CN201803643U - Steam blowing-washing system of utility-type unit - Google Patents
Steam blowing-washing system of utility-type unit Download PDFInfo
- Publication number
- CN201803643U CN201803643U CN2010205476628U CN201020547662U CN201803643U CN 201803643 U CN201803643 U CN 201803643U CN 2010205476628 U CN2010205476628 U CN 2010205476628U CN 201020547662 U CN201020547662 U CN 201020547662U CN 201803643 U CN201803643 U CN 201803643U
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- CN
- China
- Prior art keywords
- superheater
- reheater
- antipriming pipe
- granulating device
- steam
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Abstract
The utility model discloses a steam blowing-washing system of a utility-type unit. The system comprises a superheater, a particle collecting device and a reheater, wherein the particle collecting device is arranged between the superheater and the reheater and comprises an outer barrel and a perforated tube; the perforated tube is fixed in the outer barrel; the front end of the perforated tube is provided with a clapboard for sealing the front end of the perforated tube; a blind is arranged between the rear end of the perforated tube and the outer barrel; the front end of the perforated tube is provided with a plurality of diversion holes, and the rear end is provided with an opening; the side wall of the outer barrel between the blind and the diversion holes is provided with a dirt collecting box; and the lower part of the dirt collecting box is provided with a flange. For the system, as the particle collecting device is arranged between the superheater and the reheater, impurities cleared from the superheater can be collected by the particle collecting device and then discharged by the dirt collecting box and the flange, thus being capable of preventing the impurities in the superheater from being washed to the reheater to cause secondary pollution; and the steam passing through the particle collecting device can be used for continuing to wash the reheater, thus effectively improving the blowing-washing efficiency.
Description
Technical field
The utility model relates to a kind of oxygenerator, specifically is a kind of large-scale unit steam purge system.
Background technology
The large power plant steam turbine has very high requirement to the Boiler Steam quality, because some iron scales, iron filings, welding slag and other mechanical foreign material can be left in aspects such as manufacturing, transportation, storage and installation in the pipeline of vapour systems such as boiler superheater, reheater.These impurity exist huge harm to the unit of operation, before a whole set of startup of Steam Turbine, need steam generator system is carried out steam blowing, with the steam turbine after guaranteeing to put into operation and the safety of auxiliary equipment, improve the security and the economy of unit, and improve the steam quality of run duration.
Large-scale unit boiler divides superheater system and reheater system, during boiler blow piping, adopt a step blowpipe method, pass through main steam line to the superheater import, by entering atmosphere by reheater outlet conduit to muffler behind the superheater from the steam of boiler superheater outlet.
But, an existing step blowpipe method is behind steam process superheater, processing is not collected and discharged to the iron sheet of its assembly, iron filings, welding slag and other mechanical foreign material, cause being brought in the reheater by steam again at the foreign material that leading portion is assembled, need repeatedly steam blowing, thereby cause the performance of steam blowing not high, waste energy; And the foreign material that enter in the reheater may bring potential safety hazard.
Summary of the invention
The utility model provides a kind of large-scale unit steam purge system, and the impurity of removing in the superheater tube can be collected by granulating device and discharge from blow-off pipe, can avoid impurity in the superheater tube to be flushed to and form secondary pollution in the reheater tube, effectively improves to purge usefulness.
A kind of large-scale unit steam purge system, comprise superheater, granulating device and reheater, granulating device is arranged between superheater and the reheater, described granulating device comprises urceolus, antipriming pipe, wherein antipriming pipe is fixed on urceolus inside, the front end of antipriming pipe is provided with the dividing plate with the sealing of antipriming pipe front end, be provided with closure plate between the rear end of antipriming pipe and the urceolus, the front end of antipriming pipe is provided with a plurality of tap holes, the rear end of antipriming pipe is provided with opening, be provided with dirt collection bin on the outer tube side wall between closure plate and the tap hole, the dirt collection bin bottom is provided with flange.
The utility model is arranged between superheater and the reheater owing to granulating device, the impurity of removing in the superheater can be collected by granulating device, discharge by dirt collection bin and flange then, can avoid the impurity in the superheater to be flushed to reheater formation secondary pollution like this, steam through granulating device can continue to wash reheater, effectively improves to purge usefulness.
Description of drawings
Fig. 1 is the longitudinal profile structural representation of the large-scale unit steam purge of the utility model system;
Fig. 2 be among Fig. 1 A-A to view.
Among the figure: 10-superheater, 20-granulating device, 30-reheater, 21-urceolus, 22-antipriming pipe, the 23-dividing plate, 24-tap hole, 25-reinforcement, 26-closure plate, 27-dirt collection bin, the 28-flange, 29-blow-off pipe, 40-superheater steam outlet pipe, 50-reheater steam inlet tube, 60-sewage door.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described.
Figure 1 shows that the structural representation of the large-scale unit steam purge of the utility model system, described large-scale unit steam purge system comprises superheater 10, granulating device 20 and reheater 30, granulating device 20 is arranged between superheater 10 and the reheater 30, concrete, superheater 10 is connected with the front end of granulating device 20 by superheater steam outlet pipe 40, and reheater 30 is connected with the rear end of granulating device 20 by reheater steam inlet tube 50.
Described granulating device 20 comprises urceolus 21, antipriming pipe 22, and wherein antipriming pipe 22 is fixed on urceolus 21 inside, and the front end of antipriming pipe 22 is provided with the dividing plate 23 with the sealing of antipriming pipe 22 front ends, is provided with closure plate 26 (as shown in Figure 2) between the rear end of antipriming pipe 22 and the urceolus 21.The front end of antipriming pipe 22 is provided with a plurality of tap holes 24, and the rear end of antipriming pipe 22 is provided with opening.Be provided with dirt collection bin 27 on urceolus 21 sidewalls between closure plate 26 and the tap hole 24, dirt collection bin 27 bottoms are provided with flange 28.In flange 28 bottoms blow-off pipe 29 and sewage door 60 can be set also.
Wherein, dividing plate 23 can be pyramidal structure, be provided with a plurality of reinforcements 23 at urceolus 21 front ends, concrete number can be provided with according to actual needs, for example be provided with 4, be evenly arranged between the dividing plate 23 of urceolus 21 front ends and antipriming pipe 22, thickness can be 8mm, material adopts No. 10 steel, with urceolus 21 and antipriming pipe 22 welding.
Because granulating device 20 is arranged between superheater 10 and the reheater 30, can be collected by granulating device 20 from the superheater 10 interior impurity of removing, discharge by dirt collection bin 27 and flange 28 then, can avoid the impurity in the superheater 10 to be flushed to reheater 30 formation secondary pollutions like this, steam through granulating device 20 can continue to wash reheater, effectively improves to purge usefulness.
Through on-the-spot test, the resistance of granulating device 20≤0.08Mpa collection grain is effective, and deslagging is effective; Because the effect of granulating device 20 makes the washing pipe number of times reduce by 25%, the washing pipe by using steam cost reduces by 20%, every index all reaches original designing requirement, can use the large-scale unit steam purge of the utility model system in overcritical and ultra supercritical 600MW and above large-scale unit safety, high-quality.
The above; it only is the specific embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly belong to those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (5)
1. one kind large-scale unit steam purge system, it is characterized in that: comprise superheater (10), granulating device (20) and reheater (30), granulating device (20) is arranged between superheater (10) and the reheater (30), described granulating device (20) comprises urceolus (21), antipriming pipe (22), wherein antipriming pipe (22) is fixed on urceolus (21) inside, the front end of antipriming pipe (22) is provided with the dividing plate (23) with the sealing of antipriming pipe (22) front end, be provided with closure plate (26) between the rear end of antipriming pipe (22) and the urceolus (21), the front end of antipriming pipe (22) is provided with a plurality of tap holes (24), the rear end of antipriming pipe (22) is provided with opening, be provided with dirt collection bin (27) on urceolus (21) sidewall between closure plate (26) and the tap hole (24), dirt collection bin (27) bottom is provided with flange (28).
2. large-scale unit steam purge as claimed in claim 1 system, it is characterized in that: superheater (10) is connected with the front end of granulating device (20) by superheater steam outlet pipe (40), and reheater (30) is connected with the rear end of granulating device (20) by reheater steam inlet tube (50).
3. large-scale unit steam purge as claimed in claim 1 system, it is characterized in that: flange (28) bottom is provided with blow-off pipe (29) and sewage door (60).
4. large-scale unit steam purge as claimed in claim 1 system, it is characterized in that: dividing plate (23) is pyramidal structure.
5. large-scale unit steam purge as claimed in claim 1 system, it is characterized in that: urceolus (21) front end is provided with a plurality of reinforcements (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205476628U CN201803643U (en) | 2010-09-29 | 2010-09-29 | Steam blowing-washing system of utility-type unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205476628U CN201803643U (en) | 2010-09-29 | 2010-09-29 | Steam blowing-washing system of utility-type unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201803643U true CN201803643U (en) | 2011-04-20 |
Family
ID=43873142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205476628U Expired - Lifetime CN201803643U (en) | 2010-09-29 | 2010-09-29 | Steam blowing-washing system of utility-type unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201803643U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777884A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | Washing method of power station boiler temperature reducing water system and washing pipeline connection structure |
| CN107990302A (en) * | 2017-12-21 | 2018-05-04 | 华电电力科学研究院 | A kind of device and method for preventing superheater and the blocking of reheater oxide skin |
| CN108654217A (en) * | 2018-07-04 | 2018-10-16 | 西安热工研究院有限公司 | A kind of granulating device and its working method suitable for enclosed purging |
-
2010
- 2010-09-29 CN CN2010205476628U patent/CN201803643U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777884A (en) * | 2012-08-06 | 2012-11-14 | 贵州电力试验研究院 | Washing method of power station boiler temperature reducing water system and washing pipeline connection structure |
| CN107990302A (en) * | 2017-12-21 | 2018-05-04 | 华电电力科学研究院 | A kind of device and method for preventing superheater and the blocking of reheater oxide skin |
| CN108654217A (en) * | 2018-07-04 | 2018-10-16 | 西安热工研究院有限公司 | A kind of granulating device and its working method suitable for enclosed purging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |
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| CX01 | Expiry of patent term |