CN106287203A - A kind of novel double fluid gauge LNG filling machine - Google Patents
A kind of novel double fluid gauge LNG filling machine Download PDFInfo
- Publication number
- CN106287203A CN106287203A CN201610806834.0A CN201610806834A CN106287203A CN 106287203 A CN106287203 A CN 106287203A CN 201610806834 A CN201610806834 A CN 201610806834A CN 106287203 A CN106287203 A CN 106287203A
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- Prior art keywords
- lng
- gauge
- filling machine
- storage tank
- novel double
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of novel double fluid gauge LNG filling machine, for filling the LNG of LNG storage tank to LNG air container；Including the liquid phase stream gauge being sequentially connected with, control valve and liquid feeding rifle；The input of described liquid phase stream gauge is connected with LNG storage tank, and the outfan of liquid feeding rifle is connected with LNG air container；Also including the gentle multi-phase flowmeter of return-air rifle being sequentially connected with, the input of described return-air rifle is connected with LNG air container, and the outfan of gas phase flow rate meter is connected with LNG storage tank；Also including the electrometer controller for controlling fueling process calculated flow rate, described electrometer controller is connected with LNG storage tank, liquid phase stream gauge, gas phase flow rate meter, control valve signal respectively.The present invention novel double fluid gauge LNG filling machine, the residual air that can realize LNG air container reclaims, and the function of measuring of residual air return-air amount is realized by Ultrasonic Wave Flowmeter, thus not only reduce the internal pressure of LNG air container, ensure that LNG fills smoothly, and the filling measuring accuracy of LNG filling machine can be improved.
Description
Technical field
The present invention relates to filling machine technical field, more particularly, it relates to a kind of novel double fluid gauge LNG filling machine.
Background technology
Along with the development of China's LNG automobile industry, LNG gas station is continuously increased, the technology of LNG filling machine and application
Also at high speed development, the market demand is increasing, and the requirement to LNG filling machine performance is more and more higher.
During work, the liquid feeding rifle of LNG filling machine inserts the inlet of vehicle-mounted LNG gas bomb so that LNG liquid is from filling machine
Input duct flows to liquid feeding rifle, subsequently into vehicle-mounted LNG gas bomb.Now, the LNG gasified in vehicle-mounted LNG gas bomb steams
Get angry so that internal pressure is big, not only can largely effect on the smoothness of LNG filling, and the meter of LNG filling machine filling can be affected
Accuracy of measurement.Therefore, how to improve the filling measuring accuracy of LNG filling machine, be that of present stage LNG filling industry research is important
Problem.
It addition, LNG i.e. liquefied natural gas, be natural gas after purifying, heated up by compression, at the work of mix refrigerant
Under with, heat is removed in cooling, then throttling expansion and obtain, temperature-162 DEG C under normal pressure；Owing to LNG is that natural gas is at ultralow temperature
Under state, the product of cooling liquid, easily gasifies after therefore it is heated.Therefore to preventing LNG gasification is also to need present stage to solve
A major issue certainly.
Summary of the invention
It is an object of the invention to overcome shortcoming of the prior art with not enough, it is provided that a kind of novel double fluid gauge LNG adds
Mechanism of qi, the function that the residual air that this LNG filling machine can realize LNG air container reclaims and measures, thus not only reduce LNG gas storage and hold
The internal pressure of device, it is ensured that LNG fills smoothly, and the filling measuring accuracy of LNG filling machine can be improved.
In order to achieve the above object, the technical scheme is that: a kind of novel double fluid gauge LNG adds
Mechanism of qi, for filling the LNG of LNG storage tank to LNG air container；It is characterized in that: the liquid phase stream gauge that includes being sequentially connected with,
Control valve and liquid feeding rifle；The input of described liquid phase stream gauge is connected with LNG storage tank, and the outfan of liquid feeding rifle holds with LNG gas storage
Device connects；Also including the gentle multi-phase flowmeter of return-air rifle being sequentially connected with, the input of described return-air rifle is with LNG air container even
Connecing, the outfan of gas phase flow rate meter is connected with LNG storage tank；Also include the electrometer control for controlling fueling process calculated flow rate
Device processed, described electrometer controller is connected with LNG storage tank, liquid phase stream gauge, gas phase flow rate meter, control valve signal respectively.
In such scheme, the present invention is connected with LNG air container and LNG storage tank respectively by the gentle multi-phase flowmeter of return-air rifle
Connect, then form a return flow line so that the residual air of LNG air container is back to LNG storage tank, it is achieved LNG air container remaining
Gas reclaims, thus reduces the pressure within LNG air container, it is ensured that LNG can fill smoothly.Meanwhile, gas phase flow rate can be passed through
Measurement measures the return-air amount of LNG air container residual air.In fueling process, the electronics controlling device of filling machine automatically controls aerating
Journey, and carry out computing according to the flow signal of liquid phase stream gauge gentle multi-phase flowmeter output, LNG storage tank is filled into LNG gas storage and holds
The difference of the variable of the gentle multi-phase flowmeter of the variable that LNG mass is liquid phase stream gauge in device.Relative to tradition filling machine only
Record liquid volume added as the adding amount of filling machine for, the present invention arranges the gas phase flow rate meter that is connected with electronics controlling device signal,
Using the difference of liquid volume added and return-air amount as the adding amount of LNG filling machine, such that the measuring accuracy of filling machine is more smart
Really.
Described liquid phase stream amount is calculated as coriolis mass flowmeters.
Described gas phase flow rate is calculated as Ultrasonic Wave Flowmeter.The present invention uses Ultrasonic Wave Flowmeter, from usability
From the point of view of energy angle, degree of accuracy of its metering is not affected by temperature, pressure, density and the viscosity of detected fluid, and long-term accuracy is steady
Qualitative good, the advantage such as use flexibly and the life-span is long, easy to maintenance.And, it is fully able to meet wanting of LNG filling machine return-air metering
Ask.From the point of view of economy, its Costco Wholesale is the cheapest relative to from the point of view of other effusion meter, and this point is for LNG filling machine
Production domesticization development particularly important.
Present invention additionally comprises internal pre-cold loop；The pre-cold loop in described inside is by LNG storage tank, liquid phase stream gauge and control valve
It is sequentially connected with, and control valve outfan is connected formation with LNG storage tank.
Present invention additionally comprises outside pre-cold loop；The pre-cold loop in described outside is by LNG storage tank, liquid phase stream gauge, control valve
It is sequentially connected with liquid feeding rifle, and the outfan of liquid feeding rifle is connected formation with LNG storage tank.
The present invention realizes the pre-cooling cycle of filling machine by the pre-cold loop of internal pre-cold loop and outside: in order to by filling machine
The temperature (in the case of filling machine is idle, system pipeline temperature-visualized is room temperature) of system pipeline reduces, inside filling machine
Pipeline is hydraulically full and correlation behavior parameter reaches cooling and requires that (line temperature reaches subzero 120 DEG C) pre-cooling afterwards terminates (whole
Pre-coo time about 2 to 3 minutes), such that it is able to avoid LNG medium to vaporize, prevent the generation of biphase gas and liquid flow.In whole pre-cooling
The liquid phase stream gauge of stage filling machine does not measures.
Described control valve is low temperature pneumatic emergency stop valve.
Pipeline between described LNG storage tank and liquid phase stream gauge is provided with bleeding device；Described bleeding device is by stop valve
V1, relief valve SV1, Pressure gauge PG, pressure transducer P and peripheral conduits connect composition；Described Pressure gauge PG and pressure sensing
Device P is all connected with the pipeline between LNG storage tank and liquid phase stream gauge.If pipeline pressure is excessive realizes superpressure by bleeding device
Diffuse.
It is provided with relief valve between the gentle multi-phase flowmeter of described LNG storage tank.
Present invention additionally comprises and there is preset and printing function auxiliary device；Described auxiliary device and electronics controlling device signal
Connect.
The present invention novel double fluid gauge LNG filling machine is so work:
1, the liquid feeding rifle of LNG filling machine is inserted on the systemic circulation muzzle of LNG filling machine, presses on filling machine keyboard
" pre-cooling " key, filling machine starts pre-cooling.The pre-cold loop of the pre-cold loop of LNG liquid internal and outside returns to LNG storage tank, works as filling machine
Internal duct is hydraulically full and correlation behavior parameter reaches pre-cooling after cooling requires and terminates, and this stage filling machine does not measures.
2, after pre-cooling terminates, the liquid feeding rifle of LNG filling machine being inserted vehicle-mounted LNG air container inlet, return-air rifle inserts
LNG air container gas returning port, presses " aerating " key on LNG filling machine keyboard, and filling machine starts aerating.LNG liquid is from aerating
Machine input duct flows to liquid phase stream gauge, control valve and liquid feeding rifle, subsequently into vehicle-mounted LNG air container；Vehicle-mounted LNG gas storage is held
The LNG boil-off gas cooled via return air rifle, gas phase flow rate meter and the return line that have gasified in device return to LNG storage tank.Adding of LNG filling machine
Fluence is the difference of liquid phase stream gauge and the variable of gas phase flow rate meter, and filling machine can automatically calculate difference and show.As automobile LNG
Gas bomb fill it up with LNG after filling machine autostop (also can shift to an earlier date manual shut-down or quota aerating).
3, LNG filling machine first takes off return-air rifle from vehicle-mounted LNG air container after shutting down, then takes off liquid feeding rifle, by liquid feeding rifle
Insert the liquid feeding gun platform of LNG filling machine, complete aerating.
In whole fueling process, the gentle multi-phase flowmeter of liquid phase stream gauge measure flow through LNG filling machine fluid density and
The isoparametric physical signalling of quality, is converted into electric impulse signal by signal adapter and is sent to electrometer controller, LNG filling machine
On pressure transducer and Pressure gauge the duty of LNG filling machine can be transferred to LNG gas station server so that it is to whole
Individual fueling process is monitored, and is automatically performed aerating work.
Compared with prior art, the invention have the advantages that and beneficial effect:
1, the present invention novel double fluid gauge LNG filling machine, the residual air that can realize LNG air container reclaims, and passes through gas
Ultrasonic flowmeter realizes the function of measuring of residual air return-air amount, thus not only reduces the internal pressure of LNG air container, it is ensured that
LNG fills smoothly, and can improve the filling measuring accuracy of LNG filling machine, and its Costco Wholesale is relative to other effusion meter simultaneously
From the point of view of the cheapest.
2, the present invention realizes the pre-cooling cycle of filling machine by the pre-cold loop of internal pre-cold loop and outside, such that it is able to keep away
Exempt from the vaporization of LNG medium, prevent the generation of biphase gas and liquid flow.
Accompanying drawing explanation
Fig. 1 is the workflow diagram of the present invention novel double fluid gauge LNG filling machine；
Fig. 2 is the fundamental diagram of the present invention novel double fluid gauge LNG filling machine；
Detailed description of the invention
The present invention is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Embodiment
As depicted in figs. 1 and 2, the present invention novel double fluid gauge LNG filling machine, is for being filled extremely by the LNG of LNG storage tank
LNG air container, this LNG filling machine includes that the liquid phase stream gauge being sequentially connected with, low temperature pneumatic emergency stop valve are as control
Valve, liquid feeding flexible pipe and liquid feeding rifle, the return-air rifle being sequentially connected with, the gentle multi-phase flowmeter of return-air flexible pipe, and be used for controlling aerating
The electrometer controller of journey calculated flow rate；Wherein, the input of liquid phase stream gauge is connected with LNG storage tank, the output of liquid feeding rifle
End is connected with LNG air container, and the input of return-air rifle is connected with LNG air container, and the outfan of gas phase flow rate meter stores up with LNG
Tank connect, electrometer controller respectively with LNG storage tank, liquid phase stream gauge, gas phase flow rate meter, control valve signal connect.
The liquid phase stream amount of the present invention is calculated as coriolis mass flowmeters, and gas phase flow rate is calculated as Ultrasonic Wave Flowmeter.
The present invention uses Ultrasonic Wave Flowmeter, and from the point of view of serviceability angle, the degree of accuracy of its metering is not by the temperature of detected fluid
The impact of degree, pressure, density and viscosity, long-term accuracy good stability, the advantage such as use flexibly and the life-span is long, easy to maintenance.And
And, it is fully able to meet the requirement of LNG filling machine return-air metering.From the point of view of economy, its Costco Wholesale flows relative to other
From the point of view of gauge the cheapest, this point for LNG filling machine production domesticization develop particularly important.
Present invention additionally comprises the pre-cold loop of internal pre-cold loop and outside, wherein, internal pre-cold loop is by LNG storage tank, liquid
Multi-phase flowmeter and control valve are sequentially connected with, and control valve outfan is connected formation with LNG storage tank.And outside pre-cold loop by
LNG storage tank, liquid phase stream gauge, control valve, liquid feeding flexible pipe and liquid feeding rifle are sequentially connected with, and the outfan of liquid feeding rifle stores up with LNG
Tank connects formation.The present invention realizes the pre-cooling cycle of filling machine by the pre-cold loop of internal pre-cold loop and outside: in order to add
The temperature (in the case of filling machine is idle, system pipeline temperature-visualized is room temperature) of mechanism of qi system pipeline reduces, and works as filling machine
Internal duct is hydraulically full and correlation behavior parameter reaches cooling and requires that (line temperature reaches subzero 120 DEG C) pre-cooling afterwards terminates
(whole pre-coo time about 2 to 3 minutes), such that it is able to avoid LNG medium to vaporize, prevents the generation of biphase gas and liquid flow.Whole
The liquid phase stream gauge of individual pre-cooling stage filling machine does not measures.
Pipeline between LNG storage tank and the liquid phase stream gauge of the present invention is provided with bleeding device, and this bleeding device is by ending
Valve V1, relief valve SV1, Pressure gauge PG, pressure transducer P and peripheral conduits connect composition, and wherein, Pressure gauge PG and pressure pass
Sensor P is all connected with the pipeline between LNG storage tank and liquid phase stream gauge.Realize surpassing by bleeding device if pipeline pressure is excessive
Press scattered.And it is provided with relief valve between the gentle multi-phase flowmeter of LNG storage tank.
Present invention additionally comprises and have preset and printing function auxiliary device, this auxiliary device is with electronics controlling device signal even
Connect.
The present invention novel double fluid gauge LNG filling machine is so work:
1, the liquid feeding rifle of LNG filling machine is inserted on the systemic circulation muzzle of LNG filling machine, presses on filling machine keyboard
" pre-cooling " key, filling machine starts pre-cooling.The pre-cold loop of the pre-cold loop of LNG liquid internal and outside returns to LNG storage tank, works as filling machine
Internal duct is hydraulically full and correlation behavior parameter reaches pre-cooling after cooling requires and terminates, and this stage filling machine does not measures.
2, after pre-cooling terminates, the liquid feeding rifle of LNG filling machine being inserted vehicle-mounted LNG air container inlet, return-air rifle inserts
LNG air container gas returning port, presses " aerating " key on LNG filling machine keyboard, and filling machine starts aerating.LNG liquid is from aerating
Machine input duct flows to liquid phase stream gauge M1, control valve GV1, liquid feeding flexible pipe and liquid feeding rifle LN, holds subsequently into vehicle-mounted LNG gas storage
Device；LNG boil-off gas cooled via return air rifle GN, return-air flexible pipe, gas phase flow rate meter M2 and the return-air gasified in vehicle-mounted LNG air container
Pipeline returns to LNG storage tank.The adding amount of LNG filling machine is the difference of the variable of liquid phase stream gauge M1 and gas phase flow rate meter M2, adds
Mechanism of qi can automatically calculate difference and show.After LNG filled it up with by automobile LNG gas bomb, filling machine autostop (also can shift to an earlier date manually
Shut down or quota aerating).
3, LNG filling machine first takes off return-air rifle GN from vehicle-mounted LNG air container after shutting down, then takes off liquid feeding rifle LN, will add
Liquid rifle LN inserts the liquid feeding gun platform LNK of LNG filling machine, completes aerating.
In whole fueling process, liquid phase stream gauge M1 gentle multi-phase flowmeter M2 measures that to flow through the fluid of LNG filling machine close
Degree and the isoparametric physical signalling of quality, be converted into electric impulse signal by signal adapter and be sent to electrometer controller, and LNG adds
The duty of LNG filling machine can be transferred to LNG gas station server by pressure transducer P and Pressure gauge PG on mechanism of qi,
Make it that whole fueling process to be monitored, be automatically performed aerating work.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine, simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (9)
1. a novel double fluid gauge LNG filling machine, for filling the LNG of LNG storage tank to LNG air container；Its feature exists
In: include liquid phase stream gauge, control valve and the liquid feeding rifle being sequentially connected with；The input of described liquid phase stream gauge is with LNG storage tank even
Connecing, the outfan of liquid feeding rifle is connected with LNG air container；Also include the gentle multi-phase flowmeter of return-air rifle being sequentially connected with, described time
The input of air gun is connected with LNG air container, and the outfan of gas phase flow rate meter is connected with LNG storage tank；Also include for controlling
The electrometer controller of fueling process calculated flow rate, described electrometer controller respectively with LNG storage tank, liquid phase stream gauge, gas
Multi-phase flowmeter, control valve signal connect.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: described liquid phase stream amount is calculated as section
Li Aoli mass flowmenter.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: described gas phase flow rate is calculated as gas
Body ultrasonic flowmeter.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: also include internal pre-cold loop；
The pre-cold loop in described inside is sequentially connected with by LNG storage tank, liquid phase stream gauge and control valve, and control valve outfan stores up with LNG
Tank connects formation.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: also include outside pre-cold loop；
The pre-cold loop in described outside is sequentially connected with by LNG storage tank, liquid phase stream gauge, control valve and liquid feeding rifle, and the output of liquid feeding rifle
End is connected formation with LNG storage tank.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: described control valve is low wet
Dynamic quick action emergency valve.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: described LNG storage tank and liquid phase stream
Pipeline between gauge is provided with bleeding device；Described bleeding device is passed by stop valve V1, relief valve SV1, Pressure gauge PG, pressure
Sensor P and peripheral conduits connect composition；Described Pressure gauge PG and pressure transducer P all with LNG storage tank and liquid phase stream gauge it
Between pipeline connect.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: described LNG storage tank and gas phase stream
Relief valve it is provided with between gauge.
Novel double fluid gauge LNG filling machine the most according to claim 1, it is characterised in that: also include having preset and beat
The auxiliary device of print function；Described auxiliary device is connected with electronics controlling device signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610806834.0A CN106287203A (en) | 2016-09-06 | 2016-09-06 | A kind of novel double fluid gauge LNG filling machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610806834.0A CN106287203A (en) | 2016-09-06 | 2016-09-06 | A kind of novel double fluid gauge LNG filling machine |
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| CN201610806834.0A Pending CN106287203A (en) | 2016-09-06 | 2016-09-06 | A kind of novel double fluid gauge LNG filling machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446513A (en) * | 2021-06-30 | 2021-09-28 | 成都渝能能源设备有限公司 | LNG (liquefied Natural gas) dispenser adopting single return gas metering and method |
| CN114992511A (en) * | 2022-06-29 | 2022-09-02 | 厚普清洁能源(集团)股份有限公司 | Gas cylinder gas filling quality determination method and gas filling system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113446513A (en) * | 2021-06-30 | 2021-09-28 | 成都渝能能源设备有限公司 | LNG (liquefied Natural gas) dispenser adopting single return gas metering and method |
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| CN114992511A (en) * | 2022-06-29 | 2022-09-02 | 厚普清洁能源(集团)股份有限公司 | Gas cylinder gas filling quality determination method and gas filling system |
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Application publication date: 20170104 |