CN206206998U - A kind of new double fluid gauge LNG filling machines - Google Patents
A kind of new double fluid gauge LNG filling machines Download PDFInfo
- Publication number
- CN206206998U CN206206998U CN201621040506.6U CN201621040506U CN206206998U CN 206206998 U CN206206998 U CN 206206998U CN 201621040506 U CN201621040506 U CN 201621040506U CN 206206998 U CN206206998 U CN 206206998U
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- Prior art keywords
- lng
- storage tank
- filling machines
- air
- flowmeter
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Abstract
The utility model provides a kind of new double fluid gauge LNG filling machines, for the LNG of LNG storage tank to be filled to LNG air containers；Including the liquid phase flowmeter, control valve and the liquid feeding rifle that are sequentially connected；The input of liquid phase flowmeter is connected with LNG storage tank, and the output end of liquid feeding rifle is connected with LNG air containers；Also include the gentle multi-phase flowmeter of return-air rifle being sequentially connected, the input of the return-air rifle is connected with LNG air containers, and the output end of gas phase flow rate meter is connected with LNG storage tank；Also include the electrometer controller for controlling fueling process and calculated flow rate, the electrometer controller is connected with LNG storage tank, liquid phase flowmeter, gas phase flow rate meter, control valve signal respectively.The new double fluid gauge LNG filling machines of the utility model, the residual air for being capable of achieving LNG air containers is reclaimed, and the function of measuring of residual air return-air amount is realized by Ultrasonic Wave Flowmeter, so as to not only reduce the internal pressure of LNG air containers, ensure that LNG is smoothly filled, and the filling measuring accuracy of LNG filling machines can be improved.
Description
Technical field
The utility model is related to filling machine technical field, more specifically to a kind of new double fluid gauge LNG aeratings
Machine.
Background technology
With continuing to develop for China's LNG automobile industries, LNG gas stations are continuously increased, the technology of LNG filling machines and application
Also in high speed development, the market demand is increasing, to the requirement more and more higher of LNG filling machine performances.
During work, the liquid feeding rifle of LNG filling machines inserts the inlet of vehicle-mounted LNG gas bombs so that LNG liquid is from filling machine
Input duct flows to liquid feeding rifle, subsequently into vehicle-mounted LNG gas bombs.Now, the LNG for having gasified in vehicle-mounted LNG gas bombs steams
Get angry so that internal pressure greatly, can not only largely effect on the smoothness of LNG filling, and can influence the meter of LNG filling machines filling
Accuracy of measurement.Therefore, the filling measuring accuracy of LNG filling machines how is improved, is that of the industry research of LNG filling at this stage is important
Problem.
It is natural gas by after purification, being heated up by compressing, in the work of mix refrigerant in addition, LNG is liquefied natural gas
Under, cooling is removed obtained from heat, then throttling expansion, -162 DEG C of temperature under normal pressure；Because LNG is natural gas in ultralow temperature
The product of cooling liquid under state, therefore easily gasify after it is heated.Therefore it is also to need solution at this stage to prevent LNG gasification
A major issue certainly.
Utility model content
The purpose of this utility model is to overcome shortcoming of the prior art with deficiency, there is provided a kind of new double fluid gauge
LNG filling machines, the LNG filling machines can realize the function that the residual air of LNG air containers is reclaimed and measured, so as to not only reduce LNG
The internal pressure of air container, it is ensured that LNG is smoothly filled, and the filling measuring accuracy of LNG filling machines can be improved.
In order to achieve the above object, the utility model is achieved by following technical proposals：A kind of new double fluid gauge
LNG filling machines, for the LNG of LNG storage tank to be filled to LNG air containers；It is characterized in that：Including the liquid phase stream being sequentially connected
Gauge, control valve and liquid feeding rifle；The input of the liquid phase flowmeter is connected with LNG storage tank, and output end and the LNG of liquid feeding rifle are stored up
Gas container is connected；Also include the gentle multi-phase flowmeter of return-air rifle being sequentially connected, input and the LNG air containers of the return-air rifle
Connection, the output end of gas phase flow rate meter is connected with LNG storage tank；Also include the electrometer for controlling fueling process and calculated flow rate
Controller, the electrometer controller is connected with LNG storage tank, liquid phase flowmeter, gas phase flow rate meter, control valve signal respectively.
In such scheme, the utility model is stored up with LNG air containers and LNG respectively by the gentle multi-phase flowmeter of return-air rifle
Tank is connected, then form a return flow line so that the residual air of LNG air containers is back to LNG storage tank, realizes LNG air containers
Residual air reclaim, so as to reduce the pressure inside LNG air containers, it is ensured that LNG can be filled smoothly.Meanwhile, can be by gas phase
Flow measurement measures the return-air amount of LNG air container residual air.In fueling process, the electronics controlling device of filling machine is automatically controlled and added
Gas process, and computing is carried out according to the flow signal that the gentle multi-phase flowmeter of liquid phase flowmeter is exported, LNG storage tank is filled into LNG storages
LNG mass in gas container is the difference of the variable of the gentle multi-phase flowmeter of variable of liquid phase flowmeter.Relative to traditional aerating
For machine only measures liquid volume added as the adding amount of filling machine, the utility model sets the gas phase being connected with electronics controlling device signal
Flowmeter, using the difference of liquid volume added and return-air amount as LNG filling machines adding amount, such that the measuring accuracy of filling machine
It is more accurate.
The liquid phase flowmeter is coriolis mass flowmeters.
The gas phase flow rate is calculated as Ultrasonic Wave Flowmeter.The utility model uses Ultrasonic Wave Flowmeter, from making
From the point of view of performance perspective, the accuracy temperature not by detected fluid of its metering, pressure, density and viscosity are influenceed, long-term smart
Degree good stability, using flexible and long lifespan, the advantages of easy to maintenance.And, it is fully able to meet the metering of LNG filling machines return-air
Requirement.From from the point of view of economy, its Costco Wholesale is extremely cheap for other flowmeters, and this point adds for LNG
The production domesticization development of mechanism of qi is particularly important.
The utility model also includes internal pre- cold loop；The pre- cold loop in inside is by LNG storage tank, liquid phase flowmeter and control
Valve processed is sequentially connected, and controls valve output end to be connected to be formed with LNG storage tank.
The utility model also includes outside pre- cold loop；The pre- cold loop in outside is by LNG storage tank, liquid phase flowmeter, control
Valve processed and liquid feeding rifle are sequentially connected, and the output end of liquid feeding rifle is connected to be formed with LNG storage tank.
The utility model realizes the pre-cooling cycle of filling machine by internal pre- cold loop and outside pre- cold loop：In order to add
The temperature (in the case of filling machine is idle, system pipeline temperature-visualized is normal temperature) of mechanism of qi system pipeline is reduced, and works as filling machine
Internal duct is hydraulically full and correlation behavior parameter reaches cooling and requires (line temperature reaches subzero 120 DEG C) precooling terminates afterwards
(whole pre-coo time about 2 to 3 minutes), such that it is able to avoid LNG media from vaporizing, prevents the generation of biphase gas and liquid flow.Whole
The liquid phase flowmeter amount of disregarding of individual precooling stage filling machine.
It is described to control valve for low temperature pneumatic emergency stop valve.
Pipeline between the LNG storage tank and liquid phase flowmeter is provided with bleeding device；The bleeding device is by stop valve
V1, safety valve SV1, pressure gauge PG, pressure sensor P and peripheral conduits connection composition；The pressure gauge PG and pressure sensing
Device P is connected with the pipeline between LNG storage tank and liquid phase flowmeter.If pipeline pressure is excessive can to realize superpressure by bleeding device
Diffuse.
Safety valve is provided between the gentle multi-phase flowmeter of LNG storage tank.
The utility model also includes the servicing unit with preset and printing function；The servicing unit and electronics controlling device
Signal is connected.
The new double fluid gauge LNG filling machines of the utility model are so work：
1st, the liquid feeding rifle of LNG filling machines is inserted on the systemic circulation muzzle of LNG filling machines, is pressed on filling machine keyboard
" precooling " key, filling machine starts precooling.The pre- cold loop of LNG liquid internals and outside pre- cold loop return to LNG storage tank, work as filling machine
Internal duct is hydraulically full and correlation behavior parameter reaches precooling after cooling is required and terminates, and this stage filling machine is not measured.
2nd, after precooling terminates, the liquid feeding rifle of LNG filling machines is inserted into vehicle-mounted LNG air containers inlet, the insertion of return-air rifle
LNG air container gas returning ports, press " aerating " key on LNG filling machine keyboards, and filling machine starts aerating.LNG liquid is from aerating
Machine input duct flows to liquid phase flowmeter, control valve and liquid feeding rifle, subsequently into vehicle-mounted LNG air containers；Vehicle-mounted LNG gas storage is held
LNG boil-off gas cooled via return airs rifle, gas phase flow rate meter and the return line gasified in device return to LNG storage tank.LNG filling machines plus
Fluence is the difference of the variable of liquid phase flowmeter and gas phase flow rate meter, and filling machine automatic calculating difference and can show.As automobile LNG
Gas bomb fills it up with filling machine autostop (can also shift to an earlier date manual shut-down or quota aerating) after LNG.
3rd, LNG filling machines first remove return-air rifle after shutting down from vehicle-mounted LNG air containers, then remove liquid feeding rifle, by liquid feeding rifle
The liquid feeding gun platform of LNG filling machines is inserted, aerating is completed.
In whole fueling process, the gentle multi-phase flowmeter of liquid phase flowmeter measure flow through LNG filling machines fluid density and
The isoparametric physical signalling of quality, is converted into electric impulse signal and is sent to electrometer controller, LNG filling machines by signal adapter
On pressure sensor and pressure gauge the working condition of LNG filling machines can be transferred to LNG aerating site servers, make it to whole
Individual fueling process is monitored, and is automatically performed aerating work.
Compared with prior art, the utility model has the following advantages that and beneficial effect：
1st, the new double fluid gauge LNG filling machines of the utility model, the residual air for being capable of achieving LNG air containers is reclaimed, and is passed through
Ultrasonic Wave Flowmeter realizes the function of measuring of residual air return-air amount, so as to not only reduce the internal pressure of LNG air containers, protects
Card LNG is smoothly filled, and can improve the filling measuring accuracy of LNG filling machines, while its Costco Wholesale is relative to other flows
It is extremely cheap for meter.
2nd, the utility model realizes the pre-cooling cycle of filling machine by internal pre- cold loop and outside pre- cold loop, so that can
To avoid LNG media from vaporizing, the generation of biphase gas and liquid flow is prevented.
Brief description of the drawings
Fig. 1 is the workflow diagram of the new double fluid gauge LNG filling machines of the utility model；
Fig. 2 is the fundamental diagram of the new double fluid gauge LNG filling machines of the utility model；
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As depicted in figs. 1 and 2, the new double fluid gauge LNG filling machines of the utility model, are for the LNG of LNG storage tank to be added
To LNG air containers, the LNG filling machines include the liquid phase flowmeter, the low temperature pneumatic emergency stop valve conduct that are sequentially connected to note
Control valve, liquid feeding flexible pipe and liquid feeding rifle, the return-air rifle being sequentially connected, the gentle multi-phase flowmeter of return-air flexible pipe, and for controlling to add
The electrometer controller of gas process and calculated flow rate；Wherein, the input of liquid phase flowmeter is connected with LNG storage tank, liquid feeding rifle
Output end is connected with LNG air containers, and the input of return-air rifle is connected with LNG air containers, the output end of gas phase flow rate meter with
LNG storage tank connect, electrometer controller respectively with LNG storage tank, liquid phase flowmeter, gas phase flow rate meter, control valve signal connection.
Liquid phase flowmeter of the present utility model is coriolis mass flowmeters, and gas phase flow rate is calculated as gas ultrasound wave current amount
Meter.The utility model uses Ultrasonic Wave Flowmeter, and from the point of view of performance angle, the accuracy of its metering does not receive measured stream
The influence of the temperature of body, pressure, density and viscosity, long-term accuracy good stability is easy to maintenance etc. excellent using flexible and long lifespan
Point.And, it is fully able to meet the requirement of LNG filling machines return-air metering.From from the point of view of economy, its Costco Wholesale is relative to it
Extremely cheap for its flowmeter, this point is particularly important for the production domesticization development of LNG filling machines.
The utility model also includes internal pre- cold loop and outside pre- cold loop, wherein, internal pre- cold loop is stored up by LNG
Tank, liquid phase flowmeter and control valve are sequentially connected, and control valve output end to be connected to be formed with LNG storage tank.And outside precooling is returned
Route LNG storage tank, liquid phase flowmeter, control valve, liquid feeding flexible pipe and liquid feeding rifle are sequentially connected, and the output end of liquid feeding rifle with
LNG storage tank connects to be formed.The utility model realizes the pre-cooling cycle of filling machine by internal pre- cold loop and outside pre- cold loop：
In order to the temperature of filling machine system pipeline (in the case of filling machine is idle, system pipeline temperature-visualized is normal temperature) is reduced,
After filling machine internal duct is hydraulically full and correlation behavior parameter reaches cooling requirement (line temperature reaches subzero 120 DEG C)
Precooling terminates (whole pre-coo time about 2 to 3 minutes), such that it is able to avoid LNG media from vaporizing, prevents the hair of biphase gas and liquid flow
It is raw.In the liquid phase flowmeter amount of disregarding of whole precooling stage filling machine.
Pipeline between LNG storage tank of the present utility model and liquid phase flowmeter is provided with bleeding device, the bleeding device by
Stop valve V1, safety valve SV1, pressure gauge PG, pressure sensor P and peripheral conduits connection composition, wherein, pressure gauge PG and pressure
Force snesor P is connected with the pipeline between LNG storage tank and liquid phase flowmeter.Can be by bleeding device reality if pipeline pressure is excessive
Existing superpressure is diffused.And it is provided with safety valve between the gentle multi-phase flowmeter of LNG storage tank.
The utility model also includes the servicing unit with preset and printing function, and the servicing unit is believed with electronics controlling device
Number connection.
The new double fluid gauge LNG filling machines of the utility model are so work：
1st, the liquid feeding rifle of LNG filling machines is inserted on the systemic circulation muzzle of LNG filling machines, is pressed on filling machine keyboard
" precooling " key, filling machine starts precooling.The pre- cold loop of LNG liquid internals and outside pre- cold loop return to LNG storage tank, work as filling machine
Internal duct is hydraulically full and correlation behavior parameter reaches precooling after cooling is required and terminates, and this stage filling machine is not measured.
2nd, after precooling terminates, the liquid feeding rifle of LNG filling machines is inserted into vehicle-mounted LNG air containers inlet, the insertion of return-air rifle
LNG air container gas returning ports, press " aerating " key on LNG filling machine keyboards, and filling machine starts aerating.LNG liquid is from aerating
Machine input duct flows to liquid phase flowmeter 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 rifles GN, return-air flexible pipe, gas phase flow rate meter M2 and the return-air gasified in vehicle-mounted LNG air containers
Pipeline returns to LNG storage tank.The adding amount of LNG filling machines is the difference of the variable of liquid phase flowmeter M1 and gas phase flow rate meter M2, plus
Mechanism of qi automatic calculating difference and can show.Filling machine autostop (also can be manual in advance after automobile LNG gas bombs fill it up with LNG
Shut down or quota aerating).
3rd, LNG filling machines first remove return-air rifle GN after shutting down from vehicle-mounted LNG air containers, then remove liquid feeding rifle LN, will add
Liquid rifle LN inserts the liquid feeding gun platform LNK of LNG filling machines, completes aerating.
In whole fueling process, the gentle multi-phase flowmeter M2 of liquid phase flowmeter M1 measure flow through LNG filling machines fluid it is close
Degree and the isoparametric physical signalling of quality, are converted into electric impulse signal and are sent to electrometer controller by signal adapter, and LNG adds
The working condition of LNG filling machines can be transferred to LNG aerating site servers by pressure sensor P and pressure gauge PG on mechanism of qi,
It is monitored whole fueling process, be automatically performed aerating work.
Above-described embodiment is the utility model preferably implementation method, but implementation method of the present utility model is not by above-mentioned
The limitation of embodiment, it is other it is any without departing from the change made under Spirit Essence of the present utility model and principle, modify, replace
Generation, combination, simplification, should be equivalent substitute mode, be included within protection domain of the present utility model.
Claims (9)
1. a kind of new double fluid gauge LNG filling machines, for the LNG of LNG storage tank to be filled to LNG air containers；Its feature exists
In：Including the liquid phase flowmeter, control valve and the liquid feeding rifle that are sequentially connected；The input of the liquid phase flowmeter connects with LNG storage tank
Connect, the output end of liquid feeding rifle is connected with LNG air containers；Also include the gentle multi-phase flowmeter of return-air rifle being sequentially connected, described time
The input of air gun is connected with LNG air containers, and the output end of gas phase flow rate meter is connected with LNG storage tank；Also include for controlling
The electrometer controller of fueling process and calculated flow rate, the electrometer controller respectively with LNG storage tank, liquid phase flowmeter, gas
Multi-phase flowmeter, control valve signal connection.
2. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：The liquid phase flowmeter is section
Li Aoli mass flowmenters.
3. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：The gas phase flow rate is calculated as gas
Body ultrasonic flowmeter.
4. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：Also include internal pre- cold loop；
The pre- cold loop in inside is sequentially connected by LNG storage tank, liquid phase flowmeter and control valve, and controls valve output end to be stored up with LNG
Tank connects to be formed.
5. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：Also include outside pre- cold loop；
The pre- cold loop in outside by LNG storage tank, liquid phase flowmeter, control valve and liquid feeding rifle be sequentially connected, and liquid feeding rifle output
End is connected to be formed with LNG storage tank.
6. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：It is described to control valve for low temperature gas
Dynamic quick action emergency valve.
7. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：The LNG storage tank and liquid phase stream
Pipeline between gauge is provided with bleeding device；The bleeding device is passed by stop valve V1, safety valve SV1, pressure gauge PG, pressure
Sensor P and peripheral conduits connection composition；The pressure gauge PG and pressure sensor P with LNG storage tank and liquid phase flowmeter it
Between pipeline connection.
8. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：The LNG storage tank and gas phase stream
Safety valve is provided between gauge.
9. new double fluid gauge LNG filling machines according to claim 1, it is characterised in that：Also include having preset and beat
Print the servicing unit of function；The servicing unit is connected with electronics controlling device signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040506.6U CN206206998U (en) | 2016-09-06 | 2016-09-06 | A kind of new double fluid gauge LNG filling machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621040506.6U CN206206998U (en) | 2016-09-06 | 2016-09-06 | A kind of new double fluid gauge LNG filling machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206998U true CN206206998U (en) | 2017-05-31 |
Family
ID=58760386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621040506.6U Expired - Fee Related CN206206998U (en) | 2016-09-06 | 2016-09-06 | A kind of new double fluid gauge LNG filling machines |
Country Status (1)
| Country | Link |
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| CN (1) | CN206206998U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287203A (en) * | 2016-09-06 | 2017-01-04 | 华南理工大学 | A kind of novel double fluid gauge LNG filling machine |
| CN110748791A (en) * | 2019-10-17 | 2020-02-04 | 深圳中集智能科技有限公司 | Control method of LNG filling equipment, filling process and filling equipment |
-
2016
- 2016-09-06 CN CN201621040506.6U patent/CN206206998U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287203A (en) * | 2016-09-06 | 2017-01-04 | 华南理工大学 | A kind of novel double fluid gauge LNG filling machine |
| CN110748791A (en) * | 2019-10-17 | 2020-02-04 | 深圳中集智能科技有限公司 | Control method of LNG filling equipment, filling process and filling equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170531 Termination date: 20190906 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |