Pressure vessel sealing performance testing device

Abstract

The utility model discloses a pressure vessel leakproofness testing device, which belongs to the technical field of pressure vessel leakproofness testing and comprises a testing box, a main frame connected to the outer side of the testing box, an air pump fixed in the middle of the top end of the main frame, an air delivery pipe connected to the bottom end of the air pump, and an electric push rod fixed in the middle of the bottom end of the main frame. By arranging the pressurizing mechanism, the gas conveying pipe and the pressure container can be connected through the pressurizing mechanism, the pressurizing opening in the bottom end of the pressurizing box enters the pressure container to convey gas, and high-pressure gas conveyed by the gas conveying pipe firstly enters the pressurizing box and blows the impeller to drive the main shaft to rotate; the main shaft can drive the eccentric block to make intermittent contact with the pressurizing box in the rotating process, so that the pressurizing box generates moving vibration, the vibration generated by the pressurizing box can be transmitted to the pressure container due to the fact that the pressure container makes contact with the pressurizing box, bubbles attached to the wall of the pressure container are shaken off, the bubbles can move towards the water surface, and the water surface is protected. Workers can check conveniently, and the inspection quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessel sealing inspection, in particular to a pressure vessel sealing inspection device. Background Art

[0002] A pressure vessel is a sealed container that can withstand pressure. Pressure vessels are widely used and play an important role in many sectors such as industry, civil industry, military industry, and many fields of scientific research. They are most widely used in the chemical industry and petrochemical industry. Pressure vessels used in the petrochemical industry alone account for about 50% of the total number of pressure vessels.

[0003] Chinese patent announcement No. CN218239198U discloses a device for testing the sealing of pressure vessels. A lifting device drives a connecting plate to move up and down. The connecting plate is connected to a clamping device to fix the pressure vessel and bring the pressure vessel into a water tank. Then, air is continuously supplied to the pressure vessel through an air pump and a hose, so that bubbles continuously emerge from the gaps in the pressure vessel. Then, the pressure vessel is scooped up and placed in the pressure vessel by means of a motor, without the need for workers to put their hands into the water tank to work.

[0004] However, compared with the existing technology, during the inspection process of the existing pressure vessels, the pressure vessels are placed in clean water and then high-pressure gas is injected into the pressure vessels. The staff checks whether bubbles are generated to inspect the pressure vessels. During the inspection process, when the gap at the weld of the pressure vessel is small, the tiny bubbles generated will adhere to the wall of the pressure vessel and will not move to the water surface, making it impossible for the staff to observe. Utility Model Content

[0005] The main purpose of the utility model is to provide a pressure vessel sealing inspection device.

[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0007] A pressure vessel sealing inspection device comprises a test box, a main frame is connected to the outside of the test box, an air pump is fixed in the middle of the top of the main frame, an air pipe is connected to the bottom of the air pump, an electric push rod is fixed in the middle of the bottom of the main frame, and a pressurizing mechanism is fixed at the output end of the electric push rod, the pressurizing mechanism comprises a pressurizing box connected to the electric push rod, and one end of the air pipe passes through the top of the pressurizing box, a main shaft is rotatably connected in the middle of the pressurizing box, an impeller is fixed on the outside of the main shaft, eccentric blocks are symmetrically installed on both sides of the main shaft, and the two eccentric blocks are located on both sides of the impeller, and a pressurizing port is installed in the middle of the bottom of the pressurizing box.

[0008] Preferably, a sealing gasket is fixed to the bottom end of the pressurizing box, and the sealing gasket is located outside the pressurizing port.

[0009] Preferably, a driving motor is fixed to one end of the main frame, and a ball screw is installed at the output end of the driving motor. The ball screw is located inside the main frame and has a bidirectional thread structure.

[0010] Preferably, a guide rod is provided below the ball screw, and two sets of clamping frames are slidably connected to the outer sides of the ball screw and the guide rod.

