Supercharged liquid carbon dioxide storage and dispensing apparatus and method of controlling the same

Abstract

The application provides a mechanical supercharged liquid carbon dioxide storage and discharge device and a control method thereof. The device comprises an adjustable tank body, a liquid guide component and a controller. The adjustable tank body comprises two axially opposite end walls, a side wall connected between the two end walls and an adjusting plate located between the two end walls and in sliding connection with the side wall. The adjusting plate divides the inside of the adjustable tank body into a first cavity and a second cavity which are adjustable relative to each other. The first cavity is used for storing liquid carbon dioxide. The mechanical supercharged liquid carbon dioxide storage and discharge device of the application realizes efficient storage and smooth discharge of liquid carbon dioxide through the cooperative work of the adjustable tank body, the liquid guide component and the controller. The device has simple structure, convenient operation, high safety and wide application prospect.

Description

Technical Field

[0001] This application relates to the field of liquid substance storage technology, and in particular to a mechanically pressurized liquid carbon dioxide storage and emission device and its control method. Background Technology

[0002] Carbon dioxide exhibits excellent chemical stability, high heat transfer efficiency, low flow resistance, low viscosity, and superior thermodynamic properties. Throttling and depressurizing high-pressure carbon dioxide can achieve a temperature drop of tens of degrees Celsius, a phenomenon known as the Joule-Thomson effect. This high-pressure carbon dioxide throttling and depressurization process can provide a low-temperature cold source for equipment cooling. This technology is more compact and simpler than traditional refrigeration equipment, eliminating the need for transmission machinery, ensuring smooth operation, low noise, and a simple structure.

[0003] Carbon dioxide storage tanks are containers that provide high-pressure carbon dioxide. They are usually placed vertically with the opening facing downwards to facilitate the outflow of liquid carbon dioxide. However, in some special cases, due to space constraints, the storage tanks can only be placed horizontally, making it difficult for the carbon dioxide inside to flow out completely. Summary of the Invention

[0004] This application provides a mechanically pressurized liquid carbon dioxide storage and emission device and its control method, which can promote venting.

[0005] In a first aspect, embodiments of this application provide a mechanically pressurized liquid carbon dioxide storage and discharge device, comprising: an adjustable tank, the adjustable tank including two end walls opposite each other along its own axial direction, a side wall connected between the two end walls, and an adjusting plate located between the two end walls and slidably connected to the side wall, the adjusting plate dividing the interior of the adjustable tank into a relatively adjustable first cavity and a second cavity, the first cavity being used to store liquid carbon dioxide; a liquid guiding component, penetrating the end wall of the adjustable tank and extending at least a predetermined distance along the axial direction within the first cavity; and a controller, communicatively connected to the adjusting plate, the controller being able to control the adjusting plate to slide and perform pressurization operation according to the pressure value inside the first cavity.

[0006] According to an embodiment of the first aspect of this application, a telescopic mechanism is provided in the second cavity. The telescopic mechanism is connected to the adjustment plate and communicates with the controller to receive instructions from the controller to drive the adjustment plate to slide.

[0007] According to an embodiment of the first aspect of this application, at least one axially extending guide rail is provided on the inner side of the sidewall, and a locking block adapted to the guide rail is installed on the edge of the adjusting plate, and the locking block engages with the guide rail.

[0008] According to an embodiment of the first aspect of this application, a limiting part is provided at one end of the guide slide rail near the liquid guiding component, so that the adjusting plate slides along the guide slide rail within a limited area, and the limiting part maintains a preset distance from the liquid guiding component in the plane of the radial direction of the tank.

[0009] According to an embodiment of the first aspect of this application, the roughness of the guide rail gradually increases in the direction from the second cavity to the first cavity.

[0010] According to an embodiment of the first aspect of this application, the adjusting plate has a turbulence protrusion on its surface facing at least the first cavity. The turbulence protrusion can act on the liquid carbon dioxide in the first cavity during the sliding of the liquid guiding component of the adjusting plate to equalize the pressure inside the first cavity.

[0011] According to an embodiment of the first aspect of this application, a turbulence suppression structure is provided on the sidewall of the first cavity. The turbulence suppression structure includes a plurality of spaced protrusions, which can prevent liquid carbon dioxide from forming turbulence at the bottom of the first cavity to stabilize the liquid level.

[0012] According to an embodiment of the first aspect of this application, the liquid guiding component includes a telescopic section located in a first cavity. The telescopic section can automatically adjust its length according to the liquid level change of liquid carbon dioxide in the first cavity to maintain a preset distance between the liquid inlet of the liquid guiding component and the liquid level surface.

[0013] Secondly, embodiments of this application provide a control method for the mechanically pressurized carbon dioxide storage and emission device described in the claims, comprising: obtaining a pressure value inside a first cavity when an adjustable storage tank discharges liquid carbon dioxide; and controlling an adjusting plate to slide towards the end wall of a liquid guiding component extending into the first cavity to increase the pressure inside the first cavity when the pressure value is a first value, wherein the first value is equal to or lower than a preset threshold value.

[0014] According to an embodiment of the second aspect of this application, an adjustable storage tank discharges liquid carbon dioxide at a first valve opening degree, where the first opening degree is the maximum opening degree. A first time node t1 is obtained to mark the start of the discharge of liquid carbon dioxide from the adjustable storage tank. When the pressure value is a first value, the adjusting plate slides towards the end wall of the liquid guiding component extending into the first cavity to increase the pressure in the first cavity. A second time node t2 is obtained to mark the discharge of liquid carbon dioxide from the adjustable storage tank. When the time difference between the second time node t2 and the first time node t1 satisfies a first duration T1, the discharge of liquid carbon dioxide from the adjustable storage tank and the sliding of the adjusting plate are stopped.

[0015] According to an embodiment of the second aspect of this application, an adjustable storage tank discharges liquid carbon dioxide at a second opening of a first valve, the second opening being 40% to 60% of the maximum opening; the discharge duration Tx of the adjustable storage tank discharging liquid carbon dioxide is obtained, and the opening of the first valve is increased as the discharge duration Tx increases; when the pressure value is a first value, the regulating plate is controlled to slide towards the end wall of the liquid guiding component extending into the first cavity to increase the pressure in the first cavity; when the discharge duration Tx meets the first duration T1, the discharge of liquid carbon dioxide from the adjustable storage tank and the sliding of the regulating plate are stopped.

[0016] The mechanically pressurized liquid carbon dioxide storage and emission device of this application achieves efficient storage and precise emission of liquid carbon dioxide through the coordinated operation of the adjustable tank, liquid guiding components and controller. It has a simple structure, is easy to operate and has high safety, and has broad application prospects. Attached Figure Description

[0017] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0018] Figure 1 This is a schematic diagram of the structure of the mechanically pressurized liquid carbon dioxide storage and emission device in a non-operating state provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the mechanically pressurized liquid carbon dioxide storage and emission device in the working state of the liquid provided in the embodiments of this application;

[0020] Figure 3 This is a schematic diagram of the structure of the adjustment plate provided in the embodiment of this application;

[0021] Figure 4 This is a schematic diagram of the control method for the mechanically pressurized liquid carbon dioxide storage and emission device provided in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 100. Adjustable tank body; 110. End wall; 111. First end wall; Second end wall; 120. Side wall; 131. First cavity; 132. Second cavity; 140. Adjusting plate; 141. Turbidity protrusion; 150. Telescopic mechanism; 160. Locking device;

[0024] 200, Liquid guiding component; 210, Outlet; 220, First tubing section; 230, Second tubing section; 240, Suction port;

[0025] 300. Controller; 301. Pressure sensing component; 302. Solenoid valve; 303. Flow regulating valve.

[0026] X, horizontal direction; Y, vertical direction; S1, liquid level. Detailed Implementation

[0027] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples. In the accompanying drawings and the following description, at least some well-known structures and techniques are not shown to avoid unnecessarily obscuring the application; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0028] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] The storage and emission of liquid carbon dioxide is a key technology in many industrial production processes and environmental protection fields. Existing liquid carbon dioxide storage and emission devices have some problems in practical use. For example, due to space constraints, the storage tanks can only be placed horizontally, making it difficult for the liquid carbon dioxide inside to flow out completely. Furthermore, when the liquid carbon dioxide content in the tank is low, its pressure drops, leading to a decrease in the outflow rate of carbon dioxide.

[0031] In view of the above problems, this application provides a mechanically pressurized liquid carbon dioxide storage and emission device and its control method, which can improve the storage and emission efficiency of carbon dioxide.

[0032] Please see Figure 1 and Figure 2In a first aspect, embodiments of this application provide a mechanically pressurized liquid carbon dioxide storage and discharge device, comprising: an adjustable tank 100, a liquid guiding component 200, and a controller 300. The adjustable tank 100 includes two axially opposed end walls 110, a side wall 120 connected between the two end walls 110, and an adjusting plate 140 located between the two end walls 110 and slidably connected to the side wall 120. The adjusting plate 140 divides the interior of the adjustable tank 100 into a relatively adjustable first cavity 131 and a second cavity 132. The first cavity 131 is used to store liquid carbon dioxide. The liquid guiding component 200 penetrates the end wall 110 of the adjustable tank 100 and extends axially within the first cavity 131 by at least a predetermined distance. The controller 300 is communicatively connected to the adjusting plate 140, and the controller 300 can control the adjusting plate 140 to slide and perform pressurization operations according to the pressure value inside the first cavity 131.

[0033] Mechanically pressurized liquid carbon dioxide storage and emission devices can be used to store liquid carbon dioxide and serve as a highly efficient cryogenic cold source, providing cooling for processes or equipment requiring low-temperature environments. For example, in the aerospace field, some aero-engine tests and space environment simulations require extremely low temperature environments. Liquid carbon dioxide storage and emission devices can provide cryogenic cooling, simulating the low-temperature environment of space, for testing the performance of aerospace materials and components under cryogenic conditions, ensuring their reliability and safety in actual flight and space missions.

[0034] The mechanically pressurized liquid carbon dioxide storage and emission device includes an adjustable tank 100, a liquid guiding component 200, and a controller 300. The adjustable tank 100 is the core storage component of the entire device, while the liquid guiding component 200 and the controller 300 are used to achieve smooth emission of liquid carbon dioxide.

[0035] The adjustable tank 100 includes two end walls 110, a side wall 120, and an adjusting plate 140. The two end walls 110 are arranged opposite each other along their own axial direction, and the side wall 120 is connected between the two end walls 110. The two end walls 110 and the side wall 120 enclose the internal space of the tank. The adjusting plate 140 is located between the two end walls 110. The adjusting plate 140 is opposite to the two end walls 110 along the axial direction, and the adjusting plate 140 is slidably connected to the side wall 120. The adjusting plate 140 divides the internal space of the tank into a first cavity 131 and a second cavity 132 arranged along the axial direction. The first cavity 131 is used to store liquid carbon dioxide, and the second cavity 132 serves as an adjusting space for adjusting the pressure of the first cavity 131.

[0036] Specifically, the regulating plate 140 slides between the two end walls 110 to adjust the size of the first cavity 131 and the second cavity 132, thereby changing the pressure inside the first cavity 131. For example, during the emission of liquid carbon dioxide, as the regulating plate 140 slides toward the end wall 110 closer to the first cavity 131, the space of the first cavity 131 gradually decreases, while the space of the second cavity 132 gradually increases. Since gaseous carbon dioxide has a certain degree of compressibility, when the space decreases, the distance between molecules is compressed, and the number of molecules per unit volume increases, thereby increasing the pressure inside the first cavity 131. This process is similar to squeezing gas or liquid in a sealed container; as the space decreases, the pressure naturally increases. By compressing the space of the first cavity 131, the regulating plate 140 increases the pressure of the first cavity 131, thus ensuring the stability of liquid carbon dioxide emission. The precise sliding adjustment of the regulating plate 140 ensures that the pressure of the first cavity 131 remains controllable, guaranteeing the stable storage and emission of liquid carbon dioxide. During the filling of liquid carbon dioxide, as the adjusting plate 140 slides toward the end wall 110 near the second cavity 131, the space of the second cavity 132 gradually decreases and the space of the first cavity 131 gradually increases.

[0037] For example, the plane where the adjustment plate 140 is located can be set perpendicular to the axis or at a certain angle to the axis.

[0038] When the plane of the adjusting plate 140 is perpendicular to the axial direction, it can uniformly apply pressure to the liquid carbon dioxide within the first cavity 131 during adjustment. Due to its vertical planar structure, the pressure applied to the liquid carbon dioxide by the various parts of the adjusting plate 140 in contact with the liquid carbon dioxide is consistent when sliding towards compressing the first cavity 131. Unlike tilted or other non-perpendicular states, which may lead to excessively rapid or uneven local pressure changes, when the plane of the adjusting plate 140 is perpendicular to the axial direction, it ensures a uniform increase in pressure throughout the first cavity 131, avoiding adverse effects on the physical properties of the liquid carbon dioxide due to uneven pressure, and ensuring the accuracy and stability of pressure regulation.

[0039] The fact that the plane of the adjusting plate 140 is perpendicular to the axial direction allows for a more balanced stress distribution across the entire adjustable tank 100. During the sliding pressurization process of the adjusting plate 140, the pressure distribution on the two end walls 110 and side walls 120 of the tank is uniform, reducing the risk of localized stress concentration. This helps extend the service life of the adjustable tank 100, reduces safety hazards such as tank rupture and deformation caused by stress concentration, and improves the overall reliability and safety of the device, enabling it to operate stably under various working conditions.

[0040] Furthermore, the vertical adjusting plate 140 plane facilitates the sealing design and maintenance of the side wall 120 of the adjustable tank 100. Regarding the seal, the relatively regular contact between the vertical plane and the side wall 120 facilitates the installation of sealing materials, resulting in a good seal and effectively preventing liquid carbon dioxide leakage. During maintenance, the regularity of the structure makes checking the sealing condition and replacing sealing components easier, reducing maintenance costs and difficulty, and improving the maintainability of the device.

[0041] For example, the plane where the adjustment plate 140 is located can be parallel to the plane where the end wall 110 is located, or it can be set at a certain angle to the plane where the end wall 110 is located.

[0042] It is understandable that a sealing element is provided between the adjusting plate 140 and the side wall 120 to ensure the airtightness between the first cavity 131 and the second cavity 132.

[0043] The liquid guiding component 200 is a key component for the smooth discharge of liquid carbon dioxide. It penetrates the end wall 110 of the tank and extends at least a predetermined distance along the axial direction of the adjustable tank 100. The liquid guiding component 200 can serve as an outlet pipe for discharging the liquid carbon dioxide medium from the adjustable tank 100. The liquid guiding component 200 can also be reused as an inlet pipe for filling the tank with carbon dioxide working medium. The liquid carbon dioxide storage and discharge device may also be additionally equipped with an inlet pipe for filling with carbon dioxide medium; this application is not limited to this.

[0044] The number of liquid guiding components 200 is not limited in the embodiments of this application; there may be one or more liquid guiding components 200.

[0045] In some cases, the flow rate of a single liquid guiding component 200 is limited. When a large amount of carbon dioxide needs to be output, multiple liquid guiding components 200 can work simultaneously to significantly increase the total output flow rate, thereby meeting the demand for rapid and large-scale supply of carbon dioxide in special scenarios.

[0046] In some cases, a liquid guiding component 200 can only provide cooling to one target location. When multiple liquid guiding components 200 are provided, each liquid guiding component 200 can correspond to a target location, thus providing cooling to multiple target locations.

[0047] In this embodiment of the application, the adjustable tank 100 can be set along the vertical direction Y.

[0048] In some embodiments, the adjustable tank 100 is arranged along the horizontal direction X, that is, the adjustable tank 100 is placed in a horizontal position. When the vertical height Y is limited, the horizontal position can be arranged more flexibly according to the shape of the site and the layout of other equipment, which can better adapt to different site conditions and improve space utilization.

[0049] The liquid guiding component 200 penetrates the end wall 110 of the tank and works in conjunction with the tank, which is placed horizontally or at an angle. It is also suitable for situations where the vertical Y-axis height is limited, facilitating connection with pipelines of other external equipment and making the overall system layout more rational and compact. The liquid guiding component 200 located on the end wall 110 can be set at different heights as needed to achieve stratified output and meet the carbon dioxide quality requirements of different processes.

[0050] When carbon dioxide is discharged from the end wall 110, the pressure change inside the tank is relatively stable. Compared with discharge from the bottom or top, discharge from the end wall 110 allows the gas or liquid inside the tank to flow more evenly during the outflow process, avoiding local pressure changes, which helps maintain the pressure balance inside the storage tank and ensures the stability and safety of the discharge process.

[0051] Meanwhile, the relatively flexible position of the end wall 110 facilitates the installation of various flow control devices and monitoring instruments. Flow meters, regulating valves, and other equipment can be more easily installed on the liquid guiding component 200 to precisely control the output flow of carbon dioxide to meet the needs of different production processes. In addition, it avoids interference with the equipment at the top, ensuring the normal operation of all components and also facilitating the rational utilization of the space at the top of the storage tank.

[0052] The liquid guiding component 200 extends at least a predetermined distance along the axial direction. The liquid guiding component 200 can draw carbon dioxide working fluid from a specific position at a certain distance from the end wall 110, ensuring that the liquid level S1 in the tank remains below the liquid level S1 when the position changes with the application scenario. For example, when the tilt angle of the tank increases with the state of the equipment carrying it, and the liquid carbon dioxide working fluid accumulates towards one side of the end wall 110, the liquid guiding component 200 can still discharge the liquid carbon dioxide working fluid.

[0053] For example, the two end walls 110 include a first end wall 111 and a second end wall 112 arranged opposite each other along the axial direction. The first end wall 111 is adjacent to the first cavity 131, and the second end wall 112 is adjacent to the second cavity 132. The liquid guiding component 200 is disposed through the first end wall 111 of the tank.

[0054] In some embodiments, the liquid guiding component 200 is formed of a rigid material. During the storage and discharge of liquid carbon dioxide, there will be certain pressure and flow rate changes. The rigid material can withstand greater pressure without deformation, ensuring that the shape and position of the liquid guiding component 200 remain stable at all times. This ensures that the preset distance between the suction port 240 and the side wall 120 and the liquid level surface S1 remains unchanged, maintaining a good liquid suction effect and ensuring the stability and continuity of liquid carbon dioxide discharge.

[0055] For example, the fluid guiding component 200 is formed of a metal material.

[0056] The controller 300 is communicatively connected to the regulating plate 140 and can control the sliding of the regulating plate 140 to perform pressurization operations based on the pressure inside the first chamber 131. By monitoring the pressure value of the first chamber 131 in real time, the controller 300 precisely controls the sliding of the regulating plate 140 to pressurize the liquid carbon dioxide and meet the emission pressure requirements under different operating conditions.

[0057] In some embodiments, the mechanically pressurized liquid carbon dioxide storage and discharge device includes a pressure sensing component 301, which is communicatively connected to the controller 300. The pressure sensing component 301 is used to monitor the pressure inside the first chamber 131 in real time and transmit the pressure signal to the controller 300. The pressure sensing component 301 can be located inside the first chamber or it can be disposed outside the adjustable tank 100 and connected to the first pipe section 220. When discharging carbon dioxide medium, the controller 300 controls the control valve to discharge. Exemplarily, the control valve includes a solenoid valve 302 and a flow regulating valve 303. The solenoid valve 302 is used to control the switch, and the flow regulating valve 303 is used to adjust the opening degree.

[0058] The controller 300 has a built-in intelligent boosting algorithm. Based on the pressure change curve inside the first chamber 131, the current position of the regulating plate 140, and the preset boosting target, it automatically optimizes the movement trajectory and speed of the regulating plate 140 to achieve intelligent and efficient boosting operation.

[0059] When liquid carbon dioxide is stored in the first chamber 131, the controller 300 continuously monitors the internal pressure of the first chamber 131. When the pressure is lower than the set discharge pressure value, the controller 300 can issue a command according to a preset program. This command is transmitted to the drive mechanism of the regulating plate 140 through a communication line. The drive mechanism can be electric, hydraulic, or pneumatic. After receiving the command, it starts and pushes the regulating plate 140 to slide towards the first chamber 131, compressing the space of the first chamber 131, increasing the internal pressure, and thus pushing the liquid carbon dioxide out through the outlet 210 of the liquid guiding component 200.

[0060] In summary, the mechanically pressurized liquid carbon dioxide storage and emission device of this application embodiment achieves efficient storage and precise emission of liquid carbon dioxide through the coordinated operation of the adjustable tank 100, the liquid guiding component 200 and the controller 300. It has a simple structure, is easy to operate and has high safety, and has broad application prospects.

[0061] In some embodiments, a telescopic mechanism 150 is provided in the second cavity 132. The telescopic mechanism 150 is connected to the adjustment plate 140 and communicates with the controller 300 to receive instructions from the controller 300 to drive the adjustment plate 140 to slide.

[0062] In this embodiment, a telescopic mechanism 150 is connected to the adjusting plate 140. The telescopic mechanism 150 extends and retracts to drive the adjusting plate 140 to slide. The telescopic mechanism 150 can achieve precise linear extension and retraction. Compared with other possible driving methods, such as simple mechanical linkage structures, it can more precisely control the displacement of the adjusting plate 140. This allows for adjustments to the size of the first cavity 131 and the second cavity 132 in very small steps, meeting the requirements for extremely precise control of the liquid carbon dioxide storage capacity and pressure.

[0063] The telescopic mechanism 150 is communicatively connected to the controller 300 to receive commands from the controller 300 to slide the adjusting plate 140. This allows the telescopic mechanism 150 to respond quickly. When the controller 300 issues an adjustment command based on the pressure in the first chamber 131, the telescopic mechanism 150 can react rapidly and quickly slide the adjusting plate 140. This rapid response characteristic can effectively cope with sudden pressure changes, avoid pressure instability caused by adjustment delays, and ensure the efficient operation of the entire storage and discharge device.

[0064] Furthermore, the telescopic mechanism 150 has a relatively simple and robust structure, exhibiting high stability and reliability during long-term operation. Fewer moving parts and a simpler operating principle reduce the probability of malfunctions, decrease maintenance costs and downtime, and improve the overall availability and lifespan of the device.

[0065] By placing the telescopic mechanism in the second chamber, it avoids occupying the storage space of the first chamber, ensuring that the first chamber can be used to the maximum extent for storing liquid carbon dioxide, thus improving the space utilization of the tank. Simultaneously, the second chamber, serving as the sliding space for the adjusting plate, matches the working area of ​​the telescopic mechanism, making the overall structure of the device more compact and rational. Furthermore, the second chamber provides a relatively stable and enclosed working environment for the telescopic mechanism. During the sliding process of the adjusting plate driven by the telescopic mechanism, the accuracy and stability of the adjustment can be prevented from being affected by external factors.

[0066] In some embodiments, the inner side of the sidewall 120 is provided with at least one axially extending guide rail, and the edge of the adjusting plate 140 is provided with a locking block adapted to the guide rail, the locking block engaging with the guide rail.

[0067] The guide rail provides a precise guide path for the sliding of the adjusting plate 140, ensuring that the adjusting plate 140 can only move along the axial direction, greatly improving the accuracy of the adjusting plate 140's movement. Regardless of how the telescopic mechanism 150 drives the adjusting plate 140, the cooperation of the guide rail and the locking block ensures that the adjusting plate 140 will not deviate laterally, ensuring the adjustment accuracy of the space size of the first cavity 131 and the second cavity 132, thereby ensuring the accuracy of liquid carbon dioxide storage and pressure control.

[0068] The locking block and guide rail are tightly engaged, increasing the connection stability between the adjusting plate 140 and the side wall 120. During the operation of the device, especially when subjected to factors such as changes in liquid carbon dioxide pressure and external vibrations, the guiding structure can effectively disperse stress, prevent the adjusting plate 140 from shaking or loosening, ensure the structural stability of the entire adjustable tank 100, and extend the service life of the device.

[0069] Compared to other possible sliding connection methods, the combination of the guide rail and the locking block effectively reduces the friction area and degree of friction between the adjusting plate 140 and the side wall 120. This not only reduces the wear rate of components and the frequency of maintenance and replacement, but also prevents debris generated by excessive wear from entering the liquid carbon dioxide storage space, ensuring the purity of the liquid carbon dioxide and improving the reliability of the device.

[0070] This modular guide structure design makes installation relatively simple; the locking blocks simply need to be accurately engaged with the guide rails. During later maintenance, if the guide rails or locking blocks are damaged, they are easy to disassemble and replace, reducing maintenance costs and difficulty and improving the maintainability of the device.

[0071] This application does not limit the number of guide rails; there can be one or more. The number of locking blocks corresponds to the number of guide rails.

[0072] In some embodiments, a limiting part is provided at one end of the guide rail near the liquid guiding component 200 so that the adjusting plate 140 slides along the guide rail within a limited area, and the limiting part maintains a preset distance from the liquid guiding component 200 in the plane of the radial direction of the tank.

[0073] In this embodiment, a limiting part is provided at one end of the guide rail near the liquid guiding component 200. The limiting part can effectively limit the sliding range of the adjusting plate 140. The limiting part maintains a preset distance from the liquid guiding component 200 in the radial plane of the tank body. Maintaining this preset distance can prevent the adjusting plate 140 from sliding excessively and causing collision damage to the liquid guiding component 200 or other internal structures. During the operation of the device, when the telescopic mechanism 150 drives the adjusting plate 140 to perform pressurization operations, the limiting part can prevent the adjusting plate 140 from exceeding the reasonable range of movement due to control errors or abnormal conditions, thereby ensuring the safe and stable operation of the entire device.

[0074] This embodiment of the application limits the sliding area of ​​the adjusting plate 140, allowing it to move within a precise range, which helps improve the accuracy of spatial adjustment between the first cavity 131 and the second cavity 132. Because the movement range of the adjusting plate 140 is precisely limited, the controller 300 can more accurately control the position of the adjusting plate 140 based on pressure changes in the first cavity 131, thereby achieving fine control over the liquid carbon dioxide storage capacity and pressure, meeting the stringent pressure control requirements under different operating conditions.

[0075] In some embodiments, the edge of the adjusting plate 140 is provided with an elastic buffer layer. When the adjusting plate 140 slides to the limit position, the elastic buffer layer contacts the limiting part, which can play a buffering role, avoid rigid collisions from damaging the equipment, and ensure the safety of the pressurization process.

[0076] In some embodiments, the roughness of the guide rail gradually increases in the direction from the second cavity 132 to the first cavity 131.

[0077] When the adjusting plate 140 slides towards the first cavity 131 under the action of the telescopic mechanism 150, the friction between the locking block and the guide rail gradually increases as the roughness of the guide rail increases, which buffers and decelerates the adjusting plate 140. This helps to prevent the adjusting plate 140 from impacting the limiting part or other components due to excessive speed, further ensuring operational safety. When the adjusting plate 140 approaches the target position, the greater friction makes it easier for the adjusting plate 140 to stabilize in the required position, improving the accuracy of the position control of the adjusting plate 140, thereby improving the accuracy of the spatial adjustment of the first cavity 131 and the second cavity 132, which is beneficial for more precise control of the storage amount and pressure of liquid carbon dioxide.

[0078] Matching the gradual increase in roughness of the guide rail in the direction from the second cavity 132 to the first cavity 131, the telescopic mechanism 150 in this embodiment can be an elastic component such as a spring. The elastic component has a simple structure and fewer parts, reducing the complexity and manufacturing cost of the device, while also reducing potential failure points caused by an excessive number of parts. The elastic component has a certain degree of elasticity, which can buffer the movement of the adjusting plate 140 during telescopic movement, reducing vibration and impact caused by sudden pressure changes or rapid movement of the adjusting plate 140, and enhancing the stability of the mechanically pressurized liquid carbon dioxide storage and emission device.

[0079] In some embodiments, the side wall of the adjustable tank 100 further includes a locking member 160, and the adjusting plate 140 has a locking groove that cooperates with the locking member to fix the position of the adjusting plate 140 when it is not in operation.

[0080] When the mechanically pressurized carbon dioxide storage and emission device is not in operation, external forces such as vibration and collision may occur. The fixed adjustment plate 140 can prevent it from sliding freely under these external forces, avoid collisions between the adjustment plate 140 and other internal components of the tank, thereby protecting the adjustment plate 140 and the internal structure of the tank and extending the service life of the equipment.

[0081] When not in operation, the fixed adjustment plate 140 ensures that the space size of the first chamber 131 and the second chamber 132 remains at the set state. This helps maintain the pressure balance and gas environment inside the tank, allowing it to quickly enter normal operation when put back into operation, reducing startup preparation time.

[0082] Please see Figure 3 In some embodiments, the regulating plate 140 has a turbulence protrusion 141 on at least the surface facing the first cavity. The turbulence protrusion can act on the liquid carbon dioxide in the first cavity 131 during the sliding of the regulating plate to guide the liquid assembly, so as to equalize the pressure inside the first cavity.

[0083] As the regulating plate 140 slides toward the liquid guiding assembly, the liquid carbon dioxide in the first chamber 131 flows along with the movement of the regulating plate 140. This liquid carbon dioxide may exhibit laminar flow, meaning the fluid flows in stratified layers that do not mix. In this situation, local pressure imbalances can easily occur, with some areas experiencing excessively high pressure while others experience insufficient pressure, affecting the accuracy of pressure measurements.

[0084] In this embodiment, a turbulence protrusion 141 is provided on the surface of the regulating plate 140 at least facing the first cavity 131. The turbulence protrusion 141 disrupts the laminar flow state of the liquid carbon dioxide during its movement. When the liquid carbon dioxide flows past the turbulence protrusion 141, its flow direction and velocity change, generating turbulence. This turbulence ensures thorough mixing of the different parts of the liquid carbon dioxide, resulting in a more uniform energy distribution and avoiding local pressure imbalances. Consequently, during the pressurization process of the regulating plate 140 sliding towards the liquid guiding assembly, the pressure within the entire first cavity 131 can rise more evenly, improving the pressurization effect and enabling the device to operate more efficiently and stably, ensuring the smooth operation of the liquid carbon dioxide storage and discharge process.

[0085] When the regulating plate 140 slides to guide the liquid component 200 for pressurization, the liquid carbon dioxide in the first cavity 131 will generate a complex flow state due to the pushing of the regulating plate 140. If the pressure is uneven, it will cause the local flow velocity of the liquid carbon dioxide to be too fast or too slow, thereby causing liquid level fluctuations. The turbulence protrusion 141 can interact with the liquid carbon dioxide during the sliding of the regulating plate 140. On the one hand, the turbulence protrusion 141 will interfere with the large-scale, disordered flow of liquid carbon dioxide that might otherwise form, dividing it into multiple small-scale flow regions. These small-scale flows interact in different directions, making the pressure more evenly distributed inside the first cavity 131. For example, under the pushing of the regulating plate 140, the liquid carbon dioxide near the center of the regulating plate has a faster flow velocity and relatively higher pressure, while the flow velocity and pressure in the edge region are slower. The turbulence protrusion 141 can cause the high-speed fluid in the center region to change its flow direction after encountering the protrusion, mixing with the fluid in the edge region, thereby balancing the pressure. Once the pressure is balanced, the overall flow of liquid carbon dioxide becomes more stable, reducing fluctuations in liquid level caused by pressure differences and thus stabilizing the liquid level S1. On the other hand, the turbulence protrusion 141 increases the contact area and friction between the regulating plate 140 and the liquid carbon dioxide. When the regulating plate pushes the liquid carbon dioxide, this additional friction allows for more precise adjustment of the fluid's kinetic energy distribution. Uniform kinetic energy distribution means that the fluid's movement trend is more consistent across different locations, avoiding liquid level fluctuations caused by excessive local kinetic energy and further ensuring the stability of the liquid level S1.

[0086] This application does not limit the cross-sectional shape of the adjustable tank 100; it can be rectangular, rounded rectangular, or elliptical, and the shape of the adjusting plate 140 matches it. For example, Figure 1 The adjusting plate 140 is elliptical in shape. It can be understood that when a locking block is set on the adjusting plate 140, the elliptical shape is used for fine-tuning to match the guide rail.

[0087] In this embodiment, turbulence protrusions 141 may also be provided on the surface of the adjusting plate 140 facing the first cavity. The turbulence protrusions 141 may be evenly distributed on both sides of the adjusting plate 140 or unevenly distributed.

[0088] The number of the turbulence protrusions 141 in this application embodiment is not limited, and there may be one or more. For example, the turbulence protrusions 141 are disposed in the central region of the adjustment plate 140.

[0089] In some embodiments, a buffer layer is provided on the side of the adjusting plate 140 facing the first cavity 131. The buffer layer is made of an elastic material. When the adjusting plate slides under the control of the controller, the buffer layer can buffer the impact force of the adjusting plate on the liquid carbon dioxide in the first cavity.

[0090] A buffer layer made of elastic material is provided on the side of the regulating plate 140 facing the first cavity to buffer the impact force of the regulating plate on the liquid carbon dioxide in the first cavity. When the controller drives the regulating plate 140 to slide for pressurization, the regulating plate 140 applies a thrust to the liquid carbon dioxide in the first cavity 131. Without the buffer layer, this direct thrust would be instantly transmitted to the liquid carbon dioxide, easily causing a large impact force, resulting in drastic flow changes in the liquid carbon dioxide and thus causing liquid level fluctuations. The presence of the buffer layer allows it to absorb some of the energy transmitted by the regulating plate through its elastic deformation, slowing down the instantaneous action of the thrust, buffering the impact force on the liquid carbon dioxide, and thus maintaining its relative flow stability, effectively reducing liquid level fluctuations.

[0091] Significant fluctuations in liquid level can lead to unstable pressure within the equipment, increasing the risk of damage and potentially causing safety accidents. The buffer layer's ability to reduce liquid level fluctuations helps maintain stable internal pressure, mitigating safety hazards caused by abnormal pressure and ensuring long-term, stable, and safe operation of the equipment.

[0092] Precise liquid level control is crucial for the efficient operation of the device. The buffer layer reduces liquid level fluctuations, making liquid level changes smoother and facilitating accurate acquisition of liquid level data by the liquid level monitoring device. At the same time, based on more stable liquid level feedback, the controller can more accurately control the subsequent sliding operation of the regulating plate, achieving fine-tuning of the internal pressure and liquid level of the first chamber, thereby improving the overall operating efficiency and control accuracy of the device.

[0093] In some embodiments, the turbulence protrusion in this application can serve as a buffer layer, and the material of the turbulence protrusion can be set as an elastic material to further buffer the impact force of the regulating plate on the liquid carbon dioxide in the first cavity.

[0094] In some embodiments, a turbulence suppression structure is provided on the sidewall 120 of the first cavity 131. The turbulence suppression structure includes a plurality of spaced protrusions that can prevent liquid carbon dioxide from forming turbulence at the bottom of the first cavity 131 to stabilize the liquid level S1.

[0095] A turbulence suppression structure with multiple spaced protrusions is provided on the side wall 120 of the adjustable tank 100 to stabilize the liquid level S1. When liquid carbon dioxide flows in the first chamber 100 or undergoes dynamic changes due to factors such as the operation of the regulating plate 140, the protrusions on the side wall can effectively disturb the fluid boundary layer. Under normal circumstances, the fluid tends to form a boundary layer with uneven flow velocity near the side wall. If left unchecked, this may cause local turbulence, which can then be transmitted to the bottom, affecting the stability of the entire liquid level. These spaced protrusions can divide and disturb the flow of the boundary layer fluid, dispersing the energy that might otherwise converge to form large-scale turbulence, thereby reducing the possibility of turbulence at the bottom.

[0096] From an overall fluid dynamics perspective, this structure alters the flow field distribution of liquid carbon dioxide within the first cavity 131. When the fluid encounters the protrusions on the sidewall 120, it is forced to change its flow direction, forming a series of small-scale eddies. These eddies are not disordered turbulence, but rather, guided by the protrusions, are orderly distributed near the sidewall 120. Compared to the turbulence formed directly at the bottom, these controllable eddies generated near the sidewall can consume some of the fluid's kinetic energy, preventing excessive kinetic energy from being directly transferred to the bottom, thereby effectively stabilizing the flow state of the liquid carbon dioxide at the bottom and thus keeping the liquid level S1 stable.

[0097] During the long-term operation of the unit, a stable liquid level is crucial for ensuring the safe and efficient operation of the entire storage and emission system. Reduced bottom turbulence minimizes erosion and corrosion of the tank's bottom structure, extending the tank's service life. Simultaneously, a stable liquid level facilitates more precise control over the storage and emission of liquid carbon dioxide, improving the reliability and operability of the unit and providing strong support for the stable operation of the entire mechanically pressurized liquid carbon dioxide storage and emission system.

[0098] In this embodiment, the side wall 120 of the first cavity 131 can be segmented along the axial direction of the tank, and the protrusions are set in the segments that the adjusting plate 140 will not pass through. For example, the protrusions are set at the position opposite to the liquid guiding component 200 on the side wall 120. In this way, the adjusting plate 140 will not touch the protrusions during the movement, ensuring that the protrusions can continuously play the role of suppressing turbulence. For example, the protrusions are distributed in an array.

[0099] In some embodiments, the liquid guiding component includes a telescopic section located in the first cavity. The telescopic section can automatically adjust its length according to the liquid level change of the liquid carbon dioxide in the first cavity to maintain a preset distance between the liquid inlet of the liquid guiding component and the liquid level surface S1.

[0100] As liquid carbon dioxide is discharged, the liquid level inside the tank continuously changes. The expandable characteristic of the telescopic section ensures that the suction port of the liquid guiding component 200 always maintains a preset distance from the liquid level surface S1, stably absorbing liquid carbon dioxide regardless of whether the liquid level surface S1 is high or low. For example, when the liquid level drops, the telescopic section automatically extends to prevent the suction port of the liquid guiding component 200 from being exposed to the gas phase due to the drop in liquid level, preventing unstable liquid absorption and gas intake, and ensuring the continuity and stability of liquid carbon dioxide discharge.

[0101] For example, the telescopic section bends and extends toward the sidewall that bears the pressure of liquid carbon dioxide, so that the suction port 240 of the liquid guiding component 200 is not exposed to the gas phase due to the decrease in liquid level, thus preventing unstable liquid absorption and gas intake.

[0102] For example, the liquid guiding component 200 specifically includes an outlet 210, a first pipe section 220, a second pipe section 230, a suction port 240, and a balancing body. The liquid guiding component 200 penetrates the end wall 110 of the tank through the first pipe section 220. The first pipe section 220 is partially located inside the tank and partially located outside the tank. The outlet 210 is located at the end of the first pipe section 220 that extends out of the tank, facilitating the delivery of the absorbed carbon dioxide medium to subsequent processing stages. The first pipe section 220 extends parallel to the axial direction of the tank. This parallel arrangement ensures that the liquid carbon dioxide is subjected to a relatively stable force during discharge, reducing resistance changes that may occur due to pipe tilting or bending. The first pipe section 220 extends axially at a predetermined distance, allowing the liquid guiding component 200 to still discharge the liquid carbon dioxide working medium even when it accumulates towards one side of the end wall 110.

[0103] The second pipe section 230 is connected to one end of the first pipe section 220 located within the first cavity 131, and the suction port 240 is located at the free end of the second pipe section 230. The free end of the second pipe section 230 refers to the end that is not directly connected to the first pipe section 220 and is in a relatively free state. Under the pressure inside the tank, the liquid carbon dioxide working fluid enters the second pipe section 230 of the liquid guiding component 200 through the suction port 240, and then enters the first pipe section 220 through the second pipe section 230, finally being discharged outside the tank through the outlet 210.

[0104] In some embodiments, the second pipe section 230 is bent toward the sidewall that bears the pressure of liquid carbon dioxide, so that the suction port 240 of the liquid guiding component 200 is not exposed to the gas phase due to the decrease in liquid level, thereby preventing unstable liquid absorption and gas intake, and ensuring the continuity and stability of liquid carbon dioxide emission.

[0105] In some embodiments, the second pipe segment 230 may serve as a retractable segment.

[0106] When designing the tank, the preset distance between the suction port 240 and the side wall 120 can be accurately calculated based on the size and shape of the first cavity 131, ensuring that the suction port 240 is not too close to the side wall 120, which would cause uneven absorption, and that it will not affect the smooth absorption of carbon dioxide in liquid state when the storage is low.

[0107] Please refer to the following: Figures 1 to 4 In some embodiments, based on the mechanically pressurized carbon dioxide storage and emission device provided in the above embodiments, this application also provides a control method for the mechanically pressurized carbon dioxide storage and emission device, the method including:

[0108] S1: Obtain the internal pressure value of the adjustable storage tank when the adjustable storage tank discharges liquid carbon dioxide;

[0109] S2: When the pressure value is the first value, the control plate slides towards the end wall of the liquid guiding component extending into the first cavity to increase the pressure in the first cavity, wherein the first value is equal to or lower than a preset threshold value.

[0110] In this embodiment of the application, when the pressure in the first cavity 131 decreases, the pressure in the first cavity 131 is increased by controlling the adjustment plate 140 to slide towards the end wall 110 of the liquid guiding component in the first cavity 131, so that the pressure in the first cavity 131 meets the preset threshold value, thereby allowing the liquid carbon dioxide medium to continue to be discharged smoothly, increasing the discharge flow rate of the carbon dioxide medium, and improving the utilization rate of the carbon dioxide medium.

[0111] The controller 300 has a built-in intelligent boosting algorithm. Based on the pressure change curve inside the first chamber 131, the current position of the regulating plate 140, and the preset boosting target, it automatically optimizes and controls the movement trajectory and speed of the regulating plate 140 to achieve intelligent and efficient boosting operation.

[0112] In some embodiments, the adjustable storage tank discharges liquid carbon dioxide at a first valve opening degree, where the first opening degree is the maximum opening degree. A first time node t1 is obtained to mark the start of the liquid carbon dioxide discharge from the adjustable storage tank. When the pressure value is a first value, the adjusting plate slides towards the end wall of the liquid guiding component extending into the first cavity to increase the pressure in the first cavity. A second time node t2 is obtained to mark the liquid carbon dioxide discharge from the adjustable storage tank. When the time difference between the second time node t2 and the first time node t1 meets a first duration T1, the liquid carbon dioxide discharge from the adjustable storage tank and the sliding of the adjusting plate are stopped.

[0113] This application embodiment can accurately calculate and control the amount of carbon dioxide emitted by setting a fixed emission duration T1, combined with corresponding equipment and control valves, thereby achieving precise adjustment of the cooling range and rate. Especially in low-temperature environments requiring precise control, it can accurately reduce the temperature to a suitable range.

[0114] In some embodiments, the adjustable storage tank discharges liquid carbon dioxide at a second opening of the first valve, the second opening being 40% to 60% of the maximum opening; the discharge duration Tx of the adjustable storage tank discharging liquid carbon dioxide is obtained, and the opening of the first valve is increased as the discharge duration Tx increases; when the pressure value is a first value, the regulating plate is controlled to slide towards the end wall of the liquid guiding component extending into the first cavity to increase the pressure in the first cavity; when the discharge duration Tx meets the first duration T1, the discharge of liquid carbon dioxide from the adjustable storage tank and the sliding of the regulating plate are stopped.

[0115] The mechanically pressurized carbon dioxide storage and emission device of this application embodiment can also adopt an approximate constant flow emission mode. The approximate constant flow mode can make the flow rate of liquid carbon dioxide relatively stable, thereby ensuring that the rate of cold energy transfer to the outside is relatively uniform, so that the temperature fluctuation of the object being cooled is small, which is conducive to maintaining a stable low temperature environment. It is particularly suitable for scenarios with high requirements for temperature stability, such as some high-precision scientific experiments and electronic chip manufacturing.

[0116] The cooling effect can be controlled relatively precisely. By fine-tuning the parameters of the constant flow system according to the changes in the heat load of the object being cooled, the temperature can be precisely regulated.

[0117] For example, as the discharge time increases, the opening degree of the first valve K1 = the second opening degree + (100 - the second opening degree) * Tx / T1.

[0118] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A mechanically pressurized liquid carbon dioxide storage and emission device, characterized in that, include: An adjustable tank includes two end walls opposite each other along its own axis, a side wall connected between the two end walls, and an adjusting plate located between the two end walls and slidably connected to the side wall. The adjusting plate divides the interior of the adjustable tank into a relatively adjustable first cavity and a second cavity, wherein the first cavity is used to store liquid carbon dioxide. A liquid guiding component is distributed within the first cavity, penetrating the end wall of the adjustable tank and extending at least a predetermined distance along the axial direction. The controller is communicatively connected to the regulating plate, and the controller can control the regulating plate to slide to perform pressurization operation according to the pressure value inside the first cavity.

2. The mechanically pressurized liquid carbon dioxide storage and emission device according to claim 1, characterized in that, The second cavity is provided with a telescopic mechanism, which is connected to the adjusting plate and communicates with the controller to receive instructions from the controller to drive the adjusting plate to slide.

3. The mechanically pressurized liquid carbon dioxide storage and emission device according to claim 1, characterized in that, The inner side of the sidewall is provided with at least one guide rail extending along the axial direction, and the edge of the adjusting plate is provided with a locking block adapted to the guide rail, the locking block engaging with the guide rail.

4. The mechanically pressurized liquid carbon dioxide storage and emission device according to claim 3, characterized in that, A limiting part is provided at one end of the guide slide rail near the liquid guiding component, so that the adjusting plate slides along the guide slide rail within a limited area, and the limiting part maintains a preset distance from the liquid guiding component in the plane of the radial direction of the tank.

5. The mechanically pressurized liquid carbon dioxide storage and emission device according to claim 3, characterized in that, The roughness of the guide rail gradually increases in the direction from the second cavity to the first cavity.

6. The mechanically pressurized liquid carbon dioxide storage and emission device according to claim 1, characterized in that, The adjusting plate has turbulence protrusions on at least the surface facing the first cavity. The turbulence protrusions can act on the liquid carbon dioxide in the first cavity during the sliding of the adjusting plate toward the liquid guiding component, so as to balance the pressure inside the first cavity.

7. The mechanically pressurized liquid carbon dioxide storage and emission device according to claim 1, characterized in that, The first cavity has a turbulence suppression structure on its side wall. The turbulence suppression structure includes a plurality of spaced protrusions. The protrusions can prevent liquid carbon dioxide from forming turbulence at the bottom of the first cavity to stabilize the liquid level.

8. The mechanically pressurized liquid carbon dioxide storage and emission device according to claim 1, characterized in that, The liquid guiding component includes a telescopic section located in the first cavity. The telescopic section can automatically adjust its length according to the liquid level change of liquid carbon dioxide in the first cavity to maintain a preset distance between the liquid inlet of the liquid guiding component and the liquid level.

9. A control method for a mechanically pressurized liquid carbon dioxide storage and emission device according to any one of claims 1-8, characterized in that, include: When the adjustable storage tank discharges liquid carbon dioxide, the pressure value inside the first chamber is obtained; When the pressure value is a first value, the regulating plate is controlled to slide towards the end wall of the fluid guiding component extending into the first cavity to increase the pressure in the first cavity, wherein the first value is equal to or lower than a preset threshold value.

10. The control method for the mechanically pressurized liquid carbon dioxide storage and emission device according to claim 9, characterized in that, The adjustable storage tank discharges liquid carbon dioxide at a first valve opening degree, where the first opening degree is the maximum opening degree. The first time point t1 at which the adjustable storage tank begins discharging liquid carbon dioxide is then determined. When the pressure value is the first value, the adjusting plate slides towards the end wall of the liquid guiding component extending into the first cavity to increase the pressure in the first cavity; Obtain the second time node t2 for the discharge of liquid carbon dioxide from the adjustable storage tank. When the time difference between the second time node t2 and the first time node t1 meets the first duration T1, stop the discharge of liquid carbon dioxide from the adjustable storage tank and stop the sliding of the regulating plate.

11. The control method for the mechanically pressurized liquid carbon dioxide storage and emission device according to claim 9, characterized in that, The adjustable storage tank discharges liquid carbon dioxide at a second opening degree of the first valve, where the second opening degree is 40% to 60% of the maximum opening degree; Obtain the discharge duration Tx of liquid carbon dioxide from the adjustable storage tank, and increase the opening of the first valve as the discharge duration Tx increases; When the pressure value is the first value, the control adjustment plate slides towards the end wall of the liquid guiding component extending into the first cavity to increase the pressure in the first cavity; When the emission duration Tx meets the first duration T1, the emission of liquid carbon dioxide from the adjustable storage tank and the sliding of the regulating plate are stopped.

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