CN102606880B - Urban emergency LNG (liquefied natural gas) supply system - Google Patents
Urban emergency LNG (liquefied natural gas) supply system Download PDFInfo
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- CN102606880B CN102606880B CN201210104467.1A CN201210104467A CN102606880B CN 102606880 B CN102606880 B CN 102606880B CN 201210104467 A CN201210104467 A CN 201210104467A CN 102606880 B CN102606880 B CN 102606880B
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Abstract
The invention discloses an urban emergency LNG (liquefied natural gas) supply system, which comprises an LNG steel cylinder, a gasifying device, a pressure regulating device, a metering device and an odorizing device which are sequentially communicated. The LNG steel cylinder comprises a bottom main liquid outlet and an auxiliary liquid outlet led out of a gas-phase space of the LNG steel cylinder, the pressure regulating device and the metering device refer to a pressure-regulating metering skid adopting three pipelines to regulate pressure, the main liquid outlet is connected with the gasifying device, the auxiliary liquid outlet is connected with the pressure-regulating metering skid through a gasifier, the rear end of the pressure-regulating metering skid is respectively connected with a plurality of gas supply outlets, and LNG liquid in the LNG steel cylinder is sequentially subjected to gasification, pressure regulation, metering and odorization so as to be outputted from the gas supply outlets. The urban emergency LNG (liquefied natural gas) supply system is free of a power source or other power sources, is conveniently movable at any time, emergency gas supply for specific users is guaranteed, and influence of gas supply stop accidents is reduced.
Description
Technical field
The present invention relates to LNG Liquefied natural gas (LNG:Liquefied Natural Gas) air feed field, relate in particular to a kind of urban gas supply system of in case of emergency air feed.
Background technique
Along with increasing rapidly of LNG supply channel and supply, for the construction at the cities and towns LNG station of the functions such as the conventional source of the gas of city pipeline gas, pipe natural gas transition source of the gas, city natural gas peak regulation and emergent source of the gas, LNG refueling, LNG transferring storage, LNG be filling, also obtained developing fast.Produced on this basis the blau gas gas supply conduit pattern that is similar to, in conjunction with the LNG station in cities and towns with the filling function of LNG, also there is community or industry and commerce user's LNG cylinder group vaporization station air feed in some cities.Gas storage, gasification and the air feed facility at above-mentioned these LNG stations are all fixed on the three unities, and fix to certain region air feed or provide peak regulation and emergent source of the gas, but can not be to the local emergent air feed of pipe network system.Along with city steam line is more and more, even some place occurs that pipeline is aging, pipe-line system stop the supple of gas or steam repairing situation can get more and more, stop the supple of gas or steam and can bring a lot of impacts to the air feed of resident living and some important communal facilitys, therefore provide a kind of urgency that is directed to carry out the emergent air supply system of air feed and just seem particularly necessary.
Summary of the invention
The object of the invention is to, a kind of emergent LNG urban gas supply system is provided, it,, without ABAP Adapter or other electrical source of power, can move easily at any time, guarantees some specific users' emergent air feed, reduces the impact of the accident of stopping the supple of gas or steam.
For achieving the above object, the invention provides a kind of emergent LNG urban gas supply system, comprising: the LNG steel cylinder, gasification installation, regulator, measuring apparatus and the device for adding odor that are connected successively; On described LNG steel cylinder, include and be located at the main liquid outlet of bottom and the attached liquid outlet of drawing from the gas-phase space of LNG steel cylinder, described regulator and measuring apparatus are the pressure regulation metering sled of an employing three-way connection (pipe) road pressure regulation; Described main liquid outlet is connected with gasification installation, and attached liquid outlet is connected with pressure regulation metering sled by a vaporizer, and this pressure regulation metering sled rear end is connected with respectively several air feed delivery outlets; LNG gas-liquid in described LNG steel cylinder, successively through gasification, pressure regulation, metering and add after smelly processing, is exported by air feed delivery outlet.
LNG steel cylinder in the present invention can be connected with gasification installation by a Stainless Steel Flexible Hose, and this Stainless Steel Flexible Hose one end is connected with LNG steel cylinder, and the other end is connected with gasification installation by steel flange interface.
Concrete, described gasification installation is an air-heating type gasifier, the vaporization ability of this air-heating type gasifier is 300m
3/ h.
In the present invention, described pressure regulation metering sled includes three road pressure-regulating pipes, in the pressure-regulating pipe of Gai Mei road, has included a filter and pressure governor.
Wherein, the differential pressure transmitter that includes several valves that are connected in series in described filter, be connected in parallel with these several valves and the electrical tracing terminal box being electrically connected with this differential pressure transmitter; In described pressure governor, include an electrical tracing terminal box, between this pressure governor and filter, be connected with a control valve that is provided with pressure display unit.
The two-way pressure-regulating pipe of described pressure regulation metering sled is connected with air feed delivery outlet, and another road pressure-regulating pipe is connected to do standby with a drain.
In the present invention, between described two-way pressure-regulating pipe and air feed delivery outlet, by electrical tracing terminal box, a flowmeter, several safety valve and device for adding odor, be connected respectively; Between another road pressure-regulating pipe and drain, by electrical tracing terminal box, pressure display unit and several safety valve, be connected.
Further, in described two-way pressure-regulating pipe, wherein the flowmeter rear end of a road pressure-regulating pipe is also connected with sensor group, in this sensor group, comprises pressure display unit, pressure transmitter, temperature transmitter and temperature indicator.
Air feed delivery outlet of the present invention comprises main air feed delivery outlet and personal gas delivery outlet, and the maximum air demand of this main air feed delivery outlet is 300Nm
3/ h, its outlet pressure is 0.35Mpa, outlet temperature is 0 ℃-35 ℃; Described personal gas delivery outlet front end is also provided with a pressure-regulating box.
Further, between described gasification installation and pressure regulation metering sled, be also provided with a water-bath type heater, vaporizer rear end is connected with this water-bath type heater; When ambient temperature is during lower than-5 ℃, LNG gas-liquid is by this water-bath type heater heating, then, successively through pressure regulation, metering and add after smelly processing, by air feed delivery outlet, exports.
The present invention's LNG urban gas supply system of meeting an urgent need, its compact structure is firm, do not need fixing occupation of land, and without ABAP Adapter or other power source, can move at any time easily, be exclusively used in the regional fields such as urban cells, school, hotel, hotel emergent air feed in case of emergency, reduce the impact of the accident of stopping the supple of gas or steam.
Accompanying drawing explanation
Fig. 1 is the modular structure schematic diagram of the emergent a kind of specific embodiment of LNG urban gas supply system of the present invention;
Fig. 2 is the linkage structure schematic diagram of pressure regulation metering sled in the present invention.
Embodiment
As shown in Figure 1, 2, the invention provides a kind of emergent LNG urban gas supply system, it comprises the LNG steel cylinder 10, gasification installation 20, regulator, measuring apparatus and the device for adding odor 30 that are connected successively; On described LNG steel cylinder 10, include and be located at the main liquid outlet 12 of bottom and the attached liquid outlet 14 of drawing from the gas-phase space of LNG steel cylinder 10, described regulator and measuring apparatus are the pressure regulation metering sled 40 of an employing three-way connection (pipe) road pressure regulation; Described main liquid outlet 12 is connected with gasification installation 20, and attached liquid outlet 14 is connected with pressure regulation metering sled 40 by a vaporizer 16, and this pressure regulation metering is prized 40 rear ends and is connected with respectively several air feed delivery outlets; LNG gas-liquid in described LNG steel cylinder 10, successively through gasification, pressure regulation, metering and add after smelly processing, is exported by air feed delivery outlet.The present invention makes full use of the gas-liquid two-phase of LNG, LNG liquid passes through main liquid outlet 12 fluids of LNG steel cylinder 10 bottoms, thereby enters gasification installation 20, passes through successively pressure regulation, metering and add smelly processing after gasification, then export air feed, this road air feed is main steam line of the present invention; LNG gas is drawn from the attached liquid outlet 14 of being located at LNG steel cylinder 10 tops, so that when the few pressure of LNG steel cylinder 10 liquid raises, directly take out the LNG gas of inner gasification, then after the further fully gasification of small-sized vaporizer 16, supply with output.
LNG steel cylinder 10 in the present invention can be connected with gasification installation 20 by a Stainless Steel Flexible Hose (not shown), this Stainless Steel Flexible Hose one end is connected with LNG steel cylinder 10, and the other end is connected with gasification installation 20 by steel flange interface (not shown).As a kind of specific embodiment of the present invention, the steel cylinder that this LNG steel cylinder 10 can employing standard is 410L, it is by the long LNG Stainless Steel Flexible Hose of a 2m, one end is connected with LNG steel cylinder 10, the other end is connected with gasification installation 20 by the steel flange interface of a latus rectum (DN:Diameter Nominal) 25mm, and wherein the design pressure of this Stainless Steel Flexible Hose is 1.4MP.During emergent LNG urban gas supply system Emergency use of the present invention, only need to be transported to scene with vehicle, after Stainless Steel Flexible Hose connects, can be come into operation, move and use all more for convenience.
In the specific embodiment of the invention, described gasification installation 20 is an air-heating type gasifier, and the vaporization ability of this air-heating type gasifier is 300m3/h.After the gasification of LNG gas-liquid, enter regulator, after pressure regulation, pressure is 2.5KPa-0.35Mpa, and gas supply capacity all meets 300m
3the traffic requirement of/h.
In the present invention, described pressure regulation metering sled 40 includes three road pressure-regulating pipes 41,42,43, has included a filter 44 and pressure governor 46 in Gai Mei road pressure-regulating pipe 41,42,43.Wherein, the differential pressure transmitter (PDT:Pressure Differential Transmitter) 444 that includes several valves that are connected in series 442 in filter 44, be connected in parallel with these several valves 442 and the electrical tracing terminal box 446 being electrically connected with this differential pressure transmitter 444; In described pressure governor 46, include an electrical tracing terminal box 462, between this pressure governor 46 and filter 44, be connected with a control valve 464 that is provided with pressure display unit (PI:Pressure Indicator).
Especially, in pressure regulation metering sled 40 of the present invention tri-road pressure-regulating pipes 41,42,43, two-way pressure-regulating pipe 41,42 is connected with air feed delivery outlet, and another road pressure-regulating pipe 43 is connected to do standby with a drain 48.Should can, when other road pressure-regulating pipe breaks down, by inner valve, switch to continue the work of pressure regulation metering as standby pressure-regulating pipe 43, and can not affect normal air feed.In the specific embodiment of the invention, between described two-way pressure-regulating pipe 41,42 and air feed delivery outlet, by electrical tracing terminal box 462, a flowmeter 466, several safety valve 468 and device for adding odor 30, be connected respectively; Between another road pressure-regulating pipe 43 and drain 48, by electrical tracing terminal box 462, pressure display unit 467 and several safety valve 468, be connected.Further, in described two-way pressure-regulating pipe 41,42, wherein flowmeter 466 rear ends of a road pressure-regulating pipe 41 are also connected with sensor group 49, comprise pressure display unit 467, pressure transmitter (PT:Pressure Transmitter) 492, temperature transmitter (TT:TemperatureTransmitter) 494 and temperature indicator (TI:Temperature Transmitter) 496 in this sensor group 49.
Further, several air feed delivery outlets of the present invention comprise main air feed delivery outlet 52 and personal gas delivery outlet 54, at these personal gas delivery outlet 54 front ends, are also provided with a pressure-regulating box 53.As a preferred embodiment of the present invention, the maximum air demand of described main air feed delivery outlet 52 is 300Nm
3/ h, its outlet pressure is 0.35Mpa, its outlet temperature is 0 ℃-35 ℃.
Further, the present invention has taken into full account the operating conditions under varying environment, if because weather reason (such as winter or northern area) ambient temperature itself is very low, even if LNG is through gasification, also the temperature (being not less than ambient temperature-5 ℃) that does not likely reach requirement, cannot enter pressure regulation metering sledge 40.Therefore, the present invention is also provided with a water-bath type heater 60 between described gasification installation 20 and pressure regulation metering sled 40, and vaporizer 16 rear ends are connected with this water-bath type heater 60.When ambient temperature is during lower than-5 ℃, LNG gas-liquid heats by this water-bath type heater 60, then, successively through pressure regulation, metering and add after smelly processing, by air feed delivery outlet, exports.
In sum, emergent LNG urban gas supply system of the present invention, the emergent air feed that it can guarantee resident, important commercial user and the small-sized commercial user of part, can reduce the impact of the accident of stopping the supple of gas or steam.In addition, its compact structure, firm, lifting or shovel that can safe ready be delivered on transport vehicle, and can be temporary fixed on transport vehicle reliably, to guarantee technical security.For shipment, consider, the size of this emergent LNG urban gas supply system can arrange by the size of the flat breast board lorry of 1.5t, and its general Extreme breadth is 1.7m, and extreme length is no more than 3m, and total height is no more than 2m.Regulator part can adopt and be arranged vertically, and to reduce the taking of plane, the import and export of gas, liquid are arranged in one end of whole system, can reduce the impact on road while using and also guarantee security of operation.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to technological scheme of the present invention and technical conceive, and all these changes and distortion all should belong to the protection domain of the accompanying claim of the present invention.
Claims (6)
1. an emergent LNG urban gas supply system, is characterized in that, comprises the LNG steel cylinder, gasification installation, regulator, measuring apparatus and the device for adding odor that are connected successively; On described LNG steel cylinder, include and be located at the main liquid outlet of bottom and the attached liquid outlet of drawing from the gas-phase space of LNG steel cylinder, described regulator and measuring apparatus are the pressure regulation metering sled of an employing three-way connection (pipe) road pressure regulation; Described main liquid outlet is connected with gasification installation, and attached liquid outlet is connected with pressure regulation metering sled by a vaporizer, and this pressure regulation metering sled rear end is connected with respectively several air feed delivery outlets; Described pressure regulation metering sled includes three road pressure-regulating pipes, in the pressure-regulating pipe of Gai Mei road, a filter and pressure governor have been included, the differential pressure transmitter that include several valves that are connected in series in filter, is connected in parallel with these several valves and the electrical tracing terminal box being electrically connected with this differential pressure transmitter; In described pressure governor, include an electrical tracing terminal box, between this pressure governor and filter, be connected with a control valve that is provided with pressure display unit, the two-way pressure-regulating pipe of described pressure regulation metering sled is connected with air feed delivery outlet, and another road pressure-regulating pipe is connected to do standby with a drain; Between described gasification installation and pressure regulation metering sled, be also provided with a water-bath type heater, vaporizer rear end is connected with this water-bath type heater; When ambient temperature is during lower than-5 ℃, the LNG gas-liquid in LNG steel cylinder is by this water-bath type heater heating, successively through gasification, pressure regulation, metering and add after smelly processing, by air feed delivery outlet, exports.
2. emergent LNG urban gas supply system as claimed in claim 1, it is characterized in that: described LNG steel cylinder is connected with gasification installation by a Stainless Steel Flexible Hose, this Stainless Steel Flexible Hose one end is connected with LNG steel cylinder, and the other end is connected with gasification installation by steel flange interface.
3. emergent LNG urban gas supply system as claimed in claim 1, is characterized in that: described gasification installation is an air-heating type gasifier, the vaporization ability of this air-heating type gasifier is 300m
3/ h.
4. emergent LNG urban gas supply system as claimed in claim 1, is characterized in that: between described two-way pressure-regulating pipe and air feed delivery outlet, be connected respectively by electrical tracing terminal box, a flowmeter, several safety valve and device for adding odor; Between another road pressure-regulating pipe and drain, by electrical tracing terminal box, pressure display unit and several safety valve, be connected.
5. emergent LNG urban gas supply system as claimed in claim 4, it is characterized in that: in described two-way pressure-regulating pipe, wherein the flowmeter rear end of a road pressure-regulating pipe is also connected with sensor group, in this sensor group, comprises pressure display unit, pressure transmitter, temperature transmitter and temperature indicator.
6. emergent LNG urban gas supply system as claimed in claim 1, is characterized in that: described air feed delivery outlet comprises main air feed delivery outlet and personal gas delivery outlet, and the maximum air demand of this main air feed delivery outlet is 300Nm
3/ h, its outlet pressure is 0.35Mpa, outlet temperature is 0 ℃-35 ℃; Described personal gas delivery outlet front end is also provided with a pressure-regulating box.
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| CN201210104467.1A CN102606880B (en) | 2012-04-11 | 2012-04-11 | Urban emergency LNG (liquefied natural gas) supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210104467.1A CN102606880B (en) | 2012-04-11 | 2012-04-11 | Urban emergency LNG (liquefied natural gas) supply system |
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| CN102606880B true CN102606880B (en) | 2014-04-23 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712904B (en) * | 2015-03-13 | 2016-12-07 | 青岛新奥燃气设施开发有限公司 | LNG meets an urgent need feeder |
| CN106764413A (en) * | 2017-01-20 | 2017-05-31 | 佛山市汽车燃气有限公司 | A kind of gas station of the emergent gasification function of band |
| CN106989272A (en) * | 2017-04-21 | 2017-07-28 | 江西制氧机有限公司 | A kind of vacuum insulation vessel saves loop structure |
| CN109708001B (en) * | 2019-01-15 | 2023-12-05 | 上海飞奥燃气设备有限公司 | Safe and reliable fuel gas sled of low energy consumption |
| CN112145965A (en) * | 2020-07-30 | 2020-12-29 | 北京市煤气热力工程设计院有限公司 | Vehicle-mounted gas emergency device and gas emergency vehicle |
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| CN2844640Y (en) * | 2005-09-07 | 2006-12-06 | 常州信力燃气设备有限公司 | Storage tank prized LNG gas-supply terminal |
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Address after: 401329 Chongqing Jiulongpo Baishiyi town Hailong Village 8 Applicant after: Chongqing Juchuang Metering Equipment Co.,Ltd. Address before: 401120, No. 9, Yubei District Airport Industrial Park, Chongqing Applicant before: Chongqing Juchuang Metering Equipment Co.,Ltd. |
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