Gas deodorization system with temperature feedback

Abstract

The utility model aims to solve the problem that the existing plasma gas deodorization device is difficult to accurately control the deodorization efficiency according to the gas temperature. The utility model provides a gas deodorization system with a temperature feedback function. The gas deodorization system comprises a gas deodorization device, the gas deodorization device comprises a box body and a plasma module for deodorization; a gas inlet and a gas outlet are formed in the box body, and a plasma module is arranged in the box body; the system further comprises a temperature acquisition module and a controller. The temperature acquisition module comprises an inlet temperature acquisition assembly for acquiring the gas temperature at the inlet of the box body and an outlet temperature acquisition assembly for acquiring the gas temperature at the outlet of the box body; the inlet temperature acquisition assembly is arranged at the inlet part of the box body, and the outlet temperature acquisition assembly is arranged at the outlet part of the box body; the inlet temperature acquisition assembly and the outlet temperature acquisition assembly are respectively connected with the controller; the controller is connected with the plasma module in the box body; and the controller is connected with the plasma module in the box body.

Description

Technical Field

[0001] The utility model relates to the field of gas deodorization, in particular to a gas deodorization system with temperature feedback. Background Art

[0002] In order to protect the environment, it is necessary to firstly render harmless the gases, liquids and solids directly discharged into the environment, and the gases also need to be treated for odor. Existing malodorous gas treatment mainly includes biological decomposition, activated carbon adsorption, plasma, spray liquid deodorization and photocatalytic oxidation. Among them, the low-temperature plasma method is an efficient, clean and convenient deodorization and purification process. The principle of treating pollutants is: under the action of an external electric field, a large number of high-energy particles generated by air gap discharge bombard the pollutant molecules, ionizing, dissociating and exciting them, triggering a series of complex physical and chemical reactions, so that complex macromolecular pollutants are transformed into simple small molecular safe substances, and toxic and harmful substances are transformed into non-toxic and harmless or low-toxic and low-harm substances, so that pollutants can be degraded and removed, such as the contents shown in the patents with application publication number CN115121096A and application publication number CN111617608A.

[0003] The source of malodorous gas is mainly the volatilization of liquid or solid odor sources, and the degree of volatilization is closely related to temperature. Generally, the higher the temperature, the stronger the volatilization and the higher the odor concentration. Conventional plasma deodorization control mode cannot automatically adjust the deodorization power according to the working conditions, which may easily cause the deodorization power to be insufficient, resulting in the escape of malodorous gas, or the deodorization power to be too large, resulting in the overflow of by-products. Therefore, a gas deodorization system with temperature feedback is needed. Summary of the invention

[0004] The utility model aims to solve the deficiencies of the prior art and provide a gas deodorization system with temperature feedback.

[0005] In order to solve the above problems, the utility model adopts the following solutions:

[0006] A gas deodorization system with temperature feedback comprises a gas deodorization device; the gas deodorization device comprises a box and a plasma module for deodorization; the box is provided with a gas inlet and an outlet, and the box is provided with a plasma module; it also comprises a temperature acquisition module and a controller; the temperature acquisition module comprises an inlet temperature acquisition component for acquiring the gas temperature at the inlet of the box and an outlet temperature acquisition component for acquiring the gas temperature at the outlet of the box; the inlet temperature acquisition component is arranged at the inlet of the box, and the outlet temperature acquisition component is arranged at the outlet of the box; the inlet temperature acquisition component and the outlet temperature acquisition component are also connected to the controller respectively; the controller is connected to the plasma module inside the box.

[0007] Furthermore, the inlet temperature acquisition component includes a temperature sensor.

[0008] Furthermore, the outlet temperature collection component includes a temperature sensor.

[0009] Furthermore, the temperature sensor includes a thermistor, a thermocouple, a resistance temperature detector, a digital thermometer, an analog thermometer, or an infrared sensor.

[0010] Furthermore, the temperature acquisition module also includes a power supply and an analog-to-digital conversion module; wherein the power supply and the temperature sensor are connected in series to form a loop with the input end of the analog-to-digital conversion module; and the output end of the analog-to-digital conversion module is connected to the controller.

[0011] Furthermore, the analog-to-digital conversion module adopts Siemens' model 6ES7288-3AE04-0AA0 analog quantity 4-port input module.

[0012] Furthermore, the power supply is a 24V DC power supply.

[0013] Furthermore, the controller includes a programmable logic control module.

[0014] Furthermore, the plasma module includes a power controller, and the programmable logic control module is connected to the power controller of the plasma module.

[0015] The beneficial effects of the utility model are:

[0016] By setting temperature acquisition modules at the inlet and outlet of the box of the gas deodorization device, the gas temperature can be collected and the collected data can be transmitted to the controller, which is convenient for the controller to adjust the plasma module in the box, thus solving the problem of large fluctuations in odor concentration and unsatisfactory deodorization effect when the temperature changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structural block diagram of Example 1;

[0018] Figure 2 It is a flowchart of Example 1;

[0019] Figure 3 This is a schematic diagram of the temperature acquisition module of Example 1.

[0020] Description of the accompanying drawings: box body 1, temperature acquisition module 2, power supply 21, temperature sensor 22, analog-to-digital conversion module 23, PLC controller 3, power supply controller 4. DETAILED DESCRIPTION

[0021] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the figures only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0023] Embodiment 1:

[0024] like Figures 1 to 3 As shown, a gas deodorization system with temperature feedback includes a gas deodorization device; the gas deodorization device includes a box 1 and a plasma module for deodorization; the box 1 is provided with a gas inlet and an outlet, and the box 1 is provided with a plasma module; it also includes a temperature acquisition module 2 and a controller; the temperature acquisition module 2 includes an inlet temperature acquisition component for acquiring the gas temperature at the inlet of the box and an outlet temperature acquisition component for acquiring the gas temperature at the outlet of the box; the inlet temperature acquisition component is arranged at the inlet of the box 1, and the outlet temperature acquisition component is arranged at the outlet of the box 1; the inlet temperature acquisition component and the outlet temperature acquisition component are also connected to the controller respectively; the controller is connected to the plasma module inside the box 1. It should be noted that the temperature acquisition module 2 is arranged at the gas inlet and outlet of the box 1 in consideration of the fact that the gas will have temperature changes during the flow process, so the two temperature acquisition modules 2 are arranged to calculate the temperature mean in the controller, which is more accurate as the gas temperature in the box 1; wherein the controller calculates the temperature mean in the existing way, and the mean can be obtained by programming by adding the inlet and outlet temperatures and taking the quotient of the sum and 2. In some other embodiments, the temperature acquisition module 2 may be provided only at the gas inlet of the box 1 to determine the temperature of the gas in the box 1 .

[0025] The controller includes a programmable logic control module, namely a PLC controller 3. The plasma module includes a power controller 4, and the programmable logic control module is connected to the power controller 4 of the plasma module to control the output frequency and conduction angle of the power controller 4; it should be noted that the way in which the programmable logic control module controls the power controller 4 is an existing way.

[0026] The structures of the inlet temperature acquisition component and the outlet temperature acquisition component in the temperature acquisition module 2 are consistent. Taking the inlet temperature acquisition component as an example, it includes a temperature sensor 22, a power supply 21 and an analog-to-digital conversion module 23. In this example, the power supply 21 is a 24V DC power supply 21; wherein the power supply 21 is connected in series with the temperature sensor 22 to form a loop with the input end of the analog-to-digital conversion module 23; and the output end of the analog-to-digital conversion module 23 is connected to the controller. The temperature sensor 22 includes a thermistor; it should be noted that in some other embodiments, other components capable of sensing temperature can also be used to replace the thermistor, such as a thermocouple, a resistance temperature detector, a digital thermometer, an analog thermometer or an infrared sensor. The analog-to-digital conversion module 23 uses a Siemens model 6ES7288-3AE04-0AA0 analog 4-port input module. The signal output by the temperature sensor 22 may be a current signal, a voltage signal or a frequency signal. In this example, the temperature sensor 22 and the power supply 21 are connected in series and then output a current signal, wherein the value range of the current signal is between 4mA and 20mA. The output current is converted into a digital signal by the analog-to-digital conversion module 23 to represent the temperature collected by the temperature sensor 22 and transmitted to the controller, which finally controls the output of the power supply controller 4 according to the temperature. The temperature value converted from the output current signal in this example and the relationship with the output of the power supply controller 4 are shown in Table 1 below:

[0027] Table 1

[0028]

[0029] During the actual implementation process, the following working condition data were collected:

[0030] The deodorization system of a sewage lifting pump station in the north assumes that the default operating power is set at 20 degrees. The deodorization device is located outdoors, without insulation measures, and the odor temperature fluctuates with the atmospheric temperature. In autumn, the temperature difference between morning and evening is large, and the concentration of odor changes greatly.

[0031] Time period 1: 5 am, temperature is around 10 degrees. If the operating power is not adjusted at this time, byproduct gas will overflow and waste electricity. The whole process of temperature automatic adjustment system is as follows:

[0032] 1) The temperature sensor 22 collects the temperature signal and converts it into a 10 degree digital signal through the analog-to-digital conversion module 23.

[0033] 2) Transmit the digital signal of temperature 10 degrees to PLC controller 3.

[0034] 3) PLC controller 3 determines that the temperature range of 10 degrees is the first level.

[0035] 4) PLC controller 3 reads the corresponding recommended frequency of 500 Hz and recommended conduction angle of 59 degrees.

[0036] 5) PLC controller 3 sends the frequency 500 Hz and conduction angle 59 degrees to power supply controller 4.

[0037] 6) The power controller 4 operates at a frequency of 500 Hz and a conduction angle of 59 degrees.

[0038] 7) Complete deodorization power adjustment.

[0039] Time period 2: 1pm, temperature 29 degrees, if the operating power is not adjusted, odor will be emitted. The system automatic adjustment process is as follows:

[0040] 1) The temperature sensor 22 collects the temperature signal and converts it into a digital signal of 29 degrees through the analog-to-digital conversion module 23.

[0041] 2) Transmit the digital signal of temperature 29 degrees to PLC controller 3.

[0042] 3) PLC controller 3 determines that 29 degrees is the 8th level in the temperature range.

[0043] 4) PLC controller 3 reads the corresponding recommended frequency 1200 Hz and recommended conduction angle 69 degrees.

[0044] 5) PLC controller 3 sends the frequency 1200 Hz and conduction angle 69 degrees to power supply controller 4.

[0045] 6) The power controller 4 operates at a frequency of 1200 Hz and a conduction angle of 69 degrees.

[0046] 7) Complete deodorization power adjustment.

[0047] The above description is only a specific example of the utility model and does not constitute any limitation to the utility model. Obviously, for professionals in this field, after understanding the content and principle of the utility model, it is possible to make various modifications and changes in form and details without departing from the principle and structure of the utility model, but these modifications and changes based on the idea of ​​the utility model are still within the scope of protection of the claims of the utility model.

Claims

1. A gas deodorization system with temperature feedback, comprising a gas deodorization device; the gas deodorization device comprises a housing (1) and a plasma module for deodorization; the housing (1) is provided with a gas inlet and an outlet, and the housing (1) is provided with a plasma module; characterized in that: It also comprises a temperature acquisition module (2) and a controller; the temperature acquisition module (2) comprises an inlet temperature acquisition component for acquiring the temperature of gas at the inlet of the box body and an outlet temperature acquisition component for acquiring the temperature of gas at the outlet of the box body; the inlet temperature acquisition component is arranged at the inlet of the box body (1), and the outlet temperature acquisition component is arranged at the outlet of the box body (1); the inlet temperature acquisition component and the outlet temperature acquisition component are also respectively connected to the controller; the controller is connected to the plasma module inside the box body (1).

2. A gas deodorization system with temperature feedback according to claim 1, characterized in that: The inlet temperature acquisition component comprises a temperature sensor (22).

3. A gas deodorization system with temperature feedback according to claim 1, characterized in that: The outlet temperature collection component comprises a temperature sensor (22).

4. A gas deodorization system with temperature feedback according to claim 2 or 3, characterized in that: The temperature sensor (22) comprises a thermistor, a thermocouple, a resistance temperature detector, a digital thermometer, an analog thermometer, or an infrared sensor.

5. A gas deodorization system with temperature feedback according to claim 4, characterized in that: The temperature acquisition module (2) further comprises a power supply (21) and an analog-to-digital conversion module (23); wherein the power supply (21) and the temperature sensor (22) are connected in series and form a loop with the input end of the analog-to-digital conversion module (23); and the output end of the analog-to-digital conversion module (23) is connected to the controller.

6. A gas deodorization system with temperature feedback according to claim 5, characterized in that: The analog-to-digital conversion module (23) adopts a Siemens 6ES7288-3AE04-0AA0 analog quantity 4-port input module.

7. A gas deodorization system with temperature feedback according to claim 5, characterized in that: The power supply (21) is a 24V DC power supply (21).

8. A gas deodorization system with temperature feedback according to claim 1, characterized in that: The controller includes a programmable logic control module.

9. A gas deodorization system with temperature feedback according to claim 8, characterized in that: The plasma module comprises a power supply controller (4), and the programmable logic control module is connected to the power supply controller (4) of the plasma module.

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