CN104534278A - Ceaseless gas station system - Google Patents

Ceaseless gas station system Download PDF

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Publication number
CN104534278A
CN104534278A CN201410810444.1A CN201410810444A CN104534278A CN 104534278 A CN104534278 A CN 104534278A CN 201410810444 A CN201410810444 A CN 201410810444A CN 104534278 A CN104534278 A CN 104534278A
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China
Prior art keywords
gas
power generation
uninterrupted
generation system
reservoir chamber
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CN201410810444.1A
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CN104534278B (en
Inventor
陈露阳
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Shanghai Walking Oil & Natural Gas Co Ltd
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Shanghai Walking Oil & Natural Gas Co Ltd
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Abstract

A ceaseless gas station system comprises a user end used for supplying usable natural gas to users and a middle station. The middle station comprises a storage system and a gas entrapping system. The storage system obtains natural gas from a gas source, the natural gas is stored and allocated to the gas entrapping system, and therefore the usable natural gas can be supplied to the user end. The storage system comprises at least one storage device, the gas entrapping system is connected to the storage device, the storage device comprises at least one tank body and at least one partition wall, the partition wall is arranged in the tank body to form at least two storage chambers, the storage chambers are independently communicated, and the gas is ceaselessly supplied to the gas entrapping system.

Description

A kind of uninterrupted station system
Technical field
The present invention relates to a kind of station system, further, relate to the uninterrupted station system of a kind of rock gas, it can provide uninterrupted aerating and uninterruptable power supply (UPS).
Background technique
Rock gas is widely used in multiple field as a kind of new cleaning fuel with its numerous superior performance had, and is widely used as the fuel or raw material etc. of generating, petrochemical industry, machine-building, glass ceramic, energy source of car, central air conditioning.
Rock gas is a kind of energy efficiently, and its calorific value is the twice of artificial coal gas, and, rock gas is a kind of high-grade energy of clean environment firendly, sulfur-bearing, dust and other harmful matter hardly, the carbon dioxide produced during burning is less than other fossil fuel, causes greenhouse effect lower.Therefore use natural gas power, there is numerous advantages such as alleviating energy scarcity, reduction coal fired power generation ratio, minimizing environmental pollution, and from economic benefit, little investment needed for the unit installed capacity of natural gas power, completion time of project is few, and rate for incorporation into the power network is lower, has stronger competitive ability.
Natural Gas, particularly resident living fuel is also one of importance of natural gas applications, and along with the raising of people's living standard and the enhancing of environmental consciousness, compressed natural gas has been promoted the use of as life fuel in major part city, for the demand of rock gas also in continuous increase.
Gas-fueled vehicles take rock gas as a kind of gaseous fuel automobile of fuel.The methane content of rock gas is generally more than 90%, a kind of well motor car engine fuel, up till now, rock gas is realize and the motor petrol of technical comparative maturity, the substitute fuel of diesel oil by world Gongwei, gasoline is replaced with rock gas, there is price low, pollute the advantages such as few.Along with the continuous increase of the use amount of gas-fueled vehicles, the demand of natural gas filling station and the requirement of build area are also continuing to increase.
Therefore, natural gas power, Natural Gas, natural gas vehicle refueling are in natural gas applications and important and several aspect widely.Three kinds of Land use systems, as the use to same materials, the scope that three uses is relatively uniform.In general, in city, resident living rock gas, natural gas filling station using scope are relatively extensive, and on the basis of introducing source of the gas, natural gas power is also good application mode, if undertaken unified by three kinds of Land use systems, more rationally, fully can utilize natural gas resource.
Natural gas filling station is divided into CNG (Compressed Natural Gas, compressed natural gas) stand, LNG (Liquid Natural Gas, LNG Liquefied natural gas) stands and L-CNG (Liquid-Compressed NaturalGas compresses and liquefies rock gas) builds station jointly.The main application of LNG station take CNG as the automobile of fuel, and the main application of LNG station take LNG as the automobile of fuel, and it is then all applicable to two kinds of automobiles that L-CNG builds station jointly.
Due to geographical conditions restriction, the source of generation of rock gas is general all away from city, rock gas only can exist by production zone at some in other words, and major part uses region all not have rock gas source, therefore need the region that natural gas transport uses to needs by certain mode of movement, carry as by modes such as the high voltage network pipeline carried or gas tanks.
From the mode of movement of rock gas, the rock gas at resident living Natural Gas and CNG station is all adopt the form of compressed natural gas conveyance conduit to be transported to midship by rock gas source under normal circumstances, such as be delivered to gas station or natural gas companies website by source of the gas, then be supplied in user's use by intermediate stations.
More specifically, combustion gas rock gas and CNG station natural gas applications process in, first by high-pressure delivery pipeline, compressed natural gas to be delivered to midship from area of origin, as, gas station of gas company, Vehicle Fueling Station, is reduced to natural pressure and is more than or equal to 10MPa and the gas being not more than 25MPa, then carried to user by compressed natural gas.Because the gas pressure of natural gas line conveying is mostly tens MPas, and combustion gas rock gas generally only needs several MPa, so need the process of carrying from midship to user first to reduce pressure.And also need pipeline compressed natural gas to be carried out boost or reduce pressure or rock gas is divided into different pressure ratings in Vehicle Fueling Station.
And in the prior art, in the process that compressed natural gas is carried to user, be all generally that compressed natural gas enters pressure-regulating box after heater preheating, after pressure-regulating box step-down, then enter pressure maintaining valve and stablize gas pressure, finally directly enter custom system.Can see, in the process that this gas pressure changes, pressure is adjusted to a few MPa by tens or twenties MPas, wherein there is huge pressure drop potential energy, and in prior art, these pressure drop potential energy are almost wasted completely, and being only needs to drop into more capitals to go to regulate pressure, to meet user demand.
In addition on the one hand, be no matter utilize in process at vapour gas station or Natural Gas, the link existed all the time is exactly the temporary transient storage of rock gas.That is, rock gas is delivered to midship from source of the gas by high pressure pipe line.Now, midship is exactly a temporary transient storage site, before natural gas transport to custom system, be temporarily stored in midship.Can see that the conveyance conduit at midship two ends exists huge pressure difference, directly can not be communicated with, and how allow the conveying that the air pressure at two ends keeps unimpeded, and the mutual pressure of two ends separately in pipeline that do not affect, making it keep unimpeded using state, is also the problem needing to be optimized.And, in prior art, adopt tank car gas holder mode to provide the mode of rock gas, general do not have rock gas for subsequent use when rock gas is finished, and needs by changing storage tank, carry out aerating again, aerating and gas storage process can not be carried out simultaneously, and this is that midship stores the major issue existed.
Summary of the invention
One object of the present invention is to provide a kind of uninterrupted station system, wherein, comprises a midship, makes a source of the gas and a user side realize uninterrupted air feed.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described midship is connected between described source of the gas and described user side, cushions described source of the gas air pressure.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, a storage system provides the rock gas of source of the gas described in a refueling system, provides natural body for subsequent use further, to realize the uninterrupted air feed of described refueling system, thus realize the uninterrupted aerating of described user side.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described storage system is connected between described source of the gas and described refueling system, cushions the suction pulsation of described source of the gas to described refueling system.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, a power generation system utilizes the decompression potential energy of rock gas to generate electricity, and the decompression potential energy realizing rock gas utilizes.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, coordinate unified to natural gas, Natural Gas and natural gas power in same system.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described storage system provides source of the gas rock gas described in described power generation system as power source, there is provided rock gas for subsequent use as power source further, to realize the uninterrupted air feed of described power generation system, thus continue generating, further, provide described refueling system uninterruptible power.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described storage system is connected between described source of the gas and described power generation system, cushions the suction pulsation of described source of the gas to described power generation system.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described power generation system provides electric energy in described refueling system, provides described refueling system stand-by electric energy, realizes the uninterruptable power supply (UPS) of described refueling system.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described refueling system and described power generation system obtain rock gas from from source of the gas jointly, and mutually as gas source for subsequent use, described power generation system provides electric energy in described refueling system simultaneously, make described refueling system obtain stand-by electric energy, thus make described refueling system and the described power generation system coordinating and unifying in same system, realize the adequately and reasonably dispensing applications of natural gas resource.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, a user vehicle end and a gas user end provide rock gas in user vehicle and gas user respectively.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described power generation system is arranged between described user side and described storage system, utilizes gas differential pressure to generate electricity, reduces gas pressure, is suitable for being provided in described user side.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described power generation system and described refueling system are connected to described storage system jointly, by described storage system for described power generation system and described refueling system provide uninterrupted air feed, be described refueling system and described power generation system distribute natural gas amount simultaneously, realize the reasonable disposition of natural gas resource.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, the described storage device of described storage system makes described refueling system and relatively independent being communicated with of the rock gas of described power generation system.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, the described storage device of described storage system makes aerating and air feed can be relatively independent.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, the described storage device of described storage system provides described refueling system uninterrupted air feed, makes rock gas enter described refueling system stably, alleviates the vibration that suction pulsation brings a compressor.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, the low pressure gasholder of the gas holder group of described refueling system, middle pressure gas holder and relatively independent being communicated with of high pressure tank, thus can mutually regulate pressure and amount of natural gas.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described power generation system comprises a generator, utilizes natural gas depressurization potential energy to generate electricity, and the rock gas pressure after described generator utilizes reduces, and is suitable for being provided in gas user end.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, described refueling system can be respectively LNG automobile and CNG automobile aerating.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, a heater of described power generation system, improves the pressure of rock gas, to obtain the potential energy that more reduces pressure.
Another object of the present invention is to provide a kind of uninterrupted station system, wherein, a reduction valve of described power generation system can regulate the pressure of Sohu of Soviet Union power generation system, and described accomplish stable power generation is run.
In order to realize above goal of the invention, the invention provides a kind of uninterrupted station system, comprising:
One user side, for provide user can rock gas; With
One midship;
Wherein, described midship comprises a storage system and a refueling system, described storage system from one source of the gas obtain rock gas, store, distribute natural gas in described refueling system, to provide described user side available natural gas;
Wherein, described storage system comprises at least one storage device, described refueling system is connected to described storage device, described storage device comprises at least one tank body and at least one partition wall, described partition wall is arranged at described tank body, form at least Liang Ge reservoir chamber, can be communicated with independently of each other, with uninterrupted air feed in described refueling system.
Preferably, described uninterrupted station system, described midship comprises a power generation system, for generation of electric energy.
Preferably, described uninterrupted station system, described midship comprises a refueling system, and described refueling system is connected to described storage device, obtains rock gas from described storage device.
Preferably, described uninterrupted station system, described midship comprises a refueling system, and described refueling system is connected to described power generation system, obtains rock gas from described power generation system.
Preferably, described uninterrupted station system, described power generation system is connected to described storage system, obtains rock gas generate electricity from described storage device.
Preferably, described uninterrupted station system, described power generation system is electrically connected on described refueling system, provides electric energy in described refueling system.
Preferably, described uninterrupted station system, described user side comprises a user vehicle end and a gas user end, and described user vehicle end is connected to described refueling system, and described gas user end is connected to described power generation system.
Preferably, described uninterrupted station system, described storage system comprises a storage device, and described storage device is connected to described source of the gas.
Preferably, described uninterrupted station system, described power generation system is connected to described storage device, obtains rock gas from described storage device.
Preferably, described uninterrupted station system, described refueling system is connected to described storage device, obtains rock gas from described storage device.
Preferably, described uninterrupted station system, described storage device comprises at least one tank body and at least one partition wall, and partition wall described in each is arranged at described tank interior, and described tank body is divided into multiple reservoir chamber.
Preferably, described uninterrupted station system, described storage device comprises a tank body and three partition walls, and partition wall described in each is arranged in described tank body, described tank body is divided into four reservoir chambers.
Preferably, described uninterrupted station system, reservoir chamber described in each is respectively provided to a few connecting port, for being interconnected with outside.
Preferably, described uninterrupted station system, described in each, connecting port position arranges a valve, for control described store time interior and outside be communicated with.
Preferably, described uninterrupted station system, partition wall described in each arranges at least one connecting valve, for controlling being interconnected between described reservoir chamber.
Preferably, described uninterrupted station system, preferably, described valve and described connecting valve are solenoid valve.
Preferably, described uninterrupted station system, described refueling system comprises a gas holder group, for storing different pressure rock gas.
Preferably, described uninterrupted station system, described gas holder group comprises a low pressure gasholder, presses gas holder and a high pressure tank, described low pressure gasholder in one, described middle pressure gas holder and relatively independent being communicated with of described high pressure tank.
Preferably, described uninterrupted station system, described refueling system comprises at least one compressor, and described compressor is connected to described gas holder group, regulates the rock gas pressure in described gas holder group.
Preferably, described uninterrupted station system, described refueling system comprises at least one aerating equipment, described aerating equipment connection in described gas holder group and described compressor, provide described user side can rock gas.
Preferably, described uninterrupted station system, described refueling system comprises at least one gas-drying apparatus and a sequence control system, and described gas-drying apparatus is connected to described storage device, for dry natural gas, described sequence control system is connected to described gas-drying apparatus.
Preferably, described uninterrupted station system, described sequence control system is connected to described gas holder group and described compressor, controls the work of described compressor.
Preferably, described uninterrupted station system, described power generation system comprises a generator, generates electricity for utilizing natural gas depressurization potential energy.
Preferably, described uninterrupted station system, described generator is electrically connected on described refueling system, provides electric energy in described refueling system.
Preferably, described uninterrupted station system, described power generation system comprises one first stop valve, is arranged between described storage device and described generating solution.
Preferably, described uninterrupted station system, described power generation system comprises one second stop valve, to arrange described in one between gas user end and described generator.
Preferably, described uninterrupted station system, described power generation system comprises a heater, user's heated natural gas, improves rock gas pressure, is connected to described generator.
Preferably, described uninterrupted station system, described power generation system comprises a cooler, for cooled natural gas, is connected to described generator.
Preferably, described uninterrupted station system, described power generation system comprises a reduction valve, is connected to described generator side by side.
Preferably, described uninterrupted station system, described refueling system is a L-CNG refueling system.
Preferably, a kind of uninterrupted natural gas depressurization power generation system, is characterized in that, comprising:
One storage system, for store compressed rock gas;
One power generation system, is connected to described storage system, generates electricity for utilizing natural gas depressurization potential energy; With
One user side, the rock gas after generating electricity for utilizing described power generation system;
Wherein, described storage system comprises at least one storage device, described power generation system is connected to described storage device, described storage device comprises at least one tank body and at least one partition wall, described partition wall is arranged at described tank body, form at least Liang Ge reservoir chamber, can be communicated with independently of each other, with uninterrupted air feed in described power generation system.
Preferably, described uninterrupted natural gas depressurization power generation system, described storage system comprises a storage device, for store compressed rock gas.
Preferably, described uninterrupted natural gas depressurization power generation system, described power generation system is connected to described storage device, obtains rock gas from described storage device.
Preferably, described uninterrupted natural gas depressurization power generation system, described storage device comprises at least one tank body and at least one partition wall, and partition wall described in each is arranged at described tank interior, and described tank body is divided into multiple reservoir chamber.
Preferably, described uninterrupted natural gas depressurization power generation system, described storage device comprises a tank body and a partition wall, and partition wall described in each is arranged in described tank body, and described tank body is divided into Liang Ge reservoir chamber.
Preferably, described uninterrupted natural gas depressurization power generation system, reservoir chamber described in each is respectively provided to a few connecting port, for being interconnected with outside.
Preferably, described uninterrupted natural gas depressurization power generation system, described in each, connecting port position arranges a valve, for control described store time interior and outside be communicated with.
Preferably, described uninterrupted natural gas depressurization power generation system, partition wall described in each arranges at least one connecting valve, for controlling being interconnected between described reservoir chamber.
Preferably, described uninterrupted natural gas depressurization power generation system, preferably, described valve and described connecting valve are solenoid valve.
Preferably, described uninterrupted natural gas depressurization power generation system, described power generation system comprises a generator, generates electricity for utilizing natural gas depressurization potential energy.
Preferably, described uninterrupted natural gas depressurization power generation system, described power generation system comprises one first stop valve, is arranged between described storage device and described generator.
Preferably, described uninterrupted natural gas depressurization power generation system, described power generation system comprises one second stop valve, is arranged between described gas user end and described generator.
Preferably, described uninterrupted natural gas depressurization power generation system, described power generation system comprises a heater, user's heated natural gas, improves rock gas pressure, is connected to described generator.
Preferably, described uninterrupted natural gas depressurization power generation system, described power generation system comprises a cooler, for cooled natural gas, is connected to described generator.
Preferably, described uninterrupted natural gas depressurization power generation system, described power generation system comprises a reduction valve, is connected to described generator side by side.
Preferably, described uninterrupted natural gas depressurization power generation system, preferably described generator is a screw rod generator.
Preferably, a kind of uninterrupted natural gas depressurization electricity-generating method, is characterized in that, comprise the steps:
(A) provide a storage system, store compressed rock gas is in described storage system;
(B) power generation system is provided, discharges the compressed natural gas of described storage system, drive described power generation system to produce electric energy; With
(C) a gas user end is provided, by natural gas transport to the gas user end after described power generation system utilizes.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, it is characterized in that, described storage system comprises at least one storage device, and described power generation system is connected to described storage device, and described storage device comprises at least one tank body and at least one partition wall, described partition wall is arranged at described tank body, form at least Liang Ge reservoir chamber, can be communicated with independently of each other, with uninterrupted air feed in described power generation system.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described power generation system is connected to described storage device, obtains rock gas from described storage device.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described storage device comprises at least one tank body and at least one partition wall, and partition wall described in each is arranged at described tank interior, and described tank body is divided into multiple reservoir chamber.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described storage device comprises a tank body and a partition wall, and partition wall described in each is arranged in described tank body, and described tank body is divided into Liang Ge reservoir chamber.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, reservoir chamber described in each is respectively provided to a few connecting port, for being interconnected with outside.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described in each, connecting port position arranges a valve, for control described store time interior and outside be communicated with.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, partition wall described in each arranges at least one connecting valve, for controlling being interconnected between described reservoir chamber.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, preferably, described valve and described connecting valve are solenoid valve.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described power generation system comprises a generator, generates electricity for utilizing natural gas depressurization potential energy.
Preferably, described uninterrupted natural gas depressurization power generation system, wherein, described power generation system comprises one group of stop valve, is connected near described storage device one end with near described user side one end.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described power generation system comprises one first stop valve, is arranged between described storage device and described generator.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described power generation system comprises one second stop valve, arranges user side described in one and between described generator.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described power generation system comprises a heater, user's heated natural gas, improves rock gas pressure, is connected to described generator.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described power generation system comprises a cooler, for cooled natural gas, is connected to described generator.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, described power generation system comprises a reduction valve, is connected to described generator side by side.
Preferably, described uninterrupted natural gas depressurization electricity-generating method, preferably described generator is a screw rod generator.
Accompanying drawing explanation
Fig. 1 is the system block diagram schematic diagram of the uninterrupted station system according to first preferred embodiment of the present invention.
Fig. 2 is the system flow block diagram of the uninterrupted station system according to first preferred embodiment of the present invention.
Fig. 3 is the storage device schematic diagram of the midship of uninterrupted station system according to first preferred embodiment of the present invention.
Fig. 4 is the refueling system block diagram of the uninterrupted station system of uninterrupted station system according to first preferred embodiment of the present invention.
Fig. 5 is the gas holder group schematic diagram of the refueling system of uninterrupted station system according to first preferred embodiment of the present invention.
Fig. 6 is the block diagram of the power generation system of the uninterrupted station system of uninterrupted station system according to first preferred embodiment of the present invention.
Fig. 7 is another block diagram of the power generation system of the uninterrupted station system of uninterrupted station system according to first preferred embodiment of the present invention.
Fig. 8 is the schematic diagram of the uninterrupted station system according to second preferred embodiment of the present invention.
Fig. 9 is the block diagram representation of the uninterrupted station system according to second preferred embodiment of the present invention.
Figure 10 is another embodiment of the refueling system of uninterrupted station system according to second preferred embodiment of the present invention.
Figure 11 is the decompression electricity-generating method block diagram of the refueling system of uninterrupted station system according to above preferred embodiment of the present invention.
Embodiment
Below describe and realize the present invention for disclosing the present invention to enable those skilled in the art.Preferred embodiment in below describing only as an example, it may occur to persons skilled in the art that other apparent modification.The basic principle of the present invention defined in the following description can be applied to other embodiments, deformation program, improvement project, equivalent and not deviate from the other technologies scheme of the spirit and scope of the present invention.
It is the system block diagram schematic diagram of uninterrupted station system according to a preferred embodiment of the invention shown in reference Fig. 1, Fig. 2.Described uninterrupted station system comprises midship 20 and a user side 30, the rock gas that described midship 20 is carried for storing, distributing a source of the gas 10, described midship 20 transport gas to described user side 30, with provide user can rock gas.
Described midship 20 comprises storage system 21, refueling system 22, and a power generation system 23, and described storage system is used for obtaining rock gas from described source of the gas 10, so that provide described refueling system 22 and/or described power generation system 23 rock gas.Described refueling system 22 for obtaining rock gas from described storage system 22 or described power generation system 23, with provide user can rock gas.Described power generation system 23 is for obtaining rock gas to produce electric energy from described storage system 21.
Described user side 30 comprises user vehicle end 31 and a gas user end 32, described user vehicle end 31 for provide automobile can rock gas, as LNG automobile, CNG automobile.Described gas user end 32 for provide Natural Gas user can rock gas, as resident living combustion gas.That is, described user side 30 is suitable for by described user vehicle end 31 and the coordinating and unifying of described gas user end 32 in same system, to improve the utilization ratio of natural gas resource, and reasonable disposition natural gas resource.More specifically, when described midship 20 provides a certain amount of rock gas, described uninterrupted station system can in internal system, according to described user vehicle end 31 and described gas user end 32 separately required or that expection needs amount of natural gas carry out reasonable disposition rock gas, to improve the utilization ratio of natural gas resource.
It is worth mentioning that, the natural gas via overvoltage that described source of the gas 10 provides be condensed to compressed natural gas CNG or through sub zero treatment be LNG Liquefied natural gas LNG, be delivered to described midship 20, that is, LNG or CNG that described source of the gas 10 provides can be utilized by described uninterrupted station system, conversely, LNG or CNG that described source of the gas 10 provides can be used by LNG or CNG user through internal system process, natural gas transport mode can be any mode that can adopt in prior art, as high pressure pipe line or tank car gas tank etc.Follow-up by different application practice when illustrating that described source of the gas 10 provides LNG and CNG respectively.
When described source of the gas 10 provides compressed natural gas CNG, normal conditions adopt Cemented filling mode at CNG, now in pipeline, the pressure of compressed natural gas CMG is approximately and is more than or equal to 10MPa and the gas being not more than 25MPa, that is, the gas pressure of natural gas line conveying is mostly tens MPas under normal circumstances, and the pressure that combustion gas rock gas is suitable for using generally only needs several MPa, the pressure of automotive natural gas can be greater than this pressure, incompatible between the rock gas pressure that the pressure of the visible described source of the gas 10 provided and needs use, and described midship 20 is exactly the temporary transient rock gas storing described source of the gas 10 and provide, pressure and the described user side 30 of coordinating source of the gas 10 adapt to.
On the other hand, when adopting tank car gas tank mode transport natural gas, need to be offloaded to memory device at the rock gas of transport tank car gas tank, and in the prior art, process of unloading can not be carried out with fueling process usually simultaneously, that is, when the rock gas in memory device is finished, can only fueling process be stopped, by the natural gas unloading in transport tank car to memory device, or change storage tank, until unloaded or changed and could continue fueling process, this interruption brings a lot of inconvenience to user, and working efficiency is lower simultaneously, expends time in more.Therefore, be no matter the means of transportation such as mode or tank car gas tank of Cemented filling, in prior art, continual aerating work can not be provided, and this one of the problem to be solved in the present invention just, specifically disclose below.
With reference to shown in Fig. 2, the natural gas via overcompression that described source of the gas 10 provides is delivered to the described storage system 21 of described midship 20, and described storage system 21 stores rock gas, and provides rock gas in described refueling system 22 and described power generation system 23 respectively.That is, rock gas is assigned to different utilization orientation in described storage system 22, the amount of the rock gas of described storage system 22 needed for described power generation system 23 and described refueling system 22 is distributed, and reasonably configures to reach natural gas resource, improves the utilization ratio of resource.
It is worth mentioning that, the natural gas depressurization potential energy that described power generation system 23 utilizes described storage device 211 to provide produces electric energy, described power generation system 23 is electrically connected on described refueling system 22, there is provided electric energy in described refueling system 22, to supply the electricity consumption of described refueling system 22 infrastructure device, realize the uninterruptable power supply (UPS) of the internal system of described uninterrupted station system further.Follow-uply generation and the method for supplying of electric energy will be illustrated.
As previously mentioned, no matter be to provide LNG when being also to provide CNG, be no matter the mode of Cemented filling mode or the transport of tank car gas tank, all deposit problem both ways, one is the pressure unmatched between the natural pressure that provides of described source of the gas 10 and described user side 30, can not directly apply; Another to ensure that user side obtains continual rock gas, that is, cannot ensure the uninterrupted supply of rock gas.In order to solve the problem of these two aspects, according to a preferred embodiment of the invention, described storage system 21 comprises a storage device 211, with reference to shown in Fig. 3, is the schematic diagram of the storage device of uninterrupted refueling system according to a preferred embodiment of the invention.
Described storage device 211 comprises at least one tank body 2111 and at least one partition wall 2112, and it is inner that described partition wall 2112 is arranged at described tank body 2111, and described tank body 2111 inner space is divided into multiple apotheca, is respectively used to hold rock gas.
According to a preferred embodiment of the invention, described storage device 211 comprises three partition walls 2112, be arranged at described tank body 2111 respectively inner, described tank body 2111 be divided into multiple reservoir chamber, be respectively the first reservoir chamber 2113, second reservoir chamber 2114,3rd reservoir chamber 2115 and the 4th reservoir chamber 2116, described first, second, third and fourth reservoir chamber 2113,2114,2115 and 2116, be suitable for respectively holding rock gas.
Further, described first reservoir chamber 2113, second reservoir chamber 2114, described 3rd reservoir chamber 2115 and described 4th reservoir chamber 2116 are respectively arranged with at least one connecting port 2117, described connecting port 2117 makes described first reservoir chamber 2113, second reservoir chamber 2114, described 3rd reservoir chamber 2115 can be connected with outside respectively with described 4th reservoir chamber 2116.
Further, described in each, connecting port 2117 position is respectively arranged with a valve 2118, is respectively used to control described first reservoir chamber 2114 of reservoir chamber 2113, second, and described 3rd reservoir chamber 2115 is communicated with or isolation with outside with described 4th reservoir chamber 2116.
Also it is worth mentioning that, each partition wall 2112 described is respectively equipped with a connecting valve 2119, for controlling described first reservoir chamber 2114 of reservoir chamber 2113, second, being interconnected between described 3rd reservoir chamber 2115 and described 4th reservoir chamber 2116.In other words, the described connecting valve 2119 that the described partition wall 2112 between shown first reservoir chamber 2113 and described second reservoir chamber 2114 is arranged is for controlling the connection between described first reservoir chamber 2113 and described second reservoir chamber 2114; The described connecting valve 2119 that shown described partition wall 2112 between second reservoir chamber 2114 and described 3rd reservoir chamber 2115 is arranged is for controlling the connection between described first reservoir chamber 2114 and described second reservoir chamber 2115; The described connecting valve 2119 that shown described partition wall 2112 between 3rd reservoir chamber 2115 and described 4th reservoir chamber 2116 is arranged is for controlling the connection between described 3rd reservoir chamber 2115 and described 4th reservoir chamber 2116.
According to a preferred embodiment of the invention, in described uninterrupted station system, described source of the gas 10 is connected to the described connecting port 2117 of described first reservoir chamber 2113 and the 4th reservoir chamber 2116, for inputting rock gas in described first reservoir chamber 2113 and described 4th reservoir chamber 2116.
The described connecting port 2117 of described second reservoir chamber 2114 is connected to described refueling system 22, provides described refueling system 22 rock gas.The described connecting port 2117 of described 4th reservoir chamber 2116 is connected to described power generation system 23, to provide described power generation system 23 rock gas as power source.
In the process of described uninterrupted station system work, the described valve 2118 of the described connecting port 2117 of described first reservoir chamber 2113 is opened, and described source of the gas 10 provides rock gas in described first reservoir chamber 2113 by the described connecting port 2117 of described first reservoir chamber 2113.Described connecting valve 2119 on described partition wall 2112 between described first reservoir chamber 2113 and described second reservoir chamber 2114 is opened, the rock gas of described first reservoir chamber 2113 enters described second reservoir chamber 2114, when described refueling system 22 needs to provide rock gas, open the valve 2118 of the described connecting port 2117 of described second reservoir chamber 2114, make the rock gas of described second reservoir chamber 2114 be provided in described refueling system 22.
Same mode, the described valve 2118 of the described connecting port 2117 of described 4th reservoir chamber 2116 is opened, and described source of the gas 10 provides rock gas in described 4th reservoir chamber 2116 by the described connecting port 2117 of described 4th reservoir chamber 2116.Described connecting valve 2119 on described partition wall 2112 between described 4th reservoir chamber 2116 and described 3rd reservoir chamber 2115 is opened, the rock gas of described 4th reservoir chamber 2113 enters described 3rd reservoir chamber 2114, when described power generation system 23 needs to provide rock gas, open the valve 2118 of the described connecting port 2117 of described 3rd reservoir chamber 2115, make the rock gas of described 3rd reservoir chamber 2115 be provided in described power generation system 23.
It is worth mentioning that, when the amount of natural gas of described second reservoir chamber 2114 or the 3rd reservoir chamber 2115 not enough and have no idea to obtain from the first reservoir chamber 2113 of correspondence or the 4th reservoir chamber 2116 rock gas supplement time, the described valve 2119 on the described partition wall 2112 between described second reservoir chamber 2114 and described 3rd reservoir chamber 2115 can be opened, make to be interconnected between described second reservoir chamber 2114 and described 3rd reservoir chamber 2115.In other words, described first reservoir chamber 2113 and described 4th reservoir chamber 2116 are arranged so that described power generation system 23 and described source of the gas 10 and relatively independent between described refueling system 22 and described source of the gas 10, described second reservoir chamber 2114 provides described refueling system 22 rock gas relatively independently, and by the supplementary continual rock gas that provides of described first reservoir chamber 2113 in described refueling system 23, described 3rd reservoir chamber 2115 provides described power generation system 22 rock gas relatively independently, and by the supplementary continual rock gas that provides of described 4th reservoir chamber 2113 in described power generation system 23, thus realize the uninterrupted air feed of described uninterrupted station system.
Further, the deliverability of gas of described refueling system 22 and described power generation system 23 can be configured as required, also can by the described valve on described the described partition wall 2112 between the second reservoir chamber 2114 and described 3rd reservoir chamber 2115, regulate the amount of natural gas of described second reservoir chamber 2114 and described 3rd reservoir chamber 2115, namely regulate the configuration amount of the rock gas of described refueling system 22 and described power generation system 23, thus more reasonably configure natural gas resource, described power generation system 22 and described power generation system 23 is made to be integrated in described uninterrupted station system.
It is worth mentioning that, described first reservoir chamber 2113, second reservoir chamber 2114, the quantity of the described connecting port 2117 that described 3rd reservoir chamber 2115 and described 4th reservoir chamber 2116 are arranged respectively and described valve 2118 can be arranged as required, is not limited to quantity shown in figure.
Can see from above, described first reservoir chamber 2113 of the described storage device 211 of described storage system 211, described second reservoir chamber 2114, described 3rd reservoir chamber 2115, there is provided rock gas in described refueling system 22 and described power generation system 23 respectively with described 4th reservoir chamber 2116, make described refueling system 22 and described power generation system 23 can obtain continual natural gas supply, relatively independent work.Further, described first reservoir chamber 2113 and relatively independent being interconnected in described second reservoir chamber 2114, described first reservoir chamber 2113 is connected to described source of the gas 10 and described second reservoir chamber 2114 as a damping device, the described second continual rock gas for subsequent use in reservoir chamber 2114 is provided, simultaneous buffering source of the gas 10 impacts the air pressure of described second reservoir chamber 2114, make rock gas mild enter described second reservoir chamber 2114, namely, by described first reservoir chamber 2113 for described refueling system 22 provides continual rock gas, and the CNG making source of the gas 10 provide enters described refueling system 22 stably.In like manner, described 3rd reservoir chamber 2115 and relatively independent being interconnected in described 4th reservoir chamber 2116, described 4th reservoir chamber 2114 is connected to described source of the gas 10 and described 3rd reservoir chamber 2115 as a damping device, the described 3rd continual rock gas for subsequent use in reservoir chamber 2115 is provided, simultaneous buffering source of the gas 10 impacts the air pressure of described 3rd reservoir chamber 2115, make rock gas mild enter described 3rd reservoir chamber 2115, namely, by described 4th reservoir chamber 2113 for described power generation system 23 provides continual rock gas, and the CNG making source of the gas 10 provide enters described power generation system 22 stably.In addition, from aforementioned, described second reservoir chamber 2114 and described 3rd reservoir chamber 2115 are by separate being communicated with of described connecting valve 2119, rock gas for subsequent use can be provided mutually, the amount of the rock gas entering described refueling system 22 and described power generation system 23 can be regulated simultaneously, further guarantee rock gas uninterrupted, reasonably configures natural gas resource simultaneously.
Described refueling system 22 and described power generation system 23 can respectively since described storage system 21 obtains rock gas, storage system 21 described in natural gas via is allocated in described refueling system 22 and described power generation system 23, and provide described refueling system 22 and described power generation system 23 rock gas for subsequent use by the described storage device 211 of described storage system 21, by described first reservoir chamber 2113 and the separate setting be communicated with in described second reservoir chamber 2114, the fueling process making described second reservoir chamber 2114 be provided in described refueling system 22 can obtain the gas storage process of rock gas with described first reservoir chamber 2113 from described source of the gas 10 can be relatively independent, carry out mutually can not affecting simultaneously, solve more scavenging air receiver and the discontinuous problem caused, in like manner, by described 3rd reservoir chamber 2115 and the separate setting be communicated with in described 4th reservoir chamber 2116, the air feed process making described 3rd reservoir chamber 2115 be provided in described power generation system 22 can obtain the gas storage process of rock gas with described 4th reservoir chamber 2116 from described source of the gas 10 can be relatively independent, carries out mutually can not affecting simultaneously, on the other hand, the setting be communicated with that described second reservoir chamber 2114 is separate with described 3rd reservoir chamber 2115, the rock gas that the rock gas that described second reservoir chamber 2113 is stored and described 3rd reservoir chamber 2115 store can be provided in described refueling system 22 and described power generation system 23 as subsequent use mutually, makes described refueling system 22 and described power generation system 23 be arranged at described uninterrupted station system more in phase, further, the rock gas that described power generation system 23 utilizes described storage device 211 to provide produces electric energy, be provided in described refueling system 22, described refueling system 22 infrastructure device standby power supply is provided, thus ensure that the infrastructure device of described refueling system 22 works continually and steadily, further ensure the non-stop run of described refueling system 22, thus provide user side 30 uninterrupted natural gas supply, in addition, described first reservoir chamber 2113 and described 4th reservoir chamber 2116 are arranged between described source of the gas 10 and described refueling system 22 and described power generation system 23, thus buffering or the suction pulsation of isolating described source of the gas 10 suction pulsation to the equipment of described refueling system 22 and described power generation system 23 impacts.
It is worth mentioning that, described first reservoir chamber 2113, described second reservoir chamber 2114, the relative position of described 3rd reservoir chamber 2115 and described 4th reservoir chamber 2116 is not limited to position shown in figure, and the relative position that can realize above-mentioned functions is all feasible.In other words, described first reservoir chamber 2113, described second reservoir chamber 2114, described 3rd reservoir chamber 2115 and described 4th reservoir chamber 2116, four reservoir chambers, wherein two described reservoir chambers are for storing rock gas for subsequent use, and reservoir chamber described in two other is respectively used to connect described refueling system 22 and described power generation system 23, provide described refueling system 22 and described power generation system 23 rock gas respectively.Wherein Liang Ge reservoir chamber is connected with one of them reservoir chamber in two other reservoir chamber respectively with described two other, thus provides described refueling system 22 and the uninterrupted rock gas of described power generation system 23.Described refueling system 22 and described power generation system 23 provide mutually rock gas for subsequent use separately, realize the uninterrupted air feed of described refueling system 22 and described power generation system 23 and the adjustable configuration of natural gas resource of described refueling system 22 and described power generation system 23 further, thus realize described refueling system 22 and provide uninterrupted rock gas in described user vehicle end 31, described power generation system 23 provides uninterrupted rock gas in described gas user end 32.And described power generation system 23 provides uninterruptible power in the infrastructure device of described refueling system 22, ensure the uninterrupted operation of described refueling system 22 infrastructure device further, ensure the uninterrupted aerating of described refueling system 22 further.
Therefore, described storage system 21 achieves the uninterrupted air feed to described refueling system 22 and described power generation system 23 from many aspects, by rock gas coordinated allocation in described aerating be 22 and described power generation system 23, realize described refueling system 22 and described power generation system 23 to coordinate to be arranged at described uninterrupted station system, utilize natural gas resource more efficiently.
Preferably, the described connecting valve 2119 described valve 2118 that arranges of described connecting port 2117 and described partition wall 2112 arranged is solenoid valve.
Below illustrate the concrete principle that rock gas is supplied to described refueling system 22 and described power generation system 23 respectively.
Described storage device 211 provides rock gas in described refueling system 22, and described refueling system 22 provides the rock gas being suitable for using in described user vehicle end 31.With reference to shown in Fig. 4, it is the schematic diagram of the refueling system of uninterrupted station system according to one preferred embodiment of the present invention.When described source of the gas 10 provides CNG, described source of the gas 10 carries compressed natural gas CNG to the described storage device 211 of described storage system 21, described storage device 211 provides refueling system 23 described in rock gas, described refueling system 23 provide user can rock gas in described user vehicle end 32.
Described refueling system 22 comprises at least one gas drier 221, described gas drier 221 is connected to described storage device 211, rock gas for providing described storage device 211 carries out drying, to provide the rock gas of described refueling system 22 drying, prevent from occurring that ice is gambled in subsequent compression expansion temperature-fall period.
Described refueling system 22 also comprises at least one compressor 222, gas holder group 223 and an aerating equipment 224, described compressor 222 for compressed natural gas, to natural gas boosting.Residing gas holder group 223 gas is communicated in described gas drier 221, for storing rock gas.Described compressor 222 gas is communicated in described gas drier 221.Described aerating equipment 224 for provide described user vehicle end 31 can rock gas.
Further, described refueling system 22 comprises a sequence control system 225, for controlling described compressor 222 and described gas holder group 223.That is, described storage device 211 provides rock gas in described gas drier 221, make the natural gas via super-dry process entering described refueling system 22, rock gas after super-dry process enters compressor 222 and/or gas holder group 223 respectively through the configuration of described sequence control system 225, finally by described compressor and/or described gas holder group 223 by user can rock gas be provided in described aerating equipment 224, so that described user vehicle end 31 uses.In other words, rock gas after described gas drier 221 drying process, directly can be provided in described aerating equipment 224 through compressor 222 compression, also described gas holder group 223 can be stored in, in case of need, described aerating equipment 224 is provided in through described compressor 222 compression.
According to a preferred embodiment of the invention, described gas holder group 223 comprises a low pressure gasholder 2231, presses gas holder 2232 and a high pressure tank 2233 in one.Described low pressure gasholder 2231, described middle pressure gas holder 2232 and described high pressure tank 2233 are connected to described compressor 222, make described middle pressure gas holder 2232 and described high pressure tank 2233 be connected to described compressor 222 and are in different air pressure grades respectively.
It is worth mentioning that, described compressor is respectively to described low pressure gasholder 2231, described middle pressure gas holder 2232 and described high pressure tank 2233 are inflated, thus air displacement does not need the actual aerating speed meeting each described aerating equipment 224 completely, first described aerating equipment 224 get gas from described low pressure gasholder 2231 groups, when pressure in the automobile steel cylinder of described user vehicle end 31 and the pressure reduction of described low pressure gasholder 2231 or aerating speed are less than predefined value, described aerating equipment 224 transfers to get gas until described high pressure tank 2233 from described middle pressure gas holder 2232.In whole process, described compressor 222 only just can start lower than during their respective predefined values at the pressure of individual gas holder group 223.
It is worth mentioning that, described storage device 211 is connected between described refueling system 22 and described source of the gas 10, play certain buffer function, the compressed natural gas that cushioning described source of the gas 10 provides impacts the air pressure of described refueling system 22, gas is made steadily to enter described gas drier 221, thus enter described compressor 222 stably, alleviate the vibration that suction pulsation brings described compressor 222.
With reference to shown in Fig. 5, it is the gas holder group schematic diagram of the described refueling system of uninterrupted refueling system according to a preferred embodiment of the invention.
Described gas holder group 223 comprises a gas holder body 22310 and at least two partitioning walls 22311, it is inner that described partitioning wall is arranged at described gas holder body 22310, described gas holder body 22310 inside is isolated into described low pressure gasholder 2231 respectively, described middle pressure gas holder 2232 and described high pressure tank 2233.
Described low pressure gasholder 2231, described middle pressure gas holder 2232 and described high pressure tank 2232 have at least one import 22312 and at least one outlet 22313 respectively, described import 22312 is connected to described sequence control system, and described outlet 22313 is connected to described compressor 222 and described aerating equipment 224.
Import 22312 described in each and outlet 22313 described in each arrange a control valve 22314, and described control valve 22314 is for controlling the connection of the inside and outside equipment gas of described gas holder group 223.
Further, partitioning wall 22311 described in each is respectively provided to control valve 22314 described in few, is respectively used to control described low pressure gasholder 2231, the gas connected sum isolation between described middle pressure gas holder 2232 and described high pressure tank 2233.That is, described low pressure gasholder 2231, described middle pressure gas holder 2232 and described high pressure tank 2233 can be added by described compression and control respective internal gas pressure, also can mutually between adjustments of gas pressure, thus the uninterrupted air feed of the described aerating equipment 224 of guarantee further.
Also it is worth mentioning that, described low pressure gasholder 2231, described middle pressure gas holder 2232 and described high pressure tank 2233 are by relatively independent being communicated with of described control valve 22314.That is, when described low pressure gasholder 2231, when described middle pressure gas holder 2232 and described high pressure tank 2233 need to increase pressure by described compressor 222, close described low pressure gasholder 2231, described control valve between described middle pressure gas holder 2232 and described high pressure tank 2233, make described low pressure gasholder 2231, described middle pressure gas holder 2232 and described high pressure tank 2233 can pressurize alone, can not interact, reduce pressure rising time, and pressurization and fueling process relatively independent, can carry out simultaneously.
Described refueling system 22 also comprises at least one safety check 226 and is connected between described gas holder group 223 and described sequence control dish 225, prevents the backflow of the rock gas in described gas storing pipe group 223.
Described storage device 211 provides described power generation system 23 rock gas on the other hand, and the rock gas after described power generation system 23 utilizes reoffers in described gas user end 32.When described source of the gas 10 provides compressed natural gas CNG, gas pressure is more than or equal to 10MPa and is not more than 25MPa, therefore rock gas is present in described storage device 211 with certain pressure, and the pressure required for described gas user end 32 is about a few MPa, applicable pressure drop potential energy is there is between these two pressure differences, according to a preferred embodiment of the invention, described power generation system utilizes the pressure drop potential energy that the CMG in storage device is delivered between described gas user end 32, improve the utilization ratio of the energy, reduce the waste of the energy.
It is the schematic diagram of the described power generation system of uninterrupted station system according to a preferred embodiment of the invention with reference to Fig. 6.Described source of the gas 10 carries compressed natural gas to the described storage device 211 of described storage system 21, described storage device 211 provides compressed natural gas to described power generation system 23, and the rock gas after described power generation system 23 reduces pressure utilization is provided in described gas user end 32.The electric energy that described power generation system 23 produces is provided in described refueling system 22, so that realize the uninterruptable power supply (UPS) of described uninterrupted station system.
Described power generation system 23 comprises generator 231 and one first stop valve 232 and one second stop valve 233.Described generator 231 generates electricity for utilizing the decompression potential energy of compressed natural gas.Described first stop valve 232 and described second stop valve 233 are arranged near one end of described storage device with near one end of described gas user end 32 respectively, for described generator 231 is mutually isolated with described gas user end 32 with described storage device 211 or be communicated with.
Further, described power generation system 23 also comprises at least one reduction valve 234, is parallel to described generator 231, to ensure that described power generation system safely and steadily runs.
When described first stop valve 232 and described second stop valve 233 are opened, that is, when described generator 231 works, the natural gas distribution that described storage device 211 provides is two-way, one tunnel, through described first stop valve 232, enters described generator 231 and generates electricity, and is reduced by the gas pressure after generating of carrying out reducing pressure, be provided in described gas user end 32, the electric energy that described generator 231 produces is provided in described refueling system 22; Another road, through the decompression of described reduction valve 234, is provided in described gas user end 32.On the other hand, described reduction valve 234 can regulate the rock gas after described generator 231 reduces pressure utilization, to ensure that the rock gas of suitable pressure is provided in described gas user end 32.
When described first stop valve 232 and described second stop valve 233 are closed, that is, when described generator 231 does not work, the rock gas that described storage device 211 provides, directly through described reduction valve 234, is provided in described gas user end 32 through post-decompression rock gas.
It is worth mentioning that, described generator 231 is preferably screw rod generator.
It is another schematic diagram of the described power generation system of uninterrupted station system according to a preferred embodiment of the invention with reference to Fig. 7.Described power generation system comprises heater 235 and a cooler 236.Described heater 235 for heated natural gas, to improve pressure.Described cooler is used for cooled natural gas.Further, described heater is arranged between described first stop valve 232 and described generator 231, and described cooler 236 is arranged between described generator 231 and described second stop valve 233.That is, the compressed natural gas provided by described storage device 211 arrives described heater 235 through described first stop valve 232, and compressed natural gas is through the heating of described heater 235, and pressure increases, so that obtain more pressure drop potential energy.Rock gas pressure after described generator 231 utilizes reduces, then cools through described cooler, is transported to described gas user end 32 through described second stop valve 233.
By the formula of gas pressure intensity
PV＝nRT，
(P is gas pressure intensity, and V is gas volume, and n is the amount of substance of gas, and R is constant, and T is temperature.)
Known, for the gas of a certain amount of n, the size of pressure is relevant with temperature T and volume V, and when volume V is constant, raised temperature, can increase the pressure P of gas.Therefore, add the pressure that described heater 235 can raise rock gas, thus there is more pressure drop potential energy, thus obtain more electric energy.
With reference to the block diagram that Fig. 8 is uninterrupted station system according to a further advantageous embodiment of the invention.Described uninterrupted station system comprises an a midship 20A and user side 30A, the rock gas that described midship 20A carries for storing a source of the gas 10A, described midship 20A transport gas to described user side 30A, with provide user can rock gas.
Described midship 20A comprises a storage system 21A, a refueling system 22A, and a power generation system 23A, and described storage system 21A is used for obtaining rock gas from described source of the gas 10, so that provide described refueling system 22 and/or described power generation system 23 rock gas.Described refueling system 22 for obtaining rock gas from described storage system 22 or described power generation system 23, with provide user can rock gas.Described power generation system 23 is for obtaining rock gas to produce electric energy from described storage system 21.
Described user side 30A comprises an a user vehicle end 31A and gas user end 32A, described user vehicle end 31A for provide automobile can rock gas, as LNG automobile, CNG automobile.Described gas user end 32A for provide Natural Gas user can rock gas, as resident living combustion gas.That is, described user side 30A is suitable for described user vehicle end 31A and described gas user end 32A to be integrated in same system, to improve the utilization ratio of natural gas resource, and reasonable disposition natural gas resource.More specifically, when described midship 20A provides a certain amount of rock gas, described uninterrupted station system can in internal system, according to described user vehicle end 31A and described gas user end 32A separately required or that expection needs amount of natural gas carry out reasonable disposition rock gas, to improve the utilization ratio of natural gas resource.
Described power generation system 23A is connected to described storage system 21A, the compressed natural gas that facilitating the use described storage system 21A provides carries out decompression generating, described power generation system 23A is connected to described gas user end 32A and described refueling system 23A, and described user vehicle end 31A is connected to described refueling system 23A.
Described source of the gas 10A provides rock gas in described storage system 22A, the described storage device 211A of described storage system 21 provides compressed natural gas CMG in described power generation system 23A, rock gas after described power generation system 23A utilizes is provided in described gas user end 32A and described refueling system 22A respectively, with provide described user vehicle end 31A and described gas user end 32A can rock gas.
From aforementioned, compressed natural gas CMG is that pressure is approximately and is more than or equal to 10MPa and the gas being not more than 25MPa, that is, the gas pressure of natural gas line conveying is mostly tens MPas under normal circumstances, and the pressure that described gas user end 32 is suitable for using generally only needs several MPa, pressure needed for CNG automobile is approximately twenties MPas, and the pressure of LNG automobile is about 0.8 MPa, that is, the required pressure of LNG automobile is lower, and the gas of described gas user end 32 is unsuitable for CNG automobile.
It is the schematic diagram of another embodiment of the power generation system of uninterrupted station system according to a preferred embodiment of the invention with reference to Fig. 9.Described source of the gas 10A carries compressed natural gas to the described storage device 211A of described storage system 21A, described storage device 211A provides compressed natural gas to described power generation system 23A, and the rock gas after described power generation system 23A decompression utilizes is provided in described gas user end 32.The electric energy that described power generation system 23 produces is provided in described refueling system 22A, so that realize the uninterruptable power supply (UPS) of described uninterrupted station system.
Described power generation system 23A comprises a generator 231A and one first stop valve 232A and one second stop valve 233A.Described generator 231A generates electricity for utilizing the decompression potential energy of compressed natural gas.Described first stop valve 232A and described second stop valve 233A is arranged near one end of described storage device 211A with near one end of described gas user end 32A respectively, for by mutually isolated for described generator 231A and described storage device 211A and described gas user end 32A or UNICOM.
Further, described power generation system 23A also comprises at least one reduction valve 234A, is parallel to described generator 231A, to ensure that described power generation system 23A safely and steadily runs.
When described first stop valve 232A and described second stop valve 233A opens, that is, when described generator 231A works, the natural gas distribution that described storage device 211A is provided in described power generation system 23A is two-way, one tunnel, through described first stop valve 232A, enters described generator 231A and generates electricity, and is reduced by the gas pressure after generating of carrying out reducing pressure, be provided in described gas user end 32A, the electric energy that described generator 231A produces is provided in described refueling system 22A; Another road, through the decompression of described reduction valve 234A, is provided in described gas user end 32A.On the other hand, described reduction valve 234A can regulate the rock gas after described generator 231A reduces pressure utilization, to ensure that the rock gas of suitable pressure is provided in described gas user end 32A.
When described first stop valve 232A and described second stop valve 233A closes, that is, when described generator 231A does not work, the rock gas that described storage device 211A provides, directly through described reduction valve 234A, is provided in described gas user end 32A through post-decompression rock gas.
Described power generation system 23A comprises a cooler 236A, is connected between described refueling system 22A and described generator 231A.Contracting rock gas is after described generator decompression generating, and pressure reduces, and cools, becomes LNG, be provided in described refueling system 22A, to provide LNG automobile available natural gas through described cooler 236.
It is another mode of execution block diagram of the refueling system of uninterrupted station system according to a preferred embodiment of the present invention with reference to Figure 10.Shown uninterrupted station system comprises a refueling system 22B, and being suitable for described storage device 211 provides LNG.Described refueling system 22B is connected to the described storage device 211 of described storage system 21.Described refueling system 22B comprises a LNG high-pressure service pump 2201B, an one LNG high pressure gasifier 2202B and CNG gas holder group 2203B, described high-pressure service pump 2201B is connected to described storage device 211, pressurize to extract LNG, described LNG high pressure gasifier is connected to described high-pressure service pump 2201B, for being gasified by LNG.Described CNG gas holder group 2203B is connected to described LNG high pressure gasifier, for storing rock gas.That is, the LNG that described storage device 211 provides has LNG to change CNG into after described LNG high-pressure service pump 2201B and described LNG high pressure gasifier 2202B so that be provided in CNG aerator, be suitable for providing CNG automobile can rock gas.
Further, described refueling system 22B comprises an a vaporizer 2204B and cryopump 2205B and LNG filling machine 2206, and described vaporizer 2204 is connected to described storage device 211, for the rock gas that gasifies.Described cryopump is connected to described storage device 211, provide LNG automobile can rock gas.That is, LNG in described storage device 211 entered after described vaporizer 2204B gasifies to be stored in described storage device 211, extract the rock gas after gasification through described cryopump 2205, be provided in described LNG filling machine so that provide LNG automobile can rock gas.That is, described refueling system 22B is a L-CNG gas station, can be applicable to LNG automobile and CNG automobile respectively.
According to foregoing, the invention provides a kind of compressed natural gas electricity-generating method, described method comprises the steps:
(A) provide a storage system 21, store compressed rock gas is in described storage system 21;
(B) power generation system 23 is provided, discharges the compressed natural gas of described storage system 21, drive described power generation system 23 to produce electric energy; With
(C) a gas user end 32 is provided, by the natural gas transport after described power generation system 23 utilizes to described gas user end 32.
In described step (A), described storage system comprises at least one storage device 211, for store compressed rock gas.Described power generation system 23 is connected to described storage device 211, obtains rock gas from described storage device 211.
Described storage device 211 comprises at least one tank body 2111 and at least one partition wall 2112, and it is inner that partition wall 2112 described in each is arranged at described tank body 2111, and described tank body 2111 is divided into multiple reservoir chamber.
More specifically, described storage device 2111 comprises tank body 2111 and a partition wall 2112, and partition wall 2112 described in each is arranged in described tank body 2111, and described tank body 2111 is divided into Liang Ge reservoir chamber.Reservoir chamber described in each is respectively provided to a few connecting port 2117, for being interconnected with outside.Described in each, connecting port 2117 position arranges a valve 2118, is communicated with in described reservoir chamber for controlling with outside.Partition wall 2112 described in each arranges at least one connecting valve 2119, for controlling being interconnected between described reservoir chamber.
It is worth mentioning that, preferably, described valve 2112 and described connecting valve 2119 are solenoid valve.
Described power generation system 23 comprises a generator 231, generates electricity for utilizing natural gas depressurization potential energy.
Described power generation system 23 comprises one first stop valve 232, is arranged between described storage device 211 and described generator 231.
Described power generation system 23 comprises one second stop valve 233, is arranged between described user side 30 and described generator 231.
Described power generation system 23 comprises a heater 235, user's heated natural gas, improves rock gas pressure, is connected to described generator 23.
Described power generation system 23 comprises a cooler 236, for cooled natural gas, is connected to described generator 23.
Described power generation system 23 comprises a reduction valve 234, is connected to described generator 231 side by side.
It is worth mentioning that, preferably described generator 231 is a screw rod generator.
One skilled in the art will understand that the embodiments of the invention shown in foregoing description and accompanying drawing only limit the present invention as an example and not.Object of the present invention is complete and effectively realize.Function of the present invention and structural principle are shown in an embodiment and are illustrated, do not deviating under described principle, embodiments of the present invention can have any distortion or amendment.

Claims (10)

1. a uninterrupted station system, is characterized in that, comprising:
One user side, for provide user can rock gas; With
One midship;
Wherein, described midship comprises a storage system and a refueling system, described storage system from one source of the gas obtain rock gas, store, distribute natural gas in described refueling system, to provide described user side available natural gas;
Wherein, described storage system comprises at least one storage device, described refueling system is connected to described storage device, described storage device comprises at least one tank body and at least one partition wall, described partition wall is arranged at described tank body, form at least Liang Ge reservoir chamber, can be communicated with independently of each other, with uninterrupted air feed in described refueling system.
2. uninterrupted station system as claimed in claim 1, wherein, described tank body is provided with and is able to the separate multiple reservoir chambers be communicated with.
3. station system as claimed in claim 2 uninterrupted, wherein, each reservoir chamber described has at least one connecting port respectively, for and ft connection, each connecting port position described arranges a valve, for controlling the connection of the described connecting port of described reservoir chamber.
4. uninterrupted station system as claimed in claim 3, wherein, described midship comprises a power generation system, and described power generation system is connected to described storage device, obtains rock gas, utilize natural gas depressurization potential energy to generate electricity from described storage device.
5. uninterrupted station system as claimed in claim 4, wherein, described power generation system is electrically connected on described aerator, provides electric energy in described aerator.
6. uninterrupted station system as claimed in claim 5, wherein, described multiple reservoir chamber, wherein Liang Ge reservoir chamber is respectively used to store rock gas for subsequent use, two other reservoir chamber connects described refueling system and described power generation system respectively, and described refueling system is communicated with described power generation system rock gas is separate.
7. uninterrupted station system as claimed in claim 6, wherein, described power generation system comprises at least one generator, and utilize natural gas depressurization potential energy to generate electricity, described generator is arranged between described storage device and described user side.
8. uninterrupted station system as claimed in claim 7, wherein, described power generation system comprises at least one reduction valve, is connected to described generator side by side.
9. uninterrupted station system as claimed in claim 8, wherein, described power generation system comprises one group of stop valve, is connected near described storage device one end with near described user side one end
10. a uninterrupted natural gas depressurization power generation system, is characterized in that, comprising:
One storage system, for store compressed rock gas;
One power generation system, is connected to described storage system, generates electricity for utilizing natural gas depressurization potential energy; With
One user side, the rock gas after generating electricity for utilizing described power generation system;
Wherein, described storage system comprises at least one storage device, described power generation system is connected to described storage device, described storage device comprises at least one tank body and at least one partition wall, described partition wall is arranged at described tank body, form at least Liang Ge reservoir chamber, can be communicated with independently of each other, with uninterrupted air feed in described power generation system.
CN201410810444.1A 2014-12-19 2014-12-19 A kind of uninterrupted station system Expired - Fee Related CN104534278B (en)

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