Adjustable-temperature CO2 Self-cooling Buffer Tank Device

Abstract

The present invention provides a temperature-adjustable CO2 self-cooling buffer tank device. The self-cooling buffer tank device of the present invention includes a tank body, a liquid carbon dioxide storage tank communicated with the inlet of the tank body, a flow pipe communicated with the outlet of the tank body, a temperature controller for heating the tank body, and a heat dissipation unit connected between the outlet and the inlet of the tank body; the heat dissipation unit is used to reduce the temperature of carbon dioxide in the tank body. The present invention heats and pressurizes the tank body through the temperature controller, and quickly cools the tank body and carbon dioxide through the heat dissipation unit, thereby providing a buffer tank with adjustable temperature and capable of quickly cooling down.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide buffer tanks, and particularly relates to an adjustable-temperature CO2 self-cooling buffer tank device. Background Art

[0002] In a high-pressure system, a buffer tank is the most common buffering device. The buffer tank can buffer the pressure fluctuations of the system and make the system medium more stable. Generally speaking, a high-pressure system requires a pressure booster pump to boost the pressure of the medium. However, since the market price of the high-pressure pump is relatively expensive, the cost of the entire system will be increased, and the maintenance cost and energy consumption of the high-pressure pump are relatively high.

[0003] For a high-pressure system using carbon dioxide, the carbon dioxide in the high-pressure system can be heated by utilizing the property of the carbon dioxide to increase pressure under high temperature, so as to increase the pressure of the carbon dioxide. The achieved high-pressure effect is not lower than that of a high-pressure pump. However, after heating and boosting the pressure of the carbon dioxide for a period of time, it is necessary to rapidly cool down the carbon dioxide in the system, otherwise the system cannot be continuously used, and the cooling effect of the existing high-pressure system of carbon dioxide is not ideal. Summary of the Invention

[0004] In view of this, the present invention aims to provide an adjustable-temperature CO2 self-cooling buffer tank device to provide a self-cooling buffer tank that can adjust its own temperature and rapidly cool down.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] An adjustable-temperature CO2 self-cooling buffer tank device includes a tank body, a liquid carbon dioxide storage tank communicated with the inlet of the tank body, a circulation pipe communicated with the outlet of the tank body, a thermostat for heating the tank body, and a heat dissipation unit connected between the outlet and the inlet of the tank body;

[0007] The heat dissipation unit is used to reduce the temperature of the carbon dioxide in the tank body.

[0008] Further, the heat dissipation unit includes an outer jacket wrapped around the outer wall of the tank body, a cooling inlet pipe communicated between the outlet of the tank body and the inlet of the outer jacket, and a cooling outlet pipe communicated between the inlet of the tank body and the discharge outlet of the outer jacket;

[0009] A cooler is provided on the cooling outlet pipe, a fourth valve is installed between the discharge outlet of the outer jacket and the cooler, and a second valve is provided on the cooling inlet pipe.

[0010] Further, spiral fins are spirally arranged on the outer wall of the tank body.

[0011] Further, along the direction from the cooler to the inlet of the tank body, a second pressure gauge, a sixth valve, a check valve, a low-pressure carbon dioxide storage tank, and a seventh valve are sequentially arranged on the cooling outlet pipe. A fifth pressure gauge is arranged at the low-pressure carbon dioxide storage tank, and the measuring end of the fifth pressure gauge is arranged inside the low-pressure carbon dioxide storage tank.

[0012] Further, a first drain pipe is connected between the fourth valve and the cooler, and a fifth valve is arranged on the first drain pipe.

[0013] Further, the inlet and outlet of the outer jacket are respectively arranged at both ends of the tank body.

[0014] Further, a third valve is arranged at the inlet of the tank body, a first valve is arranged at the outlet of the tank body, an eighth valve is arranged at the outlet of the liquid carbon dioxide storage tank, a fourth pressure gauge is arranged at the liquid carbon dioxide storage tank, the measuring end of the fourth pressure gauge is arranged inside the liquid carbon dioxide storage tank, a third pressure gauge is arranged at the inlet of the tank body, and a first pressure gauge is arranged at the outlet of the tank body.

[0015] Further, a pipeline jacket is sleeved on the flow pipe. A second drain pipe is opened at one end of the pipeline jacket, and a pipeline cooling pipe is connected between the other end and the outlet of the tank body. A ninth valve is installed on the pipeline cooling pipe.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The present invention heats the tank body through a thermostat to make the carbon dioxide in the tank body reach a suitable pressure, and can use the heat dissipation unit to quickly cool the tank body, and then use the thermostat to heat the tank body again to make the carbon dioxide in the tank body reach a suitable pressure again, so that the whole system can be continuously used.

[0018] Among them, the cooling inlet pipe in the heat dissipation unit is communicated with the inlet of the outer jacket. After the second valve is opened, the pressure at the tank outlet is instantaneously relieved and enters the space between the outer jacket and the outer wall of the tank through the cooling inlet pipe. According to the thermodynamic principle, the carbon dioxide entering the space between the outer jacket and the outer wall of the tank decompresses and expands, absorbing a large amount of heat from the outer wall of the tank, generating a mixed jet of high-pressure dry ice and carbon dioxide gas. And under the disturbance of the spiral fins, the cooling heat transfer is strengthened, enabling the tank in a high-temperature state to be quickly cooled. And after the fourth valve is opened, the carbon dioxide entering the space between the outer jacket and the tank can enter the cooling outlet pipe through the outlet of the outer jacket, and then the carbon dioxide is quickly cooled by the cooler and enters the low-pressure carbon dioxide storage tank by opening the sixth valve for storage. After the pressure in the system returns to normal, opening the seventh valve can refill the carbon dioxide in the low-pressure carbon dioxide storage tank into the tank. Through the two cooling methods, the tank can be quickly cooled and the carbon dioxide gas can be cooled, realizing the rapid cooling of the system, and improving the sustainability of the system use.

[0019] Furthermore, the temperature in the tank is relatively high. Affected by the temperature, when the carbon dioxide gas ejected from the tank outlet enters the flow pipe, part of the carbon dioxide will vaporize. Therefore, a pipeline jacket is provided. Similarly, according to the thermodynamic principle, after the ninth valve is opened, the pressure is instantaneously relieved, and the carbon dioxide enters the pipeline jacket through the pipeline cooling pipe, which can quickly cool the flow pipe, keeping the carbon dioxide flowing to the next process in a liquid state for normal use in the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention. The front-back, up-down and other orientation terms involved herein are only used to represent relative positional relationships and do not constitute any improper limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Description of the reference numerals:

[0023] 1. Tank body; 2. Liquid carbon dioxide storage tank; 3. Circulation pipe; 4. Temperature controller; 5. Outer jacket; 6. Inlet; 7. Cooling inlet pipe; 8. Outlet; 9. Cooling outlet pipe; 10. Cooler; 11. Fourth valve; 12. Second valve; 13. Spiral fin; 14. Second pressure device; 15. Sixth valve; 16. Check valve; 17. Low-pressure carbon dioxide storage tank; 18. Seventh valve; 19. Fifth pressure device; 20. First drain pipe; 21. Fifth valve; 22. Third valve; 23. First valve; 24. Eighth valve; 25. Fourth pressure device; 26. Third pressure device; 27. First pressure device; 28. Pipeline jacket; 29. Second drain pipe; 30. Pipeline cooling pipe; 31. Ninth valve. Detailed implementation mode

[0024] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0025] In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", "connection parts" should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific situations.

[0027] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0028] This embodiment relates to a temperature-adjustable CO2 self-cooling buffer tank device, and provides a self-cooling buffer tank that can adjust the temperature and rapidly cool down; an exemplary structure thereof is as Figure 1 shown.

[0029] Generally speaking, the temperature-adjustable CO2 self-cooling buffer tank device includes a tank body 1, a liquid carbon dioxide storage tank 2 communicated with the inlet of the tank body 1, a circulation pipe 3 communicated with the outlet of the tank body 1, a temperature controller 4 for heating the tank body 1, and a heat dissipation unit connected between the outlet and the inlet of the tank body 1;

[0030] The heat dissipation unit is used to lower the temperature of carbon dioxide in the tank body 1.

[0031] The liquid carbon dioxide in the liquid carbon dioxide storage tank 2 enters the tank body 1 through the inlet of the tank body 1, and then the tank body 1 is heated by the thermostat 4 to increase the pressure of the carbon dioxide in the tank body 1, so that the liquid carbon dioxide in the tank body 1 can flow into the pipeline of the next process through the flow pipe 3. After heating the tank body 1 with the thermostat 4 for a period of time, when the carbon dioxide in the tank body 1 needs to be replenished, since the temperature of the tank body 1 is relatively high, the liquid carbon dioxide in the liquid carbon dioxide storage tank 2 cannot be replenished into the tank body 1, so it is necessary to quickly cool the tank body 1 through the heat dissipation unit.

[0032] Specifically, the heat dissipation unit includes an outer jacket 5 wrapped around the outer wall of the tank body 1, a cooling inlet pipe 7 connected between the outlet of the tank body 1 and the inlet 6 of the outer jacket 5, and a cooling outlet pipe 9 connected between the inlet of the tank body 1 and the outlet 8 of the outer jacket 5;

[0033] A cooler 10 is provided on the cooling outlet pipe 9, a fourth valve 11 is installed between the outlet 8 of the outer jacket 5 and the cooler 10, and a second valve 12 is provided on the cooling inlet pipe 7.

[0034] By opening the second valve 12, the carbon dioxide at the outlet of the tank body 1 can be quickly depressurized and enter between the outer jacket 5 and the outer wall of the tank body 1 through the cooling inlet pipe 7. According to the thermodynamic principle, the carbon dioxide entering between the outer jacket 5 and the outer wall of the tank body 1 will decompress and expand to absorb a large amount of heat from the outer wall of the tank body 1, generating a mixed jet of high-pressure dry ice and carbon dioxide gas, so that the tank body 1 in a high-temperature state can be quickly cooled. And after opening the fourth valve 11, the carbon dioxide entering between the outer jacket 5 and the tank body 1 can enter the cooling outlet pipe 9 through the outlet 8 of the outer jacket 5, and then the carbon dioxide is quickly cooled by the cooler 10. The carbon dioxide cooled by the cooler 10 will enter the tank body 1 through the inlet of the tank body 1.

[0035] In order to enhance the heat dissipation effect on the tank body 1, spiral fins 13 are spirally arranged on the outer wall of the tank body 1, and the inlet 6 and the outlet 8 of the outer jacket 5 are respectively arranged at both ends of the tank body 1.

[0036] Under the disturbance of the spiral fins 13, the mixed jet entering between the outer jacket 5 and the outer wall of the tank body 1 strengthens the cooling heat transfer. Placing the inlet 6 and the outlet 8 of the outer jacket 5 at both ends of the tank body 1 can increase the contact area between the mixed jet and the outer wall of the tank body 1, and maximize the cooling effect and cooling speed on the tank body 1.

[0037] Moreover, along the direction from the cooler 10 to the inlet of the tank 1, a second pressure gauge 14, a sixth valve 15, a check valve 16, a low-pressure carbon dioxide storage tank 17, and a seventh valve 18 are sequentially arranged on the cooling outlet pipe 9. A fifth pressure gauge 19 is provided at the low-pressure carbon dioxide storage tank 17, and the measuring end of the fifth pressure gauge 19 is arranged inside the low-pressure carbon dioxide storage tank 17.

[0038] After the sixth valve 15 is opened, the carbon dioxide cooled by the cooler 10 will enter the low-pressure carbon dioxide storage tank 17. By opening the seventh valve 18, the carbon dioxide in the low-pressure carbon dioxide storage tank 17 can be filled into the tank 1 through the inlet of the tank 1, realizing the recycling of carbon dioxide.

[0039] Meanwhile, a first drain pipe 20 is connected between the fourth valve 11 and the cooler 10, and a fifth valve 21 is arranged on the first drain pipe 20.

[0040] By observing the readings of the second pressure gauge 14 and the fifth pressure gauge 19, when the readings of the two are similar, the fifth valve 21 can be opened to discharge part of the carbon dioxide through the first drain pipe 20.

[0041] A third valve 22 is arranged at the inlet of the tank 1, a first valve 23 is arranged at the outlet of the tank 1, an eighth valve 24 is arranged at the outlet of the liquid carbon dioxide storage tank 2, a fourth pressure gauge 25 is provided at the liquid carbon dioxide storage tank 2, the measuring end of the fourth pressure gauge 25 is arranged inside the liquid carbon dioxide storage tank 2, a third pressure gauge 26 is arranged at the inlet of the tank 1, and a first pressure gauge 27 is arranged at the outlet of the tank 1.

[0042] The third valve 22 is used to control the entry of carbon dioxide into the tank 1, the second valve 12 is used to control the flow of carbon dioxide into the pipeline of the next process, the eighth valve 24 is used to control the outflow of carbon dioxide in the liquid carbon dioxide storage tank 2. By observing the third pressure gauge 26 and the fourth pressure gauge 25, it can be ensured that the carbon dioxide in the liquid carbon dioxide storage tank 2 smoothly enters the tank 1, and the first pressure gauge 27 is used to observe the pressure at the outlet of the tank 1.

[0043] Since the carbon dioxide in the circulation pipe 3 is in a high-temperature state, part of the carbon dioxide entering the circulation pipe 3 will be in a gaseous state. Therefore, a pipeline jacket 28 is sleeved on the circulation pipe 3. One end of the pipeline jacket 28 is provided with a second drain pipe 29, and the other end is connected to the outlet of the tank 1 through a pipeline cooling pipe 30. A ninth valve 31 is installed on the pipeline cooling pipe 30.

[0044] By opening the ninth valve 31, the carbon dioxide at the outlet of the tank body 1 passes through the pipeline cooling pipe 30 and enters the pipeline jacket 28. Similarly, according to the principle of thermodynamics, the carbon dioxide entering the pipeline jacket 28 instantaneously decompresses to form a mixed jet, which can cool the cooling pipeline, so that the carbon dioxide entering the cooling pipeline is in a liquid state for use in the next process. The mixed jet entering the pipeline jacket 28 can be discharged through the second exhaust pipe 29.

[0045] In summary, the working process of the temperature-adjustable CO2 self-cooling buffer tank device is as follows:

[0046] First, observe the third pressure gauge 26 and the fourth pressure gauge 25. When the readings of the two are similar, open the eighth valve 24, so that the liquid carbon dioxide in the liquid carbon dioxide storage tank 2 flows into the tank body 1 through the pipeline, and then heat the tank body 1 through the temperature controller 4 to make the carbon dioxide in the tank body 1 have a certain pressure, and then open the first valve 23, so that the carbon dioxide in the tank body 1 enters the next process through the circulation pipe 3.

[0047] When the carbon dioxide in the tank body 1 is too little and needs to be replenished, the tank body 1 needs to be cooled by the heat dissipation unit. The second valve 12 and the fourth valve 11 can be opened, so that the carbon dioxide at the outlet of the tank body 1 is sprayed into the space between the outer jacket 5 and the outer wall of the tank body 1 through the cooling inlet pipe 7. According to the principle of thermodynamics, the carbon dioxide entering the space between the outer jacket 5 and the outer wall of the tank body 1 will absorb the heat of the tank body 1 to form a mixed jet, and under the action of the spiral fins 13, the cooling effect on the tank body 1 is enhanced. After the mixed jet enters through the inlet 6 of the outer jacket 5 and comes into a large amount of contact with the outer wall of the tank body 1, it enters the cooling outlet pipe 9 through the outlet 8 of the outer jacket 5. The fifth valve 21 can be opened and discharged through the first exhaust pipe 20, or cooled by the cooler 10. After the sixth valve 15 is opened, the cooled carbon dioxide will enter the low-pressure carbon dioxide storage tank 17 for collection. After the cooling of the tank body 1 is completed, the seventh valve 18 is opened, and the carbon dioxide in the low-pressure carbon dioxide storage tank 17 is filled into the tank body 1 to realize the recycling of carbon dioxide.

[0048] The ninth valve 31 can be opened to make the carbon dioxide in the tank body 1 enter the pipeline jacket 28 through the pipeline cooling pipe 30. According to the principle of thermodynamics, the circulation pipe 3 is cooled by instantaneous pressure relief, and the carbon dioxide entering the pipeline jacket 28 is discharged through the second exhaust pipe 29.

[0049] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable-temperature CO2 self-cooling buffer tank device, characterized in that: It includes a tank body (1), a liquid carbon dioxide storage tank (2) communicated with the inlet of the tank body (1), a circulation pipe (3) communicated with the outlet of the tank body (1), a thermostat (4) for heating the tank body (1), and a heat dissipation unit connected between the outlet and the inlet of the tank body (1); The heat dissipation unit is used to reduce the temperature of carbon dioxide in the tank body (1); The heat dissipation unit includes an outer jacket (5) wrapped around the outer wall of the tank body (1), a cooling inlet pipe (7) communicated between the outlet of the tank body (1) and the inlet (6) of the outer jacket (5), and a cooling outlet pipe (9) communicated between the inlet of the tank body (1) and the outlet (8) of the outer jacket (5); A cooler (10) is arranged on the cooling outlet pipe (9), a fourth valve (11) is installed between the outlet (8) of the outer jacket (5) and the cooler (10), and a second valve (12) is arranged on the cooling inlet pipe (7).

2. The adjustable-temperature CO2 self-cooling buffer tank device according to claim 1, wherein: Spiral fins (13) are spirally arranged on the outer wall of the tank body (1).

3. The adjustable-temperature CO2 self-cooling buffer tank device according to claim 1, characterized in that: Along the direction from the cooler (10) to the inlet of the tank body (1), a second pressure gauge (14), a sixth valve (15), a one-way valve (16), a low-pressure carbon dioxide storage tank (17) and a seventh valve (18) are sequentially arranged on the cooling outlet pipe (9). A fifth pressure gauge (19) is arranged at the low-pressure carbon dioxide storage tank (17), and the measuring end of the fifth pressure gauge (19) is arranged inside the low-pressure carbon dioxide storage tank (17).

4. The adjustable-temperature CO2 self-cooling buffer tank device according to claim 3, wherein: A first exhaust pipe (20) is communicated between the fourth valve (11) and the cooler (10), and a fifth valve (21) is arranged on the first exhaust pipe (20).

5. The temperature-adjustable CO2 self-cooling buffer tank device according to claim 1, characterized in that: The inlet (6) and the outlet (8) of the outer jacket (5) are respectively arranged at both ends of the tank body (1).

6. The adjustable-temperature CO2 self-cooling buffer tank device according to claim 1, characterized in that: A third valve (22) is arranged at the inlet of the tank body (1), a first valve (23) is arranged at the outlet of the tank body (1), an eighth valve (24) is arranged at the outlet of the liquid carbon dioxide storage tank (2), a fourth pressure gauge (25) is arranged at the liquid carbon dioxide storage tank (2), the measuring end of the fourth pressure gauge (25) is arranged inside the liquid carbon dioxide storage tank (2), a third pressure gauge (26) is arranged at the inlet of the tank body (1), and a first pressure gauge (27) is arranged at the outlet of the tank body (1).

7. The adjustable-temperature CO2 self-cooling buffer tank device according to claim 1, characterized in that: A pipeline jacket (28) is sleeved on the circulation pipe (3). One end of the pipeline jacket (28) is provided with a second exhaust pipe (29), and a pipeline cooling pipe (30) is communicated between the other end and the outlet of the tank body (1). A ninth valve (31) is installed on the pipeline cooling pipe (30).

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