Gas concentration automatic proportioning and heating device

Abstract

The utility model discloses an automatic matching and heating device for gas concentration. The automatic matching and heating device comprises a supply assembly, a matching assembly and a heating assembly, the supply assembly comprises a first air source and a second air source, the first air source comprises a high-pressure air source, a pressure reducing valve, an electromagnetic valve, a mass flow meter and a pneumatic pipe, the second air source comprises a high-pressure air source, a pressure reducing valve, an electromagnetic valve and a mass flow meter, and the proportioning assembly comprises a premixing device, a flame arrester and an air inlet electromagnetic valve. The heating assembly comprises a test container, a thermocouple, a PTC (Positive Temperature Coefficient) heating sheet and a PLC (Programmable Logic Controller); the pressure reducing valve is connected with the high-pressure air source through a pneumatic pipe, the electromagnetic valve is connected with the pressure reducing valve through a pneumatic pipe, the mass flow meter is connected with the electromagnetic valve through a pneumatic pipe, and the first air source and the second air source are connected with the premixing device. The device is reasonable in structural design, can realize automatic control of concentration and temperature, and has the characteristics of simplicity and convenience in operation, automation and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof test detection, in particular to a gas concentration automatic proportioning and heating device. Background Art

[0002] Explosion-proof testing is a safety test conducted to prevent destructive explosions caused by explosive substances (products) in the working environment. Existing explosion-proof testing requires manual adjustment of gas concentration and temperature, which consumes a lot of time and effort. Manual operation is prone to errors, making it difficult to meet test requirements, resulting in high labor costs and low pass rates.

[0003] Therefore, a device for automatically matching and heating gas concentrations is needed to solve the above problems. Utility Model Content

[0004] The utility model provides a gas concentration automatic proportioning and heating device, which aims to solve the problems of high labor cost and low qualification rate in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A gas concentration automatic proportioning and heating device comprises a supply component, a proportioning component and a heating component; the supply component comprises a first gas source and a second gas source, the first gas source comprises a high-pressure gas source, a pressure reducing valve, a solenoid valve, a mass flowmeter and a pneumatic tube, the second gas source comprises a high-pressure gas source, a pressure reducing valve, a solenoid valve and a mass flowmeter, the proportioning component comprises a premixing device, a flame arrester and an air intake solenoid valve, the heating component comprises a test container, a thermocouple, a PTC heating plate and a PLC; the pressure reducing valve is connected to the high-pressure gas source via a pneumatic tube, the solenoid valve is connected to the pressure reducing valve via a pneumatic tube, the mass flowmeter is connected to the solenoid valve via a pneumatic tube, the first gas source and the second gas source are connected to the premixing device, the flame arrester is connected to the premixing device, the air intake solenoid valve is connected to the flame arrester, and the test container is connected to the air intake solenoid valve.

[0007] Preferably, the premixing device is provided with a thermocouple and a PTC heating plate.

[0008] Preferably, an exhaust solenoid valve is provided at the output end of the test container.

[0009] Preferably, a PTC heating plate is installed on the outer surface of the test container, and a thermocouple is installed inside the test container.

[0010] Preferably, the mass flow meter, the solenoid valve, the thermocouple and the PTC heating plate are all connected to the PLC.

[0011] The utility model comprises a supply component, a proportioning component and a heating component; the supply component comprises a gas source 1 and a gas source 2, the gas source 1 comprises a high-pressure gas source, a pressure reducing valve, a solenoid valve, a mass flow meter and a pneumatic tube, the gas source 2 comprises a high-pressure gas source, a pressure reducing valve, a solenoid valve and a mass flow meter, the proportioning component comprises a premixing device, a flame arrester and an air intake solenoid valve, the heating component comprises a test container, a thermocouple, a PTC heating plate and a PLC; the pressure reducing valve is connected to the high-pressure gas source through a pneumatic tube, and the solenoid valve is connected to the pressure reducing valve through a pneumatic tube The mass flowmeter is connected to the solenoid valve through a pneumatic tube, the gas source 1 and the gas source 2 are connected to the premixing device, the flame arrester is connected to the premixing device, the air intake solenoid valve is connected to the flame arrester, and the test container is connected to the air intake solenoid valve; in the utility model, the high-pressure gas source, the pressure reducing valve, the solenoid valve, and the mass flowmeter are connected through a pneumatic tube to form gas source 1 and gas source 2, gas source 1 and gas source 2 are connected to the premixing device, the premixing device is connected to the test container through the flame arrester and the air intake solenoid valve, and the test container is connected to the exhaust solenoid valve. The premixing device is equipped with a PTC heating plate and a thermocouple; the surface of the test container is equipped with a PTC heating plate and a thermocouple, and the inside of the test container is equipped with a thermocouple; the mass flow meter, solenoid valve, PTC heating plate, thermocouple and PLC are connected to realize automatic control of concentration and temperature. By setting the flow rate of the mass flow meter, automatic concentration matching is realized, and temperature control is realized through PID control of the PTC heating plate, making gas distribution and heating operations simple, automatic and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a gas concentration automatic proportioning and heating device proposed by the utility model;

[0013] In the figure: 1. High-pressure gas source; 2. Pressure reducing valve; 3. Solenoid valve; 4. Mass flow meter; 5. Premixing device; 6. Flame arrester; 7. Inlet solenoid valve; 8. Test container; 9. Exhaust solenoid valve; 10. Thermocouple; 11. PTC heating plate; 12. Pneumatic tube; 13. PLC. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0015] Reference Figure 1, a gas concentration automatic proportioning and heating device, including a supply component, a proportioning component and a heating component; the supply component includes a gas source 1 and a gas source 2, the gas source 1 includes a high-pressure gas source 1, a pressure reducing valve 2, a solenoid valve 3, a mass flow meter 4 and a pneumatic tube 12, the gas source 2 includes a high-pressure gas source 1, a pressure reducing valve 2, a solenoid valve 3 and a mass flow meter 4, the proportioning component includes a premixing device 5, a flame arrester 6 and an air inlet solenoid valve 7, the heating component includes a test container 8, a thermocouple 10, PTC Heating plate 11 and PLC13; the pressure reducing valve 2 is connected to the high-pressure gas source 1 through a pneumatic tube 12, the solenoid valve 3 is connected to the pressure reducing valve 2 through a pneumatic tube 12, the mass flowmeter 4 is connected to the solenoid valve 3 through a pneumatic tube 12, the gas source 1 and the gas source 2 are connected to the premixing device 5, the flame arrester 6 is connected to the premixing device 5, the air intake solenoid valve 7 is connected to the flame arrester 6, and the test container 8 is connected to the air intake solenoid valve 7.

[0016] The high-pressure gas source 1, the pressure reducing valve 2, the solenoid valve 3, and the mass flowmeter 4 are connected through a pneumatic tube 12 to form gas source 1 and gas source 2. Gas source 1 and gas source 2 are connected to the premixing device 5. The premixing device 5 is connected to the test container 8 through the flame arrester 6 and the air inlet solenoid valve 7. The test container 8 is connected to the exhaust solenoid valve 9. The premixing device 5 is equipped with a PTC heating plate 11 and a thermocouple 10; the surface of the test container 8 is equipped with a PTC heating plate 11 and a thermocouple 10, and the inside of the test container 8 is equipped with a thermocouple 10; the mass flowmeter 4, the solenoid valve 3, the PTC heating plate 11, the thermocouple 10 are connected to the PLC 13 to realize automatic control of concentration and temperature. By setting the flow rate of the mass flowmeter 4, the concentration is automatically proportioned. By PID control of the PTC heating plate 11, the temperature is controlled, making the gas distribution and heating operations simple, automatic, and efficient.

[0017] The premixing device 5 is provided with a thermocouple 10 and a PTC heating plate 11 for heating and mixing.

[0018] An exhaust solenoid valve 9 is provided at the output end of the test container 8 to control the discharge of gas.

[0019] A PTC heating plate 11 is installed on the outer surface of the test container 8 , and a thermocouple 10 is installed inside the test container 8 to heat the gas inside the test container 8 .

[0020] The mass flow meter 4, the solenoid valve 3, the thermocouple 10 and the PTC heating plate 11 are all connected to the PLC 13 to realize automatic control of concentration and temperature.

[0021] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas concentration automatic proportioning and heating device, characterized by: It includes a supply component, a proportioning component and a heating component; The supply assembly comprises a gas source 1 and a gas source 2, the gas source 1 comprising a high-pressure gas source (1), a pressure reducing valve (2), a solenoid valve (3), a mass flow meter (4) and a pneumatic tube (12), the gas source 2 comprising a high-pressure gas source (1), a pressure reducing valve (2), a solenoid valve (3) and a mass flow meter (4), the proportioning assembly comprising a premixing device (5), a flame arrester (6) and an air intake solenoid valve (7), and the heating assembly comprising a test container (8), a thermocouple (10), a PTC heating plate (11) and a PLC (13); The pressure reducing valve (2) is connected to the high-pressure gas source (1) through a pneumatic tube (12), the solenoid valve (3) is connected to the pressure reducing valve (2) through a pneumatic tube (12), the mass flow meter (4) is connected to the solenoid valve (3) through a pneumatic tube (12), the gas source 1 and the gas source 2 are connected to the premixing device (5), the flame arrester (6) is connected to the premixing device (5), the air intake solenoid valve (7) is connected to the flame arrester (6), and the test container (8) is connected to the air intake solenoid valve (7).

2. The gas concentration automatic proportioning and heating device according to claim 1, characterized in that: The premixing device (5) is provided with a thermocouple (10) and a PTC heating plate (11).

3. The gas concentration automatic proportioning and heating device according to claim 1, characterized in that: An exhaust solenoid valve (9) is provided at the output end of the test container (8).

4. The gas concentration automatic proportioning and heating device according to claim 1, characterized in that: A PTC heating plate (11) is installed on the outer surface of the test container (8), and a thermocouple (10) is installed inside the test container (8).

5. The gas concentration automatic proportioning and heating device according to claim 1, characterized in that: The mass flow meter (4), electromagnetic valve (3), thermocouple (10) and PTC heating plate (11) are all connected to the PLC (13).

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