CN104990060B - A kind of Steam Cooler System passive resistance protection device - Google Patents
A kind of Steam Cooler System passive resistance protection device Download PDFInfo
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- CN104990060B CN104990060B CN201510444211.9A CN201510444211A CN104990060B CN 104990060 B CN104990060 B CN 104990060B CN 201510444211 A CN201510444211 A CN 201510444211A CN 104990060 B CN104990060 B CN 104990060B
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Abstract
The invention discloses a kind of Steam Cooler System passive resistance protection device, belongs to power plant auxiliary machine field, including forward type steam condenser and its subordinate's high-pressure heater, it is characterised in that：The forward type steam condenser is arranged in above subordinate's high-pressure heater, forward type steam condenser bottom arranges a hydrophobic outlet conduit, the pipeline accesses subordinate's high-pressure heater bottom using U-shaped connection form of tubes, and forward type steam condenser causes subordinate's high-pressure heater bottom condensate to form water seal within the U-shaped communicating pipe with its subordinate's high-pressure heater difference in height.The present invention simplifies forward type steam condenser draining system arrangement; cancel the drain regulating valve of cost intensive; hydrophobic passive discharge is realized, the hydrophobic steam turbine that backflows that booster in steam condenser, leakage safe and reliable can be avoided to cause, protection system safe operation.
Description
Technical field
The invention belongs to power plant auxiliary machine field, more particularly to steam condenser.
Background technology
Forward type steam condenser is to run without water level, has a small amount of condensate to produce, need to carry out in Cold Start
Hydrophobic normal discharge；In the case of tube leak or booster, there are a large amount of feedwater to enter shell-side, to avoid causing steam turbine to intake, need
Carry out hydrophobic dump and equipment blocking maintenance.Generally using setting drain regulating valve device drain discharge.
The deficiency that prior art is present：Due to steaming cold steam inside temperature height (usually more than 500 DEG C), the hydrophobic tune of setting
Section valve type selecting is difficult, and system control requires complexity, and cost of investment is high, while regulating valve longtime running there is also leakage and bite etc.
Failure.
The content of the invention
It is an object of the invention to：A kind of Steam Cooler System passive resistance protection device is proposed, simplifies forward type steam
Cooler draining system arrange, cancel cost intensive drain regulating valve, realize hydrophobic passive discharge, can safely, can
That what is leaned on avoids booster in steam condenser, leaks the hydrophobic steam turbine that backflows for causing, protection system safe operation.
The object of the invention is realized by following technical proposals：
A kind of Steam Cooler System passive resistance protection device, including forward type steam condenser and its subordinate's hyperbaric heating
Device, the forward type steam condenser are arranged in above subordinate's high-pressure heater, and forward type steam condenser bottom arranges one and dredges
Water exit conduit, the pipeline access subordinate's high-pressure heater bottom using U-shaped connection form of tubes, and forward type steam condenser with
Its subordinate's high-pressure heater difference in height causes subordinate's high-pressure heater bottom condensate to form water seal within the U-shaped communicating pipe, institute
State and on hydrophobic outlet conduit and forward type steam condenser, further respectively have liquid level detector, the hydrophobic outlet conduit and front
Put the liquid level detector on formula steam condenser and electrically connect control its warning respectively with warning device, the forward type steam is cold
But the liquid level detector on device is also electrically connected with the bypass valve of forward type steam condenser and subordinate's high-pressure heater and controls which
Break-make.
Alternatively, the liquid level detector is liquid-level switch.
Alternatively, the liquid level detector is remote level indicator.
Further select as another, the liquid level detector is magnetostriction liquidometer.
Alternatively, the liquid level detector on the forward type steam condenser arranges at least 3.
Aforementioned main scheme of the invention and its each further selection scheme can be this with independent assortment to form multiple schemes
Invention can be adopted and claimed scheme：Such as the present invention, it is combined with other selections by respectively selecting, people in the art
Member can understand there is multiple combination according to prior art and common knowledge after the present invention program is understood, and be claimed by the present invention
Technical scheme, here do not do exhaustion.
Beneficial effects of the present invention：The present invention is arranged to U-shaped Communicating device in steam condenser drain pipe from after the extraction of bottom
Next stage heater base is accessed, using the hydrophobic formation water seal arrangement of next stage heater base, it is to avoid in steam condenser
Steam by-pass flow enters heater.When producing hydrophobic in steam condenser, it is discharged into down by U-shaped Communicating device under gravity
Primary heater：
1st, the device eliminates the drain regulating valve and control system of high cost, enormously simplify system control and invests into
This, single price of steam condenser drain regulating valve is about 30,000 U.S. dollars；
2nd, improve reliability：The failure of drain regulating valve emerged in operation can be avoided, system maintenance is also saved
Operating cost.
Description of the drawings
Fig. 1 is the device schematic flow sheet of the embodiment of the present invention.
Specific embodiment
Following non-limiting examples are used to illustrate the present invention.
With reference to shown in Fig. 1, a kind of Steam Cooler System passive resistance protection device, including forward type steam condenser 1 and
Its subordinate's high-pressure heater 2, forward type steam condenser 1 are arranged in above subordinate's high-pressure heater 2, forward type steam condenser
1 bottom arranges a hydrophobic outlet conduit 3, and the pipeline accesses 2 bottom of subordinate's high-pressure heater using 4 form of U-shaped communicating pipe, and front
Put formula steam condenser 12 bottom condensate of subordinate's high-pressure heater is caused in the U-shaped with its 2 difference in height of subordinate's high-pressure heater
Water seal is formed in communicating pipe 4, on hydrophobic outlet conduit 3 and forward type steam condenser 1, liquid level detector 5 is further respectively had,
Liquid level detector 5 on hydrophobic outlet conduit 3 electrically connects control with warning device, and which is reported to the police, on forward type steam condenser 1
Liquid level detector 5 electrically connect with the bypass valve of forward type steam condenser 1 and subordinate's high-pressure heater 2 control its break-make.
Alternatively, liquid level detector 5 is liquid-level switch, magnetostriction liquidometer or remote level indicator, and forward type steam is cold
But the liquid level detector 5 on device 1 arranges at least 3.
The course of work is：(as shown in Figure 1) forward type steam condenser 1 is arranged in above subordinate's high-pressure heater 2, front
Put 1 outlet at bottom A points of formula steam condenser and one hydrophobic outlet conduit 3 is set, subordinate's high pressure is accessed using 4 form of U-shaped communicating pipe
2 bottom of heater.There is condensate 2 bottom of subordinate's high-pressure heater, when normally running, condenses shape in water Liu Dao U-shaped communicating pipes 4
Into water seal, steam by-pass is effectively isolated, prevent 1 steam of forward type steam condenser from subordinate is entered by hydrophobic outlet conduit 3 high
Pressure heater 2.A small amount of condensate that unit forward type steam condenser 1 in cold start-up is internally formed, or heat exchanger tube leak,
It is under the accident conditionses such as booster, hydrophobic that subordinate's high-pressure heater 2 is discharged into by Action of Gravity Field, dredging by subordinate's high-pressure heater 2
Water system enters oxygen-eliminating device or drain tank.As 1 pressure P1 of forward type steam condenser is deposited with 2 pressure P2 of subordinate high-pressure heater
In pressure reduction △ P (the flow resistance △ P=P1-P2 in jet chimney 6), adjustment forward type steam condenser 1 and its subordinate's high pressure
2 difference in height of heater so that 2 bottom condensate water liquid level of subordinate's high-pressure heater (B points) height H2, H2 when U-shaped communicating pipe 4 arranges
=H1+ △ H (in requiring accompanying drawing 1, C points liquid level is higher than 4 bottom caliber of U-shaped communicating pipe, it is ensured that form effective water seal).
Further, in order to prevent after 1 booster of forward type steam condenser, blocked drain causes to steam cold full water, is dredging
A liquid-level switch (or magnetostriction liquidometer, remote level indicator) is installed in water exit conduit 3 carries out first warning.
Many liquid-level switches (or magnetostriction liquidometer, remote level indicator), the warning are set on 1 body of forward type steam condenser
Point by 3 take 2 or similar fashion carry out the signal that second is reported to the police and sends equipment blocking, bypass valve events, excision steaming it is cold and
Heater device, prevents steam turbine from intaking.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of Steam Cooler System passive resistance protection device, including forward type steam condenser and its subordinate's hyperbaric heating
Device, it is characterised in that：The forward type steam condenser is arranged in above subordinate's high-pressure heater, forward type steam condenser bottom
Portion arranges a hydrophobic outlet conduit, and the hydrophobic outlet conduit accesses subordinate's high-pressure heater bottom using U-shaped connection form of tubes, and
Forward type steam condenser causes subordinate's high-pressure heater bottom condensate to connect in the U-shaped with its subordinate's high-pressure heater difference in height
Water seal is formed in siphunculus, liquid level detector is further respectively had on the hydrophobic outlet conduit and forward type steam condenser, institute
State the liquid level detector on hydrophobic outlet conduit and forward type steam condenser electrically connect with warning device respectively control its report
It is alert, the liquid level detector on the forward type steam condenser also with forward type steam condenser and subordinate's high-pressure heater
Bypass valve electrical connection controls its break-make.
2. Steam Cooler System passive resistance protection device as claimed in claim 1, it is characterised in that：The level detection dress
It is set to liquid-level switch.
3. Steam Cooler System passive resistance protection device as claimed in claim 1, it is characterised in that：The level detection dress
It is set to remote level indicator.
4. Steam Cooler System passive resistance protection device as claimed in claim 1, it is characterised in that：The level detection dress
It is set to magnetostriction liquidometer.
5. Steam Cooler System passive resistance protection device as claimed in claim 1, it is characterised in that：The forward type steam
Liquid level detector on cooler arranges at least 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510444211.9A CN104990060B (en) | 2015-07-24 | 2015-07-24 | A kind of Steam Cooler System passive resistance protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510444211.9A CN104990060B (en) | 2015-07-24 | 2015-07-24 | A kind of Steam Cooler System passive resistance protection device |
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| Publication Number | Publication Date |
|---|---|
| CN104990060A CN104990060A (en) | 2015-10-21 |
| CN104990060B true CN104990060B (en) | 2017-04-05 |
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| CN201510444211.9A Active CN104990060B (en) | 2015-07-24 | 2015-07-24 | A kind of Steam Cooler System passive resistance protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109869708B (en) * | 2017-12-01 | 2023-12-15 | 中国电力工程顾问集团华东电力设计院有限公司 | Control method and device for heat regeneration system of external steam cooler |
| CN114370631A (en) * | 2022-01-20 | 2022-04-19 | 广东韶钢松山股份有限公司 | Condensate recovery device of high-pressure feed water heater |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0942606A (en) * | 1995-07-31 | 1997-02-14 | Babcock Hitachi Kk | Once-through boiler steam temperature control device |
| JP3819161B2 (en) * | 1998-10-16 | 2006-09-06 | 株式会社東芝 | Feed water heater drain discharge device |
| CN201652318U (en) * | 2009-12-30 | 2010-11-24 | 中国电力工程顾问集团华东电力设计院 | Water supply and drainage system of medium-pressure heater of power station |
| CN203273855U (en) * | 2013-03-11 | 2013-11-06 | 中国电力工程顾问集团华东电力设计院 | Externally-arranged steam cooler system in regenerative system of power plant and regenerative system |
| CN203478195U (en) * | 2013-10-11 | 2014-03-12 | 山东电力工程咨询院有限公司 | External parallel-connection type steam cooler in fed water heating system of thermal power plant |
| CN203685322U (en) * | 2013-12-24 | 2014-07-02 | 河北省电力勘测设计研究院 | Steam extraction heat supply system for 350MW supercritical heat supply unit |
| CN204438078U (en) * | 2014-12-18 | 2015-07-01 | 上海申能能源科技有限公司 | A kind of jockey of Steam Heating start up system |
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