CN106224763B - The monobus control device and method of LNG filling machine multimachines interconnection - Google Patents
The monobus control device and method of LNG filling machine multimachines interconnection Download PDFInfo
- Publication number
- CN106224763B CN106224763B CN201610791129.8A CN201610791129A CN106224763B CN 106224763 B CN106224763 B CN 106224763B CN 201610791129 A CN201610791129 A CN 201610791129A CN 106224763 B CN106224763 B CN 106224763B
- Authority
- CN
- China
- Prior art keywords
- bus
- filling machine
- aerating
- signal end
- filling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- 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
- 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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- 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
- F17C2265/063—Fluid distribution for supply of refueling stations
Abstract
The present invention relates to a kind of monobus control device and methods of LNG filling machines multimachine interconnection, more filling machines are connected by a bus cable, every filling machine can controlling bus cable at any time bus level, to controlling bus cable, other filling machines execute relevant procedure operation according to the variation of bus level, there is no master-slave between each filling machine, only pass through a bus cable, realize the interlocking between more filling machines of single pump, the phenomenon that causing to jump rifle when avoiding less than to the filling machine aerating in another fueling process when a filling machine aerating or precooling operation.
Description
Technical field
The invention belongs to aerating technical fields, are related to filling machine control technology, specifically, being related to a kind of LNG filling machines
The monobus control device and method of multimachine interconnection is applied to liquefied natural gas (English：Liquefied Natural Gas, contracting
It writes：LNG) single pump mutual lock control of multimachine of filling machine.
Background technology
Common more filling machines of LNG filling machine generally uses share the progress of one or more immersed pump currently on the market
The filling of LNG.But it when a filling machine carries out LNG aeratings or precooling operation, easily leads in another filling machine fueling process
Occur jumping rifle phenomenon when aerating is less than.Currently used settling mode is to be interlocked using single pump two-shipper, but encounter single pump multimachine (three
Platform and the above filling machine) when, still can exist aerating it is less than when occur jump rifle the phenomenon that.
Invention content
Occur jumping rifle when aerating is less than in filling machine fueling process when the present invention is for single pump multimachine of the existing technology
The problem of phenomenon, provides a kind of monobus control device and method of LNG filling machines multimachine interconnection, the control device and method
Solve the problems, such as that rifle phenomenon is jumped in the less than appearance of filling machine aerating occurred when single pump multimachine aerating.
In order to achieve the above object, the present invention provides a kind of monobus control device of LNG filling machines multimachine interconnection, packets
Include more filling machines and bus cable, the control unit input signal end of every filling machine and output signal end with the bus
Cable connection.More filling machines are connected with each other by a bus cable, realize the interlocking between more filling machines, every aerating
The bus level of the controllable bus cable of the control unit of machine, realizes monobus control function, avoids occurring when multimachine aerating
The less than appearance of filling machine aerating jump rifle phenomenon.
As the preferred design of the above-mentioned monobus control device of the present invention, the bus cable includes communication bus and public
Ground wire, the control unit input signal end of every filling machine and output signal end are connect with the communication bus.
As the preferred design of the above-mentioned monobus control device of the present invention, the communication bus by input circuit with it is described
Input signal end connects, and the communication bus is connect by output circuit with the output signal end, the common ground line point
It is not connect with the ground terminal of input circuit and output circuit.
As the preferred design of the above-mentioned monobus control device of the present invention, the input circuit be by optocoupler detection circuit and
The series circuit of inductance composition, one end of inductance are connect with communication bus, the input of the other end and optocoupler detection circuit of inductance
End connection, the output end of optocoupler detection circuit are connect with the input signal end.
As the preferred design of the above-mentioned monobus control device of the present invention, the output circuit is by triode Q1, two poles
Pipe D2, resistance R15, inductance R26, inductance R27 and inductance R31 form series-parallel circuit；The emitter of the triode Q1 connects
Power supply, the anode of the collector connection diode D2 of the triode Q1, the cathode of diode D2 are connect with communication bus；It is described
The one end resistance R15 is connected between the cathode and communication bus of diode D2, other end ground connection；One end the inductance R26 and three
The collector of pole pipe Q1 connects, other end ground connection；The one end the inductance R27 is connect with the output signal end, other end connection
The base stage of triode Q1, the one end the inductance R31 connect power supply, and the other end is connect with the base stage of triode Q1.
As the further design of the above-mentioned monobus control device of the present invention, the input circuit and the input signal end
Between, isolating chip is respectively connected between the output circuit and the output signal end, ensure filling machine control unit with it is outer
Portion's circuit is mutually isolated.
As the preferred design of the above-mentioned monobus control device of the present invention, the more filling machines connect same latent liquid
Pump.
In order to achieve the above object, the present invention also provides a kind of LNG filling machines multimachine interconnection monobus control method,
Contain following steps：
Connect control unit input signal end and the output signal end of more filling machines, root simultaneously by a bus cable
According to the bus level of the working state control bus cable of filling machine；
When at least one filling machine executes aerating in more at any one time filling machines, the filling machine for executing aerating passes through
The output signal end of control unit sends control command to bus cable, and the bus level of bus cable is set height, is not carried out and adds
The bus level that the filling machine of gas detects bus cable by the input signal end of control unit is height；
When executing aerating there are at least one filling machine in all filling machines for executing aerating, the bus electricity of bus cable
It is flat still to set height；
After all filling machines for executing aerating terminate aerating, filling machine is sent by the output signal end of control unit
Control command sets low the bus level of bus cable to bus cable；
When all filling machines are standby, the bus level of bus cable is low.
As the preferred design of the above-mentioned monobus control method of the present invention, the working condition of filling machine and bus cable it is total
Relationship between line level is:
When filling machine is standby, filling machine is set the bus level of bus cable by the output signal end of control unit
It is low, all filling machine state consistencies；
When any filling machine executes aerating, and only a filling machine executes aerating, the filling machine for executing aerating is logical
The bus level of bus cable is set height by the output signal end for crossing control unit, remaining filling machine is believed by the input of control unit
Number end detect bus cable bus level be high level, at the end of aerating, the filling machine for executing aerating passes through control unit
Output signal end the bus level of bus cable is set low；
When at least two filling machines execute aerating, filling machine is by the output signal end of control unit by bus cable
Bus level sets height, if wherein filling machine aerating operation terminates, other filling machines still carry out aerating, bus cable it is total
Line level still maintains high level；After waiting for all filling machine aeratings operation, output signal that filling machine passes through control unit
End sets low the bus level of bus cable；
When at least two filling machines are performed simultaneously aerating, the filling machine for executing aerating passes through the output signal of control unit
It holds while sending control command to bus cable, the bus level of bus cable is set into height, execute the filling machine of aerating while leading to
The input signal end for crossing control unit receives the bus level information of bus cable, after waiting for all filling machine aerating operations,
The filling machine for terminating aerating is simultaneously set low the bus level of bus cable by the output signal end of control unit.
As the preferred design of the above-mentioned monobus control method of the present invention, the bus cable includes communication bus and public
Ground wire, the input signal end of every filling machine control unit and output signal end connects with the communication bus, and every adds
The common end of mechanism of qi control unit is connect with common ground line, and the bus level of bus cable is the bus level of communication bus.
Compared with prior art, the advantages and positive effects of the present invention are：
(1) more filling machines are passed through one by the monobus control device of LNG filling machines multimachine interconnection provided by the invention
Bus cable connects, every filling machine can controlling bus cable at any time bus level, to controlling bus cable, Qi Tajia
Mechanism of qi executes relevant procedure operation according to the variation of bus level, does not have master-slave between each filling machine, only passes through one
Bar bus cable realizes the interlocking between more filling machines of single pump, to another when avoiding a filling machine aerating or precooling operation
Filling machine aerating in a fueling process causes the phenomenon that jumping rifle when less than.
(2) the monobus control device of LNG filling machines multimachine interconnection provided by the invention, is only connected by a bus cable
More filling machines are connect, wiring is simple, easy to operate, of low cost, is suitable for the connection between filling machine when single pump multimachine application,
Every filling machine can send control command to bus cable with any time, and the time restriction not limited by other filling machines is more
Platform filling machine can be simultaneously emitted by control command to bus cable, controlling bus state；More filling machines can also receive always simultaneously
The bus state information of line cable.
(3) the monobus control method of LNG filling machines multimachine provided by the invention interconnection passes through simply clearly monobus
Connection type controls the bus level of monobus, according to the state of bus level, each filling machine using the control unit of filling machine
The operation of the corresponding programs such as aerating is executed, method is simple, easy to operate and realize.
Description of the drawings
Fig. 1 is the structure diagram of the monobus control device of four machine of one embodiment of the invention LNG filling machines interconnection.
Fig. 2 is the circuit diagram of input circuit in the embodiment of the present invention.
Fig. 3 is the circuit diagram of output circuit in the embodiment of the present invention.
To the control flow chart of communication bus when Fig. 4 is three filling machines execution aeratings in a certain embodiment of the present invention.
1, the first filling machine, the 2, second filling machine, 3, third filling machine, the 4, the 4th filling machine, 5, bus cable, 51, logical
Believe bus, 52, common ground line.
Specific implementation mode
In the following, the present invention is specifically described by illustrative embodiment.It should be appreciated, however, that not into one
In the case of step narration, element, structure and features in an embodiment can also be advantageously incorporated into other embodiment
In.In addition, term " first ", " second ", " third ", " the 4th " and " the 5th " is used for description purposes only, and should not be understood as referring to
Show or imply relative importance.
In one embodiment of the invention, referring to Fig. 1, a kind of monobus control of four machine of LNG filling machines interconnection is provided
Device processed, include connection same immersed pump four filling machines and a bus cable 5, four filling machines be respectively first plus
Mechanism of qi 1, the second filling machine 2, third aerating 3, the 4th filling machine 4, the control unit input signal end of every filling machine and output
Signal end is connect with the bus cable.Four filling machines are connected with each other by a bus cable, realize four aeratings
Interlocking between machine, the bus level of the controllable bus cable of control unit of every filling machine, realizes that monobus controls work(
Can, avoid the less than appearance of the filling machine aerating occurred when multimachine aerating from jumping rifle phenomenon.
For the ease of four filling machines of connection, in the monobus control device described in the above embodiment of the present invention, referring to figure
1, the bus cable 5 include communication bus 51 and common ground line 52, the control unit input signal end of every filling machine and
Output signal end is connect with the communication bus.
In order to realize the signal transmission between communication bus and input signal end, between communication bus and output signal end,
In the monobus control device described in the above embodiment of the present invention, referring to Fig. 2, the communication bus by input circuit with it is described
Input signal end connects, and the communication bus is connect by output circuit with the output signal end, the common ground line point
It is not connect with the ground terminal of input circuit and output circuit.The control unit of any filling machine can be connect by input circuit
Receive the bus level state of communication bus；The control unit of any filling machine exports high level by output circuit and can incite somebody to action
The bus level of communication bus sets height.
In order to realize that the information between communication bus and input signal end is transmitted, referring to Fig. 2, in the above embodiment of the present invention
In the monobus control device, the input circuit is the series circuit being made of optocoupler detection circuit and inductance R76, inductance
One end of R76 is connect with communication bus, and the other end of inductance R76 is connect with the input terminal of optocoupler detection circuit, optocoupler detection electricity
The output end on road is connect with the input signal end.Input circuit detects the bus level that single channel detects communication bus by optocoupler
After state, this state is passed through into the input signal end of optocoupler output HUSUO_GL to filling machine control unit.Input circuit into
When row information is transmitted, when the communication bus free time, the bus level of communication bus is low, and photoelectrical coupler U34 is in cut-off shape
State, optocoupler output HUSUO_GL export low level, and low level signal is transmitted to the input signal of filling machine control unit
End, filling machine control unit handle the low level signal received；When the bus level of communication bus is high, photoelectricity
Coupler U34 conducting, optocoupler output HUSUO_GL export high level, and low and high level signal transmission is to filling machine control unit
Input signal end, filling machine control unit handles the low level signal received.
In order to realize that the information between communication bus and output signal end is transmitted, referring to Fig. 3, in the above embodiment of the present invention
In the monobus control device, the output circuit is by triode Q1, diode D2, resistance R15, inductance R26, inductance
R27 and inductance R31 form series-parallel circuit；The emitter of the triode Q1 connects power supply, the collector of the triode Q1
The anode of diode D2 is connected, the cathode of diode D2 is connect with communication bus；The one end the resistance R15 is connected to diode D2
Cathode and communication bus between, the other end ground connection；The one end the inductance R26 is connect with the collector of triode Q1, the other end
Ground connection；The one end the inductance R27 is connect with the output signal end, the base stage of other end connecting triode Q1, the inductance R31
One end connects power supply, and the other end is connect with the base stage of triode Q1.When output circuit is transmitted into row information, filling machine control unit
Output wire size end transmit OUT1_GL signals, when OUT1_GL signals are high, triode Q1 cut-off, diode D2 cut-offs, bus
Level is dragged down by R15；When OUT1_GL signals are low, triode Q1 conductings, diode D2 is connected, and bus level sets height.
When four filling machines are standby, the bus level of communication bus is low, every filling machine state consistency, all filling machines
State becomes circulating valve opening, and air entraining valve is closed.When at a time any filling machine executes aerating operation, by communication bus
Bus level sets height, and the input signal end of excess-three platform filling machine control unit detects that the bus level of communication bus is high electricity
It is flat, air entraining valve is closed, to ensure that the LNG liquid of immersed pump output all flows through the filling machine just operate in aerating into vehicle-mounted
Bottle, without flowing back to storage tank.After aerating, the bus level of communication bus is set low.
In entire fueling process, if only the first filling machine executes aerating operation, after aerating, the first filling machine control
The output signal end output signal of unit processed is low, and the bus level of communication bus is set low.If executed in the first filling machine
In fueling process, one or more of the second filling machine, third filling machine, the 4th filling machine also execute aerating operation, execute
The bus level of communication bus can be set height by other filling machines of aerating operation.Therefore, even if the first filling machine aerating operation knot
Shu Hou sets low the bus level of communication bus, but due to still there is the control unit of other filling machines to pass through its output signal
The bus level of end control communication bus sets height, and the bus level of communication bus still can keep high level.First filling machine knot
Shu Jiaqi also can only close air entraining valve, and circulating valve is kept to be still within closed state.If the first filling machine, the second aerating
At least two filling machines are performed simultaneously aerating operation in machine, third filling machine, the 4th filling machine, execute the filling machine of aerating operation
Control command is exported by the output signal end of control unit simultaneously, the bus level of communication bus is set into height.When all execution
After the filling machine of aerating completes aerating operation, the bus level of communication bus is set low, at this time the bus level of communication bus because
All filling machine output levels become low level to be low.Aerating terminates, and all filling machines open circulating valve, closes air entraining valve,
Into standby mode.
Single line control apparatus in the present embodiment realizes the interlocking of four LNG filling machines, realizes the list of four LNG filling machines
Bus marco.
In another embodiment of the present invention, in order to ensure that filling machine control unit and external circuit are mutually isolated, institute
It states between input circuit and the input signal end, be respectively connected with isolated core between the output circuit and the output signal end
Piece, the output signal end of filling machine control unit transmit a signal to isolating chip, isolating chip by output circuit export to
After input circuit detects the state of communication bus, the defeated of filling machine control unit is transmitted to by isolating chip for communication bus
Enter signal end, filling machine control unit handles the status information of the communication bus of acquisition.
In yet another embodiment of the present invention, a kind of monobus control method of four machine of LNG filling machines interconnection is provided,
Contain following steps：
Step 1：Four filling machines for connecting same immersed pump are attached simultaneously by a bus cable, according to
The bus level of the working state control bus cable of filling machine；The bus cable includes communication bus and common ground line,
The input signal end of every filling machine control unit and output signal end are connect with the communication bus, every filling machine control
The common end of unit is connect with common ground line, and the bus level of bus cable is the bus level of communication bus.
Step 2：At any one time when any filling machine executes aerating, and an only filling machine in four filling machines
When executing aerating, the bus level of communication bus is set height by the filling machine for executing aerating by the output signal end of control unit,
The input signal end of remaining filling machine control unit detects that the bus level of communication bus is high level, at the end of aerating, holds
The filling machine of row aerating is set low the bus level of communication bus by the output signal end of control unit；
Step 3：When at least two filling machines execute aerating in four filling machines of any time, and asked in different moments
Execution aerating is asked, more filling machines of filling machine is executed and control command is sent to communication by the output signal end of control unit respectively
The bus level of communication bus is set height by bus, if wherein a filling machine aerating operation terminates, other filling machines still carry out
The bus level of aerating, communication bus still maintains high level；
Step 4：When four at least two filling machines of filling machine are performed simultaneously aerating, the filling machine for executing aerating passes through
The output signal end of control unit sends control command to communication bus simultaneously, and the bus level of communication bus is set height, executes
The filling machine of aerating receives the bus level information of communication bus by the input signal end of control unit simultaneously；
Step 5：After all filling machines for executing aerating terminate aerating, the control unit output signal end of filling machine
Control command is sent to communication bus, the bus level of communication bus is set low；
Step 6：After all filling machine aeratings, the output signal that passes through control unit into standby mode, filling machine
End sets low the bus level of bus cable, all filling machine state consistencies.
The present embodiment realizes the interlocking monobus control of four LNG filling machines.
In some embodiment of the present invention, and provide a kind of monobus control dress of three machine of LNG filling machines interconnection
It sets, includes three filling machines and a bus cable of same immersed pump of connection, the control unit input letter of every filling machine
Number end and output signal end connect with the bus cable.Three filling machines are connected with each other by a bus cable, are realized
Interlocking between three filling machines.The list of four machine of the LNG filling machines interconnection provided in its operation principle and above-described embodiment is total
The operation principle of thread control device is identical.
In the entire fueling process of three filling machines, if only the first filling machine executes aerating operation, after aerating,
The output signal end output signal of first filling machine control unit is low, and the bus level of communication bus is set low.If
One filling machine executes in fueling process, and one or two of the second filling machine, third filling machine also execute aerating operation, execute
The bus level of communication bus can be set height by other filling machines of aerating operation.Therefore, even if the first filling machine aerating operation knot
Shu Hou sets low the bus level of communication bus, but due to still there is the control unit of other filling machines to pass through its output signal
The bus level of end control communication bus sets height, and the bus level of communication bus still can keep high level.First filling machine knot
Shu Jiaqi also can only close air entraining valve, and circulating valve is kept to be still within closed state.When all filling machines for executing aerating are complete
After being operated at aerating, the bus level of communication bus is set low, the bus level of communication bus is exported because of all filling machines at this time
Level becomes low level to be low.Aerating terminates, and all filling machines open circulating valve, air entraining valve is closed, into standby mode.
Referring to Fig. 4, three filling machines execute as follows to the control of communication bus when aerating：At the T1 moment, the first filling machine
It is performed simultaneously aerating with the second filling machine, is simultaneously emitted by high level signal, communication bus Lothrus apterus.T2 moment, third filling machine
Aerating is executed, high level signal is sent out, at this point, the realization simultaneously of the first filling machine, the second filling machine, third filling machine is total to communicating
The bus level of line controls, the bus level Lothrus apterus of communication bus.Bus electricity of the T3 and T4 moment filling machine to communication bus
It is flat to be read out and signal is handled.
Single line control apparatus in the present embodiment realizes the interlocking of three LNG filling machines, realizes the list of three LNG filling machines
Bus marco.
In some embodiment of the present invention, a kind of monobus control method of three machine of LNG filling machines interconnection is provided,
Its step and the monobus control method of four machine of the LNG filling machines interconnection provided in above example are essentially identical, unlike：
In step 1, three filling machines for connecting same immersed pump are attached simultaneously by a bus cable,
According to the bus level of the working state control bus cable of filling machine；The bus cable includes communication bus and common ground
Line, the input signal end of every filling machine control unit and output signal end are connect with the communication bus, every filling machine
The common end of control unit is connect with common ground line, and the bus level of bus cable is the bus level of communication bus.
In step 2, at any one time when the execution aerating of any filling machine in three filling machines, and only one adds
Mechanism of qi executes aerating.
In step 3, when at least two filling machines execute aerating in three filling machines of any time.
The interlocking monobus control of three LNG filling machines is realized in the present embodiment.
In some embodiment of the present invention, and provide a kind of monobus control dress of five machine of LNG filling machines interconnection
It sets, includes five filling machines and a bus cable of same immersed pump of connection, the control unit input letter of every filling machine
Number end and output signal end connect with the bus cable.Five filling machines are connected with each other by a bus cable, are realized
Interlocking between five filling machines.The list of four machine of the LNG filling machines interconnection provided in its operation principle and above-described embodiment is total
The operation principle of thread control device and the monobus control device of three machine of LNG filling machines interconnection is identical.
In the entire fueling process of five filling machines, if only the first filling machine executes aerating operation, after aerating,
The output signal end output signal of first filling machine control unit is low, and the bus level of communication bus is set low.If
One filling machine executes in fueling process, one in the second filling machine, third filling machine, the 4th filling machine, the 5th filling machine or
Multiple also to execute aerating operation, height can be set by the bus level of communication bus by executing other filling machines of aerating operation.Therefore, i.e.,
After so that the first filling machine aerating is operated, the bus level of communication bus is set low, but due to still there are other filling machines
The bus level that control unit controls communication bus by its output signal end sets height, and the bus level of communication bus still can protect
Hold high level.First filling machine, which terminates aerating, also can only close air entraining valve, and circulating valve is kept to be still within closed state.Work as institute
After thering is the filling machine for executing aerating to complete aerating operation, the bus level of communication bus is set low, at this time the bus of communication bus
Level becomes low level because all filling machine output levels is low.Aerating terminates, and all filling machines open circulating valve, closes and adds
Air valve, into standby mode.
Single line control apparatus in the present embodiment realizes the interlocking of five LNG filling machines, realizes the list of five LNG filling machines
Bus marco.
In some embodiment of the present invention, a kind of monobus control method of five machine of LNG filling machines interconnection is provided,
Its step is equally essentially identical with the monobus control method of four machine of the LNG filling machines interconnection provided in above example, different
Be：
In step 1, five filling machines for connecting same immersed pump are attached simultaneously by a bus cable,
According to the bus level of the working state control bus cable of filling machine；The bus cable includes communication bus and common ground
Line, the input signal end of every filling machine control unit and output signal end are connect with the communication bus, every filling machine
The common end of control unit is connect with common ground line, and the bus level of bus cable is the bus level of communication bus.
In step 2, at any one time when the execution aerating of any filling machine in five filling machines, and only one adds
Mechanism of qi executes aerating.
In step 3, when at least two filling machines execute aerating in five filling machines of any time.
The interlocking monobus control of five LNG filling machines is realized in the present embodiment.
Above-described embodiment is used for explaining the present invention, rather than limits the invention, in the spirit and right of the present invention
It is required that protection domain in, to any modifications and changes for making of the present invention, both fall within protection scope of the present invention.
Claims (7)
1. a kind of monobus control device of LNG filling machines multimachine interconnection, which is characterized in that including more filling machines and bus electricity
Cable, the control unit input signal end of every filling machine and output signal end are connect with the bus cable；Described more add
Mechanism of qi connects same immersed pump；The bus cable includes communication bus and common ground line, the control list of every filling machine
First input signal end and output signal end are connect with the communication bus；The communication bus by input circuit with it is described defeated
Enter signal end connection, the communication bus is connect by output circuit with the output signal end, and the output circuit is by three
Pole pipe Q1, diode D2, resistance R15, inductance R26, inductance R27 and inductance R31 form series-parallel circuit；The triode Q1's
Emitter connects power supply, the anode of the collector connection diode D2 of the triode Q1, the cathode of diode D2 and communicates always
Line connects；The one end the resistance R15 is connected between the cathode and communication bus of diode D2, other end ground connection；The inductance
The one end R26 is connect with the collector of triode Q1, other end ground connection；The one end the inductance R27 is connect with the output signal end,
The base stage of other end connecting triode Q1, the one end the inductance R31 connect power supply, and the other end is connect with the base stage of triode Q1.
2. the monobus control device of LNG filling machines multimachine interconnection as described in claim 1, which is characterized in that described public
Ground wire is connect with the ground terminal of input circuit and output circuit respectively.
3. the monobus control device of LNG filling machines multimachine interconnection as claimed in claim 2, which is characterized in that the input
Circuit is the series circuit being made of optocoupler detection circuit and inductance, and one end of inductance is connect with communication bus, inductance it is another
End is connect with the input terminal of optocoupler detection circuit, and the output end of optocoupler detection circuit is connect with the input signal end.
4. the monobus control device of the LNG filling machine multimachines interconnection as described in claims 1 to 3 any one, feature exist
In being respectively connected between the input circuit and the input signal end, between the output circuit and the output signal end
Isolating chip.
5. a kind of monobus control method of LNG filling machines multimachine interconnection, which is characterized in that contain following steps：Pass through one
Bus cable connects control unit input signal end and the output signal end of more filling machines simultaneously, according to the work shape of filling machine
The bus level of state controlling bus cable；
When at least one filling machine executes aerating in more at any one time filling machines, the filling machine for executing aerating passes through control
The output signal end of unit sends control command to bus cable, and the bus level of bus cable is set height, is not carried out aerating
The bus level that filling machine detects bus cable by the input signal end of control unit is height；
When executing aerating there are at least one filling machine in all filling machines for executing aerating, the bus level of bus cable is still
So set height；
After all filling machines for executing aerating terminate aerating, filling machine sends control by the output signal end of control unit
Order sets low the bus level of bus cable to bus cable；
When all filling machines are standby, the bus level of bus cable is low.
6. the monobus control method of LNG filling machines multimachine interconnection as claimed in claim 5, which is characterized in that filling machine
Relationship between working condition and the bus level of bus cable is:
When filling machine is standby, filling machine is set low the bus level of bus cable by the output signal end of control unit, institute
There is filling machine state consistency；
When any filling machine executes aerating, and only a filling machine executes aerating, the filling machine for executing aerating passes through control
The bus level of bus cable is set height by the output signal end of unit processed, the input signal end that remaining filling machine passes through control unit
Detect that the bus level of bus cable is high level, at the end of aerating, the filling machine for executing aerating passes through the defeated of control unit
Go out signal end to set low the bus level of bus cable；
When at least two filling machines execute aerating, filling machine is by the output signal end of control unit by the bus of bus cable
Level sets height, if wherein a filling machine aerating operation terminates, other filling machines still carry out aerating, the bus electricity of bus cable
Flat to still maintain high level, after waiting for all filling machine aerating operations, filling machine will by the output signal end of control unit
The bus level of bus cable is set low；
When at least two filling machines are performed simultaneously aerating, the filling machine for executing aerating is same by the output signal end of control unit
When send control command to bus cable, the bus level of bus cable is set into height, the filling machine of aerating is executed while passing through control
The input signal end of unit processed receives the bus level information of bus cable, after waiting for all filling machine aerating operations, terminates
The filling machine of aerating is simultaneously set low the bus level of bus cable by the output signal end of control unit.
7. such as the monobus control method of LNG filling machines multimachine described in claim 5 or 6 interconnection, which is characterized in that described total
Line cable includes communication bus and common ground line, the input signal end of every filling machine control unit and output signal end with
The communication bus connection, the common end of every filling machine control unit are connect with common ground line, the bus electricity of bus cable
Equal the bus level for communication bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791129.8A CN106224763B (en) | 2016-08-31 | 2016-08-31 | The monobus control device and method of LNG filling machine multimachines interconnection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610791129.8A CN106224763B (en) | 2016-08-31 | 2016-08-31 | The monobus control device and method of LNG filling machine multimachines interconnection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224763A CN106224763A (en) | 2016-12-14 |
| CN106224763B true CN106224763B (en) | 2018-08-24 |
Family
ID=58073634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610791129.8A Active CN106224763B (en) | 2016-08-31 | 2016-08-31 | The monobus control device and method of LNG filling machine multimachines interconnection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106224763B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224074B (en) * | 2018-01-10 | 2020-09-08 | 重庆耐德能源装备集成有限公司 | Gas filling gun interlocking method and system of LNG (liquefied Natural gas) filling machine |
| CN108799835A (en) * | 2018-05-19 | 2018-11-13 | 杰瑞石油天然气工程有限公司 | A kind of LNG rush-harvesting and rush-plantings filling machine pipe-line system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203248992U (en) * | 2013-05-08 | 2013-10-23 | 郑州格瑞克石油设备有限公司 | CNG double-gun double-line double-metering larger-flow gas dispenser |
| CN204227029U (en) * | 2014-11-13 | 2015-03-25 | 淄博华创燃气设备开发有限公司 | The multi-gun gas dispenser of a kind of energy communication |
| CN204774673U (en) * | 2015-02-10 | 2015-11-18 | 陕西重型汽车有限公司 | Display system is gathered to natural gas liquid volume based on CAN bus communication |
| CN206036646U (en) * | 2016-08-31 | 2017-03-22 | 杰瑞石油天然气工程有限公司 | LNG adds unibus controlling means of mechanism of qi multimachine interconnection |
-
2016
- 2016-08-31 CN CN201610791129.8A patent/CN106224763B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106224763A (en) | 2016-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208063168U (en) | A kind of high voltage isolation interlocking switch circuit | |
| CN101771700B (en) | Modbus protocol communication node based on FPGA | |
| CN106224763B (en) | The monobus control device and method of LNG filling machine multimachines interconnection | |
| CN209692733U (en) | A kind of radio-frequency devices automatic debugging device based on RF switch matrix | |
| CN105721059B (en) | Profibus-DP photoelectric signal transformation systems | |
| CN102608990A (en) | ECU (Electronic Control Unit) actuator control signal fault injection device for engine HILS (Hardware-In-the-Loop Simulation) system | |
| CN206036646U (en) | LNG adds unibus controlling means of mechanism of qi multimachine interconnection | |
| CN206451170U (en) | A kind of multi-serial extension equipment | |
| CN109687863A (en) | The driving circuit of RS485 chip | |
| CN202720638U (en) | Serial conversion circuit | |
| CN104109938B (en) | Textile device and control circuit board of automatic equipment | |
| CN108105076A (en) | The water pump control circuit and system of a kind of Nuclear Power Station Factory Building | |
| CN209358569U (en) | Differential signaling bus circuit | |
| CN210222557U (en) | Comprehensive protection measurement and control device based on PLC | |
| CN107346295A (en) | A kind of data transmission cable and data transmission method | |
| CN201927018U (en) | Automatic wire holder for 2<8N>/2 paths of household appliances capable of realizing output data management through interconnecting lines of serial port | |
| CN209267569U (en) | A kind of improved 485 automatic transceiving circuit | |
| CN207424728U (en) | A kind of On-off signal exports multiplex interface circuit | |
| CN208158906U (en) | A kind of shared MIFI terminal structure of included charging cable | |
| CN105245251B (en) | A kind of data buffering method based on carrier communication | |
| CN108733587A (en) | Sub- equipment localization method and system | |
| CN207263715U (en) | Gas analyzer quantity of state output conversion device | |
| CN205453705U (en) | Profibus -DP photoelectric signal conversion system | |
| CN209390062U (en) | A kind of network communication control module | |
| CN205594424U (en) | Numerical control apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |