High-pressure self-tightening flange of T-shaped pad structure

Abstract

The utility model relates to the technical field of self-tightening flanges, and discloses a high-pressure self-tightening flange of a T-shaped gasket structure, which comprises a clamping seat, a socket, a sealing unit and a fastening unit, a placing through hole is arranged in the middle of one side of the clamping seat, the socket is arranged in the placing through hole, the socket is connected with the inner side wall of the placing through hole, and the fastening unit is arranged in the placing through hole. The sealing unit is arranged in the socket and is used for sealing the socket; at least four sets of fastening holes are formed in the upper surface of the clamping base, the fastening units are arranged in the fastening holes, and the fastening units are used for fastening the clamping base. Through reasonable component configuration and design, stable connection and reliable sealing in a high-pressure environment are ensured, so that the safety is improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of self-tightening flanges, in particular to a high-pressure self-tightening flange with a T-shaped pad structure. Background Art

[0002] In high-pressure pipeline systems, flange connection is a common connection method, and its main function is to ensure reliable connection between pipelines and maintain the sealing of the system. This connection method usually involves connecting two pipe ends through flanges and fixing them together with fasteners such as bolts.

[0003] However, the traditional flange connection method has some inherent problems in high-pressure environments. Due to the extremely high internal pressure of the high-pressure pipeline system, the traditional flange connection is prone to leakage when subjected to high pressure for a long time, which not only leads to the loss of the medium, but also may cause safety accidents. In addition, the fasteners may gradually loosen due to factors such as vibration, temperature changes and material fatigue during long-term use. This loosening will further increase the risk of leakage and affect the safe and stable operation of the entire system. Therefore, in order to improve the reliability and safety of the high-pressure pipeline system, it is particularly important to develop and adopt more advanced flange connection technology.

[0004] Therefore, it is of great practical significance to develop a high-pressure self-tightening flange with simple structure, good sealing performance and strong self-tightening ability. Utility Model Content

[0005] In view of this, the utility model aims at the deficiencies of the prior art and proposes a high-pressure self-tightening flange with a T-type pad structure, aiming to solve the problem.

[0006] The utility model provides a high-pressure self-tightening flange of a T-shaped gasket structure, comprising: a holder, a sleeve, a sealing unit and a fastening unit, wherein a placement through hole is arranged in the middle of one side of the holder, the sleeve is arranged inside the placement through hole, the sleeve is connected to the inner side wall of the placement through hole, the sealing unit is arranged inside the sleeve, and the sealing unit is used to seal the sleeve;

[0007] At least four groups of fastening holes are opened on the upper surface of the card base, and the fastening unit is arranged inside the fastening holes, and the fastening unit is used to fasten the card base.

[0008] Furthermore, the card holder includes:

[0009] The ferrules are provided in two groups, and the two groups of ferrules are arranged correspondingly in the vertical direction, wherein one end of the two groups of ferrules correspondingly arranged is provided with a groove, so that when the two groups of ferrules are connected, the placement through hole is formed between the two groups of grooves;

[0010] At least four groups of fastening holes are provided, and the four groups of fastening holes are respectively opened at the corners of the end of the ferrule away from the groove;

[0011] A positioning groove is arranged at the inner bottom of the groove.

[0012] Furthermore, a conical lip is provided at one end of the ferrule away from the fastening hole, and an end surface of the pressure-bearing side of the conical lip forms a first angle with the axis of the sleeve, wherein the conical lip is parallel to the lip of the ferrule.

[0013] Furthermore, the planar auxiliary portion of the ferrule is provided with a conical support platform, the semi-cone angle of the conical support platform is greater than 0.2, and the semi-cone angle of the support platform is less than or equal to 1.

[0014] Furthermore, the conical support platform and the straight edge portion of the lip of the ferrule are provided with an arc angle.

[0015] Further, the sleeve comprises:

[0016] The flanges are provided in two groups, and the two groups of flanges are arranged side by side inside the groove along the setting direction of the groove, and the flanges are connected to the inner side wall of the groove.

