A modular underground water tank
By combining modular prefabricated water tank units with a bidirectional socket connection mechanism, the problems of transportation and sealing of buried water tanks are solved, achieving efficient sealing and pressure resistance, and ensuring long-term stable operation of the water tank in complex environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAIAN ZHONGDA WATER TANK CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-05-26
AI Technical Summary
Existing underground water tanks have low modularity, are difficult to transport and assemble on site, have poor joint sealing, are prone to underground water seepage accumulation, experience stress concentration under soil pressure, and have potential break points at the joints of the seepage prevention layer, thus failing to meet the long-term seepage prevention requirements of complex environments.
Modular prefabricated water tank units are adopted, and sealing and fixing are achieved through a two-way socket connection mechanism. The trapezoidal convex connection part is fitted with the concave connection part with the flow guide groove. Combined with the radial expansion effect of the hollow drum-shaped sealing ring when the locking clamp is pressurized, multiple sealing interfaces are formed. The annular reinforcing rib and the cross support structure form a composite pressure-bearing system. The seepage prevention layer is continuously overlapped at the connection part to enhance the compressive strength and seepage prevention performance of the module.
Significantly reduces transportation and installation costs; interface sealing meets IP68 standard, eliminating water seepage accumulation; traditional stress concentration is transformed into planar distributed stress, increasing compressive strength to over 0.3MPa; continuous overlap of the seepage prevention layer eliminates the risk of breakage; modular water tanks operate stably under complex geological conditions.
Smart Images
Figure CN224281459U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water tank processing technology, and more specifically to a modular underground water tank. Background Technology
[0002] Existing technologies for buried water tanks mostly employ integral casting or large prefabricated structures, resulting in low modularity, which restricts transportation and makes on-site assembly difficult. Their split connection structures generally use flat flange butt joints, which have defects such as poor joint sealing and easy accumulation of underground seepage. At the same time, the internal reinforcing ribs are mostly arranged in a single direction, which can easily cause stress concentration under earth pressure. Furthermore, traditional seepage prevention layers have the potential for breakage at the joints, which cannot meet the long-term seepage prevention requirements of complex underground environments.
[0003] Therefore, how to provide a modular underground water tank to address the above problems is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0004] In view of this, the present invention provides a modular underground water tank.
[0005] To achieve the above objectives, this utility model provides the following technical solution, comprising: several prefabricated water tank modules, adjacent modules being detachably connected by a bidirectional socket connection mechanism, each module having a load-bearing base at its bottom, the bidirectional socket connection mechanism including a convex connection part and a concave connection part on the side wall of the module, a sealing ring nested at the joint of the connection part, and a locking clamp covering the outside of the connection part, for achieving sealing and fixing between modules; each module having an annular reinforcing rib and a cross support frame inside, the annular reinforcing rib forming a continuous support surface with the side wall, the cross support frame having annular reinforcing ribs connected at both ends, for improving the compressive strength of the module; each module having an impermeable layer extending to the connection part on its outer surface, for preventing groundwater infiltration.
[0006] Preferably, in the above-mentioned modular underground water tank, the cross-section of the convex connecting part is trapezoidal, and the inner side of the concave connecting part is provided with an inclined guide groove. The inclination angle of the guide groove is 5-8°, which is used to guide the seepage water to be discharged to the outside of the module.
[0007] Preferably, in the above-mentioned modular underground water tank, the sealing ring is made of EPDM rubber, and its cross-section has a hollow drum-shaped structure, which is used to generate radial expansion sealing when the locking clamp is pressurized.
[0008] Preferably, in the above-mentioned modular underground water tank, the annular reinforcing ribs are distributed at a staggered angle of 45°, and the spacing between adjacent reinforcing ribs is 150-250mm, which is used to disperse the underground soil pressure.
[0009] Preferably, in the above-mentioned modular underground water tank, the four ends of the cross support frame are welded and fixed to the annular reinforcing ribs, and a reinforcing node plate is provided in the middle to improve the vertical bearing capacity.
[0010] Preferably, in the above-mentioned modular underground water tank, the lower surface of the load-bearing base is provided with an array of anti-buoyancy protrusions, the protrusion height being 50-80mm, to increase the frictional resistance between the module and the foundation.
[0011] Preferably, in the above-mentioned modular underground water tank, the anti-buoyancy protrusion is an inverted trapezoidal strip structure, with its long side direction perpendicular to the length direction of the module, and the spacing between adjacent protrusions is 300-500mm, which is used to directionally decompose buoyancy.
[0012] Preferably, in the above-mentioned modular underground water tank, the locking clamp is a stainless steel double-ear bolt fastening structure, and the inner side of the clamp is provided with a limiting groove that matches the contour of the connecting part, for uniformly applying radial locking force.
[0013] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a modular buried water tank. This utility model significantly reduces transportation and installation costs by using modular prefabricated water tank units with a bidirectional socket connection mechanism. Its trapezoidal cross-section convex connection part and concave connection part with flow guide groove are fitted together to form a multi-seal interface. Combined with the radial expansion effect of the hollow drum-shaped sealing ring when the clamp is locked, the interface sealing level reaches the IP68 standard, effectively preventing the accumulation of underground seepage water. The composite pressure-bearing system composed of 45° staggered ring reinforcing ribs and cross support structure transforms the point stress bearing of the traditional structure into a surface distributed force bearing. Combined with the continuous overlap of the HDPE seepage prevention layer at the connection part of more than 50mm, the overall compressive strength is increased to more than 0.3MPa and the risk of seepage breakage is eliminated. The inverted trapezoidal anti-buoyancy protrusions distributed in an array at the bottom of the module can offset the 1.5 times buoyancy generated by groundwater level fluctuations by increasing the friction coefficient of the contact surface, so as to realize the long-term stable operation of the modular buried water tank under complex geological conditions. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0015] Figure 1 The attached figure is a schematic diagram of the main structure of this utility model.
[0016] Figure 2 The attached figure is a schematic diagram of the structure of a single water tank module of this utility model. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see the appendix Figure 1-2 This utility model discloses a multi-layer stainless steel water tank.
[0019] This utility model,
[0020] Example 1
[0021] This embodiment provides a modular underground water tank, including several prefabricated water tank modules 1. The side walls of the modules are symmetrically equipped with bidirectional socket connection mechanisms 2. Adjacent modules are connected by convex connection parts 4 and concave connection parts 5. The cross-section of the convex connection part is trapezoidal, and the inner side of the concave connection part has a 5° inclined guide groove 8. The joint of the connection part is nested with a drum-shaped sealing ring made of EPDM rubber, and the outer side is covered with a stainless steel double-ear bolt locking clamp. The inner side of the clamp is provided with a limiting groove to uniformly apply radial locking force. The bottom of the module is fixed with a load-bearing base 3. The lower surface of the base is provided with an inverted trapezoidal anti-buoyancy protrusion with a height of 50mm. The long side of the protrusion is perpendicular to the length of the module and the spacing is 500mm. The module is internally welded with annular reinforcing ribs 6 and cross support frames 7. The annular reinforcing ribs are staggered at 45° and spaced 250mm apart. The ends of the cross support frames are welded to the annular reinforcing ribs, and a reinforcing node plate is provided in the middle. The outer surface of the module is covered with an HDPE anti-seepage layer, which extends to the joint of the connection part and overlaps by 50mm.
[0022] Example 2
[0023] Based on Example 1, the inclination angle of the guide channel was optimized to 8° to enhance the efficiency of external seepage drainage; the height of the anti-buoyancy protrusions was adjusted to 60mm and the spacing was reduced to 400mm to improve anti-buoyancy stability; the spacing of the annular reinforcing ribs was reduced to 200mm, the ends of the cross support frame and the annular reinforcing ribs were double-sided welded, and the thickness of the central reinforcing node plate was increased by 2mm to further enhance the module's compressive strength; the pre-tightening torque of the locking clamp bolts was increased to 35N·m to ensure that the radial expansion of the sealing ring reaches the design value.
[0024] Example 3
[0025] Based on Example 2, a balanced design with a 6° inclination angle for the guide channel is adopted, and the volume of the hollow cavity in the sealing ring is simultaneously optimized, increasing its expansion rate by 15% under a torque of 30-40 N·m; the height of the anti-buoyancy protrusion is increased to 80 mm, and a serrated pattern is set in the long side direction with the spacing compressed to 300 mm, improving the buoyancy decomposition efficiency by 20%; the spacing of the annular reinforcing ribs is further reduced to 150 mm, and a triangular stiffening rib is added to the node plate in the middle of the cross support frame, increasing the overall compressive strength of the module to 50 kPa; the overlap length of the seepage prevention layer is increased to 80 mm, and polyurethane sealant is applied to the joints to form a double seepage prevention barrier.
[0026] Example 4
[0027] Based on Example 3, the depth of the locking clamp limiting groove is increased by 0.5mm, improving the matching degree with the contour of the connection part and preventing local stress concentration in the sealing ring; rubber friction plates are embedded at the bottom of the anti-buoyancy protrusion, increasing the friction resistance by 30%; the annular reinforcing rib adopts a variable cross-section design, with the thickness near the bottom of the module increased by 10%, and the welding length at the end of the cross support frame is extended to 1 / 4 of the circumference of the annular reinforcing rib, so that the deformation of the module under 30kPa lateral earth pressure is less than 1.5mm; a geotextile protective layer is added outside the seepage prevention layer to avoid scratches from the backfill soil and rocks.
[0028] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A modular underground water tank, characterized in that, include: If the water tank module (1) is interfered with, the adjacent modules are detachably connected by a bidirectional socket connection mechanism (2). Each module is provided with a load-bearing base (3) at the bottom. The bidirectional socket connection mechanism (2) includes a convex connection part (4) and a concave connection part (5) on the side wall of the module, a sealing ring nested at the joint of the connection part, and a locking clamp covering the outside of the connection part, which are used to achieve sealing and fixing between modules. Each module is provided with an annular reinforcing rib (6) and a cross support frame (7). The annular reinforcing rib (6) forms a continuous support surface with the side wall. The two ends of the cross support frame (7) are connected to the annular reinforcing rib (6) to improve the compressive strength of the module. Each module is covered with an impermeable layer extending to the connection part to prevent groundwater from seeping in.
2. The modular underground water tank according to claim 1, characterized in that, The cross-section of the convex connecting part (4) is trapezoidal, and the inner side of the concave connecting part (5) is provided with an inclined guide groove (8). The inclination angle of the guide groove (8) is 5-8°, which is used to guide the seepage water to be discharged to the outside of the module.
3. The modular underground water tank according to claim 1, characterized in that, The sealing ring is made of EPDM rubber and has a hollow drum-shaped cross-section, which is used to generate radial expansion sealing when the locking clamp is pressurized.
4. The modular underground water tank according to claim 1, characterized in that, The annular reinforcing bars (6) are distributed at a staggered angle of 45°, with a spacing of 150-250 mm between adjacent reinforcing bars, to disperse the underground earth pressure.
5. The modular underground water tank according to claim 1, characterized in that, The four ends of the cross support frame (7) are welded and fixed to the annular reinforcing ribs (6), and a reinforcing node plate is provided in the middle to improve the vertical bearing capacity.
6. The modular underground water tank according to claim 1, characterized in that, The lower surface of the load-bearing base (3) is provided with arrayed anti-buoyancy protrusions, with a protrusion height of 50-80mm, which are used to increase the frictional resistance between the module and the foundation.
7. The modular underground water tank according to claim 6, characterized in that, The anti-buoyancy protrusion is an inverted trapezoidal strip structure with its long side perpendicular to the length of the module. The distance between adjacent protrusions is 300-500mm, which is used to directionally decompose buoyancy.
8. The modular underground water tank according to claim 1, characterized in that, The locking clamp is a stainless steel double-ear bolt fastening structure. The inner side of the clamp is provided with a limiting groove that matches the contour of the connecting part, which is used to uniformly apply radial locking force.