Pressure balance valve for high-temperature cold storage

Abstract

The utility model relates to the technical field of high-temperature cold storage balance valves, and provides a high-temperature cold storage pressure balance valve which comprises a valve body, a first valve plate and a second valve plate. A vertically-arranged balance channel is arranged in the valve body, a first valve port and a second valve port are correspondingly formed in the top and the bottom of the valve body, a communicating piece is further arranged on the valve body, and the first valve port, the second valve port and the communicating piece are all communicated with the balance channel. The first valve plate is arranged on the first valve port, the second valve plate is arranged on the second valve port and located in the balance channel, one end of the communicating piece is connected with the valve body, and the other end of the communicating piece is located in the high-temperature cold storage. Through the arrangement of the communicating piece, internal pressure can be communicated with the outside through the valve body to achieve exchange, the internal and external pressure difference can be automatically balanced through opening and closing of the first valve plate or the second valve plate, the overall structure is simple, the manufacturing cost is low, and the internal and external pressure difference can be effectively balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature cold storage balance valves, in particular to a high-temperature cold storage pressure balance valve. Background Art

[0002] The temperature of a high-temperature cold storage is usually between 0°C and 15°C, and it is mainly used for storing food or medicine. The related high-temperature cold storage is built by means of an assembly board. This type of high-temperature cold storage has good airtightness to ensure a good stable environment inside the high-temperature cold storage.

[0003] Since there is a difference between the temperature inside the high-temperature cold storage and the external environment temperature, there is a pressure difference between the inside and outside of the high-temperature cold storage. This is not conducive to personnel entering the high-temperature cold storage and will pose certain safety hazards. Moreover, due to the pressure difference between the inside and outside, it may affect the use function of the cold storage.

[0004] In the related art, some existing valve bodies are used to achieve the balance of internal and external pressures. This method has poor effects in the application of high-temperature cold storages, with complex manual or electric control, resulting in poor actual use effects and high layout costs. Summary of the Utility Model

[0005] The utility model provides a high-temperature cold storage pressure balance valve to solve the defects of complex overall structure, high manufacturing and layout costs in the prior art.

[0006] The utility model provides a high-temperature cold storage pressure balance valve, including: a valve body, a first valve plate and a second valve plate; a vertical balance channel is provided inside the valve body, a first valve port is opened at the top of the valve body, a second valve port is opened at the bottom of the valve body, a connecting member is provided on the valve body between the first valve port and the second valve port, and the first valve port, the second valve port and the connecting member are all communicated with the balance channel; the first valve plate is placed on the first valve port, and the first valve plate is used to cooperate with the first valve port to control the opening or closing of the first valve port. The second valve plate is placed on the second valve port and is located inside the balance channel. The second valve plate is used to cooperate with the second valve port to control the opening or closing of the second valve port. One end of the connecting member is connected to the valve body, and the other end of the connecting member is located inside the high-temperature cold storage to balance the internal and external pressures.

[0007] According to the high-temperature cold storage pressure balance valve provided by the utility model, the first valve port is arranged at the top of the balance channel, and the second valve port is arranged at the bottom of the balance channel.

[0008] According to the high-temperature cold storage pressure balance valve provided by the utility model, the caliber of the first valve port is the same as that of the second valve port.

[0009] According to the pressure balance valve for high-temperature cold storage provided by the present utility model, a circular first support plate is provided at the top of the valve body, and the first valve plate is placed on the first support plate.

[0010] According to the pressure balance valve for high-temperature cold storage provided by the present utility model, a limiting cylinder opening is formed between the first support plate and the top surface of the valve body.

[0011] According to the pressure balance valve for high-temperature cold storage provided by the present utility model, a circular second support plate is provided at the bottom of the valve body, and the second valve plate is placed on the second support plate.

[0012] According to the pressure balance valve for high-temperature cold storage provided by the present utility model, the valve body is constructed as a cylindrical structure, and the balance channel is arranged on the axis of the valve body.

[0013] According to the pressure balance valve for high-temperature cold storage provided by the present utility model, the connecting member includes a connecting pipe, and one end of the connecting pipe extends into the high-temperature cold storage.

[0014] According to the pressure balance valve for high-temperature cold storage provided by the present utility model, the connecting pipe is of a straight pipe structure.

[0015] According to the pressure balance valve for high-temperature cold storage provided by the present utility model, it further includes a maintenance opening, the maintenance opening is arranged on the side wall of the valve body, a maintenance door is provided at the maintenance opening, and the maintenance door is movably connected to the valve body.

