CN109458235A - A kind of steam exhaust draining system and method - Google Patents
A kind of steam exhaust draining system and method Download PDFInfo
- Publication number
- CN109458235A CN109458235A CN201811542813.8A CN201811542813A CN109458235A CN 109458235 A CN109458235 A CN 109458235A CN 201811542813 A CN201811542813 A CN 201811542813A CN 109458235 A CN109458235 A CN 109458235A
- Authority
- CN
- China
- Prior art keywords
- hydrophobic
- steam exhaust
- collection device
- drain
- draining system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000001926 trapping method Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims 1
- 238000005457 optimization Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 230000003260 anti-sepsis Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/32—Collecting of condensation water; Drainage ; Removing solid particles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of steam exhaust draining system and methods, it is related to the drain recovery field of unit in power plant, the steam exhaust draining system includes hydrophobic collection device and drain discharge device, the hydrophobic collection device is successively connect with the drain discharge device, it is formed hydrophobic from the circulation passage for focusing on discharge, the circulation passage holding negative pressure state.It arranges that steam exhaust drain water piping is not necessarily to buried arrangement by the steam exhaust draining system of optimization, hydrophobic quickly discharge nearby can be made, the drain water piping arrangement of optimization is succinct convenient, reduces project amount, pipeline is also not easy to damage.Meanwhile using hydrophobic canned motor pump after, greatly reduce the liquid level requirement of the hydrophobic collection device of negative pressure, the also simple many of actual motion operation.
Description
Technical field
The present invention relates to the drain recovery field of unit in power plant more particularly to a kind of steam exhaust draining system and methods.
Background technique
Calorific potential just can be transformed into kinetic energy after pipeline introduces steam turbine by the superheated steam with calorific potential energy.Flow at high speed
Steam Actuation turbine rotor rotation, formed mechanical energy.The steam for releasing calorific potential energy is arranged from the steam drain of steam turbine lower part
Out, referred to as steam exhaust.The condensed water that steam exhaust declines and generates because of pressure, temperature in pipeline is referred to as hydrophobic.It is hydrophobic to arrange in time
It puts, otherwise not only steam heat, influence steam flow in absorption tube, and it is serious to generate water hammer, cause serious consequence.
According to code requirement, steam trap connection should be set before the low points of steam pipe network, the pipeline section of vertical ascent.Steam exhaust utilizes
Cause pipe arrangement diversified, existing drain water piping arrangement is roughly divided into two kinds, the first is the nothing in exhaust steam pipeline arrangement
When need to be across pedestrian passage overhead or large obstacle, drain water piping can tilt slope arrangement, hydrophobic thin from host is flowed back to
Waterpipe or neighbouring hot well；It is for second when needing in exhaust steam pipeline arrangement across pedestrian passage overhead or large obstacle, because
It is all negative pressure state and gravity for exhaust steam pipeline and drain water piping, drain water piping can not be together across buried can only tilting
Slope arrangement.
But there are the following problems that 1, buried drain water piping is inconvenient to overhaul for the buried arrangement of drain water piping；2, buried drain water piping
It needs additionally to consider heat preservation and anti-corrosion；3, buried drain water piping buried depth is shallower, and caliber is small, is easy to be damaged；4, civil engineering
Amount increases.
Therefore, those skilled in the art is dedicated to developing a kind of new steam exhaust draining system and method, avoids drain pipe
The buried arrangement in road.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to how inside drain water piping
When for negative pressure state, the buried arrangement of drain water piping is avoided.
To achieve the above object, the present invention provides a kind of steam exhaust draining systems, including hydrophobic collection device and hydrophobic row
Device is put, the hydrophobic collection device is successively connect with the drain discharge device, is formed hydrophobic from the circulation for focusing on discharge
Channel, the circulation passage keep negative pressure state.
Further, the drain discharge device includes hydrophobic canned motor pump.
Further, the hydrophobic canned motor pump is at least arranged 2.
Further, the quantity of the hydrophobic canned motor pump increases with the increase of hydrophobic amount.
Further, the hydrophobic canned motor pump parallel connection, forms the drain discharge channel of multi-set parallel.
Further, the both ends of the hydrophobic canned motor pump are connected with valve.
Further, the hydrophobic collection device includes steam exhaust drain tank.
Further, the hydrophobic collection device is circumscribed with vacuum lead and steam exhaust drain water piping.
