CN202769637U - Composite bushing type direct contact desuperheater - Google Patents
Composite bushing type direct contact desuperheater Download PDFInfo
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- CN202769637U CN202769637U CN 201220297490 CN201220297490U CN202769637U CN 202769637 U CN202769637 U CN 202769637U CN 201220297490 CN201220297490 CN 201220297490 CN 201220297490 U CN201220297490 U CN 201220297490U CN 202769637 U CN202769637 U CN 202769637U
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- nozzle
- contact desuperheater
- cylindrical shell
- type direct
- body base
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Abstract
The utility model discloses a composite bushing type direct contact desuperheater which comprises a cylinder body, wherein an inner bushing is arranged in the cylinder body and is fixed together with the cylinder body through bolts, and a body pipe saddle is arranged on the cylinder body. The direct contact desuperheater is characterized by further comprising a composite bushing seat fixedly connected with the body pipe saddle; one end of a nozzle connecting pipe is connected with a pipeline in the composite bushing seat, and the other end is provided with a nozzle at the end part which is positioned in the inner bushing or in the cylinder body; and the nozzle faces the opening part of the inner bushing. According to the utility model, a combination way that a nozzle reinforcing protection pipe and the composite bushing seat are added is adopted, so that the direct contact desuperheater has the advantages of convenience for processing, manufacturing, assembly and maintenance, safety in operation and the like.
Description
Technical field
The utility model relates to a kind of water spraying device of desuperheater, is used for station boiler resuperheater system, belongs to the direct-contact desuperheater technical field.
Background technology
Attemperator is the important device of steam regulation boiler steam temperature.In the thermal power plant, if there is not attemperator just the vapor (steam) temperature of boiler export cannot be controlled in the rated range, can makes the parts damages such as boiler turbine or cause a serious accident.The adjusting of vapor (steam) temperature can be divided into two large classes: fume side is regulated and steam tempering.Direct-contact desuperheater is the Main Means of steam tempering vapor (steam) temperature.
As shown in Figure 1, be the flanged formula direct-contact desuperheater of boiler original single tube seat structural representation.In direct-contact desuperheater, be provided with the neck bush 2 of thin-walled, its objective is and avoid atomizing the thermal shock of incomplete desuperheat water droplet to heavy wall header or connecting pipe inwall, when thicker desuperheating water drops onto on the neck bush 2, because neck bush 2 accumulation of heat inertia are little, water droplet is gasified rapidly, little in the thermal stress that neck bush 2 produces.Neck bush 2 is connected with cylindrical shell 1 with set bolt 4 near the nozzle place, and blast tube 5 directly links to each other with body base 6 by the flange auxiliary connection, and the direction of nozzle 5 is consistent with attemperator body 1 interior airflow direction.Its shortcoming is: cantilever vibration can occur in spray nozzle device during operation, causes easily the spray nozzle device fracture, and desuperheating water sprays from breaking part, and attemperator lining and cylindrical shell can form crackle because of thermal (temperature difference) stress; And if the nozzle head of fracture can cause booster with air-flow inflow hot side pipe.The flange auxiliary connection that is comprised of flange 7, blind flange 8, stud 9 and nut 10 leaks in attemperator easy generation in service, and is not suitable for using in the direct-contact desuperheater under the HTHP running status.
Summary of the invention
The object of the invention provides a kind of direct-contact desuperheater that is adapted at moving under the HTHP, has preferably high temperature resistance and crushing resistance.
In order to achieve the above object, the utility model provides a kind of composite casing type direct-contact desuperheater, comprise cylindrical shell, be provided with neck bush in the cylindrical shell, neck bush and cylindrical shell are bolted, cylindrical shell is provided with the body base, it is characterized in that, also comprise the compound sleeve base, the compound sleeve base is fixedly connected with the body base, and the pipeline in an end of nozzle connecting pipe and the compound sleeve base is connected, and the end of the other end is provided with nozzle, this end is positioned at neck bush, or is positioned at cylindrical shell, nozzle direction facing to the opening part of neck bush.
Preferably, described compound sleeve base comprises outer tube, and the outer rim of outer tube is connected with the body base, also comprises the inner tube of being located in the body base, and outer tube, inner tube, nozzle connecting pipe are communicated with successively.
