CN106437912B - A kind of natural gas pressure difference generating system and its control method - Google Patents
A kind of natural gas pressure difference generating system and its control method Download PDFInfo
- Publication number
- CN106437912B CN106437912B CN201610978363.1A CN201610978363A CN106437912B CN 106437912 B CN106437912 B CN 106437912B CN 201610978363 A CN201610978363 A CN 201610978363A CN 106437912 B CN106437912 B CN 106437912B
- Authority
- CN
- China
- Prior art keywords
- power
- control cabinet
- plc control
- natural gas
- excitation
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses a kind of natural gas pressure difference generating system and its control methods,Electricity generation system includes solenoid valve,Electric control valve,Fluid motor,Excitation explosion-proof power generator,PLC control cabinet,Voltage stabilization and frequency stabilization device,Inverter,Accumulator group and ups power,Solenoid valve,Electric control valve and fluid motor are mounted on power generation pipeline,Excitation explosion-proof power generator is connect with fluid motor,PLC control cabinet and solenoid valve,Electric control valve,The excitation module of excitation explosion-proof power generator is connected with ups power,Excitation explosion-proof power generator is connect with the input terminal of voltage stabilization and frequency stabilization device again after being connect with the measure voltage ＆amp in PLC control cabinet,Voltage stabilization and frequency stabilization device is connect with the input terminal of PLC control cabinet and inverter respectively,Inverter is connect with accumulator group,Accumulator group is connect with ups power,Ups power is connect with PLC control cabinet,It is with simple in structure,Safety and stability,Power quality is good,The advantages of high degree of automation.Control method has the characteristics that logic is reasonable, controllability is strong, safe.
Description
Technical field
The present invention relates to a kind of generating equipments, more particularly, to a kind of for being using what natural gas pressure difference generated electricity
System, and to method that the system is controlled.
Background technology
Natural gas is essential important energy source in people's life, and conveying is needed by the pick-up from high pressure to low pressure
Process can just be used by people.Currently, in gas distributing system mainly by be arranged pressure regulation station so as to carry out from high pressure to
The transformation of low pressure, and can have a large amount of pressure energy of natural gas during pressure regulation, if cannot efficiently use can cause resource
Waste.In recent years, for using the pressure energy generated during natural gas pressure regulating, those skilled in the art research and develop
The project to be generated electricity using pressure energy of natural gas, it is public such as the Chinese invention patent application of Publication No. CN104213939A
A kind of natural gas pipe network pressure energy recycling power generator is opened, and by using PLC combinations solenoid valve, pressure transmitter, leakage
Detector and sealer sled realize the operating status of automatic monitoring power generator, but its fluctuation of service, power quality can not
Ensure, and its scale is smaller cannot be satisfied large and medium-sized electricity consumption needs.In addition, its gas outlet pressure transient, affects
With gas end normal use.The for another example Chinese invention patent application of Publication No. CN204851334U, it discloses a kind of intelligence
Change natural gas pipe network pressure energy power generator, is equally a kind of natural gas power generation device of small power generation scale, not only generates electricity
Power is smaller, and cannot be satisfied the electricity consumption needs of equipment after ensureing to shut down.It can be seen that existing utilize pressure energy of natural gas
It is not high, lasting to be mainly manifested in power generation scale is smaller, fluctuation of service, power quality there is also more defects are stored up for the device of power generation
Property power supply it is poor etc., need to be further increased or perfect.
Invention content
The object of the present invention is to provide a kind of natural gas pressure difference generating system and its control method, the natural gas pressure difference hair
Electric system has the advantages that simple in structure, safety and stability, power quality be good, high degree of automation, can meet large and medium-sized electricity consumption rule
The daily electricity consumption at mould field station needs, and can be natural gas line 24V electricity consumption instrument uninterrupted power supplies, ensures its normal operation；Institute
Stating control method has the characteristics that logic is reasonable, controllability is strong, safe.
To solve power generation scale is smaller, fluctuation of service, power quality existing for natural gas power generation device in the prior art
The problem of not high, continued power energy force difference, a kind of natural gas pressure difference generating system provided by the invention, including it is solenoid valve, electronic
Regulating valve, fluid motor, excitation explosion-proof power generator, PLC control cabinet, voltage stabilization and frequency stabilization device, inverter, accumulator group and UPS electricity
Source, wherein the solenoid valve, electric control valve and fluid motor are sequentially arranged at by upstream to downstream on power generation pipeline, described
Excitation explosion-proof power generator is connect by shaft coupling with fluid motor, and measure voltage ＆amp is equipped in the PLC control cabinet,
PLC control cabinet passes through the excitation module and ups power of signal wire and solenoid valve, electric control valve, excitation explosion-proof power generator respectively
Connection, the power generation of excitation explosion-proof power generator is exported connect with the measure voltage ＆amp in PLC control cabinet by power line after
Connect again with the input terminal of voltage stabilization and frequency stabilization device, the output end of voltage stabilization and frequency stabilization device respectively by power line and PLC control cabinet and
The input terminal of inverter connects, and the output end of inverter is connect by power line with the input terminal of accumulator group, accumulator group
The input terminal of output end and ups power connects, and the output end of ups power is connect with PLC control cabinet；When installing and using, make power generation
Pipeline is in parallel with natural gas station pressure regulation pipeline, and upstream end is made to connect high pressure pipe network, and downstream is made to connect low-pressure pipe network；Allow field
380/220V electrical equipments of standing are connect by power line with the output end of the output end of voltage stabilization and frequency stabilization device and ups power respectively,
Natural gas line 24V electricity consumptions instrument is allowed to be connect with the output end of accumulator group by power line.
