A two-way socket joint pipe

Abstract

The present application relates to a two-way socket joint pipe, comprising a two-way socket joint pipe body, wherein two two-way socket joint pipe bodies are symmetrically arranged, and the two two-way socket joint pipe bodies are connected and sealed by a connecting assembly, wherein the connecting assembly comprises a sealing ring, a special-shaped edge sealing ring, and an elastic edge sealing sleeve. The sealing ring is clamped between the end faces of the two two-way socket joint pipe bodies, and a sealing gap is formed between the two two-way socket joint pipe body end faces located on the outer ring of the sealing ring. The special-shaped edge sealing ring comprises a sealing clamp clamped within the sealing gap and a special-shaped edge sealing body arranged around the outer walls of the two two-way socket joint pipe bodies. The elastic edge sealing sleeve is sleeved on the outer walls of the two two-way socket joint pipe bodies and is clamped with the special-shaped edge sealing body in an interference fit. The present application has the effect of improving the sealing performance and installation convenience of the two-way socket joint pipe while ensuring the firmness during installation.

Description

Technical Field

[0001] The present application relates to the technical field of two-way socket joint pipes, and in particular to a two-way socket joint pipe. Background Art

[0002] Pipes with two-way socket-and-spigot joints are widely used in liquid and gas transport systems in construction, industry, and municipal administration. These piping systems typically consist of a socket and a spigot, allowing pipe extensions or branches to be created through the socket-and-spigot connection. The socket is one end of the pipe, with a groove or opening that receives the spigot; the spigot is the other end, designed to fit into the socket. This connection facilitates installation and removal and provides a relatively reliable seal.

[0003] Pipeline sealing with two-way socket joints usually relies on mechanical sealing: using sealing rings or gaskets, tightening by bolts or other mechanical means to achieve sealing and bonding connection: using specific adhesives or sealants to fill the gaps in the pipe joints to form a seal.

[0004] Although the existing technology provides a variety of pipe connection and sealing methods, there are still some shortcomings in practical applications. For example, during use, the long-term flushing of liquid in the pipeline will cause the liquid to penetrate the inner wall of the metal pipe through the gaps between different materials, resulting in corrosion failure and corrosion of the pipe wall, affecting the service life of the pipeline and polluting the liquid transported in the pipeline. At the same time, the processing requirements of socket and spigot-matching plugs are higher, and dimensional deviations or insufficient installation force can easily lead to leakage and loosening of the pipe connection, increasing the difficulty and time cost of engineering installation, and urgently need improvement. Summary of the Invention

[0005] In order to improve the sealing and installation convenience of a two-way socket joint pipe while ensuring its firmness during installation, the present application provides a two-way socket joint pipe.

[0006] The present application provides a two-way socket joint pipe adopting the following technical solution:

[0007] The present application provides a two-way socket joint pipe, including a two-way socket joint pipe body, two of the two-way socket joint pipe bodies are symmetrically arranged, and the two two-way socket joint pipe bodies are connected and sealed by a connecting assembly, and the connecting assembly comprises a sealing ring 1, a special-shaped edge sealing ring and an elastic edge sealing sleeve. The sealing ring 1 is clamped between the end faces of the two two-way socket joint pipe bodies, and a sealing gap is formed between the two end faces of the two two-way socket joint pipe bodies located on the outer ring of the sealing ring 1. The special-shaped edge sealing ring has a sealing clamp clamped in the sealing gap and a special-shaped edge sealing body arranged on the outer wall of the two two-way socket joint pipe bodies. The elastic edge sealing sleeve is sleeved on the outer wall of the two two-way socket joint pipe bodies and is clamped with the special-shaped edge sealing body in an interference fit.

[0008] Optionally, the two-way socket joint pipe body includes a stainless steel inner liner pipe, an outer structural pipe and a hot-melt adhesive layer. The outer structural pipe is sleeved outside the stainless steel inner liner pipe. Both ends of the stainless steel inner liner pipe are folded outwards, and one end folded outwards is bent towards each other to form a clamping portion. The outer structural pipe is clamped in the clamping portions at both ends. The hot-melt adhesive layer is filled between the stainless steel inner liner pipe and the outer structural pipe.

[0009] Further, the special-shaped edge sealing body is sleeved on the outer walls of the two clamping portions at one end where two two-way socket joint pipe bodies are connected.

[0010] Further, the elastic edge sealing sleeve includes an outer sleeve body and an elastic sealing ring sleeve. The outer sleeve body is an annular sleeve body with a "匚"-shaped cross-section, and the outer sleeve body is sleeved on the outer sides of the two clamping portions at one end where two two-way socket joint pipe bodies are connected. There is at least one elastic sealing ring sleeve, and the elastic sealing ring sleeve is clamped in the inner ring groove body of the outer sleeve body and is clamped with the special-shaped edge sealing body.

[0011] Furthermore, the special-shaped edge sealing body has a first edge sealing segment, a second edge sealing segment and a third edge sealing segment connected in sequence. Both the first edge sealing segment and the third edge sealing segment have an inclined surface one for clamping and abutting against the elastic sealing ring sleeve, and the second edge sealing segment has two inclined surfaces two for clamping and abutting against the elastic sealing ring sleeve. The two inclined surfaces two are respectively connected to the inclined surface one of the first edge sealing segment and the third edge sealing segment and are arranged at an angle.

[0012] Furthermore, at least one annular protrusion is provided on the inner wall of the inner ring of the outer sleeve body. The annular protrusion is clamped with the elastic sealing ring sleeve, and one side of the annular protrusion connected to the elastic sealing ring sleeve has a plurality of connected rhomboid surfaces.

[0013] Furthermore, a plurality of special-shaped sealing grooves are evenly spaced on the outer wall of the circumferential side of the clamping portion. The special-shaped sealing grooves include a wavy groove provided on the outer side of the clamping portion and a through groove provided on the side where the clamping portion is connected to the outer structural pipe. The wavy groove is communicated with the through groove, and the part of the elastic sealing ring sleeve opposite to the special-shaped sealing groove fits the wavy groove and is extruded into the through groove.

[0014] Further, both ends of the stainless steel inner liner pipe are folded outwards at a 90° angle to form folding portions. The middle part of the outer wall of one of the folding portions is recessed to form a sealing groove and a protruding portion is formed on the side of the folding portion facing the outer structural pipe. An annular clamping groove for clamping with the protruding portion is provided on the end face of the outer structural pipe. When two two-way socket joint pipe bodies are connected, the sealing grooves on the two two-way socket joint pipe bodies are arranged opposite to each other, and the first sealing ring is clamped between the sealing grooves of the two two-way socket joint pipe bodies.

[0015] Furthermore, the cross section of the sealing groove in the vertical direction is arranged in the shape of an isosceles triangle, the cross section of the sealing ring is in the shape of a hexagonal prism, and the outer ring surface of the sealing ring abuts against the inner ring surface of the sealing clamp.

[0016] Furthermore, the cross section of the sealing ring is elliptical with vertical cuts at both ends in the horizontal direction, the sealing groove is in an arc shape that matches the arc-shaped outer wall of the sealing ring, and the outer ring surface of the sealing ring is a vertical ring surface that abuts against the inner ring surface of the sealing clamp.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] The two-way socket joint pipe of the present invention is supported by each other by the two end surfaces of the two-way socket joint pipe body, and a sealing groove is provided between the two end surfaces and a sealing ring is pressed, and then the two two-way socket joint pipe bodies are tightly fixed by a connecting component, thereby improving the sealing effect between the socket joints and reducing the pressure loss during liquid flow, thereby improving the sealing performance and installation convenience of the two-way socket joint pipe while ensuring the firmness during installation.

[0019] The two-way socket joint pipe of the present invention is sealed by a multi-contact surface sealing ring and a sealing groove, and then a special-shaped edge sealing ring is used to perform a secondary sealing on the sealing gap outside the sealing ring between the two two-way socket joint pipe bodies. The special-shaped outer surface of the special-shaped edge sealing body on the special-shaped edge sealing ring cooperates with the elastic sealing ring sleeve to form a third layer of sealing, which greatly improves the sealing performance of the connection between the two two-way socket joint pipe bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an axonometric diagram of a two-way socket joint pipe provided by an embodiment of the present invention;

[0021] Figure 2 1 is a schematic cross-sectional view of a two-way socket joint pipe provided in the first embodiment of the present invention;

[0022] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0023] Figure 4 It is a schematic cross-sectional view showing the overall structure of the connection assembly when the elastic sealing ring is not squeezed into the special-shaped sealing groove;

[0024] Figure 5 This is a schematic structural diagram of a lined stainless steel pipe provided by an embodiment of the present invention;

[0025] Figure 6 This is a schematic cross-sectional structure diagram of a two-way socket joint pipe provided in Example 2 of the present invention.

[0026] Figure markings: 1. Two-way socket joint pipe body; 11. Lined stainless steel pipe; 111. Clamping part; 1111. Special-shaped sealing groove; 111A. Wave-shaped groove; 111B. Through groove; 112. Folding part; 1121. Protruding part; 12. External structure pipe; 121. Annular clamping groove; 13. Hot melt adhesive layer; 2. Connecting assembly; 21. Sealing ring 1; 22. Special-shaped edge sealing ring; 221. Sealing clamping ring; 222. Special-shaped edge sealing body; 2221. First edge sealing section; 2222. Second edge sealing section; 2223. Third edge sealing section; 222A. Inclined surface 1; 222B. Inclined surface 2; 23. Elastic edge sealing sleeve; 231. Outer shell; 2311. Annular protrusion; 232. Elastic sealing ring sleeve; 3. Sealing gap; 4. Sealing groove. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons having ordinary skills in the field to which this application belongs. The words "a" or "an" and the like used in the patent application specification and claims of this application do not indicate a limitation on quantity, but rather indicate the presence of at least one.

[0029] The following is combined with Figure 1-6 This application is described in further detail.

[0030] The embodiment of the present application discloses a bidirectional socket joint pipe. Example

[0031] Reference Figure 1 A two-way socket joint pipe includes a two-way socket joint pipe body 1. Two two-way socket joint pipe bodies 1 are symmetrically installed, and the two two-way socket joint pipe bodies 1 are connected and sealed by a connecting component 2.

[0032] Reference Figure 2, the connecting component 2 has a first sealing ring 21, a special-shaped edge sealing ring 22 and an elastic edge sealing sleeve 23. The first sealing ring 21 is clamped between the end faces of the two double-ended socket and spigot joint pipe bodies 1 to form the first seal; a sealing gap 3 is formed between the end faces of the two double-ended socket and spigot joint pipe bodies 1 on the outer circle of the first sealing ring 21. The special-shaped edge sealing ring 22 has a sealing clamping ring 221 clamped in the sealing gap 3 and a special-shaped edge sealing body 222 surrounding the outer walls of the two double-ended socket and spigot joint pipe bodies 1, thereby forming the second seal for the two double-ended socket and spigot joint pipe bodies 1. The sealing clamping ring 221 and the special-shaped edge sealing body are integrally formed; the elastic edge sealing sleeve 23 is sleeved on the outer walls of the two double-ended socket and spigot joint pipe bodies 1 and is clamped with the special-shaped edge sealing body 222 in an interference fit to form the third seal for the two double-ended socket and spigot joint pipe bodies 1.

[0033] Refer to Figure 1 and Figure 2 , the double-ended socket and spigot joint pipe body 1 includes a stainless steel inner liner 11, an outer structure pipe 12 and a hot-melt adhesive layer 13. The outer structure pipe 12 is sleeved outside the stainless steel inner liner 11. Both ends of the stainless steel inner liner 11 are folded outwards, and one end folded outwards is bent towards each other to form a clamping portion 111. The outer structure pipe 12 is clamped in the clamping portions 111 at both ends. The hot-melt adhesive layer 13 is filled between the stainless steel inner liner 11 and the outer structure pipe 12. Then, after the pressing and folding of the stainless steel inner liner 11 and the outer structure pipe 12 are completed, the hot-melt adhesive layer 13 can be heated to realize the bonding and fixing of the stainless steel inner liner 11 and the outer structure pipe 12. In this embodiment, the pressing and folding process of the stainless steel inner liner 11 is an existing technology and will not be elaborated too much.

[0034] Refer to Figure 1-Figure 5 , the elastic edge sealing sleeve 23 includes an outer sleeve body 231 and an elastic sealing ring sleeve 232. The outer sleeve body 231 is an annular sleeve body with a "匚"-shaped cross-section. The outer sleeve body 231 is sleeved outside the two clamping portions 111 at the connected ends of the two double-ended socket and spigot joint pipe bodies 1. At least one elastic sealing ring sleeve 232 is provided. The elastic sealing ring sleeve 232 is clamped in the inner groove of the outer sleeve body 231 and is clamped with the special-shaped edge sealing body 222. In this embodiment, preferably, one elastic sealing ring sleeve 232 is installed and completely fills the inner groove of the outer sleeve body 231.

[0035] Furthermore, the special-shaped edge sealing body 222 is sleeved on the outer wall of the two clamping parts 111 at one end of the two two-way socket joint pipe bodies 1, and the special-shaped edge sealing body 222 has a first edge sealing section 2221, a second edge sealing section 2222 and a third edge sealing section 2223 that are sequentially connected and integrally formed. The first edge sealing section 2221 and the third edge sealing section 2223 are respectively arranged around the outer side of the clamping part 111 of the two two-way socket joint pipe bodies 1. The first edge sealing section 2221 and the third edge sealing section 2223 are respectively arranged around the outer side of the clamping part 111 of the two two-way socket joint pipe bodies 1. 223 have an inclined surface 222A that is clamped and abutted with the elastic sealing ring 232, and the second sealing section 2222 has two inclined surfaces 222B that are clamped and abutted with the elastic sealing ring 232. The two inclined surfaces 222B are respectively connected to the inclined surface 222A of the first sealing section 2221 and the third sealing section 2223 and are set at an angle. The flow path of the leaked liquid is increased by setting multiple inclined surfaces, thereby forming a multi-path seal to enhance the sealing performance.

[0036] Furthermore, at least one annular protrusion 2311 is integrally formed on the inner wall of the inner ring of the outer sleeve 231, and the annular protrusion 2311 is clamped with the elastic sealing ring 232. The side where the annular protrusion 2311 is connected to the elastic sealing ring 232 has multiple connected prismatic surfaces to improve the stability of the elastic sealing ring 232 when forming a seal in the outer sleeve 231. In this embodiment, two annular protrusions 2311 are preferably arranged at axial intervals along the outer sleeve 231.

[0037] A plurality of special-shaped sealing grooves 1111 are evenly spaced on the outer wall of the clamping portion 111. The special-shaped sealing grooves 1111 include a wavy groove 111A provided on the outside of the clamping portion 111 and a through groove 111B provided on the side where the clamping portion 111 connects to the outer structure tube 12. The wavy groove 111A is connected to the through groove 111B. The portion of the elastic sealing ring 232 opposite to the special-shaped sealing groove 1111 fits into the wavy groove 111A and is squeezed into the through groove 111B. Since the special-shaped sealing grooves 1111 are provided on the clamping portions 111 of the two connected two-way socket joint pipe bodies 1, a circle of seal can be formed again at both ends of the junction of the clamping portion 111 and the elastic sealing ring 232, thereby further improving the sealing performance.

[0038] Reference Figure 2 and Figure 4 The two ends of the inner lining stainless steel tube 11 are folded outward at a 90° angle to form a folding portion 112, wherein the middle part of the outer wall of the folding portion 112 at one end is concave to form a sealing groove 4 and a protrusion 1121 is formed on the side of the folding portion 112 facing the outer structural tube 12, and an annular groove 121 is provided on the end surface of the outer structural tube 12 to be clamped with the protrusion 1121. When the two two-way socket joint pipe bodies 1 are connected, the sealing grooves 4 on the two two-way socket joint pipe bodies 1 are arranged opposite to each other, and the sealing ring 21 is clamped between the sealing grooves 4 of the two two-way socket joint pipe bodies 1 to ensure the stability of the sealing ring 21 during sealing.

[0039] Furthermore, the cross-section of the sealing groove 4 in the vertical direction is an isosceles triangle, and the cross-section of the sealing ring 21 is a hexagonal prism, which greatly increases the difficulty of leakage from the sealing groove 4. The outer ring surface of the sealing ring 21 abuts against the inner ring surface of the sealing clamp 221 to seal the sealing gap 3. Example

[0040] Reference Figure 6 The difference between this embodiment and the first embodiment is that the cross-section of the sealing ring 21 is an ellipse with vertical cuts at both ends in the horizontal direction, the sealing groove 4 is an arc-shaped that matches the arc-shaped outer wall of the sealing ring 21, and the outer ring surface of the sealing ring 21 is a vertical ring surface that abuts against the inner ring surface of the sealing clamp 221 to seal the sealing gap 3.

[0041] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A two-way socket joint pipe, characterized by: It includes a double-end socket joint pipe body (1). There are two symmetrically arranged double-end socket joint pipe bodies (1), and the two double-end socket joint pipe bodies (1) are connected and sealed by a connecting component (2). The connecting component (2) has a first sealing ring (21), a special-shaped edge-sealing ring (22) and an elastic edge-sealing sleeve (23). The first sealing ring (21) is clamped between the end faces of the two double-end socket joint pipe bodies (1). A sealing gap (3) is formed between the end faces of the two double-end socket joint pipe bodies (1) on the outer ring of the first sealing ring (21). The special-shaped edge-sealing ring (22) has a sealing clamping ring (221) clamped in the sealing gap (3) and a special-shaped edge-sealing body (222) surrounding the outer walls of the two double-end socket joint pipe bodies (1). The elastic edge-sealing sleeve (23) is sleeved on the outer walls of the two double-end socket joint pipe bodies (1) and is clamped with the special-shaped edge-sealing body (222) by interference fit; The double-end socket joint pipe body (1) includes a stainless steel inner liner pipe (11), an outer structural pipe (12) and a hot-melt adhesive layer (13). The outer structural pipe (12) is sleeved outside the stainless steel inner liner pipe (11). Both ends of the stainless steel inner liner pipe (11) are folded outwards, and the ends folded outwards are bent towards each other to form clamping parts (111). The outer structural pipe (12) is clamped in the clamping parts (111) at both ends. The hot-melt adhesive layer (13) is filled between the stainless steel inner liner pipe (11) and the outer structural pipe (12); The elastic edge-sealing sleeve (23) includes an outer sleeve body (231) and an elastic sealing ring sleeve (232). The outer sleeve body (231) is an annular sleeve body with a "U" - shaped cross-section. The outer sleeve body (231) is sleeved outside the two clamping parts (111) at the connected end of the two double-end socket joint pipe bodies (1). There is at least one elastic sealing ring sleeve (232). The elastic sealing ring sleeve (232) is clamped in the inner ring groove body of the outer sleeve body (231) and is clamped with the special-shaped edge-sealing body (222); The special-shaped edge-sealing body (222) has a first edge-sealing section (2221), a second edge-sealing section (2222) and a third edge-sealing section (2223) connected in sequence. Both the first edge-sealing section (2221) and the third edge-sealing section (2223) have a first inclined surface (222A) for clamping and abutting against the elastic sealing ring sleeve (232). The second edge-sealing section (2222) has two second inclined surfaces (222B) for clamping and abutting against the elastic sealing ring sleeve (232). The two second inclined surfaces (222B) are respectively connected to the first inclined surfaces (222A) of the first edge-sealing section (2221) and the third edge-sealing section (2223) and are arranged at an angle; A plurality of special-shaped sealing grooves (1111) are evenly spaced on the outer wall of the clamping portion (111), the special-shaped sealing grooves (1111) comprising a wavy groove (111A) provided on the outer side of the clamping portion (111) and a through groove (111B) provided on the side where the clamping portion (111) and the outer structural tube (12) meet, the wavy groove (111A) being in communication with the through groove (111B), and the portion of the elastic sealing ring (232) opposite to the special-shaped sealing groove (1111) being fitted with the wavy groove (111A) and being squeezed into the through groove (111B); The special-shaped edge sealing body (222) is sleeved on the outer walls of the two clamping parts (111) at one end of the two bidirectional socket joint pipe bodies (1); At least one annular protrusion (2311) is provided on the inner wall of the inner ring of the outer shell (231), and the annular protrusion (2311) is clamped with the elastic sealing ring (232), and the side where the annular protrusion (2311) and the elastic sealing ring (232) are connected has a plurality of connected prismatic surfaces; The two ends of the inner lining stainless steel tube (11) are folded outward at a 90° angle to form a folding portion (112), wherein the middle portion of the outer wall of the folding portion (112) at one end is concave to form a sealing groove (4) and a convex portion (1121) is formed on the side of the folding portion (112) facing the outer structure tube (12), and an annular clamping groove (121) is provided on the end surface of the outer structure tube (12) to be clamped with the convex portion (1121). When the two two-way socket joint tube bodies (1) are connected, the sealing grooves (4) on the two two-way socket joint tube bodies (1) are arranged opposite to each other, and the sealing ring (21) is clamped between the sealing grooves (4) of the two two-way socket joint tube bodies (1).

2. The two-way socket joint pipe according to claim 1, characterized in that: The cross section of the sealing groove (4) in the vertical direction is arranged in the shape of an isosceles triangle, the cross section of the sealing ring 1 (21) is in the shape of a hexagonal prism, and the outer ring surface of the sealing ring 1 (21) abuts against the inner ring surface of the sealing clamp (221) to seal the sealing gap (3).

3. The two-way socket joint pipe according to claim 1, characterized in that: The cross section of the sealing ring 1 (21) is elliptical with vertical cuts at both ends in the horizontal direction. The sealing groove (4) is in an arc shape that matches the arc-shaped outer wall of the sealing ring 1 (21). The outer ring surface of the sealing ring 1 (21) is a vertical ring surface that abuts against the inner ring surface of the sealing clamp (221) to seal the sealing gap (3).

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