Supercritical pressure vessel

Abstract

The utility model discloses a supercritical pressure vessel which comprises a shell, a buckle cover is movably arranged on the upper end face of the shell, a first inclined face is arranged on the outer wall of the buckle cover and located at the lower end, a second inclined face is arranged on the inner wall of the shell and located at the upper end, and the first inclined face is located inside the second inclined face. A pressing ring is fixedly arranged at the upper end of the first inclined face and located on the outer wall of the buckle cover, the diameter of the outer wall of the pressing ring is equal to that of the outer wall of the shell, external threads are arranged at the upper end of the outer wall of the shell, and a fastening nut is arranged at the connecting position of the shell and the buckle cover. Therefore, a user can install the buckle cover at the upper end of the shell, enable the first inclined plane to enter the second inclined plane, then tighten the fastening nut to enable the check ring at the upper end of the fastening nut to abut against the pressing ring, at the moment, the first inclined plane can make close contact with the inner wall of the second inclined plane, and the sealing performance between the buckle cover and the shell is further improved. Air leakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure vessels, and more particularly to a supercritical pressure vessel. Background Art

[0002] A supercritical pressure vessel is a high-pressure container used to conduct chemical reactions or physical processes in a supercritical fluid state. A supercritical fluid is a fluid that, above its critical temperature and critical pressure, is in a unique state, neither completely liquid nor completely gaseous. In this state, the fluid exhibits properties intermediate between those of a liquid and a gas, possessing the high density of a liquid and the low viscosity of a gas. This makes supercritical fluids extremely useful in many industrial processes. Because the pressures in this supercritical fluid state are extremely high, containers are typically constructed from high-strength alloys or composite materials to withstand the immense pressures.

[0003] However, most of the existing pressure vessels have their covers fixed by bolts. This fixing method has a poor sealing effect and is prone to air leakage inside the container, resulting in the pressure vessel being unable to meet the reaction conditions.

[0004] Moreover, most of the existing pressure vessels are of an integrated structure. As a result, after the raw materials inside the container are taken out, it is difficult to clean the inner wall due to the overall closed structure of the container. Long-term use can easily cause corrosion to the inner wall, affecting the service life of the container. Utility Model Content

[0005] In response to the problems existing in the prior art, the present invention provides a supercritical pressure vessel to solve the technical problem mentioned in the background technology that most of the covers of the existing pressure vessels are fixed by bolts, which has a poor sealing effect and is prone to air leakage inside the container.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a supercritical pressure vessel, comprising a shell, a buckle cover movably provided on the upper end surface of the shell, a first inclined surface provided on the outer wall of the buckle cover and at the lower end, a second inclined surface provided on the inner wall of the shell and at the upper end, the first inclined surface being located inside the second inclined surface, a clamping ring fixedly provided on the upper end of the first inclined surface and located on the outer wall of the buckle cover, the outer wall diameter of the clamping ring being equal to the outer wall diameter of the shell, an external thread provided on the outer wall of the shell and at the upper end, a fastening nut provided at the connection position between the shell and the buckle cover, a retaining ring fixedly provided on the upper end of the fastening nut, the retaining ring being movably installed on the outer wall of the buckle cover and abutting against the upper end surface of the clamping ring, the fastening nut being threadedly connected to the shell via the external thread, and an inner liner being movably provided inside the shell.

[0007] The utility model is further configured such that placement blocks are provided on both sides of the inner liner, placement grooves are correspondingly provided on the inner wall of the shell, the placement blocks are located inside the placement grooves, the upper end faces of the placement blocks are provided with accommodating grooves, moving blocks are slidably provided inside the accommodating grooves, and handles are fixed on the upper ends of the moving blocks to facilitate positioning and installation of the inner liner.

[0008] The utility model is further configured such that connecting springs are fixedly provided on both sides of the lower end surface of the moving block, and the other ends of the connecting springs are fixedly connected to the bottom of the accommodating groove, so as to facilitate the pushing out of the handle and the disassembly of the inner liner.

[0009] The utility model is further configured such that a pressure relief pipe is fixedly provided on the upper end surface of the buckle cover and in the middle position, an air outlet pipe is provided on the outer wall of the pressure relief pipe, and a plurality of air outlet pipes are provided and are evenly distributed to facilitate reducing the pressure inside the device.

[0010] The utility model is further configured such that a piston is movably provided inside the pressure relief pipe, the outer wall of the piston is in close contact with the inner wall of the pressure relief pipe, a connecting rod is fixedly provided at the upper end of the piston, the upper end of the connecting rod passes through the pressure relief pipe and is provided with a lifting block, and the connecting rod and the pressure relief pipe are movably installed to facilitate the gradual discharge of pressure.

[0011] The utility model is further configured such that an electric push rod is fixedly provided on the upper end surface of the buckle cover, and an output end of the electric push rod is fixedly connected to the lifting block to facilitate the movement of the piston.

[0012] The present invention is further configured such that the handle abuts against the lower end surface of the first inclined surface.

[0013] The present invention is further configured such that a base is fixedly provided on the lower end surface of the shell, and an external connection hole is opened on the base to facilitate connection of the device with external equipment.

[0014] Beneficial effects:

[0015] Compared with the prior art, the present invention provides a supercritical pressure vessel with the following beneficial effects:

[0016] 1.1. By providing a first inclined surface, a shell and a fastening nut, the user can install the buckle cover to the upper end of the shell and make the first inclined surface enter the second inclined surface, and then tighten the fastening nut to make the retaining ring at its upper end abut against the clamping ring. At this time, the first inclined surface will be in close contact with the inner wall of the second inclined surface to further increase the sealing between the buckle cover and the shell to prevent air leakage. Compared with bolt connection, this design can not only increase the sealing of the container, but also facilitate subsequent disassembly and increase practicality.

[0017] 2. By setting the inner liner, moving block and handle, when the buckle cover is removed, the connecting spring will push the moving block out from the inside of the receiving groove. The user can lift the inner liner inside the shell upward through the handle on the upper end of the moving block to facilitate the removal of materials and the cleaning of the inner wall, thereby increasing the service life of the container.

[0018] 3. By setting up the air outlet pipe and the pressure relief pipe, when the operation ends, the user can control the electric push rod to slowly move the piston upward, so that the multiple air outlet pipes are gradually released, thereby reducing the pressure inside the shell to facilitate the subsequent removal of materials inside the container. This design can slowly reduce the pressure in the container to avoid damage caused by a sudden drop in pressure and increase the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall schematic diagram of the supercritical pressure vessel when not in use;

[0020] Figure 2 It is an overall cross-sectional view of a supercritical pressure vessel;

[0021] Figure 3 This is the exploded view of the installation of the shell and liner;

[0022] Figure 4 Exploded view of the installation of the inner tank, moving block, handle and connecting spring;

[0023] Figure 5 This is a schematic diagram of the installation of the piston, connecting rod and lifting block.

[0024] In the figure: 1. Shell; 2. Buckle cover; 3. First inclined surface; 4. Second inclined surface; 5. Pressure ring; 6. Fastening nut; 7. Retaining ring; 8. Inner liner; 9. Placement block; 10. Placement slot; 11. Accommodation slot; 12. Moving block; 13. Handle; 14. Connecting spring; 15. Pressure relief pipe; 16. Exhaust pipe; 17. Piston; 18. Connecting rod; 19. Lifting block; 20. Electric push rod; 21. Base; 22. External connection hole. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0028] See also Figure 1-5 A supercritical pressure vessel comprises a shell 1, a buckle cover 2 is movably provided on the upper end surface of the shell 1, a first inclined surface 3 is provided on the outer wall of the buckle cover 2 and at the lower end, a second inclined surface 4 is opened on the inner wall of the shell 1 and at the upper end, the first inclined surface 3 is located inside the second inclined surface 4, a clamping ring 5 is fixedly provided on the upper end of the first inclined surface 3 and on the outer wall of the buckle cover 2, the outer wall diameter of the clamping ring 5 is equal to the outer wall diameter of the shell 1, an external thread is provided on the outer wall of the shell 1 and at the upper end, a fastening nut 6 is provided at the connection position between the shell 1 and the buckle cover 2, a retaining ring 7 is fixed on the upper end of the fastening nut 6, the retaining ring 7 is movably installed on the outer wall of the buckle cover 2, and is against the upper end surface of the clamping ring 5, the fastening nut 6 is threadedly connected to the shell 1 through the external thread, and an inner liner 8 is movably provided inside the shell 1.

[0029] In this embodiment, placement blocks 9 are provided on both sides of the inner liner 8, and placement grooves 10 are correspondingly opened on the inner wall of the shell 1. The placement blocks 9 are located inside the placement grooves 10, and the upper end surfaces of the placement blocks 9 are provided with accommodating grooves 11. Moving blocks 12 are slidably provided inside the accommodating grooves 11. The upper ends of the moving blocks 12 are fixed with handles 13, and the lower end surfaces of the moving blocks 12 and on both sides are fixed with connecting springs 14. The other ends of the connecting springs 14 are fixedly connected to the bottom of the accommodating grooves 11, and the handles 13 are against the lower end surface of the first inclined surface 3.

[0030] More specifically, the user can install the buckle cover 2 to the upper end of the shell 1, and make the first inclined surface 3 enter the second inclined surface 4, and then tighten the fastening nut 6 to make the retaining ring 7 at its upper end resist the clamping ring 5. At this time, the first inclined surface 3 will be in close contact with the inner wall of the second inclined surface 4 to further increase the sealing between the buckle cover 2 and the shell 1 to prevent air leakage. After use, the user can remove the buckle cover 2 by removing the fastening nut 6. At this time, the connecting spring 14 will push the moving block 12 out of the inside of the accommodating groove 11. Then, the inner liner 8 inside the shell 1 can be lifted upward by the handle 13 at the upper end of the moving block 12 to facilitate the removal of materials and the cleaning of its inner wall, thereby increasing the service life of the container.

[0031] See also Figure 1 、 Figure 2 and Figure 5As an implementation method for relieving pressure on the device: a pressure relief pipe 15 is fixedly provided on the upper end surface of the buckle cover 2 and in the middle position, an air outlet pipe 16 is provided on the outer wall of the pressure relief pipe 15, and a plurality of air outlet pipes 16 are provided and are evenly distributed. A piston 17 is movably provided inside the pressure relief pipe 15, and the outer wall of the piston 17 is in close contact with the inner wall of the pressure relief pipe 15. A connecting rod 18 is fixedly provided on the upper end of the piston 17, and the upper end of the connecting rod 18 passes through the pressure relief pipe 15 and is provided with a lifting block 19. The connecting rod 18 is movably installed with the pressure relief pipe 15, and an electric push rod 20 is fixed on the upper end surface of the buckle cover 2, and the output end of the electric push rod 20 is fixedly connected to the lifting block 19.

[0032] Specifically, at the end of operation, the user can control the electric push rod 20 to slowly move the piston 17 upward, so that the multiple air outlet pipes 16 are gradually released, thereby reducing the pressure inside the shell 1 to facilitate the subsequent removal of materials inside the container. Through this design, the pressure inside the container can be slowly reduced to avoid damage caused by a sudden drop in pressure and increase the service life of the device.

[0033] Please refer to Figure 1 As a further embodiment of supporting the device: a base 21 is fixedly provided on the lower end surface of the shell 1, and an external connection hole 22 is opened on the base 21.

[0034] Specifically, the user can fix the device to the ground through the base 21 .

[0035] In summary, when the entire device is in use: when the shell 1 needs to be closed, the user can first install the buckle cover 2 to the upper end of the shell 1, and make the first inclined surface 3 enter the second inclined surface 4, and then tighten the fastening nut 6 to make the retaining ring 7 at its upper end abut against the clamping ring 5. At this time, the first inclined surface 3 will be in close contact with the inner wall of the second inclined surface 4 to further increase the sealing between the buckle cover 2 and the shell 1 to prevent air leakage. When the operation is finished, the user can control the electric push rod 20 to slowly move the piston 17 upward to gradually release the multiple air outlet pipes 16, thereby lowering the shell 1. The internal pressure is reduced to facilitate the subsequent taking of the material inside the container. Through this design, the pressure in the container can be slowly reduced to avoid damage caused by a sudden drop in pressure, thereby increasing the service life of the device. When the inner tank 8 needs to be cleaned, the user can remove the buckle cover 2 by removing the fastening nut 6. At this time, the connecting spring 14 will push the moving block 12 out of the inside of the receiving groove 11. After that, the inner tank 8 inside the shell 1 can be lifted upward by the handle 13 at the upper end of the moving block 12, so as to facilitate the taking of materials and the cleaning of its inner wall, thereby increasing the service life of the container.

[0036] Other parts of the present invention that are not described in detail belong to the prior art and will not be described in detail here.

[0037] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A supercritical pressure vessel comprising a shell (1), characterized in that: The upper end surface of the shell (1) is movably provided with a buckle cover (2), a first inclined surface (3) is provided on the outer wall of the buckle cover (2) and at the lower end, a second inclined surface (4) is opened on the inner wall of the shell (1) and at the upper end, the first inclined surface (3) is located inside the second inclined surface (4), a clamping ring (5) is fixedly provided at the upper end of the first inclined surface (3) and on the outer wall of the buckle cover (2), the outer wall diameter of the clamping ring (5) is equal to the outer wall diameter of the shell (1), an external thread is provided on the outer wall of the shell (1) and at the upper end, a fastening nut (6) is provided at the connection position between the shell (1) and the buckle cover (2), a retaining ring (7) is fixedly provided at the upper end of the fastening nut (6), the retaining ring (7) is movably installed with the outer wall of the buckle cover (2) and abuts against the upper end surface of the clamping ring (5), the fastening nut (6) is threadedly connected to the shell (1) through the external thread, and an inner liner (8) is movably provided inside the shell (1).

2. The supercritical pressure vessel according to claim 1, wherein: Both sides of the inner container (8) are provided with placement blocks (9), and the inner wall of the shell (1) is correspondingly provided with a placement groove (10). The placement blocks (9) are located inside the placement groove (10), and the upper end surface of the placement blocks (9) is provided with a receiving groove (11). The inside of the receiving groove (11) is slidably provided with a moving block (12), and the upper end of the moving block (12) is fixed with a handle (13).

3. The supercritical pressure vessel according to claim 2, wherein: Connecting springs (14) are fixedly provided on both sides of the lower end surface of the moving block (12), and the other ends of the connecting springs (14) are fixedly connected to the bottom of the accommodating groove (11).

4. The supercritical pressure vessel according to claim 1, wherein: A pressure relief pipe (15) is fixedly provided at the middle position on the upper end surface of the buckle cover (2), and an air outlet pipe (16) is provided on the outer wall of the pressure relief pipe (15). A plurality of air outlet pipes (16) are provided and are evenly distributed.

5. The supercritical pressure vessel according to claim 4, wherein: A piston (17) is movably provided inside the pressure relief pipe (15), and the outer wall of the piston (17) is in close contact with the inner wall of the pressure relief pipe (15). A connecting rod (18) is fixedly provided at the upper end of the piston (17). The upper end of the connecting rod (18) passes through the pressure relief pipe (15) and is provided with a lifting block (19). The connecting rod (18) is movably installed on the pressure relief pipe (15).

6. The supercritical pressure vessel according to claim 5, wherein: An electric push rod (20) is fixedly provided on the upper end surface of the buckle cover (2), and an output end of the electric push rod (20) is fixedly connected to the lifting block (19).

7. The supercritical pressure vessel according to claim 2, wherein: The handle (13) abuts against the lower end surface of the first inclined surface (3).

8. The supercritical pressure vessel according to claim 1, wherein: A base (21) is fixedly provided on the lower end surface of the shell (1), and an external connection hole (22) is provided on the base (21).

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