Nitrogen sealing structure of storage tank

Abstract

The nitrogen sealing structure of the storage tank comprises a storage tank body and a safety valve body, the storage tank body is provided with a feeding port, a first air inlet and a first air outlet, the safety valve body is arranged at the first air outlet, and an exhaust port of the safety valve body is detachably connected with an air bag. The device has the effect of reducing waste of nitrogen.

Description

Technical Field

[0001] This application relates to the technical field of storage tank equipment, and particularly relates to a nitrogen sealing structure for a storage tank. Background Art

[0002] During the use of some drugs in equipment, pressure sealing is required in the storage tank. As the drugs are used and the liquid level drops, the sampling pressure also needs to remain unchanged. At this time, additional gas needs to be introduced to ensure the sealing environment while ensuring pressure changes. Usually, nitrogen is introduced into the storage tank. However, during the process of introducing nitrogen, there may be an over-injection situation, resulting in too high internal pressure in the storage tank. Therefore, a safety valve is usually installed on the storage tank. When the pressure reaches a certain value, a certain amount of nitrogen is discharged through the safety valve. However, if these nitrogen gases are directly discharged into the external environment, it will cause waste of nitrogen. Utility Model Content

[0003] In order to reduce the waste of nitrogen, this application provides a nitrogen sealing structure for a storage tank.

[0004] The nitrogen sealing structure for a storage tank provided by this application adopts the following technical solutions:

[0005] It includes a storage tank body and a safety valve body. The storage tank body is provided with a feed inlet, a first air inlet, and a first air outlet. The safety valve body is arranged at the first air outlet, and an airbag is detachably connected to the exhaust port of the safety valve body.

[0006] By adopting the above technical solutions, an airbag is arranged on the safety valve body, and the nitrogen discharged by the safety valve can be recovered through the airbag, so as to recycle the discharged nitrogen and improve the utilization rate of resources.

[0007] Optionally, the air inlet of the airbag is connected to a first pipeline. The end of the first pipeline far from the airbag is a second air inlet. A second pipeline is arranged in the middle of the first pipeline. The end of the second pipeline far from the first pipeline is a second air outlet. A first control valve is arranged on the first pipeline on the side close to the airbag of the second pipeline.

[0008] Optionally, a first one-way valve is arranged at the end of the first pipeline far from the first control valve. The first one-way valve enables the gas to only flow from the first pipeline to the airbag, and a second control valve is arranged on the second pipeline.

[0009] By adopting the above technical solutions, a first one-way valve is arranged. During air intake, nitrogen can pass through the first one-way valve. When exhausting through the second pipeline, the second control valve is opened, and the gas cannot pass through the first one-way valve.

[0010] Optionally, a first mounting portion is provided at the end of the first pipeline, a second mounting portion is provided at the first exhaust port of the safety valve body, a positioning pipe is provided on the first mounting portion, and a positioning groove for the positioning pipe to be clamped is provided on the second mounting portion.

[0011] By adopting the above technical solution, when installing the airbag, the positioning pipe is clamped in the positioning groove on the second mounting portion, thereby initially installing the airbag.

[0012] Optionally, a connecting rod is provided on the second mounting portion. One end of the connecting rod is hinged to the second mounting portion, and a hook rod for hooking on the first mounting portion is provided at the other end of the connecting rod.

[0013] By adopting the above technical solution, after the airbag is initially installed, the hook rod hooks on the first mounting portion, thereby limiting the first mounting portion to realize the installation of the airbag.

[0014] Optionally, a driving rod is provided at the hinged end of the connecting rod. A driving ring is slidably connected to the second mounting portion along the axial direction, and the driving ring is used to drive the driving rod to swing.

[0015] By adopting the above technical solution, the driving ring can drive the driving rod to swing, thereby forcing the connecting rod to swing, and further driving the hook rod to move to hook and unlock the first mounting portion.

[0016] Optionally, a connecting member corresponding to the driving rod is provided on the outer peripheral wall of the driving ring. A round rod is provided on the connecting member, and a waist-shaped groove is formed on the driving rod. The round rod is slidably connected to the waist-shaped groove.

[0017] By adopting the above technical solution, the round rod slides on the waist-shaped groove. When the driving ring moves, the driving rod can be forced to swing up and down through the round rod, thereby driving the connecting rod to swing to control the hook rod.

[0018] Optionally, a spring for forcing the driving ring to slide closer to the second mounting portion is provided on the second mounting portion.

[0019] By adopting the above technical solution, a spring is provided. The spring forces the driving ring to slide, so that the hook rod hooks on the first mounting portion, thereby improving the stability of the limit.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. An airbag is provided on the safety valve body. The nitrogen discharged by the safety valve can be recovered through the airbag, so as to recycle the discharged nitrogen and improve the utilization rate of resources;

[0022] 2. The driving ring can drive the driving rod to swing, thereby forcing the connecting rod to swing, and then driving the hooking rod to move, so as to hook and unlock the first installation part. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of this embodiment;

[0024] Figure 2 is a schematic connection diagram of the first installation part and the second installation part in this embodiment.

[0025] In the figure, 1 is the storage tank body; 11 is the feed inlet; 12 is the first air inlet; 13 is the first air outlet; 2 is the airbag; 21 is the first pipeline; 22 is the second pipeline; 23 is the first control valve; 24 is the second control valve; 25 is the first one-way valve; 26 is the positioning pipe; 27 is the first installation part; 3 is the safety valve body 31, the second installation part; 32 is the positioning groove; 33 is the connecting rod; 34 is the hooking rod; 35 is the driving rod; 351 is the kidney-shaped groove; 36 is the driving ring; 361 is the connecting piece; 362 is the spring. Detailed Description of the Embodiment

[0026] The following will Figure 1-2 make a further detailed description of this application in conjunction with the attached

[0027] This embodiment of the application discloses a nitrogen sealing structure for a storage tank. Referring to Figure 1 and Figure 2 , it includes a storage tank body 1 and a safety valve body 3. The storage tank body 1 is provided with a feed inlet 11, a first air inlet 12 and a first air outlet 13. Through the feed inlet 11, materials can be fed into the storage tank body 1 for storage, and through the first air inlet 12, nitrogen can be filled into the storage tank body 1. The safety valve body 3 is fixedly connected to the first air outlet 13, and the exhaust port of the safety valve body 3 is detachably connected with an airbag 2.

[0028] Referring to Figure 1 and Figure 2 , the air inlet of the airbag 2 is fixedly connected with a first pipeline 21. The end of the first pipeline 21 far from the airbag 2 is a second air inlet. The middle part of the first pipeline 21 is communicated with a second pipeline 22. The end of the second pipeline 22 far from the first pipeline 21 is a second air outlet. A first control valve 23 is fixedly connected to the first pipeline 21 on the side close to the airbag 2 of the second pipeline 22. A first one-way valve 25 is arranged at the end of the first pipeline 21 far from the first control valve 23. The first one-way valve 25 allows gas to only flow from the first pipeline 21 to the airbag 2, and the second pipeline 22 is fixedly connected with a second control valve 24.

[0029] Referring to Figure 1 and Figure 2, one end of the first pipeline 21 is fixedly connected with a first mounting part 27, and a second mounting part 31 is fixedly connected at the first exhaust port of the safety valve body 3. A positioning pipe 26 is fixedly connected to the first mounting part 27, and a positioning groove 32 for the positioning pipe 26 to be clamped is provided on the second mounting part 31.

[0030] Referring to Figure 1 and Figure 2 , a connecting rod 33 is provided on the second mounting part 31. There are several connecting rods 33. In this embodiment, the number of connecting rods 33 is three, and the three connecting rods 33 are arranged in a circumferential array around the axis direction of the second mounting part 31. One end of the connecting rod 33 is hinged to the peripheral wall of the second mounting part 31, and the other end of the connecting rod 33 is fixedly connected with a hooking rod 34 for hooking on the first mounting part 27.

[0031] Referring to Figure 1 and Figure 2 , a driving rod 35 is fixedly connected to the hinged end of the connecting rod 33. A driving ring 36 is sleeved on the second mounting part 31 in a sliding manner along the axial direction. The driving ring 36 is used to drive the driving rod 35 to swing. A connecting member 361 corresponding to the driving rod 35 is fixedly connected to the outer peripheral wall of the driving ring 36. A round rod is fixedly connected to the connecting member 361, and a waist-shaped groove 351 is formed on the driving rod 35. The round rod is slidably connected to the waist-shaped groove 351.

[0032] Referring to Figure 1 and Figure 2 , the second mounting part 31 is provided with a spring 362 for forcing the driving ring 36 to slide towards the second mounting part 31. The spring 362 is coaxially sleeved on the second mounting part 31. One end of the spring 362 is fixedly connected to the driving ring 36, and the other end of the spring 362 is fixedly connected to the second mounting part 31.

[0033] The implementation principle of a nitrogen sealing structure of a storage tank in an embodiment of the present application is as follows: An airbag 2 is provided on the safety valve body 3, and the nitrogen discharged from the safety valve body 3 can be recovered through the airbag 2, so as to recycle the discharged nitrogen and improve the utilization rate of resources.

[0034] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A nitrogen sealing structure for a storage tank, characterized in that: It includes a storage tank body (1) and a safety valve body (3). The storage tank body (1) is provided with a feed port (11), a first air inlet (12) and a first air outlet (13). The safety valve body (3) is arranged at the first air outlet (13), and an airbag (2) is detachably connected to the exhaust port of the safety valve body (3); an air inlet of the airbag (2) is connected to a first pipeline (21). The end of the first pipeline (21) far from the airbag (2) is a second air inlet. A second pipeline (22) is arranged in the middle of the first pipeline (21). The end of the second pipeline (22) far from the first pipeline (21) is a second air outlet. A first control valve (23) is arranged on the first pipeline (21) on the side close to the airbag (2) of the second pipeline (22); a first installation part (27) is arranged at the end of the first pipeline (21), and a second installation part (31) is arranged at the first exhaust port of the safety valve body (3). A positioning pipe (26) is arranged on the first installation part (27), and a positioning groove (32) for the positioning pipe (26) to be clamped is arranged on the second installation part (31); a connecting rod (33) is arranged on the second installation part (31). One end of the connecting rod (33) is hinged to the second installation part (31), and the other end of the connecting rod (33) is provided with a hooking rod (34) for hooking on the first installation part (27); a driving rod (35) is arranged at the hinged end of the connecting rod (33). A driving ring (36) is slidably connected to the second installation part (31) along the axial direction. The driving ring (36) is used to drive the driving rod (35) to swing; a first one-way valve (25) is arranged at the end of the first pipeline (21) far from the first control valve (23). The first one-way valve (25) enables the gas to only flow from the first pipeline (21) to the airbag (2), and a second control valve (24) is arranged on the second pipeline (22).

2. The nitrogen sealing structure of a storage tank according to claim 1, characterized in that: A connecting piece (361) corresponding to the driving rod (35) is arranged on the outer peripheral wall of the driving ring (36). A round rod is arranged on the connecting piece (361), and a waist-shaped groove (351) is arranged on the driving rod (35). The round rod is slidably connected to the waist-shaped groove (351).

3. The nitrogen sealing structure of a storage tank according to claim 2, characterized in that: The second installation part (31) is provided with a spring (362) that forces the driving ring (36) to slide towards the second installation part (31).

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