Safety valve for low-temperature heat insulation and cold insulation box and low-temperature heat insulation and cold insulation box

Abstract

The utility model provides a safety valve for a low-temperature heat insulation and cold insulation box and the low-temperature heat insulation and cold insulation box. The safety valve for the low-temperature heat insulation and cold insulation box structurally comprises a limiting part, the top of a shell ring of the low-temperature heat insulation and cold insulation box is installed, and a gap is formed between the top end of the shell ring and the limiting face of the limiting part; and the cover plate is arranged at the top end of the shell ring in a covering mode, and the cover plate can move between the top end of the shell ring and the limiting face. The safety valve for the low-temperature heat insulation and cold insulation box and the low-temperature heat insulation and cold insulation box can solve the problem that a safety valve of an existing low-temperature heat insulation and cold insulation box cannot be normally opened after overpressure is caused due to the fact that the safety valve is prone to rusting.

Description

Technical Field

[0001] The present application relates to the technical field of low-temperature thermal insulation cold-keeping boxes, and in particular to a safety valve for low-temperature thermal insulation cold-keeping boxes and the low-temperature thermal insulation cold-keeping box. Background Art

[0002] A cryogenic insulated cold storage box is a sealed steel structure closed system, such as an air separation cold storage box. The interior of the cryogenic insulated cold storage box is equipped with a large number of cryogenic equipment, cryogenic pipelines and pearlescent sand insulation.

[0003] When a cryogenic insulated cold storage container expands due to external heat transfer for some reason, the enclosure of the cold storage container may rupture due to overpressure. The cryogenic insulated cold storage container safety valve is a component that provides pressure relief to prevent overpressure in the enclosure.

[0004] Existing safety valves for cryogenically insulated cold storage containers typically open by rotating the opening and closing member around a fixed axis. However, due to long-term exposure to the elements, these valves are susceptible to rust. Consequently, existing safety valves often fail to open properly in the event of overpressure due to factors such as rust, sticking, and shaft failure. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a safety valve and a low-temperature insulated cold-keeping box for a low-temperature insulated cold-keeping box, so as to solve the problem that the safety valve of the existing low-temperature insulated cold-keeping box is easily corroded, resulting in the safety valve being unable to open normally after overpressure.

[0006] According to the first aspect of the present invention, a safety valve for a low-temperature thermal insulation box is provided, wherein the safety valve for the low-temperature thermal insulation box includes: a limiting portion, installed on the top of the cylinder section of the low-temperature thermal insulation box, and a gap is provided between the top end of the cylinder section and the limiting surface of the limiting portion; and a cover plate, covered on the top end of the cylinder section, and the cover plate can move between the top end of the cylinder section and the limiting surface.

[0007] Preferably, the limiting portion includes: a guide rod, the bottom end of the guide rod is connected to the side wall of the cylinder section, the top end of the guide rod extends in a direction close to the axis of the cylinder section, and the top end of the guide rod is located at the top of the cylinder section; a top plate, arranged at the bottom of the top end of the guide rod, and the limiting surface is the bottom surface of the top plate.

[0008] Preferably, there are multiple guide rods, and the multiple guide rods are arranged at intervals on the outer circumference of the cylinder section, and the top ends of the multiple guide rods are connected to the same top plate.

[0009] Preferably, the number of the guiding rods is four, the top plate is square-shaped, and the tops of the four guiding rods are respectively connected to the four top corners of the top plate.

[0010] Preferably, the bottom end of the guiding rod extends along the axial direction of the cylinder section, and the top end of the guiding rod extends along the radial direction of the cylinder section.

[0011] Preferably, an external thread is provided at the bottom end of the guiding rod, and the limiting portion further includes a connecting portion. The connecting portion includes: an ear plate connected to the side wall of the cylinder section, the plate surface of the ear plate being perpendicular to the axial direction of the cylinder section; and a limiting nut, the bottom end of the guiding rod passing through the ear plate, and the limiting nut being installed at the bottom end of the guiding rod.

[0012] Preferably, at least two of the limiting nuts are respectively arranged at the upper part and the lower part of the ear plate.

[0013] Preferably, a fitting groove is provided on the bottom surface of the cover plate, and the fitting groove is buckled on the top end of the cylinder section.

[0014] According to a second aspect of the present invention, a cryogenic insulation cold box is provided, wherein the cryogenic insulation cold box includes the safety valve for the cryogenic insulation cold box as described above.

[0015] Preferably, the cryogenic insulation cold box includes a cryogenic insulation cold box main body and a cylinder section. The cylinder section is cylindrical in shape, and the cylinder section is installed on the cryogenic insulation cold box main body.

[0016] For the safety valve for the cryogenic insulation cold box and the cryogenic insulation cold box according to the embodiments of the present invention, the limiting portion is installed on the top of the cylinder section of the cryogenic insulation cold box, and a gap is provided between the top end of the cylinder section and the limiting surface of the limiting portion. The cover plate is covered on the top end of the cylinder section, and the cover plate can move between the top end of the cylinder section and the limiting surface. So under normal circumstances, the cover plate can contact the cylinder section to play a role in sealing and protecting the cryogenic insulation cold box. When the internal pressure of the cryogenic insulation cold box is abnormally high and exceeds the limit, the cover plate will be pushed up and opened under the action of the internal air pressure, so as to achieve pressure relief and protect the outer shell of the cryogenic insulation cold box from being damaged. In this way, it can effectively solve the problem that the safety valve of the existing cryogenic insulation cold box is easily corroded, resulting in the failure of the safety valve to open normally after overpressure.

[0017] To make the above objects, features and advantages of the present application more obvious and understandable, the following specifically provides preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of a safety valve for a cryogenic adiabatic cold storage box and a cryogenic adiabatic cold storage box according to the present utility model.

[0020] Figure 2 It is a schematic diagram of a safety valve for a cryogenic adiabatic cold storage box according to the present utility model.

[0021] Figure 3 It is a schematic diagram of another embodiment of a safety valve for a cryogenic adiabatic cold storage box according to the present utility model.

[0022] Reference numerals: 1 - limiting part; 11 - guiding rod; 12 - top plate; 13 - ear plate; 14 - limiting nut; 2 - cover plate; 20 - mating groove; 3 - cylinder section; 4 - cryogenic adiabatic cold storage box body. Detailed embodiments

[0023] The following detailed embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices, and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, changes that will be apparent after understanding the disclosure of the present application can be made, except for operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and brevity.

[0024] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways of implementing the methods, devices, and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0025] Throughout the specification, when an element such as a layer, region, or substrate is described as being "on" another element, "connected to" another element, "coupled to" another element, "above" another element, or "covering" another element, it can be directly "on" the other element, "connected to" the other element, "coupled to" the other element, "above" the other element, or "covering" the other element, or there can be one or more other elements intervening between them. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly coupled to" another element, "directly above" another element, or "directly covering" another element, there can be no other elements intervening between them.

[0026] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of them.

[0027] Although terms such as "first", "second", and "third" may be used herein to describe various components, elements, regions, layers, or parts, these components, elements, regions, layers, or parts are not limited by these terms. Rather, these terms are only used to distinguish one component, element, region, layer, or part from another. Thus, the first component, element, region, layer, or part so called in the examples described herein could also be termed the second component, element, region, layer, or part without departing from the teachings of the examples.

[0028] For ease of description, spatial relationship terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another as shown in the figures. Such spatial relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, an element described as "above" or "upper" relative to another element will then be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientation of "above" and "below" depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0029] The terms used herein are for the purpose of describing various examples only and are not intended to limit the examples. Unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. The terms "comprising", "including" and "having" enumerate the stated features, quantities, operations, components, elements and / or combinations thereof that exist, but do not preclude the existence or addition of one or more other features, quantities, operations, components, elements and / or combinations thereof.

[0030] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that occur during manufacturing.

[0031] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application.

[0032] As Figures 1 to 3 shown, according to the first aspect of the present utility model, a safety valve for a cryogenic adiabatic cold storage box is provided. The safety valve for the cryogenic adiabatic cold storage box includes a limiting portion 1 and a cover plate 2.

[0033] In the following description, reference will be made to Figures 1 to 3 specifically describe the specific structures of the above components of the safety valve for the cryogenic adiabatic cold storage box and the connection relationships of the above components.

[0034] As Figures 1 to 3 shown, in the embodiment, the limiting portion 1 can be installed on the top of the cylinder section 3 of the cryogenic adiabatic cold storage box. There can be a gap between the top end of the cylinder section 3 and the limiting surface of the limiting portion 1 (which can be the side surface of the limiting portion 1 facing the top end of the cylinder section 3). The cover plate 2 can be covered on the top end of the cylinder section 3, and the cover plate 2 can move between the top end of the cylinder section 3 and the limiting surface. So that under normal circumstances, the cover plate 2 can contact the cylinder section 3, playing a role in sealing and protecting the cryogenic adiabatic cold storage box. When the pressure inside the cryogenic adiabatic cold storage box is abnormally high and exceeds the limit, the cover plate 2 will be lifted and opened under the action of the internal air pressure, thereby achieving pressure relief and protecting the outer shell of the cryogenic adiabatic cold storage box from being damaged.

