CN204127936U - What be applicable to power plant boiler supplies water controlling equipment - Google Patents
What be applicable to power plant boiler supplies water controlling equipment Download PDFInfo
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- CN204127936U CN204127936U CN201420595125.9U CN201420595125U CN204127936U CN 204127936 U CN204127936 U CN 204127936U CN 201420595125 U CN201420595125 U CN 201420595125U CN 204127936 U CN204127936 U CN 204127936U
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Abstract
The utility model relates to a kind of confession water controlling equipment being applicable to power plant boiler, include deaerator storage tank, be characterized in: deaerator storage tank output port is connected with feed pump group, feed pump group is connected with feed main, and this feed pump group has the connected formation of three separate A feed pump assemblies, B feed pump assembly, C feed pump assembly at least.Each feed pump assembly is connected with controller jointly, and feed pump group is connected with has two separate segmentation power supplys at least, and each section of power supply is equipped with independently breaker.Thus, the fluid coupling scoop tube mode of speed regulation of frequency conversion drive is achieved.Effectively can carry out the control allotment of running status, the whole steady running be positioned at for water controlling equipment under different energy consumption can be ensured, realize the lifting of operating efficiency simultaneously from maximum possible, meet energy-conservation low load operation, and ensure safe operation of the boiler.
Description
Technical field
The utility model relates to a kind of confession water controlling equipment, particularly relates to a kind of confession water controlling equipment being applicable to power plant boiler.
Background technology
Just at present, thermal power plant is called for short in thermal power plant, utilize coal, oil, natural gas as the factory of fuel production electric energy, its basic process of production is: fuel in the boiler combustion heating water makes into steam, the converts chemical energy of fuel is become heat energy, and steam pressure pushing turbine rotates, and thermal power transfer becomes mechanical energy, then steam turbine drive electrical generators rotates, and mechanical energy is become electric energy.
Simultaneously; domestic heat power plant boiler feed pump configures steam-operating or electrically driven feed pump usually; feed pump is one of major pant item of power plant production process; wherein electrically driven feed pump can adopt fluid coupling as speed setting unit usually, and general electrically driven feed pump power consumption accounts for the station service of 2.5%-3%.But fluid coupling belongs to slip loss type arrangements for speed regulation, in the process of speed governing, slip power in oil, adds additional energy consumption with the form loss of heat energy; In addition, owing to amplifying step by step in the allowance of Design and manufacture link feed pump group, cause being operated in inefficient area at underload period feed pump, overall efficiency is relatively low.
Utility model content
The purpose of this utility model is exactly to solve the above-mentioned problems in the prior art, provides a kind of confession water controlling equipment being applicable to power plant boiler.
The purpose of this utility model is achieved through the following technical solutions:
What be applicable to power plant boiler supplies water controlling equipment, include deaerator storage tank, it is characterized in that: described deaerator storage tank output port is connected with feed pump group, described feed pump group is connected with feed main, described feed pump group has three separate A feed pump assemblies at least, B feed pump assembly, C feed pump assembly is connected and forms, described A feed pump assembly, B feed pump assembly, C feed pump assembly is connected with controller jointly, described feed pump group is connected with and has two separate segmentation power supplys at least, comprise A section power supply, B section power supply, described A section power supply, B section power supply is equipped with independently breaker, described A feed pump assembly, include A feed pump body, described A feed pump body input is connected with preposition input unit, described A feed pump body output is provided with outlet portal, described outlet portal is connected with boiler and is connected port, the control port of described A feed pump body is connected with drive unit, described B feed pump assembly, include B feed pump body, described B feed pump body input is connected with preposition input unit, described B feed pump body output is provided with outlet portal, described outlet portal is connected with boiler and is connected port, the control port of described B feed pump body is connected with drive unit, described C feed pump assembly, include C feed pump body, described C feed pump body input is connected with preposition input unit, described C feed pump body output is provided with outlet portal, described outlet portal is connected with boiler and is connected port, the control port of described C feed pump body is connected with drive unit.
Further, the above-mentioned confession water controlling equipment being applicable to power plant boiler, wherein: described preposition input unit includes entrance door, described entrance door is connected with fore pump motor, the output of described entrance door connects the input of fore pump body, and the output of described fore pump body connects to the feed pump body input of correspondence.
Further; the above-mentioned confession water controlling equipment being applicable to power plant boiler; wherein: described drive unit includes speed changer; the driving port of described speed changer is connected with water supply pump motor; described water supply pump motor is also provided with frequency converter, and the input port of described frequency converter connects energy supply port by protection assembly.
Further, the above-mentioned confession water controlling equipment being applicable to power plant boiler, wherein: described protection assembly is breaker.
Again further, the above-mentioned confession water controlling equipment being applicable to power plant boiler, wherein: described A feed pump body, B feed pump body, C feed pump body are multistage centrifugal water pump.
The advantage of technical solutions of the utility model is mainly reflected in: the control allotment effectively can carrying out running status, the whole steady running be positioned at for water controlling equipment under different energy consumption can be ensured, the lifting of operating efficiency is realized simultaneously from maximum possible, meet energy-conservation low load operation, and ensure safe operation of the boiler.In other words, achieve and transform the fluid coupling scoop tube mode of speed regulation of feed pump as frequency conversion drive mode, change motor speed by frequency converter and realize speed of feedwater adjustment.Control logic optimization be by the frequency conversion/power frequency mixing two of innovation drag three logic realization, two variable frequency pump groups run a general pump for subsequent use time rob that separate unit variable frequency pump between water function and low-load period runs rob water function.
The purpose of this utility model, advantage and disadvantage, by for illustration and explanation for the non-limitative illustration passing through preferred embodiment below.
Accompanying drawing explanation
Fig. 1 is the unitary construction schematic diagram of this confession water controlling equipment.
Detailed description of the invention
What be applicable to power plant boiler supplies water controlling equipment, and include deaerator storage tank, its special feature is: the deaerator storage tank output port that the utility model adopts is connected with feed pump group, and this feed pump group is connected with feed main.Consider in real-world operation and effectively can reduce energy resource consumption, realize the mutual allotment of optimum condition, meet different feedwater needs, feed pump group has the connected formation of three separate A feed pump assemblies, B feed pump assembly, C feed pump assembly at least.Meanwhile, consider that the allotment agreeing to manipulation is convenient, A feed pump assembly, B feed pump assembly, C feed pump assembly are connected with controller jointly.Further, feed pump group is connected with and has two separate segmentation power supplys at least, comprise A section power supply, B section power supply, A section power supply, B section power supply are equipped with independently breaker, meet the needs controlling to switch.
Specifically, consider each water pump component co-ordination needs each other, and meet the needs of boiler connection, the A feed pump assembly of employing, includes A feed pump body.This A feed pump body input is connected with preposition input unit.Meanwhile, A feed pump body output is provided with outlet portal, outlet portal is connected with boiler and is connected port, the control port of A feed pump body is connected with drive unit.Corresponding with it, the B feed pump assembly of employing, also includes B feed pump body, and this B feed pump body input is connected with preposition input unit.Same, B feed pump body output is provided with outlet portal, outlet portal is connected with boiler and is connected port, the control port of B feed pump body is connected with drive unit.And, the C feed pump assembly that the utility model adopts, it includes C feed pump body, this C feed pump body input is connected with preposition input unit, described C feed pump body output is provided with outlet portal, described outlet portal is connected with boiler and is connected port, the control port of described C feed pump body is connected with drive unit.
With regard to the utility model one preferably embodiment, control to carry out effective preposition intervention, the preposition input unit of employing includes entrance door, this entrance door is connected with fore pump motor.Meanwhile, connect the input of fore pump body at the output of entrance door, and the output of fore pump body connects to the feed pump body input of correspondence.
Further, in order to carry out quick responsive operation when tripping operation appears in local, the drive unit of employing includes speed changer, and the driving port of this speed changer is connected with water supply pump motor.Meanwhile, water supply pump motor is also provided with frequency converter, the input port of frequency converter connects energy supply port by protection assembly.Further, consider the realization needs that follow-up interlocking is closed, formed protection assembly with breaker and can play preferably result of use.
Moreover effectively can meet the steady operation needs of power plant boiler when considering each pump working, A feed pump body, B feed pump body, C feed pump body are multistage centrifugal water pump, effectively realize variable frequency adjustment.
As shown in Figure 1, in conjunction with practical set, the entrance of A feed pump 21 connects A feed pump fore pump 213, A feed pump fore pump 213 by A feed pump fore pump motor 2131 drive by pipeline.A feed pump fore pump 213 connects A entrance of water-supplying pump door 214 by pipeline, and A entrance of water-supplying pump door 214 connects bottom deaerator storage tank 1 by pipeline; A feed pump 21 is exported and is connected on feed main 3 by A feed pump outlet portal 215.Simultaneously, A feed pump 21 power shaft connects A speed of feedwater converter 212 output shaft by shaft coupling, A speed of feedwater converter 212 power shaft connects A water supply pump motor 211 output shaft by shaft coupling, A water supply pump motor 211 is driven by A feed pump frequency converter 216, and A feed pump frequency converter 216 power supply is connected on A section power supply 218 by A feed pump breaker 217.
Same, the entrance of B feed pump 22 connects B feed pump fore pump 223, B feed pump fore pump 223 by B feed pump fore pump motor 2231 drive by pipeline.B feed pump fore pump 223 is connected B entrance of water-supplying pump door 224, B entrance of water-supplying pump door 224 by pipeline and is connected bottom deaerator storage tank 1 by pipeline.And B feed pump 22 exports and is connected on feed main 3 by B feed pump outlet portal 225; B feed pump 22 power shaft connects B speed of feedwater converter 222 output shaft by shaft coupling, B speed of feedwater converter 222 power shaft connects B water supply pump motor 221 output shaft by shaft coupling, B water supply pump motor 221 is driven by B feed pump frequency converter 226, and B feed pump frequency converter 226 power supply is connected on B section power supply 228 by B feed pump breaker 227.
Corresponding with it, the entrance of the C feed pump 23 of employing connects C feed pump fore pump 233, C feed pump fore pump 233 by C water supply pump motor 231 Driven by Coaxial by pipeline.C feed pump fore pump 223 is connected C entrance of water-supplying pump door 234, C entrance of water-supplying pump door 234 by pipeline and is connected bottom deaerator storage tank 1 by pipeline.Meanwhile, C feed pump 23 is exported and is connected on feed main 3 by C feed pump outlet portal 235.C feed pump 23 power shaft connects C feed pump fluid coupling 232 output shaft by shaft coupling, C speed of feedwater converter 232 power shaft connects C water supply pump motor 231 output shaft by shaft coupling, C water supply pump motor 231 is connected on A section power supply 218 and B section power supply 228 respectively by C feed pump A section breaker 237, C feed pump B section breaker 238.
Meanwhile, A speed of feedwater converter 212 and B speed of feedwater converter 222 are equipment of the same type, and rotating ratio is between 3.2:1 to 5.5:1, bear the rotating speed between water supply pump motor and feed pump and moment transmission.
In conjunction with actual service condition of the present utility model.
Embodiment one
When the power of the assembling unit is greater than 70%, A feed pump 21, B feed pump 22 are in paired running state.Now, the control system being positioned at backstage exports A instruction feed pump frequency converter 216, exports B instruction feed pump frequency converter 226, makes going to regulate speed of feedwater to reach both it and meeting boiler feedwater needs.Meanwhile, C feed pump 23 is in stand-by state, and C entrance of water-supplying pump door 234 is opened, and C feed pump outlet portal 235 outlet portal is closed, and fluid-flywheel clutch scoop tube is in 15% aperture, and A/B dual power supply is all in electriferous state.
After A feed pump group is because of fault trip, C feed pump group A breaker is interlocked closed while Logic judgment.Thus, a-power supply is accessed C pump motor, pump motor Driven by Coaxial fore pump and fluid power coupling apparatus rotate simultaneously.Meanwhile, fluid coupling scoop tube aperture was opened to 105% of A feed pump group frequency converter instruction by 15% in 28 seconds.Along with the increase of fluid coupling scoop tube aperture, C speed of feedwater constantly rises, and outlet pressure also improves constantly.When C feed pump outlet pressure equals feed main pressure, C feed pump outlet portal is opened, and completes and robs water.After B feed pump group is because of fault trip, C feed pump group B breaker is interlocked closed through Logic judgment simultaneously, B-source is accessed C pump motor, and pump motor Driven by Coaxial fore pump and fluid power coupling apparatus rotate simultaneously.Simultaneously, fluid coupling scoop tube aperture was opened to 105% of B feed pump group frequency converter instruction by 15% in 28 seconds, along with the increase of fluid coupling scoop tube aperture, C speed of feedwater constantly rises, outlet pressure also improves constantly, when C feed pump outlet pressure equals feed main pressure, C feed pump outlet portal is opened, and completes and robs water.
Embodiment two
When the power of the assembling unit is less than 70%, when operating personnel select interlocking to stop A feed pump 21, control system reduces the instruction of A feed pump frequency converter 216 by Logic judgment, increases the instruction of B feed pump frequency converter 226 simultaneously and continues to maintain water boiler feedwater requirement amount.
When A feed pump outlet pressure is lower than feed main pressure, A feed pump outlet portal 215 is closed, and interlocking disconnects the power supply of A feed pump breaker 217 and A feed pump fore pump motor 2131 simultaneously, and A feed pump group is out of service.Then, when operating personnel select interlocking to stop B feed pump 22, control system reduces the frequency converter instruction of B feed pump 22 by Logic judgment, increases the instruction of A feed pump frequency converter 216 simultaneously, continues to maintain water boiler feedwater requirement amount.When the outlet pressure of B feed pump 22 is lower than feed main 3 pressure, B feed pump outlet portal is closed, and interlocking disconnects B feed pump breaker 227 and B feed pump fore pump motor power simultaneously, and B feed pump group is out of service.
Embodiment three
When the power of the assembling unit is less than 70%, when operating personnel select interlocking to stop A feed pump 21, B feed pump 22 is in Effec-tive Function district, and the energy consumption that when its energy consumption is less than the identical power of the assembling unit, A/B feed pump group is run simultaneously, achieves energy-saving run.When under this operating mode, B feed pump is because of fault trip, C feed pump group B breaker 238 is interlocked closed through Logic judgment simultaneously, B-source is accessed C water supply pump motor 231, and this pump motor Driven by Coaxial fore pump and fluid power coupling apparatus rotate simultaneously.Simultaneously, fluid coupling scoop tube aperture was opened to 105% of B feed pump frequency converter 226 instruction by 15% in 28 seconds, along with the increase of fluid coupling scoop tube aperture, C feed pump 23 rotating speed constantly rises, outlet pressure also improves constantly, and when C feed pump outlet pressure equals feed main pressure, C feed pump 23 outlet portal is opened, complete and rob water, guarantee safe operation of the boiler.
Embodiment four
When the power of the assembling unit is less than 70%, when operating personnel select interlocking to stop B feed pump 22, A feed pump 21 is in Effec-tive Function district, and the energy consumption that when its energy consumption is less than the identical power of the assembling unit, A/B feed pump group is run simultaneously, achieves energy-saving run.When under this operating mode, when A feed pump 21 is because of fault trip, C feed pump group A breaker is interlocked closed through Logic judgment simultaneously, a-power supply is accessed C water supply pump motor 231, and pump motor Driven by Coaxial fore pump and fluid power coupling apparatus rotate simultaneously.Meanwhile, fluid coupling scoop tube aperture was opened to 105% of B feed pump frequency converter 226 pronunciation instruction by 15% in 28 seconds.Along with the increase of fluid coupling scoop tube aperture, C feed pump 23 rotating speed constantly rises, and outlet pressure also improves constantly, and when the outlet pressure of C feed pump 23 equals feed main pressure, C feed pump outlet portal 235 is opened, and completes and robs water, guarantee safe operation of the boiler.
Can be found out by above-mentioned character express, after adopting the utility model, effectively can carry out the control allotment of running status, the whole steady running be positioned at for water controlling equipment under different energy consumption can be ensured, the lifting of operating efficiency is realized simultaneously from maximum possible, meet energy-conservation low load operation, and ensure safe operation of the boiler.In other words, achieve and transform the fluid coupling scoop tube mode of speed regulation of feed pump as frequency conversion drive mode, change motor speed by frequency converter and realize speed of feedwater adjustment.Control logic optimization be by the frequency conversion/power frequency mixing two of innovation drag three logic realization, two variable frequency pump groups run a general pump for subsequent use time rob that separate unit variable frequency pump between water function and low-load period runs rob water function.Both when the power of the assembling unit is greater than 70%, A, B feed pump group had been in running status, and control system is reached by frequency converter instruction adjustment speed of feedwater and meets boiler feedwater needs, achieves reduction energy consumption simultaneously.When the arbitrary appearance tripping operation of A, B feed pump group, C feed pump, from corresponding power interlocked startup, continues the water supply taking over tripping operation pump group.When the power of the assembling unit is less than 70%, select the arbitrary operation of A/B feed pump group by operating personnel, another stops, and realizes underload energy-conservation.When process pump group trips, C feed pump, from corresponding power interlocked startup, continues the water supply taking over tripping operation pump group.
These embodiments are only the prominent examples of application technical solutions of the utility model, allly take equivalent replacement or equivalent transformation and the technical scheme that formed, all drop within the claimed scope of the utility model.
Claims (5)
1. what be applicable to power plant boiler supplies water controlling equipment, include deaerator storage tank, it is characterized in that: described deaerator storage tank output port is connected with feed pump group, described feed pump group is connected with feed main, described feed pump group has three separate A feed pump assemblies at least, B feed pump assembly, C feed pump assembly is connected and forms, described A feed pump assembly, B feed pump assembly, C feed pump assembly is connected with controller jointly, described feed pump group is connected with and has two separate segmentation power supplys at least, comprise A section power supply, B section power supply, described A section power supply, B section power supply is equipped with independently breaker, described A feed pump assembly, include A feed pump body, described A feed pump body input is connected with preposition input unit, described A feed pump body output is provided with outlet portal, described outlet portal is connected with boiler and is connected port, the control port of described A feed pump body is connected with drive unit, described B feed pump assembly, include B feed pump body, described B feed pump body input is connected with preposition input unit, described B feed pump body output is provided with outlet portal, described outlet portal is connected with boiler and is connected port, the control port of described B feed pump body is connected with drive unit, described C feed pump assembly, include C feed pump body, described C feed pump body input is connected with preposition input unit, described C feed pump body output is provided with outlet portal, described outlet portal is connected with boiler and is connected port, the control port of described C feed pump body is connected with drive unit.
2. the confession water controlling equipment being applicable to power plant boiler according to claim 1, it is characterized in that: described preposition input unit includes entrance door, described entrance door is connected with fore pump motor, the output of described entrance door connects the input of fore pump body, and the output of described fore pump body connects to the feed pump body input of correspondence.
3. the confession water controlling equipment being applicable to power plant boiler according to claim 1; it is characterized in that: described drive unit includes speed changer; the driving port of described speed changer is connected with water supply pump motor; described water supply pump motor is also provided with frequency converter, and the input port of described frequency converter connects energy supply port by protection assembly.
4. the confession water controlling equipment being applicable to power plant boiler according to claim 3, is characterized in that: described protection assembly is breaker.
5. the confession water controlling equipment being applicable to power plant boiler according to claim 1, is characterized in that: described A feed pump body, B feed pump body, C feed pump body are multistage centrifugal water pump.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420595125.9U CN204127936U (en) | 2014-10-15 | 2014-10-15 | What be applicable to power plant boiler supplies water controlling equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420595125.9U CN204127936U (en) | 2014-10-15 | 2014-10-15 | What be applicable to power plant boiler supplies water controlling equipment |
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| CN204127936U true CN204127936U (en) | 2015-01-28 |
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| CN201420595125.9U Expired - Fee Related CN204127936U (en) | 2014-10-15 | 2014-10-15 | What be applicable to power plant boiler supplies water controlling equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383055A (en) * | 2016-08-29 | 2017-02-08 | 中国十七冶集团有限公司 | Pressure testing method of ultra-large type steel-making exhaust-heat boiler softening water supply pipeline |
| CN107740761A (en) * | 2017-10-17 | 2018-02-27 | 通辽霍林河坑口发电有限责任公司 | Feed water method for controlling pump and water supply system |
| CN112420232A (en) * | 2020-11-18 | 2021-02-26 | 华能山东石岛湾核电有限公司 | Two return circuits water supply system of high temperature gas cooled reactor nuclear power plant |
| CN114646051A (en) * | 2022-03-17 | 2022-06-21 | 国网湖南省电力有限公司 | Automatic control method and system for water supply of wet-state operation boiler of supercritical thermal power generating unit |
-
2014
- 2014-10-15 CN CN201420595125.9U patent/CN204127936U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383055A (en) * | 2016-08-29 | 2017-02-08 | 中国十七冶集团有限公司 | Pressure testing method of ultra-large type steel-making exhaust-heat boiler softening water supply pipeline |
| CN107740761A (en) * | 2017-10-17 | 2018-02-27 | 通辽霍林河坑口发电有限责任公司 | Feed water method for controlling pump and water supply system |
| CN112420232A (en) * | 2020-11-18 | 2021-02-26 | 华能山东石岛湾核电有限公司 | Two return circuits water supply system of high temperature gas cooled reactor nuclear power plant |
| CN112420232B (en) * | 2020-11-18 | 2022-07-15 | 华能山东石岛湾核电有限公司 | Two-loop water supply system of high-temperature gas cooled reactor nuclear power plant |
| CN114646051A (en) * | 2022-03-17 | 2022-06-21 | 国网湖南省电力有限公司 | Automatic control method and system for water supply of wet-state operation boiler of supercritical thermal power generating unit |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20171015 |