Metal valve cold insulation box

Abstract

The utility model relates to the technical field of cold insulation, in particular to a metal valve cold insulation box which comprises two sets of detachable modules, each module comprises an inner mold and an outer mold, each inner mold comprises a PIR foaming layer and a first damp-proof layer, a valve body is wrapped in each PIR foaming layer, and each outer mold comprises a wear-resistant layer, a foam glass layer, a second damp-proof layer and a protective layer. The second damp-proof layer wraps the first damp-proof layer, the foam glass layer is arranged on the outer side of the second damp-proof layer, the wear-resistant layer is arranged on the outer side of the foam glass layer, the protective layer is arranged on the outer side of the wear-resistant layer, and a groove and a rib are arranged at a connector of the inner mold and are connected in a matched mode, so that the inner mold is combined in a staggered joint mode. According to the metal valve cold insulation box, the inner mold and the outer mold are arranged to be of a detachable structure, and it is guaranteed that the cold insulation box can be rapidly disassembled and assembled; the damp-proof layer of the cold insulation box is arranged to be of a double-layer structure, so that the sealing and cold insulation effects of the cold insulation box are guaranteed; and by arranging the grooves and the convex edges at the interfaces of the inner molds, the two inner molds are connected in a staggered joint manner, so that the cold insulation effect of the cold insulation box is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of cold insulation technology, specifically a metal valve cold insulation box. Background Technology

[0002] In recent years, with the development and progress of modern science and technology, the demand for cryogenic valves in engineering projects has been increasing. Cryogenic valves are widely used in fertilizer, LNG, and petrochemical industries. Besides liquid nitrogen and other liquid inert gases, most media controlled by cryogenic valves are not only flammable and explosive, but also vaporize upon heating or flash evaporation, causing a rapid expansion in volume and easily leading to leaks and explosions.

[0003] Due to the characteristics of the media and the requirements for valve operation at low temperatures, the design, manufacturing, testing, and installation methods of cryogenic valves differ from those of ordinary valves. For cryogenic valves with a sealed cavity structure, special requirements are placed on the valve sealing structure when used with flammable, explosive, and easily vaporized media. Some cryogenic media increase in volume after vaporization; for example, liquefied natural gas (LNG) vaporizes to more than 600 times its liquid state. When the valve is closed and the ambient temperature is relatively high, the cryogenic medium inside the valve body absorbs heat from the environment and gradually vaporizes, causing its volume to rise rapidly. This can lead to overpressure inside the valve, threatening its safety, causing media leakage, or even a fire. Therefore, valve insulation plays a crucial role.

[0004] The existing cold insulation boxes for valves have large gaps in the insulation material, which easily leads to cold leakage and affects the cold insulation effect. Most existing cold insulation boxes are filled with foam material during installation. The foam insulation layer is prone to voids, resulting in loss of cold energy from the valve. In addition, foam molds need to be made on site, which is time-consuming and costly. They cannot be reused and are not energy-saving or environmentally friendly. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a metal valve cold insulation box, which solves the technical problems of inconvenient installation and poor cold insulation effect of existing cold insulation boxes.

[0007] (II) Technical Solution

[0008] This utility model provides the following technical solution: a metal valve cold insulation box, comprising two sets of symmetrically arranged detachable modules, the modules being wrapped around the valve body and pipes. Each module includes an inner mold and an outer mold. The inner side of the inner mold contacts the outer surface of the valve body, and the outer side contacts the inner side of the outer mold. The inner mold includes a PIR foam layer and a first moisture-proof layer, the PIR foam layer enclosing the valve body inside it. The outer mold includes a wear-resistant layer, a foam glass layer, a second moisture-proof layer, and a protective layer. The second moisture-proof layer encloses the first moisture-proof layer inside it. The foam glass layer is located outside the second moisture-proof layer, the wear-resistant layer is located outside the foam glass layer, and the protective layer is located outside the wear-resistant layer. The interface of the inner mold is provided with a groove and a protrusion, the groove and the protrusion being adapted to connect, so that the two inner molds are staggered and joined together.

[0009] Preferably, the protective layer is a metal frame structure and is located on the outermost side of the interface between the two outer molds.

[0010] Preferably, the groove and the ridge are arranged laterally on the same horizontal line, with one side being the groove and the other side being the ridge.

[0011] Preferably, the outer mold has annular connectors on both sides.

[0012] Preferably, the cold box is further provided with pipe insulation layers on both sides to protect the pipes, and the pipe insulation layers are connected to the annular connectors.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides a metal valve cold storage box, which has the following advantages:

[0015] 1. This metal valve cold storage box features a detachable inner and outer mold structure, ensuring quick disassembly and installation, convenient transportation, and saving on-site installation and storage space. A double-layer moisture-proof layer ensures the box's sealing and cold-keeping effects. Grooves and protrusions at the inner mold interface allow for staggered connections between the two inner molds, further enhancing the cold-keeping effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the split structure of an embodiment of a metal valve cold storage box according to the present invention.

[0017] In the diagram: 1. Module; 11. Inner mold; 111. PIR foam layer; 112. First moisture-proof layer; 113. Groove; 114. Raised ridge; 12. Outer mold; 121. Wear-resistant layer; 122. Foam glass layer; 123. Second moisture-proof layer; 124. Protective layer; 125. Circular connector; 2. Valve body; 3. Pipe insulation layer. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a metal valve cold storage box.

[0020] Please see Figure 1 A metal valve cold insulation box includes two symmetrically arranged detachable modules 1. Module 1 wraps around the valve body 2 and the pipe. Module 1 includes an inner mold 11 and an outer mold 12. The inner side of the inner mold 11 contacts the outer surface of the valve body 2, and the outer side contacts the inner side of the outer mold 12. The inner mold 11 includes a PIR foam layer 111 and a first moisture-proof layer 112. The PIR foam layer 111 wraps the valve body 2 inside it. The outer mold 12 includes a wear-resistant layer 121 and foam glass. The inner mold 11 has a glass layer 122, a second moisture-proof layer 123, and a protective layer 124. The second moisture-proof layer 123 encloses the first moisture-proof layer 112 inside it. The foam glass layer 122 is located outside the second moisture-proof layer 123. The wear-resistant layer 121 is located outside the foam glass layer 122. The protective layer 124 is located outside the wear-resistant layer 121. The interface of the inner mold 11 is provided with a groove 113 and a protrusion 114. The groove 113 and the protrusion 114 are matched and connected to make the two inner molds 11 staggered and joined together.

[0021] This utility model discloses a metal valve cold storage box, comprising two sets of detachable modules 1. Module 1 includes two inner molds 11 and two outer molds 12. The two inner molds 11 are arranged opposite each other to form an inner mold cavity, and the two outer molds 12 are arranged opposite each other to form an outer mold cavity. During installation, the inner molds 11 are placed inside the outer molds 12 to enclose the valve body 2 and the pipeline. By setting the modules as detachable structures, it is more convenient to package and transport, saves space for on-site installation and storage, further ensures that the cold storage box can be reused (not less than 30 times), saves energy, reduces carbon emissions, is environmentally friendly, and reduces waste disposal.

[0022] Specifically, the inner mold 11 includes a PIR foam layer 111 and a first moisture-proof layer 112, while the outer mold 12 includes a wear-resistant layer 121, a foam glass layer 122, a second moisture-proof layer 123, and a protective layer 124. The PIR foam layer 111 and the foam glass layer 122 are formed by high-pressure foaming molding, resulting in high density, uniform distribution, and high compressive strength, and can be prefabricated. Both the first and second moisture-proof layers 112 and 123 provide waterproofing and moisture protection, preventing external moisture from entering the valve body and affecting the cold insulation effect. The wear-resistant layer 121 is located on the outermost side of the module, featuring wear resistance and high load-bearing capacity, ensuring the overall strength of the cold insulation box. The protective layer 124 is a metal frame structure, located on the outermost side of the interface between the two outer molds 12, further ensuring the strength of the cold insulation box. By setting a groove 113 and a ridge 114 at the interface of the inner mold 11, with the groove 113 and the ridge 114 arranged laterally on the same horizontal line, one side being a groove and the other side being a ridge, the groove 113 and the ridge 114 are matched and connected, ensuring that the two inner molds 11 are staggered and joined, resulting in a better sealing effect, smaller installation gaps, and better cold insulation effect.

[0023] In a preferred embodiment, refer to Figure 1 The outer mold 12 of the metal valve cold insulation box has annular connectors 125 on both sides. The cold insulation box also has pipe insulation layers 3 on both sides to protect the pipes 3, and these pipe insulation layers 3 are connected to the annular connectors 125. By connecting the annular connectors 125 to the pipe insulation layers 3, a tighter connection between the valve body's end interfaces and the pipes is ensured, preventing any impact on the valve's cold insulation effect.

[0024] This utility model's metal valve cold storage box, by setting the inner mold 11 and outer mold 12 as a detachable structure, ensures that the cold storage box can be quickly disassembled and installed, and is convenient for transportation, saving on-site installation and storage space; by setting the moisture-proof layer of the cold storage box as a double-layer structure, the sealing and cold storage effect of the cold storage box is guaranteed; by setting grooves and protrusions at the interface of the inner mold 11, the two inner molds 11 are connected by staggered joints, further ensuring the cold storage effect of the cold storage box.

[0025] During installation, the inner and outer molds of this metal valve insulation box are first glued together on one side, then the inner and outer molds on the other side are glued together, forming two half-modules. One half of the module is then clipped onto one side of the valve body, and the other half onto the other side. The gap between the two half-modules is then sealed with adhesive, and aluminum foil tape is applied to the gap. This completes the installation. When disassembling the insulation box, the two half-modules can be directly separated, ensuring convenient installation. Furthermore, the outer mold of this insulation box is interchangeable, and the inner mold can be replaced according to changes in the valve body structure, maintaining its usability and making it more economical, saving costs for enterprises.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal valve cold box characterized in that, The application relates to a detachable module, which comprises two groups of symmetrically arranged detachable modules wrapped outside a valve body and a pipeline, wherein the module comprises an inner module and an outer module, the inner side of the inner module is in contact with the outer surface of the valve body, the outer side is in contact with the inner side of the outer module, the inner module comprises a PIR foaming layer and a first moisture-proof layer, the PIR foaming layer wraps the valve body inside, the outer module comprises a wear-resistant layer, a foamed glass layer, a second moisture-proof layer and a protective layer, the second moisture-proof layer wraps the first moisture-proof layer inside, the foamed glass layer is arranged outside the second moisture-proof layer, the wear-resistant layer is arranged outside the foamed glass layer, and the protective layer is arranged outside the wear-resistant layer, recesses and convex edges are arranged at the interfaces of the inner modules, the recesses and the convex edges are connected in a matched mode, and the two inner modules are combined in a staggered mode.

2. The metal valve skid of claim 1, wherein, The protective layer is a metal frame structure and is arranged at the outermost side of the interfaces of the two outer modules.

3. The metal valve skid of claim 1, wherein, The recesses and the convex edges are arranged on the same horizontal line in a transverse mode, one side is a recess and the other side is a convex edge.

4. The metal valve skid of claim 1, wherein, The two sides of the outer module are provided with ring connecting pieces.

5. The metal valved cryogenic tank of claim 1, wherein, The two sides of the cold storage tank are also provided with pipeline cold insulation layers for protecting the pipelines, and the pipeline cold insulation layers are connected with the ring connecting pieces.

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