Self-sealing groove crossover flange device

Abstract

The utility model provides a self-sealing groove crossover flange device, which relates to the technical field of crossover flanges and comprises a sealing groove, an elastic rubber ring for sealing is arranged in the sealing groove, a plurality of annular top sheets for supporting the elastic rubber ring are arranged in the elastic rubber ring, and the elastic rubber ring and the annular top sheets are arranged in the sealing groove. And one end of the annular top piece is communicated with a sealing cavity for storing inert gas. The flange has the advantages that the adjustable elastic rubber ring is arranged in the sealing groove of the flange to increase the fastening pressure between the flange and the pipeline, the stability of the flange and the pipeline is improved, and the fastening ejector block extruded by the pipeline is arranged at the end, provided with the pipeline, of the flange to push the fastening rod to adjust the air pressure in the sealing cavity. The annular jacking piece is pushed to push the elastic rubber ring to move through air pressure changes, the connection tightness of the flange groove is enhanced, the installation pressure between the flange and a pipeline is further enhanced, and the flange installation stability can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of conversion flange technology, and in particular to a self-sealing grooved conversion flange device. Background Technology

[0002] A conversion flange is a special type of flange primarily used to connect pipes of different sizes or types, allowing for pipe expansion and contraction adjustments. It typically consists of two flanges bolted together, one fixed and the other movable. By adjusting the movable pipe in the middle, the distance between the two fixed flanges can be changed, thus accommodating pipe elongation or shortening requirements. Conversion flanges are widely used in applications requiring pipe expansion and contraction or connecting pipes of different sizes and types. Self-sealing grooved conversion flanges have grooves at one end, allowing them to be connected to pipes with corresponding grooves using clamps.

[0003] However, existing self-sealing grooved conversion flange devices have poor pipe tightening during use, and additional tightening is often required at the groove, making them inconvenient to use. Utility Model Content

[0004] Therefore, the purpose of this utility model is to propose a self-sealing grooved conversion flange device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a self-sealing grooved conversion flange device, comprising two flanges made of alloy materials and of different specifications, with a transition adjustment sleeve fitted between the two flanges. One end of each flange has a sealing groove for connecting a pipeline, and an elastic rubber ring for sealing is provided inside the sealing groove. The elastic rubber ring has a plurality of annular top pieces for supporting it inside, and one end of each annular top piece is connected to a sealing cavity for storing inert gas. A fastening rod for compression adjustment is provided inside the sealing cavity, and a fastening block for supporting the pipeline is fixedly installed at one end of the fastening rod.

[0006] Preferably, in any of the above embodiments, the flange has several through holes for connection around its circumference, and two flanges are connected by bolts and nuts passing through the through holes. The diameter of the transition adjusting sleeve is smaller than the diameter of the flange.

[0007] The above technical solution is adopted: the through holes on the circumference of the flange are used to install bolts and nuts. By tightening the bolts and nuts, the two flanges are tightly connected together, ensuring the structural stability of the entire device. The transition adjustment sleeve fits between the two flanges. Its diameter is smaller than that of the flange. It not only serves to connect flanges of different specifications, but also compensates for the size differences when connecting pipelines to a certain extent, so that the device can adapt to the connection requirements of different pipelines.

[0008] Preferably, in any of the above embodiments, the sealing groove is located at the end of the flange away from the transition adjusting sleeve, the sealing groove is connected to the sealing cavity, and an annular groove for accommodating the fastening top block is provided on one side of the sealing groove.

[0009] The above technical solution is adopted: the sealing groove is connected to the sealing cavity, providing a channel for subsequent sealing and tightening adjustment. The annular groove on one side of the sealing groove is used to accommodate the fastening top block, so that the fastening top block can move stably along the annular groove when supporting and squeezing the pipeline, thereby enhancing the tightening effect on the pipeline and ensuring the sealing of the entire device.

[0010] Preferably, in any of the above embodiments, the elastic rubber ring is made of an elastic material, and the inner diameter of the elastic rubber ring is larger than the inner diameter of the sealing groove.

[0011] The above technical solution is adopted: when the pipeline is installed, the elastic rubber ring will be squeezed and deformed elastically, tightly fitting between the pipeline and the sealing groove, forming the first line of sealing defense, effectively preventing liquid or gas leakage, improving the sealing performance of the flange and pipeline connection, and ensuring the normal operation of the device under different working conditions.

[0012] Preferably, in any of the above embodiments, the annular top plate includes a sealing rod made of elastic sealing material and an arc-shaped plate with an arc structure. The sealing rod is movably connected to the inside of the flange. The sealing rod is located at one end of the sealing cavity. An arc-shaped plate located inside the sealing groove is fixedly installed at one end of the sealing rod. The arc-shaped plate is fixedly installed inside the elastic rubber ring.

[0013] The above technical solution involves connecting the arc-shaped plate to the elastic rubber ring. When the air pressure inside the sealing cavity changes, the sealing rod moves accordingly, causing the arc-shaped plate to push the elastic rubber ring, further adjusting the pressure between the elastic rubber ring and the pipeline, enhancing the sealing effect, and providing stable support for the elastic rubber ring to ensure the reliability of its sealing performance.

[0014] Preferably, in any of the above embodiments, the sealing cavity is opened inside the flange, and the fastening rod includes a fastening spring that provides support and a movable push rod. The fastening spring is fixedly installed inside the sealing cavity, and one end of the fastening spring is fixedly installed with a push rod that moves inside the sealing cavity.

[0015] The above technical solution involves a sealing cavity located inside the flange to store inert gas and accommodate a fastening rod. A fastening spring is fixed inside the sealing cavity to provide elastic support for the push rod. When the pipeline is installed, the fastening top block is squeezed, causing the push rod to move within the sealing cavity, compressing or releasing the inert gas and changing the air pressure inside the sealing cavity. This change in air pressure then pushes the annular top plate, adjusting the elastic rubber ring and enhancing the tightness of the connection between the flange and the pipeline.

[0016] Preferably, in any of the above embodiments, the fastening top block includes a hemisphere and a sealing ring made of sealing material for connection, the hemisphere is fixedly installed at one end of the push rod, and the sealing ring that moves inside the annular groove is fixedly installed on the surface of the hemisphere.

[0017] The above technical solution is adopted: when installing the pipeline, the hemisphere squeezes the inner wall of the pipeline to provide additional fastening force. The sealing ring in the annular groove can not only ensure the stable movement of the fastening top block, but also enhance the sealing between it and the flange. Together with the elastic rubber ring, it fastens and seals the pipeline from both the inside and outside, greatly improving the stability of the flange connection.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. An adjustable elastic rubber ring is installed inside the sealing groove of the flange to increase the tightening pressure between the flange and the pipeline, thereby improving the stability of the flange and pipeline installation. A fastening block is installed at the pipeline end of the flange, which is squeezed by the pipeline to push the fastening rod and adjust the air pressure inside the sealing cavity. The change in air pressure pushes the annular top plate to move the elastic rubber ring, enhancing the tightness of the connection at the flange groove and further increasing the installation pressure between the flange and the pipeline, which can effectively improve the stability of the flange installation.

[0020] 2. By squeezing the inner wall of the installed pipe with the fastening top block, the squeezing effect on the pipe installation can be enhanced on one side of the flange groove. Combined with the position of the elastic rubber ring at the flange groove, a fastening effect is formed between the flange and the pipe. The interaction of the two fastening points ensures the stability of the flange connection.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the annular top piece according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the fastening rod according to an embodiment of the present utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the flange according to an embodiment of the present utility model;

[0028] Wherein: 1-Flange, 2-Transition adjustment sleeve, 3-Sealing groove, 4-Elastic rubber ring, 5-Annular top piece, 51-Sealing top rod, 52-Arc-shaped piece, 6-Sealing cavity, 7-Fastening rod, 71-Fastening spring, 72-Push rod, 8-Fastening top block, 81-Hemisphere, 82-Sealing ring, 9-Annular groove. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0030] like Figure 1-5 As shown in the figure, a self-sealing grooved conversion flange device of this utility model includes two flanges 1 made of alloy materials and of different specifications. A transition adjustment sleeve 2 is provided between the two flanges 1 and fits between them. One end of the flange 1 is provided with a sealing groove 3 for connecting the pipeline. An elastic rubber ring 4 is provided inside the sealing groove 3 for sealing. Several annular top pieces 5 are provided inside the elastic rubber ring 4 for supporting it. One end of the annular top pieces 5 is connected to a sealing cavity 6 for storing inert gas. A fastening rod 7 for compression adjustment is provided inside the sealing cavity 6. A fastening block 8 for supporting the pipeline is fixedly installed at one end of the fastening rod 7.

[0031] Preferably, in any of the above schemes, the flange 1 has several through holes for connection around its circumference, and the two flanges 1 are connected by bolts and nuts passing through the through holes. The diameter of the transition adjusting sleeve 2 is smaller than the diameter of the flange 1.

[0032] The above technical solution is adopted: the through holes on the circumference of flange 1 are used to install bolts and nuts. By tightening the bolts and nuts, the two flanges 1 are tightly connected together to ensure the structural stability of the entire device. The transition adjustment sleeve 2 is fitted between the two flanges 1. Its diameter is smaller than that of flange 1. It not only serves to connect flanges 1 of different specifications, but also compensates for the size difference when connecting pipelines to a certain extent, so that the device can adapt to the connection requirements of different pipelines.

[0033] Preferably, in any of the above schemes, the sealing groove 3 is located at the end of the flange 1 away from the transition adjusting sleeve 2, the sealing groove 3 is connected to the sealing cavity 6, and an annular groove 9 for accommodating the fastening top block 8 is provided on one side of the sealing groove 3.

[0034] The above technical solution is adopted: the sealing groove 3 is connected to the sealing cavity 6, providing a channel for subsequent sealing and fastening adjustment. The annular groove 9 on one side of the sealing groove 3 is used to accommodate the fastening top block 8, so that the fastening top block 8 can move stably along the annular groove 9 when supporting and squeezing the pipeline, thereby enhancing the fastening effect on the pipeline and ensuring the sealing of the entire device.

[0035] Preferably, in any of the above solutions, the elastic rubber ring 4 is made of elastic material, and the inner diameter of the elastic rubber ring 4 is larger than the inner diameter of the sealing groove 3.

[0036] The above technical solution is adopted: when the pipeline is installed, the elastic rubber ring 4 will be squeezed and deform elastically, tightly fitting between the pipeline and the sealing groove 3, forming the first line of sealing defense, effectively preventing liquid or gas leakage, improving the sealing performance of the flange and pipeline connection, and ensuring the normal operation of the device under different working conditions.

[0037] Preferably, in any of the above embodiments, the annular top plate 5 includes a sealing top rod 51 made of elastic sealing material and an arc-shaped plate 52 with an arc structure. The sealing top rod 51 is movably connected to the inside of the flange 1. The sealing top rod 51 is located at one end of the sealing cavity 6. The arc-shaped plate 52 located inside the sealing groove 3 is fixedly installed at one end of the sealing top rod 51. The arc-shaped plate 52 is fixedly installed inside the elastic rubber ring 4.

[0038] The above technical solution is adopted: the arc-shaped piece 52 is connected to the elastic rubber ring 4. When the air pressure in the sealing cavity 6 changes, the sealing top rod 51 will move accordingly, driving the arc-shaped piece 52 to push the elastic rubber ring 4, further adjusting the pressure between the elastic rubber ring 4 and the pipeline, enhancing the sealing effect, and providing stable support for the elastic rubber ring 4 to ensure the reliability of its sealing performance.

[0039] Preferably, in any of the above embodiments, the sealing cavity 6 is opened inside the flange 1, and the fastening rod 7 includes a fastening spring 71 that provides support and a push rod 72 that moves within the sealing cavity 6. The fastening spring 71 is fixedly installed inside the sealing cavity 6, and one end of the fastening spring 71 is fixedly installed with the push rod 72 that moves within the sealing cavity 6.

[0040] The above technical solution is adopted: the sealing cavity 6 is opened inside the flange 1 to store inert gas and accommodate the fastening rod 7. The fastening spring 71 is fixed in the sealing cavity 6 to provide elastic support for the push rod 72. When the pipeline is installed, the fastening top block 8 is squeezed, and the push rod 72 will move in the sealing cavity 6, compressing or releasing the inert gas, changing the air pressure in the sealing cavity 6, and then pushing the annular top plate 5 through the air pressure change to adjust the elastic rubber ring 4, thereby enhancing the tightness of the flange and pipeline connection.

[0041] Preferably, in any of the above embodiments, the fastening block 8 includes a hemisphere 81 and a sealing ring 82 made of sealing material for connection. The hemisphere 81 is fixedly installed at one end of the push rod 72, and the sealing ring 82, which moves inside the annular groove 9, is fixedly installed on the surface of the hemisphere 81.

[0042] By adopting the above technical solution: when installing the pipeline, the hemisphere 81 squeezes the inner wall of the pipeline to provide additional fastening force. The sealing ring 82 in the annular groove 9 can not only ensure the stable movement of the fastening top block 8, but also enhance the sealing between it and the flange 1. Together with the elastic rubber ring 4, it fastens and seals the pipeline from both the inside and outside, greatly improving the stability of the flange connection.

[0043] The working principle of this self-sealing grooved conversion flange device is as follows:

[0044] During pipe installation, first connect the two flanges 1 through the circumferential through-holes using bolts and nuts. Insert the pipe into the sealing groove 3 of the flange 1. The pipe compresses the fastening block 8, and the hemispherical part 81 of the fastening block 8 pushes the push rod 72 of the fastening rod 7. The push rod 72 moves within the sealing cavity 6, compressing the inert gas inside the sealing cavity 6, increasing the air pressure. The air pressure pushes the sealing rod 51 of the annular top plate 5, causing the arc-shaped plate 52 to compress the elastic rubber ring 4. The elastic rubber ring 4 originally has an inner diameter larger than the sealing groove 3. The inner diameter, after being squeezed, fits tightly against the pipe and sealing groove 3, enhancing the sealing effect. At the same time, the sealing ring 82 moves within the annular groove 9, and the hemisphere 81 tightly squeezes the inner wall of the pipe, forming two fastening points with the elastic rubber ring 4. If there is a pressure change or slight displacement in the pipe, the fastening spring 71 in the sealing cavity 6 will push the push rod 72 to reset or make a fine adjustment. The compression degree of the elastic rubber ring 4 is adjusted again through the annular top plate 5, continuously maintaining a good sealing and fastening state, ensuring a stable connection between the flange and the pipe, and preventing leakage.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. An adjustable elastic rubber ring 4 is installed inside the sealing groove 3 of the flange to increase the tightening pressure between the flange and the pipeline, thereby improving the stability of the flange and pipeline installation. A fastening top block 8, which is squeezed by the pipeline, is installed at the end of the flange where the pipeline is installed. This block pushes the fastening rod 7 to adjust the air pressure inside the sealing cavity 6. The change in air pressure pushes the annular top piece 5 to move the elastic rubber ring 4, thereby enhancing the tightness of the connection at the flange groove and further increasing the installation pressure between the flange and the pipeline, thus improving the stability of the flange installation.

[0047] 2. By squeezing the inner wall of the installed pipe with the fastening top block 8, the squeezing effect on the pipe installation can be enhanced on one side of the flange groove. Combined with the position of the elastic rubber ring 4 at the flange groove, a fastening effect is formed between the flange and the pipe. The interaction of the two fastening points ensures the stability of the flange connection.

Claims

1. A self-sealing groove conversion flange device, comprising two flanges (1) made of alloy material and different in size, a transition adjusting sleeve (2) is arranged between the two flanges (1) and is sleeved with each other, characterized in that: One end of the flange plate (1) is provided with a sealing groove (3) connected with the pipeline, the inside of the sealing groove (3) is provided with an elastic rubber ring (4) for sealing, the inside of the elastic rubber ring (4) is provided with a plurality of annular top pieces (5) for supporting, one end of the annular top piece (5) is communicated with a sealed cavity (6) for storing inert gas, the inside of the sealed cavity (6) is provided with a fastening rod (7) for extrusion adjustment, one end of the fastening rod (7) is fixedly installed with a fastening top block (8) for supporting the pipeline.

2. A self-sealing grooved transition flange apparatus as claimed in claim 1, wherein: The circumference of the flange plate (1) is provided with a plurality of through holes for connection, two flange plates (1) are connected by bolts and nuts penetrating through the through holes, and the diameter of the transition adjustment sleeve (2) is smaller than the diameter of the flange plate (1).

3. A self-sealing grooved transition flange apparatus as claimed in claim 2, wherein: The sealing groove (3) is located at one end of the flange plate (1) away from the transition adjustment sleeve (2), the sealing groove (3) and the sealed cavity (6) are communicated, and the sealing groove (3) is provided with an annular groove (9) on one side for accommodating the fastening top block (8).

4. A self-sealing grooved transition flange apparatus as claimed in claim 3, wherein: The elastic rubber ring (4) is made of elastic material, and the inner diameter of the elastic rubber ring (4) is larger than the inner diameter of the sealing groove (3).

5. A self-sealing grooved transition flange apparatus as claimed in claim 4, wherein: The annular top piece (5) comprises a sealing top rod (51) made of elastic sealing material and an arc-shaped piece (52) with an arc-shaped structure, the sealing top rod (51) is movably connected to the inside of the flange plate (1), one end of the sealing top rod (51) is located in the sealed cavity (6), one end of the sealing top rod (51) is fixedly installed with the arc-shaped piece (52) located in the inside of the sealing groove (3), and the arc-shaped piece (52) is fixedly installed in the inside of the elastic rubber ring (4).

6. A self-sealing grooved transition flange apparatus as claimed in claim 5, wherein: The sealing cavity (6) is provided in the inside of the flange plate (1), the fastening rod (7) comprises a fastening spring (71) for providing support and a push rod (72) for movement, the fastening spring (71) is fixedly installed in the inside of the sealing cavity (6), and one end of the fastening spring (71) is fixedly installed with the push rod (72) movably arranged in the inside of the sealing cavity (6).

7. A self-sealing grooved transition flange apparatus as claimed in claim 6, wherein: The fastening top block (8) comprises a hemisphere (81) for connection and a sealing ring (82) made of sealing material, the hemisphere (81) is fixedly installed at one end of the push rod (72), and the surface of the hemisphere (81) is fixedly installed with the sealing ring (82) movably arranged in the inside of the annular groove (9).

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