Stainless steel pipe fitting connecting structure
By using U-groove sealing rings and spun connections in the stainless steel pipe fitting connection structure, the problems of difficult operation and insufficient sealing performance are solved, achieving a highly efficient and reliable sealing effect.
Patent Information
- Application Number
- CN202422971905.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-03
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-03
AI Technical Summary
Existing stainless steel pipe fittings are difficult to connect and have insufficient sealing performance, especially prone to leakage under high water pressure, and O-ring seals are prone to failure.
The design employs a first and second sealing ring each with a U-shaped groove, combined with the structure of a spacer ring, a spun ring, and a nut. The spun connection improves sealing performance and simplifies installation.
It improves the sealing performance of stainless steel pipe fittings, reduces the risk of leakage, simplifies the installation process, and increases installation efficiency.
Smart Images

Figure CN223511688U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of pipe fittings technology, and more specifically, relates to a stainless steel pipe fitting connection structure. Background Technology
[0002] Current stainless steel pipe crimp connections are difficult and inefficient due to the need for specialized tools and the skill required of the operator. They utilize O-ring seals, which rely on the contraction and deformation of the pipe fittings to compress the O-rings inside, ensuring a secure and leak-proof installation. However, the water inside the stainless steel pipes has pressure. Since the connection between the straight pipe end and the fitting socket is rigid, there is no seal. Under water pressure, water can enter through the gap between the straight pipe end and the fitting socket, putting pressure on the O-ring. Existing O-rings rely solely on deformation of the contact area to withstand the water pressure; only sufficient deformation can prevent leakage. Excessive pressure on the O-ring can cause premature failure, leading to leaks. Utility Model Content
[0003] To overcome the aforementioned shortcomings of the prior art, the purpose of this application is to provide a stainless steel pipe fitting connection structure that simplifies the installation process, allowing for quick installation using only an ordinary open-end wrench. It also reduces the risk of leakage associated with single-sided O-ring seals.
[0004] The technical means adopted in this application to solve the above-mentioned technical problems are:
[0005] This application provides a stainless steel pipe fitting connection structure, including:
[0006] A first sealing ring, the first sealing ring having a first U-shaped groove;
[0007] The second sealing ring has a second U-shaped groove, and the first sealing ring abuts against the second sealing ring;
[0008] The first tube body, the tube wall of the first tube body being inserted into the first U-shaped groove;
[0009] The second tube body, the wall of the second tube body being inserted into the second U-shaped groove;
[0010] The first spacer ring is fitted onto the first sealing ring;
[0011] The second spacer ring is fitted onto the second sealing ring;
[0012] A spinning collar is fitted onto the first tube body, the outer peripheral wall of the spinning collar is threaded, and the spinning collar abuts against the first spacer ring.
[0013] A spun nut is fitted onto the second tube body, the spun nut is threadedly connected to the spun collar, and the spun nut abuts against the second spacer ring.
[0014] Preferably, the first meson ring has a first abutting plate, which is inclined.
[0015] Preferably, multiple first abutment plates are provided, and the multiple first abutment plates are arranged at intervals along the circumference of the first spacer ring.
[0016] Preferably, the second meson ring has a second abutment plate, which is inclined.
[0017] Preferably, multiple second abutment plates are provided, and the multiple second abutment plates are arranged at intervals along the circumference of the second spacer ring.
[0018] Preferably, the spun ring is configured with a hexagonal structure.
[0019] Preferably, the spun nut is configured with a hexagonal structure.
[0020] Compared with the prior art, the stainless steel pipe fitting connection structure of this application is provided with a first sealing ring and a second sealing ring. The first sealing ring is provided with a first U-shaped groove, and the second sealing ring is provided with a second U-shaped groove. By inserting the pipe wall of the first pipe body into the first U-shaped groove and the pipe wall of the second pipe body into the second U-shaped groove, the sealing performance is greatly improved and the risk of leakage due to seal failure is reduced. In addition, a first wash ring, a second wash ring, a screw ring, and a screw nut are provided. The first and second wash rings are used to compress the first and second sealing rings, further improving the sealing performance. Furthermore, the connection through the screw ring and screw nut facilitates operation, reduces operational difficulty, and improves efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 This is a schematic diagram of the stainless steel pipe fitting connection structure of this application.
[0023] Figure 2This is a cross-sectional schematic diagram of the stainless steel pipe fitting connection structure of this application.
[0024] Marker explanation:
[0025] 1. First sealing ring; 2. Second sealing ring; 3. First tube body; 4. Second tube body; 5. First spacer ring; 6. Second spacer ring; 7. Spun threaded ring; 8. Spun nut. Detailed Implementation
[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0027] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. Similar reference numerals and letters denote similar items in the following figures; therefore, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0028] like Figures 1-2As shown, this embodiment provides a stainless steel pipe fitting connection structure, including a first sealing ring 1, a second sealing ring 2, a first pipe body 3, a second pipe body 4, a first spacer ring 5, a second spacer ring 6, a spun threaded ring 7, and a spun nut 8. The first sealing ring 1 has a first U-shaped groove; the second sealing ring 2 has a second U-shaped groove, and the first sealing ring 1 abuts against the second sealing ring 2; the pipe wall of the first pipe body 3 is inserted into the first U-shaped groove; the pipe wall of the second pipe body 4 is inserted into the second U-shaped groove; the first spacer ring 5 is sleeved on the first sealing ring 1; the second spacer ring 6 is sleeved on the second sealing ring 2; the spun threaded ring is sleeved on the first pipe body 3, the outer peripheral wall of the spun threaded ring is provided, and the spun threaded ring abuts against the first spacer ring 5; the spun nut 8 is sleeved on the second pipe body 4, the spun nut 8 is threadedly connected to the spun threaded ring, and the spun nut 8 abuts against the second spacer ring 6.
[0029] In some preferred embodiments of this invention, the first retainer ring 5 has a first abutment plate, which is inclined. This inclined arrangement allows for better compression of the sealing ring, improving sealing performance.
[0030] In some preferred embodiments of this invention, multiple first abutment plates are provided, and these plates are spaced apart along the circumference of the first sealing ring 5. This allows for multi-point pressure on the first sealing ring 1, improving sealing performance.
[0031] In some preferred embodiments of this invention, the second retainer ring 6 has a second abutment plate, which is inclined. This inclined arrangement allows for better compression of the sealing ring, improving sealing performance.
[0032] In some preferred embodiments of this invention, multiple second abutment plates are provided, and these plates are spaced apart along the circumference of the second sealing ring 6. This allows for multi-point pressure on the first sealing ring 1, improving sealing performance.
[0033] In some preferred embodiments of this invention, the spun collar is configured with a hexagonal structure. This facilitates subsequent operations.
[0034] In some preferred embodiments of this invention, the spun nut 8 is configured as a hexagonal structure. This facilitates subsequent operations.
[0035] Compared with the prior art, the stainless steel pipe fitting connection structure of this application is provided with a first sealing ring 1 and a second sealing ring 2. The first sealing ring 1 is provided with a first U-shaped groove, and the second sealing ring 2 is provided with a second U-shaped groove. By inserting the pipe wall of the first pipe body 3 into the first U-shaped groove and the pipe wall of the second pipe body 4 into the second U-shaped groove, the sealing performance is greatly improved and the risk of leakage due to seal failure is reduced. In addition, a first spacer ring 5, a second spacer ring 6, a screw ring 7, and a screw nut 8 are provided. The first sealing ring 1 and the second sealing ring 2 are pressed together by the first spacer ring 5 and the second spacer ring 6, which further improves the sealing performance. Furthermore, the connection by the screw ring 7 and the screw nut 8 facilitates operation, reduces the difficulty of operation, and improves efficiency.
[0036] The above description is merely a specific embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should also be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
[0037] 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
Claims
1. A stainless steel pipe fitting connection structure, characterized in that, include: A first sealing ring, the first sealing ring having a first U-shaped groove; The second sealing ring has a second U-shaped groove, and the first sealing ring abuts against the second sealing ring; The first tube body, the tube wall of the first tube body being inserted into the first U-shaped groove; The second tube body, the wall of the second tube body being inserted into the second U-shaped groove; The first spacer ring is fitted onto the first sealing ring; The second spacer ring is fitted onto the second sealing ring; A spinning collar is fitted onto the first tube body, the outer peripheral wall of the spinning collar is threaded, and the spinning collar abuts against the first spacer ring. A spun nut is fitted onto the second tube body, the spun nut is threadedly connected to the spun collar, and the spun nut abuts against the second spacer ring.
2. The stainless steel pipe fitting connection structure according to claim 1, characterized in that, The first meson ring has a first abutting plate, which is inclined.
3. The stainless steel pipe fitting connection structure according to claim 2, characterized in that, Multiple first abutment plates are provided, and the multiple first abutment plates are arranged at intervals along the circumference of the first spacer ring.
4. The stainless steel pipe fitting connection structure according to claim 1, characterized in that, The second meson ring has a second abutment plate, which is inclined.
5. The stainless steel pipe fitting connection structure according to claim 4, characterized in that, Multiple second abutment plates are provided, and the multiple second abutment plates are arranged at intervals along the circumference of the second interlocking ring.
6. The stainless steel pipe fitting connection structure according to claim 1, characterized in that, The spun collar is configured with a hexagonal structure.
7. The stainless steel pipe fitting connection structure according to claim 1, characterized in that, The spun nut is configured with a hexagonal structure.