CN217953168U - Air cooler for cooling exhaust steam of steam turbine - Google Patents
Air cooler for cooling exhaust steam of steam turbine Download PDFInfo
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- CN217953168U CN217953168U CN202220327076.5U CN202220327076U CN217953168U CN 217953168 U CN217953168 U CN 217953168U CN 202220327076 U CN202220327076 U CN 202220327076U CN 217953168 U CN217953168 U CN 217953168U
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- desalted water
- air
- tube bundle
- spraying
- steam turbine
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Abstract
The application provides an air cooler for cooling exhaust steam of a steam turbine, which comprises a cuboid support frame, a plurality of draught fans, two fin tube bundles, a desalted water drainage main pipe, a spraying device and a first valve; the plurality of air guide fans are horizontally fixed on the upper side surface of the rectangular support frame, the air guide fans and the two fin tube bundles are enclosed into a triangular prism, and the two fin tube bundles are positioned above the plurality of air guide fans; the spraying device comprises two groups of spraying components, the two groups of spraying components are arranged inside the triangular prism, each group of spraying components corresponds to one fin tube bundle, and a nozzle of each spraying component faces to the corresponding fin tube bundle; the plurality of air guide fans are used for guiding air on one side of the finned tube bundle to the other side of the finned tube bundle; the desalted water drainage main pipe is connected with a spraying device; the first valve is arranged on the desalted water drainage main pipe and used for controlling the working state of the spraying device. Therefore, the cooling effect of the air cooler is improved, and the efficiency of liquefying the exhaust steam of the steam turbine is improved.
Description
Technical Field
The application relates to the technical field of steam turbine exhaust steam cooling equipment, in particular to an air cooler for cooling steam turbine exhaust steam.
Background
An air cooler is an air cooler for short, and is a device which takes ambient air as a cooling medium and cools or condenses high-temperature fluid in a pipe.
The main structure of the air cooler comprises a wind guide machine, wherein the wind guide machine is used for guiding air to the other side from one side of the pipe to be cooled, so that the air is in contact with the pipe to be cooled, and high-temperature fluid in the pipe to be cooled is cooled.
However, with the recent rise in air temperature, particularly in high-temperature weather in summer, the ambient air temperature is also high, which results in a reduction in the cooling or condensing effect of the air cooler, and thus the requirement for cooling high-temperature fluid cannot be met.
SUMMERY OF THE UTILITY MODEL
The application provides an air cooler for cooling steam turbine exhaust steam for when solving the high temperature weather of air cooler in prior art in summer, the cooling or the condensation effect of air cooler reduce, thereby lead to the problem that the air cooler can not satisfy operation requirement.
In a first aspect, the application provides an air cooler for cooling exhaust steam of a steam turbine, which comprises a cuboid support frame, a plurality of draught fans, two fin tube bundles, a desalted water drainage main pipe, a spraying device and a first valve;
the plurality of air guide fans are horizontally fixed on the upper side surface of the rectangular support frame, and form a triangular prism with the two fin tube bundles, and the two fin tube bundles are positioned above the plurality of air guide fans;
the spraying device comprises two groups of spraying components, the two groups of spraying components are arranged inside the triangular prism, each group of spraying components corresponds to one fin tube bundle, and a nozzle of each spraying component faces to the corresponding fin tube bundle;
the plurality of air guide fans are used for guiding air on one side of the finned tube bundle to the other side of the finned tube bundle, and the flowing air is used for cooling dead steam in the finned tube bundle;
the desalted water drainage main pipe is connected with the spraying device and used for providing desalted water for spraying for the spraying device;
the spraying device is used for spraying the desalted water conveyed by the desalted water drainage main pipe so that the desalted water is in contact with the fin tube bundle and the air around the fin tube bundle, and the temperature of the fin tube bundle and the air is reduced through the desalted water;
the first valve is arranged on the desalted water drainage main pipe and used for controlling the working state of the spraying device.
Optionally, a booster pump is arranged on the desalted water drainage manifold and used for increasing the pressure of the desalted water.
Optionally, a second valve is provided on a side of the booster pump adjacent to the desalinated water inlet, the second valve being configured to isolate the booster pump from liquid entering the desalinated water inlet.
Optionally, a third valve is provided on a side of the booster pump adjacent to the desalinated water outlet, the third valve being configured to isolate the booster pump from liquid in reverse flow from the desalinated water outlet.
Optionally, a pressure gauge is provided at a predetermined distance from the booster pump, and the pressure gauge is used for measuring the pressure of the desalted water drainage main pipe.
Optionally, a drainage guide shower is arranged on the desalted water drainage main pipe and used for draining liquid in the desalted water drainage main pipe.
Optionally, the main desalted water drainage pipe is connected with the two groups of spraying assemblies through two groups of desalted water drainage branch pipes, each group of desalted water drainage branch pipes is provided with a fourth valve, and the fourth valves are used for controlling the working states of the corresponding desalted water drainage branch pipes.
Optionally, the spray device is an atomising spray head.
Optionally, the atomizer is perpendicular to the finned tube bundle.
As can be seen from the above, the air cooler for cooling the exhaust steam of the steam turbine provided in the embodiment of the present application is provided with the spraying device, and the spraying device is used for spraying the desalted water to the finned tube bundle or directly to the air, so that when the temperature of the air is high, or when one or more of the preset multiple air guides fails, and the cooling effect of the air cooler becomes weak, the method of spraying the desalted water to the air and the finned tube bundle through the spraying device can enhance the cooling effect; the problem that when the environmental temperature is too high or the air guide machine breaks down, the air cooler cannot achieve the expected cooling effect in the prior art, and therefore the waste steam liquefaction efficiency of the steam turbine is low is solved; the effect of improving the cooling effect of the air cooling gas is achieved, and therefore the effect of improving the waste steam liquefaction efficiency of the steam turbine is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic illustration of an air cooler for cooling steam turbine exhaust steam according to an embodiment of the present application;
FIG. 2 is a side view of an air cooler for cooling steam turbine exhaust steam according to another embodiment of the present application;
FIG. 3 is a front view of an air cooler for cooling steam turbine exhaust steam according to yet another embodiment of the present application;
FIG. 4 is a top plan view of an air cooler for cooling steam turbine exhaust steam in accordance with another embodiment of the present application;
FIG. 5 is a top view of an air cooler for cooling steam turbine exhaust steam according to another embodiment of the present application.
In the figure: the system comprises a cuboid support frame 100, a draught fan 200, a finned tube bundle 300, a first finned tube bundle 301, a second finned tube bundle 302, a desalted water drainage main pipe 400, a first valve 401, a booster pump 402, a second valve 403, a third valve 404, a liquid discharge and guide shower 406, a fifth valve 407, a shower device 500, a first group of shower assemblies 501, a second group of shower assemblies 502, a desalted water drainage branch pipe 503, a fourth valve 504, a steam turbine exhaust main pipe 600, a condensate return pipe 700 and a condensing box 800.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. In addition, it should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a schematic view of an air cooler for cooling exhaust steam of a steam turbine according to an embodiment of the present application. As shown in fig. 1 in combination with fig. 1 to 5, the air cooler for cooling exhaust steam of a steam turbine includes a rectangular parallelepiped supporting frame 100, a plurality of air guiding fans 200, two fin tube bundles 300, a desalted water guiding main pipe 400, a spraying device 500 and a first valve 401.
The plurality of air guiding fans 200 are horizontally fixed on the upper side surface of the cuboid support frame 100, and form a triangular prism with the two finned tube bundles 300, and the two finned tube bundles 300 are located above the plurality of air guiding fans 200.
Illustratively, as shown in FIG. 2, a first set of spray assemblies 501 corresponds to the first finned tube bundle 301 and a second set of spray assemblies 502 corresponds to the second finned tube bundle 302.
The plurality of air deflectors 200 are used for guiding air on one side of the finned tube bundle 300 to the other side of the finned tube bundle 300, so that the flowing air is used for cooling dead steam in the finned tube bundle 300.
Wherein, the desalted water main conduit 400 is connected with the spray device 500 for providing the spray device 500 with desalted water for spraying.
The spraying device 500 is used for spraying the desalted water delivered from the desalted water drainage main pipe 400 so that the desalted water is in contact with the finned tube bundle 300 and the air around the finned tube bundle 300, and the temperature of the finned tube bundle 300 and the air is reduced by the desalted water.
