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CN-224228774-U - Double-layer large guide vane with build-up welding

CN224228774UCN 224228774 UCN224228774 UCN 224228774UCN-224228774-U

Abstract

The utility model provides a double-layer large guide vane with build-up welding, which relates to the technical field of hydroelectric machinery and comprises a vane main body, wherein the surface of the vane main body is provided with a connecting surface, one side of the vane main body is provided with a guide vane shaft, the top of the guide vane shaft is provided with a shaft positioning pin groove, the top of the guide vane shaft is provided with a positioning hole, the vane main body is provided with a circular groove and a vane positioning pin groove, and the guide vane shaft penetrates into and is fixed through a positioning pin, so that the connection is stable, the fluid impact force can be effectively dispersed, and the risk of impact damage to the vane main body is reduced. The section of the blade main body is in a drop shape, which accords with the fluid dynamics principle, can reduce the impact force of fluid on the guide vane and reduce abrasion. The inside strengthening rib that sets up of blade main part is welded, has strengthened the holistic structural strength of blade main part, improves its shock resistance, reduces deformation and damage because of the impact leads to. The guide vane shaft is designed to be stepped, and the front end positioning hole has specific depth and outer diameter, so that accurate positioning is provided for installation and fixation of the guide vane, and stable operation is ensured.

Inventors

  • WANG HUAJUN
  • WANG ZAIXING
  • Jiang Zihang

Assignees

  • 浙江赛渤电力科技有限公司

Dates

Publication Date
20260512
Application Date
20250521

Claims (7)

  1. 1. The double-layer large guide vane with the build-up welding comprises a vane main body (1) and is characterized in that a connecting surface (9) is arranged on the surface of the vane main body (1), a guide vane shaft (2) is arranged on one side of the vane main body (1), a shaft positioning pin groove (7) is formed in the top of the guide vane shaft (2), and a positioning hole (6) is formed in the top of the guide vane shaft (2).
  2. 2. The double-layer large guide vane with build-up welding as claimed in claim 1, wherein the surface of the guide vane shaft (2) is provided with a first build-up welding (3), a second build-up welding (4) and a third build-up welding (5), and the first build-up welding (3), the second build-up welding (4) and the third build-up welding (5) are respectively subjected to heat treatment with the surface of the guide vane shaft (2).
  3. 3. The double-layer large guide vane with build-up welding as claimed in claim 1, wherein a circular groove (11) is formed in one side of the guide vane shaft (2), and the circular groove (11) is subjected to cutting treatment.
  4. 4. The double-layer large guide vane with build-up welding as claimed in claim 1, wherein a locating pin strip (8) is arranged on one side of the shaft locating pin groove (7), and the locating pin strip (8) is clamped with the shaft locating pin groove (7).
  5. 5. The double-layer large guide vane with build-up welding as claimed in claim 1, wherein the surface of the vane body (1) is provided with a trimming edge (10), and the vane body (1) and the trimming edge (10) are connected by adopting bolts.
  6. 6. The double-layer large guide vane with build-up welding as claimed in claim 1, wherein a vane positioning pin groove (13) is formed in the guide vane shaft (2), and the vane positioning pin groove (13) is in positioning connection with the guide vane shaft (2).
  7. 7. The double-layer large guide vane with build-up welding as claimed in claim 1, wherein a reinforcing rib (12) is arranged on one side of the vane main body (1), and the reinforcing rib (12) and the vane main body (1) are welded.

Description

Double-layer large guide vane with build-up welding Technical Field The utility model relates to the technical field of hydroelectric machinery, in particular to a double-layer large guide vane with build-up welding. Background The utility model discloses a water turbine with eccentric flat guide vanes, which belongs to the technical field of water turbines and comprises a rotating shaft, a fixed plate and a telescopic rod, wherein a plurality of guide vane bodies are arranged on the outer side wall of the middle of the rotating shaft, the fixed plate is arranged on the outer side walls of the two ends of the rotating shaft, a giant bearing is arranged in an inner cavity of the fixed plate, the two ends of the rotating shaft are positioned in an inner ring of the giant bearing, and a plurality of telescopic rods are arranged between the outer side walls of the two ends of the rotating shaft and the inner ring of the giant bearing. According to the utility model, after water flow impacts on the guide vane body, the guide vane body rotates, generated power is transmitted to equipment requiring power through the rotating shaft, and when broken stone in the water is impacted on the guide vane body, the guide vane body is impacted, impact force is transmitted to the rotating shaft, and the telescopic rod and the spring on the rotating shaft are stressed and compressed, so that the damage force of the broken stone on the guide vane body is reduced, and the service life of the guide vane is prolonged. The following technical problems exist in the above-mentioned comparison document and the prior art: 1. The guide vane operates in high-speed fluid, can be impacted and corroded by the fluid, can also cause abrasion and corrosion on the surface of the guide vane and the guide vane shaft, and reduces the service life and performance of the guide vane. Disclosure of utility model The utility model aims to solve the defects in the prior art, and provides a double-layer large guide vane with build-up welding. In order to achieve the purpose, the double-layer large guide vane with the build-up welding comprises a vane main body, wherein a connecting surface is arranged on the surface of the vane main body, a guide vane shaft is arranged on one side of the vane main body, a shaft positioning pin groove is formed in the top of the guide vane shaft, and a positioning hole is formed in the top of the guide vane shaft. Preferably, the surface of the guide vane shaft is provided with a first build-up welding, a second build-up welding and a third build-up welding, and the first build-up welding, the second build-up welding and the third build-up welding are respectively heat treated with the surface of the guide vane shaft. Preferably, a circular groove is formed in one side of the guide vane shaft, and the circular groove is cut. Preferably, a positioning pin strip is arranged on one side of the shaft positioning pin groove, and the positioning pin strip is clamped with the shaft positioning pin groove. Preferably, the surface of the blade main body is provided with a trimming edge, and the blade main body is connected with the trimming edge through a bolt. Preferably, a blade positioning pin groove is formed in the guide vane shaft, and the blade positioning pin groove is in positioning connection with the guide vane shaft. Preferably, a reinforcing rib is arranged on one side of the blade main body, and the reinforcing rib and the blade main body are welded. Advantageous effects In the utility model, the circular groove and the blade locating pin groove are formed in the blade main body, the guide vane shaft penetrates through and is fixed through the locating pin, the connection is stable, the fluid impact force can be effectively dispersed, and the risk of impact damage to the blade main body is reduced. The section of the blade main body is in a drop shape, which accords with the fluid dynamics principle, can reduce the impact force of fluid on the guide vane and reduce abrasion. The inside strengthening rib that sets up of blade main part is welded, has strengthened the holistic structural strength of blade main part, improves its shock resistance, reduces deformation and damage because of the impact leads to. The parallelism tolerance of the connecting surface and the trimming edge of the surface of the blade main body relative to the guide vane shaft is only 0.1mm, so that the stability and the fluency of the guide vane in operation are ensured, and the extra impact and abrasion caused by fluid turbulence are reduced. The guide vane shaft is designed to be stepped, and the front end positioning hole has specific depth and outer diameter, so that accurate positioning is provided for installation and fixation of the guide vane, and stable operation is ensured. According to the utility model, the surface of the guide vane shaft is subjected to surfacing and heat treatment after stepped surfacing to enable the surface to b