Separating valve for cryogenic fluid tank

Abstract

A separating valve for a cryogenic fluid tank is disclosed. The separation valve includes a first valve, a second valve, and a separation assembly. The first valve defines a through bore. The second valve defines a counter bore having a primary bore and a secondary bore. The separation assembly is configured to secure the first valve to the second valve. The separation assembly includes a bushing, a pin, and one or more nuts. The bushing extends through the through bore, is fixedly coupled to the first valve, and is received by the primary bore of the counterbore. The pin extends through the bushing and the through bore and is fixedly received by the primary bore of the countersink. The one or more nuts hold the pin in place. When at least a predefined tensile force is applied, the pin breaks to decouple the first valve from the second valve.

Description

[0001] Cross-reference of related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 605,922, filed December 4, 2023, and U.S. Provisional Application No. 63 / 514,254, filed July 18, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure generally relates to cryogenic fluid tanks, and more specifically, to separation valves for cryogenic fluid tanks. Background Technology

[0004] Cryogenic fluids (such as liquid hydrogen) have been used as fuel for machines (such as vehicles). Typically, cryogenic fluids are initially stored in storage tanks. They are then transferred from the storage tanks to another storage tank in the machine via dedicated nozzles, inlets, and / or hoses, where they are subsequently used as fuel.

[0005] In some examples, the nozzle is connected to a hose that extends from and is fluidly connected to a storage tank at a filling station for a cryogenic fluid (e.g., liquid hydrogen). A corresponding receiving port is connected to the filling tank of a vehicle that will subsequently transport the liquid hydrogen to another location. To complete the filling sequence, the operator connects the nozzle to the receiving port to allow liquid hydrogen to flow from the storage tank at the filling station into the filling tank of the vehicle. After the filling sequence is complete, the operator disconnects the nozzle from the receiving port. Sometimes, the operator may forget to disconnect the nozzle from the receiving port after filling the tank and drive the vehicle away from the filling station while the nozzle is still attached to the receiving port. In such examples, as the vehicle is pulled away from the filling station, the hose may be pulled out of the storage tank, potentially causing cryogenic fluid to spill from the storage tank and / or damaging the filling station. Summary of the Invention

[0006] An example of a separation valve is used to dispense cryogenic fluid between a cryogenic tank and a nozzle. The separation valve includes a first valve. The first valve includes a first valve body. The first valve body includes a first flange defining a first surface and a through-hole extending to the first surface. The separation valve includes a second valve. The second valve includes a second valve body. The second valve body includes a second flange defining a second surface and a countersunk hole having a main hole along the second surface and a countersunk hole. The separation valve includes a separation assembly. The separation assembly is configured to secure the first surface of the first valve to the second surface of the second valve. The separation assembly includes a bushing extending through the through-hole, fixedly coupled to the first flange, and received by the main hole of the countersunk hole. The separation assembly includes a pin extending through the bushing and the through-hole and fixedly received by the main hole of the countersunk hole. The separation assembly includes one or more nuts that hold the pin in place. The pin is configured to break upon application of at least a predefined tensile force to pull the first valve away from the second valve, thereby decoupling the first valve from the second valve.

[0007] An example of a separation assembly is used for a separation valve for dispensing cryogenic fluid between a cryogenic tank and a nozzle. The separation assembly includes a bushing configured to extend through a through-hole of a first valve of the separation valve, be fixedly coupled to the first valve, and be received by a main bore of a countersunk hole of a second valve of the separation valve. The separation assembly includes a pin configured to extend through the bushing and the through-hole of the first valve and be fixedly received by a main bore of the countersunk hole of the second valve. The separation assembly includes one or more nuts configured to hold the pin in place to secure the first valve to the second valve. The pin is configured to break upon application of at least a predefined tensile force to pull the first valve away from the second valve, thereby decoupling the first valve from the second valve. Attached Figure Description

[0008] Figure 1 This document describes an example system for filling a filling tank with a cryogenic fluid, as taught in this article.

[0009] Figure 2 It is based on the teachings in this article. Figure 1 A perspective view of an example of a system's separation valve.

[0010] Figure 3 yes Figure 2 The side cross-section of the nozzle side valve of the separation valve.

[0011] Figure 4 yes Figure 2 The side cross-section of the tank-side valve of the separation valve.

[0012] Figure 5 yes Figure 2 The side cross-section of the sleeve assembly of the separation valve.

[0013] Figure 6 Is Figure 3 Nozzle side valve and Figure 4 When the tank-side valves are coupled together Figure 2 A side cross-sectional view of the separation valve.

[0014] Figure 7 It is a further description Figure 2 The flow control assembly of the separation valve Figure 6 A detailed view of a portion of the content.

[0015] Figure 8 It is a further description Figure 2 The separation assembly of the separation valve Figure 6 A detailed view of a portion of the content.

[0016] Figure 9 yes Figure 8 A side cross-sectional view of the pin of the separable assembly.

[0017] Figure 10 yes Figure 8 A side cross-sectional view of the bushing of the separate assembly.

[0018] Figure 11 yes Figure 8 A side cross-sectional view of the cap of the separate assembly.

[0019] Figure 12 Is Figure 3 Nozzle side valve and Figure 4 After the tank-side valves are decoupled from each other Figure 2 A side cross-sectional view of the separation valve. Detailed Implementation

[0020] The following description describes, illustrates, and exemplifies one or more embodiments of the invention based on the principles of the invention. This description is not intended to limit the invention to the embodiments described herein, but rather to explain and teach the principles of the invention so that those skilled in the art can understand these principles and, upon understanding, apply them not only to the embodiments described herein but also to other embodiments conceived based on these principles. This specification is intended to be considered holistically and interpreted according to the principles of the invention as taught herein and understood by those skilled in the art.

[0021] The scope of this invention is intended to cover all such embodiments that may fall within the scope of the appended claims, both literally and under the principle of equivalence. The description of illustrative embodiments is not intended to limit the claims or the claimed invention. Features described in the specification but not listed in the claims are not intended to limit the claims.

[0022] It should be noted that similar or substantially similar elements may be labeled with the same reference numerals in the descriptions and figures. However, sometimes these elements may be labeled with different numerals, for example, where such labeling facilitates a clearer description. Furthermore, the figures illustrated herein are not necessarily drawn to scale, and in some instances, the scale may be exaggerated to depict certain features more clearly. Such labeling and drawing practices do not necessarily imply any underlying substantive purpose.

[0023] Some features may be described using relative terms such as top, bottom, vertical, right, left, etc. It should be understood that such relative terms are used only with reference to the accompanying drawings. These relative terms are not intended to limit the disclosed embodiments.

[0024] The separation valve disclosed herein is configured to couple to and positioned between a storage tank and a hose at a filling station for cryogenic fluids (e.g., liquid hydrogen). The separation valve is configured to quickly seal the nozzles of both the storage tank and the hose in the event that the hose is pulled from the storage tank, for example, due to an operator forgetting to disconnect the nozzles from the receiving port of the filling tank after a filling event and subsequently driving a vehicle carrying the filling tank away from the filling station while the nozzles are still attached to the receiving port. The separation valve also limits the amount of cryogenic fluid discharged from the filling station and / or limits damage to the filling station during this separation event.

[0025] The separation valve disclosed herein is configured to safely control the flow of liquid hydrogen or other cryogenic fluids from a filling tank and through a hose. The separation valve includes a tank-side valve connected to the tank and a nozzle-side valve connected to the hose. When the tank-side valve and nozzle-side valve are securely coupled, both valves open to fluidly connect the hose to the tank, thus allowing cryogenic fluid to flow from the storage tank and into the filling tank during a filling event. Furthermore, when the tank-side valve and nozzle-side valve are decoupled from each other (e.g., due to a separation event), both valves close to prevent cryogenic fluid from escaping from the tank side and to controllably limit cryogenic fluid escape from the nozzle side. To enable the hose to disconnect from the tank in a manner that limits the amount of cryogenic fluid discharged, the separation valve includes one or more separation assemblies configured to break upon application of at least a threshold force associated with a separation event.

[0026] The separation assembly disclosed herein includes a bushing, a pin, and one or more nuts. The bushing extends through a through-hole of a first valve (e.g., a nozzle-side valve or a can-side valve) of the separation valve and is received by a main bore of a countersunk hole of a second valve (e.g., another of a nozzle-side valve or a can-side valve). For example, the body of the first valve includes a flange defining a faceted surface and a through-hole extending to the faceted surface. The body of the second valve includes a flange defining a faceted surface and a countersunk hole having a main bore and a secondary bore positioned along the faceted surface. The pin of the separation assembly extends through the bushing and the through-hole and is securely received by the main bore of the countersunk hole. One or more nuts are configured to hold the pin and bushing in place and to fasten the faceted surface of the first valve to the faceted surface of the second valve. The pin is configured to break upon application of at least a predefined tensile force to pull the first valve away from the second valve, thereby decoupling the first valve from the second valve.

[0027] In one embodiment, the bushing does not contact the pin, thus isolating the pin from the rotational force applied to at least one of the first or second valves. The pin is also configured to break only when a tensile force is applied, rather than when a rotational force is applied, to prevent the operator from accidentally rotating the first and second valves apart.

[0028] In one embodiment, the bushing is screwed to the flange of the first valve to further hold the bushing in place.

[0029] In one embodiment, the bushing includes a flange that engages the surface of the flange of the first valve and is arranged to further hold the bushing in place.

[0030] In one embodiment, the pin includes a first end and a second end. The first end is screwably received by the main bore of the countersunk hole of the second valve. One or more nuts are screwably coupled to the second end of the pin.

[0031] In one embodiment, the separation valve includes a plurality of separation assemblies. The separation assemblies are spaced apart from each other at equal intervals along the circumference of the first valve and the second valve.

[0032] In an embodiment, the threshold force at which the first and second valves of the split valve break below them is based on the composition, location, number, size, and / or shape of the pins. For example, each pin may have an hourglass shape and a notch at its center point along its length. The hourglass shape and the notch at least partially define the predefined tensile force at which the pin breaks below it.

[0033] In one embodiment, one or more nuts include a preload nut and a locking nut. The preload nut is configured to engage a bushing to secure the pin relative to the bushing in place and couple the first valve to the second valve. The locking nut is configured to engage the preload nut to lock the preload nut in place.

[0034] In one embodiment, the separation assembly further includes a cap and a washer. The cap is configured to form a sealing connection with the flange of the first valve via the washer to enclose the pin in the through-hole of the first valve and the countersunk hole of the second valve and to fluidly isolate the pin.

[0035] Other embodiments of the separable assembly include combinations of the features identified above. For example, the separable assembly disclosed herein includes combinations of features of pins, bushings, preload nuts, lock nuts, caps, and / or other components.

[0036] Switch to the image. Figure 1 This describes an example system 10 for transferring liquid hydrogen and / or other cryogenic fluids, as taught herein. System 10 includes a filling station 20 and a vehicle 30 for transporting the cryogenic fluid. The filling station 20 of the illustrated example includes a storage tank 22 (also referred to as a “cryogenic tank” and a “liquid hydrogen tank”), a jacketed hose 24 extending from the storage tank 22, and a nozzle 26 at the distal end of the jacketed hose 24 for dispensing the cryogenic fluid. The vehicle 30 includes a filling tank 32, a hose 34 connected to and extending from the filling tank 32, and a receiving port 36. In other examples, the receiving port 36 is directly connected to the filling tank 32 without an external intermediate hose.

[0037] The storage tank 22 of the filling station 20 is configured to store cryogenic fluid, and the filling tank 32 of the vehicle 30 is configured to receive cryogenic fluid from the storage tank 22 via a jacketed hose 24, a hose 34, a nozzle 26, and a receiving port 36. To transfer cryogenic fluid from the storage tank 22 to the filling tank 32, the operator 40 couples the nozzle 26 to the receiving port 36 to fluidly connect the filling tank 32 to the storage tank 22. Once the operator 40 has securely coupled the nozzle 26 to the receiving port 36, the operator 40 initiates the transfer of cryogenic fluid. For example, the operator 40 can initiate the fluid transfer from a remote location by pressing a button at the filling station 20, which then initiates the filling sequence.

[0038] In the illustrated example, filling station 20 also includes a disconnect valve 100 coupled to another jacketed hose 23. The jacketed hose 23 extends between and couples to both the disconnect valve 100 and the storage tank 22. The disconnect valve 100 is configured to quickly seal the ends of both the jacketed hose 23 and the jacketed hose 24 in the event that the nozzle 26 is pulled away from the storage tank 22, for example, due to operator 40 (i) forgetting to disconnect the nozzle 26 from the receiver 36 after completing a filling event and (ii) subsequently driving vehicle 30 away from filling station 20 while the nozzle 26 is still attached to the receiver 36. The disconnect valve 100 is further configured to limit the amount of cryogenic fluid that may otherwise be discharged from filling station 20 and / or limit damage to filling station 20 during this disconnect event.

[0039] As disclosed in more detail below, the illustrated example of the separation valve 100 includes a nozzle-side valve 200 and a tank-side valve 300. When installed... Figure 1 Within system 10, the separation valve 100 is coupled between the jacketed hose 24 and the storage tank 22 and is fluidly connected to both the jacketed hose 24 and the storage tank 22. A nozzle-side valve 200 is connected to the jacketed hose 24, and a tank-side valve 300 is coupled to the storage tank 22. Additionally, the nozzle-side valve 200 and the tank-side valve 300 are coupled and fluidly connected to each other. When the nozzle-side valve 200 and the tank-side valve 300 are coupled together between the jacketed hose 24 and the storage tank 22, both are in a corresponding open configuration to allow cryogenic fluid (e.g., liquid hydrogen) to flow from the storage tank 22 and to the jacketed hose 24 during the filling sequence. If the vehicle 30 is pulled away from the filling station 20 during the filling sequence, the nozzle-side valve 200 is configured to decouple from the tank-side valve 300, wherein the nozzle-side valve 200 remains coupled to the jacketed hose 24 and the tank-side valve 300 remains coupled to the storage tank 22. When disconnected from each other, both nozzle-side valve 200 and tank-side valve 300 are configured to switch to a corresponding closed configuration to (1) prevent cryogenic fluid from escaping from the jacketed hose 24 and (2) limit the amount of cryogenic fluid escaping from the storage tank 22 as a controlled release due to the vehicle 30 being pulled away from the filling station 20 during the filling sequence.

[0040] Figures 2 to 12 An example of a separation valve 100 according to the teachings herein is depicted. The separation valve 100 is configured to dispense cryogenic fluid between the storage tank 22 and the nozzle 26 during a filling event. Figure 2 As described, the separation valve 100 includes a nozzle-side valve 200 and a tank-side valve 300 coupled together. The nozzle-side valve 200 includes an outer jacket 290, and the tank-side valve 300 includes an outer jacket 390. The separation valve 100 also includes a sleeve assembly 400 configured to engage the outer jackets 290 and 390 and form a seal between the outer jackets 290 and 390.

[0041] Figure 3 This is a cross-sectional view of the nozzle-side valve 200 in a closed configuration. The nozzle-side valve 200 includes a valve body 210 (also referred to as the "nozzle-side body") defining a chamber 220. The chamber 220 (also referred to as the "nozzle-side chamber" and the "fluid chamber") extends between and fluidly connects the inlet 222 (also referred to as the "nozzle-side inlet") and the outlet 224 (also referred to as the "nozzle-side outlet") of the nozzle-side valve 200. The valve body 210 includes a flange 212 (also referred to as the "nozzle-side flange") positioned adjacent to the inlet 222.

[0042] Flange 212 extends radially outward from valve body 210. Flange 212 of valve body 210 defines surface 214 (also referred to as the "nozzle side surface"). Surface 214 may extend perpendicular to the longitudinal axis of chamber 220. (See below for more details.) Figure 6 In more detail, the surface 214 of the nozzle-side valve 200 is configured to engage the tank-side valve 300 when the separator valve 100 is assembled together. Figure 4 ) surface 314.

[0043] The flange 212 of the valve body 210 defines one or more through holes 216 extending to the surface 214, and one or more corresponding separation assemblies 500 of the separation valve 100 extend through the through holes 216. In the illustrated example, the flange 212 defines a plurality of through holes 216 that are circumferentially and equidistantly spaced from each other. For example, the flange 212 defines three through holes 216 that are circumferentially and equidistantly spaced from each other at approximately 120 degrees. In other examples, the flange 212 defines more or fewer through holes 216. Additionally, the separation valve 100 of the illustrated example includes a corresponding separation assembly 500 for each through hole 216 of the nozzle-side valve 200. That is, the separation valve 100 includes a separation assembly 500 for a corresponding through hole 216, wherein each separation assembly 500 extends through the corresponding through hole 216. The separation assemblies 500 are again circumferentially and equidistantly spaced from each other along the flange 212. For example, Figure 3 The separation valve 100 comprises three separation assemblies 500, which are circumferentially and equidistantly spaced from each other at approximately 120 degrees. Furthermore, as described below... Figure 8 In more detail, each through-hole 216 of the illustrated example includes an internal thread configured to receive a bushing 520 of the corresponding split assembly.

[0044] The nozzle-side valve 200 also includes a flow control assembly 225 (also referred to as the "nozzle-side flow control assembly") that is at least partially housed in the chamber 220. Figure 3 In the illustrated example, the flow control assembly 225 includes a lift valve 230 and a shaft 240. The lift valve 230 is coupled to the shaft 240 and configured to extend slidably along the longitudinal axis of the chamber 220. For example, the shaft 240 is screwably coupled to the lift valve body 231 of the lift valve 230. The lift valve 230 is positioned toward the inlet 222 of the chamber 220, and the shaft 240 is positioned toward the outlet 224 of the chamber 220.

[0045] The lift valve 230 is configured to sealably engage the valve seat 218 when the nozzle-side valve 200 is in the closed configuration, such as Figure 3 As shown, this is to prevent cryogenic fluids (such as liquid hydrogen) from flowing through the chamber 220 of the nozzle-side valve 200. See below for more details. Figure 6In more detail, the lift valve 230 is configured to disengage from the valve seat 218 when the nozzle-side valve 200 is in the open configuration so that cryogenic fluid can flow through the chamber 220 of the nozzle-side valve 200.

[0046] In the illustrated example, the lift valve 230 includes a lift valve body 231 and a lift valve disc 232. When the lift valve 230 is coupled to the shaft 240, the lift valve disc 232 is secured in place between the shaft 240 and the lift valve body 231. The lift valve disc 232 is configured to sealably engage the valve seat 218. In the illustrated example, the valve seat 218 is defined by the valve body 210. The lift valve disc 232 is made of polyvinyl chloride and / or any other material configured to form a tight seal with the valve seat 218 at extremely cold temperatures of the cryogenic fluid.

[0047] The lift valve 230 also includes a rod 234, which is configured to engage the tank-side valve 300 when the separate valve 100 is assembled together. Figure 4 The rod 234. In the illustrated example, the rod 234 includes a protrusion 236 extending from its distal end. When the nozzle-side valve 200 is in the closed configuration, the distal end of the rod 234 may extend out of the chamber 220. (See below for more details.) Figure 6 In more detail, the protrusion 236 facilitates the alignment between the rod 234 of the nozzle-side valve 200 and the rod 334 of the tank-side valve 300 to assemble the separation valve 100 together.

[0048] like Figure 3 As described, the flow control assembly 225 includes a lift valve support 250 and a spring 260. The lift valve support 250 defines a bore 252 through which a shaft 240 slidably extends when the flow control assembly 225 changes between a closed and an open configuration. The lift valve support 250 is secured to the valve body 210 via one or more fasteners 254 (e.g., threaded fasteners) adjacent to the outlet 224 of the nozzle-side valve 200. The spring 260 extends between the lift valve support 250 and the shaft 240 and engages the lift valve support 250 and the shaft 240 to bias the lift valve 230 toward the valve seat 218 in the closed configuration.

[0049] The flow control assembly 225 of the illustrated example also includes a pressure relief valve 270. The pressure relief valve 270 is configured to release pressure accumulated due to cryogenic fluid remaining in the jacketed hose 24 between uses, thereby preventing the jacketed hose 24 from rupturing due to high pressure levels.

[0050] In the illustrated example, lift valve 230 and shaft 240 define conduit 280 (also referred to as a "pressure relief conduit"). Shaft 240 defines an inlet 281 of conduit 280, and lift valve 230 defines an outlet 282 of conduit 280. Lift valve 230 and shaft 240 also define an internal chamber 285 along conduit 280 located between inlet 281 and outlet 282.

[0051] Pressure relief valve 270 is housed in an internal chamber 285. In the illustrated example, pressure relief valve 270 includes a plug 271 (also referred to as a "pressure relief plug"), a seat 272 (also referred to as a "pressure relief seat"), and a spring 273 (also referred to as a "pressure relief spring"). Seat 272 is defined by a shaft 240. Plug 271 includes a plug body 274, a plug disc 275, and a retainer 276. Plug disc 275 is made of polyvinyl chloride and / or any other material configured to form a tight seal with seat 272 at extremely cold temperatures of the cryogenic fluid. Plug disc 275 is securely coupled to plug body 274 via retainer 276. Spring 273 extends between and engages with lift valve body 231 of lift valve 230 and plug body 274 of plug 271. Spring 273 is configured to apply a biasing force to plug 271 to bias plug 271 toward seat 272.

[0052] When the pressure of the cryogenic fluid within the jacketed hose 24 is less than the bias force, the spring 273 pushes the plug 271 to seal the plug disc 275 against the seat 272, thereby preventing fluid from being released from the jacketed hose 24 and through the conduit 280. When the pressure of the cryogenic fluid within the jacketed hose 24 is greater than the bias force, the pressure within the jacketed hose 24 pushes the plug 271 to disengage the plug disc 275 from the seat 272, thereby opening the pressure relief valve 270 and allowing the fluid trapped within the jacketed hose 24 to be safely released through the conduit 280.

[0053] like Figure 3As shown in the illustration, the nozzle-side valve 200 of the illustrated example further includes an outer jacket 290 that encloses an insulating layer 292 circumferentially surrounding at least a portion of the valve body 210. In the illustrated example, the insulating layer 292 is a vacuum insulation layer extending over at least a portion of the nozzle-side valve 200 and the jacketed hose 24. The insulating layer 292 (also referred to as a “jacketed insulation layer,” “sealing insulation layer,” “vacuum-insulation layer,” “sealed vacuum-insulation layer,” and “vacuum-insulating sealing layer”) provides insulation around the jacketed hose 24 and the valve body 210 of the nozzle-side valve 200, for example, to facilitate the safe handling of the jacketed hose 24 and / or the nozzle-side valve 200 by the operator 40. The vacuum of the insulating layer 292 may be formed by a vacuum valve or evacuation port positioned along the outer jacket 290 and / or the jacketed hose 24. The insulating layer 292 is formed by the valve body 210, the outer jacket 290, the vacuum seal 294, and / or the jacketed hose 24.

[0054] The nozzle-side valve 200 includes a vacuum seal 294 (also referred to as a “bellows seal”) and one or more jacket supports 296. Each vacuum seal 294 and jacket support 296 extends radially between the valve body 210 and the outer jacket 290 and engages the valve body 210 and the outer jacket 290. The vacuum seal 294 and jacket support 296 are securely coupled to the valve body 210 and the outer jacket 290, for example by welding, such that the vacuum of the insulating layer 292 is maintained after the nozzle-side valve 200 is decoupled from the tank-side valve 300 due to a separation event.

[0055] In the illustrated example, the vacuum seal 294 is configured to reduce heat transfer with the insulation layer 292. In the illustrated example, the vacuum seal 294 comprises a bellows formed from a relatively thin sheet of material (e.g., about 0.2 mm of stainless steel). The vacuum seal 294 may also include one or more bellows supports providing structural support to the bellows. For example, the bellows supports may be formed from a plastic material such as ultra-high molecular weight polyethylene (UHMWPE) and include teeth inserted between and engaging the bellows to provide structural support. In other examples, the vacuum seal 294 may be constructed from a thicker sheet of material (e.g., about 1.5 mm of stainless steel) shaped to form circumferential grooves.

[0056] Figure 4This is a cross-sectional view of a tank-side valve 300 in a closed configuration. The tank-side valve 300 includes a valve body 310 (also referred to as the "tank-side body") defining a chamber 320. The chamber 320 (also referred to as the "tank-side chamber" and "fluid chamber") extends between and fluidly connects the inlet 322 (also referred to as the "tank-side inlet") and the outlet 324 (also referred to as the "tank-side outlet") of the tank-side valve 300. The valve body 310 includes a flange 312 (also referred to as the "tank-side flange") positioned adjacent to the outlet 324.

[0057] Flange 312 extends radially outward from valve body 310. The flange 312 of valve body 310 defines surface 314 (also referred to as the "can side surface"). Surface 314 may extend perpendicular to the longitudinal axis of chamber 320. (See below for more details.) Figure 6 In more detail, the surface 314 of the tank-side valve 300 is configured to engage the nozzle-side valve 200 when the separation valve 100 is assembled together. Figure 3 ) of surface 214.

[0058] The flange 312 of the valve body 310 defines one or more countersunk holes 315, configured to receive one or more corresponding separable assemblies 500. Each countersunk hole 315 includes a main hole 316 and a secondary hole 317 along the surface 314. (The following text is about...) Figure 8 In more detail, the main bore 316 is configured to receive the pin 510 of the corresponding separation assembly 500 and the main bore 317 is configured to receive the bushing 520 of the corresponding separation assembly 500.

[0059] In the illustrated example, flange 312 defines a plurality of countersunk holes 315 which are circumferentially and equidistantly spaced from each other. For example, flange 312 defines three countersunk holes 315 which are circumferentially and equidistantly spaced from each other at approximately 120 degrees. In other examples, flange 312 defines more or fewer countersunk holes 315. Separation valve 100 includes a corresponding separation assembly 500 for each countersunk hole 315 of tank-side valve 300. That is, separation valve 100 includes a separation assembly 500 for a corresponding countersunk hole 315, wherein each separation assembly 500 extends into and is received by the corresponding countersunk hole 315.

[0060] like Figure 3As shown, the tank-side valve 300 further includes a face seal 370 and a spring-loaded seal 375. The face seal 370 is positioned along the flange 312 adjacent to the countersunk hole 315 and configured to form a sealing connection between the flange 212 of the valve body 210 and the flange 312 of the valve body 310 when the nozzle-side valve 200 and the tank-side valve 300 are coupled together. The spring-loaded seal 375 is positioned along the valve body 310 adjacent to the outlet 324 and configured to form a sealing connection between the valve body 210 and the valve body 310 when the nozzle-side valve 200 and the tank-side valve 300 are coupled together. The spring-loaded seal 375 is configured to facilitate the formation of a sealing connection between the valve body 210 and the valve body 310.

[0061] The tank-side valve 300 also includes a flow control assembly 325 (also referred to as the "tank-side flow control assembly") that is at least partially housed in the chamber 320. Figure 4 In the illustrated example, the flow control assembly 325 includes a lift valve 330 and a shaft 340. The lift valve 330 is positioned toward the outlet 324 of the chamber 320, and the shaft 340 is positioned toward the inlet 322 of the chamber 320. The lift valve 330 and the shaft 340 are coupled together and configured to extend slidably along the longitudinal axis of the chamber 320. For example, the shaft 340 is screwably coupled to the lift valve body 331 of the lift valve 330. In the illustrated example, the shaft 340 defines a cavity 380 (also referred to as a "shaft cavity") and a conduit 382 (also referred to as a "shaft conduit"). The cavity 380 is configured to receive the lift valve body 331 to couple the shaft 340 to the lift valve 330. The conduit 382 prevents pressure from forming within the cavity 380 that would otherwise hinder the cavity 380 from securely receiving the lift valve body 331.

[0062] The lift valve 330 is configured to sealably engage the valve seat 318 when the tank-side valve 300 is in the closed configuration, such as Figure 4 As shown, this is to prevent cryogenic fluids (such as liquid hydrogen) from flowing through chamber 320 of tank-side valve 300. See below for more information. Figure 6 In more detail, the lift valve 330 is configured to disengage from the valve seat 318 when the tank-side valve 300 is in the open configuration so that cryogenic fluid can flow through the chamber 320 of the tank-side valve 300.

[0063] In the illustrated example, the lift valve 330 includes a lift valve body 331 and a lift valve disc 332. When the lift valve 330 is coupled to the shaft 340, the lift valve disc 332 is secured in place between the shaft 340 and the lift valve body 331. The lift valve disc 332 is configured to sealably engage the valve seat 318. In the illustrated example, the valve seat 318 is defined by the valve body 310. The lift valve disc 332 is made of polyvinyl chloride and / or any other material configured to form a tight seal with the valve seat 318 at extremely cold temperatures of the cryogenic fluid.

[0064] The lift valve 330 also includes a rod 334, which is configured to engage the nozzle-side valve 200 when the separate valve 100 is assembled together. Figure 3 The rod 234. In the illustrated example, the distal end of the rod 334 defines a cavity 336 (also referred to as a "rod cavity"). Furthermore, the rod 334 defines a conduit 338 (also referred to as a "rod conduit") extending between the cavity 336 and the outer peripheral surface of the rod 334. The following text discusses... Figure 6 In more detail, the cavity 336 of the rod 334 is configured to align with and receive the protrusion 236 of the rod 234 to facilitate alignment between the rod 234 of the nozzle-side valve 200 and the rod 334 of the tank-side valve 300 when the separation valve 100 is assembled. Alternatively, the cavity 336 is configured to receive the protrusion 236 to stabilize the lift valve 230 and the lift valve 330 when a cryogenic fluid flows turbulently through the tank-side valve 300 and the nozzle-side valve 200. Furthermore, the conduit 338 prevents pressure from forming within the cavity 336, which would otherwise hinder the cavity 336 from securely receiving the protrusion 236 of the rod 234.

[0065] like Figure 4 As described, the flow control assembly 325 further includes a lift valve support 350 and a spring 360. The lift valve support 350 defines a bore 352 through which a shaft 340 slidably extends when the flow control assembly 325 is switched between a closed and an open configuration. The lift valve support 350 is secured to the valve body 310 via one or more fasteners 354 (e.g., threaded fasteners) adjacent to the inlet 322 of the tank-side valve 300. The spring 360 extends between the lift valve support 350 and the shaft 340 and engages the lift valve support 350 and the shaft 340 to bias the lift valve 330 toward the valve seat 318 in the closed configuration.

[0066] like Figure 4As shown in the illustration, the tank-side valve 300 of the illustrated example further includes an outer jacket 390 that encloses an insulating layer 392 circumferentially surrounding at least a portion of the valve body 310. In the illustrated example, the insulating layer 392 is a vacuum insulation layer extending over at least a portion of the tank-side valve 300 and the jacketed hose 23. The insulating layer 392 (also referred to as a “jacketed insulation layer,” “sealing insulation layer,” “vacuum-insulation layer,” “sealed vacuum-insulation layer,” and “vacuum-insulating sealing layer”) provides insulation around the jacketed hose 23 and the valve body 310 of the tank-side valve 300, for example, to facilitate the safe handling of the jacketed hose 23 and / or the tank-side valve 300 by the operator 40. The vacuum of the insulating layer 392 may be formed by a vacuum valve or evacuation port positioned along the outer jacket 390 and / or the jacketed hose 23. The insulating layer 392 is formed by the valve body 310, the outer jacket 390, the vacuum seal 394, and / or the jacketed hose 23.

[0067] The tank-side valve 300 includes a vacuum seal 394 (also referred to as a “bellows seal”) and one or more jacket supports 396. Each vacuum seal 394 and jacket support 396 extends radially between the valve body 310 and the outer jacket 390 and engages the valve body 310 and the outer jacket 390. The vacuum seal 394 and jacket support 396 are securely coupled to the valve body 310 and the outer jacket 390, for example by welding, such that the vacuum of the insulating layer 392 is maintained after the tank-side valve 300 is decoupled from the tank-side valve 200 due to a separation event.

[0068] In the illustrated example, the vacuum seal 394 is configured to reduce heat transfer with the insulation layer 392. In the illustrated example, the vacuum seal 394 comprises a bellows formed from a relatively thin sheet of material (e.g., about 0.2 mm of stainless steel). The vacuum seal 394 may also include one or more bellows supports providing structural support to the bellows. For example, the bellows supports may be formed from a plastic material such as ultra-high molecular weight polyethylene (UHMWPE) and include teeth inserted between and engaging the bellows to provide structural support. In other examples, the vacuum seal 394 may be constructed from a thicker sheet of material (e.g., about 1.5 mm of stainless steel) shaped to form circumferential grooves.

[0069] In the examples described, Figure 3 The nozzle-side valve 200 is a first valve having a valve body 210 with a flange 212 defining a through-hole 216 for separating the assembly 500, and Figure 4The can-side valve 300 is a second valve having a valve body 310 with a flange 312 defining a countersunk hole 315 for separating the assembly 500. In other examples, the can-side valve 300 is a first valve having a valve body 310 with a flange 312 defining a through hole for separating the assembly 500, and the nozzle-side valve 200 is a second valve having a valve body 210 with a flange 212 defining a countersunk hole for separating the assembly 500.

[0070] Figure 5 This is a cross-sectional view of the sleeve assembly 400. In the illustrated example, the sleeve assembly 400 includes a sleeve 410 having a hollow cylindrical shape and configured to extend circumferentially around portions of the outer jackets 290 and 390. The sleeve 410 is configured to engage both the outer surfaces of the outer jackets 290 and 390 when the nozzle-side valve 200 and the tank-side valve 300 are coupled together. In some examples, the sleeve 410 is configured to slide into place. Furthermore, in some examples, the sleeve 410 is made of a plastic material, for example, to facilitate a sealing engagement with the outer jackets 290 and 390, which may be made of a metallic material.

[0071] The sleeve assembly 400 also includes seals 420, 425 positioned along the inner surface of the sleeve 410. Seal 420 (e.g., an O-ring) is positioned adjacent to a first end of the sleeve 410 and configured to sealably engage the outer jacket 290. Seal 425 (e.g., an O-ring) is positioned adjacent to the opposite second end of the sleeve 410 and configured to sealably engage the outer jacket 390. Figure 6 As illustrated, seal 420 is configured to form a sealing engagement between sleeve 410 and outer jacket 290 to maintain a vacuum in insulation layer 292, and seal 425 is configured to form a sealing engagement between sleeve 410 and outer jacket 390 to maintain a vacuum in insulation layer 392. In the illustrated example, sleeve assembly 400 includes two seals 420 and 425. In other examples, sleeve assembly 400 may include more, fewer, and / or different types of seals.

[0072] Return to Figure 5 The sleeve assembly 400 also includes a valve housing 430, a evacuation valve 450, and a pressure reducing valve 460. The valve housing 430 is securely coupled to the sleeve 410, for example, by welding. The valve housing 430 defines a chamber 440 (also referred to as a "valve chamber"). The valve housing 430 and the sleeve 410 also define a conduit 445 (also referred to as a "valve conduit"). Figure 6 and 8As described, conduit 445 can be fluidly connected to cavitation 575 of separation assembly 500 via the internal fluid of sleeve 410. A sealed (e.g., welded) connection of vacuum seal 294 fluidly isolates insulation layer 292 from conduit 445, and a sealed (e.g., welded) connection of vacuum seal 394 fluidly isolates insulation layer 392 from conduit 445.

[0073] Pressure relief valve 460 (also known as a "pressure relief valve") is configured to extract liquid hydrogen from insulating layer 292 and / or insulating layer 392 to maintain a corresponding vacuum in insulating layer 292 and insulating layer 392. For example, the extracted liquid hydrogen may have already been extracted from chamber 440 via cavitation 575. Figure 8 A cavitation 575 is located between chambers 220 and 320 and insulating layers 292 and 392. A pressure reducing valve 460 is set to a low-pressure setting (e.g., 1.5 pounds per square inch absolute (PSIA)) to maintain a vacuum in insulating layers 292 and 392. That is, if the pressure in chamber 440 and / or the cavitation 575 fluidly connected to chamber 440 exceeds a predetermined threshold (e.g., 1.6 PSIA), then the pressure reducing valve 460 opens to reduce the pressure in chamber 440 and / or the cavitation 575.

[0074] A vacuum valve 450 is configured to prevent gas liquefaction and / or minimize pressure fluctuations. Without the vacuum valve 450, liquid hydrogen flowing through chambers 220 and 320 could become so cold that ice could form and / or the surrounding nitrogen and / or oxygen could become liquefied. This liquefaction of the gas could cause air to flow into cavitation 575, which could lead to pressure fluctuations and, in turn, fluctuations in the forces holding the separation valve 500 together. The vacuum valve 450 prevents gas liquefaction and minimizes pressure fluctuations by creating a vacuum in cavitation 575 and / or purging helium from cavitation 575.

[0075] Figures 6 to 8 This describes the separation valve 100 when the nozzle-side valve 200 is coupled to the tank-side valve 300 and is in the corresponding open configuration to allow cryogenic fluid (e.g., liquid hydrogen) to flow from the storage tank 22 to the nozzle 26 during a filling event. For example, when the nozzle-side valve 200 is coupled to the tank-side valve 300 and is in the corresponding open configuration, the cryogenic fluid is configured to flow from the storage tank 22 and through the jacketed hose 23 ( Figure 1 ), flowing into chamber 320 of tank-side valve 300 via inlet 322, passing through chamber 320 of tank-side valve 300 and nozzle-side valve 200 ( Figure 6 The chamber 220, via the outlet 224 ( Figure 6 ) flows out of chamber 220 and through the jacketed tubing 24 ( Figure 1 ) flows to nozzle 26.

[0076] like Figure 6 As explained, when the nozzle-side valve 200 is coupled to the tank-side valve 300, the flange 212 of the nozzle-side valve 200 engages with the flange 312 of the tank-side valve 300. Specifically, the surface 214 of the flange 212 engages with the surface 314 of the flange 312. Furthermore, when the nozzle-side valve 200 is coupled to the tank-side valve 300, a spring-loaded seal 375 is configured to form a sealing connection between the flanges 212 and 312.

[0077] Go to Figure 7 The rod 234 of the lift valve 230 of the nozzle-side valve 200 is configured to engage the rod 334 of the lift valve 330 of the tank-side valve 300. For example, when the nozzle-side valve 200 is coupled to the tank-side valve 300, the cavity 336 of the rod 334 is configured to securely receive the protrusion 236 of the rod 234. When the rods 234 and 334 are securely engaged, the lift valve 230 of the nozzle-side valve 200 applies a force to the lift valve 330 that overcomes the biasing force of the spring 360 and pushes the lift valve 330, causing the shaft 340 to slide through the bore 352 of the lift valve support 350. The lift valve disc 332 then disengages from the valve seat 318, allowing the outlet 324 to fluidly connect to the inlet 322 so that cryogenic fluid can flow through the chamber 320 of the tank-side valve 300. Similarly, when rods 234 and 334 are securely engaged, the lift valve 330 of the tank-side valve 300 applies a force to the lift valve 230, overcoming the biasing force of the spring 260 and pushing the lift valve 230, causing the shaft 240 to slide through the hole 252 of the lift valve support 250. The lift valve disc 232 then disengages from the valve seat 218, allowing fluid connection between the outlet 224 and the inlet 222 so that cryogenic fluid can flow through the chamber 220 of the nozzle-side valve 200.

[0078] Return to Figure 6 When the nozzle-side valve 200 is coupled to the tank-side valve 300, the through-hole 216 of the valve body 210 is aligned with the countersunk hole 315 of the valve body 210. For example, each through-hole 216 is configured to align with a corresponding countersunk hole 315. In the illustrated example, the nozzle-side valve 200 and / or the tank-side valve 300 include features such as bonding features to facilitate alignment between the through-hole 216 and the countersunk hole 315 when the nozzle-side valve 200 and the tank-side valve 300 are coupled together. For example, the protrusion 236 of the rod 234 and the cavity 336 of the rod 234 are bonded to align the through-hole 216 with the countersunk hole 315.

[0079] Through-hole 216 and countersunk hole 315 are aligned to receive the separation assembly 500. For example, each separation assembly 500 is configured to extend through and be received by the corresponding through-hole 216 and countersunk hole 315. Each separation assembly 500 is radially positioned between face seal 370 and vacuum seals 294, 394. Vacuum seals 294, 394 are positioned to fluidly isolate the separation assembly 500 from insulating layers 292, 392. Face seal 370 is radially positioned between the separation assembly 500 and chambers 220, 320 to fluidly isolate the separation assembly 500 and the cavities 575 in which the separation assembly 500 is positioned from chambers 220, 320. In some instances, face seal 370 is made of a low hydrogen permeability material, for example, to prolong the functional vacuum. In other instances, face seal 370 is made of a metal (e.g., indium) to form a gas seal via cold welding.

[0080] When a pull force less than a predefined pull force is applied to keep the nozzle-side valve 200 and the tank-side valve 300 securely coupled to each other, the separation assembly 500 is configured to remain in place together. The predefined pull force corresponds to a separation event. The separation assembly 500 is configured to split when the nozzle-side valve 200 is pulled away from the tank-side valve 300 with at least a predefined pull force, for example, due to a separation event. Figure 8 As described herein, each separable assembly 500 includes a pin 510 (also known as a "separation pin"), a bushing 520, and one or more nuts 530, 540.

[0081] like Figure 9 As shown, pin 510 includes a first end 511 and a second end 513 opposite to each other. The first end 511 includes an external thread 512 (also referred to as a "first external thread"). The second end 513 includes an external thread 514 (also referred to as a "second external thread"). Pin 510 also includes a middle portion 515 extending between the first end 511 and the second end 513 and integrally formed with both ends 511 and 513. In the illustrated example, pin 510 has an hourglass shape, wherein the middle portion 515 has a smaller diameter than the first end 511 and the second end 513. Alternatively or additionally, the middle portion 515 defines a notch 516 located at the center along the length of pin 510. The notch 516 extends circumferentially around the middle portion 515 of pin 510. In the illustrated example, the notch 516 is V-shaped with an angle of approximately 60 degrees.

[0082] Pin 510 is configured to remain intact when a tensile force less than a predefined tensile force is applied and to break when a minimum predefined tensile force is applied. The predefined tensile force is based on the composition, number, arrangement, shape, size, and / or form of pin 510. For example, a notch 516 and / or an hourglass shape at least partially predefines the predefined tensile force at which pin 510 is configured to break. Pin 510 may be made of plastic, ceramic, metal, and / or any other material that enables pin 510 to break consistently when the desired tensile force is applied.

[0083] As in Figure 10 As shown, bushing 520 includes a first end 521 and a second end 522. The first end 521 is opposite to the second end 522. Bushing 520 defines a hole 523 that extends between the first end 521 and the second end 522 along the longitudinal axis of bushing 520. Bushing 520 includes a flange 524 (also referred to as a "bushel flange") extending radially outward at the first end 521. Flange 524 includes an inner surface 525 extending radially outward and facing the second end 522. Additionally, the second end 522 is screwed with an external thread 526. In the illustrated example, the external thread 526 extends from the second end 522 toward the flange 524.

[0084] Return to Figure 8 The bushing 520 is configured to extend through the through-hole 216 and is securely coupled to the flange 212. For example, the bushing 520 is fixedly coupled to the flange 212 when positioned to extend through the through-hole 216 to hold the bushing 520 in place. In the illustrated example, the internal portion of the external thread 526 is screwably received by the internal thread of the through-hole 216. In other examples, the bushing 520 is secured in place through the through-hole 216 by press fit and / or other fastening methods. Additionally, the bushing 520 is received in the main bore 317 of the countersunk bore 315. Specifically, the flange 524 of the bushing 520 is received in the main bore 317 of the countersunk bore 315 such that the inner surface 525 of the flange 524 is flush with the surface 314 of the flange 312 of the tank-side valve 300. The face surface 214 of the flange 212 is configured to engage the inner surface 525 of the flange 524 of the bushing 520 to further hold the bushing 520 in the proper position between the nozzle-side valve 200 and the can-side valve 300.

[0085] When the disassembled assembly 500 is fully assembled with the nozzle-side valve 200 and the tank-side valve 300, the pin 510 extends through the hole 523 of the bushing 520, which extends through the through hole 216. Additionally, the pin 510 is securely received in the main hole 316 of the countersunk hole 315. For example, the first end 511 of the pin 510 extends beyond the first end 521 of the bushing 520 and is screwably received by the main hole 316 of the countersunk hole 315. The second end 513 of the pin 510 extends beyond the second end 522 of the bushing 520, such that the external thread 514 extends beyond the bushing 520.

[0086] One or more of nuts 530 and 540 are configured to hold pin 510 in place. Furthermore, when pin 510 and bushing 520 are secured in place, the release assembly 500 fastens the face surface 214 of nozzle-side valve 200 to the face surface 314 of tank-side valve 300. In the illustrated example, nut 530 is a preload nut and nut 540 is a lock nut. Nuts 530 and 540 are configured to be screwably coupled to the second end 513 of pin via external thread 514. For example, nut 530 is configured to screw onto a first intermediate portion of external thread 514 and engage the second end 522 of bushing 520 to secure pin 510 relative to bushing 520 in place, and also to securely couple nozzle-side valve 200 to tank-side valve 300. Additionally, face seal 370, located radially adjacent to the release assembly 500, is activated by the tightening of nut 530. Nut 540 is configured to engage with the second intermediate portion of external thread 514 and engage nut 530, which engages bushing 520 to lock nut 530 in place to further secure nozzle-side valve 200 to tank-side valve 300. Nuts 530 and 540 are also configured to fasten surface 214 of nozzle-side valve 200 to surface 314 of tank-side valve 300.

[0087] like Figure 8 As described, bushing 520 does not contact pin 510. For example, pin 510 has an outer diameter smaller than the outer diameter of the bore 523 of bushing 520, such that pin 510 does not contact bushing 520 when it is extended through the bore 523 of bushing 520. Bushing 520 and pin 510 are also arranged relative to flange 212 of nozzle-side valve 200 and flange 312 of tank-side valve 300, such that pin 510 is isolated from rotational forces applied to at least one of nozzle-side valve 200 and tank-side valve 300. That is, bushing 520 is configured to prevent rotational forces from acting on pin 510 and twisting pin 510 away. Pin 510 and bushing 520 of the separation assembly 500 are arranged in this way to prevent operator 40 from twisting nozzle-side valve 200 and tank-side valve 300 away during operation. Alternatively, the separation assembly 500 is configured to break when at least a predefined pull force associated with a separation event is applied to the nozzle-side valve 200 and / or the tank-side valve 300.

[0088] The illustrated example of the separate assembly 500 also includes a cap 550 and a washer 560. For example... Figure 11 As shown, cap 550 includes a cavity 552 and an opening 554 into the cavity 552. Cap 550 also includes an internal thread 556 adjacent to the opening 554. Return to Figure 8The cap 550 is screwably received by the second end 522 of the bushing 520. Specifically, the internal thread 556 of the cap 550 is configured to screw onto the outer portion of the external thread 526 of the bushing 520. The cap 550 is configured to screw onto the bushing 520 to secure a sealing connection between the nozzle-side valve 200 and the can-side valve 300. When the bushing 520 is fully screwed onto the bushing 520, the end of the cap 550 adjacent to its opening 554 engages a washer 560 (e.g., formed of an indium alloy) to form an airtight connection between the cap 550 and the flange 212 of the nozzle-side valve 200. The cap 550 and the washer 560 further enclose the separate assembly 500 in the through-hole 216 and the countersunk hole 315, where an airtight pin 510 is positioned, and isolates the airtight cavity 575 from the vacuum fluid of the insulating layer 292 of the nozzle-side valve 200.

[0089] To assemble the nozzle-side valve 200 and the tank-side valve 300 with one or more separable assemblies 500, a bushing 520 extends through a through-hole 216. The bushing 520 is securely coupled to the flange 212 within the through-hole 216, for example, via its external thread 526 and the internal thread of the through-hole 216. A first end 511 of the pin 510 is securely inserted into the main hole 316 of the countersunk hole 315, for example, via its external thread 512 and the internal thread of the main hole 316. The pins 510 and bushings 520 of each separable assembly 500 are then axially aligned with each other. The nozzle-side valve 200 and the tank-side valve 300 are pressed together by a clamping force such that (1) each 510 extends through the corresponding bushing 520, (2) the flange 524 of each bushing 520 is received in the main hole 317 of the corresponding countersunk hole 315, and (3) the surface 214 of the nozzle-side valve 200 engages the surface 314 of the tank-side valve 300.

[0090] Subsequently, for each disassembled assembly 500, a nut 530 is screwed onto the external thread 514 of the pin 510 and engages the second end 522 of the bushing 520 until a predefined torque is reached. Then, a nut 540 is screwed onto the external thread 514 to engage the nut 530 and lock the pin 510 in place. A washer 560 extends over the bushing 520 and is positioned such that the washer 560 engages the bushing 520 and the flange 212 of the nozzle-side valve 200. Then, a cap 550 is screwed onto the bushing 520 until the end of the cap 550 sealably engages the washer 560 to form a sealing connection between the cap 550 and the flange 212 of the nozzle-side valve 200.

[0091] Figure 12This describes the separation valve 100 after the nozzle-side valve 200 and tank-side valve 300 are decoupled from each other due to a separation event. When the nozzle-side valve 200 and tank-side valve 300 are decoupled from each other, each of the nozzle-side valve 200 and tank-side valve 300 is in a corresponding closed configuration. For example, the lift valve disc 232 of the lift valve 230 sealably engages the valve seat 218 to close the fluid connection between the inlet 222 and outlet 224 of the nozzle-side valve 200, and the lift valve disc 332 of the lift valve 330 sealably engages the valve seat 318 to close the fluid connection between the inlet 322 and outlet 324 of the tank-side valve 300. The nozzle-side valve 200 and tank-side valve 300 also restrict the discharge of cryogenic fluids, such as liquid hydrogen, during the separation event.

[0092] During operation, when at least a predefined pulling force is applied by pulling the nozzle 26 in a direction away from the storage tank 22, the pin 510 of the disengagement assembly 500 breaks. With the pin 510 broken, the nozzle-side valve 200, still connected to the jacketed hose 24, is no longer securely coupled to the tank-side valve 300, still connected to the jacketed hose 23. The nozzle-side valve 200 is then decoupled from the tank-side valve 300, and the jacketed hose 24 is pulled away from the jacketed hose 23. When the nozzle-side valve 200 is decoupled from the tank-side valve 300, the lift valve 230 sealably engages the valve seat 218 to close the nozzle-side valve 200, and the lift valve 330 sealably engages the valve seat 318 to close the tank-side valve 300. In the closed configuration, the nozzle-side valve 200 limits the amount of cryogenic fluid that can be discharged from the jacketed hose 24, and the tank-side valve 300 prevents cryogenic fluid from being discharged from the storage tank 22.

[0093] The following discloses exemplary embodiments based on the teachings herein.

[0094] Example 1. A separation valve for dispensing cryogenic fluid between a cryogenic tank and a nozzle includes a first valve. The first valve includes a first valve body. The first valve body includes a first flange defining a first surface and a through-hole extending to the first surface. The separation valve includes a second valve. The second valve includes a second valve body. The second valve body includes a second flange defining a second surface and a countersunk hole having a main hole along the second surface and a main hole. The separation valve includes a separation assembly. The separation assembly is configured to secure the first surface of the first valve to the second surface of the second valve. The separation assembly includes a bushing extending through the through-hole, fixedly coupled to the first flange, and received by the main hole of the countersunk hole. The separation assembly includes a pin extending through the bushing and the through-hole and fixedly received by the main hole of the countersunk hole, and one or more nuts hold the pin in place. The pin is configured to break upon application of at least a predefined tensile force to pull the first valve away from the second valve to decouple the first valve from the second valve.

[0095] Example 2. The separation valve according to Example 1, wherein when the first valve and the second valve are firmly coupled together, the first valve and the second valve are in a corresponding open configuration to allow the cryogenic fluid to flow from the cryogenic tank and to the nozzle during a filling event.

[0096] Example 3. The separation valve according to Example 1 or 2, wherein when the first valve and the second valve are decoupled from each other in a separation event, the first valve and the second valve are in a corresponding shut-off configuration to limit the discharge of the cryogenic fluid.

[0097] Example 4. The separation valve according to any one of Examples 1 to 3 further includes a plurality of separation assemblies. The plurality of separation assemblies comprise the separation assembly. The plurality of separation assemblies are circumferentially and equidistantly spaced from each other.

[0098] Example 5. A separation valve according to any one of Examples 1 to 4, wherein the first valve is a nozzle-side valve and the second valve is a tank-side valve.

[0099] Example 6. The separation valve according to Example 5, wherein when the first valve and the second valve are decoupled from each other in a separation event, the second valve is configured to restrict the escape of the cryogenic fluid in a controlled manner.

[0100] Example 7. A separation valve according to any one of Examples 1 to 6, wherein the bushing does not contact the pin to isolate the pin from the rotational force applied to at least one of the first valve or the second valve and to prevent the rotational force from acting on the pin and twisting the pin open.

[0101] Example 8. A separation valve according to any one of Examples 1 to 7, wherein the bushing includes a first end and a second end opposite to the first end.

[0102] Example 9. The separation valve according to Example 8, wherein the second end includes an external thread configured to be received by the internal thread of the through hole to securely couple the bushing to the first flange.

[0103] Example 10. The separation valve according to Example 8, wherein the bushing includes a bushing flange at the first end. The first surface of the first flange of the first valve engages the bushing flange to further hold the bushing in place.

[0104] Example 11. A separating valve according to any one of Examples 1 to 10, wherein the pin has an hourglass shape and includes a notch at a center point along the length of the pin. The hourglass shape and the notch at least partially define the predefined tension beneath which the pin is configured to break.

[0105] Example 12. A separation valve according to any one of Examples 1 to 11, wherein the pin includes a first end that is screwably received by the main hole of the countersunk hole.

[0106] Example 13. The separation valve according to Example 12, wherein one or more nuts are screwably coupled to the second end of the pin.

[0107] Example 14. A separation valve according to any one of Examples 1 to 13, wherein the one or more nuts comprise a preload nut and a locking nut. The preload nut is configured to engage the bushing to secure the pin relative to the bushing in place and couple the first valve to the second valve. The locking nut is configured to engage the preload nut to lock the preload nut pin in place.

[0108] Example 15. A separation valve according to any one of Examples 1 to 14, wherein the separation assembly further includes a cap and a gasket, wherein the cap is configured to form a sealing connection with the first flange of the first valve to enclose the pin in the through hole of the first valve and the countersunk hole of the second valve and fluidly isolate the pin.

[0109] Example 16. A separation valve according to any one of Examples 1 to 13 and 15, further comprising a face seal and one or more vacuum seals. The separation assembly is radially positioned between the face seal and the one or more vacuum seals. The face seal is positioned to fluidly isolate the separation assembly from the fluid chambers of the first valve and the second valve. The one or more vacuum seals are positioned to fluidly isolate the separation assembly from the insulating layers of the first valve and the second valve.

[0110] Example 17. A separation assembly for a separation valve used for dispensing cryogenic fluid between a cryogenic tank and a nozzle includes a bushing configured to extend through a through-hole of a first valve of the separation valve, be fixedly coupled to the first valve, and be received by a main bore of a countersunk hole of a second valve of the separation valve. The separation assembly includes a pin configured to extend through the bushing and the through-hole of the first valve and be fixedly received by a main bore of the countersunk hole of the second valve. The separation assembly includes one or more nuts configured to hold the pin in place to secure the first valve to the second valve. The pin is configured to break upon application of at least a predefined tensile force to pull the first valve away from the second valve, thereby decoupling the first valve from the second valve.

[0111] Example 18. The separation assembly according to Example 17, wherein the bushing is configured not to contact the pin to isolate the pin from the rotational force applied to at least one of the first valve or the second valve and to prevent the rotational force from acting on the pin and twisting the pin open.

[0112] Example 19. The separable assembly according to Example 17 or 18, wherein the bushing includes a first end and a second end opposite to the first end.

[0113] Example 20. The separable assembly according to Example 19, wherein the second end includes an external thread configured to be screwably received by the internal thread of the through hole to securely couple the bushing to the first valve.

[0114] Example 21. The separation assembly according to Example 19, wherein the bushing includes a bushing flange at the first end. The bushing flange is configured to engage the first valve engagement to further hold the bushing in place.

[0115] Example 22. A separable assembly according to any of Examples 17 to 21, wherein the pin has an hourglass shape and includes a notch at a center point along the length of the pin. The hourglass shape and the notch at least partially define the predetermined tensile force under which the pin is configured to break.

[0116] Example 23. A separate assembly according to any of Examples 17 to 22, wherein the pin includes a first end configured to be screwably received by the main hole of the countersunk hole.

[0117] Example 24. The separable assembly according to Example 23, wherein the one or more nuts are configured to be screwably coupled to the second end of the pin.

[0118] Example 25. A separate assembly according to any of Examples 17 to 24, wherein the one or more nuts comprise a preload nut and a locking nut. The preload nut is configured to engage the bushing to secure the pin relative to the bushing in place and couple the first valve to the second valve. The locking nut is configured to engage the preload nut to lock the preload nut in place.

[0119] Example 26. A separation assembly according to any one of Examples 17 to 25, wherein the separation assembly further includes a cap and a washer, wherein the cap is configured to form a sealing connection with the first valve via the washer to enclose the pin in the through-hole of the first valve and the countersunk hole of the second valve and to fluidly isolate the pin.

Claims

1. A separation valve for dispensing cryogenic fluid between a cryogenic tank and a nozzle, the separation valve comprising: A first valve includes a first valve body, wherein the first valve body includes a first flange defining a first surface and a through hole extending to the first surface; A second valve includes a second valve body, wherein the second valve body includes a second flange defining a second surface and a countersunk hole having a main hole and a primary hole along the second surface. and A separation assembly configured to secure the first surface of the first valve to the second surface of the second valve, the separation assembly comprising: A bushing, which extends through the through hole, is fixedly coupled to the first flange, and is received by the main hole of the countersunk hole; A pin, extending through the bushing and the through hole and securely received by the main hole of the countersunk hole; and One or more nuts hold the pin in place; The pin is configured to break when at least a predefined pulling force is applied to pull the first valve away from the second valve, thereby decoupling the first valve from the second valve.

2. The separation valve according to claim 1, wherein, When the first valve and the second valve are firmly coupled together, the first valve and the second valve are in their respective open configurations to allow the cryogenic fluid to flow from the cryogenic tank and to the nozzle during a filling event.

3. The separation valve according to claim 1, wherein, When the first valve and the second valve are decoupled from each other in a separation event, the first valve and the second valve are in a corresponding shutdown configuration to limit the discharge of the cryogenic fluid.

4. The separation valve of claim 1, further comprising a plurality of separation assemblies, wherein the plurality of separation assemblies includes the separation assembly, and wherein the plurality of separation assemblies are circumferentially and equidistantly spaced apart from each other.

5. The separation valve according to claim 1, wherein the first valve is a nozzle-side valve and the second valve is a tank-side valve.

6. The separation valve according to claim 5, wherein, When the first valve and the second valve are decoupled from each other in a separation event, the first valve is configured to restrict the escape of the cryogenic fluid in a controlled manner.

7. The separation valve of claim 1, wherein the bushing does not contact the pin to isolate the pin from the rotational force applied to at least one of the first valve or the second valve and to prevent the rotational force from acting on the pin and twisting the pin open.

8. The separation valve of claim 1, wherein the bushing comprises a first end and a second end opposite to the first end.

9. The separation valve of claim 8, wherein the second end includes an external thread configured to be screwably received by the internal thread of the through hole to securely couple the bushing to the first flange.

10. The separation valve of claim 8, wherein the bushing includes a bushing flange at the first end, wherein the first face surface of the first flange of the first valve engages the bushing flange to further hold the bushing in place.

11. The separating valve of claim 1, wherein the pin has an hourglass shape and includes a notch at a center point along the length of the pin, wherein the hourglass shape and the notch at least partially define the predefined tension beneath which the pin is configured to break.

12. The separation valve of claim 1, wherein the pin includes a first end that is screwably received by the main hole of the countersunk hole.

13. The separation valve of claim 12, wherein the one or more nuts are screwably coupled to the second end of the pin.

14. The separation valve of claim 1, wherein the one or more nuts comprise a preload nut and a locking nut, wherein the preload nut is configured to engage the bushing to secure the pin relative to the bushing in place and couple the first valve to the second valve, and wherein the locking nut is configured to engage the preload nut to lock the preload nut in place.

15. The separation valve of claim 1, wherein the separation assembly further comprises a cap and a gasket, wherein the cap is configured to form a sealing connection with the first flange of the first valve via the gasket to enclose the pin in the through-hole of the first valve and the countersunk hole of the second valve and to fluidly isolate the pin.

16. The separation valve of claim 1, further comprising a face seal and one or more vacuum seals, wherein the separation assembly is radially positioned between the face seal and the one or more vacuum seals, wherein the face seal is positioned to fluidly isolate the separation assembly from the fluid chambers of the first valve and the second valve, and wherein the one or more vacuum seals are positioned to fluidly isolate the separation assembly from the insulating layers of the first valve and the second valve.

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