CN104633933A - Condensation type normal-pressure hot water boiler - Google Patents
Condensation type normal-pressure hot water boiler Download PDFInfo
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- CN104633933A CN104633933A CN201510079995.XA CN201510079995A CN104633933A CN 104633933 A CN104633933 A CN 104633933A CN 201510079995 A CN201510079995 A CN 201510079995A CN 104633933 A CN104633933 A CN 104633933A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
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Abstract
The invention provides a condensation type normal-pressure hot water boiler capable of enhancing heat exchange effect and lowering outlet smoke temperature. The condensation type normal-pressure hot water boiler comprises a boiler shell, a rear smoke box and a condensation energy saver, wherein the rear smoke box is positioned in the boiler shell, and the condensation energy saver is connected with the rear smoke box. A boiler water outlet pipe orifice and a boiler air communication pipe orifice are arranged on the boiler shell. The condensation energy saver and the rear smoke box are connected with a boiler water inlet pipe orifice. The condensation energy saver is connected with a condensation energy saver water inlet pipe orifice through a condensation energy saver water inlet pipe, and is also connected with a condensation energy saver water outlet pipe orifice. The condensation type normal-pressure hot water boiler further comprise two pipelines, one pipeline is connected with the boiler water outlet pipe orifice and the boiler water inlet pipe orifice, and the other pipeline is connected with a heat exchanger. The heat exchanger is connected with the condensation energy saver water outlet pipe orifice and the condensation energy saver water inlet pipe orifice.
Description
Technical field
The present invention relates to a kind of hot-water boiler, especially a kind of condensing normal-pressure hot-water boiler.
Background technology
Conventional exhaust gas temperature is generally more than 150 DEG C, this temperature is far above flue gas aqueous dew point temperature, and a large amount of obvious heat of smoke is not only taken away in smoke evacuation, the more important thing is that in flue gas, steam latent heat is not fully utilized, the thermal efficiency is lower, does not meet the policy of China's energy-saving and emission-reduction.Condensing boiler adopts efficient burning technology, can effectively reduce burning excess air coefficient, improves combustion of natural gas efficiency, reduces NOx and generates and discharge, be conducive to water vapor condensation in flue gas simultaneously; Adopt smoke heat energy degree of depth cooling technology, exhaust gas temperature is dropped to flue gas dew point temperature (or water dew point) below by configuration heat energy utilization equipment, not only can recycle smoke evacuation sensible heat, also can utilize a large amount of latent heats of vaporization of releasing during the steam condensation produced during combustion of natural gas, economize energy, condensation water is to the CO2 in flue gas simultaneously, and the pernicious gases such as NOx, SOx also have certain absorbing and removing effect.
Namely the split type condensing normal pressure hot water boiler occurred on the market is at present install condensation segment heat exchanger additional after conventional atmospheric hot-water boiler.Conventional plate-type condensation energy-saving device heat exchanging part is 316 or 321 stainless steel manufactures, high expensive, and technique relative complex, needs masterplate manufacture, therefore on the high side, be not as large as trumpet cooler potentiality in popularizing; Tubular type condensation energy-saving appliance commercially accounts for main flow low level, and it adopts the extended surface enhanced heat transfer component such as finned tube, by fin reinforcing flow-disturbing, increases convection transfer rate, increases heat exchange area simultaneously thus realizes the object of augmentation of heat transfer.But conventional tubular condensation energy-saving device has following defect: 1. diameter phi 32 base tube that even diameter is larger generally selected by finned tube base tube.The energy-saving appliance of same profile, base tube diameter is larger, although fin external diameter is comparatively large, stringing quantity is few, and cause total heat exchange area little, heat transfer effect is poor; 2. shell generally chooses all steel manufacture (some even finned tube also adopt all steel), greatly increases manufacturing cost; Finned tube is multiplex ratio-frequency welding formula then, high frequency welded fin-tube processed complex, and produce power consumption large, manufacturing cost is also very high; 3. adjacent two rows pipe is dislocated layout, and adopt normal bend to connect adjacent two rows pipe, elbow and horizontal direction angle are generally between 45 ° to 60 °, and therefore adjacent two rows tube pitch is relevant with elbow radius.This kind of arrangement is used by most energy-saving appliance manufacturer, but this connected mode can cause adjacent two rows tube pitch bigger than normal, and energy-saving appliance circulation area is large, and heat exchanging effect creates weakening to a certain extent.And all there is same problem in two kinds of traditional condensation energy-saving appliance application on normal-pressure hot-water boiler, namely compared with vacuum phase changing hot water boiler, normal-pressure hot-water boiler return water temperature (normal-pressure hot-water boiler return water temperature 70 DEG C higher than vacuum phase changing hot water boiler return water temperature, vacuum phase changing hot water boiler return water temperature 50 DEG C), normal-pressure hot-water boiler backwater water temperature (i.e. boiler feed water water temperature) and exhaust gas temperature have a narrow range of temperature, cause the former to can not show a candle to the latter by condensation effect, its competitiveness is reduced widely.
Summary of the invention
The invention provides a kind of condensing normal-pressure hot-water boiler strengthening heat transfer effect, reduce outlet cigarette temperature.
Realize the condensing normal-pressure hot-water boiler of the object of the invention, comprise boiler jacket, the rear smoke box being positioned at boiler jacket and the condensation energy-saving device be connected with rear smoke box; Described boiler jacket is respectively equipped with boiler discharging tube mouth and boiler leads to the air mouth of pipe, described condensation energy-saving device and rear smoke box are connected a boiler feed water mouth of pipe jointly, described condensation energy-saving device also connects condensation energy-saving device water inlet pipe mouth by condensation energy-saving device water inlet pipe, and described condensation energy-saving device also connects condensation energy-saving device effluent pipe mouth;
Also comprise two pipelines, a pipeline is connected with the boiler feed water mouth of pipe with boiler discharging tube mouth, and another pipeline is connected with heat exchanger, and heat exchanger is connected with condensation energy-saving device water inlet pipe mouth respectively at condensation energy-saving device effluent pipe mouth.
The base tube of described condensation energy-saving device is the path finned tube that diameter is less than 32mm.
Described boiler jacket comprises the front shell and back shell of welding and being stitched together, and the material of described front shell is Q235A steel plate, and the material of described back shell is 316L stainless-steel sheet, and the centre of described boiler jacket is provided with a stainless steel breviseptum.
The side of described condensation energy-saving device is provided with left collector, and opposite side is provided with right collector, and described left collector connects upper collecting chamber, and described right collector connects lower header, and described upper collecting chamber connects condensation energy-saving device effluent pipe mouth, and described lower header connects condenser water inlet pipe mouth.
The beneficial effect of condensing normal-pressure hot-water boiler of the present invention is as follows:
(1) condensing normal-pressure hot-water boiler of the present invention selects the finned tube of minor diameter base tube, and tube bank can be made to arrange more intensive, tube pitch is less, more, and the heat exchange gross area is larger; The steel-aluminum composite fin tube that first half adopts, the outer aluminium coating of its base tube, fin is also suppressed by aluminium flake, and the thermal conductivity of aluminium is far above iron, and therefore heat-transfer effect is far better than common high frequency welded fin-tube.Therefore heat transfer effect will increase substantially.
(2) before and after shell, material segmentation manufacture replaces overall stainless steel manufacture, and latter half just uses stainless steel pipe with wound fin, has greatly saved manufacturing cost; Respectively there is galvanized pipe drainpipe and a fabricating drainpipe made from stainless steel front and back, sectional draining; Middle increase stainless steel breviseptum, can prevent back segment acid condensate water from flowing into leading portion corrosion front carbon steel base plate.
(3) elbow changes the pipe connecting same row of horizontal into, and this way can eliminate the impact of traditional elbow on adjacent two rows spacing, significantly can shorten adjacent two rows tube pitch, tube bank is arranged more intensive, strengthening forced convective heat transfer of flue effect.Header adopts the two intubate of hoop and homonymy many headers structure, and (visual water velocity increases cloth header separately, two, side not in a drawings attached), greatly can reduce the water flow velocity in minor diameter base tube finned tube, enhanced heat exchange effect, (it is better that this kind of way is used in effect on the pipeline containing water pump to reduce water resistance, can pump energy consumption be reduced, save user power utilization expenditure).
(4) two kinds of pipeline connecting modes are provided to select for user: when condensation energy-saving device combines heat exchange, another pipeline periodical feeding of boiler with an external heat exchanger (boiler go out/backwater water temperature is still 95 DEG C/70 DEG C), external heat exchanger backwater water temperature (i.e. condensation energy-saving device water inlet water temperature) more original boiler blow-down water water temperature (70 DEG C) is low, and minimumly reaches 40 DEG C.Therefore in condensation energy-saving organ pipe, water temperature and the boiler export flue-gas temperature temperature difference increase, and enhance condensation energy-saving device heat transfer effect, reduce outlet cigarette temperature, have reclaimed the heat of condensed water in flue gas larger; By doing experiment to 900,000 kilocalories/hours condensation normal-pressure hot-water boiler, when condensation energy-saving device connects external heat exchanger, boiler whole efficiency improves 10%; When condensation energy-saving device is directly connected to boiler, boiler whole efficiency improves 7%.
Accompanying drawing explanation
Fig. 1 is the structural representation of condensing normal-pressure hot-water boiler of the present invention.
Fig. 2 is the piping diagram of condensing normal-pressure hot-water boiler of the present invention.
Fig. 3 is the structural representation of the condensation energy-saving device of condensing normal-pressure hot-water boiler of the present invention.
Detailed description of the invention
As shown in Figure 1, 2, condensing normal-pressure hot-water boiler of the present invention, comprises boiler jacket 2, the rear smoke box 1 being positioned at boiler jacket 2 and the condensation energy-saving device 3 be connected with rear smoke box 1; Described boiler jacket 2 is respectively equipped with boiler discharging tube mouth 5 and boiler leads to the air mouth of pipe 6, described condensation energy-saving device 3 is connected a boiler feed water mouth of pipe 7 jointly with rear smoke box 1, described condensation energy-saving device 3 also connects condensation energy-saving device water inlet pipe mouth 8 by condensation energy-saving device water inlet pipe 4, and described condensation energy-saving device 3 also connects condensation energy-saving device effluent pipe mouth 9;
Also comprise two pipelines, a pipeline is connected with the boiler feed water mouth of pipe 7 with boiler discharging tube mouth 5, and another pipeline is connected with heat exchanger, and heat exchanger is connected with condensation energy-saving device water inlet pipe mouth 8 respectively at condensation energy-saving device effluent pipe mouth 9.
The base tube of described condensation energy-saving device 3 is the path finned tube that diameter is less than 32mm.
Described boiler jacket 2 comprises the front shell and back shell of welding and being stitched together, and the material of described front shell is Q235A steel plate, and the material of described back shell is 316L stainless-steel sheet, and the centre of described boiler jacket is provided with a stainless steel breviseptum.
As shown in Figure 3, the side of described condensation energy-saving device is provided with left collector 31, opposite side is provided with right collector 33, described left collector 31 connects upper collecting chamber 32, described right collector 33 connects lower header 34, described upper collecting chamber connects 32 and connects condensation energy-saving device effluent pipe mouth 9, and described lower header 34 connects condenser water inlet pipe mouth 8.
When retain traditional waterway circulating-boiler blow-down water (water inlet) be introduced into energy-saving appliance enter boiler again, increasing new pipeline selects connection-condensation energy-saving device to connect external heat exchanger for user, namely use two water routes: boiler water-in and water-out circulation waterway, condensation energy-saving device and external heat exchanger (be such as connected to the plate type heat exchanger of user or participate in another water circulation pipe of user directly) water-in and water-out circulation waterway simultaneously.Pipeline establishes bypass simultaneously, controls turnover energy-saving appliance water temperature by regulating the discharge entering energy-saving appliance.
Embodiment recited above is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; do not departing under the present invention designs spiritual prerequisite; the various distortion that the common engineers and technicians in this area make technical solution of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (4)
1. a condensing normal-pressure hot-water boiler, is characterized in that: comprise boiler jacket, the rear smoke box being positioned at boiler jacket and the condensation energy-saving device be connected with rear smoke box; Described boiler jacket is respectively equipped with boiler discharging tube mouth and boiler leads to the air mouth of pipe, described condensation energy-saving device and rear smoke box are connected a boiler feed water mouth of pipe jointly, described condensation energy-saving device also connects condensation energy-saving device water inlet pipe mouth by condensation energy-saving device water inlet pipe, and described condensation energy-saving device also connects condensation energy-saving device effluent pipe mouth;
Also comprise two pipelines, a pipeline is connected with the boiler feed water mouth of pipe with boiler discharging tube mouth, and another pipeline is connected with heat exchanger, and heat exchanger is connected with condensation energy-saving device water inlet pipe mouth respectively at condensation energy-saving device effluent pipe mouth.
2. condensing normal-pressure hot-water boiler according to claim 1, is characterized in that: the base tube of described condensation energy-saving device is the path finned tube that diameter is less than 32mm.
3. condensing normal-pressure hot-water boiler according to claim 1, it is characterized in that: described boiler jacket comprises the front shell and back shell of welding and being stitched together, the material of described front shell is Q235A steel plate, the material of described back shell is 316L stainless-steel sheet, and the centre of described boiler jacket is provided with a stainless steel breviseptum.
4. according to the arbitrary described condensing normal-pressure hot-water boiler of claim 1 ~ 3, it is characterized in that: the side of described condensation energy-saving device is provided with left collector, opposite side is provided with right collector, described left collector connects upper collecting chamber, described right collector connects lower header, described upper collecting chamber connects condensation energy-saving device effluent pipe mouth, and described lower header connects condenser water inlet pipe mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079995.XA CN104633933A (en) | 2015-02-15 | 2015-02-15 | Condensation type normal-pressure hot water boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079995.XA CN104633933A (en) | 2015-02-15 | 2015-02-15 | Condensation type normal-pressure hot water boiler |
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| CN104633933A true CN104633933A (en) | 2015-05-20 |
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| CN201510079995.XA Pending CN104633933A (en) | 2015-02-15 | 2015-02-15 | Condensation type normal-pressure hot water boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974303A (en) * | 2019-04-16 | 2019-07-05 | 廊坊一萍锅炉保养工程有限公司 | A kind of gas-fired water heating boiler energy-saving appliance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195052A (en) * | 1983-04-15 | 1984-11-06 | Matsushita Electric Ind Co Ltd | Hot-water boiler |
| CN201155780Y (en) * | 2008-01-24 | 2008-11-26 | 张伟 | Boiler heating system capable of fully utilizing flue gas residual heat |
| CN201672676U (en) * | 2010-04-26 | 2010-12-15 | 扬州晨光特种设备有限公司 | Gas boiler flue-gas vaporization latent heat recycling device |
| CN202885254U (en) * | 2012-10-19 | 2013-04-17 | 北京北燃供热有限公司 | Efficient condensation waste heat recovery system device for gas-fired boiler smoke |
| CN204494805U (en) * | 2015-02-15 | 2015-07-22 | 广州贝龙环保热力设备股份有限公司 | Condensing normal-pressure hot-water boiler |
-
2015
- 2015-02-15 CN CN201510079995.XA patent/CN104633933A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59195052A (en) * | 1983-04-15 | 1984-11-06 | Matsushita Electric Ind Co Ltd | Hot-water boiler |
| CN201155780Y (en) * | 2008-01-24 | 2008-11-26 | 张伟 | Boiler heating system capable of fully utilizing flue gas residual heat |
| CN201672676U (en) * | 2010-04-26 | 2010-12-15 | 扬州晨光特种设备有限公司 | Gas boiler flue-gas vaporization latent heat recycling device |
| CN202885254U (en) * | 2012-10-19 | 2013-04-17 | 北京北燃供热有限公司 | Efficient condensation waste heat recovery system device for gas-fired boiler smoke |
| CN204494805U (en) * | 2015-02-15 | 2015-07-22 | 广州贝龙环保热力设备股份有限公司 | Condensing normal-pressure hot-water boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974303A (en) * | 2019-04-16 | 2019-07-05 | 廊坊一萍锅炉保养工程有限公司 | A kind of gas-fired water heating boiler energy-saving appliance |
| CN109974303B (en) * | 2019-04-16 | 2024-04-26 | 廊坊一萍锅炉保养工程有限公司 | Energy-saving device for gas-fired hot water boiler |
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Application publication date: 20150520 |