Pipeline connecting device
By designing a pipeline connection device with stress joints, metal cards and displacement groove structures, the problem of large displacement requirements and liquid leakage in the prior art is solved, and flexible connection and axial displacement of the pipeline are realized, effectively resisting external impacts and reducing the probability of fatigue damage.
Patent Information
- Application Number
- CN202421729312.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing pipeline connection devices cannot meet the requirements of large displacement, and may cause liquid leakage under high pressure, cannot be flexible, cannot adapt to the large deviation and displacement of the pipeline axial and angular angular pipeline, and may be loose when vibration and pressure change, and cannot effectively resist external impacts and collisions.
A pipe connection device is designed, including a main pipe sleeve, metal card and displacement groove structure. Through the design of stress joints and stress shells, flexible connection and axial displacement of the pipe are realized, and through the limit rod and limit sleeve structure, the pipe is ensured not loose during operation.
The device can meet the requirements of large displacement, avoid liquid leakage, adapt to the deviation and displacement of the axial and angular pipes, effectively resist external impacts and collisions, and reduce the probability of stress concentration and fatigue damage at the pipe connections.
Smart Images
Figure CN222798396U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline connection, in particular to a pipeline connection device. Background Art
[0002] Common pipe connection devices on the market either have axial limits at both ends (axial compensation is not possible, and the compensation does not exceed 5mm), or have no limits at both ends (easy to be pulled out and fail due to displacement). In addition, there is another type of pipe axial compensation product on the market (such as arc pipes with flanges on both ends). The axial compensation amount of a single product is generally not more than 20mm, which takes up space and is troublesome to install.
[0003] However, in the prior art, for example, China Publication No.: CN1161105000A, "A Pipeline Connection Device", the invention provides a pipeline connection device, which relates to the field of chemical process pipelines. The pipeline connection device includes: at least one hose, the liquid inlet end of the hose is provided with an internal threaded joint, the liquid outlet end of the hose is provided with an external threaded joint, and multiple hoses are threadedly connected through the internal threaded joint and the external threaded joint; a first circular joint, the first circular joint is used to connect the internal threaded joint of the liquid inlet end of the hose to the liquid outlet pipe; a second circular joint, the second circular joint is used to connect the external threaded joint of the liquid outlet end of the hose to the liquid inlet pipe. The solution of this invention improves the safety of the device, saves processing steps, is quick and convenient to use, improves the efficiency of debugging work, and is reusable, reducing the cost of use.
[0004] However, this device does not have a multi-sealing skirt structure and cannot meet the requirements of large displacement. It also does not have a metal card and a displacement groove structure. If the pipeline pressure is high, liquid leakage may occur in the pipe. It cannot be flexibly connected and cannot adapt to large axial and angular deviations and displacements of the pipeline. No further clamping and fixing structure is provided. The pipeline may loosen during operation due to vibration, pressure changes and other factors. It cannot effectively resist external shocks and collisions and prevent damage to the pipeline joints. The stress at the pipeline joints is concentrated, increasing the probability of fatigue damage. Utility Model Content
[0005] The purpose of the utility model is to solve the problems existing in the prior art, that the requirements for large displacement cannot be met, and no metal card and displacement groove structure are set. If the pipeline pressure is large, liquid leakage may occur in the pipe. The connection cannot be flexibly connected and cannot adapt to large axial and angular deviations and displacements of the pipeline. The pipeline may become loose due to vibration, pressure changes and other factors during operation. It cannot effectively resist external impacts and collisions, prevent damage to the pipeline connection, and cause stress concentration at the pipeline connection, thereby increasing the probability of fatigue damage.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pipeline connection device, including a main pipe sleeve, a stress seam is provided on the main pipe sleeve, two stress shells are fixedly connected to the top of the main pipe sleeve, an external connecting rod is fixedly embedded in the interior of the stress shell, an internal embedding groove is provided on the stress shell, a bolt is connected to the internal thread of one of the external connecting rods, and the internal rotation of the other external connecting rod is connected to the outer surface of the bolt, one end of the bolt is fixedly connected to a hexagonal head, the outer surface of the hexagonal head is arranged in the internal embedding groove, and the inner surface of the main pipe sleeve is fixedly embedded with a metal It is a card, and the inner surface of the metal card is provided with multiple displacement grooves. After tightening, because the outer surface of the pipe is sleeved with the metal card, and the metal card is provided with corresponding displacement grooves, one of the two pipes can be axially displaced, while the other cannot be axially displaced. This is to solve the problem that the pipe connection process must be fixed and can meet the axial displacement of the pipe system when the hull is deformed by large deflection, as well as the actual needs of thermal expansion and contraction of the pipe system or hull deformation. If the pipeline pressure is large, a metal card can be installed to avoid leakage, but the inner diameter of the card is larger than the inner diameter of the sealing ring when tightened.
[0007] As a preferred embodiment, the bottom of the main pipe sleeve is fixedly connected to a base, the inner surface of the base is fixedly connected to a limiting rod, the outer surface of the limiting rod is movably sleeved with two limiting sleeves, and the limiting sleeves can only move along the axial direction of the limiting rod.
[0008] As a preferred implementation, the top of the limiting sleeve is fixedly connected to a first connecting rod, one end of the first connecting rod away from the limiting sleeve is fixedly connected to a clamping plate, and the limiting sleeve moves along with the first connecting rod.
[0009] As a preferred embodiment, first through slots are provided on both sides of the base, the outer surface of the first connecting rod is arranged inside the first through slot, and the first connecting rod moves through the first through slot.
[0010] As a preferred embodiment, the inner surface of the base is rotatably connected to a threaded rod and extends one end, the threads on both sides of the threaded rod rotate in opposite directions, and the outer surface of the threaded rod is threadedly connected to two internal threaded sleeves. Because the threads on both sides of the threaded rod rotate in opposite directions, the two internal threaded sleeves move in opposite directions.
[0011] As a preferred embodiment, a second connecting rod is fixedly connected to the top of the internal threaded sleeve, and one end of the second connecting rod away from the internal threaded sleeve is fixedly connected to the bottom of the clamping plate, and the internal threaded sleeve drives the second connecting rod to move together.
[0012] As a preferred embodiment, second through slots are provided on both sides of the base, the outer surface of the second connecting rod is arranged inside the second through slot, and the second connecting rod moves through the second through slot.
[0013] As a preferred embodiment, one end of the threaded rod is fixedly connected to a rotating block, and a rocker is movably embedded inside the rotating block, so that the threaded rod can rotate inside the base through the rocker and the rotating block.
[0014] Compared with the prior art, the advantages and positive effects of the utility model are:
[0015] 1. The utility model is provided with a multi-sealing skirt structure to meet the requirements of large displacement, and a metal card and a displacement groove structure are provided to avoid the situation where the pipeline pressure is large and the liquid in the pipeline leaks. It can be flexibly connected and can adapt to large axial and angular deviations and displacements of the pipeline.
[0016] 2. The utility model is provided with a further clamping and fixing structure to prevent the pipeline from loosening due to vibration, pressure change and other factors during operation, can effectively resist external impact and collision, prevent damage to the pipeline connection, avoid stress concentration at the pipeline connection, and reduce the probability of fatigue damage. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A schematic cross-sectional structure diagram of a pipeline connecting device provided by the utility model;
[0018] Figure 2 A three-dimensional structural schematic diagram of a pipeline connecting device provided by the utility model;
[0019] Figure 3 A schematic diagram of the disassembled structure of a pipeline connecting device provided by the utility model;
[0020] Figure 4 A schematic cross-sectional structure diagram of a base of a pipe connection device provided by the utility model;
[0021] Figure 5 A pipeline connecting device provided by the utility model Figure 2 Schematic diagram of the enlarged structure of A.
[0022] Legend:
[0023] 1. Main pipe sleeve; 2. Stress seam; 3. Load-bearing shell; 4. External connecting rod; 5. Embedded groove; 6. Bolt; 7. Hexagon socket head; 8. Metal card; 9. Displacement groove; 10. Base; 11. Limit rod; 12. Limit sleeve; 13. First connecting rod; 14. Clamping plate; 15. First through groove; 16. Threaded rod; 17. Internally threaded sleeve; 18. Second connecting rod; 19. Second through groove; 20. Rotating block; 21. Rocker. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1-5 The utility model provides a technical solution: a pipeline connection device, characterized in that it includes a main pipe sleeve 1, a stress seam 2 is provided on the main pipe sleeve 1, two stress shells 3 are fixedly connected to the top of the main pipe sleeve 1, an external connecting rod 4 is fixedly embedded inside the stress shell 3, an embedded groove 5 is provided on the stress shell 3, a bolt 6 is connected to the internal thread of an external connecting rod 4, and the internal rotation of the other external connecting rod 4 is connected to the outer surface of the bolt 6, one end of the bolt 6 is fixedly connected to a hexagonal head 7, the outer surface of the hexagonal head 7 is arranged inside the embedded groove 5, a metal card 8 is fixedly embedded on the inner surface of the main pipe sleeve 1, and a plurality of displacement grooves 9 are provided on the inner surface of the metal card 8, the hexagonal head 7 rotates inside the embedded groove 5, and can drive the bolt 6 to rotate inside an external connecting rod 4, and the rotating thread will drive the other external connecting rod 4, so that the two stress shells 3 are close to each other, so that the stress seam 2 will be reduced, and the main pipe sleeve 1 will tighten and fix the two internal pipes, and a plurality of sealing skirts are provided on the movable end of the device, which can be unlimitedly increased according to the on-site working conditions to meet the requirements of large displacement.
[0026] like Figure 1-5 As shown, the bottom of the main pipe sleeve 1 is fixedly connected to a base 10, the inner surface of the base 10 is fixedly connected to a limiting rod 11, the outer surface of the limiting rod 11 is movably sleeved with two limiting sleeves 12, and the limiting sleeves 12 can only move along the axial direction of the limiting rod 11.
[0027] like Figure 1-5 As shown, the top of the limiting sleeve 12 is fixedly connected to a first connecting rod 13 , and one end of the first connecting rod 13 away from the limiting sleeve 12 is fixedly connected to a clamping plate 14 , so that the limiting sleeve 12 moves along with the first connecting rod 13 .
[0028] like Figure 1-5As shown, first through slots 15 are formed on both sides of the base 10 , and the outer surface of the first connecting rod 13 is arranged inside the first through slot 15 , and the first connecting rod 13 moves through the first through slot 15 .
[0029] like Figure 1-5 As shown, the inner surface of the base 10 is rotatably connected to a threaded rod 16 and extends one end. The threads on both sides of the threaded rod 16 rotate in opposite directions. The outer surface of the threaded rod 16 is threadedly connected to two internal threaded sleeves 17. The rotating threads will drive the two internal threaded sleeves 17.
[0030] like Figure 1-5 As shown, a second connecting rod 18 is fixedly connected to the top of the internal threaded sleeve 17, and one end of the second connecting rod 18 away from the internal threaded sleeve 17 is fixedly connected to the bottom of the clamping plate 14, and the internal threaded sleeve 17 will drive the second connecting rod 18 to move together.
[0031] like Figure 1-5 As shown, second through slots 19 are provided on both sides of the base 10 , and the outer surface of the second connecting rod 18 is arranged inside the second through slot 19 , and the second connecting rod 18 moves through the second through slot 19 .
[0032] like Figure 1-5 As shown, one end of the threaded rod 16 is fixedly connected to a rotating block 20 , and a rocker 21 is movably embedded inside the rotating block 20 . The threaded rod 16 can be rotated inside the base 10 through the rocker 21 and the rotating block 20 .
[0033] Working principle: First, place the two pipes to be connected inside the main pipe sleeve 1, and then let the hexagon head 7 rotate inside the embedded groove 5, which can drive the bolt 6 to rotate inside an external rod 4. The rotating thread will drive the other external rod 4, so that the two stress shells 3 are close to each other, so that the stress seam 2 will be reduced, and the main pipe sleeve 1 will tighten and fix the two internal pipes. After tightening, because the outer surface of the pipe is sleeved with a metal card 8, and the metal card 8 is provided with a corresponding displacement groove 9, one of the two pipes can be axially displaced, and the other cannot be axially displaced, which not only prevents the product from being displaced over a large distance, but also ensures the flexibility of the pipe connection, and adapts to large axial and angular deviations and displacements of the pipe. Then, the rocker 21 and the rotating block 20 can be used to rotate the threaded rod 16 inside the base 10. The rotating thread will drive the two internal thread sleeves 17. Since the threads on both sides of the threaded rod 16 rotate in opposite directions, the two internal thread sleeves 17 move in opposite directions. The limiting sleeve 12 can only move along the axial direction of the limiting rod 11. Therefore, when the two internal thread sleeves 17 approach each other, the two first connecting rods 13 and the two second connecting rods 18 will approach each other inside the first through groove 15 and the second through groove 19 respectively. At the same time, the two clamping plates 14 will also approach each other, and further clamp and fix the main pipe sleeve 1 and the internal pipe, which can effectively resist external impact and collision, prevent damage to the pipe connection, avoid stress concentration at the pipe connection, and reduce the probability of fatigue damage. In order to meet the system pipeline pressure and product life requirements, the shell of the patented product can be a metal shell or a material with a certain strength, and the shell has folded edges at both ends.
[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A pipeline connecting device, characterized in that: The invention comprises a main pipe sleeve (1), wherein a stress seam (2) is provided on the main pipe sleeve (1), two stress-bearing shells (3) are fixedly connected to the top of the main pipe sleeve (1), an external connecting rod (4) is fixedly embedded inside the stress-bearing shell (3), an internal embedding groove (5) is provided on the stress-bearing shell (3), a bolt (6) is threadedly connected to the inside of one of the external connecting rods (4), and the inside of the other external connecting rod (4) is rotatably connected to the outer surface of the bolt (6), one end of the bolt (6) is fixedly connected to a hexagonal head (7), and the outer surface of the hexagonal head (7) is arranged inside the embedded groove (5), a metal card (8) is fixedly embedded on the inner surface of the main pipe sleeve (1), and a plurality of displacement grooves (9) are provided on the inner surface of the metal card (8).
2. A pipe connection device according to claim 1, characterized in that: The bottom of the main pipe sleeve (1) is fixedly connected to a base (10), the inner surface of the base (10) is fixedly connected to a limit rod (11), and the outer surface of the limit rod (11) is movably sleeved with two limit sleeves (12).
3. A pipe connection device according to claim 2, characterized in that: The top of the limiting sleeve (12) is fixedly connected to a first connecting rod (13), and one end of the first connecting rod (13) away from the limiting sleeve (12) is fixedly connected to a clamping plate (14).
4. A pipe connection device according to claim 3, characterized in that: First through slots (15) are provided on both sides of the base (10), and the outer surface of the first connecting rod (13) is arranged inside the first through slot (15).
5. A pipe connection device according to claim 4, characterized in that: The inner surface of the base (10) is rotatably connected to a threaded rod (16) and extends out at one end. The threads on both sides of the threaded rod (16) rotate in opposite directions. The outer surface of the threaded rod (16) is threadedly connected to two internal threaded sleeves (17).
6. A pipe connection device according to claim 5, characterized in that: A second connecting rod (18) is fixedly connected to the top of the internally threaded sleeve (17), and one end of the second connecting rod (18) away from the internally threaded sleeve (17) is fixedly connected to the bottom of the clamping plate (14).
7. A pipe connection device according to claim 6, characterized in that: Second through slots (19) are provided on both sides of the base (10), and the outer surface of the second connecting rod (18) is arranged inside the second through slot (19).
8. A pipe connection device according to claim 5, characterized in that: One end of the threaded rod (16) extending outward is fixedly connected to a rotating block (20), and a rocker (21) is movably embedded inside the rotating block (20).