A gas cylinder pressure testing device

Abstract

This utility model relates to a gas cylinder pressure testing device, belonging to the technical field of pressure testing devices. It includes a base frame, a gantry frame fixed to the upper surface of the base frame, a clamping mechanism inside the base frame, a control panel on the right side of the gantry frame, and a pressure testing assembly on the upper surface of the gantry frame. The clamping mechanism includes a threaded rod rotatably connected to the inside of the base frame via bearings. The right side of the threaded rod rotatably passes through the base frame and extends to the right side. Two movable blocks are threadedly connected to the outer side of the threaded rod. This gas cylinder pressure testing device allows the threaded rod to rotate inside the base frame by turning a handwheel. The two movable blocks threadedly connected to the outer side of the threaded rod move synchronously in opposite directions or synchronously in opposite directions, thereby changing the distance between the arc-shaped clamps on the left and right sides. This allows for clamping and fixing gas cylinders of different diameters for pressure testing, improving practicality.

Description

Technical Field

[0001] This utility model relates to the technical field of pressure testing devices, specifically a gas cylinder pressure testing device. Background Technology

[0002] A gas cylinder is a type of movable pressure vessel with a bottle-shaped main structure, which is generally filled with compressed gas, liquefied gas, dissolved and adsorbed gas, etc. Gas cylinders have a wide range of applications, and they are almost indispensable in both production and daily life. Pressure testing devices can be used to test the pressure of gas cylinders.

[0003] For example, CN214748721U discloses a pressure testing device for gas cylinders, including a sealing mechanism for sealing the gas cylinder, a base, a test gas cylinder, and a water supply base. The sealing mechanism is located on the lower side of the base, the test gas cylinder is located on the upper side of the base, and the water supply base is located on the front side of the sealing mechanism. It also includes a support mechanism for supporting the gas cylinder and a testing mechanism for testing the gas cylinder. The utility model uses springs and fixed seats to tension the support frame, so that it can automatically spring up when the test gas cylinder is sent into or out of the test tube, thereby quickly supporting the test gas cylinder and reducing the labor intensity of manual labor. Compressed air is blown into the test tube by the air inlet seat, and the air in the test tube is blown out from the test frame. At the same time, a humidity detector is used to detect the change in air humidity, thereby determining the sealing of the gas cylinder.

[0004] While the aforementioned patent has many advantages, the prior art of this patent involves testing the gas cylinder inside the testing mechanism, and the internal space of the testing mechanism is fixed, which is not convenient for testing gas cylinders of different sizes, thus reducing its practicality. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a gas cylinder pressure testing device, which has the advantages of facilitating pressure testing of gas cylinders of different sizes, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A gas cylinder pressure testing device includes a base frame, a gantry frame fixed on the upper surface of the base frame, a clamping mechanism inside the base frame, a control panel on the right side of the gantry frame, and a pressure testing component on the upper surface of the gantry frame.

[0008] The clamping mechanism includes a threaded rod rotatably connected to the inside of the base frame via a bearing. The right side of the threaded rod rotatably passes through the base frame and extends to the right side. A handwheel is fixed to the right side of the threaded rod. Two movable blocks are threadedly connected to the outer side of the threaded rod. Movable openings are provided on both the left and right sides of the upper surface of the base frame. Fixed rods are fixed to the upper surfaces of the movable blocks on both sides. Telescopic rods are fixed to the upper and lower sides of the left and right side walls of the inner cavity of the gantry frame. Arc-shaped clamps are fixed to the opposite side of the telescopic rods on both sides. The fixed rods on both sides are fixed to the front of the telescopic rods on both sides.

[0009] Furthermore, the telescopic rod includes a first slide rod, and a second slide rod is slidably connected inside the first slide rod.

[0010] Furthermore, the moving block moves linearly left and right inside the base frame.

[0011] Furthermore, the pressure testing assembly includes an electric push rod fixed to the upper surface of the gantry frame. The outer side of the output shaft of the electric push rod slides through the gantry frame and extends into it. A mounting plate is fixed to the outer side of the output shaft of the electric push rod. A sealing cover is fixed to the lower surface of the mounting plate. A connecting pipe is fixed to the left side of the sealing cover. The right side of the connecting pipe passes through the sealing cover and extends into it.

[0012] Furthermore, the pressure testing assembly also includes a pneumatic booster pump fixed on the left side of the upper surface of the gantry. The output end of the pneumatic booster pump is connected to an electromagnetic valve through a pipe. The output end of the electromagnetic valve is connected to a fixed frame through a pipe. A pressure sensor is fixed on the right side wall of the inner cavity of the fixed frame. The lower surface of the fixed frame is connected to the left side of the connecting pipe through a movable pipe.

[0013] Furthermore, the solenoid valve, pneumatic booster pump, electric actuator, and pressure sensor are all electrically connected to the control panel via wires.

[0014] Furthermore, the movable openings on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal central axis of the base frame.

[0015] Furthermore, anti-slip rubber sheets are fixed on the opposite sides of the arc-shaped clamps on both the left and right sides.

[0016] Compared with the prior art, the present invention provides a gas cylinder pressure testing device, which has the following beneficial effects:

[0017] 1. This gas cylinder pressure testing device can rotate the threaded rod inside the base frame by turning the handwheel. The two moving blocks connected to the outside of the threaded rod move synchronously in opposite directions or synchronously in opposite directions, thereby changing the distance between the arc-shaped clamps on the left and right sides. This allows gas cylinders of different sizes to be clamped and fixed for pressure testing, improving practicality.

[0018] 2. This gas cylinder pressure testing device can be activated via the control panel by activating the electric push rod, which moves the sealing cap downwards. The lower surface of the sealing cap then contacts and seals the opening at the top of the gas cylinder. Next, the pneumatic booster pump and solenoid valve are opened via the control panel. The pressure sensor detects the pressure value, which is displayed on the control panel's screen. When the internal pressure of the gas cylinder reaches the standard value, the pneumatic booster pump and solenoid valve are closed via the control panel. The pressure value on the control panel can then be observed. A decrease in pressure indicates a gas cylinder leak, while a constant pressure indicates the gas cylinder is qualified. Real-time monitoring of the gas cylinder's pressure ensures the pressure testing process meets standards. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the clamping mechanism of this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the telescopic rod and the gantry frame of this utility model;

[0022] Figure 4 This is a schematic diagram of the pressure testing component of this utility model.

[0023] In the diagram: 1. Base frame, 2. Gantry frame, 3. Clamping mechanism, 301. Threaded rod, 302. Handwheel, 303. Moving block, 304. Fixed rod, 305. Telescopic rod, 306. Arc-shaped clamping plate, 4. Control panel, 5. Pressure testing assembly, 501. Electric push rod, 502. Mounting plate, 503. Sealing cover, 504. Connecting pipe, 505. Pneumatic booster pump, 506. Solenoid valve, 507. Fixed frame, 508. Pressure sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 The gas cylinder pressure testing device in this embodiment includes a base frame 1, a gantry frame 2 fixed on the upper surface of the base frame 1, a clamping mechanism 3 inside the base frame 1, a control panel 4 on the right side of the gantry frame 2, and a pressure testing component 5 on the upper surface of the gantry frame 2.

[0026] Please see Figures 2 to 3 In this embodiment, the clamping mechanism 3 includes a threaded rod 301 rotatably connected to the inside of the base frame 1 via a bearing. The right side of the threaded rod 301 rotatably passes through the base frame 1 and extends to the right side. A handwheel 302 is fixed to the right side of the threaded rod 301. Two moving blocks 303 are threadedly connected to the outer side of the threaded rod 301. Moving openings are provided on both the left and right sides of the upper surface of the base frame 1. Fixed rods 304 are fixed to the upper surfaces of the moving blocks 303 on both the left and right sides. Telescopic rods 305 are fixed to the upper and lower sides of the left and right side walls of the inner cavity of the gantry frame 2. Arc-shaped clamping plates 306 are fixed to the opposite side of the telescopic rods 305 on both the left and right sides. The fixed rods 304 on both the left and right sides are fixed to the front of the telescopic rods 305 on both the left and right sides.

[0027] Specifically, the outer side of the threaded rod 301 is provided with threads in opposite directions. When the threaded rod 301 rotates, the object threaded to the outer side of the threaded rod 301 moves synchronously in opposite directions or synchronously in opposite directions under the restraint of the object.

