CN218601724U

CN218601724U - Dynamic micro-flow gas humidity control device

Info

Publication number: CN218601724U
Application number: CN202223261104.7U
Authority: CN
Inventors: 张波
Original assignee: Sichuan Laifeng Fluid Equipment Manufacturing Co ltd
Current assignee: Sichuan Laifeng Fluid Equipment Manufacturing Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-03-10
Anticipated expiration: 2032-12-06

Abstract

The utility model discloses a developments micro-flow gas humidity control device, gas drying passageway, gas humidification passageway, gas mixer, the gas drying passageway with the end of gas humidification passageway all with the gas mixer is connected, be equipped with humidity transducer on the gas outlet pipe way of gas mixer, the gas humidification passageway is equipped with PID controller, solenoid valve and humidifier, the PID controller passes through the signal of humidity transducer feedback is controlled the switching frequency of solenoid valve, and then comes the control flow in the dry and wet gas proportion in the gas mixer. The utility model discloses to controllable, the dynamic adjustment humidity of gas humidity, satisfy people to the requirement of gas humidity.

Description

Dynamic micro-flow gas humidity control device

Technical Field

The utility model relates to a gaseous humidity control field especially relates to a gaseous humidity control device of developments miniflow.

Background

The gas application field is wide, most of applications have certain requirements on the humidity of the gas, and the gas is excessively dried, so that static electricity accumulation is caused, and the operation of mechanical and electronic equipment is influenced; too high humidity will cause corrosion to metal materials. So carry out accurate control with regard to the humidity to gas, present gas humidity control is mostly the gaseous ratio of manual control, and its accuracy is poor, and is intelligent, degree of automation is low, especially when the gas humidity of input is indefinite, needs carry out real-time fine adjustment to the gas humidity of output, and this is complicated and inefficiency to actual production application.

Therefore, a control device capable of controlling the humidity of the gas and dynamically adjusting the micro-flow is needed to meet the requirement of people on the humidity of the gas.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a humidity is controllable, can dynamic adjustment's gaseous controlling means of miniflow.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a developments micro-flow gas humidity control device, includes gas drying passageway, gas humidification passageway, gas mixer, the gas drying passageway with the end of gas humidification passageway all with the gas mixer is connected, be equipped with humidity transducer on the gas outlet pipe way of gas mixer, the gas humidification passageway is equipped with PID controller, solenoid valve and humidifier, the PID controller passes through the signal of humidity transducer feedback controls the switching frequency of solenoid valve, and then comes the control to flow in the dry and wet gas proportion in the gas mixer.

Through above-mentioned technical scheme, after the dry gas through the gas drying passageway and the moisture through the gas humidification passageway mixes according to certain proportion again in gas mixer, obtain the target gas of certain humidity, target gas flows out to the gas point from gas mixer, be equipped with humidity transducer on the pipeline between gas mixer and gas point, humidity that detects the target gas when humidity transducer is not up to standard, with signal feedback PID controller, PID controller control solenoid valve comes the gas mixture that gets into the humidification passageway in the switching frequency of short time, humidity is guaranteed through PID controller controlled heating to the humidifier simultaneously, and then the volume of moisture in the inflow gas mixer has been controlled.

Furthermore, the head ends of the gas drying channel and the gas humidifying channel are both connected with a gas inlet pipe of mixed gas, and the head ends of the gas inlet pipes are connected to a gas source of the mixed gas.

Through the technical scheme, the total flow of the mixed gas source is unchanged, the gas drying channel and the gas humidifying channel are used as two branches of the gas inlet pipe of the mixed gas, when the frequency of the electromagnetic valve for controlling the opening and closing of the switch through the PID controller is changed, the amount of the mixed gas entering the gas humidifying channel and the gas drying channel is different, and therefore the electromagnetic valve can be controlled through the PID controller to further control the proportion of the dry gas and the moisture finally flowing into the gas mixer.

