Telescopic cold insulation PIR pipe splicing device based on buckle locking

Abstract

The utility model discloses a telescopic cold insulation PIR pipe splicing device based on buckle locking, and relates to the technical field of pipeline connection. The connecting device comprises a telescopic pipe, a connecting pipe and an inserting pipe, the connecting pipe and the inserting pipe are fixedly connected to the two ends of the telescopic pipe respectively, positioning sealing assemblies are arranged at the ports of the connecting pipe and the inserting pipe, and rotating clamping assemblies are arranged on the outer surfaces of the connecting pipe and the inserting pipe. An elastic limiting assembly is arranged between the rotary clamping assembly and the connecting pipe. According to the utility model, the connecting pipes and the inserting pipes on the two telescopic pipes are aligned and inserted, and then the clamping assembly is rotated, so that locking can be completed; in the process, the elastic limiting assembly drives the rotary clamping assembly to automatically reset and rotate along the outer surfaces of the connecting pipe and the inserting pipe through the traction effect. According to the arrangement, rapid assembly is achieved through the composite action of inserting and rotating the knob, the two telescopic pipes can be separated only by releasing the locking state of the rotating clamping assembly during reverse operation, and the whole operation is convenient and fast.

Description

Technical Field

[0001] This utility model belongs to the field of pipe connection technology, and specifically relates to a telescopic cold-insulating PIR pipe splicing device based on snap-locking. Background Technology

[0002] With its unique low-temperature resistance, flexibility, and high-efficiency thermal insulation properties, telescopic insulated PIR pipes are widely used in the field of cryogenic fluid transportation, such as liquid hydrogen rocket fueling systems, liquid nitrogen biological sample storage pipelines, and LNG (floating storage and transportation facilities at sea). Its polyimide matrix material has both chemical inertness and radiation resistance, which further extends to harsh industrial environments such as semiconductor high-purity gas transportation and nuclear industry coolant circulation, making it a lightweight and maintenance-free solution to replace traditional metal pipes.

[0003] When transporting cryogenic fluids via telescopic insulated PIR pipes, multiple pipes often need to be spliced ​​together to form a transmission system. Currently, flange connections are mainly used, which rely on multiple sets of bolts for fastening. During operation, each bolt hole must be aligned and pre-tightened, and then tightened symmetrically in stages. Disassembly also requires reversing the entire process. In scenarios involving continuous splicing of multiple pipes, such repetitive operations significantly increase the cumulative time required. Especially in confined conditions such as high-altitude operations or confined spaces, the difficulty of aligning bolt holes is significantly increased, further exacerbating the efficiency bottleneck and making it difficult to meet the timeliness requirements for rapid deployment and emergency maintenance of cryogenic systems. Utility Model Content

[0004] To address the cumbersome operation of connecting multiple telescopic insulated PIR tubes together, this invention proposes a telescopic insulated PIR tube splicing device based on snap-locking, thereby overcoming the aforementioned technical problems in existing related technologies.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a telescopic cold-insulating PIR tube splicing device based on snap-locking, including a telescopic tube, a connecting tube and a plug tube. The connecting tube and the plug tube are respectively fixedly connected to both ends of the telescopic tube. A positioning sealing component is provided at the port of the connecting tube and the plug tube. A rotating snap-fit ​​component is provided on the outer surface of the connecting tube and the plug tube. An elastic limiting component is provided between the rotating snap-fit ​​component and the connecting tube.

[0007] The connecting pipe and the insertion pipe on the two telescopic pipes come into contact with each other so that the connecting pipe and the insertion pipe are connected together by the positioning and sealing assembly. The elastic limiting assembly is used to drive the rotating snap-fit ​​assembly to rotate so that the rotating snap-fit ​​assembly snaps and limits the connecting pipe and the insertion pipe.

[0008] Furthermore, the positioning and sealing assembly includes a sealing groove, one end of which is a connecting pipe, and one end of the insertion pipe is fixedly connected to a sealing ring corresponding to the sealing groove. Both the sealing groove and the sealing ring are hexagonal in shape.

