Fatigue test bench and fatigue test system of pressure-bearing template

Abstract

The utility model discloses a fatigue test bench and a fatigue test system of a pressure-bearing template, comprising a main support and frameworks, the two frameworks respectively fix two templates to be tested on two sides of the main support, a first sealing ring is arranged between the main support and the frameworks, and a second sealing ring is arranged between the main support and the frameworks. A second sealing ring is arranged between the framework and the template to be tested, the main support, the framework and the template to be tested form a closed cavity, and the main support comprises a supporting frame, a base used for supporting the supporting frame and a through hole formed in the supporting frame and used for communicating the closed cavity with the outside. The supporting frame is vertically arranged on the ground through the base, so that the template to be tested is vertically arranged; the device is simple in structure, can verify the fatigue life of the pressure-bearing template, and also can verify the ultimate pressure-bearing capability of a welding seam and a sealing element.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure chambers, in particular to a fatigue test bench for a pressure-bearing template. In addition, the utility model also relates to a fatigue test system comprising the fatigue test bench for the pressure-bearing template. Background Art

[0002] As the Qinghai-Tibet Plateau is gradually developed, people at low altitudes find it difficult to adapt to work and life in the low-pressure and low-oxygen environment. In order to improve the harsh local environment, many oxygen chambers, pressure buildings, pressure chambers, etc. have been developed one after another. These increase the atmospheric pressure and oxygen partial pressure in the local space, making it easier for the human body to absorb oxygen and recover physical strength, thereby continuously improving the human body's ability to adapt to the low-pressure and low-oxygen environment of the plateau.

[0003] Existing oxygen chambers, pressure-bearing buildings, and pressure chambers are subject to repeated inflation, pressure stabilization, and deflation during actual use. This repeated inflation and deflation process will cause fatigue to the pressure-bearing formwork, welds, bolts, glass, seals, and other components on the corresponding equipment, affecting the structural safety and sealing effect, and posing safety hazards in long-term use. Therefore, it is necessary to design a test bench for verifying the fatigue life of the pressure-bearing formwork. Utility Model Content

[0004] The utility model provides a fatigue test bench and a fatigue test system for a pressure-bearing template, which can verify the fatigue life of the pressure-bearing template and the ultimate pressure-bearing capacity of welding seams and sealing parts.

[0005] According to one aspect of the utility model, a fatigue test bench for a pressure-bearing template is provided, comprising a main support and a skeleton, wherein the two skeletons respectively fix two templates to be tested on both sides of the main support, a first sealing ring is arranged between the main support and the skeleton, and a second sealing ring is arranged between the skeleton and the template to be tested, the main support, the skeleton and the template to be tested form a closed cavity, the main support comprises a support frame, a base for supporting the support frame and a through hole opened on the support frame for connecting the closed cavity with the outside world, and the support frame is vertically arranged on the ground through the base so that the template to be tested is arranged vertically.

[0006] Furthermore, the skeleton includes a mounting frame and a vertical plate vertically arranged on the mounting frame, and a second corner support is arranged on the vertical plate and the mounting frame.

[0007] Furthermore, a crossbeam is arranged on the installation frame.

[0008] Furthermore, a test bench pressure gauge and a test bench safety valve are arranged on the support frame.

[0009] Furthermore, a test bench pressure sensor is arranged on the support frame.

[0010] Furthermore, a test bench temperature sensor is arranged on the support frame.

[0011] Furthermore, an automatic drain valve of the test bench is arranged on the support frame.

[0012] Furthermore, a glass window is arranged on the template to be tested.

[0013] According to another aspect of the utility model, a fatigue testing system for a pressure-bearing formwork is also provided, which includes the above-mentioned fatigue testing bench for the pressure-bearing formwork, and also includes an air compression mechanism, a cold dryer and a connecting pipeline. The air compression mechanism and the cold dryer, and the cold dryer and the fatigue testing bench for the pressure-bearing formwork are connected through a connecting pipeline, and a one-way valve is arranged on the connecting pipeline.

[0014] Furthermore, it also includes a laser displacement sensor for monitoring the deformation amount of the template to be measured.

[0015] The utility model has the following beneficial effects:

[0016] The utility model discloses a fatigue test bench for a pressure-bearing template, wherein the support frame of the main support is a square cylinder structure, and the support frame is vertically placed or installed on the ground through two bases, so that the template to be tested is placed vertically, and the gravity is perpendicular to the pressure-bearing direction of the template to be tested, thereby avoiding the interference of the self-generated gravity of the template to be tested; during assembly, the template to be tested is first fixed on the skeleton, and the skeleton and the template to be tested are sealed by a second sealing ring, and then the assembled skeleton and the template to be tested are integrally assembled at two openings of the support frame, and the skeleton and the support frame are sealed by a first sealing ring, thereby forming a closed cavity; during testing, compressed gas is transported into the closed cavity through an air source connected by a through hole to increase the pressure, and the exhaust valve connected by the through hole is used to exhaust and reduce the pressure, and the closed cavity is repeatedly inflated, pressurized, and exhausted, which can not only verify the fatigue life of the template to be tested, but also can be used to verify the ultimate pressure-bearing capacity of welds and seals; its structure is simple, the same or different pressure-bearing templates can be selected for testing on both sides of the support frame, and can be intuitively compared and observed, which can improve the test efficiency.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of a fatigue test bench for a pressure-bearing template in a preferred embodiment of the utility model;

[0020] Figure 2 This is a structural schematic diagram of the main support of the preferred embodiment of the utility model;

[0021] Figure 3 It is a schematic structural diagram of a skeleton of a preferred embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a template to be tested in a preferred embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a fatigue testing system of a preferred embodiment of the utility model.

[0024] Legend:

[0025] 100, template to be tested; 101, glass window; 102, reinforcing rib; 103, hanging screw; 1, muffler; 2, exhaust pneumatic ball valve; 3, exhaust stop valve; 4, laser displacement sensor; 5, test bench safety valve; 6, fatigue test bench; 61, main support; 611, support frame; 612, base; 6121, bottom plate; 6122, column; 6123, first angle support; 613, through hole; 62, frame; 621, installation frame; 622, vertical plate; 623, second angle support Support; 624, crossbeam; 625, bolt holder; 63, first sealing ring; 64, second sealing ring; 7, one-way valve; 8, air inlet pneumatic ball valve; 9, connecting pipeline; 10, gas tank safety valve; 11, gas tank pressure gauge; 12, gas tank; 13, fan; 14, gas tank drain solenoid valve; 15, pressure reducing valve; 16, cold dryer; 17, test bench pressure gauge; 18, test bench pressure sensor; 19, test bench temperature sensor; 20, test bench automatic drain valve; 21, manual exhaust ball valve. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0027] Please also read Figures 1 to 5The fatigue test bench of the pressure-bearing template of the present embodiment includes a main support 61 and a skeleton 62. The two skeletons 62 fix the two templates 100 to be tested on both sides of the main support 61 respectively. A first sealing ring 63 is arranged between the main support 61 and the skeleton 62, and a second sealing ring 64 is arranged between the skeleton 62 and the template 100 to be tested. The main support 61, the skeleton 62 and the template 100 to be tested form a closed cavity. The main support 61 includes a support frame 611, a base 612 for supporting the support frame 611, and a plurality of through holes 613 opened on the support frame 611 for connecting the closed cavity with the outside world. The support frame 611 is vertically arranged on the ground through the base 612, so that the template 100 to be tested is arranged vertically.

[0028] In the fatigue test bench of the pressure-bearing template of the present embodiment, the support frame 611 of the main support 61 is a square cylinder structure, and the support frame 611 is vertically placed or installed on the ground through two bases 612, so that the template 100 to be tested is placed vertically, and the gravity is perpendicular to the pressure-bearing direction of the template 100 to be tested, thereby avoiding the interference of the self-generated gravity of the template 100 to be tested; during assembly, the template 100 to be tested is first fixed on the skeleton 62, and the skeleton 62 and the template 100 to be tested are sealed by the second sealing ring 64, and then the assembled skeleton 62 and the template 100 to be tested are integrally assembled at the two openings of the support frame 611, and the skeleton 62 and the support frame 611 are sealed by the first sealing ring 63, thereby forming a closed cavity; during testing, the through hole 613 is connected to the support frame 611, and ... The air source delivers compressed gas to the closed cavity to increase the pressure, and the exhaust valve connected to the through hole 613 is used to exhaust and reduce the pressure. The closed cavity is repeatedly inflated, pressurized, and exhausted, which can not only verify the fatigue life of the template 100 to be tested, but also can be used to verify the ultimate pressure bearing capacity of welds and seals; its structure is simple, and the same or different pressure-bearing templates can be selected on both sides of the support frame 611 for testing, and can be compared and observed intuitively, which can improve the test efficiency; it can be understood that the number of bases 612 can also be one, three or more, which can be increased or decreased according to the actual use needs; the support frame 611 can also be a cylindrical or multi-prism cylindrical structure, and the shape of the support frame 611 and / or the skeleton 62 can be adjusted accordingly according to the shape of the template 100 to be tested. Optionally, a sealing ring is arranged between the template 100 to be tested and the support frame 611, which can further improve the airtightness of the closed cavity. Optionally, the base 612 includes a bottom plate 6121 for contacting the ground, and a column 6122 for connecting the support frame 611 and the bottom plate 6121. The bottom plate 6121 can increase the contact area, improve stability, and reduce vibration of the main support 61. Optionally, a first angle support 6123 is arranged between the bottom plate 6121 and the column 6122 and / or between the column 6122 and the support frame 611.

[0029] In this embodiment, the skeleton 62 includes a mounting frame 621 and a vertical plate 622 vertically arranged on the mounting frame 621. The vertical plate 622 and the mounting frame 621 are provided with a second corner support 623. The vertical plate 622 is arranged between the first sealing ring 63 and the second sealing ring 64 and is supported by the second corner support 623. The strength of the mounting frame 621 can be improved to prevent deformation of the mounting frame 621 and leakage of the closed cavity, thereby providing a stable testing environment for the fatigue test bench.

[0030] In this embodiment, a crossbeam 624 is arranged on the mounting frame 621, which can increase the strength of the mounting frame 621 on the one hand, and can be used as a holding position on the other hand to facilitate disassembly and assembly by operators.

[0031] In this embodiment, a bolt holder 625 is arranged on the mounting frame 621, and a hanging screw 103 adapted to the bolt holder 625 is arranged on the back of the template 100 to be tested. The hanging screw 103 is tightly connected to the bolt holder 625 by bolts, and the whole can be hoisted to the main support 61 for assembly. The structure is simple and the connection is firm.

[0032] In this embodiment, a test bench pressure gauge 17 and a test bench safety valve 5 are arranged on the support frame 611. The test bench pressure gauge 17 facilitates direct observation of the air pressure value in the closed cavity, and the test bench safety valve 5 is used to limit the maximum pressure value in the closed cavity.

[0033] In this embodiment, a test bench pressure sensor 18 is arranged on the support frame 611 to detect the pressure value on the template 100 to be tested.

[0034] In this embodiment, a test bench temperature sensor 19 is arranged on the support frame 611 to detect the temperature value of the template 100 to be tested.

[0035] In this embodiment, an automatic drain valve 20 of the test bench is arranged on the support frame 611 to drain the accumulated water in the closed cavity.

[0036] In this embodiment, a glass window 101 is arranged on the template to be tested 100, so that the fatigue life of the glass window can be verified. Optionally, a reinforcing rib 102 is arranged on the back of the template to be tested 100.

[0037] The fatigue test system of the pressure-bearing formwork of the present embodiment includes the fatigue test bench 6 of the pressure-bearing formwork, and also includes an air compression mechanism, a cold dryer 16 and a connecting pipeline 9. The air compression mechanism and the cold dryer 16, and the cold dryer 16 and the fatigue test bench of the pressure-bearing formwork are connected through the connecting pipeline 9. A one-way valve 7 is arranged on the connecting pipeline 9. The air compression mechanism includes a fan 13 and a gas tank 12. A gas tank safety valve 10, a gas tank pressure gauge 11 and a gas tank drainage solenoid valve 14 are arranged on the gas tank 12. A pressure reducing valve 15 is arranged on the connecting pipeline 9 between the gas tank 12 and the cold dryer 16. Optionally, the connecting pipeline 9 is a hose to prevent the air compression mechanism from transmitting vibration to the fatigue test bench 6.

[0038] The compressed air generated by the fan 13 enters the gas tank 12 for storage. The working pressure of the gas tank 12 is 6-8 bar. When the internal pressure of the gas tank 12 is lower than 6 bar, inflation begins, and when it is higher than 8 bar, inflation stops. A gas tank drainage solenoid valve 14 is arranged at the bottom of the gas tank 12, and the compressed air stored in the gas tank 12 is used for the inflation and deflation test of the fatigue test bench 6. During the inflation process of the fatigue test bench 6: the air intake pneumatic ball valve 8 is opened, the gas tank 12 is exhausted, and the air is dewatered and cooled by the cold dryer 16. When the internal pressure of the fatigue test bench 6 reaches the set value, the air intake pneumatic ball valve 8 is closed to maintain the pressure for a period of time. During the exhaust process of the fatigue test bench 6: after the pressure maintenance of the fatigue test bench 6 is completed, the exhaust pneumatic ball valve 2 is opened, and the compressed air in the fatigue test bench 6 is completely discharged into the atmosphere until the pressure difference is 0, and a complete inflation and deflation cycle test is completed. Repeated inflation, pressure maintenance, and exhaust in the closed cavity can not only verify the fatigue life of the template to be tested 100, but also can be used to verify the ultimate pressure bearing capacity of welds, glass windows, and seals.

[0039] In this embodiment, a laser displacement sensor 4 for monitoring the deformation of the template 100 to be tested is also included. The laser displacement sensor 4 can accurately measure the deformation of the template 100 to be tested, thereby quantifying the correspondence between the deformation of the pressure-bearing template and the overall leakage rate of the sealing chamber.

[0040] In this embodiment, an exhaust pneumatic ball valve 2 and / or an exhaust stop valve 3 are arranged on the support frame 611. Optionally, a muffler 1 is arranged at the end of the exhaust pipe connected to the through hole 613 to reduce noise. Optionally, a manual exhaust ball valve 21 is arranged on the support frame 611.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fatigue test bench for a pressure-bearing formwork, characterized in that: It comprises a main support (61) and a frame (62), wherein the two frames (62) respectively fix two templates to be tested (100) on both sides of the main support (61). A first sealing ring (63) is arranged between the main support (61) and the frame (62), a second sealing ring (64) is arranged between the frame (62) and the template to be tested (100), and the main support (61), the frame (62) and the template to be tested (100) form a closed cavity. The main support (61) comprises a support frame (611), a base (612) for supporting the support frame (611), and a through hole (613) provided on the support frame (611) for connecting the closed cavity with the outside world. The support frame (611) is arranged vertically on the ground through the base (612), so that the template (100) to be tested is arranged vertically.

2. The fatigue test bench for pressure-bearing formwork according to claim 1, characterized in that: The frame (62) comprises a mounting frame (621) and a vertical plate (622) vertically arranged on the mounting frame (621), and a second corner support member (623) is arranged between the vertical plate (622) and the mounting frame (621).

3. The fatigue test bench for the pressure-bearing formwork according to claim 2 is characterized in that: A crossbeam (624) is arranged on the installation frame (621).

4. The fatigue test bench for pressure-bearing formwork according to claim 1, characterized in that: The support frame (611) is provided with a test bench pressure gauge (17) and a test bench safety valve (5).

5. The fatigue test bench for pressure-bearing formwork according to claim 1, characterized in that: A test bench pressure sensor (18) is arranged on the support frame (611).

6. The fatigue test bench for pressure-bearing formwork according to claim 1, characterized in that: The support frame (611) is provided with a test bench temperature sensor (19).

7. The fatigue test bench for pressure-bearing formwork according to claim 1, characterized in that: The support frame (611) is provided with a test bench automatic drainage valve (20).

8. The fatigue test bench for pressure-bearing formwork according to claim 1, characterized in that: The template to be tested (100) is provided with a glass window (101).

9. A fatigue testing system, characterized in that: A fatigue test bench comprising a pressure-bearing formwork according to any one of claims 1 to 8, It also comprises an air compression mechanism, a cold dryer (16) and a connecting pipeline (9); the air compression mechanism and the cold dryer (16), and the cold dryer (16) and the fatigue test bench of the pressure-bearing template are connected via the connecting pipeline (9); a one-way valve (7) is arranged on the connecting pipeline (9).

10. The fatigue testing system according to claim 9, characterized in that: It also includes a laser displacement sensor (4) for monitoring the deformation amount of the template (100) to be tested.

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