Carbon steel compression joint type water swelling forming four-way pipe fitting

Abstract

The utility model discloses a carbon steel crimping type water expansion forming four-way pipe fitting, which relates to the technical field of pipeline equipment and comprises a pipe fitting main body and a fixing device, a first crimping head and a second crimping head are fixed at the left end and the right end of the pipe fitting main body, and a third crimping head and a fourth crimping head are arranged at the upper end and the lower end of the pipe fitting main body. The end portions of the outer side walls of the first crimping head, the second crimping head, the third crimping head and the fourth crimping head are all provided with protruding structures, sealing ring placing grooves are formed in the inner walls of the protruding structures, O-shaped sealing rings are arranged in the sealing ring placing grooves, and the fixing devices are arranged on the first crimping head and the second crimping head. By means of clamping and pressing connection and the fixing device, connection between the pipe fitting and the sectional material is more reliable, construction is easy, convenient and rapid, connection quality is more stable, and construction cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline equipment, in particular to a carbon steel press-fit hydroformed four-way pipe fitting. Background Art

[0002] Four-way pipe fittings are pipeline connectors used at the confluence of four identical or different pipelines. Their main function is to change the direction of fluid. They can be classified into straight four-ways, oblique four-ways, and reducing four-ways according to type. Four-way pipe fittings are made of carbon steel, cast steel, alloy steel, stainless steel and other materials according to their materials. The commonly used processing methods are hydroforming and hot pressing. As connectors, the connection methods between four-way pipe fittings and steel are generally welding connection or threaded connection, etc. However, traditional connection methods have many disadvantages:

[0003] (1) Welding connection: During the construction of welding connection, heavy tools and numerous auxiliary materials are required. Open-flame welding is carried out during installation, which has many potential safety hazards. Painting needs to be repeated many times during installation and later maintenance, which requires high skills of workers, unstable quality, long process time, and high cost.

[0004] (2) Threaded connection: During the construction of threaded connection, heavy tools and numerous auxiliary materials are required. A heavy and complicated threading process is needed, and it requires professional technicians with long working experience to operate. Painting also needs to be repeated many times later, and the process time is long.

[0005] In addition, at present, after the pipes and pipe fittings are installed, the pipes and pipe fittings are placed naturally in the air. When moving objects or accidentally touching the pipes or pipe fittings, the relative positions of the pipes and pipe fittings will change due to external force collision, and there is a hidden danger of fluid leakage. Therefore, it is necessary to improve the existing technology to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the defects and deficiencies existing in four-way pipe fittings in the existing market, and provide a carbon steel press-fit hydroformed four-way pipe fitting, which uses a crimping connection method and a fixing device to fix the pipe fitting, making the connection between the pipe fitting and the profile more tight and reliable, the construction simple and fast, and the construction cost low.

[0007] To achieve the above purpose, the utility model provides a carbon steel press-fit hydroformed four-way pipe fitting, which includes a pipe fitting main body and a fixing device. The left and right ends of the pipe fitting main body are fixed with a first press joint and a second press joint. The upper and lower ends of the pipe fitting main body are provided with a third press joint and a fourth press joint. The outer side wall ends of the first press joint, the second press joint, the third press joint and the fourth press joint are all provided with convex structures. The inner wall of the convex structure is provided with a sealing ring placement groove, and an O-ring is arranged inside the sealing ring placement groove. The fixing device is arranged on the first press joint and the second press joint.

[0008] Preferably, the first crimping joint, the second crimping joint and the pipe fitting body are of an integral structure. A first weld seam is provided between the third crimping joint and the pipe fitting body, and a second weld seam is provided between the fourth crimping joint and the pipe fitting body. Both the third crimping joint and the fourth crimping joint are fixed to the pipe fitting body by welding.

[0009] Preferably, the number of the fixing devices is set to 2.

[0010] Preferably, the fixing device includes a mounting base, a front ring and a rear ring. Connecting rods are provided at both ends of the rear ring, and first connection holes are provided at both ends of the rear ring. The front ring and the rear ring are fixedly connected through the connecting rods passing through the first connection holes and being fixed with first nuts. The mounting base and the connecting rods are fixedly connected with second nuts, and the mounting base is fixed to the wall surface by fastening bolts.

[0011] Preferably, the connecting rod and the rear ring are of an integral structure, and the connecting rod is provided with an external thread.

[0012] Preferably, second connection holes are provided at the middle position of the mounting base, and mounting holes are provided at both ends of the mounting base. The number of both the second connection holes and the mounting holes is set to 2.

[0013] Preferably, the first crimping joint and the second crimping joint are symmetric to each other with the pipe fitting body as the central axis, and the third crimping joint and the fourth crimping joint are symmetric to each other with the pipe fitting body as the central axis.

[0014] Preferably, the O-ring is made of ethylene propylene diene monomer rubber.

[0015] Therefore, the present utility model provides a carbon steel press-connecting hydroforming four-way pipe fitting, and the present utility model has the following beneficial effects:

[0016] In the present utility model, by arranging the first crimping joint and the second crimping joint to be integrally formed with the pipe fitting body, and the third crimping joint and the fourth crimping joint are fixed to the pipe fitting body by welding, the processing and manufacturing cost is low. The outer side wall ends of the first crimping joint, the second crimping joint, the third crimping joint and the fourth crimping joint are all provided with convex structures. The convex structures adopt a hydroforming processing method. An O-ring is provided on the inner wall of the convex structure to play a sealing role. By adopting a press-connecting method, the connection between the pipe fitting and the profile is made more tightly and reliably, the construction is simple and fast, and the construction cost is low. The press-connecting is the extrusion between metals, which is environmentally friendly and pollution-free. At the same time, the pipe fitting is fixed by a fixing device, which can avoid the problem that the relative position of the pipe or the pipe fitting changes due to external force collision, resulting in leakage.

[0017] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0018] Figure 1 It is the front view of a carbon steel press - fitting hydroforming four - way pipe fitting of the present utility model;

[0019] Figure 2 It is the structural schematic diagram of a carbon steel press - fitting hydroforming four - way pipe fitting of the present utility model;

[0020] Figure 3 It is the structural schematic diagram of the fixing device of a carbon steel press - fitting hydroforming four - way pipe fitting of the present utility model;

[0021] Figure 4 It is the left view of a carbon steel press - fitting hydroforming four - way pipe fitting of the present utility model;

[0022] Figure 5 It is the top view of a carbon steel press - fitting hydroforming four - way pipe fitting of the present utility model;

[0023] Reference Signs

[0024] 1, pipe fitting main body; 2, first press - joint; 3, second press - joint; 4, third press - joint; 5, fourth press - joint; 6, fixing device; 601, installation base; 602, front ring; 603, rear ring; 7, connecting rod; 8, convex structure; 9, sealing ring placement groove; 10, O - ring; 11, first weld seam; 12, second weld seam; 13, first connection hole; <14, first nut; 15, second nut; 16, installation hole; 17, second connection hole; 18, fastening bolt. Detailed Embodiments

[0025] The technical solution of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0026] Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meaning understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left", "right" are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0027] Embodiment

[0028] As Figures 1-5 shown, a carbon steel press-fitting hydroforming four-way pipe fitting of the present utility model includes a pipe fitting main body 1 and a fixing device 6. First press joints 2 and second press joints 3 are fixed at the left and right ends of the pipe fitting main body 1. Third press joints 4 and fourth press joints 5 are provided at the upper and lower ends of the pipe fitting main body 1. The outer wall ends of the first press joints 2, the second press joints 3, the third press joints 4, and the fourth press joints 5 are all provided with convex structures 8. The inner wall of the convex structure 8 is provided with an O-ring placement groove 9. An O-ring 10 is arranged inside the O-ring placement groove 9. The fixing device 6 is arranged on the first press joints 2 and the second press joints 3.

[0029] The first press joints 2, the second press joints 3, and the pipe fitting main body 1 are of an integral structure. A first weld seam 11 is arranged between the third press joints 4 and the pipe fitting main body 1. A second weld seam 12 is arranged between the fourth press joints 5 and the pipe fitting main body 1. The third press joints 4 and the fourth press joints 5 are both fixed to the pipe fitting main body 1 by welding.

[0030] The number of the fixing devices 6 is set to 2.

[0031] The fixing device 6 includes an installation base 601, a front ring 602, and a rear ring 603. Connecting rods 7 are arranged at both ends of the rear ring 603. First connection holes 13 are arranged at both ends of the rear ring 603. The front ring 602 and the rear ring 603 are fixedly connected by passing the connecting rods 7 through the first connection holes 13 and using first nuts 14. The installation base 601 and the connecting rods 7 are fixedly connected by second nuts 15. And the installation base 601 is fixed to the wall surface by fastening bolts 18.

[0032] The connecting rods 7 and the rear ring 603 are of an integral structure, and the connecting rods 7 are provided with external threads.

[0033] Second connection holes 17 are arranged at the middle positions of the installation bases 601. Installation holes 16 are arranged at both ends of the installation bases 601. The numbers of the second connection holes 17 and the installation holes 16 are both set to 2.

[0034] The first press joints 2 and the second press joints 3 are symmetric with each other about the central axis of the pipe fitting main body 1. The third press joints 4 and the fourth press joints 5 are symmetric with each other about the central axis of the pipe fitting main body 1.

[0035] The material of the O-ring 10 is ethylene propylene diene monomer rubber.

[0036] The working principle of a carbon steel press-fitting hydroforming four-way pipe fitting of the present utility model:

[0037] Insert the upper and lower ends and the left and right ends of the fitting body 1 into the pipe respectively, and then use a special crimping tool to crimp and connect the fitting body 1 and the pipe. The cross-section of the extrusion position is hexagonal to achieve anti-rotation. The crimping part deforms, being smaller in the middle and larger at both ends to achieve anti-pull-out. At the same time, the convex structure 8 will deform, and the O-ring 10 inside it will squeeze the pipe, enhancing the sealing performance of the connection between the fitting and the pipe. Use the fixing device 6 to fix the fitting. Place the front ring 602 and the rear ring 603 on the first pressing joint 2 and the second pressing joint 3. Then pass the front ring 602 and the rear ring 603 through the connecting rod 7 and through the first connection hole 13, and fix them with the first nut 14. The mounting base 601 and the connecting rod 7 pass through the second connection hole 17 and are fixedly connected by the second nut 15. By adjusting the second nut 15, the length of the fixing device can be adjusted. Finally, fix the mounting base 601 on the corresponding wall surface through the fastening bolt 18 to complete the fixing of the fitting, which can avoid the problem of leakage caused by the relative position change between the pipe and the fitting due to the fitting being collided by external force.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A carbon steel press-fit hydroforming four-way pipe fitting, characterized in that: It includes a pipe fitting body and a fixing device. First and second compression joints are fixed to the left and right ends of the pipe fitting body respectively. Third and fourth compression joints are arranged at the upper and lower ends of the pipe fitting body. The outer wall ends of the first compression joint, the second compression joint, the third compression joint and the fourth compression joint are all provided with convex structures. The inner wall of the convex structure is provided with a sealing ring placement groove, and an O-ring is arranged inside the sealing ring placement groove. The fixing device is arranged on the first compression joint and the second compression joint.

2. The carbon steel press-fit hydroforming four-way pipe fitting according to claim 1, characterized in that: The first compression joint, the second compression joint and the pipe fitting body are of an integral structure. A first weld seam is arranged between the third compression joint and the pipe fitting body, and a second weld seam is arranged between the fourth compression joint and the pipe fitting body. The third compression joint and the fourth compression joint are both fixed to the pipe fitting body by welding.

3. A carbon steel press-fit hydroforming four-way pipe fitting according to claim 1, characterized in that: The number of the fixing devices is set to 2.

4. A carbon steel press-fit hydroforming four-way pipe fitting according to claim 3, characterized in that: The fixing device includes a mounting base, a front ring and a rear ring. A connecting rod is arranged at each end of the rear ring. A first connection hole is arranged at each end of the rear ring. The front ring and the rear ring are fixedly connected by passing the connecting rod through the first connection hole and using a first nut. The mounting base and the connecting rod are fixedly connected by a second nut, and the mounting base is fixed to the wall by a fastening bolt.

5. A carbon steel press-fitting hydroforming four-way pipe fitting according to claim 4, characterized in that: The connecting rod and the rear ring are of an integral structure, and an external thread is arranged on the connecting rod.

6. The carbon steel press-fit hydroforming four-way pipe fitting according to claim 5, wherein: A second connection hole is arranged at the middle position of the mounting base, and mounting holes are arranged at both ends of the mounting base. The number of the second connection holes and the mounting holes is both set to 2.

7. A carbon steel press-fit hydroformed four-way pipe fitting according to claim 1, characterized in that: The first compression joint and the second compression joint are symmetric to each other with the pipe fitting body as the central axis, and the third compression joint and the fourth compression joint are symmetric to each other with the pipe fitting body as the central axis.

8. A carbon steel press-fit hydroforming four-way pipe fitting according to claim 1, characterized in that: The material of the O-ring is ethylene propylene diene monomer rubber.

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