CN209570426U - A kind of gas analysis pretreatment unit and gas analysis sample clean system - Google Patents
A kind of gas analysis pretreatment unit and gas analysis sample clean system Download PDFInfo
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- CN209570426U CN209570426U CN201920257545.9U CN201920257545U CN209570426U CN 209570426 U CN209570426 U CN 209570426U CN 201920257545 U CN201920257545 U CN 201920257545U CN 209570426 U CN209570426 U CN 209570426U
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Abstract
A kind of gas analysis pretreatment unit and gas analysis sample clean system, including cooling scrubber, moisture trap, surge tank, cooling separator group, drier group, flowmeter and blowdown portion.Cooling scrubber is connect with moisture trap, and cooling scrubber is equipped with air inlet, and cooling scrubber is carried out external cooling using recirculated water.Moisture trap is connect with surge tank, cooling separator group respectively.Cooling separator group, drier group, flowmeter are sequentially connected, and flowmeter is equipped with gas outlet.Cooling scrubber, surge tank, cooling separator group are connect with blowdown portion.Its cooling scrubber carries out external cooling, to carry secretly using the phenol water washing itself that sample gas contains itself tar dust using recirculated water, and the heat being had with gas itself ensures the temperature of washing water in winter, realizes voltage stabilizing function by the setting of surge tank.
Description
Technical field
The utility model relates to gas sampling fields, in particular to a kind of gas analysis pretreatment unit and coal gas
Analytical sampling purification system.
Background technique
Gas analysis is the analysis side that mixed gas composition is measured using the physics of various gases, chemical property difference
Method.In the industrial production in order to normally keep the safety in production, its composition will be understood by analysis to various industrial gasses.
Current gas analyzer pretreatment system for sample media high temperature, high pressure, oil-containing, it is aqueous, containing dust carry out
Processing, while the specially treateds such as heat tracing, sulphur removal are carried out to sample media, it is point that sample media fully meets process Analyzer
Analysis requires.The purpose of sample pretreatment mainly realizes decompression, cooling, heating, filtering, drying, vaporization etc..It is related to delaying locating in advance
Nafion drier is applied in gas sampling pretreatment by reason system using infiltration embrane method, realizes that the filtering of sample gas, drying remove
The function of water and the cooling of sample gas.
Current gas analysis pretreatment system has that pressure stablizes aspect, and has in terms of cooling is with heat preservation
Improved possibility.In the environment of natural cooling, it may appear that the case where icing.
Utility model content
The purpose of this utility model includes providing a kind of gas analysis pretreatment unit, and cooling scrubber uses recirculated water
Carry out external cooling, to carry secretly using the phenol water washing itself that sample gas contains itself tar dust, the heat being had with gas itself
Amount, ensures the temperature of washing water in winter, realizes voltage stabilizing function by the setting of surge tank.
The another object of the utility model include a kind of gas analysis sample clean system is provided, by sampling probe with
The temperature control of washing water is realized in the mutual cooperation of gas analysis pretreatment unit, realizes voltage stabilizing function.
The embodiments of the present invention are achieved through the following technical solutions:
A kind of gas analysis pretreatment unit, including cooling scrubber, moisture trap, surge tank, cooling separator group,
Drier group, flowmeter and blowdown portion.Cooling scrubber is connect with moisture trap, and cooling scrubber is equipped with air inlet, cooling
Washer is carried out external cooling using recirculated water.Moisture trap is connect with surge tank, cooling separator group respectively.Refrigerated separation
Device group, drier group, flowmeter are sequentially connected, and flowmeter is equipped with gas outlet.Cooling scrubber, surge tank, cooling separator group
It is connect with blowdown portion.
Inventors have found that current gas analysis pretreatment system has that pressure stablizes aspect, and it is cooling with
Heat preservation aspect has improved possibility, in the environment of natural cooling, it may appear that the case where icing.
Inventor has invented a kind of gas analysis pretreatment unit, including cooling scrubber, moisture trap, buffering accordingly
Tank, cooling separator group, drier group, flowmeter and blowdown portion, forming one has the function of filtering, drying.
Cooling scrubber carries out external cooling using recirculated water, is carried secretly using the phenol water washing itself that sample gas contains itself
Tar dust, the heat being had with gas itself ensure the temperature of washing water in winter.Cooling scrubber is with a small amount of circulating water wash
It is also cooling with circulation water leg while washing, it is about 60 degrees Celsius mainly for entrance gas temperature, and contain a large amount of water
It is stablized at 20 degree in conjunction with sample gas own characteristic by washing and cooling means, reaches best wash conditions by vapour.
Sample gas partially enters surge tank from moisture trap, is discharged, is conducive to the stability of whole air pressure.
Sample gas enters moisture trap after cooling scrubber goes out, and extra sample gas enters in surge tank, surge tank into
Row discharge, the stability of system is improved by surge tank, provides voltage stabilizing function.
To sum up, such gas analysis pretreatment unit, cooling scrubber carry out external cooling, utilization using recirculated water
The tar dust of the phenol water washing that sample gas contains itself itself entrainment, the heat being had with gas itself ensure the washing in winter
Coolant-temperature gage realizes voltage stabilizing function by the setting of surge tank.
Further, gas analysis pretreatment unit includes the first automatic drain valve group and third selfdraining valve；
Cooling separator group is connect by the first automatic drain valve group with blowdown portion；
Surge tank is connect by third selfdraining valve with blowdown portion.
Further, cooling separator group includes the first cooling separator and the second cooling separator；
Moisture trap, the first cooling separator, the second cooling separator are sequentially connected；
First automatic drain valve group includes the first selfdraining valve and the second selfdraining valve, and the first cooling separator passes through
First selfdraining valve is connect with blowdown portion, and the second cooling separator is connect by the second selfdraining valve with blowdown portion.
Further, surge tank and third selfdraining valve are connected to the longitudinal middle part of surge tank.
Further, cooling scrubber is also connect with surge tank.
Further, gas analysis pretreatment unit further includes liquid-resisting device, and cooling separator group passes through liquid-resisting device and drying
The connection of device group；
Cooling separator group is connect by liquid-resisting device with blowdown portion.
Further, drier group includes at least two driers, and drier connects with cooling separator group, flowmeter
It connects.
A kind of gas analysis sample clean system, including above-mentioned gas analysis pretreatment unit, sampling probe, blowback dress
It sets and analytical equipment；
Sampling probe, back-blowing device, gas analysis pretreatment unit, analytical equipment are sequentially connected；
Gas analysis pretreatment unit and back-blowing device are connected to air inlet；
Gas analysis pretreatment unit and analytical equipment are connected to gas outlet.
Further, gas analysis sample clean system includes blowback control device, blowback control device and back-blowing device
Connection, blowback control device automatically turn on back-blowing device for start by set date back-blowing device or according to line clogging.
Further, gas analysis sample clean system includes return channel, and sampling probe passes through return channel and back-blowing device
Connection.
The technical solution of the utility model embodiment is at least had the following advantages and beneficial effects:
1, cooling scrubber is carried out external cooling using recirculated water, is carried secretly using the phenol water washing itself that sample gas contains itself
Tar dust, the heat being had with gas itself ensures the temperature of washing water in winter；
2, voltage stabilizing function is realized by the setting of surge tank.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 provides the structural schematic diagram of gas analysis pretreatment unit for the utility model embodiment；
Fig. 2 provides the structural schematic diagram of gas analysis sample clean system for the utility model embodiment.
