Alloy casting air tightness experiment equipment

Abstract

The utility model provides alloy casting air tightness experiment equipment, which relates to the field of alloy casting experiment equipment, and comprises an equipment box body and a sensor located in the equipment box body, a placing boss is fixedly connected to the inner bottom wall of the equipment box body, and sealing limiting covers are attached to the two ends of the inner wall of the equipment box body. The top of the equipment box body is fixedly connected with a hydraulic air cylinder fixed to the top of the sealing limiting cover, a pressurizing assembly is arranged on the equipment box body and penetrates through the sealing limiting cover, a plurality of limiting assemblies are arranged at the bottom of the sealing limiting cover in the direction away from the pressurizing assembly, and the top of the sensor is movably connected to one limiting assembly. According to the alloy casting air tightness experiment equipment, the sensor is arranged at the bottom of the sealing limiting cover and is closer to the pressure applying point of the pressurizing assembly, the actual pressure change in the casting can be monitored more accurately in real time, the data accuracy is improved, and meanwhile potential pressure abnormity can be found in time.

Description

Technical Field

[0001] The utility model relates to the field of alloy casting experimental equipment, in particular to an alloy casting air tightness experimental equipment. Background Art

[0002] Airtightness test equipment is an instrument specially used to detect the sealing performance of various closed systems. This type of equipment simulates actual working conditions or specific pressure environments to inflate, maintain pressure, detect leaks, and other operations on the object being tested to determine whether there is a leak and the extent of the leak. Its working principle is to seal the object being tested with the test chamber, fill the chamber with gas at a certain pressure through a pressure source, close the inflation valve, enter a stable pressure state, monitor the change of pressure in the chamber over time, monitor the pressure change in the chamber, the gas leakage rate, or directly detect whether there is a leaking gas component in the environment through the detection element, so as to determine the airtightness of the object being tested. If the pressure is stable or no leaking gas is detected, it indicates that the airtightness of the object being tested is good; otherwise, there is a leakage problem.

[0003] In existing air tightness test equipment, the air pressure sensor is usually fixed on the inner wall of the equipment box. When the hydraulic cylinder drives the sealing limit cover to move downward to fit with the top of the alloy casting, in order to ensure the sealing of the experimental chamber, the sealing limit cover is in close contact with the inner wall of the equipment box. However, when facing smaller alloy castings, due to the shortened distance between the top of the casting and the air pressure sensor, the sealing limit cover may directly block the air pressure sensor during the downward movement, causing motion interference between the two, which not only affects the normal downward movement of the sealing limit cover, but may also cause physical damage to the air pressure sensor, affecting its measurement accuracy and even causing equipment failure.

[0004] Therefore, it is necessary to provide a new alloy casting airtightness test equipment to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides alloy casting air tightness test equipment.

[0006] The alloy casting air tightness test equipment provided by the utility model comprises an equipment box and a sensor located inside the equipment box, wherein the bottom wall of the equipment box is fixedly connected with a placement boss, both ends of the inner wall of the equipment box are fitted with sealing limit covers, the top of the equipment box is fixedly connected with a hydraulic cylinder fixed to the top of the sealing limit cover, a booster assembly is arranged on the equipment box, and the booster assembly passes through the sealing limit cover, a plurality of limit assemblies are arranged on the bottom of the sealing limit cover along a direction away from the booster assembly, and the top of the sensor can be movably connected to one of the limit assemblies.

[0007] Furthermore, the four corners of the equipment box are fixedly connected to long sliding rods, the four corners of the sealing limit cover slide along the outer walls of the four long sliding rods, a glass door is hinged on the front side of the equipment box, and a digital display screen for receiving sensor data is arranged on the outside of the equipment box.

[0008] Furthermore, the boosting component includes a gas boosting pump, which is fixedly connected to the top of the equipment box. The output end of the gas boosting pump extends into the interior of the equipment box and is fixedly connected to a boosting head, which passes through the center position of the sealing limit cover.

[0009] Furthermore, a pressure pipe is fixedly connected to the center position of the bottom of the sealing limit cover, and the pressure pipe is threadedly connected to the boost head. A rubber pad is also fixedly connected to the bottom of the sealing limit cover.

[0010] Furthermore, the limit assembly includes a limit bracket embedded in the bottom of the sealing limit cover and a telescopic part fixedly connected to the top of the sensor. The inner side walls of the limit bracket are respectively provided with a limit groove and a sliding groove, and the top of the telescopic part extends to the inside of the limit groove of the limit bracket.

[0011] Furthermore, the telescopic part includes a telescopic rod, the bottom of the telescopic rod is fixedly connected to the sensor, the top of the telescopic rod is fixedly connected to an oblique block, the outer wall of the telescopic rod is sequentially provided with a sliding block and a telescopic spring from bottom to top, and the two ends of the telescopic rod are respectively fixedly connected to the sliding block and the oblique block.

[0012] Furthermore, the outer side wall of the oblique block fits with the inner wall of the limiting groove of the limiting bracket, and the two ends of the sliding block are slidably connected to the inner wall of the sliding groove of the limiting bracket.

[0013] Compared with the related art, the alloy casting air tightness test equipment provided by the utility model has the following beneficial effects:

[0014] 1. The alloy casting air tightness test equipment, by arranging the sensor at the bottom of the sealing limit cover, closer to the pressure application point of the booster component, can more accurately and in real time monitor the actual pressure changes inside the casting, improve the accuracy of the data and detect potential pressure anomalies in time.

[0015] 2. The alloy casting air tightness test equipment can improve its applicability to different alloy castings by adjusting the stroke of the hydraulic cylinder when facing alloy castings of different heights. The sensor fixed at the bottom of the sealing limit cover will not hinder the stroke of the hydraulic cylinder, thereby improving its applicability to different alloy castings. For alloy castings of different diameters, the relative position between the casting and the booster assembly can be changed by replacing the limit assemblies at different positions to ensure that the booster gas can be evenly and effectively applied to the inside of the casting, thereby improving the adaptability and accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structural diagram of the alloy casting air tightness test equipment provided by the utility model;

[0017] Figure 2 A schematic diagram of the state structure of the alloy casting air tightness test equipment provided by the utility model;

[0018] Figure 3 A schematic cross-sectional view of the limit assembly provided by the utility model;

[0019] Figure 4 A schematic diagram of the structure of the limit bracket provided by the utility model;

[0020] Figure 5 This is a structural schematic diagram of the telescopic member provided by the utility model.

[0021] Numbers in the figure: 1. Equipment box; 2. Digital display screen; 3. Placement boss; 4. Sealing limit cover; 5. Rubber pad; 6. Pressure pipe; 7. Booster head; 8. Gas booster pump; 9. Glass door; 10. Sensor; 11. Limit bracket; 12. Limit groove; 13. Sliding groove; 14. Oblique block; 15. Telescopic rod; 16. Sliding block; 17. Telescopic spring; 18. Hydraulic cylinder; 19. Sliding long rod. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] In the specific implementation process, Figures 1 to 5 As shown, the alloy casting air tightness test equipment includes an equipment box 1 and a sensor 10 located inside the equipment box 1, the sensor 10 is an air pressure sensor 10, the bottom wall of the equipment box 1 is fixedly connected with a placement boss 3, the two ends of the inner wall of the equipment box 1 are fitted with sealing limit covers 4, the top of the equipment box 1 is fixedly connected with a hydraulic cylinder 18 fixed to the top of the sealing limit cover 4, a booster component is provided on the equipment box 1, and the booster component passes through the sealing limit cover 4, and a plurality of limit components are arranged at the bottom of the sealing limit cover 4 in a direction away from the booster component, and the top of the sensor 10 can be snapped onto one of the limit components;

[0024] It should be understood from the above scheme that the staff places the required experimental alloy casting firmly on the placement boss 3, which provides a stable support surface to ensure that the casting remains vertical and fixed in position during the test. Then the hydraulic cylinder 18 is started, and the sealing limit cover 4 connected to its output end begins to move down smoothly, so that the sealing limit cover 4 located inside the equipment box 1 and its inner cavity form a closed working space to prevent gas leakage and ensure the accuracy of the test data. When the bottom of the sealing limit cover 4 is tightly fitted with the alloy casting, an effective sealing interface is formed, and at the same time, it plays a limiting role to prevent the casting from moving when it is subjected to high pressure. At this time, the output end of the booster component is located inside the sealed alloy casting. When the booster component is started, it will inject high-pressure gas into the casting to simulate actual application. The sensor 10 is arranged at the bottom of the sealing limit cover 4, which is closer to the pressure application point, and can monitor the actual pressure changes inside the casting more accurately and in real time, thereby improving the accuracy of the data and timely discovering potential pressure anomalies. When facing alloy castings of different heights, by adjusting the stroke of the hydraulic cylinder 18, the sensor 10 fixed at the bottom of the sealing limit cover 4 will not hinder the stroke of the hydraulic cylinder 18, thereby improving its applicability to different alloy castings. For alloy castings of different diameters, the relative position between the casting and the booster assembly can be changed by replacing the limit assemblies in different positions to ensure that the booster gas can be evenly and effectively applied to the inside of the casting, thereby improving the adaptability and accuracy of the test.

[0025] The four corners of the equipment box 1 are fixedly connected with sliding long rods 19, and the four corners of the sealing limit cover 4 slide along the outer side walls of the four sliding long rods 19 respectively. The sliding long rods 19 can guide the sealing limit cover 4 in the vertical direction when the hydraulic cylinder 18 drives the sealing limit cover 4 to slide vertically, thereby improving its stability. A glass door 9 is hinged on the front side of the equipment box 1. By opening the glass door 9, the alloy casting can be placed or taken out. The glass door 9 is convenient for observing the experimental conditions inside. A digital display screen 2 for receiving data from the sensor 10 is arranged on the outside of the equipment box 1. The digital display screen 2 is used to receive data monitored in real time by the sensor 10 and display the detection data on the digital display screen 2;

[0026] The boosting component includes a gas boosting pump 8, which is fixedly connected to the top of the equipment box 1. The output end of the gas boosting pump 8 extends into the interior of the equipment box 1 and is fixedly connected to a boosting head 7. The boosting head 7 passes through the center position of the sealing limit cover 4. The center position of the bottom of the sealing limit cover 4 is fixedly connected to a pressure pipe 6, and the pressure pipe 6 is threadedly connected to the boosting head 7. The bottom of the sealing limit cover 4 is also fixedly connected to a rubber pad 5.

[0027] It should be understood from the above scheme that when the sealing limit cover 4 moves down until it fits with the alloy casting, the boost head 7 can be threadedly removed so that the compressed air is discharged along the pressure pipe 6 when the sealing limit cover 4 moves down, thereby keeping the air pressure inside the equipment box 1 continuously balanced with the external atmospheric pressure. Subsequently, it can be threadedly connected so that the gas booster pump 8 can pressurize the interior of the equipment box 1 through the pressure pipe 6.

[0028] The limit assembly includes a limit bracket 11 embedded in the bottom of the sealing limit cover 4 and a telescopic member fixedly connected to the top of the sensor 10. The inner wall of the limit bracket 11 is respectively provided with a limit groove 12 and a sliding groove 13. The top of the telescopic member extends to the inside of the limit groove 12 of the limit bracket 11. The telescopic member includes a telescopic rod 15. The bottom of the telescopic rod 15 is fixedly connected to the sensor 10. The top of the telescopic rod 15 is fixedly connected with an oblique block 14. The outer wall of the telescopic rod 15 is sequentially provided with a sliding block 16 and a telescopic spring 17 from bottom to top. The two ends of the telescopic rod 15 are respectively fixedly connected to the sliding block 16 and the oblique block 14. The outer wall of the oblique block 14 is fitted with the inner wall of the limit groove 12 of the limit bracket 11. The two ends of the sliding block 16 are slidably connected to the inner wall of the sliding groove 13 of the limit bracket 11.

[0029] It should be understood from the above scheme that when implementing the above-mentioned replacement of the limit assembly in different positions, by applying a force to the sensor 10 to move vertically toward the bottom, the telescopic rod 15 and the oblique block 14 are driven to move downward until they are out of the limit groove 12, and the telescopic rod 15 slides inside the sliding block 16. At this time, it can slide horizontally to one side, so that the limit assembly is taken out, and then adjusted to the bottom of the limit assembly to be fixed, and the side with the longer cross section is inserted along the sliding groove 13 of the limit bracket 11 to play a supporting role, and then a pulling force is applied to the sensor 10 to force the telescopic spring 17 to contract, so that the top of the oblique block 14 is in contact with the inner wall of the limit bracket 11, and the oblique block 14 is pushed to the bottom of the limit groove 12 of the limit bracket 11, and the applied force is cancelled, and the reset and fixation are achieved by the telescopic spring 17.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Alloy casting air tightness test equipment, characterized in that: The invention comprises an equipment box (1) and a sensor (10) located inside the equipment box, wherein a placement boss (3) is fixedly connected to the inner bottom wall of the equipment box (1), sealing limit covers (4) are fitted at both ends of the inner wall of the equipment box (1), and a hydraulic cylinder (18) fixed to the top of the sealing limit cover (4) is fixedly connected to the top of the equipment box (1), a booster assembly is arranged on the equipment box (1), and the booster assembly passes through the sealing limit cover (4), a plurality of limit assemblies are arranged at the bottom of the sealing limit cover (4) in a direction away from the booster assembly, and the top of the sensor (10) is movably connected to one of the limit assemblies.

2. The alloy casting airtightness test equipment according to claim 1, characterized in that: The four corners of the interior of the equipment box (1) are respectively fixedly connected to long sliding rods (19); the four corners of the sealing limit cover (4) slide along the outer side walls of the four long sliding rods (19); a glass door (9) is hingedly connected to the front side of the equipment box (1); and a digital display screen (2) for receiving data from the sensor (10) is arranged on the outside of the equipment box (1).

3. The alloy casting air tightness test equipment according to claim 2, characterized in that: The boosting assembly comprises a gas boosting pump (8), the gas boosting pump (8) being fixedly connected to the top of the equipment box (1), the output end of the gas boosting pump (8) extending through the inside of the equipment box (1) and being fixedly connected to a boosting head (7), the boosting head (7) passing through the center position of the sealing limit cover (4).

4. The alloy casting air tightness test equipment according to claim 3, characterized in that: A pressure pipe (6) is fixedly connected to the center position of the bottom of the sealing limit cover (4), and the pressure pipe (6) is threadedly connected to the booster head (7). A rubber pad (5) is also fixedly connected to the bottom of the sealing limit cover (4).

5. The alloy casting air tightness test equipment according to claim 4, characterized in that: The limit assembly comprises a limit bracket (11) embedded in the bottom of the sealing limit cover (4) and a telescopic member fixedly connected to the top of the sensor (10), the inner side wall of the limit bracket (11) is respectively provided with a limit groove (12) and a sliding groove (13), and the top of the telescopic member extends into the limit groove (12) of the limit bracket (11).

6. The alloy casting air tightness test equipment according to claim 5, characterized in that: The telescopic member comprises a telescopic rod (15), the bottom of the telescopic rod (15) is fixedly connected to the sensor (10), the top of the telescopic rod (15) is fixedly connected to an oblique block (14), the outer side wall of the telescopic rod (15) is provided with a sliding block (16) and a telescopic spring (17) in sequence from bottom to top, and the two ends of the telescopic rod (15) are respectively fixedly connected to the sliding block (16) and the oblique block (14).

7. The alloy casting airtightness test equipment according to claim 6, characterized in that: The outer wall of the oblique block (14) fits with the inner wall of the limiting groove (12) of the limiting bracket (11), and the two ends of the sliding block (16) are slidably connected to the inner wall of the sliding groove (13) of the limiting bracket (11).

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