Self-water-supply gas constant humidity device

Abstract

The invention discloses a self-water-supply gas constant humidity device. The device comprises an electric control valve, a water inlet electric control valve, a water outlet electric control valve, a liquid level sensor, a humidity transmitter, a gas production electromagnetic valve, an emptying electromagnetic valve and a control system, and the control system is electrically connected with the electric control valve, the water inlet electric control valve, the water outlet electric control valve, the liquid level sensor, the humidity transmitter, the gas production electromagnetic valve and the emptying electromagnetic valve. The device is used for realizing automatic adjustment and control of gas humidity. The device can automatically complete operations such as water adding, water discharging and gas flow adjusting, and manual intervention is greatly reduced; through linkage of the liquid level sensor, the humidity transmitter and the control system, the gas humidity can be stably adjusted within the range of 30% RH-90% RH, and strict environmental requirements are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas humidity control, in particular to a self-watering gas constant humidity device. BACKGROUND

[0002] In a low-oxygen environment, nitrogen is usually used as a protective gas. However, nitrogen is filtered and dehydrated during preparation, and its humidity is usually less than 30% RH, which cannot meet the requirements of some environments with strict humidity requirements. The existing humidification device usually uses manual adjustment or simple mechanical control, which has the problems of large humidity fluctuation, low adjustment accuracy, complex operation, etc. In addition, the traditional device lacks automatic monitoring and feedback function, and it is difficult to realize stable control of humidity.

[0003] Therefore, there is an urgent need for a self-watering gas constant humidity device that can automatically adjust and accurately control humidity to meet the needs of special environments. SUMMARY

[0004] The self-watering gas constant humidity device provided in the embodiments of the present application solves the problems of inability to automatically adjust, low adjustment accuracy, and complex operation in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides a self-watering gas constant humidity device, wherein the method comprises: an electric regulating valve arranged at the gas inlet of the humidification chamber for adjusting the flow rate of the gas entering the humidification chamber; a water inlet electric control valve arranged at the water inlet of the humidification chamber for controlling the automatic replenishment of the humidification liquid; a water outlet electric control valve arranged at the water outlet of the humidification chamber for controlling the automatic discharge of the humidification liquid; a liquid level sensor arranged on the humidification chamber for real-time detection of the liquid level of the humidification liquid; a humidity transmitter located at the gas outlet of the humidification chamber for real-time detection of the gas humidity; a gas producing electromagnetic valve located at the gas outlet of the humidification chamber for delivering the gas to the gas using system when the gas humidity is qualified; an emptying electromagnetic valve located at the gas outlet of the humidification chamber for discharging the gas when the gas humidity is unqualified; and a control system electrically connected with the electric regulating valve, the water inlet electric control valve, the water outlet electric control valve, the liquid level sensor, the humidity transmitter, the gas producing electromagnetic valve, and the emptying electromagnetic valve for realizing automatic adjustment and control of the gas humidity.

[0006] Optionally, it further comprises a gas dispersion device located inside the humidification chamber and arranged at the gas inlet of the humidification chamber for reducing the flow rate of the gas entering the humidification chamber and increasing the gas-liquid contact area.

[0007] Optionally, a plurality of gas dispersion holes are arranged on the gas dispersion device, and all the gas dispersion holes are honeycomb hole structures.

[0008] Optionally, the water inlet electric control valve and the water outlet electric control valve are solenoid valves; the control system automatically controls the opening and closing of the water inlet electric control valve according to the signal transmitted by the liquid level sensor.

[0009] Optionally, the control system is electrically connected with the humidity transmitter, and is used for adjusting the opening degree of the electric regulating valve according to the deviation of the humidity value fed back by the humidity transmitter from the set target humidity.

[0010] Optionally, the gas production solenoid valve and the emptying solenoid valve are interlocked and controlled, the emptying solenoid valve is closed when the gas production solenoid valve is opened, and the gas production solenoid valve is closed when the emptying solenoid valve is opened.

[0011] Optionally, the control system comprises a man-machine interactive interface, which is used for inputting the target humidity value.

[0012] The beneficial effects of the present application are as follows:

[0013] The present application provides a self-watering gas constant humidity device, the user only needs to input the target humidity, and the device can automatically complete the water adding, water draining, gas flow adjusting and other operations, greatly reducing the manual intervention; through the linkage of the liquid level sensor, the humidity transmitter and the control system, the gas humidity can be stably adjusted in the range of 30%RH~90%RH, and the strict environmental requirements can be met; the honeycomb hole type gas diffusion device effectively reduces the gas flow rate, increases the contact area of the gas and the liquid, and improves the humidification efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic diagram of a self-watering gas constant humidity device provided by an embodiment of the present application.

[0015] Symbol explanation:

[0016] Electric regulating valve-1, water inlet electric control valve-2, water outlet electric control valve-3, liquid level sensor-4, humidity transmitter-5, gas production solenoid valve-6, emptying solenoid valve-7, control system-8, gas diffusion device-9, humidification cavity-10. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Figure 1 is a structural schematic diagram of a self-watering gas constant humidity device provided by an embodiment of the present application. Figure 1 As shown in the figure, the device comprises:

[0019] 1. An electric regulating valve 1 is arranged at the air inlet of the humidification chamber 10, which is used to regulate the air flow entering the humidification chamber 10.

[0020] The humidification chamber 10 is the core area of the whole humidity adjustment process, which is used to contain a certain amount of humidification liquid (usually pure water or deionized water) and realize the sufficient contact and humidification of the entering air and liquid. The outer shell of the humidification chamber 10 is made of stainless steel 304 or 316L, and the inner surface is polished to reduce scale and impurity deposition and facilitate cleaning. The humidification chamber 10 is provided with an air inlet at the bottom of one side, a water inlet at the top, a water outlet at the bottom of the other side, and an air outlet at the top. The volume of the humidification chamber 10 can be designed to be 5-50 L according to the air demand, and the preferred volume is 20 L.

[0021] The electric regulating valve 1 is arranged at the air inlet of the humidification chamber 10 and connected with the external air source pipeline. The electric regulating valve 1 can realize the valve opening degree adjustment of 0-100% of the air, and realize the control of the air flow. By adjusting the valve core position, the air flow entering the humidification chamber 10 is controlled, so as to affect the contact time and contact efficiency of the air and the humidification liquid in the humidification chamber 10, and realize the adjustment of the outlet air humidity. The electric regulating valve 1 can be selected from an electric proportional ball valve or an electric butterfly valve, and the valve body is preferably made of stainless steel to resist the long-term erosion of low-oxygen nitrogen or other inert gases.

[0022] 2. An electric water inlet control valve 2 is arranged at the water inlet of the humidification chamber 10, which is used to control the automatic replenishment of the humidification liquid.

[0023] The electric water inlet control valve 2 is arranged at the water inlet of the humidification chamber 10 and connected with the water inlet pipeline. The valve is preferably an electromagnetic valve structure. When the humidification liquid level in the humidification chamber 10 is lower than the preset lower limit, the control system 8 sends a signal to open the electric water inlet control valve 2, so that the humidification liquid is automatically replenished into the humidification chamber 10; when the liquid level reaches the preset upper limit, the valve is closed to prevent the humidification liquid from overflowing.

[0024] 3. An electric water outlet control valve 3 is arranged at the water outlet of the humidification chamber 10, which is used to control the automatic discharge of the humidification liquid.

[0025] The electric water outlet control valve 3 is arranged at the water outlet of the humidification chamber 10 and connected with the water outlet pipeline. The valve is preferably an electromagnetic valve structure, which is used to automatically discharge the humidification liquid in the humidification chamber 10 when it is necessary to replace the humidification liquid or maintain the equipment. During the drainage process, the electric regulating valve 1 is closed by the control system 8 to prevent the air from continuing to enter the humidification chamber 10, so as to ensure the safety and thoroughness of the drainage process.

[0026] 4. A liquid level sensor 4 is arranged on the humidification chamber 10, which is used to detect the liquid level of the humidification liquid in real time.

[0027] The liquid level sensor 4 is arranged at the upper part of the humidification chamber 10, and is used to detect the liquid level of the humidification liquid in real time. The liquid level sensor 4 can be a float ball type, static pressure type or capacitance type sensor, and can output an electrical signal corresponding to the liquid level to the control system 8, so as to realize closed-loop control of the water inlet electric control valve 2. In order to ensure stable operation, the liquid level sensor 4 can be provided with high and low liquid level double thresholds, and when the liquid level reaches the upper limit, the water supply is stopped, and when the liquid level drops to the lower limit, the water supply is started, that is, the control system 8 sends a command to the water inlet electric control valve 2 to complete the water supply operation.

[0028] 5. A humidity transmitter 5 is arranged at the gas outlet of the humidification chamber 10, and is used to detect the gas humidity in real time.

[0029] The humidity transmitter 5 is arranged at the gas outlet of the humidification chamber 10, and is used to detect the gas humidity after humidification in real time. The humidity transmitter 5 feeds back the humidity signal to the control system 8, and the control system 8 compares the humidity signal with the preset target humidity value, so as to adjust the opening degree of the electric regulating valve 1, so as to ensure that the output gas humidity is within the set range.

[0030] 6. A gas production electromagnetic valve 6 is arranged at the gas outlet of the humidification chamber 10, and is used to deliver the gas to the gas using system when the gas humidity is qualified.

[0031] The gas production electromagnetic valve 6 is arranged at the gas outlet of the humidification chamber 10. When the humidity transmitter 5 detects that the gas humidity is qualified, the valve is opened to deliver the qualified gas to the gas using system or the gas storage device; when the humidity is unqualified, the valve is closed to prevent unqualified gas from entering the gas using system.

[0032] 7. An emptying electromagnetic valve 7 is arranged at the gas outlet of the humidification chamber 10, and is used to discharge the gas when the gas humidity is unqualified.

[0033] The emptying electromagnetic valve 7 is arranged at the gas outlet of the humidification chamber 10. When the humidity transmitter 5 detects that the gas humidity is unqualified, the control system 8 will close the gas production electromagnetic valve 6 and open the emptying electromagnetic valve 7, so as to discharge the unqualified gas to a safe area or a recycling device, thereby preventing the unqualified gas from affecting the downstream equipment or process.

[0034] In an optional embodiment, the gas production electromagnetic valve 6 and the emptying electromagnetic valve 7 are interlocked, that is, when the gas production electromagnetic valve 6 is opened, the emptying electromagnetic valve 7 is closed, and when the emptying electromagnetic valve 7 is opened, the gas production electromagnetic valve 6 is closed.

[0035] 8. A control system 8 is electrically connected with the electric regulating valve 1, the water inlet electric control valve 2, the water outlet electric control valve 3, the liquid level sensor 4, the humidity transmitter 5, the gas production electromagnetic valve 6 and the emptying electromagnetic valve 7, and is used to realize automatic adjustment and control of the gas humidity.

[0036] The control system 8 is electrically connected with the electric regulating valve 1, the water inlet electric control valve 2, the water outlet electric control valve 3, the liquid level sensor 4, the humidity transmitter 5, the gas production electromagnetic valve 6 and the emptying electromagnetic valve 7. The system can be a PLC controller, and has the functions of data acquisition, logical judgment, closed-loop control, valve driving and the like. According to the real-time humidity value fed back by the humidity transmitter 5 and the liquid level information fed back by the liquid level sensor 4, the control system 8 can automatically adjust the opening degree of the electric regulating valve 1 and the opening and closing of the water inlet electric control valve 2, control the gas flow and the water inlet process, and realize the interlocking switching of the gas production and emptying valves, so as to ensure that the gas humidity is stably in the preset range.

[0037] In an optional embodiment, the self-watering gas constant humidity device further comprises a gas diffusion device 9 located inside the humidification cavity 10 and arranged at the gas inlet of the humidification cavity 10, for reducing the flow rate of the gas entering the humidification cavity 10 and increasing the gas-liquid contact area.

[0038] The gas diffusion device 9 is provided with a plurality of gas diffusion holes, and all the gas diffusion holes are in a honeycomb hole structure.

[0039] Specifically, the surface of the gas diffusion device 9 is uniformly distributed with a plurality of gas diffusion holes, all the gas diffusion holes are in a honeycomb hole structure, the honeycomb holes are arranged closely and penetrate along the gas flow direction; the gas diffusion device 9 divides the high-speed concentrated gas flow sent by the external gas supply system into a plurality of low-speed uniform small gas flows through the plurality of gas diffusion holes, so as to significantly reduce the gas flow rate, reduce the impact of the gas flow on the humidification liquid surface, increase the gas-liquid contact area, and improve the gas humidification efficiency.

[0040] In an optional embodiment, the control system 8 comprises a human-computer interaction interface for inputting a target humidity value.

[0041] Specifically, the operator can input the required target humidity value through the human-computer interaction interface, and the input mode can be numerical key input or sliding adjustment. The input target humidity value is transmitted to the processing unit of the control system 8 through the human-computer interaction interface, the processing unit compares the target value with the humidity value collected by the humidity transmitter 5 in real time, generates a humidity deviation signal, and adjusts the opening degree of the electric regulating valve 1, controls the switching of the gas production electromagnetic valve 6 and the emptying electromagnetic valve 7 through executing a corresponding control algorithm, so as to stabilize the outlet gas humidity in the set value range.

[0042] The beneficial effects of the present application are as follows:

[0043] The application provides a self-watering gas constant-humidity device, which can automatically complete water adding, water draining, gas flow adjusting and the like operations only by inputting a target humidity, greatly reducing manual intervention; through linkage of the liquid level sensor 4, the humidity transmitter 5 and the control system 8, the gas humidity can be stably adjusted in the range of 30%RH-90%RH, meeting strict environmental requirements; the honeycomb hole-shaped gas diffusion device 9 effectively reduces the gas flow rate, increases the contact area of the gas and the liquid, and improves the humidifying efficiency.

[0044] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A self-supplied water gas constant humidity device, characterized in that: include: An electric regulating valve is provided at the air inlet of the humidifying chamber and is used to regulate the flow of gas entering the humidifying chamber; The water inlet electric control valve is set at the water inlet of the humidification chamber and is used to control the automatic replenishment of the humidification liquid; The water outlet electric control valve is set at the water outlet of the humidification chamber and is used to control the automatic discharge of the humidification liquid; A liquid level sensor is provided on the humidifying chamber and is used to detect the liquid level of the humidifying liquid in real time; The humidity transmitter is located at the air outlet of the humidification chamber and is used to detect the gas humidity in real time; The gas production solenoid valve is located at the gas outlet of the humidification chamber and is used to transport the gas to the gas use system when the gas humidity is qualified; The exhaust solenoid valve is located at the gas outlet of the humidification chamber and is used to discharge the gas when the gas humidity is unqualified; The control system is electrically connected to the electric regulating valve, the water inlet electric control valve, the water outlet electric control valve, the liquid level sensor, the humidity transmitter, the gas production solenoid valve, and the emptying solenoid valve, and is used to realize automatic adjustment and control of gas humidity.

2. The device according to claim 1, characterized in that Also includes: The gas dispersion device is located inside the humidification chamber and is arranged at the air inlet of the humidification chamber, and is used to reduce the flow rate of the gas entering the humidification chamber and increase the gas-liquid contact area.

3. The device according to claim 2, characterized in that: The gas diffusion device is provided with a plurality of gas diffusion holes, and all of the gas diffusion holes are honeycomb hole structures.

4. The device according to claim 1, characterized in that: The water inlet electric control valve and the water outlet electric control valve are solenoid valves; the control system automatically controls the opening and closing of the water inlet electric control valve according to the signal transmitted by the liquid level sensor.

5. The device according to claim 1, characterized in that: The control system is electrically connected to the humidity transmitter and is used to adjust the opening of the electric regulating valve according to the deviation between the humidity value fed back by the humidity transmitter and the set target humidity.

6. The device according to claim 1, characterized in that: The gas production solenoid valve and the exhaust solenoid valve are interlocked and controlled. When the gas production solenoid valve is opened, the exhaust solenoid valve is closed. When the exhaust solenoid valve is opened, the gas production solenoid valve is closed.

7. The device according to claim 5, characterized in that: The control system includes a human-computer interaction interface for inputting a target humidity value.

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