CN215294877U - Boiler feed water heating device - Google Patents
Boiler feed water heating device Download PDFInfo
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- CN215294877U CN215294877U CN202120243605.9U CN202120243605U CN215294877U CN 215294877 U CN215294877 U CN 215294877U CN 202120243605 U CN202120243605 U CN 202120243605U CN 215294877 U CN215294877 U CN 215294877U
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- water
- heat exchanger
- composite phase
- water outlet
- change heat
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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
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model relates to a heating device of boiler feed water belongs to boiler feed water heating technical field. The composite phase change heat exchanger is arranged in a flue at the tail of a boiler, the steam turbine is connected with an inlet of a condenser, and the inlet of the composite phase change heat exchanger is connected with an outlet of the condenser through a water inlet pipe; the outlet of the composite phase-change heat exchanger is connected with the deaerator through the water outlet pipe, steam in the steam turbine is condensed to condensate water in the condenser, then flows into the composite phase-change heat exchanger through the water inlet pipe to heat the condensate water, and the heated condensate water flows into the deaerator through the water outlet pipe. The steam extraction of the steam turbine is not required to be consumed, so that the steam extraction of the steam turbine is saved; and the heat of the flue gas discharged from the tail part of the boiler exchanges heat with the condensed water, so that the flue gas temperature is greatly reduced, and the occurrence of acid corrosion of the boiler caused by the over-low wall surface temperature of the composite phase-change heat exchanger is avoided.
Description
Technical Field
The utility model relates to a heating device of boiler feed water belongs to boiler feed water heating technical field.
Background
At present, the boiler is fed by the low-pressure feed-water circulation of the steam-driven blower set, and the low-pressure feed-water circulation of the steam-driven blower set: 3-5t/h of steam is pumped by a pneumatic blower and is conveyed to a condenser, condensed water at the temperature of 45 ℃ is heated to 130 ℃ by a low-pressure heater and then is introduced into a deaerator, and then the deaerator is fed into a boiler water feeding tank. The method needs to increase the consumption of the extraction steam of the steam turbine and reduces the overall benefit of the unit.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a heating device of boiler feed water is provided to above-mentioned prior art, under the condition that does not consume the turbine extraction of steam, also can heat boiler feed water, reduce the consumption of steam turbine extraction of steam, improve unit overall efficiency.
The utility model provides a technical scheme that above-mentioned problem adopted does: a heating device for boiler water supply comprises a steam turbine and a composite phase change heat exchanger, wherein the composite phase change heat exchanger is arranged in a flue at the tail of a boiler, the steam turbine is connected with an inlet of a condenser, and the inlet of the composite phase change heat exchanger is connected with an outlet of the condenser through a water inlet pipe; the outlet of the composite phase-change heat exchanger is connected with the deaerator through the water outlet pipe, steam in the steam turbine is condensed to condensate water in the condenser, then flows into the composite phase-change heat exchanger through the water inlet pipe to heat the condensate water, and the heated condensate water flows into the deaerator through the water outlet pipe.
The water inlet pipe is provided with a water inlet valve group, a water inlet temperature sensor is arranged in the water inlet pipe and is in signal connection with the water inlet valve group, and the water inlet temperature sensor controls the opening and closing degree of the water inlet valve group.
The water outlet pipe is provided with a water outlet valve group, a water outlet temperature sensor is arranged in the water outlet pipe, the water outlet temperature sensor is in signal connection with the water outlet valve group, and the water outlet temperature sensor controls the opening degree of the water outlet valve group.
Compared with the prior art, the utility model has the advantages of: the utility model provides a heating device of boiler feedwater, the condenser flows to the compound phase transition heat exchanger heating in the boiler afterbody flue behind the water of steam condensation to 40-50 ℃ to through the degree of opening and shutting of intaking valves and play water valve group of temperature sensor control of intaking temperature sensor and play water temperature sensor, make the comdenstion water heat to flow to the oxygen-eliminating device behind 130 ℃, then the boiler feed water tank. The steam extraction of the steam turbine is not required to be consumed, so that the steam extraction of the steam turbine is saved; and the heat of the flue gas discharged from the tail part of the boiler exchanges heat with the condensed water, so that the flue gas temperature is greatly reduced, and the occurrence of acid corrosion of the boiler caused by the over-low wall surface temperature of the composite phase-change heat exchanger is avoided.
Drawings
FIG. 1 is a schematic view of a boiler feed water heating apparatus according to an embodiment of the present invention;
in the figure, a steam turbine 1, a condenser 2, a water inlet valve group 3, a water inlet pipe 4, a composite phase change water heater 5, a water outlet valve group 6, a flue 7, a water outlet pipe 8 and a deaerator 9 are arranged.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, the heating device for boiler water supply in this embodiment includes a composite phase change heat exchanger 5, the composite phase change heat exchanger 5 is disposed in a flue 7 at the tail of the boiler, an inlet of the composite phase change heat exchanger 5 is connected to an outlet of a water inlet pipe 4, an inlet of the water inlet pipe 4 is connected to an outlet of a condenser 2, and an inlet of the condenser 2 is connected to a steam turbine 1 through a steam pipeline. Steam in the steam turbine 1 flows into the condenser 2 through a steam pipeline, the condenser 2 condenses the steam into water, and the condensed water flows into the composite phase change heat exchanger 5 through the water inlet pipe 4 to be heated to above 130 ℃. The outlet of the composite phase change heat exchanger 5 is connected with the inlet of the water outlet pipe 8, the outlet of the water outlet pipe 8 is connected with the deaerator 9, and the heated condensate water flows into the deaerator 9 through the water outlet pipe 8 and then enters the boiler water supply tank to heat the boiler water.
Be equipped with into valves 3 on above-mentioned inlet tube 4, 2 exits of condenser are located to into valves 3, and are equipped with into water temperature sensor in the inlet tube 4, the temperature sensor of intaking, the valves 3 of intaking respectively with controller signal connection. When the temperature sensor of intaking detects the condensate water temperature in the inlet tube 4 and is low excessively, 3 apertures of the valve group of controllerly intaking diminishes for the condensate water that flows into in the compound phase transition heat exchanger 5 reduces.
The water outlet pipe 8 is provided with a water outlet valve group 6, the outlet of the water outlet pipe 8 is provided with a water outlet temperature sensor, and the water outlet temperature sensor and the water outlet valve group 6 are respectively in signal connection with a controller. When the water outlet temperature sensor detects that the temperature of the heated water in the water outlet pipe is too low, the opening of the water outlet valve group is controlled to be reduced, so that the flow of the hot water flowing into the water outlet pipe is reduced, and the heating time of the condensed water in the composite phase-change heat exchanger is prolonged.
The condenser condenses the steam to 40-50 ℃ water and then flows to the composite phase change heat exchanger in the boiler tail flue for heating, and the opening and closing degrees of the water inlet valve group and the water outlet valve group are controlled through the water inlet temperature sensor and the water outlet temperature sensor, so that the condensed water flows to the deaerator after being heated to more than 130 ℃, and then flows to the boiler water supply tank. The steam extraction of the steam turbine is not required to be consumed, and the overall benefit of the unit is improved; and the heat of the flue gas discharged from the tail part of the boiler exchanges heat with the condensed water, so that the temperature of the flue gas is greatly reduced, and the temperature of the wall surface of the composite phase-change heat exchanger exceeds more than 120 ℃, so that the acid corrosion of the boiler caused by the low temperature of the wall surface of the composite phase-change heat exchanger is avoided.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (3)
1. A heating device of boiler feed water is characterized in that: the system comprises a steam turbine (1) and a composite phase change heat exchanger (5), wherein the composite phase change heat exchanger (5) is arranged in a flue (7) at the tail part of a boiler, the steam turbine (1) is connected with an inlet of a condenser (2), and an inlet of the composite phase change heat exchanger (5) is connected with an outlet of the condenser (2) through a water inlet pipe (4); the outlet of the composite phase-change heat exchanger (5) is connected with the deaerator (9) through the water outlet pipe (8), steam in the steam turbine (1) flows into the condenser (2) to be condensed into condensate water, the condensate water is heated in the composite phase-change heat exchanger (5) after flowing into the water inlet pipe (4), and the heated condensate water flows into the deaerator (9) through the water outlet pipe (8).
2. A boiler feed water heating apparatus according to claim 1, characterized in that: be equipped with into valves (3) on inlet tube (4), be equipped with into water temperature sensor in inlet tube (4), into water temperature sensor and the valves (3) signal connection of intaking, the degree of opening and shutting of the valves (3) of intaking is controlled to the temperature sensor of intaking.
3. A boiler feed water heating apparatus according to claim 1, characterized in that: the water outlet pipe (8) is provided with a water outlet valve group (6), a water outlet temperature sensor is arranged in the water outlet pipe (8), the water outlet temperature sensor is in signal connection with the water outlet valve group (6), and the water outlet temperature sensor controls the opening degree of the water outlet valve group (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120243605.9U CN215294877U (en) | 2021-01-28 | 2021-01-28 | Boiler feed water heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120243605.9U CN215294877U (en) | 2021-01-28 | 2021-01-28 | Boiler feed water heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215294877U true CN215294877U (en) | 2021-12-24 |
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ID=79530686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120243605.9U Active CN215294877U (en) | 2021-01-28 | 2021-01-28 | Boiler feed water heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215294877U (en) |
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2021
- 2021-01-28 CN CN202120243605.9U patent/CN215294877U/en active Active
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