Novel methyl ethyl carbonate storage tank nitrogen sealing device

Abstract

The utility model discloses a novel methyl ethyl carbonate storage tank nitrogen sealing device which comprises a storage tank body, a feeding pipe is fixed to the upper end of the storage tank body, a pressure gauge is fixedly installed at the upper end of the storage tank body, a nitrogen inlet pipe is fixedly installed on one side of the upper end of the storage tank body, and a nitrogen outlet pipe is fixedly installed on the other side of the upper end of the storage tank body. A standby nitrogen adjusting mechanism is arranged on the outer wall of the storage tank body. According to the utility model, the standby nitrogen regulating mechanism is arranged, so that when the first nitrogen regulating valve and the second control valve are damaged, the standby nitrogen regulating mechanism can be controlled to work through the third pressure transmitter and the fourth pressure transmitter, the air pressure in the tank is kept stable, and air is effectively prevented from entering the tank body; the quality and the safety of the methyl ethyl carbonate are influenced, the air tightness of the tank body is improved, and the safety of transportation and storage of the methyl ethyl carbonate is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen sealing of storage tanks, in particular to a novel nitrogen sealing device for ethyl methyl carbonate storage tanks. Background Art

[0002] Ethyl methyl carbonate is an organic compound with the molecular formula C4H8O3. It is a colorless, transparent liquid that is insoluble in water. It can be used in organic synthesis and is an excellent solvent for lithium-ion battery electrolytes. Ethyl methyl carbonate should be stored in a cool, ventilated, and dry place and transported in accordance with regulations for flammable chemicals. Therefore, storage tanks are used to store ethyl methyl carbonate.

[0003] In order to prevent the ethyl methyl carbonate in the tank from directly contacting with the air when storing ethyl methyl carbonate, the existing ethyl methyl carbonate storage tank is sealed with a nitrogen device. A nitrogen inlet pipe and a nitrogen outlet pipe are fixedly installed on the outside of the tank body. The outer walls of the nitrogen inlet pipe and the nitrogen outlet pipe are fixedly installed with control valves. When the pressure is high or low, the corresponding control valve will automatically open to control the pressure inside the tank body. However, since there is only one layer of safety protection equipment, when the control valve on the outer wall of the nitrogen inlet pipe or the nitrogen outlet pipe is damaged, the nitrogen supply device will not be able to smoothly transport nitrogen to the inside of the tank body through the nitrogen inlet pipe, and the nitrogen outlet pipe will not be able to smoothly relieve pressure, which cannot meet the needs of process safety. The storage tank is still likely to be suffocated or exploded. Moreover, when the air pressure in the storage tank drops, the air intake of the breathing valve may suck some air into the storage tank, affecting the nitrogen sealing effect of the storage tank and the storage safety of ethyl methyl carbonate. Utility Model Content

[0004] The purpose of the utility model is to provide a novel nitrogen sealing device for ethyl methyl carbonate storage tanks to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A novel nitrogen sealing device for an ethyl methyl carbonate storage tank comprises a tank body, a feed pipe is fixed to the upper end of the tank body, a pressure gauge is fixed to the upper end of the tank body, a nitrogen inlet pipe is fixed to one side of the upper end of the tank body, a nitrogen outlet pipe is fixed to the other side of the upper end of the tank body, and a standby nitrogen regulating mechanism is provided on the outer wall of the tank body;

[0007] The standby nitrogen regulating mechanism comprises a standby nitrogen storage tank, an outer wall of which is fixedly mounted a standby nitrogen inlet pipe, and one end of the standby nitrogen inlet pipe away from the standby nitrogen storage tank is fixedly connected to the storage tank body.

[0008] Preferably, a first fire-blocking single-call valve is fixedly installed on the outer wall of the feed pipe, and the storage tank body is made of S stainless steel.

[0009] Preferably, the pressure gauge is fixedly connected to a first pressure controller and a second pressure controller.

[0010] Preferably, a first nitrogen regulating valve and a first one-way valve are fixedly installed on the outer wall of the nitrogen inlet pipe.

[0011] Preferably, a second control valve, a second one-way valve and a flame arrester are fixedly mounted on the outer wall of the nitrogen outlet pipe, and the second one-way valve is located between the flame arrester and the second control valve.

[0012] Preferably, a second nitrogen regulating valve is fixedly installed on the outer wall of the above-mentioned standby nitrogen inlet pipeline, a standby nitrogen discharge pipeline is fixedly installed on the outer wall of the storage tank body, and a fourth control valve is fixedly installed on the outer wall of the standby nitrogen discharge pipeline.

[0013] Preferably, a third pressure transmitter is fixedly mounted on the outer wall of the nitrogen inlet pipe, and the third pressure transmitter is located between the first nitrogen regulating valve and the first one-way valve.

[0014] Preferably, a fourth pressure transmitter is fixedly mounted on the outer wall of the nitrogen outlet pipe, and the fourth pressure transmitter is located between the second control valve and the second one-way valve.

[0015] The beneficial effects of the present invention are as follows: a backup nitrogen regulating mechanism is provided in the present invention, which can control the operation of the backup nitrogen regulating mechanism through the third pressure transmitter and the fourth pressure transmitter when the first nitrogen regulating valve and the second control valve are damaged, thereby maintaining the air pressure in the tank stable, effectively preventing air from entering the interior of the tank body and affecting the quality and safety of ethyl methyl carbonate, improving the air tightness of the tank body, and effectively ensuring the safety of transportation and storage of ethyl methyl carbonate, and solving the problem that when the control valve of the nitrogen inlet pipeline or the nitrogen outlet pipeline passing through the outer wall is damaged, the first layer of safety protection equipment still has the possibility of suction or explosion of the storage tank, and when the air pressure in the storage tank is reduced, the air intake of the breathing valve may suck some air into the storage tank, thereby affecting the nitrogen sealing effect of the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present utility model.

[0017] Figure 2 It is a schematic structural diagram of the rear view of the present invention.

[0018] In the figure: storage tank body 100; feed pipe 2; first flame-arresting single-call valve 21; nitrogen inlet pipe 3; first nitrogen regulating valve 31; first one-way valve 32; nitrogen outlet pipe 4; second control valve 41; second one-way valve 42; flame arrester 43; pressure gauge 5; first pressure controller 51; second pressure controller 52; spare nitrogen storage tank 6; spare nitrogen inlet pipeline 61; second nitrogen regulating valve 62; third pressure transmitter 63; spare nitrogen discharge pipeline 64; fourth control valve 65; fourth pressure transmitter 66. DETAILED DESCRIPTION

[0019] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0020] The utility model mentions a new type of nitrogen sealing device for ethyl methyl carbonate storage tank, such as Figure 1 and 2 , comprising a storage tank body 100, a feed pipe 2 is fixed to the upper end of the storage tank body 100, a pressure gauge 5 is fixedly installed on the upper end of the storage tank body 100, a nitrogen inlet pipe 3 is fixedly installed on one side of the upper end of the storage tank body 100, a nitrogen outlet pipe 4 is fixedly installed on the other side of the upper end of the storage tank body 100, and a standby nitrogen regulating mechanism is provided on the outer wall of the storage tank body 100; a first fire-blocking single-call valve 21 is fixedly installed on the outer wall of the feed pipe 2, and the storage tank body 100 is made of S30408 stainless steel;

[0021] The storage tank body 100 is made of S30408 stainless steel, which makes the storage tank body 100 more airtight and enables the storage tank body 100 to better store ethyl methyl carbonate; the standby nitrogen regulating mechanism can urgently adjust the air pressure inside the storage tank body 100 when problems occur with the nitrogen inlet pipe 3 and the nitrogen outlet pipe 4, thereby preventing the ethyl methyl carbonate inside the storage tank body 100 from contacting with the air, and achieving better airtightness; the nitrogen inlet pipe 3 is externally connected to a nitrogen supply device, which adopts existing technology; a controller is installed on the outside of the storage tank body 100 in a conventional manner; the pressure gauge 5 is electrically connected to the controller, the first pressure controller 51 is electrically connected to the controller, the second pressure controller 52 is electrically connected to the controller, the third pressure transmitter 63 is electrically connected to the controller, and the fourth pressure transmitter 66 is electrically connected to the controller.

[0022] The pressure gauge 5 is fixedly connected to a first pressure controller 51 and a second pressure controller 52;

[0023] The first pressure controller 51 is electrically connected to the pressure gauge 5. When the value of the pressure gauge 5 is lower than the pressure value specified by the first pressure controller 51, the first pressure controller 51 can control the first nitrogen regulating valve 31 to automatically open, and the nitrogen inlet pipe 3 transports nitrogen, so that the nitrogen enters the storage tank body 100 through the first one-way valve 32; the second pressure controller 52 is electrically connected to the pressure gauge 5. When the pressure value measured by the pressure gauge 5 is higher than the high pressure value specified by the second pressure controller 52, the second pressure controller 52 controls the second control valve 41 to open, so that the nitrogen inside the storage tank body 100 is discharged through the nitrogen outlet pipe 4.

[0024] A first nitrogen regulating valve 31 and a first one-way valve 32 are fixedly installed on the outer wall of the nitrogen inlet pipe 3; a second control valve 41, a second one-way valve 42 and a flame arrester 43 are fixedly installed on the outer wall of the nitrogen outlet pipe 4, and the second one-way valve 42 is located between the flame arrester 43 and the second control valve 41;

[0025] The first nitrogen regulating valve 31 can control the opening and closing of the nitrogen inlet pipe 3, and the first one-way valve 32 can prevent gas leakage inside the storage tank body 100; the second control valve 41 can control the opening and closing of the nitrogen outlet pipe 4; the second one-way valve 42 can prevent external air from entering the interior of the storage tank body 100 through the nitrogen outlet pipe 4; the flame arrester 43 can improve the safety of the equipment.

[0026] The standby nitrogen regulating mechanism includes a standby nitrogen storage tank 6, a standby nitrogen inlet pipe 61 is fixedly mounted on the outer wall of the standby nitrogen storage tank 6, and one end of the standby nitrogen inlet pipe 61 away from the standby nitrogen storage tank 6 is fixedly connected to the tank body 100; a second nitrogen regulating valve 62 is fixedly mounted on the outer wall of the standby nitrogen inlet pipe 61, a standby nitrogen discharge pipe 64 is fixedly mounted on the outer wall of the tank body 100, and a fourth control valve 65 is fixedly mounted on the outer wall of the standby nitrogen discharge pipe 64; a third pressure transmitter 63 is fixedly mounted on the outer wall of the nitrogen inlet pipe 3, and the third pressure transmitter 63 is located between the first nitrogen regulating valve 31 and the first one-way valve 32; a fourth pressure transmitter 66 is fixedly mounted on the outer wall of the nitrogen outlet pipe 4, and the fourth pressure transmitter 66 is located between the second control valve 41 and the second one-way valve 42;

[0027] The spare nitrogen storage tank 6 stores nitrogen. The spare nitrogen storage tank 6 adopts the existing technology. The spare nitrogen storage tank 6 is fixedly mounted on the outer wall of the storage tank body 100; the third pressure transmitter 63 is located between the first nitrogen regulating valve 31 and the first one-way valve 32. The third pressure transmitter 63 is electrically connected to the second nitrogen regulating valve 62, and the fourth pressure transmitter 66 is electrically connected to the fourth control valve 65; when the first pressure controller 51 controls the first nitrogen regulating valve 31 to open, the third pressure transmitter 63 works automatically. When the first nitrogen regulating valve 31 is opened normally, nitrogen can pass through the first nitrogen regulating valve 31 normally and be input into the storage tank body 100. The third pressure transmitter 63 feeds back the detection result to the controller, and the second nitrogen regulating valve 62 is in a closed state. When the first nitrogen regulating valve 31 is damaged and cannot be opened normally, the air pressure value between the first nitrogen regulating valve 31 and the first one-way valve 32 is abnormal. At this time, the third pressure transmitter 63 is automatically connected to the fourth control valve 65. The sensor 63 feeds back the detection result to the controller, and the second nitrogen regulating valve 62 automatically opens, so that the spare nitrogen storage tank 6 can be input into the storage tank body 100 through the spare nitrogen inlet pipe 61 to adjust the air pressure; when the air pressure value inside the storage tank body 100 is too high, the second pressure controller 52 controls the second control valve 41 to open, and the nitrogen inside the storage tank body 100 is discharged through the nitrogen outlet pipe 4, and the nitrogen is discharged through the second one-way valve 42 and the flame arrester 43; and while the second control valve 41 is working, the fourth pressure transmitter 66 works at the same time. If the second control valve 41 is damaged and cannot be opened normally, the air pressure value between the second control valve 41 and the second one-way valve 42 is abnormal, and the fourth pressure transmitter 66 feeds back the detection result to the controller, so that the fourth control valve 65 is automatically opened, so that the nitrogen inside the storage tank body 100 can be discharged through the spare nitrogen discharge pipe 64, and a second flame arrester is fixedly installed at the end of the spare nitrogen discharge pipe 64.

[0028] The above structures and principles are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0029] The working principle of the present invention is as follows: ethyl methyl carbonate is input into the storage tank body 100 through the feed pipe 2. When the first pressure controller 51 detects that the air pressure value inside the storage tank body 100 is lower than the specified air pressure value, the first pressure controller 51 controls the first nitrogen regulating valve 31 to open automatically, so that the nitrogen inlet pipe 3 inputs nitrogen into the storage tank body 100. At the same time, the third pressure transmitter 63 detects the air pressure value between the first nitrogen regulating valve 31 and the first one-way valve 32. If the air pressure value is normal, the second nitrogen regulating valve 62 is closed normally. If the first nitrogen regulating valve 31 is damaged, affecting the nitrogen intake, the air pressure value detected by the third pressure transmitter 63 is abnormal, then the third pressure transmitter 63 controls the second nitrogen regulating valve 62 to open, and starts the standby nitrogen regulating mechanism, so that the nitrogen inside the standby nitrogen storage tank 6 is input into the storage tank through the standby nitrogen inlet pipe 61. Inside the tank body 100, when the air pressure value detected by the second pressure controller 52 is higher than the specified maximum air pressure value, the second pressure controller 52 controls the second control valve 41 to open, so that the nitrogen inside the storage tank body 100 can be discharged through the nitrogen outlet pipe 4. At the same time, the fourth pressure transmitter 66 detects the air pressure value between the second control valve 41 and the second one-way valve 42. When the second control valve 41 is working normally, the air pressure value between the second control valve 41 and the second one-way valve 42 detected by the fourth pressure transmitter 66 is normal, and the fourth control valve 65 is closed. If the second control valve 41 is damaged and cannot be discharged normally, the air pressure value between the second control valve 41 and the second one-way valve 42 is abnormal, and the fourth pressure transmitter 66 controls the fourth control valve 65 to open automatically, so that the nitrogen inside the storage tank body 100 can be discharged through the backup nitrogen discharge pipe 64.

[0030] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A novel nitrogen sealing device for an ethyl methyl carbonate storage tank, comprising a storage tank body (100), wherein a feed pipe (2) is fixed to the upper end of the storage tank body (100), characterized in that: A pressure gauge (5) is fixedly mounted on the upper end of the storage tank body (100), a nitrogen inlet pipe (3) is fixedly mounted on one side of the upper end of the storage tank body (100), a nitrogen outlet pipe (4) is fixedly mounted on the other side of the upper end of the storage tank body (100), and a standby nitrogen regulating mechanism is provided on the outer wall of the storage tank body (100); The standby nitrogen regulating mechanism comprises a standby nitrogen storage tank (6), a standby nitrogen inlet pipe (61) is fixedly mounted on the outer wall of the standby nitrogen storage tank (6), and one end of the standby nitrogen inlet pipe (61) away from the standby nitrogen storage tank (6) is fixedly connected to the storage tank body (100).

2. The novel nitrogen sealing device for ethyl methyl carbonate storage tank according to claim 1, characterized in that: A first fire-blocking single-call valve (21) is fixedly mounted on the outer wall of the feed pipe (2), and the storage tank body (100) is made of S30408 stainless steel.

3. The novel nitrogen sealing device for ethyl methyl carbonate storage tank according to claim 1, characterized in that: The pressure gauge (5) is fixedly connected to a first pressure controller (51) and a second pressure controller (52).

4. The novel nitrogen sealing device for ethyl methyl carbonate storage tank according to claim 1, characterized in that: A first nitrogen regulating valve (31) and a first one-way valve (32) are fixedly mounted on the outer wall of the nitrogen inlet pipe (3).

5. The novel nitrogen sealing device for ethyl methyl carbonate storage tank according to claim 1, characterized in that: A second control valve (41), a second one-way valve (42) and a flame arrester (43) are fixedly mounted on the outer wall of the nitrogen outlet pipe (4), and the second one-way valve (42) is located between the flame arrester (43) and the second control valve (41).

6. The novel nitrogen sealing device for ethyl methyl carbonate storage tank according to claim 1, characterized in that: A second nitrogen regulating valve (62) is fixedly mounted on the outer wall of the standby nitrogen inlet pipe (61), a standby nitrogen discharge pipe (64) is fixedly mounted on the outer wall of the storage tank body (100), and a fourth control valve (65) is fixedly mounted on the outer wall of the standby nitrogen discharge pipe (64).

7. The novel nitrogen sealing device for ethyl methyl carbonate storage tank according to claim 1, characterized in that: A third pressure transmitter (63) is fixedly mounted on the outer wall of the nitrogen inlet pipe (3), and the third pressure transmitter (63) is located between the first nitrogen regulating valve (31) and the first one-way valve (32).

8. The novel nitrogen sealing device for ethyl methyl carbonate storage tank according to claim 1, characterized in that: A fourth pressure transmitter (66) is fixedly mounted on the outer wall of the nitrogen outlet pipe (4), and the fourth pressure transmitter (66) is located between the second control valve (41) and the second one-way valve (42).

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