CN109307258A - A kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method - Google Patents
A kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method Download PDFInfo
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- CN109307258A CN109307258A CN201811016642.5A CN201811016642A CN109307258A CN 109307258 A CN109307258 A CN 109307258A CN 201811016642 A CN201811016642 A CN 201811016642A CN 109307258 A CN109307258 A CN 109307258A
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- flow
- feedwater flow
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- feedwater
- water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/325—Schematic arrangements or control devices therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment methods, belong to high-pressure heater technical field, comprising steps of 1) adding the feedwater flow of water inlet to measure in #3 high, measure height and add a mouthful feedwater flow；2) add the water flow of water outlet to measure in #1 high, measure high plus outlet feedwater flow；3) by judging that height adds mouthful feedwater flow and high plus outlet feedwater flow compares, it can promptly and accurately judge that height adds whether to leak, if it is identical with the outlet Gao Jia feedwater flow that height adds mouthful feedwater flow, it can determine whether not leak, if height, which adds mouthful feedwater flow, is greater than high plus outlet feedwater flow, it then can determine whether to be leaked, it is poor that present invention combination height adds rate of discharge, assist HP heater drainage pitch aperture, it can judge high in first time plus whether leak, have the advantages that method is simple, be easily achieved.
Description
Technical field
The present invention relates to high-pressure heater technical fields, are heated at high temperature more particularly to a kind of overcritical heat supply thermal power plant
Device leak judgment method.
Background technique
High-pressure heater is to be evacuated the device heated to water supply using the part of steam turbine.The device is by shell and pipe
It is two large divisions's composition, steam condensation section is set on housing cavity top, hydrophobic cooling section, inlet tube and outlet tube top is arranged in lower part
Feed-water inlet and feedwater outlet are set.The water supply in the main screwed pipe in top can be added after superheated steam enters shell by import
Heat, steam condensation is after water, lower part can be dredged the heating of the part water supply in cold screwed pipe, the condensation after being utilized by the hot water of condensation again
Water flows out external through hydrophobic outlet.The present apparatus has that low energy consumption, and compact-sized, area occupied is few, consume material save etc. it is significant excellent
Point, and can be compared with the hydrophobic water level of strict control, hydrophobic flow velocity and diminution drain approach.
High-pressure heater connects the contact(-type) heater of the heating water supply after high pressure water pump, for improving to water temperature
Degree, increases economic efficiency.When high-pressure heater leaks, superheated steam will inject directly to Gao Jiashui side pipe by leak source
Section, not only causes heater efficiency to reduce, and since the steam flush of leakage position acts on when serious, will lead to the inside of large area
Pipeline is impaired, causes equipment fault, influences economic benefit.
Summary of the invention
The purpose of the present invention is to provide a kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment methods.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of overcritical heat supply thermal power plant high temperature heater (HTH)
Leak judgment method, it is characterised in that: comprising steps of
1) add the feedwater flow of water inlet to measure in #3 high, measure height and add a mouthful feedwater flow；
2) add the water flow of water outlet to measure in #1 high, measure high plus outlet feedwater flow；
It 3), can promptly and accurately by judging that height adds mouthful feedwater flow and high plus outlet feedwater flow compares
Judge height plus whether leak, if height adds mouthful feedwater flow and the outlet Gao Jia feedwater flow is identical, that is, can determine whether not occur
Leakage can determine whether to be leaked if height adds mouthful feedwater flow and is greater than high plus outlet feedwater flow.
Further, the height is added mouthful feedwater flow and is added again equal to pump intake feedwater flow plus A heat pump inlet flow rate
Upper B heat pump inlet flow rate subtracts reheater attemperation water flow again.
Further, the pump intake feedwater flow is the feedwater flow of fore pump, and the A heat pump inlet flow rate is preposition
The feedwater flow of A is pumped, the B heat pump inlet flow rate is the feedwater flow of fore pump B, and the reheater attemperation water flow is boiler
The flow of reheating desuperheating water.
Further, described high plus outlet feedwater flow is equal to economizer inlet flow rate and adds again plus furnace Xun pump supercooling water
Upper superheater I and II attemperation water flow subtracts furnace Xun pump circulation flow again.
Further, the economizer inlet flow rate is the water flow of economizer entrance, and the furnace Xun pump supercooling water is
The water flow of furnace Xun pump, the superheater I and II attemperation water flow are the attemperation water flow of superheater one, two, the furnace
Xun pump circulation flow is the circular flow of furnace Xun pump.
The beneficial effects of the present invention are:
(1) present invention has the advantages that simple structure and reasonable design；
(2) overcritical high parameter big flow takes out solidifying thermal power plant unit since external heating load is big, and water flow processed is big, and initial stage occurs
Not noticeable when height plus leakage, operations staff often waits until that extensive leakage occurs for high-pressure heater, and HP heater drainage valve opening is bright
Quarantine measures are just taken after aobvious increase.Due to handling not in time, high plus leakage is easily caused to wash away, cause the accident expansion, even
Lead to turbine water induction, seriously threatens the safe operation of steam turbine.It is poor that present invention combination height adds rate of discharge, and auxiliary is high plus dredges
Water pitch aperture, help is run and professional technician judges high plus leakage at the first time, to carry out corresponding position at the first time
Reason.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that height of the invention adds mouthful feedwater flow；
Fig. 2 is the structural schematic diagram that height of the invention adds outlet feedwater flow.
Wherein: 1- fore pump；2- fore pump A；3- fore pump B；4- pump intake feedwater flow；5-A heat pump inlet flow rate；6-
B heat pump inlet flow rate；7- reheater attemperation water flow；8- economizer；9- economizer inlet flow rate；10- furnace Xun pump supercooling water；
11- superheater I and II attemperation water flow；12- furnace Xun pump circulation flow.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1, Fig. 1 are that height of the invention adds a mouthful feedwater flow structural schematic diagram；Fig. 2 is that height of the invention adds outlet
The structural schematic diagram of feedwater flow.
Fig. 2 shows the structural block diagrams of embodiment according to the present invention by Fig. 1-, it can be seen from the figure that a kind of overcritical confession
Showing tremendous enthusiasm power plant's high temperature heater (HTH) leak judgment method, comprising steps of
1) add the feedwater flow of water inlet to measure in #3 high, measure height and add a mouthful feedwater flow；
2) add the water flow of water outlet to measure in #1 high, measure high plus outlet feedwater flow；
It 3), can promptly and accurately by judging that height adds mouthful feedwater flow and high plus outlet feedwater flow compares
Judge height plus whether leak, if height adds mouthful feedwater flow and the outlet Gao Jia feedwater flow is identical, that is, can determine whether not occur
Leakage can determine whether to be leaked if height adds mouthful feedwater flow and is greater than high plus outlet feedwater flow.
The height adds mouthful feedwater flow and adds B heat pump plus A heat pump inlet flow rate 5 equal to pump intake feedwater flow 4
Inlet flow rate 6 subtracts reheater attemperation water flow 7 again.
The pump intake feedwater flow 4 is the feedwater flow of fore pump 1, and the A heat pump inlet flow rate 5 is fore pump A2's
Feedwater flow, the B heat pump inlet flow rate 6 be fore pump B3 feedwater flow, the reheater attemperation water flow 7 be boiler again
The flow of hot desuperheating water.
Described high plus outlet feedwater flow is equal to economizer inlet flow rate 9 plus furnace Xun pump supercooling water 10 along with overheat
Device I and II attemperation water flow 11 subtracts furnace Xun pump circulation flow 12 again.
The economizer inlet flow rate 9 is the water flow of 8 entrance of economizer, and the furnace Xun pump supercooling water 10 is furnace Xun pump
Water flow, the superheater I and II attemperation water flow 11 is the attemperation water flow of superheater one, two, furnace Xun pump
Circular flow 12 is the circular flow of furnace Xun pump.
The above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to preferred embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that, it can modify to technical solution of the present invention
Or equivalent replacement should all cover without departing from the objective and range of technical solution of the present invention in claim of the invention
In range.Technology not described in detail in the present invention, shape, construction portion are well-known technique.
Claims (5)
1. a kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method, it is characterised in that: comprising steps of
1) add the feedwater flow of water inlet to measure in #3 high, measure height and add a mouthful feedwater flow；
2) add the water flow of water outlet to measure in #1 high, measure high plus outlet feedwater flow；
It 3), can judgement promptly and accurately by judging that height adds mouthful feedwater flow and high plus outlet feedwater flow compares
Height adds whether leak, if height adds mouthful feedwater flow and the outlet Gao Jia feedwater flow is identical, that is, can determine whether not leak,
If height, which adds mouthful feedwater flow, is greater than high plus outlet feedwater flow, can determine whether to be leaked.
2. a kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method according to claim 1, feature exist
In: the height adds mouthful feedwater flow and adds A heat pump inlet flow rate (5) along with B heat pump enters equal to pump intake feedwater flow (4)
Mouth flow (6) subtracts reheater attemperation water flow (7) again.
3. a kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method according to claim 2, feature exist
In: the pump intake feedwater flow (4) is the feedwater flow of fore pump (1), and the A heat pump inlet flow rate (5) is fore pump A
(2) feedwater flow, the B heat pump inlet flow rate (6) are the feedwater flow of fore pump B (3), the reheater attemperation water flow
It (7) is the flow of boiler reheating desuperheating water.
4. a kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method according to claim 1, feature exist
In: described high plus outlet feedwater flow is equal to economizer inlet flow rate (9) plus furnace Xun pump supercooling water (10) along with overheat
Device I and II attemperation water flow (11) subtracts furnace Xun pump circulation flow (12) again.
5. a kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method according to claim 4, feature exist
In: the economizer inlet flow rate (9) is the water flow of economizer (8) entrance, and furnace Xun pump supercooling water (10) is furnace Xun
The water flow of pump, the superheater I and II attemperation water flow (11) are the attemperation water flow of superheater one, two, the furnace
Xun pump circulation flow (12) is the circular flow of furnace Xun pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811016642.5A CN109307258A (en) | 2018-09-03 | 2018-09-03 | A kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811016642.5A CN109307258A (en) | 2018-09-03 | 2018-09-03 | A kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method |
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| CN109307258A true CN109307258A (en) | 2019-02-05 |
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| CN201811016642.5A Pending CN109307258A (en) | 2018-09-03 | 2018-09-03 | A kind of overcritical heat supply thermal power plant high temperature heater (HTH) leak judgment method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981892A (en) * | 2020-07-31 | 2020-11-24 | 山东电力研究院 | Method for judging leakage of surface type steam-water heat exchanger |
| CN112257019A (en) * | 2020-10-26 | 2021-01-22 | 山东电力研究院 | Method for calculating large bypass leakage amount of steam turbine water supply with external steam cooler |
| CN113218596A (en) * | 2021-04-29 | 2021-08-06 | 中电华创电力技术研究有限公司 | Leakage detection method and device for #4 low-pressure heater of coal-fired generator set |
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| US20030066638A1 (en) * | 2001-08-13 | 2003-04-10 | Yuzhi Qu | Devices using a medium having a high heat transfer rate |
| CN205260334U (en) * | 2015-12-18 | 2016-05-25 | 广东粤电大埔发电有限公司 | Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler |
| CN206054018U (en) * | 2016-09-14 | 2017-03-29 | 中国神华能源股份有限公司 | A kind of high-pressure heater device and Steam Turbine Regenerative System for steam turbine |
| CN206771316U (en) * | 2017-03-23 | 2017-12-19 | 华电电力科学研究院 | A kind of overcritical or extra-supercritical unit feed pump mounting structure |
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2018
- 2018-09-03 CN CN201811016642.5A patent/CN109307258A/en active Pending
Patent Citations (4)
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| US20030066638A1 (en) * | 2001-08-13 | 2003-04-10 | Yuzhi Qu | Devices using a medium having a high heat transfer rate |
| CN205260334U (en) * | 2015-12-18 | 2016-05-25 | 广东粤电大埔发电有限公司 | Water pump system is given to 100% capacity steam -operating in large unit of power plant boiler |
| CN206054018U (en) * | 2016-09-14 | 2017-03-29 | 中国神华能源股份有限公司 | A kind of high-pressure heater device and Steam Turbine Regenerative System for steam turbine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981892A (en) * | 2020-07-31 | 2020-11-24 | 山东电力研究院 | Method for judging leakage of surface type steam-water heat exchanger |
| CN112257019A (en) * | 2020-10-26 | 2021-01-22 | 山东电力研究院 | Method for calculating large bypass leakage amount of steam turbine water supply with external steam cooler |
| CN112257019B (en) * | 2020-10-26 | 2022-06-07 | 国网山东省电力公司电力科学研究院 | Method for calculating large bypass leakage amount of steam turbine water supply with external steam cooler |
| CN113218596A (en) * | 2021-04-29 | 2021-08-06 | 中电华创电力技术研究有限公司 | Leakage detection method and device for #4 low-pressure heater of coal-fired generator set |
| CN113218596B (en) * | 2021-04-29 | 2023-09-05 | 中电华创电力技术研究有限公司 | Leakage detection method and device for #4 low-pressure heater of coal-fired power generation unit |
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Application publication date: 20190205 |
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