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A centrifugal water pump with online adjustable blades

A centrifugal pump and blade technology, applied in the field of blade online adjustable centrifugal pump, can solve problems such as changing the operating parameters of the centrifugal pump, and achieve the effect of low energy consumption and energy saving

Active Publication Date: 2015-08-19
长沙山水节能研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the structural characteristics of centrifugal pumps, the current pump industry at home and abroad has never had a technology to change the operating parameters of centrifugal pumps by adjusting the angle of the blades.

Method used

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  • A centrifugal water pump with online adjustable blades
  • A centrifugal water pump with online adjustable blades
  • A centrifugal water pump with online adjustable blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] See figure 1 , figure 2 , the blade online adjustable centrifugal water pump, including the impeller set in the pump body through the rotating shaft 1, the impeller includes the hub 3 fixed on the rotating shaft 1 through the key 13, the cover plate 2 and several blades arranged on the hub 3; each blade Divided into two parts, including the fixed blade 4 on the hub 3 and the movable blade 6 close to the outlet of the outer edge of the impeller. The movable blade 6 is hinged on the cover plate 2 through the hinge 5; The lifting device is matched with the movable vanes 6 respectively; the cylinder jacking device includes an oil cylinder 12 radially arranged in the rotating shaft 1, a piston 11 and a push rod 7 with a sealing ring 14, and the piston 11 is connected with the piston 1 by a spring 8. The ejector rod 7 in the guide groove on the hub 3 is connected, the ejector rod 7 is matched with the bottom of the movable blade 6, and the spring 8 can ensure that the eject...

Embodiment 2

[0035] See Figure 4 , Figure 5 , the online adjustable blade centrifugal water pump of the present invention includes an impeller arranged in the pump body through a rotating shaft 1, and the impeller includes a hub 3 fixed on the rotating shaft 1 through a key 13, a cover plate 2 arranged on the hub 3 and several blades; Each blade is divided into two parts, including the fixed blade 4 on the hub 3 and the elastic blade 18 that is located on the fixed blade 4 and is close to the outlet of the outer edge of the impeller; Pipeline 10, the shaft 1 is provided with an axial main pipe 15 from one end to communicate with the branch pipe 10; the elastic blades 18 are respectively connected with steel wire ropes 19 through the corresponding branch pipe 10 on the shaft 1 and the main pipe 15 and the shaft 1 outer rope tensioning device 20 is connected, and rope tensioning device 20 can adopt conventional ratchet capstan device.

[0036] In this embodiment, the rope tensioning devi...

Embodiment 3

[0038] See Figure 6 , Figure 7 , the blade online adjustable centrifugal water pump of the present invention comprises the impeller arranged in the pump body through the rotating shaft 1, and the impeller includes a hub 3, a cover plate 2 arranged on the hub 3 and several blades; each blade is divided into two parts, including the hub 3 on the fixed blade 4 and the elastic blade 18 that is located on the fixed blade 4 and is close to the outlet of the outer edge of the impeller; the rotating shaft 1 is provided with a rotating disc 22 that can rotate around the rotating shaft 1, and the rotating disc 22 (see Figure 8 , 9) includes a hollow disc body, the two side plates 223 of the disc body are sealed with the rotating shaft 1, a partition 221 sealed with the rotating shaft 1 is arranged in the disc body, a radial baffle plate 21 is arranged on the rotating shaft 1 in the disc body, and the rotating disc A closed hydraulic space 222 is formed in the radial direction betwe...

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Abstract

The invention discloses a centrifugal water pump with on-line adjustable vanes. The centrifugal water pump comprises a vane wheel arranged in a pump body by a rotation shaft, wherein the vane wheel comprises a hub, a cover plate and a plurality of vanes arranged on the hub, each vane is divided into two parts, namely a fixed vane on the hub and a moving vane near a peripheral outlet of the vane wheel, each moving vane is hinged on the cover plate, a plurality of radial oil cylinder jacking devices respectively matched with the moving vanes are arranged on the rotation shaft, one end of the rotation shaft is provided with a pipeline and is communicated with the oil cylinder jacking devices, and the pipeline is communicated with an externally hydraulic system through a rotary joint by the end. The centrifugal water pump disclosed by the invention has the characteristics that by adjusting the outlet angle of each vane of the centrifugal pump in an on-line manner, the diameter of the vane wheel can be changed, and thus performance parameters of the water pump are changed, the flux and the head of delivery are improved or reduced, and the problem that the vane angle of the existing centrifugal pump can not be adjusted so as to change operating parameters is solved.

Description

technical field [0001] The invention belongs to water pumps, in particular to a centrifugal water pump with online adjustable blades. Background technique [0002] With the change of ambient temperature or production load, the circulating water system of industrial and mining enterprises often needs to change the flow and pressure required for production. Technical experts have been developing a certain technology, hoping to meet this requirement. [0003] The parameter adjustment during the operation of the centrifugal water pump has always been a key issue in the operation of the pump. In the past, valve adjustment and motor speed regulation (including reducer adjustment, coupler speed regulation, viscous coupling speed regulation, motor magnetic pole logarithm speed regulation, motor step-down speed regulation, motor internal feed speed regulation, etc.) were used respectively. method, but the energy consumption of the valve adjustment method in the above method is too l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/22F04D29/24
Inventor 张智勇
Owner 长沙山水节能研究院有限公司
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