Safety snap valve double-station radial fracture test system for petrochemical industry

Abstract

A safety break valve double-station radial fracture test system for petrochemical engineering is characterized in that a high-frequency high-pressure pulse air cannon moving between the upper ends of a right-end support assembly and a left-end support assembly is arranged in the middle of the upper end of a bottom frame, and the left-end support assembly is connected with a supercharging device; a shooting port of the high-resolution image measurement and simulation optimization analysis system moves between the upper ends of the right-end support assembly and the left-end support assembly, and a tested safety snap valve is arranged between the upper ends of the right-end support assembly and the left-end support assembly. The device has the main advantages that high-precision and high-resolution full strain or instantaneous deformation fracture measurement is realized, accurate and effective simulation measurement is effectively carried out on the process that the safety break valve is subjected to instantaneous shearing and fracture in the sudden dragging process, the automation degree is high, the measurement and analysis precision is high, the detection time efficiency and accuracy are improved, the detection cost is reduced, and the detection efficiency is improved. And product safety and quality improvement are facilitated.

Description

Technical Field

[0001] This invention relates to the field of testing equipment, and in particular to a dual-position radial fracture test system for a safety breakaway valve used in petrochemicals. Background Technology

[0002] According to HG / T 21608-2012 "Technical Requirements for Liquid Loading and Unloading Arms," ​​the safety breakaway valve, as a key component of the emergency disconnection system in land-based or marine liquid loading and unloading arms for hazardous liquid transportation systems, is one of the key factors determining the overall safety of the system. A safety breakaway valve is a critical safety protection device installed at the connection point of a hazardous fluid transportation pipeline. Its main function is to automatically disconnect the valve when subjected to sudden abnormal external forces such as pulling, dragging, or accidental impact, prioritizing the breakage of its weakest safety component, the shear pin or breakable bolt. Upon disconnection, it achieves self-sealing at both ends, preventing leakage of hazardous fluid media and thus avoiding accidents such as fires, explosions, environmental pollution, and personal injury. Due to their safety features, safety breakaway valves are widely used in various fluid loading and unloading situations where there is a risk of accidental dragging, such as: 1) the filling / refueling process at gas stations, installed on the refueling hose, automatically disconnecting and self-sealing when a vehicle accidentally drives away with the nozzle, preventing fuel leakage and equipment tipping accidents; 2) the dock-ship-shore connection process, enabling emergency detachment in case of accidental ship drift, ensuring safety; 3) the loading and unloading process of dangerous liquid cargo in road / rail tank cars, preventing the danger of pipeline tearing caused by vehicles driving away without detaching from the hose; 4) the aerospace fuel refueling process, used in liquid hydrogen, liquid oxygen, and other refueling systems, achieving self-sealing when accidentally detached, preventing leakage of high-risk liquids / gases, and ensuring operational safety under extreme conditions.

[0003] In the above application scenarios, the safety disconnect valve essentially acts as a weak connection point in the fluid transmission system. During normal operation, it maintains a stable connection of the fluid pipeline. When the external force exceeds the preset threshold, the device will immediately trigger the separation mechanism, causing the one-way valves on both sides of the safety shut-off valve to close rapidly under the spring force, achieving bidirectional sealing and avoiding the danger of dangerous fluid leakage.

[0004] In the above application scenarios, the safety break valve plays an important role in preventing leakage by breaking the protective component due to sudden traction and dragging. The stress situation of the safety break valve during this process can be summarized into the following key points and research difficulties: 1) The sudden dragging situation is similar to an instantaneous impact or collision process; 2) The sudden dragging has directional uncertainty; 3) The stress on the protective component can be mainly decomposed into axial tensile stress and radial shear force; 2) The stress is instantaneous; 3) Protective fracture occurs at structural weaknesses such as breakable bolts or shear pins; 4) Radial shear force plays a dominant role in the fracture process.

[0005] Currently, existing domestic and international standards such as GB / T 38520-2020 "Marine Cryogenic Breakaway Valves", GB / T 22380.2-2019 "Safety Technology for Explosion-proof Fuel Dispensing Stations Part 2: Safety Requirements for Structure and Performance of Safety Breakaway Valves for Fuel Dispensers", EN14432:2023, and other research literature are mostly focused on or limited to the study of static axial tensile fracture, while there is relatively little research on the main stress radial shear force and full strain process generated by the instantaneous impact of the safety breakaway valve during sudden towing. Therefore, the existing domestic research on fracture testing of safety breakaway valves and the related devices used mostly exhibit the following characteristics or shortcomings: 1) Hydraulic axial tension devices can only perform axial tension tests. Due to the characteristics of hydraulics, the output force is large and stable, but the loading process is slow, making it impossible to achieve instantaneous thrust output and simulate the instantaneous nature of the dragging process and the situation of fracture mainly caused by shear force; 2) Pendulum radial impact testing devices are large in size and occupy a lot of space. Improper tooling design may prevent rotation to release energy, causing the pendulum to remain on the surface of the test piece after impact, preventing energy release through the fracture point. This results in multiple energy rebounds, significantly reducing test accuracy. Furthermore, the pendulum counterweight and height need to be reset according to the load requirements each time, leading to large system errors and low test efficiency and accuracy; 3) The traditional measurement tools used in the above devices, such as strain gauges, displacement sensors, accelerometers, and extensometers, can only obtain limited local data points and cannot track and analyze the full strain scenario, resulting in insufficient information and accuracy for finite element evaluation. None of the above devices can meet the requirements for accurate measurement and numerical characterization of the safety shut-off valve's breakage due to instantaneous radial shear force during sudden dragging or impact processes. This is detrimental to improving the safety, product quality, and widespread application of the safety shut-off valve in hazardous fluid loading and unloading systems. Summary of the Invention

[0006] The purpose of this invention is to solve the existing technical problems by proposing a dual-position radial fracture test system for safety breakaway valves used in petrochemicals.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a dual-position radial fracture test system for a safety breakaway valve used in petrochemicals, comprising a base frame, a right-end support assembly, a left-end support assembly, a high-frequency high-pressure pulse air cannon, a pressurizing device, a high-resolution image measurement and simulation optimization analysis system, and a slide rail. The left-end support assembly is fixedly mounted on the upper left side of the base frame, and the slide rail is mounted on the upper right side of the base frame. The lower end of the right-end support assembly is fitted onto the slide rail. A high-frequency high-pressure pulse air cannon that moves along the upper ends of the right-end support assembly and the left-end support assembly is mounted in the middle of the upper end of the base frame. The pressurizing device is connected to the left-end support assembly. The safety breakaway valve under test is located between the upper ends of the right-end support assembly and the left-end support assembly. The imaging port of the high-resolution image measurement and simulation optimization analysis system is placed on the movable support and can always focus on the fracture test point of the safety breakaway valve under test according to the test requirements.

[0008] Furthermore, the right-end support assembly includes a dovetail groove base plate, a right-end barrel, a right-end threaded bar, a right-end bearing, a right-end stepped shaft blind plate, and a right-end inverted T-shaped bracket. The dovetail groove base plate is connected to a slide rail mounted on the base frame. The right-end barrel is bolted to the top of the dovetail groove base plate. A grooved platform for placing the right-end bearing is provided on the top of the right-end barrel. A 100° rotating circular hole slot is symmetrically opened in the middle of the right-end barrel. The 100° rotating circular hole slot is used for the right-end threaded bar to pass through and connect with the right-end stepped shaft blind plate and rotate. The upper shoulder of the right-end stepped shaft blind plate presses against the inner ring of the right-end bearing and vertically inserts the right-end stepped shaft part into the right-end barrel. The blind plate part of the right-end stepped shaft blind plate is placed outside the right-end barrel and fixedly installed to connect the right-end inverted T-shaped bracket for connecting one flange of the safety breakaway valve under test. The right-end inverted T-shaped bracket rotates and is positioned together with the right-end stepped shaft blind plate.

[0009] Furthermore, the high-frequency high-pressure pulse air gun includes a high-speed thrust release device and a high-frequency high-pressure pulse triggering device. The high-speed thrust release device is placed on the base frame and aligned with the test part of the safety break valve. The high-frequency high-pressure pulse triggering device is connected to the high-speed thrust release device. The high-speed thrust release device outputs under the signal triggering of the high-frequency high-pressure pulse triggering device. The high-frequency high-pressure pulse triggering device is connected to a high-resolution image measurement and simulation optimization analysis system. The high-resolution image measurement and simulation optimization analysis system provides a remote synchronous trigger signal and collects parameters such as impact energy and thrust.

[0010] Furthermore, the left-end support assembly includes a left-end base plate, a left-end barrel, a left-end threaded bar, a left-end bearing, a left-end stepped shaft blind plate, a left-end inverted T-shaped bracket, a first manual valve, a second manual valve, a pressure sensor, a pressure stabilizing tank, and a pressure gauge. The left-end base plate is fixed to the upper left of the base frame. The left-end barrel is bolted to the upper part of the left-end base plate. A grooved platform for placing the left-end bearing is provided on the upper part of the left-end barrel. A 100° rotating circular hole slot is symmetrically opened in the middle of the left-end barrel. The 100° rotating circular hole slot allows the left-end threaded bar to pass through and rotate after connecting with the left-end stepped shaft blind plate. The upper shoulder of the left-end stepped shaft blind plate presses against the inner ring of the left-end bearing and holds the left-end stepped... The shaft portion is vertically inserted into the left end barrel. The blind plate portion of the left end stepped shaft blind plate is fixedly installed outside the left end barrel. The left end inverted T-shaped bracket is used to connect the flange at the other end of the safety break valve under test. The left end inverted T-shaped bracket rotates and is positioned together with the left end stepped shaft blind plate. The pressure stabilizing tank is placed on the outer side of the upper end of the left end inverted T-shaped bracket. The first manual valve for fluid medium switching and the second manual valve for venting are respectively placed on the side branch and the top of the pressure stabilizing tank. The pressure sensor for transmitting pressure signals to the high-resolution image measurement and simulation optimization analysis system in real time is placed between the first manual valve and the pressure stabilizing tank. The pressure gauge for on-site test pressure monitoring is located on the top of the pressure stabilizing tank.

[0011] Furthermore, the slide rail is a parallel double-row slide rail with an X-shaped cross-section, which mates with a dovetail groove bottom plate and has a displacement locking structure.

[0012] Furthermore, the slide rail end is equipped with an anti-collision buffer bracket, which includes an elastic-plastic buffer block and an L-shaped bracket. The anti-collision buffer bracket is placed at the middle position of the displacement endpoint of the parallel double-row slide rails, and the elastic-plastic buffer block is fixedly installed on the front side of the L-shaped bracket.

[0013] Furthermore, a right-end elastic-plastic anti-collision buffer pad is symmetrically arranged at the end of the 100° rotating circular groove on the right end of the barrel; a left-end elastic-plastic anti-collision buffer pad is symmetrically arranged at the end of the 100° rotating circular groove on the left end of the barrel.

[0014] Furthermore, the pressurization device is connected to the first manual valve via a high-pressure quick connector and a pressure hose to provide the test fluid medium and pressure to the product under test, and communicates with the high-resolution image measurement and simulation optimization analysis system to achieve remote pressurization control.

[0015] Furthermore, the high-resolution image measurement and simulation optimization analysis system includes a high-resolution image measurement and simulation optimization analysis data processing center, a signal synchronous triggering and acquisition device, and a high-frequency high-resolution industrial camera. The high-resolution image measurement and simulation optimization analysis data processing center is synchronously interconnected with the signal synchronous triggering and acquisition device and the high-frequency high-resolution industrial camera, and also communicates synchronously with the pressure sensor, the high-frequency high-pressure pulse triggering device, and the pressurization device. It is used for full strain field image measurement and simulation optimization analysis of the radial shear force of the instantaneous impact fracture of the tested breakaway valve, and records and analyzes the fracture force value, stress-strain process value, internal pressure change of the tested product, and other key parameters in real time. The signal synchronous triggering and acquisition device provides synchronous triggering signals to the high-frequency high-resolution industrial camera and receives the feedback information. The high-frequency high-resolution industrial camera is aligned with the tested part of the safety breakaway valve according to the test requirements.

[0016] Furthermore, a through hole is opened in the middle of the vertical plate of the left-end inverted T-shaped bracket to allow the test fluid to enter and exit. The through hole connects the pressure stabilizing tank and the safety break valve under test.

[0017] The beneficial effects of this invention are: 1) The high-frequency high-pressure pulse air cannon device simulates instantaneous impact load, achieving a shock wave similar to that generated by a bomb explosion, concentrating the impact energy at a high speed in one place. It can accurately reproduce the instantaneous damage process of the safety break valve under test when it is subjected to sudden drag or impact during use, eliminating the shortcomings of the traditional hydraulic test device's unidirectional slow test and the pendulum impact test device's test distortion, deviation, and large error, and greatly improving the accuracy and effectiveness of the test.

[0018] 2) The dual-station zero-load fixture design with sliding / rotating / locking installation avoids the need for extensive fixture fabrication in traditional hydraulic and other tests. It eliminates the adverse effects of traditional fixtures, such as reduced test accuracy due to preload stress and damage to the valve and sealing structure caused by the valve components remaining in their original positions after shear pin or breakage bolt breaks. It satisfies the requirements for rotational energy release and buffering safety in mid-section instantaneous impact tests, as well as sliding energy release and buffering safety in end-section instantaneous impact tests, significantly improving test effectiveness, accuracy, efficiency, and automation level.

[0019] 3) High-resolution image measurement and simulation optimization analysis technology is adopted to replace and eliminate the limitation of traditional sensing measurement that can only provide local strain information. It provides high-definition image measurement and recognition of the entire strain field, and can realize real-time imaging and analysis of tensile force, stress-strain, impact force value, and internal medium pressure, as well as data processing optimization functions. This provides a solid foundation for product simulation optimization analysis and quality improvement, and helps to perform high-precision and accurate simulation measurement and optimization analysis of the instantaneous shearing process of safety break valve under sudden dragging.

[0020] 4) By employing high-resolution image measurement and simulation optimization analysis technology, high-frequency high-pressure pulse air cannon simulation of instantaneous load technology, and dual-station zero-load tooling design with sliding / rotating / locking installation, the shortcomings of traditional sensing measurement, hydraulic or pendulum systems, and the influence of installation preload on measurement accuracy are replaced and eliminated. This achieves high-precision, high-resolution full strain or instantaneous deformation fracture measurement, effectively simulating and measuring the instantaneous shear fracture process of safety pull-off valves under sudden dragging. It features high automation, intelligence, high measurement and analysis accuracy, convenient measurement and installation, and small equipment size, improving detection efficiency and accuracy, reducing detection costs, and contributing to product safety and quality improvement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure.

[0022] Figure 2 This is a schematic diagram of the left and right elastic-plastic impact-resistant buffer pads.

[0023] 1 represents the base frame; 2 is the right end support assembly; 2.1 is the bottom plate with dovetail groove; 2.2 is the right end barrel body; 2.3 is the right end threaded round bar; 2.4 is the right end bearing; 2.5 is the right end stepped shaft blind plate; 2.6 is the right end inverted T-shaped support; 2.7 is the right end elastic-plastic anti-collision buffer pad; 3 is a high-frequency, high-voltage pulse air cannon; 3.1 is a high-speed thrust release device; 3.2 is a high-frequency, high-voltage pulse triggering device; 4 is the left end support assembly; 4.1 is the left end base plate; 4.2 is the left end barrel body; 4.3 is the left end threaded round bar; 4.4 is the left end bearing; 4.5 is the left end stepped shaft blind plate; 4.6 is the left end inverted T-shaped support; 4.7 is the first manual valve; 4.8 is the pressure sensor; 4.9 is the pressure stabilizing tank; 4.10 is the second manual valve; 4.11 is the pressure gauge; 4.12 is the left end elastic-plastic anti-collision buffer pad; 5 is a booster device; 6 represents the high-resolution image measurement and simulation optimization analysis system; 6.1 represents the high-resolution image measurement and simulation optimization analysis data processing center; 6.2 represents the signal synchronization triggering and acquisition device; and 6.3 represents the high-frequency, high-resolution industrial camera. 7 is the safety break valve under test; 8 is a crash-resistant buffer bracket; 8.1 is an elastic-plastic buffer block; 8.2 is an L-shaped bracket; 9 represents the slide rail. Detailed Implementation

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1 combined with appendix Figure 1-2 A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals includes a base frame 1, a right-end support assembly 2, a left-end support assembly 4, a high-frequency high-pressure pulse air cannon 3, a pressurizing device 5, a high-resolution image measurement and simulation optimization analysis system 6, and a slide rail 9. The left-end support assembly 4 is fixedly mounted on the upper left side of the base frame 1, and the slide rail 9 is mounted on the upper right side of the base frame 1. The lower end of the right-end support assembly 2 is fitted onto the slide rail 9. The high-frequency high-pressure pulse air cannon 3, which moves along the upper ends of the right-end support assembly and the left-end support assembly, is located in the middle of the upper end of the base frame 1. The pressurizing device 5 is connected to the left-end support assembly 4. The safety breakaway valve 7 under test is located between the upper ends of the right-end support assembly 2 and the left-end support assembly 4. The high-resolution image measurement and simulation optimization analysis system 6 is placed outside the base frame. The imaging port of the high-resolution image measurement and simulation optimization analysis system is placed on an independent bracket and can always focus on the fracture test point of the safety breakaway valve under test according to the test requirements.

[0026] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals includes a right-end support assembly comprising a dovetail groove base plate 2.1, a right-end barrel 2.2, a right-end threaded round bar 2.3, a right-end bearing 2.4, a right-end stepped shaft blind plate 2.5, and a right-end inverted T-shaped bracket 2.6. The dovetail groove base plate 2.1 is connected to a slide rail 9 mounted on a base frame 1. The right-end barrel 2.2 is bolted to the top of the dovetail groove base plate 2.1. A grooved platform for placing the right-end bearing 2.4 is provided on the top of the right-end barrel 2.2. Symmetrical openings are located in the middle of the right-end barrel 2.2. A 100° rotating circular slot is used for the right-end threaded round bar 2.3 to pass through and connect with the right-end stepped shaft blind plate 2.5 and rotate. The upper shoulder of the right-end stepped shaft blind plate 2.5 presses against the inner ring of the right-end bearing 2.4 and vertically inserts the right-end stepped shaft part into the right-end barrel 2.2. The blind plate part of the right-end stepped shaft blind plate is placed outside the right-end barrel 2.2 and fixedly installed with the right-end inverted T-shaped bracket 2.6 for connecting the flange of one end of the safety break valve 7 under test. The right-end inverted T-shaped bracket 2.6 rotates and is positioned together with the right-end stepped shaft blind plate 2.5.

[0027] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals includes a high-frequency high-pressure pulse air gun 3 comprising a high-speed thrust release device 3.1 and a high-frequency high-pressure pulse triggering device 3.2. The high-speed thrust release device 3.1 is placed on a base frame 1 and aligned with the test part of the safety breakaway valve 7. The high-frequency high-pressure pulse triggering device 3.2 is connected to the high-speed thrust release device 3.1, and the high-speed thrust release device 3.1 outputs a signal triggered by the high-frequency high-pressure pulse triggering device 3.2. The high-frequency high-pressure pulse triggering device 3.2 is connected to a high-resolution image measurement and simulation optimization analysis system 6, which provides a remote synchronous trigger signal and acquires impact energy and thrust parameters.

[0028] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals includes a left-end support assembly 4 comprising a left-end base plate 4.1, a left-end barrel 4.2, a left-end threaded bar 4.3, a left-end bearing 4.4, a left-end stepped shaft blind plate 4.5, a left-end inverted T-shaped bracket 4.6, a first manual valve 4.7, a second manual valve 4.10, a pressure sensor 4.8, a pressure stabilizing tank 4.9, and a pressure gauge 4.11. The left-end base plate 4.1 is fixed to the upper left of the base frame 1. The left-end barrel 4.2 is bolted to the top of the left-end base plate 4.1. A grooved platform for placing the left-end bearing 4.4 is provided on the top of the left-end barrel 4.2. A symmetrical 100° rotating circular hole slot is opened in the middle of the left-end barrel 4.2, allowing the left-end threaded bar 4.3 to pass through and rotate, connecting to the left-end stepped shaft blind plate 4.5. The upper platform of the left-end stepped shaft blind plate 4.5... The inner ring of the left-end bearing 4.4 is pressed tightly against the shoulder, and the left-end stepped shaft portion is vertically inserted into the left-end barrel 4.2. The blind plate portion of the left-end stepped shaft blind plate is placed outside the left-end barrel 4.2 and fixedly installed with the left-end inverted T-shaped bracket 4.6 for connecting the flange of the other end of the safety break-off valve 7 under test. The left-end inverted T-shaped bracket 4.6 rotates and is positioned together with the left-end stepped shaft blind plate 4.5. The pressure tank 4.9 is placed on the outer side of the upper end of the left-end inverted T-shaped bracket 4.6. The first manual valve 4.7 for fluid medium switching and the second manual valve 4.10 for venting are placed on the side branch and top of the pressure tank 4.9, respectively. The pressure sensor 4.8 for transmitting pressure signals to the high-resolution image measurement and simulation optimization analysis system in real time is placed between the first manual valve 4.7 and the pressure tank 4.9. The pressure gauge 4.11 for on-site test pressure monitoring is located on the top of the pressure tank 4.9.

[0029] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals, wherein the slide rail 9 is a parallel double-row slide rail with an X-shaped cross section, which mates with a dovetail groove bottom plate 2.1 and has a displacement locking structure.

[0030] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals is provided. The slide rail end is equipped with an anti-collision buffer bracket 8. The anti-collision buffer bracket 8 includes an elastic-plastic buffer block 8.1 and an L-shaped bracket 8.2. The anti-collision buffer bracket 8 is placed at the middle position of the displacement endpoint of the parallel double-row slide rails. The elastic-plastic buffer block 8.1 is fixedly installed on the front side of the L-shaped bracket 8.2.

[0031] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals, wherein a right-end elasto-plastic anti-collision buffer pad 2.7 is symmetrically arranged at the end of the 100° rotating circular groove of the right-end barrel 2.2; and a left-end elasto-plastic anti-collision buffer pad 4.12 is symmetrically arranged at the end of the 100° rotating circular groove of the left-end barrel 4.2.

[0032] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals includes a pressurization device 5 connected to a first manual valve 4.7 via a high-pressure quick connector and a pressure hose. This device provides the test fluid medium and pressure to the product under test and communicates with a high-resolution image measurement and simulation optimization analysis system 6 to achieve remote pressurization control.

[0033] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals includes a high-resolution image measurement and simulation optimization analysis system 6. This system comprises a high-resolution image measurement and simulation optimization analysis data processing center 6.1, a signal synchronization triggering and acquisition device 6.2, and a high-frequency high-resolution industrial camera 6.3. The high-resolution image measurement and simulation optimization analysis data processing center 6.1 is synchronously interconnected with the signal synchronization triggering and acquisition device 6.2 and the high-frequency high-resolution industrial camera 6.3, and also communicates synchronously with a pressure sensor 4.8, a high-frequency high-pressure pulse triggering device 3.2, and a pressurization device 5. This system is used for full-strain field image measurement and simulation optimization analysis of the instantaneous impact fracture radial shear force of the tested breakaway valve, recording and analyzing key parameters such as fracture force values, stress-strain process values, and internal pressure changes of the tested product in real time. The signal synchronization triggering and acquisition device 6.2 provides a synchronous trigger signal to the high-frequency high-resolution industrial camera 6.3 and receives the returned information. The high-frequency high-resolution industrial camera 6.3 is aligned with the tested part of the safety breakaway valve 7 according to the test requirements.

[0034] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals has a through hole in the middle of the vertical plate of the left-end inverted T-shaped bracket 4.6 for the test fluid to enter and exit. The through hole connects the pressure stabilizing tank 4.9 and the safety breakaway valve 7 under test.

[0035] The base frame is a welded structure of channel steel and steel plate, which has corresponding strength. Except for the pressurization device Bw and the high-resolution image measurement and simulation optimization analysis system, the other components are installed and fastened on it by bolts and slide rails. The right-end bracket assembly has sliding / rotating / locking functions and is mounted on the top of the base frame via a slide rail; The right end barrel is fixed to the top of the dovetail groove bottom plate by bolts. A grooved platform for placing the right end bearing is provided above it. Symmetrical slots are opened in the middle of the platform so that the right end threaded round bar can pass through and rotate 100°. The right-end threaded round bar is inserted into the symmetrically opened rotating slot in the middle of the right end barrel and is threadedly connected to the right-end stepped shaft blind plate. This serves to fix and prevent the right-end stepped shaft blind plate from flying out, and can rotate 100° together with the right-end stepped shaft blind plate. The right-end bearing is mounted on the grooved platform above the right-end barrel body and mechanically engages with the right-end stepped shaft blind plate. The right-end stepped shaft blind plate is in close contact with the inner ring of the right-end bearing through its upper shoulder, pressing the right-end bearing and vertically inserting the stepped shaft part into the right-end barrel. The blind plate part is placed outside the right-end barrel and can rotate 100° with the right-end threaded round bar. Symmetrical positioning holes are opened on the flange of the blind plate part, which, together with the positioning pin, can lock the rotation of the stepped shaft blind plate. The right-end inverted T-shaped bracket is bolted to the upper part of the right-end stepped shaft blind plate and is used to fix the end flange of the safety shut-off valve under test. It can rotate 100° with the right-end stepped shaft blind plate. The right-end elasto-plastic anti-collision buffer pad is placed inside the symmetrically opened slots in the middle of the barrel, allowing the threaded bar to pass through and rotate 100°. It is used for energy release and component protection during the rotation of the threaded bar in the instantaneous impact test, preventing collision damage. The high-frequency high-pressure pulse air cannon is a device that provides instantaneous impact energy to simulate the instantaneous radial shear force generated by the sudden drag of the tested safety pull-off valve. It has an impact energy effect similar to that generated by a bomb explosion and has the function of providing impact energy at high frequency, high pressure and high instantaneous speed. It includes a high-speed thrust release device and a high-frequency high-pressure pulse triggering device. The high-speed thrust release device is a device that can quickly or instantaneously output thrust or impact energy under the triggering of a high-frequency high-voltage pulse triggering device. During the test, it can be installed on the base frame and aligned with the middle or end of the safety break valve under test as needed. The high-frequency high-voltage pulse triggering device provides a rapid triggering function for the high-speed thrust release device.

[0036] The left end bracket assembly has a rotation / locking function and is mounted on top of the base frame; The left end base plate is fixedly connected to the top of the base frame by bolts; The left-end inverted T-shaped bracket is bolted to the top of the left-end stepped shaft blind plate and is used to fix the end flange of the safety shut-off valve under test. It can rotate 100° with the left-end stepped shaft blind plate. A through hole is opened in the middle of the vertical plate of the left-end inverted T-shaped bracket to allow the test fluid to enter and exit. The functions, structures and designs of the left end barrel, left end threaded round bar, left end bearing, left end stepped shaft blind plate, and left end elasto-plastic anti-collision buffer pad are completely consistent with the corresponding components in the right end functional support assembly, and will not be described in detail. The first manual valve and the second manual valve are installed on the top and side of the pressure stabilizing tank, respectively, and are used for venting and liquid injection. The pressure sensor is installed between the pressure stabilizing tank and the first manual valve on the side, and is used to monitor the pressure inside the tank in real time. The pressure stabilizing tank is installed outside the inverted T-shaped bracket on the left end, providing pressure holding and stabilizing function for the safety break valve under test during the test process; The pressure gauge is installed above the pressure stabilizing tank for monitoring the pressure inside the tank; The pressurization device Bw is connected to a manual valve installed on the side of the pressure tank via a pressure hose. The pressure hose uses a high-pressure quick-connect interface for easy loading and unloading. The high-resolution image measurement and simulation optimization analysis system is used for full strain field image measurement and simulation optimization analysis of radial shear force (including instantaneous radial shear force) of the tested pull-off valve instantaneous impact fracture, shear pin or fracture bolt fracture. It records and analyzes the fracture force value and stress-strain process value, key parameters of internal pressure change of the tested product in real time. It includes the high-resolution image measurement and simulation optimization analysis data processing center MatchID-DIS, signal synchronous triggering and acquisition device SSTC, and high-frequency high-resolution industrial camera. The high-resolution image measurement and simulation optimization analysis data processing center is a computer system equipped with high-resolution image measurement and simulation optimization analysis data processing software. It has the comprehensive function of real-time recording of internal pressure changes, fracture force values ​​and key numerical parameters of stress-strain process of the tested product, as well as full strain field image measurement and analysis. The signal synchronization triggering and acquisition device is used to connect the high-frequency high-resolution industrial camera and the high-resolution image measurement and simulation optimization analysis data processing center, and plays the role of a bridge for synchronous signal triggering, acquisition, transmission and control. The high-frequency, high-resolution industrial camera is connected to the signal synchronization triggering and acquisition device, the high-frequency, high-resolution industrial camera and the high-resolution image measurement and simulation optimization analysis data processing center. It receives synchronous signal triggering and high-frequency acquisition and captures the parameters of the impact-deformation-fracture process of the tested product and feeds them back to the high-resolution image measurement and simulation optimization analysis data processing center in real time. During the test, the camera can be focused on the key parts of the shear pin or the fracture bolt as needed. The safety break valve under test is the product under test, installed between the right end bracket assembly and the left end bracket assembly; The anti-collision buffer bracket includes an elastic-plastic buffer block and an L-shaped bracket, which are mounted on the base frame above the middle of the parallel slide rail travel end; The elastic-plastic buffer block is installed in front of the L-shaped bracket. When the end impact test is conducted, the safety break valve under test is subjected to instantaneous impact, and the shear pin or the break bolt breaks, causing the right end of the safety break valve under test to slide along the slide rail with the right end bracket assembly, thus playing the role of stopping the sliding of the above-mentioned components, releasing energy and providing buffer protection. The L-shaped bracket is installed behind the elastic-plastic buffer block and is firmly connected to the base frame, providing strength support. The slide rail is designed as a parallel double-row slide rail structure with an X-shaped cross-section. It has the function of preventing the sliding block from flying out during the movement process and has a displacement locking function. It is installed on the upper right of the base frame and cooperates with the right end support assembly to provide a reliable channel for the sliding of the right end support assembly.

[0037] A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals includes two fracture test circuits: a central high-speed radial impact fracture test and an end high-speed radial impact fracture test.

[0038] During the high-speed radial impact fracture test in the middle section, first remove the positioning pins between the right end barrel 2.2 and the right end stepped shaft blind plate 2.5, and between the left end barrel 4.2 and the left end stepped shaft blind plate 4.5, so that it can rotate smoothly to release energy when the safety break valve under test breaks under instantaneous force in the middle section. Then lock the sliding of the slide rail 9 and the right end support assembly 2. Then connect the safety break valve 7 under test between the right end support assembly 2 and the left end support assembly 4, so that the safety break valve 7 is in a radial state with no initial load or negligible load. Fix the high-speed thrust release device 3.1 of the high-frequency high-pressure pulse air cannon 3 to the base frame 1 and align it with the middle of the safety break-off valve 7 under test: (e.g.) Figure 1 China F r Position and adjust the distance. Focus the high-frequency, high-resolution industrial camera 6.3 on the middle of the tested safety break-off valve 7 to capture the entire breakage process from all angles, enabling image measurement and simulation optimization analysis; Connect and debug the high-resolution image measurement and simulation optimization analysis system 6, as well as the pressure sensor 4.8, the pressurization device 5, and the high-frequency high-pressure pulse triggering device 3.2, and prepare for synchronous data and image transmission, control and processing; Inject liquid and pressurize the installed test break valve 7. First, connect the pressurizing device 5 to the end of the first manual valve 4.7 with a pressure hose. Open the first manual valve 4.7 and the second manual valve 4.10 and start the pressurizing device 5. When liquid overflows from the second manual valve 4.10, close the second manual valve 4.10. Continue to pressurize to the specified test pressure, then close the first manual valve 4.7 and remove the pressure hose and pressurizing device 5. The high-resolution image measurement and simulation optimization analysis system 6 controls the operation of the high-frequency high-voltage pulse air cannon 3 remotely or locally, simultaneously recording images and data and performing simulation optimization analysis. This generates an instantaneous impact force, causing the shear pin or breakage bolt at the middle flange of the tested safety break-off valve 7 to break. Consequently, both ends of the safety break-off valve 7 rotate along the movement trajectories of the right threaded round bar 2.3 of the right end support assembly 2 and the left threaded round bar 4.3 of the left end support assembly 4. Figure 2 As shown, energy release is completed and stops when the right-end elasto-plastic anti-collision buffer pad 2.7 and the left-end elasto-plastic anti-collision buffer pad 4.12 are contacted.

[0039] During the high-speed radial impact fracture test at the end, positioning pins are placed between the right end barrel 2.2 and the right end stepped shaft blind plate 2.5, and between the left end barrel 4.2 and the left end stepped shaft blind plate 4.5 to fix them in place, so as to prevent the right end support assembly 2 and the left end support assembly 4 from rotating. Release the sliding lock between the slide rail 9 and the right end bracket assembly 2, allowing the latter to slide freely under force; connect the safety break valve 7 to be tested between the right end bracket assembly 2 and the left end bracket assembly 4, so that the safety break valve 7 is in a radial state with no initial load or negligible load; fix the high-speed thrust release device 3.1 of the high-frequency high-pressure pulse air cannon 3 to the base frame 1 and align it with the end of the safety break valve 7 to be tested, such as... Figure 1 China F r Position and adjust the distance; focus the high-frequency, high-resolution industrial camera 6.3 on the middle of the tested safety break-through valve 7 to capture the entire breakage process from all angles, enabling image measurement and simulation optimization analysis; connect and debug the high-resolution image measurement and simulation optimization analysis system 6, as well as the pressure sensor 4.8, pressurizing device 5, and high-frequency high-pressure pulse triggering device 3.2, and prepare for synchronous data and image transmission, control, and processing; inject liquid and pressurize the installed tested break-through valve 7, first connecting the pressurizing device 5 to the end of the first manual valve 4.7 with a pressure hose, opening the first manual valve 4.7 and the second manual valve 4.10 and starting the pressurizing device 5; when liquid overflows from the second manual valve 4.10, close the second manual valve 4.10, continue pressurizing to the specified test pressure, then close the first manual valve 4.7, and remove the pressure hose and pressurizing device 5; The high-resolution image measurement and simulation optimization analysis system 6 controls the operation of the high-frequency high-voltage pulse air cannon 3 remotely or locally, and simultaneously records images and data and performs simulation optimization analysis. This generates an instantaneous impact force on the end of the safety break valve 7, causing the shear pin or break bolt at the middle flange of the safety break valve 7 to break. This causes the right end component of the safety break valve 7 to slide along the slide rail 9 with the right end support assembly 2 until it contacts the elastic-plastic buffer block 8.1 of the anti-collision buffer bracket 8 at the end of the slide rail, after which the energy is released and the operation stops.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dual-position radial fracture test system for a safety breakaway valve used in petrochemicals, comprising a base frame (1), a right-end support assembly (2), a left-end support assembly (4), a high-frequency high-pressure pulse air cannon (3), a pressurization device (5), a high-resolution image measurement and simulation optimization analysis system (6), and a slide rail (9), characterized in that: The left end support assembly (4) is fixedly provided on the upper left side of the base frame (1), and the slide rail (9) is provided on the upper right side of the base frame (1). The lower end of the right end support assembly (2) is fitted on the slide rail (9). A high-frequency high-pressure pulse air cannon (3) is provided in the middle of the upper end of the base frame (1) and moves along the upper end between the right end support assembly and the left end support assembly. A pressurizing device (5) is connected to the left end bracket assembly (4). The upper end of the right end bracket assembly (2) and the left end bracket assembly (4) is provided with the safety break valve (7) under test. The shooting port of the high-resolution image measurement and simulation optimization analysis system is placed on the moving bracket and can always focus on the break test point of the safety break valve under test according to the test requirements.

2. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 1, characterized in that: The right end support assembly includes a dovetail groove base plate (2.1), a right end barrel body (2.2), a right end threaded head round bar (2.3), a right end bearing (2.4), a right end stepped shaft blind plate (2.5), and a right end inverted T-shaped support (2.6). The dovetail groove base plate (2.1) is connected to the slide rail (9) mounted on the base frame (1). The right end barrel body (2.2) is bolted to the top of the dovetail groove base plate (2.1). A grooved platform for placing the right end bearing (2.4) is provided on the top of the right end barrel body (2.2). A 100° rotating circular hole is symmetrically opened in the middle of the right end barrel body (2.2). The groove, a 100° rotating circular hole groove, is used for the right end threaded head round bar (2.3) to pass through and connect with the right end stepped shaft blind plate (2.5) and rotate. The upper shoulder of the right end stepped shaft blind plate (2.5) presses against the inner ring of the right end bearing (2.4) and vertically inserts the right end stepped shaft part into the right end barrel (2.2). The blind plate part of the right end stepped shaft blind plate is placed outside the right end barrel (2.2) and fixedly installed with the right end inverted T-shaped bracket (2.6) for connecting one end flange of the safety break valve (7) under test. The right end inverted T-shaped bracket (2.6) rotates and is positioned together with the right end stepped shaft blind plate (2.5).

3. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 2, characterized in that: The high-frequency high-pressure pulse air gun (3) includes a high-speed thrust release device (3.1) and a high-frequency high-pressure pulse triggering device (3.2). The high-speed thrust release device (3.1) is placed on the base frame (1) and aligned with the tested part of the safety break valve (7). The high-frequency high-pressure pulse triggering device (3.2) is connected to the high-speed thrust release device (3.1). The high-speed thrust release device (3.1) outputs under the signal triggering of the high-frequency high-pressure pulse triggering device (3.2). The high-frequency high-pressure pulse triggering device (3.2) is connected to the high-resolution image measurement and simulation optimization analysis system (6). The high-resolution image measurement and simulation optimization analysis system (6) provides remote synchronous triggering signals and collects impact energy and thrust parameters.

4. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 3, characterized in that: The left end support assembly (4) includes a left end base plate (4.1), a left end barrel body (4.2), a left end threaded round bar (4.3), a left end bearing (4.4), a left end stepped shaft blind plate (4.5), a left end inverted T-shaped bracket (4.6), a first manual valve (4.7), a second manual valve (4.10), a pressure sensor (4.8), a pressure stabilizing tank (4.9), and a pressure gauge (4.11). The left end base plate (4.1) is fixed to the left side of the base frame (1). Above, the left end barrel (4.2) is bolted to the top of the left end base plate (4.1). The left end barrel (4.2) has a grooved platform for placing the left end bearing (4.4). A 100° rotating circular hole slot is symmetrically opened in the middle of the left end barrel (4.2). The 100° rotating circular hole slot is used for the left end threaded head round bar (4.3) to pass through and connect with the left end stepped shaft blind plate (4.5) and rotate. The upper shoulder of the left end stepped shaft blind plate (4.5) presses against the left end bearing. (4.4) Inner ring, and vertically insert the left-end stepped shaft part into the left-end barrel (4.2), the blind plate part of the left-end stepped shaft blind plate is fixedly installed outside the left-end barrel (4.2) for connecting the flange of the other end of the safety break valve (7) under test, the left-end inverted T-shaped bracket (4.6), the left-end inverted T-shaped bracket (4.6) rotates and is positioned together with the left-end stepped shaft blind plate (4.5); the pressure tank (4.9) is placed on the outside of the upper end of the left-end inverted T-shaped bracket (4.6); the first manual valve (4.7) for fluid medium switching and the second manual valve (4.10) for venting are respectively placed on the side branch and the top of the pressure tank (4.9); the pressure sensor (4.8) for transmitting pressure signals to the high-resolution image measurement and simulation optimization analysis system in real time is placed between the first manual valve (4.7) and the pressure tank (4.9); the pressure gauge (4.11) for on-site test pressure monitoring is located on the top of the pressure tank (4.9).

5. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 2, characterized in that: The slide rail (9) is a parallel double-row slide rail with an X-shaped cross section. It is matched with the dovetail groove of the bottom plate (2.1) and has a displacement locking structure.

6. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 5, characterized in that: The slide rail end is provided with an anti-collision buffer bracket (8). The anti-collision buffer bracket (8) includes an elastic-plastic buffer block (8.1) and an L-shaped bracket (8.2). The anti-collision buffer bracket (8) is placed at the middle position of the displacement endpoint of the parallel double-row slide rail. The elastic-plastic buffer block (8.1) is fixedly installed on the front side of the L-shaped bracket (8.2).

7. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 4, characterized in that: A right-end elasto-plastic anti-collision buffer pad (2.7) is symmetrically arranged at the end of the 100° rotating circular groove of the right end barrel (2.2); a left-end elasto-plastic anti-collision buffer pad (4.12) is symmetrically arranged at the end of the 100° rotating circular groove of the left end barrel (4.2).

8. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 5, characterized in that: The booster device (5) is connected to the first manual valve (4.7) via a high-pressure quick connector and a pressure hose to provide the test fluid medium and pressure for the product under test, and communicates with the high-resolution image measurement and simulation optimization analysis system (6) to realize remote booster control.

9. The dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 1, characterized in that: The high-resolution image measurement and simulation optimization analysis system (6) includes a high-resolution image measurement and simulation optimization analysis data processing center (6.1), a signal synchronous triggering and acquisition device (6.2), and a high-frequency high-resolution industrial camera (6.3). The high-resolution image measurement and simulation optimization analysis data processing center (6.1) is synchronously interconnected with the signal synchronous triggering and acquisition device (6.2) and the high-frequency high-resolution industrial camera (6.3), and communicates synchronously with the pressure sensor (4.8), the high-frequency high-pressure pulse triggering device (3.2), and the pressurization device (5). It is used for full strain field image measurement and simulation optimization analysis of the radial shear force of the instantaneous impact fracture of the tested pull-off valve, and records and analyzes the fracture force value, stress-strain process value, internal pressure change of the tested product and other key parameters in real time. The signal synchronous triggering and acquisition device (6.2) provides synchronous triggering signals to the high-frequency high-resolution industrial camera (6.3) and receives the feedback information. The high-frequency high-resolution industrial camera (6.3) is aligned with the tested part of the safety pull-off valve (7) according to the test requirements.

10. A dual-position radial fracture test system for a safety breakaway valve for petrochemical applications according to claim 4, characterized in that: A through hole for the test fluid to enter and exit is opened in the middle of the vertical plate of the left-end inverted T-shaped bracket (4.6). The through hole connects the pressure stabilizing tank (4.9) and the safety break valve (7) under test.

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