Movable water taking device suitable for river channel and water taking method

Abstract

The invention provides a movable water taking device suitable for a river channel and a water taking method, and belongs to the technical field of water supply engineering, the movable water taking device comprises a water taking pipeline which is formed by detachably connecting a plurality of sections of water taking pipes into a whole through pipeline connectors; the small-caliber end of the diverging pipe is connected with one end of the water taking pipeline; the filtering piece is connected to the large-diameter end of the diverging pipe; the multiple steel pipe pile supports are arranged on the lower side of the water taking pipeline at equal intervals in the pipe length direction of the water taking pipeline; the multiple steel pipe pile supports are used for supporting a water taking pipeline. Each row of steel pipe pile array is parallel to the water taking pipeline, and each row of steel pipe pile array comprises a plurality of steel pipe piles which are arranged at equal intervals; the multiple steel pipe pile supports are connected to the steel pipe pile array. According to the water taking device and the water taking method, the length of the water taking pipeline can be flexibly adjusted according to the river channel scouring or river channel silting condition, and then the water taking opening of the water taking pipeline is moved to a proper position, so that the risks that the water taking pipe is scoured and exposed and the water taking pipe is snapped due to ship anchoring can be avoided; and the risks that the water taking pipe is blocked and water cannot be taken due to the fact that the water taking head is deposited can be avoided, and the water taking safety can be better guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of water supply engineering, and more specifically, relates to a movable water intake device and a water intake method suitable for use in river waterways. Background Art

[0002] The water source of urban water plants is mostly taken from rivers, which are taken through water intake heads and then enter the water plants through water intake pipes and water intake pump houses. Usually, in order to ensure water intake safety, water intake heads should be set up as far as possible away from river channels and river sections with complex silt erosion and sedimentation changes.

[0003] However, with the rapid development of my country's urban economy, most of the river banks in cities have built facilities that may produce pollutants, such as docks and sewage outlets. At the same time, in order to ensure the water quality safety of urban water plants, according to the "Technical Specifications for the Division of Drinking Water Source Protection Areas" (HJ 338-2018), drinking water source protection areas must be set up 3km upstream and 300m downstream of the water intake, and sewage facilities are prohibited. Therefore, in some cities, on the premise of ensuring the water quality safety of water plants, water intakes can often only be set up in river channels and river sections with complex changes in sediment erosion and siltation.

[0004] The river channels and river sections with complex changes in sediment scouring and siltation have the following characteristics: ① Due to the limitation of the channel elevation, the water intake can only be located below the low elevation of the planned channel, resulting in the water intake often being close to the bottom of the riverbed; ② The river channel evolution environment is highly sensitive, and the scouring and silting changes are complex, resulting in large changes in the scouring and silting of the riverbed bottom. If the water intake is close to the bottom of the riverbed, there will be a risk of scouring the exposed water intake pipe and silting up the water intake head. Since the water intake pipe is located below the channel, if the exposed water intake pipe is too long, there will be a risk of ships anchoring and pulling off the water intake pipe; silting up the water intake head will cause the water intake pipe to be blocked and water cannot be taken. Summary of the invention

[0005] The purpose of the present invention is to provide a movable water intake device and water intake method suitable for river waterways. The water intake device and water intake method are suitable for river waterways with complex silt scouring and siltation changes, so as to solve the problem of water intake safety in river waterways and river sections with complex silt scouring and siltation changes.

[0006] To achieve the above-mentioned purpose, the first aspect of the present invention provides a movable water intake device suitable for use in river waterways, comprising:

[0007] A water intake pipeline, which is composed of multiple sections of water intake pipes that are detachably connected to each other through pipe connectors;

[0008] A gradually expanding pipe, the small-diameter end of which is connected to one end of the water intake pipe;

[0009] A filter element connected to the large-diameter end of the gradually expanding tube;

[0010] A plurality of steel pipe pile supports are arranged at equal intervals on the lower side of the water intake pipeline along the length direction of the water intake pipeline; the plurality of steel pipe pile supports are used to support the water intake pipeline; and,

[0011] At least two rows of steel pipe pile arrays, each row of the steel pipe pile array is arranged in parallel with the water intake pipeline, and each row of the steel pipe pile array includes a plurality of steel pipe piles arranged at equal intervals; a plurality of the steel pipe pile brackets are connected to the steel pipe pile array.

[0012] Furthermore, the filter element is a grid or a filter mesh.

[0013] Furthermore, the filter element is a grille, the grille hole width is 60mm to 100mm, and the grille hole length is 100mm to 140mm.

[0014] Furthermore, the water intake pipe, the gradually expanding pipe and the filter element are all connected by welding.

[0015] Furthermore, an adjustment knot is connected to the lower side of the steel pipe pile bracket, and the adjustment knot is cylindrical. An annular groove is provided on the cylinder wall of the adjustment knot, and a circular plate is movably connected in the annular groove; the bottom of the steel pipe pile is filled with concrete, and the top is a hollow structure with a mounting hole reserved on the top. Bolts pass through the mounting hole to connect the steel pipe pile to the adjustment knot, and the top of the steel pipe pile abuts against the circular plate.

[0016] Furthermore, two water intake pipes are provided in parallel, and the plurality of steel pipe pile supports include a first steel pipe pile support and a plurality of second steel pipe pile supports, and the first steel pipe pile support is arranged close to the water intake of the water intake pipe; the first steel pipe pile support is in the shape of a "sun", and is provided with four symmetrical first supports, and each of the first supports is provided with a first curved surface for supporting the water intake pipe.

[0017] Furthermore, the second steel pipe pile support is in a "1" shape, and is provided with two symmetrical second supports, and each of the second supports is provided with a second arc surface for supporting the water intake pipe.

[0018] Furthermore, it also includes a plurality of pipe fixtures, each of which is provided with a third arc-shaped surface that fits the outer wall of the water intake pipe, and the pipe fixture is bolted to the first support and the second support, and the water intake pipe is clamped between the first support and the pipe fixture and between the second support and the pipe fixture.

[0019] Furthermore, the pipe connector includes two symmetrical arc-shaped pipe segments and a waterproof rubber ring, the waterproof rubber ring is sleeved on the ends of two adjacent water intake pipes, the two arc-shaped pipe segments are connected by mounting bolts, and the water intake pipe is clamped between the two arc-shaped pipe segments.

[0020] A second aspect of the present invention provides a water intake method using the above-mentioned movable water intake device suitable for use in river waterways, comprising the following steps:

[0021] Step 1: Determine the siltation line and scour line at the bottom of the riverbed based on hydrological river development analysis;

[0022] Step 2: Arrange multiple steel pipe piles at equal intervals within the range of the siltation line and the scour line;

[0023] Step 3: Position the first steel pipe pile support between the siltation line and the scouring line, and connect the first steel pipe pile support to the plurality of steel pipe piles;

[0024] Step 4: placing a plurality of second steel pipe pile supports on the plurality of steel pipe piles on one side of the first steel pipe pile support, and connecting the plurality of second steel pipe pile supports to the plurality of steel pipe piles;

[0025] Step 5: placing a water intake pipe on a plurality of steel pipe pile supports, connecting the water intake pipes with each other through a pipe connector, and connecting the water intake pipe with the steel pipe pile supports through a pipe fixture; making the water intake of the water intake pipe located between the siltation line and the scouring line;

[0026] Step 6: When the river channel is scoured, the redundant part of the water intake pipe and part of the steel pipe pile support on the original water intake pipe are removed, so that the water intake pipe is shortened and its water intake port is moved near the scour line;

[0027] Step 7: When siltation occurs in the river channel, a part of the water intake pipe and a part of the steel pipe pile support are connected to the original water intake pipe, so that the water intake port of the water intake pipe is moved to the vicinity of the siltation line after the water intake pipe is extended.

[0028] Compared with the prior art, the present invention has the following technical effects:

[0029] The present invention is a movable water intake device suitable for use in river waterways. By configuring a water intake pipeline to be detachably connected by multiple sections of water intake pipelines, and arranging multiple steel pipe pile brackets and multiple steel pipe piles for supporting the water intake pipeline at equal intervals along the length of the water intake pipeline, the water intake device of the present invention can flexibly adjust the length of the water intake pipeline according to the scouring or silting conditions of the river channel, and then move the water intake port of the water intake pipeline to a suitable position. The water intake device of the present invention can avoid the risks of scouring the exposed water intake pipeline and the water intake pipeline being pulled apart by the anchoring of the ship on the one hand, and can avoid the risks of clogging the water intake pipeline and being unable to draw water due to silting of the water intake head on the other hand. The water intake device of the present invention can better ensure the safety of water intake.

[0030] The water intake method of the present invention, which is suitable for a movable water intake device under a river waterway, can flexibly adjust the length of the water intake pipe according to the river scouring or river siltation conditions, and then move the water intake port of the water intake pipe to a suitable position. The water intake method of the present invention can avoid the risk of scouring the exposed water intake pipe and the risk of the water intake pipe being broken by the ship dropping anchor, and can avoid the risk of the water intake pipe being blocked and unable to draw water due to siltation of the water intake head. The water intake method of the present invention can better ensure the safety of water intake. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A schematic diagram of a top view structure of a movable water intake device in an initial state provided by an embodiment of the present invention; the initial state refers to a state where the river channel is not eroded and silted;

[0033] Figure 2 A schematic diagram of a top view structure of a movable water intake device under a river channel in a flushing state provided by an embodiment of the present invention;

[0034] Figure 3 A schematic diagram of a top view structure of a movable water intake device under a river channel in a silted state provided by an embodiment of the present invention;

[0035] Figure 4 A schematic cross-sectional structure diagram of a movable water intake device in an initial state applicable to a river waterway provided by an embodiment of the present invention;

[0036] Figure 5A schematic cross-sectional structure diagram of a movable water intake device under a river channel in a flushing state provided by an embodiment of the present invention;

[0037] Figure 6 A schematic cross-sectional structure diagram of a movable water intake device under a river channel in a silted state provided by an embodiment of the present invention;

[0038] Figure 7 A schematic diagram of a top view of a first steel pipe pile support and a second steel pipe pile support provided in an embodiment of the present invention;

[0039] Figure 8 The cross-sectional structure diagram of the first steel pipe pile support provided by the embodiment of the present invention is as follows: Figure 8 same;

[0040] Fig. 9 A schematic diagram of the top view of the pipe fixture provided by an embodiment of the present invention;

[0041] Fig.10 A schematic cross-sectional structure diagram of a pipe fixture provided by an embodiment of the present invention;

[0042] Fig.11 The schematic diagram of the structure of the steel pipe pile provided in the embodiment of the present invention is connected to the first steel pipe pile support on its upper side, and the schematic diagram of the structure of the steel pipe pile connected to the second steel pipe pile support on its upper side is Fig.11 same;

[0043] Fig.12 A schematic cross-sectional structure diagram of a pipe connector provided by an example of the present invention;

[0044] Fig.13 A schematic top view of the structure of a pipe connector provided in an example of the present invention.

[0045] Among them, the reference numerals in the figures are:

[0046] 1. Water intake pipe, 2. Gradual expansion pipe, 3. Filter element, 4. First steel pipe pile bracket, 5. Second steel pipe pile bracket, 6. Steel pipe pile, 7. Adjustment knot, 8. Round plate, 9. Concrete, 10. Bolts, 11. Concrete pouring top surface, 12. Pipe connector, 13. First support, 14. Pipe fixer, 15. Arc pipe segment, 16. Water-stop rubber ring, 17. Installation bolts. DETAILED DESCRIPTION

[0047] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0049] The terms "first" and "second" are used only for descriptive purposes to distinguish objects such as substances from each other, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. For example, without departing from the scope of the embodiments of the present invention, the first XX may also be referred to as the second XX, and similarly, the second XX may also be referred to as the first XX. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0050] Example 1

[0051] Embodiment 1 of the present invention provides a movable water intake device suitable for use in river waterways, and its structure is as follows: Figure 1-13 As shown, the water intake device includes a water intake pipeline, a gradually expanding pipe 2, a filter 3, a plurality of steel pipe pile brackets and at least two rows of steel pipe pile arrays. The water intake pipeline is composed of multiple sections of water intake pipes 1, which are detachably connected to each other through a pipe connector 12; the small-diameter end of the gradually expanding pipe 2 is connected to one end of the water intake pipeline; the filter 3 is connected to the large-diameter end of the gradually expanding pipe 2; a plurality of steel pipe pile brackets are arranged at equal intervals on the lower side of the water intake pipeline along the length direction of the water intake pipeline; a plurality of steel pipe pile brackets are used to support the water intake pipeline; each row of steel pipe pile arrays is arranged parallel to the water intake pipeline, and each row of steel pipe pile arrays includes a plurality of steel pipe piles 6 arranged at equal intervals, and a plurality of steel pipe pile brackets are connected to the steel pipe pile arrays.

[0052] In the embodiment of the present invention, the steel pipe pile array is provided with three rows, and each row of the steel pipe pile array includes a plurality of steel pipe piles 6 arranged at equal intervals from left to right. The steel pipe pile array provides support for the steel pipe pile bracket above it, and the steel pipe pile bracket provides support for the water intake pipe above it.

[0053] A movable water intake device suitable for river waterways according to an embodiment of the present invention is configured to be a water intake pipeline composed of multiple sections of water intake pipes 1 that are detachably connected, and multiple steel pipe pile brackets and multiple steel pipe piles 6 for supporting the water intake pipeline are evenly spaced along the length of the water intake pipeline. The water intake device according to the embodiment of the present invention can flexibly adjust the length of the water intake pipeline according to the scouring or silting conditions of the river channel, and then quickly move the water intake port of the water intake pipeline to a suitable position. The water intake device according to the embodiment of the present invention can avoid the risk of scouring the exposed water intake pipe 1 and the risk of the water intake pipe 1 being pulled apart by the anchoring of the ship, and can avoid the risk of blockage of the water intake pipe 1 and inability to draw water due to silting of the water intake head on the other hand. The water intake device according to the embodiment of the present invention can better ensure the safety of water intake.

[0054] Furthermore, the filter element 3 of the embodiment of the present invention is a grid or a filter net, which is used to filter and remove impurities from water entering the water intake pipe to prevent large pieces of debris from clogging the water intake pipe.

[0055] Furthermore, the filter element 3 of the embodiment of the present invention is a grille with a hole width of 60mm to 100mm and a hole length of 100mm to 140mm, so as to better filter and remove impurities from the water entering the water intake pipe and prevent large debris from clogging the water intake pipe.

[0056] Furthermore, the water intake pipe, the gradually expanding pipe 2 and the filter element 3 of the embodiment of the present invention are all connected by welding. After being welded together, it is convenient to move the water intake device as a whole, thereby improving the movement efficiency.

[0057] Further, the lower side of the steel pipe pile support of the embodiment of the present invention is connected with an adjustment knot 7, which is cylindrical, and an annular groove is provided on the cylinder wall of the adjustment knot 7, and a circular plate 8 is movably connected in the annular groove; the bottom of the steel pipe pile 6 is filled with concrete 9, and the upper side of the concrete 9 is a concrete casting top surface 11, and the top of the steel pipe pile 6 is a hollow structure, and a mounting hole is reserved at the top, and a bolt 10 passes through the mounting hole to connect the steel pipe pile 6 with the adjustment knot 7, and the top of the steel pipe pile 6 abuts against the circular plate 8. The top elevation of the steel pipe pile 6 can be determined by the fixed height of the circular plate 8 on the adjustment knot 7. Specifically, the steel pipe pile support, the adjustment knot 7 and the circular plate 8 of the embodiment of the present invention are all made of steel, and the adjustment knot 7 has a steel cylinder. The adjustment knot 7 can be welded to the lower side of the steel pipe pile support, and the steel pipe pile support can be made of a steel beam or welded steel beams. The steel pipe pile 6 and the steel pipe pile support are bolted together by bolts 10.

[0058] Furthermore, the water intake pipeline of the embodiment of the present invention is provided with two in parallel, and the plurality of steel pipe pile supports include a first steel pipe pile support 4 and a plurality of second steel pipe pile supports 5. The first steel pipe pile support 4 is provided near the water intake of the water intake pipeline; the first steel pipe pile support 4 is in the shape of a "sun", and is provided with four symmetrical first supports 13, and each first support 13 is provided with a first arc surface for supporting the water intake pipeline. By designing the first steel pipe pile support 4 as a "sun" shaped steel beam structure, the overall lateral stiffness of the first steel pipe pile support 4 is increased to better resist the horizontal load transmitted to the top of the steel pipe pile 6 by the gradually expanding pipe 2 and the filter element 3 under the scouring action of the water flow.

[0059] Furthermore, the second steel pipe pile support 5 of the embodiment of the present invention is an "1"-shaped steel beam structure, on which two symmetrical second supports are provided, and each second support is provided with a second arc surface for supporting the water intake pipe. The shape and structure of the second support are the same as the first support 13. The first support 13 and the second support are both used to place the water intake pipe and provide support for the water intake pipe.

[0060] Furthermore, the water intake device of the embodiment of the present invention further comprises a plurality of pipe holders 14, the pipe holder 14 is provided with a third arc-shaped surface that fits with the outer wall of the water intake pipe, the pipe holder is bolted to the first support 13 and the second support, bolt holes are reserved at corresponding positions of the pipe holder, the first support 13 and the second support, and the water intake pipe is clamped between the first support 13 and the pipe holder 14 and between the second support and the pipe holder 14. That is, the first support 13 and the second support are provided at the lower side of the water intake pipe to provide support for the water intake pipe, and the upper semicircular part of the water intake pipe is further fixed to the first support 13 or the second support through the pipe holder 14 to prevent the water intake pipe from slipping in the first support 13 or the second support.

[0061] Furthermore, the pipe connector 12 of the embodiment of the present invention is a detachable pipe connector with a water-stopping function, and the pipe connector includes two symmetrical arc-shaped pipe segments 15 and a water-stopping rubber ring 16. The water-stopping rubber ring 16 is sleeved on the ends of two adjacent water intake pipes 1. The two arc-shaped pipe segments 15 are connected by mounting bolts 17, and the water intake pipe is clamped between the two arc-shaped pipe segments 15. Specifically, the water-stopping rubber ring 16 is sleeved on the ends of the two water intake pipes 1 to be connected, and the water-stopping rubber ring 16 is sleeved on the ends of the two water intake pipes 1 at the same time. The arc-shaped pipe segment 15 is installed so that the arc-shaped pipe segment 15 holds the water-stopping rubber ring 16 tightly, and the mounting bolts 17 are tightened to achieve the tightening force required by the design, so as to realize the connection of the two water intake pipes 1 and achieve the water-stopping effect. Multiple water-stopping rubber rings 16 can be set along the length direction of the water intake pipe 1, and it is sufficient to ensure that at least one water-stopping rubber ring 16 is provided at the connection point of the two adjacent water intake pipes 1.

[0062] Example 2

[0063] Embodiment 2 of the present invention provides a water intake method using the water intake device of embodiment 1, comprising the following steps:

[0064] Step 1: Determine the siltation line and scour line at the bottom of the riverbed based on hydrological river development analysis;

[0065] Step 2: Arrange multiple steel pipe piles 6 at equal intervals within the range of the siltation line and the scour line;

[0066] Step 3: Position the first steel pipe pile support 4 between the siltation line and the scouring line, and connect the first steel pipe pile support 4 to a plurality of steel pipe piles 6, such as Figure 1 , Figure 4 As shown;

[0067] Step 4: placing a plurality of second steel pipe pile supports 5 on the plurality of steel pipe piles 6 on one side of the first steel pipe pile support 4, and connecting the plurality of second steel pipe pile supports 5 to the plurality of steel pipe piles 6;

[0068] Step 5: Place the water intake pipe on multiple steel pipe pile supports, connect the water intake pipes 1 to the water intake pipes 1 through the pipe connector 12, and connect the water intake pipes 1 to the steel pipe pile supports through the pipe fixture 14; make the water intake of the water intake pipe between the siltation line and the flushing line, such as Figure 1 , Figure 4 As shown;

[0069] Step 6: When the river channel is scoured, remove the redundant part of the water intake pipe 1 and part of the second steel pipe pile support 5 on the original water intake pipe, shorten the water intake pipe and move its water intake port to the vicinity of the scour line, that is, the distance between the water intake port of the water intake pipe and the scour line is 5 to 10 meters. Figure 2 , Figure 5 As shown, the exposed water intake pipe 1 is prevented from being eroded, and the exposed water intake pipe 1 is prevented from being too long, which may cause the risk of the ship dropping anchor and breaking the water intake pipe 1;

[0070] Step 7: When the river channel is silted up, a part of the water intake pipe 1 and a part of the second steel pipe pile support 5 are connected to the original water intake pipe, so that the water intake port of the water intake pipe is moved to the vicinity of the siltation line after the water intake pipe is extended, that is, the distance between the water intake port of the water intake pipe and the siltation line is 5 to 10 meters. Figure 3 , Figure 6 As shown, the risk of silting up the water intake head and causing blockage of the water intake pipe 1 is effectively avoided.

[0071] A water intake method for a movable water intake device under a river waterway according to an embodiment of the present invention can flexibly adjust the length of the water intake pipe according to the river scouring or river siltation conditions, and then move the water intake port of the water intake pipe to a suitable position. The water intake method of the embodiment of the present invention can avoid the risk of scouring the exposed water intake pipe 1 and the water intake pipe 1 being broken by the ship dropping anchor on the one hand, and can avoid the risk of blockage of the water intake pipe 1 and inability to draw water due to siltation of the water intake head on the other hand.

[0072] When the river channel undergoes silt scouring and silting changes, the water intake position can be quickly moved by the water intake device and water intake method of the embodiment of the present invention, thereby better ensuring the safety of water intake. The water intake device and water intake method of the embodiment of the present invention are suitable for river channels with complex silt scouring and silting changes.

[0073] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A movable water intake device suitable for use in river channels, characterized in that: include: A water intake pipeline, which is composed of multiple sections of water intake pipes that are detachably connected to each other through pipe connectors; A gradually expanding pipe, the small-diameter end of which is connected to one end of the water intake pipe; A filter element connected to the large-diameter end of the gradually expanding tube; A plurality of steel pipe pile supports are arranged at equal intervals on the lower side of the water intake pipeline along the length direction of the water intake pipeline; the plurality of steel pipe pile supports are used to support the water intake pipeline; and, At least two rows of steel pipe pile arrays, each row of the steel pipe pile array is arranged in parallel with the water intake pipeline, and each row of the steel pipe pile array includes a plurality of steel pipe piles arranged at equal intervals; a plurality of the steel pipe pile brackets are connected to the steel pipe pile array.

2. A movable water intake device suitable for use in river channels as claimed in claim 1, characterized in that: The filter element is a grid or a filter net.

3. A movable water intake device suitable for use in river channels as claimed in claim 2, characterized in that: The filter element is a grid, the grid hole width is 60mm-100mm, and the grid hole length is 100mm-140mm.

4. A movable water intake device suitable for use in river channels as claimed in claim 1, characterized in that: The water intake pipeline, the gradually expanding pipe and the filter element are all connected by welding.

5. The movable water intake device suitable for river waterways as claimed in claim 1, characterized in that: An adjustment knot is connected to the lower side of the steel pipe pile bracket, and the adjustment knot is cylindrical. An annular groove is provided on the cylinder wall of the adjustment knot, and a circular plate is movably connected in the annular groove; the bottom of the steel pipe pile is filled with concrete, and the top is a hollow structure with a mounting hole reserved on the top. Bolts pass through the mounting hole to connect the steel pipe pile to the adjustment knot, and the top of the steel pipe pile abuts against the circular plate.

6. A movable water intake device suitable for use in river channels as claimed in claim 1, characterized in that: Two water intake pipes are arranged in parallel, and the multiple steel pipe pile supports include a first steel pipe pile support and multiple second steel pipe pile supports. The first steel pipe pile support is arranged close to the water intake of the water intake pipe; the first steel pipe pile support is in the shape of a "sun", and four symmetrical first supports are arranged on it, and each of the first supports is provided with a first curved surface for supporting the water intake pipe.

7. A movable water intake device suitable for use in river channels as claimed in claim 6, characterized in that: The second steel pipe pile support is in the shape of a "1", and is provided with two symmetrical second supports, and each of the second supports is provided with a second arc surface for supporting the water intake pipe.

8. A movable water intake device suitable for use in river channels as claimed in claim 7, characterized in that: It also includes multiple pipe fixers, each of which is provided with a third arc-shaped surface that fits the outer wall of the water intake pipe. The pipe fixer is bolted to the first support and the second support, and the water intake pipe is clamped between the first support and the pipe fixer and between the second support and the pipe fixer.

9. A movable water intake device suitable for use in river channels as claimed in any one of claims 1 to 8, characterized in that: The pipeline connector includes two symmetrical arc-shaped pipe segments and a water-stopping rubber ring. The water-stopping rubber ring is sleeved on the ends of two adjacent water intake pipes. The two arc-shaped pipe segments are connected by mounting bolts, and the water intake pipe is clamped between the two arc-shaped pipe segments.

10. A water intake method using a movable water intake device suitable for river waterways according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Determine the siltation line and scour line at the bottom of the riverbed based on hydrological river development analysis; Step 2: Arrange multiple steel pipe piles at equal intervals within the range of the siltation line and the scour line; Step 3: Position the first steel pipe pile support between the siltation line and the scouring line, and connect the first steel pipe pile support to the plurality of steel pipe piles; Step 4: placing a plurality of second steel pipe pile supports on the plurality of steel pipe piles on one side of the first steel pipe pile support, and connecting the plurality of second steel pipe pile supports to the plurality of steel pipe piles; Step 5: placing a water intake pipe on a plurality of steel pipe pile supports, connecting the water intake pipes with each other through a pipe connector, and connecting the water intake pipe with the steel pipe pile supports through a pipe fixture; making the water intake of the water intake pipe located between the siltation line and the scouring line; Step 6: When the river channel is scoured, the redundant part of the water intake pipe and part of the steel pipe pile support on the original water intake pipe are removed, so that the water intake pipe is shortened and its water intake port is moved near the scour line; Step 7: When siltation occurs in the river channel, a part of the water intake pipe and a part of the steel pipe pile support are connected to the original water intake pipe, so that the water intake port of the water intake pipe is moved to the vicinity of the siltation line after the water intake pipe is extended.

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