CN207516208U - Gas-detecting device - Google Patents
Gas-detecting device Download PDFInfo
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- CN207516208U CN207516208U CN201721468993.0U CN201721468993U CN207516208U CN 207516208 U CN207516208 U CN 207516208U CN 201721468993 U CN201721468993 U CN 201721468993U CN 207516208 U CN207516208 U CN 207516208U
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- detecting device
- ventilation shaft
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Abstract
A kind of gas-detecting device is disclosed, for detecting the gas in ventilation shaft, which is characterized in that including：Sampling unit, for collecting gas to be detected；Detection unit, for detecting gas to be detected；Hose, between connection and sampling unit and the detection unit；Wherein, detection unit, including：Sensing module group, including multiple sensing modules, for perceiving various composition concentration in gas；Microprocessor for controlling gas flow, and computes and compensates for gas measurement；Communication interface, for outputting measurement value signal.Sampling unit includes：Screen pipe；Outlet nozzle connects screen pipe with hose；Fixing piece, for screen pipe and outlet nozzle to be fixed on to the duct wall of ventilation shaft so that screen pipe is at least partially disposed inside ventilation shaft.By being located at the fixing piece of sampling unit, the tube wall that sampling unit is fixed on to ventilation shaft not only facilitates the installation and maintenance of detection unit, but also can extend the service life of detection unit.
Description
Technical field
The utility model is related to detection technique fields, relate more specifically to a kind of gas-detecting device.
Background technology
The gas-detecting device for being used to detect ventilation shaft internal gas of the prior art, is divided into two kinds of situations：One kind is
Detection unit is placed on inside the ventilation shaft of closing, for detection gas, since ventilation shaft is closing, for
The program of installation and the maintenance of detection unit is cumbersome, while the dust inside ventilation shaft is more, can easily cause detection unit into
Air port blocks, and can not ensure the normal operation that detection unit is stablized over a long time；Another kind is that detection unit is placed on ventilation duct
At the return air inlet in road, gas is extracted using air pump is installed outside detector, and external air pump can improve detector cost, and gas
The pump service life itself is shorter.So that maintenance cost is higher；Simultaneously because being influenced by external environment, therefore it can generate and be detected
As a result deviation is had.
Further, since the gas flow inside ventilation shaft is unstable, and PM2.5 measured values and the close phase of gas flow
It closes, therefore when detection unit is located inside ventilation shaft, PM2.5 measured value deviations can be caused larger, so as to influence gas inspection
Survey result.
Utility model content
Problem to be solved in the utility model is to provide a kind of detection unit, by the fixation for being located at sampling unit
Sampling unit need to be only fixed on the tube wall of ventilation shaft, for acquiring gas to be detected, not only facilitate detection unit by part
Installation and maintenance, and the service life of detection unit can be extended.
According to a kind of gas-detecting device provided by the utility model, including：For detecting the gas in ventilation shaft,
It is characterized in that, including：Sampling unit, for collecting gas to be detected；Detection unit, for detecting gas to be detected；It is soft
Pipe, is connected between the sampling unit and the detection unit；Wherein, the detection unit, including：Sensing module group, packet
Multiple sensing modules are included, for perceiving various composition concentration in the gas；Microprocessor, for controlling the gas flow,
And compute and compensate for the gas measurement；Communication interface, for exporting the measured value signal.The sampling unit includes：
Screen pipe；Outlet nozzle connects the screen pipe with the hose；Fixing piece, for by the screen pipe and the outlet
Mouth is fixed on the duct wall of the ventilation shaft so that the screen pipe is at least partially disposed inside the ventilation shaft.
Preferably, the sampling unit further includes：Extension tube, between the screen pipe and the outlet nozzle.
Preferably, the screen pipe is vertical with the pipeline, and the screen pipe includes：First air inlet, positioned at the mistake
The peripheral surface of chimney filter；And filter core, in the screen pipe.