Icon: 10- gas analysis pretreatment unit, 100- cooling scrubber, 110- air inlet, 200- moisture trap,
300- surge tank, 400- cooling separator group, the first cooling separator of 410-, the second cooling separator of 420-, 500- drier
Group, 600- flowmeter, the gas outlet 610-, 700- blowdown portion, 800- the first automatic drain valve group, the first selfdraining valve of 810-,
The second selfdraining valve of 820-, 830- third selfdraining valve, 900- liquid-resisting device, 20- gas analysis sample clean system, 21-
Sampling probe, 22- back-blowing device, 23- analytical equipment, 24- blowback control device, 25- return channel.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that if occur term " center ", "upper", "lower", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "inner", "outside" is orientation based on the figure or position
Relationship or the utility model product using when the orientation or positional relationship usually put, be merely for convenience of describing this reality
It is described with novel with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third "
It is described etc. being only used for distinguishing, is not understood to indicate or imply relative importance.
In addition, being not offered as requiring component abswolute level or outstanding if there are the terms such as term "horizontal", "vertical", " pendency "
It hangs down, but can be slightly tilted.It is not to indicate to be somebody's turn to do if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
Structure is had to fully horizontally, but can be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, if there is art
Language " setting ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to detachable
Connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, centre can also be passed through
Medium is indirectly connected, and can be the connection inside two elements.It for the ordinary skill in the art, can specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1
Fig. 1 provides the structural schematic diagram of gas analysis pretreatment unit 10 for the utility model embodiment；
The purpose of this utility model is to provide a kind of gas analysis pretreatment units 10, being capable of its cooling scrubber
100 carry out external cooling, to carry secretly using the phenol water washing itself that sample gas contains itself tar dust using recirculated water, use gas
The heat itself having ensures the temperature of washing water in winter, realizes voltage stabilizing function by the setting of surge tank 300.
The embodiments of the present invention are achieved through the following technical solutions:
Please refer to Fig. 1, a kind of gas analysis pretreatment unit 10, including it is cooling scrubber 100, moisture trap 200, slow
Rush tank 300, cooling separator group 400, drier group 500, flowmeter 600 and blowdown portion 700.Cooling scrubber 100 and air water
Separator 200 connects, and cooling scrubber 100 is equipped with air inlet 110, and cooling scrubber 100 is carried out external cooling using recirculated water.
Moisture trap 200 is connect with surge tank 300, cooling separator group 400 respectively.Cooling separator group 400, drier group 500,
Flowmeter 600 is sequentially connected, and flowmeter 600 is equipped with gas outlet 610.Cooling scrubber 100, surge tank 300, cooling separator group
400 connect with blowdown portion 700.
Inventors have found that current gas analysis pretreatment system has that pressure stablizes aspect, and it is cooling with
Heat preservation aspect has improved possibility, in the environment of natural cooling, it may appear that the case where icing.
Inventor has invented a kind of gas analysis pretreatment unit 10, including cooling scrubber 100, moisture trap accordingly
200, surge tank 300, cooling separator group 400, drier group 500, flowmeter 600 and blowdown portion 700, forming one had
Filter, dry function.
Cooling scrubber 100 carries out external cooling, itself to contain using sample gas phenol water washing itself folder using recirculated water
The tar dust of band, the heat being had with gas itself ensure the temperature of washing water in winter.Cooling scrubber 100 is with a small amount of
It is also cooling with circulation water leg while recirculated water washs, it is about 60 degrees Celsius mainly for entrance gas temperature, and contain
It is stablized at 20 degree in conjunction with sample gas own characteristic by washing and cooling means, reaches best washing by a large amount of steam
Condition.
Sample gas enters from the air inlet 110 of cooling scrubber 100, by the circulating water of cooling scrubber 100, utilizes
Heat of sample gas itself improves the temperature of recirculated water, and then temperature control function.Cooling scrubber 100 removes coal dust for wash cooling
Equal particulate matters, and most of water-solubility impurity and greasy dirt play the role of impurity in removal portion's sample gas big absolutely.
Sample gas enters quick separating after moisture trap 200, and approximately half of sample gas and wash water enter surge tank
300, it is drained into outside battery limit (BL) from the mixing of surge tank 300, is discharged, be conducive to the stability of whole air pressure.Moisture trap 200 divides
The top of remaining sample gas from moisture trap 200 from after enters cooling separator group 400 and carries out refrigerated separation.Cooling separator
Group 400 drains into a small amount of misty liquid droplets carried secretly in sample gas outside battery limit (BL), and remaining sample gas enters drier group 500 and behaviour is dried
Make.
After absorption water and greasy dirt by drier group 500, sample gas just can be after flowmeter 600 adjusts flow by flow
The gas outlet 610 of meter 600 is spread out of, and is analyzed into analysis system.Cooling scrubber 100, surge tank 300, cooling separator
Group 400 carries out blowdown operation by blowdown portion 700 respectively, dumps discarded gas-liquid.
To sum up, such gas analysis pretreatment unit 10, cooling scrubber 100 are carried out external cold using recirculated water
But, the tar dust of phenol water washing itself entrainment itself contained using sample gas, the heat being had with gas itself ensure winter
Temperature of washing water, voltage stabilizing function is realized by the setting of surge tank 300.
Further, Fig. 1 is please referred to, gas analysis pretreatment unit 10 includes the first automatic drain valve group 800 and third
Selfdraining valve 830.Cooling separator group 400 is connect by the first automatic drain valve group 800 with blowdown portion 700, surge tank 300
It is connect by third selfdraining valve 830 with blowdown portion 700.
When sample gas passes through cooling separator, the particles such as tar waste liquid of condensation enter selfdraining valve and drain into external water
Envelope.Specifically, cooling separator can choose as turbine condenser.
It is common to realize that pressure is adjusted by the first automatic drain valve group 800, third selfdraining valve 830 and water seal.
Further, Fig. 1 is please referred to, cooling separator group 400 includes the first cooling separator 410 and the second refrigerated separation
Device 420, moisture trap 200, the first cooling separator 410, the second cooling separator 420 are sequentially connected.First automatic drain
Valve group 800 includes the first selfdraining valve 810 and the second selfdraining valve 820, and the first cooling separator 410 is automatic by first
Tapping valve 810 is connect with blowdown portion 700, and the second cooling separator 420 is connected by the second selfdraining valve 820 with blowdown portion 700
It connects.
Cooling separator group 400 includes the first cooling separator 410 and the second cooling separator 420, the first refrigerated separation
Device 410, the second cooling separator 420 are sequentially connected, and form the effect of second level refrigerated separation, the effect of such refrigerated separation is more
It is good, the misty liquid droplets in sample gas compared to single cooling separator, after the first time refrigerated separation that can further go out.
More, cooling separator group 400 can be sequentially connected in series by least three cooling separators, form multistage cooling point
From.
Further, Fig. 1 is please referred to, surge tank 300 and third selfdraining valve 830 are connected to the longitudinal direction of surge tank 300
Middle part.
It is connected to the position of the longitudinal middle part of surge tank 300 by third selfdraining valve 830, can determine surge tank
The amount of the sample gas of direct emission is needed in 300.In the present embodiment, the portion gas in surge tank 300 is entering gas-water separation
In device 200, extra is discharged again, and extra amount is limited by longitudinal middle part.
Further, Fig. 1 is please referred to, cooling scrubber 100 is also connect with surge tank 300.
When sample gas enters cooling scrubber 100 through the air inlet 110 of cooling scrubber 100, the sample gas of part is using cold
But washer 100 enters moisture trap 200, and extra sample gas part enters directly into is discharged in surge tank 300.With this
The demand of control detection sample gas may be implemented.
Further, Fig. 1 is please referred to, gas analysis pretreatment unit 10 further includes liquid-resisting device 900, cooling separator group
400 are connect by liquid-resisting device 900 with drier group 500, and cooling separator group 400 is connected by liquid-resisting device 900 and blowdown portion 700
It connects.
Liquid-resisting device 900 enters liquid for preventing in sample gas transmission process.Cooling separator group 400 passes through liquid-resisting device 900
It is connect with drier group 500, cooling separator group 400 is connect by liquid-resisting device 900 with blowdown portion 700, it can be understood as blocking solution
One end of device 900 is connect with cooling separator group 400, and liquid-resisting device 900 is also connect with drier group 500, blowdown portion 700 respectively.
The sample gas after cooling separator group 400 can be reduced by 900 one side of liquid-resisting device to continue the phenomenon that being dissolved in liquid, guaranteed
The water content of sample gas is lower, on the other hand can reduce the loss of the amount by treated the sample gas of cooling separator group 400, will
It is as much as possible after treated sample gas the is transmitted to drier group 500 of cooling separator group 400 is dry, to be analyzed.
Further, Fig. 1 is please referred to, drier group 500 includes at least two driers, and drier is and cooling separator
Group 400, flowmeter 600 connect.By the way of in parallel, one end is connect with cooling separator group 400 at least two driers,
The other end is connect with flowmeter 600.
Measurement by flowmeter 600 to the flow into the sample gas after drier excessively, limits a certain amount of sample gas from flow
The gas outlet 610 of meter 600 exports, and is analyzed into analysis system.
More, above-mentioned at least two drier is by the way of in parallel, and one end is connect with liquid-resisting device 900, the other end
It is connect with flowmeter 600.
The technical solution of the utility model embodiment is at least had the following advantages and beneficial effects:
1, cooling scrubber 100 carries out external cooling, the phenol water washing itself itself contained using sample gas using recirculated water
The tar dust of entrainment, the heat being had with gas itself ensure the temperature of washing water in winter；
2, voltage stabilizing function is realized by the setting of surge tank 300；
3, cooling separator group 400 includes the first cooling separator 410 and the second cooling separator 420, and it is cold to form second level
But the effect of the effect separated, refrigerated separation is more preferable；
4, it is analyzed by entering analysis system after the adjusting flow of flowmeter 600, controls the flow of the sample gas of detection；
5, using liquid-resisting device 900, guarantee that the water content of the sample gas after cooling separator group 400 is low and the scale of construction as far as possible
It is more.
Embodiment 2
Fig. 2 provides the structural schematic diagram of gas analysis sample clean system 20 for the utility model embodiment.
The present embodiment provides a kind of gas analysis sample clean systems 20, referring to figure 2., including the coal gas in embodiment 1
Analyze pretreatment unit 10, sampling probe 21, back-blowing device 22 and analytical equipment 23.Sampling probe 21, back-blowing device 22, coal gas
Analysis pretreatment unit 10, analytical equipment 23 are sequentially connected.Gas analysis pretreatment unit 10 and back-blowing device 22 be connected into
Port 110, gas analysis pretreatment unit 10 and analytical equipment 23 are connected to gas outlet 610.
Under test gas is sampled by sampling probe 21.Sampling probe 21 can be by sampling probe, root valve, control
Valve and manually sampling needle valve, gas cooler, pressure gauge, condensation reflux device and its internal component composition, using 304 stainless steels
It is made.The sampling probe 21 of selection is poisonous and harmful suitable for petroleum, chemical plant installations, high dustiness, high water capacity, tar content
The on-line continuous of big gaseous sample acquires, especially suitable for the outlet of still that gasifies, transformation, the chemical processes link such as conversion it is online
Analyze gas continuous acquisition.
Back-blowing device 22 is used for the snap action when pipeline loop blocking, and tamper is made to return to process pipe.Back-blowing device
22 are equipped under gas circuit safety unloading valve and blowback water one-way valve safeguards system unusual condition and ensure safety.
After sampling probe 21 is to tested gas sampling, sample gas enters gas analysis from air inlet 110 by back-blowing device 22
Pretreatment unit 10 is then transmit to analytical equipment 23 and carries out gas analysis.Such gas analysis sample clean system 20, energy
Enough control enters the flow of the sample gas of analytical equipment 23, pressure, water content, good to the pretreating effect of sample gas.
Further, referring to figure 2., gas analysis sample clean system 20 includes blowback control device 24, blowback control
Device 24 is connect with back-blowing device 22, and blowback control device 24 is used for start by set date back-blowing device 22 or automatic according to line clogging
Open back-blowing device 22.
Blowback control device 24 is for guaranteeing 21 continuous acquisition coal gas (under test gas) of sampling probe.Blowback control device 24
Using nearest in-wall mounting in back-blowing device 22.
Further, referring to figure 2., gas analysis sample clean system 20 includes return channel 25, and sampling probe 21 passes through
Return channel 25 is connect with back-blowing device 22.
Sample gas is taken out by sampling probe 21 from process pipeline, after return channel 25 controls flow, is quickly passed by pipeline
It transports to gas analysis pretreatment unit 10 and carries out sample gas disposal, purified sample gas is continuously sent to analytical equipment 23.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of gas analysis pretreatment unit, it is characterised in that:
Including cooling scrubber, moisture trap, surge tank, cooling separator group, drier group, flowmeter and blowdown portion；
The cooling scrubber is connect with the moisture trap, and the cooling scrubber is equipped with air inlet, the cooling washing
Device is carried out external cooling using recirculated water；
The moisture trap is connect with the surge tank, the cooling separator group respectively；
The cooling separator group, the drier group, the flowmeter are sequentially connected, and the flowmeter is equipped with gas outlet；
The cooling scrubber, the surge tank, the cooling separator group are connect with the blowdown portion.
2. gas analysis pretreatment unit according to claim 1, it is characterised in that:
The gas analysis pretreatment unit includes the first automatic drain valve group and third selfdraining valve；
The cooling separator group is connect by the first automatic drain valve group with the blowdown portion；
The surge tank is connect by the third selfdraining valve with the blowdown portion.
3. gas analysis pretreatment unit according to claim 2, it is characterised in that:
The cooling separator group includes the first cooling separator and the second cooling separator；
The moisture trap, first cooling separator, second cooling separator are sequentially connected；
The first automatic drain valve group includes the first selfdraining valve and the second selfdraining valve, first cooling separator
It is connect by first selfdraining valve with the blowdown portion, second cooling separator passes through second automatic drain
Valve is connect with the blowdown portion.
4. gas analysis pretreatment unit according to claim 2, it is characterised in that:
The surge tank and the third selfdraining valve are connected to the longitudinal middle part of the surge tank.
5. gas analysis pretreatment unit according to claim 1, it is characterised in that:
The cooling scrubber is also connect with the surge tank.
6. gas analysis pretreatment unit according to claim 1, it is characterised in that:
The gas analysis pretreatment unit further includes liquid-resisting device, and the cooling separator group is done by the liquid-resisting device with described
Dry device group connection；
The cooling separator group is connect by the liquid-resisting device with the blowdown portion.
7. gas analysis pretreatment unit according to claim 1, it is characterised in that:
The drier group include at least two driers, the drier with the cooling separator group, the flowmeter
Connection.
8. a kind of gas analysis sample clean system, it is characterised in that:
The gas analysis sample clean system include gas analysis pretreatment unit of any of claims 1-7,
Sampling probe, back-blowing device and analytical equipment；
The sampling probe, the back-blowing device, the gas analysis pretreatment unit, the analytical equipment are sequentially connected；
The gas analysis pretreatment unit and the back-blowing device are connected to the air inlet；
The gas analysis pretreatment unit and the analytical equipment are connected to the gas outlet.
9. gas analysis sample clean system according to claim 8, it is characterised in that:
The gas analysis sample clean system includes blowback control device, and the blowback control device and the back-blowing device connect
It connects, the blowback control device automatically turns on the blowback dress for back-blowing device described in start by set date or according to line clogging
It sets.
10. gas analysis sample clean system according to claim 8, it is characterised in that:
The gas analysis sample clean system includes return channel, and the sampling probe is filled by the return channel and the blowback
Set connection.
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| CN201920257545.9U CN209570426U (en) | 2019-02-28 | 2019-02-28 | A kind of gas analysis pretreatment unit and gas analysis sample clean system |
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| CN201920257545.9U CN209570426U (en) | 2019-02-28 | 2019-02-28 | A kind of gas analysis pretreatment unit and gas analysis sample clean system |
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