Nitrogen storage tank with high protective property

Abstract

The nitrogen storage tank comprises a tank body, the top of the tank body is provided with a cover body, the side wall of the tank body is communicated with an exhaust valve, one side, far away from the exhaust valve, of the tank body is communicated with an air inlet pipe, a sealing mechanism is arranged between the tank body and the cover body, and the sealing mechanism comprises an air bag, an air inlet pipe and an air outlet pipe, the cover body is fixedly connected to the outer wall of the tank body, and the outer wall is attached to the inner wall of the cover body; the two shells are fixedly connected to the two sides of the outer wall of the tank body respectively; the air inlet is formed in the top of the outer wall of the shell. The utility model relates to the technical field of nitrogen storage tanks, through the cooperation of the shell, the air inlet hole, the first piston and the curved bar, the inflation pressure of the air bag can be accurately controlled, so that the sealing effect is effectively controlled, and the problems of complex maintenance, time consumption, incomplete sealing and the like caused by the adoption of a complex multi-stage sealing ring structure in a traditional high nitrogen storage tank are solved. The sealing structure is greatly simplified, the sealing reliability is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen storage tank technology, specifically a nitrogen storage tank with high protective properties. Background Technology

[0002] Nitrogen is a colorless, odorless, and tasteless gas under normal conditions, and is generally non-toxic. Nitrogen accounts for 78.12% (by volume) of the atmosphere and is the main component of air. It is a gas at room temperature, but under standard atmospheric pressure, it becomes a colorless liquid when cooled to -195.8℃, and when cooled to -209.86℃, liquid nitrogen becomes a snow-like solid. Nitrogen is chemically very stable and rarely reacts with other substances at room temperature, but it can undergo chemical changes with certain substances under high temperature and high energy conditions to produce new substances useful to humans.

[0003] Liquid nitrogen is usually stored in tanks. Although existing liquid nitrogen storage tanks have good sealing performance under normal conditions, many protective high-nitrogen storage tanks use complex sealing connection methods, such as multi-stage sealing rings. This makes maintenance work complicated and time-consuming, and also easily leads to incomplete sealing. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a highly protective nitrogen storage tank, which solves the problem of complex sealing connection methods used in many highly protective nitrogen storage tanks, such as multi-stage sealing rings, which makes maintenance work complicated and time-consuming, and is also prone to incomplete sealing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a highly protective nitrogen storage tank, comprising a tank body, a cover on the top of the tank body, an exhaust valve connected to the upper side of one side of the tank body, an air inlet pipe connected to the top of the tank body, and a sealing mechanism between the tank body and the cover. The sealing mechanism includes: an air bladder fixedly connected to the outer wall of the tank body, with the outer wall fitting against the inner wall of the cover; two shells, respectively fixedly connected to both sides of the outer wall of the tank body; an air inlet located at the top of the outer wall of the shell and connected to the bottom of the air bladder; a first piston movably connected to the inside of the shell; a crank rod, one end fixed to the bottom of the first piston and the other end extending to the bottom of the shell; and a fixing assembly installed between the cover and the crank rod. Through the cooperation of the shell, the air inlet, the first piston, and the crank rod, the air bladder can be inflated, compressing the tank body and the cover to ensure a seal between them, and the crank rod is fixed by the fixing assembly.

[0006] Preferably, the fixing component includes: a rotating rod rotatably connected to the end of the curved rod via a pin; a fixing rod disposed above the rotating rod; a locking block rotatably connected to the top of the fixing rod; and a locking plate fixed to the outer wall of the cover and engaging with the bottom of the locking block; wherein the curved rod is fixed by the cooperation of the rotating rod, the fixing rod, the locking block, and the locking plate.

[0007] Preferably, the top of the rotating rod is threadedly connected to an adjusting rod, and the other end of the adjusting rod is threadedly connected to the inner wall of the fixed rod.

[0008] Preferably, the side of the shell away from the tank is connected to a tube, the inner wall of the tube is movably connected to a second piston, the bottom of the second piston is fixedly connected to a rod, the outer wall of the rod penetrates the bottom of the tube, the outer wall of the rod is sleeved with an elastic element, the two ends of the elastic element are respectively abutted against the second piston and the tube, and the surface of the rod is provided with a scale.

[0009] Preferably, a pressure sensor is fixedly connected to the side wall of the tank, the pressure sensor is electrically connected to a controller, the controller is fixedly connected to one side of the top of the tank, the controller is electrically connected to an alarm, the alarm is fixedly connected to the other side of the tank, and the exhaust valve is electrically connected to the controller.

[0010] Beneficial effects

[0011] This invention provides a highly protective nitrogen storage tank. It offers the following advantages: Through the cooperation of the shell, air inlet, first piston, and crankshaft, the highly protective nitrogen storage tank can precisely control the inflation pressure of the gas bladder, thereby effectively controlling the sealing effect. This avoids the problems of complex maintenance, time-consuming operation, and incomplete sealing caused by the complex multi-stage sealing ring structure of traditional high-nitrogen storage tanks, greatly simplifying the sealing structure, improving sealing reliability, and reducing maintenance costs.

[0012] When the airbag leaks, the mutual clamping force between the airbag and the second piston is equal when the airbag is in good condition. However, when the airbag leaks, the second piston will experience downward pressure, causing the rod and scale to shift downward. By manually observing the scale value at the bottom of the tube when the airbag is in good condition, and because the downward pressure of the second piston during the leak will cause the rod and scale to shift downward, the scale value at the bottom of the tube will differ from the scale value when the airbag is in good condition. Therefore, the airbag's condition can be monitored in real time using this device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the appearance of the present utility model;

[0015] Figure 3 for Figure 1 A schematic diagram of the structure of the middle casing, the intake pipe, and the first piston;

[0016] Figure 4 for Figure 1 A schematic diagram of the structure of the second piston, rod, and elastic element;

[0017] Figure 5 for Figure 1 A schematic diagram of the structure of the rotating rod, the fixed rod, and the locking block.

[0018] In the diagram: 1. Tank body; 2. Cover body; 3. Sealing mechanism; 31. Airbag; 32. Shell; 33. Air inlet; 34. First piston; 35. Crank rod; 36. Fixing assembly; 361. Rotating rod; 362. Fixing rod; 363. Locking block; 364. Locking plate; 4. Adjusting rod; 5. Pipe body; 6. Second piston; 7. Rod body; 8. Elastic element; 9. Scale; 10. Air pressure sensor; 11. Controller; 12. Exhaust valve; 13. Alarm; 14. Air inlet pipe. Detailed Implementation

[0019] 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.

[0020] Many protective high-nitrogen storage tanks employ complex sealing connection methods, such as multi-stage sealing rings, which makes maintenance complicated and time-consuming, and also prone to incomplete sealing.

[0021] In view of this, the present invention provides a nitrogen storage tank with high protective performance. Through the cooperation of the shell, air inlet, first piston and crank, the inflation pressure of the air bladder can be precisely controlled, thereby effectively controlling the sealing effect. This avoids the problems of complicated maintenance, time-consuming maintenance and incomplete sealing caused by the complex multi-stage sealing ring structure of traditional high nitrogen storage tanks. It greatly simplifies the sealing structure, improves sealing reliability and reduces maintenance costs.

[0022] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0023] Example 1: By Figure 1-5It is understood that a highly protective nitrogen storage tank includes a tank body 1 with a special structure for heat insulation. The top of the tank body 1 is equipped with a cover 2. An exhaust valve 12 is connected to the upper side of one side of the tank body 1. An air inlet pipe 14 is connected to the top of the tank body 1. A sealing mechanism 3 is provided between the tank body 1 and the cover 2. The sealing mechanism 3 includes: an airbag 31, fixedly connected to the outer wall of the tank body 1, with the outer wall fitting against the inner wall of the cover 2; two shells 32, respectively fixedly connected to both sides of the outer wall of the tank body 1; and an air inlet 33, opened at the top of the outer wall of the shell 32, and connected to the gas... The bottom of the airbag 31 is connected; the first piston 34 is movably connected to the inside of the housing 32; the crank rod 35 is fixed at one end to the bottom of the first piston 34 and extends to the bottom of the housing 32; the fixing assembly 36 is installed between the cover 2 and the crank rod 35; wherein, through the cooperation of the housing 32, the air inlet 33, the first piston 34 and the crank rod 35, the airbag 31 can be inflated and squeezed between the canister 1 and the cover 2 to ensure the seal between the canister 1 and the cover 2, and the crank rod 35 is fixed by the fixing assembly 36;

[0024] In the specific implementation process, it is worth noting that the airbag 31 is inflated by the cooperation of the shell 32, air inlet 33, first piston 34 and crank rod 35, which compresses the tank 1 and cover 2 to achieve a tight seal on the tank 1 and cover 2. The first piston 34 is installed inside the shell 32, and the crank rod 35 is fixedly connected to the bottom of the first piston 34 and movably connected to the inside of the shell 32. The air inlet 33 is located on the outer wall of the shell 32 and connected to the bottom of the airbag 31. When inflation is required, the crank rod 35 is fixed by the fixing component 36. The crank rod 35 drives the first piston 34 to compress upward inside the shell 32. Since there is gas inside the shell 32, the airbag 31 is compressed towards the tank 1 and cover 2, thereby achieving a tight seal. The fixing component 36 plays the role of fixing the crank rod 35, thereby effectively controlling the sealing effect. The inside of the tank 1 is insulated with expanded perlite. Expanded perlite is a new type of industrial material with a honeycomb structure and is mainly used as the insulation layer of storage tanks. It can prevent the brittle effects of low temperatures on the outer and inner walls of the storage tank, and plays a filtering and adsorption role to maintain the cold insulation performance of the storage tank.

[0025] Furthermore, the fixing component 36 includes: a rotating rod 361, rotatably connected to the end of the crank 35 via a pin; a fixing rod 362, disposed above the rotating rod 361; a locking block 363, rotatably connected to the top of the fixing rod 362; and a locking plate 364, fixed to the outer wall of the cover 2 and engaging with the bottom of the locking block 363; wherein, the crank 35 is fixed by the cooperation of the rotating rod 361, the fixing rod 362, the locking block 363, and the locking plate 364.

[0026] In the specific implementation process, it is worth noting that the rotating rod 361 is connected to the end of the crank rod 35 by a pin, the locking block 363 is fixedly connected to the top of the fixed rod 362, and the locking plate 364 is fixedly connected to the outer wall of the cover 2. The bottom of the locking block 363 is precisely aligned with the top of the locking plate 364. When it is necessary to adjust the position of the crank rod 35, it is only necessary to move the rotating rod 361 to move it up or down. The rotating rod 361 drives the locking block 363, so that the contact position between the locking block 363 and the locking plate 364 changes, thereby realizing the precise adjustment of the position of the crank rod 35.

[0027] Furthermore, the top of the rotating rod 361 is threadedly connected to an adjusting rod 4, and the other end of the adjusting rod 4 is threadedly connected to the inner wall of the fixed rod 362;

[0028] In the specific implementation process, it is worth noting that the clamping force of the locking block 363 and the locking plate 364 can be adjusted by adjusting rod 4. When the locking block 363 and the locking plate 364 need to be fixed, the rotating rod 361 and the fixing rod 362 are separated by rotating adjusting rod 4, thereby realizing the adjustment of the clamping force of the locking block 363 and the locking plate 364.

