CN100485262C - Self-adjusting energy-saving device for oil-burning gas-fired boiler - Google Patents
Self-adjusting energy-saving device for oil-burning gas-fired boiler Download PDFInfo
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- CN100485262C CN100485262C CNB2005101107929A CN200510110792A CN100485262C CN 100485262 C CN100485262 C CN 100485262C CN B2005101107929 A CNB2005101107929 A CN B2005101107929A CN 200510110792 A CN200510110792 A CN 200510110792A CN 100485262 C CN100485262 C CN 100485262C
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The invention relates to a self-adjusting energy-saving equipment for oil or gas boiler, comprising heat exchanger, mixer and temperature measurement control module. The heat exchanger comprised by shell and heat exchanger body in the shell is set at the outlet of high temperature flue gas at the tail of boiler. The mixer is connected with the heat exchanger by water pipe and comprises cylinder, compound pipe set at one inner side of cylinder, and a pair of multi-hole boards set at the other inner side of cylinder in a distance. Heat resistance at the flue gas side in temperature measurement control module is set in the shell at the inlet of flue gas in heat exchanger, heat resistance at the water supply side is set on the water pipe connected with heat exchanger and mixer, and temperature control adjustable valve is set at the inlet of heat source in mixer. The invention makes full use of the residual heat at the tail of boiler. It can improve the heat efficiency of boiler greatly and decrease the temperature of exhaust gas. It has the self-adjusting performance for temperature of heated metal wall at the tail of boiler so that condensation and corrosion in low temperature at the tail of boiler are not generated and the safe running of boiler is ensured.
Description
Technical field
The present invention relates to a kind of energy saver that is arranged on boiler tail, relate in particular to a kind of self-adjusting energy-saving device of oil-burning gas-fired boiler.
Background technology
China is an energy starved country, and particularly oily gentle resource is shortage especially, and therefore, the utilization rate energy-conservation and raising fuel of boiler is a long-term and important job.
The sulphur content that contains in the fuel oil of boiler generates SO after burning
2SO in the flue gas
2And water vapour and boiler tail metal wall---when huyashi-chuuka (cold chinese-style noodles) contacts, will condensation and form the sulfuric acid of liquid.At this moment on its metal wall, the metal wall is produced corrosion attached to heated surface at the end of boiler.
Though natural gas contains sulphur content hardly, natural gas can produce a large amount of water vapours after burning.The flue gas that has a large amount of water vapours is touching boiler tail metal wall---condensation during huyashi-chuuka (cold chinese-style noodles), the CO in the condensed water
2Composition also can form corrosion to the metal wall.Cause condensation and form the temperature of corrosion, be referred to as dew-point temperature.
Boiler tail not only increases the maintenance cost of boiler, but also causes the dangerous operation of boiler because of corrosion causes the damage of boiler heating surface, influences safety and production.In traditional boiler design, the designer often is set in the exhaust gas temperature of boiler than higher level, is exactly the cryogenic condensation corrosion for fear of boiler tail.
At present the exhaust gas temperature of the oil-burning gas-fired boiler that uses of China is generally all between 220 ℃～250 ℃, more have the part boiler exhaust gas temperature in addition can be up to more than 300 ℃, a large amount of energy is by having slatterned in vain.The oil-burning gas-fired boiler that has economizer of external import, its exhaust gas temperature is also more than 160 ℃.
Domestic traditional oil-burning gas-fired boiler structure is following two kinds of forms basically at present:
See also shown in Figure 1ly, a kind of boiler A is provided with chimney B in the smoke discharging exit of boiler tail, and this is the boiler primary structure form of domestic production, and it does not have the boiler of heated surface at the end of boiler, particularly low capacity, all is this arrangement form basically.The flue gas that boiler is discharged is directly discharged from chimney, and the exhaust gas temperature of this class boiler is at 220～250 ℃ usually, some exhaust gas temperature even up to more than 300 ℃.Cause a large amount of energy by having slatterned in vain.
See also shown in Figure 2ly, another kind has the oil-burning gas-fired boiler A of back-end surfaces, is provided with a heating surface parts C in the smoke discharging exit of the afterbody of boiler A, connects chimney B in the upper end of heating surface parts C.By heating surface parts C the waste heat of flue gas is used, to improve the thermal efficiency of boiler.Though boiler tail is provided with heating surface parts C, improved the thermal efficiency of boiler, but this arrangement form since consider the low excessively exhaust gas temperature of boiler tail often cause in the boiler smoke the gas that has corrosiveness with the contact process of boiler heating surface in condensation and dewfall, cause the damage of boiler heating surface and the dangerous operation of boiler, still the ratio of exhaust gas temperature design is higher, common exhaust gas temperature is between 160 ℃～180 ℃.In addition, when this boiler is in underrun, still can occur the phenomenon of heating surface parts C cold end corrosion inevitably, cause boiler normally not move.
Also have a kind of external condenser boiler, one energy saver is set at the afterbody of condenser boiler.It has made full use of the waste heat of boiler tail smoke evacuation, has improved the thermal efficiency of boiler greatly.Abroad, this condenser boiler overwhelming majority is used for family, promptly belongs to small-sized boiler for domestic.This boiler has been considered the problem of the cold end corrosion of boiler tail in design, this energy saver adopts reasonable corrosion-resistant stainless steel material usually, makes that the production cost of boiler is very high, is 2 times of conventional boiler at least.
Summary of the invention
The object of the present invention is to provide a kind of self-adjusting energy-saving device of oil-burning gas-fired boiler, be arranged on the afterbody of oil-burning gas-fired boiler row high-temperature flue gas, the high-temperature flue gas that boiler is discharged can reduce the exhaust gas temperature of boiler significantly by this device, improves the thermal efficiency of boiler; And can under any loading condiction of boiler, realize the self-regulation of the inflow temperature of boiler tail making boiler tail heated metal face can not cause condensation and cold end corrosion, guarantee the safe operation of boiler.
The object of the present invention is achieved like this:
A kind of self-adjusting energy-saving device of oil-burning gas-fired boiler is characterized in, this device comprises: heat exchanger, blender and thermometric Control Component;
Described heat exchanger is arranged on the flue gas discharge opening of boiler tail, and heat exchanger is made up of housing and the heat exchanger body that is arranged in the housing;
Described blender is positioned at the smoke inlet outside of heat exchanger, and blender is connected with heat exchanger by water pipe; Blender is made up of cylindrical shell, the one-to-many orifice plate that is arranged on the multiple tube of a side in the cylindrical shell and is disposed on opposite side in the cylindrical shell;
Described thermometric Control Component is made up of fume side thermal resistance, feedwater side thermal resistance and temperature control adjusting valve; The fume side thermal resistance is arranged in the housing at smoke inlet position of heat exchanger, and feedwater side thermal resistance is arranged on heat exchanger and the water pipe that blender is connected, and the thermal source that temperature control adjusting valve is arranged on blender enters the mouth.
In the self-adjusting energy-saving device of above-mentioned oil-burning gas-fired boiler, wherein, described heat exchanger body is made up of an offside collection case, a plurality of heat exchanger tube row; One offside collection case is corresponding at intervals to be provided with, and the side two ends of a side collection case are provided with water inlet interface and water outlet interface respectively therein; A plurality of heat exchanger tube rows are vertically set on the side collection case at intervals.
In the self-adjusting energy-saving device of above-mentioned oil-burning gas-fired boiler, wherein, described heat exchange pipe is made up of a pair of diversity case and Duo Gen flight heat exchanger tube; A pair of diversity case is corresponding at interval to be provided with, and many flight heat exchanger tubes are disposed between a pair of diversity case.
In the self-adjusting energy-saving device of above-mentioned oil-burning gas-fired boiler, wherein, all be made as cavity in side collection case, diversity case and the flight heat exchanger tube of described heat exchanger body, and connect mutually, in each cavity, pour into water.
In the self-adjusting energy-saving device of above-mentioned oil-burning gas-fired boiler, wherein, described multiple tube is made up of low-temperature receiver distributing pipe and heat exchange coil; The leading portion pipe of described low-temperature receiver distributing pipe is stretched outside cylindrical shell, and the back segment pipe is arranged in the cylindrical shell, vertically is provided with low-temperature receiver and enters interface on the leading portion pipe of low-temperature receiver distributing pipe, and a plurality of through holes evenly distribute on the back segment tube wall of low-temperature receiver distributing pipe; Described heat exchange coil is wound with inside and outside two-layer being nested with outside the back segment pipe of low-temperature receiver distributing pipe twist, the pipeline section that the high temperature heat source of heat exchange coil enters is arranged in the low-temperature receiver distributing pipe, thermal source upstream end at heat exchange coil connects an interface, and this interface is arranged on the leading portion mouth of pipe of low-temperature receiver distributing pipe.
In the self-adjusting energy-saving device of above-mentioned oil-burning gas-fired boiler, wherein, a plurality of through holes that distribute respectively on the described one-to-many orifice plate are oppositely arranged on the through hole mutual dislocation on the one-to-many orifice plate in the cylindrical shell.
In the self-adjusting energy-saving device of above-mentioned oil-burning gas-fired boiler, wherein, the front end of described cylindrical shell is provided with the thermal source output interface, and this interface is connected with the thermal source outlet of heat exchange coil, and the other end of cylindrical shell is provided with the low-temperature receiver output interface.
The self-adjusting energy-saving device of oil-burning gas-fired boiler of the present invention makes it compared with prior art owing to adopted above-mentioned technical scheme, has following advantage and good effect:
1. the afterbody of oil-burning gas-fired boiler row high-temperature flue gas can reduce the exhaust gas temperature of boiler significantly because self-adjusting energy-saving device of the present invention is set, and improves the thermal efficiency of boiler, can make the thermal efficiency of boiler improve 5 percentage points; The exhaust gas temperature of boiler can be reduced to 120 ℃, and can not cause condensation and cold end corrosion by boiler tail heated metal face under any loading condiction of boiler, guarantees the safe operation of boiler;
2. the present invention is owing to be provided with the thermometric Control Component, make this device have self-regulating function, the inflow temperature of heat exchanger of guaranteeing to be arranged on the afterbody of boiler is higher than dew-point temperature, therefore under the various load conditions of boiler, can not be subjected to condensation to occur on the metal hot side, thereby avoid the cryogenic condensation of boiler tail to corrode at the afterbody of boiler;
3. the present invention is owing to be provided with blender, and cold water and the thermal source in the heat exchange coil that the low-temperature receiver distributing pipe of blender is entered carry out heat exchange, and the one-to-many orifice plate of flowing through again carries out thermal balance, but from the more stable warm water input heat exchanger body of water outlet interface discharge temperature;
4. the present invention is owing to be provided with heat exchanger, and the high-temperature flue gas sufficient heat exchange that the water in the input heat exchanger body and housing are interior can effectively improve heat exchanger and discharge water temperature to boiler, thereby effectively raises the thermal efficiency of boiler;
5. cost of investment of the present invention is very low, the energy-saving efficiency height of boiler, and can reduce the maintenance rate and the maintenance cost of boiler, have good cost performance.
Description of drawings
Embodiment by following self-adjusting energy-saving device to oil-burning gas-fired boiler of the present invention can further understand purpose of the present invention, specific structural features and advantage in conjunction with the description of its accompanying drawing.Wherein, accompanying drawing is:
Fig. 1 is the structural representation of prior art boiler;
Fig. 2 is the structural representation that prior art has the oil-burning gas-fired boiler of back-end surfaces parts;
Fig. 3 is the self-adjusting energy-saving device structural representation of oil-burning gas-fired boiler of the present invention;
Fig. 4 is the heat exchange body structural representation of the self-adjusting energy-saving device of oil-burning gas-fired boiler of the present invention;
Fig. 5 is the heat exchanger tube row structural representation of the self-adjusting energy-saving device of oil-burning gas-fired boiler of the present invention;
Fig. 6 is the mixer structure schematic diagram of the self-adjusting energy-saving device of oil-burning gas-fired boiler of the present invention;
Fig. 7 is the composite pipe structure schematic diagram of the self-adjusting energy-saving device of oil-burning gas-fired boiler of the present invention;
Fig. 8 is the cross-sectional view of low-temperature receiver distributing pipe of the self-adjusting energy-saving device of oil-burning gas-fired boiler of the present invention;
Fig. 9 is the control flow chart of the self-adjusting energy-saving device of oil-burning gas-fired boiler of the present invention.
The specific embodiment
See also shown in Figure 3ly, the self-adjusting energy-saving device of oil-burning gas-fired boiler is made up of heat exchanger 1, blender 2 and thermometric Control Component 3; Heat exchanger 1 is arranged on the flue gas discharge opening of boiler tail, and heat exchanger 1 is made up of housing 11 and the heat exchanger bodies 12 that are arranged in the housing 11; Blender 2 is positioned at the smoke inlet outside of heat exchanger, and blender 2 is connected with heat exchanger 2 by water pipe 4; Thermometric Control Component 3 is made up of fume side thermal resistance 31, feedwater side thermal resistance 32 and temperature control adjusting valve 33; Fume side thermal resistance 31 (what this thermal resistance 31 adopted in the present embodiment is that model is the thermal resistance of Pt100) is arranged in the housing 11 at smoke inlet position of heat exchanger 1, feedwater side thermal resistance 32 (what this thermal resistance 32 adopted in the present embodiment is that model is the thermal resistance of Pt100) is arranged on heat exchanger 1 and the water pipe 4 that blender 2 is connected, and the thermal source that temperature control adjusting valve 33 (this temperature control adjusting valve adopts existing temperature control adjusting valve) is arranged on blender 2 enters the mouth.
Please cooperate referring to Fig. 4, shown in Figure 5, heat exchanger body 12 is made up of an offside collection case 121, a plurality of heat exchanger tube row 122; One offside collection case 121 is corresponding at intervals to be provided with, and the side two ends of a side collection case 121 are provided with water inlet interface 121a and water outlet interface 121b respectively therein; A plurality of heat exchanger tube rows 122 are vertically set on the side collection case 121 at intervals; Heat exchange pipe 122 is made up of a pair of diversity case 122a and Duo Gen flight heat exchanger tube 122b; A pair of diversity case 122a is corresponding at interval to be provided with, and many flight heat exchanger tube 122b are disposed between a pair of diversity case 122a; All be made as cavity in the side collection case 121 of heat exchanger body 12, diversity case 122a and the flight heat exchanger tube 122b, and connect mutually, in each cavity, pour into water.High-temperature flue gas sufficient heat exchange in water in the heat exchanger body 12 and the housing 11 can effectively improve heat exchanger 1 and discharge the water temperature of giving boiler.
Please cooperate referring to Fig. 6, Fig. 7, shown in Figure 8, blender 2 is made up of cylindrical shell 21, the multiple tube 22 that is arranged on sides in the cylindrical shell 21, the one-to-many orifice plate 23 that is disposed on opposite sides in the cylindrical shell 21.
The front end of the cylindrical shell 21 of blender 2 is provided with thermal source output interface 211, and this interface 211 is connected with the thermal source outlet of heat exchange coil 222, and the other end of cylindrical shell 21 is provided with output water interface 212.
The multiple tube 22 of blender 2 is made up of low-temperature receiver distributing pipe 221 and heat exchange coil 222; The leading portion pipe of described low-temperature receiver distributing pipe 221 is stretched outside cylindrical shell 21, the back segment pipe is arranged in the cylindrical shell 21, vertically be provided with low-temperature receiver and enter interface 221a on the leading portion pipe of low-temperature receiver distributing pipe 221, a plurality of through hole 221b evenly distribute on the back segment tube wall of low-temperature receiver distributing pipe 221; Described heat exchange coil 222 is wound with inside and outside two-layer being nested with outside the back segment pipe of low-temperature receiver distributing pipe 221 twist, the pipeline section 222a that the high temperature heat source of heat exchange coil 222 enters is arranged in the low-temperature receiver distributing pipe 221, thermal source upstream end at heat exchange coil 222 connects an interface 222b, and this interface 222b is arranged on the leading portion mouth of pipe of low-temperature receiver distributing pipe 221.
A plurality of through holes 231 that distribute respectively on the one-to-many orifice plate 23 of blender 2 are oppositely arranged on through hole 231 mutual dislocation on the one-to-many orifice plate 23 in the cylindrical shell 21 at interval.
Cold water that the low-temperature receiver distributing pipe 221 of blender 2 enters and the thermal source in the heat exchange coil 222 carry out heat exchange, and the one-to-many orifice plate 23 of flowing through again carries out thermal balance, from the more stable warm water input heat exchanger body 12 of water outlet interface 212 discharge temperatures.
The present invention the experiment proved that boiler tail causes that condensation is not only relevant with the temperature of flue gas, and with the temperature of cold water in the back-end surfaces very big relation is arranged.When flue-gas temperature is sufficiently high, the temperature of the heated metal wall of boiler tail will be higher than dew-point temperature, thereby not produce condensation; Equally, when the temperature of the water inlet that enters heat exchanger body is higher than condensation temperature, and flue-gas temperature condensation can not occur when not being very low yet.Obviously, with respect to not producing condensation, there are certain rules in flue-gas temperature and cold water temperature.
The present invention is according to this rule, can regulate the inflow temperature of boiler tail heated metal face automatically by the thermometric Control Component under different flue-gas temperatures, do not produce condensation to guarantee boiler boiler tail under any loading condiction.
See also shown in Figure 9, the principle of the self-regulating function of this energy-conservation device is: cold water that the low-temperature receiver distributing pipe 221 of blender 2 enters and the thermal source in the heat exchange coil 222 carry out heat exchange, the one-to-many orifice plate 23 of flowing through again, carry out thermal balance, from the more stable warm water input heat exchanger body 12 of water outlet interface 212 discharge temperatures; Heat exchanger body 12 can effectively improve heat exchanger 1 and discharge the water temperature of giving boiler from the water of blender 2 inputs and the high-temperature flue gas sufficient heat exchange in the housing 11.
After the thermal resistance 31 of flue gas one side in the heat exchanger 1 records flue-gas temperature signal in the heat exchanger 1, the temperature signal that records is delivered to the external control case;
The interior arithmetic unit of control cabinet that is arranged on the device outside carries out computing according to the flue-gas temperature signal in the heat exchanger 1, obtains the minimum feed temperature of blender water out;
Arithmetic unit in the outside control cabinet carries out temperature to the temperature control adjusting valve 33 of the thermal source input port that is arranged on blender 2 and sets;
The temperature control adjusting valve 33 automatic temperature signals that the thermal resistance 32 of one side of the water on the blender 2 is recorded compare then, and according to the result who contrasts, the input quantity of regulating thermal source automatically is up to the satisfied temperature that sets of the leaving water temperature of blender 2;
Changing load when boiler, as boiler when the underrun, the exhaust gas temperature of boiler changes, the arithmetic unit that the thermal resistance 31 of fume side feeds back to variation of temperature in the external control case at once in the heat exchanger 1 carries out computing again, and resets the minimum feed temperature of new blender delivery port; The temperature control adjusting valve of blender thermal source inlet readjusts the input quantity of thermal source according to the temperature of setting.Thereby the temperature of guaranteeing boiler tail is higher than dew-point temperature, under the various load conditions of boiler, can condensation not occur on the afterbody heated metal face of boiler, has avoided the cryogenic condensation corrosion of boiler tail.
In sum, self-adjusting energy-saving device of the present invention is arranged on the afterbody of oil-burning gas-fired boiler row high-temperature flue gas, can increase substantially the thermal efficiency of boiler, can make the thermal efficiency of boiler improve 5 percentage points; Reduce the exhaust gas temperature to 120 ℃ of boiler; Because the present invention has the function to the temperature self-regulating joint of the heated metal wall of boiler tail, can not cause condensation and cold end corrosion under any loading condiction of boiler, guarantees the safe operation of boiler.
Claims (7)
1. the self-adjusting energy-saving device of an oil-burning gas-fired boiler, it is characterized in that: described device comprises: heat exchanger (1), blender (2) and thermometric Control Component (3);
Described heat exchanger (1) is arranged on the flue gas discharge opening of boiler tail, and heat exchanger (1) is made up of housing (11) and the heat exchanger body (12) that is arranged in the housing (11);
Described blender (2) is positioned at the smoke inlet outside of heat exchanger, and blender (2) is connected with heat exchanger (1) by water pipe (4); Blender (2) is made up of cylindrical shell (21), the one-to-many orifice plate (23) that is arranged on the multiple tube (22) of a side in the cylindrical shell (21) and is disposed on the interior opposite side of cylindrical shell (21);
Described thermometric Control Component (3) is made up of fume side thermal resistance (31), feedwater side thermal resistance (32) and temperature control adjusting valve (33); Fume side thermal resistance (31) is arranged in the housing (11) at smoke inlet position of heat exchanger (1), feedwater side thermal resistance (32) is arranged on heat exchanger (1) and the water pipe (4) that blender (2) is connected, and the thermal source that temperature control adjusting valve (33) is arranged on blender (2) enters the mouth.
2. the self-adjusting energy-saving device of oil-burning gas-fired boiler as claimed in claim 1 is characterized in that:
Described heat exchanger body (12) is made up of an offside collection case (121), a plurality of heat exchanger tube row (122); One offside collection case (121) is corresponding at intervals to be provided with, and the side two ends of a side collection case (121) are provided with water inlet interface (121a) and water outlet interface (121b) respectively therein; A plurality of heat exchanger tube rows (122) are vertically set on the side collection case (121) at intervals.
3. the self-adjusting energy-saving device of oil-burning gas-fired boiler as claimed in claim 2 is characterized in that:
Described heat exchanger tube row (122) is made up of a pair of diversity case (122a) and many flight heat exchanger tubes (122b); A pair of diversity case (122a) is corresponding at interval to be provided with, and many flight heat exchanger tubes (122b) are disposed between a pair of diversity case (122a).
4. the self-adjusting energy-saving device of oil-burning gas-fired boiler as claimed in claim 3, it is characterized in that: all be made as cavity in the side collection case (121) of described heat exchanger body (12), diversity case (122a) and the flight heat exchanger tube (122b), and connect mutually, in each cavity, pour into water.
5. the self-adjusting energy-saving device of oil-burning gas-fired boiler as claimed in claim 1, it is characterized in that: described multiple tube (22) is made up of low-temperature receiver distributing pipe (221) and heat exchange coil (222); The leading portion pipe of described low-temperature receiver distributing pipe (221) is stretched outside cylindrical shell (21), the back segment pipe is arranged in the cylindrical shell (21), vertically be provided with low-temperature receiver and enter interface (221a) on the leading portion pipe of low-temperature receiver distributing pipe (221), a plurality of through holes (221b) evenly distribute on the back segment tube wall of low-temperature receiver distributing pipe (221); Described heat exchange coil (222) is wound with inside and outside two-layer being nested with outside the back segment pipe of low-temperature receiver distributing pipe (221) twist, the pipeline section (222a) that the high temperature heat source of heat exchange coil (222) enters is arranged in the low-temperature receiver distributing pipe (221), thermal source upstream end at heat exchange coil (222) connects an interface (222b), and this interface (222b) is arranged on the leading portion mouth of pipe of low-temperature receiver distributing pipe (221).
6. the self-adjusting energy-saving device of oil-burning gas-fired boiler as claimed in claim 1, it is characterized in that: a plurality of through holes (231) that distribute respectively on the described one-to-many orifice plate (23) are oppositely arranged on through hole (231) mutual dislocation on the one-to-many orifice plate (23) in the cylindrical shell (21).
7. the self-adjusting energy-saving device of oil-burning gas-fired boiler as claimed in claim 1, it is characterized in that: the front end of described cylindrical shell (21) is provided with thermal source output interface (211), this interface (211) is connected with the thermal source outlet of heat exchange coil (222), and the other end of cylindrical shell (21) is provided with low-temperature receiver output interface (212).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101107929A CN100485262C (en) | 2005-11-25 | 2005-11-25 | Self-adjusting energy-saving device for oil-burning gas-fired boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005101107929A CN100485262C (en) | 2005-11-25 | 2005-11-25 | Self-adjusting energy-saving device for oil-burning gas-fired boiler |
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| CN1971139A CN1971139A (en) | 2007-05-30 |
| CN100485262C true CN100485262C (en) | 2009-05-06 |
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| CNB2005101107929A Expired - Fee Related CN100485262C (en) | 2005-11-25 | 2005-11-25 | Self-adjusting energy-saving device for oil-burning gas-fired boiler |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221021B (en) * | 2008-01-07 | 2010-11-24 | 成琳国 | Flue gas condenser |
| CN101825275A (en) * | 2009-03-03 | 2010-09-08 | 史振玺 | Device for recycling waste heat of flue gas in power station boiler |
| CN102589133B (en) * | 2012-03-28 | 2014-04-02 | 哈尔滨红光锅炉总厂有限责任公司 | Full-backwater multichannel circulating energy saver for fuel gas hot-water boiler |
| CN104930689B (en) * | 2015-06-30 | 2017-07-18 | 孔令斌 | A kind of annular combustion chamber oil-burning gas-fired boiler |
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2005
- 2005-11-25 CN CNB2005101107929A patent/CN100485262C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 烟气露点温度与锅炉低温受热面的腐蚀. 沈鸿雁等.黑龙江电力，第24卷第2期. 2002 |
| 烟气露点温度与锅炉低温受热面的腐蚀. 沈鸿雁等.黑龙江电力，第24卷第2期. 2002 * |
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