CN205861148U - Desulfurization CEMS flow purging system - Google Patents
Desulfurization CEMS flow purging system Download PDFInfo
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- CN205861148U CN205861148U CN201620537011.8U CN201620537011U CN205861148U CN 205861148 U CN205861148 U CN 205861148U CN 201620537011 U CN201620537011 U CN 201620537011U CN 205861148 U CN205861148 U CN 205861148U
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- solenoid valve
- pair
- pressure transmitter
- differential pressure
- pitot tube
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Abstract
This utility model provides a kind of desulfurization CEMS flow purging system, it is installed on a desulfurization CEMS, this desulfurization CEMS has a pitot tube, is communicated in a differential pressure transmitter of this pitot tube, a scavenging pipeline in parallel with this differential pressure transmitter, including: it is arranged at a pair normally open solenoid valve of the linkage at described differential pressure transmitter two ends；It is arranged at a pair normally closed solenoid valve of the linkage at described scavenging pipeline two ends；The control device being simultaneously connected with the pair of normally open solenoid valve and a pair normally closed solenoid valve signal, including a transmitter unit, in order to transmit a purging signal；The pair of normally open solenoid valve cuts out when receiving described purging signal, and the pair of normally closed solenoid valve is opened when receiving described purging signal.It can be avoided that differential pressure transmitter causes in purge damage, and can obtain based on existing conventional desulfurization CEMS flow blow device carries out transformation, and improvement cost is low, the duration is short, is suitable to popularization and application on a large scale.
Description
Technical field
This utility model relates to fume treatment technical field, particularly relates to desulfurization CEMS, is specifically related to a kind of desulfurization CEMS
Flow purging system.
Background technology
CEMS is the abbreviation of English Continuous Emission Monitoring System, refers to atmospheric pollution
The gaseous contaminant of source emission and particulate matter carry out concentration and total emission volumn is monitored continuously and information is real-time transmitted to supervisor portion
The device of door, is referred to as " flue gas automatic monitored control system ", also known as " flue gas discharge continuous monitoring system " or " flue gas on-line monitoring system
System ".
Differential pressure transmitter is the transmitter of the difference of measuring transducer pressure at two ends, and outputting standard signal is (such as 4-20mA, 0-
5V).They all have 2 pressure interfaces to differential pressure transmitter unlike general pressure transmitter, and differential pressure transmitter typically divides
For positive pressure side and negative pressure end, generally, the pressure of the positive pressure side of differential pressure transmitter should be greater than negative pressure section pressure and could measure.
Desulfurization CEMS flow blow device, mainly measures pipeline to the flue gas flow in CEMS and clears up, prevent because of
Longtime running dust stratification and result in blockage.Blowing medium generally cleaning, clean compressed air, pressure about 0.4MPa.Purging
Pipeline need to access flue gas flow and measure pipeline, can realize purging, owing to flow measurement uses pitot tube differential pressure method to measure,
Flue differential pressure is the least by only tens, hundreds of handkerchief, differential pressure transmitter can only be used to measure, and flue gas flow measurement pipeline is past
Toward connection differential pressure transmitter.
The compressed air pressure being purged with typically (necessarily hinders if being just pressed with less than this pressure flue at about 0.4MPA
Power, it is impossible to reach to purge effect), if the pressure-containing parts that this pressure enters differential pressure transmitter easily causes permanent deformation,
Damage table meter.Therefore, in purge, differential pressure transmitter is very easy to damage occur.
In view of this, it is badly in need of existing desulfurization CEMS flow purging system is improved, it is to avoid owing to purging causes
The damage of differential pressure transmitter.
Utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of desulfurization CEMS flow purging system, it is possible to avoid
Differential pressure transmitter is caused damage by purge, and can enter based on to existing conventional desulfurization CEMS flow blow device
Row transformation obtains, and improvement cost is low, and the duration is short, is suitable to popularization and application on a large scale.
