CN204005927U - Supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system - Google Patents
Supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system Download PDFInfo
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- CN204005927U CN204005927U CN201420483540.5U CN201420483540U CN204005927U CN 204005927 U CN204005927 U CN 204005927U CN 201420483540 U CN201420483540 U CN 201420483540U CN 204005927 U CN204005927 U CN 204005927U
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- 238000001816 cooling Methods 0.000 title claims abstract description 41
- 238000009826 distribution Methods 0.000 title claims abstract description 13
- 238000003032 molecular docking Methods 0.000 claims abstract description 8
- 230000013011 mating Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 235000014171 carbonated beverage Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system, this system comprises water-cooling wall down-comer distributor, many connection distributing pipes, lower collecting box, water-cooling wall inlet tube, also comprise throttle coil, described down-comer distributor is communicated with in the docking location of distributing pipe and has at least part docking location that described throttle coil has been installed with each, Flow-rate adjustment effect by throttle coil to lower collecting box, and utilize optimized ribbed tubing to be arranged vertically the positive flow characteristic of water-cooling wall closed circuit under low-quality flow, guaranteed each closed circuit hydrodynamic force safety of boiler water wall.
Description
Technical field
The utility model relates to a kind of supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system.
Background technology
Along with optimized ribbed tubing has the discovery of to a certain degree self compensation ability under low-quality flow, for manufacturing and designing supercritical W-shaped flame boiler, provide possibility.Be that water-cooling wall has adopted the design of optimized ribbed tubing low-quality flow, the relative carbonated drink frictional resistance of heavy position pressure head wants high, has positive flow characteristic.But because of fire box temperature lack of homogeneity, and when high load capacity, mass velocity is relatively high, rely on working medium flow that self compensation ability between each loop improves loop, high heat load region difficulty meet the cooling requirement of this region pipe.In addition, from a large amount of quadrangle tangential circles and the opposed firing super critical boiler ruuning situation of having gone into operation both at home and abroad, show, although super critical boiler water quality requires tight, water treatment system is complicated, water-cooling wall lower collecting box still can deposit slag dirt and little foreign matter, particularly in the constructin phase, do not have the little foreign matter that can all remove still to accumulate in lower collecting box, at boiler maintenance, safeguard the foreign matter that also usually drops in heating surface transformation replace tubes process, these slag dirts and foreign matter are difficult to all by lower collecting box blow-off pipe, drain, easily be carried and rest in water-cooling wall inlet throttle pipeloop, causing circulation area to diminish even stops up, cause pipe overtemperature and booster.
Utility model content
The purpose of this utility model is to provide a kind of can effectively improve supercritical W-shaped flame boiler hydrodynamic force reliability, prevents the supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system that overtemperature and booster phenomenon occur.
This supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system that the utility model provides, comprise water-cooling wall down-comer distributor, many connection distributing pipes, lower collecting box, water-cooling wall inlet tube, also comprise throttle coil, described down-comer distributor is communicated with in the docking location of distributing pipe and has at least part docking location that described throttle coil has been installed with each, for regulating each closed circuit flow to make it and the mating of thermic load and resistance.
In order to prevent entering and cause pipeline to be blocked at slag dirt, little foreign matter, throttle coil one end is firmly embedded in down-comer distributor, and the other end is connected with connection distributing pipe.Preferably adopt welding.
In order further to improve hydrodynamic security reliability, described throttle coil divides and has 2 kinds at least according to its internal diameter size.
In order to facilitate slag dirt, little foreign matter directly to get rid of from sewage draining exit, described down-comer distributor has 2, is all arranged vertically.
In order to prevent in water-cooling wall import because slag is dirty, little foreign matter causes circulation area to diminish or stop up water-cooling wall overtemperature and the booster damage accident causing, simultaneously in order to simplify water screen tube row processing and manufacturing workload, save manufacturing cost, described water-cooling wall inlet tube adopts the water-cooling wall inlet tube without throttle structure.
As a kind of embodiment of the best, described throttle coil is divided into four kinds according to its internal diameter.
The present invention is owing to having increased throttle coil on down-comer distributor, and the flow difference that is communicated with distributing pipe realizes the Flow-rate adjustment to the import of lower collecting box by each,, make mating of each closed circuit flow and each closed circuit thermic load and resistance.Flow-rate adjustment effect by throttle coil to lower collecting box utilizes optimized ribbed tubing to be arranged vertically the positive flow characteristic of water-cooling wall closed circuit under low-quality flow simultaneously, has guaranteed each closed circuit hydrodynamic force safety of boiler water wall.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A portion amplification view of Fig. 1.
Fig. 3 is the expanded view of down-comer distributor.
The specific embodiment
The utlity model has as can be seen from Figure 1 down-comer distributor 1, many connection distributing pipes 2, water-cooling wall lower collecting box 3, water-cooling wall inlet tube 4, throttle coil 5, many connection distributing pipes 2 are distributed on down-comer distributor 1, and are communicated with down-comer distributor 1 respectively.Throttle coil 5 one end are firmly embedded in the sidewall of down-comer distributor 1 as can be seen from Figure 2, and the other end is connected with connection distributing pipe 2.
Fig. 3 has reflected the deployment scenarios of throttle coil on down-comer distributor.From figure, can find out, down-comer distributor 1 be communicated with the docking location of distributing pipe 2 in have part docking location that throttle coil 5 is installed, and the internal diameter of throttle coil can be different, at least should there is the throttle coil of two kinds of different inner diameters, make to be respectively communicated with and between distributing pipe, produce flow difference, and then make lower collecting box flow adjusted, each closed circuit flow and each closed circuit thermic load and resistance are matched, the reliability of boiler hydrodynamics is effectively improved, prevent that overtemperature and booster phenomenon from occurring.Down-comer distributor 3 is vertically arranged, slag dirt can be discharged from down-comer dispenser bottom blow-off pipe 6.From Fig. 1, it can also be seen that, the inlet tube that water-cooling wall inlet tube 4 adopts without throttle structure, makes the manufacturing more easily simpler than prior art, and water-cooling wall import is not easy to stop up, and has avoided pipe because stopping up the phenomenon of overtemperature and booster.
As a kind of embodiment of the present utility model, the 600MW unit supercritical W-shaped flame boiler of take is example, and the front wall of this boiler and rear water wall respectively have 12 closed circuits, and the water-cooling wall of Zuo Qiang and right wall respectively has 3 closed circuits, totally 30 closed circuits.Water after economizer heating mixes out from left and right economizer exit header, then separately enter the vertically arranged down-comer distributor 1 in the boiler left and right sides, throttle coil 5 has adopted a, b, c, the model of tetra-kinds of different inner diameters of d, four kinds of different throttle pipes of internal diameter increase (see figure 3) by a successively to d internal diameter, each throttle coil one end is embedded in the sidewall of down-comer distributor 1, the other end be communicated with distributing pipe 2 welding, by throttle coil 5, allow the feedwater of different flow to water-cooling wall lower collecting box 3, then enter each water-cooling wall inlet tube 1 by being communicated with distributing pipe 4, form water-cooling wall closed circuit.The positive flow characteristic having at distributional effects and the water-cooling wall closed circuit itself of 30 closed circuit flows combines, and can guarantee that 600MW unit supercritical W-shaped flame boiler water-cooling wall hydrodynamic force under all operating modes is reliable and secure.
Claims (7)
1. a supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system, comprise water-cooling wall down-comer distributor (1), many connection distributing pipes (2), lower collecting box (3), water-cooling wall inlet tube (4), characterized by further comprising throttle coil (5), described down-comer distributor is communicated with in the docking location of distributing pipe (2) and has at least part docking location that described throttle coil has been installed with each, for regulating each closed circuit flow to make it and the mating of thermic load and resistance.
2. supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system according to claim 1, is characterized in that described throttle coil one end is firmly embedded in down-comer distributor, and the other end is connected with connection distributing pipe.
3. supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system according to claim 1, is characterized in that described throttle coil divides and has 2 kinds at least according to its internal diameter size.
4. supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system according to claim 1, is characterized in that described down-comer distributor has 2, is all arranged vertically.
5. supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system according to claim 1 and 2, is characterized in that described water-cooling wall inlet tube adopts the water-cooling wall inlet tube without throttle structure.
6. supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system according to claim 2, is characterized in that being communicated with distributing pipe (2) and throttle pipe (5) welding.
7. supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system according to claim 3, is characterized in that described throttle coil is divided into four kinds according to its internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483540.5U CN204005927U (en) | 2014-08-26 | 2014-08-26 | Supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420483540.5U CN204005927U (en) | 2014-08-26 | 2014-08-26 | Supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system |
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| Publication Number | Publication Date |
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| CN204005927U true CN204005927U (en) | 2014-12-10 |
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| CN201420483540.5U Active CN204005927U (en) | 2014-08-26 | 2014-08-26 | Supercritical W-shaped flame boiler water-cooling wall inlet flow rate distribution system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106372308A (en) * | 2016-08-30 | 2017-02-01 | 哈尔滨锅炉厂有限责任公司 | Angle type tangentially fired boiler hydrodynamic force calculation method |
| CN109480612A (en) * | 2018-12-10 | 2019-03-19 | 珠海格力电器股份有限公司 | Steam box and cooking appliance |
-
2014
- 2014-08-26 CN CN201420483540.5U patent/CN204005927U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106372308A (en) * | 2016-08-30 | 2017-02-01 | 哈尔滨锅炉厂有限责任公司 | Angle type tangentially fired boiler hydrodynamic force calculation method |
| CN109480612A (en) * | 2018-12-10 | 2019-03-19 | 珠海格力电器股份有限公司 | Steam box and cooking appliance |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |