Nitrogen pressure adjusting equipment for PDCPD product production

Abstract

The utility model discloses nitrogen pressure regulating equipment for PDCPD product production, which belongs to the field of nitrogen pressure regulating equipment and comprises a storage tank, a nitrogen pressure regulating mechanism is arranged on the left side of the storage tank and comprises an air pressure sensor, a nitrogen storage tank, a one-way valve, a nitrogen supply valve, a pressure reducing valve, an air inlet valve and a pressure release valve. The air pressure sensor is fixedly connected to the top face of the storage tank, and when the air pressure sensor detects that the pressure of nitrogen discharged by materials in the storage tank changes and becomes low, nitrogen is conveyed into the storage tank through the nitrogen supply valve till the pressure of the nitrogen in the storage tank reaches a preset value detected by the air pressure sensor, and the nitrogen pressure in the storage tank is adjusted. Therefore, the problem that the tank body deforms due to the fact that the nitrogen pressure is reduced to form negative pressure can be effectively solved, nitrogen can be added into the tank body in time according to the change of the nitrogen pressure in the tank body to eliminate the negative pressure and maintain the pressure stable, and the purpose of effectively adjusting the nitrogen pressure is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen pressure regulating equipment field especially relates to a nitrogen pressure regulating equipment of PDCPD product production. BACKGROUND

[0002] PDCPD product is the product made of polydicyclopentadiene material. PDCPD is a kind of high molecular polymer, and double ring pentadiene (DCPD) purified from petrochemical byproduct C5, C9 fraction is prepared under the action of metal catalyst through olefin metathesis reaction or ring-opening metathesis polymerization. This material has the advantages of thermosetting resin and thermoplastic engineering plastic, and has the characteristics of light weight, high strength, high toughness, excellent mechanical properties, good weather resistance, corrosion resistance and finishing property. PDCPD product is widely used in automobile manufacturing, building engineering template, agricultural machinery, military, civil, medical field, especially in the application scene needing light weight, high strength and corrosion resistance.

[0003] PDCPD product uses nitrogen in the production process, mainly because the traditional PDCPD material is easy to react with water oxygen, which will cause the material performance to drop significantly. Nitrogen, as an inert gas, is used to replace oxygen in air to prevent PDCPD material from reacting with oxygen or moisture during processing. Using nitrogen protection can effectively maintain the stability and performance of the material, and ensure the quality of the product.

[0004] In the prior art, the Chinese utility model patent with publication number "CN208532738U" and patent name "a nitrogen pressure regulating device" discloses a nitrogen pressure regulating equipment, which records "including: pressure regulating barrel, grape wine tank and nitrogen gas conveying pipeline;One end of the nitrogen gas conveying pipeline is provided with a nitrogen gas output device, the other end of the nitrogen gas conveying pipeline is communicated with the top of a plurality of grape wine tanks, the position of the nitrogen gas conveying pipeline between the grape wine tank and the nitrogen gas output device is also communicated with the pressure regulating barrel, and the nitrogen gas conveying pipeline is communicated with the bottom of the pressure regulating barrel" and other technical schemes;

[0005] However, the nitrogen pressure regulating device in the actual use process only solves the problem that the nitrogen pressure is too large to avoid the explosion of the tank body, and it is difficult to solve the problem that the tank body will be deformed. After the material in the tank is continuously discharged, the nitrogen pressure will also be reduced, a negative pressure will be formed and the tank body will be deformed, which cannot solve the problem that nitrogen is added to the tank in time according to the change of nitrogen pressure in the tank to eliminate negative pressure and maintain stable pressure. At the same time, the nitrogen discharged due to high pressure is directly discharged into the air, which causes waste of nitrogen and increases the production cost of PDCPD product, thereby reducing the stability and quality of PDCPD product in the production process;

[0006] Therefore, to solve the above technical problems, the utility model provides a nitrogen pressure adjusting equipment for PDCPD product production. Utility model content

[0007] The utility model discloses a main purpose at providing a kind of nitrogen pressure adjusting equipment for PDCPD product production, can effectively solve the problem in background art.

[0008] To achieve the above object, the technical scheme that the utility model adopts is as follows:

[0009] A kind of nitrogen pressure adjusting equipment for PDCPD product production, including storage tank, the left side of the storage tank is equipped with nitrogen pressure regulating mechanism, and nitrogen pressure regulating mechanism includes air pressure sensor, nitrogen storage tank, check valve, nitrogen supply valve, pressure reducing valve, inlet valve and pressure relief valve, the air pressure sensor is fixedly connected at the top surface of storage tank, the nitrogen supply valve is fixedly connected at the bottom end of nitrogen storage tank bottom nitrogen discharge pipe, and first conveying pipe is connected between the output end of nitrogen supply valve and the input end of pressure reducing valve, the inlet valve is fixedly connected at the left end of storage tank left side wall inlet pipe, and second conveying pipe is connected between the input end of inlet valve and the output end of pressure reducing valve, the pressure relief valve is fixedly connected at the right end of storage tank right side pressure relief pipe, the check valve is fixedly connected at the top end of nitrogen storage tank top nitrogen return pipe, and third conveying pipe is connected between the input end of check valve and the output end of pressure relief valve.

[0010] Preferably, the top surface of the storage tank is fixedly installed with a feed pipe, and the top end of the feed pipe is fixedly installed with a feed valve, the bottom surface of the storage tank is fixedly installed with a discharge pipe, and the bottom end of the discharge pipe is fixedly installed with a discharge valve.

[0011] Preferably, the top of the left side wall of the storage tank is fixedly installed with an inlet pipe, and the left end of the inlet pipe is fixedly installed with an inlet valve, the top surface of the storage tank is also fixedly installed with a detection port, and the top end of the detection port is fixedly installed with an air pressure sensor.

[0012] Preferably, the bottom of the right side wall of the storage tank is fixedly installed with an exhaust pipe, and the right end of the exhaust pipe is fixedly installed with an exhaust valve, the output end of the exhaust valve is fixedly installed with a detection tube, and the outer wall top of the detection tube is fixedly installed with a nitrogen detector.

[0013] Preferably, the bottom surface of the nitrogen storage tank is fixedly installed with a nitrogen discharge pipe, and the bottom end of the nitrogen discharge pipe is fixedly installed with a nitrogen supply valve, first conveying pipe is fixedly installed between the output end of the nitrogen supply valve and the input end of the pressure reducing valve, and second conveying pipe is fixedly installed between the output end of the pressure reducing valve and the input end of the inlet valve.

[0014] Preferably, the top surface of the nitrogen storage tank is fixedly installed with a nitrogen return pipe, the top end of the nitrogen return pipe is fixedly installed with a one-way valve, the right side wall of the storage tank is fixedly installed with a pressure relief pipe at the top, the right end of the pressure relief pipe is fixedly installed with a pressure relief valve, and the output end of the pressure relief valve is fixedly installed with a third conveying pipe between the input end of the one-way valve.

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] In the utility model, the nitrogen pressure regulating mechanism is arranged, the exhaust valve, the nitrogen supply valve, the pressure relief valve and the air inlet valve are opened, the nitrogen supply valve can convey nitrogen into the storage tank through the nitrogen discharge pipe, when the nitrogen is conveyed through the first conveying pipe and the second conveying pipe and enters the storage tank from the air inlet pipe, the high-pressure nitrogen can be reduced to the safe range through the pressure relief valve, so that the damage of the storage tank caused by excessive nitrogen pressure is prevented, after the nitrogen enters the storage tank, the gas in the storage tank will be squeezed, the gas in the storage tank will be discharged through the exhaust pipe, when the nitrogen detector on the detection pipe detects that the discharged gas contains nitrogen, the exhaust valve is closed, at this time, the inside of the storage tank is full of nitrogen, after the continuous conveying of nitrogen, the pressure in the storage tank will be continuously increased, when the air pressure sensor detects that the air pressure in the storage tank reaches the preset value, the nitrogen supply valve is closed to stop the gas supply in the storage tank, so that the purpose of realizing the rapid replacement of the gas in the storage tank by nitrogen is achieved.

[0017] When the air pressure sensor detects that the nitrogen pressure of the material in the storage tank changes and becomes low, nitrogen is conveyed into the storage tank through the nitrogen supply valve until the nitrogen pressure in the storage tank reaches the preset value detected by the air pressure sensor, so that the problem that the deformation of the tank body caused by the negative pressure formed by the reduction of the nitrogen pressure can be effectively solved, nitrogen can be added into the tank body in time according to the change of the nitrogen pressure in the tank body to eliminate the negative pressure and maintain the stable pressure, and the purpose of effectively regulating the nitrogen pressure is achieved.

[0018] Meanwhile, when the air pressure sensor detects that the nitrogen pressure in the storage tank exceeds the preset value, the pressure relief valve and the one-way valve are opened, the excess nitrogen in the storage tank is discharged through the pressure relief pipe and then conveyed into the storage tank from the nitrogen return pipe through the third conveying pipe, when the air pressure sensor detects that the pressure in the tank body decreases to the preset value, the one-way valve and the pressure relief valve are closed, so that the problem that the tank body explodes caused by the excessive nitrogen pressure is avoided, the purpose of effectively recycling the excess nitrogen is achieved, the waste of nitrogen is avoided, the production cost of the PDCPD product is reduced, and the stability and quality of the PDCPD product in the production process are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2The whole structure schematic diagram of the storage tank of the utility model is shown in the figure.

[0021] Figure 3 The whole structure schematic diagram of the nitrogen pressure regulating mechanism of the utility model is shown in the figure. Figure 1 The structure amplification schematic diagram of the A place of the utility model is shown in the figure.

[0022] Figure 4 The whole structure schematic diagram of the nitrogen pressure regulating mechanism of the utility model is shown in the figure.

[0023] In the figure: 1, storage tank, 2, nitrogen pressure regulating mechanism, 3, feed pipe, 4, feed valve, 5, discharge pipe, 6, discharge valve, 7, gas inlet pipe, 8, pressure relief pipe, 9, detection port, 10, gas pressure sensor, 11, exhaust pipe, 12, exhaust valve, 13, detection pipe, 14, nitrogen detector, 15, nitrogen storage tank, 16, nitrogen return pipe, 17, one-way valve, 18, nitrogen discharge pipe, 19, nitrogen supply valve, 20, pressure reducing valve, 21, first conveying pipe, 22, second conveying pipe, 23, gas inlet valve, 24, pressure relief valve, 25, third conveying pipe. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0025] As shown in Figure 1 - Figure 4 A nitrogen pressure regulating equipment for PDCPD product production, including storage tank 1, the left side of storage tank 1 is equipped with nitrogen pressure regulating mechanism 2, and nitrogen pressure regulating mechanism 2 includes gas pressure sensor 10, nitrogen storage tank 15, one-way valve 17, nitrogen supply valve 19, pressure reducing valve 20, gas inlet valve 23 and pressure relief valve 24, gas pressure sensor 10 is fixedly connected to the top surface of storage tank 1, nitrogen supply valve 19 is fixedly connected to the bottom end of nitrogen discharge pipe 18 at the bottom surface of nitrogen storage tank 15, and the output end of nitrogen supply valve 19 is connected with the input end of pressure reducing valve 20 through first conveying pipe 21, gas inlet valve 23 is fixedly connected to the left end of gas inlet pipe 7 at the left side wall of storage tank 1, and the input end of gas inlet valve 23 is connected with the output end of pressure reducing valve 20 through second conveying pipe 22, pressure relief valve 24 is fixedly connected to the right end of pressure relief pipe 8 at the right side of storage tank 1, one-way valve 17 is fixedly connected to the top end of nitrogen return pipe 16 at the top surface of nitrogen storage tank 15, and the input end of one-way valve 17 is connected with the output end of pressure relief valve 24 through third conveying pipe 25.

[0026] As shown in Figure 2As shown, the top surface of the storage tank 1 is fixedly installed with a feeding pipe 3, and the top end of the feeding pipe 3 is fixedly installed with a feeding valve 4. Opening the feeding valve 4 can store the PDCPD product material in the storage tank 1 through the feeding pipe 3. The bottom surface of the storage tank 1 is fixedly installed with a discharging pipe 5, and the bottom end of the discharging pipe 5 is fixedly installed with a discharging valve 6. Opening the discharging valve 6 can discharge the material stored in the storage tank 1 through the discharging pipe 5.

[0027] As shown in the Figure 2 left side wall top of the storage tank 1 is fixedly installed with an air inlet pipe 7, and the left end of the air inlet pipe 7 is fixedly installed with an air inlet valve 23. Opening the air inlet valve 23 can make nitrogen enter the storage tank 1 through the air inlet pipe 7. The top surface of the storage tank 1 is also fixedly installed with a detection port 9, and the top end of the detection port 9 is fixedly installed with a gas pressure sensor 10. The gas pressure sensor 10 installed at the top end of the detection port 9 is used for real-time monitoring of the nitrogen pressure in the storage tank 1.

[0028] As shown in the Figure 3 bottom of the right side wall of the storage tank 1 is fixedly installed with an exhaust pipe 11, and the right end of the exhaust pipe 11 is fixedly installed with an exhaust valve 12. The output end of the exhaust valve 12 is fixedly installed with a detection pipe 13, and the outer wall top of the detection pipe 13 is fixedly installed with a nitrogen detector 14. Opening the exhaust valve 12 can discharge the gas in the storage tank 1. When discharging, the nitrogen detector 14 on the top surface of the detection pipe 13 can detect whether the discharged gas contains nitrogen, so as to prevent excessive nitrogen from being discharged when replacing the gas in the storage tank 1.

[0029] As shown in the Figure 4 bottom surface of the nitrogen storage tank 15 is fixedly installed with a nitrogen discharge pipe 18, and the bottom end of the nitrogen discharge pipe 18 is fixedly installed with a nitrogen supply valve 19. The output end of the nitrogen supply valve 19 and the input end of the pressure reducing valve 20 are fixedly installed with a first conveying pipe 21. The output end of the pressure reducing valve 20 and the input end of the air inlet valve 23 are fixedly installed with a second conveying pipe 22. Opening the nitrogen supply valve 19 can discharge the nitrogen in the nitrogen storage tank 15 from the nitrogen discharge pipe 18, and convey it to the pressure reducing valve 20 through the first conveying pipe 21, so that the pressure reducing valve 20 can reduce the pressure of the high-pressure nitrogen, prevent the high pressure of the nitrogen from damaging the equipment and pipeline, and after opening the air inlet valve 23, the nitrogen with stable pressure can be conveyed from the air inlet pipe 7 to the storage tank 1 through the first conveying pipe 21.

[0030] As shown in the Figure 4As shown, the top surface of the nitrogen storage tank 15 is fixedly installed with a nitrogen return pipe 16, the top end of the nitrogen return pipe 16 is fixedly installed with a one-way valve 17, the right side wall top of the storage tank 1 is fixedly installed with a pressure relief pipe 8, the right end of the pressure relief pipe 8 is fixedly installed with a pressure relief valve 24, the output end of the pressure relief valve 24 and the input end of the one-way valve 17 are fixedly installed with a third conveying pipe 25, opening the pressure relief valve 24 and the one-way valve 17 can discharge the excess nitrogen in the storage tank 1 and through the third conveying pipe 25 to the nitrogen storage tank 15 for recycling and storage, preventing waste of nitrogen, and through the one-way valve 17, the problem that the nitrogen in the nitrogen storage tank 15 will enter the storage tank 1 in reverse when the nitrogen flows into the nitrogen storage tank 15 can be avoided.

[0031] The specific use principle of the nitrogen pressure regulating mechanism 2 is as follows:

[0032] When the exhaust valve 12, the nitrogen supply valve 19, the pressure reducing valve 20 and the inlet valve 23 are opened, the high-pressure nitrogen gas in the nitrogen storage tank 15 will be discharged through the nitrogen discharge pipe 18 and delivered to the first delivery pipe 21 through the nitrogen supply valve 19. When the gas in the first delivery pipe 21 passes through the pressure reducing valve 20, the pressure reducing valve 20 can reduce the pressure of the high-pressure nitrogen gas. The nitrogen gas with reduced delivery pressure will enter the storage tank 1 from the inlet pipe 7 through the inlet valve 23. After the nitrogen gas continuously enters the storage tank 1, the gas in the storage tank 1 will be squeezed out through the exhaust pipe 11. The discharged gas will be discharged from the detection pipe 13 through the exhaust valve 12. When the nitrogen detector 14 installed on the detection pipe 13 detects that the discharged gas contains nitrogen, the exhaust valve 12 will be closed to stop the discharge of the gas in the storage tank 1. At this time, the storage tank 1 will be filled with nitrogen gas, and as the nitrogen gas continues to increase, the nitrogen pressure in the storage tank 1 will continue to increase. When the gas pressure sensor 10 installed at the top of the detection port 9 detects that the nitrogen pressure in the storage tank 1 reaches the preset value, the nitrogen supply valve 19, the pressure reducing valve 20 and the inlet valve 23 will be closed to stop the delivery of nitrogen gas to the storage tank 1. In this way, the nitrogen replacement of the storage tank 1 can be completed. At this time, the feed valve 4 is opened to deliver the PDCPD product material which needs to be protected by nitrogen to the storage tank 1 through the feed pipe 3. As the material continuously enters the storage tank 1, the nitrogen pressure in the storage tank 1 also changes and gradually increases. When the gas pressure sensor 10 detects that the nitrogen pressure in the storage tank 1 increases, the inlet valve 23 and the one-way valve 17 will be opened. The excess nitrogen gas in the storage tank 1 due to the increase of the material will be discharged through the pressure relief pipe 8 and play a pressure relief role. The nitrogen gas discharged from the pressure relief pipe 8 will be re-delivered to the nitrogen storage tank 15 through the third delivery pipe 25 from the nitrogen return pipe 16 for recycling and storage, so as to avoid the waste of nitrogen gas. Until the material enters the storage tank 1, and the gas pressure sensor 10 detects that the nitrogen pressure in the storage tank 1 decreases to the preset value, the inlet valve 23 and the one-way valve 17 are closed to prevent the continuous loss of nitrogen gas in the storage tank 1. At the same time, the nitrogen gas in the storage tank 1 will maintain a stable pressure. When the discharge pipe 5 is opened to discharge the material in the storage tank 1 through the feed valve 4, the gas pressure sensor 10 detects that the nitrogen in the storage tank 1 decreases to the preset value, and the nitrogen supply valve 19, the pressure reducing valve 20 and the inlet valve 23 are opened again to deliver nitrogen gas to the storage tank 1. Until the gas pressure sensor 10 detects that the nitrogen pressure in the storage tank 1 reaches the preset value, it can be achieved. In this way, the nitrogen pressure in the storage tank 1 can always be kept stable, which can effectively solve the problem that the nitrogen pressure decreases to form negative pressure and cause the deformation of the tank body. According to the change of the nitrogen pressure in the tank body, nitrogen can be added to the tank body in time to eliminate the negative pressure and maintain the stable pressure, which can effectively regulate the nitrogen pressure and improve the stability and quality of the PDCPD product in the production process.

[0033] The above merely is preferred embodiment of the present utility model and is not used for limiting the present utility model, although the present utility model is described in detail with reference to the foregoing embodiment, however, can make various improvements and can replace the components therein with equivalent in the case of not departing from the scope of the present utility model, or make equivalent replacement to part technical features, all should be contained in the protection scope of the present utility model in the spirit and principle of the present utility model.

Claims

1. A nitrogen pressure regulating apparatus for PDCPD article production comprising a storage tank (1), characterized in that: The left side of the storage tank (1) is provided with a nitrogen pressure regulating mechanism (2), and the nitrogen pressure regulating mechanism (2) comprises an air pressure sensor (10), a nitrogen storage tank (15), a one-way valve (17), a nitrogen supply valve (19), a pressure reducing valve (20), an air inlet valve (23) and a pressure relief valve (24), the air pressure sensor (10) is fixedly connected to the top surface of the storage tank (1), the nitrogen supply valve (19) is fixedly connected to the bottom end of the nitrogen discharge pipe (18) at the bottom of the nitrogen storage tank (15), and the output end of the nitrogen supply valve (19) is connected with the input end of the pressure reducing valve (20) through the first conveying pipe (21), the air inlet valve (23) is fixedly connected to the left end of the air inlet pipe (7) at the left side wall of the storage tank (1), and the input end of the air inlet valve (23) is connected with the output end of the pressure reducing valve (20) through the second conveying pipe (22), the pressure relief valve (24) is fixedly connected to the right end of the pressure relief pipe (8) at the right side wall of the storage tank (1), the one-way valve (17) is fixedly connected to the top end of the nitrogen return pipe (16) at the top of the nitrogen storage tank (15), and the input end of the one-way valve (17) is connected with the output end of the pressure relief valve (24) through the third conveying pipe (25).

2. A nitrogen pressure regulating apparatus for PDCPD article production according to claim 1, characterized by: The top surface of the storage tank (1) is fixedly provided with a feeding pipe (3), and the top end of the feeding pipe (3) is fixedly provided with a feeding valve (4), the bottom surface of the storage tank (1) is fixedly provided with a discharge pipe (5), and the bottom end of the discharge pipe (5) is fixedly provided with a discharge valve (6).

3. A nitrogen pressure regulating apparatus for PDCPD article production according to claim 2, characterized in that: The top of the left side wall of the storage tank (1) is fixedly provided with an air inlet pipe (7), and the left end of the air inlet pipe (7) is fixedly provided with an air inlet valve (23), the top surface of the storage tank (1) is further fixedly provided with a detection port (9), and the top end of the detection port (9) is fixedly provided with an air pressure sensor (10).

4. A nitrogen pressure regulating apparatus for PDCPD article production according to claim 3, characterized in that: The bottom of the right side wall of the storage tank (1) is fixedly provided with an exhaust pipe (11), and the right end of the exhaust pipe (11) is fixedly provided with an exhaust valve (12), the output end of the exhaust valve (12) is fixedly provided with a detection pipe (13), and the outer wall of the detection pipe (13) is fixedly provided with a nitrogen detector (14) at the top.

5. A nitrogen pressure regulating apparatus for PDCPD article production as defined in claim 4, wherein: The bottom surface of the nitrogen storage tank (15) is fixedly provided with a nitrogen discharge pipe (18), and the bottom end of the nitrogen discharge pipe (18) is fixedly provided with a nitrogen supply valve (19), the output end of the nitrogen supply valve (19) and the input end of the pressure reducing valve (20) are fixedly provided with a first conveying pipe (21), and the output end of the pressure reducing valve (20) and the input end of the air inlet valve (23) are fixedly provided with a second conveying pipe (22).

6. A nitrogen pressure regulating apparatus for PDCPD article production according to claim 5, characterized in that: The top surface of the nitrogen storage tank (15) is fixedly provided with a nitrogen return pipe (16), and the top end of the nitrogen return pipe (16) is fixedly provided with a one-way valve (17), the top of the right side wall of the storage tank (1) is fixedly provided with a pressure relief pipe (8), and the right end of the pressure relief pipe (8) is fixedly provided with a pressure relief valve (24), the output end of the pressure relief valve (24) and the input end of the one-way valve (17) are fixedly provided with a third conveying pipe (25).

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