Water circulation device of steam turbine

Abstract

The utility model relates to the technical field of water circulation of steam turbines, and discloses a water circulation device of a steam turbine, which comprises a water tank, a condenser, a water storage box and a filter tank, the water tank is positioned on the left side of the condenser, and the water storage box is positioned on the right side of the condenser and connected with the condenser through a pipeline. The filter box is located on the right side of the water storage box and connected with an inner cavity of the water storage box through a pipeline; a water pumping mechanism used in cooperation with the condenser is arranged in an inner cavity of the water tank. A filtering mechanism matched with the filtering box for use is arranged at the top of the inner cavity of the filtering box; a circulating mechanism matched with the filter box is arranged at the bottom of the inner cavity of the filter box. The problems that in the water circulation heat dissipation process of the steam turbine, an assembly which cannot filter circulating water exists, so that a heat dissipation water source contains many impurities in the circulation process, the use effect of the heat dissipation water source is reduced, and the circulation effect of the heat dissipation water source cannot be improved are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam turbine water circulation, and particularly relates to a water circulation device for a steam turbine. Background Technique

[0002] The water circulation device of a steam turbine is an important part to ensure the normal operation of the steam turbine. Its main function is to cool and dissipate heat. During the operation of the steam turbine, a large amount of heat will be generated. If the heat is not dissipated in time, it will cause the steam turbine to overheat, affect its normal operation, and even cause failures. Therefore, the function of the water circulation device is to take away the heat through the circulating flow of water and ensure the normal working temperature of the steam turbine. When the steam turbine starts to operate, the water pump starts to work, pumps water out of the water tank, and transports it to the steam turbine through the water inlet pipe for cooling. In the steam turbine, heat exchange occurs between the water and the heat generated by the steam turbine, causing the water temperature to rise. Then, the hot water enters the cooling device through the water outlet pipe, and the water temperature decreases after cooling. Finally, the cooled water returns to the water tank through the circulating water pipe and waits for the next cycle. In short, the water circulation device of the steam turbine is one of the keys to ensuring its normal operation. Through the circulating flow of water and the heat dissipation of the cooling device, the temperature of the steam turbine can be effectively reduced, and its operation efficiency and stability can be improved.

[0003] The water circulation device of a steam turbine plays a crucial role during the operation of the steam turbine. When a large amount of heat is generated during the operation of the steam turbine, the water circulation device can timely discharge this heat to prevent the steam turbine from overheating. This is mainly achieved by the circulating water pump pumping water from the water tank and transporting it to the cooler of the steam turbine for cooling. The cooler dissipates the heat of the hot water to ensure the normal operation of the steam turbine. The filtered circulating water can also be used as the cooling water for some equipment, providing cooling water for the oil cooler, water pump, water cooler, hydrogen cooler, closed water cooler, etc. When the steam turbine starts, stops, or operates at low load, due to the small amount of condensate water, the recirculation valve is opened at this time to return the condensate water to the condenser to ensure that the air ejector has sufficient cooling water volume to maintain normal operation. The water circulation device plays a protective role for the condensate pump and the low-pressure heater to avoid damage to them at high temperatures. The water circulation principle of the circulating water can also achieve heat recovery. In the circulating water system, the heat of the circulating water is transferred to other media, such as steam, through a heat exchanger. In this way, the heat of the circulating water can be used to generate steam for other technological processes, improving the energy utilization efficiency. By regularly maintaining the circulating water system, such as replacing the filter screen, detecting the water quality and pH value, cleaning and maintaining the equipment, and detecting the discharge pipeline, the stable operation of the water circulation system can be ensured, further guaranteeing the normal operation of the steam turbine and extending its service life. In summary, the water circulation device of the steam turbine plays an important role in aspects such as cooling, protection, heat recovery, and improving energy utilization efficiency, and is an indispensable part of the operation of the steam turbine. The problems existing in the above technology are: during the process of water circulation cooling of the steam turbine, there are components that cannot filter the circulating water, resulting in more impurities being carried in the circulating cooling water source during the circulation process, thereby reducing the use effect of the cooling water source, and thus unable to improve the circulation effect of the cooling water source. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a water circulation device for a steam turbine that can overcome or at least partially solve the above problems.

