CN208967781U - A kind of steam exhaust recovering device - Google Patents
A kind of steam exhaust recovering device Download PDFInfo
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- CN208967781U CN208967781U CN201821634838.6U CN201821634838U CN208967781U CN 208967781 U CN208967781 U CN 208967781U CN 201821634838 U CN201821634838 U CN 201821634838U CN 208967781 U CN208967781 U CN 208967781U
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- steam exhaust
- water
- blaster
- layer
- import
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Abstract
The utility model discloses a kind of steam exhaust recovering devices, the equipment of the steam exhaust recovering device is sequentially connected as cyclic water tank, water circulating pump, water-blaster, steam exhaust import, mixing chamber, corrugated-type expansion joint, silencing means, heat exchanger, oxygen-eliminating device, the top of the water-blaster and mixing chamber junction is arranged in the steam exhaust import, the other side of the cyclic water tank is sequentially connected drain tank, drainage pump and the oxygen-eliminating device, the water-blaster, the outside of steam exhaust import and mixing chamber is equipped with shakeproof layer, noise reduction layer, insulating layer and erosion resistant coating, vacuum table is installed in the steam exhaust suction line.Scheme provided by the utility model can make steam exhaust that Desalting Water System be discharged, and the deaerating effect of oxygen-eliminating device is fully achieved, steam exhaust heat can recycle completely, and steam exhaust is without outlet, condensed water in steam exhaust returns to boiler recycling, at the same guarantee equipment it is steady, efficiently, continuous operation.
Description
Technical field
The utility model belongs to boiler steam exhaust recovery technology field, and in particular to a kind of steam exhaust recovering device.
Background technique
With the continuous development of society with the continuous improvement of people's Consciousness of Sustainable Development, the reasonable utilization of resource, which becomes, works as
The important topic of modern world research.In thermal power generation unit, to guarantee safe operation of the boiler and prolonging the service life, boiler water
It needs to carry out blowdown, usually using continuous blowdown or periodic blowdown, but a large amount of spent hot waters and pressure can be discharged while blowdown
Power isolates secondary steam (steam exhaust) by decompression, dilatation and gives up to recycle spent hot water and pressure design blowdown system
Hot water, steam exhaust are discharged into atmosphere, and spent hot water is discharged into sewerage after blowdown cools down.In addition, boiler feed is in order to exclude in water
Dissolved oxygen, need to exclude the mixture (steam exhaust) of a large amount of pressurized vapors and oxygen, cause high steam thermal energy and hot water
Waste.If the thermal energy and water resource in steam exhaust can be recycled rationally, economic and social benefit is significant.
Currently, there are mainly two types of steam exhaust recovery technologies: (1) forming negative-pressure vacuum using water-blaster, steam exhaust is taken away and is gone forward side by side
Enter Desalting Water System, subsequently into oxygen-eliminating device, the disadvantage is that the steam exhaust of discharge contains oxygen, enters deoxygenation again after water-blaster
Device cannot reach deaerating effect, and equipment vibration is big, noise is big, often leaks at pipe flange, high failure rate, no
It can stable operation；(2) heat exchanger is used, the heat of steam exhaust institute band is exchanged and recycle, the disadvantage is that medium-pressure boiler oxygen-eliminating device pressure
Lower (0.02MPa), and steam exhaust pressure is higher, oxygen-eliminating device cannot reach deaerating effect at high temperature, cause desalted water oxygen content
Exceeded, boiler corrosion rate is high.So both the above steam exhaust recovering device can not achieve the therrmodynamic system requirement of steam exhaust recycling.
Patent CN201720952173.2 discloses a kind of boiler dead steam recovery system, including boiler arrange surely flash vessel, with
Boiler arranges flash vessel surely and is connected and is used to receive the receipts energy device of steam exhaust, is connected with receipts energy device and be used for receipts energy device water supply
Cooling water device, the boiler economizer being connected with receipts energy device water outlet.Arrange the steam exhaust being discharged in flash vessel surely from boiler
Be passed through receipts can device, while external cooling water device is to receiving the cooling water that can be passed through lower temperature in device, cooling water and weary
Vapour is being received and can carry out heat exchange in device, to be recycled to the heat in steam exhaust, increases cooling water temperature, into pot
Furnace economizer.The patent is mainly recycled the heat of steam exhaust using heat exchange method.
Patent CN201710615882.6 proposes a kind of steam exhaust recycling system, comprising: the dilution trap of steam exhaust is stored, it is dilute
Slot is released to export equipped with steam exhaust；For storing the buffering hot water storgae of hot water, buffering hot water storgae is equipped with hot water inlet；Heating dress
It sets, heating device has heat exchange chamber, and heating device is equipped with the steam exhaust import being connected to heat exchange chamber, cooling water inlet, hot water
Outlet, steam exhaust import and steam exhaust outlet, hot water outlet are connected to hot water inlet, and heating device is higher than dilution trap and buffering heat
Sink setting.The patent recycles steam exhaust using heat exchange method, and the heating device added in scheme increases energy consumption.
Patent CN200820012361.8 discloses a kind of steam exhaust recovering device, including fixed gas tapping equipment, spray are inhaled
Receiving apparatus, blended absorbent device, low pressure steam exhaust induction apparatus, water tank, anti cavitation device and high-temperature water pump.On spray-absorption device
Equipped with row's fixed gas mouth, desalination water inlet and stainless pipe nozzle；Blended absorbent device is equipped with stainless steel cloth filler；Low pressure is weary
Vapour induction apparatus is equipped with low pressure steam exhaust import, venturi nozzle and softened water (or desalted water) import；Water tank is equipped with middle pressure
Steam exhaust import, high pressure steam exhaust import and water outlet.The patent is recycled in steam exhaust using spray method of the desalted water by heat exchange
Heat, however desalted water is directly contacted with steam exhaust, causes a degree of pollution of desalted water.
In short, the device and method currently used for steam exhaust recycling are there are some disadvantages, high pressure-temperature steam exhaust is being recycled
The biggish thermal (temperature difference) stress of system bring and vibrating noise are given in the process, influence the stable operation and service life of equipment；Due to
High pressure steam exhaust is dealt with improperly, and subsequent desalted water water quality or deaerating effect are influenced；Institute's heat content and steam recycling are endless in steam exhaust
Congruent disadvantage, so that current steam exhaust recovering device can not achieve the therrmodynamic system requirement of steam exhaust recycling.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of steam exhaust recovering device, the steam exhaust in described device can be arranged
Desalting Water System out, and the deaerating effect of oxygen-eliminating device is fully achieved, steam exhaust heat can recycle completely, and steam exhaust is without outlet, steam exhaust
In condensed water return to boiler recycling, while guarantee equipment it is steady, efficiently, continuous operation.It is raw that described device meets boiler
Production. art requirement, and system conditions do not change, and boiler duty is consistent with former steam production, and deaerating effect is protected
It holds consistent with original system setting.
In order to achieve the above objectives, technical solution used by the utility model is to provide a kind of steam exhaust recovering device, described
The equipment of steam exhaust recovering device is sequentially connected as cyclic water tank, water circulating pump, water-blaster, steam exhaust import, mixing chamber, bellow expansion
The top of the water-blaster and mixing chamber junction, institute is arranged in section, silencing means, heat exchanger, oxygen-eliminating device, the steam exhaust import
The other side for stating cyclic water tank is sequentially connected drain tank, drainage pump and the oxygen-eliminating device, the water-blaster, steam exhaust import and mixing
The outside of chamber is equipped with shakeproof layer, noise reduction layer, insulating layer and erosion resistant coating, installs vacuum table in the steam exhaust suction line.
The steam exhaust absorption plant is improved in terms of shockproof, noise reduction and anti-corrosion, including, the water-blaster is included to follow
Ring water tank and water circulating pump guarantee that the power resources of the water-blaster are steady, the negative regulation of generation；The water-blaster it is each
The distance between flange and threeway lengthen, and the water-blaster, steam exhaust import and mixing chamber are welded with pawl nail, to mitigate the steam exhaust
The vibration of absorption plant；The outside of the water-blaster, steam exhaust import and mixing chamber is shakeproof layer, and the shakeproof layer is penetrated described
The external surrounding encirclement SS304 stainless steel plate of hydrophone, steam exhaust import and mixing chamber, the joints cement inside the stainless steel plate,
The shakeproof layer increases the own wt of equipment, mitigates vibration when operation；The outside of the shakeproof layer is noise reduction layer, described to disappear
Sound-absorbing layer wraps up shakeproof layer using acoustical foam board, guarantees equipment vibration reduction and lower noise；The outside of the noise reduction layer is to protect
Warm layer, the insulating layer can reduce the thermal loss of the water-blaster, steam exhaust import and mixing chamber, prevent scald operations staff,
Prevent air to contact with equipment, prevents the moisture in air from forming drop in equipment outer wall, corrode equipment；Outside the insulating layer
Side is erosion resistant coating, prevents equipment from corroding.
The outlet of the cyclic water tank connects the water circulating pump, and the outlet of the water circulating pump passes through described in piping connection
The import of water-blaster, the lower recirculated water of temperature in the cyclic water tank enter the water-blaster by the water circulating pump,
It sprays through the water-blaster, is contacted with steam exhaust.
The oxygen-eliminating device (or flash vessel) connects the steam exhaust import, due to the steam exhaust absorption plant and steam exhaust absorption tube
The subnormal ambient on road, steam exhaust enter the steam exhaust import from the oxygen-eliminating device (or flash vessel) automatically, contact with the recirculated water,
Then it under the driving of the water-blaster, is sufficiently mixed in the mixing chamber, forms high temperature mixed liquor.
The steam exhaust suction line include the oxygen-eliminating device (or flash vessel) between the steam exhaust import, the recirculated water
The connecting line between the water-blaster is pumped, vacuum table is installed in the steam exhaust suction line, monitors steam exhaust negative pressure value, adjustment
The flow of inlet water of the water-blaster guarantees negative pressure value in a certain range, makes in oxygen-eliminating device in the condition of high temperature, moreover it is possible to guarantee negative
Pressure absorbs steam exhaust.
The outlet of the mixing chamber connects the corrugated-type expansion joint by pipeline, the corrugated-type expansion joint surface have screw thread and
It can be SS304 stainless steel with dilatation, the material of the corrugated-type expansion joint, the corrugated-type expansion joint is skid with flexibility
Structure, it is compact to design, it is easily installed and moves, the high temperature mixed liquor enters the expansion ripple section, so that room temperature installation
Pipe temperature increases, and the stress injury of thermal expansion and the generation of pipeline influences very big, institute to the inlet and outlet flange of the heat exchanger
The thermal expansion difference that pipeline is generated by the temperature difference can be compensated by axial deformation by stating corrugated-type expansion joint, reduced axial load, reduced temperature
Poor stress avoids pipeline from pulling destruction.
The outlet of the corrugated-type expansion joint connects the silencing means by pipeline, and the two sides of the silencing means used
Filter plate blocks, and is loaded between the filter plate with SS304 stainless steel strip, and the loading of the stainless steel strip is 70-80%, described
The length of stainless steel strip is 3-5mm, and the high temperature mixed liquor can reduce noise and vibration when passing through the silencing means, is reduced
Impact to equipment and pipeline.
The outlet of the silencing means connects the heat exchanger by pipeline, and the high temperature mixed liquor is in the heat exchanger
It exchanges heat with desalted water, steam exhaust heat exchange to desalted water, desalination coolant-temperature gage is increased.
The desalination water out of the heat exchanger connects the oxygen-eliminating device by pipeline, and the raised desalted water of temperature enters deoxygenation
Device carries out deoxygenation, and then boiler of feeding uses, and so far the heat of the steam exhaust passes through a series of exchange, is all returned to described remove
Oxygen device.
The mixture export of the heat exchanger connects the import of the cyclic water tank by pipeline, so that condensed high temperature
Mixed liquor returns to cyclic water tank, becomes recirculated water.
The cyclic water tank connects the drain tank by overflow pipe, and the outlet of the drain tank is connected by the drainage pump
It is connected to the oxygen-eliminating device, after the recirculated water in the cyclic water tank reaches certain liquid level, is flowed automatically to by the overflow pipe described
Drain tank is transmitted back to the oxygen-eliminating device by the drainage pump after normal pressure deoxygenation, and so far the moisture of the steam exhaust passes through one
The processing of series, is all returned to the oxygen-eliminating device.
Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:
1, the utility model is by increasing water-blaster self weight, and setting cyclic water tank, water circulating pump, pawl is followed closely and silencing means,
Equipment vibration can be effectively reduced, noise is reduced；By the way that corrugated-type expansion joint is arranged, equipment and pipeline as caused by the temperature difference are reduced
Expansion effects and stress injury, make equipment it is steady, efficiently, continuous operation.
2, steam exhaust and desalted water exchange heat in scheme provided by the utility model, and heat transfer is realized again to desalted water
It utilizes, Desalting Water System can be discharged in steam exhaust, and the deaerating effect of oxygen-eliminating device is fully achieved, therefore this programme can improve steam exhaust
Recovery efficiency guarantees that the heat of steam exhaust and moisture recycle completely, and steam exhaust is without outlet.
3, negative pressure value is monitored, the feed water flow of water-blaster is adjusted by setting vacuum table in scheme provided by the utility model
Amount, and then control negative pressure value in a certain range, guarantee in oxygen-eliminating device in the condition of high temperature, moreover it is possible to guarantee negative pressure absorbing steam exhaust.
4, scheme provided by the utility model meets the manufacturing technique requirent of apparatus of thermo-electric power boiler, and energy-saving effect is good, and system
Operating condition does not change, and boiler duty is consistent with former steam production, and deaerating effect keeps the phase being arranged with original system
Unanimously, equipment energy long period, fault-free continuous operation guarantee service life of equipment >=15 year under normal operating conditions.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is that the steam exhaust of the utility model absorbs partial structure diagram
Fig. 3 is the silencing means structural schematic diagram of the utility model
In attached drawing, 1- cyclic water tank, 2- water circulating pump, 3- drain tank, 31- drainage pump, 4- water-blaster, 5- steam exhaust import,
6- mixing chamber, 7- pawl nail, the shockproof noise reduction protective layer of 8-, 81- shakeproof layer, 82- noise reduction layer, 83- insulating layer, 84- erosion resistant coating, 9- wave
Shape expansion joint, 10- silencing means, 101- filter plate, 102-SS304 stainless steel strip, 11- heat exchanger, 12- oxygen-eliminating device, N1- circulation
Water, N2- steam exhaust, N3- high temperature mixed liquor, N4- desalted water, N5- high temperature desalted water, N6- low-temperature mixed liquid, PG- vacuum table, TI-
Thermometer.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
The utility model provides a kind of steam exhaust recovering device as shown in Figure 1, recirculated water N1 passes through circulation from cyclic water tank 1
Water pump 2 is pumped into water-blaster 4, and steam exhaust N2 enters steam exhaust import 5 from oxygen-eliminating device 12 using negative pressure, then meets with recirculated water N1, and
High temperature mixed liquor N3 is thoroughly mixed to form in mixing chamber 6；Water circulating pump 2 arrives between water-blaster 4, oxygen-eliminating device 12 arrives steam exhaust import
Vacuum table PG is set on the connecting line between 5, monitors steam exhaust negative pressure value；Water-blaster 4, steam exhaust import 5 and mixing chamber 6 are equipped with
Pawl nail 7, increases stabilization of equipment performance, reduces vibration, and shockproof noise reduction protective layer 8 is arranged in outer layer, is followed successively by from inside to outside shockproof
Layer 81, noise reduction layer 82, insulating layer 83 and erosion resistant coating 84；The high temperature mixed liquor N3 bring temperature difference and kinetic energy can be set to what room temperature was installed
Standby, pipeline and flange adversely affect, therefore in order to make equipment even running, need to stabilize high temperature mixed liquor N3
Processing, high temperature mixed liquor N3 are flowed out from mixing chamber 6, are entered corrugated-type expansion joint 9 by pipeline, are eliminated thermal expansion and stress influence
Afterwards, enter silencing means 10 by pipeline, reduce the impact of noise and vibration to equipment；Finally, treated high temperature mixed liquor
N3 enters heat exchanger 11 and desalted water N4 carries out heat exchange, and high temperature desalted water N5 enters oxygen-eliminating device 12 after heat exchange, after carrying out deoxygenation,
Boiler is supplied, high temperature mixed liquor N3 loses heat and forms low-temperature mixed liquid N6, returns to cyclic water tank 1 by pipeline, forms circulation
Water N1, so far the heat of steam exhaust N2 passes through a series of exchange, is all returned to oxygen-eliminating device 12；Recirculated water in cyclic water tank 1
It after N1 reaches certain liquid level, flows automatically in drain tank 3, after normal pressure deoxygenation, oxygen-eliminating device 12 is transported to by drainage pump 31, until
The moisture of this steam exhaust N2 passes through a series of processing, is all returned to oxygen-eliminating device 12；
The steam exhaust of the utility model absorbs the structural schematic diagram of part as shown in Fig. 2, water-blaster 4 is set with 6 level of mixing chamber
It sets, 4 face mixing chamber 6 of water-blaster, steam exhaust import 5 is perpendicular to the horizontal line where water-blaster 4 and mixing chamber 6, and and jetting
Device 4 and mixing chamber 6 communicate, and guarantee that steam exhaust N2 comes into full contact with recirculated water N1, mixes.
The silencing means structural schematic diagram of the utility model is as shown in figure 3, filter plate is arranged in the both ends of silencing means 10
101, central space fills SS304 stainless steel strip 102, and high temperature mixed liquor N3 enters before silencing means 10 by 101 mistake of filter plate
Filter, impurity can be filtered out, and prevent impurity from blocking packing material, while filter plate 101 prevents packing material in high temperature mixed liquor
Under the drive of N3, silencing means 10 is left.
Claims (9)
1. a kind of steam exhaust recovering device, including water tank, water pump, water-blaster and heat exchanger, which is characterized in that the steam exhaust recycling dress
The equipment set is sequentially connected as cyclic water tank, water circulating pump, water-blaster, steam exhaust import, mixing chamber, corrugated-type expansion joint, noise reduction dress
It sets, heat exchanger, oxygen-eliminating device, the top of the water-blaster and mixing chamber junction, the recirculated water is arranged in the steam exhaust import
The other side of case is sequentially connected drain tank, drainage pump and the oxygen-eliminating device.
2. a kind of steam exhaust recovering device according to claim 1, which is characterized in that each flange of the water-blaster and three
The distance between logical to lengthen, the water-blaster, steam exhaust import and mixing chamber are welded with pawl nail.
3. a kind of steam exhaust recovering device according to claim 1, which is characterized in that the water-blaster, steam exhaust import and mixed
It closes and is equipped with shockproof noise reduction protective layer on the outside of chamber, the shockproof noise reduction protective layer is followed successively by shakeproof layer, noise reduction layer, heat preservation from inside to outside
Layer and erosion resistant coating.
4. a kind of steam exhaust recovering device according to claim 3, which is characterized in that the shakeproof layer is in the jetting
The external surrounding of device, steam exhaust import and mixing chamber surrounds SS304 stainless steel plate, the joints cement inside the stainless steel plate and
At.
5. a kind of steam exhaust recovering device according to claim 3, which is characterized in that the outside of the shakeproof layer is noise reduction
Layer, the noise reduction layer wrap up shakeproof layer using acoustical foam board.
6. a kind of steam exhaust recovering device according to claim 3, which is characterized in that the outside of the noise reduction layer is heat preservation
Layer, the outside of the insulating layer are erosion resistant coating.
7. a kind of steam exhaust recovering device according to claim 1, which is characterized in that the oxygen-eliminating device to the steam exhaust import
Between, on the water circulating pump to the connecting line between the water-blaster vacuum table is installed.
8. a kind of steam exhaust recovering device according to claim 1, which is characterized in that there is screw thread on the corrugated-type expansion joint surface
And there is flexibility, it can be skid structure with dilatation, the corrugated-type expansion joint.
9. a kind of steam exhaust recovering device according to claim 1, which is characterized in that the two sides of the silencing means used
Filter plate blocks, and is loaded between the filter plate with SS304 stainless steel strip, and the loading of the stainless steel strip is 70-80%, described
The length of stainless steel strip is 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821634838.6U CN208967781U (en) | 2018-10-09 | 2018-10-09 | A kind of steam exhaust recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821634838.6U CN208967781U (en) | 2018-10-09 | 2018-10-09 | A kind of steam exhaust recovering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208967781U true CN208967781U (en) | 2019-06-11 |
Family
ID=66759171
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821634838.6U Expired - Fee Related CN208967781U (en) | 2018-10-09 | 2018-10-09 | A kind of steam exhaust recovering device |
Country Status (1)
| Country | Link |
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| CN (1) | CN208967781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657480A (en) * | 2019-09-30 | 2020-01-07 | 王建新 | Energy saver of heat exchange unit |
-
2018
- 2018-10-09 CN CN201821634838.6U patent/CN208967781U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657480A (en) * | 2019-09-30 | 2020-01-07 | 王建新 | Energy saver of heat exchange unit |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190611 Termination date: 20201009 |