CN206671011U - Gas sample bypasses processing unit - Google Patents
Gas sample bypasses processing unit Download PDFInfo
- Publication number
- CN206671011U CN206671011U CN201720327571.5U CN201720327571U CN206671011U CN 206671011 U CN206671011 U CN 206671011U CN 201720327571 U CN201720327571 U CN 201720327571U CN 206671011 U CN206671011 U CN 206671011U
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- Prior art keywords
- bypass
- switch valve
- gas
- pipeline
- sampling
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Abstract
The utility model provides a kind of gas sample bypass processing unit, including shell and the main sampling pipeline being arranged in shell, the inlet end of the main sampling pipeline is connected with the air inlet pipe being fixed on gas pipeline, outlet side is connected with appendix, first switch valve and second switch valve are sequentially provided with appendix, the bypass flow pipe being connected with appendix and bypass exhaust pipe are provided between first switch valve and second switch valve, bypass exhaust pipe is connected with an air extractor；Also include some bypass sampling lines being in parallel with main sampling pipeline, the bypass sampling line is provided with gas storage chamber, and gas storage chamber both sides are respectively equipped with switch valve；Normally close valve is equipped with the air inlet pipe and escape pipe.Using multiple Parallel testing analysis can be carried out after the utility model single sample to same batch gas sampled, and then more accurate testing result is obtained, and it is simple to operate, sampling is convenient, can also carry out continuous several times sampling.
Description
Technical field
Gas pipeline sampling field is the utility model is related to, particularly a kind of gas sample bypass processing unit.
Background technology
Data are shown according to statistics, and the Eleventh Five-Year Plan period, the rapid growth of discharged nitrous oxides exacerbates the evil of region acid rain
Change trend, the great efforts that partial offset China is paid in terms of sulfur dioxide emission reduction.Because nitrogen oxides is to big compression ring
The adverse effect in border and the severe situation of current thermal power plant's discharged nitrous oxides control, State Ministry of Environmental Protection issue at 2010 beginning of the years
Cloth《Thermal power plant's nitrogen oxides technological policy for treatment》, it is proposed that " 12 during " control discharged nitrous oxides planning and
It is required that.The emphasis of technical policy control is domestic 200MW and above Thermal generation unit, and atmosphere pollution priority control area
All Thermal generation units and cogeneration units in domain.Meanwhile appearance is mandatory《Thermal power plant's air pollution emission mark
It is accurate》Denitration norm controlling will strictly be carried out.
Current domestic power plant mainly uses selective catalytic reduction (SCR) gas denitrifying technology.SCR methods are to use
NH3As reducing agent, by NOxIt is reduced into N2。NH3It is selective, it only and NO react, without with the O in flue gas2Reaction.Conversely,
O2NH can be promoted3With NO reaction.The denitration rate of SCR methods is up to 80%~90%.
During national " 12 ", a mandatory project of the denitrating flue gas project as thermal power plant, and included ring
Protect detection project.Smoke on-line monitoring system CEMS reflects the effect of fume treatment environmental protecting device operation, is environmental administration pair
Discharge the necessary means of enterprise's supervision management.
Domestic denitration CEMS metering systems are mainly at present：The direct method of measurement, extraction method, dilution method.Typically by infrared
Spectroscopic methodology is to NOxDetected.Currently used method is heat tracing extraction method.Its sampler generally directly exports in denitration
Flue perforate, 1-3 representative position is chosen, each independent sampler is installed.
Existing sampler is mostly Simple air-extracting device (syringe-like), can only once be divided for detector after primary sample
Analysis uses, and in order to obtain more definite testing result, generally require to carry out multiple detection to the gas sampled of same batch
Analysis, the detected value of this batch gas is determined by the contrast of repeated detection result, existing sampler can not meet more
Secondary detection demand.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of gas sample bypass processing unit, to same
Batch pipeline gas can carry out multiple Parallel testing analysis after carrying out primary sample, to obtain more accurate testing result.
Technical scheme is used by the utility model solves its technical problem：A kind of gas sample bypasses processing unit,
Including shell and the main sampling pipeline being arranged in shell, the inlet end of the main sampling pipeline is with being fixed on gas pipeline
Air inlet pipe is connected, and outlet side is connected with appendix, and first switch valve and second switch valve are sequentially provided with appendix, and its feature exists
In, the bypass flow pipe being connected with appendix and bypass exhaust pipe are provided between first switch valve and second switch valve,
The bypass flow pipe is provided with the 3rd switch valve, bypasses the outlet side of flow pipe and the outlet being fixed on gas pipeline
Pipe is connected, and bypass exhaust pipe is connected with an air extractor；Also include some bypass probe tubes being in parallel with main sampling pipeline
Road, the bypass sampling line are provided with gas storage chamber, and gas storage chamber both sides are respectively equipped with the 4th switch valve and the 5th switch valve,
One end of this bypass sampling line is connected with main sampling pipeline, defeated between the other end and first switch valve and second switch valve
Tracheae is connected；Normally close valve is equipped with the air inlet pipe and escape pipe.
As further preferred embodiment, the quantity of the bypass sampling line is 6, and in main sampling pipeline week
Enclose rounded array.
As further preferred embodiment, the bypass flow pipe is provided with air pump.
As further preferred embodiment, downward bending is sequentially provided with the gas pipeline on gas circulating direction
The first folded plate and the second folded plate for being folded upward at, the inlet end of the air inlet pipe be in the first folded plate inner side, escape pipe goes out
Gas end is on the inside of the second folded plate.
As further preferred embodiment, the air extractor includes suction bottle and pumping piston, and the pumping is lived
Plug is connected with a piston rod.
As further preferred embodiment, the air extractor is arranged in pumping housing, and the pumping housing is consolidated
It is scheduled on the outer side.
Good effect of the present utility model：It is more using that can be carried out after the utility model single sample to same batch gas sampled
Secondary Parallel testing analysis, and then more accurate testing result is obtained, and it is simple to operate, sampling is convenient, can also carry out continuous more
Sub-sampling.
Brief description of the drawings
Fig. 1 is the structural representation of gas sample bypass processing unit described in the utility model preferred embodiment；
Fig. 2 is the structural representation that sampling line is bypassed described in the utility model preferred embodiment；
Fig. 3 is the structural representation of gas pipeline described in the utility model preferred embodiment.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
Referring to figs. 1 to Fig. 3, the utility model preferred embodiment provides a kind of gas sample bypass processing unit, including outer
Shell 1 and the main sampling pipeline 2 being arranged in shell 1, the inlet end of the main sampling pipeline 2 is with being fixed on gas pipeline 3
Air inlet pipe 4 is connected, and outlet side is connected with appendix 9, and first switch valve 7 and second switch valve 8 are sequentially provided with appendix 9, its
It is characterised by, the bypass flow pipe 10 being connected with appendix 9 and side is provided between first switch valve 7 and second switch valve 8
Road exhaust pipe 16, the bypass flow pipe 10 are provided with the 3rd switch valve 11, bypass the outlet side of flow pipe 10 with consolidating
The escape pipe 5 being scheduled on gas pipeline 3 is connected, and bypass exhaust pipe 16 is connected with an air extractor；Also taken including some with master
The bypass sampling line 12 that sample pipeline 2 is in parallel, the bypass sampling line 12 are provided with gas storage chamber 13,13 liang of gas storage chamber
Side is respectively equipped with the 4th switch valve 14 and the 5th switch valve 15, and one end of this bypass sampling line 12 is connected with main sampling pipeline 2
Logical, the appendix 9 between the other end and first switch valve 7 and second switch valve 8 is connected；In the air inlet pipe 4 and escape pipe 5
It is equipped with normally close valve 6.
Preferably, as shown in Fig. 2 the quantity of the bypass sampling line 12 is 6, and it is in around main sampling pipeline 2
Circular array.
As shown in figure 3, the He of the first folded plate 21 bent downwards is sequentially provided with the gas pipeline 3 on gas circulating direction
The second folded plate 22 being folded upward at, the inlet end of the air inlet pipe 4 is on the inside of the first folded plate 21, at the outlet side of escape pipe 5
In the inner side of the second folded plate 23, during sampling, gas in pipelines is stopped by the first folded plate enters air inlet pipe, simultaneously because air current flow exists
Negative pressure is formed on the inside of second folded plate, realizes that gas flows sampling naturally using pressure difference, naturally it is also possible to directly in bypass runner pipe
Air pump is set on road, gas sample is realized in the presence of air pump.
The air extractor includes suction bottle 17 and pumping piston 18, and the pumping piston 18 is connected with a piston rod 19.
The air extractor is arranged in pumping housing 20, and the pumping housing 20 is fixed on the outside of shell 1.
