Combined device for nitrogen sealing system of storage tank
By designing a combined device for the nitrogen sealing system of the storage tank and adopting a filtration and sealing mechanism, the problems of nitrogen impurity contamination and leakage were solved, achieving a pure nitrogen supply and stable pressure in the storage tank, and ensuring the safety of the storage tank and the stable operation of the system.
Patent Information
- Application Number
- CN202423266813.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing nitrogen sealing systems for storage tanks cannot effectively remove impurities from nitrogen, leading to contamination of stored materials and easy leakage. The systems also suffer from wear and tear, low safety, and difficulty in adapting to complex operating conditions.
A combined device for a nitrogen sealing system for a storage tank was designed, comprising a filtration mechanism and a sealing mechanism. Nitrogen gas enters through an inlet pipe and is filtered by the filtration mechanism. A filter element and a sealing ring are used to prevent leakage, ensuring that the nitrogen gas enters the tank purely. The pressure is regulated by a nitrogen release valve to prevent nitrogen leakage.
It effectively removes impurities from nitrogen, prevents tank corrosion and leakage, maintains a stable slightly positive pressure environment, ensures safe and stable system operation, and reduces maintenance frequency.
Smart Images
Figure CN223782657U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to nitrogen seal system device technical field especially relates to a combination device for nitrogen seal system of storage tank. BACKGROUND
[0002] With the rapid development of industry, the safety and efficient operation of the storage tank in chemical industry, petrochemical industry and other industries are increasingly demanding. In the actual application scene of various storage tanks, material storage faces many problems. Many storage media, such as high-purity reagents in fine chemical industry and light oil in petroleum refining, have strong volatility, flammability and explosiveness. If they are in contact with air for a long time, the explosion risk will increase rapidly, which seriously threatens the safety of the production site. In addition, some raw materials in food and pharmaceutical industries have prominent oxidation and deterioration problems, which can cause huge economic losses. Enterprises are facing great pressure to reduce emissions. Conventional sealing methods, such as simple gasket sealing, cannot adapt to changes in storage tank pressure and are prone to leakage. Single gas supplement device cannot accurately control the nitrogen seal pressure and cannot meet the complex working conditions. In view of this, it is urgent to develop a combination device for nitrogen seal system of storage tank, which is expected to integrate multiple functions and solve existing problems in all directions to ensure reliable operation of the storage tank.
[0003] The existing device cannot effectively remove the impurities contained in the nitrogen gas, which will pollute the stored materials in the tank. Long-term use will cause internal wear and damage of the nitrogen seal system device, reduce the function precision of the device, and the safety of the system is low, which is easy to cause nitrogen leakage and dust entering the tank. UTILITY MODEL CONTENTS
[0004] The utility model aims at solving the shortcomings in the prior art and provides a combination device for nitrogen seal system of storage tank.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A combination device for nitrogen seal system of storage tank, comprising a storage tank body, a breathing valve is fixedly connected to the top of the storage tank body, sealing mechanisms are fixedly connected to the top of the storage tank body on both sides respectively, connecting pipes are fixedly connected to the inside of the two sealing mechanisms respectively, a nitrogen supply valve is fixedly connected to one side of the connecting pipe, and a pressure gauge pipe is fixedly connected to one side of the nitrogen supply valve.
[0007] As a further scheme of the utility model: a filter mechanism is fixedly connected to one side of the pressure gauge pipe, an inlet pipe is fixedly connected to one side of the filter mechanism, a nitrogen release valve is fixedly connected to one side of the other connecting pipe, and an outlet pipe is fixedly connected to one side of the nitrogen release valve.
[0008] As a further scheme of the utility model: the filter mechanism includes a filter cup, a clamping ring, a flange, a filter shell, a sealing gasket, a fixing frame, a filter core, a partition, a filter core sealing ring, a filter core sealing gasket, a ball valve and an automatic water drainer, and two flanges are fixedly connected to the opposite inner sides of an inlet pipeline and a pressure gauge pipeline respectively.
[0009] As a further scheme of the utility model: the filter shell is fixedly connected to the opposite inner sides of the two flanges, the filter shell is hollow inside, two sealing gaskets are fixedly connected to the two sides inside the filter shell, the partition is fixedly connected to the inside of the filter shell, two filter core sealing gaskets are fixedly connected to the two sides of the partition, two filter core sealing rings are fixedly connected to the top of the two filter core sealing gaskets, and two fixing frames are fixedly connected to the two sides of the partition.
[0010] As a further scheme of the utility model: two filter cores are fixedly connected to the inside of the fixing frame, the ball valve is fixedly connected to the hollow bottom of the flange, the automatic water drainer is fixedly connected to the bottom of the ball valve, the clamping ring is fixedly connected to the bottom of the flange, and the filter cup is fixedly connected to the four sides of the clamping ring.
[0011] As a further scheme of the utility model: the sealing mechanism includes a hollow base locking top plate, a pressure spring, a connecting ring, a sealing ring and a connecting cylinder, the connecting cylinder is fixedly connected to the top of the storage tank body, the bottom of the connecting pipeline is fixedly connected to the four sides of the connecting cylinder, and the connecting ring is fixedly connected to the four sides of the connecting pipeline.
[0012] As a further scheme of the utility model: the sealing ring is movably connected to the four sides of the connecting pipeline, the sealing ring is movably connected to the inside of the connecting ring, the hollow base is fixedly connected to the four sides of the connecting ring, the locking top plate is fixedly connected to the top of the connecting ring and the hollow base, the pressure spring is fixedly connected to the top of the storage tank body, and the pressure spring is movably connected to the four sides of the connecting pipeline.
[0013] Compared with the prior art, the utility model provides a combined device for nitrogen sealing system of storage tank, which has the following beneficial effects:
[0014] 1. This combined device for a nitrogen sealing system for storage tanks involves introducing nitrogen gas into a filtration mechanism via an inlet pipe. The filtration mechanism filters the nitrogen, releasing high-purity nitrogen through a pressure gauge pipe into a nitrogen supply valve. The nitrogen then enters the storage tank via a connecting pipe. When the pressure inside the storage tank rises above the pressure set value of the nitrogen release valve, the nitrogen release valve opens, releasing nitrogen to the outside through the connecting and outlet pipes. This reduces the pressure inside the tank, and the sealing mechanism prevents nitrogen leakage while maintaining stable nitrogen sealing pressure. Therefore, this device effectively removes impurities such as solid particles, trace amounts of moisture, and oil mist from the supplied nitrogen, preventing corrosion of the storage tank and related equipment. Simultaneously, the sealing mechanism prevents nitrogen leakage at the interfaces, ensuring the liquid is sealed inside the tank, thus guaranteeing the safety of the entire production area and the stable operation of the entire system.
[0015] 2. This combined device for a nitrogen sealing system for a storage tank allows nitrogen gas to enter the interior of a baffle plate through an inlet pipe. Guided by the baffle plate, the nitrogen gas passes through the filter element sealing gasket to the bottom of the filter housing, where it is filtered by the filter element. The filtered nitrogen gas is then transported from the other side of the filter element sealing gasket to a pressure gauge pipe, and finally enters the storage tank through a nitrogen supply valve. Two sealing gaskets and two flanges prevent leakage during transmission at both ends of the filtration mechanism. The filter element sealing ring and filter element sealing gasket prevent gaps from appearing during filtration. In conjunction with the baffle plate guiding the nitrogen gas filtration, a small amount of moisture and impurities remain after filtration. These are discharged through a ball valve and an automatic drainer into the filter cup, maintaining a good filtration environment inside the filter housing. This effectively removes some impurities contained in the nitrogen supplied by the gas source. The pure nitrogen gas can better maintain the micro-positive pressure environment inside the storage tank, while also preventing blockage and damage to the nitrogen supply valve, breather valve, and nitrogen release valve.
[0016] 3. This combined device for a nitrogen sealing system for storage tanks achieves a seal between the connecting pipe and the storage tank by inserting the bottom of the connecting pipe between the connecting cylinder and the pressure spring at the top of the storage tank, pressing the pressure spring down the connecting ring, locking the top plate to press the connecting ring and the sealing ring, and bolting it to the hollow base at the top of the storage tank. This effectively prevents nitrogen leakage, ensures a stable micro-positive pressure environment inside the tank, guarantees the stable operation of the entire system, and reduces the frequency of maintenance and repair.
[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description
[0018] Figure 1 This is a front view of a combined device for a nitrogen sealing system for a storage tank proposed in this utility model;
[0019] Figure 2This utility model provides a structural diagram of the filter mechanism of a combined device for a nitrogen sealing system in a storage tank.
[0020] Figure 3 This is a cross-sectional view of the filter mechanism of a combined device for a nitrogen sealing system for a storage tank proposed in this utility model;
[0021] Figure 4 This is a cross-sectional view of the sealing mechanism of a combined device for a nitrogen sealing system for a storage tank, as proposed in this utility model.
[0022] Figure 5 This is a detailed drawing of the sealing mechanism of a combined device for a nitrogen sealing system for a storage tank, as proposed in this utility model.
[0023] In the diagram: 1. Storage tank; 2. Inlet pipe; 3. Filtration mechanism; 4. Pressure gauge pipe; 5. Nitrogen supply valve; 6. Breathing valve; 7. Sealing mechanism; 8. Connecting pipe; 9. Nitrogen release valve; 10. Outlet pipe; 701. Hollow base; 702. Locking top plate; 703. Pressure spring; 704. Connecting ring; 705. Sealing ring; 706. Connecting cylinder; 301. Filter cup; 302. Snap-fit ring; 303. Flange; 304. Filter housing; 305. Sealing gasket; 306. Fixing frame; 307. Filter element; 308. Partition plate; 309. Filter element sealing ring; 310. Filter element sealing gasket; 311. Ball valve; 312. Automatic drainer. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] A combined device for a nitrogen sealing system for storage tanks, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the system includes a storage tank 1. A breather valve 6 is fixedly connected to the top of the storage tank 1. Sealing mechanisms 7 are fixedly connected to both sides of the top of the storage tank 1. Connecting pipes 8 are fixedly connected inside the two sealing mechanisms 7. A nitrogen supply valve 5 is fixedly connected to one side of the connecting pipe 8. A pressure gauge pipe 4 is fixedly connected to one side of the nitrogen supply valve 5. A filter mechanism 3 is fixedly connected to one side of the pressure gauge pipe 4. An inlet pipe 2 is fixedly connected to one side of the filter mechanism 3. A nitrogen release valve 9 is fixedly connected to one side of the other connecting pipe 8. An outlet pipe 10 is fixedly connected to one side of the nitrogen release valve 9. The model of the breather valve 6 is HXF-88, the model of the nitrogen supply valve 5 is ZZVP-16, and the model of the nitrogen release valve 9 is ZZDQ-16C.
[0028] During operation, nitrogen gas is introduced into the filter mechanism 3 through the inlet pipe 2. The filter mechanism 3 filters the nitrogen, and the high-purity nitrogen is discharged into the nitrogen supply valve 5 through the pressure gauge pipe 4. Then, it enters the storage tank 1 through the connecting pipe 8. When the pressure in the storage tank 1 rises above the pressure setting value of the nitrogen release valve 9, the nitrogen release valve 9 opens, releasing nitrogen to the outside through the connecting pipe 8 and the outlet pipe 10, causing the pressure inside the tank to drop. The sealing mechanism 7 prevents nitrogen leakage and maintains a stable nitrogen sealing pressure. Thus, this device can effectively remove some impurities contained in the nitrogen gas supply, such as solid particles, trace amounts of moisture, and oil mist, preventing corrosion of the storage tank and related equipment. At the same time, the sealing mechanism 7 prevents nitrogen leakage at the interface, ensuring that the liquid is sealed inside the tank, thereby guaranteeing the safety of the entire production area and the stable operation of the entire system.
[0029] To ensure the filtration of nitrogen gas within the input storage tank 1, such as Figure 2 and Figure 3 As shown, the filtration mechanism 3 includes a filter cup 301, a snap ring 302, a flange 303, a filter housing 304, a sealing gasket 305, a fixing frame 306, a filter element 307, a partition 308, a filter element sealing ring 309, a filter element sealing gasket 310, a ball valve 311, and an automatic drainer 312. The two flanges 303 are respectively fixedly connected to the inner sides of the inlet pipe 2 and the pressure gauge pipe 4.
[0030] The filter housing 304 is fixedly connected to the opposite inner sides of the two flanges 303, and the filter housing 304 is hollow. Two sealing gaskets 305 are fixedly connected to the inner sides of the filter housing 304 respectively. The partition plate 308 is fixedly connected to the inside of the filter housing 304. Two filter element sealing gaskets 310 are fixedly connected to the sides of the partition plate 308 respectively. Two filter element sealing rings 309 are fixedly connected to the top of the two filter element sealing gaskets 310 respectively. Two fixing brackets 306 are fixedly connected to the sides of the partition plate 308 respectively.
[0031] Two sets of filter elements 307 are fixedly connected to the inside of the mounting bracket 306. The ball valve 311 is fixedly connected to the hollow part at the bottom of the flange 303. The automatic drainer 312 is fixedly connected to the bottom of the ball valve 311. The snap ring 302 is fixedly connected to the bottom of the flange 303 around the perimeter. The filter cup 301 is fixedly connected to the perimeter of the snap ring 302. The automatic drainer 312 is model OPT-A.
[0032] During operation, nitrogen enters the interior of the baffle 308 through the inlet pipe 2. Guided by the baffle 308, the nitrogen passes through the filter element sealing gasket 310 to the bottom of the filter housing 304, where it is filtered by the filter element 307. The filtered nitrogen is then transported from the other side of the filter element sealing gasket 310 to the pressure gauge pipe 4, and finally enters the storage tank 1 through the nitrogen supply valve 5. Two sealing gaskets 305 and two flanges 303 prevent leakage during transmission at both ends of the filtration mechanism 3. The filter element sealing ring 309 and the filter element sealing gasket 310 prevent gaps from appearing during filtration.
[0033] In conjunction with the partition 308 guiding nitrogen filtration, a small amount of moisture and impurities will remain after nitrogen filtration. These will be discharged through the ball valve 311 and the automatic drain 312 into the water filter cup 301, maintaining a good filtration environment inside the filter housing 304. This effectively removes some impurities contained in the nitrogen supplied by the gas source. The pure nitrogen can better maintain the micro-positive pressure environment inside the storage tank, while also preventing the nitrogen supply valve 5, the breather valve 6, and the nitrogen release valve 9 from clogging and damage.
[0034] To ensure a tight seal when supplying nitrogen to the connecting pipe 8 and the storage tank 1, such as Figure 4 and Figure 5 As shown, the sealing mechanism 7 includes a hollow base 701, a locking top plate 702, a pressure spring 703, a connecting ring 704, a sealing ring 705, and a connecting cylinder 706. The connecting cylinder 706 is fixedly connected to the top of the storage tank 1, and the bottom of the connecting pipe 8 is fixedly connected to the circumference of the connecting cylinder 706. The connecting ring 704 is fixedly connected to the circumference of the connecting pipe 8.
[0035] The sealing ring 705 is movably connected to the periphery of the connecting pipe 8 and is also movably connected to the inside of the connecting ring 704. The hollow base 701 is fixedly connected to the periphery of the connecting ring 704. The locking top plate 702 is fixedly connected to the top of the connecting ring 704 and the hollow base 701. The pressure spring 703 is fixedly connected to the top of the storage tank 1 and is movably connected to the periphery of the connecting pipe 8.
[0036] During operation, by inserting the bottom of the connecting pipe 8 between the top connecting cylinder 706 and the pressure spring 703 of the storage tank 1, the connecting ring 704 presses down on the pressure spring 703, the locking top plate 702 presses the connecting ring 704 and the sealing ring 705, and locks them with bolts to the hollow base 701 on the top of the storage tank 1, thereby achieving a seal between the connecting pipe 8 and the storage tank 1. This effectively prevents nitrogen leakage, ensures that a stable micro-positive pressure environment is maintained inside the tank, and thus guarantees the stable operation of the entire system, reducing the number of repairs and maintenance.
[0037] Working principle: Nitrogen enters the interior of baffle 308 through inlet pipe 2. Guided by baffle 308, the nitrogen passes through filter element sealing gasket 310 to the bottom of filter housing 304, where filter element 307 filters it. The filtered nitrogen is then transported from the other side of filter element sealing gasket 310 to pressure gauge pipe 4, and finally enters the storage tank 1 through nitrogen supply valve 5. Two sealing gaskets 305 and two flanges 303 prevent leakage during transmission at both ends of the filtration mechanism 3. Filter element sealing ring 309 and filter element sealing gasket 310 prevent gaps from appearing during filtration. Together with baffle 308 to guide nitrogen filtration, a small amount of moisture and impurities will remain after nitrogen filtration. These are discharged through ball valve 311 and automatic drain 312 into water filter cup 301, maintaining a good filtration environment inside filter housing 304.
[0038] The filter mechanism 3 then discharges high-purity nitrogen gas through the pressure gauge pipe 4 into the nitrogen supply valve 5, and then into the storage tank 1 through the connecting pipe 8. When the pressure inside the storage tank 1 rises above the pressure setting value of the nitrogen release valve 9, the nitrogen release valve 9 opens, releasing nitrogen gas to the outside through the connecting pipe 8 and the outlet pipe 10, causing the pressure inside the tank to drop. By inserting the bottom of the connecting pipe 8 between the connecting cylinder 706 and the pressure spring 703 at the top of the storage tank 1, the connecting ring 704 presses down on the pressure spring 703, the locking top plate 702 presses the connecting ring 704 and the sealing ring 705, and locks it with bolts to the hollow base 701 at the top of the storage tank 1, thereby achieving a seal between the connecting pipe 8 and the storage tank 1, while maintaining a stable nitrogen sealing pressure.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A combined device for a nitrogen sealing system for a storage tank, comprising a storage tank (1), characterized in that, A breather valve (6) is fixedly connected to the top of the storage tank (1). Sealing mechanisms (7) are fixedly connected to both sides of the top of the storage tank (1). Connecting pipes (8) are fixedly connected inside the two sealing mechanisms (7). A nitrogen supply valve (5) is fixedly connected to one side of the connecting pipe (8). A pressure gauge pipe (4) is fixedly connected to one side of the nitrogen supply valve (5).
2. The combined device for a nitrogen sealing system for a storage tank according to claim 1, characterized in that, A filter mechanism (3) is fixedly connected to one side of the pressure gauge pipe (4), an inlet pipe (2) is fixedly connected to one side of the filter mechanism (3), a nitrogen release valve (9) is fixedly connected to one side of another connecting pipe (8), and an outlet pipe (10) is fixedly connected to one side of the nitrogen release valve (9).
3. The combined device for a nitrogen sealing system for a storage tank according to claim 2, characterized in that, The filtration mechanism (3) includes a filter cup (301), a snap ring (302), a flange (303), a filter housing (304), a sealing gasket (305), a fixing frame (306), a filter element (307), a partition plate (308), a filter element sealing ring (309), a filter element sealing gasket (310), a ball valve (311), and an automatic drain (312), and the two flanges (303) are respectively fixedly connected to the inner sides of the inlet pipe (2) and the pressure gauge pipe (4).
4. The combined device for a nitrogen sealing system for a storage tank according to claim 3, characterized in that, The filter housing (304) is fixedly connected to the opposite inner sides of the two flanges (303), and the filter housing (304) is hollow. Two sealing gaskets (305) are fixedly connected to the inner sides of the filter housing (304), the partition (308) is fixedly connected to the inside of the filter housing (304), two filter element sealing gaskets (310) are fixedly connected to the sides of the partition (308), two filter element sealing rings (309) are fixedly connected to the top of the two filter element sealing gaskets (310), and two fixing brackets (306) are fixedly connected to the sides of the partition (308).
5. The combined device for a nitrogen sealing system for a storage tank according to claim 3, characterized in that, The two sets of filter elements (307) are fixedly connected to the inside of the fixing frame (306), the ball valve (311) is fixedly connected to the hollow part at the bottom of the flange (303), the automatic drainer (312) is fixedly connected to the bottom of the ball valve (311), the snap ring (302) is fixedly connected to the bottom of the flange (303) around the perimeter, and the water filter cup (301) is fixedly connected to the perimeter of the snap ring (302).
6. The combined device for a nitrogen sealing system for a storage tank according to claim 1, characterized in that, The sealing mechanism (7) includes a hollow base (701) locking the top plate (702), a pressure spring (703), a connecting ring (704), a sealing ring (705), and a connecting cylinder (706). The connecting cylinder (706) is fixedly connected to the top of the storage tank (1), and the bottom of the connecting pipe (8) is fixedly connected to the periphery of the connecting cylinder (706). The connecting ring (704) is fixedly connected to the periphery of the connecting pipe (8).
7. The combined device for a nitrogen sealing system for a storage tank according to claim 6, characterized in that, The sealing ring (705) is movably connected to the periphery of the connecting pipe (8) and is movably connected to the inside of the connecting ring (704). The hollow base (701) is fixedly connected to the periphery of the connecting ring (704). The locking top plate (702) is fixedly connected to the top of the connecting ring (704) and the hollow base (701). The pressure spring (703) is fixedly connected to the top of the storage tank (1) and is movably connected to the periphery of the connecting pipe (8).