A rotary joint, an installation method thereof and a loading and unloading arm having the same

Abstract

The present application discloses a rotary joint, an installation method thereof and a loading and unloading arm having the same, and relates to the technical field of loading and unloading arms. The rotary joint comprises: a first joint, the first joint having a branch pipe, the branch pipe being used for the inflow of the medium; a second joint, the second joint being used to connect the vertical pipe; a first flange, the first flange being arranged on one side of the first joint and the second joint, the first flange being used to connect the first joint and the second joint; a second flange, the second flange being arranged on the other side of the first joint and the second joint, the second flange being used to connect the first joint and the second joint; a connecting piece, the connecting piece being arranged between the first flange and the second flange, the connecting piece having an accommodating cavity, the first joint being arranged in the accommodating cavity, the middle part of the accommodating cavity having an opening, and the branch pipe extending from the opening. When the rotary joint is installed on the loading and unloading arm, the problem of eccentricity of the vertical pipe under the action of gravity can be avoided.

Description

Technical Field

[0001] The present application relates to the technical field of loading and unloading arms, and in particular to a rotary joint, an installation method thereof, and a loading and unloading arm having the same. Background Art

[0002] With the rapid development of fluid loading and unloading arms in recent years, fluid loading and unloading arms have become key equipment in industrial production. They are mainly used in fluid loading and unloading in the petroleum and chemical industries. The technical core component of the loading and unloading arm is the rotary joint. The main structural components of the existing conventional rotary joints are static sealing flanges, dynamic sealing flanges, inner rings, outer rings and seals. For example, the Chinese utility model patent with announcement number CN202937919U discloses "a rotary joint for low-temperature LNG loading", including a left flange and a right flange. The left flange is connected to the inner ring to form a left rotating part, and the right flange is connected to the outer ring to form a right rotating part. The left rotating part and the right rotating part can rotate relative to each other.

[0003] The existing rotary joint has the following defects: after the rotary joint used to connect the outer arm and the vertical pipe is installed on the loading and unloading arm, it will generate torque on the outer arm, causing the vertical pipe to be eccentric to one side under the action of gravity, making it difficult to operate when connecting the vertical pipe to the pipe mouth on the vehicle. In order to eliminate the eccentricity of the vertical pipe caused by gravity, the conventional practice is to set a counterweight on the other side of the vertical pipe so that the counterweight and the vertical pipe are balanced. Although this solves the problem of eccentricity of the vertical pipe, the gravity load of the counterweight is increased, and the vertical pipe is heavy during operation. At the same time, the weight load generated by the counterweight acts on the loading and unloading arm, which greatly increases the workload of other components on the loading and unloading arm and affects the service life of the product. Summary of the invention

[0004] The purpose of the present application is to provide a rotary joint to solve the problem that the existing rotary joint installed on the loading and unloading arm generates torque on the outer arm, thereby avoiding eccentricity of the vertical pipe under the action of gravity.

[0005] To achieve the above-mentioned purpose, the embodiment of the present application adopts the following technical scheme: a rotary joint, comprising: a first joint, the first joint having a branch pipe, the branch pipe is used for the inflow of the medium; a second joint, the second joint is used to connect the vertical pipe; a first flange, the first flange is arranged on one side of the first joint and the second joint, the first flange is used to connect the first joint and the second joint; the second flange, the second flange is arranged on the other side of the first joint and the second joint, the second flange is used to connect the first joint and the second joint; a connecting piece, the connecting piece is arranged between the first flange and the second flange, the connecting piece has an accommodating cavity, the first joint is arranged in the accommodating cavity, the middle part of the accommodating cavity has an opening, and the branch pipe extends from the opening.

[0006] In the above technical solution, the embodiment of the present application sets the first joint and the second joint at the geometric center of the rotary joint, ensures the circulation of the medium through the first flange and the second flange on both sides, and adjusts the angle of the branch pipe on the first joint by setting the first connector and the second connector. When the rotary joint is installed on the loading and unloading arm, the first joint is connected to the outer arm, and the second joint is connected to the vertical pipe. The forces on the outer arm and the vertical pipe are independent of each other and do not affect each other. The connection points of the outer arm and the vertical pipe are both on the center line of the rotary joint, avoiding the problem of eccentricity of the vertical pipe under the action of gravity.

[0007] Further, according to an embodiment of the present application, the first joint also includes through hole 1 and through hole 2, through hole 1 is connected to the first flange, and through hole 2 is connected to the second flange.

[0008] Further, according to an embodiment of the present application, the lower end of the second joint has a vertical pipe interface.

[0009] Further, according to an embodiment of the present application, connecting parts are provided on both sides of the second joint, and the connecting parts are used to connect with the first flange and the second flange.

[0010] Further, according to an embodiment of the present application, connecting parts are provided on both sides of the second joint, the connecting parts have a mounting ring 1, and a mounting hole 1 is provided on the mounting ring 1.

[0011] Further, according to an embodiment of the present application, a second mounting ring is provided at one end of the first flange, and a second mounting hole is provided on the second mounting ring.

[0012] Further, according to an embodiment of the present application, a second mounting ring is provided at one end of the first flange, and a second mounting hole is provided on the second mounting ring.

[0013] Further, according to an embodiment of the present application, a mounting ring four is provided at one end of the second flange, and a mounting hole four is provided on the mounting ring four.

[0014] Further, according to an embodiment of the present application, a mounting ring five is provided at the other end of the second flange, and a mounting hole five is provided on the mounting ring five.

[0015] Further, according to an embodiment of the present application, the connecting member includes: a first connecting member, the first connecting member is sleeved on the first joint, and one end of the first connecting member is connected to the first flange; a second connecting member, the second connecting member is sleeved on the second joint, one end of the second connecting member is connected to the second flange, and the other end of the second connecting member is connected to the other end of the first connecting member.

[0016] In order to achieve the above object, the embodiment of the present application further discloses a method for installing a rotary joint, comprising the following steps:

[0017] Install the first joint: put the connecting piece on the first joint, so that the first connecting piece and the second connecting piece are fixedly connected, and the branch pipe of the first joint extends from the opening in the middle of the connecting piece; connect the branch pipe of the first joint to the outer arm of the loading and unloading arm;

[0018] Install the second joint: install the first flange and the second flange on both sides of the second joint, and connect the second joint to the vertical pipe of the loading and unloading arm;

[0019] Connection: Connect the first flange and the second flange to the two ends of the connecting piece respectively.

[0020] In order to achieve the above purpose, the present application also discloses a loading and unloading arm having a rotary joint as described above.

[0021] Compared with the prior art, the present application sets the first joint and the second joint at the geometric center of the rotary joint, ensures the circulation of the medium through the first flange and the second flange on both sides, and adjusts the angle of the branch pipe on the first joint by setting the first connector and the second connector. When the rotary joint is installed on the loading and unloading arm, the first joint is connected to the outer arm, and the second joint is connected to the vertical pipe. The forces on the outer arm and the vertical pipe are independent of each other and do not affect each other. The connection points of the outer arm and the vertical pipe are both on the center line of the rotary joint, avoiding the problem of eccentricity of the vertical pipe under the action of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a structural schematic diagram of a rotary joint in this application.

[0024] Figure 2 yes Figure 1 Schematic diagram of the structure of the first joint.

[0025] Figure 3 yes Figure 1 Schematic diagram of the structure of the second joint.

[0026] Figure 4 yes Figure 1 Schematic diagram of the structure of the first flange and the first connecting member.

[0027] Figure 5 yes Figure 1 Schematic diagram of the structure of the second flange and the second connecting member.

[0028] In the attached figure

[0029] 1. First joint 11, branch pipe 12, through hole 1

[0030] 13. Through hole 2

[0031] 2. Second joint 21, vertical pipe interface 22, connecting part

[0032] 23. Mounting ring 1 24. Mounting hole 1

[0033] 3. First flange 31, second mounting ring 32, second mounting hole

[0034] 33. Mounting ring three 34. Mounting hole three

[0035] 4. Second flange 41. Mounting ring 4. 42. Mounting hole 4.

[0036] 43. Mounting ring five 44. Mounting hole five

[0037] 5. First connecting member 51. Mounting ring six 52. Mounting ring seven

[0038] 53. Mounting hole six 54. Mounting hole seven

[0039] 6. Second connecting piece 61. Mounting ring eight 62. Mounting ring nine

[0040] 63. Mounting hole eight 64. Mounting hole nine DETAILED DESCRIPTION

[0041] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0045] Figure 1 FIG. 1 is a schematic diagram of the structure of a rotary joint in this application. Figure 1 As shown, the rotary joint includes a first joint 1 and a second joint 2, the first joint 1 is used for the inflow of the medium, the second joint 2 is used for connecting the vertical pipe, and the two sides of the first joint 1 and the second joint 2 are respectively connected through the first flange 3 and the second flange 4. A first connecting member 5 is arranged between the first joint 1 and the first flange 3, and the first connecting member 5 is sleeved on one side of the first joint 1 and fixedly connected to the first flange 3. A second connecting member 6 is arranged between the first joint 1 and the second flange 4, and the second connecting member 6 is sleeved on the other side of the first joint 1 and fixedly connected to the second flange 4. The first connecting member 5 and the second connecting member 6 are fixedly connected, and the first connecting member 5 and the second connecting member 6 form an integral connecting member, which has a receiving cavity, and the first joint 1 is arranged in the receiving cavity and can be rotated.

[0046] Specifically, Figure 2 The specific structure of the first joint 1 is shown. Figure 2 As shown, the first joint 1 comprises a branch pipe 11, a through hole 12 and a through hole 2 13. The branch pipe 11 is arranged in the middle of the first joint 1, and the through hole 12 and the through hole 2 13 are arranged on both sides of the first joint. Figure 1 and Figure 2 The connecting piece composed of the first connecting piece 5 and the second connecting piece 6 has an opening in the middle, and the branch pipe 11 extends from the opening of the connecting piece, and the outer arm can be connected through the branch pipe 11 for the inflow of the medium. By rotating the first joint 1 in the accommodating cavity, the angle of the branch pipe 11 can be adjusted up and down to adapt to different installation environments.

[0047] In addition, the through hole 12 is connected to the first flange 3 , and the through hole 2 13 is connected to the second flange 4 , so that the medium flows into the first joint 1 and then flows to the first flange 3 and the fourth flange 4 .

[0048] Specifically, Figure 3 The specific structure of the second joint 2 is shown. Figure 3 As shown, the second joint 2 is a vertically arranged cylinder with a closed upper end and a drop pipe interface 21 at the lower end, and the drop pipe interface 21 is used to connect the drop pipe. The second joint 2 is provided with connecting parts 22 on both sides, and the connecting parts 22 are used to be fixedly connected with the first flange 3 and the second flange 4. The connecting parts 22 have a mounting ring 23, and the mounting ring 23 is evenly distributed with mounting holes 24.

[0049] Specifically, Figure 4 The specific structure of the first flange 3 and the first connecting member 5 is shown. Figure 4 As shown, one end of the first flange 3 is provided with a second mounting ring 31, and the second mounting ring 31 is evenly distributed with second mounting holes 32 for fixed connection with the first connecting member 5. The other end of the first flange 3 is provided with a third mounting ring 33, and the third mounting ring 33 is evenly distributed with third mounting holes 34 for fixed connection with the second joint 2. Figure 3 and Figure 4 During assembly, the mounting ring 1 23 and the mounting ring 3 33 are fitted together, the mounting hole 1 24 and the mounting hole 3 34 are aligned, and fasteners are installed in the mounting hole 1 24 and the mounting hole 3 34 to fix the first flange 3 and the second joint 2 in connection.

[0050] In addition, if Figure 4 As shown, the first connecting member 5 is in a circular ring shape at one end that fits with the first flange 3, and in a semicircular ring shape at the other end, with a six-mounting ring 51 and a seven-mounting ring 52 on both sides. Among them, six mounting holes 53 are evenly distributed on the six-mounting ring 51, which are used to be fixedly connected with the first flange 3. During assembly, the six-mounting ring 51 fits with the second mounting ring 31, the six-mounting hole 53 is aligned with the second mounting hole 32, and fasteners are installed in the six-mounting hole 53 and the second mounting hole 32, so that the first connecting member 5 is fixedly connected with the first flange 3. The seven-mounting ring 52 is in a semicircular ring shape, and seven mounting holes 54 are evenly distributed on it, which are used to be fixedly connected with the second connecting member 6.

[0051] Specifically, Figure 5 The specific structure of the second flange 4 and the second connecting member 6 is shown. Figure 5 As shown, one end of the second flange 4 is provided with a mounting ring 41, and mounting holes 42 are evenly distributed on the mounting ring 41 for fixed connection with the second connecting member 6. The other end of the second flange 4 is provided with a mounting ring 5 43, and mounting holes 5 44 are evenly distributed on the mounting ring 5 43 for fixed connection with the second joint 2. Figure 3 and Figure 5 During assembly, the mounting ring 1 23 and the mounting ring 5 43 fit together, the mounting hole 1 24 and the mounting hole 5 44 are aligned, and fasteners are installed in the mounting hole 1 24 and the mounting hole 5 44 to fix the second flange 4 and the second joint 2 in connection.

[0052] In addition, if Figure 5 As shown, the second connecting member 6 is in a circular ring shape at one end that fits with the second flange 4, and in a semicircular ring shape at the other end, and has a mounting ring 8 61 and a mounting ring 9 62 at both ends. Among them, mounting holes 8 63 are evenly distributed on the mounting ring 8 61, which is used for fixed connection with the second flange 4. During assembly, the mounting ring 8 62 fits with the mounting ring 4 41, the mounting holes 8 63 and the mounting holes 4 42 are aligned, and fasteners are installed in the mounting holes 8 63 and the mounting holes 4 42, so that the second connecting member 6 is fixedly connected to the second flange 4. The mounting ring 9 62 is in a semicircular ring shape, and mounting holes 9 62 are evenly distributed on it, which is used for fixed connection with the first connecting member 5.

[0053] Combination Figure 1 , Figure 4 and Figure 5 , the mounting ring 7 52 and the mounting ring 9 62 fit each other, the mounting hole 7 54 and the mounting hole 9 64 are aligned, and fasteners are installed in the mounting holes 7 54 and the mounting holes 9 64, so that the first connecting member 5 and the second connecting member 6 are fixedly connected to form an integral connecting member. Since the mounting ring 7 52 and the mounting ring 9 62 are semicircular rings, an opening is formed in the middle of the combined connecting member, so that the branch pipe 11 can extend from the opening. At the same time, the opening direction can be adjusted by adjusting the installation position of the first connecting member 5 and the second connecting member 6, thereby adjusting the direction of the branch pipe 11.

[0054] In the above technical solution, the present application arranges the first joint 1 and the second joint 2 at the geometric center of the rotary joint, ensures the circulation of the medium through the first flange 3 and the second flange 4 on both sides, and adjusts the angle of the branch pipe 11 on the first joint 1 by arranging the first connector 5 and the second connector 6. When the rotary joint is installed on the loading and unloading arm, the problem of eccentricity of the vertical pipe under the action of gravity can be avoided.

[0055] Finally, the present application also discloses a method for installing a rotary joint, comprising the following steps:

[0056] Install the first joint: put the first connecting member 5 and the second connecting member 6 on the first joint 1 to fix the first connecting member 5 and the second connecting member 6 in connection, and extend the branch pipe 11 of the first joint 1 from the opening in the middle formed by the combination of the first connecting member 5 and the second connecting member 6; connect the branch pipe 11 of the first joint 1 to the outer arm of the loading and unloading arm.

[0057] Install the second joint: install the first flange 3 and the second flange 4 on both sides of the second joint 2, and connect the second joint 2 to the vertical pipe of the loading and unloading arm;

[0058] Connection: Connect the first flange 3 and the first connecting piece 5 , and connect the second flange 4 and the second connecting piece 6 .

[0059] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A rotary joint, characterized in that: include: A first joint, wherein the first joint has a branch pipe, and the branch pipe is used for the inflow of the medium; a second joint, the second joint being used for connecting a drop pipe; A first flange, the first flange is arranged on one side of the first joint and the second joint, and the first flange is used to connect the first joint and the second joint; a second flange, the second flange being arranged on the other side of the first joint and the second joint, and the second flange being used to connect the first joint and the second joint; A connecting piece, the connecting piece is arranged between the first flange and the second flange, the connecting piece has a receiving cavity, the first joint is arranged in the receiving cavity, the receiving cavity has an opening in the middle, and the branch pipe extends from the opening; The first joint further comprises a through hole 1 and a through hole 2, wherein the through hole 1 is communicated with the first flange, and the through hole 2 is communicated with the second flange; The lower end of the second joint has a vertical pipe interface; The second joint is provided with connecting parts on both sides, and the connecting parts are used to connect with the first flange and the second flange; The second joint is provided with connecting parts on both sides, the connecting parts have a first mounting ring, and the first mounting ring is provided with a first mounting hole; A second mounting ring is provided at one end of the first flange, and a second mounting hole is provided on the second mounting ring; The other end of the first flange is provided with a mounting ring three, and the mounting ring three is provided with a mounting hole three; A mounting ring 4 is provided at one end of the second flange, and a mounting hole 4 is provided on the mounting ring 4; The other end of the second flange is provided with a mounting ring five, and the mounting ring five is provided with a mounting hole five; The connecting piece comprises: A first connecting piece, wherein the first connecting piece is sleeved on the first joint, and one end of the first connecting piece is connected to the first flange; A second connecting piece is sleeved on the second joint, one end of the second connecting piece is connected to the second flange, and the other end of the second connecting piece is connected to the other end of the first connecting piece.

2. A method for installing a rotary joint according to claim 1, characterized in that: The following steps are involved: Install the first joint: put the connecting piece on the first joint, so that the first connecting piece and the second connecting piece are fixedly connected, and the branch pipe of the first joint extends from the opening in the middle of the connecting piece; connect the branch pipe of the first joint to the outer arm of the loading and unloading arm; Install the second joint: install the first flange and the second flange on both sides of the second joint, and connect the second joint to the vertical pipe of the loading and unloading arm; Connection: Connect the first flange and the second flange to the two ends of the connecting piece respectively.

3. A loading and unloading arm, characterized in that: A rotary joint as claimed in claim 1.

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