CN102966468A - LNG (liquefied natural gas) coiled-tube-type carburetor and automatic control device and control method thereof - Google Patents
LNG (liquefied natural gas) coiled-tube-type carburetor and automatic control device and control method thereof Download PDFInfo
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- CN102966468A CN102966468A CN2012104674184A CN201210467418A CN102966468A CN 102966468 A CN102966468 A CN 102966468A CN 2012104674184 A CN2012104674184 A CN 2012104674184A CN 201210467418 A CN201210467418 A CN 201210467418A CN 102966468 A CN102966468 A CN 102966468A
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- 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
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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 aboard ship and use, also can be with using onboard.
Background technique
Form with cryogenic liquide stores, and is necessary for gaseous state when being used for fuel, at this moment just must adopt vaporizer, and classification can be divided into traditional vaporizer: two kinds of heating liquid and air heating according to thermal source.
The gas outlet temperature that air heating type vaporizer can be heated to is restricted by ambient temperature, if regional extreme temperature is lower than designing requirement gas outlet temperature then can not adopts.Heating liquid type vaporizer has: open-frame type vaporizer, submerged combustion type vaporizer, shell of pipe type vaporizer.These traditional vaporizers exist heavy volume large, heat exchange area per unit volume is little, the phenomenon of freezing is serious, can only two plume heat exchange, operation pressure is low, easily shortcoming affected by environment causes it can not be used for the working state of exigent heat exchange efficiency under defined volume especially LNG fuel ship, and existing vaporizer operating space is comparatively narrow and small, can not satisfy the operating conditions that air demand has larger variation.
The model utility content
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 and automatic controller and control mode, this LNG is firm around the compact structure of pipe type evapourator, and heat exchange area per unit volume is large, tube side distributes rationally, and operating flexibility is large.
One of technological scheme of the present invention is: a kind of LNG is around pipe type evapourator, comprise the housing of a sealing and be arranged in the 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 around pipe employing threaded pipe, described around pipe comprise the motor exhaust gas transmission around the pipe and the LNG gas transmission around pipe, described LNG gas transmission is wrapped on the newel around managing mutually to interlock side by side and layer by layer around pipe and motor exhaust gas transmission, one side of described housing also is provided with motor exhaust suction port and LNG suction port, and the opposite side of described housing also is provided with motor exhaust air outlet and LNG air outlet; Described motor exhaust gas transmission is connected between motor exhaust suction port and the motor exhaust air outlet around pipe, and described LNG gas transmission is connected between LNG suction port and the LNG air outlet around pipe.
Further, same layer around between the pipe and the positioning strip that between pipe, adopts of adjacent layer fix its vertical and axial spacing.
Further, be respectively arranged with water inlet control valve, tail gas air intake control valve and LNG air intake control valve on described cooling water intake, motor exhaust suction port and the LNG suction port.
Further, also comprise a control circuit, the signal input part of this control circuit is connected to respectively the sensor on cooling water intake, motor exhaust suction port, LNG suction port, LNG air outlet and the cooling water outlet, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit is connected to respectively water inlet control valve, tail gas air intake control valve and LNG air intake control valve.
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 respectively the sensor on cooling water intake, motor exhaust suction port and the LNG suction port, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit is connected to respectively water inlet control valve, tail gas air intake control valve and LNG air intake control valve.
Further, also be provided with sensor on described LNG air outlet and the cooling water outlet, described sensor comprises pressure transducer, flow transducer and temperature transducer; Described sensor all is 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 pressure, temperature and the flow of LNG air outlet all can not satisfy target, at first further open water inlet control valve, improve the flow of cooling water intake; When the temperature of cooling water intake reaches the highest, it is maximum that flow reaches, and the temperature of cooling water outlet is when being lower than 10 ℃, and vaporizer inside is prone to icing phenomenon, and this time-control apparatus is opened tail gas air intake control valve.
Compared with prior art: effect of the present invention is embodied in:
The one, can there be simultaneously the heat exchange of multiply medium in the vaporizer of the present invention, heat exchange area per unit volume is present common heat exchanger several times.
The 2nd, the present invention takes full advantage of motor exhaust used heat, has greatly improved engine performance, effectively reduces and pollutes; After vaporizer in the certain situation of the circulating cooling water yield is introduced motor exhaust, because the motor exhaust temperature can reach 400 ℃-600 ℃, greatly increase the vaporizer exchange capability of heat, can reduce the vaporizer volume.
The 3rd, automatic control mode of the present invention and two kinds of working staties, the operating flexibility space of greatly having improved vaporizer has adapted to the requirement of the multiple working state of LNG fuel ship motor to fuel state.
The 4th, operation pressure of the present invention is high, but the thermal expansion automatic compensating of heat-transfer pipe without thermal stress issues, can prevent effectively that cooling water from freezing or the generation of surfusion.
The 5th, it is not affected by environment that the present invention operates use, and each parts selection range is wide, is easy to make, and cost of production is low.
Description of drawings
Fig. 1 is that LNG among the embodiment is around the pipe type evapourator structural representation.
Fig. 2 is that LNG among the embodiment is around the linkage structure schematic representation of 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 suction port pressure transducer 603-tail gas suction port flow transducer;
501-water intake temperature transducer 502-water intake pressure transducer 503-water intake flow transducer;
401-water outlet temperature transducer 402-water outlet pressure transducer 403-water outlet flow transducer.
Embodiment
By describing technology contents of the present invention, structure characteristics in detail, realized purpose and effect, below in conjunction with mode of execution and cooperate that accompanying drawing is detailed to give explanation.
A kind of LNG is around pipe type evapourator, comprise the housing 1 of a sealing and be arranged in the 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 around pipe 10 employing threaded pipes, described around the pipe 10 comprise the motor exhaust gas transmission around the pipe and the LNG gas transmission around pipe, described LNG gas transmission around pipe and motor exhaust gas transmission around mutual staggered being wrapped on the newel 2 side by side and layer by layer of pipe, same layer around between the pipe 10 and the employing positioning strip 3 between pipe 10 of adjacent layer fix its vertical and axial spacing.One side of described housing 1 also is provided with motor exhaust suction port 6 and LNG suction port 8, and the opposite side of described housing 1 also is provided with motor exhaust air outlet 7 and LNG air outlet 8; Be respectively arranged with water inlet control valve 11, tail gas air intake control valve 12 and LNG air intake control valve 13 on described cooling water intake 5, motor exhaust suction port 6 and the LNG suction port 8.Described motor exhaust gas transmission is connected between motor exhaust suction port 6 and the motor exhaust air outlet 7 around pipe, and described LNG gas transmission is connected between LNG suction port 8 and the 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 respectively the sensor on cooling water intake 5, motor exhaust suction port 6, LNG suction port 8, LNG air outlet 9 and the cooling water outlet 4, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit 14 is connected to respectively water inlet control valve, tail gas air intake control valve and LNG air intake control valve.
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 respectively the sensor on cooling water intake 5, motor exhaust suction port 6 and the LNG suction port 8, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit 14 is connected to respectively water inlet control valve 11, tail gas air intake control valve 12 and LNG air intake control valve 13.Also be provided with sensor on described LNG air outlet 9 and the cooling water outlet 4, described sensor comprises pressure transducer, flow transducer and temperature transducer; Described sensor all is connected to the signal input part of control circuit.
Specifically: be provided with LNG inlet temperature sensor 801, LNG inlet pressure sensor 802 and LNG inlet flow rate sensor 803 on the described LNG suction port 8; Be provided with LNG outlet temperature sensor 901, LNG outlet pressure sensor 902 and LNG outlet flow sensor 903 on the described LNG air outlet 9; Be provided with tail gas air inlet thermistor 601, tail gas suction port pressure transducer 602 and tail gas suction port flow transducer 603 on the described motor exhaust suction port 6; Be provided with water intake temperature transducer 501, water intake pressure transducer 502 and water intake flow transducer 503 on the described cooling water intake 5; Be provided with water outlet temperature transducer 401, water outlet pressure transducer 402 and water outlet flow transducer 403 on the described cooling water outlet 4.
A kind of LNG is around the control mode of pipe type evapourator, and this control mode is: when pressure, temperature and the flow of LNG air outlet all can not satisfy target, at first further open water inlet control valve, improve the flow of cooling water intake; When the temperature of cooling water intake reaches the highest, it is maximum that flow reaches, and the temperature of cooling water outlet is when being lower than 10 ℃, and vaporizer inside is prone to icing phenomenon, and this time-control apparatus is opened tail gas air intake control valve.
Motor exhaust and LNG tube side enter vaporizer side by side, and engine cooling water enters the vaporizer shell side, and fluid all adopts the mode of following current.Motor exhaust heats engine cooling water, and cooling water and LNG conduct heat, and make fuel reach corresponding technical requirements.
The vaporizer automatic controller can according to control cooling water, waste gas and LNG flow and pressure such as the demand of motor and LNG outlet temperatures, meet the demands outlet LNG fuel temperature, flow, pressure.
Two kinds of mode of operations of vaporizer: when cooling water is enough to satisfy LNG when vaporization, the automatic controller tail gas suction port valve that can kill engine; When fuel quantity deficiency or temperature were low, automatic controller control was opened or is increased motor exhaust suction port valve, increases the 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 further is heated, LNG enters vaporizer and the shell side engine cooling water carries out heat exchange from LNG suction port 8, meet the requirements of state, go out vaporizer by LNG air outlet 9 at last and enter motor, engine cooling water leaves vaporizer by 4 and enters cycle of engine.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (7)
1. a LNG is around pipe type evapourator, comprise the housing of a sealing and be arranged in the 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 the motor exhaust gas transmission around the pipe and the LNG gas transmission around pipe, described LNG gas transmission is wrapped on the newel around managing mutually to interlock side by side and layer by layer around pipe and motor exhaust gas transmission, one side of described housing also is provided with motor exhaust suction port and LNG suction port, and the opposite side of described housing also is provided with motor exhaust air outlet and LNG air outlet; Described motor exhaust gas transmission is connected between motor exhaust suction port and the motor exhaust air outlet around pipe, and described LNG gas transmission is connected between LNG suction port and the LNG air outlet around pipe.
2. LNG according to claim 1 is characterized in that around pipe type evapourator: same layer around between the pipe and the positioning strip that between pipe, adopts of adjacent layer fix its vertical and axial spacing.
3. LNG according to claim 1 is characterized in that around pipe type evapourator: be respectively arranged with water inlet control valve, tail gas air intake control valve and LNG air intake control valve on described cooling water intake, motor exhaust suction port and the LNG suction port.
According to claim 1 or 3 described LNG 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 respectively the sensor on cooling water intake, motor exhaust suction port, LNG suction port, LNG air outlet and the cooling water outlet, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit is connected to respectively water inlet control valve, tail gas air intake control valve and LNG air intake control valve.
5. a LNG is around the automatic controller of pipe type evapourator, it is characterized in that: comprise a control circuit, the signal input part of this control circuit is connected to respectively the sensor on cooling water intake, motor exhaust suction port and the LNG suction port, and described sensor includes pressure transducer, flow transducer and temperature transducer; The signal output part of described control circuit is connected to respectively water inlet control valve, tail gas air intake control valve and LNG air intake control valve.
6. LNG according to claim 5 is characterized in that around the automatic controller of pipe type evapourator: also be provided with sensor on described LNG air outlet and the cooling water outlet, described sensor comprises pressure transducer, flow transducer and temperature transducer; Described sensor all is connected to the signal input part of control circuit.
7. a LNG is characterized in that around the control mode of pipe type evapourator: when pressure, temperature and the flow of LNG air outlet all can not satisfy target, at first further open water inlet control valve, improve the flow of cooling water intake; When the temperature of cooling water intake reaches the highest, it is maximum that flow reaches, and the temperature of cooling water outlet is when being lower than 10 ℃, and vaporizer inside is prone to icing phenomenon, and this time-control apparatus is opened tail gas air intake control valve.
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 |
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| 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 |
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| CN102966468A true CN102966468A (en) | 2013-03-13 |
| CN102966468B CN102966468B (en) | 2015-06-03 |
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| CN201210467418.4A Active CN102966468B (en) | 2012-11-19 | 2012-11-19 | LNG (liquefied natural gas) coiled-tube-type carburetor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929580A (en) * | 2015-05-26 | 2015-09-23 | 中国石油集团渤海石油装备制造有限公司 | Well flushing and wax removal vehicle and wax removal method thereof |
| 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 |
| 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 |
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| 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 active Active
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| CA2523732A1 (en) * | 2005-11-10 | 2006-04-20 | Westport Research Inc. | System and method for delivering a pressurized gas from a cryogenic storage vessel |
| CN101382099A (en) * | 2007-09-05 | 2009-03-11 | 曼柴油机欧洲股份公司 | Gas supply device for an internal combustion engine driven by gaseous fuel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929580A (en) * | 2015-05-26 | 2015-09-23 | 中国石油集团渤海石油装备制造有限公司 | Well flushing and wax removal vehicle and wax removal method thereof |
| 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 |
| 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 |
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| CN102966468B (en) | 2015-06-03 |
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