A hollow bend

Abstract

The utility model relates to the field of pipeline connecting parts, concretely to a hollow elbow, including right angle elbow, positioning flange, a plurality of positioning flanges are arranged respectively in both ends of right angle elbow, a plurality of hollow grooves are set up on the circumference of positioning flange, a plurality of locking holes are set up on the circumference of positioning flange, first guide pipe, first guide pipe sets up on the positioning flange of right angle elbow, linear pipe fitting, linear pipe fitting includes linear pipeline, second guide pipe and auxiliary positioning column, one end of linear pipeline sets up the positioning flange of same structure above, second guide pipe sets up on the positioning flange of one end of linear pipeline, and second guide pipe is set in the inner wall of first guide pipe, guide sealing sleeve, guide sealing sleeve is established on the outside wall of first guide pipe, locking piece. The positioning flange with a plurality of hollow grooves, reduce the overall weight of elbow, set up simultaneously with the auxiliary positioning linear pipe fitting, simplify the installation process.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection components, and in particular to a hollow elbow. Background Technology

[0002] Pipeline transportation is a method of transporting liquids or gases over long distances through closed pipelines. It is mainly used for fluid materials such as petroleum, natural gas, and chemical products, and has advantages such as large transport capacity, strong continuity, and high safety.

[0003] Pipeline transportation is constrained by the designed route. When the pipeline needs to bend, elbows are required for connection. At this time, elbows need to be installed to change the pipeline route and conform to the original pipeline design.

[0004] The existing elbows are integrally cast, and pipe connection flanges are welded to both ends of the elbows. The existing flanges are solid, which increases the overall weight of the elbows and the intensity of personnel handling. At the same time, during subsequent pipe installation, multiple personnel are required to position the straight pipes to ensure that one end of the elbow is on the same axis as the straight pipe to avoid leakage at the pipe connection. Therefore, personnel often need to twist the straight pipes multiple times and set up corresponding fixing devices, which makes the installation time too long. Utility Model Content

[0005] This utility model provides a hollow elbow, wherein the elbow is provided with a positioning flange with multiple hollow grooves, which reduces the overall weight of the elbow and facilitates later transportation and handling. At the same time, it is provided with an auxiliary positioning straight pipe fitting, which simplifies the installation process and shortens the installation time.

[0006] To achieve the above objectives, this utility model provides a hollow elbow, comprising: A right-angle elbow, wherein the right-angle elbow is L-shaped; Positioning flanges, a plurality of positioning flanges are respectively disposed at both ends of the right-angle elbow, a plurality of hollow grooves are formed on the circumference of the positioning flanges, a plurality of locking holes are formed on the circumference of the positioning flanges, and a locking hole is provided between two adjacent hollow grooves; A first guide tube is disposed on the positioning flange of the right-angle bend, and multiple guide grooves are formed on the circumference of the first guide tube, the guide grooves being L-shaped; A straight pipe fitting, comprising a straight pipe, a second guide pipe, and auxiliary positioning posts, wherein one end of the straight pipe is provided with the positioning flange of the same structure as described above, the second guide pipe is provided on the positioning flange at one end of the straight pipe, the second guide pipe is sleeved on the inner wall of the first guide pipe, and a plurality of auxiliary positioning posts are provided on the outer circumference of the second guide pipe, the auxiliary positioning posts cooperating with the guide groove; A guide sealing sleeve is provided with multiple locking cylinders on its outer circumference. Each locking cylinder has a hollow locking hole. The guide sealing sleeve is located on the outer wall of the first guide tube. Both ends of the guide sealing sleeve are in contact with the right-angle elbow positioning flange and the straight pipe positioning flange, respectively. A locking component is inserted sequentially into the locking holes of the right-angle elbow positioning flange, the locking hole of the locking cylinder, and the locking hole of the straight pipe positioning flange to lock the right-angle elbow positioning flange, the guide sealing sleeve, and the straight pipe positioning flange.

[0007] Furthermore, a plurality of guide blocks are circumferentially arranged on the outer wall of the first guide tube, and a first positioning hole is provided at one end of each guide block.

[0008] Furthermore, the inner wall of the guide sealing sleeve is provided with multiple guide seats, and a positioning groove is formed on the guide seat. The guide block cooperates with the positioning groove. A second positioning hole is provided at one end of the positioning groove. The outer wall of the guide sealing sleeve is provided with multiple positioning pin holes. The positioning pin holes, the first positioning hole and the second positioning hole are interconnected.

[0009] Furthermore, the hollow elbow also includes a positioning component, which includes a positioning pin. One end of the positioning pin is fixed to the first guide tube by being inserted sequentially into the positioning pin hole, the first positioning hole, and the second positioning hole, thereby assisting in fixing the position of the guide sealing sleeve.

[0010] Furthermore, a first sealing ring groove is provided at one end of the second guide tube near the straight pipe fitting, and a second sealing ring groove is provided on the positioning flange of the straight pipe fitting, with the first sealing ring groove corresponding to the second sealing ring groove.

[0011] Compared with the prior art, the hollow elbow according to an embodiment of the present invention has positioning flanges at both ends of the right-angle elbow, and multiple hollow grooves are provided on the circumference of the positioning flanges. The hollow grooves facilitate personnel transfer and handling, and are suitable for manual handling and tool hooking. The positioning flange of the right-angle elbow is provided with a first guide tube, and a straight pipe fitting and a guide sealing sleeve are also provided. The straight pipe fitting includes a straight pipe, a second guide tube, and an auxiliary positioning post. The auxiliary positioning post slides in the guide groove, so that the first guide tube and the second guide tube cooperate to assist the straight pipe in being installed into the right-angle elbow, thereby saving the time of aligning the straight pipe into the right-angle elbow and saving the overall installation time. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall assembly structure of a hollow elbow according to the present invention; Figure 2 This is an exploded structural diagram of a hollowed-out elbow according to the present invention; Figure 3 This is a structural schematic diagram of a right-angle elbow in a hollowed-out elbow according to this utility model; Figure 4 for Figure 3 A magnified view of a portion of region A in the middle; Figure 5 This is a structural schematic diagram of a straight pipe fitting in a hollowed-out elbow according to this utility model; Figure 6 This is a schematic diagram of the structure of a guide sealing sleeve in a hollow elbow according to the present invention; Figure 7 This is a first-view transverse cross-sectional structural diagram of a hollowed-out elbow according to the present invention; Figure 8 for Figure 7 A magnified view of a portion of region B in the middle; Figure 9 This is a schematic diagram of the second-view transverse cross-sectional structure of a hollowed-out elbow according to this utility model; and Figure 10 for Figure 9 A magnified view of a portion of region C.

[0013] Figure label: 1000. Right-angle elbow; 2000. Positioning flange; 2100. Guide groove; 2200. Locking hole; 3000. First guide tube; 3100. Guide groove; 3200. Guide block; 3210. First positioning hole; 4000. Straight pipe fitting; 4100. Straight pipe; 4200. Second guide pipe; 4300. Auxiliary positioning post; 5000. Guide sealing sleeve; 5100. Locking cylinder; 5200. Locating pin hole; 5300. Guide seat; 5310. Locating groove; 5320. Second locating hole; 6000. Locking components; 7000. Positioning components; 8100. First sealing ring groove; 8200. Second sealing ring groove. Detailed Implementation

[0014] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0015] like Figures 1-10 As shown, a hollow elbow according to an embodiment of the present utility model includes: Right-angle elbow 1000, positioning flange 2000, first guide tube 3000, straight pipe fitting 4000, guide sealing sleeve 5000, and locking component 6000; Multiple positioning flanges 2000 are respectively set at both ends of the right angle elbow 1000. Multiple hollow grooves 2100 are opened on the circumference of the positioning flange 2000, and multiple locking holes 2200 are opened on the circumference of the positioning flange 2000. Locking holes 2200 are provided between two adjacent hollow grooves 2100. The first guide tube 3000 is provided with a positioning flange 2000 for a right-angle bend 1000. Multiple guide grooves 3100 are formed on the circumference of the first guide tube 3000, and the guide grooves 3100 are L-shaped. The straight pipe fitting 4000 includes a straight pipe 4100, a second guide pipe 4200, and auxiliary positioning posts 4300. One end of the straight pipe 4100 is provided with a positioning flange 2000 of the same structure as described above. The second guide pipe 4200 is provided on the positioning flange 2000 at one end of the straight pipe 4100. The second guide pipe 4200 is sleeved on the inner wall of the first guide pipe 3000. Multiple auxiliary positioning posts 4300 are provided on the outer circumference of the second guide pipe 4200. The auxiliary positioning posts 4300 cooperate with the guide groove 3100. Multiple locking cylinders 5100 are provided on the outer circumference of the guide sealing sleeve 5000. Hollow locking holes 2200 are provided on the locking cylinders 5100. The guide sealing sleeve 5000 is located on the outer wall of the first guide tube 3000. The two ends of the guide sealing sleeve 5000 are in contact with the positioning flange 2000 of the right angle elbow 1000 and the positioning flange 2000 of the straight pipe 4100, respectively. Locking component 6000 is inserted sequentially into the locking holes 2200 of the right-angle elbow 1000 positioning flange 2000, the locking holes 2200 of the locking cylinder 5100, and the locking holes 2200 of the straight pipe 4100 positioning flange 2000, thereby locking the right-angle elbow 1000 positioning flange 2000, the guide sealing sleeve 5000, and the straight pipe 4100 positioning flange 2000. In the manufacture of a hollow elbow of this utility model, the positioning flange 2000 is provided with multiple hollow grooves 2100, thereby reducing the weight of the positioning flange 2000 and thus reducing the weight of the overall device, while reducing costs. When transporting the elbow to a truck later, the user only needs to pass the lifting hook through the hollow groove 2100, which is convenient for personnel to load the truck. In the later pipeline installation, the hollow groove 2100 is convenient for personnel to handle by hand. When installing a straight pipe 4100 using the hollow elbow of this utility model, firstly, the guide sealing sleeve 5000 is fitted onto the first guide tube 3000 of the right-angle elbow 1000. At this time, the user controls the second guide tube 4200 of the straight pipe 4100 to approach the first guide tube 3000 of the right-angle elbow 1000 until the auxiliary positioning post 4300 on the outer wall of the second guide tube 4200 is inserted into the guide groove 3100 of the first guide tube 3000. Then, the straight pipe 4100 is moved further so that the second guide tube 4200 penetrates into the inner wall of the first guide tube 3000, and the first guide tube 3000 contacts the positioning flange 2000 of the straight pipe 4100. At this time, the auxiliary positioning post 4300 is located at the end of the guide groove 3100. Then, the straight pipe is rotated. 4100, causing the auxiliary positioning pin 4300 to screw into the L end of the guide groove 3100, thereby locking the second guide tube 4200, and further assisting in locking the straight pipe 4100. After rotation, the locking hole 2200 of the positioning flange 2000 of the straight pipe 4100 is aligned with the locking hole 2200 of the positioning flange 2000 of the right angle elbow 1000. At this time, the user needs to manually rotate the guide sealing sleeve 5000 so that the locking hole 2200 of the locking cylinder 5100 of the guide sealing sleeve 5000 is aligned with the locking hole 2200 of the positioning flange 2000 of the straight pipe 4100 and the locking hole 2200 of the positioning flange 2000 of the right angle elbow 1000, respectively. The user then inserts and tightens the locking part 6000, thereby locking the right angle elbow 1000 and the straight pipe 4100.

[0016] Furthermore, such as Figure 3 and Figure 4 As shown, multiple guide blocks 3200 are arranged circumferentially on the outer side wall of the first guide tube 3000, and a first positioning hole 3210 is provided at one end of the guide block 3200.

[0017] Furthermore, such as Figure 6 , Figure 7 and Figure 8As shown, the inner wall of the guide sealing sleeve 5000 is provided with multiple guide seats 5300, and the guide seats 5300 are provided with positioning grooves 5310. The guide block 3200 cooperates with the positioning grooves 5310. One end of the positioning groove 5310 is provided with a second positioning hole 5320. The outer wall of the guide sealing sleeve 5000 is provided with multiple positioning pin holes 5200. The positioning pin holes 5200, the first positioning hole 3210 and the second positioning hole 5320 are interconnected. Before installing the straight pipe 4100, a guide sealing sleeve 5000 needs to be pre-installed. The guide sealing sleeve 5000 provides stress to help lock the right-angle elbow 1000 and the straight pipe 4100. Multiple guide blocks 3200 are set on the outer wall of the first guide tube 3000, and a guide seat 5300 is set on the inner wall of the guide sealing sleeve 5000. When installing the guide sealing sleeve 5000, it is necessary to ensure that the guide block 3200 on the outer wall of the first guide tube 3000 slides accurately into the positioning groove 5310 on the guide seat 5300 on the inner wall of the guide sealing sleeve 5000 until one end of the guide block 3200 contacts one end of the positioning groove 5310, so that the second positioning hole 5320 coincides with the first positioning hole 3210, and the first positioning hole 3210 coincides with the positioning pin hole 5200.

[0018] Furthermore, such as Figure 2 and Figure 8 As shown, the hollow elbow also includes a positioning component 7000, which includes a positioning pin. One end of the positioning pin is fixed to the first guide tube 3000 by sequentially inserting it into the positioning pin hole 5200, the first positioning hole 3210, and the second positioning hole 5320, thereby assisting in fixing the position of the guide sealing sleeve 5000. At this time, the positioning pin is removed, thereby positioning and locking the guide sealing sleeve 5000, eliminating the need for manual adjustment of the locking hole 2200 and reducing the overall installation time.

[0019] Furthermore, such as Figure 3 , Figure 5 , Figure 8 and Figure 10 As shown, a first sealing ring groove 8100 is provided at one end of the second guide tube 4200 near the straight pipe fitting 4000, and a second sealing ring groove 8200 is provided on the positioning flange 2000 of the straight pipe fitting 4000, with the first sealing ring groove 8100 corresponding to the second sealing ring groove 8200. A rubber sealing ring is placed into the first sealing ring groove 8100 and the second sealing ring groove 8200, thereby sealing the second guide tube 4200 and preventing gas or liquid from leaking from the second guide tube 4200 into the first guide tube 3000.

[0020] In the description of this utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" and their orientation or positional relationships are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A perforated elbow, characterized by, include: A right-angle elbow, wherein the right-angle elbow is L-shaped; Positioning flanges, a plurality of positioning flanges are respectively disposed at both ends of the right-angle elbow, a plurality of hollow grooves are formed on the circumference of the positioning flanges, a plurality of locking holes are formed on the circumference of the positioning flanges, and a locking hole is provided between two adjacent hollow grooves; A first guide tube is disposed on the positioning flange of the right-angle bend, and multiple guide grooves are formed on the circumference of the first guide tube, the guide grooves being L-shaped; A straight pipe fitting, comprising a straight pipe, a second guide pipe, and auxiliary positioning posts, wherein one end of the straight pipe is provided with the positioning flange of the same structure as described above, the second guide pipe is provided on the positioning flange at one end of the straight pipe, the second guide pipe is sleeved on the inner wall of the first guide pipe, and a plurality of auxiliary positioning posts are provided on the outer circumference of the second guide pipe, the auxiliary positioning posts cooperating with the guide groove; A guide sealing sleeve is provided with multiple locking cylinders on its outer circumference. Each locking cylinder has a hollow locking hole. The guide sealing sleeve is located on the outer wall of the first guide tube. Both ends of the guide sealing sleeve are in contact with the right-angle elbow positioning flange and the straight pipe positioning flange, respectively. A locking component is inserted sequentially into the locking holes of the right-angle elbow positioning flange, the locking hole of the locking cylinder, and the locking hole of the straight pipe positioning flange to lock the right-angle elbow positioning flange, the guide sealing sleeve, and the straight pipe positioning flange.

2. The hollow bend according to claim 1, characterized in that Multiple guide blocks are arranged circumferentially on the outer wall of the first guide tube, and a first positioning hole is provided at one end of each guide block.

3. The hollow bend according to claim 2, characterized in that The inner wall of the guide sealing sleeve is provided with multiple guide seats, and a positioning groove is formed on the guide seat. The guide block cooperates with the positioning groove. A second positioning hole is provided at one end of the positioning groove. The outer wall of the guide sealing sleeve is provided with multiple positioning pin holes. The positioning pin holes, the first positioning hole and the second positioning hole are interconnected.

4. The hollow bend according to claim 3, characterized in that It also includes a positioning component, which includes a positioning pin. One end of the positioning pin is fixed to the first guide tube by being inserted into the positioning pin hole, the first positioning hole and the second positioning hole in sequence, which will help fix the position of the guide sealing sleeve.

5. The hollow bend of claim 1, wherein The second guide tube has a first sealing ring groove at one end near the straight pipe fitting, and a second sealing ring groove is formed on the positioning flange of the straight pipe fitting, with the first sealing ring groove corresponding to the second sealing ring groove.

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