CN102650425B - Composite bushing type water spraying desuperheater - Google Patents
Composite bushing type water spraying desuperheater Download PDFInfo
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- CN102650425B CN102650425B CN201210174584.5A CN201210174584A CN102650425B CN 102650425 B CN102650425 B CN 102650425B CN 201210174584 A CN201210174584 A CN 201210174584A CN 102650425 B CN102650425 B CN 102650425B
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Abstract
The invention provides a composite bushing type water spraying desuperheater which comprises a cylinder body and an inner bushing arranged inside the cylinder body, wherein a body pipe seat is arranged above one end of the cylinder body. The composite bushing type water spraying desuperheater is characterized in that a spray nozzle strengthened protection pipe is coaxially arranged inside the body pipe seat; an outer-layer pipe mouth of the composite seat pipe is connected with the spray nozzle strengthened protection pipe; the lower end of an inner-layer pipe mouth of the composite pipe seat is arranged inside the upper end of the outer-layer pipe mouth of the composite pipe seat; the upper end of a spray nozzle pipe which is coaxially arranged inside the spray nozzle strengthened protection pipe is connected with the inner-layer pipe mouth of the composite pipe seat; and a fixed support block is arranged below the spray nozzle pipe. According to the composite bushing type water spraying desuperheater disclosed by the invention, the defects in the prior art are overcome; due to the adoption of the sealed composite bushing seat and the spray nozzle strengthened protection pipe, the application range of the composite bushing type water spraying desuperheater is widened and the safety and the reliability of the operation process of the composite bushing type water spraying desuperheater are enhanced. The composite bushing type water spraying desuperheater has the advantages of simple structure, convenience in manufacture and assembly and convenience in maintenance.
Description
Technical field
The present invention relates to a kind of composite casing type direct-contact desuperheater, for station boiler again, superheater system, belong to direct-contact desuperheater device technique field.
Background technology
Attemperator is the important device for steam regulation boiler steam temperature.In thermal power plant, if do not have attemperator just the vapor (steam) temperature of boiler export cannot be controlled in rated range, can make the parts damages such as boiler turbine or cause a serious accident.The adjusting of vapor (steam) temperature is divided into two large classes: fume side regulates and steam tempering.Direct-contact desuperheater is the Main Means of steam tempering vapor (steam) temperature.
The flanged formula spray desuperheating of tradition single tube seat apparatus as shown in Figure 1, in direct-contact desuperheater, be provided with the neck bush 2 of thin-walled, its objective is and avoid the thermal shock of the incomplete desuperheat water droplet of atomization to heavy wall header or connecting pipe inwall, in the time that thicker desuperheating water drops onto on neck bush 2, because neck bush 2 accumulation of heat inertia are little, water droplet is gasified rapidly, and the thermal stress producing on neck bush 2 is little.Neck bush 2 is connected with cylindrical shell 1 with set bolt 4 near former nozzle place, former blast tube 5 is directly connected with body base 6 by the flange auxiliary connection being made up of flange 7, blind flange 8, stud 9 and nut 10, and former blast tube 5 directions are consistent with the interior airflow direction of attemperator body 1.
There is following shortcoming in the flanged formula direct-contact desuperheater of tradition single tube seat: when operation, cantilever vibration can occur spray nozzle device, easily cause spray nozzle device fracture, desuperheating water sprays from breaking part, attemperator lining and cylindrical shell can form crackle because of thermal (temperature difference) stress, if and the nozzle head of fracture is with air-flow inflow hot side pipe, can cause booster.The flange auxiliary connection being made up of flange 7, blind flange 8, stud 9 and nut 10 easily produces and leaks in the time that attemperator moves, and is not suitable for using in the direct-contact desuperheater under HTHP running status.
Summary of the invention
The object of this invention is to provide a kind of safe and reliable, composite casing type spray desuperheating device of facilitating processing and manufacturing and assembling maintenance.
In order to achieve the above object, technical scheme of the present invention is to provide a kind of composite casing type direct-contact desuperheater, comprise cylindrical shell and be located at its inner neck bush, body base is located at top, cylindrical shell one end, it is characterized in that: described body base inside is coaxially provided with nozzle and strengthens pillar, the outer one deck mouth of pipe of compound base is strengthened pillar with nozzle and is connected, and in compound base, inside, the outer one deck mouth of pipe upper end of compound base is located in one deck mouth of pipe lower end; Connect one deck mouth of pipe in compound base with the blast tube upper end that is located in nozzle reinforcement pillar inside, blast tube below is provided with fixed support block.
Preferably, described blast tube is that end is the bourdon's tube shape that has porous of cecum.
Preferably, described blast tube lower end is provided with nozzle.
Preferably, described nozzle is at least 1.
Preferably, described fixed support block is location ring-type.
In the present invention, in compound base, the outer one deck mouth of pipe of one deck mouth of pipe and compound base is combined into the compound sleeve base of good airproof performance, not only avoid leakage defect and the low-temp low-pressure of former flange connection to use limitation, improve the scope of application of direct-contact desuperheater design temperature and design pressure, and effectively nozzle has been strengthened to the scouring force that recoil strength that pillar bears and steam brings and be passed on body base and cylindrical shell.Nozzle is strengthened pillar protection and fixed nozzle and coupled blast tube effectively; recoil strength while strengthening nozzle operation; play a supporting role; also the possibility of spray nozzle device cantilever vibration while having avoided operation; guarantee that spray nozzle device does not rupture, can also avoid steam directly nozzle and blast tube to be washed away.
Device provided by the invention has overcome the deficiencies in the prior art, strengthens pillar by compound sleeve base and the nozzle of sealing, has improved the scope of application of direct-contact desuperheater, strengthen the safety and reliability of direct-contact desuperheater running, simple in structure, manufacture easy to assembly, be convenient to safeguard.
Accompanying drawing explanation
Fig. 1 is the flanged formula direct-contact desuperheater of traditional single tube seat structural representation;
Fig. 2 is a kind of composite casing type direct-contact desuperheater structural representation provided by the invention;
Fig. 3 is that in the present embodiment, nozzle is strengthened pillar and the outer one deck nozzle structure schematic diagram of compound base;
Description of reference numerals
1-cylindrical shell; 2-neck bush; 3-carrying bolt; 4-set bolt; The former blast tube of 5-; 6-body base; 7-flange; 8-blind flange; 9-stud; 10-nut; One deck mouth of pipe in the compound base of 11-; The outer one deck mouth of pipe of the compound base of 12-; 13-nozzle is strengthened pillar; 14-nozzle; 15-fixed support block; 16-blast tube.
The specific embodiment
For the present invention is become apparent, hereby with a preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Fig. 2 is a kind of composite casing type direct-contact desuperheater structural representation provided by the invention, and described a kind of composite casing type direct-contact desuperheater is strengthened pillar 13, fixed support block 15 and blast tube 16 and formed by one deck mouth of pipe 11, the outer one deck mouth of pipe 12 of compound base, nozzle in cylindrical shell 1, neck bush 2, carrying bolt 3, set bolt 4, body base 6, compound base.
The built-in neck bush 2 of cylindrical shell 1, neck bush 2 is fixing and carrying bolt 3 supporting and locations by set bolt 4.Neck bush 2 one end are fixed on attemperator axial direction by set bolt 4, and the other end of neck bush 2 is free ends, can free wxpansion.In other appropriate locations of neck bush 2, recycling carrying bolt 3 radially supporting and locating neck bush.Body base 6 is welded in cylindrical shell 1 one end, and neck bush has in body base 6 relevant positions the hole matching.
Compound sleeve base is to be combined by one deck mouth of pipe 11 in compound base and the outer one deck mouth of pipe 12 of compound base.When assembling, blast tube 16 upper ends connect one deck mouth of pipe 11 in compound base, the bourdon's tube shape that has porous that blast tube 16 is cecum for end, if reheat system direct-contact desuperheater, blast tube 16 lower ends also connect nozzle 14, the quantity of nozzle 14 is at least 1, can use many nozzles 14 according to the increase series connection of injection flow rate, and subordinate nozzle 14 ends are cecum.
In conjunction with Fig. 3, nozzle is strengthened pillar 13 lower ends and is had breach, so that coaxial assembling nozzle 14, nozzle is strengthened pillar 13 and is connected with the outer one deck mouth of pipe 12 of compound base.The assembly that the interior one deck pipe 11 of compound base and nozzle 14, blast tube 16 assemble is inserted in the outer one deck mouth of pipe 12 of compound base again strengthens with nozzle interior welding of assembly that pillar 13 combines, fixed support block 15 is effectively welded with nozzle reinforcement pillar 13 after locking nozzle 14 mutually, makes nozzle 14 difficult drop-offs.The compound sleeve base that is equipped with nozzle 14 elements such as grade welds with attemperator body base 6 again.When assembling, notice guaranteeing that nozzle 14, nozzle are strengthened pillar 13 directions consistent with the interior airflow direction of attemperator body 1.
Claims (4)
1. a composite casing type direct-contact desuperheater, comprise cylindrical shell (1) and be located at its inner neck bush (2), body base (6) is located at top, cylindrical shell (1) one end, it is characterized in that: described body base (6) inside is coaxially provided with nozzle and strengthens pillar (13), the outer one deck mouth of pipe (12) of compound base is strengthened pillar (13) with nozzle and is connected, and in compound base, the outer one deck mouth of pipe (12) of compound base inside, upper end is located in one deck mouth of pipe (11) lower end; Connect one deck mouth of pipe (11) in compound base with being located in inner blast tube (16) upper end of nozzle reinforcement pillar (13), blast tube (16) below is provided with fixed support block (15);
Blast tube (16) lower end is provided with nozzle (14);
The assembly that the interior one deck mouth of pipe (11) of compound base and nozzle (14), blast tube (16) assemble is inserted in the outer one deck mouth of pipe (12) of compound base again strengthens with nozzle interior welding of assembly that pillar (13) combines.
2. a kind of composite casing type direct-contact desuperheater as claimed in claim 1, is characterized in that: the bourdon's tube shape that has porous that described blast tube (16) is cecum for end.
3. a kind of composite casing type direct-contact desuperheater as claimed in claim 1, is characterized in that: described nozzle (14) is at least 1.
4. a kind of composite casing type direct-contact desuperheater as claimed in claim 1, is characterized in that: described fixed support block (15) is location ring-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174584.5A CN102650425B (en) | 2012-05-30 | 2012-05-30 | Composite bushing type water spraying desuperheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210174584.5A CN102650425B (en) | 2012-05-30 | 2012-05-30 | Composite bushing type water spraying desuperheater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102650425A CN102650425A (en) | 2012-08-29 |
| CN102650425B true CN102650425B (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210174584.5A Active CN102650425B (en) | 2012-05-30 | 2012-05-30 | Composite bushing type water spraying desuperheater |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606597B (en) * | 2017-10-09 | 2023-09-22 | 上海锅炉厂有限公司 | Sleeve seat type water spraying desuperheater |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5304327A (en) * | 1992-07-13 | 1994-04-19 | Welker Engineering, Inc. | Mercaptan injection apparatus for use with a pipeline |
| CN201662056U (en) * | 2009-11-30 | 2010-12-01 | 上海锅炉厂有限公司 | Water spraying device of desuperheater |
| CN202647721U (en) * | 2012-05-30 | 2013-01-02 | 上海锅炉厂有限公司 | Composite bushing type spray desuperheater |
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2012
- 2012-05-30 CN CN201210174584.5A patent/CN102650425B/en active Active
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| CN102650425A (en) | 2012-08-29 |
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