CN102635723A - Device for solving valve faults in space division system and operation method - Google Patents
Device for solving valve faults in space division system and operation method Download PDFInfo
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- CN102635723A CN102635723A CN2012100914884A CN201210091488A CN102635723A CN 102635723 A CN102635723 A CN 102635723A CN 2012100914884 A CN2012100914884 A CN 2012100914884A CN 201210091488 A CN201210091488 A CN 201210091488A CN 102635723 A CN102635723 A CN 102635723A
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- space division
- pressure gauge
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Abstract
The invention discloses a device for solving valve faults in a space division system and an operation method thereof. The device comprises a first stop valve (1), a first decompression valve (2), a first pressure meter (3) and a valve air cylinder (4) which are sequentially connected in series, wherein one path of instrument pipe is further serially connected between the first pressure meter (3) and the valve air cylinder (4) through a tee joint; one path of the serially-connected instrument pipe comprises a second stop valve (5), a second pressure meter (6), a second decompression valve (7), a third pressure meter (8) and an external air source (9) which are sequentially connected in series; and the external air source (9) is located at the tail end of a pipeline. The device for solving the valve faults in the space division system does not influence normal work of the other valves through a newly-increased air source supply manner when a large-sized valve works insensitively or is clamped, so that the broken valve can work normally and the influences of stopping an oxygen generator due to the valve faults are eliminated.
Description
Technical field
The present invention relates to a kind of air separation facility, especially relate to a kind of device and operating method thereof when solving in the space division system big valve or not having manually operated valve gas path failure to occur.
Background technique
" air separation facility or space division system " is the technical term of related domain, refers to 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.
Summary of the invention
Technical problem to be solved by this invention is to the problem that exists in the existing technology a kind of device and operating method 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.
Technological scheme of the present invention is first stop valve, first reduction valve, first pressure gauge and the valve cylinder that device that this kind is used for solving the space division system failsafe valve comprises 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.
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 in the former total inlet pipe road is closed;
3) open external second stop valve;
3) open the valve of external source of the gas;
4) adjust post-decompression pressure through second reduction valve, guarantee that the second manometric pressure value slowly rises to 0.45Mpa-0.5Mpa;
5) when the valve open of external source of the gas to desired location after about 1 minute, 0.4Mpa is slowly fallen in the pressure of second reduction valve;
6) open first stop valve in the former total inlet pipe road;
7) close external second stop valve, close second reduction valve, close the valve of external source of the gas;
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.
Air separation facility and operating method thereof that this kind with said structure is used to solve the valve instrument gas path failure have the following advantages:
1. this kind device, the mode of supplying with through newly-increased source of the gas, 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, rationally, and investment cost is low; Operating cost is extremely low, and is easy to operate, and 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 present invention is described further:
Fig. 1 is a structural representation of the present invention.
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 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.
Utilize said apparatus, carry out pressure controlled operating method and comprise:
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.
The mode that this device is supplied with through newly-increased source of the gas, 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.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 (3)
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.
3. utilize claim 1 or the 2 described operating method that are used for solving the device of space division system failsafe valve, it is characterized in that: described 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) adjust post-decompression pressure through second reduction valve (7), 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), the valve of closing 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210091488 CN102635723B (en) | 2012-03-31 | 2012-03-31 | Device for solving valve faults in space division system and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210091488 CN102635723B (en) | 2012-03-31 | 2012-03-31 | Device for solving valve faults in space division system and operation method |
Publications (2)
| Publication Number | Publication Date |
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| CN102635723A true CN102635723A (en) | 2012-08-15 |
| CN102635723B CN102635723B (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210091488 Active CN102635723B (en) | 2012-03-31 | 2012-03-31 | Device for solving valve faults in space division system and operation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908219A (en) * | 2017-05-02 | 2017-06-30 | 中国核动力研究设计院 | The critical flow Experimental Control System and method of a kind of many valve group linkages |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000136882A (en) * | 1999-12-06 | 2000-05-16 | Ckd Corp | Vacuum pressure control valve |
| CN101782753A (en) * | 2009-12-31 | 2010-07-21 | 河北省首钢迁安钢铁有限责任公司 | Method for making single booster expansion machine shut down in air-separation internal compression flow |
| CN201825723U (en) * | 2010-09-21 | 2011-05-11 | 宝山钢铁股份有限公司 | Low-pressure liquid oxygen evaporator |
| US20110107792A1 (en) * | 2009-11-10 | 2011-05-12 | Generon Igs, Inc. | Shipboard hybrid system for making dry, oil-free, utility air and inert gas |
| CN202580246U (en) * | 2012-03-31 | 2012-12-05 | 马钢(集团)控股有限公司 | Device for solving faults of valves in air separation system |
-
2012
- 2012-03-31 CN CN 201210091488 patent/CN102635723B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000136882A (en) * | 1999-12-06 | 2000-05-16 | Ckd Corp | Vacuum pressure control valve |
| US20110107792A1 (en) * | 2009-11-10 | 2011-05-12 | Generon Igs, Inc. | Shipboard hybrid system for making dry, oil-free, utility air and inert gas |
| CN101782753A (en) * | 2009-12-31 | 2010-07-21 | 河北省首钢迁安钢铁有限责任公司 | Method for making single booster expansion machine shut down in air-separation internal compression flow |
| CN201825723U (en) * | 2010-09-21 | 2011-05-11 | 宝山钢铁股份有限公司 | Low-pressure liquid oxygen evaporator |
| CN202580246U (en) * | 2012-03-31 | 2012-12-05 | 马钢(集团)控股有限公司 | Device for solving faults of valves in air separation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908219A (en) * | 2017-05-02 | 2017-06-30 | 中国核动力研究设计院 | The critical flow Experimental Control System and method of a kind of many valve group linkages |
| CN106908219B (en) * | 2017-05-02 | 2019-01-29 | 中国核动力研究设计院 | A kind of the critical flow Experimental Control System and method of more valve group linkages |
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| CN102635723B (en) | 2013-09-18 |
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