CN1928420A - Method for reducing steam temperature in steam pipe - Google Patents
Method for reducing steam temperature in steam pipe Download PDFInfo
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- CN1928420A CN1928420A CN 200610085202 CN200610085202A CN1928420A CN 1928420 A CN1928420 A CN 1928420A CN 200610085202 CN200610085202 CN 200610085202 CN 200610085202 A CN200610085202 A CN 200610085202A CN 1928420 A CN1928420 A CN 1928420A
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- steam
- cooling water
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- pipe
- tube
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Abstract
The invention relates to a method decreasing steam temperature in steam pipe. After cooling water and steam, which are delivered into steam pipe in the same time, are mixed and atomized, they are sprayed into steam pipe; the pressure of steam delivered into steam pipe is at least 0.05Mpa more than the pressure of cooling water and the weight of steam is 1-5% of cooling water; the mixture of steam and cooling water is sprayed into steam pipe from the middle of steam pipe. Steam is delivered to the nozzle set in steam pipe by separate pipe; the pressure of steam after depressurization is less than the pressure of cooling water in nozzle hole so that cooling water is absorbed to nozzle hole and mixed with steam from separate pipe delivering cooling water, which is connected to nozzle; mixture of steam and cooling water after mixing is sprayed in steam pipe. By the invention, cooling water is sprayed fully and the atomization performance is good; it can provide steam with suitable temperature, which comes up to the usage condition, to department using steam and energy is saved.
Description
Technical field:
The present invention relates to reduce the method for vapor (steam) temperature, particularly the method for the reduction vapor (steam) temperature on pipeline, used of steam supply department with vapour department delivering vapor.
Background technique:
At present, the department of steam is used in electric power, petrochemical industry, food, papermaking etc., because of it uses the operating mode difference of the concrete equipment of steam, numerical value to the temperature of steam requires also different, when so steam supply department uses the department steam supply of steam to these, must be to the steam processing of lowering the temperature, adopt in steam pipework water spray to realize the reduction of vapor (steam) temperature usually.In steam pipework, spray water and finish by atomizer nozzle, atomizer nozzle is one of critical component in the steam cooling decompressor, the outlet temperature of steam cooling decompressor is controlled by atomizer nozzle, the quality of atomizer nozzle performance and the quality of quality directly affect the workmanship and the economic benefit of steam cooling decompressor, and poor performance, low-quality nozzle can cause a large amount of energy wastes.Atomizer nozzle as present domestic use all is an atomizing nozzle, its structure is: comprise bearing and shower, shower is fixed on the bearing, bearing is fixed on the tube wall outside of steam tube, the structure of shower is for processing some apertures on the tube wall of an elongated water pipe, shower inserts in the steam tube, there be the aperture of water on shower of certain pressure to be sprayed directly on in the steam in the steam tube, thereby reduce the temperature of steam, the atomizing effect of this atomizing nozzle is poor, the water droplet volume of ejection is big, even have the part water droplet and in steam, also be not able to do in time to evaporate fully on the inwall of just having fallen steam tube, on the one hand, must send into sewerage or water tank to these water of also not bringing into play heat-absorbing action fully to it by drain water piping and drain valve, on the other hand, because of the vapor (steam) temperature in the steam tube does not also drop to the required temperature with vapour unit, must strengthen the cooling water input amount, this will certainly further increase hydrophobic workload, causes bigger energy waste.
Summary of the invention:
The object of the present invention is to provide that a kind of atomizing effect is good, energy saving and can effectively reduce the method for vapor (steam) temperature in the steam tube.
Solution of the present invention is: in steam tube, send into cooling water, in steam tube, send into simultaneously steam, cooling water and vapor mixing and be atomized after, spray in the steam tube.
The force value of sending into the steam in the steam tube is at least than the high 0.05Mpa of force value of cooling water.
The weight of sending into the steam in the steam tube is the 1-5% of the weight of cooling water.
Cooling water after being atomized and steam mixture spray into the steam tube from the middle part of steam tube.
Steam is sent in the nozzle that is located in the steam tube through pipeline independently, in the nozzle bore of nozzle, steam is handled through step-down and is made the force value of its force value less than cooling water, thereby be drawn in the nozzle bore and vapor mixing the independent tubes with the conveying cooling water of cooling water on being connected nozzle, the mixture of mixed steam and cooling water sprays in the steam tube.
