CN107152420A - A kind of Thermal generation unit high efficiency and heat radiation denitration pump - Google Patents
A kind of Thermal generation unit high efficiency and heat radiation denitration pump Download PDFInfo
- Publication number
- CN107152420A CN107152420A CN201710380896.4A CN201710380896A CN107152420A CN 107152420 A CN107152420 A CN 107152420A CN 201710380896 A CN201710380896 A CN 201710380896A CN 107152420 A CN107152420 A CN 107152420A
- Authority
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- China
- Prior art keywords
- pump
- annular air
- circulating water
- cooling
- lubrication groove
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5866—Cooling at last part of the working fluid in a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of Thermal generation unit high efficiency and heat radiation denitration pump, including the pump housing, pump shaft, impeller, circulating water intake, circulating water outlet, lubrication groove, cooling tube, two annular air coolers；The impeller is provided with close to described circulating water intake one end on the pump shaft, the circulating water outlet is on the pump housing close to the side of the circulating water intake；The lubrication groove is located at pump shaft periphery, and the lubrication groove periphery is provided with two annular air coolers, and the annular air cooler side is provided with the cooling tube, and the cooling tube is exported provided with cooling medium inlet and cooling medium.Beneficial effects of the present invention are：（1）The cooling tube that lubrication groove periphery is set is available for cooling medium to circulate, and the heat produced during motor work has been distributed, while also serving the effect of cooling to the hot water of motor cavity；（2）The annular air cooler small volume that lubrication groove periphery is set, the rapid effect that cools is good, easy to clean.
Description
Technical field
The present invention relates to pump field, and in particular to a kind of Thermal generation unit high efficiency and heat radiation denitration pump.
Background technology
Thermal generation unit, is the plant equipment that the chemical energy of the fossil fuels such as coal is converted into electric energy.China independently sets
Meter, the gigawatt ultra supercritical double reheat Thermal generation unit of manufacture are built up in Jiangsu Taizhou.This is first will in the world
Double reheat technology is applied to gigawatt ultra-supercritical coal-fired power generating units, is also China's thermoelectricity technology in high parameter Large Copacity
An important breakthrough of external intellectual property constraint is thoroughly broken away from terms of unit.The engineering is by China Guodian (Group)Corporation, China
Power engineering consultant group, the electric Power Station Group tripartite coalition tackling key problem in Shanghai, generator set desulfurization, denitrification apparatus synchronously put into operation, had
The features such as advanced safe, unit efficiency of unit parameter is advanced in the world, environment protection emission index is optimal, is to promote China's energy science and technology leather
The important measure of life.
With what is newly revised《Fossil-fuel power plant atmospheric pollutant emission standard》（GB13223-2011）Implement, to thermal power plant's nitrogen
Emissions of oxides proposes more strict requirements.In face of the Demand of Nation of Ecological Civilization Construction, based on China based on coal
Energy resources natural endowment feature determine China with coal electricity based on power supply architecture, power industry nitrogen oxides dominates the situation face before
The pressure not having.Changed in particular with society's electricity consumption structure, it is low negative that large area, long-time occurs in fossil-fired unit
The situation of lotus operation, causes the cigarette temperature into denitrating system too low, and then leverages thermal power plant's denitrating system bringing normally into operation,
Serious adverse effect is brought to nitrogen oxides emission reduction.
To reduce the discharge of pollutant in boiler operatiopn, the environmental requirement of country is met, the import cigarette temperature of denitrification apparatus must
Must be in the range of 300 DEG C ~ 420 DEG C.And boiler design is reduction exhaust gas temperature, the thermal efficiency is improved, enough province's coals are generally set
Device heating surface area, reduces the outlet cigarette temperature of economizer, especially at low load, because economizer exit cigarette temperature is relatively low, no as far as possible
The requirement that puts into operation of denitrification apparatus can be met.In the case, it is necessary to take measures to carry the flue-gas temperature for entering denitrification apparatus
Height arrives catalyst allowed band.In order to solve this problem, need to carry out denitrating system progress it is new design and develop, in systems
Circulation waterway is set, and the high-temperature water that more than 300 DEG C of conveying improves the temperature of flue gas in denitrification apparatus into denitrification apparatus, and
According to the temperature of flue gas by adjusting the size of the flow of water, the steady of denitration inlet flue gas temperature under the different low-load states of unit is realized
Fixed, security reliability is high.Denitration pump is key equipment therein.
Denitration pump is made up of pump and motor, pump and motor direct connection, the connection of shell body flange, pump chamber and motor cavity shape
Into a seal cavity interconnected, rotor is coaxial with impeller of pump.The motor for starting circulating pump is a kind of special
Wet stator motor, its more than internal pressure 21MPa is identical with system pressure, and winding can only be immersed directly in the working medium of conveying
In.380 DEG C of high temperature above can not be resistant in view of the insulating materials of machine winding, winding environment have to be improved, pass through heat exchange
Device cools down the hot water of motor cavity（Generally by temperature control to less than 60 DEG C）, so since, internal slide bearing and
The use environment of thrust disc is also improved.Electrical machinery life has guarantee with reliability.Simultaneously with the continuous change of unit load
Change, the changes in flow rate of denitration pump is big, start-stop frequency is high, it is desirable to which its starting performance and the shock resistance of bearing will get well.In order to protect
The normal operation of whole denitration pump motor is demonstrate,proved, the environment temperature of controlled motor operation is particularly important.
The content of the invention
The invention aims to overcome deficiency of the prior art, there is provided a kind of Thermal generation unit high efficiency and heat radiation
Denitration pump, in order to solve the above technical problems, the technical scheme is that：
A kind of Thermal generation unit is gone out with high efficiency and heat radiation denitration pump, including the pump housing, pump shaft, impeller, circulating water intake, recirculated water
Mouth, lubrication groove, cooling tube, two annular air coolers；The impeller is provided with close to described circulating water intake one end on the pump shaft,
The circulating water outlet is on the pump housing close to the side of the circulating water intake；The lubrication groove is outside the pump shaft
Enclose, the lubrication groove periphery is provided with two annular air coolers, and the annular air cooler side is provided with the cooling tube, described
Cooling tube is exported provided with cooling medium inlet and cooling medium；
The annular air cooler includes tube bank, air intlet and air outlet slit, and the air intlet extension line and the air go out
Mouth extension line is overlapped and overlapped with diameter where the annular air cooler；The tube bank is several；The air intlet and institute
Air outlet slit is stated to be mutually perpendicular to the tube bank respectively.
Preferably, the annular air cooler is mutually perpendicular to the pump shaft.
Preferably, it is parallel to each other between two annular air coolers.
Preferably, the cooling tube is vertical with the annular air cooler ring surface.
Beneficial effects of the present invention are：（1）The cooling tube that lubrication groove periphery is set is available for cooling medium to circulate, and has distributed electricity
The heat that machine is produced when working, while also serving the effect of cooling to the hot water of motor cavity；（2）Lubrication groove periphery is set
Annular air cooler small volume, the rapid effect that cools is good, easy to clean；（3）Made in the application of annular air cooler using natural air
For cooling medium, the water resource of preciousness is saved, the discharge of trade effluent has been reduced, protects natural environment.
Brief description of the drawings
Accompanying drawing 1 is schematic structural view of the invention；
Accompanying drawing 2 is annular air cooler structural representation；
Accompanying drawing 3 is annular air cooler cross section structure schematic diagram.
Embodiment
To make to have a better understanding and awareness to architectural feature of the invention and the effect reached, to preferably
Embodiment and accompanying drawing coordinate detailed description, are described as follows：
As shown in accompanying drawing 1 ~ 3, a kind of Thermal generation unit high efficiency and heat radiation denitration pump, including the pump housing 100, pump shaft 200, impeller
300th, circulating water intake 400, circulating water outlet 500, lubrication groove 600, cooling tube 700, two annular air coolers 800；The pump
The impeller 300 is provided with close to described one end of circulating water intake 400 on axle 200, the circulating water outlet 500 is located at the pump housing
Close to the side of the circulating water intake 400 on 100；The lubrication groove 600 is located at the periphery of pump shaft 200, the lubrication groove
Lubricant medium can be placed in 600, the operating to the pump shaft 200 serves the effect of lubrication.Wherein described lubrication groove 600
Periphery is provided with two annular air coolers 800, and the annular air cooler 800 is mutually perpendicular to the pump shaft 200, described in two
It is parallel to each other between annular air cooler 800；The side of annular air cooler 800 is provided with the cooling tube 700, the cooling tube
700 provided with cooling medium inlet 701 and cooling medium outlet 702；The cooling tube 700 and the annular ring of air cooler 800
Shape face is vertical.Cooling medium can be passed through in the cooling tube 700, in use, by cooling medium from the cooling medium inlet
It is passed through in 701, the cooling medium of entrance can take away the high temperature that motor operates recirculated water in the heat distributed and motor cavity, band
There is the cooling medium of heat is last to be discharged from cooling medium outlet 702.
As shown in Figure 2, heretofore described annular air cooler 800 is two, can be according to reality in practical application
Need to increase or reduce the number of the annular air cooler 800.Wherein air cooler be using surrounding air as cooling medium,
Blower fan forces that air is horizontal plunders finned-tube bundle, the heat transmission equipment for making tube bank periphery high-temperature technology fluid be cooled down or condensed.It is described
Annular air cooler 800 includes tube bank 801, air intlet 802 and air outlet slit 803, the extension line of air intlet 802 and described
The extension line of air outlet slit 803 is overlapped and overlapped with the annular place diameter of air cooler 800；The tube bank 801 is several；Institute
Air intlet 802 and the air outlet slit 803 is stated to be mutually perpendicular to the tube bank 801 respectively, only need to be by cold air when use
Be passed through from the air intlet 802, cold air will by it is described tube bank 801, cold air by it is described tube bank 801 while just
The temperature of motor cavity hot water can be taken away, hot water temperature has been obtained good decline, the air with heat is from described afterwards
Discharged in air outlet slit 803.Tube bank is substantially linear pattern in general existing air cooler, and floor space is big, and volume is big, cleaning and
Safeguard also inconvenient, in the present invention, change the shape of the tube bank 801, being set to annular can reduce entirely on a large scale
The volume of air cooler, and the effect of cooling is also ensure that simultaneously, the annular air cooler 800 is also very convenient in terms of cleaning, only
Cleaning fluid high pressure need to be injected to the flushing tube bank 801 from the air intlet 802, the waste liquid after cleaning is directly from the sky
Discharged in gas outlet 803, it is easy to clean quick, safeguard also simple；Meanwhile, air cooler cooling is used as cooling using natural air
Medium, has saved the water resource of preciousness, has reduced the discharge of trade effluent, protect natural environment.
Beneficial effects of the present invention are：（1）The cooling tube that lubrication groove periphery is set is available for cooling medium to circulate, and has distributed electricity
The heat that machine is produced when working, while also serving the effect of cooling to the hot water of motor cavity；（2）Lubrication groove periphery is set
Annular air cooler small volume, the rapid effect that cools is good, easy to clean；（3）Made in the application of annular air cooler using natural air
For cooling medium, the water resource of preciousness is saved, the discharge of trade effluent has been reduced, protects natural environment.
It should be understood by those skilled in the art that, the present invention is not limited to the above embodiments, above-described embodiment and explanation
The principle of the simply present invention described in book, it is of the invention without departing from the spirit and scope of the present invention also to have various changes
Change and improve, these changes and improvements are both fallen within the range of claimed invention.The protection domain of application claims by
Appended claims and its equivalent are defined.
Claims (4)
1. a kind of Thermal generation unit high efficiency and heat radiation denitration pump, it is characterised in that：Including the pump housing（100）, pump shaft（200）, leaf
Wheel（300）, circulating water intake（400）, circulating water outlet（500）, lubrication groove（600）, cooling tube（700）, two annular air coolings
Device（800）；The pump shaft（200）The upper close circulating water intake（400）One end is provided with the impeller（300）, the circulation
Water out（500）Located at the pump housing（100）The upper close circulating water intake（400）Side；The lubrication groove（600）If
In the pump shaft（200）Periphery, the lubrication groove（600）Periphery is provided with two annular air coolers（800）, the annular sky
Cooler（800）Side is provided with the cooling tube（700）, the cooling tube（700）It is provided with cooling medium inlet（701）And cooling
Media outlet（702）；
The annular air cooler（800）Including tube bank（801）, air intlet（802）And air outlet slit（803）, the air enters
Mouthful（802）Extension line and the air outlet slit（803）Extension line overlap and with the annular air cooler（800）Place diameter weight
Close；The tube bank（801）For several；The air intlet（802）And the air outlet slit（803）Respectively with the tube bank
（801）It is mutually perpendicular to.
2. a kind of Thermal generation unit according to claim 1 high efficiency and heat radiation denitration pump, it is characterised in that：The annular
Air cooler（800）With the pump shaft（200）It is mutually perpendicular to.
3. a kind of Thermal generation unit according to claim 1 high efficiency and heat radiation denitration pump, it is characterised in that：Described in two
Annular air cooler（800）Between be parallel to each other.
4. a kind of Thermal generation unit according to claim 1 high efficiency and heat radiation denitration pump, it is characterised in that：The cooling
Pipe（700）With the annular air cooler（800）Ring surface is vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380896.4A CN107152420A (en) | 2017-05-25 | 2017-05-25 | A kind of Thermal generation unit high efficiency and heat radiation denitration pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710380896.4A CN107152420A (en) | 2017-05-25 | 2017-05-25 | A kind of Thermal generation unit high efficiency and heat radiation denitration pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107152420A true CN107152420A (en) | 2017-09-12 |
Family
ID=59794176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710380896.4A Pending CN107152420A (en) | 2017-05-25 | 2017-05-25 | A kind of Thermal generation unit high efficiency and heat radiation denitration pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107152420A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS614897A (en) * | 1984-06-14 | 1986-01-10 | ヨツト エム フオイト ゲ−エムベ−ハ− | Method of lubricating and cooling rotatory bearing for axialfan and axial fan for executing said method |
| CN203430865U (en) * | 2013-06-21 | 2014-02-12 | 自贡东联泵阀制造有限公司 | Denitration pump |
| CN103912504A (en) * | 2014-04-25 | 2014-07-09 | 无锡市安化屏蔽电泵厂 | High temperature canned motor pump |
| CN104863902A (en) * | 2015-05-31 | 2015-08-26 | 江苏国河泵业科技有限公司 | Pump shaft oil temperature cooling device |
| CN205225864U (en) * | 2015-10-29 | 2016-05-11 | 重庆岷龙机械制造有限公司 | Heat dissipation mechanism of immersible pump |
| CN205744610U (en) * | 2016-01-11 | 2016-11-30 | 欧技工业设备（江苏）有限公司 | A kind of large-scale circulating pump of band cooling device for bearing housing |
-
2017
- 2017-05-25 CN CN201710380896.4A patent/CN107152420A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS614897A (en) * | 1984-06-14 | 1986-01-10 | ヨツト エム フオイト ゲ−エムベ−ハ− | Method of lubricating and cooling rotatory bearing for axialfan and axial fan for executing said method |
| CN203430865U (en) * | 2013-06-21 | 2014-02-12 | 自贡东联泵阀制造有限公司 | Denitration pump |
| CN103912504A (en) * | 2014-04-25 | 2014-07-09 | 无锡市安化屏蔽电泵厂 | High temperature canned motor pump |
| CN104863902A (en) * | 2015-05-31 | 2015-08-26 | 江苏国河泵业科技有限公司 | Pump shaft oil temperature cooling device |
| CN205225864U (en) * | 2015-10-29 | 2016-05-11 | 重庆岷龙机械制造有限公司 | Heat dissipation mechanism of immersible pump |
| CN205744610U (en) * | 2016-01-11 | 2016-11-30 | 欧技工业设备（江苏）有限公司 | A kind of large-scale circulating pump of band cooling device for bearing housing |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20170912 |