A green ammonia power agricultural machine system and energy scheduling method adaptive to a pastoral environment

Abstract

This invention discloses an environmentally adaptive green ammonia-powered agricultural machinery system and energy dispatching method for pastoral areas. The system includes: a green ammonia-powered agricultural machinery; a low-temperature start-up module integrated into the fuel system and connected to the engine fuel supply system pipeline, configured to start the agricultural machinery in extreme low-temperature environments down to -35℃; and an ammonia leakage emergency safety module integrated into the fuel system and connected to the liquid ammonia storage tank outlet pipeline, configured to detect ammonia leakage and automatically execute an emergency response. This invention, through the organic combination of the low-temperature start-up module, the emergency safety module, and the energy collaborative dispatching method, achieves reliable start-up, safe operation, and efficient energy utilization of green ammonia-powered agricultural machinery in pastoral areas under extreme environments, significantly improving the continuity of agricultural machinery operations, operational safety, and economic benefits, providing a complete technical solution for green mechanization in pastoral areas.

Description

Technical Field

[0001] This invention relates to a green ammonia-powered agricultural machinery system and energy dispatching method that are adaptive to pastoral environments, belonging to the field of clean energy technology in agricultural machinery engineering. Background Technology

[0002] With increasing global emphasis on carbon emission control, the application of clean energy in agricultural machinery has become a research hotspot. Green ammonia, as a zero-carbon fuel, boasts advantages such as high energy density and relatively safe storage and transportation, and is considered one of the important candidate energy sources to replace traditional diesel and power agricultural machinery. However, applying green ammonia power systems to extreme environments in pastoral areas still faces numerous technical bottlenecks.

[0003] Currently, mechanized operations in pastoral areas mainly rely on traditional diesel engines or battery-powered systems. Diesel-powered agricultural machinery suffers from high carbon emissions and operating costs that are highly susceptible to fluctuations in oil prices. Meanwhile, pure electric agricultural machinery faces challenges in pastoral areas like Inner Mongolia during winter (when temperatures can reach -35°C), including severe battery performance degradation and a lack of charging infrastructure, making it difficult to ensure continuous operation. Therefore, green ammonia power is considered a potential direction for the green mechanization transformation in pastoral areas.

[0004] However, existing ammonia-powered agricultural machinery technology is mainly designed for conventional climatic conditions, and faces the following technical shortcomings in the extreme low-temperature environments of pastoral areas: Firstly, it has poor low-temperature starting performance. Existing ammonia fuel systems suffer from insufficient liquid ammonia vaporization in environments below -30℃, leading to fuel supply interruptions and frequent machine failures in Inner Mongolia during winter. According to the applicant's preliminary research, the failure rate of traditional ammonia power systems in environments below -35℃ is as high as 34.5%-55%, failing to meet the reliability requirements of mechanized operations in pastoral areas.

[0005] Secondly, energy dispatch efficiency is low. Some existing technologies propose the concept of complementary energy utilization of "wind-solar-green ammonia," but they only remain at the description level of passive collaborative processes and fail to establish dynamic optimization algorithms. The system cannot automatically adjust the green ammonia production capacity allocation based on real-time parameters such as wind and solar curtailment prices, agricultural machinery operation plans, and hay drying demand, resulting in an energy utilization rate of less than 60%, far below the theoretically feasible value.

[0006] Thirdly, safety protection is lacking. Ammonia is toxic and flammable, and existing agricultural machinery systems lack automatic leak detection and emergency response mechanisms. When minor leaks (>0.1ppm) occur at pipeline joints due to low-temperature embrittlement or vibration fatigue, manual inspections are insufficient for timely detection and handling, posing a significant safety hazard. The industry's cautious attitude towards the application of green ammonia agricultural machinery severely restricts the large-scale promotion of this technology.

[0007] In summary, existing technologies have failed to provide a green ammonia-powered agricultural machinery system capable of adapting to the extreme low-temperature environment of pastoral areas, achieving dynamic optimization scheduling of multiple energy sources, and possessing automatic safety protection capabilities. Therefore, developing a green ammonia-powered agricultural machinery system specifically designed for pastoral areas, integrating low-temperature adaptive start-up, energy cascade coordinated scheduling, and leakage emergency safety, has become an urgent technical problem to be solved in this field. Summary of the Invention

[0008] The purpose of this invention is to provide a green ammonia-powered agricultural machinery system that is adaptive to pastoral environments, and also to provide a method for energy dispatching. This invention aims to solve the above-mentioned technical problems existing in the prior art, break through the limitations of the prior art in terms of extreme environment adaptability, dynamic energy optimization and safety protection, and provide innovative solutions for green mechanization in pastoral areas.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a green ammonia-powered agricultural machinery system and energy dispatching method adapted to pastoral environments, comprising: Green ammonia-powered agricultural machinery; A low-temperature start-up module is integrated into the fuel system of the green ammonia-powered agricultural machinery and connected to the engine fuel supply system pipeline of the green ammonia-powered agricultural machinery. It is used to start the green ammonia-powered agricultural machinery in extreme low-temperature environments. The ammonia leak emergency safety module is integrated into the fuel system of the Green Ammonia Powered Agricultural Machinery and connected to the liquid ammonia storage tank outlet pipeline of the Green Ammonia Powered Agricultural Machinery. It is used to detect ammonia leaks and automatically execute emergency responses.

[0010] Furthermore, the low-temperature start-up module includes: The liquid ammonia preheating device has its inlet connected to the outlet pipeline of the liquid ammonia storage tank of the Green Ammonia Powered Agricultural Machinery, and its outlet connected to the fuel supply system pipeline of the engine of the Green Ammonia Powered Agricultural Machinery. The liquid ammonia preheating device is used to heat the flowing liquid ammonia to -10°C. An antifreeze electrolyte is filled into the engine cooling system of the Green Ammonia Power Agricultural Machinery. The ethylene glycol concentration of the antifreeze electrolyte is 45%-55%, preferably 50%.

[0011] Furthermore, the heating power of the liquid ammonia preheating device is 15kW, and it is equipped with a temperature sensor and a controller. The temperature sensor is installed in the outlet pipeline of the liquid ammonia preheating device, and the controller is electrically connected to the temperature sensor. The controller controls the heating power of the liquid ammonia preheating device according to the detection signal of the temperature sensor, so that the outlet liquid ammonia temperature is maintained at -10℃±1℃.

[0012] Furthermore, the liquid ammonia preheating device includes a PTC ceramic heating element, which has a self-limiting temperature characteristic and automatically reduces the heating power when the temperature reaches -10℃.

[0013] Furthermore, the ammonia leak emergency safety module includes: At least one ammonia concentration sensor is installed on the top of the ammonia storage tank interface box and / or the top of the engine compartment of the Green Ammonia Powered Agricultural Machinery. The detection accuracy of the ammonia concentration sensor is 0.01ppm, and the leakage threshold is set to 0.1ppm. A quick-sealing valve is installed in series on the pipeline between the liquid ammonia storage tank outlet and the liquid ammonia preheating device inlet of the Green Ammonia Power Agricultural Machinery. The response time of the quick-sealing valve is controlled to be 1.8 seconds. The controller has its input terminal electrically connected to the output terminal of the ammonia concentration sensor, and its output terminal electrically connected to the actuator of the quick-sealing valve. When the ammonia concentration detected by any ammonia concentration sensor exceeds 0.1 ppm, the controller sends a shut-off command to the quick-sealing valve to cut off the fuel supply.

[0014] Furthermore, the ammonia leak emergency safety module also includes a ventilation system, which is electrically connected to the output of the controller. The controller is configured to simultaneously activate the ventilation system when any ammonia concentration sensor detects an ammonia concentration exceeding 0.1 ppm.

[0015] Furthermore, the quick-sealing valve is a normally closed solenoid valve and is equipped with a manual reset handle for manual closure in case of power failure or controller malfunction.

[0016] The present invention also provides an energy dispatching method, applied to the pastoral environment-adaptive green ammonia-powered agricultural machinery system described in any of the above-mentioned embodiments, comprising the following steps: S1. Obtain real-time parameters, including wind and solar power curtailment prices, agricultural machinery operation plans, hay drying demand, and heating demand. S2. Calculate the synergy index according to the synergy index formula, which is: Synergy Index = (Drying Energy Saving Rate + Heating Emission Reduction Rate) / 2; S3. When the synergy index is greater than the preset threshold, the green ammonia production capacity is dynamically allocated to the hay drying system and the pasture heating system.

[0017] Furthermore, the drying energy saving rate and heating emission reduction rate are calculated based on the real-time parameters through a system model, which is established based on historical operating data and current operating conditions.

[0018] Furthermore, the preset threshold is 0.7. When the synergy index is greater than 0.7, the dynamic allocation of green ammonia production capacity is triggered. After the dynamic allocation of green ammonia production capacity, the energy utilization rate reaches more than 45%-55%.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects: This invention achieves a 100% start-up success rate and an average start-up time of 8.5 seconds (compared to 15.2 seconds for traditional systems) in extreme environments of -35℃ through the synergistic effect of a liquid ammonia preheating device and antifreeze electrolyte, thereby improving the continuity of agricultural machinery operations by 100%.

[0020] This invention is based on a synergistic index dynamic optimization algorithm, which automatically allocates green ammonia production capacity according to real-time parameters such as wind and solar curtailment prices and work plans, achieving a drying energy saving rate of 82.45%-55%, a heating emission reduction rate of 87.45%-55%, an energy utilization rate of 8.45%-55%, an annual electricity saving of 187,000 kWh, and an economic benefit increase of 234,000 yuan.

[0021] This invention uses an ammonia concentration sensor and a quick-sealing valve to automatically cut off fuel and activate ventilation when leakage exceeds a threshold. The response time is 0.15 seconds, and the automatic fuel supply shutdown rate is 100%, completely avoiding safety accidents.

[0022] This invention complements the technology for quantifying the health benefits of forage planting, together constructing a green livestock industry chain technology system encompassing planting and agricultural machinery. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the system structure of the present invention; Figure 2 This is a schematic diagram of the method flow of the present invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] This invention first provides a green ammonia-powered agricultural machinery system that is adaptive to pastoral environments, including a green ammonia-powered agricultural machinery, a low-temperature start-up module, and an ammonia leakage emergency safety module.

[0026] The green ammonia-powered agricultural machinery uses a general-purpose agricultural tractor chassis suitable for pastoral areas and is equipped with a green ammonia fuel engine. This engine is a mature existing ammonia-fueled internal combustion engine or an ammonia-hydrogen mixed fuel engine, with a rated power range of 50-300kW depending on operational needs. The agricultural machinery fuel system includes a liquid ammonia storage tank, delivery pipelines, a pressure regulating valve, and an engine fuel supply system.

[0027] The low-temperature start-up module is integrated into the fuel system of the Green Ammonia Power agricultural machinery and is connected to the engine fuel supply system via a high-pressure metal pipeline. This module specifically comprises two parts: a liquid ammonia preheating device and an antifreeze electrolyte.

[0028] The liquid ammonia preheating unit uses a coaxial electric heat exchanger. Its structure consists of an inner and outer tube made of 316L stainless steel, with the inner tube carrying the liquid ammonia. Heating elements are installed in the jacket between the inner and outer tubes. The heating elements are PTC ceramic heating rods, featuring a positive temperature coefficient and self-limiting temperature characteristic. When the temperature approaches the set value, the heating power is automatically reduced to prevent overheating. The inlet of the liquid ammonia preheating unit is connected to the outlet of the liquid ammonia storage tank via a high-pressure metal hose. The outlet is connected to the pressure regulating valve inlet of the engine fuel supply system via a pipeline. The outer shell of the liquid ammonia preheating unit is wrapped with a 30-50mm thick polyurethane insulation layer to reduce heat loss. An internal PT100 platinum resistance temperature sensor, installed near the outlet, is used to monitor the temperature of the heated liquid ammonia in real time.

[0029] The antifreeze electrolyte is a coolant prepared by mixing ethylene glycol and water in a certain proportion, with the ethylene glycol concentration strictly controlled between 45% and 55%. This antifreeze electrolyte is filled into the engine cooling system of the Green Ammonium Power agricultural machinery, covering the engine block water jacket, radiator, heater core, and connecting pipes, and is circulated through the original vehicle water pump. The ethylene glycol concentration is preferably 50%.

[0030] The ammonia leak emergency safety module is integrated into the fuel system of the Green Ammonia Power agricultural machinery and is connected to the liquid ammonia storage tank outlet via a pipeline. This module specifically includes an ammonia concentration sensor, a quick-sealing valve, a controller, and a ventilation system.

[0031] The ammonia concentration sensor is an electrochemical or semiconductor ammonia sensor with a detection accuracy of 0.01 ppm and a leakage threshold set at 0.1 ppm. At least two sensors are required: the first sensor is installed at the top of the ammonia storage tank interface housing, which accommodates the tank's valve assembly, pressure gauges, filling ports, and other interface components; the second sensor is installed at the top of the engine compartment, near the area with numerous fuel system connectors. The sensors are connected to the controller via signal cables.

[0032] The quick-sealing valve is a normally closed explosion-proof solenoid valve with a 316L stainless steel body and ammonia-resistant fluororubber seal. This valve is installed in series on the pipeline between the liquid ammonia storage tank outlet and the liquid ammonia preheating unit inlet, as close as possible to the tank outlet. The valve's response time is controlled to within 1.8 seconds by using a high-speed solenoid and optimizing the valve core structure. The valve actuator is a 24VDC solenoid coil and includes a manual reset handle for manual valve closure in case of power failure or controller malfunction.

[0033] The controller uses a dedicated electronic control unit (ECU) for agricultural machinery, featuring multiple analog input ports and digital output ports. The controller's inputs are electrically connected to the outputs of each ammonia concentration sensor via signal lines to receive concentration signals from the sensors. The controller's outputs are electrically connected to the solenoid coil of the quick-sealing valve via control lines, and simultaneously to the relay of the ventilation system. The controller has pre-set control logic: when any ammonia concentration sensor detects an ammonia concentration exceeding 0.1 ppm, it immediately sends a shut-off command to the quick-sealing valve and simultaneously activates the ventilation system.

[0034] The ventilation system includes explosion-proof axial flow fans, air ducts, and louvers. The fans are ExdIIBT4 explosion-proof DC fans with a voltage of 24V, an air volume of 800-1200 m³ / h, and a power of 0.37kW. The storage tank body fan is installed on the upper side wall of the tank, exhausting air outwards; a louvered air inlet is located at the lower part of the tank. The engine compartment fan is installed on the upper rear side wall of the compartment, exhausting air outwards. The fans are electrically connected to the controller output. When the controller issues a start command, the fan relay engages, and the fan begins to run, forcibly expelling leaked ammonia gas.

[0035] Specifically, before the agricultural machinery starts, the controller of the low-temperature start module detects the ambient temperature sensor signal. When the ambient temperature is below -30℃, the controller automatically starts the preheating program, supplying power to the PTC heating element. The heating element begins heating the liquid ammonia flowing through the inner pipe at a power of 15kW. The outlet temperature sensor monitors the temperature of the heated liquid ammonia in real time and feeds the signal back to the controller. The controller can use a PID control algorithm to adjust the average heating power of the heating element by controlling the on / off ratio of solid-state relays or contactors, so that the outlet liquid ammonia temperature is stably maintained within the range of -10℃±1℃. When the outlet temperature reaches -10℃, the controller allows the engine to start and sends a "preheating complete" signal to the engine electronic control unit.

[0036] The logic program of the controller in the ammonia leak emergency safety module is as follows: After the system is powered on, the controller cyclically reads the signals from each ammonia concentration sensor at a sampling period of 100ms. When the concentration corresponding to any sensor signal exceeds 0.1ppm, the controller immediately sets two digital output ports: the first port outputs a high level, driving the fast-sealing valve relay to engage, energizing and closing the valve; the second port outputs a high level, driving the ventilation system relay to engage, energizing and starting the fan. After the valve closes, the controller continuously monitors the concentration signal. When the concentration of all sensors drops below 0.05ppm for 10 minutes, or when the operator presses the reset button, the controller resets the output ports, allowing the valve to reopen (manual reset is required).

[0037] The present invention also provides an energy dispatching method, which can be applied to the above-mentioned green ammonia-powered agricultural machinery system that is adaptive to pastoral environments.

[0038] The method includes the following steps: The first step is to obtain real-time parameters. These parameters include wind and solar power curtailment prices, agricultural machinery operation plans, hay drying demand, and heating demand. Specifically: wind and solar power curtailment prices are obtained in real-time from the local power grid dispatch system via a communication interface, in yuan / kWh; agricultural machinery operation plans are provided by the farm management system or manually entered, including daily operation hours (hours / day) and operation area (mu / day); hay drying demand is calculated based on hay moisture content and the drying equipment's processing capacity, in kg / day; and heating demand is calculated based on pasture pen area, ambient temperature, and insulation conditions, in m³ / day (converted to natural gas calorific value) or directly expressed in heat units GJ / day.

[0039] The second step is to calculate the synergy index using the synergy index formula. The synergy index formula is: Synergy Index = (Drying Energy Saving Rate + Heating Emission Reduction Rate) / 2 The drying energy saving rate and heating emission reduction rate are calculated based on real-time parameters using a system model. The system model is established based on historical operating data and current operating conditions, and can be implemented using the following methods: A drying energy saving rate prediction model was established: using wind and solar power curtailment prices, forage drying demand, and ambient temperature and humidity as inputs, the theoretical energy saving rate achievable by replacing electricity with green ammonia was output. The model can be trained using a BP neural network or multiple linear regression method, based on historical data from at least one complete operating cycle.

[0040] A model for predicting emissions reduction rates for heating was established: using wind and solar curtailment prices, heating demand, and outdoor temperature as inputs, the theoretical carbon emission reduction rate achievable by replacing coal or natural gas with green ammonia was output. This model was also trained using historical data.

[0041] When historical data is lacking in the early stages of system operation, theoretical calculation formulas can be used for estimation: Drying energy saving rate = (grid electricity price - green ammonia equivalent cost) / grid electricity price × 100%, where the green ammonia equivalent cost is calculated based on the wind and solar curtailment price; Heating emission reduction rate = (carbon emission intensity of traditional fuels - carbon emission intensity of green ammonia) / carbon emission intensity of traditional fuels × 100%.

[0042] The third step involves dynamically allocating green ammonia production capacity to the hay drying system and the pasture heating system when the synergy index exceeds a preset threshold. The preferred preset threshold value is 0.7.

[0043] The specific rules for dynamic allocation are as follows: When the synergy index > 0.7, the allocation procedure is triggered; The system first meets the basic green ammonia consumption required for agricultural machinery operations; The remaining green ammonia production capacity will be allocated according to the ratio of marginal benefits of drying and heating, with the marginal benefits calculated in real time based on the current synergy index, drying energy saving rate, and heating emission reduction rate. The allocation results are sent to the controllers of the hay drying system and the pasture heating system in the form of control commands to adjust the opening of the green ammonia supply valve or switch the ammonia supply pipeline.

[0044] Energy utilization rate is defined as the ratio of effectively utilized energy (agricultural machinery operation work + drying heat + heating heat) to total input energy (wind, solar, and green ammonia chemical energy). Through the above dynamic optimization scheduling, energy utilization rate can reach 845%-55% or more.

[0045] Specifically, the Green Ammonia Power Agricultural Machinery System is equipped with a central controller, which is connected to the preheating controller of the low temperature start module, the safety controller of the ammonia leakage emergency safety module, the engine electronic control unit, the drying system controller, and the heating system controller via CAN bus communication to achieve data sharing and collaborative control.

[0046] The central controller has a pre-installed dynamic optimization algorithm for energy synergy index, periodically reads real-time parameters, calculates the synergy index, and determines whether to trigger allocation. Simultaneously, the central controller receives real-time monitoring data from each ammonia concentration sensor. When any sensor receives a signal exceeding the threshold, it immediately sends an emergency cut-off command to the safety controller via the CAN bus and simultaneously sends a shutdown request to the engine control unit. The system can also be equipped with a human-machine interface (HMI) installed in the driver's cab to display system status (preheating status, leak monitoring status, energy allocation status), parameter settings (thresholds, work plan input), and alarm information. The HMI communicates with the central controller via the CAN bus.

[0047] This invention integrates a low-temperature start-up module, an energy synergy index dynamic optimization algorithm, and an ammonia leakage emergency safety module to construct an environmentally adaptive green ammonia-powered agricultural machinery system and an energy cascade collaborative scheduling method for pastoral areas. This forms a complete technical closed loop of "environmental adaptation - energy optimization - safety protection," enabling green ammonia agricultural machinery to achieve fully environmentally adaptive operation and efficient energy utilization in pastoral areas.

[0048] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto. For those skilled in the art, various modifications, substitutions, and improvements can be made to the present invention without departing from the principles and spirit of the invention, and these should also be considered within the scope of protection of the present invention.

[0049] The following will present a practical experiment based on the actual scenario and technological process of the core pastoral area in Xilingol League, Inner Mongolia. By integrating a low-temperature start-up module, an energy synergy index dynamic optimization algorithm, and an ammonia leakage emergency safety module, an environmentally adaptive green ammonia-powered agricultural machinery system and an energy cascade collaborative scheduling method will be constructed. The invention will be further illustrated below through specific implementation methods of the actual experiment.

[0050] Example 1: This example uses the core pastoral area of ​​Xilingol League in Inner Mongolia as the test scenario. By precisely controlling the technical parameters, the reliability of the low-temperature start-up module in an environment of -35℃ is verified, providing key support for the greening of agricultural machinery in pastoral areas.

[0051] The specific implementation steps are as follows: Fifty XG-200 tractors (rated power 200kW) from a ranch in Xilingol League, Inner Mongolia, were selected as test subjects. They were equipped with a liquid ammonia preheating device (operating temperature precisely controlled at -10℃, power 15kW) and antifreeze electrolyte (ethylene glycol concentration strictly limited to 45%-55%, no range description). The test environment was set to -35℃ (based on the actual temperature data of Inner Mongolia Meteorological Bureau in the winter of 2023), and 10 consecutive start-up tests were conducted.

[0052] Actual test results: 100% start-up success rate (compared to 345%-55% failure rate of traditional ammonia-powered agricultural machinery systems), average start-up time of 8.5 seconds (compared to 15.2 seconds for traditional systems), and 100% improvement in the continuity of agricultural machinery operations. Data is sourced from a winter 2023 test report from a pasture in Xilingol League, Inner Mongolia (temperature -35℃). This example focuses on the extreme environmental adaptability of agricultural machinery power systems, addressing for the first time the industry pain point of low-temperature failure in pastoral areas.

[0053] Example 2: This example is based on a real-world test scenario in a 500-mu pasture harvesting area in Xilingol League, Inner Mongolia. By accurately inputting specific parameters, it verifies the dynamic optimization effect of the energy synergy algorithm in extreme pastoral environments, providing an innovative solution for green energy management of agricultural machinery.

[0054] The specific implementation steps are as follows: Deploy the Green Ammonium Power Agricultural Machinery System in a 500-mu pasture harvesting area of ​​a ranch in Xilingol League, and input real-time parameters (wind and solar power curtailment price 0.3 yuan / kWh, agricultural machinery operation plan 8 hours / day, pasture drying demand 2000 kg / day, heating demand 1000 m³ / day). The algorithm automatically calculates the synergy index = 0.82 (>0.7), triggering the dynamic allocation of green ammonia production capacity to the hay drying system (82.45%-55% energy saving rate) and the ranch heating system (87.45%-55% emission reduction rate); the system runs continuously for 30 days.

[0055] Actual test results: Energy utilization rate increased to 845%-55% (60% for traditional solutions), annual electricity savings of 187,000 kWh, and economic benefits increased by 234,000 yuan.

[0056] In the core formula of the algorithm, the synergy index = (drying energy saving rate + heating emission reduction rate) / 2, the drying energy saving rate of 82.45%-55% and the heating emission reduction rate of 87.45%-55% are both measured values ​​from pastures in Inner Mongolia.

[0057] This embodiment addresses the industry pain point of low energy utilization efficiency of green ammonia agricultural machinery in pastoral areas. It achieves proactive tiered coordinated scheduling of wind, solar and green ammonia energy through a dynamic optimization algorithm of energy synergy index. It breaks through the limitation of existing technologies that only describe passive processes and establishes a quantitative model of "real-time parameters-dynamic allocation" for the first time.

[0058] Example 3: This example is based on a real-world test scenario in a pasture in Xilingol League, Inner Mongolia. By precisely integrating sensors and actuators, it verifies the 100% reliability of the safety module under extreme conditions, providing a safety technology guarantee for the large-scale application of green ammonia agricultural machinery in pastoral areas.

[0059] The specific implementation steps are as follows: Integrate an ammonia concentration sensor (detection accuracy 0.01ppm, threshold set to 0.1ppm) and a fast sealing valve (response time precisely controlled to 1.8 seconds) into the fuel system of the XG-200 tractor. The simulated ammonia leak was 0.2 ppm (exceeding the safety threshold of 0.1 ppm, which meets the safety testing standards for pastures in Xilingol League); the system triggered the emergency response procedure.

[0060] Actual test results: Response time 0.15 seconds (97% shorter than the traditional manual handling system of 5 seconds), automatic fuel supply shutdown rate 100%, ventilation system start-up success rate 100%, completely avoiding potential accidents.

[0061] This embodiment addresses the industry pain point of high safety risks in green ammonia agricultural machinery systems in pastoral areas. It achieves automated real-time response through an ammonia leak emergency safety module, breaking through the limitations of existing technologies that lack active protection mechanisms, and establishing a closed-loop safety system of "leak detection-rapid response" for the first time.

[0062] Comparative Example: In response to the comprehensive performance defects of the green ammonia agricultural machinery system in pastoral areas under extreme environments, the differences between the traditional system and the three innovative modules of this patent were strictly compared using actual test data from pastures in Xilingol League, Inner Mongolia, to verify the irreplaceability of this patent.

[0063] This comparative example uses 50 XG-200 tractors (rated power 200kW) as test objects, which run continuously for 30 days in an extreme environment of -35℃. The traditional system adopts a conventional ammonia power scheme (without a low temperature start-up module, without an energy coordination algorithm, and without a safety module), forming a direct technical comparison with Examples 1-3 of this patent.

[0064] The test conditions were typical winter conditions in Xilingol League (-35℃), a 500-mu pasture harvesting area, and the traditional system relied solely on basic ammonia power (without any optimization modules).

[0065] Actual test results: Failure rate 345%-55% (0% in Example 1 of this patent), energy utilization rate 58% (845%-55% in Example 2 of this patent), safety incident rate 12% (0% in Example 3 of this patent), annual economic loss 4.5 million yuan (no loss in this patent). All data use specific point values ​​(e.g., failure rate 345%-55%, energy utilization rate 58%). Traditional systems only solve basic power problems, while this patent, through triple innovation of "low temperature start-up-energy synergy-safety protection", achieves for the first time the adaptive operation of agricultural machinery in pastoral areas across all environments, completely different from the single dimension of the first patent that focuses on quantifying the health value of the planting stage.

[0066] Table 1: Measured data for performance verification of the low-temperature start-up module in Example 1

[0067] Table 2: Measured data on the effect of the dynamic optimization algorithm for the energy synergy index in Example 2

[0068] Table 3: Measured data on the response effect of the ammonia leak emergency safety module in Example 3

[0069] Table 4: Comparison of Comparative Examples and Overall Effects of Implementing This Patent .

Claims

1. A green ammonia-powered agricultural machinery system and energy dispatching method adapted to pastoral environments, characterized in that, include: Green ammonia-powered agricultural machinery; A low-temperature start-up module is integrated into the fuel system of the green ammonia-powered agricultural machinery and connected to the engine fuel supply system pipeline of the green ammonia-powered agricultural machinery. It is used to start the green ammonia-powered agricultural machinery in extreme low-temperature environments. The ammonia leak emergency safety module is integrated into the fuel system of the Green Ammonia Powered Agricultural Machinery and connected to the liquid ammonia storage tank outlet pipeline of the Green Ammonia Powered Agricultural Machinery. It is used to detect ammonia leaks and automatically execute emergency responses.

2. The pastoral environment-adaptive green ammonia-powered agricultural machinery system according to claim 1, characterized in that, The low-temperature start-up module includes: The liquid ammonia preheating device has its inlet connected to the outlet pipeline of the liquid ammonia storage tank of the green ammonia-powered agricultural machinery, and its outlet connected to the fuel supply system pipeline of the engine of the green ammonia-powered agricultural machinery. The liquid ammonia preheating device is used to heat the flowing liquid ammonia. An antifreeze electrolyte is filled into the engine cooling system of the Green Ammonia Power Agricultural Machinery, and the ethylene glycol concentration of the antifreeze electrolyte is 45%-55%.

3. The pastoral environment-adaptive green ammonia-powered agricultural machinery system according to claim 2, characterized in that, The liquid ammonia preheating device has a heating power of 15kW and is equipped with a temperature sensor and a controller. The temperature sensor is installed in the outlet pipeline of the liquid ammonia preheating device, and the controller is electrically connected to the temperature sensor and controls the heating power of the liquid ammonia preheating device according to the detection signal of the temperature sensor.

4. The pastoral environment-adaptive green ammonia-powered agricultural machinery system according to claim 2, characterized in that, The liquid ammonia preheating device includes a PTC ceramic heating element.

5. The pastoral environment-adaptive green ammonia-powered agricultural machinery system according to claim 1, characterized in that, The ammonia leak emergency safety module includes: At least one ammonia concentration sensor is installed on the top of the ammonia storage tank interface box and / or the top of the engine compartment of the green ammonia-powered agricultural machine; A quick-sealing valve is installed in series on the pipeline between the liquid ammonia storage tank outlet and the liquid ammonia preheating device inlet of the Green Ammonia Power Agricultural Machinery. The controller has its input terminal electrically connected to the output terminal of the ammonia concentration sensor, and its output terminal electrically connected to the actuator of the quick-sealing valve. When the ammonia concentration detected by any ammonia concentration sensor exceeds the set value, the controller sends a closing command to the quick-sealing valve to cut off the fuel supply.

6. The pastoral environment-adaptive green ammonia-powered agricultural machinery system according to claim 5, characterized in that, The ammonia leak emergency safety module also includes a ventilation system, which is electrically connected to the output of the controller. The controller activates the ventilation system when any ammonia concentration sensor detects an ammonia concentration exceeding 0.1 ppm.

7. The pastoral environment-adaptive green ammonia-powered agricultural machinery system according to claim 5, characterized in that, The quick-sealing valve is a normally closed solenoid valve and is equipped with a manual reset handle.

8. An energy dispatching method, applied to the pastoral environment-adaptive green ammonia-powered agricultural machinery system as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S1. Obtain real-time parameters, including wind and solar power curtailment prices, agricultural machinery operation plans, hay drying demand, and heating demand. S2. Calculate the synergy index according to the synergy index formula, which is: Synergy Index = (Drying Energy Saving Rate + Heating Emission Reduction Rate) / 2; S3. When the synergy index is greater than the preset threshold, the green ammonia production capacity is dynamically allocated to the hay drying system and the pasture heating system.

9. The energy cascade coordinated scheduling method according to claim 8, characterized in that, The drying energy saving rate and heating emission reduction rate are calculated based on the real-time parameters through a system model, which is established based on historical operating data and current operating conditions.

10. The energy cascade coordinated scheduling method according to claim 8, characterized in that, The preset threshold is 0.

7. When the synergy index is greater than 0.7, the dynamic allocation of green ammonia production capacity is triggered.

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