A sealed joint

Abstract

This application relates to a sealing joint, belonging to the technical field of joint structures. It includes a first connecting component, a second connecting component, an outer nut, and a base. The first connecting component has a mounting hole at its first end, and a second conical surface is formed on the inner circumference of the mounting hole. The second connecting component includes an inner core, a first sealing ring, and a second sealing ring. The outer circumference of the first end of the inner core has a third conical surface, and a first mounting portion is circumferentially formed on the third conical surface, with the first sealing ring disposed within the first mounting portion. The outer circumference of the second end of the inner core has a fourth conical surface, and a second mounting portion is circumferentially formed on the fourth conical surface, with the second sealing ring disposed within the second mounting portion. The third conical surface mates with the first conical surface, and the fourth conical surface mates with the second conical surface. The upper end of the outer nut is screwed to the outer circumference of the connecting end of the product joint, and the lower end is connected to the outer circumference of the first end of the first connecting component. The base is detachably connected to the second end of the first connecting component and is connected to the target equipment. This application can reduce the risk of joint damage and improve the high-pressure sealing performance of the sealing joint.

Description

Technical Field

[0001] This application relates to the field of joint structure technology, and in particular to a sealing joint. Background Technology

[0002] In the field of mechanical connections and sealing, joint sealing technology has always been a key factor in ensuring the normal operation and stable performance of equipment. With the continuous development of industry, the requirements for the sealing of connections between various pipelines and equipment are becoming increasingly stringent, especially in high-pressure, high-precision working environments. The reliability of the seal directly affects the safety and operational efficiency of the entire system. Good sealing technology can effectively prevent media leakage, reduce energy consumption, and extend the service life of equipment, which is of great significance for ensuring smooth production and reducing maintenance costs. In many industrial scenarios, such as chemical, petroleum, and aerospace industries, the performance of sealing joints is directly related to production safety and quality.

[0003] Currently, in traditional sealing joint technology, two methods are typically used to achieve sealing for welded joint connections. One method involves using a ball joint and an outer nut. The ball head of the ball joint abuts against the conical surface of the welded joint, and then the outer nut is tightened to achieve a hard metal-to-metal seal. This method utilizes the rigidity and hardness of the metal material, ensuring a certain level of sealing effectiveness. The other common method involves placing a sealing ring between the outer cylinder and the piston. The elastic deformation of the sealing ring fills the gap, achieving a seal. This method is more flexible and can adapt to different sealing requirements and working environments.

[0004] However, the existing hard-seal joints exhibited significant defects during testing before formal use. This hard seal design, with its spherical and conical surface contact, is prone to damage to the sealing surface and threads. Damage to these surfaces and threads not only affects the joint's sealing performance but can also lead to leaks during subsequent use, impacting the normal operation of the entire system. Furthermore, this damage can occur during the testing phase, increasing the product defect rate and maintenance costs. Additionally, the use of a sealing ring between the outer cylinder and the piston creates a gap between them, making it difficult to achieve a high-pressure seal. Utility Model Content

[0005] In order to reduce the risk of joint damage and improve the high-pressure sealing performance of the sealing joint, this application provides a sealing joint.

[0006] This application provides a sealing joint, which adopts the following technical solution: A sealing connector for connecting to a product connector, wherein the connecting end of the product connector has a connecting hole, and the inner circumference of the connecting hole has a first conical surface, the axis of the first conical surface extending from the end face of the connecting end in a direction away from the end face of the connecting end, so that the diameter of the connecting hole gradually decreases from the end face of the connecting end in a direction away from the end face of the connecting end. The sealing connector includes: a first connecting component, the first end of the first connecting component having a mounting hole, the inner circumference of the mounting hole having a second conical surface, the second conical surface causing the mounting hole to gradually decrease in size from the end near the end face of the first connecting component to the end away from the end face of the first connecting component; a second connecting component, the second connecting component including an inner core, a first sealing ring and a second sealing ring, the outer circumference of the first end of the inner core having a third conical surface, the third conical surface having a first mounting portion circumferentially arranged, the first sealing ring being disposed within the first mounting portion, and the second end of the inner core having a third conical surface. The outer periphery is provided with a fourth conical surface, and a second mounting portion is provided around the fourth conical surface. A second sealing ring is disposed within the second mounting portion. A third conical surface is used to mate with the first conical surface, and the fourth conical surface is used to mate with the second conical surface, so that the first sealing ring is sandwiched between the first end of the inner core and the connecting end of the product connector, and the second sealing ring is sandwiched between the second end of the inner core and the first end of the first connecting assembly, so that the first end of the inner core is inserted into the connecting end of the product connector, and the second end of the inner core is inserted into the first end of the first connecting assembly; an outer nut is sleeved on the outer periphery of the first end of the first connecting assembly, and the upper end of the outer nut is screwed to the outer periphery of the connecting end of the product connector, and the lower end of the outer nut is connected to the outer periphery of the first end of the first connecting assembly; a base is detachably connected to the second end of the first connecting assembly, and the base is used to connect to the target device.

[0007] By adopting the above technical solution, a first conical surface is provided on the inner circumference of the connecting hole at the product connector connection end, causing the diameter of the connecting hole to gradually decrease. A second conical surface on the inner circumference of the mounting hole of the first connecting component further reduces the size of the mounting hole. These two features provide a structural basis for subsequent sealing. The third conical surface on the outer circumference of the first end of the inner core mates with the first conical surface to achieve a seal, and the fourth conical surface on the outer circumference of the second end mates with the second conical surface to achieve a seal. During mating, the first sealing ring is sandwiched between the first end of the inner core and the connecting end of the product connector, and the second sealing ring is sandwiched between the second end of the inner core and the first end of the first connecting component, forming a double seal. This combination of soft and hard seals effectively cuts off the channel for the sealing ring to be squeezed out under high pressure, reducing the risk of connector damage and improving sealing performance. Therefore, it is suitable for high-pressure environments of 0-100MPa with stable performance. An outer nut is fitted onto the outer circumference of the first end of the first connecting component. Its upper end is screwed to the outer circumference of the connecting end of the product connector, and its lower end is connected to the outer circumference of the first end of the first connecting component, serving to fix and connect the various components and ensure the stability of the sealing structure. The base is detachably connected to the second end of the first connecting assembly and used to connect to the target device, facilitating connection with different target devices and improving the versatility and applicability of the sealing connector. The replaceable inner core further enhances the flexibility of the sealing connector, improves the assembly efficiency of connectors used for testing, increases test pressure, and reduces damage to the test connector.

[0008] Optionally, the first connection assembly includes a universal connector and an adapter, a first end of the universal connector having the mounting hole, a second end of the universal connector being connected to the first end of the adapter, and the second end of the adapter being screwed to the base.

[0009] By adopting the above technical solution, the first connecting assembly includes a universal head and an adapter. The mounting hole at the first end of the universal head provides installation space for components such as the inner core. Its second conical surface can mate with the fourth conical surface at the second end of the inner core to achieve a sealed connection. The second end of the universal head connects to the first end of the adapter, ensuring the integrity and stability of the connecting assembly. The second end of the adapter is screwed to a base, which facilitates the installation and disassembly of the first connecting assembly and the base, while also achieving a sealed connection between the two. This structural combination makes the sealed joint more stable and reliable when connecting product connectors and target equipment, which is beneficial to improving connector assembly efficiency and increasing test pressure.

[0010] Optionally, the first end of the universal head has a first boss on its outer circumference, and the lower end of the outer nut has a second boss on its inner circumference. The second boss is located on the side of the first boss away from the product connector, and the outer diameter of the first boss is larger than the inner diameter of the second boss, so that the second boss can engage with the first boss, so that the outer nut is fitted onto the outer circumference of the universal head.

[0011] By adopting the above technical solution, the first boss on the outer periphery of the first end of the universal head cooperates with the second boss on the inner periphery of the lower end of the outer sleeve nut. The second boss is located on the side of the first boss away from the product joint, and the outer diameter of the first boss is larger than the inner diameter of the second boss, so that the second boss can be engaged with the first boss. This engagement structure can ensure that the outer sleeve nut is securely fitted on the outer periphery of the universal head, preventing the outer sleeve nut from falling off during use, ensuring the stability of the overall structure of the sealing joint, and thus helping to maintain the sealing performance of the sealing joint.

[0012] Optionally, the inner core is provided with a third protrusion. Along the axial direction of the inner core, the third protrusion is located between the third conical surface and the fourth conical surface. The lower end of the third protrusion is used to engage with the first end of the universal head, and the upper end of the third protrusion is used to engage with the connecting end face of the product connector.

[0013] By adopting the above technical solution, a third boss is set in the inner core and positioned between the third and fourth conical surfaces. The lower end of the third boss is engaged with the first end of the universal head, which can limit the position of the inner core in the direction of the universal head. The upper end of the third boss is engaged with the connecting end face of the product connector, which can limit the position of the inner core in the direction of the product connector. This ensures that the inner core maintains a stable installation position in the sealing connector, guarantees the stability and reliability of the sealing structure, helps to improve the sealing effect, reduces the risk of sealing leakage, and improves the installation efficiency and test pressure of the connector.

[0014] Optionally, the maximum outer diameter of the adapter is greater than the maximum outer diameter of the universal head, and the maximum outer diameter of the adapter is greater than the maximum inner diameter of the outer nut.

[0015] By adopting the above technical solution, the maximum outer diameter of the adapter is greater than the maximum outer diameter of the universal head, which can provide effective support and positioning for the universal head in the connection structure and ensure the stability of the structure. The maximum outer diameter of the adapter is greater than the maximum inner diameter of the outer nut, which can prevent the outer nut from moving excessively or coming off during assembly. At the same time, it provides clear boundaries and restrictions for the installation of the outer nut, ensuring that each component is installed in place and ensuring the stability and reliability of the overall structure of the sealing joint.

[0016] Optionally, the second end of the adapter has a fifth conical surface, a third mounting portion, and a third sealing ring on its outer periphery. The third mounting portion is located on the side of the fifth conical surface away from the universal head, and the third sealing ring is located inside the third mounting portion. The first mounting opening of the base has a sixth conical surface and a fourth mounting portion on its inner periphery. The fourth mounting portion is located on the side of the sixth conical surface close to the end face of the first mounting opening. The fifth conical surface is used to mate with the sixth conical surface, and the third mounting portion mates with the fourth mounting portion to clamp the third sealing ring between the outer periphery of the second end of the adapter and the inner periphery of the first mounting opening of the base.

[0017] By adopting the above technical solution, the fifth conical surface on the outer periphery of the second end of the adapter mates with the sixth conical surface on the inner periphery of the first mounting port of the base, achieving a hard contact seal while increasing the contact area. The third mounting part is located on the side of the fifth conical surface away from the universal head, and the fourth mounting part is located on the side of the sixth conical surface close to the end face of the first mounting port. The two parts work together to clamp the third sealing ring between the outer periphery of the second end of the adapter and the inner periphery of the first mounting port of the base, forming a soft seal. The combination of soft and hard seals cuts off the channel for the third sealing ring to be squeezed out under high pressure, effectively avoiding gaps between the metal mating surfaces caused by machining tolerances. This prevents the third sealing ring from being torn under high pressure, thus improving the sealing performance of the connection between the adapter and the base. This makes the sealing structure suitable for high-pressure environments, achieving good sealing even under 100MPa high pressure.

[0018] Optionally, the second end of the universal head is welded to the first end of the adapter.

[0019] By adopting the above technical solution, the universal head and the adapter are welded together, which can make the connection between the two stable, ensure the stability of the first connection component structure, and thus ensure the stability of the overall structure of the sealing joint. This helps to improve the sealing performance, provides a stable foundation for subsequent cooperation with the base, inner core and other components, so as to achieve better sealing effect, improve the installation efficiency of the joint, increase the test pressure and reduce damage to the joint.

[0020] Optionally, both the inner core and the outer nut are made of copper.

[0021] By adopting the above technical solution, the inner core and outer nut are made of copper. Due to the good flexibility and corrosion resistance of copper, when the inner core is connected to the product connector, the outer nut is connected to the product connector and the first connecting component, the copper inner core and outer nut can better fit the contact surface, reduce wear caused by rigid contact, reduce damage to the product connector during testing, improve connector installation efficiency, ensure tightness of connection, further improve sealing effect, and help increase test pressure.

[0022] Optionally, the universal head and the adapter are made of stainless steel round bars.

