CN211312448U

CN211312448U - Jet flow combined water channel

Info

Publication number: CN211312448U
Application number: CN201921531017.4U
Authority: CN
Inventors: 董志勇; 严泽阳
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-08-21
Anticipated expiration: 2029-09-16

Abstract

A jet flow combined water channel comprises a flow channel for water, a flow inlet arranged at the upstream end of the flow channel and a flow outlet arranged at the downstream end of the flow channel, wherein a control valve is arranged on a pipeline at the flow inlet in a matched mode, and the flow outlet is provided with a flow outlet weir; a plurality of vertical rails are arranged on the inner sides of the groove walls opposite to the flow channel along the water flow direction, and the vertical rails are kept perpendicular to the water flow direction in the flow channel; the water channel of the runner is divided into an upstream, a midstream and a downstream in sequence along the water flow direction, a water retaining wall is installed at the vertical track of the midstream, the water channel of the midstream is divided into a plurality of test areas through the water retaining wall, the water retaining wall is divided into a middle-hole water retaining wall and a bottom-hole water retaining wall according to different rectangular hole distribution positions on the water retaining wall, a rectangular hole of the middle-hole water retaining wall is positioned in the center of the middle-hole water retaining wall, a rectangular hole of the bottom-hole water retaining wall is positioned at the bottom, and the middle-hole water retaining wall and the bottom-hole. The utility model has the advantages that: the device is suitable for bidirectional tide and forms a flow field required by migration of fishes at the middle and lower layers.

Description

Jet flow combined water channel

Technical Field

The utility model relates to a efflux combination formula water channel.

Background

The resources of fishes along the seas and rivers in China are rich, and migratory fishes are numerous, one class of fishes is fishes which usually live in oceans, and after sexual maturity is reached, the fishes breed by spawning in inland rivers or auxiliary lakes thereof in a group in the annual breeding season; another type is fish, which usually live in fresh water, and when sexually mature, descend into the sea to lay eggs and breed. The former is called migratory fish and the latter is called migratory fish. In addition, there are also semi-migratory fishes that migrate between rivers and lakes or between main and tributaries for the purposes of spawning, baiting, overwintering, and the like. In order to communicate the migration passage of fish and maintain the diversity of organisms, a fish passage is usually installed in the sluice. The fish passing effect of the fishway is not only related to the hydraulic characteristics of the fishway chamber, but also depends on the fish's swimming habits. Research data already shows that in fishways established around the world, the fishways through which fishes can swim back are less than half. Therefore, the design of the fishway based on the fish swimming habit has important practical significance.

Disclosure of Invention

In order to solve the problem, the utility model provides an adaptation fish trace to journey the habit, be applicable to the combined water channel of efflux of reciprocating flow.

A efflux combination formula water channel, its characterized in that: the device comprises a flow passage for water, a flow inlet arranged at the upstream end of the flow passage and a flow outlet arranged at the downstream end of the flow passage, wherein a control valve is assembled on a pipeline at the flow inlet, and the flow outlet is provided with a flow outlet weir; a plurality of vertical rails are arranged on the inner sides of the opposite groove walls of the fishway along the water flow direction, and the vertical rails are kept perpendicular to the water flow direction in the fishway; the water course of fishway divides into upper reaches, midstream and low reaches in order along the rivers direction, the vertical track department installation breakwater of midstream for the water course of midstream separates into a plurality of experimental regions through the breakwater, and the breakwater is divided into mesopore breakwater and bottom outlet breakwater two types according to the rectangular hole distribution position difference on it, and the rectangular hole of mesopore breakwater is located mesopore breakwater central authorities, and the rectangular hole of bottom outlet breakwater is located bottom outlet breakwater bottom, and mesopore breakwater and bottom outlet breakwater alternative or install on the track of cell wall in turn.

The water channel bottom plate clamped between the upstream-most water retaining wall and the downstream-most water retaining wall is a stepped bottom plate, the height of the steps of the stepped bottom plate is gradually reduced along the water flow direction, and the joint of two adjacent steps is correspondingly provided with one water retaining wall.

The water retaining wall is vertical to the water channel bottom plate.

The long edge of the rectangular hole is vertical to the water channel bottom plate corresponding to the test area, and the long edge h and the width d of the rectangular hole meet the formula (1):

h/d≥1.5(1)。

the utility model discloses a design is: fishway water flows pass through the rectangular holes, the flow state of the hole opening is submerged outflow, and the adaptability to upstream and downstream water level changes is good. The method is characterized in that the upstream habit of fishes is fully considered, two fishways of a central hole type and a bottom hole type are designed, the central hole type forms three-dimensional jet flow in a fishway pool, and the bottom hole type is three-dimensional wall jet flow. The mainstream district of orifice formula fishway is obvious, easily fish perceive, does benefit to and traces to upward. The design of the orifice type fishway is suitable for fishes loving the upstream of the middle and lower layers, protects the normal migration of the fishes, and promotes the harmonious development of hydraulic engineering and ecological environment.

The utility model has the advantages that: simple structure, the preparation is convenient, economical and practical, and be applicable to the reciprocating flow, rivers through the rectangle bottom outlet are three-dimensional wall efflux, and rivers through the mesopore are three-dimensional efflux, and the rivers in the water course had both had three-dimensional wall efflux promptly, had three-dimensional efflux again, formed the required flow field of middle and lower floor's fish.

Drawings

Fig. 1 is a structural view of the present invention.

Fig. 2 is a bottom hole vertical partition structure diagram of the utility model.

Fig. 3 is a structure view of the middle hole vertical partition plate of the utility model.

Fig. 4 is a structural view of the rectangular fish-passing hole of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

With reference to the accompanying drawings:

embodiment 1 the utility model discloses a jet combined water channel, including runner 1 that is used for leading to water, set up the influent stream mouth 11 at the runner upstream end and set up the outfall 12 at the runner downstream end, the pipeline of influent stream mouth 11 department is furnished with control valve 111, outfall 12 is equipped with effluent weir 12; a plurality of vertical rails are arranged on the inner sides of the groove walls opposite to the flow channel along the water flow direction, and the vertical rails are kept perpendicular to the water flow direction in the flow channel; the water channel of the runner is sequentially divided into an upstream 13, a midstream 14 and a downstream 15 along the water flow direction, a water retaining wall 2 is installed at the vertical track of the midstream, so that the water channel of the midstream is divided into a plurality of test areas through the water retaining wall, the water retaining wall is divided into a middle-hole water retaining wall and a bottom-hole water retaining wall according to the different distribution positions of rectangular holes 141 on the water retaining wall, a rectangular hole of the middle-hole water retaining wall is positioned in the center of the middle-hole water retaining wall, a rectangular hole of the bottom-hole water retaining wall is positioned at the bottom of the bottom-hole water retaining wall, and the middle-hole water retaining wall and the bottom.

The water channel bottom plate clamped between the upstream-most water retaining wall and the downstream-most water retaining wall is a stepped bottom plate 16, the step height of the stepped bottom plate is gradually reduced along the water flow direction, and a water retaining wall is correspondingly assembled at the joint of two adjacent steps.

The water retaining wall is vertical to the water channel bottom plate.

The rectangular hole is used as a fish passing hole, wherein the long edge of the rectangular hole is vertical to the water channel bottom plate corresponding to the test area, and the long edge h and the width d of the rectangular hole meet the formula (1):

h/d≥1.5(1)。

the utility model discloses a design is: the runner rivers pass through in the rectangular hole, and the drill way flow state is for submerging out the flow, and is better to the adaptability that upstream and downstream water level changed. Two fishways of a middle hole type and a bottom hole type are designed by fully considering the upstream habit of the fishes. The mainstream district of orifice formula fishway is obvious, easily fish perceive, does benefit to and traces to upward. The design of the orifice type fishway is suitable for fishes loving the upstream of the middle and lower layers, protects the normal migration of the fishes, and promotes the harmonious development of hydraulic engineering and ecological environment.

Embodiment 2 a jet combined waterThe channel comprises a 20m large glass water tank, a water tank with the width of 0.6m and the height of 1m, 5 middle-hole water retaining walls which are totally designed when the middle-hole water retaining walls are tested, the center of a rectangular hole is positioned in the center of the middle-hole water retaining walls, the length of the rectangular hole is 160mm, the width of the rectangular hole is 240mm, a bottom plate is arranged between every two water retaining walls, the height of the bottom plate is 20mm, 15mm, 10mm and 5mm respectively, each water retaining wall exceeds 650mm of the bottom plate, the first water retaining wall is positioned at the water outlet position of the glass water tank for 2m, then a vertical partition plate is arranged at each 1.8m, a baffle plate with the height of 0.45mm is arranged on the rearmost side of the water tank, a test area is measured between a No. 3 plate and a No. 4 plate (along the water flow direction, the third water retaining wall is a No. 3 plate, the fourth water retaining wall is a No. 4 plate), the water level exceeds 10cm above an orifice, a turbulent area and a vortex area generated by observing the fish passage, the water passage is characterized in that the total length of the water passage height difference L is represented by the height of the H25W of the water passage, the water passage is represented by the₀；

The embodiments described in this specification are merely illustrative of implementations of the inventive concepts, and the scope of the invention should not be considered limited to the specific forms set forth in the embodiments, but rather the scope of the invention includes equivalent technical means that can be conceived by those skilled in the art based on the inventive concepts.

Claims

1. A jet flow combined water channel is characterized in that: the device comprises a flow passage for water, a flow inlet arranged at the upstream end of the flow passage and a flow outlet arranged at the downstream end of the flow passage, wherein a control valve is assembled on a pipeline at the flow inlet, and the flow outlet is provided with a flow outlet weir; a plurality of vertical rails are arranged on the inner sides of the groove walls opposite to the flow channel along the water flow direction, and the vertical rails are kept perpendicular to the water flow direction in the flow channel; the water channel of the runner is divided into an upstream, a midstream and a downstream in sequence along the water flow direction, a water retaining wall is installed at the vertical track of the midstream, so that the water channel of the midstream is divided into a plurality of test areas through the water retaining wall, the water retaining wall is divided into a middle-hole water retaining wall and a bottom-hole water retaining wall according to different rectangular hole distribution positions on the water retaining wall, a rectangular hole of the middle-hole water retaining wall is located in the center of the middle-hole water retaining wall, a rectangular hole of the bottom-hole water retaining wall is located at the bottom of the bottom-hole water retaining wall, and the middle-hole water retaining wall and the bottom.

2. A jet-combined water channel as claimed in claim 1, wherein: the water channel bottom plate clamped between the upstream-most water retaining wall and the downstream-most water retaining wall is a stepped bottom plate, the height of the steps of the stepped bottom plate is gradually reduced along the water flow direction, and the joint of two adjacent steps is correspondingly provided with one water retaining wall.

3. A jet-combined water channel as claimed in claim 2, wherein: the water retaining wall is vertical to the water channel bottom plate.

4. A jet-combined water channel as claimed in claim 3, wherein: the long edge of the rectangular hole is vertical to the water channel bottom plate corresponding to the test area, and the long edge h and the width d of the rectangular hole meet the formula (1):

h/d≥1.5 (1)。