Constant pressure mechanism for nitrogen sealing

Abstract

The utility model relates to a constant pressure mechanism for nitrogen sealing, which comprises an intermediate tank and two metering tanks, a centrifugal fan is started to suck external air into a box body, a semiconductor chilling plate is started, the refrigeration surface of the semiconductor chilling plate is positioned in the box body, and a plurality of alternately arranged guide plates are fixedly mounted in the box body. Air entering the box body is retained in the box body for a longer time, the air circulation stroke in the box body is prolonged, and therefore the air is better refrigerated, the refrigerated air is input into the annular pipelines through the connecting air pipe, the two annular pipelines are communicated through the middle pipe, the annular pipelines are fixedly installed on the outer surface of the metering tank, and the annular pipelines are arranged in the heat preservation cover. The two metering tanks are cooled, the intermediate tank is communicated with the two metering tanks through the connecting pipe, the control valve is arranged on the connecting pipe to control opening or closing, and redundant nitrogen in the intermediate tank can be input into the two metering tanks to be stored.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen sealing equipment, specifically a constant pressure mechanism for nitrogen sealing. Background Technology

[0002] In the existing technology, there is no gas phase balance pipe between the intermediate tank and the metering tank. The intermediate tank is directly connected to the vent pipe, and the material in the metering tank is in direct contact with the air, which affects the quality of the finished product. At the same time, it does not have the function of cooling the metering tank to reduce the internal pressure, resulting in a large pressure inside the metering tank.

[0003] For example, the nitrogen-sealed storage tank disclosed in the authorized patent document with application number CN201721008904.4 has a nitrogen layer above the finished oil layer in the tank body, which is equipped with an oil inlet pipe and an oil outlet pipe; a nitrogen source connecting pipe is provided on one side of the sealing cap at the top of the tank body, and the nitrogen source connecting pipe is connected to the nitrogen tank through a nitrogen pressurization pump; a suspension pad is provided at the junction of the finished oil layer and the nitrogen layer in the tank body, and the suspension pad includes a float and a counterweight. The counterweight is set as a solid annular structure aligned with the inner wall of the tank body, and the float extends upward and inclined along the inner wall of the counterweight to the outer wall as an annular plate with a frustum structure in the inner cavity. An annular ring is provided on the inner side wall where the float and the counterweight connect. Nitrogen sealing technology can effectively dry and de-oxygenate the upper space of the finished oil layer in the tank, and automatically stabilize the nitrogen sealing pressure within a certain pressure range, making the storage of finished oil safer and more reliable; the suspension pad is in a floating state in the oil layer, avoiding residual oil on the inner wall of the tank and ensuring the cleanliness of the tank.

[0004] The aforementioned patent lacks the function of cooling the metering tank to reduce the internal pressure, resulting in a relatively high pressure inside the metering tank. Therefore, we need to provide a constant pressure mechanism for nitrogen sealing. Utility Model Content

[0005] The purpose of this invention is to provide a constant pressure mechanism for nitrogen sealing. A pressure-reducing mechanism is installed on the surfaces of two metering tanks. As the temperature rises, the pressure inside the metering tanks also increases accordingly. If the pressure exceeds the tank's tolerance limit, an explosion may occur. By reducing the internal pressure through cooling, this situation can be effectively avoided, improving safety during production. Furthermore, cooling reduces the activity of the medium inside the metering tanks, minimizing volume changes caused by temperature variations and maintaining the medium's stability. This helps improve metering accuracy and solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a constant pressure mechanism for nitrogen sealing, comprising:

[0007] Intermediate tank and two metering tanks;

[0008] The surfaces of the two metering tanks are provided with pressure-reducing mechanisms for reducing the pressure inside the two metering tanks;

[0009] A gas communication mechanism for nitrogen transfer within the intermediate tank is provided between the intermediate tank and the two metering tanks.

[0010] Preferably, the pressure reducing mechanism includes a surrounding pipe fixedly installed on the surface of two metering tanks, the bottom of each of the two surrounding pipes is connected to a connecting gas pipe, and the two surrounding pipes are connected to each other through a middle pipe. A refrigeration component is provided on one side of the middle tank, and the refrigeration component is connected to one of the connecting gas pipes.

[0011] Preferably, the refrigeration assembly includes a housing connected to one end of the connecting air pipe, a semiconductor refrigeration chip is embedded in one side of the housing, and a heat dissipation component is provided on the heating surface of the semiconductor refrigeration chip. Several guide plates are fixedly installed inside the housing, and the several guide plates are used to extend the air travel inside the housing. A centrifugal fan is connected to one side of the housing.

[0012] Preferably, the heat sink includes a heat-conducting plate fixedly installed on the heating surface of the semiconductor cooling chip, a heat dissipation fin fixedly installed on one side of the heat-conducting plate, and a mounting bracket fixedly installed on one side of the housing. The mounting bracket has two fans inside, and the air blowing ends of the two fans are both facing the heat dissipation fins.

[0013] Preferably, mounting plates are fixedly installed on both the front and back sides of the heat-conducting plate, and both mounting plates are fixed to the surface of the housing by bolts.

[0014] Preferably, the gas communication mechanism includes two connecting pipes connected to the top of the intermediate tank, one end of each connecting pipe being connected to the inside of two metering tanks, and a control valve is provided on the surface of each connecting pipe.

[0015] Preferably, the top of the intermediate tank is connected to a nitrogen pipe through which nitrogen flows, and a nitrogen sealing valve is provided on the surface of the nitrogen pipe.

[0016] Preferably, pressure gauges are installed on the top of the intermediate tank and the two metering tanks, and heat insulation covers are fixedly installed on the surface of the two metering tanks.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention incorporates a pressure-reducing mechanism on the surfaces of two metering tanks. As temperature rises, the internal pressure of the metering tanks increases accordingly. If the pressure exceeds the tank's tolerance limit, an explosion may occur. By reducing the internal pressure through cooling, this situation can be effectively avoided, improving safety during production. Furthermore, cooling reduces the activity of the medium inside the metering tanks, minimizing volume changes caused by temperature variations and maintaining the medium's stability. This contributes to improved metering accuracy. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 This is a partial three-dimensional structural view of the present invention;

[0021] Figure 3 This is a perspective view of the heat sink component of this utility model;

[0022] Figure 4 This is a perspective view of the box body of this utility model.

[0023] In the diagram: 1. Intermediate tank; 2. Metering tank; 3. Pressure reducing mechanism; 31. Circulating pipe; 32. Connecting gas pipe; 33. Central pipe; 30. Refrigeration component; 301. Housing; 302. Semiconductor refrigeration chip; 303. Baffle plate; 304. Centrifugal fan; 4. Gas connection mechanism; 41. Connecting pipe; 42. Control valve; 5. Heat sink; 51. Heat conduction plate; 52. Heat dissipation fins; 53. Mounting bracket; 54. Fan; 6. Mounting plate; 7. Bolt; 8. Nitrogen pipe; 9. Nitrogen sealing valve; 10. Pressure gauge; 11. Insulation cover. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a constant pressure mechanism for nitrogen sealing, comprising:

[0026] Intermediate tank 1 and two metering tanks 2;

[0027] The surfaces of the two metering tanks 2 are provided with pressure reducing mechanisms 3 for reducing the internal pressure of the two metering tanks 2;

[0028] A gas communication mechanism 4 for nitrogen supply in intermediate tank 1 is provided between intermediate tank 1 and two metering tanks 2.

[0029] Specifically, a pressure-reducing mechanism 3 is installed on the surface of the two metering tanks 2. As the temperature rises, the pressure inside the metering tank 2 also increases accordingly. If the pressure exceeds the withstand limit of the metering tank 2, an explosion may occur. By reducing the internal pressure through cooling, this situation can be effectively avoided, improving safety in the production process. Furthermore, cooling can reduce the activity of the medium inside the metering tank 2, reducing the volume change of the medium caused by temperature variations, thereby maintaining the stability of the medium. This helps improve the accuracy of metering.

[0030] The pressure reduction mechanism 3 includes a surrounding pipe 31 fixedly installed on the surface of two metering tanks 2. The bottom of each of the two surrounding pipes 31 is connected to a connecting gas pipe 32, and the two surrounding pipes 31 are connected to each other through a middle pipe 33. A cooling component 30 is provided on one side of the middle tank 1, and the cooling component 30 is connected to one of the connecting gas pipes 32.

[0031] In this embodiment, the centrifugal fan 304 is started to draw outside air into the housing 301, and the semiconductor cooling chip 302 is started. The cooling surface of the semiconductor cooling chip 302 is located in the housing 301, and several alternately arranged guide plates 303 are fixedly installed in the housing 301. This causes the air entering the housing 301 to stay in the housing 301 for a longer time, extending the air circulation path in the housing 301, thereby achieving better cooling of the air. The cooled air is input into the annular pipe through the connecting air pipe 32, and the two annular pipes are connected by the middle pipe 33. The annular pipe is fixedly installed on the outer surface of the metering tank 2 and is inside the heat insulation cover 11 to achieve cooling treatment of the two metering tanks 2. The intermediate tank 1 is connected to the two metering tanks 2 through the connecting pipe 41, and a control valve 42 is set on the connecting pipe 41 to control the opening or closing, so that excess nitrogen in the intermediate tank 1 can be input into the two metering tanks 2 for storage.

[0032] The refrigeration assembly 30 includes a housing 301 connected to one end of the connecting air pipe 32. A semiconductor cooling chip 302 is embedded in one side of the housing 301, and a heat sink 5 is provided on the heating surface of the semiconductor cooling chip 302. Several guide plates 303 are fixedly installed inside the housing 301. The several guide plates 303 are used to extend the air travel inside the housing 301, and a centrifugal fan 304 is connected to one side of the housing 301.

[0033] Specifically, the centrifugal fan 304 is started to draw outside air into the housing 301, and the semiconductor cooling chip 302 is activated. The cooling surface of the semiconductor cooling chip 302 is located in the housing 301, and several alternately arranged guide plates 303 are fixedly installed inside the housing 301. This causes the air entering the housing 301 to stay in the housing 301 for a longer time, extending the air circulation path inside the housing 301, thereby achieving better cooling of the air. The cooled air is then input into the annular pipe through the connecting air pipe 32.

[0034] The heat sink 5 includes a heat-conducting plate 51 fixedly installed on the heating surface of the semiconductor cooling chip 302. A heat sink fin 52 is fixedly installed on one side of the heat-conducting plate 51, and a mounting bracket 53 is fixedly installed on one side of the housing 301. Two fans 54 are provided inside the mounting bracket 53, and the air blowing ends of the two fans 54 are both facing the heat sink fin 52.

[0035] Furthermore, since the heat-conducting plate 51 is installed on the heating surface of the thermoelectric cooler 302, heat is transferred to the heat dissipation fins 52, thereby increasing the contact area with air and achieving better heat dissipation. In addition, two fans 54 are set to blow air onto the heat dissipation fins 52 to remove the heat from the surface of the heat dissipation fins 52, ensuring that the thermoelectric cooler 302 can work normally.

[0036] Mounting plates 6 are fixedly installed on both the front and back of the heat-conducting plate 51, and both mounting plates 6 are fixed to the surface of the housing 301 by bolts 7.

[0037] The heat-conducting plate 51 is fixedly mounted with mounting plates 6 on both the front and back sides, and the mounting plates 6 are fixedly mounted on the surface of the housing 301 by two bolts 7, which facilitates the installation and removal of the heat-conducting plate 51.

[0038] The gas communication mechanism 4 includes two connecting pipes 41 connected to the top of the intermediate tank 1. One end of each connecting pipe 41 is connected to the inside of the two metering tanks 2, and a control valve 42 is provided on the surface of each connecting pipe 41.

[0039] It should be noted that the intermediate tank 1 is connected to the two metering tanks 2 by a connecting pipe 41, and a control valve 42 is installed on the connecting pipe 41 to control its opening or closing, so that excess nitrogen in the intermediate tank 1 can be transferred into the two metering tanks 2 for storage.

[0040] The top of the intermediate tank 1 is connected to a nitrogen pipe 8 through which nitrogen flows, and a nitrogen sealing valve 9 is provided on the surface of the nitrogen pipe 8;

[0041] The main function of the nitrogen sealing valve 9 is to maintain a constant pressure of the protective gas at the top of the container to prevent the material inside the container from directly contacting the air. This prevents the material from evaporating, being oxidized, and ensures the safety of the container. Specifically, the nitrogen sealing valve 9 automatically regulates the supply and release of nitrogen to maintain the pressure inside the container within a set range, thereby protecting the material inside the container from the influence of the external environment.

[0042] Pressure gauges 10 are installed on the top of the intermediate tank 1 and the two metering tanks 2, and heat insulation covers 11 are fixedly installed on the surface of the two metering tanks 2.

[0043] It is worth noting that the insulation cover 11 is located on the surface of the two metering tanks 2, thereby reducing the loss of cold air.

[0044] The device starts the centrifugal fan 304 to draw outside air into the housing 301 and activates the semiconductor cooling chip 302. The cooling surface of the semiconductor cooling chip 302 is located in the housing 301, and several alternately arranged guide plates 303 are fixedly installed inside the housing 301. This causes the air entering the housing 301 to stay in the housing 301 for a longer time, extending the air circulation path inside the housing 301, thereby achieving better cooling of the air. The cooled air is input into the annular pipe through the connecting air pipe 32, and the two annular pipes are connected by the middle pipe 33. The annular pipe is fixedly installed on the outer surface of the metering tank 2 and is inside the heat insulation cover 11 to cool down the two metering tanks 2. The intermediate tank 1 is connected to the two metering tanks 2 through the connecting pipe 41, and a control valve 42 is installed on the connecting pipe 41 to control the opening or closing of the valve. Excess nitrogen in the intermediate tank 1 can be input into the two metering tanks 2 for storage.

[0045] 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 constant pressure mechanism for nitrogen sealing, characterized in that, include: Intermediate tank (1) and two metering tanks (2); The surfaces of the two metering tanks (2) are provided with pressure reducing mechanisms (3) for reducing the pressure inside the two metering tanks (2); A gas communication mechanism (4) for nitrogen transportation in the intermediate tank (1) is provided between the intermediate tank (1) and the two metering tanks (2).

2. The constant pressure mechanism for nitrogen sealing according to claim 1, characterized in that: The pressure reducing mechanism (3) includes a surrounding pipe (31) fixedly installed on the surface of two metering tanks (2). The bottom of each of the two surrounding pipes (31) is connected to a connecting gas pipe (32), and the two surrounding pipes (31) are connected by a middle pipe (33). A refrigeration component (30) is provided on one side of the intermediate tank (1), and the refrigeration component (30) is connected to one of the connecting gas pipes (32).

3. The constant pressure mechanism for nitrogen sealing according to claim 2, characterized in that: The refrigeration assembly (30) includes a housing (301) connected to one end of the connecting air pipe (32). A semiconductor refrigeration chip (302) is embedded in one side of the housing (301), and a heat sink (5) is provided on the heating surface of the semiconductor refrigeration chip (302). Several guide plates (303) are fixedly installed inside the housing (301). The several guide plates (303) are used to extend the air travel inside the housing (301), and a centrifugal fan (304) is connected to one side of the housing (301).

4. A constant pressure mechanism for nitrogen sealing according to claim 3, characterized in that: The heat sink (5) includes a heat-conducting plate (51) fixedly installed on the heating surface of the semiconductor cooling chip (302). A heat dissipation fin (52) is fixedly installed on one side of the heat-conducting plate (51), and a mounting bracket (53) is fixedly installed on one side of the housing (301). Two fans (54) are provided inside the mounting bracket (53), and the air blowing ends of the two fans (54) are facing the heat dissipation fin (52).

5. A constant pressure mechanism for nitrogen sealing according to claim 4, characterized in that: The heat-conducting plate (51) has mounting plates (6) fixedly installed on both the front and back sides. Both mounting plates (6) are fixed to the surface of the housing (301) by bolts (7).

6. A constant pressure mechanism for nitrogen sealing according to claim 1, characterized in that: The gas communication mechanism (4) includes two connecting pipes (41) connected to the top of the intermediate tank (1). One end of each of the two connecting pipes (41) is connected to the inside of the two metering tanks (2), and a control valve (42) is provided on the surface of each of the two connecting pipes (41).

7. A constant pressure mechanism for nitrogen sealing according to claim 1, characterized in that: The top of the intermediate tank (1) is connected to a nitrogen pipe (8) through which nitrogen flows, and a nitrogen sealing valve (9) is provided on the surface of the nitrogen pipe (8).

8. A constant pressure mechanism for nitrogen sealing according to claim 7, characterized in that: Pressure gauges (10) are installed on the top of the intermediate tank (1) and the two metering tanks (2), and heat insulation covers (11) are fixedly installed on the surface of the two metering tanks (2).

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