CN109812798A - 670MW Set Low Pressure Heater draining system - Google Patents
670MW Set Low Pressure Heater draining system Download PDFInfo
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- CN109812798A CN109812798A CN201910181761.4A CN201910181761A CN109812798A CN 109812798 A CN109812798 A CN 109812798A CN 201910181761 A CN201910181761 A CN 201910181761A CN 109812798 A CN109812798 A CN 109812798A
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- hydrophobic
- low
- liquid level
- pressure heaters
- water
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- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 230000008676 import Effects 0.000 claims abstract description 26
- 238000004891 communication Methods 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 46
- 230000005514 two-phase flow Effects 0.000 claims description 23
- 230000007704 transition Effects 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 230000010455 autoregulation Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000017858 Laurus nobilis Nutrition 0.000 description 1
- 235000005212 Terminalia tomentosa Nutrition 0.000 description 1
- 244000125380 Terminalia tomentosa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Control Of Non-Electrical Variables (AREA)
Abstract
The invention discloses a kind of 670MW Set Low Pressure Heater draining systems, No. 7 low-pressure heaters and No. 8 low-pressure heaters including unit end two-stage, the first hydrophobic import is provided at the top of No. 7 low-pressure heaters, the first hydrophobic import is connected to the hydrophobic outlet of the low-pressure heater of upper level by first pipe, and the middle side edge of No. 7 low-pressure heaters is provided with the first hydrophobic outlet；The side of No. 8 low-pressure heaters is provided with the second hydrophobic import and the second hydrophobic outlet, the height and position of the second hydrophobic outlet is lower than the described second hydrophobic import, height of the first hydrophobic outlet apart from level ground is higher than height of the described second hydrophobic import apart from level ground, and the first hydrophobic outlet passes through second pipe and the described second hydrophobic inlet communication.The present invention can effectively avoid the features such as blocked drain and hydrophobic water auto-regulation.
Description
Technical field
The present invention relates to the hydrophobic fields of generating set.It is more particularly related to a kind of 670MW unit low-pressure heating
Device draining system.
Background technique
Datang laurel Heshan electricity generating corporation, Ltd's 670MW supercritical coal-fired units were gone into operation in 2011, boiler SG-
2129/25.4-M6301 the overcritical transformation direct current cooker of type, steam turbine be N670-24.2/566/566 type it is overcritical, it is primary in
Between reheating, single shaft, three cylinders, four steam discharge, double back pressures, condensing turbine, generator be QFSN-670-2 type hydrogen cooled generator, volume
Determine power 670MW.Using 7 grades of extraction feedwater heat regenerative systems, it is equipped with 3 high-pressure heaters, 4 low-pressure heaters and 1 deoxygenation
Device.No. 5/6, No. 7/8 low-pressure heater be it is horizontal, double-flow surface-type, water chamber and shell are using being welded to connect.No. 5, No. 6 it is low
Add using the five, the six grades of steam extractions, be external heater, No. 7, No. 8 low-pressure heaters be assembly, 7A/7B, No. 8A/8B it is low
Pressure heater is placed on condenser throat using the seven, the eight grades of steam extractions, is built-in heater.As shown in Figure 1, No. 7, No. 8 it is low
The top of the hydrophobic import setting shell of heater is pressed, the hydrophobic outlet of No. 7 low-pressure heaters is arranged in the middle part of side, and No. 7
The hydrophobic outlet of low-pressure heater is connect by drain water piping with the hydrophobic import of No. 8 low-pressure heaters, and hydrophobic water level is increased
Difference and pipeline resistance are not able to satisfy still hydrophobic after making 7A/7B, 8A/8B low-pressure heater normally hydrophobic valve opening reaching 100%
It needs.7A/7B, 8A/8B low-pressure heater can only open emergent drain door due to blocked drain, and unit heat consumption is caused to increase,
Extraction cycle efficiency reduces, and has seriously affected the economy of unit.
Summary of the invention
It is excellent it is an object of the invention to solve at least the above problems and/or defect, and provide at least to will be described later
Point.
It is a still further object of the present invention to provide a kind of 670MW Set Low Pressure Heater draining systems, can make hydrophobic
Flow automatically step by step, avoids that blocked drain occurs.
In order to realize these purposes and other advantages according to the present invention, a kind of 670MW Set Low Pressure Heater is provided
Draining system, No. 7 low-pressure heaters and No. 8 low-pressure heaters including unit end two-stage,
No. 7 low-pressure heaters are horizontal setting, be provided at the top of No. 7 low-pressure heaters first it is hydrophobic into
Mouthful, the middle side edge of No. 7 low-pressure heaters is provided with the first hydrophobic outlet；
No. 8 low-pressure heaters are horizontal setting, be provided on the side wall of No. 8 low-pressure heaters second it is hydrophobic into
The height and position of mouth and the second hydrophobic outlet, the second hydrophobic outlet is lower than the described second hydrophobic import, and described first is hydrophobic
It exports the height apart from level ground and is higher than height of the described second hydrophobic import apart from level ground, the first hydrophobic outlet
Pass through second pipe and the described second hydrophobic inlet communication.
Preferably, the first normal hydrophobic pitch is provided on the second pipe.
Preferably, the second pipe includes the first standpipe, the second standpipe and transverse tube, first standpipe and described the
One hydrophobic outlet connection, second standpipe are connect with the described second hydrophobic import, and the transverse tube setting adds in No. 7 low pressure
The lower section of hot device and No. 8 low-pressure heaters, the transverse tube are connect with first standpipe and the second standpipe respectively by elbow.The
Two pipelines shorten second by being connected to the second hydrophobic import behind the lower section of No. 7 low-pressure heaters and No. 8 low-pressure heaters
The length of pipeline, and make hydrophobic be flowed into No. 8 low-pressure heaters under gravity.
Preferably, steam-water two-phase flow drainer is provided on the second pipe, the steam-water two-phase flow drainer is set
It sets in the normal hydrophobic pitch water discharging direction side, the water discharging direction side of the steam-water two-phase flow drainer is provided with isolation
Valve, No. 7 low-pressure heaters are provided with gas phase hole on the side wall at bottom level 2/3-3/4, and the gas phase hole passes through
Phase transition tube is connect with the vapour signal port of the steam-water two-phase flow drainer, is provided with steam gate valve on the phase transition tube.By setting
Steam-water two-phase flow drainer is set, realizes the water level in No. 7 low-pressure heaters of automatic adjustment.
Preferably, the bottom of the steam-water two-phase flow drainer is provided with level sensing transmitter, and described second is hydrophobic
Exit is provided with to carry out according to water yield of the level sensing transmitter liquid level signal detected to the described second hydrophobic outlet
The controller of control, the controller include single-chip microcontroller, memory and electronically controlled proportional valve, and the memory is pre-stored with liquid level
H1, H2 and H3, the single-chip microcontroller and the level sensing transmitter, memory and electronically controlled proportional valve are electrically connected, described automatically controlled
Proportion valve is mounted on the water yield that the second hydrophobic outlet is controlled in the second hydrophobic outlet, wherein the single-chip microcontroller is to described
Level sensing transmitter judges the liquid level h transmitted, if liquid level h < H1, the single-chip microcontroller control the automatically controlled ratio
Example valve opens 25%；If liquid level H1≤liquid level h≤liquid level H2, the single-chip microcontroller control electronically controlled proportional valve opens 50%, if liquid
Position H2≤liquid level h≤liquid level H3, the single-chip microcontroller control electronically controlled proportional valve opens 75%, if liquid level H3≤liquid level h, the monolithic
Machine controls electronically controlled proportional valve and opens 100%.By control electronically controlled proportional valve and level sensing transmitter, No. 8 low pressure are automatically adjusted
Liquid level in heater makes No. 8 low-pressure heaters maintain normal fluid level.
Preferably, be provided with bypass duct on the second pipe, the bypass duct be connected to isolating valve and
The two sides of normal hydrophobic pitch are equipped with the hydrophobic pitch of bypass on the bypass duct.By the way that bypass duct is arranged, it is convenient for vapour-liquid
The maintenance of two phase flow steam trap and the continuous service of equipment.
Preferably, one way stop peturn valve is provided on the second pipe, the one way stop peturn valve is arranged in the isolation
The water outlet side of valve.
The present invention is include at least the following beneficial effects: the setting height of the second of No. 8 low-pressure heaters the hydrophobic import is low
Height in the first hydrophobic outlet of No. 7 low-pressure heaters makes the hydrophobic of No. 7 low-pressure heaters that can flow into No. 8 low pressure naturally
In heater, the negative height difference of second pipe beginning and terminal room is made to become positive value, reduces pipeline local resistance and rub along journey and hinder
Power；By single-chip microcontroller and electronically controlled proportional valve, the liquid level in No. 8 low-pressure heaters is automatically adjusted, maintains No. 8 low-pressure heaters just
Normal fluid level.The present invention can effectively avoid the features such as blocked drain and hydrophobic water auto-regulation.
Further advantage, target and feature of the invention will be partially reflected by the following instructions, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is the structural representation of No. 7 low-pressure heaters (7A, 7B) and No. 8 low-pressure heaters (8A, 8B) in the prior art
Figure；
Fig. 2 is the pipeline connection schematic diagram of No. 7 low-pressure heaters and No. 8 low-pressure heaters of the invention；
Fig. 3 is the pipeline connection schematic diagram of No. 7 low-pressure heaters and No. 8 low-pressure heaters of the invention.
1, first pipe；2, hydrophobic outlet；3, the hydrophobic entrance of No. 7 low-pressure heaters；4, No. 8 low-pressure heaters is hydrophobic
Entrance, 5, drain water piping；6, the first hydrophobic import；7, the first hydrophobic outlet；8, the second hydrophobic import；9, the second hydrophobic outlet；
10, second pipe；11, steam-water two-phase flow drainer；12, steam gate valve；13, bypass duct；14, hydrophobic pitch is bypassed；15, every
From valve；16, normal hydrophobic pitch；17, electronically controlled proportional valve；20, the first hydrophobic pitch.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of a other elements or combinations thereof.
Embodiment
As Figure 2-3, a kind of 670MW Set Low Pressure Heater draining system, No. 7 low pressure including unit end two-stage add
Hot device and No. 8 low-pressure heaters,
No. 7 low-pressure heaters are horizontal setting, the cross sections of No. 7 low-pressure heaters be it is semi-circular, described No. 7
The first hydrophobic import 6 is provided at the top of low-pressure heater, the first hydrophobic import 6 is dredged with the low-pressure heater of upper level
Water out is connected to by first pipe, and the middle side edge of No. 7 low-pressure heaters is provided with the first hydrophobic outlet 7；
The cross section of No. 8 low-pressure heaters is semi-circular, the horizontal side that No. 7 low-pressure heaters are arranged in
Surrounding cross section with No. 7 low-pressure heaters is circular structure, and the side of No. 8 low-pressure heaters is provided with second and dredges
The height and position of water inlet 8 and the second hydrophobic outlet 9, the second hydrophobic outlet 9 is lower than the described second hydrophobic import 8, described
First hydrophobic 7 height apart from level ground of outlet is higher than height of the described second hydrophobic import 8 apart from level ground, and described the
One hydrophobic outlet 7 is connected to by second pipe 10 with the described second hydrophobic import 8.
On the basis of the above embodiments, in one embodiment, it is normal thin that first is provided on the second pipe 10
Water pitch 16.
On the basis of the above embodiments, in one embodiment, the second pipe 10 is stood including the first standpipe, second
Pipe and transverse tube, first standpipe are connect with the described first hydrophobic outlet 7, second standpipe and the described second hydrophobic import 8
The lower section of No. 7 low-pressure heaters and No. 8 low-pressure heaters is arranged in connection, the transverse tube, and the transverse tube passes through elbow point
It is not connect with first standpipe and the second standpipe.Second pipe 10 passes through under No. 7 low-pressure heaters and No. 8 low-pressure heaters
It is connected to the second hydrophobic import 8 behind side, shortens the length of second pipe 10, and makes hydrophobic to be flowed under gravity
In No. 8 low-pressure heaters.
On the basis of the above embodiments, in one embodiment, stream-liquid two-phase flow is provided on the second pipe 10
The side of normal hydrophobic 16 water discharging direction of pitch, the vapour is arranged in steam trap 11, the steam-water two-phase flow drainer 11
The water discharging direction side of liquid two-phase steam trap 11 is provided with isolating valve 15, and No. 7 low-pressure heaters are apart from bottom level 2/
Gas phase hole is provided on the side wall at place, the gas phase hole passes through the vapour of phase transition tube and the steam-water two-phase flow drainer 11
Signal port connects, and is provided with steam gate valve 12 on the phase transition tube.When the water level in No. 7 low-pressure heaters rises, vapour amount letter
Number reduce, steam-water two-phase flow drainer is passed to by phase transition tube, in steam-water two-phase flow drainer liquid level rise, hydrophobic displacement
Increase, finally makes the water level decreasing in No. 7 low-pressure heaters；Conversely, when the water level decreasing in No. 7 low-pressure heaters, vapour amount
Signal increases, and passes to steam-water two-phase flow drainer by phase transition tube, and the liquid level in steam-water two-phase flow drainer reduces, hydrophobic row
Output is reduced, and increase the water level in No. 7 low-pressure heaters, to reach No. 7 low-pressure heater water level purposes of control.
On the basis of the above embodiments, in one embodiment, the bottom of the steam-water two-phase flow drainer is provided with
Level sensing transmitter, the second hydrophobic exit are provided with according to level sensing transmitter liquid level signal detected to institute
The controller that the water yield of the second hydrophobic outlet is controlled is stated, the controller includes single-chip microcontroller, memory and automatically controlled ratio
Valve 17, the memory are pre-stored with liquid level H1, H2 and H3, the single-chip microcontroller and the level sensing transmitter, memory and
Electronically controlled proportional valve 17 is electrically connected, and the electronically controlled proportional valve door is mounted in the second hydrophobic outlet, wherein the single-chip microcontroller is to institute
It states level sensing transmitter to judge the liquid level h transmitted, if liquid level h < H1, the single-chip microcontroller control are described automatically controlled
Proportion valve opens 25%；If liquid level H1≤liquid level h≤liquid level H2, the single-chip microcontroller control electronically controlled proportional valve open 50%, if
Liquid level H2≤liquid level h≤liquid level H3, the single-chip microcontroller control electronically controlled proportional valve opens 75%, if liquid level H3≤liquid level h, the list
Piece machine controls electronically controlled proportional valve and opens 100%.It is detected in steam-water two-phase flow drainer by using level sensing transmitter 19
SEA LEVEL VARIATION avoids No. 7 low pressure from adding in time, automatically to adjust the liquid level in No. 8 low-pressure heaters by electronically controlled proportional valve 17
Hydrophobic water level in hot device and No. 8 low-pressure heaters is too high or too low, guarantees the safe operation of equipment；Pass through level sensing pick-up
Device detects the liquid level variation in steam-water two-phase flow drainer, timely adjusts opening for electronically controlled proportional valve door according to liquid level change information
Degree of leaving keeps the water level regulation of No. 8 low-pressure heaters more sensitive.
On the basis of the above embodiments, in one embodiment, it is provided with bypass duct 13 on the second pipe 10,
The bypass duct 13 is connected to the two sides of isolating valve 15 and normal hydrophobic pitch 16, is equipped on the bypass duct 13
Bypass hydrophobic pitch 14.By the way that bypass duct 13 is arranged, convenient for the maintenance of steam-water two-phase flow drainer 11 and continuing for equipment
Operation.
On the basis of the above embodiments, in one embodiment, it is provided with one way stop peturn valve on the second pipe, institute
State the water outlet side that the isolating valve is arranged in one way stop peturn valve.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With.It can be applied to various suitable the field of the invention completely.It for those skilled in the art, can be easily
Realize other modification.Therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (7)
1. a kind of 670MW Set Low Pressure Heater draining system, No. 7 low-pressure heaters and No. 8 low pressure including unit end two-stage
Heater, which is characterized in that
No. 7 low-pressure heaters are horizontal setting, are provided with the first hydrophobic import, institute at the top of No. 7 low-pressure heaters
The middle side edge for stating No. 7 low-pressure heaters is provided with the first hydrophobic outlet；
No. 8 low-pressure heaters are horizontal setting, and the side wall of No. 8 low-pressure heaters is provided with the second hydrophobic import and the
Two hydrophobic outlets, the height and position of the second hydrophobic outlet are lower than the described second hydrophobic import, the first hydrophobic outlet away from
Height from level ground is higher than the height of level ground with a distance from the described second hydrophobic import, and the first hydrophobic outlet passes through the
Two pipelines and the described second hydrophobic inlet communication.
2. 670MW Set Low Pressure Heater draining system according to claim 1, which is characterized in that the second pipe
On be provided with the first normal hydrophobic pitch.
3. 670MW Set Low Pressure Heater draining system according to claim 1, which is characterized in that the second pipe
Including the first standpipe, the second standpipe and transverse tube, first standpipe is connected with the described first hydrophobic outlet, second standpipe and
The lower section of No. 7 low-pressure heaters and No. 8 low-pressure heaters, institute is arranged in the second hydrophobic import connection, the transverse tube
Transverse tube is stated to connect with first standpipe and the second standpipe respectively by elbow.
4. 670MW Set Low Pressure Heater draining system according to claim 2, which is characterized in that the second pipe
On be provided with steam-water two-phase flow drainer, the steam-water two-phase flow drainer setting is in the normal hydrophobic pitch water discharging direction one
Side, the water discharging direction side of the steam-water two-phase flow drainer are provided with isolating valve, and No. 7 low-pressure heaters are apart from bottom height
Gas phase hole is provided on side wall at degree 2/3-3/4, the gas phase hole passes through phase transition tube and the steam-water two-phase flow drainer
Vapour signal port connects, and is provided with steam gate valve on the phase transition tube.
5. 670MW Set Low Pressure Heater draining system according to claim 4, which is characterized in that the vehicle repair major
The bottom of stream steam trap is provided with level sensing transmitter, and the second hydrophobic exit is provided with according to level sensing transmitter
The controller that liquid level signal detected controls the water yield of the described second hydrophobic outlet, the controller include monolithic
Machine, memory and electronically controlled proportional valve, the electronically controlled proportional valve door are mounted in the second hydrophobic outlet, and the memory is pre-stored with
Liquid level H1, H2 and H3, the single-chip microcontroller and the level sensing transmitter, memory and electronically controlled proportional valve are electrically connected, wherein
The single-chip microcontroller judges the liquid level h transmitted the level sensing transmitter, if liquid level h < H1, the monolithic
Machine controls the electronically controlled proportional valve door and opens 25%；If liquid level H1≤liquid level h≤liquid level H2, the single-chip microcontroller control automatically controlled ratio
Valve opens 50%, if liquid level H2≤liquid level h≤liquid level H3, the single-chip microcontroller control electronically controlled proportional valve opens 75%, if liquid level H3
≤ liquid level h, the single-chip microcontroller control electronically controlled proportional valve open 100%.
6. 670MW Set Low Pressure Heater draining system according to claim 5, which is characterized in that the second pipe
On be provided with bypass duct, the bypass duct is connected to the two sides of isolating valve and normal hydrophobic pitch, the shunt valve
Bypass hydrophobic pitch is installed on road.
7. 670MW Set Low Pressure Heater draining system according to claim 5, which is characterized in that the second pipe
On be provided with one way stop peturn valve, the water outlet side of the isolating valve is arranged in the one way stop peturn valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181761.4A CN109812798A (en) | 2019-03-11 | 2019-03-11 | 670MW Set Low Pressure Heater draining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910181761.4A CN109812798A (en) | 2019-03-11 | 2019-03-11 | 670MW Set Low Pressure Heater draining system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109812798A true CN109812798A (en) | 2019-05-28 |
Family
ID=66608643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910181761.4A Pending CN109812798A (en) | 2019-03-11 | 2019-03-11 | 670MW Set Low Pressure Heater draining system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109812798A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6279593B1 (en) * | 1999-01-15 | 2001-08-28 | Hie Sheppard | Electric steam trap system and method of draining condensate |
| US20130188939A1 (en) * | 2012-01-19 | 2013-07-25 | Alstom Technology Ltd | Heating system for a thermal electric power station water circuit |
| CN108413378A (en) * | 2018-04-19 | 2018-08-17 | 重庆大学 | It is a kind of to be used for steam turbine and low plus safe and stable operation system |
| CN108644756A (en) * | 2018-07-13 | 2018-10-12 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of low-pressure heater draining system |
| CN209726157U (en) * | 2019-03-11 | 2019-12-03 | 大唐桂冠合山发电有限公司 | 670MW Set Low Pressure Heater draining system |
-
2019
- 2019-03-11 CN CN201910181761.4A patent/CN109812798A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6279593B1 (en) * | 1999-01-15 | 2001-08-28 | Hie Sheppard | Electric steam trap system and method of draining condensate |
| US20130188939A1 (en) * | 2012-01-19 | 2013-07-25 | Alstom Technology Ltd | Heating system for a thermal electric power station water circuit |
| CN108413378A (en) * | 2018-04-19 | 2018-08-17 | 重庆大学 | It is a kind of to be used for steam turbine and low plus safe and stable operation system |
| CN108644756A (en) * | 2018-07-13 | 2018-10-12 | 中国能源建设集团陕西省电力设计院有限公司 | A kind of low-pressure heater draining system |
| CN209726157U (en) * | 2019-03-11 | 2019-12-03 | 大唐桂冠合山发电有限公司 | 670MW Set Low Pressure Heater draining system |
Non-Patent Citations (2)
| Title |
|---|
| 凌峰等: "解决7 号低压加热器疏水不畅的技术方案", 电站辅机, vol. 30, no. 3, pages 55 - 11 * |
| 刘自放: "《给水排水自动控制与仪表》", 中国建筑工业出版社, pages: 10 - 11 * |
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