Sealing joint test system and test method

Abstract

The invention provides a sealing joint test system and test method. The sealing joint test system comprises a test platform, a first fixing mechanism, a second fixing mechanism, a first load applying mechanism, a second load applying mechanism, a pressure test mechanism and a heating temperature control mechanism. The first load applying mechanism is used for applying an axial load to the sealing joint; the second load mechanism is used for applying a bending moment load to the sealing joint; the pressure testing mechanism is used for applying pressure to the sealing joint; and the heating temperature control mechanism is used for heating the sealing joint to a preset temperature and keeping the temperature of the sealing joint unchanged. According to the sealing joint test system provided by the invention, the first load applying mechanism, the second load applying mechanism, the pressure test mechanism and the heating temperature control mechanism are arranged to test the sealing joint in the environments of axial load, bending moment load, ultrahigh pressure and high temperature, so that the sealing performance of the sealing joint is ensured.

Description

Technical Field

[0001] This application relates to the chemical industry, and in particular to a sealing joint testing system and testing method. Background Technology

[0002] Ultra-high pressure tubular reactors are core and key equipment in high-end industrial and scientific research fields. They can operate stably under extreme pressure and high temperature conditions of over 100 MPa. Therefore, they are widely used in the polymerization processes of ethylene and ethylene copolymers in the chemical and energy fields. They can produce high-performance materials such as high molecular weight polyethylene or polyethylene copolymers that can be used in aerospace, packaging, pipelines and other fields, and play an important supporting role in the development of related high-end industries.

[0003] Because ultra-high pressure tubular reactors operate under harsh conditions of high pressure, high temperature, alternating loads, and corrosive media, the sealing performance of the sealing joints in ultra-high pressure tubular reactors is subject to extremely high requirements. The assembly accuracy of the sealing joints directly affects their sealing performance. Once the sealing joint fails, it will lead to serious production safety and process accidents.

[0004] However, in the existing technology system, there is a lack of a dedicated test platform for verifying the sealing performance of sealing joints in ultra-high pressure tubular reactors. This platform can simulate ultra-high pressure, high temperature, axial load, bending moment load, and the above loads independently or in combination. At the same time, there is no corresponding standardized verification method. It is impossible to comprehensively and accurately verify the sealing performance and stability of sealing joints under the above complex working conditions. It is also difficult to identify potential failure risks of sealing joints under actual service conditions in advance, which poses a technical hazard to the safe operation of ultra-high pressure tubular reactors. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a sealing joint testing system and testing method that can test the sealing performance of sealing joints under complex working conditions.

[0006] To achieve the above objectives, this application provides a sealing joint testing system and method, comprising: Test platform; A first fixing mechanism is provided on the test platform and is used to connect to one end of the sealing joint; The second fixing mechanism is set on the test platform and is used to connect to the other end opposite to the sealing joint, thereby cooperating with the first fixing mechanism to fix the sealing joint. The first load application mechanism is set on the test platform to apply an axial load to the sealing joint; The second load application mechanism is set on the test platform to apply bending moment load to the sealing joint; A pressure testing mechanism, used to connect to a sealing joint to apply pressure to the sealing joint; The heating and temperature control mechanism is used to heat the sealing joint to a predetermined temperature and maintain the sealing joint temperature constant.

[0007] Furthermore, the first fixing mechanism includes a first pressure cap, a first base, and a first limiting ring; along a direction perpendicular to the plane of the test platform, the lower end of the first base is fixed to the test platform, the first pressure cap is disposed at the upper end of the first base and connected to the first base; a first accommodating space communicating with the outside is provided between the first pressure cap and the first base, the first accommodating space being used to accommodate one end of the sealing joint; the first base and the first pressure cap are provided with a first groove for accommodating the first limiting ring, the first groove being disposed on the side wall of the first base and the first pressure cap located within the first accommodating space, and the first limiting ring being sleeved on the end of the sealing joint located within the first accommodating space and disposed within the first groove; The pressure testing mechanism includes a pressurizing component, a high-pressure detection component, and a high-pressure connector. The pressurizing component is connected to one end of the sealing joint through the high-pressure connector and is used to inject liquid and pressurize the sealing joint. The high-pressure detection component is used to detect the pressure of the sealing joint.

[0008] Furthermore, along a direction perpendicular to the plane of the test platform, the first pressure cap has an opening that penetrates the first pressure cap and connects to the first accommodating space. One end of the high-pressure pipe passes through the opening into the first accommodating space and connects to the sealing joint, while the other end connects to the pressurizing component.

[0009] Furthermore, the second fixing mechanism includes a second pressure cap, a second base, and a second limiting ring; along a direction perpendicular to the plane of the test platform, the second load applying mechanism is disposed below the second base and fixed to the test platform; A second receiving space communicating with the outside is provided between the second pressure cap and the second base. The second receiving space is used to receive one end of the sealing joint. The second base and the second pressure cap are provided with a second groove for receiving the second limiting ring. The second groove is provided on the side wall of the second base and the second pressure cap located in the second receiving space. The second limiting ring is sleeved on one end of the sealing joint located in the second receiving space and is provided in the second groove.

[0010] Furthermore, the first load application mechanism includes a drive assembly, a pull head, and an extension mechanism; one end of the pull head is located within the second accommodating space and connected to one end of the sealing joint; the extension mechanism is connected to the other end of the pull head, and the drive assembly is disposed within the extension mechanism for applying an axial load to the sealing joint through the pull head.

[0011] Furthermore, the extension mechanism includes a C-shaped plate, an end plate, and a baffle; at least four C-shaped plates are provided; the baffle is fixed to the test platform, and the baffle has through holes penetrating the baffle, the number of through holes corresponding to the number of C-shaped plates, one end of the C-shaped plate passes through the through hole and is fixed to the pulling head, and the opposite end is connected to the four C-shaped plates through the end plate to form a space for accommodating the driving assembly; the driving assembly is disposed within the space enclosed by the C-shaped plates, and one end of the driving assembly is connected to the end plate, and the other end is connected to the baffle.

[0012] Furthermore, it also includes a monitoring mechanism for monitoring the sealing joint throughout the testing process using the sealing joint testing system.

[0013] This application also provides a sealing joint testing method, applied to the above-mentioned sealing joint testing system, comprising: The sealing joint is fixed by the first fixing mechanism and the second fixing mechanism; The pressure testing mechanism applies pressure to the sealing joint to a preset pressure and maintains it for a preset time. Observe whether the sealing joint leaks, is abnormally deformed, or makes abnormal noises; Gradually depressurize the sealing joint.

[0014] Furthermore, the step of applying pressure to the sealing joint to a preset pressure through the pressurizing component and maintaining it for a preset time also includes: A preset bending moment load is applied to the sealing joint by the second load application mechanism; And / or, a preset axial load is applied to the sealing joint by the first load application mechanism; The gradual depressurization of the sealing joint also includes: Bending moment unloading is applied to the sealing joint; And / or, axial force unloading of the sealing joint.

[0015] Furthermore, the step of applying pressure to the sealing joint to a preset pressure through the pressurizing component and maintaining it for a preset time also includes: The sealing joint is heated to a preset temperature by the heating and temperature control mechanism. The gradual depressurization of the sealing joint also includes: The sealing joint is cooled to room temperature by the heating and temperature control mechanism.

[0016] Compared with the prior art, the sealing joint testing system provided in this application enables the sealing joint to be tested under axial load, bending moment load, ultra-high pressure and high temperature environments by setting a first load application mechanism, a second load application mechanism, a pressure testing mechanism and a heating and temperature control mechanism, thereby ensuring the sealing performance of the sealing joint. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the sealing joint testing system provided in the embodiments of this application; Figure 2 This is a partial structural schematic diagram of the sealing joint testing system provided in the embodiments of this application; Figure 3 for Figure 2 A partial structural schematic diagram of the sealing joint testing system in another embodiment; Figure 4 for Figure 2 A cross-sectional view of the first fixing mechanism and the sealing joint; Figure 5 for Figure 4 A cross-sectional view of the first fixed mechanism; Figure 6 A schematic diagram of the first fixing mechanism provided for the implementation of this application; Figure 7 for Figure 6 A structural diagram from another perspective; Figure 8 A schematic diagram of the structure of the first base provided in an embodiment of this application; Figure 9 for Figure 2 A cross-sectional view of the second fixing mechanism and the sealing joint; Figure 10 A schematic diagram of the structure of the second fixing mechanism provided in the embodiments of this application; Figure 11 This is a schematic diagram of the structure of the first load application mechanism provided in an embodiment of this application; Figure 12 for Figure 11 Schematic diagram of the structure of the drawing head; Figure 13 for Figure 11Schematic diagram of the middle baffle; Figure 14 for Figure 11 Schematic diagram of the structure of the C-shaped plate and the end plate; Figure 15 A flowchart of the sealing joint test method provided in the embodiments of this application; Figure 16 A flowchart of a sealing joint test method provided in another embodiment of this application.

[0019] Figure Labels 100. Sealing joint testing system; 200. Sealed joint; 10. Test platform; 101. Base; 102. Protrusion; 11. Lower seat; 12. Support frame; 13. Upper seat; 20. First fixing mechanism; 201. First receiving space; 21. First pressure cover; 211. Opening; 22. First base; 221. Lower end; 222. Upper end; 223. Connecting part; 224. Fixing hole; 23. First limiting ring; 24. First groove; 30. Second fixing mechanism; 301. Second receiving space; 31. Second pressure cover; 32. Second base; 33. Second limiting ring; 34. Second groove; 35. Third groove; 40. First load application mechanism; 41. Drive assembly; 411. First load application component; 412. First load measuring component; 42. Pulling head; 421. Main body; 422. Neck; 423. Head; 43. Extension mechanism; 431. C-shaped plate; 432. End plate; 433. Baffle; 4330. Through hole; 50. Second load application mechanism; 51. Second load application component; 52. Second load measuring component; 60. Pressure testing mechanism; 61. Pressurization assembly; 62. High-pressure detection assembly; 63. High-pressure connection pipe; 70. Heating and temperature control mechanism; 80. Monitoring agencies. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Please refer to Figures 1 to 14 As shown, this application provides a sealing joint testing system 100.

[0023] Here, the direction perpendicular to the plane where the test platform 10 is located is defined as direction Z.

[0024] The sealing joint testing system 100 includes: a test platform 10, a first fixing mechanism 20, a second fixing mechanism 30, a first load application mechanism 40, a second load application mechanism 50, a pressure testing mechanism 60, and a heating and temperature control mechanism 70.

[0025] The first fixing mechanism 20 is disposed on the test platform 10 and is used to connect to one end of the sealing joint 200. The second fixing mechanism 30 is disposed on the test platform 10 and is used to connect to the other end of the sealing joint 200, thereby cooperating with the first fixing mechanism 20 to fix the sealing joint 200.

[0026] A first load application mechanism 40 is disposed on the test platform 10 and applies an axial load to the sealing joint 200. A second load application mechanism 50 is disposed on the test platform 10 and applies a bending moment load to the sealing joint 200. A pressure testing mechanism 60 is used to connect to the sealing joint 200 to apply pressure to the sealing joint 200. A heating and temperature control mechanism 70 is used to heat the sealing joint 200 to a predetermined temperature and maintain the temperature of the sealing joint 200 constant.

[0027] The sealing joint testing system 100 provided in this application enables the sealing joint 200 to be tested under axial load, bending moment load, ultra-high pressure and high temperature environments by setting a first load application mechanism 40, a second load application mechanism 50, a pressure testing mechanism 60 and a heating and temperature control mechanism 70, thereby ensuring the sealing performance of the sealing joint 200.

[0028] In some implementation methods, please refer to Figure 1 and Figure 2 As shown, the test platform 10 includes a lower base 11, a support frame 12, and an upper base 13. Along the Z direction, the upper base 13 is located above the lower base 11. The two ends of the support frame 12 are connected to the upper surface of the lower base 11 and the lower surface of the upper base 13, respectively. A space is formed between the lower base 11, the support frame 12, and the upper base 13 to accommodate the first fixing mechanism 20, the second fixing mechanism 30, the first load applying mechanism 40, and the second load applying mechanism 50. All three mechanisms are fixed to the lower base 11. Two support frames 12 are provided, along the Y direction, respectively positioned on both sides of the integral structure formed by the first fixing mechanism 20, the second fixing mechanism 30, the first load applying mechanism 40, and the second load applying mechanism 50.

[0029] The sealing joint testing system 100 provided in this application improves the stability of the structure formed by the lower seat 11, the support frame 12 and the upper seat 13 by setting up a lower seat 11, a support frame 12 and an upper seat 13, with the two ends of the support frame 12 connected to the lower seat 11 and the upper seat 13 respectively.

[0030] In some implementation methods, please refer to Figure 3 As shown, the test platform 10 may also consist of only a base 101, and this application does not impose any restrictions on this.

[0031] In some implementation methods, please refer to Figure 1 , Figure 2 and Figures 4 to 7 As shown, the first fixing mechanism 20 includes a first pressure cap 21, a first base 22, and a first limiting ring 23. Along direction Z, the lower end of the first base 22 is fixed to the test platform 10, and the first pressure cap 21 is disposed on the upper end of the first base 22 and connected to it. A first receiving space 201 communicating with the outside is provided between the first pressure cap 21 and the first base 22, and the first receiving space 201 is used to receive one end of the sealing joint 200. The first base 22 and the first pressure cap 21 are provided with a first groove 24 for receiving the first limiting ring 23. The first groove 24 is disposed on the side wall of the first base 22 and the first pressure cap 21 located within the first receiving space 201. The first limiting ring 23 is sleeved on the end of the sealing joint 200 located within the first receiving space 201 and disposed within the first groove 24.

[0032] The sealing joint testing system 100 provided in this application forms a closed first receiving space 201 by fixing the first base 22 and the first pressure cap 21 along the Z direction. This space provides rigid clamping to the end of the sealing joint 200 from above and below, preventing displacement of the sealing joint 200 due to pressure impact or thermal deformation during ultra-high pressure and high temperature tests. Furthermore, the first limiting ring 23 is positioned and fitted onto the sealing joint 200 through the first groove 24, circumferentially restricting radial movement of the sealing joint 200. This, combined with the upper and lower clamping structure of the first base 22 and the first pressure cap 21, forms a three-dimensional fixation, further improving the coaxiality and stability of the sealing joint 200 after installation, and providing a reliable installation foundation for testing the sealing performance of the sealing joint 200.

[0033] Meanwhile, the first limiting ring 23 can be flexibly adapted to the outer diameter specification of the sealing joint 200, and the structure of the first groove 24 can be compatible with the first limiting ring 23 of different sizes, so that the fixing mechanism does not need to be replaced as a whole, thus expanding the adaptability range of the sealing joint test system 100 provided in this application to sealing joints 200 of different specifications.

[0034] In some embodiments, along direction Z, the first gland 21 has an opening 211 that penetrates the first gland 21 and connects to the first receiving space 201. One end of the pipe connected to the sealing joint 200 and the pressure testing mechanism 60 passes through the opening 211 into the first receiving space 201 and connects to the sealing joint 200, while the other end connects to the pressure testing mechanism 60.

[0035] The sealing joint testing system 100 provided in this application, by setting an opening 211, provides a dedicated installation channel for the high-pressure connector, allowing the high-pressure connector to directly extend into the first receiving space 201 through the opening 211 and thus connect with the sealing joint 200. This reduces the exposure points in the medium transmission path and lowers the risk of leakage of ultra-high pressure media. Furthermore, the cooperation between the opening 211 and the high-pressure connector can form a positioning constraint, preventing the high-pressure connector from shifting or shaking under high pressure impact, ensuring the sealing stability of the connection between the sealing joint 200 and the high-pressure connector, and meeting the stringent requirements of ultra-high pressure tests above 100MPa.

[0036] Meanwhile, the opening 211 in the sealing joint test system 100 provided in this application penetrates the first pressure cap 21 along the Z direction, precisely corresponding to the installation position of the sealing joint 200. There is no need to open a side hole on the first pressure cap 21 or adjust the layout of the fixing mechanism, allowing the high-pressure pipe to be directly connected axially, thereby simplifying the pipeline layout. During assembly, there is no need to disassemble the fixing relationship between the first pressure cap 21 and the test platform 10. The connection can be completed simply by passing the high-pressure pipe through the opening 211, which shortens the construction and installation time of the sealing joint test system 100 and reduces the operational complexity.

[0037] In some embodiments, the first base 22 includes a lower end 221, an upper end 222, and a connecting portion 223. Along the Z direction, the upper and lower ends of the connecting portion 223 are respectively connected to the lower end 221 and the upper end 222. A first groove 24 is disposed on the upper end 222. The lower end 221 is connected and fixed to the test platform 10. A fixing hole 224 penetrating the upper end 222 is provided on the upper end 222. The fixing hole 224 is disposed on both sides of the first groove 24 located on the upper end 222. A first pressure cover 21 is provided with a through hole (not shown) that cooperates with the fixing hole 224. A connector passes through the through hole and the fixing hole 224 to connect and fix the first pressure cover 21 to the first base 22.

[0038] The sealing joint testing system 100 provided in this application features a segmented design with a lower end 221, a connecting part 223, and an upper end 222. The lower end 221 is directly fixed to the test platform 10 and bears the overall load of the first base 22. The upper end 222 is used to support the first pressure cap 21 and the first limiting ring 23. The connecting part 223 achieves a stable connection between the upper end 222 and the lower end 221, forming a rigid support system as a whole. This disperses the stress caused by ultra-high pressure and axial load during the test of the sealing joint 200, avoids overall deformation of the first base 22, ensures the coaxiality and stability of the sealing joint 200 installation, and is suitable for the mechanical requirements of high pressure above 100MPa and different load combinations.

[0039] Meanwhile, the fixing holes 224 are located on both sides of the first groove 24. The symmetrical distribution of the holes ensures that the locking force of the connector is evenly applied to the first cover 21 and the first base 22, preventing the first cover 21 from shifting under force and ensuring that the first cover 21 and the first base 22 fit tightly together, thereby improving the closure and sealing of the first accommodating space 201. Furthermore, the fixing holes 224 penetrate the upper end 222 and precisely match the through holes on the first cover 21, allowing the connector to be directly axially locked. The overall connection path is short and the force is direct, reducing the risk of loosening after the first cover 21 and the first base 22 are connected. This also prevents the first cover 21 from detaching from the first base 22 due to vibration during the test, ensuring test safety.

[0040] In some embodiments, along direction Z, the orthographic projection of the first groove 24 is located within the orthographic projection of the connecting portion 223, the orthographic projection of the fixing hole 224 is located outside the orthographic projection of the connecting portion 223, and the orthographic projection of the upper end portion 222 coincides with the orthographic projection of the lower end portion 221.

[0041] In some embodiments, the number of fixing holes 224 provided on the upper end 222 is four, with two fixing holes 224 forming a group, and the two groups of fixing holes 224 being located on both sides of the first groove 24 respectively.

[0042] In other embodiments, the number of fixing holes 224 may be greater than 4. For example, the number of fixing holes 224 may be 5, 6 or 7, etc., and this application does not limit this.

[0043] In some embodiments, the number of first grooves 24 corresponds to the number of first limiting rings 23, and the number of first limiting rings 23 is at least two, so that when one end of the sealing joint 200 is fixed in the first fixing mechanism 20 and the test is conducted, the shaking of the sealing joint 200 under axial load and bending moment load is reduced, thereby affecting the test results.

[0044] In some embodiments, the lower end 221 can be connected to the test platform 10 by adhesive bonding, or a connector can be provided to pass through the lower end 221 and be fixedly connected to the test platform 10. This application does not limit this.

[0045] In some embodiments, the lower end portion 221, the upper end portion 222, and the connecting portion 223 are integrally formed. In other embodiments, the lower end portion 221, the upper end portion 222, and the connecting portion 223 may also be connected by other non-integral forming methods, and this application does not limit this.

[0046] In some implementation methods, please refer to Figure 1 , Figure 2 and Figures 9 to 10 As shown, the second fixing mechanism 30 includes a second pressure cap 31, a second base 32, and a second limiting ring 33. Along the Z direction, the second load applying mechanism 50 is disposed below the second base 32 and fixed to the test platform 10.

[0047] A second receiving space 301 communicating with the outside is provided between the second pressure cap 31 and the second base 32. The second receiving space 301 is used to receive one end of the sealing joint 200. The second base 32 and the second pressure cap 31 are provided with a second groove 34 for receiving the second limiting ring 33. The second groove 34 is provided on the side wall of the second base 32 and the second pressure cap 31 located in the second receiving space 301. The second limiting ring 33 is sleeved on one end of the sealing joint 200 located in the second receiving space 301 and is provided in the second groove 34.

[0048] The sealing joint testing system 100 provided in this application has a second fixing mechanism 30 and a first fixing mechanism 20 configured with similar structures, thereby forming a symmetrical fixing structure at both ends of the sealing joint 200, and thus providing uniform clamping force from both ends of the sealing joint 200, ensuring the coaxiality of the sealing joint 200 during installation, and avoiding force displacement of the sealing joint 200 due to unilateral fixing during the test.

[0049] Meanwhile, the second accommodating space 301 corresponds precisely to the first accommodating space 201. Together with the circumferential constraint of the second limiting ring 33, it forms multiple positioning at both ends and in the circumferential direction on the sealing joint 200 with the first limiting ring 23, which further improves the installation stability of the sealing joint 200 under high pressure and load conditions and provides a reliable basis for sealing performance testing.

[0050] Furthermore, the second load application mechanism 50 is located below the second base 32 and fixed to the test platform 10. This arrangement ensures that the load application direction of the second load application mechanism 50 is consistent with the axial direction of the sealing joint 200. Through the connection structure within the second accommodating space 301, the load can be directly transmitted to the sealing joint 200, thereby reducing force loss and offset.

[0051] Finally, the second base 32 serves both to fix the sealing joint 200 and to provide an installation reference for the second load application mechanism 50, avoiding spatial interference between the second load application mechanism 50 and the second fixing mechanism 30, making the overall structural layout more compact and reasonable.

[0052] In some implementation methods, please refer to Figure 1 , Figure 2 and Figures 11 to 14 As shown, the first load application mechanism 40 includes a drive assembly 41, a pull head 42, and an extension mechanism 43. One end of the pull head 42 is located within the second receiving space 301 and connected to one end of the sealing joint. The extension mechanism 43 is connected to the other end of the pull head 42, and the drive assembly 41 is disposed within the extension mechanism 43 for applying an axial load to the sealing joint through the pull head 42.

[0053] The sealing joint testing system 100 provided in this application, by embedding the drive assembly 41 in the extension mechanism 43 and directly connecting it to the sealing joint 200 through the pull head 42, has a short force transmission path and no additional intermediate transmission links. This reduces the loss and directional deviation when the first load application mechanism 40 applies load to the sealing joint 200 through the drive assembly 41, and ensures that the axial load applied by the drive assembly 41 to the sealing joint 200 can be accurately applied to the stress-bearing part of the sealing joint 200.

[0054] Meanwhile, one end of the pull head 42 extends into the second receiving space 301 and docks with the sealing joint 200, while the other end connects to the drive assembly 41 through the extension mechanism 43, cleverly avoiding spatial interference from the second fixing mechanism 30, so that the load application direction of the first load application mechanism 40 is consistent with the axial direction of the sealing joint 200.

[0055] Furthermore, the extension mechanism 43 can be flexibly adjusted in length according to the overall size of the test platform 10 and the installation position of the sealing joint 200, so that it can adapt to the test requirements of sealing joints 200 of different specifications without changing the core structure of the entire sealing joint test system 100, thereby improving the versatility of the sealing joint test system 100 provided in this application.

[0056] The sealing joint testing system 100 provided in this application is directly connected to the sealing joint 200 by setting a pull-out head 42. When the first load application mechanism 40 applies axial load, it can maintain the coaxiality of the axial force, avoid the first load application mechanism 40 applying lateral force or additional bending moment, and reduce the influence of non-test factors on the testing of the sealing joint 200.

[0057] In some embodiments, the drive assembly 41 includes a first load applicator 411 and a first load measuring member 412, the first load applicator 411 being used to provide an axial load and the first load measuring member 412 being used to measure the magnitude of the axial load provided by the first load applicator 411.

[0058] In some embodiments, the first load application element 411 may be a hydraulic cylinder, and the first load measuring element 412 may be a tensile tester.

[0059] In some embodiments, the pull head 42 includes a main body 421, a head 423, and a neck 422. Along the length X of the main body 421, one end of the neck 422 is connected to the main body 421, and the opposite end is connected to the head 423. The other end of the head 423 is connected to the sealing joint 200. The second pressure cap 31 and the second base 32 in the second fixing mechanism 30 are provided with a third groove 35 that mates with the head 423. The third groove 35 is located on the side wall of the second pressure cap 31 and the second base 32 located in the second receiving space 301. The head 423 mates with the third groove 35 to fix the pull head 42 to the second fixing mechanism 30. The drive assembly 41 applies an axial load to the main body 421 and transmits it to the sealing joint 200 through the neck 422 and the head 423.

[0060] The sealing joint testing system 100 provided in this application forms a straight force transmission path by axially connecting the main body 421, neck 422 and head 423, without bending or offset nodes. The axial load applied by the drive component 41 can be directly transmitted to the head 423 through the main body 421 and neck 422, and then accurately applied to the sealing joint 200 through the head 423, reducing the loss and directional deviation of the axial load.

[0061] Meanwhile, the main body 421 receives the power output of the drive assembly 41, the neck 422 realizes the transition and transmission of force, and the head 423 focuses on the connection with the sealing joint 200. The overall force logic is clear and can stably withstand the reverse force of the sealing joint 200 under ultra-high pressure conditions during the test, avoiding structural deformation or breakage during the loading process.

[0062] Furthermore, the head 423 precisely engages with the third groove 35 of the second fixing mechanism 30, achieving both the installation and positioning of the pull-out head itself and limiting the radial sway of the pull-out head 42 through the circumferential constraint of the third groove 35. This ensures the coaxiality of the pull-out head 42 and the sealing joint 200, preventing lateral forces from being generated during loading. Consequently, the pull-out head 42 and the second fixing mechanism 30 form a stable connection without affecting the clamping function of the second pressure cap 31 and the second base 32. This provides dual protection for the fixing of the pull-out head 42 and the positioning of the sealing joint 200, thereby improving the stability of the overall structure during the test.

[0063] Furthermore, the head 423 is specifically adapted to the third groove 35, while the neck 422 serves as a transition. The length can be optimized according to the dimensions of the second receiving space 301 along the X direction, so that the pull head 42 can connect with the sealing joint 200 and cooperate with the second fixing mechanism 30 without spatial interference with components such as the second pressure cap 31 and the second limiting ring 33.

[0064] In some embodiments, the extension mechanism 43 includes C-shaped plates 431, end plates 432, and baffles 433. At least four C-shaped plates 431 are provided. The baffles 433 are fixed to the test platform 10, and each baffle 433 has through holes 4330 penetrating it. The number of through holes 4330 corresponds to the number of C-shaped plates 431. One end of each C-shaped plate 431 passes through the through hole 4330 and is fixed to the pulling head 42. The opposite end connects the four C-shaped plates 431 via the end plates 432 to form a space for accommodating the drive assembly 41. The drive assembly 41 is disposed within the space enclosed by the C-shaped plates 431, with one end connected to the end plate 432 and the other end connected to the baffles 433.

[0065] The sealing joint testing system 100 provided in this application sets at least four C-shaped plates 431 distributed circumferentially. One end of the C-shaped plate 431 is fixed to the pull-out head 42, and the other end is connected through the end plate 432, so that the four C-shaped plates 431 form a closed frame structure with high rigidity and outstanding resistance to deformation. It can stably withstand the axial load applied by the drive component 41 and the reaction force when the sealing joint 200 is tested.

[0066] Multiple C-shaped plates 431, along with end plates 432 and baffles 433, enclose the space for the drive assembly 41. The dimensions of the C-shaped plates 431 precisely match the drive assembly 41, allowing the drive assembly 41 to be stably embedded without additional fasteners, achieving modular installation that is ready to use immediately. Simultaneously, the enclosed structure formed by the multiple C-shaped plates 431 provides circumferential protection for the drive assembly 41, isolating it from external environmental interference and improving the stability and lifespan of the drive assembly 41.

[0067] Finally, the baffle 433 is fixed to the test platform 10, providing a stable installation reference for the extension mechanism 43, preventing the extension mechanism 43 from shifting or shaking during the process of the first load application mechanism 40 applying load to the sealing joint 200. Furthermore, the symmetrical distribution of multiple C-shaped plates 431 can further enhance the overall structure's anti-overturning ability, thereby effectively dispersing the vibration generated by the drive component 41 during operation, reducing the impact on the pull-out head 42 and the sealing joint 200, avoiding load fluctuations or positioning deviations of the sealing joint 200 caused by vibration, and ensuring the safety of the test under ultra-high pressure and high load conditions.

[0068] In this embodiment, the test platform 10 includes a base 101 and protrusions 102 extending from the base 101 away from the base 101. There are at least two protrusions 102 arranged in parallel to each other. A baffle 433 is provided between the two protrusions 102, thereby fixing the baffle 433 to the test platform 10 and preventing the baffle 433 from shaking when the sealing joint 200 is subjected to an axial load by the first load application mechanism 40.

[0069] Preferably, there are four protrusions 102. Two protrusions 102 are disposed on the lower seat 11 of the test platform 10, and two protrusions 102 are disposed on the upper seat 13 of the test platform 10. Along the Z direction, one end of the baffle 433 abuts against the lower seat 11 and is clamped between the two protrusions 102 disposed on the lower seat 11, and the other end of the baffle 433 abuts against the upper seat 13 and is clamped between the two protrusions 102 disposed on the upper seat 13, thereby firmly fixing the baffle 433 on the test platform 10.

[0070] In some embodiments, the second load application mechanism 50 includes a second load application member 51 and a second load measuring member 52. Along the Z direction, both the second load application member 51 and the second load measuring member 52 are disposed below the second fixing mechanism 30. The second load application member 51 abuts against the second fixing mechanism 30 to provide a bending moment load, and the second load measuring member 52 is used to measure the magnitude of the bending moment load applied by the second load application member 51.

[0071] In some embodiments, the second load applicator 51 may be a hydraulic cylinder, and the second load measuring device 52 may be a tensile tester.

[0072] In some embodiments, the pressure testing mechanism 60 includes a pressurizing assembly 61, a high-pressure detection assembly 62, and a high-pressure connection 63. The pressurizing assembly 61 is connected to one end of the sealing joint 200 via the high-pressure connection 63, and is used to pressurize the sealing joint 200 by injecting fluid. The high-pressure detection assembly 62 is used to detect the pressure of the sealing joint 200.

[0073] The sealing joint testing system 100 provided in this application directly connects the pressurizing component 61 to the sealing joint 200 via a high-pressure pipe 63, thereby efficiently applying pressure to the sealing joint 200. The pressurizing component 61 can flexibly adjust the pressurization rate and target pressure value, and can set different pressure gradients according to different test requirements of the sealing joint 200, satisfying the sealing performance verification of the sealing joint 200 under different pressure levels, and providing diversified and quantifiable pressure conditions for the sealing performance test of the sealing joint 200. The high-pressure detection component 62 can collect the pressure data of the sealing joint 200 in real time, which can not only provide real-time feedback on whether the pressurization has reached the preset value to ensure the accuracy of test parameters, but also promptly detect abnormal pressure drops and issue early warnings at the first time.

[0074] In some embodiments, the pressurizing component 61 is a pressurizing air pump, a pressurizing liquid pump, a pressurizing air pump assembly, or a pressurizing liquid pump assembly, and this application does not limit this.

[0075] In some implementation methods, please refer to Figure 15 As shown, the heating and temperature control mechanism 70 encloses part of the first fixing mechanism 20, the sealing joint 200 and the second fixing mechanism 30, and heats the sealing joint 200 to a preset temperature, thereby maintaining the temperature of the sealing joint 200 during the test and reducing energy consumption.

[0076] In some embodiments, the sealing joint testing system 100 provided in this application further includes a monitoring mechanism 80, which is used to monitor the entire testing process when the sealing joint is tested by the sealing joint testing system 100 provided in this application.

[0077] Since the sealing joint testing system 100 provided in this application tests the sealing joint under ultra-high pressure and high temperature, the test itself is inherently dangerous. However, the sealing joint testing system 100 provided in this application can remotely monitor the entire test process of the sealing joint by setting up a monitoring mechanism 80, thereby ensuring personnel safety and preventing accidents during the test from causing personal injury or death.

[0078] In this embodiment, the monitoring device 80 described in this application is a high-definition camera.

[0079] Based on the same inventive concept, please refer to Figure 14As shown, this application provides a sealing joint testing method, applied to the aforementioned sealing joint testing system 100. The sealing joint testing method includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S20. Apply pressure to the sealing joint 200 to a preset pressure using the pressure testing mechanism 60, and maintain the pressure for a preset time. S30. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S40, gradually depressurize the sealing joint 200.

[0080] The sealing joint test method provided in this application is performed step by step in the order of fixing, pressurizing, observing and depressurizing. The steps are non-redundant and logically coherent. Operators can quickly master the core process and carry out the test without complicated training. Moreover, the operation objectives of each step from step S10 to step S40 are clear and there are no ambiguous instructions, which can reduce human operation deviations and ensure that the tests carried out by different operators are consistent and repeatable.

[0081] In step S20, the pressure is explicitly applied to a preset pressure and maintained for a preset time. This can accurately simulate the actual operating pressure (above 100MPa) and continuous service state of the ultra-high pressure tubular reactor, avoiding the disconnect between the test conditions and the actual scenario. Furthermore, the combination design of pressurization and pressure holding can fully test the sealing stability of the sealing joint 200 under long-term high pressure, rather than just testing the instantaneous pressure resistance, making the verification results more in line with actual use requirements.

[0082] Meanwhile, in step S30, the focus is on whether the sealing joint 200 exhibits failure signals such as leakage, abnormal deformation, or abnormal noise. These are all visual and perceptible intuitive indicators, which can quickly determine whether the sealing performance of the sealing joint 200 meets the standards without the need for complex testing equipment.

[0083] Step S40 explicitly requires gradual pressure relief to avoid the impact load generated by the instantaneous release of the high-pressure medium after the high pressure is applied to the sealing joint 200 and the test is completed. This protects the sealing joint 200 from damage by reverse pressure and also prevents safety accidents caused by instantaneous high-pressure leakage.

[0084] In some embodiments, the preset pressure in step S20 can be 100MPa or other pressures that need to be detected according to the working scenario of the sealing joint 200, and this application does not limit this.

[0085] In some embodiments, the sealing joint test method provided in this application includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S20. A preset axial load is applied to the sealing joint 200 by the first load application mechanism 40; S30. Apply pressure to the sealing joint to the preset pressure using the pressure testing mechanism 60, and maintain it for the preset time. S40. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S51. Gradually depressurize the sealing joint 200; S52. Axial force is unloaded from the sealing joint 200.

[0086] In some embodiments, the sealing joint test method provided in this application includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S20. A preset bending moment load is applied to the sealing joint 200 by the second load application mechanism 50; S30. Apply pressure to the sealing joint to the preset pressure using the pressure testing mechanism 60, and maintain it for the preset time. S40. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S51. Gradually depressurize the sealing joint 200; S52. Perform bending moment unloading on the sealing joint 200.

[0087] In some embodiments, the sealing joint test method provided in this application includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S21. A preset axial load is applied to the sealing joint 200 by the first load application mechanism 40; S22. A preset bending moment load is applied to the sealing joint 200 by the second load application mechanism 50; S23. Apply pressure to the sealing joint 200 to a preset pressure using the pressure testing mechanism 60, and maintain the pressure for a preset time; S30. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S41. Gradually depressurize the sealing joint 200; S42. Axial force is unloaded from the sealing joint 200; S43. Perform bending moment unloading on the sealing joint 200.

[0088] Since the sealing joint 200 typically operates under high pressure, such as 100 MPa, it is essential to ensure that the sealing joint 200 is under high pressure before conducting axial load and bending moment load tests. Otherwise, the results obtained from bending moment load or axial load tests under normal pressure are meaningless. Therefore, the sealing joint test method provided in this application first pressurizes the sealing joint 200 to its working pressure before conducting bending moment load or axial load tests, thereby obtaining more accurate test results.

[0089] Meanwhile, since high pressure is a high-risk test item in the testing of the sealing joint 200, after the test of the sealing joint 200 is completed, the pressure of the sealing joint 200 is first released, and then the axial force or bending moment load is unloaded from the sealing joint 200. This ensures the overall safety of the test process. In some embodiments, the sealing joint test method provided in this application includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S20. The sealing joint 200 is heated to a preset temperature by the heating and temperature control mechanism 70; S30. Pressure is applied to the sealing joint 200 by the pressure testing mechanism 60 to a preset pressure and maintained for a preset time; S40. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S50, gradually depressurize the sealing joint 200; S60, the sealing joint 200 is cooled to room temperature by the heating and temperature control mechanism 70.

[0090] Since the sealing joint 200 described in this application is typically used in ultra-high pressure tubular reactors, and its operating temperature is extremely high, this application first heats the sealing joint 200 to a set temperature, and then pressurizes the sealing joint 200 to a set pressure. This prevents the sealing joint 200 from being pressurized to a set pressure first and then heated, which would cause the pressure to rise after heating, resulting in inaccurate test results.

[0091] In some embodiments, the sealing joint test method provided in this application includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S20. The sealing joint 200 is heated to a preset temperature by the heating and temperature control mechanism 70; S31. A preset axial load is applied to the sealing joint 200 by the first load application mechanism 40; S32. Apply pressure to the sealing joint 200 to a preset pressure using the pressure testing mechanism 60, and maintain the pressure for a preset time. S40. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S51. Gradually depressurize the sealing joint 200; S52. Axial force is unloaded from the sealing joint 200; S60, the sealing joint 200 is cooled to room temperature by the heating and temperature control mechanism 70.

[0092] In some embodiments, the sealing joint test method provided in this application includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S20. The sealing joint 200 is heated to a preset temperature by the heating and temperature control mechanism 70; S31. A preset bending moment load is applied to the sealing joint 200 by the second load application mechanism 50; S32. Apply pressure to the sealing joint 200 to a preset pressure using the pressure testing mechanism 60, and maintain the pressure for a preset time. S40. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S51. Gradually depressurize the sealing joint 200; S52. Perform bending moment unloading on the sealing joint 200; S60, the sealing joint 200 is cooled to room temperature by the heating and temperature control mechanism 70.

[0093] In some implementation methods, please refer to Figure 16 As shown, the test method for sealing joints provided in this application includes: S10. The sealing joint 200 is fixed by the first fixing mechanism 20 and the second fixing mechanism 30; S20. The sealing joint 200 is heated to a preset temperature by the heating and temperature control mechanism 70; S31. A preset axial load is applied to the sealing joint 200 by the first load application mechanism 40; S32. A preset bending moment load is applied to the sealing joint 200 by the second load application mechanism 50; S33. Apply pressure to the sealing joint 200 to a preset pressure using the pressure testing mechanism 60, and maintain it for a preset time; S40. Observe whether the sealing joint 200 leaks, deforms abnormally, or makes abnormal noises. S51. Gradually depressurize the sealing joint 200; S52. Axial force is unloaded from the sealing joint 200; S53. Perform bending moment unloading on the sealing joint 200; S60, the sealing joint 200 is cooled to room temperature by the heating and temperature control mechanism 70.

[0094] The sealing joint test method provided in this application tests the sealing joint 200 under axial load and bending moment load by heating and pressurizing the sealing joint 200 to a preset temperature and pressure, thereby testing the sealing performance of the sealing joint 200 under working conditions and ensuring the sealing performance of the sealing joint 200.

[0095] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description, and for the sake of brevity they are not provided in the details.

[0096] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A sealing joint testing system, characterized in that, include: Test platform; A first fixing mechanism is provided on the test platform and is used to connect to one end of the sealing joint; The second fixing mechanism is set on the test platform and is used to connect to the other end opposite to the sealing joint, thereby cooperating with the first fixing mechanism to fix the sealing joint. The first load application mechanism is set on the test platform to apply an axial load to the sealing joint; The second load application mechanism is set on the test platform to apply bending moment load to the sealing joint; A pressure testing mechanism, used to connect to a sealing joint to apply pressure to the sealing joint; The heating and temperature control mechanism is used to heat the sealing joint to a predetermined temperature and maintain the sealing joint temperature constant.

2. The sealing joint testing system according to claim 1, characterized in that, The first fixing mechanism includes a first pressure cap, a first base, and a first limiting ring; along a direction perpendicular to the plane of the test platform, the lower end of the first base is fixed to the test platform, the first pressure cap is disposed at the upper end of the first base and connected to the first base; a first accommodating space communicating with the outside is provided between the first pressure cap and the first base, the first accommodating space being used to accommodate one end of the sealing joint; the first base and the first pressure cap are provided with a first groove for accommodating the first limiting ring, the first groove being disposed on the side wall of the first base and the first pressure cap located within the first accommodating space, and the first limiting ring being sleeved on the end of the sealing joint located within the first accommodating space and disposed within the first groove; The pressure testing mechanism includes a pressurizing component, a high-pressure detection component, and a high-pressure connector. The pressurizing component is connected to one end of the sealing joint through the high-pressure connector and is used to inject liquid and pressurize the sealing joint. The high-pressure detection component is used to detect the pressure of the sealing joint.

3. The sealing joint testing system according to claim 2, characterized in that, Along a direction perpendicular to the plane of the test platform, the first pressure cover has an opening that penetrates the first pressure cover and connects to the first accommodating space. One end of the high-pressure pipe passes through the opening and enters the first accommodating space to connect with the sealing joint, and the other end is connected to the pressurization component.

4. The sealing joint testing system according to claim 1, characterized in that, The second fixing mechanism includes a second pressure cap, a second base, and a second limiting ring; along a direction perpendicular to the plane of the test platform, the second load applying mechanism is disposed below the second base and fixed to the test platform; A second receiving space communicating with the outside is provided between the second pressure cap and the second base. The second receiving space is used to receive one end of the sealing joint. The second base and the second pressure cap are provided with a second groove for receiving the second limiting ring. The second groove is provided on the side wall of the second base and the second pressure cap located in the second receiving space. The second limiting ring is sleeved on one end of the sealing joint located in the second receiving space and is provided in the second groove.

5. The sealing joint testing system according to claim 4, characterized in that, The first load application mechanism includes a drive assembly, a pull head, and an extension mechanism; one end of the pull head is located in the second receiving space and connected to one end of the sealing joint; the extension mechanism is connected to the other end of the pull head, and the drive assembly is disposed in the extension mechanism for applying an axial load to the sealing joint through the pull head.

6. The sealing joint testing system according to claim 5, characterized in that, The extension mechanism includes a C-shaped plate, an end plate, and a baffle; there are at least four C-shaped plates; the baffle is fixed to the test platform, and the baffle has through holes, the number of which corresponds to the number of C-shaped plates. One end of the C-shaped plate passes through the through hole and is fixed to the pulling head, and the other end is connected to the four C-shaped plates through the end plate to form a space for accommodating the drive assembly; the drive assembly is disposed within the space enclosed by the C-shaped plates, and one end of the drive assembly is connected to the end plate, and the other end is connected to the baffle.

7. The sealing joint testing system according to claim 1, characterized in that, It also includes a monitoring mechanism for monitoring the sealing joint throughout the testing process using the sealing joint testing system.

8. A method for testing a sealed joint, applied to the sealed joint testing system as described in any one of claims 1-7, characterized in that, include: The sealing joint is fixed by the first fixing mechanism and the second fixing mechanism; The pressure testing mechanism applies pressure to the sealing joint to a preset pressure and maintains it for a preset time. Observe whether the sealing joint leaks, deforms abnormally, or makes abnormal noises; Gradually depressurize the sealing joint.

9. The test method for sealed joints according to claim 8, characterized in that, The step of applying pressure to the sealing joint to a preset pressure and maintaining it for a preset time via the pressurizing component further includes: A preset bending moment load is applied to the sealing joint by the second load application mechanism; And / or, a preset axial load is applied to the sealing joint by the first load application mechanism; The gradual depressurization of the sealing joint also includes: Bending moment unloading is applied to the sealing joint; And / or, axial force unloading of the sealing joint.

10. The test method for sealing joints according to claim 9, characterized in that, The step of applying pressure to the sealing joint to a preset pressure and maintaining it for a preset time through the pressure testing mechanism further includes: The sealing joint is heated to a preset temperature by the heating and temperature control mechanism. The gradual depressurization of the sealing joint also includes: The sealing joint is cooled to room temperature by the heating and temperature control mechanism.

Images