CN105043013B - The uninterrupted back-up system of air separation plant - Google Patents
The uninterrupted back-up system of air separation plant Download PDFInfo
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- CN105043013B CN105043013B CN201510546913.8A CN201510546913A CN105043013B CN 105043013 B CN105043013 B CN 105043013B CN 201510546913 A CN201510546913 A CN 201510546913A CN 105043013 B CN105043013 B CN 105043013B
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- Prior art keywords
- direct
- regulating valve
- air separation
- pipeline
- operated regulator
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- 238000000926 separation method Methods 0.000 title claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 32
- 238000002309 gasification Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 description 27
- 230000008439 repair process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Abstract
The invention discloses the uninterrupted back-up systems of air separation plant, including direct-operated regulator, pressure regulation device, pressure transmitter, electrical regulating valve, control system, the gas incoming end after gasification and the gas output end after pressure regulation, gas incoming end is connected to gas output end with pipeline through direct-operated regulator all the way, gas incoming end another way is connected to through electrical regulating valve on the pipeline between direct-operated regulator and pressure transmitter with pipeline, and pressure regulation device is connected to direct-operated regulator；Control system is electrically connected electrical regulating valve and pressure transmitter.The present invention can be supplied to user incessantly, ensure the security and stability operation of back-up system.
Description
Technical field
The present invention relates to air separation plant more particularly to the uninterrupted back-up systems of air separation plant.
Background technology
Air separation plant is the abbreviation of air separation equipment, also referred to as space division, is by air liquefaction, rectifying, final separation
As the gas separation equipment of oxygen, nitrogen and other valuable gases.Since some industries mating with air separation plant supply gas
Continuity require it is relatively high, once disastershutdown occurs in air separation plant, mating equipment can be had a huge impact, even
Cause prodigious economic loss.But current air separation plant is the system of a set of complexity, is easy because a small failure is made
Forming apparatus is shut down, so, reliability, the stability of the back-up system of current air separation plant are insufficient, it is difficult to go out in air separation plant
When existing problem is shut down, back-up system is allowed to be supplied incessantly to user.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide the uninterrupted back-up system of air separation plant, energy
It is supplied incessantly to user, ensures the security and stability operation of back-up system.
The purpose of the present invention is realized using following technical scheme：
The uninterrupted back-up system of air separation plant, including it is direct-operated regulator, pressure regulation device, pressure transmitter, electrical
Regulating valve, control system, the gas incoming end after gasification and the gas output end after pressure regulation, gas incoming end is all the way with pipeline
It is connected to gas output end through direct-operated regulator, gas incoming end another way is connected to self-operated type with pipeline through electrical regulating valve
On pipeline between regulating valve and pressure transmitter, pressure regulation device is connected to direct-operated regulator；Control system is electric respectively
Connect electrical regulating valve and pressure transmitter.
Preferably, it is connected separately with the first shut-off valve on the arrival end of direct-operated regulator and the pipeline of outlet end.
Preferably, it is connected separately with the second shut-off valve on the arrival end of electrical regulating valve and the pipeline of outlet end.
Preferably, there is electrical regulating valve blind controller system, one tracheae of outlet end of direct-operated regulator to connect instrument
Table control system.
Preferably, control system is PLC system or DCS system.
Compared with prior art, the beneficial effects of the present invention are：
The present invention can devote oneself to work after air separation plant is shut down or is had a power failure, and liquid after gasifier gasification through gas by accessing
End enters the two-way voltage-regulating system of the present invention, and Self-driven pressure-adjusting valve and electrical regulating valve are opened at this time, and gas passes through two pressure regulation
User is given after valve decompression, the back-up system of double insurance is formed, ensure that the safe and reliable continuous operation of back-up system；And from
Power formula regulating valve is adjusted according to the pressure of setting from motion tracking, can when direct-operated regulator or the failure of electrical regulating valve
Front and back the first shut-off valve or the second shut-off valve are corresponded to close it, is maintained, makes whole system can online more
It changes and repairs, avoiding the back-up system caused by single failure can not work.
Description of the drawings
Fig. 1 is the connection diagram of the uninterrupted back-up system of air separation plant of the present invention.
In figure：1, direct-operated regulator；2, pressure regulation device；3, pressure transmitter；4, electrical regulating valve；41, instrument
Control system；5, control system；6, gas incoming end；7, gas output end；8, tracheae；9, the first shut-off valve；10, the second cut-off
Valve.
