A pressure vessel shell inspection apparatus

Abstract

The utility model discloses a pressure vessel shell detection device, including frame body, be equipped with the placement platform for placing pressure vessel on the frame body, still be equipped with the clamping mechanism for clamping pressure vessel and be equipped with the spray mechanism for the shell surface of pressure vessel to spray foam on the frame body, clamping mechanism includes the top cover of being equipped with on the frame body and the at least three clamping rods of slidingly being equipped on the top cover, and the top cover is located the just above of placement platform, and at least three clamping rods are about the circular array distribution of the central axis of top cover, and the adjusting assembly is equipped in the top cover, and adjusting assembly can drive clamping rod to be close to each other or each other away. The utility model discloses through installing spray mechanism and clamping mechanism on the frame body, when the pressure vessel of different diameters is placed on the placement platform, clamping mechanism can hold pressure vessel, prevent it to dump, and spray mechanism sprays foam on the outer surface of pressure vessel, can detect the pressure vessel shell air tightness.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel testing technology, and specifically to a pressure vessel shell testing device. Background Technology

[0002] A pressure vessel is a sealed container capable of withstanding pressure. Pressure vessels have a wide range of applications. However, after prolonged use, pressure vessels age, and aging pressure vessels are prone to leakage accidents during use, affecting safety. Therefore, pressure vessels often require airtightness testing after a period of use.

[0003] The commonly used method for airtightness testing is to first pressurize the pressure vessel, and then spray a solution on the surface of the pressure vessel to detect foam or immerse the test piece in the solution. This allows the leaking gas to form bubbles as it passes through the solution or solution foam, thereby determining whether there is a leak in the test piece and the location of the leak.

[0004] Due to the large size of the pressure vessel, it is not convenient to clamp and fix it during the testing process. The pressure vessel is prone to tipping or deflection during the testing process, which affects the testing process. Utility Model Content

[0005] In view of the existing technical problems, this utility model provides a pressure vessel shell detection device to solve the problems in the prior art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: A pressure vessel shell testing device includes a frame, a placement platform for placing a pressure vessel on the frame, a clamping mechanism for holding the pressure vessel, and a spraying mechanism for spraying foam onto the shell surface of the pressure vessel. The clamping mechanism includes a top cover mounted on the frame and at least three clamping rods slidably mounted on the top cover. The top cover is located directly above the placement platform, and the at least three clamping rods are arranged in a circular array about the central axis of the top cover. An adjustment component is provided inside the top cover, which can drive the clamping rods to move closer to or further away from each other.

[0007] In the above technical solution, the pressure vessel is placed on the placement platform, the adjustment component moves the clamping rods to slide so that the clamping rods move closer to each other to clamp the pressure vessel, and then the spraying mechanism sprays foam onto the surface of the pressure vessel shell to achieve the airtightness test of the pressure vessel.

[0008] Preferably, the adjustment assembly includes a turntable disposed inside the top cover, the central axis of the turntable being collinear with the central axis of the top cover, the turntable having the same number of arc-shaped through slots as the clamping rods, the arc-shaped through slots being arranged in a circular array about the central axis of the top cover, and the center of each arc-shaped through slot being located inside the top cover, the clamping rods being slidably inserted through the corresponding arc-shaped through slots.

[0009] With this configuration, when the turntable rotates, the clamping rods slide along the corresponding arc-shaped through grooves, causing multiple clamping rods to move closer or further apart, thereby clamping or releasing the pressure vessel.

[0010] Preferably, the adjustment assembly further includes push rods of the same number as the clamping rods, the push rods being radially movably inserted through the top cover, one end of the push rod being connected to the upper end of the clamping rod at a corresponding position, and the other end extending out of the top cover.

[0011] With this configuration, when the turntable rotates, the clamping rods slide along the arc-shaped through groove under the action of the push rod, causing the clamping rods to slide radially along the top cover at the same time, thus bringing the clamping rods closer to or further away from each other.

[0012] Preferably, the adjustment group further includes an internal gear ring disposed on the turntable and a first motor disposed on the top cover, the output shaft of the first motor being connected to a first gear, the first gear meshing with the internal gear ring.

[0013] Preferably, the central axis of the placement platform is collinear with the central axis of the top cover.

[0014] Preferably, the spraying mechanism includes an external gear ring rotatably mounted on the frame, the central axis of the external gear ring being collinear with the central axis of the placement platform, and the diameter of the external gear ring being larger than the diameter of the placement platform. A spray frame is provided on the external gear ring, and a plurality of spray nozzles are distributed along the upper edge of the spray frame. The height of the spray frame is not lower than the height of the pressure vessel.

[0015] Preferably, a second gear is rotatably connected to the frame, which meshes with the external gear ring, and the second gear is driven by a second motor.

[0016] Preferably, a plurality of the spray nozzles are arranged in a straight line on the spray frame along the vertical direction.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: By installing a spraying mechanism and a clamping mechanism on the frame, when pressure vessels of different diameters are placed on the placement platform, the clamping mechanism can hold the pressure vessels to prevent them from tipping over, and the spraying mechanism sprays foam onto the outer surface of the pressure vessel, thereby testing the airtightness of the pressure vessel shell. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 A schematic diagram of a local structure in the image; Figure 4 for Figure 1 A bottom view of the clamping mechanism. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to experimental examples and specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. All technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0020] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] As attached Figure 1 -Appendix Figure 4 The pressure vessel shell testing device shown includes a frame 1, on which a placement platform 3 for placing a pressure vessel 2 is provided. The placement platform 3 is a cylindrical platform structure. The frame 1 is also provided with a clamping mechanism for holding the pressure vessel 2 and a spraying mechanism for spraying foam onto the outer surface of the pressure vessel 2. When pressure vessels 2 of different diameters within a certain size range are placed on the placement platform 3, the clamping mechanism is activated to clamp the pressure vessel 2 to prevent it from tipping over, and the spraying mechanism begins to spray foam onto the outer surface of the pressure vessel 2, and then an airtightness test is performed.

[0022] refer to Figure 3 and Figure 4The clamping mechanism includes a top cover 4 mounted on the frame 1 and at least three clamping rods 6 slidably mounted on the top cover 4. In this embodiment, four clamping rods 6 are slidably mounted on the top cover 4. The top cover 4 is located directly above the placement platform 3. The central axis of the placement platform 3 is collinear with the central axis of the top cover 4, and the four clamping rods 6 are arranged in a circular array about the central axis of the top cover 4. The axis of the clamping rods 6 is parallel to the central axis of the placement platform 3 or the central axis of the top cover 4. An adjustment component is provided inside the top cover 4, which can drive the four clamping rods 6 to move closer to or further away from each other.

[0023] Specifically, the adjustment assembly includes a turntable 7 disposed inside the top cover 4. The turntable 7 is disc-shaped, and its central axis is collinear with the central axis of the top cover 4. The turntable 7 is provided with the same number of arc-shaped through slots 10 as the clamping rods 6. The arc-shaped through slots 10 are arranged in a circular array about the central axis of the top cover 4, and the centers of the four arc-shaped through slots 10 are all located inside the top cover 4. The clamping rods 6 are slidably inserted through the corresponding arc-shaped through slots 10.

[0024] The top cover 4 is also provided with the same number of push rods 5 as the clamping rods 6. The push rods 5 are movably inserted into the top cover 4 along the radial direction of the top cover 4. The included angle between the four push rods 5 is the same. The upper end of the clamping rod 6 passes through the arc-shaped through groove 10 and is connected to the push rod 5 at the corresponding position. One end of the push rod 5 is connected to the upper end of the clamping rod 6 at the corresponding position, and the other end of the push rod 5 extends out of the top cover 4.

[0025] The adjustment assembly also includes an internal gear ring 8 disposed on the turntable 7 and a first motor 9 disposed on the top cover 4. The upper end face of the internal gear ring 8 is fixedly connected to the turntable 7, and the output shaft of the first motor 9 is connected to a first gear, which meshes with the internal gear ring 8.

[0026] Of course, in other embodiments, the number of clamping rods 6 can be three, five, six or more, and the number of push rods 5 and the number of arc-shaped through slots 10 can also change accordingly.

[0027] refer to Figure 1 and Figure 2 The spraying mechanism includes an external gear ring 13 rotatably mounted on the frame 1. The central axis of the external gear ring 13 is collinear with the central axis of the placement platform 3, and the inner diameter of the external gear ring 13 is larger than the diameter of the placement platform 3. A spray frame 11 is provided on the external gear ring 13, and a plurality of nozzles 12 are distributed on the spray frame 11. The height of the spray frame 11 is not less than the height of the pressure vessel. In this embodiment, a plurality of nozzles 12 are arranged in a straight line along the vertical direction on the spray frame 11. A spray pipe is provided on the spray frame 11, and the nozzles 12 are distributed on the spray pipe. The spray pipe can be connected to a foam supply device used in conjunction with the device.

[0028] A second gear 140 is rotatably connected to the frame 1. The second gear 140 meshes with the outer gear ring 13. The second gear 140 is connected to the output shaft of the second motor 14 mounted on the frame 1. The second motor 14 drives the second gear 140 to rotate, which in turn drives the outer gear ring 13 to rotate, thereby causing the spray frame 11 to rotate around the pressure vessel. In this way, after one rotation, foam can be attached to the outer surface of the outer shell of the pressure vessel 2.

[0029] The working principle of this utility model is as follows: Before testing, the pressure vessel 2 is placed in the center of the placement platform 3. Then, the first motor 9 is started, and the turntable 7 begins to rotate under the action of the first gear and the internal gear ring 8. During the rotation of the turntable 7, the four clamping rods 6 slide in the corresponding four arc-shaped through slots 10, so that the four clamping rods 6 move closer to each other until the four clamping rods 6 clamp the pressure vessel. During the testing process, the pressure vessel 2 will not tip over. Then, the second motor 14 is started, and the external gear ring 13 begins to rotate under the action of the second gear 140. The spray frame 11 and the nozzles 12 distributed on it rotate around the pressure vessel 2 under the drive of the external gear ring 13. During the rotation, foam is sprayed onto the outer surface of the pressure vessel 2 through several nozzles 12. After the foam spraying is completed, it can be observed whether there is any leakage.

[0030] The preferred embodiments of this utility model have been described above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A pressure vessel shell inspection device, comprising a frame (1), characterized in that: The frame (1) is provided with a placement platform (3) for placing the pressure vessel (2), and the frame (1) is also provided with a clamping mechanism for clamping the pressure vessel (2) and a spraying mechanism for spraying foam onto the outer surface of the pressure vessel (2). The clamping mechanism includes a top cover (4) mounted on the frame (1) and at least three clamping rods (6) slidably mounted on the top cover (4). The top cover (4) is located directly above the placement platform (3), and the at least three clamping rods (6) are arranged in a circular array about the central axis of the top cover (4). An adjustment component is provided inside the top cover (4), which can drive the clamping rods (6) to move closer to or further away from each other. The adjustment assembly includes a turntable (7) disposed inside the top cover (4). The central axis of the turntable (7) is collinear with the central axis of the top cover (4). The turntable (7) is provided with an arc-shaped through groove (10) in the same number as the clamping rods (6). The arc-shaped through grooves (10) are arranged in a circular array about the central axis of the top cover (4), and the center of each arc-shaped through groove (10) is located inside the top cover (4). The clamping rods (6) slide through the arc-shaped through grooves (10) at corresponding positions. The adjustment assembly also includes an internal gear ring (8) on the turntable (7) and a first motor (9) on the top cover (4). The output shaft of the first motor (9) is connected to a first gear, which meshes with the internal gear ring (8).

2. The pressure vessel shell testing device according to claim 1, characterized in that: The adjustment assembly also includes push rods (5) of the same number as the clamping rods (6), which are radially movably inserted through the top cover (4). One end of the push rod (5) is connected to the upper end of the clamping rod (6) at the corresponding position, and the other end extends out of the top cover (4).

3. The pressure vessel shell testing device according to claim 1, characterized in that: The central axis of the placement platform (3) is collinear with the central axis of the top cover (4).

4. The pressure vessel shell testing device according to claim 3, characterized in that: The spraying mechanism includes an external gear ring (13) rotatably mounted on the frame (1). The central axis of the external gear ring (13) is collinear with the central axis of the placement platform (3), and the diameter of the external gear ring (13) is greater than the diameter of the placement platform (3). A spray frame (11) is provided on the external gear ring (13), and a plurality of spray nozzles (12) are distributed along the upper edge of the spray frame (11). The height of the spray frame (11) is not lower than the height of the pressure vessel (2).

5. The pressure vessel shell testing device according to claim 4, characterized in that: A second gear (140) is rotatably connected to the frame (1), which meshes with the external gear ring (13). The second gear (140) is driven by the second motor (14).

6. The pressure vessel shell testing device according to claim 5, characterized in that: Several of the nozzles (12) are arranged in a straight line on the spray frame (11) in the vertical direction.

Images