[0016] For the pressure balance valve for high-temperature cold storage provided by the present utility model, through the arrangement of the connecting member, the pressure inside the high-temperature cold storage can be communicated with the outside through the valve body to achieve exchange. Specifically, in the specific connection, a first valve plate and a second valve plate are correspondingly arranged on the first valve port and the second valve port. When there is a certain pressure difference between the inside and the outside of the high-temperature cold storage, the internal and external pressure differences can be automatically balanced through the opening and closing of the first valve plate or the second valve plate. The overall structure is simple and the manufacturing cost is low, and it can effectively balance the internal and external pressure differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a longitudinal sectional structural schematic diagram of the pressure balance valve provided by the present utility model.

[0019] Figure 2It is a schematic cross-sectional view of the pressure balance valve provided by the present utility model.

[0020] Reference numerals:

[0021] 1. Valve body; 11. Balance channel; 12. First valve port; 13. Second valve port; 2. First valve plate; 3. Second valve plate; 4. Connecting member; 5. Inspection door; 6. Connecting flange; 7. Outer wall. Specific embodiments

[0022] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0025] In the embodiments of the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0026] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0027] In order to achieve the long-term preservation of food or other items, it is usually stored by building a high-temperature cold storage (hereinafter simply referred to as cold storage for convenience). With the development of technology, the cold storage has gradually changed from the traditional civil engineering method to an assembled panel cold storage. When assembling the panel cold storage, it is necessary to keep the internal environment relatively sealed to achieve efficient refrigeration. There is a pressure difference between the internal space and the external environment space of the cold storage, which makes it difficult to open and close the cold storage door. Especially when the pressure difference is too large, the door may become very difficult to open, which may pose a risk to the safety of operators and may cause safety accidents. It may also lead to instability of air humidity, thus affecting the quality of refrigerated food. For example, too high humidity may cause frosting or freezing on the surface of refrigerated products.

[0028] Regarding the problems in the related art, such as Figure 1 、 Figure 2As shown in the figure, the utility model provides a pressure balance valve for a high-temperature cold storage, which comprises a valve body 1, a first valve plate 2 and a second valve plate 3. There is a vertically arranged balance channel 11 inside the valve body 1. A first valve port 12 is opened at the top of the valve body 1, and a second valve port 13 is opened at the bottom of the valve body 1. A connecting member 4 is arranged on the valve body 1 between the first valve port 12 and the second valve port 13. The first valve port 12, the second valve port 13 and the connecting member 4 are all communicated with the balance channel 11. The first valve plate 2 is placed on the first valve port 12 and is used to cooperate with the first valve port 12 to control the opening or closing of the first valve port 12. The second valve plate 3 is placed on the second valve port 13 and is located inside the balance channel 11. The second valve plate 3 is used to cooperate with the second valve port 13 to control the opening or closing of the second valve port 13. One end of the connecting member 4 is connected to the valve body 1, and the other end of the connecting member 4 is located inside the high-temperature cold storage to balance the internal and external pressures. When balancing the pressures inside and outside the cold storage, it is necessary to connect the inside and the outside to achieve balance, while in the normal state, it is necessary to isolate the internal environment of the cold storage from the external environment to ensure the cooling efficiency inside the cold storage. In this embodiment, by correspondingly arranging valve plates at the first valve port 12 and the second valve port 13, the balance of internal and external pressures in different scenarios is achieved, and the overall structure is simple, easy to manufacture, and the overall cost is lower.

[0029] When balancing the air pressure, there are two scenarios. The first scenario is during the cooling process of the cold storage. When the external pressure is higher than the internal pressure of the cold storage, at this time, the high-pressure gas in the external high-pressure environment exerts a downward force on the first valve plate 2, so that the first valve plate 2 is pressed and fitted at the position of the first valve port 12 under its own gravity and the external air pressure, so that the first valve port 12 is in a closed state, and the first valve port 12 will not convect and exchange with the external high-pressure gas. At the same time, the high-pressure gas can exert an upward lifting force on the second valve plate 3. When the lifting force is greater than the weight of the second valve plate 3 itself, it can make the second valve plate 3 suspend and separate from the second valve port 13, and the second valve port 13 opens, so that the external high-pressure gas convects and exchanges with the gas in the balance channel 11. The balance channel 11 is communicated with the inside of the cold storage to achieve the balance of the internal pressure of the cold storage. When the pressure is balanced, the external higher pressure no longer exerts an upward lifting force on the second valve plate 3. At this time, the second valve plate 3 can close the second valve port 13 under its own gravity.

[0030] In Scenario 2, when the internal pressure is higher than the external pressure during the cold storage warming process, the internal environment of the cold storage is a high-pressure environment, and the external environment is a low-pressure environment. At this time, the second valve plate 3 is tightly attached to the second valve port 13 under the action of the internal pressure and its own gravity, so that the second valve port 13 is in a closed state, and there is no gas convection and exchange between the second valve port 13 and the external environment. At the same time, the high-pressure gas inside applies an upward lifting force to the first valve plate 2 through the balance channel 11. When the lifting force is greater than the weight of the first valve plate 2 itself, the first valve plate 2 can be suspended and separated from the first valve port 12, and the first valve port 12 is opened, so that a large amount of convection and exchange occur between the internal high-pressure gas and the external gas, realizing pressure balance. When the pressure balance is achieved, the pressure difference inside and outside disappears. At this time, the first valve plate 2 fits and closes with the first valve port 12 again under the action of its own gravity. It can be seen that in this embodiment, when balancing the internal and external pressures in different scenarios, one of the first valve port 12 and the second valve port 13 will open, which can automatically achieve the balance of the internal and external pressure differences and the closing of the balance channel 11. The overall structure is simple and easy to prepare.

[0031] In a specific example, the balance channel 11 is vertically arranged as a whole. The balance channel 11 can be a curved channel or a straight cylindrical straight channel. In order to facilitate the overall preparation and reduce the preparation difficulty, a straight channel can be adopted in this embodiment.

[0032] Among them, in this embodiment, both the first valve plate 2 and the second valve plate 3 are plate-like structures. The plate-like structure is conducive to preparation and can reduce the overall production cost. The two valve plates are placed on their respective corresponding valve ports, so that they can be lifted and suspended under high pressure, thereby realizing the opening of the valve ports. When the valve ports need to be closed, they are closed by the self-weight of the valve plates fitting with the edge of the valve ports.

[0033] When specifically set, the valve body 1 is constructed as a cylindrical structure, and the balance channel 11 is arranged on the axis of the valve body 1. The cylindrical valve body 1 is conducive to preparation, reduces the preparation difficulty, and is convenient for processing.

[0034] In a further example, an interface is opened on the valve body 1 for the connection of the connecting member 4. One end of the connecting member 4 is inserted into the interface to achieve communication with the balance channel 11, and the other end of the connecting member 4 extends into the cold storage, so that the space in the balance channel 11 is communicated with the internal space of the cold storage, facilitating the balance of the internal and external pressures.

[0035] It can be understood that through the setting of the connecting member 4, the entire valve body 1 can be arranged outside, and the balance channel 11 can be communicated with the internal channel of the cold storage through the connecting member 4, which is conducive to the rapid balance of the internal and external pressures. This method is conducive to the overall assembly of the valve body 1 and simplifies the assembly difficulty.

[0036] For example, the main structure of the valve body 1, the first valve plate 2, the second valve plate 3, and the connecting member 4 are all manufactured in the factory. During the on-site installation process, only a through hole needs to be opened on the outer wall of the cold storage so that the connecting member 4 can pass through the through hole and extend into the cold storage. Then, the connecting member and the entire valve body 1 are fixed on the outer wall of the cold storage to complete the overall installation. It can be seen that the entire installation process is relatively simple, reducing the installation difficulty and improving the installation efficiency.

[0037] According to an embodiment provided by the present utility model, the first valve port 12 is provided at the top of the balance channel 11, and the second valve port 13 is provided at the bottom of the balance channel 11. The two valve ports are located at both ends of the balance channel 11, which is beneficial for overall preparation and reduces the preparation difficulty.

[0038] It can be understood that the balance channel 11 adopts a straight channel structure, and the two valve ports are respectively located at the top and bottom of the balance channel 11, which is beneficial for overall processing and reduces the processing difficulty.

[0039] Specifically, the caliber of the first valve port 12 is the same as that of the second valve port 13. In this embodiment, the first valve plate 2 and the second valve plate 3 are arranged in a fitting manner, that is, there is no connection relationship between the two valve plates and the corresponding valve ports. By setting the sizes of the two valve plates to be the same structure, it is beneficial for processing, reduces the processing cost, and improves the stability of internal and external balance.

[0040] It can be understood that the two valve plates have the same specifications and sizes, and they can be exchanged and used with each other during processing, reducing the overall processing difficulty. Moreover, during the pressure balance process, the contact areas of the two valve plates with the air are the same, so that the two valve plates can be stably suspended when receiving approximately the same acting force, thereby realizing internal and external pressure balance.

[0041] According to an embodiment provided by the present utility model, a ring-shaped first support plate is provided at the top of the valve body 1, and the first valve plate is placed on the first support plate. The setting of the support plate can improve the stability of the valve plate placement.

[0042] Specifically, a ring-shaped raised structure is provided on the inner wall of the first valve port 12 channel to form the support plate. When the first valve plate 2 is installed, it is directly placed on the support plate, and the plane of the first valve plate 2 fits with the upper surface of the support plate plane, so as to be able to close the first valve port 12. Specifically, the upper surface of the support plate is processed by processing techniques such as precision grinding, so that the surface of the support plate is smooth. The plane of the corresponding first valve plate 2 is also processed by precision grinding, so that the first valve plate 2 fits more closely with the support plate under normal conditions.

[0043] During specific setting, a limiting cylinder opening is formed between the first supporting plate and the top surface of the valve body 1. The setting of the limiting cylinder opening can improve the installation stability of the first valve plate 2, realizing the stable installation and operation of the first valve plate 2.

[0044] It can be understood that when the air pressure inside the cold storage is higher than the external air pressure, it is necessary to achieve balance through the opening of the first valve port 12. During the opening process of the first valve port 12, the first valve plate 2 moves upward and floats. At this time, if there is no limit, the first valve plate 2 may be in a state of detaching from the valve body 1. In this embodiment, through the setting of the limiting cylinder opening, the first valve plate 2 is located within the limiting cylinder opening, thereby preventing the first valve plate 2 from detaching from the valve body 1. And the setting of the first cylinder opening enables a high-pressure gas column to be formed at the position of the limiting cylinder opening when there is external high-pressure gas, so as to apply a force to the first valve plate 2, making the first valve plate 2 closely adhere to the first valve port 12 to close the first valve port 12.

[0045] Similarly, a ring-shaped second supporting plate is provided at the bottom of the valve body 1, and the second valve plate is placed on the second supporting plate. The second supporting plate is entirely located within the balance channel 11, so the second supporting plate will not be in a state of detaching from the valve body 1. Through the setting of the second supporting plate, it is beneficial to the installation of the second supporting plate, making the installation of the second supporting plate more stable.

[0046] During specific setting, a lifting cylinder opening is provided between the second supporting plate and the bottom surface of the valve body 1. The lifting cylinder opening enables high-pressure gas to enter through the lifting cylinder opening to lift the second valve plate 3, which can effectively reduce the influence of external pressure fluctuations and make the overall lifting more stable.

[0047] According to an embodiment provided by the present utility model, the connecting member 4 includes a connecting pipe, and one end of the connecting pipe extends into the high-temperature cold storage. One end of the connecting pipe is connected to the valve body 1, and the other end is located inside the cold storage, thereby realizing the connection between the inside of the cold storage and the balance channel 11.

[0048] During specific setting, the connecting pipe can be inclined, that is, the end of the connecting pipe located inside the cold storage is higher than the end connected to the valve body 1. This setting method is beneficial to the discharge of condensed water in the pipeline. Of course, the connecting pipe can also be a bent pipe or other configurations, as long as it can realize the connection between the inside of the cold storage and the balance channel 11.

[0049] In some specific embodiments, the connecting pipe has a straight pipe structure. The structure of the straight pipe is beneficial to assembly.

[0050] Specifically, during assembly, by passing the connecting pipe through the cold storage and then fixing the connecting pipe, the entire assembly process is simple and the assembly difficulty is low.

[0051] According to an embodiment provided by the present utility model, it further includes an inspection opening which is arranged on the side wall of the valve body 1. An inspection door 5 is provided at the inspection opening, and the inspection door 5 is movably connected to the valve body 1. In order to facilitate the later maintenance of the whole valve body 1, in this embodiment, by opening an inspection opening on the side wall of the valve body 1, the inspection of the interior of the valve body 1 can be realized, reducing the difficulty and cost of later maintenance.

[0052] It can be understood that in the daily use and maintenance of the valve body 1 in this embodiment, the difficulty lies in the maintenance of the second valve plate 3. In this embodiment, through the setting of the inspection opening, the rapid maintenance of the second valve plate 3 can be realized, reducing the maintenance difficulty and cost.

[0053] Specifically, the diameter of the inspection opening is larger than the diameter of the second valve plate 3. The relatively large inspection opening is conducive to the installation and maintenance of the second valve plate 3, realizing the quick installation and maintenance of the second valve plate 3.

[0054] In specific applications, one side of the inspection door 5 is hinged to the outer wall of the valve body 1, and the other side of the inspection door 5 is clamped to the outer wall surface, so that the door panel surface of the inspection door 5 fits the outer wall surface of the valve body 1, enabling the inspection opening to be sealed when the inspection door 5 is closed, improving the sealing performance of the cold storage.

[0055] In a specific implementation manner, a sealing strip is provided on the edge of the inspection opening, so that the inspection door 5 can press the sealing strip after being closed, realizing the extrusion sealing of the sealing strip, thereby ensuring the sealing performance of the inspection door 5.

[0056] As Figure 1 shown, this embodiment also provides a pressure balance system for a high-temperature cold storage, including the above-mentioned pressure balance valve. The valve body 1 is arranged outside the high-temperature cold storage. The connecting member 4 in the pressure balance valve passes through the outer wall 7 of the high-temperature cold storage, so that one end of the connecting member 4 is communicated with the balance channel 11, and the other end is located inside the high-temperature cold storage; and two connecting flanges 6 are sleeved on the connecting member 4, one connecting flange 6 is arranged on the inner wall surface of the high-temperature cold storage, and the other connecting flange 6 is arranged on the outer wall surface of the high-temperature cold storage, thereby realizing the fixation of the connecting member 4.

[0057] It can be understood that through the above method, the pressure balance system is simply installed, facilitating quick assembly during batch installation, and the overall structure is simple, facilitating later maintenance and reducing the maintenance difficulty and cost.

[0058] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment is connected to the inside of the cold storage through the connecting member 4, so that the pressure inside the high-temperature cold storage can be connected to the outside through the valve body 1 to achieve exchange. Specifically, in the connection, the first valve plate 2 and the second valve plate 3 are correspondingly arranged on the first valve port 12 and the second valve port 13. When there is a certain pressure difference between the inside and the outside of the high-temperature cold storage, the opening and closing of the first valve plate 2 or the second valve plate 3 can automatically balance the internal and external pressure differences. The overall structure is simple and the manufacturing cost is low, and it can effectively balance the internal and external pressure differences. Further, by arranging the first valve plate 2 and the second valve plate 3 at the upper and lower ends of the balance channel 11, there is no need to manually open and close, and there is no possibility of manual operation errors and forgetting, which improves the overall safety. After adopting the pressure balance valve of the above example, the temperature rise and fall time of the high-temperature cold storage can be shortened by 1 / 5 to 1 / 3, and the economic benefit during the cooling period can be increased to 20% to 30%. At the same time, since the valve does not require manual operation, the labor intensity of the cold storage management personnel is reduced.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pressure balance valve for a high-temperature cold storage, characterized in that, Comprising: A valve body, a first valve plate and a second valve plate; A vertical balance channel is provided inside the valve body. A first valve port is opened at the top of the valve body, and a second valve port is opened at the bottom of the valve body. A connecting member is provided on the valve body between the first valve port and the second valve port. The first valve port, the second valve port and the connecting member are all communicated with the balance channel; The first valve plate is placed on the first valve port. The first valve plate is used to cooperate with the first valve port to control the opening or closing of the first valve port. The second valve plate is placed on the second valve port and is located inside the balance channel. The second valve plate is used to cooperate with the second valve port to control the opening or closing of the second valve port. One end of the connecting member is connected to the valve body, and the other end of the connecting member is located inside the high-temperature cold storage to balance the internal and external pressures.

2. The pressure balance valve for a high-temperature cold storage according to claim 1, wherein The first valve port is provided at the top of the balance channel, and the second valve port is provided at the bottom of the balance channel.

3. The pressure balance valve for a high-temperature cold storage according to claim 1, characterized in that, The caliber of the first valve port is the same as that of the second valve port.

4. The pressure balance valve for a high-temperature cold storage according to claim 1, characterized in that, A circular first support plate is provided at the top of the valve body, and the first valve plate is placed on the first support plate.

5. The pressure balance valve for a high-temperature cold storage according to claim 4, characterized in that, A limiting cylinder opening is formed between the first support plate and the top surface of the valve body.

6. The pressure balance valve for a high-temperature cold storage according to claim 1, wherein A circular second support plate is provided at the bottom of the valve body, and the second valve plate is placed on the second support plate.

7. The pressure balance valve for a high-temperature cold storage according to claim 1, characterized in that, The valve body is constructed as a cylindrical structure, and the balance channel is provided on the axis of the valve body.

8. The pressure balance valve for a high-temperature cold storage according to claim 1, characterized in that, The connecting member includes a connecting pipe, and one end of the connecting pipe extends into the high-temperature cold storage.

9. The pressure balance valve for a high-temperature cold storage according to claim 8, characterized in that, The connecting pipe is of a straight pipe structure.

10. The pressure balance valve for a high-temperature cold storage according to any one of claims 1-9, characterized in that, It further includes an inspection port. The inspection port is provided on the side wall of the valve body. An inspection door is provided at the inspection port, and the inspection door is movably connected to the valve body.

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