CN202690402U - Control device for water feeding pump of thermal power plant - Google Patents
Control device for water feeding pump of thermal power plant Download PDFInfo
- Publication number
- CN202690402U CN202690402U CN 201220368984 CN201220368984U CN202690402U CN 202690402 U CN202690402 U CN 202690402U CN 201220368984 CN201220368984 CN 201220368984 CN 201220368984 U CN201220368984 U CN 201220368984U CN 202690402 U CN202690402 U CN 202690402U
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- feeding pump
- water feeding
- control device
- water pump
- utility
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Abstract
The utility model provides a control device for a water feeding pump of a thermal power plant. The control device comprises a pneumatic water feeding pump, an electric water feeding pump and a control module, wherein the control module is connected with the pneumatic water feeding pump and the electric water feeding pump and is used for logically modifying the water feeding pump RB to the pneumatic water feeding pump and tripping and then connecting the electric water feeding pump within 5 seconds; if the electric water feeding pump is connected, the water feeding pump RB is not generated; and if the electric water feeding pump is not connected, the water feeding pump RB is generated. Under the action of the control module of the control device provided by the utility model, the electric water feeding pump is connected within 5 seconds after the pneumatic water feeding pump is tripped, so that the accidents, such as steam pocket water level boiler MFT, and the like, can be effectively prevented and avoided.
Description
Technical field
The utility model relates to a kind of control device for water feed pumps, relates in particular to a kind of for the thermal power plant feed water pump fast cutback thermal power plant control device for water feed pumps of (RUNBACK is called for short RB).
Background technique
The RB function refers to that the Important Auxiliary equipment of unit occurs under unusual and the failure condition, and load instruction and fuel quantity rapid response continue safe operation to guarantee unit.The RB function of coal fired power generation unit is by burner management system (Furnace Safety Supervision System, be called for short FSSS, be also referred to as burner management system, Burner Management System, be called for short BMS) and two systems of coordinated control system (Coordination Control System, abbreviation CCS) jointly realize.The equipment that the coordinated control system basis breaks down is determined the target load of unit, carries out the switching of coordinated control mode, and sends the RB instruction to the FSSS system, and the coal pulverizer logical process is excised according to the RB instruction that receives by the FSSS system.
See that from the electrically driven feedpump start up curve electrically driven feedpump throwing the on-load of just fetching water within 13 seconds of interlock successfully afterwards for subsequent use, the electrically driven feedpump design load can be with 50% unit load, operator control in time can escape the low boiler main burning of steam water-level tripping operation (Main Fuel Trip, be called for short MFT), if when high load, behind the pneumatic Feed Pump Trip during electrically driven feedpump chain start generation feed water pump RB, because the in succession tripping operation of two coal pulverizers in boiler upper strata, combustion system coal amount will produce very large fluctuation, send the induced draught fan baffle plate because coordinative role in succession turns down and keeps combustion chamber draft, the reducing rapidly of unit load makes the Water Level Control of Steam very difficult, if the operations staff adjusts untimely, the situation of the consequence that produces when feed water pump RB does not occur is more serious, very easily causes boiler MFT steam water-level Senior Three value chaser.
The model utility content
The purpose of this utility model is to provide a kind of thermal power plant control device for water feed pumps, is used for solving the problem that may cause the accidents such as boiler MFT that prior art exists.
In order to address the above problem, the thermal power plant control device for water feed pumps that the utility model provides comprises pneumatic feed water pump and electrically driven feedpump, wherein, also comprise: control module is connected with described pneumatic feed water pump, described electrically driven feedpump, after feed water pump RB logic Modification is a described pneumatic Feed Pump Trip, described electrically driven feedpump should join in 5 seconds, and as joining, feed water pump RB does not occur, as not joined, feed water pump RB occurs.
The utility model is by providing a control module, can make behind the pneumatic Feed Pump Trip that electrically driven feedpump joins in 5 seconds, can effectively prevent and avoid steam water-level boiler MFT.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the utility model embodiment's theory structure schematic representation.
Embodiment
Below in conjunction with accompanying drawing of the present utility model, the technical solution of the utility model is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model embodiment comprises control module 1, pneumatic feed water pump 2 and electrically driven feedpump 3.Control module 1 is connected with pneumatic feed water pump 2, electrically driven feedpump 3, and being used for feed water pump RB logic Modification is after a pneumatic feed water pump 2 trips, and electrically driven feedpump 3 should join in 5 seconds, and as joining, feed water pump RB does not occur, as not joined, feed water pump RB occurs.
During implementation, the design control logic is that BI01 is pneumatic Feed Pump Trip 3MCS1D:MCIN36116.CIN-5 in control module 1; BI10 changes 3CORP:CORPRBCAL2.BO05 into by original connection 3CORP:CORPRBCAL2.BO07 in the 3CORP:CORPCAL3 module;
Be amended as follows in the 3CORP:CORPRBCAL2 module, wherein:
BI03-3MCS1D:MCIN36116.CIN-6 is the electrically driven feedpump tripping operation, and is constant;
BI04-3MCS1D:MCIN36116.CIN-5 is that pneumatic Feed Pump Trip changes 3CORP:CORPRBQB.BO01 into;
BI05-3MCS1D:MCIN36117.CIN-5 is that pneumatic Feed Pump Trip changes 3CORP:CORPRBQB.BO04 into.
To sum up, the utility model is by being after a steam feed pump trips with feed water pump RB logic Modification, and electrically driven feedpump should join in 5 seconds.As join, feed water pump RB does not occur, as not joined generation feed water pump RB, can effectively prevent and avoid the accidents such as steam water-level boiler MFT.In addition, the utility model also have logic relatively simple, implement difficulty less, can take full advantage of existing equipment, improve the advantages such as operational reliability of power generating equipment.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (1)
1. a thermal power plant control device for water feed pumps comprises pneumatic feed water pump and electrically driven feedpump, it is characterized in that, also comprises:
Control module is connected with described pneumatic feed water pump, described electrically driven feedpump, after feed water pump RB logic Modification is a described pneumatic Feed Pump Trip, described electrically driven feedpump should join in 5 seconds, and as joining, feed water pump RB does not occur, as not joined, feed water pump RB occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220368984 CN202690402U (en) | 2012-07-27 | 2012-07-27 | Control device for water feeding pump of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220368984 CN202690402U (en) | 2012-07-27 | 2012-07-27 | Control device for water feeding pump of thermal power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690402U true CN202690402U (en) | 2013-01-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220368984 Expired - Fee Related CN202690402U (en) | 2012-07-27 | 2012-07-27 | Control device for water feeding pump of thermal power plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN202690402U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214760A (en) * | 2014-08-26 | 2014-12-17 | 福建省鸿山热电有限责任公司 | Control method for 600MW supercritical extraction condensing generating heat supply unit to realize no heat supply cutoff through combined starting of electric pump after single steam pump trips out |
| CN105508231A (en) * | 2016-02-03 | 2016-04-20 | 华北电力科学研究院有限责任公司 | Control method and system of common electrically-driven feed pump for thermal generator sets |
| CN108132615A (en) * | 2017-12-27 | 2018-06-08 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of logic blocking method of the public electronic feed pump control system of unit |
-
2012
- 2012-07-27 CN CN 201220368984 patent/CN202690402U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214760A (en) * | 2014-08-26 | 2014-12-17 | 福建省鸿山热电有限责任公司 | Control method for 600MW supercritical extraction condensing generating heat supply unit to realize no heat supply cutoff through combined starting of electric pump after single steam pump trips out |
| CN104214760B (en) * | 2014-08-26 | 2015-12-09 | 福建省鸿山热电有限责任公司 | The overcritical condensation power generation thermal power plant unit separate unit heat pump tripping operation electric pump connection of taking out of 600MW opens the control method of not cutting heat supply |
| CN105508231A (en) * | 2016-02-03 | 2016-04-20 | 华北电力科学研究院有限责任公司 | Control method and system of common electrically-driven feed pump for thermal generator sets |
| CN108132615A (en) * | 2017-12-27 | 2018-06-08 | 中国大唐集团科学技术研究院有限公司西北分公司 | A kind of logic blocking method of the public electronic feed pump control system of unit |
| CN108132615B (en) * | 2017-12-27 | 2020-09-18 | 中国大唐集团科学技术研究院有限公司西北分公司 | Logic locking method of unit public electric water supply pump control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20150727 |
|
| EXPY | Termination of patent right or utility model |