Cold sealing type high-temperature and high-pressure kettle with cold circulation

Abstract

The utility model relates to the technical field of high-temperature and high-pressure kettles, in particular to a cold sealing type high-temperature and high-pressure kettle with cold circulation, which comprises a pressure monitoring component, a circulating water cooling area is arranged in the pressure monitoring component in a penetrating manner, a high-temperature area is arranged in the circulating water cooling area in a penetrating manner, and a cold area is fixed at one end of the high-temperature area. The end, connected with the high-temperature area, of the cold area is located in the circulating water cooling area, the cold area and the high-temperature area are integrally formed, the end, away from the high-temperature area, of the cold area is connected with a cold sealing end in a sealed mode, and the pressure monitoring assembly is provided with a circulating water inlet pipe and a circulating water outlet pipe. According to the utility model, multi-temperature-zone control can be carried out in the container, and the temperature gradient with controllable requirements can be met for the container, so that the temperature in the container can be accurately, economically and efficiently controlled, an ultra-high-temperature and high-pressure test environment is realized, and the optimal sealing effect is met.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature and high-pressure autoclaves, in particular to a cold-sealed high-temperature and high-pressure autoclave with a self-contained cold cycle. Background Art

[0002] The existing cold-sealed autoclave connects the high-temperature zone and the cold zone through a double cone, and the temperature probe is a cone that gradually decreases from top to bottom. The outer diameter of the cone matches and fits the inner diameter of the high and low temperature zones, so that there is no gap between the high and low temperature zones. By setting the circulating water temperature, pure water is used as a heat exchange refrigerant, which can not only achieve rapid and continuous cooling of the autoclave body, but also create an effective temperature difference area, similar to the temperature difference from the deep crust to the surface of the earth. Usually, the distance from the surface to the mantle is between 10-50 kilometers, and most mineral rock formation is within 20km. The cold-sealed self-contained cold circulation high-temperature and high-pressure reactor described in the utility model patent realizes the earth's mineralization environment with the most practical temperature and pressure environment, which is convenient for addressing the authenticity and efficiency of mineral rock formation and mineralization chemical experiments.

[0003] Regardless of rock formation, mineralization, crystallization or laboratory pressure experiments, high temperature and high pressure environments are required. This experiment provides experimental environments in different temperature zones under ultra-high pressure environments. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a cold-sealed high-temperature autoclave with self-cooling circulation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cold-sealed self-contained cold-circulation high-temperature autoclave comprises a pressure monitoring component, wherein a circulating water cooling zone is provided through the pressure monitoring component, wherein a high-temperature zone is provided through the circulating water cooling zone, a cold zone is fixed at one end of the high-temperature zone, an end at which the cold zone and the high-temperature zone are connected is located in the circulating water cooling zone, the cold zone and the high-temperature zone are integrally formed, an end of the cold zone away from the high-temperature zone is sealed and connected to a cold-sealed end, and a circulating water inlet pipe and a circulating water outlet pipe are provided on the pressure monitoring component.

[0007] Compared with the prior art, the utility model can control multiple temperature zones in the container, can meet the requirements of a controllable temperature gradient for the container, thereby accurately and economically controlling the temperature in the container, realizing an ultra-high temperature and high pressure test environment, and achieving the best sealing effect.

[0008] Preferably, a circulating water convection zone is provided inside the circulating water cooling zone, a heat exchange zone is provided inside the circulating water convection zone, the circulating water convection zone and the heat exchange zone are located in the pressure monitoring component, and the high temperature zone and the cold zone are both located in the heat exchange zone.

[0009] Furthermore, it can stably exchange heat to quickly achieve temperature changes, so that the high temperature zone and the cold zone can effectively achieve an isostatic pressure large temperature difference space of up to 1100°C. The experimental samples can form a volcanic eruption process simulation experiment in this space to achieve a real crustal diagenesis process simulation experimental environment.

[0010] Preferably, the high temperature zone and the cold zone are both made of nickel-based alloy, and the density of the nickel-based alloy is 8.90 g / cm³.

[0011] Furthermore, the kettle body is processed from a whole nickel rod. In actual production and preparation, the cold exchange area is 50 mm long and has a volume of approximately 20 cubic millimeters. The kettle body is made of a nickel-based alloy with a density of 8.90 g / cm3. The temperature of up to 1100°C can be reduced to 30° in 30 seconds. The nickel-based alloy is suitable for this situation.

[0012] Preferably, the sealing between the cold seal end and the cold zone adopts a conical sealing structure, and the surface finish of the inner conical surface of the cold seal end and the outer conical surface of the cold zone is higher than Ra0.8.

[0013] Furthermore, the sealing effect is ensured.

[0014] Preferably, the high temperature zone and the cold zone are hollow.

[0015] Furthermore, it is convenient to carry out simulation experiments on materials inside it.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. Through overall processing, there are no connectors or seals in the high temperature area, and the water cooling device is completely isolated from the experiment to avoid contamination of the experimental samples and affect the experimental results;

[0018] 2. Through the use of telescopic rods, springs, blocks, sealing rings and other components, the thermocouple joint can be more conveniently and stably installed on the double cavity, which improves the convenience of connecting the thermocouple joint with the double cavity. At the same time, it can increase the sealing effect in the pressure medium inlet to avoid pressure leakage, effectively ensuring the stability of the operation of the multi-temperature zone calibrator;

[0019] In summary, the utility model can simulate the real environment of crustal rock formation and mineralization, and achieve the simulated volcanic eruption effect of high-temperature melting and rapid quenching. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural diagram of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 This is a cross-sectional view of the circulating water cooling area of ​​the utility model;

[0023] Figure 4 This is a three-view diagram of the pressure monitoring component of the utility model;

[0024] In the figure: 1 high temperature zone, 2 circulating water cooling zone, 3 cold zone, 4 cold sealing end, 5 pressure monitoring component, 6 circulating water convection zone, 7 heat exchange zone, 8 circulating water inlet pipe, 9 circulating water outlet pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-4 A cold-sealed self-contained cold cycle high-temperature autoclave comprises a pressure monitoring component 5, a circulating water cooling zone 2 is provided in the pressure monitoring component 5, a circulating water convection zone 6 is provided in the circulating water cooling zone 2, a heat exchange zone 7 is provided in the circulating water convection zone 6, the circulating water convection zone 6 and the heat exchange zone 7 are located in the pressure monitoring component 5, the high temperature zone 1 and the cold zone 3 are both located in the heat exchange zone 7, the high temperature zone 1 is provided in the circulating water cooling zone 2, the cold zone 3 is fixed at one end of the high temperature zone 1, the circulating water cooler isolates the high temperature zone 1 from the cold zone 3, the circulating water cooler is a key component, so that the efficiency of the cold zone 3 can be controlled; because the seal is arranged in the cold zone 3, a reliable sealing effect can be achieved, and the high temperature zone 1 and the cold zone 3 are both adopted Nickel-based alloy, the density of nickel-based alloy is 8.90g / cm³, one end where the cold zone 3 and the high temperature zone 1 are connected is located in the circulating water cooling zone 2, the high temperature zone 1 and the cold zone 3 are hollow, the cold zone 3 and the high temperature zone 1 are integrally formed, the end of the cold zone 3 away from the high temperature zone 1 is sealed and connected with a cold sealing end 4, a circulating water cooling zone 2 is added in the middle part, the kettle body is divided into the cold zone 3, the high temperature zone 1 and the cold sealing end 4 are connected to the boosting equipment by the cold sealing end and the high pressure pipeline to realize the isostatic closed loop structure, the sealing of the cold sealing end 4 and the cold zone 3 adopts a conical sealing structure, the surface finish of the inner cone of the cold sealing end 4 and the outer cone of the cold zone 3 is higher than Ra0.8, and the pressure monitoring component 5 is provided with a circulating water inlet pipe 8 and a circulating water outlet pipe 9.

[0027] Reference Figure 1-2, the high temperature zone 1 enters the tubular furnace and is heated by the electric furnace. The control system controls the electric furnace to heat the cold-sealed self-contained cold cycle high temperature and high pressure reactor according to the experimental requirements. The electric furnace is equipped with a thermocouple for real-time sampling and closed-loop control of the furnace temperature to achieve the experimental temperature required by the cold-sealed self-contained cold cycle high temperature and high pressure reactor. Under the experimental conditions that the experimental temperature is usually 1100° and the pressure is 3000Bar, it is very difficult to achieve sealing without separating the hot and cold zones. The circulating water cooling zone 2 adjusts the circulating water temperature through the chiller to reduce the middle temperature of the kettle body to the required temperature range to achieve favorable conditions for cold end sealing 4.

[0028] Reference Figure 2-4 The cold zone 3 is in the high temperature zone 1, realizing an isostatic pressure large temperature difference space up to 1100°C. The experimental samples can form a volcanic eruption process simulation experiment in this space to achieve a real crust diagenesis process simulation experimental environment. There is a 60° cone surface on the inner wall of the cold sealing end 4 of the pressure medium inlet, which is completely combined with the high-pressure pipe sealing cone body. The sealing cone surface is made of 316L stainless steel. Because it is already at room temperature, high-pressure sealing only requires cone surface sealing.

[0029] In the present utility model, when in use, the high temperature zone 1 is heated by the electric heating furnace in the electric heating furnace, and is heated to a predetermined temperature by the control system through pulse width modulation control. The circulating water cooling zone 2 is heat exchanged by the circulating water cooler, and the circulating water cooler is responsible for circulating and exchanging heat by the circulating water machine. The water convection channel in the circulating water convection zone 6 performs fast and efficient water circulation. Since the cold exchange area is 50 mm long and the volume is about 20 cubic millimeters, the kettle body adopts a nickel-based alloy with a density of 8.90 g / cm³, and the temperature is reduced from a maximum of 1100°C to 30° in 30 seconds, the heat exchange power is calculated as follows:

[0030] The mass of nickel-based alloy: the volume of nickel-based alloy (V=18, the density of the alloy is 8.90g / cm3). Therefore, the mass of nickel-based alloy is: [m=\rho\timesV=8.90,\text{g / cm}^3\times18,\text{cm}^3=160.2,\text{g}=0.1602kg;

[0031] Calculate heat change: Using the previous specific heat capacity (c\approx500,\text{J / (kg·°C)}) and the temperature change (\DeltaT=1100,\text{°C}-30,\text{°C}=1070,\text{°C}). The amount of heat (Q) to be removed is: [Q=m\times\times\DeltaT=0.1602,\text{kg}\times500,\text{J / (kg·°C)}\times1070,\text{°C}=85607,\text{J}];

[0032] Calculate the required power: Cooling time (t=30,\text{s}): [P=\frac{Q}{t}=\frac{85607,\text{J}}{30,\text{s}}\approx2853.57,\text{W}];

[0033] The chiller includes a refrigeration compressor. The power of a refrigeration cycle machine is generally said to be 3.8 horsepower. You can choose a 5-horsepower refrigeration cycle water machine.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cold-sealed high-temperature autoclave with self-contained cold circulation, comprising a pressure monitoring component (5), characterized in that: A circulating water cooling zone (2) is provided through the pressure monitoring component (5), a high temperature zone (1) is provided through the circulating water cooling zone (2), a cold zone (3) is fixed to one end of the high temperature zone (1), an end of the cold zone (3) connected to the high temperature zone (1) is located in the circulating water cooling zone (2), the cold zone (3) and the high temperature zone (1) are integrally formed, and an end of the cold zone (3) away from the high temperature zone (1) is sealed and connected to a cold sealing end (4), and a circulating water inlet pipe (8) and a circulating water outlet pipe (9) are provided on the pressure monitoring component (5).

2. The cold-sealed self-contained cold cycle high-temperature autoclave according to claim 1, characterized in that: The circulating water cooling zone (2) is provided with a circulating water convection zone (6), the circulating water convection zone (6) is provided with a heat exchange zone (7), the circulating water convection zone (6) and the heat exchange zone (7) are located in the pressure monitoring component (5), and the high temperature zone (1) and the cold zone (3) are both located in the heat exchange zone (7).

3. The cold-sealed self-contained cold cycle high-temperature autoclave according to claim 2, characterized in that: The high temperature zone (1) and the cold zone (3) are both made of nickel-based alloy, and the density of the nickel-based alloy is 8.90 g / cm³.

4. The cold-sealed self-contained cold cycle high-temperature autoclave according to claim 3, characterized in that: The sealing between the cold sealing end (4) and the cold zone (3) adopts a conical sealing structure, and the surface finish of the inner conical surface of the cold sealing end (4) and the outer conical surface of the cold zone (3) is higher than Ra0.

8.

5. The cold-sealed self-contained cold cycle high-temperature autoclave according to claim 4, characterized in that: The high temperature zone (1) and the cold zone (3) are hollow.

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