Reduce vapor (steam) temperature in the steam tube by in steam tube, sending into steam, as if counterintuitive, it is impossible and mysterious thing, people generally are unthinkable, but the fact is after adopting the present invention, and cooling water is fully atomized, and atomizing effect is good, can provide the steam that meets service condition to the department that uses steam, save the energy with suitable temperature.
Description of drawings:
Fig. 1 is the structural representation of the steam atomization nozzle of enforcement the method for the invention;
Fig. 2 is the I portion enlarged view of the steam atomization nozzle of enforcement the method for the invention;
Fig. 3 is the II portion enlarged view of the steam atomization nozzle of enforcement the method for the invention;
Fig. 4 is the A-A sectional drawing of the steam atomization nozzle of enforcement the method for the invention;
Fig. 5 is the B-B sectional view of the steam atomization nozzle of enforcement the method for the invention.
Among the figure: the 1--flange; The 2--control valve; The 3--stop valve; The 4--safety check; The 5--control valve; The 6--flange; The 7--annular water tank; The inner chamber of 8--nozzle; The 9--hole; The 10--nozzle bore; The inner chamber of 11--intake pipe; The inner chamber of 12--steam inlet pipe; The 13--base; The 14--nozzle bearing; The 15--steam inlet pipe; The 16--snap ring; The 17--steam tube; The 18--intake pipe; The 19--nozzle; The 20--nozzle cage; The 21--asbestos packing; The 22--polytetrafluoroethylene packing; The 23--asbestos packing; 24--admission chamber; The 25--water-inlet cavity.
Embodiment:
The structure of implementing the steam atomization nozzle of the method for the invention is:
Contain intake pipe 18, nozzle bearing 14, intake pipe 18 flexibly connects with nozzle bearing 14, nozzle bearing 14 is fixed on the base 13, base 13 is fixed on the outer wall of steam tube 17, flange 6 is fixed on the nozzle bearing 14, intake pipe 18 flexibly connects with the water-inlet cavity 25 of flange 6, outer wall and flange 6 at intake pipe 18, two circle polytetrafluoroethylene packings 22 and three circle asbestos packings 23 have been filled in the nozzle bearing 14 formed filler chamber, also comprise steam inlet pipe 15, on the outer wall of steam inlet pipe 15 annular groove is arranged, in annular groove, snap in snap ring 16, fixed flange 1 on the nozzle bearing 14, outer wall and flange 1 at steam inlet pipe 15, six circle asbestos packings 21 have been filled in the nozzle bearing 14 formed filler chamber, flange 1 is fixed on snap ring 16 on the shoulder lattice of nozzle bearing 14 of filler chamber bottom by six circle asbestos packings 21, steam inlet pipe 15 is connected with the admission chamber 24 of flange 1, fixedly connected with an end of nozzle 19 in the lower end of steam inlet pipe 15, the other end of nozzle 19 has nozzle bore 10, there is annular water tank 7 end of nozzle 19, annular water tank 79 interlinks with nozzle bore 10 through the hole, nozzle cage 20 has also been installed in the end of nozzle 19, the lower end of intake pipe 18 is fixed on the nozzle cage 20, and the inner chamber 11 and the annular water tank 7 of intake pipe 18 interlink.
Because temperature differs greatly between steam inlet pipe 15 and the intake pipe 18, the swell increment that produces in the process of work is also different, links to each other with intake pipe 18 owing to steam inlet pipe 15 again, so, steam inlet pipe 15 can produce bending deflection with intake pipe 18, and tubing also can damage because of repeatedly the distortion generation is tired.The steam inlet pipe 15 of present embodiment and intake pipe 18 have solved this problem effectively with the Placement of nozzle bearing 14.Because, outer wall and flange 1 at steam inlet pipe 15, in the nozzle bearing 14 formed filler chamber, bigger above the suffered impacting force of six circle asbestos packings 21 than following, the impacting force minimum that the asbestos packing 21 of the bottom is suffered, also has the certain deformation surplus, that is to say, the asbestos packing 21 of the bottom has certain displacement space, so, when thermal expansion takes place in steam inlet pipe 15, even when nozzle 19 and intake pipe 18 can not produce the expansion displacement that displacement offsets steam inlet pipe 15, a spot of displacement was upwards done in the also compressible asbestos packing 21 of snap ring 16 that is fixed on the steam inlet pipe 15, be discharged into and produce thermal stress when thermal expansions take place steam pipe 15.Simultaneously, in the outer wall of intake pipe 18 and flange 6, nozzle bearing 14 formed filler chamber, two circle polytetrafluoroethylene packings 22 and three circle asbestos packings 23 have been filled, make intake pipe 18 suffered friction reduce 2/3rds, intake pipe 18 can be expanded and corresponding a spot of free displacement, the generation thermal stress in the time of being discharged into steam pipe 15 generation thermal expansions equally done with steam inlet pipe 15.
It is as follows to adopt above-mentioned steam atomization nozzle to implement the procedure of vapor (steam) temperature in the reduction steam pipework provided by the present invention:
The high pressure steam that steam supply side provides is adjusted to required force value through control valve 2, make the force value high 0.1Mpa of the force value of steam, then enter the admission chamber 24 of flange 1, the inner chamber 12 of steam inlet pipe 15, arrive the inner chamber 8 of nozzle 19 than cooling water.Cooling water enters the water-inlet cavity 25 of flange 6 by stop valve 3, safety check 4 and control valve 5, enters the annular water tank 7 of the end of nozzle 19 again through the inner chamber 11 of intake pipe 18, and control valve 5 is for the water yield of controlling the water-inlet cavity 25 that enters flange 6 and pressure.The weight of steam be cooling water weight 3%.Steam is by nozzle bore 10 time, the flow velocity of steam increases, the pressure of steam descends to some extent, when the force value of steam drops to the force value of cooling water when following, cooling water in the annular water tank 7 is drawn onto in the nozzle bore 10 by hole 9, the steam water interface that formation is made up of steam and cooling water, steam water interface spray from nozzle bore 10.Nozzle 19 and steam tube 17 coaxial lines.When steam water interface enters in the steam tube 17 that vapor pressure is lower than 0.5Mpa, the volume of steam expands rapidly, and the water droplet around the nozzle bore 10 is scraped, and forms spray, the steam water interface of steam of coming from reduction valve and ejection from nozzle bore 10 mixes mutually, because globule volume is little, big with the steam area of contact, heat exchanging process is fast, water becomes steam soon, reach the purpose that reduces vapor (steam) temperature, cooling water has also become steam simultaneously, has increased steam flow.
Claims (5)
1, reduce the method for vapor (steam) temperature in the steam pipework, in steam tube, send into cooling water, it is characterized in that in steam tube, sending into simultaneously steam, cooling water and vapor mixing and be atomized after, spray in the steam tube.
2, the method for vapor (steam) temperature in the reduction steam pipework according to claim 1, the force value that it is characterized in that sending into the steam in the steam tube are at least than the high 0.05Mpa of force value of cooling water.
3, the method for vapor (steam) temperature in the reduction steam pipework according to claim 2, the weight that it is characterized in that sending into the steam in the steam tube is the 1-5% of the weight of cooling water.
4, the method for vapor (steam) temperature in the reduction steam pipework according to claim 3, cooling water after it is characterized in that being atomized and steam mixture spray into the steam tube from the middle part of steam tube.
5, the method for vapor (steam) temperature in the reduction steam pipework according to claim 4, it is characterized in that steam sends in the nozzle that is located in the steam tube through pipeline independently, in the nozzle bore of nozzle, steam is handled through step-down and is made the force value of its force value less than cooling water, thereby be drawn in the nozzle bore and vapor mixing the independent tubes with the conveying cooling water of cooling water on being connected nozzle, the mixture of mixed steam and cooling water sprays in the steam tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610085202 CN1928420A (en) | 2006-06-02 | 2006-06-02 | Method for reducing steam temperature in steam pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610085202 CN1928420A (en) | 2006-06-02 | 2006-06-02 | Method for reducing steam temperature in steam pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1928420A true CN1928420A (en) | 2007-03-14 |
Family
ID=37858495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610085202 Pending CN1928420A (en) | 2006-06-02 | 2006-06-02 | Method for reducing steam temperature in steam pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1928420A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113710958A (en) * | 2019-04-17 | 2021-11-26 | 费希尔控制产品国际有限公司 | Desuperheater and spray nozzle thereof |
-
2006
- 2006-06-02 CN CN 200610085202 patent/CN1928420A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113710958A (en) * | 2019-04-17 | 2021-11-26 | 费希尔控制产品国际有限公司 | Desuperheater and spray nozzle thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |