CN104121477A - Automotive LNG tank control system and method - Google Patents
Automotive LNG tank control system and method Download PDFInfo
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- CN104121477A CN104121477A CN201410341376.9A CN201410341376A CN104121477A CN 104121477 A CN104121477 A CN 104121477A CN 201410341376 A CN201410341376 A CN 201410341376A CN 104121477 A CN104121477 A CN 104121477A
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Abstract
The invention discloses an automotive LNG tank control system and method, and belongs to the field of LNG fuel supplying. The system comprises a gas tank with LNG and further comprises a tilt angle sensor and an electromagnetic valve, wherein the tilt angle sensor is used for measuring a tilt angle, relative to a reference face, of the gas tank, the electromagnetic valve is opened and closed according to a tilt angle signal of the tilt angle sensor, and when the tilt angle exceeds a warning angle, the tilt angle signal controls the electromagnetic valve to be opened and closed to release natural gas. According to the system and method, when the vehicle tilts or topples over, the natural gas can be released in time, and therefore the pressure of the gas tank is reduced, and the possibility of the gas tank explosion is reduced.
Description
Technical field
The present invention relates to Liquefied Natural Gas fuel supplier, concrete is automobile-used LNG gas tank control system and method.
Background technique
Liquefied Natural Gas fuel cost is low, and in composition, major part is methane, and after burning, harmful components are less, uses comparatively extensive in full-sized car.LNG Liquefied natural gas is carried out accumulating and use after changing gaseous state shape rock gas into liquid state by compression and refrigerating work procedure, and in the fuel-device of generally using at automobile, compression volume ratio is 625:1.Rock gas has certain risk as fuel, particularly with cryogenic high pressure compression, be stored in the liquified natural gas in gas tank, when carrying the vehicle generation traffic accident of this gas tank, topple over, ambient temperature may sharply rise moment or gas tank may leak, this possibility all can cause gas tank blast, cause casualties or traffic paralysis, should after vehicle is toppled over, take in time the counter measure.
Summary of the invention
The object of this invention is to provide a kind of automobile-used LNG gas tank control system and method, in the time of can or toppling in vehicle run-off the straight, discharge in time rock gas and make gas tank reduce pressure to reduce the possibility of gas tank blast.
In order to solve the problems of the technologies described above, the present invention adopts technological scheme 1: a kind of automobile-used LNG gas tank control system, comprise the gas tank that LNG is housed, also comprise for measuring the dip sensor of described gas tank relative reference face tilt angle, and the solenoid valve that carries out valve opening and closing according to the dip angle signal of described dip sensor, when described dip angle signal surpasses early warning angle at angle of inclination, control solenoid valve and open valve release rock gas.
Preferably, by processor, receive angle of inclination that described dip sensor measures and export described dip angle signal by after itself and the comparative analysis of early warning angle.
Preferably, described dip sensor comprises the first dip sensor of normality and the second controlled dip sensor, described the first dip sensor is measured the first angle of inclination of gas tank and transmits it to processor, the first angle of inclination shows to tilt that processor wakes the second dip sensor up, the second dip sensor is measured the second angle of inclination of gas tank and is transmitted it to processor, and the second angle of inclination shows to tilt that processor output dip angle signal control solenoid valve is opened valve.
Preferably, also comprise that one for locating and exporting geographical position to the positioning equipment of processor, the one automatic access SAN Small Area Network being connected with processor the autoalarm of dialing the police emergency number according to dip angle signal, and a phone is set up the sound broadcasting device that after data connect, report comprises geographical location information automatically.
Preferably, described processor comprises radio receiving transmitting module and/or wired connection interface, and this system also comprises the vehicle display device of and/or wire communication wireless with described processor.
Preferably, described dip sensor is integrated in transmitter, and described transmitter is provided with CANOPEN interface as dip sensor communication terminal, and this system also comprises with described dip sensor by the vehicle display device of CANOPEN interface communication.
Preferably, the inclination numerical value of described dip sensor relative reference face under original state is zero, and under heeling condition, the inclination numerical value of relative reference face is the positive number all calculating with angle absolute value, and described reference surface is horizontal plane.
In order to solve the problems of the technologies described above, the present invention also adopts technological scheme 2: a kind of automobile-used LNG gas tank controlling method, comprises the following steps:
A. the first dip sensor records the angle of inclination A1 of gas tank, and processor obtains comparison value C1 by after itself and early warning angle S0, wherein C1=A1-S0;
B. when C1 is greater than 0, obtain the angle of inclination B1 that the second dip sensor records gas tank, processor obtains comparison value C2 by after itself and early warning angle S0, wherein C2=B1-S0;
C. when C2 is greater than 0, processor output dip angle signal is controlled solenoid valve and is opened valve release rock gas.
Preferably, further comprising the steps of:
D. positioning equipment obtains geographical position of living in, and it is temporary to transmit it to processor;
E. processor triggering autoalarm is dialed the police emergency number, and wherein, described autoalarm accesses place SAN Small Area Network automatically;
F. the information that comprises geographical position is also reported in sound broadcasting device geographical position in automatic acquisition processor after phone is set up data connection.
Preferably, in step C, processor by dip angle signal by wired and/or wireless way for transmitting to vehicle display device.
Adopt after technique scheme, the present invention compared with prior art has following outstanding advantages: the present invention adopts inclination sensor to be combined with solenoid valve, by measuring the angle of inclination of LNG gas tank, and while surpassing early warning angle at angle of inclination, by corresponding dip angle signal, control solenoid valve and open valve to discharge rock gas, gas tank after venting has been evacuated rock gas, has mediated gas tank internal high pressure, has avoided possible getting into an accident to cause the danger of on-the-spot blast.
Accompanying drawing explanation
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 controlling method of the embodiment of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
A lot of details have been set forth in the following description so that fully understand the present invention.But the present invention can implement to be much different from alternate manner described here, and those skilled in the art can do similar popularization without prejudice to intension of the present invention in the situation that, so the present invention is not subject to the restriction of following public concrete enforcement and concrete accompanying drawing.
The present invention is not limited to the gas tank that starts to provide gas fuel for motor car engine, be equally applicable to transport the large gas holder of liquid natural gas, described automobile is such as being heavy kilocalorie, bus, engineering truck, loader etc., but be not restrictive condition, be appreciated that, the present invention is also applicable to other and uses LNG gas tank as fuel, to supply with or the movement equipment of transportation LNG, this only by the widest automobile of using scope as example.
Embodiment one
Fig. 1 shows the automobile-used LNG gas tank control system of the present embodiment, comprises gas tank 1, dip sensor 2 and solenoid valve 3 that LNG is housed.Wherein, dip sensor 3 is fixedly connected on gas tank 1, exemplary, gas tank 1 for to motor Pw for rock gas so that movement equipment for example car engine travel, in the present embodiment, adopt a dip sensor 2 to measure described gas tank 1 relative reference face tilt angle, thereby solenoid valve 3 carry out according to the dip angle signal of described dip sensor 1 release that valve opening and closing is controlled rock gas.
In the present embodiment, described dip sensor 2 is integrated in transmitter 4, the angle of inclination that 4 pairs of dip sensors of transmitter 2 are measured becomes send output dip angle signal, concrete, in transmitter 4, set in advance an early warning angle, in transmitter 4 by the angle of inclination of dip sensor 2 and the comparison of early warning angle, when angle of inclination shows that inclination has to a certain degree occurred vehicle, for example, when angle of inclination is greater than 80 °, described dip angle signal is controlled solenoid valve 3 and is opened valve release rock gas, avoids possible peril to occur.Solenoid valve 3 be the electromagnetic force that produces afterwards in energising by electromagnetic coil on closure member so that the valve open of solenoid valve 3, after power-off, electromagnetic force disappearance closure member is again by valve closing, its electric break-make is controlled by the dip angle signal of dip sensor, when dip angle signal shows that angle of inclination is greater than early warning temperature, solenoid valve 3 is opened valve venting.Further, if the rock gas that solenoid valve 3 is sent is to not having after in air burnedly fall or do not dispelled in time, rock gas has the danger being detonated be accumulated to certain density in air after, for preventing that rock gas from not burnt in time or to build up density excessive, the outlet nozzle place of described solenoid valve 3 establishes an air-cone 5, air-cone 5 can make the fuel gas chemical combustion of outlet nozzle, rock gas is oxidized in time after being released, the rock gas that just can the prevent large density blast of being ignited, for making combustion of natural gas more abundant, the elongation line of the elongation line of solenoid valve 3 outlet nozzles and air-cone 5 spouts intersect vertically (meaning not shown in the figures).
Transmitter 4 can make the dip angle signal standardization of dip sensor 2, can gather equally the signal of level meter for measuring gas tank 1 liquid level and pressure, pressure meter (not shown) etc. and their are become and send output, playing the effect of the integrated output of signal.
Continuation is referring to Fig. 1, in the present embodiment, automobile-used LNG gas tank control system also comprises vehicle display device (not shown), described transmitter 4 is provided with CANOPEN, and (a kind of framework is (Control Area Network on control area net（CAN） road, CAN) the high-rise communications protocol on) interface is as dip sensor 2 communication terminal, and vehicle display device and described dip sensor 2 are by CANOPEN interface communication.
Only be different from prior art gas tank 1 internal pressure and liquid level are measured without security protection measure mode, the present embodiment is measured the angle of inclination of gas tank 1 by dip sensor 2, with prediction vehicle, whether suffer a car accident and topple over, according to the valve switch of angle of bank measurement duty control solenoid valve 3, before accident leads to, rock gas is emitted from the outlet nozzle of solenoid valve 3, specifically at gas tank 1 upper position (gas tank 1 position at gas-phase space place), separately, specially offer an air outlet 11, air outlet 11 is connected by conveyance conduit 6 with solenoid valve 3.
In following examples, same parts, device, module etc. will be illustrated to be same as mark in Fig. 1.
Embodiment two
Fig. 2 shows the automobile-used LNG gas tank control system of the present embodiment, comprise the gas tank 1 that LNG is housed, dip sensor, solenoid valve 3 and processor 4, by processor 4, receive angle of inclination that dip sensors measure and export described dip angle signal by after itself and the comparative analysis of early warning angle, wherein, dip sensor is fixedly connected on gas tank 1, dip sensor comprises the first dip sensor 21 of normality and the second controlled dip sensor 22, herein, " normality " means in normal work, can measure in real time inclination angle and export the state at angle of inclination, " controlled " means in stand-by operation, according to the notice of processor, measure inclination angle and export the state at angle of inclination, or in normal work, inclination angle can be measured in real time but the processor state at its angle of inclination of active obtaining not, for energy consumption saving, consider, can make the second dip sensor 22 standbies (work of awaiting a favorable opportunity).
In the present embodiment, first described the first dip sensor 21 measures the angle of inclination of gas tank 1, and angle of inclination is transferred to processor 4, processor 4 is by itself and the comparative analysis of early warning angle, if angle of inclination shows to tilt, for example, when angle of inclination is greater than 80 °, processor 4 wakes the second dip sensor 22 up, it should be noted that, " waking up " herein corresponds to " controlled " of the second dip sensor 22, mean the processor 4 second dip sensor 22 work measurement angles of inclination of notice in holding state, or, the second dip sensor 22 is in running order and recorded angle of inclination and processor 4 now removes to obtain the numerical value at this angle of inclination, the second dip sensor 22 transfers to processor 4 by the angle of inclination of the gas tank of mensuration 1, when the angle of inclination that the second dip sensor 22 is surveyed shows to tilt, the corresponding dip angle signal of processor 4 output is controlled solenoid valve 3 and is opened valve.The second dip sensor 22 again measure angle of inclination and the mode analyzed by processor 4 herein as verification, prevent that the first dip sensor 21 from transmitting false information (comprising sensor faults itself or external condition interference etc.), in the present embodiment, only in the situation that having tilted, the first dip sensor 21 data of surveying demonstration just needs the data of the second dip sensor 22, should be appreciated that and also can adopt the second dip sensor 22 to be in the normal state equally.
For further getting rid of fail-safe hidden danger, need to process in time scene of the accident, for avoiding the unmanned warning in scene of the accident or scene of the accident, be the situation on remote unmanned ground, the present embodiment also provides the device of automatically dialing the police emergency number.Concrete, continuation is referring to Fig. 2, automobile-used LNG gas tank control system also comprises that one for locating and exporting geographical position to the positioning equipment 7 of processor, gps satellite positioning equipment for example, the one automatic access SAN Small Area Network being connected with processor 4 autoalarm 8 of dialing the police emergency number according to dip angle signal, SAN Small Area Network is the concept in mobile communication system, because automobile can be through different communities in moving process, through between Liang Ge community, need handover, autoalarm 8 automatically accesses the network in community when entering the community of mobile network, thereby can dial the police emergency number according to dip angle signal, and one phone automatically report the sound broadcasting device 9 that comprises geographical location information after setting up data and connecting, the voice messaging of sound broadcasting device 9 can set in advance, wherein geographical location information provides rear embedding by positioning equipment 7.
Further, described processor 4 comprises radio receiving transmitting module and/or wired connection interface, automobile-used LNG gas tank control system also comprises the vehicle display device (not shown) of and/or wire communication wireless with described processor, and communication can adopt Bluetooth short distance high-speed data communication.
Only be different from prior art gas tank 1 internal pressure and liquid level are measured without security protection measure mode, the present embodiment is successively measured the angle of inclination of gas tank by two dip sensors, with prediction vehicle, whether suffer a car accident and topple over, after processing according to processor 4, the dip angle signal of output is controlled the valve switch of solenoid valve 3, before accident leads to, rock gas is emitted from the outlet nozzle of solenoid valve 3, specifically at gas tank upper position (the gas tank position at gas-phase space place), separately, specially offer an air outlet 11, air outlet 11 is connected by conveyance conduit 6 with solenoid valve 3.Autoalarm 8 in the present embodiment has used mobile communication parts to report to the police, timely and convenient, and mobile communication is the development trend of the communications field, and in the continuous replacement, applying to all trades and professions is its certain trend.
In an embodiment of the present invention, the inclination numerical value of described dip sensor relative reference face under original state is zero, and under heeling condition, the inclination numerical value of relative reference face is the positive number all calculating with angle absolute value, and described reference surface is horizontal plane.
At Fig. 1, in Fig. 2, automobile-used LNG gas tank control system also comprises the liquid feed valve C1 that LNG Liquefied natural gas is delivered to gas tank 1, the air throttle E1 of the control gas inlet connecting successively, control the liquid valve V2 of liquid output, thereby can be turned off the liquid Restrictor Valves E2 that stops LNG Liquefied natural gas to enter gasifying pipe, and be positioned on gasifying pipe and connect the vaporizer Pr of liquid Restrictor Valves E2, wherein the input end of air throttle E1 is connected in the gas-phase space of gas tank 1, too high in order to prevent gas tank 1 internal pressure, gas-phase space has also connected main safety valve SV1 simultaneously, when pressure surpasses safety value, start main safety valve SV1, prevent that main safety valve SV1 is malfunctioning, establish secondary safety valve SV2 simultaneously, at main safety valve SV1, cannot work and when pressure surpasses safety value, start secondary safety valve SV2, establish in addition the pressure balanced atmospheric valve V1 that maintains gas tank 1, in order to prevent that LNG Liquefied natural gas from refluxing, and also connects a safety check C2 between the output terminal of air throttle E1 and the liquid Space of gas tank 1.
Fig. 3 shows the automobile-used LNG gas tank controlling method of the embodiment of the present invention, and its step comprises:
A. the first dip sensor records the angle of inclination A1 of gas tank, and processor obtains comparison value C1 by after itself and early warning angle S0, wherein C1=A1-S0;
B. when C1 is greater than 0, obtain the angle of inclination B1 that the second dip sensor records gas tank, processor obtains comparison value C2 by after itself and early warning angle S0, wherein C2=B1-S0;
C. when C2 is greater than 0, processor output dip angle signal is controlled solenoid valve and is opened valve release rock gas.
In steps A to C, the first dip sensor keeps measuring normality, processor can Real-time Obtaining its survey angle of inclination data, and by data and the comparison of early warning angle, the data of early warning angle for having arranged, when angle of inclination is greater than early warning angle, processor is notified the second dip sensor and is obtained its angle of inclination of surveying as verifying that whether the first data that dip sensor is surveyed are true, when the angle of inclination that the second dip sensor is surveyed is greater than early warning angle equally, vehicle is toppled over, thereby processor is exported corresponding dip angle signal and is controlled solenoid valve and open valve and emit rock gas, prevent in time the danger that in gas tank, liquified natural gas gasification expansion high pressure is blasted gas tank.
In order to make scene obtain processing and keeping order as early as possible, the automobile-used LNG gas tank controlling method of the embodiment of the present invention is further comprising the steps of:
D. positioning equipment obtains geographical position of living in, and it is temporary to transmit it to processor;
E. processor triggering autoalarm is dialed the police emergency number, and wherein, described autoalarm accesses place SAN Small Area Network automatically;
F. the information that comprises geographical position is also reported in sound broadcasting device geographical position in automatic acquisition processor after phone is set up data connection.
In step D to E, positioning equipment provides geographical position, and autoalarm access communications network is also dialed the police emergency number automatically, sound broadcasting device obtains geographical position and reports after closing of the circuit, for example, except general greeting, geographical position report capable of circulation.
Optionally, in step C, processor by dip angle signal by wired and/or wireless way for transmitting to vehicle display device.
The present invention adopts inclination sensor to be combined with solenoid valve, by measuring the angle of inclination of LNG gas tank, and while surpassing early warning angle at angle of inclination, by corresponding dip angle signal, control solenoid valve and open valve to discharge rock gas, gas tank after venting has been evacuated rock gas, mediate gas tank internal high pressure, avoided possible getting into an accident to cause the danger of on-the-spot blast.
Although the present invention with preferred embodiment openly as above; but it is not for limiting claim; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible change and modification, so protection scope of the present invention should be as the criterion with the scope that the claims in the present invention were defined.
Claims (10)
1. an automobile-used LNG gas tank control system, comprise the gas tank that LNG is housed, it is characterized in that, also comprise for measuring the dip sensor of described gas tank relative reference face tilt angle, and the solenoid valve that carries out valve opening and closing according to the dip angle signal of described dip sensor, when described dip angle signal surpasses early warning angle at angle of inclination, control solenoid valve and open valve release rock gas.
2. automobile-used LNG gas tank control system as claimed in claim 1, is characterized in that, by processor, is received angle of inclination that described dip sensor measures and is exported described dip angle signal by after itself and the comparative analysis of early warning angle.
3. automobile-used LNG gas tank control system as claimed in claim 2, it is characterized in that, described dip sensor comprises the first dip sensor of normality and the second controlled dip sensor, described the first dip sensor is measured the first angle of inclination of gas tank and transmits it to processor, the first angle of inclination shows to tilt that processor wakes the second dip sensor up, the second dip sensor is measured the second angle of inclination of gas tank and is transmitted it to processor, and the second angle of inclination shows to tilt that processor output dip angle signal control solenoid valve is opened valve.
4. automobile-used LNG gas tank control system as claimed in claim 2, it is characterized in that, also comprise that one for locating and exporting geographical position to the positioning equipment of processor, the one automatic access SAN Small Area Network being connected with processor the autoalarm of dialing the police emergency number according to dip angle signal, and a phone is set up the sound broadcasting device that after data connect, report comprises geographical location information automatically.
5. automobile-used LNG gas tank control system as claimed in claim 2, is characterized in that, described processor comprises radio receiving transmitting module and/or wired connection interface, and this system also comprises the vehicle display device of and/or wire communication wireless with described processor.
6. automobile-used LNG gas tank control system as claimed in claim 1, it is characterized in that, described dip sensor is integrated in transmitter, described transmitter is provided with CANOPEN interface as dip sensor communication terminal, and this system also comprises with described dip sensor by the vehicle display device of CANOPEN interface communication.
7. automobile-used LNG gas tank control system as claimed in claim 1, it is characterized in that, the inclination numerical value of described dip sensor relative reference face under original state is zero, under heeling condition, the inclination numerical value of relative reference face is the positive number all calculating with angle absolute value, and described reference surface is horizontal plane.
8. an automobile-used LNG gas tank controlling method, is characterized in that, comprises the following steps:
A. the first dip sensor records the angle of inclination A1 of gas tank, and processor obtains comparison value C1 by after itself and early warning angle S0, wherein C1=A1-S0;
B. when C1 is greater than 0, obtain the angle of inclination B1 that the second dip sensor records gas tank, processor obtains comparison value C2 by after itself and early warning angle S0, wherein C2=B1-S0;
C. when C2 is greater than 0, processor output dip angle signal is controlled solenoid valve and is opened valve release rock gas.
9. automobile-used LNG gas tank controlling method as claimed in claim 8, is characterized in that, further comprising the steps of:
D. positioning equipment obtains geographical position of living in, and it is temporary to transmit it to processor;
E. processor triggering autoalarm is dialed the police emergency number, and wherein, described autoalarm accesses place SAN Small Area Network automatically;
F. the information that comprises geographical position is also reported in sound broadcasting device geographical position in automatic acquisition processor after phone is set up data connection.
10. automobile-used LNG gas tank controlling method as claimed in claim 8, is characterized in that, in step C, processor by dip angle signal by wired and/or wireless way for transmitting to vehicle display device.
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 |
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| Publication Number | Publication Date |
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| CN104121477A true CN104121477A (en) | 2014-10-29 |
| CN104121477B CN104121477B (en) | 2017-03-01 |
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| 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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| CN104329564A (en) * | 2014-11-06 | 2015-02-04 | 上海雷尼威尔技术有限公司 | Automotive LNG gas cylinder monitoring system and method |
| 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 |
| CN109398602A (en) * | 2017-08-15 | 2019-03-01 | 上海船厂船舶有限公司 | The installation method of high pressure air bottle component for drill ship |
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| CN104121477B (en) | 2017-03-01 |
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