CN104121477B - Automobile-used LNG gas tank control system and method - Google Patents
Automobile-used LNG gas tank control system and method Download PDFInfo
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- CN104121477B CN104121477B CN201410341376.9A CN201410341376A CN104121477B CN 104121477 B CN104121477 B CN 104121477B CN 201410341376 A CN201410341376 A CN 201410341376A CN 104121477 B CN104121477 B CN 104121477B
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- angle
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- inclination
- obliquity sensor
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Abstract
The invention discloses automobile-used LNG gas tank control system and method, belong to Liquefied Natural Gas fuel supply field, this system includes the gas tank equipped with LNG, also include the obliquity sensor for measuring described gas tank relative to plane of reference angle of inclination, and carry out the electromagnetic valve of valve opening and closing according to the dip angle signal of described obliquity sensor, control electromagnetic valve to open valve release natural gas when described dip angle signal exceedes early warning angle at angle of inclination.The present invention can discharge natural gas in time in vehicle run-off the straight or when toppling over makes gas tank reduce pressure to reduce the possibility of gas tank blast.
Description
Technical field
The present invention relates to Liquefied Natural Gas fuel feedway, particularly automobile-used LNG gas tank control system and method.
Background technology
Liquefied Natural Gas fuel low cost, most of in composition is methane, and after burning, harmful components are less, in full-sized car
Middle use is relatively broad.Liquefied natural gas is by compression and refrigerating work procedure, gaseous state shape natural gas to be changed into after liquid to carry out
Accumulating and use, typically in the fuel-device of automobile, compression volume is than for 625：1.Natural gas has necessarily as fuel
Danger, is particularly stored in the liquified natural gas in gas tank, when the vehicle carrying this gas tank is handed over cryogenic high pressure compression
So toppling over, ambient temperature may steeply rise moment interpreter or gas tank is it may happen that leak, and this probability all can
Cause gas tank blast, cause casualties or traffic paralysis is it should take the precautionary measures in time after vehicle is toppled over.
Content of the invention
It is an object of the invention to provide a kind of automobile-used LNG gas tank control system and method, can in vehicle run-off the straight or
When person topples over, release natural gas makes gas tank reduce pressure to reduce the possibility of gas tank blast in time.
In order to solve above-mentioned technical problem, the present invention adopts technical scheme 1：A kind of automobile-used LNG gas tank control system, including
Equipped with the gas tank of LNG, also include the obliquity sensor for measuring described gas tank relative to plane of reference angle of inclination, and according to institute
The dip angle signal stating obliquity sensor carries out the electromagnetic valve of valve opening and closing, and described dip angle signal exceedes early warning angle at angle of inclination
When control electromagnetic valve open valve release natural gas.
Preferably, the angle of inclination that described obliquity sensor measured is received and by itself and early warning angle changing rate by processor
Described dip angle signal is exported after analysis.
Preferably, described obliquity sensor includes the first obliquity sensor of normality and the second controlled obliquity sensor,
Described first obliquity sensor measures the first angle of inclination of gas tank and transmits it to processor, and the first angle of inclination shows inclines
Oblique then processor wakes up the second obliquity sensor, and the second obliquity sensor measures the second angle of inclination of gas tank and transmits it to
Processor, the second angle of inclination display tilts then processor output dip angle signal and controls electromagnetic valve to open valve.
Preferably, also include one for positioning and exporting geographical position to the location equipment of processor, one with processor even
Connect automatically accesses subzone network the autoalarm dialed the police emergency number according to dip angle signal, and number set up by a phone
According to the sound broadcasting device that after connecting, report comprises geographical location information automatically.
Preferably, described processor includes radio receiving transmitting module and/or wired connection interface, and this system also includes and institute
State that processor is wireless and/or the display device for mounting on vehicle of wire communication.
Preferably, described obliquity sensor is integrated in transmitter, and described transmitter is provided with CANOPEN interface as inclining
Angle transducer communication terminal, this system also includes the car-mounted display dress with described obliquity sensor by CANOPEN interface communication
Put.
Preferably, described obliquity sensor is zero relative to the inclination numerical value of the plane of reference in an initial condition, skewed
It is the positive number all being calculated with angle absolute value relative to the inclination numerical value of the plane of reference under state, the described plane of reference is horizontal plane.
In order to solve above-mentioned technical problem, the present invention also adopts technical scheme 2：A kind of automobile-used LNG gas tank control method, bag
Include following steps：
A. the first obliquity sensor records the angle of inclination A1 of gas tank, and processor is obtained compared it with early warning angle S0 after
Fiducial value C1, wherein C1=A1-S0；
B. when C1 is more than 0, obtain the second obliquity sensor and record the angle of inclination B1 of gas tank, processor is by itself and early warning
Angle S0 obtains fiducial value C2, wherein C2=B1-S0 more afterwards；
C., when C2 is more than 0, processor output dip angle signal controls electromagnetic valve to open valve release natural gas.
Preferably, further comprising the steps of：
D. geographical position residing for location equipment acquisition, and it is temporary to transmit it to processor；
E. processor triggering autoalarm is dialed the police emergency number, and wherein, described autoalarm automatically accesses
Place subzone network；
F. sound broadcasting device automatically obtains the geographical position in processor after data cube computation set up by phone and reports bag
Information containing geographical position.
Preferably, in step C, dip angle signal is transferred to car-mounted display by wiredly and/or wirelessly mode by processor
Device.
After technique scheme, the present invention compared with prior art has following outstanding advantages：The present invention is using inclining
Tiltedly sensor is combined with electromagnetic valve, by measuring the angle of inclination of LNG gas tank, and when angle of inclination exceedes early warning angle, leads to
Crossing corresponding dip angle signal controls electromagnetic valve to open valve to discharge natural gas, and natural gas evacuated by the gas tank after venting, mediates
Gas tank internal high pressure, it is to avoid possible get into an accident causes the danger of scene blast.
Brief description
Fig. 1 is the schematic diagram of the automobile-used LNG gas tank control system of the embodiment of the present invention one；
Fig. 2 is the schematic diagram of the automobile-used LNG gas tank control system of the embodiment of the present invention two；
Fig. 3 is the flow chart of the automobile-used LNG gas tank control method of the embodiment of the present invention.
Specific embodiment
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Elaborate a lot of details in order to fully understand the present invention in the following description.But the present invention can be with
Much it is different from alternate manner described here to implement, those skilled in the art can be in the situation without prejudice to intension of the present invention
Under do similar popularization, therefore the present invention is not embodied as and concrete accompanying drawing is limited by following public.
The present invention is not limited to the gas tank starting offer gas fuel for automobile engine, is equally applicable to transport
The big air accumulator of liquid natural gas, described automobile is, for example, heavy kilocalorie, bus, engineering truck, loader etc., but not limits
Property condition it will be understood that it is suitable for other be used LNG gas tank as fuel supply or transport LNG movement set
Apply, here is only by using automobile widest in area as an example.
Embodiment one
Fig. 1 shows the automobile-used LNG gas tank control system of the present embodiment, including equipped with the gas tank 1 of LNG, obliquity sensor 2
And electromagnetic valve 3.Wherein, obliquity sensor 3 is fixedly connected on gas tank 1, exemplary, and gas tank 1 is used for supplying sky to electromotor Pw
So gas, so that MOVING STRUCTURE such as car engine travels, in the present embodiment, measures described gas tank 1 using an obliquity sensor 2
Plane of reference angle of inclination relatively, electromagnetic valve 3 carries out valve opening and closing thus controlling sky according to the dip angle signal of described obliquity sensor 1
So release of gas.
In the present embodiment, described obliquity sensor 2 is integrated in transmitter 4, and transmitter 4 measures to obliquity sensor 2
Angle of inclination carries out pick-up output dip angle signal, specifically, pre-sets an early warning angle, will incline in transmitter 4 in transmitter 4
The angle of inclination of angle transducer 2 and early warning angle changing rate, when there is a certain degree of inclination in angle of inclination display vehicle, example
As when angle of inclination is more than 80 °, described dip angle signal controls electromagnetic valve 3 to open valve release natural gas, it is to avoid possible danger
Dangerous accident occurs.Electromagnetic valve 3 be the electromagnetic force being produced after powered up by solenoid on closure member so that electromagnetic valve 3
Valve open, after power-off, electromagnetic force disappearance closure member again by valve closing, believed by the inclination angle of obliquity sensor by its electric break-make
Number control, when dip angle signal display angle of inclination be more than early warning temperature when, electromagnetic valve 3 open valve venting.Further, if
The natural gas that electromagnetic valve 3 is sent is not burned off to after in the air or is not dispelled in time, and natural gas tires out in atmosphere
There is the danger being detonated, for preventing natural gas from not burnt in time or packing densities are excessive, described electricity after amassing certain density
An air-cone 5 is set, air-cone 5 can make the fuel gas chemical combustion of outlet nozzle, and natural gas is in quilt at the outlet nozzle of magnet valve 3
Oxidized in time after release, the natural gas of big density just can be prevented to be ignited blast, for making combustion of natural gas more abundant, electromagnetic valve
The extended line of 3 outlet nozzles is intersected vertically (in figure is not illustrated) with the extended line of air-cone 5 spout.
