Double-channel nitrogen making machine

Abstract

The utility model discloses a double-channel nitrogen making machine which comprises a machine frame, a supporting frame is fixedly installed at the inner bottom of the machine frame, a nitrogen tank, a separation tank A and a separation tank B are fixedly installed on the supporting frame, and a first freezing dryer, a second freezing dryer, a first filter and a five-way valve are fixedly installed in the machine frame. An air outlet of the first refrigeration dryer is communicated with an air inlet of the first filter, an air outlet of the first filter is communicated with an air inlet of the second refrigeration dryer, an air outlet of the first filter is communicated with an air inlet of the five-way valve, and one air outlet of the five-way valve is communicated with the interior of the lower end of the separation tank A; the other gas outlet of the five-way valve is communicated with the interior of the lower end of the separation tank B; through the arrangement of the first freezing dryer and the second freezing dryer, the efficiency and the capacity of air dry cooling treatment are remarkably improved, it is ensured that efficient dry cooling treatment can be rapidly carried out on a large amount of air within unit time, and the requirement for high-flow nitrogen production is met.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen production, in particular to a dual-channel nitrogen generator. Background Art

[0002] A nitrogen generator is a device that uses air as raw material and uses physical methods to separate oxygen and nitrogen in it to obtain nitrogen. Generally, cryogenic air separation, molecular sieve air separation and membrane air separation are used to produce nitrogen.

[0003] Currently, most nitrogen generators on the market that use cryogenic air separation are large in size and cannot use nitrogen gas during production. This is because other gases, primarily oxygen and water vapor, must be excluded during nitrogen production. These generators typically only have a single gas cylinder, so they cannot simultaneously produce and use nitrogen gas (for example, in welding environments). Furthermore, they typically only have a single dry cooler, which has limited efficiency and cannot quickly and efficiently dry-cool large volumes of air per unit time, resulting in a low nitrogen flow rate for the entire generator.

[0004] Therefore, a dual-channel nitrogen generator is proposed. Utility Model Content

[0005] The purpose of the present invention is to provide a dual-channel nitrogen generator, thereby solving or at least alleviating one or more of the above-mentioned problems and other problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0007] A dual-channel nitrogen generator comprises a frame, a support frame is fixedly installed on the inner bottom of the frame, a nitrogen tank, a separation tank A and a separation tank B are fixedly installed on the support frame, a first cold dryer, a second cold dryer, a first filter and a five-way valve are fixedly installed inside the frame, the air inlet of the first cold dryer is connected to the air outlet of the air compressor through an oil-water separator, the air outlet of the first cold dryer is connected to the air inlet of the first filter, the air outlet of the first filter is connected to the air inlet of the second cold dryer, the air outlet of the first filter is connected to the air inlet of the five-way valve, and one of the air outlets of the five-way valve is connected to the The interior of the lower end of the separation tank A is connected, and another air outlet of the five-way valve is connected to the interior of the lower end of the separation tank B. The upper end of the separation tank A is respectively connected to the first connecting pipe and the second connecting pipe, and the upper end of the separation tank B is respectively connected to the third connecting pipe and the fourth connecting pipe. The nitrogen tank is respectively connected to the first delivery pipe and the second delivery pipe. The first connecting pipe and the third connecting pipe are both connected to the first delivery pipe, and the second connecting pipe and the fourth connecting pipe are both connected to the second delivery pipe. A one-way valve is provided on the first connecting pipe, the second connecting pipe, the third connecting pipe and the fourth connecting pipe.

[0008] In the dual-channel nitrogen generator according to the present invention, solenoid valves are installed on both the first delivery pipe and the second delivery pipe.

[0009] In the dual-channel nitrogen generator according to the present invention, it also includes a second filter, the air outlet of the second cold dryer is connected to the air inlet of the second filter, and the air outlet of the second filter pair is connected to the air inlet of the five-way valve.

[0010] In the dual-channel nitrogen generator according to the present invention, exhaust valves are installed at the bottom of the separation tank A and the bottom of the separation tank B, and silencers are installed at the gas outlets of the exhaust valves.

[0011] In the dual-channel nitrogen generator according to the present invention, a pressure relief valve is installed at the bottom of the nitrogen tank.

[0012] In the dual-channel nitrogen generator according to the utility model, a temperature and humidity alarm is installed at the air inlet of the five-way valve.

[0013] In the dual-channel nitrogen generator according to the present invention, the gas outlet of the nitrogen tank is connected to a third filter, and the gas outlet of the third filter is connected to a pressure flow meter.

[0014] In the dual-channel nitrogen generator according to the present invention, rollers are installed at the four bottom corners of the frame.

[0015] The utility model has at least the following beneficial effects:

[0016] The utility model significantly improves the efficiency and capacity of air dry cooling treatment by setting the first cold dryer and the second cold dryer, which ensures that a large amount of air can be quickly and efficiently dry cooled in a unit of time. In combination with the five-way valve and separation tanks A and B, a dual-channel nitrogen production operation is realized, meeting the demand for high-flow nitrogen production.

