CN209295090U - A kind of multifunctional low-temperature economizer system - Google Patents
A kind of multifunctional low-temperature economizer system Download PDFInfo
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- CN209295090U CN209295090U CN201821656193.6U CN201821656193U CN209295090U CN 209295090 U CN209295090 U CN 209295090U CN 201821656193 U CN201821656193 U CN 201821656193U CN 209295090 U CN209295090 U CN 209295090U
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Abstract
The utility model discloses a kind of multifunctional low-temperature economizer systems, it belongs to economizer field, including working medium inlet pipe, working medium inlet pipe connects several low-level (stack-gas) economizer modules, several low-level (stack-gas) economizer module other ends are connected with working medium outlet pipe, working medium outlet pipe is equipped with condensed water in boiler plate heat exchanger, the outlet of condensed water in boiler plate heat exchanger is connected with circulation loop pipeline, circulation loop pipeline and working medium inlet pipe are converged and circulation loop pipeline is at least provided with one, non-return valve and electric control valve are equipped on every circulation loop pipeline, working medium outlet pipe is also connected with domestic water plate heat exchanger, it is connect after domestic water plate heat exchanger and condensed water in boiler plate heat exchanger are in parallel with circulation loop pipeline.The utility model makes low-level (stack-gas) economizer module in the case where meeting itself optimum working temperature, meets the needs of condensed water in boiler and domestic water.
Description
Technical field
The utility model relates to economizer fields, and in particular to a kind of multifunctional low-temperature economizer system.
Background technique
Flue gas loss is that a most important heat loss, typically about 5%--12% account for boiler heat loss in boiler operatiopn
60%--70%, the principal element for influencing heat loss due to exhaust gas is exhaust gas temperature, under normal circumstances, exhaust gas temperature it is every increase by 10
DEG C, heat loss due to exhaust gas increases 0.6%--1%, corresponding more consumption coal 1.2%--2.4%.If to use calorific value 2000KJ/KG coal
It is for 410t/h high-pressure boiler, then annual to consume nearly ten thousand tons of power power coals, many boiler exhaust gas temperature of Power Plant in China more
Degree is above design value, about 20-50 DEG C higher than design value.So reducing exhaust gas temperature for saving fuel and reducing pollution tool
There is an important practical significance, the boiler technology reform in practice for the purpose of reducing exhaust gas temperature is more.
In order to reduce exhaust gas temperature, flue gas loss is reduced, improves the performance driving economy of power plant, it is contemplated that install additional on flue
Low-level (stack-gas) economizer.Low-level (stack-gas) economizer the specific scheme is that condensed water absorbs smoke exhaust heat in low-level (stack-gas) economizer, reduce smoke evacuation temperature
Degree, itself be heated, increase temperature after return again to steam turbine low-pressure heater system, instead of the effect of part low-pressure heater.
In the case where generated energy is constant, the energy consumption of unit can be saved.Simultaneously as the smoke temperature into desulfurizing tower declines, can also save
The about consumption of sulfur removal technology water.Although its heat recovery meets self cycle applications, the still heat with the presence of 30%
Waste situation.
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 multifunctional low-temperature economizer system, to overcome drawbacks described above.
Utility model content
For the problems of in the prior art, a kind of multifunctional low-temperature economizer system provided by the utility model,
Flue gas heat is made full use of in conjunction with low-level (stack-gas) economizer, further increases utilization rate of waste heat.
To achieve the goals above, the technical solution adopted in the utility model is as follows: a kind of multifunctional low-temperature economizer system
System, including working medium inlet pipe, the working medium inlet pipe connect several low-level (stack-gas) economizer modules, and several low-level (stack-gas) economizer modules are another
End is connected with working medium outlet pipe, and the working medium outlet pipe is equipped with condensed water in boiler plate heat exchanger, and the condensed water in boiler is board-like to be changed
Hot device outlet is connected with circulation loop pipeline, and the circulation loop pipeline and the working medium inlet pipe are converged simultaneously；
The working medium outlet pipe is also connected with domestic water plate heat exchanger, and the domestic water plate heat exchanger and boiler are solidifying
It is connect after bearing water plate heat exchanger parallel connection with circulation loop pipeline.
Water tank of voltage regulation and dosing pipe are also connected in the working medium inlet pipe as a preferred technical solution,.
Temperature of Working is 90 DEG C in the working medium inlet pipe as a preferred technical solution, by the low-level (stack-gas) economizer mould
After block, the Temperature of Working in working medium outlet pipe is 110 DEG C.
The input of the condensed water in boiler plate heat exchanger and domestic water plate heat exchanger as a preferred technical solution,
End is equipped with electric control valve.
