CN220395879U

CN220395879U - Novel water turbine impeller

Info

Publication number: CN220395879U
Application number: CN202322079338.8U
Authority: CN
Inventors: 吴榅铭
Original assignee: Zhenghe Xiawenyang Hydropower Co ltd
Current assignee: Zhenghe Xiawenyang Hydropower Co ltd
Priority date: 2023-08-03
Filing date: 2023-08-03
Publication date: 2024-01-26
Anticipated expiration: 2033-08-03

Abstract

The utility model provides a novel impeller of a water turbine, which comprises a lower ring, wherein the lower ring is connected with a water discharge cone through a first blade, a second blade is arranged on the lower ring, and the second blade is arranged in front of the first blade; the utility model can reduce the pressure of the top cover, improve cavitation performance and reduce vibration during operation of the unit.

Description

Novel water turbine impeller

Technical Field

The utility model relates to the technical field of water turbines, in particular to a novel water turbine impeller.

Background

In the running of the rotating wheel of the water turbine in the prior art, serious cavitation is generated on the rotating wheel under the combined action of water flow and air, the service life of the rotating wheel is shortened, the maintenance cost of the rotating wheel is increased, the overhaul workload is increased, the overhaul period is shortened, and the utilization efficiency of a unit cannot be maximized.

Disclosure of Invention

In view of the above, the present utility model aims to provide a novel turbine impeller capable of reducing the pressure of a top cover, improving cavitation performance, and reducing vibration during operation of a turbine unit.

The utility model is realized by the following steps: the utility model provides a novel hydraulic turbine impeller, includes down the ring, down the intra-annular through first blade and a water discharge awl connection setting, be provided with the second blade on the ring down, just the second blade set up in the place ahead of first blade.

Furthermore, the first blades are arranged on the peripheral side surface of the water discharge cone in a ring-shaped array with the center of the water discharge cone as the center, and the tail ends of the first blades are connected with the inner side wall of the lower ring.

Further, the second blades are arranged on the side wall of the periphery of the water discharge cone in a ring-shaped array with the center of the water discharge cone as the center.

Further, the length of the second blade is greater than that of the first blade, and the tail end face of the second blade and the outer side face of the lower ring are in the same plane.

The utility model has the beneficial effects that: the utility model reserves the size of the runner of the raw water turbine, calculates and adjusts the angle of the blades, enlarges the pressure reducing hole by the action of the first blade and the second blade, adopts the long water discharging cone, can improve the output power of the turbine, reduces the pressure of the top cover, obviously improves the cavitation performance, reduces the vibration when the turbine runs, prolongs the service life of the runner of the turbine, and ensures that the turbine runs more stably.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a front view of the present utility model.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, the present utility model provides an embodiment: the utility model provides a novel hydraulic turbine impeller, includes down ring 1, down set up through first blade 2 and a water drainage awl 3 connection in the ring 1, be provided with second blade 4 on the ring 1 down, just second blade 4 set up in the place ahead of first blade 2. The size of the runner of the raw water turbine is reserved, the blade angle is calculated and adjusted, the impeller is technically changed into large and small blades, the pressure reducing hole is enlarged, a long water discharging cone is adopted, high-quality materials are adopted, the materials are coated and protected, after the runner is technically improved, the output power of the turbine can be improved, the top cover pressure is reduced, the cavitation performance is obviously improved, the vibration of the turbine during the operation is reduced, the service life of the turbine runner is prolonged, and the turbine is more stable in operation.

Referring to fig. 1 and 2, in an embodiment of the present utility model, the first blades 2 are annularly arranged on the peripheral side surface of the water discharge cone 3 with the center of the water discharge cone 3 as the center, and the ends of the first blades 2 are connected with the inner side wall of the lower ring 1.

With continued reference to fig. 1 and fig. 2, in an embodiment of the present utility model, the second blades 4 are annularly arranged on the peripheral sidewall of the water discharge cone 3 with the center of the water discharge cone 3 as the center.

With continued reference to fig. 1 and 2, in an embodiment of the present utility model, the length of the second blade 4 is greater than that of the first blade 2, and the end surface of the second blade 4 is in the same plane with the outer side surface of the lower ring 1. The pressure reducing holes are enlarged through the actions of the first blades 2 and the second blades 4, so that the output power of the water turbine can be improved, and the pressure of the top cover is reduced.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A novel turbine wheel, characterized in that: the water drainage device comprises a lower ring, wherein the lower ring is connected with a water drainage cone through a first blade, a second blade is arranged on the lower ring, and the second blade is arranged in front of the first blade.

2. A novel turbine wheel according to claim 1, wherein: the first blades are arranged on the peripheral side surface of the water discharge cone in a ring-shaped array with the center of the water discharge cone as the center, and the tail ends of the first blades are connected with the inner side wall of the lower ring.

3. A novel turbine wheel according to claim 1, wherein: the second blades are arranged on the peripheral side wall of the water drainage cone in an annular array taking the center of the water drainage cone as the center.

4. A novel turbine wheel according to claim 1, wherein: the length of the second blade is greater than that of the first blade, and the tail end face of the second blade and the outer side face of the lower ring are in the same plane.