Mobile array poultry house ammonia removal device and method

Abstract

This invention relates to a mobile array poultry house ammonia removal device and method. The device includes a mobile support base, an integrated processing platform, an ammonia removal unit, and a negative pressure airflow system. The mobile support base is constructed from a metal support substrate and a polytetrafluoroethylene (PTFE) insulating layer. The integrated processing platform is fixed to the upper part of the insulating layer and includes an air intake channel, a mobile power supply, a central control system, and an actuator storage chamber. The ammonia removal unit is a multi-module parallel three-electrode nanosecond pulse sliding dielectric barrier discharge actuator group, arranged in an array on the integrated processing platform. The discharge area of ​​the discharge actuator group is coupled to the airflow channel of the air intake channel. The negative pressure airflow system includes an air outlet duct and an exhaust fan, which work together. The central control system is integrated into the integrated processing platform, capable of real-time sensing of environmental concentration, dynamic adjustment of operational intensity, and modular autonomous maintenance capabilities.

Description

Technical Field

[0001] This invention relates to the field of poultry house environmental management technology, and in particular to a mobile array poultry house ammonia removal device and method. Background Technology

[0002] In large-scale poultry farming, nitrogen-containing organic matter such as livestock and poultry manure rapidly decomposes under the action of microorganisms, producing large amounts of ammonia (NH3). Ammonia not only irritates the respiratory mucosa of livestock and poultry, reduces immunity and production performance, but also harms the health of farmers and causes air pollution in the surrounding environment. Current ammonia treatment technologies in poultry houses mainly rely on mechanical ventilation, biological filtration, and chemical spraying, but these have significant limitations in practical applications. Mechanical ventilation only achieves the discharge of ammonia, which can easily cause regional pollution spread; biological filtration relies on microbial metabolism, is greatly affected by temperature and humidity, has unstable treatment efficiency, and requires a large area; chemical spraying consumes high amounts of chemicals and is prone to secondary pollution.

[0003] Furthermore, traditional ammonia removal equipment often uses a fixed installation layout, which cannot adapt to the uneven spatial distribution of ammonia concentration in poultry houses, resulting in blind spots and making precise targeted treatment difficult. Simultaneously, these devices generally operate with a constant discharge frequency. When ammonia concentration is low, high-frequency discharge leads to significant energy waste and generates excessive ozone and other byproducts; when ammonia concentration suddenly increases, the fixed power output cannot meet the demand for efficient degradation, resulting in substandard purification. In addition, discharge actuators are prone to aging, scaling, and failure in the high humidity, dust, and corrosive environment of poultry houses. Existing equipment lacks online real-time performance evaluation and intelligent early warning mechanisms, relying solely on manual periodic inspections or experience-based replacement. This can easily lead to delayed maintenance causing a sharp drop in purification efficiency, or excessive maintenance resulting in resource waste, failing to guarantee the continuity and stability of ammonia removal effects.

[0004] Therefore, traditional ammonia treatment technologies for poultry houses often suffer from limited coverage and poor treatment effects due to their fixed layout, constant control, and reliance on manual operation and maintenance. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, a mobile array poultry house ammonia removal device and method are provided, which can sense the environmental concentration in real time, dynamically adjust the operation intensity and have modular autonomous maintenance capabilities.

[0006] A mobile array poultry house ammonia removal device, the device comprising a mobile support base, an integrated processing platform, an ammonia removal unit, and a negative pressure airflow system, wherein:

[0007] The movable support base is composed of a metal support substrate and a polytetrafluoroethylene insulating layer, and the insulating layer is laid on the upper surface of the metal support substrate.

[0008] The integrated processing platform is fixed on the upper part of the insulating layer. The integrated processing platform includes an air intake channel, a mobile power supply, a general program control system, and an actuator storage chamber.

[0009] The ammonia removal unit is a multi-module parallel three-electrode nanosecond pulse sliding dielectric barrier discharge actuator group, which is arranged in an array on the integrated processing platform. The discharge area of ​​the discharge actuator group is coupled with the airflow channel of the intake channel.

[0010] The negative pressure airflow system includes an air outlet pipe and an exhaust fan. The air outlet pipe and the exhaust fan work together to introduce the poultry house air into the discharge area through the air inlet channel and discharge the purified gas through the discharge actuator group.

[0011] The overall program control system is integrated into the integrated processing platform, which is used to monitor ammonia concentration in real time, adaptively adjust discharge parameters, and execute failure warnings and replacement prompts.

[0012] In one embodiment, each discharge actuator in the discharge actuator group is composed of three electrode units connected in parallel. Each three electrode unit includes a high-voltage electrode, a ground electrode, and an auxiliary electrode for inducing the generation and extension of a slip arc. Furthermore, each discharge actuator is removable and replaceable using a standardized quick-connect interface.

[0013] In one embodiment, the actuator storage chamber pre-stores at least one spare actuator unit that matches the standardized quick-connect interface. The spare actuator unit is installed on the integrated processing platform in a modular quick-connect manner for replacement when the ammonia removal unit fails.

[0014] In one embodiment, the overall program control system includes:

[0015] An ammonia concentration detection module is installed at the inlet and outlet of the air intake channel to obtain the inlet ammonia concentration and the outlet ammonia concentration.

[0016] A frequency adaptive adjustment module is used to dynamically adjust the nanosecond pulse discharge frequency output by the mobile power supply to the discharge actuator group according to the inlet ammonia concentration.

[0017] The status monitoring and early warning module is used to calculate the real-time ammonia removal efficiency based on the inlet ammonia concentration and the outlet ammonia concentration, and to generate an actuator replacement prompt when the ammonia removal efficiency is lower than a preset threshold.

[0018] A method for removing ammonia from a mobile array poultry house, the method comprising:

[0019] Real-time collection of inlet ammonia concentration at the inlet of the air intake channel and outlet ammonia concentration after purification at the outlet duct.

[0020] Based on the inlet ammonia concentration, the target discharge frequency is determined by a preset quantization control function, and the mobile power supply is controlled to output nanosecond pulses to the actuator at the target discharge frequency to complete the adaptive adjustment of the nanosecond pulse discharge frequency.

[0021] The ammonia removal efficiency is calculated in real time based on the inlet ammonia concentration and the outlet ammonia concentration.

[0022] When the ammonia removal efficiency is lower than a preset threshold, the actuator is determined to be faulty, a replacement prompt is triggered, and a backup actuator group is called to complete the actuator replacement.

[0023] In one embodiment, the method further includes:

[0024] Real-time monitoring of the gradient of inlet ammonia concentration over time;

[0025] When the change gradient exceeds a preset change rate threshold, the target discharge frequency is adjusted in advance based on the change gradient.

[0026] In one embodiment, when the ammonia removal efficiency is lower than a preset threshold, the actuator is determined to be faulty, a replacement prompt is triggered, and a backup actuator group is invoked to replace the actuator, including:

[0027] When the ammonia removal efficiency is continuously lower than the preset threshold for a period of time exceeding the preset duration, the actuator is determined to be faulty, and an actuator replacement command is output.

[0028] Determine the number of failed actuators, calculate whether the remaining effective actuators meet the minimum ammonia removal capacity requirement, and if not, output a shutdown maintenance command for the entire machine.

[0029] In one embodiment, the method further includes:

[0030] When the ammonia removal efficiency is lower than a preset threshold and a spare actuator is available in the actuator storage chamber, an indication message is output.

[0031] The instruction information is used to prompt the operator to retrieve a spare actuator from the actuator storage compartment to replace the failed actuator;

[0032] After the actuator is replaced, perform a self-test and resume operation.

[0033] In one embodiment, the method further includes:

[0034] Based on the ammonia removal efficiency, the average ammonia removal efficiency and total running time are recorded within a preset time period.

[0035] When the average ammonia removal efficiency shows a monotonically decreasing trend and the rate of decrease exceeds a preset rate threshold, a preventative maintenance prompt is output, suggesting that the actuator be cleaned or replaced.

[0036] In one embodiment, the method further includes:

[0037] When the outlet ammonia concentration continues to rise within a preset time and exceeds the safe emission threshold, regardless of whether the ammonia removal efficiency is lower than the preset threshold, an emergency shutdown will be performed and an audible and visual alarm will be issued, while the operating data at the time of the fault will be recorded.

[0038] The aforementioned mobile array ammonia removal device and method for poultry houses utilizes a mobile support base composed of a metal support substrate and a polytetrafluoroethylene insulation layer. This ensures both the overall structural strength and vehicle-mounted stability of the device, while also achieving reliable electrical insulation between the high-voltage discharge section and the metal base, thus enhancing the safety of mobile operations. Integrating the air intake channel, mobile power supply, overall program control system, and actuator storage chamber onto a single platform results in a compact device structure, facilitating flexible movement and deployment within the poultry house. The array-type multi-module parallel three-electrode nanosecond pulse sliding dielectric barrier discharge actuator group is directly coupled to the airflow channel, increasing the plasma action area and improving ammonia degradation efficiency and processing air volume. A negative pressure airflow system, formed by the outlet pipe and exhaust fan, stably guides the polluted air in the poultry house to flow directionally through the discharge area, ensuring sufficient contact between the airflow and plasma and improving purification uniformity. The overall program control system enables real-time monitoring of ammonia concentration, adaptive adjustment of discharge parameters, and actuator failure warnings and replacement reminders. This allows the device to dynamically adjust its operating intensity based on ammonia concentration, while also providing timely maintenance reminders, ensuring long-term stable ammonia removal performance. Attached Figure Description

[0039] Figure 1 This is a frontal view structural schematic diagram of a mobile array poultry house ammonia removal device in one embodiment;

[0040] Figure 2 This is a schematic diagram of the rear view of a mobile array poultry house ammonia removal device in one embodiment;

[0041] Figure 3 This is a partial cross-sectional schematic diagram of a mobile array poultry house ammonia removal device in one embodiment;

[0042] Figure 4 This is a schematic flowchart of a mobile array poultry house ammonia removal method in one embodiment;

[0043] Figure 5 This is a schematic diagram of the system execution flow of a mobile array poultry house ammonia removal method in one embodiment. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0045] In one embodiment, such as Figure 1-3 As shown, a mobile array poultry house ammonia removal device is provided, including: a mobile support base, an integrated processing platform, an ammonia removal unit 300, and a negative pressure airflow system. The mobile support base is composed of a metal support substrate 110 and a polytetrafluoroethylene (PTFE) insulation layer 120, with the insulation layer 120 laid on the upper surface of the metal support substrate 110. The integrated processing platform is fixed on the upper part of the insulation layer 120 and includes an air intake channel 210, a mobile power supply 220, a general program control system 230, and an actuator storage chamber 240. The ammonia removal unit 300 is a multi-module parallel three-electrode nanosecond pulse... The sliding dielectric barrier discharge actuator group is arranged in an array on the integrated processing platform. The discharge area of ​​the discharge actuator group is coupled with the airflow channel of the air intake channel 210. The negative pressure airflow system includes an air outlet pipe 410 and an exhaust fan 420. The air outlet pipe 410 and the exhaust fan 420 cooperate with each other to introduce the poultry house air into the discharge area through the air intake channel 210, and then discharge the purified gas through the discharge actuator group. The overall program control system 230 is integrated into the integrated processing platform to monitor the ammonia concentration in real time, adaptively adjust the discharge parameters, and perform failure warnings and replacement prompts.

[0046] The metal support substrate 110 can be an iron plate, such as ordinary carbon structural steel or galvanized steel plate, serving as a physical support and load-bearing balance to ensure sufficient mechanical strength and resistance to deformation. Its thickness can be set according to the overall weight and load-bearing requirements of the device. The polytetrafluoroethylene insulation layer 120 can be 2mm–5mm thick, with a breakdown voltage greater than 20kV / mm. It is used to isolate the electrical connection between the high-voltage discharge system in the integrated processing platform and the metal support substrate 110, ensuring electrical insulation safety, preventing high voltage leakage to the vehicle body or the ground, and ensuring the electrical safety of the device in motion.

[0047] An integrated processing platform, fixed above a polytetrafluoroethylene (PTFE) insulation layer 120, includes an air intake channel 210, a mobile power supply 220, a central program control system 230, and an actuator storage chamber 240. The air intake channel 210 is made of corrosion-resistant and ozone-resistant engineering plastics (such as polypropylene or PTFE), with its inlet extending to the poultry house air extraction area and its outlet sealingly connected to the discharge area of ​​the ammonia removal unit 300. The mobile power supply 220 can employ a high-voltage DC-DC converter in conjunction with a nanosecond pulse generator circuit, with an adjustable peak output voltage of 0-20kV, providing nanosecond-level high-voltage pulse excitation to the ammonia removal unit 300. The central program control system 230 integrates a microcontroller or embedded processor to perform logical functions such as concentration acquisition, frequency calculation, status monitoring, and early warning output.

[0048] In one embodiment, the actuator storage chamber 240 pre-stores at least one spare actuator unit that matches a standardized quick-connect interface. The spare actuator unit is installed on the integrated processing platform in a modular quick-connect manner for replacement when the ammonia removal unit fails.

[0049] That is, the actuator storage chamber 240 is a sealed chamber that stores at least one spare actuator module that is matched with the interface of the ammonia removal unit 300. The actuator storage chamber 240 can be equipped with a desiccant or vacuum sealed to extend the storage life of the spare actuator.

[0050] The ammonia removal unit 300, located on the integrated processing platform, is an array-type three-electrode nanosecond pulse sliding dielectric barrier discharge actuator group. The discharge end of the actuator group is coupled to the flow channel of the intake passage. The array-type three-electrode actuator group consists of 5×5 modular units, each of which is connected to the main circuit via a quick-connect interface.

[0051] Specifically, in one embodiment, each discharge actuator in the discharge actuator group consists of three electrode units connected in parallel. Each three electrode unit includes a high-voltage electrode, a ground electrode, and an auxiliary electrode for inducing the generation and extension of a slip arc. Each discharge actuator uses a standardized quick-connect interface for easy removal and replacement. A main discharge region for dielectric barrier discharge is formed between the high-voltage electrode and the ground electrode. The third auxiliary electrode is located downstream of the discharge, and by applying an auxiliary electric field, it induces the main discharge arc to slip and stretch along the airflow direction, thereby forming a slip dielectric barrier discharge. Multiple discharge actuator units can be arranged in a matrix, with each unit connected in parallel to the output terminal of the mobile power supply 220. The discharge region is coupled to the airflow channel of the intake channel 210, allowing the flowing gas to fully pass through the high-density plasma region on the surface of each discharge unit, thereby increasing the collision probability of ammonia molecules with active free radicals.

[0052] The negative pressure exhaust system includes an air outlet duct 410 and an exhaust fan 420 installed inside it, used to guide poultry house air from the air intake channel 210 and flow through the actuator assembly. In the negative pressure airflow system, the exhaust fan 420 can be an axial flow fan or a centrifugal fan, installed inside the air outlet duct 410, and its air volume is determined according to the poultry house area and ammonia generation rate. The outlet end of the air outlet duct 410 can extend to the outside of the poultry house or a recirculating air system. During operation, the exhaust fan 420 runs continuously, creating a negative pressure at the inlet of the air intake channel 210, drawing in air containing ammonia from the poultry house, which then flows sequentially through the air intake channel 210 and the discharge area of ​​the ammonia removal unit 300. After low-temperature plasma decomposition, the purified gas is discharged through the air outlet duct 410.

[0053] In one embodiment, the overall program control system includes: an ammonia concentration detection module, installed at the inlet and outlet of the air intake channel, respectively, for acquiring the inlet ammonia concentration and the outlet ammonia concentration; a frequency adaptive adjustment module, for dynamically adjusting the nanosecond pulse discharge frequency output by the mobile power supply to the discharge actuator group according to the inlet ammonia concentration; and a status monitoring and early warning module, for calculating the real-time ammonia removal efficiency based on the inlet and outlet ammonia concentrations, and generating an actuator replacement prompt when the ammonia removal efficiency is lower than a preset threshold.

[0054] The overall program control system 230 is connected to at least two ammonia concentration sensors, installed at the inlet of the air inlet channel 210 and the outlet of the air outlet duct 410, respectively, to collect the inlet and outlet ammonia concentrations in real time. Based on the inlet ammonia concentration, the overall program control system 230 dynamically calculates the target discharge frequency using a built-in quantization control function (such as an S-shaped response function) and controls the mobile power supply 220 to output nanosecond pulses to the ammonia removal unit 300 at that frequency. Simultaneously, the overall program control system 230 calculates the ammonia removal efficiency in real time. When the ammonia removal efficiency remains below a preset threshold (e.g., 10%), it determines that the actuator assembly has suffered performance degradation due to dust accumulation, aging, or damage. It then outputs a replacement command via audible and visual alarms, display screen prompts, or a remote communication interface. Operators can retrieve a spare actuator module from the actuator storage chamber 240 and perform modular quick-connect replacement of the failed unit.

[0055] The mobile array poultry house ammonia removal device provided in this application embodiment includes, from bottom to top, an iron plate base, a polytetrafluoroethylene (PTFE) insulation layer, and an integrated processing platform; the integrated processing platform is provided with an air intake channel, a mobile power supply, a general program control system, and an actuator storage chamber; the ammonia removal unit is an array-type three-electrode nanosecond pulse sliding dielectric barrier discharge actuator. By employing a mobile support base composed of a metal support substrate and a polytetrafluoroethylene insulation layer, the overall structural strength and vehicle-mounted mobility of the device are ensured, while reliable electrical insulation between the high-voltage discharge section and the metal base is achieved, enhancing the safety of mobile operations. The air intake channel, mobile power supply, overall program control system, and actuator storage chamber are integrated onto a single platform, resulting in a compact structure that facilitates flexible movement and deployment within poultry houses. The array-type multi-module parallel three-electrode nanosecond pulse sliding dielectric barrier discharge actuator group is directly coupled to the airflow channel, increasing the plasma interaction area and improving ammonia degradation efficiency and processing air volume. A negative pressure airflow system, composed of an outlet duct and an exhaust fan, stably guides polluted air from the poultry house through the discharge area, ensuring sufficient contact between the airflow and plasma and improving purification uniformity. The overall program control system enables real-time monitoring of ammonia concentration, adaptive adjustment of discharge parameters, and actuator failure warnings and replacement reminders, allowing the device to dynamically adjust its operating intensity based on ammonia concentration and providing timely maintenance reminders to ensure long-term stable ammonia removal performance.

[0056] In this application, a mathematical model based on chemical reaction kinetics and energy injection principles is established to realize the effect of discharge frequency f on inlet ammonia concentration C. in The precise response. The derivation process is as follows:

[0057] (1) Relationship between reaction rate and energy density: In a low-temperature plasma reactor, the decomposition rate of ammonia molecules follows a first-order reaction kinetic model. Let the decrease in ammonia per unit time and unit volume be: (1); where k is the apparent reaction rate constant; studies have shown that k is proportional to the specific energy input (SEI) of the injected system: (2); where P is the total discharge power and Q is the intake flow rate. It is a proportionality constant affected by electrode geometry and gas composition.

[0058] (2) Relationship between power and pulse frequency: For a nanosecond pulse power supply, the energy E injected in a single pulse is p When the voltage amplitude is fixed and approximately constant, the total power can be expressed as: Substituting (3) into (2), we get: .

[0059] (3) Concentration mapping under steady state: According to the ideal reactor model, let the effective volume of the reaction zone be V, and the residence time be V. Export concentration C out With inlet concentration C in The relationship is: .

[0060] (4) Target-oriented frequency control function: In order to ensure that the treated concentration meets the emission standard C limit , making C out <C limit Solve equation (5) for the terms with respect to f: Define constant terms (Determined by hardware system parameters), the basic control logic is a logarithmic relationship.

[0061] (5) Practical engineering correction (adaptive quantization function): Considering that the power supply system has an initial discharge frequency f min and saturation protection frequency f max To address the nonlinear fluctuations in the poultry house environment, a modified sigmoid-based control function is adopted: Where λ is the gain coefficient, which determines the sensitivity of the frequency to changes in concentration; C threshold With the preset concentration response threshold center point, the adaptive quantization function ensures that basic cruise discharge is maintained at low concentrations, linear response is maintained in the medium and high concentration range, and power output is limited to protect the hardware under high concentration loads.

[0062] In one embodiment, such as Figure 4 As shown, a method for removing ammonia from a mobile array poultry house is provided, including the following steps:

[0063] Step 402: Real-time collection of inlet ammonia concentration at the inlet of the air intake channel and outlet ammonia concentration after purification at the outlet duct.

[0064] The overall program control system can collect the inlet ammonia concentration C at the inlet of the air intake channel in real time. in And the concentration of ammonia gas C at the outlet duct after purification out .

[0065] Specifically, the overall program control system continuously acquires real-time concentration data through two ammonia concentration sensors installed at the inlet of the air intake channel and the outlet of the air outlet duct, respectively, at a preset sampling frequency (e.g., 1 to 10 times per second). The collected inlet ammonia concentration C in This reflects the current ammonia pollution load in the air awaiting treatment in the poultry house, while the outlet ammonia concentration C outThis reflects the residual ammonia concentration after low-temperature plasma treatment. Both concentration data are transmitted in real-time to the data processing unit of the overall program control system, serving as the basis for subsequent frequency adjustment and efficiency evaluation.

[0066] Step 404: Based on the inlet ammonia concentration, the target discharge frequency is determined through a preset quantization control function, and the mobile power supply is controlled to output nanosecond pulses to the actuator at the target discharge frequency, thus completing the adaptive adjustment of the nanosecond pulse discharge frequency.

[0067] The overall program control system can be based on the inlet ammonia concentration C in The discharge frequency f of the mobile power bank is automatically mapped and adjusted through a preset quantization control function.

[0068] Specifically, the overall program control system has a pre-calibrated quantization control function built in, which establishes the inlet ammonia concentration C. in The mapping relationship between the current C and the target discharge frequency f. When the system acquires the current C... in After obtaining the value, it is immediately substituted into the function to calculate the corresponding target frequency f, and the mobile power supply is controlled to output nanosecond-level high-voltage pulses to the array-type three-electrode actuator group at this frequency.

[0069] This adjustment process is real-time and continuous, allowing the discharge intensity to dynamically follow changes in ammonia concentration: when the concentration increases, the discharge frequency automatically increases to increase the yield of active free radicals to cope with higher pollution loads; when the concentration decreases, the discharge frequency automatically decreases to avoid unnecessary energy consumption and excessive generation of ozone byproducts. The core of this step is that the frequency adjustment depends only on the inlet ammonia concentration, not on the subsequently calculated removal efficiency, thus achieving a feedforward rapid response.

[0070] In one embodiment, the quantization control function takes the form of an S-shaped response curve, and its expression is: ;in, The minimum starting frequency (e.g., Hz) required to maintain stable discharge. This is the maximum safe frequency that the power supply or actuator can withstand (e.g., 0Hz). This is the gain coefficient (which controls the sensitivity of frequency to concentration changes). The preset concentration response threshold is the center point. The sigmoid function ensures that the frequency remains constant in the low concentration region. Nearby energy conservation, and in high-concentration areas, the frequency tends to be close to To ensure purification effectiveness, the frequency changes approximately linearly with concentration in the medium concentration range, achieving smooth and stable regulation characteristics.

[0071] In one embodiment, a mobile array poultry house ammonia removal method may further include a process of advance compensation, specifically including: real-time monitoring of the gradient of inlet ammonia concentration over time; when the gradient exceeds a preset rate of change threshold, advance compensation correction of the target discharge frequency is performed based on the gradient.

[0072] The overall program control system can monitor the inlet ammonia concentration C in real time. in The gradient ΔC / Δt changes over time. When a rapid increase in concentration is detected, i.e. the gradient exceeds the preset rate of change threshold, the overall program control system adds a compensation increment to the base frequency calculated by the quantization control function, so that the discharge frequency f is increased in advance to cope with the sudden surge in concentration and avoid instantaneous emission exceeding the standard due to control lag.

[0073] Step 406: Calculate the ammonia removal efficiency in real time based on the inlet ammonia concentration and the outlet ammonia concentration.

[0074] The overall program control system can adjust the inlet ammonia concentration C. in The concentration of ammonia gas at the outlet, C out Calculate the ammonia removal efficiency η in real time.

[0075] Specifically, the overall program control system calculates the current ammonia removal efficiency in real time according to the following formula: η=(C in -C out ) / C in The removal efficiency η reflects the actuator's actual ability to decompose ammonia under current operating conditions. Unlike the inlet concentration used for frequency regulation, the calculated removal efficiency is not used to adjust the discharge frequency but serves as a core indicator for evaluating the actuator's own health status. The system compares the real-time calculated removal efficiency η value with a preset efficiency threshold to determine whether the actuator has experienced performance degradation.

[0076] Step 408: When the ammonia removal efficiency is lower than the preset threshold, the actuator is determined to be faulty, a replacement prompt is triggered, and the backup actuator group is called to complete the actuator replacement.

[0077] When the overall program control system detects that the ammonia removal rate η drops below 10%, it issues a replacement command and replaces the currently failed actuator unit with spare parts from the actuator storage compartment.

[0078] Specifically, the overall program control system continuously monitors and calculates the removal efficiency η. When η is continuously lower than a preset threshold (e.g., 10%) and the duration exceeds a preset confirmation time (e.g., 30 seconds), the overall program control system determines that the current actuator group has lost its effective ammonia removal capability due to dust accumulation, electrode aging, dielectric layer damage, or other reasons.

[0079] In one embodiment, a mobile array poultry house ammonia removal method may further include a process of outputting actuator replacement instructions. The specific process includes: when the ammonia removal efficiency is continuously lower than a preset threshold for a period of time exceeding a preset duration, the actuator is determined to be faulty, and an actuator replacement instruction is output; the number of faulty actuators is determined, and it is calculated whether the current remaining effective actuators meet the minimum ammonia removal capacity requirements. If they do not meet the requirements, a whole machine shutdown maintenance instruction is output.

[0080] In one embodiment, a mobile array poultry house ammonia removal method may further include an actuator replacement process, specifically including: when the ammonia removal efficiency is lower than a preset threshold and a spare actuator is available in the actuator storage chamber, an indication message is output; the indication message is used to prompt the operator to take out the spare actuator from the actuator storage chamber to replace the failed actuator; after the actuator replacement is completed, a self-test is performed and operation is resumed.

[0081] In one embodiment, the overall program control system can record the average ammonia removal efficiency and total running time within a preset time period based on the ammonia removal efficiency; when the average ammonia removal efficiency shows a monotonically decreasing trend and the rate of decrease exceeds a preset rate threshold, it outputs a preventive maintenance prompt, suggesting that the actuator be cleaned or replaced.

[0082] In one embodiment, when the outlet ammonia concentration continues to rise within a preset time and exceeds the safe emission threshold, regardless of whether the ammonia removal efficiency is lower than the preset threshold, the overall program control system can execute an emergency shutdown and issue an audible and visual alarm, while recording the operating data at the time of the fault.

[0083] In other words, the overall program control system performs the following operations:

[0084] First, an actuator replacement instruction is issued to the operator via an audible and visual alarm, a text prompt on the display screen, or a remote communication interface, clearly indicating the location and quantity of the actuator unit that needs to be replaced.

[0085] Secondly, the overall program control system automatically records the time of failure, the concentration data at that time, and the frequency parameters, forming a fault log for subsequent analysis.

[0086] Then, following the instructions, the operator retrieves the pre-stored, interface-matched spare actuator modules from the actuator storage compartment and replaces the failed actuator unit on-site via the modular quick-connect interface. Since each actuator unit uses standardized mechanical and electrical interfaces, the replacement process requires no special tools and can be completed within minutes.

[0087] Finally, after the replacement is completed, the overall program control system automatically executes a self-test program, re-collects the inlet and outlet concentrations and calculates the removal efficiency. Once it confirms that the efficiency has returned to a normal level (e.g., greater than 70%), it automatically resumes normal operation.

[0088] In one embodiment, the preset threshold for the removal efficiency η can be set to 10%. This threshold is determined comprehensively based on the removal efficiency decay curve of the actuator under different aging degrees and the emission standards for poultry houses. When the removal efficiency drops below 10%, it indicates that the actuator has basically lost its ammonia removal capacity. Continued operation will lead to continuous emissions exceeding the standard. At this time, forcibly triggering a replacement prompt is a necessary means to ensure the continuity of the treatment effect.

[0089] In another embodiment, when there is no available backup actuator in the actuator storage chamber, the system outputs a prompt "Please replenish backup actuator" and continues to operate but increases the emission monitoring frequency; if the removal efficiency further drops to a lower threshold (e.g., 5%), the system performs an emergency shutdown protection and can only resume operation after the replacement is completed.

[0090] In one embodiment, the execution flow of the overall program control system in a mobile array poultry house ammonia removal method is as follows: Figure 5 As shown, the specific steps include:

[0091] System initialization: The device is powered on and enters the initial state, ready to execute various control logics;

[0092] Sensor self-test: The system performs a self-test on the ammonia sensor, flow meter, and fan current to confirm that each sensor and actuator is working properly. If the self-test is abnormal, the system can output an alarm signal and suspend operation; if the self-test passes, it will proceed to the next step.

[0093] Start the negative pressure fan: The system controls the negative pressure fan to start, generating negative pressure at the air intake channel inlet, guiding the air in the poultry house through the array actuator area, forming a directional airflow;

[0094] Concentration sensing: An ammonia concentration sensor installed at the inlet of the air intake channel collects the inlet ammonia concentration in real time and transmits the data to the overall program control system;

[0095] Adaptive control: The overall program control system calls the preset quantitative control function to calculate the target discharge frequency based on the current inlet ammonia concentration;

[0096] Command issued: The mobile power supply adjusts the repetition frequency of the nanosecond pulse to the target value according to the calculated target discharge frequency, driving the array actuator to generate low-temperature plasma discharge;

[0097] Real-time performance evaluation: The system calculates the ammonia removal rate in real time based on the inlet and outlet ammonia concentrations, which serves as an evaluation indicator of the actuator's health status.

[0098] Judgment Branch: The system compares the calculated ammonia removal rate with the preset threshold (10%): If the ammonia removal rate is greater than or equal to 10%, it indicates that the actuator is working normally, and the system returns to the "concentration sensing" step to continue the loop; If the ammonia removal rate is less than 10%, it indicates that the actuator performance has degraded to a failure state, and the system enters the abnormal handling logic.

[0099] Anomaly Handling Logic: When an actuator failure is determined, the system performs the following operations in sequence: Audible and Visual Alarm: The audible and visual alarm alerts the operator to the performance degradation of the actuator component; Replacement Instruction: A replacement prompt is output, instructing the operator to retrieve a spare actuator from the actuator storage room for quick plug-and-play replacement; Record Update: The cumulative operating time of the currently failed actuator is recorded, and the maintenance log is updated.

[0100] System shutdown / reset: After the actuator replacement is completed, the system can perform a shutdown or reset operation to re-enter the initialization state and resume normal operation.

[0101] In one embodiment, to verify the practical application effect of the mobile array poultry house ammonia removal device and method provided in this application, a 30-day comparative experiment was conducted at a large-scale broiler farm. The experimental results are as follows:

[0102] 1. Test conditions:

[0103] Experimental subjects: a closed poultry house with an area of ​​1000m² and a stock of approximately 15,000 birds;

[0104] Device parameters: array size 5×5, nanosecond pulse rise time 50ns, single pulse energy 15mJ;

[0105] Control parameters: Let f min =Hz, f max =0Hz, C threshold =25ppm.

[0106] 2. Operation process record:

[0107] Phase 1 (Low Concentration Period): In the early morning, the ammonia concentration in the poultry house is low (about 12 ppm); the system adaptively reduces the frequency to 350 Hz; the measured outlet concentration at this time is 4 ppm, and the ammonia removal rate is 66.7%; at this time, the system energy consumption is only 18% of the rated power, effectively extending the battery life of the mobile power supply.

[0108] Phase Two (High Concentration Period): During midday fecal cleaning, the ammonia concentration rapidly spiked to 45 ppm; the central control system detected the slope abrupt change through a quantization function and quickly increased the pulse frequency to 1850 Hz; the strong gliding discharge generated high-density active free radicals, suppressing the outlet concentration to below 10 ppm, and maintaining a purification efficiency of over 77.8%.

[0109] In this embodiment, the specific ammonia removal effect data table is as follows:

[0110]

[0111] In this embodiment, on the 25th day of the test, due to the accumulation of a large amount of poultry house dust on the actuator surface, the system monitored an inlet concentration of 30 ppm and an outlet concentration of 27.5 ppm, resulting in a calculated removal efficiency η of 8.3% (below the 10% threshold). The system immediately stopped power output and triggered an alarm. The operator, following instructions, retrieved a spare part from the storage room and replaced it. After replacement, the system efficiency immediately recovered to over 75%, verifying the feasibility of failure early warning and modular maintenance.

[0112] This application provides a mobile array ammonia removal device and method for poultry houses. The mobile array ammonia removal device, from bottom to top, includes an iron plate base, a polytetrafluoroethylene insulation layer, and an integrated processing platform. The integrated processing platform is equipped with an air intake channel, a mobile power supply, a central control system, and an actuator storage chamber. The core purification unit is an array-type three-electrode nanosecond pulse sliding dielectric barrier discharge actuator. The central control system integrates an ammonia concentration sensor to monitor the ambient concentration in real time and dynamically adjust the discharge frequency of the actuator according to a preset quantitative control function. Simultaneously, the system monitors changes in the ammonia removal rate and triggers an actuator replacement reminder when the ammonia removal rate approaches 10%, then retrieves a replacement from the storage chamber. By combining a mobile layout with an array design, and using a frequency adaptive adjustment algorithm, the limited coverage and energy redundancy problems of fixed purification equipment are solved, achieving precise, efficient, and low-consumption treatment of ammonia in poultry houses.

[0113] It should be understood that although the steps in the flowchart above are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart above may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0114] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0115] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A mobile array poultry house ammonia removal device, characterized in that, The device includes a mobile support base, an integrated processing platform, an ammonia removal unit, and a negative pressure airflow system, wherein: The movable support base is composed of a metal support substrate and a polytetrafluoroethylene insulating layer, and the insulating layer is laid on the upper surface of the metal support substrate. The integrated processing platform is fixed on the upper part of the insulating layer. The integrated processing platform includes an air intake channel, a mobile power supply, a general program control system, and an actuator storage chamber. The ammonia removal unit is a multi-module parallel three-electrode nanosecond pulse sliding dielectric barrier discharge actuator group, which is arranged in an array on the integrated processing platform. The discharge area of ​​the discharge actuator group is coupled with the airflow channel of the intake channel. The negative pressure airflow system includes an air outlet pipe and an exhaust fan. The air outlet pipe and the exhaust fan work together to introduce the poultry house air into the discharge area through the air inlet channel and discharge the purified gas through the discharge actuator group. The overall program control system is integrated into the integrated processing platform, which is used to monitor ammonia concentration in real time, adaptively adjust discharge parameters, and execute failure warnings and replacement prompts.

2. The mobile array poultry house ammonia removal device according to claim 1, characterized in that, Each discharge actuator in the discharge actuator group consists of three electrode units connected in parallel. Each three electrode unit includes a high-voltage electrode, a ground electrode, and an auxiliary electrode for inducing the generation and extension of the slip arc. Each discharge actuator is removable and replaceable using a standardized quick-connect interface.

3. The mobile array poultry house ammonia removal device according to claim 2, characterized in that, The actuator storage chamber is pre-stored with at least one spare actuator unit that matches the standardized quick-connect interface. The spare actuator unit is installed on the integrated processing platform in a modular quick-connect manner and is used to replace the ammonia removal unit when it fails.

4. The mobile array poultry house ammonia removal device according to claim 1, characterized in that, The overall program control system includes: An ammonia concentration detection module is installed at the inlet and outlet of the air intake channel to obtain the inlet ammonia concentration and the outlet ammonia concentration. A frequency adaptive adjustment module is used to dynamically adjust the nanosecond pulse discharge frequency output by the mobile power supply to the discharge actuator group according to the inlet ammonia concentration. The status monitoring and early warning module is used to calculate the real-time ammonia removal efficiency based on the inlet ammonia concentration and the outlet ammonia concentration, and to generate an actuator replacement prompt when the ammonia removal efficiency is lower than a preset threshold.

5. A method for removing ammonia from a mobile array poultry house, characterized in that, The method includes: Real-time collection of inlet ammonia concentration at the inlet of the air intake channel and outlet ammonia concentration after purification at the outlet duct. Based on the inlet ammonia concentration, the target discharge frequency is determined by a preset quantization control function, and the mobile power supply is controlled to output nanosecond pulses to the actuator at the target discharge frequency to complete the adaptive adjustment of the nanosecond pulse discharge frequency. The ammonia removal efficiency is calculated in real time based on the inlet ammonia concentration and the outlet ammonia concentration. When the ammonia removal efficiency is lower than a preset threshold, the actuator is determined to be faulty, a replacement prompt is triggered, and a backup actuator group is called to complete the actuator replacement.

6. The method for removing ammonia from a mobile array poultry house according to claim 5, characterized in that, The method further includes: Real-time monitoring of the gradient of inlet ammonia concentration over time; When the change gradient exceeds a preset change rate threshold, the target discharge frequency is adjusted in advance based on the change gradient.

7. The method for removing ammonia from a mobile array poultry house according to claim 5, characterized in that, When the ammonia removal efficiency is lower than a preset threshold, the actuator is determined to be faulty, a replacement prompt is triggered, and a backup actuator group is called to complete the actuator replacement, including: When the ammonia removal efficiency is continuously lower than the preset threshold for a period of time exceeding the preset duration, the actuator is determined to be faulty, and an actuator replacement command is output. Determine the number of failed actuators, calculate whether the remaining effective actuators meet the minimum ammonia removal capacity requirement, and if not, output a shutdown maintenance command for the entire machine.

8. The method for removing ammonia from a mobile array poultry house according to claim 5, characterized in that, The method further includes: When the ammonia removal efficiency is lower than a preset threshold and a spare actuator is available in the actuator storage chamber, an indication message is output. The instruction information is used to prompt the operator to retrieve a spare actuator from the actuator storage compartment to replace the failed actuator; After the actuator is replaced, perform a self-test and resume operation.

9. The method for removing ammonia from a mobile array poultry house according to claim 5, characterized in that, The method further includes: Based on the ammonia removal efficiency, the average ammonia removal efficiency and total running time are recorded within a preset time period. When the average ammonia removal efficiency shows a monotonically decreasing trend and the rate of decrease exceeds a preset rate threshold, a preventative maintenance prompt is output, suggesting that the actuator be cleaned or replaced.

10. The method for removing ammonia from a mobile array poultry house according to claim 5, characterized in that, The method further includes: When the outlet ammonia concentration continues to rise within a preset time and exceeds the safe emission threshold, regardless of whether the ammonia removal efficiency is lower than the preset threshold, an emergency shutdown will be performed and an audible and visual alarm will be issued, while the operating data at the time of the fault will be recorded.

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