Further, a kind of natural gas pressure difference generating system of the present invention further includes the vacuum tank being set on power generation pipeline,
So that vacuum tank is in the downstream position of fluid motor, and the volumetric quantities of vacuum tank is made to be greater than or equal to its entrance caliber numerical value
75 times.
Further, a kind of natural gas pressure difference generating system of the present invention further includes the first pressure being set on power generation pipeline
Power transmitter, the first temperature transmitter, second pressure transmitter and second temperature transmitter, and make first pressure transmitter,
One temperature transmitter, second pressure transmitter and second temperature transmitter are connect by signal wire with PLC control cabinet respectively,
In, first pressure transmitter and the first temperature transmitter are in the position between electric control valve and fluid motor, second pressure
Transmitter and second temperature transmitter are in the downstream position of vacuum tank.
Further, a kind of natural gas pressure difference generating system of the present invention, wherein the fluid motor and the explosion-proof power generation of excitation
Shaft coupling between machine is equipped with speed instrument, and fluid motor and excitation explosion-proof power generator use same skid and are installed on and set
In standby case, equipment box is set to station anti-explosion area, is equipped with concentration of natural gas detector at the top of equipment box, the speed instrument and
Concentration of natural gas detector is connect by signal wire with PLC control cabinet respectively.
Further, a kind of natural gas pressure difference generating system of the present invention further includes being set on power generation pipeline to diffuse ball
Valve and shut-off valve, wherein the downstream position for diffusing ball valve and being set to second pressure transmitter and second temperature transmitter, institute
It states shut-off valve and is set to the downstream position for diffusing ball valve.
Further, a kind of natural gas pressure difference generating system of the present invention, wherein the electric control valve is anti-explosion electric tune
Valve is saved, the degree of regulation of electric control valve is 0.1~1%；The excitation explosion-proof power generator is electromagnetic field class generator.
A kind of control method of natural gas pressure difference generating system disclosed by the invention, includes the following steps：
One, ups power is opened, allows ups power that alternating current is conveyed to PLC control cabinet and station 380/220V electricity consumptions respectively
Equipment, at this point, ups power is in power supply state；
Two, the power switch of PLC control cabinet is opened, checks solenoid valve, electric control valve, excitation explosion-proof power generator, first
Pressure transmitter, the first temperature transmitter, second pressure transmitter, second temperature transmitter, speed instrument and natural gas are dense
Whether the state for spending detector is normal；
If each valve and meter status are normal, booted up after the rotating speed of fluid motor is set by PLC control cabinet；If
Each valve and meter status are abnormal, then after carrying out hand inspection and debugging, fluid motor is set by PLC control cabinet
Rotating speed simultaneously boots up；
Two, after being switched on, PLC control cabinet is allowed automatically to open solenoid valve, and the aperture of electric control valve is allowed gradually to increase, gas
Stream driving fluid motor rotates and excitation explosion-proof power generator is driven to operate；
Three, when fluid motor rotating speed reaches setting speed and stable operation 3S, make PLC control cabinet automatically explosion-proof to excitation
The excitation module of generator notes magnetic, and electric power is simultaneously fed sequentially into the electricity of the voltage in PLC control cabinet by the power generation of excitation explosion-proof power generator
Flow detection module and voltage stabilization and frequency stabilization device；
Four, voltage stabilization and frequency stabilization device respectively sets power Transmission to PLC control cabinet, inverter and station 380/220V electricity consumptions
It is standby；Meanwhile PLC control cabinet makes ups power be switched to charged state automatically, to stop to PLC control cabinet and station 380/220V
Power supply for electrical equipment；
Five, inverter is conveyed to accumulator group after alternating current is converted to direct current, and accumulator group carries out electric power storage and is UPS
Power source charges, meanwhile, direct current is conveyed to natural gas line 24V electricity consumption instrument by accumulator group；
Six, during above-mentioned steps two to five, PLC control cabinet is allowed to become by first pressure transmitter, the first temperature
Device, second pressure transmitter, second temperature transmitter, speed instrument and concentration of natural gas detector is sent to monitor power generation system automatically
The operation conditions of system, and alarmed or/and shut down automatically according to unusual condition, specifically realize by the following method：
A, it when the pressure value that first pressure transmitter and second pressure transmitters monitor arrive is more than setting value, carries out automatic
Alarm, and shut down；
B, it when the temperature value that the first temperature transmitter and second temperature transmitters monitor arrive is less than setting value, carries out automatic
Alarm, but without shutting down；
C, when the concentration of natural gas value that concentration of natural gas detector monitors is more than setting value, automatic alarm is carried out, and
