CN2876385Y - Device for controlling power generating plant circulation water pump starting - Google Patents
Device for controlling power generating plant circulation water pump starting Download PDFInfo
- Publication number
- CN2876385Y CN2876385Y CN 200520144408 CN200520144408U CN2876385Y CN 2876385 Y CN2876385 Y CN 2876385Y CN 200520144408 CN200520144408 CN 200520144408 CN 200520144408 U CN200520144408 U CN 200520144408U CN 2876385 Y CN2876385 Y CN 2876385Y
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- Prior art keywords
- water pump
- circulating water
- detection unit
- state detection
- unit
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Abstract
The utility model discloses a standby start-up control device of water circulating pump of power plant, comprising: a manual stop position detection unit of the No.1 water circulating pump; an automatic mode status detection unit of the No.1 water circulating pump with its output end connected with an inverter in series; a start-up status detection unit of the No.1 water circulating pump; an operation feedback detection unit of the No.1 water circulating pump with its output connected with an inverter in series; an automatic mode status detection unit of the No.2 water circulating pump; a DCS mode feedback detection unit of the No. 2 water circulating pump; an RS trigger; a standby start-up control unit of the No. 2 water circulating pump. By using the utility model, standby pumps may be started up jointly when tripping occurs during operation of a single water circulating pump, which guarantees both economical operation of the assembly and its safety.
Description
Technical field
The present invention relates to a kind of generating plant circulation-water pump of controlling and be equipped with the device that starts mutually.
Background technique
At present, two circulating water pump of the general preparation of power station monoblock are worked simultaneously water vapor are cooled off, usually three seasons of spring, summer, autumn because ambient temperature is higher, two circulating water pump must be worked simultaneously and could be satisfied the water vapor requirement of in time lowering the temperature.
But, because the winter environment temperature is lower, only can satisfy the demand of cooling at northern area by a water pump operation, save a large amount of station services, make unit operation more economical.Yet, when only starting a water pump operation, in case the tripping operation of this water pump generation problem is stopped transport, will produce unit safety and have a strong impact on, even will make the unplanned stoppage in transit of unit, and cause the damage of equipment component.
Therefore, need to design a kind of generating plant circulation-water pump of controlling and be equipped with the device that starts mutually, make this device when an operating water pump trips because of certain reason, control another circulating water pump automatically and be equipped with startup mutually, to guarantee the safety and economic operation of unit equipment.
The model utility content
The object of the present invention is to provide a kind of automatic control generating plant circulation-water pump to be equipped with the device that starts mutually.
To achieve these goals, the utility model is design like this:
Described control generating plant circulation-water pump is equipped with the device that starts mutually and comprises:
One No. 1 manual halted state detection units of circulating water pump;
One output terminal is serially connected with No. 1 circulating water pump automatic mode state detection unit of a not gate;
One No. 1 circulating water pump starting state detection units;
One output terminal is serially connected with No. 1 circulating water pump operation feedback detection unit of a not gate;
One No. 2 circulating water pump automatic mode state detection unit;
One No. 2 circulating water pump DCS pattern feedback detection units;
One rest-set flip-flop;
The one No. 2 standby start-up control of circulating water pump unit;
Wherein, manual halted state detection unit of described No. 1 circulating water pump and described output terminal No. 1 circulating water pump automatic mode state detection unit being serially connected with a not gate links to each other with the R input end of described rest-set flip-flop; Described No. 1 circulating water pump starting state detection unit links to each other with the S input end of described rest-set flip-flop; The output terminal of described rest-set flip-flop, described No. 2 circulating water pump automatic mode state detection unit, described No. 2 circulating water pump DCS patterns feedback detection unit and link to each other with the described No. 2 standby start-up control of circulating water pump unit with door by one together at the described No. 1 circulating water pump operation feedback detection unit that output terminal is in series with a not gate.
Preferably, the signal output part of No. 2 standby start-up control of circulating water pump unit in the described device can also be linked to each other with power plant overall situation DCS control system, to No. 2 standby starting state signals of circulating water pump of described overall DCS control system transmission.
By the utility model, can realize that stand by pump can join automatically when the tripping operation in service of separate unit circulating water pump to open, thereby guarantee the Security of unit when guaranteeing the unit economical operation.
Description of drawings
Fig. 1 is that control generating plant circulation-water pump described in the utility model is equipped with the system structure of device schematic representation that starts mutually.
Embodiment
As shown in Figure 1, being equipped with the device that starts mutually according to control generating plant circulation-water pump of the present utility model comprises: the manual halted state detection unit 1 of No. 1 circulating water pump, whether this detection unit 1 can detect No. 1 circulating water pump and receive manually and cease and desist order, if receive then this detection unit 1 is output as " 1 ", otherwise be " 0 "; An output terminal is serially connected with No. 1 circulating water pump automatic mode state detection unit 2 of a not gate 7, this detection unit 2 can detect No. 1 circulating water pump and whether be set to automatic mode, the output of this detection unit 2 is " 0 " through described not gate 7 backs if No. 1 circulating water pump is set to automatic mode, otherwise is " 1 "; No. 1 a circulating water pump starting state detection unit 3, this detection unit 3 can detect No. 1 circulating water pump and whether receive startup command, if No. 1 circulating water pump has received startup command, then this detection unit 3 is output as " 1 ", otherwise is " 0 "; An output terminal is serially connected with No. 1 circulating water pump operation feedback detection unit 4 of a not gate 8, this detection unit 4 can detect the operation feedback signal from No. 1 circulating water pump, whether this feedback signal is representing No. 1 circulating water pump in normal operation, the output value of this detection unit 4 is being " 0 " through not gate 8 backs if circulating water pump normally moves, otherwise is " 1 "; No. 2 circulating water pump automatic mode state detection unit 5, this detection unit 5 can detect No. 2 circulating water pump and whether be set to automatic mode, this detection unit 5 is output as " 1 " if No. 2 circulating water pump are set to automatic mode, otherwise is " 0 "; No. 2 a circulating water pump DCS patterns feedback detection unit 6, this detection unit 6 can detect No. 2 circulating water pump and whether be set to accept the control of DCS system, if No. 2 circulating water pump are set to accept the control of DCS system then this detection unit 6 is output as " 1 ", otherwise are " 0 "; A rest-set flip-flop 9, this trigger is used to remember the operations staff or whether the DCS control system once sent startup command and No. 2 standby start-up control of circulating water pump unit 11 to No. 1 circulating water pump, and this control unit 11 can be controlled No. 2 circulating water pump and start automatically.
Wherein, manual halted state detection unit 1 of described No. 1 circulating water pump and described output terminal No. 1 circulating water pump automatic mode state detection unit 2 being serially connected with a not gate 7 links to each other with the R input end of described rest-set flip-flop 9; Described No. 1 circulating water pump starting state detection unit 3 links to each other with the S input end of described rest-set flip-flop 9; The output terminal of described rest-set flip-flop, described No. 2 circulating water pump automatic mode state detection unit 5, described No. 2 circulating water pump DCS patterns feedback detection unit 6 and link to each other with the described No. 2 standby start-up control of circulating water pump unit 11 with door 10 by one together at the described No. 1 circulating water pump operation feedback detection unit 4 that output terminal is in series with a not gate 8.
In power plant's generating electricity in winter process, in case operations staff or DCS control system have been sent startup command to No. 1 circulating water pump, described No. 1 circulating water pump starting state detection unit 1 will detect above-mentioned situation, the S input end of connected described rest-set flip-flop 9 is changed to " 1 ", makes rest-set flip-flop 9 memories descend above-mentioned start-up operation at No. 1 circulating water pump.At this moment, if No. 1 circulating water pump normally starts operation, then described No. 1 circulating water pump operation feedback detection unit 4 is output as " 1 ", this output signal is through in the described No. 2 standby start-up control of the circulating water pump unit 11 of input, not gate 8 back, promptly make the input signal of No. 2 circulating water pump 11 remain " 0 ", control No. 2 circulating water pump and do not start.
Be in operation because certain former thereby tripping operation the time when No. 1 circulating water pump subsequently, described No. 1 circulating water pump operation feedback detection unit 4 can't detect the operation feedback signal from No. 1 circulating water pump, then the output of this detection unit 4 is being through becoming " 1 " behind the not gate 8, and with this signal send to the described No. 2 standby start-up control of circulating water pump unit 11 that link to each other with door 10.At this moment, if No. 2 circulating water pump is set to automatic mode and accepts the control of DCS system, then described No. 2 circulating water pump automatic mode state detection unit 5 are output as " 1 ", and the output of described No. 2 circulating water pump DCS patterns feedback detection unit 6 also is " 1 ".Because the S of rest-set flip-flop 9 end is changed to " 1 ", then the output of rest-set flip-flop 9 also be " 1 ", above-mentioned 4 tunnel output signals pass through with behind the door output still be 1.The described No. 2 standby start-up control of circulating water pump unit 11 judge that for " 1 " should start No. 2 circulating water pump immediately takes over No. 1 circulating water pump work according to this input signal values, thereby the mutual received shipment of having realized two circulating water pump is capable, has improved unit safety.
If the staff wishes that two water pumps shut down together; then need to send manually and cease and desist order to No. 1 circulating water pump; the manual halted state detection unit of described No. 1 circulating water pump detects 1 and ceases and desist order manually to this that then it is output as 1; simultaneously described No. 1 circulating water pump automatic mode state detection unit 2 detect No. 1 circulating water pump be not set to automatic mode then its output become " 1 " through behind not gate 7; the R input end that above-mentioned two paths of signals is together imported described rest-set flip-flop 9 is changed to 1 with described R input end; thereby rest-set flip-flop 9 is resetted, make its output signal value be " 0 ".This signal value is through importing the described No. 2 standby start-up control of circulating water pump unit 11 with door 10 backs; these No. 2 standby start-up control of circulating water pump unit 11 are according to " 0 " signal of input; judge that do not need to start No. 2 circulating water pump takes over No. 1 circulating water pump work, thereby realized that two circulating water pump shut down simultaneously.
Preferably, the signal output part of No. 2 standby start-up control of circulating water pump unit 11 in the described device can also be linked to each other with power plant overall situation DCS control system, to No. 2 standby starting state signals of circulating water pump of described overall DCS control system transmission.
By the utility model; can realize that stand by pump can join automatically when the tripping operation in service of separate unit circulating water pump and open; thereby guaranteed the Security of unit when guaranteeing the unit economical operation, and can realize smoothly that the operations staff can control two circulating water pump and promptly quit work simultaneously when the needs unit outage.
Claims (2)
1. control the device that the generating plant circulation-water pump is equipped with startup mutually for one kind, it is characterized in that described device comprises:
One No. 1 manual halted state detection units of circulating water pump;
One output terminal is serially connected with No. 1 circulating water pump automatic mode state detection unit of a not gate;
One No. 1 circulating water pump starting state detection units;
One output terminal is serially connected with No. 1 circulating water pump operation feedback detection unit of a not gate;
One No. 2 circulating water pump automatic mode state detection unit;
One No. 2 circulating water pump DCS pattern feedback detection units;
One rest-set flip-flop;
The one No. 2 standby start-up control of circulating water pump unit;
Wherein, manual halted state detection unit of described No. 1 circulating water pump and described output terminal No. 1 circulating water pump automatic mode state detection unit being serially connected with a not gate links to each other with the R input end of described rest-set flip-flop; Described No. 1 circulating water pump starting state detection unit links to each other with the S input end of described rest-set flip-flop; The output terminal of described rest-set flip-flop, described No. 2 circulating water pump automatic mode state detection unit, described No. 2 circulating water pump DCS patterns feedback detection unit and link to each other with the described No. 2 standby start-up control of circulating water pump unit with door by one together at the described No. 1 circulating water pump operation feedback detection unit that output terminal is in series with a not gate.
2. control generating plant circulation-water pump according to claim 1 is equipped with the device that starts mutually, it is characterized in that, the signal output part of the described No. 2 standby start-up control of circulating water pump unit and power plant overall situation DCS control system links to each other, to No. 2 standby starting state signals of circulating water pump of described overall DCS control system transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520144408 CN2876385Y (en) | 2005-12-14 | 2005-12-14 | Device for controlling power generating plant circulation water pump starting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520144408 CN2876385Y (en) | 2005-12-14 | 2005-12-14 | Device for controlling power generating plant circulation water pump starting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2876385Y true CN2876385Y (en) | 2007-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520144408 Expired - Lifetime CN2876385Y (en) | 2005-12-14 | 2005-12-14 | Device for controlling power generating plant circulation water pump starting |
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| CN (1) | CN2876385Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871467A (en) * | 2010-07-06 | 2010-10-27 | 中冶长天国际工程有限责任公司 | Combustion fan control system for sintering ignition furnace |
| CN103352837A (en) * | 2013-07-05 | 2013-10-16 | 中石化宁波工程有限公司 | Stand-by pump automatically-starting control logic device with two pumps mutually serving as stand-by pumps |
| CN105840473A (en) * | 2016-04-18 | 2016-08-10 | 中国神华能源股份有限公司 | Energy-saving and safe operation method of condensing pumps under low load of generator set |
| CN106704212A (en) * | 2016-12-29 | 2017-05-24 | 中国能源建设集团华北电力试验研究院有限公司 | Undisturbed switching control method for standby pump of electrically-driven feed pumps |
-
2005
- 2005-12-14 CN CN 200520144408 patent/CN2876385Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871467A (en) * | 2010-07-06 | 2010-10-27 | 中冶长天国际工程有限责任公司 | Combustion fan control system for sintering ignition furnace |
| CN101871467B (en) * | 2010-07-06 | 2012-08-01 | 中冶长天国际工程有限责任公司 | Combustion fan control system for sintering ignition furnace |
| CN103352837A (en) * | 2013-07-05 | 2013-10-16 | 中石化宁波工程有限公司 | Stand-by pump automatically-starting control logic device with two pumps mutually serving as stand-by pumps |
| CN103352837B (en) * | 2013-07-05 | 2015-10-28 | 中石化宁波工程有限公司 | Two pumps are for subsequent use each other and automatically start the logic control circuit of stand by pump |
| CN105840473A (en) * | 2016-04-18 | 2016-08-10 | 中国神华能源股份有限公司 | Energy-saving and safe operation method of condensing pumps under low load of generator set |
| CN106704212A (en) * | 2016-12-29 | 2017-05-24 | 中国能源建设集团华北电力试验研究院有限公司 | Undisturbed switching control method for standby pump of electrically-driven feed pumps |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070307 |
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| EXPY | Termination of patent right or utility model |