Flange locking connecting structure for pipeline engineering

Abstract

The utility model relates to the technical field of pipeline engineering, in particular to a flange locking connecting structure for pipeline engineering, which comprises a first flange, a second flange and a locking component, the second flange is connected with the first flange in an attached manner, the first flange and the second flange are provided with fastening holes which are equal in number and correspond to each other, and the locking component comprises a bolt and a nut. The bolts penetrate through fastening holes of the first flange and the second flange and are fastened through the nuts, the protection assembly comprises a first shell and a second shell detachably and fixedly connected with the first shell, and the first flange and the second flange are wrapped with the first shell and the second shell respectively. Sealing covers are arranged at the positions, corresponding to the locking assemblies, in the first shell and the second shell and used for covering the nuts for sealing protection. The protection assembly is additionally arranged to wrap the flange, the bolt and the nut are effectively isolated through the sealing cover, and the influence of external factors on the locking assembly can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of pipeline engineering technology, and in particular to a flange locking connection structure for pipeline engineering. Background Technology

[0002] Pipeline connections are widely used in various industrial engineering projects, especially in industries such as petroleum, chemical, and power, where the sealing performance and connection stability of pipelines are crucial. Traditional pipeline connection structures often employ flange connections, which have become an important method due to their advantages such as ease of installation, high load-bearing capacity, and disassembly capability.

[0003] The tightening process of flange connections typically relies on bolt assemblies; however, in actual use, this is affected by the external environment. In particular, the bolt assembly mounting points are prone to severe corrosion, making it difficult to remove the bolts and nuts during later maintenance. Utility Model Content

[0004] To address the problems mentioned above, this utility model provides a flange locking connection structure for pipeline engineering.

[0005] The solution adopted by this utility model to solve its technical problem is: a flange locking connection structure for pipeline engineering, including a first flange, a second flange fitted to it, and a locking assembly. The first flange and the second flange have an equal number of corresponding fastening holes. The locking assembly includes bolts and nuts, and each bolt passes through the fastening holes of the first flange and the second flange and is fastened by the nut.

[0006] It also includes a protective component, which includes a first housing and a second housing detachably and fixedly connected thereto, the first housing and the second housing respectively enclosing the first flange and the second flange;

[0007] Furthermore, the first and second housings are equipped with sealing covers at the positions of the locking components to cover the nuts for sealing and protection.

[0008] Furthermore, a first sealing groove adapted to the sealing cover is formed around each of the fastening holes, and a first elastic sealing element is provided in the first sealing groove.

[0009] Furthermore, a snap-fit ​​assembly is provided between the first housing and the second housing to achieve a detachable fixed connection.

[0010] Furthermore, the end faces of the first and second housings have adjustable perforations for connecting pipes to pass through.

[0011] Furthermore, the first and second housings are made of high-strength engineering plastics or metal alloys.

[0012] Furthermore, the mating end faces of the first flange and the second flange are provided with corresponding second sealing grooves, and a second elastic sealing element is provided in the second sealing groove.

[0013] In summary, the beneficial effects of this utility model are as follows:

[0014] This application adds a protective assembly consisting of a first housing and a second housing, which can be securely wrapped around the first and second flanges. A sealing cover is provided inside the housing at the corresponding locking assembly position on the flange, forming a sealed cavity that can enclose the nut and bolt heads to isolate them from external environmental influences. A first sealing groove is formed around each fastening hole, and an elastic sealing element is fixedly embedded inside the first sealing groove by compression. After the sealing cover is installed, the first elastic sealing element further fills the gap between the sealing cover and the flange, forming a double sealing structure that effectively prevents external factors from affecting the locking assembly. The protective assembly adopts a detachable design, making the pipeline connection structure more convenient for maintenance, disassembly, or replacement.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is an exploded view of the protection components in this embodiment;

[0017] Figure 2 This is a schematic diagram of the structure of the protection component in this embodiment;

[0018] Figure 3 This is an overall schematic diagram of this embodiment;

[0019] Figure 4 This is an overall exploded view of this embodiment.

[0020] In the figure: 1. First flange; 2. Second flange; 3. Locking assembly; 31. Bolt; 32. Nut; 4. Fastening hole; 41. First sealing groove; 42. First elastic seal; 5. Protective assembly; 51. First housing; 52. Second housing; 6. Sealing cover; 7. Snap-fit ​​assembly; 8. Adjustable perforation; 9. Second sealing groove; 10. Second elastic seal. Detailed Implementation

[0021] To make the content of this utility model easier to understand, the present utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0022] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" used herein to indicate 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 do not indicate or imply that the device or element 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. Unless otherwise stated, "a plurality of" means two or more.

[0023] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between 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.

[0024] like Figures 1 to 4 As shown, a flange locking connection structure for pipeline engineering is disclosed. In this embodiment, a first flange 1, a second flange 2 fitted to it, and a locking assembly 3 are included. The first flange 1 and the second flange 2 have an equal number of corresponding fastening holes 4. The locking assembly 3 includes bolts 31 and nuts 32. Each bolt 31 passes through the fastening holes 4 of the first flange 1 and the second flange 2 and is fastened by the nut 32. The assembly also includes a protective assembly 5. The protective assembly 5 includes a first housing 51 and a second housing 52 detachably and fixedly connected to it. The first housing 51 and the second housing 52 respectively enclose the first flange 1 and the second flange 2. A sealing cover 6 is provided inside the first housing 51 and the second housing 52 at the positions corresponding to each locking assembly 3, for covering each nut 32 for sealing and protection.

[0025] The pipeline connection structure in this embodiment mainly includes a first flange 1, a second flange 2, a locking assembly 3, and a protective assembly 5, aiming to achieve a stable pipeline connection. The ends of the two pipelines to be connected are fixed to the first flange 1 and the second flange 2 respectively by welding or other methods. The mating end faces of the first flange 1 and the second flange 2 are tightly fitted, and both end faces have an equal number of fastening holes 4 in corresponding positions, and these holes are evenly distributed. The fastening holes 4 provide the necessary holes for the subsequent bolts 31 to pass through, and ensure that pressure can be effectively and evenly applied between the two flanges, thereby ensuring the sealing and stability of the flange connection. The locking assembly 3 consists of bolts 31 and nuts 32. After the bolts 31 pass through the fastening holes 4 of the first flange 1 and the second flange 2, they are tightened by the nuts 32, thereby ensuring that the pipeline connection is firm and can withstand high pressure and external influences.

[0026] The protective component 5 consists of a first housing 51 and a second housing 52. The housings form internal cavities adapted to the specifications of the first flange 1 and the second flange 2, respectively enclosing them. After enclosing, the housings are fixed by a detachable connection method, such as a snap-fit ​​connection, bolt 31 connection, pin connection, or quick-release connector. An integrated sealing cover 6 is formed at the corresponding bolt 31 and nut 32 positions inside the first housing 51 and the second housing 52. The sealing cover 6 has a sealing cavity that isolates the external environment. When the first housing 51 or the second housing 52 encloses the first flange 1 or the second flange 2, the sealing cover 6 effectively covers the nut 32 and bolt 31 heads, isolating the external environment from direct contact with the locking component 3 and effectively preventing external factors (such as corrosion, pollution, or physical damage) from affecting the nut 32.

[0027] In addition, the first housing 51 and the second housing 52 of the protection component 5 are designed to be detachable. When it is necessary to inspect, disassemble or replace the flange connection parts, the protection component 5 can be easily disassembled and reinstalled, avoiding the inconvenience caused by the protection component 5 being fixed or difficult to remove.

[0028] like Figure 1 or Figure 3As shown, in this embodiment, each fastening hole 4 is surrounded by a first sealing groove 41 adapted to the sealing cover 6, and a first elastic sealing element 42 is provided in the first sealing groove 41. Specifically, the side of the two flanges that are in contact with each other and fit tightly is defined as the mating end face, and the other end face relative to the mating end face is defined as the mounting end face, that is, the end face where the flange connects to the pipe. The first sealing groove 41 is formed around the fastening hole 4 on the mounting end face, and its shape is annular or rectangular, etc., depending on the design of the sealing cover 6. The depth and width of the first sealing groove 41 are matched with the size of the sealing cover 6 to ensure that the sealing cover 6 can be tightly embedded in the groove to form an effective sealing structure. An elastic sealing element is fixedly embedded in the first sealing groove 41 by compression. After the sealing cover 6 is covered by the nut 32, the first elastic sealing element 42 further fills the gap between the sealing cover 6 and the flange to form a double sealing structure. The combined use of the first sealing groove 41 and the first elastic sealing element 42 can effectively prevent external media (such as moisture, dust, and corrosive gases) from seeping into the flange connection part through the fastening hole 4.

[0029] like Figure 1 As shown, a snap-fit ​​assembly 7 is provided between the first housing 51 and the second housing 52 in this embodiment to achieve a detachable fixed connection. Specifically, the snap-fit ​​assembly 7 in this embodiment is a hook-type snap-fit, made of materials such as plastic, metal, or elastic alloy. It consists of multiple slots evenly arranged along the edge of the second housing 52 and matching hooks arranged along the edge of the first housing 51. When connecting, the first housing 51 and the second housing 52 are aligned so that the snap-fit ​​aligns with the slot. By pressing or sliding, the snap-fit ​​is inserted into the slot, completing the fixed connection. This ensures a firm connection between the two housings and allows for detachability, facilitating maintenance and component replacement.

[0030] like Figure 1 and Figure 2 As shown, the end faces of the first housing 51 and the second housing 52 in this embodiment have adjustable through holes 8 for connecting pipes to pass through. Specifically, the outlet holes are radially distributed around the center of the end face of the housing, so that the overall outline of the multiple outlet holes forms a petal-shaped geometric arrangement. Moreover, the petal-shaped housing is made of elastic memory alloy material, plastic, rubber, etc., which allows the position and size of the through holes to be adjustable. It can be adjusted according to the diameter and installation position of different pipes to ensure that the pipes can pass through smoothly and avoid connection difficulties caused by unsuitable pipe sizes.

[0031] Furthermore, the first housing 51 and the second housing 52 are made of high-strength engineering plastics or metal alloys.

[0032] like Figure 3As shown, in this embodiment, the mating end faces of the first flange 1 and the second flange 2 are provided with corresponding second sealing grooves 9, and a second elastic sealing element 10 is provided in the second sealing groove 9. The design of the second sealing groove 9 and the second elastic sealing element 10 can effectively prevent medium leakage, improve the sealing performance of the flange connection, and avoid leakage problems caused by poor sealing.

[0033] The embodiments described above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.

Claims

1. A flange locking connection structure for pipeline engineering, comprising a first flange, a second flange fitted therewith, and a locking assembly, wherein the first flange and the second flange have an equal number of corresponding fastening holes, and the locking assembly includes bolts and nuts, wherein each bolt passes through the fastening holes of the first flange and the second flange and is fastened by the nut. Its features are, It also includes a protective component, which includes a first housing and a second housing detachably and fixedly connected thereto, the first housing and the second housing respectively enclosing the first flange and the second flange; Furthermore, the first and second housings are equipped with sealing covers at the positions of the locking components to cover the nuts for sealing and protection.

2. The flange locking connection structure for pipeline engineering according to claim 1, characterized in that, A first sealing groove adapted to the sealing cover is formed around each of the fastening holes, and a first elastic sealing element is provided in the first sealing groove.

3. The flange locking connection structure for pipeline engineering according to claim 1, characterized in that, A snap-fit ​​assembly is provided between the first housing and the second housing to achieve a detachable fixed connection.

4. The flange locking connection structure for pipeline engineering according to claim 1, characterized in that, The end faces of the first and second housings have adjustable perforations for connecting pipes to pass through.

5. The flange locking connection structure for pipeline engineering according to claim 1, characterized in that, The first and second housings are made of high-strength engineering plastics or metal alloys.

6. A flange locking connection structure for pipeline engineering according to any one of claims 1 to 5, characterized in that, The mating end faces of the first flange and the second flange are provided with corresponding second sealing grooves, and a second elastic sealing element is provided in the second sealing groove.

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