CN103470488A - Pump warming up capacity judging method - Google Patents
Pump warming up capacity judging method Download PDFInfo
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- CN103470488A CN103470488A CN2013104173753A CN201310417375A CN103470488A CN 103470488 A CN103470488 A CN 103470488A CN 2013104173753 A CN2013104173753 A CN 2013104173753A CN 201310417375 A CN201310417375 A CN 201310417375A CN 103470488 A CN103470488 A CN 103470488A
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Abstract
The invention discloses a pump warming up capacity judging method, relates to pump warming up capacity judging technology, and solves huge waste caused by inappropriate pump warming up. By the accurate judgment of a pump warming up line, the most economical openness of a standby pump warming up line, or most economical pump warming up capacity can be achieved through technological modification. The method has the advantages that good energy saving effect on widely-applied high-temperature liquid pump units in industries is achieved; the measuring value is fitted into curves and converted into gradient, so that the method can be applied to independent controllers or control systems of production units, and result transformation is facilitated.
Description
Technical field: the present invention relates to a kind of judgment technology of warming-up amount, especially the determination methods of warming-up amount.
Background technique: along with the increase of domestic unit capacity, the boiler feed water pump startup capable warming-up that advances has become one of most important start-up routine.This is because if before starting, warming-up is insufficient, and the direct heat that after starting, feed water pump will be subject to high-temperature water is impacted, and causes the heat expansion inequality, and the upper and lower temperature difference of the aggravation pump housing makes the pump housing produce that hogback be out of shape, leaks, the interior sound of pump is is partly the worn and torn accident such as seize even.Therefore no matter boiler feed pump is in cold conditions or hot lower startup, before startup, all must carry out warming-up.
For the desalination water pump, start first, during driving, the warming-up time is relatively crucial economic indicator; Having little significance of warming-up amount practical operation, do not consider usually.But the warming-up amount for stand by pump is a parameter of considering for a long time.The warming-up line is always in running order between the stand by pump standby period, the consumption of warming-up amount be material and the energy consumption of working pump.The flow that reduces as far as possible stand by pump warming-up line be we under the long-time running state, control one of energy-saving and cost-reducing index.
Summary of the invention: the object of the present invention is to provide a kind of easy to operately and can effectively reduce the determination methods of the warming-up amount that the stand by pump warming-up consumes, it has solved the improper huge waste of bringing of warming-up.The object of the present invention is achieved like this: in the stand by pump test run stage, at first draw the system of coordinates of warming-up line aperture and pump body temperature relation, distinguish again measures ambient temperature T0, high temperature media temperature T 1, can calculate T2 temperature: T2=T1-40 ℃ (originally go out in basis HGJ207-83 " chemical machine installing engineering construction and acceptance specification " to want pump housing surface and have the temperature difference of the import process pipelines of working medium should be not more than 40 ℃).
Thereby determine linear equation m:T1=100 * KmX+T0; Can obtain Km=(T1-T0) X/100 (0≤X≤100)
With linear equation n:T2=100 * KnX+T0; Can obtain Kn=(T2-T0) X/100 (0≤X≤100), the zone between m, n is exactly the desirable operation area of warming-up pipeline.
Then under the stand by pump dead status, adjust the aperture of warming-up line.Make it respectively 10%, 20%, 30% ... move respectively 3-5 hour for 100% time, measure respectively the temperature t of the pump housing under different opening, intend obtaining the curve of a near linear according to t in Fig. 1, as figure a or b or c.Corresponding formula is:
Ta=KaX+T0, its slope is: Ka=(Ta-T0) X/100
Tb=KbX+T0, its slope is: Kb=(Tb-T0) X/100
Tc=KcX+T0, its slope is: Kc=(Tc-T0) X/100
Can be judged thus:
If 1 slope K > Km, the warming-up line be designed with certain surplus, as figure a line, should note rational operation, misoperation can make the energy consumption waste serious, the excessive reversion of stand by pump impeller, the damage equipment of making of aperture when serious.Now minimum warming-up aperture X1 is: the intersection point of Ta=KaX+T0 and Ta=T0
If 2 slope K m " K " Kn, the design of warming-up line is reasonably, as figure b line, now minimum warming-up aperture X2 is:
The intersection point of Tb=KbX+T0 and Tb=T2
If 3 slope K n " K, the design discharge of warming-up line is too small, can not make within stand by pump is in safe temperature range, very harmful to equipment during startup, should carry out in time technological transformation.
Meaning of the present invention is: by the correct judgement to the warming-up line, we can find the most economical aperture of stand by pump warming-up line, or realize most economical warming-up amount by technical innovation.High-temp liquid pump assembly to industrial extensive use has good energy-saving effect.In addition, measured value is fitted to curve, and the dress way that changes slope into can be directly effectively be applied to the method in the control system of controller independently or production unit, be easy to achievements conversion.
Accompanying drawing explanation: the schematic diagram that Fig. 1 is warming-up amount determination methods
In the stand by pump test run stage, at first draw the system of coordinates of warming-up line aperture and pump body temperature relation, distinguish again measures ambient temperature T0, high temperature media temperature T 1, can calculate T2 temperature: T2=T1-40 ℃ (originally go out in basis HGJ207-83 " chemical machine installing engineering construction and acceptance specification " to want pump housing surface and have the temperature difference of the import process pipelines of working medium should be not more than 40 ℃).
Thereby determine linear equation m:T1=100 * KmX+T0; Can obtain Km=(T1-T0) X/100 (0≤X≤100)
With linear equation n:T2=100 * KnX+T0; Can obtain Kn=(T2-T0) X/100 (0≤X≤100), the zone between m, n is exactly the desirable operation area of warming-up pipeline.
Then under the stand by pump dead status, adjust the aperture of warming-up line.Make it respectively 10%, 20%, 30% ... move respectively 3-5 hour for 100% time, measure respectively the temperature t of the pump housing under different opening, intend obtaining the curve of a near linear according to t in Fig. 1, as figure a or b or c.Corresponding formula is:
Ta=KaX+T0, its slope is: Ka=(Ta-T0) X/100
Tb=KbX+T0, its slope is: Kb=(Tb-T0) X/100
Tc=KcX+T0, its slope is: Kc=(Tc-T0) X/100
Can be judged thus:
If 1 slope K > Km, the warming-up line be designed with certain surplus, as figure a line, should note rational operation, misoperation can make the energy consumption waste serious, the excessive reversion of stand by pump impeller, the damage equipment of making of aperture when serious.Now minimum warming-up aperture X1 is: the intersection point of Ta=KaX+T0 and Ta=T0
If 2 slope K m " K " Kn, the design of warming-up line is reasonably, as figure b line, now minimum warming-up aperture X2 is:
The intersection point of Tb=KbX+T0 and Tb=T2
If 3 slope K n " K, the design discharge of warming-up line is too small, can not make within stand by pump is in safe temperature range, very harmful to equipment during startup, should carry out in time technological transformation.
Claims (1)
1. the determination methods of warming-up amount, it is characterized in that: in the stand by pump test run stage, at first draw the system of coordinates of warming-up line aperture and pump body temperature relation, distinguish again measures ambient temperature T0, high temperature media temperature T 1, can calculate T2 temperature: T2=T1-40 ℃ and originally go out in basis HGJ207-83 " chemical machine installing engineering construction and acceptance specification " to want pump housing surface and have the temperature difference of the import process pipelines of working medium should be not more than 40 ℃;
Thereby determine linear equation m:T1=100 * KmX+T0; Can obtain Km=(T1-T0) X/100 (0≤X≤100)
With linear equation n:T2=100 * KnX+T0; Can obtain Kn=(T2-T0) X/100 (0≤X≤100), the zone between m, n is exactly the desirable operation area of warming-up pipeline; Then under the stand by pump dead status, adjust the aperture of warming-up line; Make it respectively 10%, 20%, 30% ... move respectively 3-5 hour for 100% time, measure respectively the temperature t of the pump housing under different opening, intend obtaining the curve of a near linear according to t in Fig. 1, as figure a or b or c;
Corresponding formula is:
Ta=KaX+T0, its slope is: Ka=(Ta-T0) X/100
Tb=KbX+T0, its slope is: Kb=(Tb-T0) X/100
Tc=KcX+T0, its slope is: Kc=(Tc-T0) X/100
Can be judged thus:
If slope K>Km, the warming-up line be designed with certain surplus, should note rational operation, misoperation can make the energy consumption waste serious, the excessive reversion of stand by pump impeller, the damage equipment of making of aperture when serious;
?now minimum warming-up aperture X1 is: the intersection point of Ta=KaX+T0 and Ta=T0
If slope K m " K " Kn, the design of warming-up line is reasonably, as figure b line, now minimum warming-up aperture X2 is:
The intersection point of Tb=KbX+T0 and Tb=T2
If slope K n " K, the design discharge of warming-up line is too small, can not make within stand by pump is in safe temperature range, very harmful to equipment during startup, should carry out in time technological transformation.
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| CN201310417375.3A CN103470488B (en) | 2013-09-13 | 2013-09-13 | The determination methods of warming-up amount |
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| CN201310417375.3A CN103470488B (en) | 2013-09-13 | 2013-09-13 | The determination methods of warming-up amount |
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| CN103470488A true CN103470488A (en) | 2013-12-25 |
| CN103470488B CN103470488B (en) | 2015-11-18 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675908A (en) * | 1979-11-26 | 1981-06-23 | Hitachi Ltd | Warming up device for steam turbine for driving boiler feed water pump |
| JPS5726304A (en) * | 1980-07-25 | 1982-02-12 | Hitachi Ltd | Warming apparatus for boiler feed water pump |
| EP0071053A2 (en) * | 1981-07-29 | 1983-02-09 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Method of preheating fuel for an internal-combustion engine working with heavy fuel, and fuel system therefor |
| US4423705A (en) * | 1981-03-26 | 1984-01-03 | Toyo Kogyo Co., Ltd. | Cooling system for liquid-cooled internal combustion engines |
| JPS61223406A (en) * | 1985-03-28 | 1986-10-04 | 三菱重工業株式会社 | Method of warming boiler feed pump |
| JPH10300013A (en) * | 1997-04-22 | 1998-11-13 | Mitsubishi Heavy Ind Ltd | Feed water pump warming up method |
| JP2007292348A (en) * | 2006-04-23 | 2007-11-08 | Chugoku Electric Power Co Inc:The | Warming device for water supply pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU646070A1 (en) * | 1974-02-15 | 1979-02-05 | Северо-Западный Заочный Политехнический Институт | Power plant for feeding water to boilers |
-
2013
- 2013-09-13 CN CN201310417375.3A patent/CN103470488B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675908A (en) * | 1979-11-26 | 1981-06-23 | Hitachi Ltd | Warming up device for steam turbine for driving boiler feed water pump |
| JPS5726304A (en) * | 1980-07-25 | 1982-02-12 | Hitachi Ltd | Warming apparatus for boiler feed water pump |
| US4423705A (en) * | 1981-03-26 | 1984-01-03 | Toyo Kogyo Co., Ltd. | Cooling system for liquid-cooled internal combustion engines |
| EP0071053A2 (en) * | 1981-07-29 | 1983-02-09 | Klöckner-Humboldt-Deutz Aktiengesellschaft | Method of preheating fuel for an internal-combustion engine working with heavy fuel, and fuel system therefor |
| JPS61223406A (en) * | 1985-03-28 | 1986-10-04 | 三菱重工業株式会社 | Method of warming boiler feed pump |
| JPH10300013A (en) * | 1997-04-22 | 1998-11-13 | Mitsubishi Heavy Ind Ltd | Feed water pump warming up method |
| JP2007292348A (en) * | 2006-04-23 | 2007-11-08 | Chugoku Electric Power Co Inc:The | Warming device for water supply pump |
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| CN103470488B (en) | 2015-11-18 |
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Granted publication date: 20151118 Termination date: 20160913 |