Pipeline I is also parallel on the condensed water in boiler plate heat exchanger as a preferred technical solution, the life is used
It is also parallel with pipeline II on water plate heat exchanger, is equipped with shut-off valve on the pipeline I and pipeline II.
The circulation loop pipeline is at least provided with one as a preferred technical solution, on every circulation loop pipeline
Equipped with non-return valve and electric control valve.
As a preferred technical solution, condensed water in boiler plate heat exchanger both ends be connected with condensed water in boiler inlet pipe and
Condensed water in boiler outlet pipe, the condensed water in boiler inlet pipe are equipped with non-return valve and electric control valve.
Domestic water plate heat exchanger both ends are connected with domestic water inlet pipe and life as a preferred technical solution,
With water outlet pipe, the domestic water inlet pipe is equipped with non-return valve and electric control valve, and the domestic water outlet pipe is equipped with storage
Tank.
The flue gas is 134 DEG C by the temperature before the low-level (stack-gas) economizer module as a preferred technical solution, described
Flue gas is 104 DEG C by the temperature after the low-level (stack-gas) economizer module.
The heat exchanger tube of the low-level (stack-gas) economizer module uses H-type finned tube as a preferred technical solution,.
The utility model has the beneficial effect that
(1) the utility model sufficiently recycles the waste heat after low-level (stack-gas) economizer module that it is made to be applied to condensed water in boiler and life
Water is applied flexibly, the utilization rate of waste heat is improved.
(2) condensed water in boiler plate heat exchanger and the pipeline of domestic water plate heat exchanger parallel connection are according to the actual negative of boiler
It carries situation rationally to open, makes low-level (stack-gas) economizer module in the case where meeting itself optimum working temperature, meet condensed water in boiler
With the needs of domestic water.
(3) air-flow passed through on the utility model H-type fin flows as the crow flies, and airflow direction does not change, and fin is not easy to accumulate
Ash ensure that heat exchange efficiency.
(4) the utility model circulation loop pipeline achievees the purpose that the using and the reserved at least provided with one, increases operation
Safety.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of multifunctional low-temperature economizer system；
Fig. 2 is a kind of multifunctional low-temperature economizer system low-level (stack-gas) economizer flue gas circulation schematic diagram.
In figure: 1- working medium inlet pipe, 2- circulation loop pipeline, 3- water tank of voltage regulation, 4- dosing pipe, 5- low-level (stack-gas) economizer mould
Block, 6- working medium outlet pipe, 7- condensed water in boiler plate heat exchanger, 8- pipeline I, 9- condensed water in boiler inlet pipe, 10- condensed water in boiler go out
Pipe, 11- domestic water plate heat exchanger, 12- pipeline II, 13- domestic water inlet pipe, 14- domestic water outlet pipe, 15- holding vessel.
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 and Figure 2, a kind of multifunctional low-temperature economizer system, including working medium inlet pipe 1, if working medium inlet pipe 1 connects
Dry low-level (stack-gas) economizer module 5, several 5 other ends of low-level (stack-gas) economizer module are connected with working medium outlet pipe 6, and working medium outlet pipe 6 is equipped with pot
Furnace condensed water plate heat exchanger 7, the outlet of condensed water in boiler plate heat exchanger 7 are connected with circulation loop pipeline 2, circulation loop pipeline
2 converge simultaneously with working medium inlet pipe 1, circulation loop pipeline 2 at least provided with one, be equipped on every circulation loop pipeline 2 non-return valve and
Electric control valve can achieve the purpose of the using and the reserved in this way, increase the safety of operation；Working medium outlet pipe 6 is also connected with life
With water plate heat exchanger 11, after 7 parallel connection of domestic water plate heat exchanger 11 and condensed water in boiler plate heat exchanger with circulation loop
Pipeline 2 connects.
The utility model sufficiently recycles the waste heat after low-level (stack-gas) economizer module 5 that it is made to be applied to condensed water in boiler and life
With water, the utilization rate of waste heat, the pipeline of 11 parallel connection of condensed water in boiler plate heat exchanger 7 and domestic water plate heat exchanger are improved
It is rationally opened according to the actual loading situation of boiler, makes low-level (stack-gas) economizer module 5 the case where meeting itself optimum working temperature
Under, meet the needs of condensed water in boiler and domestic water.
Water tank of voltage regulation 3 and dosing pipe 4 are also connected in the utility model working medium inlet pipe 1, by setting in suitable position
Water bypass is counted, emergency situations is coped with, ensure that the safety of system, in addition design dosing pipe, is convenient for water process.
The utility model flue gas is 134 DEG C by the temperature before low-level (stack-gas) economizer module 5, and flue gas passes through low-level (stack-gas) economizer mould
Temperature after block 5 is 104 DEG C.And Temperature of Working is 90 DEG C in working medium inlet pipe 1, and after low-level (stack-gas) economizer module 5, working medium outlet pipe
Temperature of Working in 6 is 110 DEG C.
The input terminal of the utility model condensed water in boiler plate heat exchanger 7 and domestic water plate heat exchanger 11 is equipped with electricity
Dynamic regulating valve, to guarantee that it can adjust flow according to actual loading.
Pipeline I 8, domestic water plate heat exchanger 11 are also parallel on the utility model condensed water in boiler plate heat exchanger 7
On be also parallel with pipeline II 12, be equipped with shut-off valve on pipeline I 8 and pipeline II 12, the parallel-connection structure is also for according to reality
Load carry out effectively heat exchange adjustment.
Specifically, 7 both ends of condensed water in boiler plate heat exchanger are connected with condensed water in boiler inlet pipe 9 and condensed water in boiler outlet pipe
10, condensed water in boiler inlet pipe 9 is equipped with non-return valve and electric control valve；11 both ends of domestic water plate heat exchanger are connected with life
With water inlet pipe 13 and domestic water outlet pipe 14, domestic water inlet pipe 13 is equipped with non-return valve and electric control valve, and domestic water goes out
Pipe 14 is equipped with holding vessel 15.
The heat exchanger tube of the utility model low-level (stack-gas) economizer module 5 uses H-type finned tube, due to the gas passed through on H-type fin
Stream flows as the crow flies, and airflow direction does not change, and fin is not easy dust stratification, ensure that heat exchange efficiency.
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 (10)
1. a kind of multifunctional low-temperature economizer system, it is characterised in that: including working medium inlet pipe, the working medium inlet pipe connection is several low
Warm economizer module, several low-level (stack-gas) economizer module other ends are connected with working medium outlet pipe, and the working medium outlet pipe is equipped with pot
Furnace condensed water plate heat exchanger, the condensed water in boiler plate heat exchanger outlet is connected with circulation loop pipeline, described to be recycled back to
Road pipeline and the working medium inlet pipe are converged simultaneously；
The working medium outlet pipe is also connected with domestic water plate heat exchanger, the domestic water plate heat exchanger and condensed water in boiler
It is connect after plate heat exchanger is in parallel with circulation loop pipeline.
2. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: in the working medium inlet pipe also
It is connected with water tank of voltage regulation and dosing pipe.
3. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: work in the working medium inlet pipe
Matter temperature is 90 DEG C, and after the low-level (stack-gas) economizer module, the Temperature of Working in working medium outlet pipe is 110 DEG C.
4. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: the condensed water in boiler plate
The input terminal of formula heat exchanger and domestic water plate heat exchanger is equipped with electric control valve.
5. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: the condensed water in boiler plate
It is also parallel with pipeline I on formula heat exchanger, pipeline II, the pipeline I and pipe are also parallel on the domestic water plate heat exchanger
Shut-off valve is equipped on road II.
6. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: the circulation loop pipeline
At least provided with one, non-return valve and electric control valve are equipped on every circulation loop pipeline.
7. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: the condensed water in boiler plate
Formula heat exchanger both ends are connected with condensed water in boiler inlet pipe and condensed water in boiler outlet pipe, and the condensed water in boiler inlet pipe is equipped with check
Valve and electric control valve.
8. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: the domestic water is board-like
Heat exchanger both ends are connected with domestic water inlet pipe and domestic water outlet pipe, and the domestic water inlet pipe is equipped with non-return valve and electronic
Regulating valve, the domestic water outlet pipe are equipped with holding vessel.
9. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: flue gas passes through the low temperature
Temperature before economizer module is 134 DEG C, and flue gas is 104 DEG C by the temperature after the low-level (stack-gas) economizer module.
10. a kind of multifunctional low-temperature economizer system according to claim 1, it is characterised in that: the low-level (stack-gas) economizer
The heat exchanger tube of module uses H-type finned tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821656193.6U CN209295090U (en) | 2018-10-12 | 2018-10-12 | A kind of multifunctional low-temperature economizer system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821656193.6U CN209295090U (en) | 2018-10-12 | 2018-10-12 | A kind of multifunctional low-temperature economizer system |
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| CN209295090U true CN209295090U (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264073A (en) * | 2021-12-29 | 2022-04-01 | 北京华源泰盟节能设备有限公司 | Preheating system with multiple parallel boilers and control method thereof |
-
2018
- 2018-10-12 CN CN201821656193.6U patent/CN209295090U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264073A (en) * | 2021-12-29 | 2022-04-01 | 北京华源泰盟节能设备有限公司 | Preheating system with multiple parallel boilers and control method thereof |
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