A high-strength flange connection structure

Abstract

The present disclosure relates to the technical field of high-strength flange connection structure, and one embodiment of the present disclosure provides a high-strength flange connection structure, which comprises a pair of butt flanges and a pair of pipes, the butt flanges are arranged between the pipes, a compression sleeve is sleeved outside the butt flanges, a butt sealing assembly is arranged between the butt flanges and the compression sleeve, and an anti-disengagement assembly is arranged between the pipes and the butt flanges; the butt sealing assembly comprises a pair of splicing grooves, the splicing grooves are respectively arranged on the side surfaces of the pair of butt flanges, the side surfaces of the butt flanges are provided with convex layers, and the convex layers are inserted into the splicing grooves. Through the above technical scheme, the technical problem that the conventional flange connection in the prior art relies on simple bolt fastening, the number and layout design of the bolts are not reasonable enough, and these external forces cannot be fully dispersed is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of high-strength flange connection structure technology, and more specifically, to a high-strength flange connection structure. Background Technology

[0002] In modern industry, flange connections are widely used in the connection of various pipelines and equipment, and are a key link to ensure the stable operation of the system. From petrochemicals and energy transmission to water supply and drainage systems, many industries rely on flange connections to achieve reliable connections between components. However, existing flange connection structures have many problems in practical use, especially low connection strength and easy bending at the connection points, which seriously affect the safety and stability of industrial production.

[0003] On the one hand, traditional flange connections have relatively low strength. In actual working conditions, pipelines and equipment often bear various complex forces, such as the pressure of the internal medium, vibrations from the external environment, and thermal stress caused by temperature changes. Traditional flange connections rely mainly on simple bolt tightening, and the number and layout of bolts are not well-designed, failing to adequately distribute these external forces. Over time and with the continuous action of external forces, the bolts are prone to loosening, the sealing performance between flanges deteriorates, and this leads to media leakage. In some systems transporting flammable, explosive, or toxic and hazardous media, leakage can cause serious safety accidents, threatening personnel lives, causing environmental pollution, and resulting in huge economic losses.

[0004] On the other hand, bending is prone to occur at the joints. Due to the limitations of the flange's structural design, the flange joint lacks rigidity when subjected to large bending moments or torques. For example, in some large pipeline systems, when the pipeline is subjected to forces from different directions, the flange joint cannot effectively resist these external forces and is prone to bending deformation. This bending not only damages the seal between the flanges but may also affect the overall structural stability of the pipeline and equipment, significantly reducing the reliability of the entire system. Long-term bending deformation also accelerates the wear of flanges and related components, shortens the service life of equipment, increases maintenance costs and downtime, and restricts the company's production efficiency and economic benefits.

[0005] With the increasing demands for equipment reliability and safety in industrial production, the development of a high-strength flange connection structure capable of effectively resisting bending deformation is urgently needed. This is of significant practical importance for ensuring the safe and efficient operation of industrial production, reducing maintenance costs, and promoting the sustainable development of various industries. Utility Model Content

[0006] To overcome the above-mentioned defects, the embodiments of this disclosure provide a high-strength flange connection structure, which solves the technical problem that traditional flange connections in the prior art rely on simple bolt fastening, and the bolt quantity and layout design are not reasonable enough, making it impossible to fully disperse these external forces.

[0007] According to one aspect, at least one embodiment of this disclosure provides a high-strength flange connection structure, comprising:

[0008] A pair of mating flanges and a pair of pipes, wherein the mating flanges are disposed between the pipes;

[0009] A pair of clamping sleeves and a mating sealing assembly, wherein the clamping sleeves are fitted over the outside of the mating flange, and the mating sealing assembly is disposed between the mating flange and the clamping sleeves;

[0010] An anti-detachment component is disposed between the pipe and the mating flange;

[0011] The mating sealing assembly includes a pair of splicing grooves, which are respectively formed on the side surfaces of the pair of mating flanges. The side surfaces of the mating flanges are provided with raised layers, which are inserted into the splicing grooves.

[0012] As a further technical solution, a number of studs are arranged around the surface of the mating flange. The studs are all inserted into the clamping sleeve, with one end of the stud located outside the clamping sleeve and a nut screwed onto one end of the stud.

[0013] As a further technical solution, the anti-detachment component includes an inner groove, which is formed on the inner surface of the compression sleeve. The pipe is fitted between the outside of the docking flange and the inner groove, and an outer ring layer is provided around the outer surface of the compression sleeve.

[0014] As a further technical solution, an external thread layer is formed around the outer surface of the outer ring layer, and a pair of fixing sleeves are fitted on the outside of the pipe. The fixing sleeves are fixedly connected by bolts, and an external groove is formed on the surface of the fixing sleeve.

[0015] As a further technical solution, the fixed sleeve is fitted with an internally threaded tube, which is connected to the externally threaded layer by screwing. One end of the internally threaded tube is bent inward, and the bent part of the internally threaded tube is fitted into the outer groove.

[0016] As a further technical solution, the outer end face of the mating flange and the right angle of the inner surface of the clamping sleeve are both inclined transition structures.

[0017] As a further technical solution, both the splicing groove and the protrusion are annular structures.

[0018] As a further technical solution, the clamping sleeve has a groove inside, and a bolt is screwed into the groove. A pressure block is rotatably connected to the lower end of the bolt.

[0019] The beneficial effects of the embodiments disclosed herein are as follows:

[0020] 1. The beneficial effect of the mating sealing assembly in this disclosure is that the interlocking groove and the raised layer cooperate with each other, increasing the contact area between the mating flanges, making the connection tighter and the fit higher. The annular interlocking groove and the raised layer can form an effective sealing barrier to prevent media leakage. The studs and nuts on the surface of the mating flange fix the compression sleeve to the mating flange, and the pressure generated by tightening the nuts further compresses the sealing part of the mating flange. In addition, the inclined transition structure at the right angle of the outer end face of the mating flange and the inner surface of the compression sleeve increases the tightness of the fit, significantly improving the sealing performance and stability of the entire connection structure, and effectively avoiding media leakage problems caused by poor sealing.

[0021] 2. In this disclosure, the anti-detachment component has significant advantages. The inner groove on the inner surface of the clamping sleeve provides initial positioning for the pipeline, preventing it from moving freely on the connecting flange. The outer ring layer and the outer thread layer on the outer surface of the clamping sleeve work in conjunction with the fixing sleeve and the internally threaded pipe on the outside of the pipeline. The fixing sleeve is bolted to firmly secure the pipeline, enhancing the stability of the pipeline connection. The threaded connection between the internally threaded pipe and the external thread layer, as well as the fit between the bent portion of the internally threaded pipe and the outer groove of the fixing sleeve, make the fixing sleeve, the internally threaded pipe, and the clamping sleeve form a stable whole. When the pipeline is subjected to external forces, especially bending forces, this integrated structure can effectively disperse and resist external forces, strengthen the pipeline support, greatly improve the pipeline's bending resistance, prevent the pipeline from falling off or deforming due to stress, and ensure the safe and stable operation of the pipeline system. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure;

[0024] Figure 2 This is an isometric sectional view of the present disclosure;

[0025] Figure 3 This is another isometric sectional view of this disclosure;

[0026] Figure 4 Appendix to this disclosure Figure 3 Enlarged view of part A in the middle;

[0027] In the diagram: 1. Connecting flange; 2. Pipe; 3. Compression sleeve; 4. Connecting sealing assembly; 4-1. Joint groove; 4-2. Raised layer; 4-3. Stud; 4-4. Nut; 5. Anti-loosening assembly; 5-1. Inner groove; 5-2. Outer ring layer; 5-3. External thread layer; 5-4. Fixing sleeve; 5-5. Outer groove; 5-6. Internal threaded pipe; 6. Groove; 7. Bolt; 8. Pressure block. Detailed Implementation

[0028] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0029] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0030] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" 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 disclosure based on the specific circumstances.

[0031] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] like Figures 1-4 As shown, it illustrates a high-strength flange connection structure according to an embodiment of the present disclosure, comprising:

[0035] A pair of mating flanges 1 and a pair of pipes 2, wherein the mating flanges 1 are disposed between the pipes 2;

[0036] A pair of clamping sleeves 3 and a mating sealing assembly 4, wherein the clamping sleeves 3 are fitted onto the outside of the mating flange 1, and the mating sealing assembly 4 is disposed between the mating flange 1 and the clamping sleeves 3;

[0037] Anti-detachment component 5, wherein the anti-detachment component 5 is disposed between the pipe 2 and the docking flange 1;

[0038] The mating sealing assembly 4 includes a pair of splicing grooves 4-1, which are respectively opened on the side surfaces of the pair of mating flanges 1. The side surfaces of the mating flanges 1 are provided with raised layers 4-2, which are inserted into the splicing grooves 4-1. A plurality of studs 4-3 are provided around the surface of the mating flanges 1. The studs 4-3 are all inserted into the compression sleeve 3. One end of the stud 4-3 is located outside the compression sleeve 3, and a nut 4-4 is screwed to one end of the stud 4-3.

[0039] In some examples, during the connection of pipe 2, a butt sealing assembly 4 is designed to ensure the sealing and stability of the connection. This assembly includes splicing grooves 4-1 respectively opened on the side surfaces of a pair of butt flanges 1, which cooperate with the protrusions 4-2 on the side surfaces of the butt flanges 1. The protrusions 4-2 are inserted into the splicing grooves 4-1 to form a preliminary butt structure, which enhances the fit and sealing between the flanges. Several studs 4-3 are arranged around the surface of the butt flanges 1 and are inserted into the compression sleeve 3. One end of the studs 4-3 extends to the outside of the compression sleeve 3 and is screwed with a connecting nut 4-4. By tightening the nut 4-4, the compression sleeve 3 can be tightly fixed to the butt flanges 1, further compressing the sealing part between the butt flanges 1, effectively preventing gas or liquid leakage, and achieving a stable and sealed connection between pipes 2.

[0040] Through the coordinated work of components such as splicing groove 4-1, protrusion 4-2, stud 4-3 and nut 4-4, the docking sealing assembly 4 achieves a reliable connection of pipe 2.

[0041] like Figures 1-4 As shown in the figure, the anti-detachment component 5 in this embodiment includes an inner groove 5-1, which is formed on the inner surface of the clamping sleeve 3. The pipe 2 is fitted between the outside of the docking flange 1 and the inner groove 5-1. An outer ring layer 5-2 is provided around the outer surface of the clamping sleeve 3. An external thread layer 5-3 is formed around the outer surface of the outer ring layer 5-2. A pair of fixing sleeves 5-4 are fitted around the outside of the pipe 2. The fixing sleeves 5-4 are fixedly connected by bolts 7. An outer groove 5-5 is formed on the surface of the fixing sleeve 5-4. An internal threaded pipe 5-6 is fitted around the outside of the fixing sleeve 5-4. The internal threaded pipe 5-6 is connected to the external thread layer 5-3 by screwing. One end of the internal threaded pipe 5-6 is bent inward, and the bent part of the internal threaded pipe 5-6 is fitted inside the outer groove 5-5.

[0042] In some examples, to ensure the stability of the pipe 2 connection, an anti-detachment component 5 is designed to enhance the support capacity and bending resistance of the pipe 2. This component includes an inner groove 5-1 formed on the inner surface of the clamping sleeve 3. The pipe 2 is fitted between the outside of the mating flange 1 and the inner groove 5-1, forming a preliminary limiting structure. The protrusion 4-2 and the external thread layer 5-3 on the outer surface of the clamping sleeve 3 cooperate with a pair of fixing sleeves 5-4 and an internally threaded pipe 5-6 fitted on the outside of the pipe 2. The pair of fixing sleeves 5-4 are fixedly connected by bolts 7, which serve to fix the pipe 2. The surface of the fixing sleeves 5-4 is open The outer groove 5-5 is designed to mate with the inner threaded tube 5-6. The inner threaded tube 5-6 is connected to the outer threaded layer 5-3 by screwing. One end of the inner threaded tube 5-6 is bent inward and fitted into the outer groove 5-5. This structure can tightly connect the fixing sleeve 5-4, the inner threaded tube 5-6 and the clamping sleeve 3 together to form a stable whole. When the pipe 2 is subjected to external force, especially bending force, the anti-detachment component 5 can effectively disperse and resist the external force, strengthen the support of the pipe 2, improve the bending resistance of the pipe 2, prevent the pipe 2 from falling off or deforming due to force, and ensure the safe and stable operation of the pipe 2 system.

[0043] Through the coordinated work of components such as inner groove 5-1, convex layer 4-2, external thread layer 5-3, fixing sleeve 5-4, bolt 7, outer groove 5-5, and internal thread pipe 5-6, the anti-detachment component 5 achieves the function of reinforcing the support of pipe 2 and improving its bending resistance.

[0044] For example, such as Figure 2 As shown, the outer end face of the mating flange 1 and the right angle of the inner surface of the clamping sleeve 3 are both inclined transition structures.

[0045] In some examples, a slanted transition structure can increase the tightness and strength of the fit.

[0046] For example, such as Figure 2 As shown, both the splicing groove 4-1 and the protrusion 4-2 are annular structures.

[0047] In some examples, a ring-shaped structure can be used to form a sealing layer, increasing the sealing strength of the connection between the mating flanges 1.

[0048] For example, such as Figure 4 As shown, the clamping sleeve 3 has a groove 6 inside, and a bolt 7 is screwed into the groove 6. A pressure block 8 is rotatably connected to the lower end of the bolt 7.

[0049] In some examples, bolt 7 can drive pressure block 8 to press against the surface of mating flange 1, forming internal support force, which, together with the external fixing structure, further enhances the stability effect.

[0050] In actual use: First, put the two mating flanges 1 onto the two pipes 2 to be connected, carefully align them, and insert the protrusion 4-2 of one mating flange 1 into the splicing groove 4-1 of the other mating flange 1 to initially complete the connection. Then, put the compression sleeve 3 on the outside of the mating flange 1, ensuring that all the studs 4-3 around the surface of the mating flange 1 are accurately inserted into the compression sleeve 3. Then, screw the nut 4-4 onto the end of the stud 4-3 located outside the compression sleeve 3, and gradually tighten the nut 4-4 to make the compression sleeve 3 tightly fixed on the mating flange 1, and enhance the sealing of the connection. After that, put the pipe 2 between the outside of the mating flange 1 and the inner groove 5-1 on the inner surface of the compression sleeve 3. Put a pair of fixing sleeves 5-4 on the pipe 2 and use bolts 7 to fix them together. Then, put the internal threaded pipe 5-6 on the outside of the fixing sleeve 5-4, and screw it to the external thread layer 5-3 on the outer surface of the compression sleeve 3. Accurately embed the bent part of the internal threaded pipe 5-6 into the outer groove 5-5 on the surface of the fixing sleeve 5-4.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A high-strength flange connection structure, characterized in that, include: A pair of mating flanges (1) and a pair of pipes (2), wherein the mating flanges (1) are disposed between the pipes (2); A pair of clamping sleeves (3) and a mating sealing assembly (4), wherein the clamping sleeves (3) are fitted onto the outside of the mating flange (1), and the mating sealing assembly (4) is disposed between the mating flange (1) and the clamping sleeves (3); Anti-detachment component (5), wherein the anti-detachment component (5) is disposed between the pipe (2) and the docking flange (1); The mating sealing assembly (4) includes a pair of splicing grooves (4-1), which are respectively opened on the side surfaces of a pair of mating flanges (1). The side surfaces of the mating flanges (1) are provided with protrusions (4-2), which are inserted into the splicing grooves (4-1).

2. The high-strength flange connection structure according to claim 1, characterized in that, The mating flange (1) has several studs (4-3) arranged around its surface. The studs (4-3) are all inserted into the clamping sleeve (3). One end of the stud (4-3) is located outside the clamping sleeve (3), and a nut (4-4) is screwed to the other end of the stud (4-3).

3. The high-strength flange connection structure according to claim 1, characterized in that, The anti-detachment component (5) includes an inner groove (5-1), which is formed on the inner surface of the compression sleeve (3). The pipe (2) is fitted between the outside of the docking flange (1) and the inner groove (5-1). An outer ring layer (5-2) is provided around the outer surface of the compression sleeve (3).

4. The high-strength flange connection structure according to claim 3, characterized in that, The outer ring layer (5-2) has an external thread layer (5-3) around its outer surface. The pipe (2) is fitted with a pair of fixing sleeves (5-4). The fixing sleeves (5-4) are fixedly connected by bolts (7). The surface of the fixing sleeves (5-4) has an external groove (5-5).

5. A high-strength flange connection structure according to claim 4, characterized in that, The fixing sleeve (5-4) is fitted with an internally threaded tube (5-6), which is connected to the externally threaded layer (5-3) by screwing. One end of the internally threaded tube (5-6) is bent inward, and the bent part of the internally threaded tube (5-6) is fitted into the outer groove (5-5).

6. A high-strength flange connection structure according to claim 1, characterized in that, The outer end face of the mating flange (1) and the inner surface of the clamping sleeve (3) at right angles are both inclined transition structures.

7. A high-strength flange connection structure according to claim 1, characterized in that, Both the splicing groove (4-1) and the protrusion (4-2) are annular structures.

8. A high-strength flange connection structure according to claim 1, characterized in that, The clamping sleeve (3) has a groove (6) inside, and a bolt (7) is screwed into the groove (6) by thread. A pressure block (8) is rotatably connected to the lower end of the bolt (7).

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