Sizing wafer type welding-free flange pipeline connecting structure

Abstract

The utility model discloses a sizing butt-clamping type welding-free flange pipeline connecting structure which comprises pipe fittings to be connected, the pipe fittings to be connected are of two split structures, a first flange unit and a second flange unit are arranged on the junction surfaces of the pipe fittings to be connected respectively, and the first flange unit and the second flange unit are connected through a pipeline. The first flange unit and the second flange unit are the same or different in structure and are installed oppositely, the first flange unit comprises a concave spigot end flange and a convex spigot end flange, and the two ends of the concave spigot end flange and the two ends of the convex spigot end flange are installed on a pipe fitting to be connected in a clamped mode through butt clamp bolts. The first flange unit and the second flange unit are respectively connected with a pipe fitting to be connected, the first flange unit and the second flange unit are connected through a plurality of axial connecting bolts, and a sealing gasket is arranged between the joint surfaces of the first flange unit and the second flange unit. The technical problems that in the prior art, a pipeline and a flange need to be connected through welding, operation is complex, and the requirement for operators is high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connection, and in particular relates to a fixed-diameter clamp-type weld-free flange pipeline connection structure. Background Art

[0002] Outdoor construction often involves pipe reconfiguration and connection operations. However, in some scenarios, welding equipment cannot be used due to lack of power for welding pipes. Alternatively, welding operations cannot meet the required safety standards for special media, underwater welding, or in dust-prone, explosive environments. In these cases, welding equipment is often unavailable or simply prohibited in the environment. Furthermore, operators who lack the required welding quality also hinder pipeline construction. Therefore, developing a welding-free flange pipe connection structure has been a persistent challenge for those skilled in the art. Utility Model Content

[0003] The purpose of the utility model is to provide a sizing clamp-type weld-free flange pipe connection structure to solve the technical problems in the above-mentioned prior art that the connection between the pipe and the flange requires welding, which leads to operational difficulties or huge safety hazards and has high requirements for operators.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A fixed-size clamp-type weld-free flange pipeline connection structure includes: a pipe fitting to be connected, the pipe fitting to be connected is two split structures, and a first flange unit and a second flange unit are respectively provided at the joint surfaces of the pipe fitting to be connected. The structures of the first flange unit and the second flange unit are the same or different and are installed facing each other. The first flange unit includes a concave stop end flange and a convex stop end flange. The two ends of the concave stop end flange and the convex stop end flange are clamped and installed on the pipe fitting to be connected by clamping bolts. The first flange unit and the second flange unit are respectively connected to the pipe fitting to be connected. The first flange unit and the second flange unit are connected by a number of axial connecting bolts. A sealing gasket is provided between the joint surfaces of the first flange unit and the second flange unit.

[0006] The utility model provides a sizing clamp-type weld-free flange pipe connection structure, wherein one or more sealing rings are provided between the joint surfaces of the first flange unit, the second flange unit and the pipe to be connected.

[0007] The utility model provides a sizing clamp-type weld-free flange pipe connection structure, wherein the middle part of the inner side surface in the width direction of the first flange unit is provided with one or more sealing ring positioning grooves corresponding to the position of the sealing ring, and the sealing ring is assembled and installed in the sealing ring positioning groove.

[0008] The utility model provides a sizing clamp-type weld-free flange pipe connection structure. A plurality of positioning pins are provided on the pipe fittings to be connected, and the plurality of positioning pins are evenly distributed along the radial direction.

[0009] The utility model provides a fixed-size clamp-type weld-free flange pipe connection structure, wherein the first flange unit is provided with a positioning pin stop at a position corresponding to the positioning pin.

[0010] The utility model provides a sizing clamp-type weld-free flange pipeline connection structure, wherein the positioning pin is located between the sealing ring and the sealing gasket.

[0011] The utility model provides a sizing clamp-type weld-free flange pipe connection structure, wherein the joint surface of the female stop end flange and the male stop end flange is provided with a positioning groove, and the male stop end flange is provided with a positioning convex strip at the position corresponding to the positioning groove, and the positioning groove and the positioning convex strip are installed in coordination.

[0012] The utility model provides a sizing clamp-type weld-free flange pipe connection structure, wherein the positioning grooves and the positioning convex strips are matched in one or more groups.

[0013] The utility model provides a sizing clamp-type weld-free flange pipe connection structure, wherein the length directions of the positioning groove and the positioning convex strip are perpendicular to the axial direction of the first flange unit.

[0014] The beneficial effects of the utility model are as follows: a sizing clamp-type weld-free flange pipe connection structure is proposed, which clamps the pipe fitting to be connected by arranging a split concave stop end flange and a convex stop end flange, thereby realizing a welding-free operation; and a sealing ring is arranged between the flange unit and the pipe fitting to be connected and matched with a sealing ring positioning groove, thereby realizing a sealed connection between the flange unit and the pipe fitting; a sealing gasket is arranged between the two flange units to realize the sealing between the two flanges; a locating pin arranged on the pipe fitting is matched with the axial connecting flange, thereby preventing axial displacement of the pipe fitting and the flange unit, thereby making the connection structure more stable and reliable; and the locating pin is arranged between the sealing ring and the sealing gasket, thereby also sealing the seepage at the connection between the locating pin and the pipe fitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0016] Figure 1 This is a schematic diagram of a bracket according to an embodiment of the present utility model;

[0017] Figure 2 This is a schematic top view of an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of a flange unit according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the inner ring structure of the flange unit of an embodiment of the present utility model;

[0020] Figure 5 It is a side view of the flange unit of an embodiment of the present utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, rather than all the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] like Figure 1-5 As shown, a sizing clamp-type weld-free flange pipe connection structure includes: a pipe fitting 300 to be connected, the pipe fitting 300 to be connected is two split structures, and a first flange unit 100 and a second flange unit 200 are respectively provided at the joint surface of the pipe fitting 300 to be connected, the structures of the first flange unit 100 and the second flange unit 200 are the same or different and are installed facing each other, the first flange unit 100 includes a concave stop end flange 110 and a convex stop end flange 120, the two ends of the concave stop end flange 110 and the convex stop end flange 120 are clamped and installed on the pipe fitting 300 to be connected by clamping bolts 130, the first flange unit 100 and the second flange unit 200 are respectively connected to the pipe fitting 300 to be connected, the first flange unit 100 and the second flange unit 200 are connected by a number of axial connecting bolts 400, and a sealing gasket 500 is provided between the joint surfaces of the first flange unit 100 and the second flange unit 200.

[0023] It should be noted that the material of the pipe fitting 300 to be connected is metal or non-metal, wherein the material of the first flange unit 100 and the second flange unit 200 is metal or non-metal, the diameters of the two parts of the pipe fitting 300 to be connected are the same or different, and the second flange unit 200 can have the same structure as the first flange 100, or it can be a traditional welded flange.

[0024] As a preferred embodiment, one or more sealing rings 600 are provided between the joint surfaces of the first flange unit 100 and the second flange unit 200 and the pipe 300 to be connected. Different numbers of sealing rings or sealing rings of different pressure levels can be provided according to the pressure levels of different usage scenarios.

[0025] As a preferred embodiment, one or more sealing ring positioning grooves 160 are provided at the middle of the inner side surface in the width direction of the first flange unit 100 corresponding to the position of the sealing ring 600, and the sealing ring 600 is assembled and installed in the sealing ring positioning grooves 160.

[0026] That is to say, a portion of the sealing ring 600 is embedded in the sealing ring positioning groove 160 in the thickness direction, but the sealing ring 600 still has some compression space.

[0027] As a preferred embodiment, a plurality of positioning pins 700 are provided on the pipe 300 to be connected, and the plurality of positioning pins 700 are evenly distributed along the radial direction.

[0028] As a preferred embodiment, the first flange unit 100 has a positioning pin stop 170 at a position corresponding to the positioning pin 700. The positioning pin stop 170 can be set at the end surface or at the middle, such as the radial inner side.

[0029] Such a structure prevents the pipe 300 to be connected from being disengaged in a direction away from the flange unit. Of course, a waterproof structure such as glue or a sealing sleeve can also be provided at the installation location of the positioning pin 700.

[0030] As a preferred embodiment, the positioning pin 700 is located between the sealing ring 600 and the sealing gasket 500. Such a structure can prevent leakage of liquid even if there is local water leakage at the connection between the positioning pin and the pipe 300 to be connected.

[0031] As a preferred embodiment, the mating surfaces of the female end flange 110 and the male end flange 120 have positioning grooves, and the male end flange 120 has positioning ridges at locations corresponding to the positioning grooves. The positioning grooves and the positioning ridges are assembled in a coordinated manner. This structure prevents the female end flange 110 and the male end flange 120 from sliding relative to each other in the horizontal direction and assists in installation and positioning.

[0032] As a preferred embodiment, the positioning grooves and positioning ridges are matched in one or more groups.

[0033] As a preferred embodiment, the length directions of the positioning grooves and the positioning ridges are perpendicular to the axial direction of the first flange unit 100 .

[0034] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified or 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0036] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

Claims

1. A sizing clamp-type weld-free flange pipe connection structure, characterized in that: include: A pipe fitting (300) to be connected, wherein the pipe fitting (300) to be connected is a two-piece split structure, wherein a first flange unit (100) and a second flange unit (200) are respectively provided at the joint surface of the pipe fitting (300), wherein the first flange unit (100) and the second flange unit (200) have the same or different structures and are installed facing each other, wherein the first flange unit (100) comprises a concave stop end flange (110) and a convex stop end flange (120), wherein the concave stop end flange (110) The two ends of the flange (120) at the convex end are clamped and installed on the pipe fitting (300) to be connected by clamping bolts (130), the first flange unit (100) and the second flange unit (200) are respectively connected to the pipe fitting (300) to be connected, the first flange unit (100) and the second flange unit (200) are connected by a plurality of axial connecting bolts (400), and a sealing gasket (500) is provided between the joint surfaces of the first flange unit (100) and the second flange unit (200).

2. A sizing clamp-type weld-free flange pipe connection structure according to claim 1, characterized in that: One or more sealing rings (600) are provided between the joint surfaces of the first flange unit (100) and the second flange unit (200) and the pipe fitting (300) to be connected.

3. A sizing clamp-type weld-free flange pipe connection structure according to claim 2, characterized in that: One or more sealing ring positioning grooves (160) are provided at the middle of the inner side surface in the width direction of the first flange unit (100) corresponding to the position of the sealing ring (600), and the sealing ring (600) is assembled and installed in the sealing ring positioning grooves (160).

4. A sizing clamp-type weld-free flange pipe connection structure according to claim 3, characterized in that: A plurality of positioning pins (700) are provided on the pipe fitting (300) to be connected, and the plurality of positioning pins (700) are evenly distributed along the radial direction.

5. A sizing clamp-type weld-free flange pipe connection structure according to claim 4, characterized in that: A positioning pin stop (170) is provided at a position corresponding to the positioning pin (700) of the first flange unit (100).

6. A sizing clamp-type weld-free flange pipe connection structure according to claim 5, characterized in that: The positioning pin (700) is located between the sealing ring (600) and the sealing gasket (500).

7. The sizing clamp-type weld-free flange pipe connection structure according to claim 1 is characterized in that: A positioning groove is provided at the joint surface between the concave stop end flange (110) and the convex stop end flange (120), and a positioning convex strip is provided at a position corresponding to the positioning groove on the convex stop end flange (120), and the positioning groove and the positioning convex strip are assembled in coordination.

8. The sizing clamp-type weld-free flange pipe connection structure according to claim 7 is characterized in that: The positioning grooves and positioning ridges are matched in one or more groups.

9. The sizing clamp-type weld-free flange pipe connection structure according to claim 7, characterized in that: The length directions of the positioning groove and the positioning ridge are perpendicular to the axial direction of the first flange unit (100).

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