Heptafluoropropane cylinder air tightness testing device

Abstract

This utility model discloses a heptafluoropropane cylinder airtightness testing device, belonging to the field of heptafluoropropane cylinders. It includes a testing chamber with a top frame on the top. Several folded waterproof sheets are arranged at the bottom of the top frame and along its vertical direction. A first support frame is provided on one side of the top frame, and a lead screw is vertically installed within the inner cavity of the first support frame. A threaded sleeve is fitted around the outer ring of the lead screw, and one side of the threaded sleeve is fixedly connected to one side of the top frame. A water inlet pipe is fixedly connected to one side of the testing chamber, and a water outlet pipe is fixedly connected to the other side. Clamping claws are symmetrically arranged on both sides of the inner cavity of the testing chamber. Through the coordinated use of these devices, the versatility and adaptability of the testing device are enhanced, eliminating the need for frequent replacement of testing equipment. This not only significantly improves testing efficiency but also greatly reduces the workload of operators, making the entire testing process smoother and more efficient.

Description

Technical Field

[0001] This utility model relates to the field of heptafluoropropane cylinder technology, specifically a heptafluoropropane cylinder airtightness testing device. Background Technology

[0002] Heptafluoropropane cylinders are high-pressure containers specifically designed to store heptafluoropropane extinguishing agent. They are typically made of high-strength, corrosion-resistant steel to ensure stable performance even under high pressure. As a highly efficient and environmentally friendly extinguishing agent, heptafluoropropane is widely used in fire suppression in various locations. The cylinder design considers both safety and convenience, enabling rapid release of the extinguishing agent in emergencies to effectively control the fire. Furthermore, heptafluoropropane cylinders undergo rigorous testing and certification to ensure their quality and reliability. In short, heptafluoropropane cylinders are an indispensable and crucial component of modern fire protection systems, playing a vital role in safeguarding people's lives and property.

[0003] Existing heptafluoropropane cylinder airtightness testing devices typically use water immersion to test airtightness. However, these devices are usually only suitable for testing cylinders of specific sizes and lack flexibility. For heptafluoropropane cylinders of different sizes, personnel need to use airtightness testing devices of different specifications or matching devices. This not only increases the cost of equipment procurement and maintenance, but also makes the testing process cumbersome and complicated. In addition, frequent replacement of testing devices reduces testing efficiency and increases the labor intensity of operators.

[0004] Therefore, this invention provides a device for testing the air tightness of heptafluoropropane cylinders to solve the above problems. Utility Model Content

[0005] This invention provides a device for testing the air tightness of heptafluoropropane cylinders, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heptafluoropropane cylinder airtightness testing device, comprising a test chamber, a top frame being provided on the top of the test chamber, a plurality of folded waterproof cloths being provided at the bottom of the top frame and along the vertical direction of the top frame, a first support frame being provided on one side of the top frame, and a lead screw being vertically provided in the inner cavity of the first support frame, a threaded sleeve being fitted around the outer ring of the lead screw, and one side of the threaded sleeve being fixedly connected to one side of the top frame, a water inlet pipe being fixedly connected to one side of the test chamber, and a water outlet pipe being fixedly connected to the other side of the test chamber, and clamping claws being symmetrically arranged on both sides of the inner cavity of the test chamber.

[0007] As a preferred technical solution of this application, cylinders are installed on both sides of the test box, and a short rod that passes through the side wall of the test box through a sealing bushing is fixedly connected to the output end of the cylinder. One end of the short rod is fixedly connected to one side of the adjacent clamping claw.

[0008] As a preferred technical solution of this application, the bottom of the lead screw is rotatably connected to the bottom of the first support frame through a rotating shaft, and the top of the lead screw passes through the top of the first support frame through a bushing.

[0009] As a preferred technical solution of this application, a motor is installed on the top of the first support frame, and the output shaft of the motor is connected to the top of the lead screw.

[0010] As a preferred technical solution of this application, a load-bearing plate is fixedly connected to the bottom of the test box, the bottom of the first support frame is fixedly connected to the top of the load-bearing plate, and a second support frame is fixedly connected to one side of the top of the load-bearing plate.

[0011] As a preferred technical solution of this application, a vertical rod is fixedly connected to the bottom of the inner cavity of the second support frame, and the top of the vertical rod is fixedly connected to the top of the inner cavity of the second support frame. A sliding sleeve is slidably connected to the outer ring of the vertical rod, and one side of the sliding sleeve is fixedly connected to one side of the adjacent top frame.

[0012] As a preferred technical solution of this application, two adjacent folded waterproof cloths are fixedly connected by waterproof adhesive, one side of one of the folded waterproof cloths is fixedly connected to the bottom of the top frame, and one side of the other folded waterproof cloth is fixedly connected to the top of the test box.

[0013] The beneficial effects of this utility model are:

[0014] The coordinated action of the cylinder and the clamping claws ensures a secure grip on the heptafluoropropane cylinder, effectively guaranteeing the stability of the cylinder and the accuracy of the test results during the testing process. Furthermore, the design of the motor, lead screw, threaded sleeve, and the combination of the top frame and folded waterproof fabric allows for flexible adjustment of the test chamber's volume according to the height of the heptafluoropropane cylinder. This enhances the versatility and adaptability of the testing device, eliminating the need for frequent replacements of the testing equipment. This not only significantly improves testing efficiency but also greatly reduces the workload of operators, making the entire testing process smoother and more efficient. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the heptafluoropropane cylinder airtightness testing device;

[0016] Figure 2 This is a schematic diagram of the water inlet pipe in the airtightness testing device for a heptafluoropropane cylinder.

[0017] Figure 3 This is a schematic diagram of the top frame in the airtightness testing device for a heptafluoropropane cylinder.

[0018] Figure 4This is a schematic diagram of the folded waterproof cloth structure in the airtightness testing device for a heptafluoropropane cylinder.

[0019] Figure 5 This is a schematic diagram of the cylinder structure in the heptafluoropropane cylinder airtightness testing device.

[0020] In the picture:

[0021] 1. Test box; 2. Load-bearing plate; 3. Cylinder; 4. Folded waterproof cloth; 5. Top frame; 6. First support frame; 7. Motor; 8. Water inlet pipe; 9. Water outlet pipe; 10. Second support frame; 11. Lead screw; 12. Screw sleeve; 13. Clamping claw; 14. Vertical rod; 15. Sliding sleeve; 16. Short rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a device for testing the airtightness of heptafluoropropane cylinders, such as... Figures 1-5 As shown, the technical solution includes a test box 1. The top of the test box 1 is provided with a top frame 5. Several folded waterproof cloths 4 are provided at the bottom of the top frame 5 and along the vertical direction of the top frame 5. A first support frame 6 is provided on one side of the top frame 5. A lead screw 11 is vertically provided in the inner cavity of the first support frame 6. A screw sleeve 12 is sleeved on the outer ring of the lead screw 11. One side of the screw sleeve 12 is fixedly connected to one side of the top frame 5. A water inlet pipe 8 is fixedly connected to one side of the test box 1. A water outlet pipe 9 is fixedly connected to the other side of the test box 1. Clamping claws 13 are symmetrically arranged on both sides of the inner cavity of the test box 1.

[0024] Cylinders 3 are installed on both sides of the test chamber 1, and a short rod 16 that passes through the side wall of the test chamber 1 via a sealed bushing is fixedly connected to the output end of the cylinder 3. One end of the short rod 16 is fixedly connected to one side of the adjacent clamping claw 13.

[0025] The bottom of the lead screw 11 is rotatably connected to the bottom of the first support frame 6 via a rotating shaft, and the top of the lead screw 11 passes through the top of the first support frame 6 via a bushing.

[0026] A motor 7 is mounted on the top of the first support frame 6, and the output shaft of the motor 7 is connected to the top of the lead screw 11 for transmission.

[0027] Specifically: During the airtightness test of a heptafluoropropane cylinder, the operator first places the heptafluoropropane cylinder to be tested into the test chamber 1. Then, the operator starts cylinder 3, and the piston rod of cylinder 3 drives the corresponding short rod 16 and the clamping jaws 13 connected to the short rod 16 to move. Through the precise control of cylinder 3, the two clamping jaws 13 gradually approach and finally tightly clamp the heptafluoropropane cylinder, achieving the limitation and fixation of the cylinder, ensuring that the cylinder will not move or tilt due to external forces during subsequent testing. Next, the operator needs to adjust the volume inside the test chamber 1 according to the height of the heptafluoropropane cylinder. To do this, the operator starts motor 7, and the output shaft of motor 7 drives the lead screw 11 to rotate. The lead screw 11 cooperates with the threaded sleeve 12, causing the threaded sleeve 12 to move vertically under the rotation of the lead screw 11. With the adjustment of the setting, the screw sleeve 12 is connected to the top frame 5, so the top frame 5 also moves with the screw sleeve 12. Driven by the top frame 5, several folded waterproof cloths 4 gradually unfold and fit tightly against the inner wall of the test chamber 1, thereby effectively increasing the corresponding volume of the test chamber 1, ensuring that it can fully accommodate heptafluoropropane cylinders of different heights. After the volume of the test chamber 1 is adjusted, the operator adds water to the test chamber 1 through the water inlet pipe 8 until the entire heptafluoropropane cylinder is completely submerged in water. At this time, the airtightness of the cylinder will be tested by immersion in water. If there is a leak in the cylinder, bubbles will be generated in the water. The operator can judge whether the airtightness of the cylinder is qualified based on this. Through the design of the folded waterproof cloth 4, it can be unfolded to increase the volume of the test chamber 1 when needed, and can be folded and stored when not needed, saving space and making the test device more compact and portable.

[0028] The bottom of the test box 1 is fixedly connected to the load-bearing plate 2, the bottom of the first support frame 6 is fixedly connected to the top of the load-bearing plate 2, and the top side of the load-bearing plate 2 is fixedly connected to the second support frame 10.

[0029] A vertical rod 14 is fixedly connected to the bottom of the inner cavity of the second support frame 10, and the top of the vertical rod 14 is fixedly connected to the top of the inner cavity of the second support frame 10. A sliding sleeve 15 is slidably connected to the outer ring of the vertical rod 14, and one side of the sliding sleeve 15 is fixedly connected to one side of the adjacent top frame 5.

[0030] Two adjacent folded waterproof fabrics 4 are fixedly connected by waterproof adhesive. One side of one folded waterproof fabric 4 is fixedly connected to the bottom of the top frame 5, and one side of the other folded waterproof fabric 4 is fixedly connected to the top of the test box 1.

[0031] Specifically, this design, through the cooperation of cylinder 3 and clamping claw 13, achieves stable clamping of the heptafluoropropane cylinder, ensuring the stability and accuracy of the cylinder during testing. Simultaneously, the design of motor 7, lead screw 11, screw sleeve 12, top frame 5, and folded waterproof cloth 4 allows the volume of test chamber 1 to be flexibly adjusted according to the height of the heptafluoropropane cylinder, greatly improving the versatility and flexibility of the testing device. Compared to existing heptafluoropropane cylinder airtightness testing devices, this technical solution eliminates the need for different specifications or matching testing devices for cylinders of different sizes, thus significantly reducing equipment procurement and maintenance costs. Furthermore, the elimination of frequent replacement of testing devices also significantly improves testing efficiency and reduces the workload of operators.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for testing the airtightness of a heptafluoropropane cylinder, comprising a test box (1), characterized in that: The test box (1) is provided with a top frame (5) on the top. Several folded waterproof cloths (4) are provided at the bottom of the top frame (5) and along the vertical direction of the top frame (5). A first support frame (6) is provided on one side of the top frame (5). A screw rod (11) is vertically provided in the inner cavity of the first support frame (6). A screw sleeve (12) is provided on the outer ring of the screw rod (11). One side of the screw sleeve (12) is fixedly connected to one side of the top frame (5). A water inlet pipe (8) is fixedly connected to one side of the test box (1). A water outlet pipe (9) is fixedly connected to the other side of the test box (1). Clamping claws (13) are symmetrically provided on both sides of the inner cavity of the test box (1).

2. The heptafluoro-propane cylinder airtightness testing device according to claim 1, characterized in that: Both sides of the test box (1) are equipped with cylinders (3), and the output end of the cylinder (3) is fixedly connected to a short rod (16) that passes through the side wall of the test box (1) through a sealing bushing. One end of the short rod (16) is fixedly connected to one side of the adjacent clamping claw (13).

3. The heptafluoro-propane cylinder airtightness testing device according to claim 1, characterized in that: The bottom of the lead screw (11) is rotatably connected to the bottom of the first support frame (6) via a rotating shaft, and the top of the lead screw (11) passes through the top of the first support frame (6) via a bushing.

4. The heptafluoro-propane cylinder airtightness testing device according to claim 3, characterized in that: A motor (7) is mounted on the top of the first support frame (6), and the output shaft of the motor (7) is connected to the top of the lead screw (11) for transmission.

5. The heptafluoro-propane cylinder airtightness testing device according to claim 1, characterized in that: The bottom of the test box (1) is fixedly connected to a load-bearing plate (2), the bottom of the first support frame (6) is fixedly connected to the top of the load-bearing plate (2), and a second support frame (10) is fixedly connected to one side of the top of the load-bearing plate (2).

6. The heptafluoropropane cylinder airtightness testing device according to claim 5, characterized in that: A vertical rod (14) is fixedly connected to the bottom of the inner cavity of the second support frame (10), and the top of the vertical rod (14) is fixedly connected to the top of the inner cavity of the second support frame (10). A sliding sleeve (15) is slidably connected to the outer ring of the vertical rod (14), and one side of the sliding sleeve (15) is fixedly connected to one side of the adjacent top frame (5).

7. The heptafluoro-propane cylinder airtightness testing device according to claim 1, characterized in that: The two adjacent folded waterproof fabrics (4) are fixedly connected by waterproof adhesive. One side of one of the folded waterproof fabrics (4) is fixedly connected to the bottom of the top frame (5), and one side of the other folded waterproof fabric (4) is fixedly connected to the top of the test box (1).

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