[0017] Nitrogen can be produced and used at the same time, with low cost and high nitrogen purity, and the overall volume is small and easy to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the dual-channel nitrogen generator of the utility model;

[0020] Figure 2 This is one of the partial structural diagrams of the dual-channel nitrogen generator of the utility model;

[0021] Figure 3 This is the second partial structural diagram of the dual-channel nitrogen generator of the present invention;

[0022] Figure 4 This is the third partial structural diagram of the dual-channel nitrogen generator of the utility model;

[0023] Figure 5 This is a schematic diagram of the gas circuit connection structure of the dual-channel nitrogen generator of the present invention.

[0024] Description of Figure Numbers:

[0025] 1. Rack; 2. Oil-water separator; 3. First cold dryer; 4. Second cold dryer; 5. First filter; 6. Five-way valve; 7. Second filter; 8. Nitrogen tank; 9. Separation tank A; 901. First connecting pipe; 902. Second connecting pipe; 1001. Third connecting pipe; 1002. Fourth connecting pipe; 10. Separation tank B; 11. Third filter; 12. Pressure flowmeter; 13. One-way valve; 14. First delivery pipe; 15. Second delivery pipe; 16. Solenoid valve. DETAILED DESCRIPTION

[0026] The following will describe the implementation methods of the present application in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] Please refer to Figures 1 to 5 As shown, the present embodiment provides a dual-channel nitrogen generator, including a frame 1, a support frame 101 is fixedly installed on the inner bottom of the frame 1, a nitrogen tank 8, a separation tank A9 and a separation tank B10 are fixedly installed on the support frame 101, the bottom of the separation tank A9 and the bottom of the separation tank B10 are both equipped with exhaust valves, and a muffler is installed at the air outlet of the exhaust valve. The first cold dryer 3, the second cold dryer 4, the first filter 5 and the five-way valve 6 are fixedly installed inside the frame 1, the air inlet of the first cold dryer 3 is connected to the air outlet of the air compressor through the oil-water separator 2, the air outlet of the first cold dryer 3 is connected to the air inlet of the first filter 5, the air outlet of the first filter 5 is connected to the air inlet of the second cold dryer 4, the air outlet of the first filter 5 is connected to the air inlet of the five-way valve 6, and one of the air outlets of the five-way valve 6 It is connected to the interior of the lower end of the separation tank A9, and another air outlet of the five-way valve 6 is connected to the interior of the lower end of the separation tank B10. The upper end of the separation tank A9 is respectively connected to the first connecting pipe 901 and the second connecting pipe 902, and the upper end of the separation tank B10 is respectively connected to the third connecting pipe 1001 and the fourth connecting pipe 1002. The nitrogen tank 8 is respectively connected to the first delivery pipe 14 and the second delivery pipe 15, and the first delivery pipe 14 and the second delivery pipe 15 are both installed with an electromagnetic valve 16. The first connecting pipe 901 and the third connecting pipe 1001 are both connected to the first delivery pipe 14, and the second connecting pipe 902 and the fourth connecting pipe 1002 are both connected to the second delivery pipe 15. A one-way valve 13 is provided on the first connecting pipe 901, the second connecting pipe 902, the third connecting pipe 1001 and the fourth connecting pipe 1002.

[0028] By adopting the above technical solution, when in use, first control the five-way valve 6 to connect the air outlet of the second cold dryer 4 with the air inlet of the separation tank A9, start the air compressor, and the outside air is separated by the oil-water separator 2 and enters the first cold dryer 3 for the first freeze-drying, and then enters the second cold dryer 4 for the second freeze-drying after being filtered by the first filter 5. The dried air enters the separation tank A9 through the five-way valve 6. Under the action of high pressure, the uppermost gas inside the separation tank A9 is very pure nitrogen. After a period of time, control the five-way valve 6 to connect the air outlet of the second cold dryer 4 with the separation tank B10, open the solenoid valve 16, and at this time the air pressure inside the separation tank A9 is greater than the pressure inside the nitrogen tank 8, so that the pure high-pressure nitrogen at the upper end of the separation tank A9 enters the nitrogen tank 8. The air pressure inside tank B10 is lower than the air pressure inside nitrogen tank 8, so the gas inside separation tank B10 will not enter nitrogen tank 8. When the nitrogen in separation tank A9 is transported, the solenoid valve 16 is closed, and the exhaust valve at the lower end of separation tank A9 is opened to discharge the impurity gas at the lower end of separation tank A9. After the separation tank B10 is inflated for a period of time, the air pressure inside separation tank B10 is greater than the internal pressure of nitrogen tank 8. At this time, the solenoid valve 16 is opened, and the nitrogen inside separation tank B10 is transported to the inside of nitrogen tank 8. When the nitrogen in separation tank B10 is transported, the solenoid valve 16 is closed, and then the five-way valve 6 is controlled to connect the air outlet of the second cold dryer 4 with the inlet of separation tank A9. At the same time, the exhaust valve at the lower end of separation tank B10 is opened to discharge the impurity gas inside separation tank B10, and the cycle is repeated.

[0029] In this embodiment, when high-flow nitrogen production is required, the five-way valve 6 is controlled to connect the air outlet of the second cold dryer 4 to the air inlet of the separation tank A9 and the air inlet of the separation tank B10 at the same time, and nitrogen production is performed simultaneously using dual channels. After the separation tank A9 and the separation tank B10 are inflated for a period of time, the solenoid valve 16 is opened to allow the pure high-pressure nitrogen at the upper end of the separation tank A9 and the separation tank B10 to enter the interior of the nitrogen tank 8.

[0030] In this embodiment, a second filter 7 is also included. The air outlet of the second cold dryer 4 is connected to the air inlet of the second filter 7, and the air outlet of the second filter 7 is connected to the air inlet of the five-way valve 6. The second filter 7 can be set to perform secondary filtration on the gas, effectively reducing impurities in the air and improving air purity.

[0031] In this embodiment, a pressure relief valve is installed at the bottom of the nitrogen tank 8. Through the set pressure relief valve, when the pressure inside the nitrogen tank 8 is greater than the set pressure, the pressure relief valve will automatically open to provide pressure relief protection for the inside of the nitrogen tank 8, thereby ensuring the safe operation of the equipment.

[0032] In this embodiment, the gas outlet of the nitrogen tank 8 is connected to a third filter 11, and the gas outlet of the third filter 11 is connected to a pressure flowmeter 12. The output nitrogen can be filtered by the third filter 11, thereby effectively improving the purity of the nitrogen.

[0033] In this embodiment, rollers 102 are installed at the four corners of the bottom of the frame 1, and this arrangement facilitates the movement of the dual-channel nitrogen generator.

[0034] In this embodiment, a temperature and humidity alarm is installed at the air inlet of the five-way valve 6. When the temperature is detected to be higher than 50°C or the humidity is higher than 12%, an alarm will be issued to remind the user that there is a fault in the drying and cooling equipment.

[0035] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. Dual-channel nitrogen generator, characterized in that, The invention comprises a frame (1), wherein a support frame (101) is fixedly installed on the inner bottom of the frame (1), a nitrogen tank (8), a separation tank A (9) and a separation tank B (10) are fixedly installed on the support frame (101), a first cold dryer (3), a second cold dryer (4), a first filter (5) and a five-way valve (6) are fixedly installed inside the frame (1), an air inlet of the first cold dryer (3) is connected to an air outlet of an air compressor through an oil-water separator (2), an air outlet of the first cold dryer (3) is connected to an air inlet of the first filter (5), an air outlet of the first filter (5) is connected to an air inlet of the second cold dryer (4), an air outlet of the first filter (5) is connected to an air inlet of the five-way valve (6), one of the air outlets of the five-way valve (6) is connected to the lower end of the separation tank A (9), and the five-way valve The other gas outlet of (6) is connected to the interior of the lower end of the separation tank B (10), the upper end of the separation tank A (9) is respectively connected to the first connecting pipe (901) and the second connecting pipe (902), the upper end of the separation tank B (10) is respectively connected to the third connecting pipe (1001) and the fourth connecting pipe (1002), the nitrogen tank (8) is respectively connected to the first delivery pipe (14) and the second delivery pipe (15), the first connecting pipe (901) and the third connecting pipe (1001) are both connected to the first delivery pipe (14), the second connecting pipe (902) and the fourth connecting pipe (1002) are both connected to the second delivery pipe (15), and the first connecting pipe (901), the second connecting pipe (902), the third connecting pipe (1001) and the fourth connecting pipe (1002) are all provided with a one-way valve (13).

2. The dual-channel nitrogen generator according to claim 1, characterized in that: Solenoid valves (16) are installed on both the first delivery pipe (14) and the second delivery pipe (15).

3. The dual-channel nitrogen generator according to claim 2, characterized in that: It also includes a second filter (7), the air outlet of the second cold dryer (4) is connected to the air inlet of the second filter (7), and the air outlet of the second filter (7) is connected to the air inlet of the five-way valve (6).

4. The dual-channel nitrogen generator according to claim 3, characterized in that: The bottom of the separation tank A (9) and the bottom of the separation tank B (10) are both equipped with exhaust valves, and the gas outlets of the exhaust valves are equipped with silencers.

5. The dual-channel nitrogen generator according to claim 4, characterized in that: A pressure relief valve is installed at the bottom of the nitrogen tank (8).

6. The dual-channel nitrogen generator according to claim 1, characterized in that: A temperature and humidity alarm is installed at the air inlet of the five-way valve (6).

7. The dual-channel nitrogen generator according to claim 5, characterized in that: The gas outlet of the nitrogen tank (8) is connected to a third filter (11), and the gas outlet of the third filter (11) is connected to a pressure flow meter (12).

8. The dual-channel nitrogen generator according to any one of claims 1 to 7, characterized in that: Rollers (102) are installed at the four corners of the bottom of the frame (1).

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