High-pressure container

Abstract

The invention discloses a high-pressure container, and relates to the technical field of pressure containers. Comprising a cylindrical and hollow high-pressure cylinder, and the top of the high-pressure cylinder is provided with an opening; the wing plate is arranged on the outer edge of the opening of the high-pressure cylinder, and the wing plate and the high-pressure cylinder are integrally formed; the size of the upper end cover is matched with that of the high-pressure cylinder, and the upper end cover is arranged at the top of the high-pressure cylinder; the bevel flange is arranged on the outer edge of the upper end cover, the bevel flange and the upper end cover are integrally formed, the size of the bevel flange is matched with that of the wing plate, and the end, close to the wing plate, of the bevel flange inclines, so that the end, away from the high-pressure cylinder, of the bevel flange does not make contact with the wing plate; a plurality of corresponding bolt holes are evenly distributed in the bevel flange and the wing plate, and the bevel flange and the wing plate are connected through bolts. The high-pressure container is simple in structure, low in cost and excellent in sealing performance, and the problem that in the prior art, flange sealing fails can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure vessels, and in particular to a high-pressure vessel. Background Art

[0002] Existing high-pressure containers usually consist of an upper cover, a circular high-pressure cylinder and a lower cover. The upper cover and the circular high-pressure cylinder are connected by flange bolts, and the lower cover and the circular high-pressure cylinder are also connected by flange bolts. Under the action of high internal pressure, the flange of the upper cover of the container will bend upward, and the flange of the lower cover will bend downward. This deformation will cause the flange sealing surface to open wider, eventually causing the flange seal to fail, posing a safety hazard of high-pressure leakage.

[0003] The current technical means are mainly concentrated in the following two aspects:

[0004] 1) Increasing flange thickness: The deformation resistance can be improved by thickening the flange, but this not only increases the manufacturing cost, but also significantly increases the overall weight of the container, limiting its application in portable devices or weight-sensitive devices.

[0005] 2) Use high-strength materials: Use high-strength alloy materials or composite materials to make flanges to improve compression and deformation resistance, but the material cost is extremely high and the processing technology is complicated, which limits its large-scale promotion. Summary of the invention

[0006] The main purpose of the present invention is to provide a high pressure container to solve the above problems.

[0007] To achieve the above object, the present invention provides a high pressure container, comprising:

[0008] A high-pressure cylinder, which is cylindrical and hollow, and has an opening at the top;

[0009] A wing plate, the wing plate is arranged on the outer edge of the opening of the high-pressure cylinder, and the wing plate is integrally formed with the high-pressure cylinder;

[0010] An upper end cover, the size of which is adapted to the high-pressure cylinder, and the upper end cover is arranged on the top of the high-pressure cylinder;

[0011] A bevel flange, the bevel flange is arranged on the outer edge of the upper end cover, the bevel flange is integrally formed with the upper end cover, the size of the bevel flange is adapted to the wing plate, and the end of the bevel flange close to the wing plate is inclined so that the end of the bevel flange away from the high-pressure cylinder does not contact the wing plate;

[0012] The bevel flange and the wing plate are evenly distributed with a plurality of corresponding bolt holes, and the bevel flange and the wing plate are connected by bolts.

[0013] Furthermore, the bottom of the high-pressure cylinder is open, the structure of the bottom of the high-pressure cylinder is the same as the structure of the top, and a lower end cover is provided at the bottom of the high-pressure cylinder, and the structure of the lower end cover is the same as the upper end cover.

[0014] Furthermore, the method for calculating the inclination angle of the bevel flange comprises the following steps:

[0015] S1: Determine the working pressure of the high-pressure cylinder during actual use and the mechanical properties of the bevel flange;

[0016] S2: The maximum displacement difference of the warping deformation of the bevel flange is obtained by finite element analysis or theoretical calculation of the working pressure and mechanical properties;

[0017] S3: Measure or design the contact surface width of the bevel flange;

[0018] S4: Calculate the initial inclination angle of the bevel flange according to the data obtained from steps S1 to S3.

[0019] Furthermore, the calculation formula for the inclination angle of the bevel flange is:

[0020] θ=arctan(△ / L),

[0021] Where:

[0022] θ: initial inclination angle of the bevel flange;

[0023] Δ: Maximum displacement difference of warping deformation of bevel flange;

[0024] L: Width of the contact surface of the bevel flange.

[0025] Furthermore, the mechanical properties of the bevel flange are elastic modulus and Poisson's ratio.

[0026] The present invention has the following beneficial effects:

[0027] 1) The present invention effectively offsets the warping deformation under the action of high internal pressure by optimizing the initial tilt structure of the bevel flange, thereby ensuring the sealing performance of the bevel flange contact surface.

[0028] 2) The design is simple, no need to increase thickness or use expensive materials, and it has a very high cost performance.

[0029] 3) It is suitable for a variety of high internal pressure containers and equipment, and can meet the technical requirements of different industries.

[0030] 4) Improve the operational safety and service life of the container under extreme pressure conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure is a schematic diagram of the structure of a high-pressure container of the present invention.

[0032] Figure 2 This is an enlarged view of point A of a high-pressure container of the present invention.

[0033] Figure 3 This is an enlarged view of point A of a high-pressure container of the present invention when in use.

[0034] Among them, 1-high-pressure cylinder; 2-wing plate; 3-upper end cover; 4-bevel flange; 5-lower end cover. DETAILED DESCRIPTION

[0035] In order to achieve the above-mentioned purpose and effect, the technical means and structures adopted by the present invention are described in detail with reference to the accompanying drawings for the features and functions of the preferred embodiments of the present invention.

[0036] like Figure 1-Figure 3 As shown, the present invention provides a high-pressure container, comprising:

[0037] The high-pressure cylinder 1 is cylindrical and hollow, and the top of the high-pressure cylinder 1 is open;

[0038] The wing plate 2 is arranged on the outer edge of the opening of the high-pressure cylinder 1, and the wing plate 2 is integrally formed with the high-pressure cylinder 1;

[0039] An upper end cover 3, the size of which is adapted to the high-pressure cylinder 1, and the upper end cover 3 is arranged on the top of the high-pressure cylinder 1 to seal the high-pressure cylinder 1;

[0040] The bevel flange 4 is arranged at the outer edge of the upper end cover 3. The bevel flange 4 is integrally formed with the upper end cover 3. The size of the bevel flange 4 is adapted to the wing plate 2. The end of the bevel flange 4 close to the wing plate 2 is inclined so that the end of the bevel flange 4 away from the high-pressure cylinder 1 does not contact the wing plate 2.

[0041] A plurality of corresponding bolt holes are evenly distributed on the bevel flange 4 and the wing plate 2 , and the bevel flange 4 and the wing plate 2 are connected by bolts.

[0042] In actual use, when there is no pressure in the high-pressure cylinder 1, the inner opening of the bevel flange 4 close to the wing plate 2 is small, and the outer opening is large, forming a certain inclination angle; when the pressure in the high-pressure cylinder 1 is relatively large, under the action of the high internal pressure, the bevel flange 4 warps and deforms, and the inner and outer openings of the bevel flange 4 tend to be consistent. At this time, the bevel flange 4 fits with the wing plate 2, ensuring the sealing of the device after the bevel flange 4 is deformed.

[0043] In this embodiment, the bottom of the high-pressure cylinder 1 is open, and the structure of the bottom of the high-pressure cylinder 1 is the same as that of the top. A lower end cover 5 is provided at the bottom of the high-pressure cylinder 1, and the structure of the lower end cover 5 is the same as that of the upper end cover 3.

[0044] In this embodiment, the method for calculating the inclination angle of the bevel flange includes the following steps:

[0045] S1: Determine the working pressure of the high-pressure cylinder during actual use and the mechanical properties of the bevel flange.

[0046] Specifically, the mechanical properties of the bevel flange are elastic modulus and Poisson's ratio.

[0047] S2: The maximum displacement difference of the warping deformation of the bevel flange is obtained by finite element analysis or theoretical calculation of the working pressure and mechanical properties.

[0048] S3: Measure or design the contact surface width of the bevel flange.

[0049] S4: Calculate the initial inclination angle of the bevel flange based on the above data.

[0050] Specifically, the calculation formula for the inclination angle of the bevel flange is:

[0051] θ=arctan(△ / L),

[0052] Where:

[0053] θ: initial inclination angle of the bevel flange;

[0054] Δ: Maximum displacement difference of warping deformation of bevel flange;

[0055] L: Width of the contact surface of the bevel flange.

[0056] In this embodiment, the finite element analysis includes the following steps:

[0057] A1. Use software to design the geometric model of the device, especially the thickness, shape, outer edge size, contact surface width and other parameters of the bevel flange.

[0058] A2. Divide the flange into meshes to form a finite element model.

[0059] Preferably, the mesh size needs to be balanced between accuracy and computational efficiency. Usually, a finer mesh is used for local complex areas.

[0060] A3. Define the mechanical properties of each material (such as elastic modulus, Poisson's ratio, yield strength, etc.).

[0061] Preferably, the bevel flange is usually made of metal material (such as steel or alloy) and is assumed to be an isotropic material.

[0062] A4. Set the working pressure in the high-pressure cylinder and the boundary conditions for simulating the connection between the bevel flange and the wing plate.

[0063] A5. Select the appropriate analysis type, such as static analysis, linear static analysis, nonlinear analysis, etc.

[0064] Preferably, since the bevel flange may experience large deformation, nonlinear analysis can be selected to more accurately simulate

[0065] A6. Use finite element analysis software to solve and obtain the deformation results of the bevel flange under working pressure.

[0066] In another embodiment, if the bevel flange is a thin shell flange subjected to uniform internal pressure, it is assumed that the bevel flange bends when subjected to uniform internal pressure. At this time, the deformation of the center of the bevel flange is mainly considered, and the maximum deformation of the flange can be estimated using the following formula:

[0067]

[0068] Where:

[0069] Δ: Maximum displacement difference of warping deformation of bevel flange;

[0070] P: internal pressure;

[0071] r: radius of the bevel flange;

[0072] E: elastic modulus of the material;

[0073] t: thickness of the bevel flange.

[0074] In another embodiment, the working pressure of the high-pressure cylinder 1 is 50MPa, the inclination angle of the bevel flange 4 is 5°, and the bevel flange 4 and the upper end cover 3 are made of high-strength stainless steel. When there is no pressure in the device, the inner opening of the contact surface between the bevel flange 4 and the wing plate 2 is 0mm, and the outer opening is 0.5mm. When the pressure in the device rises to 50MPa, the bevel flange 4 is warped and deformed, and the bevel flange 4 is completely fitted with the wing plate 2, ensuring the sealing of the device and the firmness of the device under pressure, and realizing reliable sealing of the device under a high working pressure of 50MPa.

[0075] The above descriptions are only preferred embodiments of the present invention, not all embodiments. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, belong to the protection scope of the present invention.

Claims

1. A high pressure container, characterized in that: include: A high-pressure cylinder (1), wherein the high-pressure cylinder (1) is cylindrical and hollow, and the top of the high-pressure cylinder (1) is open; A wing plate (2), the wing plate (2) being arranged on the outer edge of the opening of the high-pressure cylinder (1), the wing plate (2) being integrally formed with the high-pressure cylinder (1); An upper end cover (3), the size of the upper end cover (3) being adapted to the high-pressure cylinder (1), and the upper end cover (3) being arranged on the top of the high-pressure cylinder (1); A bevel flange (4), the bevel flange (4) being arranged on the outer edge of the upper end cover (3), the bevel flange (4) being integrally formed with the upper end cover (3), the size of the bevel flange (4) being adapted to the wing plate (2), the end of the bevel flange (4) close to the wing plate (2) being inclined so that the end of the bevel flange (4) away from the high-pressure cylinder (1) does not contact the wing plate (2); A plurality of corresponding bolt holes are evenly distributed on the bevel flange (4) and the wing plate (2), and the bevel flange (4) and the wing plate (2) are connected by bolts.

2. A high pressure container according to claim 1, characterized in that: The bottom of the high-pressure cylinder (1) is open, and the structure of the bottom of the high-pressure cylinder (1) is the same as the structure of the top. The bottom of the high-pressure cylinder (1) is provided with a lower end cover (5), and the structure of the lower end cover (5) is the same as that of the upper end cover (3).

3. A high pressure container according to claim 1, characterized in that: The method for calculating the inclination angle of the bevel flange (4) comprises the following steps: S1: Determine the working pressure of the high-pressure cylinder during actual use and the mechanical properties of the bevel flange; S2: The maximum displacement difference of the warping deformation of the bevel flange is obtained by finite element analysis or theoretical calculation of the working pressure and mechanical properties; S3: Measure or design the contact surface width of the bevel flange; S4: Calculate the initial inclination angle of the bevel flange according to the data obtained from steps S1 to S3.

4. A high pressure container according to claim 3, characterized in that: The calculation formula for the inclination angle of the bevel flange (4) is: θ=arctan(△ / L), Where: θ: initial inclination angle of the bevel flange; Δ: Maximum displacement difference of warping deformation of bevel flange; L: Width of the contact surface of the bevel flange.

5. A high pressure container according to claim 3, characterized in that: It is characterized in that The mechanical properties of the bevel flange (4) are elastic modulus and Poisson's ratio.

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