A pressure-resistant and damage-resistant single U-shaped elbow

By installing a double-layer protective shell and support structure on the outside of the single U-shaped elbow, the stability problem of the single U-shaped elbow under impact and idle conditions is solved, achieving the effects of pressure resistance, damage prevention, and stable connection.

CN224454084UActive Publication Date: 2026-07-03TIANJIN TANGGU DISTRICT JIANTONG ANTISEPSIS HEAT PRESERVATION CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN TANGGU DISTRICT JIANTONG ANTISEPSIS HEAT PRESERVATION CO LTD
Filing Date
2025-08-14
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing single U-shaped elbows are prone to breakage when subjected to impact, and the end angle is easily altered when idle, leading to unstable connections.

Method used

It adopts a double-layer protective shell structure, with a buffer cavity and supporting ribs between the outer and inner lining layers. The support is fixed to the fixed base through the connecting plate, which enhances the pressure resistance and maintains the stability of the end angle.

Benefits of technology

It effectively prevents damage to the sidewalls of elbows, maintains a stable connection between the ends and the pipes, and improves pressure resistance and connection reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a pressure-resistant and damage-proof single U-shaped elbow, belonging to the field of hardware technology. The pressure-resistant and damage-proof single U-shaped elbow includes a single U-shaped elbow body and a first interface and a second interface disposed at both ends of the single U-shaped elbow body. A protective shell is installed on the outer side of the single U-shaped elbow body, and two protective shells are symmetrically arranged. The protective shell consists of an outer liner and an inner liner, with a buffer cavity provided between the outer liner and the inner liner. Multiple support ribs are fixedly connected to the inner side of the buffer cavity. This effectively prevents damage to the sidewall of the single U-shaped elbow body due to excessive pressure during impact, and also prevents changes in the angle between the ends of the single U-shaped elbow body under external force, ensuring that the ends of the single U-shaped elbow body can be properly connected to the pipeline during use.
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Description

Technical Field

[0001] This utility model relates to the field of hardware technology, and more specifically, to a pressure-resistant and damage-resistant single U-shaped elbow. Background Technology

[0002] A single U-bend (also known as a 180° elbow) is a pipe fitting used in piping systems to change the direction of pipelines. Its angle is 180 degrees, and it is commonly used to ensure a directional change in fluid flow. Structural features: The single U-bend, through its 180-degree bend design, allows fluid to achieve a directional change in the pipeline, and is commonly found in scenarios requiring a change in pipeline layout. Depending on the material, it can be divided into carbon steel, alloy steel, and other types, and is suitable for transporting gases, liquids, and steam.

[0003] However, existing single U-shaped elbows are single-layer structures with unsatisfactory pressure resistance. When subjected to impact, the elbow wall is prone to cracking. Furthermore, when the single U-shaped elbow is not in use, an impact can cause the angle of the single U-shaped elbow to change, making it impossible to connect properly to the pipeline. Therefore, we have proposed a pressure-resistant and damage-resistant single U-shaped elbow to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a pressure-resistant and damage-resistant single U-shaped elbow. It can effectively prevent the side wall of the single U-shaped elbow body from being damaged due to excessive pressure when subjected to impact, and at the same time prevent the angle between the ends of the single U-shaped elbow body from changing due to external force, so as to ensure that the ends of the single U-shaped elbow body can be properly connected to the pipeline when in use.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A pressure-resistant and damage-resistant single U-shaped elbow includes a single U-shaped elbow body and a first interface and a second interface disposed at both ends of the single U-shaped elbow body. A protective shell is installed on the outer side of the single U-shaped elbow body, and two protective shells are symmetrically arranged.

[0009] The protective shell consists of an outer liner and an inner liner. A buffer cavity is provided between the outer liner and the inner liner. A support rib is fixedly connected to the inner side of the buffer cavity, and multiple support ribs are provided.

[0010] The outer wall of the protective shell is welded with a fixed seat with a semi-circular structure. A support member is detachably connected to the fixed seat. The support member consists of a connecting part and a connecting plate with a ring structure.

[0011] Furthermore, the outer wall of the protective shell is symmetrically welded with connecting ears, and the connecting ears are provided with assembly holes.

[0012] Furthermore, the mounting base has a first mounting hole.

[0013] Furthermore, the connecting portion is located in the middle of the support member.

[0014] Furthermore, two connecting plates are symmetrically arranged, and the two connecting plates are respectively welded to the end portion of the connecting part.

[0015] Furthermore, the connecting plate is provided with a second mounting hole corresponding to the first mounting hole.

[0016] Furthermore, the outer liner and the inner liner are made of carbon steel, and the thickness of both the outer liner and the inner liner is set at 2mm.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) In this solution, two protective shells are symmetrically installed and fixed on the outside of the single U-shaped elbow body. When impacted, the outer lining layer that makes up the protective shell first absorbs the impact force. At the same time, the buffer cavity set between the outer lining layer and the inner lining layer buffers the impact force during the impact process. The supporting ribs set inside the buffer cavity further absorb the kinetic energy during the impact process, thereby reducing the deformation degree of the inner lining layer and improving the overall compressive strength of the single U-shaped elbow body. This avoids damage to the side wall of the single U-shaped elbow body due to excessive pressure when impacted.

[0020] (2) In this solution, when the single U-shaped elbow body is not in use, the connecting plate that makes up the support is sleeved on the end of the protective shell and the connecting plate abuts against the fixed seat. The connecting plates are supported and fixed by the connecting part, which can effectively fix the two ends of the single U-shaped elbow body and prevent the angle between the ends of the single U-shaped elbow body from changing due to external force, so as to ensure that the ends of the single U-shaped elbow body can be normally connected to the pipeline when it is in use. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a structural breakdown diagram of the present invention;

[0023] Figure 3 This is a front view schematic diagram of the protective shell of this utility model;

[0024] Figure 4 This is a cross-sectional view of the protective shell AA portion of this utility model.

[0025] Explanation of the labels in the diagram:

[0026] 1. Single U-shaped elbow body; 2. Protective shell; 3. Connecting ear; 4. Fixing base; 5. Outer liner; 6. Inner liner; 7. Buffer cavity; 8. Support rib; 9. Support component; 10. Connecting part; 11. Connecting plate; 12. First interface; 13. Second interface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] Example:

[0029] Please see Figure 1-4 A pressure-resistant and damage-resistant single U-shaped elbow includes a single U-shaped elbow body 1 and a first interface 12 and a second interface 13 disposed at both ends of the single U-shaped elbow body 1. A protective shell 2 is installed on the outside of the single U-shaped elbow body 1, and two protective shells 2 are symmetrically arranged.

[0030] The protective shell 2 is composed of an outer liner 5 and an inner liner 6. A buffer cavity 7 is provided between the outer liner 5 and the inner liner 6. A support rib 8 is fixedly connected to the inner side of the buffer cavity 7, and multiple support ribs 8 are provided.

[0031] The outer wall of the protective shell 2 is welded with a fixing seat 4 with a semi-circular structure. A support member 9 is detachably connected to the fixing seat 4. The support member 9 consists of a connecting part 10 and a connecting plate 11 with a ring structure.

[0032] It should be noted that when this pressure-resistant and anti-damage single U-shaped elbow is used, the two protective shells 2 are symmetrically installed on the outside of the single U-shaped elbow body 1 and fixed. When it is impacted, the outer lining layer 5 that makes up the protective shell 2 first absorbs the impact force. At the same time, the buffer cavity 7 set between the outer lining layer 5 and the inner lining layer 6 buffers the impact force during the impact process, and the support rib plate 8 set inside the buffer cavity 7 further absorbs the kinetic energy during the impact process, thereby reducing the deformation degree of the inner lining layer 6, thereby improving the overall pressure resistance of the single U-shaped elbow body 1 and avoiding damage to the side wall of the single U-shaped elbow body 1 due to excessive pressure when it is impacted.

[0033] When the single U-shaped elbow body 1 is not in use, the connecting plate 11, which is composed of the support member 9, is sleeved on the end of the protective shell 2 and abuts against the fixing seat 4. The connecting plates 11 are supported and fixed by the connecting part 10, which can effectively fix the two ends of the single U-shaped elbow body 1 and prevent the angle between the ends of the single U-shaped elbow body 1 from changing due to external force, so as to ensure that the ends of the single U-shaped elbow body 1 can be normally connected to the pipeline when in use.

[0034] like Figure 1 , Figure 2 As shown, the outer wall of the protective shell 2 is symmetrically welded with connecting ears 3, and the connecting ears 3 are provided with assembly holes;

[0035] It should be noted that by symmetrically installing two protective shells 2 on the outside of the single U-shaped elbow body 1, and with the connecting ears 3 on the two symmetrically arranged protective shells 2 corresponding to each other, the protective shells 2 are conveniently fixed by passing bolts through the assembly holes and locking them with nuts.

[0036] like Figure 1 , Figure 2 As shown, the fixed base 4 has a first mounting hole, the connecting part 10 is located in the middle of the support member 9, two connecting plates 11 are symmetrically arranged, and the two connecting plates 11 are respectively welded to the end of the connecting part 10. The connecting plate 11 has a second mounting hole corresponding to the first mounting hole.

[0037] It should be noted that by fitting the connecting plate 11, which constitutes the support member 9, onto the end of the protective shell 2 and making the connecting plate 11 abut against the fixing seat 4, the first mounting hole and the second mounting hole correspond to each other. Bolts are passed through the first mounting hole and the second mounting hole, and then locked with nuts, which facilitates the installation and fixing of the support member 9.

[0038] The outer liner 5 and the inner liner 6 are made of carbon steel, and the thickness of both the outer liner 5 and the inner liner 6 is set at 2mm.

[0039] In use: By symmetrically installing and fixing the two protective shells 2 on the outside of the single U-shaped elbow body 1, when impacted, the outer lining layer 5 that makes up the protective shell 2 first absorbs the impact force. At the same time, the buffer cavity 7 set between the outer lining layer 5 and the inner lining layer 6 buffers the impact force during the impact process, and the support rib plate 8 set inside the buffer cavity 7 further absorbs the kinetic energy during the impact process, thereby reducing the deformation degree of the inner lining layer 6, thereby improving the overall pressure resistance of the single U-shaped elbow body 1 and avoiding damage to the side wall of the single U-shaped elbow body 1 due to excessive pressure when impacted.

[0040] When the single U-shaped elbow body 1 is not in use, the connecting plate 11, which is composed of the support member 9, is sleeved on the end of the protective shell 2 and abuts against the fixing seat 4. The connecting plates 11 are supported and fixed by the connecting part 10, which can effectively fix the two ends of the single U-shaped elbow body 1 and prevent the angle between the ends of the single U-shaped elbow body 1 from changing due to external force, so as to ensure that the ends of the single U-shaped elbow body 1 can be normally connected to the pipeline when in use.

[0041] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A pressure-resistant and damage-resistant single-U elbow, comprising a single-U elbow body (1) and a first interface (12) and a second interface (13) arranged at both ends of the single-U elbow body (1), characterized in that: The outer side of the single U-shaped elbow body (1) is equipped with a protective shell (2), and there are two protective shells (2) symmetrically arranged; The protective shell (2) is composed of an outer liner (5) and an inner liner (6). A buffer cavity (7) is provided between the outer liner (5) and the inner liner (6). A support rib (8) is fixedly connected to the inner side of the buffer cavity (7), and multiple support ribs (8) are provided. The protective shell (2) has a fixed seat (4) with a semi-circular structure welded to its outer wall. A support member (9) is detachably connected to the fixed seat (4). The support member (9) consists of a connecting part (10) and a connecting plate (11) with a ring structure.

2. The pressure-resistant and damage-resistant single U-shaped elbow according to claim 1, characterized in that: The outer wall of the protective shell (2) is symmetrically welded with connecting ears (3), and the connecting ears (3) are provided with assembly holes.

3. The pressure-resistant and damage-resistant single U-shaped elbow according to claim 1, characterized in that: The fixing base (4) has a first mounting hole.

4. The pressure-resistant and damage-resistant single U-shaped elbow according to claim 1, characterized in that: The connecting part (10) is located in the middle of the support member (9).

5. A pressure-resistant and damage-resistant single U-shaped elbow according to claim 1, characterized in that: Two connecting plates (11) are symmetrically arranged, and the two connecting plates (11) are respectively welded to the end of the connecting part (10).

6. A pressure-resistant and damage-resistant single U-shaped elbow according to claim 3, characterized in that: The connecting plate (11) has a second mounting hole corresponding to the first mounting hole.

7. A pressure-resistant and damage-resistant single U-shaped elbow according to claim 1, characterized in that: The outer liner (5) and the inner liner (6) are made of carbon steel, and the thickness of both the outer liner (5) and the inner liner (6) is set at 2 mm.