It is shut down；
D, when the tachometer value that speed instrument monitors is more than setting value, automatic alarm is carried out, and shut down；
E, when fluctuating occurs in the tachometer value that speed instrument monitors but is not above setting value, allow PLC control cabinet from
The dynamic aperture for adjusting electric control valve is so that rotating speed restores to stablize；
Seven, artificial orderly closedown or according to step 6 detect unusual condition emergency shutdown when, by PLC control cabinet from
Dynamic cut-out solenoid valve, makes the aperture of electric control valve be gradually decrease to zero, makes the excitation module demagnetization of excitation explosion-proof power generator, and
By manually closing the power switch of PLC control cabinet to complete stopping process；Meanwhile PLC control cabinet makes ups power switch automatically
For power supply state, to be station 380/220V power supply for electrical equipment；
Eight, when ups power is in power supply state, PLC control cabinet is allowed to monitor the electricity of ups power automatically, and work as electricity
Ups power is set to close when less than 30%, to stop powering.
A kind of natural gas pressure difference generating system of the present invention and its control method compared with prior art, have the following advantages：
(1) present invention is by being arranged solenoid valve, electric control valve, fluid motor, excitation explosion-proof power generator, PLC control cabinet, voltage stabilization and frequency stabilization
Device, inverter, accumulator group and ups power, allow solenoid valve, electric control valve and fluid motor to be pacified successively by upstream to downstream
On power generation pipeline, allows excitation explosion-proof power generator to be connect with fluid motor by shaft coupling, voltage is set in PLC control cabinet
Current detection module allows PLC control cabinet to be encouraged respectively by signal wire and solenoid valve, electric control valve, excitation explosion-proof power generator
Magnetic module is connected with ups power, and the power generation output of excitation explosion-proof power generator is allowed to pass through power line and the voltage electricity in PLC control cabinet
It is connect again with the input terminal of voltage stabilization and frequency stabilization device after stream detection module connection, the output end of voltage stabilization and frequency stabilization device is allowed to pass through electricity respectively
The line of force is connect with the input terminal of PLC control cabinet and inverter, and the output end of inverter is allowed to pass through the defeated of power line and accumulator group
Enter end connection, the output end of accumulator group and the input terminal of ups power is allowed to connect, allows the output end and PLC control cabinet of ups power
Connection.Thus just constitute that a kind of simple in structure, safety and stability, power quality be good, natural gas pressure difference hair of high degree of automation
Electric system.It when installing and using, makes power generation pipeline in parallel with original pressure regulation pipeline of natural gas station, and keeps upstream end connection high
Pressure pipe net makes downstream connect low-pressure pipe network.Meanwhile making station 380/220V electrical equipments steady with voltage stabilizing by power line respectively
The output end of frequency device is connected with the output end of ups power, and natural gas line 24V electricity consumption instrument is allowed to pass through power line and accumulator
The output end connection of group.The present invention can meet large and medium-sized use by using the structure of fluid motor connecting shaft excitation explosion-proof power generator
The daily electricity consumption of electric scale station；By using excitation explosion-proof power generator, it can be achieved that increasing magnetic automatically, subtracting magnetic, not only make control more
Add it is easy to implement, and make power generation quality more stablize, ensure that the safety of electrical equipment；By using 380V/220V and 24V
Two different supply lines are classified power supply to station electrical equipment and instrument, realize instrument uninterrupted power supply for 24 hours,
Electrical equipment is powered for a long time.(2) a kind of control method of natural gas pressure difference generating system provided by the invention is closed with logic
Reason, the feature that controllability is strong, safe.
Shown specific implementation mode is to a kind of natural gas pressure difference generating system of the present invention and its controlling party below in conjunction with the accompanying drawings
Method is described in further detail：
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of natural gas pressure difference generating system of the present invention；
Fig. 2 is a kind of control flow chart of natural gas pressure difference generating system of the present invention；
In figure, 1, solenoid valve；2, electric control valve；3, fluid motor；4, excitation explosion-proof power generator；5, PLC control cabinet；6、
Voltage stabilization and frequency stabilization device；7, inverter；8, accumulator group；9, ups power；10, vacuum tank；11, first pressure transmitter；12,
One temperature transmitter；13, second pressure transmitter；14, second temperature transmitter；15, speed instrument；16, concentration of natural gas
Detector；17, ball valve is diffused；18 shut-off valves；19,24V electricity consumptions instrument；20,380/220V electrical equipments；21, station surge pipe
Intelligent voltage regulator in road；22 and 23, the pressure regulation stop valve in station pressure regulation pipeline；24, high pressure pipe network；25, low-pressure pipe network.
