CN100410580C - Peak regulating method of jet set natural gas intelligent peak value regulating device - Google Patents

Abstract

The present invention relates to a natural gas peak regulating method, particularly to a peak regulating method for an intelligent gas peak regulating device with an ejector set. The peak regulating method is characterized in that after power-on, CPU arranged inside PLC carries out data processing and compares input data with built-in storage data; if current data accords with data used for starting the ejector set in the built-in storage data, the CPU sends out corresponding instructions, and ejectors lead out residual gas from a gas storage spherical tank to a transmitting and allocating pipeline network so as to guarantee uniform gas consumption; under the control of the CPU, two to scores of combinations with different flow quantities can be generated. By the peak regulating method, the dispatching quantity of storage gas of the gas storage spherical tanks of a storing and allocating natural gas station can be increased by 20% to 30%; therefore, investment benefits are increased, and operation cost is reduced; besides, the problem of uneven gas consumption of users is solved.

Description

The peak regulation method of a kind of ejector group rock gas intelligence peak regulation (value) device

Technical field

The present invention relates to a kind of natural gas peak-shaving (value) regulating method, particularly relate to the peak regulation method of a kind of ejector group rock gas intelligence peak regulation (value) device.

Background technique

It mainly is to regulate by the gas storage spherical tank at rock gas high pressure deposit station that present natural gas peak-shaving value is regulated way, natural gas-storing when gas-use low peak, with the gas peak time, replenish air feed to transmission ﹠ distribution tracheae net, to solve the even problem of user's usefulness gas, the quality of its effect is decided by that can schedulable gas-storing capacity of natural gas tank and air pressure satisfy the additional air feed of transmission ﹠ distribution tracheae net.This shows that the user evenly is subjected to gas tank internal air pressure and adjustable combustion gas quantitative limitation with gas, and its operability is relatively poor, haves much room for improvement.

Summary of the invention

The objective of the invention is at the above-mentioned problems in the prior art, provide a kind of and not only can not depend on the adjustable tolerance of above-mentioned gas distribution station but also can satisfy the peak regulation method that the user evenly uses ejector group rock gas intelligence peak regulation (value) device of gas in real time.

Technological scheme of the present invention is to download in programmable logic controller (the PLC-Programmable Logic Controller) storage in this device keying in peak regulation step control program software in the supervisory control comuter, start this device, its control program enters the starting stage, and the supervisory control comuter in this device enters the program running monitored state simultaneously; When the current gas pressure peak value analogue signal in the rock gas gas storage spherical tank by this device in gas tank gaseous-pressure transmitter P2 deliver to the corresponding inlet of PLC, after entering PLC, CPU wherein handles, compare the back with setting peak parameters in the CPU storage and judge whether peak value has dropped to degree from pressure regulation to gas distributing system that can't can replenish combustion gas through, if, PLC sends the instruction that starts this device repeat circuit and solenoid valve, make the combustion gas ejector in this device be combined into the multiple combustion gas ejector assemblying body that adapts to current additional air feed, meanwhile, in PLC, under the control of CPU, start high pressure admission main valve and spherical tank and come the air inlet of gas main valve.

The invention has the beneficial effects as follows that the scheduling gas-storing capacity that can make rock gas storage and distribution station gas storage spherical tank improves 20% to 30%, thereby improved returns of investment, reduced operating cost; Solved user's usefulness gas uniformly to topic.

Description of drawings

Fig. 1 is the structured flowchart and the Figure of abstract of ejector group rock gas intelligence peak regulation value device of the present invention;

Fig. 2 is Fig. 1 circuit diagram;

Fig. 3 is Fig. 2 list ejector workflow diagram;

Fig. 4 is the two ejector workflow diagrams of Fig. 2.

Embodiment

See that Fig. 1 and Fig. 2 the inventive system comprises a PLC as can be known, the pressure transmitter P1 of the high-pressure air source that is connected with its input port, gas tank gaseous-pressure transmitter P2, the give vent to anger gas meter Q1 of pressure transmitter P3 and high-pressure air source of combustion gas ejector group, the gas meter Q2 of spherical tank low pressure natural gas, the electronic actuator relay C1-C10 that is connected with its output port, solenoid valve D1-D10, wherein D1 and D2 are source of the gas and gas tank main valve, remaining can form 30 kinds of ejector assemblying bodys that flow is different, also comprises the two-way supervisory computer system that is connected with PLC, 9V, 24V and 220V power supply, 220V air-break switch K1-K10 and rack (not shown).

