CN202109467U - Radial introduction flow-equalizing device for ultra-supercritical boiler superheater - Google Patents
Radial introduction flow-equalizing device for ultra-supercritical boiler superheater Download PDFInfo
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- CN202109467U CN202109467U CN2011201195615U CN201120119561U CN202109467U CN 202109467 U CN202109467 U CN 202109467U CN 2011201195615 U CN2011201195615 U CN 2011201195615U CN 201120119561 U CN201120119561 U CN 201120119561U CN 202109467 U CN202109467 U CN 202109467U
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- inner sleeve
- header
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- distribution header
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Abstract
The utility model discloses a radial introduction flow-equalizing device for an ultra-supercritical boiler superheater. The device comprises an introduction pipe, a distribution header and a plurality of branch pipes, wherein the branch pipes are arranged side by side; each branch pipe is communicated with the distribution header; the flow equalizing device also comprises an inner sleeve; the inner sleeve is arranged in the distribution header and is provided with a plurality of small flow equalizing holes; the introduction pipe passes through the distribution header and then is communicated with the inner sleeve; and a cavity is formed between the inner sleeve and the inner wall of the distribution header and is communicated with the small flow-equalizing holes of the inner sleeve and the branch pipes respectively. Through the device, the uniformity for the distribution flow of superheated steam in the distribution header can be improved; and meanwhile, the flow pressure drop in the distribution header is kept basically unchanged.
Description
Technical field
The utility model patent relates to a kind of current equalizer of boiler superheater; Specifically be meant a kind of radially introducing current equalizer of ultra-supercritical boiler superheater; This current equalizer can help the operations staff guaranteeing on ultra-supercritical boiler superheater device security and the economic base, and accomplishing is in operation regulates the assignment of traffic of superheated steam in the superheater.
Background technology
In ultra-supercritical boiler; Boiler superheater bears washing away of high-temperature flue gas; The pendant superheater or the reheater outer ring tube panel operating temperature of especially bearing higher thermal load are very high, for the safety of the heating surface that guarantees these position superheaters and reheater, need distribute the inner installation of header throttling pipeloop at superheater; To regulate the inner assignment of traffic of inner each pipeloop of header, guarantee the security and the economy of superheater equipment.
Existing ultra-supercritical boiler superheater distributes header to adopt the throttling pipeloop to realize the adjusting of assignment of traffic, and like the radially introducing current equalizer of Fig. 1 to ultra-supercritical boiler superheater shown in Figure 3, it comprises inlet tube 1, distributes header 2 and branched pipe 3; Inlet tube 1 is welded on and distributes header 2, and is communicated with distributing header 2, and branched pipe 3 is a plurality of pipes that are arranged side by side; Each branched pipe 3 also is welded on and distributes on the header 2; And all be communicated with, the throttling pipeloop 4 with throttling function is installed in the branched pipe 3, have throttle orifice 4a in the throttling pipeloop 4 with distributing header 2; Superheated steam gets into through inlet tube 1 and distributes in the header 2; After mixed once, just get in the branched pipe 3, distributing header outlet pipeloop to arrange throttling pipeloop 4, regulate the purpose that superheater pipeloop inner stream flow distributes to reach according to position and thermic load.The current equalizer of this structure tends to cause superheated steam because the inequality of being heated that thermal deviation causes.
The utility model content
The purpose of the utility model provides a kind of radially introducing current equalizer of ultra-supercritical boiler superheater, and this current equalizer can improve the uniformity of distributing header over-heat inside steam flow distribution, keeps distributing the interior flow pressure drop of header constant basically simultaneously.
The above-mentioned purpose of the utility model realizes through following technical scheme: the radially introducing current equalizer of ultra-supercritical boiler superheater; It comprises inlet tube, distributes header and branched pipe, and branched pipe is a plurality of pipes that are arranged side by side, and each branched pipe all is communicated with distributing header; It is characterized in that: said current equalizer also comprises inner sleeve; This inner sleeve is installed in and distributes in the header, and inner sleeve has a plurality of current-sharing apertures, and said inlet tube is communicated with inner sleeve after passing and distributing header; Form cavity between the inwall of inner sleeve and distribution header, this cavity is connected with the current-sharing aperture and the branched pipe of inner sleeve respectively.
The current equalizer of the utility model distributes through regulating and distributing the inner superheated steam of header at the inner sleeve that distributes header inside to install perforate additional as restricting element; Through design inner sleeve position of opening and size; Rely on these factors of adjustment to change the assignment of traffic of superheated steam in each tube panel of super critical boiler superheater; Guarantee that the bigger tube panel of thermic load can access higher superheat steam flow and distribute; Velocity in pipes is high, plays the overheated purpose of protection heating surface, and the operating wall temperature that makes these heating surfaces within the range of permission.
In the preferred embodiment as the utility model, said distribution header is the cylinder molding box, and coaxial being installed in of inner sleeve distributed in the header, forms toroidal cavity between the inwall of inner sleeve and distribution header.
In the preferred embodiment as the utility model, said current-sharing aperture is opened in the bottom of inner sleeve, and inner sleeve forms bourdon's tube, and the current-sharing aperture perforate direction of inner sleeve is relative with the mouth of pipe of branched pipe.
Inner sleeve is installed in and distributes header inner as the current-sharing unit in the utility model, and inner sleeve is in coaxial state with distributing header; Inner sleeve is connected with distributing header, forms an axial passage, has custom-designed current-sharing aperture in the passage bottom; Superheated steam gets into toroidal cavity through these current-sharing apertures; Get into then in a plurality of branched pipes of parallel connection, realize that superheated steam distributes superheat steam flow according to designing requirement, satisfy the assignment of traffic purpose of zones of different superheated steam.
Compared with prior art; The utility model proposition is a kind of regulates the assignment of traffic in each pipeloop of superheater to installing the perforate inner sleeve additional in the ultra boiler superheater distribution header, replaces existing throttle control method, and purpose is the trouble free service that guarantees the ultra-supercritical boiler superheater surface; Replace the bigger throttling pipeloop of resistance; Guaranteeing on the superheater surface trouble free service basis, reducing because the pressure loss that throttle brings is improved assignment of traffic situation in the boiler superheater tube panel; Guarantee the security and the economy of the work of ultra-supercritical boiler heating surface, guarantee of the tube panel safe operation of ultra-supercritical boiler superheater in the high heat load zone.The utility model is simple in structure, and is cheap for manufacturing cost, can better satisfy the actual engine request of assignment of traffic in the superheater tube panel.
Description of drawings
Below in conjunction with accompanying drawing and the specific embodiment the utility model is done and to be described in further detail.
Fig. 1 is the overall structure figure that radially introduces current equalizer of ultra-supercritical boiler superheater in the prior art;
Fig. 2 is the A-A cutaway view among Fig. 1;
Fig. 3 is that the B of Fig. 2 is to enlarged drawing;
Fig. 4 is the overall structure figure that radially introduces current equalizer of the utility model ultra-supercritical boiler superheater;
Fig. 5 is the C-C cutaway view among Fig. 4;
Fig. 6 is that the D of Fig. 4 is to enlarged drawing.
The specific embodiment
Like the radially introducing current equalizer of Fig. 4 to ultra-supercritical boiler superheater shown in Figure 6, it comprises inlet tube 1, distributes header 2 and branched pipe 3, and branched pipe 3 is a plurality of pipes that are arranged side by side; Each branched pipe 3 all is communicated with distributing header 2; Current equalizer also comprises inner sleeve 5, and this inner sleeve 5 is installed in and distributes in the header 2, and two ends all are fixed on the end cap that distributes header 2 through sealing ring 7; Inner sleeve 5 has a plurality of current-sharing aperture 5a; Inlet tube 1 passes and distributes header 2 backs to be communicated with inner sleeve 5, and distributing header 2 is the cylinder molding box, and inner sleeve 5 coaxial being installed in are distributed in the header 2; Form toroidal cavity 6 between the inwall of inner sleeve 5 and distribution header 2, this toroidal cavity is connected with the current-sharing aperture 5a and the branched pipe 3 of inner sleeve respectively.
In the utility model, current-sharing aperture 5a is opened in the bottom of inner sleeve 5, and inner sleeve 5 forms bourdon's tube, and the current-sharing aperture 5a perforate direction of inner sleeve 5 is relative with the mouth of pipe of branched pipe 3.
In the utility model; Superheated steam from superheater gets into bourdon's tube inner sleeve header system by vertical direction inlet tube 1; At first get into the inner sleeve 5 that directly is communicated with inlet tube 1; Carry out getting into inner sleeve 5 and distributing the toroidal cavity 6 between header 2 inwalls through current-sharing aperture 5a after the mixed once, carried out drawing by branched pipe 3 at last after the mixing again.Owing to distributing header 2 inside to install current-sharing aperture 5a additional along bourdon's tube inner sleeve 5 bottoms; Passed through the process of twice mixing reallocation; Reduced superheated steam because the inequality of being heated that thermal deviation causes; The assignment of traffic that position through controlling concrete current-sharing aperture 5a and quantity have improved superheated steam in the superheater tube panel, inner sleeve 5 with distribute being connected of header end cap as shown in Figure 6, through the coaxial position of soft sealing ring 7 fixing internal bourdon's tube inner sleeves 5 in distributing header 2.
Claims (3)
1. the radially introducing current equalizer of ultra-supercritical boiler superheater; It comprises inlet tube, distributes header and branched pipe, and branched pipe is a plurality of pipes that are arranged side by side, and each branched pipe all is communicated with distributing header; It is characterized in that: said current equalizer also comprises inner sleeve; This inner sleeve is installed in and distributes in the header, and inner sleeve has a plurality of current-sharing apertures, and said inlet tube is communicated with inner sleeve after passing and distributing header; Form cavity between the inwall of inner sleeve and distribution header, this cavity is connected with the current-sharing aperture and the branched pipe of inner sleeve respectively.
2. the radially introducing current equalizer of ultra-supercritical boiler superheater according to claim 1; It is characterized in that: said distribution header is the cylinder molding box; Coaxial being installed in of inner sleeve distributed in the header, forms toroidal cavity between the inwall of inner sleeve and distribution header.
3. the radially introducing current equalizer of ultra-supercritical boiler superheater according to claim 1; It is characterized in that: said current-sharing aperture is opened in the bottom of inner sleeve; Inner sleeve forms bourdon's tube, and the current-sharing aperture perforate direction of inner sleeve is relative with the mouth of pipe of branched pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201195615U CN202109467U (en) | 2011-04-21 | 2011-04-21 | Radial introduction flow-equalizing device for ultra-supercritical boiler superheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201195615U CN202109467U (en) | 2011-04-21 | 2011-04-21 | Radial introduction flow-equalizing device for ultra-supercritical boiler superheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202109467U true CN202109467U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201195615U Expired - Lifetime CN202109467U (en) | 2011-04-21 | 2011-04-21 | Radial introduction flow-equalizing device for ultra-supercritical boiler superheater |
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| CN (1) | CN202109467U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244947A (en) * | 2013-04-18 | 2013-08-14 | 广东电网公司电力科学研究院 | Flow regulating device for boiler superheater or reheater distributing header branch pipe |
| CN111595478A (en) * | 2020-06-01 | 2020-08-28 | 中国核动力研究设计院 | Micro-channel heat exchanger outlet temperature measuring device and measuring method |
-
2011
- 2011-04-21 CN CN2011201195615U patent/CN202109467U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244947A (en) * | 2013-04-18 | 2013-08-14 | 广东电网公司电力科学研究院 | Flow regulating device for boiler superheater or reheater distributing header branch pipe |
| CN111595478A (en) * | 2020-06-01 | 2020-08-28 | 中国核动力研究设计院 | Micro-channel heat exchanger outlet temperature measuring device and measuring method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |
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| CX01 | Expiry of patent term |