A pressure-bearing cover pressure test tooling

Abstract

A pressure-bearing cover pressure testing tooling. The bottom of the pressure-bearing cover is open, and an air inlet hole and multiple mounting holes are formed on the pressure-bearing cover. An exhaust pipe is hermetically fixed on the pressure-bearing cover. The pressure testing tooling includes a bottom plate, a plugging unit, an air inlet unit, and multiple press-fitting hinge-mounted frames. The top surface of the bottom plate fits and seals the opening at the bottom of the pressure-bearing cover, and multiple press-fitting hinge-mounted frames are hinge-connected on the top surface of the bottom plate. The bottom of the air inlet unit is hermetically connected to the air inlet hole, and the top of the air inlet unit is tightly pressed by the press-fitting hinge-mounted frames. The plugging unit is adjustably connected to the exhaust pipe. A plugging joint is press-fitted and hermetically connected in the mounting hole of the pressure-bearing cover, and the top of the plugging joint is elastically buffer-connected to the press-fitting hinge-mounted frame. This pressure testing tooling can conduct a separate pressure test on the pressure-bearing cover without connecting the cover to the tank for an overall pressure test, greatly reducing the testing time, testing cost, and rejection rate.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical tooling, and particularly to a pressure testing tooling for a pressure-bearing cover. Background Art

[0002] When machining a pressure-bearing workpiece is completed, it is often necessary to conduct a pressure test on its airtightness. Since there may be defects such as dimensional defects, internal air holes, and sand holes in the pressure-bearing workpiece, especially after the production of the pressure-bearing cover is completed, which may cause leakage. Therefore, it is necessary to conduct a sealing test on it before installation to select unqualified pressure-bearing covers. Existing production enterprises generally entrust professional testing institutions for testing or conduct an overall pressure test on the entire pressure-bearing equipment after processing. This method is likely to result in a high scrap rate, and only the cover and the pressure-bearing tank body can be scrapped together, resulting in high transportation costs, testing costs, and production costs. At the same time, due to the timeliness of the testing institution, the pressure-bearing cover cannot be delivered to the enterprise on time, resulting in the enterprise being unable to produce, affecting production efficiency, ultimately resulting in a long production cycle, and reducing the competitiveness of the enterprise.

[0003] Through a public patent search, no relevant comparative documents were found. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a pressure testing tooling for a pressure-bearing cover. This pressure testing tooling can conduct a separate pressure test on the pressure-bearing cover without connecting the cover to the tank body for an overall pressure test, greatly reducing the testing time, testing cost, and scrap rate.

[0005] A pressure testing tooling for a pressure-bearing cover, the bottom of the pressure-bearing cover is open, the pressure-bearing cover is provided with an air inlet hole and a plurality of mounting holes, and an exhaust pipe is fixedly sealed on the pressure-bearing cover. The pressure testing tooling includes a bottom plate, a plugging unit, an air inlet unit, and a plurality of press-fitting hinge frames. The top surface of the bottom plate fits and seals the opening at the bottom of the pressure-bearing cover, and a plurality of press-fitting hinge frames are hingedly connected to the top surface of the bottom plate; the bottom of the air inlet unit is hermetically connected to the air inlet hole, and the top of the air inlet unit is tightly pressed by the press-fitting hinge frames; the plugging unit is adjustably connected to the exhaust pipe; a plugging joint is press-fitted and hermetically connected in the mounting hole of the pressure-bearing cover, and the top of the plugging joint is elastically and buffer-connected to the press-fitting hinge frame.

[0006] Moreover, the press-fitting hinge frame includes a horizontal hinge rod, a vertical hinge frame, and a plurality of hinge supports. The hinge supports are all fixedly installed on the bottom plate; one end of the horizontal hinge rod and the bottom of the vertical hinge frame are respectively hingedly connected to the hinge supports on both sides of the pressure-bearing cover, and the upper part of the vertical hinge frame is sleeved on the other end of the horizontal hinge rod; a top bolt penetrates through and is threadedly connected to the top of the vertical hinge frame, and the bottom of the top bolt is limited and supported on the top surface of the horizontal hinge rod.

[0007] Moreover, the exhaust pipe of the pressure-bearing cover is an L-shaped pipe. One end of the exhaust pipe penetrates and is fixedly sealed on the pressure-bearing cover, and the other end of the exhaust pipe is adjustably connected with a plugging unit; the plugging unit includes a tension support block and a plugging screw. One side wall of the tension support block is movably sleeved on the outer wall of the bent part of the exhaust pipe, and the plugging screw is threaded and penetrates through the other side wall of the tension support block; a plugging piece for plugging the exhaust pipe is fixedly installed at one end of the plugging screw located inside the tension support block.

[0008] Moreover, the plugging joint includes a fixed sleeve, a sleeve rod, a top pressure spring and a conical rubber plug. The fixed sleeve is fixedly installed on the bottom surface of the horizontal hinge rod, and the sleeve rod is coaxially and slidably inserted through the fixed sleeve; the fixed end of the sleeve rod penetrates upward through the fixed sleeve and is threadedly connected with the horizontal hinge rod, and a top pressure spring is sleeved on the sliding end of the fixed sleeve; the top of the top pressure spring is elastically supported on the inner wall of the fixed sleeve, and the bottom of the top pressure spring is elastically supported on the nut at the sliding end of the fixed sleeve.

[0009] Moreover, the air intake unit includes a filter and an air intake nozzle. The bottom of the filter is hermetically inserted into the air intake hole, the top of the filter is press-fitted and connected by the bottom surface of the horizontal hinge rod, and an air intake nozzle is fixedly installed on the side wall of the filter.

[0010] The advantages and technical effects of the present invention are:

[0011] A pressure test tool for a pressure-bearing cover of the present invention provides end face sealing for the bottom opening of the pressure-bearing cover through the bottom plate, and provides hinge support for a plurality of press-fitting hinge frames by the bottom plate, wherein:

[0012] 1. The horizontal hinge rod in the press-fitting hinge frame provides top pressure sealing support for the filter and the plugging joint, and the vertical hinge frame in the press-fitting hinge frame provides locking and limiting for the horizontal hinge rod.

[0013] 2. The plugging unit is fixedly connected to the exhaust pipe through the tension support block, and the exhaust end of the exhaust pipe is plugged by the plugging screw and the plugging piece of the plugging unit. The advantage of this structure is that it can be applied to plug exhaust pipes of different sizes.

[0014] 3. The installation hole is plugged by the plugging joint. The conical rubber plug of the plugging joint can be closely attached to the inner wall of the installation hole to form an effective seal. The fixed sleeve of the plugging joint provides limiting support for the sleeve rod, and the top pressure spring provides elastic buffer support for the sleeve rod and the conical rubber plug. On the premise of ensuring the tight seal of the installation hole, it is avoided that the pressing force of the horizontal hinge rod is too large, which may cause the pressure-bearing cover to be sunken and deformed, resulting in pressure leakage at the end face seal between the pressure-bearing cover and the bottom plate.

[0015] 4. Pressurize the inside of the pressure-bearing cover through the air inlet nozzle and filter of the air inlet unit, and the filter is tightly pressed by a horizontally hinged rod to ensure the effective seal between the bottom of the filter and the air inlet hole.

[0016] A pressure test tool for a pressure-bearing cover of the present invention can independently detect the pressure resistance performance of the pressure-bearing cover, effectively detect whether there are internal air holes and sand holes in the pressure-bearing cover, and there is no need to install the pressure-bearing cover on the pressure-bearing tank for detection, effectively reducing the scrap rate and detection time. It is a pressure test tool with high creativity. Brief Description of the Drawings

[0017] Figure 1 is a three-dimensional view of the present invention;

[0018] Figure 2 is a side view of the present invention;

[0019] Figure 3 is a top view of the present invention;

[0020] Figure 4 is Figure 2 a cross-sectional view of section A-A in

[0021] Figure 5 is Figure 3 a cross-sectional view of section B-B in

[0022] In the figure: 1 - pressure-bearing cover; 2 - plugging unit; 3 - pressing and hinged frame; 4 - filter; 5 - bottom plate; 6 - hinged support; 7 - vertically hinged frame; 8 - tightening bolt; 9 - horizontally hinged rod; 10 - air inlet nozzle; 11 - plugging screw; 12 - fixed sleeve; 13 - pressing spring; 14 - conical rubber plug; 15 - sleeve rod; 16 - exhaust pipe; 17 - plugging piece; 18 - tension support block. Detailed Description of the Invention

[0023] In order to further understand the content, features and effects of the present invention, the following embodiments are exemplified and described in detail in conjunction with the drawings. It should be noted that this embodiment is descriptive and not restrictive, and the protection scope of the present invention cannot be limited thereby.

[0024] A pressure-bearing cover pressure test tooling. The bottom of the pressure-bearing cover 1 is open, and air inlet holes and a plurality of mounting holes are formed in the pressure-bearing cover. An exhaust pipe 16 is fixedly sealed on the pressure-bearing cover. The pressure test tooling includes a bottom plate 5, a plugging unit 2, an air inlet unit, and a plurality of press-fitting hinge frames 3. The top surface of the bottom plate fits and seals the opening at the bottom of the pressure-bearing cover, and a plurality of press-fitting hinge frames are hingedly connected to the top surface of the bottom plate. The bottom of the air inlet unit is hermetically connected to the air inlet hole, and the top of the air inlet unit is tightly pressed by the press-fitting hinge frames. The plugging unit is adjustably connected to the exhaust pipe. A plugging joint is press-fitted and hermetically connected in the mounting hole of the pressure-bearing cover, and the top of the plugging joint is elastically and cushioningly connected to the press-fitting hinge frame.

[0025] Moreover, the press-fitting hinge frame includes a horizontal hinge rod 9, a vertical hinge frame 7, and a plurality of hinge supports 6. The hinge supports are fixedly mounted on the bottom plate. One end of the horizontal hinge rod and the bottom of the vertical hinge frame are respectively hingedly connected to the hinge supports on both sides of the pressure-bearing cover. The upper part of the vertical hinge frame is sleeved on the other end of the horizontal hinge rod. A top bolt 8 penetrates and is threadedly connected to the top of the vertical hinge frame, and the bottom of the top bolt is limited and supported on the top surface of the horizontal hinge rod.

[0026] Moreover, the exhaust pipe of the pressure-bearing cover is an L-shaped pipe. One end of the exhaust pipe penetrates and is fixedly sealed on the pressure-bearing cover, and the other end of the exhaust pipe is adjustably connected to the plugging unit. The plugging unit includes a tension support block 18 and a plugging screw 11. One side wall of the tension support block is movably sleeved on the outer wall of the bent part of the exhaust pipe, and the plugging screw is threadedly penetrated and connected to the other side wall of the tension support block. A plugging piece 17 for plugging the exhaust pipe is fixedly mounted at one end of the plugging screw located inside the tension support block.

[0027] Moreover, the plugging joint includes a fixed sleeve 12, a sleeve rod 15, a top pressure spring 13, and a conical rubber plug 14. The fixed sleeve is fixedly mounted on the bottom surface of the horizontal hinge rod, and the sleeve rod is coaxially and slidably penetrated and installed in the fixed sleeve. The fixed end of the sleeve rod penetrates upward through the fixed sleeve and is threadedly connected to the horizontal hinge rod, and a top pressure spring is sleeved on the sliding end of the fixed sleeve. The top of the top pressure spring is elastically supported on the inner wall of the fixed sleeve, and the bottom of the top pressure spring is elastically supported on the nut at the sliding end of the fixed sleeve.

[0028] Moreover, the air inlet unit includes a filter 4 and an air inlet nozzle 10. The bottom of the filter is hermetically inserted into the air inlet hole, the top of the filter is press-fitted and connected to the bottom surface of the horizontal hinge rod, and an air inlet nozzle is fixedly mounted on the side wall of the filter.

[0029] In addition, optionally, the filter and the conical rubber plug are both mature products in the prior art.

[0030] In order to more clearly illustrate the specific implementation manners of the present invention, an embodiment is provided below:

[0031] For the pressure test tooling of the pressure-bearing cover of the present invention, when installing the workpiece, the pressure-bearing cover needs to be fitted and buckled on the bottom plate. Then, a conical rubber plug is inserted into the installation hole of the pressure-bearing cover, a filter is hermetically inserted into the air inlet hole of the pressure-bearing cover, and a plugging sleeve is tightened on the exhaust pipe of the pressure-bearing cover, so that the tension fixing block is fixed on the exhaust pipe and the exhaust end of the exhaust pipe is blocked by a plugging piece. Then, a plurality of horizontal hinge rods are fixedly sleeved by a vertical hinge rod. It should be noted that when the horizontal hinge rod is pressed down, it is necessary to ensure that the nut at the bottom of the sleeve rod cooperates with the nut at the top of the conical rubber plug to be tightly pressed, and no dislocation should occur. After the installation is completed, the air inlet nozzle of the filter is connected to the air supply equipment in the prior art to pressurize the closed space between the pressure-bearing cover and the bottom plate to detect whether there are internal air holes and sand holes in the pressure-bearing cover.

[0032] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A pressure-bearing cover pressure testing tooling. The bottom of the pressure-bearing cover is open, and an air inlet hole and multiple mounting holes are formed in the pressure-bearing cover. An exhaust pipe is hermetically fixed on the pressure-bearing cover. It is characterized in that: The pressure testing tooling includes a bottom plate, a plugging unit, an air inlet unit and multiple press-fitting hinge frames. The top surface of the bottom plate fits and seals the opening at the bottom of the pressure-bearing cover, and multiple press-fitting hinge frames are hingedly connected to the top surface of the bottom plate. The bottom of the air inlet unit is hermetically connected to the air inlet hole, and the top of the air inlet unit is tightly pressed by the press-fitting hinge frames. The plugging unit is adjustably connected to the exhaust pipe. A plugging joint is press-fitted and hermetically connected in the mounting hole of the pressure-bearing cover, and the top of the plugging joint is elastically and buffer-connected to the press-fitting hinge frame. The press-fitting hinge frame includes a horizontal hinge rod, a vertical hinge frame and multiple hinge supports. The hinge supports are all fixed on the bottom plate. One end of the horizontal hinge rod and the bottom of the vertical hinge frame are respectively hingedly connected to the hinge supports on both sides of the pressure-bearing cover. The upper part of the vertical hinge frame is sleeved on the other end of the horizontal hinge rod. A tightening bolt penetrates and is threadedly connected to the top of the vertical hinge frame, and the bottom of the tightening bolt is limited and supported on the top surface of the horizontal hinge rod. The air inlet unit includes a filter and an air inlet nozzle. The bottom of the filter is hermetically inserted into the air inlet hole, the top of the filter is press-fitted and connected to the bottom surface of the horizontal hinge rod, and an air inlet nozzle is fixed on the side wall of the filter.

2. The pressure testing tooling for a pressure-bearing cover according to claim 1, It is characterized in that: The exhaust pipe of the pressure-bearing cover is an L-shaped pipe. One end of the exhaust pipe penetrates and is hermetically fixed on the pressure-bearing cover, and the other end of the exhaust pipe is adjustably connected to a plugging unit. The plugging unit includes an opposed support block and a plugging screw. One side wall of the opposed support block is movably sleeved on the outer wall of the bent part of the exhaust pipe, and the plugging screw is threaded and penetrates through the other side wall of the opposed support block. A plugging piece for plugging the exhaust pipe is fixed at one end of the plugging screw located inside the opposed support block.

3. The pressure testing tooling for a pressure-bearing cover according to claim 1, It is characterized in that: The plugging joint includes a fixed sleeve, a sleeve rod, a top pressure spring and a conical rubber plug. The fixed sleeve is fixed on the bottom surface of the horizontal hinge rod, and the sleeve rod is coaxially and slidably inserted through the fixed sleeve. The fixed end of the sleeve rod penetrates upward through the fixed sleeve and is threadedly connected to the horizontal hinge rod, and a top pressure spring is sleeved on the sliding end of the fixed sleeve. The top of the top pressure spring is elastically supported on the inner wall of the fixed sleeve, and the bottom of the top pressure spring is elastically supported on the nut at the sliding end of the fixed sleeve.

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