CN205206995U - Marine LNG supply of fuel system of no storage tank pressure boost unit - Google Patents
Marine LNG supply of fuel system of no storage tank pressure boost unit Download PDFInfo
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- CN205206995U CN205206995U CN201520776104.1U CN201520776104U CN205206995U CN 205206995 U CN205206995 U CN 205206995U CN 201520776104 U CN201520776104 U CN 201520776104U CN 205206995 U CN205206995 U CN 205206995U
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- storage tank
- heating unit
- fuel
- natural gas
- gas
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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
Abstract
The utility model provides a marine LNG supply of fuel system of no storage tank pressure boost unit relates to boats and ships fuel supply technical field, include: a natural gas storage tank for saving natural gas fuel has liquid outlet and a return -air mouth, the vaporization heating unit, with the liquid outlet with return -air oral siphon way intercommunication for return after vaporizing to some LNG fuel the return -air mouth carries out the pressure boost to natural gas storage tank, natural gas output through the gas vent of self will partially be vaporized after heating supplies the engine use, a plurality of control valves are installed the pipeline of natural gas storage tank with on each pipeline of vaporization heating unit. The problem of adopt prior art fuel gas supply system constitute comparatively complicated, annex, more, the complicated technique of equipment is solved.
Description
Technical field
The utility model relates to marine fuel supply technical field, particularly relates to a kind of gas fuel supply system peculiar to vessel without storage tank compress cell.
Background technique
At present, global employing LNG Liquefied natural gas LNG (liquefiednaturalgas) is increasing gradually as the powered ship quantity of fuel, since newly-built rock gas powered ship subsidy way is carried out by Ministry of Communications of China, apply for that the newly-built LNG powered ship of subsidizing reaches 600.Along with the development of LNG powered ship, corresponding corollary equipment is also in fast development, and gas fuel supply system is the core system of LNG powered ship.Natural gas supply Operation system setting two on general boats and ships overlaps, and some boats and ships is arranged two storage tanks and two cover air supply systems, and some boats and ships arrange a storage tank and two cover air supply systems.
But the domestic manufacturer of doing the design of gas fuel air supply system is at present less, and most gas fuel air supply system composition is comparatively complicated, annex, equipment are more, general a set of air supply system all comprises a vaporizer, a heater and a liquid tank from compress cell (pressurebuildupunit), is called for short PBU.Based on current small-sized LNG powered ship fuel system complex structure, valve piping is more, and when motor air feed changes in demand, system can not be reacted in time, there is the features such as the danger that in pipeline, pressure can raise.
Model utility content
Technical problem to be solved in the utility model adopts the fuel air supply system composition of prior art comparatively complicated, and annex, equipment are more, more complicated.
In order to solve the problem, embodiment of the present utility model discloses a kind of LNG fuel system peculiar to vessel without storage tank compress cell, comprising: for storing the natural gas storage tank with liquid outlet and gas returning port of gas fuel;
Vaporization heating unit, with described liquid outlet and described gas returning port pipeline connection, returning described gas returning port for carrying out vaporization to part LNG fuel, carrying out supercharging to storage tank; Exported, for motor by the rock gas after components vaporize heats by the relief opening of self;
Multiple control valve, is arranged on the pipeline of described natural gas storage tank and each pipeline of vaporization heating unit.
Further, also comprise: on the output pipe of described vaporization heating unit, the gas-liquid separator for eliminating liquid fuel in pipeline is installed.
Further, the control valve between described vaporization heating unit and described liquid outlet comprises: liquid phase root valve and liquid phase remote-controlled valve.
Further, the control valve between described vaporization heating unit and described gas returning port comprises: supercharging return-air remote-controlled valve and supercharging return-air valve.
Further, described gas-liquid separator is also connected with air feed remote-controlled valve by pipeline.
Further, described vaporization heating unit comprises multiple, described natural gas storage tank comprises the corresponding multiple described liquid outlet that connects of multiple and described vaporization heating unit and multiple described gas returning port;
Between output pipe outside the air feed remote-controlled valve of multiple described vaporization heating unit, be connected with switching valve.
Further, described vaporization heating unit has a liquid phase liquid entering hole, two gas phase air outlets.
Compared with prior art, the utility model comprises following advantage:
In the art of this patent scheme, system is optimized, in system, often cover vaporization heating unit not only can meet the gas supply demand of motor, and the boost demand of storage tank can be met, and without the need to PBU and heater, make the pressure of storage tank in system remain at working pressure conditions, without the need to manual tune, structure is simple, arrangement convenience, is easy to operation, is convenient to safeguard.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 of the present utility model;
Fig. 2 is the structural representation of embodiment 2 of the present utility model.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in further detail below in conjunction with drawings and Examples.
The utility model discloses a kind of LNG fuel system peculiar to vessel without storage tank compress cell.
With reference to Fig. 1, for the structural representation of embodiment 1 of the present utility model, described system comprises: for storing the natural gas storage tank 101 of gas fuel, and natural gas storage tank 101 has one for being used for liquified natural gas fuel area density to the vaporization liquid outlet 103 of heating unit 104 and one to receive the gas returning port 102 of the gaseous natural gas fuel of backflow from vaporization heating unit 104.
Native system realizes controlling the gas fuel after the heat vaporized and control section vaporization of gas fuel by multiple control valve be arranged on the pipeline of described natural gas storage tank 101 and the output pipe of described vaporization heating unit 104 and is back in natural gas storage tank 101 air pressure balance regulated in natural gas storage tank 101 and each transfer conduit.
Described control valve comprises: liquid phase root valve 106, liquid phase remote-controlled valve 105, supercharging return-air valve 108, supercharging return-air remote-controlled valve 107, air feed remote-controlled valve 111.
Pipeline between described vaporization heating unit 104 and described liquid outlet 103 is connected with liquid phase root valve 106 and liquid phase remote-controlled valve 105.
Pipeline between described vaporization heating unit 104 and described gas returning port 102 is connected with supercharging return-air remote-controlled valve 107 and supercharging return-air valve 108.
Described vaporization heating unit 104 realizes after existing water bath type vaporizer can be adopted to transform, concrete finger: increase a branch road and be used for being connected with natural gas storage tank 101 in original vaporization pipeline, carrying out regulating and controlling pressure by being led back in natural gas storage tank 101 by part gaseous natural gas fuel, is natural gas storage tank 101 supercharging.
In preferred embodiment 1, the heat exchanging tube of described vaporization heating unit 104 adopts coil structure, reduces the structural stress that heat exchanging tube produces because of temperature variation.Adopt one or more heat exchanging tube coileds, layering is enumerated, and integral arrangement is in a urceolus.Compare other type heat exchangers, reduce joint quantity, the possibility of gas leakage is down to minimum.
In use, when the motor 112 that described system connects is in firm power running, supercharging and the air feed of system are in stability.When motor 112 power reduces suddenly, when required Natural Gas reduces, gaseous natural gas fuel after LNG vaporization is more, pressure in each pipeline can raise, gaseous natural gas fuel is got back in natural gas storage tank 101 by return line under the effect of the pressure, liquified natural gas flow in fuel in natural gas storage tank 101 is to the amount also corresponding minimizing of vaporization heating unit 104, be unlikely to make pipeline inner pressure too high, through adjustment after a while, pressure in pipeline will reach new state of equilibrium, the safety of abundant safeguards system.
If air feed demand continues lower, user also can reduce by regulating and controlling liquid phase remote-controlled valve 105 boil-off rate that the flow of liquified natural gas fuel entering vaporization heating unit 104 reduces gas fuel.
When air feed demand continues lower, user can also increase the pressure of vaporizing in heating unit 104 and pipeline by regulating supercharging return-air remote-controlled valve 107, makes the gas fuel of gaseous state more be back to gas returning port 102 along pipeline and is back in natural gas storage tank.
By the application of technique scheme, make to be optimized air supply system, vaporization heating unit in system not only can meet the gas supply demand of motor, and can meet the boost demand of storage tank, and without the need to PBU and heater, the pressure of storage tank in system is made to remain at working pressure conditions, without the need to manual tune, structure is simple, arrangement convenience, be easy to operation, be convenient to safeguard.Can also be realized for the Stress control in the control of air demand and storage tank by manual tune simultaneously.
Meanwhile, described system also comprises: on the output pipe of described vaporization heating unit 104, is provided with for eliminating liquified natural gas fuel in output pipe, and plays the gas-liquid separator 110 of pressure stabilization function.Liquified natural gas fuel remaining in the flow in fuel after vaporization heating unit 104 processes can be filtered out by this gas-liquid separator, improve to the gaseous state purity of motor supply fuel.
Also air feed remote-controlled valve 111 is connected with by pipeline between the motor 112 that described gas-liquid separator 110 is connected with described system.The amount of gaseous natural gas fuel can be supplied to motor 112 by regulable control by described air feed remote-controlled valve 111.Gas-liquid separator 110 has the pressure stabilization function realizing gas liquid separating function, motor air feed, and prevents conduit failure heat medium from flowing into the function of motor.
In preferred embodiment 1, described vaporization heating unit has a liquid phase liquid entering hole, two gas phase air outlets.
With reference to Fig. 2, for the structural representation of the embodiment 2 of the utility model patent, design a natural gas storage tank 201 and join two cover air supply systems, without the need to arranging storage tank compress cell in addition, be connected with the gas fuel output pipe that two-way is identical, be respectively two cover air supply systems and gas fuel is provided.Described vaporization heating unit 204 comprises multiple, described natural gas storage tank 201 comprises the corresponding multiple liquid outlets 203 that connect of multiple and described vaporization heating unit 204 and multiple gas returning port 202.
For often overlapping air supply system, its structure is close with the structure described in embodiment 1, for storing the natural gas storage tank 201 of gas fuel, natural gas storage tank 201 has one for being used for liquified natural gas fuel area density to the vaporization liquid outlet 203 of heating unit 204 and one to receive the gas returning port 202 of the gaseous natural gas fuel of backflow from vaporization heating unit 204.
Native system realizes controlling the gas fuel after the heat vaporized and control section vaporization of gas fuel by multiple control valve be arranged on the pipeline of described natural gas storage tank 201 and the output pipe of described vaporization heating unit 204 and is back in natural gas storage tank 201 air pressure balance regulated in natural gas storage tank 201 and each transfer conduit.
Described control valve comprises: liquid phase root valve 206, liquid phase remote-controlled valve 205, supercharging return-air valve 208, supercharging return-air remote-controlled valve 207, air feed remote-controlled valve 211.
Pipeline between described vaporization heating unit 204 and described liquid outlet 203 is connected with liquid phase root valve 206 and liquid phase remote-controlled valve 205.
Pipeline between described vaporization heating unit 204 and described gas returning port 202 is connected with supercharging return-air remote-controlled valve 207 and supercharging return-air valve 208.
On the output pipe of described vaporization heating unit 204, the gas-liquid separator 210 for eliminating the too gas fuel of liquid in output pipe is installed.Liquified natural gas fuel remaining in the flow in fuel after vaporization heating unit 204 processes can be filtered out by this gas-liquid separator, improve to the gaseous state purity of motor supply fuel.
Also air feed remote-controlled valve 211 is connected with by pipeline between the motor 2112 that described gas-liquid separator 210 is connected with described system.The amount of gaseous natural gas fuel can be supplied to motor 212 by regulable control by described air feed remote-controlled valve 211.
Between output pipe outside the air feed remote-controlled valve 211 of multiple described vaporization heating unit 204, be connected with switching valve 213.
The two cover air supply system structures that natural gas storage tank 201 connects are substantially identical, the supply air line of two cover air supply systems is separated by switching valve 213, work to respectively corresponding motor 212, when set of system breaks down, the operation of another set of system can not be had influence on, still can be motor 212 provides fuel to supply, and maintains the power supply that boats and ships are not less than 40%.User can also make the supply air line of two cover air supply systems be connected by adjustment switching valve 213, makes the air supply system of non-fault be two motor 212 air feed simultaneously.
