Tank airtightness testing apparatus and tank manufacturing device

Abstract

The utility model provides a kind of tank body airtightness test equipment and tank body manufacturing device, tank body airtightness test equipment includes support platform, inflation mechanism, push mechanism and test mechanism.Support platform is used to carry tank body.Inflation mechanism includes baffle and inflation pipeline, baffle is equipped with and is communicated with inflation pipeline inflation hole, inflation hole can be with the air inlet end of tank body and is connected to tank body and is inflated.Push mechanism and inflation mechanism are respectively arranged in the two sides of support platform opposite arrangement, and the moving part of push mechanism can be towards baffle, and tank body is limited between moving part and baffle.Test mechanism is used to test the airtightness of the welding end of tank body under inflation state.The baffle of inflation mechanism and push mechanism of the utility model can fix tank body and inflate fixed tank body.Test personnel can move tank body along support platform, avoid frequent movement tank body airtightness test equipment, improve tank body airtightness test efficiency and accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of airtightness testing technology, specifically relating to a tank airtightness testing device and a tank manufacturing apparatus. Background Technology

[0002] In the chemical industry, the quality of the tanks used to contain reactants has a significant impact on the reaction results. The tanks are typically welded together from the main structure and end caps. The quality of the welds directly affects the stability and safety of the reduction tank under high-temperature, vacuum conditions; therefore, rigorous airtightness testing of the welds is essential.

[0003] Currently, traditional tank airtightness testing equipment exhibits numerous drawbacks in practical operation. Existing equipment often employs a disc-like structure consisting of three tie rods fitted onto the tank, with a seal achieved by tightening three nuts. This connection method is not only cumbersome during installation and disassembly but also struggles to guarantee the uniformity and reliability of the seal. Furthermore, after completing the airtightness test on one tank, the testing equipment must be manually moved to the next tank to be tested, a process that consumes significant manpower and time. Especially in large-scale production enterprises where a large number of tanks need to be tested daily, manual handling significantly reduces production efficiency, increases the labor intensity of workers, and fails to meet the demands of efficient and continuous production. In addition, due to the inherent uncertainty of manual operation, different operators may vary in the force and method used when moving and installing the testing equipment, potentially affecting the accuracy and repeatability of the test results and failing to provide stable and reliable data support for tank quality control.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a tank airtightness testing device, which solves the problems of time-consuming and labor-intensive tank airtightness testing and inaccurate test results.

[0006] To achieve the above objectives, a specific embodiment of this utility model provides a tank airtightness testing device, which includes a support platform, an inflation mechanism, a pushing mechanism, and a testing mechanism. The support platform supports the tank, which includes a welded end and an air inlet end arranged opposite to each other. The inflation mechanism is located beside the support platform and includes a baffle and an inflation pipe. The baffle has an inflation hole connected to the inflation pipe, which can be controllably connected to the air inlet end of the tank to inflate it. The pushing mechanism and the inflation mechanism are respectively located on opposite sides of the support platform. The pushing mechanism includes a moving part that can be controllably moved towards the baffle and contact the welded end of the tank, thereby confining the tank between the moving part and the baffle. The testing mechanism is used to test the airtightness of the welded end of the tank in the inflated state.

[0007] In one or more embodiments of the present invention, the inflation mechanism further includes a flexible sealing gasket disposed on the side of the baffle facing the pushing mechanism.

[0008] In one or more embodiments of this utility model, the flexible sealing gasket has a through hole that communicates with the inflation hole.

[0009] In one or more embodiments of the present invention, the inflation mechanism further includes a pressure gauge connected to the inflation pipeline, the pressure gauge being used to test the air pressure of the tank and the inflation pipeline.

[0010] In one or more embodiments of this utility model, the testing mechanism includes a liquid storage tank, a pump body, and a nozzle. The input end of the pump body is connected to the liquid storage tank, and the output end of the pump body is connected to the nozzle. The nozzle faces the weld seam on the tank body and is used to spray the test liquid in the liquid storage tank onto the weld seam on the tank body.

[0011] In one or more embodiments of this utility model, the tank airtightness testing equipment further includes a roller disposed on the top of the support platform and used to support the tank, wherein the roller shaft is perpendicular to the arrangement direction of the inflation mechanism and the pushing mechanism.

[0012] In one or more embodiments of this utility model, the tank airtightness testing equipment further includes a weighing mechanism located at the bottom of the support platform.

[0013] In one or more embodiments of this utility model, the pushing mechanism includes a hydraulic cylinder, and the telescopic end of the hydraulic cylinder forms a moving part.

[0014] In one or more embodiments of this utility model, the flexible sealing gasket is made of foamed silicone.

[0015] In another aspect, this utility model also provides a tank manufacturing apparatus, which includes the aforementioned tank airtightness testing equipment and tank welding equipment. The tank welding equipment is used to weld end caps onto the tank body, and includes a welding track for supporting the tank body. The welding track is connected to the rollers of the tank airtightness testing equipment and extends along the same straight line.

[0016] Compared with existing technologies, the baffle and the moving part of the pushing mechanism of this invention can cooperate to fix the tank, and the inflation pipeline of the inflation mechanism can inflate the fixed tank. In addition, the tester can move the tank along the support platform, avoiding frequent movement of the tank airtightness testing equipment and improving the efficiency and accuracy of tank airtightness testing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a tank airtightness testing device in one embodiment of the present invention.

[0019] Explanation of main reference numerals: 1. Support platform; 2. Inflation mechanism; 21. Baffle; 22. Inflation pipeline; 23. Flexible sealing gasket; 24. Pressure gauge; 25. Electromagnetic three-way valve; 3. Pushing mechanism; 31. Hydraulic cylinder; 32. Bracket; 4. Testing mechanism; 41. Liquid storage tank; 42. Pump body; 43. Nozzle; 5. Roller; 6. Weighing sensor; 7. Tank body; 71. Air inlet end; 72. Welding end. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0021] In the description of this utility model, it should be understood that the terms "top", "bottom", "upper", "lower", 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.

[0022] Furthermore, the terms "second" and "first" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "second" or "first" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] Reference Figure 1 As shown, one embodiment of this application provides a tank airtightness testing device. The tank airtightness testing device uses the air-filling method to test the airtightness of the tank 7. The tank 7 includes a welded end 72 and an air inlet end 71 arranged opposite to each other. The air inlet end 71 allows external gas to enter the interior of the tank 7. The tank airtightness testing device is specifically used to test the airtightness of the welded end 72 of the tank 7.

[0024] Specifically, the tank airtightness testing equipment includes a support platform 1, an inflation mechanism 2, a pushing mechanism 3, and a testing mechanism 4. The support platform 1 supports the tank 7 and is constructed as a plate-like structure, approximately parallel to the horizontal plane. The inflation mechanism 2 and the pushing mechanism 3 are respectively located on opposite sides of the support platform 1 along the horizontal direction, i.e., the support platform 1 is located between the inflation mechanism 2 and the pushing mechanism 3. The inflation mechanism 2 includes a baffle 21 and an inflation pipe 22. The baffle 21 faces the pushing mechanism 3 and has an inflation hole connected to the inflation pipe 22. The inflation hole can be controllably connected to the air inlet end 71 of the tank 7 to inflate the tank 7. The pushing mechanism 3 includes a moving part that can be controllably moved towards the baffle 21. During movement, the moving part can contact the welded end 72 of the tank 7, thereby confining the tank 7 between the moving part and the baffle 21, effectively clamping and fixing the tank 7 through the moving part and the baffle 21. The testing mechanism 4 is used to test the airtightness of the welded end 72 of the tank 7 when it is in an inflated state.

[0025] In one embodiment, reference is made to Figure 1As shown, the inflation mechanism 2 also includes a flexible sealing gasket 23. The flexible sealing gasket 23 is located on the side of the baffle 21 facing the pushing mechanism 3. The flexible sealing gasket 23 has a through hole that communicates with the inflation port. The through hole can communicate with the air inlet end 71 of the tank 7 to deliver the test gas into the tank 7. When the air inlet end 71 of the tank 7 squeezes the flexible sealing gasket 23, the flexible sealing gasket 23 can not only act as a buffer, but also reduce the probability of air leakage at the contact point between the inflation mechanism 2 and the tank 7.

