CN209295168U - A kind of low temperature exhaust heat recyclable device with water temperature regulation device - Google Patents
A kind of low temperature exhaust heat recyclable device with water temperature regulation device Download PDFInfo
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- CN209295168U CN209295168U CN201821656644.6U CN201821656644U CN209295168U CN 209295168 U CN209295168 U CN 209295168U CN 201821656644 U CN201821656644 U CN 201821656644U CN 209295168 U CN209295168 U CN 209295168U
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- control valve
- electric control
- header
- pipeline
- cooler
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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 utility model discloses a kind of low temperature exhaust heat recyclable device with water temperature regulation device, it belongs to waste heat recycling field, including flue, high-temperature cooler and subcolling condenser are successively arranged along flue gas conveying direction on flue, high-temperature cooler both ends are equipped with high-temperature cooler import header and high-temperature cooler outlet header, subcolling condenser both ends are equipped with subcolling condenser import header and subcolling condenser outlet header, and cooler header connecting tube is equipped between high-temperature cooler import header and subcolling condenser outlet header；The subcolling condenser import header other end is connected with pipeline I, pipeline I is equipped with electric control valve I, pipeline I is also connected with cooler header connecting tube, electric control valve II is equipped between cooler header connecting tube and pipeline I, it is equipped with electric control valve III at subcolling condenser outlet header, is connected to after being connected with the pipeline parallel connection of electric control valve II and electric control valve III with cooler header connecting tube.
Description
Technical field
The utility model relates to waste heat recycling fields, and in particular to a kind of low temperature exhaust heat recycling dress with water temperature regulation device
It sets.
Background technique
It is more or less in boiler oil at present all to contain sulphur.Sulphur when using the more fuel of sulfur content, in fuel
After combustion, sulfur dioxide is mostly become, small part therein is further oxidized to sulfur trioxide gas under certain condition.
Sulfur trioxide gas and water vapour can be combined into sulfuric acid vapor, and condensation dew-point temperature is up to 120 DEG C or more, and flue gas acid content is cured
Greatly, dew-point temperature is higher, and it is more serious to corrode stifled ash.In order to improve boiler thermal efficiency, Tube Sheet of Heat Exchanger wall temperature is lower than generated
When sulphuric acid dew point, sulfuric acid just condenses on tube wall and generates corrosion, is called low-temperature corrosion.
The number of sulfur content, influences the selection of exhaust gas temperature in fuel.Meanwhile in view of to boiler efficiency, prevent tail
The factors such as portion's heating surface low-temperature corrosion and safe operation comprehensively consider, currently, the boiler design equipped with air preheater is arranged
Smoke temperature degree is generally 130~160 DEG C, and the boiler (such as refuse furnace, biomass boiler, coke-oven coal steam stove) of some specific fuels
Exhaust gas temperature is even higher.Exhaust gas temperature is every to reduce by 15 DEG C or so, and boiler efficiency improves 1%, therefore runs now big
There is huge energy waste in most boilers, and existing boiler heating surface is not able to satisfy and continues wanting for Mist heat recovering
It asks.
Existing residual neat recovering system can be realized waste heat recycling, but can not automatically control pipe wall temperature and smoke evacuation temperature
Degree, causes equipment in variable parameter operation, is chronically at the more serious region of low-temperature corrosion, equipment life is caused to shorten, and occurs
Stopping accident and reduction economic benefit.
In view of the above-mentioned problems of the prior art, the design and use warp of the utility model combination related fields many years
It tests, is aided with too strong professional knowledge, manufactured and designed a kind of low temperature exhaust heat recyclable device with water temperature regulation device, on overcoming
State defect.
Utility model content
For the problems of in the prior art, more than a kind of low temperature with water temperature regulation device provided by the utility model
Heat recovery apparatus can set automatic feedback according to exhaust gas temperature and adjust, adjust rate-of flow in waste-heat recovery device pipe, reach
Exhaust gas temperature purpose is controlled, prevents smoke temperature too low, low-temperature corrosion aggravation.
To achieve the goals above, the technical solution adopted in the utility model is as follows: a kind of with the low of water temperature regulation device
Warm waste-heat recovery device, including flue are successively arranged high-temperature cooler and sub-cooled along flue gas conveying direction on the flue
Device, the high-temperature cooler both ends are equipped with high-temperature cooler import header and high-temperature cooler outlet header, the sub-cooled
Device both ends be equipped with subcolling condenser import header and subcolling condenser outlet header, the high-temperature cooler import header with it is described
Cooler header connecting tube is equipped between subcolling condenser outlet header；
The subcolling condenser import header other end is connected with pipeline I, and the pipeline I is equipped with electric control valve I, institute
It states pipeline I and is also connected with the cooler header connecting tube, motorized adjustment is equipped between the cooler header connecting tube and pipeline I
Valve II is equipped with electric control valve III at the subcolling condenser outlet header, is connected with electric control valve II and electric control valve
It is connected to after III pipeline is in parallel with the cooler header connecting tube；
Pipeline II is communicated between the high-temperature cooler outlet header and pipeline I, the pipeline II is equipped with electric adjustable
Save valve IV.
Safety valve is additionally provided on the pipeline I as a preferred technical solution, is equipped with temperature sensor in the pipeline I.
Non-return valve is additionally provided on the pipeline II as a preferred technical solution,.
As a preferred technical solution, when boiler rated load operation, the electric control valve I and electric control valve III are beaten
It opens, the electric control valve II is closed.
When boiler at low load is run as a preferred technical solution, the electric control valve I and electric control valve III are closed
It closes, the electric control valve II is opened.
The flue side is additionally provided with spare flue as a preferred technical solution, is equipped on flue and spare flue
Valve.
The utility model has the beneficial effect that
(1) the utility model is according to the demands of different operating conditions, under the premise of not changing original cooling system, by going here and there simultaneously
Joining corresponding pipeline and installing corresponding electric control valve realizes rate-of flow in adjusting waste-heat recovery device pipe, reaches
Control exhaust gas temperature purpose, it is therefore prevented that the phenomenon that smoke temperature is too low, and low-temperature corrosion aggravates.
(2) the utility model is general to choose temperature in actual use since the requirement to medium temperature in pipe is harsher
Degree is at 20 DEG C of flue gas water dew point or more, and user's offer water quality temperature is often relatively low, therefore sets in hot water outlet and cooling water inlet
Hot water circuit bypass duct II is set, enters waste-heat recovery device after part hot water and cold water mix to required temperature.
(3) the utility model can make flue-gas temperature be down to 85 DEG C or so, and boiler efficiency is greatly improved.
(4) the utility model is provided with spare flue, can integrally cut out in equipment damage, guarantee entire boiler machine
Group operation.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of low temperature exhaust heat recyclable device with water temperature regulation device.
In figure: 1- flue, 2- high-temperature cooler, 3- subcolling condenser, 4- high-temperature cooler outlet header, 5- High-temperature cooling
Device import header, 6- subcolling condenser outlet header, 7- subcolling condenser import header, 8- safety valve, 9- electric control valve I,
10- pipeline I, 11- electric control valve II, 12- electric control valve III, 13- electric control valve IV, 14- non-return valve, 15- pipeline II,
16- cooler header connecting tube.
Specific embodiment
In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the accompanying drawings.
As shown in Figure 1, a kind of low temperature exhaust heat recyclable device with water temperature regulation device, including flue 1, along cigarette on flue 1
Gas conveying direction is successively arranged high-temperature cooler 2 and subcolling condenser 3, and 2 both ends of high-temperature cooler are equipped with high-temperature cooler import
Header 5 and high-temperature cooler outlet header 4,3 both ends of subcolling condenser are equipped with subcolling condenser import header 7 and subcolling condenser
Outlet header 6 is equipped with cooler header connecting tube 16 between high-temperature cooler import header 5 and subcolling condenser outlet header 6；
7 other end of the utility model subcolling condenser import header is connected with pipeline I 10, and pipeline I10 is equipped with electric adjustable
Valve I 9 is saved, pipeline I10 is also connected with cooler header connecting tube 16, and electricity is equipped between cooler header connecting tube 16 and pipeline I10
Regulating valve II 11 is moved, electric control valve III 12 is equipped at subcolling condenser outlet header 6, is connected with electric control valve II 11 and electricity
It is connected to after the pipeline of dynamic regulating valve III 12 is in parallel with cooler header connecting tube 16；
The utility model when facing boiler rated load operation, open by electric control valve I 9 and electric control valve III 12,
Electric control valve II 11 is closed；When boiler at low load is run, electric control valve I 9 and electric control valve III 12 are closed, motorized adjustment
Valve II 11 is opened.The utility model is according to the demands of different operating conditions, under the premise of not changing original cooling system, by going here and there simultaneously
Joining corresponding pipeline and installing corresponding electric control valve realizes rate-of flow in adjusting waste-heat recovery device pipe.Simultaneously
It is set, can be adjusted with automatic feedback according to exhaust gas temperature, adjust rate-of flow in waste-heat recovery device pipe, reach control smoke evacuation temperature
Purpose is spent, prevents smoke temperature too low, low-temperature corrosion aggravation,
The utility model is harsher due to the requirement to medium temperature in pipe in actual use, and general temperature of choosing exists
20 DEG C of flue gas water dew point or more, and user's offer water quality temperature is often relatively low, therefore in high-temperature cooler outlet header 4 and pipeline
Pipeline II 15 is communicated between I 10, pipeline II 15 is equipped with electric control valve IV 13, is flowed out by high-temperature cooler outlet header 4
Part hot water enter waste-heat recovery device after pipeline II 15 and I 10 cold water mix to required temperature of pipeline.
It is additionally provided with safety valve 8 on the utility model pipeline I10, prevents hypertonia, guarantees to use safe, the pipeline I
Temperature sensor is equipped in 10, hot water re-circulation can detect inlet water temperature by temperature sensor, adjust quantity of circulating water, control
Pipe wall temperature, is in heat exchanger in controlled area charactert always.
It is additionally provided with non-return valve 14 on the utility model pipeline II 15, flue side is additionally provided with spare flue, flue 1 and spare
It is equipped with valve on flue, can integrally be cut out in equipment damage, guarantees entire boiler controller system operation.
It should be appreciated that the purposes of these embodiments is merely to illustrate the utility model and is not intended to limitation the utility model
Protection scope.In addition, it should also be understood that, those skilled in the art can be right after having read the technology contents of the utility model
The utility model does various change, modification and/or variation, all these equivalent forms equally fall within right appended by the application and want
Seek book within the limits of the protection.
Claims (6)
1. a kind of low temperature exhaust heat recyclable device with water temperature regulation device, it is characterised in that: including flue, along cigarette on the flue
Gas conveying direction is successively arranged high-temperature cooler and subcolling condenser, and the high-temperature cooler both ends are equipped with high-temperature cooler import
Header and high-temperature cooler outlet header, the subcolling condenser both ends are equipped with subcolling condenser import header and subcolling condenser
Outlet header is equipped with cooler header and connects between the high-temperature cooler import header and the subcolling condenser outlet header
Pipe；
The subcolling condenser import header other end is connected with pipeline I, and the pipeline I is equipped with electric control valve I, the pipe
Road I is also connected with the cooler header connecting tube, and electric control valve is equipped between the cooler header connecting tube and pipeline I
II, it is equipped with electric control valve III at the subcolling condenser outlet header, is connected with electric control valve II and electric control valve III
Pipeline it is in parallel after be connected to the cooler header connecting tube；
Pipeline II is communicated between the high-temperature cooler outlet header and pipeline I, the pipeline II is equipped with electric control valve
Ⅳ。
2. a kind of low temperature exhaust heat recyclable device with water temperature regulation device according to claim 1, it is characterised in that: described
It is additionally provided with safety valve on pipeline I, is equipped with temperature sensor in the pipeline I.
3. a kind of low temperature exhaust heat recyclable device with water temperature regulation device according to claim 1, it is characterised in that: described
Non-return valve is additionally provided on pipeline II.
4. a kind of low temperature exhaust heat recyclable device with water temperature regulation device according to claim 1, it is characterised in that: boiler
When rated load operation, the electric control valve I and electric control valve III are opened, and the electric control valve II is closed.
5. a kind of low temperature exhaust heat recyclable device with water temperature regulation device according to claim 1, it is characterised in that: boiler
When underrun, the electric control valve I and electric control valve III are closed, and the electric control valve II is opened.
6. a kind of low temperature exhaust heat recyclable device with water temperature regulation device according to claim 1, it is characterised in that: described
Flue side is additionally provided with spare flue, is equipped with valve on flue and spare flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821656644.6U CN209295168U (en) | 2018-10-12 | 2018-10-12 | A kind of low temperature exhaust heat recyclable device with water temperature regulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821656644.6U CN209295168U (en) | 2018-10-12 | 2018-10-12 | A kind of low temperature exhaust heat recyclable device with water temperature regulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209295168U true CN209295168U (en) | 2019-08-23 |
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ID=67652580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821656644.6U Active CN209295168U (en) | 2018-10-12 | 2018-10-12 | A kind of low temperature exhaust heat recyclable device with water temperature regulation device |
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| Country | Link |
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| CN (1) | CN209295168U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797432A (en) * | 2020-12-31 | 2021-05-14 | 大唐郓城发电有限公司 | Boiler flue gas waste heat degree of depth utilizes system |
-
2018
- 2018-10-12 CN CN201821656644.6U patent/CN209295168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112797432A (en) * | 2020-12-31 | 2021-05-14 | 大唐郓城发电有限公司 | Boiler flue gas waste heat degree of depth utilizes system |
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