River channel protection slope on water inlet side of power station

Abstract

The invention relates to the technical field of water conservancy project protection slopes, in particular to a power station water inlet side river channel protection slope which comprises a protection slope body, strip-shaped protrusions are arranged on the protection slope body in the slope direction of the protection slope, and blades are arranged on the strip-shaped protrusions in the water flow direction. A filter screen is fixed to the side, back to the blade, of the protection slope, a flow guide channel for guiding flow to the downstream is formed in the protection slope, and a flow guide inlet is formed in the side, right opposite to the blade, of the filter screen and is close to the filter screen. According to the power station water inlet side river channel revetment, by arranging the strip-shaped protrusions, the flow speed of water flow close to the revetment is reduced, and the revetment is effectively prevented from being damaged by water flow at the position close to the downstream; by arranging the filter screen, the flow guide channel and the corresponding flow guide channel inlet, after the plants are blocked by the filter screen, the plants are sucked away and discharged to the area outside the power generation equipment under the suction of negative pressure generated by the flow guide channel when the flow guide channel drains water to the downstream, and the plants are effectively prevented from entering the power generation equipment.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy engineering slope protection, in particular to a river channel slope protection at the water inlet side of a power station. Background Art

[0002] Slope protection structure is a common structure in water conservancy projects. Different structures are set according to different needs when designing slope protection. In existing river channels, vegetation and algae and other plants generally grow on the slope protection. Some of these plants are often washed away by water flow and enter the power generation equipment with the water flow, affecting the normal operation of the power generation equipment. People have been studying how to solve this problem. Summary of the invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides a river channel slope protection on the water inlet side of a power station to solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution provided by the present invention is as follows: A river channel slope protection at the water inlet side of a power station comprises a slope protection body, wherein the slope protection body is provided with strip protrusions along the slope direction of the slope protection, and blades are provided on the strip protrusions facing the water flow direction; a filter screen is fixedly provided on the side of the slope protection facing away from the blades, a diversion channel for diverting water downstream is provided inside the slope protection, and a diversion inlet is provided on the side of the slope protection located on the side of the filter screen facing the blades, and the diversion inlet is provided close to the filter screen.

[0005] Preferably, a shielding cover is provided on the slope protection at the lower part of the diversion inlet, and the shielding cover shields the lower part of the diversion inlet. The top surface of the shielding cover is arc-shaped, and a connecting rod is provided to slide in the vertical direction. A blocking body is provided at the bottom end of the connecting rod to limit the rise of the connecting rod, and a floating plate is hinged on the connecting rod.

[0006] Preferably, a gate for controlling the opening or closing of the diversion inlet is provided on the slope protection.

[0007] Preferably, the gate is connected with a lifting device for driving the gate to rise and fall; When the gate drops to the lowest position, the diversion inlet is closed; when the gate rises to the highest position, the diversion inlet is opened.

[0008] Preferably, the lifting device is an electric hydraulic cylinder.

[0009] Preferably, the blade is fixed to the strip-shaped protrusion.

[0010] Preferably, a motor is disposed inside the strip-shaped protrusion, and the blade is fixed on the power output end of the motor.

[0011] Preferably, there are a plurality of strip-shaped protrusions, and the heights of the blades on adjacent strip-shaped protrusions are different.

[0012] The river channel slope protection at the water inlet side of the power station provided by the present invention has the following advantages: 1. By setting strip convexities, the flow rate of water near the slope protection is slowed down, effectively preventing the slope protection from being damaged by water near the downstream; 2. By setting the filter net, the diversion channel and the corresponding diversion channel entrance, after the plants are blocked by the filter net, when the diversion channel drains water downstream, the plants are sucked away by the negative pressure generated by the diversion channel and discharged to the area outside the power generation equipment, effectively preventing the plants from entering the power generation equipment; 3. By setting blades to separate the plants, it is effectively prevented that the plants are entangled into a ball, which is conducive to the plants entering the diversion channel and being drawn away. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a river channel slope protection at the water inlet side of a power station in Example 1 is shown; Figure 2 A schematic diagram of the installation structure of a shielding cover is shown; Figure 3 A schematic diagram of the installation structure of the floating board is shown; Markings in the accompanying drawings: The slope protection body 1, the strip protrusion 2, the blade 3, the filter screen 4, the diversion channel 5, the diversion inlet 5-1, the shielding cover 6, the connecting rod 7, and the floating plate 8. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] Example 1, please refer to Figure 1The present embodiment is a river channel slope protection at the water inlet side of a power station, comprising a slope protection body 1, wherein the slope protection body is provided with a strip protrusion 2 along the slope direction of the slope protection, and a blade 3 is provided on the strip protrusion facing the water flow direction, wherein the blade can be directly fixed to the strip protrusion, and the plant is cut off by the impact force of the water flow. A motor can also be provided inside the strip protrusion, and the blade is fixed on the power output end of the motor, and the plant is cut off by the motor driving the blade to rotate, so as to prevent the plants, especially algae plants, from being entangled into one. In actual production, a plurality of strip protrusions can be provided, and blades of different heights can be provided on each strip protrusion, or a plurality of blades can be provided on each strip protrusion to meet the needs of different water levels; a filter screen 4 is fixed on the side of the slope protection facing away from the blade, and a diversion channel 5 for diverting flow downstream is provided inside the slope protection, and a diversion inlet 5-1 is provided on the side of the slope protection located on the side of the filter screen facing the blade, and the diversion inlet is provided close to the filter screen.

[0016] The above-mentioned river channel slope protection on the water inlet side of the power station is built upstream close to the power generation equipment, which has the following advantages: 1. By setting strip convexities, the flow rate of water near the slope protection is slowed down, effectively preventing the slope protection from being damaged by water near the downstream; 2. By setting the filter net, the diversion channel and the corresponding diversion channel entrance, after the plants are blocked by the filter net, when the diversion channel drains water downstream, the plants are sucked away by the negative pressure generated by the diversion channel and discharged to the area outside the power generation equipment, effectively preventing the plants from entering the power generation equipment; 3. By setting blades to separate the plants, it is effectively prevented that the plants are entangled into a ball, which is conducive to the plants entering the diversion channel and being drawn away.

[0017] As an implementation method, see Figure 2 and Figure 3, a shielding cover 6 is arranged at the lower part of the diversion inlet on the slope protection, the shielding cover shields the lower part of the diversion inlet, the top surface of the shielding cover is arc-shaped, a connecting rod 7 is arranged to slide in the vertical direction, the bottom end of the connecting rod is arranged with a blocking body 7-1 to limit the rise of the connecting rod, a floating plate 8 is hinged on the connecting rod, wherein the floating plate can be made of a material with a lower density than water, so as to achieve the purpose of floating in the water, and a gate for controlling the opening or closing of the diversion inlet is arranged on the slope protection. When the plants accumulate on the filter net and sink, the floating plate has a certain lifting force at a certain depth, so that it is not easy to sink quickly. When the gate is opened, the suction force generated by the diversion inlet causes the end of the floating plate close to the upper part of the diversion inlet to tilt downward, so as to guide the plants into the diversion inlet. The gate can be set in an existing way. Generally, a lifting device for driving the gate to rise and fall can be connected to the gate. When the gate is lowered to the lowest position, the diversion inlet is closed. When the gate is raised to the highest position, the diversion inlet is opened. The lifting device is an electric hydraulic cylinder, which can be set inside or on the top of the slope protection, and can be manually controlled to open the gate to drain water once at a certain interval. It is preferably controlled by a control device such as a microcontroller or a processor. The gate can be opened intermittently during use, or by installing a pressure sensor on the floating board. When the pressure sensor detects that the top surface of the floating board is subjected to a certain pressure (plants are accumulated), the hydraulic cylinder is controlled by a processor or a microcontroller to control the gate to open. When the pressure on the top surface of the floating board is reduced to the original state, the gate is controlled to close. Of course, the setting of the pressure sensor and the connection between the pressure sensor, the processor and the microprocessor are well known to those skilled in the art and will not be repeated here.

[0018] It should be noted that when a gate is not set, the floating plate can also play a certain role in supporting the plants and guiding them into the diversion inlet, but the effect is relatively poor compared to the method of setting a gate. In the above embodiments, diversion inlets and related structures of different heights can also be set according to actual conditions. This is a selective setting that can be made by technicians in this field according to actual conditions and will not be repeated here.

[0019] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0020] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0021] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0022] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A river channel slope protection at the water inlet side of a power station, comprising a slope protection body (1), characterized in that: The slope protection body is provided with a strip-shaped protrusion (2) along the slope direction of the slope protection, and a blade (3) is provided on the strip-shaped protrusion facing the direction of the water flow; A filter screen (4) is fixedly arranged on the side of the slope protection facing away from the blade, a diversion channel (5) for diverting flow toward the downstream is arranged inside the slope protection, and a diversion inlet (5-1) is arranged on the side of the slope protection facing the blade, the diversion inlet is arranged close to the filter screen.

2. A river channel slope protection at the water inlet side of a power station according to claim 1, characterized in that: A shielding cover (6) is provided at the lower part of the diversion inlet on the slope protection, the shielding cover shields the lower part of the diversion inlet, the top surface of the shielding cover is arc-shaped, and a connecting rod (7) is slidably provided in the vertical direction, a blocking body (7-1) is provided at the bottom end of the connecting rod to limit the rise of the connecting rod, and a floating plate (8) is hinged on the connecting rod.

3. A river channel slope protection at the water inlet side of a power station according to claim 1 or 2, characterized in that: The slope protection is provided with a gate for controlling the opening or closing of the diversion inlet.

4. A river channel slope protection at the water inlet side of a power station according to claim 3, characterized in that: The gate is connected with a lifting device for driving the gate to rise and fall; When the gate drops to the lowest position, the diversion inlet is closed; When the gate rises to the highest position, the diversion inlet opens.

5. A river channel slope protection at the water inlet side of a power station according to claim 4, characterized in that: The lifting device is an electric hydraulic cylinder.

6. The river channel slope protection at the water inlet side of a power station according to claim 1, characterized in that: The blade is fixed to the strip-shaped protrusion.

7. The river channel slope protection at the water inlet side of a power station according to claim 1, characterized in that: A motor is arranged inside the strip-shaped protrusion, and the blade is fixed on the power output end of the motor.

8. The river channel slope protection at the water inlet side of a power station according to claim 1, characterized in that: There are multiple strip-shaped protrusions, and the heights of the blades on adjacent strip-shaped protrusions are different.

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