CN209907339U - Multistage abrupt slope energy absorber - Google Patents

Abstract

The utility model discloses a multistage abrupt slope energy dissipation device, which comprises an inlet connecting section, more than one abrupt slope, more than one anti-impact wall unit, a force dissipation pool group and an outlet connecting section; the utility model provides a problem that leads to the corruption to destroy low reaches canal system building in that the drop is big, high velocity water flow energy is concentrated leads to washing away and is destroyed low reaches canal system building, makes its smooth-going inflow, fully energy dissipation, the bank of power dissipation group is equipped with to the bottom of the slope one side of abrupt slope, and the bottom of the slope of abrupt slope is connected with the head end in the power dissipation pond of the highest point in the power dissipation group, connects through the abrupt slope between two adjacent power dissipation ponds in the power dissipation group, the domatic unsmooth convex structure that is the height and low fluctuation in succession of abrupt slope, and is equipped with more than one in the concave circular arc shape of abrupt slope respectively, the power dissipation unit includes steel pipe and more than one cylinder, more than one cylinder is installed on the steel pipe, the installation of steel pipe is in the concave circular arc shape slope of abrupt slope, the utility model provides a problem of leading.

Description

A multi-stage steep slope energy dissipation device

technical field

The utility model relates to a multi-stage steep slope energy dissipation device, which belongs to the field of flood discharge and energy dissipation in water conservancy and hydropower projects.

Background technique

A steep slope is a drop structure that makes the water flow in the upstream channel (river, ditch, reservoir, pond, drainage area) drain along the steep channel to the downstream channel (river, ditch, reservoir, pond, drainage area). It is mostly used in the concentration of channel drop, and is often connected with sluices and overflow weirs. . According to the terrain, geological conditions and the size of the drop, the steep slope can be made into grade A or multi-grade, and it is mainly built with materials such as brick, stone or concrete. According to the classification, there are two types of single-level steep slopes and multi-level steep slopes. The energy dissipation facilities of single-level steep slopes mostly use stilling pools, and sometimes auxiliary energy dissipation workers are arranged in the pools. The energy dissipation of the multi-level steep slope is the combination of the steep slope and the stilling pool, so that the energy dissipation is more sufficient. Therefore, in order to protect the stable and safe operation of the entire drainage system, a steep slope arrangement with high energy efficiency must be selected, otherwise it will cause more economic losses.

SUMMARY OF THE INVENTION

The technical problem to be solved by the utility model is to provide a multi-stage steep slope energy dissipation device. The utility model solves the problem of scouring and damaging downstream canal buildings due to the large drop and high-speed water flow energy concentration, so that the inflow is smooth and sufficient. Energy dissipation, with better practicability.

The technical scheme adopted by the utility model is: a multi-stage steep slope energy dissipation device, comprising an inlet connecting section, one or more steep slopes, one or more anti-scour wall units, a stilling pool group, and an outlet connecting section;

The inlet connecting section is connected with the top of the steep slope, and a stilling pool group is arranged on one side of the bottom of the steep slope. The stilling pool group includes more than one stilling pool, and more than one stilling pool is inclined from high to low. Arrangement, the bottom of the steep slope is connected with the head end of the highest stilling pool in the stilling pool group, the two adjacent stilling pools in the stilling pool group are connected by a steep slope, and the lowest stilling pool in the stilling pool group is connected by a steep slope. The tail end of the stilling pool is connected with the outlet connecting section through a steep slope, the slope surface of the steep slope is a continuous concave-convex circular arc structure with high and low fluctuations, and more than one anti-scour wall unit is respectively arranged in the concave circular arc shape of the steep slope. , the impact wall unit includes a steel pipe and one or more rollers, the one or more rollers are installed on the steel pipe, and the steel pipe is installed in the concave arc-shaped slope of the steep slope.

More than one impact wall unit in the concave arc shape of the steep slope is arranged at equal intervals, and one or more rollers of the impact wall unit are installed on the steel pipe at equal intervals.

The arc angle of the continuous concave-convex circular arc structure on the slope surface of the steep slope is 15-20°, that is, the continuous concave-convex circular arc structure of the steep slope surface with ups and downs should be as smooth and gradual as possible to avoid high-speed water flow. Negative Effects.

The bottom slope of the steep slope is determined by factors such as topography, geology and lining materials, and is generally larger than the critical slope, and the bottom slope is 1:3~1:10.

The roller is made of EVA resin and polyurethane composite material. This high-strength material is elastic and anti-collision and wear-resistant, which can prevent the roller from being damaged under the impact of high-speed water flow. It has biological aging resistance, high mechanical strength, good weather resistance, It has a series of advantages such as good oil resistance, and the price is moderate, which can effectively protect the steep slope section. The steel pipe is a stainless steel pipe.

The diameter of the drum is 0.3~0.5m.

The inlet connection section includes left and right connection sections, and the left and right connection sections are symmetrical with respect to the center line, the center line of the top of the steep slope corresponds to the center line of the inlet connection section, and the inlet connection section has sufficient length, guide the water flow to gradually shrink, and smoothly enter the fan-shaped steep slope.

One or more stilling pools in the group of stilling pools are arranged inclined from high to low. There are steep slopes between the lower stilling pools, the outlet of the upper stilling pool is connected to the top of the steep slope, and the bottom of the steep slope is connected to the inlet of the lower stilling pool, so as to carry out multi-stage energy dissipation.

The one or more rollers are detachably mounted on the steel pipe.

The number of rollers of the anti-wash wall unit is determined according to the width and wave pressure of the steep slope, and the size and number of the rollers are reasonably arranged, depending on the scale of the project.

The beneficial effects of the present utility model are:

(1) The energy dissipation device of the utility model has a simple structure, is easy to operate, and has strong applicability in areas with large drop and small terrain restrictions.

(2) The utility model solves the problem of scouring and destroying the downstream canal buildings due to the large drop and high-speed water flow energy concentration, so that the inflow is smooth and the energy is fully dissipated.

Description of drawings

Fig. 1 is the sectional view of the utility model multi-stage steep slope energy dissipation device;

Fig. 2 is the structural representation of the steep slope of the multi-stage steep slope energy dissipation device of the utility model;

Fig. 3 is the top view of the multi-stage steep slope energy dissipation device of the utility model;

4 is a schematic structural diagram of the drum of the multi-stage steep slope energy dissipation device of the present invention;

5 is a schematic diagram of the arc angle of the continuous concave-convex circular arc of the slope surface of the steep slope of the multi-stage steep slope energy dissipation device of the present invention;

Each label in the figure: 1-inlet connection section, 2-steep slope, 3-roller, 4-steel pipe, 5-stilling pool, 6-outlet connection section.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Embodiment 1: As shown in Figures 1 to 5, the multi-stage steep slope energy dissipation device includes an inlet connection section 1, 4 steep slopes 2, 4 anti-scour wall units, a stilling pool group, and an outlet connection section 6;

The inlet connection section 1 is connected with the top of the steep slope 2, and a stilling pool group is arranged on one side of the bottom of the steep slope 2. The low place is inclined and arranged, the bottom of the steep slope 2 is connected with the head end of the highest stilling pool 5 in the stilling pool group, and the rear end of the highest stilling pool 5 passes through the steep slope 2 and the middle stilling pool 5. The head end is connected, the rear end of the middle stilling pool 5 is connected with the head end of the lowest stilling pool 5 through the steep slope 2, and the rear end of the lowest stilling pool 5 is connected with the outlet connecting section 6 through the steep slope 2, so The slope surface of the steep slope 2 is a continuous concave-convex circular arc structure with high and low fluctuations, and a concave circular arc shape of the steep slope 2 is respectively provided with a shock wall unit, and the shock wall unit includes a steel pipe 4 and 3 rollers 3, The three rollers 3 are installed on the steel pipe 4 by means of snaps, and the rollers 3 are penetrated and fixed on the steel pipe 4 by the snaps. The snaps can fasten the rollers on both ends of the steel pipe with high quality and reliability. Under the action, the drum is damaged, and it can be disassembled and replaced. The steel pipe 4 is installed in the concave arc-shaped slope surface of the steep slope 2. The concave arc angle of the continuous concave-convex arc structure of the steep slope 2 is 18°, and the convex arc The angle is 15°, and the 3 rollers 3 of the anti-collision wall unit in the concave arc shape of the steep slope 2 are installed on the steel pipe 4 in an equidistant manner, and the bottom slope of the steep slope 2 is greater than the critical slope, and the bottom slope is 1: 3~1:10.

The rollers 3 are EVA resin and polyurethane composite material rollers, and the steel pipes 4 are stainless steel pipes.

The diameter of the drum 3 is 0.3 to 0.5 m.

Inlet connection section 1 includes left and right connection sections, and the left and right connection sections are symmetrical with respect to the center line. The center line of the slope top of steep slope 2 corresponds to the center line of inlet connection section 1, and the inlet connection section There is enough length to guide the water flow to gradually shrink and smoothly enter the fan-shaped steep slope.

The working principle of the utility model is:

When the ejected jet enters the steep slope 2 from the inlet connecting section 1, it first impacts the anti-scour wall formed by the stainless steel pipe 4 and the EVA and polyurethane composite material rollers 3 installed on the steep slope 2, which can greatly slow down the flow of water. The interaction force, and then contact the stilling pool 5, can reduce the remaining energy in front to a greater extent, the energy dissipation effect is better, and finally flow to the downstream outlet connecting section 6, this device can greatly protect the downstream river buildings from serious scour .

The utility model solves the problem of scouring and destroying downstream canal buildings due to large drop and high-speed water flow energy concentration, enabling smooth inflow and sufficient energy dissipation, and has better practicability.

Embodiment 2: The structure of this embodiment is the same as that of Embodiment 1, except that the concave arc angle of the continuous concave-convex arc structure of the steep slope 2 is 20°, the convex arc angle is 18°, and the concave arc angle of the steep slope 2 is 20°. There are 3 anti-collision wall units respectively in the shape, and the steel pipes 4 of the three anti-collision wall units are arranged in the concave circular arc shape of the steep slope 2 in an equidistant manner.

The specific embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned embodiments, and within the scope of knowledge possessed by those of ordinary skill in the art, the utility model can also be used without departing from the purpose of the present utility model. Various changes are made under the premise.

Claims (8)

1. A multi-stage steep slope energy dissipation device, characterized in that it comprises an inlet connecting section (1), one or more steep slopes (2), one or more anti-scour wall units, a stilling pool group, and an outlet connecting section (6) ; The inlet connection section (1) is connected to the top of the steep slope (2), and a stilling pool group is provided on one side of the bottom of the steep slope (2), and the stilling pool group includes more than one stilling pool (5), one The above stilling pools (5) are inclined from high to low, and the bottom of the steep slope (2) is connected to the head end of the highest stilling pool (5) in the stilling pool group. The two adjacent stilling pools (5) are connected by a steep slope (2), and the end of the stilling pool (5) at the lowest position in the group of stilling pools is connected to the outlet (6) through a steep slope (2) connection, the slope surface of the steep slope (2) is a continuous concave-convex circular arc structure with high and low fluctuations, and more than one anti-collision wall unit is respectively provided in the concave circular arc shape of the steep slope (2), and the anti-collision wall unit It comprises a steel pipe (4) and one or more rollers (3), the one or more rollers (3) are installed on the steel pipe (4), and the steel pipe (4) is installed on the concave arc-shaped slope of the steep slope (2). face. 2 . The multi-stage steep slope energy dissipating device according to claim 1 , characterized in that: more than one impact wall unit in the concave arc shape of the steep slope ( 2 ) is arranged at equal intervals, and the anti-collision wall units are arranged at equal intervals. 3 . One or more rollers (3) of the flushing unit are installed on the steel pipe (4) in an equidistant manner. 3 . The multi-stage steep slope energy dissipation device according to claim 1 , wherein the arc angle of the continuous concave-convex circular arc structure of the slope surface of the steep slope ( 2 ) is 15° to 20°. 4 . 4 . The multi-stage steep slope energy dissipation device according to claim 1 , wherein the bottom slope of the steep slope ( 2 ) is 1:3 to 1:10. 5 . 5 . The multi-stage steep slope energy dissipation device according to claim 1 , wherein the roller ( 3 ) is a roller of EVA resin and polyurethane composite material, and the steel pipe ( 4 ) is a stainless steel steel pipe. 6 . The multi-stage steep slope energy dissipation device according to claim 1 or 5, characterized in that: the diameter of the drum (3) is 0.3-0.5m. 7. The multi-stage steep slope energy dissipation device according to claim 1, characterized in that: the inlet connecting section (1) includes left and right connecting sections, and the left and right connecting sections are symmetrical about the center line, and the steep slope The centerline of the slope top of (2) corresponds to the centerline of the inlet connecting section (1). 8 . The multi-stage steep slope energy dissipation device according to claim 1 , wherein the one or more rollers ( 3 ) are detachably mounted on the steel pipe ( 4 ). 9 .

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