Corrugated connecting pipe

Abstract

The utility model provides a corrugated connecting pipe which comprises a corrugated pipe, connecting flanges are arranged at the two ends of the corrugated pipe, the corrugated pipe comprises a corrugated section, the corrugated section comprises a plurality of peak rings and valley rings, and the lowest positions of the valley rings at the ends of the corrugated pipe extend in the axial direction of the corrugated pipe to form a sleeving section. The connecting flange comprises a disc body and a connecting pipe located at one end of the disc body, a sealing groove is formed in the outer wall of the end, away from the disc body, of the connecting pipe, and a sealing ring is arranged in the sealing groove; the connecting pipe is inserted into the sleeving section, the tail end of the connecting pipe reaches the position, connected with the sleeving section, of the inner side wall of the valley ring, the tail end of the connecting pipe is expanded to form a horn mouth and abuts against the inner side wall of the valley ring, and the sealing ring is in sealing fit with the inner side wall of the valley ring or the inner side wall of the sleeving section; a blocking step is arranged at the joint of the connecting pipe and the disc body, and the end face of the sleeving section abuts against the blocking step. The disc body is provided with a plurality of fixing holes which are evenly distributed in the axial direction of the disc body, and a hooping inclined face is arranged at the junction of one face, facing the other disc body, of the disc body and the outer edge of the disc body. The utility model has the advantages of not only being fixed through the bolt, but also being butted through the quick-release buckle (pipe hoop).

Description

Technical Field

[0001] This utility model relates to the field of corrugated pipes, and specifically to a corrugated connecting pipe. Background Technology

[0002] In rigid piping systems, corrugated pipes serve as a buffer zone to absorb pipe connection problems caused by installation errors, temperature, and other factors. Traditionally, the flanges at both ends of corrugated pipes are connected by bolts or quick-release couplings (pipe clamps). Bolted connections are more cumbersome to install and remove, but offer higher connection strength. Quick-release couplings (pipe clamps) are easier to install and remove, but are often suitable for pipes with lower pressure ratings. Therefore, current corrugated pipe installations cannot simultaneously accommodate both connection methods, making it difficult to quickly select the installation method based on the actual installation situation (such as situations requiring frequent disassembly and reassembly, where quick-release couplings (pipe clamps) are more suitable), thus causing some installation difficulties. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a corrugated connecting pipe that can be fixed by bolts or connected by quick-release buckles (pipe clamps).

[0004] To address the above problems, the following technical solution is provided: A corrugated connecting pipe, comprising a corrugated pipe with connecting flanges at both ends, the corrugated pipe including a corrugated section, the corrugated section including several peak rings and valley rings, the lowest point of the valley ring at the end of the corrugated pipe extending axially to form a sleeve section; the connecting flange including a disc body and a connecting pipe located at one end of the disc body, the outer wall of the end of the connecting pipe away from the disc body having a sealing groove, the sealing groove having a sealing ring; the connecting pipe is inserted into the sleeve section and its end reaches the inner sidewall of the valley ring connected to the sleeve section, the end of the connecting pipe expands to form a flared mouth and abuts against the inner sidewall of the valley ring, the sealing ring sealingly fitting against the inner sidewall of the valley ring or the inner sidewall of the sleeve section; a blocking step is provided at the connection between the connecting pipe and the disc body, the end face of the sleeve section abuts against the blocking step; the disc body has several fixing holes evenly distributed along its axial direction, and a clamping slope is provided at the junction of the side of the disc body facing another disc body and the outer edge of the disc body.

[0005] In the above structure, during assembly, after the connecting pipe is inserted into the sleeve section, the end of the connecting pipe is turned outward to form a flared structure by an expansion device or a spinning device, and it abuts against the inner wall of the valley ring to prevent detachment. At the same time, the sealing ring is used for auxiliary sealing, achieving a weld-free connection. Meanwhile, the fixing hole can be installed with bolts, while the clamping bevel can be installed with quick-release buckles (pipe clamps). The two installation methods can be freely selected according to the actual installation occasion, which makes the installation more flexible.

[0006] The present invention is further configured such that the side of the disc body facing away from the other disc body is provided with an annular end face groove, and the rotation radius of the end face groove is smaller than the virtual rotation radius of the fixing hole from the center of the disc body.

[0007] In the above structure, the end face groove is used to install the sealing ring when the pipeline is connected; the gyration radius of the end face groove is smaller than the virtual gyration radius of the fixing hole from the center of the disc, which ensures that the bolt is located outside the sealing ring when fixed by bolts, thus avoiding leakage.

[0008] The present invention is further provided that the side of the disc body facing away from the other disc body is provided with an annular positioning ring that is convex or concave, and the annular positioning ring is concentrically arranged with the end face groove.

[0009] In the above structure, during installation, the pipe flange will be equipped with an end face positioning ring corresponding to the annular positioning ring to achieve accurate alignment. If the annular positioning ring of the connecting flange is convex, the end face positioning ring of the pipe flange is concave; if the annular positioning ring of the connecting flange is concave, the end face positioning ring of the pipe flange is convex.

[0010] The present invention is further configured such that the rotation radius of the annular positioning ring is the same as the virtual rotation radius of the fixing hole at the center of the disc.

[0011] In the above structure, the fixing hole is drilled through an annular positioning ring to avoid the offset arrangement caused by the two parts shifting, effectively ensuring the compactness of the outer diameter of the connecting flange.

[0012] The present invention is further configured such that the cross-section of the annular positioning ring is trapezoidal; when the annular positioning ring is convex outward, the short side of its trapezoidal cross-section is located in the convex direction, and when the annular positioning ring is concave inward, the short side of its trapezoidal cross-section is located in the concave direction.

[0013] In the above structure, the trapezoidal cross-section annular positioning ring facilitates rapid alignment.

[0014] The present invention is further configured such that the end face of the sleeve segment and the blocking step are welded together by a weld.

[0015] In the above structure, an auxiliary connection can be made between the end face of the socket section and the blocking step by welding as needed, making it suitable for harsher working environments.

[0016] The present invention is further configured such that the fixing hole includes a through hole section and a countersunk section, wherein the countersunk section is located on the side of the disc body facing the other disc body.

[0017] In the above structure, the countersunk section is used to accommodate the bolt head or nut.

[0018] The present invention is further configured such that the countersunk section is formed on the end face of the disc body and the clamping inclined surface.

[0019] In the above structure, the recessed countersunk section can prevent the bolt head or nut from only receiving partial support due to the presence of the clamping slope, thus avoiding affecting the installation.

[0020] The present invention is further configured such that the top of the peak ring and the bottom of the valley ring are arc-shaped.

[0021] In the above structure, the top of the peak ring and the bottom of the valley ring are preferably semi-circular.

[0022] The present invention is further configured such that both the corrugated pipe and the connecting flange are made of stainless steel.

[0023] The above structure effectively ensures its corrosion resistance, making it suitable for various occasions and for conveying various corrosive media.

[0024] The beneficial effects of this utility model are as follows: During assembly, after the connecting pipe is inserted into the sleeve section, the end of the connecting pipe is turned outward to form a flared structure by an expansion device or a spinning device, and it abuts against the inner side wall of the valley ring to prevent detachment. At the same time, the sealing ring is used for auxiliary sealing, realizing a weld-free connection. Meanwhile, the fixing hole can be installed with bolts, while the clamping bevel can be installed with quick-release buckles (pipe clamps). The two installation methods can be freely selected according to the actual installation occasion, which makes the installation more flexible. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0026] Figure 2 This is a schematic diagram of the full-section orthographic projection structure of this utility model.

[0027] Figure 3 This is a schematic diagram of the full sectional three-dimensional structure of this utility model.

[0028] Figure 4 This is a full-section exploded three-dimensional structural diagram of the present invention.

[0029] Figure 5 This utility model Figure 2 A magnified structural diagram of part A.

[0030] The labels in the diagram mean: 10-Corrugated pipe; 11-Corrugated section; 111-Peak ring; 112-Valley ring; 12-Socket section; 20-Connecting flange; 21-Disc body; 211-Fixing hole; 2111-Through hole section; 2112-Counterhead section; 212-Clamping bevel; 213-End face groove; 214-Annular positioning ring; 22-Connecting pipe; 221-Sealing groove; 222-Sealing ring; 223-Flare mouth; 23-Blocking step; a-Weld. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] refer to Figures 1 to 5 ,like Figures 1 to 5 The corrugated connecting pipe shown includes a corrugated pipe 10, with connecting flanges 20 at both ends. The corrugated pipe 10 includes a corrugated section 11, which includes a plurality of peak rings 111 and valley rings 112. The lowest point of the valley rings 112 at the end of the corrugated pipe 10 extends axially towards the corrugated pipe 10 to form a sleeve section 12. The connecting flange 20 includes a disc body 21 and a connecting pipe 22 located at one end of the disc body 21. The outer wall of the end of the connecting pipe 22 away from the disc body 21 is provided with a sealing groove 221, and a sealing ring 222 is provided in the sealing groove 221. The connecting pipe 22 is inserted into the sleeve section 111. The connecting pipe 22 extends to the inner wall of the valley ring 112 connected to the sleeve section 12. The end of the connecting pipe 22 expands to form a flared mouth 223 and abuts against the inner wall of the valley ring 112. The sealing ring 222 seals against the inner wall of the valley ring 112 or the inner wall of the sleeve section 12. A blocking step 23 is provided at the connection between the connecting pipe 22 and the disc body 21. The end face of the sleeve section 12 abuts against the blocking step 23. The disc body 21 is provided with a plurality of fixing holes 211 evenly distributed along its axial direction. A clamping inclined surface 212 is provided at the junction of the side of the disc body 21 facing another disc body 21 and the outer edge of the disc body 21.

[0033] In the above structure, during assembly, after the connecting pipe 22 is inserted into the sleeve section 12, the end of the connecting pipe 22 is turned outward to form a flared mouth 223 structure by an expansion device or a spinning device, and it abuts against the inner side wall of the valley ring 112 to prevent detachment. At the same time, the sealing ring 222 is used for auxiliary sealing to achieve a weld-free connection. Meanwhile, the fixing hole 211 can be installed with bolts (not shown in the figure), while the clamping bevel 212 can be installed by quick-release buckles (pipe clamps) (not shown in the figure). The two installation methods can be freely selected according to the actual installation occasion, which makes the installation more flexible.

[0034] In this embodiment, the side of the disc 21 facing away from the other disc 21 is provided with an annular end face groove 213, and the radius of rotation of the end face groove 213 is smaller than the virtual radius of rotation of the fixing hole 211 from the center of the disc 21.

[0035] In the above structure, when the pipeline is connected, the end face groove 213 is used to install the sealing ring (not shown in the figure); the gyration radius of the end face groove 213 is smaller than the virtual gyration radius of the fixing hole 211 from the center of the disc 21, which can ensure that when fixed by bolts (not shown in the figure), the bolts (not shown in the figure) are located outside the sealing ring (not shown in the figure), thus avoiding leakage.

[0036] In this embodiment, the side of the disc body 21 facing away from the other disc body 21 is also provided with an annular positioning ring 214 that is convex or concave, and the annular positioning ring 214 is concentrically arranged with the end face groove 213.

[0037] In the above structure, during installation, the pipe flange (not shown in the figure) will be equipped with an end face positioning ring (not shown in the figure) corresponding to the annular positioning ring 214 to achieve accurate alignment. If the annular positioning ring 214 of the connecting flange 20 is convex, the end face positioning ring (not shown in the figure) of the pipe flange (not shown in the figure) is concave. If the annular positioning ring 214 of the connecting flange 20 is concave, the end face positioning ring (not shown in the figure) of the pipe flange (not shown in the figure) is convex.

[0038] In this embodiment, the radius of rotation of the annular positioning ring 214 is the same as the virtual radius of rotation of the fixing hole 211 from the center of the disk body 21.

[0039] In the above structure, when the fixing hole 211 is drilled, it passes through the annular positioning ring 214 to avoid the offset arrangement caused by the two moving apart, effectively ensuring the compactness of the outer diameter of the connecting flange 20.

[0040] In this embodiment, the cross-section of the annular positioning ring 214 is trapezoidal; when the annular positioning ring 214 is convex, the short side of its trapezoidal cross-section is located in the convex direction, and when the annular positioning ring 214 is concave, the short side of its trapezoidal cross-section is located in the concave direction.

[0041] In the above structure, the trapezoidal cross-section annular positioning ring 214 facilitates rapid alignment.

[0042] In this embodiment, the end face of the sleeve section 12 and the blocking step 23 are welded together by weld seam a.

[0043] In the above structure, an auxiliary connection can be made between the end face of the socket section 12 and the blocking step 23 by welding as needed, so that it can be used in harsher working environments.

[0044] In this embodiment, the fixing hole 211 includes a through hole section 2111 and a countersunk section 2112, wherein the countersunk section 2112 is located on the side of the disc 21 facing the other disc 21.

[0045] In the above structure, the countersunk section 2112 is used to accommodate the screw head (not shown in the figure) or nut (not shown in the figure) of the bolt (not shown in the figure).

[0046] In this embodiment, the countersunk section 2112 is formed on the end face of the disc body 21 and the clamping inclined surface 212.

[0047] In the above structure, the recessed countersunk section 2112 can prevent the bolt head (not shown in the figure) or nut (not shown in the figure) from only receiving partial support due to the presence of the clamping inclined surface 212, thus affecting the installation.

[0048] In this embodiment, the top of the peak ring 111 and the bottom of the valley ring 112 are arc-shaped.

[0049] In the above structure, the top of the peak ring 111 and the bottom of the valley ring 112 are preferably semi-circular.

[0050] In this embodiment, both the corrugated pipe 10 and the connecting flange 20 are made of stainless steel.

[0051] The above structure effectively ensures its corrosion resistance, making it suitable for various occasions and for conveying various corrosive media.

[0052] The beneficial effects of this utility model are as follows: During assembly, after the connecting pipe 22 is inserted into the sleeve section 12, the end of the connecting pipe 22 is turned outward to form a flared mouth 223 structure by an expansion device or a spinning device, and it abuts against the inner side wall of the valley ring 112 to prevent detachment. At the same time, the sealing ring 222 is used for auxiliary sealing to achieve a weld-free connection. Meanwhile, the fixing hole 211 can be installed with bolts, while the clamping bevel 212 can be installed by quick-release buckles (pipe clamps). The two installation methods can be freely selected according to the actual installation occasion, which makes the installation more flexible.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A corrugated connecting pipe, comprising a corrugated pipe, wherein connecting flanges are provided at both ends of the corrugated pipe, the corrugated pipe includes a corrugated section, the corrugated section including a plurality of peak rings and valley rings, characterized in that: The lowest point of the valley ring at the end of the corrugated pipe extends axially to form a sleeve section; the connecting flange includes a disc body and a connecting pipe located at one end of the disc body, the outer wall of the end of the connecting pipe away from the disc body is provided with a sealing groove, and a sealing ring is provided in the sealing groove; the connecting pipe is inserted into the sleeve section and its end reaches the inner side wall of the valley ring connected to the sleeve section, the end of the connecting pipe expands to form a flared mouth and abuts against the inner side wall of the valley ring, and the sealing ring seals against the inner side wall of the valley ring or the inner side wall of the sleeve section; a blocking step is provided at the connection between the connecting pipe and the disc body, and the end face of the sleeve section abuts against the blocking step; the disc body is provided with a number of fixing holes evenly distributed along its axial direction, and a clamping slope is provided at the junction of the side of the disc body facing another disc body and the outer edge of the disc body.

2. The corrugated connecting pipe according to claim 1, characterized in that: The side of the disc facing away from the other disc has an annular end face groove, and the radius of rotation of the end face groove is smaller than the virtual radius of rotation of the fixing hole from the center of the disc.

3. A corrugated connecting pipe according to claim 1 or 2, characterized in that: The side of the disc facing away from the other disc is also provided with an annular positioning ring that is convex or concave, and the annular positioning ring is concentrically arranged with the end face groove.

4. A corrugated connecting pipe according to claim 3, characterized in that: The radius of rotation of the annular positioning ring is the same as the virtual radius of rotation of the fixing hole at the center of the disc.

5. A corrugated connecting pipe according to claim 3, characterized in that: The cross-section of the annular positioning ring is trapezoidal; when the annular positioning ring is convex outward, the short side of its trapezoidal cross-section is located in the convex direction, and when the annular positioning ring is concave inward, the short side of its trapezoidal cross-section is located in the concave direction.

6. A corrugated connecting pipe according to claim 1, characterized in that: The end face of the socket section is welded to the blocking step by a weld.

7. A corrugated connecting pipe according to claim 1, characterized in that: The fixing hole includes a through section and a countersunk section, with the countersunk section located on the side of the disc facing the other disc.

8. A corrugated connecting pipe according to claim 7, characterized in that: The countersunk section is located on the end face of the disc and the clamping inclined surface.

9. A corrugated connecting pipe according to claim 1, characterized in that: The top of the peak ring and the bottom of the valley ring are arc-shaped.

10. A corrugated connecting pipe according to claim 1, characterized in that: The bellows and connecting flanges are all made of stainless steel.

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