Rotary flange
By adopting single-head rotary flange design and hot melt gel layer sealing technology, the problems of traditional double-head rotary flange are easily leaked and difficult to repair in high-pressure environments, achieving higher stability and lower cost of use.
Patent Information
- Application Number
- CN202422363390.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-27
AI Technical Summary
Traditional double-head rotary flanges are prone to leakage in high-pressure environments, have a short service life and are difficult to repair, resulting in frequent replacement and high cost of use.
The single-head rotary flange design is adopted. Through the combination of a fixed flange and a rotatable flange, the installation end cap is bonded to the pipe body with a hot melt gel layer to achieve sealing connection, and the maintenance process is simplified by heating and disassembly design.
Improves the stability and service life of the rotary flange, reduces the cost of repair and replacement, and simplifies the repair process.
Smart Images
Figure CN223019685U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline connection, and particularly relates to a rotating flange. Background Art
[0002] In industries such as chemical engineering and petroleum, pipelines need to be connected to equipment interfaces at various different angles to achieve the transportation and distribution of fluids. The rotating flange can conveniently adjust the angle of the pipeline to meet the requirements of equipment connection. In some occasions where pipeline maintenance and repair are required, the rotating flange can enable the pipeline to rotate within a certain range, facilitating the operation of workers and improving work efficiency. In some occasions with limited space, the rotating flange can adjust the position of the pipeline by rotating to avoid interference with other equipment or structures.
[0003] Currently, the traditional rotating flange adopts a double-headed rotating flange design. Both ends of the double-headed rotating flange rely on threads to ensure the overall connection reliability. However, in a long-term harsh working environment, due to its own structural characteristics, the double-headed rotating flange is prone to leakage under high-pressure conditions, has a short service life, and the rotating flange end cover is closed by welding, making it difficult to repair later. Frequent replacement increases the use cost. Summary of the Utility Model
[0004] To overcome the deficiencies of the above-mentioned prior art, the utility model provides a rotating flange, which solves the technical problems of difficult maintenance and high use cost due to frequent replacement after the rotating flange is damaged.
[0005] To achieve the above object, the utility model is realized through the following technical solutions:
[0006] A rotating flange includes: a pipe body, a pair of fluid ports, the pair of fluid ports are respectively arranged at both ends of the pipe body, a pair of flange plates, and a mounting end cover. The pair of flange plates are respectively sleeved at both ends of the pipe body. The pair of flange plates include: a fixed flange plate and a rotatable flange plate. The fixed flange plate is sleeved and installed at the end of the pipe body. The rotatable flange plate is rotatably sleeved and installed at one end of the pipe body away from the fixed flange plate. A convex portion is convexly provided on the outer circumference along the circumferential direction on the side of the pipe body away from the fixed flange plate. An inner wall of the rotatable flange plate near the fixed flange plate is provided with a first annular notch corresponding to the convex portion. The first annular notch is used to accommodate the convex portion to axially limit the rotatable flange plate. An inner wall of the rotatable flange plate away from the fixed flange plate is provided with an annular receiving cavity corresponding to the mounting end cover. The mounting end cover is arranged in the annular receiving cavity. The mounting end cover is sleeved on the pipe body. The mounting end cover is threadedly and sealedly connected to the pipe body. A hot melt gel layer is covered at the threaded connection position of the mounting end cover and the pipe body. The hot melt gel layer is arranged along the circumferential direction of the pipe body.
[0007] Based on the above structure, the principle of the rotary flange is as follows: A single-head rotary flange design is adopted. The fixed flange is fixedly installed on the outer side of the pipe body. The rotatable flange is rotatably sleeved at one end of the pipe body away from the fixed flange. The convex part cooperates with the mounting end cover to achieve axial limitation of the rotatable flange, so that the rotatable flange cannot move towards or away from the fixed flange. The hot-melt gel layer is used for sealing the threaded connection position between the mounting end cover and the pipe body, and bonds the mounting end cover and the pipe body into a whole. First, evenly apply the hot-melt gel layer circumferentially on the internal thread at the connection position between the mounting end cover and the pipe body. Then, within 3 minutes, screw the mounting end cover in place. Then place the pipe body horizontally and let it stand for 24 hours to wait for the hot-melt gel layer to cure. After the hot-melt gel layer is cured, the sealed connection between the mounting end cover and the pipe body is completed. The hot-melt gel layer is a gelling material that can be melted when heated. Such a design is for when the rotary flange is damaged, directly heat the connection position between the mounting end cover and the pipe body, and the hot-melt gel layer melts, then the mounting end cover can be unscrewed and removed from the pipe body. Then remove the rotatable flange, and the internal repair of the rotary flange can be carried out, reducing the use cost of the rotary flange.
[0008] Furthermore, in a rotary flange of the present application, a set of through holes are respectively provided on a pair of the flange plates. The set of through holes are evenly arranged along the circumference of the flange plate, and the set of through holes axially penetrate the flange plate. As a preferred solution of the present application, the through holes in a rotary flange of the present application are used to install bolts to connect the rotary flange with the pipeline to be connected together.
[0009] Furthermore, in a rotary flange of the present application, at least one annular groove is respectively provided on both end faces of the pipe body. The cross section of the annular groove is trapezoidal, and the annular grooves are evenly arranged along the radial direction of the pipe body. As a preferred solution of the present application, the annular grooves in a rotary flange of the present application are used to install sealing rings to ensure the tightness of the connection position when the flange is connected to other pipelines. When it is necessary to ensure the connection seal between the flange and other pipelines, multiple annular grooves can be added. The multiple annular grooves are evenly arranged along the radial direction of the pipe body, and the cross section of the annular groove is trapezoidal. Such a design can better fix the sealing ring and prevent it from falling off during use.
[0010] Furthermore, a rotary flange of the present application further includes: a rolling bearing. The rolling bearing is sleeved on the pipe body, and the rolling bearing abuts against the side surface of the convex part axially on the pipe body. The rolling bearing is installed on the rotatable flange. As a preferred solution of the present application, the rolling bearing in a rotary flange of the present application is used for the smoothness and flexibility when the rotatable flange rotates, reducing the wear when the rotatable flange and the pipe body rotate relative to each other, and improving the service life of the rotary flange.
[0011] Furthermore, a rotating flange in the present application further includes: a set of steel balls. One end face of the convex part away from the fixed flange is provided with a first annular installation groove. The inner wall of the first annular notch is provided with a second annular installation groove adapted to the first annular installation groove. The cross-sections of the first annular installation groove and the second annular installation groove are both semi-circular shapes adapted to the shape of the steel balls. When the first annular installation groove and the second annular installation groove are buckled together, a set of the steel balls are installed between the first annular installation groove and the second annular installation groove, and a set of the steel balls are in rolling fit between the first annular installation groove and the second annular installation groove. As a preferred solution of the present application, the steel balls in a rotating flange of the present application cooperate with a rolling bearing to reduce the rotational wear between the rotatable flange and the pipe body and extend the service life of the rotating flange; the first annular installation groove and the second annular installation groove cooperate to form a rolling track for a set of steel balls.
[0012] Furthermore, in a rotating flange of the present application, gaps are provided between the convex part and the rotatable flange, between the rotatable flange and the mounting end cover, and between the mounting end cover and the rolling bearing. The gaps extend along the circumferential direction of the pipe body. As a preferred solution of the present application, in a rotating flange of the present application, gaps are provided between the convex part and the rotatable flange, between the rotatable flange and the mounting end cover, and between the mounting end cover and the rolling bearing. The gaps between the convex part and the rotatable flange and between the rotatable flange and the mounting end cover are to ensure the smooth rotation of the rotatable flange and prevent the rotatable flange from getting stuck during rotation; the gap between the mounting end cover and the rolling bearing is to ensure the smooth rotation of the rolling bearing.
[0013] Furthermore, in a rotating flange of the present application, one end of the mounting end cover away from the fixed flange is provided with a first annular convex part, and the first annular convex part extends radially outward along the inner circle of the mounting end cover. As a preferred solution of the present application, the first annular convex part in a rotating flange of the present application is used to indicate whether the installation position of the mounting end cover is accurate. When the end face of the first annular convex part away from the fixed flange is flush with the end face of the pipe body away from the fixed flange, the positioning of the installation position of the mounting end cover is completed.
[0014] Furthermore, in a rotating flange of the present application, a second annular notch is provided on the side of the mounting end cover close to the fixed flange, and a second annular convex part adapted to the second annular notch is convexly provided on the inner wall of the rotatable flange. The second annular convex part is used to accommodate the second annular notch and axially limit the rotatable flange. As a preferred solution of the present application, in a rotating flange of the present application, the convex part cooperates with the second annular notch to axially limit the rotatable flange, so that the rotatable flange does not undergo axial displacement during rotation.
[0015] From the above technical solutions, the following beneficial effects can be seen in the present utility model:
[0016] A rotating flange in the present application, through the design of a single-headed rotating flange, has a simpler structure, fewer vulnerable parts, and higher stability compared with the traditional double-headed rotating flange; the mounting end cover is thread-sealed and connected to the pipe body, and the mounting end cover and the pipe body are bonded into a whole through a hot-melt gel layer, which not only prevents the thread between the mounting end cover and the pipe body from loosening but also seals the thread connection position. During later maintenance, by heating the thread connection position between the mounting end cover and the pipe body, the hot-melt gel layer is heated and melted, and then the mounting end cover is screwed off from the pipe body. Then, the rotatable flange is removed, and the internal maintenance of the rotating flange can be carried out to replace damaged parts, without replacing the entire rotating flange, so as to reduce its use cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic cross-sectional structure view of a rotating flange in an embodiment of the present application;
[0018] Figure 2 is Figure 1 a partial enlarged view of the area of the circle A in
[0019] Figure 3 is a schematic cross-sectional structure view of a pipe body in a rotating flange in an embodiment of the present application;
[0020] Figure 4 is a schematic cross-sectional structure view of a rotatable flange in a rotating flange in an embodiment of the present application;
[0021] Figure 5 is a schematic cross-sectional structure view of a mounting end cover in a rotating flange in an embodiment of the present application.
[0022] In the figure: 1 - pipe body; 10 - annular groove; 11 - convex part; 110 - first annular mounting groove; 2 - fluid passage opening; 3 - flange; 30 - through hole; 31 - fixed flange; 32 - rotatable flange; 320 - first annular notch; 3200 - second annular mounting groove; 321 - annular receiving cavity; 322 - second annular convex part; 4 - mounting end cover; 40 - second annular notch; 41 - first annular convex part; 5 - rolling bearing; 6 - steel ball; 7 - hot-melt gel layer; 8 - gap. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Such as Figure 1 、 2As shown in the figure, a rotating flange includes: a pipe body 1, a pair of fluid ports 2, and a pair of the fluid ports 2 are respectively arranged at both ends of the pipe body 1, a pair of flange plates 3, and a mounting end cover 4. A pair of the flange plates 3 are respectively sleeved at both ends of the pipe body 1. The pair of flange plates 3 include: a fixed flange plate 31 and a rotatable flange plate 32. The fixed flange plate 31 is sleeved and installed at the end of the pipe body 1. The rotatable flange plate 32 is rotatably sleeved and installed at one end of the pipe body 1 away from the fixed flange plate 31. A circular convex portion 11 protrudes outward along the circumferential direction on one side of the pipe body 1 away from the fixed flange plate 31. An inner wall of the rotatable flange plate 32 near the fixed flange plate 31 is provided with a first annular notch 320 corresponding to the convex portion 11. The first annular notch 320 is used to accommodate the convex portion 11 to axially limit the rotatable flange plate 32. An inner wall of the rotatable flange plate 32 away from the fixed flange plate 31 is provided with an annular receiving cavity 321 corresponding to the mounting end cover 4. The mounting end cover 4 is arranged in the annular receiving cavity 321. The mounting end cover 4 is sleeved on the pipe body 1. The mounting end cover 4 is in threaded sealing connection with the pipe body 1. A hot-melt gel layer 7 is covered at the threaded connection position between the mounting end cover 4 and the pipe body 1. The hot-melt gel layer 7 is arranged along the circumferential direction of the pipe body 1.
[0024] Based on the above structure, the principle of the rotating flange is as follows: A single-head rotating flange design is adopted. The fixed flange plate 31 is fixedly installed on the outside of the pipe body 1. The rotatable flange plate 32 is rotatably sleeved and installed at one end of the pipe body 1 away from the fixed flange plate 31. The convex portion 11 and the mounting end cover 4 cooperate to axially limit the rotatable flange plate 32, so that the rotatable flange plate 32 cannot move in the direction of approaching or departing from the fixed flange plate 31. The hot-melt gel layer 7 is used for sealing the threaded connection position between the mounting end cover 4 and the pipe body 1, and bonding the mounting end cover 4 and the pipe body 1 into a whole. First, the hot-melt gel layer 7 is evenly applied to the inner thread in the circumferential direction at the connection position between the mounting end cover 4 and the pipe body 1. Then, within 3 minutes, the mounting end cover 4 is screwed in place. Then, the pipe body 1 is placed horizontally and left standing for 24 hours to wait for the hot-melt gel layer 7 to cure. After the hot-melt gel layer 7 is cured, the sealed connection between the mounting end cover 4 and the pipe body 1 is completed. The hot-melt gel layer 7 is a gelling material that can be melted when heated. Such a design is for when the rotating flange is damaged, directly heating the connection position between the mounting end cover 4 and the pipe body 1, and the hot-melt gel layer 7 is melted by heat, then the mounting end cover 4 can be screwed off from the pipe body 1. Then, the rotatable flange plate 32 is removed, and the internal repair of the rotating flange can be carried out, reducing the use cost of the rotating flange. The fixed flange plate 31 is welded and installed on the pipe body 1. The hot-melt gel layer 7 adopts AB glue, and the AB glue is applied to the inner thread at the threaded connection position between the mounting end cover 4 and the pipe body 1.
[0025] In this embodiment, a set of through holes 30 are respectively provided on a pair of the flange plates 3. A set of the through holes 30 are arranged uniformly along the circumferential direction of the flange plate 3, and a set of the through holes 30 penetrate through the flange plate 3 axially. The through holes 30 are used for installing bolts to connect the rotating flange with the pipeline to be connected.
[0026] In this embodiment, at least one annular groove 10 is respectively provided on both end faces of the pipe body 1. The cross section of the annular groove 10 is trapezoidal, and the annular grooves 10 are arranged uniformly along the radial direction of the pipe body 1. The annular grooves 10 are used for installing sealing rings to ensure the tightness of the connection position when the flange is connected to other pipelines. When it is necessary to ensure the sealing of the connection between the flange and other pipelines, multiple annular grooves 10 can be added. The multiple annular grooves 10 are arranged uniformly along the radial direction of the pipe body 1, and the cross section of the annular groove 10 is trapezoidal. Such a design can better fix the sealing ring and prevent it from falling off during use. One annular groove 10 is respectively provided on both end faces of the pipe body 1.
[0027] In this embodiment, it further includes: a rolling bearing 5. The rolling bearing 5 is sleeved on the pipe body 1. The rolling bearing 5 abuts against the side surface of the convex portion 11 axially on the pipe body 1, and the rolling bearing 5 is installed on the rotatable flange plate 32. The rolling bearing 5 is used for the smoothness and flexibility of the rotation of the rotatable flange plate 32, reduces the wear when the rotatable flange plate 32 rotates relative to the pipe body 1, and improves the service life of the rotating flange. The rolling bearing 5 adopts a deep groove ball bearing.
[0028] As Figure 3 、 4 、shown in 5, in this embodiment, it further includes: a set of steel balls 6. A first annular installation groove 110 is provided on the end face of the convex portion 11 away from the fixed flange plate 31. A second annular installation groove 3200 is provided on the inner wall of the first annular notch 320, which is matched with the first annular installation groove 110. The cross sections of the first annular installation groove 110 and the second annular installation groove 3200 are both semi-circular shapes adapted to the shape of the steel balls 6. When the first annular installation groove 110 and the second annular installation groove 3200 are buckled together, a set of the steel balls 6 are installed between the first annular installation groove 110 and the second annular installation groove 3200, and a set of the steel balls 6 are in rolling fit between the first annular installation groove 110 and the second annular installation groove 3200. The steel balls 6 and the rolling bearing 5 act together to reduce the rotational wear between the rotatable flange plate 32 and the pipe body 1 and extend the service life of the rotating flange; the first annular installation groove 110 and the second annular installation groove 3200 cooperate to form a rolling track for a set of the steel balls 6. The number of a set of the steel balls 6 is 130.
[0029] In this embodiment, there is a gap 8 between the protrusion 11 and the rotatable flange 32, between the rotatable flange 32 and the mounting end cover 4, and between the mounting end cover 4 and the rolling bearing 5, and the gap 8 extends along the circumference of the tube body 1. There is a gap 8 between the protrusion 11 and the rotatable flange 32, between the rotatable flange 32 and the mounting end cover 4, and between the mounting end cover 4 and the rolling bearing 5. The gap 8 between the protrusion 11 and the rotatable flange 32 and between the rotatable flange 32 and the mounting end cover 4 is to ensure the smooth rotation of the rotatable flange 32 and prevent the rotatable flange 32 from getting stuck during the rotation process; the gap 8 between the mounting end cover 4 and the rolling bearing 5 is to ensure the smooth rotation of the rolling bearing 5. After the mounting end cover 4 is screwed into place on the tube body 1, it is necessary to rotate the mounting end cover 4 1 / 16 of a turn to ensure the gap 8 between the mounting end cover 4 and the rolling bearing 5.
[0030] In this embodiment, the end of the mounting end cover 4 away from the fixed flange 31 is provided with a first annular protrusion 41, and the first annular protrusion 41 extends radially outward along the inner ring of the mounting end cover 4. The first annular protrusion 41 is used to indicate whether the mounting position of the mounting end cover 4 is accurate. When the end surface of the first annular protrusion 41 away from the fixed flange 31 is flush with the end surface of the tube body 1 away from the fixed flange 31, the positioning of the mounting position of the mounting end cover 4 is completed.
[0031] In this embodiment, the mounting end cover 4 is provided with a second annular notch 40 on one side near the fixed flange 31, and the inner wall of the rotatable flange 32 is provided with a second annular protrusion 322 adapted to the second annular notch 40, and the second annular protrusion 322 is used to accommodate the second annular notch 40 to axially limit the rotatable flange 32. The protrusion 11 cooperates with the second annular notch 40 to axially limit the rotatable flange 32, so that the rotatable flange 32 does not undergo axial displacement when rotating.
[0032] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanation here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.
Claims
1. A rotating flange, comprising: A pipe body (1), a pair of flow openings (2), the pair of flow openings (2) being respectively arranged at the two ends of the pipe body (1), characterized in that: comprising: a pair of flanges (3) and a mounting end cover (4), the pair of flanges (3) being respectively sleeved at the two ends of the pipe body (1), the pair of flanges (3) comprising: a fixed flange (31) and a rotatable flange (32), the fixed flange (31) being sleeved on the end of the pipe body (1), the rotatable flange (32) being rotatably sleeved on one end of the pipe body (1) away from the fixed flange (31), a side of the pipe body (1) away from the fixed flange (31) being provided with a circle of protrusions (11) protruding outwardly along its circumference, the rotatable flange (32) being close to the fixed flange (31) The inner wall of one end is provided with a first annular notch (320) corresponding to the convex portion (11), the first annular notch (320) is used to accommodate the convex portion (11) and axially limit the rotatable flange (32), the inner wall of the rotatable flange (32) at one end away from the fixed flange (31) is provided with an annular receiving cavity (321) corresponding to the mounting end cover (4), the mounting end cover (4) is arranged in the annular receiving cavity (321), the mounting end cover (4) is sleeved on the tube body (1), the mounting end cover (4) is threadedly sealed with the tube body (1), the threaded connection position of the mounting end cover (4) with the tube body (1) is covered with a hot melt gelling layer (7), and the hot melt gelling layer (7) is arranged along the circumference of the tube body (1).
2. A rotating flange according to claim 1, characterized in that: A group of through holes (30) is respectively provided on the pair of flanges (3); the group of through holes (30) is evenly arranged along the circumference of the flange (3); and the group of through holes (30) axially penetrates the flange (3).
3. The swivel flange according to claim 1, characterized in that: At least one annular groove (10) is respectively provided on the end surfaces of both sides of the tube body (1); the cross section of the annular groove (10) is trapezoidal; the annular grooves (10) are evenly arranged along the radial direction of the tube body (1).
4. The rotating flange according to claim 1, characterized in that: Also includes: A rolling bearing (5), wherein the rolling bearing (5) is sleeved on the tube body (1), the rolling bearing (5) abuts against the side surface of the protrusion (11) in the axial direction of the tube body (1), and the rolling bearing (5) is mounted on a rotatable flange (32).
5. The swivel flange according to claim 1, characterized in that: Also includes: A group of steel balls (6); a first annular mounting groove (110) is provided on an end surface of the convex portion (11) away from the fixed flange (31); a second annular mounting groove (3200) matching the first annular mounting groove (110) is provided on the inner wall of the first annular notch (320); the cross-sections of the first annular mounting groove (110) and the second annular mounting groove (3200) are both semicircular and adapted to the shape of the steel balls (6); when the first annular mounting groove (110) and the second annular mounting groove (3200) are buckled together, the group of steel balls (6) are installed between the first annular mounting groove (110) and the second annular mounting groove (3200); and the group of steel balls (6) are rollingly matched between the first annular mounting groove (110) and the second annular mounting groove (3200).
6. The swivel flange according to claim 1, characterized in that: Gaps (8) are provided between the convex portion (11) and the rotatable flange (32), between the rotatable flange (32) and the mounting end cover (4), and between the mounting end cover (4) and the rolling bearing (5), and the gaps (8) extend along the circumference of the tube body (1).
7. The rotating flange according to claim 1, characterized in that: A first annular protrusion (41) is provided at one end of the mounting end cover (4) away from the fixed flange (31), and the first annular protrusion (41) extends radially outward along the inner ring of the mounting end cover (4).
8. The rotating flange according to claim 1, characterized in that: A second annular notch (40) is provided on one side of the mounting end cover (4) near the fixed flange (31), and a second annular protrusion (322) adapted to the second annular notch (40) is provided on the inner wall of the rotatable flange (32), wherein the second annular protrusion (322) is used to accommodate the second annular notch (40) and to axially limit the rotatable flange (32).