Flange mechanism of pipe fitting

Abstract

The invention relates to a flange mechanism for pipe fittings. The flange mechanism comprises an extending part, a concave part, a convex block, a ring piece for pushing the pipe fittings to be close to each other, a notch formed in the pipe fitting on one side, a pipe barrel formed in the pipe fitting on the other side and a substance arranged in the notch. Wherein the extending parts and the concave parts are alternately formed on the end face of the pipe fitting, and the protruding blocks are formed on the extending parts and the concave parts respectively; when the pipe fittings are connected, the protruding blocks on the extending part and the protruding blocks on the concave part are connected with each other, and the ring piece is inserted between the protruding blocks and pushes the protruding blocks outwards. The pipe barrel is inserted into the notch, a medium in the pipe fitting acts on the substance, and the substance is filled between the pipe barrel and the notch. The problem that in an existing scheme, under the condition that the flange installation space is small, the installation requirement of a metal gasket cannot be met is solved.

Description

Technical Field

[0001] This invention relates to the field of flanges, and more particularly to a flange mechanism for pipe fittings. Background Technology

[0002] The flange structure consists of a pair of flanges welded or integrated onto the ends of the pipe fitting, with rubber sealing rings installed on both flanges to achieve a seal. During installation, tightening the bolt assembly generates a preload, causing the flanges to compress the sealing rings and deform, thus forming a seal to prevent leakage of high-temperature, high-pressure media from the pipe fitting.

[0003] The medium exerts an outward force in the radial direction, and the sealing ring needs to withstand both high temperature and high pressure, leading to severe aging and damage to the sealing ring and requiring frequent replacement. To address this, metal gaskets are used to improve the resistance to the medium. However, this requires the flange to have a uniform and large preload and ensure that the flange sealing surface has sufficient width. When the flange installation space is limited, metal gaskets cannot be used.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a flange mechanism for pipe fittings to solve the problem that the installation requirements of metal gaskets cannot be met when the flange installation space is small.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: A flange mechanism for a pipe fitting; The device includes: an extension, a recess, a protrusion, a ring that pushes the pipe fittings closer together, a groove formed on one side of the pipe fitting, a tube formed on the other side of the pipe fitting, and a substance disposed within the groove; wherein, the extension and the recess are alternately formed on the end face of the pipe fitting, and the protrusion is formed on the extension and the recess respectively; when the pipe fittings are connected, the protrusion on the extension and the protrusion on the recess are connected to each other, the ring is inserted between the protrusions and pushes the protrusions outward; the tube is inserted into the groove, the medium inside the pipe fitting acts on the substance, and the substance fills the space between the tube and the groove.

[0007] A further technical solution includes: a first bolt and a first nut; the first nut is placed inside the protrusion away from the ring, the first bolt passes through the interconnected protrusions and is threaded into the first nut; the ring abuts against the first bolt.

[0008] A further technical solution is that the ring component includes: a second nut, a second bolt, two oppositely arranged half-pieces, two oppositely arranged spring pieces between the half-pieces, and lugs disposed at both ends of the half-pieces; wherein, the second bolt passes through the lugs, and the second nut is threadedly connected to the second bolt; the half-pieces push the protrusions outward; the half-pieces and the spring pieces press the connection position of the tube component.

[0009] A further technical solution is to fill the space between the extension and the recess with powder; cover the pipe connection position with sealing material, press the half-piece with the sealing material, and fuse the sealing material and the powder.

[0010] A further technical solution is to form a contact surface on the tube, so that when the tube is inserted into the groove, a space is formed around the tube; the material fills the space and plugs the space between the tube and the groove.

[0011] A further technical solution is that a ball of yarn is placed inside the groove, and the ball of yarn covers the material; when the tube is inserted into the groove, the material passes through the ball of yarn, and the material and the ball of yarn fill the space, and the material fills the space between the tube and the groove.

[0012] Compared with the prior art, the beneficial technical effects of the present invention are as follows: (1) By inserting the tube into the groove, the medium inside the pipe cannot leak directly in the radial direction. The medium needs to pass between the inner side of the tube and the groove, then between the outer side of the tube and the groove, and then between the extension and the recess before leakage occurs, making the leakage path of the medium longer; by clamping the half-piece, the connection position of the pipe is firm, and the outward force generated by the medium in the radial direction cannot cause leakage. The medium can only flow through the path, and the first seal is formed by filling the path with material, and the second seal is formed by filling the space with thread and material. The sealing material and powder material are fused between the extension and the recess to form a seal. A third seal is formed, and finally a fourth seal is formed by covering with sealing material. This multi-seal structure prevents leakage. The groove is oriented towards the outflow direction of the medium inside the pipe, so that the impact force of the medium flow will not act between the pipe and the groove. Similarly, the radial outward force of the medium will not act between the pipe and the groove. The force generated when the medium flows along the path is small, reducing the risk of leakage. The pipe fittings are brought closer together by the half-pieces, and the half-pieces abut against the first bolt, ensuring the connection of the protrusion and preventing the pipe fitting connection from loosening. This allows the service life of the flange mechanism of the pipe fitting to completely cover the service life of the pipe fitting without the need to replace the sealing elements.

[0013] (2) After the ring is inserted between the protrusions, the thickness of the ring ensures that the ring will not protrude from the protrusions and will not occupy additional installation space of the flange mechanism of the pipe fitting. The pipe fittings on both sides are inserted into each other through the extension and recess, so that the pipe fittings on both sides are connected as a whole. When one side of the pipe fitting vibrates, the other side of the pipe fitting will generate linkage to suppress the vibration. The position of the sleeve on the spring rod is adjusted by rotating the sleeve, thereby adjusting the degree of extension and retraction of the elastic device and adjusting the elastic force of the elastic device to counteract the vibration generated by the pipe fitting.

[0014] (3) The powder material can increase the friction between the extension and the recess, causing the pipe to vibrate and making it less likely for the extension and the recess to loosen. Then, a sealant is applied to cover the pipe connection position, and the sealant is pressed together by the half piece and the spring to complete the shaping of the sealant. Attached Figure Description

[0015] Figure 1 A schematic diagram of the flange mechanism of the pipe fitting according to an embodiment of the present invention is shown.

[0016] Figure 2 It shows Figure 1 A magnified view of the upper middle section.

[0017] Figure 3 It shows Figure 2 Structural diagram of the middle pipe fitting in its separated state.

[0018] Figure 4 It shows Figure 3 A top-view partial structural diagram of the pipe fitting on the right side of the middle section.

[0019] Figure 5 It shows Figure 3 A top-view partial structural diagram of the pipe fitting on the left side.

[0020] Figure 6 A side view of the ring component according to an embodiment of the present invention is shown.

[0021] Figure 7 It shows Figure 6 A magnified view of the structure at the right-middle end.

[0022] Figure 8 A top view of the spring sheet according to an embodiment of the present invention is shown.

[0023] The following labels are used in the attached diagram: 1. Extension; 2. Recess; 3. Protrusion; 31. First groove; 32. Second groove; 33. First bolt; 34. First nut; 35. Cutout; 4. Ring; 41. Half piece; 411. Strip; 412. Limiting plate; 42. Spring; 421. Spring rod; 422. Elastic device; 423. Rod sleeve; 424. Plate opening; 43. Ear; 44. Second bolt; 45. Second nut; 47. Sealing material; 5. Groove; 51. Space; 6. Tube; 7. Material; 71. Coil. Detailed Implementation

[0024] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0025] Figure 1 A schematic diagram of the flange mechanism of a pipe fitting according to an embodiment of the present invention is shown. (In conjunction with...) Figure 1 As shown, the present invention discloses a flange mechanism for a pipe fitting, comprising: an extension 1, a recess 2, a protrusion 3, a ring 4 for pushing the pipe fittings closer to each other, a groove 5 formed on one side of the pipe fitting, a tube 6 formed on the other side of the pipe fitting, and a substance 7 disposed in the groove 5.

[0026] The flange mechanism of the pipe fitting is formed at the connection position of the pipe fitting, and the extension 1 and the recess 2 are alternately formed on the end face of the pipe fitting. When the pipe fitting is connected, the extension 1 and the recess 2 of the two pipe fittings are inserted into each other, the pipe sleeve 6 is inserted into the groove 5, and the groove 5 and the pipe sleeve 6 are smoothly transitioned without significantly increasing the thickness of the pipe fitting connection position.

[0027] The protrusions 3 are formed on the extension 1 and the recess 2 respectively. During pipe connection, the protrusions 3 on the extension 1 and the recess 2 are connected to each other, and the initial connection between the pipes is completed. Then, the ring 4 is inserted between the protrusions 3. As the ring 4 is installed, it pushes the protrusions 3 outward, and the protrusions 3 drive the pipes on both sides to move in opposite directions, so that the pipes on both sides come closer to each other, achieving a tight seal between the pipes. The ring 4 contacts the extension 1 and applies a clamping force to the extension 1, which strengthens the structure at the pipe connection position.

[0028] When the protruding block 3 on extension 1 and the protruding block 3 on recess 2 are connected to each other, the material 7 is relatively soft during installation. It only hardens under high temperature after the medium is introduced into the pipe fitting. Therefore, the protruding block 3 does not need to be widened. The protruding block 3 protrudes a short distance from the pipe fitting surface, occupying minimal installation space in the flange mechanism. After the ring 4 is inserted between the protruding blocks 3, its thickness ensures that it does not protrude beyond the protruding blocks 3, thus not occupying additional installation space in the flange mechanism.

[0029] The tube 6 is inserted into the slot 5, and the tube 6 compresses the material 7. The medium flowing inside the pipe is a high-temperature, high-pressure medium. The high pressure of the material acts on the slot 5 and the tube 6, compressing the material 7, allowing it to fill the space between the tube 6 and the slot 5, sealing the connection and preventing leakage. The high temperature of the medium is transferred to the material 7, and after solidification, the material 7 blocks the space between the tube 6 and the slot 5, ensuring the structural strength between the tube 6 and the slot 5.

[0030] Figure 2 It shows Figure 1 A magnified view of the upper-middle section. (Combined with...) Figure 1 and Figure 2 As shown, the flange mechanism of the pipe fitting also includes a first bolt 33 and a first nut 34. The first nut 34 is placed in the protrusion 3 away from the ring 4, and a first groove 31 is formed on the protrusion 3 away from the ring 4. The shape of the first groove 31 corresponds to the shape of the first nut 34. After the first nut 34 is placed in the first groove 31, the first groove 31 restricts the rotation of the first nut 34.

[0031] A second groove 32 is formed on the protrusion 3 near the ring 4. A first bolt 33 passes through the interconnected protrusions 3, with the bolt head of the first bolt 33 placed in the second groove 32. Then, the first bolt 33 is screwed into the first nut 34. The protrusions 3 are securely connected by tightening the first bolt 33.

[0032] The thickness of the bolt head of the first bolt 33 is the same as the depth of the second groove 32. After the ring 4 is inserted between the protrusions 3, the ring 4 abuts against the first bolt 33. The first nut 34 is restricted by the first groove 31, and the first bolt 33 is abutted by the ring 4, so as to prevent the connection between the first bolt 33 and the first nut 34 from loosening and to ensure a firm connection of the pipe fittings.

[0033] The two pipe fittings are inserted into each other through the extension 1 and the recess 2, so that the two pipe fittings are connected as a whole. When one pipe fitting vibrates, the other pipe fitting will react and suppress the vibration.

[0034] Figure 6 A side view of the ring component according to an embodiment of the present invention is shown. Figure 7 It shows Figure 6 A magnified view of the structure at the right-middle end. Figure 8 A top view of the spring sheet according to an embodiment of the present invention is shown. (In conjunction with...) Figures 6-8As shown, the ring 4 includes: a second nut 45, a second bolt 44, opposing half-pieces 41, opposing spring pieces 42 between the half-pieces 41, and lugs 43 at both ends of the half-pieces 41. The second bolt 44 passes through the lugs 43, and the second nut 45 is threaded onto the second bolt 44. The second nut 45 and the second bolt 44 drive the half-pieces 41 closer together, pushing the protrusions 3 outwards. The half-pieces 41 and the spring pieces 42 then press against the pipe connection position.

[0035] A gap is formed between the opposing halves 41. A spring plate 42 is installed in this gap, with its upper and lower ends contacting the inside of the halves 41. When subjected to force, the end of the spring plate 42 slides within the halves 41. When the halves 41 approach each other, they press against the pipe connection from above and below, while the spring plate 42 presses against the connection from the side. The pipe contains a high-temperature, high-pressure medium, which can cause vibration. Since the spring plate 42 and the halves 41 are not fixedly connected, the spring plate 42 can move, preventing it from breaking under stress.

[0036] A spring rod 421 is provided on the spring piece 42, and an elastic device 422 is sleeved on the spring rod 421. A limiting plate 412 is provided between the half pieces 41, and a groove is formed on the piece lug 43. The two ends of the limiting plate 412 are inserted into the grooves of the half pieces 41. The spring rod 421 passes through the limiting plate 412, and a rod sleeve 423 is threadedly connected to the spring rod 421. For example, the elastic device 422 is a spring. One end of the elastic device 422 abuts against the rod sleeve 423, and the other end of the elastic device 422 abuts against the limiting plate 412.

[0037] The pipe contains a high-temperature, high-pressure medium, which causes vibration. The upper and lower ends of the spring plate 42 are pressed by the half-piece 41, while the middle position of the spring plate 42 is exposed. The middle position of the spring plate 42 is affected by vibration and shakes. The elastic force of the elastic device 422 provides elastic support to the middle position of the spring plate 42 to counteract the vibration generated by the pipe.

[0038] When the flow rate and pressure of the medium change, the vibration of the pipe fittings changes. By rotating the sleeve 423 to adjust its position on the spring rod 421, the extension and retraction of the elastic device 422 are adjusted, and the elastic force of the elastic device 422 is adjusted to cope with the vibration of the pipe fittings at different levels. The vibration of the pipe fittings is eliminated by the elastic device 422, preventing the vibration of the pipe fittings from affecting the curing of the material 7. The material 7 can then be smoothly filled between the tube 6 and the groove 5 and cured.

[0039] Combination Figure 1 and Figure 2As shown, a powdery substance is filled between the extension 1 and the recess 2. For example, the powdery substance is silicon carbide powder. A sealing substance 47 is applied to the pipe connection area. For example, the sealing substance 47 is high-temperature graphite sealant. The sealing substance 47 and the powdery substance fuse together, solidifying to form a hard substance. This hard substance is placed between the extension 1 and the recess 2. During the fusion process, the inorganic binder in the sealing substance 47 encapsulates the powdery substance, initially fixing it through physical adsorption and chemical bonding. The binder undergoes a condensation reaction, and finally, under high-temperature operating conditions, the binder network further densifies, making the pipe connection area a unified whole. The powdery substance increases the friction between the extension 1 and the recess 2, preventing the pipe from vibrating and reducing the likelihood of loosening between the extension 1 and the recess 2. The sealing substance 47 is then applied to cover the pipe connection area, and the sealing substance 47 is pressed together by the half-piece 41 and the spring piece 42, completing the shaping of the sealing substance 47.

[0040] Combination Figure 6 As shown, half-pieces 41 are arranged side-by-side near the extension 1 to form strips 411. The cross-section of strips 411 is arc-shaped, and adjacent strips 411 are transitioned by arcs. The spring piece 42 is in a bent state, and the spring piece 42 corresponds to the shape of strip 411 after bending. The bending position of the spring piece 42 forms a notch 424. After the spring piece 42 is bent, the notch 424 can be narrowed to ensure that the shape of the spring piece 42 after bending can still be bent smoothly.

[0041] The sealing material 47 is inserted and squeezed by the shape of the strip 411 and the spring 42, so that the sealing material 47 solidifies into a wave shape. The sealing material 47, the half strip 41 and the spring 42 are intertwined to complete the position restriction of the sealing material 47. The sealing material 47 can continuously seal the pipe connection position.

[0042] Figure 3 It shows Figure 2 Structural diagram of the middle pipe fitting in its separated state. Figure 4 It shows Figure 3 A top-view partial structural diagram of the pipe fitting on the right side of the middle section. Figure 5 It shows Figure 3 A top-view partial structural diagram of the left-hand pipe fitting. (Combined with...) Figures 3-5 As shown, a contact surface is formed on the tube 6, which is formed on both the inner and outer surfaces of the tube 6, so that when the tube 6 is inserted into the slot 5, a space 51 is formed around the tube 6. After the tube 6 is inserted into the slot 5, the material 7 is first deformed under pressure to fill the space 51, and the material 7 continues to be filled between the tube 6 and the slot 5 under pressure.

[0043] For example, substance 7 is a ceramic precursor polymer-based composite sealing material. Specifically, the ceramic precursor polymer is polysilazane or polycarbosilane. The high-temperature and high-pressure medium flowing inside the pipe causes the ceramic precursor polymer to undergo irreversible pyrolysis and ceramization at high temperatures, giving substance 7 a certain degree of hardness. Specifically, the filler is silicon carbide powder. Silicon carbide can reduce the volume shrinkage of the ceramic precursor polymer during pyrolysis, allowing substance 7 to fill space 51 and avoid leakage risks. Silicon carbide improves the thermal conductivity of substance 7, preventing heat accumulation from affecting coil 71. Specifically, the solvent is xylene or methyl ethyl ketone (MEK). The viscosity of substance 7 is controlled by the solvent, preventing it from diffusing when placed in the groove 5, but allowing it to flow out through coil 71 when under pressure.

[0044] Combination Figure 3 As shown, a coil of wire 71 is placed inside the slot 5, covering the material 7. For example, the coil of wire 71 is made of flexible graphite. When the tube 6 is inserted into the slot 5, the material 7 and the coil of wire 71 are compressed, and the material 7 permeates through the coil of wire 71, filling both the space 51. The coil of wire 71 evenly distributes the material 7 within the space 51. After the material 7 solidifies, internal stress is generated. The process of the material 7 permeating through the coil of wire 71 disperses the material 7, reducing stress generation. The elasticity of the coil of wire 71 also absorbs stress from the material 7. The flow of the medium within the tube compresses the material 7, causing it to fill the space between the tube 6 and the slot 5.

[0045] By inserting the tube 6 into the slot 5, the medium inside the pipe fitting cannot leak directly in the radial direction. The medium must pass between the inside of the tube 6 and the slot 5, then between the outside of the tube 6 and the slot 5, and finally between the extension 1 and the recess 2 before leakage occurs, resulting in a longer leakage path. The clamping of the half-piece 41 ensures a secure connection of the pipe fitting, preventing leakage due to the outward force of the medium in the radial direction. The medium can only flow along the path, forming a first seal by filling the path with the substance 7. A second seal is formed by filling the space 51 with the coil 71 and the substance 7. A third seal is formed by fusing the sealing substance 47 and the powder between the extension 1 and the recess 2. Finally, a fourth seal is formed by covering the space with the sealing substance 47. This multi-seal structure prevents leakage.

[0046] The groove 5 is oriented towards the outflow direction of the medium inside the pipe fitting, so that the impact force of the medium flow will not act between the pipe 6 and the groove 5, and the radial outward force of the medium will also not act between the pipe 6 and the groove 5. When the medium flows along the path, the force generated is small, reducing the risk of leakage.

[0047] By bringing the half-pieces 41 closer together, the pipe fittings move closer together, and the half-pieces 41 also abut against the first bolt 33, ensuring the connection of the protruding blocks 3 and preventing loosening of the pipe fitting connection. This allows the service life of the flange mechanism of the pipe fittings to completely cover the service life of the pipe fittings, without the need for replacement of the sealing elements.

[0048] The protruding block 3 on extension 1 and the protruding block 3 on recess 2 form a slit 35. When it is necessary to disassemble the pipe fitting, the second nut 45 and the second bolt 44 are removed, the half piece 41 is taken off, the sealing material 47 is removed and powdery material is brought out, and an arc-shaped plate with a triangular cross-section is used. The plate is inserted into the slit 35 and pushed into the slit 35 by a hydraulic tool. The plate is pushed outward to separate the protruding block 3 on extension 1 and the protruding block 3 on recess 2 from each other, thus completing the separation of the pipe fitting. Compared with the traditional flange mechanism, the disassembly steps of the flange mechanism of the pipe fitting in this application add the steps of scraping off the sealing material 47 and inserting the plate into the slit 35, but the operation does not require additional space, and the flange mechanism of the pipe fitting does not require periodic replacement of the sealing element.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A flange mechanism of a pipe fitting, characterized by, The utility model relates to a kind of pipe fittings, including: Extension (1), recess (2), convex block (3), ring (4) of pushing pipe fitting each other, notch (5) formed in one side pipe fitting, tube cylinder (6) formed in another side pipe fitting and substance (7) arranged in the notch (5);Wherein, the extension (1) and the recess (2) are alternately formed in pipe fitting end face, the convex block (3) is formed on the extension (1) and the recess (2) respectively;Pipe fitting connects, the convex block (3) on the extension (1) and the convex block (3) on the recess (2) are connected with each other, the ring (4) is inserted between the convex block (3) and pushes out the convex block (3) outward;The substance (7) is ceramic precursor polymer-based composite sealing material, the tube cylinder (6) is inserted into the notch (5), and the medium in pipe fitting acts on the substance (7), and the substance (7) is filled between the tube cylinder (6) and the notch (5) and solidifies.

2. A pipe flange mechanism according to claim 1, wherein Also includes: First bolt (33) and first nut (34);The first nut (34) is placed in the convex block (3) away from the ring (4), and the first bolt (33) passes through the convex block (3) connected with each other and is screwed into the first nut (34);The ring (4) is against the first bolt (33).

3. The flange mechanism of a pipe as defined in claim 2, wherein The ring (4) includes: second nut (45), second bolt (44), oppositely arranged half piece (41), spring piece (42) oppositely arranged between the half piece (41) and piece ear (43) arranged at both ends of the half piece (41);Wherein, the second bolt (44) passes through the piece ear (43), and the second nut (45) is threadedly connected on the second bolt (44);The half piece (41) pushes the convex block (3) outward;The half piece (41) and the spring piece (42) are pressed tightly at pipe fitting connection position.

4. The flange mechanism of a pipe as defined in claim 3, wherein Powder substance is filled between the extension (1) and the recess (2);Pipe fitting connection position is covered with sealing substance (47), and the half piece (41) is pressed together with the sealing substance (47), and the sealing substance (47) and powder substance are fused.

5. The pipe flange mechanism of claim 2 wherein, Contact surface is formed on the tube cylinder (6), so that when the tube cylinder (6) is inserted into the notch (5), space (51) is formed around the tube cylinder (6);The substance (7) fills the space (51) and is filled between the tube cylinder (6) and the notch (5).

6. A pipe flange mechanism according to claim 5, wherein The notch (5) is placed in the skein (71), and the skein (71) covers the substance (7);When the tube cylinder (6) is inserted into the notch (5), the substance (7) penetrates the skein (71), the substance (7) and the skein (71) fill the space (51), and the substance (7) is filled between the tube cylinder (6) and the notch (5).

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