For reaching above-mentioned purpose, the concrete technical scheme that this utility model is taked is:
A kind of desulfurization CEMS flow purging system, is installed on a desulfurization CEMS, this desulfurization CEMS and has a pitot tube, connection
In a differential pressure transmitter of this pitot tube, a scavenging pipeline in parallel with this differential pressure transmitter, including:
It is arranged at a pair normally open solenoid valve of the linkage at described differential pressure transmitter two ends；
It is arranged at a pair normally closed solenoid valve of the linkage at described scavenging pipeline two ends；
The control device being simultaneously connected with the pair of normally open solenoid valve and a pair normally closed solenoid valve signal, transmits including one
Unit, in order to transmit a purging signal；
The pair of normally open solenoid valve cuts out when receiving described purging signal, blows described in the reception of the pair of normally closed solenoid valve
Open when sweeping signal.
Further, described pitot tube is S-shaped pitot tube.
Further, described S-shaped pitot tube is also associated with a pressure transmitter.
Further, described scavenging pipeline connects a compressed air feedway.
Further, described differential pressure transmitter is connected with pitot tube by two sampling lines.
Further, described scavenging pipeline is connected with pitot tube by a pair isometric transfer pipeline.
Further, the material of described sampling line and described transfer pipeline is selected from stainless steel tube or glass reinforced plastic pipe.
By taking technique scheme, differential pressure transmitter can be effectively protected, decrease table meter replacing amount, significantly subtract
The few work of maintainer, maintenance.Obtain further, it is possible to carry out transformation at the desulfurization CEMS flow blow device of existing routine
, and improvement cost is low, the duration is short, is suitable to popularization and application on a large scale.
Accompanying drawing explanation
Fig. 1 is the structural representation of the desulfurization CEMS flow purging system in this utility model one embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.Coordinate institute's accompanying drawing that the features and advantages of the present invention are elaborated below.
An embodiment as shown in Figure 1, it is provided that a kind of desulfurization CEMS flow purging system, is installed on a desulfurization CEMS, should
Desulfurization CEMS has pitot tube 1, high-pressure side and low-pressure end and is communicated in two high voltage interfaces and the differential pressure of low-voltage interface of pitot tube 1
Transmitter 2, the scavenging pipeline 3 in parallel with differential pressure transmitter 2, including:
It is arranged at a pair normally open solenoid valve 6 of the linkage at differential pressure transmitter 2 two ends；It is arranged at the connection at scavenging pipeline 3 two ends
Dynamic a pair normally closed solenoid valve 7；The control device being simultaneously connected with a pair normally open solenoid valve 6 and a pair normally closed solenoid valve 7 signal
(not shown), including a transmitter unit, in order to transmit a purging signal；
A pair normally open solenoid valve cuts out when connecing 6 receipts purging signal, and a pair normally closed solenoid valve 7 is opened when receiving purging signal.
So, when purging, it is possible to prevent because compressed air that pressure is higher acts on the barrier film of differential pressure transmitter
On, cause the damage of transmitter.For purging the use normally closed solenoid valve of isolation, for the normally opened electromagnetism of use of the isolation of sampling
Valve, to prevent the long-term charged damage coil of electromagnetic valve, causes losing efficacy.
Specifically, in above-described embodiment, pitot tube is S-shaped pitot tube.S-shaped pitot tube is also associated with pressure transmitter 8.
Scavenging pipeline 3 connects a compressed air feedway, in order to provide blowing medium, i.e. compressed air.
Differential pressure transmitter 2 is connected with pitot tube 1 by two sampling lines 4.Scavenging pipeline 3 is by a pair isometric conveying
Pipeline 5 connects with pitot tube 1.The material of sampling line 4 and transfer pipeline 5 is selected from stainless steel tube or glass reinforced plastic pipe.A pair conveying
Pipeline is isometric, and the shortest, to build the pressure in pipeline after preventing electromagnetic valve action or to have the long-term pressurized in side.Stainless steel tube or glass
Glass steel pipe then has anticorrosion, anti-wear, the advantage of anti-gas-leak.
