Storage tanks and tank containers

Abstract

This application belongs to the field of tank containers, specifically relating to a storage tank and a tank container. The storage tank includes a tank body, a discharge pipe, a discharge valve, and a pressure relief pipe. The tank body has opposing top and bottom ends. A discharge port is provided at the top of the tank body. The discharge pipe is disposed within the tank body, with a first end extending to the bottom end of the tank body and a second end extending into the discharge port. The discharge valve is disposed at the discharge port to control the connection or disconnection between the discharge pipe and the outside of the tank body. The pressure relief pipe is disposed within the tank body, with its first end connected to the discharge pipe and located between the first and second ends of the discharge pipe. During transportation, when the pressure inside the tank body is greater than the pressure inside the discharge pipe, the liquid in the discharge pipe can flow back into the tank body through the pressure relief pipe, reducing the impact on the discharge valve and thus reducing or eliminating material leakage at the discharge port.

Description

Technical Field

[0001] This application belongs to the field of tank containers, specifically relating to a storage tank and a tank container. Background Technology

[0002] Tank containers are a type of container used for transporting liquids and gases. A tank container consists of a frame and a sealed container housed within that frame. The sealed container is typically made of stainless steel or carbon steel, while the frame can be the same as other standard containers. Tank containers are available in various capacities and sizes, can have open or closed tops, and can be heated or refrigerated when necessary. Tank containers are commonly used to transport dangerous goods such as chemicals, petroleum products, and sensitive cargo like pharmaceuticals.

[0003] Some tank containers have a discharge port on the top of the sealed container. A discharge pipe extends from the discharge port to the bottom of the sealed container. The discharge port also has a discharge valve to control its opening and closing. During discharge, the discharge pipe is connected to a pump to either extract the material stored in the sealed container or pressurize the top of the sealed container with air to force the material out of the discharge port. To ensure safe transportation, the discharge port must maintain a good seal.

[0004] However, during transportation, tank containers inevitably experience shaking and impacts, leading to increased pressure within the sealed container. Simultaneously, temperature fluctuations can also cause this pressure increase. When the pressure inside the sealed container exceeds the pressure inside the discharge pipe, the stored material may surge upwards and leak from the discharge port, resulting not only in material loss but also posing significant safety hazards. Summary of the Invention

[0005] The purpose of this application is to provide a storage tank and a tank container to reduce or eliminate material leakage at the unloading port and improve the transportation safety of the tank container.

[0006] To achieve the above objectives, this application provides a storage tank, comprising:

[0007] The tank has a top and a bottom, and the top of the tank is provided with a discharge port;

[0008] A discharge pipe is disposed inside the tank, with a first end extending to the bottom end of the tank and a second end extending into the discharge port.

[0009] A discharge valve is installed on the discharge port to control the connection or disconnection of the discharge pipe with the outside of the tank.

[0010] A pressure relief pipe is installed inside the tank. The first end of the pressure relief pipe is connected to the unloading pipe, and the first end of the pressure relief pipe is located between the first end and the second end of the unloading pipe.

[0011] Optionally, the inner cavity of the tank includes a gas phase space and a liquid phase space. The gas phase space is located on the side closer to the discharge port, and the liquid phase space is located on the side farther from the discharge port. The first end of the pressure relief pipe is located in the gas phase space, and the second end of the pressure relief pipe is connected to the gas phase space.

[0012] Optionally, the storage tank further includes a pressure balancing valve and a valve switch. The pressure balancing valve is disposed on the pressure relief pipe and controls the connection or disconnection of the first and second ends of the pressure relief pipe. The valve switch is connected to the pressure balancing valve and includes a control unit and an execution unit. The control unit and the execution unit are connected, and the execution unit is connected to the pressure balancing valve. At least the control unit of the valve switch is disposed outside the tank body.

[0013] Optionally, the pressure relief pipe, the pressure balancing valve, and the actuation unit are all located in the gas phase space, while the control unit is located outside the tank.

[0014] Optionally, at least a portion of the pressure relief pipe is located outside the tank body, the pressure balancing valve and the valve switch are located outside the tank body, and the pressure balancing valve is located on the portion of the pressure relief pipe located outside the tank body.

[0015] Optionally, the tank body is provided with a reflux port, which connects the inner cavity of the tank body to the outside, and the second end of the pressure relief pipe is connected to the reflux port.

[0016] Optionally, the storage tank further includes a vapor phase valve port, which connects the inner cavity of the tank body to the outside. The storage tank also includes a vapor phase valve disposed on the vapor phase valve port. The vapor phase valve includes a first channel and a second channel, both of which connect the vapor phase valve port to the outside of the tank body. The vapor phase valve further includes a valve core disposed in the first channel, which controls the opening or closing of the first channel. The second end of the pressure relief pipe is connected to the second channel. Optionally, the pressure balancing valve is connected to the top of the tank body.

[0017] Optionally, both the pressure relief pipe and the discharge pipe are circular pipes, and the inner diameter of the pressure relief pipe is smaller than the inner diameter of the discharge pipe.

[0018] This application also provides a tank container, comprising:

[0019] Container frame;

[0020] The storage tank is located within the container frame.

[0021] The storage tanks and tank containers disclosed in this application have the following beneficial effects:

[0022] In this application, a discharge port is provided at the top of the tank body, and a discharge pipe is installed inside the tank body. The first end of the discharge pipe extends to the bottom of the tank body, and the second end extends into the discharge port. A discharge valve is installed on the discharge port to control the connection or disconnection between the discharge pipe and the outside of the tank body. A pressure relief pipe is installed inside the tank body, and its first end is connected to the discharge pipe. During transportation, when the pressure inside the tank body is greater than the pressure inside the discharge pipe, the liquid in the discharge pipe can flow back into the tank body through the pressure relief pipe, reducing the impact on the discharge valve at the top of the discharge pipe, thereby reducing or eliminating material leakage at the discharge port and improving the transportation safety of the tank container.

[0023] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0025] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0026] Figure 1 This is a schematic diagram of the storage tank structure built into the pressure balancing valve in the embodiments of this application.

[0027] Figure 2 This is a schematic diagram of the structure of the storage tank with the pressure balancing valve externally mounted in an embodiment of this application.

[0028] Figure 3 This application embodiment shows a schematic diagram of the connection between the pressure relief pipe and the gas phase valve port of the storage tank.

[0029] Figure 4 This application provides a schematic diagram of the structure of a tank container.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Storage tank;

[0032] 110. Tank body; 111. Discharge port; 112. Gas phase space; 113. Liquid phase space; 114. Reflux port; 115. Gas phase valve port;

[0033] 120. Discharge pipe; 130. Discharge valve; 140. Pressure relief pipe; 150. Pressure balancing valve; 160. Valve switch; 170. Gas phase valve;

[0034] 200. Container frame. Detailed Implementation

[0035] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0036] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0037] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.

[0038] Figure 1 This is a schematic diagram of the storage tank structure built into the pressure balancing valve in an embodiment of this application. See also... Figure 1 As shown, in this embodiment, the storage tank 100 includes a tank body 110, a discharge pipe 120, a discharge valve 130, and a pressure relief pipe 140. The tank body 110 has opposing top and bottom ends. A discharge port 111 is provided at the top of the tank body 110, through which liquids or gases stored in the tank body 110 can be discharged, and liquids or gases can also be loaded through the discharge port 111. The discharge pipe 120 is disposed inside the tank body 110 and has opposing first and second ends. The first end of the discharge pipe 120 extends to the bottom end of the tank body 110, and the second end of the discharge pipe 120 extends into the discharge port 111. There is a small gap between the first end of the discharge pipe 120 and the bottom end of the tank body 110, or the bottom end of the tank body 110 has a groove, with the first end of the discharge pipe 120 extending into the groove at the bottom end of the tank body 110. The discharge pipe 120 and the discharge port 111 can be sealed together.

[0039] A discharge valve 130 is installed on the discharge port 111 to control the connection or disconnection between the discharge pipe 120 and the external environment of the tank body 110. A connecting flange can be installed at the discharge port 111 of the tank body 110, and a connecting flange can also be installed on the discharge valve 130. The connecting flanges at the discharge port 111 of the tank body 110 and the connecting flange of the discharge valve 130 can be connected by fasteners, including bolts. A pressure relief pipe 140 is installed inside the tank body 110. The pressure relief pipe 140 has a first end and a second end, with the first end of the pressure relief pipe 140 communicating with the discharge pipe 120 and located between the first end and the second end of the discharge pipe 120.

[0040] To ensure safe transportation, the unloading port of tank containers must maintain a good seal. However, during transportation, tank containers are inevitably subjected to shaking and impact, which increases the pressure inside the sealed container. Simultaneously, temperature fluctuations can also cause this pressure increase. When the pressure inside the sealed container exceeds the pressure inside the unloading pipe, the material stored inside may surge upwards and leak from the unloading port, resulting not only in material loss but also posing a significant safety hazard.

[0041] In this embodiment, the storage tank 100 includes a tank body 110, a discharge pipe 120, a discharge valve 130, and a pressure relief pipe 140. The top of the tank body 110 is provided with a discharge port 111. The discharge pipe 120 is disposed inside the tank body 110. The first end of the discharge pipe 120 extends to the bottom end of the tank body 110, and the second end of the discharge pipe 120 extends into the discharge port 111. The discharge valve 130 is disposed on the discharge port 111 to control the connection or disconnection between the discharge pipe 120 and the outside of the tank body 110. The pressure relief pipe 140 is disposed inside the tank body 110, and the first end of the pressure relief pipe 140 is connected to the discharge pipe 120. During transportation, when the pressure inside the tank 110 is greater than the pressure inside the unloading pipe 120, the liquid inside the unloading pipe 120 can flow back into the tank 110 through the pressure relief pipe 140, reducing the impact on the unloading valve 130 at the upper end of the unloading pipe 120, thereby reducing or eliminating material leakage at the unloading port 111 and improving the transportation safety of the tank container.

[0042] For example, both the pressure relief pipe 140 and the discharge pipe 120 are circular pipes, with the inner diameter of the pressure relief pipe 140 being smaller than that of the discharge pipe 120. The inner diameter of the discharge pipe 120 can be 8 to 10 times the inner diameter of the pressure relief pipe 140. In other words, the inner diameter of the discharge pipe 120 is much larger than that of the pressure relief pipe 140.

[0043] The inner diameter of the unloading pipe 120 is much larger than that of the pressure relief pipe 140, which can reduce the impact of the pressure relief pipe 140 on unloading and improve the unloading efficiency of the unloading pipe 120.

[0044] See Figure 1As shown, the inner cavity of the tank 110 includes a gas phase space 112 and a liquid phase space 113. The gas phase space 112 is located on the side closer to the discharge port 111, and the liquid phase space 113 is located on the side farther from the discharge port 111. The first end of the pressure relief pipe 140 is located in the gas phase space 112, and the second end of the pressure relief pipe 140 is connected to the gas phase space 112.

[0045] The first end of the pressure relief pipe 140 is located in the gas phase space 112, and the second end of the pressure relief pipe 140 is connected to the gas phase space 112. This allows the pressure at the upper end of the unloading pipe 120 to be equal to the pressure in the gas phase space 112 at the upper end of the tank body 110, preventing the liquid in the unloading pipe 120 from surging up and impacting the unloading valve 130, thereby reducing or eliminating material leakage at the unloading port 111 and improving the transportation safety of the tank container.

[0046] In some embodiments, the discharge pipe 120 is connected to the discharge port 111 via its own flange and is fastened with bolts.

[0047] The discharge pipe 120 is connected to the discharge port 111 through its own flange, which can prevent the discharge pipe 120 from moving up and down, avoid poor sealing between the discharge pipe 120 and the discharge port 111, and prevent the discharge pipe 120 from impacting the discharge valve 130.

[0048] See Figure 1 As shown, the storage tank 100 also includes a pressure balancing valve 150 and a valve switch 160. The pressure balancing valve 150 is disposed on the pressure relief pipe 140, controlling the connection or disconnection of the first and second ends of the pressure relief pipe 140. The valve switch 160 is connected to the pressure balancing valve 150, and the valve switch 160 includes a control unit and an execution unit, which are connected. The execution unit is connected to the pressure balancing valve 150, and at least the control unit of the valve switch 160 is disposed outside the tank body 110.

[0049] The pressure balancing valve 150 can be an electrically controlled valve, and the valve switch 160 is an electrically automatic switch. The actuator of the valve switch 160 is located inside the tank 110 and connected to the pressure balancing valve 150, while the control unit of the valve switch 160 is located outside the tank 110. The control unit of the valve switch 160 can be a remote control. The actuator and control unit of the valve switch 160 are connected via wires or wirelessly.

[0050] The pressure balancing valve 150 can also be a manually controlled valve, and the valve switch 160 is a manual mechanical switch. The control unit of the valve switch 160 can be a handle, and the actuator of the valve switch 160 can be a rotating shaft, which rotates and seals with the upper end of the tank body 110.

[0051] The storage tank 100 also includes a pressure balancing valve 150 and a valve switch 160. The pressure balancing valve 150 is installed on the pressure relief pipe 140. The valve switch 160 includes a control unit and an execution unit. The execution unit is connected to the pressure balancing valve 150. The control unit of the valve switch 160 is located outside the tank body 110. The valve switch 160 controls the pressure balancing valve 150 to connect or disconnect the first and second ends of the pressure relief pipe 140. During transportation, the valve switch 160 controls the pressure balancing valve 150 to open, so that the pressure at the upper end of the unloading pipe 120 is equal to the pressure in the gas phase space 112 at the upper end of the tank body 110. This prevents liquid in the unloading pipe 120 from surging up and impacting the unloading valve 130, thereby reducing or eliminating material leakage at the unloading port 111 and improving the transportation safety of the tank container. During unloading, the valve switch 160 controls the pressure balancing valve 150 to close, which can eliminate the influence of the pressure relief pipe 140 on unloading and improve the unloading efficiency of the unloading pipe 120.

[0052] It should be noted that the storage tank 100 includes a pressure balancing valve 150 and a valve switch 160. The pressure balancing valve 150 is installed on the pressure relief pipe 140, and the valve switch 160 controls the opening or closing of the pressure balancing valve 150. However, it is not limited to this. A one-way valve can also be installed on the pressure relief pipe 140 to replace the pressure balancing valve 150 and the valve switch 160. The specific choice depends on the situation.

[0053] A one-way valve is installed on the pressure relief pipe 140. During transportation, when the pressure inside the tank 110 is greater than the pressure at the upper end of the unloading pipe 120, the liquid in the unloading pipe 120 surges upward, and the increased pressure inside the unloading pipe 120 opens the one-way valve, allowing the liquid in the unloading pipe 120 to flow back into the tank 110. During unloading, the one-way valve is in the closed state, and the gas in the gas phase space 112 cannot flow back into the unloading pipe 120 through the one-way valve, thus eliminating the influence of the pressure relief pipe 140 on unloading and improving the unloading efficiency of the unloading pipe 120.

[0054] See Figure 1 As shown, the pressure relief pipe 140, pressure balancing valve 150, and actuator are all located in the gas phase space 112, while the control unit is located outside the tank 110.

[0055] The pressure balancing valve 150 is installed inside the tank 110, which protects the pressure balancing valve 150 and extends its service life.

[0056] In some embodiments, the pressure balancing valve 150 may also be located outside the tank body 110. Figure 2 This is a schematic diagram of the storage tank with an externally mounted pressure balancing valve in an embodiment of this application. See also... Figure 2As shown, at least a portion of the pressure relief pipe 140 is located outside the tank body 110, and the pressure balancing valve 150 and valve switch 160 are located outside the tank body 110. The pressure balancing valve 150 is located on the portion of the pressure relief pipe 140 located outside the tank body 110.

[0057] The pressure balancing valve 150 is located outside the tank body 110. The valve switch 160 that controls the opening or closing of the pressure balancing valve 150 can also be located outside the tank body 110. This design reduces the installation difficulty of the valve switch 160 and the manufacturing difficulty of the storage tank 100.

[0058] In some embodiments, the pressure balancing valve 150 is connected to the top of the tank 110. When the pressure balancing valve 150 is located inside the tank 110, it can be connected to the inner wall of the top of the tank 110. When the pressure balancing valve 150 is located outside the tank 110, it can be connected to the outer wall of the top of the tank 110.

[0059] The pressure balancing valve 150 is connected to the top of the tank 110, which prevents the pressure balancing valve 150 from rotating with the rotating shaft of the valve switch 160. It is also simpler to control the opening or closing of the pressure balancing valve 150 through the valve switch 160, such as the handle.

[0060] See Figure 2 As shown, a return port 114 is provided on the tank body 110. The return port 114 connects the inner cavity of the tank body 110 and the outside. The second end of the pressure relief pipe 140 is connected to the return port 114.

[0061] A return port 114 is provided on the tank body 110. During transportation, the pressure balance valve 150 is opened by the valve switch 160 to make the pressure at the upper end of the unloading pipe 120 equal to the pressure in the gas phase space 112 at the upper end of the tank body 110. This prevents the liquid in the unloading pipe 120 from rushing up and impacting the unloading valve 130, thereby reducing or eliminating material leakage at the unloading port 111 and improving the transportation safety of the tank container.

[0062] Figure 3 A schematic diagram of the connection between the pressure relief pipe and the gas phase valve port of the storage tank in this embodiment is provided. Figure 3As shown, a vapor phase valve port 115 may also be provided on the tank body 110 of the storage tank 100, connecting the inner cavity of the tank body 110 to the outside. The storage tank 100 also includes a vapor phase valve 170, which is disposed on the vapor phase valve port 115. The vapor phase valve 170 includes a first channel and a second channel, both of which connect the vapor phase valve port 115 and the outside of the tank body 110. The vapor phase valve 170 also includes a valve core disposed in the first channel, which controls the opening or closing of the first channel. The second end of the pressure relief pipe 140 is connected to the second channel. That is, the valve core and the first channel control the connection between the vapor phase space 112 and the outside, and the second channel connects the vapor phase space 112 to the pressure relief pipe 140.

[0063] During transportation, the pressure balancing valve 150 is opened by the valve switch 160, so that the pressure at the upper end of the unloading pipe 120 is equal to the pressure in the gas phase space 112 at the upper end of the tank body 110. This prevents the liquid in the unloading pipe 120 from surging up and impacting the unloading valve 130, thereby reducing or eliminating material leakage at the unloading port 111 and improving the transportation safety of the tank container.

[0064] During unloading, the pressure relief valve 160 can be closed and the gas phase valve 170 opened to balance the pressure in the gas phase space 112, thus completing the unloading process. Alternatively, during unloading, with valve 160 closed and the gas phase valve 170 connected to a pressurizing device, opening the gas phase valve 170 increases the pressure in the gas phase space 112, forcing the liquid in the liquid phase space 113 out through the unloading pipe 120, thereby improving unloading efficiency.

[0065] This application also provides a tank container. Figure 4 A structural schematic diagram of the tank container in this embodiment is provided. (See also...) Figure 4 As shown, the tank container includes a storage tank 100 and a container frame 200, with the storage tank 100 housed within the container frame 200.

[0066] The tank container includes a storage tank 100, which includes a tank body 110, a discharge pipe 120, a discharge valve 130, and a pressure relief pipe 140. The top of the tank body 110 is provided with a discharge port 111. The discharge pipe 120 is located inside the tank body 110. The first end of the discharge pipe 120 extends to the bottom end of the tank body 110, and the second end of the discharge pipe 120 extends into the discharge port 111. The discharge valve 130 is located on the discharge port 111 to control the connection or disconnection between the discharge pipe 120 and the outside of the tank body 110. The pressure relief pipe 140 is located inside the tank body 110, and the first end of the pressure relief pipe 140 is connected to the discharge pipe 120. During transportation, when the pressure inside the tank 110 is greater than the pressure inside the unloading pipe 120, the liquid inside the unloading pipe 120 can flow back into the tank 110 through the pressure relief pipe 140, reducing the impact on the unloading valve 130 at the upper end of the unloading pipe 120, thereby reducing or eliminating material leakage at the unloading port 111 and improving the transportation safety of the tank container.

[0067] It should be noted that the storage tank 100 can be used in tank containers, but is not limited to them. The storage tank 100 can also be used in tank trucks, etc., depending on the specific circumstances.

[0068] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0069] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0070] In the description of this specification, references to terms such as "some embodiments," "exemplarily," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this application.

Claims

1. A storage tank, characterized in that, include: The tank has a top and a bottom, and the top of the tank is provided with a discharge port; A discharge pipe is disposed inside the tank, with a first end extending to the bottom end of the tank and a second end extending into the discharge port. A discharge valve is installed on the discharge port to control the connection or disconnection of the discharge pipe with the outside of the tank. A pressure relief pipe is installed inside the tank. The first end of the pressure relief pipe is connected to the unloading pipe, and the first end of the pressure relief pipe is located between the first end and the second end of the unloading pipe.

2. The storage tank according to claim 1, characterized in that, The inner cavity of the tank includes a gas phase space and a liquid phase space. The gas phase space is located on the side closer to the discharge port, and the liquid phase space is located on the side farther from the discharge port. The first end of the pressure relief pipe is located in the gas phase space, and the second end of the pressure relief pipe is connected to the gas phase space.

3. The storage tank according to claim 2, characterized in that, The storage tank also includes a pressure balancing valve and a valve switch. The pressure balancing valve is installed on the pressure relief pipe and controls the connection or disconnection of the first and second ends of the pressure relief pipe. The valve switch is connected to the pressure balancing valve. The valve switch includes a control unit and an execution unit. The control unit and the execution unit are connected. The execution unit is connected to the pressure balancing valve. At least the control unit of the valve switch is located outside the tank body.

4. The storage tank according to claim 3, characterized in that, The pressure relief pipe, the pressure balancing valve, and the actuation unit are all located in the gas phase space, while the control unit is located outside the tank.

5. The storage tank according to claim 3, characterized in that, At least a portion of the pressure relief pipe is located outside the tank body, the pressure balancing valve and the valve switch are located outside the tank body, and the pressure balancing valve is located on the portion of the pressure relief pipe located outside the tank body.

6. The storage tank according to claim 5, characterized in that, The tank is provided with a reflux port, which connects the inner cavity of the tank to the outside, and the second end of the pressure relief pipe is connected to the reflux port.

7. The storage tank according to claim 5, characterized in that, The storage tank also includes a gas phase valve port, which connects the inner cavity of the tank body to the outside. The storage tank also includes a gas phase valve, which is disposed on the gas phase valve port. The gas phase valve includes a first channel and a second channel, both of which connect the gas phase valve port to the outside of the tank body. The gas phase valve also includes a valve core disposed in the first channel, which controls the opening or closing of the first channel. The second end of the pressure relief pipe is connected to the second channel.

8. The storage tank according to claim 3, characterized in that, The pressure balancing valve is connected to the top of the tank.

9. The storage tank according to claim 1, characterized in that, Both the pressure relief pipe and the unloading pipe are circular pipes, and the inner diameter of the pressure relief pipe is smaller than the inner diameter of the unloading pipe.

10. A tank container, characterized in that, include: Container frame; The storage tank as described in any one of claims 1 to 9 is disposed within the container frame.

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