CN208043626U - harmful gas detection system - Google Patents

harmful gas detection system Download PDF

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Publication number
CN208043626U
CN208043626U CN201820391119.XU CN201820391119U CN208043626U CN 208043626 U CN208043626 U CN 208043626U CN 201820391119 U CN201820391119 U CN 201820391119U CN 208043626 U CN208043626 U CN 208043626U
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China
Prior art keywords
cylinder
gas
cover
detection
zero
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CN201820391119.XU
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Chinese (zh)
Inventor
修倩
栾绍涛
刘文艳
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Qingdao Greenblue Environment Protection Technology Co Ltd
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Qingdao Greenblue Environment Protection Technology Co Ltd
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Priority to CN201820391119.XU priority Critical patent/CN208043626U/en
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Abstract

The utility model provides a kind of harmful gas detection system, including air inlet pipe, the filter being connected to air inlet pipe, orifice metre, surge flask, air pump and the detection gas chamber being sequentially communicated with filter, it is provided with optics or electrochemical sensor in the wherein described gas chamber, characterized by further comprising the triple valves being arranged between filter and orifice metre, and the zero gas calibrating installation being arranged between triple valve and detection gas chamber, wherein:The triple valve includes the first inlet end, the second inlet end and outlet side, the zero gas calibrating installation includes gas feed and gas vent, first inlet end of the triple valve and the outlet of filter, second inlet end is connected to the gas vent of zero gas calibrating installation, the outlet side of the triple valve is connected with orifice metre, and the gas outlet for detecting gas chamber is connected to the gas feed of zero gas calibrating installation.

Description

Harmful gas detection system
Technical field
The utility model belongs to gas detection technology field, more particularly to a kind of harmful gas detection system.
Background technology
During air monitoring harmful gases, with sensor(Optics, electrochemistry)The increase of usage time, sensor Itself will produce null offset, so needing periodically to calibrate zero by zero gas.Zero gas refers to that adjustment gas analyzer minimum is carved The gas of degree, and zero gas is shown as when entrance analyzer.Zero gas, which should be free of, needs lateral element or interfering substance, but can be with Contain the ingredient unrelated with measurement.Generally use the High Purity Nitrogen for being free of ingredient to be measured or clean air as zero gas.Have this In evil gas detecting system, it usually needs access Zero gas generator or zero gas calibrating installation, zero gas hair in the prior art Raw device or zero gas calibrating installation are required for matching with air compressor machine, using air compressor machine could make air enter in it into Row reaction, causes volume big, inconvenient to carry, and maintenance cost is high, and due to the select permeability of catalyst, and needs are heated to 300-350 DEG C, it could realize normal work, meet the requirements, lead to problems such as maintenance cost high and not energy-efficient.In this way for having For evil gas detecting system, instant zero point correction can not achieve.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of harmful gas detection system, specific technical solutions It is as follows:
A kind of harmful gas detection system, including air inlet pipe, the filter being connected to air inlet pipe, are sequentially communicated with filter Orifice metre, surge flask, air pump and detection gas chamber, wherein be provided with optics or electrochemical sensor in the gas chamber, Characterized by further comprising the triple valves being arranged between filter and orifice metre, and setting is in triple valve and detection gas Zero gas calibrating installation between room, wherein:The triple valve includes the first inlet end, the second inlet end and outlet side, institute It includes gas feed and gas vent to state zero gas calibrating installation, the first inlet end of the triple valve and the outlet of filter Connection, the second inlet end are connected to the gas vent of zero gas calibrating installation, the outlet side of the triple valve and orifice flow Meter is connected, and the gas outlet for detecting gas chamber is connected to the gas feed of zero gas calibrating installation.
The further technical characteristic of the utility model is;
The zero gas calibrating installation includes the upper end cover with gas feed set gradually from top to bottom, with upper end cover The first cylinder being detachably connected, the second cylinder being detachably connected with the first cylinder, be detachably connected with the second cylinder Three cylinders, and the lower end that is detachably connected with third cylinder are provided with the bottom end cover of gas vent, wherein:The bottom of each cylinder Portion is both provided with leachy back cover, and is provided with catalyst layer in first cylinder;Setting in second cylinder There is Strong oxdiative oxidant layer;It is provided with active carbon layer in the third cylinder.
It is both provided with filtering between the first cylinder inner catalyst layer and back cover and between catalyst layer and upper end cover Cotton.
In second cylinder filter cotton is provided between Strong oxdiative oxidant layer and back cover.
Filter cotton is provided between active carbon layer and back cover in the third cylinder.
It is provided with filter cotton in the bottom end cover.
Between the upper end cover and the first cylinder, between the first cylinder and the second cylinder, the second cylinder and third cylinder it Between and third cylinder and bottom end cover between be both provided with sealing ring.
The bottom end cover and each cylinder upper end are both provided with internal thread, the lower end of each cylinder and the upper end cover It is both provided with the external screw thread to match with the internal thread.
The bottom end cover and each cylinder upper end are both provided with internal card slot, each cylinder lower end and the upper end cover It is both provided with the buckle to match with the card slot.
The beneficial effects of the utility model are:
Due in this harmful gas detection system, further including the threeway being arranged between filter and orifice metre Valve, and be arranged in triple valve and detect the zero gas calibrating installation between gas chamber, wherein:The triple valve include first into Gas end, the second inlet end and outlet side, the zero gas calibrating installation include gas feed and gas vent, the triple valve The first inlet end and filter outlet, the second inlet end is connected to the gas vent of zero gas calibrating installation, examines The gas outlet for surveying gas chamber is connected to the gas feed of zero gas calibrating installation.The zero gas calibrating installation described in this way uses mould Blockization assembles, installation, convenient disassembly, and is desirably integrated into harmful gas detection system, small, plug and play, and realization is When zero point correction.Additionally, due to being integrated with catalyst layer, Strong oxdiative oxidant layer, active carbon layer in the zero gas calibrating installation, Foreign gas in air, fine particle can be removed steady bottom, obtain pure zero gas, calibrator (-ter) unit zero is more acurrate.
Description of the drawings
Fig. 1 is harmful gas detection system structural schematic diagram;
Fig. 2 is the explosive view of one embodiment of zero gas calibrating installation in Fig. 1.
Specific implementation mode
Below in conjunction with the accompanying drawings and the embodiments of the present invention make into one the harmful gas detection system of the utility model Step detailed description.
Referring to Fig.1, a kind of harmful gas detection system, including air inlet pipe 1, the filter 2 being connected to air inlet pipe 1, with mistake Orifice metre 3, surge flask 4, air pump 5 and the detection gas chamber 6 that filter 2 is sequentially communicated, wherein being provided with light in the gas chamber 6 Or electrochemical sensor, further include the triple valve 7 being arranged between filter 2 and orifice metre 3, and are arranged in threeway Zero gas calibrating installation 8 between valve 7 and detection gas chamber 6, wherein:The triple valve 7 includes the first inlet end 701, second Inlet end 702 and outlet side 703, the zero gas calibrating installation 8 include gas feed 801 and gas vent 841, described three The outlet of first inlet end 701 and filter 2 of port valve 7, the gas of the second inlet end 702 and zero gas calibrating installation 8 841 connection of body outlet, the outlet side 703 of the triple valve 7 are connected with orifice metre 3, detect the gas outlet and zero of gas chamber 6 The gas feed 801 of point gas calibration device 8 is connected to.
Fig. 2 is the explosive view of one embodiment of zero gas calibrating installation in Fig. 1, in this embodiment, the zero Gas calibration device 8 includes the upper end cover 80 with gas feed 801 set gradually from top to bottom, is detachably connected with upper end cover 80 The first cylinder 81 connect, the second cylinder 82 being detachably connected with the first cylinder, the third being detachably connected with the second cylinder 82 Cylinder 83, and the lower end that is detachably connected with third cylinder 83 are provided with the bottom end cover 84 of gas vent 841, wherein:Each The bottom of cylinder is both provided with leachy back cover, and is provided with catalyst layer in first cylinder(It is not regarded in figure); It is provided with Strong oxdiative oxidant layer in second cylinder(It is not regarded in figure);It is provided with active carbon layer in the third cylinder(In figure not Depending on).
In order to enhance clean-up effect, in practical applications, between the first cylinder inner catalyst layer 811 and back cover with And it is both provided with filter cotton between catalyst layer 811 and upper end cover 80(It is not regarded in figure).Strong oxdiative oxidant layer in second cylinder Filter cotton is provided between 821 and back cover(It is not regarded in figure).It is provided between active carbon layer 831 and back cover in the third cylinder Filter cotton(It is not regarded in figure).It is provided with filter cotton in the bottom end cover 84(It is not regarded in figure).
More preferably for sealing effect, in practical applications between the upper end cover 80 and the first cylinder 81, the first cylinder 81 And second between cylinder 82, is all provided between the second cylinder 82 and third cylinder 83 and between third cylinder 83 and bottom end cover 84 It is equipped with sealing ring(It is not regarded in figure).
In zero gas calibrating installation embodiment shown in Fig. 2, the bottom end cover 84 and each cylinder upper end are respectively provided with There are internal thread, the lower end of each cylinder and the upper end cover 80 to be both provided with the external screw thread to match with the internal thread.
In practical applications, the bottom end cover 84 and each cylinder upper end are also provided with internal card slot, described each Cylinder lower end and the upper end cover 80 are also provided with the buckle to match with the card slot.
When sampling:Sample gas enters the first inlet end 701 and the outlet side 703 of triple valve 7 by air inlet pipe 1 and filter 2, Detection gas chamber 6 is entered by orifice metre 3, surge flask 4, air pump 5 again, sampling is completed, outlet.
When school zero:The second inlet end of triple valve 702 connects zero gas calibrating installation 8, outlet of the air from detection gas chamber 6 Mouthful enter zero gas calibrating installation, then passes through the second inlet end 702 of triple valve 7 and outlet side 703, orifice metre 3, slow Rush bottle 4, air pump 5 enters detection gas chamber 6, the completion of school zero, outlet.
Due in this harmful gas detection system, including the triple valve that is arranged between filter 2 and orifice metre 3 7, and be arranged in triple valve 7 and detect the zero gas calibrating installation 8 between gas chamber 6, equipment can be periodically automatic according to demand Triple valve 7 is controlled to be calibrated or be sampled, O&M cost is reduced, makes calibration cycle more accurately and timely.
The technology contents and technical characterstic of the utility model have revealed that as above, it being understood, however, that in the utility model Under creative ideas, those skilled in the art can make various changes and improve to above structure, including individually disclose here Or the combination of claimed technical characteristic, and significantly include other combinations of these features.These deformations and/or combination It each falls in the technical field involved by the utility model, and falls into the protection domain of the utility model claims.

Claims (9)

1. a kind of harmful gas detection system, including air inlet pipe, the filter being connected to air inlet pipe are sequentially communicated with filter Orifice metre, surge flask, air pump and detection gas chamber, wherein optics or electrochemical sensor are provided in the gas chamber, It is characterized in that further including the triple valve being arranged between filter and orifice metre, and setting is in triple valve and detection gas chamber Between zero gas calibrating installation, wherein:The triple valve includes the first inlet end, the second inlet end and outlet side, described Zero gas calibrating installation includes gas feed and gas vent, and the outlet of the first inlet end and filter of the triple valve connects Logical, the second inlet end is connected to the gas vent of zero gas calibrating installation, the outlet side of the triple valve and orifice metre It is connected, the gas outlet for detecting gas chamber is connected to the gas feed of zero gas calibrating installation.
2. harmful gas detection system as described in claim 1, it is characterised in that the zero gas calibrating installation include from The upper end cover with gas feed set gradually under, the first cylinder being detachably connected with upper end cover, can with the first cylinder Second cylinder of dismantling connection, the third cylinder being detachably connected with the second cylinder, and be detachably connected with third cylinder Lower end is provided with the bottom end cover of gas vent, wherein:The bottom of each cylinder is both provided with leachy back cover, and described It is provided with catalyst layer in first cylinder;It is provided with Strong oxdiative oxidant layer in second cylinder;It is provided in the third cylinder Active carbon layer.
3. harmful gas detection system according to claim 2, it is characterised in that:The first cylinder inner catalyst layer and Filter cotton is both provided between back cover and between catalyst layer and upper end cover.
4. according to the harmful gas detection system described in claim 2 or claim 3, it is characterised in that:Second cylinder It is provided with filter cotton between interior Strong oxdiative oxidant layer and back cover.
5. harmful gas detection system according to claim 2, it is characterised in that:In the third cylinder active carbon layer and Filter cotton is provided between back cover.
6. harmful gas detection system according to claim 2, it is characterised in that:Filtering is provided in the bottom end cover Cotton.
7. harmful gas detection system according to claim 2, it is characterised in that:The upper end cover and the first cylinder it Between, be all provided between the first cylinder and the second cylinder, between the second cylinder and third cylinder and between third cylinder and bottom end cover It is equipped with sealing ring.
8. harmful gas detection system according to claim 2, it is characterised in that:The bottom end cover and each cylinder upper end It is both provided with internal thread, the lower end of each cylinder and the upper end cover are both provided with the outer spiral shell to match with the internal thread Line.
9. harmful gas detection system according to claim 2, it is characterised in that:The bottom end cover and each cylinder upper end It is both provided with internal card slot, each cylinder lower end and the upper end cover are both provided with the buckle to match with the card slot.
CN201820391119.XU 2018-03-22 2018-03-22 harmful gas detection system Active CN208043626U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820391119.XU CN208043626U (en) 2018-03-22 2018-03-22 harmful gas detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820391119.XU CN208043626U (en) 2018-03-22 2018-03-22 harmful gas detection system

Publications (1)

Publication Number Publication Date
CN208043626U true CN208043626U (en) 2018-11-02

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Application Number Title Priority Date Filing Date
CN201820391119.XU Active CN208043626U (en) 2018-03-22 2018-03-22 harmful gas detection system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109580887A (en) * 2019-01-24 2019-04-05 北京雪迪龙科技股份有限公司 Gas monitoring system and monitoring method with zero gas generating device self-diagnostic function
CN109613184A (en) * 2019-01-24 2019-04-12 北京雪迪龙科技股份有限公司 A kind of gas monitoring system and gas monitoring method with zero gas inner circulation structure
CN110954532A (en) * 2019-11-28 2020-04-03 吉林大学 Soil nutrient detection device based on visual smell sense

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109580887A (en) * 2019-01-24 2019-04-05 北京雪迪龙科技股份有限公司 Gas monitoring system and monitoring method with zero gas generating device self-diagnostic function
CN109613184A (en) * 2019-01-24 2019-04-12 北京雪迪龙科技股份有限公司 A kind of gas monitoring system and gas monitoring method with zero gas inner circulation structure
CN110954532A (en) * 2019-11-28 2020-04-03 吉林大学 Soil nutrient detection device based on visual smell sense

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