CN208902486U - A kind of gas sampling device - Google Patents
A kind of gas sampling device Download PDFInfo
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- CN208902486U CN208902486U CN201821571914.3U CN201821571914U CN208902486U CN 208902486 U CN208902486 U CN 208902486U CN 201821571914 U CN201821571914 U CN 201821571914U CN 208902486 U CN208902486 U CN 208902486U
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Abstract
The utility model discloses a kind of gas sampling devices, are related to chemical process automation technical field.The present apparatus includes multiple gas sampling cells and cuts a gas transportation facilities more one；Are connected to corresponding with the outlet of multiple gas sampling cells of multiple entrances for more cutting a gas transportation facilities form a plurality of gas sampled transfer pipeline, cut a gas transportation facilities more and are used to control the connection of a plurality of gas sampled transfer pipeline or closing and convey gas；Gas sampling cell includes for acquiring the gas sampling device of gas to be detected, the air-extractor for providing pumping power for gas sampling device and the gas storage for storing gas sampled in area to be tested；The entrance of gas sampling device is in area to be tested, the outlet of gas sampling device is connected to the entrance of air-extractor, the outlet of air-extractor is connected to the entrance of gas storage, and the outlet of gas storage is connected to the entrance for more cutting a gas transportation facilities.Sampling and detection accuracy can be improved in the device.
Description
Technical field
The utility model relates to chemical process automation technical field more particularly to a kind of gas sampling devices.
Background technique
Selective catalytic reduction (Selective Catalytic Reduction, SCR) refers to the effect in catalyst
Under, using reducing agent (such as NH3, liquefied ammonia, urea) come " selective " with the NO in flue gasxIt reacts and generates nontoxic and pollution-free
N2And H2O.Its chemical equation are as follows: 4NO+4NH3+O2→4N2+6H2O；2NO2+4NH3+O2→3N2+6H2O；6NO2+8NH3→
7N2+12H2O.Reaction temperature is often at 230~450 DEG C.After SCR denitration device is often arranged in boiler flue outlet, dust-extraction unit enters
Before mouthful, flue gas sampling device has usually been arranged in the entrance of current SCR denitration device, outlet port.
Flue gas sampling device is often single-point sampling at present, and denitration exiting flue gas has serious, high-temperature high dust of turbulent flow etc.
Feature；Flue has the characteristics that straight tube diameter is short, variable diameter is more or corner is more；SCR denitration device region flow field is complicated and changeable, and by cigarette
Temperature degree influences big；SCR region domain flue gas flow rate is fast, and CEMS analysis meter analysis flue gas is slow, and flue gas inspection has delay.Therefore it is existing
Have flue gas sampling device to have the following problems: 1. sample points are single, and taken flue gas cannot show entire SCR cigarette without representativeness
Flue gas characteristic in road helps the detection of subsequent CEMS instrument little.2. only extracting flue gas, examined for subsequent CEMS analysis meter
It surveys, the environment where flue gas is not acquired and processing means, having lost part has valuable help for subsequent denitration process
Parameter.3. not considering the objective circumstances that smoke sampling is fast and CEMS instrumental analysis is slow, the numerical value for causing CEMS to analyze is deposited
It is lagging, is being unfavorable for subsequent denitration process.
Utility model content
In view of this, the utility model embodiment provides a kind of gas sampling device, main purpose is to solve gas to take
Sampling device designs the unreasonable problem for leading to gas detection inaccuracy.
In order to achieve the above objectives, the utility model mainly provides following technical solution:
On the one hand, the utility model embodiment provides a kind of gas sampling device, including multiple gas sampling cells and
A gas transportation facilities are cut one more；The multiple entrances and multiple gas sampling cells for cutting a gas transportation facilities more
The corresponding connection in outlet to form a plurality of gas sampled transfer pipeline, it is described that cut a gas transportation facilities described more for controlling is more
The connection or closing of gas sampled transfer pipeline, and the gas sampled in connecting pipeline is delivered to other processes；
Wherein, the gas sampling cell includes that the gas sample for acquiring gas to be detected in area to be tested is set
The standby, air-extractor for providing pumping power for the gas sampling device and the gas storage for storing gas sampled
Equipment；The entrance of the gas sampling device is in the area to be tested, the outlet of the gas sampling device with it is described
The entrance of air-extractor is connected to, and the outlet of the air-extractor is connected to the entrance of the gas storage, and the gas is deposited
The outlet of storage equipment is connected to more with the entrances for cutting a gas transportation facilities.
Preferably, the gas sampling device is gas sample tube；The air-extractor is the gas pump of pressure adjustable；
The gas storage is gas storage tanks；A gas transportation facilities of cutting are to cut flow control valve more more.
Preferably, the gas sampling device is installed in the flue of SCR denitration device, for the flue gas to flue into
Row is sampled and is conveyed.
Preferably, the gas sampling device is fixed in the area to be tested；The gas sampling device
Outlet is connected in the outside of the area to be tested by pipeline with the entrance of the air-extractor, the outlet of the air-extractor
It is connected in the outside of the area to be tested by pipeline with the entrance of the gas storage, the gas storage
It exports and is connected in the outside of the area to be tested by pipeline with the entrances for cutting a gas transportation facilities morely.
Preferably, described, cut a gas transportation facilities selects a gas from a plurality of gas sampled transfer pipeline more
Body transfer pipeline is connected to, and other gas transfer pipelines are simultaneously closed off.
Preferably, the multiple gas sampling cell is in arranged in matrix in the area to be tested.
Preferably, the gas sampling cell include feedforward monitoring case, the feedforward monitoring case be fixed at described in
In detection zone and adjacent to the gas sampling device；The gas temperature for detection gas temperature is equipped in the feedforward monitoring case
Spend sensor and the gas concentration sensor for detection gas concentration, the probe of the gas temperature sensor and the gas
The probe of concentration sensor is in the area to be tested.
Preferably, the gas concentration sensor is nitric oxide concentration detection sensor；The gas temperature sensing
The output end of the output end of device and the gas concentration sensor is connect with the entrance of comprehensive cable connector, the comprehensive cable
The outlet of connector is connect by comprehensive cable pipe with external device.
On the other hand, the utility model embodiment provides a kind of gas detecting system, and the gas detecting system includes
Above-mentioned gas sampler and gas analysis arrangement, the outlets for cutting a gas transportation facilities of the gas sampling device more
It is connected to by gas delivery main road with the gas analysis arrangement.
Preferably, the gas analysis arrangement is gas analysis instrument, it to be used for detection gas temperature, gas humidity, gas
Body content, gas pressure or gas flow rate.
Compared with prior art, the utility model has the beneficial effects that
The gas sampling device of the utility model is single for traditional flue gas sampling device sample point, and sampling flue gas can not be quasi-
Really representing practical flue gas characteristic causes the disadvantage of subsequent gases testing result inaccuracy, and multiple gas are arranged using in area to be tested
Body sampler realizes that multidraw accurately to detect practical flue gas characteristic as far as possible, is stored up using real-time gas sampling, gas
The new gas sampling structure design deposit, conveyed in real time is to avoid area to be tested since the influence such as flue-gas temperature and flow velocity is (disorderly
Serious, high-temperature high dust of stream etc.), guarantee the accuracy of later period gas characteristic detection, using multiple gas sampling cells and a gas
The mode of body analytical equipment connection, multiple portions (the multiple areas of such as flue can be detected using a gas analysis arrangement by realizing
Domain) gas componant, enhancing gas detection is representative, improves detection accuracy, and reduce entire testing cost, is suitble in industry
Upper popularization and application.
Detailed description of the invention
Fig. 1 is gas sampling device structural schematic diagram provided by the embodiment of the utility model；
Fig. 2 is the feedforward monitoring case structural schematic diagram of gas sampling device provided by the embodiment of the utility model；
Fig. 3 is gas detecting system structural schematic diagram provided by the embodiment of the utility model.
Appended drawing reference
1 SCR flue；2 gas sampling cells, 21 gas sampling devices, 22 air-extractors, 23 gas storages, before 24
Present monitoring case, 241 gas temperature sensors, 242 gas concentration sensors, 243 comprehensive cable connectors, 244 comprehensive cable pipes；3
Cut a gas transportation facilities more；4 gas delivery main roads；5 gas analysis arrangements.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below with preferred embodiment, to specific embodiment, technical solution, feature and its effect according to the present utility model application, in detail
It describes in detail bright as after.The special characteristic, structure or feature in multiple embodiments in following the description can be by any suitable form group
It closes.
Embodiment 1
As shown in Figure 1, a kind of gas sampling device, including multiple gas sampling cells 2 and gas conveying being cut one more
Equipment 3；The above-mentioned multiple entrances connection corresponding with the outlet of multiple above-mentioned gas sampling units 2 for cutting a gas transportation facilities 3 more
To form a plurality of gas sampled transfer pipeline, above-mentioned that cut a gas transportation facilities 3 defeated for controlling above-mentioned a plurality of gas sampled is more
The connection or closing of pipeline are sent, and the gas sampled in connecting pipeline is delivered to other processes；Wherein, above-mentioned gas sampling is single
Member 2 includes for acquiring the gas sampling device 21 of gas to be detected in area to be tested, for being above-mentioned gas sampling equipment
The air-extractor 22 of pumping power and the gas storage 23 for storing gas sampled are provided；Above-mentioned gas sampling equipment
Entrance is in above-mentioned area to be tested, and the outlet of above-mentioned gas sampling equipment 21 is connected to the entrance of above-mentioned air-extractor 22,
The entrance of the outlet of above-mentioned air-extractor 22 and above-mentioned gas storage equipment 23 be connected to, above-mentioned gas store equipment 23 outlet and
The above-mentioned entrance connection for cutting a gas transportation facilities 3 more.
As the preferred of above-described embodiment, above-mentioned gas sampling equipment 21 is gas sample tube；Above-mentioned air-extractor 22 is
The gas pump of pressure adjustable, the outlet pressure pumped by regulating gas, it is ensured that the gas extracted in each probe tube enters storage
Time consistency in equipment；It is that gas stores surge tank that above-mentioned gas, which stores equipment 23,；Cut a gas transportation facilities 3 above-mentioned is more
Cut flow control valve, which has multiple entrances, only one outlet, controls by relay, in the same time only more
The entrance for having only one to determine is connected to gas delivery main road.
As the preferred of above-described embodiment, above-mentioned gas sampler is installed in the flue 1 of SCR denitration device, is used for
The flue gas of flue 1 is sampled, stored and transferred out.
As the preferred of above-described embodiment, above-mentioned gas sampling equipment is fixed in above-mentioned area to be tested, each
Gas sampling device is responsible for extracting the gas (such as flue gas) in the region；The outlet of above-mentioned gas sampling equipment and above-mentioned pumping
The entrance of equipment is connected in the outside of above-mentioned area to be tested by pipeline, and the outlet of above-mentioned air-extractor and above-mentioned gas store
The entrance of equipment is connected in the outside of above-mentioned area to be tested by pipeline, and the outlet of above-mentioned gas storage equipment is cut more with above-mentioned
The entrance of one gas transportation facilities is connected in the outside of above-mentioned area to be tested by pipeline.
As the preferred of above-described embodiment, above-mentioned gas sampling unit includes feedforward monitoring case 24, as shown in Figure 1, above-mentioned
Feedforward monitoring case 24 is fixed in above-mentioned area to be tested and neighbouring above-mentioned gas sampling equipment 21；As shown in Fig. 2, before above-mentioned
It is dense to present the gas being equipped in monitoring case 24 for the gas temperature sensor 241 of detection gas temperature and for detection gas concentration
Sensor 242 is spent, the probe of above-mentioned gas temperature sensor and the probe of above-mentioned gas concentration sensor are in above-mentioned to be checked
It surveys in region, acquires and monitor the gas temperature in the region and content (such as the temperature and an oxygen of acquisition flue gas in real time
Change nitrogen content).
As the preferred of above-described embodiment, above-mentioned gas concentration sensor is nitric oxide concentration detection sensor, can also
Corresponding gas concentration sensor is selected according to the gas actually sampled；The output end of above-mentioned gas temperature sensor and above-mentioned gas
The output end of concentration sensors passes through cable and connect with the entrance of comprehensive cable connector 243, above-mentioned comprehensive cable connector 243
Outlet connect with external device by comprehensive cable pipe 244.
It is above-mentioned to cut a gas transportation facilities 3 from above-mentioned a plurality of gas sampled delivery pipe as the preferred of above-described embodiment more
It selects a gas transfer pipeline to be connected in road, simultaneously closes off other gas transfer pipelines, that is, need to guarantee only to be connected to one
Gas transfer pipeline.
As the preferred of above-described embodiment, above-mentioned multiple gas sampling cells 2 are set in above-mentioned area to be tested in matrix
It sets, such as the matrix form distribution in Fig. 1-Fig. 3, can also be closed multiple gas sampling cells according to actual measurement region or gas
Removing the work is set.
On the other hand, the utility model embodiment provides a kind of gas detecting system, as shown in figure 3, above-mentioned gas is examined
Examining system includes above-mentioned gas sampler and gas analysis arrangement 5, and that cut a gas defeated is more for above-mentioned gas sampler above-mentioned
The outlet of equipment is sent to be connected to by gas delivery main road with above-mentioned gas analytical equipment.
As the preferred of above-described embodiment, above-mentioned gas analytical equipment is gas analysis instrument, for detection gas temperature,
Gas humidity, gas content, gas pressure and gas flow rate, the gas analysis arrangement can according to actually detected gas and need into
Row is prepared.
The gas sampling device of the utility model may be applicable to the field of detection gas characteristic, and it is de- to be such as installed on SCR
It to the smoke sampling in its flue and is delivered at gas analysis instrument in the flue of nitre device, for accurately detecting SCR cigarette
The various characteristics of flue gas in road, such as the content of carbon monoxide, the temperature etc. of flue gas；Gas sampling device of the invention can also be used for
Other similar occasion detects the characteristic of certain gas, corresponding to prepare in suitable gas analysis arrangement and feed forward detection case
Sensor class, such as humidity sensor or sulfur dioxide concentration detection sensor.
The innovative point of the utility model:
1, the utility model more probe tubes circulation in turn with gas analyzer connection by way of, realize one point
Analyzer detects the composition of multiple position flue gases in flue, makes the representative enhancing of detection, and cost reduces.
2. traditional flue gas cycle sampling device can only realize the function of rotation detection multiple regions flue gas, analysis meter detection
Certain time is needed, flue gas flow field variation is fast.When device is switched to subsequent region detection, the flow field in a upper region has occurred and that change
Change, exhaust gas components also change, and the exhaust gas components for causing this method of sampling to detect are really the cigarette of multiple and different times
Gas, it is not strong to represent meaning, is unfavorable for subsequent denitration process.The present apparatus is cooperated by adding gas storage canister and aspiration pump, is realized
Multiple sampling regions are evacuated simultaneously, and analysis meter is substantially different to the same time in turn to the gas detection in air accumulator
The flue gas inspection in region, solves problem above.
3. traditional flue gas sampling device needs flue gas feeding analysis meter could detect flue-gas temperature, whole process time
Delay is big, and the temperature of flue gas has loss.Present apparatus complex feed-back monitoring case is mounted in flue, directly monitors each region flue gas temperature
Degree and content of nitric oxide, avoid above-mentioned loss, and can compare complex feed-back monitoring case and be drawn into gas delivery main
The data difference of flue gas in road, determines the best opportunity being modified to flue gas content.Traditional flue gas sampling device does not detect one
Content of nitrogen oxide, the present apparatus pass through content of nitric oxide testing result and flue-gas temperature are combined to calculate boiler combustion variation, be conducive to
Subsequent denitration process.
4. being examined by the data that complex feed-back monitoring case detects to gas analysis instrument by the combination of the 2nd, 3 liang of step
It surveys result to be modified, solves conventional apparatus analysis numerical value lag issues.
The above-mentioned gas sampler and gas detecting system of the utility model can enhance gas detection representativeness, improve inspection
Accuracy is surveyed, and reduces entire testing cost, is suitble to industrially promote and apply.
Place, those skilled in the art can not select from the prior art to the greatest extent in the utility model embodiment.
Disclosed above is only specific embodiment of the present utility model, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with above-mentioned power
Subject to the protection scope that benefit requires.
Claims (6)
1. a kind of gas sampling device, which is characterized in that cut gas conveying more including multiple gas sampling cells and one and set
It is standby；The multiple entrances connection corresponding with the outlet of multiple gas sampling cells for cutting a gas transportation facilities to form more
A plurality of gas sampled transfer pipeline, a gas transportation facilities of cutting for controlling a plurality of gas sampled transfer pipeline more
Connection is closed, and the gas sampled in connecting pipeline is delivered to other processes；
Wherein, the gas sampling cell includes for acquiring the gas sampling device of gas to be detected in area to be tested, using
In the air-extractor and gas storage for storing gas sampled that provide pumping power for the gas sampling device；
The entrance of the gas sampling device is in the area to be tested, and the outlet of the gas sampling device is set with the pumping
Standby entrance connection, the outlet of the air-extractor are connected to the entrance of the gas storage, the gas storage
Outlet with it is described more cut the entrances of a gas transportation facilities and be connected to.
2. a kind of gas sampling device as described in claim 1, which is characterized in that the gas sampling device is gas sample
Pipe；The air-extractor is the gas pump of pressure adjustable；The gas storage is gas storage tanks；It is described to cut a gas more
Conveying equipment is to cut flow control valve more.
3. a kind of gas sampling device as described in claim 1, which is characterized in that the gas sampling device is installed on SCR
In the flue of denitrification apparatus, it is sampled and conveys for the flue gas to flue.
4. a kind of gas sampling device as described in claim 1, which is characterized in that the gas sampling device is fixed at institute
It states in area to be tested；The outlet of the gas sampling device and the entrance of the air-extractor are in the outer of the area to be tested
Portion is connected to by pipeline, and the outlet of the air-extractor and the entrance of the gas storage are in the outer of the area to be tested
Portion is connected to by pipeline, and the entrance of a gas transportation facilities is cut described to be checked with described in the outlet of the gas storage more
The outside for surveying region is connected to by pipeline.
5. a kind of gas sampling device as described in claim 1, which is characterized in that described to cut a gas transportation facilities from institute more
Stating in a plurality of gas sampled transfer pipeline selects a gas transfer pipeline to be connected to, and simultaneously closes off other air shooters
Road.
6. a kind of gas sampling device as described in claim 1, which is characterized in that the multiple gas sampling cell is described
It is in arranged in matrix in area to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821571914.3U CN208902486U (en) | 2018-09-26 | 2018-09-26 | A kind of gas sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821571914.3U CN208902486U (en) | 2018-09-26 | 2018-09-26 | A kind of gas sampling device |
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| CN208902486U true CN208902486U (en) | 2019-05-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345527A (en) * | 2020-10-23 | 2021-02-09 | 济宁学院 | Coal pyrolysis waste gas detection equipment and working method |
| CN113960255A (en) * | 2021-10-21 | 2022-01-21 | 江苏嘉臣环境科技有限公司 | Multi-point ambient air monitoring method and system |
| CN115420550A (en) * | 2022-07-25 | 2022-12-02 | 安徽国泰化工有限公司 | Centralized closed sampling analysis equipment for hydrogen peroxide production by anthraquinone process |
-
2018
- 2018-09-26 CN CN201821571914.3U patent/CN208902486U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345527A (en) * | 2020-10-23 | 2021-02-09 | 济宁学院 | Coal pyrolysis waste gas detection equipment and working method |
| CN113960255A (en) * | 2021-10-21 | 2022-01-21 | 江苏嘉臣环境科技有限公司 | Multi-point ambient air monitoring method and system |
| CN115420550A (en) * | 2022-07-25 | 2022-12-02 | 安徽国泰化工有限公司 | Centralized closed sampling analysis equipment for hydrogen peroxide production by anthraquinone process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Feng Yuan Inventor after: Yin Zirui Inventor after: Zeng Xionghui Inventor before: Feng Yuan |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200819 Address after: Unit 822, unit 1, 8 / F, No.8 Chaoyang Road, Chaoyang District, Beijing 100020 Patentee after: Beijing huixinying energy conservation and Environmental Protection Technology Co.,Ltd. Address before: Room A-5559, Building No. 3, 20 Yongan Road, Shilong Economic Development Zone, Mentougou District, Beijing, 100000 Patentee before: HUIXINYING (BEIJING) INTELLIGENT TECHNOLOGY Co.,Ltd. |