Fire prevention device of plasma oil smoke purification equipment

Abstract

The invention relates to the field of lampblack purification equipment, in particular to a plasma lampblack purification equipment fire prevention device which comprises a shell and a cooling water pipe, a plasma purification area is arranged in the shell, an air inlet cooling area is arranged on the front portion of the left end of the shell and is of a Venturi structure, and the plasma purification area is arranged behind the air inlet cooling area. A tail gas emission area is arranged behind the plasma purification area, a control area is arranged on the side of the plasma purification area and comprises a temperature controller, and the temperature controller controls an alarm and an electromagnetic valve; and a protection area is arranged above the plasma purification area and comprises a spraying device and an anti-explosion electromagnetic valve. According to the device, real-time temperature monitoring is achieved through the temperature controller and the temperature sensor, and meanwhile the purpose of fire prevention is achieved through the air inlet cooling area, the control area and the protection area.

Description

Technical Field

[0001] This invention patent relates to the field of oil fume purification equipment, especially the fire prevention device for plasma oil fume purification equipment. Background Art

[0002] When the plasma oil fume removal equipment is in operation, the ionization field decomposes the oil fume through high-voltage corona discharge. However, long-term continuous operation is likely to cause two major hidden dangers: one is that the electron impact during discharge forms a conductive channel in the dielectric material, leading to breakdown; the other is that the high-voltage porcelain bottle has micro-cracks in the insulating layer due to heat accumulation, resulting in a sharp drop in insulation performance. The superposition of the two will trigger arc discharge between the electrodes, generating a high-temperature arc above 3000 °C, which can ignite the oil mist in the equipment and the combustible gas in the environment. When a fire breaks out in the equipment, it is necessary to open the equipment before extinguishing the fire, which greatly affects the fire extinguishing efficiency and often causes serious losses to the equipment.

[0003] The existing patent CN212440604U mentions a cooling method. First, water spraying and a water blocking device are used for cooling, suppressing odors, and collecting large particle oil mist. However, putting the cooling method in the front can only reduce the probability of fire to a certain extent. Once the equipment has been discharging for a long time, the operating temperature inside the equipment will still rise. Therefore, there is an urgent need for a fire prevention device for plasma oil fume purification equipment that can overcome the problems of the existing technology and achieve the purpose of cooling and fire prevention and control at the same time. Summary of the Invention

[0004] Problems to be Solved It is mainly used to solve the problems that the existing plasma oil fume purification equipment is prone to catch fire during long-term operation and the fire extinguishing is not timely, and provides a fire prevention device for plasma oil fume purification equipment.

[0005] Technical Solution The fire prevention device for the plasma oil fume purification equipment of the present invention includes a housing and a cooling water pipe. There is a plasma purification area inside the housing. An intake air cooling area is arranged at the front part of the left end of the housing. The intake air cooling area is of a Venturi structure. Behind the intake air cooling area is the plasma purification area. Behind the plasma purification area is the tail gas emission area. The side of the plasma purification area is the control area, and the control area includes a temperature controller, which controls an alarm and a solenoid valve. Above the plasma purification area is the protection area, and the protection area includes a spraying device and an explosion-proof solenoid valve.

[0006] As a preferred technical solution, there are three groups of temperature controllers, which are arranged on the side wall of the housing. A temperature sensor is arranged inside it, and the temperature controller is electrically connected to the alarm and the solenoid valve.

[0007] As a preferred technical solution, the solenoid valve is arranged on the cooling water pipe. The cooling water pipe is connected to a water pump. A main valve is arranged upstream of the solenoid valve. The cooling water pipe downstream of the solenoid valve is arranged on the top of the housing and is arranged in an "S" shape.

[0008] As a preferred technical solution, a spray device is fixedly installed on the cooling water pipe. The spray device includes a branch water pipe, a branch controller is arranged at the node of the branch water pipe, a spray head is fixedly installed at the lower end of the branch controller, and the spray head includes a spray port and a hydrophobic guide groove.

[0009] As a preferred technical solution, the explosion-proof solenoid valve in the protection area includes an explosion-proof connecting wire. The explosion-proof solenoid valve is electrically connected to the control area and the temperature controller, and controls the power supply of the plasma purification area.

[0010] As a preferred technical solution, a rain shield is fixedly installed on the top of the explosion-proof solenoid valve.

[0011] As a preferred technical solution, the inside of the intake air cooling area is of a three-stage structure. Its left section is the inlet section, the middle section is the throat, and the right end is the diffusion section. The diffusion section is connected to the plasma purification area.

[0012] As a preferred technical solution, an ionization section is arranged in the plasma purification area. The rear end of the ionization section is set as the collection section, and a tail gas emission area is arranged at the rear end of the collection section.

[0013] Beneficial effects The beneficial effects of the present invention are as follows: 1. This device uses a temperature controller and a temperature sensor to achieve real-time monitoring of temperature, and at the same time uses the intake air cooling area, the control area and the protection area to achieve the purpose of preventing fire.

[0014] 2. The intake air cooling area of this device uses a Venturi structure. After the gas enters the inlet section, it enters the relatively narrow middle section throat. Since the cross-sectional area of the flow passage decreases, the flow velocity of the gas increases. This structure can achieve the effect of variable diameter acceleration, physically reducing the temperature of the intake air, thereby reducing the probability of breakdown and fire. At the same time, it promotes the gas flow inside the shell, improves the flow velocity and can improve the working efficiency.

[0015] 3. The temperature controller in the control area of this device is electrically connected to the alarm and the solenoid valve, and a temperature sensor is arranged inside the temperature controller. When the actual temperature is higher than the set temperature, the temperature controller controls the alarm to transmit an alarm signal to the personnel in the central control room, and at the same time starts the solenoid valve to control the cooling water pipe, and further opens the corresponding spray head to directly spray, which can cool down or extinguish the fire in the first time. The explosion-proof solenoid valve is electrically connected to the temperature controller, and the power supply of the plasma purification area is cut off in time to prevent the circuit from being burned out and short-circuited. Description of the drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic diagram of the plasma purification area of the present invention; Figure 3 is a schematic diagram of the intake air cooling area of the present invention; Figure 4 is the present invention Figure 2 a partial enlarged schematic diagram of area A therein; Figure 5 is the present invention Figure 2 a partial enlarged schematic diagram of area B therein; Figure 6 is the present invention Figure 2 a partial enlarged schematic diagram of area C therein; Figure 7 is a schematic diagram of the temperature controller control panel of the present invention; Figure 8 is a schematic diagram of the process of the control area of the present invention; 1 - housing; 2 - intake air cooling area; 21 - inlet section; 22 - throat; 23 - diffuser section; 3 - plasma purification area; 31 - ionization section; 32 - collection section; 4 - tail gas emission area; 5 - control area; 51 - temperature controller; 52 - alarm; 53 - solenoid valve; 6 - protection area; 61 - spraying device; 611 - lane divider controller; 612 - lane dividing water pipe; 613 - nozzle; 6131 - spraying orifice; 6132 - hydrophobic guide groove; 62 - explosion-proof solenoid valve; 621 - explosion-proof connection line; 622 - rain cover; 7 - cooling water pipe; 8 - main valve. Detailed implementation manners

[0018] In combination with the drawings, the fire prevention device of the plasma oil fume purification equipment of the present invention will be further described.

[0019] As shown in the attached Figure 1The shown device is a fire prevention device for a plasma oil fume purification equipment, which includes a housing 1 and a cooling water pipe 7. A plasma purification area 3 is provided inside the housing. At the front part of the left end of the housing 1, an air intake cooling area 2 is arranged. The air intake cooling area 2 is of a Venturi structure. Behind the air intake cooling area 2 is the plasma purification area 3. Behind the plasma purification area 3 is an exhaust gas emission area 4. On the side of the plasma purification area 3 is a control area 5. The control area 5 includes a temperature controller 51, and the temperature controller 51 controls an alarm 52 and a solenoid valve 53. Above the plasma purification area 3 is a protection area 6. The protection area 6 includes a spraying device 61 and an explosion-proof solenoid valve 62.

[0020] As shown in the Figure 1 and 8 figure, there are three groups of temperature controllers 51, which are arranged on the side wall of the housing 1. Temperature sensors are arranged inside them, which can respectively monitor the temperatures of corresponding areas. The temperature controller 51 is electrically connected to the alarm 52 and the solenoid valve 53. As the control center, the temperature controller 51 can monitor the temperature in the first time, and control the alarm 52 and the solenoid valve 53 to timely cut off the main control power supply, prevent the circuit from being burned out and short-circuited, and achieve fire extinguishing in the first time.

[0021] As shown in the Figure 1-2 figure, the solenoid valve 53 is arranged on the cooling water pipe 7. The cooling water pipe 7 is connected with a water pump. A main valve 8 is arranged upstream of the solenoid valve 53. The cooling water pipe 7 downstream of the solenoid valve 53 is arranged on the top of the housing 1, and is arranged in an "S" shape, corresponding to different areas respectively.

[0022] As shown in the Figure 2 and 6 figure, the spraying device 61 is fixedly installed on the cooling water pipe 7. The spraying device 61 includes a branch water pipe 612. A branch controller 611 is arranged at the node of the branch water pipe 612. A spray head 613 is fixedly installed at the lower end of the branch controller 611. The spray head 613 includes a spray port 6131 and a hydrophobic guide groove 6132. The branch controller 611 can better distinguish areas and make spraying judgments, can respond to the fire extinguishing requirements timely and accurately without wasting cooling water, and minimize losses to the greatest extent. The spray port 6131 and the hydrophobic guide groove 6132 can improve the spraying speed, and the diversion of the hydrophobic guide groove 6132 can prevent the cooling water from covering below the spray port.

[0023] As shown in the Figure 4 and 8 figure, the explosion-proof solenoid valve 62 in the protection area 6 includes an explosion-proof connecting wire 621. The explosion-proof solenoid valve 62 is electrically connected to the control area 5 and the temperature controller 51, and controls the power supply of the plasma purification area 3.

[0024] Furthermore, a rain-proof cover 622 is fixedly installed on the top of the explosion-proof solenoid valve 62. It can also operate in rainy days without causing a short circuit in the circuit.

[0025] As shown in the Figure 3As shown in the figure, the interior of the intake air cooling zone 2 has a three-section structure. Its left section is the inlet section 21, the middle section is the throat 22, and the right end is the diffuser section 23. The diffuser section 23 is connected to the plasma purification zone 3. Since the cross-sectional area of the flow passage inside the channel decreases, the flow velocity of the gas increases. This structure can achieve the effect of variable diameter acceleration, and this structure can physically reduce the temperature of the intake air, thereby reducing the probability of breakdown and ignition.

[0026] As shown in the attached Figure 2 figure, further, the plasma purification zone 3 is provided with an ionization section 31. The rear end of the ionization section 31 is set as the collection section 32, and a tail gas discharge zone 4 is provided at the rear end of the collection section 32.

[0027] The working principle of the present invention is as follows: First, the gas enters the plasma purification zone 3 through the intake air cooling zone 2. The intake air cooling zone 2 uses a Venturi structure. After the gas enters the inlet section 21, it enters the relatively narrow middle section throat 22. Since the cross-sectional area of the flow passage inside the channel decreases, the flow velocity of the gas increases. This structure can achieve the effect of variable diameter acceleration, and this structure can physically reduce the temperature of the intake air, thereby reducing the probability of breakdown and ignition, and at the same time promoting the gas flow inside the housing 1, improving the flow velocity and working efficiency. Next, the gas enters the plasma purification zone 3 and corona discharges in the ionization section 31. Since it is easy to break down and reduce the insulation performance of the high-voltage porcelain bottle during long-term operation, it is easy to cause arcing and sparking, making the actual temperature higher than the set value of the temperature sensor. The temperature controller 51 controls the alarm 52 to transmit an alarm signal to the personnel in the central control room, and at the same time starts the solenoid valve 53 to control the water supply of the cooling water pipe 7. When the cooling water is transported to the top of the housing 1, the temperature controller 51 will further accurately determine which column has too high a temperature, and the lane controller 611 will open the corresponding nozzle 613 to directly spray the area with fire, which can cool down or extinguish the fire in the first time. The explosion-proof solenoid valve 62 is electrically connected to the temperature controller 51 and can timely cut off the power supply of the plasma purification zone to prevent the circuit from being burned out and short-circuited. Therefore, through front-end physical cooling and rear-end intelligent monitoring, the purposes of cooling and fire prevention can be achieved simultaneously, which is effectively different from the existing plasma oil fume purification equipment.

[0028] The above-described embodiments are only used to describe the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should all fall within the protection scope of the present invention. The technical content requested to be protected by the present invention has been fully recorded in the claims.

Claims

1. Anti - fire device for plasma oil fume purification equipment, including a housing (1) and a cooling water pipe (7). There is a plasma purification area (3) inside the housing. It is characterized in that: At the front part of the left end of the housing (1), there is an intake air cooling area (2), which is of a Venturi structure. Behind the intake air cooling area (2) is a plasma purification area (3), and behind the plasma purification area (3) is an exhaust gas discharge area (4). On the side of the plasma purification area (3) is a control area (5), and the control area (5) includes a temperature controller (51), which controls an alarm (52) and a solenoid valve (53); above the plasma purification area (3) is a protection area (6), and the protection area (6) includes a spraying device (61) and an explosion-proof solenoid valve (62).

2. The anti - fire device for the plasma oil fume purification equipment according to claim 1, characterized in that: There are three groups of the temperature controllers (51), which are arranged on the side wall of the housing (1). Temperature sensors are arranged inside them, and the temperature controllers (51) are electrically connected to the alarm (52) and the solenoid valve (53).

3. The anti - fire - starting device of the plasma oil fume purification equipment according to claim 2, wherein: The solenoid valve (53) is arranged on a cooling water pipe (7), the cooling water pipe (7) is connected to a water pump, a main valve (8) is arranged upstream of the solenoid valve (53), and the cooling water pipe (7) downstream of the solenoid valve (53) is arranged on the top of the housing (1) and is arranged in an "S" shape.

4. The anti - fire device for the plasma oil fume purification equipment according to claim 3, characterized in that: The cooling water pipe (7) is fixedly installed with a spraying device (61). The spraying device (61) includes a branch water pipe (612). A branch controller (611) is arranged at the node of the branch water pipe (612). A spray head (613) is fixedly installed at the lower end of the branch controller (611). The spray head (613) includes a spraying port (6131) and a hydrophobic guide groove (6132).

5. The anti - fire - starting device of the plasma oil fume purification equipment according to claim 1, characterized in that: The explosion-proof solenoid valve (62) in the protection area (6) includes an explosion-proof connecting wire (621). The explosion-proof solenoid valve (62) is electrically connected to the control area (5) and the temperature controller (51), and controls the power supply of the plasma purification area (3).

6. The anti - fire - starting device of the plasma oil fume purification equipment according to claim 1, wherein: A rain shield (622) is fixedly installed at the top of the explosion-proof solenoid valve (62).

7. The anti - fire - starting device of the plasma oil fume purification equipment according to claim 1, characterized in that: The inside of the intake air cooling area (2) is of a three-section structure. Its left section is an inlet section (21), the middle section is a throat (22), and the right end is a diffuser section (23). The diffuser section (23) is communicated with the plasma purification area (3).

8. The anti - fire - starting device of the plasma oil fume purification equipment according to claim 1, characterized in that: An ionization section (31) is arranged in the plasma purification area (3). The rear end of the ionization section (31) is set as a collection section (32), and an exhaust gas discharge area (4) is arranged at the rear end of the collection section (32).

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