Transmitter 4 can make the dip angle signal of obliquity sensor 2 standardize, and equally can gather for measuring gas tank 1 liquid
Their pick-ups are simultaneously exported by the signal of the liquidometer of position and pressure, piezometer (not shown) etc., and playing will be integrated for signal defeated
The effect going out.
With continued reference to Fig. 1, in the present embodiment, automobile-used LNG gas tank control system also includes display device for mounting on vehicle, and (in figure is not shown
Go out), described transmitter 4 is provided with CANOPEN, and (a kind of framework is at control area net（CAN） road (Control Area Network, CAN)
On high-rise communications protocol) as obliquity sensor 2 communication terminal, display device for mounting on vehicle is led to interface with described obliquity sensor 2
Cross CANOPEN interface communication.
Different from the no security protection measure mode only pressure in gas tank 1 and liquid level being measured in prior art, this reality
Apply the angle of inclination that example measures gas tank 1 by obliquity sensor 2, toppled over predicting vehicle whether to suffer a car accident, according to inclination
Natural gas is released, tool before accident leads to by the valve switch of angular surveying duty control solenoid valve 3 from the outlet nozzle of electromagnetic valve 3
Body is individually, specially to open up a gas outlet 11, gas outlet 11 in gas tank 1 upper position (gas tank 1 position that gas-phase space is located)
It is connected by conveyance conduit 6 with electromagnetic valve 3.
In the examples below, same part, device, module etc. will be illustrated with being same as labelling in Fig. 1.
Embodiment two
Fig. 2 shows the automobile-used LNG gas tank control system of the present embodiment, including equipped with the gas tank 1 of LNG, obliquity sensor,
Electromagnetic valve 3 and processor 4, receive the angle of inclination that obliquity sensor measured and by itself and early warning angle ratio by processor 4
Described dip angle signal is exported, wherein, obliquity sensor is fixedly connected on gas tank 1, and obliquity sensor includes normality after relatively analyzing
First obliquity sensor 21 and the second controlled obliquity sensor 22, herein, " normality " means to be in normal work, can survey in real time
Measure inclination angle and export the state at angle of inclination, " controlled " means to be in stand-by operation, measured according to the notice of processor and incline
Angle simultaneously exports the state at angle of inclination, or be in normal work, inclination angle can be measured in real time but processor not active obtaining its
The state at angle of inclination, considers for energy consumption saving, can make the second obliquity sensor 22 standby (work of awaiting a favorable opportunity).
In the present embodiment, described first obliquity sensor 21 measures the angle of inclination of gas tank 1 first, and angle of inclination is passed
Transport to processor 4, it is analyzed by processor 4 with early warning angle changing rate, if angle of inclination display tilts, for example angle of inclination is more than
When 80 °, then processor 4 wakes up the second obliquity sensor 22 it should be noted that " wake-up " herein corresponds to the second inclination angle
" controlled " of sensor 22 is it is intended that processor 4 notifies to be in the second obliquity sensor 22 work measurement inclination angle of holding state
Degree, or, the second obliquity sensor 22 is in running order and has recorded angle of inclination and processor 4 now goes to obtain this and inclines
The numerical value of rake angle, the second obliquity sensor 22 transmits the angle of inclination of the gas tank 1 of mensure to processor 4, when the second inclination angle
When the angle of inclination display that sensor 22 is surveyed tilts, then processor 4 exports corresponding dip angle signal control electromagnetic valve 3 and opens valve
Door.Second obliquity sensor 22 measures angle of inclination and again here as verification by way of processor 4 is analyzed, and prevents
First obliquity sensor 21 transmits false information (including sensor faults itself or external condition interference etc.), in the present embodiment,
In the case that the surveyed data display of the first obliquity sensor 21 tilts, only just need the data of the second obliquity sensor 22 it should
Understand, it would however also be possible to employ the second obliquity sensor 22 is similarly in normality.
For excluding fail- safe hidden danger further, need the timely process to the scene of the accident, for avoiding the unmanned report in the scene of the accident
The alert or scene of the accident is the situation on remote unmanned ground, and the present embodiment additionally provides the device of automatic dialing alarm call.Specifically
, with continued reference to Fig. 2, automobile-used LNG gas tank control system also includes one for positioning and exporting geographical position determining to processor
Position equipment 7, such as gps satellite location equipment, one be connected with processor 4 automatically access subzone network and dialled according to dip angle signal
Beat the autoalarm 8 of alarm call, subzone network is the concept in mobile communication system, because automobile is in moving process
Handover can be needed through different cells between two cells, autoalarm 8 is when entering the cell of mobile network
Automatically access the network in cell, so as to dial the police emergency number according to dip angle signal, and after data cube computation set up by a phone
Automatically report the sound broadcasting device 9 comprising geographical location information, the voice messaging of sound broadcasting device 9 can pre-set, its
Middle geographical location information is embedded after being provided by location equipment 7.
Further, described processor 4 includes radio receiving transmitting module and/or wired connection interface, automobile-used LNG gas tank control
System processed also includes wireless with described processor and/or wire communication display device for mounting on vehicle (not shown), radio communication
Mode can adopt Bluetooth short distance high-speed data communication.
Different from the no security protection measure mode only pressure in gas tank 1 and liquid level being measured in prior art, this reality
Apply example and pass through the angle of inclination that two obliquity sensors successively measure gas tank, toppled over, root with predicting vehicle whether to suffer a car accident
After processing according to processor 4, the dip angle signal of output controls the valve switch of electromagnetic valve 3, by natural gas from electromagnetism before accident leads to
The outlet nozzle of valve 3 is released, specifically gas tank upper position (the gas tank position that gas-phase space is located) individually, specially open up one and go out
QI KOU 11, gas outlet 11 is connected by conveyance conduit 6 with electromagnetic valve 3.Autoalarm 8 in the present embodiment has used movement
Communication component is reported to the police, timely and convenient, and mobile communication is the development trend of the communications field, and regenerates continuous, applies to
All trades and professions are its certain trend.
In an embodiment of the present invention, described obliquity sensor is in an initial condition relative to the inclination numerical value of the plane of reference
It is zero, be the positive number all being calculated with angle absolute value relative to the inclination numerical value of the plane of reference under heeling condition, the described plane of reference
For horizontal plane.
In Fig. 1, Fig. 2, automobile-used LNG gas tank control system also includes liquefied natural gas is delivered to the liquid feed valve of gas tank 1
C1, the air throttle E1 of control gas inlet being sequentially connected, the liquid valve V2 controlling liquid output, can be turned off thus stoping
Liquefied natural gas enters the liquid excess flow valve E2 of vapor lamp, and is located on vapor lamp and connects the carburator of liquid excess flow valve E2
The input of Pr, wherein air throttle E1 connects to the gas-phase space of gas tank 1, and in order to prevent hypertonia in gas tank 1, gas phase is empty
Between be also connected with main safety valve SV1 simultaneously, when pressure exceedes safety value, start main safety valve SV1, prevent main safety valve SV1
Failure, sets secondary relief valve SV2 simultaneously, when main safety valve SV1 cannot work and pressure exceedes safety value, starts secondary relief valve
SV2, additionally sets the pressure balanced atmospheric valve V1 maintaining gas tank 1；In order to prevent liquefied natural gas from flowing back, air throttle E1's
It is also connected with a check-valves C2 between the liquid Space of outfan and gas tank 1.
Fig. 3 shows the automobile-used LNG gas tank control method of the embodiment of the present invention, and its step includes：
A. the first obliquity sensor records the angle of inclination A1 of gas tank, and processor is obtained compared it with early warning angle S0 after
Fiducial value C1, wherein C1=A1-S0；
B. when C1 is more than 0, obtain the second obliquity sensor and record the angle of inclination B1 of gas tank, processor is by itself and early warning
Angle S0 obtains fiducial value C2, wherein C2=B1-S0 more afterwards；
C., when C2 is more than 0, processor output dip angle signal controls electromagnetic valve to open valve release natural gas.
In step A to C, the first obliquity sensor keeps measurement normality, and processor can obtain its surveyed inclination angle in real time
Degrees of data, and by data and early warning angle changing rate, early warning angle is the data of setting, when angle of inclination is more than early warning angle
When, processor notifies the second obliquity sensor and obtains the angle of inclination that it is surveyed as verifying the surveyed number of the first obliquity sensor
Truly whether according to, when the angle of inclination that the second obliquity sensor is surveyed is also greater than early warning angle, then vehicle is toppled over,
Processor exports corresponding dip angle signal thus controlling electromagnetic valve to open valve release natural gas, prevents liquid natural in gas tank in time
Gas gasification expands high pressure makes gas tank that the danger of blast to occur.
In order that scene is processed as early as possible keeping order, the automobile-used LNG gas tank control method of the embodiment of the present invention is also wrapped
Include following steps：
D. geographical position residing for location equipment acquisition, and it is temporary to transmit it to processor；
E. processor triggering autoalarm is dialed the police emergency number, and wherein, described autoalarm automatically accesses
Place subzone network；
F. sound broadcasting device automatically obtains the geographical position in processor after data cube computation set up by phone and reports bag
Information containing geographical position.
In step D to E, location equipment provides geographical position, autoalarm access to communication networks automatic dialing
Alarm call, sound broadcasting device obtains geographical position and is reported after closing of the circuit, for example, except general greeting, geographical
Position report capable of circulation.
Optionally, in step C, dip angle signal is transferred to car-mounted display by wiredly and/or wirelessly mode by processor
Device.
The present invention is combined with electromagnetic valve using inclination sensor, by measuring the angle of inclination of LNG gas tank, and at inclination angle
When degree exceedes early warning angle, control electromagnetic valve to open valve by corresponding dip angle signal and discharge natural gas, the gas after venting
Natural gas evacuated by tank, mediated gas tank internal high pressure, it is to avoid possible getting into an accident causes the danger of scene blast.
Although the present invention is open as above with preferred embodiment, it is not for limiting claim, any this area
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore the present invention
Protection domain should be defined by the scope that the claims in the present invention are defined.
Claims (1)
1. a kind of automobile-used LNG gas tank control system, including the gas tank equipped with LNG it is characterised in that also including described for measuring
Gas tank is relative to the obliquity sensor at plane of reference angle of inclination, and carries out valve according to the dip angle signal of described obliquity sensor and open
The electromagnetic valve closing, controls electromagnetic valve to open valve release natural gas when described dip angle signal exceedes early warning angle at angle of inclination,
By processor receive the angle of inclination that described obliquity sensor measured and will its with the analysis of early warning angle changing rate after output described
Dip angle signal；Described obliquity sensor includes the first obliquity sensor of normality and the second controlled obliquity sensor, and described
One obliquity sensor measures the first angle of inclination of gas tank and transmits it to processor, and the first angle of inclination display tilts then to locate
Reason device wakes up the second obliquity sensor, and the second obliquity sensor measures the second angle of inclination of gas tank and transmits it to process
Device, the second angle of inclination display tilts then processor output dip angle signal and controls electromagnetic valve to open valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341376.9A CN104121477B (en) | 2014-07-17 | 2014-07-17 | Automobile-used LNG gas tank control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341376.9A CN104121477B (en) | 2014-07-17 | 2014-07-17 | Automobile-used LNG gas tank control system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104121477A CN104121477A (en) | 2014-10-29 |
| CN104121477B true CN104121477B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410341376.9A Expired - Fee Related CN104121477B (en) | 2014-07-17 | 2014-07-17 | Automobile-used LNG gas tank control system and method |
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| CN (1) | CN104121477B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500974A (en) * | 2014-12-02 | 2015-04-08 | 上海雷尼威尔技术有限公司 | Remote monitoring system for automotive LNG cylinders |
| CN105240682A (en) * | 2015-10-21 | 2016-01-13 | 谢玉勋 | Dangerous chemical loading and unloading system |
| CN109398602B (en) * | 2017-08-15 | 2021-09-10 | 上海船厂船舶有限公司 | Method for installing high-pressure air bottle assembly for drilling ship |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005133735A (en) * | 2003-10-28 | 2005-05-26 | Chugoku Electric Power Co Inc:The | Bulk container for supply of lng |
| JP2006160287A (en) * | 2004-12-03 | 2006-06-22 | Nippon Sharyo Seizo Kaisha Ltd | Tank truck and mass control system thereof |
| EP1672122A1 (en) * | 2004-12-17 | 2006-06-21 | Leica Geosystems AG | Method and apparatus for controlling a road working machine |
| JP4941750B2 (en) * | 2007-08-01 | 2012-05-30 | トヨタ自動車株式会社 | Gas safety relief system |
| CN102621966B (en) * | 2012-04-06 | 2014-04-23 | 家通电子商务（大连）有限公司 | Dangerous chemical storage and transportation danger early warning and assessment device and pre-warning system |
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