A guide vane protection structure for a hydraulic turbine

Abstract

The utility model relates to a guide vane protection technical field especially is a water turbine guide vane protection structure, including axle cylinder and gland, the lower setting baffle and first rubber sleeve inner wall contact, the upper setting baffle and second rubber sleeve inner wall contact, the lower setting column rod and first rubber sleeve inside, axle cylinder inside installation place, the upper setting column rod and second rubber sleeve inside, gland inside installation place, the threaded block outside thread is installed with the threaded cylinder, the top setting silica gel ring and the upper contact of gland, electric telescopic link device drives cavity board to move down, water pump device starts, and the outside clean water passes through flexible telescopic pipe and enters the cavity board inside, and the impurity that prevents the filter screen outside surface intercepts carries out backflush cleaning treatment, and the utility model discloses through above -mentioned setting, and the structure main part is convenient to the water turbine guide vane and carries out the impurity interception protection and regularly backflush cleaning, and the structure main part is easy to combine installation.

Description

Technical Field

[0001] This utility model relates to the field of guide vane protection technology, specifically a guide vane protection structure for a water turbine. Background Technology

[0002] When a water turbine is in use, the water flow and the debris carried in the water flow flow directly into the turbine. The debris carried in the water flow will collide with the guide vanes of the runner, making the guide vanes easy to damage, resulting in a short service life of the water turbine and reducing the economic benefits of the water turbine. It is necessary to install a protective structure for the guide vanes, taking the above-mentioned water turbine guide vane protection structure as an example.

[0003] Some turbine guide vane protection structures are not convenient for intercepting and protecting impurities from the turbine guide vanes or for regular backflushing cleaning. Furthermore, the main structure is not easy to assemble and install. Therefore, a turbine guide vane protection structure is proposed to address these issues. Summary of the Invention

[0004] The purpose of this utility model is to provide a turbine guide vane protection structure to solve the problems of some turbine guide vane protection structures, which are inconvenient for intercepting and protecting the turbine guide vanes from impurities and for regular backflushing cleaning, and are also difficult to assemble and install.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A turbine guide vane protection structure includes a shaft cylinder and a pressure cover. The pressure cover is provided on the top of the shaft cylinder, and a guide vane shaft assembly is installed inside the pressure cover. A protective filter screen is provided between the shaft cylinder and the pressure cover. Two guardrails are symmetrically distributed and fixedly provided on the top and bottom of the protective filter screen. A column is fixedly provided on the end of the guardrail away from the protective filter screen. A threaded block is fixedly provided on the end of the column away from the guardrail. A threaded cylinder is threadedly installed on the outer side of the threaded block. A silicone ring is fixedly provided on the end of the threaded cylinder near the column. A first rubber sleeve is fixedly provided inside the upper part of the shaft cylinder. A second rubber sleeve is fixedly provided inside the lower part of the pressure cover. An electric telescopic rod device is fixedly provided on the top of the pressure cover. A cavity plate is fixedly provided on the top of the electric telescopic rod device. A flexible telescopic tube is provided on the top of the cavity plate.

[0006] Preferably, the lower guardrail is in contact with the inner wall of the first rubber sleeve, and the upper guardrail is in contact with the inner wall of the second rubber sleeve.

[0007] Preferably, the lower column is installed inside the first rubber sleeve and the shaft cylinder, while the upper column is installed inside the second rubber sleeve and the pressure cap.

[0008] Preferably, the silicone ring at the bottom is in contact with the lower part of the shaft, and the silicone ring at the top is in contact with the upper part of the pressure cap.

[0009] Preferably, the cavity plate is installed inside the gland and inside the shaft cylinder.

[0010] Preferably, the rigid tube at the bottom of the flexible telescopic tube is fixedly connected to the inside of the top of the cavity plate, and a flange is fixedly installed on the outside of the rigid tube at the top of the flexible telescopic tube.

[0011] Preferably, the cavity plate has a plurality of through holes symmetrically formed inside.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the lower guardrail is in close contact with the inner wall of the first rubber sleeve, and the upper guardrail is in close contact with the inner wall of the second rubber sleeve. The lower column is installed inside the first rubber sleeve and the shaft cylinder, and the upper column is installed inside the second rubber sleeve and the pressure cap. A threaded cylinder is threadedly installed on the outer side of the threaded block. The bottom silicone ring is in close contact with the lower part of the shaft cylinder, and the top silicone ring is in close contact with the upper part of the pressure cap. The electric telescopic rod device drives the cavity plate to move downward, the water pump device starts, and external clean water enters the cavity plate through the flexible telescopic tube. The water is discharged through the through hole in the cavity plate, and the impurities intercepted on the outer surface of the protective filter screen are backwashed and cleaned. With the above configuration, the main structure facilitates the interception and protection of impurities on the turbine guide vanes and periodic backwashing and cleaning, and the main structure is easy to assemble and install. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the shaft cylinder and pressure cap of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram at point A; Figure 4 This utility model Figure 2 A magnified structural diagram at point B; Figure 5 This utility model Figure 2 A magnified structural diagram at point C; Figure 6 This is a schematic diagram of the cavity plate structure of this utility model.

[0014] In the diagram: 1. Shaft cylinder; 2. Pressure cap; 3. Guide vane shaft assembly; 4. Protective filter screen; 5. Guard plate; 6. Column rod; 7. Threaded block; 8. Threaded cylinder; 9. Silicone ring; 10. First rubber sleeve; 11. Second rubber sleeve; 12. Electric telescopic rod device; 13. Cavity plate; 14. Flexible telescopic tube; 15. Flange. Detailed Implementation

[0015] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0016] In the embodiments of the utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the position or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the 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. Therefore, they should not be construed as limitations of the utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Similarly, words such as "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. Words such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects.

[0017] Furthermore, in the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0018] Please see Figure 1-6 This utility model provides a technical solution: A turbine guide vane protection structure includes a shaft cylinder 1 and a pressure cover 2. The pressure cover 2 is provided on the top of the shaft cylinder 1. A guide vane shaft assembly 3 is installed inside the pressure cover 2. A protective filter screen 4 is provided between the shaft cylinder 1 and the pressure cover 2. Two guardrails 5 are symmetrically distributed and fixedly provided on the top and bottom of the protective filter screen 4. A column rod 6 is fixedly provided on the end of the guardrail 5 away from the protective filter screen 4. A threaded block 7 is fixedly provided on the end of the column rod 6 away from the guardrail 5. A threaded cylinder 8 is threadedly installed on the outside of the threaded block 7. A silicone ring 9 is fixedly provided on the end of the threaded cylinder 8 near the column rod 6. A first rubber sleeve 10 is fixedly provided inside the upper part of the shaft cylinder 1. A second rubber sleeve 11 is fixedly provided inside the lower part of the pressure cover 2. An electric telescopic rod device 12 is fixedly provided on the top of the pressure cover 2. A cavity plate 13 is fixedly provided on the top of the electric telescopic rod device 12. A flexible telescopic tube 14 is provided on the top of the cavity plate 13.

[0019] The lower guardrail 5 is in close contact with the inner wall of the first rubber sleeve 10, and the upper guardrail 5 is in close contact with the inner wall of the second rubber sleeve 11. Through the above arrangement, a sealed installation structure is formed between the guardrail 5, the shaft cylinder 1, and the pressure cover 2.

[0020] The lower column rod 6 is installed inside the first rubber sleeve 10 and the shaft cylinder 1, while the upper column rod 6 is installed inside the second rubber sleeve 11 and the pressure cap 2. This arrangement facilitates the installation and positioning of the column rod 6.

[0021] The silicone ring 9 at the bottom is in contact with the lower part of the shaft cylinder 1, and the silicone ring 9 at the top is in contact with the upper part of the pressure cover 2. Through the above arrangement, the silicone ring 9 achieves the effect of sealing installation.

[0022] The cavity plate 13 is installed inside the gland 2 and the shaft cylinder 1. With the above arrangement, the bottom of the cavity plate 13 fits and is limited inside the shaft cylinder 1 after installation.

[0023] The rigid pipe at the bottom of the flexible telescopic tube 14 is fixedly connected to the inside of the top of the cavity plate 13. A flange 15 is fixedly installed on the outside of the rigid pipe at the top of the flexible telescopic tube 14. Through the above arrangement, external cleaning water enters the cavity plate 13 through the flexible telescopic tube 14.

[0024] The cavity plate 13 has several symmetrical through holes. Through the above arrangement, water is discharged through the through holes in the cavity plate 13 to backwash and clean the impurities intercepted on the outer surface of the protective filter screen 4.

[0025] Work process: The utility model provides a turbine guide vane protection structure. The main body of the structure facilitates the interception and protection of impurities on the turbine guide vanes and regular backflushing cleaning. The main body of the structure is also easy to assemble and install.

[0026] The top of the flange 15 is connected to the outlet pipe of the external water pump device. The electric telescopic rod device 12 is powered by an external power supply device and controlled by an external PLC controller.

[0027] The protective filter screen 4, guardrail 5, column rod 6, and threaded block 7 are an integrated assembly. The lower guardrail 5 is in contact with the inner wall of the first rubber sleeve 10, and the upper guardrail 5 is in contact with the inner wall of the second rubber sleeve 11. The lower column rod 6 is installed inside the first rubber sleeve 10 and the shaft cylinder 1, and the upper column rod 6 is installed inside the second rubber sleeve 11 and the pressure cap 2. A threaded cylinder 8 is threaded onto the outer side of the threaded block 7. The silicone ring 9 at the bottom is in contact with the lower part of the shaft cylinder 1. The top is... The silicone ring 9 is placed in contact with the top of the pressure cap 2. The electric telescopic rod device 12 drives the cavity plate 13 to move downward until the cavity plate 13 is slidably installed inside the pressure cap 2 and the shaft cylinder 1, until the bottom of the cavity plate 13 is in contact with the shaft cylinder 1 and the limit is reached. The water pump device is started, and external cleaning water enters the cavity plate 13 through the flexible telescopic tube 14. The water is discharged through the through hole set in the cavity plate 13 to backwash and clean the impurities intercepted on the outer surface of the protective filter screen 4. After cleaning, the electric telescopic rod device 12 drives the cavity plate 13 to reset.

[0028] Although embodiments of the utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A turbine guide vane protection structure, comprising a shaft sleeve (1) and a pressure cover (2), characterized in that: A pressure cap (2) is provided on the top of the shaft cylinder (1). A guide vane shaft assembly (3) is installed inside the pressure cap (2). A protective filter screen (4) is provided between the shaft cylinder (1) and the pressure cap (2). Two guardrails (5) are symmetrically distributed and fixedly provided on the top and bottom of the protective filter screen (4). A column rod (6) is fixedly provided at the end of the guardrail (5) away from the protective filter screen (4). A threaded block (7) is fixedly provided at the end of the column rod (6) away from the guardrail (5). A threaded cylinder (8) is threadedly installed on the outside of the threaded block (7). A silicone ring (9) is fixedly provided at the end of the threaded cylinder (8) near the column rod (6). A first rubber sleeve (10) is fixedly provided inside the upper part of the shaft cylinder (1). A second rubber sleeve (11) is fixedly provided inside the lower part of the pressure cap (2). An electric telescopic rod device (12) is fixedly provided at the top of the pressure cap (2). A cavity plate (13) is fixedly provided at the top of the electric telescopic rod device (12). A flexible telescopic tube (14) is provided at the top of the cavity plate (13).

2. The turbine guide vane protection structure according to claim 1, characterized in that: The lower guardrail (5) is in contact with the inner wall of the first rubber sleeve (10), and the upper guardrail (5) is in contact with the inner wall of the second rubber sleeve (11).

3. The turbine guide vane protection structure according to claim 1, characterized in that: The column rod (6) set below is installed inside the first rubber sleeve (10) and inside the shaft cylinder (1), while the column rod (6) set above is installed inside the second rubber sleeve (11) and inside the pressure cap (2).

4. The turbine guide vane protection structure according to claim 1, characterized in that: The silicone ring (9) at the bottom is in contact with the lower part of the shaft (1), and the silicone ring (9) at the top is in contact with the upper part of the pressure cap (2).

5. The turbine guide vane protection structure according to claim 1, characterized in that: The cavity plate (13) is installed inside the cover (2) and inside the shaft cylinder (1).

6. The turbine guide vane protection structure according to claim 1, characterized in that: The rigid tube at the bottom of the flexible telescopic tube (14) is fixedly connected to the inside of the top of the cavity plate (13), and a flange (15) is fixedly installed on the outside of the rigid tube at the top of the flexible telescopic tube (14).

7. The turbine guide vane protection structure according to claim 1, characterized in that: The cavity plate (13) has several through holes symmetrically opened inside.

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