CN107606486A - A kind of LNG gas stations loading system and its method - Google Patents
A kind of LNG gas stations loading system and its method Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000003860 storage Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 24
- 239000000446 fuel Substances 0.000 claims description 21
- 239000000523 sample Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 230000033228 biological regulation Effects 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000003949 liquefied natural gas Substances 0.000 description 99
- 239000007789 gas Substances 0.000 description 43
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 239000003345 natural gas Substances 0.000 description 7
- 238000005086 pumping Methods 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002595 cold damage Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000011022 operating instruction Methods 0.000 description 1
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- 238000009834 vaporization Methods 0.000 description 1
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Abstract
The invention discloses a kind of LNG gas stations loading system and its method, including an at least filling machine, the filling machine includes being sequentially connected LNG storage tank, control valve 1, LNG immersed pumps, flowmeter, control valve 2, air filling gun, also include electronics controlling device and the control valve 3 being connected with flowmeter, the electronics controlling device is connected with control valve 2, the control valve 3 is connected with LNG storage tank and electronics controlling device, and the electronics controlling device is connected with station administration center and controller；It is characterized in that, also include station control system and vehicle detecting system, the station control system is connected with control valve 1, LNG immersed pumps, controller respectively, the vehicle detecting system is used to obtain positional information of the vehicle at porch and aerating parking position, the backward station control system of via controller analyzing and processing sends system standby or circulating precooling or filling instruction, and the station control system passes through logic circuit output control level.
Description
Technical field
The present invention relates to natural gas field, and in particular to a kind of LNG gas stations loading system and its method.
Background technology
LNG (Liquefied Natural Gas), the i.e. english abbreviation of liquefied natural gas.Natural gas be in gas field from
So mined fuel gas, main component are made up of methane.LNG is at ambient pressure gaseous natural gas, is cooled to -162
DEG C, it can be allowed to condense into liquid.Storage and transportation space can be greatlyd save after natural gas liquefaction, and there is calorific value is big, performance is high etc.
Feature.
Also, LNG is a kind of cleaning, the efficient energy.Natural gas is increasingly favored as clean energy resource, Hen Duoguo
LNG is all classified as preferred fuels by family.
However, LNG belongs to cryogenic liquid medium, temperature is typically at -140 DEG C or so, easily vaporization.Therefore LNG meters are being carried out
Amount filling operation when must first carry out system " circulating precooling " flow, after carry out filling flow again.Traditional gas station is in aerating
During, LNG air containers in place after, air filling gun is inserted on container filler, operator passes through the preset keyboard of LNG filling machines
Aerating instruction is initiated, under the automatically controlling of electronics controlling device and station control system, system opening controlling valve 1, control valve 3 successively,
Closing control valve 2, open LNG immersed pumps.LNG media are successively by LNG storage tank, through control valve 1, immersed pump, flowmeter, control valve
3, tank is urged to LNG, the process is " circulating precooling " flow.Judge through the collection flow meter data analysis of electronics controlling device, flow
When being liquid single-phase flow in meter, opening controlling valve 2, closing control valve 3, LNG is by LNG storage tank, through control valve 1, immersed pump, flow
Count, control valve 2, in the gas bomb in air filling gun to LNG fuel vehicles, the process is to fill flow.And LNG meterings add every time
It is required for performing above-mentioned 2 flows during note, wherein " circulating precooling " flow spent time is with urging tank LNG medium temperatures and system work
The cold damage of skill pipeline is related, generally at 30 seconds to more than ten minutes；Wherein " fill " flow spent time and filling weight and fill
Instantaneous delivery is related, generally within 10 minutes.Whole process performs the time will be up to several minutes, need to be after system precooling success
It can really realize that LNG is filled into container.Therefore relative to gas station or CNG filling machines station, LNG gas stations can't
Accomplish LNG can be just filled into container immediately after plugging in rifle, thus conventional metered dose filling operator scheme is time-consuming longer.Work as aerating
When portfolio of standing is big or aerating peak period, vehicle queue phenomenon is will appear from, long when the stand-by period, client will leave selection
To next station aerating, business is caused to be lost in.To avoid above-mentioned phenomenon, traditional method is to expand station scale, increases filling machine quantity,
To meet to carry out aerating to more cars simultaneously, this will cause fund input increase of building a station；Or using when system is in ideal case
Under, i.e., when no aerating instructs, system still carries out " circulating precooling " operation, is full of always with process pipe in holding system
LNG media fluids, which make LNG medium for extended time largely absorb heat and largely vaporize, cause the loss of LNG liquid more, pump
Institute's consuming electric power increase is operated, causes gas station operation cost increase.
Therefore, a kind of new metering loading system for LNG gas stations, the metering filling time is shortened, so as to effectively
Reduce the vehicle stand-by period be there is an urgent need to.
The content of the invention
The technical problems to be solved by the invention be time for being consumed in filling process is measured of traditional gas station compared with
Long, aerating efficiency is low, and LNG liquid loss is more, and it is an object of the present invention to provide a kind of LNG gas stations filling system in use
System and its method, solve the above problems.
The present invention is achieved through the following technical solutions：
A kind of LNG gas stations loading system and its method, including an at least filling machine, the filling machine include connecting successively
The LNG storage tank that connects, control valve 1, LNG immersed pumps, flowmeter, control valve 2, air filling gun, in addition to the electronics being connected with flowmeter
Controlling device and control valve 3, the electronics controlling device are connected with the controller in control valve 2 and vehicle detecting system, the control
Valve 3 is connected with LNG storage tank and electronics controlling device, and the electronics controlling device is connected with station administration system；Also include station control system and
Vehicle detecting system, the station control system are used to obtain vehicle with control valve 1, LNG immersed pumps, the vehicle detecting system respectively
Signals of vehicles at porch and aerating parking position, and the signal that the signals of vehicles of acquisition and electronics controlling device are uploaded passes through
Controller analysis judges and sends operation operating instruction to station control system, and the station control system passes through logic circuit output control electricity
It is flat.
Further, gas station generally use low temperature immersed pump, in order to ensure that the pump normal reliable works, pump must opened
Preceding that abundant precooling, i.e. opening controlling valve 1 are carried out to it, LNG flows into pump pond through control valve 1 by LNG storage tank, when LNG immersed pump quilts
LNG liquid is invaded completely completely, can carry out opening pump operation, the pre- cold flow of the pump usually requires 30 seconds to a few minutes；
The low temperature mass flowmenter of generally use, when it is biphase gas and liquid flow to flow through flowmeter medium, error in dipping is larger,
Therefore it is to meet the requirement of measuring accuracy, it is necessary to carry out " precooling " flow, i.e. opening controlling valve 1 and control valve 3, and start pump,
Under the action of pump, LNG returns to storage tank by storage tank, control valve 1, immersed pump, flowmeter, control valve 3, and the flow flows through to medium
Process pipeline and flowmeter carry out precooling operation, general 30 seconds of pre- cold flow to more than ten minutes；When the electronics of filling machine
Controlling device is detected in flowmeter when be liquid single-phase flow, and opening controlling valve 2, closing control valve 3, LNG is by LNG storage tank, through controlling
Valve 1 processed, immersed pump, flowmeter, control valve 2, in the gas bomb in air filling gun to LNG fuel vehicles, this fills flow and regards aerating amount
How much, typically at several minutes；When container is full of or filling weight reaches pre- loading amount, carries out filling process and terminate flow, system
Into holding state, that is, simultaneously close off control valve 2, opening controlling valve 3, termination of pumping, closing control valve 1；System in the standby state,
If do not closed control valve 1 and termination of pumping, there will be LNG stream to move in circulation loop, LNG will be vaporized, and the evaporating capacity is the damage of gas station
Consumption, as the holding state time is longer, waste will be very big, therefore traditional gas station aerating fills pattern and all fills knot in single
Termination of pumping or termination of pumping and closing control valve 1 after beam.
Mainly it is made up of from the foregoing, aerating fills the time two parts：
One, system circulation pre-coo time (mainly pump, process pipe and flowmeter precooling)；
Secondly, fill the time, i.e. LNG media are filled into the time of container by air filling gun.And the time is filled mainly with filling
Measure and to fill instantaneous delivery relevant, improve instantaneous delivery and can shorten and fills the time.
Therefore, required system pre-coo time when the present invention is to shorten single LNG filling, and then shorten when filling of aerating
Between, the efficiency of aerating is improved with this.
Preferably, a kind of LNG gas stations loading system, temperature sensor, the TEMP are installed on the pump pond
Device is used to detecting temperature in pump pond, and the temperature of detection is sent to station control system by temperature sensor, on the filling machine
Indicator lamp is preset, itself and controller docking station control system；The pump pond temperature that the controller is arrived by control system acquisition of standing, and
Com-parison and analysis is carried out to it and obtains each pump pond temperature in filling machine station from as little as high sequence, and controls the low pump pond of temperature is corresponding to add
Indicator lamp flashes on mechanism of qi, prompts operating personnel and vehicle preferentially to carry out aerating using the filling machine, and then further improve
The service efficiency of the system, reduce the loss of LNG liquid.
Specifically, a kind of LNG gas stations loading system, the vehicle entrance that the vehicle detecting system includes being sequentially connected is visited
Device, controller and vehicle is surveyed to be connected with station control system and electronics controlling device with regard to location probe, the controller.
Preferably, a kind of LNG gas stations loading system, the vehicle entrance detector and vehicle are red with regard to location probe
One or more in outer sensor or pressure sensor or laser sensor or video monitoring system.Vehicle entrance detector and
The signal that vehicle is driven into or out of with regard to location probe by infrared sensor reception vehicle, or by the way that pressure sensor is placed on into car
On the ground that entrance and vehicle are located in place, and then the letter that vehicle drives into or out of is obtained by detecting pressure information
Number；Laser sensor is identical with the principle of infrared sensor, and video monitoring system includes camera, and controller directly extracts video
The video data of monitoring server, whether by judging video image identification, and analyzing has vehicle pull-in and vehicle in place.
Specifically, a kind of charging method of LNG gas stations, including system standby flow, circulating precooling flow, filling stream
Journey；
System standby flow：Control system of standing control control valve 1 and 2 is closed, control valve 3 is opened, immersed pump stops；
Circulating precooling flow：Vehicle entrance detector monitors enter to vehicle, send that information to controller, through control
After device analyzing and processing, sent to station control system and start precooling instruction, and vehicle counter m in controller is added into 1, i.e. m=m+1,
And start Tn；Control system of standing performs circulating precooling flow, i.e. opening controlling valve 1 and control valve 3, LNG after receiving precooling instruction
Liquid will enter pump pond by LNG storage tank, and under pump power effect, LNG liquid flows back to LNG storages through pump pond, flowmeter, control valve 3
Tank；
Fill flow：While system carries out pre- cold flow, LNG fuel vehicles are driven into gas station by gas station entrance,
And stopped at aerating parking position, after operator checks the operation such as vehicle-state and its filler purging, air filling gun and LNG are fired
The mouth that fills of truck is carried out after correctly connecting, and the operation preset keyboard of filling machine sends aerating to station control system from electronics controlling device and referred to
Order, system enter filling flow, i.e., LNG liquid is by LNG storage tank, respectively through control valve 1, pump pond, flowmeter, control valve 2, aerating
Rifle enters LNG fuel vehicles, now closing control 3, opening controlling valve 2；
When Tn is more than TmWhen, system enables system standby flow；TnAfter entering for vehicle entrance detector monitors to vehicle,
Controller is sent a signal to, after controller analyzes and processes, sends a signal to station control system, control system of standing, which is sent, starts precooling letter
Number, and the timing precooling stand-by period that will start when vehicle counter m adds 1 in controller；TmFor circulating precooling flow of the present invention
Maximum latency, the TmFor 2~5 minutes；
When Tz is less than or equal to Ty, filling machine enables filling flow at the Ty moment；TzLocation probe is detected for vehicle
After signals of vehicles, aerating is sent to station control system by electronics controlling device and instructed, system is entered the time of filling flow；TyFor
Circulating precooling flow precooling success, meets the time to LNG fuel vehicle burner structures；
When Tz is more than Ty, filling machine enables filling flow at the Tz moment；
In flow is filled, after the filling weights of LNG fuel vehicles reaches prepackage value or gas bomb is full of, electronics controlling device is to control
Device processed sends stopping and fills signal；The vehicle counter m values of controller analysis simultaneously；
When m is equal to 0, controller sends precooling stop signal to station control system, enables system standby flow, by m, Td weight
It is set to zero；
When m, which is more than, waits 1, circulating precooling flow is enabled, system waits lower fuel vehicle to be filled, when this fills wait
Between be designated as Td；
When Td is more than Tm, system standby flow is enabled, m, Td are reset to zero.
Entered the station porch specifically, vehicle entrance detector is arranged on gas station, when there is vehicle pull-in, it will produce spy
Signal is surveyed, and transmits the signal to controller, vehicle counter m is performed in controller plus one operates；
Vehicle is arranged on gas station with regard to location probe and fills region, i.e., when this filling machine carries out filling service, affiliated combustion
Material fills vehicle parking region, is typically mounted on filling machine.Sail out of the region again after thering is vehicle to drive into, vehicle detects in place
Device will produce one and sail out of signal, and transmit the signal to controller, and vehicle counter m performs the operation that subtracts one in controller.
Further, due to there is LNG stream dynamic in circulation loop, LNG will be vaporized, as the circulating precooling time is longer,
The waste of gas station will increase.
The present invention is by largely testing to obtain TmFor 2~5 minutes, the maximum latency of circulating precooling flow of the present invention
In this period, the LNG liquid that it is lost is less, and for comprehensive angle, its efficiency is best, cost is minimum.
Preferably, a kind of charging method of LNG gas stations, in circulating precooling flow, control system of standing while gas station is monitored
Each pump pond temperature, controller obtains the sequence of each pump pond temperature from low to high by com-parison and analysis, and makes aerating according to m numerical value
Warning light on machine is flashed successively with the order of temperature from low to high.
When there are more LNG fuel vehicles, more filling machines are provided with, now preferentially select the latent liquid of the minimum LNG of temperature
Pump, LNG fuel vehicles above are arranged with temperature sequence arrangement from low to high, because LNG is liquid at -162 DEG C, therefore
By 1 boundary's point of the relatively low closer liquid of temperature, therefore the time that the LNG fuel vehicles are needed to wait for is shorter, is more beneficial for rationally
Arrange, the further loss for reducing LNG.
Further, a kind of charging method of LNG gas stations, frequency is run by the frequency converter in regulation station control system
Rate, can adjust LNG immersed pump exploitation speeds, so as to adjust the mass flow of conveying LNG liquid, the mass flow with m values increasing
Increase greatly.When vehicle is more, the mass flow of LNG liquid is conveyed by increasing, filling efficiency will be higher, further save
Time of filling.
Specifically, a kind of charging method of LNG gas stations, the TmFor 4 minutes.
Preferably, a kind of charging method of LNG gas stations, in the circulating precooling flow, electronics while circulating precooling
Controlling device judges flowmeter interior media state by gathering flowmeter process data and analyzing, when medium state is that liquid is single-phase
After stream, meet precooling requirement.
Therefore, in the use of the present invention, when stand-by time is less than TmWhen, system not termination of pumping and control valve in holding state
1, system will maintain " precooling " state always, and when there is aerating instruction, system is with regard to directly carrying out filling flow；And the present invention
By prejudge in advance will have aerating instruction reach when, system with regard in advance carry out " precooling " flow, i.e., plug in rifle before be just
System precooling.
The present invention compared with prior art, has the following advantages and advantages：
1st, a kind of LNG gas stations loading system of the invention and its method, traditional gas station aerating fill pattern, because can not be pre-
Know the system standby time, termination of pumping or termination of pumping and closing control valve 1 all after single fills end；And the present invention can predict system
Stand-by time, system is set that is, with regard to carrying out system precooling before rifle is inserted, and then can effectively to be saved with regard to carrying out " precooling " flow in advance
Time, obtain bigger interests；
2nd, a kind of LNG gas stations loading system of the invention and its method, within the Tm times of the present invention, can effectively be controlled
Natural gas hydronic maximum time, and then simultaneously the natural gas of loss can be made minimum within the aerating shorter time, reach
Benefit, long-term use of being more convenient for, and for comprehensive angle, its efficiency is best, cost is minimum；
3rd, a kind of LNG gas stations loading system of the invention and its method, the present invention is not only effective in use to be saved
The about stand-by period, and reduce LNG loss, it is easy to operation, and cost is relatively low.
4th, a kind of LNG gas stations loading system of the invention and its method, when the present invention is used to run gas station, need to only add
Fill vehicle detecting system, and primary electron controlling device and the connection change of station control system be connected with controller, then by controller and
Control system of standing connects, other without reconstruction.It is low to reconstruct cost.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
The logic circuit schematic diagram that Fig. 2 is vehicle detecting system of the present invention between control system of standing.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Fig. 1~2, a kind of LNG gas stations loading system of the invention and its method, including an at least filling machine,
The filling machine include be sequentially connected LNG storage tank, control valve 1, LNG immersed pumps, flowmeter, control valve 2, air filling gun, also wrap
Include the electronics controlling device being connected with flowmeter and control valve 3, the electronics controlling device is connected with control valve 2, the control valve 3 with
LNG storage tank connects with electronics controlling device, and the electronics controlling device is connected with controller；Characterized in that, also include station control system
And vehicle detecting system, the station control system are connected with control valve 1, LNG immersed pumps, controller respectively, the vehicle detection system
Unite for the signals of vehicles for obtaining vehicle at porch and aerating parking position, and the signals of vehicles of acquisition is sent to station control
System, the station control system pass through logic circuit output control level.
Temperature sensor is installed, the temperature sensor is used to detect the temperature in pump pond, and temperature on the pump pond
The temperature of detection is sent to station control system by degree sensor, and the warning light being connected with controller is connected with the filling machine；
Vehicle entrance detector, controller and the vehicle that the vehicle detecting system includes being sequentially connected detect in place
Device, the controller are connected with station control system.
The vehicle entrance detector and vehicle are infrared sensor or pressure sensor or laser with regard to location probe
One or more in sensor or video monitoring system.
Embodiment 2
A kind of charging method of described LNG gas stations, including system standby flow, circulating precooling flow, filling flow；
When Tn is more than TmWhen, system enables system standby flow；TnAfter entering for vehicle entrance detector monitors to vehicle,
Controller is sent a signal to, after controller analyzes and processes, sends a signal to station control system, control system of standing, which is sent, starts precooling letter
Number, and the timing precooling stand-by period that will start when vehicle counter m adds 1 in controller；TmFor circulating precooling flow of the present invention
Maximum latency, the TmFor 4 minutes；
When Tz is less than or equal to Ty, filling machine enables filling flow at the Ty moment；TzLocation probe is detected for vehicle
After signals of vehicles, aerating is sent to station control system by electronics controlling device and instructed, system is entered the time of filling flow；TyFor
Circulating precooling flow precooling success, meets the time to LNG fuel vehicle burner structures；
When Tz is more than Ty, filling machine enables filling flow at the Tz moment；
In flow is filled, after the filling weights of LNG fuel vehicles reaches prepackage value or gas bomb is full of, system standby stream is enabled
Journey, while electronics controlling device sends stopping to station control system and fills signal；
When m is equal to 0, controller sends precooling stop signal to station control system, enables the initial flow of system；
When m is more than or equal to 1, circulating precooling flow is enabled, system waits lower fuel vehicle to be filled, and this fills wait
Time is designated as Td；
When Td is more than Tm, system standby flow is enabled, m, Td are reset to zero.
LNG fuel vehicles are sailed out of when filling, and triggering vehicle is produced into vehicle with regard to location probe and sails out of signal, and is uploaded to control
Device processed, control and vehicle counter m is subtracted one.In embodiment 2 under the same conditions, T is changedmValue, under the same conditions, point
The evaporating capacity of the LNG liquid in circulating precooling flow is not measured, obtains following table：
| Tm (minute) | Evaporating capacity (L) |
| 1 | 156 |
| 2 | 159 |
| 3 | 162 |
| 4 | 162 |
| 5 | 170 |
| 6 | 213 |
According to experiment, when the Tm of the present invention is between 2~5 minutes, the amount of loss is less, when of the invention more than this
Between when, its waste is more, and required cost is higher；When less than the time of the present invention, the period of its waste and the present invention
Interior waste difference is smaller, but the time waited is shorter, considers from integrated cost angle, and its cost is higher than the period of the invention
Cost.
Therefore, Tm of the invention is in 2~5 minutes so that the cost of this refueling system further reduces, and its efficiency also obtains
Further raising has been arrived, has been more beneficial for long-term use.