Being made it possible to achieve by a natural gas storage tank by the application of technique scheme can be that two cover air supply systems supply fuel simultaneously simultaneously, enhances the stability of ship power system simultaneously.
In some illustrative embodiments, those skilled in the art can also according to above-mentioned mentality of designing, continue the air supply system quantity increasing the connection of same natural gas storage tank, expand to a natural gas storage tank and connect three and above air supply system, also can realize similar function, then this is not elaborated.
Above a kind of gas fuel supply system peculiar to vessel without storage tank compress cell disclosed in the utility model is described in detail, apply specific case herein to set forth mode of execution of the present utility model, the explanation of above embodiment just understands core concept of the present utility model for helping; Meanwhile, for one of ordinary skill in the art, according to the thought of the utility model embodiment, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the utility model embodiment.
Claims (7)
1. without a LNG fuel system peculiar to vessel for storage tank compress cell, it is characterized in that, comprising: for storing the natural gas storage tank with liquid outlet and gas returning port of gas fuel;
Vaporization heating unit, with described liquid outlet and described gas returning port pipeline connection, returns described gas returning port after vaporizing to part LNG fuel; Exported by the gas fuel after components vaporize heats by the relief opening of self;
Multiple control valve, is arranged on the pipeline of described natural gas storage tank and each pipeline of described vaporization heating unit.
2. according to the system described in claim 1, it is characterized in that, also comprise: on the output pipe of described vaporization heating unit, the gas-liquid separator for eliminating liquid fuel in output pipe is installed.
3. according to the system described in claim 1, it is characterized in that, the control valve between described vaporization heating unit and described liquid outlet comprises: liquid phase root valve and liquid phase remote-controlled valve.
4. according to the system described in claim 3, it is characterized in that, the control valve between described vaporization heating unit and described gas returning port comprises: supercharging return-air remote-controlled valve and supercharging return-air valve.
5. according to the system described in claim 2, it is characterized in that, described gas-liquid separator is also connected with air feed remote-controlled valve by pipeline.
6. according to the system described in claim 5, it is characterized in that, described vaporization heating unit comprises multiple, described natural gas storage tank comprises the corresponding multiple described liquid outlet that connects of multiple and described vaporization heating unit and multiple described gas returning port; Between output pipe outside the described air feed remote-controlled valve of multiple described vaporization heating unit, be connected with switching valve.
7. according to the system described in any one of claim 1 ~ 6, it is characterized in that, described vaporization heating unit has a liquid phase liquid entering hole, two gas phase air outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776104.1U CN205206995U (en) | 2015-09-30 | 2015-09-30 | Marine LNG supply of fuel system of no storage tank pressure boost unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520776104.1U CN205206995U (en) | 2015-09-30 | 2015-09-30 | Marine LNG supply of fuel system of no storage tank pressure boost unit |
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| CN205206995U true CN205206995U (en) | 2016-05-04 |
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| CN201520776104.1U Active CN205206995U (en) | 2015-09-30 | 2015-09-30 | Marine LNG supply of fuel system of no storage tank pressure boost unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184691A (en) * | 2016-09-27 | 2016-12-07 | 上海新奥新能源技术有限公司 | A kind of multi-functional LNG generating ship |
| CN107939554A (en) * | 2016-10-12 | 2018-04-20 | 恩凯 | The small-sized LNG fuel systems of ship |
| CN112610881A (en) * | 2020-11-29 | 2021-04-06 | 沪东重机有限公司 | Pressure-adjustable vaporizer and pressure adjusting method |
-
2015
- 2015-09-30 CN CN201520776104.1U patent/CN205206995U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106184691A (en) * | 2016-09-27 | 2016-12-07 | 上海新奥新能源技术有限公司 | A kind of multi-functional LNG generating ship |
| CN107939554A (en) * | 2016-10-12 | 2018-04-20 | 恩凯 | The small-sized LNG fuel systems of ship |
| CN112610881A (en) * | 2020-11-29 | 2021-04-06 | 沪东重机有限公司 | Pressure-adjustable vaporizer and pressure adjusting method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |