Natural gas supply device for industrial furnace

Abstract

The invention discloses a natural gas supply device for an industrial furnace, which relates to the technical field of gas supply systems for industrial furnaces, and comprises an annular guide rail which is arranged at the side end of a gas inlet flow regulation and control valve pipe in a sleeving manner and is used for driving an adjusting shaft and an ultrasonic generator to be positioned at the side end of a gas inlet pipeline to carry out ultrasonic frequency emission regulation and control, under the cooperation of the oxygen-containing regulation and control assembly, the oxygen content proportion in the natural gas in the oxygen-containing conveying pipe is rapidly corrected, the precise oxygen content needed by combustion of the industrial furnace is guaranteed, super-uniform mixing of natural gas and oxygen is integrally achieved, the incomplete combustion phenomenon caused by fluctuation of the oxygen content is reduced, and the heating effect and the product quality are improved; and under the cooperation of the ultrasonic adjusting assembly, more complex pipeline impurity conditions can be treated, so that emission parameters and reflection angles of self-adaptive automatic adjustment ultrasonic waves are formed, natural gas conveying is smoother, and therefore the combustion stability and heat efficiency of the industrial furnace are improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas supply systems for industrial furnaces, and in particular to a natural gas supply device for industrial furnaces. Background Art

[0002] Industrial furnaces are indispensable thermal processing equipment in many industrial fields such as steel, non-ferrous metals, machinery manufacturing, ceramics and other industries. It is mainly used for heating, smelting, heat treatment and other processes of various materials to change the organizational structure and performance of the materials to meet the manufacturing requirements of the products. In these industrial production processes, a large amount of heat energy is required, and natural gas, as a clean and efficient fossil energy, has become one of the main energy sources for industrial furnaces due to its high combustion calorific value and relatively clean and environmentally friendly combustion products. For example, in the steel rolling heating furnace of the steel industry, the high temperature generated by the combustion of natural gas can heat the steel billet evenly and reach the appropriate rolling temperature; in the ceramic firing process, the high temperature environment in the industrial furnace is maintained by the combustion of natural gas, which promotes physical and chemical changes in the ceramic body and finally forms high-quality ceramic products.

[0003] At present, in the natural gas supply operation, during the peak gas usage period, the natural gas source pressure will fluctuate, resulting in unstable combustion of the industrial furnace, affecting the heating effect and product quality, and impurities, moisture, etc. in the pipeline system will clog the valve, resulting in the inability to perform accurate gas supply operations in real time according to the actual use of the industrial furnace. Therefore, it is necessary to propose a natural gas supply device for industrial furnaces. Summary of the invention

[0004] The purpose of the present invention is to provide a natural gas supply device for an industrial furnace to solve the problem proposed in the above background technology that during the natural gas supply operation, the natural gas source pressure will fluctuate during the peak gas usage period, resulting in unstable combustion of the industrial furnace, affecting the heating effect and product quality, and impurities, moisture, etc. in the pipeline system will clog the valve, resulting in the inability to perform accurate gas supply operations in real time according to the actual use of the industrial furnace.

[0005] To achieve the above object, the present invention provides the following technical solution: a natural gas supply device for an industrial furnace, comprising: The annular guide rail is sleeved and installed on the side end of the intake flow control valve pipe, and is used to drive the adjustment shaft and the ultrasonic generator located at the side end of the intake pipe to perform ultrasonic frequency emission control; The metering control distribution gas supply chamber is connected and installed at the side end of the air intake pipeline, and is used for its built-in laser spectrum analysis device to monitor the mixing ratio of the natural gas supply process in real time; The oxygen-containing control component is connected to the input end of the metering control distribution gas supply chamber, and is used to form a signal feedback connection with the temperature control system of the industrial furnace through the built-in oxygen sensor, and use an external PLC controller to ensure the accurate proportion of the oxygen content of the natural gas delivered by the metering control distribution gas supply chamber; Ultrasonic wave regulating components, which are installed in multiple groups on the outside of the air intake pipe and related pipes according to the needs, are used to receive and reflect the high-frequency vibration waves emitted by the ultrasonic generator to the inside of the pipes in the corresponding area when necessary, based on the monitoring feedback of multiple groups of pressure sensors installed inside the pipes, so that impurities fall off and are discharged with the airflow; The input pipeline regulating component is connected to the side end of the three-way valve pipe and is used to transport the regulated natural gas to a preset position according to the actual needs of the combustion chamber of the industrial furnace.

[0006] Preferably, the oxygen-containing regulating component comprises: An oxygen-containing delivery pipe, a bellows, a redundant oxygen sensor array, a first micro high-precision electric regulating valve, a connecting pipe and an oxygen inlet valve pipe. The oxygen-containing delivery pipe is composed of a mixing chamber, a spiral guide vane and a porous partition. After the natural gas and oxygen enter the mixing chamber, a complex swirl and turbulent mixing state is formed under the action of the guide vane. The porous partition further disrupts the airflow so that the oxygen and natural gas can be ultra-uniformly mixed in a very short time. The connecting pipe is connected through the bellows, the redundant oxygen sensor array, the first micro high-precision electric regulating valve and the oxygen-containing delivery pipe. The redundant oxygen sensor array is built-in and installed inside the bottom end of the connecting pipe to improve the accuracy and reliability of oxygen content detection. The first micro high-precision electric regulating valve is installed at the bottom side end of the connecting pipe to finely and accurately adjust the oxygen flow rate, so that the oxygen content ratio in the natural gas in the oxygen-containing delivery pipe can be quickly corrected.

[0007] Preferably, the side end of the oxygen-containing delivery pipe is connected to an emergency delivery pipeline, the top of the emergency delivery pipeline is connected to a flow stabilizer, the top of the flow stabilizer is connected to a second micro-high-precision electric regulating valve, and the top of the second micro-high-precision electric regulating valve is connected to a spare natural gas delivery connecting pipeline.

[0008] Preferably, the top end of the standby natural gas transmission connecting pipeline is connected to a regulating valve pipe, a pressure regulating valve is installed on the side end of the regulating valve pipe, and the side end of the pressure regulating valve is connected to a safety vent pipeline.

[0009] Preferably, the ultrasonic adjustment component includes: The hoop connecting ring frame, the annular electromagnetic guide rail, the annular sliding track groove and the magnetic connection sliding positioning, the hoop connecting ring frame is sleeved on the outside of the pipe wall of each pipeline, the side end surface of the annular electromagnetic guide rail and the hoop connecting ring frame form a fastening connection, and the magnetic connection sliding positioning is located inside the annular electromagnetic guide rail through the annular sliding track groove to form a positioning sliding adjustment.

[0010] Preferably, the side end of the magnetically connected sliding positioning is fastened to a side frame, a first position control motor is installed on the side end of the side frame, a second position control motor is installed on the side end of the first position control motor through a connecting column, an ultrasonic monitoring sensor is installed on the side end of the second position control motor, and the side end of the ultrasonic monitoring sensor is connected to a first rotation adjustment motor box.

[0011] Preferably, the bottom of the first rotation adjustment motor box is rotatably connected to a double-open-side rod, and the second rotation adjustment motor box and a synchronous rotating part are respectively installed at the left and right ends of the bottom of the double-open-side rod, and the output end of the second rotation adjustment motor box and the side of the synchronous rotating part are fastened with an ultrasonic frequency reflection focusing arc plate.

[0012] Preferably, the input pipeline regulating component comprises: The guiding and regulating pipeline, the waste impurity discharge valve pipe, the flow distributor, the pressure adaptive stabilizer and the distribution duct, the guiding and regulating pipeline is connected to the impurity pre-separation recovery device through the three-way valve pipe, the side end of the impurity pre-separation recovery device is connected to the conveying guide, and the bottom end of the conveying guide is connected to the output end of the metering control distribution air supply chamber.

[0013] Preferably, the waste impurity discharge valve pipe is located at the side end of the guiding and regulating pipeline to form a control connection for discharging impurities carried by the airflow. The flow distributor is connected to the guiding and regulating pipeline to accurately distribute the natural gas to each sub-channel under the instruction of an external PLC controller, and monitor the flow of each sub-channel in real time to ensure that the total flow and the flow of each area meet the preset requirements. The pressure adaptive stabilizer is installed on the side end of the flow distributor and is connected to the distribution conduit. The side end of the distribution conduit is equipped with an early warning end. The side end of the distribution conduit is connected with a branch guiding valve pipe. The side end of the branch guiding valve pipe is equipped with a pipeline self-cleaning actuator. The branch guiding valve pipe is connected to each external branch pipe.

[0014] Preferably, the side end of the air intake flow regulating valve pipe is connected to the natural gas intake end, and a natural gas filter dehydrator is installed on the side end of the natural gas intake end. The bottom end of the metering control distribution air supply chamber and the bottom end of the conveying guide are connected to a pressure regulating pipeline, and the top of the pressure regulating pipeline is connected to a third micro high-precision electric regulating valve, and the top of the third micro high-precision electric regulating valve is connected to the other side end of the three-way valve pipe, and a pressure regulator is installed on the side end of the pressure regulating pipeline, and an ejector is installed on the side end of the pressure regulator.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, natural gas enters the metering control distribution gas supply chamber through the air intake pipeline in cooperation with the oxygen-containing control component, so that the natural gas is transported to the mixing chamber of the oxygen-containing delivery pipe under the action of the circulation pipeline in the metering control distribution gas supply chamber, and oxygen enters through the oxygen intake valve pipe. The mixed gas flows to the metering control distribution gas supply chamber again through the oxygen-containing delivery pipe in cooperation with the circulation pipeline to supply gas to the industrial furnace. In this process, once the redundant oxygen sensor array detects that the oxygen content deviates from the preset value, the signal is immediately transmitted to the external PLC controller, so that the external PLC controller accurately controls the opening of the first micro high-precision electric regulating valve according to the received oxygen content signal. When the oxygen content is high, the external PLC controller will reduce the opening of the first micro high-precision electric regulating valve to reduce the oxygen inflow. Conversely, when the oxygen content is low, the opening will be increased to increase the oxygen supply, thereby quickly correcting the oxygen content ratio in the natural gas in the oxygen-containing transmission pipe, ensuring the precise oxygen content required for the combustion of the industrial furnace, and achieving an overall ultra-uniform mixing of natural gas and oxygen, making the subsequent combustion process of the industrial furnace more stable, reducing the incomplete combustion caused by oxygen content fluctuations, improving the heating effect and product quality, and in the event of an emergency with abnormal gas supply, being able to quickly switch to the backup natural gas supply to ensure that the backup natural gas can be supplied to the industrial furnace at a stable flow rate and pressure.

[0016] 2. In the present invention, with the cooperation of the oxygen-containing control component, when the redundant oxygen sensor array detects a serious abnormality in the oxygen content or a sudden change in the pressure in the oxygen-containing delivery pipe, the emergency delivery pipeline is activated, allowing the backup natural gas to enter through the backup natural gas delivery connecting pipeline. After the flow is stabilized by the flow stabilizer, the second micro-high-precision electric control valve fine-tunes the flow according to the instruction of the external PLC controller to ensure that the backup natural gas can enter the control valve pipe at an appropriate flow rate, so that the pressure control valve on the control valve pipe monitors and controls the pressure of the backup natural gas, so that the pressure meets the emergency gas supply requirements and is then delivered to the oxygen-containing delivery pipe. When the pressure is too high, the pressure control valve is opened appropriately to discharge excess gas into the safety venting pipeline to ensure the safety and stability of the emergency gas supply.

[0017] 3. In the present invention, with the cooperation of the ultrasonic adjustment component and according to the monitoring feedback of the pressure sensor, when the ultrasonic monitoring sensor detects that there is impurity accumulation in the pipeline and the situation that needs to be cleaned, the first rotating adjustment motor box is started to drive the double-opening rod to adjust the pitch angle of the ultrasonic frequency reflection focusing arc plate, and the second rotating adjustment motor box and the synchronous rotating part work together to accurately adjust the horizontal angle of the ultrasonic frequency reflection focusing arc plate, so that the ultrasonic frequency reflection focusing arc plate can accurately reflect the high-frequency vibration wave emitted by the ultrasonic generator to the area where the impurities are located inside the pipeline, and the high-frequency vibration wave propagates in the pipeline, so that the impurities are affected. The monitoring position can be flexibly adjusted according to the needs, and the pipeline can be monitored in all directions without blind spots. The abnormal conditions of various parts of the pipeline can be discovered in time, which improves the accuracy and timeliness of fault detection. It can effectively prevent gas supply failures or safety accidents caused by local pipeline problems, and can handle more complex pipeline impurity conditions, so as to form an adaptive automatic adjustment of ultrasonic emission parameters and reflection angles, and can always work with the best impurity removal effect, ensuring higher cleanliness in the pipeline and smoother natural gas transportation, thereby improving the combustion stability and thermal efficiency of the industrial furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of a natural gas supply device for an industrial furnace according to the present invention; Figure 2 It is a schematic structural diagram of a natural gas supply device for an industrial furnace from a side view according to the present invention; Figure 3 This is a schematic structural diagram of an oxygen-containing control component in a natural gas supply device for an industrial furnace according to the present invention; Figure 4 It is a structural schematic diagram of an input pipeline control component in a natural gas supply device for an industrial furnace of the present invention; Figure 5 The invention relates to a natural gas supply device for an industrial furnace Figure 4 A schematic diagram of the enlarged structure at point A; Figure 6 This is a schematic diagram of the structure of an ultrasonic regulating component in a natural gas supply device for an industrial furnace according to the present invention; Figure 7 The present invention is a partial structural schematic diagram of an ultrasonic regulating component in a natural gas supply device for an industrial furnace.

[0019] In the figure: 1. Natural gas inlet end; 2. Natural gas filter dehydrator; 3. Inlet flow control valve pipe; 4. Inlet pipeline; 5. Ultrasonic adjustment component; 51. Hoop connection ring frame; 52. Annular electromagnetic guide rail; 53. Annular sliding track groove; 54. Magnetic connection sliding positioning; 55. Side frame; 56. First position control motor; 57. Ultrasonic monitoring sensor; 58. Second position control motor; 59. Double open side rod; 590. Second rotation control motor box; 591. Synchronous rotating part; 592. Ultrasonic frequency reflection focusing arc plate; 593. First rotation control motor box; 6. Oxygen content control component; 61. Oxygen content delivery pipe; 62. Bellows; 63. Redundant oxygen sensor array; 64. Connecting pipe; 65. Oxygen inlet valve pipe; 66. First micro high-precision electric control Throttle valve; 67, emergency delivery pipeline; 68, flow stabilizer; 69, second micro high-precision electric regulating valve; 690, regulating valve pipe; 691, pressure regulating valve; 692, safe venting pipeline; 7, metering control distribution gas supply chamber; 8, delivery guide; 9, input pipeline regulation component; 91, guide regulation pipeline; 92, waste impurity discharge valve pipe; 93, flow distributor; 94, pressure adaptive stabilizer; 95, distribution duct; 96, early warning end; 97, branch guide valve pipe; 98, pipeline self-cleaning actuator; 10, three-way valve pipe; 11, third micro high-precision electric regulating valve; 12, pressurization regulator; 13, impurity pre-separation recovery device; 14, ejector; 15, pressure regulating pipeline; 16, annular guide rail; 17, adjustment shaft; 18, ultrasonic generator. 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 - Figure 7 Shown: A natural gas supply device for an industrial furnace, comprising: The annular guide rail 16 is sleeved and installed on the side end of the intake flow control valve pipe 3, and is used to drive the adjustment shaft 17 and the ultrasonic generator 18 located at the side end of the intake pipe 4 to perform ultrasonic frequency emission control; The metering control distribution gas supply chamber 7 is connected and installed at the side end of the gas inlet pipeline 4, and is used for its built-in laser spectrum analysis device to monitor the mixing ratio of the natural gas supply process in real time; The oxygen-containing control component 6 is connected to the input end of the metering control distribution gas supply chamber 7, and is used to form a signal feedback connection with the temperature control system of the industrial furnace through the built-in oxygen sensor, and use an external PLC controller to ensure the accurate proportion of the oxygen content of the natural gas delivered by the metering control distribution gas supply chamber 7; The ultrasonic regulating assembly 5 is formed into multiple groups according to the needs and installed outside the air intake pipe 4 and related pipes, and is used to receive and reflect the high-frequency vibration waves emitted by the ultrasonic generator 18 to the inside of the pipe in the corresponding area according to the monitoring feedback of the multiple groups of pressure sensors installed inside the pipe when necessary, so that impurities fall off and are discharged with the airflow; The input pipeline regulating component 9 is connected to the side end of the three-way valve pipe 10 and is used to transport the regulated natural gas to a preset position according to the actual demand of the combustion chamber of the industrial furnace.

[0022] In the specific scheme, natural gas first enters from the natural gas inlet end 1, passes through the natural gas filter dehydrator 2, removes moisture, solid particle impurities, etc., and preliminarily purifies the natural gas to prevent impurities from damaging subsequent equipment. The purified natural gas enters the intake flow control valve pipe 3, and the intake flow control valve pipe 3 accurately controls the flow of natural gas according to the needs of the industrial furnace to ensure that the amount of natural gas entering the industrial furnace meets the combustion process requirements. At this time, the annular guide rail 16 is started, which drives the adjustment shaft 17 and the ultrasonic generator 18 located at the side end of the intake pipeline 4 to operate, so that the ultrasonic generator 18 emits ultrasonic frequencies and can be adjusted as needed. In the process of intake flow control, the ultrasonic wave produces a certain disturbance to the natural gas flow. The oxygen sensor in the oxygen-containing control component 6 is connected with the temperature control system of the industrial furnace to form a signal feedback combination. The external PLC controller accurately controls the components in the oxygen-containing control component according to these feedback signals to ensure the accurate proportion of oxygen content in the natural gas delivered to the metering control distribution gas supply chamber 7. In this process, the laser spectroscopy analyzer built into the metering control distribution gas supply chamber 7 monitors the mixing ratio of the natural gas in the gas supply process in real time, including the ratio of natural gas to air. For example, when the temperature of the industrial furnace rises and the combustion intensity needs to be reduced, the external PLC controller will reduce the oxygen supply ratio according to the temperature signal and the oxygen sensor signal, so that the natural gas combustion is more stable and energy-saving. Secondly, when the natural gas is transported in the air intake pipeline 4 and related pipelines, the ultrasonic adjustment component 5 is formed into multiple groups installed on the outside of the pipeline according to the needs, and multiple groups of pressure sensors are installed inside the pipeline, so that the pressure sensor monitors the pressure changes in the pipeline in real time. When the pressure sensor detects abnormal pressure fluctuations (impurities accumulate inside the pipeline causing poor airflow), it will feed back the signal to the ultrasonic adjustment component 5, and the ultrasonic generator 18 will emit a high-frequency vibration wave, which is received by the ultrasonic adjustment component 5 and reflected to the inside of the pipeline in the corresponding area. The high-frequency vibration The dynamic wave propagates in the pipeline, causing the impurities attached to the inner wall of the pipeline to fall off due to the vibration and be discharged with the airflow, thereby maintaining the smooth flow of the pipeline, reducing the risk of pipeline blockage caused by impurity accumulation, and ensuring a stable supply of natural gas. The processed natural gas then enters the input pipeline control component 9. The input pipeline control component 9 is based on the actual needs of the combustion chamber of the industrial furnace, so that the flow distributor 93 and other components in the input pipeline control component 9 accurately transport the natural gas to the preset position, so that according to the different combustion areas of the industrial furnace, such as the preheating area, the high-temperature heating area, etc., there are different requirements for the flow and pressure of the natural gas. The input pipeline control component 9 can be accurately distributed according to these differences in requirements, so that the natural gas can achieve the best combustion effect in each combustion area.Improve the overall thermal efficiency and heating quality of industrial furnaces.

[0023] Embodiment 1: In the present invention, according to Figure 1 - Figure 3 As shown, the oxygen-containing regulating component 6 includes: The oxygen-containing delivery pipe 61, the bellows 62, the redundant oxygen sensor array 63, the first micro high-precision electric regulating valve 66, the connecting pipe 64 and the oxygen inlet valve pipe 65. The oxygen-containing delivery pipe 61 is composed of a mixing chamber, a spiral guide vane and a porous partition. After the natural gas and oxygen enter the mixing chamber, under the action of the guide vane, a complex swirl and turbulent mixing state is formed. The porous partition further disrupts the airflow, so that the oxygen and natural gas can be ultra-uniformly mixed in a very short time. The connecting pipe 64 is connected to the oxygen-containing delivery pipe 61 through the bellows 62, the redundant oxygen sensor array 63, the first micro high-precision electric regulating valve 66. The redundant oxygen sensor array 63 is built-in and installed inside the bottom end of the connecting pipe 64 to improve the accuracy and reliability of oxygen content detection. The first micro high-precision electric regulating valve 66 is installed at the bottom side end of the connecting pipe 64 to finely and accurately adjust the oxygen flow rate, so that the oxygen content ratio of the natural gas in the oxygen-containing delivery pipe 61 can be quickly corrected.

[0024] The side end of the oxygen-containing delivery pipe 61 is connected to an emergency delivery pipeline 67, the top of the emergency delivery pipeline 67 is connected to a flow stabilizer 68, the top of the flow stabilizer 68 is connected to a second micro-high-precision electric regulating valve 69, and the top of the second micro-high-precision electric regulating valve 69 is connected to a spare natural gas delivery connecting pipeline.

[0025] The top end of the standby natural gas transmission connecting pipeline is connected to a regulating valve pipe 690 , a pressure regulating valve 691 is installed at the side end of the regulating valve pipe 690 , and a safety venting pipeline 692 is connected to the side end of the pressure regulating valve 691 .

[0026] In a specific scheme, when the industrial furnace is operating normally, natural gas enters the metering control distribution gas supply chamber 7 through the air intake pipeline 4, so that the natural gas is transported to the mixing chamber of the oxygen-containing delivery pipe 61 under the action of the circulation pipeline in the metering control distribution gas supply chamber 7, and oxygen enters through the oxygen intake valve pipe 65. In the mixing chamber, natural gas and oxygen form a strong vortex under the action of the spiral guide blades. After preliminary mixing, the porous partition further disrupts the airflow, so that the two can be ultra-uniformly mixed in a very short time. The mixed gas flows to the metering control distribution gas supply chamber 7 again through the oxygen-containing delivery pipe 61 in cooperation with the circulation pipeline, and is used to supply gas to the industrial furnace. In this process The redundant oxygen sensor array 63 is composed of a plurality of oxygen sensors using different measurement principles. By comprehensively analyzing and comparing the data of these sensors, abnormal data is eliminated to ensure the accuracy and reliability of oxygen content detection. It is used to monitor the oxygen content in the mixed gas in real time. Once a deviation between the oxygen content and the preset value is detected, the signal is immediately transmitted to the external PLC controller, so that the external PLC controller accurately controls the opening of the first micro-high-precision electric regulating valve 66 according to the received oxygen content signal. When the oxygen content is high, the external PLC controller will reduce the opening of the first micro-high-precision electric regulating valve 66 to reduce the oxygen inflow. On the contrary, when the oxygen content is low, the external PLC controller will reduce the opening of the first micro-high-precision electric regulating valve 66 to reduce the oxygen inflow. When the oxygen content in the natural gas in the oxygen-containing delivery pipe 61 is low, the opening is increased to increase the oxygen supply, thereby quickly correcting the oxygen content ratio in the natural gas in the oxygen-containing delivery pipe 61 to ensure the accurate oxygen content required for the combustion of the industrial furnace. When the redundant oxygen sensor array 63 detects that the oxygen content is seriously abnormal or the pressure in the oxygen-containing delivery pipe 61 changes suddenly, the emergency delivery pipeline 67 is activated to allow the backup natural gas to enter through the backup natural gas delivery connecting pipeline. After the flow rate is stabilized by the flow stabilizer 68, the second micro-high-precision electric regulating valve 69 performs flow fine-tuning according to the command of the external PLC controller to ensure that the backup natural gas can enter the regulating valve pipe 690 at an appropriate flow rate, so that the pressure regulating valve on the regulating valve pipe 690 691 monitors and regulates the pressure of the backup natural gas, and after its pressure meets the emergency gas supply requirements, it is transported to the oxygen-containing delivery pipe 61. When the pressure is too high, the pressure control valve 691 opens appropriately to discharge the excess gas into the safety vent pipeline 692 to ensure the safety and stability of the emergency gas supply. The overall ultra-uniform mixing of natural gas and oxygen is achieved, making the subsequent combustion process of the industrial furnace more stable, reducing the incomplete combustion caused by fluctuations in oxygen content, improving the heating effect and product quality, and in the event of an abnormal gas supply emergency, it can quickly switch to the backup natural gas supply to ensure that the backup natural gas can be supplied to the industrial furnace at a stable flow and pressure.

[0027] Embodiment 2: In the present invention, according to Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the ultrasonic adjustment component 5 includes: The hoop connecting ring frame 51, the annular electromagnetic guide rail 52, the annular sliding track groove 53 and the magnetic connection sliding positioning 54, the hoop connecting ring frame 51 is sleeved on the outside of the pipe wall of each pipeline, the side end surface of the annular electromagnetic guide rail 52 and the hoop connecting ring frame 51 form a fastening connection, and the magnetic connection sliding positioning 54 is located inside the annular electromagnetic guide rail 52 through the annular sliding track groove 53 to form a positioning sliding adjustment.

[0028] The side end of the magnetically connected sliding positioning 54 is fastened to a side frame 55, and a first position control motor 56 is installed on the side end of the side frame 55. A second position control motor 58 is installed on the side end of the first position control motor 56 through a connecting column. An ultrasonic monitoring sensor 57 is installed on the side end of the second position control motor 58, and a first rotation adjustment motor box 593 is connected to the side end of the ultrasonic monitoring sensor 57.

[0029] The bottom of the first rotating and adjusting motor box 593 is rotatably connected to a double-open-side rod 59, and the second rotating and adjusting motor box 590 and the synchronous rotating part 591 are respectively installed at the left and right ends of the bottom of the double-open-side rod 59, and the output end of the second rotating and adjusting motor box 590 and the side of the synchronous rotating part 591 are fastened with an ultrasonic frequency reflecting focusing arc plate 592.

[0030] In a specific solution, according to the monitoring feedback of the pressure sensor, the first azimuth control motor 56 and the second azimuth control motor 58 work together to adjust the monitoring azimuth of the ultrasonic monitoring sensor 57 so that it can fully cover the target pipeline area. Then, the ultrasonic monitoring sensor 57 receives and analyzes the ultrasonic signal emitted by the ultrasonic generator 18, and monitors the internal conditions of the pipeline by analyzing the characteristics of the reflected signal (whether there is impurity accumulation, changes in pipe wall thickness, cracks or local deformation, etc.), and the monitoring data is transmitted to the external PLC of the industrial furnace in real time. Controller, when the ultrasonic monitoring sensor 57 detects that there are impurities accumulated in the pipeline and the situation that needs to be cleaned, the first rotating adjustment motor box 593 is started, driving the double-opening rod 59 to adjust the pitch angle of the ultrasonic frequency reflection focusing arc plate 592, and the second rotating adjustment motor box 590 and the synchronous rotating member 591 work together to accurately adjust the horizontal angle of the ultrasonic frequency reflection focusing arc plate 592, so that the ultrasonic frequency reflection focusing arc plate 592 can accurately reflect the high-frequency vibration waves emitted by the ultrasonic generator 18 to the area where the impurities are located inside the pipeline. The high-frequency vibration waves propagate in the pipeline, causing the impurities to fall off due to vibration, impact, etc., and the fallen impurities are discharged from the pipeline with the natural gas flow. In the process of removing impurities, the ultrasonic monitoring sensor 57 continuously monitors the changes in the conditions in the pipeline. According to the monitoring results, the angle of the ultrasonic frequency reflection focusing arc plate 592 and the emission parameters of the ultrasonic wave are dynamically adjusted to ensure the best impurity removal effect until the impurities in the pipeline are cleaned up. The monitoring position can be flexibly adjusted as needed, and the pipeline can be monitored in all directions without blind spots. The abnormal conditions of various parts of the pipeline can be discovered in time, which improves the accuracy and timeliness of fault detection, effectively prevents gas supply failures or safety accidents caused by local pipeline problems, and can handle more complex pipeline impurity conditions, so as to form an adaptive automatic adjustment of the ultrasonic emission parameters and reflection angle, and can always work with the best impurity removal effect, ensure a higher cleanliness in the pipeline, make the natural gas transportation smoother, thereby improving the combustion stability and thermal efficiency of the industrial furnace.

[0031] Embodiment 3: In the present invention, according to Figure 1 , Figure 2 and Figure 4 As shown, the input pipeline control component 9 includes: The guiding and regulating pipeline 91, the waste impurity discharge valve pipe 92, the flow distributor 93, the pressure adaptive stabilizer 94 and the distribution conduit 95, the guiding and regulating pipeline 91 is connected to the impurity pre-separation recovery device 13 through the three-way valve pipe 10, the side end of the impurity pre-separation recovery device 13 is connected to the conveying guide 8, and the bottom end of the conveying guide 8 is connected to the output end of the metering control distribution air supply chamber 7.

[0032] The waste impurity discharge valve pipe 92 is located at the side end of the guide and control pipeline 91 to form a control connection for discharging impurities carried by the airflow. The flow distributor 93 is connected to the guide and control pipeline 91 to accurately distribute the natural gas to each sub-channel under the instruction of the external PLC controller, and monitor the flow of each sub-channel in real time to ensure that the total flow and the flow of each area meet the preset requirements. The pressure adaptive stabilizer 94 is installed at the side end of the flow distributor 93 and is connected to the distribution conduit 95. The side end of the distribution conduit 95 is installed with an early warning end 96. The side end of the distribution conduit 95 is connected with a branch guide valve pipe 97. The side end of the branch guide valve pipe 97 is installed with a pipeline self-cleaning actuator 98. The branch guide valve pipe 97 is connected to each external branch pipe.

[0033] The side end of the intake flow control valve tube 3 is connected to the natural gas intake end 1, and the side end of the natural gas intake end 1 is installed with a natural gas filter dehydrator 2. The bottom end of the metering control distribution gas supply chamber 7 is connected to a pressure control pipeline 15, and the top of the pressure control pipeline 15 is connected to a third micro high-precision electric regulating valve 11. The top of the third micro high-precision electric regulating valve 11 is connected to the other side end of the three-way valve tube 10. A pressure regulator 12 is installed on the side end of the pressure control pipeline 15, and an ejector 14 is installed on the side end of the pressure regulator 12.

[0034] In a specific scheme, the natural gas after proportional adjustment from the metering control distribution gas supply chamber 7 is output through the three-way valve pipe 10 and enters the impurity pre-separation recovery device 13. In the impurity pre-separation recovery device 13, the particulate impurities in the natural gas are further separated by the centrifugal force separation principle. Then the natural gas enters the guide control pipeline 91. In the guide control pipeline 91, the waste impurity discharge valve pipe 92 discharges a small amount of impurities carried with the air flow according to the feedback of the pressure sensor to prevent the accumulation of impurities in the pipeline. Then the natural gas enters the flow distributor 93. Under the instruction of the external PLC controller, the flow distributor 93 accurately distributes the natural gas according to the requirements of different combustion areas or process stages of the industrial furnace. The gas is distributed to each sub-channel. During the distribution process, the flow distributor 93 monitors the flow of each sub-channel in real time and feeds back the data to the external PLC controller. The external PLC controller dynamically adjusts the opening of each sub-channel according to the preset requirements and actual feedback data to ensure that the total flow and the flow of each area meet the requirements. The natural gas after flow distribution enters the pressure adaptive stabilizer 94. The pressure adaptive stabilizer 94 senses the pressure change of natural gas through the internal pressure sensor. When the pressure fluctuates due to changes in the combustion state of the industrial furnace or the start and stop of other gas-using equipment, the pressure adaptive stabilizer 94 automatically adjusts the internal buffer chamber volume or stabilizes the output of natural gas by adjusting the valve opening, etc. The pressure is adjusted so that the natural gas enters the distribution conduit 95 at a stable pressure. In the distribution conduit 95, the warning terminal 96 monitors the pressure, flow and other parameters of the natural gas in real time. Once an abnormality occurs, such as too high or too low pressure, sudden flow, etc., a warning signal will be immediately sent to the external PLC controller. Then the natural gas is distributed to the external branch pipes through the branch guide valve pipe 97 to supply gas to various gas-using parts of the industrial furnace. In the branch guide valve pipe 97, the pipeline self-cleaning actuator 98 will clean and maintain the branch pipeline according to the preset time interval or pressure loss to prevent pipeline blockage. Then the pressure control pipeline 15 connected to the bottom end of the metering control distribution gas supply chamber 7 is controlled during the entire gas supply process. To assist in pressure regulation, when the pressure fluctuates slightly, the third micro-high-precision electric regulating valve 11 at the top of the pressure regulating pipeline 15 fine-tunes the natural gas flow in the pressure regulating pipeline 15 according to the instructions of the external PLC controller, thereby affecting the pressure distribution of the entire gas supply system. Then, when encountering a large change in pressure demand or an emergency situation, the ejector 14 is used to suck and compress the low-pressure natural gas to achieve local pressure increase, and the natural gas is pressurized by the pressure regulator 12. After that, it is mixed evenly from the three-way valve pipe 10 in cooperation with the mixer connected to the side of the third micro-high-precision electric regulating valve 11 and then delivered to the above-mentioned input pipeline regulating component 9.

[0035] The wiring diagram of the natural gas filter dehydrator 2, ultrasonic monitoring sensor 57, first position control motor 56, second position control motor 58, second rotation control motor box 590, first rotation control motor box 593, redundant oxygen sensor array 63, flow stabilizer 68, flow distributor 93, pressure adaptive stabilizer 94, pipeline self-cleaning actuator 98, pressurization regulator 12, impurity pre-separation recovery device 13, ejector 14, ultrasonic generator 18, pressure sensor, laser spectroscopy analysis device and built-in oxygen sensor in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring layout are not explained in detail.

[0036] 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 natural gas supply device for an industrial furnace, characterized in that: Included are: An annular guide rail (16) is sleeved and mounted on the side end of the intake flow control valve pipe (3) and is used to drive the adjustment shaft (17) and the ultrasonic generator (18) located on the side end of the intake pipe (4) to perform ultrasonic frequency emission control; A metering control distribution gas supply chamber (7) which is connected and installed at the side end of the gas inlet pipeline (4) and is used for a built-in laser spectrum analysis device to monitor the mixing ratio of the natural gas in real time during the gas supply process; The oxygen content regulating component (6) is connected to the input end of the metering control distribution gas supply chamber (7) and is used to form a signal feedback connection with the temperature control system of the industrial furnace through a built-in oxygen sensor, and to ensure the accurate proportion of the oxygen content of the natural gas delivered by the metering control distribution gas supply chamber (7) by using an external PLC controller; Ultrasonic wave regulating components (5) are formed into multiple groups according to needs and installed outside the air intake pipeline (4) and related pipelines, and are used to receive and reflect the high-frequency vibration waves emitted by the ultrasonic generator (18) to the inside of the pipeline in the corresponding area when necessary based on the monitoring feedback of multiple groups of pressure sensors installed inside the pipeline, so that impurities fall off and are discharged with the air flow; The input pipeline regulating component (9) is connected to the side end of the three-way valve pipe (10) and is used to transport the regulated natural gas to a preset position according to the actual demand of the combustion chamber of the industrial furnace.

2. The natural gas supply device for an industrial furnace according to claim 1, characterized in that: The oxygen-containing regulating component (6) comprises: An oxygen delivery pipe (61), a bellows (62), a redundant oxygen sensor array (63), a first micro high-precision electric regulating valve (66), a connecting pipe (64) and an oxygen inlet valve pipe (65), wherein the oxygen delivery pipe (61) is composed of a mixing chamber, a spiral guide vane and a porous baffle, and is used to form a complex swirl and turbulent mixing state under the action of the guide vane after the natural gas and oxygen enter the mixing chamber, and the porous baffle further disrupts the airflow, so that the oxygen and natural gas can be ultra-uniformly mixed in a very short time, and the connecting pipe (64) is connected through The bellows (62), the redundant oxygen sensor array (63), the first micro high-precision electric regulating valve (66) and the oxygen-containing delivery pipe (61) are connected to each other. The redundant oxygen sensor array (63) is installed inside the bottom end of the connecting pipe (64) to improve the accuracy and reliability of oxygen content detection. The first micro high-precision electric regulating valve (66) is installed at the bottom side end of the connecting pipe (64) to finely and accurately adjust the oxygen flow rate, so that the oxygen content ratio of the natural gas in the oxygen-containing delivery pipe (61) can be quickly corrected.

3. The natural gas supply device for an industrial furnace according to claim 2, characterized in that: The side end of the oxygen-containing delivery pipe (61) is connected to an emergency delivery pipeline (67), the top end of the emergency delivery pipeline (67) is connected to a flow stabilizer (68), the top end of the flow stabilizer (68) is connected to a second micro-high-precision electric regulating valve (69), and the top end of the second micro-high-precision electric regulating valve (69) is connected to a standby natural gas delivery connecting pipeline.

4. The natural gas supply device for an industrial furnace according to claim 3, characterized in that: The top end of the standby natural gas transmission connecting pipeline is connected to a regulating valve pipe (690), a pressure regulating valve (691) is installed at the side end of the regulating valve pipe (690), and the side end of the pressure regulating valve (691) is connected to a safety venting pipeline (692).

5. The natural gas supply device for industrial furnace according to claim 1, characterized in that: The ultrasonic regulating component (5) comprises: A hoop-connecting ring frame (51), an annular electromagnetic guide rail (52), an annular sliding track groove (53) and a magnetic connection sliding positioning (54); the hoop-connecting ring frame (51) is sleeved on the outside of the pipe wall of each pipeline; the side end surface of the annular electromagnetic guide rail (52) and the hoop-connecting ring frame (51) are tightly connected; and the magnetic connection sliding positioning (54) is located inside the annular electromagnetic guide rail (52) through the annular sliding track groove (53) to form a positioning sliding adjustment.

6. The natural gas supply device for an industrial furnace according to claim 5, characterized in that: The side end of the magnetically connected sliding positioning (54) is fastened to a side frame (55), a first position control motor (56) is installed on the side end of the side frame (55), a second position control motor (58) is installed on the side end of the first position control motor (56) via a connecting column, an ultrasonic monitoring sensor (57) is installed on the side end of the second position control motor (58), and a first rotation adjustment motor box (593) is connected to the side end of the ultrasonic monitoring sensor (57).

7. The natural gas supply device for an industrial furnace according to claim 6, characterized in that: The bottom of the first rotation adjustment motor box (593) is rotatably connected to a double-open-side rod (59), and the second rotation adjustment motor box (590) and a synchronous rotation member (591) are respectively installed at the left and right ends of the bottom of the double-open-side rod (59), and the output end of the second rotation adjustment motor box (590) and the side of the synchronous rotation member (591) are fastened with an ultrasonic frequency reflection focusing arc plate (592).

8. The natural gas supply device for an industrial furnace according to claim 1, characterized in that: The input pipeline control component (9) comprises: A conveying and regulating pipeline (91), a waste impurity discharge valve pipe (92), a flow distributor (93), a pressure adaptive stabilizer (94) and a distribution conduit (95); the conveying and regulating pipeline (91) is connected to an impurity pre-separation recovery device (13) via a three-way valve pipe (10); a side end of the impurity pre-separation recovery device (13) is connected to a conveying guide (8); and a bottom end of the conveying guide (8) is connected to an output end of a metering control distribution air supply chamber (7).

9. The natural gas supply device for an industrial furnace according to claim 8, characterized in that: The waste impurity discharge valve pipe (92) is located at the side end of the guide and control pipeline (91) to form a control connection for discharging impurities carried by the gas flow. The flow distributor (93) is connected to the guide and control pipeline (91) to accurately distribute natural gas to each sub-channel under the instruction of an external PLC controller, and monitor the flow of each sub-channel in real time to ensure that the total flow and the flow of each area meet the preset requirements. The pressure adaptive stabilizer (94) is installed at the side end of the flow distributor (93) and is connected to the distribution conduit (95). The side end of the distribution conduit (95) is installed with an early warning end (96). The side end of the distribution conduit (95) is connected with a branch guide valve pipe (97). The side end of the branch guide valve pipe (97) is installed with a pipeline self-cleaning actuator (98). The branch guide valve pipe (97) is connected to each external branch pipe.

10. The natural gas supply device for an industrial furnace according to claim 1, characterized in that: The side end of the air intake flow control valve pipe (3) is connected to the natural gas intake end (1), and the side end of the natural gas intake end (1) is installed with a natural gas filter dehydrator (2). The bottom end of the metering control distribution gas supply chamber (7) is connected to a pressure control pipeline (15), and the top of the pressure control pipeline (15) is connected to a third micro high-precision electric control valve (11). The top of the third micro high-precision electric control valve (11) is connected to the other side end of the three-way valve pipe (10). The side end of the pressure control pipeline (15) is installed with a pressure regulator (12), and the side end of the pressure regulator (12) is installed with an ejector (14).

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