Dual tank type pressure boosting gas supply device

Abstract

The application discloses a double-tank type pressurized gas supply device, which comprises a tank for storing low-temperature liquefied gas, specifically comprises a first tank and a second tank, and the low-temperature liquefied gas forms a first liquid level and a second liquid level relative to the first tank and the second tank respectively; a gas supply pipe has a gas port and is used for inputting or outputting gas; the gas supply pipe comprises a first gas supply pipe and a second gas supply pipe, which are arranged on the first tank and the second tank respectively and extend along the length direction of the first tank and the second tank; in a natural state, the first gas supply pipe is located above the first liquid level, and the second gas supply pipe is located above the second liquid level; in an inclined state, the first gas supply pipe and the second gas supply pipe are partially immersed below the first liquid level and the second liquid level, and the gas port of one of the gas supply pipes is not immersed, so that the pressurized gas supply work of the device in the inclined state is ensured, and the influence of external factors on the device is reduced.

Description

Technical Field

[0001] This invention relates to the field of cryogenic liquefied gas storage tank technology, and further to a dual-tank type pressurized gas supply device. Background Technology

[0002] Currently, in the field of cryogenic liquefied gas storage tanks, these tanks generally have functions such as filling, pressurizing, and supplying gas. To achieve these functions, a piping system with a specific structure needs to be installed inside the tank. The filling rate of a cryogenic liquid storage tank is generally between 80% and 95%, depending on the tank's volume and the stored medium. The pressurization and gas phase supply of a cryogenic liquefied gas storage tank typically share a single piping system, located in the upper gas phase space of the tank. This is because if the gas supply pipeline is submerged in the cryogenic liquefied gas, the gas flowing out of the supply pipeline will be directly liquefied, preventing pressurization.

[0003] It is known that when the tank is tilted, especially when the liquid level is high, this section of the pipe will be submerged by liquid and gas. The self-pressurizing return gas will be liquefied by the liquid and gas, preventing the tank from pressurizing. This problem is usually solved by reducing the tank's fill rate. However, with a fixed loading capacity, reducing the tank's fill rate will inevitably increase equipment costs significantly, so it cannot fundamentally solve the problem.

[0004] In conclusion, improvements to the current technology are necessary. Summary of the Invention

[0005] To address the aforementioned technical problems, the present invention aims to provide a dual-tank type pressurized gas supply device that solves the problem of inclined gas supply by cleverly setting and arranging the gas supply pipes in the two tanks without reducing the tank filling rate, thus ensuring the normal operation of the pressurized gas supply device.

[0006] To achieve the above objectives, the present invention provides a dual-tank type pressurized gas supply device suitable for supplying cryogenic liquefied gas, comprising:

[0007] A storage tank for storing the cryogenic liquefied gas, including a first storage tank and a second storage tank, wherein the cryogenic liquefied gas forms a first liquid level and a second liquid level relative to the first storage tank and the second storage tank, respectively;

[0008] A gas supply pipe, having a gas inlet, is used to input gas into the storage tank or to transport gas from the storage tank to the outside.

[0009] The gas supply pipe includes a first gas supply pipe and a second gas supply pipe, which are respectively located inside the first storage tank and the second storage tank, and extend along the length of the first storage tank and the second storage tank, respectively.

[0010] Under natural conditions, the first air supply pipe is located above the first liquid surface, and the second air supply pipe is located above the second liquid surface;

[0011] In the tilted state, the first air supply pipe and the second air supply pipe are partially submerged below the first liquid surface and the second liquid surface, and the air inlet of one of the air supply pipes is not submerged, thereby enabling the dual-tank type pressurized air supply device to perform pressurized air supply.

[0012] It should be noted that the first gas supply pipe and the second gas supply pipe are respectively installed in the first storage tank and the second storage tank. Under natural conditions, that is, when the storage tanks are not tilted, the two tanks can be pressurized and supplied with gas simultaneously, which can significantly improve the gas supply efficiency. Under tilted conditions, the gas inlets of the first gas supply pipe and the second gas supply pipe will not be submerged at the same time, thus ensuring that the device can perform normal pressurized gas supply.

[0013] In some embodiments, the two ends of the storage tank along its length are respectively distinguished as the bow end and the stern end;

[0014] Furthermore, the first and second storage tanks are arranged horizontally side by side, so that the bow and stern of the first storage tank correspond to the bow and stern of the second storage tank. The air inlet of the first air supply pipe is close to the bow of the first storage tank, and the air inlet of the second air supply pipe is close to the stern of the second storage tank.

[0015] When the bow of the storage tank is tilted toward the bottom of the storage tank, the air inlet of the first air supply pipe is submerged by the first liquid surface, and the air inlet of the second air supply pipe is above the second liquid surface.

[0016] When the stern of the storage tank is tilted toward the bottom of the storage tank, the air inlet of the second air supply pipe is submerged by the second liquid surface, and the air inlet of the first air supply pipe is located above the first liquid surface.

[0017] Here, the air inlets of the first and second air supply pipes are located near the bow and stern of the storage tank, respectively. This ensures that even if the storage tank tilts at the bow or stern, the air inlet of one of the air supply pipes remains above the liquid level, thus preventing the gas from liquefying and enabling normal pressurized gas supply.

[0018] In some embodiments, the first gas supply pipe includes a first gas supply main pipe and at least two first gas supply branch pipes, wherein the first gas supply branch pipes are respectively connected to the first gas supply main pipe.

[0019] The second gas supply pipe includes a second gas supply main pipe and at least two second gas supply branch pipes, and the second gas supply branch pipes are respectively connected to the second gas supply main pipe.

[0020] The first gas supply branch pipe and the second gas supply branch pipe are used to input gas into the corresponding storage tank for pressurization or to output the gas in the storage tank to the outside.

[0021] Understandably, by setting up main gas supply pipes and branch gas supply pipes, the extension area of ​​the gas supply pipeline is further expanded. At the same time, the setting of branch gas supply pipes also improves gas supply efficiency and increases the gas input or output.

[0022] In some embodiments, the head end of the first gas supply pipe is located at the bow end of the first storage tank, and the gas inlet of the first gas supply pipe is located on the side of the first gas supply pipe away from the bow end of the first storage tank.

[0023] The first gas supply main extends from its gas inlet toward the stern of the first storage tank and branches to form corresponding first gas supply branch pipes, which are evenly distributed on both sides of the first gas supply main.

[0024] In some embodiments, the two ends of the second gas supply pipe extend to the bow and stern of the second storage tank, respectively, and the gas inlet of the second gas supply pipe is located on the side of the second gas supply pipe away from the bow of the second storage tank.

[0025] Furthermore, the second main gas supply pipe extends from its air inlet toward the bow to form a branch, thereby forming a corresponding second branch gas supply pipe, which is evenly distributed on both sides of the second main gas supply pipe.

[0026] In some embodiments, the first gas supply branch pipe and the second gas supply branch pipe are evenly provided with concave and convex structures, and the first gas supply branch pipe and the second gas supply branch pipe are distinguished into straight sections and raised sections by the concave and convex structures.

[0027] The protruding section of each of the first gas supply branches protrudes in a direction away from the axis of the first gas supply main, and the protruding section of each of the second gas supply branches protrudes in a direction away from the axis of the second gas supply main.

[0028] It should be noted that the raised section on the gas supply branch pipe can adjust the distance between the gas supply branch pipe and the liquid surface. When the storage tank is tilted along the axis of the corresponding gas supply main pipe, the distance between the raised section of one side of the gas supply branch pipe and the liquid surface is greater, which can ensure that it is not submerged. At the same time, due to the uniform arrangement of the raised section and the straight section, the gas supply to each position is more uniform when supplying gas into the storage tank.

[0029] In some embodiments, there are two first gas supply branches, which are fixed to the inner wall of the first storage tank by several pipe clamps, and each pipe clamp is located on the straight section of the corresponding first gas supply branch to avoid the protruding section.

[0030] There are two second gas supply branches. The two second gas supply branches are fixed to the inner wall of the second storage tank by several pipe clamps, and each pipe clamp is located on the straight section of the corresponding second gas supply branch to avoid the protruding section.

[0031] In some embodiments, a tee pipe is provided at the connection between the first gas supply main pipe and the two first gas supply branch pipes, and at the connection between the second gas supply main pipe and the two second gas supply branch pipes, the tee pipe being used to divert gas.

[0032] It should be noted that the tee pipe can connect the main gas supply pipe and the branch gas supply pipe, thereby enabling the gas to flow between the main gas supply pipe and the branch gas supply pipe.

[0033] In some embodiments, each of the first gas supply branch pipe and the second gas supply branch pipe is provided with a plurality of air holes in the axial direction for allowing gas to flow through the plurality of air holes.

[0034] When the storage tank is tilted about its length axis, at least one of the first gas supply branches is above the first liquid level and at least one of the second gas supply branches is above the second liquid level, thereby enabling the corresponding first and second gas supply branches to achieve gas flow through the air holes for simultaneous pressurization and gas supply to both tanks.

[0035] Understandably, several air holes are set on both the first and second gas supply branches, forming a continuous gas supply line extending along the length of the storage tank. This ensures that when one side of the gas supply branch is submerged, the other side of the main gas supply can still work with the corresponding main gas supply to pressurize and supply gas, thus guaranteeing the working performance of the two storage tanks.

[0036] In some embodiments, both the first gas supply main pipe and the second gas supply main pipe have a bend section, the bend section being close to the corresponding gas inlet and protruding towards the bottom of the storage tank, for intercepting liquid mixed in the gas.

[0037] Compared with the prior art, the dual-tank type booster gas supply device provided by the present invention has the following beneficial effects:

[0038] 1. The present invention provides a dual-tank type pressurized gas supply device, wherein the first gas supply pipe and the second gas supply pipe are respectively installed in two tanks. When the tanks are not tilted, the dual tanks can be pressurized and supplied with gas simultaneously, which can significantly improve the gas supply efficiency. When tilted, due to the dual-tank setup, the gas inlets of the first gas supply pipe and the second gas supply pipe will not be submerged at the same time, thereby ensuring normal pressurized gas supply.

[0039] 2. The present invention provides a dual-tank type pressurized gas supply device, wherein gas supply branch pipes are arranged on both sides of the gas supply main pipe. When one side of the gas supply branch pipe is submerged, the other side of the gas supply main pipe can still cooperate with the corresponding gas supply main pipe to achieve pressurized gas supply, ensuring that the two tanks can be pressurized and supplied at the same time.

[0040] 3. The dual-tank type pressurized gas supply device provided by the present invention has a raised section on the gas supply branch pipe that can adjust the distance between the gas supply branch pipe and the liquid surface. When the tank is tilted along the axial direction of the corresponding gas supply main pipe, the distance between the raised section of one side of the gas supply branch pipe and the liquid surface is relatively far, which can ensure that it is not submerged. At the same time, due to the uniform arrangement of the raised section and the straight section, the gas supply to each position is more uniform when supplying gas to the tank. Attached Figure Description

[0041] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.

[0042] Figure 1 This is a schematic diagram of the structure of the first air supply pipe and the second air supply pipe in one embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the structure of the first and second storage tanks in one embodiment of the present invention.

[0044] Reference numerals: First storage tank 1; Second storage tank 2; First gas supply pipe 3; First main gas supply pipe 31; First branch gas supply pipe 32; Second gas supply pipe 4; Second main gas supply pipe 41; Second branch gas supply pipe 42; Pipe clamp 5; Straight section 600; Raised section 700. Detailed Implementation

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0046] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0047] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0048] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] In one embodiment, refer to the appendix to the specification. Figure 1 The present invention describes a dual-tank type pressurized gas supply device. The dual-tank type pressurized gas supply device provided by the present invention solves the problem of inclined gas supply by the ingenious setting and arrangement of the gas supply pipes in the two tanks without adjusting the tank filling rate, thus ensuring the normal operation of the pressurized gas supply device.

[0052] Reference manual attached Figure 1 and Figure 2 The present invention provides a dual-tank type pressurized gas supply device, which includes a tank and a gas supply pipe. The tank is used to store cryogenic liquefied gas, specifically including a first tank 1 and a second tank 2. The cryogenic liquefied gas forms a first liquid surface and a second liquid surface with respect to the first tank 1 and the second tank 2, respectively.

[0053] The gas supply pipe has a gas inlet for introducing gas into the storage tank or expelling gas from the storage tank to the outside. Specifically, it includes a first gas supply pipe 3 and a second gas supply pipe 4. The two are respectively located inside the first storage tank 1 and the second storage tank 2, and extend along the length of the first storage tank 1 and the second storage tank 2, respectively.

[0054] Under natural conditions, the first air supply pipe 3 is located above the first liquid level, and the second air supply pipe 4 is located above the second liquid level.

[0055] In the tilted state, the first air supply pipe 3 and the second air supply pipe 4 are partially submerged below the first liquid surface and the second liquid surface, and the air inlet of one of the air supply pipes is not submerged, so that the dual-tank type pressurized air supply device can perform pressurized air supply.

[0056] It should be noted that the first gas supply pipe 3 and the second gas supply pipe 4 are respectively installed in the first storage tank 1 and the second storage tank 2. Under natural conditions, that is, when the storage tanks are not tilted, the two tanks can be pressurized and supplied with gas simultaneously, which can significantly improve the gas supply efficiency. Under tilted conditions, the gas inlets of the first gas supply pipe 3 and the second gas supply pipe 4 will not be submerged at the same time, thus ensuring that the device can perform normal pressurized gas supply.

[0057] In this embodiment, one end of the first gas supply pipe 3 and the second gas supply pipe 4 will extend out of the storage tank and be connected to the external equipment that needs gas supply. The specific equipment is not limited in this embodiment. Operators can adjust and modify the connected equipment according to specific needs.

[0058] Understandably, the gas inlet can directly supply or exhaust gas. For example, when the pipeline is relatively simple and there are only one or two gas supply pipes in each storage tank, the gas inlet is also an outlet or inlet of the gas supply pipe. Alternatively, it can be indirectly connected to a pipeline as an intermediate medium. In this case, the gas inlet is similar to a connector, thereby connecting some hollow tubular objects to realize the gas supply.

[0059] In one embodiment, the two ends of the storage tank along its length are respectively distinguished as the bow end and the stern end.

[0060] Furthermore, the first storage tank 1 and the second storage tank 2 are arranged horizontally side by side, so that the bow and stern of the first storage tank 1 correspond to the bow and stern of the second storage tank 2. The air inlet of the first air supply pipe 3 is close to the bow of the first storage tank 1, and the air inlet of the second air supply pipe 4 is close to the stern of the second storage tank 2.

[0061] When the bow of the storage tank tilts towards the bottom of the tank, the air inlet of the first air supply pipe 3 is submerged by the first liquid surface, and the air inlet of the second air supply pipe 4 is above the second liquid surface.

[0062] When the stern of the storage tank is tilted towards the bottom of the tank, the air inlet of the second air supply pipe 4 is submerged by the second liquid surface, while the air inlet of the first air supply pipe 3 is above the first liquid surface.

[0063] Here, the air inlet of the first air supply pipe 3 and the air inlet of the second air supply pipe 4 are close to the bow and stern of the storage tank, respectively. This ensures that when the storage tank tilts at the bow or stern, the air inlet of one of the air supply pipes remains above the liquid surface, thus preventing the gas from liquefying and enabling normal pressurized gas supply.

[0064] It should also be noted that the bow and stern are essentially the same as the fore and aft ends. This type of dual-tank pressurization system is designed for pressurizing the gas supply when the tanks are tilted, so it is generally used on ships. In this case, the bow can be understood as the end closer to the bow, and the stern as the end closer to the stern.

[0065] In the following description, the application scenario of this dual-tank pressurized gas supply device will be assumed to be marine, and the bow and stern of the tanks will be assumed to face the bow and stern of the ship. Of course, in other embodiments, the bow and stern of the tanks can be interchanged, and the tanks can also be set vertically along the length of the ship. Such adjustments are easily obtained by those skilled in the art, and therefore should also be included in the protection scope of this invention.

[0066] As described above, the air inlets of the first air supply pipe 3 and the second air supply pipe 4 are positioned close to the bow and stern respectively, allowing them to be staggered. During bow and stern tilting, the first and second liquid levels will inevitably tilt accordingly, and the liquid in the tank will shift to one side. This causes one side of the air inlet to be submerged, preventing the gas from flowing beyond the submerged area and liquefying. However, the other air inlet remains above the liquid level, preventing both inlets from being simultaneously submerged and liquefied, thus hindering normal pressurization and gas supply.

[0067] In one embodiment, based on the above embodiments, such as Figure 1 As shown, the first gas supply pipe 3 includes a first gas supply main pipe 31 and at least two first gas supply branch pipes 32, and the first gas supply branch pipes 32 are respectively connected to the first gas supply main pipe 31.

[0068] The second gas supply pipe 4 includes a second gas supply main pipe 41 and at least two second gas supply branch pipes 42, which are respectively connected to the second gas supply main pipe 41.

[0069] The first gas supply branch pipe 32 and the second gas supply branch pipe 42 are used to input gas into the corresponding storage tank for pressurization or to output the gas in the storage tank to the outside.

[0070] Understandably, by setting up main gas supply pipes and branch gas supply pipes, the extension area of ​​the gas supply pipeline is further expanded. At the same time, the setting of branch gas supply pipes also improves gas supply efficiency and increases the gas input or output.

[0071] The aforementioned first gas supply pipe 3 and second gas supply pipe 4 include corresponding main pipes and branch pipes. Under the premise of allowing conditions, the number of first gas supply branch pipes 32 and second gas supply branch pipes 42 connected to the first gas supply main pipe 31 and the second gas supply main pipe 41 can be continuously increased to realize multi-channel gas flow.

[0072] It should be noted that the axes of the first gas supply main pipe 31 and the second gas supply main pipe 41 are generally corresponding to or coincide with the central axis of the storage tank, so that the corresponding gas supply branches can be evenly distributed and can also serve as the base point.

[0073] Based on the above embodiments, each of the first gas supply branch pipe 32 and the second gas supply branch pipe 42 is provided with a plurality of air holes along the axial direction for allowing gas to flow through the air holes.

[0074] When the storage tank tilts about its length as the axis of rotation, at least one first gas supply branch pipe 32 is above the first liquid level and at least one second gas supply branch pipe 42 is above the second liquid level, so that the corresponding first gas supply branch pipe 32 and second gas supply branch pipe 42 achieve gas flow through the air hole, which is used for simultaneous pressurization and gas supply to both tanks.

[0075] Understandably, several air holes are provided on both the first gas supply branch pipe 32 and the second gas supply branch pipe 42, forming a continuous gas supply structure extending along the length of the storage tank. This ensures that when one side of the gas supply branch pipe is submerged, the other side of the main gas supply pipe can still cooperate with the corresponding main gas supply pipe to achieve pressurized gas supply, thus guaranteeing the working performance of the two storage tanks.

[0076] In one embodiment, the head end of the first gas supply pipe 31 is located at the bow end of the first storage tank 1, and the gas inlet of the first gas supply pipe 31 is located on the side of the first gas supply pipe 31 away from the bow end of the first storage tank 1.

[0077] The first gas supply main pipe 31 extends from its gas inlet toward the stern end of the first storage tank 1 and branches to form corresponding first gas supply branch pipes 32, which are evenly distributed on both sides of the first gas supply main pipe 31.

[0078] In one embodiment, the two ends of the second gas supply pipe 41 extend to the bow and stern of the second storage tank 2, respectively, and the gas inlet of the second gas supply pipe 41 is located on the side of the second gas supply pipe 41 away from the bow of the second storage tank 2.

[0079] Furthermore, the second main gas supply pipe 41 extends from its air inlet toward the bow to form a branch, thereby forming a corresponding second gas supply branch pipe 42, which is evenly distributed on both sides of the second main gas supply pipe 41.

[0080] The above embodiments can be combined with the appendix. Figure 1 The outlet of the first gas supply main pipe 31 is connected to the corresponding first gas supply branch pipe 32. When pressurizing the first storage tank 1, that is, when gas is input into the first storage tank 1, the gas will be transported to the first gas supply branch pipe 32 through the first gas supply main pipe 31, and then sprayed into the tank through the air hole on the first gas supply branch pipe 32 to achieve pressurization inside the tank. The process of transporting the gas inside the tank to external equipment is the reverse process, which will not be described in detail here.

[0081] When the first storage tank 1 rotates or tilts along the axial direction, at least one first gas supply branch pipe 32 will be above the liquid surface and not submerged. The gas can still flow through the vent and will not be liquefied, thus achieving normal pressurized gas supply.

[0082] Similarly, the pressurization and gas supply process of the second gas supply pipe 4 and the second storage tank 2 is also similar. It can be seen that the second gas supply main pipe 41 is longer than the first gas supply main pipe 31 because the second gas supply main pipe 41 extends directly from the bow to the stern, and then branches from the stern to form the second gas supply branch pipe 42. The second gas supply branch pipe 42 then extends to the bow to form an integral structure.

[0083] What we need to understand now is how the gas is supplied when the bow or stern is tilting in this situation.

[0084] Taking the case of bow tilting as an example, and combining it with the attached... Figure 1 This can be understood as the bow being pressed down and the stern being raised. (The bow and stern in the attached diagram are only for the corresponding storage tanks; in other cases, the bow and stern can be interchanged or changed.) At this time, the connection between the first gas supply main pipe 31 and the first gas supply branch pipe 32 will be submerged near the bow. This is equivalent to the liquid blocking the air vent of the first gas supply branch pipe 32 in this part. Naturally, gas cannot flow in this part, and pressurized gas supply cannot be provided.

[0085] At this time, although the second gas supply main pipe 41 and the second gas supply branch pipe 42 are also partially submerged, only part of the second gas supply branch pipe 42 is submerged. The connection part of the second gas supply main pipe 41 and the second gas supply branch pipe 42 is still above the liquid surface. Gas can still flow through the unsubmerged part, thus ensuring pressurized gas supply.

[0086] The situation is reversed when the stern is tilted. The connection between the first main gas supply pipe 31 and the first branch gas supply pipe 32 is not submerged, and the gas can flow through the connection without being liquefied, thus achieving pressurized gas supply. The connection between the second main gas supply pipe 41 and the second branch gas supply pipe 42 is submerged, causing the gas to be liquefied and preventing pressurized gas supply. This will not be elaborated here.

[0087] In one embodiment, the first gas supply branch pipe 32 and the second gas supply branch pipe 42 are evenly provided with concave and convex structures, and the first gas supply branch pipe 32 and the second gas supply branch pipe 42 are distinguished by the concave and convex structures into a straight section 600 and a raised section 700.

[0088] The protruding section 700 of each first gas supply branch pipe 32 protrudes in a direction away from the axis of the first gas supply main pipe 31, and the protruding section 700 of each second gas supply branch pipe 42 protrudes in a direction away from the axis of the second gas supply main pipe 41.

[0089] It should be noted that the raised section 700 on the gas supply branch pipe can adjust the distance between the gas supply branch pipe and the liquid surface. When the storage tank is tilted along the axis of the corresponding gas supply main pipe, the distance between the raised section 700 on one side of the gas supply branch pipe and the liquid surface is relatively far, which can ensure that it is not submerged. Therefore, as long as the air hole is only set in the raised section 700, it can be ensured that the gas is not easily liquefied, and this side can continuously pressurize and supply gas, which is beneficial to cope with diverse working environments. If it is a normal straight pipe, no matter where the air hole is placed, as long as one air hole comes into contact with the liquid surface, the gas will be liquefied at that position, which will block the gas flow and affect the pressurized gas supply of this side of the gas supply branch pipe.

[0090] Of course, the vents can be located not only in the raised section 700, but also in the straight section 600. Due to the uniform arrangement of the raised section 700 and the straight section 600, both the first gas supply branch pipe 32 and the second gas supply branch pipe 42 exhibit a curved trajectory. This trajectory corresponds to the trajectory of gas when entering and exiting the storage tank. The curved trajectory expands the range of airflow, making the gas supply more uniform at all locations, and allowing the gas inside the tank to contact the vents on the gas supply branch pipe more quickly.

[0091] In one embodiment, there are two first gas supply branch pipes 32 and two second gas supply branch pipes 42. The two first gas supply branch pipes 32 are fixed to the inner wall of the first storage tank 1 by a plurality of pipe clamps 5, and each pipe clamp 5 is located at the straight section 600 of the corresponding first gas supply branch pipe 32 to avoid the protruding section 700. Similarly, the two second gas supply branch pipes 42 are fixed to the inner wall of the second storage tank 2 by a plurality of pipe clamps 5, and each pipe clamp 5 is located at the straight section 600 of the corresponding second gas supply branch pipe 42 to avoid the protruding section 700.

[0092] It should be noted that although the attached diagram does not show a case where a main gas supply pipe is connected to three, four or more branch gas supply pipes, this does not mean that such a case does not exist. The attached diagram is only an illustration of one implementation and does not represent a limitation on the number of branch gas supply pipes.

[0093] Meanwhile, in this embodiment, pipe clamp 5 is used to fix the gas supply branch pipe. In other embodiments, other fixing parts can also be used for fixing. Technicians can adjust or modify this part according to the situation.

[0094] Based on the above embodiments, a tee pipe is provided at the connection between the first gas supply main pipe 31 and the two first gas supply branch pipes 32, and at the connection between the second gas supply main pipe 41 and the two second gas supply branch pipes 42. The tee pipe is used to divert the gas.

[0095] It should be noted that the tee pipe serves to connect the main gas supply pipe and the branch gas supply pipe, thereby enabling the gas to flow between the main gas supply pipe and the branch gas supply pipe, and can be used in combination with the above embodiments.

[0096] Furthermore, both the first gas supply main pipe 31 and the second gas supply main pipe 41 have a turning section. The turning section is close to the corresponding gas inlet and protrudes towards the bottom of the storage tank. This is used to intercept the liquid mixed in the gas and also to buffer the gas.

[0097] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A dual-tank type booster gas supply device, characterized in that, Suitable for supplying cryogenic liquefied gases, including: A storage tank for storing the cryogenic liquefied gas includes a first storage tank and a second storage tank, wherein the cryogenic liquefied gas forms a first liquid level and a second liquid level relative to the first storage tank and the second storage tank, respectively; the two ends of the storage tank in the length direction are respectively distinguished as a bow end and a stern end, and the first storage tank and the second storage tank are arranged horizontally side by side, so that the bow end and stern end of the first storage tank correspond to the bow end and stern end of the second storage tank; A gas supply pipe, having a gas inlet, is used to input gas into the storage tank or to transport gas from the storage tank to the outside. The gas supply pipe includes a first gas supply pipe and a second gas supply pipe, which are respectively located inside the first storage tank and the second storage tank, and extend along the length of the first storage tank and the second storage tank, respectively. The gas inlet of the first gas supply pipe is close to the bow end of the first storage tank, and the gas inlet of the second gas supply pipe is close to the stern end of the second storage tank. Under natural conditions, the first air supply pipe is located above the first liquid surface, and the second air supply pipe is located above the second liquid surface; In the tilted state, the first air supply pipe and the second air supply pipe are partially submerged below the first liquid surface and the second liquid surface, and the air inlet of one of the air supply pipes is not submerged, thereby enabling the dual-tank type pressurized air supply device to perform pressurized air supply. When the bow of the storage tank is tilted toward the bottom of the storage tank, the air inlet of the first air supply pipe is submerged by the first liquid surface, and the air inlet of the second air supply pipe is located above the second liquid surface. When the stern of the storage tank is tilted toward the bottom of the storage tank, the air inlet of the second air supply pipe is submerged by the second liquid surface, and the air inlet of the first air supply pipe is located above the first liquid surface.

2. The dual-tank type booster gas supply device according to claim 1, characterized in that, The first gas supply pipe includes a first gas supply main pipe and at least two first gas supply branch pipes, and the first gas supply branch pipes are respectively connected to the first gas supply main pipe. The second gas supply pipe includes a second gas supply main pipe and at least two second gas supply branch pipes, and the second gas supply branch pipes are respectively connected to the second gas supply main pipe. The first gas supply branch pipe and the second gas supply branch pipe are used to input gas into the corresponding storage tank for pressurization or to output the gas in the storage tank to the outside.

3. The dual-tank type booster gas supply device according to claim 2, characterized in that, The head end of the first gas supply pipe is located at the bow end of the first storage tank, and the gas inlet of the first gas supply pipe is located on the side of the first gas supply pipe away from the bow end of the first storage tank. The first gas supply main extends from its gas inlet toward the stern of the first storage tank and branches to form corresponding first gas supply branch pipes, which are evenly distributed on both sides of the first gas supply main.

4. The dual-tank type booster gas supply device according to claim 2, characterized in that, The two ends of the second gas supply pipe extend to the bow and stern of the second storage tank, respectively, and the gas inlet of the second gas supply pipe is located on the side of the second gas supply pipe away from the bow of the second storage tank. Furthermore, the second main gas supply pipe extends from its air inlet toward the bow to form a branch, thereby forming a corresponding second branch gas supply pipe, which is evenly distributed on both sides of the second main gas supply pipe.

5. A dual-tank type booster gas supply device according to claim 2, characterized in that, The first and second air supply branches are evenly provided with concave and convex structures, and the first and second air supply branches are distinguished into straight sections and convex sections by the concave and convex structures. The protruding section of each of the first gas supply branches protrudes in a direction away from the axis of the first gas supply main, and the protruding section of each of the second gas supply branches protrudes in a direction away from the axis of the second gas supply main.

6. A dual-tank type booster gas supply device according to claim 5, characterized in that, There are two first gas supply branches. The two first gas supply branches are fixed to the inner wall of the first storage tank by several pipe clamps, and each pipe clamp is located on the straight section of the corresponding first gas supply branch to avoid the protruding section. There are two second gas supply branches. The two second gas supply branches are fixed to the inner wall of the second storage tank by several pipe clamps, and each pipe clamp is located on the straight section of the corresponding second gas supply branch to avoid the protruding section.

7. A dual-tank type booster gas supply device according to claim 6, characterized in that, The connection between the first gas supply main pipe and the two first gas supply branch pipes, as well as the connection between the second gas supply main pipe and the two second gas supply branch pipes, are each provided with a tee pipe, which is used to split the gas flow.

8. A dual-tank type booster gas supply device according to any one of claims 2-7, characterized in that, Each of the first and second gas supply branches is provided with several air holes along the axial direction to allow gas to flow through the air holes. When the storage tank is tilted about its length axis, at least one of the first gas supply branches is above the first liquid level and at least one of the second gas supply branches is above the second liquid level, thereby enabling the corresponding first and second gas supply branches to achieve gas flow through the air holes for simultaneous pressurization and gas supply to both tanks.

9. A dual-tank type booster gas supply device according to claim 8, characterized in that, Both the first and second gas supply main pipes have a bend section, which is close to the corresponding gas inlet and protrudes towards the bottom of the storage tank to intercept liquid mixed in the gas.

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