Controlled atmosphere grain storage device

Abstract

The utility model relates to a controlled atmosphere grain storage technology, and discloses a controlled atmosphere grain storage device. The controlled atmosphere grain storage device comprises a carbon dioxide liquid tank car, a vaporization skid, a pressure regulating valve group, circulation fans, carbon dioxide liquid packaging grids and a granary, the circulation fans are installed on the granary, the input ends of the circulation fans are communicated with the granary, the output ends of the circulation fans are communicated with the pressure regulating valve group, one end of the pressure regulating valve group is connected with the granary, and the other end of the pressure regulating valve group is connected with the vaporization skid. The vaporization skid is connected with the output end of the carbon dioxide liquid tank car, and the output end of the carbon dioxide liquid container is connected between the carbon dioxide liquid tank car and the vaporization skid. According to the modified atmosphere grain storage device, the problem that an existing modified atmosphere grain storage device is poor in flexibility is solved by introducing the movable carbon dioxide liquid containing lattice and the vaporization skid. By means of the design, the positions of the device assemblies can be adjusted according to needs, and the adaptability of the device in different application scenes is enhanced.

Description

Technical Field

[0001] The utility model relates to the technology of controlled atmosphere grain storage, and particularly to a controlled atmosphere grain storage device. Background Art

[0002] The technology of controlled atmosphere grain storage is a method for long-term grain storage. By changing the gas composition in the grain storage environment, it can inhibit the growth and reproduction of pests and slow down the self-metabolic activities of grains, so as to achieve the purposes of pest control, mildew prevention and freshness preservation. At present, the common practice in the technology of controlled atmosphere grain storage is to reduce the oxygen concentration and increase the carbon dioxide concentration. This method can effectively control insect activities, reduce fungal growth, and delay the aging process of grains.

[0003] However, the existing controlled atmosphere grain storage devices usually adopt a fixed and single gas supply mode, which restricts its flexibility to a certain extent. Traditional controlled atmosphere grain storage devices rely on fixed gas supply sources, such as fixed gas tanks or gas cylinders. Once these gas supply sources are installed, their positions are difficult to change, which limits the adaptability of the devices in different application scenarios. In addition, such devices either completely rely on external gas supply or rely on fixed gas storage equipment. This single gas supply method is not flexible enough when facing emergencies or demand changes. When the fixed gas storage equipment needs to be replaced or maintained, it may cause the controlled atmosphere operation to be temporarily interrupted, thus affecting the grain storage effect.

[0004] In summary, the existing controlled atmosphere grain storage devices have poor flexibility, resulting in limited adaptability in different application scenarios. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a controlled atmosphere grain storage device, making the controlled atmosphere grain storage device more flexible and more adaptable.

[0006] To solve the above technical problems, an embodiment of the utility model provides a controlled atmosphere grain storage device, which includes a carbon dioxide liquid tank truck, a vaporization skid, a pressure regulating valve group, a circulation fan and a granary. A plurality of circulation fans are installed on the granary. The input end of the circulation fan is connected to the granary, and the output end is connected to the pressure regulating valve group. One end of the pressure regulating valve group is connected to the granary, and the other end is connected to the vaporization skid. The vaporization skid is connected to the output end of the carbon dioxide liquid tank truck.

[0007] Furthermore, the controlled atmosphere grain storage device further includes a carbon dioxide liquid container grid, which is connected between the carbon dioxide liquid tank truck and the vaporization skid, and the carbon dioxide liquid container grid is equipped with a self-moving structure.

[0008] Furthermore, the number of the vaporization skids is multiple, and multiple vaporization skids are connected in parallel between the vaporization skid and the pressure regulating valve group, and the vaporization skid is equipped with a self-moving structure.

[0009] Further, the pressure regulating valve group includes a pressure regulating pipeline, on which a pressure remote transmission instrument, a cryogenic short-axis globe valve and a self-operated pressure reducing valve are installed.

[0010] Further, a safety liquid inlet branch is provided between the carbon dioxide liquid tank truck and the vaporization skid, and a cryogenic safety valve and a cryogenic globe valve are installed on the safety liquid inlet branch.

[0011] Further, a safety gas inlet branch is provided between the vaporization skid and the pressure regulating valve group, and a cryogenic safety valve and a cryogenic short-axis globe valve are installed on the safety gas inlet branch.

[0012] Further, cryogenic globe valves are installed at the output ends of both the carbon dioxide liquid tank truck and the carbon dioxide liquid container.

[0013] Further, the controlled atmosphere grain storage device further includes a control system, which is electrically connected to the pressure remote transmission instrument, the cryogenic short-axis globe valve, the self-operated pressure reducing valve, the cryogenic safety valve and the cryogenic globe valve.

[0014] Beneficial effects: By introducing a movable carbon dioxide liquid container and a vaporization skid, the present utility model solves the problem of poor flexibility of the existing controlled atmosphere grain storage device. This design enables the device components to be adjusted in position according to needs, enhancing the adaptability of the device in different application scenarios. Even when the main gas supply source is unavailable, the device can still continue to operate through the backup carbon dioxide liquid container, ensuring the continuity of the controlled atmosphere operation. In addition, multiple parallel vaporization skids have movable structures and can be quickly adjusted in position according to actual needs to ensure the continuity and high efficiency of the gasification process. Through the electrical connection between the control system and the key equipment, automatic monitoring and management of the grain storage environment are realized, further improving the flexibility of the device and the convenience of operation. In summary, the present utility model improves the overall efficiency and reliability of the controlled atmosphere grain storage device. Description of the Drawings

[0015] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the figures do not constitute a scale limitation.

[0016] Figure 1 is the structural schematic diagram of the present utility model;

[0017] Figure 2 is the working principle schematic diagram of the circulation fan in the present utility model.

[0018] Explanation of the accompanying symbols: 1. Carbon dioxide liquid tank truck; 2. Carbon dioxide liquid container; 3. Vaporization skid; 4. Pressure regulating valve group; 5. Circulation fan; 6. Granary. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in various embodiments of the present invention to facilitate a better understanding of the present application. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the claims of this application can be achieved.

[0020] The embodiment of the utility model provides a controlled atmosphere grain storage device.

[0021] like Figure 1 - Figure 2 As shown, a controlled atmosphere grain storage device includes a carbon dioxide liquid tank truck 1, a vaporization skid 3, a pressure regulating valve group 4, a circulation fan 5 and a granary 6. Several circulation fans 5 are installed on the granary 6. The input end of the circulating fan 5 is connected to the granary 6, and the output end is connected to the pressure regulating valve group 4. One end of the pressure regulating valve group 4 is connected to the granary 6, and the other end is connected to the vaporization skid 3. The vaporization skid 3 is connected to the output end of the carbon dioxide liquid tank truck 1.

[0022] The utility model supplies liquid carbon dioxide through a carbon dioxide liquid tank truck 1, and the device can quickly respond to different grain storage needs, improving the ability to deal with emergencies. The design of the mobile structure allows the device components to be adjusted as needed, enhancing the adaptability of the device in different application scenarios.

[0023] Among them, the controlled atmosphere grain storage device also includes a carbon dioxide liquid container 2, which is connected between the carbon dioxide liquid tank truck 1 and the vaporization skid 3, and the carbon dioxide liquid container 2 has its own mobile structure.

[0024] Even if the main gas supply source (carbon dioxide liquid tank truck 1) is unavailable, the device can continue to operate through the spare carbon dioxide liquid container 2, ensuring the continuity of the gas conditioning operation. The present invention achieves flexibility and convenience in the gas supply method by introducing a movable carbon dioxide liquid container 2. Specifically, the carbon dioxide liquid container 2 can not only continue to provide liquid carbon dioxide to the device after the carbon dioxide liquid tank truck 1 leaves, but its own mobile structure allows it to be flexibly moved between different working positions, greatly enhancing the adaptability and convenience of the device.

[0025] There are multiple vaporization skids 3, and the multiple vaporization skids 3 are connected in parallel between the vaporization skid 3 and the pressure regulating valve group 4. The vaporization skid 3 is equipped with a mobile structure by itself. The multiple parallel vaporization skids 3 also have a mobile structure and can quickly adjust their positions according to actual needs, so as to ensure the continuity and efficiency of the gasification process. As Figure 1 shown, the dotted line marked with valve V8 in the figure is the input end of the parallel pipeline, and the dotted line marked with valve V9 in the figure is the output end of the parallel pipeline. Another vaporization skid 3 can be connected between the two.

[0026] The vaporization skid 3 mainly includes a heating unit, a vaporization chamber, and a vaporization fan. The heating unit heats the liquid carbon dioxide in the vaporization chamber to vaporize it, and the vaporization fan is installed inside the vaporization chamber or at a position adjacent to the outlet of the vaporization chamber to enhance the air flow circulation and promote the vaporization of the liquid carbon dioxide.

