High-strength turbine blade

Abstract

The high-strength turbine blade comprises a rotating module, and the rotating module comprises a fan blade, a protruding strip, a plurality of air guide strips, a rough surface arranged on the front side of the fan blade, an air inlet formed in the front side of the fan blade and a plurality of air outlet holes formed in the bottom of the fan blade, and the protruding strip and the air guide strips are connected with the front side of the fan blade. And the plurality of air outlet holes are communicated with the interior of the air inlet. According to the utility model, once steam is in contact with the fan blades, the steam can be blocked by the raised lines and the rough surfaces, so that the impact force of the steam is increased, then the steam flows through the air guide channel and then enters the air inlet, and the impact force of the steam is improved again because the air outlet speed of the air outlet holes is smaller than the air inlet speed of the air inlet, so that the steam utilization rate is effectively improved; and the rotation of the fan blades is more powered.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine blades, in particular to a high-strength steam turbine blade. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with the blades to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices.

[0003] Application number CN201420857907.5 relates to a steam turbine blade, which includes a blade surface and a blade root, wherein the blade surface includes an inner arc surface and an outer arc surface, wherein the inner arc surface is a rough force-contacting surface from one-fifth upward from the bottom to one-third upward from the bottom, and a plurality of small holes are arranged in the long side direction of the blade surface. The utility model can increase the ability to capture the impact force of steam, and improve the utilization rate of steam. When the application is used specifically, after the steam contacts the blade surface, although the resistance increases, the impact force is still insufficient, and the steam utilization rate still has a large room for improvement. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A high-strength steam turbine blade comprises a rotating module, wherein the rotating module comprises a blade, a convex strip and a plurality of wind guide strips connected to the front side of the blade, a rough surface arranged on the front side of the blade, an air inlet opened on the front side of the blade, and a plurality of air outlet holes opened at the bottom of the blade, wherein the plurality of air outlet holes are all connected to the inside of the air inlet.

[0007] By adopting the above technical solution, once the steam contacts the fan blades, it will be blocked by the convex strips and the rough surface, which increases the impact force of the steam. The steam then flows through the air guide channel and enters the air inlet. Because the air outlet speed is lower than the air inlet speed, the impact force of the steam is increased again, which effectively improves the steam utilization rate and makes the fan blades rotate more powerfully.

[0008] In a preferred example, the utility model can be further configured as follows: the convex strips and the fan blades are integrally formed, and the two are made of the same material.

[0009] In a preferred example, the utility model can be further configured as follows: a plurality of air guide strips are arranged in a row at equal intervals, and each air guide strip is arranged at an angle.

[0010] In a preferred example, the utility model can be further configured as follows: an air guiding channel is formed between two adjacent air guiding strips, and the air guiding channel is communicated with the inside of the air inlet.

[0011] In a preferred example, the utility model can be further configured as follows: a connecting piece is plugged into the fan blade, and a threaded hole is provided on the connecting piece.

[0012] In a preferred example, the utility model can be further configured as follows: the threaded holes are provided in a plurality, and the plurality of threaded holes are arranged in a matrix.

[0013] In a preferred example, the utility model can be further configured as follows: a reinforcing rib is provided on the rear side of the fan blade, and the reinforcing rib is welded to the fan blade.

[0014] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0015] 1. In the utility model, once the steam contacts the fan blades, it will be blocked by the convex strips and the rough surface, which increases the impact force of the steam. Then the steam flows through the air guide channel and enters the air inlet. Then, because the air outlet speed is lower than the air inlet speed, the steam impact force is increased again, which effectively improves the steam utilization rate and makes the fan blades rotate more powerfully.

[0016] 2. In the present invention, after the reinforcing ribs strengthen the entire back side of the fan blade, the strength of the fan blade can be improved, the load on the fan blade can be increased, and the probability of damage to the fan blade can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a rear view of the overall structure of the utility model;

[0018] Figure 2 This is a front view of the overall structure of the utility model;

[0019] Figure 3 It is a bottom view of the overall structure of the utility model.

[0020] Reference numerals:

[0021] 100, rotating module; 110, fan blade; 120, convex strip; 130, rough surface; 140, air guide strip; 150, air inlet; 160, air outlet;

[0022] 200, connector;

[0023] 300. Strengthen the ribs. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0025] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0026] A high-strength steam turbine blade provided by some embodiments of the utility model will be described below in conjunction with the accompanying drawings.

[0027] Embodiment 1:

[0028] Combination Figure 1-3 As shown, the utility model provides a high-strength steam turbine blade, including a rotating module 100, wherein the rotating module 100 includes a fan blade 110, a convex strip 120 and a plurality of wind guide strips 140 connected to the front side of the fan blade 110, a rough surface 130 arranged on the front side of the fan blade 110, an air inlet 150 opened on the front side of the fan blade 110, and a plurality of air outlet holes 160 opened at the bottom of the fan blade 110, and the plurality of air outlet holes 160 are all connected to the inside of the air inlet 150.

[0029] Furthermore, the convex strip 120 and the fan blade 110 are integrally formed, and the two are made of the same material. With this structural design, the molding of the convex strip 120 becomes easier.

[0030] Furthermore, a plurality of air guide strips 140 are arranged in a row at equal intervals, and each air guide strip 140 is tilted. This layout design can guide steam to be blown into the air inlet 150, thereby providing conditions for increasing the impact force of the steam.

[0031] Furthermore, an air guiding channel is formed between two adjacent air guiding strips 140 , and the air guiding channel is connected to the inside of the air inlet 150 . The air guiding channel is provided to ensure that steam can enter the inside of the fan blade 110 , thereby increasing the impact force of the steam.

[0032] Embodiment 2:

[0033] Combination Figure 1-3 As shown, on the basis of the first embodiment, a connector 200 is inserted into the fan blade 110, and a threaded hole is opened on the connector 200. The connector 200 can reinforce the fan blade 110 on the one hand, and make it easy to connect the fan blade 110 to the external turbine on the other hand.

[0034] Specifically, the threaded holes are provided in a plurality, and the plurality of threaded holes are arranged in a matrix. With this layout design, the fan blade 110 can be firmly connected to the external steam turbine.

[0035] Embodiment three:

[0036] Combination Figure 1 and Figure 3 As shown, in the above embodiment, a reinforcing rib 300 is provided on the rear side of the fan blade 110, and the reinforcing rib 300 is welded to the fan blade 110. The provision of the reinforcing rib 300 can improve the strength of the fan blade 110 and reduce the probability of damage to the fan blade 110.

[0037] The working principle and use process of the utility model: when the device is put into actual use, once the steam contacts the fan blade 110, it will be blocked by the convex strip 120 and the rough surface 130, which increases the impact force of the steam. Then the steam flows through the air guide channel and then enters the air inlet 150. Then, because the air outlet speed of the air outlet hole 160 is lower than the air inlet speed of the air inlet 150, the steam impact force is increased again, which effectively improves the steam utilization rate and makes the fan blade 110 rotate more powerfully.

[0038] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-strength steam turbine blade, characterized in that: include: A rotation module (100), the rotation module (100) comprising a fan blade (110), a convex strip (120) and a plurality of air guide strips (140) connected to the front side of the fan blade (110), a rough surface (130) arranged on the front side of the fan blade (110), an air inlet (150) opened on the front side of the fan blade (110), and a plurality of air outlet holes (160) opened at the bottom of the fan blade (110), wherein the plurality of air outlet holes (160) are all connected to the inside of the air inlet (150).

2. A high-strength steam turbine blade according to claim 1, characterized in that: The convex strip (120) and the fan blade (110) are integrally formed, and the two are made of the same material.

3. The high-strength steam turbine blade according to claim 1, characterized in that: The plurality of air guide strips (140) are arranged in a row at equal intervals, and each air guide strip (140) is arranged at an incline.

4. The high-strength steam turbine blade according to claim 1, characterized in that: An air guiding channel is formed between two adjacent air guiding strips (140), and the air guiding channel is communicated with the interior of the air inlet (150).

5. The high-strength steam turbine blade according to claim 1, characterized in that: A connecting piece (200) is plugged into the fan blade (110), and a threaded hole is provided on the connecting piece (200).

6. A high-strength steam turbine blade according to claim 5, characterized in that: The threaded holes are provided in a plurality and the plurality of threaded holes are arranged in a matrix.

7. The high-strength steam turbine blade according to claim 1, characterized in that: A reinforcing rib (300) is provided on the rear side of the fan blade (110), and the reinforcing rib (300) is welded to the fan blade (110).

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