[0028] Specifically, the telescopic rod 305 includes a first slide rod, and a second slide rod is slidably connected inside the first slide rod. The moving block 303 moves linearly left and right inside the base frame 1. The left and right moving openings are symmetrically distributed on the left and right sides of the longitudinal central axis of the base frame 1. Anti-slip rubber sheets are fixed on the opposite side of the left and right arc-shaped clamps 306.

[0029] It should be noted that by rotating the handwheel 302, the threaded rod 301 can be rotated inside the base frame 1. The two moving blocks 303 threaded to the outside of the threaded rod 301 can move synchronously in opposite directions or synchronously in opposite directions, thereby changing the distance between the arc-shaped clamps 306 on the left and right sides, so as to clamp and fix gas cylinders of different diameters for pressure testing.

[0030] Please see Figure 4 In this embodiment, the pressure testing assembly 5 includes an electric push rod 501 fixed to the upper surface of the gantry frame 2. The outer side of the output shaft of the electric push rod 501 slides through the gantry frame 2 and extends into the interior. An installation plate 502 is fixed to the outer side of the output shaft of the electric push rod 501. A sealing cover 503 is fixed to the lower surface of the installation plate 502. A connecting pipe 504 is fixed to the left side of the sealing cover 503. The right side of the connecting pipe 504 passes through the sealing cover 503 and extends into the interior.

[0031] Specifically, the pressure testing assembly 5 also includes a pneumatic booster pump 505 fixed on the left side of the upper surface of the gantry 2. The output end of the pneumatic booster pump 505 is connected to a solenoid valve 506 through a pipe. The output end of the solenoid valve 506 is connected to a fixed frame 507 through a pipe. A pressure sensor 508 is fixed on the right side wall of the inner cavity of the fixed frame 507. The lower surface of the fixed frame 507 is connected to the left side of the connecting pipe 504 through a movable pipe. The solenoid valve 506, the pneumatic booster pump 505, the electric push rod 501 and the pressure sensor 508 are all electrically connected to the control panel 4 through wires. The length of the movable pipe can allow the sealing cover 503 to move up and down. The sealing cover 503 includes a fixed cover, and a sealing rubber ring is fixed on the lower surface of the fixed cover.

[0032] It should be noted that, in addition, all electrical components appearing in this embodiment are electrically connected to the control panel 4 and the power supply. The control panel 4 can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing publicly available power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0033] It should be noted that the electric push rod 501 can be activated via the control panel 4, causing the sealing cover 503 to move downwards. The lower surface of the sealing cover 503 then contacts and seals the opening at the top of the gas cylinder. Next, the pneumatic booster pump 505 and the solenoid valve 506 are opened via the control panel 4, allowing air to exit the pneumatic booster pump 505 and enter the fixed frame 507 through a pipe. Air then flows through the movable pipe and connecting pipe 504 into the sealing cover 503 and the gas cylinder. The pressure sensor 508 detects the pressure value, which is displayed on the screen of the control panel 4. When the internal pressure of the gas cylinder reaches the standard value, the pneumatic booster pump 505 and the solenoid valve 506 are closed via the control panel 4. The pressure value on the control panel 4 can then be observed. A decrease in pressure indicates a gas cylinder leak, while a constant pressure indicates the gas cylinder is qualified. Real-time monitoring of the gas cylinder pressure ensures that the pressure test process meets standards.

[0034] The working principle of the above embodiments is as follows:

