PET (Polyethylene Terephthalate) vacuum cover for welding seam vacuum detection

Abstract

The utility model relates to the technical field of vacuum covers, and discloses a PET vacuum cover for welding seam vacuum detection, which comprises a sealing base, a cover body is fixedly mounted on the outer wall of the top of the sealing base, a deflation valve is in threaded connection with the inner wall of the top of the cover body, an air inlet is fixedly mounted on the top of the sealing base, and a gas outlet is formed in the top of the sealing base. The inner wall of the air inlet is in threaded connection with an air pipe, and an air pump is installed on the outer wall of one end of the air pipe. According to the PET vacuum cover for welding seam vacuum detection, the two magnets are attached to each other, so that an electric signal is generated between the two magnets, the signal lamp displays red light, a person can know whether the cover body deforms or not according to the lamp body change of the signal lamp, and the bottom of the large iron sheet is fixed to the top of the cover body, so that when the cover body deforms under negative pressure, the cover body deforms under negative pressure; the large iron sheet drives the round sheet to slide on the inner wall of the cylinder, so that the magnets are separated from one another, the signal lamp is powered off and turned off, and personnel can overhaul and maintain the cover body.

Description

Technical Field

[0001] This utility model relates to the field of vacuum hood technology, specifically a PET vacuum hood for vacuum inspection of weld seams. Background Technology

[0002] The sealing performance test of welds is crucial to the quality of ship repair and construction. When testing the sealing performance of welds, soapy water is sprayed onto the weld, a sealing box is placed on the weld to be tested, the gas inside the sealing box is extracted to create a negative pressure state inside the sealing box, and then the sealing performance is determined by whether bubbles appear at the weld.

[0003] Existing PET vacuum hoods used for weld vacuum inspection are prone to deformation during prolonged use under negative pressure, making it impossible for the equipment to detect the deformation. This results in limitations of the equipment. Furthermore, the fact that the hood only uses a single outer shell to perform sealed negative pressure inspection at the weld reduces the rigidity of the hood and increases the possibility of cracking. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a PET vacuum cover for weld seam vacuum inspection, which has the advantages of vacuum cover deformation monitoring and increased cover protection, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a PET vacuum hood for weld vacuum inspection, comprising a sealing base, a hood body fixedly installed on the top outer wall of the sealing base, a vent valve threadedly connected to the top inner wall of the hood body, an air inlet fixedly installed on the top of the sealing base, an air pipe threadedly connected to the inner wall of the air inlet, an air pump installed on the outer wall of one end of the air pipe, a support rod fixedly installed on the top of the sealing base, a signal light fixedly installed at the bottom of the support rod, a cylinder fixedly installed at the bottom of the signal light, a round rod fixedly installed at the bottom of the signal light, a circular plate slidably connected to the inner wall of the cylinder, a magnet fixedly connected to the top of the circular plate, a large iron plate fixedly installed at the bottom of the circular plate, a steel rod fixedly installed in the inner cavity of the hood body, and a controller fixedly installed on the outer wall of the air pump.

[0006] As a preferred technical solution of this utility model: the controller and the air pump are electrically connected, and the outer wall of one end of the air pipe is threadedly connected to the inner wall of the air inlet.

[0007] As a preferred technical solution of this utility model: the magnet and the signal light are electrically connected, the number of magnets is two, and the other magnet is located at the bottom of the round rod, and the two magnets are in contact with each other.

[0008] As a preferred technical solution of this utility model: the bottom of the large iron sheet is fixed to the top of the cover, and the bottom area of ​​the large iron sheet is larger than the bottom area of ​​the circular piece.

[0009] As a preferred technical solution of this utility model: the outer wall of the steel rod is "X" shaped, and both outer walls of the steel rod are fixed to the inner cavity of the cover.

[0010] As a preferred technical solution of this utility model: the number of steel rods is several, and the several steel rods are evenly distributed in the inner cavity of the cover.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This PET vacuum chamber for weld seam vacuum inspection uses two magnets that are attached together to generate an electrical signal, which illuminates a red indicator light. Personnel can observe the changes in the indicator light to determine if the chamber has deformed. A large iron plate is fixed at the bottom to the top of the chamber. When the chamber deforms under negative pressure, the large iron plate causes a circular plate to slide along the inner wall of the cylinder, causing the magnets to separate and the indicator light to turn off. Personnel can then inspect and maintain the chamber.

[0013] 2. The PET vacuum chamber used for weld vacuum inspection has an "X"-shaped outer wall with steel rods installed on the inner wall of the chamber. This effectively disperses the force, protecting the inner wall of the chamber from damage and deformation when the air pump draws air from it. The steel rods are evenly distributed in the inner cavity of the chamber, increasing its rigidity and thus achieving all-round protection. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the cover structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the magnet structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the cylindrical structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the steel rod structure of this utility model.

[0019] In the diagram: 1. Sealed base; 2. Cover; 3. Support rod; 4. Large iron plate; 5. Cylinder; 6. Air pipe; 7. Air pump; 8. Vent valve; 9. Steel rod; 10. Signal light; 11. Round rod; 12. Round plate; 13. Magnet; 14. Air inlet; 15. Controller. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5 A PET vacuum chamber for weld vacuum inspection includes a sealing base 1, a chamber 2 fixedly mounted on the top outer wall of the sealing base 1, a vent valve 8 threadedly connected to the top inner wall of the chamber 2, an air inlet 14 fixedly mounted on the top of the sealing base 1, an air pipe 6 threadedly connected to the inner wall of the air inlet 14, an air pump 7 mounted on the outer wall of one end of the air pipe 6, a support rod 3 fixedly mounted on the top of the sealing base 1, a signal light 10 fixedly mounted on the bottom of the support rod 3, a cylinder 5 fixedly mounted on the bottom of the signal light 10, a round rod 11 fixedly mounted on the bottom of the signal light 10, a circular plate 12 slidably connected to the inner wall of the cylinder 5, a magnet 13 fixedly connected to the top of the circular plate 12, a large iron plate 4 fixedly mounted on the bottom of the circular plate 12, a steel rod 9 fixedly mounted in the inner cavity of the chamber 2, and a controller 15 fixedly mounted on the outer wall of the air pump 7.

[0022] In the above structure, by installing a sealing base 1 and having the sealing base 1 in contact with the ground, the inner wall of the cover 2 is sealed when inspecting the weld.

[0023] In a preferred embodiment: the controller 15 is electrically connected to the air pump 7, and the outer wall of one end of the air pipe 6 is threadedly connected to the inner wall of the air inlet 14;

[0024] In the above structure, the controller 15 is used to rotate the air pipe 6 and the air inlet 14 to achieve a threaded connection. The external force controls the controller 15, so that the air pump 7 generates negative pressure by adsorbing through the inner wall of the air pipe 6 to detect the weld seam of the inner wall of the cover 2. When the equipment exhausts, the external force is used to rotate the vent valve 8 so that the vent valve 8 exhausts the gas on the inner wall of the cover 2.

[0025] In a preferred embodiment: an electrical connection is formed between the magnet 13 and the signal light 10, and there are two magnets 13, with the other magnet 13 located at the bottom of the round rod 11, and the two magnets 13 are in contact with each other;

[0026] In the above structure, the two magnets 13 are attached together, so that an electrical signal is generated between the two magnets 13, and the signal light 10 displays a red light. Personnel can understand whether the cover 2 has deformed by the change of the light body of the signal light 10.

[0027] In a preferred embodiment: the bottom of the large iron plate 4 is fixed to the top of the cover 2, and the bottom area of ​​the large iron plate 4 is larger than the bottom area of ​​the circular plate 12.

[0028] In the above structure, the bottom of the large iron plate 4 is fixed to the top of the cover 2. When the cover 2 is deformed by negative pressure, the large iron plate 4 drives the circular plate 12 to slide on the inner wall of the cylinder 5, causing the magnets 13 to separate from each other. The signal light 10 is then powered off and turned off, allowing personnel to inspect and maintain the cover 2.

[0029] In a preferred embodiment: the outer wall of the steel rod 9 is "X" shaped, and both outer walls of the steel rod 9 are fixed to the inner cavity of the cover 2;

[0030] In the above structure, the outer wall of the steel rod 9 is "X" shaped. The steel rod 9 is installed on the inner wall of the cover 2, which can effectively disperse the force, so that when the air pump 7 draws air from the inner wall of the cover 2, it can protect against damage and deformation.

[0031] In a preferred embodiment: the number of steel rods 9 is several, and the several steel rods 9 are evenly distributed in the inner cavity of the cover 2;

[0032] In the above structure, several steel rods 9 are evenly distributed in the inner cavity of the cover 2, so that the steel rods 9 provide all-round protection for the cover 2 and increase the stability of the equipment.

[0033] Working principle: The external force controls the controller 15, causing the air pump 7 to generate negative pressure through the inner wall of the air pipe 6, which detects the weld seams on the inner wall of the cover 2. When the equipment exhausts gas, the external force rotates the vent valve 8, allowing the gas to be vented from the inner wall of the cover 2. The two magnets 13 are brought together, generating an electrical signal between them, causing the indicator light 10 to display a red light. Personnel can observe the changes in the indicator light 10 to determine if the cover 2 has deformed. The large iron plate 4 is fixed to the top of the cover 2 by its bottom, ensuring the cover remains in place. When negative pressure deformation occurs, the large iron plate 4 drives the circular plate 12 to slide on the inner wall of the cylinder 5, causing the magnets 13 to separate from each other, and the signal light 10 to be powered off and turned off. Personnel can then inspect and maintain the enclosure 2. The outer wall of the steel rod 9 is "X" shaped. The steel rod 9 is installed on the inner wall of the enclosure 2, which can effectively disperse the force, so that when the air pump 7 pumps air from the inner wall of the enclosure 2, it can protect against damage and deformation. Several steel rods 9 are evenly distributed in the inner cavity of the enclosure 2, so that several steel rods 9 can provide all-round protection for the enclosure 2.

[0034] 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 PET vacuum hood for weld vacuum inspection, comprising a sealing base (1), characterized in that: A cover (2) is fixedly installed on the top outer wall of the sealing base (1). A vent valve (8) is threadedly connected to the top inner wall of the cover (2). An air inlet (14) is fixedly installed on the top of the sealing base (1). An air pipe (6) is threadedly connected to the inner wall of the air inlet (14). An air pump (7) is installed on the outer wall of one end of the air pipe (6). A support rod (3) is fixedly installed on the top of the sealing base (1). A signal light (10) is fixedly installed at the bottom of the support rod (3). A cylinder (5) is fixedly installed at the bottom of the signal light (10). A round rod (11) is fixedly installed at the bottom of the signal light (10). A circular piece (12) is slidably connected to the inner wall of the cylinder (5). A magnet (13) is fixedly connected to the top of the circular piece (12). A large iron piece (4) is fixedly installed at the bottom of the circular piece (12). A steel rod (9) is fixedly installed in the inner cavity of the cover (2). A controller (15) is fixedly installed on the outer wall of the air pump (7).

2. The PET vacuum chamber for weld vacuum inspection according to claim 1, characterized in that: The controller (15) is electrically connected to the air pump (7), and the outer wall of one end of the air pipe (6) is threadedly connected to the inner wall of the air inlet (14).

3. A PET vacuum chamber for weld vacuum inspection according to claim 2, characterized in that: The magnet (13) is electrically connected to the signal light (10). There are two magnets (13), and the other magnet (13) is located at the bottom of the round rod (11). The two magnets (13) are in contact with each other.

4. A PET vacuum chamber for weld vacuum inspection according to claim 1, characterized in that: The bottom of the large iron sheet (4) is fixed to the top of the cover (2), and the bottom area of ​​the large iron sheet (4) is larger than the bottom area of ​​the circular piece (12).

5. A PET vacuum chamber for weld vacuum inspection according to claim 4, characterized in that: The outer wall of the steel rod (9) is "X" shaped, and both sides of the outer wall of the steel rod (9) are fixed to the inner cavity of the cover (2).

6. A PET vacuum chamber for weld vacuum inspection according to claim 1, characterized in that: The number of steel rods (9) is several, and the several steel rods (9) are evenly distributed in the inner cavity of the cover (2).

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