[0017] Furthermore, the sealing unit is a sealing gasket, and the sealing gasket is respectively arranged between the two groups of flanges, and the sealing gasket is respectively connected to one side of the two groups of flanges.

[0018] Furthermore, the ends of the two sets of flanges that are far away from each other are respectively provided with a first connection structure, a second connection structure and a third connection structure, wherein:

[0019] The first connection structure and the second connection structure are respectively spherical ring structures, wherein the diameter of the first connection structure in the middle is larger than the diameters of the first connection structure at both ends, the diameter of the second connection structure in the middle is larger than the diameters of the second connection structure at both ends, and the diameter of the second connection structure in the middle is smaller than or equal to the diameter of the first connection structure at the end;

[0020] The third connection structure is a conical ring structure, and the diameter of one end of the third connection structure adjacent to the second connection structure is larger than the diameter of one end of the third connection structure away from the second connection structure.

[0021] Furthermore, a positioning ring is provided on a side of the flange away from the sealing gasket, the positioning ring is provided corresponding to the positioning groove, and the positioning ring is clamped with the flange.

[0022] Furthermore, the fastening unit comprises:

[0023] A fastening bolt, one end of which passes through the fastening holes of the two groups of ferrules respectively, and the fastening bolt is used to connect the two groups of ferrules;

[0024] Two groups of spherical nuts are provided, and the two groups are respectively arranged at two ends of the fastening bolt, and the spherical nuts are threadedly connected with the fastening bolt.

[0025] Compared with the prior art, the beneficial effect of the utility model is that by designing a through hole on the base and installing a sleeve inside the through hole, this structure ensures high-precision positioning during flange installation. The connection between the sleeve and the inner wall of the through hole not only enhances the stability of the flange, but also improves the overall impact resistance. Since the sleeve is closely matched with the inner wall of the base, when subjected to high pressure, the force can be effectively dispersed to avoid local stress concentration, which helps to extend the service life of the flange. Secondly, the sealing unit is located inside the sleeve and bears an important sealing function. Since the sealing unit directly acts on the inner cavity of the sleeve, it can effectively isolate the high-pressure fluid or gas to avoid leakage problems. The reasonable design and material selection of the sealing unit ensure that it can still maintain a good sealing effect under harsh working conditions such as high temperature and high pressure. This has a very critical safety guarantee role for pipeline systems that require high reliability and pressure resistance. Finally, at least four sets of fastening holes are opened on the upper surface of the base, which facilitates the installation of the fastening unit. The fastening unit can achieve uniform and stable fastening through these fastening holes to prevent the flange from loosening or uneven force during use. This design can further improve the safety and stability of the system, especially in the case of long-term operation or frequent changes in high pressure, it can effectively maintain the stability of the flange and prevent the risk of accidental falling off or leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a high-pressure self-tightening flange with a T-shaped gasket structure provided in an embodiment of the utility model;

[0027] Figure 2 A side view of a high-pressure self-tightening flange with a T-shaped gasket structure provided by an embodiment of the utility model;

[0028] Figure 3 A front view of a high-pressure self-tightening flange with a T-shaped gasket structure provided by an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of the structure of a high-pressure self-tightening flange with a T-shaped gasket structure provided by an embodiment of the utility model;

[0030] Among them: 100, socket; 200, sleeve; 300, sealing gasket; 400, fastening unit; 110, ferrule; 111, groove; 130, positioning groove; 210, flange; 220, positioning ring; 410, fastening bolt; 420, ball nut. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In high-pressure pipeline systems, flange connection is a common connection method, and its main function is to ensure reliable connection between pipelines and maintain the sealing of the system. This connection method usually involves connecting two pipe ends through flanges and fixing them together with fasteners such as bolts.

[0036] However, the traditional flange connection method has some inherent problems in high-pressure environments. Due to the extremely high internal pressure of the high-pressure pipeline system, the traditional flange connection is prone to leakage when subjected to high pressure for a long time, which not only leads to the loss of the medium, but also may cause safety accidents. In addition, the fasteners may gradually loosen due to factors such as vibration, temperature changes and material fatigue during long-term use. This loosening will further increase the risk of leakage and affect the safe and stable operation of the entire system. Therefore, in order to improve the reliability and safety of the high-pressure pipeline system, it is particularly important to develop and adopt more advanced flange connection technology.

[0037] In view of this, the utility model aims at the deficiencies of the prior art and proposes a high-pressure self-tightening flange with a T-type pad structure, aiming to solve the problem.

[0038] like Figure 1-Figure 4 As shown, in some embodiments of the present application, a high-pressure self-tightening flange with a T-shaped gasket structure includes: a base 100, a sleeve 200, a sealing unit and a fastening unit 400. A placement through hole is provided in the middle of one side of the base 100, the sleeve 200 is provided inside the placement through hole, the sleeve 200 is connected to the inner side wall of the placement through hole, the sealing unit is provided inside the sleeve 200, and the sealing unit is used to seal the sleeve 200; at least four groups of fastening holes are provided on the upper surface of the base 100, the fastening unit 400 is provided inside the fastening holes, and the fastening unit 400 is used to fasten the base 100.

[0039] It can be seen that the placement through hole in the middle of the card holder 100 is the core part of the structure of the flange 210, which plays the role of positioning and fixing the sleeve 200. By embedding the sleeve 200 into the placement through hole, the tight connection between the sleeve 200 and the inner wall of the card holder 100 is ensured. This design not only ensures the stability of the flange 210, but also reduces the impact of external factors on the flange 210, so that it can maintain reliable physical properties under high-pressure working environment. In addition, the design of placing the through hole can ensure that the sleeve 200 is accurately positioned during installation, reduce installation errors, and improve the overall operating performance of the flange 210. Secondly, the cooperation between the sleeve 200 and the sealing unit constitutes the sealing mechanism of the flange 210. The sealing unit is arranged inside the sleeve 200, and through close physical contact and precise sealing materials, it can effectively prevent the leakage of the internal high-pressure medium. Since the sealing unit is designed inside the sleeve 200, the direct influence of the external environment is avoided, and the reliability of the seal is further improved. This structural design can not only adapt to high-pressure working conditions, but also to harsh environments with large temperature changes, making the flange 210 widely applicable in a variety of industrial scenarios. The fastening unit 400 is connected to the base 100 through the fastening holes on the base 100, providing a solid support for the entire structure. The design of at least four groups of fastening holes ensures that the fastening unit 400 can evenly distribute the pressure on the flange 210 to avoid local stress concentration causing structural loosening or deformation. Under high pressure, the fastening unit 400 fixes the base 100 through the fastening holes, which not only enhances the stability of the flange 210, but also further prevents the loosening and fatigue failure of the fasteners, thereby improving the durability of the flange 210 system.

[0040] Specifically, the ferrule 110 includes: two groups of ferrules 110 are provided, and the two groups of ferrules 110 are arranged correspondingly in the vertical direction, wherein a groove 111 is opened at one end where the two groups of ferrules 110 are arranged correspondingly, so that when the two groups of ferrules 110 are connected, a placement through hole is formed between the two groups of grooves 111; at least four groups of fastening holes are provided, and the four groups of fastening holes are respectively opened at the corners of one end of the ferrule 110 away from the groove 111; the positioning groove 130 is opened at the inner bottom of the groove 111.

[0041] Specifically, a conical lip is provided at one end of the ferrule 110 away from the fastening hole, and an end surface of the pressure-bearing side of the conical lip forms a first angle with the axis of the sleeve 200 , wherein the conical lip is parallel to the lip of the ferrule 110 .

[0042] Specifically, the planar auxiliary portion of the ferrule 110 is provided with a conical support platform, the semi-cone angle of the conical support platform is greater than 0.2, and the semi-cone angle of the support platform is less than or equal to 1.

[0043] Specifically, an arc angle is provided between the conical support platform and the straight edge of the lip of the ferrule 110 .

[0044] It can be seen that the card holder 100 is composed of two groups of card sleeves 110, and the two groups of card sleeves 110 are arranged correspondingly in the vertical direction, and the placement through holes are formed by the mutual cooperation of the grooves 111 at both ends. This design ensures that the card sleeves 110 can be accurately aligned during assembly to form a stable overall structure. Through the combination of the grooves 111, the card holder 100 can effectively disperse the pressure when subjected to force, avoiding the problem of local stress concentration caused by single-point force. At the same time, the placement through hole provides space for installing and fixing the sleeve 200, ensuring the stability of the flange 210 system under high pressure. Secondly, the four groups of fastening holes of the card holder 100 are respectively arranged at the corners of the card sleeve 110 away from the end of the groove 111. This design ensures that the fastening unit 400 can provide uniform fastening force during installation. In actual work, the evenly distributed fastening holes enable the card holder 100 to be subjected to high pressure. The force can be evenly transmitted to each part, avoiding the problems of loosening and deformation of the flange 210 caused by uneven force. In this way, not only the pressure resistance of the flange 210 system is improved, but also its service life is extended, which is suitable for complex working conditions requiring high-pressure sealing and stability. In the structural design of the ferrule 110, the conical lip is located at the end away from the fastening hole. The end face of the pressure-bearing side of the conical lip forms a first angle with the axis of the sleeve 200. Such a geometric design enables the ferrule 110 to effectively disperse the pressure applied in the axial direction when it is under pressure, and prevent local stress concentration. At the same time, the design of the conical lip improves the effectiveness of the sealing unit, and can ensure the sealing performance between the ferrule 100 and the sleeve 200 under high pressure, further enhancing the sealing reliability of the flange 210 in complex environments. In addition, a conical support platform is provided on the plane auxiliary part of the ferrule 110, and its designed semi-cone angle is between 0.2 and 1. This precise angle range ensures that the support platform can provide stable support when subjected to force, and avoids excessive deformation of the ferrule 100 under high pressure. The angle design of the support platform also optimizes the pressure transmission path, so that the pressure can be evenly distributed from the surface of the base 100 to the entire flange 210 structure, improving the bearing capacity and durability of the flange 210. Finally, the straight edge part of the conical support platform and the lip of the ferrule 110 is provided with an arc angle, which further optimizes the force performance. The arc angle design not only reduces the stress concentration of the straight edge part, but also improves the fatigue resistance of the base 100 in a high-pressure working environment and extends its service life. Through this structural optimization, the flange 210 system can remain stable when repeatedly subjected to high-pressure shocks, ensuring the safety of long-term operation.

[0045] Specifically, the sleeve 200 includes: two groups of flanges 210 , and the two groups of flanges 210 are arranged side by side inside the groove 111 along the arrangement direction of the groove 111 , and the flanges 210 are connected to the inner side wall of the groove 111 .

[0046] Specifically, the sealing unit is a sealing gasket 300 , which is disposed between two groups of flanges 210 , and the sealing gasket 300 is connected to one side of the two groups of flanges 210 , respectively.

[0047] Specifically, a positioning ring 220 is further provided on the side of the flange 210 away from the sealing gasket 300 . The positioning ring 220 is provided corresponding to the positioning groove 130 , and the positioning ring 220 is clamped with the flange 210 .

[0048] It can be seen that the flange 210 structure in the sleeve 200 is arranged side by side along the direction of the groove 111 by two groups of flanges 210. This design ensures that the flange 210 can be tightly connected to the inner wall of the groove 111, thereby ensuring the fixity and stability of the flange 210. Under high-pressure conditions, the side-by-side design of the flange 210 enables it to withstand pressure from all directions and effectively disperse stress, avoiding damage caused by local stress concentration. In addition, the connection between the flange 210 and the inner wall of the groove 111 enhances the stability of the sleeve 200 in the overall structure, so that it can still maintain a stable state when subjected to high pressure or vibration, avoiding loosening or displacement. Secondly, the sealing unit, as a key component of the flange 210, is arranged between the two groups of flanges 210 through the sealing gasket 300, forming an effective sealing barrier. The sealing gasket 300 is tightly connected to one side of the flange 210, ensuring that the sealing gasket 300 can withstand the impact of fluid or gas under high pressure conditions to prevent medium leakage. The design of the sealing structure not only improves the sealing effect by placing the sealing gasket 300 between the flanges 210, but also reduces the gap between the flanges 210, thereby further enhancing the sealing performance. The material selected for the sealing gasket 300 can adapt to different working conditions, such as high temperature, high pressure, corrosive environment, etc., to ensure reliable sealing performance in a variety of industrial environments. A positioning ring 220 is provided on the side of the flange 210 away from the sealing gasket 300. This design is an important mechanism for achieving accurate positioning of the sleeve 200. The positioning ring 220 is arranged corresponding to the positioning groove 130. The flange 210 and the positioning ring 220 are connected by the clamping, which ensures that the flange 210 always maintains accurate positioning during installation and use. This not only improves the installation accuracy of the sleeve 200, but also avoids the displacement or loosening of the sleeve 200 caused by high pressure or external interference during use. The presence of the positioning ring 220 not only improves the stability of the system, but also simplifies the installation process, making the installation of the flange 210 in a complex environment more convenient and reliable. In addition, the matching design of the positioning ring 220 and the positioning groove 130 makes the positioning of the sleeve 200 more accurate, especially under dynamic conditions, which can effectively prevent the flange 210 or the sealing gasket 300 from changing position due to pressure fluctuations or vibrations. Through this precise positioning design, the sleeve 200 can still maintain a stable sealing state when subjected to high pressure or other external interference, further improving its reliability.

[0049] Specifically, the ends of the two sets of flanges 210 that are away from each other are respectively provided with a first connection structure, a second connection structure and a third connection structure, wherein: the first connection structure and the second connection structure are respectively spherical ring structures, the middle diameter of the first connection structure is larger than the diameters at both ends of the first connection structure, the middle diameter of the second connection structure is larger than the diameters at both ends of the second connection structure, and the middle diameter of the second connection structure is smaller than or equal to the end diameter of the first connection structure; the third connection structure is a conical ring structure, the diameter of one end of the third connection structure adjacent to the second connection structure is larger than the diameter of one end of the third connection structure away from the second connection structure.

[0050] It is understandable that the third connection structure adopts a tapered annular structure, one end of which has a larger diameter than the other end, forming a gradually shrinking transition. This design not only facilitates quick alignment during installation, simplifies the connection operation of the flange 210, but also provides a firm positioning effect after installation. The transition shape of the tapered structure helps to disperse the pressure layer by layer when the flange 210 is subjected to external force, prevents the structure from loosening or damaging due to stress concentration, and is particularly suitable for environments subjected to high pressure. At the same time, the tapered design enables it to have good self-locking properties, can effectively prevent the flange 210 assembly from loosening under high pressure or vibration conditions, and helps to improve the overall stability of the flange 210 assembly. Secondly, the first and second connection structures adopt a spherical annular design, which respectively presents a structural characteristic that the middle diameter is larger than the diameter at both ends. Such a spherical design forms a natural buffer zone at the connection, which can gradually disperse the stress through the curvature of the spherical surface under strong pressure. The characteristics of this arc transition enable it to withstand and alleviate pressure shocks from all directions, avoiding damage or stress concentration caused by excessive pressure on a single plane or corner. The spherical structure also has a certain degree of angular adaptability, so that the flange 210 can still maintain good sealing performance and structural integrity after being stressed, effectively improving the pressure resistance and safety of the flange 210. In addition, the middle diameter of the second connection structure is less than or equal to the end diameter of the first connection structure. This transition design allows the two sets of flanges 210 to form a smooth step-by-step transition when connected, which helps to further optimize the distribution of force. Through this gradually changing diameter design, the pressure can be more smoothly transferred from the first connection structure to the second and third structures, forming a stable pressure transmission path. This optimized force transmission path can not only improve the durability of the flange 210, but also effectively reduce fatigue loss under long-term use, thereby extending the service life of the entire flange 210. Finally, through the combination of conical and spherical annular structures, this connection design provides a higher adaptability and pressure bearing capacity for the high-pressure self-tightening flange. The conical structure is easy to install and self-lock, while the spherical structure can ensure uniform force and stability of the flange while bearing strong pressure. This multi-stage design is suitable for various industrial applications in high-pressure and high-vibration environments, especially in the fields of petroleum and chemical industry that require high strength and reliable sealing. It can ensure that the flange 210 connection remains stable and sealed under extreme working conditions.

[0051] Specifically, the fastening unit 400 includes: a fastening bolt 410 and a spherical nut 420. One end of the fastening bolt 410 passes through the fastening holes of the two groups of ferrules 110, and the fastening bolt 410 is used to connect the two groups of ferrules 110; two groups of spherical nuts 420 are provided, and the two groups are respectively provided at both ends of the fastening bolt 410, and the spherical nut 420 is threadedly connected with the fastening bolt 410.

[0052] It can be understood that the two sets of ferrules 110 are firmly connected and stably fastened by the cooperation of the fastening bolts 410 and the spherical nuts 420. The fastening bolts 410 pass through the fastening holes of the two sets of ferrules 110, which plays the role of tightly fixing the two sets of ferrules 110 together. The spherical nuts 420 are located at both ends of the fastening bolts 410 and are connected to the bolts through threads, ensuring the uniform distribution of the fastening unit 400 when the fastening force is applied. The design of the spherical nuts 420 can adapt to certain angular deviations. Even if there are slight alignment errors during the installation process, the bolts and nuts can be tightly matched, thereby improving the stability of the connection, preventing loosening, and ensuring the stability of the flange 210 system under high pressure environments.

[0053] Based on the above embodiments, in other embodiments of the present application, the design form of the fastening bolt 410 may include various types such as through holes, threaded holes combined with countersunk holes, etc. Specifically, if a through hole structure is selected, the selection range of the fastening bolt 410 may include full-threaded studs, equal-length and equal-diameter studs, and equal-length and reduced-diameter studs. If a combination design of threaded holes and countersunk holes is adopted, the selection of the fastening bolt 410 is further expanded to full-threaded studs, equal-length and equal-diameter studs, equal-length and reduced-diameter single-rotation studs, and equal-length and reduced-diameter double-rotation studs.

[0054] Specifically, in the application scenarios involving dual-handle studs, it is particularly important to note that the thread hand direction of the two clamps and the stud connection section must be consistent, and at the same time, the thread hand direction of the two nuts and the connection parts at both ends of the stud must also be the same. This design cleverly utilizes the self-locking characteristics of threads with different hand directions, thereby effectively coping with the problem of loose tightening under high-temperature fatigue conditions and high-frequency vibration environments.

[0055] Specifically, in order to further improve the fastening effect and sealing performance, this embodiment also provides a pair of toothed spherical or conical washers at the countersinking of the outer side of the threaded hole. The wedge-shaped structure adopted by these washers also exhibits a strong self-locking property, providing a solid and reliable guarantee for the sealing of the clamp flange.

[0056] In the above-mentioned embodiments, a high-pressure self-tightening flange with a T-shaped pad structure is designed to place a through hole on the base 100 and install the sleeve 200 inside the through hole. This structure ensures high-precision positioning when the flange 210 is installed. The connection between the sleeve 200 and the inner wall of the placement through hole not only enhances the stability of the flange 210, but also improves the overall impact resistance. Since the sleeve 200 is closely matched with the inner wall of the base 100, when subjected to high pressure, the force can be effectively dispersed to avoid local stress concentration, which helps to extend the service life of the flange 210. Secondly, the sealing unit is located inside the sleeve 200 and bears an important sealing function. Since the sealing unit directly acts on the inner cavity of the sleeve 200, it can effectively isolate the high-pressure fluid or gas to avoid leakage problems. The reasonable design and material selection of the sealing unit ensure that it can still maintain a good sealing effect under harsh working conditions such as high temperature and high pressure. This has a very critical safety guarantee role for pipeline systems that require high reliability and pressure resistance. Finally, at least four sets of fastening holes are provided on the upper surface of the card holder 100, which facilitates the installation of the fastening unit 400. The fastening unit 400 can achieve uniform and stable fastening through these fastening holes, avoiding the flange 210 from loosening or uneven force during use. Such a design can further improve the safety and stability of the system, especially in the case of long-term operation or frequent changes in high pressure, and can effectively maintain the stable state of the flange 210 to prevent the risk of accidental falling off or leakage.

[0057] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-pressure self-tightening flange with a T-type gasket structure, characterized in that: It comprises: a card seat, a sleeve, a sealing unit and a fastening unit, wherein a placement through hole is arranged in the middle of one side of the card seat, the sleeve is arranged inside the placement through hole, the sleeve is connected to the inner side wall of the placement through hole, the sealing unit is arranged inside the sleeve, and the sealing unit is used to seal the sleeve; At least four groups of fastening holes are opened on the upper surface of the card base, and the fastening unit is arranged inside the fastening holes, and the fastening unit is used to fasten the card base.

2. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 1, characterized in that: The card holder comprises: The ferrules are provided in two groups, and the two groups of ferrules are arranged correspondingly in the vertical direction, wherein one end of the two groups of ferrules correspondingly arranged is provided with a groove, so that when the two groups of ferrules are connected, the placement through hole is formed between the two groups of grooves; At least four groups of fastening holes are provided, and the four groups of fastening holes are respectively opened at the corners of the end of the ferrule away from the groove; A positioning groove is arranged at the inner bottom of the groove.

3. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 2, characterized in that: A conical lip is arranged at one end of the ferrule away from the fastening hole, and a first angle is arranged between the end surface of the pressure-bearing side of the conical lip and the axis of the sleeve, wherein the conical lip is parallel to the lip of the ferrule.

4. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 2, characterized in that: The planar auxiliary portion of the ferrule is provided with a conical support platform, the semi-cone angle of the conical support platform is greater than 0.2, and the semi-cone angle of the support platform is less than or equal to 1.

5. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 4, characterized in that: The conical support platform and the straight edge of the lip of the ferrule are provided with an arc angle.

6. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 2, characterized in that: The sleeve comprises: The flanges are provided in two groups, and the two groups of flanges are arranged side by side inside the groove along the setting direction of the groove, and the flanges are connected to the inner side wall of the groove.

7. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 6, characterized in that: The sealing unit is a sealing gasket, which is respectively arranged between the two groups of flanges and connected to one side of the two groups of flanges.

8. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 6, characterized in that: The ends of the two sets of flanges that are far away from each other are respectively provided with a first connection structure, a second connection structure and a third connection structure, wherein: The first connection structure and the second connection structure are respectively spherical ring structures, wherein the diameter of the first connection structure in the middle is larger than the diameters of the first connection structure at both ends, the diameter of the second connection structure in the middle is larger than the diameters of the second connection structure at both ends, and the diameter of the second connection structure in the middle is smaller than or equal to the diameter of the first connection structure at the end; The third connection structure is a conical ring structure, and the diameter of one end of the third connection structure adjacent to the second connection structure is larger than the diameter of one end of the third connection structure away from the second connection structure.

9. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 7, characterized in that: A positioning ring is also provided on a side of the flange away from the sealing gasket. The positioning ring is provided corresponding to the positioning groove and is clamped with the flange.

10. The high-pressure self-tightening flange with a T-shaped gasket structure as claimed in claim 2, characterized in that: The fastening unit comprises: A fastening bolt, one end of which passes through the fastening holes of the two groups of ferrules respectively, and the fastening bolt is used to connect the two groups of ferrules; Two groups of spherical nuts are provided, and the two groups are respectively provided at two ends of the fastening bolt, and the spherical nuts are threadedly connected with the fastening bolt.

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