The first valve 401 is disposed on the desalted water drainage main 400 and is used for controlling the working state of the spraying device 500.
The liquid used for spraying is desalted water instead of tap water, and the desalted water is water without impurities and is not easy to block a nozzle of the spraying device.
The operating state of the spraying device 500 includes a spraying state and a non-spraying state.
In addition, the steam turbine is provided with a steam turbine exhaust steam main pipe 600, and the steam turbine exhaust steam main pipe 600 is connected with the finned tube bundle 300, because the steam turbine exhaust steam main pipe is used for conveying exhaust steam generated by the steam turbine to the finned tube bundle 300.
Before the air cooler starts to work, the exhaust steam needs to be conveyed to the finned tube bundle 300 through the steam turbine exhaust steam main pipe 600; after the exhaust steam to be cooled flows into the finned tube bundle 300, the plurality of air guiding fans 200 start to work, air on one side of the finned tube bundle 300 is guided to the other side of the finned tube bundle 300, and the temperature of the air is far lower than that of the exhaust steam flowing in the finned tube bundle 300, so that when the air passes through gaps on the finned tube bundle 300, the heat exchange can be carried out on the finned tube bundle 300.
Further, when the air temperature is high, or one or more of a plurality of preset air guiding fans are failed, desalted water is input into the desalted water drainage main pipe 400, the first valve 401 is opened, desalted water flows into the desalted water drainage branch pipe 503 through the desalted water drainage main pipe 400, the desalted water drainage branch pipe 503 is connected with the spraying device 500, desalted water is conveyed to the spraying device 500, the spraying device 500 performs spraying operation, the spraying device 500 directly sprays desalted water onto the finned tube bundle 300, and the desalted water is directly contacted with the finned tube bundle 300, so that the finned tube bundle 300 can be cooled through a heat transfer method, and the purpose of cooling exhaust steam in the finned tube bundle 300 is achieved.
Further, when the temperature of the exhaust steam in the finned tube bundle 300 is lowered, the exhaust steam is converted from gas to liquid and enters the condensation tank 800 through the condensate return pipe 700.
Therefore, the spraying device is arranged in the air cooler for cooling the exhaust steam of the steam turbine, so that when the air temperature is high or one or more preset air guide fans have faults to weaken the cooling effect of the air cooler, the desalting water can be sprayed to the air and the fin tube bundle through the spraying device, and the cooling effect is enhanced; the problem of among the prior art can not reach the anticipated cooling effect when the air cooler to can lead to steam turbine exhaust liquefaction inefficiency is solved.
In addition, the even running of steam turbine ground needs to use the liquefaction of steam turbine exhaust steam as the prerequisite, consequently, the air cooler for cooling steam turbine exhaust steam that this application was implemented and is provided not only can improve the stability of steam turbine operation when the high-efficient liquefaction of guarantee steam turbine exhaust steam, can also save the quantity of the steam of steam turbine.
Wherein, the pipe diameter of the desalted water branch drain pipe 503 can be confirmed according to actual conditions, and this embodiment of the application does not limit this, for example, can set up according to the pipe diameter of the desalted water main drain pipe 400, and when the pipe diameter of the desalted water main drain pipe 400 is thick, the pipe diameter of the desalted water branch drain pipe 503 is also thick, exemplarily, when the pipe diameter of the desalted water main drain pipe 400 is 400 millimeters, the pipe diameter of the desalted water branch drain pipe 503 is 50 millimeters.
Optionally, the number of the wind deflectors included in the plurality of wind deflectors 200 may be determined according to an actual situation, which is not limited in this embodiment of the application. For example, the air temperature can be determined according to the air temperature in high-temperature weather, and further, when the air temperature is higher, a larger number of air guiding machines can be set, and when the air temperature is lower, a smaller number of air guiding machines can be set.
For example, when the air temperature is around 40 degrees, 4 air guiding fans can be arranged; when the air temperature is about 35 degrees, 3 air guiding fans can be arranged.
Optionally, the upper side of the plurality of air guiding fans 200 is flush with the upper side of the rectangular parallelepiped supporting frame 100. When the top of a plurality of air guide fans 200 is the last side parallel and level with cuboid support frame 100, not only pleasing to the eye, make things convenient for the setting of each inside device of triangular prism moreover, for example, above-mentioned spray set 500.
Wherein, the distance between the spraying device 500 and the finned tube bundle 300 can be set according to actual conditions, and the embodiment of the application does not limit the distance. For example, 800 mm may be set, and of course, 700 mm may be set according to practical situations.
Wherein, the quantity of spray assembly and the quantity of the shower nozzle that every group spray assembly corresponds also can set up according to actual conditions, for example, every air cooler can set up 8 groups of spray assembly, each 4 groups on every side, every group spray assembly sets up 10 shower nozzles.
Optionally, a booster pump 402 is arranged on the desalted water drainage main pipe 400, and the booster pump 402 is used for increasing the pressure of the desalted water, so that the spraying rate of the desalted water can be increased, and the efficiency of reducing the temperature of the waste steam is improved.
The booster pump 402 may select a booster pump corresponding to the boosting capacity as needed. For example, the current pressure of the desalted water drainage manifold 400 is 0.4Mpa, and the pressurized pressure is 0.5Mpa, and a booster pump having a pressurization capacity of at least 0.1Mpa may be selected according to the requirement.
Optionally, a second valve 403 is provided on the side of the booster pump 402 near the desalinated water inlet, the second valve 403 being used to isolate the booster pump 402 from the liquid entering the desalinated water inlet.
Wherein the second valve 403 is also used for reducing the pressure in the pipeline by adjusting the second valve 403 when the pressure of the desalted water main drain 400 or the desalted water branch drain 503 is too high, so as to prevent the pipe explosion.
In addition, it should be noted here that the first valve 401 and the second valve 403 may be the same valve.
Optionally, a third valve 404 is provided on a side of the booster pump 402 near the desalinated water outlet, the third valve 404 being used to isolate the booster pump 402 from the liquid in reverse flow from the desalinated water outlet.
When the second valve 403 and the third valve 404 are used, the second valve 403 and the third valve 404 may be used in cooperation, for example, when the whole device or the spraying device 500 needs to be overhauled, the second valve 403 and the third valve 404 may be closed at the same time, so that the booster pump 402 may be isolated, and the desalted water in the pipeline does not need to be discharged, thereby improving the convenience of overhaul.
Optionally, a pressure gauge 405 is provided at a predetermined distance from the booster pump 402, and the pressure gauge 405 is used to measure the pressure of the desalinated water drainage manifold 400.
Therefore, the pressure of the desalted water drainage main pipe 400 can be timely known through the pressure gauge 405, so that corresponding measures can be taken when the pressure is too high or too low.
Optionally, a drainage guide shower 406 is disposed on the desalted water drainage manifold 400, and the drainage guide shower 406 is used for draining the desalted water drainage manifold 400.
For example, when the booster pump 402 is serviced or the sprinkler 500 needs to be stopped, the liquid in the desalted water drain main 400 needs to be drained, that is, the drain 406 needs to be opened to perform the draining operation.
Optionally, the main desalted water drainage pipe 400 is connected to two groups of spraying assemblies through two groups of branch desalted water drainage pipes 503, each group of branch desalted water drainage pipes 503 is provided with a fourth valve 504, and the fourth valve 504 is used for controlling the working state of the corresponding branch desalted water drainage pipe 503.
Thus, one or more spray assemblies may be selected to perform a spray operation via the fourth valve 504. This allows the number of spray assemblies performing the spraying operation to be selected based on the temperature of the air and other influencing conditions.
Optionally, the spray device 500 is an atomizer.
Atomizing nozzle can be with the direct atomizing of demineralized water, also spray out the back for the water smoke, and the water smoke can vaporize into steam when contacting on the finned tube bundle 300 of high temperature, and this process can absorb a large amount of heats for air temperature reduces, and then improves the heat exchange efficiency of air conditioning.
Compared with the flowing liquid, the water mist has higher vaporization rate, so the heat absorption is quicker, and the heat exchange efficiency is higher.
Optionally, the atomizer is perpendicular to the finned tube bundle 300.
When the atomizing nozzle is perpendicular to the finned tube bundle 300, the atomizing nozzle sprays the mist onto the finned tube bundle 300 in the shortest distance, and the temperature of the mist sprayed onto the finned tube bundle 300 is the lowest, so that the heat can be taken away as much as possible, and the heat exchange efficiency is improved.
In addition, it should be noted that the above description is only one air cooler, and it is of course possible to add an air cooler according to the amount of the exhaust steam exhausted by the steam turbine.
Illustratively, as shown in fig. 5, one steam turbine corresponds to two air coolers to ensure the condensing efficiency of the dead steam.
Further, when a steam turbine corresponds to a plurality of air coolers, a fifth valve 407 may be disposed at a position of the air desalted water drainage manifold 400 of each air cooler near the air cooler to control the operating state of the corresponding air cooler.
Finally, it should be noted that all the contents not described in the technical solutions of the present application can be implemented by using the prior art. In addition, the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. An air cooler for cooling exhaust steam of a steam turbine is characterized by comprising a cuboid support frame, a plurality of draught fans, two fin tube bundles, a desalted water drainage main pipe, a spraying device and a first valve;
the plurality of air guide fans are horizontally fixed on the upper side surface of the cuboid support frame, the air guide fans and the two fin tube bundles are enclosed to form a triangular prism, and the two fin tube bundles are positioned above the plurality of air guide fans;
the spraying device comprises two groups of spraying assemblies, the two groups of spraying assemblies are arranged inside the triangular prism, each group of spraying assemblies corresponds to one fin tube bundle, and a nozzle of each spraying assembly faces to the corresponding fin tube bundle;
the plurality of air guide fans are used for guiding air on one side of the finned tube bundle to the other side of the finned tube bundle, and the flowing air is used for cooling dead steam in the finned tube bundle;
the desalted water drainage main pipe is connected with the spraying device and used for providing desalted water for spraying for the spraying device;
the spraying device is used for spraying the desalted water conveyed by the desalted water drainage main pipe so that the desalted water is in contact with the finned tube bundle and the air around the finned tube bundle, and the temperature of the finned tube bundle and the air is reduced through the desalted water;
the first valve is arranged on the desalted water drainage main pipe and used for controlling the working state of the spraying device.
2. The air cooler for cooling steam turbine exhaust steam as claimed in claim 1, wherein a booster pump is provided to the desalinated water drainage manifold for increasing the pressure of desalinated water.
3. The air cooler for cooling steam turbine exhaust steam as set forth in claim 2, wherein a second valve is provided on a side of said booster pump adjacent to said desalinated water inlet for isolating said booster pump from liquid entering from said desalinated water inlet.
4. The air cooler for cooling steam turbine exhaust steam according to claim 3, wherein a third valve is provided on a side of the booster pump adjacent to the desalted water outlet for isolating the booster pump from liquid backflow from the desalted water outlet.
5. The air cooler for cooling steam turbine exhaust steam as recited in claim 2, wherein a pressure gauge is provided at a predetermined distance from said booster pump, said pressure gauge being adapted to measure a pressure of said desalinated water drainage manifold.
6. The air cooler for cooling steam turbine exhaust steam according to claim 3, wherein a drain is provided on the desalted water drain header for draining liquid from the desalted water drain header.
7. The air cooler for cooling steam turbine exhaust steam according to claim 2, wherein the desalted water drainage main is connected with the two sets of spraying assemblies through two sets of desalted water drainage branch pipes, each set of desalted water drainage branch pipes is provided with a fourth valve, and the fourth valve is used for controlling the working state of the corresponding desalted water drainage branch pipe.
8. The air cooler for cooling steam turbine exhaust steam as recited in claim 2, wherein said spray means is an atomizing spray head.
9. The air cooler for cooling steam turbine exhaust steam according to claim 8, wherein said atomizer is perpendicular to said finned tube bundle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220327076.5U CN217953168U (en) | 2022-02-18 | 2022-02-18 | Air cooler for cooling exhaust steam of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220327076.5U CN217953168U (en) | 2022-02-18 | 2022-02-18 | Air cooler for cooling exhaust steam of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217953168U true CN217953168U (en) | 2022-12-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220327076.5U Active CN217953168U (en) | 2022-02-18 | 2022-02-18 | Air cooler for cooling exhaust steam of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217953168U (en) |
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2022
- 2022-02-18 CN CN202220327076.5U patent/CN217953168U/en active Active
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