CN110848560B - Unmanned LNG air entrainment machine - Google Patents
Unmanned LNG air entrainment machine Download PDFInfo
- Publication number
- CN110848560B CN110848560B CN201810955778.6A CN201810955778A CN110848560B CN 110848560 B CN110848560 B CN 110848560B CN 201810955778 A CN201810955778 A CN 201810955778A CN 110848560 B CN110848560 B CN 110848560B
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- Prior art keywords
- control module
- filling
- unmanned
- signal
- gun
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- 238000013475 authorization Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 35
- 239000000945 filler Substances 0.000 claims description 26
- 238000005429 filling process Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 239000003949 liquefied natural gas Substances 0.000 description 63
- 239000007789 gas Substances 0.000 description 36
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/06—Fluid distribution
- F17C2265/061—Fluid distribution for supply of supplying vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides an unattended LNG dispenser, which comprises a filling gun, a gas transmission pipeline, a control module, a POS machine, a mass flowmeter and an emergency cut-off valve. The gas transmission pipeline is communicated with the filling gun; the POS machine is electrically connected to the control module, pre-authorizes the bank card and transmits an authorization signal to the control module; the mass flowmeter is used for detecting the mass of the LNG injected into the vehicle-mounted tank and transmitting a detected mass signal to the control module; the emergency cut-off valve is used for opening or closing the gas transmission pipeline, wherein the control module controls the emergency cut-off valve based on the authorization signal so as to carry out gas filling; after the air filling is stopped, the control module generates a cost signal based on the quality signal and transmits the cost signal to the POS machine to finish fee deduction. According to the unattended LNG dispenser, the self-service filling of LNG by a driver can be realized, the filling personnel and cashier are not needed in the gas station, the filling efficiency is improved while the operation safety is ensured, and the construction cost of the gas station is reduced.
Description
Technical Field
The invention relates to the technical field of gas filling machines, in particular to an unattended LNG gas filling machine.
Background
The existing LNG dispenser is usually in a non-self-service working mode, namely, an LNG station is provided with special filling personnel and cashier. The control system and the flow of the LNG dispenser generally need to be assisted by a dispenser operator. The gas dispenser for filling LNG through the assistance of the gas filling operation workers has a plurality of defects, for example, the gas station needs to use a plurality of operation workers, and meanwhile, office station rooms need to be built, a large amount of manpower and funds are needed, so that the construction quantity of the LNG gas station is limited to a certain extent, and the popularization and the use of new LNG energy are limited.
In addition, after the gas filling is finished, a driver needs to go to a business hall to pay, particularly, a large number of vehicles are queued in the peak period, the service efficiency of the gas filling machine is low, and the comprehensive economic benefit of the gas filling station is finally affected.
Accordingly, there is a need to provide an unattended LNG dispenser that at least partially addresses the above-described problems.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, the present invention discloses an unmanned LNG dispenser for dispensing gas to a vehicle-mounted tank of a vehicle, the unmanned LNG dispenser comprising:
a filling gun;
the gas transmission pipeline is communicated with the filling gun;
a control module;
the POS machine is electrically connected to the control module, and can pre-authorize the bank card and transmit an authorization signal to the control module;
a mass flow meter electrically connected to the control module for detecting the mass of LNG injected into the on-board tank and transmitting the detected mass signal to the control module; and
an emergency shut-off valve disposed on the gas line and electrically connected to the control module to open or close the gas line,
wherein the control module controls the emergency cut-off valve based on the authorization signal to perform air filling; and is also provided with
After the air filling is stopped, the control module generates a cost signal based on the quality signal and transmits the cost signal to the POS machine to finish fee deduction.
According to the unmanned LNG dispenser, the self-service filling of LNG by a driver can be realized, the self-service fee deduction operation can be realized, special filling personnel and cashier are not needed in the gas station, the filling efficiency can be greatly improved while the operation safety is ensured, less personnel are input, and the construction cost of the gas station is reduced.
Optionally, a filling gun detection sensor is further included, and is electrically connected to the control module, for detecting a position of the filling gun, and transmitting a detected filling gun position signal to the control module.
Optionally, the air return gun further comprises an air return gun and an air return gun detection sensor, wherein the air return gun detection sensor is electrically connected to the control module and used for detecting the position of the air return gun and transmitting a detected air return gun position signal to the control module.
Optionally, the device further comprises an electrostatic grounding clamp and an electrostatic grounding detection device, wherein the electrostatic grounding detection device is electrically connected to the control module and used for detecting the state of the electrostatic grounding clamp and transmitting detected grounding signals to the control module.
Optionally, the gas filling system further comprises a continuous gas filling button, wherein the continuous gas filling button is electrically connected to the control module, and when the time for pressing the continuous gas filling button exceeds a first time period, the control module controls the emergency cut-off valve to open the gas transmission pipeline for gas filling; and when the time for releasing the continuous air filling button exceeds a second time period, the control module controls the emergency cut-off valve to be closed so as to stop air filling.
Optionally, a fault indicator is further included and is electrically connected to the control module, such that the control module controls the fault indicator based on the received fault signal.
Optionally, the unmanned LNG dispenser further includes a stretch-break detection sensor electrically connected to the control module for detecting whether the filling gun is stretch-broken, and generating and transmitting the fault signal to the control module when the filling gun is stretch-broken, and/or
The unmanned LNG dispenser further comprises a collision detection sensor, wherein the collision detection sensor is electrically connected to the control module, and is used for detecting whether the unmanned LNG dispenser collides, generating fault signals when the unmanned LNG dispenser collides and transmitting the fault signals to the control module.
Optionally, the system further comprises a power supply module, wherein the power supply module is used for supplying power to each power utilization unit of the unmanned LNG dispenser.
Optionally, the system further comprises an LED display screen, wherein the LED display screen is electrically connected to the control module and used for displaying the current operation state and transaction processing information.
Optionally, the control module comprises a master control module and a slave control module, and the master control module is connected with the slave control module through a 485 bus.
Drawings
The following drawings of embodiments of the present invention are included as part of the invention. Embodiments of the present invention and their description are shown in the drawings to explain the principles of the invention. In the drawings of which there are shown,
FIG. 1 is a schematic diagram of the frame structure of a dispenser according to a preferred embodiment of the invention;
FIG. 2 is a schematic perspective view of the dispenser of FIG. 1; and
fig. 3 is another perspective view of the dispenser of fig. 2.
Reference numerals illustrate:
100. unmanned LNG dispenser 110 and filling gun
120. Gun barrel of air return gun 130 and filling gun
140. Gun barrel 150 of air return gun and LED display screen
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that embodiments of the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present invention. It will be apparent that embodiments of the invention may be practiced without limitation to the specific details that are set forth by those skilled in the art.
The invention discloses an unmanned LNG dispenser 100 for dispensing gas to a vehicle-mounted tank of a vehicle. The unmanned LNG dispenser 100 may mainly include a filling gun 110, a gas line, a control module, a POS machine, a mass flowmeter, and an emergency cut-off valve.
The unmanned LNG dispenser 100 of the present invention will be described in detail with reference to fig. 1 to 3.
The gas delivery line communicates with the filler gun 110. In particular, gas lines are used to transfer LNG (i.e., liquefied natural gas). The filler gun 110 is for connection with an on-board tank of a vehicle, for example, the filler gun 110 may be inserted into a fill port of the on-board tank to fill the on-board tank with LNG. As shown in fig. 2 and 3, the filler gun 110 may be disposed on one side of the unmanned LNG dispenser 100, and one end (e.g., a lower end) of the filler gun 110 may be inserted into the filler gun barrel 130 located therebelow.
An emergency shut-off valve may be disposed on the gas line and electrically connected to the control module to open or close the gas line. The emergency shut-off valve serves to control LNG flow and safety during the execution of the actions of the unmanned LNG dispenser 100. In particular, the slam shut valve may be electrically connected to the slave module such that the slave module may control the slam shut valve to open or close the gas line.
The control module can comprise a main control module and a slave control module, and the main control module and the slave control module can be connected through a 485 bus. The processor of the main control module can be a high-performance ARM9 chip. The control module (e.g., a master control module) can implement the collection and processing of signals, coordinate the actions and functions of the dispenser, and implement the metering, calculation, display, fee deduction and safety protection of the unmanned LNG dispenser 100.
The POS machine is electrically connected to the control module, and the POS machine can pre-authorize the bank card and transmit an authorization signal to the control module. Specifically, a pre-authorization to swipe a card through a bank card, such as a credit card, is required at the POS before the air entrainment begins. The control module controls the emergency shut-off valve (for example, controls the emergency shut-off valve to open the gas pipeline) based on the authorization signal so as to carry out gas filling.
The mass flowmeter is electrically connected to the control module for detecting the mass of LNG injected into the on-board tank and transmitting the detected mass signal to the control module. Specifically, the mass flowmeter may be electrically connected to the main control module to be able to directly transmit the detected mass signal to the main control module. After the air filling is stopped, the control module generates a fee signal based on the quality signal and transmits the fee signal to the POS machine to finish fee deduction. Specifically, the main control module may read information such as the accumulated volume, density, temperature, etc. of the mass flowmeter to calculate a final cost signal, for example, transaction weight and amount information, etc. More specifically, a mass flow meter may be provided on the gas line downstream of the slam shut valve, or a mass flow meter may be provided on the filler gun 110 for measuring information such as the weight of LNG to be filled into the on-board tank.
The unattended LNG dispenser 100 may also include a gun detection sensor electrically connected to the control module for detecting the position of the gun 110 and transmitting a detected gun 110 position signal to the control module. Specifically, in the present embodiment, the filling gun detection sensor may be electrically connected to the slave control module, so as to transmit the detected position signal of the filling gun 110 to the slave control module, and further to the master control module. More specifically, a filler gun detection sensor may be disposed within the filler gun barrel 130 and capable of contacting the filler gun 110 to sense the position of the filler gun 110 such that the filler gun detection sensor will not be able to sense the filler gun 110 when the filler gun 110 is pulled from the filler gun barrel. Thus, by providing the filling gun detection sensor, it is possible to avoid that the filling gun is not pulled out from the filling gun barrel 130 at the start of filling, that is, the filling gun 110 is not inserted into the filling port of the vehicle-mounted tank of the vehicle, or that the filling gun 110 is not returned to the home position after the end of filling, for example, the filling gun barrel 130.
The unattended LNG dispenser 100 may further include an air return gun 120 and an air return gun detection sensor electrically connected to the control module for detecting the position of the air return gun 120 and transmitting a detected air return gun 120 position signal to the control module. Specifically, the air return gun detection sensor may be electrically connected to the slave control module to transmit the detected position signal of the filling gun 110 to the slave control module and further to the master control module.
More specifically, as shown in fig. 2 and 3, the return air gun 120 may be disposed on the same side of the unattended LNG dispenser 100 as the filler gun 110, and one end (e.g., the lower end) of the return air gun 120 may be insertable into the return air gun barrel 140 located therebelow. The air return gun detection sensor may be disposed within the air return gun barrel 140 and be capable of contacting the air return gun 120 to sense the position of the air return gun 120 such that the air return gun detection sensor will not be able to sense the air return gun 120 when the air return gun 120 is pulled from the air return gun barrel. Thus, by providing the air-return gun detection sensor, it is possible to avoid not pulling out the air-return gun from the air-return gun barrel 140 at the beginning of air return, that is, not connecting the air-return gun 120 to the vehicle-mounted tank of the vehicle, or to avoid not returning the air-return gun 120 to the home position after the end of air return, for example, to insert into the air-return gun barrel 140, while also avoiding dangerous operations of air-return while air-filling.
The unattended LNG dispenser 100 may further include an electrostatic ground clip and an electrostatic ground detection device electrically connected to the control module for detecting a state of the electrostatic ground clip and transmitting a detected ground signal to the control module. Specifically, the electrostatic grounding detection apparatus may be electrically connected to the main control module, so as to directly transmit the detected electrostatic grounding signal to the control module. Furthermore, in the invention, the electrostatic grounding clip can be required to be connected to carry out air filling so as to ensure the air filling safety.
The unmanned LNG dispenser 100 may further include a continuous air-filling button electrically connected to the control module, and when the time of pressing the continuous air-filling button exceeds a first time, the control module controls the emergency shut-off valve to open the gas pipeline for air-filling; when the time for releasing the continuous air filling button exceeds the second time period, the control module controls the emergency cut-off valve to be closed so as to stop air filling. Therefore, the high participation of a driver in the air-filling process is ensured, and accidents are avoided. In addition, the gassing process ends when the continuous gassing button is released for more than a third period of time. The third duration is longer than the second duration.
Specifically, the continuous air entrainment button may be electrically connected to the main control module. The first time period, the second time period, and the third time period may be preset. For example, the first duration may be 5 seconds, the second duration may be 3 seconds, the third duration may be 6 seconds, so that when the driver continuously presses the continuous air-filling button for more than 5 seconds, the control module controls the emergency cut valve to open the air-conveying pipeline for air-filling, when the duration of releasing the continuous air-filling button exceeds 3 seconds, the control module controls the emergency cut valve to close so as to stop air-filling, when the driver continuously presses the continuous air-filling button for more than 6 seconds, the air-filling process is finished, if the driver continuously presses the continuous air-filling button again within 3 seconds, no influence is generated, air-filling is continued, after that, the continuous air-filling button is pressed again for more than 3 seconds, air-filling is confirmed to be finished, no air-filling operation is performed, and after the current transaction is finished, the continuous air-filling button is pressed again so that air-filling can be performed again. It will be appreciated by those skilled in the art that the first duration is not limited to 5 seconds, the second duration is not limited to 3 seconds, the third duration is not limited to 6 seconds, the first duration may be greater than 5 seconds or less than 5 seconds, the second duration may be greater than 3 seconds or less than 3 seconds, the third duration may be greater than 6 seconds or less than 6 seconds, and the third duration is longer than the second duration, as desired.
The unattended LNG dispenser 100 may also include a fault indicator that is electrically connected to the control module such that the control module controls the fault indicator based on the received fault signal. Specifically, the fault indicator light may be electrically connected to the slave control module such that the master control module controls the fault indicator light based on the received fault signal for indicating whether the current unattended LNG dispenser 100 is available, i.e., whether a fault has occurred.
More specifically, the fault indicator light may include a green indicator light and a red indicator light. When the green indicator light is on, the current unattended LNG dispenser 100 is indicated to be normal and can be used; when the red indicator lights are on, it indicates that the current unattended LNG dispenser 100 has a fault and cannot be used. Alternatively, the fault indicator light may comprise only one indicator light. When the fault prompting lamp is green, the current unattended LNG dispenser 100 is indicated to be normal in all conditions and can be used; when the fault indicator light is red, it indicates that the current unattended LNG dispenser 100 has a fault and cannot be used.
The unattended LNG dispenser 100 may further include a break detection sensor electrically connected to the control module for detecting whether the filler gun 110 is broken or not, and generating a fault signal and transmitting to the control module when the filler gun 110 is broken. Specifically, the stretch-break detection sensor can be electrically connected with the slave control module to transmit a fault signal to the slave control module and then to the master control module. The main control module can control the fault indicator lamp based on the received fault signal and simultaneously can automatically train, shut down the valve pump and enter a maintenance state. More specifically, the filler gun 110 has an end interface at the other end (e.g., the upper end), and the break detection sensor may correspond to the end interface position of the filler gun 110 and be capable of contacting the end interface of the filler gun 110 to sense contact with the end interface of the filler gun 110 such that when the filler gun 110 is broken, the end interface is no longer in contact with the break detection sensor.
The unmanned LNG dispenser 100 may further include a collision detection sensor electrically connected to the control module, for detecting whether the unmanned LNG dispenser 100 collides, and generating the fault signal and transmitting the fault signal to the control module when the unmanned LNG dispenser 100 collides. Specifically, the collision detection sensor can be electrically connected with the slave control module to transmit the fault signal to the slave control module and further transmit the fault signal to the master control module. The main control module can control the fault indicator lamp based on the received fault signal and simultaneously can automatically train, shut down the valve pump and enter a maintenance state. More specifically, the unattended LNG dispenser 100 may include a plurality of collision detection sensors that may be disposed at locations where the unattended LNG dispenser 100 is susceptible to collisions.
The unattended LNG dispenser 100 may also include an LED display screen 150, the LED display screen 150 being electrically connected to the control module for displaying current operating status and transaction processing information. Specifically, the LED display lamp is electrically connected to the main control module, so as to be used for displaying the current transaction amount, transaction weight, and equivalent information, and meanwhile, the current operation of the unmanned LNG dispenser 100 can be shown in the form of images or characters, for example, when "group" is shown on the LED display screen 150, it is indicated that the grounding clip needs to be grounded.
The unmanned LNG dispenser 100 may further include a power module for powering various power units of the unmanned LNG dispenser 100. Specifically, the power module may provide voltages of 3.3V, 5.0V, and 24V to power the respective power units, respectively. For example, the power module may provide power to the master control module, the slave control module, the fault indicator light, the LED display 150, and the like.
The autonomous gas filling process of the unmanned LNG dispenser 100 of the present invention will be described in detail below with reference to fig. 1.
After the power-on initialization of the unmanned LNG dispenser 100 is completed, the main control module performs system inspection, and if all inspection results are normal, the main control module controls the green indicator lamp of the fault indicator lamp to be on so as to indicate that the current unmanned LNG dispenser 100 can be used.
Before the air filling starts, the bank card needs to be used for card swiping pre-authorization on the POS machine, and the POS machine transmits an authorization signal to the main control module, so that the air filling can be started at the moment. If the electrostatic grounding clip is not well grounded at this time, the electrostatic grounding detection device detects an electrostatic grounding failure and transmits a detected electrostatic grounding signal to the main control module, and the LED display screen 150 displays the grounding failure at this time to prompt an operator, such as a driver, to ground the electrostatic grounding clip, and after the electrostatic grounding clip is grounded, the grounding failure prompt on the LED display screen 150 disappears.
If the pressure in the vehicle tank is too high, then pressure relief is required, and when the air return gun 120 is lifted, the air return gun detection sensor detects that the air return gun 120 leaves the gun barrel 130, the unattended LNG dispenser 100 enters an air return mode. After the return air is completed, the return air gun 120 is retracted to the gun barrel 130. The filling gun 110 can then be lifted and inserted into the filling port of the vehicle-mounted tank, the continuous filling button is pressed, the slave control module controls the opening of the emergency shut-off valve to open the gas pipeline, and the unattended LNG dispenser 100 enters a filling mode.
In the air-filling process, the main control module continuously reads the quality signal transmitted by the mass flowmeter to acquire metering information, and calculates the transaction weight and the transaction amount to display on the LED display screen 150. When the air filling is completed, the main control module forms transaction information such as transaction amount, transaction weight, unit price and the like into transaction records, stores the transaction records simultaneously, transmits the transaction records as fee signals to the POS machine, and finally the POS machine finishes fee deduction and finishes the transaction. At this point, an operator, such as a driver, may unclamp the electrostatic grounding clamp and drive away.
When the unattended LNG dispenser 100 is collided, the collision sensor sends a fault signal to the main control module, and the main control module immediately enters the unattended LNG dispenser 100 into an unavailable state and controls a red indicator lamp of the fault indicator lamp to be on.
When the filling gun 110 is broken, the breaking sensor sends a fault signal to the main control module, and the main control module immediately enters the unattended LNG dispenser 100 into an unavailable state and controls the red indicator lamp of the fault indicator lamp to be on.
According to the unattended LNG dispenser 100 disclosed by the invention, the self-service filling of LNG by a driver can be realized, the self-service fee deduction operation can be realized, special filling personnel and cashier are not needed in the gas station, the filling efficiency can be greatly improved while the operation safety is ensured, less personnel are invested, and the construction cost of the gas station is reduced.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "disposed" or the like as used herein may refer to either one element being directly attached to another element or one element being attached to another element through an intermediate member. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.
Claims (9)
1. An unmanned LNG dispenser for dispensing gas to a vehicle-mounted tank of a vehicle, the unmanned LNG dispenser comprising:
a filling gun;
the gas transmission pipeline is communicated with the filling gun;
a control module;
the POS machine is electrically connected to the control module, and can pre-authorize the bank card and transmit an authorization signal to the control module;
a mass flow meter electrically connected to the control module for detecting the mass of LNG injected into the on-board tank and transmitting the detected mass signal to the control module;
the emergency cut-off valve is arranged on the gas transmission pipeline and is electrically connected to the control module so as to open or close the gas transmission pipeline; and
the continuous gas filling button is electrically connected to the control module, and when the time for pressing the continuous gas filling button exceeds a first time length, the control module controls the emergency cut-off valve to open the gas transmission pipeline so as to fill gas; when the time for loosening the continuous air filling button exceeds a second time length, the control module controls the emergency cut-off valve to be closed so as to stop air filling; when the time for releasing the continuous air filling button exceeds a third time period, the air filling process is ended,
wherein the first time period is longer than the second time period, and the third time period is longer than the first time period;
the control module controls the emergency cut-off valve based on the authorization signal so as to carry out air filling; and is also provided with
After the air filling is stopped, the control module generates a cost signal based on the quality signal and transmits the cost signal to the POS machine to finish fee deduction.
2. The unmanned LNG dispenser of claim 1, further comprising a filler detection sensor electrically connected to the control module for detecting the position of the filler and transmitting a detected filler position signal to the control module.
3. The unmanned LNG dispenser of claim 1, further comprising an air return gun and an air return gun detection sensor electrically connected to the control module for detecting the position of the air return gun and transmitting a detected air return gun position signal to the control module.
4. The unmanned LNG dispenser of claim 1, further comprising an electrostatic ground clip and an electrostatic ground detection device electrically connected to the control module for detecting the status of the electrostatic ground clip and transmitting a detected ground signal to the control module.
5. The unmanned LNG dispenser of claim 1, further comprising a fault indicator light electrically connected to the control module such that the control module controls the fault indicator light based on the received fault signal.
6. The unmanned LNG dispenser of claim 1, wherein,
the unmanned LNG dispenser further comprises a stretch-break detection sensor electrically connected to the control module for detecting whether the filling gun is stretch-broken, generating a fault signal and transmitting the fault signal to the control module when the filling gun is stretch-broken, and/or
The unmanned LNG dispenser further comprises a collision detection sensor, wherein the collision detection sensor is electrically connected to the control module, and is used for detecting whether the unmanned LNG dispenser collides, generating a fault signal when the unmanned LNG dispenser collides and transmitting the fault signal to the control module.
7. The unmanned LNG dispenser of claim 1, further comprising a power module for powering each of the power units of the unmanned LNG dispenser.
8. The unmanned LNG dispenser of claim 1, further comprising an LED display screen electrically connected to the control module for displaying current operating status and transaction processing information.
9. The unmanned LNG dispenser of claim 1, wherein the control module includes a master control module and a slave control module, the master control module and the slave control module being connected by a 485 bus.
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