Pipeline sealing connection structure for narrow space

Abstract

The invention relates to the technical field of sealing connection, in particular to a pipeline sealing connection structure for a narrow space, which comprises two connectors used for being inserted into a pipeline, one end of each connector is provided with a non-return ring connected with the interior of the pipeline, and the side wall of each connector is provided with a baffle abutting against the end of the pipeline. The other ends of the two connectors abut against each other through a connecting device, a fastening device used for stabilizing the abutting position of the two connectors is arranged on the outer side of the connecting device, efficient and reliable pipeline connection can be achieved in a narrow space, the installation and maintenance process is greatly simplified, and the efficiency and reliability of the whole system are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sealing connection, and in particular to a pipeline sealing connection structure for a narrow space. Background Art

[0002] At present, the requirements for the external dimensions and structural accuracy of non-electrically driven machinery are becoming increasingly higher. Various mechanical products need to realize more functions under the condition of certain volume and appearance. This directly leads to the higher and higher integration of various components, and the installation space of gas and liquid pipelines used to connect various components is also getting smaller and smaller. As the "aorta" of power transmission, gas and liquid pipelines are usually split into multiple pipelines for the convenience of installation, disassembly and maintenance, and sealed and connected in a reliable way.

[0003] Commonly used pipeline sealing connection methods include cone or ball head hard seal connection, flange bolt soft seal connection and other connection forms. These connection structures need to have a relatively large outer diameter envelope under the premise of ensuring the reliability of the connection. Taking cone connection as an example, referring to the hard pipe standard HB4-1, it can be known that the minimum inner diameter of the pipeline is 4.4mm, the maximum outer diameter of the pipe body is about 6mm, the matching outer nut is M12×1, and the maximum hexagonal outer diameter is about 16.17mm, that is, the maximum envelope outer diameter of the connection form of this size is about 2.7 times the maximum inner diameter of the pipeline. The outer diameter of the hose that can withstand 10.5MPa pressure that matches this inner diameter is about 12mm, but the matching outer nut is also M12×1. In order to meet the high integration of gas and liquid systems, there are often some special narrow spaces for the layout of the transmission pipeline. The layout space of the pipeline may be only about 1 times the outer diameter of the pipe body. Obviously, in some specific narrow spaces, when using pipelines for gas and liquid transportation, it is difficult to achieve a detachable sealed connection with conventional connection methods under the premise that the pipeline has to be disconnected. Summary of the invention

[0004] The purpose of the present invention is to overcome the disadvantage of the prior art that it is quite difficult to connect pipelines in a narrow space, and to provide a pipeline sealing connection structure for a narrow space.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present invention specifically adopts the following technical scheme: a pipeline sealing connection structure for a narrow space, comprising two joints for being plugged into the interior of the pipeline, a check ring for connecting to the interior of the pipeline is arranged on the outer side of one end of the joint, a baffle abutting against the end of the pipeline is arranged on the side wall of the joint, the other ends of the two joints are abutted against each other through a connecting device, and a fastening device for stabilizing the abutment of the two joints is arranged on the outer side of the connecting device.

[0006] Furthermore, the end surface of the joint inserted into the pipe is provided with a slope for facilitating insertion.

[0007] Furthermore, the connecting device comprises a convex ring arranged at the abutment position of the two joints, the side surface of the convex ring is higher than the side surface of the joint, and the side surface of the convex ring is provided with a groove for installing a sealing ring.

[0008] Furthermore, a clamping sleeve is sleeved on the outer side surface of the convex ring.

[0009] Furthermore, the fastening device comprises a clamping shell arranged outside the clamping sleeve and the joint, and the clamping shell is provided with two parts which are buckled with each other.

[0010] Furthermore, a receiving cavity for receiving a clamping sleeve and a convex ring is provided in the middle of the clamping shell, and a retaining ring for locking the two clamping shells is provided on the side of the clamping shell.

[0011] The beneficial effects of the embodiments of the present invention are as follows: a groove is designed on the side of the convex ring for installing an O-ring or other types of sealing elements, ensuring that the side of the convex ring and the clamping sleeve can form an effective seal when the two joints are connected; the clamping sleeve is sleeved on the outer side of the convex ring, and provides a preliminary tightening effect by tightly wrapping the convex ring and a part of the joint, forming a sealing structure on the outer side of the convex ring, connecting the convex rings of the two joints, and ensuring the stability of the joints during the connection process; the clamping shell is divided into two parts that are interlocked and wrapped around the outside of the clamping sleeve and the joint, and the two clamping shell parts can be firmly fixed together by the locking retaining ring, thereby achieving the tightening of the entire connection structure, ensuring the stability and reliability of the connection structure in a small space, greatly reducing the occupied space, being suitable for use in a small space, and reducing the difficulty of installation, and being able to achieve efficient and reliable pipeline connection in a small space, which not only meets the integration requirements of the gas and liquid transportation system, but also greatly simplifies the installation and maintenance process, and improves the efficiency and reliability of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention in use state;

[0013] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0014] Figure 3 It is a structural schematic diagram of another angle of the present invention;

[0015] In the figure: 1, pipeline; 2, joint; 201, check ring; 202, baffle; 203, convex ring; 3, clamping sleeve; 4, clamping shell; 401, retaining ring. DETAILED DESCRIPTION

[0016] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0017] See also Figures 1 to 3 The embodiment of the present invention discloses a pipeline sealing connection structure for a narrow space, including a joint 2 arranged between two pipes 1, and a connecting device and a fastening device for enhancing the stability of the connection of the joint 2. Taking a hose as an example, since the space at the connection is small and the diameter of the pipe 1 is also small, the conventional connection structure cannot be applied, so a joint 2 with a cylindrical shape as a whole is adopted, and one end of the joint 2 can be inserted into the interior of the pipe 1. A check ring 201 is arranged on the outer wall of the inserted end. There are multiple check rings 201, and the edge of the check ring 201 is barbed, and the edge of the check ring 201 is arranged to have a small elasticity, which is used to abut against the inner wall of the pipe 1. After the check ring 201 is inserted into the interior of the pipe 1, it abuts against the interior of the pipe 1 under the action of pressure to prevent the end of the joint 2 from falling out of the interior of the pipe 1, thereby ensuring the stability of the connection at the insertion of the joint 2 and helping to maintain the stable operation of the system.

[0018] A baffle 202 is also provided at the tail of the check ring 201 on the side wall of the connector 2. When the connector 2 is fully inserted into the pipe 1, the baffle 202 is tightly abutted against the end of the pipe 1 to form a preliminary axial positioning, ensuring that the insertion length inside the pipe 1 is sufficient, ensuring the stable installation of the connector 2 in the pipe 1, preventing it from shifting during use, and enhancing the overall structural strength. In order to facilitate the smooth insertion of the connector 2 into the pipe 1, the end face of the insertion end is designed to be an inclined surface, which reduces the resistance during insertion, makes the installation process smoother, and improves the installation efficiency.

[0019] The connecting device includes a convex ring 203 arranged on the abutting surface of each joint 2. The side of the convex ring 203 is higher than the main part of the joint 2, forming a circle of protruding edges, which not only enhances the structural strength of the joint 2, but also provides reliable support for bearing and fixing the sealing ring. A groove is designed on the side of the convex ring 203 for installing an O-ring or other types of sealing elements, ensuring that the side of the convex ring 203 and the clamping sleeve can form an effective seal when the two joints 2 are connected to ensure the sealing performance. The fastening device includes a clamping sleeve 3 and a clamping shell 4. The clamping sleeve 3 is sleeved on the outer side of the convex ring 203. By tightly wrapping the convex ring 203 and a part of the joint 2, a preliminary fastening effect is provided, and a sealing structure is formed on the outer side of the convex ring 203 to connect the convex rings 203 of the two joints 2 to ensure the stability of the joints 2 during the connection process. When in use, the joints 2 are first inserted into the inside of the pipeline 1 respectively, and the clamping sleeve 3 is sleeved on the convex ring 203 of one joint 2, and then the convex rings 203 of the two joints 2 are abutted, and the sliding clamping sleeve 3 connects the two convex rings 203 to ensure the use effect.

[0020] The clamping shell 4 is divided into two parts that are interlocked and wrapped around the outside of the clamping sleeve 3 and the connector 2. A receiving cavity that fits the convex ring 203 is provided in the middle position of the clamping shell 4, which is used to accurately accommodate the clamping sleeve 3 and the convex ring 203, ensuring a compact and stable structure, which not only improves the strength of the entire connection structure, but also helps to simplify the installation process. A wire retaining ring 401 is provided on the side of the clamping shell 4 (the wire retaining ring 401 can be selected with reference to GB 895.2). By locking the retaining ring 401, the two clamping shell 4 parts can be firmly fixed together, thereby achieving the tightening of the entire connection structure, ensuring the stability and reliability of the connection structure in a small space. The two connectors 2 are connected and tightened from the outside using two separate semi-cylindrical clamping shells 4, which greatly reduces the occupied space, is suitable for use in a small space, and also reduces the difficulty of installation, and can achieve efficient and reliable pipeline connection in a small space, which not only meets the integration requirements of the gas and liquid transportation system, but also greatly simplifies the installation and maintenance process, and improves the efficiency and reliability of the overall system.

[0021] When in use, first, insert the two connectors 2 into the two ends of the pipe 1 to be connected, and ensure that the check ring 201 and the baffle 202 are correctly installed. Then, align the convex rings 203 of the two connectors 2, and install the sealing ring in the groove. Next, put the clamping sleeve 3 on the convex ring 203 and adjust the position preliminarily. Finally, buckle the two parts of the clamping housing 4 together, and complete the final tightening through the locking retaining ring 401.

[0022] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0025] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A pipeline sealing connection structure for a narrow space, characterized in that: The invention comprises two joints (2) for being inserted into the interior of a pipeline (1); a check ring (201) for connecting to the interior of the pipeline (1) is arranged on the outside of one end of the joint (2); a baffle (202) for abutting against the end of the pipeline (1) is arranged on the side wall of the joint (2); the other ends of the two joints (2) are abutted against each other via a connecting device; a fastening device for stabilizing the abutment of the two joints (2) is arranged on the outside of the connecting device.

2. The pipeline sealing connection structure for a narrow space according to claim 1, characterized in that: The end surface of the joint (2) inserted into the interior of the pipe (1) is provided with a slope for easy insertion.

3. The pipeline sealing connection structure for a narrow space according to claim 1, characterized in that: The connection device comprises a convex ring (203) arranged at the abutment position of two joints (2), the side surface of the convex ring (203) being higher than the side surface of the joint (2), and the side surface of the convex ring (203) being provided with a groove for installing a sealing ring.

4. The pipeline sealing connection structure for a narrow space according to claim 3, characterized in that: The outer side surface of the convex ring (203) is sleeved with a clamping sleeve (3).

5. The pipeline sealing connection structure for a narrow space according to claim 4, characterized in that: The fastening device comprises a clamping shell (4) arranged outside the clamping sleeve (3) and the joint (2), and the clamping shell (4) is provided with two parts which are buckled with each other.

6. The pipeline sealing connection structure for a narrow space according to claim 5, characterized in that: A receiving cavity for receiving the clamping sleeve (3) and the convex ring (203) is provided in the middle of the clamping shell (4), and a retaining ring (401) for locking the two clamping shells (4) is provided on the side of the clamping shell (4).

Images