CN202580246U - Device for solving faults of valves in air separation system - Google Patents

Device for solving faults of valves in air separation system Download PDF

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Publication number
CN202580246U
CN202580246U CN 201220132942 CN201220132942U CN202580246U CN 202580246 U CN202580246 U CN 202580246U CN 201220132942 CN201220132942 CN 201220132942 CN 201220132942 U CN201220132942 U CN 201220132942U CN 202580246 U CN202580246 U CN 202580246U
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CN
China
Prior art keywords
valve
gas
cylinder
valves
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN 201220132942
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Chinese (zh)
Inventor
蒋小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co Ltd
Original Assignee
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magang Group Holding Co Ltd, Maanshan Iron and Steel Co Ltd filed Critical Magang Group Holding Co Ltd
Priority to CN 201220132942 priority Critical patent/CN202580246U/en
Application granted granted Critical
Publication of CN202580246U publication Critical patent/CN202580246U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a device for solving faults of valves in an air separation system. The device comprises a first stop valve (1), a first pressure reduction valve (2), a first pressure meter (3) and a valve cylinder (4) in sequential series. An instrument pipeline is further serially connected between the first pressure meter (3) and the valve cylinder (4) through a tee joint and comprises a second stop valve (5), a second pressure meter (6), a second pressure reduction valve (7), a third pressure meter (8) and an external air source (9) in sequential series, and the external air source (9) is positioned at the tail end of the pipeline. By means of addition of air supply, one faulted valve can operate normally without affecting normality in operation of other valves when a large-sized valve is insensitive in action or blocked, so that influences of shutdown of an oxygenator caused by valve faults can be eliminated.

Description

A kind of device that is used for solving the space division system failsafe valve
Technical field
The utility model relates to a kind of space division system, especially relates to a kind of device when solving in the space division system big valve or not having manually operated valve to break down.
Background technique
" air separation facility or space division system " is meant that cryogenic rectification method extracts the device systems of gases such as oxygen, nitrogen, argon gas, also is the oxygenerator system.Used a large amount of pneumatic valves in the space division system, for diameter wherein at 800cm or the big-and-middle valve more than the 800cm, because this type of diameter valve size is bigger; Precision is high, complex process, but and not have a handwheel of outfit manual tune; Therefore often bring difficulty in case break down to repair and maintenance; Be difficult in a short time eliminate, and along with the increase of duration of service, the progressively trend of deterioration also appears in pneumatic valve.This type of valve in case occur the insensitive or cylinder component of action along with long operational time deterioration, jam and the phenomenon of being failure to actuate will appear, have a strong impact on device and normally move, even cause producing compelled the stoppage in transit.With regard to existing empty branch technology, all the valve instrument gas in the air separation facility are total source of the gas supply modes, and the design supply pressure that is adopted is the average working pressure value (400Kpa) to up to a hundred valves.Instrument air pressure if be directed against a fault valve with whole device valve improves, and then can directly produce infringement to other modulating valve film head, influence its service behaviour.Therefore, when slow motion or jam appear in the air separation facility regulating valve, eliminate potential faults, can only could thoroughly solve through changing whole valve.And up to a hundred valves are arranged in the system, and because such spare part expense is high, ordering cycle is long, can not be in a short time or whole orders, and also production period, do not possess the replacing condition yet, therefore, this kind problem can not effectively be solved always.
The model utility content
The utility model technical problem to be solved is to the problem that exists in the existing technology a kind of device that is used for solving the space division system failsafe valve to be provided; Its objective is inflation pressure through independent lifting defective valves door cylinder; Make under the situation that does not influence other normal valve working characteristic; Both guaranteed the normal regulating effect of fault valve, guaranteed the continuity of the normal operation of space division system again, and can also and decide spare part and win the plenty of time for maintenance.
The technological scheme of the utility model is the device that this kind is used for solving the space division system failsafe valve; First stop valve, first reduction valve, first pressure gauge and the valve cylinder that comprise series connection successively; Between described first pressure gauge and valve cylinder, also be serially connected with one road gauge pipe through threeway; One road gauge pipe of described serial connection comprises second stop valve, second pressure gauge, second reduction valve, the 3rd pressure gauge and the external source of the gas of series connection successively; Described second stop valve is connected with valve cylinder with first pressure gauge through threeway, and external source of the gas is positioned at the end of pipeline.
Described external source of the gas is a gas cylinder, and nitrogen is housed in the gas cylinder.
The device that this kind with said structure is used for solving the space division system failsafe valve has the following advantages:
1. the mode supplied with through newly-increased source of the gas of this kind device, when large-scale valve event during insensitive or jam when not influencing other valve proper functioning, make that the fault valve is active to be done normally, eliminated because of failsafe valve and caused the influence that oxygenerator is shut down.
2. this kind device mode is novel, and the design pipeline is compact, reasonable, and investment cost is low, and operating cost is extremely low; Easy to operate, operation has reduced the oxygenerator downtime rate accurately and reliably; Reduced operating cost, won great amount of time, also therefore created huge economic benefit for company produces.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is the structural representation of the utility model.
In Fig. 1,1: the first stop valve; 2: the first reduction valve; 3: the first pressure gauges; 4: valve cylinder; 5: the second stop valves; 6: the second pressure gauges; 7: the second reduction valve; 8: the three pressure gauges; 9: external source of the gas.
Embodiment
Can know by structure shown in Figure 1; The device that this kind is used for solving the space division system failsafe valve comprises first stop valve 1, first reduction valve 2, first pressure gauge 3 and the valve cylinder 4 of series connection successively; Between first pressure gauge 3 and valve cylinder 4, also be serially connected with one road gauge pipe through threeway; One road gauge pipe of serial connection comprises that successively second stop valve 5, second pressure gauge 6, second reduction valve 7, the 3rd pressure gauge 8 and external source of the gas 9, the second stop valves 5 of series connection are connected with valve cylinder 4 with first pressure gauge 3 through threeway, and external source of the gas 9 is positioned at the end of pipeline; External source of the gas 9 is a gas cylinder, and nitrogen is housed in the gas cylinder.
Utilizing said apparatus to carry out pressure controlled operating method comprises:
1) during insensitive or jam, on computers by automatic control changes valve into manual control earlier when large-scale valve event;
2) first stop valve 1 in the former total inlet pipe road is closed;
3) open external second stop valve 5;
3) open the valve of external source of the gas 9;
4) through the post-decompression pressure of second reduction valve, 7 adjustment, guarantee that the pressure value of second pressure gauge 6 slowly rises to 0.45Mpa-0.5Mpa;
5) valve open when external source of the gas 9 arrives desired location after about 1 minute, and the pressure of second reduction valve 7 is slowly reduced to 0.4Mpa;
6) open first stop valve 1 in the former total inlet pipe road;
7) close external second stop valve 5, close second reduction valve 7, close the valve of external source of the gas 9;
8) whether inspection all operations gas circuit valve is operated normally and is put in place, changes valve into automatic control by manual control on computers, observes valve and follows the tracks of working condition automatically.
This kind be used to solve failsafe valve the time the mode supplied with through newly-increased source of the gas of compressed air source unit; When large-scale valve event during insensitive or jam when not influencing other valve proper functioning; Make active work of fault valve normally eliminate the influence that causes the oxygenerator shutdown because of failsafe valve.This newly-increased source of the gas uses as urgent source of the gas, does not open or moves when insensitive at valve, uses new source of the gas, and the rising cylinder pressure is no more than under the 600kpa pressure, to reach the purpose of normal use, makes the space division system production run stable.

Claims (2)

1. device that is used for solving the space division system failsafe valve; First stop valve (1), first reduction valve (2), first pressure gauge (3) and the valve cylinder (4) that comprise series connection successively; It is characterized in that: be positioned between described first pressure gauge (3) and the valve cylinder (4) and also be serially connected with one road gauge pipe through threeway; One road gauge pipe of described serial connection comprises second stop valve (5), second pressure gauge (6), second reduction valve (7), the 3rd pressure gauge (8) and the external source of the gas (9) of series connection successively; Described second stop valve (5) is connected with valve cylinder (4) with first pressure gauge (3) through threeway, and external source of the gas (9) is positioned at the end of pipeline.
2. a kind of device that is used for solving the space division system failsafe valve according to claim 1 is characterized in that: described external source of the gas (9) is a gas cylinder, and nitrogen is housed in the gas cylinder.
CN 201220132942 2012-03-31 2012-03-31 Device for solving faults of valves in air separation system Withdrawn - After Issue CN202580246U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220132942 CN202580246U (en) 2012-03-31 2012-03-31 Device for solving faults of valves in air separation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220132942 CN202580246U (en) 2012-03-31 2012-03-31 Device for solving faults of valves in air separation system

Publications (1)

Publication Number Publication Date
CN202580246U true CN202580246U (en) 2012-12-05

Family

ID=47249657

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220132942 Withdrawn - After Issue CN202580246U (en) 2012-03-31 2012-03-31 Device for solving faults of valves in air separation system

Country Status (1)

Country Link
CN (1) CN202580246U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635723A (en) * 2012-03-31 2012-08-15 马钢(集团)控股有限公司 Device for solving valve faults in space division system and operation method
CN104019361A (en) * 2014-06-10 2014-09-03 中国海洋石油总公司 Online unclogging device for small-size valves
CN105300614A (en) * 2015-11-25 2016-02-03 江南工业集团有限公司 Vehicle LNG gas cylinder multifunctional valve test system and test method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102635723A (en) * 2012-03-31 2012-08-15 马钢(集团)控股有限公司 Device for solving valve faults in space division system and operation method
CN104019361A (en) * 2014-06-10 2014-09-03 中国海洋石油总公司 Online unclogging device for small-size valves
CN105300614A (en) * 2015-11-25 2016-02-03 江南工业集团有限公司 Vehicle LNG gas cylinder multifunctional valve test system and test method
CN105300614B (en) * 2015-11-25 2018-07-13 江南工业集团有限公司 A kind of automobile-used LNG gas cylinders multifunction valve test system and test method

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GR01 Patent grant
C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20121205

Effective date of abandoning: 20130918

RGAV Abandon patent right to avoid regrant