[0011] Preferably, the bottom end of the clamping frame is slidably connected to a support plate, and a plurality of groups of through holes are evenly arranged on the support plate.

[0012] Preferably, an adjusting motor is installed under one side of the main frame, and two sets of transmission wheels are installed in the main frame, one set of which is fixedly connected to the output end of the adjusting motor, and a rack is meshedly connected to the outer side of the transmission wheel, and the rack is fixedly connected to the detection box.

[0013] Preferably, guide grooves are symmetrically installed on both sides of the detection box, and the main frame is slidably connected to the detection box through the guide grooves.

[0014] The beneficial technical effects are:

[0015] By setting up a pressurizing mechanism, the gas pipe and the pressure vessel can be connected through the pressurizing mechanism, and the pressurizing port at the bottom of the pressurizing box enters the pressure vessel to transport gas, and the high-pressure gas transported by the gas pipe will first enter the pressurizing box and blow the impeller to drive the main shaft to rotate. During the rotation of the main shaft, the eccentric block will drive intermittent contact with the pressurizing box, thereby causing the pressurizing box to produce moving vibrations. Since the pressure vessel is in contact with the pressurizing box, the vibrations generated by the pressurizing box will be transmitted to the pressure vessel, causing the bubbles attached to its wall to fall off, and the bubbles can be moved to the water surface, which is convenient for staff to check and improves the inspection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a preferred embodiment of a pressure vessel sealing inspection device according to the utility model;

[0017] Figure 2 It is a schematic diagram of the positional relationship among the pressurizing box, the pressurizing port and the sealing gasket in a preferred embodiment of a pressure vessel sealing inspection device according to the utility model;

[0018] Figure 3 It is a schematic diagram of the connection relationship between the gas delivery pipe and the pressurizing mechanism in a preferred embodiment of a pressure vessel sealing inspection device according to the utility model;

[0019] Figure 4 A cross-sectional view of a preferred embodiment of a pressure vessel sealing inspection device according to the utility model;

[0020] Figure 5The figure is a schematic diagram of the connection relationship among a ball screw, a guide rod, a clamping frame and a support plate in a preferred embodiment of a pressure vessel sealing inspection device according to the utility model.

[0021] The following are the descriptions of the reference numerals:

[0022] 1. Detection box; 2. Main frame; 3. Air pump; 4. Air pipe; 5. Electric push rod; 6. Pressurizing mechanism; 601. Pressurizing box; 602. Main shaft; 603. Impeller; 604. Eccentric block; 605. Pressurizing port; 7. Sealing gasket; 8. Driving motor; 9. Ball screw; 10. Guide rod; 11. Clamping frame; 12. Support plate; 13. Adjusting motor; 14. Transmission wheel; 15. Rack; 16. Guide groove. DETAILED DESCRIPTION

[0023] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present invention are not limited thereto.

[0024] like Figure 1-Figure 5 As shown, a pressure vessel sealing inspection device provided in this embodiment includes a detection box 1, a main frame 2 is connected to the outside of the detection box 1, an air pump 3 is fixed to the middle of the top of the main frame 2, the air pump 3 can generate high-pressure gas, the bottom of the air pump 3 is connected to a gas pipe 4, the gas pipe 4 transports the high-pressure gas to a pressurized box 601, an electric push rod 5 is fixed to the middle of the bottom end of the main frame 2, the electric push rod 5 can adjust the height of the pressurized box 601, and a pressurizing mechanism 6 is fixed to the output end of the electric push rod 5, the pressurizing mechanism 6 includes a pressurized box 601 connected to the electric push rod 5, the pressurized box 601 can transmit vibration to the pressure vessel, and One end of the gas pipe 4 passes through the top of the pressurizing box 601, and a main shaft 602 is rotatably connected to the middle part of the pressurizing box 601. The main shaft 602 can rotate along the pressurizing box 601, and an impeller 603 is fixed on the outside of the main shaft 602. The impeller is driven by the high-pressure gas to drive the main shaft 602 to rotate along the pressurizing box 601. Eccentric blocks 604 are symmetrically installed on both sides of the main shaft 602. The eccentric blocks 604 can intermittently contact the pressurizing box 601, and the two eccentric blocks 604 are located on both sides of the impeller 603. A pressurizing port 605 is installed in the middle of the bottom end of the pressurizing box 601, and the pressure vessel is connected to the pressurizing box 601 through the pressurizing port 605.

[0025] like Figure 2-Figure 3 As shown, a sealing gasket 7 is fixed to the bottom end of the pressurizing box 601, and the sealing gasket 7 is located outside the pressurizing port 605. When the pressurizing box 601 is connected to the pressure container, the sealing gasket 7 can seal the connection position between the two.

[0026] like Figure 1 , Figure 4 and Figure 5As shown, a driving motor 8 is fixed at one end of the main frame 2, and a ball screw 9 is installed at the output end of the driving motor 8. The ball screw 9 is located inside the main frame 2. The ball screw 9 is a bidirectional thread structure, which can enable the driving motor 8 to drive the ball screw 9 to rotate inside the main frame 2.

[0027] like Figure 4-Figure 5 As shown, a guide rod 10 is arranged below the ball screw 9, and two groups of clamping frames 11 are slidably connected to the outer sides of the ball screw 9 and the guide rod 10, so that the ball screw 9 can drive the clamping frames 11 to move synchronously along the guide rod, and the pressure vessel is clamped and fixed by the two groups of clamping frames 11.

[0028] like Figure 4-Figure 5 As shown, the bottom end of the clamping frame 11 is slidably connected to a support plate 12 , and a plurality of through holes are evenly arranged on the support plate 12 , so that the pressure vessel can be supported by the support plate 12 , and water can spread to the top of the support plate 12 through the through holes.

[0029] like Figure 1 and Figure 4 As shown, an adjusting motor 13 is installed at the lower side of the main frame 2, and two groups of transmission wheels 14 are installed in the main frame 2, one of which is fixedly connected to the output end of the adjusting motor 13, and a rack 15 is meshedly connected to the outer side of the transmission wheel 14, and the rack 15 is fixedly connected to the detection box 1, so that the adjusting motor 13 can drive one group of transmission wheels 14 to rotate in the main frame 2, and the transmission wheel 14 is meshed with the rack 15 through teeth during the rotation process, thereby driving the main frame 2 to move outside the detection box 1, and can drive the other group of transmission wheels 14 to rotate during the movement.

[0030] like Figure 1 and Figure 4 As shown, guide grooves 16 are symmetrically installed on both sides of the detection box 1, and the main frame 2 is slidably connected to the detection box 1 through the guide grooves 16, so that the main frame 2 can move along the detection box 1 through the guide grooves 16, thereby ensuring stability during movement.

[0031] Working principle of the device: When the device is used, the staff places the pressure vessel in the middle above the support plate 12, and then the driving motor 8 on the main frame 2 drives the ball screw 9 to rotate in the main frame 2. During the rotation of the ball screw 9, it can drive the two groups of clamping frames 11 to move relatively along the guide rod 10, and the pressure vessel is clamped and fixed by the two groups of clamping frames 11. After the fixing is completed, the electric push rod 5 at the bottom end of the main frame 2 drives the pressurizing box 601 in the pressurizing mechanism 6 to move to the top of the pressure vessel, and the pressurizing port 605 enters the pressure vessel, and the connection between the pressurizing box 601 and the pressure vessel can be sealed by the sealing gasket 7;

[0032] After entering, the motor 13 is adjusted to drive one set of transmission wheels 14 to rotate in the main frame 2. The transmission wheels 14 are meshed with the rack 15 through the teeth during the rotation process, thereby driving the main frame 2 to move along the guide groove 16 outside the detection box 1, which can ensure the stability during the movement. During the movement, the other set of transmission wheels 14 can be driven to rotate, thereby immersing the support plate 12 and the pressure vessel into the water in the detection box 1;

[0033] After the immersion is completed, the air pump 3 at the top of the main frame 2 delivers high-pressure gas to the pressurized box 601 through the air pipe 4. The high-pressure gas is injected into the pressure vessel through the pressurization port 605 at the bottom of the pressurized box 601. Then the staff checks whether there are bubbles in the water, thereby realizing the detection of the sealing of the pressure vessel. During the detection process, the high-pressure gas delivered by the air pipe 4 will first enter the pressurized box 601 and blow the impeller 603 to drive the main shaft 602 to rotate. During the rotation, the main shaft 602 will drive the eccentric block 604 to intermittently contact the pressurized box 601, thereby causing the pressurized box 601 to produce moving vibration. Since the pressure vessel is in contact with the pressurized box 601, the vibration generated by the pressurized box 601 will be transmitted to the pressure vessel, causing the bubbles attached to its wall to fall off, and the bubbles can be moved to the water surface, which is convenient for the staff to check and improve the inspection quality.

[0034] The above are only further embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the scope disclosed by the present invention according to the technical solution and concept of the present invention, which fall within the protection scope of the present invention.

Claims

1. A pressure vessel sealing inspection device, characterized in that: The invention comprises a detection box (1), the outer side of the detection box (1) is connected to a main frame (2), an air pump (3) is fixed in the middle of the top end of the main frame (2), the bottom end of the air pump (3) is connected to an air pipe (4), an electric push rod (5) is fixed in the middle of the bottom end of the main frame (2), and a pressurizing mechanism (6) is fixed at the output end of the electric push rod (5), the pressurizing mechanism (6) comprises a pressurizing box (601) connected to the electric push rod (5), and the One end of the air delivery pipe (4) passes through the top of the pressurizing box (601), and a main shaft (602) is rotatably connected to the middle of the pressurizing box (601), an impeller (603) is fixed to the outside of the main shaft (602), eccentric blocks (604) are symmetrically installed on both sides of the main shaft (602), and the two eccentric blocks (604) are located on both sides of the impeller (603), and a pressurizing port (605) is installed in the middle of the bottom end of the pressurizing box (601).

2. A pressure vessel sealing inspection device according to claim 1, characterized in that: A sealing gasket (7) is fixed to the bottom end of the pressurizing box (601), and the sealing gasket (7) is located outside the pressurizing port (605).

3. A pressure vessel sealing inspection device according to claim 2, characterized in that: A driving motor (8) is fixed to one end of the main frame (2), and a ball screw (9) is installed at the output end of the driving motor (8); the ball screw (9) is located inside the main frame (2), and the ball screw (9) is a bidirectional thread structure.

4. A pressure vessel sealing inspection device according to claim 3, characterized in that: A guide rod (10) is arranged below the ball screw (9), and two groups of clamping frames (11) are slidably connected to the outer sides of the ball screw (9) and the guide rod (10).

5. A pressure vessel sealing inspection device according to claim 4, characterized in that: The bottom end of the clamping frame (11) is slidably connected to a support plate (12), and the support plate (12) is evenly provided with a plurality of groups of through holes.

6. A pressure vessel sealing inspection device according to claim 5, characterized in that: An adjusting motor (13) is installed below one side of the main frame (2), and two sets of transmission wheels (14) are installed inside the main frame (2), one set of which is fixedly connected to the output end of the adjusting motor (13), and a rack (15) is meshedly connected to the outer side of the transmission wheel (14), and the rack (15) is fixedly connected to the detection box (1).

7. A pressure vessel sealing inspection device according to claim 6, characterized in that: Guide grooves (16) are symmetrically installed on both sides of the detection box (1), and the main frame (2) is slidably connected to the detection box (1) through the guide grooves (16).

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