[0005] The present invention is realized as follows. A water circulation device for a steam turbine includes a water tank, a condenser, a water storage box, and a filtration box. The water tank is located on the left side of the condenser. The water storage box is located on the right side of the condenser and is connected to the condenser through a pipeline. The filtration box is located on the right side of the water storage box and is connected to the inner cavity of the water storage box through a pipeline. A water pumping mechanism cooperating with the condenser is arranged in the inner cavity of the water tank. A filtration mechanism cooperating with the filtration box is arranged at the top of the inner cavity of the filtration box. A circulation mechanism cooperating with the filtration box is arranged at the bottom of the inner cavity of the filtration box.

[0006] To improve the water supply effect of the condenser, preferably, the pumping mechanism includes a water pump, a connecting pipe, and a first water suction pipe. The water pump is located inside the water tank. The connecting pipe is located on the right side of the water pump and is fixedly connected to the inner wall of the water pump. The first water suction pipe is located on the left side of the water pump and is fixedly connected to the left side of the water pump. The bottom of the first water suction pipe contacts the inside of the water tank. By setting up the pumping mechanism, the water pump can, through the mutual cooperation of the connecting pipe and the first water suction pipe, achieve the effect of quickly supplying water to the inside of the condenser, so as to facilitate the rapid cooling of the heat dissipation water source by the condenser and introduce the cooled water source into the water storage box through the drainage pipe for use.

[0007] To improve the filtering effect of the heat dissipation water source, preferably, the filtering mechanism includes a filter screen, a filter block, and filter cotton. The filter screen is located at the top of the inner cavity of the filter box. The filter cotton is located at the bottom of the inner cavity of the filter box. The filter block is located at the opposite ends of the filter screen and the filter cotton. The tops of the filter screen, the filter block, and the filter cotton are all horizontally aligned with the bottom of the water inlet pipe. By setting up the filtering mechanism, through the mutual cooperation of the filter screen, the filter block, and the filter cotton, the effect of multiple filtering of the impurities contained in the circulating water source can be achieved, so as to avoid the situation where the impurities contained in the circulating water source cannot be processed.

[0008] To improve the convenience of water supply to the water tank, preferably, the circulating mechanism includes a pumping end, a second water suction pipe, and a circulating pipe. The water suction pipe is located at the bottom of the inner cavity of the filter box and is fixedly connected to the inner wall of the filter box. The second water suction pipe is located on the right side of the pumping end and is fixedly connected to the inner cavity of the water suction pipe. The bottom of the right side of the second water suction pipe is attached to the bottom of the inner cavity of the filter box. The circulating pipe is located on the left side of the water suction pipe and is fixedly connected to the left side of the water suction pipe. The top of the left side of the circulating pipe is fixedly connected to the inner cavity of the water tank. By setting up the circulating mechanism, after the filtering mechanism filters and processes the heat dissipation water source, the water will accumulate in the inner cavity of the filter box. Then, through the mutual cooperation of the pumping end and the second water suction pipe, the effect of quickly pumping the accumulated water can be achieved, and the filtered water can also be introduced into the inner cavity of the water tank through the circulating pipe for use.

[0009] To improve the installation convenience of the filtering mechanism, preferably, clamping blocks are fixedly connected to both the left and right sides of the inner cavity of the filter box. The left and right sides of the filter cotton, the filter block, and the filter cotton are all inserted and fitted into the inner cavity of the clamping blocks. By setting up the clamping blocks, multiple clamping blocks can, through the mutual cooperation with the filter cotton, the filter block, and the filter cotton, achieve the effect of stably supporting the filter cotton, the filter block, and the filter cotton. Therefore, the filter cotton, the filter block, and the filter cotton can also be quickly disassembled and assembled, facilitating the user to remove the filter cotton, the filter block, and the filter cotton for cleaning.

[0010] To improve the stability of the circulation mechanism, preferably, a support block is sleeved on the surface of the circulation pipe. The number of the support blocks is multiple and they are evenly distributed on the surface of the circulation pipe. The bottom of the support block can be fixedly installed on the wall through bolts. By setting the support block, the support block plays a role in assisting the support of the circulation pipe, avoiding the situation that the circulation pipe is in a suspended state and cannot be stably connected to the pumping end and the water tank.

[0011] To improve the installation convenience of the water pump, preferably, a fixing plate is fixedly connected to the bottom of the water pump. The bottom of the fixing plate is fixedly installed on the inner wall of the water tank through bolts. By setting the fixing plate, the fixing plate plays a role in facilitating the user to quickly install the water pump.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By setting a water tank, a condenser, a water storage box, a filter box, a pumping mechanism, a filtering mechanism and a circulation mechanism, when the water pump is started, the water pump will extract the circulating water inside the water tank through the first water extraction pipe, and introduce the circulating water into the inner cavity of the condenser through the connecting pipe for cooling treatment. When the circulating water enters the inner cavity of the condenser, the condenser is started to cool the circulating water. The circulating water after cooling treatment will be introduced into the inner cavity of the water storage box through the condenser for use, and the used circulating water is introduced into the inner cavity of the filter box. When the circulating water passes through the drainage pipe between the water storage box and the filter box, it will directly contact the top of the filter net. When the circulating water contacts the surface of the filter net, the filter net will perform the first filtration treatment on the circulating water, so as to filter out larger foreign matters in the circulating water. When the circulating water passes through the filter net, it will fall on the top of the filter block. After the circulating water contacts the top of the filter block, it will be filtered for the second time. When the circulating water passes through the filter block, it will fall on the top of the filter cotton, and the filter cotton will filter out the fine impurities contained in the circulating water, thus achieving the effect of efficiently treating the foreign matters and impurities in the circulating water. After the treatment is completed, the pumping end is started. The pumping end will extract the circulating water source stored in the filter box through the second water extraction pipe, and introduce the circulating water source into the inner cavity of the water tank through the circulation pipe, so as to achieve the high-efficiency filtration and rapid circulation of the circulating water source, thereby further improving the cooling effect on the steam turbine. Description of the Drawings

[0014] Figure 1 is a three-dimensional structure diagram provided by an embodiment of the present utility model;

[0015] Figure 2 is a sectional view of the water tank provided by an embodiment of the present utility model;

[0016] Figure 3It is a schematic diagram of the internal structure of the filter box provided by an embodiment of the present utility model;

[0017] Figure 4 It is a schematic diagram of the connection between the circulation pipe and the support block provided by an embodiment of the present utility model.

[0018] In the figure: 1. Water tank; 2. Condenser; 3. Water storage box; 4. Filter box; 5. Water pumping mechanism; 6. Filter mechanism; 7. Circulation mechanism; 501. Water pump; 502. Connecting pipe; 503. First water suction pipe; 601. Filter screen; 602. Filter block; 603. Filter cotton; 701. Water suction end; 702. Second water suction pipe; 703. Circulation pipe; 8. Clamping block; 9. Support block; 10. Fixed plate. Specific embodiments

[0019] In order to further understand the invention content, features and effects of the present utility model, the following embodiments are exemplified and described in detail with reference to the accompanying drawings.

[0020] The structure of the present utility model will be described in detail below with reference to the accompanying drawings.

[0021] Such as Figures 1 to 4As shown in the figure, a water circulation device for a steam turbine provided by an embodiment of the present utility model includes a water tank 1, a condenser 2, a water storage box 3, and a filter box 4. The water tank 1 is located on the left side of the condenser 2. The water storage box 3 is located on the right side of the condenser 2 and is connected to the condenser 2 through a pipeline. The filter box 4 is located on the right side of the water storage box 3 and is connected to the inner cavity of the water storage box 3 through a pipeline. A water pumping mechanism 5 for cooperating with the condenser 2 is arranged in the inner cavity of the water tank 1. A filtering mechanism 6 for cooperating with the filter box 4 is arranged at the top of the inner cavity of the filter box 4. A circulating mechanism 7 for cooperating with the filter box 4 is arranged at the bottom of the inner cavity of the filter box 4. The water pumping mechanism 5 includes a water pump 501, a connecting pipe 502, and a first water suction pipe 503. The water pump 501 is located in the inner cavity of the water tank 1. The connecting pipe 502 is located on the right side of the water pump 501 and is fixedly communicated with the inner wall of the water pump 501. The first water suction pipe 503 is located on the left side of the water pump 501 and is fixedly communicated with the left side of the water pump 501. The bottom of the first water suction pipe 503 contacts the inner cavity of the water tank 1. By arranging the water pumping mechanism 5, the water pump 501 can, through the mutual cooperation of the connecting pipe 502 and the first water suction pipe 503, achieve the effect of quickly supplying water to the inner cavity of the condenser 2, so as to facilitate quickly cooling the heat-dissipating water source through the condenser 2 and introducing the cooled water source into the interior of the water storage box 3 through a drainage pipeline for use. The filtering mechanism 6 includes a filter screen 601, a filter block 602, and filter cotton 603. The filter screen 601 is located at the top of the inner cavity of the filter box 4. The filter cotton 603 is located at the bottom of the inner cavity of the filter box 4. The filter block 602 is located at the relative ends of the filter screen 601 and the filter cotton 603. The tops of the filter screen 601, the filter block 602, and the filter cotton 603 are horizontally aligned with the bottom of the water inlet pipeline. By arranging the filtering mechanism 6, through the mutual cooperation of the filter screen 601, the filter block 602, and the filter cotton 603, the effect of multiple filtering of impurities contained in the circulating water source can be achieved, so as to avoid the situation where the impurities contained in the circulating water source cannot be processed. The circulating mechanism 7 includes a water pumping end 701, a second water suction pipe 702, and a circulating pipe 703. The water suction pipe is located at the bottom of the inner cavity of the filter box 4 and is fixedly connected to the inner wall of the filter box 4. The second water suction pipe 702 is located on the right side of the water pumping end 701 and is fixedly communicated with the inner cavity of the water suction pipe. The bottom of the right side of the second water suction pipe 702 is attached to the bottom of the inner cavity of the filter box 4. The circulating pipe 703 is located on the left side of the water suction pipe and is fixedly communicated with the left side of the water suction pipe. The top of the left side of the circulating pipe 703 is fixedly communicated with the inner cavity of the water tank 1. By arranging the circulating mechanism 7, after the water source filtered by the filtering mechanism 6 accumulates in the inner cavity of the filter box 4, the effect of quickly pumping the accumulated water source can be achieved through the mutual cooperation of the water pumping end 701 and the second water suction pipe 702, and the filtered water source can also be introduced into the inner cavity of the water tank 1 through the circulating pipe 703 for use. Clamping blocks 8 are fixedly connected to both the left and right sides of the inner cavity of the filter box 4.The left and right sides of the filter cotton 603, the filter block 602 and the filter cotton 603 are all inserted and fitted with the inner cavity of the clamping block 8. By setting the clamping block 8, multiple clamping blocks 8 can cooperate with the filter cotton 603, the filter block 602 and the filter cotton 603 to achieve the effect of stably supporting the filter cotton 603, the filter block 602 and the filter cotton 603. Therefore, the filter cotton 603, the filter block 602 and the filter cotton 603 can also be quickly disassembled and assembled, so as to facilitate the user to remove the filter cotton 603, the filter block 602 and the filter cotton 603 for cleaning. A support block 9 is sleeved on the surface of the circulation pipe 703. The number of the support blocks 9 is multiple and they are evenly distributed on the surface of the circulation pipe 703. The bottom of the support block 9 can be fixedly installed on the wall through bolts. By setting the support block 9, the support block 9 plays a role in assisting in supporting the circulation pipe 703, avoiding the situation that the circulation pipe 703 is in a suspended state and cannot be stably connected to the water pumping end 701 and the water tank 1. The bottom of the water pump 501 is fixedly connected with a fixing plate 10. The bottom of the fixing plate 10 is fixedly installed on the inner wall of the water tank 1 through bolts. By setting the fixing plate 10, the fixing plate 10 plays a role in facilitating the user to quickly install the water pump 501.,

[0022] The working principle of the present utility model:

[0023] When in use, start the water pump 501. The water pump 501 will extract the circulating water inside the water tank 1 through the first water extraction pipe 503, and introduce the circulating water into the inner cavity of the condenser 2 through the connecting pipe 502 for cooling treatment. When the circulating water enters the inner cavity of the condenser 2, start the condenser 2 to cool the circulating water. The circulating water after cooling treatment will be introduced into the inner cavity of the water storage box 3 through the condenser 2 for use, and the used circulating water will be introduced into the inner cavity of the filter box 4. When the circulating water passes through the drainage pipe between the water storage box 3 and the filter box 4, it will directly contact the top of the filter net 601. When the circulating water contacts the surface of the filter net 601, the filter net 601 will perform the first filtration treatment on the circulating water, so as to filter out larger foreign matters in the circulating water. When the circulating water passes through the filter net 601, it will fall on the top of the filter block 602. After the circulating water contacts the top of the filter block 602, it will be filtered for the second time. When the circulating water passes through the filter block 602, it will fall on the top of the filter cotton 603, and the filter cotton 603 will filter out the fine impurities contained in the circulating water, thus completing the effect of efficiently treating the foreign matters and impurities in the circulating water. After the treatment is completed, start the water pumping end 701. The water pumping end 701 will extract the circulating water source stored in the filter box 4 through the second water extraction pipe 702, and introduce the circulating water source into the inner cavity of the water tank 1 through the circulation pipe 703, so as to achieve the efficient filtration and rapid circulation of the circulating water source, thereby further improving the cooling effect on the steam turbine.

[0024] In this application, the specific model specifications of the water tank 1, condenser 2, water storage box 3, filter box 4, water pump 501 and water pumping end 701 need to be determined according to the actual specifications of the device. The specific selection calculation method, circuit connection method and its control method all adopt the existing technologies in this field, so they will not be elaborated in detail here.

[0025] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0026] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, within the scope of the technical solution of the present utility model.

Claims

1. A water circulation device for a steam turbine, comprising a water tank (1), a condenser (2), a water storage box (3) and a filter box (4), characterized in that: The water tank (1) is located on the left side of the condenser (2), the water storage box (3) is located on the right side of the condenser (2) and is connected to the condenser (2) via a pipe, and the filter box (4) is located on the right side of the water storage box (3) and is connected to the inner cavity of the water storage box (3) via a pipe; The inner cavity of the water tank (1) is provided with a water pumping mechanism (5) used in conjunction with the condenser (2); A filtering mechanism (6) for use with the filter box (4) is provided at the top of the inner cavity of the filter box (4); A circulation mechanism (7) used in conjunction with the filter box (4) is provided at the bottom of the inner cavity of the filter box (4).

2. A water circulation device for a steam turbine as claimed in claim 1, characterized in that: The water pumping mechanism (5) comprises a water pump (501), a connecting pipe (502) and a first water pumping pipe (503); the water pump (501) is located in the inner cavity of the water tank (1); the connecting pipe (502) is located on the right side of the water pump (501) and is fixedly connected to the inner wall of the water pump (501); the first water pumping pipe (503) is located on the left side of the water pump (501) and is fixedly connected to the left side of the water pump (501); and the bottom of the first water pumping pipe (503) is in contact with the inner cavity of the water tank (1).

3. A water circulation device for a steam turbine as claimed in claim 1, characterized in that: The filtering mechanism (6) comprises a filter screen (601), a filter block (602) and filter cotton (603); the filter screen (601) is located at the top of the inner cavity of the filter box (4); the filter cotton (603) is located at the bottom of the inner cavity of the filter box (4); the filter block (602) is located at the opposite ends of the filter screen (601) and the filter cotton (603); and the tops of the filter screen (601), the filter block (602) and the filter cotton (603) are all horizontally aligned with the bottom of the water inlet pipe.

4. A water circulation device for a steam turbine as claimed in claim 1, characterized in that: The circulation mechanism (7) comprises a water pumping end (701), a second water pumping pipe (702) and a circulation pipe (703); the water pumping pipe is located at the bottom of the inner cavity of the filter box (4) and is fixedly connected to the inner wall of the filter box (4); the second water pumping pipe (702) is located on the right side of the water pumping end (701) and is fixedly connected to the inner cavity of the water pumping pipe; the bottom of the right side of the second water pumping pipe (702) is in contact with the bottom of the inner cavity of the filter box (4); the circulation pipe (703) is located on the left side of the water pumping pipe and is fixedly connected to the left side of the water pumping pipe; the top of the left side of the circulation pipe (703) is fixedly connected to the inner cavity of the water tank (1).

5. A water circulation device for a steam turbine as claimed in claim 3, characterized in that: The left and right sides of the inner cavity of the filter box (4) are fixedly connected with a clamping block (8), and the filter cotton (603), the filter block (602) and the left and right sides of the filter cotton (603) are plugged and fitted with the inner cavity of the clamping block (8).

6. A water circulation device for a steam turbine as claimed in claim 4, characterized in that: The surface of the circulation pipe (703) is sleeved with a support block (9); the support blocks (9) are multiple and evenly distributed on the surface of the circulation pipe (703); the bottom of the support block (9) can be fixed to the wall by bolts.

7. A water circulation device for a steam turbine as claimed in claim 2, characterized in that: The bottom of the water pump (501) is fixedly connected to a fixing plate (10), and the bottom of the fixing plate (10) is fixedly mounted to the inner wall of the water tank (1) by means of bolts.

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