CN206396729U - A kind of Novel sand sediment slot type water intaking hinge Shu Shui leads wall construction - Google Patents

Abstract

The utility model is related to a kind of Novel sand sediment slot type water intaking hinge Shu Shui and leads wall construction, it includes water inlet flashboard, the multiple water inlet flashboard forms water inlet side by side, the top of multiple water inlet flashboards is fixedly linked by crossbeam, the delivery port of water inlet is provided with riffler, perpendicular position is provided with multiple scouring sluice gate piers with water inlet flashboard, have additional Shu Shui in riffler head works and positioned at the position of first scouring sluice gate pier and lead wall, the Shu Shui leads the point midway and arc sediment trapping bank composition riffler that wall extends horizontally to powerplant intakes always, the sediment trapping bank is connected with outermost water inlet flashboard, scouring sluice lock chamber is formed between the multiple scouring sluice gate pier.The flow velocity to be solved in the utility model being just to provide in a kind of effective increase scouring sluice and riffler bottom water flow flow velocity and the scheme of turbulent fluctuation.

Description

A kind of Novel sand sediment slot type water intaking hinge Shu Shui leads wall construction

Technical field

The utility model is related to the application of riffler in Hydraulic and Hydro-Power Engineering, especially improves flow-shape in riffler, And then improvement sediment transport capacity is reached, improve the husky effect of drawing of riffler.

Background technology

The water intaking sand prevention of the water inlet in power station is related to power station normally operation and actual benefit.Desilting slot type diversion The hinge form that hinge is exactly the current in a kind of typical dependence river to clear up silt.Desilting slot type draws Water hinge is the water diversion project form of a kind of common " side diversion, positive sand discharge ", due to its arrangement and simple in construction, construction Easily, the advantages of cost is relatively low and certain sand prevention ability is possessed, low head hydropower station water intaking sand prevention has been obtained extensively in China General application.Intake with undersluice pocket hinge makes the coarse grain silt in current sink using the riffler before water inlet, recycles punching Husky lock carries out sand surfing, so as to reach the purpose of water intaking sand prevention.

The improvement for riffler mainly has the following aspects at present：First, riffler and scouring sluice size are increased, is used Subduction baffle wall, guide sand sill etc. are set up in arc riffler, groove to change water flow structure, improve dustproof effect.2nd, reasonable selection Angle between intake gate and barrage building, typically makes into groove current and enters water seal stream into 30 °~60 ° angles, to weaken diversion When the circulation strength that produces.3rd, sand surfing pipe or scour gallery are set up in riffler, diversion is carried out simultaneously with sand surfing.4th, it is With reference to flood discharge requirement, dam will be choked water and be wholly or largely changed to regulating dam, upstream silt, stable main flow are washed away with profit.

For low head hydropower station, fluidised form problem in riffler can not be fully solved using above prioritization scheme, And it is not obvious enough for the husky effect of drawing of riffler, it is therefore desirable to the further structural shape optimization of further investigation riffler, A kind of more preferable riffler structure optimization scheme is proposed, for improving the fluidised form in riffler, so that the drawing for improving riffler is husky Effect, it is ensured that silt will not be significant in the operation in reservoir area siltation and then influence power station and economic benefit.

Utility model content

The reason for influence riffler draws husky effect essentially consists in two aspects：First, in scouring sluice current flow velocity, improve punching The flow velocity of current in husky lock, can be remarkably reinforced the sand surfing ability of current；2nd, the flow velocity of riffler bottom water flow and turbulent fluctuation, increase The flow velocity of riffler bottom water flow and turbulent fluctuation, can effectively drive sand grain in riffler.It is to be solved in the utility model just It is to provide flow velocity and riffler bottom water flow flow velocity and the scheme of turbulent fluctuation in a kind of effective increase scouring sluice.

In order to solve the above-mentioned technical problem, the utility model proposes following technical scheme：A kind of Novel sand sediment slot type water intaking Hinge Shu Shui leads wall construction, and it includes water inlet flashboard, and the multiple water inlet flashboard forms water inlet side by side, multiple water inlet flashboards Top is fixedly linked by crossbeam, and the delivery port of water inlet is provided with riffler, and perpendicular position is set with water inlet flashboard There are multiple scouring sluice gate piers, have additional Shu Shui in riffler head works and positioned at the position of first scouring sluice gate pier and lead wall, it is described Shu Shui, which leads wall and extends horizontally to the point midways of powerplant intakes and arc sediment trapping bank always, constitutes riffler, the sediment trapping bank with Outermost water inlet flashboard is connected, and scouring sluice lock chamber is formed between the multiple scouring sluice gate pier.

The height that the Shu Shui leads wall is determined according to flow condition, less than minimum depth of water 0.5m in scouring sluice.

The Shu Shui leads that the wall both sides gradient is consistent with scouring sluice gate pier, and it is semicircle that Shu Shui, which leads the upstream face of wall, a diameter of Shu Shui leads the width of wall.

The utility model leads wall by setting up Shu Shui in riffler, and the lifting for obtaining the sand prevention ability of riffler is main Be embodied in it is following some：

Although the 1, the height that Shu Shui leads wall can block silt in scouring sluice lock chamber, prevent mud less than the water surface Sand enters powerplant intakes；

2nd, it is semicircle that Shu Shui, which leads the upstream face of wall, makes the water stream into powerplant intakes, makes current in scouring sluice More concentrate, improve flow rate of water flow；

3rd, Shu Shui, which leads the length of wall, makes part current only could enter powerplant intakes after Shu Shui leads wall crossing, and makes Current show spiral properties of flow in riffler and travelled forward, and improve the turbulent fluctuation of current, obtain the sediment carrying capacity of current It is obviously improved.

So, in riffler set up Shu Shui before scouring sluice gate pier and lead wall, to improving flow velocity and riffler in scouring sluice Interior bottom velocity and turbulent fluctuation effect are obvious, can improve the husky ability of drawing of riffler.

Brief description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is that Shu Shui of the present utility model leads wall construction design drawing.

Fig. 2 is that the utility model Shu Shui leads effect contrast figure before and after wall sand surfing.

Fig. 3 is that the utility model improvement Shu Shui leads inlet channel flow-shape figure after wall construction form.

In figure：Shu Shui leads wall 1, riffler 2, sediment trapping bank 3, water inlet 4, scouring sluice gate pier 5, husky lock lock chamber 6, water inlet flashboard 7th, crossbeam 8.

Embodiment

Embodiment of the present utility model is described further below in conjunction with the accompanying drawings.

Such as Fig. 1, a kind of Novel sand sediment slot type water intaking hinge Shu Shui leads wall construction, and it includes water inlet flashboard 7, it is the multiple enter Water board 7 forms water inlet 4 side by side, and the top of multiple water inlet flashboards 7 is fixedly linked by crossbeam 8, in the delivery port of water inlet 4 Riffler 2 is provided with, the perpendicular position of water inlet flashboard 7 is provided with multiple scouring sluice gate piers 5, in riffler head works and is located at The position of first scouring sluice gate pier 5 has additional Shu Shui and leads wall 1, and the Shu Shui leads wall 1 and extends horizontally to powerplant intakes always Point midway and arc sediment trapping bank 3 constitute riffler 2, the sediment trapping bank 3 is connected with outermost flashboard 7 of intaking, described many Scouring sluice lock chamber 6 is formed between individual scouring sluice gate pier 5.

Further, the Shu Shui leads the height of wall 1 and determined according to flow condition, less than the minimum depth of water in scouring sluice 0.5m。

Further, the Shu Shui leads the both sides gradient of wall 1 and scouring sluice gate pier 5 is consistent, and it is half that Shu Shui, which leads the upstream face of wall 1, Circle, a diameter of Shu Shui leads the width of wall 1.

Such as Fig. 2, it is that Shu Shui leads effect contrast figure before and after wall sand surfing in process of the test, is led wherein figure a is Shu Shui before wall sand surfing Photo, figure b is that Shu Shui leads photo after wall sand surfing, it is evident that after leading wall by setting up Shu Shui, make the silt in scouring sluice can not Cross Shu Shui and lead wall and enter powerplant intakes, while increasing flow rate of water flow in scouring sluice.And the current that Shu Shui is led outside wall are turned over More Shu Shui is led after wall, is showed spiral properties of flow and is travelled forward, and exactly this strong spiral flow will be deposited on desilting The desilting of trench bottom is taken away, and improves the sediment carrying capacity of current in riffler.

Such as Fig. 3, to improve inlet channel flow-shape figure after beam waterwall structure type.Shu Shui leads wall as seen in Figure 3 Outer current are crossed Shu Shui and led after wall, show spiral properties of flow and travel forward, and exactly this strong spiral flow will The desilting for being deposited on desilting trench bottom is taken away, and improves the sediment carrying capacity of current in riffler.

Utility model works process and operation principle：

Shu Shui is set up on scouring sluice gate pier lead wall and can be applied to intake with undersluice pocket hinge, for low head hydropower station stream The inadequate engineering of speed, leads wall by setting up Shu Shui and optimizes desilting slot structure this method and more can effectively improve riffler and draw Husky ability.

The Shu Shui set up leads wall paper and is placed in riffler head works, scouring sluice close to first gate pier front end of water inlet, and Shu Shui is led The height of wall is determined according to flow condition, it is desirable to less than minimum depth of water 0.5m in scouring sluice.Shu Shui leads wall length, and level is prolonged always The point midway of powerplant intakes is extended, riffler is constituted with arc sediment trapping bank.Shu Shui leads the wall both sides gradient and scouring sluice gate pier Unanimously, it is semicircle that Shu Shui, which leads the upstream face of wall, and a diameter of Shu Shui leads the width of wall.The beam water effect ten that Shu Shui leads wall is clearly demarcated It is aobvious, set up after Shu Shui leads wall, the silt in scouring sluice can not be crossed Shu Shui and is led wall and enter powerplant intakes, increase simultaneously Flow rate of water flow in scouring sluice.And the current led outside wall of Shu Shui are crossed Shu Shui and led after wall, show spiral properties of flow and travel forward, And exactly this strong spiral flow takes away the desilting for being deposited on desilting trench bottom, holding under the arm for current in riffler is improved Husky ability.

By above-mentioned description, those skilled in the art completely can be without departing from this utility model technological thought In the range of, various changes and amendments are carried out all within protection domain of the present utility model.It is of the present utility model not most Matters, belong to the common knowledge of those skilled in the art.

Claims (3)

1. a kind of Novel sand sediment slot type water intaking hinge Shu Shui leads wall construction, it is characterised in that：It includes water inlet flashboard（7）, it is described Multiple water inlet flashboards（7）Water inlet is formed side by side（4）, multiple water inlet flashboards（7）Top pass through crossbeam（8）It is fixedly linked, Water inlet（4）Delivery port be provided with riffler（2）, with water inlet flashboard（7）Perpendicular position is provided with multiple scouring sluice locks Pier（5）, in riffler head works and positioned at first scouring sluice gate pier（5）Position have additional Shu Shui and lead wall（1）, the Shu Shui leads Wall（1）The point midway and arc sediment trapping bank of powerplant intakes are extended horizontally to always（3）Constitute riffler（2）, the sediment trapping Bank（3）With outermost water inlet flashboard（7）It is connected, the multiple scouring sluice gate pier（5）Between formed scouring sluice lock chamber（6）.

2. a kind of Novel sand sediment slot type water intaking hinge Shu Shui according to claim 1 leads wall construction, it is characterised in that：It is described Shu Shui leads wall（1）Height determined according to flow condition, less than minimum depth of water 0.5m in scouring sluice.

3. a kind of Novel sand sediment slot type water intaking hinge Shu Shui according to claim 1 leads wall construction, it is characterised in that：It is described Shu Shui leads wall（1）The both sides gradient and scouring sluice gate pier（5）Unanimously, Shu Shui leads wall（1）Upstream face for semicircle, a diameter of Shu Shui Lead wall（1）Width.