A device for simulating and measuring the thermocline of seawater

Abstract

The invention discloses a marine thermocline simulation and measurement device, comprising a heat preservation barrel, a first thermostatic tank, a second thermostatic tank, a first circulating water chiller, a second circulating water chiller, a sampling system and a multi-channel temperature measurement system, wherein the first thermostatic tank is located at the bottom of the heat preservation barrel, the second thermostatic tank is located at the top of the heat preservation barrel, the first thermostatic tank is connected to the first circulating water chiller through a first silicone hose, the second thermostatic tank is connected to the second circulating water chiller through a second silicone hose, the first circulating water chiller and the second circulating water chiller are both located outside the heat preservation barrel, and the heat preservation barrel is provided with a sampling system and a multi-channel temperature measurement system which are longitudinally parallel to each other. The simulation device generates a seawater thermocline in a laboratory, and the built-in sampling system is used to take out seawater samples for measuring seawater chemical elements, so as to obtain the longitudinal variation law of seawater chemical elements in the simulated seawater thermocline.

Description

Technical Field

[0001] The invention relates to a marine environment simulation and measurement device, and more specifically, to a seawater thermocline simulation and measurement device. Background Art

[0002] Thermocline refers to a step-shaped water layer where the temperature of seawater changes drastically or discontinuously with depth. Thermoclines are ubiquitous in the ocean, from surface water of a few meters or tens of meters to deep water of hundreds or thousands of meters. The intensity, thickness and distribution of thermoclines are very complex, and the chemical elements of seawater such as seawater density, temperature, dissolved oxygen, pH value and salinity in thermoclines change dramatically.

[0003] The thermocline of seawater has an important impact on the development of the marine economy. In recent years, with the rapid development of the marine economy, a large number of marine engineering equipment such as cross-sea bridges, offshore wind power, offshore oil platforms and marine fishery equipment have emerged in my country. The above marine engineering equipment is located in or across the thermocline. The drastic changes in the chemical elements of seawater in the thermocline cause serious corrosion of the marine engineering equipment in the area, which seriously affects the normal production and operation activities and causes huge losses. A survey pointed out that in 2014, the total cost of corrosion in China was about 2.1 trillion yuan, accounting for 3.34% of the GDP of that year, of which the loss of marine corrosion was about 700 billion yuan, accounting for 1 / 3 of the total corrosion cost.

[0004] Thermocline also has a very important impact on ship activities. Thermocline is a natural barrier for submarines to hide themselves, with dramatic changes in seawater temperature, salinity, density and pressure. It can effectively prevent sonar detection, but it is also dangerous. Because the rapid change in pressure may directly press the submarine to the bottom of the sea, if the maximum diving depth is exceeded, the ship will be destroyed and people will die. In 1963, the USS Thresher, a nuclear submarine with a displacement of 5,000 tons, encountered the thermocline of seawater. The density of seawater dropped sharply, causing the submarine to fall directly to the bottom of the sea 3,000 meters deep. The huge water pressure eventually tore the submarine into pieces, and none of the 140 sailors survived. In addition, the Israeli submarine Dakar in 1968 and the Argentine submarine San Juan in 2017 were both killed due to sudden encounters with thermoclines.

[0005] Systematic research on seawater thermoclines is of great significance to the healthy development of the marine economy and the safety of military navigation. The existing ocean thermo(salinity)cline simulation devices have complex structures, are difficult to implement, and cannot monitor the longitudinal changes of seawater chemical elements. Summary of the invention

[0006] In order to overcome at least one of the defects of the above-mentioned prior art, the present invention provides a seawater thermocline simulation and measurement device, the purpose of which is to generate a seawater thermocline in a laboratory through the simulation device, and use the built-in sampling system to take out seawater samples for the measurement of seawater chemical elements, so as to obtain the longitudinal variation law of seawater chemical elements in the simulated seawater thermocline.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A marine thermocline simulation and measurement device comprises an insulation barrel, a first constant temperature tank, a second constant temperature tank, a first circulating water chiller, a second circulating water chiller, a sampling system and a multi-channel temperature measurement system, wherein the first constant temperature tank is located at the bottom of the insulation barrel, the second constant temperature tank is located at the top of the insulation barrel, the first constant temperature tank is connected to the first circulating water chiller via a first silicone hose, the second constant temperature tank is connected to the second circulating water chiller via a second silicone hose, the first circulating water chiller and the second circulating water chiller are both located outside the insulation barrel, and the insulation barrel is provided with a sampling system and a multi-channel temperature measurement system which are longitudinally parallel to each other.

[0009] The multi-channel temperature measurement system includes a seawater temperature measuring pole, a temperature display and a plurality of temperature sensors. The seawater temperature measuring pole is vertically arranged in the insulation barrel, and its bottom end is connected to the bottom side of the insulation barrel, and the top end is fixedly connected to the fixing plate. A plurality of temperature sensors are evenly fixed on the seawater temperature measuring pole. The position of each temperature sensor is a corresponding temperature measuring point. Each temperature measuring point corresponds to a sampling point at the same horizontal height, and is used to test the temperature at different water depths. Each temperature sensor is connected to the temperature display through a temperature measuring wire.

[0010] The temperature measuring wire is arranged in the hollow of the seawater temperature measuring pole, one end of which is connected to the temperature sensor, and the other end is connected to the wiring terminal at the top of the seawater temperature measuring pole, and the wiring terminal is connected to the temperature display.

[0011] The sampling system comprises a seawater sampling pole, a sampler, a sampling rubber tube and a one-way valve. The seawater sampling pole is a hollow structure and is vertically arranged in an insulation barrel, with its bottom end connected to the bottom side of the insulation barrel and its top end fixedly connected to a fixed plate. A plurality of sampling suction pipe openings are evenly arranged on the seawater sampling pole, and each of the sampling suction pipe openings is connected to the one-way valve through a sampling rubber tube. The sampling rubber tube is passed through the hollow structure of the seawater sampling pole and is connected to the one-way valve at the top of the seawater sampling pole. The positions of each sampling suction pipe opening are respectively respective sampling points, and the one-way valve is connected to the liquid inlet of the sampler.

[0012] The heat-insulating barrel is a double-layer organic glass barrel consisting of an inner first organic glass barrel and an outer second organic glass barrel, and polyurethane heat-insulating foam is filled between the first organic glass barrel and the second organic glass barrel.

[0013] The first thermostatic tank is a double-layer stainless steel barrel filled with insulation foam in the middle. A metal bracket is provided in the first thermostatic tank, and the insulation barrel is placed on the metal bracket in the first thermostatic tank. A support plate is provided at the bottom of the second thermostatic tank, and the support plate is fixed to the upper fixing plate on the top side of the insulation barrel by a screw and a nut. The upper fixing plate is fixed by a support plate and bolts on the outer wall of the insulation barrel.

[0014] The first thermostatic bath is respectively provided with a first circulating water inlet, a first circulating water outlet and a first water inlet, and the first circulating water inlet is connected to the first circulating water chiller through a first silicone hose. The second thermostatic bath is respectively provided with a second circulating water inlet, a second circulating water outlet and a second water inlet, and the second circulating water inlet is connected to the second circulating water chiller through a second silicone hose.

[0015] The first circulating water chiller can control the temperature of water or ethylene glycol in the first thermostatic bath to be stable at a temperature between -10 and 3°C. When the controlled temperature is less than 0°C, ethylene glycol is used as the cooling medium in the first thermostatic bath.

[0016] The second circulating water chiller can control the water temperature in the second thermostatic tank to be stable at a temperature between 10 and 35°C.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: when the present invention simulates and measures the seawater thermocline, seawater is injected into the insulation barrel, and the temperatures of the first thermostatic tank 4 and the second thermostatic tank 5 are controlled to simulate thermoclines of different strengths. The seawater in the insulation barrel can form a change pattern consistent with the seawater thermocline in the real ocean after a certain period of static aging, and at the same time, the longitudinal change of the seawater chemical elements in the thermocline seawater is consistent with the change pattern of the seawater thermocline in the real ocean. The temperature at different water depths in the thermocline can be measured and stored in real time by a multi-channel temperature measurement system, and the sampling system is used to sample the seawater at different depths in the insulation barrel, and the seawater chemical elements are measured by chemical methods to obtain the characteristics of the seawater thermocline, so that the characteristics of the seawater thermocline can be studied more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 3It is a schematic diagram of the three-dimensional structure of the first thermostatic bath of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the second thermostatic bath of the present invention;

[0022] Figure 5 It is a cross-sectional view of the seawater sampling pole of the present invention;

[0023] Figure 6 It is a cross-sectional view of the seawater temperature measuring pole of the present invention.

[0024] In the figure: 1 a first organic glass barrel, 2 polyurethane insulation foam, 3 a second organic glass barrel, 4 a first constant temperature tank, 5 a second constant temperature tank, 6 a lead screw, 7 a support plate, 8 a nut, 9 an upper fixing plate, 10 a support plate, 11 a bolt, 12 a temperature measuring point, 13 a seawater temperature measuring rod, 14 a seawater sampling rod, 15 a sampling point, 16 a first water inlet, 17 a first circulating water inlet, 18 a first circulating water outlet, 19 a second water inlet, 20 a second circulating water outlet, 21 a sampling pipette port, 22 a sampling rubber tube, 23 a one-way valve, 24 a temperature sensor, 25 a temperature measuring wire, 26 a terminal, 27 a first circulating water chiller, 28 a second circulating water chiller, 29 a first silicone hose, 30 a second silicone hose, 31 a metal bracket, and 32 a second circulating water inlet. DETAILED DESCRIPTION

[0025] The drawings are only for illustrative purposes and should not be construed as limiting the present invention. To better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and should not be construed as limiting the present invention.

[0026] like Figure 1 , 2, 3, 4, 5 and 6, a marine thermocline simulation and measurement device comprises an insulation barrel, a first thermostatic bath 4, a second thermostatic bath 5, a first circulating water chiller 27, a second circulating water chiller 28, a sampling system and a multi-channel temperature measurement system, wherein the first thermostatic bath 4 is located at the bottom of the insulation barrel, and the second thermostatic bath 5 is located at the top of the insulation barrel, the first thermostatic bath 4 is connected to the first circulating water chiller 27 through a first silicone hose 29, the first circulating water chiller 27 controls the water temperature in the first thermostatic bath 4, and then controls the temperature of the seawater at the bottom of the simulated thermocline, the second thermostatic bath 5 is connected to the second circulating water chiller 28 through a second silicone hose 30, the second circulating water chiller 28 controls the water temperature in the second thermostatic bath 5, and then controls the temperature of the seawater at the top of the simulated thermocline, the first circulating water chiller 27 and the second circulating water chiller 28 are both located outside the insulation barrel, and the insulation barrel is provided with a sampling system and a multi-channel temperature measurement system which are longitudinally parallel to each other.

[0027] The multi-channel temperature measurement system includes a seawater temperature measuring pole 13, a temperature display and a plurality of temperature sensors 24. The seawater temperature measuring pole 13 is vertically arranged in the insulation barrel, and its bottom end is connected to the bottom side of the insulation barrel, and the top end is fixedly connected to the upper fixed plate 9. A plurality of temperature sensors 24 are evenly fixed on the seawater temperature measuring pole 13. The position of each temperature sensor 24 is a corresponding temperature measuring point 12. Each temperature measuring point 12 corresponds to a sampling point 15 at the same horizontal height, and is used to test the temperature at different water depths. Each temperature sensor 24 is connected to the temperature display through a temperature measuring wire 25.

[0028] The temperature measuring wire 25 is arranged through the hollow of the seawater temperature measuring pole 13, one end of which is connected to the temperature sensor 24, and the other end is connected to the wiring terminal 26 at the top of the seawater temperature measuring pole 13. The wiring terminal 26 is connected to a temperature display, which can synchronously display the temperature of each temperature measuring point 12. If necessary, other types of sensors can be arranged synchronously.

[0029] The sampling system comprises a seawater sampling pole 14, a sampler, a sampling rubber tube 22 and a one-way valve 23. The seawater sampling pole 14 is a hollow structure, which is vertically arranged in the insulation barrel, and its bottom end is connected to the bottom side of the insulation barrel, and the top end is fixedly connected to the upper fixing plate 9. The seawater sampling pole 14 is evenly provided with a plurality of sampling suction pipe openings 21, and each of the sampling suction pipe openings 21 is connected to the one-way valve 23 through a sampling rubber tube 22. The sampling rubber tube 22 is inserted into the seawater sampling pole 14. The hollow structure of the rod 14 is connected to the one-way valve 23 at the top of the seawater sampling pole 14. The positions of the sampling pipette ports 21 are respectively the respective sampling points 15. The sampling points 15 correspond to the temperature measuring points 12 of the multi-channel temperature measuring system one by one and are located at the same horizontal position. The one-way valve 23 is connected to the liquid inlet of the sampler. When sampling, the sampler is used to extract seawater samples at different water depths at the top of the seawater sampling pole 14. The extracted seawater samples can be used to measure the chemical elements of seawater.

[0030] The insulation barrel is a double-layer organic glass barrel consisting of an inner first organic glass barrel 1 and an outer second organic glass barrel 3 , and polyurethane insulation foam 2 is filled between the first organic glass barrel 1 and the second organic glass barrel 3 .

[0031] The first constant temperature tank 4 is a double-layer stainless steel barrel filled with heat-insulating foam in the middle.

[0032] The first thermostatic tank 4 is provided with a metal bracket 31, and the insulation barrel is placed on the metal bracket 31 in the first thermostatic tank 4. A support plate 7 is provided at the bottom of the second thermostatic tank 5. The support plate 7 is fixed to the upper fixing plate 9 on the top side of the insulation barrel through a screw 6 and a nut 8. The upper fixing plate 9 is fixed by a support plate 10 and a bolt 11 on the outer wall of the insulation barrel.

[0033] The first thermostatic bath 4 is respectively provided with a first circulating water inlet 17, a first circulating water outlet 18 and a first water adding port 16. The first circulating water inlet 17 is connected to the first circulating water chiller 27 via a first silicone hose 29. The first circulating water inlet 17 is used to add water into the first thermostatic bath 4, and the first circulating water outlet 18 is used to discharge water from the first thermostatic bath 4.

[0034] The second thermostatic bath 5 is respectively provided with a second circulating water inlet 32, a second circulating water outlet 20 and a second water inlet 19. The second circulating water inlet 32 ​​is connected to the second circulating water chiller 28 through a second silicone hose 30. The second circulating water outlet 20 is used for draining the second thermostatic bath 5. The second water inlet 19 is used for adding water to the interior of the second thermostatic bath 5.

[0035] The first circulating chiller 27 can control the temperature of the water or ethylene glycol in the first thermostatic bath 4 to be stable at a temperature between -10 and 3°C. When the controlled temperature is less than 0°C, ethylene glycol is used as the cooling medium in the first thermostatic bath 4. Since the boiling point of ethylene glycol is 197.4°C and the freezing point is -11.5°C, using ethylene glycol as the low-temperature cooling medium is more conducive to the development of this experiment than ordinary water.

[0036] The second circulating water chiller 28 can control the water temperature in the second thermostatic tank 5 to be stable at a temperature between 10 and 35°C.

[0037] In this embodiment, existing technical means can be used to set an equal number of array electrodes at positions corresponding to the temperature measuring points 12 and the sampling points 15 and located at the same horizontal height, and the seawater chemical element characteristics of the electrodes at different positions of the simulated ocean thermocline are obtained by electrochemical analysis methods, thereby obtaining the longitudinal variation law of the seawater chemical elements in the simulated seawater thermocline.

[0038] In this embodiment, the first circulating water chiller 27 and the second circulating water chiller 28 are both existing technologies or mature existing commercial products, and will not be described in detail here.

[0039] The specific steps of ocean thermocline simulation and measurement are as follows: 1. Inject cooling medium (water or ethylene glycol) into the first thermostatic tank 4 and the second thermostatic tank 5 respectively; 2. Inject an appropriate amount of seawater into the insulation barrel, and the seawater level does not exceed the upper surface of the second thermostatic tank 5; 3. Turn on the first circulating chiller 27 and the second circulating chiller 28 to make the temperature of the liquid in the second thermostatic tank 5 higher than the temperature of the liquid in the first thermostatic tank 4; 4. Let the seawater in the insulation barrel stand for a period of time, the seawater temperature in the insulation barrel will decrease with depth and a seawater thermocline can be formed, and the longitudinal changes of the seawater chemical elements in the thermocline show a change pattern consistent with the real seawater thermocline; 5. After the seawater thermocline is formed, seawater samples at different water depths are regularly extracted through the sampling system to measure the seawater chemical elements, and the temperature of each sampling point 15 is monitored in real time by the multi-channel temperature measurement system.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. For example, the organic glass barrel can also be further designed as an oval barrel or a square barrel, etc., and it is not necessary and impossible to list all the embodiments here. 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 claims of the present invention.

Claims

1. A marine thermocline simulation and measurement device, characterized in that: The invention comprises a heat preservation barrel, a first thermostatic tank (4), a second thermostatic tank (5), a first circulating water chiller (27), a second circulating water chiller (28), a sampling system and a multi-channel temperature measurement system, wherein the first thermostatic tank (4) is located at the bottom of the heat preservation barrel, the second thermostatic tank (5) is located at the top of the heat preservation barrel, the first thermostatic tank (4) is connected to the first circulating water chiller (27) via a first silicone hose (29), the second thermostatic tank (5) is connected to the second circulating water chiller (28) via a second silicone hose (30), the first circulating water chiller (27) and the second circulating water chiller (28) are both located outside the heat preservation barrel, and the heat preservation barrel is provided with a sampling system and a multi-channel temperature measurement system which are longitudinally parallel to each other; The multi-channel temperature measurement system comprises a seawater temperature measurement pole (13), a temperature display and a plurality of temperature sensors (24). The seawater temperature measurement pole (13) is vertically arranged in the heat preservation barrel, with its bottom end connected to the bottom side of the heat preservation barrel and its top end fixedly connected to the upper fixing plate (9). The seawater temperature measurement pole (13) is evenly fixedly arranged with a plurality of temperature sensors (24). The position of each temperature sensor (24) is respectively a corresponding temperature measurement point (12). Each temperature measurement point (12) corresponds to a sampling point (15) at the same horizontal height, and is used to test the temperature at different water depths. Each temperature sensor (24) is connected to the temperature display via a temperature measurement wire (25). The first thermostatic tank (4) is provided with a first circulating water inlet (17), a first circulating water outlet (18) and a first water inlet (16), and the first circulating water inlet (17) is connected to the first circulating water chiller (27) via a first silicone hose (29). The second thermostatic tank (5) is provided with a second circulating water inlet (32), a second circulating water outlet (20) and a second water inlet (19), and the second circulating water inlet (32) is connected to the second circulating water chiller (28) via a second silicone hose (30); The sampling system comprises a seawater sampling pole (14), a sampler, a sampling rubber tube (22) and a one-way valve (23). The seawater sampling pole (14) is a hollow structure and is vertically arranged in a heat-insulating barrel. Its bottom end is connected to the bottom side of the heat-insulating barrel and its top end is fixedly connected to an upper fixing plate (9). The seawater sampling pole (14) is evenly provided with a plurality of sampling pipette openings (21). Each sampling pipette opening (21) is connected to the one-way valve (23) through a sampling rubber tube (22). The sampling rubber tube (22) is inserted into the hollow structure of the seawater sampling pole (14) and is connected to the one-way valve (23) at the top of the seawater sampling pole (14). The positions of each sampling pipette opening (21) are respectively corresponding to respective sampling points (15). The one-way valve (23) is connected to a liquid inlet of the sampler.

2. The ocean thermocline simulation and measurement device according to claim 1, characterized in that: The temperature measuring wire (25) is arranged to penetrate the hollow of the seawater temperature measuring pole (13), one end of which is connected to the temperature sensor (24), and the other end of which is connected to the wiring terminal (26) at the top of the seawater temperature measuring pole (13), and the wiring terminal (26) is connected to a temperature display.

3. The ocean thermocline simulation and measurement device according to claim 1, characterized in that: The heat-insulating barrel is a double-layer organic glass barrel consisting of an inner first organic glass barrel (1) and an outer second organic glass barrel (3), and polyurethane heat-insulating foam (2) is filled between the first organic glass barrel (1) and the second organic glass barrel (3).

4. The ocean thermocline simulation and measurement device according to claim 1, characterized in that: The first thermostatic tank (4) is a double-layer stainless steel barrel filled with heat-insulating foam in the middle. A metal bracket (31) is provided in the first thermostatic tank (4). The heat-insulating barrel is placed on the metal bracket (31) in the first thermostatic tank (4). A support plate (7) is provided at the bottom of the second thermostatic tank (5). The support plate (7) is fixed to an upper fixing plate (9) on the top side of the heat-insulating barrel by means of a lead screw (6) and a nut (8). The upper fixing plate (9) is fixed by means of a support plate (10) and bolts (11) on the outer wall of the heat-insulating barrel.

5. The ocean thermocline simulation and measurement device according to claim 1, characterized in that: The first circulating water chiller (27) can control the temperature of water or ethylene glycol in the first thermostatic bath (4) to be stable at a temperature between -10 and 3°C. When the controlled temperature is less than 0°C, ethylene glycol is used as the cooling medium in the first thermostatic bath (4).

6. The ocean thermocline simulation and measurement device according to claim 1, characterized in that: The second circulating water chiller (28) can control the water temperature in the second thermostatic tank (5) to be stable at a temperature between 10 and 35°C.

Images