[0023] By adopting the above technical solution, the universal head and adapter are made of stainless steel round bars, which possess excellent strength and corrosion resistance. As part of the sealing joint, the universal head's strength ensures it is not easily deformed during connection and use with other components, guaranteeing connection stability and sealing performance. Its corrosion resistance prevents corrosion in various working environments, extending its service life. The adapter connects the universal head and base, among other components. The high strength of the stainless steel round bars can withstand stress and pressure during the connection process, ensuring connection reliability. Its corrosion resistance allows it to adapt to different working media and environments, preventing corrosion from affecting sealing performance and the stability of the overall structure, thus ensuring the normal operation and long-term use of the entire sealing joint.

[0024] Optionally, the second mounting port of the base is screwed to the outer periphery of the target device, and both the base and the target device are made of steel.

[0025] By adopting the above technical solution, both the base and the target equipment are made of steel, which has high strength and good wear resistance, ensuring the stability of the structure under high-pressure testing conditions. The second mounting port of the base is screwed to the outer periphery of the target equipment. This connection method facilitates installation and disassembly, and enables a reliable connection between the base and the target equipment, thereby stably realizing the input of the pressure source.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. Using copper material at the contact point between the sealing joint and the product joint can reduce damage to the product; 2. The inner core of the sealing joint is provided with a conical surface and a grooved mounting part is provided on the conical surface. The sealing ring is installed by the groove, which can form a double seal. The combination of soft and hard seals helps to close the high pressure escape space of the sealing ring, improves the sealing pressure, and is suitable for high pressure environments of 0-100MPa with stable performance. 3. It solves the problem that the original hard-seal joint is prone to damage to the sealing surface and threads during testing, reduces damage to the joint, improves the joint assembly efficiency, and increases the test pressure. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the assembly of the sealing joint and the product joint according to an embodiment of this application.

[0028] Figure 2 This is a cross-sectional view of the assembly of the sealing joint and the product joint according to an embodiment of this application.

[0029] Figure 3 This is a cross-sectional view of the sealing joint according to an embodiment of this application.

[0030] Figure 4 This is a cross-sectional view of the outer nut, the first connecting component, and the second connecting component after assembly according to an embodiment of this application.

[0031] Figure 5 This is a cross-sectional view of the inner core of an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures: 100. Product connector; 110. Connecting hole; 120. First conical surface; 1. First connecting assembly; 11. Universal head; 111. Mounting hole; 112. Second conical surface; 113. First boss; 12. Adapter; 121. Fifth conical surface; 122. Third mounting part; 13. Third sealing ring; 2. Second connecting component; 21. Inner core; 211. Third conical surface; 212. First mounting part; 213. Fourth conical surface; 214. Second mounting part; 215. Third boss; 22. First sealing ring; 23. Second sealing ring; 3. Outer nut; 31. Second boss; 4. Base; 41. First mounting port; 411. Sixth conical surface; 412. Fourth mounting part; 42. Second mounting port; 5. Target equipment. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be further described in detail below. In this embodiment, unless otherwise specified, "connection", "linking", and "fixing" are interpreted broadly, including fixed connection, detachable connection, connection to form an integral structure, mechanical connection, electrical connection, direct connection, indirect connection through an intermediary, internal connection, and interaction between two components, etc., and can be understood according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, in the description of this embodiment, terms such as "above," "below," "left," and "right," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are used only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise stated, directional terms such as "inner" and "outer" used in this application refer to the outline of the corresponding component itself.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown in the illustration, this application discloses a sealing connector. The sealing connector provided in this application is used to connect with a product connector 100. The connecting end of the product connector 100 has a connecting hole 110, and the inner circumference of the connecting hole 110 has a first conical surface 120. The axis of the first conical surface 120 extends from the end face of the connecting end in a direction away from the end face of the connecting end, causing the diameter of the connecting hole 110 to gradually decrease from the end face of the connecting end in a direction away from the end face of the connecting end. The sealing connector includes a first connecting component 1, a second connecting component 2, an outer nut 3, and a base 4.

[0036] In this design, the first connecting component 1 and the second connecting component 2 are interlocked via a conical surface and a sealing ring. An outer nut 3 is fitted around the outer periphery of the first connecting component 1 and screwed onto the product connector 100. The base 4 is detachably connected to the first connecting component 1. This structural design ensures a tight connection between all parts of the sealing connector. The combination of a hard seal from the conical surface and a soft seal from the sealing ring effectively improves sealing performance and reduces damage to the connector. The product connector 100 can be installed on products of any structure to achieve connection.

[0037] like Figure 3 , Figure 4 and Figure 5 As shown, specifically, the first connecting assembly 1 includes a universal head 11 and an adapter 12. The first end of the universal head 11 has a mounting hole 111, and the inner circumference of the mounting hole 111 has a second conical surface 112. The second conical surface 112 causes the mounting hole 111 to gradually narrow from the end near the first end face of the first connecting assembly 1 to the end away from the first end face of the first connecting assembly 1. The universal head 11 is generally made of stainless steel round steel, which is high in strength and corrosion resistant. The outer circumference of the first end of the universal head 11 has a first boss 113, which can be integrally formed on the outer circumference of the universal head 11 and its function is to cooperate with the outer nut 3. The second end of the universal head 11 is used to connect to the first end of the adapter 12. This connection can be made by welding, such as argon arc welding. The weld is uniform and strong, effectively preventing media leakage. The welded connection ensures the strength and sealing of the connection. The second end of the adapter 12 is screwed to the base 4. The maximum outer diameter of the adapter 12 is larger than the maximum outer diameter of the universal head 11 and also larger than the maximum inner diameter of the outer nut 3. This size setting allows the adapter 12 to play a role in limiting and stabilizing the connection in terms of structure, and it is suitable for connecting structures with different sizes at both ends. The adapter 12 can also be made of stainless steel round steel to meet the strength requirements.

[0038] like Figure 2 , Figure 3 and Figure 4As shown, the outer nut 3 is fitted onto the outer periphery of the first end of the universal head 11. The upper end of the outer nut 3 is screwed onto the outer periphery of the connecting end of the product connector 100. The lower inner periphery of the outer nut 3 is provided with a second boss 31. The second boss 31 is located on the side of the first boss 113 away from the product connector 100, and the outer diameter of the first boss 113 is larger than the inner diameter of the second boss 31, so that the second boss 31 can engage with the first boss 113. In this way, the outer nut 3 can be stably fitted onto the outer periphery of the universal head 11, serving to connect the product connector 100 and the first connecting assembly 1. This improves the installation efficiency of the sealing joint.

[0039] like Figure 3 , Figure 4 and Figure 5 As shown, the second connecting assembly 2 includes an inner core 21, a first sealing ring 22, and a second sealing ring 23. The outer periphery of the first end of the inner core 21 is provided with a third conical surface 211, and a first mounting portion 212 is provided around the third conical surface 211. The first mounting portion 212 can be an annular groove, and the first sealing ring 22 is fitted inside the first mounting portion 212. The outer periphery of the second end of the inner core 21 is provided with a fourth conical surface 213, and a second mounting portion 214 is provided around the fourth conical surface 213. The second mounting portion 214 can also be an annular groove, and the second sealing ring 23 is fitted inside the second mounting portion 214.

[0040] like Figure 2 , Figure 4 and Figure 5 As shown, the inner core 21 has a third boss 215. Along the axial direction of the inner core 21, the third boss 215 is located between the third conical surface 211 and the fourth conical surface 213. The lower end of the third boss 215 is used to abut and engage with the first end of the universal head 11, and the upper end of the third boss 215 is used to abut and engage with the connecting end face of the product connector 100. This arrangement ensures that the inner core 21 is stable after installation. Both the inner core 21 and the outer nut 3 are made of copper. Copper is relatively soft and can reduce damage to the product connector 100. The first sealing ring 22 and the second sealing ring 23 are generally made of rubber, which can further improve the sealing performance based on the conical surface fit. When the inner core 21 is installed, it is inserted into the product connector 100 and the first connecting assembly 1 respectively. The third conical surface 211 mates with the first conical surface 120 in the connecting hole 110 of the product connector 100, and the fourth conical surface 213 mates with the second conical surface 112 in the mounting hole 111 of the universal head 11. This causes the first sealing ring 22 to be sandwiched between the first end of the inner core 21 and the connecting end of the product connector 100, and the second sealing ring 23 to be sandwiched between the second end of the inner core 21 and the first end of the first connecting assembly 1, achieving double sealing and a combination of soft and hard seals. This effectively cuts off the channel through which the sealing ring is squeezed out due to high pressure, thereby allowing it to withstand higher pressure, which helps to increase the test pressure and reduce damage to the sealing joint.

[0041] like Figure 3 , Figure 4 and Figure 5 As shown, the second end of the adapter 12 has a fifth conical surface 121, a third mounting portion 122, and a third sealing ring 13 on its outer periphery. The third mounting portion 122 is located on the side of the fifth conical surface 121 away from the universal head 11. The third mounting portion 122 can be an annular groove for mounting the third sealing ring 13. The third sealing ring 13 is generally made of rubber, which has good elasticity and sealing performance. This sealing connector, by adopting a combination of a conical surface hard seal and a sealing ring, and a replaceable inner core 21, can improve the connector installation efficiency, increase the test pressure, and reduce connector damage.

[0042] like Figure 2 , Figure 3 and Figure 4 As shown, the base 4 is detachably connected to the second end of the adapter 12, and the connection between the two can be screwed together. The base 4 is used to connect the target device 5. This structure reduces the need to replace the base 4. When replacement is required, the inner core 21, outer nut 3, and first connecting assembly 1 can be replaced, reducing costs. The first mounting port 41 of the base 4 has a sixth conical surface 411 and a fourth mounting part 412 on its inner circumference. The fourth mounting part 412 is located on the side of the sixth conical surface 411 near the end face of the first mounting port 41. The fifth conical surface 121 of the adapter 12 is used to mate with the sixth conical surface 411 of the base 4. The third mounting part 122 mates with the fourth mounting part 412 to clamp the third sealing ring 13 between the outer circumference of the second end of the adapter 12 and the inner circumference of the first mounting port 41 of the base 4, achieving a seal. The second mounting port 42 of the base 4 is screwed to the outer circumference of the target device 5, and can then be welded. Both the base 4 and the target device 5 are made of steel, which has high strength and can withstand greater pressure. Target device 5 is used to connect to an air intake source. A gas channel is provided within the sealing joint to allow gas to flow from target device 5 to product connector 100, meeting testing and usage requirements. The sealing ring in this embodiment can be selected according to appropriate needs, such as an O-ring. The fit between the fifth conical surface 121 and the sixth conical surface 411 helps reduce the fit clearance. The conical surfaces achieve compression, thereby sealing the high-pressure escape space of the third sealing ring 13, reducing the risk of the third sealing ring 13 being squeezed out or torn from the gap. This not only protects the sealing joint structure but also achieves high-pressure sealing and optimizes performance. Simultaneously, the contact between the two conical surfaces increases the contact area and reduces the risk of damage. It is understood that the conical surfaces and sealing rings at different positions of the sealing joint all have this effect. The specific shape and size of the conical surfaces of the sealing joint can be set as needed.

[0043] It is understandable that the sealing joint also includes necessary structures for connection, support, positioning and limiting functions, so that the sealing joint can operate normally; the specific shape, size, material and quantity of each part of the sealing joint can be determined as needed, as long as the corresponding functions can be achieved.

[0044] The implementation principle of this embodiment is as follows: This sealing joint effectively improves sealing performance by combining a conical surface hard seal with a sealing ring soft seal. The replaceable design of the inner core 21 allows the sealing joint to adapt to different product joints 100, improving the efficiency of joint testing. Under high pressure, the hard-contact conical surface cuts off the channel through which the sealing ring is squeezed out under high pressure, avoiding tearing and leakage problems caused by excessive pressure when relying solely on the sealing ring for sealing. It can stably adapt to high pressure environments of 0-100MPa. At the same time, the inner core 21 and the outer nut 3 are made of copper, reducing damage to the product joint 100, increasing the product's service life, and reducing maintenance costs.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sealing joint, characterized in that, For connection with a product connector (100), the connecting end of the product connector (100) is provided with a connecting hole (110), the inner circumference of the connecting hole (110) is provided with a first conical surface (120), the axis of the first conical surface (120) extends from the end face of the connecting end in a direction away from the end face of the connecting end, so that the diameter of the connecting hole (110) gradually decreases from the end face of the connecting end in a direction away from the end face of the connecting end, the sealing connector includes: A first connecting component (1) is provided with a mounting hole (111) at its first end. The inner circumference of the mounting hole (111) is provided with a second conical surface (112). The second conical surface (112) causes the mounting hole (111) to gradually shrink from one end close to the first end face of the first connecting component (1) to one end far away from the first end face of the first connecting component (1). The second connecting component (2) includes an inner core (21), a first sealing ring (22), and a second sealing ring (23). The inner core (21) has a third conical surface (211) on its outer periphery at its first end. A first mounting portion (212) is circumferentially arranged on the third conical surface (211), and the first sealing ring (22) is disposed within the first mounting portion (212). The inner core (21) has a fourth conical surface (213) on its outer periphery at its second end. A second mounting portion (214) is circumferentially arranged on the fourth conical surface (213), and the second sealing ring (23) is disposed within the second mounting portion (214). The third conical surface (211) is used to mate with the first conical surface (120), and the fourth conical surface (213) is used to mate with the second conical surface (112), so that the first sealing ring (22) is sandwiched between the first end of the inner core (21) and the connecting end of the product connector (100), and the second sealing ring (23) is sandwiched between the second end of the inner core (21) and the first end of the first connecting assembly (1), so that the first end of the inner core (21) is inserted into the connecting end of the product connector (100), and the second end of the inner core (21) is inserted into the first end of the first connecting assembly (1); Outer nut (3), the outer nut (3) is sleeved on the outer periphery of the first end of the first connecting component (1), and the upper end of the outer nut (3) is screwed to the outer periphery of the connecting end of the product connector (100), and the lower end of the outer nut (3) is connected to the outer periphery of the first end of the first connecting component (1); The base (4) is detachably connected to the second end of the first connecting component (1) and is used to connect the target device (5).

2. The sealing joint according to claim 1, characterized in that, The first connecting component (1) includes a universal head (11) and an adapter (12). The first end of the universal head (11) is provided with the mounting hole (111). The second end of the universal head (11) is connected to the first end of the adapter (12). The second end of the adapter (12) is screwed to the base (4).

3. The sealing joint according to claim 2, characterized in that, The first end of the universal head (11) is provided with a first boss (113) on its outer periphery, and the lower end of the outer nut (3) is provided with a second boss (31) on its inner periphery. The second boss (31) is located on the side of the first boss (113) away from the product connector (100), and the outer diameter of the first boss (113) is larger than the inner diameter of the second boss (31), so that the second boss (31) can engage with the first boss (113) so that the outer nut (3) is fitted onto the outer periphery of the universal head (11).

4. The sealing joint according to claim 3, characterized in that, The inner core (21) is provided with a third boss (215). Along the axial direction of the inner core (21), the third boss (215) is located between the third conical surface (211) and the fourth conical surface (213). The lower end of the third boss (215) is used to engage with the first end of the universal head (11), and the upper end of the third boss (215) is used to engage with the connecting end face of the product connector (100).

5. The sealing joint according to claim 2, characterized in that, The maximum outer diameter of the adapter (12) is greater than the maximum outer diameter of the universal head (11), and the maximum outer diameter of the adapter (12) is greater than the maximum inner diameter of the outer nut (3).

6. The sealing joint according to claim 2, characterized in that, The second end of the adapter (12) is provided with a fifth conical surface (121), a third mounting part (122) and a third sealing ring (13) on its outer periphery. The third mounting part (122) is located on the side of the fifth conical surface (121) away from the universal head (11). The third sealing ring (13) is located inside the third mounting part (122). The first mounting port (41) of the base (4) is provided with a sixth conical surface (411) and a fourth mounting part (412) on its inner periphery. The fourth mounting part (412) is located on the side of the sixth conical surface (411) close to the end face of the first mounting port (41). The fifth conical surface (121) is used to cooperate with the sixth conical surface (411). The third mounting part (122) cooperates with the fourth mounting part (412) to clamp the third sealing ring (13) between the outer periphery of the second end of the adapter (12) and the inner periphery of the first mounting port (41) of the base (4).

7. The sealing joint according to claim 2, characterized in that, The second end of the universal head (11) is welded to the first end of the adapter (12).

8. The sealing joint according to claim 1, characterized in that, The inner core (21) and the outer nut (3) are both made of copper.

9. The sealing joint according to claim 2, characterized in that, The universal head (11) and the adapter (12) are made of stainless steel round steel.

10. The sealing joint according to claim 2, characterized in that, The second mounting port (42) of the base (4) is screwed to the outer periphery of the target device (5), and both the base (4) and the target device (5) are made of steel.

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