Taper sleeve flaring flange

Abstract

The utility model provides a taper sleeve flaring flange, and belongs to the technical field of flaring flanges. The flaring flange solves the problem that in the prior art, when a flaring flange is installed, friction and collision are prone to being caused, and scratches or deformation is caused. The flange comprises a flange body, a taper sleeve and a protective isolating membrane, the whole flange body is annular, a through shrinkage enclasping pipeline is formed in the flange body, the shrinkage enclasping pipeline comprises a small-caliber flaring and a large-caliber flaring, and an inclined plane structure is formed between the small-caliber flaring and the large-caliber flaring. The whole taper sleeve is a hollow sleeve component, a conical surface structure is formed in the middle of the taper sleeve, the taper of the conical surface structure is the same as that of the inclined surface structure, a first installation ring and a second installation ring are formed in the taper sleeve, and the first installation ring is installed in the large-diameter flaring. And the protective isolating membrane is attached to the inner wall of the contraction and clasping pipeline, and the protective isolating membrane is mounted between the flange body and the taper sleeve. The utility model has the advantages that the sealing surface is protected from being bumped and scratched, and the sealing performance is strong.

Description

Technical Field

[0001] This utility model belongs to the field of flared flange technology and relates to a tapered sleeve flared flange. Background Technology

[0002] A tapered sleeve flared flange is a pipe fitting that combines a tapered sleeve and a flared structure. It is mainly used in industrial applications requiring high pressure, high temperature, or high sealing performance.

[0003] Chinese patent publication number CN202914935U discloses a flared flange structure, including a first steel pipe, a second steel pipe, and a connecting flange fitted around the first and second steel pipes. The connecting flange is fixed by bolts and nuts. Both the first and second steel pipes have outward flares at their ends. The flares of the first and second steel pipes are provided with sealing cones. The sealing cones include a first cone and a second cone. The first and second cones include a conical surface section and an extended cylindrical section. The conical surface section is tightly attached to the inner conical surface of the flare by a sealing ring, and the extended cylindrical section is tightly attached to the inner wall of the first or second steel pipe.

[0004] In the flared flange structure provided by this patent, a steel pipe is directly installed between the sealing cone and the connecting flange. During installation and use, since the sealing cone, connecting flange and steel pipe are all metal parts and are in direct contact, they are prone to friction and collision, resulting in scratches or deformation, which has an adverse effect on the sealing performance. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a tapered flared flange.

[0006] The objective of this utility model can be achieved through the following technical solution: A tapered flared flange, comprising a flange body, a tapered sleeve, and a protective isolation membrane. The flange body is generally annular and has a through-flow shrink-fitting pipe inside. The shrink-fitting pipe includes a small-diameter flare and a large-diameter flare, with an inclined structure formed between the small-diameter flare and the large-diameter flare. The tapered sleeve is generally a hollow sleeve component, with a tapered surface structure formed in the middle of the tapered sleeve. The tapered surface structure and the inclined surface structure have the same taper. A first mounting ring and a second mounting ring are formed in the tapered sleeve. The first mounting ring is installed inside the large-diameter flare. The protective isolation membrane is fitted to the inner wall of the shrink-fitting pipe and is installed between the flange body and the tapered sleeve.

[0007] In the aforementioned tapered flared flange, a first sealing groove is provided in the tapered surface structure, and a first rubber sealing ring is fixedly installed in the first sealing groove.

[0008] In the aforementioned tapered sleeve flared flange, a second sealing groove is provided in the outer end face of the tapered sleeve, and a second rubber sealing ring is fixedly installed in the second sealing groove.

[0009] In the aforementioned tapered flared flange, the flange body has several mounting holes.

[0010] Compared with the prior art, the tapered sleeve flared flange provided by this utility model has the following beneficial effects: 1. The tapered surface structure of the tapered sleeve is perfectly matched with the tapered surface structure of the flange body. Metal-to-metal surface sealing is achieved through bolt pre-tightening force. Combined with the double elastic sealing of the first and second rubber sealing rings, multiple sealing barriers are formed, which can withstand high-pressure media without leakage, significantly improving sealing reliability; 2. The protective isolation membrane between the flange body and the tapered sleeve not only protects the sealing surface from bumps and scratches, but also provides lubrication guidance, simplifies the assembly process of the tapered sleeve and the flange body, ensures concentricity, and is suitable for standardized mass production. Attached Figure Description

[0011] Figure 1 This is a schematic cross-sectional view of the present invention;

[0012] Figure 2 This is a schematic diagram of the exploded cross-section structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the side structure of the flange body.

[0014] In the diagram: 1. Flange body; 11. Shrink-fitting pipe; 12. Small-diameter flare; 13. Large-diameter flare; 14. Beveled structure; 15. Mounting hole; 2. Tapered sleeve; 21. Tapered surface structure; 22. First mounting ring; 23. Second mounting ring; 24. First sealing groove; 25. Second sealing groove; 3. Protective isolation membrane; 4. First rubber sealing ring; 5. Second rubber sealing ring. Detailed Implementation

[0015] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0016] like Figures 1 to 3As shown, this embodiment includes a flange body 1, a conical sleeve 2, and a protective isolation membrane 3. The flange body 1 is generally annular and has a shrink-fitting pipe 11 that runs through both sides of the flange body 1. The shrink-fitting pipe 11 includes a small-diameter flare 12 and a large-diameter flare 13. An inclined structure 14 is formed between the small-diameter flare 12 and the large-diameter flare 13. The conical sleeve 2 is generally a hollow sleeve component and has a conical surface structure 21 in the middle. The taper of the inclined structure 14 matches the conical surface structure 21 of the conical sleeve 2. The two ends of the conical sleeve 2 are respectively formed as a first mounting ring 22 and a second mounting ring 23. When the entire assembly is installed in this embodiment, the first mounting ring 22 is installed inside the large-diameter flare 13, and the second mounting ring 23 plays an auxiliary positioning role, forming a rigid connection and transmitting axial force and torque.

[0017] Specifically, the thickness of the protective isolation membrane 3 is 0.02~0.05mm. The protective isolation membrane 3 is installed in close contact with the inner wall of the shrink-fitting pipe 11 and is installed between the flange body 1 and the cone sleeve 2. The protective isolation membrane 3 serves to isolate the metal sealing surface, avoid assembly bumps and scratches, maintain the accuracy of the cone surface, and also provides lubrication guidance, simplifies the insertion of the cone sleeve 2, and reduces human error.

[0018] like Figures 1 to 2 As shown, a second sealing groove 25 is provided in the outer end face of the tapered sleeve 2, and a second rubber sealing ring 5 is fixedly installed in the second sealing groove 25. The second rubber sealing ring 5 cooperates with the end face of the flange body 1 to achieve the first elastic seal. A first sealing groove 24 is provided in the tapered surface structure 21 of the tapered sleeve 2, and a first rubber sealing ring 4 is fixedly installed in the first sealing groove 24. The first rubber sealing ring 4 cooperates with the inner wall of the shrink-fitting pipe 11 to form the second elastic seal.

[0019] To elaborate further, such as Figure 3 As shown, the flange body 1 has four mounting holes 15 circumferentially, which are used to connect this embodiment with external accessories.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A tapered flared flange, comprising a flange body (1), a tapered sleeve (2), and a protective isolation membrane (3), characterized in that: The flange body (1) is generally annular and has a through shrink-fitting pipe (11) inside. The shrink-fitting pipe (11) includes a small-diameter flare (12) and a large-diameter flare (13). An inclined structure (14) is formed between the small-diameter flare (12) and the large-diameter flare (13). The cone sleeve (2) is generally a hollow sleeve component and has a cone surface structure (21) in the middle. The cone surface structure (21) has the same taper as the inclined structure (14). A first mounting ring (22) and a second mounting ring (23) are formed in the cone sleeve (2). The first mounting ring (22) is installed inside the large-diameter flare (13). The protective isolation membrane (3) is fitted to the inner wall of the shrink-fitting pipe (11) and is installed between the flange body (1) and the cone sleeve (2).

2. A cone-and-bell flange as defined in claim 1, wherein: The conical structure (21) has a first sealing groove (24), and a first rubber sealing ring (4) is fixedly installed in the first sealing groove (24).

3. A cone-and-bell flange as defined in claim 1 wherein: A second sealing groove (25) is provided in the outer end face of the tapered sleeve (2), and a second rubber sealing ring (5) is fixedly installed in the second sealing groove (25).

4. A cone-and-bell flange as defined in claim 1 wherein: The flange body (1) has several mounting holes (15).

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