Hydraulic fatigue test equipment for pressure vessel

Abstract

The utility model relates to the technical field of pressure test, and discloses a hydraulic fatigue test device for a pressure vessel, which comprises a test bed, one side of the outside of the test bed is fixedly connected with a vertical frame, the left side and the right side of the inside of the test bed are fixedly connected with output shafts, and the left side and the right side of the inside of each output shaft are slidably connected with a movable frame. A pressure mechanism is arranged in the test bench, a replacement mechanism is arranged in the test bench, the pressure mechanism comprises a hydraulic cylinder, the output end of the hydraulic cylinder is slidably connected with a connecting shaft, the bottom of the connecting shaft is fixedly connected with a baffle, and the top of the baffle is fixedly connected with a driving assembly. According to the utility model, by starting the cylinder, the cylinder drives the connecting rod II through the connecting rod I to fix the clamping block, so that stable clamping in the machining process of the hydraulic fatigue test of the pressure vessel can be realized, the sliding displacement of the pressure vessel during machining is prevented, and the machining precision and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure test technical field especially relates to a pressure vessel hydraulic fatigue test equipment. BACKGROUND

[0002] When pressure vessel hydraulic fatigue test, often use a kind of pressure vessel hydraulic fatigue test equipment is a kind of equipment specially used to simulate pressure vessel under actual working condition suffered hydraulic cyclic loading, test can bring many benefits, such as being able to accurately assess the fatigue life of pressure vessel, potential defects or weak links are found in advance to guarantee operation safety, optimize the design and manufacturing process of pressure vessel etc., use it mainly is to ensure the performance reliability and safety of pressure vessel under long-term hydraulic cyclic action.

[0003] Pressure vessel hydraulic fatigue test equipment, usually including preparation stage, such as equipment inspection, test piece installation and parameter setting;Then preloading is carried out to eliminate clearance and ensure uniform contact;Then according to the predetermined loading spectrum, cyclic loading is carried out, and key parameters such as pressure, temperature and displacement are monitored;Finally, after completing test, unload, check equipment state and data record and analysis.

[0004] Part of pressure vessel hydraulic fatigue test equipment device in prior art, at present, the equipment commonly used for pressure vessel performance detection on the market, mostly focus on static pressure test, only can test the pressure resistance of container under certain static pressure, it is difficult to simulate the dynamic pressure change that pressure vessel bears when actually running, cannot carry out hydraulic fatigue test to pressure vessel, and although some equipment can realize pressure fluctuation control to a certain extent, due to the limited pressure fluctuation range and frequency regulation ability, cannot simulate the complex hydraulic load that pressure vessel bears under different working conditions comprehensively, which leads to that the test result is greatly deviated from actual operation, cannot provide reliable basis for the design, manufacture and maintenance of pressure vessel, not only this, the existing equipment generally lacks accurate monitoring and control to each parameter in test process, it is difficult to guarantee the accuracy and repeatability of test data, greatly reduces the reference value of test result, therefore, a kind of pressure vessel hydraulic fatigue test equipment is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above shortcomings, the utility model provides a kind of pressure vessel hydraulic fatigue test equipment, aims at improving the problem that part of device in prior art cannot carry out hydraulic fatigue test to pressure vessel.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] A kind of pressure vessel hydraulic fatigue test equipment, including test table, the outside one side of the test table is fixedly connected with stand, the inside left and right sides of the test table are fixedly connected with output shaft, the inside left and right sides of the output shaft are slidably connected with moving frame, the inside of the test table is provided with pressure mechanism, the inside of the test table is provided with replacement mechanism;

[0008] The pressure mechanism includes hydraulic cylinder, the output end of the hydraulic cylinder is slidably connected with connecting shaft, the bottom of the connecting shaft is fixedly connected with baffle, the top of the baffle is fixedly connected with drive assembly, the outside of the drive assembly is fixedly connected with connecting rod one, the outside of the connecting rod one is fixedly connected with connecting plate, the outside of the connecting plate is fixedly connected with fixed rod, the outside of the fixed rod is slidably connected with follower rod, the outside of the follower rod is slidably connected with connecting rod two, the outside of the connecting rod two is slidably connected with clamping block, the outside of the clamping block is slidably connected with placement table, the outside of the hydraulic cylinder is fixedly connected in the outside of the moving frame;

[0009] As further description of the above technical solutions:

[0010] The replacement mechanism includes slide rail one, the inside of the slide rail one is provided with sliding groove, the outside left and right sides of the sliding groove are fixedly connected with limiting block, the outside left and right sides of the slide rail one are fixedly connected in the outside one side of the test table;

[0011] As further description of the above technical solutions:

[0012] The drive assembly includes cylinder, the outside of the cylinder is fixedly connected in the inside of the baffle, the outside of the connecting rod one is slidably connected in the outside of the cylinder;

[0013] As further description of the above technical solutions:

[0014] The inside of the sliding groove is slidably connected with sliding block, the outside one side of the sliding block is fixedly connected with slide rail two, the top of the slide rail two is fixedly connected in the bottom of the baffle;

[0015] As further description of the above technical solutions:

[0016] The outside one side of the test table is fixedly connected with linear slide rail, the outside of the linear slide rail is slidably connected with pneumatic sliding block, the top of the pneumatic sliding block is fixedly connected in the bottom of the baffle;

[0017] As further description of the above technical solutions:

[0018] The inside one side of the test table is fixedly connected with hydraulic testing machine, the outside one side of the hydraulic testing machine is fixedly connected with data display screen;

[0019] As a further description of the above technical solutions:

[0020] The outer side of the hydraulic testing machine is fixedly connected with an operation button, and the outer side of the hydraulic testing machine is fixedly connected with an adjusting knob.

[0021] As a further description of the above technical solutions:

[0022] The outer side of the hydraulic testing machine is fixedly connected with a start button, and the outer side of the hydraulic testing machine is fixedly connected with an emergency stop button.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1、 the utility model discloses, through starting the pneumatic cylinder, make the pneumatic cylinder drive connecting rod one movement, under the movement of connecting rod one, make connecting rod one drive the movement of both sides connecting plate through the pneumatic cylinder, make the fixed rod drive connecting rod two movement through the follower, make connecting rod two slide in the inside of the placing table through the clamping block, make the pneumatic cylinder drive connecting rod two fixed to the clamping block through connecting rod one, then can realize the stable clamping of pressure vessel hydraulic fatigue test in the processing, prevent its sliding displacement when processing, improve processing accuracy and efficiency.

[0025] 2、 the utility model discloses, through the baffle, make the baffle drive slide rail two slide, under the movement of slide rail two, make the sliding block slide in the inside of slide rail one, make the baffle drive pneumatic sliding block movement through the linear guide rail, when replacing mechanism works, can quickly replace another replacement mechanism, ensure that the replacement mechanism is always in the best working state, thereby improve the overall efficiency of work, also reduce the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of a pressure vessel hydraulic fatigue test equipment is provided for the utility model;

[0027] Figure 2 A structural schematic view of an upright frame of a pressure vessel hydraulic fatigue test equipment is provided for the utility model;

[0028] Figure 3 A structural schematic view of a clamping block of a pressure vessel hydraulic fatigue test equipment is provided for the utility model;

[0029] Figure 4 A structural schematic view of a sliding block of a pressure vessel hydraulic fatigue test equipment is provided for the utility model.

[0030] LEGEND:

[0031] 1, test bench; 2, stand; 3, output shaft; 4, moving frame; 5, hydraulic cylinder; 6, connecting shaft; 7, baffle; 8, cylinder; 9, connecting rod one; 10, connecting plate; 11, fixed rod; 12, follow-up rod; 13, connecting rod two; 14, clamping block; 15, placement table; 16, slide rail one; 17, sliding groove; 18, limiting block; 19, sliding block; 20, slide rail two; 21, linear slide rail; 22, pneumatic sliding block; 23, hydraulic testing machine; 24, data display screen; 25, operation button; 26, adjusting knob; 27, start button; 28, emergency stop button. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0033] Referring to Figures 1 to 2 , the utility model provides an embodiment: a kind of pressure vessel hydraulic fatigue test equipment, including test bench 1, the basic support structure of entire equipment is to ensure that it can withstand greater pressure and impact force without deformation during test, and the outer side of test bench 1 is fixedly connected with stand 2, provides installation position, simultaneously can be used as the support structure of operating platform, it is convenient for operator to carry out the debugging and monitoring of equipment, and the inside left and right sides of test bench 1 are fixedly connected with output shaft 3, and it is connected with the drive device hydraulic cylinder 5 in the inside of test bench 1, by the operation of hydraulic cylinder 5, output shaft 3 can realize linear motion, and provide power for the sliding of moving frame 4, and the inside left and right sides of output shaft 3 are slidably connected with moving frame 4, and it is load bearing pressure mechanism, and it is reciprocating linear motion along the direction of output shaft 3 under the action of pressure mechanism, to drive clamping block 14 to carry out fatigue test to pressure vessel, and the inside of test bench 1 is provided with pressure mechanism, and the inside of test bench 1 is provided with replacement mechanism;

[0034] Pressure mechanism includes hydraulic cylinder 5, and it is the power source of pressure mechanism, and piston motion is pushed by the pressure of hydraulic oil, to drive connecting shaft 6 to stretch out and draw back, the position of hydraulic cylinder 5 can be adjusted by the movement of moving frame 4, and the output end of hydraulic cylinder 5 is slidably connected with connecting shaft 6, and the power of hydraulic cylinder 5 is transmitted to baffle 7, so that it can move up and down, and the bottom of connecting shaft 6 is fixedly connected with baffle 7, and drive assembly and cylinder 8 are supported and fixed, and the power of hydraulic cylinder 5 is transmitted, and the top of baffle 7 is fixedly connected with drive assembly, and power is provided for the movement of connecting rod one 9, to drive subsequent connecting plate 10 and fixed rod 11 to move;

[0035] The connecting rod one 9 is fixedly connected outside the driving assembly, and power of the driving assembly is transmitted to the connecting plate 10, so that the connecting plate 10 can move. The telescopic movement of the connecting rod one 9 can be realized through the driving of the air cylinder 8. The connecting plate 10 is fixedly connected outside the connecting rod one 9. The connecting plate 10 and the fixed rod 11 can move together through the movement of the connecting rod one 9. The connecting plate 10 is fixedly connected outside the fixed rod 11. The fixed rod 11 provides support and guidance for the follow-up rod 12, so that the follow-up rod 12 can slide on the fixed rod 11. The follow-up rod 12 is slidably connected outside the fixed rod 11. The follow-up rod 12 transmits the movement between the fixed rod 11 and the connecting rod two 13, so that the connecting rod two 13 can move with the movement of the fixed rod 11.

[0036] The connecting rod two 13 is slidably connected outside the follow-up rod 12. The movement of the follow-up rod 12 is transmitted to the clamping block 14, so that the clamping block 14 can open and close. The connecting rod two 13 is slidably connected outside the clamping block 14. The clamping block 14 is used for clamping the components of the pressure container. The opening and closing of the clamping block 14 can be realized through the movement of the connecting rod two 13, so that the pressure container can be clamped and loosened. The clamping block 14 is slidably connected outside the placement table 15. The placement table 15 is used as a platform for placing the pressure container. The placement table 15 provides a stable support platform for the pressure container, so that the pressure container can be fixed during the test. The placement table 15 is slidably connected outside the clamping block 14. The pressure container on the placement table 15 can be clamped and loosened through the opening and closing of the clamping block 14. The hydraulic cylinder 5 is fixedly connected outside the moving frame 4.

[0037] The replacement mechanism includes a sliding rail one 16, which provides a sliding track for the sliding block 19 and guides the sliding block 19 to move linearly in the horizontal direction, so as to ensure the accuracy and stability of the movement direction of the sliding block 19 and avoid deviation or shaking of the sliding block 19 during movement, thereby ensuring the working precision of the entire replacement mechanism. The sliding rail one 16 is internally provided with a sliding groove 17 for accurately guiding and positioning the sliding block 19. When the sliding block 19 slides in the sliding rail one 16, the side wall of the sliding groove 17 can limit the movement range of the sliding block 19 to prevent it from deviating from the predetermined sliding track. At the same time, the bottom of the sliding groove 17 can support the sliding block 19 to keep it in a stable sliding state under the action of gravity.

[0038] The sliding groove 17 is fixedly connected with a limiting block 18 on the left and right sides outside the sliding groove 17. The limiting block 18 limits the movement range of the sliding block 19 to prevent the sliding block 19 from excessively sliding in the sliding rail one 16 and deviating from the predetermined track. When the sliding block 19 moves close to both ends of the sliding groove 17, the limiting block 18 can block the continuous movement of the sliding block 19, thereby protecting the replacement mechanism from being damaged. The sliding rail one 16 is fixedly connected on one side of the test bench 1 on the left and right sides outside the sliding rail one 16.

[0039] Reference Figures 2 to 3The driving assembly comprises a cylinder 8, the outer part of the cylinder 8 is fixedly connected to the inner part of the baffle 7, the outer part of the connecting rod one 9 is slidably connected to the outer part of the cylinder 8, the inner part of the sliding groove 17 is slidably connected with the sliding block 19, the sliding block 19 realizes stable sliding in the sliding rail one 16 and drives the sliding rail two 20 to move together, when the baffle 7 is subjected to external force, the force is transmitted to the sliding block 19 through the sliding rail two 20, so that the sliding block 19 slides in the sliding groove 17, meanwhile, the sliding block 19 can also bear certain radial force and axial force, so as to ensure the stability and reliability of the sliding rail two 20 during movement;

[0040] The outer part of the sliding block 19 is fixedly connected with the sliding rail two 20, the movement of the baffle 7 is transmitted to the sliding block 19, so that the sliding block 19 slides in the sliding rail one 16, when the baffle 7 is subjected to external force, the sliding rail two 20 moves together with the baffle 7, and the force is transmitted to the sliding block 19 through the connection with the sliding block 19, so that the sliding block 19 slides in the sliding rail one 16, the top of the sliding rail two 20 is fixedly connected to the bottom of the baffle 7;

[0041] The outer part of the test bench 1 is fixedly connected with a linear sliding rail 21, which provides a high-precision linear motion track for a pneumatic sliding block 22, when the pneumatic sliding block 22 moves on the linear sliding rail 21, the rolling body can roll on the guide rail surface, so that the movement of the pneumatic sliding block 22 is more stable and accurate, the linear sliding rail 21 can ensure the posture stability of the pneumatic sliding block 22 during movement, so as to avoid shaking or deviation, thereby improving the working efficiency and precision of the replacement mechanism, the outer part of the linear sliding rail 21 is slidably connected with the pneumatic sliding block 22, which produces linear motion under the action of compressed air, so as to realize the specific function of the replacement mechanism, when compressed air enters the air cavity, the pneumatic sliding block 22 will be subjected to the action of air pressure to generate thrust, so as to drive the baffle 7 to move, thereby meeting the needs of the replacement mechanism in different working stages, the top of the pneumatic sliding block 22 is fixedly connected to the bottom of the baffle 7.

[0042] Referring to Figures 3 to 4 The inner part of the test bench 1 is fixedly connected with a hydraulic testing machine 23, which delivers hydraulic oil to the hydraulic cylinder 5 through a hydraulic pump to provide the required pressure for the test, the outer part of the hydraulic testing machine 23 is fixedly connected with a data display screen 24, which displays various data of the hydraulic testing machine 23 in the test process in real time, so that the operator can timely understand the test state and result, the outer part of the hydraulic testing machine 23 is fixedly connected with an operation button 25, which is an important component for the operator to interact with the hydraulic testing machine 23, the operation button 25 can realize various basic operations of the testing machine, so as to facilitate the operator to identify and use;

[0043] The outer side of the hydraulic testing machine 23 is fixedly connected with an adjusting knob 26 for fine adjustment of some parameters of the hydraulic testing machine 23, such as test pressure, loading speed, etc.

[0044] Working principle: during the test, the internal driving device hydraulic cylinder 5 of the test bench 1 operates to drive the output shaft 3 to realize linear motion, thereby providing power for the reciprocating linear motion of the moving frame 4 in the direction of the output shaft 3; the hydraulic cylinder 5 drives the piston to move, thereby driving the connecting shaft 6 to extend and retract; the connecting shaft 6 drives the baffle 7 to move up and down; the driving assembly on the baffle 7 is driven by the air cylinder 8 to make the connecting rod one 9 extend and retract; the connecting rod one 9 drives the connecting plate 10 and the fixed rod 11 to move together; the fixed rod 11 provides support and guidance for the follow-up rod 12; the follow-up rod 12 slides on the fixed rod 11 and transmits the motion to the connecting rod two 13; the connecting rod two 13 drives the clamping block 14 to open and close, thereby realizing clamping and loosening of the pressure container placed on the placement table 15; the position of the hydraulic cylinder 5 can also be adjusted through the movement of the moving frame 4, so as to ensure that the equipment can carry out hydraulic fatigue test on the pressure container according to the requirements.

[0045] Firstly, the pneumatic slider 22 generates linear motion under the action of compressed air, thereby driving the baffle 7 to move; when the baffle 7 is subjected to external force, the force is transmitted to the sliding block 19 through the slide rail two 20, so that the sliding block 19 slides in the sliding groove 17; the sliding block 19 realizes stable sliding in the slide rail one 16 and drives the slide rail two 20 to move together; when the baffle 7 moves close to the two ends of the sliding groove 17, the limiting block 18 can block the continuous movement of the sliding block 19, thereby protecting the replacement mechanism from being damaged; at the same time, the sliding block 19 can also bear certain radial force and axial force, thereby ensuring the stability and reliability of the slide rail two 20 during the movement; when the replacement mechanism works, another replacement mechanism can be quickly replaced, so that the replacement mechanism is always in the best working state, thereby improving the overall work efficiency and reducing the maintenance cost.

[0046] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure vessel hydraulic fatigue testing apparatus comprising a test bed (1), characterised in that: The outside of the test bench (1) is fixedly connected with a stand (2), the inside of the test bench (1) is fixedly connected with an output shaft (3) on the left and right sides, the inside of the output shaft (3) is slidably connected with a moving frame (4) on the left and right sides, the inside of the test bench (1) is provided with a pressure mechanism, and the inside of the test bench (1) is provided with a replacement mechanism. The pressure mechanism comprises a hydraulic cylinder (5), the output end of the hydraulic cylinder (5) is slidably connected with a connecting shaft (6), the bottom of the connecting shaft (6) is fixedly connected with a baffle (7), the top of the baffle (7) is fixedly connected with a driving assembly, the outside of the driving assembly is fixedly connected with a connecting rod one (9), the outside of the connecting rod one (9) is fixedly connected with a connecting plate (10), the outside of the connecting plate (10) is fixedly connected with a fixed rod (11), the outside of the fixed rod (11) is slidably connected with a follow-up rod (12), the outside of the follow-up rod (12) is slidably connected with a connecting rod two (13), the outside of the connecting rod two (13) is slidably connected with a clamping block (14), the outside of the clamping block (14) is slidably connected with a placing table (15), and the outside of the hydraulic cylinder (5) is fixedly connected to the outside of the moving frame (4).

2. A pressure vessel hydraulic fatigue test apparatus according to claim 1, characterized by: The replacement mechanism comprises a sliding rail one (16), a sliding groove (17) is formed in the inside of the sliding rail one (16), the outside of the sliding groove (17) is fixedly connected with a limiting block (18) on the left and right sides, and the outside of the sliding rail one (16) is fixedly connected to the outside of the test bench (1) on one side.

3. The hydraulic fatigue test apparatus for a pressure vessel according to claim 1, characterized by: The driving assembly comprises a gas cylinder (8), and the outside of the gas cylinder (8) is fixedly connected to the inside of the baffle (7).

4. The hydraulic pressure fatigue test apparatus of claim 2, wherein: The inside of the sliding groove (17) is slidably connected with a sliding block (19), one side of the outside of the sliding block (19) is fixedly connected with a sliding rail two (20), and the top of the sliding rail two (20) is fixedly connected to the bottom of the baffle (7).

5. The hydraulic pressure fatigue test apparatus of claim 1, wherein: The outside of the test bench (1) is fixedly connected with a linear sliding rail (21), the outside of the linear sliding rail (21) is slidably connected with a pneumatic sliding block (22), and the top of the pneumatic sliding block (22) is fixedly connected to the bottom of the baffle (7).

6. The hydraulic pressure fatigue test apparatus of claim 1, wherein: One side of the inside of the test bench (1) is fixedly connected with a hydraulic pressure testing machine (23), and one side of the outside of the hydraulic pressure testing machine (23) is fixedly connected with a data display screen (24).

7. A pressure vessel hydraulic fatigue test apparatus according to claim 6, wherein: One side of the outside of the hydraulic pressure testing machine (23) is fixedly connected with an operation button (25), and one side of the outside of the hydraulic pressure testing machine (23) is fixedly connected with an adjusting knob (26).

8. A pressure vessel hydraulic fatigue test apparatus according to claim 6, wherein: One side of the outside of the hydraulic pressure testing machine (23) is fixedly connected with a start button (27), and one side of the outside of the hydraulic pressure testing machine (23) is fixedly connected with an emergency stop button (28).

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