Modular nitrogen generator with monitoring function

Abstract

The utility model relates to a modularization nitrogen generator with monitoring function, including air inlet pipe, air outlet pipe, dew point appearance, oxygen sensor, pressure sensor, nitrogen making machine air inlet pipe and nitrogen making machine air outlet pipe, dew point appearance sets up on air inlet pipe, air inlet pipe is connected with nitrogen making machine air inlet pipe, is equipped with air inlet control valve on nitrogen making machine air inlet pipe, and one end of nitrogen making machine air outlet pipe is connected with nitrogen making machine air outlet interface, the other end of nitrogen making machine air outlet pipe is connected with air outlet pipe, is equipped with oxygen sensor, check valve and pressure sensor in proper order on air outlet pipe. The modularization nitrogen generator with monitoring function of the utility model can make the input nitrogen reach the set dew point value, can make the dew point value of input nitrogen reach -40 DEG C, greatly reduce the water content of nitrogen. When nitrogen is output, the oxygen content in nitrogen is monitored through the oxygen sensor, can make the purity control precision of output nitrogen reach 0.0003%, ensure stable output 99.999% high -purity nitrogen.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen preparation devices, and in particular to a modular nitrogen generator with monitoring function. Background Technology

[0002] A nitrogen generator is a device that separates nitrogen from the air through physical or chemical methods, or generates nitrogen through a chemical reaction. It can continuously provide high-purity nitrogen and is widely used in laboratories, industry, medical fields, and food preservation. In existing technologies, nitrogen generators require air purification and drying before storage in a storage tank. The air is then separated by a nitrogen-generating device to produce nitrogen. During the nitrogen generation process, a purity control unit monitors the purity of the generated nitrogen, and during nitrogen output, the pressure and flow rate are monitored. A drawback of existing nitrogen generators is that they cannot effectively monitor the oxygen and moisture content of the nitrogen during production, affecting the quality of the generated nitrogen. Utility Model Content

[0003] The purpose of this invention is to solve the problem that existing nitrogen generators cannot effectively monitor the oxygen and water content of nitrogen during the nitrogen production process, which affects the quality of the produced nitrogen. This invention provides a modular nitrogen generator with monitoring function.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A modular nitrogen generator with monitoring function includes an inlet pipe, an outlet pipe, a dew point meter, an oxygen sensor, a pressure sensor, a nitrogen generator inlet pipe, and a nitrogen generator outlet pipe. The dew point meter is installed on the inlet pipe, which is connected to the nitrogen generator inlet pipe. An inlet control valve is installed on the nitrogen generator inlet pipe. One end of the nitrogen generator outlet pipe is connected to the nitrogen generator outlet interface, and the other end is connected to the outlet pipe. An oxygen sensor, a one-way valve, and a pressure sensor are sequentially installed on the outlet pipe.

[0006] In the above scheme, a vent valve is provided on the outlet pipe, and the vent valve is located between the oxygen sensor and the one-way valve. By setting the vent valve on the outlet pipe and positioning it between the oxygen sensor and the one-way valve, when the oxygen sensor detects that the oxygen content in the output nitrogen exceeds a set threshold, it controls the vent valve to open, allowing the nitrogen to be directly discharged. The vent valve closes when the oxygen content in the nitrogen falls below the set threshold, allowing the nitrogen to be delivered from the outlet pipe to the nitrogen storage tank.

[0007] In the above scheme, the nitrogen generator has two air inlet pipes, each equipped with an air inlet control valve. One end of each air inlet pipe is connected to the nitrogen generator's air inlet interface, and the other ends are connected via a connecting pipe. An exhaust control valve is located on each air inlet pipe near the connecting pipe, and a silencer is installed on the connecting pipe. This configuration allows the gas discharged from the nitrogen generator to be released through the exhaust valves and silencers, while the silencers also eliminate noise.

[0008] In the above scheme, the oxygen sensor is an ion flow oxygen sensor. This configuration allows for real-time monitoring of nitrogen purity, improving the accuracy of nitrogen purity control.

[0009] This invention offers several advantages: The modular nitrogen generator with monitoring capabilities incorporates a dew point meter on the inlet pipe. This meter monitors the dew point of the air entering the system, ensuring the input air reaches a set dew point value of -40°C, significantly reducing the air's moisture content. The input air enters the nitrogen generator, where it is separated to produce nitrogen gas. This nitrogen gas is then output through the generator's outlet pipe. Before entering the outlet pipe, an oxygen sensor detects the oxygen content in the nitrogen. Only when the oxygen content is below a set threshold can the nitrogen be output to the nitrogen storage tank. This design ensures that the purity of the output nitrogen is controlled with an accuracy of ±0.0003%, guaranteeing a stable output of 99.999% high-purity nitrogen. By installing a pressure sensor on the outlet pipe, the pressure of the output nitrogen can be precisely controlled, enabling intelligent start-up and shutdown of the nitrogen generator. When the nitrogen tank pressure is ≥0.6MPa, it automatically goes into standby mode, and when the nitrogen tank pressure is ≤0.4MPa, the nitrogen generator restarts. This intelligent start-up and shutdown control can reduce energy consumption and extend the service life of the air compressor that produces nitrogen. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the modular nitrogen generator with monitoring function of this utility model.

[0011] The attached diagram is labeled as follows: 1. Inlet pipe; 2. Outlet pipe; 3. Dew point meter; 4. Oxygen sensor; 5. Pressure sensor; 6. Nitrogen generator inlet pipe; 7. Nitrogen generator outlet pipe; 8. Inlet control valve; 9. Connecting pipe; 10. Exhaust control valve; 11. Vent valve; 12. Check valve; 13. Silencer; 14. Nitrogen generator inlet port; 15. Nitrogen generator outlet port. Detailed Implementation

[0012] The technical solution of this utility model will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0013] like Figure 1 As shown, the modular nitrogen generator with monitoring function of this utility model includes an inlet pipe 1, an outlet pipe 2, a dew point meter 3, an oxygen sensor 4, a pressure sensor 5, a nitrogen generator inlet pipe 6, and a nitrogen generator outlet pipe 7.

[0014] The air inlet pipe 1 is used to connect to the air supply assembly, which typically includes components such as an air compressor, an air dryer, and an air filter. The air supply assembly filters the air to remove dust particles and other impurities, and the dryer removes moisture from the air. However, when a nitrogen generator produces nitrogen, it is necessary to strictly control the moisture content of the incoming air. Therefore, by installing a dew point meter on the air inlet pipe, the moisture content of the incoming air can be detected. For example, the air can only be delivered to the nitrogen generator when the dew point value of the input air reaches -40°C. This setting ensures that the input air reaches the set dew point value, greatly reducing the moisture content of the air.

[0015] The specific structure and working principle of the nitrogen generator are existing technologies and will not be elaborated here.

[0016] The air inlet pipe 1 is connected to the nitrogen generator's air inlet pipe 6, and an air inlet control valve 8 is installed on the nitrogen generator's air inlet pipe 6. The air inlet control valve 8 controls the input of air to the nitrogen generator.

[0017] Preferably, the nitrogen generator has two intake pipes 6, each equipped with an intake control valve 8. One end of each intake pipe 6 is connected to the nitrogen generator intake interface 14, and the other ends are connected via a connecting pipe 9. An exhaust control valve 10 is located on each intake pipe 6 near the connecting pipe 9, and a silencer 13 is installed on the connecting pipe 9. This configuration allows the exhaust gas from the nitrogen generator to be released, and the silencer 13 eliminates noise.

[0018] One end of the nitrogen generator outlet pipe 7 is connected to the nitrogen generator outlet port 15, and the other end of the nitrogen generator outlet pipe 7 is connected to the outlet pipe 2. An oxygen sensor 4, a one-way valve 12 and a pressure sensor 5 are sequentially installed on the outlet pipe 2.

[0019] A vent valve 11 is installed on the outlet pipe 2, and the vent valve 11 is located between the oxygen sensor 4 and the one-way valve 12. By installing the vent valve 11 on the outlet pipe 2 and positioning it between the oxygen sensor 4 and the one-way valve 12, when the oxygen sensor 4 detects that the oxygen content in the output nitrogen exceeds a set threshold, it controls the vent valve 11 to open, allowing the nitrogen to be directly discharged. The vent valve 11 is closed when the oxygen content in the nitrogen falls below the set threshold, allowing the nitrogen to be transported from the outlet pipe 2 to the nitrogen storage tank.

[0020] The oxygen sensor 4 is preferably an ion flow oxygen sensor. This configuration enables real-time monitoring of nitrogen purity and improves the accuracy of nitrogen purity control.

[0021] This utility model discloses a modular nitrogen generator with monitoring function. By installing a dew point meter on the inlet pipe, it monitors the dew point of the air entering the pipe, ensuring the input air reaches a set dew point value of -40°C, significantly reducing the air's moisture content. The input air enters the nitrogen generator, where it is processed to separate nitrogen gas, which is then output from the generator's outlet. The output nitrogen gas is then inspected by an oxygen sensor to detect its oxygen content. Only when the oxygen content is below a set threshold can the nitrogen be delivered to the nitrogen storage tank through the outlet pipe. This design allows for precise control of the output nitrogen purity to ±0.0003%, ensuring a stable output of 99.999% high-purity nitrogen. By installing a pressure sensor on the outlet pipe, the pressure of the output nitrogen can be precisely controlled, enabling intelligent start-up and shutdown of the nitrogen generator. When the nitrogen tank pressure is ≥0.6MPa, it automatically goes into standby mode, and when the nitrogen tank pressure is ≤0.4MPa, the nitrogen generator restarts. This intelligent start-up and shutdown control can reduce energy consumption and extend the service life of the air compressor that produces nitrogen.

[0022] This utility model's modular nitrogen generator with monitoring function has a wide range of applications. For example, it can be used in the food industry, increasing the compliance rate of nitrogen-filled packaging gas to 99.8%; it can be used in electronic manufacturing, meeting the requirements of semiconductor-grade nitrogen (ISO 8573-1 Class 1); it can be used in the pharmaceutical industry, complying with GMP data traceability requirements; and it can be used in the scientific research field, supporting high-precision experimental environment control.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular nitrogen gas generator with belt monitoring function, characterized by, It includes an inlet pipe, an outlet pipe, a dew point meter, an oxygen sensor, a pressure sensor, a nitrogen generator inlet pipe, and a nitrogen generator outlet pipe. The dew point meter is installed on the inlet pipe, which is connected to the nitrogen generator inlet pipe. An inlet control valve is installed on the nitrogen generator inlet pipe. One end of the nitrogen generator outlet pipe is connected to the nitrogen generator outlet port, and the other end is connected to the outlet pipe. An oxygen sensor, a one-way valve, and a pressure sensor are installed sequentially on the outlet pipe.

2. The modular nitrogen gas generator with monitoring function according to claim 1, characterized in that: The vent pipe is equipped with a vent valve, which is located between the oxygen sensor and the one-way valve.

3. The modular nitrogen gas generator with monitoring function according to claim 1, characterized in that: The nitrogen generator has two air inlet pipes, each equipped with an air inlet control valve. One end of each air inlet pipe is connected to the nitrogen generator air inlet interface, and the other ends are connected via a connecting pipe. An exhaust control valve is located on each air inlet pipe near the connecting pipe, and a silencer is located on the connecting pipe.

4. The modular nitrogen generator with monitoring function according to claim 1, characterized in that: The oxygen sensor is an ion flow oxygen sensor.

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