CN204572248U - A kind of marine engine fuel supplying device - Google Patents
A kind of marine engine fuel supplying device Download PDFInfo
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- CN204572248U CN204572248U CN201520247983.9U CN201520247983U CN204572248U CN 204572248 U CN204572248 U CN 204572248U CN 201520247983 U CN201520247983 U CN 201520247983U CN 204572248 U CN204572248 U CN 204572248U
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- lng
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- tank
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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
A kind of marine engine fuel supplying device, it comprises controller, LNG fuel storage system, marine main controllable cylinder inner high voltage directly spray LNG engine fuel supply system and generating subsidiary engine fuel supply system peculiar to vessel; LNG fuel storage system comprises LNG tank, LNG pressure sensor and LNG liquid level sensor, marine main controllable cylinder inner high voltage directly sprays LNG engine fuel supply system and comprises LNG immersed pump, LNG vaporizer, high-pressure natural gas surge tank and promote mainly gas electromagnetic valve, and generating subsidiary engine fuel supply system peculiar to vessel comprises natural gas depressurization device, low pressure natural gas voltage stabilizing gas holder, subsidiary engine gas electromagnetic valve and pressure release fuel gas pipeline; The utility model adopts the mode of high pressure direct injection LNG motor and common Spark Ignition Natural Gas Engines joint work, not only increases the utilization ratio of boat-carrying LNG fuel, has saved the energy; And without the need to diffusing rock gas in air, decrease the discharge of greenhouse gases.
Description
Technical field
The utility model relates to a kind of fuel supplying device, and specifically a kind of marine engine fuel supplying device, belongs to gas engine technical field.
Background technique
Along with the increase of ship's in possession, marine engine HC, CO, NOx and sulphide arrange into as important atmospheric pollution sources, be also main CO simultaneously
2one of emission source.And be that the marine engine of fuel has pollutant and the low advantage of carbon emission with rock gas, decrease the pollution to water system in ship's navigation process using gas as the fuel of motor simultaneously.Particularly cylinder inner high voltage directly sprays LNG motor, owing to adopting natural cylinder inner high voltage direct injection technology, engine thermal efficiency is high, moment of torsion is large, responsiveness is good, becomes the main development direction of marine engine, and country adopts natural gas engine to give many preferential policies to boats and ships.
In boat-carrying fuel system, LNG fuel storage is in Cryo Heat Insulation vacuum tank, but because LNG tank cannot be accomplished with the external world completely adiabatic, there is certain heat exchange, LNG tank deposit with using process in there is the vaporization of LNG in tank, the pressure in tank can be caused after LNG is vaporizated into rock gas to raise.Cylinder inner high voltage direct-jet natural gas engine directly cannot utilize the low pressure natural gas after vaporization, for ensureing that the Security of LNG tank needs regularly to diffuse in air the rock gas of vaporization, causes energy waste and discharge of methane.
Model utility content
For the deficiencies in the prior art, the utility model provides a kind of marine engine fuel supplying device, and the LNG vaporized due to LNG tank and extraneous heat exchange can make full use of by it, not only reduces greenhouse gas emission, and energy saving.
The technical scheme in the invention for solving the technical problem is: a kind of marine engine fuel supplying device, described marine engine comprises marine main controllable cylinder inner high voltage and directly sprays LNG motor and generating subsidiary engine peculiar to vessel, it is characterized in that, comprise controller, LNG fuel storage system, marine main controllable cylinder inner high voltage directly spray LNG engine fuel supply system and generating subsidiary engine fuel supply system peculiar to vessel, described generating subsidiary engine peculiar to vessel is common Spark Ignition Natural Gas Engines;
Described LNG fuel storage system comprises LNG tank, LNG pressure sensor and LNG liquid level sensor, described marine main controllable cylinder inner high voltage directly sprays LNG engine fuel supply system and comprises LNG immersed pump, LNG vaporizer, high-pressure natural gas surge tank and promote mainly gas electromagnetic valve, and described generating subsidiary engine fuel supply system peculiar to vessel comprises natural gas depressurization device, low pressure natural gas voltage stabilizing gas holder, subsidiary engine gas electromagnetic valve and pressure release fuel gas pipeline; Described LNG tank is for storing LNG Liquefied natural gas, top is provided with LNG liquid addition mouth, described LNG pressure sensor and LNG liquid level sensor are arranged on the top of LNG tank, described LNG immersed pump is arranged on LNG tank inner bottom part and the delivery outlet of immersed pump is communicated with the inlet opening of LNG vaporizer, the delivery outlet of described LNG vaporizer is communicated with the gas inlet of high-pressure natural gas surge tank, and the gas outlet of described high-pressure natural gas surge tank is communicated with by the suction port promoted mainly gas electromagnetic valve and marine main controllable cylinder inner high voltage and directly spray LNG motor; The gas outlet of described high-pressure natural gas surge tank is also communicated with the gas inlet of low pressure natural gas voltage stabilizing gas holder by natural gas depressurization device, the gas outlet of described low pressure natural gas voltage stabilizing gas holder is communicated with the suction port of generating subsidiary engine peculiar to vessel by subsidiary engine gas electromagnetic valve, and the gas inlet of described low pressure natural gas voltage stabilizing gas holder is also communicated with LNG tank by pressure release fuel gas pipeline; The electric control air-release valve and mechanical pressure release valve that are connected in parallel is provided with in described pressure release fuel gas pipeline; Described LNG pressure sensor is connected with the signal input part of controller respectively with LNG liquid level sensor, the control signal output terminal of described controller respectively with promote mainly gas electromagnetic valve, subsidiary engine gas electromagnetic valve and electric control air-release valve and be connected.
Preferably, be provided with liquid feeding line check valve between described LNG liquid addition mouth and LNG tank, be provided with low pressure line one-way valve between described natural gas depressurization device and low pressure natural gas voltage stabilizing gas holder, described pressure release fuel gas pipeline is communicated with LNG tank by pressure release one-way valve.
Preferably, described pressure release fuel gas pipeline is provided with diffusion valve near LNG tank place.
Preferably, described controller is integrated in electrical control system for engine.
The beneficial effects of the utility model are as follows: the utility model adopts cylinder inner high voltage directly to spray LNG motor diesel oil substitute motor as marine main controllable motor, not only reduce because the discharge of marine engine HC, CO, NOx and sulphide causes the pollution to water system in ship's navigation process, and cylinder inner high voltage directly sprays, and LNG engine thermal efficiency is high, moment of torsion is large, responsiveness is good, adopt common Spark Ignition Natural Gas Engines as generating subsidiary engine peculiar to vessel, and the high-pressure natural gas in high-pressure natural gas surge tank is converted into low pressure natural gas by natural gas depressurization device and flows to the low pressure natural gas that low pressure natural gas voltage stabilizing gas holder is generating subsidiary engine peculiar to vessel supply pressure stability, so not only can directly spray LNG motor common fuel with marine main controllable cylinder inner high voltage, avoid and need to lay in the loaded down with trivial details of two kinds of fuel simultaneously, and by the pressure release fuel gas pipeline of generating subsidiary engine fuel supply system peculiar to vessel, the subsidiary engine that generated electricity by the LNG storeship of vaporizing due to LNG tank and extraneous heat exchange burns and makes full use of, decrease the discharge of greenhouse gases, save the energy.
The utility model adopts the mode of high pressure direct injection LNG motor and common Spark Ignition Natural Gas Engines joint work, improves the utilization ratio of boat-carrying LNG fuel, has saved the energy; The LNG vaporized due to LNG tank and extraneous heat exchange is transported to the low pressure natural gas voltage stabilizing gas holder storeship subsidiary engine that generates electricity by pressure release fuel gas pipeline and burns and utilize, and without the need to diffusing rock gas in air, decreases the discharge of greenhouse gases.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure, 101LNG tank, 102LNG filling opening, 103 liquid feeding line check valves, 104LNG pressure transducer, 105LNG liquid level sensor, 106 diffusion valves, 107 pressure release one-way valves, 108 pressure release fuel gas pipelines, 109 mechanical pressure release valve, 110 electric control air-release valves, 111 low pressure natural gas voltage stabilizing gas holder, 112 subsidiary engine gas electromagnetic valves, 113 generating subsidiary engines peculiar to vessel, 114 low pressure line one-way valves, 115 controllers, 116 natural gas depressurization devices, 117 marine main controllable cylinder inner high voltages directly spray LNG motor, 118 promote mainly gas electromagnetic valve, 119 high-pressure natural gas surge tanks, 120LNG vaporizer, 121LNG immersed pump.
