CN104990060A - Passive protection device for steam cooler system - Google Patents
Passive protection device for steam cooler system Download PDFInfo
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- CN104990060A CN104990060A CN201510444211.9A CN201510444211A CN104990060A CN 104990060 A CN104990060 A CN 104990060A CN 201510444211 A CN201510444211 A CN 201510444211A CN 104990060 A CN104990060 A CN 104990060A
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- pressure heater
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- steam condenser
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Abstract
The invention discloses a passive protection device for a steam cooler system, and belongs to the field of power plant auxiliary equipment. The device comprises a front steam cooler and a lower-level high-pressure heater. The device is characterized in that the front steam cooler is arranged above the lower-level high-pressure heater, and a drained water outlet pipeline is arranged at the bottom of the front steam cooler. The pipeline is connected to the bottom of the lower-level high-pressure heater through a U-shaped communication pipe. By means of the height difference of the front steam cooler and the lower-level high-pressure heater, condensate water at the bottom of the lower-level high-pressure heater forms water seal in the U-shaped communication pipe. Arrangement of a drained water system of the front steam cooler is simplified, a drained water adjusting valve high in cost is omitted, and passive discharge of drained water is achieved. The situation that pipes in a steam cooler burst and leak water and accordingly the drained water flows back to a steam turbine can be safely and reliably avoided, and safe operation of the system is protected.
Description
Technical field
The invention belongs to power plant auxiliary machine field, particularly relate to steam condenser.
Background technology
Forward type steam condenser is run without water level, has a small amount of condensate water to produce, need to carry out hydrophobic normal discharge in Cold Start; There is when tube leak or booster a large amount of feedwater to enter shell-side, for avoiding causing steam turbine to intake, needing to carry out hydrophobic dump and equipment blocking maintenance.Usual employing arranges drain regulating valve device drain discharge.
The deficiency that prior art exists: owing to steaming cold steam inside temperature high (usually more than 500 DEG C), the drain regulating valve type selecting difficulty arranged, Systematical control requires complicated, and cost of investment is high, and control valve longtime running also exists the faults such as leakage and bite simultaneously.
Summary of the invention
The object of the invention is to: propose a kind of Steam Cooler System passive resistance protection device; simplify forward type steam condenser draining system to arrange; cancel the drain regulating valve of cost intensive; realize hydrophobic non-active discharge; safe and reliablely can avoid booster in steam condenser, leak the hydrophobic steam turbine that backflows caused, 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, comprise forward type steam condenser and subordinate's high-pressure heater thereof, described forward type steam condenser is arranged in above subordinate's high-pressure heater, one hydrophobic outlet conduit is set bottom forward type steam condenser, this pipeline adopts bottom U-shaped communicating pipe form access subordinate high-pressure heater, and forward type steam condenser and its subordinate's high-pressure heater difference in height make condensate water bottom subordinate's high-pressure heater form water seal within this U-shaped communicating pipe, described hydrophobic outlet conduit and forward type steam condenser are also respectively equipped with liquid level detector, liquid level detector on described hydrophobic outlet conduit and forward type steam condenser is electrically connected with warning device respectively and controls it and report to the police, liquid level detector on described forward type steam condenser is also electrically connected with the bypass valve of forward type steam condenser and subordinate's high-pressure heater and controls its break-make.
As selection, described liquid level detector is liquid-level switch.
As selection, described liquid level detector is remote level indicator.
Select further as another, described liquid level detector is magnetostriction liquidometer.
As selection, the liquid level detector on described forward type steam condenser arranges at least 3.
The main scheme of aforementioned the present invention and each further selection scheme thereof can independent assortment to form multiple scheme; be the present invention can adopt and claimed scheme: as the present invention; each selection can select any combination with other; those skilled in the art can understand there is multiple combination according to prior art and common practise after understanding the present invention program; be the claimed technical scheme of the present invention, do not do exhaustive at this.
Beneficial effect of the present invention: the present invention is after steam condenser drain pipe is drawn from bottom, be arranged to U-shaped Communicating device access next stage heater base, utilize the hydrophobic formation water seal arrangement of next stage heater base, avoid steam by-pass flow in steam condenser to enter heater.When producing hydrophobic in steam condenser, be discharged into next stage heater under gravity by U-shaped Communicating device:
1, this device eliminates the high drain regulating valve of cost and control system, enormously simplify Systematical control and cost of investment, and steam condenser drain regulating valve single price is approximately 30,000 U.S. dollars;
2, improve reliability: the fault that drain regulating valve emerged in operation can be avoided, also save the operating cost of system maintenance.
Accompanying drawing explanation
Fig. 1 is the device schematic flow sheet of the embodiment of the present invention.
Detailed description of the invention
Following non-limiting examples is for illustration of the present invention.
Shown in figure 1, a kind of Steam Cooler System passive resistance protection device, comprise forward type steam condenser 1 and subordinate's high-pressure heater 2 thereof, forward type steam condenser 1 is arranged in above subordinate's high-pressure heater 2, one hydrophobic outlet conduit 3 is set bottom forward type steam condenser 1, this pipeline adopts bottom U-shaped communicating pipe 4 form access subordinate high-pressure heater 2, and forward type steam condenser 1 and its subordinate's high-pressure heater 2 difference in height make condensate water bottom subordinate's high-pressure heater 2 form water seal within this U-shaped communicating pipe 4, hydrophobic outlet conduit 3 and forward type steam condenser 1 are also respectively equipped with liquid level detector 5, liquid level detector 5 on hydrophobic outlet conduit 3 is electrically connected with warning device and controls it and report to the police, the bypass valve of the liquid level detector 5 on forward type steam condenser 1 and forward type steam condenser 1 and subordinate's high-pressure heater 2 is electrically connected and controls its break-make.As selection, liquid level detector 5 is liquid-level switch, magnetostriction liquidometer or remote level indicator, and the liquid level detector 5 on forward type steam condenser 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, forward type steam condenser 1 outlet at bottom A point arranges a hydrophobic outlet conduit 3, adopts bottom U-shaped communicating pipe 4 form access subordinate high-pressure heater 2.Have condensate water bottom subordinate's high-pressure heater 2, when normally running, condensate water flows in U-shaped communicating pipe 4 and forms water seal, effectively isolates steam by-pass, prevents forward type steam condenser 1 steam from entering subordinate's high-pressure heater 2 by hydrophobic outlet conduit 3.Unit a small amount of condensate water that forward type steam condenser 1 inside is formed when cold start-up, or under the accident conditionses such as heat exchanger tube leakage, booster, hydrophobicly be discharged into subordinate's high-pressure heater 2 by Action of Gravity Field, enter oxygen-eliminating device or drain tank by the draining system of subordinate's high-pressure heater 2.Because forward type steam condenser 1 pressure P 1 and subordinate's high-pressure heater 2 pressure P 2 exist 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 heater 2 difference in height, make subordinate's high-pressure heater 2 bottom condensate water liquid level (B point) height H 2, H2=H1+ △ H (requiring that in accompanying drawing 1, C point liquid level, higher than caliber bottom U-shaped communicating pipe 4, is guaranteed to form effective water seal) when U-shaped communicating pipe 4 arranges.
Further, after preventing forward type steam condenser 1 booster, blocked drain causes and steams cold full water, hydrophobic outlet conduit 3 is installed a liquid-level switch (or magnetostriction liquidometer, remote level indicator) and carries out first warning.Forward type steam condenser 1 body arranges many liquid-level switches (or magnetostriction liquidometer, remote level indicator), this alarm point by 3 get 2 or similar fashion carry out second warning and send the signal of equipment blocking, bypass valve action, cold and heater device is steamed in excision, prevents steam turbine from intaking.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a Steam Cooler System passive resistance protection device, comprise forward type steam condenser and subordinate's high-pressure heater thereof, it is characterized in that: described forward type steam condenser is arranged in above subordinate's high-pressure heater, one hydrophobic outlet conduit is set bottom forward type steam condenser, this pipeline adopts bottom U-shaped communicating pipe form access subordinate high-pressure heater, and forward type steam condenser and its subordinate's high-pressure heater difference in height make condensate water bottom subordinate's high-pressure heater form water seal within this U-shaped communicating pipe, described hydrophobic outlet conduit and forward type steam condenser are also respectively equipped with liquid level detector, liquid level detector on described hydrophobic outlet conduit and forward type steam condenser is electrically connected with warning device respectively and controls it and report to the police, liquid level detector on described forward type steam condenser is also electrically connected with the bypass valve of forward type steam condenser and subordinate's high-pressure heater and controls its break-make.
2. Steam Cooler System passive resistance protection device as claimed in claim 1, is characterized in that: described liquid level detector is liquid-level switch.
3. Steam Cooler System passive resistance protection device as claimed in claim 1, is characterized in that: described liquid level detector is remote level indicator.
4. Steam Cooler System passive resistance protection device as claimed in claim 1, is characterized in that: described liquid level detector is magnetostriction liquidometer.
5. Steam Cooler System passive resistance protection device as claimed in claim 1, is characterized in that: the liquid level detector on described forward type steam condenser 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 |
Publications (2)
| Publication Number | Publication Date |
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| CN104990060A true CN104990060A (en) | 2015-10-21 |
| CN104990060B CN104990060B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869708A (en) * | 2017-12-01 | 2019-06-11 | 中国电力工程顾问集团华东电力设计院有限公司 | The control method and its device of outer steam cooler heat regenerative system |
| 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 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869708A (en) * | 2017-12-01 | 2019-06-11 | 中国电力工程顾问集团华东电力设计院有限公司 | The control method and its device of outer steam cooler heat regenerative system |
| 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 |
Also Published As
| Publication number | Publication date |
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| CN104990060B (en) | 2017-04-05 |
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