Turbofan shaped graded drop type vertical shaft

A drop-type, vertical shaft technology, applied in the direction of drainage, sewage removal, drainage structures, etc., can solve the adverse effects on the safe and stable operation of the deep tunnel system, the unfavorable smooth transition of the water flow in the bottom regulation and storage tunnel, and the reduction of the effective flow area of ​​the discharged water flow, etc. , to achieve the effect of suppressing the influence of centrifugal force, lengthening the outflow width and high space utilization

Inactive Publication Date: 2017-07-21
HOHAI UNIV +1
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to centrifugal force, this type of inflow shaft has a common problem, that is, the downward swirling flow spirals down along the outer wall of the shaft, and the outer water surface is significantly higher than the inner water surface. If it is too large, the water flow will concentrate on the outside of the shaft. On the one hand, this will significantly reduce

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Turbofan shaped graded drop type vertical shaft
  • Turbofan shaped graded drop type vertical shaft
  • Turbofan shaped graded drop type vertical shaft

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] The structural arrangement of the turbofan-shaped step-down shaft in Example 1 is as follows figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, the graded drop cyclone shaft includes a shaft 1, an exhaust pipe 2, an inlet channel 3, a cyclone plate 4, a storage tunnel inlet 5, a water baffle 6, a ventilation hole 7 and a water cushion 8. The number of swirl plates 4 is nine. The inlet channel 3 is connected with the swirl plate 4 located on the first layer. The tail end of each layer of swirl plate 4 and the head end of the next layer of swirl plate 4 are connected on the horizontal projection plane and formed in the annular area Graded rotating water flow channel. The swirl plate 4 is a plate of equal thickness, the inner and outer bottom elevations are equal, and the outflow edge of the swirl plate 4 is a curved arc shape on the front side. The head end of the swirl plate 4 is vertically provided with a water baffle 6 whose height i...

Example Embodiment

[0035] Example 2

[0036] The structural arrangement of the turbofan-shaped stepped drop shaft in Example 2 is as follows figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 As shown, the graded drop cyclone shaft includes a shaft 1, an exhaust pipe 2, an inlet channel 3, a cyclone plate 4, a storage tunnel inlet 5, a water baffle 6, a ventilation hole 7 and a water cushion 8. The number of swirl plates 4 is nine. The inlet channel 3 is connected with the swirl plate 4 located on the first layer. The tail end of each layer of swirl plate 4 and the head end of the next layer of swirl plate 4 are connected on the horizontal projection plane and formed in the annular area Graded rotating water flow channel. The swirl plate 4 is a unequal-thickness plate with an arc-shaped upper surface, the outer bottom elevation is higher than the inner bottom elevation, and the outflow edge of the swirl plate 4 is a curved arc shape on the front side. The head end of the swirl ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a turbofan shaped graded drop type vertical shaft. The turbofan shaped graded drop type vertical shaft comprises a vertical shaft body and an exhaust pipe which are coaxially arranged, and an annular area is formed between the inner wall of the vertical shaft body and the outer wall of the exhaust pipe; the upper end of the annular area is connected to a water inlet canal, multiple vortex plates are evenly distributed on the annular area at equal intervals from the top to the bottom, and the lower end of the annular area is connected to a storage tunnel access opening; the vortex plate comprises a sector plate, the tail end of the outflow edge of the sector plate is in an arc shape, and the arc bends along water flow toward the front side; the vortex plate at the first layer is connected to the water inlet canal, the tail end of each layer of the vortex plate is connected to the head end of the next layer of the vortex plate on a horizontal projection plane, and a graded vortex type water flow channel is formed in the annular area. In the turbofan shaped graded drop type vertical shaft, by utilizing multiple grades of the vortex plates in the vertical shaft and utilizing an aerification effect of fallen water flow and a turbulent motion diffusion effect of upper water cushions of the vortex plates, the flow speed of let-down water flow is lowered, the vertical shaft energy dissipation effect is improved, and cavitation and cavitation erosion of a local area of the vertical haft can be effectively inhibited at the same time.

Description

technical field [0001] The invention relates to the technical field of drainage engineering, in particular to a scroll fan-shaped graded drop shaft. Background technique [0002] The inflow shaft in the municipal engineering storage tunnel system usually needs to adapt to the requirements of different inflow flow and water drop depth according to the pipeline layout characteristics. At the same time, due to the limitation of the ventilation holes in the municipal engineering layout, the inflow shaft usually needs to take into account the needs of system exhaust. In order to make full use of the original shield working shaft of the storage tunnel, reduce the occupied area and re-excavate, the deep tunnel system often adopts a vertical shaft structure with inflow from the circumference and ventilation and exhaust in the middle. This type of inflow Shafts are usually compact in structure, can make full use of the vertical space of the shaft, and can meet the requirements of sha...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E03F1/00E03F5/04E21F16/02
CPCE03F1/00E03F5/04E21F16/02
Inventor 王晓升陈毓陵周春天冯建刚张睿王树仿孙靖康
Owner HOHAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap