Rotary joint special for ultralow-temperature fluid loading and unloading arm

Abstract

The utility model discloses a special rotary joint for an ultralow-temperature fluid loading and unloading arm, and relates to the technical field of rotary joints. The connector comprises a connector body, a first flange plate is arranged at the top of the connector body, a second flange plate is arranged above the first flange plate, a plurality of mounting holes are formed in the first flange plate and the second flange plate, and mounting assemblies are arranged in the mounting holes in the second flange plate. And a driving mechanism is arranged in an inner cavity of the mounting assembly. When dismounting is needed, the driving mechanism is rotated reversely, thrust to the balls is reduced, the mounting holes in the first flange plate are obliquely arranged, the balls can retract, and then the tight connection state of the first flange plate and the second flange plate is relieved, so that tedious operation of traditional flange connection is avoided, and the dismounting efficiency is improved. The connecting and detaching efficiency of the loading and unloading arm and the external pipe is improved, time and labor cost is reduced, and convenience and reliability of the loading and unloading system are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary joints, and in particular relates to a rotary joint dedicated to a cryogenic fluid loading and unloading arm. Background Art

[0002] In modern industry, fluid loading arms play a critical role as essential devices for transferring liquid and gaseous products between ground equipment and liquid tank trucks or other mobile containers. The performance of rotary joints, core components of fluid loading arms, directly impacts the efficiency and reliability of the entire loading and unloading system.

[0003] Especially when it comes to top-mounted liquefied gas loading and unloading arms, flange connection structures are often used. This requires that the end of the vertical pipe of the loading and unloading arm also needs to be equipped with a flange joint. First, auxiliary tools are needed to remove the multiple bolts and nuts on the flange one by one. The operation process is cumbersome and consumes a lot of time and manpower.

[0004] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0005] In response to the problems in the related art, the utility model proposes a special rotary joint for ultra-low temperature fluid loading and unloading arms to overcome the above technical problems existing in the existing related art.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a special rotary joint for an ultra-low temperature fluid loading and unloading arm, comprising a joint body, a first flange being provided on the top of the joint body, a second flange being provided above the first flange, a plurality of mounting holes being provided inside the first flange and the second flange, a mounting assembly being provided in the mounting holes on the second flange, a driving mechanism being provided in the inner cavity of the mounting assembly, balls being symmetrically provided in the inner cavity of the mounting assembly and located at the bottom of the driving mechanism, the driving mechanism being rotated to move in the mounting assembly and push the balls to move, the plurality of mounting holes on the first flange being also arranged at an angle, and the mounting holes can push the two balls to reset.

[0008] Furthermore, the mounting assembly includes a connecting rod, which is arranged in the mounting assembly on the second flange, and a moving groove for the two balls to move is opened on the connecting rod.

[0009] Furthermore, a connecting block is fixedly installed on the top of the connecting rod, and a threaded groove is provided on the connecting rod.

[0010] Furthermore, the driving mechanism includes a threaded rod, the threaded rod is located in the inner cavity of the connecting rod, and the threaded rod is threadedly mounted with the thread groove on the connecting rod.

[0011] Furthermore, a handle is fixedly installed on the top of the threaded rod, and a spring is provided below the threaded rod and in the inner cavity of the connecting rod.

[0012] Furthermore, a moving block is provided at the other end of the spring, and the two balls are located below the moving block.

[0013] Furthermore, one end of the moving block close to the two balls is arranged in an inclined manner, so that the moving block can push the two balls to move in the moving groove.

[0014] The utility model has the following beneficial effects:

[0015] When the utility model needs to be disassembled, the driving mechanism is rotated in the opposite direction to reduce the thrust on the ball. Since the mounting hole on the first flange is arranged at an angle, the ball can be retracted, thereby releasing the tight connection between the first flange and the second flange. This design avoids the cumbersome operation of traditional flange connection, improves the connection and disassembly efficiency of the loading and unloading arm and the external pipe, reduces time and labor costs, and improves the convenience and reliability of the loading and unloading system.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a three-dimensional structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation components of the present utility model;

[0020] Figure 3 This is a schematic diagram of the connecting rod of the present invention;

[0021] Figure 4 Schematic diagram of the thread groove of the present utility model;

[0022] Figure 5 This is a schematic diagram of the transfer of the present utility model;

[0023] Figure 6This is a schematic diagram of the second flange of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] 1. Connector body; 2. First flange; 3. Second flange; 4. Mounting hole; 5. Mounting assembly; 501. Connecting rod; 502. Moving groove; 503. Connecting block; 504. Threaded groove; 6. Driving mechanism; 601. Threaded rod; 602. Spring; 603. Moving block; 604. Handle; 7. Ball. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the utility model embodiments in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the utility model embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of utility model protection.

[0027] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] See also Figures 1-6 As shown, the utility model is a special rotary joint for ultra-low temperature fluid loading and unloading arms, comprising a joint body 1, a first flange 2 being provided on the top of the joint body 1, a second flange 3 being provided above the first flange 2, a plurality of mounting holes 4 being provided inside the first flange 2 and the second flange 3, a mounting assembly 5 being provided in the mounting hole 4 on the second flange 3, a driving mechanism 6 being provided in the inner cavity of the mounting assembly 5, balls 7 being symmetrically provided in the inner cavity of the mounting assembly 5 and at the bottom of the driving mechanism 6, the driving mechanism 6 is rotated to move in the mounting assembly 5 and push the balls 7 to move, the plurality of mounting holes 4 on the first flange 2 being arranged at an angle, and the mounting holes 4 can push the two balls 7 to reset.

[0029] In the application of the ultra-low temperature fluid loading and unloading arm, the first flange 2 on the top of the joint body 1 and the second flange 3 above it together constitute a connection structure. When connection is required, the mounting holes 4 on the first flange 2 and the second flange 3 are aligned, and the mounting assembly 5 is set in the mounting hole 4 of the second flange 3. The driving mechanism 6 inside it can be rotated manually or by other means. When the driving mechanism 6 is rotated, the driving mechanism 6 moves in the inner cavity of the mounting assembly 5. Since the balls 7 are symmetrically arranged at the bottom of the driving mechanism 6, as the driving mechanism 6 moves, the balls 7 are pushed to move in the mounting assembly 5. The driving mechanism 6 will generate an outward squeezing force on the two balls 7, so that the driving mechanism 6 pushes the two balls 7 to move outward. Subsequently, the outward movement of the two balls 7 resists the end of the first flange 2 away from the second flange 3, so as to limit the movement between the first flange 2 and the second flange 3, so that the connection between the first flange 2 and the second flange 3 is tighter and more stable.

[0030] When disassembly is required, the driving mechanism 6 is rotated in the opposite direction to reduce the thrust on the ball 7. Since the multiple mounting holes 4 on the first flange 2 are arranged at an angle, the ball 7 can push the ball 7 to retract, thereby releasing the tight connection between the first flange 2 and the second flange 3. This design avoids the tedious operation of using auxiliary tools to remove bolts and nuts one by one in traditional flange connections, greatly improves the efficiency of connecting and disassembling the loading and unloading arm and the external pipe, reduces time and labor costs, and improves the convenience and reliability of the entire loading and unloading system.

[0031] When disassembly is required, the driving mechanism 6 is rotated in the opposite direction to reduce the thrust on the ball 7. Since the mounting hole 4 on the first flange 2 is set at an angle, the ball 7 can retract, thereby releasing the tight connection between the first flange 2 and the second flange 3. This design avoids the cumbersome operation of traditional flange connection, improves the connection and disassembly efficiency of the loading and unloading arm and the external pipe, reduces time and labor costs, and improves the convenience and reliability of the loading and unloading system.

[0032] In one embodiment, for the above-mentioned mounting assembly 5, the mounting assembly 5 includes a connecting rod 501, which is arranged in the mounting assembly 5 on the second flange 3, and a moving groove 502 for the two balls 7 to move is opened on the connecting rod 501.

[0033] A connecting block 503 is fixedly mounted on the top of the connecting rod 501 , and a threaded groove 504 is formed on the connecting rod 501 .

[0034] The driving mechanism 6 includes a threaded rod 601 . The threaded rod 601 is located in the inner cavity of the connecting rod 501 , and the threaded rod 601 is threadedly mounted with the thread groove 504 on the connecting rod 501 .

[0035] A handle 604 is fixedly mounted on the top of the threaded rod 601 , and a spring 602 is provided below the threaded rod 601 and in the inner cavity of the connecting rod 501 .

[0036] A moving block 603 is provided at the other end of the spring 602 , and the two balls 7 are located below the moving block 603 .

[0037] One end of the moving block 603 close to the two balls 7 is arranged in an inclined manner so that the moving block 603 can push the two balls 7 to move in the moving groove 502 .

[0038] The plurality of mounting holes 4 on the first flange 2 are arranged at an angle, and the mounting holes 4 can push the two balls 7 to reset.

[0039] In the connection system of the ultra-low temperature fluid loading and unloading arm, when the connection operation is performed, the threaded rod 601 is rotated by rotating the handle 604. Since the threaded rod 601 is threadedly installed with the threaded groove 504 on the connecting rod 501, the rotation of the threaded rod 601 causes the threaded rod 601 to move downward in the connecting rod 501. At this time, the spring 602 and the moving block 603 located in the inner cavity of the connecting rod 501 also move downward. As the connecting rod 501 moves downward, the inclined end of the moving block 603 close to the ball 7 gradually approaches the ball 7 and pushes the two balls 7 outward in the moving groove 502 on the connecting rod 501. Move, and then the outward movement of the two balls 7 resists the end of the first flange 2 away from the second flange 3, so as to limit the movement between the first flange 2 and the second flange 3. At this time, the spring 602 is pushed by the threaded rod 601 and the action of the moving block 603 and the balls 7, so that the elastic potential energy of the spring 602 reaches the maximum value. That is, when the first flange 2 and the second flange 3 are pulled, the inclined mounting hole 4 of the first flange 2 will not push the two balls 7 to move, thereby making the balls 7 and the connecting block 503 make the connection between the first flange 2 and the second flange 3 tighter and more stable;

[0040] When disassembly is required, the handle 604 is rotated in the opposite direction to drive the threaded rod 601 to rotate in the opposite direction, thereby moving the threaded rod 601 upward, reducing the downward pressure on the spring 602 and the moving block 603. At the same time, due to the elastic effect of the spring 602, the thrust on the moving block 603 and the ball 7 is reduced. At this time, under the action of the inclined mounting hole 4 of the first flange 2, the ball 7 can retract and reset in the moving groove 502, releasing the tight connection between the first flange 2 and the second flange 3. Through such a structural design, the mutual cooperation of the handle 604, threaded rod 601, connecting rod 501, spring 602, moving block 603 and ball 7 is realized to realize convenient control of the connection state of the first flange 2 and the second flange 3, greatly improving the efficiency of connection and disassembly of the loading and unloading arm, and reducing time and labor costs.

[0041] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the utility model. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] The preferred embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The preferred embodiments do not describe all details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. This specification selects and describes these embodiments in detail to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A special rotary joint for ultra-low temperature fluid loading and unloading arm, comprising a joint body (1), characterized in that: A first flange (2) is provided on the top of the joint body (1), a second flange (3) is provided above the first flange (2), a plurality of mounting holes (4) are provided inside the first flange (2) and the second flange (3), a mounting assembly (5) is provided in the mounting hole (4) on the second flange (3), a driving mechanism (6) is provided in the inner cavity of the mounting assembly (5), balls (7) are symmetrically provided in the inner cavity of the mounting assembly (5) and at the bottom of the driving mechanism (6), the driving mechanism (6) is rotated to move in the mounting assembly (5) and push the balls (7) to move, the plurality of mounting holes (4) on the first flange (2) are also arranged at an angle, and the mounting holes (4) can push the two balls (7) to reset.

2. A rotary joint for ultra-low temperature fluid loading and unloading arm according to claim 1, characterized in that: The mounting assembly (5) includes a connecting rod (501), which is arranged in the mounting assembly (5) on the second flange (3), and a moving groove (502) for the two balls (7) to move is provided on the connecting rod (501).

3. A rotary joint for ultra-low temperature fluid loading and unloading arm according to claim 2, characterized in that: A connecting block (503) is fixedly mounted on the top of the connecting rod (501), and a threaded groove (504) is provided on the connecting rod (501).

4. A rotary joint for ultra-low temperature fluid loading and unloading arm according to claim 3, characterized in that: The driving mechanism (6) comprises a threaded rod (601), the threaded rod (601) is located in the inner cavity of the connecting rod (501), and the threaded rod (601) is threadedly mounted on the thread groove (504) on the connecting rod (501).

5. A rotary joint for ultra-low temperature fluid loading and unloading arm according to claim 4, characterized in that: A handle (604) is fixedly mounted on the top of the threaded rod (601), and a spring (602) is provided below the threaded rod (601) and in the inner cavity of the connecting rod (501).

6. A rotary joint for ultra-low temperature fluid loading and unloading arm according to claim 5, characterized in that: The other end of the spring (602) is provided with a moving block (603), and the two balls (7) are located below the moving block (603).

7. A rotary joint for ultra-low temperature fluid loading and unloading arm according to claim 6, characterized in that: One end of the moving block (603) close to the two balls (7) is arranged in an inclined manner so that the moving block (603) can push the two balls (7) to move in the moving groove (502).

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