Preferably, the detection unit, including the second air inlet, exhaust outlet, second air inlet, the exhaust outlet,
The sensing module group and the communication interface are connect respectively with the picoprocessor signal, wherein, the gas is from institute
The second air inlet is stated into the detection unit, the information sensed is transmitted in described micro- by the sensing module group by signal
Device is managed, the measured value signal is transmitted in the communication interface and the exhaust outlet by the microprocessor again.
Preferably, the detection unit further includes：Wind turbine is connected with second air inlet, and with the microprocessor
Device signal connects, and information that the microprocessor detects in real time according to the sensing module group controls the rotating speed of the wind turbine,
Enter the flow velocity of second air inlet for the constant gas.
Preferably, the multiple sensing module includes：Gas flow sensor, Temperature Humidity Sensor, particulate matter sensors,
At least two in carbon dioxide sensor, volatile organic compound sensor, carbon monoxide transducer, formaldehyde sensor
It is a.
Preferably, the communication interface is wire communication interface or wireless communication interface.
Preferably, the hose is antistatic hose.
Preferably, the connection of connection and the outlet nozzle and the hose of the screen pipe with the outlet nozzle is gas
Close property connection.
Preferably, connection and the extension tube and the connection of the outlet nozzle of the screen pipe with the extension tube be
Air-tightness connects.
Gas-detecting device according to the present utility model includes sampling unit, detection unit and hose, wherein sampling is single
Member is fixed on by fixing piece on the tube wall of ventilation shaft, and screen pipe is fixed on inside ventilation shaft, for acquiring
The gas to be detected.Detection unit in this way outside ventilation shaft can not only accurately detect the gas inside ventilation shaft
Body, and facilitate the installation and maintenance of detection unit, so as to improve the working efficiency of staff.Simultaneously when detection unit is located at
When outside ventilation shaft, it is possible to reduce detection unit contact with dust in ventilation shaft reduces detection unit due to dust mistake
It damages, so as to extend the service life of the gas-detecting device more.
In addition, detection unit includes wind turbine, gas flow sensing excessive by working as its gas flow inside ventilation shaft
Gas flow signals are transferred to microprocessor by device, reconcile the rotation speed of fan being connected with microprocessor, are changed and are entered detection list
Gas flow inside member so as to accurately measure PM2.5 information in gas, finally obtains reliable gas detection knot
Fruit.
Description of the drawings
By referring to the drawings to the description of the utility model embodiment, above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from.
The stereogram and three-dimensional exploded view of the gas-detecting device of the utility model is shown respectively in Fig. 1 and Fig. 2；
The stereogram and stereo decomposing of the sampling unit of the gas-detecting device of the utility model is shown respectively in Fig. 3 and Fig. 4
Figure；
Fig. 5 shows the schematic diagram of the detection unit of the gas-detecting device of the utility model.
Specific embodiment
Hereinafter reference will be made to the drawings is more fully described the utility model.In various figures, identical element is using similar
Reference numeral represent.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.It in addition, may in figure
Certain well known parts are not shown.
Many specific details of the utility model, such as the structure of component, material, size, place is described hereinafter
Science and engineering skill and technology, to be more clearly understood that the utility model.But just as the skilled person will understand,
The utility model can not be realized according to these specific details.
It should be appreciated that in the structure for describing component, it is known as when by a floor, a region positioned at another floor, another area
When domain " above " or " top ", can refer to above another layer, another region or its with another layer, it is another
Also comprising other layers or region between a region.Also, if by part turnover, this layer, a region will be located at it is another
Layer, another region " following " or " lower section ".
The stereogram and three-dimensional exploded view of the gas-detecting device of the utility model is shown respectively in Fig. 1 and Fig. 2.This practicality is new
The gas-detecting device of type is made of sampling unit 100, detection unit 200 and 300 three parts of hose.Hose 300 will sample
Unit 100 is connected with detection unit 200 so that the gas that sampling unit 100 is acquired can be entered by hose 300 to be detected
In unit 200, and then the gas acquired can be detected.Hose 300 can be formed by the material preparation of antistatic.
Wherein, sampling unit 100 is fixed on the tube wall of ventilation shaft 900, can be set open on 100 corresponding tube wall of sampling unit
Mouthful so that sampling unit 100 is at least partially disposed in inside ventilation shaft 900, and sampling unit 100 and ventilation shaft 900
Tube wall can be fixed for air-tightness.Detection unit 200 can be fixedly mounted on metope or cabinet.
Fig. 3 and Fig. 4 shows the stereogram and three-dimensional exploded view of the sampling unit of the gas-detecting device of the utility model.This
The sampling unit 100 of utility model includes screen pipe 110, outlet nozzle 120 and fixing piece 130.Wherein screen pipe 110 includes the
One air inlet 112 and filter core 111, the first air inlet 112 can be located at the free end of 110 peripheral surface of screen pipe；Filter core 111 can
Being located in screen pipe 110, for filtering the impurity in ventilation shaft internal gas, the impurity of bulky grain is avoided to fill detection
The blocking and damage put；Simultaneously the filter core 111 be dismountable, can facilitate in this way the filter core 111 long to usage time into
Row is replaced or cleaning.One end of outlet nozzle 120 is connected with the connecting pin of screen pipe 110, and the two connection can be that screw thread connects
It connects, in order to which this is made to be threaded to air-tightness connection, can Airtight gasket be set between outlet nozzle 120 and screen pipe 110；Go out
The other end of gas nozzle 120 is connect with hose 300, this is connected as being tightly connected, the outlet nozzle 120 can be by rubber either its
He is prepared suitable material.Extension tube 140, extension tube 140 can be set between screen pipe 110 and outlet nozzle 120
It can be that one or more is used to extend sampling unit, be suitable for adopting the gas device of various sizes of ventilation shaft 900
Collection；The connecting pin of screen pipe 110 can with the connection of the connection of extension tube 140 and extension tube 140 and outlet nozzle 120 simultaneously
It is that air-tightness is threadedly coupled.Fixing piece 130 can be ring flange, the ring flange can be connected through a screw thread or welding manner with
The tube wall of ventilation shaft 900 is fixed, and screen pipe 110 or extension tube 140 can be by the openings on tube wall, and pass through this
Ring flange is fixed on the corresponding position of tube wall opening, forms the connection of sampling unit 100 and tube wall.In addition, fixing piece 130 also may be used
To be cutting ferrule is fixed or other are suitable fixed form.
The sampling unit 100 of the gas-detecting device of the utility model is fixed on ventilation shaft 900 by fixing piece 130
On tube wall, and screen pipe 110 is fixed on inside ventilation shaft 900, for acquiring gas to be detected.It is located at so logical
Detection unit outside wind pipeline 900 can not only accurately detect the gas inside ventilation shaft 900, and facilitate detection unit
200 installation and maintenance, so as to improve the working efficiency of staff.Simultaneously when detection unit 200 is located at outside ventilation shaft 900
During portion, it is possible to reduce the contact with dust in ventilation shaft 900 of detection unit 200 reduces detection unit 200 since dust is excessive
And damage, so as to extend the service life of the gas-detecting device.
Fig. 5 shows the schematic diagram of the detection unit of the gas-detecting device of the utility model.Detection unit 200 includes second
Air inlet 210, exhaust outlet 220, sensing module group 230, communication interface 240, wind turbine 270 and microprocessor 260.Pass through sampling
Ventilation shaft 900 is connected by unit 100,300 and second air inlet of hose with detection unit 200.Wherein, sensing module group
230 are respectively including multiple sensing modules：Gas flow sensor, Temperature Humidity Sensor, particulate matter sensors, carbon dioxide pass
Sensor, volatile organic compound sensor, carbon monoxide transducer, baroceptor, formaldehyde sensor etc..Communication interface
240 include wired communication interface, such as RS485 interfaces, RS232 interface and wireless communication interface 240, such as WIFI.Detection
Microprocessor 260 in unit 200 respectively with the second air inlet 210, exhaust outlet 220,230 groups of sensor, communication interface 240,
And 270 signal of wind turbine connection.Communication interface 240 can show gas flow parameter, humiture under the control of microprocessor 260
Parameter, fine particle (PM2.5-PM10) parameter value, carbon dioxide parameter value, volatile organic compound (TVOC) parameter
Value, carbon monoxide parameter value, formaldehyde (HCHO) parameter value etc..Microprocessor 260 can be according to the signal of gas flow sensor
Reconcile the rotating speed of wind turbine 270, constant gas enters the flow velocity of the second air inlet 210 so that into the gas stream of detection unit
Amount is consistent, so that it is guaranteed that detection fine particle is more accurate.Exhaust outlet 220 detects the gas of completion for discharging.
Gas in ventilation shaft enters detection unit 200 by the second air inlet 210, is contacted with sensing module group 230,
The information sensed is transmitted in microprocessor 260 by sensing module group 230 by signal form, and microprocessor 260 sends out signal control
The detection information that the exhaust of exhaust outlet 220 processed and communication interface 240 are exported.
Air pressure inside ventilation shaft 900 is less than extraneous air pressure, and as negative pressure, baroceptor passes negative pressure signal
Microprocessor 260 is passed, microprocessor 260 sends out signal control wind turbine 270 so that gas is passed through sampling unit by wind turbine 270
100 and hose 300 be pumped into detection unit 200, while microprocessor 260 adjust wind turbine 270 rotating speed, it is ensured that enter detection
The gas flow of unit 200 is consistent, and final measured value is shown by communication interface 240.
Air pressure inside ventilation shaft 900 is more than extraneous air pressure, as positive pressure, and gas flow sensor is by gas stream
Signal transmission is measured to microprocessor 260,270 rotating speed of wind turbine being connected with microprocessor 260 is adjusted, changes and enter empty detector
Gas flow inside 200 avoids measured value from generating larger deviation, so as to accurately measure PM2.5 information in gas,
Finally by 240 output gas testing result of communication interface.
In addition, sensing module group 230 is measured according to the gas of acquisition, measured value is exported to microprocessor 260；By
After microprocessor 260 carries out temperature and humidity compensation to measured value, then value is measured by communication interface 240 and is exported.The gas is examined
The wet temp compensation for surveying device can be physical compensation, such as particulate matter compensation etc.；It can also be gas compensation, such as titanium dioxide
Carbon, carbon monoxide, volatile organise compound, formaldehyde compensation etc..
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any this practical relationship or sequence.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only will including those
Element, but also including other elements that are not explicitly listed or further include as this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
Also there are other identical elements in process, method, article or equipment including the element.
Embodiment according to the utility model as described above, these embodiments there is no all details of detailed descriptionthe,
Also it is only the specific embodiment not limit the utility model.Obviously, as described above, many modification and change can be made
Change.This specification is chosen and specifically describes these embodiments, and being should in order to preferably explain the principle and reality of the utility model
With so as to enable skilled artisan's repairing using the utility model and on the basis of the utility model well
Change use.The utility model is limited only by the claims and their full scope and equivalents.
Claims (10)
1. a kind of gas-detecting device, for detecting the gas in ventilation shaft, which is characterized in that including：
Sampling unit, for collecting gas to be detected；
Detection unit, for detecting gas to be detected；
Hose is connected between the sampling unit and the detection unit；
Wherein, the detection unit, including：
Sensing module group, including multiple sensing modules, for perceiving various composition concentration in the gas；
Microprocessor for controlling the flow of the gas, and computes and compensates for the measured value of the gas；
Communication interface, for exporting the signal of the measured value；
The sampling unit includes：
Screen pipe；
Outlet nozzle connects the screen pipe with the hose；
Fixing piece, for the screen pipe and the outlet nozzle to be fixed on to the duct wall of the ventilation shaft so that institute
Screen pipe is stated to be at least partially disposed inside the ventilation shaft.
2. gas-detecting device according to claim 1, which is characterized in that the sampling unit further includes：
Extension tube, between the screen pipe and the outlet nozzle.
3. gas-detecting device according to claim 1, which is characterized in that the screen pipe is vertical with the pipeline, institute
Screen pipe is stated to include：
First air inlet, positioned at the peripheral surface of the screen pipe；And
Filter core, in the screen pipe.
4. gas-detecting device according to claim 1, which is characterized in that the detection unit further includes the second air inlet
Mouthful, exhaust outlet, second air inlet, the exhaust outlet, the sensing module group and the communication interface respectively with it is described
Microprocessor signals connect, wherein,
The gas enters the detection unit from second air inlet, and the sensing module group is by the information sensed by believing
Number the microprocessor is transmitted in, the measured value signal is transmitted in the communication interface by the microprocessor again.
5. gas-detecting device according to claim 4, which is characterized in that the detection unit further includes：
Wind turbine is connected with second air inlet, and is connect with the microprocessor signals, and the microprocessor is according to
The information that sensing module group detects in real time controls the rotating speed of the wind turbine, enters second air inlet for the constant gas
The flow velocity of mouth.
6. gas-detecting device according to claim 4, which is characterized in that the multiple sensing module includes：Gas stream
Quantity sensor, Temperature Humidity Sensor, particulate matter sensors, carbon dioxide sensor, volatile organic compound sensor, one
Aoxidize at least two in carbon sensor, formaldehyde sensor.
7. gas-detecting device according to claim 4, which is characterized in that the communication interface for wire communication interface or
Person's wireless communication interface.
8. gas-detecting device according to claim 1, which is characterized in that the hose is antistatic hose.
9. gas-detecting device according to claim 1, which is characterized in that the connection of the screen pipe and the outlet nozzle
And the connection of the outlet nozzle and the hose is connected for air-tightness.
10. gas-detecting device according to claim 2, which is characterized in that the screen pipe and the company of the extension tube
It connects and the connection of the extension tube and the outlet nozzle is air-tightness connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721468993.0U CN207516208U (en) | 2017-11-07 | 2017-11-07 | Gas-detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721468993.0U CN207516208U (en) | 2017-11-07 | 2017-11-07 | Gas-detecting device |
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| Publication Number | Publication Date |
|---|---|
| CN207516208U true CN207516208U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721468993.0U Active CN207516208U (en) | 2017-11-07 | 2017-11-07 | Gas-detecting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611369A (en) * | 2019-01-16 | 2019-04-12 | 北京英视睿达科技有限公司 | Monitor control method and device |
| CN112033865A (en) * | 2020-09-14 | 2020-12-04 | 北京中立格林传感科技股份有限公司 | Gas detection system and detection method |
| CN112577947A (en) * | 2020-11-19 | 2021-03-30 | 万物可测(重庆)大数据有限公司 | Formaldehyde detection device with data transmission function and detection method thereof |
| CN112730526A (en) * | 2020-12-08 | 2021-04-30 | 江苏锐科芯科技有限公司 | Low-energy-consumption semiconductor type gas sensor |
-
2017
- 2017-11-07 CN CN201721468993.0U patent/CN207516208U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611369A (en) * | 2019-01-16 | 2019-04-12 | 北京英视睿达科技有限公司 | Monitor control method and device |
| CN112033865A (en) * | 2020-09-14 | 2020-12-04 | 北京中立格林传感科技股份有限公司 | Gas detection system and detection method |
| WO2022052319A1 (en) * | 2020-09-14 | 2022-03-17 | 北京中立格林传感科技股份有限公司 | Gas detection system and detection method |
| GB2614967A (en) * | 2020-09-14 | 2023-07-26 | Tongdy Sensing Tech Beijing Co Ltd | Gas detection system and detection method |
| CN112577947A (en) * | 2020-11-19 | 2021-03-30 | 万物可测(重庆)大数据有限公司 | Formaldehyde detection device with data transmission function and detection method thereof |
| CN112730526A (en) * | 2020-12-08 | 2021-04-30 | 江苏锐科芯科技有限公司 | Low-energy-consumption semiconductor type gas sensor |
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