Power plant building construction dewatering structure

Abstract

The utility model provides a power plant building construction dewatering structure which comprises a coil pipe, an aluminum pipe is vertically arranged in the middle of the interior of the coil pipe, an upper layer filter plate is arranged on the aluminum pipe in a penetrating mode, and the bottom of the aluminum pipe is fixedly connected with a sludge collecting net cylinder through a fixing plate. According to the utility model, the lower-layer filter screen plate, the outer peripheral wall of the sludge collecting net cylinder and the inner peripheral wall of the ring cylinder are arranged to be of a clearance fit structure, so that the lower-layer filter screen plate and the sludge collecting net cylinder can be smoothly lifted up along with the aluminum pipe and then separated from the ring cylinder, and the sewage cleaning is more convenient; a sealing ring with an expansion function is arranged in a gap formed among the lower-layer filter screen plate, the sludge collecting net cylinder and the inner circumferential wall of the ring cylinder, so that filtering leakage can be effectively avoided, and meanwhile, the sealing ring has a contraction function, so that the operation of separating the lower-layer filter screen plate and the sludge collecting net cylinder from the ring cylinder is not influenced; compared with the prior art, the cleaning device has the advantage that dirt in the ring cylinder can be cleaned more conveniently and quickly.

Description

Technical Field

[0001] This utility model relates to the field of power plant construction technology, specifically a dewatering structure for power plant construction. Background Technology

[0002] During construction, in order to increase the stability of slopes and slope bottoms, prevent the loss of soil particles on slopes or at the bottom of foundation pits, reduce soil moisture content, effectively improve the physical and mechanical properties of soil, increase the degree of soil consolidation, and increase the shear strength of the foundation, it is necessary to use foundation pit dewatering wells to remove seepage water from the slope and base of the foundation pit, and keep the bottom of the foundation pit dry to facilitate construction.

[0003] Utility model CN212175831U discloses a dewatering structure for the construction of a thermal power plant, including a foundation pit. A dewatering well is vertically opened in the foundation pit, and a ring pipe is inserted into the inner cavity of the dewatering well. A concrete ring pad is poured on the foundation pit at the upper end of the dewatering well. A fixing aluminum ring is overlapped on the upper part of the concrete ring pad. An upper filter screen is horizontally fixed to the inner side of the fixing aluminum ring. This utility model uses an upper filter screen to filter large particles of sand and gravel from sewage and to protect the upper end of the dewatering well, ensuring construction safety. Furthermore, a lower filter screen can further filter fine sand and gravel from sewage, preventing blockage of the water pump. A sludge collection cylinder can collect sludge, allowing for easy and efficient cleaning of the inner cavity of the ring pipe when it is lifted by external lifting equipment.

[0004] However, the above-mentioned existing technology still has shortcomings in use: the upper filter screen and the sludge collection screen near the bottom are set inside the ring. In order to avoid filtration leakage, the outer wall of the lower filter screen and the sludge collection screen needs to be attached to the inner wall of the ring. Since dirt or hard particles are easily adhered to the inner wall of the ring, the resistance to pulling the lower filter screen and the sludge collection screen out of the ring is greatly increased, and it is difficult to clean the dirt inside the ring.

[0005] Therefore, this utility model provides a dewatering structure for power plant construction. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dewatering structure for power plant construction to solve the problems mentioned in the background. This utility model has the advantages of making it easier and less labor-intensive to remove the lower filter screen and silt collection screen from the cylinder, and it will not damage the lower filter screen and silt collection screen.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dewatering structure for power plant construction, comprising a coiled pipe, an aluminum pipe erected in the middle of the coiled pipe, an upper filter plate passing through the aluminum pipe, and a sludge collecting mesh cylinder fixedly connected to the bottom of the aluminum pipe by a fixing plate. The outer peripheral walls of the upper filter plate and the sludge collecting mesh cylinder are both clearance-fitted with the inner peripheral wall of the coiled pipe. The aluminum pipe is provided with sealing rings with expansion function located above the upper filter plate and the sludge collecting mesh cylinder, respectively. After expansion, the sealing rings can seal the gaps between the upper filter plate, the sludge collecting mesh cylinder and the coiled pipe.

[0008] Furthermore, the sealing ring includes a positioning ring and an annular airbag sleeved outside the positioning ring. The top of the annular airbag is provided with a connecting pipe, which is connected to an air nozzle located outside the annular airbag via a pipeline.

[0009] Furthermore, the positioning ring has an arc-shaped cross-section and its inner arc surface is bonded to the annular airbag. The inner circumferential wall of the positioning ring is fixedly connected to a positioning sleeve that is sleeved on the outside of the aluminum tube by a connecting rod.

[0010] Furthermore, the positioning sleeve and the aluminum tube are slidably fitted together, and a locking bolt is screwed through the outer peripheral wall.

[0011] Furthermore, a positioning ring is welded to the bottom of the positioning ring, and an annular slot is provided at the bottom of the positioning ring. The annular slot is inserted into the opening of the sludge collecting screen cylinder. A connecting sleeve is welded to the top of the upper filter plate, and the connecting sleeve is inserted into the adjacent annular slot.

[0012] Furthermore, an annular rubber pad is adhered to the bottom of the annular slot.

[0013] Furthermore, the outer peripheral wall of the aluminum tube is fixedly connected with tube clamps that are evenly distributed axially.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, the outer peripheral wall of the lower filter screen plate and the sludge collecting screen cylinder and the inner peripheral wall of the ring cylinder are configured with a clearance fit. This configuration allows the lower filter screen plate and the sludge collecting screen cylinder to be smoothly lifted up with the aluminum tube and detached from the ring cylinder, which has the advantage of making it easier to clean dirt. Then, a sealing ring with an expansion function is set in the gap formed between the lower filter screen plate and the sludge collecting screen cylinder and the inner peripheral wall of the ring cylinder, which can effectively prevent filter leakage. At the same time, the sealing ring has a shrinkage function, which does not affect the operation of the lower filter screen plate and the sludge collecting screen cylinder detaching from the ring cylinder. Compared with the prior art, it has the advantage of making it easier and faster to clean dirt in the ring cylinder.

[0016] 2. In this utility model, the sealing ring includes a positioning ring and an annular airbag sleeved outside the positioning ring. The bottom of the positioning ring is provided with a positioning ring with an annular slot. The top of the upper filter plate is inserted into the adjacent annular slot through a mating sleeve. The opening of the sludge collecting screen is inserted into the adjacent annular slot. This arrangement enables the sealing ring to effectively seal the parts in contact with the upper filter plate and the sludge collecting screen during use, preventing leakage. At the same time, it can also prevent the annular airbag from expanding and squeezing and deforming the upper filter plate and the sludge collecting screen. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a dewatering structure for power plant construction according to the present invention.

[0018] Figure 2 for Figure 1 A schematic diagram after removing the coiled tube;

[0019] Figure 3 This is a schematic diagram showing the upper filter plate, silt collection net cylinder, and positioning ring of a power plant construction dewatering structure after explosion and unfolding, according to this utility model.

[0020] In the diagram: 1. Coil; 2. Aluminum tube; 21. Pipe clamp; 3. Upper filter plate; 31. Connecting sleeve; 4. Sludge collection screen cylinder; 5. Sealing ring; 51. Positioning ring; 511. Connecting rod; 512. Positioning sleeve; 5121. Locking bolt; 513. Positioning ring; 5131. Annular slot; 51311. Annular rubber pad; 52. Ring-type airbag; 521. Connecting pipe; 53. Air nozzle; 6. Fixing plate. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1 to 3 This utility model provides a technical solution: a dewatering structure for power plant construction, including a coil pipe 1, with an aluminum pipe 2 erected in the middle of the coil pipe 1. In use, the top of the aluminum pipe 2 is connected to an external pumping pipeline through a flange. An upper filter plate 3 is installed on the aluminum pipe 2, and a sludge collection screen 4 is fixedly connected to the bottom of the aluminum pipe 2 through a fixing plate 6. The upper filter plate 3 filters fine sand and gravel and other debris, meaning that fine sand and gravel and other debris will remain on the upper filter plate 3. The sludge collection screen 4 is used to collect settled sludge.

[0023] In this technical solution, the outer peripheral walls of the upper filter plate 3 and the sludge collecting screen cylinder 4 are fitted with the inner peripheral wall of the coil tube 1 with a gap. That is to say, there is a gap between the upper filter plate 3 and the sludge collecting screen cylinder 4 and the coil tube 1. This control allows the upper filter plate 3 and the sludge collecting screen cylinder 4 to be carried away more smoothly when the aluminum tube 2 moves upward and separates from the coil tube 1, realizing the function of easy cleaning. After cleaning, the aluminum tube 2, the upper filter plate 3 and the sludge collecting screen cylinder 4 are reset and reused.

[0024] Furthermore, sealing rings 5 ​​with expansion function are provided on the aluminum tube 2, located above the upper filter plate 3 and the sludge collecting screen 4 respectively. When the sealing ring 5 expands, it can block the gap mentioned above, which can effectively prevent sewage from leaking along the gap, so that the upper filter plate 3 and the sludge collecting screen 4 cannot play an effective filtering role. When the sealing ring 5 contracts, the gaps open, and the upper filter plate 3 and the sludge collecting screen 4 can be easily controlled to move up and down inside the coil tube 1.

[0025] Specifically, the sealing ring 5 includes a positioning ring 51 and an annular airbag 52 sleeved outside the positioning ring 51. A connecting pipe 521 is provided at the top of the annular airbag 52, which is connected to an air nozzle 53 located outside the annular tube 1 via a pipeline. In use, the air nozzle 53 is connected to an air pump, causing the annular airbag 52 to inflate. When air needs to be released, the gas inside the annular airbag 52 can be discharged by pressing the valve inside the air nozzle 53. During use, axially evenly distributed pipe clamps 21 are fixedly connected to the outer circumferential wall of the aluminum tube 2. These pipe clamps 21 are used to fix the pipeline connecting the air nozzle 53.

[0026] In this embodiment, the cross-section of the positioning ring 51 is arc-shaped and its inner arc surface is bonded to the annular airbag 52. The inner peripheral wall of the positioning ring 51 is fixedly connected to the positioning sleeve 512 sleeved on the outside of the aluminum tube 2 by the connecting rod 511. This arrangement improves the installation accuracy of the positioning ring 51, ensures that the positioning ring 51 and the aluminum tube 2 are in a coaxial state, and can effectively seal the gap mentioned above.

[0027] Furthermore, the positioning sleeve 512 and the aluminum tube 2 are slidably fitted together, and a locking bolt 5121 is screwed through the outer peripheral wall. This arrangement facilitates the adjustment of the position of the positioning ring 51, so that the ring airbag 52 can reliably seal the gap mentioned above. After adjustment, the locking bolt 5121 can be tightened with a wrench.

[0028] In addition, a positioning ring 513 is welded to the bottom of the positioning ring 51, and the outer arc wall of the top of the positioning ring 51 is welded together. The bottom of the positioning ring 513 is provided with an annular slot 5131, which is inserted into the opening of the sludge collecting screen cylinder 4. A connecting sleeve 31 is welded to the top of the upper filter plate 3, which is inserted into the adjacent annular slot 5131. This insertion method enables the positioning ring 51 to improve the strength of the upper filter plate 3 and the sludge collecting screen cylinder 4 against torsion and bending deformation under load.

[0029] Furthermore, an annular rubber pad 51311 is bonded to the bottom of the annular slot 5131. This arrangement ensures that the upper filter plate 3, the sludge collecting mesh cylinder 4, and the adjacent sealing ring 5 are always in a sealed fit.

[0030] Working principle: When it is necessary to clean the dirt inside the coil tube 1, the aluminum tube 2 is lifted with the help of external lifting equipment. Before lifting, the gas in the annular airbag 52 is discharged through the air nozzle 53. After the annular airbag 52 contracts, a gap is formed between the upper filter plate 3 and the sludge collecting screen 4 and the inner wall of the coil tube 1. At this time, the aluminum tube 2 is lifted, and the upper filter plate 3 and the sludge collecting screen 4 carrying the corresponding dirt will be smoothly removed from the coil tube 1. After cleaning the dirt on the upper filter plate 3 and the sludge collecting screen 4, they are reset. Then, air is injected into the annular airbag 52 through the air nozzle 53. After the annular airbag 52 expands, it continues to play a sealing role.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A power plant construction dewatering structure comprising a ring pipe (1), a middle part of which is vertically provided with an aluminum pipe (2), an upper layer filter plate (3) is provided on the aluminum pipe (2), and a silt collection net cylinder (4) is fixedly connected to the bottom of the aluminum pipe (2) through a fixing plate (6), characterized in that, The outer peripheral wall of the upper filter plate (3) and the sludge collection net cylinder (4) are in clearance fit with the inner peripheral wall of the ring pipe (1), and the aluminum pipe (2) is provided with a sealing ring (5) with expansion function above the upper filter plate (3) and the sludge collection net cylinder (4), respectively, which can block the gap between the upper filter plate (3) and the sludge collection net cylinder (4) and the ring pipe (1) after expansion.

2. A dewatering structure for construction of a power plant according to claim 1, characterized in that: The sealing ring (5) comprises a positioning ring (51) and a ring-shaped air bag (52) sleeved outside the positioning ring (51), and the top of the ring-shaped air bag (52) is provided with a connecting pipe (521) connected with an air nozzle (53) outside the ring pipe (1) through a pipeline.

3. A dewatering structure for construction of a power plant building according to claim 2, characterized in that: The cross section of the positioning ring (51) is arc-shaped, and the inner arc surface thereof is adhesively connected with the ring-shaped air bag (52), and the inner peripheral wall of the positioning ring (51) is fixedly connected with a positioning sleeve (512) sleeved outside the aluminum pipe (2) through a connecting rod (511).

4. A dewatering structure for a power plant construction according to claim 3, characterized in that: The positioning sleeve (512) and the aluminum pipe (2) are in sliding fit, and the outer peripheral wall penetrates a locking bolt (5121).

5. A dewatering structure for a power plant construction according to claim 4, characterized in that: The bottom of the positioning ring (51) is welded with a positioning ring (513), the bottom of the positioning ring (513) is provided with an annular insertion slot (5131), the annular insertion slot (5131) is in insertion fit with the cylinder opening of the sludge collection net cylinder (4), and the top of the upper filter plate (3) is welded with a butt joint sleeve (31), which is in insertion fit with the adjacent annular insertion slot (5131).

6. A dewatering structure for a power plant construction according to claim 5, characterized in that: The bottom of the annular insertion slot (5131) is adhesively connected with an annular rubber pad (51311).

7. A dewatering structure for a power plant construction according to claim 2, characterized in that: The outer peripheral wall of the aluminum pipe (2) is fixedly connected with pipe clamps (21) uniformly distributed in the axial direction.

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