阅读说明：本技术 大尺度高压模拟舱压力转换控制系统及方法 (Pressure conversion control system and method for large-scale high-pressure simulation cabin ) 是由 张偲 冯景春 杨志峰 孙龙涛 李洁 郑红波 于 2020-03-26 设计创作，主要内容包括：本发明提供一种大尺度高压模拟舱压力转换控制系统,包括：高压模拟腔；设置在高压模拟腔上的压力平衡舱和高压环境保障单元；压力平衡舱用于对系统进行样本布放、取样和提供压力转换环境；高压环境保障单元用于保障高压模拟腔内部压力稳定；还包括处理控制终端和若干个压力传感器；所述压力传感器输出端与所述处理控制终端输入端电性连接；所述处理控制终端输出端与所述压力平衡舱、高压环境保障单元控制端电性连接。本发明还提供的该系统的控制方法,实现了大尺度高压模拟舱的高压环境模拟,并且通过高压环境保障单元实时调整高压模拟舱内的压力值；同时,通过压力平衡舱实现高压模拟环境和实验条件环境的增压降压操作,有效地进行压力平衡转换。(The invention provides a pressure conversion control system of a large-scale high-pressure simulation cabin, which comprises: a high pressure simulation chamber; the pressure balance cabin and the high-pressure environment protection unit are arranged on the high-pressure simulation cavity; the pressure balance cabin is used for distributing and sampling samples for the system and providing a pressure conversion environment; the high-pressure environment guaranteeing unit is used for guaranteeing the internal pressure stability of the high-pressure simulation cavity; the device also comprises a processing control terminal and a plurality of pressure sensors; the output end of the pressure sensor is electrically connected with the input end of the processing control terminal; and the output end of the processing control terminal is electrically connected with the pressure balance cabin and the control end of the high-pressure environment protection unit. The invention also provides a control method of the system, which realizes the high-pressure environment simulation of the large-scale high-pressure simulation cabin and adjusts the pressure value in the high-pressure simulation cabin in real time through the high-pressure environment guarantee unit; meanwhile, the pressurization and depressurization operation of a high-pressure simulation environment and an experimental condition environment is realized through the pressure balance cabin, and pressure balance conversion is effectively carried out.)

1. Large-scale hyperbaric simulation cabin pressure conversion control system characterized by includes:

the high-pressure simulation cavity (1) comprises a cavity body (11) and a plurality of simulation cabin bottom layers (12) arranged in the cavity body (11);

the pressure balance cabin (2) and the high-pressure environment protection unit (3) are arranged on the high-pressure simulation cavity (1); the pressure balance cabin (2) is used for distributing samples and sampling the system to provide a pressure conversion environment; the high-pressure environment guaranteeing unit (3) is used for guaranteeing the stability of the internal pressure of the high-pressure simulation cavity (1);

the simulation system also comprises a processing control terminal (4) and a plurality of pressure sensors (5) arranged on the simulation cabin bottom layer (12); the output end of the pressure sensor (5) is electrically connected with the input end of the processing control terminal (4);

the output end of the processing control terminal (4) is electrically connected with the pressure balance cabin (2) and the control end of the high-pressure environment protection unit (3).

2. The pressure conversion control system for the large-scale hyperbaric simulation chamber according to claim 1, wherein the simulation chamber bottom layer (12) comprises a secondary oxygen oxidation zone (121) and an anaerobic oxidation zone (122); the secondary oxygen oxidation zone (121) and the anaerobic oxidation zone (122) are used for environmental simulation inside the large-scale hyperbaric simulation chamber.

3. The pressure conversion control system of the large-scale hyperbaric simulation chamber according to claim 1, wherein the pressure balance chamber (2) comprises an inner chamber door (21), an outer chamber door (22), and a pressure detector (23) and a pressure balance unit (24) arranged in the chamber; wherein:

controlling the open and close states of the high-pressure simulation cavity (1) and the pressure balance cabin (2) through the inner side cabin door (21);

controlling the open and close state of the pressure balance cabin (2) and the external experimental environment through the outside cabin door (22);

the pressure detector (23) is used for detecting the pressure condition in the cabin;

the pressure balancing unit (24) is used for adjusting the pressure in the pressure balancing cabin (2);

the control ends of the inner side cabin door (21), the outer side cabin door (22) and the pressure balancing unit (24) are electrically connected with the processing control terminal (4);

the output end of the pressure detector (23) is electrically connected with the input end of the processing control terminal (4).

4. The large-scale hyperbaric chamber pressure conversion control system according to claim 3, characterized in that said pressure equalizing unit (24) comprises a drainage system (241) and an exhaust system (242) arranged inside said pressure equalizing chamber (2); the control ends of the drainage system (241) and the exhaust system (242) are electrically connected with the processing control terminal (4); and discharging water and gas in the pressure balance chamber (2) through the water discharging system (241) and the air discharging system (242), thereby controlling the pressure change in the pressure balance chamber (2).

5. The pressure conversion control system of the large-scale high-pressure simulation cabin according to claim 1, wherein the high-pressure environment protection unit (3) comprises a gas-liquid pressurization system (31) and a gas-water circulation system (32); wherein:

the control ends of the gas-liquid pressurization system (31) and the gas-water circulation system (32) are electrically connected with the processing control terminal (4);

the gas-liquid pressurization system (31) injects liquid and gas into the high-pressure simulation cavity (1) according to a set value of pressure, so that the high-pressure simulation cavity (1) reaches the set value;

the gas-water circulation system (32) extracts gas and liquid in the high-pressure simulation cavity (1) and injects the gas and liquid into the high-pressure simulation cavity for circulation, so that the function of changing the pressure value in the high-pressure simulation cavity (1) in real time is achieved.

6. The large-scale high-pressure simulation cabin pressure conversion control system according to claim 5, wherein the gas-liquid pressurization system (31) comprises a liquid storage (311), a liquid injection pump (312), a liquid flow meter (313), a regulating valve group (314), a high-pressure gas source (315), a gas pressurization pump (316), an air compressor (317), and a buffer container (318); wherein:

the liquid storage (311) is connected with the high-pressure simulation cavity (1) through the liquid injection pump (312);

the liquid flow meter (313) and the regulating valve group (314) are arranged at the outlet of the liquid injection pump (312);

the high-pressure gas source (315) is connected with the inlet of the buffer container (318) through the gas booster pump (316);

the gas booster pump (316) is connected with the air compressor (317);

the outlet of the buffer container (318) is connected with the high-pressure simulation cavity (1);

the control ends of the liquid injection pump (312), the regulating valve group (314), the gas booster pump (316) and the air compressor (317) are electrically connected with the processing control terminal (4);

the input end of the processing control terminal (4) is electrically connected with the output end of the liquid flowmeter (313).

7. The pressure conversion control system for the large-scale high-pressure simulation cabin according to claim 5, wherein the air and water circulating system (32) comprises a circulating pipeline, an axial flow pump set, an exhaust pipeline and a liquid storage device; wherein:

the input end and the output end of the circulating pipeline are respectively arranged at the bottom and the top of the high-pressure simulation cavity (1) and are communicated with the high-pressure simulation cavity (1);

the axial flow pump set, the exhaust pipeline and the liquid storage device are all connected with the circulating pipeline;

and the control end of the axial flow pump set is electrically connected with the processing control terminal (4).

8. The pressure conversion control system for the large-scale high-pressure simulation cabin according to any one of claims 1 to 7, wherein the processing control terminal (4) comprises a data collector (41), a central processing unit (42), a memory (43) and a display (44); wherein:

the input end of the data acquisition unit (41) is electrically connected with the output end of the pressure sensor (5);

the output end of the data acquisition unit (41) is electrically connected with the input end of the central processing unit (42);

the output end of the central processing unit (42) is electrically connected with the pressure balance cabin (2), the high-pressure environment protection unit (3) and the control end of the display (44);

the central processing unit (42) is electrically connected with the memory (43) to realize information interaction.

9. The pressure conversion control method for the large-scale high-pressure simulation cabin is characterized by comprising the following steps of:

s1: calculating the gas quantity, the liquid quantity, the gas injection rate and the liquid injection rate to be injected according to the actual effective volume of the high-pressure simulation cavity (1), the pressure value to be achieved and the pressurization time requirement;

s2: opening the gas-liquid pressurization system (31) according to the calculation result, injecting liquid and gas into the high-pressure simulation cavity (1), and marking the high-pressure environment to be simulated in place when the pressure value in the high-pressure simulation cavity (1) reaches a set value in the estimated time;

s3: the pressure change in the high-pressure simulation cavity (1) is controlled in real time by controlling the gas and water circulating system (32); when working condition operation needs to be carried out in the high-pressure simulation cavity (1), the pressure balance operation is carried out on the high-pressure simulation cavity (1) through the pressure balance cabin (2), and conversion control of the pressure of the high-pressure simulation cabin is achieved.

10. The pressure conversion control method for the large-scale hyperbaric simulation chamber according to claim 9, wherein the pressure balancing operation comprises a pressure increasing operation and a pressure decreasing operation, and specifically comprises the following steps:

and (3) pressurization operation: firstly, ensuring that an inner side cabin door (21) and an outer side cabin door (22) of a pressure balance cabin (2) are in a closed state, then opening the inner side cabin door (21), and enabling gas-liquid fluid in a high-pressure simulation cavity (1) to enter the pressure balance cabin (2); when the pressure monitoring values in the pressure balance cabin (2) and the high-pressure simulation cavity (1) are consistent, the mark reaches a pressure balance state; at the moment, instrument tools in the pressure balance cabin (2) can be controlled to enter the high-pressure simulation cavity (1) for working condition operation;

and (3) pressure reduction operation: firstly, closing an inner side cabin door (21) of a pressure balance cabin (2), then opening a drainage system (241) and an exhaust system (242) to perform decompression operation on the pressure balance cabin (2), and when a pressure detection value in the pressure balance cabin (2) is consistent with the external experiment environment pressure, marking to reach a pressure balance state; the outside hatch (22) is now open and the sample taken from the high-pressure simulation chamber (1) can be sent to the laboratory environment.

Technical Field

The invention relates to the technical field of ocean engineering, in particular to a pressure conversion control system and method for a large-scale high-pressure simulation cabin.

Background

A large-scale deep sea high-pressure environment simulation technology is an important hand grip for researching deep sea frontier science. The high-pressure environment simulation technology needs to invert the high-pressure environment of deep sea, the large-scale high-pressure environment simulation technology requires safe pressurization and decompression operation on a large-scale simulation cabin in a required time, and when deep sea forward-edge scientific problems such as a deep sea ecosystem are researched, a sample is distributed and sampled in the large-scale high-pressure simulation environment, or maintenance operation is carried out in the high-pressure working state environment, and other pressure conversion technologies are needed.

Disclosure of Invention

The invention provides a pressure conversion control system and method for a large-scale high-pressure simulation cabin, aiming at overcoming the technical defect that the existing pressure control technology cannot meet the requirement of pressure balance adjustment in the actual operation of a large-scale high-pressure simulation environment.

In order to solve the technical problems, the technical scheme of the invention is as follows:

large-scale hyperbaric simulation cabin pressure conversion control system includes:

the high-pressure simulation cavity comprises a cavity body and a plurality of simulation cabin bottom layers of deep sea bottom sediment environments arranged in the cavity body;

the pressure balance cabin and the high-pressure environment protection unit are arranged on the high-pressure simulation cavity; the pressure balance cabin is used for distributing and sampling samples to the system to provide a pressure conversion environment; the high-pressure environment guaranteeing unit is used for guaranteeing the pressure inside the high-pressure simulation cavity to be stable;

the simulation cabin further comprises a processing control terminal and a plurality of pressure sensors arranged on the bottom layer of the simulation cabin; the output end of the pressure sensor is electrically connected with the input end of the processing control terminal;

and the output end of the processing control terminal is electrically connected with the pressure balance cabin and the control end of the high-pressure environment protection unit.

Wherein the bottom layer of the simulation cabin comprises a sub-oxygen oxidation zone and an anaerobic oxidation zone; the secondary oxygen oxidation zone and the anaerobic oxidation zone are used for simulating the environment of the submarine sediments in the large-scale high-pressure simulation cabin.

The pressure balance cabin comprises an inner cabin door, an outer cabin door, a pressure detector and a pressure balance unit, wherein the pressure detector and the pressure balance unit are arranged in the cabin; wherein:

controlling the open and close states of the high-pressure simulation cavity and the pressure balance cabin through the inner cabin door;

controlling the open-close state of the pressure balance cabin and the external experimental environment through the outside cabin door;

the pressure detector is used for detecting the pressure condition in the cabin;

the pressure balancing unit is used for adjusting the pressure in the pressure balancing cabin;

the inner side cabin door, the outer side cabin door and the pressure balancing unit control end are electrically connected with the processing control terminal;

the output end of the pressure detector is electrically connected with the input end of the processing control terminal.

Wherein the pressure balancing unit comprises a drainage system and an exhaust system arranged in the pressure balancing cabin; the control ends of the drainage system and the exhaust system are electrically connected with the processing control terminal; and discharging water and gas in the pressure balance cabin through the drainage system and the exhaust system so as to control the pressure change in the pressure balance cabin.

The high-pressure environment guaranteeing unit comprises a gas-liquid pressurization system and a gas-water circulation system; wherein:

the control ends of the gas-liquid pressurization system and the gas-water circulation system are electrically connected with the processing control terminal;

the gas-liquid pressurization system injects liquid and gas into the high-pressure simulation cavity according to a set value of pressure, so that the pressure of the high-pressure simulation cavity reaches the set value;

the gas-water circulation system extracts gas and liquid in the high-pressure simulation cavity and injects the gas and liquid into the high-pressure simulation cavity for circulation, so that the function of changing the pressure value in the high-pressure simulation cavity in real time is achieved.

The gas-liquid pressurization system comprises a liquid storage, a liquid injection pump, a liquid flow meter, a regulating valve group, a high-pressure gas source, a gas pressurization pump, an air compressor and a buffer container; wherein:

the liquid storage is connected with the high-pressure simulation cavity through the liquid injection pump and a liquid injection pipeline system;

the liquid flowmeter and the regulating valve group are arranged at the outlet of the liquid injection pump;

the high-pressure gas source is connected with the inlet of the buffer container through the gas booster pump and a gas injection pipeline;

the gas booster pump is connected with the air compressor;

the outlet of the buffer container is connected with the high-pressure simulation cavity;

the control ends of the liquid injection pump, the regulating valve group, the gas booster pump and the air compressor are electrically connected with the processing control terminal;

and the input end of the processing control terminal is electrically connected with the output end of the liquid flowmeter.

The air and water circulating system comprises a circulating pipeline, an axial flow pump set, an exhaust pipeline and a liquid storage device; wherein:

the input end and the output end of the circulating pipeline are respectively arranged at the bottom and the top of the high-pressure simulation cavity and are communicated with the high-pressure simulation cavity;

the axial flow pump set, the exhaust pipeline and the liquid storage device are all connected with the circulating pipeline;

and the control end of the axial flow pump set is electrically connected with the processing control terminal.

The processing control terminal comprises a data acquisition unit, a central processing unit, a memory and a display; wherein:

the input end of the data acquisition unit is electrically connected with the output end of the pressure sensor;

the output end of the data acquisition unit is electrically connected with the input end of the central processing unit;

the output end of the central processing unit is electrically connected with the pressure balance cabin, the high-pressure environment guaranteeing unit and the display control end;

the central processing unit is electrically connected with the memory to realize information interaction.

The pressure conversion control method for the large-scale high-pressure simulation cabin comprises the following steps:

s1: calculating the gas quantity, liquid quantity, gas injection rate and liquid injection rate to be injected according to the actual effective volume of the high-pressure simulation cavity, the pressure value to be achieved and the pressurization time requirement;

s2: opening a gas-liquid pressurization system according to the calculation result, injecting liquid and gas into the high-pressure simulation cavity, and marking the high-pressure environment to be simulated in place when the pressure value in the high-pressure simulation cavity reaches a set value in the estimated time;

s3: the pressure change in the high-pressure simulation cavity is controlled in real time by controlling a gas and water circulating system; when working condition operation needs to be carried out in the high-pressure simulation cavity, the pressure balance operation is carried out on the high-pressure simulation cavity through the pressure balance cabin, and the conversion control of the pressure of the high-pressure simulation cabin is achieved.

Wherein, the pressure balance operation comprises a pressure increasing operation and a pressure reducing operation, and specifically comprises the following steps:

and (3) pressurization operation: firstly, ensuring that an inner side cabin door and an outer side cabin door of a pressure balance cabin are in a closed state, and then opening the inner side cabin door, so that gas-liquid fluid in a high-pressure simulation cavity can enter the pressure balance cabin; when the pressure monitoring values in the pressure balance cabin and the high-pressure simulation cavity are consistent, the mark reaches a pressure balance state; at the moment, instrument tools in the pressure balance cabin can be controlled to enter the high-pressure simulation cavity for working condition operation;

and (3) pressure reduction operation: firstly, closing a cabin door on the inner side of a pressure balance cabin, then opening a drainage system and an exhaust system to perform decompression operation on the pressure balance cabin, and marking that the pressure balance state is reached when a pressure detection value in the pressure balance cabin is consistent with the external experiment environment pressure; the outside hatch is now opened and the sample obtained from the high pressure simulation chamber can be sent to the laboratory environment.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that:

the invention provides a pressure conversion control system and a pressure conversion control method for a large-scale high-pressure simulation cabin, which realize high-pressure environment simulation of the large-scale high-pressure simulation cabin on the basis of the existing pressure control technology, and adjust the pressure value in the high-pressure simulation cabin in real time through a high-pressure environment guarantee unit; meanwhile, the pressurization and depressurization operation of a high-pressure simulation environment and an experimental condition environment is realized through the pressure balance cabin, and pressure balance conversion is effectively carried out.

Drawings

FIG. 1 is a schematic structural diagram of a pressure conversion control system of a large-scale high-pressure simulation cabin;

FIG. 2 is a schematic diagram of a circuit module connection of a large-scale high-pressure simulation cabin pressure conversion control system;

FIG. 3 is a schematic flow chart of a pressure conversion control method for a large-scale hyperbaric simulation chamber;

wherein: 1. a high pressure simulation chamber; 11. a cavity; 12. simulating a cabin bottom layer; 121. a sub-oxygen oxidation zone; 122. an anaerobic oxidation zone; 2. a pressure balance chamber; 21. an inside hatch door; 22. an outboard hatch door; 23. a pressure detector; 24. a pressure balancing unit; 241. a drainage system; 242. an exhaust system; 3. a high-pressure environment protection unit; 31. a gas-liquid pressurization system; 311. a fluid reservoir; 312. a liquid injection pump; 313. a liquid flow meter; 314. an adjusting valve group; 315. a high pressure gas source; 316. a gas booster pump; 317. an air compressor; 318. a buffer container; 32. a gas and water circulation system; 4. a processing control terminal; 41. a data acquisition unit; 42. a central processing unit; 43. a memory; 44. a display; 5. a pressure sensor.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent;

for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;

it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.