CN203869023U - Dual-supported spray type desuperheater for boilers - Google Patents
Dual-supported spray type desuperheater for boilers Download PDFInfo
- Publication number
- CN203869023U CN203869023U CN201420314701.8U CN201420314701U CN203869023U CN 203869023 U CN203869023 U CN 203869023U CN 201420314701 U CN201420314701 U CN 201420314701U CN 203869023 U CN203869023 U CN 203869023U
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- CN
- China
- Prior art keywords
- cylindrical shell
- jet pipe
- cylinder
- spray tube
- tube
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- Expired - Fee Related
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a dual-supported spray type desuperheater for boilers and relates to desuperheaters for boiler superheater systems. The dual-supported spray type desuperheater comprises a cylinder, an inner sleeve and a spray tube; the inner sleeve and the spray tube are arranged inside the cylinder; the spray tube is arranged along the cylinder radially, and one end of the spray tube penetrates an opening formed in the cylinder to extend into the cylinder; a tube holder opposite to the opening is arranged on the inner wall of the cylinder, the end, extending into the cylinder, of the spray tube is arranged in the tube holder in a floatable manner, and the tube holder is matched with the circumference of the end of the spray tube to limit the spray tube move along a radial direction of the tube holder; the other end of the spray tube extends out of the cylinder, and is fixed by a spray tube support arranged on the outer wall of the cylinder; fixing blocks are arranged between the spray tube and the inner wall of the opening of the cylinder and are welded to the cylinder; the spray tube is provided with a nozzle in the cylinder, and an outflow direction of the nozzle is consistent with a flow direction of steam in the inner sleeve. In application of the dual-supported spray type desuperheater, vibration of the spray tube can be reduced while risks of crack and fracture of the spray tube are lowered.
Description
Technical field
The utility model relates to the attemperator that boiler superheater system is used, and is specifically related to a kind of Double-support-type boiler direct-contact desuperheater.
Background technology
The superheater system of boiler of power plant system configuration will arrange attemperator, be used for regulating the temperature of superheated steam, general superheater system is provided with three grades of direct-contact desuperheaters, one-level attemperator is arranged in low temperature superheater (low mistake) outlet header to the tube connector of large-size screen monitors import header, secondary attemperator is arranged in full large-size screen monitors outlet header to the tube connector of pendant superheater import header, and three grades of attemperators are arranged in pendant superheater outlet header to the tube connector of high temperature superheater import header.
Existing desuperheater spray nozzle is cantilevered multihole nozzle formula structure, has many apertures on the bourdon's tube perpendicular to attemperator tubular axis, and desuperheating water, from aperture ejection atomization, mixes with equidirectional steam, reaches the object that reduces steam temperature.Because cantilever design nozzle is that single-point is fixed, therefore in the time dropping into desuperheating water, very easily produce jet pipe vibration, Long-term Vibration causes nozzle to reduce at the Fatigue Strength of Metal of fixed point, ruptures.After desuperheater spray nozzle fracture, the desuperheating water of 280 DEG C directly contacts with more than 500 DEG C superheater headers, colds and heat succeed each other and causes header metal to crack.Since going into operation, repeatedly there is jet pipe phenomenon of rupture in superheater attemperator, badly influences safety in production.
Utility model content
Vibrate the jet pipe generation crackle causing, the problem of fracture for solving existing attemperator jet pipe, the utility model provides a kind of Double-support-type boiler direct-contact desuperheater.
For achieving the above object, the technical solution of the utility model is: a kind of Double-support-type boiler direct-contact desuperheater, comprise cylindrical shell, be arranged on inner sleeve and the jet pipe of inner barrel, jet pipe is along the radially setting of cylindrical shell, one end of jet pipe extend in cylindrical shell through the perforate arranging on cylindrical shell, on the inwall of cylindrical shell, be provided with a support base relative with described perforate, unsteady being arranged in one end that jet pipe extend in cylindrical shell supported in base, and supporting base matches with the periphery of nozzle-end, in order to limit jet pipe along its radial motion, the other end of jet pipe reaches cylindrical shell outside, and fixed by the jet pipe bearing being arranged on cylinder body outer wall, on described jet pipe and cylindrical shell, between the inwall of perforate, be provided with fixed block, fixed block is welded on cylindrical shell, the part that described jet pipe is positioned at cylindrical shell is provided with nozzle, the water outlet direction of nozzle is consistent with the vapor flow direction in inner sleeve.
Beneficial effect: the utility model adopts the mode that supports base and the dual-gripper of jet pipe bearing that jet pipe is fixed on attemperator cylindrical shell, and one end adopts the mode of float support, reduce on the one hand the vibration of jet pipe, reduced the risk that jet pipe cracks, ruptures, the thermal expansion that can produce jet pipe on the other hand compensates.Between jet pipe and attemperator cylindrical shell, fixed block is set, can further plays the effect of fixing jet pipe, and fixed block is only welded on cylindrical shell, do not weld with jet pipe, guaranteed that the expansion of jet pipe is unimpeded.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure, be labeled as: 1, cylindrical shell, 2, inner sleeve, 3, jet pipe, 4, support base, 5, jet pipe bearing, 6, fixed block, 7, nozzle, 8, temperature socket.
Detailed description of the invention
As shown in Figure 1, a kind of Double-support-type boiler direct-contact desuperheater, comprise cylindrical shell 1, be arranged on inner sleeve 2 and the jet pipe 3 of cylindrical shell 1 inside, jet pipe 3 is along the radially setting of cylindrical shell 1, one end of jet pipe 3 extend in cylindrical shell 1 through the perforate arranging on cylindrical shell 1, on the inwall of cylindrical shell 1, be provided with a support base 4 relative with described perforate, unsteady being arranged in one end that jet pipe 3 extend in cylindrical shell 1 supported in base 4, support in base 4 and be provided with the draw-in groove for supporting jet pipe 3 ends, the end of jet pipe 3 extend in draw-in groove, between its end and the axial direction of draw-in groove, maintain the space of moving about, the axial elongation producing under thermal expansion in order to compensate jet pipe 3, between the periphery of jet pipe 3 ends and draw-in groove, closely cooperate, limit jet pipe 3 in motion radially with this, reduce the oscillation phenomenon that jet pipe 3 produces in the time dropping into desuperheating water, the other end of jet pipe 3 reaches cylindrical shell 1 outside, and fixed by the jet pipe bearing 5 being arranged on cylindrical shell 1 outer wall, on described jet pipe 3 and cylindrical shell 1, between the inwall of perforate, be provided with fixed block 6, fixed block 6 is welded on cylindrical shell 1, the part that described jet pipe 3 is positioned at cylindrical shell 1 is provided with nozzle 7, the water outlet direction of nozzle 7 is consistent with the vapor flow direction in inner sleeve 2.
6 of described fixed blocks are welded on cylindrical shell 1, do not weld with jet pipe 3, unimpeded to guarantee that jet pipe expands.
On described cylindrical shell 1, be provided with temperature socket 8, for temperature element is set, the temperature of steam in cylindrical shell measured.
Claims (2)
1. a Double-support-type boiler direct-contact desuperheater, comprise cylindrical shell (1), be arranged on cylindrical shell (1) inner inner sleeve (2) and jet pipe (3), jet pipe (3) is along the radially setting of cylindrical shell (1), one end of jet pipe (3) extend in cylindrical shell (1) through the upper perforate arranging of cylindrical shell (1), it is characterized in that: on the inwall of cylindrical shell (1), be provided with a support base (4) relative with described perforate, unsteady being arranged in one end that jet pipe (3) extend in cylindrical shell (1) supported in base (4), and supporting base (4) matches with the periphery of jet pipe (3) end, in order to limit jet pipe (3) along its radial motion, the other end of jet pipe (3) reaches cylindrical shell (1) outside, and fixed by the jet pipe bearing (5) being arranged on cylindrical shell (1) outer wall, between the inwall of the upper perforate of described jet pipe (3) and cylindrical shell (1), be provided with fixed block (6), fixed block (6) is welded on cylindrical shell (1), the part that described jet pipe (3) is positioned at cylindrical shell (1) is provided with nozzle (7), the water outlet direction of nozzle (7) is consistent with the vapor flow direction in inner sleeve (2).
2. a kind of Double-support-type boiler direct-contact desuperheater as claimed in claim 1, is characterized in that: on described cylindrical shell (1), be provided with temperature socket (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314701.8U CN203869023U (en) | 2014-06-13 | 2014-06-13 | Dual-supported spray type desuperheater for boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420314701.8U CN203869023U (en) | 2014-06-13 | 2014-06-13 | Dual-supported spray type desuperheater for boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203869023U true CN203869023U (en) | 2014-10-08 |
Family
ID=51649969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420314701.8U Expired - Fee Related CN203869023U (en) | 2014-06-13 | 2014-06-13 | Dual-supported spray type desuperheater for boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203869023U (en) |
-
2014
- 2014-06-13 CN CN201420314701.8U patent/CN203869023U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20200613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |