CN112944058A

CN112944058A - Spiral winding composite underground pipeline

Info

Publication number: CN112944058A
Application number: CN202110275235.1A
Authority: CN
Inventors: 沙月华; 管恩政; 陈俊琛; 王金山; 秦庆戊
Original assignee: 5elem Material Scientific Jiangsu Co ltd
Current assignee: 5elem Material Scientific Jiangsu Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-06-11

Abstract

The invention relates to a spirally wound composite underground pipeline which comprises an inner layer pipeline, a sealing structure and at least one group of clamping structures, wherein the UPVC base pipe is spirally wound and extends along a first spiral line; the reinforcing layer comprises a plurality of steel belts, and the steel belts at least cover the clamping structure; an outer pipe extending continuously along the first axis and configured as a reinforced concrete pipe cast over the outer surface of the reinforcement layer and the outer surface of the inner pipe exposed out of the reinforcement layer; the inner layer pipeline is corrosion resistant and has longer service life; the reinforcing layer improves the structural strength and stability, and the ring stiffness reaches SN 12.5; the reinforced concrete pipe has stronger external pressure bearing capacity, and forms a spiral winding composite underground pipeline with the diameter of 3m-6m and an ultra-large caliber.

Description

Spiral winding composite underground pipeline

Technical Field

The invention relates to the technical field of pipelines, in particular to a spirally wound composite underground pipeline.

Background

The gravity drainage pipeline only depends on the inclined slope gravity flow drainage of the drainage pipe because the gravity drainage pipeline does not need external pressure application, has the advantages of one-time laying, long service life, small maintenance and overhaul amount, economy, environmental protection and the like, and is widely applied to underground pipe networks such as water supply and drainage systems, irrigation and water conservancy in farmland, mines, chemical industry drainage and the like.

At present, the gravity drainage pipeline mainly comprises a nodular cast iron pipe, a glass fiber reinforced plastic sand inclusion pipe, a reinforced concrete pipe, a PVC (Polyvinyl chloride) spiral winding pipe and other forms, wherein the glass fiber reinforced plastic sand inclusion pipe and the reinforced concrete pipe occupy most of the heavy-calibre (the calibre exceeds 1000mm) gravity drainage pipeline market, the most of the calibre of the PVC spiral winding pipe in the rest share is set below 1200mm, and the actual application is less, but the existing gravity drainage pipeline with the calibre exceeding 3500mm is almost not produced by manufacturers due to the reasons that the preparation process is troublesome, the transportation and installation are difficult, the manufacturing cost is high and the like, and the existing nodular cast iron pipe has extremely poor corrosion resistance under the environments of sewage, chemical drainage and the like, and is generally corroded seriously and even perforated after being used for ten years, so that the pipeline safety is influenced; the glass fiber reinforced plastic sand inclusion pipe requires to use medium sand for landfill, once leakage occurs, underground water and soil loss is easily caused, and the surface of the ground collapses to cause safety accidents; the permeability resistance of the reinforced concrete pipe is poor, and corrosive media such as hydrogen sulfide easily permeate into the wall of the reinforced concrete pipe to cause corrosion and embrittlement of the steel bar, so that the risk of pipeline collapse exists; the rigidity of the UPVC spiral pipe is reduced along with the increase of the caliber, the self-bearing capacity is poor, the popularization and the application of the UPVC spiral pipe are influenced, and the leakage risk during the joint is increased.

Therefore, it is very important to provide a spirally wound composite underground pipeline with ultra-large diameter, corrosion resistance, long service life, low transportation cost, high ring stiffness, high safety and low manufacturing cost.

Disclosure of Invention

Based on this, it is necessary to provide a compound underground piping of spiral winding to aim at above-mentioned problem, and this compound underground piping of spiral winding has super large bore, can make very big reduction cost of transportation by the scene, and corrosion resistance is stronger, and life is longer, and ring rigidity is great, and self-supporting ability is stronger, and the security is higher, prevents soil erosion and earth's surface collapse.

The invention provides a spirally wound composite underground pipeline, comprising:

the inner-layer pipeline comprises a UPVC base pipe, a sealing structure and at least one group of clamping structure, wherein the UPVC base pipe spirally winds and extends along a first spiral line, the sealing structure is arranged between two side faces, adjacent along the first spiral line, of the UPVC base pipe so that the inner-layer pipeline forms a sealing space continuously extending along a first axis, and the clamping structure comprises a first matching part and a second matching part which are positioned in the UPVC base pipe and are clamped along two adjacent sides of the first spiral line;

the reinforcing layer comprises a plurality of steel belts, and the steel belts at least cover the clamping structure;

an outer pipe extending continuously along the first axis and configured as a reinforced concrete pipe cast over the outer surface of the reinforcement layer and the outer surface of the inner pipe exposed out of the reinforcement layer.

In the spirally wound composite underground pipeline, the UPVC base pipe extends along the spiral winding of the first spiral line, and is clamped and matched with the second matching part through the first matching part to form a clamping structure, so that the UPVC base pipe can be conveniently and quickly fixed, the structural strength of the inner layer pipeline is higher, the stability is better, the service life of the spirally wound composite underground pipeline is longer due to the corrosion resistance of the UPVC base pipe, and the sealing structure between the two adjacent side surfaces along the spiral of the first spiral line in the UPVC base pipe ensures that the inner layer pipeline forms a sealing space continuously extending along the first axis, so that liquid leakage is blocked, the contact of conveyed fluid, microorganisms and gas with other parts of the composite pipeline is isolated, and the service life of the spirally wound composite underground pipeline is fully prolonged; each steel belt in the reinforcing layer is arranged on the clamping structure, so that the structural strength and the stability of the connecting position of the first matching part and the second matching part can be improved, the ring stiffness of the spirally wound composite underground pipeline reaches SN12.5, and the structural strength and the stability are high; the reinforced concrete pipe is formed by pouring concrete on the outer surface of the reinforcing layer and the outer surface of the inner-layer pipeline exposed out of the reinforcing layer and is used as an outer-layer pipeline, the outer-layer pipeline continuously extends along the first axis, so that the external pressure bearing capacity of the outer-layer pipeline is higher, the reinforcing layer and the inner-layer pipeline can be protected on the one hand, the integral ring rigidity of the spirally-wound composite underground pipeline is higher, the caliber range can be enlarged, and the spirally-wound composite underground pipeline with the ultra-large caliber is formed; on the other hand, the safety can be improved, and soil erosion and surface subsidence can be prevented. In addition, the UPVC base pipe can be spirally wound on a construction site, an outer layer pipeline can be formed by pouring on the construction site, only preformed sectional materials are needed to be transported to the site, the transportation cost can be greatly reduced, the transportation cost can be conveniently transported, the transportation cost can be saved, the construction is rapid, the occupied area of construction is small, and the further expansion of the caliber of the spirally wound composite underground pipeline is facilitated.

In one embodiment, the first mating portion includes at least one latch and the second mating portion includes at least one latch slot.

In one embodiment, the first mating portion and the second mating portion respectively include at least one latch and at least one locking groove, and the latch of the first mating portion and the locking groove of the second mating portion are correspondingly disposed.

In one embodiment, the lock catch is in an arrow-shaped structure along the section spreading shape of the first spiral line direction, the lock groove is in an arrow-groove-shaped structure along the section spreading shape of the first spiral line direction, and a rib plate is formed on one side, away from the lock catch, of the lock groove.

In one embodiment, the sealing structure comprises a sealing element and a hot melt adhesive, a sealing groove is formed in one side, close to the end part of the lock catch, of the lock groove, the sealing element is filled in the sealing groove, the sealing element abuts against the sealing groove and the surface opposite to the lock catch, and the hot melt adhesive is arranged on the surface opposite to the lock groove and the UPVC base pipe.

In one embodiment, the UPVC base pipe is formed by spirally winding a strip-shaped UPVC profile, the first matching part and the second matching part are arranged on two sides of the strip-shaped UPVC profile along the width direction of the strip-shaped UPVC profile and extend out of the same surface of the strip-shaped UPVC profile along the direction perpendicular to the strip-shaped UPVC profile.

In one embodiment, the number of the clamping structures is one group, and the first matching portion and the second matching portion respectively extend along the first spiral line.

In one embodiment, the number of the clamping structures is multiple groups, the multiple groups of clamping structures are arranged on the UPVC base pipe along the first spiral line, and each clamping structure is positioned on any two adjacent UPVC base pipes with opposite extending directions.

In one embodiment, the outer surface of the UPVC base pipe has at least one reinforcing rib disposed around the UPVC base pipe along the first spiral line.

In one embodiment, the cross section of the reinforcing rib along the first spiral line direction is unfolded to form a T-shaped structure, the cross section of the steel belt along the first spiral line direction is unfolded to form a W-shaped structure, the steel belt covers the clamping structure, and two ends of the steel belt abut against the two parts of the reinforcing rib close to the clamping structure respectively.

In one embodiment, the section of the reinforcing rib along the first spiral line direction is spread to form a straight structure, the section of the steel belt along the first spiral line direction is spread to form a zigzag structure, and the steel belt covers at least one clamping structure and at least one part of the reinforcing rib close to the clamping structure.

In one embodiment, the inner layer pipeline is of a cylindrical structure, and the outer layer pipeline is of a square cylindrical structure and is provided with a planar bottom surface, a top plate and two side surfaces.

Drawings

FIG. 1 is a right side view of a spirally wound composite underground conduit provided in accordance with the present invention;

FIG. 2 is a schematic structural view of a spirally wound composite underground pipe according to the present invention;

fig. 3 is a schematic structural diagram of a spirally wound composite underground pipeline provided by the invention.

Reference numerals:

10. spirally winding the composite underground pipeline;

100. an inner layer pipe; 110. a UPVC base pipe; 120. a clamping structure; 121. a first mating portion; 122. a second mating portion; 123. locking; 1231. a first buckle body; 1232. a second buckle body; 124. locking the groove; 1241. a first tank body; 1242. a first tank body; 125. a rib plate; 126. a sealing groove; 127. reinforcing ribs;

200. a reinforcing layer; 210. a steel belt;

300. an outer pipe; 310. concrete; 320. reinforcing steel bars;

400. a sealing structure; 410. a seal member; 420. and (5) hot melt adhesive.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship based on the drawings, which are used for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical scheme provided by the embodiment of the invention is described below by combining the accompanying drawings.

As shown in fig. 1, 2 and 3, the present invention provides a spirally wound composite underground pipeline 10, wherein the spirally wound composite underground pipeline 10 is applied to underground pipe networks of water supply and drainage systems, irrigation and irrigation, mines and chemical drainage, and the like, the spirally wound composite underground pipeline 10 comprises three structures, namely an inner pipeline 100, a reinforcing layer 200 and an outer pipeline 300, wherein:

as shown in fig. 1, 2 and 3, the inner-layer pipe 100 includes an UPVC (hardened Polyvinyl Chloride) base pipe 110, a sealing structure 400 and at least one set of clamping structure 120, the UPVC base pipe 110 is made of UPVC material, the UPVC material is not easy to react with acid, alkali and salt, and has strong corrosion resistance and aging resistance, so that the UPVC base pipe 110 has better corrosion resistance, the service life of the inner-layer pipe 100 is prolonged, and the service life of the UPVC base pipe is as long as 50 years. And various UPVC base tubes with the diameter range of DN300-6000mm are formed by the winding machine component, so that the operation is simple, convenient and quick. In addition, the base pipe of the inner layer pipeline is not limited to the UPVC base pipe 110, and may be made of PE (polyethylene) or other materials that can meet the requirements.

UPVC base tube 110 extends along first helix spiral winding, in order to form spiral winding column structure, the both sides face that UPVC base tube 110 extends along first helix direction is adjacent setting except the tip of UPVC base tube 110, make UPVC base tube 110 be a tubular structure, be provided with seal structure 400 between the both sides face that UPVC base tube 110 extends along first helix direction, this seal structure 400 cooperatees with UPVC base tube 110 so that this inlayer pipeline is the sealed space of extending in succession along the primary axis, when specifically setting up, this primary axis can be for the straight line, pitch arc or the combination form of straight line and pitch arc.

As shown in fig. 3, the clamping structure 120 includes a first matching portion 121 and a second matching portion 122, the first matching portion 121 and the second matching portion 122 are located at two adjacent sides of the UPVC base pipe 110 along a first spiral line, and the first matching portion 121 and the second matching portion 122 are in clamping fit with each other to form the clamping structure 120, so that the spirally wound UPVC base pipe 110 has good structural stability.

As shown in fig. 3, the reinforcing layer 200 includes a plurality of steel strips 210, each steel strip 210 covering at least the clamping structure 120; in a specific arrangement, the steel strip 210 may be made of a galvanized steel sheet, and the steel strip 210 may also be made of a stainless steel sheet, for example, a 304 stainless steel sheet. The number of the steel strips 210 corresponds to the number of the clamping structures 120, for example, the steel strips 210 and the clamping structures 120 are arranged in a one-to-one correspondence manner, so that the structural strength of each clamping structure 120 is enhanced, and for example, each steel strip 210 corresponds to a plurality of clamping structures 120, so as to facilitate the arrangement of the steel strips 210.

As shown in fig. 1, 2 and 3, the outer pipe 300 extends continuously along a first axis, and the outer pipe 300 is provided as a reinforced concrete pipe formed of concrete 310 cast on an outer surface of the reinforcing layer 200 and an outer surface of the inner pipe 100 exposed out of the reinforcing layer 200, for protecting the reinforcing layer 200 and the inner pipe 100, and capable of preventing liquid leakage when the inner pipe 100 leaks; in a specific arrangement, the concrete 310 may be labeled as C15, C20, C25, C30, and C35, and certainly, the label of the concrete 310 is not limited thereto, and may be other labels meeting the requirement of the pressure-bearing strength, in order to improve the pressure-bearing strength, a plurality of steel bars 320 may be further disposed in the concrete 310, the steel bars 320 may be uniformly distributed in the concrete 310, the number of the steel bars 320 may be increased in some regions of the reinforced concrete pipe, for example, the number of the steel bars 320 is increased in a bending region, the steel bars 320 may be covered outside the reinforcement layer 200 and the inner pipe 100, and the steel bars 320 may be further disposed on one side of the reinforcement layer 200 and the inner pipe 100, which is close to the ground, so as to improve the pressure-bearing effect.

In the spirally wound composite underground pipeline 10, the UPVC base pipe 110 is spirally wound and extended along a first spiral line, the first matching part 121 and the second matching part 122 are arranged on two sides of the UPVC base pipe 110, the first matching part 121 and the second matching part 122 are matched in a clamping manner to form the clamping structure 120, the UPVC base pipe 110 is conveniently and quickly fixed through the clamping structure 120 on the UPVC base pipe 110, so that the inner pipeline 100 has higher structural strength and better stability, and the UPVC base pipe 110 has corrosion resistance, so that the service life of the spirally wound composite underground pipeline 10 is longer, and the sealing structure 400 between two adjacent side faces along the first spiral line in the UPVC base pipe 110 ensures that the inner pipeline 100 forms a sealing space continuously extending along the first axis, and prevents liquid leakage, so as to isolate the contact of the conveyed fluid, microorganisms and gas with other parts of the composite pipeline, the service life of the spirally wound composite underground pipeline 10 is fully prolonged; the reinforcing layer 200 is arranged on the outer side of the inner-layer pipeline 100, and each steel belt 210 in the reinforcing layer 200 is arranged on the clamping structure 120, so that the structural strength and stability of the connecting position of the first matching part 121 and the second matching part 122 can be improved, the ring rigidity of the spirally-wound composite underground pipeline 10 can reach SN12.5, and the structural strength and stability of the spirally-wound composite underground pipeline 10 can be further enhanced; the outer surface of the reinforcing layer 200 and the outer surface of the inner pipeline 100 exposed out of the reinforcing layer 200 are poured with concrete 310 to form a reinforced concrete pipe as an outer pipeline 300, the outer pipeline 300 continuously extends along a first axis, so that the external pressure bearing capacity of the outer pipeline 300 is high, on one hand, the reinforcing layer 200 and the inner pipeline 100 can be protected, further, the integral ring stiffness of the spirally wound composite underground pipeline 10 is high, the caliber range can be expanded, and the spirally wound composite underground pipeline 10 with the ultra-large caliber can be formed; on the other hand, the safety can be improved, and soil erosion and surface subsidence can be prevented. In addition, the UPVC base pipe 110 can be spirally wound on a construction site, the outer layer pipeline 300 can be formed by pouring on the construction site, only preformed sectional materials are needed to be transported to the site, the transportation cost can be greatly reduced, the transportation cost can be conveniently transported, the transportation cost can be saved, the construction is rapid, the occupied area for construction is small, and the further expansion of the caliber of the spirally wound composite underground pipeline 10 is facilitated.

The specific form of the clamping structure 120 is various, as shown in fig. 3, and in a preferred embodiment, the first mating portion 121 includes at least one latch 123, and the second mating portion 122 includes at least one latch slot 124; in a specific arrangement, the first mating portion 121 may have only one latch 123, and correspondingly, the second mating portion 122 also has only one latch slot 124, so as to facilitate the snap-fit; the first mating portion 121 may have a plurality of latches 123, the plurality of latches 123 are integrally connected, and correspondingly, the second mating portion 122 has a plurality of locking slots 124, and the plurality of locking slots 124 are integrally connected, for example, the first mating portion 121 has two latches 123, and the second mating portion 122 has two locking slots 124, so as to improve the connection strength of the clamping structure 120 by providing the plurality of latches 123 and the plurality of locking slots 124.

In the spirally wound composite underground pipeline 10, the first matching part 121 is only the lock catch 123, and the second matching part 122 is only the lock groove 124, so that only one structural form of the clamping structure 120 is arranged on one side of the UPVC base pipe 110 along the first spiral line, and only the other structural form of the clamping structure 120 is arranged on the other side of the UPVC base pipe 110, on one hand, the arrangement of the first matching part 121 and the second matching part 122 on the UPVC base pipe 110 can be facilitated, and on the other hand, the clamping matching of the first matching part 121 and the second matching part 122 can also be facilitated.

The specific form of the clamping structure 120 is various, as shown in fig. 3, in a preferred embodiment, the first matching portion 121 and the second matching portion 122 respectively include at least one latch 123 and at least one latch slot 124, and the latch 123 of the first matching portion 121 and the latch slot 124 of the second matching portion 122 are correspondingly arranged; when specifically arranged, the lock catch 123 of the first matching part 121 corresponds to the lock groove 124 of the second matching part 122, the lock groove 124 of the first matching part 121 corresponds to the lock catch 123 of the second matching part 122, the first matching part 121 may only have one lock catch 123 and one lock groove 124, the one lock catch 123 and the one lock groove 124 are connected into a whole, correspondingly, the second matching part 122 also only has one lock catch 123 and one lock groove 124, the one lock catch 123 and the one lock groove 124 are connected into a whole, and the first matching part 121 and the second matching part 122 respectively include one lock catch 123 and one lock groove 124 by limiting, so as to facilitate the snap fit; the first mating part 121 may have a plurality of latches 123 and a plurality of locking grooves 124, the plurality of latches 123 and the plurality of locking grooves 124 are integrally connected, correspondingly, the second mating part 122 has a plurality of latches 123 and a plurality of locking grooves 124, the plurality of latches 123 and the plurality of locking grooves 124 are integrally connected, for example, the first mating part 121 has two latches 123 and two locking grooves 124, and the second mating part 122 has two latches 123 and two locking grooves 124; the plurality of latches 123 and the plurality of latch grooves 124 are provided to improve the connection strength of the snap structure 120.

In the spirally wound composite underground pipeline 10, the first matching part 121 and the second matching part 122 are limited to respectively comprise at least one lock catch 123 and at least one lock groove 124, so that two structural forms in the clamping structure 120 are respectively arranged on the UPVC base pipe 110 along two sides of the first spiral line, the clamping structure 120 form on each side of the UPVC base pipe 110 along the first spiral line is complex, the connection strength can be high, and the stability of the UPVC base pipe 110 is improved. In a specific arrangement, the clamping structure 120 may be the above-mentioned lock catch 123 and lock groove 124, or may be other structural forms that can meet the requirements, such as a plug and a slot, and a plurality of strip-shaped plugs and strip-shaped slots are arranged on the UPVC base pipe 110 along two sides of the first spiral line.

The structural forms of the lock catch 123 and the lock groove 124 are various, as shown in fig. 3, specifically, the cross-sectional development shape of the lock catch 123 along the first helical line direction is an arrow-shaped structure, the cross-sectional development shape of the lock groove 124 along the first helical line direction is an arrow-groove-shaped structure, and a rib 125 is formed on one side of the lock groove 124 away from the lock catch 123. In a specific arrangement, the structural forms of the lock catch 123 and the lock groove 124 are not limited to the above structural forms, and may be other structural forms that can meet the requirements.

In the spirally wound composite underground pipeline 10, the expanded shape of the cross section of the lock catch 123 along the first spiral line direction is an arrow-shaped structure, and the expanded shape of the cross section of the lock groove 124 along the first spiral line direction is an arrow-groove-shaped structure, so that the arrow-groove-shaped structure layer can be directly buckled on the arrow-shaped structure layer from one side along the extending direction of the UPVC base pipe 110, or the arrow-shaped structure layer can be directly inserted into the arrow-groove-shaped structure layer from one side along the extending direction of the UPVC base pipe 110, so as to more conveniently realize the clamping and matching of the lock catch 123 and the lock groove 124; the rib 125 is formed on the side of the locking groove 124 away from the locking catch 123, thereby improving the structural strength of the locking groove 124. When the fastener 123 is specifically arranged, the fastener comprises a strip-shaped first fastener 1231 and a triangular-column-shaped second fastener 1232, the first fastener 1231 extends outwards along the radial direction of the UPVC base pipe 110, the second fastener 1232 is connected with the first fastener 1231, the tip of the second fastener 1232 is far away from the first fastener 1231, and the cross-sectional expansion shapes of the first fastener 1231 and the second fastener 1232 along the first spiral line direction are arrow-shaped structures; the first buckle 1231 and the second buckle 1232 may be integrally formed, and the connection manner of the first buckle 1231 and the second buckle 1232 is not limited thereto, and may be other manners capable of meeting the requirement. Correspondingly, the locking groove 124 comprises a strip-shaped first groove body 1241 and a triangular groove-shaped second groove body 1242, the first groove body 1241 extends outwards along the radial direction of the UPVC base pipe 110, the second groove body 1242 is communicated with the first groove body 1241, the tip of the second groove body 1242 is far away from the first groove body 1241, and the cross-sectional development shapes of the first groove body 1241 and the second groove body 1242 along the first spiral line direction are arrow groove-shaped structures; the rib plate 125 is formed on one side of the tip end of the second slot body 1242, which is far away from the first slot body 1241, the rib plate 125 may be strip-shaped or tapered, and the first slot body 1241, the second slot body 1242 and the rib plate 125 may be formed at one time, and of course, the forming manner of the first slot body 1241, the second slot body 1242 and the rib plate 125 is not limited thereto, and other manners capable of meeting the requirements may also be used.

In order to improve the sealing performance of the inner pipe 100, as shown in fig. 3, more specifically, the sealing structure 400 includes a sealing member 410, a sealing groove 126 is formed at one side of the locking groove 124 near the end of the lock catch 123, the sealing groove 126 is filled with the sealing member 410, and the sealing member 410 abuts against the sealing groove 126 and the lock catch 123. In a specific arrangement, the sealing element 410 may be a sealing strip, and the sealing strip may be glued in the sealing groove 126, and of course, the structure and arrangement of the sealing element 410 are not limited thereto, and may also be in other forms that can meet the requirement. The sealing structure 400 also includes a hot melt adhesive 420, the hot melt adhesive 420 being disposed on the opposing surfaces of the latch groove 124 and the UPVC base pipe 110 to seal the latch groove 124 and the UPVC base pipe 110. When specifically setting up, hot melt adhesive 420 can set up on the UPVC base tube 110 between two hasp 123, and hot melt adhesive 420 can also set up respectively on the UPVC base tube 110 between two hasp 123 and keep away from the hasp 123 of UPVC base tube side and keep away from one side of UPVC base tube side, and in order to avoid overflowing behind the hot melt adhesive pressurized, hasp 123 can have the recess or the cockscomb structure of keeping away from UPVC base tube 110 to improve the degree of adhesion. The sealing structure 400 is not limited to the hot melt adhesive 420, and may be other adhesives having an adhesive sealing effect.

In the spirally wound composite underground pipe 10, the sealing groove 126 is formed at one side of the locking groove 124 close to the end of the locking buckle 123, the sealing element 410 is filled in the sealing groove 126, and the sealing element 410 is limited to abut against the opposite surface of the sealing groove 126 and the locking buckle 123 when the locking groove 124 and the locking buckle 123 are clamped, so that the spirally wound inner pipe 100 is sealed, and the sealing performance of the inner pipe 100 is improved. In a specific arrangement, the sealing element 410 is not limited to be disposed in the sealing groove 126, and may be formed with a groove on one of the two side surfaces of the UPVC base pipe 110 along the first spiral line and a sealing ring, or formed with a groove on both of the two side surfaces of the UPVC base pipe 110 along the first spiral line and a sealing ring, or formed with a cemented gasket on one of the two side surfaces of the UPVC base pipe 110 along the first spiral line, or formed with a cemented gasket on both of the two side surfaces of the UPVC base pipe 110 along the first spiral line, and directly sealed when the UPVC base pipe 110 forms a spirally wound shape after the sealing element 410 is disposed.

The structure of the inner pipe 100 has various structures, and in a preferred embodiment, the UPVC base pipe 110 is formed by spirally winding a strip-shaped UPVC profile, the first fitting part 121 and the second fitting part 122 are provided on the strip-shaped UPVC profile, and the first fitting part 121 and the second fitting part 122 are respectively located along both sides of the strip-shaped UPVC profile in the width direction thereof and near the edge of the strip-shaped UPVC profile; the first and

second mating parts

121 and 122 are located on the same surface of the strip-shaped UPVC profile, and the first and

second mating parts

121 and 122 extend out of this surface in a direction perpendicular to the strip-shaped UPVC profile.

In the spirally wound composite underground pipeline 10, the UPVC base pipe 110 is formed by spirally winding a strip-shaped UPVC profile by limiting the UPVC base pipe 110, so that the spirally wound UPVC base pipe 110 can be formed more conveniently and quickly; the first matching part 121 and the second matching part 122 are arranged on two sides of the strip-shaped UPVC profile along the width direction of the strip-shaped UPVC profile, and the first matching part 121 and the second matching part 122 extend out of the same surface of the strip-shaped UPVC profile along the direction perpendicular to the strip-shaped UPVC profile, so that when the UPVC base pipe 110 extends along the first spiral line, the first matching part 121 and the second matching part 122 can be close to each other and are in clamping fit. When specifically arranged, the first matching part 121 and the second matching part 122 are integrally formed with the strip-shaped UPVC profile, for example, the first matching part 121 and the second matching part 122 are integrally formed with the strip-shaped UPVC profile through an injection molding process, and the first matching part 121, the second matching part 122 and the strip-shaped UPVC profile can also be formed by stamping a single piece of UPVC profile; of course, the connection manner of the first matching portion 121 and the second matching portion 122 and the strip-shaped UPVC profile is not limited to this, and other manners may be adopted as long as the requirements can be satisfied. For the convenience of clamping cooperation, the edge of banded UPVC section bar is provided with the cooperation structure, and this cooperation structure includes the first wedge-shaped face of banded UPVC section bar one side edge, and this cooperation structure still includes the second wedge-shaped face of banded UPVC section bar opposite side edge, and first wedge-shaped face and second wedge-shaped face cooperate for the joint cooperation is comparatively convenient and fast.

The structure of the clamping structure 120 has a plurality of forms, and specifically, the number of the clamping structures 120 is one group, and the first matching portion 121 and the second matching portion 122 respectively extend along the first spiral line. When the UPVC base pipe 110 is formed by spirally winding the strip-shaped UPVC section bar, the first matching part 121 and the second matching part 122 extend along a first spiral line respectively. In the above spirally wound composite underground pipe 10, the number of the clamping structures 120 is limited to be a group, and the first matching parts 121 and the second matching parts 122 in the clamping structures 120 are respectively long strip-shaped structures extending along the first spiral line, so that the fixation of the whole UPVC base pipe 110 can be conveniently and rapidly realized through one-time clamping operation.

The clamping structures 120 have various structural forms, specifically, the number of the clamping structures 120 is multiple, the multiple groups of clamping structures 120 are arranged on the UPVC base pipe 110 along a first spiral line, and each clamping structure 120 is located on any two adjacent parts of the UPVC base pipe 110 with opposite extending directions. When the UPVC base pipe is specifically arranged, a plurality of first matching parts 121 and a plurality of second matching parts 122 are arranged on the strip-shaped UPVC section bar, the first matching parts 121 and the second matching parts 122 extend along the length direction of the strip-shaped UPVC section bar, after the strip-shaped UPVC section bar is spirally wound to form the UPVC base pipe 110, the first matching parts 121 and the second matching parts 122 are respectively arranged along a first spiral line, the first matching parts 121 and the second matching parts 122 are located on two sides of the UPVC base pipe 110 and are respectively located on two adjacent parts of the UPVC base pipe 110, the first matching parts 121 and the second matching parts 122 are in clamping fit with each other, so that the two adjacent parts of the UPVC base pipe 110, which are opposite in extending direction, are relatively fixed.

In the spiral winding composite underground pipeline 10, the first matching part 121 and the second matching part 122 are arranged on any two adjacent UPVC base pipes 110 in opposite extending directions, the first matching part 121 and the second matching part 122 are matched with each other in a clamping manner to form the clamping structure 120, and a plurality of groups of clamping structures 120 are arranged on the UPVC base pipes 110 along a first spiral line to fix the UPVC base pipes 110, so that the inner layer pipeline 100 is high in structural strength and good in stability. In a specific arrangement, the number of clamping structures 120 is multiple, for example, 50, 100, 150, 200, etc., and the specific number of clamping structures 120 may be determined according to the actual condition of the UPVC base pipe 110, for example, when the UPVC base pipe 110 is longer, the number of clamping structures 120 may be increased appropriately. The multiple sets of clamping structures 120 are arranged on the UPVC base pipe 110, and the multiple sets of clamping structures 120 are arranged along a first spiral line, the clamping structures 120 can be symmetrically arranged in the circumferential direction of the UPVC base pipe 110, multiple clamping structures 120 can be uniformly arranged in the circumferential direction of the UPVC base pipe 110, each clamping structure 120 is located on any two adjacent UPVC base pipes 110 with opposite extension directions, when the clamping structures are arranged, the multiple sets of clamping structures 120 can be uniformly arranged along the first spiral line, the clamping structures 120 can be properly increased in some areas to strengthen the connection strength, for example, the clamping structures 120 can be increased in the bending area. The multiple sets of clamping structures 120 are uniformly arranged on the UPVC base pipe 110 along the first spiral line direction, and a set or multiple sets of clamping structures 120 can be arranged on any two adjacent portions of the UPVC base pipe 110, except for the end portion of the UPVC base pipe 110, of the two side surfaces of the UPVC base pipe 110 extending along the first spiral line direction, for example, two sets of clamping structures 120 can be arranged on any two adjacent portions of the UPVC base pipe 110, and four sets of clamping structures 120 can be arranged on any two adjacent portions of the UPVC base pipe 110. Of course, the arrangement of the plurality of clamping structures 120 on the UPVC base pipe 110 is not limited thereto, and may be in other structural forms that can meet the requirement.

In order to improve the structural strength of the inner-layer pipeline 100, as shown in fig. 3, in a preferred embodiment, the outer surface of the UPVC base pipe 110 is provided with at least one reinforcing rib 127, the reinforcing rib 127 is arranged around the UPVC base pipe 110 along a first spiral line, when the UPVC base pipe is specifically arranged, the number of the reinforcing ribs 127 may be one, two, three or more, the specific number of the reinforcing ribs 127 may be determined according to the actual situation of the spirally wound composite underground pipeline 10, the strip-shaped UPVC profile is provided with the reinforcing rib 127 extending along the length direction thereof, the length of the reinforcing rib 127 is equal to or slightly less than the length of the strip-shaped UPVC profile, and after the strip-shaped UPVC profile is spirally wound to form the UPVC base pipe 110, the reinforcing.

In the above spiral-wound composite underground pipe 10, the reinforcing rib 127 is disposed on the outer surface of the UPVC base pipe 110, and the reinforcing rib 127 is defined to surround the UPVC base pipe 110 along a first spiral line, so as to improve the supporting strength of the UPVC base pipe 110, so that the structural strength of the inner pipe 100 is high, and the structural stability of the whole spiral-wound composite underground pipe 10 is improved. In a specific arrangement, the stiffener 127 and the UPVC base pipe 110 may be integrally formed, for example, the stiffener 127 and the strip-shaped UPVC profile may be integrally formed by an injection molding process, and the stiffener 127 and the strip-shaped UPVC profile may also be formed by stamping a single UPVC profile. Of course, the connection mode of the reinforcing rib 127 and the UPVC base pipe 110 is not limited to this, and other modes can be adopted as required.

The steel strip 210 has various structural forms, as shown in fig. 3, specifically, the section development shape of the reinforcing ribs 127 along the first spiral direction is a T-shaped structure, the section development shape of the steel strip 210 along the first spiral direction is a W-shaped structure, the steel strip 210 covers the clamping structure 120, and both ends of the steel strip 210 abut against two portions of the reinforcing ribs 127 close to the clamping structure 120 respectively. When specifically setting up, set up the strengthening rib 127 that extends along its length direction on the banding UPVC section bar, this strengthening rib 127 is T style of calligraphy structure at the length direction's of following banding UPVC section bar cross sectional shape, behind banding UPVC section bar spiral winding formation UPVC base tube 110, strengthening rib 127 extends along first helix, first cooperation portion 121 and second cooperation portion 122 looks joint cooperation, then establish steel band 210 cover on joint structure 120, when joint structure 120 is the stripe structure who extends along first helix, steel band 210 can be a helical structure who extends along first helix, steel band 210 can also be a plurality of heliciform monomers that extend by first helix and constitute. In the above spiral-wound composite underground pipe 10, the reinforcing ribs 127 and the steel strip 210 are limited to be unfolded along the section of the first spiral line direction, the steel strip 210 is limited to be covered on the clamping structure 120, and two ends of the steel strip 210 abut against the two reinforcing ribs 127 close to the clamping structure 120 respectively, so that the clamping structure 120 is protected, the structural strength of the inner-layer pipe 100 is high, and the structural stability of the whole spiral-wound composite underground pipe 10 is improved.

The structural form of the steel belt 210 has various forms, and specifically, the section of the reinforcing rib 127 along the first spiral direction is unfolded to be in a straight structure, the section of the steel belt 210 along the radial direction of the UPVC base pipe 110 is in a zigzag structure, and the steel belt 210 covers at least one clamping structure 120 and at least one part of the reinforcing rib 127 adjacent to the clamping structure 120. When specifically setting up, set up the strengthening rib 127 that extends along its length direction on the banding UPVC section bar, this strengthening rib 127 is the style of calligraphy structure at the length direction's of following banding UPVC section bar cross sectional shape, behind banding UPVC section bar spiral winding formation UPVC parent tube 110, strengthening rib 127 extends along first helix, first cooperation portion 121 and second cooperation portion 122 looks joint cooperation, then establish steel band 210 cover on joint structure 120, when joint structure 120 is the stripe structure who extends along first helix, steel band 210 can be a helical structure who extends along first helix, steel band 210 can also be a plurality of heliciform monomers that extend by first helix and constitute. In the spirally wound composite underground pipeline 10, the reinforcing ribs 127 and the steel strip 210 are limited to be unfolded along the section of the first spiral direction, and the steel strip 210 is limited to cover at least one clamping structure 120 and at least one part of the reinforcing ribs 127 close to the clamping structure 120, so that the plurality of clamping structures 120 are protected at the same time, the structural strength of the inner-layer pipeline 100 is higher, and the structural stability of the whole spirally wound composite underground pipeline 10 is improved.

The spiral-wound composite underground pipeline 10 has various shapes, and in a preferred embodiment, the inner-layer pipeline 100 can be of a cylindrical structure, so that the inner diameter is larger, the water discharge capacity of the spiral-wound composite underground pipeline 10 is improved, the inner wall of the inner-layer pipeline 100 is smooth, the resistance is small, and the flow can not be influenced under the condition of reducing the diameter; the outer pipe 300 may be a square tubular structure to increase the amount of concrete 310 of the outer pipe 300, increase the bearing capacity of the outer pipe 300, and further allow the spirally wound composite underground pipe 10 to better protect the inner pipe 100 and prevent water and soil loss. In a particular arrangement, the inner pipe 100 may be of a circular configuration and the outer pipe 300 may be of a square configuration, having a planar bottom surface, a top plate and two side surfaces. The shapes of the inner pipe 100 and the outer pipe 300 are not limited thereto, and may be other shapes. In one embodiment, the UPVC base pipe 110 of the inner pipe 100 is set to have a thickness of 2.7mm, the UPVC base pipe 110 is provided with two reinforcing ribs 127, the clamping structure 120 is provided with a 304 stainless steel band 210 having a thickness of 2.4mm, the outer pipe 300 is made of C30 concrete 310, the outer profile of the outer pipe 300 is regular octagon, the wall thickness of the thinnest part is 334mm, and at this time, the caliber of the spirally wound composite underground pipe 10 can reach 4000 mm. The spirally wound composite underground pipeline 10 can be formed in a composite manner in an operation tunnel: the prefabricated inner-layer pipeline 100 is placed in the tunnel, the bottom of the inner-layer pipeline 100 is heightened by using a cushion block, the reinforcing layer 200 is installed, and concrete 310 is poured to form a complete spiral winding composite underground pipeline 10.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A spirally wound composite underground conduit, comprising:

2. The helically wound composite underground conduit of claim 1, wherein the first mating portion comprises at least one locking catch and the second mating portion comprises at least one locking groove.

3. The helically wound composite underground conduit of claim 1, wherein the first mating portion and the second mating portion each comprise at least one locking catch and at least one locking groove, and the locking catch of the first mating portion and the locking groove of the second mating portion are disposed in correspondence.

4. The spirally wound composite underground pipeline according to claim 2 or 3, wherein the lock catch is in an arrow-shaped structure along the cross section development shape in the first spiral line direction, the lock groove is in an arrow-groove-shaped structure along the cross section development shape in the first spiral line direction, and a rib plate is formed on one side of the lock groove away from the lock catch.

5. The spiral wound composite underground pipe of claim 4, wherein the sealing structure comprises a sealing element and a hot melt adhesive, wherein a sealing groove is formed in one side of the locking groove close to the end of the lock catch, the sealing groove is filled with the sealing element, the sealing element abuts against the sealing groove and the surface of the lock catch opposite to the locking groove, and the hot melt adhesive is arranged on the surface of the locking groove opposite to the UPVC base pipe.

6. The spirally wound composite underground pipeline of claim 1, wherein the UPVC base pipe is formed by spirally winding a strip-shaped UPVC profile, and the first mating portion and the second mating portion are disposed at both sides of the strip-shaped UPVC profile in a width direction of the strip-shaped UPVC profile and extend out of the same surface of the strip-shaped UPVC profile in a direction perpendicular to the strip-shaped UPVC profile.

7. The helically wound composite underground conduit of claim 6, wherein the number of clamping structures is one, and the first mating portion and the second mating portion each extend along the first helical line.

8. The spirally wound composite underground pipeline of claim 6, wherein the number of the clamping structures is multiple, the multiple groups of clamping structures are arranged on the UPVC base pipe along the first spiral line, and each clamping structure is positioned on any two adjacent UPVC base pipes in opposite extending directions.

9. The helically wound composite subterranean conduit of claim 1, wherein an outer surface of the UPVC base pipe has at least one reinforcing rib disposed around the UPVC base pipe along the first helical line.

10. The spirally wound composite underground pipeline as claimed in claim 9, wherein the reinforcing ribs are T-shaped structures along the cross-sectional development shape of the first spiral line direction, the steel belt is W-shaped structures along the cross-sectional development shape of the first spiral line direction, the steel belt covers the clamping structure, and both ends of the steel belt abut against the two portions of the reinforcing ribs close to the clamping structure respectively.

11. The helically wound composite underground pipe of claim 9, wherein the reinforcing ribs have a generally straight cross-sectional configuration along the first helical line, the steel strip has a generally inverted v-shaped cross-sectional configuration along the first helical line, and the steel strip covers at least one of the clamping structures and at least a portion of the reinforcing ribs adjacent the clamping structures.

12. The helically wound composite underground pipe of claim 1, wherein the inner pipe is a cylindrical structure and the outer pipe is a square cylindrical structure.