Vapor shield

Abstract

A system, method, apparatus and / or apparatus for vapor protection is provided. The vapor shield is attachable to a cryogenic storage container having an opening and a pump-out port. The vapor shield may include a collar and a pump-out port shield. The collar of the vapor shield may be attached to the opening of the cryogenic storage container and may support the pump-out port shield. The pump-out port guard may direct overflowing fluid, such as liquid refrigerant, away from the pump-out port. In this manner, the pump-out port may be protected during filling and emptying of the cryogenic storage container with cooling fluid.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of priority to U.S. Patent Application No. 18 / 112,975, filed on February 22, 2023, entitled “VAPOR SHIELD,” the entire contents of which are incorporated herein by reference. Background Art 1. Technical Field

[0002] The present specification relates to a system, device or apparatus for preventing vapor and fluid escape from a cryogenic storage container, such as a Dewar flask. 2. Background Technology

[0004] Cryogenic storage vessels (such as Dewar flasks, dry vapor transporters, or other containers) are used to transport materials at extremely low temperatures. Cryogenic storage vessels may contain a coolant to provide a low temperature for the contents of the cryogenic storage vessel. These cryogenic storage vessels may retain vaporized liquid nitrogen (or dry vapor) to generate a low temperature within the vessel. Cryogenic storage vessels may also be vacuum-insulated to maintain extremely low temperatures.

[0005] Cryogenic storage containers can be filled with cryogenic materials by pouring or placing liquid or other materials into the container. When materials are poured or placed into the cryogenic storage container, these materials may overflow from the top of the storage container or near the top or overflow in other ways. This overflow or overflow may cause the side of the cryogenic storage container to generate cooling and temperature gradients. In some cases, local cooling or temperature gradients may reduce the performance of the container, such as reducing the sealing of the vacuum port or other aspects of the container. Therefore, a kind of protective cover is needed to protect the performance of the cryogenic storage container from the cooling influence caused by overflow and overflow. Summary of the Invention

[0006] In general, one aspect of the subject matter described herein is a vapor shield mechanism. A vapor shield system can include a cryogenic storage container having an opening. The container can have a pump-out port. The vapor shield system can also include a vapor shield having a collar and a pump-out port protector. In various examples, the collar of the vapor shield is attached to the opening of the cryogenic storage container and defines an opening in the collar of the vapor shield. The opening can be located in the center of the collar of the vapor shield.

[0007] These and other embodiments may optionally include one or more of the following features. A pump-out port guard may be positioned adjacent to the pump-out port to allow fluid overflow from the cryogenic storage container to be redirected away from the port. The vapor shield may be removable from the cryogenic storage container. The system may further include a notch configured to direct fluid. The pump-out port guard may be at an angle of at least 30 degrees to the notch. The notch may be configured to allow fluid overflow. The cryogenic storage container may further include a lid configured to fit into the opening of the cryogenic storage container. The cryogenic storage container may further include a payload sleeve configured to be inserted into the opening of the cryogenic storage container, the payload sleeve comprising a protrusion configured to fit into the notch of the vapor shield.

[0008] In another aspect, the subject matter can be a vapor guard. The vapor guard may include a collar configured to attach to an opening of a cryogenic storage container. The vapor guard may include a pump-out port protector connected to the collar, wherein the pump-out port protector is positioned adjacent to the pump-out port of the cryogenic storage container. The vapor guard may include a notch in the collar, wherein the notch is configured to provide a passage for fluid to overflow from the cryogenic storage container.

[0009] In another aspect, a method is provided. The method may include placing a payload sleeve into an opening of a cryogenic storage container. The cryogenic storage container may have a pump-out port and a vapor shield. The method may include pouring a fluid coolant into the opening of the cryogenic storage container. The method may include directing the fluid coolant through the vapor shield around the pump-out port. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The subject matter of the present disclosure is particularly pointed out and distinctly claimed in the concluding portion of the specification. However, a more complete understanding of the present disclosure may be best obtained by referring to the detailed description and claims when considered in conjunction with the following illustrative drawings. In the following figures, like reference numerals refer to similar elements and steps in the figures.

[0011] Figure 1 shows an exploded view of an exemplary cryogenic storage container including a vapor shield according to various embodiments;

[0012] Figure 2A and Figure 2B shows a perspective view of an exemplary vapor shield according to various embodiments;

[0013] Figure 3A shows a top view of a vapor shield including notches according to various embodiments;

[0014] Figure 3B shows a top view of a vapor shield including a plurality of notches according to various embodiments;

[0015] Figure 3C shows a top view of a vapor shield including fasteners according to various embodiments;

[0016] Figure 3D shows a top view of a vapor shield including a fastener and a plurality of notches according to an aspect of the present invention;

[0017] Figure 4A shows a vapor shield attached to a Dewar according to various embodiments;

[0018] Figure 4B shows a bottom portion of a vapor shield according to various embodiments;

[0019] Figure 5A shows a bottom portion of a vapor shield attachable by fasteners according to various embodiments;

[0020] Figure 5B shows a cross-sectional view of a vapor shield attachable by fasteners according to various embodiments;

[0021] Figure 5C shows an exploded view of a vapor shield attached to a Dewar via fasteners according to various embodiments;

[0022] Figure 6A shows a top view of a vapor shield attachable by a clip according to various embodiments;

[0023] Figure 6B shows a bottom view of a vapor shield attachable by clips according to various embodiments;

[0024] Figure 6C shows a cross-sectional view of a vapor shield attachable by a clip according to various embodiments;

[0025] Figure 6D shows another bottom view of a vapor shield attachable by clips according to various embodiments;

[0026] Figure 6E shows a vapor shield attachable by clips and associated fasteners according to various embodiments;

[0027] Figure 6F-6G shows a perspective view of a vapor shield attachable and attached to a Dewar via a clamp according to various embodiments; and

[0028] Figure 7 Methods of using a vapor shield according to various embodiments are shown. DETAILED DESCRIPTION

[0029] Disclosed herein are systems, devices, and / or methods for protecting a feature of a cryogenic storage container, such as a pump-out port of a cryogenic storage container.

[0030] refer to Figure 1 , shows a Dewar flask 100 according to various embodiments. Figure 1 An exemplary cryogenic storage container (or dewar 100) is shown. Throughout this application, the dewar 100 may be interchangeably referred to as a cryogenic storage container or simply as a container. The dewar 100 may include a body 110, a payload sleeve 130, and a lid 140.

[0031] In various embodiments, the body 110 of the dewar 100 can define an opening 122. The opening 122 can be a hole defined through the top of the dewar 100. The hole can provide a passage for inserting the payload sleeve 130 into the dewar 100. The hole can allow cryogen to be filled into the body 110 of the dewar 100. The hole can allow a payload to be placed into or removed from the body 110 of the dewar 100. The cap 140 can be configured to correspond in shape to the opening 122 and provide at least a partial closure of the opening 122 when placed in and / or over the opening 122.

[0032] In various embodiments, the body 110 of the dewar flask 100 may include a pump-out port 114. In various embodiments, the pump-out port 114 may be an opening and / or a valve in the dewar flask 100 to allow gas or liquid to be discharged from the space between the inner and outer walls of the dewar flask. The pump-out port 114 may be a valve, other pressure relief port, or other structure designed to selectively release gas flow. For example, the pump-out port 114 can be used to evacuate one or more internal spaces, such as the area between the inner and outer walls of the dewar flask 100, in order to enhance the thermal insulation of the inner compartment of the inner wall. This internal space may be referred to as a "vacuum space." In various embodiments, the pump-out port 114 may be positioned near the opening 122 of the dewar flask 100. For example, when the dewar flask 100 is positioned upright, the opening 122 may be located at the top of the dewar flask 100. Additionally, in various embodiments, the pump-out port 114 may be positioned near the top of the dewar flask 100.

[0033] In various embodiments, the vacuum space of the dewar 100 is in fluid communication with a pump-out port 114. The pump-out port 114 can be used to release fluid, such as gas, from the vacuum space of the dewar 100. A pump can be attached to the pump-out port 114 and activated to remove gas from the vacuum space, thereby forming an insulating envelope between the inner and outer walls of the dewar.

[0034] The pump-out port 114 can be positioned at an upper portion of the dewar 100. For example, the pump-out port 114 can be adjacent to a cap 140 that allows access to the storage compartment of the dewar. The cap 140 can be inserted into the top of the dewar 100 to close the storage compartment. The cap 140 can be removed to allow the dewar to be filled with a payload and / or cryogen. During filling, cryogen, associated vapors, and liquids can escape and cool the adjacent pump-out port 114, potentially causing the vacuum seal of the pump-out port 114 to deteriorate and / or leak the vacuum space. Therefore, a vapor shield 120, discussed further herein, can be provided to improve cooling of the pump-out port 114 by escaping vapor or cryogen.

[0035] In various embodiments, the dewar 100 may include a top portion 150. The top portion may be curved. The top portion may have multiple curves and / or compound curves. Thus, the top portion 150 may be a conical top portion 150. The conical top portion 150 may have a vertical truncated cone shape. The conical top portion 150 may be a panel with a wider radius at the bottom and a narrower radius at the top. The pump-out port 114 may be located on the side of the conical top portion 150. The pump-out port 114 may be proximate to the opening 122 of the dewar 100. Any vapor or refrigerant escaping from the dewar may escape through an opening at or near the upper vertex of the conical top portion 150. The upper vertex may be a point on the surface of the conical top portion 150 that has a tangent plane perpendicular to a vector parallel to the insertion and removal path of the cap 140. The escaping vapor or refrigerant may flow downward along the surface of the conical top portion 150 and may contact the pump-out port 114. The vapor shield 120 discussed herein may ameliorate this potential contact.

[0036] As described above, the body 110 of the dewar 100 can include a vapor shield 120. In various embodiments, the vapor shield 120 can be removably attached to the dewar 100. In various embodiments, the vapor shield 120 can include a pump-out port guard 126. In various embodiments, the pump-out port guard 126 can be a curved protective structure. In various embodiments, the pump-out port guard 126 can be configured to improve contact of spilled cryogen or related vapor with the pump-out port 114. For example, the pump-out port guard 126 of the vapor shield 120 can be positioned near and / or above the pump-out port 114 to allow fluid overflowing from the cryogenic storage container to be directed away from the pump-out port 114.

[0037] The pump-out port guard 126 can be a hood-like structure positioned above the pump-out port 114 that is configured to direct fluid overflowing from the dewar 100 away from the pump-out port 114. The pump-out port guard 126 can be configured to divert the fluid so that it flows away from the pump-out port 114. An advantage of this embodiment is that the fluid does not contact the pump-out port 114, thereby potentially preventing the port from cooling or freezing, which could adversely affect the sealing performance of the port. In various embodiments, the vapor shield 120 can be attached to and / or removed from the dewar 100. In various embodiments, the pump-out port guard 126 can be directly attached to the dewar 100 or can be removably attached to the dewar 100.

[0038] In various embodiments, vapor shield 120 can include a collar 124. In various embodiments, collar 124 can be an at least partially circular structure that is attached to or integrally formed with pump outlet port guard 126.

[0039] The collar 124 of the vapor shield 120 can be removably attached to the neck of the Dewar 100. In various embodiments, the collar 124 can include a hollow center. For example, as in conjunction with Figure 2A and Figure 2B As described in further detail, collar 124 may have a center that defines an opening in vapor shield 120 .

[0040] Continue to refer Figure 1 In various embodiments, the collar 124 can be attached to the dewar 100 adjacent to the opening 122 of the dewar 100. In various embodiments, the collar 124 can be removable from the dewar 100. In various embodiments, the vapor shield 120 and / or the collar 124 can include a plurality of holes or channels that contain an absorbent material. For example, the collar 124 and / or the vapor shield 120 can include holes or channels containing cork or other absorbent material to absorb the fluid. Thus, as fluid is poured into the dewar 100, the fluid may accidentally splash onto the vapor shield 120 and be absorbed by the absorbent material.

[0041] In various embodiments, vapor shield 120 can be attached to body 110 of dewar 100 using a material such as epoxy to allow vapor shield 120 to be attached and removed as desired. In various embodiments, vapor shield 120 can be permanently attached to dewar 100.

[0042] In various embodiments, a payload sleeve 130 can be inserted into the dewar 100. The payload sleeve 130 can be configured to be inserted into the opening 122 of the body 110 of the dewar 100. In various embodiments, the payload sleeve 130 can also include a protrusion 132 and a payload holder 134. The protrusion 132 can extend upward from the payload holder 134 to allow a user to more easily insert or remove the payload holder 134 from the dewar 100.

[0043] In various embodiments, vapor shield 120 can include a notch 128. In various embodiments, notch 128 can be located on collar 124 of vapor shield 120. Notch 128 can be a channel or groove in collar 124 of vapor shield 120. Notch 128 can extend radially through collar 124. In various embodiments, notch 128 can be configured to direct overflowing fluid out of dewar 100 and away from pump-out port 114. For example, as dewar 100 fills with fluid and the fluid overflows, the overflow can flow out of notch 128. In various embodiments, notch 128 can be configured to receive protrusion 132. For example, protrusion 132 can be inserted into notch 128 to prevent movement during transport.

[0044] In various embodiments, the dewar 100 can further include a cap 140. For example, the cap 140 can be attached to the dewar 100 to close the body 110. In various embodiments, the cap 140 can be inserted into the opening 122 of the dewar 100.

[0045] refer to Figure 2A and Figure 2B , showing vapor shield 120 from various angles. In various embodiments, pump outlet port shield 126 can be curved to direct fluid to flow down the side. Pump outlet port shield 126 can serve as a shield to protect pump outlet port 114. Vapor shield 120 can include an adhesive or absorbent material inside collar 124.

[0046] In various embodiments, the collar 124 may include an outer wall 232. In various embodiments, the outer wall 232 may extend vertically. In various embodiments, the outer wall 232 may extend partially vertically and include a lip and a bottom. For example, the lip at the bottom of the outer wall 232 may protrude beyond the vapor shield. The collar 124 may also include a circular top 136. The circular top 136 may be a circular panel extending radially about a center point with a hollow center. The circular top may connect to the outer wall 232 at an outer radius. The collar 124 may also include an inner collar portion 234. In various embodiments, the inner collar portion 234 defines an opening in the vapor shield 120.

[0047] In various embodiments, the vapor shield 120 can include an attachment fixture 138. The attachment fixture 138 can be used to attach the vapor shield 120 to the body 110 of the dewar 100. In various embodiments, the attachment fixture 138 can include one or more attachment tabs to secure the vapor shield 120 to the body 110 of the dewar 100. The tabs can be press-fit or snap-fit ​​to the dewar 100, or can be secured using epoxy, adhesive, glue, or other materials. In various embodiments, the attachment fixture 138 can include channels to allow the attachment fixture 138 to flex and securely attach to the body 110 of the dewar 100.

[0048] In various embodiments, the vapor shield 120 may include an absorbent material. For example, the vapor shield 120 may be a hollow structure with absorbent material inside. In various embodiments, the vapor shield 120 may include channels or grooves containing the absorbent material. For example, as fluid is poured into the dewar flask 100, the vapor shield 120 may contain an absorbent material configured to receive and absorb the fluid to prevent spillage. The absorbent material may be made of a sponge or other material capable of absorbing fluid, such as a liquid or vapor. In various embodiments, the absorbent material may be removable or replaceable. Furthermore, in various embodiments, the absorbent material may be configured to dry between uses.

[0049] Now refer to Figures 3A-3D , shows a top view of the vapor shield 120 according to various embodiments. The vapor shield 120 can include a collar 124. The vapor shield 120 can include one or more notches 128. The notches 128 can be positioned at least 30 degrees from the center of the pump-out port guard 126. For example, the notches 128 can be positioned away from the pump-out port guard 126 to direct fluid overflow away from the pump-out port 114. In various embodiments, the notches 128 can be positioned less than or equal to 30 degrees from the center of the pump-out port guard 126. For example, the notches 128 can direct fluid overflow to a location adjacent to the pump-out port guard 126, and the pump-out port guard 126 can divert fluid away from the pump-out port 144.

[0050] refer to Figure 3B and Figure 3D In various embodiments, vapor shield 120 can include two or more notches 128. For example, collar 124 of vapor shield 120 can include two or more notches 128. The two or more notches 128 can be equally spaced around collar 124. In various embodiments, the two or more notches 128 can each be configured to direct fluid through the notch. For example, the two or more notches 128 can disperse fluid flow to the sides of the dewar and further prevent the fluid from contacting pump outlet port 144.

[0051] refer to Figure 3C and Figure 3D In various embodiments, the vapor shield 120 can receive fasteners 302. The fasteners 302 can be used to attach the vapor shield 120 to the dewar 100. The fasteners 302 can be pins, screws, bolts, or other devices that connect the vapor shield 120 to the body 110 of the dewar 100. The vapor shield 120 can include one or more fasteners 302. In various embodiments, the fasteners 302 can be openings configured to receive pins, screws, bolts, or other devices that connect the vapor shield 120 to the body 110 of the dewar 100. The body 110 of the dewar 100 can include slots or connection points for the fasteners 302 to connect to the vapor shield 120.

[0052] refer to Figure 4A and Figure 4B , a vapor shield 120 can be attached to the Dewar body 110. The vapor shield 120 can be attached by an adhesive or other connecting material as described herein. The vapor shield 120 can be positioned so that the pump-out port guard 126 is located above the proximal end of the pump-out port 114. Figure 4B , showing the bottom of the vapor shield 120. The vapor shield 120 can be hollow. The vapor shield can have an inner wall 402. When the vapor shield 120 is attached to the dewar body 110, the inner wall 402 can extend to the neck of the dewar body 110. In other embodiments, the inner wall 402 extends annularly around the neck of the dewar body 110.

[0053] refer to Figures 5A-5C , vapor shield 120 can include fasteners 502. Fasteners 502 can include channels extending in collar 124 of vapor shield 120. Vapor shield 120 can include one or more fasteners 502. Fasteners 502 can be positioned equidistant from one another on collar 124. Fasteners 502 can be configured to receive bolts, screws, or other fastening devices that attach vapor shield 120 to dewar body 110.

[0054] refer to Figure 5C, a fastener attachment system 500 is shown. In various embodiments, the vapor shield 120 can be attached to the dewar body 110 via the fastener attachment system 500. The fastener attachment system 500 can include one or more fasteners 502. The fastener 502 can be similar to the fastener 302. The fastener attachment system 500 can include a fastener bolt 504. The fastener bolt 504 can be configured to attach to the fastener 502. For example, the fastener bolt 504 can be inserted into the fastener 502. The fastener attachment system 500 can include a collar attachment plate 510. The collar attachment plate 510 can include a receiving slot 512. The receiving slot 512 can be configured to receive the fastener bolt 504. The collar attachment plate 510 can be attached to the neck of the dewar body 110.

[0055] refer to Figure 6A-6G , vapor shield 120 may include a clamp fastener 602. Clamp fastener 602 may include a channel through vapor shield 120. The channel may be a horizontal channel. The clamp may also include a notch 128 positioned in the channel of clamp fastener 602 to allow the clamp to be tightened. Vapor shield 120 may include an inner wall 622. Clamp fastener 602 may be positioned on a side of vapor shield 120 opposite pump outlet port guard 126.

[0056] refer to Figure 6F and Figure 6G , and continue to refer to Figures 6A-6E , a clamp attachment system 600 is shown. In various embodiments, the vapor shield 120 can be attached to the dewar body 110 via the clamp attachment system 600. The clamp attachment system 600 can include a clamp fastener 602. The clamp fastener 602 can include a bolt 604 and a nut 606, wherein the bolt 604 and nut 606 can be used to tighten the vapor shield 120 to the neck of the dewar body 110. As the bolt 604 and nut 606 are tightened, the vapor shield 120 can be compressively clamped to the neck of the dewar body. The clamp fastener 602 can be used to attach the vapor shield 120 to the neck of the body 110 of the dewar 100.

[0057] Now refer to Figure 7, a method 700 for using a vapor shield is provided. In various embodiments, the method 700 may include placing a payload sleeve in an opening of a cryogenic storage container (block 702). The cryogenic storage container may be a dewar or an insulated container. The cryogenic storage container may have a pump-out port and a vapor shield. The method 700 may also include pouring a coolant into the opening of the cryogenic storage container (block 704). For example, the coolant may be a liquid coolant, such as liquid nitrogen or other cooling liquid. The method 700 may also include directing an overflow portion of the coolant around the pump-out port through the vapor shield (block 706). In various embodiments, the vapor shield may include a pump-out port protector positioned adjacent to the pump-out port to allow fluid overflow from the cryogenic storage container to be redirected away from the port.

[0058] In various embodiments, method 700 may further include removing the vapor shield from the cryogenic storage container. For example, the vapor shield may be removably attached to the cryogenic storage container. In various embodiments, method 700 may further include attaching a cap to the opening of the cryogenic storage container. For example, the cap may be inserted into the opening of a Dewar flask to seal or partially seal the cryogenic storage container.

[0059] While preferred embodiments of the present disclosure have been shown and described, it will be apparent to those skilled in the art that changes and modifications can be made therein without departing from the spirit of the disclosure, the scope of which is defined by the following claims.

[0060] Benefits, other advantages, and solutions to problems have been described herein with reference to specific embodiments. In addition, the connecting lines shown in the various figures included herein are intended to represent exemplary functional relationships and / or physical connections between various elements. It should be noted that many alternative or additional functional relationships or physical connections may exist in actual systems. However, these benefits, advantages, solutions to problems, and any elements that may cause any benefit, advantage, or solution to occur or become more significant are not to be construed as key, essential, or basic features or elements of this disclosure.

[0061] Thus, the scope of the present disclosure is limited only by the appended claims in which, unless explicitly stated otherwise, reference to an element in the singular is not intended to mean "one and only one," but rather "one or more." It should be understood that references to "a," "an," and / or "the" may include one or more than one, and references to singular items may also include plural items, unless specifically stated otherwise. All range and ratio limitations disclosed herein may be combined.

[0062] Furthermore, when a phrase similar to "at least one of A, B, and C" is used in a claim, it is intended that the phrase be interpreted to mean A can exist alone in an embodiment, B can exist alone in an embodiment, C can exist alone in an embodiment, or any combination of elements A, B, and C can exist in a single embodiment; for example, A and B, A and C, B and C, or A, B, and C. Different cross-hatching is used throughout the drawings to indicate different components, but not necessarily to indicate the same or different materials.

[0063] The steps described in any method or process description may be performed in any order and are not necessarily limited to the order presented. In addition, any reference to a single embodiment includes multiple embodiments, and any reference to more than one component or step may include a single embodiment or step. The elements and steps in the figures are shown for simplicity and clarity and are not necessarily reproduced in any particular order. For example, steps that can be performed simultaneously or in different orders are shown in the figures to help enhance understanding of the embodiments of the present invention.

[0064] Any reference to attaching, fixing, connecting, or the like may include permanent, removable, temporary, partial, complete, and / or any other possible attachment options. In addition, any reference to no contact (or similar phrases) may also include reduced contact or minimal contact. Surface hatching may be used throughout the drawings to indicate different parts or areas, but not necessarily to indicate the same or different materials. In some cases, reference coordinates may be specific to each drawing.

[0065] Systems, methods, and apparatus are provided herein. In the detailed description herein, reference to "one embodiment," "an embodiment," "various embodiments," etc., indicates that the embodiment may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes the particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is assumed that those skilled in the art will understand how to implement these features, structures, or characteristics in conjunction with other embodiments, whether or not explicitly described. After reading the description, those skilled in the relevant art will understand how to implement the present disclosure in alternative embodiments.

Claims

1. A vapor protection system comprising: a cryogenic storage container having an opening and a pump-out port; as well as a vapor shield comprising a collar and a pump outlet port guard; wherein the collar of the vapor shield is attached to the opening of the cryogenic storage container and defines an aperture therein.

2. The system according to claim 1, wherein: The pump-out port guard is positioned adjacent the pump-out port to allow fluid overflow from the cryogenic storage container to be directed away from the pump-out port.

3. The system according to claim 1, wherein: The vapor shield is removable from the cryogenic storage container.

4. The system according to claim 1, wherein: Also included is a notch configured to direct fluid overflow.

5. The system according to claim 4, characterized in that The pump outlet port protector is at an angle of at least 30 degrees to the notch.

6. The system according to claim 1, wherein: The cryogenic storage container also includes a cover configured to fit into the opening of the cryogenic storage container.

7. The system according to claim 4, wherein: Also included is a payload sleeve configured to be inserted into the opening of the cryogenic storage container, the payload sleeve including a protrusion configured to fit into the slot of the vapor shield.

8. A vapor protection system comprising: a collar configured to attach to an opening of the cryogenic storage container; as well as A pump-out port guard is connected to the collar, wherein the pump-out port guard is positioned adjacent the pump-out port of the cryogenic storage container.

9. The device according to claim 8, characterized in that Also included is a notch in the collar, wherein the notch is configured to provide a passage for directing overflow of fluid from the cryogenic storage container.

10. The device according to claim 8, characterized in that The pump-out port protector is configured to allow fluid overflow from the cryogenic storage container to be redirected away from the pump-out port.

11. The device according to claim 8, characterized in that The vapor shield assembly is removably attached to the cryogenic storage container.

12. The device according to claim 9, characterized in that The pump outlet port protector is at an angle of at least 30 degrees to the notch.

13. The device according to claim 9, characterized in that Also included is a payload sleeve configured to be inserted into the opening of the cryogenic storage container, the payload sleeve including a protrusion configured to fit into the slot of the vapor shield assembly.

14. A method of using a vapor shield, comprising: placing a payload sleeve in an opening of a cryogenic storage container having a pump-out port and a vapor shield; pouring a coolant into the opening of the cryogenic storage container; as well as An overflow portion of the coolant is directed through the vapor shield around the pump-out port.

15. The method according to claim 14, characterized in that The vapor shield includes a pump-out port protector positioned above the pump-out port for directing fluid away from the pump-out port.

16. The method according to claim 14, characterized in that Also includes: The vapor shield is removed from the cryogenic storage container.

17. The method according to claim 15, characterized in that Also includes: A notch configured to direct fluid overflow, wherein the notch is angled at least 30 degrees from a center of the pump outlet port guard.

18. The method according to claim 14, characterized in that Also includes: A lid is attached to the opening of the cryogenic storage container.

19. The method according to claim 17, wherein The payload sleeve includes a protrusion configured to fit into the slot of the vapor shield.

20. The method according to claim 17, wherein Also includes: Inserting the protrusion of the payload sleeve into the notch of the vapor shield.

21. A storage container vapor shield system comprising: a cryogenic storage container, the cryogenic storage container comprising a pump-out port; a vapor shield, the vapor shield including a pump outlet port shield; wherein the pump-out port protector is configured to be attached to the cryogenic storage container such that when the cryogenic storage container is in an upright position, the pump-out port protector is positioned above the pump-out port; The pump outlet port protection member is configured to direct fluid overflow away from the pump outlet port.

22. The system according to claim 21, wherein: The pump-out port protector is removable from the cryogenic storage container.

23. The system according to claim 21, wherein: The vapor shield includes a notch configured to direct overflow of fluid from the cryogenic storage container.

24. The system according to claim 21, wherein: The pump outlet port protection member is a cover-shaped slope structure, configured to partially cover the pump outlet port.

25. The system according to claim 21, wherein The vapor shield is attached to the cryogenic storage container by clips configured to secure the vapor shield to the cryogenic storage container.

26. The system according to claim 21, wherein The vapor shield is attached to the cryogenic storage container by one or more fasteners.

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