Double-decked superimposed water conduit

Abstract

The application discloses a double-layer superimposed water conveying gallery and belongs to the technical field of ship lock water conveying gallery. The double-layer superimposed water conveying gallery comprises a shunt water conveying gallery and superimposed galleries which are connected with each other, the superimposed gallery is provided with two superimposed galleries which are arranged in a corresponding manner in a superimposed mode, gallery inner walls at connecting positions of the shunt water conveying gallery and the superimposed gallery are fixedly installed with mounting plates through bolts, the outer side of the mounting plate is elastically connected with a flow guide assembly through a buffer mechanism, the outer side of the flow guide assembly is fixedly connected with a replaceable wear plate through bolts, and the flow guide assembly and a movable sleeve are provided with a capsule driving assembly. The double-layer superimposed water conveying gallery can decompose water flow energy, reduce direct impact of high-speed water flow on a lock chamber, ensure that the water surface of the lock chamber stably rises or falls, and is provided with a shunt mechanism, so that the shunt stability is ensured by avoiding that the gallery inner wall is impacted by high-speed water flow during shunting.

Description

Technical Field

[0001] This invention relates to the field of water conveyance channel technology for ship locks, specifically a double-layered composite water conveyance channel. Background Technology

[0002] The double-layer superimposed water conveyance channel of the lock is an innovative water conveyance structure designed for high water head, complex geology or renovation and expansion projects. It optimizes water flow distribution, improves water conveyance efficiency and reduces hydraulic fluctuations through the synergistic effect of the upper and lower channels.

[0003] Chinese Patent No. CN115324020B, published on November 11, 2022, discloses a self-balancing outflow water conveyance system for an ultra-high head ship lock. The system includes a lock chamber, main corridors located on both sides of the lock chamber, a first diversion port located in the middle of the lock chamber, and second diversion ports located at 1 / 4 and 3 / 4 of the lock chamber length, respectively. The outlet of the first diversion port is connected to the second diversion port through a middle branch corridor, and the second diversion port is connected to the outlet branch corridor. The outlet branch corridor is divided into an independent upper outlet branch corridor and a lower outlet branch corridor by a partition in the middle. The inlet of the upper outlet branch corridor is located at the end of the second diversion port, and the inlet of the lower outlet branch corridor is located at the other end away from the second diversion port, and is connected to the second diversion port by a connecting corridor. By stacking two outflow branch corridors with opposite inflow directions, and utilizing the inherent flow patterns of multiple branch outlets, the outflow from the upper and lower branch corridors is made complementary, achieving an automatic balanced outflow effect across the entire outflow area during the entire water conveyance process. This improves the safety of ships passing through the lock, increases the water conveyance efficiency of the lock chamber, and enhances passenger and cargo transport capacity.

[0004] Chinese patent CN107165150B, published on September 15, 2017, discloses a vertical flow diversion energy dissipation structure at the bottom of a ship lock and its construction method. This structure employs a decentralized water conveyance method, utilizing the main corridor of the lock chamber's water conveyance system floor slab to receive water from branch corridors in the middle of the lock chamber, followed by vertical diversion and inertial water conveyance in two sections. This solves technical challenges such as selecting energy dissipation components for high-head ship lock water conveyance systems, ensuring uniform and stable non-steady flow diversion, and facilitating smooth ship operation within the lock chamber. The ship lock's water conveyance system uses a decentralized water conveyance method. The vertical diversion function is to achieve three-dimensional, synchronous, and equal-quantity decomposition of the water flow into the lock chamber through horizontal partitions (diversion plates) between the diversion piers during normal water conveyance, resulting in upper, lower, front, and rear sections of outflow into the lock chamber, thus achieving momentum balance.

[0005] As can be seen from the above-mentioned existing technologies, most of the diversion structures set on the inner side of the existing water conveyance corridor adopt a single plate structure, which cannot be buffered and adjusted according to the water flow velocity. This makes them prone to loosening and damage under the impact of high-speed water flow, and cannot guarantee long-term limited diversion, thus having certain defects in use. Summary of the Invention

[0006] The purpose of this invention is to provide a double-layer composite water conveyance channel to solve the problem mentioned in the background art that the current double-layer composite water conveyance channels on the market cannot be buffered and adjusted according to the water flow velocity, making them prone to loosening and damage under the impact of high-speed water flow, and unable to guarantee long-term limited diversion.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The double-layer superimposed water conveyance corridor includes interconnected diversion water conveyance corridors and superimposed corridors, and there are two superimposed corridors, which are arranged vertically and vertically in correspondence.

[0009] An installation plate is bolted to the inner wall of the connecting section of the diversion and superimposed water conveyance corridor. A flow guide component is elastically and telescopically connected to the outer side of the installation plate through a buffer mechanism. A replacement wear-resistant plate is bolted to the outer side of the flow guide component. A bladder drive component is installed on the flow guide component and the movable sleeve. A snap-fit ​​component is provided on the flow guide component to assist in fixing the replacement wear-resistant plate. The snap-fit ​​component assists in fixing the replacement wear-resistant plate under the drive of the bladder drive component.

[0010] Preferably, the flow guiding component is located at the port of the two overlapping corridors, and the flow guiding component is arranged in a V-shape. The flow guiding component shields and protects the inner wall of the end corridor of the diversion water conveyance corridor, and at the same time, the flow guiding component diverts and guides the water flow inside the diversion water conveyance corridor.

[0011] Preferably, the buffer mechanism includes a fixed adsorption cylinder fixedly installed on the outside of the mounting plate, and a movable sleeve is telescopically sleeved on the outside of the fixed adsorption cylinder. The movable sleeve is fixedly installed on the outside of the flow guiding component. The fixed adsorption cylinder and the movable sleeve are coaxially arranged, and the fixed adsorption cylinder and the movable sleeve together form an elastic telescopic structure to achieve buffering of the flow guiding component.

[0012] Preferably, a sealing piston block is slidably provided on the inner side of the fixed adsorption cylinder, and two traction steel cables are symmetrically fixedly connected to the outer side of the sealing piston block. The ends of the traction steel cables pass through the fixed adsorption cylinder and are fixedly connected to the inner wall of the movable sleeve. Meanwhile, the inner wall of the movable sleeve is provided with a groove structure for the traction steel cables to slide.

[0013] Preferably, the fixed adsorption cylinder and the sealing piston block are coaxially arranged, and the sealing piston block is interference-slidably installed on the inner wall of the fixed adsorption cylinder. A movable guide rod is fixedly connected to the end of the sealing piston block, and the movable guide rod slides through the end of the fixed adsorption cylinder. During the extension and retraction adjustment of the fixed adsorption cylinder and the movable sleeve, the traction steel cable pulls the sealing piston block to slide inside the fixed adsorption cylinder. A buffer spring is fixedly connected between the sealing piston block and the fixed adsorption cylinder, and the port of the fixed adsorption cylinder is sealed and fitted to the smooth part of the inner wall of the corridor.

[0014] Preferably, the bladder driving assembly includes a rubber-sealed gas storage bladder with the inner wall of the end of the movable sleeve and the end of the movable guide rod located inside the movable sleeve fixedly connected, and the rubber-sealed gas storage bladder is squeezed when the fixed adsorption cylinder and the movable sleeve are adjusted for extension and retraction.

[0015] Preferably, the bladder driving assembly further includes an elastic bladder embedded and fixedly installed inside the tip of the flow guide assembly, and the rubber-sealed gas storage bladder and the elastic bladder are connected by a pipe. The elastic bladder is integrally provided with a cylindrical part, and the flow guide assembly is provided with a hole structure, and the cylindrical part is located inside the hole structure. When the rubber-sealed gas storage bladder is compressed, gas is supplied to the elastic bladder through the pipe to drive the cylindrical part to expand and deform.

[0016] Preferably, an adjusting push rod is telescopically provided in the hole structure opened on the flow guiding component, and the end of the adjusting push rod near the elastic bladder is fixedly connected to the end of the cylindrical part, and the adjusting push rod is pushed to slide along the hole structure on the flow guiding component during the expansion of the cylindrical part.

[0017] Preferably, the outer surface of the flow guide component is uniformly provided with positioning clips of elastic material near the hole structure, and the positioning clips are set at equal angles with respect to the hole structure. The distance between the ends of each positioning clip near the flow guide component is greater than the distance between the other ends. The replacement wear-resistant plate is provided with a positioning through hole, and the positioning clips pass through the positioning through hole. During the sliding of the adjusting push rod, multiple positioning clips are pushed to rotate elastically to achieve auxiliary locking of the replacement wear-resistant plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the double-layer superimposed water conveyance channel can decompose the energy of water flow, reduce the direct impact of high-speed water flow on the gate chamber, ensure the smooth rise / fall of the water level in the gate chamber, and is equipped with a diversion mechanism to avoid the inner wall of the channel being impacted by high-speed water flow during the diversion process, thus ensuring the stability of the diversion. The specific details are as follows.

[0019] 1. This double-layered superimposed water conveyance channel is equipped with a diversion water conveyance channel and a superimposed channel. Through the two superimposed channels, the water flow inside the diversion water conveyance channel can be diverted and transported, the energy of the water flow can be decomposed, the direct impact of high-speed water flow on the gate chamber can be reduced, and the water level in the gate chamber can be ensured to rise / fall steadily.

[0020] 2. This double-layered composite water conveyance channel is equipped with a flow guiding component, a fixed adsorption cylinder, and a movable sleeve. The flow guiding component can block and guide the water flow, effectively diverting the flow and ensuring that the water flow can stably flow into the two composite channels. Furthermore, the elastic expansion and contraction adjustment of the fixed adsorption cylinder and the movable sleeve can effectively improve the stability of the flow guiding component and prevent the flow guiding component from being damaged by the impact force of the water flow.

[0021] Furthermore, a fixed adsorption cylinder and a sealing piston block are also provided. As the fixed adsorption cylinder and the movable sleeve are extended and retracted, the traction steel cable will simultaneously pull the sealing piston block to slide inside the fixed adsorption cylinder, thereby creating negative pressure on the corridor wall at the installation position of the fixed adsorption cylinder and the mounting plate, thus achieving adsorption and fixation. This allows for adaptive adjustment of the installation stability of the mounting plate according to the magnitude of the water flow impact, ensuring the installation stability of the diversion structure.

[0022] 3. This double-layer composite water conveyance channel is equipped with replacement wear-resistant plates and positioning clips. With the extension and retraction adjustment of the fixed adsorption cylinder and the movable sleeve, the movable sleeve, in conjunction with the movable guide rod, can compress the rubber-sealed air storage bladder. This allows the gas in the rubber-sealed air storage bladder to enter the elastic bladder through the pipe. The gas then enters the bladder and, through the expansion of the cylindrical part, pushes the adjusting push rod to move. This allows the positioning clips to assist in positioning the replacement wear-resistant plates through the positioning through holes, ensuring the installation stability of the replacement wear-resistant plates and facilitating subsequent replacement of the replacement wear-resistant plates. This also prevents wear of the flow guiding components from causing eddies in the water flow. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the distribution structure of the diversion and superimposed water conveyance corridors of the present invention;

[0024] Figure 2 This is a schematic diagram of the connection structure between the diversion water conveyance corridor and the superimposed corridor of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the diversion and superimposed water conveyance corridor and the superimposed corridor of the present invention;

[0026] Figure 4 This is a schematic diagram of the installation structure of the flow guiding component of the present invention;

[0027] Figure 5 This is a schematic diagram of the connection structure between the mounting plate and the flow guiding assembly of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the flow guiding component of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle;

[0030] Figure 8 This is a schematic diagram of the connection structure between the flow guiding component and the replacement wear-resistant plate of the present invention.

[0031] In the diagram: 1. Diversion water conveyance channel; 2. Overlapping channel; 3. Mounting plate; 4. Flow guiding assembly; 5. Replacement wear-resistant plate; 6. Fixed adsorption cylinder; 7. Movable sleeve; 8. Sealing piston block; 9. Movable guide rod; 10. Traction cable; 11. Buffer spring; 12. Rubber sealed air storage bladder; 13. Elastic bladder; 14. Columnar part; 15. Adjusting push rod; 16. Positioning clip; 17. Positioning through hole. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Existing water conveyance channels use a single water inlet, which makes the water flow prone to turbulence and cannot ensure the stability of the water surface inside the lock. To solve this technical problem, this example discloses the following technical content. Please refer to [link / reference]. Figures 1-3 As shown; the double-layer superimposed water conveyance corridor includes interconnected diversion water conveyance corridor 1 and superimposed corridor 2, and there are two superimposed corridors 2, which are stacked vertically and correspondingly. The inner wall of the corridor at the connection between the diversion water conveyance corridor 1 and the superimposed corridor 2 is fixed with an installation plate 3 by bolts, and the outer side of the installation plate 3 is elastically connected with a flow guiding component 4 through a buffer mechanism. The flow guiding component 4 is located at the port of the two superimposed corridors 2, and the flow guiding component 4 is set in a V-shape. The flow guiding component 4 shields and protects the inner wall of the end corridor of the diversion water conveyance corridor 1, and at the same time, the flow guiding component 4 diverts and guides the water flow inside the diversion water conveyance corridor 1.

[0034] like Figure 3 As shown, when the water flow in the diversion channel 1 approaches the superimposed channel 2, it will impact the flow guide component 4. At this time, the flow guide component 4 can divert the water flow, so that the water flow enters the interior of the upper and lower superimposed channels 2 respectively, thereby diverting the water flow energy, reducing the direct impact of high-speed water flow on the gate chamber, and ensuring that the water level in the gate chamber rises / falls steadily.

[0035] Example 2: The technical content disclosed in this example is a further improvement based on Example 1. Most existing double-layer composite water conveyance channels employ a fixed installation method for their diversion structures, making them prone to damage and loosening under the impact of large water flows. To further solve this technical problem, this example discloses the following technical content: Figures 3-6 As shown; a flow guiding assembly 4 is elastically and telescopically connected to the outer side of the mounting plate 3 via a buffer mechanism. The buffer mechanism includes a fixed adsorption cylinder 6 fixedly installed on the outer side of the mounting plate 3, and a movable sleeve 7 telescopically sleeved on the outer side of the fixed adsorption cylinder 6. The movable sleeve 7 is fixedly installed on the outer side of the flow guiding assembly 4. The fixed adsorption cylinder 6 and the movable sleeve 7 are coaxially arranged and form an elastic telescopic structure to buffer the flow guiding assembly 4. A sealing piston block 8 is slidably arranged on the inner side of the fixed adsorption cylinder 6, and two traction steel cables 10 are symmetrically and fixedly connected to the outer side of the sealing piston block 8. The traction steel cables 10 pass through the end of the fixed adsorption cylinder 6 and are fixedly connected to... The movable sleeve 7 is attached to the inner wall of the fixed suction cylinder 6, and the inner wall of the movable sleeve 7 is provided with a groove structure for the traction cable 10 to slide. The fixed suction cylinder 6 and the sealing piston block 8 are coaxially arranged, and the sealing piston block 8 is interference-slidably installed on the inner wall of the fixed suction cylinder 6. The end of the sealing piston block 8 is fixedly connected to the movable guide rod 9, and the movable guide rod 9 slides through the end of the fixed suction cylinder 6. During the extension and retraction adjustment of the fixed suction cylinder 6 and the movable sleeve 7, the traction cable 10 pulls the sealing piston block 8 to slide inside the fixed suction cylinder 6. A buffer spring 11 is fixedly connected between the sealing piston block 8 and the fixed suction cylinder 6, and the port of the fixed suction cylinder 6 is sealed and fitted to the smooth part of the inner wall of the corridor.

[0036] like Figures 4-6 As shown, when the flow guiding component 4 is impacted by water flow, it will cause the movable sleeve 7 and the fixed adsorption cylinder 6 to elastically expand and contract. At this time, the buffer spring 11 can effectively buffer the flow guiding component 4 to avoid damage caused by excessive instantaneous force. At the same time, during the expansion and contraction adjustment of the fixed adsorption cylinder 6 and the movable sleeve 7, the movable sleeve 7 will pull the sealing piston block 8 to slide with interference fit on the inner side of the fixed adsorption cylinder 6 through the traction steel cable 10, thereby generating negative pressure between the fixed adsorption cylinder 6 and the inner wall of the corridor where the mounting plate 3 is installed, thereby achieving adsorption and fixation of the mounting plate 3, and further improving the installation stability of the mounting plate 3 under the impact of large water flow.

[0037] Example 3: The technical content disclosed in this example is a further improvement based on Example 2 above. Most existing water conveyance corridors use an integrated structure for their diversion structures, which makes them prone to wear under the impact of high-speed water flow and sediment, leading to turbulent water flow. To further solve this technical problem, this example discloses the following technical content: Figures 6-8 As shown; a replacement wear-resistant plate 5 is fixedly connected to the outside of the flow guide assembly 4 by bolts. A bladder driving assembly is installed on the flow guide assembly 4 and the movable sleeve 7. A snap-fit ​​assembly is provided on the flow guide assembly 4 to assist in fixing the replacement wear-resistant plate 5. The snap-fit ​​assembly assists in fixing the replacement wear-resistant plate 5 under the drive of the bladder driving assembly. The bladder driving assembly includes a rubber-sealed gas storage bladder 12 fixedly connected between the inner wall of the end of the movable sleeve 7 and the end of the movable guide rod 9 located inside the movable sleeve 7. When the fixed adsorption cylinder 6 and the movable sleeve 7 are adjusted by extension and retraction, the rubber-sealed gas storage bladder 12 is squeezed. The bladder driving assembly also includes an elastic bladder 13 embedded and fixedly installed inside the tip of the flow guide assembly 4. The rubber-sealed gas storage bladder 12 and the elastic bladder 13 are connected by a pipe. A columnar part 14 is integrally provided on the elastic bladder 13. At the same time, the flow guide assembly 4 has a hole structure, and the columnar part 14 is located in the hole. Inside the cavity structure, the rubber-sealed air-storage bladder 12, after being pressurized, supplies air to the elastic bladder 13 through a pipe to drive the cylindrical part 14 to expand and deform. An adjusting push rod 15 is telescopically installed in the hole structure on the flow guide component 4, and one end of the adjusting push rod 15 near the elastic bladder 13 is fixedly connected to the end of the cylindrical part 14. During the expansion of the cylindrical part 14, the adjusting push rod 15 is pushed to slide along the hole structure on the flow guide component 4. Elastic positioning clips 16 are uniformly arranged on the outer surface of the flow guide component 4 near the hole structure. The positioning clips 16 are set at equal angles with respect to the hole structure, and the distance between the ends of each positioning clip 16 near the flow guide component 4 is greater than the distance between the other ends. The replacement wear-resistant plate 5 is provided with a positioning through hole 17, and the positioning clip 16 passes through the positioning through hole 17. During the sliding of the adjusting push rod 15, multiple positioning clips 16 are pushed to rotate elastically to achieve auxiliary locking of the replacement wear-resistant plate 5.

[0038] like Figure 7 and Figure 8 As shown, the replaceable wear-resistant plate 5 can protect the surface of the flow guide assembly 4. During the water flow transportation process, when the fixed adsorption cylinder 6 and the movable sleeve 7 are adjusted for extension and retraction, the movable sleeve 7 will cooperate with the movable guide rod 9 to squeeze the rubber sealing air storage bladder 12 between them, so that some of the gas in the rubber sealing air storage bladder 12 enters the elastic bladder 13 through the pipe, thereby causing the cylindrical part 14 on the elastic bladder 13 to expand and deform. The deformed cylindrical part 14 will push the adjusting push rod 15 to move synchronously, so that the adjusting push rod 15 will fit against the outer wall of the positioning clip 16 during the movement, and push multiple positioning clips 16 to elastically deform. The deformed positioning clips 16 can replicate and position the replaceable wear-resistant plate 5 through the positioning through hole 17, so as to prevent the replaceable wear-resistant plate 5 from falling off due to the impact of the lateral water flow.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A double-layer superimposed water conveyance corridor, comprising a diversion water conveyance corridor (1) and a superimposed corridor (2) that are interconnected, and two superimposed corridors (2) are provided, and the two superimposed corridors (2) are superimposed and correspondingly set up; Its features are: The inner wall of the channel connecting the diversion channel (1) and the superimposed channel (2) is fixedly installed with an installation plate (3) by bolts. The outer side of the installation plate (3) is elastically connected to a flow guide component (4) through a buffer mechanism. The outer side of the flow guide component (4) is fixedly connected with a replacement wear-resistant plate (5) by bolts. The flow guide component (4) and the movable sleeve (7) are equipped with a bladder driving component. The flow guide component (4) is provided with a snap-fit ​​component for auxiliary fixing of the replacement wear-resistant plate (5). The snap-fit ​​component is driven by the bladder driving component to auxiliary fix the replacement wear-resistant plate (5). The buffer mechanism includes a fixed adsorption cylinder (6) fixedly installed on the outside of the mounting plate (3), and a movable sleeve (7) is telescopically sleeved on the outside of the fixed adsorption cylinder (6). The movable sleeve (7) is fixedly installed on the outside of the flow guiding component (4). The fixed adsorption cylinder (6) and the movable sleeve (7) are coaxially arranged, and the fixed adsorption cylinder (6) and the movable sleeve (7) together form an elastic telescopic structure to achieve buffering of the flow guiding component (4). The bladder driving assembly includes a rubber-sealed gas storage bladder (12) fixedly connected between the inner wall of the end of the movable sleeve (7) and one end of the movable guide rod (9) located inside the movable sleeve (7), and the rubber-sealed gas storage bladder (12) is squeezed when the fixed adsorption cylinder (6) and the movable sleeve (7) are extended and retracted. The bladder driving assembly also includes an elastic bladder (13) embedded and fixedly installed inside the tip of the flow guide assembly (4), and the rubber-sealed gas storage bladder (12) and the elastic bladder (13) are connected by a pipe, and a columnar part (14) is integrally provided on the elastic bladder (13). Meanwhile, the flow guide assembly (4) is provided with a hole structure, and the columnar part (14) is located inside the hole structure. After the rubber-sealed gas storage bladder (12) is compressed, gas is supplied to the elastic bladder (13) through the pipe to drive the columnar part (14) to expand and deform. An adjusting push rod (15) is telescopically installed in the hole structure opened on the flow guide assembly (4), and one end of the adjusting push rod (15) near the elastic bladder (13) is fixedly connected to the end of the cylindrical part (14), and the cylindrical part (14) pushes the adjusting push rod (15) to slide along the hole structure on the flow guide assembly (4) during the expansion process. The outer surface of the flow guide component (4) is uniformly provided with positioning clips (16) of elastic material near the hole structure. The positioning clips (16) are set at equal angles with respect to the hole structure. The distance between the ends of each positioning clip (16) near the flow guide component (4) is greater than the distance between the other ends. The replacement wear-resistant plate (5) is provided with a positioning through hole (17). The positioning clips (16) pass through the positioning through hole (17). During the sliding process of the adjusting push rod (15), it pushes multiple positioning clips (16) to perform elastic rotation to achieve auxiliary locking of the replacement wear-resistant plate (5).

2. The double-layer composite water conveyance corridor according to claim 1, characterized in that: The flow guiding component (4) is located at the port of the two overlapping corridors (2), and the flow guiding component (4) is set in a V-shaped structure. The flow guiding component (4) shields and protects the inner wall of the end corridor of the diversion water conveyance corridor (1), and at the same time, the flow guiding component (4) diverts and guides the water flow inside the diversion water conveyance corridor (1).

3. The double-layer composite water conveyance corridor according to claim 1, characterized in that: A sealing piston block (8) is slidably provided on the inner side of the fixed adsorption cylinder (6), and two traction steel cables (10) are symmetrically fixedly connected to the outer side of the sealing piston block (8). The end of the traction steel cable (10) passes through the fixed adsorption cylinder (6) and is fixedly connected to the inner wall of the movable sleeve (7). At the same time, the inner wall of the movable sleeve (7) is provided with a groove structure for the traction steel cable (10) to slide.

4. The double-layer composite water conveyance corridor according to claim 3, characterized in that: The fixed adsorption cylinder (6) and the sealing piston block (8) are coaxially arranged, and the sealing piston block (8) is interference-slidably installed on the inner wall of the fixed adsorption cylinder (6). The end of the sealing piston block (8) is fixedly connected to a movable guide rod (9), and the movable guide rod (9) slides through the end of the fixed adsorption cylinder (6). During the extension and retraction adjustment of the fixed adsorption cylinder (6) and the movable sleeve (7), the traction cable (10) pulls the sealing piston block (8) to slide inside the fixed adsorption cylinder (6). A buffer spring (11) is fixedly connected between the sealing piston block (8) and the fixed adsorption cylinder (6), and the port of the fixed adsorption cylinder (6) is sealed and fitted to the smooth part of the inner wall of the corridor.

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