Ultrahigh pressure kettle container

Abstract

The invention belongs to the technical field of crystal growth, and particularly relates to an ultrahigh pressure kettle container which comprises a segmented heater and a kettle body installed in the segmented heater, a bottom sealing plug piece and a top sealing plug piece are installed at the top and the bottom of the kettle body respectively, and a pressure relief heat dissipation assembly is installed on the top sealing plug piece; a baffle is installed in the kettle body and divides the inner space of the kettle body into a crystallization area and a dissolution area, the outer wall of the crystallization area is attached to an upper heat conduction cylinder, the outer wall of the dissolution area is attached to a lower heat conduction cylinder, and the segmented heater conducts heat to the crystallization area and the dissolution area through the upper heat conduction cylinder and the lower heat conduction cylinder. The length of the dissolving area is adjusted through the heat insulation assembly, the solution dissolving efficiency is improved, and meanwhile the solution flow speed is increased; the thermal insulation assembly reduces the length of the temperature difference section, inhibits solution convection, slows down the speed of solution entering and exiting a crystalline region, prevents impurities from being wrapped in crystals, and improves the purity of the crystals. Under the complementary action of the two, the solution convection in the earlier stage forms balance.

Description

Technical Field

[0001] The invention belongs to the technical field of crystal growth, and in particular relates to an ultra-high pressure autoclave container. Background Art

[0002] The hydrothermal method is a low-confinement system crystal growth method that can often grow crystals with higher crystal quality than other methods, and the hydrothermal method has demonstrated its advantages in the industrialization of artificial crystals. The main methods of hydrothermal crystal growth are temperature difference method, cooling method and isothermal method. The temperature difference method is currently widely used, which relies on the solution in the container to maintain temperature difference convection to form a supersaturated state. The growth time can be set as needed for continuous growth, and the temperature difference can be adjusted according to the ratio of raw materials to seed crystals through buffers (such as baffles, etc.) and multi-temperature zone heating power distribution to achieve the purpose of growing large-sized crystals.

[0003] In order to improve the thermal conductivity of the solution, the prior art solves the problem by arranging a heat-conducting cylinder on the outer wall of the kettle. For example, the patent with publication number CN210314557U mainly conducts the heat of the segmented heating furnace to the dissolution zone and the crystallization zone through the upper and lower heat-conducting cylinders and the heat-insulating barrier layer arranged therebetween. However, due to the arrangement of the heat-insulating barrier layer between the upper and lower heat-conducting cylinders, the temperature difference between the dissolution zone and the crystallization zone increases under the action of the heat-insulating barrier layer. The longer temperature difference will intensify the convection of the solution, increase the solution flow rate during the entire crystallization process, and easily cause crystal defects. Summary of the invention

[0004] The purpose of the present invention is to provide an ultra-high pressure autoclave container to solve the technical problems in the prior art in view of the shortcomings of the prior art.

[0005] The object of the present invention can be achieved by the following technical scheme: an ultra-high pressure autoclave container, comprising a segmented heater and an autoclave body installed inside the segmented heater, a bottom sealing member and a top sealing member are installed on the top and bottom of the autoclave body respectively, and a pressure relief and heat dissipation component is installed on the top sealing member; a baffle is installed in the autoclave body, and the baffle separates the internal space of the autoclave body into a crystallization zone and a dissolution zone, the outer wall of the crystallization zone is attached to an upper heat-conducting cylinder, and the outer wall of the dissolution zone is attached to a lower heat-conducting cylinder, and the segmented heater conducts heat to the crystallization zone through the upper heat-conducting cylinder and the lower heat-conducting cylinder. and dissolution zone; a heat insulation component is installed between the upper heat-conducting tube and the lower heat-conducting tube, the heat insulation component is driven by a transmission component, the heat insulation component includes a heat insulation folding plate, a heat insulation ring is installed on the heat insulation folding plate, the heat insulation ring is respectively slidably matched with the upper heat-conducting tube and the lower heat-conducting tube, and a screw sleeve rod is installed on the heat insulation ring; the transmission component includes a stepper motor and a transmission box, the transmission box is fixedly installed on the segmented heater, and screw rod 2 and screw rod 1 are respectively installed at both ends of the transmission box, screw rod 2 and screw rod 1 are respectively connected to the screw sleeve rod for transmission, and the stepper motor drives screw rod 1 through the transmission rod.

[0006] As a further optimization or improvement of this solution, a top groove is formed on the upper heat conduction cylinder, and a bottom groove is formed on the lower heat conduction cylinder. The screw sleeve rod slides in the top groove and the bottom groove respectively.

[0007] As a further optimization or improvement of this solution, the heat insulation folding plates are connected by a rotating shaft. When the transmission assembly drives the heat insulation folding plates to fold, the heat insulation folding plates are compressed, the temperature difference section between the dissolution area and the crystallization area is reduced, and at the same time, the heat insulation strength of the heat insulation folding plates is increased.

[0008] As a further optimization or improvement of this solution, a top shaft and a bottom shaft are respectively rotatably installed in the transmission box. The top shaft is coaxially connected with the second lead screw, the bottom shaft is coaxially connected with the first lead screw, an electromagnetic chuck is installed on the bottom shaft, a transmission boss is fixedly installed on the top shaft, a transmission sliding rod is slidably installed in the transmission boss, suction rings and collar rings are respectively installed at both ends of the transmission sliding rod, the collar ring is connected with the transmission boss through a spring, and the electromagnetic chuck adsorbs the suction ring.

[0009] As a further optimization or improvement of this solution, the bottom plugging member includes a bottom plug, a bottom plug nut and a bottom plug pulling cap. The bottom plug is installed at the bottom of the kettle body, and the bottom plug nut and the bottom plug pulling cap block the bottom plug at the bottom of the kettle body through a bottom plug sealing ring.

[0010] As a further optimization or improvement of this solution, the top plugging member includes an upper sealing plug, a clamp and an upper flange. The upper sealing plug is installed at the top of the kettle body, the upper flange blocks the upper sealing plug at the top of the kettle body through an upper sealing ring, the clamp connects the upper flange and the kettle body, a lifting ring screw is installed at the top of the clamp, a plug lifting flange is installed at the top of the upper flange, and a plug lifting bolt is installed on the plug lifting flange.

[0011] As a further optimization or improvement of this solution, the pressure relief and heat dissipation assembly includes a compression nut and a heat dissipation pipe. The compression nut fixes the heat dissipation pipe on the top of the upper sealing plug. A three-way connecting pipe is installed on the heat dissipation pipe, a pressure relief pipe is installed on the three-way connecting pipe, and the three-way connecting pipe is connected to a pressure gauge through a meter rod.

[0012] Advantages of the present invention:

[0013] (1) By adjusting the length of the dissolution area through the heat insulation assembly, the present invention improves the dissolution efficiency of the solution and at the same time increases the flow rate of the solution; by reducing the length of the temperature difference section through the heat insulation assembly, the solution convection is inhibited, the speed of the solution entering and leaving the crystallization area is slowed down, the inclusion of impurities in the crystal is avoided, and the crystal purity is improved. Under the complementary action of the two, the solution convection in the early stage is balanced.

[0014] (2) In the present invention, a stepping motor drives the rotation of the first lead screw. At the same time, the electromagnetic chuck is energized, and the electromagnetic chuck attracts the suction ring, causing the suction ring to move downward and connect with the suction ring. The spring is compressed. When the first lead screw rotates, the first lead screw drives the bottom shaft to rotate synchronously. The bottom shaft is connected to the suction ring through the electromagnetic chuck to drive the top shaft and the second lead screw to rotate. The relative movement of the nut rod is driven by the rotation of the first lead screw and the second lead screw, so that the nut rod compresses the heat insulation folding plate through the heat insulation ring, causing the heat insulation folding plate to fold, thereby realizing the temperature difference section adjustment before the crystallization operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is Figure 1 a schematic diagram of the structure of part A of

[0018] Figure 3 It is a matching diagram of the heat insulation component and the transmission component.

[0019] Figure 4 It is a sectional view of the overall structure of the heat insulation component.

[0020] Figure 5 It is a schematic diagram of the internal structure of the transmission box.

