CN-116148084-B - Deep sea low-temperature environment simulation device and simulation method

CN116148084BCN 116148084 BCN116148084 BCN 116148084BCN-116148084-B

Abstract

The invention provides a deep sea low-temperature environment simulation device and a simulation method, wherein the simulation device comprises a first pressure-resistant cylinder, a heat preservation water tank and an ice machine, wherein a cooling pipeline is arranged on the periphery of the first pressure-resistant cylinder, or the side wall of the first pressure-resistant cylinder is hollow, the cooling pipeline is arranged in the side wall of the first pressure-resistant cylinder, the heat preservation water tank is communicated with the other end of the ice machine after one end of the ice machine is communicated with the heat preservation water tank through a second water return pipe, the heat preservation water tank is cooled and conveyed into the cooling pipeline by the ice machine, the first pressure-resistant cylinder is precooled, a certain amount of ice water mixture is produced by the ice machine again, the ice water mixture is conveyed into the first pressure-resistant cylinder, the temperature is controlled within a target temperature range after pressurization through partial sensible heat absorption and pressurization of ice latent heat, the temperature uniformity after pressurization in the first pressure-resistant cylinder is good, low-temperature damage to material steel of the first pressure-resistant cylinder is avoided, and high-pressure wall surface icing is avoided.

Inventors

YANG SHAOQI
XIE XIUJUAN
PAN WEI
GONG LINGHUI
XUE RUI

Assignees

中国科学院理化技术研究所

Dates

Publication Date: 20260512
Application Date: 20211119

Claims (8)

1. The deep sea low temperature environment simulation device is characterized by comprising: The device comprises a first pressure-resistant cylinder, a second pressure-resistant cylinder and a third pressure-resistant cylinder, wherein a cooling pipeline is arranged at the periphery of the first pressure-resistant cylinder; One end of the heat preservation water tank is communicated with one end of the cooling pipeline through a first water injection pipe, and the other end of the heat preservation water tank is communicated with the other end of the cooling pipeline through a first water return pipe; One end of the ice maker is communicated with the heat preservation water tank through a second water return pipe and then is communicated with the other end of the ice maker; A supercharging mechanism, the supercharging mechanism comprising: One end of the pressurized water injection pipe is communicated with the first pressure-resistant cylinder, and the other end of the pressurized water injection pipe is communicated with the heat preservation water tank; a booster pump located on the booster water injection pipe; the ice maker is characterized in that one end of the first pressure-resistant cylinder is communicated with the heat preservation water tank through a third water return pipe, the other end of the first pressure-resistant cylinder is communicated with the ice maker or the heat preservation water tank through a second water injection pipe, valves are arranged on the first water injection pipe, the second water return pipe, the third water return pipe and the second water injection pipe, and water pumps are arranged on the first water return pipe, the first water injection pipe, the third water return pipe and the second water injection pipe.
2. The deep sea low temperature environment simulation device according to claim 1, further comprising a second pressure-resistant cylinder, wherein the second pressure-resistant cylinder is sleeved on the periphery of the first pressure-resistant cylinder, and the cooling pipeline is positioned between the first pressure-resistant cylinder and the second pressure-resistant cylinder and sleeved on the periphery of the first pressure-resistant cylinder.
3. The deep sea low temperature environment simulation device according to claim 2, wherein if the second pressure-resistant cylinder is sleeved on the periphery of the first pressure-resistant cylinder, the periphery of the second pressure-resistant cylinder is also provided with an insulation layer; if a cooling pipeline is arranged in the side wall of the first pressure-resistant cylinder, an insulating layer is further arranged on the periphery of the first pressure-resistant cylinder.
4. The deep sea low temperature environment simulation device according to claim 2, wherein the second pressure-resistant cylinder comprises a second cylinder body with two open ends, the first pressure-resistant cylinder comprises a first cylinder body with two open ends and flanges respectively positioned at two ends of the first cylinder body, the second cylinder body is sleeved on the periphery of the first cylinder body, and the flanges respectively cover the openings at the two ends of the first cylinder body and the second cylinder body.
5. The deep sea low temperature environment simulation device according to claim 1, wherein a booster water injection valve is arranged on the booster water injection pipe.
6. The deep sea low temperature environment simulation device according to claim 2, wherein a water tank is arranged on the inner wall surface of the second pressure-resistant cylinder or the outer wall surface of the first pressure-resistant cylinder, and the cooling pipeline is formed by the arranged water tank.
7. The deep sea cryogenic environment simulation device of claim 1, wherein the cooling pipe is spirally curved.
8. The deep sea low-temperature environment simulation method is characterized by comprising the following steps of: providing the deep sea low temperature environment simulation device according to any one of claims 1-7; Starting the ice maker, opening a valve on the second water return pipe, taking water from the heat preservation water tank by the ice maker, cooling the water, passing through the second water return pipe, and returning the water to the heat preservation water tank; Opening valves on the first water injection pipe and the first water return pipe, wherein water in the heat preservation water tank enters the cooling pipeline through the first water injection pipe and returns to the heat preservation water tank through the first water return pipe, and the water in the cooling pipeline precools the first pressure-resistant cylinder; Placing a sample to be tested in a first pressure-resistant cylinder; Opening a valve on the second water injection pipe, extracting low-temperature water from the heat preservation water tank by the ice maker, cooling the ice-water mixture into an ice-water mixture with a certain ice content in the ice maker, and enabling the ice-water mixture to enter the first pressure-resistant cylinder through the second water injection pipe and reach a preset liquid level; then, a valve on the third water return pipe is opened, low-temperature water at the lower layer in the first pressure-resistant cylinder is returned to the heat preservation water tank, and after the circulation is carried out for a plurality of times, the water temperature in the first pressure-resistant cylinder is reduced to a preset temperature or the ice-water mixture in the first pressure-resistant cylinder reaches a preset ice content; if the deep sea low temperature environment simulation device further comprises a booster water injection pipe and a booster pump, the deep sea low temperature environment simulation method further comprises the following steps of starting the booster pump, and the booster pump pumps water in the heat preservation water tank into the first pressure-resistant cylinder to enable the pressure in the first pressure-resistant cylinder to reach preset pressure.

Description

Deep sea low-temperature environment simulation device and simulation method Technical Field The invention relates to the technical field of ocean engineering, in particular to a deep sea low-temperature environment simulation device and a simulation method. Background The deep sea chest has the characteristics of ultrahigh pressure (about 110MPa at the deepest point), low temperature (2-4 ℃), and the like. For the deep sea simulation device, the deep sea pressure can realize land simulation through the pressurizing device and the pressure-resistant cylinder. However, the temperature simulation of the deep sea pressure is difficult, the root cause is that the water in the pressure barrel hardly flows after the pressure is increased to 10MPa-200MPa in the simulation device, the heat exchange is mainly realized by the heat conduction of the water, the heat conduction coefficient of the water is small, the heat conduction resistance of the unit thickness is large, the internal energy of the water is increased when the simulation device is pressurized, the temperature is increased, and the heat needs to be taken away as soon as possible in order to realize the temperature control at 2-4 ℃ after the pressurization. According to the heat transfer law, in order to reduce the cooling time, promote simulation experiment efficiency, the accessible increases heat transfer difference in temperature and reduces the heat transfer route and realize. For the microminiature deep sea high pressure analog device, the prior art generally arranges a cooling jacket on the outer wall of the cylinder, and then injects cooling medium into the cooling jacket, and the cooling medium takes away the heat of the environment in the cylinder through the heat conduction of the cylinder wall due to the small size and short heat conduction path. And the high-pressure analog device with large volume deep sea is used as the main development trend in the future in the field. Because of the large size, the thermal conductivity of water is far lower than that of steel, and the thermal resistance of high-pressure static water after pressurization is the main thermal conductivity. In order to achieve the purpose of simulating the high pressure and the low temperature of the deep sea, the method is difficult to realize by adopting a measure of passing a cooling medium (usually a low-temperature working medium of-20 ℃ to-40 ℃) through a water jacket or a coil pipe in the middle or the outer layer of the pressurizing cylinder wall, the temperature of the cooling medium cannot be too low, and the low-temperature performance of the cylinder wall pressure-resistant steel and the damage of freezing of a high-pressure water wall surface are considered. Therefore, the low-temperature rapid and effective control in the deep sea high-pressure analog device cylinder cannot be realized by adopting the traditional technical route. Disclosure of Invention In view of the above, the present invention provides a deep sea low temperature environment simulation device and a simulation method, which solve or at least partially solve the technical defects existing in the prior art. To achieve the above object, in a first aspect, the present invention provides a deep sea low temperature environment simulation apparatus, comprising: The device comprises a first pressure-resistant cylinder, a second pressure-resistant cylinder and a third pressure-resistant cylinder, wherein a cooling pipeline is arranged at the periphery of the first pressure-resistant cylinder; One end of the heat preservation water tank is communicated with one end of the cooling pipeline through a first water injection pipe, and the other end of the heat preservation water tank is communicated with the other end of the cooling pipeline through a first water return pipe; One end of the ice maker is communicated with the heat preservation water tank through a second water return pipe and then is communicated with the other end of the ice maker; One end of the first pressure-resistant cylinder is communicated with the heat preservation water tank through a third water return pipe, the other end of the first pressure-resistant cylinder is communicated with the ice maker or the heat preservation water tank through a second water injection pipe, and valves are arranged on the first water injection pipe, the first water return pipe, the second water return pipe, the third water return pipe and the second water injection pipe. Preferably, the deep sea low temperature environment simulation device further comprises a pressurizing mechanism, and the pressurizing mechanism comprises: One end of the pressurized water injection pipe is communicated with the first pressure-resistant cylinder, and the other end of the pressurized water injection pipe is communicated with the heat preservation water tank; And the booster pump is positioned on the booster water injection pipe. Preferably, the deep sea low temperature e