[0035] Preferably, as Figures 1 to 3As shown, in the embodiment, the cylinder section 3 can be a cylindrical barrel. The outer wall of the cylinder section 3 can be welded to the main body 4 of the cryogenic adiabatic cold storage box, and the cylinder section 3 communicates the inside of the cryogenic adiabatic cold storage box with the outside. The cylinder section 3 can be arranged as such, and the cover plate 2 can be horizontally covered on the top end of the cylinder section 3 to play a role of sealing and protection. The cover plate 2 can be made of carbon steel or stainless steel according to requirements, and the other components of the safety valve for the cryogenic adiabatic cold storage box can be made of carbon steel.

[0036] Preferably, as Figures 1 to 3 shown, in the embodiment, the limiting part 1 can include a guiding rod 11 and a top plate 12. Among them, the guiding rod 11 can be bent into an L shape. The bottom end of the guiding rod 11 can be detachably connected to the side wall of the cylinder section 3. The top end of the guiding rod 11 is located above the top end of the cylinder section 3, and the guiding rod 11 can extend in a direction close to the axis of the cylinder section 3. Preferably, the bottom end of the guiding rod 11 can extend along the axial direction of the cylinder section 3, and the top end of the guiding rod 11 can extend along the radial direction of the cylinder section 3. The top plate 12 can be welded to the bottom of the top end of the guiding rod 11. Preferably, the limiting surface can be the bottom surface of the top plate 12, that is, the cover plate 2 can move between the top end of the cylinder section 3 and the bottom surface of the top plate 12, and the top plate 12 can be arranged parallel to the cover plate 2.

[0037] Preferably, as Figures 1 to 3 shown, in the embodiment, the number of the guiding rods 11 can be multiple, and the multiple guiding rods 11 can be arranged at intervals on the outer periphery of the cylinder section 3. Specifically, the multiple guiding rods 11 can be arranged at equal intervals along the circumferential direction on the outer periphery of the cylinder section 3. And the top ends of the multiple guiding rods 11 can be connected to the same top plate 12 to ensure that the top plate 12 can be stably arranged above the top end of the cylinder section 3.

[0038] Furthermore, preferably, as Figure 1 and Figure 2 shown, in the embodiment, the number of the guiding rods 11 can be four. In this case, the shape of the top plate 12 can be square. The four guiding rods 11 can be arranged at equal intervals along the circumferential direction on the outer periphery of the cylinder section 3. The top ends of the four guiding rods 11 can be respectively connected to the four top corners of the top plate 12.

[0039] However, it is not limited thereto. As Figure 1 and Figure 3 shown, in the embodiment, the number of the guiding rods 11 can be three. In this case, the shape of the top plate 12 can be triangular. The three guiding rods 11 can be arranged at equal intervals along the circumferential direction on the outer periphery of the cylinder section 3. The top ends of the three guiding rods 11 can be respectively connected to the three top corners of the top plate 12.

[0040] In addition, preferably, as Figures 1 to 3 shown, in the embodiment, the limiting part 1 may further include a connecting part for connecting the bottom end of the guiding rod 11 to the outer wall of the cylinder section 3. Specifically, an external thread may be provided at the bottom end of the guiding rod 11. The connecting part may include an ear plate 13 and a limiting nut 14. Among them, the ear plate 13 may be welded to the side wall of the cylinder section 3. The plate surface of the ear plate 13 may be perpendicular to the axial direction of the cylinder section 3. The number of the ear plates 13 may be equal to the number of the guiding rods 11, and the setting position of the ear plates 13 may correspond to the setting position of the guiding rods 11. The bottom end of the guiding rod 11 may pass through the ear plate 13. The limiting nut 14 may be installed at the bottom end of the guiding rod 11 to position the guiding rod 11.

[0041] Furthermore, preferably, as Figures 1 to 3 shown, in the embodiment, when at least two of the limiting nuts 14 are installed at the bottom end of the guiding rod 11, they may be respectively arranged at the upper and lower parts of the ear plate 13, so as to position the bottom end of the guiding rod 11 in the vertical direction and adjust the height of the top plate 12.

[0042] Preferably, as Figure 1 shown, in the embodiment, a mating groove 20 may further be provided on the bottom surface of the cover plate 2. Specifically, the mating groove 20 may be an annular groove. The mating groove 20 may be fastened downwardly on the top end of the cylinder section 3 to achieve the function of sealing protection.

[0043] In addition, according to the second aspect of the present invention, a cryogenic adiabatic cold storage box is provided, and the cryogenic adiabatic cold storage box includes the safety valve for the cryogenic adiabatic cold storage box as described above.

[0044] Preferably, as Figure 1 shown, in the embodiment, the cryogenic adiabatic cold storage box includes a cryogenic adiabatic cold storage box main body 4 and a cylinder section 3. The shape of the cylinder section 3 may be cylindrical and is installed on the cryogenic adiabatic cold storage box main body 4. The cylinder section 3 communicates with the interior of the cryogenic adiabatic cold storage box.

[0045] During use, the cover plate 2 contacts the cylinder section 3, which can play a role in sealing and protecting the cryogenic adiabatic cold storage box. When the pressure inside the cryogenic adiabatic cold storage box is abnormal and exceeds the limit, the cover plate 2 will be pushed up and opened under the action of the internal air pressure, so as to achieve pressure relief and protect the outer shell of the cryogenic adiabatic cold storage box from being damaged. With such a setting, the original screwing motion of the safety valve can be changed to an easy-to-realize up-and-down motion, that is, the cover plate 2 moves up and down in a preset space, thereby avoiding the problem of being unable to be normally opened due to rust.

[0046] Finally, it should be noted that the above embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting it. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A safety valve for a low-temperature thermal insulation cold storage box, which is provided in the low-temperature thermal insulation cold storage box, characterized in that: The safety valve for the low-temperature insulation box includes: A limiting portion is installed on the top of the cylinder section of the low-temperature heat-insulating cold-keeping box, and a gap is provided between the top of the cylinder section and the limiting surface of the limiting portion; and A cover plate is arranged on the top end of the cylinder section, and the cover plate can move between the top end of the cylinder section and the limiting surface.

2. The safety valve for a low-temperature heat-insulating cold-keeping box according to claim 1, characterized in that: The limiting portion includes: A guide rod, wherein the bottom end of the guide rod is connected to the side wall of the barrel section, the top end of the guide rod extends in a direction close to the axis of the barrel section, and the top end of the guide rod is located at the top of the barrel section; The top plate is arranged at the bottom of the top end of the guide rod, and the limiting surface is the bottom surface of the top plate.

3. The safety valve for a low-temperature heat-insulating cold-keeping box according to claim 2, characterized in that: There are multiple guide rods, and the multiple guide rods are arranged at intervals on the outer circumference of the cylinder section. The top ends of the multiple guide rods are connected to the same top plate.

4. The safety valve for a low-temperature heat-insulating cold-keeping box according to claim 3, characterized in that: The number of the guide rods is four, the shape of the top plate is square, and the top ends of the four guide rods are respectively connected to the four top corners of the top plate.

5. The safety valve for a low-temperature heat-insulating cold-keeping box according to claim 2, characterized in that: The bottom end of the guide rod extends along the axial direction of the cylinder segment, and the top end of the guide rod extends along the radial direction of the cylinder segment.

6. The safety valve for a low-temperature heat-insulating cold-keeping box according to claim 2, characterized in that: The bottom end of the guide rod is provided with an external thread, and the limiting portion further includes a connecting portion, which includes: an ear plate connected to the side wall of the cylinder segment, wherein the plate surface of the ear plate is perpendicular to the axial direction of the cylinder segment; as well as A limiting nut, the bottom end of the guide rod is passed through the ear plate, and the limiting nut is installed on the bottom end of the guide rod.

7. The safety valve for a low-temperature heat-insulating cold-keeping box according to claim 6, characterized in that: At least two of the limiting nuts are respectively arranged on the upper part and the lower part of the ear plate.

8. The safety valve for a low-temperature heat-insulating cold-keeping box according to claim 1, characterized in that: The bottom surface of the cover plate is provided with a matching groove, and the matching groove is buckled on the top end of the cylinder section.

9. A low-temperature heat-insulating cold-keeping box, characterized in that: The low-temperature thermal insulation box includes the safety valve for the low-temperature thermal insulation box according to any one of claims 1 to 8.

10. The low-temperature heat-insulating cold-keeping box according to claim 9, characterized in that: The low-temperature thermal insulation cold-keeping box comprises a low-temperature thermal insulation cold-keeping box body and a cylinder section. The cylinder section is cylindrical in shape and is installed on the low-temperature thermal insulation cold-keeping box body.

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