[0021] Figure 6 It is a connection diagram of the bottom shaft and the top shaft.

[0022] Figure 7 It is a schematic diagram of the overall structure of the bottom plug.

[0023] Figure 8 It is a schematic diagram of the overall structure of the top plug.

[0024] Figure 9 It is a schematic diagram of the overall structure of the pressure relief and heat dissipation component.

[0025] The labels in the figure are:

[0026] 1. Sectional heater;

[0027] 2. Kettle body; 201. Dissolution area; 202. Crystallization area; 203. Baffle;

[0028] 3. Upper heat conduction cylinder; 4. Lower heat conduction cylinder;

[0029] 5. Heat insulation component; 501. Heat insulation folding plate; 502. Rotating shaft; 503. Heat insulation ring; 504. Nut rod;

[0030] 6. Transmission assembly; 601. Stepper motor; 602. Transmission rod; 603. First lead screw; 604. Second lead screw; 605. Transmission box; 606. Bottom shaft; 607. Electromagnetic chuck; 608. Top shaft; 609. Transmission boss; 610. Suction ring; 611. Transmission slide bar; 612. Collar; 613. Spring;

[0031] 7. Top groove; 8. Bottom groove;

[0032] 9. Bottom plugging member; 901. Bottom plug; 902. Bottom plug nut; 903. Bottom plug sealing ring; 904. Bottom plug pull cap;

[0033] 10. Top plugging member; 101. Upper sealing plug; 102. Clamp; 103. Upper flange; 104. Upper sealing ring; 105. Plug lifting flange; 106. Plug lifting bolt; 107. Lifting ring screw;

[0034] 11. Pressure relief and heat dissipation assembly; 1101. Compression nut; 1102. Heat dissipation pipe; 1103. Three-way connecting pipe; 1104. Pressure relief pipe; 1105. Gauge rod; 1106. Pressure gauge. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] See Figures 1-6A super-high pressure autoclave container, comprising a segmented heater 1 and an autoclave body 2 installed inside the segmented heater 1, wherein a bottom sealing member 9 and a top sealing member 10 are installed on the top and bottom of the autoclave body 2, respectively, and a pressure relief and heat dissipation component 11 is installed on the top sealing member 10; a baffle 203 is installed inside the autoclave body 2, and the baffle 203 divides the internal space of the autoclave body 2 into a crystallization zone 202 and a dissolution zone 201, the outer wall of the crystallization zone 202 is attached to an upper heat-conducting tube 3, and the outer wall of the dissolution zone 201 is attached to a lower heat-conducting tube 4, and the segmented heater 1 conducts heat to the crystallization zone 202 and the dissolution zone 201 through the upper heat-conducting tube 3 and the lower heat-conducting tube 4; between the upper heat-conducting tube 3 and the lower heat-conducting tube 4 Install the heat insulation component 5, which is driven by the transmission component 6. The heat insulation component 5 includes a heat insulation folding plate 501, on which a heat insulation ring 503 is installed. The heat insulation ring 503 is slidably matched with the upper heat conductive tube 3 and the lower heat conductive tube 4 respectively, and a screw sleeve rod 504 is installed on the heat insulation ring 503; the transmission component 6 includes a stepper motor 601 and a transmission box 605, which is fixedly installed on the segmented heater 1, and screw rod 2 604 and screw rod 1 603 are installed at both ends of the transmission box 605 respectively, which are respectively connected to the screw sleeve rod 504, and the stepper motor 601 drives screw rod 1 603 through the transmission rod 602.

[0037] Specifically, a top groove 7 is formed on the upper heat-conducting tube 3 , and a bottom groove 8 is formed on the lower heat-conducting tube 4 . The screw sleeve rod 504 is respectively located in the top groove 7 and the bottom groove 8 to slide.

[0038] Specifically, the thermal insulation folding plates 501 are connected by a rotating shaft 502. When the transmission assembly 6 drives the thermal insulation folding plates 501 to fold, the thermal insulation folding plates 501 are compressed, the temperature difference between the dissolution zone 201 and the crystallization zone 202 is reduced, and the thermal insulation strength of the thermal insulation folding plates 501 is increased.

[0039] It should be noted that, in the present invention, the prepared solution is poured into the dissolution zone 201 and the seed crystal is installed in the crystallization zone 202 .

[0040] The stepper motor 601 is started, and the stepper motor 601 drives the screw rod 1 603 to rotate through the transmission rod 602, and the electromagnetic suction cup 607 is energized at the same time, and the electromagnetic suction cup 607 attracts the suction ring 610, so that the suction ring 610 moves down and is connected with the suction ring 610, and the spring 613 is compressed. When the screw rod 1 603 rotates, the screw rod 1 603 drives the bottom shaft 606 to rotate synchronously, and the bottom shaft 606 is connected with the suction ring 610 through the electromagnetic suction cup 607 to drive the top shaft 608 and the screw rod 2 604 to rotate, and the screw rod 1 603 and the screw rod 2 604 rotate to drive the screw rod 504 to move relatively, so that the screw rod 504 compresses the heat insulation folding plate 501 through the heat insulation ring 503, so that the heat insulation folding plate 501 is folded, and the temperature difference section length is adjusted. Finally, the segmented heater 1 is started, and the segmented heater 1 heats the crystallization zone 202 and the dissolution zone 201 through the upper heat conduction tube 3 and the lower heat conduction tube 4 respectively.

[0041] It should be noted that the temperature difference section adjustment needs to be completed before the crystallization work. Since the adjustment of the temperature difference section will affect the dissolution zone 201 and the crystallization zone 202, resulting in changes in solution convection, causing solution disorder, and then inhibiting crystallization, the temperature difference section cannot be easily adjusted during the crystallization process.

[0042] See also Figures 3-6 The top shaft 608 and the bottom shaft 606 are rotatably installed in the transmission box 605, the top shaft 608 is coaxially connected with the screw rod 604, the bottom shaft 606 is coaxially connected with the screw rod 1 603, the electromagnetic suction cup 607 is installed on the bottom shaft 606, the transmission boss 609 is fixedly installed on the top shaft 608, the transmission slide bar 611 is slidably installed in the transmission boss 609, the suction ring 610 and the sleeve ring 612 are respectively installed at both ends of the transmission slide bar 611, the sleeve ring 612 is connected with the transmission boss 609 through a spring 613, and the electromagnetic suction cup 607 adsorbs the suction ring 610.

[0043] It should be noted that the prior art has certain requirements for the length of the kettle body 2. If the kettle body 2 is too long, the growth rate of the crystal from top to bottom in the same kettle will be uneven, which may easily cause defects in the crystal; if the kettle body 2 is short, large-sized single crystals cannot be grown. Therefore, in a kettle body 2 of fixed specifications, when the segmented heater 1 is constant, the heating efficiency of the segmented heater 1 on the solution in the dissolution zone 201 is basically fixed, and the dissolution efficiency of the solution in the dissolution zone 201 is low.

[0044] Based on this, the present invention disconnects the power supply of the electromagnetic suction cup 607, and then under the action of the spring 613, the collar 612 drives the suction ring 610 to reset through the transmission slide 611, so that the bottom shaft 606 is separated from the top shaft 608. The stepping motor 601 drives the screw rod 603 to rotate, and under the transmission connection between the screw rod 603 and the screw sleeve rod 504, the heat insulation folding plate 501 is folded from the bottom to the top, the length of the dissolution zone 201 increases, the length of the crystallization zone 202 remains unchanged, and the length of the temperature difference section between the dissolution zone 201 and the crystallization zone 202 decreases.

[0045] The increase in the length of the dissolution zone 201 means that the heating volume of the solution in the dissolution zone 201 by the segmented heater 1 increases, and the dissolution efficiency of the solution in the dissolution zone 201 increases. It also means that the flow of the solution is accelerated, and the flow rate of the solution to the crystallization zone 202 increases. In this state, the solution can easily carry impurities with it and diffuse to the crystallization zone 202, causing the impurities to adhere to the seed crystal. When the crystal grows, the impurities are wrapped into the interior of the crystal to form impurity inclusions, which reduce the purity and quality of the crystal.

[0046] To avoid such a situation, when the present invention is in use, the length of the temperature difference section between the dissolution zone 201 and the crystallization zone 202 is reduced. The reduction of the temperature difference section can effectively inhibit the convection of the solution, slow down the speed of the solution entering and leaving the crystallization zone 202, avoid the phenomenon of impurities being wrapped in the crystal mentioned above, and improve the crystal purity.

[0047] Therefore, the present invention adjusts the length of the dissolution zone 201 through the heat insulation component 5 to improve the dissolution efficiency of the solution and at the same time increase the solution flow rate; the present invention reduces the length of the temperature difference section through the heat insulation component 5 to inhibit the convection of the solution, slow down the speed of the solution entering and leaving the crystallization zone 202, avoid impurities being wrapped in the crystal, and improve the crystal purity. Under the complementary action of the two, the convection of the solution in the early stage is balanced.

[0048] It should be noted that on the premise that the length of the crystallization zone 202 remains unchanged, the changes in the dissolution zone 201 and the temperature difference section have little impact on the crystallization zone 202. After the convection of the solution forms a balance, the changes in the dissolution zone 201 and the temperature difference section will not affect the crystallization zone 202.

[0049] See Figures 7-8 , the bottom plugging member 9 includes a bottom plug 901, a bottom plug nut 902 and a bottom plug pull cap 904. The bottom plug 901 is installed at the bottom of the kettle body 2, and the bottom plug nut 902 and the bottom plug pull cap 904 block the bottom plug 901 at the bottom of the kettle body 2 through a bottom plug sealing ring 903.

[0050] Specifically, the top plugging member 10 includes an upper sealing plug 101, a clamp 102 and an upper flange 103. The upper sealing plug 101 is installed at the top of the kettle body 2. The upper flange 103 blocks the upper sealing plug 101 at the top of the kettle body 2 through an upper sealing ring 104. The clamp 102 connects the upper flange 103 and the kettle body 2. A lifting ring screw 107 is installed at the top of the clamp 102, a plug-lifting flange 105 is installed at the top of the upper flange 103, and a plug-lifting bolt 106 is installed on the plug-lifting flange 105.

[0051] It should be noted that this series of components of the bottom plugging member 9 act together on the bottom of the container to achieve the bottom sealing and structural stability. The bottom plug sealing ring 903 provides good sealing performance to prevent material leakage; the bottom plug nut 902 and the bottom plug pull cap 904 cooperate with each other to press the bottom plug 901 tightly to ensure the safety of the bottom under high pressure and guarantee the smooth progress of the reaction process.

[0052] The top plugging member 10 is located at the top of the kettle body 2 and is responsible for the top sealing and connection. The upper sealing ring 104 enhances the sealing effect. The upper flange 103 and the plug-lifting flange 105 tightly fix the upper sealing plug 101 to ensure the sealing and stability of the top under high pressure and high temperature environments. The clamp 102 realizes the tight connection between the upper flange 103 and the kettle body 2. The lifting ring screw 107 and the plug-lifting bolt 106 improve the convenience of equipment maintenance and operation, facilitating handling and lifting.

[0053] See Figure 9 The pressure relief and heat dissipation assembly 11 includes a compression nut 1101 and a heat dissipation pipe 1102. The compression nut 1101 fixes the heat dissipation pipe 1102 on the top of the upper sealing plug 101. A three-way connecting pipe 1103 is installed on the heat dissipation pipe 1102, a pressure relief pipe 1104 is installed on the three-way connecting pipe 1103, and the three-way connecting pipe 1103 is connected to a pressure gauge 1106 through a gauge rod 1105.

[0054] It should be noted that the present invention can be used alone for preparing crystals by the cooling method. The working principle is similar to the temperature difference method. The internal solution of the kettle body 2 is heated by the segmented heater 1, and after heating to the specified temperature, it is kept at a constant temperature and pressure. Then, the heat dissipation pipe 1102 slowly dissipates the internal temperature of the kettle body 2.

[0055] The working principle of the present invention:

[0056] When the present invention is in use, the prepared solution is poured into the dissolution area 201, and seed crystals are installed in the crystallization area 202.

[0057] Start the stepping motor 601. The stepping motor 601 drives the first lead screw 603 to rotate through the transmission rod 602. At the same time, the electromagnetic chuck 607 is energized. The electromagnetic chuck 607 attracts the suction ring 610, causing the suction ring 610 to move downward and connect with the suction ring 610. The spring 613 is compressed. When the first lead screw 603 rotates, the first lead screw 603 drives the bottom shaft 606 to rotate synchronously. The bottom shaft 606 drives the top shaft 608 and the second lead screw 604 to rotate through the electromagnetic chuck 607 and the suction ring 610. The relative movement of the sleeve rod 504 is driven by the rotation of the first lead screw 603 and the second lead screw 604, so that the sleeve rod 504 compresses the heat insulation folding plate 501 through the heat insulation ring 503, causing the heat insulation folding plate 501 to fold and adjusting the length of the temperature difference section. Finally, start the segmented heater 1, and the segmented heater 1 heats the crystallization area 202 and the dissolution area 201 through the upper heat conduction cylinder 3 and the lower heat conduction cylinder 4 respectively.

[0058] It should be noted that the adjustment of the temperature difference section needs to be completed before the crystallization work. Since adjusting the temperature difference section will affect the dissolution area 201 and the crystallization area 202, resulting in changes in the solution convection and inhibiting crystallization, therefore, during the crystallization work, the temperature difference section cannot be easily adjusted.

[0059] Another usage scenario of the present invention is as follows. By disconnecting the power supply of the electromagnetic chuck 607, and then under the action of the spring 613, the collar 612 drives the suction ring 610 to reset through the transmission slide rod 611, separating the bottom shaft 606 from the top shaft 608. By driving the lead screw 603 to rotate with the stepping motor 601, under the transmission connection between the lead screw 603 and the nut rod 504, the heat-insulating folding plate 501 folds from the bottom to the top, the length of the dissolution zone 201 increases, the length of the crystallization zone 202 remains unchanged, and the length of the temperature difference section between the dissolution zone 201 and the crystallization zone 202 decreases.

[0060] The increase in the length of the dissolution zone 201 means that the heating volume of the internal solution of the dissolution zone 201 by the segmented heater 1 increases, the dissolution efficiency of the internal solution of the dissolution zone 201 increases, and at the same time, it also means that the solution flow accelerates, and the flow rate of the solution towards the crystallization zone 202 increases. In this state, the solution is likely to carry impurities and diffuse towards the crystallization zone 202, causing impurities to adhere to the seed crystal. During crystal growth, the impurities are wrapped into the crystal interior, forming impurity inclusions, reducing the purity and quality of the crystal.

[0061] To avoid the above phenomenon, during the use of the present invention, the length of the temperature difference section between the dissolution zone 201 and the crystallization zone 202 decreases. The reduction of the temperature difference section can effectively inhibit the convection of the solution, slow down the speed of the solution entering and leaving the crystallization zone 202, avoid the phenomenon of impurity inclusion in the above crystal, and improve the crystal purity.

[0062] Therefore, the present invention adjusts the length of the dissolution zone 201 through the heat-insulating component 5 to improve the dissolution efficiency of the solution and at the same time increase the solution flow rate; by reducing the length of the temperature difference section through the heat-insulating component 5, it inhibits the solution convection, slows down the speed of the solution entering and leaving the crystallization zone 202, avoids impurity inclusion in the crystal, and improves the crystal purity. Under the complementary action of the two, a balance of the solution convection in the early stage is formed.

[0063] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An ultra-high pressure autoclave container, characterized in that: The invention comprises a segmented heater (1) and a kettle body (2) installed inside the segmented heater (1), wherein a bottom sealing member (9) and a top sealing member (10) are installed on the top and bottom of the kettle body (2) respectively, and a pressure relief heat dissipation component (11) is installed on the top sealing member (10); a baffle (203) is installed inside the kettle body (2), and the baffle (203) divides the internal space of the kettle body (2) into a crystallization zone (202) and a dissolution zone (201); the outer wall of the crystallization zone (202) is attached to an upper heat-conducting tube (3), and the outer wall of the dissolution zone (201) is attached to a lower heat-conducting tube (4); and the segmented heater (1) conducts heat to the crystallization zone (202) and the dissolution zone (201) through the upper heat-conducting tube (3) and the lower heat-conducting tube (4); A heat insulation component (5) is installed between the upper heat-conducting tube (3) and the lower heat-conducting tube (4). The heat insulation component (5) is driven by a transmission component (6). The heat insulation component (5) comprises a heat insulation folding plate (501). A heat insulation ring (503) is installed on the heat insulation folding plate (501). The heat insulation ring (503) is respectively slidably matched with the upper heat-conducting tube (3) and the lower heat-conducting tube (4). A screw sleeve rod (504) is installed on the heat insulation ring (503). The transmission component (6) comprises a stepping motor (601) and a transmission box (605). The transmission box (605) is fixedly installed on the segmented heater (1). Screw rod 2 (604) and screw rod 1 (603) are respectively installed at both ends of the transmission box (605). Screw rod 2 (604) and screw rod 1 (603) are respectively connected to the screw sleeve rod (504) in a transmission manner. The stepping motor (601) drives screw rod 1 (603) through the transmission rod (602).

2. The ultra-high pressure autoclave container according to claim 1, characterized in that: The upper heat-conducting tube (3) is provided with a top groove (7), and the lower heat-conducting tube (4) is provided with a bottom groove (8), and the screw sleeve rod (504) is respectively located in the top groove (7) and the bottom groove (8) for sliding.

3. The ultra-high pressure autoclave container according to claim 1, characterized in that: The thermal insulation folding plates (501) are connected via a rotating shaft (502). When the transmission component (6) drives the thermal insulation folding plates (501) to fold, the thermal insulation folding plates (501) are compressed, the temperature difference between the dissolution zone (201) and the crystallization zone (202) is reduced, and the thermal insulation strength of the thermal insulation folding plates (501) is increased.

4. The ultra-high pressure autoclave container according to claim 1, characterized in that: The top shaft (608) and the bottom shaft (606) are rotatably installed in the transmission box (605), the top shaft (608) is coaxially connected with the second screw rod (604), the bottom shaft (606) is coaxially connected with the first screw rod (603), an electromagnetic suction cup (607) is installed on the bottom shaft (606), a transmission boss (609) is fixedly installed on the top shaft (608), a transmission slide bar (611) is slidably installed in the transmission boss (609), a suction ring (610) and a sleeve ring (612) are respectively installed at both ends of the transmission slide bar (611), the sleeve ring (612) is connected with the transmission boss (609) through a spring (613), and the electromagnetic suction cup (607) adsorbs the suction ring (610).

5. The ultra-high pressure autoclave container according to claim 1, characterized in that: The bottom sealing member (9) comprises a bottom blocking plug (901), a bottom blocking nut (902) and a bottom blocking pull cap (904); the bottom blocking plug (901) is installed at the bottom of the kettle body (2); the bottom blocking nut (902) and the bottom blocking pull cap (904) seal the bottom blocking plug (901) at the bottom of the kettle body (2) via a bottom blocking sealing ring (903).

6. The ultra-high pressure autoclave container according to claim 1, characterized in that: The top sealing member (10) comprises an upper sealing plug (101), a clamp (102) and an upper flange (103); the upper sealing plug (101) is installed on the top of the kettle body (2); the upper flange (103) seals the upper sealing plug (101) on the top of the kettle body (2) through an upper sealing ring (104); the clamp (102) connects the upper flange (103) and the kettle body (2); a lifting eye screw (107) is installed on the top of the clamp (102); a plug raising flange (105) is installed on the top of the upper flange (103); and a plug raising bolt (106) is installed on the plug raising flange (105).

7. The ultra-high pressure autoclave container according to claim 6, characterized in that: The pressure relief and heat dissipation assembly (11) comprises a clamping nut (1101) and a heat dissipation pipe (1102); the clamping nut (1101) fixes the heat dissipation pipe (1102) to the top of the upper sealing plug (101); a three-way pipe (1103) is installed on the heat dissipation pipe (1102); a pressure relief pipe (1104) is installed on the three-way pipe (1103); and the three-way pipe (1103) is connected to a pressure gauge (1106) via a gauge rod (1105).

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