Quick sealing structure and method for prefabricated well modular assembly joint

Abstract

The rapid sealing structure comprises at least two mutually stacked prefabricated well modules, the bottoms of the prefabricated well modules are provided with birdmouths or insertion ports, the tops of the prefabricated well modules are provided with insertion ports or birdmouths, the end faces of the birdmouths extend downwards to form grooves, and the insertion ports are connected with the birdmouths. The inserting port is inserted into the groove, and the top of the inserting port and the top of the birdmouth form an assembling joint; at least one annular sealing groove is formed in the inner wall face, facing the splicing joint, of the birdmouth, and an elastic sealing piece is arranged in the annular sealing groove. An annular cavity is formed between the outer wall of the plugging port and the inner wall of the groove, a locking ring is arranged in the annular cavity, and the locking ring is in locking fit with the peripheral wall of the plugging port; a sealing piece is arranged on the peripheral wall of the birdmouth, and the sealing piece seals the joint of the bottom end of the birdmouth and the peripheral wall of the insertion port. The sealing structure is good in sealing performance, high in durability, high in construction speed and convenient to maintain in the later period.

Description

Technical Field

[0001] This invention relates to the field of underground pipeline construction technology, and in particular to a rapid sealing structure and method for modular assembly joints of prefabricated wells. Background Technology

[0002] Modular prefabricated inspection wells are gradually replacing traditional brick wells and cast-in-place wells due to their advantages such as stable quality, quick construction, and environmental friendliness. However, sealing the joints between the modules has always been a technical challenge and a weak point.

[0003] Current technologies primarily involve sealing joints by applying cement mortar or injecting sealant. However, cement mortar joints are prone to minute displacements, leading to cracking and leakage. Ordinary sealants are susceptible to aging and failure in the complex, chemically rich underground environment, making their durability difficult to guarantee. Furthermore, both methods heavily rely on manual labor, resulting in low construction efficiency, difficulty in quality control, and the need for curing time, hindering rapid assembly. Once leakage occurs, repairs are extremely difficult, often requiring large-scale excavation and incurring high costs.

[0004] Therefore, there is an urgent need to develop a rapid sealing structure and method for the modular assembly joints of prefabricated wells to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid sealing structure and method for modular assembly joints of prefabricated wells. This structure has good sealing performance, high durability, fast construction speed, and is easy to maintain later.

[0006] To achieve the above objectives, the present invention provides a rapid sealing structure for the modular assembly joints of prefabricated wells, the specific implementation of which is as follows: A quick-sealing structure for modular assembly joints of prefabricated wells includes at least two prefabricated well modules stacked on top of each other. The bottom of each prefabricated well module is provided with a receiving interface or a plug interface, and the top of each prefabricated well module is provided with a plug interface or a receiving interface. The end face of the receiving interface extends downward to form a groove, and the plug interface is inserted into the groove. The top of the plug interface and the top of the receiving interface form an assembly joint. At least one annular sealing groove is provided on the inner wall surface of the receiving interface facing the assembly joint, and an elastic sealing element is provided in the annular sealing groove; An annular cavity is formed between the outer wall of the insertion interface and the inner wall of the groove. A locking ring is provided in the annular cavity, and the locking ring is locked in place with the outer peripheral wall of the insertion interface. The outer peripheral wall of the receiving interface is provided with a sealing member, which seals the joint between the bottom end of the receiving interface and the outer peripheral wall of the insertion interface.

[0007] In some embodiments, the locking ring includes a plurality of elastic C-rings connected to each other, the inner ring of the locking ring is provided with a locking part, and the outer wall of the insertion interface is provided with a mating part that cooperates with the locking part.

[0008] By employing a locking ring composed of several interconnected elastic C-shaped rings, the locking ring possesses a certain degree of elasticity and opening, making it easy to slip or snap onto the outer periphery of the interface on-site. The design of the locking part and the mating part transforms the traditional connection method that relies purely on friction into a reliable mechanical interlocking connection, greatly enhancing the tensile strength and shear resistance of the interface, and ensuring the firmness and long-term reliability of the connection.

[0009] In some embodiments, the locking part is a continuous or intermittent reverse tooth, and the mating part is an annular locking groove that engages with the reverse tooth; Alternatively, the locking part may be an internal thread, and the mating part may be an external thread that mates with the internal thread.

[0010] When the locking part and the mating part adopt a toothed and locking groove mating form, the technical advantage is that it achieves one-way locking. During installation, simply pressing the locking ring into the annular cavity will produce a meshing sound. The installation process is quick, intuitive, and provides a sense of confirmation that it is in place, making it ideal for rapid construction. When a threaded mating form is used, the technical advantage is that continuous, uniform, and powerful locking force can be achieved through rotational tightening, generating more precise pre-tightening pressure on the elastic seal, resulting in better sealing performance. Furthermore, it can be fine-tuned or disassembled by screwing.

[0011] In some embodiments, the annular cavity is provided with a water-swellable sealing strip, which is attached to the bottom or side wall of the annular cavity.

[0012] By adding a water-swellable sealing strip inside the annular cavity, a unique "active" second line of defense for sealing is formed. Even if a trace amount of moisture breaches the first elastic seal, the sealing strip will rapidly expand upon contact with water, automatically filling all possible leakage channels, achieving self-repair and enhanced sealing, greatly improving the reliability and safety of the entire sealing system, and is particularly suitable for complex environments with abundant groundwater.

[0013] In some embodiments, the closure is an annular cap, with its top end snapping into a groove on the end face of the receiving interface, and its bottom end covering the seam between the bottom end of the receiving interface and the outer peripheral wall of the insertion interface.

[0014] By specifically defining the closure as a ring-shaped cover, its installation method of snapping at the top and covering at the bottom is simple and reasonable, enabling quick positioning and installation. It can effectively prevent mud and debris from entering the annular cavity, protect the internal locking mechanism from corrosion and blockage, and at the same time give the interface a flat and beautiful appearance.

[0015] In some embodiments, the top of the annular cover is provided with an extension ring, which is embedded in the groove at the end of the receiving interface. The top of the annular cover abuts against the bottom of the receiving interface. The extension ring is connected and fixed to the precast well module located above by self-tapping screws or bolts, and the annular cover is connected and fixed to the precast well module located below by self-tapping screws or bolts.

[0016] By setting an extension ring and embedding it into the groove at the end of the receiving interface, precise radial positioning of the annular cover is achieved, preventing displacement or loosening during use. Self-tapping screws or bolts are used to securely connect it to the upper and lower prefabricated well modules, providing robust axial fixing force and ensuring the stability of the closure during long-term use. It also offers strong vibration and impact resistance, making the entire interface structure more integrated.

[0017] In some embodiments, the insertion interface is embedded with a sealing gasket on the outer wall of the groove, and the inner peripheral wall of the extension ring presses against the sealing gasket.

[0018] By embedding a sealing gasket inside the outer wall of the connector and pressing it tightly by the inner circumferential wall of the extension ring, the technical effect is to add an extra static seal between the annular cover and the well module. This effectively prevents surface water, water vapor, dust, etc. from entering the internal annular cavity along the contact gap between the annular cover and the well wall, thereby improving the environmental sealing level of the entire interface and achieving all-round sealing protection from the inside out.

[0019] In some embodiments, the inner wall of the groove is provided with a guide slope, and the outer peripheral wall of the locking ring is provided with an installation slope that matches the guide slope; Alternatively, a guide groove may be provided on the inner wall of the groove, and a guide protrusion matching the guide groove may be provided on the outer wall of the locking ring.

[0020] By setting guide slopes or guide grooves on the inner wall of the groove and setting matching installation slopes or guide protrusions on the locking ring, precise guidance is provided for the installation process of the locking ring, so that the locking ring can be easily, quickly and accurately aligned and slid into the designed position, avoiding skewing, jamming or misalignment during the installation process, significantly reducing the installation difficulty and improving the installation efficiency and first-time success rate.

[0021] In some embodiments, the resilient sealing ring is made of EPDM rubber, neoprene rubber, or silicone rubber.

[0022] By specifically defining the material of the elastic seal as ethylene propylene diene monomer (EPDM), neoprene rubber (CR), or silicone rubber, the weather resistance, ozone aging resistance, chemical corrosion resistance, and wide temperature range of these polymer materials are fully utilized, enabling them to maintain high elasticity and sealing performance for a long time in harsh environments such as underground moisture and rich in various chemicals.

[0023] This invention also provides a rapid sealing method for modular assembly joints of prefabricated wells, comprising the following steps: S1: Clean the contact surfaces of the socket and the insertion interface; S2: Align the receiving interface of the upper precast well module with the insertion interface of the lower precast well module, and perform hoisting and docking so that the insertion interface is inserted into the groove of the receiving interface until the top of the insertion interface and the top of the receiving interface are joined to form an assembly joint, and the top of the insertion interface and / or the outer wall are squeezed to form an elastic seal to form a preliminary seal. S3: Install the locking ring in the annular cavity formed by the outer wall of the insertion interface and the inner wall of the groove, and lock the locking ring in a tight fit with the outer peripheral wall of the insertion interface; S4: Install the sealing element on the outer peripheral wall of the socket to seal the joint between the bottom of the socket and the outer peripheral wall of the insertion interface.

[0024] Based on the above technical solution, the present invention has the following beneficial effects compared with the prior art: By setting an annular sealing groove and elastic sealing element, a reliable first compression seal is formed during the insertion process, effectively preventing fluid leakage and achieving the core objective of good sealing performance. The matching design of the annular cavity and locking ring provides mechanical locking force, preventing the module from detaching or loosening due to external forces or foundation settlement, ensuring the long-term stability of the sealing interface, and thus guaranteeing high durability. The setting of the sealing element isolates the internal structure from the external environment, protecting the locking mechanism and keeping the appearance clean. When maintenance is required, only the sealing element needs to be opened to expose the internal locking ring and sealing cavity without damaging the well body structure, greatly simplifying the maintenance process and demonstrating the advantage of easy later maintenance. The entire structure adopts modular prefabrication and assembly construction. On-site, only simple hoisting, insertion, and installation of locking rings and sealing elements are required to complete the work. It is all dry operation, without the need for on-site pouring or waiting for material curing, which significantly improves the construction speed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is a schematic diagram of the prefabricated well module of the present invention; Figure 4 This is a schematic diagram of the locking ring structure of the present invention; Figure 5 This is a schematic diagram of the process of the present invention.

[0026] Explanation of reference numerals in the attached figures: 100. Precast well module; 110. Insertion interface; 111. Mating part; 120. Socket interface; 121. Groove; 122. Annular sealing groove; 123. Elastic seal; 124. Sealing gasket; 130. Assembly joint; 140. Annular cavity; 141. Water-swellable sealing strip; 150. Locking ring; 151. Elastic C-ring; 152. Locking part; 200. Closure; 210. Extension ring. Detailed Implementation

[0027] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0028] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0029] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the related listed items.

[0030] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0031] Example 1: like Figure 1-4 As shown, the quick-sealing structure for the prefabricated well module 100 assembly joint 130 provided in this embodiment includes at least two prefabricated well modules 100 stacked on each other. The bottom of the prefabricated well module 100 is provided with a receiving interface 120 or a plug interface 110, and the top of the prefabricated well module 100 is provided with a plug interface 110 or a receiving interface 120. The end face of the receiving interface 120 extends downward to form a groove 121. The plug interface 110 is inserted into the groove 121, and the top of the plug interface 110 and the top of the receiving interface 120 form an assembly joint 130. At least one annular sealing groove 122 is provided on the inner wall surface of the receiving interface 120 facing the assembly joint 130, and an elastic sealing element 123 is provided in the annular sealing groove 122. An annular cavity 140 is formed between the outer wall of the insertion interface 110 and the inner wall of the groove 121. A locking ring 150 is provided in the annular cavity 140, and the locking ring 150 is locked in place with the outer peripheral wall of the insertion interface 110. A sealing member 200 is provided on the outer peripheral wall of the receiving interface 120. The sealing member 200 seals the joint between the bottom end of the receiving interface 120 and the outer peripheral wall of the insertion interface 110, thereby forming a complete, aesthetically pleasing, dustproof and waterproof interface.

[0032] In some embodiments, the locking ring 150 includes a plurality of elastic C-shaped rings 151, adjacent elastic C-shaped rings 151 are connected to each other, the inner ring of the locking ring 150 is provided with a locking part 152, and the outer wall of the insertion interface 110 is provided with a mating part 111 that cooperates with the locking part 152.

[0033] By employing a locking ring 150 composed of several interconnected elastic C-shaped rings 151, the locking ring 150 possesses a certain degree of elasticity and opening, making it easy to slip or snap onto the outer periphery of the insertion interface 110 on-site. The setting of the locking part 152 and the mating part 111 transforms the traditional connection method that relies purely on friction into a reliable mechanical interlocking connection, greatly enhancing the tensile strength and shear resistance of the interface, and ensuring the firmness and long-term reliability of the connection.

[0034] In some embodiments, the locking part 152 is a continuous or intermittent reverse tooth, and the mating part 111 is an annular locking groove that engages with the reverse tooth; Alternatively, the locking part 152 may be an internal thread, and the mating part 111 may be an external thread that mates with the internal thread.

[0035] When the locking part 152 and the mating part 111 adopt a toothed and locking groove mating form, the technical advantage is that it achieves one-way locking. During installation, simply pressing the locking ring 150 into the annular cavity 140 will produce a meshing sound. The installation process is quick, intuitive, and provides a sense of confirmation, making it ideal for rapid construction. When a threaded mating form is adopted, the technical advantage is that continuous, uniform, and powerful locking force can be achieved through rotational tightening, generating more precise pre-tightening pressure on the elastic seal 123, resulting in better sealing performance. Furthermore, it can be fine-tuned or disassembled by screwing.

[0036] Preferably, the tips of the reverse teeth face the direction that facilitates the pressing of the locking ring 150, and the contour of the locking groove matches the reverse teeth.

[0037] In some embodiments, the annular cavity 140 is provided with a water-swellable sealing strip 141, which is attached to the bottom or side wall of the annular cavity 140.

[0038] Preferably, the water-swellable sealing strip 141 is made of water-swellable rubber and is fixed to the bottom or side wall of the annular cavity 140 by its self-adhesive properties.

[0039] A water-swellable sealing strip 141 is added inside the annular cavity 140, forming a unique "active" second line of defense. Even if a trace amount of moisture breaches the first elastic seal, the sealing strip will expand rapidly upon contact with water, automatically filling all possible leakage channels, achieving self-repair and enhanced sealing, greatly improving the reliability and safety of the entire sealing system, and is particularly suitable for complex environments with abundant groundwater.

[0040] In some embodiments, the closure 200 is an annular cap, with its top end snapping into the groove 121 on the end face of the receiving interface 120, and its bottom end covering the joint between the bottom end of the receiving interface 120 and the outer peripheral wall of the insertion interface 110.

[0041] By specifically defining the closure 200 as a ring-shaped cover, its installation method of snapping at the top and covering at the bottom is simple and reasonable, enabling quick positioning and installation. It can effectively prevent mud and debris from entering the annular cavity 140, protect the internal locking mechanism from corrosion and blockage, and at the same time give the interface a flat and beautiful appearance.

[0042] In some embodiments, the top of the annular cover is provided with an extension ring 210, which is embedded in the groove 121 at the end of the receiving interface 120. The top of the annular cover abuts against the bottom of the receiving interface 120. The extension ring 210 is connected and fixed to the precast well module 100 located above by self-tapping screws or bolts, and the annular cover is connected and fixed to the precast well module 100 located below by self-tapping screws or bolts.

[0043] By setting an extension ring 210 and embedding it into the groove 121 at the end of the receiving interface 120, precise radial positioning of the annular cover is achieved, preventing displacement or loosening during use. Self-tapping screws or bolts are used to fix it to the upper and lower prefabricated well modules 100 respectively, providing robust axial fixing force and ensuring the stability of the closure 200 during long-term use. It also exhibits strong vibration and impact resistance, making the entire interface structure more integrated.

[0044] Preferably, the annular cover can be made of metal, plastic or composite material, and the extension ring 210 and the annular cover are integrally formed.

[0045] In some embodiments, the insertion interface 110 is embedded in the outer wall of the groove 121 with a sealing gasket 124, and the inner peripheral wall of the extension ring 210 presses against the sealing gasket 124.

[0046] By embedding a sealing gasket 124 inside the outer wall of the insertion interface 110 and pressing it with the inner circumferential wall of the extension ring 210, the technical effect is to add an extra static seal between the annular cover and the well module, which can effectively prevent surface water, water vapor, dust and other substances from entering the inner annular cavity 140 along the contact gap between the annular cover and the well wall, improve the environmental sealing level of the entire interface, and achieve all-round sealing protection from the inside to the outside.

[0047] In some embodiments, the inner wall of the groove 121 is provided with a guide slope, and the outer peripheral wall of the locking ring 150 is provided with an installation slope that matches the guide slope; Alternatively, a guide groove may be provided on the inner wall of the groove 121, and a guide protrusion matching the guide groove may be provided on the outer wall of the locking ring 150.

[0048] By setting a guide slope or guide groove on the inner wall of the groove 121 and setting a matching installation slope or guide protrusion on the locking ring 150, precise guidance is provided for the installation process of the locking ring 150, so that the locking ring 150 can be easily, quickly and accurately aligned and slid into the design position, avoiding skewing, jamming or misalignment during the installation process, significantly reducing the installation difficulty, improving the installation efficiency and the first-time success rate.

[0049] Preferably, the inclination angle of the guide ramp is between 15° and 45°.

[0050] In some embodiments, the resilient sealing ring is made of EPDM rubber, neoprene rubber, or silicone rubber.

[0051] By specifically defining the material of the elastic seal 123 as ethylene propylene diene monomer (EPDM), chloroprene rubber (CR), or silicone rubber, the weather resistance, ozone aging resistance, chemical corrosion resistance, and wide temperature range of these polymer materials are fully utilized, enabling them to maintain high elasticity and sealing performance for a long time in harsh environments such as underground moisture and rich in various chemicals.

[0052] The rapid sealing structure of the prefabricated well module 100 assembly joint 130 provided in this embodiment, compared with the prior art, forms a reliable first compression seal during the insertion process by setting an annular sealing groove 122 and an elastic sealing element 123, effectively preventing fluid leakage and achieving the core objective of good sealing performance; the matching design of the annular cavity 140 and the locking ring 150 provides mechanical locking force, preventing the module from detaching or loosening due to external forces or foundation settlement, ensuring the long-term stability of the sealing interface, thereby ensuring high durability; the sealing element 20 The 0 setting isolates the internal structure from the external environment, protecting the locking mechanism and maintaining a clean appearance. When maintenance is required, simply opening the closure 200 exposes the internal locking ring 150 and the sealed cavity without damaging the well structure, greatly simplifying the maintenance process and demonstrating its advantage of easy later maintenance. The entire structure adopts modular prefabrication and assembly construction, requiring only simple hoisting, insertion, and installation of the locking ring 150 and closure 200 on site. It is all dry operation, eliminating the need for on-site pouring or waiting for material curing, significantly improving construction speed.

[0053] Example 2: like Figure 5 As shown in the figure, the rapid sealing method for the prefabricated well module 100 assembly joint 130 provided in this embodiment includes the following steps: S1: Clean the contact surfaces of the socket 120 and the insertion interface 110; S2: Align the receiving interface 120 of the upper precast well module 100 with the insertion interface 110 of the lower precast well module 100, and perform hoisting and docking so that the insertion interface 110 is inserted into the groove 121 of the receiving interface 120 until the top of the insertion interface 110 and the top of the receiving interface 120 are joined to form an assembly joint 130, and the top and / or outer wall of the insertion interface 110 are squeezed to form an elastic sealing element 123 to form a preliminary seal. S3: Install the locking ring 150 in the annular cavity 140 formed by the outer wall of the insertion interface 110 and the inner wall of the groove 121, and lock the locking ring 150 in a locking fit with the outer peripheral wall of the insertion interface 110. S4: Install the closure 200 on the outer peripheral wall of the socket 120 to seal the joint between the bottom end of the socket 120 and the outer peripheral wall of the insertion interface 110.

[0054] Step S1 aims to create a clean and reliable contact interface for subsequent sealing and connection. Specific operations include: using tools such as a brush and a high-pressure air gun to thoroughly remove all adhering dirt, sand, debris, oil, and other impurities from the inner wall and end face of the receiving interface 120, as well as the outer wall and top of the insertion interface 110. Special attention must be paid to ensuring that there are no foreign objects in the annular sealing groove 122, and that the pre-embedded elastic sealing element 123 (such as a rubber sealing ring) is intact, without twisting or detachment, and that a special silicone grease lubricant is evenly applied to its surface to reduce frictional resistance during insertion and prevent the sealing ring from being sheared and damaged. This step is fundamental to ensuring the effectiveness of the first seal; insufficient cleanliness will directly affect the final sealing effect.

[0055] Step S2 is the core assembly process, and the key lies in precise alignment and smooth insertion. Specific operations include: using lifting equipment (such as a crane), flexibly securing the upper precast well module 100 with nylon lifting straps to the designated lifting point, and smoothly lifting it. The operator directs the crane to precisely align the receiving interface 120 of the upper module with the insertion interface 110 of the lower precast well module 100. The upper module is slowly and vertically lowered, guiding the insertion interface 110 smoothly into the groove 121 of the receiving interface 120. During this process, continuous observation is necessary to ensure uniform gaps around the perimeter and no jamming or skewing. When the outer wall of the end of the insertion interface 110 begins to contact and compress the elastic seal 123 within the annular sealing groove 122, a significant increase in resistance will be felt. At this point, the descent speed should be controlled, relying on the module's own weight or applying a slight external force to ensure it is fully lowered into place until the top of the insertion interface 110 is completely aligned with the top of the receiving interface 120, forming a flat assembly joint 130. At this point, the elastic seal 123 has been fully compressed, filling all the gaps between the sealing groove and the outer wall of the socket, forming a reliable first compression sealing barrier.

[0056] Step S3 aims to provide mechanical interlocking, ensuring the pull-out strength and long-term stability of the connection. The specific operation includes: after confirming the module is properly aligned, the operator opens the locking ring 150 (e.g., a ring composed of several elastic C-shaped rings 151 segments) from the opening and places it over the exposed portion of the insertion interface 110. Then, using a rubber mallet, wooden mallet, or specialized installation tool, the operator evenly taps along the circumference of the locking ring 150, gradually pressing it into the annular cavity 140 formed by the outer wall of the insertion interface 110 and the inner wall of the groove 121. If the inner ring of the locking ring 150 has counter-teeth, and the outer wall of the insertion interface 110 has an annular locking groove, when the locking ring 150 is tapped to the designed depth, its counter-teeth will fully engage with the locking groove, producing a clear "click" sound, and the operator will feel a distinct sense of closure, indicating that the locking ring 150 has achieved mechanical locking. This operation transforms a simple socket connection into a rigid connection that is resistant to pull-out and shearing, and provides continuous clamping force to the internal elastic seal 123.

[0057] Step S4 involves final sealing and external protection of the interface, completing all assembly work. Specific operations include: taking the sealing component 200 (such as an annular cap), aligning its top extension ring 210 with and inserting it into the pre-reserved groove 121 at the end of the receiving interface 120, and pressing it down into place. At this time, the top of the annular cap should abut against the bottom of the receiving interface 120, and its bottom should completely cover the seam between the bottom of the receiving interface 120 and the outer peripheral wall of the insertion interface 110. Finally, using a power screwdriver or wrench, first secure the extension ring 210 to the upper prefabricated well module 100 (i.e., the module to which the receiving interface 120 belongs) with self-tapping screws or bolts; then, secure the body of the annular cap to the lower prefabricated well module 100 (i.e., the module to which the insertion interface 110 belongs). After installation, check whether the cap is installed flat and securely. This closure 200 not only gives the interface a beautiful and clean appearance, but more importantly, it can effectively prevent external mud, sand and debris from entering the annular cavity 140, protect the internal locking mechanism from corrosion and blockage, and also add an extra environmental seal to the entire interface.

[0058] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A rapid sealing structure for the prefabricated well module (100) assembly joint (130), characterized in that, The device includes at least two prefabricated well modules (100) stacked on top of each other. The bottom of the prefabricated well module (100) is provided with a receiving interface (120) or a plug interface (110), and the top of the prefabricated well module (100) is provided with a plug interface (110) or a receiving interface (120). The end face of the receiving interface (120) extends downward to form a groove (121). The plug interface (110) is inserted into the groove (121), and the top of the plug interface (110) and the top of the receiving interface (120) form an assembly joint (130). At least one annular sealing groove (122) is provided on the inner wall surface of the receiving interface (120) facing the assembly joint (130), and an elastic sealing element (123) is provided in the annular sealing groove (122). An annular cavity (140) is formed between the outer wall of the insertion interface (110) and the inner wall of the groove (121). A locking ring (150) is provided in the annular cavity (140), and the locking ring (150) is locked in place with the outer peripheral wall of the insertion interface (110). The outer peripheral wall of the receiving interface (120) is provided with a sealing member (200), which seals the joint between the bottom end of the receiving interface (120) and the outer peripheral wall of the insertion interface (110).

2. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in claim 1, characterized in that, The locking ring (150) includes a plurality of elastic C-shaped rings (151), adjacent elastic C-shaped rings (151) are connected to each other, the inner ring of the locking ring (150) is provided with a locking part (152), and the outer wall of the insertion interface (110) is provided with a mating part (111) that cooperates with the locking part (152).

3. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in claim 2, characterized in that, The locking part (152) is a continuous or intermittent reverse tooth, and the mating part (111) is an annular locking groove that engages with the reverse tooth; Alternatively, the locking part (152) may be an internal thread, and the mating part (111) may be an external thread that mates with the internal thread.

4. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in any one of claims 1-3, characterized in that, The annular cavity (140) is provided with a water-swellable sealing strip (141), which is attached to the bottom or side wall of the annular cavity (140).

5. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in any one of claims 1-3, characterized in that, The closure (200) is an annular cover, with its top end snapped into the groove (121) on the end face of the receiving interface (120), and its bottom end covering the joint between the bottom end of the receiving interface (120) and the outer peripheral wall of the insertion interface (110).

6. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in claim 5, characterized in that, The top of the annular cover is provided with an extension ring (210), which is embedded in the groove (121) at the end of the receiving interface (120). The top of the annular cover abuts against the bottom of the receiving interface (120). The extension ring (210) is connected and fixed to the prefabricated well module (100) located above by self-tapping screws or bolts. The annular cover is connected and fixed to the prefabricated well module (100) located below by self-tapping screws or bolts.

7. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in claim 6, characterized in that, The insertion interface (110) is located on the outer wall of the groove (121) and a sealing gasket (124) is embedded therein. The inner peripheral wall of the extension ring (210) presses against the sealing gasket (124).

8. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in any one of claims 1-3, characterized in that, The inner wall of the groove (121) is provided with a guide slope, and the outer peripheral wall of the locking ring (150) is provided with an installation slope that matches the guide slope; Alternatively, a guide groove may be provided on the inner wall of the groove (121), and a guide protrusion matching the guide groove may be provided on the outer wall of the locking ring (150).

9. The rapid sealing structure of the prefabricated well module (100) assembly joint (130) as described in any one of claims 1-3, characterized in that, The elastic sealing ring is made of EPDM rubber, neoprene rubber or silicone rubber.

10. A rapid sealing method for the prefabricated well module (100) assembly joint (130), applied in the rapid sealing structure of the prefabricated well module (100) assembly joint (130) according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Clean the contact surfaces of the socket (120) and the insertion interface (110); S2: Align the receiving interface (120) of the upper prefabricated well module (100) with the insertion interface (110) of the lower prefabricated well module (100) and perform hoisting and docking so that the insertion interface (110) is inserted into the groove (121) of the receiving interface (120) until the top of the insertion interface (110) and the top of the receiving interface (120) are joined to form an assembly joint (130), and the top and / or outer wall of the insertion interface (110) are squeezed to form an elastic seal (123) to form a preliminary seal; S3: Install the locking ring (150) in the annular cavity (140) formed by the outer wall of the insertion interface (110) and the inner wall of the groove (121), and lock the locking ring (150) in a tight fit with the outer peripheral wall of the insertion interface (110); S4: Install the closure (200) on the outer peripheral wall of the socket (120) to close the joint between the bottom end of the socket (120) and the outer peripheral wall of the insertion interface (110).

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