See Fig. 3 a kind of job step flow process of Fig. 2 as can be known: the give vent to anger real-time pressure signal of pressure transmitter P3 of the pressure transmitter P1 of high-pressure air source, gas tank gaseous-pressure transmitter P2, combustion gas ejector group is sent into PLC, by the break-make of control program software by control auxiliary reclay C that is contained in the PLC, reach the break-make of control electromagnetic valve D;

After the pressure of P1 was greater than 0.38Mpa, after analyzing via PLC inner control program software, the 01 end closure of PLC made auxiliary reclay C1 conducting, the normally opened contact closure of C1, and solenoid valve D1 power turn-on, solenoid valve D1 opens, and the high pressure admission main valve is opened;

When the pressure of P2 between the 0.15Mpa to 0.2Mpa the time, after PLC inner control program software was analyzed, correspondence went out the 02 end closure of PLC, make auxiliary reclay C2 conducting, the normally opened contact closure of C2, solenoid valve D2 power turn-on, solenoid valve D2 opens, and makes spherical tank come the gas main valve to open;

Under the condition that above P1 and two conditions of P2 satisfy simultaneously, variation according to P3, provide the start-stop combination of the single solenoid valve D7 of different ejector groups, D8, D9, D10 by PLC, wherein the 1# ejector simply is expressed as the 1# list for combustion gas separately, it is single that the 2# ejector simply is expressed as 2# for combustion gas separately, it is single that the 3# ejector simply is expressed as 3# for combustion gas separately, and it is single that the 4# ejector simply is expressed as 4# for combustion gas separately;

After reaching 3 minutes as P3≤0.1Mpa, PLC controls 07 end conducting, and auxiliary reclay C7 is a path, its normally opened contact C7 closure, and solenoid valve D7 conducting, the 1# ejector is by compression ignite gas in the direct-furnish of spherical tank gas, and operating mode is that 1# is single;

If it is stable that above-mentioned operating mode still can not guarantee P3, after P3≤0.095Mpa reaches 10 seconds or after P3≤0.1Mpa reached 3 minutes, PLC controlled 08 end conducting, auxiliary reclay C8 connects, its normally opened contact C8 closure, compression ignite gas, 07 end of PLC open circuit simultaneously during solenoid valve D8 conducting, 2# ejector are directly supplied by spherical tank gas, auxiliary reclay C7 opens circuit, its normally opened contact C7 dead electricity is opened, and solenoid valve D7 dead electricity is closed, and operating mode is that 2# is single;

If the 2# ejector directly in the confession behind the compression ignite gas, makes P3 pressure constantly rise by spherical tank gas, after P3 〉=0.15Mpa reaches 3 minutes or P3 〉=0.155Mpa10 after second, PLC controls 08 end open circuit, auxiliary reclay C8 opens circuit, and its normally opened contact C8 dead electricity is opened, and solenoid valve D8 dead electricity is closed; Meanwhile PLC controls 07 end conducting, and auxiliary reclay C7 connects, its normally opened contact C7 closure, and solenoid valve D7 conducting is finished and is closed the 2# ejector, opens the operation of 1# ejector, and it is single that operating mode turns back to 1#;

If by the 2# ejector by compression ignite gas in the direct-furnish of spherical tank gas after, when the pressure of P3 remained between the 0.1-0.15Mpa, then this operating mode kept 2# single always;

Behind compression ignite gas in directly supplying by spherical tank gas by the 2# ejector, when the pressure of P3 can not remain on 0.1-0.15Mpa, then after P3≤0.1Mpa reaches 3 minutes or P3≤0.095Mpa10 after second, PLC controls 07 end and the conducting simultaneously of 08 end, auxiliary reclay C7, C8 connect simultaneously, its normally opened contact C7, C8 are closed simultaneously, solenoid valve D7, D8 conducting simultaneously, finish the operation that 1#, 2# ejector move simultaneously, work condition state is that 1# list+2# is single, by that analogy, the 15 kinds of single valves of increase and decrease item by item that are achieved as follows directly supply the combining form of combustion gas:

[1# is single] ← → [2# is single] ← → [1# list+2# is single] ← → [3# is single] ← → [1# list+3# is single] ← → [2# list+3# is single] ← → [1# list+2# list+3# is single] ← → [4# is single] ← → [1# list+4# is single] ← → [2# list+4# is single] ← → [1# list+2# list+4# is single] ← → [3# list+4# is single] ← → [1# list+3# list+4# is single] ← → [2# list+3# list+4# is single] ← → [1# list+2# list+3# list+4# is single];

After P2 dropped to 0.15Mpa by 0.2Mpa, according to the variation of P3, correspondence went out the start-stop combination of the dual-coil electromagnetic valve of following different ejectors again:

If P3≤0.1Mpa reaches 3 minutes or P3≤0.95Mpa reached for 10 seconds, PLC controls 03 end, 07 end conducting, and auxiliary reclay C3, C7 connect, its normally opened contact C3, C7 closure, solenoid valve D3, D7 conducting, the high pressure injection spherical tank of the two ejectors of 1# comes compression ignite gas in the gas confession, and work condition state is that 1# is two;

If above operating mode can make P3 pressure maintain 0.1Mpa to 0.15Mpa, it is two then to keep its operating mode 1#; If P3 pressure raises, when P3 〉=0.15Mpa reaches 3 minutes or after P3 〉=0.155Mpa reached for 10 seconds, PLC controlled 03 end, 07 end open circuit, auxiliary reclay C3, C7 open circuit, and its normally opened contact C3, C7 open, and solenoid valve D3, D7 dead electricity are closed;

If P3 pressure descends, when P3≤0.1Mpa reaches 3 minutes or after P3≤0.095Mpa reached for 10 seconds, PLC controlled 04 end, 08 end conducting, auxiliary reclay C4, C8 connect, its normally opened contact C4, C8 closure, solenoid valve D4, D8 conducting, the 2# ejector puts into operation, meanwhile PLC controls 03 end, 07 end open circuit, auxiliary reclay C3, C7 open circuit, and its normally opened contact C3, C7 open, and solenoid valve D3, D7 dead electricity are closed, the 1# ejector is out of service, and work condition state is that 2# is two;

If the 2# ejector puts into operation, the P3 pressure stability is between 0.1Mpa to 0.15Mpa, and it is two then to keep its operating mode 2#;

If the 2# ejector puts into operation, P3 pressure raises, when P3 〉=0.15Mpa reaches 3 minutes or after P3 〉=0.155Mpa reached for 10 seconds, PLC controls 03 end, 07 end conducting, 04 end, 08 end open circuit, and auxiliary reclay C3, C7 connect, C4, C8 open circuit, its normally opened contact C3, C7 closure, C4, C8 open, solenoid valve D3, D7 conducting, D4, D8 dead electricity are closed, the 1# ejector puts into operation, and the 2# ejector is out of service, and it is two to return operating mode 1#;

If P3 pressure descends, when P3≤0.1Mpa reaches 3 minutes or after P3≤0.095Mpa reached for 10 seconds, the conducting simultaneously of PLC control 03,07,04,08 end, auxiliary reclay C3, C7, C4, C8 all connect, its normally opened contact C3, C7, C4, C8 are all closed, solenoid valve D3, D7, the equal conducting of D4, D8,1# ejector, 2# ejector put into operation simultaneously, and work condition state is that 1# couple+2# is two, by that analogy, be achieved as follows 15 kinds of combining forms of increase and decrease item by item that bivalve mixes confession:

[1# two] ← → [2# is two] ← → [1# two+2# is two] ← → [3# is two] ← → [1# two+3# is two] ← → [2# two+3# Dan Shuan] ← → [1# is two+2# is two+3# is two] ← → [4# is two] ← → [1# two+4# is two] ← → [2# two+4# is two] ← → [1# is two+2# is two+4# is two] ← → [3# two+4# is two] ← → [1# is two+3# is two+4# is two] ← → [2# is two+3# is two+4# is two] ← → [1# is two+and 2# is two+and 3# is two+4# is two];

At last behind P2 pressure＜0.05Mpa, PLC control 01,02,03,04,05,06,07,08,09,10 ends are all opened a way, and all auxiliary reclays all open circuit, and all solenoid valves all cut off the power supply and cut out and report to the police;

More than various operating mode flow processs show on supervisory control comuter that all the real-time traffic of the gas meter Q1 of the high-pressure air source under each working condition, the gas meter Q2 of spherical tank low pressure natural gas also is sent in the middle of the monitoring image of supervisory control comuter by PLC.

Claims (2)

1. ejector group rock gas intelligence peak regulation (value) the peak regulation method of installing, it is characterized in that: will key in peak regulation step control program software in the supervisory control comuter and download in the programmable logic controller PLC storage in this device, start this device, its control program enters the starting stage, and the supervisory control comuter in this device enters the program running monitored state simultaneously; When the current gas pressure peak value analogue signal in the rock gas gas storage spherical tank by this device in gas tank gaseous-pressure transmitter P2 deliver to the corresponding inlet of PLC, after entering PLC, CPU wherein handles, compare the back with setting peak parameters in the CPU storage and judge whether peak value has dropped to degree from pressure regulation to gas distributing system that can't can replenish combustion gas through, if, PLC sends the instruction that starts this device repeat circuit and solenoid valve, make the combustion gas ejector in this device be combined into the multiple combustion gas ejector assemblying body that adapts to current additional air feed, meanwhile, in PLC, under the control of CPU, start high pressure admission main valve and spherical tank and come the air inlet of gas main valve.

