CN86208419U - Normal pressure boiler and its heat-circulation system - Google Patents
Normal pressure boiler and its heat-circulation system Download PDFInfo
- Publication number
- CN86208419U CN86208419U CN 86208419 CN86208419U CN86208419U CN 86208419 U CN86208419 U CN 86208419U CN 86208419 CN86208419 CN 86208419 CN 86208419 U CN86208419 U CN 86208419U CN 86208419 U CN86208419 U CN 86208419U
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- boiler
- heat
- water
- normal pressure
- circulation system
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Abstract
The utility model discloses a normal pressure boiler and a heat-circulation system thereof. The normal pressure boiler and a heat-circulation system thereof is suitable for the heat supply of central heating. The normal pressure boiler overcomes the disadvantage that a pressurized boiler is easy to explode, and the top part of the normal pressure boiler and a heat-circulation system thereof is connected with a steam fitter directly communicated with atmosphere for ensuring the boiler can keep normal pressure under any state. The upper part of the liquid level of the boiler is kept with certain space via an overflow pipe. The utility model has the advantages of long service life, low cost, simple manufacturing technique, no explosion risk, etc. The normal pressure boiler and a heat-circulation system thereof adopts the mode of bottom running and top supply, a circulation water pump is used for pumping water from the boiler to supply a heat exchange network. The circulation water pump is provided with a bypass return passage for eliminating negative-pressure in front of the pump.
Description
The utility model relates to a kind of fluid heater and heat circulating system thereof with thermal source, more clearly says to relate to central heating hot-water boiler and heat circulating system thereof.
Hot-water boiler is the central heating conventional utility boiler, and is the hot water under pressure boiler, and its design pressure is generally 4 kilograms per centimeter
2～7 kilograms per centimeter
2Therefore, country on material selection, processing and inspection machine and method, has certain demand of technical standard to boiler maker.However, after hot-water boiler used certain phase, boiler inner wall corrosion compressive resistance reduced, and has hidden peril of explosion.For eliminating this potential hidden peril of explosion, hot-water boiler must be scrapped in advance, thereby causes many materials and construction waste.In addition, because existing hot water under pressure boiler cut protection device is perfect inadequately, run into power failure or other reason, water circulating pump quits work.Recirculated water stops to flow in the system at this moment, and ember is vaporized the interior water of boiler rapidly in the burner hearth, produces a large amount of steam.Because boiler is a closed cycle system, the steam flow after the vaporization clashes into the furnace wall fiercely, causes body of heater to tremble, the welded tube cracking, and boiler can be blasted when serious.In sum, the hot-water boiler that is heated is because of extended active duty, or has a power failure, or misoperation, all may cause the boiler pressurized too high and produce and break or explode.
One of the utility model purpose provides a kind of novel central heating normal-pressure boiler, during this boiler operatiopn, is in atmospheric pressure state all the time, does not have any explosion danger, and long service life, cost are low.
Two of the utility model purpose is to set up the heat circulating system that comprises normal-pressure hot-water boiler.
One of the utility model purpose is achieved in that drum, water level juice, tedge, down-comer and fire tube that normal-pressure hot-water boiler adopts and now uses boiler identical.Its difference is that this boiler erection has steam releasing tube that communicates with atmosphere and the overflow pipe of controlling liquid level in the stove.When making boiler operatiopn, pool gas tube is in atmospheric pressure state all the time.Overflow pipe control boiler liquid level, certain space is left in assurance body of heater inside.The pool gas tube and the overflow pipe other end are preferably with flashback tank.
Two of the utility model purpose utilizes normal-pressure hot-water boiler to realize, comprises that the normal-pressure boiler heat circulating system is made up of water circulating pump, heat exchange network, expansion tank and feed pipe thereof and return pipe.In heat circulating system when work,, water circulating pump is taken out boiler hot-water and is adopted descending (referring to the accompanying drawing) mode of giving that goes up, and forces hot water at the network system internal circulation heat-exchanging, and distributes to down-comer by expansion tank through return pipe and enter in the boiler and heat.Because this system adopts descending going up to the mode heat supply, there is negative pressure before the water circulating pump,, guarantees that the preceding hot water of pump is because of the excessive generation vaporization of negative pressure before the pump for eliminating this negative pressure, make water pump idle running and impeller cavitation, be connected to the circulation bypass circulation between water circulating pump input, the output.
Accompanying drawing is normal-pressure hot-water boiler and heat circulating system structural representation thereof.
Introduce the utility model embodiment below in conjunction with accompanying drawing.Select for use common iron to make drum (2), its Lower Half is equipped with down-comer (6), tedge (5); Its first half is equipped with boiler feed water position meter (3), feed pipe (8) and return pipe (14), and feed pipe (8) output is connected to water pump and directly extracts hot water in the boiler, and return pipe (14) has an elbow that backwater is delivered to boiler bottom to reheat.One steam releasing tube (1) that communicates with atmosphere is arranged at this boiler top, and the end of steam releasing tube feeds in the flashback tank (7a).Lean on upper boiler into to also have termination that the overflow pipe (4) of flashback tank (7b) is arranged, overflow pipe guarantees that boiler liquid level is in the certain level position all the time, makes boiler leave certain headroom.During the boiler hot operation, the water vapour of generation enters atmosphere through steam releasing tube (1) by flashback tank (7a) at any time, and the maintenance boiler is an atmospheric pressure state.For reducing the boiler hot-water loss, circulating water temperature preferably is controlled at about 95 ℃.
In the normal-pressure hot-water boiler heat circulating system, except that boiler had its These characteristics, its heat circulating system was different with the pressurized boiler circulatory system.Recirculated water in the heat exchange network (12) circulate from bottom to top (referring to accompanying drawing).Water circulating pump (9) input, output two ends pipeline are connected to the bypass circulation (10) of band control valve, the control valve limit return flow water yield.The input of water circulating pump (9) and feed pipe (8) join, and control valve (11) against the current is housed between the output pipeline of water circulating pump (9) and the heat exchange network (12).Hot water enters expansion tank (13) through heat exchange network (12) and extraneous heat exchange, gets back to boiler through return pipe (14).Circulation reaches the heat exchange purpose so repeatedly.
Because there is not the compressive resistance problem in normal-pressure hot-water boiler, boiler can use till the corrosion leakage, and can continue to use after the leakage repair welding. So normal-pressure hot-water boiler can be used for existing boiler improvement, prolonged boiler service life. And normal-pressure hot-water boiler manufacturing process and equipment are simple, and weld seam can not taken pictures and ultrasonic examination as X-ray. The selection of material is extensive, can adopt A3、A
3FEtc. general road low carbon steel plate and seamed, seamless common low carbon steel pipe, cost is lower than the cost of hot water under pressure boiler of the same type.
Claims (4)
1, a kind of normal-pressure hot-water boiler, comprise assemblies such as drum [2], water level meter [3], tedge [5], down-comer [6] and fire tube, it is characterized in that this boiler top is connected to the steam releasing tube [1] that communicates with atmosphere, and the overflow pipe [4] that keeps boiler liquid level be housed.
2, boiler according to claim 1 is characterized in that the steam releasing tube (1) of this boiler and overflow pipe (4) one ends inject in flashback tank (7a, the 7b) water.
3, utilize the heat circulating system of above-mentioned normal-pressure hot-water boiler, it is characterized in that being connected between the input of water circulating pump (9) of this system and the output circulation bypass circulation (10) that control valve is housed.
4, as heat circulating system as described in the claim 3, it is characterized in that being equipped with between water circulating pump (9) and the heat exchange network (12) control valve (11) against the current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208419 CN86208419U (en) | 1986-12-02 | 1986-12-02 | Normal pressure boiler and its heat-circulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208419 CN86208419U (en) | 1986-12-02 | 1986-12-02 | Normal pressure boiler and its heat-circulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86208419U true CN86208419U (en) | 1987-09-23 |
Family
ID=4810635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86208419 Withdrawn CN86208419U (en) | 1986-12-02 | 1986-12-02 | Normal pressure boiler and its heat-circulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86208419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800554A (en) * | 2018-05-25 | 2018-11-13 | 中山市曼卡热能科技有限公司 | A kind of intelligent frequency-conversion heat accumulation electric hot water module integrated stove |
-
1986
- 1986-12-02 CN CN 86208419 patent/CN86208419U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800554A (en) * | 2018-05-25 | 2018-11-13 | 中山市曼卡热能科技有限公司 | A kind of intelligent frequency-conversion heat accumulation electric hot water module integrated stove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| 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 |