[0009] Furthermore, the rotating snap-fit ​​assembly includes a rotating cylinder, which is rotatably connected to the outside of the telescopic tube. A snap-fit ​​groove is provided on the outside of the insertion tube, and an insertion groove is provided on the inner wall of the snap-fit ​​groove. The insertion groove extends to the outside of the insertion tube, and a snap-fit ​​block is fixedly connected to the inner wall of the rotating cylinder corresponding to the insertion groove and the snap-fit ​​groove.

[0010] Furthermore, the inner wall of the rotating cylinder is in contact with the connecting pipe, and a limit ring is provided at one end of the rotating cylinder, which is fixedly connected to the outer surface of the telescopic pipe.

[0011] Furthermore, the elastic limiting component includes a mounting cavity, which is opened inside the rotating cylinder, and a torsion spring is fixedly connected between the inner wall of the rotating cylinder and the outer surface of the telescopic tube.

[0012] Furthermore, an arc-shaped limiting groove is provided at the rear end of the connecting pipe, and a limiting block is movably connected inside the arc-shaped limiting groove. The limiting block is fixedly connected to the inner wall of the rotating cylinder.

[0013] Furthermore, the outer surface of the rotating cylinder is provided with anti-slip grooves.

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

[0015] 1. This utility model involves aligning and inserting the connecting pipe and insertion tube on two telescopic tubes, and then locking them by rotating the locking assembly. During this process, the elastic limiting assembly drives the rotating locking assembly to automatically reset and rotate along the outer surface of the connecting pipe and insertion tube through traction, thereby locking and limiting the connecting pipe and insertion tube by the rotating locking assembly. The above-mentioned setup achieves quick assembly through the combined action of insertion and knob. In reverse operation, the two telescopic tubes can be separated simply by releasing the locking state of the rotating locking assembly, making the entire installation and disassembly process relatively convenient.

[0016] 2. In this utility model, when the sealing ring is moved into the sealing groove, the snap-fit ​​block can be moved into the snap-fit ​​groove through the insertion groove. At this time, the torsion spring drives the snap-fit ​​block to move into the snap-fit ​​groove through the rotating cylinder, and completes the snap-fit ​​limiting of the connecting pipe and the insertion pipe. In the above setting, when the connected telescopic pipe vibrates, the continuous elastic tension of the torsion spring can dynamically compensate for the displacement deviation, so that the snap-fit ​​block always keeps tightly engaged with the snap-fit ​​groove. This anti-loosening design based on elastic pre-tightening not only ensures the efficient assembly between the connecting pipe and the insertion pipe, but also effectively resists the accidental disengagement caused by vibration through the continuously applied radial holding force.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the external outline structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the telescopic tube structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the insertion tube structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the rotating tube structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the elastic limiting component structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the rotating cylinder structure of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Telescopic tube; 2. Connecting tube; 3. Insertion tube; 4. Positioning and sealing assembly; 401. Sealing groove; 402. Sealing ring; 5. Rotary snap-fit ​​assembly; 501. Rotating cylinder; 502. Snap-fit ​​groove; 503. Insertion groove; 504. Snap-fit ​​block; 505. Limiting ring; 6. Elastic limiting assembly; 601. Mounting cavity; 602. Torsion spring; 603. Arc-shaped limiting groove; 604. Limiting block; 7. Anti-slip groove. Detailed Implementation

[0027] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0028] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0029] Please see Figures 1-6 As shown, this utility model is a telescopic cold-insulating PIR tube splicing device based on snap-locking, including a telescopic tube 1, a connecting tube 2 and a plug tube 3. The connecting tube 2 and the plug tube 3 are respectively fixedly connected to both ends of the telescopic tube 1. A positioning sealing component 4 is provided at the port of the connecting tube 2 and the plug tube 3. A rotating snap-fit ​​component 5 is provided on the outer surface of the connecting tube 2 and the plug tube 3. An elastic limiting component 6 is provided between the rotating snap-fit ​​component 5 and the connecting tube 2.