[0029] Specifically, when using this highly protective nitrogen storage tank, the air bladder 31 is inflated by the cooperation of the shell 32, air inlet 33, first piston 34, and crank rod 35, causing it to compress the tank body 1 and cover 2, thus achieving a tight seal. The shell 32 houses the first piston 34, and the crank rod 35 is fixedly connected to the bottom of the first piston 34 and movably connected to the interior of the shell 32. The air inlet 33 is located on the outer wall of the shell 32 and connected to the bottom of the air bladder 31. When inflation is required, the crank rod 35 is fixed by the fixing component 36. The crank rod 35 drives the first piston 34 to compress upwards inside the shell 32. Since there is gas inside the shell 32, it also drives the air bladder 31 to compress towards the tank body 1 and cover 2, thereby achieving a seal. The fixing component 36 serves to fix the crank rod 35, thus effectively controlling the sealing effect. As a result, the rotating rod 361 is connected to the end of the crank rod 35 via a pin, the locking block 363 is fixedly connected to the top of the fixed rod 362, and the locking plate 364 is fixedly connected to the outer wall of the cover 2. The bottom of the locking block 363 is precisely aligned with the top of the locking plate 364. When it is necessary to adjust the position of the crank rod 35, it is only necessary to move the rotating rod 361 to move it up or down. The rotating rod 361 drives the locking block 363, so that the contact position between the locking block 363 and the locking plate 364 changes, thereby achieving precise adjustment of the position of the crank rod 35. The clamping force of the locking block 363 and the locking plate 364 can be adjusted by the adjusting rod 4. When the locking block 363 and the locking plate 364 need to be fixed, the rotating rod 361 and the fixed rod 362 are separated by rotating the adjusting rod 4, thereby achieving adjustment of the clamping force of the locking block 363 and the locking plate 364.

[0030] Example 2: From Figure 1-4 It can be seen that the shell 32 is connected to the tube 5 on the side away from the tank 1. The inner wall of the tube 5 is movably connected to the second piston 6. The bottom of the second piston 6 is fixedly connected to the rod 7. The outer wall of the rod 7 penetrates the bottom of the tube 5. The outer wall of the rod 7 is sleeved with an elastic element 8. The two ends of the elastic element 8 are respectively pressed against the second piston 6 and the tube 5. The surface of the rod 7 is provided with a scale 9.

[0031] In the specific implementation process, it is worth noting that when the airbag 31 leaks, the mutual clamping force between the airbag 31 and the second piston 6 is equal when the airbag 31 is in good condition. However, when the airbag 31 leaks, the second piston 6 will have downward pressure, which will cause the rod 7 and the scale 9 to move downward. The scale values ​​at the bottom of the scale 9 and the tube 5 can be manually observed when the airbag 31 is in good condition. When the airbag 31 leaks, the downward pressure of the second piston 6 will cause the rod 7 and the scale 9 to move downward, resulting in the scale value at the bottom of the scale 9 being different from the scale value when the airbag 31 is in good condition. Therefore, the good condition of the airbag 31 can be monitored in real time through this device.

[0032] Furthermore, a pressure sensor 10 is fixedly connected to the side wall of the tank 1, and the pressure sensor 10 is electrically connected to a controller 11. The controller 11 is fixedly connected to one side of the top of the tank 1, and the controller 11 is electrically connected to an alarm 13. The alarm 13 is fixedly connected to the other side of the tank 1, and the exhaust valve 12 is electrically connected to the controller 11.

[0033] In the specific implementation process, it is worth noting that by monitoring the changes in air pressure inside the tank 1 through the air pressure sensor 10, the safety monitoring and early warning function of the air pressure inside the tank 1 can be realized. When the air pressure inside the tank 1 exceeds the preset value, the air pressure sensor 10 transmits the signal to the controller 11, and the controller 11 triggers the alarm 13 to issue an alarm, reminding the user to pay attention to potential safety hazards. At the same time, the controller 11 also transmits the signal to the exhaust valve 12 to open it, ensuring that the air pressure inside the tank 1 is stable within a safe range, and avoiding accidents such as tank 1 rupture due to excessive air pressure.

[0034] Specifically, based on the above embodiment one, when the airbag 31 leaks internally, since the mutual clamping force between the airbag 31 and the second piston 6 is equal when the airbag 31 is in good condition, when the airbag 31 leaks, the second piston 6 will experience downward pressure, causing the rod 7 and the scale 9 to shift downwards. This can be observed manually by comparing the scale values ​​at the bottom of the tube 5 when the airbag 31 is in good condition with those at the bottom of the tube 5. Furthermore, when the airbag 31 leaks, the downward pressure from the second piston 6, causing the rod 7 and the scale 9 to shift downwards, will result in a discrepancy between the scale value at the bottom of the scale 9 and the scale value when the airbag 31 is in good condition. Therefore, this can be observed through... The device monitors the condition of the airbag 31 in real time and monitors the air pressure changes inside the tank 1 through the air pressure sensor 10, realizing the safety monitoring and early warning function of the air pressure inside the tank 1. When the air pressure inside the tank 1 exceeds the preset value, the air pressure sensor 10 transmits the signal to the controller 11, and the controller 11 triggers the alarm 13 to issue an alarm, reminding the user to pay attention to potential safety hazards. At the same time, the controller 11 also transmits the signal to the exhaust valve 12 to open it, ensuring that the air pressure inside the tank 1 is stable within a safe range, and avoiding accidents such as tank 1 rupture due to excessive air pressure.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] 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 nitrogen gas storage tank with high protection, comprising a tank body (1), characterized in that: The top of the tank body (1) is provided with a cover body (2), one side of the tank body (1) is communicated with an exhaust valve (12), the top of the tank body (1) is communicated with an air inlet pipe (14), a sealing mechanism (3) is arranged between the tank body (1) and the cover body (2), and the sealing mechanism (3) comprises: An air bag (31) is fixedly connected to the outer wall of the tank body (1) and is attached to the inner wall of the cover body (2); Two housings (32) are arranged and are fixedly connected to the outer walls on both sides of the tank body (1); An air inlet hole (33) is formed in the top of the outer wall of the housing (32) and is in communication with the bottom of the air bag (31); A first piston (34) is movably connected to the inside of the housing (32); A crank rod (35) is fixedly connected to the bottom of the first piston (34) and extends to below the housing (32); A fixing assembly (36) is arranged between the cover body (2) and the crank rod (35); Wherein, through the cooperation of the housing (32), the air inlet hole (33), the first piston (34) and the crank rod (35), the air bag (31) can be inflated, the tank body (1) and the cover body (2) can be extruded, the sealing between the tank body (1) and the cover body (2) can be ensured, and the crank rod (35) can be fixed by the fixing assembly (36).

2. The nitrogen storage tank of claim 1, wherein: The fixing assembly (36) comprises: A rotating rod (361) is rotatably connected to the end of the crank rod (35) by a pin shaft; A fixed rod (362) is arranged above the rotating rod (361); A clamping block (363) is rotatably connected to the top of the fixed rod (362); A clamping plate (364) is fixedly connected to the outer wall of the cover body (2) and is fitted with the bottom of the clamping block (363); Wherein, through the cooperation of the rotating rod (361), the fixed rod (362), the clamping block (363) and the clamping plate (364), the crank rod (35) can be fixed.

3. A nitrogen storage tank with high protection according to claim 2, characterized in that: A adjusting rod (4) is threadedly connected to the top of the rotating rod (361), and the other end of the adjusting rod (4) is threadedly connected to the inner wall of the fixed rod (362).

4. The nitrogen storage tank of claim 1, wherein: A pipe body (5) is communicated with the side of the housing (32) away from the tank body (1), a second piston (6) is movably connected to the inner wall of the pipe body (5), a rod body (7) is fixedly connected to the bottom of the second piston (6), the outer wall of the rod body (7) penetrates through the bottom of the pipe body (5), an elastic member (8) is sleeved on the outer wall of the rod body (7), the two ends of the elastic member (8) are tightly abutted with the second piston (6) and the pipe body (5) respectively, and a scale (9) is arranged on the surface of the rod body (7).

5. The nitrogen storage tank of claim 1, wherein: An air pressure sensor (10) is fixedly connected to the side wall of the tank body (1), the air pressure sensor (10) is electrically connected with a controller (11), the controller (11) is fixedly connected to one side of the top of the tank body (1), the controller (11) is electrically connected with an alarm (13), the alarm (13) is fixedly connected to the other side of the tank body (1), and the exhaust valve (12) is electrically connected with the controller (11).

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