A self-cleaning device for preventing scale buildup on steam turbine blades

Abstract

This utility model discloses a self-cleaning device for preventing scale buildup on steam turbine blades, relating to the field of steam turbine structural technology. It includes an impeller body, a blade body for facing the steam rotation, a reinforcing rod for reinforcing the blade body, a flow guide channel located on the side of the reinforcing rod facing the impeller body axis, and a flow guide rod, the main body of which is fixed to the side of the reinforcing rod away from the impeller body axis, one end of which is connected to the flow guide channel, and its extension line points towards the leeward side of the blade body. When accumulated water is thrown out through the flow guide channel by the flow guide rod, it is thrown onto the leeward side of the blade body. By setting a flow guide channel within the reinforcing rod and cooperating with the flow guide rod to throw accumulated water onto the leeward side of the blade, residual moisture on the blade surface is effectively guided and discharged, significantly reducing water adhesion caused by steam condensation or the operating environment, thereby preventing scale deposition and improving the cleanliness and efficiency of the blades during long-term operation.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine structure technology, specifically to a self-cleaning device for preventing scale buildup on steam turbine blades. Background Technology

[0002] In thermal or nuclear power generation, the steam turbine is a key piece of equipment that converts the thermal energy of steam into mechanical energy, and its efficiency directly affects the overall performance of the power generation system. As components that come into direct contact with high-temperature and high-pressure steam, the turbine blades not only convert the kinetic energy of steam into rotational kinetic energy, but also endure harsh conditions such as high-speed impact and wet steam scouring over long periods of time.

[0003] However, as moisture in the steam condenses, especially in the low-pressure cylinder region, water and scale easily accumulate on the blade surface, particularly on its leeward side. This can induce structural damage such as localized corrosion and fatigue failure, affecting the long-term operating efficiency of the blades. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a self-cleaning device for preventing scale buildup on steam turbine blades.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A self-cleaning device for preventing scale buildup on steam turbine blades includes:

[0007] Impeller body;

[0008] The blade body is designed to rotate in response to water vapor.

[0009] Reinforcing rods are used to reinforce the blade body;

[0010] The flow guide channel is located on the side of the reinforcing rod facing the impeller body axis;

[0011] The guide rod is fixed to the side of the reinforcing rod facing away from the impeller body axis. One end of the guide rod is connected to the guide channel, and its extension line points to the leeward side of the blade body.

[0012] When the accumulated water is thrown out by the guide rod through the guide channel, it is thrown onto the leeward side of the blade body.

[0013] Preferably, the aforementioned guide rod has the same torsional direction as the blade body, and is used to cooperate with the rotation of the blade body.

[0014] Preferably, the aforementioned flow guiding channel includes a flow guiding groove and a collection groove. The flow guiding groove is disposed through the side of the reinforcing rod facing the impeller body, and the collection groove is disposed at intervals from the blade body and passes through the reinforcing rod, for guiding accumulated water to the flow guiding rod.

[0015] Preferably, a flow channel is provided on the leeward side of the blade body located between the reinforcing rod and the impeller body axis, and the flow channel is connected to the guide channel.

[0016] Preferably, the aforementioned guide rod is arranged in an arc shape, and its bending direction is consistent with the rotation direction of the blade body.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. By setting a flow channel inside the reinforcing rod and using the flow guide rod to throw the accumulated water to the leeward side of the blade, the residual moisture on the blade surface is effectively guided and discharged, significantly reducing water accumulation caused by water vapor condensation or the operating environment, thereby preventing scale buildup and improving the cleanliness and efficiency of the blade during long-term operation.

[0019] 2. The reinforcing rods are not only used for water guidance, but also for reinforcing the blade body, which improves the structural strength and vibration resistance of the turbine blades during high-speed rotation, helps to reduce mechanical fatigue and fracture risk, and extends the service life of the blades and the whole machine. Attached Figure Description

[0020] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0021] Figure 1 This is a schematic diagram of the structure of the self-cleaning device for preventing scale buildup on turbine blades.

[0022] Figure 2 for Figure 1 A diagram from one side;

[0023] Figure 3 for Figure 2 A sectional view;

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0025] Explanation of annotations in the diagram:

[0026] 11. Blade body; 111. Drainage groove;

[0027] 12. Reinforcing rod; 121. Flow guide channel; 122. Aggregation channel;

[0028] 13. Guide rod. Detailed Implementation

[0029] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0030] Example

[0031] like Figures 1-4 As shown, a self-cleaning device for preventing scale buildup on turbine blades includes an impeller body, which includes a blade body 11, a reinforcing rod 12, and a guide rod 13.

[0032] In one embodiment, such as Figures 2-4 As shown, the blade body 11 is used to rotate towards the water vapor, the reinforcing rod 12 is used to reinforce the blade body 11, the flow guide channel is opened on the side of the reinforcing rod 12 facing the impeller body axis, the main body of the flow guide rod 13 is fixed to the side of the reinforcing rod 12 away from the impeller body axis, one end of which is connected to the flow guide channel, and its extension line points to the leeward side of the blade body 11. When the accumulated water is thrown out by the flow guide rod 13 through the flow guide channel, it is thrown onto the leeward side of the blade body 11.

[0033] When water vapor is blown onto the blade body 11, it causes the blade body 11 to rotate. The blade body 11 then drives the generator to rotate and generate electricity. A guide rod 13 is installed in the gap of the blade body 11, and the direction of the guide rod 13 is the same as the direction of the rotation of the blade body 11, thereby increasing the utilization rate of water vapor.

[0034] The blade body 11 is reinforced by the reinforcing rod 12, improving the stability of the impeller body during rotation. The reinforcing rod 12 can also collect residual water on the leeward side of the blade body 11 near the impeller body axis and guide it to the collection tank 122 through the guide groove 121. Subsequently, the residual water is thrown to the leeward side of the blade body 11 away from the impeller body axis by the guide rod 13, thus completing the diversion of residual water.

[0035] In one embodiment, such as Figures 1-4As shown, the guide rod 13 rotates in the same direction as the blade body 11, and is used to cooperate with the rotation of the blade body 11. Specifically, the guide rod 13 is located on the side of the reinforcing rod 12 facing away from the impeller body axis, and extends in the same direction of rotation as the blade body 11. One end of the guide rod 13 is connected to the guide channel, and the other end is directed towards the leeward side of the blade body 11. The guide rod 13 is arranged in an arc shape, and its bending direction is consistent with the rotation direction of the blade body 11. This allows the guide rod 13 to work synergistically with the blade body 11 during rotation, which can utilize the rotational kinetic energy of the blade body 11 to enhance the water-throwing effect, increase the momentum of the water droplets, and thus more effectively throw the accumulated residual water towards the leeward side, further improving the self-cleaning efficiency and helping to improve the utilization rate of water vapor.

[0036] In one embodiment, such as Figures 2-4 As shown, the flow guiding channel includes a flow guiding groove 121 and a collection groove 122. The flow guiding groove 121 is installed through the reinforcing rod 12 on the side facing the impeller body. The collection groove 122 is spaced apart from the blade body 11 and also extends through the reinforcing rod 12. It is used to guide accumulated water to the flow guiding rod 13. By setting the flow guiding groove 121 and the collection groove 122, a multi-stage water guiding structure is formed, so that the water accumulated by water vapor condensation or the water adsorbed during operation first flows into the flow guiding groove 121 from the diversion groove 111, then gathers in the collection groove 122, and finally is thrown towards the leeward side of the blade body 11 away from the axis by the flow guiding rod 13. This structure improves drainage efficiency, prevents scale accumulation, and enhances the stability of the device.

[0037] In one embodiment, such as Figures 2-4 As shown, a drainage groove 111 is provided on the leeward side of the blade body 11, located between the reinforcing rod 12 and the impeller body shaft. The drainage groove 111 is connected to the guide groove 121, allowing accumulated water to smoothly enter the guide structure. The drainage groove 111 can directly collect residual water in the area near the shaft of the blade body 11 and quickly guide it into the guide groove 121 inside the reinforcing rod 12. After being collected by the collection groove 122, it is discharged through the guide rod 13. This structure can effectively reduce the long-term retention of water on the leeward side of the blade body 11, prevent the formation of scale, improve the self-cleaning effect, and extend the blade life.

[0038] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A steam turbine blade anti-fouling self-cleaning device, characterized by, include: Impeller body; The blade body (11) is used to rotate in front of water vapor; A reinforcing rod (12) is used to reinforce the blade body (11); A flow guide channel is provided on the side of the reinforcing rod (12) facing the impeller body axis; The guide rod (13) is fixed to the side of the reinforcing rod (12) facing away from the impeller body axis. One end of the rod is connected to the guide channel, and its extension line points to the leeward side of the blade body (11). When the accumulated water is thrown out by the guide rod (13) through the guide channel, it is thrown onto the leeward side of the blade body (11).

2. A turbine blade anti-fouling self-cleaning device according to claim 1, characterized in that: The guide rod (13) has the same twisting direction as the blade body (11) and is used to cooperate with the rotation of the blade body (11).

3. A turbine blade anti-fouling self-cleaning device according to claim 2, characterised in that: The flow channel includes a flow channel (121) and a collection channel (122). The flow channel (121) is disposed through the side of the reinforcing rod (12) facing the impeller body. The collection channel (122) is spaced apart from the blade body (11) and passes through the reinforcing rod (12), and is used to guide the accumulated water to the flow channel (13).

4. A turbine blade anti-fouling self-cleaning device according to claim 3, characterised in that: The blade body (11) has a flow channel (111) on the leeward side of the section between the reinforcing rod (12) and the impeller body axis, and the flow channel (111) is connected to the flow guide channel (121).

5. A turbine blade anti-fouling self-cleaning device according to claim 1, characterized in that: The guide rod (13) is arranged in an arc shape, and its bending direction is consistent with the rotation direction of the blade body (11).

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