CN111287977A - One-key driving under sequential control of hydrogen water ring pump - Google Patents
One-key driving under sequential control of hydrogen water ring pump Download PDFInfo
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- CN111287977A CN111287977A CN202010127228.2A CN202010127228A CN111287977A CN 111287977 A CN111287977 A CN 111287977A CN 202010127228 A CN202010127228 A CN 202010127228A CN 111287977 A CN111287977 A CN 111287977A
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- hydrogen
- valve
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- pump
- water ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
Abstract
The invention discloses a hydrogen water ring pump sequential control one-key driving, which comprises the following steps: s1: manually selecting 'original driving' or 'grid-connected driving'; s2: press "START" button and confirm: t1 sequence program starts: 1) hot standby input: ON (electrical signal); 2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA; 3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa; 4) allow closing to drop into CSD _ C1803A: ON; 5) emergency stop button reset ESD _ C1803A: and (4) ON. The invention overcomes the characteristics of frequent and unstable external operation and low working efficiency of the hydrogen water ring pump, realizes sequence control one-key starting and automatic load lifting after the unit inspection is confirmed on site, increases the backflow and inlet and outlet grid-connected automatic valve, can completely realize the unmanned operation of the hydrogen water ring pump during the driving, automatically controls the hydrogen pressure, and quickly and automatically lifts the load, thereby improving the working efficiency, releasing the operation time of operators, and reducing the standard difference of the pressure to 0.15 after the transformation.
Description
Technical Field
The invention relates to the technical field of modification of an auxiliary valve of a hydrogen water ring pump, in particular to a one-key-controlled start-up of a hydrogen water ring pump.
Background
The hydrogen compression adopts the serious transport of hydrogen water ring pump, and equipment operation is stable, has following two problems at the actual motion in-process: 1. the water ring pump needs manual operation when started, and the problems of misoperation and manual operation amount exist; 2. the pressure control is not stable enough, and the pressure fluctuation is greatly promoted when the load is loaded.
The method is mainly influenced by the following conditions: 1. the field manual valve operation has certain requirements on experience and reaction of operators, and risks of misoperation and large operation fluctuation exist during operation; 2. the upstream pressure control requirement is high, the control range is small and is 0.8-1.5KPa, the pressure is mainly controlled by the upstream reactor, and the pressure fluctuates; 3. the load of the upstream reactor is frequently adjusted, and the automatic control cannot be completed and needs manual intervention.
Disclosure of Invention
The invention aims to provide a hydrogen water ring pump sequential control one-key driving method, which has the advantage of convenience in use of the hydrogen water ring pump and solves the problem of inconvenience in use of the hydrogen water ring pump.
In order to achieve the purpose, the invention provides the following technical scheme: the hydrogen water ring pump sequential control one-key driving method comprises the following steps:
s1: manually selecting 'original driving' or 'grid-connected driving';
s2: press "START" button and confirm:
t1 sequence program starts:
1) hot standby input: ON (electrical signal);
2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA;
3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa;
4) allow closing to drop into CSD _ C1803A: ON;
5) emergency stop button reset ESD _ C1803A: ON;
6) scrubber vent valve 4 HV-1802: ON;
7) electric heating signal Y14_ 1803A: OFF;
8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%;
9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment).
S3: program setting:
1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable);
2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable);
3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent;
4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable);
5) de-distribution station regulating valve FV4_1808 AMV: 0 percent;
6) system reflux valve PIC _1803 BMV: 0 percent.
After the step T2 is executed in place, a reminding mark appears;
s4: the hydrogen pump was started manually on site.
T3 water environmental protection start signal: YI4_ C1803A feedback as "on":
s5: the scrub column vent shut-off valve 4HV-1802 is "closed".
T4 scrubber vent dump valve 4HV-1802F feeds "off":
s6: interlock deactivation ESD _ C1803A;
s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable);
a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa;
t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809;
s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809;
t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)):
s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%;
T8FV4_1808A，MV＝100％。
T9PIC4_1806，MV＝0％。
t10 when PI4_1807 > 70 KPa.
S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806;
the T11 routine ends.
Preferably, for the one-key start of the hydrogen water ring pump, the automatic load lifting and the automatic hydrogen pressure control are realized through the following formula: the return valve 4FV _1811AMV [ (10800-78 × Σ current-1600 ]/78.4).
Preferably, the preparation before starting the pump by the original start or the grid-connected start comprises the following steps:
6) the external operation confirms that the liquid level of the gearbox is more than or equal to 30 percent, and the turning is finished;
7) confirming that the field equipment pipeline is intact, and confirming that the temperature and the pressure of pure water and circulating water are normal;
8) normal overflow of the water seal liquid level of the washing tower;
9) the hydrogen on-line detection manual valve is switched to the front of the inlet of the hydrogen pump;
the nitrogen substitution was completed.
Preferably, in T5:
1)PIT4_1809＞70KPa；
2) at least 2 operating signals of the water ring pump 5 are 'operating' (YI1_ C1802, Y13_ C1801B, YI4_ C1803B, Y14_ C1803A and Y13_ C1801C).
Preferably, in T7:
1) the outlet pressure PI4_1807 of the hydrogen pump is approximately equal to the outlet pressure PIT4_1809 of the hydrogen pump gas-liquid separator, the outlet pressure PIT4_0515 of the hydrogen pump gas-liquid separator is approximately equal to the outlet pressure PIT of the hydrogen pump, and the stability is 2 minutes, (the deviation is less than 1KPa (adjustable));
2) the manual button is fed back as "on" (a manual button is set, and the button is clicked by an operator when the hydrogen concentration is proper).
Compared with the prior art, the invention has the following beneficial effects: the invention overcomes the characteristics of frequent and unstable external operation and low working efficiency of the hydrogen water ring pump, realizes sequence control one-key starting and automatic load lifting after the unit inspection is confirmed on site, increases the backflow and inlet and outlet grid-connected automatic valve, can completely realize the unmanned operation of the hydrogen water ring pump during the driving, automatically controls the hydrogen pressure, and quickly and automatically lifts the load, thereby improving the working efficiency, releasing the operation time of operators, and reducing the standard difference of the pressure to 0.15 after the transformation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The hydrogen water ring pump sequential control one-key driving method comprises the following steps:
s1: manually selecting 'original driving' or 'grid-connected driving';
s2: press "START" button and confirm:
t1 sequence program starts:
1) hot standby input: ON (electrical signal);
2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA;
3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa;
4) allow closing to drop into CSD _ C1803A: ON;
5) emergency stop button reset ESD _ C1803A: ON;
6) scrubber vent valve 4 HV-1802: ON;
7) electric heating signal Y14_ 1803A: OFF;
8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%;
9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment).
S3: program setting:
1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable);
2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable);
3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent;
4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable);
5) de-distribution station regulating valve FV4_1808 AMV: 0 percent;
6) system reflux valve PIC _1803 BMV: 0 percent.
After the step T2 is executed in place, a reminding mark appears;
s4: the hydrogen pump was started manually on site.
T3 water environmental protection start signal: YI4_ C1803A feedback as "on":
s5: the scrub column vent shut-off valve 4HV-1802 is "closed".
T4 scrubber vent dump valve 4HV-1802F feeds "off":
s6: interlock deactivation ESD _ C1803A;
s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable);
a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa;
t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809;
s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809;
t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)):
s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%;
T8FV4_1808A，MV＝100％。
T9PIC4_1806，MV＝0％。
t10 when PI4_1807 > 70 KPa.
S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806;
the T11 routine ends.
Example 1
The hydrogen water ring pump sequential control one-key driving method comprises the following steps: s1: manually selecting 'original driving' or 'grid-connected driving'; s2: press "START" button and confirm: t1 sequence program starts: 1) hot standby input: ON (electrical signal); 2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA; 3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa; 4) allow closing to drop into CSD _ C1803A: ON; 5) emergency stop button reset ESD _ C1803A: ON; 6) scrubber vent valve 4 HV-1802: ON; 7) electric heating signal Y14_ 1803A: OFF; 8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%; 9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment). S3: program setting: 1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable); 2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable); 3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent; 4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable); 5) de-distribution station regulating valve FV4_1808 AMV: 0 percent; 6) system reflux valve PIC _1803 BMV: 0 percent. After the step T2 is executed in place, a reminding mark appears; s4: the hydrogen pump was started manually on site. T3 water environmental protection start signal: YI4_ C1803A feedback as "on": s5: the scrub column vent shut-off valve 4HV-1802 is "closed". T4 scrubber vent dump valve 4HV-1802F feeds "off": s6: interlock deactivation ESD _ C1803A; s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable); a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa; t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809; s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809; t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)): s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%; t8FV4_1808A, MV 100%. T9PIC4_1806, MV 0%. T10 when PI4_1807 > 70 KPa. S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806; the T11 routine ends.
Example 2
In example 1, the following additional steps were added:
in order to start the hydrogen water ring pump by one key, the automatic load lifting is realized by the following formula, and the hydrogen pressure is automatically controlled: the return valve 4FV _1811AMV [ (10800-78 × Σ current-1600 ]/78.4).
The hydrogen water ring pump sequential control one-key driving method comprises the following steps: s1: manually selecting 'original driving' or 'grid-connected driving'; s2: press "START" button and confirm: t1 sequence program starts: 1) hot standby input: ON (electrical signal); 2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA; 3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa; 4) allow closing to drop into CSD _ C1803A: ON; 5) emergency stop button reset ESD _ C1803A: ON; 6) scrubber vent valve 4 HV-1802: ON; 7) electric heating signal Y14_ 1803A: OFF; 8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%; 9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment). S3: program setting: 1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable); 2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable); 3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent; 4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable); 5) de-distribution station regulating valve FV4_1808 AMV: 0 percent; 6) system reflux valve PIC _1803 BMV: 0 percent. After the step T2 is executed in place, a reminding mark appears; s4: the hydrogen pump was started manually on site. T3 water environmental protection start signal: YI4_ C1803A feedback as "on": s5: the scrub column vent shut-off valve 4HV-1802 is "closed". T4 scrubber vent dump valve 4HV-1802F feeds "off": s6: interlock deactivation ESD _ C1803A; s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable); a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa; t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809; s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809; t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)): s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%; t8FV4_1808A, MV 100%. T9PIC4_1806, MV 0%. T10 when PI4_1807 > 70 KPa. S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806; the T11 routine ends.
Example 3
In example 2, the following steps were added:
the preparation before starting the pump by 'original driving' or 'grid-connected driving' comprises the following steps: 1) the external operation confirms that the liquid level of the gearbox is more than or equal to 30 percent, and the turning is finished; 2) confirming that the field equipment pipeline is intact, and confirming that the temperature and the pressure of pure water and circulating water are normal; 3) normal overflow of the water seal liquid level of the washing tower; 4) the hydrogen on-line detection manual valve is switched to the front of the inlet of the hydrogen pump; 5) the nitrogen substitution was completed.
The hydrogen water ring pump sequential control one-key driving method comprises the following steps: s1: manually selecting 'original driving' or 'grid-connected driving'; s2: press "START" button and confirm: t1 sequence program starts: 1) hot standby input: ON (electrical signal); 2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA; 3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa; 4) allow closing to drop into CSD _ C1803A: ON; 5) emergency stop button reset ESD _ C1803A: ON; 6) scrubber vent valve 4 HV-1802: ON; 7) electric heating signal Y14_ 1803A: OFF; 8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%; 9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment). S3: program setting: 1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable); 2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable); 3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent; 4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable); 5) de-distribution station regulating valve FV4_1808 AMV: 0 percent; 6) system reflux valve PIC _1803 BMV: 0 percent. After the step T2 is executed in place, a reminding mark appears; s4: the hydrogen pump was started manually on site. T3 water environmental protection start signal: YI4_ C1803A feedback as "on": s5: the scrub column vent shut-off valve 4HV-1802 is "closed". T4 scrubber vent dump valve 4HV-1802F feeds "off": s6: interlock deactivation ESD _ C1803A; s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable); a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa; t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809; s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809; t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)): s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%; t8FV4_1808A, MV 100%. T9PIC4_1806, MV 0%. T10 when PI4_1807 > 70 KPa. S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806; the T11 routine ends.
Example 4
In example 3, the following steps were added:
in T5: 1) PIT4_1809 > 70 KPa; 2) at least 2 operating signals of the water ring pump 5 are 'operating' (YI1_ C1802, Y13_ C1801B, YI4_ C1803B, Y14_ C1803A and Y13_ C1801C).
The hydrogen water ring pump sequential control one-key driving method comprises the following steps: s1: manually selecting 'original driving' or 'grid-connected driving'; s2: press "START" button and confirm: t1 sequence program starts: 1) hot standby input: ON (electrical signal); 2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA; 3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa; 4) allow closing to drop into CSD _ C1803A: ON; 5) emergency stop button reset ESD _ C1803A: ON; 6) scrubber vent valve 4 HV-1802: ON; 7) electric heating signal Y14_ 1803A: OFF; 8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%; 9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment). S3: program setting: 1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable); 2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable); 3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent; 4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable); 5) de-distribution station regulating valve FV4_1808 AMV: 0 percent; 6) system reflux valve PIC _1803 BMV: 0 percent. After the step T2 is executed in place, a reminding mark appears; s4: the hydrogen pump was started manually on site. T3 water environmental protection start signal: YI4_ C1803A feedback as "on": s5: the scrub column vent shut-off valve 4HV-1802 is "closed". T4 scrubber vent dump valve 4HV-1802F feeds "off": s6: interlock deactivation ESD _ C1803A; s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable); a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa; t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809; s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809; t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)): s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%; t8FV4_1808A, MV 100%. T9PIC4_1806, MV 0%. T10 when PI4_1807 > 70 KPa. S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806; the T11 routine ends.
Example 5
In example 4, the following steps were added:
in T7: 1) the outlet pressure PI4_1807 of the hydrogen pump is approximately equal to the outlet pressure PIT4_1809 of the hydrogen pump gas-liquid separator, the outlet pressure PIT4_0515 of the hydrogen pump gas-liquid separator is approximately equal to the outlet pressure PIT of the hydrogen pump, and the stability is 2 minutes, (the deviation is less than 1KPa (adjustable)); 2) the manual button is fed back as "on" (a manual button is set, and the button is clicked by an operator when the hydrogen concentration is proper).
The hydrogen water ring pump sequential control one-key driving method comprises the following steps: s1: manually selecting 'original driving' or 'grid-connected driving'; s2: press "START" button and confirm: t1 sequence program starts: 1) hot standby input: ON (electrical signal); 2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA; 3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa; 4) allow closing to drop into CSD _ C1803A: ON; 5) emergency stop button reset ESD _ C1803A: ON; 6) scrubber vent valve 4 HV-1802: ON; 7) electric heating signal Y14_ 1803A: OFF; 8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%; 9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment). S3: program setting: 1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable); 2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable); 3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent; 4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable); 5) de-distribution station regulating valve FV4_1808 AMV: 0 percent; 6) system reflux valve PIC _1803 BMV: 0 percent. After the step T2 is executed in place, a reminding mark appears; s4: the hydrogen pump was started manually on site. T3 water environmental protection start signal: YI4_ C1803A feedback as "on": s5: the scrub column vent shut-off valve 4HV-1802 is "closed". T4 scrubber vent dump valve 4HV-1802F feeds "off": s6: interlock deactivation ESD _ C1803A; s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable); a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa; t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809; s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809; t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)): s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%; t8FV4_1808A, MV 100%. T9PIC4_1806, MV 0%. T10 when PI4_1807 > 70 KPa. S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806; the T11 routine ends.
When the intelligent control system is used, one-key starting is carried out in control for 12 months, the sequence control starting logic is used for 14 times, the system is normally used at present, an expected result is basically achieved, automatic sequence control starting and load lifting are achieved, pressure control is stable, the workload of a field operator is reduced by 95%, and unmanned operation is achieved by DCS operators in normal operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The hydrogen water ring pump is in order controlling a key driving, its characterized in that: the method comprises the following steps:
s1: manually selecting 'original driving' or 'grid-connected driving';
s2: press "START" button and confirm:
t1 sequence program starts:
1) hot standby input: ON (electrical signal);
2) the sum of the current of the device in the third period is more than or equal to 45KA and less than 65 (adjustable 0-200) KA;
3) the inlet PIA 4-1803 of the hydrogen pump is more than or equal to 1 (adjustable 0-5.0) KPa;
4) allow closing to drop into CSD _ C1803A: ON;
5) emergency stop button reset ESD _ C1803A: ON;
6) scrubber vent valve 4 HV-1802: ON;
7) electric heating signal Y14_ 1803A: OFF;
8) gas-liquid separator liquid level LIT4_ 0515: 45% -55%;
9) the oxygen content in gas detection is less than or equal to 2 percent (quality inspection analysis, manual judgment).
S3: program setting:
1) hydrogen pump 1# return valve PICA4_0515 MV: 55% (settable);
2) hydrogen pump 2# reflux valve 4FV1811 AMV: 90% (settable);
3) hydrogen pump inlet regulating valve 4FV1812 AMV: 100 percent;
4) hydrogen vent valve PIC4 — 1806 MV: 65% (settable);
5) de-distribution station regulating valve FV4_1808 AMV: 0 percent;
6) system reflux valve PIC _1803 BMV: 0 percent.
After the step T2 is executed in place, a reminding mark appears;
s4: the hydrogen pump was started manually on site.
T3 water environmental protection start signal: YI4_ C1803A feedback as "on":
s5: the scrub column vent shut-off valve 4HV-1802 is "closed".
T4 scrubber vent dump valve 4HV-1802F feeds "off":
s6: interlock deactivation ESD _ C1803A;
s7: hydrogen pump a2# reflux valve 4FV _1811A is targeted (corresponding to a coefficient adjustable) at MV value { (10800 adjustable) -78 (adjustable) ∈ three-phase current-1600 (adjustable) }/78.4 (adjustable), and is slowly closed at a rate of 1%/2S (adjustable), wherein the first 10 seconds (adjustable) closing rate is 1%/5S (adjustable);
a T5 hydrogen pump A1# reflux valve PIC4_0512 is set to be automatic, and SV is 1.3 (adjustable) KPa;
t6 when PI4_1807 > 70KPa, outlet vent valve front pressure PL4_1807 equals hydrogen distribution station pressure PIT4_ 1809;
s8: the emptying valve PIC4_1806 is set as 'automatic' SV ═ PIT4_ 1809;
t7 hydrogen pump inlet pressure PLA4 — 803: 1.5KPa (tuneable) stable for 2 minutes (tuneable), (deviation less than 0.3KPa (tuneable)):
s9: the emptying valve PIC4_1806 is set to "manual", the de-dispensing station automatic control valve FV4_1808A is set to "manual", and is opened slowly at a rate of 1%/3S (adjustable) until MV becomes 100%;
T8FV4_1808A，MV＝100％。
T9PIC4_1806，MV＝0％。
t10 when PI4_1807 > 70 KPa.
S10: the hydrogen gas emptying adjusting valve of the distribution table is set as 'automatic' SV 75KPa (settable) at the emptying valve PIC4_10 ═ 806;
the T11 routine ends.
2. The hydrogen water ring pump in-sequence control one-key start-up as claimed in claim 1, wherein: in order to start the hydrogen water ring pump by one key, the automatic load lifting is realized by the following formula, and the hydrogen pressure is automatically controlled: the return valve 4FV _1811AMV [ (10800-78 × Σ current-1600 ]/78.4).
3. The hydrogen water ring pump in-sequence control one-key start-up as claimed in claim 1, wherein: the preparation before starting the pump by the original start or the grid-connected start comprises the following steps:
1) the external operation confirms that the liquid level of the gearbox is more than or equal to 30 percent, and the turning is finished;
2) confirming that the field equipment pipeline is intact, and confirming that the temperature and the pressure of pure water and circulating water are normal;
3) normal overflow of the water seal liquid level of the washing tower;
4) the hydrogen on-line detection manual valve is switched to the front of the inlet of the hydrogen pump;
5) the nitrogen substitution was completed.
4. The hydrogen water ring pump in-sequence control one-key start-up as claimed in claim 1, wherein: in the T5:
1)PIT4_1809＞70KPa；
2) at least 2 operating signals of the water ring pump 5 are 'operating' (YI1_ C1802, Y13_ C1801B, YI4_ C1803B, Y14_ C1803A and Y13_ C1801C).
5. The hydrogen water ring pump in-sequence control one-key start-up as claimed in claim 1, wherein: in the T7:
1) the outlet pressure PI4_1807 of the hydrogen pump is approximately equal to the outlet pressure PIT4_1809 of the hydrogen pump gas-liquid separator, the outlet pressure PIT4_0515 of the hydrogen pump gas-liquid separator is approximately equal to the outlet pressure PIT of the hydrogen pump, and the stability is 2 minutes, (the deviation is less than 1KPa (adjustable));
2) the manual button is fed back as "on" (a manual button is set, and the button is clicked by an operator when the hydrogen concentration is proper).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112783114A (en) * | 2020-12-09 | 2021-05-11 | 万华化学(宁波)氯碱有限公司 | Method and system for one-key starting hydrogen pump sequential control of hydrogen water-ring compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112783114A (en) * | 2020-12-09 | 2021-05-11 | 万华化学(宁波)氯碱有限公司 | Method and system for one-key starting hydrogen pump sequential control of hydrogen water-ring compressor |
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Application publication date: 20200616 |