Further, the outside of described nozzle connecting pipe and nozzle cover has nozzle to strengthen pillar, and its end is fixedly connected with described inner tube.
Further, be provided with at least one block of coaxial positioning steel plate, this coaxial positioning steel plate and body base coaxial positioning between the inwall of the outer circumference surface of described nozzle reinforcement pillar and body base.
Preferably, described nozzle is that nozzle head or the bottom of a plurality of series connection is cecum, is provided with the bourdon's tube shape nozzle of porous.
The utility model adopts increases the combination that nozzle is strengthened pillar and compound sleeve base, has the processing and manufacturing of convenience, is convenient to the advantages such as assembling maintenance, trouble free service.Concrete advantage is as follows:
1. compound sleeve base form good airproof performance, avoided leakage defect and the low-temp low-pressure of former flange connection to use limitation, change the scope of application that the complete penetraction and fusion in welding Welding Structure has also improved direct-contact desuperheater design temperature design pressure into, this composite casing type spray desuperheating, simple in structure, make easy to assembly, be convenient to safeguard, safe and reliable;
2. by compound sleeve base form, effectively nozzle is strengthened the scouring force that recoil strength that pillar bears and steam brings and be passed on attemperator body base and the attemperator cylindrical shell.Nozzle is strengthened pillar effectively protection and fixed nozzle and the blast tube that links to each other thereof, recoil strength when strengthening blast tube work, play a supporting role, spray nozzle device can be given birth to the possibility of cantilever vibration when also avoiding moving, guarantee that spray nozzle device does not rupture, can also avoid steam directly blast tube and continuous blast tube thereof to be washed away;
3. the compound sleeve base bears the high pressure weld bond only has the outer one deck mouth of pipe of compound sleeve base dock weld bond with one of body base, and all the other compound sleeve bases outward one deck mouth of pipe and the interior one deck mouth of pipe of compound sleeve base etc. dock weld bond and are the with no pressure weld bond.
4. nozzle connecting pipe and nozzle can effectively lock blast tube with retainer ring, make the nozzle difficult drop-off.
Description of drawings
The flanged formula direct-contact desuperheater of Fig. 1 tradition single tube seat structural representation;
Fig. 2 is the structural representation that nozzle connecting pipe one end is positioned at the composite casing type direct-contact desuperheater of neck bush;
Fig. 3 is the structural representation that nozzle connecting pipe one end is positioned at the outer composite casing type direct-contact desuperheater of neck bush;
Fig. 4 is the cutaway view of A-A face among Fig. 3.
Among the figure:
The 1-cylindrical shell; The 2-neck bush; The 3-carrying bolt; The 4-set bolt; The 5-blast tube; 6-body base; The 7-flange; The 8-blind flange; The 9-stud; The 10-nut; The 11-outer tube; The 12-inner tube; The 13-nozzle is strengthened pillar; The 14-nozzle; The 15-retainer ring; The 16-nozzle connecting pipe; 17-coaxial positioning steel plate.
The specific embodiment
For the present invention is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
As shown in Figure 2, be positioned at the structural representation of the composite casing type direct-contact desuperheater of neck bush 2 for nozzle connecting pipe 16 1 ends, comprise cylindrical shell 1, cylindrical shell 1 a built-in neck bush 2, neck bush 2 respectively, supporting and location 3 fixing by set bolt 4, carrying bolt on cylindrical shell 1.One end of neck bush 2 is fixed at the 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, recycle radially supporting and locating of 3 pairs of neck bush 2 of carrying bolt.Cylindrical shell 1 and neck bush 2 are provided with the perforate that is complementary in the relevant position of body base 6, and an end and the cylindrical shell 1 of body base 6 are connected and fixed.Be inserted with nozzle connecting pipe 16 in the body base 6, an end of nozzle connecting pipe 16 places in the neck bush 2, is connected with nozzle 14, and is fixing with retainer ring 15 again.The outside of nozzle connecting pipe 16 and nozzle 14 is overlapped a nozzle again and strengthened pillar 13, and nozzle is strengthened inserting at least one block of coaxial positioning steel plate 17 between pillar 13 and the body base 6, and is coaxial fixing with body base 6.Coaxial positioning steel plate 17 can be strengthened pillar with nozzle and be arranged in 13 minutes, also can strengthen pillar 13 setting that is integrated with nozzle.The other end of nozzle connecting pipe 16 connects inner tube 12, outer tube 11 successively, and the pipeline in the three is connected.Inner tube 12 forms the compound sleeve base with outer tube 11, and the outer rim of outer tube 11 is connected with the other end of body base 6, and inner tube 12 is strengthened pillar 13 with nozzle and is fixedly connected with.
As shown in Figure 3, be positioned at the structural representation of the composite casing type direct-contact desuperheater of neck bush 2 for nozzle connecting pipe 16 1 ends.The difference of present embodiment and embodiment 1 is that an end of nozzle connecting pipe 16 is positioned at outside cylindrical shell 1, the neck bush 2, and this end is cecum, has porous in this end, forms bourdon's tube shape nozzle 14.
Claims (5)
1. composite casing type direct-contact desuperheater, comprise cylindrical shell (1), be provided with neck bush (2) in the cylindrical shell (1), neck bush (2) is bolted with cylindrical shell (1), cylindrical shell (1) is provided with body base (6), it is characterized in that, also comprise the compound sleeve base, the compound sleeve base is fixedly connected with body base (6), pipeline in one end of nozzle connecting pipe (16) and the compound sleeve base is connected, the end of the other end is provided with nozzle (14), and this end is positioned at neck bush (2), or is positioned at cylindrical shell (1), the nozzle direction is facing to the opening part of neck bush (2).
2. a kind of composite casing type direct-contact desuperheater according to claim 1, it is characterized in that, described compound sleeve base comprises outer tube (11), the outer rim of outer tube (11) is connected with body base (6), also comprise the inner tube (12) of being located in the body base (6), outer tube (11), inner tube (12), nozzle connecting pipe (16) are communicated with successively.
3. a kind of composite casing type direct-contact desuperheater according to claim 2 is characterized in that, described nozzle connecting pipe (16) has nozzle to strengthen pillar (13) with the outside cover of nozzle (14), and its end is fixedly connected with described inner tube (12).
4. a kind of composite casing type direct-contact desuperheater according to claim 3, it is characterized in that, be provided with at least one block of coaxial positioning steel plate (17) between the outer circumference surface of described nozzle reinforcement pillar (13) and the inwall of body base (6), this coaxial positioning steel plate (17) and body base (6) coaxial positioning.
5. a kind of composite casing type direct-contact desuperheater according to claim 1 is characterized in that, described nozzle (14) is cecum for the nozzle head of a plurality of series connection or bottom, is provided with the bourdon's tube shape nozzle of porous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297490 CN202769637U (en) | 2012-06-22 | 2012-06-22 | Composite bushing type direct contact desuperheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297490 CN202769637U (en) | 2012-06-22 | 2012-06-22 | Composite bushing type direct contact desuperheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202769637U true CN202769637U (en) | 2013-03-06 |
Family
ID=47776204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220297490 Expired - Lifetime CN202769637U (en) | 2012-06-22 | 2012-06-22 | Composite bushing type direct contact desuperheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202769637U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566334A (en) * | 2014-12-22 | 2015-04-29 | 褚相武 | Water spraying temperature reducer |
| CN104949103A (en) * | 2014-03-28 | 2015-09-30 | 斗山重工业株式会社 | Water spray type desuperheater and desuperheating method |
| CN107606597A (en) * | 2017-10-09 | 2018-01-19 | 上海锅炉厂有限公司 | Sleeve pipe A seating direct-contact desuperheater |
-
2012
- 2012-06-22 CN CN 201220297490 patent/CN202769637U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949103A (en) * | 2014-03-28 | 2015-09-30 | 斗山重工业株式会社 | Water spray type desuperheater and desuperheating method |
| CN104949103B (en) * | 2014-03-28 | 2017-09-19 | 斗山重工业株式会社 | Water spray formula overheat cooling device and method |
| CN104566334A (en) * | 2014-12-22 | 2015-04-29 | 褚相武 | Water spraying temperature reducer |
| CN107606597A (en) * | 2017-10-09 | 2018-01-19 | 上海锅炉厂有限公司 | Sleeve pipe A seating direct-contact desuperheater |
| CN107606597B (en) * | 2017-10-09 | 2023-09-22 | 上海锅炉厂有限公司 | Sleeve seat type water spraying desuperheater |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |