CN102966468B - LNG (liquefied natural gas) coiled-tube-type carburetor - Google Patents
LNG (liquefied natural gas) coiled-tube-type carburetor Download PDFInfo
- Publication number
- CN102966468B CN102966468B CN201210467418.4A CN201210467418A CN102966468B CN 102966468 B CN102966468 B CN 102966468B CN 201210467418 A CN201210467418 A CN 201210467418A CN 102966468 B CN102966468 B CN 102966468B
- Authority
- CN
- China
- Prior art keywords
- lng
- suction port
- coiled
- motor exhaust
- cooling water
- 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.)
- Expired - Fee Related
Links
- 239000003949 liquefied natural gas Substances 0.000 title abstract description 90
- 239000000498 cooling water Substances 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 18
- 239000007789 gas Substances 0.000 abstract description 37
- 238000000034 method Methods 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract 1
- 239000006200 vaporizer Substances 0.000 description 25
- 239000000446 fuel Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention relates to an LNG (liquefied natural gas) coiled-tube-type carburetor and an automatic control device and a control method thereof. The LNG coiled-tube-type carburetor comprises a closed shell and coiled tubes which are arranged in the shell. A cooling water inlet is arranged in one side part of the shell. A cooling water outlet is arranged in the other side part of the shell. The coiled tubes comprise an engine tail gas delivery coiled tube and an LNG delivery coiled tube. The LNG delivery coiled tube and the engine tail gas delivery coiled tube are abreast arranged and are coiled on a central column layer by layer in a staggered way. One side of the shell is additionally provided with an engine tail gas inlet and an LNG inlet. The other side of the shell is additionally provided with an engine tail gas outlet and an LNG outlet. The engine tail gas delivery coiled tube is connected between the engine tail gas inlet and the engine tail gas outlet. The LNG delivery coiled tube is connected between the LNG inlet and the LNG outlet. The LNG coiled-tube-type carburetor has the characteristics of compact and firm structure, large heat dissipation area per unit volume, reasonable tube pass and high operation elasticity.
Description
Technical field
The present invention relates to a kind of LNG(liquefied natural gas LNG Liquefied natural gas) around pipe type evapourator, can put and aboard ship use, also can with using onboard.
Background technique
Storing with the form of cryogenic liquide, when being necessary for gaseous state for during fuel, at this moment just must adopt vaporizer, traditional vaporizer can be divided into according to thermal source classification: heating liquid and air heating two kinds.
The gas outlet temperature that air heating type vaporizer can be heated to restricts by ambient temperature, if regional extreme temperature is lower than designing requirement gas outlet temperature, can not adopt.Heating liquid type vaporizer has: open-frame type vaporizer, submerged combustion type vaporizer, shell of pipe type vaporizer.It is large to there is heavy volume in these traditional vaporizers, heat exchange area per unit volume is little, icing phenomenon is serious, can only two plume heat exchange, operation pressure is low, the working state especially LNG fuel ship that shortcoming easily affected by environment causes it can not be used for heat exchange efficiency exigent under defined volume, and existing vaporizer operating space is comparatively narrow and small, can not meet the operating conditions that air demand has larger change.
Summary of the invention
Based on above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of LNG around pipe type evapourator, this LNG is firm around the compact structure of pipe type evapourator, and heat exchange area per unit volume is large, and rationally, operating flexibility is large in tube side distribution.
One of technological scheme of the present invention is: a kind of LNG is around pipe type evapourator, comprise one close housing and be arranged in housing around pipe, one sidepiece of described housing is provided with cooling water intake, the other side of described housing is provided with cooling water outlet, described adopts threaded pipe around pipe, described around pipe comprise motor exhaust gas transmission around pipe and LNG gas transmission around pipe, described LNG gas transmission around pipe and motor exhaust gas transmission around the mutual side by side and layer by layer Stagger-wrap of pipe on newel, the side of described housing is also provided with motor exhaust suction port and LNG suction port, the opposite side of described housing is also provided with motor exhaust air outlet and LNG air outlet, described motor exhaust gas transmission is connected between motor exhaust suction port and motor exhaust air outlet around pipe, and described LNG gas transmission is connected between LNG suction port and LNG air outlet around pipe.
Further, same layer between pipe and the positioning strip that adopts between pipe of adjacent layer fix it longitudinally and axial spacing.
Further, described cooling water intake, motor exhaust suction port and LNG suction port are respectively arranged with water inlet control valve, tail gas air intake control valve and LNG air intake control valve.
Further, also comprise a control circuit, the signal input part of this control circuit is connected to the sensor on cooling water intake, motor exhaust suction port, LNG suction port, LNG air outlet and cooling water outlet respectively, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit is connected to water inlet control valve, tail gas air intake control valve and LNG air intake control valve respectively.
Two of technological scheme of the present invention is to provide: a kind of LNG is around the automatic controller of pipe type evapourator, it comprises a control circuit, the signal input part of this control circuit is connected to the sensor on cooling water intake, motor exhaust suction port and LNG suction port respectively, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit is connected to water inlet control valve, tail gas air intake control valve and LNG air intake control valve respectively.
Further, described LNG air outlet and cooling water outlet are also provided with sensor, and described sensor comprises pressure transducer, flow transducer and temperature transducer; Described sensor is all connected to the signal input part of control circuit.
Three of technological scheme of the present invention is to provide: a kind of LNG is around the control mode of pipe type evapourator, this control mode is: when the pressure of LNG air outlet, temperature and flow all can not meet target time, first further open water inlet control valve, improve the flow of cooling water intake; When the temperature of cooling water intake reaches the highest, flow reaches maximum, and the temperature of cooling water outlet lower than 10 DEG C time, easily there is icing phenomenon in vaporizer inside, this time-control apparatus opens tail gas air intake control valve.
Compared with prior art: effect of the present invention is embodied in:
One is the heat exchange that simultaneously can there is multiply medium in vaporizer of the present invention, and heat exchange area per unit volume is present ordinary heat exchanger several times.
Two is that the present invention takes full advantage of motor exhaust used heat, greatly improves engine performance, effectively reduces pollution; After motor exhaust introduced by vaporizer in the certain situation of the circulating cooling water yield, because motor exhaust temperature can reach 400 DEG C-600 DEG C, greatly increase vaporizer exchange capability of heat, vaporizer volume can be reduced.
Three is automatic control mode of the present invention and two kinds of working staties, greatly improves the operating flexibility space of vaporizer, has adapted to the multiple working state of LNG fuel ship motor to the requirement of fuel state.
Four is that operation pressure of the present invention is high, and the thermal expansion of heat-transfer pipe can automatic compensating, without thermal stress issues, can effectively prevent cooling water from freezing or the generation of surfusion.
Five to be that the present invention operates use not affected by environment, and each parts selection range is wide, is easy to manufacture, and cost of production is low.
Accompanying drawing explanation
Fig. 1 is that LNG in embodiment is around pipe type evapourator structural representation.
Fig. 2 is the linkage structure schematic diagram of the LNG in embodiment around the automatic controller of pipe type evapourator.
Label declaration: 1-housing 2-newel 3-positioning strip 4-cooling water outlet 5-cooling water intake 6-motor exhaust suction port 7-motor exhaust air outlet 8-LNG suction port 9-LNG air outlet 10-is around pipe 11-water inlet control valve 12-tail gas air intake control valve 13-LNG air intake control valve 14-control circuit;
801-LNG inlet temperature sensor 802-LNG inlet pressure sensor 803-LNG inlet flow rate sensor;
901-LNG outlet temperature sensor 902-LNG outlet pressure sensor 903-LNG outlet flow sensor;
601-tail gas air inlet thermistor 602-tail gas inlet pressure sensor 603-tail gas suction port flow transducer;
501-water intake temperature transducer 502-water intake pressure transducer 503-water intake flow transducer;
401-outlet temperature sensor 402-water outlet pressure transducer 403-water outlet flow transducer.
Embodiment
By describing technology contents of the present invention, structure characteristics in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with mode of execution.
A kind of LNG is around pipe type evapourator, comprise a housing 1 closed and be arranged in housing around pipe 10, one sidepiece of described housing 1 is provided with cooling water intake 5, the other side of described housing 1 is provided with cooling water outlet 4, described adopts threaded pipe around pipe 10, described around pipe 10 comprise motor exhaust gas transmission around pipe and LNG gas transmission around pipe, described LNG gas transmission around pipe and motor exhaust gas transmission around the mutual side by side and layer by layer Stagger-wrap of pipe on newel 2, same layer between pipe 10 and the positioning strip 3 that adopts between pipe 10 of adjacent layer fix it longitudinally and axial spacing.The side of described housing 1 is also provided with motor exhaust suction port 6 and LNG suction port 8, and the opposite side of described housing 1 is also provided with motor exhaust air outlet 7 and LNG air outlet 8; Described cooling water intake 5, motor exhaust suction port 6 and LNG suction port 8 are respectively arranged with water inlet control valve 11, tail gas air intake control valve 12 and LNG air intake control valve 13.Described motor exhaust gas transmission is connected between motor exhaust suction port 6 and motor exhaust air outlet 7 around pipe, and described LNG gas transmission is connected between LNG suction port 8 and LNG air outlet 9 around pipe.This LNG also comprises a control circuit 14 around pipe type evapourator, the signal input part of this control circuit 14 is connected to the sensor on cooling water intake 5, motor exhaust suction port 6, LNG suction port 8, LNG air outlet 9 and cooling water outlet 4 respectively, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit 14 is connected to water inlet control valve, tail gas air intake control valve and LNG air intake control valve respectively.
A kind of LNG is around the automatic controller of pipe type evapourator, it comprises a control circuit 14, the signal input part of this control circuit 14 is connected to the sensor on cooling water intake 5, motor exhaust suction port 6 and LNG suction port 8 respectively, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit 14 is connected to water inlet control valve 11, tail gas air intake control valve 12 and LNG air intake control valve 13 respectively.Described LNG air outlet 9 and cooling water outlet 4 are also provided with sensor, and described sensor comprises pressure transducer, flow transducer and temperature transducer; Described sensor is all connected to the signal input part of control circuit.
Specifically: described LNG suction port 8 is provided with LNG inlet temperature sensor 801, LNG inlet pressure sensor 802 and LNG inlet flow rate sensor 803; Described LNG air outlet 9 is provided with LNG outlet temperature sensor 901, LNG outlet pressure sensor 902 and LNG outlet flow sensor 903; Described motor exhaust suction port 6 is provided with tail gas air inlet thermistor 601, tail gas inlet pressure sensor 602 and tail gas suction port flow transducer 603; Described cooling water intake 5 is provided with water intake temperature transducer 501, water intake pressure transducer 502 and water intake flow transducer 503; Described cooling water outlet 4 is provided with outlet temperature sensor 401, water outlet pressure transducer 402 and water outlet flow transducer 403.
LNG is around a control mode for pipe type evapourator, and this control mode is: when the pressure of LNG air outlet, temperature and flow all can not meet target time, open water inlet control valve first further, improve the flow of cooling water intake; When the temperature of cooling water intake reaches the highest, flow reaches maximum, and the temperature of cooling water outlet lower than 10 DEG C time, easily there is icing phenomenon in vaporizer inside, this time-control apparatus opens tail gas air intake control valve.
Motor exhaust and LNG tube side enter vaporizer side by side, and engine cooling water enters vaporizer shell side, and fluid all adopts the mode of following current.Engine cooling water heats by motor exhaust, and cooling water and LNG conduct heat, and makes fuel reach corresponding technical requirements.
Vaporizer automatic controller can, according to controlled cooling model water, waste gas and LNG stream amount and pressure such as the demand of motor and LNG outlet temperatures, make outlet LNG fuel temperature, flow, pressure meet the demands.
Vaporizer two kinds of mode of operations: when cooling water is enough to meet LNG vaporization, automatic controller can kill engine tail gas suction port valve; When fuel quantity is not enough or temperature is lower, automatic controller controls to open or increase motor exhaust suction port valve, increases LNG evaporating capacity.
Engine cooling water enters vaporizer by cooling water intake 5, motor exhaust enters vaporizer by motor exhaust suction port 6, both carry out heat exchange, the reduction of motor exhaust temperature goes out vaporizer by motor exhaust air outlet 7, engine cooling water is heated further, LNG enters vaporizer from LNG suction port 8 and shell side engine cooling water carries out heat exchange, meet the requirements of state, finally going out vaporizer by LNG air outlet 9 enters motor, and engine cooling water leaves vaporizer by 4 and enters cycle of engine.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (2)
1. a LNG is around pipe type evapourator, comprise one close housing and be arranged in housing around pipe, one sidepiece of described housing is provided with cooling water intake, the other side of described housing is provided with cooling water outlet, it is characterized in that: described around pipe comprise motor exhaust gas transmission around pipe and LNG gas transmission around pipe, described LNG gas transmission around pipe and motor exhaust gas transmission around the mutual side by side and layer by layer Stagger-wrap of pipe on newel, the side of described housing is also provided with motor exhaust suction port and LNG suction port, the opposite side of described housing is also provided with motor exhaust air outlet and LNG air outlet, described motor exhaust gas transmission is connected between motor exhaust suction port and motor exhaust air outlet around pipe, and described LNG gas transmission is connected between LNG suction port and LNG air outlet around pipe, same layer between pipe and the positioning strip that adopts between pipe of adjacent layer fix it longitudinally and axial spacing, described cooling water intake, motor exhaust suction port and LNG suction port are respectively arranged with water inlet control valve, tail gas air intake control valve and LNG air intake control valve.
2. LNG according to claim 1 is around pipe type evapourator, it is characterized in that: also comprise a control circuit, the signal input part of this control circuit is connected to the sensor on cooling water intake, motor exhaust suction port, LNG suction port, LNG air outlet and cooling water outlet respectively, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit is connected to water inlet control valve, tail gas air intake control valve and LNG air intake control valve respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210467418.4A CN102966468B (en) | 2012-11-19 | 2012-11-19 | LNG (liquefied natural gas) coiled-tube-type carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210467418.4A CN102966468B (en) | 2012-11-19 | 2012-11-19 | LNG (liquefied natural gas) coiled-tube-type carburetor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102966468A CN102966468A (en) | 2013-03-13 |
| CN102966468B true CN102966468B (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210467418.4A Expired - Fee Related CN102966468B (en) | 2012-11-19 | 2012-11-19 | LNG (liquefied natural gas) coiled-tube-type carburetor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929580B (en) * | 2015-05-26 | 2017-08-25 | 中国石油集团渤海石油装备制造有限公司 | A kind of well-washing wax-cleaning car and its dewaxing method |
| CN108547712A (en) * | 2018-04-09 | 2018-09-18 | 上海柴油机股份有限公司 | Natural gas engine exhaust gas recycles（EGR）Cooling system and its control method |
| CN110201482A (en) * | 2019-06-30 | 2019-09-06 | 河南查瑞特种设备有限公司 | A kind of energy-saving and environment-friendly boiler exhaust gas processing system |
| CN110469770A (en) * | 2019-08-09 | 2019-11-19 | 英嘉动力科技无锡有限公司 | A kind of novel LNG vaporization device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2523732C (en) * | 2005-11-10 | 2007-09-18 | Westport Research Inc. | System and method for delivering a pressurized gas from a cryogenic storage vessel |
| DE102007042158A1 (en) * | 2007-09-05 | 2009-03-12 | Man Diesel Se | Gas supply system for a gas-fueled internal combustion engine |
| CN201209492Y (en) * | 2008-06-19 | 2009-03-18 | 东风汽车有限公司 | Vaporizer for liquefied natural gas vehicle |
| CN201786483U (en) * | 2010-04-27 | 2011-04-06 | 潍柴动力股份有限公司 | Fuel supply system and vehicle system comprising same |
| CN201763464U (en) * | 2010-08-17 | 2011-03-16 | 华晨汽车集团控股有限公司 | Heating structure for liquefied natural gas evaporator of motor vehicle |
| CN202914202U (en) * | 2012-11-19 | 2013-05-01 | 福州大学 | Liquefied natural gas (LNG) wound tube type vaporizer and automatic control device thereof |
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2012
- 2012-11-19 CN CN201210467418.4A patent/CN102966468B/en not_active Expired - Fee Related
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| CN102966468A (en) | 2013-03-13 |
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Granted publication date: 20150603 |