CN211625213U - Water temperature adjusting device of thermal power factory - Google Patents
Water temperature adjusting device of thermal power factory Download PDFInfo
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- CN211625213U CN211625213U CN201922388549.3U CN201922388549U CN211625213U CN 211625213 U CN211625213 U CN 211625213U CN 201922388549 U CN201922388549 U CN 201922388549U CN 211625213 U CN211625213 U CN 211625213U
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Abstract
The utility model belongs to the technical field of thermal power, more specifically say, it relates to a thermal power factory temperature adjusting device, including attemperator, circulation pipeline and power generation system, circulation pipeline is used for linking to each other attemperator and power generation system and forms the route, power generation system is used for turning into the electric energy with heat energy, and form circulation pipeline with attemperator end to end, attemperator includes the water feeding tank, return water tank and former water tank, the input of return water tank passes through circulation pipeline and connects the power generation system end, the output is connected to the input of water feeding tank through circulation pipeline, the water feeding tank is used for depositing the return water of power generation system output, the output of former water tank is connected to the input of water feeding tank, former water tank is used for depositing the raw water, the output of water feeding tank is connected. The utility model discloses set up homothermal former water tank, adjust raw water and return water mixing proportion in real time, make the feedwater that gets into the boiler keep the temperature stable to stabilize the heating efficiency of boiler.
Description
Technical Field
The utility model belongs to the technical field of thermal power, more specifically say, it relates to a thermal power factory temperature adjusting device.
Background
The basic production process of a thermal power plant, which is a plant for producing electric energy by using combustible materials as fuel, is that the fuel heats water to generate steam during combustion, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, then the steam turbine drives a generator to rotate, and the mechanical energy is converted into electric energy.
In recent years, the utilization of circulating water has been more and more emphasized by power plants, especially coal-fired thermal power plants, and the most important circulating water comes from the condensed water of the condenser. The steam turbine generates electricity by converting the heat energy of the steam generated by the boiler into mechanical energy, the product from the steam turbine is not completely 100% of the steam due to pressure loss, the water content in the product is greatly increased, and the product is difficult to process in the subsequent direct pressure increasing and temperature increasing process. Moreover, with the change of the peak period of the power consumption, the conversion power of the steam turbine is changed, so that the temperature, the water content and the pressure of the output of the steam turbine are changed, the steam is changed into condensed water after being cooled by the condenser, and the temperature of the condensed water is changed along with the change of the peak period of the power consumption due to different essential conditions of the steam. Generally, condensed water is directly circulated as feed water to a boiler for conversion again, but the change of the feed water temperature can cause the heating efficiency of the boiler to be unstable, and the temperature of steam generated by the boiler can also float to a certain extent, thereby causing the generated power of a steam turbine to float.
Common temperature regulation apparatus is mostly some waste heat utilization equipment, utilizes the residual heat energy of exhaust steam, heats the feedwater, and patent CN201721799797.1 discloses a thermal power factory's temperature adjusting device, including the condenser, the bottom of condenser is provided with first drain port, be provided with first temperature sensor in the first drain port, the bottom fixedly connected with drain pipe of first drain port, be provided with first solenoid valve on the drain pipe, the one end fixedly connected with water tank of first drain port is kept away from to the drain pipe, the top both sides fixedly connected with support frame of water tank. This thermal power factory's temperature adjusting device passes through condenser, first drain port, drain pipe, first solenoid valve, water tank, support frame, motor, (mixing) shaft, electric putter, roof, heating device, first temperature sensor, second drain port and second solenoid valve for temperature automatic regulating device's cooling rate improves still, only needs to rise the roof, opens the motor stirring, can accelerate the cooling. This patent is with the drainage accelerated cooling of condenser, does not have the heat energy make full use of to drainage itself, leads to the energy waste, and the temperature regulation and control is uncontrollable simultaneously, can not stably get into the feedwater temperature of boiler.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a thermal power factory temperature adjusting device sets up homothermal former water tank, adjusts raw water and return water mixing proportion in real time, makes the feedwater that gets into the boiler keep the temperature stable to stabilize the heating efficiency of boiler.
In order to achieve the above purpose, the utility model provides a following technical scheme: a water temperature adjusting device of a thermal power plant comprises a temperature adjusting device, a circulating pipeline and a power generation system, wherein the circulating pipeline is used for connecting the temperature adjusting device and the power generation system to form a passage, the power generation system is used for converting heat energy into electric energy and is connected with the temperature adjusting device end to form the circulating pipeline, the temperature adjusting device comprises a water supply tank, a water return tank and a raw water tank, the water supply tank, the water return tank and the raw water tank are sealed, the input end of the water return tank is connected with the tail end of the power generation system through the circulating pipeline, the output end of the water return tank is connected to the input end of the water supply tank through the circulating pipeline, the water supply tank is used for storing return water produced by the power generation system, the output end of the raw water tank is connected to the input end of the water supply tank, the output end of the water supply tank is connected to the head end of the power generation system through a circulating pipeline, and the water supply tank is used for supplying water to the power generation system.
In the above water temperature adjusting device for a thermal power plant, as a preferred scheme, a first water feed pump is arranged on a circulation pipeline between the water return tank and the water feed tank, a second water feed pump is arranged between the raw water tank and the water feed tank, and a third water feed pump is arranged on the circulation pipeline between the water feed tank and the head end of the power generation system.
In foretell thermal power factory temperature adjusting device, as preferred scheme, the output of former water tank is equipped with the second oxygen-eliminating device, the second oxygen-eliminating device is used for getting rid of the oxygen in the former water that former water tank exported.
In the above water temperature adjusting device for a thermal power plant, as a preferred scheme, a first valve is arranged on a circulation pipeline between the return water tank and the water supply tank, and a second valve is arranged between the raw water tank and the water supply tank.
In the above water temperature adjusting apparatus for a thermal power plant, preferably, a first flow meter is disposed on a circulation pipeline between the return water tank and the feed water tank, a second flow meter is disposed between the raw water tank and the feed water tank, and a third flow meter is disposed on the circulation pipeline between the feed water tank and the head end of the power generation system.
In foretell thermal power factory temperature adjusting device, as preferred scheme, return water tank inside is equipped with first temperature sensor, former inside second temperature sensor that is equipped with of water tank.
In the above water temperature adjusting device for a thermal power plant, preferably, the power generation system includes a boiler, a steam turbine, a generator, a condenser, a condensate pump, and a circulation line, the boiler, the steam turbine, the condenser and the condensate pump are sequentially connected in series through the circulating pipeline, the generator is connected with an output shaft of the steam turbine, the condensate pump is connected to the water return tank, the steam turbine set is used for converting the heat energy of the steam conveyed by the boiler into mechanical energy, and provides the mechanical energy to a generator for converting the mechanical energy transmitted from the turbine into electrical energy, the condenser is disposed at an outlet end of the turbine, the steam condensing pump is arranged at the outlet end of the condenser and used for pressurizing and conveying the liquid water conveyed by the condenser to the water return tank.
In the above-mentioned water temperature adjusting device of thermal power factory, as preferred scheme, congeal the pump with be provided with first oxygen-eliminating device on the circulating line between the return water tank, first oxygen-eliminating device is used for getting rid of the oxygen in liquid aquatic.
To sum up, the utility model has the advantages of it is following:
1. the utility model aims to provide a water temperature adjusting device of a thermal power plant, which is provided with a constant-temperature raw water tank and a return water tank, and the temperature of the feed water is adjusted by mixing the raw water and the return water;
2. the utility model aims to provide a water temperature adjusting device of a thermal power plant, which is characterized in that valves are arranged on a raw water tank and a return water tank, so that the mixing ratio of raw water and return water can be adjusted, and the water supply temperature range can be adjusted;
3. an object of the utility model is to provide a temperature adjusting device of thermal power factory establishes temperature sensor respectively in former water tank and return water tank inside to set up the flowmeter respectively in the exit, through monitoring the two real-time temperature, adjust the valve size of former water tank and return water tank respectively, and calculate through the flowmeter, the two mixed proportion of rational distribution, thereby can adjust the feedwater temperature in real time, make the feedwater that gets into the boiler keep the temperature stable, thereby stabilize the heating efficiency of boiler.
Drawings
Fig. 1 is a schematic overall flow chart of a water temperature adjusting device of a thermal power plant according to an embodiment of the present invention;
fig. 2 is a schematic general flow chart of another embodiment of the water temperature adjusting device of the thermal power plant according to the embodiment of the present invention.
Description of reference numerals: 1. a boiler; 2. a steam turbine; 3. a generator; 4. a condenser; 5. a coagulation pump; 6. a first deaerator; 7. returning to a water tank; 8. a raw water tank; 9. a water supply tank; 10. a second deaerator; 11. a boiler feed pump; 12. a boiler flow meter; 13. a first temperature sensor; 14. a second temperature sensor; 15. a first valve; 16. a first flow meter; 17. a first feed pump; 18. a second valve; 19. a second flow meter; 20. A second feed pump.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention.
The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, fig. 1 is a schematic general flow chart of a water temperature adjusting device of a thermal power plant according to an embodiment of the present invention; the utility model provides a water temperature adjusting device of a thermal power plant, which comprises a temperature adjusting device, a circulating pipeline and a power generation system, wherein the circulating pipeline is used for connecting the temperature adjusting device and the power generation system to form a passage, the power generation system is used for converting heat energy into electric energy and is connected with the temperature adjusting device end to form the circulating pipeline, the temperature adjusting device comprises a water supply tank 9, a water return tank 7 and a raw water tank 8, the water supply tank 9, the water return tank 7 and the raw water tank 8 are all arranged in a sealing way, the input end of the water return tank 7 is connected with the tail end of the power generation system through the circulating pipeline, the output end is connected to the input end of the water supply tank 9 through the circulating pipeline, the water supply tank 9 is used for storing the return water produced by the power generation system, the output end of the raw water tank 8 is connected to the input end, the feed tank 9 is used to supply feed water to the power generation system.
In the above-described water temperature adjusting apparatus for a thermal power plant, preferably, a first water feed pump 17 is provided on the circulation line between the return water tank 7 and the water feed tank 9, a second water feed pump 20 is provided between the raw water tank 8 and the water feed tank 9, and a third water feed pump 11 is provided on the circulation line between the water feed tank 9 and the head end of the power generation system. The raw water tank 8 is set to be closed and constant in temperature, the raw water tank 8 can be made of idle redundant condensed water or prepared distilled water, and the condensed water is stored in the raw water tank 8 for heat preservation without additionally arranging a heater; the condensate water output is directly connected with the water return tank 7 to temporarily store the return water, the return water in the water return tank 7 is conveyed to the water supply tank 9 through the first water supply pump 17, the raw water in the raw water tank 8 is conveyed to the water supply tank 9 through the second water supply pump 20, the feed water in the water supply tank 9 is conveyed to the boiler 1 through the third water supply pump 11, and the adjustment of the temperature of the feed water is completed through the mixing of the raw water and the return water in sequence.
In the above water temperature adjusting device for a thermal power plant, as a preferred scheme, the output end of the raw water tank 8 is provided with a second deaerator 10, and the second deaerator 10 is used for removing oxygen in the raw water output by the raw water tank 8.
As shown in fig. 2, fig. 2 is a schematic general flow chart of another embodiment of a water temperature adjusting device of a thermal power plant according to an embodiment of the present invention; in the present embodiment, it is preferable that a first valve 15 is provided on a circulation line between the return tank 7 and the feed tank 9, and a second valve 18 is provided between the raw water tank 8 and the feed tank 9.
In the above-described water temperature control apparatus for a thermal power plant, preferably, a first flow meter 16 is provided on the circulation line between the return tank 7 and the feed tank 9, a second flow meter 19 is provided between the raw water tank 8 and the feed tank 9, and a third flow meter 12 is provided on the circulation line between the feed tank 9 and the head end of the power generation system.
In the above-described water temperature adjusting apparatus for a thermal power plant, preferably, the return water tank 7 is provided therein with a first temperature sensor 13, and the raw water tank 8 is provided therein with a second temperature sensor 14.
Assuming that the feed water temperature is controlled to be T, the first temperature sensor 13 detects that the temperature of the return water tank 7 is T1The second temperature sensor 14 detects the temperature of the raw water tank 8 as T2The first flowmeter 16 measures the output flow of the return water tank 7 as A1The second flow meter 19 measures the output flow of the raw water tank 8 as A2The third flow meter 12 measures the output flow of the water supply tank 9 as A3Then the following relationship is satisfied:
A1+A2＝A3；
wherein T is at T1And T2In the meantime. When A is3In the case of a fixed value, A can be calculated1And A2The first valve 15 and the second valve 18 are adjusted in turn so that A is1And A2And finishing the water supply temperature adjusting process when the calculated value is reached.
In the above-mentioned water temperature adjusting device for a thermal power plant, as a preferable scheme, the power generation system includes a boiler 1, a steam turbine 2, a generator 3, a condenser 4, a condensate pump 5, and a circulation pipeline (not shown), the boiler 1, the steam turbine 2, the condenser 4, and the condensate pump 5 are sequentially connected in series through the circulation pipeline, the generator 3 is connected to an output shaft of the steam turbine 2, the condensate pump 5 is connected to a water return tank 7, the steam turbine 2 is configured to convert the heat energy of the steam delivered from the boiler 1 into mechanical energy, and supplies the mechanical energy to the generator 3, the generator 3 is used for converting the mechanical energy transferred from the turbine 2 into electric energy, the condenser 4 is arranged at the outlet end of the turbine 2, the condensing pump 5 is arranged at the outlet end of the condenser 4 and is used for pressurizing and conveying the liquid water conveyed by the condenser 4 to the water return tank 7.
In the above water temperature adjusting device for a thermal power plant, as a preferable scheme, a first deaerator 6 is arranged on a circulation pipeline between the condensate pump 5 and the water return tank 7, and the first deaerator 6 is used for removing oxygen in liquid water.
The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The utility model provides a thermal power factory temperature adjusting device which characterized in that: the water temperature adjusting device of the thermal power plant comprises a temperature adjusting device, a circulating pipeline and a power generation system, wherein the circulating pipeline is used for connecting the temperature adjusting device and the power generation system to form a passage, the power generation system is used for converting heat energy into electric energy and is connected with the temperature adjusting device end to form the circulating pipeline, the temperature adjusting device comprises a water supply tank, a water return tank and a raw water tank, the water supply tank, the water return tank and the raw water tank are sealed, the input end of the water return tank is connected with the tail end of the power generation system through the circulating pipeline, the output end of the water return tank is connected to the input end of the water supply tank through the circulating pipeline, the water supply tank is used for storing the return water produced by the power generation system, the output end of the raw water tank is connected to the input end of the water supply tank, the raw water tank is, the feed tank is used for supplying feed water to the power generation system.
2. The water temperature adjusting apparatus of a thermal power plant according to claim 1, wherein: and a first water feed pump is arranged on a circulating pipeline between the water return tank and the water feed tank, a second water feed pump is arranged between the raw water tank and the water feed tank, and a third water feed pump is arranged on the circulating pipeline between the water feed tank and the head end of the power generation system.
3. The water temperature adjusting apparatus of a thermal power plant according to claim 2, wherein: and the output end of the raw water tank is provided with a second deaerator, and the second deaerator is used for removing oxygen in the raw water output by the raw water tank.
4. The water temperature adjusting apparatus of a thermal power plant according to claim 2, wherein: a first valve is arranged on a circulating pipeline between the water return tank and the water supply tank, and a second valve is arranged between the raw water tank and the water supply tank.
5. The water temperature adjusting apparatus of a thermal power plant according to claim 4, wherein: and a first flowmeter is arranged on a circulating pipeline between the water return tank and the water feeding tank, a second flowmeter is arranged between the raw water tank and the water feeding tank, and a third flowmeter is arranged on the circulating pipeline between the water feeding tank and the head end of the power generation system.
6. The water temperature adjusting apparatus of a thermal power plant according to claim 5, wherein: the inside first temperature sensor that is equipped with of return water tank, former water tank is inside to be equipped with second temperature sensor.
7. The water temperature adjusting apparatus of a thermal power plant according to any one of claims 1 to 6, wherein: the power generation system comprises a boiler, a steam turbine, a generator, a condenser, a condensing pump and a circulating pipeline, wherein the boiler, the steam turbine, the condenser and the condensing pump sequentially pass through the circulating pipeline in series, the generator is connected with an output shaft of the steam turbine, the condensing pump is connected to the water return tank, the steam turbine unit is used for converting heat energy of steam conveyed by the boiler into mechanical energy and providing the mechanical energy for the generator, the generator is used for converting the mechanical energy transmitted by the steam turbine into electric energy, the condenser is arranged at an outlet end of the steam turbine and used for condensing the steam conveyed by the steam turbine into liquid water, and the condensing pump is arranged at an outlet end of the condenser and used for pressurizing and conveying the liquid water conveyed by the condenser into the water return tank.
8. The water temperature adjusting apparatus of a thermal power plant according to claim 7, wherein: a first deaerator is arranged on a circulating pipeline between the condensation pump and the water return tank and used for removing oxygen in liquid water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388549.3U CN211625213U (en) | 2019-12-26 | 2019-12-26 | Water temperature adjusting device of thermal power factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922388549.3U CN211625213U (en) | 2019-12-26 | 2019-12-26 | Water temperature adjusting device of thermal power factory |
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| Publication Number | Publication Date |
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| CN211625213U true CN211625213U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922388549.3U Active CN211625213U (en) | 2019-12-26 | 2019-12-26 | Water temperature adjusting device of thermal power factory |
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| CN (1) | CN211625213U (en) |
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- 2019-12-26 CN CN201922388549.3U patent/CN211625213U/en active Active
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