box 12;
the gas detection tube 14 is a glass tube which is through up and down, the interior of the gas detection tube is filled with fillers for detecting harmful substances, and the gas detection tube is a conventional gas detection tube which can be purchased in the market and has different fillers for different gases;
the gas detection tube fixing device 11 comprises an upper fastening conduction component 15 and a lower fastening conduction component 16 which are arranged in sequence from top to bottom; the upper fastening conducting part 15 and the lower fastening conducting part 16 are both designed into cuboids and are arranged in parallel; the upper fastening conducting component 15 and the lower fastening conducting component 16 are both provided with cylindrical positioning through holes 17 which are vertically communicated, the upper port of the gas detection tube 14 can be inserted into the positioning through holes of the upper fastening conducting component, and the lower port can be inserted into the positioning through holes of the lower fastening conducting component; the positioning through holes 17 in the upper fastening conducting part 15 and the lower fastening conducting part 16 are transversely arranged in a straight line; the upper fastening conducting part 15 and the lower fastening conducting part 16 are both divided into two detachable components along the diameter of the positioning through hole 17, wherein one component is fixed in the upper cover to be used as a fixed block; the other one is used as a disassembly block 19 and is separated from the fixed block at the position of the positioning through hole 17, so that the gas detection tube can be placed into the positioning through hole 17, and the disassembly block 19 can be butted with the fixed block to fix the gas detection tube 14;
the lower fastening conducting component 16 and the upper fastening conducting component 15 have the same structure, and the specific structure is slightly different: the bottom end of the lower fastening conduction component 16 is divided into an upper layer and a lower layer, the upper layer is a fixed block and a dismounting block 19, the lower layer is a base integrated with the fixed block, and the area of the base is the same as the area of the base after the dismounting block 19 of the lower fastening conduction component 16 is butted with the fixed block; the section of the positioning through hole 17 positioned in the lower layer base is of a structure with a large upper part and a small lower part or the diameter of the positioning through hole 17 positioned in the upper layer is smaller than that of the positioning through hole 17 positioned in the lower layer, so that the gas detection tube cannot fall down and slide out of the positioning through hole 17 when being placed in the gas detection tube fixing device 11; the bottom end of the base is provided with a sealed air flow guide cavity 18 which is in sealed butt joint; as shown in fig. 2; a vent hole is arranged at the bottom of the closed airflow guide cavity 18 and is in butt joint with the vacuum pump 10 through a pipeline, a large opening is arranged at the top of the closed airflow guide cavity 18 and is in butt joint with a base at the bottom end of the lower fastening conduction component 16 to cover all positioning through holes at the bottom end of the lower fastening conduction component 16; thus, the sealing of the closed airflow guide cavity 18 and the positioning through hole 17 is not influenced under the condition that the dismounting block 19 of the lower fastening conduction component 16 is dismounted;
the closed airflow guiding cavity 18 is filled with activated carbon to adsorb toxic and harmful gases, so that the toxic and harmful gases are prevented from directly entering the vacuum pump.
Under the action of the vacuum pump 10, a gas flow path can be formed: the gas inlet that enables outside gas to pass through sensor part case 12 gets into sensor part case 12 in, the trompil of rethread sensor part case 12 bottom flows into gas detection tube 14 through the positioning hole on gas detection tube fixing device 11 top, and gas flows out from the positioning hole of gas detection tube fixing device 11 bottom again behind gas detection tube 14, gets into airtight air current guide chamber 18, and the blow vent of airtight air current guide chamber 18 bottom is discharged again, arrives vacuum pump 10 through the pipeline.
The detection controller 4 is connected with the electrochemical detection module 5 through a data signal line; the detection controller 4 is also connected with the gas sensor 13 through a data signal line; the electrochemical detection module 5 is provided with a socket for inserting and connecting the insertion end of the chip-type printed electrode 8, and the liquid sample detection concave disc 6 is positioned below the exposed end of the chip-type printed electrode;
the built-in battery 9 and the vacuum pump 10 are arranged in the box body 1, and the built-in battery 9 is connected with the detection controller 4, the electrochemical detection module 5, the gas sensor 13 and the vacuum pump 10 through power connecting wires to supply power for the detection controller, the electrochemical detection module 5, the gas sensor 13 and the vacuum pump 10.
The gas sensor 13 is an electrochemical gas sensor integrated module, and comprises a carbon monoxide sensor, a hydrogen sulfide sensor, a combustible gas sensor and/or an oxygen sensor.
When the invention is used, the gas sensor is integrated with a carbon monoxide sensor, a hydrogen sulfide sensor, a combustible gas sensor and an oxygen sensor, and the gas detection tube is matched with a commercial gas detection tube capable of detecting ammonia gas, hydrogen cyanide, nitrogen dioxide, nitrobenzene, chlorine and dimethylbenzene according to the basic situation of a fire site and the obtained basic information;
opening the cover body and the air inlet cover, opening a detaching block of the upper fastening conduction component and the lower fastening conduction component, putting the selected gas detection tube into a fixing block of the upper fastening conduction component and the lower fastening conduction component, covering the detaching block on the fixing block, and fixing the gas detection tube;
the power supply of the device is started, the detection controller is started, and the detection controller can display real-time data of the gas sensor by controlling the opening of the vacuum pump and the electrochemical detection module; under the action of vacuum, environmental gas enters the sensor component box from the gas inlet, solid particles in the gas are intercepted and filtered by the filter screen on the gas inlet, the filtered gas enters the sensor component box and then contacts with the gas sensor, if the gas contains one or more gases of carbon monoxide, hydrogen sulfide, combustible gas, oxygen and the like, the corresponding electrochemical sensor generates a response signal and transmits the response signal to the detection controller through the data signal line, and the detection controller analyzes the transmitted electrochemical gas data; after the gas passes through the gas sensor, if the gas also contains one or more gases of ammonia gas, hydrogen cyanide, nitrogen dioxide, nitrobenzene, chlorine, xylene and the like, the corresponding gas detection tube generates a color reaction, and field personnel can identify the existence and approximate content of the corresponding gas through observation. The gas components passing through the gas detection tube can be adsorbed by the activated carbon material arranged in the closed gas flow guide cavity.
Placing soil extracted in a fire rescue site in a beaker, placing the beaker on a sample pretreatment concave disc, adding deionized water, filtering solid impurities, collecting filtrate, and adding a buffer solution into the filtrate to be used as a sample to be detected; and inserting the commercialized chip-type printed electrode into a socket of the electrochemical detection module, dripping the processed liquid sample to be detected on the surface of a working area of the commercialized chip-type printed electrode through a dropper, and detecting and analyzing the dripped liquid sample by using a detection controller. Or one end of the chip-type printed electrode is connected with the detection module, the other end of the chip-type printed electrode is provided with a lead wire for inserting the chip-type printed electrode into the interface, and the chip-type printed electrode is directly immersed into a beaker containing a sample to be detected and is subjected to detection analysis under magnetic stirring after being connected with the lead wire.
The sensor component box is opened, and the gas sensor on the gas sensor can be adjusted and replaced.
While, for purposes of simplicity of explanation, the above-described methodologies are shown and described as a series of structures, it is to be understood and appreciated that the methodologies are not limited by detail, as some structures may, in accordance with one or more embodiments, occur in different orders and/or concurrently with other acts from that shown and described herein or not shown and described herein, but as may be understood by those of ordinary skill in the art.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the disclosure is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A portable fire rescue field sample detection device is characterized by comprising a box body, a box cover, a box body partition plate, a detection controller, an electrochemical detection module, a liquid sample detection concave disc, a sample pretreatment concave disc, a chip type printing electrode, a built-in battery, a vacuum pump, a gas detection tube fixing device, a sensor component box and a gas sensor;
the opening of the box body is upward, and the box body clapboard covers the opening of the box body; the box cover is also provided with a cavity, the opening of the cavity is downward, and the cavity can be covered on the box body;
the detection controller, the electrochemical detection module, the liquid sample detection concave disc and the sample pretreatment concave disc are all arranged on a box body partition plate; the detection controller is provided with a display screen;
the gas detection pipe fixing device and the sensor component box are fixedly arranged in the box cover; the sensor component box is a sealed box body, and the gas sensor is arranged in the sensor component box; the gas detection tube fixing device is used for positioning the gas detection tube and is positioned below the sensor component box;
the detection controller is connected with the electrochemical detection module through a data signal line; the detection controller is also connected with the gas sensor through a data signal line; the electrochemical detection module is provided with a socket for inserting and connecting the chip-type printed electrode, and the liquid sample detection concave disc is arranged below the chip-type printed electrode;
the built-in battery and the vacuum pump are arranged in the box body; the built-in battery is connected with the detection controller, the electrochemical detection module, the gas sensor and the vacuum pump through power connecting wires to supply power to the detection controller, the electrochemical detection module, the gas sensor and the vacuum pump;
the gas detection pipes are provided with a plurality of gas detection pipes and can be fixedly arranged in the gas detection pipe fixing device; the top end and the bottom end of the gas detection tube fixing device are respectively provided with a positioning through hole which can correspond to the top end and the bottom end of the tube body of each gas detection tube; the bottom of the gas detection tube fixing device is also hermetically butted with a closed airflow guide cavity; the bottom of the closed airflow guide cavity is provided with an air vent which is in butt joint with a vacuum pump through a pipeline; the top of the closed airflow guide cavity is also provided with a large opening which is butted with the bottom end of the gas detection tube fixing device and covers all the positioning through holes at the bottom end of the gas detection tube fixing device;
in the box cover, the sensor component box is arranged above the gas detection pipe fixing device and is in sealed butt joint with the gas detection pipe fixing device; a through hole is formed in the butt joint surface of the sensor component box and corresponds to the position of the positioning through hole in the top end of the gas detection tube fixing device; the gas sensor is arranged in the sensor component box; the sensor component box is also provided with an air inlet which can be communicated with the outside air, and the air inlet is provided with a detachable sealing air inlet cover;
under the action of the vacuum pump, a gas flow path can be formed: the gas inlet that enables outside gas to pass through the sensor part case gets into the sensor part case, passes through the sensor part case trompil again after contacting with gas sensor, during the positioning hole on gaseous sense tube fixing device top flowed into gaseous sense tube, gaseous behind gaseous sense tube, flows out from the positioning hole of gaseous sense tube fixing device bottom again, gets into airtight air current guide chamber, discharges through the blow vent of airtight air current guide chamber bottom again, reachs the vacuum pump through the pipeline.
2. A portable firefighting rescue field sample testing apparatus as recited in claim 1, wherein said sensor unit case inlet is further provided with a filter screen.
3. A portable firefighting rescue field sample testing apparatus as set forth in claim 1, wherein said closed airflow directing chamber is filled with an adsorbing filter material.
4. A portable firefighting rescue field sample testing apparatus as recited in claim 1, wherein said gas detection tube fixing means comprises an upper fastening conduction member and a lower fastening conduction member arranged in series from top to bottom; the upper fastening conducting component and the lower fastening conducting component are arranged in parallel; the positioning through holes are respectively arranged on the upper fastening conduction component and the lower fastening conduction component, the upper port of the gas detection tube can be inserted into the positioning through hole of the upper fastening conduction component, and the lower port can be inserted into the positioning through hole of the lower fastening conduction component; the upper fastening conduction component and the lower fastening conduction component are respectively connected with the sensor component box and the airflow guide cavity in a sealing mode.
5. A portable firefighting rescue field sample inspection device as claimed in claim 4, wherein the positioning through holes in the upper fastening conduction part and the lower fastening conduction part are arranged in a line transversely; the upper fastening conducting part/the lower fastening conducting part is divided into two detachable parts along the diameter of the positioning through hole, wherein one detachable part is fixed in the upper cover and serves as a fixed block; the other one is used as a dismounting block and is separable from the fixed block at the position of the positioning through hole, so that the gas detection tube can be placed into the positioning through hole, and the gas detection tube can be fixed after the dismounting block is in butt joint with the fixed block.
6. A portable fire rescue on-site sample detection device as defined in claim 5, wherein the bottom end of the lower fastening conduction component is divided into an upper layer and a lower layer, the upper layer is a fixed block and a disassembly block, the lower layer is a base integrated with the fixed block, and the area of the base is the same as the area of the lower fastening conduction component after the disassembly block and the fixed block are butted; the section of the positioning through hole in the lower layer base is of a structure with a large upper part and a small lower part or the diameter of the positioning through hole is smaller than that of the positioning through hole in the upper layer.
7. A portable fire rescue on-site sample detection device as defined in claim 1, wherein the gas sensor is an electrochemical gas sensor integrated module integrated with one or more sensors selected from a carbon monoxide sensor, a hydrogen sulfide sensor, a sulfur dioxide sensor, a combustible gas sensor, an oxygen sensor, a nitric oxide sensor, a nitrogen dioxide sensor, a hydrogen sensor, and an ammonia sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460186.5A CN114324541A (en) | 2021-12-02 | 2021-12-02 | Portable fire rescue on-site sample detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111460186.5A CN114324541A (en) | 2021-12-02 | 2021-12-02 | Portable fire rescue on-site sample detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114324541A true CN114324541A (en) | 2022-04-12 |
Family
ID=81049432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111460186.5A Pending CN114324541A (en) | 2021-12-02 | 2021-12-02 | Portable fire rescue on-site sample detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114324541A (en) |
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2021
- 2021-12-02 CN CN202111460186.5A patent/CN114324541A/en active Pending
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