Embodiment
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.In addition, the utility model can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.It should be noted that parts illustrated in the accompanying drawings are not necessarily drawn in proportion.The utility model eliminates the description of known assemblies and treatment technology and process to avoid unnecessarily limiting the utility model.
As shown in Figure 1, a kind of marine engine fuel supplying device of the present utility model comprises controller 115, LNG fuel storage system, marine main controllable cylinder inner high voltage directly spray LNG engine fuel supply system and generating subsidiary engine fuel supply system peculiar to vessel; Described marine engine comprises marine main controllable cylinder inner high voltage and directly sprays LNG motor 117 and generating subsidiary engine 113 peculiar to vessel, and described generating subsidiary engine 113 peculiar to vessel is common Spark Ignition Natural Gas Engines.
Described LNG fuel storage system comprises LNG tank 101, LNG pressure sensor 104 and LNG liquid level sensor 105, in order to store LNG fuel, and ensures the Security of fuel supplying device; Described marine main controllable cylinder inner high voltage directly sprays LNG engine fuel supply system and comprises LNG immersed pump 121, LNG vaporizer 120, high-pressure natural gas surge tank 119 and promote mainly gas electromagnetic valve 118, with thinking that promoting mainly cylinder inner high voltage directly sprays the high-pressure natural gas that LNG motor provides pressure stability; Described generating subsidiary engine fuel supply system peculiar to vessel comprises natural gas depressurization device 116, low pressure natural gas voltage stabilizing gas holder 111, subsidiary engine gas electromagnetic valve 112 and pressure release fuel gas pipeline 108, by the low pressure natural gas thinking generating subsidiary engine peculiar to vessel supply pressure stability.
Described LNG tank 101 is for storing LNG Liquefied natural gas, top is provided with LNG liquid addition mouth 102, liquid feeding line check valve 103 is provided with between described LNG liquid addition mouth 102 and LNG tank 101, described LNG pressure sensor 104 and LNG liquid level sensor 105 are arranged on the top of LNG tank 101, described LNG immersed pump 121 is arranged on LNG tank inner bottom part and the delivery outlet of immersed pump is communicated with the inlet opening of LNG vaporizer 120, the delivery outlet of described LNG vaporizer 120 is communicated with the gas inlet of high-pressure natural gas surge tank 119, the gas outlet of described high-pressure natural gas surge tank 119 is communicated with by the suction port promoted mainly gas electromagnetic valve 118 and marine main controllable cylinder inner high voltage and directly spray LNG motor 117, the gas outlet of described high-pressure natural gas surge tank 119 is also communicated with the gas inlet of low pressure natural gas voltage stabilizing gas holder 111 by natural gas depressurization device 116, in order to the high-pressure natural gas in high-pressure natural gas surge tank 119 to be converted into low pressure natural gas, to flow to low pressure natural gas voltage stabilizing gas holder 111 be the low pressure natural gas that generating subsidiary engine 113 peculiar to vessel supplies pressure stability, can directly spray LNG motor common fuel with marine main controllable cylinder inner high voltage like this, avoid and need to lay in the loaded down with trivial details of two kinds of fuel simultaneously, low pressure line one-way valve 114 is provided with between natural gas depressurization device and low pressure natural gas voltage stabilizing gas holder, the gas outlet of described low pressure natural gas voltage stabilizing gas holder 111 is communicated with the suction port of generating subsidiary engine 113 peculiar to vessel by subsidiary engine gas electromagnetic valve 112, the gas inlet of described low pressure natural gas voltage stabilizing gas holder 111 is also communicated with LNG tank 101 by pressure release fuel gas pipeline 108, described pressure release fuel gas pipeline 118 is communicated with LNG tank 101 by pressure release one-way valve 107, burn in order to subsidiary engine that the LNG storeship of vaporizing due to LNG tank and extraneous heat exchange is generated electricity and make full use of, decrease the discharge of greenhouse gases, save the energy, the electric control air-release valve 110 be connected in parallel and mechanical pressure release valve 109 is provided with in described pressure release fuel gas pipeline 108, described LNG pressure sensor 104 is connected with the signal input part of controller 115 respectively with LNG liquid level sensor 105, the control signal output terminal of described controller 115 respectively with promote mainly gas electromagnetic valve 118, subsidiary engine gas electromagnetic valve 112 and electric control air-release valve 110 and be connected.
Preferably, described pressure release fuel gas pipeline 118 is provided with diffusion valve 106 near LNG tank place.
Preferably, described controller 115 is integrated in electrical control system for engine.
Working principle of the present utility model is set forth below in conjunction with Fig. 1.
As shown in Figure 1, LNG liquid addition mouth 102 is installed on the top of LNG tank 101, liquid feeding pipeline is arranged liquid feeding line check valve 103, in order to LNG is added LNG tank by top, gas phase remains on the top in LNG tank, prevents, in the process of filling LNG, LNG occurs and " seethes " phenomenon.LNG after filling is stored in tank, LNG pressure sensor 104 and LNG liquid level sensor 105 are installed on the top of LNG tank 101, pressure in LNG tank and liquid level height is monitored in real time, as pressure release and the parameter judging whether fueling in order to the LNG pressure of collection and LNG liquid level information to be sent to controller 115.Diffusion valve 106 is installed at the top of LNG tank 101, is used for the fuel in blow-down tank when safeguarding or overhaul LNG tank and fuel supplying device.
LNG immersed pump 121 has been installed in the bottom of LNG tank 101, LNG in tank is pressurized to setting pressure and is transported to LNG vaporizer 120 by immersed pump, in LNG vaporizer, the fuel of liquid is vaporizated into high-pressure natural gas and enters high-pressure natural gas surge tank 119, then entering the high-pressure natural gas pressure regulation injection control module of marine main controllable LNG motor 117 through promoting mainly gas electromagnetic valve 118, finally spraying into engine cylinder combustion acting with high pressure conditions.
Boats and ships need various system to need electricity consumption in navigation, maintenance process, boats and ships configure natural gas power subsidiary engine, and generating subsidiary engine uses normal pressure rock gas as fuel.This fuel supplying device connects natural gas depressurization device 116 and high-pressure natural gas pressure is reduced to normal pressure in high-pressure natural gas surge tank 119 one end, low pressure natural gas voltage stabilizing gas holder 111 is entered, as subsidiary engine fuel for generating subsidiary engine 113 peculiar to vessel provides the rock gas of normal pressure through low pressure line one-way valve 114.
Because LNG tank 101 cannot be accomplished with the external world completely adiabatic, there is certain heat exchange, deposit with using process in there is the vaporization of LNG in tank, gaseous pressure in tank is raised, when gaseous pressure height to a certain extent time electric control air-release valve 110 open, the rock gas of gaseous state enters low pressure natural gas voltage stabilizing gas holder 111 and is then entering work by combustion in generating subsidiary engine peculiar to vessel, avoids in air, to diffuse rock gas cause energy waste and pollution of atmosphere.In pressure release fuel gas pipeline 108, mechanical pressure release valve 109 is also installed, to ensure safety relief.
Marine engine fuel supplying device described in the utility model have employed the mode of high pressure direct injection LNG motor and common Spark Ignition Natural Gas Engines joint work, the LNG storeship of vaporizing due to LNG tank and the extraneous heat exchange subsidiary engine that generates electricity burns and utilizes, without the need to diffusing rock gas in air, save fuel, reduce the discharge of methane.
The above is preferred implementation of the present utility model; for those skilled in the art; under the prerequisite not departing from the utility model principle, can also make some improvements and modifications, these improvements and modifications are also regarded as protection domain of the present utility model.
Claims (4)
1. a marine engine fuel supplying device, described marine engine comprises marine main controllable cylinder inner high voltage and directly sprays LNG motor and generating subsidiary engine peculiar to vessel, it is characterized in that, comprise controller, LNG fuel storage system, marine main controllable cylinder inner high voltage directly spray LNG engine fuel supply system and generating subsidiary engine fuel supply system peculiar to vessel, described generating subsidiary engine peculiar to vessel is common Spark Ignition Natural Gas Engines;
Described LNG fuel storage system comprises LNG tank, LNG pressure sensor and LNG liquid level sensor, described marine main controllable cylinder inner high voltage directly sprays LNG engine fuel supply system and comprises LNG immersed pump, LNG vaporizer, high-pressure natural gas surge tank and promote mainly gas electromagnetic valve, and described generating subsidiary engine fuel supply system peculiar to vessel comprises natural gas depressurization device, low pressure natural gas voltage stabilizing gas holder, subsidiary engine gas electromagnetic valve and pressure release fuel gas pipeline; Described LNG tank is for storing LNG Liquefied natural gas, top is provided with LNG liquid addition mouth, described LNG pressure sensor and LNG liquid level sensor are arranged on the top of LNG tank, described LNG immersed pump is arranged on LNG tank inner bottom part and the delivery outlet of immersed pump is communicated with the inlet opening of LNG vaporizer, the delivery outlet of described LNG vaporizer is communicated with the gas inlet of high-pressure natural gas surge tank, and the gas outlet of described high-pressure natural gas surge tank is communicated with by the suction port promoted mainly gas electromagnetic valve and marine main controllable cylinder inner high voltage and directly spray LNG motor; The gas outlet of described high-pressure natural gas surge tank is also communicated with the gas inlet of low pressure natural gas voltage stabilizing gas holder by natural gas depressurization device, the gas outlet of described low pressure natural gas voltage stabilizing gas holder is communicated with the suction port of generating subsidiary engine peculiar to vessel by subsidiary engine gas electromagnetic valve, and the gas inlet of described low pressure natural gas voltage stabilizing gas holder is also communicated with LNG tank by pressure release fuel gas pipeline; The electric control air-release valve and mechanical pressure release valve that are connected in parallel is provided with in described pressure release fuel gas pipeline; Described LNG pressure sensor is connected with the signal input part of controller respectively with LNG liquid level sensor, the control signal output terminal of described controller respectively with promote mainly gas electromagnetic valve, subsidiary engine gas electromagnetic valve and electric control air-release valve and be connected.
2. a kind of marine engine fuel supplying device according to claim 1, it is characterized in that, liquid feeding line check valve is provided with between described LNG liquid addition mouth and LNG tank, be provided with low pressure line one-way valve between described natural gas depressurization device and low pressure natural gas voltage stabilizing gas holder, described pressure release fuel gas pipeline is communicated with LNG tank by pressure release one-way valve.
3. a kind of marine engine fuel supplying device according to claim 1, is characterized in that, described pressure release fuel gas pipeline is provided with diffusion valve near LNG tank place.
4. a kind of marine engine fuel supplying device according to any one of claims 1 to 3, it is characterized in that, described controller is integrated in electrical control system for engine.
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CN201520247983.9U CN204572248U (en) | 2015-04-22 | 2015-04-22 | A kind of marine engine fuel supplying device |
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CN201520247983.9U CN204572248U (en) | 2015-04-22 | 2015-04-22 | A kind of marine engine fuel supplying device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104791142A (en) * | 2015-04-22 | 2015-07-22 | 济南大学 | Fuel supply system and method for marine engine |
CN105673258A (en) * | 2016-03-08 | 2016-06-15 | 任焕轩 | LNG (Liquefied Natural Gas) vehicle-mounted gas cylinder supercharging system |
-
2015
- 2015-04-22 CN CN201520247983.9U patent/CN204572248U/en not_active Withdrawn - After Issue
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104791142A (en) * | 2015-04-22 | 2015-07-22 | 济南大学 | Fuel supply system and method for marine engine |
CN104791142B (en) * | 2015-04-22 | 2017-05-03 | 济南大学 | Fuel supply system and method for marine engine |
CN105673258A (en) * | 2016-03-08 | 2016-06-15 | 任焕轩 | LNG (Liquefied Natural Gas) vehicle-mounted gas cylinder supercharging system |
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Granted publication date: 20150819 Effective date of abandoning: 20170503 |