[0035] In use, rotating the handwheel 302 causes the threaded rod 301 to rotate inside the base frame 1. The two moving blocks 303, threaded to the outside of the threaded rod 301, move synchronously in opposite directions or synchronously in opposite directions, thus changing the distance between the left and right arc-shaped clamping plates 306. This allows for clamping and fixing gas cylinders of different sizes for pressure testing. During pressure testing, the gas cylinder can be placed vertically at the center of the upper surface of the base frame 1, positioned between opposite sides of the left and right arc-shaped clamping plates 306. Then, by turning the handwheel 302, the left and right arc-shaped clamping plates 306 move synchronously in opposite directions, clamping and fixing the gas cylinder. Finally, the electric push rod 501 can be activated via the control panel 4, causing the sealing cover 503 to move. The cylinder moves downwards, and the lower surface of the sealing cap 503 contacts and seals the opening at the top of the cylinder. Then, the pneumatic booster pump 505 and the solenoid valve 506 are turned on via the control panel 4. Air is discharged from the outlet of the pneumatic booster pump 505 and enters the interior of the fixed frame 507 through the pipe. Then, it enters the interior of the sealing cap 503 and the cylinder through the movable pipe and the connecting pipe 504. The pressure value can be detected by the pressure sensor 508 and displayed on the display screen of the control panel 4. When the pressure inside the cylinder reaches the standard value, the pneumatic booster pump 505 and the solenoid valve 506 are turned off via the control panel 4. The pressure value on the control panel 4 can then be observed. When the pressure value decreases, it indicates that the cylinder is leaking. When the pressure value remains unchanged, it indicates that the cylinder is qualified.

[0036] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas cylinder pressure testing device, comprising a base frame (1), characterized in that: A gantry frame (2) is fixed on the upper surface of the base frame (1), a clamping mechanism (3) is provided inside the base frame (1), a control panel (4) is provided on the right side of the gantry frame (2), and a pressure testing component (5) is provided on the upper surface of the gantry frame (2). The clamping mechanism (3) includes a threaded rod (301) rotatably connected to the inside of the base frame (1) via a bearing. The right side of the threaded rod (301) rotatably passes through the base frame (1) and extends to the right side. A handwheel (302) is fixed to the right side of the threaded rod (301). Two moving blocks (303) are threadedly connected to the outer side of the threaded rod (301). Moving openings are provided on both the left and right sides of the upper surface of the base frame (1). Fixed rods (304) are fixed to the upper surfaces of the moving blocks (303) on both the left and right sides. Telescopic rods (305) are fixed to the upper and lower sides of the left and right side walls of the inner cavity of the gantry frame (2). Arc-shaped clamps (306) are fixed to the opposite side of the telescopic rods (305) on both the left and right sides. The fixed rods (304) on both the left and right sides are fixed to the front of the telescopic rods (305) on both the left and right sides.

2. The gas cylinder pressure testing device according to claim 1, characterized in that: The telescopic rod (305) includes a first slide rod, and a second slide rod is slidably connected inside the first slide rod.

3. The gas cylinder pressure testing device according to claim 1, characterized in that: The moving block (303) moves linearly left and right inside the base frame (1).

4. The gas cylinder pressure testing device according to claim 1, characterized in that: The pressure testing assembly (5) includes an electric push rod (501) fixed on the upper surface of the gantry (2). The outer side of the output shaft of the electric push rod (501) slides through the gantry (2) and extends into the interior. An installation plate (502) is fixed on the outer side of the output shaft of the electric push rod (501). A sealing cover (503) is fixed on the lower surface of the installation plate (502). A connecting pipe (504) is fixed on the left side of the sealing cover (503). The right side of the connecting pipe (504) passes through the sealing cover (503) and extends into the interior.

5. A gas cylinder pressure testing device according to claim 4, characterized in that: The pressure testing assembly (5) also includes a pneumatic booster pump (505) fixed on the left side of the upper surface of the gantry (2). The output end of the pneumatic booster pump (505) is connected to an electromagnetic valve (506) through a pipe. The output end of the electromagnetic valve (506) is connected to a fixed frame (507) through a pipe. A pressure sensor (508) is fixed on the right side wall of the inner cavity of the fixed frame (507). The lower surface of the fixed frame (507) is connected to the left side of the connecting pipe (504) through a movable pipe.

6. A gas cylinder pressure testing device according to claim 5, characterized in that: The solenoid valve (506), pneumatic booster pump (505), electric push rod (501) and pressure sensor (508) are all electrically connected to the control panel (4) via wires.

7. A gas cylinder pressure testing device according to claim 1, characterized in that: The movable openings on the left and right sides are symmetrically distributed on the left and right sides of the longitudinal central axis of the base frame (1).

8. A gas cylinder pressure testing device according to claim 1, characterized in that: Anti-slip rubber sheets are fixed on the opposite side of the arc-shaped clamps (306) on both the left and right sides.

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