Elbow pipe with anti-deformation structure
By embedding stiffening plates on the inner wall of the outer arc of the elbow pipe and fixing it with expansion bolts using connecting plates and fixing rings, the problem of easy deformation of the elbow pipe due to fluid impact is solved, and the structural strength and sealing performance are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN CENTURY JINNIU PIPE FITTING TECH CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-26
AI Technical Summary
Existing elbows are prone to deformation in pipeline systems due to long-term fluid impact, which leads to a decrease in connection sealing and affects the normal use of the pipeline system.
Rib plates are inlaid on the inner wall of the outer arc of the elbow pipe and fixed to the expansion bolts by connecting plates and fixing rings to enhance the structural strength and prevent deformation.
Improve the resistance of elbow pipes to fluid impact, extend service life, maintain sealing, and prevent deformation from affecting the connection effect.
Smart Images

Figure CN224414643U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipe fittings technology, specifically to an elbow pipe with an anti-deformation structure. Background Technology
[0002] Elbows are a common type of pipe fitting. Based on their angle, common types include 90-degree elbows, 45-degree elbows, 180-degree elbows, and 60-degree elbows. They are used to connect two pipes that are at an angle to each other. Based on their connection method, common types of elbows include heat fusion connection, socket connection, threaded connection, and flange connection. Among them, socket connection requires the use of adhesive.
[0003] Of the four connection methods mentioned above, threaded connections and flange connections achieve physical installation and fixation, while heat fusion connections and socket connections differ from threaded connections and flange connections in that they are achieved through adhesive bonding.
[0004] Due to their structural shape, elbows are all installed at bends in piping systems. During use, these elbows are directly impacted by the fluid flowing through the pipes. However, current technology only uses pipe clamps to secure the main pipes, leaving elbows, which experience significant impact, unsecured. This prolonged fluid impact causes outward pressure at the bends, leading to a tendency for the bends to shift outwards. Since both ends are connected to the main pipe, this slight deformation, resulting in a reduced angle, ultimately compromises the seal and causes leaks, disrupting the normal operation of the piping system. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides an elbow pipe with an anti-deformation structure, which solves the problem that elbow pipes in existing pipeline systems are prone to deformation due to long-term fluid impact pressure, affecting the connection sealing performance.
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0007] A bend pipe with an anti-deformation structure includes a bend pipe body and connecting parts disposed at both ends of the bend pipe body for connecting to a pipe. The inner wall of the outer arc of the bend pipe body is inlaid with a stiffening plate, and a connecting piece is vertically fixed to the outer side of the stiffening plate. One end of the connecting piece extends through the bend pipe body to the outside and is fixed with two fixing rings. An elastic gasket is sandwiched between the two fixing rings.
[0008] Preferably, the inner wall of the stiffener plate has a curved surface that matches the curvature of the inner wall of the corresponding position of the bent pipe body.
[0009] Preferably, the outer side wall of the stiffener is uniformly provided with grid grooves.
[0010] Preferably, the thickness of the stiffening plate does not exceed one-third of the wall thickness of the bent pipe body.
[0011] Preferably, the four sides of the stiffening plate are all slopes that form an acute angle with the inner wall of the corresponding position of the bent pipe body.
[0012] Preferably, the stiffening plate is embedded in the middle of the inner wall of the outer arc of the bent pipe body, the connecting piece is disposed in the middle of the stiffening plate, the connecting piece and the elastic gasket are disposed in the vertical symmetrical plane of the bent pipe body, and the fixing ring is symmetrically disposed in front and behind the elastic gasket.
[0013] Preferably, a diagonal brace located within the vertical symmetry plane of the bent pipe body is provided between the connecting piece and the stiffening plate.
[0014] Preferably, the thickness of the retaining ring does not exceed one-half of the connecting piece.
[0015] Preferably, the connecting piece has a through hole on the surface of one end inside the bent tube body.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] This invention improves the resistance of the bend to fluid impact by incorporating high-strength aluminum alloy reinforcing plates, making the bend less prone to damage and extending its service life. These plates also support the bend, enhancing its overall structural strength and preventing deformation. Furthermore, expansion bolts are installed on the wall where the pipeline system is installed, corresponding to the fixing ring. These bolts, through connecting plates, provide support to the bend, counteracting the long-term fluid impact pressure and preventing deformation of the bend, thus avoiding compromised sealing. This solves the problem in existing pipeline systems where bends subjected to long-term fluid impact pressure are prone to deformation, affecting connection sealing. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the installation structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 3 This utility model Figure 2 Cross-sectional view at point AA;
[0021] Figure 4 This is a cross-sectional view of the present invention;
[0022] Figure 5 This is a cross-sectional view of the connecting piece and the elastic gasket of this utility model;
[0023] Figure 6 This is a right view of the stiffening plate of this utility model;
[0024] Figure 7 This is a left view of the stiffening plate of this utility model.
[0025] In the diagram: 1. Main body of the bend; 2. Pipe; 3. Connecting part; 4. Rib plate; 5. Connecting piece; 6. Fixing ring; 7. Elastic gasket; 8. Grid groove; 9. Diagonal brace; 10. Through hole. Detailed Implementation
[0026] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] like Figure 1-7 As shown, this utility model provides a technical solution: a bend pipe with an anti-deformation structure, including a bend pipe body 1 and connecting parts 3 provided at both ends of the bend pipe body 1 for connecting with pipes 2. The inner wall of the outer arc of the bend pipe body 1 is inlaid with a stiffening plate 4. The inner wall of the stiffening plate 4 and the inner wall of the corresponding position of the bend pipe body 1 are curved surfaces that match the arc, so as to avoid increasing frictional resistance when the fluid passes through.
[0028] The outer wall of the stiffening plate 4 is uniformly provided with grid grooves 8 to increase the adhesion with the bending pipe body 1. The thickness of the stiffening plate 4 does not exceed one-third of the wall thickness of the bending pipe body 1 to ensure that the plastic part of the bending pipe body 1 has sufficient thickness to guarantee sufficient structural strength.
[0029] The four sides of the stiffening plate 4 are all sloped at an acute angle to the inner wall of the corresponding position of the bending pipe body 1, so that the stiffening plate 4 is stuck in the bending pipe body 1 and avoids falling off over time.
[0030] A connecting piece 5 is vertically fixed to the outer side of the stiffening plate 4. The stiffening plate 4 is embedded in the middle of the inner wall of the outer arc of the bent pipe body 1. The connecting piece 5 is located in the middle of the stiffening plate 4. The connecting piece 5 and the elastic gasket 7 are located in the vertical symmetry plane of the bent pipe body 1. The fixing ring 6 is symmetrically arranged in front and behind the elastic gasket 7. A diagonal brace 9 located in the vertical symmetry plane of the bent pipe body 1 is provided between the connecting piece 5 and the stiffening plate 4. The stiffening plate 4, the connecting piece 5, the fixing ring 6 and the diagonal brace 9 are all made of aluminum alloy and are an integral structure. The diagonal brace 9 can increase the strength of the connection structure.
[0031] One end of the connecting piece 5 extends through the bent pipe body 1 to the outside and is fixed with two fixing rings 6. An elastic gasket 7 is sandwiched between the two fixing rings 6. The thickness of the fixing rings 6 does not exceed half of the connecting piece 5. A through hole 10 is provided on the surface of the connecting piece 5 located inside the bent pipe body 1. When the bent pipe body 1 and the connecting part 3 are thermoformed, the through hole 10 will also be filled with the raw material of the bent pipe body 1, increasing the overall connection between the connecting piece 5 and the bent pipe body 1.
[0032] Working principle:
[0033] The bend body 1 is connected to the pipe 2 via the connecting part 3 using adhesive or hot-melt technology. The pipe 2 is fixed to the wall where the pipeline system is installed by pipe clamps. Expansion bolts are installed on the wall at the corresponding positions of the fixing ring 6. The fixing ring 6 is fixed and clamped from the outside by nuts. The expansion bolts and connecting pieces 5 provide support for the bend body 1, preventing the bend body 1 from moving outward and deforming due to long-term fluid impact, which would affect the sealing performance. The bend body 1 is equipped with high-strength aluminum alloy stiffeners 4 inside to improve its resistance to fluid impact, making the bend body 1 less prone to damage and extending its service life. At the same time, it also supports the bend body 1 and improves the overall structural strength of the bend body 1.
Claims
1. A bend pipe with an anti-deformation structure, comprising a bend body (1) and connecting portions (3) disposed at both ends of the bend body (1) for connecting to a pipe (2), characterized in that: The inner wall of the outer arc of the bent pipe body (1) is inlaid with a rib plate (4), and a connecting piece (5) is vertically fixed on the outer side of the rib plate (4). One end of the connecting piece (5) extends through the bent pipe body (1) to the outside and is fixed with two fixing rings (6). An elastic gasket (7) is sandwiched between the two fixing rings (6).
2. The elbow pipe with anti-deformation structure according to claim 1, characterized in that: The inner wall of the stiffener (4) is a curved surface that matches the curvature of the inner wall of the bent pipe body (1) at the corresponding position.
3. The elbow pipe with anti-deformation structure according to claim 1, characterized in that: The outer side wall of the stiffener (4) is uniformly provided with grid grooves (8).
4. The elbow pipe with anti-deformation structure according to claim 1, characterized in that: The thickness of the stiffening plate (4) does not exceed one-third of the wall thickness of the bent pipe body (1).
5. The elbow pipe with anti-deformation structure according to claim 1, characterized in that: The four sides of the stiffening plate (4) are all slopes that form an acute angle with the inner wall of the corresponding position of the bent pipe body (1).
6. The elbow pipe with anti-deformation structure according to claim 1, characterized in that: The stiffening plate (4) is embedded in the middle of the inner wall of the outer arc of the bent pipe body (1), the connecting piece (5) is set in the middle of the stiffening plate (4), the connecting piece (5) and the elastic gasket (7) are set in the vertical symmetrical plane of the bent pipe body (1), and the fixing ring (6) is symmetrically set in front and behind the elastic gasket (7) outside.
7. The elbow pipe with anti-deformation structure according to claim 6, characterized in that: A diagonal brace (9) located in the vertical symmetry plane of the bent pipe body (1) is provided between the connecting piece (5) and the stiffening plate (4).
8. The elbow pipe with anti-deformation structure according to claim 1, characterized in that: The thickness of the fixing ring (6) does not exceed one-half of the thickness of the connecting piece (5).
9. The elbow pipe with anti-deformation structure according to claim 1, characterized in that: The connecting piece (5) has a through hole (10) on the surface of one end inside the bent tube body (1).