Backwashing device for cooling system of water-turbine generator set

Abstract

The utility model discloses a backwashing device for a cooling system of a water-turbine generator set, which belongs to the technical field of filters and comprises a backwashing assembly, the backwashing assembly comprises a shell and a cover plate, the outer surface of the shell is communicated with a water inlet pipe, a first valve is mounted on the outer surface of the water inlet pipe, and a second valve is mounted on the outer surface of the cover plate. The outer surface of the water inlet pipe communicates with a water guide pipe, a second valve is installed on the outer surface of the water guide pipe, and the outer surface of the shell communicates with a water outlet pipe. The filter screen can be replaced or maintained by people, the filter screen can be more stable in the working process, and by arranging a sealing ring, a water guide pipe and a second valve, the equipment can be used for backwashing impurities on the surface of the filter screen, so that the filtering effect of the filter screen is greatly improved, and the sealing effect of the equipment is better.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically a backwashing device for a hydro-generator cooling system. Background Technology

[0002] During operation, hydro-turbine generator sets generate heat. The main heat-generating components are the stator, rotor, upper guide bearing, lower guide thrust bearing, and water guide bearing. The heat generated by these components is carried away by the heat exchanger using external cold water, thus controlling the temperature of the unit within a certain range. The external cold water supply system is the cooling water supply system of the hydro-turbine generator set. During operation, the cooling water supply system of the hydro-turbine generator set requires the use of a backwashing device. The backwashing device is a filter used to remove impurities from the water and is one of the main pieces of equipment in the hydropower station's water supply system. Its performance directly affects the operation of the entire water supply system.

[0003] Existing backwashing devices for hydro-generator sets are all integral units. When internal parts are damaged, they cannot be disassembled for internal inspection, limiting their applicability. When the filter element is damaged, it cannot be replaced, affecting the filtration effect. Therefore, those skilled in the art have provided a backwashing device for the cooling system of hydro-generator sets to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a backwashing device for a hydro-generator cooling system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A backflushing device for a cooling system of a hydro-generator set includes a backflushing assembly. The backflushing assembly includes a housing and a cover plate. An inlet pipe is connected to the outer surface of the housing. A first valve is installed on the outer surface of the inlet pipe. A guide pipe is connected to the outer surface of the inlet pipe. A second valve is installed on the outer surface of the guide pipe. An outlet pipe is connected to the outer surface of the housing. A third valve is installed on the outer surface of the outlet pipe. A drain pipe is connected to the outer surface of the housing. A fourth valve is installed on the outer surface of the drain pipe.

[0007] As a further embodiment of this utility model: the end of the water guide pipe away from the water inlet pipe is connected to the shell, and two support plates are installed on the outer surface of the shell, with a stabilizing plate installed on one side of each of the two support plates.

[0008] As a further improvement of this utility model: reinforcing plates are installed on the outer surfaces of both support plates, and one side of each of the two reinforcing plates is connected to the shell.

[0009] As a further improvement of this utility model: two sets of mounting holes are provided on the outer surface of the cover plate and the outer surface of the shell, and the inner wall of each set of mounting holes is threaded with mounting screws.

[0010] As a further improvement of this utility model: a fixing plate is installed on the inner wall of the shell, and water guides are arranged at equal intervals on the outer surface of the fixing plate.

[0011] As a further improvement of this utility model: the outer surface of the fixing plate is provided with equidistant limiting grooves, and a filter screen is snapped into the interior of each limiting groove.

[0012] As a further improvement of this utility model: one side of the cover plate is equipped with baffles arranged at equal intervals, and the inner wall of each set of baffles is in contact with the filter screen.

[0013] As a further improvement of this utility model: the inner wall of the housing is provided with three sets of sliding grooves, each set of sliding grooves is slidably connected to the filter screen, and a sealing ring is installed on one side of the cover plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This backwashing device for the cooling system of a hydro-generator set, through the setting of mounting holes, mounting screws, limit grooves, sliding grooves and baffles, not only allows people to disassemble and install the cover plate, so that people can replace or repair the filter screen, but also makes the filter screen more stable during operation. The setting of sealing ring, water guide pipe and second valve not only allows the equipment to backwash impurities on the surface of the filter screen, thereby greatly increasing the filtration effect of the filter screen, but also makes the sealing effect of the equipment better. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of a backwashing device for a hydro-generator cooling system;

[0017] Figure 2 A side view of a backflushing device for a hydro-generator cooling system;

[0018] Figure 3 A bottom view of a backflushing device for a hydro-generator cooling system;

[0019] Figure 4 This is a front sectional view of the casing of a backflushing device used in a cooling system of a hydro-generator set;

[0020] Figure 5 This is a top sectional view of the casing of a backflushing device used in a cooling system of a hydro-generator set.

[0021] In the diagram: 1. Backwash assembly; 101. Fixing plate; 102. Limiting groove; 103. Filter screen; 104. Water inlet; 105. Cover plate; 106. Baffle; 107. Mounting hole; 108. Mounting screw; 109. Sealing ring; 110. Housing; 111. Sliding groove; 2. Inlet pipe; 3. First valve; 4. Water guide pipe; 5. Second valve; 6. Outlet pipe; 7. Third valve; 8. Fourth valve; 9. Drain pipe; 10. Support plate; 11. Stabilizing plate; 12. Reinforcing plate. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figures 1-5In this embodiment of the present invention, a backwashing device for a hydro-generator cooling system includes a backwashing assembly 1. The backwashing assembly 1 includes a housing 110 and a cover plate 105. An inlet pipe 2 is connected to the outer surface of the housing 110. A first valve 3 is installed on the outer surface of the inlet pipe 2. A guide pipe 4 is connected to the outer surface of the inlet pipe 2. A second valve 5 is installed on the outer surface of the guide pipe 4. An outlet pipe 6 is connected to the outer surface of the housing 110. A third valve 7 is installed on the outer surface of the outlet pipe 6. A drain pipe 9 is connected to the outer surface of the housing 110. A fourth valve 8 is installed on the outer surface of the drain pipe 9. This device not only improves the filtration effect of the cooling water for the hydro-generator but also enables the device to backwash the filter screen 103. This solves the problems mentioned in the background art, where existing backwashing devices for hydro-generators are all integral units, and cannot be disassembled for internal repair when internal parts are damaged, resulting in a narrow application range; and when the filter element is damaged, it cannot be replaced, affecting the filtration effect.

[0025] The end of the water guide pipe 4 away from the water inlet pipe 2 is connected to the housing 110. Two support plates 10 are installed on the outer surface of the housing 110. A stabilizing plate 11 is installed on one side of each of the two support plates 10. A reinforcing plate 12 is installed on the outer surface of each of the two support plates 10. One side of each reinforcing plate 12 is connected to the housing 110. Two sets of mounting holes 107 are opened on the outer surface of the cover plate 105 and the outer surface of the housing 110. The inner wall of each set of mounting holes 107 is threaded with mounting screws 108. A fixing plate 101 is installed on the inner wall of the housing 110. Water guide ports 104 are arranged at equal intervals on the outer surface of the fixing plate 101, which allows people to disassemble and install the cover plate 105, making it convenient for people to replace or repair it.

[0026] The outer surface of the fixed plate 101 is provided with equidistantly arranged limiting grooves 102, and each limiting groove 102 is fitted with a filter screen 103. One side of the cover plate 105 is provided with equidistantly arranged baffles 106, and the inner wall of each set of baffles 106 is in contact with the filter screen 103. The inner wall of the housing 110 is provided with three sets of sliding grooves 111, and each set of sliding grooves 111 is slidably connected with the filter screen 103. One side of the cover plate 105 is provided with a sealing ring 109, which not only improves the sealing effect of the equipment, but also makes the filter screen 103 more stable during the operation of the equipment.

[0027] The working principle of this utility model is as follows: First, the inlet pipe 2 and outlet pipe 6 can be connected to the cooling system of the water turbine generator set, and the first valve 3 and the third valve 7 can be opened. After multiple filtrations by the filter screen 103, the water circulates in the cooling system through the outlet pipe 6. When the filter screen 103 needs to be cleaned, the first valve 3 and the third valve 7 can be closed and the second valve 5 and the fourth valve 8 can be opened. The reverse water flow can clean the impurities on the surface of the filter screen 103. The wastewater generated during rinsing is discharged through the drain pipe 9. When the filter screen 103 needs to be replaced or inspected, the mounting screws 108 can be removed and the cover plate 105 can be removed. Then the filter screen 103 can be taken out and processed. The sealing ring 109 can prevent leakage at the connection between the housing 110 and the cover plate 105.

[0028] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A backwash device for a cooling system of a hydroelectric generating unit, comprising a backwash assembly (1), characterized in that, The back flushing assembly (1) comprises a shell (110) and a cover plate (105), the outer surface of the shell (110) is communicated with a water inlet pipe (2), the outer surface of the water inlet pipe (2) is installed with a first valve (3), the outer surface of the water inlet pipe (2) is communicated with a water guide pipe (4), the outer surface of the water guide pipe (4) is installed with a second valve (5), the outer surface of the shell (110) is communicated with a water outlet pipe (6), the outer surface of the water outlet pipe (6) is installed with a third valve (7), the outer surface of the shell (110) is communicated with a drain pipe (9), and the outer surface of the drain pipe (9) is installed with a fourth valve (8).

2. A backwash device for a cooling system of a hydroelectric generating unit according to claim 1, characterized in that, The water guide pipe (4) is communicated with the shell (110) away from the water inlet pipe (2), the outer surface of the shell (110) is installed with two supporting plates (10), and the side surface of each of the two supporting plates (10) is installed with a stabilizing plate (11).

3. A backwash device for a cooling system of a hydroelectric generating unit according to claim 2, characterized in that, The outer surface of each of the two supporting plates (10) is installed with a reinforcing plate (12), and the side surface of each of the two reinforcing plates (12) is connected with the shell (110).

4. A backwash device for a cooling system of a hydroelectric generating unit according to claim 1, characterized in that, The outer surface of the cover plate (105) and the outer surface of the shell (110) are both provided with two groups of mounting holes (107), and the inner wall of each group of mounting holes (107) is screwed with a mounting screw (108).

5. A backwash device for a cooling system of a hydroelectric generating unit according to claim 1, characterized in that, The inner wall of the shell (110) is installed with a fixed plate (101), and the outer surface of the fixed plate (101) is provided with equidistantly arranged water guide openings (104).

6. A backwash device for a cooling system of a hydroelectric generating unit according to claim 5, characterized in that, The outer surface of the fixed plate (101) is provided with equidistantly arranged limiting grooves (102), and the inner part of each limiting groove (102) is clamped with a filter screen (103).

7. A backwash device for a cooling system of a hydroelectric generating unit according to claim 1, characterized in that, One side surface of the cover plate (105) is installed with equidistantly arranged baffles (106), and the inner wall of each group of baffles (106) is in contact with the filter screen (103).

8. A backwash device for a cooling system of a hydroelectric generating unit according to claim 1, characterized in that, The inner wall of the shell (110) is provided with three groups of sliding grooves (111), each group of sliding grooves (111) is in sliding connection with the filter screen (103), and one side surface of the cover plate (105) is installed with a sealing ring (109).

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