CN2495910Y - Mechanism for reducing temp. deviation of over-heating device of boiler reheater - Google Patents
Mechanism for reducing temp. deviation of over-heating device of boiler reheater Download PDFInfo
- Publication number
- CN2495910Y CN2495910Y CN 01253616 CN01253616U CN2495910Y CN 2495910 Y CN2495910 Y CN 2495910Y CN 01253616 CN01253616 CN 01253616 CN 01253616 U CN01253616 U CN 01253616U CN 2495910 Y CN2495910 Y CN 2495910Y
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- outlet
- steam
- tube panel
- case
- pipe
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- Expired - Fee Related
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Abstract
The utility model discloses a mechanism used for reducing the temperature deviation of the reheater and overheater of a boiler. The mechanism is characterized in that a steam inlet is connected with a central container from the left to right tube screens of an inlet container. Each a plurality of tube screens is on tube screen passage and the steam flows toward a steam outlet through the outlet container. A plurality of tube screens of the inlet container mutually form a crossed flow composite structure through various central containers, and then individually flow toward the steam outlet.
Description
Technical field: the utility model relates to electricity generation boiler and other boiler technology fields, belongs to a kind of mechanism that avoids heavy duty boiler to be in operation the pipe overtemperature demolition accident of reheater or superheater takes place specifically.
Technical background: in recent years, the many homemade and introduction type electricity generation boilers of China, particularly big capacity electricity generation boiler, the pipe overtemperature (tube temperature surpasses the allowable temperature of used steel) and the demolition accident that are in operation reheater or superheater take place.In power plant, a pipe explosion will cause the economic loss of units up to a million in the boiler.The reason of overtemperature tube burst be mostly since in reheater and the superheater tube group along each sheet of boiler width tube panel in parallel, or cause with being heated of each root pipe in parallel in a slice tube panel is inhomogeneous.Its outlet temperature of pipe that pipe that received heat is big or steam flow are little will raise.The overtemperature tube burst accident will take place if vapor (steam) temperature is elevated to the allowable temperature that the tube wall temperature that makes pipe surpasses used steel.In the boiler design of traditional homemade and introduction type, seldom take to make the measure that steam flow increases in the big pipe of being heated, but the steam flow of every pipe is basic identical, the pipe steam flow that perhaps is heated big is on the contrary little.So the overtemperature tube burst accident of reheater and superheater is many in the boiler of power plant and other purposes.
Summary of the invention: the purpose of this utility model provides the distribution of a kind of change along each sheet of boiler width tube panel in parallel front and back level caloric receptivity, compensate caloric receptivity inhomogeneities along the boiler width tube panel, reach and make the bright heat of all pipes be tending towards uniform purpose, fundamentally eliminate a kind of boiler reheater superheater temperature deviation mechanism that reduces of overtemperature tube burst accident.
For finishing the technical scheme that above-mentioned purpose is taked: the utility model is formed at steam inlet, steam (vapor) outlet, inlet header case, outlet collection case and boiler width some tube panels in parallel in parallel of prior art, collection case in the middle of its feature steam inlet is connected by every from left to right several pieces tube panels of inlet header case, whenever several pieces are a tube panel passage, flow to steam (vapor) outlet through outlet collection case, every several pieces tube panels of inlet header case all collect case in the middle of different, form the cross-current combining structure mutually, flow to steam outlet separately.
The utility model is owing to several pieces tube panels are formed a cross-channel, and back grade that forces the prime tube panel steam flow of being heated big to be heated little shields, thereby avoids the overtemperature accident to take place, and pipe explosion accident of minimizing can be saved the economic loss of units up to a million in power plant.
Description of drawings:
Fig. 1 is the utility model structure chart;
Fig. 2 is the utility model flow passage structure figure;
Fig. 3 is another example structure of the utility model figure;
Fig. 4 is another embodiment flow passage structure of the utility model figure.
The specific embodiment: existing big capacity electricity generation boiler, demolition accident can take place in the allowable temperature that the tube temperature that reheater or superheater take place of being in operation surpasses used steel, the utility model is at steam inlet 1 illustrated in figures 1 and 2, steam (vapor) outlet 6, inlet header case 2, outlet collection case 5, middle collection case 7,8,9 and 10, form along boiler width 4 some tube panels 3 in parallel in parallel, collection case 7 led to tube panel 26～28 pipes and collects case 5 to steam (vapor) outlet 6 through outlet in the middle of wherein tube panel 11～13 pipes connected, collection case 9 led to tube panel 23～25 pipes and collects case 5 to steam (vapor) outlet 6 through outlet in the middle of tube panel 14～16 pipes connected, collection case 10 led to tube panel 32～34 pipes and collects case 5 to steam (vapor) outlet 6 through outlet in the middle of tube panel 17～19 pipes connected, the middle collection of tube panel 20～22 pipes connection case 8 leads to tube panel 29～31 pipes and leads to steam (vapor) outlet 6 through outlet collection case 5, composition cross-current combining structure.
Embodiment two as shown in Figure 3 and Figure 4, collection case 8 led to tube panel 32～34 pipes and flows to steam (vapor) outlet 6 through outlet collection case 5 in the middle of tube panel 11～13 pipes connected; The middle collection of tube panel 14～16 pipes connection case 10 leads to tube panel 29～31 pipes and flows to steam (vapor) outlet 6 through outlet collection case 5; The middle collection of tube panel curtain 17～19 pipes connection case 9 leads to tube panel 26～28 pipes and flows to steam (vapor) outlet 6 through outlet collection case 5; The middle collection of tube panel 20～22 pipes connection case 7 leads to tube panel 23～25 pipes and flows to steam (vapor) outlet 6 through outlet collection case 5, forms the cross-current combining structure equally.
Claims (1)
1, a kind of by steam inlet (1), steam (vapor) outlet (6), inlet header case (2), outlet collection case (5), middle collection case (7,8,9 and 10), reduce boiler reheater superheater temperature deviation mechanism along what boiler width (4) some tube panels in parallel in parallel (3) were formed, its feature collection case (7) in the middle of tube panel (11～13) pipe connects leads to tube panel (26～28) pipe and collects case (5) to steam (vapor) outlet (6) through outlet, collection case (9) led to tube panel (23～25) pipe and collects case (5) to steam (vapor) outlet (6) through outlet in the middle of tube panel (14～16) pipe connected, collection case (10) led to tube panel (32～34) pipe and collects case (5) to steam (vapor) outlet (6) through outlet in the middle of tube panel (17～19) pipe connected, tube panel (20～22) pipe connection middle collection case (8) leads to tube panel (29～31) pipe and leads to steam (vapor) outlet (6) through outlet collection case (5), composition cross-current combining structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253616 CN2495910Y (en) | 2001-09-12 | 2001-09-12 | Mechanism for reducing temp. deviation of over-heating device of boiler reheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253616 CN2495910Y (en) | 2001-09-12 | 2001-09-12 | Mechanism for reducing temp. deviation of over-heating device of boiler reheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2495910Y true CN2495910Y (en) | 2002-06-19 |
Family
ID=33663082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01253616 Expired - Fee Related CN2495910Y (en) | 2001-09-12 | 2001-09-12 | Mechanism for reducing temp. deviation of over-heating device of boiler reheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2495910Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819461A (en) * | 2015-05-26 | 2015-08-05 | 哈尔滨哈锅锅炉工程技术有限公司 | Heating surface structure with reheat cycle fluidized bed boiler |
| CN108167804A (en) * | 2017-12-27 | 2018-06-15 | 哈尔滨锅炉厂有限责任公司 | A kind of transition header of Boiler of Ultra-supercritical Unit |
| CN109708096A (en) * | 2019-02-11 | 2019-05-03 | 济南锅炉集团有限公司 | A kind of intersection mixed flow superheater |
| CN111594820A (en) * | 2020-06-01 | 2020-08-28 | 哈尔滨锅炉厂有限责任公司 | A collection case structure for reducing tube panel flow deviation |
| CN112097242A (en) * | 2020-09-18 | 2020-12-18 | 东方菱日锅炉有限公司 | Multi-tube discharge superheater of waste heat boiler |
-
2001
- 2001-09-12 CN CN 01253616 patent/CN2495910Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819461A (en) * | 2015-05-26 | 2015-08-05 | 哈尔滨哈锅锅炉工程技术有限公司 | Heating surface structure with reheat cycle fluidized bed boiler |
| CN108167804A (en) * | 2017-12-27 | 2018-06-15 | 哈尔滨锅炉厂有限责任公司 | A kind of transition header of Boiler of Ultra-supercritical Unit |
| CN108167804B (en) * | 2017-12-27 | 2019-06-18 | 哈尔滨锅炉厂有限责任公司 | A kind of transition header of Boiler of Ultra-supercritical Unit |
| CN109708096A (en) * | 2019-02-11 | 2019-05-03 | 济南锅炉集团有限公司 | A kind of intersection mixed flow superheater |
| CN111594820A (en) * | 2020-06-01 | 2020-08-28 | 哈尔滨锅炉厂有限责任公司 | A collection case structure for reducing tube panel flow deviation |
| CN111594820B (en) * | 2020-06-01 | 2022-02-08 | 哈尔滨锅炉厂有限责任公司 | A collection case structure for reducing tube panel flow deviation |
| CN112097242A (en) * | 2020-09-18 | 2020-12-18 | 东方菱日锅炉有限公司 | Multi-tube discharge superheater of waste heat boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |