Automatic protection system of ozone generator

Abstract

The utility model discloses an ozone generator automatic protection system which comprises an ozone generator, an inlet of the ozone generator is communicated with industrial oxygen through an oxygen pipeline, an outlet of the ozone generator is communicated with ozone using equipment through an ozone pipeline, and an automatic pressure reducing valve is arranged on the oxygen pipeline. A pressure transmitter, an oxygen cut-off valve and an oxygen flow meter are sequentially arranged on the oxygen pipeline between the automatic pressure reducing valve and the inlet of the ozone generator; an ozone stop valve and an ozone flow meter are sequentially arranged on the ozone pipeline close to the outlet of the ozone generator; the oxygen flow meter and the ozone flow meter are electrically connected with the signal input end of the PLC respectively, and the signal output end of the PLC is electrically connected with the ozone generator, the automatic pressure reducing valve, the pressure transmitter, the oxygen stop valve, the ozone stop valve and the audible and visual alarm respectively. The PLC is used for remote control, so that the influence caused by oxygen pressure fluctuation and cut-off is reduced, and the stable operation of an ozone generation process is ensured.

Description

Technical Field

[0001] The utility model relates to the field of organic chemical sewage treatment equipment, in particular to an automatic protection system for an ozone generator. Background Art

[0002] Ozone is a powerful oxidant that effectively kills microorganisms such as bacteria, viruses, and spores in water. It can also oxidize and degrade organic pollutants, improving the safety of drinking water. Ozone can oxidize organic matter and heavy metal ions in industrial wastewater, reducing toxicity and improving biodegradability. It can also remove color and odor to meet emission standards. Industrial ozone, leveraging its strong oxidizing properties, disinfects, oxidizes and decomposes harmful substances, and improves water and air quality in various industrial processes. It is of great significance to ensuring the safety and environmental protection of industrial production processes and improving product quality.

[0003] At present, the main method for producing ozone is the oxygen corona method. Specifically, compressed air is separated by pressure swing adsorption to produce oxygen, which is then sent to the ozone generator to prepare ozone for subsequent use. However, due to the large fluctuations in the oxygen pressure generated by pressure swing adsorption, high or low oxygen pressure will affect the ozone generator, so the following problems may occur during operation: (1) The oxygen pressure is too high; although a certain oxygen pressure can help increase the output of the ozone generator, excessive pressure does not mean that the ozone output will increase proportionally. In fact, when the oxygen pressure exceeds the optimal working pressure range of the ozone generator design, it may cause the gas gap in the corona discharge area to increase, which in turn reduces the discharge efficiency and thus reduces the ozone generation efficiency. When high-pressure oxygen enters the ozone generator, if the equipment cannot effectively withstand such high pressure, it may cause internal components such as electrodes, insulation materials and seals to overload, accelerate wear, aging or damage, thereby affecting the life and safety of the equipment. Under high-voltage conditions, even if the amount of ozone produced does not increase significantly, the heat generated by high-voltage discharge will increase. If there is no adequate cooling mechanism to balance this additional heat, the internal temperature of the ozone generator may rise, further affecting the performance of the equipment and potentially causing safety issues. (2) The oxygen pressure is too low or cut off. Because the ozone generator mainly converts oxygen molecules (O2) into ozone molecules (O3) through high-voltage discharge or specific technical means. Once the oxygen supply is interrupted, the basic substance for generating ozone is lost, so the ozone generation process will stop immediately. If the oxygen supply is suddenly cut off, especially in a high-voltage discharge ozone generator, without cooling and consumption medium, the temperature inside the discharge chamber may rise rapidly. If the power is not cut off in time or protective measures are not taken, the electrodes or other key components may be burned. Utility Model Content

[0004] The utility model provides an automatic protection system for an ozone generator, which can timely control and cut off the power supply when the oxygen pressure fluctuates greatly, effectively protecting the ozone generator and ensuring the safe and stable operation of the ozone generator.

[0005] To achieve its purpose, the utility model adopts the following technical solutions:

[0006] An ozone generator automatic protection system includes an ozone generator, wherein the ozone generator inlet is connected to industrial oxygen through an oxygen pipeline, and the ozone generator outlet is connected to ozone using equipment through an ozone pipeline.

[0007] The oxygen pipeline is provided with an automatic pressure reducing valve, and the oxygen pipeline between the automatic pressure reducing valve and the ozone generator inlet is provided with a pressure transmitter, an oxygen shut-off valve and an oxygen flow meter in sequence; the ozone pipeline near the ozone generator outlet is provided with an ozone shut-off valve and an ozone flow meter in sequence;

[0008] The oxygen flowmeter and ozone flowmeter are electrically connected to the signal input end of the PLC programmable controller respectively, and the signal output end of the PLC programmable controller is electrically connected to the ozone generator, automatic pressure reducing valve, pressure transmitter, oxygen shut-off valve, ozone shut-off valve and sound and light alarm respectively.

[0009] Furthermore, the automatic pressure reducing valve controls the pressure of oxygen to be 0.1-0.2 MPa.

[0010] Furthermore, the sound and light alarm is an explosion-proof sound and light alarm.

[0011] Furthermore, the ozone generator is a corona ozone generator.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The automatic protection system for an ozone generator provided by the utility model utilizes the working principle of a PLC programmable controller to remotely control the automatic voltage stabilization and automatic cut-off programs, thereby reducing the impact of pressure fluctuations and flow interruptions at the inlet of the ozone generator on the device. By arranging automated settings such as an automatic pressure reducing valve, an oxygen flow meter, an ozone flow meter, and an audible and visual alarm device, the system ensures stable operation of the ozone generator and automatic cut-off in the event of a fault, effectively protecting the safety of the ozone generator equipment and ensuring the safe, stable, and continuous operation of the ozone generation process. The system has a high degree of intelligence and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the automatic protection system of the ozone generator of the present utility model;

[0015] In the figure: 1- ozone generator; 2- oxygen pipeline; 3- automatic pressure reducing valve; 4- pressure transmitter; 5- oxygen shut-off valve; 6- oxygen flow meter; 7- ozone pipeline; 8- ozone shut-off valve; 9- ozone flow meter; 10- PLC programmable controller; 11- sound and light alarm. DETAILED DESCRIPTION

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] like Figure 1 As shown, the utility model is an automatic protection system for an ozone generator, including an ozone generator 1. The ozone generator 1 uses a corona method ozone generator, which uses a high-voltage electric field to act on oxygen, decomposes oxygen molecules into oxygen atoms by corona discharge, and then combines the oxygen atoms to form ozone. This method is highly efficient and can produce a large amount of ozone in a short period of time. The inlet of the ozone generator 1 is connected to industrial oxygen through an oxygen pipe 2, and the outlet of the ozone generator 1 is connected to the ozone-using equipment through an ozone pipe 7. Metal spiral wound gaskets are used at all pipe flange connections, and the pipes are subjected to an airtightness test. In order to prevent ozone from corroding the device, the equipment and related equipment and facilities used in the device are all made of stainless steel.

[0018] The oxygen pipeline 2 is equipped with an automatic pressure reducing valve 3, which sets the oxygen pressure at 0.1 MPa. During operation, the automatic pressure reducing valve 3 can adjust the oxygen inlet pressure to be stable. The oxygen pipeline 2 between the automatic pressure reducing valve 3 and the inlet of the ozone generator 1 is equipped with a pressure transmitter 4, an oxygen shut-off valve 5, and an oxygen flowmeter 6. The ozone pipeline 7 near the outlet of the ozone generator 1 is equipped with an ozone shut-off valve 8 and an ozone flowmeter 9.

[0019] The oxygen flowmeter 6 and ozone flowmeter 9 are respectively electrically connected to the signal input terminal of the PLC programmable controller 10, and the signal output terminal of the PLC programmable controller 10 is respectively electrically connected to the ozone generator 1, the automatic pressure reducing valve 3, the pressure transmitter 4, the oxygen shut-off valve 5, the ozone shut-off valve 8, and the sound and light alarm 11, thereby achieving interlock control, which is intelligent and convenient. The interlock setting of the PLC programmable controller 10 can be set on or off on the display. The oxygen pressure interlock and the oxygen / ozone flow interlock need to be set independently.

[0020] The sound and light alarm 11 is explosion-proof and bears the corresponding explosion-proof marking. The light alarm portion of the sound and light alarm uses an ultra-bright LED light source, coupled with a timing circuit to achieve a flashing effect. Upon receiving an alarm signal, the timing circuit activates, causing the LED to flash rapidly at a specific frequency and pattern, creating a strong visual impact. Even in noisy environments, the visual warning can alert workers to potential dangers.

[0021] Before production, all pipes and fittings in the system are tested for leaks at a pressure of 1.0 MPa to prevent leaks during production. During operation, when both the oxygen flowmeter 6 and the ozone flowmeter 9 display 0 m³ / h, the PLC 10 receives the signal and controls the simultaneous closure of the oxygen shut-off valve 5 and the ozone shut-off valve 8, automatically shutting down the ozone generator 1.

[0022] The PLC programmable controller 10 is interlocked with the sound and light alarm 11. When the oxygen pressure deviates from the set index, the sound and light alarm 11 sends out a sound and light alarm to remind the operator to conduct on-site inspection and adjust the oxygen pressure; when the oxygen flow meter 6 or the ozone flow meter 9 displays 0, the sound and light alarm 11 sends out a sound and light alarm to remind the operator to conduct on-site inspection to see if the instrument shows a fault, thereby effectively protecting the ozone generator 1 and ensuring the safe and stable operation of the ozone generator 1.

Claims

1. An ozone generator automatic protection system, comprising an ozone generator (1), wherein the inlet of the ozone generator (1) is connected to industrial oxygen through an oxygen pipe (2), and the outlet of the ozone generator (1) is connected to an ozone using device through an ozone pipe (7), characterized in that: The oxygen pipeline (2) is provided with an automatic pressure reducing valve (3); the oxygen pipeline (2) between the automatic pressure reducing valve (3) and the inlet of the ozone generator (1) is provided with a pressure transmitter (4), an oxygen shut-off valve (5) and an oxygen flow meter (6) in sequence; the ozone pipeline (7) near the outlet of the ozone generator (1) is provided with an ozone shut-off valve (8) and an ozone flow meter (9) in sequence; The oxygen flowmeter (6) and the ozone flowmeter (9) are respectively electrically connected to the signal input end of the PLC programmable controller (10), and the signal output end of the PLC programmable controller (10) is respectively electrically connected to the ozone generator (1), the automatic pressure reducing valve (3), the pressure transmitter (4), the oxygen shut-off valve (5), the ozone shut-off valve (8) and the sound and light alarm (11).

2. An ozone generator automatic protection system according to claim 1, characterized in that: The automatic pressure reducing valve (3) controls the oxygen pressure to be 0.1-0.2 MPa.

3. An ozone generator automatic protection system according to claim 2, characterized in that: The sound and light alarm (11) is an explosion-proof sound and light alarm.

4. An ozone generator automatic protection system according to any one of claims 1 to 3, characterized in that: The ozone generator (1) is a corona ozone generator.

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