CN108168828B - A kind of analogy method with LNG fuel ship combustion gas double-wall pipe breakage simulation box - Google Patents
A kind of analogy method with LNG fuel ship combustion gas double-wall pipe breakage simulation box Download PDFInfo
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- CN108168828B CN108168828B CN201711399850.3A CN201711399850A CN108168828B CN 108168828 B CN108168828 B CN 108168828B CN 201711399850 A CN201711399850 A CN 201711399850A CN 108168828 B CN108168828 B CN 108168828B
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- pipe
- combustion gas
- flue gas
- compressed air
- cabinet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
Abstract
The invention discloses a kind of LNG fuel ship combustion gas double-wall pipe breakage simulation box and its analogy methods, the LNG fuel ship combustion gas double-wall pipe breakage simulation box includes cabinet, launches pipe and pressure gauge to sealing plate, simulated flue gas exhaust pipe, compressed air inlet pipe, the aerosol bomb that top of the box is sealed, the simulated flue gas exhaust pipe, compressed air inlet pipe and aerosol bomb launch pipe and are each attached on sealing plate and are connected with the inner cavity of cabinet, pressure gauge is fixed on sealing plate by welding base, is fixed with root valve on the welding base of pressure gauge.The simulation box is capable of the small-bore damaged leak condition of real simulation LNG fuel ship combustion gas double-wall pipe, and the aerosol bomb in simulation box and case is reusable, saves cost, reduces the workload of LNG fuel ship combustion gas double-wall pipe breakage monitoring experiment.
Description
Present patent application is that application No. is a kind of 201710756757.7 patent of invention " LNG on 29th for August in 2017
Fuel ship combustion gas double-wall pipe breakage simulation box and its analogy method " divisional application.
Technical field
The present invention relates to shipbuilding technical fields, simulate more particularly to a kind of LNG fuel ship combustion gas double-wall pipe breakage
Case and its analogy method.
Background technique
On the Large LNG ship using double fuel machine, the Volatile Gas (Boil-off Gas) evaporated in cargo hold is by BOG
Compressor boost is sent into sustainer by double-wall pipe after combustion gas valve group to 6bar, low pressure BOG.During shipping transport,
Ship Vibration, contingency are likely to cause fuel gas pipeline that leakage accident occurs.If combustion gas is persistently leaked without having taken
Effect measure will generate explosion danger when combustion gas reaches a certain concentration.
For such situation, during shipbuilding, damaged simulation monitoring experiment need to be carried out to double-wall pipe, be aided with point
Analysis finally determines sensor mounting location, to be monitored in time to pipeline leakage, to improve security of shipping.
Original double-wall pipe breakage simulated experiment simulates pipe gas using the method for launching aerosol bomb under atmospheric condition
Leakage, has the disadvantage in that
1, aerosol bomb is directly launched, not reproducible utilization；
2, aerosol bomb is placed in open environment, actual pressure in double-wall pipe can not be simulated.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, design a kind of LNG fuel ship combustion gas double-wall pipe breakage mould
Quasi- case and its analogy method.
In order to achieve the above objectives, the technical scheme adopted by the invention is that:
A kind of LNG fuel ship combustion gas double-wall pipe breakage simulation box, the sealing plate being sealed including cabinet, to top of the box,
Simulated flue gas exhaust pipe, compressed air inlet pipe, aerosol bomb launch pipe and pressure gauge, and the simulated flue gas exhaust pipe, compression are empty
Gas air inlet pipe and aerosol bomb launch pipe and are each attached on sealing plate and are connected with the inner cavity of cabinet, and pressure gauge is fixed by welding base
On sealing plate, root valve is fixed on the welding base of pressure gauge.
It further, further include knob, the arranged on left and right sides for shaking hands to be fixed on cabinet lateral wall.
Further, the simulated flue gas exhaust pipe is identical with the structure of compressed air inlet pipe, include welding base, with
The first connecting tube, the second connecting tube of welding base threaded connection, are provided with copper between first connecting tube and the second connecting tube
Matter ball valve, welding base are connected with the inner cavity of cabinet.
Further, the aerosol bomb launches pipe and includes the steel pipe being connected with the inner cavity of cabinet, is fixed on steel pipe top
Blank flange.
Further, the cabinet is the cylindrical body of upper end opening.
A kind of analogy method of LNG fuel ship combustion gas double-wall pipe breakage simulation box, specifically includes the following steps:
Step 1: the blank flange on aerosol bomb dispensing pipe is opened, the copper ball valve on simulated flue gas exhaust pipe is closed, and
The root valve on pressure gauge welding base is opened, meanwhile, compressed-air hose is connected on compressed air inlet pipe；
Step 2: launching the blank flange mouth on pipe from aerosol bomb and launch aerosol bomb into cabinet, be then shut off locking blind plate
Flange, and from compressed air inlet pipe into cabinet injecting compressed air, pass through pressure gauge observe the intracorporal pressure change of case；
Step 3: when the intracorporal pressure of case reaches the setting value of LNG ship double-wall pipe breakage monitoring experiment and pressure is stablized,
Open the copper ball valve on simulated flue gas exhaust pipe；
Step 4: the Flow Field Distribution for the simulated flue gas being discharged from simulated flue gas exhaust pipe is obtained, to simulated flue gas Flow Field Distribution
It is analyzed, obtains the dangerous accumulation point when breakage of combustion gas double-wall pipe, determine that sensor is installed according to the dangerous accumulation point of acquisition
Position.
Positive beneficial effect of the invention: it is the configuration of the present invention is simple, easy to use, it being capable of the combustion of real simulation LNG fuel ship
The small-bore damaged leak condition of gas double-wall pipe, and the aerosol bomb in simulation box and case is reusable, saves cost, reduces
The workload of LNG ship double-wall pipe breakage monitoring experiment.
Detailed description of the invention
Fig. 1 is positive structure diagram of the invention.
Fig. 2 is side structure schematic view of the invention.
The concrete meaning of figure label are as follows: 1 is cabinet, and 2 be sealing plate, and 3 be knob, and 4 be welding base, and 5 be the first connecting tube,
6 be copper ball valve, and 7 be the second connecting tube, and 8 be root valve, and 9 be steel pipe, and 10 be blank flange, and 11 be pressure gauge, and 12 be simulation
Flue gas exhaust pipe, 13 be compressed air inlet pipe, and 14 launch pipe for aerosol bomb.
Specific embodiment
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by shown in the accompanying drawings specific
Embodiment describes the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit model of the invention
It encloses.In addition, in the following description, descriptions of well-known structures and technologies are omitted, it is of the invention to avoid unnecessarily obscuring
Concept.
Illustrate present embodiment in conjunction with Fig. 1, Fig. 2, LNG fuel ship combustion gas double-wall pipe breakage simulation box of the invention is used for mould
The small-bore damaged leak condition of quasi- LNG ship double-wall pipe, including cabinet 1, sealing plate 2, simulated flue gas exhaust pipe, compressed air air inlet
Pipe, aerosol bomb launch pipe and pressure gauge.
The cabinet 1 is the cylindrical body of upper end opening, and sealing plate 2 is for being sealed the top of cabinet 1.The simulation cigarette
Gas exhaust pipe, compressed air inlet pipe and aerosol bomb launch pipe and are each attached on sealing plate 2 and are connected with the inner cavity of cabinet 1, press
Power table 11 is fixed on sealing plate 2 by welding base 4, is fixed with root valve 8 on the welding base 4 of pressure gauge.In the present embodiment, mould
Quasi- flue gas exhaust pipe is identical with the structure of compressed air inlet pipe, first for including welding base 4, being threadedly coupled with welding base 4
Connecting tube 5, the second connecting tube 7, are provided with copper ball valve 6 between first connecting tube 5 and the second connecting tube 7, welding base 4 with
The inner cavity of cabinet 1 is connected.Aerosol bomb launches pipe and includes the steel pipe 9 being connected with the inner cavity of cabinet 1 and be fixed on steel pipe 9
The blank flange 10 at top, blank flange 10 can be sealed steel pipe 9.
In order to facilitate taking and placing, the LNG fuel ship combustion gas double-wall pipe breakage simulation box of the application further includes knob, the knob
It is fixed on the arranged on left and right sides of cabinet lateral wall.
When the small-bore damaged leak condition to LNG ship double-wall pipe is simulated, specifically includes the following steps:
Step 1: the blank flange 10 on aerosol bomb dispensing pipe is opened, the copper ball valve 6 on simulated flue gas exhaust pipe is closed,
And the root valve 8 on pressure gauge welding base is opened, meanwhile, compressed-air hose is connected on compressed air inlet pipe；
Step 2: launching the blank flange mouth on pipe from aerosol bomb and launch aerosol bomb into cabinet 1, it is blind to be then shut off locking
Plate flange 10, and from compressed air inlet pipe into cabinet injecting compressed air, pass through pressure gauge 11 observe cabinet 1 in pressure
Variation；
Step 3: when the pressure in cabinet 1 reaches the setting value of LNG ship double-wall pipe breakage monitoring experiment and pressure is stablized,
Open the copper ball valve on simulated flue gas exhaust pipe；
Step 4: the Flow Field Distribution for the simulated flue gas being discharged from simulated flue gas exhaust pipe is obtained, to simulated flue gas Flow Field Distribution
It is analyzed, obtains the dangerous accumulation point when breakage of combustion gas double-wall pipe, determine that sensor is installed according to the dangerous accumulation point of acquisition
Position.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that；Still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (1)
1. a kind of analogy method with LNG fuel ship combustion gas double-wall pipe breakage simulation box, which is characterized in that LNG ship double-walled
When the small-bore damaged leak condition of pipe is simulated, with LNG fuel ship combustion gas double-wall pipe breakage simulation box, the simulation box knot
Structure includes cabinet (1), to sealing plate (2), the simulated flue gas exhaust pipe (12), compressed air air inlet being sealed at the top of cabinet (1)
Manage (13), aerosol bomb launches pipe (14) and pressure gauge (11), the simulated flue gas exhaust pipe (12), compressed air inlet pipe (13)
It is each attached on sealing plate (2) with aerosol bomb dispensing pipe (14) and is connected with the inner cavity of cabinet (1), pressure gauge (11) passes through welding
Seat (4) is fixed on sealing plate (2), and root valve (8) are fixed on the welding base of pressure gauge (11), specifically includes the following steps:
Step 1: opening the blank flange (10) on aerosol bomb dispensing pipe, close the copper ball on simulated flue gas exhaust pipe (12)
Valve, and the root valve (8) on pressure gauge welding base is opened, meanwhile, it is soft that compressed air is connected on compressed air inlet pipe (13)
Pipe；
Step 2: launching the blank flange mouth on pipe (14) from aerosol bomb and launch aerosol bomb into cabinet (1), be then shut off locking
Blank flange (10), and from compressed air inlet pipe (13) to cabinet (1) interior injecting compressed air, it is observed by pressure gauge (11)
The intracorporal pressure change of case；
Step 3: when the intracorporal pressure of case reaches the setting value of LNG fuel ship combustion gas double-wall pipe breakage monitoring experiment and pressure stabilization
When, open the copper ball valve on simulated flue gas exhaust pipe (12)；
Step 4: the Flow Field Distribution for the simulated flue gas being discharged from simulated flue gas exhaust pipe (12) is obtained, to simulated flue gas Flow Field Distribution
It is analyzed, obtains the dangerous accumulation point when breakage of combustion gas double-wall pipe, determine that sensor is installed according to the dangerous accumulation point of acquisition
Position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399850.3A CN108168828B (en) | 2017-08-29 | 2017-08-29 | A kind of analogy method with LNG fuel ship combustion gas double-wall pipe breakage simulation box |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710756757.7A CN107389291B (en) | 2017-08-29 | 2017-08-29 | A kind of LNG fuel ship combustion gas double-wall pipe breakage simulation box and its analogy method |
| CN201711399850.3A CN108168828B (en) | 2017-08-29 | 2017-08-29 | A kind of analogy method with LNG fuel ship combustion gas double-wall pipe breakage simulation box |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710756757.7A Division CN107389291B (en) | 2017-08-29 | 2017-08-29 | A kind of LNG fuel ship combustion gas double-wall pipe breakage simulation box and its analogy method |
Publications (2)
| Publication Number | Publication Date |
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| CN108168828A CN108168828A (en) | 2018-06-15 |
| CN108168828B true CN108168828B (en) | 2019-10-11 |
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| CN201711399850.3A Active CN108168828B (en) | 2017-08-29 | 2017-08-29 | A kind of analogy method with LNG fuel ship combustion gas double-wall pipe breakage simulation box |
| CN201710756757.7A Active CN107389291B (en) | 2017-08-29 | 2017-08-29 | A kind of LNG fuel ship combustion gas double-wall pipe breakage simulation box and its analogy method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108194389B (en) * | 2017-12-25 | 2020-01-14 | 沪东中华造船(集团)有限公司 | Device for strengthening ventilation of generator room of LNG ship |
| CN108827560B (en) * | 2018-05-04 | 2021-06-18 | 中国核电工程有限公司 | Method for detecting damage position of inner wall of double-wall pipe |
| CN110220653A (en) * | 2019-07-18 | 2019-09-10 | 中船动力有限公司 | Double-wall pipe air-tightness detection tool and detection method |
| CN110899758A (en) * | 2019-10-30 | 2020-03-24 | 沪东中华造船(集团)有限公司 | Installation method of electronic cabinet of ship special equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102008008419A1 (en) * | 2008-02-09 | 2009-09-10 | Uhde Gmbh | Method and device for receiving and transferring fine to coarse-grained solids from a container into a system of higher pressure |
| CN201951709U (en) * | 2010-11-07 | 2011-08-31 | 沪东中华造船(集团)有限公司 | Ventilation system for fuel conveying pipe of two-fuel LNG ship |
| CN203395571U (en) * | 2013-06-25 | 2014-01-15 | 上海佳豪船舶工程设计股份有限公司 | Fuel adding device applicable for small LNG (liquefied natural gas) power driving vessel |
| CN103899440B (en) * | 2014-03-11 | 2016-05-04 | 哈尔滨工程大学 | A kind of dual fuel engine LNG gasification system peculiar to vessel and control method thereof |
| KR101588685B1 (en) * | 2014-04-18 | 2016-01-27 | 삼성중공업 주식회사 | Apparatus and method for leak detection of liquified gas |
| CN104019359B (en) * | 2014-06-09 | 2017-01-18 | 山东交通学院 | Protection device of fuel gas system of LNG single-fuel ship |
| CN204383723U (en) * | 2014-09-10 | 2015-06-10 | 沪东中华造船(集团)有限公司 | A kind of LNG of the Type B cargo hold in LNG ship leaks and collects device |
| CN104728595B (en) * | 2015-03-31 | 2017-11-17 | 张家港富瑞特种装备股份有限公司 | A kind of LNG fuel tank |
| CN205298866U (en) * | 2016-01-21 | 2016-06-08 | 亚达管道系统股份有限公司 | Marine gas double -wall pipe structure |
| CN206201430U (en) * | 2016-10-09 | 2017-05-31 | 天津中天富泰科技有限公司 | Easy-to-dismount double-walled pipe mold |
| CN106679533B (en) * | 2016-12-27 | 2019-08-23 | 沪东中华造船(集团)有限公司 | Detecting tool system and detection method for LNG ship cargo tank three-dimensional plate CM node |
| CN206348142U (en) * | 2017-01-04 | 2017-07-21 | 江南造船(集团)有限责任公司 | Double-wall pipe elastic support dynamic fatigue test device |
| CN106969342B (en) * | 2017-04-26 | 2023-03-21 | 西安西热锅炉环保工程有限公司 | System and method for low-temperature economizer abrasion leakage alarm prevention and control |
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2017
- 2017-08-29 CN CN201711399850.3A patent/CN108168828B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107389291A (en) | 2017-11-24 |
| CN107389291B (en) | 2019-06-18 |
| CN108168828A (en) | 2018-06-15 |
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