CN109723042A

CN109723042A - A drainage box culvert anti-return silt facility

Info

Publication number: CN109723042A
Application number: CN201910191535.4A
Authority: CN
Inventors: 李新; 孟帅; 刘亮亮; 朱先杰; 范荣亮; 何婷婷; 史志鹏; 马涛; 袁明国
Original assignee: Jiangsu Jianzhu Institute
Current assignee: Jiangsu Jianzhu Institute
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2019-05-07

Abstract

The invention discloses a kind of anti-facilities that back-silts of Box-shaped Drainage Culvert, including steel flap valve (2), steel closure door (3), drainage hole (5), steel plate (6), the steel plate (6) is embedded on the inner sidewall of Box-shaped Drainage Culvert (1) outlet end, the steel closure door (3) is equipped with drainage hole (5) and is fixed on steel plate (6), the steel flap valve (2) is placed on the right side of drainage hole (5) (adjacent sea side), the upper end is hinged in the closure door of the steel above drainage hole (5) (3), and it can cover drainage hole (5) and can open to the right.The present invention is relatively inexpensive, simple, efficient, solves the easy back-siltation of Box-shaped Drainage Culvert in the prior art.

Description

A kind of anti-facility that back-silts of Box-shaped Drainage Culvert

Technical field

The present invention relates to the anti-facilities that back-silts, and in particular to a kind of anti-facility that back-silts of Box-shaped Drainage Culvert.

Background technique

In the engineering construction of Binhai Generator Station, divide the stages such as civil engineering, installation, debugging, operation, civil construction is generally prior to peace Dress and debugging are completed.Under normal conditions, after the completion of Box-shaped Drainage Culvert construction, away from water flowing debugging more than half a year, interval time is longer；By In Box-shaped Drainage Culvert close to open ocean, Partial Sea Area situation of back-silting is more serious, if not taking responsible measures, will cause this interval It back-silts in phase Box-shaped Drainage Culvert siltation.On the other hand in the debugging stage, temporary drainage is carried out by box culvert, drainage procedure is discontinuous, Usually interval carries out, and drain discharge is smaller, and the operation of Box-shaped Drainage Culvert is caused to be in undersaturated condition, lacks enough, effectively It washes away, due to hydrodynamic force deficiency, the further siltation of Box-shaped Drainage Culvert will be caused, influence the operation and draining in power station.To solve back Silt problem, the measure scheme taken at present usually have two classes: first kind scheme is to seal outlet after the completion of box culvert construct It is stifled, it arranges diver that will block after entering the debugging stage under water and removes, the problem is that: due between debugging stage water flow It is disconnected, flow is smaller, and box culvert will be caused to back-silt, and meets big flow water flowing requirement before formal power generation, need to take special measures into Row dredging；Second class scheme be after the completion of box culvert construct, not to box culvert export block, the problem is that: need to carry out two Secondary dredging is cleared up and is back-silted from the box culvert that box culvert is made to before debugging, be for the second time before the small flow water flowing of debugging stage for the first time Before formal power generation big flow water flowing, cleaning box culvert as caused by being interrupted debugging stage water flow, flow is smaller, hydrodynamic force is insufficient is returned It becomes silted up.Related measure scheme has some disadvantages and deficiency, need to put into a large amount of human and material resources, expends the longer duration, not only Cost is increased, and also reduces efficiency.

Summary of the invention

In view of the shortcomings of the prior art, the present invention provides a kind of relatively inexpensive, simple, efficient Box-shaped Drainage Culvert is anti- Back-silt facility.

In order to solve the above-mentioned technical problem, realize the object of the invention, adopt the following technical scheme that: a kind of Box-shaped Drainage Culvert is prevented back Silt facility, including steel flap valve, steel closure door, drainage hole, steel plate, the steel plate are embedded on the inner sidewall of Box-shaped Drainage Culvert outlet end, The steel closure door is equipped with drainage hole and fixes on the steel plate, and the steel flap valve is placed on the right side of drainage hole, and the upper end is hinged on row In steel closure door above water hole, and it can cover drainage hole and can open to the right.

Further, the drainage hole is provided with the upper half of the steel closure door.

Further, the drainage hole is two, and the steel flap valve matched with the drainage hole is two.

Further, the steel closure door is welded or is assemblied on the steel plate by bolt, and steel flap valve upper end is logical The steel closure door crossed above steel hinge and drainage hole connects.

Further, the steel closure door is equipped with sacrificial anode block.

Further, the sacrificial anode block is four pieces, and is positioned close to the steel closure door right side at four angles of Box-shaped Drainage Culvert On face.

Further, the side brushing antifouling paint of the steel closure door and steel flap valve.

Compared with prior art, the invention has the benefit that

By the way that the steel closure door with drainage hole is arranged and is mounted on the right side of drainage hole the i.e. steel flap valve of adjacent sea side, make steel flap valve in hydraulic pressure Drainage hole can be opened and closed under the action of difference, to prevent off-lying sea mud from entering Box-shaped Drainage Culvert, avoided clear caused by back-silting Reason and human and material resources investment, save the duration；In short, the configuration of the present invention is simple, low cost, easy for construction, high-efficient, warp It helps profitable.

Detailed description of the invention

Fig. 1 is elevation of the invention；

Fig. 2 is sectional view at A-A in Fig. 1；

In figure: 1- Box-shaped Drainage Culvert, 2- steel flap valve, 3- steel closure door, 4- steel hinge, 5- drainage hole, 6- steel plate, 7- sacrificial anode block.

Specific embodiment

Invention is further explained with example with reference to the accompanying drawing.

As shown in Figure 1 and Figure 2, the present invention provides a kind of anti-facility that back-silts of Box-shaped Drainage Culvert, including steel flap valve 2, steel closure door 3, Drainage hole 5, steel plate 6, steel plate 6 are embedded on the inner sidewall of 1 outlet end of Box-shaped Drainage Culvert, and steel closure door 3 is welded or passed through bolt and fills It fits on steel plate 6, when being fixed by bolts, bolt hole can be opened up on pre-buried 6 bared end of steel plate, in order to avoid seeping water, Water proof rubber is added on steel closure door 3 and 6 contact surface of steel plate, then screwing bolts are fixed, opens up several drainage holes 5 in steel closure door 3, Drainage hole 5 is preferably disposed on the upper half of steel closure door 3, the i.e. region close to 1 top of Box-shaped Drainage Culvert, to prevent back-silting in Box-shaped Drainage Culvert 1 outlet siltation, causes flap valve to block；Steel flap valve 2 is placed in 5 right side (adjacent sea side) of drainage hole, and the upper end is hinged on 5 top of drainage hole Steel closure door 3 on, preferably the upper end is sealed up a door by the steel of 5 top of steel hinge 4 and drainage hole and 3 is connect, and can also take it certainly His articulated manner, when 2 right side (adjacent sea side) hydraulic pressure of steel flap valve is greater than left side hydraulic pressure, steel flap valve 2 covers drainage hole 5, prevents outer Extra large mud enters Box-shaped Drainage Culvert；When 2 left side hydraulic pressure of steel flap valve is greater than right side hydraulic pressure, that is, debug stage small flow temporary drainage mistake Cheng Zhong, when 1 internal water accumulation of Box-shaped Drainage Culvert reaches certain head, hydraulic pressure will push steel flap valve 2 open and flow into the sea, after draining stops, Hydraulic pressure acts on lower steel flap valve 2 and will close again, prevents off-lying sea mud from entering Box-shaped Drainage Culvert, and the preferred drainage hole 5 of the present embodiment is two, The steel flap valve 2 matched with drainage hole 5 is two.

Before preventing seawater immersion for a long time from steel closure door corrosion, steel closure door 3 and steel flap valve 2 being caused to install, interior outside is both needed to Brushing antifouling paint after installation, then is made up a deficiency with antifouling paint, and steel hinge 4 uses stainless steel material；It can be set in steel closure door 3 Several sacrificial anode blocks 7, preferably sacrificial anode block 7 are four pieces and are positioned close to 3 right side of steel closure door at 1 four angles of Box-shaped Drainage Culvert On face (adjacent sea side).

Working principle:

After the completion of Box-shaped Drainage Culvert (1) is prefabricated on the coast, the facility is installed in outlet end before underwater installation, debugs stage small flow Before water flowing, since the hydraulic pressure effect on 2 right side (adjacent sea side) of steel flap valve makes steel flap valve 2 tightly cover drainage hole 5, it is therefore prevented that prevent outer Extra large mud enters Box-shaped Drainage Culvert；During the small flow water flowing of the stage of debugging, when 1 internal water accumulation of Box-shaped Drainage Culvert reaches certain head When, when 2 left side of steel flap valve (1 inside of Box-shaped Drainage Culvert) hydraulic pressure is greater than the hydraulic pressure on 2 right side (adjacent sea side) of steel flap valve, in the effect of pressure difference Under will push steel flap valve 2 open and flow into the sea；After draining stops, steel flap valve (2) will be closed, and prevent off-lying sea mud from entering Box-shaped Drainage Culvert 1. Before formal power generation big flow water flowing, diver is arranged under water to remove steel closure door 3, to meet formal water flowing requirement.

The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art, It should be covered by the protection scope of the present invention.

Claims

1. A drainage box culvert anti-silting facility, characterized in that it comprises a steel flap door (2), a steel sealing door (3), a drainage hole (5), a steel plate (6), and the steel plate (6) is pre-buried in the On the inner side wall of the outlet end of the drainage box culvert (1), the steel sealing door (3) is provided with a drainage hole (5) and is fixed on the steel plate (6), and the steel flap door (2) is placed in the drainage hole (5). ) right side, the upper end of which is hinged on the steel sealing door (3) above the drain hole (5), and it can cover the drain hole (5) and open to the right.

2 . The drainage box culvert anti-silt backflow facility according to claim 1 , wherein the drainage hole ( 5 ) is opened in the upper half of the steel sealing door ( 3 ). 3 .

3. A drainage box and culvert back-silting prevention facility according to claim 1, characterized in that: the number of said drainage holes (5) is two, and the steel flap doors (2) matched with the said drainage holes (5) ) for two.

4. A drainage box culvert anti-silt backflow facility according to claim 1, characterized in that: the steel sealing door (3) is welded or assembled on the steel plate (6) by bolts, and the steel flap door ( 2) The upper end is connected to the steel sealing door (3) above the drain hole (5) through a steel hinge (4).

5. A drainage box culvert anti-silt backflow facility according to claim 1, characterized in that: a sacrificial anode block (7) is provided on the steel sealing door (3).

6. A drainage box culvert anti-backward silt facility according to claim 5, characterized in that: the sacrificial anode blocks (7) are four, and are arranged on the steel near the four corners of the drainage box culvert (1). On the right side of the closed door (3).

7 . A drainage box culvert anti-silt backflow facility according to any one of claims 1 to 6 , wherein the sides of the steel sealing door ( 3 ) and the steel flap door ( 2 ) are painted with anti-corrosion paint. 8 .