Sediment cleaning system and method for water inlet of hydropower station

Abstract

The invention provides a system and method for cleaning deposits at a water inlet of a hydropower station, and the system comprises hoisting equipment of which the hoisting end is arranged close to the water inlet of the hydropower station; the grabbing end of the grabbing device is arranged at the hoisting end of the hoisting equipment, and the grabbing device is used for grabbing a sediment floor at the water inlet of the hydropower station so as to crush sediments; the flushing end of the dispersing device is arranged at the hoisting end of the hoisting equipment, and the dispersing device is used for dispersing the crushed deposits so as to refine the deposits; and the negative pressure end of the negative pressure device is arranged at the hoisting end of the hoisting equipment, and the negative pressure device is used for sucking the refined deposits. According to the sediment cleaning system and method for the water inlet of the hydropower station, the sediment floor at the water inlet of the hydropower station can be cleaned, the cleaning efficiency is high, the cleaning effect is good, and therefore the problem that the water inlet of the hydropower station is jammed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of silt cleaning, and in particular to a silt cleaning system and method for a water inlet of a hydropower station. Background Art

[0002] The water inlet of a hydropower station is an important water intake structure among hydraulic structures, and plays a vital role in the power generation of the hydropower station units, especially when the water demand increases sharply when the units are running at high load. Once the water intake is insufficient, the units will be forced to shut down. At the same time, since the water inlet is the source of water for the units, water flowing through the water inlet will generate a large suction force, causing floating objects in the upstream river (such as sunken wood, stones, sediment, and silt) to gather at the water inlet, causing the water inlet to be blocked and the water intake to decrease. Although a large number of hydropower stations have installed floating interception devices on the water surface and have cleaned up floating objects on the water surface, and the underwater water inlet trash racks will intercept a large amount of underwater silt, during the flood season, the upstream floating objects increase sharply, and the underwater silt accumulates over the years, which will lead to insufficient water for the unit to generate electricity. Therefore, it is necessary to regularly inspect and clean up the underwater silt at the water inlet of the hydropower station.

[0003] However, after years of sedimentation, the silt will gradually solidify at the bottom, forming a solid silt floor. Conventional cleaning methods are not only inefficient, but also have poor results, making it difficult to meet the power generation needs of the hydropower station. Summary of the invention

[0004] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, the object of the present disclosure is to provide a system and method for cleaning silt at a water inlet of a hydropower station.

[0006] To achieve the above-mentioned purpose, the first aspect of the present disclosure provides a silt cleaning system for the water inlet of a hydropower station, comprising: a lifting device, wherein the lifting end of the lifting device is arranged close to the water inlet of the hydropower station; a grabbing device, wherein the grabbing end of the grabbing device is arranged at the lifting end of the lifting device, and the grabbing device is used to grab the silt floor of the water inlet of the hydropower station to break up the silt; a dispersing device, wherein the flushing end of the dispersing device is arranged at the lifting end of the lifting device, and the dispersing device is used to disperse the broken silt to refine the silt; a negative pressure device, wherein the negative pressure end of the negative pressure device is arranged at the lifting end of the lifting device, and the negative pressure device is used to suck up the refined silt.

[0007] Optionally, the lifting equipment includes: a crane, the hook of the crane is arranged near the water inlet of the hydropower station, and the grabbing end of the grabbing device, the flushing end of the flushing device and the negative pressure end of the negative pressure device are respectively arranged on the hook of the crane.

[0008] Optionally, the grabbing device includes: a grabbing frame, which is arranged at the lifting end of the lifting equipment, and the flushing end of the flushing device and the negative pressure end of the negative pressure device are respectively arranged on the grabbing frame; a plurality of grabbing buckets, which are movably arranged on the grabbing frame, and the plurality of grabbing buckets are distributed at intervals along the circumference of the grabbing frame; a hydraulic cylinder, which is arranged on the grabbing frame, and the piston rod ends of the hydraulic cylinder are respectively connected to the plurality of grabbing buckets for transmission, and the hydraulic cylinder is used to drive the plurality of grabbing buckets to close or open.

[0009] Optionally, the grabbing device further includes: a steel wire rope, the steel wire rope is arranged at the lifting end of the lifting equipment, and the grabbing frame is arranged at an end of the steel wire rope away from the lifting end of the lifting equipment.

[0010] Optionally, the flushing device includes: a water pump; a flushing pipe, the water inlet end of the flushing pipe is connected to the water outlet end of the water pump, and the water outlet end of the flushing pipe is arranged at the lifting end of the lifting equipment.

[0011] Optionally, the flushing device further comprises: a flushing head, wherein the flushing head is arranged at the hoisting end of the hoisting device, and the water outlet end of the flushing pipe and the water inlet end of the flushing head are detachably connected.

[0012] Optionally, the negative pressure device includes: an air compressor; a positive pressure pipe, the air inlet end of the positive pressure pipe is connected to the air outlet end of the air compressor, and the air outlet end of the positive pressure pipe is connected to a silt storage device; a negative pressure pipe, the air inlet end of the negative pressure pipe is arranged at the hoisting end of the hoisting equipment, and the air outlet end of the negative pressure pipe is connected to the negative pressure end of the positive pressure pipe, wherein the negative pressure end of the positive pressure pipe is located between the air inlet end and the air outlet end.

[0013] Optionally, the negative pressure device also includes: a silt discharge joint, which is arranged at the lifting end of the lifting equipment, and the air outlet end of the negative pressure pipe is connected to the air inlet end of the silt discharge joint, and the negative pressure end of the positive pressure pipe and the air outlet end of the silt discharge joint are detachably connected.

[0014] A second aspect of the present disclosure provides a method for cleaning silt at a water inlet of a hydropower station. The method is based on a silt cleaning system for a water inlet of a hydropower station as provided in the first aspect of the present disclosure, and the method comprises: placing a hoisting end of a hoisting device close to the water inlet of the hydropower station; using a grabbing device to grab the silt floor of the water inlet of the hydropower station to break up the silt; using a dispersing device to disperse the broken silt to refine the silt; and using a negative pressure device to suck up the refined silt.

[0015] Optionally, the method further includes: using the grabbing device to grab the silt on the upper layer of the water inlet of the hydropower station; using the grabbing device to grab the silt floor on the lower layer of the water inlet of the hydropower station.

[0016] The technical solution provided by the present disclosure may have the following beneficial effects:

[0017] Since the hoisting end of the hoisting equipment is arranged close to the water inlet of the hydropower station, and the gripping end of the grabbing device, the flushing end of the dispersing device and the flushing end of the dispersing device are respectively arranged at the hoisting end of the hoisting device, the gripping end of the grabbing device can be arranged at the water inlet of the hydropower station by the hoisting equipment and grab the silt floor of the water inlet of the hydropower station to break up the silt, and the flushing end of the dispersing device can be arranged at the water inlet of the hydropower station by the hoisting equipment and disperse the broken silt to refine the silt, and the negative pressure end of the negative pressure device can be arranged at the water inlet of the hydropower station by the hoisting equipment and suck up the refined silt. Thus, through the sequential gripping, dispersing and suction operations of the grabbing device, the dispersing device and the negative pressure device, the silt floor at the water inlet of the hydropower station can be cleaned, and it has a high cleaning efficiency and a good cleaning effect, thereby reducing the congestion problem of the water inlet of the hydropower station, and further meeting the stable and efficient power generation needs of the hydropower station.

[0018] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 It is a structural schematic diagram of a silt cleaning system for a water inlet of a hydropower station proposed in one embodiment of the present disclosure;

[0021] Figure 2 It is a schematic flow chart of a method for cleaning silt at a water inlet of a hydropower station proposed in one embodiment of the present disclosure;

[0022] As shown in the figure: 1. Hoisting equipment;

[0023] 2. Grabbing device, 21. Grab bucket, 22. Hydraulic cylinder, 23. Steel wire rope;

[0024] 3. Flushing device, 31. water pump, 32. flushing pipe;

[0025] 4. Negative pressure device, 41. Air compressor, 42. Positive pressure pipe. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0027] like Figure 1 As shown, the disclosed embodiment proposes a silt cleaning system for the water inlet of a hydropower station, comprising: a hoisting device 1, a grabbing device 2, a dispersing device 3 and a negative pressure device 4, the hoisting end of the hoisting device 1 is arranged close to the water inlet of the hydropower station, the grabbing end of the grabbing device 2 is arranged at the hoisting end of the hoisting device 1, and the grabbing device 2 is used to grab the silt floor of the water inlet of the hydropower station to break up the silt, the flushing end of the dispersing device 3 is arranged at the hoisting end of the hoisting device 1, and the dispersing device 3 is used to disperse the broken silt to refine the silt, the negative pressure end of the negative pressure device 4 is arranged at the hoisting end of the hoisting device 1, and the negative pressure device 4 is used to suck up the refined silt.

[0028] It can be understood that since the lifting end of the lifting equipment 1 is arranged close to the water inlet of the hydropower station, and the grabbing end of the grabbing device 2, the flushing end of the flushing device 3 and the flushing end of the disperser 3 are respectively arranged at the lifting end of the lifting equipment 1, the grabbing end of the grabbing device 2 can be arranged at the water inlet of the hydropower station using the lifting equipment 1 and grab the silt floor of the water inlet of the hydropower station to break up the silt, and the flushing end of the disperser 3 can be arranged at the water inlet of the hydropower station using the lifting equipment 1 and disperse the broken silt to refine the silt, and the negative pressure end of the negative pressure device 4 can be arranged at the water inlet of the hydropower station using the lifting equipment 1 and suck out the refined silt.

[0029] Therefore, through the sequential grabbing operation, flushing operation and suction operation of the grabbing device 2, the dispersing device 3 and the negative pressure device 4, the silt floor at the water inlet of the hydropower station can be cleaned with high cleaning efficiency and good cleaning effect, thereby reducing the congestion problem at the water inlet of the hydropower station and further meeting the stable and efficient power generation needs of the hydropower station.

[0030] It should be noted that the lifting equipment 1 is used to lift the grabbing end of the grabbing device 2, the flushing end of the dispersing device 3 and the flushing end of the dispersing device 3, so as to realize the positioning and movement of the grabbing end of the grabbing device 2, the flushing end of the dispersing device 3 and the flushing end of the dispersing device 3 at the water inlet of the hydropower station. The specific type of the lifting equipment 1 can be set according to actual needs and there is no limitation on this.

[0031] The grabbing device 2 is used to grab the silt floor of the water inlet of the hydropower station by grabbing action to break up the silt. The specific type of the grabbing device 2 can be set according to actual needs and is not limited to this.

[0032] The dispersing device 3 is used to disperse the broken sediment by flushing action to refine the sediment. The specific type of the dispersing device 3 can be set according to actual needs and is not limited to this.

[0033] The negative pressure device 4 is used to utilize negative pressure to suck out the refined sediment. The specific type of the negative pressure device 4 can be set according to actual needs and is not limited thereto.

[0034] The silt floor is a solid floor formed by the gradual solidification of silt at the bottom after years of sedimentation. The main body of the silt is silt.

[0035] In some embodiments, the lifting equipment 1 includes: a crane, the hook of the crane is arranged near the water inlet of the hydropower station, and the grabbing end of the grabbing device 2, the flushing end of the flushing device 3 and the negative pressure end of the negative pressure device 4 are respectively arranged on the hook of the crane.

[0036] It can be understood that since the hook of the crane is arranged close to the water inlet of the hydropower station, and the grabbing end of the grabbing device 2, the flushing end of the dispersing device 3 and the negative pressure end of the negative pressure device 4 are respectively arranged on the hook of the crane, the grabbing end of the grabbing device 2 can be arranged at the water inlet of the hydropower station by using the crane and grab the silt floor of the water inlet of the hydropower station to break up the silt, and the flushing end of the dispersing device 3 can be arranged at the water inlet of the hydropower station by using the crane and disperse the broken silt to refine the silt, and the negative pressure end of the negative pressure device 4 can be arranged at the water inlet of the hydropower station by using the crane and suck out the refined silt.

[0037] It should be noted that a crane is an electromechanical device used for vertical lifting or vertical lifting and horizontal movement of heavy objects. The working principle of a crane is mainly to drive the reducer through the motor, and then drive the drum to rotate, so that the rope is wound or released on the drum, thereby realizing the lifting and lowering of the hook. At the same time, through the cooperation of the luffing mechanism and the walking mechanism, the horizontal movement of the goods and the movement of the lifting machinery are realized. Among them, the specific type of the crane can be set according to actual needs, and there is no restriction on this.

[0038] Among them, the crane can be arranged on the shore of the waterway or on a ship sailing in the waterway.

[0039] like Figure 1As shown, in some embodiments, the grabbing device 2 includes: a grabbing frame, a plurality of grabbing buckets 21 and a hydraulic cylinder 22. The grabbing frame is arranged at the lifting end of the lifting equipment 1, and the flushing end of the flushing device 3 and the negative pressure end of the negative pressure device 4 are respectively arranged on the grabbing frame. The grabbing buckets 21 are movably arranged on the grabbing frame, and the plurality of grabbing buckets 21 are distributed at intervals along the circumference of the grabbing frame. The hydraulic cylinder 22 is arranged on the grabbing frame, and the piston rod ends of the hydraulic cylinder 22 are respectively connected to the plurality of grabbing buckets 21 for transmission. The hydraulic cylinder 22 is used to drive the plurality of grabbing buckets 21 to close or open.

[0040] It can be understood that since the grabbing frame is arranged at the lifting end of the lifting equipment 1, and the flushing end of the flushing device 3 and the negative pressure end of the negative pressure device 4 are respectively arranged on the grabbing frame, the flushing end of the flushing device 3 and the negative pressure end of the negative pressure device 4 can be arranged at the lifting end of the lifting equipment 1 using the grabbing frame of the grabbing device 2, and since the grabbing bucket 21 is movably arranged on the grabbing frame, and the piston rod end of the hydraulic cylinder 22 is respectively connected to the multiple grabbing buckets 21 by transmission, the hydraulic cylinder 22 can utilize the extension and retraction of the piston rod to drive the multiple grabbing buckets 21 to close or open, thereby utilizing the closing and opening of the multiple grabbing buckets 21 to realize the grabbing and crushing of the silt floor, thereby meeting the requirement of unobstructed water inlet of the hydropower station.

[0041] It should be noted that the grab frame is not only used to carry the grab bucket 21 and the hydraulic cylinder 22, but also used to carry the flushing end of the flushing device 3 and the negative pressure end of the negative pressure device 4. The specific type of the grab frame can be set according to actual needs and is not limited to this.

[0042] The grab bucket 21 is used to rotate under the drive of the hydraulic cylinder 22 to cooperate with other grab buckets 21 to achieve a closing action or an opening action. The specific type of the grab bucket 21 can be set according to actual needs and is not limited to this.

[0043] The hydraulic cylinder 22 is used to drive the multiple grab buckets 21 to close or open. The specific type of the hydraulic cylinder 22 can be set according to actual needs and is not limited to this. Among them, the stroke range of the hydraulic cylinder 22 can be 0.7m-1.2m.

[0044] The grab 21 and the hydraulic cylinder 22 constitute a hydraulic grab 21. The hydraulic grab 21 is a working device that provides power to the hydraulic cylinder 22 through a hydraulic power source, thereby driving the combined grab 21 to open and close, thereby grabbing and unloading materials. Its working principle mainly utilizes the lever principle and the hydraulic system, and the lever principle is used to amplify the force, while the hydraulic system is responsible for providing power and controlling the opening and closing of the grab 21.

[0045] like Figure 1As shown, in some embodiments, the grabbing device 2 further includes: a steel wire rope 23, the steel wire rope 23 is arranged at the lifting end of the lifting device 1, and the grabbing frame is arranged at one end of the steel wire rope 23 away from the lifting end of the lifting device 1.

[0046] It can be understood that since the wire rope 23 is arranged at the lifting end of the lifting equipment 1, and the grabbing frame is arranged at the end of the wire rope 23 away from the lifting end of the lifting equipment 1, the grabbing frame can use the wire rope 23 to be arranged at the lifting end of the lifting equipment 1, and can also use the flexibility of the wire rope 23 to achieve flexible lifting, avoiding problems such as interference between components.

[0047] It should be noted that the steel wire rope 23 is used for the flexible arrangement of the grab frame at the lifting end of the lifting device 1, and the specific type of the steel wire rope 23 can be set according to actual needs, and there is no limitation on this.

[0048] like Figure 1 As shown, in some embodiments, the flushing device 3 includes: a water pump 31 and a flushing pipe 32, the water inlet end of the flushing pipe 32 is connected to the water outlet end of the water pump 31, and the water outlet end of the flushing pipe 32 is arranged at the lifting end of the lifting equipment 1.

[0049] It can be understood that since the water inlet end of the flushing pipe 32 is connected to the water outlet end of the water pump 31, and the water outlet end of the flushing pipe 32 is arranged at the lifting end of the lifting equipment 1, the water pump 31 can pressurize the water and transport it to the flushing pipe 32, and the high-pressure water can be flushed from the water outlet end of the flushing pipe 32 into the water inlet of the hydropower station, thereby achieving the dispersion and refinement of the broken silt, and then facilitating the suction operation of the silt.

[0050] It should be noted that the water pump 31 is used to boost water delivery so as to utilize the high-pressure water to disperse and refine the broken silt. The specific type of the water pump 31 can be set according to actual needs and is not limited to this. For example, the water pump 31 can be a high-lift water pump 31.

[0051] The water pump 31 may be arranged on the bank of the waterway or on a vessel traveling on the waterway.

[0052] The flushing pipe 32 is used to guide high-pressure water. The specific type of the flushing pipe 32 can be set according to actual needs and is not limited to this. For example, the flushing pipe 32 is a hose with good flexibility.

[0053] In some embodiments, the flushing device 3 further includes: a flushing head, which is arranged at the hoisting end of the hoisting device 1, and the water outlet end of the flushing pipe 32 and the water inlet end of the flushing head are detachably connected.

[0054] It can be understood that since the flushing head is arranged at the hoisting end of the hoisting device 1, and the water outlet end of the flushing pipe 32 and the water inlet end of the flushing head are detachably connected, the water outlet end of the flushing pipe 32 can be arranged at the hoisting end of the hoisting device 1 using the flushing head, which not only ensures stable flushing, but also makes disassembly and assembly more convenient.

[0055] It should be noted that the flushing head is used to guide high-pressure water and flush the high-pressure water toward the sediment floor. The specific type of the flushing head can be set according to actual needs and is not limited to this. For example, the flushing head can be a metal nozzle such as iron, copper, alloy, etc., which is welded on the grab frame.

[0056] like Figure 1 As shown, in some embodiments, the negative pressure device 4 includes: an air compressor 41, a positive pressure pipe 42 and a negative pressure pipe, the air inlet end of the positive pressure pipe 42 is connected to the air outlet end of the air compressor 41, and the air outlet end of the positive pressure pipe 42 is connected to the silt storage device, the air inlet end of the negative pressure pipe is arranged at the hoisting end of the hoisting equipment 1, and the air outlet end of the negative pressure pipe is connected to the negative pressure end of the positive pressure pipe 42, wherein the negative pressure end of the positive pressure pipe 42 is located between the air inlet end and the air outlet end.

[0057] It can be understood that since the air inlet end of the positive pressure pipe 42 is connected to the air outlet end of the air compressor 41, and the air outlet end of the positive pressure pipe 42 is connected to the silt storage device, the air outlet end of the negative pressure pipe is connected to the negative pressure end of the positive pressure pipe 42, and the negative pressure end of the positive pressure pipe 42 is located between the air inlet end and the air outlet end, the air compressor 41 can deliver positive pressure gas to the positive pressure pipe 42, thereby generating negative pressure in the negative pressure pipe, thereby realizing the suction and discharge of sludge along the air inlet end of the negative pressure pipe to the air outlet end of the positive pressure pipe 42.

[0058] It should be noted that the air compressor 41 is used to generate positive pressure gas, and the compressed gas is transported from the air inlet end to the air outlet end of the positive pressure pipe 42, and the positive pressure gas generates negative pressure at the negative pressure end of the positive pressure pipe 42, so that the sludge is transported from the air inlet end to the air outlet end of the negative pressure pipe, thereby realizing the suction operation of the sludge. The specific type of the air compressor 41 can be set according to actual needs and is not limited to this.

[0059] The air compressor 41 may be arranged on the bank of the waterway or on a ship sailing on the waterway.

[0060] The positive pressure pipe 42 is used to transport positive pressure gas. The specific type of the positive pressure pipe 42 can be set according to actual needs and is not limited to this. For example, the positive pressure pipe 42 can be divided into two parts, both parts of the pipeline are flexible hoses with good flexibility, and the connecting part of the two parts of the pipeline is arranged at the grabbing frame as the negative pressure end.

[0061] The negative pressure tube is used to transport negative pressure gas. The specific type of the negative pressure tube can be set according to actual needs and is not limited to this. For example, the negative pressure tube is a hose with good flexibility, and the negative pressure tube is arranged at the grabbing frame.

[0062] In some embodiments, the negative pressure device 4 also includes: a silt discharge joint, which is arranged at the lifting end of the lifting equipment 1, and the air outlet end of the negative pressure pipe is connected to the air inlet end of the silt discharge joint, and the negative pressure end of the positive pressure pipe 42 and the air outlet end of the silt discharge joint are detachably connected.

[0063] It can be understood that since the silt removal joint is arranged at the lifting end of the lifting equipment 1, and the air outlet end of the negative pressure pipe is connected to the air inlet end of the silt removal joint, the negative pressure end of the positive pressure pipe 42 and the air outlet end of the silt removal joint are detachably connected, so that the negative pressure end of the positive pressure pipe 42 can be connected to the air outlet end of the negative pressure pipe by using the silt removal joint, which can not only ensure stable negative pressure, but also make disassembly and assembly more convenient.

[0064] It should be noted that the silt discharge joint is used to guide the silt. The specific type of the silt discharge joint can be set according to actual needs and is not limited to this. For example, the silt discharge joint can be a metal joint such as iron, copper, alloy, etc., which is welded on the grab frame.

[0065] like Figure 2 As shown, the embodiment of the present disclosure also proposes a method for cleaning silt at the water inlet of a hydropower station. The method is based on the silt cleaning system at the water inlet of the hydropower station as in the embodiment of the present disclosure, and the method includes:

[0066] S1: placing the lifting end of the lifting equipment 1 close to the water inlet of the hydropower station;

[0067] S2: using the grabbing device 2 to grab the silt floor at the water inlet of the hydropower station to break up the silt;

[0068] S3: using the dispersing device 3 to disperse the broken sediment to refine the sediment;

[0069] S4: The refined sludge is sucked out using the negative pressure device 4 .

[0070] It can be understood that by setting the lifting end of the lifting equipment 1 close to the water inlet of the hydropower station, using the grabbing device 2 to grab the silt floor at the water inlet of the hydropower station, using the dispersing device 3 to disperse the broken silt, and using the negative pressure device 4 to suck the refined silt, the silt floor at the water inlet of the hydropower station can be cleaned with high cleaning efficiency and good cleaning effect, thereby reducing the congestion problem at the water inlet of the hydropower station and meeting the stable and efficient power generation needs of the hydropower station.

[0071] In some embodiments, the method further comprises:

[0072] Grab the sediment on the upper layer of the water inlet of the hydropower station by using the grabbing device 2;

[0073] The grabbing device 2 is used to grab the silt floor below the water inlet of the hydropower station.

[0074] It can be understood that before using the grabbing device 2 to grab the silt floor at the lower layer of the water inlet of the hydropower station, the grabbing device 2 is first used to grab the silt at the upper layer of the water inlet of the hydropower station, thereby reducing the impact of the upper silt on the grabbing device 2, the dispersing device 3 and the negative pressure device 4, thereby improving the cleaning efficiency of the silt floor.

[0075] It should be noted that the sediments on the upper layer are mostly large sunken wood, stones, etc.

[0076] The silt cleaning system and method for the water inlet of a hydropower station based on this embodiment has high cleaning efficiency and good cleaning effect, simple structure, convenient operation, low cost, and great value for promotion and application.

[0077] In the description of the present disclosure, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0078] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0080] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.

Claims

1. A silt cleaning system for a water inlet of a hydropower station, characterized in that: include: A hoisting device, wherein the hoisting end of the hoisting device is arranged close to the water inlet of the hydropower station; A grabbing device, wherein the grabbing end of the grabbing device is arranged at the lifting end of the lifting device, and the grabbing device is used to grab the silt floor of the water inlet of the hydropower station to break the silt; A dispersing device, wherein the flushing end of the dispersing device is arranged at the hoisting end of the hoisting device, and the dispersing device is used to disperse the broken silt to refine the silt; A negative pressure device, wherein the negative pressure end of the negative pressure device is arranged at the hoisting end of the hoisting equipment, and the negative pressure device is used to suck the refined sludge.

2. The silt cleaning system for the water inlet of a hydropower station according to claim 1, characterized in that: The hoisting equipment includes: A crane, wherein the hook of the crane is arranged close to the water inlet of the hydropower station, and the grabbing end of the grabbing device, the flushing end of the flushing device and the negative pressure end of the negative pressure device are respectively arranged on the hook of the crane.

3. The silt cleaning system for the water inlet of a hydropower station according to claim 1, characterized in that: The grabbing device comprises: A grabbing frame, wherein the grabbing frame is arranged at the lifting end of the lifting device, and the flushing end of the flushing device and the negative pressure end of the negative pressure device are respectively arranged on the grabbing frame; A plurality of grab buckets, wherein the grab buckets are movably arranged on the grab frame, and the plurality of grab buckets are spaced apart along the circumference of the grab frame; A hydraulic cylinder is arranged on the grab frame, and the piston rod ends of the hydraulic cylinder are respectively connected to the multiple grab buckets for transmission, and the hydraulic cylinder is used to drive the multiple grab buckets to close or open.

4. The silt cleaning system for the water inlet of a hydropower station according to claim 3, characterized in that: The gripping device also includes: A steel wire rope is arranged at the hoisting end of the hoisting device, and the grabbing frame is arranged at an end of the steel wire rope away from the hoisting end of the hoisting device.

5. The silt cleaning system for the water inlet of a hydropower station according to claim 1, characterized in that: The dispersing device comprises: Water pump; A flushing pipe, wherein the water inlet end of the flushing pipe is connected to the water outlet end of the water pump, and the water outlet end of the flushing pipe is arranged at the hoisting end of the hoisting equipment.

6. The silt cleaning system for the water inlet of a hydropower station according to claim 5, characterized in that: The dispersing device also includes: A flushing head is arranged at the hoisting end of the hoisting device, and the water outlet end of the flushing pipe and the water inlet end of the flushing head are detachably connected.

7. The silt cleaning system for the water inlet of a hydropower station according to claim 1, characterized in that: The negative pressure device comprises: Air compressor; A positive pressure pipe, wherein the air inlet end of the positive pressure pipe is connected to the air outlet end of the air compressor, and the air outlet end of the positive pressure pipe is connected to the silt storage device; A negative pressure pipe, the air inlet end of the negative pressure pipe is arranged at the hoisting end of the hoisting equipment, and the air outlet end of the negative pressure pipe is connected to the negative pressure end of the positive pressure pipe, wherein the negative pressure end of the positive pressure pipe is located between the air inlet end and the air outlet end.

8. The silt cleaning system for the water inlet of a hydropower station according to claim 7, characterized in that: The negative pressure device also includes: The silt discharge joint is arranged at the hoisting end of the hoisting equipment, and the air outlet end of the negative pressure pipe is connected to the air inlet end of the silt discharge joint, and the negative pressure end of the positive pressure pipe is detachably connected to the air outlet end of the silt discharge joint.

9. A method for cleaning silt at a water inlet of a hydropower station, characterized in that: The method is based on the silt cleaning system for the water inlet of a hydropower station as claimed in any one of claims 1 to 8, and the method comprises: The lifting end of the lifting equipment is arranged close to the water inlet of the hydropower station; Using a grabbing device to grab the silt floor of the water inlet of the hydropower station to break up the silt; Using a dispersing device to disperse the broken silt to refine the silt; The finely divided sludge is sucked out using a negative pressure device.

10. The method for cleaning silt at the water inlet of a hydropower station according to claim 9, characterized in that: The method further comprises: Using the grabbing device to grab the sediment on the upper layer of the water inlet of the hydropower station; The grabbing device is used to grab the silt floor below the water inlet of the hydropower station.

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