CN202532522U - Isentropic air heat exchanger of boiler - Google Patents
Isentropic air heat exchanger of boiler Download PDFInfo
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- CN202532522U CN202532522U CN201220051235XU CN201220051235U CN202532522U CN 202532522 U CN202532522 U CN 202532522U CN 201220051235X U CN201220051235X U CN 201220051235XU CN 201220051235 U CN201220051235 U CN 201220051235U CN 202532522 U CN202532522 U CN 202532522U
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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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The utility model discloses an isentropic air heat exchanger of a boiler, and is characterized in that a heat release pipe system is arranged in an air flue of the boiler, a heat absorption pipe system is arranged in an inlet flue of the boiler, multiple groups of fin plates are fixedly arranged on both ends of the heat absorption pipe system and the heat release pipe system, the heat absorption pipe system and the heat release pipe system can form a circulating system through a pipeline, multiple headers and a valve, one header of the heat absorption pipe system is connected with an inlet header of a boiler economizer through the pipeline and a water inlet valve, and the header is further provided with a drainage pipe and a drainage valve; a heat release inlet header of the heat release pipe system is provided with a steam discharge pipe, and the steam discharge pipe is provided with a steam discharge valve; and the heat discharge pipe system and the header thereof are higher than the heat absorption pipe system and the header thereof. According to the utility model, the hot loss for smoke exhaust is greatly reduced, the adjusting capacity of the temperature of a smoke-wind system of the boiler is increased, the heat efficiency of the boiler is improved, the problems of corrosion and blockage of ammonium bisulfate generated by denitration are completely solved, and the energy consumption of the boiler is reduced.
Description
Technical field
The utility model relates to a kind of air heat exchanger that is used for boiler.
Background technology
The Chinese declaration in the meeting of Copenhagen in 2004 by reducing to 40% of carbon emission in 1996 to the year two thousand twenty China carbon emission reduction.Because boiler generally adopts the SCR denitration technology at present; So-called SCR denitration technology is exactly behind boiler economizer, above the rotary regenerative air heater, in the inlet flue duct denitrification apparatus to be set; Utilize 300 ℃～400 ℃ flue-gas temperatures behind the boiler economizer; Ammonia after under catalyst action, spraying into dilution and the nitrogen oxide generation chemical reaction in the former flue gas generate nitrogen and water vapour, reduce NO with this
XA discharging! Because the limitation of denitration technology, the escaping of ammonia of permission≤3ppmV in the design is not having reliable method of operating control the escaping of ammonia at present as yet in scope of design aspect the operation, and amount of ammonia slip generally exceeds standard! Because the sulfuric acid cyanogen ammonia that ammonia of escaping and boiler smoke reaction generate, its adiabatic condensation temperature raises with the rising of escape amount concentration, and the dense shape liquid after sulfuric acid cyanogen ammonia condenses had both had strong corrosivity; Bonding again smoke dust, and heat-exchanger rig of rotary regenerative air heater is only arranged at present in the denitrification apparatus downstream, the dense shape liquid after condensing is blocked in the narrow heating surface of air preheater; Thereby the air preheater heating surface should to be replaced by corrosion resistance strong but two-sided plating pottery heating surface that heat transfer coefficient is lower must increase whole heating surface area again, make exhaust gas temperature be in controlled area charactert; Guarantee safe operations such as downstream sack cleaner; Thereby cause the rotary regenerative air heater in downstream bigger because of the intensive heated face structure resistance that denitration increases, and because of condensing, sulfuric acid cyanogen ammonia becomes liquid mutually, and its result is stained with ash, burn into stops up the air preheater heating surface; Not only boiler cigarette-wind passage stops up; Heat loss due to exhaust gas is bigger, and boiler thermal output is lower, and the amplitude of accommodation of boiler cigarette temperature, wind-warm syndrome is limited; The compelled load down of boiler moves, and has increased the energy consumption of boiler fan and air-introduced machine.
The utility model content
The purpose of the utility model is the above-mentioned deficiency to prior art; A kind of constant entropy formula air heat exchanger of boiler is provided; It can not only significantly reduce heat loss due to exhaust gas, increases the regulating power of boiler air and gas system temperature, improve boiler thermal output, and alleviates former rotary regenerative air heater heat exchange pressure, thoroughly solves problems such as sulfuric acid cyanogen ammonia corrosion that denitration produces, obstruction; And reduce the boiler energy consumption, realize maximized energy-conservation, reduction of discharging.
For achieving the above object; The constant entropy formula air heat exchanger of the boiler of the utility model; It is characterized in that comprising the heat release piping be located in the outlet air crosswind road, boiler rotary regenerative air preheater top, be located in the inlet flue duct of boiler rotary regenerative air heater top and be positioned at the heat absorption piping below the denitrification apparatus; Heat absorption piping and heat release the piping all elbow through separately link to each other, and the both sides of absorb heat piping and heat release piping all are installed with array fin plate, and an end of the piping that absorbs heat links to each other with the inlet header that absorbs heat; This heat absorption inlet header links to each other with the boiler economizer inlet header through pipeline and water intaking valve, and this heat absorption inlet header also is provided with drainpipe and draining valve; The two ends of heat release piping link to each other with the condensate header with the heat release inlet header through pipeline respectively; The heat release inlet header links to each other with the other end of heat absorption piping; On the heat release inlet header, be provided with gland steam exhauster; On gland steam exhauster, be provided with exhaust steam valve, the condensate header is connected through pipeline with the heat absorption inlet header, and on this pipeline, is provided with control valve; Heat release inlet header, heat release piping and condensate header are higher than heat absorption inlet header and heat absorption piping.
When the utility model uses; Close draining valve; Open water intaking valve and exhaust steam valve, the water under high pressure in the economizer inlet header is injected heat absorption piping and heat release piping, have water to overflow that (will absorb heat piping and heat release piping and each inner air tube of purpose drives and use up until exhaust steam valve; Make and to have not condensing body formation steam binding and water plug in the circulation pipe; Guarantee steam Natural Circulation safety when being convenient to work), close water intaking valve and exhaust steam valve again, open draining valve and discharge water to requiring water level (water level is as the criterion to flood the heat absorption piping) to close draining valve again; At this moment all do not have water in the pipeline that the piping water level that absorbs heat is above and heat release piping, heat release inlet header and the condensate header, be certain vacuum state; Along with boiler heating, flue-gas temperature raises gradually in the inlet flue duct of rotary regenerative air heater top, and the water in the heat absorption piping is heated; According to blocking the law that such circulates; In the closed-loop path,,, realize the heat exchanging process that goes round and begins again of constant entropy with regard to the closed circulation process that can realize expanding with heat and contract with cold as long as occur low-temperature receiver and thermal source simultaneously; Rise after water is heated and vaporizes and get into heat release inlet header and heat release piping; Get into the condensate header through forming condensed water after the secondary wind heat exchange in heat release piping and the rotary regenerative air preheater outlet air crosswind road, condensate flows into heat absorption inlet header and heat absorption piping automatically under the effect of water level pressure head, thereby forms the steam Natural Circulation; Control valve makes water level keep stable in order to regulate condensing water flow; Secondary wind is heated the back and gets into the combustion-supporting or powder process of burner hearth through hot secondary air box; The fin plate of heat absorption piping and heat release piping both sides can increase heat transfer area, improves the heat exchange effect;
As the further improvement of the utility model, the array fin plate of said heat absorption piping and heat release piping both sides is equidistantly vertical fin plate of symmetry; Can balanced flue gas or air mass flow, play guide functions, reduce structural drag;
As the further improvement of the utility model, between the other end and the heat release inlet header of heat absorption piping, also be provided with the heat absorption outlet header, the pipeline that passes through of the outlet header that absorbs heat links to each other with the heat release inlet header with the heat absorption piping at two ends respectively; Can the balanced steam pressure that gets into the heat release inlet header;
As the further improvement of the utility model, the pipeline of the said connection heat absorption outlet header and the piping that absorbs heat is array pipe row, and every group of pipe row's both sides all are installed with equidistantly vertical fin plate of array symmetry; Steam in the pipe row is had saturated vapor certain degree of superheat, that volume is able to expand in this zone by the flue gas heating generation, can further improve the heat exchange effect, and vertically the fin plate can reduce structural drag;
As the further improvement of the utility model, said condensate header also links to each other with the boiler water wall lower collecting box through pipeline, and on this pipeline, is provided with emergency valve; When system's Natural Circulation goes wrong; Open water intaking valve and emergency valve, close control valve, the structural drag that the pressure head that utilizes the economizer inlet header to feed water deducts this device is still greater than the pressure in the boiler water wall lower collecting box; Therefore from the about 270 ℃ unsaturated water through the Steam Turbine Regenerative System heating of economizer inlet header supply; Behind this device, by becoming the saturated vapor with certain degree of superheat mutually, become about 290 ℃ unsaturated water mutually and directly get into the boiler water wall lower collecting box, the unsaturated water in drum, common downcomer gets into water-cooling wall heat absorption acting; System changes forced circulation into, has urgent defencive function;
As the further improvement of the utility model, between heat release inlet header and heat absorption inlet header, also be provided with double colored indicator, the two ends of double colored indicator link to each other with the heat absorption inlet header with the heat release inlet header respectively; Be convenient to observe the water level in the heat absorption piping;
The technological merit of the utility model is:
(1), behind newly-increased heat absorption piping and the heat release piping; Not only significantly reduce heat loss due to exhaust gas; And can realize the adjusting of boiler cigarette temperature, wind-warm syndrome by the water yield in the control heat absorption piping; Increase the regulating power of boiler air and gas system temperature; So boiler still can adopt the utility model device to keep constant exhaust gas temperature when winter, summer; Realize that thus boiler is not restricted by environment temperature, reduce heat loss due to exhaust gas, significantly improve boiler thermal output! Realize maximized energy-conservation, reduction of discharging;
(2), at present because of the boiler denitration, rotary regenerative air heater is compelled to increase heating surface, and heating surface under original spatial constraints because the intensive burn into that very easily causes is stained with ash, blockage problem; Existing because the flue gas after the denitration is after the utility model heat absorption; Cigarette temperature drop to 280 ℃～180 ℃ has alleviated the heat exchange pressure of rotary regenerative air heater, so former rotary regenerative air preheater heating surface not only need not increase but also can have loose bowels and reduce the heat transfer piece height; Change big ripple enamel heat transfer element; Increase actual internal area, thoroughly solve problems such as sulfuric acid cyanogen ammonia corrosion that denitration produces, obstruction, guarantee boiler safety, reliable, stable operation; Simultaneously because of the reduction of air preheater structural drag, send, the air-introduced machine energy consumption descends.
(3), former boiler powder process needs can not advance rotary regenerative air heater with a high-head wind at present; Directly a wind with the heating of this device directly is used for pulverized coal preparation system; Thereby significantly reduce the pressure reduction in the air preheater, solved the problem of leaking out of rotary regenerative air heater simultaneously.
In sum; The utility model can not only significantly reduce heat loss due to exhaust gas, increases the regulating power of boiler air and gas system temperature, improve boiler thermal output; And alleviate former rotary regenerative air heater heat exchange pressure, thoroughly solve problems such as sulfuric acid cyanogen ammonia corrosion that denitration produces, obstruction, and reduce the boiler energy consumption; Solve the problem of leaking out of rotary regenerative air heater simultaneously, realized maximized energy-conservation, reduction of discharging.
Description of drawings
Fig. 1 is the installation site sketch map of the utility model embodiment in steam generator system.
Fig. 2 is the structural representation of the utility model embodiment.
Fig. 3 is the structural representation of heat absorption piping among Fig. 2.
Fig. 4 is an I place enlarged drawing among Fig. 3.
Fig. 5 is the A-A cutaway view of Fig. 4.
Fig. 6 is the structural representation of heat release piping among Fig. 2.
Fig. 7 is an II place enlarged drawing among Fig. 6.
Fig. 8 is the B-B cutaway view of Fig. 7.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Extremely shown in Figure 8 by Fig. 1; The constant entropy formula air heat exchanger of this boiler; Comprise the heat release piping 2 be located in the outlet air crosswind road, boiler rotary regenerative air preheater 11 top 12, be located in the boiler rotary regenerative air heater 11 top inlet flue ducts 13 and be positioned at the heat absorption piping 1 of denitrification apparatus 14 belows; The pipe of heat absorption piping 1 and the heat release piping 2 all elbow pipeline through separately links to each other; Form coiled pipe, the both sides of heat absorption piping 1 and heat release piping 2 all are installed with the equidistant vertically fin plate 21 or 22 of array symmetry, and an end of heat absorption piping 1 links to each other with heat absorption inlet header 3 through pipeline; This heat absorption inlet header 3 links to each other with boiler economizer inlet header 15 through pipeline and water intaking valve 5; This heat absorption inlet header 3 also is provided with drainpipe and draining valve 4, and the other end of heat absorption piping 1 passes through four groups of pipes rows 7 and links to each other with heat absorption outlet header 6, and every group of pipe row's 7 both sides all are installed with the equidistant vertically fin plate 23 of array symmetry; The two ends of heat release piping 2 link to each other with condensate header 9 with heat release inlet header 8 through pipeline respectively; Heat release inlet header 8 links to each other through pipeline with heat absorption outlet header 6, on heat release inlet header 8, is provided with gland steam exhauster, on gland steam exhauster, is provided with exhaust steam valve 10; Condensate header 9 is connected through pipeline with heat absorption inlet header 3; And on this pipeline, being provided with control valve 16, condensate header 9 also links to each other with boiler water wall lower collecting box 17 through pipeline 19, and on this pipeline, is provided with emergency valve 18; Heat release inlet header 8, heat release piping 2 and condensate header 9 all are higher than heat absorption inlet header 3 and heat absorption piping 1; Between heat release inlet header 8 and heat absorption inlet header 3, also be provided with double colored indicator 20, the two ends of double colored indicator 20 link to each other with heat absorption inlet header 3 with heat release inlet header 8 respectively;
When the utility model uses; Close draining valve 4; Open water intaking valve 5 and exhaust steam valve 10; Water under high pressure in the economizer inlet header 15 is injected heat absorption piping 1 and heat release piping 2; There are 10 water to overflow that (will absorb heat piping 1 of purpose drives to the greatest extent with heat release piping 2 and each inner air tube until exhaust steam valve; Make and to have not condensing body formation steam binding and water plug in the circulation pipe; Guarantee steam Natural Circulation safety when being convenient to work); Close water intaking valve 5 and exhaust steam valve 10 again; Opening draining valve 4 discharges water to requiring water level (water level is as the criterion to flood heat absorption piping 1) to close draining valve 4 again; At this moment pipeline that the piping water level that absorbs heat is above and heat absorption outlet header 6; Heat release piping 2; All do not have water in heat release inlet header 8 and the condensate header 9, be certain vacuum state; Hydraulic pressure is higher herein for the reason that the utility model is intake from economizer inlet header 15; Realize forced circulation when being convenient to water inlet fast with urgent protection; Need not to use high-pressure circulation pump; Energy savings; And the water in the economizer inlet header 15 is to the soft water after the steam turbine acting; Ion concentration is few, and is less scaling, can ensure heat exchange effect of the utility model and long-term normal operation;
After the ignition of the boiler; The beginning baker; Input gas temperature in the rotary regenerative air heater inlet flue duct 13 raises from room temperature gradually; 1 heat absorption of heat absorption piping makes water boiling, the vaporization in it; Medium is a steam water interface; Former vacuum state place begins to raise and becomes malleation, as surpassing authorized pressure then by exhaust steam valve 10 steam discharge step-downs; At this moment do not open because of boiler fan, do not have low-temperature receiver, do not have the working medium shuttling movement in the device, the steam water interface that is all had certain pressure is full of;
Along with boiler heating, pressure fan is opened, and flue-gas temperature raises gradually in the inlet flue duct 13 of rotary regenerative air heater top; Water in the heat absorption piping 1 heats, according to the card law that such circulates, in the closed-loop path as long as occur low-temperature receiver and thermal source simultaneously; With regard to the closed circulation process that can realize expanding with heat and contract with cold; Realizing the heat exchanging process that goes round and begins again of constant entropy, rises and gets into heat release inlet header 8 and heat release piping 2 in the water vaporization back that is heated, and gets into condensate header 9 through forming condensed water after the secondary wind heat exchange in heat release piping 2 and the rotary regenerative air preheater outlet air crosswind road 12; The density of water is greater than steam; Condensate flows into heat absorption inlet header 3 and heat absorption piping 1 automatically under the effect of water level pressure head, working medium begins weak circulation, the slow increasing degree of pressure in the device; Secondary wind is heated the back and gets into the combustion-supporting or powder process of burner hearth through hot secondary air box;
After boiler is thrown coal dust, oil-break; The beginning load up; Input gas temperature in the flue 13 rises to more than 200 ℃ gradually, and the pressure fan aperture strengthens, the cooling aggravation; The working medium circulation is quickened in the utility model; At this moment, condensate header 9 interior condensing capacities increase and lean on the weight pressure head constantly to get in the heat absorption piping 1, and obvious layering appears in vapour, water; Control valve 16 makes water level keep stable in order to regulate condensing water flow;
During the boiler rated load operation; Input gas temperature in the flue 13 tends towards stability about 350～440 ℃ of intervals; According to the water level in the outlet air temperature adjustment the utility model in the gentle air channel 12 of the outlet cigarette in the flue 13 (by moisturizing or draining adjustment); Evaporation capacity and the adjustment of condensing capacity ratio is suitable; Just adjust the working medium circulating ratio; Saturated vapor allows to have the steam pressure in certain degree of superheat and corresponding adjustment the utility model; Pressure confirms that its saturation temperature is also confirmed;
Import cigarette temperature in flue 13 is constant, and the interior water level of the utility model is constant, and evaporation capacity and water amount ratio are confirmed, beginning stable operation in the utility model;
During the boiler load down, the import cigarette temperature in the flue 13 changes little, and the import exhaust gas volumn reduces, and heat reduces, and this moment, the evaporation capacity of the utility model reduced, and circulation rate reduces; And this moment, air channel 12 interior inlet air amounts also reduced, so the working medium variations in temperature is little in the utility model;
System protection: see steam pressure earlier, if steam pressure is higher than the saturated vapour pressure of corresponding flue-gas temperature, then to empty steam discharge, till dropping to saturated vapour pressure; See temperature again, allowing under certain degree of superheat condition that if be higher than the corresponding temperature of saturated vapour pressure, then evaporation capacity is excessive, answers moisturizing, promptly floods; Check air exit temp and exhanst gas outlet temperature simultaneously, if air themperature is low, outlet cigarette temperature is high, explain that suction, thermal discharge are few, and evaporation capacity is few, so discharge water reduction water level, raising circulating ratio through draining valve 4;
Detecting steam pressure and temperature can accomplish through pressure transmitter and the thermocouple be located on the heat release inlet header 8; And they are inserted the original DCS of boiler control system; Each valve is internally piloted valve and also inserts the original DCS control of boiler system, after manual debugging is accomplished, by import cigarette temperature variation tendency, SEA LEVEL VARIATION and pressure, temperature changing trend; Can work out automatic control and defence program, realize control operation automatically at last.
When system's Natural Circulation goes wrong; Open water intaking valve 5 and emergency valve 18, close control valve 16, the pressure head that utilizes economizer inlet header 15 to feed water deducts the structural drag of this device still greater than the pressure in the boiler water wall lower collecting box 17; Therefore from the about 270 ℃ unsaturated water through the Steam Turbine Regenerative System heating of economizer inlet header 15 supplies; Behind this device, by becoming the saturated vapor with certain degree of superheat mutually, become about 290 ℃ unsaturated water mutually and directly get into boiler water wall lower collecting box 17, the unsaturated water in drum, common downcomer gets into water-cooling wall heat absorption acting; System changes forced circulation into, has urgent defencive function;
The technological merit of the utility model is:
(1), behind newly-increased heat absorption piping 1 and the heat release piping 2; Not only significantly reduce heat loss due to exhaust gas; And by controlling the adjusting that the heat absorption piping 1 interior water yield can realize boiler cigarette temperature, wind-warm syndrome; Increase the regulating power of boiler air and gas system temperature; So boiler still can adopt the utility model device to keep exhaust gas temperature in the winter time the time; Realize that thus boiler is not restricted by environment temperature, reduce heat loss due to exhaust gas, significantly improve boiler thermal output! Realize maximized energy-conservation, reduction of discharging;
(2), at present because of the boiler denitration, rotary regenerative air heater 11 is compelled to increase heating surfaces, and heating surface under original spatial constraints because the intensive burn into that very easily causes is stained with ash, blockage problem; Existing because the flue gas after the denitration is after the utility model heat absorption; Cigarette temperature drop to 280 ℃～180 ℃ has alleviated the heat exchange pressure of rotary regenerative air heater 11, so former rotary regenerative air preheater heating surface not only need not increase but also can have loose bowels and reduce the heat transfer piece height; Change big ripple enamel heat transfer element; Increase actual internal area, thoroughly solve problems such as sulfuric acid cyanogen ammonia corrosion that denitration produces, obstruction, guarantee boiler safety, reliable, stable operation; Simultaneously because of the reduction of air preheater structural drag, send, the air-introduced machine energy consumption descends.
(3), former boiler powder process needs can not advance rotary regenerative air heater with a high-head wind at present; Directly a wind with the heating of this device directly is used for pulverized coal preparation system; Thereby significantly reduce the pressure reduction in the air preheater, solved the problem of leaking out of rotary regenerative air heater simultaneously.
In sum; The utility model can not only significantly reduce heat loss due to exhaust gas, increases the regulating power of boiler air and gas system temperature, improve boiler thermal output, and alleviates former rotary regenerative air heater heat exchange pressure, thoroughly solves problems such as sulfuric acid cyanogen ammonia corrosion that denitration produces, obstruction; And reduction boiler energy consumption; Solved the problem of leaking out of rotary regenerative air heater simultaneously, realized maximized energy-conservation, reduction of discharging, had epoch making significance! With the blank of filling up domestic and international boiler air and gas system adjustment technical elements!
Claims (6)
1. the constant entropy formula air heat exchanger of a boiler; It is characterized in that comprising the heat release piping be located in the outlet air crosswind road, boiler rotary regenerative air preheater top, be located in the inlet flue duct of boiler rotary regenerative air heater top and be positioned at the heat absorption piping below the denitrification apparatus; Heat absorption piping and heat release piping all the elbow pipeline through separately link to each other; The both sides of heat absorption piping and heat release piping all are installed with array fin plate; One end of heat absorption piping links to each other with the heat absorption inlet header, and this heat absorption inlet header links to each other with the boiler economizer inlet header through pipeline and water intaking valve, and this heat absorption inlet header also is provided with drainpipe and draining valve; The two ends of heat release piping link to each other with the condensate header with the heat release inlet header through pipeline respectively; The heat release inlet header links to each other with the other end of heat absorption piping; On the heat release inlet header, be provided with gland steam exhauster; On gland steam exhauster, be provided with exhaust steam valve, the condensate header is connected through pipeline with the heat absorption inlet header, and on this pipeline, is provided with control valve; Heat release inlet header, heat release piping and condensate header are higher than heat absorption inlet header and heat absorption piping.
2. the constant entropy formula air heat exchanger of boiler as claimed in claim 1 is characterized in that the equidistantly vertical fin plate of the array fin plate of said heat absorption piping and heat release piping both sides for symmetry.
3. according to claim 1 or claim 2 the constant entropy formula air heat exchanger of boiler; It is characterized in that between the other end and the heat release inlet header of heat absorption piping, also being provided with the heat absorption outlet header, the pipeline that passes through of the outlet header that absorbs heat links to each other with the heat release inlet header with the heat absorption piping at two ends respectively.
4. the constant entropy formula air heat exchanger of boiler as claimed in claim 3 is characterized in that the pipeline of the said connection heat absorption outlet header and the piping that absorbs heat is array pipe row, and every group of pipe row's both sides all are installed with equidistantly vertical fin plate of array symmetry.
5. the constant entropy formula air heat exchanger of boiler as claimed in claim 4 is characterized in that said condensate header also links to each other with the boiler water wall lower collecting box through pipeline, and on this pipeline, is provided with emergency valve.
6. the constant entropy formula air heat exchanger of boiler as claimed in claim 5 is characterized in that between heat absorption outlet header and heat absorption inlet header, also being provided with double colored indicator, and the two ends of double colored indicator link to each other with the heat absorption inlet header with the heat absorption outlet header respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220051235XU CN202532522U (en) | 2012-02-17 | 2012-02-17 | Isentropic air heat exchanger of boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220051235XU CN202532522U (en) | 2012-02-17 | 2012-02-17 | Isentropic air heat exchanger of boiler |
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| Publication Number | Publication Date |
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| CN202532522U true CN202532522U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220051235XU Expired - Lifetime CN202532522U (en) | 2012-02-17 | 2012-02-17 | Isentropic air heat exchanger of boiler |
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| CN (1) | CN202532522U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537997A (en) * | 2012-02-17 | 2012-07-04 | 燕守志 | Isentropic air heat exchanger of boiler |
-
2012
- 2012-02-17 CN CN201220051235XU patent/CN202532522U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537997A (en) * | 2012-02-17 | 2012-07-04 | 燕守志 | Isentropic air heat exchanger of boiler |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121114 Effective date of abandoning: 20141001 |
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| RGAV | Abandon patent right to avoid regrant |