Further, the electromagnetic valve is located at the front end of the humidifier, a first one-way valve is arranged between the electromagnetic valve and the humidifier, and a second one-way valve is arranged between the electromagnetic valve and the gas mixer.

Through the technical scheme, the first one-way valve is positioned between the electromagnetic valve and the humidifier and is used for preventing the mixed gas flowing into the electromagnetic valve from flowing back into the gas drying channel to influence the amount of the mixed gas which subsequently flows into the humidifier and needs to be humidified; the second one-way valve is positioned between the humidifier and the gas mixer, and prevents the humidified gas from flowing back into the humidifier to influence the humidity of the moisture flowing into the gas mixer.

Further, the humidity sensor is electrically connected with the PID controller, and the PID controller is respectively electrically connected with the electromagnetic valve and the humidifier.

Through above-mentioned technical scheme, humidity transducer passes through control circuit and PID controller electric connection, and the signal that humidity transducer detected can feed back to the PID controller, conveniently carries out PID control solenoid valve and humidifier. When the humidity sensor detects that the humidity of the target gas flowing out of the gas mixer is too high, the target gas is fed back to the PID controller, the electromagnetic valve is controlled to be closed to reduce the gas flowing into the gas humidifying channel and further increase the mixed gas flowing into the gas drying channel, meanwhile, the temperature of the humidifier can be controlled through the PID controller to control the humidifying amount, and finally, the dry gas flowing into the gas mixer is more, the moisture is less, and the target gas is obtained after remixing; on the contrary, when the humidity sensor detects that the humidity of the target gas flowing out of the gas mixer is too low, the target gas is fed back to the PID controller, the solenoid valve is controlled to be opened to increase the gas flowing into the gas humidifying channel, the mixed gas flowing into the gas drying channel is further reduced, meanwhile, the temperature of the humidifier can be controlled through the PID controller to control the humidifying amount, and finally, the dry gas flowing into the gas mixer is less, the moisture is more, and the target gas is obtained after remixing. And then continues to form a closed loop as detected by the humidity sensor.

Further, at least two filters are arranged in the gas drying channel.

Through above-mentioned technical scheme, the filter is used for filtering the moisture in the gas mixture that gets into in the gas drying channel, obtains dry gas and flows into in the gas blender.

The beneficial effects of the utility model are that:

1) The gas humidity is controllable, and the micro-flow can be dynamically adjusted. When the humidity sensor detects that the humidity of the target gas flowing out of the gas mixer is too high, the target gas is fed back to the PID controller, the electromagnetic valve is controlled to be closed to reduce the gas flowing into the gas humidifying channel, the mixed gas flowing into the gas drying channel is further increased, meanwhile, the temperature of the humidifier can be controlled through the PID controller to control the humidifying amount, and finally, the dry gas flowing into the gas mixer is enabled to be more, the moisture is less, and the target gas is obtained after remixing. And vice versa.

2) Only one air source is needed for air supply, and the structure is simple. Through the feedback of the humidity sensor, the solenoid valve and the humidifier are controlled through the PID controller so as to control the amount of the moisture flowing into the mixer, and under the condition that the total flow is not changed, the proportion of the dry gas and the moisture is controlled, so that the humidity of the mixed gas is adjusted.

Drawings

FIG. 1 is a schematic diagram of a dynamic micro-flow humidity control device according to the present invention;

in the figure, 1-mixed gas source, 2-gas drying channel, 201-filter, 3-gas humidifying channel, 301-solenoid valve, 302-first one-way valve, 303-humidifier, 304-second one-way valve, 305-PID controller, 4-gas mixer and 5-humidity sensor.

Detailed Description

The technical solutions of the present invention will be described clearly and completely below with reference to embodiments, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the utility model provides a technical scheme:

as shown in fig. 1, a dynamic micro-flow gas humidity control device includes a gas drying channel 2, a gas humidifying channel 3, and a gas mixer 4, the ends of the gas drying channel 2 and the gas humidifying channel 3 are both connected to the gas mixer 4, a humidity sensor 5 is disposed on a gas outlet pipeline of the gas mixer 4, the gas humidifying channel 3 is provided with a PID controller 305, an electromagnetic valve 301 and a humidifier 303, and the PID controller 305 controls the on-off frequency of the electromagnetic valve 301 through a signal fed back by the humidity sensor 5, so as to control the proportion of dry gas and wet gas flowing into the gas mixer 4.

Further, the head ends of the gas drying channel 2 and the gas humidifying channel 3 are both connected with a gas inlet pipe of the mixed gas, and the head ends of the gas inlet pipes are connected to a mixed gas source 1.

Further, the electromagnetic valve 301 is located at the front end of the humidifier 303, a first one-way valve 302 is disposed between the electromagnetic valve 301 and the humidifier 303, and a second one-way valve 304 is disposed between the humidifier 303 and the gas mixer 4.

Further, the humidity sensor 5 is electrically connected to the PID controller 305, and the PID controller 305 is electrically connected to the solenoid valve 301 and the humidifier 303 respectively.

Through the technical scheme, the humidity sensor is electrically connected with the PID controller through the control loop, and the signal detected by the humidity sensor can be fed back to the PID controller, so that the PID control electromagnetic valve and the humidifier are conveniently carried out. When the humidity sensor detects that the humidity of the target gas flowing out of the gas mixer is too high, the target gas is fed back to the PID controller, the electromagnetic valve is controlled to be closed to reduce the gas flowing into the gas humidifying channel and further increase the mixed gas flowing into the gas drying channel, meanwhile, the temperature of the humidifier can be controlled through the PID controller to control the humidification quantity, and finally, the dry gas flowing into the gas mixer is more, the moisture is less, and the target gas is obtained after remixing; on the contrary, when the humidity sensor detects that the humidity of the target gas flowing out of the gas mixer is too low, the target gas is fed back to the PID controller, the solenoid valve is controlled to be opened to increase the gas flowing into the gas humidifying channel, the mixed gas flowing into the gas drying channel is further reduced, meanwhile, the temperature of the humidifier can be controlled through the PID controller to control the humidifying amount, and finally, the dry gas flowing into the gas mixer is less, the moisture is more, and the target gas is obtained after remixing. And then continues to form a closed loop as detected by the humidity sensor.

Further, at least two filters 201 are provided in the gas drying tunnel 2.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A dynamic micro-flow gas humidity control device is characterized in that: including gas drying passageway (2), gas humidifying passageway (3), gas mixer (4), gas drying passageway (2) with the end of gas humidifying passageway (3) all with gas mixer (4) are connected, be equipped with humidity transducer (5) on the gas outlet pipe way of gas mixer (4), gas humidifying passageway (3) are equipped with PID controller (305), solenoid valve (301) and humidifier (303), PID controller (305) pass through the signal of humidity transducer (5) feedback controls the switching frequency of solenoid valve (301), and then come the control flow in the dry wet gas proportion in gas mixer (4).

2. The dynamic micro-flow gas humidity control device as claimed in claim 1, wherein: the head ends of the gas drying channel (2) and the gas humidifying channel (3) are connected with a gas inlet pipe of mixed gas, and the head end of the gas inlet pipe is connected to a mixed gas source (1).

3. The dynamic micro-flow gas humidity control device as claimed in claim 1, wherein: the electromagnetic valve (301) is located at the front end of the humidifier (303), a first one-way valve (302) is arranged between the electromagnetic valve (301) and the humidifier (303), and a second one-way valve (304) is arranged between the humidifier (303) and the gas mixer (4).

4. The dynamic micro-flow gas humidity control device as claimed in claim 1, wherein: the humidity sensor (5) is electrically connected with the PID controller (305), and the PID controller (305) is electrically connected with the electromagnetic valve (301) and the humidifier (303) respectively.

5. The dynamic micro-flow gas humidity control device as claimed in claim 1, wherein: at least two filters (201) are arranged in the gas drying channel (2).