Embodiment 3
A kind of charging method of described LNG gas stations, on the basis of embodiment 2, control system in station in circulating precooling flow
System monitors pump pond temperature simultaneously, and controller obtains the temperature information, and each pump pond temperature is obtained from low to high by com-parison and analysis
Sequence, and the warning light on filling machine is flashed successively with the order of temperature from low to high according to m numerical value.
When there is four filling machines, the LNG immersed pumps corresponding to filling machine work simultaneously, when now there is 5 to need aerating
Car when, controller obtains each pump pond temperature by control system of standing, and pump pond temperature is ranked up, and control temperature minimum
Pump pond corresponding to warning light flicker on filling machine, and then guide first car to reach progress aerating at the filling machine, controlling
Warning light flicker on the low corresponding filling machine of temperature control two processed, guiding second car reach progress aerating at the filling machine, according to
It is secondary to analogize, and then put forward efficient effect.
Embodiment 4
A kind of charging method of described LNG gas stations, it is adjustable by the frequency converter running frequency in regulation station control system
LNG immersed pump exploitation speeds are saved, so as to adjust the mass flow of conveying LNG liquid, the mass flow will increase with the increase of m values
Greatly.
In the circulating precooling flow, while circulating precooling electronics controlling device by gather flowmeter process data and point
Analysis judges flowmeter interior media state, after medium state is liquid single-phase flow, meets precooling requirement.
The system standby flow is that control valve 1 and 2 is closed, control valve 3 is opened, immersed pump stops；
The circulating precooling flow is that vehicle entrance detector monitors enter to vehicle, sends a signal to controller, passes through
After controller analyzing and processing, sent to station control system and start precooling instruction, and vehicle counter m in controller is added 1, and started
Tn；Control system of standing receives precooling instruction, and performs circulating precooling flow；
The filling flow is that vehicle detects signals of vehicles with regard to location probe while system carries out pre- cold flow
Afterwards, after operator checks the operation such as vehicle-state and its filler purging, the mouth that fills of air filling gun and LNG fuel vehicles is carried out just
Really after connection, electronics controlling device sends aerating to station control system by controller and instructed.
Embodiment 5
When the infrared sensor being arranged at vehicle entrance receives the signal that a vehicle drives into, then 1 is designated as, works as vehicle
The infrared sensor of porch receives the signal that a vehicle rolls away from, then is designated as 0；When the pressure sensing at aerating parking position
Device receives the signal that a vehicle drives into, then is designated as 1, and the pressure sensor at aerating parking position receives a vehicle and sailed
The signal gone out, then be designated as 0, when control system of standing receives the signals of vehicles submitted by controller, triggers logic circuit, such as Fig. 2, obtains
To truth table 1.
Truth table 1
| Vehicle entrance detector | Vehicle is with regard to location probe | Control valve 1 | Control valve 2 | Control valve 3 |
| 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 1 | 1 | 0 |
| 1 | 0 | 1 | 0 | 1 |
| 1 | 1 | 1 | 1 | 0 |
Wherein, for control valve 1, control valve 2, control valve 3,1 represents to open, and 0 represents to close.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of LNG gas stations loading system, including an at least filling machine, the filling machine includes the LNG storages being sequentially connected
Tank, control valve 1, LNG immersed pumps, flowmeter, control valve 2, air filling gun, in addition to the electronics controlling device being connected with flowmeter and control
Valve 3 processed, the electronics controlling device are connected with control valve 2, and the control valve 3 is connected with LNG storage tank and electronics controlling device, the electricity
Sub- controlling device is connected with station administration center and controller；Characterized in that, also include station control system and vehicle detecting system, it is described
Control system of standing is connected with control valve 1, LNG immersed pumps respectively, the vehicle detecting system be used to obtain vehicle in porch and
Vehicle position information at aerating parking position, the backward station control system of via controller analyzing and processing send system standby or circulating precooling
Or filling instruction, the station control system pass through logic circuit output control level.
A kind of 2. LNG gas stations loading system according to claim 1, it is characterised in that pump where the LNG immersed pumps
Pond has been provided with temperature sensor, and the temperature sensor is used to detect the temperature in pump pond, and temperature sensor will detect
Temperature be sent to station control system, be connected with the warning light being connected with controller on the filling machine.
A kind of 3. LNG gas stations loading system according to claim 1, it is characterised in that the vehicle detecting system bag
The vehicle entrance detector, controller and the vehicle that are sequentially connected are included with regard to location probe, the controller and station control system and control
Device connection processed.
A kind of 4. LNG gas stations loading system according to claim 3, it is characterised in that the vehicle entrance detector
With regard to location probe it is one kind in infrared sensor or pressure sensor or laser sensor or video monitoring system with vehicle
It is or a variety of.
5. the charging method of a kind of LNG gas stations according to claims 1 to 4, it is characterised in that including system standby stream
Journey, circulating precooling flow, filling flow；
When Tn is more than TmWhen, the standby flow of loading system execution system；TnAfter entering for vehicle entrance detector monitors to vehicle,
Controller is sent a signal to, after controller analyzes and processes, sends instructions to station control system, control system of standing performs circulating precooling stream
Journey, and vehicle counter m in controller is added to the timing precooling stand-by period started for the moment；TmFor circulating precooling flow of the present invention
Maximum latency, the TmFor 2~5 minutes；
When Tz is less than or equal to Ty, filling machine enables filling flow at the Ty moment；Tz is that vehicle detects vehicle with regard to location probe
After signal, operator sends aerating to station control system by electronics controlling device via controller and instructed, and system is entered filling flow
Time；Ty is that system performs circulating precooling flow, judges precooling success through flowmeter, meets to LNG fuel vehicle burner structures
Time；
When Tz is more than Ty, filling machine enables filling flow at the Tz moment；
In flow is filled, after the filling weight of the gas bomb of LNG fuel vehicles reaches prepackage value or gas bomb is full of, electronics controlling device
Stopping, which is sent, to controller fills signal；
When m is equal to 0, controller is sent to station control system stops precooling signal, enables system standby flow；
When m is more than or equal to 1, circulating precooling flow is enabled, starts timer timing, loading system waits lower fuel vehicle or right
This car continues to fill, and this fills the stand-by period and is designated as Td；
When Td is more than Tm, system standby flow is enabled, m, Td are reset to zero；
LNG fuel vehicles are sailed out of when filling, and triggering vehicle is produced into vehicle with regard to location probe and sails out of signal, and is uploaded to control
Device, control and vehicle counter m is subtracted one.
6. the charging method of a kind of LNG gas stations according to claim 5, it is characterised in that in circulating precooling flow, follow
Control system of being stood in the pre- cold flow of ring monitors pump pond temperature simultaneously, and controller obtains the temperature information of each LNG immersed pumps and to it
Sorted from low to high, and the warning light on filling machine is flashed successively with the order of temperature from low to high according to m numerical value.
7. the charging method of a kind of LNG gas stations according to claim 5, it is characterised in that control system of standing includes frequency conversion
Device, the controller to station control system by sending frequency adjustment instructions, the mass flow of regulation conveying LNG liquid, the quality
Flow increases with the increase of vehicle counter m values.
A kind of 8. charging method of LNG gas stations according to claim 5, it is characterised in that the TmFor 4 minutes.
A kind of 9. charging method of LNG gas stations according to claim 5, it is characterised in that the circulating precooling flow
In, electronics controlling device judges flowmeter interior media shape by gathering flowmeter process data and analyzing while circulating precooling
State, after medium state is liquid single-phase flow, it is determined as precooling success, meets that metering fills requirement.
A kind of 10. charging method of LNG gas stations according to claim 5, it is characterised in that the system standby flow
Closed for control valve 1 and 2, control valve 3 is opened, immersed pump stops；
The circulating precooling flow is that vehicle entrance detector monitors enter to vehicle, controller is sent a signal to, through control
After device analyzing and processing, sent to station control system and start precooling instruction, and vehicle counter m in controller is added 1, and start timing
Device Tn timing；Control system of standing performs circulating precooling flow；
The filling flow is while system carries out pre- cold flow, after vehicle detects signals of vehicles with regard to location probe, is grasped
After work person checks the operation such as vehicle-state and its filler purging, the mouth that fills of air filling gun and LNG fuel vehicles is correctly connected
After connecing, operator sends aerating to controller by electronics controlling device and instructed, and filling flow is performed by station control system.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483883A (en) * | 2019-09-12 | 2021-03-12 | 安瑞科(廊坊)能源装备集成有限公司 | LNG gas station |
| CN112963730A (en) * | 2021-03-25 | 2021-06-15 | 厚普清洁能源股份有限公司 | Pressure-stabilizing constant-flow control system and method for LNG multi-immersed pump marine filling sledge |
| 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 |
| CN115370958A (en) * | 2022-05-05 | 2022-11-22 | 成都秦川物联网科技股份有限公司 | LNG distributed energy Internet of things intelligent air supply management method and LNG distributed energy Internet of things intelligent air supply device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423049A (en) * | 1987-07-15 | 1989-01-25 | Hitachi Ltd | Method of advance operation control of air conditioner |
| CN202629586U (en) * | 2012-03-30 | 2012-12-26 | 查特深冷工程系统(常州)有限公司 | Box type gas filling device for liquefied natural gas |
| CN204005208U (en) * | 2014-06-17 | 2014-12-10 | 北京航天发射技术研究所 | LNG Liquefied natural gas LNG refueling system and LNG filling machine thereof |
| CN204114557U (en) * | 2014-07-15 | 2015-01-21 | 天津市奥利达设备工程技术有限公司 | The LNG filling machine control system improved |
| CN205331788U (en) * | 2016-01-29 | 2016-06-22 | 新地能源工程技术有限公司 | LNG filling station storage tank system with built -in immersed pump |
| CN105715947A (en) * | 2016-03-14 | 2016-06-29 | 江苏德邦工程有限公司 | LNG gas station gas filling system and gas filling control method |
| CN107065764A (en) * | 2017-06-20 | 2017-08-18 | 成都华气厚普机电设备股份有限公司 | A kind of LNG gas stations intelligence control system and its control method |
| CN207378485U (en) * | 2017-11-09 | 2018-05-18 | 成都深冷凌泰机电科技有限公司 | A kind of LNG gas stations refueling system |
-
2017
- 2017-11-09 CN CN201711094050.0A patent/CN107606486A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6423049A (en) * | 1987-07-15 | 1989-01-25 | Hitachi Ltd | Method of advance operation control of air conditioner |
| CN202629586U (en) * | 2012-03-30 | 2012-12-26 | 查特深冷工程系统(常州)有限公司 | Box type gas filling device for liquefied natural gas |
| CN204005208U (en) * | 2014-06-17 | 2014-12-10 | 北京航天发射技术研究所 | LNG Liquefied natural gas LNG refueling system and LNG filling machine thereof |
| CN204114557U (en) * | 2014-07-15 | 2015-01-21 | 天津市奥利达设备工程技术有限公司 | The LNG filling machine control system improved |
| CN205331788U (en) * | 2016-01-29 | 2016-06-22 | 新地能源工程技术有限公司 | LNG filling station storage tank system with built -in immersed pump |
| CN105715947A (en) * | 2016-03-14 | 2016-06-29 | 江苏德邦工程有限公司 | LNG gas station gas filling system and gas filling control method |
| CN107065764A (en) * | 2017-06-20 | 2017-08-18 | 成都华气厚普机电设备股份有限公司 | A kind of LNG gas stations intelligence control system and its control method |
| CN207378485U (en) * | 2017-11-09 | 2018-05-18 | 成都深冷凌泰机电科技有限公司 | A kind of LNG gas stations refueling system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483883A (en) * | 2019-09-12 | 2021-03-12 | 安瑞科(廊坊)能源装备集成有限公司 | LNG gas station |
| CN112963730A (en) * | 2021-03-25 | 2021-06-15 | 厚普清洁能源股份有限公司 | Pressure-stabilizing constant-flow control system and method for LNG multi-immersed pump marine filling sledge |
| 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 |
| CN115370958A (en) * | 2022-05-05 | 2022-11-22 | 成都秦川物联网科技股份有限公司 | LNG distributed energy Internet of things intelligent air supply management method and LNG distributed energy Internet of things intelligent air supply device |
| CN115370958B (en) * | 2022-05-05 | 2023-08-29 | 成都秦川物联网科技股份有限公司 | LNG distributed energy Internet of things intelligent air supply management method and air supply device |
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