A quick-installation pigging cylinder flow guiding and anti-collision device
By designing a quick-installation pig flow guide and anti-collision device, the impact force of the pig is buffered by the buffer component, which solves the problem of the pig colliding with the blind plate during retrieval and achieves stable connection and protection of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川凌耘建科技有限公司
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-31
AI Technical Summary
During retrieval, pigs are prone to collisions with blind flanges, leading to damage, and existing technologies lack effective anti-collision devices.
A quick-installation pigging tube flow guide and anti-collision device was designed, comprising a ball cylinder, a connecting ring, a sealing assembly, and a buffer assembly. It utilizes structures such as an elastic ring, a damping rod, and a sliding plate to buffer the impact force of the pigging tube and reduce the pressure on the cover plate.
It effectively avoids direct impact between the pig and the blind flange, protects the pig and the cover plate, reduces damage, and improves the stability and connectivity of the mounting base.
Smart Images

Figure CN224574311U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of oil and gas pipeline cleaning technology, and in particular relates to a quick-installation pipeline cleaning cylinder flow guiding and anti-collision device. Background Technology
[0002] In the cleaning of oil and gas pipelines, a pig is typically delivered into the pipeline using a pig launcher and receiver to clean the inside of the pipeline. By sending the pig into the pipeline, it is possible to remove accumulated wax, scale, impurities, etc., ensuring the efficiency of oil and gas transportation. At the same time, intelligent pigs can be delivered into the pipeline to detect internal defects, thereby ensuring the safety of pipeline use.
[0003] During the process of cleaning the inside of a pipeline using a pig, the pig is transported by the internal pressure of the pipeline. When it is retrieved through a pig retrieval cylinder after cleaning, the inner diameter of the pig retrieval cylinder is larger than that of the oil and gas pipeline. This reduces the resistance when the pig enters the pig retrieval cylinder, which makes it easier for the pig to collide with the blind flange. This can easily lead to damage to both the pig and the blind flange. To solve the above problems, there is an urgent need for a quick-installing pig retrieval cylinder flow guiding and anti-collision device. Utility Model Content
[0004] The purpose of this utility model is to provide a quick-installation pig flow guide and anti-collision device to solve the problem that the pig is prone to collision with the blind flange when it is being recovered.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick-installation pigging tube flow guiding and anti-collision device, comprising a ball cylinder, one end of which is equipped with a connecting ring; a sealing assembly, which is installed on one side of the connecting ring; and a buffer assembly, which is installed inside the ball cylinder and located on one side of the sealing assembly.
[0006] The buffer assembly includes a mounting base, an elastic ring on one side of the mounting base, a buffer plate on the other side of the elastic ring, and sliders installed on both sides of the elastic ring.
[0007] As a further description of the above technical solution:
[0008] Both the mounting base and the buffer plate have limit grooves on one side, the slider is slidably connected to the limit grooves, and a sliding plate is installed on one side of the buffer plate.
[0009] As a further description of the above technical solution:
[0010] The slide plate is slidably connected to the mounting base through a groove opened in the mounting base. A damping rod is installed on one side of the mounting base, and a second spring is provided on the outside of the damping rod.
[0011] As a further description of the above technical solution:
[0012] The other end of the damping rod is fixedly connected to the buffer plate, and both the buffer plate and the mounting base are slidably connected to the inner wall of the ball cylinder.
[0013] As a further description of the above technical solution:
[0014] The sealing assembly includes a cover plate and a connecting block. Bolts are distributed around the inner circumference of the cover plate, and the cover plate is fixed to the connecting ring by the bolts.
[0015] As a further description of the above technical solution:
[0016] The hinge joint at one end of the cover plate is hinged to the connecting ring through a hinge seat provided on one side of the connecting ring. The connecting block has an insert block slidably installed through a groove opened inside, and a first spring is installed on one side of the insert block.
[0017] As a further description of the above technical solution:
[0018] One end of the first spring is fixedly connected to the connecting block, and a plug rod is installed on one side of the cover plate. One end of the plug rod has an inclined surface, and one side of the plug block has an inclined surface corresponding to the plug rod.
[0019] As a further description of the above technical solution:
[0020] The bottom end of the connecting block is fixedly connected to the outer wall of the mounting base, and the connecting block is slidably connected to the connecting ring through a groove opened inside the connecting ring.
[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0022] 1. In this utility model, when the pig is being retrieved, the buffer plate can block the pig, preventing it from directly impacting the cover plate. At the same time, the elastic ring, the second spring, and the damping rod can reduce the impact force brought by the pig, thereby preventing the pig from being damaged due to excessive impact force. Meanwhile, the elastic ring can deform under compression, causing its two ends to extend outward, thereby squeezing the slide plate and the inner wall of the cylinder, increasing the friction between the two, and thus reducing the force transmitted to the mounting base when the buffer plate is impacted, thereby further protecting the cover plate.
[0023] 2. In this utility model, after the mounting base and buffer plate are placed in the ball cylinder, the mounting base can be initially fixed by inserting the arc end of the insert block into the connecting ring, thus facilitating the installation of the mounting base. At the same time, after the cover plate is closed, the insert rod can squeeze the insert block to further insert it into the connecting ring, thereby increasing the connection between the mounting base and the connecting ring. Furthermore, one side of the mounting base can contact the cover plate, thereby further ensuring the stability of the mounting base. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural diagram of a quick-installation pigging tube flow guiding and anti-collision device.
[0025] Figure 2 This is a three-dimensional schematic diagram of the explosive structure of a quick-installation pigging tube flow guiding and anti-collision device.
[0026] Figure 3 This is an exploded three-dimensional structural diagram of the sealing component in a quick-installation pigging tube diversion and anti-collision device.
[0027] Figure 4 This is a three-dimensional exploded view of the buffer component in a quick-installation pigging tube flow diversion and anti-collision device.
[0028] Figure 5 A quick-installation pigging cylinder flow guiding and anti-collision device Figure 3 A magnified structural diagram of point A in the middle.
[0029] Legend:
[0030] 1. Ball tube; 2. Connecting ring; 3. Sealing assembly; 31. Cover plate; 32. Bolt; 33. Insert block; 34. Connecting block; 35. Insert rod; 36. First spring; 4. Buffer assembly; 41. Mounting base; 42. Slider; 43. Elastic ring; 44. Slide plate; 45. Buffer plate; 46. Limiting groove; 47. Damping rod; 48. Second spring. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] In its specific implementation, such as Figures 1-5This utility model provides a technical solution: a quick-installation pigging tube flow guiding and anti-collision device, including a ball cylinder 1, with a connecting ring 2 installed at one end of the ball cylinder 1; a sealing component 3, which is installed on one side of the connecting ring 2; and a buffer component 4, which is installed inside the ball cylinder 1 and is located on one side of the sealing component 3.
[0033] The buffer assembly 4 includes a mounting base 41, an elastic ring 43 on one side of the mounting base 41, a buffer plate 45 on the other side of the elastic ring 43, sliders 42 on both sides of the elastic ring 43, a limiting groove 46 on one side of both the mounting base 41 and the buffer plate 45, the sliders 42 and the limiting grooves 46 are slidably connected, a sliding plate 44 is installed on one side of the buffer plate 45, the sliding plate 44 is slidably connected to the mounting base 41 through a groove in the mounting base 41, a damping rod 47 is installed on one side of the mounting base 41, a second spring 48 is provided on the outside of the damping rod 47, the other end of the damping rod 47 is fixedly connected to the buffer plate 45, and both the buffer plate 45 and the mounting base 41 are slidably connected to the inner wall of the ball cylinder 1.
[0034] Specifically, when the pig is discharged from the oil and gas pipeline into the cylinder 1, if the pig moves too fast and rushes towards the cover plate 31, it can be blocked by the buffer plate 45. At the same time, when the buffer plate 45 is impacted by the pig, it can compress the elastic ring 43, the second spring 48 and the damping rod 47. Thus, the elastic ring 43, the second spring 48 and the damping rod 47 buffer the buffer plate 45 and the pig. The damping rod 47 is a hydraulic damping device that can generate a certain resistance when subjected to pressure, thereby reducing the impact force. At the same time, the elastic ring 43 deforms after being compressed and expands to both ends. Thus, the elastic ring 43 compresses the sliding plate 44 and the inner wall of the cylinder 1 to reduce the pressure on the mounting base 41 and thus reduce the pressure on the cover plate 31.
[0035] like Figure 3 and Figure 5 As shown, the sealing assembly 3 includes a cover plate 31 and a connecting block 34. Bolts 32 are distributed around the inner circumference of the cover plate 31. The cover plate 31 is fixed to the connecting ring 2 by the bolts 32. The hinge joint at one end of the cover plate 31 is hinged to the connecting ring 2 by a hinge seat provided on one side of the connecting ring 2. The connecting block 34 has an insert block 33 slidably installed through a groove opened inside. A first spring 36 is installed on one side of the insert block 33. One end of the first spring 36 is fixedly connected to the connecting block 34. An insert rod 35 is installed on one side of the cover plate 31. One end of the insert rod 35 has a bevel, and the side of the insert block 33 has a bevel corresponding to the insert rod 35. The bottom end of the connecting block 34 is fixedly connected to the outer wall of the mounting base 41. The connecting block 34 is slidably connected to the connecting ring 2 through a groove opened inside the connecting ring 2.
[0036] Specifically, during installation, the mounting base 41 and the buffer plate 45 are placed into the ball cylinder 1. At the same time, the connecting block 34 is aligned with the groove on the surface of the connecting ring 2, and the connecting block 34 is pushed into the groove on the surface of the connecting ring 2. After the connecting block 34 is pushed in, the arc end of the insert block 33 can be inserted into the connecting ring 2 for initial positioning. Then, the cover plate 31 and the connecting ring 2 are fixed together with bolts 32. As the cover plate 31 moves, the insert rod 35 can be inserted into the connecting block 34 and contact the insert block 33. Under the action of the insert rod 35, the insert block 33 extends further, thereby further connecting the connecting block 34 and the ball cylinder 1.
[0037] Working principle: During installation, the mounting base 41 and buffer plate 45 are placed into the ball cylinder 1. The groove on the surface of the connecting block 34 corresponds to the groove on the surface of the connecting ring 2. The connecting block 34 is pushed into the groove on the surface of the connecting ring 2. After the connecting block 34 is pushed in, the arc end of the insert 33 is inserted into the connecting ring 2. Then, the cover plate 31 and the connecting ring 2 are fixed together with bolts 32. As the cover plate 31 moves, the insert rod 35 is inserted into the connecting block 34 and contacts the insert block 33. Under the action of the insert rod 35, the insert... Block 33 extends further. When the pig is discharged from the oil and gas pipeline and enters the ball cylinder 1, if the pig moves too fast and rushes towards the cover plate 31, it can be blocked by the buffer plate 45. When the buffer plate 45 is impacted by the pig, it can compress the elastic ring 43, the second spring 48 and the damping rod 47. After being compressed, the elastic ring 43 deforms and expands to both ends. The pressure on the mounting base 41 is reduced by the compression of the sliding plate 44 and the inner wall of the ball cylinder 1 by the elastic ring 43, thereby reducing the pressure on the cover plate 31.
[0038] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0039] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.
[0040] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0041] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A quick-installation type pipeline cleaning cylinder flow guiding and anti-collision device, characterized in that, include: A ball tube (1), with a connecting ring (2) installed at one end; A sealing assembly (3) is installed on one side of the connecting ring (2); A buffer assembly (4) is installed inside the ball cylinder (1) and is located on one side of the sealing assembly (3); The buffer assembly (4) includes a mounting base (41), an elastic ring (43) is provided on one side of the mounting base (41), a buffer plate (45) is provided on the other side of the elastic ring (43), and sliders (42) are installed on both sides of the elastic ring (43).
2. The quick-installation pigging cylinder flow guiding and anti-collision device according to claim 1, characterized in that, Limiting grooves (46) are provided on one side of the mounting base (41) and the buffer plate (45). The slider (42) is slidably connected to the limiting groove (46). A sliding plate (44) is installed on one side of the buffer plate (45).
3. The quick-installation pigging tube flow guiding and anti-collision device according to claim 2, characterized in that, The slide plate (44) is slidably connected to the mounting base (41) through a groove opened in the mounting base (41). A damping rod (47) is installed on one side of the mounting base (41), and a second spring (48) is provided on the outside of the damping rod (47).
4. The quick-installation pigging cylinder flow guiding and anti-collision device according to claim 3, characterized in that, The other end of the damping rod (47) is fixedly connected to the buffer plate (45), and both the buffer plate (45) and the mounting base (41) are slidably connected to the inner wall of the ball cylinder (1).
5. The quick-installation pigging cylinder flow guiding and anti-collision device according to claim 1, characterized in that, The sealing assembly (3) includes a cover plate (31) and a connecting block (34). Bolts (32) are distributed around the inner circumference of the cover plate (31), and the cover plate (31) is fixed to the connecting ring (2) by the bolts (32).
6. The quick-installation pigging cylinder flow guiding and anti-collision device according to claim 5, characterized in that, The hinge joint at one end of the cover plate (31) is hinged to the connecting ring (2) through the hinge seat provided on one side of the connecting ring (2). The connecting block (34) has a plug (33) slidably installed through the groove opened inside. A first spring (36) is installed on one side of the plug (33).
7. A quick-installation pigging cylinder flow guiding and anti-collision device according to claim 6, characterized in that, One end of the first spring (36) is fixedly connected to the connecting block (34). A plug rod (35) is installed on one side of the cover plate (31). One end of the plug rod (35) is provided with an inclined surface, and one side of the plug block (33) is provided with an inclined surface corresponding to the plug rod (35).
8. A quick-installation pigging tube flow guiding and anti-collision device according to claim 6, characterized in that, The bottom end of the connecting block (34) is fixedly connected to the outer wall of the mounting base (41), and the connecting block (34) is slidably connected to the connecting ring (2) through the groove opened in the connecting ring (2).