2. the peak regulation method of a kind of ejector group rock gas intelligence peak regulation according to claim 1 (value) device, it is characterized in that: peak regulation (value) step is as follows:

The give vent to anger real-time pressure signal of pressure transmitter P3 of the pressure transmitter P1 of high-pressure air source, gas tank gaseous-pressure transmitter P2, combustion gas ejector group is sent into PLC, by the break-make of control program software by control auxiliary reclay C that is contained in the PLC, reach the break-make of control electromagnetic valve D;

After the pressure of P1 was greater than 0.38Mpa, after analyzing via PLC inner control program software, the 01 end closure of PLC made auxiliary reclay C1 conducting, the normally opened contact closure of C1, and solenoid valve D1 power turn-on, solenoid valve D1 opens, and the high pressure admission main valve is opened;

When the pressure of P2 between the 0.15Mpa to 0.2Mpa the time, after PLC inner control program software was analyzed, correspondence went out the 02 end closure of PLC, make auxiliary reclay C2 conducting, the normally opened contact closure of C2, solenoid valve D2 power turn-on, solenoid valve D2 opens, and makes spherical tank come the gas main valve to open;

Under the condition that above P1 and two conditions of P2 satisfy simultaneously, variation according to P3, provide the start-stop combination of the single solenoid valve D7 of different ejector groups, D8, D9, D10 by PLC, wherein the 1# ejector simply is expressed as the 1# list for combustion gas separately, it is single that the 2# ejector simply is expressed as 2# for combustion gas separately, it is single that the 3# ejector simply is expressed as 3# for combustion gas separately, and it is single that the 4# ejector simply is expressed as 4# for combustion gas separately;

After reaching 3 minutes as P3≤0.1Mpa, PLC controls 07 end conducting, and auxiliary reclay C7 is a path, its normally opened contact C7 closure, and solenoid valve D7 conducting, the 1# ejector is by compression ignite gas in the direct-furnish of spherical tank gas, and operating mode is that 1# is single;

If it is stable that above-mentioned operating mode still can not guarantee P3, after P3≤0.095Mpa reaches 10 seconds or after P3≤0.1Mpa reached 3 minutes, PLC controlled 08 end conducting, auxiliary reclay C8 connects, its normally opened contact C8 closure, compression ignite gas, 07 end of PLC open circuit simultaneously during solenoid valve D8 conducting, 2# ejector are directly supplied by spherical tank gas, auxiliary reclay C7 opens circuit, its normally opened contact C7 dead electricity is opened, and solenoid valve D7 dead electricity is closed, and operating mode is that 2# is single;

If the 2# ejector directly in the confession behind the compression ignite gas, makes P3 pressure constantly rise by spherical tank gas, after P3 〉=0.15Mpa reaches 3 minutes or P3 〉=0.155Mpa10 after second, PLC controls 08 end open circuit, auxiliary reclay C8 opens circuit, and its normally opened contact C8 dead electricity is opened, and solenoid valve D8 dead electricity is closed; Meanwhile PLC controls 07 end conducting, and auxiliary reclay C7 connects, its normally opened contact C7 closure, and solenoid valve D7 conducting is finished and is closed the 2# ejector, opens the operation of 1# ejector, and it is single that operating mode turns back to 1#;

If by the 2# ejector by compression ignite gas in the direct-furnish of spherical tank gas after, when the pressure of P3 remained between the 0.1-0.15Mpa, then this operating mode kept 2# single always;

Behind compression ignite gas in directly supplying by spherical tank gas by the 2# ejector, when the pressure of P3 can not remain on 0.1-0.15Mpa, then after P3≤0.1Mpa reaches 3 minutes or P3≤0.095Mpa10 after second, PLC controls 07 end and the conducting simultaneously of 08 end, auxiliary reclay C7, C8 connect simultaneously, its normally opened contact C7, C8 are closed simultaneously, solenoid valve D7, D8 conducting simultaneously, finish the operation that 1#, 2# ejector move simultaneously, work condition state is that 1# list+2# is single, by that analogy, the 15 kinds of single valves of increase and decrease item by item that are achieved as follows directly supply the combining form of combustion gas:

