Carbon steel compression joint type water swelling forming equal-diameter elbow pipe fitting

Abstract

The utility model discloses a carbon steel crimping type water swelling forming equal-diameter elbow pipe fitting, which relates to the technical field of pipeline equipment and comprises a pipe fitting main body and a fixing buckle, the fixing buckle is mounted on the pipe fitting main body, and a first crimping head and a second crimping head are respectively fixed at two ends of the pipe fitting main body. Grooves are formed in the inner wall of the first crimping head and the inner wall of the second crimping head, and O-shaped sealing rings are placed in the grooves. The fixing buckle comprises an upper ring and a lower ring, the two ends of the upper ring and the two ends of the lower ring are connected through bolts, so that the upper ring and the lower ring form a circular fixing ring, the lower ring is fixed to one end of the telescopic rod in a welded mode, and the other end of the telescopic rod is fixed to the base. The carbon steel compression joint type water swelling forming equal-diameter elbow pipe fitting with the structure solves the problems that the connection mode of the pipe fitting main body is not simple enough, the connection is not firm enough, the pipe fitting main body is inconvenient to assemble and easy to shift, and the production cost is high due to tedious processing procedures of the pipe fitting main body.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline equipment, in particular to a carbon steel press-fit type water expansion forming equal diameter elbow pipe fitting. Background Art

[0002] Carbon steel pipe is made by perforating steel ingots or solid round steel into a capillary tube, and then hot-rolling or cold-rolling. Carbon steel pipe plays an important role in my country's steel pipe industry. Carbon steel pipe is divided into two categories: hot-rolled and cold-rolled (drawn) steel pipe. Hot-rolled carbon steel pipe is divided into general steel pipe, low- and medium-pressure boiler steel pipe, high-pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, geological steel pipe, and other steel pipes. Carbon steel pipe is very common in life and has become a part of our daily life. When using carbon steel pipe, pipe connectors are used to connect pipes. The current pipe connectors can meet their basic usage requirements, but they still have some defects and shortcomings in actual use.

[0003] A carbon steel elbow pipe connection fitting manufactured by stamping in the prior art has the following disadvantages:

[0004] 1. The connection method of the elbow is not simple enough, which will waste manpower and time costs during assembly and is not easy to use on site. Secondly, the elbow processing is not simple enough and needs to be welded;

[0005] 2. The process of connecting elbows is complicated, with many internal components and many molding steps, which will waste labor costs, time costs and material costs during production, making it difficult to popularize the use of connecting elbows;

[0006] 3. The sealing of the connector is poor and the safety effect is poor. Utility Model Content

[0007] The purpose of the utility model is to provide a carbon steel press-fit water-expansion formed equal-diameter elbow pipe fitting, which solves the problems of the pipe fitting body's connection method being not simple enough, the connection being not strong enough, the inconvenience of assembly, the easy displacement and the high production cost caused by its complicated processing procedures.

[0008] To achieve the above-mentioned purpose, the utility model provides a carbon steel crimped water-expanded equal-diameter elbow pipe fitting, including a pipe fitting body and a fixing clip, the fixing clip being installed on the pipe fitting body, and a first crimping joint and a second crimping joint being fixed at both ends of the pipe fitting body, the inner walls of the first crimping joint and the second crimping joint being provided with grooves, and O-rings being placed in the grooves.

[0009] Preferably, the fixed buckle includes an upper ring and a lower ring. Both ends of the upper ring and the lower ring are connected by bolts, so that the upper ring and the lower ring form a circular fixed ring for fixing the main pipe fitting body. The lower ring is fixed to one end of the telescopic rod by welding, and the other end of the telescopic rod is fixed to the base.

[0010] Preferably, a position fixer is provided at one end of the telescopic rod close to the base.

[0011] Preferably, the base is fixed to the wall or the ground by expansion bolts.

[0012] Preferably, the first compression joint and the second compression joint have the same diameter.

[0013] Preferably, the cross sections of the first compression joint and the second compression joint are circular.

[0014] Preferably, the O-ring seal is in abutting connection with the inner wall of the groove.

[0015] Preferably, the first compression joint, the main pipe fitting body and the second compression joint are of an integral structure.

[0016] Therefore, the carbon steel press-fit hydroforming equal-diameter elbow pipe fitting of the present utility model with the above structure solves the problems of the inconvenient connection method of the main pipe fitting body, insufficient firm connection, inconvenient assembly, easy displacement, and high production cost caused by the cumbersome processing procedure.

[0017] The technical solution of the present utility model will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of a carbon steel press-fit hydroforming equal-diameter elbow pipe fitting of the present utility model;

[0019] Figure 2 is a side view of a carbon steel press-fit hydroforming equal-diameter elbow pipe fitting of the present utility model;

[0020] Figure 3 is a schematic structural view of the fixing device.

[0021] Among them, 1, O-ring seal; 2, groove; 3, first compression joint; 4, main pipe fitting body; 5, fixed buckle; 51, upper ring; 52, lower ring; 6, second compression joint; 7, telescopic rod; 8, position fixer; 9, base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solution of the present utility model will be further described below with reference to the drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings understood by those with ordinary skills in the field to which this utility model belongs. The "first", "second" and similar terms used in this utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" 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. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0024] Embodiment

[0025] As shown in the figure, a carbon steel press-fit hydroforming equal-diameter elbow pipe fitting includes a pipe fitting body 4 and a fixing buckle 5. The fixing buckle 5 is installed on the pipe fitting body 4. First press joints 3 and second press joints 6 are respectively fixed at both ends of the pipe fitting body 4. Grooves 2 are provided on the inner walls of the first press joint 3 and the second press joint 6, and O-ring seals 1 are placed in the grooves 2. The fixing buckle 5 includes an upper ring 51 and a lower ring 52. Both ends of the upper ring 51 and the lower ring 52 are connected by bolts, so that the upper ring 51 and the lower ring 52 form a circular fixing ring for fixing the pipe fitting body 4. The lower ring 52 is fixed at one end of a telescopic rod 7 by welding, and the other end of the telescopic rod 7 is fixed on a base 9. A position fixer 8 is provided at one end of the telescopic rod 7 close to the base 9. The base 9 is fixed to the wall or the ground by expansion bolts. The first press joint 3 and the second press joint 6 are of equal diameter. The cross-sections of the first press joint 3 and the second press joint 6 are circular. The O-ring seal 1 is in abutting connection with the inner wall of the groove 2. The first press joint 3, the pipe fitting body 4 and the second press joint 6 are of an integral structure.

[0026] Working principle: This device is bent by a pipe bender. After being bent by the pipe bender, the pipe fitting body 4 forms a bent shape. A first press joint 3 is provided at one end of the pipe fitting body 4, and a second press joint 6 is provided at the other end. The outer side walls of the ends of the first press joint 3 and the second press joint 6 are hydroformed. The connection method between the pipe fitting and the pipeline is press connection. During use, it is connected to an external pipeline through the first press joint 3 and the second press joint 6. By using a special pipe fitting hydraulic pliers (there are two types: electric and manual), one straight section of the O-ring seal 1 is pressed into a hexagon to prevent leakage due to rotation during use.

[0027] Grooves 2 are provided on the inner walls of the ends of the first compression joint 3 and the second compression joint 6, and an O-ring seal 1 is placed in the groove 2. The O-ring seal 1 is made of rubber material. When in use, the O-ring seal 1 is connected to the external pipeline, achieving a sealing effect and enhancing the safety of the connection between the device and the external pipeline. After the first compression joint 3 and the second compression joint 6 are both connected to the external pipeline, the upper ring 51 and the lower ring 52 are installed on the pipe fitting main body 4 through bolts. Then, the length of the telescopic rod 7 is adjusted. After adjusting to the appropriate position, the position fixer 8 is rotated and fixed. Subsequently, the base 9 is fixed to the wall or the ground through expansion bolts, playing a role in supporting the weight and fixing the position, making the connection more firm.

[0028] Therefore, the present utility model adopts a carbon steel press-connection type hydroforming equal-diameter elbow pipe fitting with the above structure, solving the problems of the inconvenient connection method of the pipe fitting main body, insufficient firmness of the connection, inconvenience in assembly, easy displacement, and high production cost caused by its cumbersome processing procedures. Moreover, it can effectively prevent the corrosion of the transverse cut surface at the end of the metal pipeline.

[0029] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model 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 utility model, 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 utility model.

Claims

1. A carbon steel press-fit hydroformed equal-diameter elbow pipe fitting, characterized in that: It includes a pipe fitting body and a fixing buckle. The fixing buckle is installed on the pipe fitting body. First and second compression joints are respectively fixed at both ends of the pipe fitting body. Grooves are provided on the inner walls of the first and second compression joints, and an O-ring is placed in the groove.

2. A carbon steel press-fit hydroforming equal-diameter elbow pipe fitting according to claim 1, characterized in that: The fixing buckle includes an upper ring and a lower ring. Both ends of the upper ring and the lower ring are connected by bolts, so that the upper ring and the lower ring form a circular fixing ring for fixing the pipe fitting body. The lower ring is fixed at one end of the telescopic rod by welding, and the other end of the telescopic rod is fixed on the base.

3. A carbon steel press-fit hydroforming equal-diameter elbow pipe fitting according to claim 2, characterized in that: A position fixer is provided at one end of the telescopic rod close to the base.

4. The equal-diameter elbow pipe fitting formed by hydroforming with carbon steel by press fitting according to claim 3, wherein: The base is fixed to the wall or the ground by expansion bolts.

5. A carbon steel press-fit hydroforming equal-diameter elbow pipe fitting according to claim 1, characterized in that: The first compression joint and the second compression joint have the same diameter.

6. A carbon steel press-fit hydroforming equal-diameter elbow pipe fitting according to claim 5, characterized in that: The cross-sections of the first compression joint and the second compression joint are circular.

7. A carbon steel press-fit hydroforming equal-diameter elbow pipe fitting according to claim 1, characterized in that: The O-ring is in abutting connection with the inner wall of the groove.

8. A carbon steel press-fit hydroforming equal-diameter elbow pipe fitting according to claim 1, characterized in that: The first compression joint, the pipe fitting body and the second compression joint are of an integral structure.

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