An adjustable pipeline connection structure and pipeline system

Abstract

The utility model discloses an adjustable pipeline connection structure and pipeline system, the pipeline connection structure comprises a flared flange, a flared steel pipe, an intermediate, a first connection flange, a second connection flange, and a sealing assembly, one end of the flared flange is provided with a flared opening, the flared end of the flared steel pipe is tapered, the flared outer end face of the flared steel pipe is abutted against the flared inner end face of the flared flange, a first connection channel is provided inside the first connection flange, a second connection channel is provided inside the second connection flange, the second connection channel is a stepped shaft, comprising an outer large diameter section and an inner small diameter section, the large diameter section of the second connection channel is provided with a first groove, a first sealing ring is arranged in the first groove, the flared steel pipe is inserted into the second connection channel through clearance fit, and its end is located between the first sealing ring and the steps of the large diameter section and the small diameter section. The structure has adjustable capability, and reduces the difficulty of processing and assembling various components of the pipeline.

Description

Technical Field

[0001] The utility model specifically relates to an adjustable pipeline connection structure and a pipeline system comprising the pipeline connection structure. Background Art

[0002] The flared forming pipe connection is a commonly used hard pipe connection method, which generally includes two flared flanges, two cone sleeve intermediates, a hollow flared steel pipe with an intermediate transition and its matching sealing O-ring and fixing screws. The two ends of the flared forming pipe are respectively connected to the straight-through or right-angle flanges at the fixed end, and the flared ends of the two flared forming flanges are tightly fixed in a certain position through the threaded connection of the screws, thereby realizing the connection of the hard pipe. Compared with the traditional welded pipe, the flared forming pipe connection can connect pipes of different diameters. It has a wider range of applications, simple installation, easy maintenance, and can withstand greater pressure and has good corrosion resistance.

[0003] However, in the flared formed pipe connection, since both ends of the connected flanges are completely fixed, there are strict requirements on the processing size and assembly process of each part in the flared formed pipe. If any of the parts is not processed or assembled properly, the flared formed pipe cannot be assembled or the pipe is stretched and there is a risk of pipe movement, which will eventually lead to pipe leakage. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide an adjustable pipeline connection structure and a pipeline system including the pipeline connection structure in view of the above-mentioned deficiencies in the prior art. The pipeline connection structure has a certain adjustable capability, which reduces the difficulty and requirements of processing and assembling the components of the pipeline connection structure.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] An adjustable pipeline connection structure comprises a flared flange, an flared molded steel pipe, an intermediate, a first connecting flange, a second connecting flange, and a sealing assembly, wherein one end of the flared flange is provided with a conical flare outwardly, one end of the flared molded steel pipe is a flared end, and the other end is an insertion end, the flared end of the flared molded steel pipe is a conical flare opened outwardly, and the contour of the conical flared outer end face of the flared molded steel pipe is consistent with the contour of the conical flared inner end face of the flared flange, the conical flared outer end face of the flared molded steel pipe is abutted against the conical flared inner end face of the flared flange, a first connecting flange is provided with a first connecting channel inside, and the intermediate is arranged between the flared molded steel pipe and the The first connecting flange is between the first connecting flange and the flared flange. When the first connecting flange is connected to the flared flange, the intermediate body presses the flared molded steel pipe and the flared flange to connect the flared end of the flared molded steel pipe with the first connecting channel. A second connecting channel is provided inside the second connecting flange. The second connecting channel is a stepped shaft, including an external large diameter section and an internal small diameter section. A first groove is provided in the large diameter section of the second connecting channel. The sealing assembly includes a first sealing ring, which is arranged in the first groove. The insertion end of the flared molded steel pipe is inserted into the second connecting channel through a clearance fit, and its end is located between the first sealing ring and the steps of the large diameter section and the small diameter section.

[0007] Preferably, the length of the large diameter section is in the range of 20-25 mm.

[0008] Preferably, a retaining ring is also sleeved on the expanded formed steel pipe, and the retaining ring and the first sealing ring are arranged in the first groove together to prevent the first sealing ring from moving along the axis of the second sealing channel.

[0009] Preferably, the sealing assembly further includes a second sealing ring and a third sealing ring.

[0010] The second sealing ring is arranged between the first connecting flange and the intermediate body, and the third sealing ring is arranged between the intermediate body and the expanded formed steel pipe.

[0011] Preferably, a guiding slope is provided at the end of the insertion end of the expanded formed steel pipe.

[0012] Preferably, the first connecting flange and the second connecting flange are both right-angle flanges, the first connecting flange and the second connecting flange both have a first end face and a second end face, the first end face and the second end face of the first connecting flange and the second connecting flange are perpendicular to each other, the first end face of the first connecting flange is connected to the flared end of the expanded molded steel pipe, and the first end face of the second connecting flange is connected to the inserted end of the expanded molded steel pipe.

[0013] Preferably, the flared flange is connected to the first connecting flange via a connecting assembly, the connecting assembly comprising a plurality of bolts, the first end face of the first connecting flange being provided with a plurality of bolt holes, the flared flange being provided with a plurality of threaded holes, each bolt passing through the bolt hole on the first end face of the first connecting flange in turn and then being threadedly connected with the threaded hole on the flared flange.

[0014] The utility model also provides a pipeline system, including a first pipeline, a second pipeline, and also the above-mentioned pipeline connection structure, the second end face of the first connecting flange is connected to the first pipeline so that the first pipeline is communicated with the first connecting channel, the second end face of the second connecting flange is connected to the second pipeline so that the second pipeline is communicated with the second connecting channel, thereby connecting the first pipeline and the second pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the adjustable pipeline connection structure in Example 1 of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the flared flange, the flared formed steel pipe and the intermediate body in Example 1 of the utility model;

[0017] Figure 3 It is a schematic structural diagram of the first connecting flange and the second connecting flange in Example 1 of the utility model.

[0018] In the figure: 100-flared flange, 200-flared formed steel pipe, 210-guide slope, 300-first connecting flange, 310-first connecting channel, 400-second connecting flange, 410-second connecting channel, 500-first sealing ring, 510-second sealing ring, 520-third sealing ring, 600-intermediate body, 700-retaining ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the utility model.

[0020] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connection", "setting", "installation", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection 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 the specific circumstances.

[0023] The utility model provides an adjustable pipeline connection structure, including a flared flange, a flared molded steel pipe, an intermediate, a first connecting flange, a second connecting flange, and a sealing component. One end of the flared flange is provided with a conical flare outwardly, one end of the flared molded steel pipe is a flared end, and the other end is an insertion end. The flared end of the flared molded steel pipe is a conical flare opened outwardly, and the contour of the conical flared outer end face of the flared molded steel pipe is consistent with the contour of the conical flared inner end face of the flared flange. The conical flared outer end face of the flared molded steel pipe is abutted against the conical flared inner end face of the flared flange. A first connecting channel is provided inside the first connecting flange. The intermediate is arranged on the flared molded steel pipe. The expansion joint of the steel pipe is connected to the expansion flange by the intermediate body, thereby connecting the expansion end of the expansion flange to the first connection channel. The second connection flange is provided with a second connection channel inside. The second connection channel is a stepped shaft, including an outer large diameter section and an inner small diameter section. The large diameter section of the second connection channel is provided with a first groove. The sealing assembly includes a first sealing ring, which is arranged in the first groove. The insertion end of the expansion flange is inserted into the second connection channel through clearance fit, and its end is located between the first sealing ring and the steps of the large diameter section and the small diameter section.

[0024] The utility model also provides a pipeline system, including a first pipeline, a second pipeline, and also the above-mentioned pipeline connection structure, the second end face of the first connecting flange is connected to the first pipeline so that the first pipeline is communicated with the first connecting channel, the second end face of the second connecting flange is connected to the second pipeline so that the second pipeline is communicated with the second connecting channel, thereby connecting the first pipeline and the second pipeline.

[0025] Example 1

[0026] like Figure 1-3As shown, this embodiment discloses an adjustable pipeline connection structure, including a flaring flange 100, a flaring molded steel pipe 200, an intermediate body 600, a first connecting flange 300, a second connecting flange 400, and a sealing assembly. One end of the flaring flange 100 is provided with a conical flare outwardly. One end of the flaring molded steel pipe 200 is a flaring end, and the other end is an insertion end. The flaring end of the flaring molded steel pipe 200 is a conical flare opened outwardly (processed by a flaring molding process), and the contour of the conical flaring outer end face of the flaring molded steel pipe 200 is consistent with the contour of the conical flaring inner end face of the flaring flange 100, and the conical flaring outer end face of the flaring molded steel pipe 200 is close to the conical flaring inner end face of the flaring flange 100.

[0027] In this embodiment, a first connecting channel 310 is provided inside the first connecting flange 300, and an intermediate body 600 is arranged between the expanded molded steel pipe 200 and the first connecting flange 300. When the first connecting flange 300 is connected to the expanded flange 100, the intermediate body 600 presses the expanded molded steel pipe 200 and the expanded flange 100, thereby connecting the expanded end of the expanded molded steel pipe 200 with the first connecting channel 310.

[0028] Specifically, one end of the intermediate body 600 is a tapered structure that matches the contour of the tapered flared inner end face of the expanded steel pipe 200, and the tapered structure of the intermediate body 600 is in contact with the tapered flared inner end face of the expanded steel pipe 200. The intermediate body 600 is used to press the tapered flared end of the expanded steel pipe 200 onto the tapered flared end of the expanded flange 100.

[0029] The first connection channel 310 of the first connection flange 300 is respectively connected to the first end face and the second end face of the first connection flange 300. The second connection channel 410 is respectively connected to the first end face and the second end face of the second connection flange 400; the other end of the intermediate body 600 is a plane and abuts against the first end face of the first connection flange 300. The first end face of the first connection flange 300 is fixedly connected to the flared flange 100 through a connection assembly, so that the tapered flare of the flared steel pipe 200 is pressed against the tapered flare of the flared flange 100 through the intermediate body 600, thereby ensuring the sealing of the connection between the first connection flange 300 and the flared flange 100.

[0030] The expanded molded steel pipe 200 is a hollow structure, and its expanded end is connected to the first connecting channel 310. The insertion end of the expanded molded steel pipe 200 is inserted into the second connecting channel 410 and connected to the second connecting channel 410, thereby connecting the first connecting channel 310 and the second connecting channel 410. The other end of the first connecting channel 310 and the other end of the second connecting channel 410 are respectively used to connect the pipes to be connected.

[0031] Specifically, the second connecting channel 410 is a stepped shaft, including an outer large diameter section and an inner small diameter section. A first groove is provided in the large diameter section of the second connecting channel 410. The sealing assembly includes a first sealing ring 500, which is provided in the first groove. The insertion end of the expanded steel pipe 200 is inserted into the second connecting channel 410 through clearance fit, and its end is located between the first sealing ring 500 and the steps of the large diameter section and the small diameter section. Thus, while ensuring adjustability, the sealing performance can be ensured, and the adjustment range is between the steps of the large diameter section and the small diameter section and the first sealing ring 500.

[0032] In order to ensure the stability of the connection, the length of the large diameter section ranges from 20 to 25 mm.

[0033] like Figure 1 As shown, a retaining ring 700 is also sleeved on the expanded steel pipe 200, and the retaining ring 700 and the first sealing ring 500 are arranged in the first groove together, and are used to prevent the first sealing ring 500 from moving along the axis of the second sealing channel. That is to say, when the expanded steel pipe 200 is inserted or withdrawn along the axial direction of the second connecting channel 410, the retaining ring 700 can limit the axial movement of the first sealing ring 500 along the second connecting channel 410, thereby ensuring the sealing stability.

[0034] like Figure 1 As shown, in this embodiment, the sealing assembly further includes a second sealing ring 510 and a third sealing ring 520, and the first sealing ring 500, the second sealing ring 510, and the third sealing ring 520 are all rubber O-rings. The second sealing ring 510 is arranged between the first connecting flange 300 and the intermediate body 600, and the third sealing ring 520 is arranged between the intermediate body 600 and the expanded steel pipe 200.

[0035] Specifically, a second groove is provided on the end surface of the intermediate body 600 that contacts the first connection flange 300, and the second sealing ring 510 is installed in the second groove, thereby increasing the sealing performance between the first connection flange 300 and the intermediate body 600. A third groove is provided on the outer end surface of the tapered structure of the intermediate body 600, and the third sealing ring 520 is installed in the third groove, thereby increasing the sealing performance between the expanded steel pipe 200 and the intermediate body 600. A first groove is provided on the inner wall of the second connection channel 410, and the first sealing ring 500 is installed in the third groove, thereby increasing the sealing performance between the expanded steel pipe 200 and the second connection flange 400. The rubber sealing ring has a certain elasticity and can ensure durability and improve service life.

[0036] like Figure 1 , 3As shown, the second connection channel 410 is a stepped hole, the small diameter section of the second connection channel 410 is located inside the large diameter section (the large diameter section is located at one end close to the first end face of the second connection flange 400), the outer diameter of the expanded molded steel pipe 200 is slightly smaller than the inner diameter of the large diameter section of the second connection channel 410, and the insertion end of the expanded molded steel pipe 200 is inserted into the large diameter section of the second connection channel 410. Since the expanded molded steel pipe 200 and the second connection flange 400 are connected in a non-fixed connection manner, when the pipeline connection structure is assembled, the expanded molded steel pipe 200 can move within a certain range along the axial direction of the second connection channel 410, thereby reducing the assembly difficulty of the pipeline connection structure, and reducing the processing accuracy requirements for each component of the pipeline connection structure, thereby reducing the processing difficulty.

[0037] It is worth noting that the insertion end of the expanded steel pipe 200 needs to be finely processed, and its diameter and surface roughness need to meet the sealing requirements. The large diameter section of the second connecting channel 410 needs to reserve an assembly margin, and the fine processing length of the insertion end of the expanded steel pipe 200 needs to be greater than the length of the large diameter section of the second connecting channel 410 to ensure assembly. In addition, the diameter of the large diameter section of the second connecting channel 410 and the roughness of its inner surface need to meet the sealing requirements.

[0038] Optionally, in order to facilitate the expansion and forming of the steel pipe 200 to be inserted into the second connection channel 410, the end of the insertion end of the expansion and forming of the steel pipe 200 is provided with a guide slope 210. Figure 1 As shown, the end of the insertion end of the expanded formed steel pipe 200 is provided with a conical guide slope 210. The length and inclination angle of the guide slope 210 need to be set according to the actual sealing requirements, and the guide surface needs to be fine-processed to meet the surface roughness requirements.

[0039] Optionally, the first connection flange 300 and the second connection flange 400 are both right-angle flanges, and the plane where the first end face of the first connection flange 300 is located is perpendicular to the plane where the second end face is located; the plane where the first end face of the second connection flange 400 is located is perpendicular to the plane where the second end face is located. That is, the first connection channel 310 and the second connection channel 410 are both L-shaped. The first end face of the first connection flange 300 is connected to the flared end of the expanded molded steel pipe 200, and the first end face of the second connection flange 400 is connected to the insertion end of the expanded molded steel pipe 200.

[0040] In this embodiment, the flared flange 100 is connected to the first connection flange 300 through a connection assembly, which includes four bolts, the first end face of the first connection flange 300 is provided with four bolt holes (the four bolt holes are distributed along the circumference of the end face of the flared flange 100), the flared flange 100 is provided with four threaded holes (the four threaded holes are distributed along the circumference of the end face of the flared flange 100), and the bolt holes on the first connection flange 300 are aligned with the threaded holes on the flared flange 100 in position. After each bolt passes through the bolt hole on the first end face of the first connection flange 300 in turn, it is threadedly connected with the threaded hole on the flared flange 100, thereby fixing the first connection flange 300 and the flared flange 100 together.

[0041] One end of the flared formed steel pipe 200 of the adjustable pipeline connection structure in this embodiment is fixedly connected to the first connection flange 300 through the flared flange 100, and the other end is inserted into the second connection channel 410 of the second connection flange 400 to achieve a non-fixed connection, which can effectively combine the advantages of the flared flange 100 connection method and the plug-in connection, and utilize the characteristics of the plug-in connection end that does not need to be fixed, so that it can be adjusted and installed within a certain length, reducing the processing accuracy requirements and assembly process requirements for each component of the pipeline connection structure. The entire structure does not require welding, overcomes the shortcomings of welded pipeline connection fixation, and is convenient for assembly and adjustment.

[0042] At the same time, the sealing components are used to seal each connection to ensure the sealing performance of the pipeline. In addition, the structure is pressure-resistant, vibration-resistant, and can be disassembled and assembled repeatedly, which not only simplifies the assembly process, but also leaves enough assembly adjustment margin, effectively avoiding the risk of leakage caused by pipeline movement or tension.

[0043] Example 2

[0044] The present embodiment discloses a pipeline system, including a first pipeline, a second pipeline, and also includes the pipeline connection structure in Example 1, the second end face of the first connecting flange 300 is connected to the first pipeline so that the first pipeline is connected to the first connecting channel 310, and the second end face of the second connecting flange 400 is connected to the second pipeline so that the second pipeline is connected to the second connecting channel 410, thereby connecting the first pipeline and the second pipeline.

[0045] In this embodiment, the first pipeline and the second pipeline are filled with oil and are connected through the pipeline connection structure. The connection between the first pipeline and the first connection flange 300 and the second pipeline and the second connection flange 400 need to be provided with sealing members to prevent leakage.

[0046] The first pipeline and the second pipeline of the pipeline system in this embodiment are connected through a pipeline connection structure, which is convenient and quick to connect and has good sealing performance. In addition, since the pipeline connection structure is adjustable, it is helpful to reduce the assembly difficulty of the entire pipeline system.

[0047] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An adjustable pipeline connection structure, characterized in that: It comprises a flared flange (100), a flared formed steel pipe (200), an intermediate body (600), a first connecting flange (300), a second connecting flange (400), and a sealing assembly. One end of the flared flange (100) is provided with a conical flared opening outwardly. One end of the expanded molded steel pipe (200) is a expanded end, and the other end is an insertion end. The expanded end of the expanded molded steel pipe (200) is a conical expansion opening outward, and the contour of the conical expansion outer end surface of the expanded molded steel pipe (200) is consistent with the contour of the conical expansion inner end surface of the expanded flange (100). The conical expansion outer end surface of the expanded molded steel pipe (200) is in contact with the conical expansion inner end surface of the expanded flange (100). A first connecting channel is provided inside the first connecting flange (300), and the first connecting channel is connected to a first end face and a second end face of the first connecting flange (300) respectively. The intermediate body (600) is arranged between the expanded molded steel pipe (200) and the first connecting flange (300). When the first connecting flange (300) is connected to the expanded flange (100), the intermediate body (600) presses the expanded molded steel pipe (200) and the expanded flange (100) tightly, thereby connecting the expanded end of the expanded molded steel pipe (200) and the first connecting channel. A second connecting channel (410) is provided inside the second connecting flange (400), and the second connecting channel (410) is connected to the first end face and the second end face of the second connecting flange (400) respectively. The second connecting channel (410) is a stepped shaft, including an outer large diameter section and an inner small diameter section. A first groove is provided in the large diameter section of the second connecting channel (410). The sealing assembly includes a first sealing ring (500), and the first sealing ring (500) is arranged in the first groove. The insertion end of the expanded formed steel pipe (200) is inserted into the second connecting channel (410) through a clearance fit, and its end is located between the first sealing ring (500) and the steps of the large diameter section and the small diameter section.

2. The adjustable pipeline connection structure according to claim 1, characterized in that: The length of the large diameter section is in the range of 20-25 mm.

3. The adjustable pipeline connection structure according to claim 2, characterized in that: The expanded steel pipe (200) is also sleeved with a retaining ring (700), and the retaining ring (700) and the first sealing ring (500) are arranged in the first groove to prevent the first sealing ring (500) from moving along the axis of the second sealing channel.

4. The adjustable pipeline connection structure according to claim 1, characterized in that: The sealing assembly further comprises a second sealing ring (510) and a third sealing ring (520). The second sealing ring (510) is arranged between the first connecting flange (300) and the intermediate body (600), and the third sealing ring (520) is arranged between the intermediate body (600) and the expanded steel pipe (200).

5. The adjustable pipeline connection structure according to claim 4, characterized in that: The end of the insertion end of the expanded shaped steel pipe (200) is provided with a guiding inclined surface (210).

6. The adjustable pipeline connection structure according to claim 1, characterized in that: The first connecting flange (300) and the second connecting flange (400) are both right-angle flanges. The first end surface of the first connecting flange (300) is in communication with the expanded end of the expanded molded steel pipe (200), and the first end surface of the second connecting flange (400) is in communication with the insertion end of the expanded molded steel pipe (200). The first end surface and the second end surface of the first connecting flange (300) are perpendicular to each other. The first end surface and the second end surface of the second connecting flange (400) are perpendicular to each other.

7. The adjustable pipeline connection structure according to claim 6, characterized in that: The flared flange (100) is connected to the first connecting flange (300) via a connecting assembly, wherein the connecting assembly comprises a plurality of bolts. The first end face of the first connecting flange (300) is provided with a plurality of bolt holes, and the flared flange (100) is provided with a plurality of threaded holes, and each bolt passes through the bolt hole on the first end face of the first connecting flange (300) in turn and is threadedly connected with the threaded hole on the flared flange (100).

8. A pipeline system, comprising a first pipeline and a second pipeline, characterized in that: It also includes the pipeline connection structure according to any one of claims 6 to 7, The second end face of the first connecting flange (300) is connected to the first pipe so that the first pipe is connected to the first connecting channel (310), and the second end face of the second connecting flange (400) (400) is connected to the second pipe so that the second pipe is connected to the second connecting channel (410), thereby connecting the first pipe and the second pipe.

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