CN2116171U - Water boiler with varied cycling means - Google Patents
Water boiler with varied cycling means Download PDFInfo
- Publication number
- CN2116171U CN2116171U CN 92211135 CN92211135U CN2116171U CN 2116171 U CN2116171 U CN 2116171U CN 92211135 CN92211135 CN 92211135 CN 92211135 U CN92211135 U CN 92211135U CN 2116171 U CN2116171 U CN 2116171U
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- water
- boiler
- hot
- forced circulation
- water boiler
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Abstract
The utility model provides a hot-water boiler with a device which can adjust the circulation method. The utility model is characterized in that a forced circulation loop in the hot-water boiler which adopts simultaneously the natural circulation method and the forced circulation method is additionally provided with a down-comer which can open and close rapidly an adjusting valve. When the boiler is normally operated, the adjusting valve is closed, and the boiler water uses the forced circulation method to conduct. When the power is cut and the boiler is stopped by damping the fire and a pump is stopped, the adjusting valve is opened, and the radiation heating surface and the convection heating surface compose two natural circulation loops. The generation of the phenomena that the boiler water vaporizes or a boiler tube deforms because of the overheating can be prevented or be avoided effectively.
Description
A kind of hot-water boiler with self-protection.
Hot-water boiler, its water endless form is
With the device of forced circulation endless form, form two natural convection loops in the pot when making boiler power failure suddenly or banking fire termination of pumping, like this, the circulation of heating surface water just can not stagnated, and just can not cause overheating deforming yet.
The utility model is to realize this purpose by install the down-comer that has control valve that can fast opening and closing additional on the forced circulation loop.The technical solution of the utility model is as follows: adopt pure forced circulation mode or adopt Natural Circulation simultaneously and the pressure-bearing or unpressurized hot water boiler of forced circulation mode in, install a kind of device of adjustable endless form additional.But this adjustable device can be the down-comer of the control valve that fast opening and closing is housed of at least one, also can adopt and get the down-comer that other regulates form.Boiler is divided into parts such as upper and lower drum, water inlet collection case, water-cooling wall (or water-cooled grate), convection bank, and this adjustable apparatus is installed between the water inlet collection case and upper drum in forced circulation loop.
In order to carry out the water circulation better, also can load onto the packing less deflector in both sides of flute profile (or semicircle) in exit, forced circulation loop.
Narrate an embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in drawings, this is a hot-water boiler that adopts the double-layer grate burner.Fig. 1. be the structural representation of boiler; Fig. 2 is the A-A view of Fig. 1.
Among the figure, 1 is water inlet collection case, 2 water-cooled grates, 3 down-comers, 4 control valves, 5 upper drums, 6 deflectors, 7 convection banks, 8 lower drums.
Backwater is distributed to water-cooled grate 2 through water inlet collection case 1, and pot water carries out in the forced circulation mode in water-cooled grate 2, enter upper drum 5 after, Natural Circulation in the natural convection loop of forming by upper drum 5, convection bank 7 and lower drum 8 again.In upper drum 5, mix the system that sends at last.The hot-water boiler that existing Natural Circulation and forced circulation combine mostly is to adopt this frame mode.The utility model has increased the down-comer 3 that is not heated between upper drum 5 and water inlet collection case 1, and has installed a control valve 4 that is merely able to rapid keying in down-comer 3 additional.When boiler normally moved, control valve 4 was closed, and the endless form of pot water still as previously mentioned.When boiler has a power failure suddenly or normally banking fire blowing out water circulating pump shuts down, valve 4 can be opened rapidly.At this moment, just form two natural convection loops in the pot: a natural convection loop is by upper drum 5, and water inlet collection case 1, water-cooled grate 2 and down-comer 3 are formed; A natural convection loop is by upper drum 5, and lower drum 8 and convection bank 7 are formed.Thereby after having avoided water circulating pump to stop, former forced circulation loop feature is owing to water circulation stopping to take place vaporization or boiler tube overheating deforming phenomenon.
Total actual internal area of down-comer can be 1/4～1/5 of tedge
The utility model has also installed deflector 6 additional in upper drum, deflector is that flute profile (or semicircle) covers on exit, forced circulation loop, the blow-by of deflector both sides, stretch into the decline zone of natural convection loop, it guides the pot water of forced circulation loop outlet into natural convection loop decline zone, thereby has guaranteed normally carrying out of water circulation more effectively.
The utility model is compared with the technology that existing hot-water boiler adopts has preferably the protective effect that self power-failure protecting and normal banking fire blowing out prevent pot water vapor and boiler tube overheating deforming.
Owing to installed the down-comer that has control valve additional on the forced circulation loop, when the water circulating pump stall, control valve is promptly opened, and forced circulation loop has originally just become natural convection loop.Like this, after the pot water in the boiler tube was heated and rises, the water at low temperature in the down-comer just can be replenished into immediately.Thereby cool off tube wall effectively, with the boiler tube overheating deforming of avoiding managing the water vapor of interior pot and causing thus.
Adopt the utility model boiler, its heating surface can fully be cooled off, but therefore time of prolonged boiler blowing out at night termination of pumping also, thus guarantee the night's rest of the resident boiler room near.
The endless form device of regulating of the present utility model preferably uses on the hot-water boiler that the Natural Circulation with drum device and forced circulation combine.On the pressure-bearing of thermal power 0.35MW～14MW or unpressurized hot water boiler, can adopt.No matter the forced circulation loop is radiation heating-surface or convection heating surface, can realize by the down-comer that installs the band control valve between drum and water inlet collection case additional.Wherein, total actual internal area of down-comer can be selected by 1/4～1/5 of tedge; Control valve should adopt gate valve (also available quick draining valves replaces), and its inside nominal diameter must not be less than 50mm.
Claims (4)
1, a kind of hot-water boiler that to regulate the endless form device that has, partly form by upper and lower drum, water inlet collection case, water-cooling wall (or water-cooled grate) and convection bank etc., it is characterized in that: the down-comer that the control valve that at least one band can open and close rapidly is housed between the water inlet collection case in forced circulation loop and upper drum.
2, hot-water boiler as claimed in claim 1 is characterized in that said down-comer, and its total actual internal area can be 1/4～1/5 of tedge.
3, hot-water boiler as claimed in claim 1 is characterized in that being equipped with in exit, forced circulation loop flute profile, the packing less deflector in both sides.
4, hot-water boiler as claimed in claim 3 is characterized in that said deflector is for semicircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92211135 CN2116171U (en) | 1992-01-21 | 1992-01-21 | Water boiler with varied cycling means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92211135 CN2116171U (en) | 1992-01-21 | 1992-01-21 | Water boiler with varied cycling means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2116171U true CN2116171U (en) | 1992-09-16 |
Family
ID=4956178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92211135 Granted CN2116171U (en) | 1992-01-21 | 1992-01-21 | Water boiler with varied cycling means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2116171U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113813B (en) * | 2006-06-07 | 2010-12-15 | 巴布考克及威尔考克斯公司 | Circulation system for sliding pressure steam generator |
| CN105890177A (en) * | 2015-12-24 | 2016-08-24 | 郑州锅炉股份有限公司 | Forced circulation hot water system with self-power-outage-protection function |
| CN108151303A (en) * | 2017-12-22 | 2018-06-12 | 王涛 | A kind of power economized boiler being moved easily |
-
1992
- 1992-01-21 CN CN 92211135 patent/CN2116171U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113813B (en) * | 2006-06-07 | 2010-12-15 | 巴布考克及威尔考克斯公司 | Circulation system for sliding pressure steam generator |
| CN105890177A (en) * | 2015-12-24 | 2016-08-24 | 郑州锅炉股份有限公司 | Forced circulation hot water system with self-power-outage-protection function |
| CN105890177B (en) * | 2015-12-24 | 2019-04-02 | 郑州锅炉股份有限公司 | With the forced circulation hot-water heating system from power-failure protecting function |
| CN108151303A (en) * | 2017-12-22 | 2018-06-12 | 王涛 | A kind of power economized boiler being moved easily |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |