A new type of heat-resistant and high-pressure quick-opening container with a thin metal liner and an internal insulation layer

Abstract

The present invention belongs to the technical field of special equipment for pressure vessels, and particularly relates to a new type of heat-resistant and high-pressure quick-opening container with a thin metal liner and an inner insulation layer, the new type of heat-resistant and high-pressure quick-opening container with a thin metal liner and an inner insulation layer comprises an inner liner, an insulation layer and a flange cylinder arranged in sequence from the inside to the outside; the opening end of the inner liner is provided with a flange structure; the inner wall of the insulation layer is tightly fitted with the outer wall of the inner liner, the opening end of the insulation layer is provided with a step structure, the flange structure is overlapped on the step structure, and the insulation layer is provided with a pressure cover; the inner wall of the flange cylinder is tightly fitted with the outer wall of the insulation layer, and a flat cover is provided on the flange cylinder; the flat cover and the flange cylinder are connected by a quick-opening structure; the inner liner is sealed by a sealing assembly. The pressure vessel provided by the present invention is resistant to high temperature and high pressure, has a simple overall structure, reliable sealing, is easy to disassemble and assemble, and has a low manufacturing cost, is conducive to promotion, and has high practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of special equipment for pressure vessels, and in particular relates to a novel temperature-resistant and high-pressure quick-opening container with a thin metal liner and an internal heat-insulating layer. Background Art

[0002] Pressure vessels are general special equipment involved in all industrial sectors. They generally work under pressure and are mostly used to contain high-temperature, high-pressure or flammable and explosive media. Once an accident occurs, it will seriously threaten people’s lives and property safety.

[0003] The operating environment of pressure vessels used in various industrial fields such as chemical, coal, and machinery varies with the process. The more complex the process, the more stringent the operating conditions. In some special processes, such as hydrogenation reactions, nuclear reactors, and supercritical extraction, pressure vessels not only need to withstand high pressures, but also high temperatures and resist the corrosive effects of the medium. With the rapid development of modern nuclear power, petrochemical and other industrial production and the improvement of advanced technologies in the biological, pharmaceutical, and food industries, higher requirements have been put forward for the structure, material selection, manufacturing, and cost of high-temperature and high-pressure corrosion-resistant vessels.

[0004] Aiming at the problems of complicated structure, difficult disassembly and assembly, and high price of the existing high-temperature and high-pressure containers, a new type of temperature-resistant and high-pressure quick-opening container with a thin metal liner and an internal insulation layer is proposed to solve the shortcomings of the existing pressure vessels. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a new type of metal thin inner liner with an internal insulation layer, which is temperature-resistant and high-pressure quick-opening container, aiming to solve the problems of complex structure, difficult disassembly and assembly, and high price of high-temperature and high-pressure containers in the prior art.

[0006] The embodiment of the present invention is implemented as follows: a novel metal thin liner inner insulation layer type heat-resistant high-pressure quick-opening container, the novel metal thin liner inner insulation layer type heat-resistant high-pressure quick-opening container comprises an inner liner, an insulation layer and a flange cylinder arranged in sequence from the inside to the outside;

[0007] The opening end of the inner container is provided with a flange structure;

[0008] The inner wall of the heat insulation layer is closely fitted with the outer wall of the inner liner, the open end of the heat insulation layer is provided with a step structure, the flange structure is overlapped on the step structure, and the heat insulation layer is provided with a gland;

[0009] The inner wall of the flange cylinder is tightly fitted with the outer wall of the heat insulation layer, and a flat cover is provided on the flange cylinder;

[0010] The flat cover and the flange cylinder are connected via a quick-opening structure;

[0011] The inner container is sealed by a sealing assembly.

[0012] The new type of heat-resistant and high-pressure quick-opening container with a thin metal liner and an internal insulation layer provided in the embodiment of the present invention comprises a three-layer structure of an liner, an insulation layer, and a flange cylinder. The liner is mainly used to withstand high temperature, corrosion and other adverse conditions; the insulation layer has a low thermal conductivity, which can effectively prevent heat loss and heat radiation; the flange cylinder withstands pressure, and the material selection does not need to consider the corrosion of the medium and the strength weakening effect of high temperature. The flat cover and the flange cylinder are connected by a quick-opening structure, so that the flat cover can be easily opened, and the operation is quick. The pressure vessel provided by the present invention is resistant to high temperature and high pressure, has a simple overall structure, reliable sealing, easy disassembly and assembly, and low manufacturing cost, which is conducive to promotion and has high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A half-section structural diagram of a novel heat-resistant and high-pressure quick-opening container with a thin metal liner and an internal heat-insulating layer provided in an embodiment of the present invention;

[0014] Figure 2 It is the structural view of the quick-open structure;

[0015] Figure 3 A top view of a novel heat-resistant and high-pressure quick-opening container with a thin metal liner and an internal heat-insulating layer provided in an embodiment of the present invention;

[0016] Figure 4 It is a top view of the quick-opening structure;

[0017] Figure 5 is a structural view of the sealing component;

[0018] Figure 6 A cloud diagram showing the steady-state temperature field distribution of the heat insulation layer in one embodiment;

[0019] Figure 7 A cloud diagram showing the steady-state temperature field distribution of the heat insulation layer in one embodiment;

[0020] Figure 8 A cloud diagram of the steady-state temperature field distribution of a flat cover in an embodiment;

[0021] Fig. 9 This is a cloud diagram of the steady-state temperature field distribution of the flange cylinder in one embodiment;

[0022] Fig.10 This is a cloud diagram of the steady-state temperature field distribution of each layer when no thermal insulation layer is provided in an embodiment.

[0023] In the attached figure: 1. Inner liner; 2. Insulation layer; 3. Flange cylinder; 4. Split ring; 5. Guide rod; 6. Roller; 7. Rotating arm; 8. Rotating block; 9. Stop ring; 10. Fixing pin; 11. Connecting pipe; 12. Flat cover; 13. Bolt; 14. Pressure rod; 15. First pressure pad; 16. Second pressure pad; 17. Sealing disk; 18. Sealing ring. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0026] like Figure 1 As shown, it is a structural diagram of a novel metal thin liner 1 inner insulation layer 2 type heat-resistant high-pressure quick-opening container provided by an embodiment of the present invention, wherein the novel metal thin liner 1 inner insulation layer 2 type heat-resistant high-pressure quick-opening container comprises an inner liner 1, an insulation layer 2 and a flange cylinder 3 arranged in sequence from the inside to the outside;

[0027] The opening end of the inner container 1 is provided with a flange structure;

[0028] The inner wall of the heat insulation layer 2 is tightly fitted with the outer wall of the inner liner 1, the open end of the heat insulation layer 2 is provided with a step structure, the flange structure is overlapped on the step structure, and the heat insulation layer 2 is provided with a gland;

[0029] The inner wall of the flange cylinder 3 is tightly fitted with the outer wall of the thermal insulation layer 2, and a flat cover 12 is provided on the flange cylinder 3;

[0030] The flat cover 12 is connected to the flange cylinder 3 via a quick-open structure;

[0031] The inner container 1 is sealed by a sealing assembly.

[0032] In the embodiment of the present invention, the inner tank 1 is in direct contact with the medium and can withstand harsh conditions such as high temperature and corrosion. The material selection needs to be resistant to high temperature and corrosion and have a certain plasticity. The thermal insulation layer 2 is mainly used to prevent heat loss. The flange cylinder 3 is under pressure, and the material selection does not need to consider the corrosiveness of the internal medium and the strength weakening effect of high temperature, which can greatly save costs.

[0033] In the embodiment of the present invention, the flat cover 12 is connected to the flange cylinder 3 via a quick opening structure, so that the flat cover 12 can be quickly opened. The inner liner 1 is sealed by a sealing assembly, so that a high temperature and high pressure environment inside the inner liner 1 can be maintained.

[0034] The new type of heat-resistant and high-pressure quick-opening container with a thin metal liner 1 and an inner insulation layer 2 provided in an embodiment of the present invention comprises a three-layer structure of an liner 1, an insulation layer 2, and a flange cylinder 3. The liner 1 is mainly used to withstand harsh conditions such as high temperature and corrosion; the insulation layer 2 has a low thermal conductivity and can effectively prevent heat loss and heat radiation; the flange cylinder 3 withstands pressure, and the material selection does not need to consider medium corrosion and the weakening effect of temperature. By connecting the flat cover 12 and the flange cylinder 3 through a quick-opening structure, the flat cover 12 can be easily opened, and the operation is quick. The pressure vessel provided by the present invention is resistant to high temperature and high pressure, has a simple overall structure, reliable sealing, is easy to disassemble and assemble, and has a low manufacturing cost, which is conducive to promotion and has high practicality.

[0035] like Figure 1-4 As shown, in one embodiment of the present invention, the quick-opening structure includes a split ring 4 and a driving mechanism;

[0036] An annular sealing groove is provided on the mating surface of the flange cylinder 3 and the flat cover 12, and the annular sealing groove is composed of a first half groove located on the inner wall surface of the flange cylinder 3 and a second half groove located on the outer wall surface of the flat cover 12. The split ring 4 is arranged in the annular sealing groove, and the split ring 4 includes a plurality of sections, and each section can move radially between the first half groove and the second half groove under the drive of the driving mechanism.

[0037] In the embodiment of the present invention, preferably, the width of the first half groove is smaller than the width of the split ring 4, so that after the split ring 4 is embedded in the first half groove, at least part of it is still in the second half groove, so as to provide pressure for the sealing assembly by utilizing the shear force exerted on the split ring 4. Accordingly, the width of the second half groove should be greater than or equal to the width of the split ring 4, so that the split ring 4 can be completely separated from the first half groove, thereby facilitating the opening of the flat cover 12.

[0038] like Figure 1-4 As shown, in one embodiment of the present invention, the number of the driving mechanisms corresponds to the number of the split rings 4, and the driving mechanism includes a guide rod 5, a roller 6, a rotating block 8 and a fixing pin 10;

[0039] One end of the guide rod 5 is connected to the split ring 4, and the other end is rotatably connected to the arc groove provided on the rotating block 8. A roller 6 is also provided on the guide rod 5.

[0040] The rotating block 8 is rotatably connected to the top surface of the flat cover 12 through the fixing pin 10. A rotating arm 7 is connected to the rotating block 8. The rotating arm 7 is rotated to drive the guide rod 5 to move relative to the arc groove so that the split ring 4 moves radially between the first half groove and the second half groove.

[0041] In the embodiment of the present invention, preferably, each driving mechanism corresponds to a split ring 4, and the driving mechanism is arranged in the middle of the split ring 4, so as to drive the entire split ring 4 to move. Optionally, each split ring 4 can also be provided with multiple driving mechanisms, which depends on the length of the split ring 4. In the embodiment of the present invention, as a specific implementation method, the split ring 4 is provided with 4. A stop ring 9 is arranged on the top of the fixing pin 10.

[0042] In the embodiment of the present invention, by operating the rotating arm 7, the rotating block 8 rotates around the fixed pin 10, thereby driving the guide rod 5 to move along the radial direction of the flat cover 12, so that the split ring 4 is partially pushed into or completely pulled out of the first half groove. A roller 6 is also provided on the guide rod 5 to facilitate the movement of the guide rod.

[0043] like Figure 1 , 5 As shown, in one embodiment of the present invention, the sealing assembly includes a pressure rod 14, a first pressure pad 15, a second pressure pad 16, a sealing disc 17 and a sealing ring 18;

[0044] The top surface of the flat cover 12 is provided with a plurality of mounting holes arranged in an annular manner, a pressure rod 14 is provided in the mounting hole, the top end of the pressure rod 14 is pressed down and fixed by a bolt 13, and the bottom end of the pressure rod 14 is provided with the first pressure pad 15, which is annular in structure and is arranged in an annular groove provided in the bottom surface of the flat cover 12;

[0045] The gland is provided with an annular groove directly facing the first pressure pad 15, and the second pressure pad 16 of an annular structure is provided in the annular groove;

[0046] The sealing disc 17 with thick edges and thin middle is arranged below the second pressure pad 16;

[0047] The sealing ring 18 is disposed below the sealing disk 17 , and the sealing ring 18 is embedded in the annular groove provided on the flange structure.

[0048] In an embodiment of the present invention, the first pressure pad 15 can be a metal pressure pad, and the second pressure pad 16 can be a heat-insulating pressure pad made of fiberglass or ceramic material. The first pressure pad 15 and the second pressure pad 16 are both configured as an annular structure, wherein the first pressure pad 15 is disposed in an annular groove on the bottom surface of the flat cover 12, and the second pressure pad 16 is located in an annular through groove of the pressure cover. The annular through groove on the pressure cover divides the pressure cover into an annular ring plate and a circular cover plate, which are installed separately during installation. A sealing disk 17 is disposed at the bottom of the pressure cover. The sealing disk 17 is a disc-shaped structure, and is thin in the middle and thick at the edge. The thicker edge portion forms an annular ring plate. The thinness in the middle is to allow the sealing disk to have a certain flexibility, so as to facilitate sealing pre-tightening and achieve reliable sealing under the working state of the medium. The material selection of the sealing disk 17 needs to be resistant to medium corrosion and temperature effects.

[0049] In the embodiment of the present invention, the sealing ring 18 can be a metal "O" ring or "C" ring, graphite winding, etc. When the bolt 13 is tightened for pre-tightening, the outer ring of the sealing disk 17 will move downward significantly, and the downward movement is determined by the sealing ring 18.

[0050] like Figure 1 As shown, in one embodiment of the present invention, a connecting pipe 11 is provided in the middle of the flat cover 12 , and the connecting pipe 11 passes through the flat cover 12 and is fixed to the sealing disk 17 by welding.

[0051] In the embodiment of the present invention, the pipe 11 can be used to introduce or export the medium into the inner container 1. The pipe 11 is fixed to the sealing disk 17 by welding, which is reliable and has high sealing performance. One or more pipes 11 can be provided as needed.

[0052] In one embodiment of the present invention, a heat insulating material is disposed between the connecting pipe 11 and the flat cover 12 .

[0053] In the embodiment of the present invention, the thermal insulation material may be the same as the material used for the thermal insulation layer 2 .

[0054] In one embodiment of the present invention, the heat insulation layer 2 is made of inorganic silicate, aluminum silicate fiber, heat reflective material and hollow ceramic microspheres.

[0055] In the embodiment of the present invention, the heat insulation layer 2 is made of inorganic silicate, aluminum silicate fiber, heat reflective material and hollow ceramic microspheres, and has an extremely small thermal conductivity of 0.03W / (m·K), which can effectively suppress heat loss and heat radiation, and the compressive strength can reach 80Mpa.

[0056] Figure 6 This is the steady-state temperature field distribution cloud diagram of a 1L container when the internal medium is 550°C, the thickness of the insulation layer 2 is 10mm, the ambient temperature is 25°C, and the surface convection heat transfer coefficient of the flat cover, flange cylinder and air is 10W / (m2*K). Figure 7 The steady-state temperature distribution cloud diagram of the insulation layer 2 shows that the lowest temperature of the outer surface of the insulation layer reaches 35.5°C, the highest temperature of the flange cylinder 3 is 39.2°C, and the highest temperature of the flat cover 12 is 41.4°C; Figure 8 , 9 These are the temperature distribution cloud diagrams of the flat cover and flange cylinder. Fig.10 This is the temperature distribution cloud diagram of each layer when no insulation layer is set under the same conditions. Figure 6-10 It can be seen that the pressure vessel has good thermal insulation effect.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of heat-resistant and high-pressure quick-opening container with a thin metal liner and an internal insulation layer, characterized in that: The novel metal thin liner inner insulation layer type temperature-resistant high-pressure quick-opening container comprises an inner liner, an insulation layer and a flange cylinder which are arranged in sequence from the inside to the outside; The opening end of the inner container is provided with a flange structure; The inner wall of the heat insulation layer is closely fitted with the outer wall of the inner liner, the open end of the heat insulation layer is provided with a step structure, the flange structure is overlapped on the step structure, and the heat insulation layer is provided with a gland; The inner wall of the flange cylinder is tightly fitted with the outer wall of the heat insulation layer, and a flat cover is provided on the flange cylinder; The flat cover and the flange cylinder are connected via a quick-opening structure; The inner container is sealed by a sealing assembly; The quick-opening structure includes a split ring and a driving mechanism; An annular sealing groove is provided on the mating surface of the flange cylinder and the flat cover, the annular sealing groove is composed of a first half groove located on the inner wall surface of the flange cylinder and a second half groove located on the outer wall surface of the flat cover, the split ring is arranged in the annular sealing groove, the split ring includes a plurality of sections, and each section can move radially between the first half groove and the second half groove under the drive of the driving mechanism; The sealing assembly comprises a pressure rod, a first pressure pad, a second pressure pad, a sealing disc and a sealing ring; A plurality of mounting holes arranged in an annular manner are provided on the top surface of the flat cover, a pressure rod is provided in the mounting hole, the top end of the pressure rod is pressed down and fixed by bolts, and the bottom end of the pressure rod is provided with the first pressure pad, which is annular in structure and is provided in an annular groove provided on the bottom surface of the flat cover; The gland is provided with an annular groove directly opposite to the first pressure pad, the annular groove is provided with the second pressure pad of an annular structure, and the second pressure pad is made of thermal insulation ceramic material or glass fiber reinforced plastic thermal insulation material; The sealing disc with thick edges and thin middle is arranged below the second pressure pad; The sealing ring is arranged below the sealing disk and is embedded in the annular groove provided on the flange structure.

2. The novel metal thin liner inner insulation layer type temperature-resistant high-pressure quick-opening container according to claim 1 is characterized in that: The number of the driving mechanisms corresponds to the number of the split rings, and the driving mechanisms include guide rods, rollers, rotating blocks and fixing pins; One end of the guide rod is connected to the split ring, and the other end is rotatably connected to the arc groove provided on the rotating block, and a roller is also provided on the guide rod; The rotating block is rotatably connected to the top surface of the flat cover via the fixing pin, and a rotating arm is connected to the rotating block. The rotating arm is rotated to drive the guide rod to move relative to the arc groove so that the split ring moves radially between the first half groove and the second half groove.

3. The novel metal thin liner inner insulation layer type temperature-resistant high-pressure quick-opening container according to claim 1 is characterized in that: A connecting pipe is arranged in the middle of the flat cover, the connecting pipe passes through the flat cover and is welded and fixed to the sealing disk.

4. The novel metal thin liner inner insulation layer type temperature-resistant high-pressure quick-opening container according to claim 3 is characterized in that: A heat insulating material is arranged between the connecting pipe and the flat cover.

5. The novel metal thin liner inner insulation layer type temperature-resistant and high-pressure quick-opening container according to claim 1 is characterized in that: The heat insulation layer is made of inorganic silicate, aluminum silicate fiber, heat reflective material and hollow ceramic microbeads.

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