Pressure pipeline flange joint
By setting up multiple layers of sealing gaskets between the pressure pipe flange joints, the problem of high leakage risk of flange connections in the prior art is solved, and better sealing effect and safety are achieved.
Patent Information
- Application Number
- CN202421498293.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the prior art, the leakage risk of flange connection is high, and the sealing gasket is only installed between the two flanges, so the sealing effect is limited.
A pressure pipe flange joint is designed, and a multi-layer seal is performed from three positions to enhance the sealing effect by providing a seal between the two flange joints, including a first sealing gasket, a second sealing gasket and a third sealing gasket.
A better anti-leakage effect is achieved, and the safety of the medium in the pipeline is ensured through multi-layer sealing, reducing the risk of leakage.
Smart Images
Figure CN222559443U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flange joints, in particular to a pressure pipeline flange joint. Background Art
[0002] Pressure pipes refer to all pipes that are subject to internal or external pressure, regardless of the medium inside the pipe. Pressure pipes are part of a pipeline that is used to transport, distribute, mix, separate, discharge, meter, control and stop the flow of fluids. Flange joints are a device used for flange sealing, which has the characteristics of small size, light weight and good elasticity.
[0003] The flange connection method has a high risk of leakage, and a sealing gasket is needed to enhance the sealing effect and prevent leakage. However, the existing sealing gasket is only arranged between the two flanges, and the sealing effect is limited. Utility Model Content
[0004] The utility model aims to provide a pressure pipe flange joint to solve the problem that the flange connection method in the prior art has a high risk of leakage, and the sealing gasket is only arranged between two flanges, resulting in limited sealing effect.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure pipe flange joint, comprising a first pipe and a second pipe, wherein the ends of the first pipe and the second pipe that are close to each other are fixedly connected to flange joints, a sealing member is arranged between the two flange joints, and the sealing member comprises a first sealing gasket arranged between the two flange joints, an integral third sealing gasket is fixed to the outer arc surface of the first sealing gasket, a side of the third sealing gasket close to the first sealing gasket is fitted with the outer arc surfaces of the two flange joints, an integral second sealing gasket is fixed to the inner arc surface of the first sealing gasket, and a side of the second sealing gasket close to the first sealing gasket is fitted with the inner arc surfaces of the two flange joints.
[0006] Preferably, a side of the second sealing gasket away from the first sealing gasket is configured as an arc-shaped surface.
[0007] Preferably, grooves are provided on the inner walls of the first pipe and the second pipe at positions corresponding to the flange joints, and a side of the second sealing gasket close to the first sealing gasket fits with the inner surface of the groove.
[0008] Preferably, a fastener is provided between the two flange joints.
[0009] Preferably, the fastener is a bolt.
[0010] Compared with the prior art, the beneficial effects of the utility model are:
[0011] The utility model is provided with a sealing member, including a first sealing gasket, a second sealing gasket, and a third sealing gasket. The first sealing gasket is located between two flange joints to seal the connecting surfaces of the two flange joints. The second sealing gasket is located inside the first pipeline and the second pipeline, and one side of the second sealing gasket is in contact with the inner arc surfaces of the two flange joints to seal the inner connection of the two flange joints. The third sealing gasket is located outside the first pipeline and the second pipeline, and one side of the third sealing gasket is in contact with the outer arc surfaces of the two flange joints to seal the outer connection of the two flange joints. Multi-layer sealing is performed simultaneously from three positions, which has a better anti-leakage effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0013] Figure 1 This is a schematic diagram of the appearance structure of the utility model;
[0014] Figure 2 It is a schematic diagram of the split structure of the utility model;
[0015] Figure 3 It is a schematic diagram of the internal structure of the utility model.
[0016] In the figure: 1. first pipeline; 2. second pipeline; 3. flange joint; 4. fastener; 5. seal; 6. first sealing gasket; 7. second sealing gasket; 8. third sealing gasket; 9. groove. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] See also Figure 1 In an embodiment of the utility model, a pressure pipe flange joint includes a first pipe 1 and a second pipe 2. The first pipe 1 and the second pipe 2 are used for conveying, distributing, mixing, separating, discharging, metering, controlling and stopping the flow of fluid. The first pipe 1 and the second pipe 2 are both fixedly connected with a flange joint 3 at one end thereof close to each other. The connection between the first pipe 1 and the second pipe 2 can be achieved by the fixed connection of the two flange joints 3.
[0019] See also Figure 1-3A sealing member 5 is provided between the two flange joints 3. The sealing member 5 is used to seal the connection between the two flange joints 3 to prevent leakage of the internal medium of the first pipeline 1 and the second pipeline 2. The sealing member 5 includes a first sealing gasket 6 provided between the two flange joints 3. The upper and lower surfaces of the first sealing gasket 6 are respectively fitted with the two flange joints 3, and the upper and lower surfaces of the first sealing gasket 6 are respectively fitted with the two flange joints 3 to seal the connection surfaces of the two flange joints 3. An integral third sealing gasket 8 is fixed to the outer arc surface of the first sealing gasket 6. The side of the third sealing gasket 8 close to the first sealing gasket 6 is fitted with the outer arc surfaces of the two flange joints 3. The first sealing gasket An integral second sealing gasket 7 is fixed to the inner arc surface of 6, and a side of the second sealing gasket 7 close to the first sealing gasket 6 fits with the inner arc surfaces of the two flange joints 3. The third sealing gasket 8 is located outside the first pipeline 1 and the second pipeline 2, and a side of the third sealing gasket 8 close to the first sealing gasket 6 fits with the outer arc surfaces of the two flange joints 3 to seal the outer connection of the two flange joints 3. The second sealing gasket 7 is located inside the first pipeline 1 and the second pipeline 2, and a side of the third sealing gasket 8 close to the first sealing gasket 6 fits with the inner arc surfaces of the two flange joints 3 to seal the inner connection of the two flange joints 3. Multi-layer sealing is performed simultaneously from three positions, which has a better anti-leakage effect.
[0020] See also Figure 2-3 In order to make the second sealing gasket 7 have a better sealing effect on the inner connection of the two flange joints 3, the side of the second sealing gasket 7 away from the first sealing gasket 6 is set to an arcuate surface. The setting of the arcuate surface makes the part of the second sealing gasket 7 located at the inner connection of the two flange joints 3 thicker so as to have better pressure resistance and thus better sealing effect.
[0021] See also Figure 2-3 In order to make the second sealing gasket 7 have a better sealing effect on the inner connection of the two flange joints 3, grooves 9 are opened at the positions of the inner walls of the first pipeline 1 and the second pipeline 2 corresponding to the flange joints 3, and the side of the second sealing gasket 7 close to the first sealing gasket 6 fits with the inner surface of the groove 9. The setting of the groove 9 enables the two ends of the second sealing gasket 7 to be respectively inserted into the first pipeline 1 and the second pipeline 2, thereby preventing the flow of the internal medium of the first pipeline 1 and the second pipeline 2 from impacting the connecting ends of the second sealing gasket 7 and the first pipeline 1 and the second pipeline 2, causing the curling of the second sealing gasket 7 to separate from the first pipeline 1 and the second pipeline 2.
[0022] See also Figure 1-3 In order to realize the connection between the two flange joints 3 , a fastener 4 is provided between the two flange joints 3 , and the two flange joints 3 are fastened and connected by the fastener 4 .
[0023] See also Figure 1-3 Preferably, the fastener 4 is a bolt, which can realize the fastening connection of the two flange joints 3 by the fastener 4 and has low cost.
[0024] The working principle and use process of the utility model are as follows: when in use, the sealing member 5 is placed on the flange joint 3 of the second pipe 2, and then the flange joint 3 of the first pipe 1 is placed on the sealing member 5, and the two flange joints 3 are fastened and connected by the fastener 4. At this time, the first sealing gasket 6 is located between the two flange joints 3, and the upper and lower surfaces of the first sealing gasket 6 are respectively fitted with the two flange joints 3 to seal the connection surfaces of the two flange joints 3. The second sealing gasket 7 is located inside the first pipe 1 and the second pipe 2, and the side of the second sealing gasket 7 close to the first sealing gasket 6 is fitted with the inner arc surfaces of the two flange joints 3 to seal the two flange joints 3. The inner connection of the second pipe 1 and the second pipe 2 is sealed, the third sealing gasket 8 is located outside the first pipe 1 and the second pipe 2, and the side of the third sealing gasket 8 close to the first sealing gasket 6 is in contact with the outer arc surface of the two flange joints 3 to seal the outer connection of the two flange joints 3. Multi-layer sealing is performed simultaneously from three positions, which has a better anti-leakage effect. The arrangement of the groove 9 enables the two ends of the second sealing gasket 7 to be respectively inserted into the first pipe 1 and the second pipe 2, so as to prevent the flow of the internal medium of the first pipe 1 and the second pipe 2 from impacting the connection end of the second sealing gasket 7 and the first pipe 1 and the second pipe 2, resulting in the curling of the second sealing gasket 7 and the first pipe 1 and the second pipe 2. Separation.
[0025] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A pressure pipe flange joint, comprising a first pipe (1) and a second pipe (2), wherein the first pipe (1) and the second pipe (2) are both fixedly connected to a flange joint (3) at one end thereof, and characterized in that: A sealing member (5) is provided between the two flange joints (3), and the sealing member (5) comprises a first sealing gasket (6) provided between the two flange joints (3); a third sealing gasket (8) is fixedly provided on an outer arc surface of the first sealing gasket (6); a side of the third sealing gasket (8) close to the first sealing gasket (6) is in contact with the outer arc surfaces of the two flange joints (3); a second sealing gasket (7) is fixedly provided on an inner arc surface of the first sealing gasket (6); a side of the second sealing gasket (7) close to the first sealing gasket (6) is in contact with the inner arc surfaces of the two flange joints (3).
2. A pressure pipe flange joint according to claim 1, characterized in that: The side of the second sealing gasket (7) away from the first sealing gasket (6) is configured as an arc-shaped surface.
3. A pressure pipe flange joint according to claim 2, characterized in that: A groove (9) is provided on the inner wall of the first pipe (1) and the second pipe (2) at a position corresponding to the flange joint (3), and a side of the second sealing gasket (7) close to the first sealing gasket (6) fits with the inner surface of the groove (9).
4. The pressure pipe flange joint according to claim 1, characterized in that: A fastener (4) is provided between the two flange joints (3).
5. A pressure pipe flange joint according to claim 4, characterized in that: The fastener (4) is a bolt.