[0027] The pressure regulating valve group 4 includes a pressure regulating pipeline, on which a pressure remote transmission instrument, a cryogenic short-axis globe valve, and a self-operated pressure reducing valve are installed. The function of the pressure regulating valve group 4 is to regulate and control the pressure of the carbon dioxide gas output from the vaporization skid 3 to ensure that the air flow pressure entering the granary 6 is stable within a range suitable for storing grains. The pressure remote transmission instrument is used to monitor the gas pressure in the pipeline in real time and transmit the data to the control system. The control system can adjust the valve opening in a timely manner according to the feedback data to maintain the pressure near the set value. Specifically, when the detected pressure is too high, the control system will send a signal to the self-operated pressure reducing valve to open it wider and release the excess gas, thereby reducing the pressure. The cryogenic short-axis globe valve is used to cut off the air flow in case of emergency to prevent accidents. It can be reliably closed at extremely low temperatures to block the gas flow and protect the device from damage. If the device detects an abnormal increase in temperature or other dangerous situations, the control system will immediately close the cryogenic short-axis globe valve to cut off the gas source and prevent the accident from expanding. By sensing the change of the outlet pressure to automatically adjust the opening degree and keep the outlet pressure at a constant level. When the pressure inside the granary suddenly drops for some reason, the self-operated pressure reducing valve will automatically increase the opening degree and increase the gas flow rate to restore the predetermined pressure level inside the granary. Through the coordinated operation of the above three valve bodies, the pressure regulating valve group 4 can ensure the stability of the gas pressure in the device and provide a suitable grain storage environment for the granary. At the same time, the pressure regulating valve group 4 also has a safety protection function and can respond to abnormal situations in a timely manner to protect the entire device from damage. For example, under normal operating conditions, when the pressure remote transmission instrument detects that the pressure fluctuation exceeds the preset range, the control system will stabilize the pressure by adjusting the action of the self-operated pressure reducing valve; in abnormal situations, such as when the pressure rises sharply due to equipment failure or external condition changes, the cryogenic short-axis globe valve will quickly close to prevent excessive gas from entering the granary, thus ensuring the safety of grain storage.

[0028] There is a safety liquid inlet branch between the carbon dioxide liquid tanker 1 and the vaporization skid 3, and a cryogenic safety valve and a cryogenic globe valve are installed on the safety liquid inlet branch. As Figure 1 shown, the cryogenic safety valve is represented by V4, and the cryogenic globe valve is represented by V3. The cryogenic safety valve is used to automatically open when the pressure in the liquid inlet pipeline exceeds the preset safety value, releasing the excess liquid pressure to avoid damage to the equipment caused by high pressure. The globe valve is used to manually or automatically cut off the liquid flow to prevent the liquid from continuing to flow into the device under abnormal working conditions. When the carbon dioxide liquid tanker 1 transports liquid carbon dioxide to the vaporization skid 3, if for some reason the pressure in the liquid inlet pipeline suddenly rises and exceeds the designed safety pressure upper limit, the cryogenic safety valve will automatically open and release a part of the liquid until the pressure drops to the safe range. At the same time, if the device detects an abnormal situation, the control system can activate the cryogenic globe valve to stop the liquid flow, thus preventing the accident from further expanding.

[0029] There is a safety gas inlet branch between the vaporization skid 3 and the pressure regulating valve group 4, and a cryogenic safety valve and a cryogenic stub shaft globe valve are installed on the safety gas inlet branch. As Figure 1 shown, the cryogenic safety valve is represented by V6, and the cryogenic stub shaft globe valve is represented by V7. The safety gas inlet branch is to ensure the safety of the vaporized carbon dioxide gas before entering the pressure regulating valve group 4. The cryogenic safety valve opens when the gas pressure exceeds the safety limit, releasing the excess gas to prevent overpressure. The cryogenic stub shaft globe valve is responsible for cutting off the gas flow when necessary to protect the subsequent equipment from high-pressure damage. When the vaporization skid 3 converts liquid carbon dioxide into gaseous carbon dioxide and is ready to send it into the pressure regulating valve group 4, if the device detects that the gas pressure generated by the vaporization skid rises abnormally, the cryogenic safety valve will automatically open and discharge the excess gas to reduce the pressure to the safe level. If the device determines that the pressure cannot be controlled by conventional means, or detects other emergency situations, the control system will instruct the cryogenic stub shaft globe valve to close, preventing the gas from continuing to flow to the pressure regulating valve group, thus avoiding potential safety risks.

[0030] Cryogenic globe valves are installed at the output ends of both the carbon dioxide liquid tanker 1 and the carbon dioxide liquid container 2. Figure 1Among them, the cryogenic stop valve connected in series with the carbon dioxide liquid tanker 1 is represented by V1, and the cryogenic stop valve connected in series with the carbon dioxide liquid container 2 is represented by V2. The cryogenic stop valve plays a crucial safety protection role in the controlled atmosphere grain storage device. Its main function is to quickly cut off the flow of liquid carbon dioxide under abnormal working conditions (such as equipment maintenance, replacement, or abnormal pressure increase in the device), so as to prevent potential hazards caused by leakage or excessive supply. The cryogenic stop valve can work reliably in a low-temperature environment to ensure the safety of the device. In addition, in cooperation with V1 and V2, it can also realize the switching of three liquid supply modes, namely, the liquid supply from the carbon dioxide liquid tanker 1 to the vaporization skid 3, the liquid supply from the carbon dioxide liquid container 2 to the vaporization skid 3, and the liquid supply from the carbon dioxide liquid container 2 as a temporary or standby gas supply source to the vaporization skid 3.

[0031] The controlled atmosphere grain storage device also includes a control system, which is electrically connected to the pressure remote transmission instrument, the cryogenic short-axis stop valve, the self-operated pressure reducing valve, the cryogenic safety valve, and the cryogenic stop valve. Through automated management and regulation, the control system ensures that the gas conditions in the grain storage environment meet the preset standards, and at the same time guarantees the safe operation of the device. The control system not only improves the efficiency and accuracy of the controlled atmosphere grain storage process, but also enhances the safety and reliability of the device, ensuring the effective protection of grains during storage.

[0032] Those of ordinary skill in the art can understand that the above embodiments are specific examples for implementing the present utility model, and in practical applications, various changes can be made to its form and details without departing from the spirit and scope of the present utility model.

Claims

1. A controlled atmosphere grain storage device, characterized in that, It includes a carbon dioxide liquid tank truck (1), a vaporization skid (3), a pressure regulating valve group (4), a circulation fan (5) and a granary (6). A number of circulation fans (5) are installed on the granary (6). The input end of the circulation fan (5) is connected to the granary (6), and the output end is connected to the pressure regulating valve group (4). One end of the pressure regulating valve group (4) is connected to the granary (6), and the other end is connected to the vaporization skid (3). The vaporization skid (3) is connected to the output end of the carbon dioxide liquid tank truck (1).

2. The controlled atmosphere grain storage device according to claim 1, characterized in that, The controlled atmosphere grain storage device further includes a carbon dioxide liquid container grid (2). The carbon dioxide liquid container grid (2) is connected between the carbon dioxide liquid tank truck (1) and the vaporization skid (3), and the carbon dioxide liquid container grid (2) is equipped with a self - moving structure.

3. An apparatus for storing grain in controlled atmosphere according to claim 2, characterized in that, The number of the vaporization skids (3) is multiple. Multiple vaporization skids (3) are connected in parallel between the vaporization skid (3) and the pressure regulating valve group (4), and the vaporization skid (3) is equipped with a self - moving structure.

4. The controlled atmosphere grain storage device according to claim 3, characterized in that, The pressure regulating valve group (4) includes a pressure regulating pipeline, on which a pressure remote transmission instrument, a cryogenic short - shaft globe valve and a self - acting pressure reducing valve are installed.

5. The controlled atmosphere grain storage device according to claim 4, wherein There is a safety liquid inlet branch between the carbon dioxide liquid tank truck (1) and the vaporization skid (3), and a cryogenic safety valve and a cryogenic globe valve are installed on the safety liquid inlet branch.

6. The modified atmosphere grain storage device according to claim 5, wherein There is a safety gas inlet branch between the vaporization skid (3) and the pressure regulating valve group (4), and a cryogenic safety valve and a cryogenic short - shaft globe valve are installed on the safety gas inlet branch.

7. The modified atmosphere grain storage device according to claim 5, characterized in that, Cryogenic globe valves are installed at the output ends of both the carbon dioxide liquid tank truck (1) and the carbon dioxide liquid container grid (2).

8. A modified atmosphere grain storage device according to any one of claims 2-7, characterized in that, The controlled atmosphere grain storage device further includes a control system, which is electrically connected to the pressure remote transmission instrument, the cryogenic short - shaft globe valve, the self - acting pressure reducing valve, the cryogenic safety valve and the cryogenic globe valve.

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