When being sampled using the utility model, normally close valve 6 is opened, while opens first switch valve, the 3rd switch valve, the 4th open
Valve and the 5th switch valve are closed, second switch valve is closed, realizes that gas flows sampling naturally using the pressure difference of inlet end and outlet side,
Normally close valve 6 is closed after the completion of to be sampled, simultaneously closes off first switch valve, the 3rd switch valve, the 4th switch valve and the 5th switch valve,
Now need test sample gas in main sampling pipeline and six air storing cavity rooms, when treating test sample gas and being tested and analyzed, first open
First switch valve, pull piston to realize pumping, i.e., the sample gas in main sampling pipeline is extracted into suction bottle, is then shut off first and opens
Valve 7 is closed, second switch valve 8 is opened, the sample gas in suction bottle is distributed to detector, realizes and detects for the first time.Six are extracted successively
Sample gas in individual air storage chamber is detected, and can obtain seven sub-sampling results, can be more by the comparative analysis of next sampling result
Accurately determination takes the analysis result of gas.
Above-described is only preferred embodiment of the present utility model, should be understood that the explanation of above example only
It is to be used to help understand method and its core concept of the present utility model, is not used to limit the scope of protection of the utility model,
All any modifications made within thought of the present utility model and principle, equivalent substitution etc., it is new to should be included in this practicality
Within the protection domain of type.
Claims (6)
1. a kind of gas sample bypasses processing unit, including shell and the main sampling pipeline that is arranged in shell, the main sampling
The inlet end of pipeline is connected with the air inlet pipe being fixed on gas pipeline, and outlet side is connected with appendix, is set successively on appendix
There are first switch valve and second switch valve, it is characterised in that：It is provided with and appendix phase between first switch valve and second switch valve
The bypass flow pipe and bypass exhaust pipe of connection, the bypass flow pipe are provided with the 3rd switch valve, bypass runner pipe
The outlet side on road is connected with the escape pipe being fixed on gas pipeline, and bypass exhaust pipe is connected with an air extractor；Also include
Some bypass sampling lines being in parallel with main sampling pipeline, the bypass sampling line are provided with gas storage chamber, gas storage chamber
Both sides are respectively equipped with the 4th switch valve and the 5th switch valve, and one end of this bypass sampling line is connected with main sampling pipeline, separately
Appendix between one end and first switch valve and second switch valve is connected；It is equipped with the air inlet pipe and escape pipe normally closed
Valve.
A kind of 2. gas sample bypass processing unit according to claim 1, it is characterised in that：The bypass sampling line
Quantity be 6, and the rounded array around main sampling pipeline.
A kind of 3. gas sample bypass processing unit according to claim 1 or 2, it is characterised in that：The bypass circulation
Pipeline is provided with air pump.
A kind of 4. gas sample bypass processing unit according to claim 1 or 2, it is characterised in that：The gas pipeline
The first folded plate bent downwards and the second folded plate being folded upward at are sequentially provided with interior gas circulating direction, the air inlet pipe is entered
Gas end is on the inside of the first folded plate, and the outlet side of escape pipe is on the inside of the second folded plate.
A kind of 5. gas sample bypass processing unit according to claim 1 or 2, it is characterised in that：The air extractor
Including suction bottle and pumping piston, the pumping piston is connected with a piston rod.
A kind of 6. gas sample bypass processing unit according to claim 5, it is characterised in that：The air extractor is set
In pumping housing, the pumping housing is fixed on the outer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720327571.5U CN206671011U (en) | 2017-03-31 | 2017-03-31 | Gas sample bypasses processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720327571.5U CN206671011U (en) | 2017-03-31 | 2017-03-31 | Gas sample bypasses processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206671011U true CN206671011U (en) | 2017-11-24 |
Family
ID=60366485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720327571.5U Expired - Fee Related CN206671011U (en) | 2017-03-31 | 2017-03-31 | Gas sample bypasses processing unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206671011U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596311A (en) * | 2019-08-05 | 2019-12-20 | 苏州迈优医疗科技有限公司 | Novel multichannel exhaled gas analyzer and operation method |
-
2017
- 2017-03-31 CN CN201720327571.5U patent/CN206671011U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596311A (en) * | 2019-08-05 | 2019-12-20 | 苏州迈优医疗科技有限公司 | Novel multichannel exhaled gas analyzer and operation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20200331 |