Desulfurization CEMS flow purging system described in above-described embodiment can be by existing conventional desulfurization CEMS flow
Blow device obtains, and transformation process is as follows:
The material preparing to need mainly has 220V normally closed solenoid valve 2,220V normally open solenoid valve 2, stainless steel tube or glass
Glass steel pipe is some, and caliber is generally 6-12 centimetre, chooses according to pipeline specifications actual in desulfurization CEMS.
Each electromagnetic valve and pipeline is connected according to the structure shown in Fig. 1.
Then make two normally closed solenoid valves use same road signal to control, when being used for purging, open (purging signal, electricity
Magnet valve is charged to be opened, dead electricity Guan Bi during purging blackout)；Normally open solenoid valve uses same road signal to control, for normally taking
Sample, the charged Guan Bi when purging signal and coming.
Arranging purge time is: purging 20S stops 5S, continuously purging 10 times.
As above-mentioned, solve differential pressure transmitter bellows in existing conventional desulfurization CEMS flow blow device by transformation and be subject to
The problem that crushing is bad, decreases the damage of transmitter, changes quantity, thus greatly reduce operating cost.
Claims (7)
1. a desulfurization CEMS flow purging system, is installed on a desulfurization CEMS, this desulfurization CEMS and has a pitot tube, is communicated in
One differential pressure transmitter of this pitot tube, a scavenging pipeline in parallel with this differential pressure transmitter, it is characterised in that including:
It is arranged at a pair normally open solenoid valve of the linkage at described differential pressure transmitter two ends；
It is arranged at a pair normally closed solenoid valve of the linkage at described scavenging pipeline two ends；
One is simultaneously connected with the pair of normally open solenoid valve and a pair normally closed solenoid valve signal controls device, transmits list including one
Unit, in order to transmit a purging signal；
The pair of normally open solenoid valve cuts out when receiving described purging signal, and the pair of normally closed solenoid valve receives described purging letter
Number time open.
2. desulfurization CEMS flow purging system as claimed in claim 1, it is characterised in that described pitot tube is S-shaped pitot tube.
3. desulfurization CEMS flow purging system as claimed in claim 2, it is characterised in that described S-shaped pitot tube is also associated with
One pressure transmitter.
4. desulfurization CEMS flow purging system as claimed in claim 1, it is characterised in that described scavenging pipeline connects a compression
Air feeder.
5. desulfurization CEMS flow purging system as claimed in claim 1, it is characterised in that described differential pressure transmitter passes through two
Sampling line connects with pitot tube.
6. desulfurization CEMS flow purging system as claimed in claim 5, it is characterised in that described scavenging pipeline is by an equity
Long transfer pipeline connects with pitot tube.
7. desulfurization CEMS flow purging system as claimed in claim 6, it is characterised in that described sampling line and described conveying
The material of pipeline is selected from stainless steel tube or glass reinforced plastic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537011.8U CN205861148U (en) | 2016-06-03 | 2016-06-03 | Desulfurization CEMS flow purging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537011.8U CN205861148U (en) | 2016-06-03 | 2016-06-03 | Desulfurization CEMS flow purging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205861148U true CN205861148U (en) | 2017-01-04 |
Family
ID=57639290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620537011.8U Active CN205861148U (en) | 2016-06-03 | 2016-06-03 | Desulfurization CEMS flow purging system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205861148U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108001A (en) * | 2017-06-26 | 2019-01-01 | 大唐环境产业集团股份有限公司 | A kind of desulfurizer mist eliminator differential pressure measurement pipeline automatic blowout device and blowing method |
-
2016
- 2016-06-03 CN CN201620537011.8U patent/CN205861148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108001A (en) * | 2017-06-26 | 2019-01-01 | 大唐环境产业集团股份有限公司 | A kind of desulfurizer mist eliminator differential pressure measurement pipeline automatic blowout device and blowing method |
| CN109108001B (en) * | 2017-06-26 | 2023-10-13 | 大唐环境产业集团股份有限公司 | Automatic purging device and purging method for differential pressure measurement pipeline of demister of desulfurizing tower |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |