Non-welding plane connecting pipe joint convenient to disassemble and assemble

Abstract

The utility model discloses a non-welding plane connecting pipe joint convenient to disassemble and assemble, which comprises a joint main body, a conversion pup joint, a plane sealing nut, a taper pipe joint, a forming nut and a sealing positioning ring, and the left end of the conversion pup joint and the right end of the joint main body form a plane connecting part; a convex shoulder is formed at the right end of the conversion pup joint; the plane sealing nut is arranged on the plane connecting part in a sleeving manner; the left end of the taper pipe joint is sleeved on the right end part of the conversion pup joint; the left end of the forming nut is sleeved on the convex shoulder of the conversion pup joint, and the right end of the forming nut is in threaded connection with the left end part of the taper pipe joint; a sealing cavity is formed in the forming nut; and the sealing positioning ring is arranged in the sealing cavity. According to the utility model, through a non-welding pipeline connection mode, the defects of welding connection, such as high requirements on constructors, high difficulty in internal cleaning and existence of welding stress, are avoided, the possibility of damage to parts is reduced, the service life of the pipe joint is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to a metal pipe connector, specifically a non-welded flat pipe connector that is easy to assemble and disassemble. Background Technology

[0002] In piping systems, pipe fittings are crucial components for connecting pipes. Currently, common planar connection pipe fittings, such as those conforming to marine standards CB822, CB316, and CB / T4328, mostly use a welded short pipe secured with a nut. This connection method presents numerous problems in practical use. Firstly, the welding process is complex and demanding; connecting pipes made of special materials requires specialized welding equipment and auxiliary materials. Furthermore, welding operations are inefficient, energy-intensive, polluting, and pose numerous safety hazards, potentially harming human health. These issues make it unsuitable for the demands of modern society, especially given the growing international emphasis on human health and safety, environmental protection, and energy conservation.

[0003] To address this, the industry has attempted to use non-welded pipe fittings. However, existing non-welded pipe fittings cannot use a planar connection structure; instead, they employ an insert connection structure. This insert connection structure requires a large operating space during installation, thus posing installation difficulties when the piping installation space on board is compact and the piping is densely arranged. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a non-welded flat connection pipe joint that is easy to assemble and disassemble, which can quickly and conveniently realize the installation or disassembly of pipelines in a confined space.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model for a convenient, non-welded planar connecting pipe joint is as follows:

[0006] The device includes a connector body 1, a conversion short connector 3, a flat sealing nut 4, a tapered tube connector 7, a molded nut 5, and a sealing positioning ring 6. The right end face of the connector body 1 is a flat sealing surface 12; the right end is provided with an external thread; the left end face of the conversion short connector 3 is a flat sealing surface; the left end of the conversion short connector 3 is opposite to the right end of the connector body 1; the left end of the conversion short connector 3 and the right end of the connector body 1 form a flat connecting part; the right end of the conversion short connector 3 forms a shoulder 33; the flat sealing nut 4 is sleeved on the flat connecting part; the left end of the tapered tube connector 7 is sleeved on the right end of the conversion short connector 3; the left end of the molded nut 5 is sleeved on the shoulder 33 of the conversion short connector 3, and its right end is threaded to the left end of the tapered tube connector 7; a sealing cavity is formed inside the molded nut 5; the sealing positioning ring 6 is disposed inside the sealing cavity.

[0007] In another embodiment, a tapered hole sealing surface is formed at the left end of the tapered tube joint 7; the rubber seal 62 of the sealing positioning ring 6 fills the tapered hole sealing surface at the left end of the tapered tube joint 7.

[0008] In another embodiment, the left end through hole of the molded nut 5 matches the right end outer circle of the conversion short connector 3, and the right end internal thread hole of the molded nut 5 matches the left end external thread of the tapered pipe connector 7; the molded nut 5 has an inner limiting slope that matches the shoulder 33.

[0009] In another embodiment, the inner limiting slope of the molded nut 5 abuts against the left side of the shoulder 33; the sealing positioning ring 6 is provided between the right side of the shoulder 33 and the left end face of the tapered tube joint 7.

[0010] In another embodiment, the inner hole 42 of the planar sealing nut 4 matches the outer circle of the convex disk 31 at the left end of the conversion short connector 3; the left end of the planar sealing nut 4 forms an internal thread hole 41 that matches the external thread of the connector body 1; the right end of the planar sealing nut 4 forms a through hole 43 that matches the outer circle of the conversion short connector 3, and the inner hole of the planar sealing nut 4 forms a limiting step surface 44.

[0011] In another embodiment, a sealing groove is provided on the right end face of the connector body 1 and / or the left end face of the conversion short circuit 3; a sealing ring 2 is placed in the sealing groove.

[0012] In another embodiment, a tapered sealing surface is formed at the left end of the connector body 1.

[0013] In another embodiment, a tapered hole sealing surface is formed at the right end of the tapered tube connector 7.

[0014] In another embodiment, the conical sealing surface is a 24° conical sealing surface.

[0015] In another embodiment, the left end of the connector body 1 is connected to the first steel pipe, and the right end of the tapered pipe connector 7 is connected to the second steel pipe, thereby achieving a fixed connection between the first steel pipe and the second steel pipe.

[0016] The technical effects that this utility model can achieve are:

[0017] This invention avoids the disadvantages of welded connections by using a non-welded pipe connection method, such as high requirements for construction personnel, difficulty in internal cleaning, and the presence of welding stress. This reduces the possibility of component damage, extends the service life of pipe joints, and lowers maintenance costs.

[0018] This invention allows for quick disassembly of pipe fittings by loosening the flat sealing nut and the molded nut, greatly improving disassembly efficiency and making it particularly suitable for installation environments with limited space.

[0019] This invention utilizes an elastic sealing structure formed by a sealing positioning ring and a threaded connection structure to effectively prevent leakage caused by vibration impact on the joint, thus ensuring the reliability of the pipe joint connection.

[0020] This invention ensures the sealing of pipe connections and reduces the risk of leakage by using sealing rings and sealing positioning rings.

[0021] This invention enables easy-to-disassemble planar connections using a non-welded structure, allowing for quick and convenient installation or disassembly while ensuring a reliable seal.

[0022] The installation and disassembly of this utility model require little operating space, making it suitable for applications where pipe installation space is limited and pipe arrangement is dense on ships.

[0023] This utility model features convenient operation, high reliability, meeting the requirements for ultra-high pressure pipeline connection, and wide applicability. Attached Figure Description

[0024] Those skilled in the art will understand that the following description is merely illustrative of the principles of this invention, and these principles can be applied in various ways to achieve many different alternative implementations. These descriptions are only intended to illustrate the general principles of the teachings of this invention and are not intended to limit the inventive concept disclosed herein.

[0025] Embodiments of the present invention are illustrated in conjunction with the accompanying drawings, which are incorporated in and form part of this specification, and together with the foregoing general description and the following detailed description of the drawings, serve to explain the principles of the present invention.

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] Figure 1 This is a cross-sectional schematic diagram of the non-welded planar connecting pipe joint of this utility model that is easy to assemble and disassemble;

[0028] Figure 2 This is an exploded view of the present invention;

[0029] Figure 3 This is an assembly diagram of the present invention;

[0030] Figure 4 This is a schematic diagram of the connector body of this utility model;

[0031] Figure 5This is a schematic diagram of the planar sealing nut of this utility model;

[0032] Figure 6 This is a partially enlarged schematic diagram of the left end of this utility model;

[0033] Figure 7 This is a partially enlarged schematic diagram of the right end of this utility model;

[0034] Figure 8 This is a schematic diagram of the sealing positioning ring of this utility model.

[0035] Explanation of the reference numerals in the figure:

[0036] 1 is the connector body, 2 is the sealing ring.

[0037] 3 is a conversion short circuit, 4 is a flat sealing nut.

[0038] 5 is a molded nut, and 6 is a sealing and positioning ring.

[0039] 7 is a tapered pipe connector.

[0040] 11 is the conical sealing surface, and 12 is the flat sealing surface.

[0041] 31 is a convex disk, and 32 is the outer circle of the conversion shorting.

[0042] 33 is a convex shoulder.

[0043] 41 is an internal threaded hole, and 42 is an internal hole.

[0044] 43 is a through hole, and 44 is a stepped surface.

[0045] 61 is a metal frame, and 62 is a rubber seal. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains. The terms "first," "second," and similar words used herein do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Words such as "comprising" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] like Figures 1 to 3 As shown, the non-welded flat connection pipe joint of this utility model, which is easy to assemble and disassemble, includes a joint body 1, a conversion short connector 3 and a tapered pipe joint 7. The right end of the joint body 1 is connected to the left end of the conversion short connector 3, and the right end of the conversion short connector 3 is connected to the tapered pipe joint 7.

[0048] The left end of the connector body 1 is used to connect the first steel pipe, and the right end of the tapered pipe connector 7 is used to connect the second steel pipe, thereby enabling a fixed connection between the first steel pipe and the second steel pipe.

[0049] like Figure 4 As shown, a conical sealing surface 11 is formed at the left end of the connector body 1; the conical sealing surface 11 can adopt the 24° conical sealing connection form in the international standard ISO 8434-1;

[0050] The right end of the connector body 1 is a planar connection part, and an external thread is formed at this end of the connector body 1; a planar sealing surface 12 is formed on the right end face of the connector body 1; an annular groove is provided on the planar sealing surface 12 for placing the sealing ring 2; a sealing ring 2 is provided between the sealing end face of the connector body 1 and the sealing end face of the conversion short connector 3 to prevent the medium in the pipe from leaking from the sealing surface between the connector body 1 and the conversion short connector 3.

[0051] The right end of the connector body 1 and the left end of the conversion short circuit 3 form a planar connection, and a planar sealing nut 4 is fixedly sleeved on the right end of the connector body 1 and the left end of the conversion short circuit 3.

[0052] The left end of the conversion short circuit 3 forms a convex disk 31, and the left end face of the convex disk 31 is a sealing surface; such as Figure 5 As shown, the inner hole 42 of the flat sealing nut 4 matches the outer circle of the convex disc 31 of the conversion short connector 3; the left end of the flat sealing nut 4 has an internal thread hole 41 that matches the external thread of the connector body 1, and the right end of the flat sealing nut 4 has a through hole 43 that matches the outer circle of the conversion short connector 3, thereby forming a limiting step surface 44 in the inner hole of the flat sealing nut 4.

[0053] like Figure 6 As shown, during installation, the through hole 43 of the flat sealing nut 4 is fitted onto the outer circle 32 of the conversion short connector 3, and the limiting step surface 44 of the flat sealing nut 4 abuts against the right end face of the convex disc of the conversion short connector 3; then the external thread of the connector body 1 is connected to the internal thread hole of the flat sealing nut 4, and the left end face of the conversion short connector 3 is pushed to fit tightly against the right end of the connector body 1 by thread locking, so as to achieve a quick sealing connection between the connector body 1 and the conversion short connector 3.

[0054] During disassembly, loosen the threaded connection between the flat sealing nut 4 and the connector body 1 by unscrewing in the reverse direction, and move the flat sealing nut 4 to the right to achieve quick disassembly of the connector body 1 and the conversion short circuit 3.

[0055] The left end of the tapered tube connector 7 is fitted onto the right end of the conversion short connector 3; the left end of the tapered tube connector 7 is fixedly connected to the right end of the conversion short connector 3 by the forming nut 5.

[0056] Specifically, such as Figure 7 As shown, the right end of the conversion short connector 3 is formed by extrusion plastic molding to form a shoulder 33; the left end through hole of the forming nut 5 matches the right end outer circle of the conversion short connector 3, and the right end threaded hole of the forming nut 5 matches the left end external thread of the tapered pipe connector 7; a bevel is formed inside the forming nut 5 to match the shoulder 33.

[0057] The forming nut 5 is fitted onto the shoulder 33 of the conversion short connector 3; the inner inclined surface of the forming nut 5 abuts against the left side of the shoulder 33; a sealing space is formed between the right side of the shoulder 33 and the left end face of the tapered pipe joint 7, and the sealing space contains the sealing positioning ring 6; the sealing between the conversion short connector 3 and the tapered pipe joint 7 is achieved through the sealing positioning ring 6.

[0058] The right end of the shaped nut 5 is connected to the left end of the tapered pipe joint 7 by a thread, thereby realizing the fixed connection between the conversion shorting 3 and the tapered pipe joint 7.

[0059] The tapered pipe joint 7 has tapered hole sealing surfaces at both ends; these tapered hole sealing surfaces can adopt the 24° tapered surface sealing connection form in the international standard ISO8434-1.

[0060] like Figure 8 As shown, the sealing positioning ring 6 includes a metal skeleton 61, and the outside of the metal skeleton 61 is wrapped with a rubber seal 62.

[0061] During installation, the molded nut 5 fitted onto the conversion short connector 3 is moved to the right, so that the inner limiting inclined surface of the molded nut 5 abuts against the shoulder 33 of the conversion short connector 3. Then, the internal threaded hole of the molded nut 5 is connected to the external thread of the tapered pipe connector 7. The shoulder 33 of the conversion short connector 3 is pushed to the right by the thread locking, so that the rubber sealing element 62 of the sealing positioning ring 6 fills the sealing surface of the left end tapered hole of the tapered pipe connector 7, thereby achieving a seal between the conversion short connector 3 and the tapered pipe connector 7, and achieving a quick sealing connection between the conversion short connector 3 and the tapered pipe connector 7.

[0062] During disassembly, loosen the threaded connection between the forming nut 5 and the tapered pipe connector 7 by unscrewing in the opposite direction and moving the forming nut 5 to the left, thereby achieving quick disassembly of the conversion short connector 3 and the tapered pipe connector 7.

[0063] This invention enables planar connections without welding and allows for quick and easy disassembly.

[0064] To ensure structural compatibility between the molded nut 5 and the adapter short connector 3, during manufacturing, the flat sealing nut 4 is first fitted onto the left end of the adapter short connector 3, then the molded nut 5 with the inner limiting slope is fitted onto the right end of the adapter short connector 3, and then the shoulder 33 is shaped.

[0065] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A non-welded flat-face pipe fitting that is easy to assemble and disassemble, characterized in that, include: The connector body has a flat sealing surface on its right end face; the right end is provided with an external thread. The conversion short connector has a flat sealing surface on its left end face; the left end of the conversion short connector is opposite to the right end of the connector body; the left end of the conversion short connector and the right end of the connector body form a flat connection part; the right end of the conversion short connector has a shoulder. A flat sealing nut is fitted onto the flat connecting portion; A tapered tube connector, the left end of which is fitted onto the right end of the conversion short connector; A molded nut, the left end of which is fitted onto the shoulder of the conversion short connector, and the right end of which is threadedly connected to the left end of the tapered tube connector; a sealing cavity is formed inside the molded nut; and A sealing positioning ring is disposed within the sealing cavity.

2. The non-welded planar connecting pipe joint for easy assembly and disassembly according to claim 1, characterized in that, The left end of the tapered tube joint has a tapered hole sealing surface; the rubber seal of the sealing positioning ring fills the tapered hole sealing surface at the left end of the tapered tube joint.

3. The non-welded flat-plane connecting pipe joint for easy assembly and disassembly according to claim 1, characterized in that, The left end through hole of the molded nut matches the right end outer circle of the conversion short connector, and the right end internal thread hole of the molded nut matches the left end external thread of the tapered pipe connector; the molded nut has an inner limiting slope that matches the shoulder.

4. The non-welded flat-plane connecting pipe joint for easy assembly and disassembly according to claim 3, characterized in that, The inner limiting slope of the shaped nut abuts against the left side of the shoulder; the sealing positioning ring is provided between the right side of the shoulder and the left end face of the tapered tube joint.

5. The non-welded flat-plane connecting pipe joint for easy assembly and disassembly according to claim 1, characterized in that, The inner hole of the planar sealing nut matches the outer circle of the convex disk at the left end of the conversion short connector; the left end of the planar sealing nut has an internal thread hole that matches the external thread of the connector body; the right end of the planar sealing nut has a through hole that matches the outer circle of the conversion short connector; and the inner hole of the planar sealing nut forms a limiting step surface.

6. The non-welded planar connecting pipe joint for easy assembly and disassembly according to claim 1, characterized in that, A sealing groove is provided on the right end face of the connector body and / or the left end face of the conversion short connector; a sealing ring is placed in the sealing groove.

7. The non-welded flat-plane connecting pipe joint for easy assembly and disassembly according to claim 1, characterized in that, A tapered sealing surface is formed at the left end of the connector body.

8. The non-welded flat-plane connecting pipe joint for easy assembly and disassembly according to claim 1, characterized in that, The right end of the tapered tube connector has a tapered hole sealing surface.

9. The non-welded planar connecting pipe joint for easy assembly and disassembly according to claim 2, 7, or 8, characterized in that, The conical hole sealing surface is a 24° conical sealing surface.

10. The non-welded planar connecting pipe joint for easy assembly and disassembly according to claim 1, characterized in that, The left end of the connector body is connected to the first steel pipe, and the right end of the tapered pipe connector is connected to the second steel pipe, thereby achieving a fixed connection between the first steel pipe and the second steel pipe.

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