Process pipeline multi-stage sealing connection device

Abstract

The utility model relates to the field of pipeline sealing connection, in particular to a multi-stage sealing connection device for process pipelines. The multi-stage sealing connecting device for the process pipeline comprises two connecting seats, and external connecting pipes are welded and fixed to the two connecting seats; wherein one side of one connecting seat is provided with a step-shaped inner concave part, one side of the other connecting seat is provided with a step-shaped outer convex part, and the outer convex part can be inserted into the inner concave part, so that the two connecting seats are assembled and connected; an auxiliary sealing piece is further installed in the contact area of the flat end faces of the inner concave part and the outer convex part. The circumferential outer walls of the two connecting bases are further sleeved with rubber rings covering the gap between the two connecting bases. A plurality of annularly-distributed reinforcing assemblies are further arranged outside the two connecting bases. According to the multi-stage sealing connection device for the process pipelines, the multi-stage sealing structure is arranged between the two sets of connecting bases, so that the connection sealing performance between the pipelines is higher, and reliable sealing connection under the working conditions of high pressure, high temperature or corrosive media is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing connection, and in particular to a multi-stage sealing connection device for process pipelines. Background Technology

[0002] Process piping refers to industrial piping used for conveying, distributing, mixing, separating, discharging, or reusing process fluids.

[0003] For the connection between this type of pipe, a flange is generally installed at the end of the pipe. Two adjacent pipes are fixed together by the flange to achieve a stable connection between the two pipe sections. At the same time, a sealing gasket is placed between the two flanges to ensure a seal between them.

[0004] However, the following defects and shortcomings still exist in the application implementation process:

[0005] The structure of this type of connection device is relatively simple, and the sealing methods and structures it is compatible with are relatively limited, resulting in poor sealing performance and a tendency to leak.

[0006] Therefore, it is necessary to provide a new multi-stage sealing connection device for process pipelines to solve the above-mentioned technical problems. Utility Model Content

[0007] To solve the above-mentioned technical problems, this utility model provides a multi-stage sealing connection device for process pipelines.

[0008] The multi-stage sealing connection device for process pipelines provided by this utility model includes two connecting seats, and an external pipe is welded and fixed on each of the two connecting seats.

[0009] One of the connecting seats has a stepped concave portion on one side, while the other connecting seat has a stepped convex portion on one side. The convex portion can be inserted into the concave portion to assemble and connect the two connecting seats.

[0010] Auxiliary seals are also installed in the contact area of ​​the concave and convex flat end faces;

[0011] The outer circumferential walls of the two connecting seats are also fitted with rubber rings to cover the gap between them;

[0012] Multiple ring-shaped reinforcing components are also provided on the outside of the two connecting seats, which are in contact with and compressed against the rubber ring.

[0013] Preferably, multiple annularly distributed fixing seats are welded to the outer circumference of both connecting seats, with a certain interval between the fixing seats and fixed by bolts and nuts.

[0014] Preferably, the circumferential surface of the concave portion has a first semi-annular groove, while the circumferential surface of the convex portion has a second semi-annular groove. When the convex portion is inserted into the interior of the concave portion, the first semi-annular groove and the second semi-annular groove together form a sealing ring groove.

[0015] Preferably, the auxiliary sealing element is an inflatable sealing ring, which is embedded inside the sealing ring groove, and an air nozzle extending to the outside of the connecting seat is also provided on the inflatable sealing ring.

[0016] Preferably, a ring groove is provided on the outer circumference of the two connecting seats at the position where the mating surfaces overlap, and the rubber ring is sleeved inside the ring groove.

[0017] Preferably, the reinforcement assembly includes a mounting base having a through hole, the mounting base being located between two opposing fixing seats so that a bolt can pass through the mounting base along the hole, and an elastic pressure plate welded to the mounting base, the elastic pressure plate contacting and compressing a rubber ring.

[0018] Compared with related technologies, the multi-stage sealing connection device for process pipelines provided by this utility model has the following advantages:

[0019] This utility model provides a multi-stage sealing connection device for process pipelines, in which a multi-stage sealing structure is set between two sets of connecting seats, so as to improve the sealing performance of the connection between pipelines and realize a reliable sealing connection under high pressure, high temperature or corrosive media conditions. Attached Figure Description

[0020] Figure 1 A schematic diagram of a preferred embodiment of the multi-stage sealing connection device for process pipelines provided by this utility model;

[0021] Figure 2 This is a schematic diagram of a partially exploded connection of the connector shown in this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the concave portion shown in this utility model;

[0023] Figure 4 This is a schematic diagram of the external protrusion shown in this utility model;

[0024] Figure 5 This is a schematic diagram of the auxiliary sealing element shown in this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the reinforcement component shown in this utility model.

[0026] The following are the labels in the diagram: 1. Connecting seat; 11. Concave part; 12. First semi-annular groove; 13. Outer protrusion; 14. Second semi-annular groove; 15. Fixing seat; 16. Full ring groove; 2. Outer pipe; 3. Auxiliary sealing element; 31. Inflatable sealing ring; 32. Air nozzle; 4. Rubber ring; 5. Reinforcing component; 51. Mounting seat; 52. Elastic pressure plate; 6. Bolt; 7. Nut. Detailed Implementation

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0032] Please see Figures 1 to 6 The present invention provides a multi-stage sealing connection device for process pipelines, which includes two connecting seats 1, and an outer connecting pipe 2 is welded and fixed on each of the two connecting seats 1.

[0033] One of the connecting seats 1 has a stepped concave portion 11 on one side, while the other connecting seat 1 has a stepped convex portion 13 on one side. The convex portion 13 can be inserted into the concave portion 11 so that the two connecting seats 1 can be assembled and connected.

[0034] An auxiliary sealing element 3 is also installed in the contact area between the flat end faces of the concave portion 11 and the convex portion 13.

[0035] The outer circumference of the two connecting seats 1 is also fitted with rubber rings 4 to cover the gap between them;

[0036] Multiple reinforcing components 5 are arranged in a ring shape outside the two connecting seats 1, which contact and compress the rubber ring 4.

[0037] It should be noted that in this type of pipe connection structure, there is an external pipe 2 at one end of the connecting seat 1. The external pipe 2 is used to connect to the main pipe structure. The connection method between the external pipe and the main pipe depends on the material of the main pipe itself and is connected using the corresponding traditional installation method.

[0038] The two connecting seats 1 can be connected to each other to realize the connection between the main pipes. Among the two connecting seats 1, one connecting seat 1 has a concave part 11 and the other connecting seat 1 has an convex part 13. Both the concave part 11 and the convex part 13 are stepped. After the two are assembled and connected, they have a certain sealing effect and can improve the connection compactness between the two connecting seats 1.

[0039] The flat end face area where the concave portion 11 and the convex portion 13 contact each other has an auxiliary seal 3, which further fills the gap between the two and can further improve the sealing performance.

[0040] A rubber ring 4 is provided on the outer circumferential wall area of ​​the two connecting seats 1. The rubber ring 4 covers the gap between the two connecting seats 1, thereby achieving multi-stage sealing between the two connecting seats 1 and improving the sealing effect.

[0041] The reinforcing component 5 is designed for the rubber ring 4, and it can compress the rubber ring 4 to make the contact between the rubber ring 4 and the connecting seat 1 more compact.

[0042] In the embodiments of this utility model, please refer to Figure 1 and Figure 2 Multiple ring-shaped fixing seats 15 are welded to the outer circumference of both connecting seats 1. The fixing seats 15 are spaced apart and fixed by bolts 6 and nuts 7.

[0043] It should be noted that the two connecting seats 1 have external fixing seats 15, which can be fixed by bolts 6 and nuts 7 to ensure their stability.

[0044] In the embodiments of this utility model, please refer to Figures 3 to 5 The concave portion 11 has a first semi-annular groove 12 on its circumferential surface, and the convex portion 13 has a second semi-annular groove 14 on its circumferential surface. When the convex portion 13 is inserted into the concave portion 11, the first semi-annular groove 12 and the second semi-annular groove 14 together form a sealing ring groove.

[0045] Meanwhile, the auxiliary sealing element 3 is an inflatable sealing ring 31, which is embedded inside the sealing ring groove. An air nozzle 32 extending to the outside of the connecting seat 1 is also provided on the inflatable sealing ring 31.

[0046] It should be noted that both the concave portion 11 and the convex portion 13 have semi-annular grooves. After assembly, the semi-annular grooves form a sealing ring groove. The auxiliary sealing element 3 is mainly an inflatable sealing ring 31. The inflatable sealing ring 31 can be installed inside the sealing ring groove to seal the gap between the two. Moreover, the inflatable sealing ring 31 is adjustable and has better sealing performance.

[0047] In the embodiments of this utility model, please refer to Figure 2 The outer circumference of the two connecting seats 1 and the overlapping mating surfaces are provided with a ring groove 16, and the rubber ring 4 is fitted inside the ring groove 16.

[0048] It should be noted that the ring groove 16 is designed to install the rubber ring 4, thereby positioning the rubber ring 4 and preventing it from shifting.

[0049] In the embodiments of this utility model, please refer to Figure 6 The reinforcing component 5 includes a mounting base 51 with a through hole. The mounting base 51 is located between two opposing fixing bases 15, allowing the bolt 6 to pass through the hole through the mounting base 51. An elastic pressure plate 52 is also welded onto the mounting base 51, which contacts and compresses the rubber ring 4.

[0050] It should be noted that in the reinforcement component 5, the mounting base 51 is mounted on the bolt 6. That is, when using the bolt 6 to reinforce the two connecting seats 1, the mounting base 51 can be placed between the two fixed seats 15 first, and then the bolt 6 can pass through the mounting base 51. The elastic pressure plate 52 on the mounting base 51 can contact the rubber ring 4 and generate elastic compression to further reinforce the rubber ring 4.

[0051] The elastic pressure plates 52 in the multiple reinforcing components 5 can form a metal ring, thus increasing the area covering the rubber ring 4, improving the positioning effect of the rubber ring 4, and preventing the rubber ring 4 from being scratched by foreign objects.

[0052] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0053] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A multi-stage sealing connection device for process pipelines, comprising two connecting seats (1), each of which is welded and fixed with an external connecting pipe (2), characterized in that: One of the connecting seats (1) has a stepped concave portion (11) on one side, while the other connecting seat (1) has a stepped convex portion (13) on one side. The convex portion (13) can be inserted into the concave portion (11) so that the two connecting seats (1) are assembled and connected. An auxiliary seal (3) is also installed in the contact area of ​​the flat end face of the concave part (11) and the convex part (13). The outer circumferential walls of the two connecting seats (1) are also fitted with rubber rings (4) to cover the gap between them. Multiple reinforcing components (5) are also provided outside the two connecting seats (1) in a ring shape, which contact and compress the rubber ring (4).

2. The multi-stage seal connection for process piping according to claim 1, wherein, Multiple ring-shaped fixing seats (15) are welded to the outer circumference of both connecting seats (1). The fixing seats (15) are spaced apart and fixed by bolts (6) and nuts (7).

3. The multi-stage seal connection of process piping according to claim 2, characterized in that The concave portion (11) has a first semi-annular groove (12) on its circumferential surface, and the convex portion (13) has a second semi-annular groove (14) on its circumferential surface. When the convex portion (13) is inserted into the concave portion (11), the first semi-annular groove (12) and the second semi-annular groove (14) together form a sealing ring groove.

4. The multi-stage seal connection for process piping of claim 1, wherein, The auxiliary sealing element (3) is an inflatable sealing ring (31), which is embedded in the sealing ring groove. An air nozzle (32) extending to the outside of the connecting seat (1) is also provided on the inflatable sealing ring (31).

5. The multi-stage seal connection for process piping of claim 1, wherein, The two connecting seats (1) are provided with a ring groove (16) at the position of the overlapping mating surface on the outer circumference of the two connecting seats (1), and the rubber ring (4) is fitted inside the ring groove (16).

6. The multi-stage seal connection for process piping of claim 1, wherein, The reinforcement component (5) includes a mounting base (51) having a through hole, the mounting base (51) being located between two opposing fixing bases (15) such that a bolt (6) can pass through the mounting base (51) along the hole, and an elastic pressure plate (52) is also welded onto the mounting base (51), the elastic pressure plate (52) contacting and squeezing a rubber ring (4).

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