[1# is single] ← → [2# is single] ← → [1# list+2# is single] ← → [3# is single] ← → [1# list+3# is single] ← → [2# list+3# is single] ← → [1# list+2# list+3# is single] ← → [4# is single] ← → [1# list+4# is single] ← → [2# list+4# is single] ← → [1# list+2# list+4# is single] ← → [3# list+4# is single] ← → [1# list+3# list+4# is single] ← → [2# list+3# list+4# is single] ← → [1# list+2# list+3# list+4# is single];

After P2 dropped to 0.15Mpa by 0.2Mpa, according to the variation of P3, correspondence went out the start-stop combination of the dual-coil electromagnetic valve of following different ejectors again:

If P3≤0.1Mpa reaches 3 minutes or P3≤0.95Mpa reached for 10 seconds, PLC controls 03 end, 07 end conducting, and auxiliary reclay C3, C7 connect, its normally opened contact C3, C7 closure, solenoid valve D3, D7 conducting, the high pressure injection spherical tank of the two ejectors of 1# comes compression ignite gas in the gas confession, and work condition state is that 1# is two;

If above operating mode can make P3 pressure maintain 0.1Mpa to 0.15Mpa, it is two then to keep its operating mode 1#;

If P3 pressure raises, when P3 〉=0.15Mpa reaches 3 minutes or after P3 〉=0.155Mpa reached for 10 seconds, PLC controlled 03 end, 07 end open circuit, auxiliary reclay C3, C7 open circuit, and its normally opened contact C3, C7 open, and solenoid valve D3, D7 dead electricity are closed;

If P3 pressure descends, when P3≤0.1Mpa reaches 3 minutes or after P3≤0.095Mpa reached for 10 seconds, PLC controlled 04 end, 08 end conducting, auxiliary reclay C4, C8 connect, its normally opened contact C4, C8 closure, solenoid valve D4, D8 conducting, the 2# ejector puts into operation, meanwhile PLC controls 03 end, 07 end open circuit, auxiliary reclay C3, C7 open circuit, and its normally opened contact C3, C7 open, and solenoid valve D3, D7 dead electricity are closed, the 1# ejector is out of service, and work condition state is that 2# is two;

If the 2# ejector puts into operation, the P3 pressure stability is between 0.1Mpa to 0.15Mpa, and it is two then to keep its operating mode 2#;

If the 2# ejector puts into operation, P3 pressure raises, when P3 〉=0.15Mpa reaches 3 minutes or after P3 〉=0.155Mpa reached for 10 seconds, PLC controls 03 end, 07 end conducting, 04 end, 08 end open circuit, and auxiliary reclay C3, C7 connect, C4, C8 open circuit, its normally opened contact C3, C7 closure, C4, C8 open, solenoid valve D3, D7 conducting, D4, D8 dead electricity are closed, the 1# ejector puts into operation, and the 2# ejector is out of service, and it is two to return operating mode 1#;

If P3 pressure descends, when P3≤0.1Mpa reaches 3 minutes or after P3≤0.095Mpa reached for 10 seconds, the conducting simultaneously of PLC control 03,07,04,08 end, auxiliary reclay C3, C7, C4, C8 all connect, its normally opened contact C3, C7, C4, C8 are all closed, solenoid valve D3, D7, the equal conducting of D4, D8,1# ejector, 2# ejector put into operation simultaneously, and work condition state is that 1# couple+2# is two, by that analogy, be achieved as follows 15 kinds of combining forms of increase and decrease item by item that bivalve mixes confession:

[1# two] ← → [2# is two] ← → [1# two+2# is two] ← → [3# is two] ← → [1# two+3# is two] ← → [2# two+3# Dan Shuan] ← → [1# is two+2# is two+3# is two] ← → [4# is two] ← → [1# two+4# is two] ← → [2# two+4# is two] ← → [1# is two+2# is two+4# is two] ← → [3# two+4# is two] → [1# is two+3# is two+4# is two] ← → [2# is two+3# is two+4# is two] ← → [1# is two+and 2# is two+and 3# is two+4# is two];

At last behind P2 pressure＜0.05Mpa, PLC control 01,02,03,04,05,06,07,08,09,10 ends are all opened a way, and all auxiliary reclays all open circuit, and all solenoid valves all cut off the power supply and cut out and report to the police;

More than various operating mode flow processs show on supervisory control comuter that all the real-time traffic of the gas meter Q1 of the high-pressure air source under each working condition, the gas meter Q2 of spherical tank low pressure natural gas also is sent in the middle of the monitoring image of supervisory control comuter by PLC.

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