CN103899913B - A kind of portable LNG feeder utilizing remaining used heat - Google Patents
A kind of portable LNG feeder utilizing remaining used heat Download PDFInfo
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- CN103899913B CN103899913B CN201410110476.0A CN201410110476A CN103899913B CN 103899913 B CN103899913 B CN 103899913B CN 201410110476 A CN201410110476 A CN 201410110476A CN 103899913 B CN103899913 B CN 103899913B
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Abstract
A kind of portable LNG feeder utilizing remaining used heat of disclosure, including LNG storage facilities and vehicle-mounted gasification pressure regulation container two parts；It is installed on heat accumulating type gasification device in described vehicle-mounted gasification pressure regulation container；Described heat accumulating type gasification device is internally provided with the first heat exchanger tube and the second heat exchanger tube, and the import and export of described first heat exchanger tube and the second heat exchanger tube are installed on same tube sheet, and two ends end socket is divided into two Room by dividing plate；Described LNG storage facilities is connected with heat accumulating type gasification device by pipeline。Without external power supply or other power sources when the present invention supplies, by the remaining used heat gasification LNG that heat accumulating type gasification device reclaims, amount of vaporization is protected from environmental minimum, equipment air demand is big and gasification rate is fast, the electrical control cubicles simultaneously arranged and safety device ensure that the security reliability of supply, have compact conformation, conveniently moving, energy-conserving and environment-protective, toggle speed is fast, gas supply capacity is strong, environmental suitability is strong, security reliability is high feature。
Description
Technical field
The present invention relates to liquefied natural gas supplying field, be specifically related to a kind of portable LNG feeder utilizing remaining used heat。
Background technology
Under the overall background of energy-saving and emission-reduction, natural gas is about to become the leading source of the gas of China's gas。Along with popularizing of city gas supply, how to ensure that user is in maintenance transformation process and with the continuous-stable gas at upward adverse flow of QI peak, becomes the major issue that gas company faces。Disclosed in patent of invention CN102606880A and utility model patent CN201057357Y and CN201310744Y, technical scheme can alleviate this problem to a certain extent, but technique scheme is all short of to some extent on security of supply gas, and the shortcoming such as its gasifier adopted exists that gasification rate is slow, floor space is big and environmental suitability is poor, cannot realize long-time stable supply, more can not when pipe network overhaul on a large scale or pipe network for a long time for QI-insufficiency。
Summary of the invention
The purpose of the present invention is that the deficiency solving exist in technique scheme, and provides a kind of portable LNG feeder utilizing remaining used heat。
Technical scheme is as described below:
A kind of portable LNG feeder utilizing remaining used heat, including LNG storage facilities and vehicle-mounted gasification pressure regulation container two parts；Described LNG storage facilities is the conventional equipments such as LNG tank car, tank container。The safety devices such as heat accumulating type gasification device, electrical control cubicles, filter, pressure regulator, effusion meter, THT odorization machine, the first temperature sensor, the second temperature sensor, the first pressure transducer, the second pressure transducer and anti-liquid device, flammable gas alarm, alarm probe, portable dry powder fire extinguisher, stop valve, emergency cut-off magnetic valve, limiting pressure closing valve and Safety relief valve excessively it are installed in vehicle-mounted gasification pressure regulation container；Described LNG storage facilities is connected with heat accumulating type gasification device by pipeline；Described heat accumulating type gasification device is internally provided with the first heat exchanger tube for heat-obtaining and the second heat exchanger tube for the LNG that gasifies, and the import and export of described first heat exchanger tube and the second heat exchanger tube are installed on same tube sheet；The end socket at heat accumulating type gasification device two ends is divided into two Room by dividing plate, respectively as the import and export of the import and export of heat donor fluid and LNG；Described heat exchanger tube is configured on tube bundle support dividing plate, is filled with phase-change material and is immersed in heat-conducting medium around heat exchanger tube；Described heat exchanger tube includes the first heat exchanger tube and the second heat exchanger tube；The outer wall of heat accumulating type gasification device is provided with one layer of heat preservation material and for measuring the thermometer of phase-change material temperature。
In the said equipment, described LNG storage facilities is by pipeline and LNG inlet flange, stop valve, emergency cut-off magnetic valve and heat accumulating type gasification device liquid phase entrance are sequentially connected, described heat accumulating type gasification device gaseous phase outlet crosses liquid device by pipeline with anti-, filter, limiting pressure closing valve, pressure regulator, Safety relief valve, effusion meter, THT odorization machine, stop valve and gas outlet flange are sequentially connected, heat accumulating type gasification device gaseous phase outlet and anti-cross between liquid device connect pipeline be also disposed with the first temperature sensor and the first pressure transducer measuring temperature and pressure after gasifier, connecting between THT odorization machine and stop valve is also disposed with the second temperature sensor measuring departures gas temperature and pressure and the second pressure transducer on pipeline。
Further, all devices of the present invention all adopts the anti-corrosion material such as rustless steel or alloy to manufacture。
Further, described vehicle-mounted gasification pressure regulation container pipeline is provided with the LNG inlet flange and gas outlet flange that are positioned at different azimuth, it is simple to be connected with LNG storage facilities and gas ductwork by stainless steel flexible hose in different locations。
Further, vehicular power-bottle is carried in described electrical control cubicles, take into account alarm probe by electric wire with sensor, flow to be connected, receive temperature, pressure after incoming gasifier, departures gas temperature pressure flow and leakage alarm signal, export control signal by circuit to flammable gas alarm and emergency cut-off magnetic valve and realize leakage sound and light alarm and accident emergency cut-off。
Further, described pressure regulator is axial flow pressure regulator or Self operated Regulator, and scope is adjustable。
Further, described filter is cartridge type filter or y-type filter。
Further, described flow is calculated as with the turbine flowmeter of Temperature and Pressure Correction, Roots type flowmeter or ultrasonic flowmeter, and its signal is sent to electrical control cubicles。
Further, described THT odorization machine is manual odorization machine or automatic odorization machine。
Further, described heat exchanger tube is U-shaped, S type or spiral, and its surfaces externally and internally is shiny surface or fin surface。
Further, described phase-change material is that one or more energy storage densities are big, heat conductivity is high, corrosivity is less, less costly, the inorganic phase-changing material of stable performance, organic phase change material or composite phase-change material, its phase transition temperature is between 45 ~ 350 DEG C, and more than described utilization, the operation principle of the portable LNG feeder of used heat and process are as follows:
(1) heat-accumulating process: (this segment fluid flow mostlys come from the temporary transient no heat such as industrial waste heat, waste heat by heat donor fluid, and the temperature of this fluid is higher than the phase transition temperature of heat accumulating phase change material) by the first heat exchanger tube, exchange with the heat-conducting medium of surrounding and phase-change material generation heat, phase-change material absorbs heat and constantly heats up, undergo phase transition when reaching uniform temperature, thus by energy storage。
(2) supply process: LNG storage facilities is transported to supply scene with vehicle-mounted gasification pressure regulation container through urban road, LNG enter from LNG storage facilities by the road the heat absorbing its storage after heat accumulating type gasification device heat up gasification, sequentially pass through pressure regulation again, measure and add smelly process after, export gas ductwork by gaseous phase outlet。
There is advantages that
Without external power supply or other power sources during this device supply, by the remaining used heat gasification LNG that heat accumulating type gasification device reclaims, amount of vaporization is protected from environmental minimum, equipment air demand is big and gasification rate is fast, the electrical control cubicles simultaneously arranged and safety device ensure that the security reliability of supply, there is compact conformation, conveniently moving, energy-conserving and environment-protective, toggle speed is fast, gas supply capacity is strong, environmental suitability is strong, the feature that security reliability is high, can be applicable to the emergent supply of some areas pipe network and mobile operational process unit, source of the gas supplements peak regulation, local pipe networks ftercompction and individual cell user normally supply, the early stage supply service of new user。
Accompanying drawing explanation
Fig. 1 is the portable LNG feeder structural representation utilizing remaining used heat of the present invention；
Fig. 2 is heat accumulating type gasification device structural representation。
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described。
Embodiment:
It is illustrated in figure 1 the present invention and the portable LNG feeder structural representation utilizing remaining used heat is provided, shown in figure it is: LNG storage facilities 1, vehicle-mounted gasification pressure regulation container 2, LNG inlet flange 201, gas outlet flange 202, liquid phase inlet flange 203, gaseous phase outlet flange 204, heat donor fluid inlet flange 205, heat donor fluid outlet(discharge) flange 206, stop valve (21, 21 ', 217, 217 '), emergency cut-off magnetic valve 22, heat accumulating type gasification device 23, electrical control cubicles 24, portable dry powder fire extinguisher 25, first temperature sensor 26, first pressure transducer 27, anti-liquid device 28 excessively, filter 29, limiting pressure closing valve 210, pressure regulator 211, Safety relief valve 212, effusion meter 213, THT odorization machine 214, second temperature sensor 215, second pressure transducer 216, flammable gas alarm 218, alarm probe 219, alarm probe 219 ', pipeline 3。
Fig. 2 is heat accumulating type gasification device structural representation；Shown in figure it is: heat accumulating type gasification device 23, the first heat exchanger tube 231, phase-change material 232, heat-conducting medium 233, the second heat exchanger tube 234, insulation material 235 and thermometer 236, tube bundle support dividing plate 237, dividing plate 238。
As a preferred embodiment of the present invention, all devices all adopts rustless steel to manufacture, LNG storage facilities 1 is connected with the LNG inlet flange 201 arranged on vehicle-mounted gasification pressure regulation container 2 pipeline by the stainless steel flexible hose 3 of a 2m length, LNG inlet flange is by pipeline and stop valve (21 or 21 '), the liquid phase inlet flange 203 of emergency cut-off magnetic valve 22 and heat accumulating type gasification device 23 is sequentially connected, heat accumulating type gasification device be internally provided with the first heat exchanger tube 231 for heat-obtaining and the second heat exchanger tube 234 for the LNG that gasifies, the import and export of heat exchanger tube are installed on same tube sheet, two ends end socket is divided into two Room by dividing plate 238 and is provided for thermal fluid inlet flange 205, heat donor fluid outlet(discharge) flange 206, liquid phase inlet flange 203 and gaseous phase outlet flange 204, import and export respectively as the import and export of heat donor fluid and LNG, heat exchanger tube is configured with tube bundle support dividing plate 237, around it is filled with phase-change material 232 and is immersed in heat-conducting medium 233, the outer wall of heat accumulating type gasification device 23 is provided with one layer of heat preservation material 235 and for measuring the thermometer 236 of phase-change material temperature, the gaseous phase outlet flange of heat accumulating type gasification device 23 crosses liquid device 28 by pipeline with anti-, filter 29, limiting pressure closing valve 210, pressure regulator 211, Safety relief valve 212, effusion meter 213, THT odorization machine 214, stop valve (217 or 217 ') and gas outlet flange 202 are sequentially connected, heat accumulating type gasification device gaseous phase outlet and anti-cross between liquid device connect pipeline is also disposed with and measure the first temperature sensor 26 and the first pressure transducer 27 of temperature and pressure after gasifier, connecting between THT odorization machine and stop valve is also disposed with the second temperature sensor 215 and the second pressure transducer 216 measuring departures gas temperature and pressure on pipeline, vehicle-mounted gasification pressure regulation container is further equipped with electrical control cubicles 24 and portable dry powder fire extinguisher 25, electrical control cubicles passes through electric wire and sensor, flow takes into account alarm probe 219, 219 ' are connected, receive incoming temperature, pressure, flow and leakage alarm signal, export control signal by circuit to flammable gas alarm 218 and emergency cut-off magnetic valve 22 and realize leakage sound and light alarm and accident emergency cut-off。
Further, described LNG storage facilities 1 adopts dischargeable capacity to be 40m3(gaseous volume is about 24000Nm3) tank container, described LNG inlet flange 201, the latus rectum of liquid phase inlet flange 203 are 25mm, and the latus rectum of described gaseous phase outlet flange 204 and gas outlet flange 202 is 100mm, and the vaporization ability of described heat accumulating type gasification device 23 is 1000Nm3/ h, its heat exchange tube structure adopts U-shaped, surfaces externally and internally is fin surface, around it is filled with rare-earth phase change heat storage material 40 tons, its phase transition temperature is 75 DEG C ~ 90 DEG C, and latent heat of phase change is 210 ~ 315KJ/kg, and heat-conducting medium adopts conduction oil, the overall dimensions of gasifier is 5500 × 2100 × 1600mm, and floor space reduces about 30% than air-heating type gasifier。
Further, LNG flows successively through anti-liquid device excessively after gasification, y-type filter enters axial flow pressure regulator 211, and after pressure regulation, pressure is 2.5KPa ~ 0.35MPa, and gas supply capacity is satisfied by 1000Nm3The traffic requirement of/h, measures then through the Roots type flowmeter with Temperature and Pressure Correction, and automatic odorization machine adds smelly rear by the gas outlet Flange joint of latus rectum 100mm to gas ductwork。
As a kind of specific embodiment of the present invention, applying the portable LNG feeder of used heat more than described utilization and reclaim the used heat of a thermal power plant boiler smoke discharging fecder system network carries out emergent supply, maximum air demand is 1000Nm3/ h, outlet pressure is 0.35MPa, and outlet temperature is 0 ~ 35 DEG C, it may be achieved within 24 hours, supply continuously。
Utilizing the portable LNG feeder of remaining used heat, its work process is as follows:
(1) heat-accumulating process: the high-temperature flue gas that temperature is 220 ~ 250 DEG C is passed into the first heat exchanger tube, exchange with conduction oil and phase-change material generation heat, phase-change material constantly heats up because of heat absorption, before not up to phase transition temperature, phase-change material storage sensible heat, storage latent heat can be undergone phase transition gradually after obtaining enough heats, when phase transformation terminates and reaches design temperature 100 DEG C, heat-accumulating process completes, amount of stored heat is that sensible heat (60 ~ 100 DEG C) adds latent heat, and the accumulation of heat of 40 tons of heat-storing materials stores total amount of heat and is about 3,620,000 kilocalories。
(2) supply process: LNG storage facilities is transported to supply scene with vehicle-mounted gasification pressure regulation container through urban road, after connecting pipeline, the LNG of-160 DEG C enters heat accumulating type gasification device from LNG storage facilities by the road。At the supply initial stage, LNG absorbs rapidly the sensible heat intensification gasification of phase-change material storage；Along with service life is elongated, there is lattice variations and discharge the latent heat deposited in phase-change material gradually；Finally, the decline of its temperature reaches the temperature (50 ~ 60 DEG C) of regulation and discharges residue sensible heat, and heat release terminates。In the process, LNG gasifies rapidly, and the natural gas after gasification exports gas ductwork by gaseous phase outlet after sequentially passing through pressure regulation again, measure and adding smelly process。
It is to be understood that; it is illustrative and not restrictive by optimal enforcement example to the detailed description that technical scheme carries out above; it cannot be assumed that the specific embodiment of the present invention is only limitted to this; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; technical scheme described in each embodiment is modified; or wherein portion of techniques feature is carried out equivalent replacement, all should be considered as belonging to the scope of patent protection that claims of present invention submission are determined。
Claims (7)
1. the portable LNG feeder utilizing remaining used heat, it is characterised in that include LNG storage facilities (1) and vehicle-mounted gasification pressure regulation container (2) two parts；It is installed on heat accumulating type gasification device (23) in described vehicle-mounted gasification pressure regulation container (2)；Described heat accumulating type gasification device (23) is internally provided with the first heat exchanger tube (231) for heat-obtaining and the second heat exchanger tube (234) for the LNG that gasifies, and the import and export of described first heat exchanger tube (231) and the second heat exchanger tube (234) are installed on same tube sheet；The end socket at heat accumulating type gasification device (23) two ends is divided into two Room by dividing plate, respectively as the import and export of the import and export of heat donor fluid and LNG；Described heat exchanger tube is configured on tube bundle support dividing plate (237), is filled with phase-change material (232) and is immersed in heat-conducting medium (233) around heat exchanger tube；Described heat exchanger tube includes the first heat exchanger tube (231) and the second heat exchanger tube (234)；Described LNG storage facilities (1) is connected with heat accumulating type gasification device (23) by pipeline (3)；Described LNG storage facilities (1) is LNG tank car or tank container；Described vehicle-mounted gasification pressure regulation container (2) also includes electrical control cubicles (24), filter (29), pressure regulator (211), effusion meter (213), THT odorization machine (214), the first temperature sensor (26), the second temperature sensor (215), the first pressure transducer (27), the second pressure transducer (216) and safety device；Described safety device includes anti-liquid device (28), flammable gas alarm (218), alarm probe (219,219 '), portable dry powder fire extinguisher (25), stop valve (21,21 ', 217,217 '), emergency cut-off magnetic valve (22), limiting pressure closing valve (210) and Safety relief valve (212) excessively；Described LNG storage facilities (1) is by pipeline and LNG inlet flange, stop valve (21, 21 '), emergency cut-off magnetic valve (22) and heat accumulating type gasification device liquid phase entrance are sequentially connected, described heat accumulating type gasification device gaseous phase outlet crosses liquid device (28) by pipeline with anti-, filter (29), limiting pressure closing valve (210), pressure regulator (211), Safety relief valve (212), effusion meter (213), THT odorization machine (214), stop valve (217, 217 ') it is sequentially connected with gas outlet flange, heat accumulating type gasification device gaseous phase outlet and anti-cross between liquid device connect pipeline be also disposed with the first temperature sensor (26) and the first pressure transducer (27) measuring temperature and pressure after gasifier, connecting between THT odorization machine and stop valve is also disposed with the second temperature sensor (215) measuring departures gas temperature and pressure and the second pressure transducer (216) on pipeline；Described heat accumulating type gasification device (23) outer wall is provided with one layer of heat preservation material (235) and for measuring the thermometer (236) of phase-change material temperature。
2. the portable LNG feeder of used heat more than utilization according to claim 1, it is characterised in that be provided with, on described vehicle-mounted gasification pressure regulation container (2) pipeline, the LNG inlet flange and gas outlet flange that are positioned at different azimuth。
3. the portable LNG feeder of used heat more than utilization according to claim 1, it is characterized in that, described electrical control cubicles carries vehicular power-bottle in (24), it is connected with sensor (26,27,215,216), effusion meter (213) and alarm probe (219,219 ') by electric wire, receive temperature, pressure after incoming gasifier, departures gas temperature pressure flow and leakage alarm signal, export control signal by circuit to flammable gas alarm (218) and emergency cut-off magnetic valve (22) and realize leakage sound and light alarm and accident emergency cut-off。
4. the portable LNG feeder of used heat more than utilization according to claim 1, it is characterised in that described pressure regulator (211) is axial flow pressure regulator or Self operated Regulator, and scope is adjustable；Described filter (29) is cartridge type filter or y-type filter。
5. the portable LNG feeder of used heat more than utilization according to claim 1, it is characterized in that, described effusion meter (213) is for the turbine flowmeter of Temperature and Pressure Correction, Roots type flowmeter or ultrasonic flowmeter, and its signal is sent to electrical control cubicles (24)；Described THT odorization machine (214) is manual odorization machine or automatic odorization machine。
6. the portable LNG feeder of used heat more than utilization according to claim 1, it is characterised in that described phase-change material (232) is inorganic phase-changing material, organic phase change material or composite phase-change material, and its phase transition temperature is between 45 ~ 350 DEG C。
7. the portable LNG feeder of used heat more than utilization according to claim 1, it is characterised in that described first heat exchanger tube and the second heat exchanger tube is U-shaped, S type or spiral, its surfaces externally and internally is shiny surface or fin surface。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410110476.0A CN103899913B (en) | 2014-03-24 | 2014-03-24 | A kind of portable LNG feeder utilizing remaining used heat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410110476.0A CN103899913B (en) | 2014-03-24 | 2014-03-24 | A kind of portable LNG feeder utilizing remaining used heat |
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| CN103899913B true CN103899913B (en) | 2016-06-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806829A (en) * | 2015-04-09 | 2015-07-29 | 刘伟忠 | Pipeline leakage preventing device |
| CN112066247B (en) * | 2020-09-25 | 2022-07-19 | 呼和浩特中燃城市燃气发展有限公司 | Emergency air supply vehicle |
| CN113970065B (en) * | 2021-11-09 | 2022-11-29 | 新地能源工程技术有限公司 | LNG emergency gasification device and method with adjustable heat value |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3400545A (en) * | 1965-05-31 | 1968-09-10 | Shell Oil Co | Use of cold-carriers in liquefaction and regasification of gases |
| JP3946398B2 (en) * | 2000-01-18 | 2007-07-18 | 株式会社神戸製鋼所 | Intermediate medium type vaporizer and method of supplying natural gas using the vaporizer |
| CN1214209C (en) * | 2002-12-20 | 2005-08-10 | 中国科学院理化技术研究所 | Heats torage of gasifier liquefied natural gas |
| CN1223786C (en) * | 2002-12-20 | 2005-10-19 | 中国科学院理化技术研究所 | Gasifier of low-temperature liquid |
| CN201373238Y (en) * | 2009-03-20 | 2009-12-30 | 杭州赛富特设备有限公司 | Carbon dioxide vaporizer |
| CN203363660U (en) * | 2013-05-13 | 2013-12-25 | 中集车辆（山东）有限公司 | Energy storage type liquefied natural gas vaporizer |
| CN203823429U (en) * | 2014-03-24 | 2014-09-10 | 华南理工大学 | Mobile LNG (Liquefied Natural Gas) supply device utilizing residual heat and waste heat |
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