CN207096186U - A kind of gas sampling device and gas detecting system - Google Patents
A kind of gas sampling device and gas detecting system Download PDFInfo
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- CN207096186U CN207096186U CN201720837073.5U CN201720837073U CN207096186U CN 207096186 U CN207096186 U CN 207096186U CN 201720837073 U CN201720837073 U CN 201720837073U CN 207096186 U CN207096186 U CN 207096186U
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Abstract
It the utility model is related to field of gas detection, especially to the detection of tail gas in production of polysilicon, a kind of gas sampling device and gas detecting system are disclosed, gas sampling device includes injector and carrier gas channel, carrier gas channel includes the tube wall for forming carrier gas passage, and injection port is offered on tube wall；Injector is arranged on the outside of injection port, and injector includes cylinder, is arranged at the air inlet pipe of cylinder and the piston being slidably disposed in cylinder, and air inlet is offered on the wall of cylinder；Air inlet pipe or injection port are provided with headstock gear, and headstock gear is used to connect or separate air inlet pipe and carrier gas channel.The sample presentation process simple and stable of gas sampling device, nothing are mingled with free of losses.Gas detecting system includes the gas sampling device, after gas is handled by pretreatment system, quantitatively inputs into gas sampling device, and free of losses without being mingled with is all sent into detection device by gas sampling device, and experiment is accurate, easy to operate.
Description
Technical field
Field of gas detection is the utility model is related to, especially for the detection of tail gas in production of polysilicon, specifically, is related to
And a kind of gas sampling device and gas detecting system.
Background technology
As the rapid development of solar energy industry, the whole world are growing to the demand of polysilicon, the product especially to polysilicon
Matter requires also more and more higher, but still can not realize the volume production of high-purity, ultra-pure electronic-grade polycrystalline silicon, to expect high-purity, superelevation
Pure electronic-grade polycrystalline silicon just needs to update technological parameter in process of production, improves detection means, monitors in whole material
Impurity content, the major impurity for influenceing product quality at present is exactly the impurity such as boron phosphorus, and wherein phosphorus impurities are main in exhaust system
To exist in the form of hydrogen phosphide, due to the particularity of hydrogen phosphide sample analysis, it is desirable to the sample introduction speed of gaseous sample is uniform, with
Hydrogen phosphide is set sufficiently to be separated, be enriched with adsorption column.For the gas of these contents very small (trace level and following)
Measure, existing way are that under test gas is passed into gas phase by the gas of enrichment after low temperature is enriched with and heats resolving
Analysis measure is carried out in chromatograph.But because specific quantitative loop in chromatograph to be passed through could be accurate during sample detection
Quantitative analysis, which increase the operation difficulty of experiment, and during quantitative loop is filled with, first to replace the gas in quantitative loop
Body, may also result in gas loss during substitution gas or filling is discontented, influence to test the degree of accuracy.
Utility model content
The purpose of this utility model is to provide a kind of gas sampling device, its can free of losses, without receiving biography with being mingled with
Defeated and next under test gas, sample introduction process is simplified, and experimental error is small.
Another object of the present utility model is to provide a kind of gas detecting system, and it can be simply and easily to be detected
Gas carries out sample presentation, and experimental error is small.
What embodiment of the present utility model was realized in：
A kind of gas sampling device, it includes injector and carrier gas channel,
Carrier gas channel includes the tube wall for forming carrier gas passage, and injection port is offered on tube wall；
Injector is arranged on the outside of injection port, and injector includes cylinder, the air inlet pipe for being arranged at cylinder and slideably
The piston being arranged in cylinder, air inlet is offered on the wall of cylinder；
Air inlet pipe or injection port are provided with headstock gear, and headstock gear is used to connect or separate air inlet pipe and carrier gas channel.
In one embodiment of the present utility model, headstock gear the entering for closing injection port of above-mentioned gas sample conveying device
Sample pad, air inlet pipe are hollow needle, and the free end of air inlet pipe is located in sample introduction pad, so that the free end sealing of air inlet pipe, enters
Tracheae can be mobile to carrier gas channel inside and then is inserted into carrier gas passage, so as to which cylinder be connected with carrier gas passage.
In one embodiment of the present utility model, the cylinder of above-mentioned gas sample conveying device is straight tube, the wall bag of cylinder
Include the side wall of tubular and the conical bottom wall positioned at barrel end, for bottom wall to protruding outside cylinder, air inlet pipe is located at the end of bottom wall.
In one embodiment of the present utility model, the piston of above-mentioned gas sample conveying device includes piston head, piston head court
There is the conical surface coordinated with bottom wall to the side of bottom wall.
In one embodiment of the present utility model, the air inlet of above-mentioned gas sample conveying device is located at bottom wall.
In one embodiment of the present utility model, above-mentioned gas sample conveying device also includes the first drive division, the first driving
Portion is used to drive piston to move in cylinder.
In one embodiment of the present utility model, the one end of cylinder away from air inlet pipe of above-mentioned gas sample conveying device is set
There is capping, the first drive division is provided with the inside of capping, piston also includes piston rod, and the first drive division is connected with piston rod, and
Piston can be driven to be moved in cylinder.
In one embodiment of the present utility model, above-mentioned gas sample conveying device also includes the second drive division, the second driving
Portion is used to driving injector overall closer or far from injection port, to cause air inlet pipe to be inserted into or through sample introduction pad.
In one embodiment of the present utility model, the sample introduction pad of above-mentioned gas sample conveying device is rubber.
A kind of gas detecting system, it includes gas pretreatment system, detection device and above-mentioned gas sampling device；
Gas pretreatment system is connected by pipeline with the air inlet of gas sampling device, and detection device connects with carrier gas channel.
The beneficial effect of the utility model embodiment is：
Carrier gas channel includes the tube wall for forming carrier gas passage, and injection port is offered on tube wall；Injector is arranged at injection port
Outside, injector include cylinder, are arranged at the air inlet pipe of cylinder and the piston being slidably disposed in cylinder, the wall of cylinder
Air inlet is offered on face；Air inlet pipe or injection port are provided with headstock gear, headstock gear be used to connecting or separate air inlet pipe with
Carrier gas channel.The pretreated gas of receiving that air inlet can be mingled with free of losses, nothing, it is temporarily stored in the cylinder of injector
In vivo.When needing gas being conveyed into follow-up detection device, the headstock gear of air inlet pipe is opened, gas can be passed through
Piston is squeezed into carrier gas channel completely, is then conveyed into using carrier gas in follow-up detection device.Whole sample presentation process is simply steady
Fixed, nothing is mingled with free of losses.
Gas detecting system includes gas pretreatment system, detection device and above-mentioned gas sampling device, gas and led to
After crossing pretreatment system processing, quantitatively input into gas sampling device, free of losses without being mingled with passes through gas sampling device
All it is sent into detection device, experiment is accurate, easy to operate.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of gas sampling device in the utility model embodiment；
Fig. 2 is the enlarged drawing of local I I in Fig. 1；
Fig. 3 is schematic diagram of the gas sampling device during sample presentation in the utility model embodiment；
Fig. 4 is the schematic diagram of gas detecting system in the utility model embodiment.
Icon：100- gas sampling devices；110- carrier gas channels；112- tube walls；114- sample introduction pads；120- supports；122-
Second plate body；130- injectors；131- cylinders；132- side walls；133- bottom walls；134- air inlets；135- air inlet pipe；136- is sealed
Lid；The drive divisions of 137- first；The plate bodys of 138- first；The drive divisions of 139- second；141- spacer pins；142- string holes；143- pistons；
200- gas detecting systems；210- gas pretreatment systems；212- heating baths；214- adsorption columns；216- stop valves；220- is detected
Equipment；222- chromatographic columns；224- detectors.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
, it is necessary to explanation, the orientation or position of the instruction such as term " interior ", " outer " in the description of the utility model embodiment
Put relation be based on orientation shown in the drawings or position relationship, or the utility model product using when the orientation usually put
Or position relationship, it is for only for ease of description embodiment of the present utility model and simplifies description, rather than indicates or imply and be signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
New limitation.In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint are relative
Importance.
In the description of the utility model embodiment, it is also necessary to explanation, unless otherwise clearly defined and limited, art
Language " setting ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or
It is integrally connected；Can be joined directly together, can also be indirectly connected by intermediary, can be the company of two element internals
It is logical.For the ordinary skill in the art, it can understand that above-mentioned term is specific in the utility model with concrete condition
Implication.
Embodiment
Fig. 1 is the structural representation of gas sampling device 100 in the utility model embodiment；It refer to Fig. 1, the present embodiment
A kind of gas sampling device 100 is provided, it includes carrier gas channel 110, the support being arranged in carrier pipe 120 and is arranged at
Injector 130 on support 120.Injector 130 can enter gas injection to be detected in carrier gas channel 110, then by carrier gas band
Move in the follow-up detection device 220 (see Fig. 4) of gas flow to be detected.(figure is not for the source of the gas of one end connection carrier gas of carrier gas passage
Show).The present embodiment can be used for the quantitative test experience to tail gas in production of polysilicon.
Carrier gas channel 110 is the pipeline for carrier gas circulation, the effect of carrier gas be with certain flow velocity carrier band gaseous sample or
Sample gas after gasification is separated into chromatographic column 222 (see Fig. 4) together, then each component after being separated is loaded into inspection
Survey device 224 to be detected (see Fig. 4), finally flow out chromatographic system emptying or collect, carrier gas has been carrier band and do not participated in substantially
Centrifugation.Available carrier gas has hydrogen, helium, nitrogen, argon, carbon dioxide etc., to the selection of carrier gas depending on detector 224 (see Fig. 4)
Depending on species.
Carrier gas channel 110 includes the tube wall 112 for forming carrier gas passage, and one is offered on the tube wall 112 of carrier gas channel 110
Injection port, a headstock gear is set, for controlling air-flow to enter carrier gas channel 110 on injection port.In the present embodiment, open and close
Device is a sample introduction pad 114, and sample introduction pad 114 closes injection port, to prevent carrier gas from outwardly dissipating, selective can also be opened
Open or close the end of air inlet pipe 135.In the present embodiment, sample introduction pad 114 is made of rubber.It should be appreciated that in this practicality
In new other embodiment, headstock gear can also be disposed on the valve of air inlet pipe 135, in the case, air inlet pipe 135
Connected with carrier gas channel 110.
Support 120 is fixedly installed on carrier gas channel 110, and positioned at the outside of injection port, support 120 and injector 130
It is flexibly connected, primarily serves the effect of support injector 130.In the present embodiment, support 120 is tubular support 120, its axis
Vertical with the axis of carrier gas channel 110, injector 130 is arranged inside support 120.It should be appreciated that utility model other
In embodiment, support 120 can also be what is be made up of multiple bodies of rod, as long as can play a part of supporting injector 130.
In the present embodiment, injector 130 includes cylinder 131, piston 143, air inlet pipe 135, the drive of capping 136 and first
Dynamic portion 137.Cylinder 131 is straight tube, and its section is circle.Container of the cylinder 131 as under test gas after temporary transient receiving parsing.
The wall of cylinder 131 includes the side wall 132 of tubular and the bottom wall 133 positioned at the end of cylinder 131.In the present embodiment
In, bottom wall 133 is shaped as taper, and it protrudes to outside cylinder 131, and air inlet pipe 135 is located at the end of the protrusion of bottom wall 133.Air inlet
Pipe 135 is straight pipe shape, and it is connected with the space inside cylinder 131, and its free end has opening.In the present embodiment, air inlet
Pipe 135 is coaxially disposed with cylinder 131.The material of air inlet pipe 135 can be stainless steel.
It should be appreciated that the position of air inlet pipe 135 can be arranged at bottom wall 133 in other embodiment of the present utility model
Other positions, can be with eccentric setting.It in other embodiments, can also be arranged to plate shaped according to actual conditions, bottom wall 133
Shape, without being limited to taper, the material of air inlet pipe 135 can use other rigid according to actual conditions.
In the present embodiment, cylinder 131 has air inlet 134, and cylinder is entered with the under test gas after facilitating heating to parse
Inside body 131.Alternatively, air inlet 134 is arranged on the bottom wall 133 of taper so that after piston 143 is shifted onto at bottom wall 133, according to
Gas can be so filled between piston 143 and bottom wall 133, and piston 143 is pushed to the opposite direction of injection direction, avoided
Gas loss.It should be understood that injection direction herein promotes for piston 143 to bottom wall 133, gas is released from air inlet pipe 135
Direction.
Because air inlet 134 needs to connect using pipeline with the air feed equipment outside cylinder 131, therefore, the wall of support 120
The string holes 142 for accommodating pipeline is offered on face, because injector 130 can move up and down relative to support 120, therefore string holes 142
Shape be designed as bar shaped, the bearing of trend of string holes 142 is consistent with the length direction of support 120.
The capping 136 of injector 130 is arranged at the one end of cylinder 131 away from air inlet pipe 135, covers 136 inner side setting
There is the first drive division 137, for driving piston 143 to be promoted to the bottom wall 133 of cylinder 131, so as to convey gas.Piston 143 wraps
Piston head and piston rod are included, piston head forms the cavity for accommodating under test gas, piston rod connection piston head with part cylinder 131
With the first drive division 137.In the present embodiment, the first drive division 137 can use hydraulic cylinder, in other realities of the present utility model
Apply in example, the first drive division 137 can also be cylinder, line motor etc..
In order that the space between piston head and capping 136 can be preferably vented, prevent air pressure from causing piston 143 to be difficult to
Motion, cover and be provided with steam vent (not shown) on 136.In order that piston 143 can drain in cylinder 131 completely when extruding
Gas, piston head have the conical surface coordinated with bottom wall 133 towards the side of bottom wall 133.
Fig. 2 is the enlarged drawing of local I I in Fig. 1.Referring to Fig.1 and 2, in order that air inlet pipe 135 can be partially penetrated into or
Sample introduction pad 114 is pierced through, with the purpose for reaching the closing free end of air inlet pipe 135 or being supplied gas to carrier gas channel 110.The phase of injector 130
It is axially movable at itself for support 120.Further, support 120 is provided with the second drive division being connected with cylinder 131
139, for driving injector 130 being axially moved.Alternatively, the second drive division 139 uses hydraulic cylinder, of the present utility model
In other embodiment, the second drive division 139 can also be cylinder, line motor etc..
In order to preferably dispose the second drive division 139, the first plate body 138, support 120 are provided with the outside of cylinder 131
Inner side be provided with the second plate body 122, the first plate body 138 and the second plate body 122 are each perpendicular to the axial direction of cylinder 131.First plate
Body 138 is located at the second plate body 122 towards the side of carrier gas channel 110.First drive division 137 is arranged at the first plate body 138 and
Between two plate bodys 122, and it is connected respectively with the first plate body 138 and the second plate body 122.Hydraulic cylinder drives as the second drive division 139
During dynamic injector 130, the first plate body 138 can be pushed up together with injector 130 to the direction where carrier gas channel 110, make sample introduction
Device 130 does axial displacement.In the present embodiment, to ensure the stability of motion, one is set respectively in the both sides of injector 130
Second drive division 139, it will be appreciated that in other embodiment of the present utility model, the number of the second drive division 139 can basis
Actual conditions are increased and decreased, and the installation site of the second drive division 139 can also change, for example are attached to whole injector 130
Top.
When being filled with test gas into cylinder 131, it is necessary to be sealed to the end of air inlet pipe 135, the way of use
It is among the air inlet pipe 135 of injector 130 is inserted partially into sample introduction pad 114, but does not pierce through sample introduction pad 114, utilizes sample introduction
Pad 114 seals the free end of air inlet pipe 135, then gas is inputted to cylinder 131 from air admission hole.In order to ensure not pierce through sample introduction
Pad 114, the precalculated position of support 120 offer spacing hole, cylinder 131 are carried out by inserting spacer pin 141 spacing.Work as cylinder
When body 131 drops to certain position and contacted with spacer pin 141, do not continue to move downward so that the end of air inlet pipe 135 is inserted in
It is unlikely to penetrate into sample pad 114 among sample introduction pad 114.When need to during 110 gas transmission of carrier gas channel, pull out spacer pin 141, then
Injector 130 is further moved down, air inlet pipe 135 pierces through sample introduction pad 114.It is appreciated that the length of air inlet pipe 135 should be more than
The thickness of sample introduction pad 114.Fig. 3 is schematic diagram of the gas sampling device 100 during sample presentation in the utility model embodiment, this
When air inlet pipe 135 pierce through sample introduction pad 114.
It should be appreciated that in other embodiment of the present utility model, sensor can also be set in the inner side of support 120, when
Cylinder 131 to carrier gas channel 110 be moved to certain position when, boost sensor, so as to know that it is pre- that air inlet pipe 135 has been inserted into
Positioning is put.In other embodiments, support 120 can also set transparent form, and the motion for observing injector 130 is entered
Journey.
Fig. 4 is the schematic diagram of gas detecting system 200 in the utility model embodiment.Fig. 4 is refer to, the utility model carries
A kind of gas detecting system 200 supplied, it includes gas pretreatment system 210, detection device 220 and gas sampling device
100.Gas pretreatment system 210 is enriched with to gas to be tested, parsed, and is then passed to gas sampling device 100, then
Follow-up detection device 220 is transferred to by gas sampling device 100.
In the present embodiment, gas pretreatment system 210 includes the cold-trap pond (not shown) for gas enrichment, for solving
The heating bath 212 of gassing body and the adsorption column 214 for collecting gas.Gas in adsorption column 214 leads to after heating parses
Pipelined is crossed to the air inlet 134 of gas sampling device 100 (see Fig. 1).Adsorption column 214 is to the pipeline between air inlet 134
On be provided with stop valve 216, to be turned on and off the cylinder 131 of air flow direction injector 130.
In the present embodiment, detection device 220 include be connected to carrier gas channel 110 chromatographic column 222 and with chromatographic column 222
The detector 224 of connection, gas to be detected are separated into chromatographic column 222 with carrier gas, examined subsequently into detector 224
Survey.
The operation principle of gas sampling device 100 and gas detecting system 200 is：
The gas after enrichment, parsing by gas pretreatment system 210 enters cylinder by pipeline from air inlet 134
In 131, now the free end of air inlet pipe 135 is inserted in sample introduction pad 114 thus is closing.Piston 143 increases with gas
And move up.After gas fully enters cylinder 131, stop valve 216 is closed, then starts the second drive device, injector 130 is whole
Body moves to carrier gas channel 110, and air inlet pipe 135 pierces through sample introduction pad 114, is connected with carrier channel.Then the first driving dress is started
Put, promote piston 143 to move down, and then gas to be detected is all squeezed into carrier gas channel 110, then by carrier gas channel 110
In carrier gas load gas to be detected and flow into detection device 220, detected.The free of losses of whole process gas, free from admixture addition,
Easy to operate stabilization, experimental precision are high.
In summary, gas sampling device of the present utility model, it includes injector and carrier gas channel, and carrier gas channel includes
The tube wall of carrier gas passage is formed, injection port is offered on tube wall；Injector is arranged on the outside of injection port, injector include cylinder,
The air inlet pipe of cylinder and the piston being slidably disposed in cylinder are arranged at, air inlet is offered on the wall of cylinder；Enter
Tracheae or injection port are provided with headstock gear, and headstock gear is used to connect or separate air inlet pipe and carrier gas channel.Air inlet can be with
The pretreated gas of receiving that free of losses, nothing are mingled with, is temporarily stored in the cylinder of injector.It is when needing that gas is defeated
When being sent into follow-up detection device, the headstock gear of air inlet pipe is opened, gas can be squeezed into carrier gas pipe by piston completely
In road, then it is conveyed into using carrier gas in follow-up detection device.Whole sample presentation process simple and stable, nothing are mingled with free of losses.
Gas detecting system includes gas pretreatment system, detection device and above-mentioned gas sampling device, gas and led to
After crossing pretreatment system processing, quantitatively input into gas sampling device, free of losses without being mingled with passes through gas sampling device
All it is sent into detection device, experiment is accurate, easy to operate.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (10)
- A kind of 1. gas sampling device, it is characterised in that the gas sampling device includes injector and carrier gas channel,The carrier gas channel includes the tube wall for forming carrier gas passage, and injection port is offered on the tube wall；The injector is arranged on the outside of the injection port, and the injector includes cylinder, is arranged at the air inlet pipe of the cylinder And the piston in the cylinder is slidably disposed in, offer air inlet on the wall of the cylinder；The air inlet pipe or the injection port are provided with headstock gear, and the headstock gear is used to connect or separate the air inlet pipe With the carrier gas channel.
- 2. gas sampling device according to claim 1, it is characterised in that the headstock gear is the closing injection port Sample introduction pad, the air inlet pipe is hollow needle, and the free end of the air inlet pipe is located in the sample introduction pad so that it is described enter The free end sealing of tracheae, the air inlet pipe can be to moving inside the carrier gas channel and then are inserted into the carrier gas passage It is interior, so as to which the cylinder be connected with the carrier gas passage.
- 3. gas sampling device according to claim 2, it is characterised in that the cylinder is straight tube, the wall of the cylinder The side wall and the conical bottom wall positioned at the barrel end in face including tubular, the bottom wall are described to protruding outside the cylinder Air inlet pipe is located at the end of the bottom wall.
- 4. gas sampling device according to claim 3, it is characterised in that the piston includes piston head, the piston Head has the conical surface coordinated with the bottom wall towards the side of the bottom wall.
- 5. gas sampling device according to claim 3, it is characterised in that the air inlet is located at the bottom wall.
- 6. gas sampling device according to claim 1, it is characterised in that the gas sampling device also includes first and driven Dynamic portion, first drive division are used to drive the piston to move in the cylinder.
- 7. gas sampling device according to claim 2, it is characterised in that the one end of the cylinder away from the air inlet pipe Capping is provided with, the first drive division is provided with the inside of the capping, the piston also includes piston rod, first drive division It is connected with the piston rod, and the piston can be driven to be moved in the cylinder.
- 8. gas sampling device according to claim 2, it is characterised in that the gas sampling device also includes second and driven Dynamic portion, second drive division is used to drive the injector overall closer or far from the injection port, to cause the air inlet Pipe is inserted into or through the sample introduction pad.
- 9. gas sampling device according to claim 2, it is characterised in that the sample introduction pad is rubber.
- 10. a kind of gas detecting system, it is characterised in that it includes gas pretreatment system, detection device and as right will Seek the gas sampling device described in 1 to 9 any one；The gas pretreatment system passes through pipeline and the gas sampling device Air inlet connects, and the detection device connects with the carrier gas channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720837073.5U CN207096186U (en) | 2017-07-11 | 2017-07-11 | A kind of gas sampling device and gas detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720837073.5U CN207096186U (en) | 2017-07-11 | 2017-07-11 | A kind of gas sampling device and gas detecting system |
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| CN207096186U true CN207096186U (en) | 2018-03-13 |
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| CN201720837073.5U Active CN207096186U (en) | 2017-07-11 | 2017-07-11 | A kind of gas sampling device and gas detecting system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044536A (en) * | 2019-05-17 | 2019-07-23 | 大唐半导体科技有限公司 | A kind of gas-detecting device |
| CN116879512A (en) * | 2023-09-06 | 2023-10-13 | 深圳市古古美美实业有限公司 | Household environment quality monitoring center device |
-
2017
- 2017-07-11 CN CN201720837073.5U patent/CN207096186U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110044536A (en) * | 2019-05-17 | 2019-07-23 | 大唐半导体科技有限公司 | A kind of gas-detecting device |
| CN116879512A (en) * | 2023-09-06 | 2023-10-13 | 深圳市古古美美实业有限公司 | Household environment quality monitoring center device |
| CN116879512B (en) * | 2023-09-06 | 2023-11-14 | 深圳市古古美美实业有限公司 | Household environment quality monitoring center device |
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