Water conservancy pipeline for water conservancy project
By designing sand removal devices in water conservancy pipelines, and using sand blocking parts and sand collection box systems to intercept and collect silt and sand accumulation, the problem of silt accumulation and blockage is solved, and a convenient cleaning process and efficient sand removal effect is achieved.
Patent Information
- Application Number
- CN202420031543.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-05
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-05
AI Technical Summary
The accumulation of sediment in water conservancy pipelines leads to blockage, and the cleaning process of the existing technology is cumbersome and inconvenient to operation.
A water conservancy pipeline is designed with a built-in sand removal device, including sand blocking parts, sandboxes, partitions, covers, elastic parts, sand pushing parts and sand cleaning parts, and sand blocking parts of different particle sizes are intercepted through sand blocking parts. The sand discharge mouth and the sand leakage mouth are used to collect the sediment into the sand collection box for easier subsequent cleaning and reduce the probability of blockage.
It effectively reduces the probability of sediment accumulation and blocking water conservancy pipelines, improves sand removal efficiency and operational convenience, and reduces the impact on the smooth passage of water flow.
Smart Images
Figure CN222209533U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of water conservancy projects, and in particular to a water conservancy pipeline used in water conservancy projects. Background Art
[0002] Hydraulic pipelines play an important role in water conservancy projects. They are used to transport water or other liquids. These pipelines need to have certain pressure resistance and earthquake resistance to ensure the safety and stability of the project.
[0003] Usually, water conservancy pipelines are formed by connecting multiple water conservancy pipes. Common connection methods include flange connection, welding connection, socket connection, etc. Choosing a suitable connection method can ensure the sealing and stability of the pipeline system.
[0004] During use, water may carry mud and sand into the water conservancy pipeline. Due to the heavy weight of mud and sand, the mud and sand will accumulate inside the water conservancy pipeline after moving a certain distance along the water conservancy pipeline. If the mud and sand inside the water conservancy pipeline cannot be cleaned in time, it will easily cause blockage of the water conservancy pipeline.
[0005] In the prior art, when a water conservancy pipe in a water conservancy pipeline is blocked due to sediment accumulation, it is necessary to release the connection between the corresponding water conservancy pipes and then clean up the accumulated sediment, which is a troublesome operation. Utility Model Content
[0006] The present application provides a water conservancy pipeline for a water conservancy project, which can facilitate workers to clean up the silt accumulated inside the water conservancy pipeline, thereby reducing the probability of silt accumulation blocking the water conservancy pipeline and affecting the normal operation of the water conservancy project.
[0007] The present application provides a water conservancy pipeline for a water conservancy project, which adopts the following technical solution:
[0008] A water conservancy pipeline for a water conservancy project comprises a pipe body and a sand removal device; the sand removal device comprises a plurality of sand intercepting members and a plurality of sand collecting boxes;
[0009] The tube body has a cavity inside; the sand-trapping member is arranged on the tube body and located at the bottom of the cavity, and a plurality of the sand-trapping members are arranged at intervals along the length direction of the tube body; the sand-trapping member has a plurality of sand-trapping holes, the diameters of the sand-trapping holes on the plurality of the sand-trapping members are different, and the diameters of the sand-trapping holes of the plurality of the sand-trapping members gradually decrease along the water flow direction;
[0010] The bottom of the tube body is provided with a plurality of sand discharge ports, the plurality of sand discharge ports correspond to a plurality of sand blocking members one by one, the sand discharge ports are communicated with the cavity, and the silt intercepted by the sand blocking members can be discharged through the corresponding sand discharge ports;
[0011] The sand collecting box is arranged at the bottom of the tube body, and a plurality of the sand discharge ports are respectively communicated with a plurality of the sand collecting boxes.
[0012] By adopting the above technical scheme, after the sediment enters the water conservancy pipeline with the water flow, the sediment moving at the bottom of the cavity under the action of its own gravity can be intercepted by the sand-blocking parts. After the sediment of different particle sizes is intercepted by different sand-blocking parts with the water flow, it can be collected in the sand collecting box through the sand discharge port. The staff can clean the sediment in the sand collecting box within a certain period of time, thereby reducing the probability of sediment accumulation blocking the water conservancy pipeline and affecting the normal operation of the water conservancy project, and the operation is convenient.
[0013] Optionally, the sand removal device further comprises a partition, which is arranged in the cavity and parallel to the water flow direction; both sides of the partition are connected to the cavity wall of the cavity, and one end of a plurality of the sand retaining members away from the sand collecting box is connected to the partition.
[0014] By adopting the above technical solution, the baffle can guide the water flow to pass through the water conservancy pipeline quickly, reducing the impact of the sand retaining device on the water flow velocity during the sand retaining process; at the same time, it can reduce the probability of the mud between the sand retaining pieces being disturbed by the water flow and moving around the sand retaining pieces with the water flow, thereby improving the sand removal effect of the sand removal device.
[0015] Optionally, the sand removal device further includes a plurality of cover plates, the plurality of cover plates correspond one-to-one to the plurality of sand discharge ports, the cover plates are slidably connected to the tube body, and the sliding of the cover plates can control the opening and closing of the sand discharge ports.
[0016] By adopting the above technical solution, controlling the opening and closing of the sand discharge port can facilitate the staff to clean the mud and sand in the sand collecting box, and reduce the probability of water entering through the sand discharge port during the cleaning of the sand collecting box.
[0017] Optionally, the cover plate is connected to one end of the corresponding sand-trapping member close to the sand-collecting box, and the cover plate is located on a side of the corresponding sand-trapping member close to the upstream of the water flow; the sand-trapping member is slidably connected to the partition, and the sliding direction of the sand-trapping member is parallel to the sliding direction of the cover plate;
[0018] The sand removal device also includes a plurality of elastic parts. A sand leakage opening is opened on the cover plate. The elastic parts can drive the cover plate and the corresponding sand retaining parts to slide to the extreme position in the direction close to the upstream of the water flow and maintain it. At this time, the cover plate seals the sand discharge opening; when the cover plate overcomes the force of the elastic parts and slides to the extreme position along the water flow direction, the sand leakage opening is communicated with the corresponding sand discharge opening.
[0019] By adopting the above technical scheme, the cover plate can slide according to the sand intercepting situation of the corresponding sand intercepting piece. When the sand intercepting piece intercepts more sand, the force of the water flow on the sand intercepting piece increases, and the cover plate can slide with the sand intercepting piece to connect the sand leakage port with the sand discharge port. At this time, the sand intercepted by the sand intercepting piece can enter the sand collecting box; when the sand intercepting piece intercepts less sand, the force of the water flow on the sand intercepting piece is smaller, and the elastic piece drives the cover plate to keep the sand discharge port sealed, so that the sand intercepting piece maintains the effect of intercepting sand.
[0020] Optionally, the sand removing device further comprises a plurality of sand pushing members, and the plurality of sand pushing members correspond one to one with the plurality of sand blocking members; the sand pushing members are located on a side of the sand blocking member away from the corresponding cover plate, and the sand pushing members are connected to the sand blocking members.
[0021] By adopting the above technical solution, when the sand retaining member slides along the direction of water flow under the force of water flow, the sand pushing member can push the accumulated mud and sand toward another sand retaining member, thereby further improving the sand retaining effect of the sand retaining member.
[0022] Optionally, the sand removal device further comprises a plurality of sand clearing pieces, and the plurality of sand clearing pieces correspond one to one with the plurality of sand pushing pieces; the sand clearing pieces are arranged at one end of the sand pushing pieces away from the corresponding sand blocking pieces, and the sand clearing pieces are in contact with and abut against the cavity wall at the bottom of the cavity.
[0023] By adopting the above technical solution, when the sand retaining member slides along the direction of water flow under the force of water flow, the sand cleaning member can clean the mud and sand attached to the cavity wall at the bottom of the cavity, thereby further improving the sand removal efficiency of the sand removal device.
[0024] Optionally, several of the sand retaining members are connected to each other.
[0025] By adopting the above technical solution, the sliding of the plurality of sand-trapping members can be made in the same direction and synchronously, so that the plurality of sand-trapping members can slide along the direction of water flow and the intercepted mud and sand can enter the sand collecting box.
[0026] Optionally, the sand-trapping member is arranged obliquely, and an end of the sand-trapping member close to the upstream of the water flow is an inclined upper end.
[0027] By adopting the above technical solution, the interception effect of the sand retaining device on the sediment can be further improved, and the probability of the sediment bypassing the sand retaining device with the water flow can be further reduced.
[0028] Optionally, the sand removal device is arranged at one end of the pipe body close to the upstream of the water flow.
[0029] By adopting the above technical solution, the sand removal device can remove the sand after the sand enters the water conservancy pipeline with the water flow, thereby reducing the probability of sand accumulating in the cavity away from the sand removal device.
[0030] In summary, the present application includes at least one of the following beneficial effects:
[0031] 1. It can clean the silt accumulated inside the water conservancy pipeline and collect it in the sand collecting box, which is convenient for the staff to clean the silt later, thereby reducing the probability of silt accumulation blocking the water conservancy pipeline and affecting the normal operation of the water conservancy project;
[0032] 2. It can effectively reduce the probability of sediment accumulation inside the water conservancy pipeline, and reduce the impact of sediment accumulation and the setting of sand removal devices on the smooth flow of water through the water conservancy pipeline. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1 This is a schematic diagram of the structure of a water conservancy pipeline used in a water conservancy project in Example 1;
[0034] Figure 2 is a cross-sectional view of a water conservancy pipeline used in a water conservancy project in Example 1;
[0035] Figure 3 yes Figure 2 The enlarged view of point A in the middle;
[0036] Figure 4 yes Figure 3 Schematic diagram when the middle sand leakage port and the sand discharge port are connected;
[0037] Figure 5 It is a cross-sectional view of a water conservancy pipeline used in a water conservancy project in Example 2.
[0038] Explanation of the accompanying reference numerals: 1. pipe body; 11. cavity; 12. sand discharge port; 2. sand removal device; 3. sand blocking member; 31. sand blocking hole; 4. cover plate; 41. sand leakage port; 5. elastic member; 6. sand collecting box; 7. partition plate; 8. sand pushing member; 81. sand pushing part; 9. sand cleaning member; 10. connecting member. DETAILED DESCRIPTION
[0039] The following is combined with Figure 1-5 This application is described in further detail.
[0040] Embodiment 1:
[0041] The embodiment of the present application discloses a water conservancy pipeline used in a water conservancy project. After a plurality of water conservancy pipelines are connected, a water conservancy pipeline is formed for water flow to pass through, thereby meeting the water transportation demand in the water conservancy project.
[0042] Reference Figure 1 and Figure 2The water conservancy pipeline includes a pipe body 1 and a sand removal device 2. In this embodiment, the pipe body 1 is preferably a round pipe, and the pipe body 1 is used in a horizontal position in the axial direction; the water preferably flows in the pipe body 1 along the axial direction of the pipe body 1, and the sand removal device 2 is preferably installed on the pipe body 1 at one end close to the upstream position of the water flow, so that the sand removal device 2 can intercept and remove the mud and sand mixed in the water flow just after the water flow enters the pipe body 1.
[0043] The interior of the tube body 1 has a cavity 11 for water to flow through. The cavity 11 is cylindrical in shape, and the axis of the cavity 11 coincides with the axis of the tube body 1 .
[0044] Reference Figure 2 and Figure 3 The sand removal device 2 includes a plurality of sand retaining members 3, a plurality of cover plates 4, a plurality of elastic members 5, a plurality of sand collecting boxes 6 and a partition plate 7.
[0045] The partition 7 is a rectangular plate-shaped structure as a whole. The partition 7 is installed in the cavity 11 in a horizontal state. Both sides of the partition 7 in the width direction are fixedly connected to the cavity wall of the cavity 11. The partition 7 divides the cavity 11 into two spaces, and the space above the partition 7 is larger than the space below the partition 7.
[0046] Several sand-trapping members 3 are installed in the cavity 11 and are located below the partition 7. The sand-trapping members 3 have several sand-trapping holes 31 for intercepting silt, and the diameters of the sand-trapping holes 31 on the several sand-trapping members 3 are different. Several sand-trapping members 3 are evenly spaced along the radial direction of the tube body 1 below the partition 7, and the diameters of the sand-trapping holes 31 on the several sand-trapping members 3 gradually decrease along the direction of the water flow, that is, the interception effect of the several sand-trapping members 3 on silt gradually increases along the direction of the water flow. In this embodiment, for the convenience of introduction, it is preferred that the sand removal device 2 includes two sand-trapping members 3; in other embodiments, the sand removal device 2 may also include a larger number of sand-trapping members 3.
[0047] Furthermore, one end of the sand trap 3 close to the partition 7 is slidably connected to the partition 7, and the sliding direction of the sand trap 3 is parallel to the axial direction of the tube body 1; the other peripheral sides of the sand trap 3 are in contact with the cavity wall at the bottom of the cavity 11.
[0048] Furthermore, the sand retaining member 3 is installed at an angle below the partition 7, and the end of the sand retaining member 3 close to the partition 7 is the inclined upper end. After the silt is intercepted by the contact with the sand retaining member 3 with the water flow, the water flow will flush the intercepted silt in the process of passing through the sand retaining member 3, causing it to gather at a position close to the inclined lower end of the sand retaining member 3.
[0049] The plurality of cover plates 4 correspond to the plurality of sand retaining members 3 one by one, so in this embodiment, the sand removing device 2 preferably includes two cover plates 4 in total.
[0050] The cover plate 4 is an arc-shaped plate structure as a whole, one end of the cover plate 4 in the length direction is fixedly connected to the inclined lower end of the sand trap 3, the cover plate 4 is located on the side of the corresponding sand trap 3 close to the upstream of the water flow, and the arc surface of the cover plate 4 fits against the cavity wall at the bottom of the cavity 11. The cover plate 4 can slide relative to the tube body 1 as the sand trap 3 slides, and its arc surface can keep fitting against the cavity wall at the bottom of the cavity 11 during the sliding process of the cover plate 4.
[0051] A sand leakage opening 41 for sand to pass through is provided at one end of the cover plate 4 close to the corresponding sand trap 3 , and the sand intercepted by the sand trap 3 can enter the sand leakage opening 41 on the corresponding cover plate 4 .
[0052] The bottom of the pipe body 1 is provided with a plurality of sand discharge ports 12 for discharging mud and sand. The plurality of sand discharge ports 12 correspond to the plurality of sand retaining members 3 one by one. Therefore, in this embodiment, preferably, the pipe body 1 is provided with two sand discharge ports 12 in total.
[0053] Reference Figure 3 and Figure 4 , the sand outlet 12 is connected to the cavity 11, and the size of the sand outlet 12 is preferably the same as the size of the sand leakage port 41. The cover plate 4 is limited in the process of sliding relative to the tube body 1 along with the sand retaining member 3. When the sand retaining member 3 slides to the extreme position along the water flow direction, the sand leakage port 41 on the cover plate 4 will be completely connected with the corresponding sand outlet 12; when the sand retaining member 3 slides to the extreme position in the direction of the water flow upstream, the sand leakage port 41 on the cover plate 4 will be misaligned with the corresponding sand outlet 12, that is, the cover plate 4 will cover the sand outlet 12 above the sand outlet 12 to prevent water from flowing out through the sand outlet 12.
[0054] A plurality of elastic members 5 are installed inside the partition 7, and the two ends of the elastic member 5 are respectively fixedly connected to the partition 7 and the sand trap 3, and the elastic member 5 can drive the sand trap 3 to slide to the limit position relative to the partition 7 toward the upstream of the water flow and maintain it. In this embodiment, the elastic member 5 is preferably a compression spring.
[0055] When the silt intercepted by the sand trap 3 blocks the several sand trap holes 31 on the sand trap 3 to a certain extent, the force of the water flow on the sand trap 3 can drive it to slide to the extreme position along the water flow direction. At this time, the silt intercepted by the sand trap 3 can be discharged through the sand leakage port 41 and the sand discharge port 12 successively, and the water flow in contact with the sand trap 3 can also flow out through the sand leakage port 41 and the sand discharge port 12 under the guidance of the sand trap 3. At this time, the water flow flushes the surface of the sand trap 3 and can clear the silt that forms a blockage on the sand trap 3; when the silt intercepted by the sand trap 3 does not form a blockage or the degree of blockage of the sand trap hole 31 is small, the water flow can still flow through the sand trap hole 31 smoothly, and the cover plate 4 is still in the state of covering the corresponding sand discharge port 12.
[0056] A number of sand collecting boxes 6 correspond to a number of sand retaining members 3 one by one, so a number of sand collecting boxes 6 also correspond to a number of sand discharge ports 12 one by one. The sand collecting box 6 is fixedly mounted at the bottom of the tube body 1, and the sand discharge port 12 is communicated with the interior of the sand collecting box 6. When the silt is discharged from the sand discharge port 12, the silt will enter the interior of the sand collecting box 6 for collection; when the cover plate 4 is in a state of sealing the corresponding sand discharge port 12, it is convenient for the staff to clean the silt collected in the silt box. In this embodiment, the silt box is preferably an openable and closable box body, and the silt can be cleaned after the box body is opened. Since this is a common prior art, it will not be described in detail here, and it is only briefly shown in the accompanying drawings.
[0057] Furthermore, the sand removing device 2 also includes a plurality of sand pushing members 8 and a plurality of sand cleaning members 9 .
[0058] The plurality of sand pushing members 8 correspond one to one to the plurality of sand blocking members 3 , so in this embodiment, the sand removing device 2 preferably includes two sand pushing members 8 in total.
[0059] One end of the sand pushing member 8 is fixedly connected to the sand blocking member 3, and the sand pushing member 8 is located on one side of the corresponding sand blocking member 3 along the water flow direction. The sand pushing member 8 has a sand pushing portion 81 at one end away from the sand blocking member 3, and the end face of the sand pushing portion 81 away from the sand blocking member 3 is perpendicular to the axis of the tube body 1. The sand pushing member 8 moves with the sliding of the sand blocking member 3. When the sand blocking member 3 slides along the water flow direction to drive the sand pushing member 8 to move, the sand pushing member 8 can drive the mud and sand in front of its moving direction to move along the water flow direction, thereby reducing mud and sand accumulation.
[0060] When the sand retaining member 3 slides to the extreme position toward the upstream direction of the water flow, the sand pushing member 8 is located on the side of the corresponding sand discharge outlet 12 close to the upstream of the water flow; when the sand retaining member 3 slides to the extreme position along the water flow direction, the sand pushing member 8 is located on the side of the corresponding sand discharge outlet 12 away from the upstream of the water flow.
[0061] The plurality of sand clearing members 9 correspond one to one to the plurality of sand pushing members 8 , so in this embodiment, the sand removing device 2 preferably includes two sand clearing members 9 in total.
[0062] The sand cleaning member 9 is fixedly mounted on the end of the sand pushing member 8 away from the corresponding sand blocking member 3 and located at the end of the sand pushing member 8 close to the bottom of the tube body 1. The sand cleaning member 9 is elastic and fits against the cavity wall at the bottom of the cavity 11. In this embodiment, the sand cleaning member 9 is preferably made of rubber material.
[0063] As the sand cleaning member 9 slides and moves along with the sand retaining member 3, the sand cleaning member 9 can clean the silt attached to the bottom wall of the cavity 11, so that the silt is separated from the wall of the cavity 11, making it easier for the silt to move along with the water flow and be intercepted by the sand retaining member 3, and finally discharged into the sand collecting box 6 for collection.
[0064] The implementation principle of a water conservancy project using a water conservancy pipeline in the embodiment of the present application is as follows:
[0065] After the water flows into the water conservancy pipeline, the silt mixed in the water flows will contact with several silt retaining members 3 successively under the action of its own gravity. The silt retaining members 3 intercept the silt of different particle sizes and make the silt accumulate on the corresponding cover plate 4; when the silt intercepted by the silt retaining member 3 exceeds a certain amount and affects the water flow through the silt retaining member 3, the force of the water flow on the silt retaining member 3 will drive the silt retaining member 3 to overcome the force of several elastic members 5 and slide along the direction of the water flow until the sand leakage port 41 on the cover plate 4 is connected with the sand discharge port 12 on the pipe body 1. At this time, the silt accumulated on the cover plate 4 can be discharged to the sand collecting box 6 for collection; at the same time, during the sliding process of the silt retaining member 3, the sand pushing member 8 and the sand cleaning member 9 can effectively reduce the probability of silt accumulation at the bottom of the cavity 11, promote the silt to move with the water flow and contact with several silt retaining members 3, so that the silt is more fully intercepted by several silt retaining members 3;
[0066] When a certain amount of silt is collected in the sand collecting box 6 , the staff can clean the silt in the sand collecting box 6 when the cover plate 4 is in a state of covering the sand discharge port 12 .
[0067] Embodiment 2:
[0068] Reference Figure 2 and Figure 5 The difference between this embodiment and embodiment 1 lies in the correlation between the sliding of the plurality of sand retaining members 3 relative to the partition 7. In embodiment 1, the sliding processes of the plurality of sand retaining members 3 relative to the partition 7 are relatively independent; whereas in embodiment 2, the sliding processes of the plurality of sand retaining members 3 relative to the partition 7 are in the same direction and synchronously.
[0069] Reference Figure 5 The inclined upper ends of several sand-trapping members 3 are fixedly connected by connecting members 10. At this time, the amount of silt intercepted by one of the several sand-trapping members 3 exceeds a certain amount, resulting in an increase in the force acting on it when the water flows through. At this time, the force of the water flow can drive the several sand-trapping members 3 to slide synchronously along the direction of the water flow, and finally the silt intercepted by the several sand-trapping members 3 can be discharged through the corresponding sand leakage ports 41 and the sand discharge ports 12 to the corresponding sand collecting boxes 6 for collection, which can increase the frequency of the sand removal device 2 cleaning the silt inside the pipe body 1, thereby improving the sand removal effect of the sand removal device 2 on the pipe body 1.
[0070] The implementation principle of a water conservancy project using a water conservancy pipeline in the embodiment of the present application is as follows:
[0071] Only when the amount of sand intercepted by one of the several sand-trapping members 3 exceeds a certain amount, resulting in an increase in the force of the water flow on it, the force of the water flow can drive the several sand-trapping members 3 to slide synchronously along the direction of the water flow, and finally the sand accumulated on the several cover plates 4 can be collected in the corresponding sand collecting boxes 6 through the corresponding sand leakage ports 41 and the sand discharge ports 12, thereby improving the efficiency of the sand removal device 2 in removing the sand in the pipe body 1.
[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A water conservancy pipeline for a water conservancy project, characterized in that: It comprises a pipe body (1) and a sand removal device (2); the sand removal device (2) comprises a plurality of sand retaining members (3) and a plurality of sand collecting boxes (6); The tube body (1) has a cavity (11) inside; the sand-trapping member (3) is arranged on the tube body (1) and is located at the bottom of the cavity (11), and a plurality of the sand-trapping members (3) are arranged at intervals along the length direction of the tube body (1); the sand-trapping member (3) has a plurality of sand-trapping holes (31), the diameters of the sand-trapping holes (31) on the plurality of the sand-trapping members (3) are different, and the diameters of the sand-trapping holes (31) of the plurality of the sand-trapping members (3) gradually decrease along the water flow direction; The bottom of the tube body (1) is provided with a plurality of sand discharge openings (12), the plurality of sand discharge openings (12) corresponding to the plurality of sand retaining members (3) one by one, the sand discharge openings (12) communicating with the cavity (11), and the silt retained by the sand retaining members (3) can be discharged through the corresponding sand discharge openings (12); The sand collecting box (6) is arranged at the bottom of the tube body (1), and the plurality of sand discharge ports (12) are respectively connected to the plurality of sand collecting boxes (6).
2. A water conservancy pipeline for water conservancy projects according to claim 1, characterized in that: The sand removal device (2) further comprises a baffle (7), wherein the baffle (7) is arranged in the cavity (11) and parallel to the water flow direction; both sides of the baffle (7) are connected to the cavity wall of the cavity (11), and one end of a plurality of the sand retaining members (3) away from the sand collecting box (6) is connected to the baffle (7).
3. A water conservancy pipeline for water conservancy projects according to claim 2, characterized in that: The sand removal device (2) further comprises a plurality of cover plates (4), the plurality of cover plates (4) corresponding one to one with the plurality of sand discharge ports (12), the cover plates (4) being slidably connected to the pipe body (1), and the sliding of the cover plates (4) can control the opening and closing of the sand discharge ports (12).
4. A water conservancy pipeline for water conservancy projects according to claim 3, characterized in that: The cover plate (4) is connected to one end of the corresponding sand-trapping member (3) close to the sand-collecting box (6), and the cover plate (4) is located on a side of the corresponding sand-trapping member (3) close to the upstream of the water flow; the sand-trapping member (3) is slidably connected to the partition plate (7), and the sliding direction of the sand-trapping member (3) is parallel to the sliding direction of the cover plate (4); The sand removal device (2) further comprises a plurality of elastic members (5), the cover plate (4) being provided with a sand leakage opening (41), the elastic member (5) being capable of driving the cover plate (4) and the corresponding sand retaining member (3) to slide to an extreme position in a direction close to the upstream of the water flow and to maintain the position, at which time the cover plate (4) seals the sand discharge opening (12); when the cover plate (4) overcomes the action of the elastic member (5) and slides to an extreme position in the direction of the water flow, the sand leakage opening (41) is communicated with the corresponding sand discharge opening (12).
5. A water conservancy pipeline for water conservancy projects according to claim 4, characterized in that: The sand removing device (2) further comprises a plurality of sand pushing members (8), wherein the plurality of sand pushing members (8) correspond one to one with the plurality of sand blocking members (3); the sand pushing members (8) are located on a side of the sand blocking member (3) away from the corresponding cover plate (4), and the sand pushing members (8) are connected to the sand blocking members (3).
6. A water conservancy pipeline for water conservancy projects according to claim 5, characterized in that: The sand removing device (2) further comprises a plurality of sand clearing members (9), wherein the plurality of sand clearing members (9) correspond one to one with the plurality of sand pushing members (8); the sand clearing members (9) are arranged at one end of the sand pushing members (8) away from the corresponding sand blocking members (3), and the sand clearing members (9) are in contact with and abut against the cavity wall at the bottom of the cavity (11).
7. A water conservancy pipeline for water conservancy projects according to claim 4, characterized in that: A plurality of the sand retaining members (3) are connected to each other.
8. The hydraulic pipeline for hydraulic engineering according to claim 1, characterized in that: The sand retaining member (3) is arranged obliquely, and the end of the sand retaining member (3) close to the upstream of the water flow is the inclined upper end.
9. The hydraulic pipeline for hydraulic engineering according to claim 1, characterized in that: The sand removal device (2) is arranged at an end of the pipe body (1) close to the upstream of the water flow.