The present invention also provides a kind of steam exhaust trapping methods, the described method comprises the following steps:
Step 1 will be evacuated inside the hydrophobic collection device；
Step 2 opens the hydrophobic collection device, collects hydrophobic；
Step 3 opens the drain discharge device, discharges hydrophobic.
Further, hydrophobic discharge in the step 3 is to be discharged by the hydrophobic canned motor pump, and can pass through institute
State the size that hydrophobic canned motor pump dynamic adjusts drain discharge amount.
It arranges that steam exhaust drain water piping is not necessarily to buried arrangement by the steam exhaust draining system of optimization, can make hydrophobic quick nearby
The drain water piping arrangement of discharge, optimization is succinct convenient, reduces project amount, pipeline is also not easy to damage.Meanwhile use is hydrophobic
After canned motor pump, the liquid level requirement of the hydrophobic collection device of negative pressure, the also simple many of actual motion operation are greatly reduced.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is exhaust steam pipeline and drain water piping arrangement schematic diagram；
Fig. 2 is the overall schematic of a preferred embodiment of the invention；
Fig. 3 is the overall schematic of another preferred embodiment of the invention；
Fig. 4 is the overall schematic of another preferred embodiment of the invention.
Specific embodiment
Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and there is no limit by the present invention
The size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
In general, exhaust steam pipeline caliber is larger, and drain water piping caliber is relatively much smaller, and drain water piping is frequently located in steam exhaust pipe
The arranged beneath in road.As shown in Figure 1, when needing in exhaust steam pipeline arrangement across pedestrian passage overhead or large obstacle, because
The reason of for exhaust steam pipeline and drain water piping being all negative pressure state and gravity, drain water piping can not together across.In order to solve to dredge
The problem of water discharges in time, the scheme taken now are but the buried arrangements of drain water piping by the buried arrangement of drain water piping
Bring a series of contingency question.
In order to solve the problems, such as that brought by the buried arrangement of drain water piping, the present invention provides a kind of steam exhaust draining systems.Such as
Be one embodiment of the present of invention shown in Fig. 2, including hydrophobic collection device 1 and drain discharge device 2, hydrophobic collection device 1 with
Drain discharge device 2 successively connects, and formation is hydrophobic from the circulation passage 3 for focusing on discharge, wherein hydrophobic collection device 1 is responsible for dredging
The concentration of water, drain discharge device 2 are responsible for going out the drain discharge of collection, hydrophobic collection device 1, drain discharge device 2, stream
Circulation passage 3 always remains as negative pressure state, therefore circulation passage 3 also to be kept to be isolated with extraneous, guarantees ambient atmosphere not
It can enter inside pipeline.
Wherein, drain discharge device 2 includes hydrophobic canned motor pump 201.Hydrophobic canned motor pump 201, which eliminates conventional centrifugal pump, to be had
Sealing device for rotary shaft, can accomplish complete No leakage, it is ensured that by drain discharge to hot well or heat pump steam exhaust condensed water
Extraneous atmosphere not can enter the inside of drain discharge pipeline during system.
Fig. 3 is another embodiment of the invention.In Fig. 3, hydrophobic collection device 1 is specially a cylindric steam exhaust
The placement position of drain tank, steam exhaust drain tank can be adjusted according to external actual environment, and the steam exhaust in the present embodiment is dredged
Water tank is horizontal positioned.It is a cross section in the middle section of the steam exhaust drain tank is circular long cylinder, at the top of long cylinder
It is covered with bottom by the semicircle outwardly protruded, a closed space is constituted, for the hydrophobic of store collected.
In the present embodiment, cylindric steam exhaust drain tank is connect with steam exhaust drain water piping 4.Unit is entire in power plant
There is many places steam exhaust drain water piping 4 in drain recovery part.The steam exhaust drain water piping 4 of a portion, because exhaust steam pipeline 5 is not required to
Host drain water piping or attached can be flowed back to automatically across hydrophobic in pedestrian passage or large obstacle, steam exhaust drain water piping 4
Near-thermal well, but some steam exhaust drain water piping 4, because exhaust steam pipeline 5 is needed across pedestrian passage or large obstacle, steam exhaust
Hydrophobic in drain water piping 4 cannot flow back to host drain water piping or neighbouring hot well automatically, then hydrophobic to first pass through these steam exhaust hydrophobic
Pipeline 4, which flows in steam exhaust drain tank, to be collected.Valve, the valve are equipped between steam exhaust drain water piping 4 and hydrophobic collection device 1
For adjusting hydrophobic circulation, when the hydrophobic flow in steam exhaust drain water piping 4 becomes larger, control valve increases valve
Hydrophobic circulation within the unit time, so that hydrophobic timely discharge, avoids the occurrence of water hammer, cause serious consequence.
Hydrophobic collection device 1 is circumscribed with vacuum lead 6, by the vacuum lead 6 and external vacuum evacuation device into
Row connection.The inside of hydrophobic collection device 1 is evacuated by the vacuum evacuation device.Vacuum lead 6 is equipped with valve, leads to
The adjustable strength vacuumized of the valve is crossed, the pressure inside hydrophobic collection device 1 is adjusted.
Hydrophobic collection device 1 is also circumscribed with blowdown flushing pipe 7, and the dirt in hydrophobic collection device 1 is excluded, row
Dirty flushing pipe 7 is equipped with valve, for adjusting the speed of dirt discharge, guarantees at the cleannes inside hydrophobic collection device 1
In state up to standard.In addition, when using the steam exhaust draining system for the first time, it can be by blowdown flushing pipe 7, to hydrophobic collection device
1 is rinsed.
In 2 part of drain discharge device of the present embodiment, it is configured with two hydrophobic canned motor pumps 201.
Optionally, the quantity of hydrophobic canned motor pump 201 can increase with the increase of drain discharge amount.
It is connected in parallel between more hydrophobic canned motor pumps 201, forms the drain discharge channel of multi-set parallel, improve drain discharge
Efficiency.In the embodiment shown in fig. 3, two hydrophobic canned motor pumps 201 take the mode of parallel connection, in circulation passage 3
The hydrophobic drain discharge channel being successively made up of two hydrophobic canned motor pumps 201, and connection steam exhaust condensate system or attached
The pipeline 8 of near-thermal well is discharged into nearby in steam exhaust condensate system or neighbouring hot well.
The both ends of two hydrophobic canned motor pumps 201 are all connected with valve, valve can control the drain discharge channel open with
It closes, and in the case where opening, adjusts the size of drain discharge amount.
The present invention also provides a kind of steam exhaust trapping methods, and this approach includes the following steps (as shown in Figure 3):
Step 1 passes through vacuum lead 6, and the inside of steam exhaust drain tank is evacuated；
Step 2, steam exhaust drain tank start to collect it is hydrophobic, it is hydrophobic from multiple steam exhaust drain water pipings 4；
Step 3 opens hydrophobic canned motor pump 201, hydrophobic by hydrophobic canned motor pump 201 and will connect steam exhaust condensate system
Or nearby the pipeline 8 of hot well is discharged into nearby in steam exhaust condensate system or neighbouring hot well.
According to hydrophobic uninterrupted, the valve of hydrophobic 201 two sides of canned motor pump is adjusted, the control of discharge amount is carried out.It can also
According to specific hydrophobic flow, two hydrophobic canned motor pumps 201 are switched on, or only open a wherein hydrophobic canned motor pump 201.
As shown in figure 4, being another embodiment of the invention.On the basis of Fig. 2, add in hydrophobic 1 part of collection device
Enter sensor 8 and corrosion-proof ring 9.Sensor 8 passes through hydrophobic collection device 1, and is fixed on hydrophobic collection device 1.Sensor 8 can
To be arranged on any position of hydrophobic collection device 1, it is preferably provided at the bottom of hydrophobic collection device 1.The setting of sensor 8 exists
Part inside hydrophobic collection device 1 can obtain the PH of hydraulic pressure information inside hydrophobic collection device 1, water level information and water
Value.The part outside hydrophobic collection device 1 is arranged in configured with indicator light in sensor 8.Sensor 8 be internally provided with hydraulic pressure,
The threshold value of water level, pH value, measured hydraulic pressure information, water level information and pH value can hydraulic pressure corresponding with setting, water level, PH
The threshold value of value is compared in real time, when measured hydraulic pressure information, water level information and pH value are more than corresponding threshold value, if
Setting the indicator light outside hydrophobic collection device 1 will light, and there are three types of colors for indicator light, respectively correspond hydraulic pressure, water level, pH value
More than corresponding threshold value.Staff can according to the different colours of indicator light, the hydraulic pressure that takes appropriate measures, water level or
PH value drops to threshold value or less.After hydraulic pressure, water level or pH value drop to threshold value or less, corresponding indicator light will extinguish, thus
Guarantee that hydraulic pressure, water level and pH value in hydrophobic collection device 1 are maintained within reasonable threshold range, extends hydrophobic collection device
1 working life.
The inside for being fixed on hydrophobic collection device 1 is set in corrosion-proof ring 9, and multiple corrosion-proof rings 9 can be set.Corrosion-proof ring 9 is
Made of anti-corrosion alloy material, anti-corrosion alloy is mainly made of copper, zinc, lead, tin, rare earth element.Corrosion-proof ring 9 is constantly to hydrophobic
Electronics is provided, it is hydrophobic with antisepsis rich in electronics.Circulation passage 3 and drain discharge device 2 are flowed through rich in electronics is hydrophobic,
Because hydrophobic antisepsis can extend the service life of entire draining system.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of steam exhaust draining system, which is characterized in that including hydrophobic collection device and drain discharge device, the hydrophobic collection
Device is successively connect with the drain discharge device, is formed hydrophobic from the circulation passage for focusing on discharge, the circulation passage guarantor
Hold negative pressure state.
2. steam exhaust draining system as described in claim 1, which is characterized in that the drain discharge device includes hydrophobic shielding
Pump.
3. steam exhaust draining system as claimed in claim 2, which is characterized in that the hydrophobic canned motor pump is at least arranged 2.
4. steam exhaust draining system as claimed in claim 3, which is characterized in that the quantity of the hydrophobic canned motor pump is with hydrophobic amount
Increase and increases.
5. steam exhaust draining system as claimed in claim 3, which is characterized in that the hydrophobic canned motor pump parallel connection is formed more
The parallel drain discharge channel of group.
6. steam exhaust draining system as claimed in claim 2, which is characterized in that the both ends of the hydrophobic canned motor pump are connected with valve
Door.
7. steam exhaust draining system as described in claim 1, which is characterized in that the hydrophobic collection device includes that steam exhaust is hydrophobic
Case.
8. steam exhaust draining system as described in claim 1, which is characterized in that the hydrophobic collection device is circumscribed with vacuum-pumping tube
Road and steam exhaust drain water piping.
9. a kind of steam exhaust trapping method, which is characterized in that the described method comprises the following steps:
Step 1 will be evacuated inside the hydrophobic collection device；
Step 2 opens the hydrophobic collection device, collects hydrophobic；
Step 3 opens the drain discharge device, discharges hydrophobic.
10. steam exhaust trapping method as claimed in claim 9, which is characterized in that hydrophobic discharge in the step 3 is to pass through institute
It states hydrophobic canned motor pump to be discharged, and the size of drain discharge amount can be adjusted by the hydrophobic canned motor pump dynamic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542813.8A CN109458235A (en) | 2018-12-17 | 2018-12-17 | A kind of steam exhaust draining system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811542813.8A CN109458235A (en) | 2018-12-17 | 2018-12-17 | A kind of steam exhaust draining system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109458235A true CN109458235A (en) | 2019-03-12 |
Family
ID=65613494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811542813.8A Pending CN109458235A (en) | 2018-12-17 | 2018-12-17 | A kind of steam exhaust draining system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109458235A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748387A (en) * | 2019-11-04 | 2020-02-04 | 中国能源建设集团山西省电力勘测设计院有限公司 | Drainage system and drainage method for lower steam exhaust pipeline of low-position-arranged water feeding pump steam turbine |
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| CN202972503U (en) * | 2012-12-03 | 2013-06-05 | 山西省电力勘测设计院 | Drainage system employing external closed pressure drainage tank |
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2018
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| CN105276652A (en) * | 2014-05-30 | 2016-01-27 | 国网山西省电力公司电力科学研究院 | Thermal state flushing device of exhaust-steam absorption heat pump |
| CN105180142A (en) * | 2015-09-02 | 2015-12-23 | 华北电力科学研究院有限责任公司 | System and method for recovering drain water and steam of soot-blowing warming pipe |
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| Title |
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| 湖南省老科技工作者协会电力分会: "《防止电力生产重大事故的要求与措施》", 中国电力出版社, pages: 601 - 602 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110748387A (en) * | 2019-11-04 | 2020-02-04 | 中国能源建设集团山西省电力勘测设计院有限公司 | Drainage system and drainage method for lower steam exhaust pipeline of low-position-arranged water feeding pump steam turbine |
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