Anti-accumulation steam turbine open type water circulation filter

Abstract

The utility model discloses an anti-accumulation steam turbine open type water circulation filter, which relates to the technical field of filters, and comprises a filter shell and a slag discharge pipeline, the bottom end of the filter shell is butted with the slag discharge pipeline, and the outer wall of the filter shell is connected with a water storage tank through a support table. When the anti-accumulation open type water circulation filter for the steam turbine is used, the corresponding filtering areas of the water return pipeline and the water inlet pipeline are continuously changed through the auxiliary mechanism, the situation that the filter screen disc is fixed and is quickly blocked by filtered impurities is prevented, and the filtering effect is improved by rotating the filter screen disc; according to the anti-accumulation open type water circulation filter for the steam turbine, impurities blocked by the filter screen disc are shaken off by the impact generated by repeated collision of the filter screen disc, so that the filter screen disc is prevented from being blocked to reduce the filtering effect, and the cleaning work of the filter screen disc can be completed in daily work; the effects of conveniently filtering impurities and preventing the filter screen disc from being blocked are achieved.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically to an open-type water circulation filter for steam turbines that prevents buildup. Background Technology

[0002] A power plant is a power plant that converts some form of primordial energy into electrical energy to power fixed facilities or transportation. According to the energy type, power plants can be divided into thermal power plants, hydropower plants, nuclear power plants, wind power plants, solar power plants, etc.; while an open-type water circulation filter for steam turbines is a device used in the cooling system of steam turbines. Its main function is to filter impurities in the circulating water to prevent these impurities from adversely affecting the operation of the steam turbine.

[0003] According to announcement number CN220238027U, a steam turbine open-type water circulation filtration mechanism is disclosed. This patent includes a housing, an internal filtration structure, and a sealing cover on the top of the housing. The filtration structure includes a filter plate, support columns, a filter box, mounting holes, mounting blocks, a filter screen, and a filter layer. The filter plate is fixed to the inner wall of the filtration structure, and support columns are installed at each of the four corners. A filter box is fitted onto the top of the filter plate, and mounting holes are pre-drilled at each of the four corners of the filter box. This utility model facilitates the removal and replacement of the filter layer from the top of the device. The design is reasonable; by having wastewater enter from the bottom and filtered wastewater exit from the top, heavier impurities in the wastewater settle to the bottom during steam turbine open-type water circulation treatment, reducing the filtration burden on the filter layer. It can completely flush out impurities such as gravel and mud, preventing accumulation inside the mechanism.

[0004] However, during the above-mentioned use, the filter screen and other filter components are completely fixed, which means that the area in contact with wastewater is also fixed. This makes it easy for impurities in the wastewater to clog this area of ​​the filter screen, affecting the filtration of wastewater. Furthermore, the filter components need to be removed from the filter to clean it, thus affecting the use of the water circulation filter. Utility Model Content

[0005] The purpose of this invention is to provide an open-type water circulation filter for steam turbines that prevents buildup, in order to solve the problems mentioned in the background art.

[0006] To achieve the above object, the utility model provides the following technical solutions: A steam turbine open water circulation filter to prevent accumulation, including a filter housing and a slag discharge pipe. The bottom end of the filter housing is connected to the slag discharge pipe, and the outer wall of the filter housing is connected to a water storage tank through a support platform. The bottom end of the water storage tank is connected to a water suction pipe, and a water pump is installed in the middle of the top end of the water storage tank. The output end of the water pump is connected to a return water pipe. One side of the filter housing away from the return water pipe is connected to a water inlet pipe, and an auxiliary mechanism is arranged in the middle of the filter housing. The auxiliary mechanism includes an end cover, a driving motor, a rotating column, a filter disk, a spring, a support plate, a guide wheel, a fixed seat, a support seat, an extension seat and a fixing pin. The top end of the filter housing is connected to the end cover, and a driving motor is installed in the middle of the top end of the end cover. The output end of the driving motor is connected to the rotating column. The middle part of the outer wall of the rotating column is sleeved with a filter disk, and a spring is connected to the top end of the outer wall of the rotating column. The bottom end of the filter disk is connected to a guide wheel.

[0007] Preferably, the bottom end of the guide wheel is in rolling connection with a fixed seat. One side of the outer wall of the fixed seat is provided with an inclined plane, and the other side of the outer wall of the fixed seat is provided with a vertical plane. The guide wheels are distributed in a "rice" shape.

[0008] Preferably, an extension block is welded to one side of the rotating column close to the spring, and the spring is connected to the extension block and the filter disk respectively on the upper and lower sides. An elastic telescopic mechanism is formed among the rotating column, the filter disk and the spring.

[0009] Preferably, the bottom end of the rotating column is connected to a support plate through a bearing seat, and both sides of the outer wall of the support plate are welded to the inner wall of the filter housing. The bottom end of the fixed seat is welded to a support seat, and the outer wall of the support seat is welded to the inner wall of the filter housing. The support seat is designed in an "O" shape structure.

[0010] Preferably, an extension seat is welded to the outer side of the top end of the filter housing, and a fixing pin is welded to the top of the extension seat. The extension seat is designed in an arc structure and is distributed in a triangular shape.

[0011] Preferably, fixing holes are opened inside the outer side of the end cover, and the fixing pin extends into them. Both the return water pipe and the water inlet pipe are designed in an "L" shape structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When the anti-accumulation open-type water circulation filter for steam turbines is in use, the auxiliary mechanism causes the filtration areas corresponding to the return water pipe and the inlet water pipe to change continuously, preventing the filter screen from being fixed and causing the filtered impurities to clog quickly. The filtration effect is improved by rotating the filter screen. Furthermore, the filter screen is subjected to repeated impacts, which shakes off the impurities blocked by the filter screen, preventing them from becoming clogged and reducing the filtration effect. Thus, the filter screen can be cleaned in daily operation. Therefore, when using the anti-accumulation open-type water circulation filter for steam turbines, it facilitates the filtration of impurities and prevents the filter screen from clogging. Attached Figure Description

[0013] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0014] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0015] Figure 3 This is a top-view perspective view of the three-dimensional structure of the filter housing of this utility model;

[0016] Figure 4 This is a front-view three-dimensional sectional structural diagram of the present invention;

[0017] Figure 5 This is a three-dimensional structural diagram of the auxiliary mechanism of this utility model;

[0018] Figure 6 This is a three-dimensional structural diagram of the fixing base of this utility model.

[0019] In the diagram: 1. Filter housing; 2. Slag discharge pipe; 3. Water storage tank; 4. Water suction pipe; 5. Water pump; 6. Water return pipe; 7. Water inlet pipe; 8. Auxiliary mechanism; 801. End cap; 802. Drive motor; 803. Rotating column; 804. Filter screen; 805. Spring; 806. Support plate; 807. Guide wheel; 808. Fixed seat; 809. Support seat; 810. Extension seat; 811. Fixing pin. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-6, the present utility model provides a technical solution: an anti-accumulation open-type water circulation filter for a steam turbine, which includes a filter housing 1 and a slag discharge pipe 2. The bottom end of the filter housing 1 is butted with the slag discharge pipe 2, and the outer wall of the filter housing 1 is connected to a water storage tank 3 through a support platform. The bottom end of the water storage tank 3 is butted with a water suction pipe 4, and a water pump 5 is installed in the middle of the top end of the water storage tank 3. Moreover, the output end of the water pump 5 is butted with a return water pipe 6. One side of the filter housing 1 far from the return water pipe 6 is connected to a water inlet pipe 7, and an auxiliary mechanism 8 is arranged in the middle of the filter housing 1. And the auxiliary mechanism 8 includes an end cover 801, a driving motor 802, a rotating column 803, a filter disk 804, a spring 805, a support plate 806, a guide wheel 807, a fixed seat 808, a support seat 809, an extension seat 810 and a fixing pin 811. The top end of the filter housing 1 is connected to the end cover 801, and the driving motor 802 is installed in the middle of the top end of the end cover 801. Moreover, the output end of the driving motor 802 is butted with the rotating column 803. The middle part of the outer wall of the rotating column 803 is sleeved with the filter disk 804, and the top end of the outer wall of the rotating column 803 is connected to the spring 805. The bottom end of the filter disk 804 is connected to the guide wheel 807; the bottom end of the guide wheel 807 is in rolling connection with the fixed seat 808, and a slope is provided on one side of the outer wall of the fixed seat 808, and a vertical plane is provided on the other side of the outer wall of the fixed seat 808. The guide wheels 807 are distributed in a "rice" shape; an extension block is welded on one side of the rotating column 803 close to the spring 805, and the spring 805 is respectively connected to the extension block and the filter disk 804 on the upper and lower sides. An elastic telescopic mechanism is formed among the rotating column 803, the filter disk 804 and the spring 805; the bottom end of the rotating column 803 is connected to the support plate 806 through a bearing seat, and both sides of the outer wall of the support plate 806 are welded to the inner wall of the filter housing 1. The bottom end of the fixed seat 808 is welded to the support seat 809, and the outer wall of the support seat 809 is welded to the inner wall of the filter housing 1. Moreover, the support seat 809 is designed in an "O" shape; an extension seat 810 is welded on the outer side of the top end of the filter housing 1, and a fixing pin 811 is welded on the top of the extension seat 810. The extension seat 810 is designed in an arc shape and is distributed in a triangular shape; fixing holes are provided inside the outer side of the end cover 801, and the fixing pin 811 extends into them. Both the return water pipe 6 and the water inlet pipe 7 are designed in an "L" shape; the bottom end of the inner wall of the filter housing 1 is designed in a conical shape, and the support plate 806 is designed in a "one" shape.

[0022] In practical implementation, during the use of this anti-accumulation open-type water circulation filter for steam turbines, when untreated wastewater is guided to the filter screen 804 through the inlet pipe 7, or when filtered wastewater is guided to the filter screen 804 through the return pipe 6, the drive motor 802 is first started to drive the rotating column 803 to rotate. Since the rotating column 803 is connected to the filter screen 804, the rotation of the rotating column 803 will drive the filter screen 804 to rotate together, thereby causing the filtration areas corresponding to the return pipe 6 and the inlet pipe 7 to change continuously. This prevents the filter screen 804 from being fixed and causing the filtered impurities to clog it quickly. Furthermore, the rotation of the filter screen 804 improves the filtration effect. At this time, the support plate 806 provides auxiliary support for the rotation of the rotating column 803.

[0023] Because the bottom of the filter screen 804 is connected to the guide wheel 807, the rotation of the filter screen 804 will drive the guide wheel 807 to rotate as well. Then, as the guide wheel 807 moves, it will move up along the inclined surface of the fixed base 808, thereby generating an upward thrust on the filter screen 804, causing the filter screen 804 to move upward. After that, the upward movement of the filter screen 804 will compress the spring 805, causing it to deform. Then, as the filter screen 804 rotates, when the guide wheel 807 moves to the vertical plane of the fixed base 808, the fixed base 808 will no longer support the guide wheel 807. At this time, the spring 805 will return to its original position, generating elastic force to keep the filter screen 804 in place. 804 moves downwards, causing the guide wheel 807 to move downwards and collide with the support base 809. As the filter screen 804 rotates continuously, the guide wheel 807 will continuously collide with the support base 809, resulting in the filter screen 804 being subjected to repeated impacts. This shakes off the impurities blocked by the filter screen 804, preventing them from clogging the filter screen 804 and reducing the filtration effect. Therefore, there is no need to remove the filter assembly, and the cleaning of the filter screen 804 can be completed in daily operation. Thus, when using the anti-accumulation open water circulation filter for steam turbines, it plays a role in facilitating the filtration of impurities and preventing the filter screen 804 from clogging.

[0024] Since the extension seat 810 is connected to the fixing pin 811, the end cover 801 can be moved up to disengage from the fixing pin 811, thus removing the limit on the end cover 801. Then, with the help of other disassembly tools, the drive motor 802 can be removed, and the end cover 801 can be removed to reveal the filter screen 804. Then, the filter screen 804 can be removed as a whole for cleaning or replacement.

