A high-pressure movable elbow structure that is easy to assemble and disassemble

Abstract

This utility model relates to the field of high-pressure movable elbow technology, specifically disclosing a high-pressure movable elbow structure that is easy to assemble and disassemble, including: a bent pipe and a connecting ring. A threaded groove is opened on the outer wall of one side of the bent pipe, and a threaded sleeve is threadedly connected through the threaded groove. A drive sleeve is fixedly installed at one end of the threaded sleeve. Several fixing boxes are evenly fixedly installed on the outer wall of one side of the bent pipe. The connecting pipe is inserted into the bent pipe, and the sealing ring and the retaining ring are in contact. Then, the threaded sleeve is rotated to move the drive sleeve to one side of the elbow, and the drive sleeve is located outside the limiting rod. The limiting rod is inserted into the bent pipe through the compression spring and inserted into the limiting ring. At the same time, the outer end of the drive sleeve is in contact with the sealing gasket, quickly connecting the connecting pipe and the bent pipe. When it is necessary to remove the connecting pipe, the drive threaded sleeve moves in the opposite direction and separates from the limiting rod. Under the reaction force of the spring, the limiting rod and the limiting ring separate, making it easy to remove the connecting pipe, thus facilitating the assembly and disassembly of the elbow.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure movable elbow technology, specifically a high-pressure movable elbow structure that is easy to assemble and disassemble. Background Technology

[0002] As the scale of fracturing operations gradually expands, cluster well fracturing operations are increasing. In the process of cluster well zipper fracturing operations, due to the limitations of the well site and the requirements of the construction scale, multiple 3-inch or 4-inch fracturing pipelines need to be connected in parallel to meet the requirements of on-site operations. The demand for high-pressure manifolds is large, the connections are complex, and the area occupied is large. The complicated pipeline layout slows down the construction cycle and brings more risks of pipeline puncture and leakage. Therefore, it is necessary to develop large-diameter single-channel high-pressure pipelines of 5 inches or more to simplify pipeline connections at the work site and to complete large-scale fracturing operations in cluster wells quickly and efficiently. However, as the specifications increase, the structure of using rolling elements to achieve rotation is no longer suitable due to limitations in the forming method and volume requirements of the elbow structure. Large-diameter high-pressure movable elbows are the core components of large-diameter single-channel high-pressure pipelines, and their development is difficult. The inner diameter of steel ball type rotating movable elbows can only be 4 inches. As the inner diameter increases, the number of steel balls becomes more numerous, which is not conducive to installation and disassembly. When the movable elbow is subjected to high pressure, the steel balls are easily sheared and damaged without any buffer protection under high pressure. In addition, steel ball type rotating movable elbows of 4 inches or more have high rotational friction resistance, making rotation difficult and installation and construction challenging. Utility Model Content

[0003] The purpose of this utility model is to provide a high-pressure movable elbow structure that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure movable elbow structure that is easy to assemble and disassemble, comprising: a bend and a connecting ring, wherein a threaded groove is provided on the outer wall of one side of the bend, and a threaded sleeve is threadedly connected through the threaded groove, a drive sleeve is fixedly installed at one end of the threaded sleeve, and a plurality of fixing boxes are uniformly fixedly installed on the outer wall of one side of the bend, and a limit rod is elastically connected inside the fixing box by a spring, one end of the limit rod is located at the outer end of the fixing box, and the other end can be inserted into the bend, and a retaining ring is fixedly installed on the inner side of one end of the bend; Connecting pipes are fixedly installed at both ends of the connecting ring. A sealing ring is fixedly installed at the end of the connecting pipe away from the connecting ring, and a limit ring is opened on the outer wall of the end of the connecting pipe away from the connecting ring. When the end of the connecting pipe away from the connecting ring is inserted into the bend, the sealing ring and the retaining ring contact each other, and the limit rod is inserted into the limit ring at the same time.

[0005] Preferably, the inner side of the end of the drive sleeve away from the threaded sleeve is provided with a slope, and the outer edges of both ends of the limiting rod are provided with slopes.

[0006] Preferably, a driving block is fixedly sleeved on the outer wall of the threaded sleeve.

[0007] Preferably, the upper and lower ends of the fixing box are provided with through holes, and a number of sliding holes are evenly provided on the side wall of the bent tube, and the sliding holes and the through holes are connected.

[0008] Preferably, the outer wall of the limiting rod is fitted with a fixing ring and a spring, both of which are located inside the fixing box. One end of the spring is fixedly connected to the fixing ring, and the other end is fixedly connected to the outer wall of the limiting rod.

[0009] Preferably, sealing gaskets are fixedly installed on both the left and right sides of the outer end of the connecting ring, and the outer end of the drive sleeve can abut against the sealing gaskets.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention involves inserting one end of the connecting pipe into the bend, allowing the sealing ring and retaining ring to contact. Then, rotating the threaded sleeve moves the drive sleeve to one side of the bend, with the drive sleeve positioned outside the limiting rod. The limiting rod is then inserted into the bend via a compression spring and into the limiting ring. Simultaneously, the outer end of the drive sleeve contacts the sealing gasket, quickly connecting the connecting pipe and the bend. When the connecting pipe needs to be removed, the drive threaded sleeve moves in the opposite direction, separating from the limiting rod. Under the reaction force of the spring, the limiting rod and the limiting ring separate, facilitating the removal of the connecting pipe and thus enabling easy assembly and disassembly of the bend. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of part of the structure of this utility model; Figure 3 This is a schematic diagram showing the unfolded structure of the connecting pipe and the bent pipe of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the fixing box of this utility model; Figure 5 This is a schematic diagram of the bent pipe structure of this utility model.

[0012] In the diagram: 1. Bend; 2. Threaded groove; 3. Threaded sleeve; 4. Drive block; 5. Drive sleeve; 6. Fixing box; 7. Limiting rod; 8. Fixing ring; 9. Spring; 10. Sliding hole; 11. Connecting ring; 12. Connecting pipe; 13. Sealing gasket; 14. Limiting ring; 15. Retaining ring; 16. Sealing ring. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0014] Please see Figures 1-5 This utility model provides a technical solution: a high-pressure movable elbow structure that is easy to assemble and disassemble, including: a bend 1 and a connecting ring 11. A threaded groove 2 is provided on the outer wall of one side of the bend 1, and a threaded sleeve 3 is threadedly connected through the threaded groove 2. The inner wall of the threaded sleeve 3 is threadedly connected to the threaded groove 2. A drive sleeve 5 is fixedly installed at one end of the threaded sleeve 3. A drive block 4 is fixedly sleeved on the outer wall of the threaded sleeve 3. The drive block 4 is a nut. The threaded sleeve 3 can be driven to move on the bend 1 through the threaded groove 2 by connecting a wrench to the drive block 4, while the drive sleeve 5 moves synchronously.

[0015] Several fixing boxes 6 are evenly fixedly installed on one side of the outer wall of the bend 1. A limit rod 7 is elastically connected inside the fixing box 6 by a spring 9. One end of the limit rod 7 is located at the outer end of the fixing box 6, and the other end can be inserted into the bend 1. Through holes are opened at the upper and lower ends of the fixing box 6. Several sliding holes 10 are evenly opened on the side wall of the bend 1. The sliding holes 10 are connected to the through holes. One end of the limit rod 7 is located in the through hole, and the other end passes through the through hole and is inserted into the sliding hole 10. A fixing ring 8 and a spring 9 are sleeved on the outer wall of the limit rod 7. Both the fixing ring 8 and the spring 9 are located inside the fixing box 6. One end of the spring 9 is fixedly connected to the fixing ring 8, and the other end is fixedly connected to the outer wall of the limit rod 7. When the spring 9 is in a balanced state, one end of the limit rod 7 is located inside the sliding hole 10, and the other end protrudes out of the fixing box 6.

[0016] The inner side of the drive sleeve 5 away from the threaded sleeve 3 has a ramp, and the outer edges of both ends of the limit rod 7 have ramps. When the drive threaded sleeve 3 moves, the threaded sleeve 3 moves synchronously with the drive sleeve 5. The ramp of the drive sleeve 5 and the ramp of the limit rod 7 come into contact, thereby applying downward pressure to the limit rod 7. The limit rod 7 moves down through the compression spring 9 and is inserted into the bent tube 1.

[0017] Connecting pipes 12 are fixedly installed at both ends of the connecting ring 11. A sealing ring 16 is fixedly installed at the end of the connecting pipe 12 away from the connecting ring 11. A limiting ring 14 is formed on the outer wall of the end of the connecting pipe 12 away from the connecting ring 11. A slope is formed on the upper edge of the limiting ring 14. A retaining ring 15 is fixedly installed on the inner side of one end of the bent pipe 1. When the end of the connecting pipe 12 away from the connecting ring 11 is inserted into the bent pipe 1, the sealing ring 16 and the retaining ring 15 are in contact. At the same time, the limiting rod 7 is inserted into the limiting ring 14. Sealing gaskets 13 are fixedly installed on both the left and right sides of the outer end of the connecting ring 11. At the same time, the outer end of the driving sleeve 5 abuts against the sealing gasket 13, sealing the connecting pipe 12 and the bent pipe 1.

[0018] In actual use, by inserting one end of the connecting pipe 12 into the bend 1, the sealing ring 16 and the retaining ring 15 come into contact. Then, the threaded sleeve 3 is rotated to move the driving sleeve 5 to one side of the bend 1, with the driving sleeve 5 located outside the limiting rod 7. The limiting rod 7 is then inserted into the bend 1 through the compression spring 9 and into the limiting ring 14. At the same time, the outer end of the driving sleeve 5 contacts the sealing gasket 13, quickly connecting the connecting pipe 12 and the bend 1. When it is necessary to remove the connecting pipe 12, the driving threaded sleeve 3 moves the driving sleeve 5 in the opposite direction and separates it from the limiting rod 7. Under the reaction force of the spring 9, the limiting rod 7 and the limiting ring 14 separate, making it easy to remove the connecting pipe 12.

[0019] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A high-pressure movable elbow structure that is easy to assemble and disassemble, comprising: The bend (1) and connecting ring (11) are characterized in that: a threaded groove (2) is provided on the outer wall of one side of the bend (1), and a threaded sleeve (3) is threadedly connected through the threaded groove (2). A drive sleeve (5) is fixedly installed at one end of the threaded sleeve (3). Several fixed boxes (6) are evenly fixedly installed on the outer wall of one side of the bend (1). A limit rod (7) is elastically connected inside the fixed box (6) through a spring (9). One end of the limit rod (7) is located at the outer end of the fixed box (6), and the other end can be inserted into the bend (1). A retaining ring (15) is fixedly installed on the inner side of one end of the bend (1). Connecting pipes (12) are fixedly installed on both the left and right ends of the connecting ring (11). A sealing ring (16) is fixedly installed on the end of the connecting pipe (12) away from the connecting ring (11). A limiting ring (14) is opened on the outer wall of the end of the connecting pipe (12) away from the connecting ring (11). When the end of the connecting pipe (12) away from the connecting ring (11) is inserted into the bent pipe (1), the sealing ring (16) and the retaining ring (15) come into contact, and at the same time the limiting rod (7) is inserted into the limiting ring (14).

2. The high-pressure movable elbow structure that is easy to assemble and disassemble according to claim 1, characterized in that: The drive sleeve (5) has a ramp on the inner side of the end away from the threaded sleeve (3), and the outer edges of both ends of the limiting rod (7) have ramps.

3. The high-pressure movable elbow structure that is easy to assemble and disassemble according to claim 1, characterized in that: The outer wall of the threaded sleeve (3) is fixedly fitted with a driving block (4).

4. The high-pressure movable elbow structure that is easy to assemble and disassemble according to claim 1, characterized in that: The upper and lower ends of the fixed box (6) are provided with through holes, and a number of sliding holes (10) are evenly provided on the side wall of the bent pipe (1), and the sliding holes (10) and the through holes are connected.

5. The high-pressure movable elbow structure that is easy to assemble and disassemble according to claim 1, characterized in that: The outer wall of the limiting rod (7) is fitted with a fixing ring (8) and a spring (9). The fixing ring (8) and the spring (9) are both located inside the fixing box (6). One end of the spring (9) is fixedly connected to the fixing ring (8), and the other end is fixedly connected to the outer wall of the limiting rod (7).

6. The high-pressure movable elbow structure that is easy to assemble and disassemble according to claim 1, characterized in that: Sealing gaskets (13) are fixedly installed on both the left and right sides of the outer end of the connecting ring (11), and the outer end of the drive sleeve (5) can contact the sealing gaskets (13).

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