Specific implementation mode
In the following, in conjunction with attached drawing and specific implementation mode, the present invention is described further：
Such as the uninterrupted back-up system of air separation plant that Fig. 1 shows, including direct-operated regulator 1, pressure regulation device 2, pressure
Transmitter 3, electrical regulating valve 4, control system 5, the gas incoming end 6 after gasification and the gas output end 7 after pressure regulation, gas
6 one tunnel of incoming end is connected to gas output end 7 with pipeline through direct-operated regulator 1, and 6 another way of gas incoming end is with pipeline through electricity
Gas regulating valve 4 is connected on the pipeline between direct-operated regulator 1 and pressure transmitter 3, and pressure regulation device 2, which is connected to, relies on oneself
Formula regulating valve 1；Control system 5 is electrically connected electrical regulating valve 4 and pressure transmitter 3.
It devotes oneself to work after air separation plant is shut down or is had a power failure, the liquid of wet tank after gasifier gasification through gas by connecing
Enter the two-way voltage-regulating system that end 6 enters the present invention, Self-driven pressure-adjusting valve and electrical regulating valve 4 are opened at this time, and gas passes through two
After pressure regulator valve decompression, preferably through pressure transmitter 3, then by gas output end 7 user is given, form the standby system of double insurance
System, ensure that the safe and reliable continuous operation of back-up system.
Wherein, control system 5 is PLC system or DCS system.Specifically control mode is：When space division system once shut down or
Have a power failure, this back-up system is started to work, this back-up system is that two-way is adjusted：It is the electrical regulating valve 4 for having electric signal to control all the way,
The control of electrical regulating valve 4 is controlled according to the pressure after valve by DCS/PLC systems, and control principle is using conventional PID controls
Principle processed.Another way is commander's type direct-operated regulator 1 of gas signal control, which is not necessarily to external control instrument, profit
It is adjusted with itself pipeline pressure.That is, this back-up system normal work is to carry out PID by the electrical regulating valve 4 that electric signal controls
Adjusting control, when system blackout, stop the supple of gas or steam when, the regulating loop where electrical regulating valve 4 is ineffective, at this moment another routing command
Type direct-operated regulator 1 carry out it is continual give user gas supply, ensure back-up system security and stability operation.
As preferred embodiment, the electrical regulating valve 4 of this example has blind controller system 41, direct-operated regulator 1
Outlet end one tracheae 8 connect blind controller system 41 so that the control air source of instrument 41 is after wet tank gasifies
Gas ensure that in equipment downtime as 41 air source of blind controller system, still have the supply of 41 gas of blind controller system, keep away
Exempt from space division shutdown and caused 41 gas cut-off of instrument, influences the adjusting of electrical regulating valve 4.
For convenience of online replacement and repair, divide on the arrival end of direct-operated regulator 1 and the pipeline of outlet end of this example
It is not connected with the first shut-off valve 9.It is connected separately with the second shut-off valve on the arrival end of electrical regulating valve 4 and the pipeline of outlet end
10.When direct-operated regulator 1 or electrical 4 any failure of regulating valve, it can be closed and correspond to the first front and back shut-off valve 9
Or second shut-off valve 10, it is maintained, makes whole system that can replace and repair online, avoid because single failure is made
It can not work at back-up system.
It will be apparent to those skilled in the art that technical solution that can be as described above and design, make various other
Corresponding change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (5)
1. the uninterrupted back-up system of air separation plant, which is characterized in that become including direct-operated regulator, pressure regulation device, pressure
Send device, electrical regulating valve, control system, the gas incoming end after gasification and the gas output end after pressure regulation, gas incoming end
Gas output end is connected to through direct-operated regulator with pipeline all the way, gas incoming end another way is connected with pipeline through electrical regulating valve
It is connected on the pipeline between direct-operated regulator and pressure transmitter, pressure regulation device is connected to direct-operated regulator；Control
System is electrically connected electrical regulating valve and pressure transmitter.
2. the uninterrupted back-up system of air separation plant according to claim 1, which is characterized in that the entrance of direct-operated regulator
It is connected separately with the first shut-off valve on the pipeline of end and outlet end.
3. the uninterrupted back-up system of air separation plant according to claim 2, which is characterized in that the arrival end of electrical regulating valve
With the second shut-off valve is connected separately on the pipeline of outlet end.
4. the uninterrupted back-up system of air separation plant according to claim 1, which is characterized in that electrical regulating valve has instrument
One tracheae of outlet end of control system, direct-operated regulator connects blind controller system.
5. according to the uninterrupted back-up system of Claims 1 to 4 any one of them air separation plant, which is characterized in that control system
For PLC system or DCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546913.8A CN105043013B (en) | 2015-08-31 | 2015-08-31 | The uninterrupted back-up system of air separation plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510546913.8A CN105043013B (en) | 2015-08-31 | 2015-08-31 | The uninterrupted back-up system of air separation plant |
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| Publication Number | Publication Date |
|---|---|
| CN105043013A CN105043013A (en) | 2015-11-11 |
| CN105043013B true CN105043013B (en) | 2018-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510546913.8A Active CN105043013B (en) | 2015-08-31 | 2015-08-31 | The uninterrupted back-up system of air separation plant |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989274B (en) * | 2017-03-17 | 2023-03-31 | 湘西族兴科技有限公司 | Automatic air supply system of air pressure balancing tank |
| US20200333070A1 (en) * | 2017-12-26 | 2020-10-22 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | System and method for supplying backup production in air separation device |
| CN108954001A (en) * | 2018-07-24 | 2018-12-07 | 杭州杭氧股份有限公司 | A kind of zero gap air supply system of space division cluster to downstream process system |
| CN113898426A (en) * | 2021-09-28 | 2022-01-07 | 广东韶钢松山股份有限公司 | Hydrophobic flash tank |
Citations (4)
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|---|---|---|---|---|
| JP2006275436A (en) * | 2005-03-30 | 2006-10-12 | Taiyo Nippon Sanso Corp | Seal gas or instrumentation air supply method and its device |
| CN203052202U (en) * | 2013-01-30 | 2013-07-10 | 廊坊黎明气体有限公司 | Continuous nitrogen supply device |
| CN203836598U (en) * | 2014-05-09 | 2014-09-17 | 沈阳洪生气体有限公司 | Safety hydrogen supply device |
| CN203857270U (en) * | 2014-03-25 | 2014-10-01 | 重庆国际复合材料有限公司 | Oxygen supply device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4886386B2 (en) * | 2006-06-28 | 2012-02-29 | 大陽日酸株式会社 | High pressure gas supply method |
| CN204569401U (en) * | 2015-04-28 | 2015-08-19 | 正星科技有限公司 | A kind of train charging machine |
-
2015
- 2015-08-31 CN CN201510546913.8A patent/CN105043013B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006275436A (en) * | 2005-03-30 | 2006-10-12 | Taiyo Nippon Sanso Corp | Seal gas or instrumentation air supply method and its device |
| CN203052202U (en) * | 2013-01-30 | 2013-07-10 | 廊坊黎明气体有限公司 | Continuous nitrogen supply device |
| CN203857270U (en) * | 2014-03-25 | 2014-10-01 | 重庆国际复合材料有限公司 | Oxygen supply device |
| CN203836598U (en) * | 2014-05-09 | 2014-09-17 | 沈阳洪生气体有限公司 | Safety hydrogen supply device |
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| CN105043013A (en) | 2015-11-11 |
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Address after: 518000 Shenzhen center business building, Futian central street, Futian, Shenzhen, Guangdong 2114-2115, China, Futian District Applicant after: SHENZHEN THRESHOLD INDUSTRIAL TECHNOLOGY CO.,LTD. Address before: 518000 Guangdong city of Shenzhen province Futian District Tairan Industrial Zone Tairan cedar building B, 12B industry Applicant before: SHENZHEN HAIGE JINGU CHEMICAL TECHNOLOGY CO.,LTD. |
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Address after: No. 27-28, 7th floor, building 12, Shenzhen Bay science and technology ecological park, No. 18, South Keji Road, high tech community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Haige Jingu Industrial Technology Co.,Ltd. Address before: 518000 Guangdong Shenzhen, Shenzhen Futian District Futian Street Central Business Center building 2114-2115 Patentee before: SHENZHEN THRESHOLD INDUSTRIAL TECHNOLOGY CO.,LTD. |
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