Connecting pipe assembly and pipeline assembly

Abstract

The utility model provides a connecting pipe assembly and a pipeline assembly, and relates to the technical field of pipelines. The connecting pipe assembly comprises a sealing connecting pipe and a supporting pipe. The sealing connecting pipe is made of a flexible material; the two ends of the sealing connecting pipe are used for being coaxially connected to the two pipelines in a sleeving mode correspondingly so that the two pipelines can communicate through the sealing connecting pipe. The supporting pipe is made of rigid materials and is shorter than the sealing connecting pipe. The end of the sealing connecting pipe is coaxially arranged in the supporting pipe, so that the circumferential outer surface of the joint portion of the pipeline and the sealing connecting pipe and the circumferential inner surface of the supporting pipe can jointly apply extrusion force to the pipe wall of the sealing connecting pipe in the radial direction of the sealing connecting pipe, and the pipe wall of the sealing connecting pipe is elastically compressed. According to the connecting pipe assembly, the deformation resistance of the connecting pipe assembly can be improved, the capacity of the connecting pipe assembly for absorbing the position tolerance between the pipelines can be enhanced, particularly, the capacity of the connecting pipe assembly for absorbing the eccentricity tolerance between the pipelines can be enhanced, and therefore the sealing performance between the connecting pipe assembly and the pipelines is high.

Description

Technical Field

[0001] The present application relates to the technical field of pipelines, and in particular to a connecting pipe component and a pipeline assembly. Background Art

[0002] In the related art, there are generally two types of connecting pipes: flexible and rigid. The flexible connecting pipe can absorb the position tolerance of the pipe connected to it through a large deformation, but due to its weak ability to resist deformation, when its end is coaxially sleeved on the pipe, it is difficult for its end to generate a high pre-tightening force with the pipe, which affects the sealing of the sleeve; the rigid connecting pipe has a strong ability to resist deformation. When its end is coaxially sleeved on the pipe, it is easy for its end to generate a high pre-tightening force with the pipe, but the rigid connecting pipe has a weak deformation ability and it is difficult to absorb the position tolerance of the pipe connected to it, and it is especially difficult to absorb the eccentricity tolerance of the pipe connected to it, so that the connection between the connecting pipe and the pipe is not tight enough, which in turn affects its sealing, and in severe cases, it may even break free from the connection.

[0003] Therefore, the connection pipe in the related art is prone to poor sealing between the pipes due to the weak deformation resistance of the connection pipe or the difficulty of the connection pipe in absorbing the position tolerance between the pipes, especially the eccentricity tolerance between the pipes. Utility Model Content

[0004] The present application provides a connecting pipe assembly and a pipeline assembly, which can improve the deformation resistance of the connecting pipe assembly, and can also enhance the ability of the connecting pipe assembly to absorb the position tolerance between the pipelines, and in particular can enhance the ability to absorb the eccentricity tolerance between the pipelines, thereby making the sealing between the connecting pipe assembly and the pipeline higher.

[0005] In the first aspect, the present application provides a connecting pipe assembly, which includes a sealing connecting pipe and a supporting pipe. The sealing connecting pipe is made of a flexible material; the two ends of the sealing connecting pipe are respectively used to coaxially sleeve on two pipes, so that the two pipes are connected through the sealing connecting pipe; the supporting pipe is made of a rigid material and is shorter than the sealing connecting pipe; the end of the sealing connecting pipe is coaxially arranged in the supporting pipe, so that along the radial direction of the sealing connecting pipe, the circumferential outer surface of the joint part of the pipe and the sealing connecting pipe and the circumferential inner surface of the supporting pipe can jointly apply an extrusion force to the pipe wall of the sealing connecting pipe, so that the pipe wall of the sealing connecting pipe is elastically compressed.

[0006] In some implementations of the present application, the connecting pipe assembly further includes an adhesive layer, and the circumferential inner surface of the support pipe and the circumferential outer surface of the sealing connecting pipe are bonded via the adhesive layer so that the support pipe is coaxially connected to the outer periphery of the sealing connecting pipe.

[0007] In some implementations of the present application, a flange is formed on the surface of the sealing connecting tube away from the central axis, and the protruding direction of the flange is the radial direction of the sealing connecting tube and points to the outside of the sealing connecting tube; the end face of the flange along the axial end of the sealing connecting tube is arranged opposite to and abuts against the end face of one end of the pipe section of the support tube.

[0008] In some implementations of the present application, there are multiple flanges, which are arranged at intervals along the axial direction of the sealing connecting tube. Along the axial direction of the sealing connecting tube, the end faces of two flanges close to each other are respectively arranged opposite to and abut against the end faces at both ends of the support tube.

[0009] In some implementations of the present application, a first mounting groove is formed on one of the end faces of the flange that abuts the support tube along the axial direction of the sealing connecting tube, and a first mounting protrusion is formed on the other of the end faces of the pipe section of the support tube that abuts the flange. The depth direction of the first mounting groove and the protruding direction of the first mounting protrusion are both axially of the sealing connecting tube, and the first mounting groove cooperates with the first mounting protrusion.

[0010] In some implementations of the present application, there are multiple first installation grooves, and the multiple first installation grooves are arranged at intervals along the circumference of the sealing connecting tube. The number of first installation protrusions is the same as that of the first installation grooves, and they are arranged one-to-one with the first installation grooves.

[0011] In some implementations of the present application, a second mounting protrusion is formed on one of the surfaces of the joint portion of the sealing connecting tube and the support tube away from the central axis, and a second mounting groove is formed on the other of the surfaces of the support tube close to the central axis, and a depth direction of the second mounting groove and a protruding direction of the second mounting protrusion are both radial directions of the sealing connecting tube, and the second mounting protrusion cooperates with the second mounting groove to make the support tube coaxially connected to the sealing connecting tube.

[0012] In some implementations of the present application, there are multiple second mounting grooves, and the multiple second mounting grooves are arranged at intervals along the circumference of the sealing connecting tube. The number of second mounting protrusions is the same as the second mounting grooves, and they are arranged in a one-to-one correspondence with the second mounting grooves.

[0013] In some implementations of the present application, there are multiple second mounting grooves, at least two second mounting grooves are respectively located at both ends of the support tube, and the number of second mounting protrusions is the same as the second mounting grooves, and are arranged in a one-to-one correspondence with the second mounting grooves.

[0014] In some implementations of the present application, a first installation cavity is provided on the peripheral side of the end of the sealing connecting tube, one end of the support tube is enclosed in the first installation cavity, and the other end of the support tube extends radially along the sealing connecting tube and points outside the sealing connecting tube for connecting external components.

[0015] In some implementations of the present application, a sealing rib is formed on the surface of the portion where the sealing connecting tube and the supporting tube are joined close to the central axis, and the protruding direction of the sealing rib is radial to the sealing connecting tube and points to the central axis of the sealing connecting tube, so that along the radial direction of the sealing connecting tube, the circumferential outer surface of the portion where the pipeline and the sealing connecting tube are joined and the circumferential inner surface of the supporting tube can jointly extrude the sealing rib, so that the sealing rib is elastically compressed.

[0016] In some implementations of the present application, there are multiple sealing ribs, the multiple sealing ribs are arranged at intervals along the axial direction of the sealing connecting tube, and the portion of the sealing connecting tube corresponding to each supporting tube is provided with at least one sealing rib.

[0017] In some implementations of the present application, the sealing rib extends along the circumference of the sealing connection pipe to form a peripheral structure, and the sealing rib is used to abut against the outer circumference of the pipe.

[0018] In some implementations of the present application, on the axial cross section of the sealing connecting pipe, the shape of the sealing rib is set to be one of a triangle, a trapezoid, and an arc.

[0019] In some implementations of the present application, two support tubes are provided, and both ends of the sealing connection tube are coaxially connected to the corresponding support tubes, so that the two support tubes and the two pipelines respectively apply extrusion force to the tube wall of the sealing connection tube.

[0020] In some implementations of the present application, the connecting pipe assembly further includes a first support body, the first support body is made of a rigid material; the first support body is coaxially connected to the middle portion of the sealing connecting pipe to support the middle portion of the sealing connecting pipe. In addition, along the axial direction of the sealing connecting pipe, the first support body and the support pipe are spaced apart on the sealing connecting pipe.

[0021] In some implementations of the present application, a second installation cavity is provided on the peripheral side of the middle portion of the sealed connecting tube, and the first support body is enclosed in the second installation cavity.

[0022] In some implementations of the present application, a first limiting protrusion is also formed on the surface of the first support body close to the central axis, and the protruding direction of the first limiting protrusion is the radial direction of the sealing connecting pipe and points to the central axis of the sealing connecting pipe; the first limiting protrusion is used to axially limit one end of the two pipes extending into the sealing connecting pipe.

[0023] In some implementations of the present application, the connecting tube assembly further includes two second supports, which are made of a rigid material; the second supports are coaxially arranged on the outer periphery of the middle portion of the sealing connecting tube, and one end of the two second supports abut against each other, and the other ends of the two second supports abut against the two ends of the two supporting tubes that are close to each other. Along the radial direction of the sealing connecting tube, the circumferential inner surface of the second supports is spaced from the circumferential outer surface of the sealing connecting tube, so that the portion of the sealing connecting tube corresponding to the second supports can produce elastic deformation along its radial direction, and when the circumferential outer surface of the sealing connecting tube contacts the circumferential inner surface of the second supports, the portion of the sealing connecting tube corresponding to the second supports is supported.

[0024] In some implementations of the present application, a support protrusion is formed on the surface of the sealing connecting tube corresponding to the portion of the second support body that is away from the central axis, and the protruding direction of the support protrusion is radial to the sealing connecting tube and points to the outside of the sealing connecting tube; the support protrusion can abut against the circumferential inner surface of the second support body along the protruding direction.

[0025] In some implementations of the present application, the connecting tube assembly also includes at least two clamping arms, which are elastic, and at least one clamping arm is arranged between each second support body and the corresponding support tube, and one end of the clamping arm along the axial direction of the sealing connecting tube is connected to the second support body, and the other end abuts against the end surface of the support tube close to the second support body.

[0026] In some implementations of the present application, one of the circumferential outer surface of the support tube and the circumferential inner surface of the second support body is provided with a guide groove, and the other of the circumferential outer surface of the support tube and the circumferential inner surface of the second support body is provided with a protrusion adapted to the guide groove. The guide groove is arranged in a curved manner, and both ends of the guide groove extend to both ends of the support tube or the second support body in the axial direction of the sealing connection tube respectively; the protrusion can slide along the guide groove so that the second support body slides coaxially into the middle part of the sealing connection tube through the guide groove.

[0027] In some implementations of the present application, a reinforcing protrusion is formed on the surface of the sealing connecting tube away from the central axis, the protruding direction of the reinforcing protrusion is the radial direction of the sealing connecting tube and points to the outside of the sealing connecting tube; the reinforcing protrusion is located in the middle of the sealing connecting tube.

[0028] In some implementations of the present application, one end of one of the two pipes is coaxially embedded in one end of the sealing connection pipe, and the other end is bent and extends toward the other pipe of the two pipes, so that the cross section of one of the pipes in the axial direction of the sealing connection pipe is "U" shaped. In addition, the reinforcing protrusion is located between the other end of one of the pipes and the sealing connection pipe.

[0029] In some implementations of the present application, a second limiting protrusion is formed on the surface of the sealing connecting tube close to the central axis, the protruding direction of the second limiting protrusion is the radial direction of the sealing connecting tube and points to the central axis of the sealing connecting tube; the second limiting protrusion is located in the middle of the sealing connecting tube; the second limiting protrusion is used to axially limit one end of the two pipes extending into the sealing connecting tube.

[0030] In some implementations of the present application, the hardness of the material used to make the sealed connecting pipe is 40-90HA.

[0031] In some implementations of the present application, the material of the sealing connecting pipe includes at least one of the following: EPDM rubber, nitrile rubber, fluororubber, ethylene acrylate rubber, vinyl acetate rubber, silicone rubber, hydrogenated nitrile rubber, polyamide, and thermoplastic elastomer.

[0032] In a second aspect, the present application provides a pipeline assembly, which includes a pipeline and a connecting pipe assembly provided in the first aspect of the present application. The pipeline is made of a rigid material and is two in number; the two ends of the sealing connecting pipe are respectively coaxially sleeved on the two pipelines so that the two pipelines are connected through the sealing connecting pipe; the sealing connecting pipe includes a deformable pipe section, and along the axial direction of the sealing connecting pipe, the deformable pipe section is located between the parts where the two pipelines are connected to the sealing connecting pipe, and is not connected to the support pipe.

[0033] In the connecting pipe assembly of the pipeline assembly provided by the present application, a support pipe made of a rigid material is coaxially connected to the outer periphery of the end of the sealing connecting pipe made of a flexible material, and the length of the support pipe is shorter than the sealing connecting pipe. The sealing connecting pipe is axially located between the parts where the two pipelines are joined to the sealing connecting pipe, and the part not joined to the support pipe has a strong deformation ability, which can better absorb the position tolerance of the two pipelines, and especially the eccentricity tolerance of the two pipelines, so as to improve the sealing performance. The support pipe and the pipeline can jointly apply an extrusion force to the pipe wall of the sealing connecting pipe, that is, the support pipe can radially apply a force toward the pipeline to the side wall of the sealing connecting pipe, so that the sealing connecting pipe fits the pipeline more closely, and the pre-tightening force is greater, which is conducive to improving the sealing performance. Therefore, the connecting pipe assembly provided by the present application can make the connection between the connecting pipe assembly and the pipeline have a higher sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0035] Figure 1 This is one of the structural schematic diagrams of the connecting pipe assembly in some embodiments of the present application;

[0036] Figure 2 An exploded view of a connecting pipe assembly in some embodiments of the present application;

[0037] Figure 3 This is one of the cross-sectional views of the connecting pipe assembly in some embodiments of the present application;

[0038] Figure 4 One of the cross-sectional views of the pipeline assembly in some embodiments of the present application;

[0039] Figure 5 This is a second cross-sectional view of the connecting pipe assembly in some embodiments of the present application;

[0040] Figure 6 This is the second structural schematic diagram of the connecting pipe assembly in some embodiments of the present application;

[0041] Figure 7 This is a third cross-sectional view of a connecting pipe assembly in some embodiments of the present application;

[0042] Figure 8 This is a fourth cross-sectional view of a connecting pipe assembly in some embodiments of the present application;

[0043] Fig. 9 This is a fifth cross-sectional view of the connecting pipe assembly in some embodiments of the present application;

[0044] Fig.10 One of the cross-sectional views of the support tube in some embodiments of the present application;

[0045] Fig.11 This is a second cross-sectional view of a support tube in some embodiments of the present application;

[0046] Fig.12 The third cross-sectional view of the support tube in some embodiments of the present application;

[0047] Fig.13 This is a fourth cross-sectional view of a support tube in some embodiments of the present application;

[0048] Fig.14 The fifth cross-sectional view of the support tube in some embodiments of the present application;

[0049] Fig.15 This is a schematic diagram of the structure of the support tube in some embodiments of the present application;

[0050] Fig.16 for Fig.15 Cross-section at AA in the middle;

[0051] Fig.17 This is the third structural schematic diagram of the connecting pipe assembly in some embodiments of the present application;

[0052] Fig.18 This is a fourth structural schematic diagram of a connecting pipe assembly in some embodiments of the present application;

[0053] Fig.19 This is a sixth cross-sectional view of the connecting pipe assembly in some embodiments of the present application;

[0054] Fig. 20 This is a second cross-sectional view of a pipeline assembly in some embodiments of the present application;

[0055] Fig.21 This is a schematic diagram of the structure of the support body in some embodiments of the present application;

[0056] Fig. 22 This is a fifth structural schematic diagram of a connecting pipe assembly in some embodiments of the present application;

[0057] Fig.23 This is a schematic structural diagram of a connecting pipe assembly without showing a supporting pipe in some embodiments of the present application;

[0058] Fig.24 This is a seventh cross-sectional view of a connecting pipe assembly in some embodiments of the present application;

[0059] Fig.25 The third cross-sectional view of the pipeline assembly in some embodiments of the present application;

[0060] Fig.26 This is a schematic diagram of the structure of the pipeline assembly in some embodiments of the present application;

[0061] Fig. 27 This is a fourth cross-sectional view of a pipeline assembly in some embodiments of the present application;

[0062] Fig.28 This is a fifth cross-sectional view of a pipeline assembly in some embodiments of the present application;

[0063] Fig.29 This is an eighth cross-sectional view of a connecting pipe assembly in some embodiments of the present application;

[0064] Fig.30 A ninth cross-sectional view of a connecting pipe assembly in some embodiments of the present application;

[0065] Fig.31 This is a sixth cross-sectional view of a pipeline assembly in some embodiments of the present application;

[0066] Fig.32 This is the tenth cross-sectional view of the connecting pipe assembly in some embodiments of the present application.

[0067] Description of reference numerals:

[0068] 01-pipe; 011-embedded section; 012-connecting section; 013-extension section; 1-sealed connecting pipe; 11-flange; 111-first mounting groove; 12-second mounting protrusion; 13-sealing rib; 14-support protrusion; 15-first connecting part; 16-guide slope; 17-dustproof part; 18-reinforcement protrusion; 19-second limiting protrusion; 1x-first mounting cavity; 1y-second mounting cavity; 2-support pipe; 21-first mounting protrusion; 22-second mounting groove; 23-second connecting part; 24-third connecting part; 3-first supporting body; 31-first limiting protrusion; 32-reinforcement protrusion; 4-second supporting body; 5-clamp arm; 6-guide groove; 7-protrusion; a-axial direction of the sealed connecting pipe. DETAILED DESCRIPTION

[0069] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0071] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0072] In the description of the embodiments of the present application, the technical steps may be interchanged in a specific order or sequence without conflict, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0073] In the description of the embodiments of the present application, the technical terms "first", "second", "third", etc. are only used to distinguish objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In some embodiments of the present application, "first", "second", "third", etc. may also refer to the same object. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0074] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0075] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0076] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "abutment" should be understood in a broad sense, and can be direct contact or contact through an intermediate medium layer. It can be contact with essentially no interaction force between the two contacting parties, or it can be contact with interaction force between the two contacting parties.

[0077] Below, this application is described in detail.

[0078] The present application provides a pipeline assembly, which can be used to transport fluids, such as natural gas, oil, water, coolant, etc.

[0079] Please refer to Figure 1 to Figure 4 , Figure 1 to Figure 4 Belong to the same embodiment. The pipeline assembly provided in the embodiment of the present application includes a pipeline 01 and a connecting pipe assembly. Among them, the pipeline 01 is made of rigid material and there are two of them; the two ends of the connecting pipe assembly are respectively connected to the two pipelines 01, so that the two pipelines 01 are connected through the connecting pipe assembly. In some embodiments of the present application, the connecting pipe assembly can be a pipeline connector.

[0080] Please refer to Figure 1 to Figure 4The connecting tube assembly provided in the embodiment of the present application includes a sealing connecting tube 1 and a supporting tube 2. The sealing connecting tube 1 is made of a flexible material; the two ends of the sealing connecting tube 1 are coaxially sleeved on the two pipes 01 respectively, so that the two pipes 01 are connected through the sealing connecting tube 1; the supporting tube 2 is made of a rigid material, and its length is shorter than the sealing connecting tube 1; the end of the sealing connecting tube 1 is coaxially arranged in the supporting tube 2, so that along the radial direction of the sealing connecting tube 1, the circumferential outer surface of the joint part of the pipe 01 and the sealing connecting tube 1 and the circumferential inner surface of the supporting tube 2 can jointly apply an extrusion force to the tube wall of the sealing connecting tube 1, so that the tube wall of the sealing connecting tube 1 is elastically compressed. The sealing connecting tube 1 includes a deformation tube section, and along the axial direction a of the sealing connecting tube 1, the deformation tube section is located between the joint parts of the two pipes 01 and the sealing connecting tube 1, and is not joined to the supporting tube 2.

[0081] In such a structural form, the support tube 2 made of a rigid material is coaxially connected to the outer periphery of the end of the sealing connection tube 1 made of a flexible material, and the length of the support tube 2 is smaller than the sealing connection tube 1. Along the axial direction a of the sealing connection tube 1, the deformation tube section is located between the parts where the two pipes 01 are joined to the sealing connection tube 1, and is not joined to the support tube 2. The deformation tube section has a strong deformation ability and can better absorb the position tolerance of the two pipes 01, and especially the eccentricity tolerance of the two pipes 01, which is conducive to improving the sealing. The support tube 2 and the pipe 01 can jointly apply an extrusion force to the pipe wall of the sealing connection tube 1, that is, the support tube 2 can radially apply a force toward the pipe 01 to the side wall of the sealing connection tube 1, so that the sealing connection tube 1 and the pipe 01 fit more closely, and the pre-tightening force is greater, which is conducive to improving the sealing. Therefore, the connecting pipe assembly provided in the present application can make the connection between the connecting pipe assembly and the pipe 01 have a higher sealing performance.

[0082] It should be explained that in the embodiment of the present application, the rigid material and the flexible material are used in comparison, that is, the anti-deformation ability of the material of the sealing connection pipe 1 is smaller than that of the material of the pipeline 01 and the material of the support pipe 2 .

[0083] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the hardness of the material used to make the sealing connection pipe 1 is 40-90HA. In this way, the deformation capacity of the sealing connection pipe 1 is relatively strong, and it can better absorb the position tolerance of the two pipes 01, and especially the eccentricity tolerance. Moreover, the elastic coefficient of the material used to make the sealing connection pipe 1 is relatively large, so that the part where the sealing connection pipe 1 and the pipe 01 are joined can generate a strong pre-tightening force on the pipe 01, which is conducive to improving the sealing effect.

[0084] In some embodiments of the present application, the sealing connecting tube 1 is made of an elastic and flexible material. For example, the material making the sealing connecting tube 1 includes at least one of the following: EPDM rubber, nitrile rubber, fluororubber, ethylene acrylate rubber, vinyl acetate rubber, silicone rubber, hydrogenated nitrile rubber, polyamide, and thermoplastic elastomer.

[0085] The above-mentioned materials enable the sealing connecting pipe 1 to absorb the position tolerance of the two pipes 01 , especially the eccentricity tolerance, and also enable a strong pre-tightening force to be generated between the sealing connecting pipe 1 and the pipe 01 .

[0086] In some embodiments of the present application, the pipeline 01 and the support pipe 2 may be made of plastic or metal materials.

[0087] It should be explained that in the embodiments of the present application, the length of the tube structure refers to the axial length of the tube structure. In some embodiments of the present application, the length of the support tube 2 is at least 5 mm. This is conducive to the support tube 2 and the sealing connection tube 1 to cooperate to produce a better sealing effect.

[0088] It should be explained that the surface of the tube structure away from the central axis is the radial outer surface of the tube structure, and the surface of the tube structure close to the central axis is the radial inner surface of the tube structure.

[0089] It can be understood that in the embodiment of the present application, the support tube 2 is fixedly connected to the outer circumference of the sealing connection tube 1, and the sealing connection tube 1 is coaxially assembled on the outer circumference of the pipeline 01, so that the support tube 2 and the pipeline 01 can jointly apply an extrusion force to the tube wall of the sealing connection tube 1. It can be understood that the directions of the forces applied by the support tube 2 and the pipeline 01 to the tube wall of the sealing connection tube 1 are opposite, the circumferential inner surface of the support tube 2 and the circumferential outer surface of the sealing connection tube 1 are connected to each other and tightly fitted, and the circumferential outer surface of the pipeline 01 and the circumferential inner surface of the sealing connection tube 1 are tightly fitted, so that the tube wall of the sealing connection tube 1 is clamped between the circumferential inner surface of the support tube 2 and the circumferential outer surface of the pipeline 01, so that the circumferential inner surface of the support tube 2 and the circumferential outer surface of the pipeline 01 can radially squeeze the tube wall of the sealing connection tube 1, that is, squeeze the tube wall of the sealing connection tube 1 along the thickness direction of the tube wall of the sealing connection tube 1, so as to improve the sealing effect.

[0090] It should be explained that, in the embodiments of the present application, the deformable pipe section has a strong deformation capacity, which can be a strong deformation capacity in the axial direction, that is, it can be deformed to a large extent, or a strong deformation capacity in the radial direction, that is, it can be deformed to a large extent. In some embodiments of the present application, the bending deformation of the deformable pipe section can absorb the eccentricity tolerance of the two pipes 01 within ten millimeters.

[0091] It can be understood that in the embodiment of the present application, the deformable tube section is located between the two support tubes 2 along the axial direction a of the sealing connecting tube 1, and is located between the parts where the two pipes 01 are joined to the sealing connecting tube 1 along the axial direction a of the sealing connecting tube 1, so that the deformation of the deformable tube section is not easily affected by the support tubes 2 and the pipes 01.

[0092] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the sealing connection pipe 1 is a straight pipe, that is, the axis of the sealing connection pipe 1 is a straight line. In other embodiments of the present application, the sealing connection pipe 1 may also be a curved pipe, that is, the axis of the sealing connection pipe 1 has a curved portion.

[0093] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the circumferential inner surface of the end pipe section of the sealing connection pipe 1 further includes a guiding bevel 16, and the guiding bevel 16 has an angle with the central axis of the sealing connection pipe 1. Along the axial direction a of the sealing connection pipe 1, the first end of the guiding bevel 16 is combined with the end surface of one end of the sealing connection pipe 1, and the second end is closer to the central axis of the sealing connection pipe 1 relative to the first end. In this way, the guiding bevel 16 can guide the pipe 01 during the process of the pipe 01 extending into the sealing connection pipe 1, so that when the pipe 01 and the sealing connection pipe 1 are in an eccentric state, the guiding bevel 16 can also guide the pipe 01 to move to a position coaxial with the sealing connection pipe 1, so that the pipe 01 can smoothly extend into the sealing connection pipe 1, which is conducive to improving the convenience of installation.

[0094] Of course, in some embodiments of the present application, the circumferential inner surface of the end pipe section of the sealing connection pipe 1 may not include the guide slope 16. In this case, the circumferential inner surface of the end pipe section of the sealing connection pipe 1 is parallel to the central axis of the sealing connection pipe 1, so that the circumferential inner surface of the end pipe section of the sealing connection pipe 1 can be completely attached to the circumferential outer surface of the pipeline 01. In this way, it is helpful to improve the sealing effect of the sealing connection pipe 1 and the pipeline 01.

[0095] Of course, in some embodiments of the present application, please refer to Figure 5 The end pipe section of the sealing connection pipe 1 can also be provided with a dustproof part 17, the circumferential inner surface of the dustproof part 17 has an angle with the central axis of the sealing connection pipe 1, and along the axial direction a of the sealing connection pipe 1, the first end of the circumferential inner surface of the dustproof part 17 is combined with the end surface of one end of the sealing connection pipe 1, and the second end is relatively far away from the central axis of the sealing connection pipe 1 relative to the first end. In this way, it is beneficial to improve the sealing effect of the sealing connection pipe 1 and the pipeline 01, and also can make the end of the sealing connection pipe 1 have a dustproof effect.

[0096] Please refer to Figure 1 to Figure 4In some embodiments of the present application, a flange 11 is formed on the surface of the sealing connection tube 1 away from the central axis, and the protruding direction of the flange 11 is the radial direction of the sealing connection tube 1 and points to the outside of the sealing connection tube 1; the end surface of the flange 11 along the axial direction a of the sealing connection tube 1 is arranged opposite to and abuts against the end surface of one end of the pipe section of the support tube 2. With such a structural form, the support tube 2 is limited by the flange 11 in the axial direction, which is conducive to maintaining the relative position of the support tube 2 and the sealing connection tube 1, and improving the stability of the installation of the support tube 2 and the sealing connection tube 1.

[0097] It can be understood that in the embodiment of the present application, the end face of the flange 11 at one end along the axial direction a of the sealing connecting tube 1 is arranged opposite to and abuts against the end face of one end of the pipe section of the support tube 2, and the relative arrangement direction is perpendicular to the protruding direction of the flange 11.

[0098] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the flange 11 extends along the circumference of the sealing connection pipe 1 to form a circumferential structure. Such a structural form is conducive to increasing the abutment area between the support pipe 2 and the flange 11, thereby facilitating the improvement of the connection strength between the sealing connection pipe 1 and the support pipe 2.

[0099] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, there are multiple flanges 11, and the multiple flanges 11 are arranged at intervals along the axial direction a of the sealing connection tube 1. Along the axial direction a of the sealing connection tube 1, the end faces of the two flanges 11 close to each other are respectively arranged opposite to and abut against the end faces of the two ends of the support tube 2. With such a structural form, along the axial direction of the support tube 2, the support tube 2 is limited by the flanges 11 in two opposite directions, which is conducive to maintaining the relative position of the support tube 2 and the sealing connection tube 1, and further conducive to improving the stability of the installation of the support tube 2 and the sealing connection tube 1.

[0100] It can be understood that, in the embodiment of the present application, along the axial direction a of the sealing connecting pipe 1 , the supporting pipe 2 is located between the two flanges 11 and supported between the two flanges 11 .

[0101] In some implementations of the present application, a flange 11 may be provided at the middle of the sealing connecting tube 1 corresponding to the supporting tube 2 to limit the middle of the supporting tube 2 and improve the stability of the installation of the supporting tube 2 and the sealing connecting tube 1 .

[0102] For example, see Fig.24 and Fig.25 In some implementations of the present application, the number of flanges 11 corresponding to the same support tube 2 is three. This is conducive to improving the stability of the installation and is more convenient for processing and manufacturing. Of course, in some embodiments of the present application, the number of flanges 11 corresponding to the same support tube 2 can also be one, two, four, five, etc.

[0103] Please refer to Figure 23 to Figure 25 In some embodiments of the present application, one of the end faces of the flange 11 that abuts against the support tube 2 along the axial direction a of the sealing connection tube 1 and the end face of the pipe section of the support tube 2 that abuts against the flange 11 is formed with a first mounting groove 111, and the other is formed with a first mounting protrusion 21. The depth direction of the first mounting groove 111 and the protruding direction of the first mounting protrusion 21 are both the axial direction a of the sealing connection tube 1, and the first mounting groove 111 cooperates with the first mounting protrusion 21. In such a structural form, the cooperation between the first mounting groove 111 and the first mounting protrusion 21 is conducive to increasing the contact area between the support tube 2 and the sealing connection tube 1, and can limit the support tube 2 in the circumferential direction of the support tube 2, which is conducive to improving the stability of the installation of the support tube 2 and the sealing connection tube 1.

[0104] Please refer to Fig.23 In some embodiments of the present application, there are multiple first mounting grooves 111, which are arranged at intervals along the circumference of the sealing connection pipe 1, and the number of the first mounting protrusions 21 is the same as that of the first mounting grooves 111, and they are arranged one-to-one with the first mounting grooves 111. Such a structural form is conducive to further improving the stability of the installation of the support pipe 2 and the sealing connection pipe 1.

[0105] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, a second mounting protrusion 12 is formed on one of the surfaces of the joint portion of the sealing connection tube 1 and the support tube 2 away from the central axis, and a second mounting groove 22 is formed on the other of the surfaces of the support tube 2 close to the central axis. The depth direction of the second mounting groove 22 and the protruding direction of the second mounting protrusion 12 are both radial directions of the sealing connection tube 1. The second mounting protrusion 12 cooperates with the second mounting groove 22 to make the support tube 2 coaxially connected to the sealing connection tube 1. In such a structural form, the cooperation between the second mounting groove 22 and the second mounting protrusion 12 is conducive to increasing the contact area between the support tube 2 and the sealing connection tube 1, and can limit the support tube 2 in the circumferential direction of the support tube 2, which is conducive to improving the stability of the installation of the support tube 2 and the sealing connection tube 1.

[0106] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, there are multiple second mounting grooves 22, which are arranged at intervals along the circumference of the support tube 2, and the number of the second mounting protrusions 12 is the same as the second mounting grooves 22, and they are arranged one-to-one with the second mounting grooves 22. Such a structural form is conducive to further improving the stability of the installation of the support tube 2 and the sealing connection tube 1.

[0107] Please refer to Figure 1 to Figure 4In some embodiments of the present application, the number of the second mounting grooves 22 is multiple, and at least two second mounting grooves 22 are arranged along the axial direction of the support tube 2, for example, respectively located at the two ends of the support tube 2, and the number of the second mounting protrusions 12 is the same as the second mounting grooves 22, and they are arranged one-to-one with the second mounting grooves 22. With such a structural form, the stability of the installation of the two ends of the support tube 2 and the sealing connection tube 1 is enhanced, thereby further improving the stability of the installation of the support tube 2 and the sealing connection tube 1.

[0108] In some embodiments of the present application, the end surface of one end of the second installation groove 22 along the axial direction of the support tube 2 is flush with the end surface of one end of the support tube 2. In this way, the second installation groove 22 is easily processed.

[0109] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the connecting tube assembly further includes an adhesive layer, and the circumferential inner surface of the support tube 2 is bonded to the circumferential outer surface of the sealing connecting tube 1 through the adhesive layer, so that the support tube 2 is coaxially connected to the outer periphery of the sealing connecting tube 1. Such a structural form is conducive to the stable connection between the support tube 2 and the sealing connecting tube 1, so that the support tube 2 is not easy to fall off from the sealing connecting tube 1, and even if the sealing connecting tube 1 undergoes a large axial or radial deformation, the support tube 2 can better maintain a state of being coaxially connected to the outer periphery of the sealing connecting tube 1.

[0110] In the embodiment of the present application, the bonding layer is realized by an adhesive. During the installation process of the support tube 2 and the sealing connecting tube 1, the adhesive can be sprayed on the circumferential inner surface of the support tube 2, and then the circumferential inner surface of the support tube 2 is fixed to the circumferential outer surface of the sealing connecting tube 1, so that the circumferential inner surface of the support tube 2 and the circumferential outer surface of the sealing connecting tube 1 are bonded through the bonding layer.

[0111] In some embodiments of the present application, the pull-off force between the support tube 2 and the sealing connection tube 1 is greater than or equal to 100 Newtons.

[0112] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the circumferential inner surface of the support tube 2 is completely in contact with the circumferential outer surface of the sealing connection tube 1, so that the support tube 2 is coaxially connected to the outer periphery of the sealing connection tube 1. Such a structural form is conducive to the stable connection between the support tube 2 and the sealing connection tube 1, so that the support tube 2 is not easy to fall off from the sealing connection tube 1.

[0113] In some embodiments of the present application, the surfaces of the support tube 2 and the sealing connection tube 1 that contact each other can be completely bonded by the adhesive layer, so that the support tube 2 is coaxially connected to the sealing connection tube 1. Such a structural form can make the connection between the support tube 2 and the sealing connection tube 1 more stable, thereby making it difficult for the support tube 2 to fall off from the sealing connection tube 1.

[0114] Please refer to Figure 6 and Figure 7 , Figure 6 and Figure 7 Belong to the same embodiment. In other embodiments of the present application, a first installation cavity 1x is provided on the peripheral side of the end of the sealing connection tube 1, one end of the support tube 2 is covered in the first installation cavity 1x, and the other end of the support tube 2 extends along the radial direction of the sealing connection tube 1 and points to the outside of the sealing connection tube 1 for connecting external components. Such a structural form is conducive to the integration of the connection tube assembly and can also improve the stability of the support tube 2 installed on the sealing connection tube 1.

[0115] In some embodiments of the present application, the support tube 2 can be integrally formed with the sealing connection tube 1, such as integrally injection molded, to facilitate processing and manufacturing.

[0116] In some embodiments of the present application, the other end of the support tube 2 extends radially along the sealing connecting tube 1 and points to the outside of the sealing connecting tube 1 to form a flange-like structure, and a third connecting portion 24 is provided at the other end of the support tube 2, and the specific structure of the third connecting portion 24 can be a slot, a buckle, a threaded hole or the like, which is specifically set according to the structure of the external component connected to the third connecting portion 24, and the present application does not make any specific limitation on this.

[0117] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, a sealing convex rib 13 is formed on the surface of the portion where the sealing connection pipe 1 and the support pipe 2 are joined and close to the central axis. The protruding direction of the sealing convex rib 13 is the radial direction of the sealing connection pipe 1 and points to the central axis of the sealing connection pipe 1, so that along the radial direction of the sealing connection pipe 1, the circumferential outer surface of the portion where the pipeline 01 and the sealing connection pipe 1 are joined and the circumferential inner surface of the support pipe 2 can jointly squeeze the sealing convex rib 13, so that the sealing convex rib 13 is elastically compressed. With such a structural form, the sealing convex rib 13 is conducive to further improving the sealing effect of the coaxial sleeve connection between the sealing connection pipe 1 and the pipeline 01.

[0118] Please refer to Figure 1 to Figure 4 It can be understood that, in the embodiment of the present application, the pipe section of the sealing connection pipe 1 joined with the pipeline 01 and the pipe section joined with the support pipe 2 have an overlapping section, and the sealing rib 13 is arranged on the surface of the overlapping section close to the central axis, so that the circumferential outer surface of the joint portion between the pipeline 01 and the sealing connection pipe 1 and the circumferential inner surface of the support pipe 2 can jointly squeeze the sealing rib 13 along the radial direction of the sealing connection pipe 1, that is, the circumferential outer surface of the joint portion between the pipeline 01 and the sealing connection pipe 1 applies force to the sealing rib 13 in the opposite direction of the protrusion of the sealing rib 13, and the circumferential inner surface of the support pipe 2 applies force to the sealing rib 13 in the protrusion direction of the sealing rib 13.

[0119] Please refer to Figure 1 to Figure 4In some embodiments of the present application, along the radial direction of the sealing connection pipe 1, the circumferential outer surface of the joint portion of the pipeline 01 and the sealing connection pipe 1 and the circumferential inner surface of the support pipe 2 can jointly squeeze the sealing rib 13, so that the sealing rib 13 produces an elastic compression rate of 5% to 45%. In this way, the sealing effect of the coaxial sleeve connection between the sealing connection pipe 1 and the pipeline 01 can be better.

[0120] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, there are multiple sealing ribs 13, which are arranged at intervals along the axial direction a of the sealing connection pipe 1, and each portion of the sealing connection pipe 1 corresponding to each support pipe 2 is provided with at least one sealing rib 13. Such a structural form is conducive to further improving the sealing effect of the coaxial sleeve connection between the sealing connection pipe 1 and the pipeline 01.

[0121] In some embodiments of the present application, the number of sealing ribs 13 provided on the portion of the sealing connection tube 1 corresponding to each support tube 2 may be one, two, three, four or five.

[0122] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the sealing rib 13 extends along the circumference of the sealing connection pipe 1 to form a circumferential structure, and the sealing rib 13 is used to abut against the outer circumference of the pipeline 01. Such a structural form is conducive to increasing the contact area between the sealing rib 13 and the pipeline 01, thereby further improving the sealing effect of the coaxial sleeve connection between the sealing connection pipe 1 and the pipeline 01.

[0123] Please refer to Figure 1 to Figure 4 In some embodiments of the present application, the length of the sealing rib 13 in the axial direction a of the sealing connection pipe 1 gradually decreases along the radial direction inward of the sealing connection pipe 1. In this way, the deformation ability of the sealing rib 13 can be made stronger, thereby further improving the sealing effect of the coaxial sleeve connection between the sealing connection pipe 1 and the pipeline 01. In addition, when the pipeline 01 extends into the sealing connection pipe 1, the contact area between the sealing rib 13 and the pipeline 01 can be reduced to reduce the resistance of the sealing rib 13 to the movement of the pipeline 01 extending into the sealing connection pipe 1, thereby facilitating the installation of the pipeline 01 and the sealing connection pipe 1.

[0124] Please refer to Figure 3 , Figure 8 and Fig. 9 In some embodiments of the present application, the length of the sealing rib 13 in the axial direction a of the sealing connection pipe 1 gradually decreases, so that the cross-sectional shape of the sealing rib 13 in the axial direction a of the sealing connection pipe 1 is set to one of a trapezoid, a triangle or an arc. The sealing rib 13 is set to the above shape to make the sealing rib 13 more deformable, thereby further improving the sealing effect of the coaxial sleeve connection between the sealing connection pipe 1 and the pipeline 01.

[0125] Furthermore, the sealing rib 13 is configured in the above-mentioned shape to reduce the contact area between the end surface of the sealing rib 13 and the pipe 01 along the protruding direction, so as to reduce the resistance of the sealing rib 13 to the movement of the pipe 01 extending into the sealing connection pipe 1 during the process of the pipe 01 extending into the sealing connection pipe 1. Specifically, the sealing rib 13 having a triangular cross-sectional shape, please refer to Figure 3 ; The cross-sectional shape is set to be an arc-shaped sealing rib 13, please refer to Figure 8 ; The cross-sectional shape of the sealing rib 13 is set to be trapezoidal, please refer to Fig. 9 .

[0126] Please refer to Fig. 9 In some embodiments of the present application, a first connection portion 15 is further formed on the surface of the sealed connection pipe 1 away from the central axis, and the first connection portion 15 is located in the middle of the sealed connection pipe 1. The first connection portion 15 is used to cooperate with an external device so that the connection pipe assembly can be fixed on the external device. For example, the external device can be set as a claw, and the first connection portion 15 can be a first matching groove, which is formed by the circumferential outer surface of the sealed connection pipe 1 being concave in the direction close to the central axis, and the claw can grasp the first matching groove of the sealed connection pipe 1 so that the claw can firmly grasp the connection pipe assembly.

[0127] Please refer to Figure 10-Figure 14 In some embodiments of the present application, a second connection portion 23 is further formed on the surface of the support tube 2 away from the central axis. The second connection portion 23 can be a second matching groove or a second matching protrusion, etc. The second matching groove is formed by the circumferential outer surface of the support tube 2 being concave in the direction close to the central axis, and the second matching protrusion is formed by the circumferential outer surface of the support tube 2 being convex in the direction away from the central axis.

[0128] In some embodiments of this application, please refer to Figure 10 to Figure 12 , a second connection portion 23 may be provided at one or both ends of the support tube 2 as appropriate. Fig.13 and Fig.14 , a second connecting portion 23 may be provided in the middle of the support tube 2 as appropriate.

[0129] It needs to be explained that Figure 10 to Figure 14 In the figure, the up-down direction parallel to the paper surface is the axial direction of the support tube 2.

[0130] In some embodiments of this application, please refer to Figure 6 , Figure 7 , Fig.15 and Fig.16 The support tube 2 is provided with a third connecting portion 24 for connecting an external component.

[0131] For details, please refer to Figure 6 and Figure 7The third connection portion 24 can be configured as a slot or a threaded hole for clamping or screwing the support tube 2 onto the external component; please refer to Fig.15 and Fig.16 The third connection part 24 can also be set as a hook-shaped structure, and the hook-shaped structure is used to be hung on the external component; the third connection part 24 can also be set as other structures, which can be set according to the arrangement of the third connection part 24 and the specific structure of the external component, and this application does not make specific restrictions on this. In addition, the setting of the third connection part 24 allows the support tube 2 to be fixed on the external component relatively fixed to the pipeline 01, so as to ensure the stability of the support tube 2, thereby improving the sealing effect.

[0132] In some embodiments of the present application, there are multiple third connection parts 24, and the multiple third connection parts 24 are arranged at intervals along the circumference of the support tube 2. In this structural form, the multiple third connection parts 24 can be connected to the external component together, which is conducive to ensuring the stability of the support tube 2, thereby improving the sealing effect.

[0133] It needs to be explained that Fig.15 In the figure, the direction perpendicular to the paper surface is the axial direction of the support tube 2.

[0134] Please refer to Figure 1-Figure 4 In some embodiments of the present application, two support tubes 2 are provided, and the two ends of the sealing connection tube 1 are coaxially connected to the corresponding support tubes 2, so that the two support tubes 2 and the two pipes 01 respectively apply extrusion force to the pipe wall of the sealing connection tube 1. In this structural form, the connection between the two pipes 01 and the sealing connection tube 1 is well sealed. It can be understood that the structural parameters such as the length and shape of the two support tubes 2 can be the same or different, depending on the actual sealing situation.

[0135] On the basis that the two ends of the sealing connecting tube 1 are coaxially connected to the two supporting tubes 2, in some embodiments of the present application, along the axial direction a of the sealing connecting tube 1, the distance between the first connecting portion 15 and the two supporting tubes 2 is the same, so as to facilitate external equipment including claws to grasp the connecting tube assembly.

[0136] Please refer to Figures 17 to 21 , Figures 17 to 21 Belonging to the same embodiment, in some embodiments of the present application, the connecting pipe assembly further includes a first support body 3, the first support body 3 is made of a rigid material; the first support body 3 is coaxially connected to the middle part of the sealing connecting pipe 1 to support the middle part of the sealing connecting pipe 1. In addition, along the axial direction a of the sealing connecting pipe 1, the first support body 3 and the support pipe 2 are spaced apart on the sealing connecting pipe 1.

[0137] In such a structural form, the first support body 3 is made of a rigid material and is coaxially connected to the middle part of the sealing connection tube 1, which can support the middle part of the sealing connection tube 1 to reduce the deformation degree of the sealing connection tube 1 and improve the pressure resistance of the sealing connection tube 1, thereby helping to improve the sealing effect of the connection tube assembly and also improve the service life of the connection tube assembly. In the tube wall of the sealing connection tube 1, along the axial direction a of the sealing connection tube 1, the first support body 3 and the support tube 2 are spaced apart on the sealing connection tube 1, that is, the part of the sealing connection tube 1 located between the first support body 3 and the support tube 2 only includes the sealing connection tube 1, so the part of the sealing connection tube 1 located between the first support body 3 and the support tube 2 is made of a flexible material and has a large deformation capacity, which is conducive to ensuring the connection tube assembly's ability to absorb the position tolerance of the two pipes 01, and especially the ability to absorb the eccentricity tolerance.

[0138] It is understandable that in the embodiment of the present application, the sealing connecting tube 1 is made of a flexible material. If the fluid pressure inside the sealing connecting tube 1 is too large, the pressure is likely to cause the circumferential tube wall of the sealing connecting tube 1 to bulge outward along the radial direction of the sealing connecting tube 1. The tube wall of the sealing connecting tube 1 bulges repeatedly, which is prone to fatigue damage. In severe cases, there is a risk of bursting of the tube wall. The end of the sealing connecting tube 1 is sleeved with a support tube 2 made of a rigid material. The support tube 2 can fully support the circumferential tube wall of the sealing connecting tube 1 in the radial direction inward. The pressure generated by the fluid in the sealing connecting tube 1 on the end of the sealing connecting tube 1 will be transmitted to the support tube 2, that is, the radially outward pressure generated by the internal fluid on the circumferential tube wall of the sealing connecting tube 1 does not need to be fully borne by the sealing connecting tube 1. The pressure can be offset by the radially inward pressure generated by the support tube 2 on the circumferential tube wall of the sealing connecting tube 1, so that the support tube 2 can limit the above-mentioned bulging of the tube wall of the sealing connecting tube 1, thereby making the end tube section of the sealing connecting tube 1 not easy to burst. Similarly, the middle part of the sealed connecting tube 1 is sleeved with a first support body 3 made of a rigid material. The first support body 3 can fully support the middle tube wall of the sealed connecting tube 1. The radially outward pressure generated by the internal fluid on the circumferential tube wall in the middle of the sealed connecting tube 1 will be transmitted to the first support body 3, so that the first support body 3 can limit the bulging of the tube wall of the sealed connecting tube 1, thereby making the middle tube section of the sealed connecting tube 1 less likely to burst.

[0139] It needs to be explained that in the embodiment of the present application, the middle part of the sealing connecting tube 1 is the pipe section along the axial direction a of the sealing connecting tube 1, and the sealing connecting tube 1 is located between the two support tubes 2, that is, along the axial direction a of the sealing connecting tube 1, the first support body 3 is located between the two support tubes 2.

[0140] In the embodiment of the present application, the material of the first support body 3 can be set to a rigid material such as plastic, metal, etc., and the material of the first support body 3 can be the same as or different from the material of the support tube 2, which can be specifically set according to actual needs.

[0141] Please refer to Figures 17 to 20 In some embodiments of the present application, a second installation cavity 1y is provided on the peripheral side of the middle of the sealed connecting pipe 1, and the first support body 3 is covered in the second installation cavity 1y. Such a structural form is conducive to the integration of the connecting pipe assembly and can also improve the stability of the installation of the first support body 3 on the sealed connecting pipe 1.

[0142] In some embodiments of the present application, the first support body 3 can be integrally formed with the sealing connection tube 1, such as integrally injection molded, to facilitate processing and manufacturing.

[0143] Please refer to Figures 17 to 20 In some embodiments of the present application, a first limiting protrusion 31 is also formed on the surface of the first support body 3 close to the central axis, and the protruding direction of the first limiting protrusion 31 is the radial direction of the sealing connecting pipe 1 and points to the central axis of the sealing connecting pipe 1; the first limiting protrusion 31 is used to axially limit one end of the two pipes 01 extending into the sealing connecting pipe 1.

[0144] With such a structural form, during the process of assembling the two pipes 01, that is, during the process of the two pipes 01 extending into the sealed connecting pipe 1, after one end of the pipe 01 extending into the sealed connecting pipe 1 reaches the first limiting protrusion 31, the two end surfaces of the first limiting protrusion 31 in the axial direction a of the sealed connecting pipe 1 can resist the end surface of one end of the pipe 01 extending into the sealed connecting pipe 1, so as to axially limit the two pipes 01, that is, to provide a position reference for the pipe 01 extending into the sealed connecting pipe 1. In addition, during the process of assembling the two pipes 01, if the axes of the two pipes 01 are not in the same straight line, that is, when there is an eccentric tolerance in the two pipes 01, since the sealed connecting pipe 1 is flexible, the flexible area of ​​the sealed connecting pipe 1 located between the first support body 3 and the two support pipes 2 can be deformed to compensate for the eccentric tolerance of the two pipes 01, thereby improving the sealing between the sealed connecting pipe 1 and the two pipes 01, and making the assembly between the sealed connecting pipe 1 and the two pipes 01 faster.

[0145] In some embodiments of this application, please refer to Fig.21 The first limiting protrusion 31 extends along the circumference of the first support body 3 to form a peripheral structure. This is beneficial to further improve the axial limiting effect.

[0146] In the embodiment of the present application, the inner diameter of the annular first limiting protrusion 31 is smaller than the outer diameter of one end of the two pipes 01 extending into the sealed connecting pipe 1, so that the end surface of one end of the two pipes 01 extending into the sealed connecting pipe 1 can abut against the two axial end surfaces of the first limiting protrusion 31 on the first support body 3.

[0147] Please refer to Fig.21In some embodiments of the present application, a reinforcing protrusion 32 is formed on the surface of the first support body 3 close to the central axis, and the protruding direction of the reinforcing protrusion 32 is the radial direction of the first support body 3. Of course, the reinforcing protrusion 32 can also be set on the surface of the first support body 3 away from the central axis. In such a structural form, the reinforcing protrusion 32 can strengthen the side wall of the first support body 3, thereby improving the support strength of the first support body 3.

[0148] In some embodiments of the present application, there are multiple reinforcing protrusions 32, and the multiple reinforcing protrusions 32 are arranged at intervals along the circumference of the first support body 3. Such a structural form is conducive to further improving the support strength of the first support body 3. In addition, the cross-sectional shape of the reinforcing protrusion 32 along the axial direction of the first support body 3 can be an arc, a trapezoid, a triangle, etc.

[0149] Please refer to Figure 22 to Figure 28 , Figure 22 to Figure 28 As another embodiment, in some embodiments of the present application, the connecting pipe assembly further includes two second supports 4, which are made of a rigid material; the second supports 4 are coaxially arranged on the outer periphery of the middle part of the sealing connecting pipe 1, and one end of the two second supports 4 abut against each other, and the other ends of the two second supports 4 respectively abut against the two ends of the two supporting pipes 2 that are close to each other. Along the radial direction of the sealing connecting pipe 1, the circumferential inner surface of the second supports 4 is spaced from the circumferential outer surface of the sealing connecting pipe 1, so that the portion of the sealing connecting pipe 1 corresponding to the second supports 4 can be elastically deformed along its radial direction, and when the circumferential outer surface of the sealing connecting pipe 1 contacts the circumferential inner surface of the second supports 4, the portion of the sealing connecting pipe 1 corresponding to the second supports 4 is supported.

[0150] With such a structural form, the two second support bodies 4 can generate relative movement along the radial direction of the sealing connection pipe 1, and the circumferential inner surface of the second support body 4 is spaced from the circumferential outer surface of the sealing connection pipe 1, so that the portion of the sealing connection pipe 1 corresponding to the second support body 4 can generate elastic deformation along its radial direction, so that the connection pipe assembly can absorb the position tolerance of the two pipes 01, and especially the eccentricity tolerance. The second support body 4 is made of a rigid material and is coaxially arranged in the middle of the sealing connection pipe 1, so that when the circumferential outer surface of the sealing connection pipe 1 contacts the circumferential inner surface of the second support body 4, the middle of the sealing connection pipe 1 can be supported, so as to reduce the deformation degree of the sealing connection pipe 1 and improve the pressure resistance of the sealing connection pipe 1, thereby facilitating the improvement of the sealing effect of the connection pipe assembly and the service life of the connection pipe assembly.

[0151] It needs to be explained that in the embodiment of the present application, the middle part of the sealing connecting tube 1 is the pipe section along the axial direction a of the sealing connecting tube 1, and the sealing connecting tube 1 is located between the two support tubes 2, that is, along the axial direction a of the sealing connecting tube 1, the two second support bodies 4 are located between the two support tubes 2, and one end of the two second support bodies 4 abut against each other, and the other ends of the two second support bodies 4 respectively abut against the two ends of the two support tubes 2 close to each other, so as to axially limit the two second support bodies 4, so that the two second support bodies 4 are both located in the middle part of the sealing connecting tube 1.

[0152] In the embodiment of the present application, the material of the second support body 4 can be set to a rigid material such as plastic or metal, and the materials of the two second support bodies 4, as well as the materials of the second support body 4 and the support tube 2 can be the same or different. In addition, the structural parameters such as the length and shape of the two second support bodies 4 can be the same or different. The specific setting can be based on actual needs.

[0153] Please refer to Fig.24 , Fig.25 , Fig. 27 as well as Fig.28 In some embodiments of the present application, a support protrusion 14 is formed on the surface of the sealing connecting tube 1 corresponding to the portion of the second support body 4 away from the central axis, and the protruding direction of the support protrusion 14 is radial to the sealing connecting tube 1 and points to the outside of the sealing connecting tube 1; the support protrusion 14 can abut against the circumferential inner surface of the second support body 4 along the protruding direction.

[0154] With such a structural form, when the internal fluid generates radially outward pressure on the circumferential tube wall of the sealing connecting tube 1, the sealing connecting tube 1 bulges radially outward, so that the support protrusion 14 moves in the protruding direction under the action of the pressure until the support protrusion 14 abuts against the circumferential inner surface of the second support body 4 in the protruding direction. At this time, if the internal fluid continues to generate radially outward pressure on the circumferential tube wall of the sealing connecting tube 1, the support protrusion 14 will be compressed and deformed due to the obstruction of the support protrusion 14 by the second support body 4, which is beneficial to reduce the degree of radially outward bulging of the circumferential tube wall of the sealing connecting tube 1.

[0155] In some embodiments of the present application, the number of the supporting protrusions 14 is multiple, for example, two, three or four, etc., and the multiple supporting protrusions 14 are arranged along the axial direction a of the sealing connecting pipe 1. In this way, it is helpful to further reduce the bulging degree of the circumferential tube wall of the sealing connecting pipe 1 in the radial direction outward. Of course, in other embodiments of the present application, the number of the supporting protrusions 14 can also be one.

[0156] In some embodiments of the present application, the support protrusion 14 extends along the circumference of the sealing connection pipe 1 to form a circumferential structure. Such a structural form is conducive to further reducing the bulging degree of the circumferential tube wall of the sealing connection pipe 1 in the radial direction outward.

[0157] In some embodiments of the present application, the length of the support protrusion 14 in the axial direction a of the sealing connecting tube 1 gradually decreases radially outwardly, so that the cross-section of the support protrusion 14 in the axial direction a of the sealing connecting tube 1 is one or more of a triangle, a trapezoid, and a circular arc.

[0158] Please refer to Figure 22-Figure 25 In some embodiments of the present application, the connecting tube assembly also includes at least two clamping arms 5, which are elastic, and at least one clamping arm 5 is arranged between each second support body 4 and the corresponding support tube 2, and one end of the clamping arm 5 along the axial direction a of the sealing connecting tube 1 is connected to the second support body 4, and the other end abuts against the end surface of the support tube 2 close to the second support body 4.

[0159] In such a structural form, the two ends of the two second support bodies 4 arranged opposite to each other are respectively abutted against the two ends of the two support tubes 2 arranged opposite to each other through the corresponding clamping arms 5, and the two ends of the two second support bodies 4 arranged opposite to each other are abutted against each other to axially limit the two second support bodies 4, so that the two second support bodies 4 are both located in the middle of the sealing connecting tube 1.

[0160] In the embodiment of the present application, a plurality of clamping arms 5 are disposed between each second support body 4 and the corresponding support tube 2 , and the plurality of clamping arms 5 are arranged at intervals along the circumference of the second support body 4 .

[0161] In the embodiment of the present application, the clamping arm 5 and the corresponding second support body 4 can be integrally formed, or can be fixedly connected by bonding, clamping, etc., and the present application does not make any specific limitation on this.

[0162] It can be understood that both ends of the sealing connection tube 1 are fixedly connected to the rigid support tube 2, so the inner diameter of the rigid second support body 4 needs to be equal to or slightly larger than the outer diameter of the support tube 2, so that the second support body 4 can pass through the outer surface of the support tube 2. The clamp arm 5 is elastic, so the distance between the two clamp arms 5 arranged opposite to each other along the radial direction of the second support body 4 is at least smaller than the outer diameter of the support tube 2 at the end position, so that the clamp arm 5 can abut against the end of the support tube 2. When installing the second support body 4, the second support body 4 is sleeved on the outer periphery of the support tube 2, and the second support body 4 is moved along the axial direction a of the sealing connection tube 1, so that the clamp arm 5 is elastically deformed radially outward along the support tube 2. When the second support body 4 moves to the middle of the sealing connection tube 1, the side wall of the clamp arm 5 leaves the circumferential outer surface of the support tube 2, so that the clamp arm 5 rebounds radially inward along the support tube 2, and the free end of the clamp arm 5 away from the second support body 4 abuts against the end of the support tube 2, so as to complete the installation process of the second support body 4. And, see Fig.25 A step portion may also be provided on the outer periphery of the end portion of the support tube 2. The outer surface diameter of the support tube 2 at the step portion is smaller than the outer surface diameter of the middle portion of the support tube 2, so that the free end of the clamping arm 5 away from the second support body 4 can abut against the step portion, thereby improving the installation stability.

[0163] Please refer to Figure 26-Figure 28 In some embodiments of the present application, one of the circumferential outer surface of the support tube 2 and the circumferential inner surface of the second support body 4 is provided with a guide groove 6, and the other of the circumferential outer surface of the support tube 2 and the circumferential inner surface of the second support body 4 is provided with a protrusion 7 adapted to the guide groove 6. The guide groove 6 is bent, and both ends of the guide groove 6 extend to both ends of the support tube 2 or the second support body 4 in the axial direction a of the sealing connection tube 1. The protrusion 7 can slide along the guide groove 6, so that the second support body 4 coaxially slides into the middle of the sealing connection tube 1 through the guide groove 6.

[0164] With such a structural form, the protrusion 7 can slide along the guide groove 6 so that the second support body 4 can coaxially slide into the middle of the sealing connecting pipe 1 through the guide groove 6, thereby facilitating the installation of the second support body 4.

[0165] It should be noted that after the second support body 4 coaxially slides into the middle of the sealing connecting tube 1 through the guide groove 6, the second support body 4 needs to be rotated relative to the sealing connecting tube 1 along its circumferential direction so that the protrusion 7 and the sliding end of the guide groove 6 are not in the same circumferential position.

[0166] Furthermore, after the second support body 4 coaxially slides into the middle of the sealing connection pipe 1 through the guide groove 6, the curved setting of the guide groove 6 can greatly reduce the possibility of the protrusion 7 sliding out of the guide groove 6, thereby improving the stability of the installation.

[0167] In the embodiment of the present application, the shape of the protrusion 7 can be rectangular, hemispherical, etc., and the guide groove 6 is configured to adapt to the shape of the protrusion 7, which is not specifically limited in the present application.

[0168] It is understandable that both ends of the sealing connecting tube 1 are fixedly connected to the rigid support tube 2, so the inner diameter of the rigid second support body 4 needs to be equal to or slightly larger than the outer diameter of the support tube 2 so that the second support body 4 can pass through the outer surface of the support tube 2.

[0169] In the present application examples, see Fig.26 and Fig. 27 When the guide groove 6 is arranged on the circumferential outer surface of the support tube 2 and the protrusion 7 is arranged on the circumferential inner surface of the second support body 4, in order to enable the two ends of the two second support bodies 4 arranged opposite to each other to respectively abut against the two ends of the two support tubes 2 arranged opposite to each other, the protrusion 7 is arranged on the side of the circumferential inner surface of the second support body 4 opposite to the support tube 2.

[0170] Reference Fig.28 When the guide groove 6 is arranged on the circumferential inner surface of the second support body 4 and the protrusion 7 is arranged on the circumferential outer surface of the support tube 2, in order to enable the two ends of the two second support bodies 4 arranged opposite to each other to respectively abut against the two ends of the two support tubes 2 arranged opposite to each other, the protrusion 7 is arranged on the side of the circumferential outer surface of the support tube 2 opposite to the second support body 4.

[0171] It can be understood that the two ends of the two second support bodies 4 arranged back to back respectively abut against the opposite ends of the two support tubes 2, and the two ends of the two second support bodies 4 arranged facing each other abut against each other to axially limit the two second support bodies 4, thereby making the two second support bodies 4 located in the middle of the sealing connecting tube 1.

[0172] Of course, please refer to Figure 29 to Figure 32 In some embodiments of the present application, the connecting pipe assembly may not include the first support body 3 and the second support body 4. In this way, the deformation capacity of the deformation pipe section of the sealing connecting pipe 1 located between the two support pipes 2 is larger, which is conducive to better absorbing the position tolerance of the two pipes 01, and especially the eccentricity tolerance of the two pipes 01.

[0173] On this basis, please refer to Figure 29 to Figure 31 In some embodiments of the present application, a reinforcing protrusion 18 is formed on the surface of the sealing connecting tube 1 away from the central axis, and the protruding direction of the reinforcing protrusion 18 is the radial direction of the sealing connecting tube 1 and points to the outside of the sealing connecting tube 1; the reinforcing protrusion 18 is located in the middle of the sealing connecting tube 1.

[0174] In the embodiment of the present application, the provision of the reinforcing protrusion 18 can better improve the strength of the middle portion of the sealing connecting tube 1, so as to reduce the risk of bursting of the sealing connecting tube 1 when the internal fluid generates radially outward pressure on the circumferential tube wall of the sealing connecting tube 1.

[0175] It should be noted that the role of the reinforcing protrusion 18 in this embodiment is similar to Fig.24 , Fig.25 , Fig. 27 as well as Fig.28 The supporting protrusions 14 in the embodiment have the same function, which is to improve the strength of the middle part of the sealing connecting tube 1. The difference is that the reinforcing protrusions 18 in this embodiment are arranged in the middle part of the sealing connecting tube 1 of the connecting tube assembly that does not include the first supporting body 3 and the second supporting body 4. When the internal fluid exerts radially outward pressure on the circumferential tube wall of the sealing connecting tube 1, the middle part of the sealing connecting tube 1 bulges radially outward. The reinforcing protrusions 18 can only strengthen the middle part of the sealing connecting tube 1 to reduce the risk of the sealing connecting tube 1 bursting. Fig.24 , Fig.25 , Fig. 27 as well as Fig.28 The support protrusion 14 is arranged in the middle part of the sealing connecting tube 1 of the connecting tube assembly including the second support body 4. When the internal fluid generates radially outward pressure on the circumferential tube wall of the sealing connecting tube 1, the middle part of the sealing connecting tube 1 bulges radially outward. The support protrusion 14 can not only strengthen the middle part of the sealing connecting tube 1, but also cooperate with the second support body 4 when the support protrusion 14 moves along the radial direction with the sealing connecting tube 1 and contacts the circumferential inner surface of the second support body 4, so that the support protrusion 14 produces compression deformation, which is beneficial to reduce the degree of radial outward bulging of the circumferential tube wall of the sealing connecting tube 1.

[0176] Please refer to Figure 29 to Figure 31 In some embodiments of the present application, the number of the reinforcing protrusions 18 is multiple, for example, two, three or four, etc., and the multiple reinforcing protrusions 18 are arranged along the axial direction a of the sealing connection pipe 1. In this way, it is helpful to further reduce the risk of bursting of the sealing connection pipe 1. Of course, in some embodiments of the present application, the number of the reinforcing protrusions 18 can also be one.

[0177] Please refer to Figure 29 to Figure 31 In some embodiments of the present application, the reinforcing protrusion 18 extends along the circumference of the sealing connection pipe 1 to form a circumferential structure. Such a structural form is conducive to further reducing the risk of the sealing connection pipe 1 bursting.

[0178] In some embodiments of the present application, the length of the reinforcing protrusion 18 in the axial direction a of the sealing connecting pipe 1 gradually decreases from radially outward of the sealing connecting pipe 1. In this way, the processing and manufacturing of the reinforcing protrusion 18 is facilitated.

[0179] In some embodiments of the present application, the length of the reinforcing protrusion 18 in the axial direction a of the sealing connecting pipe 1 gradually decreases so that the cross-sectional profile of the reinforcing protrusion 18 is trapezoidal, triangular or arc-shaped, etc., and the cross-sectional profile is the cross-sectional profile of the axial direction a of the sealing connecting pipe 1. For arc-shaped, please refer to Fig.29 , trapezoid, please refer to Fig.30 .

[0180] In some embodiments of the present application, the radially outward extension size of the reinforcing protrusion 18 along the sealing connecting pipe 1 can be set according to actual needs. For example, the reinforcing protrusion 18 can be set to Fig.29 The relatively small extension dimension radially outward along the sealing connecting pipe 1 can also make the reinforcing protrusion 18 be set as Fig.31 The relatively large extension dimension radially outward along the sealing connecting pipe 1.

[0181] In some other embodiments, the reinforcing protrusion 18 may also be formed on the surface of the sealing connection pipe 1 close to the central axis. In this case, the protruding direction of the reinforcing protrusion 18 points to the inside of the sealing connection pipe 1 .

[0182] Please refer to Fig.31 In some embodiments of the present application, one end of one of the two pipes 01 is coaxially embedded in one end of the sealing connection pipe 1, and the other end is bent and extends toward the other pipe 01 of the two pipes 01, so that the cross section of one of the pipes 01 in the axial direction a of the sealing connection pipe 1 is "U" shaped. In addition, the reinforcing protrusion 18 is located between the other end of one of the pipes 01 and the sealing connection pipe 1.

[0183] For example, one of the two pipes 01 includes an embedded section 011, a connecting section 012 and an extension section 013, the embedded section 011 is coaxially embedded in one end of the sealing connecting pipe 1, the two ends of the connecting section 012 are respectively connected to the embedded section 011 and the extension section 013, and the connecting section 012 extends along the radial direction of the sealing connecting pipe 1; the extension section 013 extends toward the other pipe 01 of the two pipes 01, so that one of the pipes 01 composed of the embedded section 011, the connecting section 012 and the extension section 013 has a "U" shape in the cross-section in the axial direction a of the sealing connecting pipe 1, and the reinforcing protrusion 18 is located between the extension section 013 and the sealing connecting pipe 1.

[0184] With such a structural form, when the internal fluid exerts radially outward pressure on the circumferential tube wall of the sealing connection tube 1, the middle part of the sealing connection tube 1 bulges radially outward, and the reinforcing protrusion 18 can not only strengthen the middle part of the sealing connection tube 1, but also abut against the extension section 013 as the middle part of the sealing connection tube 1 moves radially outward, and the reinforcing protrusion 18 is compressed and deformed under the obstruction of the extension section 013, thereby helping to reduce the degree of radial outward bulging of the circumferential tube wall of the sealing connection tube 1. Therefore, this arrangement can improve the high-pressure bearing capacity of the connection tube assembly, so that the connection tube assembly can also have a high sealing performance when it is in a high-pressure state.

[0185] Of course, please refer to Fig.32 In some embodiments of the present application, the sealing connecting tube 1 may not be provided with the reinforcing protrusion 18 , so as to facilitate the processing and manufacturing of the sealing connecting tube 1 .

[0186] Please refer to Figure 29 to Figure 31 In some embodiments of the present application, a second limiting protrusion 19 is formed on the surface of the sealing connecting tube 1 close to the central axis, and the protruding direction of the second limiting protrusion 19 is the radial direction of the sealing connecting tube 1 and points to the central axis of the sealing connecting tube 1; the second limiting protrusion 19 is located in the middle of the sealing connecting tube 1, and the second limiting protrusion 19 is used to axially limit one end of the two pipes 01 extending into the sealing connecting tube 1.

[0187] With such a structural form, during the process of assembling the two pipes 01, that is, during the process of the two pipes 01 extending into the sealed connecting pipe 1, after one end of the pipe 01 extending into the sealed connecting pipe 1 reaches the second limiting protrusion 19, the two end surfaces of the second limiting protrusion 19 in the axial direction a of the sealed connecting pipe 1 can resist the end surface of one end of the pipe 01 extending into the sealed connecting pipe 1, so as to axially limit the two pipes 01, that is, provide a position reference for the pipe 01 extending into the sealed connecting pipe 1. In addition, during the process of assembling the two pipes 01, if the axes of the two pipes 01 are not in the same straight line, that is, when there is an eccentric tolerance in the two pipes 01, since the sealed connecting pipe 1 is flexible, the flexible area of ​​the sealed connecting pipe 1 located between the two support pipes 2 can be deformed to compensate for the eccentric tolerance of the two pipes 01, thereby improving the sealing between the sealed connecting pipe 1 and the two pipes 01, and making the assembly between the sealed connecting pipe 1 and the two pipes 01 faster.

[0188] In some embodiments of the present application, the second limiting protrusion 19 extends along the circumference of the sealing connection pipe 1 to form a peripheral structure, which is conducive to further improving the axial limiting effect.

[0189] In the embodiment of the present application, the inner diameter of the annular second limiting protrusion 19 is smaller than the outer diameter of one end of the two pipes 01 extending into the sealed connecting pipe 1, so that the end surface of one end of the two pipes 01 extending into the sealed connecting pipe 1 can be against the two end surfaces of the second limiting protrusion 19 in the axial direction a of the sealed connecting pipe 1.

[0190] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for the pipe sections or all the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A connecting pipe assembly, characterized in that: include: A sealed connecting pipe (1) is made of a flexible material; the two ends of the sealed connecting pipe (1) are respectively used to be coaxially sleeved on two pipes (01) so that the two pipes (01) are connected through the sealed connecting pipe (1); The support tube (2) is made of a rigid material and is shorter than the sealing connection tube (1); the end of the sealing connection tube (1) is coaxially arranged in the support tube (2), so that along the radial direction of the sealing connection tube (1), the circumferential outer surface of the joint portion between the pipeline (01) and the sealing connection tube (1) and the circumferential inner surface of the support tube (2) can jointly apply an extrusion force to the tube wall of the sealing connection tube (1), so that the tube wall of the sealing connection tube (1) is elastically compressed.

2. The connecting pipe assembly according to claim 1, characterized in that: It also includes an adhesive layer, through which the circumferential inner surface of the support tube (2) and the circumferential outer surface of the sealing connection tube (1) are bonded, so that the support tube (2) is coaxially connected to the outer periphery of the sealing connection tube (1).

3. The connecting pipe assembly according to claim 1, characterized in that: A flange (11) is formed on the surface of the sealing connection tube (1) away from the central axis, and the protruding direction of the flange (11) is the radial direction of the sealing connection tube (1) and points to the outside of the sealing connection tube (1); the end surface of the flange (11) along the axial direction (a) of one end of the sealing connection tube (1) is arranged opposite to and abuts against the end surface of one end of the pipe section of the support tube (2).

4. The connecting pipe assembly according to claim 3, characterized in that: The number of the flanges (11) is plural, and the plurality of flanges (11) are arranged at intervals along the axial direction (a) of the sealing connection tube (1). Along the axial direction (a) of the sealing connection tube (1), the end surfaces of two flanges (11) close to each other are respectively arranged opposite to and abut against the end surfaces at both ends of the support tube (2).

5. The connecting pipe assembly according to claim 3, characterized in that: One of the end surfaces of the flange (11) abutting against the support tube (2) along the axial direction (a) of the sealing connection tube (1) and the end surface of the tube section of the support tube (2) abutting against the flange (11) is formed with a first mounting groove (111) and the other is formed with a first mounting protrusion (21). The depth direction of the first mounting groove (111) and the protruding direction of the first mounting protrusion (21) are both axial direction (a) of the sealing connection tube (1). The first mounting groove (111) cooperates with the first mounting protrusion (21).

6. The connecting pipe assembly according to claim 5, characterized in that: The number of the first mounting grooves (111) is multiple, and the multiple first mounting grooves (111) are arranged at intervals along the circumference of the sealing connection pipe (1), and the number of the first mounting protrusions (21) is the same as the first mounting grooves (111), and they are arranged in a one-to-one correspondence with the first mounting grooves (111).

7. The connecting pipe assembly according to claim 1, characterized in that: A second mounting protrusion (12) is formed on one of the surfaces of the joint portion between the sealing connection tube (1) and the support tube (2) away from the central axis, and a second mounting groove (22) is formed on the other of the surfaces of the support tube (2) close to the central axis. The depth direction of the second mounting groove (22) and the protruding direction of the second mounting protrusion (12) are both radial directions of the sealing connection tube (1). The second mounting protrusion (12) cooperates with the second mounting groove (22) so that the support tube (2) is coaxially connected to the sealing connection tube (1).

8. The connecting pipe assembly according to claim 7, characterized in that: The number of the second mounting grooves (22) is multiple, and the multiple second mounting grooves (22) are arranged at intervals along the circumference of the sealing connection pipe (1), and the number of the second mounting protrusions (12) is the same as the second mounting grooves (22), and they are arranged in a one-to-one correspondence with the second mounting grooves (22).

9. The connecting pipe assembly according to claim 7, characterized in that: The number of the second mounting grooves (22) is multiple, and at least two second mounting grooves (22) are respectively located at two ends of the support tube (2), and the number of the second mounting protrusions (12) is the same as the second mounting grooves (22), and they are arranged in a one-to-one correspondence with the second mounting grooves (22).

10. The connecting pipe assembly according to claim 1, characterized in that: A first installation cavity (1x) is provided on the peripheral side of the end of the sealing connection tube (1), one end of the support tube (2) is covered in the first installation cavity (1x), and the other end of the support tube (2) extends along the radial direction of the sealing connection tube (1) and points to the outside of the sealing connection tube (1) for connecting an external component.

11. The connecting pipe assembly according to claim 1, characterized in that: A sealing convex rib (13) is formed on the surface of the portion where the sealing connection tube (1) and the support tube (2) are joined and close to the central axis. The convex sealing rib (13) protrudes in the radial direction of the sealing connection tube (1) and points to the central axis of the sealing connection tube (1), so that along the radial direction of the sealing connection tube (1), the circumferential outer surface of the portion where the pipeline (01) and the sealing connection tube (1) are joined and the circumferential inner surface of the support tube (2) can jointly squeeze the sealing convex rib (13), so that the sealing convex rib (13) is elastically compressed.

12. The connecting pipe assembly according to claim 11, characterized in that: The sealing ribs (13) are multiple in number, and the multiple sealing ribs (13) are arranged at intervals along the axial direction (a) of the sealing connection tube (1), and the portion of the sealing connection tube (1) corresponding to each of the support tubes (2) is provided with at least one sealing rib (13).

13. The connecting pipe assembly according to claim 11, characterized in that: The sealing rib (13) extends along the circumference of the sealing connection pipe (1) to form a peripheral structure, and the sealing rib (13) is used to abut against the outer circumference of the pipe (01).

14. The connecting pipe assembly according to claim 11, characterized in that: On the axial (a) cross section of the sealing connection pipe (1), the shape of the sealing rib (13) is set to be one of a triangle, a trapezoid, and an arc.

15. The connecting pipe assembly according to claim 1, characterized in that: Two support tubes (2) are provided, and the two ends of the sealed connecting tube (1) are coaxially connected to the corresponding support tubes (2), so that the two support tubes (2) and the two pipes (01) respectively jointly apply the extrusion force to the tube wall of the sealed connecting tube (1).

16. The connecting pipe assembly according to claim 15, characterized in that: It also includes a first support body (3), which is made of a rigid material; the first support body (3) is coaxially connected to the middle part of the sealed connecting pipe (1) to support the middle part of the sealed connecting pipe (1); and, Along the axial direction (a) of the sealed connecting tube (1), the first support body (3) and the support tube (2) are arranged on the sealed connecting tube (1) at an interval.

17. The connecting pipe assembly according to claim 16, characterized in that: A second installation cavity (1y) is provided on the peripheral side of the middle part of the sealed connecting pipe (1), and the first supporting body (3) is covered in the second installation cavity (1y).

18. The connecting pipe assembly according to claim 16, characterized in that: A first limiting protrusion (31) is also formed on the surface of the first support body (3) close to the central axis. The protruding direction of the first limiting protrusion (31) is the radial direction of the sealing connecting pipe (1) and points to the central axis of the sealing connecting pipe (1). The first limiting protrusion (31) is used to axially limit one end of the two pipes (01) extending into the sealing connecting pipe (1).

19. The connecting pipe assembly according to claim 15, characterized in that: It also comprises two second supports (4), the second supports (4) being made of a rigid material; the second supports (4) being coaxially arranged on the outer periphery of the middle part of the sealing connection tube (1), and one ends of the two second supports (4) being in contact with each other, and the other ends of the two second supports (4) being respectively in contact with the two ends of the two support tubes (2) which are close to each other; Along the radial direction of the sealing connecting tube (1), the circumferential inner surface of the second support body (4) is spaced apart from the circumferential outer surface of the sealing connecting tube (1) so that the portion of the sealing connecting tube (1) corresponding to the second support body (4) can be elastically deformed along its radial direction and support the portion of the sealing connecting tube (1) corresponding to the second support body (4) when the circumferential outer surface of the sealing connecting tube (1) contacts the circumferential inner surface of the second support body (4).

20. The connecting pipe assembly according to claim 19, characterized in that: A support protrusion (14) is formed on the surface of the sealing connection tube (1) corresponding to the portion of the second support body (4) away from the central axis. The protruding direction of the support protrusion (14) is radial to the sealing connection tube (1) and points to the outside of the sealing connection tube (1); the support protrusion (14) can abut against the circumferential inner surface of the second support body (4) along the protruding direction.

21. The connecting pipe assembly according to claim 19, characterized in that: It also comprises at least two clamping arms (5), the clamping arms (5) being elastic, and at least one clamping arm (5) being arranged between each second support body (4) and the corresponding support tube (2), one end of the clamping arm (5) along the axial direction (a) of the sealing connection tube (1) being connected to the second support body (4), and the other end being against the end surface of the support tube (2) close to the second support body (4).

22. The connecting pipe assembly according to claim 19, characterized in that: One of the circumferential outer surface of the support tube (2) and the circumferential inner surface of the second support body (4) is provided with a guide groove (6), and the other of the circumferential outer surface of the support tube (2) and the circumferential inner surface of the second support body (4) is provided with a protrusion (7) adapted to the guide groove (6); The guide groove (6) is arranged in a curved manner, and the two ends of the guide groove (6) respectively extend to the two ends of the support tube (2) or the second support body (4) in the axial direction (a) of the sealing connection tube (1); the protrusion (7) can slide along the guide groove (6) so that the second support body (4) can coaxially slide into the middle part of the sealing connection tube (1) through the guide groove (6).

23. The connecting pipe assembly according to claim 1, characterized in that: A reinforcing protrusion (18) is formed on the surface of the sealing connection tube (1) away from the central axis, the protruding direction of the reinforcing protrusion (18) is the radial direction of the sealing connection tube (1) and points to the outside of the sealing connection tube (1); the reinforcing protrusion (18) is located in the middle of the sealing connection tube (1).

24. The connecting pipe assembly according to claim 23, characterized in that: One end of one of the two pipes (01) is coaxially embedded in one end of the sealed connecting pipe (1), and the other end is bent and arranged toward the other of the two pipes (01), so that the cross section of the one of the pipes (01) in the axial direction (a) of the sealed connecting pipe (1) is "U"-shaped; and The reinforcing protrusion (18) is located between the other end of one of the pipes (01) and the sealing connecting pipe (1).

25. The connecting pipe assembly according to any one of claims 1 to 24, characterized in that: A second limiting protrusion (19) is formed on the surface of the sealed connecting tube (1) close to the central axis, and the protruding direction of the second limiting protrusion (19) is the radial direction of the sealed connecting tube (1) and points to the central axis of the sealed connecting tube (1); the second limiting protrusion (19) is located in the middle of the sealed connecting tube (1); the second limiting protrusion (19) is used to axially limit one end of the two pipes (01) extending into the sealed connecting tube (1).

26. The connecting pipe assembly according to any one of claims 1 to 24, characterized in that: The hardness of the material used to make the sealed connecting pipe (1) is 40-90HA.

27. The connecting pipe assembly according to any one of claims 1 to 24, characterized in that: The material used to make the sealing connecting pipe (1) includes at least one of the following: EPDM rubber, nitrile rubber, fluororubber, ethylene acrylate rubber, vinyl acetate rubber, silicone rubber, hydrogenated nitrile rubber, polyamide, and thermoplastic elastomer.

28. A pipeline assembly, characterized in that: include: The pipes (01) are made of a rigid material and are two in number; The connecting pipe assembly according to any one of claims 1 to 27, wherein the two ends of the sealing connecting pipe (1) are coaxially sleeved on the two pipes (01) respectively, so that the two pipes (01) are connected through the sealing connecting pipe (1); the sealing connecting pipe (1) includes a deformable pipe section, along the axial direction (a) of the sealing connecting pipe (1), the deformable pipe section is located between the parts where the two pipes (01) are connected to the sealing connecting pipe (1), and is not connected to the support pipe (2).

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