[0025] In summary, when using this anti-accumulation open-type water circulation filter for steam turbines, the water to be treated is first introduced into the filter through the inlet pipe 7. Then, the water flows into contact with the filter screen for filtration. Afterwards, the water pump 5 at the top of the storage tank 3 is activated, causing the suction pipe 4 to transport the water from the bottom of the filter housing 1 to the return pipe 6. The filtered water then re-enters the filter screen through the return pipe 6, thus performing multiple filtrations on the wastewater. Furthermore, the slag discharge pipe 2 completely flushes out impurities such as gravel and mud, preventing their accumulation at the bottom of the filter housing 1. This is existing technology and will not be elaborated upon further here. The auxiliary mechanism 8 causes the filtration areas corresponding to the return water pipe 6 and the inlet water pipe 7 to change continuously, preventing the filter screen 804 from being fixed and causing the filtered impurities to clog it quickly. The rotation of the filter screen 804 also improves the filtration effect. Furthermore, the repeated impacts of the filter screen 804 shake off the impurities blocked by the filter screen 804, preventing it from becoming clogged and reducing the filtration effect. Thus, the cleaning of the filter screen 804 can be completed in daily work, saving time and improving work efficiency. The contents not described in detail in this specification are prior art known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-accumulation open-type water circulation filter for a steam turbine, comprising a filter housing (1) and a slag discharge pipe (2), characterized in that: The bottom end of the filter housing (1) is butted with the slag discharge pipe (2), and a water storage tank (3) is connected to the outer wall of the filter housing (1) through a support platform. The bottom end of the water storage tank (3) is butted with a water suction pipe (4), and a water pump (5) is installed in the middle of the top end of the water storage tank (3). The output end of the water pump (5) is butted with a return water pipe (6). One side of the filter housing (1) away from the return water pipe (6) is connected with a water inlet pipe (7), and an auxiliary mechanism (8) is arranged in the middle of the filter housing (1). The auxiliary mechanism (8) includes an end cover (801), a driving motor (802), a rotating column (803), a filter disk (804), a spring (805), a support plate (806), a guide wheel (807), a fixed seat (808), a support seat (809), an extension seat (810) and a fixing pin (811). The top end of the filter housing (1) is connected with the end cover (801), and a driving motor (802) is installed in the middle of the top end of the end cover (801). The output end of the driving motor (802) is butted with the rotating column (803). The middle part of the outer wall of the rotating column (803) is sleeved with the filter disk (804), and the top end of the outer wall of the rotating column (803) is connected with the spring (805). The bottom end of the filter disk (804) is connected with the guide wheel (807).

2. The anti-accumulation open-type water circulation filter for steam turbines according to claim 1, characterized in that: The bottom end of the guide wheel (807) is in rolling connection with the fixed seat (808). One side of the outer wall of the fixed seat (808) is provided with an inclined surface, and the other side of the outer wall of the fixed seat (808) is provided with a vertical plane. The guide wheels (807) are distributed in a "rice" shape.

3. The anti-accumulation open-type water circulation filter for steam turbines according to claim 2, characterized in that: An extension block is welded on one side of the rotating column (803) close to the spring (805), and the upper and lower sides of the spring (805) are respectively connected with the extension block and the filter disk (804). An elastic telescopic mechanism is formed among the rotating column (803), the filter disk (804) and the spring (805).

4. The anti-accumulation open-type water circulation filter for steam turbines according to claim 3, characterized in that: The bottom end of the rotating column (803) is connected with the support plate (806) through a bearing seat, and both sides of the outer wall of the support plate (806) are welded to the inner wall of the filter housing (1). The bottom end of the fixed seat (808) is welded with the support seat (809), and the outer wall of the support seat (809) is welded to the inner wall of the filter housing (1). The support seat (809) is designed in an "O" shape structure.

5. The anti-accumulation open-type water circulation filter for steam turbines according to claim 4, characterized in that: An extension seat (810) is welded on the outer side of the top end of the filter housing (1), and a fixing pin (811) is welded on the top of the extension seat (810). The extension seat (810) is designed in an arc shape structure. The extension seats (810) are distributed in a triangular shape.

6. The anti-accumulation open-type water circulation filter for steam turbines according to claim 1, characterized in that: A fixing hole is arranged inside the outer side of the end cover (801), and the fixing pin (811) extends into it. Both the return water pipe (6) and the water inlet pipe (7) are designed in an "L" shape structure.

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