[0030] The connecting pipe 2 and the insertion pipe 3 on the two telescopic pipes 1 are brought into contact so that the connecting pipe 2 and the insertion pipe 3 are connected together by the positioning sealing assembly 4. The elastic limiting assembly 6 is used to drive the rotating snap-fit ​​assembly 5 to rotate so that the rotating snap-fit ​​assembly 5 snaps and limits the connecting pipe 2 and the insertion pipe 3.

[0031] When connecting the telescopic tubes 1, the rotating snap-fit ​​assembly 5 on one of the telescopic tubes 1 is rotated, and the insertion tube 3 on the other telescopic tube 1 is moved to the connecting tube 2 of the telescopic tube 1, so that the connecting tube 2 and insertion tube 3 on the two telescopic tubes 1 are connected together by the positioning sealing assembly 4. Then the rotating snap-fit ​​assembly 5 is released. At this time, the elastic limiting assembly 6 can drive the rotating snap-fit ​​assembly 5 to rotate and reset. After the reset, the rotating snap-fit ​​assembly 5 can snap and limit the connection of the connecting tube 2 and insertion tube 3.

[0032] By aligning and inserting the connecting pipe 2 and the insertion pipe 3 on the two telescopic pipes 1, the locking assembly 5 can be rotated to complete the locking process. During this process, the elastic limiting assembly 6 drives the rotating locking assembly 5 to automatically reset and rotate along the outer surface of the connecting pipe 2 and the insertion pipe 3 through traction, so that the rotating locking assembly 5 locks and limits the connecting pipe 2 and the insertion pipe 3. The above settings achieve quick assembly through the combined action of insertion and knob. In reverse operation, the two telescopic pipes 1 can be separated simply by releasing the locking state of the rotating locking assembly 5, making the entire installation and disassembly process relatively convenient.

[0033] In one embodiment, the positioning and sealing assembly 4 includes a sealing groove 401, one end of the connecting pipe 2 is provided in the sealing groove 401, and one end of the insertion pipe 3 is fixedly connected to a sealing ring 402 corresponding to the sealing groove 401. Both the sealing groove 401 and the sealing ring 402 are hexagonal in shape.

[0034] By moving the sealing ring 402 on the insertion tube 3 into the sealing groove 401 opened on the connecting tube 2, the connecting tube 2 and the insertion tube 3 can be connected together, and the sealing performance of the connection between the connecting tube 2 and the insertion tube 3 can be guaranteed. At the same time, since both the sealing groove 401 and the sealing ring 402 are hexagonal, the connected connecting tube 2 and the insertion tube 3 will not rotate arbitrarily. This setting ensures the locking and limiting effect of the subsequent rotating snap-fit ​​assembly 5 on the connecting tube 2 and the insertion tube 3, and also ensures the stability of the connection between the two connected telescopic tubes 1.

[0035] In one embodiment, the rotary snap-fit ​​assembly 5 includes a rotating cylinder 501, which is rotatably connected to the outside of the telescopic tube 1. A snap-fit ​​groove 502 is provided on the outside of the insertion tube 3, and an insertion groove 503 is provided on the inner wall of the snap-fit ​​groove 502. The insertion groove 503 extends to the outside of the insertion tube 3. A snap-fit ​​block 504 is fixedly connected to the inner wall of the rotating cylinder 501 corresponding to the insertion groove 503 and the snap-fit ​​groove 502.

[0036] When the ports of the connecting pipe 2 and the insertion pipe 3 are brought into contact, the snap-fit ​​block 504 provided on the inner wall of the rotating cylinder 501 can move into the snap-fit ​​groove 502 through the insertion groove 503. At this time, the rotating cylinder 501 can be directly fitted onto the outer surface of the connecting pipe 2 and the insertion pipe 3. Then, the rotating cylinder 501 is rotated so that the snap-fit ​​block 504 can rotate into the snap-fit ​​groove 502. At this time, the snap-fit ​​block 504 can limit the insertion pipe 3 through the snap-fit ​​groove 502, so that the connecting pipe 2 and the insertion pipe 3 will not separate arbitrarily.

[0037] In one embodiment, for the rotating cylinder 501, the inner wall of the rotating cylinder 501 is in contact with the connecting pipe 2, and a limiting ring 505 is provided at one end of the rotating cylinder 501. The limiting ring 505 is fixedly connected to the outer surface of the telescopic pipe 1.

[0038] The connecting pipe 2 and the limiting ring 505 can limit the rotating cylinder 501, so that the rotating cylinder 501 can rotate normally on the outer surface of the telescopic pipe 1. At the same time, the rotating cylinder 501 will not detach from the telescopic pipe 1, thereby further improving the firmness of the rotating cylinder 501 when limiting the connecting pipe 2 and the insertion pipe 3 through the snap-fit ​​block 504 and the snap-fit ​​groove 502.

[0039] In one embodiment, the elastic limiting component 6 includes a mounting cavity 601, which is located inside the rotating cylinder 501. A torsion spring 602 is fixedly connected between the inner wall of the rotating cylinder 501 and the outer surface of the telescopic tube 1.

[0040] The torsion spring 602 can pull the rotating cylinder 501, so that the rotating cylinder 501 can automatically drive the locking block 504 to move into the locking groove 502. At the same time, because the torsion spring 602 is elastic, when the connected telescopic tube 1 vibrates, the continuous elastic tension of the torsion spring 602 can dynamically compensate for the displacement deviation, so that the locking block 504 always maintains a tight engagement with the locking groove 502. This anti-loosening design based on elastic pre-tightening not only ensures efficient assembly between the connecting tube 2 and the insertion tube 3, but also effectively resists accidental disengagement caused by vibration through the continuously applied radial holding force.

[0041] In one embodiment, for the connecting pipe 2, an arc-shaped limiting groove 603 is provided at the rear end of the connecting pipe 2, and a limiting block 604 is movably connected inside the arc-shaped limiting groove 603. The limiting block 604 is fixedly connected to the inner wall of the rotating cylinder 501.

[0042] When the sealing ring 402 is moved into the sealing groove 401, the rotating cylinder 501 is rotated. The rotating cylinder 501 can drive the limiting block 604 to move inside the arc-shaped limiting groove 603. When the limiting block 604 comes into contact with the inner wall of the arc-shaped limiting groove 603, the rotating cylinder 501 cannot rotate. This also means that the snap-fit ​​block 504 on the rotating cylinder 501 corresponds to the insertion groove 503, so that the snap-fit ​​block 504 can smoothly move into the snap-fit ​​groove 502 through the insertion groove 503.

[0043] In one embodiment, the outer surface of the rotating cylinder 501 is provided with anti-slip grooves 7.

[0044] The anti-slip groove 7 makes it less likely for the hand to slip when the rotating cylinder 501 is rotated. This prevents the sealing ring 402 from failing to move properly into the sealing groove 401 when the rotating cylinder 501 is moved into the sealing groove 401.

[0045] Through the above technical solution, 1. By aligning and inserting the connecting pipe 2 and the insertion pipe 3 on the two telescopic pipes 1, the locking assembly 5 can be completed by rotating it. During this process, the elastic limiting assembly 6 drives the rotating locking assembly 5 to automatically reset and rotate along the outer surface of the connecting pipe 2 and the insertion pipe 3 through traction, so that the rotating locking assembly 5 locks and limits the connecting pipe 2 and the insertion pipe 3. The above setting achieves quick assembly through the combined action of insertion and knob. In reverse operation, the two telescopic pipes 1 can be separated simply by releasing the locking state of the rotating locking assembly 5, thus making the entire installation and disassembly process relatively convenient; 2. By moving the sealing ring 402 to the sealing groove 40 When the telescopic tube 1 is inside the slot 502, the snap-fit ​​block 504 can move into the slot 502 through the insertion groove 503. At this time, the torsion spring 602 drives the snap-fit ​​block 504 to move into the slot 502 through the rotating cylinder 501, and completes the snap-fit ​​limiting of the connecting tube 2 and the insertion tube 3. In the above setting, when the telescopic tube 1 connected together vibrates, the continuous elastic tension of the torsion spring 602 can dynamically compensate for the displacement deviation, so that the snap-fit ​​block 504 always keeps tightly engaged with the slot 502. This anti-loosening design based on elastic pre-tightening not only ensures the efficient assembly between the connecting tube 2 and the insertion tube 3, but also effectively resists the accidental disengagement caused by vibration through the continuously applied radial holding force.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above 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 one or more embodiments or examples.

[0047] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A telescopic cold-insulating PIR pipe splicing device based on snap-locking, comprising a telescopic pipe (1), a connecting pipe (2), and a plug pipe (3), characterized in that, The connecting pipe (2) and the insertion pipe (3) are fixedly connected to both ends of the telescopic pipe (1). A positioning sealing component (4) is provided at the port of the connecting pipe (2) and the insertion pipe (3). A rotating snap-fit ​​component (5) is provided on the outer surface of the connecting pipe (2) and the insertion pipe (3). An elastic limiting component (6) is provided between the rotating snap-fit ​​component (5) and the connecting pipe (2). The connecting pipe (2) and the insertion pipe (3) on the two telescopic pipes (1) are brought into contact so that the connecting pipe (2) and the insertion pipe (3) are connected together by the positioning sealing assembly (4). The elastic limiting assembly (6) is used to drive the rotating snap-fit ​​assembly (5) to rotate so that the rotating snap-fit ​​assembly (5) snaps and limits the connecting pipe (2) and the insertion pipe (3).

2. The telescopic cold-insulating PIR tube splicing device based on snap-locking as described in claim 1, characterized in that, The positioning sealing assembly (4) includes a sealing groove (401), one end of which is connected to a connecting pipe (2), and one end of the insertion pipe (3) is fixedly connected to a sealing ring (402) corresponding to the sealing groove (401). Both the sealing groove (401) and the sealing ring (402) are hexagonal in shape.

3. The telescopic cold-insulating PIR tube splicing device based on snap-locking as described in claim 1, characterized in that, The rotating snap-fit ​​assembly (5) includes a rotating cylinder (501), which is rotatably connected to the outside of the telescopic tube (1). A snap-fit ​​groove (502) is provided on the outside of the insertion tube (3). An insertion groove (503) is provided on the inner wall of the snap-fit ​​groove (502). The insertion groove (503) extends to the outside of the insertion tube (3). A snap-fit ​​block (504) is fixedly connected to the inner wall of the rotating cylinder (501) corresponding to the insertion groove (503) and the snap-fit ​​groove (502).

4. A telescopic cold-insulating PIR tube splicing device based on snap-locking as described in claim 3, characterized in that, The inner wall of the rotating cylinder (501) is in contact with the connecting pipe (2), and a limit ring (505) is provided at one end of the rotating cylinder (501). The limit ring (505) is fixedly connected to the outer surface of the telescopic pipe (1).

5. A telescopic cold-insulating PIR tube splicing device based on snap-locking as described in claim 3, characterized in that, The elastic limiting component (6) includes a mounting cavity (601), which is located inside the rotating cylinder (501). A torsion spring (602) is fixedly connected between the inner wall of the rotating cylinder (501) and the outer surface of the telescopic tube (1).

6. A telescopic cold-insulating PIR tube splicing device based on snap-locking as described in claim 5, characterized in that, The rear end of the connecting pipe (2) is provided with an arc-shaped limiting groove (603), and a limiting block (604) is movably connected inside the arc-shaped limiting groove (603). The limiting block (604) is fixedly connected to the inner wall of the rotating cylinder (501).

7. A telescopic cold-insulating PIR tube splicing device based on snap-locking as described in claim 5, characterized in that, The outer surface of the rotating cylinder (501) is provided with anti-slip grooves (7).

Images