Specific implementation mode
Firstly the need of explanation, this invention provides both a kind of natural gas pressure difference generating systems, but provide this is natural
The control method of draught head electricity generation system.
A kind of specific implementation mode of natural gas pressure difference generating system of the present invention as shown in Figure 1, including it is solenoid valve 1, electronic
Regulating valve 2, fluid motor 3, excitation explosion-proof power generator 4, PLC control cabinet 5, voltage stabilization and frequency stabilization device 6, inverter 7, accumulator group 8
With ups power 9.Solenoid valve 1, electric control valve 2 and fluid motor 3 is allowed to be sequentially arranged on power generation pipeline by upstream to downstream,
It allows excitation explosion-proof power generator 4 to be connect with fluid motor 3 by shaft coupling, measure voltage ＆ current mould is set in PLC control cabinet 5
Block allows PLC control cabinet 5 respectively by signal wire and solenoid valve 1, the excitation module of electric control valve 2, excitation explosion-proof power generator 4
It is connected with ups power 9, the power generation output of excitation explosion-proof power generator 4 is allowed to pass through power line and the voltage and current in PLC control cabinet 5
It is connect again with the input terminal of voltage stabilization and frequency stabilization device 6 after detection module connection, the output end of voltage stabilization and frequency stabilization device 6 is allowed to pass through electricity respectively
The line of force is connect with the input terminal of PLC control cabinet 5 and inverter 7, and the output end of inverter 7 is allowed to pass through power line and accumulator group 8
Input terminal connection, allow the output end of accumulator group 8 to be connect with the input terminal of ups power 9, allow ups power 9 output end and
PLC control cabinet 5 connects.It is arranged that just to constitute a kind of simple in structure, safety and stability, power quality good, automatic through the above structure
The high natural gas pressure difference generating system of change degree.When installing and using, allow power generation pipeline and natural gas station original surge pipe
Road is in parallel, and upstream end is made to connect high pressure pipe network, and downstream is made to connect low-pressure pipe network.Meanwhile station 380/220V electricity consumptions being allowed to set
Back-up is not connect by power line with the output end of the output end of voltage stabilization and frequency stabilization device 6 and ups power 9, allows natural gas line 24V
Electricity consumption instrument is connect by power line with the output end of accumulator group 8.The present invention is explosion-proof by using 3 connecting shaft excitation of fluid motor
The structure of generator 4 can meet the daily electricity consumption of large and medium-sized electricity consumption scale station；It can be realized by using excitation explosion-proof power generator
It is automatic to increase magnetic, subtract magnetic, not only make control be more prone to realize, and power generation quality is made more to stablize, ensure that electrical equipment
Safety；Confession is classified to station electrical equipment and instrument by using 380V/220V and 24V two different supply lines
Electricity, realizes instrument uninterrupted power supply for 24 hours, and 380V/220V electrical equipments are powered for a long time.The present invention is opened using PLC control cabinet 5
Instead of check-valves and safety valve, safety higher is conducive to industrialization for shutdown.
Scheme as an optimization, present embodiment are provided with vacuum tank 10 on power generation pipeline, vacuum tank 10 are made to be in
The downstream position of fluid motor 3, and the volumetric quantities of vacuum tank 10 is made to be greater than or equal to 75 times of its entrance caliber numerical value.Pass through
Vacuum tank 10 is set, effective cushioning effect can be played in the case where air-flow fluctuates, on the one hand avoids electricity generation system
Downstream air pressure is affected greatly, the stability for enhancing electricity hair system operation on the other hand can be made.
Meanwhile for convenience of the operation conditions of monitoring electricity generation system in real time, improving automatic management degree, this specific embodiment party
Formula is provided with first pressure transmitter 11, the first temperature transmitter 12, second pressure transmitter 13 and second on power generation pipeline
Temperature transmitter 14, and make first pressure transmitter 11, the first temperature transmitter 12, second pressure transmitter 13 and second temperature
Transmitter 14 is connect by signal wire with PLC control cabinet 5 respectively, wherein allows first pressure transmitter 11 and the first temperature pick-up
Device 12 is in the position between electric control valve 2 and fluid motor 3, allows second pressure transmitter 13 and second temperature transmitter 14
Downstream position in vacuum tank 10.The present invention can be examined in real time by the way that 11 first temperature transmitter 12 of first pressure transmitter is arranged
The pressure and temperature of 3 upstream of fluid measured motor, can be real-time by the way that second pressure transmitter 13 and second temperature transmitter 14 is arranged
The pressure and temperature in 10 downstream of vacuum tank is detected, and the pressure and temperature parameter of detection is passed into PLC control cabinet 5, so as to PLC
Switch board 5 is alarmed or/and is shut down automatically in pressure and temperature exception, not only can guarantee the safety of system, and improve
Automatic management degree.
Turn in addition, present embodiment is provided on the shaft coupling between fluid motor 3 and excitation explosion-proof power generator 4
Fast tachymeter 15, and make fluid motor 3 and excitation explosion-proof power generator 4 using same skid and be installed in equipment box, allows equipment
Case is set to station anti-explosion area, allows equipment box in top setting concentration of natural gas detector 16, and make speed instrument 15 and day
Right gas concentration detector 16 is connect by signal wire with PLC control cabinet 5 respectively.It is arranged through the above structure, PLC control cabinet can be made
5 monitor the rotating speed of fluid motor 3 by speed instrument 15 in real time, and can monitor day in real time by concentration of natural gas detector 16
Whether right gas is revealed, and to be alarmed or/and shut down automatically in rotating speed and concentration of natural gas exception, further improves and is
The safety of system, practicability are stronger.
It should be noted that in practical applications, invention is also provided on power generation pipeline and diffuses ball valve 17 and shut-off valve
18, it allows and diffuses the downstream position that ball valve 17 is set to second pressure transmitter 13 and second temperature transmitter 14, allow shut-off valve 18
It is set to the downstream position for diffusing ball valve 17.When the hypertonia in the pipeline that generates electricity, can be carried out in time by diffusing ball valve 17
Pressure release, to ensure safety；When electricity generation system, which breaks down, shuts down, by closing the cut-off company with downstream pipe network of shut-off valve 18
It connects, to facilitate inspection or repair, and protects the safety of equipment.To further increase safety, the motorized adjustment in the present invention
2 generally use anti-explosion electric regulating valve of valve, and its degree of regulation is made to be 0.1~1%；Excitation explosion-proof power generator 4 generally use electricity
Magnetic field class generator.
Flow chart as shown in Figure 2, a kind of control method of natural gas pressure difference generating system provided by the invention are specific to wrap
Include following steps：
One, ups power 9 is opened, allows ups power 9 that alternating current is conveyed to PLC control cabinet 5 and station 380/220V respectively
Electrical equipment, at this point, ups power 9 is in power supply state；
Two, the power switch of PLC control cabinet 5 is opened, and checks solenoid valve 1, electric control valve 2, excitation explosion-proof power generator
4, first pressure transmitter 11, the first temperature transmitter 12, second pressure transmitter 13, second temperature transmitter 14, rotating speed are surveyed
Whether the state of fast instrument 15 and concentration of natural gas detector 16 is normal；
If each valve and meter status are normal, booted up after the rotating speed of fluid motor 3 is set by PLC control cabinet 5；
If each valve and meter status are abnormal, after carrying out hand inspection and debugging, fluid horse is set by PLC control cabinet 5
Up to 3 rotating speed and boot up；
Two, after being switched on, PLC control cabinet 5 is allowed automatically to open solenoid valve 1, and the aperture of electric control valve 2 is allowed gradually to increase
Greatly, air stream drives fluid motor 3 rotates and excitation explosion-proof power generator 4 is driven to operate；
Three, when 3 rotating speed of fluid motor reaches setting speed and stable operation 3S, make PLC control cabinet 5 automatically anti-to excitation
The excitation module for breaking out motor 4 notes magnetic, and excitation explosion-proof power generator 4 generates electricity and electric power is fed sequentially into the electricity in PLC control cabinet 5
Current voltage detection module and voltage stabilization and frequency stabilization device 6；
Four, voltage stabilization and frequency stabilization device 6 is respectively by power Transmission to PLC control cabinet 5, inverter 7 and station 380/220V electricity consumptions
Equipment；Meanwhile PLC control cabinet 5 makes ups power 9 be switched to charged state automatically, to stop to PLC control cabinet 5 and station 380/
220V power supply for electrical equipment；
Five, inverter 7 is conveyed to accumulator group 8 after alternating current is converted to direct current, and accumulator group 8 carries out electric power storage and is
Ups power 9 charges, meanwhile, direct current is conveyed to natural gas line 24V electricity consumption instrument by accumulator group 8；
Six, during above-mentioned steps two to five, PLC control cabinet 5 is allowed to pass through first pressure transmitter 11, the first temperature
Transmitter 12, second pressure transmitter 13, second temperature transmitter 14, speed instrument 15 and concentration of natural gas detector 16 are certainly
The operation conditions of dynamic monitoring electricity generation system, and alarmed or/and shut down automatically according to unusual condition, it is specifically real by the following method
It is existing：
A, it when the pressure value that first pressure transmitter 11 and second pressure transmitter 13 monitor is more than setting value, carries out
Automatic alarm, and shut down；
B, it when the temperature value that the first temperature transmitter 12 and second temperature transmitter 14 monitor is less than setting value, carries out
Automatic alarm, but without shutting down；
C, when the concentration of natural gas value that concentration of natural gas detector 16 monitors is more than setting value, automatic alarm is carried out,
And it is shut down；
D, when the tachometer value that speed instrument 15 monitors is more than setting value, automatic alarm is carried out, and shut down；
E, when fluctuating occurs in the tachometer value that speed instrument 15 monitors but is not above setting value, PLC control cabinet 5 is allowed
The aperture of electric control valve 2 is automatically adjusted so that rotating speed restores to stablize；
Seven, artificial orderly closedown or according to step 6 detect unusual condition emergency shutdown when, pass through PLC control cabinet 5
Solenoid valve 1 is automatically cut off, the aperture of electric control valve 2 is made to be gradually decrease to zero, the excitation module of excitation explosion-proof power generator 4 is made to disappear
Magnetic, and by manually closing the power switch of PLC control cabinet 5 to complete stopping process；Meanwhile PLC control cabinet 5 makes UPS automatically
Power supply 9 is switched to power supply state, to be station 380/220V power supply for electrical equipment；
Eight, when ups power 9 is in power supply state, PLC control cabinet 5 is allowed to monitor the electricity of ups power 9 automatically, and when electricity
Close ups power 9 when amount is less than 30%, to stop powering.
A kind of control method of natural gas pressure difference generating system of the present invention is with logic is reasonable, controllability is strong, safe
The characteristics of, realize the seamless switching of power generation power supply and ups power two kinds of powering modes of power supply, and unusual condition can be directed to and form report
Alert list, ensure that the safety of electricity generation system.
Above example is only the description carried out to the preferred embodiment for the present invention, and range not is claimed to the present invention
The restriction of progress, under the premise of not departing from design spirit of the present invention, the technology of this field engineers and technicians according to the present invention
The various forms of deformations that scheme is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (7)
1. a kind of natural gas pressure difference generating system, including solenoid valve (1), electric control valve (2), fluid motor (3), excitation are explosion-proof
Generator (4), PLC control cabinet (5), voltage stabilization and frequency stabilization device (6), inverter (7), accumulator group (8) and ups power (9), it is special
Sign is that the solenoid valve (1), electric control valve (2) and fluid motor (3) are sequentially arranged at power generation pipeline by upstream to downstream
On, the excitation explosion-proof power generator (4) is connect by shaft coupling with fluid motor (3), and electricity is equipped in the PLC control cabinet (5)
Current voltage detection module, PLC control cabinet (5) pass through signal wire and solenoid valve (1), electric control valve (2), the anti-outburst of excitation respectively
The excitation module and ups power (9) of motor (4) connect, and the power generation output of excitation explosion-proof power generator (4) passes through power line and PLC
It is connect again with the input terminal of voltage stabilization and frequency stabilization device (6) after measure voltage ＆amp connection in switch board (5), voltage stabilization and frequency stabilization dress
The output end for setting (6) is connect by power line with the input terminal of PLC control cabinet (5) and inverter (7) respectively, inverter (7)
Output end is connect by power line with the input terminal of accumulator group (8), and the output end of accumulator group (8) is defeated with ups power (9)
Enter end connection, the output end of ups power (9) is connect with PLC control cabinet (5)；When installing and using, make power generation pipeline and natural gas field
Pressure regulation pipeline of standing is in parallel, and upstream end is made to connect high pressure pipe network, and downstream is made to connect low-pressure pipe network；Allow station 380/220V electricity consumptions
Equipment is connect by power line with the output end of the output end of voltage stabilization and frequency stabilization device (6) and ups power (9) respectively, allows natural gas
Pipeline 24V electricity consumptions instrument is connect by power line with the output end of accumulator group (8).
2. a kind of natural gas pressure difference generating system described in accordance with the claim 1, which is characterized in that further include being set to power generation pipe
The vacuum tank (10) of road, makes vacuum tank (10) be in the downstream position of fluid motor (3), and makes the volume number of vacuum tank (10)
75 times of value more than or equal to its entrance caliber numerical value.
3. a kind of natural gas pressure difference generating system according to claim 2, which is characterized in that further include being set to power generation pipe
First pressure transmitter (11), the first temperature transmitter (12), second pressure transmitter (13) and the second temperature pick-up of road
Device (14), and make first pressure transmitter (11), the first temperature transmitter (12), second pressure transmitter (13) and second temperature
Transmitter (14) is connect by signal wire with PLC control cabinet (5) respectively, wherein first pressure transmitter (11) and the first temperature
Transmitter (12) is in the position between electric control valve (2) and fluid motor (3), second pressure transmitter (13) and the second temperature
Degree transmitter (14) is in the downstream position of vacuum tank (10).
4. a kind of natural gas pressure difference generating system described in accordance with the claim 3, which is characterized in that the fluid motor (3) and
Shaft coupling between excitation explosion-proof power generator (4) is equipped with speed instrument (15), fluid motor (3) and excitation explosion-proof power generator
(4) it uses same skid and is installed in equipment box, equipment box is set to station anti-explosion area, and it is dense to be equipped with natural gas at the top of equipment box
Detector (16) is spent, the speed instrument (15) and concentration of natural gas detector (16) are controlled by signal wire and PLC respectively
Cabinet (5) connects.
5. a kind of natural gas pressure difference generating system according to claim 4, which is characterized in that further include being set to power generation pipe
Diffuse ball valve (17) and shut-off valve (18) in road, wherein the ball valve (17) that diffuses is set to second pressure transmitter (13)
With the downstream position of second temperature transmitter (14), the shut-off valve (18) is set to the downstream position for diffusing ball valve (17).
6. a kind of natural gas pressure difference generating system according to claim 5, which is characterized in that the electric control valve (2)
Degree of regulation for anti-explosion electric regulating valve, electric control valve (2) is 0.1~1%；The excitation explosion-proof power generator (4) is electricity
Magnetic field class generator.
7. the control method of natural gas pressure difference generating system described in a kind of claim 6, which is characterized in that include the following steps：
One, ups power (9) is opened, allows ups power (9) that alternating current is conveyed to PLC control cabinet (5) and station 380/ respectively
220V electrical equipments, at this point, ups power (9) is in power supply state；
Two, the power switch of PLC control cabinet (5) is opened, checks solenoid valve (1), electric control valve (2), excitation explosion-proof power generator
(4), first pressure transmitter (11), the first temperature transmitter (12), second pressure transmitter (13), second temperature transmitter
(14), whether the state of speed instrument (15) and concentration of natural gas detector (16) is normal；
If each valve and meter status are normal, booted up after the rotating speed of fluid motor (3) is set by PLC control cabinet (5)；
If each valve and meter status are abnormal, after carrying out hand inspection and debugging, fluid is set by PLC control cabinet (5)
The rotating speed of motor (3) simultaneously boots up；
Three, after being switched on, PLC control cabinet (5) is allowed automatically to open solenoid valve (1), and the aperture of electric control valve (2) is allowed gradually to increase
Greatly, air stream drives fluid motor (3) rotates and excitation explosion-proof power generator (4) is driven to operate；
Four, when fluid motor (3) rotating speed reaches setting speed and stable operation 3S, make PLC control cabinet (5) automatically anti-to excitation
The excitation module for breaking out motor (4) notes magnetic, and excitation explosion-proof power generator (4) generates electricity and electric power is fed sequentially into PLC control cabinet (5)
In measure voltage ＆amp and voltage stabilization and frequency stabilization device (6)；
Five, voltage stabilization and frequency stabilization device (6) respectively uses power Transmission to PLC control cabinet (5), inverter (7) and station 380/220V
Electric equipment；Meanwhile PLC control cabinet (5) makes ups power (9) be switched to charged state automatically, to stop to PLC control cabinet (5) and
Station 380/220V power supply for electrical equipment；
Six, inverter (7) is conveyed to accumulator group (8) after alternating current is converted to direct current, and accumulator group (8) carries out electric power storage simultaneously
It charges for ups power (9), meanwhile, direct current is conveyed to natural gas line 24V electricity consumption instrument by accumulator group (8)；
Seven, during above-mentioned steps two to six, PLC control cabinet (5) is allowed to pass through first pressure transmitter (11), the first temperature
Transmitter (12), second pressure transmitter (13), second temperature transmitter (14), speed instrument (15) and concentration of natural gas inspection
It surveys instrument (16) and monitors the operation conditions of electricity generation system automatically, and alarmed or/and shut down automatically according to unusual condition, specifically press
Following methods are realized：
A, it when the pressure value that first pressure transmitter (11) and second pressure transmitter (13) monitor is more than setting value, carries out
Automatic alarm, and shut down；
B, it when the temperature value that the first temperature transmitter (12) and second temperature transmitter (14) monitor is less than setting value, carries out
Automatic alarm, but without shutting down；
C, when the concentration of natural gas value that concentration of natural gas detector (16) monitors is more than setting value, automatic alarm is carried out, and
It is shut down；
D, when the tachometer value that speed instrument (15) monitors is more than setting value, automatic alarm is carried out, and shut down；
E, when fluctuating occurs in the tachometer value that speed instrument (15) monitors but is not above setting value, PLC control cabinet (5) is allowed
The aperture of electric control valve (2) is automatically adjusted so that rotating speed restores to stablize；
Eight, artificial orderly closedown or according to step 7 detect unusual condition emergency shutdown when, by PLC control cabinet (5) from
Dynamic cut-out solenoid valve (1), makes the aperture of electric control valve (2) be gradually decrease to zero, makes the excitation mould of excitation explosion-proof power generator (4)
Block demagnetization, and by manually closing the power switch of PLC control cabinet (5) to complete stopping process；Meanwhile PLC control cabinet (5) is certainly
It is dynamic that ups power (9) is made to be switched to power supply state, to be station 380/220V power supply for electrical equipment；
Nine, when ups power (9) is in power supply state, PLC control cabinet (5) is allowed to monitor the electricity of ups power (9) automatically, and work as
Electricity closes ups power (9) when being less than 30%, to stop powering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610978363.1A CN106437912B (en) | 2016-11-07 | 2016-11-07 | A kind of natural gas pressure difference generating system and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610978363.1A CN106437912B (en) | 2016-11-07 | 2016-11-07 | A kind of natural gas pressure difference generating system and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106437912A CN106437912A (en) | 2017-02-22 |
| CN106437912B true CN106437912B (en) | 2018-09-11 |
Family
ID=58207598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610978363.1A Active CN106437912B (en) | 2016-11-07 | 2016-11-07 | A kind of natural gas pressure difference generating system and its control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106437912B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271765B (en) * | 2017-07-25 | 2023-04-07 | 广州华丰能源科技有限公司 | Intelligent power generation metering device and method for natural gas pipe network |
| CN109779693A (en) * | 2017-11-10 | 2019-05-21 | 广州鲜之源生态冷链技术有限公司 | A kind of method and its equipment to generate electricity using liquid gas |
| CN107906367A (en) * | 2017-11-27 | 2018-04-13 | 北京市燃气集团有限责任公司 | A kind of mini gas pipe network pressure regulation power generator |
| CN115562029B (en) * | 2022-10-17 | 2023-06-16 | 杭州天然气有限公司 | Intelligent control method and system for natural gas turbine expansion generator set |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206190342U (en) * | 2016-11-07 | 2017-05-24 | 北京市燃气集团有限责任公司 | Natural atmospheric pressure difference power generation system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202047872U (en) * | 2011-02-22 | 2011-11-23 | 遂宁市华旭科技有限公司 | Pipeline natural gas generator set |
| CN204851334U (en) * | 2015-07-13 | 2015-12-09 | 华南理工大学 | Intelligent natural gas pipe network pressure can power generation facility |
| CN105953074A (en) * | 2016-04-27 | 2016-09-21 | 北京市燃气集团有限责任公司 | Intelligent power generation and pressure regulation box for natural gas pipeline network |
-
2016
- 2016-11-07 CN CN201610978363.1A patent/CN106437912B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206190342U (en) * | 2016-11-07 | 2017-05-24 | 北京市燃气集团有限责任公司 | Natural atmospheric pressure difference power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106437912A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106437912B (en) | A kind of natural gas pressure difference generating system and its control method | |
| CN104989459A (en) | Intelligent natural gas pipe network pressure energy power generating device and control method thereof | |
| CN103248082A (en) | Fuel cell standby power supply system provided with hydrogen circulation device | |
| CN206563175U (en) | A kind of GTCC power plant LNG Vaporizing Station control system | |
| CN209960222U (en) | Gas pressure regulating metering cabinet capable of monitoring gas leakage in cabinet in real time | |
| CN208061002U (en) | A kind of boiler room equipment energy consumption monitoring system | |
| CN202772598U (en) | Power generation system | |
| CN111006135B (en) | High-efficient portable gas pressure regulating measurement sled | |
| CN206190342U (en) | Natural atmospheric pressure difference power generation system | |
| CN209782246U (en) | Automatic pressure-regulating compressed air centralized air supply system | |
| CN105953074A (en) | Intelligent power generation and pressure regulation box for natural gas pipeline network | |
| CN204851334U (en) | Intelligent natural gas pipe network pressure can power generation facility | |
| CN204831815U (en) | Dispatch from factory test platform of performance of test CNG gas station compressor | |
| CN202047872U (en) | Pipeline natural gas generator set | |
| CN208121871U (en) | Large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch | |
| CN204943997U (en) | A kind of full factory shares open cycle cooling water system | |
| CN204083816U (en) | A kind of combustion gas building regulation boxes | |
| CN107317715A (en) | A kind of equipment condition monitoring instrument | |
| KR20180043060A (en) | Distributed power control apparatus and system | |
| CN208353050U (en) | A kind of miniature accumulation power supply of pipeline type self-powered | |
| CN209174115U (en) | Coal pulverizer sealing air control device | |
| CN204992612U (en) | Double -pipeline ventilation air methane power generation system | |
| CN212869370U (en) | Instrument air pressure balance control and protection system | |
| CN207634778U (en) | More electromagnetic valve controlling systems that a kind of coal pulverizer outlet speed is closed the door | |
| CN108418291A (en) | A kind of miniature accumulation power supply of pipeline type self-powered |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |