CN220246847U - Automatic sand discharging mechanism of hydropower station - Google Patents

Abstract

The utility model relates to an automatic sand discharging mechanism of a hydropower station, which comprises a sand pumping pump, wherein a liquid inlet end of the sand pumping pump is fixedly connected with a first pipeline, a second pipeline is rotatably arranged at the liquid inlet end of the first pipeline, a first bracket is fixedly connected in the first pipeline, a second bracket is fixedly connected in the second pipeline, an impeller shaft penetrating through the first bracket is fixedly connected on the second bracket, an impeller is fixedly connected on the impeller shaft, an L-shaped connecting block is arranged on the second pipeline, and straight blade blades are fixedly connected outside the second pipeline. This automatic sediment ejection mechanism of power station utilizes the thrust of the rivers of sediment ejection pump during operation to promote the impeller rotation through setting up the sediment ejection pump that is located on the sump pit, and the impeller drives the impeller axle rotation, and the impeller axle drives the pipeline second rotation fixed with support second for install straight leaf paddle and the strip brush on pipeline second rotatory in the lump, and disturbance deposit silt is taken out together after mixing with water, simple structure, and desilting sediment ejection is effectual.

Description

Automatic sand discharging mechanism of hydropower station

Technical Field

The utility model relates to the technical field of hydroelectric engineering, in particular to an automatic sand discharging mechanism of a hydropower station.

Background

The hydraulic power station and the pumped storage power station are required to be provided with a seepage drainage system and an overhaul drainage system, and are respectively used for removing water seepage in a factory building and flow passage ponding during overhaul of a unit. The seepage drainage system and the overhaul drainage system are generally provided with water collecting wells, and the water collecting wells are used for temporary storage of water bodies during system operation. Considering that the water body has certain sand content, in the process of temporarily storing the water body in the water collecting well, sediment in the water can be deposited at the bottom of the water collecting well, and the deposited sediment is gradually increased and gradually solidified along with the time. At this time, in order to ensure the normal operation of the drainage system, the water collecting well needs to be subjected to sand removal and dredging through the submersible sewage pump.

The utility model provides a problem of automatic sediment removal system of water-collecting well is solved to automatic sediment removal system of power station that chinese patent publication No. CN202416275U proposed, this patent is supplied air to the water-collecting well inside through the low-pressure gas system of power station, make water-collecting well bottom sediment disturbance and water mixed back by the suction discharge, but its impact force that low-pressure gas system provided is little, it is difficult to blow the firm adhesion thing in water-collecting well bottom, the sediment removal effect is only limited to the local space around the exhaust hole, and the air current pipeline hole is also easily blocked by the deposit in the non-use, low-pressure gas system air feed is difficult to with the jam to dash away for the silt siltation problem of partial space can't be effectively solved, so propose an automatic sediment removal mechanism of power station to solve the problem of water-collecting well inside sediment removal.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an automatic sand discharging mechanism of a hydropower station, which has the advantages of good dredging and sand discharging effect, simple structure and the like, and solves the problems of dredging and sand discharging in a water collecting well.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an automatic sediment outflow mechanism of hydroelectric power station, includes the sand pump, the feed liquor end fixedly connected with pipeline one of sand pump, pipeline one feed liquor end rotates and is provided with pipeline two, fixedly connected with support one in the pipeline two, fixedly connected with support two in the pipeline, fixedly connected with runs through the impeller axle of support one on the support two, fixedly connected with impeller on the impeller axle, be provided with L shape connecting block on the pipeline two, the outer fixedly connected with straight blade of pipeline.

Further, an annular chute I matched with the L-shaped connecting block in size is formed in the first pipeline, and an annular chute II matched with the L-shaped connecting block in size is formed in the second pipeline.

Further, a filter screen is arranged at the liquid inlet end of the second pipeline.

Further, a strip brush is arranged on the straight blade.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

this automatic sediment ejection mechanism of power station utilizes the thrust of the rivers of sediment ejection pump during operation to promote the impeller rotation through setting up the sediment ejection pump that is located on the sump pit, and the impeller drives the impeller axle rotation, and the impeller axle drives the pipeline second rotation fixed with support second for install straight leaf paddle and the strip brush on pipeline second rotatory in the lump, and disturbance deposit silt is taken out together after mixing with water, simple structure, and desilting sediment ejection is effectual.

Drawings

FIG. 1 is a schematic cross-sectional view of the present utility model;

FIG. 2 is an enlarged partial schematic view of the present utility model at A of FIG. 1;

fig. 3 is a schematic structural view of a first bracket of the present utility model.

In the figure: 1 sand pump, 2 pipeline I, 3 pipeline II, 4 support I, 5 support II, 6 impeller shaft, 7 impeller, 8L shape connecting block, 9 straight She Jiangshe, 10 filter screen, 11 brushes, 12 annular chute I, 13 annular chute II.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The present embodiment is directed to the utility model of fine particles, particularly on the cellular level, and the terms "certain difference", "larger", "smaller", etc. are also directed to fine particles such as cytology, etc. and are not words and terms described in mechanical, daily life.

Referring to fig. 1-3, an automatic sand discharging mechanism of a hydropower station in this embodiment includes a sand pump 1 disposed on the ground of the top of a water collecting well, a liquid outlet end of the sand pump 1 is communicated with a sand discharging pipeline, sediment is discharged to tail water of a power station unit through the sand discharging pipeline, a first pipeline 2 inserted into the water collecting well is fixedly connected to a liquid inlet end of the sand pump 1, a second pipeline 3 of the same type as the first pipeline 2 is rotatably connected to a liquid inlet end of the first pipeline 2, a distance between the second pipeline 3 and the bottom of the water collecting well is not greater than two centimeters, an axis of the second pipeline 3 coincides with an axis of the water collecting well, a first bracket 4 is fixedly connected to the inside of the first pipeline 2, a second bracket 5 is fixedly connected to the inside of the second pipeline 3, an L-shaped connecting block 8 which penetrates through the first bracket 4 is fixedly connected to the impeller 7 is fixedly connected to the impeller 6, a plurality of straight She Jiangshe which are not less than two L-shaped connecting blocks 8 are fixedly connected to the outside of the second pipeline 3, and a plurality of straight She Jiangshe are uniformly distributed outside the second pipeline 3.

The first bracket 4 and the second bracket 5 in the embodiment are cross-shaped, so that the influence on the flow of the discharged water flow is reduced.

It should be noted that, the first pipeline 2 is provided with the first annular chute 12 which is matched with the L-shaped connecting block 8 in size, the second annular chute 13 is a stepped annular chute, the second pipeline 3 is provided with the second annular chute 13 which is matched with the L-shaped connecting block 8 in size, the second annular chute 13 is a cylindrical annular chute, the outer diameter of the second annular chute 13, which is in contact with the first annular chute 12, is equal to the outer diameter of the first annular chute 12, the L-shaped connecting block 8 is fixedly arranged on the second annular chute 13 of the second pipeline 3 through a screw, and one end of the L-shaped connecting block 8 is clamped in the first annular chute 12, so that the first pipeline 2 is rotationally connected with the first pipeline 8 and the first pipeline 2 is ensured not to be separated from the second pipeline 3 in the rotation process.

Referring to fig. 2, in order to avoid particulate matters exceeding the particle size range of the sand pump 1 from entering the first pipeline 2 and the second pipeline 3, a filter screen 10 is magnetically installed at the liquid inlet end of the second pipeline 3 in the embodiment.

Referring to fig. 1, in order to increase the disturbance degree to the sediment at the bottom of the water collecting well, the straight blade 9 in this embodiment is provided with a strip brush 11 by screws, and the brush bristles of the strip brush 11 contact with the bottom of the water collecting well, so that the strip brush 11 scrapes sediment in the rotation process.

The sand discharging mechanism further comprises a water level sensing probe for detecting the water level of the water collecting well.

The working principle of the embodiment is as follows:

when the water level reaches the drainage requirement, the water level sensing probe sends a pumping signal to the control end, the control end starts the sand pumping pump 1 to enable accumulated water in the water collecting well to be pumped and discharged by the sand pumping pump 1 along the pipeline II 3 and the pipeline I2, and the impeller 7 can be pushed to rotate in the process that water flows through the pipeline I2, and then the impeller shaft 6 fixedly connected with the impeller 7 is driven to rotate, so that the pipeline II 3 fixedly connected with the bracket II 5 rotates, and then the straight blade paddle 9 and the strip brush 11 rotate, sediment at the bottom of the water collecting well is stirred up to be mixed with water, and then the sediment is pumped out together by the sand pumping pump 1, and automatic sand discharging work is completed.

The control mode of the utility model is controlled by the controller, the control circuit of the controller can be realized by simple programming by a person skilled in the art, the supply of power also belongs to common knowledge in the art, and the utility model is mainly used for protecting the mechanical device, so the utility model does not explain the control mode and circuit connection in detail.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. An automatic sediment outflow mechanism of power station, its characterized in that: including sand pump (1), the feed liquor end fixedly connected with pipeline one (2) of sand pump (1), pipeline one (2) feed liquor end is connected with pipeline two (3) through L shape connecting block (8) rotation, fixedly connected with support one (4) in pipeline one (2), fixedly connected with support two (5) in pipeline two (3), fixedly connected with runs through impeller shaft (6) of support one (4) on the support two (5), fixedly connected with impeller (7) on impeller shaft (6), pipeline two (3) external fixedly connected with is directly She Jiangshe (9).

2. The automatic sand discharging mechanism for a hydropower station according to claim 1, wherein: an annular chute I (12) which is matched with the L-shaped connecting block (8) in size is arranged on the first pipeline (2), and an annular chute II (13) which is matched with the L-shaped connecting block (8) in size is arranged on the second pipeline (3).

3. The automatic sand discharging mechanism for a hydropower station according to claim 1, wherein: and a filter screen (10) is arranged at the liquid inlet end of the second pipeline (3).

4. The automatic sand discharging mechanism for a hydropower station according to claim 1, wherein: the straight She Jiangshe (9) is provided with a strip brush (11).