Delivery tank with pressure-reduction, saturation and desaturation features

Abstract

To provide a transportable cryogenic liquid delivery tank for liquefied natural gas storage and associated fueling and defueling of liquefied natural gas vehicle tanks.SOLUTION: A cryogenic delivery tank includes a vessel having inner and outer shells, and an interior that may contain a cryogenic liquid with a headspace above. A transfer pipe passes through the interior of the vessel and includes a head space coil positioned within an upper portion of the interior, and a liquid side coil positioned in a lower portion of the interior. The transfer pipe has a first port adjacent to the head space coil, and a second port adjacent to the liquid side coil. The first and second ports of the transfer pipe are configured to be removably attached to a second tank.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001]

[0001] (Claim of Priority) This application claims the benefit of U.S. Provisional Patent Application No. 62 / 983,901, filed Mar. 2, 2020, the content of which is hereby incorporated by reference.

[0002]

[0002] This disclosure generally relates to cryogenic tanks for injecting or withdrawing cryogenic fuel into or from an on-vehicle vehicle tank or other use device, and more particularly to cryogenic delivery tanks for injecting or withdrawing liquefied natural gas.

Background Art

[0003]

[0003] Natural gas is useful as an alternative fuel source for powering vehicle engines. It is typically stored and transported as liquefied natural gas (LNG) because liquefied natural gas occupies a much smaller volume (about 1 / 600 of the gaseous state). The regulation of the temperature and pressure of liquefied natural gas is extremely important. Liquefied natural gas is stored in an insulated cryogenic tank that requires a low temperature (~ -160 °C) and is typically stored at low pressure. Also, the cryogenic liquid to be stored is typically saturated so that the gaseous and liquid states coexist at the desired temperature and pressure.

[0004]

[0004] Vehicles that utilize natural gas typically include an on-vehicle vehicle tank. The on-vehicle vehicle tank may have its own pressure and temperature requirements. During the injection and withdrawal of liquefied natural gas from the on-vehicle vehicle tank, depressurization to cool the vapor space of the liquefied natural gas delivery tank or an increase in the saturation pressure of the liquefied natural gas is typically required. Therefore, the fuel injection of these vehicle tanks can sometimes be a complex process.

[0005]

[0005] As shown in FIG. 1, prior art systems for controlling the conditions of a cryogenic delivery tank utilize a cryogenic tank 50 having two additional tanks, namely cryogenic liquid 51 and vapor 52, and a high-pressure cylinder 40 for containing cryogenic vapor. The cryogenic liquid 51 may comprise liquid nitrogen. The vapor within the cylinder 40 may comprise natural gas. The delivery tank, indicated generally by reference numeral 10, includes an inner shell 30 and an outer shell 20. The delivery tank 10 contains cryogenic liquid 11 and vapor 12. The cryogenic tank 50 is permanently connected to a first coil 70 by a delivery line 52 which is installed in the vapor space or head space of the delivery tank 10. The delivery line 52 includes a valve or other known means, indicated generally by reference numeral 53, for regulating the liquid input from the tank 50. The high-pressure cylinder 40 is permanently connected to a second coil 80 by a delivery line 42 which is soldered to the inner surface of the outer shell of the delivery pump 10. The second delivery line 42 includes a valve or other known means, indicated generally by reference numeral 43, for regulating the gas input from the tank 40.

[0006]

[0006] The depressurization within the delivery tank 10 of FIG. 1 is achieved by introducing liquefied nitrogen 51 from the tank 50 through the coiled tube 70 within the delivery tank. This condenses a portion of the vapor 12 and reduces the pressure within the tank. The liquefied nitrogen is converted to cold nitrogen gas and exits out through the second end of the coiled tube 70 from the top of the delivery tank and is discharged through the vent 71.

[0007]

[0007] Saturation is achieved by introducing natural gas from the tank 40 into the delivery tank through the second coil 80. The natural gas from the tank 40 travels through the coil 80 and is heated by heat transfer from the atmosphere through the outer shell 20 and the coil 80. The heated natural gas is sent to the bottom of the delivery tank 10 and warms the liquid while creating bubbles in the liquid. In the present system, desaturation is only possible by depressurizing the entire delivery tank. This is either by degassing the methane vapor 12 into the atmosphere or by burning the methane vapor.

[0008]

[0008] The above system utilizes two additional tanks and line connections between each of the additional tanks and the delivery tank. The processes for pressure reduction, for increasing the saturation, and for decreasing the saturation are complex.

Prior Art Documents

Patent Documents

[0009]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0010]

[0009] It is desirable to provide a transportable cryogenic liquid delivery tank to provide a simple and convenient solution for the storage of liquefied natural gas and for the fuel injection and fuel extraction of the associated liquefied natural gas vehicle tanks.

Means for Solving the Problems

[0011]

[0010] Some aspects of the present subject matter can be embodied separately or together in the methods, devices, and systems described and claimed below. These aspects may be employed alone or in combination with other aspects of the subject matter described herein, and describing these aspects together is not intended to exclude the use of these aspects separately or to exclude claiming these aspects in different combinations than those shown in the appended claims.

[0012]

[0011] In one aspect, a cryogenic liquid delivery tank includes a container having an inner shell and an outer shell. The inner shell of the container defines an interior configured to contain cryogenic liquid with a headspace above the cryogenic liquid. The delivery tank has a transfer pipe passing through the interior of the container and including a headspace coil positioned within an upper portion of the interior of the container and a liquid-side coil positioned within a lower portion of the interior of the container. The transfer pipe has a first port adjacent to the headspace coil and a second port adjacent to the liquid-side coil. The first port and the second port of the transfer pipe are configured to be removably attached to a second tank.

[0013]

[0012] In another aspect, a cryogenic delivery tank system includes a first cryogenic liquid delivery tank including a container having an inner shell and an outer shell. The inner shell of the container defines an interior configured to contain cryogenic liquid with a headspace above the cryogenic liquid. The delivery tank has a transfer pipe passing through the interior of the container and including a headspace coil positioned within an upper portion of the interior of the container and a liquid-side coil positioned within a lower portion of the interior of the container. The transfer pipe has a first port adjacent to the headspace coil and a second port adjacent to the liquid-side coil. The cryogenic liquid delivery tank further includes a second cryogenic tank. The second cryogenic tank has a second tank interior configured to hold a second cryogenic liquid with a second headspace above the second cryogenic liquid. The second cryogenic tank has a gas outlet pipe and a liquid outlet pipe. The gas outlet pipe is in fluid communication with the uppermost portion of the second tank interior and is configured to be removably connected to the second port. The liquid outlet pipe is in fluid communication with the lowermost portion of the second tank interior and is configured to be removably connected to the first port and / or the second port of the transfer pipe.

[0014]

[0013] In a further aspect, a method for regulating the pressure of a first cryogenic liquid stored in a delivery tank includes providing a transfer pipe inside a container. The transfer pipe includes a headspace coil positioned within an upper portion of the interior and a liquid-side coil positioned within a lower portion of the interior. A second cryogenic liquid is directed from a second tank first through the headspace coil and then through the liquid-side coil, or from the second tank first through the liquid-side coil and then through the headspace coil. Alternatively, gas is directed from the second tank through the liquid-side coil and then through the headspace coil, resulting in the generation of exhaust gas. The exhaust gas is then degassed.

[0015]

[0014] In another aspect, a cryogenic liquid delivery tank system includes a first cryogenic liquid delivery tank including a container having an inner shell and an outer shell. The inner shell of the container defines an interior configured to contain cryogenic liquid with a headspace above the cryogenic liquid. The delivery tank has a transfer pipe passing through the interior of the container and including a headspace coil positioned within an upper portion of the interior of the container and a liquid-side coil positioned within a lower portion of the interior of the container. The transfer pipe has a first port adjacent to the headspace coil and a second port adjacent to the liquid-side coil. The cryogenic liquid delivery tank further includes a second tank. The second tank has a second tank interior configured to hold gas. The second tank has a gas outlet pipe. The gas outlet pipe is in fluid communication with the second tank interior and is configured to be removably connected to the second port.

Brief Description of the Drawings

[0016]

Figure 1

[0015] It is a schematic diagram of a conventional cryogenic liquid delivery tank system.

Figure 2

[0016] It is a schematic diagram of one embodiment of the delivery tank of the present disclosure.

Figure 3

[0017] It is a schematic diagram of one embodiment of the delivery tank system of the present disclosure.

Figure 4

[0018] It is a schematic diagram of the decompression operation of the present disclosure.

Figure 5

[0019] It is a schematic diagram of the saturation operation of the present disclosure.

Figure 6

[0020] It is a schematic diagram of the desaturation operation of the present disclosure.

Figure 7

[0021] It is a schematic diagram of another embodiment of the delivery tank of the present disclosure.

Mode for Carrying Out the Invention

[0017]

[0022] One embodiment of the disclosure provides a delivery tank having a dual-coil type transfer pipe, eliminating the need for separate first and second coil transfer pipe structures. One embodiment of the disclosure further eliminates the need for a second tank containing natural gas to adjust pressure and saturation.

[0018]

[0023] FIG. 2 illustrates the cryogenic delivery tank 100 of the present disclosure. The cryogenic tank 100 is employed to store cryogenic liquids. For example, the cryogenic liquid can be at least one of nitrogen, helium, neon, argon, krypton, carbon dioxide, hydrogen, liquefied natural gas, and oxygen, although other types of gases are also within the scope of this disclosure. In one preferred embodiment, the cryogenic delivery tank 100 is used to store and deliver liquefied natural gas.

[0019]

[0024] In the illustrated embodiment, the delivery tank 100 has an inner shell 300 and an outer shell 200, and the inner shell defines the interior of the tank. Inside the inner shell 300, a cryogenic liquid 101 is stored. The cryogenic liquid 101 occupies a specific volume of the delivery tank 100, and the remaining volume is occupied by a cryogenic gas or vapor 102. A liquid level 103 is included for illustrative purposes, although the liquid level can vary particularly at the time of each event (LNG delivery, LNG intake).

[0020]

[0025] The delivery tank 100 has a dual coil type transfer pipe 110 installed inside the inner shell 300 of the delivery tank. The dual coil type transfer pipe 110 may be installed by any technically known method. As shown in FIG. 2, in the illustrated embodiment, the transfer pipe 110 includes two coiled sections forming a headspace coil 111 and a liquid side coil 112. In different embodiments, the transfer pipe 110 may include more than two or less than two coiled sections. The coiled sections 111 and 112 are inside the cryogenic delivery tank. The coiled sections 111 and 112 may utilize any technically known coil shape. The coiled section 111 and the coiled section 112 can be installed in different parts of the inner shell 300 of the delivery tank 100. As illustrated in FIG. 2, the coiled section 112 is at the uppermost part of the container and is at least partially within the cryogenic gas 102 section, while the coiled section 111 is at the lowermost part of the container and is at least partially within the cryogenic liquid 101 section. The dual coil type transfer pipe 110 has a first pipe port 601 and a second pipe port 602 at the other end. The first pipe port 601 and the second pipe port 602 can be installed along different surfaces of the delivery tank 100. In a preferred embodiment, the first pipe port 601 is at the uppermost part of the delivery tank, and the second pipe port 602 is installed on one side surface of the delivery tank. Both pipe ports can be outside the delivery tank 100. Both pipe ports may further be flush with the edge of the container or partially within the container. Both pipe ports depicted in FIG. 2 are accessible outside the container of the delivery tank 100. Although specific details are not shown in the figure, both pipe ports (601 and 602) can be characterized by a number of specific fittings. For example, they may be provided with a removable and reusable seal for each other. Further, each outlet may include a valve or a degassing port. The cross-section of this pipe and other structures can have various shapes such as circular, elliptical, square, triangular, pentagonal, hexagonal, polygonal, or other shapes.

[0021]

[0026] The dual coil type transfer pipe 110 has a first pipe port 601 and a second pipe port 602 at the other end. The first pipe port 601 and the second pipe port 602 can be installed along different surfaces of the delivery tank 100. In a preferred embodiment, the first pipe port 601 is at the uppermost part of the delivery tank, and the second pipe port 602 is installed on one side surface of the delivery tank. Both pipe ports can be outside the delivery tank 100. Both pipe ports may further be flush with the edge of the container or partially within the container. Both pipe ports depicted in FIG. 2 are accessible outside the container of the delivery tank 100. Although specific details are not shown in the figure, both pipe ports (601 and 602) can be characterized by a number of specific fittings. For example, they may be provided with a removable and reusable seal for each other. Further, each outlet may include a valve or a degassing port. The cross-section of this pipe and other structures can have various shapes such as circular, elliptical, square, triangular, pentagonal, hexagonal, polygonal, or other shapes.

[0022]

[0027] Each of the coiled sections 111 and 112 may be closely proximate to or adjacent to the first tube port 601 and the second tube port 602. In the illustrated embodiment, the first coiled section 111 is adjacent to the first tube port 601, and the coiled section 112 is adjacent to the second tube port 602.

[0023]

[0028] In the illustrated embodiment, the cryogenic delivery tank 100 is a vertical tank. In other embodiments, the tank 100 may be a horizontal tank.

[0024]

[0029] The cryogenic delivery tank 100 of the present invention is shown as being surrounded by a double wall, but may also be surrounded by a single wall or a triple wall. The cryogenic tank can be made from a copper alloy, nickel alloy, carbon, stainless steel, or any other material known in the art.

[0025]

[0030] The cryogenic delivery tank 100 may have an insulating material between the inner wall (inner shell) and the outer wall (outer shell), and / or may be vacuum-insulated. A single-layer or multi-layer insulating material of any known material for insulation can also be utilized.

[0026]

[0031] The inner container 300 can be joined to the outer container 200 by one or more inner container support members. For example, as is known in the art, the inner container support members may connect the neck and base of the inner container to the outer container.

[0027]

[0032] The cryogenic tank 100 may include devices or gauges for reading different characteristics of the tank. These devices or gauges may be adapted to indicate pressure, temperature, differential pressure, liquid level, etc.

[0028]

[0033] In the embodiment of FIG. 2 or any other embodiment of the present disclosure, the delivery tank 100 includes at least one pipe for filling with liquefied natural gas or recovering from a liquefied natural gas tank. In one embodiment, a separate filling pipe and a separate recovery pipe are provided. Similarly, there may be other paths out of the inner container for filling or removing liquid. The filling pipe and the recovery pipe may be any suitable conduit for carrying or allowing fluid flow therethrough.

[0029]

[0034] FIG. 3 depicts an embodiment of the cryogenic delivery tank system of the present disclosure. In the illustrated embodiment, a second tank is presented for connection to the cryogenic delivery tank 100. In one embodiment, the second tank is a cryogenic tank. The cryogenic tank 500 has a gas outlet pipe 520 and a liquid outlet pipe 510, and includes a dip tube above the liquid outlet pipe. Although shown separately in the figure, alternatively both outlet portions may be combined into one head from the tank 500. The outlet pipe 520 and the outlet pipe 510 can be connected to the first pipe port 601 and the second pipe port 602 of the dual-coil type transfer pipe 110 of the delivery tank 100. The pipe outlet portion of the cryogenic tank 500 may be connected to either pipe port of the dual-coil type transfer pipe 110 by a flexible hose. Although a flexible hose is a preferred connecting means, the pipes of each tank may be connected by any other known connecting means including, but not limited to, insulated piping. The connecting means can be permanent or temporary and may consist of any piping, tube, hose, or suitable conduit. In addition, the pipe outlet portion of the cryogenic tank 500 can be selectively connected to the ports 601 and 602 by a line including one or more valves 511 and 521 that direct the fluid from the tank 500 to either port 601 or 602 of the tank 100 according to the configuration described below.

[0030]

[0035] The second cryogenic tank 500 has an inner shell 600 and an outer shell 700. A cryogenic liquid 501 is stored within the inner shell 600. The cryogenic liquid occupies a specific volume of the cryogenic tank 500, and the remaining volume is occupied by a cryogenic gas or vapor 502. Although a liquid level is included in the figure for illustrative purposes, the liquid can vary, particularly during each event (such as the delivery of the cryogenic liquid or cryogenic gas).

[0031]

[0036] In the illustrated embodiment, the second cryogenic tank 500 is a vertical storage tank. In other embodiments, the storage tank 500 may be a horizontal storage tank.

[0032]

[0037] The cryogenic delivery tank 500 of the present invention is shown as being surrounded by a double wall, but may also be surrounded by a single wall or a triple wall. The cryogenic tank can be made from a copper alloy, nickel alloy, carbon, stainless steel, or any other material known in the art.

[0033]

[0038] The cryogenic tank 500 may also include devices or gauges for reading different characteristics of the tank. These devices or gauges may be configured to indicate pressure, temperature, differential pressure, liquid level, and the like.

[0034]

[0039] In another embodiment, the second tank may be a gas tank. It may be a high-pressure gas tank. The high-pressure gas may be nitrogen. In this embodiment, the second tank is filled with gas and does not contain liquid. The second tank has a gas outlet pipe. The gas outlet pipe can be connected to the first pipe port 601 and the second pipe port 602 of the dual-coil type transfer pipe 110 of the delivery tank 100. The pipe outlet portion of the gas tank may be connected to either pipe port of the dual-coil type transfer pipe 110 by a flexible hose. Although a flexible hose is a preferred connection means, the pipes of each tank may be connected by any other known connection means, including but not limited to insulated piping. The connection means may be permanent or temporary can be any pipe, tube, hose, or suitable conduit. Additionally, the outlet of the gas tank can be selectively connected to ports 601 and 602 by a line that includes one or more valves that direct the gas from the tank to either port 601 or 602 of tank 100 according to the configuration described below.

[0035]

[0040] Figure 4 depicts a depressurization configuration of the cryogenic delivery tank system of the present disclosure, generally designated by reference numeral 801. When it is necessary to reduce the tank pressure in delivery tank 100, the operator connects the liquid outlet 510 of cryogenic tank 500 to the first tube port 601 of dual coil type transfer tube 110 to delivery tank 100. As indicated by the arrow in Figure 4, the cryogenic liquid from tank 500 passes through transfer tube 110 in delivery tank 100 from the first tube port 601 to the second tube port 602. The cryogenic liquid from tank 500 will cause condensation of gas 102 while within the coiled section 111, reducing the pressure within the delivery tank. As it continues to proceed through transfer tube 100, the liquid changes state to a gas and exits tube port 602 as a gas.

[0036]

[0041] Figure 5 depicts a saturation configuration of the cryogenic delivery tank system of the present disclosure, generally designated by reference numeral 802. When it is necessary to increase the saturation pressure of cryogenic liquid 101, the operator connects the gas outlet tube 520 of cryogenic tank 500 to tube port 602 of dual coil type transfer tube 110 of delivery tank 100. As indicated by the arrow in Figure 5, warm gas 502 passes through dual coil type transfer tube 110 from the second tube port 602 to the first tube port 601 and is released as a colder gas. The warm gas warms cryogenic liquid 101 while within the coiled section 112, increasing the temperature and thus the saturation pressure of the cryogenic liquid.

[0037]

[0042] Saturation can also be achieved when the second tank is a gas tank. When it is necessary to increase the saturation pressure of the cryogenic liquid 101, the operator connects the gas outlet pipe 520 of the gas tank to the pipe port 602 of the dual-coil type transfer pipe 110 of the delivery tank 100. Warm gas passes through the dual-coil type transfer pipe 110 from the second pipe port 602 to the first pipe port 601 and is released as a cooler gas. The warm gas warms the cryogenic liquid 101 while it is within the coiled section 112, increasing the temperature and thus the saturation pressure of the cryogenic liquid.

[0038]

[0043] Figure 6 depicts a desaturation configuration, indicated generally at 803, of the disclosed cryogenic delivery tank system. When it is necessary to decrease the saturation pressure of the cryogenic liquid, the liquid outlet pipe 510 of the cryogenic tank 500 is connected to the second pipe port 602 of the dual-coil type transfer pipe 110 of the cryogenic delivery tank 10. As indicated by the arrows in Figure 6, cold cryogenic liquid 501 is passed through the dual-coil type transfer pipe 110 from the second pipe port 602 to the first pipe port 601. The cold liquid 501 cools the cryogenic liquid 101 and exits the first pipe port 601 as a cold gas. The saturation pressure of the cryogenic liquid decreases.

[0039]

[0044] Figure 7 depicts an additional embodiment of the presently disclosed cryogenic delivery tank 104. The cryogenic tank 104 is employed for storing cryogenic liquid. For example, the cryogenic liquid can be at least one of nitrogen, helium, neon, argon, krypton, carbon dioxide, hydrogen, liquefied natural gas, and oxygen, although other types of gases are also within the scope of this disclosure. In one preferred embodiment, the cryogenic delivery tank 100 is used for storing and delivering liquefied natural gas.

[0040]

[0045] In the illustrated embodiment, the delivery tank 104 has an inner shell 300 and an outer shell 200, and the inner shell defines the interior of the tank. Inside the inner shell 300 The cryogenic liquid 101 is stored. The cryogenic liquid 101 occupies a specific volume of the delivery tank 104, and the remaining volume is occupied by the cryogenic gas or vapor 102. For illustrative purposes, a liquid level 103 is included, but the liquid level can vary, particularly at the time of each event (LNG delivery, LNG intake).

[0041]

[0046] The delivery tank 104 has two transfer pipes 113 and 114 installed within the inner shell 300 of the delivery tank. The transfer pipes 113 and 114 may be installed in any technically known manner. As shown in FIG. 7, in the illustrated embodiment, the first transfer pipe 113 includes a coiled section 111 that forms a headspace coil. The second transfer pipe 114 includes a coiled section 112. The coiled sections 111 and 112 are within the interior of the cryogenic delivery tank. The coiled sections 111 and 112 may utilize any technically known coil shape. As illustrated in FIG. 7, the coiled section 112 is at the uppermost part of the container and is at least partially within the section of the cryogenic gas 102, while the coiled section 111 is at the lowermost part of the container and is at least partially within the section of the cryogenic liquid 101.

[0042]

[0047] The transfer pipe 113 has a first pipe port 604 and a second pipe port 607 at the other end. The transfer pipe 114 has a first pipe port 605 and a second pipe port 606 at the other end. The pipe ports 604, 605, 606, and 607 can be installed along different surfaces of the delivery tank 104. In a preferred embodiment, the first pipe ports 604 and 605 are at the top of the delivery tank, and the second pipe ports 606 and 607 are installed on one side surface of the delivery tank. These pipe ports can be outside the delivery tank 104. The pipe ports may further be flush with the edge of the container or partially inside the container. As depicted in FIG. 7, these pipe ports are accessible outside the container of the delivery tank 104. Although specific details are not shown in the figure, the pipe ports (604, 605, 606, and 607) can be characterized by a number of specific fittings. For example, they may be provided with removable and reusable seals for each other. Further, each port may include a valve or a degassing port. The cross-sections of this pipe and other structures can have various shapes, such as circular, elliptical, square, triangular, pentagonal, hexagonal, polygonal, or other shapes.

[0043]

[0048] Each of the coiled sections 111 and 112 may be closely proximate to or adjacent to the pipe ports 604, 605, 606, and 607. In the illustrated embodiment, the first coiled section 111 is adjacent to the first pipe ports 604 and 605, and the coiled section 112 is adjacent to the second pipe ports 606 and 607.

[0044]

[0049] In the illustrated embodiment, the cryogenic delivery tank 104 is a vertical tank. In other embodiments, the tank 104 may be a horizontal tank.

[0045]

[0050] The cryogenic delivery tank 104 of the present invention is shown as being surrounded by a double wall, but it may also be surrounded by a single wall or a triple wall. The cryogenic tank can be made of a copper alloy, a nickel alloy, carbon, stainless steel, or any other material known in the art.

[0046]

[0051] The cryogenic delivery tank 104 may have an insulating material between an inner wall (inner shell) and an outer wall (outer shell), and / or may be vacuum-insulated. A single-layer or multi-layer insulating material of any known material for insulation can also be used.

[0047]

[0052] The inner container 300 can be joined to the outer container 200 by one or more inner container support members. For example, as is technically known, the inner container support member may connect the neck and base of the inner container to the outer container.

[0048]

[0053] The cryogenic tank 104 may include a device or gauge for reading different characteristics of the tank. These devices or gauges may be configured to indicate pressure, temperature, differential pressure, liquid level, and the like.

[0049]

[0054] In the embodiment of FIG. 7 or other embodiments of the present disclosure, the delivery tank 104 includes at least one tube for filling with liquefied natural gas or recovering from a liquefied natural gas tank. In one embodiment, a separate filling tube and a separate recovery tube are provided. Similarly, there may be other paths out of the inner container for filling and removing the liquid. The filling tube and the recovery tube may be any suitable conduit for carrying or allowing the flow of fluid therethrough.

[0050]

[0055] Although preferred embodiments of the disclosure have been shown and described, as will be apparent to those skilled in the art, there is room for change and modification without departing from the spirit of the disclosure, and the scope thereof is defined by the accompanying claims.

[0051] 100 Cryogenic delivery tank 101 Cryogenic liquid 102 Cryogenic gas or vapor 103 Liquid level 104 Cryogenic delivery tank 110 Dual-coil type transfer pipe 111 Headspace coil 112 Liquid-side coil 113 First transfer pipe 114 Second transfer pipe 200 Outer shell 300 Inner shell 500 Cryogenic tank 501 Cryogenic liquid 502 Gas or vapor 510 Liquid outlet pipe 511 Valve 520 Gas outlet pipe 521 Valve 600 Inner shell 601, 604, 605 First pipe port 602, 606, 607 Second pipe port 700 Outer shell 801 Vacuum configuration 802 Saturated configuration 803 Desaturated configuration

Claims

1. a container comprising an inner shell and an outer shell, the inner shell defining an interior configured to contain a cryogenic liquid with a headspace above the cryogenic liquid; a transfer tube passing through the interior of the vessel, the transfer tube including a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in a lower portion of the interior; a transfer tube having a first port adjacent to the head space coil and a second port adjacent to the liquid side coil; 1. A cryogenic liquid delivery tank comprising: The first port and the second port of the transfer tube are configured to be removably attached to a second tank.

2. 2. The delivery tank of claim 1, wherein the first port is located on or extends from a top portion of the outer shell and the second port is located on or extends from a side of the outer shell.

3. 3. The delivery tank of claim 2, wherein the second port is located at or extends from a lowermost portion of the side of the outer shell.

4. 10. The cryogenic liquid delivery tank of claim 1, wherein the cryogenic liquid is liquefied natural gas.

5. The cryogenic liquid delivery tank of claim 1 , wherein a single coil includes the headspace coil and the liquid side coil.

6. 2. The cryogenic liquid delivery tank of claim 1, wherein the headspace coil is separate and spaced from the liquid side coil but in fluid communication with the liquid side coil.

7. a vessel comprising an inner shell and an outer shell, the inner shell defining an interior configured to contain a first cryogenic liquid with a first cryogenic liquid headspace above the first cryogenic liquid; a transfer tube passing through the interior of the vessel, the transfer tube including a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in a lower portion of the interior; a transfer tube having a first port adjacent to the head space coil and a second port adjacent to the liquid side coil; a second cryogenic tank, a second tank interior configured to hold a second cryogenic liquid with a second headspace above the second cryogenic liquid; a gas outlet tube in fluid communication with a top portion of the second tank interior and configured to removably connect to the second port; and a second cryogenic tank including a liquid outlet tube in fluid communication with a lowermost portion of the second tank interior and configured to removably connect to the first port and / or the second port; Cryogenic liquid delivery tank system comprising:

8. 8. The cryogenic liquid delivery system of claim 7, wherein the second cryogenic liquid is the same as the first cryogenic liquid.

9. 8. The cryogenic liquid delivery system of claim 7, wherein the second cryogenic liquid is different from the first cryogenic liquid.

10. 8. The cryogenic liquid delivery tank system of claim 7, wherein the first cryogenic liquid is liquefied natural gas.

11. 8. The cryogenic liquid delivery tank system of claim 7, wherein the second cryogenic liquid is liquid nitrogen and the second gas is nitrogen.

12. 8. The cryogenic liquid delivery tank system of claim 7, further comprising one or more flexible hoses configured to removably connect the gas outlet tube to the second port and the liquid outlet tube to the first port and / or the second port.

13. 8. The cryogenic liquid delivery tank system of claim 7, further comprising a plurality of lines including one or more valves configured to selectively connect the gas outlet tube to the second port and the liquid outlet tube to the first port and / or the second port.

14. 1. A method of regulating a pressure of a first cryogenic liquid stored in a delivery tank, comprising: providing within the interior of the vessel a transfer tube including a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in a lower portion of the interior; conducting a second cryogenic liquid from a second tank first through the head space coil and then through the liquid side coil, or conducting a cryogenic liquid from the second tank first through the liquid side coil and then through the head space coil, or conducting a gas from the second tank first through the liquid side coil and then through the head space coil, resulting in the generation of exhaust gas; degassing the exhaust gas; A method for providing the same.

15. The method of claim 14 , wherein the first cryogenic liquid is different from the second cryogenic liquid.

16. 15. The method of claim 14, wherein the first cryogenic liquid is the same as the second cryogenic liquid.

17. The method of claim 14 , wherein the pressure of the first cryogenic liquid is reduced.

18. The method of claim 14 , wherein the saturation pressure of the first cryogenic liquid is increased.

19. The method of claim 14 , wherein the saturation pressure of the second cryogenic liquid is reduced.

20. a vessel comprising an inner shell and an outer shell, the inner shell defining an interior configured to contain a first cryogenic liquid with a first cryogenic liquid headspace above the first cryogenic liquid; a transfer tube passing through the interior of the vessel, the transfer tube including a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in a lower portion of the interior; a transfer tube having a first port adjacent to the head space coil and a second port adjacent to the liquid side coil; a second tank, a second tank interior configured to hold a gas; a second tank including a gas outlet tube in fluid communication with an interior of the second tank and configured to removably connect to the second port; 1. A cryogenic liquid delivery tank system comprising:

Images