A control system and method for odor transmission

Abstract

This invention discloses an odor transmission control system and method. The system includes: a transmission pipeline, on which a parameter detection component, an opening adjustment component, and an exhaust power component are sequentially arranged from upstream to downstream. The parameter detection component includes a gas flow rate sensor, a gas concentration sensor, and a gas pressure sensor; and a control unit electrically connected to the parameter detection component, the opening adjustment component, and the exhaust power component. The control unit is used to control the opening adjustment component and the exhaust power component based on the detection results of the parameter detection component. This invention addresses the problem that existing odor transmission systems lack control over gas concentration and pressure during odor transmission, making it difficult to achieve flexible and precise control of the odor transmission process through adjustment of a sector-shaped regulating valve, which is detrimental to subsequent deodorization processes. Furthermore, the manual adjustment of the sector-shaped regulating valve's opening degree is highly dependent on the operator's skill level and sense of responsibility.

Description

Technical Field

[0001] This invention belongs to the field of odor transmission technology, and more specifically, relates to an odor transmission control system and method. Background Technology

[0002] With improved living standards, people have higher requirements for their surrounding environment; and odor is one of the biggest factors affecting the living environment. Because the threshold range for foul odors is wide, treating them requires significantly more effort. Current treatment methods mainly involve biological deodorization, catalytic oxidation, and chemical reactions to address odor problems in wastewater treatment plants. In biological deodorization, the odor needs to be collected and then transported through an odor transmission system for centralized further treatment. Existing odor transmission systems use fans to provide the power for odor transmission and control the flow and flow of odor through sector valves and check valves. Such systems lack control over gas concentration and pressure during transmission, making it difficult to achieve flexible and precise control of the odor transmission process through adjusting sector valves, which is detrimental to subsequent deodorization processes. Furthermore, manually adjusting the sector valves relies heavily on the operator's skill and sense of responsibility. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an odor transmission control system and method. This solution addresses the lack of regulation of gas concentration and pressure in existing odor transmission systems, making it difficult to achieve flexible and precise control of the odor transmission process through adjustment of the sector-shaped regulating valve, which is detrimental to subsequent deodorization processes. Furthermore, the manual adjustment of the sector-shaped regulating valve's opening degree is highly dependent on the operator's skill level and sense of responsibility.

[0004] To achieve the above objectives, the present invention provides an odor transmission control system, the system comprising:

[0005] The transmission pipeline is provided with a parameter detection component, an opening adjustment component, and an exhaust power component in sequence from upstream to downstream. The parameter detection component includes a gas flow rate sensor, a gas concentration sensor, and a gas pressure sensor.

[0006] The control unit is electrically connected to the exhaust power component, the opening adjustment component, and the parameter detection component. The control unit is used to control the opening adjustment component and the exhaust power component according to the detection result of the parameter detection component.

[0007] Optionally, the exhaust power component includes a fan.

[0008] Optionally, the opening adjustment component includes an aperture valve.

[0009] Optionally, an electric drive mechanism is connected to the aperture valve, which is used to drive the aperture valve to change its opening degree.

[0010] Optionally, the control unit includes a first control unit and a second control unit. The first control unit is electrically connected to the gas concentration sensor, the pressure sensor, and the opening adjustment component. The first control unit is used to control the opening of the opening adjustment component based on the concentration value and pressure value detected by the gas concentration sensor and the pressure sensor.

[0011] Optionally, the second control unit is electrically connected to the first control unit and the exhaust power component, and the second control unit is used to receive control information from the first control unit and control the power of the exhaust power component.

[0012] Optionally, the system may further include a first alarm unit and a second alarm unit, which are electrically connected to the first control unit and the second control unit, respectively.

[0013] The present invention also provides an odor transmission control method, based on the above-described odor transmission control system, the method comprising:

[0014] Set concentration thresholds and air pressure thresholds;

[0015] Detect the concentration and pressure of the gas in the transmission pipeline;

[0016] The opening adjustment component is controlled based on the comparison results of the concentration value and the air pressure value with the concentration threshold and the air pressure threshold, respectively. When the concentration value is greater than the concentration threshold and the air pressure value is less than the air pressure threshold, the opening adjustment component is controlled to increase the opening; when the concentration value is less than the concentration threshold and the air pressure value is greater than the air pressure threshold, the opening adjustment component is controlled to decrease the opening.

[0017] Optionally, when the concentration value is greater than the concentration threshold and the gas pressure value is less than the gas pressure threshold, the method further includes:

[0018] If the opening of the opening adjustment component is increased to 100%, and the concentration value is still greater than the concentration threshold and the air pressure value is still less than the air pressure threshold, then the exhaust power component is controlled to increase its operating power.

[0019] When the concentration value is less than the concentration threshold and the gas pressure value is greater than the gas pressure threshold, controlling the opening adjustment component to reduce the opening further includes:

[0020] When the opening of the opening adjustment component is reduced to such that the concentration value and the gas pressure value are within the range of the concentration threshold and the gas pressure threshold, respectively, the flow rate of the gas in the transmission pipeline is detected and recorded.

[0021] Optionally, if the opening of the opening adjustment component is increased to 100%, and the concentration value is still greater than the concentration threshold and the air pressure value is still less than the air pressure threshold, the method further includes: issuing a first alarm signal;

[0022] If the concentration value and the air pressure value are greater than or less than the concentration threshold and the air pressure threshold, respectively, a second alarm signal is issued.

[0023] This invention provides an odor transmission control system and method, the advantages of which are as follows: the odor transmission control system is equipped with a parameter detection component, an opening adjustment component, and an exhaust power component in the transmission pipeline. The parameter detection component can detect the gas flow rate, concentration, and pressure values ​​through a gas flow rate sensor, a gas concentration sensor, and a pressure sensor, respectively. Based on these detection results, the opening adjustment component and the exhaust power component are dynamically controlled. This not only makes the control more flexible and precise, which is conducive to the efficient execution of subsequent deodorization processes, but also enables automated control and improves reliability.

[0024] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0025] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0026] Figure 1 A schematic diagram of an odor transmission control system according to an embodiment of the present invention is shown.

[0027] Figure 2 A schematic diagram of the structure of an aperture valve in an odor transmission control system according to an embodiment of the present invention is shown.

[0028] Figure 3 A schematic diagram comparing the flow resistance curves of a sector-shaped control valve and an aperture valve is shown.

[0029] Figure 4 A schematic diagram of the gas flow line of a sector control valve at 70% opening is shown.

[0030] Figure 5 A schematic diagram of the gas flow line is shown when the aperture valve is open at 70%.

[0031] Figure 6 A flowchart of an odor transmission control method according to an embodiment of the present invention is shown.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Transmission pipeline; 2. Exhaust power unit; 3. Opening adjustment unit; 4. Gas flow rate sensor; 5. Gas concentration sensor; 6. Gas pressure sensor; 7. First control unit; 8. Second control unit; 9. Arc-shaped fan blades; 10. Electric drive mechanism; 11. Sealing cover. Detailed Implementation

[0034] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0035] like Figure 1 As shown, the present invention provides an odor transmission control system, the system comprising:

[0036] Transmission pipeline 1, along the direction from upstream to downstream, is provided with exhaust power component 2, opening adjustment component 3 and parameter detection component, the parameter detection component including gas flow rate sensor 4, gas concentration sensor 5 and gas pressure sensor 6.

[0037] The control unit is electrically connected to the exhaust power component 2, the opening adjustment component 3, and the parameter detection component. The control unit is used to control the opening adjustment component 3 and the exhaust power component 2 according to the detection results of the parameter detection component.

[0038] Specifically, to address the shortcomings of existing odor transmission systems in controlling gas concentration and pressure during odor transmission, which makes it difficult to achieve flexible and precise control of the odor transmission process through adjustment of the sector-shaped regulating valve, thus hindering subsequent deodorization processes; furthermore, the manual adjustment of the sector-shaped regulating valve's opening degree is highly dependent on the operator's skill level and sense of responsibility. The odor transmission control system provided by this invention includes an exhaust power component 2, an opening degree adjustment component 3, and a parameter detection component on the transmission pipeline 1. The parameter detection component can detect the gas flow rate, concentration, and pressure values ​​through a gas flow rate sensor 4, a gas concentration sensor 5, and a pressure sensor 6, respectively. Based on these detection results, it can dynamically control the opening degree adjustment component 3 and the exhaust power component 2. This not only makes the control more flexible and precise, facilitating efficient subsequent deodorization processes, but also enables automated control with improved reliability.

[0039] Optionally, the exhaust power component 2 includes a fan.

[0040] Specifically, the fan is a variable frequency fan.

[0041] Optionally, the opening adjustment component 3 includes an aperture valve.

[0042] Specifically, using an aperture valve as the opening adjustment component 3 not only saves space but also reduces flow resistance and achieves better flow field conditions.

[0043] In the prior art, the wind resistance generated by the sector-shaped regulating valve after it is installed on the transmission pipeline 1 accounts for about 10% of the total wind resistance of the transmission pipeline 1. Due to the influence of structure and pipeline airflow, the sector-shaped regulating valve has disadvantages such as poor sealing, noise, and easy deformation. Furthermore, if the sector-shaped regulating valve is in a state of large throttling amplitude, cavitation is likely to occur on the back of the valve plate, which may damage the valve.

[0044] In this embodiment, an aperture valve is used to adjust the opening, such as... Figure 2 As shown, the valve body of the aperture valve is disc-shaped with a circular cross-section, including a metal outer ring and multiple arc-shaped fan blades 9. The metal outer ring has rotating shafts for the multiple arc-shaped fan blades 9. These arc-shaped fan blades 9 partially overlap and rotate around the rotating shafts on the metal outer ring. Rotating the operating ring on the metal outer ring allows the multiple arc-shaped fan blades 9 to engage and disengage. The multiple arc-shaped fan blades 9 first engage and disengage at the center of the cross-section of the transmission pipeline 1, with the opening diameter resembling a circular hole. The engagement and disengagement of the multiple arc-shaped fan blades 9 is similar to the expansion and contraction of a circular hole, with the engagement degree ranging from fully closed to fully open. In the fully open state, a ventilation hole of the same size as the diameter of the transmission pipeline 1 is formed. This structure reduces the air resistance of the gas in the transmission pipeline 1, and changing the size of the central ventilation hole adjusts the ventilation volume at that point. By incorporating the aperture valve, sealing performance is improved, noise is reduced, deformation is minimized, cavitation is reduced, and service life is extended.

[0045] Optionally, an electric drive mechanism 10 is connected to the aperture valve, which is used to drive the aperture valve to change its opening degree.

[0046] Specifically, the electric drive mechanism 10 can drive the aperture valve to change its opening degree. In this embodiment, the electric drive mechanism 10 includes a drive motor, and a first gear is provided on the output end of the drive motor. An outer gear ring that meshes with the first gear is provided on the outer periphery of the operating ring on the metal outer ring of the aperture valve. By driving the rotation of the first gear through the drive motor, the operating ring can be rotated, thereby adjusting the opening degree of the aperture valve.

[0047] In another embodiment, a manual adjustment mechanism is also included. The manual adjustment mechanism includes a second gear and a knob. The second gear meshes with the outer gear ring on the outer periphery of the operating ring on the metal outer ring of the aperture valve. The knob can drive the second gear to rotate, thereby adjusting the opening degree of the aperture valve. Furthermore, the outer periphery of the knob is provided with a scale indicating the opening degree, and the knob is provided with an indicator line. The two work together to intuitively understand the amount of adjustment of the opening degree by rotating the knob.

[0048] In this embodiment, taking a transmission pipeline 1 with a diameter of 150mm as an example, a sector-shaped regulating valve used in the prior art and an aperture valve of the present invention are respectively set in the middle of a transmission pipeline 1. The valve plate of the sector-shaped regulating valve rotates around its rotation axis at different angles to change its opening. The comparison results are as follows:

[0049] 1. Flow resistance

[0050] To compare the flow resistance of the sector control valve and the aperture valve, the volumetric flow rate at the inlet of transmission line 1 was 150 m³ / s. 3 The following table shows the flow rate and flow resistance under the / h condition:

[0051]

[0052] A comparison of the flow resistance curves of the two, such as Figure 3 As shown.

[0053] 2. Gas streamlines

[0054] To compare the gas streamlines of the sector-shaped control valve and the aperture valve, the opening was set to 70%. The gas streamline diagrams are as follows: Figure 4 and Figure 5 As shown in the figure, the windward and leeward sides of the fan-shaped regulating valve have significant pressure differences, resulting in flow around and vortices, with a maximum velocity of about 4.6 m / s, creating significant flow resistance. In contrast, the smooth flow of the aperture valve is relatively smooth, without the formation of significant vortices, and the maximum flow velocity is about 4.0 m / s, with a flow resistance about 8% lower than that of the fan-shaped valve.

[0055] Optionally, the control unit includes a first control unit 7 and a second control unit 8. The first control unit 7 is electrically connected to the gas concentration sensor 5, the gas pressure sensor 6 and the opening adjustment component 3. The first control unit 7 is used to control the opening of the opening adjustment component 3 according to the concentration value and gas pressure value detected by the gas concentration sensor 5 and the gas pressure sensor 6.

[0056] Specifically, the second control unit 8 can serve as the superior control unit of the first control unit 7, and the first control unit 7 controls the opening adjustment component 3 as the subordinate control unit.

[0057] Optionally, the second control unit 8 is electrically connected to the first control unit 7 and the exhaust power component 2. The second control unit 8 is used to receive control information from the first control unit 7 and control the power of the exhaust power component 2.

[0058] Specifically, the second control unit 8 controls the exhaust power component 2 as the upper-level regulator. When regulating, the lower-level regulator is first implemented through the first control unit 7 and the opening adjustment component 3. When the lower-level regulator cannot meet the regulation requirements, the upper-level regulator is implemented through the second control unit 8 and the exhaust power component 2. This increases the number of regulation levels, reduces the number of regulation times and complexity, and improves the regulation effect.

[0059] Optionally, it also includes a first alarm unit and a second alarm unit, which are electrically connected to the first control unit 7 and the second control unit 8, respectively.

[0060] Specifically, the first alarm unit and the second alarm unit can be independent audible and visual alarms.

[0061] like Figure 6 As shown, the present invention also provides an odor transmission control method, based on the above-described odor transmission control system, the method comprising:

[0062] Set concentration thresholds and air pressure thresholds;

[0063] Detect the concentration and pressure of the gas in transmission pipeline 1;

[0064] The opening adjustment component 3 is controlled based on the comparison results of the concentration value and the air pressure value with the concentration threshold and the air pressure threshold, respectively. When the concentration value is greater than the concentration threshold and the air pressure value is less than the air pressure threshold, the opening adjustment component 3 is controlled to increase the opening; when the concentration value is less than the concentration threshold and the air pressure value is greater than the air pressure threshold, the opening adjustment component 3 is controlled to decrease the opening.

[0065] Specifically, while setting the concentration threshold and the pressure threshold, the initial opening of the opening adjustment component 3 can also be set. In this embodiment, the initial opening can be set to 50%. Then, the exhaust power component 2 is started to exhaust the air. After the system runs stably, the parameter detection component detects the concentration value and pressure value of the gas in the transmission pipeline 1. The concentration value and pressure value are then compared with the concentration threshold and the pressure threshold, respectively. The opening adjustment component 3 is controlled according to the comparison result.

[0066] Optionally, when the concentration value is greater than a concentration threshold and the pressure value is less than a pressure threshold, the method further includes:

[0067] If the opening of the opening adjustment component 3 is increased to 100%, and the concentration value is still greater than the concentration threshold and the air pressure value is still less than the air pressure threshold, then the exhaust power component 2 is controlled to increase its operating power.

[0068] When the concentration value is less than the concentration threshold and the air pressure value is greater than the air pressure threshold, controlling the opening adjustment component 3 to reduce the opening further includes:

[0069] When the opening of the opening adjustment component 3 is reduced to such that the concentration value and the gas pressure value are within the range of the concentration threshold and the gas pressure threshold, respectively, the flow rate of the gas in the transmission pipeline 1 is detected and recorded.

[0070] Specifically, the adjustment of the opening of the opening adjustment component 3 is a lower-level control and is given priority. The adjustment of the operating power of the exhaust power component 2 is a higher-level control. The higher-level control is only initiated when the opening of the opening adjustment component 3 is increased to 100%, the concentration value is still greater than the concentration threshold, and the air pressure value is still less than the air pressure threshold. This increases the control levels, reduces the number of control operations and the complexity of control, and improves the control effect.

[0071] Furthermore, since the air volume in the transmission pipeline is determined by calculation based on the airflow velocity and the diameter of the airflow cross section, the function of detecting the velocity value is to determine the air volume of odor transmission in conjunction with the opening of the opening adjustment component. Moreover, by recording the velocity value and the obtainable air volume value, basic data can be used for reference when adjusting the opening of the opening adjustment component later, thereby enabling more precise control of the opening adjustment component and the exhaust power component.

[0072] Optionally, if the opening of the opening adjustment component 3 is increased to 100%, and the concentration value is still greater than the concentration threshold and the gas pressure value is still less than the gas pressure threshold, the method further includes: issuing a first alarm signal;

[0073] If the concentration value and the air pressure value are greater than or less than the concentration threshold and the air pressure threshold, respectively, a second alarm signal will be issued.

[0074] Specifically, when the opening of the opening adjustment component 3 is increased to 100%, and the concentration value is still greater than the concentration threshold and the air pressure value is still less than the air pressure threshold, the first alarm unit issues a first alarm signal, and the first control unit 7 transmits the control signal to the second control unit 8, which then controls the exhaust power component 2 to increase its operating power. During the exhaust process, if the concentration value and air pressure value are greater than or less than the concentration threshold and air pressure threshold, respectively, the first control unit 7 sends an alarm feedback to the second control unit 8, which then controls the second alarm unit to issue a second alarm signal, reminding the operator or staff to check the odor transmission system or adjust the parameter settings.

[0075] In this embodiment, the upstream end of the transmission pipeline 1 is connected to the sealing cover 11 for storing odorous gas, the gas concentration sensor 5 and the gas pressure sensor 6 are disposed inside the sealing cover 11, and the gas flow rate sensor 4 is disposed on the transmission pipeline 1.

[0076] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A method for controlling odor transmission, utilizing an odor transmission control system, characterized in that, The system includes: The transmission pipeline is provided with a parameter detection component, an opening adjustment component, and an exhaust power component in sequence from upstream to downstream. The parameter detection component includes a gas flow rate sensor, a gas concentration sensor, and a gas pressure sensor. The control unit is electrically connected to the exhaust power component, the opening adjustment component, and the parameter detection component. The control unit is used to control the opening adjustment component and the exhaust power component according to the detection result of the parameter detection component. The method includes: Set concentration thresholds and pressure thresholds; Detect the concentration and pressure of the gas in the transmission pipeline; The opening adjustment component is controlled based on the comparison results of the concentration value and the air pressure value with the concentration threshold and the air pressure threshold, respectively. When the concentration value is greater than the concentration threshold and the air pressure value is less than the air pressure threshold, the opening adjustment component is controlled to increase the opening; when the concentration value is less than the concentration threshold and the air pressure value is greater than the air pressure threshold, the opening adjustment component is controlled to decrease the opening.

2. The odor transmission control method according to claim 1, characterized in that, The exhaust power component includes a fan.

3. The odor transmission control method according to claim 1, characterized in that, The opening adjustment component includes an aperture valve.

4. The odor transmission control method according to claim 3, characterized in that, An electric drive mechanism is connected to the aperture valve, which is used to drive the aperture valve to change its opening degree.

5. The odor transmission control method according to claim 1, characterized in that, The control unit includes a first control unit and a second control unit. The first control unit is electrically connected to the gas concentration sensor, the gas pressure sensor and the opening adjustment component. The first control unit is used to control the opening of the opening adjustment component according to the concentration value and the gas pressure value detected by the gas concentration sensor and the gas pressure sensor.

6. The odor transmission control method according to claim 5, characterized in that, The second control unit is electrically connected to the first control unit and the exhaust power component. The second control unit is used to receive control information from the first control unit and control the power of the exhaust power component.

7. The odor transmission control method according to claim 6, characterized in that, It also includes a first alarm unit and a second alarm unit, which are electrically connected to the first control unit and the second control unit, respectively.

8. The odor transmission control method according to claim 1, characterized in that, When the concentration value is greater than the concentration threshold and the air pressure value is less than the air pressure threshold, the method further includes: If the opening of the opening adjustment component is increased to 100%, and the concentration value is still greater than the concentration threshold and the air pressure value is still less than the air pressure threshold, then the exhaust power component is controlled to increase its operating power. When the concentration value is less than the concentration threshold and the air pressure value is greater than the air pressure threshold, controlling the opening adjustment component to reduce the opening further includes: When the opening of the opening adjustment component is reduced to such that the concentration value and the gas pressure value are within the range of the concentration threshold and the gas pressure threshold, respectively, the flow rate of the gas in the transmission pipeline is detected and recorded.

9. The odor transmission control method according to claim 8, characterized in that, If the opening of the opening adjustment component is increased to 100%, and the concentration value is still greater than the concentration threshold and the air pressure value is still less than the air pressure threshold, the method further includes: issuing a first alarm signal; If the concentration value and the air pressure value are greater than or less than the concentration threshold and the air pressure threshold, respectively, a second alarm signal is issued.

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