[0026] Furthermore, the cross-sectional dimension of the flexible sealing gasket 23 is larger than the cross-sectional dimension of the air inlet end 71 of the tank body 7, so that the flexible sealing gasket 23 can completely cover the air inlet end 71 of the tank body 7, further reducing the probability of air leakage at the contact point between the inflation mechanism 2 and the tank body 7.

[0027] Preferably, the flexible sealing gasket 23 is made of foamed silicone, and the thickness of the flexible sealing gasket 23 is approximately 15mm. It is fixed to the baffle 21 by adhesive.

[0028] In one embodiment, reference is made to Figure 1 As shown, the inflation mechanism 2 also includes a pressure gauge 24, which is connected to the inflation pipeline 22. The pressure gauge 24 is used to test the air pressure of the tank 7 and the inflation pipeline 22, so that the tester can quickly know the air pressure status of the tank 7 and the inflation pipeline 22 and control the air pressure of the tank 7 and the inflation pipeline 22 at a preset value.

[0029] Furthermore, the inflation mechanism 2 also includes a solenoid three-way valve 25. The pressure gauge 24 and the solenoid three-way valve 25 are respectively connected to different parts of the inflation pipeline 22. The solenoid three-way valve 25 has three ports: the first port is connected to the inflation source, the second port is connected to the inflation pipeline 22, and the third port is connected to the external environment. When the tank 7 is inflated, the first and second ports of the solenoid three-way valve 25 are connected, and the test gas is delivered from the inflation source into the tank 7. When the tank 7 is deflated, the second and third ports of the solenoid three-way valve 25 are connected, and the test gas is delivered from the tank 7 to the external environment.

[0030] Furthermore, compressed air can be used as the test gas, and the pressure of the compressed air can be controlled at around 0.6 MPa.

[0031] In one embodiment, reference is made to Figure 1As shown, the actuating mechanism 3 includes a bracket 32, a hydraulic cylinder 31, a hydraulic pump, a hydraulic valve, and an oil tank. The hydraulic cylinder 31 is fixed to the bracket 32, and its telescopic end forms a moving part. The hydraulic pump is connected to both the oil circuit within the hydraulic cylinder 31 and the oil tank. The hydraulic valve is located on the oil circuit between the hydraulic cylinder 31 and the oil tank. The hydraulic pump is a vane-type variable displacement pump with a maximum pressure of 8 MPa and a maximum thrust of 16 tons. The hydraulic valve is a 03-type three-position five-way solenoid directional valve, which keeps the hydraulic cylinder 31 in the neutral position.

[0032] In one embodiment, reference is made to Figure 1 As shown, the testing mechanism 4 includes a liquid storage tank 41, a pump body 42, and a nozzle 43. The input end of the pump body 42 is connected to the liquid storage tank 41, and the output end of the pump body 42 is connected to the nozzle 43. The nozzle 43 faces the weld seam on the tank body 7 and is used to spray the test liquid in the liquid storage tank 41 onto the weld seam on the tank body 7. The pump body 42 is controlled by a PLC control system. When the air pressure in the tank body 7 reaches the preset test pressure, the PLC control system automatically turns on the pump body 42 and sprays soapy water evenly onto the weld seam of the tank body 7.

[0033] Preferably, the pump body 42 is a submersible pump, and the pump body 42 is located in the liquid storage tank 41.

[0034] Preferably, soapy water is used as the test liquid.

[0035] Preferably, the testing unit 4 uses an intermittent spraying method to spray soapy water.

[0036] In one embodiment, reference is made to Figure 1 As shown, the tank airtightness testing equipment also includes multiple rollers 5 mounted on top of the support platform 1 to support the tank 7. The rollers 5 are mounted on bearing supports, and the rollers 5 are perpendicular to the arrangement direction of the inflation mechanism 2 and the pushing mechanism 3. When the tank 7 is placed on the rollers 5, it can roll along the rollers 5 under the push of the hydraulic cylinder 31, reducing the resistance to moving the tank 7.

[0037] Preferably, there are two rollers 5, and the diameter of the rollers 5 is approximately 64 mm.

[0038] In one embodiment, reference is made to Figure 1 As shown, the tank airtightness testing equipment also includes a weighing mechanism located at the bottom of the support platform 1. The weighing mechanism includes four load cells 6, each positioned at one of the four corners of the support platform 1. The four load cells 6 are fixed to two crossbeams made of 20# narrow-wing H-beams. The display instrument shows real-time weighing data, allowing testers to visually assess the weight of the tank 7. Furthermore, the rollers 5 on the support platform 1 prevent damage to the load cells 6 during the hydraulic cylinder 31's movement of the tank 7.

[0039] Reference Figure 1 As shown, one embodiment of this application provides a tank body 7 manufacturing apparatus, which includes the tank body airtightness testing equipment and tank body welding equipment as described in any of the above embodiments. The tank body welding equipment is used to weld the end caps onto the tank body 7. The tank body welding equipment includes a welding track for supporting the tank body 7. The welding track is connected to the roller 5 of the tank body airtightness testing equipment and extends along the same straight line. After the tank body 7 is welded, it can be directly moved along the welding track to the roller 5 for airtightness testing, thereby improving the manufacturing efficiency of the tank body 7.

[0040] It should be noted that the tank 7 in the above embodiments can be a reaction tank commonly used in the chemical industry, such as a magnesium reduction tank.

[0041] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tank airtightness testing device, characterized in that, The tank airtightness testing equipment includes: A support platform (1) is used to support a tank (7), the tank (7) including a welding end (72) and an air inlet end (71) arranged opposite to each other. An inflation mechanism (2) is located on the side of the support platform (1). The inflation mechanism (2) includes a baffle (21) and an inflation pipe (22). An inflation hole is provided on the baffle (21) and connected to the inflation pipe (22). The inflation hole can be controlled to connect with the air inlet (71) of the tank (7) to inflate the tank (7). The pushing mechanism (3) and the inflation mechanism (2) are respectively located on opposite sides of the support platform (1). The pushing mechanism (3) includes a moving part, which can be controlled to move toward the baffle (21) and contact the welding end (72) of the tank (7), thereby restricting the tank (7) between the moving part and the baffle (21). The testing mechanism (4) is used to test the airtightness of the welded end (72) of the tank (7) in the inflated state.

2. The tank airtightness testing equipment according to claim 1, characterized in that, The inflation mechanism (2) also includes a flexible sealing gasket (23) located on the side of the baffle (21) facing the push mechanism (3).

3. The tank airtightness testing equipment according to claim 2, characterized in that, The flexible sealing gasket (23) has a through hole that communicates with the inflation hole.

4. The tank airtightness testing equipment according to claim 2, characterized in that, The inflation mechanism (2) also includes a pressure gauge (24) connected to the inflation line (22), which is used to test the air pressure of the tank (7) and the inflation line (22).

5. The tank airtightness testing equipment according to claim 1, characterized in that, The testing mechanism (4) includes a storage tank (41), a pump body (42) and a nozzle (43). The input end of the pump body (42) is connected to the storage tank (41), and the output end of the pump body (42) is connected to the nozzle (43). The nozzle (43) faces the weld seam on the tank body (7) and is used to spray the test liquid in the storage tank (41) onto the weld seam on the tank body (7).

6. The tank airtightness testing equipment according to claim 1, characterized in that, The tank air tightness testing equipment also includes a roller (5) located on the top of the support platform (1) and used to support the tank (7). The roller (5) has its shaft perpendicular to the arrangement direction of the inflation mechanism (2) and the pushing mechanism (3).

7. The tank airtightness testing equipment according to claim 1, characterized in that, The tank airtightness testing equipment also includes a weighing mechanism located at the bottom of the support platform (1).

8. The tank airtightness testing equipment according to claim 1, characterized in that, The pushing mechanism (3) includes a hydraulic cylinder (31), the telescopic end of which forms a moving part.

9. The tank airtightness testing equipment according to claim 2, characterized in that, The flexible sealing gasket (23) is made of foamed silicone.

10. A can manufacturing apparatus, characterized in that, The tank manufacturing apparatus includes: The tank airtightness testing equipment as described in any one of claims 1 to 9; A tank welding device for welding a head onto a tank (7), the tank welding device including a welding track for supporting the tank (7), the welding track being connected to the roller (5) of the tank airtightness testing device and extending along the same straight line.

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