CN203571422U - High-pressure LNG (Liquefied Natural Gas) gasifying heater - Google Patents
High-pressure LNG (Liquefied Natural Gas) gasifying heater Download PDFInfo
- Publication number
- CN203571422U CN203571422U CN201320690468.9U CN201320690468U CN203571422U CN 203571422 U CN203571422 U CN 203571422U CN 201320690468 U CN201320690468 U CN 201320690468U CN 203571422 U CN203571422 U CN 203571422U
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- China
- Prior art keywords
- inner tube
- tube
- pressure
- outer tube
- lng
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- Expired - Lifetime
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- 239000003949 liquefied natural gas Substances 0.000 title abstract description 35
- 230000008676 import Effects 0.000 claims description 6
- 230000002528 anti-freeze Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000003345 natural gas Substances 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a high-pressure LNG (Liquefied Natural Gas) gasifying heater which is used for a dual-fuel low-speed two-stroke host fuel supply system utilizing the high-pressure natural gas as a fuel. A sleeve structure is adopted by the high-pressure LNG gasifying heater, the LNG needing to be heated and gasified is introduced in an inner tube, and a heating medium cavity is arranged between an outer tube and the inner tube. The inner tube is a 33MPa pressure-grade tube which satisfies the low temperature condition of LNG, and a support ring is sleeved outside the inner tube by welding and used for supporting the inner tube and controlling the flow direction of the heating medium. The outer tube is a 1.0MPa pressure-grade tube and sleeved outside the support ring, the end parts of the outer tube are closed, and in the meantime, the outer tube is positioned axially. The high-pressure LNG gasifying heater is simple in structure, and safe and reliable, the complex manufacturing process of a high-pressure heat exchanger is simplified into a tube machining process, and as a result, the reliability of the heat exchanger is greatly enhanced and the manufacturing cost is reduced. The high-pressure LNG gasifying heater can also be very conveniently arranged on a ship and can be arranged in the direction of a gas supply pipeline.
Description
Technical field
The utility model relates to a kind of high pressure LNG(LNG Liquefied natural gas) gasifying heater, for take the double fuel low speed two-stroke main frame fuel system that high-pressure natural gas is fuel.
Background technique
In recent years, along with pollution of atmosphere is day by day serious, the control increasingly stringent of the whole world to the gas discharging of boats and ships.The developed countries such as America and Europe have set up the control zone of oneself, reach at the appointed time TierII and TierIII emission standard.For solving the severe contamination problem in the Changjiang river and Zhujiang River waters, planned " gasification the Changjiang river " and " the gasification Zhujiang River " engineering.
Boats and ships natural gas fuel can reduce more than 30% carbon emission and the fuel cost of discharged nitrous oxides, more than 98% sulfide emission and 30% left and right.Therefore, to use rock gas instead be that fuel is energy-saving and emission-reduction, improves the most directly effective measures of transport benefits to boats and ships.In recent years, nearly all shipowner is transformed into its existing ship to take the boats and ships that LNG is main fuel considering, is at least transformed into take the boats and ships that LNG is auxiliary fuel, to use LNG in emission control district, Neng various countries, reaches emission standard.
Made by German MAN company's model utility low speed two-stroke double fuel marine engine, need fuel gas supply pressure to reach 30MPa.30MPa LNG Liquefied natural gas heat exchanger manufacturing process is very difficult, and the utility model has almost become the manufacturing process of high pressure heat exchanger into pipe processing technique.Also solved the exhaustless BOG of low-pressure fuel gas equipment such as the generator set precooling problem that liquefies again simultaneously.
Summary of the invention
In order to overcome problems of the prior art, the utility model provides a kind of high pressure LNG gasifying heater.This gasifying heater should simple in structure, easily manufactured, safe and reliable, low cost of manufacture.
The technical solution adopted in the utility model is: a kind of high pressure LNG gasifying heater, comprise inner and outer tubes, described inner tube adopts snakelike disk-like structure, outer tube is arranged on the outside forming sleeves structure of inner tube, the two ends of outer tube are provided with the end plate being fixedly connected with inner tube, by inner tube, outer tube and end plate, formed the heat medium chamber of sealing, in the end of outer tube, be provided with a heat medium import and a heat medium outlet, in the heat medium chamber of straight length, be provided with support ring.
Described inner tube adopts the gapless stainless steel tube of pressure-bearing 33MPa to make.
The structure of pressure-bearing 0.66MPa for described outer tube Bian.
The NG that heat medium in described heat medium chamber is selected antifreeze liquid, steam or come by BOG compressor.
Described support ring adopts the cover weldering round structure that lacks perforate of band on inner pipe.
The beneficial effects of the utility model are: this high pressure LNG gasifying heater adopts sleeve structure, and inner tube is the LNG Liquefied natural gas that needs heating/gasification, is heat medium cavity between outer tube and inner tube.Inner tube adopts 33MPa pressure rating and meets the tubing of LNG cryogenic conditions, supports ring set and is welded in outside inner tube, for supporting inner tube, and controls the heat medium flow direction.Outer tube adopts the tubing of 1.0MPa pressure rating, is sleeved on outside support ring, and end end plate closes produces axially locating simultaneously.This LNG gasifying heater is simple in structure, safe and reliable, and complicated hp heat exchanger manufacture process is simplified to pipe course of working, has greatly strengthened the reliability of heat exchanger, has reduced manufacture cost.On ship, layout is also very convenient, can arrange according to fuel gas supply pipeline direction.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated
Fig. 1 is a kind of structural drawing of high pressure LNG gasifying heater.
Fig. 2 is the A-A sectional view in Fig. 1.
Fig. 3 is the B-B sectional view in Fig. 1.
In figure: 1, inner tube, 2, outer tube, 3, support ring, 3a, circle lack perforate, and 4, end plate, 5, heat medium chamber, 6, LNG import, 7, NG outlet, 8, heat medium import, 9, heat medium outlet.
Embodiment
Fig. 1,2,3 shows a kind of structural drawing of high pressure LNG gasifying heater.In figure, a kind of high pressure LNG gasifying heater, comprises inner tube 1 and outer tube 2, and inner tube 1 adopts snakelike disk-like structure, adopts the gapless stainless steel tube of pressure-bearing 33MPa to make.Outer tube 2 is arranged on the outside forming sleeves structure of inner tube 1, the structure of pressure-bearing 1.0MPa for Bian.The two ends of outer tube 2 are provided with the end plate 4 being fixedly connected with inner tube 1, consist of the heat medium chamber 5 of sealing inner tube 1, outer tube 2 and end plate 4, the BOG that the heat medium in heat medium chamber 5 is selected antifreeze liquid, steam or come by BOG compressor.In the end of outer tube 2, be provided with a heat medium import 8 and a heat medium outlet 9, in the heat medium chamber 5 of straight length, be provided with support ring 3, support ring 3 adopts cover to be welded in the structure of the round perforate 3a of lacking of band in inner tube 1.
Adopt above-mentioned technological scheme, the 30MPa LNG Liquefied natural gas by suction booster enters gasifying heater from LNG inlet tube 6, by inner tube 1 wall and heat medium heat exchange, is gasified and is heated after the temperature that reaches main frame needs, from NG outlet 7, supplies main frame GVU clack boxes.Heat medium is generally the NG(rock gas that BOG compressor comes), with design maximum flow, from heat medium import 8, flow to always, from heat medium outlet 9, flow out.For increasing heat transfer temperature difference, heat medium NG(rock gas) be arranged to the LNG Liquefied natural gas with LNG() flow to contrary.The circle of support ring 3 lack perforate 3a to guarantee heat medium flow direction be turn back mobile, side knock inner tube 1.
Heat medium is except using NG(rock gas), antifreezing solution and steam etc. can also be adopted.
Claims (5)
1. a high pressure LNG gasifying heater, comprise inner tube (1) and outer tube (2), it is characterized in that: described inner tube (1) adopts snakelike disk-like structure, outer tube (2) is arranged on the outside forming sleeves structure of inner tube (1), the two ends of outer tube (2) are provided with the end plate (4) being fixedly connected with inner tube (1), by inner tube (1), outer tube (2) and end plate (4) form the heat medium chamber (5) of sealing, in the end of outer tube (2), be provided with a heat medium import (8) and a heat medium outlet (9), in the heat medium chamber (5) of straight length, be provided with support ring (3).
2. a kind of high pressure LNG gasifying heater according to claim 1, is characterized in that: described inner tube (1) adopts the gapless stainless steel tube of pressure-bearing 33MPa to make.
3. a kind of high pressure LNG gasifying heater according to claim 1, is characterized in that: the structure of pressure-bearing 1.0MPa for described outer tube (2) Bian.
4. a kind of high pressure LNG gasifying heater according to claim 1, is characterized in that: the NG that the heat medium in described heat medium chamber (5) is selected antifreeze liquid, steam or come by BOG compressor.
5. a kind of high pressure LNG gasifying heater according to claim 1, is characterized in that: described support ring (3) adopts cover to be welded in the structure that the upper band circle of inner tube (1) lacks perforate (3a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690468.9U CN203571422U (en) | 2013-11-05 | 2013-11-05 | High-pressure LNG (Liquefied Natural Gas) gasifying heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320690468.9U CN203571422U (en) | 2013-11-05 | 2013-11-05 | High-pressure LNG (Liquefied Natural Gas) gasifying heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203571422U true CN203571422U (en) | 2014-04-30 |
Family
ID=50539153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320690468.9U Expired - Lifetime CN203571422U (en) | 2013-11-05 | 2013-11-05 | High-pressure LNG (Liquefied Natural Gas) gasifying heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203571422U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574285A (en) * | 2013-11-05 | 2014-02-12 | 国鸿液化气机械工程（大连）有限公司 | High-pressure LNG (liquefied natural gas) gasification heater |
| CN105179932A (en) * | 2015-08-14 | 2015-12-23 | 中海石油气电集团有限责任公司 | Floating liquefied natural gas regasification system for low-temperature water area |
| CN111380264A (en) * | 2020-04-01 | 2020-07-07 | 上海海事大学 | A kind of liquefied natural gas gasification cold storage device and method |
-
2013
- 2013-11-05 CN CN201320690468.9U patent/CN203571422U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103574285A (en) * | 2013-11-05 | 2014-02-12 | 国鸿液化气机械工程（大连）有限公司 | High-pressure LNG (liquefied natural gas) gasification heater |
| CN105179932A (en) * | 2015-08-14 | 2015-12-23 | 中海石油气电集团有限责任公司 | Floating liquefied natural gas regasification system for low-temperature water area |
| CN105179932B (en) * | 2015-08-14 | 2018-01-09 | 中海石油气电集团有限责任公司 | A kind of Floating Liquefied Natural Gas regas system for cryo-water |
| CN111380264A (en) * | 2020-04-01 | 2020-07-07 | 上海海事大学 | A kind of liquefied natural gas gasification cold storage device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |