CN208871596U - A kind of built-in deaerator deoxygenation element - Google Patents
A kind of built-in deaerator deoxygenation element Download PDFInfo
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- CN208871596U CN208871596U CN201821388945.5U CN201821388945U CN208871596U CN 208871596 U CN208871596 U CN 208871596U CN 201821388945 U CN201821388945 U CN 201821388945U CN 208871596 U CN208871596 U CN 208871596U
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- water inlet
- spray head
- built
- inlet pipe
- dished wheel
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Abstract
The utility model proposes a kind of built-in deaerator deoxygenation elements, including a shell, opening is provided on the shell, the opening is provided with water inlet pipe, a water inlet is provided on the water inlet pipe, described water inlet pipe one end is connected with a spray head, and the spray head and water inlet pipe are respectively arranged at the two sides of the shell, it is provided on the spray head several around the spray head and flexible dished wheel, channel is provided among the dished wheel, and the one end of the channel is connected to setting with spray head, the other end of dished wheel upper channel is provided with spout, the lug boss to dished wheel inner recess is provided on two sides up and down of the dished wheel.The utility model can remove the oxygen in water supply, and guarantee that oxygen content meets the requirements.
Description
Technical field
The utility model belongs to oxygen-eliminating device field, in particular to a kind of built-in deaerator deoxygenation element.
Background technique
The traditional oxygen-eliminating device applied in power plant, current China is all made of deoxygenation head and feed-tank two parts, and deoxygenation head is negative
Duty carries out heating deoxygenation to water inlet, and the function of feed-tank is the water that storage removes peroxide, and boiler of feeding uses.Traditional oxygen-eliminating device is according to removing
There are three types of pattern oxygen-eliminating devices for the relative axis and connection type of oxygen head and feed-tank: vertical list end socket oxygen-eliminating device, vertical double-seal head
Oxygen-eliminating device and horizontal double-seal head oxygen-eliminating device.Vertical list end socket oxygen-eliminating device is longer using the time in power plant, China, and quantity is also more.
To meet pressure balance requirement between the draining of deoxygenation head and deoxygenation head and feed-tank, this oxygen-eliminating device need to open up directly on feed-tank
The biggish hole of diameter, aperture are generally Ф 1600~Ф 2400mm, reach 0.4~0.8 times of feed-tank diameter, substantially exceed
Maximum allowable opening diameter specified in GB150-1998 " steel pressure vessel " and ASME " boiler and pressure vessel specification "
(0.33Do).The load of big circle cutting and deoxygenation head answers deoxygenation head and the feed-tank junction very high part of generation
Power and deformation.Find that the factor of stress concentration at this reaches 3.5~4.5 through measurement, hot stress has been more than Materials Yield Limit.
Cold and hot deflection is also very big at this.
Minhang Power Plant once deforms factory 125MW unit oxygen-eliminating device at saddle-shaped seam and carried out measurement, when measurement with
On the basis of hot shaping, notch distortion under occurring at this in cold conditions, sagging deflection reaches 20 millimeters, this deflection is with internal pressure
It increases and gradually decreases.Cold and hot deformation generates low circumferential stress alternation, since stress is big to form low all fatigues at this.It is right
For the oxygen-eliminating device of sliding pressure parameter operation, this low all fatigues are easy to crack shell.
One crackle for penetrating base material just once occurred for the oxygen-eliminating device of one 125MW unit of Beijing No.2 Heat & Power Plant, and length is about
6m reaches 2/3rds of deoxygenation head circumferential length.It is larger that big circle cutting not only generates deoxygenation head and feed-tank junction
Stress and deformation, and make within the scope of 120 ° of feed-tank bottom, stiffening ring junction and feed-tank corn of the saddle appearance height
Stressed zone, so that these positions, especially welded seam area easily crack.
Reconnaissance information shows all there is crackle in such oxygen-eliminating device in many power stations in China, and few then 10 items are how then thousands of
Item, crack depth is from 2~3 millimeters to through crack base material.Although the generation of these crackles is related with several factors, such as material choosing
It selects, structure design, welding procedure, operation operation etc., but from the point of view of intensive analysis, big circle cutting causes wide range of structures not
It is continuously the fundamental cause that oxygen-eliminating device cracks, so that the safe operation to oxygen-eliminating device brings hidden danger.If occurring due to crackle
Caused oxygen-eliminating device demolition accident, then can bring about great losses to people's life and national wealth.
In order to avoid the big circle cutting on feed-tank, some manufactories are proposed vertical double-seal head oxygen-eliminating device, by 4~
5 root canal roads connect deoxygenation head and feed-tank, replace a macropore with multiple apertures.But due to straight by deoxygenation head
The limitation of diameter, less than 2 times opening diameters of small pitch of holes, has equally seriously undermined the strength and stiffness of feed-tank.Stress test table
It is bright, feed-tank surface stress still above material yield stress.
Machine set technology is introduced in the study of some manufactories, China, and horizontal type deaerator is gradually used in large-sized unit.This structure
Pattern makes opening diameter on feed-tank be reduced to Ф 600~Ф 800mm, and aperture spacing is not limited by deoxygenation head diameter, reduces
The deflection and local stress of tapping, but the deoxygenation head load of horizontal type deaerator is still by two supports as collection
Middle load action is on the weaker section of feed-tank span centre, so that within the scope of 120 ° of these section-bottoms, with vertical deoxygenation
Device feed-tank bottom is the same, generates the region of high stress and causes crackle.In addition, the spraying and water drenching distance of horizontal type deaerator is by deoxygenation
The limitation of head diameter, heat transfer area and mass transfer time are smaller than vertical type deaerator, heating temperature rise cannot be increased substantially, according to foreign countries
Data introduction, horizontal type deaerator heating temperature rise are generally 30~40 DEG C, and when stopping 1~2 low-pressure heater of labour, water outlet contains
Oxygen amount is with regard to unqualified.The needs of steam power plant cannot be can not meet directly into low temperature make-up water.
Therefore, it in view of above scheme in actual fabrication and in place of implementing using upper missing, and corrected, improved, together
When in line with the spirit and theory asked, and by the knowledge of profession, the auxiliary of experience, and after multi-party clever thought, test, just found
The utility model out, spy provide a kind of built-in deaerator deoxygenation element again, can remove the oxygen in water supply, and guarantee oxygen-containing
Amount meets the requirements.
Summary of the invention
The utility model proposes a kind of built-in deaerator deoxygenation elements, solve the problems of the prior art.
The technical solution of the utility model is achieved in that built-in deaerator deoxygenation element, including a shell, described
Opening is provided on shell, the opening is provided with water inlet pipe, and a water inlet, the water inlet pipe are provided on the water inlet pipe
One end is connected with a spray head, and the spray head and water inlet pipe are respectively arranged at the two sides of the shell, are provided on the spray head
It is several that channel, and the one end of the channel and spray are provided among the spray head and flexible dished wheel, the dished wheel
Head connection setting, the other end of dished wheel upper channel are provided with spout, are provided on two sides up and down of the dished wheel
To the lug boss of dished wheel inner recess.
As a preferred embodiment, the dished wheel includes positioned at first disk body at top and positioned at bottom
Second disk body forms the channel between the first disk body and the second disk body.
As a preferred embodiment, being provided with connector on the inner wall of the water inlet pipe, it is provided on the connector
The end outer of through-hole, through-hole and the spray head that the end of the spray head passes through the connector protrudes outward and the connector card
Only.
As a preferred embodiment, the quantity of the dished wheel is 9.
As a preferred embodiment, being additionally provided with several reinforcing rings on the spray head.
As a preferred embodiment, the quantity of the reinforcing ring is 4.
As a preferred embodiment, every 3 dished wheels are set between 2 reinforcing rings.
As a preferred embodiment, the spray head include the first segment of variable diameter and with uniform inner and outer diameter
Two sections, and one end of first segment and the fixed setting of one end of second segment.
As a preferred embodiment, the diameter of the first segment is by close to water inlet pipe one end to separate water inlet pipe one
Successively decrease at end.
As a preferred embodiment, the remote water inlet pipe setting closed at one end of the second segment.
After above-mentioned technical proposal, the beneficial effects of the utility model are:
1, nozzle and water inlet pipe are engaged using connector, while realizing fixed, avoids the generation of drainage；
2, flexible dished wheel is set, and is provided with channel among dished wheel, lug boss is provided on dished wheel,
Turning on or off for channel is realized automatically according to the size of hydraulic pressure；
3, so that water flow is formed moisture film ring using the spout of dished wheel access port, make the oxygen in moisture in the effect of steam
Lower sufficiently evolution, realizes height deoxygenation；
4, it is provided with reinforcing ring between dished wheel, can guarantees the secured of dished wheel, and dish can be increased from side
Dynamics needed for the deformation of disk.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the utility model deoxygenation element；
Fig. 2 is the open state structural schematic diagram of spout；
Fig. 3 is the closed state structural schematic diagram of spout.
In figure, 1- water inlet；2- shell；3- moisture film ring；4- reinforcing ring；5- nozzle；The first disk body of 6-；7- lug boss；8-
Spout；10- water inlet pipe；11- connector；12- first segment；13- second segment；The channel 14-；The second disk body of 15-.
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, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, this built-in deaerator deoxygenation element, including a shell 2, it is provided with opening on shell 2, is open
Place is provided with water inlet pipe 10, is provided with a water inlet 1 on water inlet pipe 10, and 10 one end of water inlet pipe is connected with a spray head, and spray head and
Water inlet pipe 10 is respectively arranged at the two sides of shell 2, is provided on spray head several around the spray head and flexible dished wheel, dish
Channel 14 is provided among shape disk, and 14 one end of channel is connected to setting with spray head, the other end of dished wheel upper channel 14 is provided with
Spout 8 is provided with the lug boss 7 to dished wheel inner recess on two sides up and down of dished wheel.The water inlet of water inlet pipe 10
Mouth 1 is connected with water tank, and oxygenated water is contained in water tank, and spray head is located in boiler, has steam in boiler.
There is elasticity due to dished wheel, after water inlet pipe 10 entrance of the water inlet by being located at the top of shell 2, to being located at
Hydraulic pressure is formed inside the spray head of bottom, makes to generate between the lug boss 7 on the inside of dished wheel and dehisce, and forms the section of annular together,
Spout 8 sprays at the outer rim that water inlet passes through dished wheel, forms water membrane ring 3, when flow of inlet water is reduced, intake pressure drop
Low, under the effect of elasticity, the ring section between lug boss 7 reduces dished wheel, and the amount of water sprayed of spray head is reduced accordingly, and is not being had
When having into water, closed between lug boss 7, spray head stops water spray, when this element works normally, the steam of heating from bottom to top plus
Hot water film ring 3 sufficiently removes the oxygen in water removal, and the exhaust outlet row Xiang great Qi of the oxygen self-spray both sides of head escaped (does not show in figure
Out).
Dished wheel includes the second disk body 15 positioned at first disk body 6 at top and positioned at bottom, the first disk body 6 and second
Channel 14 is formed between disk body 15.Dished wheel is arranged in such a way that two disk bodies cooperate, can be convenient according to requiring to adjust
The size in channel 14 and lug boss 7 between two disk bodies.And preferred, lug boss 7 is hemispherical protuberances.
It is provided with connector 11 on the inner wall of water inlet pipe 10, through-hole is provided on connector 11, the end of spray head passes through connector 11
Through-hole and spray head end outer protrude outward and connector 11 engage.In the way of locking, by spray head and water inlet pipe 10 and
It is fixed up between shell 2, avoids it because there is the case where leak under the action of intake pressure.
The quantity of dished wheel is 9.Several reinforcing rings 4 are additionally provided on spray head.The quantity of reinforcing ring 4 is 4.Every 3
Dished wheel is set between 2 reinforcing rings 4.Wherein dished wheel is made of stainless steel or other metal materials, is had certain
Elasticity while, also meet and contact the condition that will not be got rusty with water for a long time.
Spray head includes the first segment 12 of variable diameter and the second segment 13 with uniform inner and outer diameter, and one end of first segment 12 and
One end of second segment 13 is fixedly installed.The diameter of first segment 12 close to 10 one end of water inlet pipe to far from 10 one end of water inlet pipe by passing
Subtract.The setting closed at one end of remote water inlet pipe 10 of second segment 13.
The working principle of the built-in deaerator deoxygenation element is: by the way of connector 11 by nozzle 5 and shell 2 and into
Water pipe 10 is fixedly installed, and is intake by the water inlet 1 on water inlet pipe 10, to hydraulic pressure is formed inside the spray head for being located at bottom, due to the
One disk body 6 and the second disk body 15 have elasticity, and hydraulic pressure, which makes to generate between the lug boss 7 on the inside of dished wheel, dehisces, and form one of ring
The section of shape, water inlet are sprayed by spout 8 at the outer rim between the first disk body 6 and the second disk body 15, form water membrane ring 3,
When flow of inlet water reduce when, intake pressure reduce, the first disk body 6 and the second disk body 15 under the effect of elasticity, between lug boss 7
Ring section reduces, and the amount of water sprayed of spray head is reduced accordingly, and when not intaking, it is closed between lug boss 7, spray head stops spray
Water, when this element works normally, the heating moisture film ring 3 of the steam of heating from bottom to top sufficiently removes the oxygen in water removal, and escapes
Oxygen self-spray both sides of head exhaust outlet arrange Xiang great Qi.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of built-in deaerator deoxygenation element, which is characterized in that including a shell, opening, institute are provided on the shell
It states opening and is provided with water inlet pipe, a water inlet is provided on the water inlet pipe, described water inlet pipe one end is connected with a spray head, and
The spray head and water inlet pipe are respectively arranged at the two sides of the shell, and several circular spray heads are provided on the spray head and are had
The dished wheel of elasticity, is provided with channel among the dished wheel, and the one end of the channel is connected to setting with spray head, logical on dished wheel
The other end in road is provided with spout, and the protrusion to dished wheel inner recess is provided on two sides up and down of the dished wheel
Portion.
2. built-in deaerator deoxygenation element according to claim 1, which is characterized in that the dished wheel includes being located at top
First disk body in portion and the second disk body positioned at bottom, form the channel between the first disk body and the second disk body.
3. built-in deaerator deoxygenation element according to claim 2, which is characterized in that set on the inner wall of the water inlet pipe
It is equipped with connector, through-hole is provided on the connector, the end of the spray head passes through the through-hole of the connector and the end of the spray head
Portion outer is protruded outward to be engaged with the connector.
4. built-in deaerator deoxygenation element according to claim 1, which is characterized in that the quantity of the dished wheel is 9
It is a.
5. built-in deaerator deoxygenation element according to claim 4, which is characterized in that if being additionally provided on the spray head
Dry reinforcing ring.
6. built-in deaerator deoxygenation element according to claim 5, which is characterized in that the quantity of the reinforcing ring is 4
It is a.
7. built-in deaerator deoxygenation element according to claim 6, which is characterized in that every 3 dished wheel settings
Between 2 reinforcing rings.
8. built-in deaerator deoxygenation element according to claim 7, which is characterized in that the spray head includes the of variable diameter
One section and the second segment with uniform inner and outer diameter, and one end of first segment and the fixed setting of one end of second segment.
9. built-in deaerator deoxygenation element according to claim 8, which is characterized in that the diameter of the first segment is by leaning on
Successively decrease to far from water inlet pipe one end nearly water inlet pipe one end.
10. built-in deaerator deoxygenation element according to claim 9, which is characterized in that the remote water inlet of the second segment
Manage setting closed at one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821388945.5U CN208871596U (en) | 2018-08-27 | 2018-08-27 | A kind of built-in deaerator deoxygenation element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821388945.5U CN208871596U (en) | 2018-08-27 | 2018-08-27 | A kind of built-in deaerator deoxygenation element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208871596U true CN208871596U (en) | 2019-05-17 |
Family
ID=66465849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821388945.5U Expired - Fee Related CN208871596U (en) | 2018-08-27 | 2018-08-27 | A kind of built-in deaerator deoxygenation element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208871596U (en) |
-
2018
- 2018-08-27 CN CN201821388945.5U patent/CN208871596U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190517 Termination date: 20210827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |