Gas mixing control device of LPG generator set

Abstract

The invention discloses a gas mixing control device for an LPG (Liquefied Petroleum Gas) generator set, which relates to the technical field of generator set operation control, and comprises a gas engine for realizing accurate mixing proportion control under the matching of a proportion dynamic response component, predicting the optimal gas mixing proportion and flow demand under the current working condition, and controlling the gas engine to operate according to the optimal gas mixing proportion and flow demand. When the propane content in the LPG is increased, the model prediction controller properly reduces the gas inflow and increases the air amount, sufficient combustion is ensured, the mixing proportion and flow can be rapidly corrected, the combustion process is rapidly recovered to be stable, it is ensured that the gas engine stably operates under different loads, the whole device forms flow balance and stable operation, and the service life of the gas engine is prolonged. Under different gas sources and LPG component differences, effective components actually participating in combustion are accurately judged, so that the needed gas and air amount is accurately calculated, accurate mixing proportion control is achieved, and meanwhile accurate control over the mixed gas mixing process is achieved under the cooperation of an adjusting control assembly.

Description

Technical Field

[0001] The invention relates to the technical field of generator set operation control, and in particular to a gas mixing control device for an LPG generator set. Background Art

[0002] Gas generator sets using liquefied petroleum gas as fuel have been widely used in various industries, but the gas source pressure used by the above gas generator sets is relatively low, generally below 30kPa. It is precisely because this type of unit requires low gas pressure when working and has wide adaptability that this type of gas generator set is currently the most widely used in the market.

[0003] However, in the prior art, during the use of traditional LPG generator sets, relatively simple mechanical structures or basic sensor feedback control methods are conventionally adopted, so that some devices rely only on a single pressure sensor to indirectly determine the mixing ratio of gas and air. Since the composition of LPG varies under different gas sources or working conditions, its pressure is not completely linearly corresponding to the effective components actually participating in combustion, which makes it difficult to accurately control the gas mixing ratio, resulting in changes in different loads and ambient temperatures, affecting the overall combustion efficiency and emission performance. When the load suddenly increases, the gas supply structure cannot adjust the mixing ratio in time to provide sufficient energy output, resulting in large fluctuations in the combustion pressure inside the engine, which damages the service life of the entire equipment. Therefore, it is necessary to propose a gas mixing control device for an LPG generator set. Summary of the invention

[0004] The purpose of the present invention is to provide a gas mixing control device for an LPG generator set to solve the problem proposed in the above background technology that in the use of traditional LPG generator sets, a relatively simple mechanical structure or a basic sensor feedback control method is conventionally adopted, so that some devices only rely on a single pressure sensor to indirectly judge the mixing ratio of gas and air. Since the components of LPG are different under different gas sources or working conditions, its pressure is not completely linearly corresponding to the effective components actually participating in combustion, which makes it difficult to accurately control the gas mixing ratio, resulting in the overall combustion efficiency and emission performance being affected when the load and ambient temperature change. When the load suddenly increases, the gas supply structure cannot adjust the mixing ratio in time to provide sufficient energy output, resulting in large fluctuations in the combustion pressure inside the engine, which damages the service life of the overall equipment.

[0005] To achieve the above object, the present invention provides the following technical solution: a gas mixing control device for an LPG generator set, comprising: A gas engine is installed inside the protective body and has an air intake at the top thereof, and is used to form a power source to drive the entire device; The top of the premixed vortex intake chamber is connected to the ratio control controller through the adaptive multi-source intake valve pipe, and is used to fully premix the incoming gas and air before entering the internal combustion chamber of the gas engine through the internal vortex structure, thereby improving the combustion efficiency; A proportional dynamic response component, which is installed on the inner side of the protective body and is connected to the gas manifold, and is used to dynamically adjust and control the gas mixture ratio under different load and ambient temperature changes; The regulating control component has a top end connected to the multi-stage mixing chamber, and is used to set a multi-stage mixing chamber inside the regulating control component to gradually refine the mixing process of the gas and the air; The bottom end of the proportional control controller is connected to the air flow control chamber through a control valve pipe and is used to control and adjust the mixing degree of the gas and air.

[0006] Preferably, the proportional dynamic response component includes: A proportional three-way guide valve tube, a high-speed electromagnetic drive valve, a model prediction controller and a high-precision feedback valve tube are connected; the left end of the proportional three-way guide valve tube is connected to the top of the air guide manifold, the bottom end of the air guide manifold is connected to a micro mixer, the right end of the proportional three-way guide valve tube is connected to the model prediction controller, the right end of the high-precision feedback valve tube is connected to the surface of the model prediction controller, and the bottom of the side end of the high-precision feedback valve tube is connected to a pulse burner.

[0007] Preferably, the side end of the pulse burner is connected to an adaptive pressure regulating chamber through a gas composition regulator, and the top end of the connecting proportional three-way guide valve pipe is connected to a circulation filter valve pipe through a high-speed electromagnetic drive valve, and the side end of the circulation filter valve pipe is connected to the side end surface of the multi-stage mixing chamber.

[0008] Preferably, the side end of the high-speed electromagnetic drive valve is connected to a voltage stabilizer through a bent pipe, and the side end of the connection between the voltage stabilizer and the high-speed electromagnetic drive valve is connected to an electrically controlled safety valve, and the side ends of the electrically controlled safety valve are respectively installed with an emergency shut-off valve and a flow monitor.

[0009] Preferably, the regulating control component includes: A dynamic flow distributor, a load pressurizing valve tube and a microprocessor, wherein the load pressurizing valve tube is connected to the other side end surface of the multi-stage mixing chamber through the dynamic flow distributor, a pressure sensor is installed on the bottom side end of the load pressurizing valve tube, the bottom end of the load pressurizing valve tube is connected to a mixer, and an electrostatic mixing enhancer and a gas composition monitoring sensor are respectively installed on the top side end of the mixer.

[0010] Preferably, the left and right ends of the mixer are respectively connected with a first inlet pipe and a second inlet pipe, the bottom of the mixer is connected to a mixing uniformity monitor, the bottom of the mixing uniformity monitor is installed with a mixing control feedback device, and the side end of the mixer is installed with a temperature sensor.

[0011] Preferably, the side end of the first inlet pipe is connected to a preheating control pipe, the side end of the preheating control pipe is connected to the surface of the proportional adjustment controller, the side end of the second inlet pipe is connected to a volume control valve pipe, the side end of the volume control valve pipe is connected to an ultrasonic transducer, and the ultrasonic transducer is installed at the side end of the micro mixer.

[0012] Preferably, an intake valve chamber is installed inside the top of the protective body, an oil delivery end is installed on the top wall surface of the intake valve chamber, an intake pressure regulating valve is installed at the bottom of the intake valve chamber, and the bottom of the intake pressure regulating valve is connected to an intake control flow valve pipe.

[0013] Preferably, the side end of the air intake control flow valve tube is connected to a premixing chamber, and the premixing chamber is connected to the side end of the pulse burner.

[0014] Preferably, the bottom end of the proportional regulation controller is connected to a control pipe, and the side end of the control pipe is connected to the front end of the gas engine.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, with the cooperation of the proportional dynamic response component, when the mixed gas from the gas guide manifold first reaches the three-way guide valve pipe connected to the proportion, a part of the mixed gas directly enters the model prediction controller through its left end, and then another part of the mixed gas passes through its top and enters the circulation filter valve pipe under the control of the high-speed electromagnetic drive valve, and then the treated mixed gas is transported to the multi-stage mixing chamber to facilitate the subsequent more precise mixing process. After that, after the model prediction controller receives the mixed gas parameter information from the left end of the three-way guide valve pipe connected to the proportion, according to the difference in LPG components, the model prediction controller can accurately determine the effective components actually participating in the combustion based on the component monitoring data, thereby accurately calculating the required amount of gas and air, realizing precise mixing ratio control, and predicting the optimal gas mixing ratio and flow demand under the current working conditions, so that when the propane content in the LPG increases, the model prediction controller can appropriately reduce the gas intake and increase the air volume to ensure sufficient combustion.

[0016] 2. In the present invention, by cooperating with the proportional dynamic response component, the mixed gas that enters the pulse burner through the high-precision feedback valve pipe in another way is subjected to combustion test, so that in the pulse burner, the gas composition regulator adjusts the composition of the mixed gas entering according to the preset optimal combustion composition range or the instruction of the model prediction controller to ensure the stability and high efficiency of combustion. Then, when it is detected that the load has an upward trend, the three-way guide valve pipe and the high-speed electromagnetic drive valve connected to the proportion are adjusted in advance to increase the intake amount of gas and air and optimize the mixing ratio, so that the pulse burner can output sufficient energy in time, avoid large fluctuations in the combustion pressure of the gas engine, and protect the life of the equipment. When the load change causes the combustion situation to deviate from the expectation, such as combustion pressure fluctuations or combustion efficiency reduction, the model prediction controller immediately adjusts the control instruction again according to the feedback data, quickly corrects the mixing ratio and flow rate, and quickly restores the stability of the combustion process, ensuring that the gas engine runs smoothly under different loads, so that the overall device forms a flow balance and stable operation, and accurately judges the effective components actually participating in the combustion under different gas sources and LPG composition differences, so as to accurately calculate the required amount of gas and air, and realize accurate mixing ratio control.

[0017] 3. In the present invention, with the cooperation of the regulating control component, the mixed gas output from the multi-stage mixing chamber enters the load pressurization valve pipe through the dynamic flow distributor. The dynamic flow distributor distributes the mixed gas according to the load condition of the gas engine. When the load is high, more mixed gas is distributed to the main combustion area of ​​the internal combustion chamber. When the load is low, it is appropriately reduced and part of the mixed gas is directed to the pulse burner to improve the overall efficiency and stability of the device. The pressure sensor monitors the mixed gas pressure in the load pressurization valve pipe in real time and transmits the data to the microprocessor. The microprocessor adjusts the opening of the load pressurization valve pipe according to the pressure data and the preset range to control the mixed gas pressure, ensuring that it enters the mixer with a stable and appropriate pressure. The mixed gas entering the mixer is promoted to be more evenly mixed under the action of the electrostatic mixing enhancer. The gas composition monitoring sensor The mixture composition is monitored in real time, the temperature sensor monitors the temperature of the mixture, and the mixing uniformity monitor monitors the mixing uniformity of the mixture. These monitoring data are transmitted to the mixing control feedback device and the model prediction controller respectively. The first inlet pipe introduces a gas into the mixer to improve the combustion characteristics and combustion efficiency of the mixture. The gas introduced by the second inlet pipe is adjusted by the flow control valve pipe, and the ultrasonic transducer is used to generate high-frequency ultrasonic waves to further refine the gas and improve its mixing uniformity and reaction activity with other mixed gases. The mixing control feedback device comprehensively analyzes the state of the mixture according to the feedback data of each sensor, responds in time to adjust the intake parameters of the first inlet pipe and the second inlet pipe, and generates corresponding control instructions and sends them to the preheating control pipe and ultrasonic transducer respectively, so as to realize precise control of the mixing process of the mixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic structural diagram of the main view of a gas mixing control device for an LPG generator set of the present invention; Figure 2 It is a schematic structural diagram of a side view of a gas mixing control device for an LPG generator set of the present invention; Figure 3 It is a schematic diagram of the internal structure of a protective body in a gas mixing control device for an LPG generator set of the present invention; Figure 4 This is a schematic diagram of the installation position structure of an adjustment control component in a gas mixing control device for an LPG generator set of the present invention; Figure 5 It is a structural schematic diagram of a proportional dynamic response component in a gas mixing control device for an LPG generator set of the present invention; Figure 6 It is a partial structural schematic diagram of a regulating control component in a gas mixing control device for an LPG generator set of the present invention; Figure 7 A gas mixing control device for an LPG generator set according to the present invention Figure 6 A schematic diagram of the enlarged structure at point A; Figure 8 It is a schematic diagram of the operating structure of a premixed vortex inlet chamber in a gas mixing control device for an LPG generator set of the present invention; Fig. 9 This is a schematic diagram of the first system part of a gas mixing control device for an LPG generator set of the present invention; Fig.10 This is a schematic diagram of the second system part of a gas mixing control device for an LPG generator set of the present invention.

[0019] In the figure: 1. Protective body; 2. Intake valve chamber; 3. Oil delivery end; 4. Gas engine; 5. Premixed vortex intake chamber; 6. Air flow regulating chamber; 7. Ultrasonic transducer; 8. Micro mixer; 9. Air guide manifold; 10. Proportional dynamic response component; 101. Connecting proportional three-way delivery valve pipe; 102. Model prediction controller; 103. High-precision feedback valve pipe; 104. Pulse burner; 105. Circulation filter valve pipe; 106. Adaptive pressure regulating chamber; 107. High-speed electromagnetic drive valve; 108. Electronically controlled safety valve; 109. Flow monitor; 1090. Emergency shut-off valve; 1091. Voltage stabilizer protector; 11. Adjustment control component; 11 0. Dynamic flow distributor; 111. Load pressurization valve tube; 112. Microprocessor; 113. Pressure sensor; 114. Mixing control feedback device; 115. Gas composition monitoring sensor; 116. Electrostatic mixing enhancer; 117. Mixer; 118. Temperature sensor; 119. Mixing uniformity monitor; 1190. First inlet pipe; 1191. Second inlet pipe; 13. Intake pressure regulating valve; 14. Control pipe; 15. Multi-stage mixing chamber; 16. Proportional regulation controller; 17. Adaptive multi-source intake valve tube; 18. Quantity control valve tube; 19. Preheating control tube; 20. Control valve tube; 22. Intake control flow valve tube; 23. Premixing chamber. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1 - Fig.10 As shown: A gas mixing control device for an LPG generator set, comprising: A gas engine 4 is installed inside the protective body 1 and has an air inlet at the top thereof, and is used to form a power source to drive the entire device; The top of the premixed vortex inlet chamber 5 is connected to the ratio adjustment controller 16 through the adaptive multi-source inlet valve pipe 17, and is used to fully premix the incoming gas and air before entering the internal combustion chamber of the gas engine 4 through the internal vortex structure, thereby improving the combustion efficiency; A proportional dynamic response component 10 is installed at the inner side end of the protective body 1 and is connected to the gas manifold 9 to dynamically adjust and control the gas mixing ratio under different load and ambient temperature changes; The top of the regulating control assembly 11 is connected to the multi-stage mixing chamber 15, and the multi-stage mixing chamber is arranged inside the regulating control assembly 11 to gradually refine the mixing process of the gas and the air; The bottom end of the proportional adjustment controller 16 is connected to the air flow adjustment chamber 6 through the control valve pipe 20, and is used to control and adjust the mixing degree of the gas and air.

[0022] In the present invention, according to Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the proportional dynamic response component 10 includes: The proportional three-way guide valve tube 101, the high-speed electromagnetic drive valve 107, the model prediction controller 102 and the high-precision feedback valve tube 103 are connected; the left end of the proportional three-way guide valve tube 101 is connected to the top of the air guide manifold 9; the bottom end of the air guide manifold 9 is connected to the micro mixer 8; the right end of the proportional three-way guide valve tube 101 is connected to the model prediction controller 102; the right end of the high-precision feedback valve tube 103 is connected to the surface of the model prediction controller 102; the bottom of the side end of the high-precision feedback valve tube 103 is connected to the pulse burner 104.

[0023] The side end of the pulse burner 104 is connected to an adaptive pressure regulating chamber 106 through a gas composition regulator, and the top end of the proportional three-way guide valve pipe 101 is connected to a circulation filter valve pipe 105 through a high-speed electromagnetic drive valve 107. The side end of the circulation filter valve pipe 105 is connected to the side end surface of the multi-stage mixing chamber 15.

[0024] The side end of the high-speed electromagnetic drive valve 107 is connected to the voltage stabilizer protector 1091 through a bent pipe, and the side end of the connection between the voltage stabilizer protector 1091 and the high-speed electromagnetic drive valve 107 is connected to an electrically controlled safety valve 108, and the side ends of the electrically controlled safety valve 108 are respectively installed with an emergency shut-off valve 1090 and a flow monitor 109.

[0025] In a specific solution, when the mixed gas from the gas guide manifold 9 first reaches the proportional three-way delivery valve pipe 101, a part of the mixed gas directly enters the model prediction controller 102 through its left end. This part of the gas will be used as one of the sample sources for the model prediction controller 102 to perform data analysis and decision-making, providing it with the initial state information of the mixed gas, including reference values ​​of parameters such as pressure, flow, and composition. Then another part of the mixed gas passes through its top and enters the circulation filter valve pipe 105 under the control of the high-speed electromagnetic drive valve 107, so that the circulation filter valve pipe 105 filters and purifies the mixed gas to remove possible impurity particles, moisture, etc., so as to improve the purity of the mixed gas, and then the treated gas is The mixed gas is delivered to the multi-stage mixing chamber 15, so as to facilitate a more refined mixing process later. After that, the model prediction controller 102 receives the mixed gas parameter information from the left end of the three-way transmission valve pipe 101 connected to the ratio, and calculates and analyzes it in combination with the current load condition and ambient temperature of the generator set as a whole. Then, under different gas sources, even if the pressure is the same, due to the difference in LPG composition, the model prediction controller 102 can accurately determine the effective components actually participating in the combustion based on the component monitoring data, thereby accurately calculating the required amount of gas and air, realizing accurate mixing ratio control, and predicting the optimal gas mixing ratio and flow demand under the current working conditions. After that, a control instruction is generated according to the prediction result, so that the generated control instruction , will act on the structures such as the proportional three-way guide valve pipe 101 and the high-speed electromagnetic drive valve 107, accurately adjust their opening and gas distribution ratio, so as to realize dynamic optimization control of the gas mixing process, so that when the propane content in the LPG increases, the model prediction controller 102 can appropriately reduce the gas intake and increase the air volume to ensure sufficient combustion. At the same time, the other mixed gas entering the pulse burner 104 through the high-precision feedback valve pipe 103 is subjected to combustion test, so that in the pulse burner 104, the gas composition regulator adjusts the incoming mixed gas composition according to the preset optimal combustion composition range or the instruction of the model prediction controller 102 to ensure the stability and efficiency of combustion, wherein the pressure and temperature in the combustion process are controlled. The parameters such as the degree are fed back to the model prediction controller 102 in real time through the high-precision feedback valve pipe 103. The model prediction controller 102 compares and analyzes the feedback data with the previous prediction results. When it is found that the actual combustion situation deviates from the expectation, such as the combustion pressure is too high or too low, the combustion efficiency does not meet the expectation, etc., the control command will be adjusted immediately, and the proportional three-way guide valve pipe 101 and the high-speed electromagnetic drive valve 107 will be adjusted again to change the flow rate, composition and distribution path of the mixed gas to correct the combustion process and return it to the optimal state. Then, the high-speed electromagnetic drive valve 107 is connected to the voltage stabilizer 1091, so that the voltage stabilizer 1091 is responsible for stabilizing the pressure of the mixed gas at the outlet of the high-speed electromagnetic drive valve 107.To avoid damage to subsequent components (such as the circulating filter valve pipe 105 and the multi-stage mixing chamber 15) due to excessive pressure fluctuations, thereby affecting the stable supply of the mixed gas, when an upward trend in the load is detected, the three-way communication valve pipe 101 and the high-speed electromagnetic drive valve 107 are adjusted in advance to increase the intake volume of gas and air and optimize the mixing ratio, so that the pulse burner 104 can output sufficient energy in time, avoid large fluctuations in the combustion pressure of the gas engine 4, and protect the life of the equipment. When the load change causes the combustion situation to deviate from the expectation, such as combustion pressure fluctuations or decreased combustion efficiency, the model prediction controller 102 immediately adjusts the control instructions again according to the feedback data, quickly corrects the mixing ratio and flow rate, and quickly restores the combustion process to stability, ensuring that the gas engine 4 runs smoothly under different loads. , wherein, during the operation of the overall device, the electric control safety valve 108 is used for safety monitoring. When the pressure of the overall device exceeds the preset safety threshold, the electric control safety valve 108 will automatically open and discharge part of the mixed gas to the safe area to reduce the pressure of the overall device and prevent dangerous situations such as explosion caused by excessive pressure. At the same time, when the overall device has a serious fault or receives an external emergency stop signal, the emergency shut-off valve 1090 will be quickly closed to completely cut off the supply of the mixed gas to ensure the safety of the overall device. The flow monitor 109 monitors the mixed gas flow through the pipeline in real time and transmits the flow data to the model prediction controller 102 so as to accurately control and manage the flow of the mixed gas to ensure that the overall device forms a flow balance and stable operation. ,

[0026] In the present invention, according to Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the regulating control component 11 includes: A dynamic flow distributor 110, a load pressurizing valve tube 111 and a microprocessor 112. The load pressurizing valve tube 111 is connected to the other side end surface of the multi-stage mixing chamber 15 through the dynamic flow distributor 110. A pressure sensor 113 is installed on the bottom side end of the load pressurizing valve tube 111. The bottom end of the load pressurizing valve tube 111 is connected to a mixer 117. An electrostatic mixing enhancer 116 and a gas composition monitoring sensor 115 are installed on the top side ends of the mixer 117.

[0027] The left and right ends of the mixer 117 are respectively connected to the first inlet pipe 1190 and the second inlet pipe 1191. The bottom of the mixer 117 is connected to a mixing uniformity monitor 119. The bottom of the mixing uniformity monitor 119 is installed with a mixing control feedback device 114. The side end of the mixer 117 is installed with a temperature sensor 118.

[0028] The side end of the first inlet pipe 1190 is connected to the preheating control pipe 19, and the side end of the preheating control pipe 19 is connected to the surface of the proportional adjustment controller 16. The side end of the second inlet pipe 1191 is connected to the volume control valve pipe 18, and the side end of the volume control valve pipe 18 is connected to the ultrasonic transducer 7, which is installed at the side end of the micro mixer 8.

[0029] In a specific solution, the mixed gas output from the multi-stage mixing chamber 15 enters the load pressurizing valve pipe 111 through the dynamic flow distributor 110, so that the dynamic flow distributor 110 distributes more mixed gas to the main combustion area of ​​the internal combustion chamber to provide sufficient energy output when the gas engine 4 is under high load, and appropriately reduces the mixed gas distributed to this area when the load is low, and guides part of the mixed gas to the pulse burner 104 to improve the overall efficiency and stability of the device. At the same time, the pressure sensor 113 is used to monitor the pressure of the mixed gas in the load pressurizing valve pipe 111 in real time, and the pressure data is transmitted to the microprocessor 112, so that the microprocessor 112 adjusts the load pressurizing valve pipe 111 according to the pressure data and the preset pressure range. The pressure of the mixed gas is controlled by adjusting the opening of the valve 11. When the pressure is lower than the set value, the valve opening is increased to allow more mixed gas to enter. When the pressure is higher than the set value, the valve opening is reduced to reduce the flow rate of the mixed gas, thereby ensuring that the mixed gas enters the mixer 117 at a stable and appropriate pressure to meet the combustion requirements under different working conditions. The mixed gas entering the mixer 117, in cooperation with the electrostatic mixing enhancer 116, applies an electrostatic field to charge the gas and air molecules in the mixed gas, thereby enhancing the interaction and collision probability between the molecules and promoting a more uniform mixing of the gas and air. At the same time, the gas composition monitoring sensor 115 monitors the composition of the mixed gas in the mixer 117 in real time and detects the ratio of the gas (such as propane, butane and other components in LPG) to the air. and the content of trace components that may affect combustion, and transmit the component data to the mixing control feedback device 114 and the above-mentioned model prediction controller 102, and at the same time use the temperature sensor 118 to monitor the temperature of the mixed gas, and synchronously transmit the monitoring data to the mixing control feedback device 114 and the model prediction controller 102, in addition, the mixing uniformity monitor 119 monitors the mixing uniformity of the mixed gas, evaluates the mixing effect by detecting the uniformity of the density or thermal conductivity component differences at different positions in the mixed gas, and feeds back the uniformity data to the mixing control feedback device 114, wherein the first inlet pipe 1190 introduces a path of gas into the mixer 117, and the preheating control pipe 19 connected to the side end thereof preheats the incoming gas, so that the preheating control pipe 19 is adjusted according to the ratio For example, the proportional control controller 16 receives instructions to accurately control the temperature of the gas entering the first inlet pipe 1190 by adjusting the flow rate of the heat exchange medium, so that the preheating temperature can be increased when a low-temperature environment is required, which is convenient for increasing the combustion characteristics of the mixed gas and improving the combustion efficiency. The proportional control controller 16 determines the appropriate preheating temperature according to the operating parameters of the overall device (such as load, ambient temperature, combustion efficiency, etc.) and the feedback data of the gas composition monitoring sensor 115 and the temperature sensor 118, and generates corresponding control instructions to send to the preheating control pipe 19. Then, the gas introduced into the second inlet pipe 1191 is flow-regulated by the volume control valve pipe 18, and the ultrasonic transducer 7 is used to generate high-frequency ultrasonic waves to cause the gas to vibrate and produce cavitation effects.Break up the macromolecular clusters and tiny droplets in the gas, further refine the gas, improve its mixing uniformity and reactivity with other mixed gases, and use the mixed control feedback device 114 to comprehensively analyze the state of the mixed gas according to the feedback data of the gas composition monitoring sensor 115, the temperature sensor 118 and the mixing uniformity monitor 119, and timely respond to adjust the intake parameters (such as temperature, flow rate, ultrasonic treatment intensity, etc.) of the first inlet pipe 1190 and the second inlet pipe 1191, and generate corresponding control instructions to send to the preheating control pipe 19 and the ultrasonic transducer 7 respectively, so as to realize precise control of the mixed gas mixing process.

[0030] In the present invention, according to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8 As shown, an intake valve chamber 2 is installed inside the top of the protective body 1, an oil delivery terminal 3 is installed on the top wall surface of the intake valve chamber 2, an intake pressure regulating valve 13 is installed at the bottom of the intake valve chamber 2, and the bottom of the intake pressure regulating valve 13 is connected to an intake control flow valve pipe 22.

[0031] The side end of the intake control flow valve tube 22 is connected to the premixing chamber 23 , and the premixing chamber 23 and the side end of the pulse burner 104 are connected.

[0032] The bottom end of the proportional regulation controller 16 is connected to the control pipe 14 , and the side end of the control pipe 14 is connected to the front end of the gas engine 4 .

[0033] In a specific solution, a protective body 1 is used to provide physical protection and structural support for the entire device, and the oil delivery end 3 is ready to deliver fuel to the intake valve chamber 2, so that the gas engine 4 is also in a startable state, and the internal fuel supply system is on standby. Then air enters through the entrance of the intake valve chamber 2. In the intake valve chamber 2, the oil delivery end 3 sprays oil into the intake air flow according to a predetermined amount and time, so that the oil begins to mix with the air in the intake valve chamber 2 to form a preliminary form of an oil-gas mixture. Then the intake pressure regulating valve 13 adjusts the incoming air pressure, and stabilizes the intake pressure within a suitable range according to the operating requirements of the overall device. The pressure-regulated air continues to flow downward with the oil and enters the intake control flow valve pipe 22. In the intake control flow valve pipe 22, the oil-gas mixture is further mixed evenly, and the flow is strictly controlled. Then the intake control flow valve pipe 22 accurately adjusts the flow of the oil-gas mixture according to the overall working conditions to ensure that the oil entering the premixing chamber 23 The flow rate of the mixture is stable and meets the combustion requirements. After entering the premixing chamber 23, the oil-gas mixture is mixed again with the gas entering the premixing chamber 23 from the connected proportional three-way guide valve pipe 101 and the high-precision feedback valve pipe 103 to form a mixed fuel that is more suitable for combustion in the pulse burner 104. The mixed fuel in the premixing chamber 23 is transported to the pulse burner 104, so that the pulse burner 104 uses pulse combustion to form a rapid combustion expansion and exhaust cycle to efficiently burn the mixed fuel. The high-temperature and high-pressure gas generated by the combustion then drives the components in the pulse burner 104 to move, generating mechanical energy or transferring energy through heat exchange and other methods. The synchronous proportion adjustment controller 16 controls the air intake, fuel supply or ignition timing of the gas engine 4 through the control pipe 14 according to the feedback data of the mixed control feedback device 114 and the above-mentioned model prediction controller 102, so as to optimize the combustion efficiency and operating performance of the overall device, so that the gas engine 4 can operate stably and output suitable power to drive the external generator to generate electricity.

[0034] The wiring diagram of the micro mixer 8, ultrasonic transducer 7, model predictive controller 102, pulse burner 104, flow monitor 109, voltage stabilizer 1091, dynamic flow distributor 110, microprocessor 112, pressure sensor 113, mixing control feedback device 114, gas composition monitoring sensor 115, electrostatic mixing enhancer 116, mixer 117, temperature sensor 118, mixing uniformity monitor 119 and proportional regulation controller 16 in the present invention is common knowledge in the art, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement are not explained in detail.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas mixing control device for an LPG generator set, characterized in that: Included are: A gas engine (4) is installed inside the protective body (1) and has an air intake end at the top thereof, and is used to form a power source to drive the entire device; A premixed vortex intake chamber (5), the top of which is connected to a ratio control controller (16) via an adaptive multi-source intake valve pipe (17), and is used to fully premix the incoming gas and air before entering the internal combustion chamber of the gas engine (4) through an internal vortex structure, thereby improving combustion efficiency; A proportional dynamic response component (10) is mounted on the inner side of the protective body (1) and is connected to the gas guide manifold (9) to dynamically adjust and control the gas mixing ratio under different load and ambient temperature changes; The regulating control component (11) has a top end connected to the multi-stage mixing chamber (15) and is used to arrange the multi-stage mixing chamber inside to gradually refine the mixing process of the gas and the air; The bottom end of the proportional adjustment controller (16) is connected to the air flow adjustment chamber (6) through the control valve pipe (20) and is used to control and adjust the mixing degree of the fuel gas and the air.

2. The LPG generator set gas mixing control device according to claim 1, characterized in that: The proportional dynamic response component (10) comprises: A proportional three-way guide valve tube (101), a high-speed electromagnetic drive valve (107), a model prediction controller (102) and a high-precision feedback valve tube (103) are connected; the left end of the proportional three-way guide valve tube (101) is connected to the top of the air guide manifold (9); the bottom end of the air guide manifold (9) is connected to a micro mixer (8); the right end of the proportional three-way guide valve tube (101) is connected to the model prediction controller (102); the right end of the high-precision feedback valve tube (103) is connected to the surface of the model prediction controller (102); and the bottom of the side end of the high-precision feedback valve tube (103) is connected to a pulse burner (104).

3. The LPG generator set gas mixing control device according to claim 2 is characterized in that: The side end of the pulse burner (104) is connected to an adaptive pressure regulating chamber (106) via a gas composition regulator, and the top end of the communicating proportional three-way guide valve pipe (101) is connected to a circulating filter valve pipe (105) via a high-speed electromagnetic drive valve (107), and the side end of the circulating filter valve pipe (105) is connected to the side end surface of the multi-stage mixing chamber (15).

4. The LPG generator set gas mixing control device according to claim 3 is characterized in that: The side end of the high-speed electromagnetic drive valve (107) is connected to a voltage stabilizer protector (1091) via a curved pipe, and the side end of the connection between the voltage stabilizer protector (1091) and the high-speed electromagnetic drive valve (107) is connected to an electrically controlled safety valve (108), and the side ends of the electrically controlled safety valve (108) are respectively installed with an emergency shut-off valve (1090) and a flow monitor (109).

5. The LPG generator set gas mixing control device according to claim 1, characterized in that: The regulating control component (11) comprises: A dynamic flow distributor (110), a load pressurizing valve tube (111) and a microprocessor (112); the load pressurizing valve tube (111) is connected to the other side end surface of the multi-stage mixing chamber (15) through the dynamic flow distributor (110); a pressure sensor (113) is installed at the bottom side end of the load pressurizing valve tube (111); the bottom end of the load pressurizing valve tube (111) is connected to a mixer (117); and an electrostatic mixing enhancer (116) and a gas composition monitoring sensor (115) are installed at the top side end of the mixer (117).

6. The LPG generator set gas mixing control device according to claim 5, characterized in that: The left and right ends of the mixer (117) are respectively connected to a first inlet pipe (1190) and a second inlet pipe (1191); the bottom of the mixer (117) is connected to a mixing uniformity monitor (119); the bottom of the mixing uniformity monitor (119) is installed with a mixing control feedback device (114); and a temperature sensor (118) is installed at a side end of the mixer (117).

7. The LPG generator set gas mixing control device according to claim 6, characterized in that: The side end of the first inlet pipe (1190) is connected to a preheating control pipe (19), and the side end of the preheating control pipe (19) is connected to the surface of the proportional control controller (16). The side end of the second inlet pipe (1191) is connected to a volume control valve pipe (18), and the side end of the volume control valve pipe (18) is connected to an ultrasonic transducer (7). The ultrasonic transducer (7) is installed at the side end of the micro mixer (8).

8. The LPG generator set gas mixing control device according to claim 1, characterized in that: An intake valve chamber (2) is installed inside the top of the protective body (1), an oil delivery end (3) is installed on the top wall surface of the intake valve chamber (2), an intake pressure regulating valve (13) is installed at the bottom of the intake valve chamber (2), and the bottom of the intake pressure regulating valve (13) is connected to an intake control flow valve pipe (22).

9. The LPG generator set gas mixing control device according to claim 8, characterized in that: The side end of the air intake control flow valve tube (22) is connected to a premixing chamber (23), and the premixing chamber (23) is connected to the side end of the pulse burner (104).

10. The LPG generator set gas mixing control device according to claim 1, characterized in that: The bottom end of the proportional adjustment controller (16) is connected to a control pipe (14), and the side end of the control pipe (14) is connected to the front end of the gas engine (4).

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