CN103016959A - Method for testing leakage of oxygen pipeline before driving - Google Patents
Method for testing leakage of oxygen pipeline before driving Download PDFInfo
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- CN103016959A CN103016959A CN2012105408978A CN201210540897A CN103016959A CN 103016959 A CN103016959 A CN 103016959A CN 2012105408978 A CN2012105408978 A CN 2012105408978A CN 201210540897 A CN201210540897 A CN 201210540897A CN 103016959 A CN103016959 A CN 103016959A
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Abstract
The invention discloses a method for testing leakage of an oxygen pipeline before driving, which comprises the following steps of: (1) firstly, detecting whether fifth and sixth switching valves are leaked; (2) continuously detecting whether a third emptying valve and a regulating valve are leaked; and (3) continuously detecting whether a seventh switching valve is leaked. After the method disclosed by the invention is adopted, the leakage of the oxygen pipeline can be determined before driving and stable and safe production is ensured.
Description
Technical field
The present invention relates to the method for the front oxygen pipeline leak-testing of gasification oven driving.
Background technique
SHELL dry coal powder gasification technique is to be researched and developed successfully the seventies in last century by Holland, and be successfully applied to Cogeneration Project, the mid-90 is introduced China, has had at present 23 cover gasification ovens to settle China, and the introduction of this technology has extremely far-reaching influence to China's Chemical Industry.This gasification oven is take coal dust and oxygen as raw material, is mainly used to produce chemical industry material synthesis gas and industrial fuel gas, has that single stove throughput is large, gasification efficiency is high, a remarkable advantage such as safety and environmental protection, in the field of business have significantly unexpectedly strive advantage and promotion potential.
Gasification oven has four coal burners, and every burner material has steam, oxygen, coal dust.Oxygen pipeline concerns production safety, and oxygen leakage is breakneck security incident.Oxygen pipeline passes through the first and second switch valves 3 that are arranged in parallel as shown in the figure, 4 with heat exchanger 2 and go the pipeline of startup burner to link to each other, go on the pipeline of startup burner startup burner switch valve 5 to be installed, through third and fourth switch valve 7 of oxygen by being arranged in parallel after the heat exchanger heat exchange, 8 enter four coal burners, be arranged in parallel the third and fourth switch valve 7, be connected with the first atmospheric valve 6 on 8 the pipeline, then oxygen is divided into four branch roads and leads to four coal burners, be connected with the second atmospheric valve 9 in turn in each oxygen manifold, the the 5th and the 6th switch valve 10 that is arranged in parallel, 11, pressure gauge 12, the 3rd atmospheric valve 14, modulating valve 15 and the 7th switch valve 16, and burner 17.Wherein every group of of being arranged in parallel in the switch valve opens first, when pressure reduction reaches certain numerical value, closes this valve, opens in every group of switch valve that is arranged in parallel another again.The nitrogen pipeline that nitrogen valve is housed is communicated with oxygen pipeline before being positioned at heat exchanger 2.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art, provide a kind of front definite oxygen pipeline of driving whether to leak, guarantee the test method of a kind of front oxygen pipeline leakage of driving that stability and safety is produced.
Technological scheme of the present invention is:
The test method that a kind of front oxygen pipeline of driving is revealed, it may further comprise the steps:
(1) at first detects the 5th and the 6th switch valve and have or not leakage, step is: (a) the first and second switch valve startup burner switch valves and the first atmospheric valve are closed, open the nitrogen valve of nitrogen pipeline, before nitrogen was delivered to the 5th and the 6th switch valve, the line pressure that makes the oxygen manifold of leading to burner was 4.55-4.60MPa; (b) opening the 3rd atmospheric valve makes manometric reading less than 0.05MPa; (c) the 3rd atmospheric valve cuts out, in second, if manometric reading increases less than 0.25MPa, judge that then the 5th and the 6th switch valve is without leakage at 40-60;
(2) continue detection the 3rd atmospheric valve and modulating valve and have or not leakage, step is: (a) the 3rd atmospheric valve is opened, made manometric reading less than 0.05MPa, then close the 3rd atmospheric valve; (b) open the 5th switch valve, when manometric reading is 4.55-4.60MPa, close the 5th switch valve, in second, if manometric reading descends less than 0.2MPa, judge that then the 3rd atmospheric valve and modulating valve are without leakage at 40-60;
(3) continue to detect the 7th switch valve and have or not leakage, step is: open the 5th switch valve, when the first manometric reading is 4.55-4.60MPa, open modulating valve, in second, if manometric reading descends less than 0.2MPa, judge that then the 7th switch valve is without leakage at 40-60.
Adopt the inventive method front definite oxygen pipeline of can driving whether to leak, guaranteed stability and safety production.
Description of drawings
Accompanying drawing is the oxygen pipeline schematic representation that a kind of test method of driving front oxygen pipeline leakage of the present invention need be tested.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in detail:
As shown in the figure, the test method that a kind of front oxygen pipeline of driving is revealed, it may further comprise the steps: (1) is at first detected the 5th and the 6th switch valve 10,11 and is had or not leakage, step is: (a) the first and second switch valves 3,4, startup burner switch valve 5 and the first atmospheric valve 6 are closed, open the nitrogen valve 1 of nitrogen pipeline, before nitrogen was delivered to the 5th and the 6th switch valve 10,11, the line pressure that makes the oxygen manifold of leading to burner was 4.55-4.60MPa; (b) opening the 3rd atmospheric valve 14 makes the reading of pressure gauge 12 less than 0.05MPa; (c) the 3rd atmospheric valve 14 cuts out, in second, if the reading of pressure gauge 12 increases less than 0.25MPa, judge that then the 5th and the 6th switch valve 10,11 is without leaking at 40-60; (2) continue detection the 3rd atmospheric valve 14 and modulating valve 16 and have or not leakage, step is: (a) the 3rd atmospheric valve 14 is opened, made the reading of pressure gauge 12 less than 0.05MPa, then close the 3rd atmospheric valve 14; (b) open the 5th switch valve 10, when the reading of pressure gauge 12 is 4.55-4.60MPa, close the 5th switch valve 10, in second, if the reading of pressure gauge 12 descends less than 0.2MPa, judge that then the 3rd atmospheric valve 14 and modulating valve 16 are without leaking at 40-60; (3) continue to detect the 7th switch valve 16 and have or not leakage, step is: open the 5th switch valve 10, when the reading of the first pressure gauge 12 is 4.55-4.60MPa, open modulating valve 16, at 40-60 in second, if the reading of pressure gauge 12 descends less than 0.2MPa, judge that then the 7th switch valve 16 is without leaking.
Embodiment 1
(1) at first detects the 5th and the 6th switch valve 10,11 and have or not leakage, step is: (a) the first and second switch valves 3,4, startup burner switch valve 5 and the first atmospheric valve 6 are closed, open the nitrogen valve 1 of nitrogen pipeline, before nitrogen was delivered to the 5th and the 6th switch valve 10,11, the line pressure that makes the oxygen manifold of leading to burner was 4.55MPa; (b) opening the 3rd atmospheric valve 14 makes the reading of pressure gauge 12 less than 0.05MPa; (c) the 3rd atmospheric valve 14 cuts out, in 40 seconds, the reading of pressure gauge 12 increases less than 0.25MPa, judges that the 5th and the 6th switch valve 10,11 is without leaking;
(2) continue detection the 3rd atmospheric valve 14 and modulating valve 16 and have or not leakage, step is: (a) the 3rd atmospheric valve 14 is opened, made the reading of pressure gauge 12 less than 0.05MPa, then close the 3rd atmospheric valve 14; (b) open the 5th switch valve 10, when the reading of pressure gauge 12 is 4.58MPa, close the 5th switch valve 10, in 48 seconds, the reading of pressure gauge 12 descends less than 0.2MPa, judges that the 3rd atmospheric valve 14 and modulating valve 16 are without leaking;
(3) continue to detect the 7th switch valve 16 and have or not leakage, step is: open the 5th switch valve 10, when the reading of the first pressure gauge 12 is 4.55MPa, open modulating valve 15, in 45 seconds, the reading of pressure gauge 12 descends less than 0.2MPa, judges that the 7th switch valve 16 is without leaking.
Through testing: judged accurately whether oxygen pipeline leaks, guaranteed stability and safety production.
(1) at first detects the 5th and the 6th switch valve 10,11 and have or not leakage, step is: (a) the first and second switch valves 3,4, startup burner switch valve 5 and the first atmospheric valve 6 are closed, open the nitrogen valve 1 of nitrogen pipeline, before nitrogen was delivered to the 5th and the 6th switch valve 10,11, the line pressure that makes the oxygen manifold of leading to burner was 4.58MPa; (b) opening the 3rd atmospheric valve 14 makes the reading of pressure gauge 12 less than 0.05MPa; (c) the 3rd atmospheric valve 14 cuts out, in 60 seconds, the reading of pressure gauge 12 increases less than 0.25MPa, judges that the 5th and the 6th switch valve 10,11 is without leaking;
(2) continue detection the 3rd atmospheric valve 14 and modulating valve 16 and have or not leakage, step is: (a) the 3rd atmospheric valve 14 is opened, made the reading of pressure gauge 12 less than 0.05MPa, then close the 3rd atmospheric valve 14; (b) open the 5th switch valve 10, when the reading of pressure gauge 12 is 4.55MPa, close the 5th switch valve 10, in 40 seconds, the reading of pressure gauge 12 descends less than 0.2MPa, judges that the 3rd atmospheric valve 14 and modulating valve 16 are without leaking;
(3) continue to detect the 7th switch valve 16 and have or not leakage, step is: open the 5th switch valve 10, when the reading of the first pressure gauge 12 is 4.60MPa, open modulating valve 15, in 40 seconds, the reading of pressure gauge 12 descends less than 0.2MPa, judges that the 7th switch valve 16 is without leaking.
Through testing: judged accurately whether oxygen pipeline leaks, guaranteed stability and safety production.
Embodiment 3
(1) at first detects the 5th and the 6th switch valve 10,11 and have or not leakage, step is: (a) the first and second switch valves 3,4, startup burner switch valve 5 and the first atmospheric valve 6 are closed, open the nitrogen valve 1 of nitrogen pipeline, before nitrogen was delivered to the 5th and the 6th switch valve 10,11, the line pressure that makes the oxygen manifold of leading to burner was 4.60MPa; (b) opening the 3rd atmospheric valve 14 makes the reading of pressure gauge 12 less than 0.05MPa; (c) the 3rd atmospheric valve 14 cuts out, in 50 seconds, the reading of pressure gauge 12 increases less than 0.25MPa, judges that the 5th and the 6th switch valve 10,11 is without leaking;
(2) continue detection the 3rd atmospheric valve 14 and modulating valve 16 and have or not leakage, step is: (a) the 3rd atmospheric valve 14 is opened, made the reading of pressure gauge 12 less than 0.05MPa, then close the 3rd atmospheric valve 14; (b) open the 5th switch valve 10, when the reading of pressure gauge 12 is 4.60MPa, close the 5th switch valve 10, in 60 seconds, the reading of pressure gauge 12 descends less than 0.2MPa, judges that the 3rd atmospheric valve 14 and modulating valve 16 are without leaking;
(3) continue to detect the 7th switch valve 16 and have or not leakage, step is: open the 5th switch valve 10, when the reading of the first pressure gauge 12 is 4.59MPa, open modulating valve 15, in 60 seconds, the reading of pressure gauge 12 descends less than 0.2MPa, judges that the 7th switch valve 16 is without leaking.
Through testing: judged accurately whether oxygen pipeline leaks, guaranteed stability and safety production.
Claims (1)
1. the test method that oxygen pipeline is revealed before the driving is characterized in that it may further comprise the steps:
(1) at first detects the 5th and the 6th switch valve and have or not leakage, step is: (a) the first and second switch valve startup burner switch valves and the first atmospheric valve are closed, open the nitrogen valve of nitrogen pipeline, before nitrogen was delivered to the 5th and the 6th switch valve, the line pressure that makes the oxygen manifold of leading to burner was 4.55-4.60MPa; (b) opening the 3rd atmospheric valve makes manometric reading less than 0.05MPa; (c) the 3rd atmospheric valve cuts out, in second, if manometric reading increases less than 0.25MPa, judge that then the 5th and the 6th switch valve is without leakage at 40-60;
(2) continue detection the 3rd atmospheric valve and modulating valve and have or not leakage, step is: (a) the 3rd atmospheric valve is opened, made manometric reading less than 0.05MPa, then close the 3rd atmospheric valve; (b) open the 5th switch valve, when manometric reading is 4.55-4.60MPa, close the 5th switch valve, in second, if manometric reading descends less than 0.2MPa, judge that then the 3rd atmospheric valve and modulating valve are without leakage at 40-60;
(3) continue to detect the 7th switch valve and have or not leakage, step is: open the 5th switch valve, when the first manometric reading is 4.55-4.60MPa, open modulating valve, in second, if manometric reading descends less than 0.2MPa, judge that then the 7th switch valve is without leakage at 40-60.
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| CN2012105408978A CN103016959A (en) | 2012-12-12 | 2012-12-12 | Method for testing leakage of oxygen pipeline before driving |
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| CN2012105408978A CN103016959A (en) | 2012-12-12 | 2012-12-12 | Method for testing leakage of oxygen pipeline before driving |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197177A (en) * | 2020-10-16 | 2021-01-08 | 江苏核电有限公司 | Pipeline leakage point positioning device based on oxygen measurement method and detection positioning method thereof |
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| JPS6258127A (en) * | 1985-09-06 | 1987-03-13 | Fuji Tool & Die Co Ltd | Air leak tester |
| CN1167913A (en) * | 1996-06-07 | 1997-12-17 | 丰田自动车株式会社 | Pressure leakage measurement method and pressure leakage measurement device |
| CN1258351A (en) * | 1997-05-26 | 2000-06-28 | 马丁·莱曼 | Method and apparatus for leak testing |
| CN101654630A (en) * | 2009-09-01 | 2010-02-24 | 水煤浆气化及煤化工国家工程研究中心 | Safe logic control method of pulverized coal gasifier |
| CN102618332A (en) * | 2011-12-23 | 2012-08-01 | 航天长征化学工程股份有限公司 | Starting/stopping control method and system for powdered coal pressure gasification device |
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2012
- 2012-12-12 CN CN2012105408978A patent/CN103016959A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4575807A (en) * | 1983-08-29 | 1986-03-11 | General Motors Corporation | Method and apparatus for leak test |
| JPS6258127A (en) * | 1985-09-06 | 1987-03-13 | Fuji Tool & Die Co Ltd | Air leak tester |
| CN1167913A (en) * | 1996-06-07 | 1997-12-17 | 丰田自动车株式会社 | Pressure leakage measurement method and pressure leakage measurement device |
| CN1258351A (en) * | 1997-05-26 | 2000-06-28 | 马丁·莱曼 | Method and apparatus for leak testing |
| CN101654630A (en) * | 2009-09-01 | 2010-02-24 | 水煤浆气化及煤化工国家工程研究中心 | Safe logic control method of pulverized coal gasifier |
| CN102618332A (en) * | 2011-12-23 | 2012-08-01 | 航天长征化学工程股份有限公司 | Starting/stopping control method and system for powdered coal pressure gasification device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197177A (en) * | 2020-10-16 | 2021-01-08 | 江苏核电有限公司 | Pipeline leakage point positioning device based on oxygen measurement method and detection positioning method thereof |
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Application publication date: 20130403 |