Thermal control method and system for a thermal energy center

Abstract

The present application relates to the technical field of heat energy center, and discloses a heat control method and system of a heat energy center, wherein by adopting an ultra-small-capacity injection combustion chamber, and under the cooperation of a fuel premixing and preheating mechanism, a fuel supply mechanism and an oxygen supply mechanism, fuel and oxygen can be quantitatively supplied, and the fuel and oxygen are mixed and preheated, so that the fuel will instantaneously deflagrate when entering the injection combustion chamber, thereby improving the combustion efficiency, so that the small-capacity injection combustion chamber can also provide the same heat supply efficiency as the ordinary combustion chamber with several times larger volume, and there is no fuel accumulation in the injection combustion chamber, so that the heat production in the injection combustion chamber can be quickly adjusted by adjusting the fuel supply, the heat energy output of the heat energy center can be controlled from the fuel end, and the inequality between heat energy input and output is avoided, so as to prevent overpressure or low pressure.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat energy center, in particular to a heat control method and system of heat energy center. BACKGROUND

[0002] The heat energy center is a complete equipment which uses wood waste as main fuel and adopts layer combustion, chamber combustion or combined combustion mode to produce multiple heat carriers and provide heat energy for the production of wood-based panels.

[0003] In the traditional heat energy center, when regulating the heat energy output, it is mostly adjusted from the output end, and the output rate of live steam, organic heat carrier and hot flue gas is regulated through corresponding valves, so as to realize the regulation of heat energy output. However, while regulating the heat energy output, the fuel in the combustion chamber is still burning according to inertia, which leads to the unevenness of heat energy input and output, and easily causes overpressure or low pressure of the heat energy center, resulting in safety hazards or discontinuous heat energy output. SUMMARY

[0004] The purpose of the present application is to provide a heat control method and system of heat energy center, which solves the problem of unevenness of heat energy input and output in the traditional heat energy center when regulating the heat energy output.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a heat control system of heat energy center, comprising a fuel feeding control module, an air supply control module, a temperature monitoring module, a flue gas monitoring module and a heat energy output control module.

[0006] The fuel feeding control module is used to control the rotation speed of the feeding motor in the fuel supply mechanism, and then adjust the fuel supply rate in the fuel injection combustion chamber.

[0007] The air supply control module is used to control the rotation speed of the air blower in the oxygen supply mechanism, and then regulate the oxygen supply rate in the fuel injection combustion chamber.

[0008] The temperature monitoring module is composed of three groups of temperature sensors, one group of which is arranged in the fuel premixing and preheating mechanism to monitor the temperature of the premixing and preheating pipe, another group of which is arranged in the fuel injection combustion chamber to monitor the temperature in the fuel injection combustion chamber, and the last group of which is arranged in the water tank to monitor the temperature of the heat conducting medium.

[0009] The flue gas monitoring module is based on a group of flue gas sensors, which are arranged on one side of the flue to measure the gas content and solid pollutant content in the flue gas.

[0010] The heat energy output control module includes an output end adjusting module and an input end adjusting control module, the output end adjusting module includes an electromagnetic valve, the electromagnetic valve is used for controlling the communication of the heat conducting medium, the steam and the flue gas with the heat using end, and the heat energy output is regulated and controlled; the input end adjusting control module communicates with the fuel feeding control module and the air supply control module by calculating the heat energy demand and cooperating with the output end adjusting module, and combining the detection result of the temperature monitoring module, and intelligently coordinates the fuel supply rate and the oxygen supply rate.

[0011] Further, the fuel premixing and preheating mechanism is arranged at the front end of the fuel injection combustion chamber, the fuel premixing and preheating mechanism includes a heat dissipation cover box, one end of the heat dissipation cover box is provided with a first air inlet, the other end of the heat dissipation cover box is connected with the fuel injection combustion chamber, the heat dissipation cover box and the fuel injection combustion chamber are separated by a heat insulation plate, the heat insulation plate is also provided with a heat dissipation ventilation opening for ventilation, the heat dissipation cover box is provided with a premixing and preheating pipe, a feeding inlet is vertically connected above the premixing and preheating pipe, the fuel feeding mechanism sends fuel into the premixing and preheating pipe from the feeding inlet, the premixing and preheating pipe is provided with an air inlet at the front end, the rear end of the premixing and preheating pipe penetrates through the heat insulation plate and communicates with the fuel injection combustion chamber, the premixing and preheating pipe is provided with a spiral partition plate, and the premixing and preheating pipe and the spiral partition plate are both metal materials with good heat conductivity.

[0012] Further, the premixing and preheating pipe is provided with a spiral partition plate, and the premixing and preheating pipe and the spiral partition plate are both metal materials with good heat conductivity.

[0013] Further, the premixing and preheating pipe is provided with a spiral partition plate, and the premixing and preheating pipe and the spiral partition plate are both metal materials with good heat conductivity.

[0014] Further, the fuel feeding mechanism includes a storage hopper, the storage hopper stores fuel, a transverse feeding pipe is fixedly connected below the storage hopper through a flange, one end of the transverse feeding pipe is fixedly installed with a feeding motor, an output shaft of the feeding motor is fixedly connected with a feeding roller, and the other end of the transverse feeding pipe is inclinedly connected with a tilting discharging pipe, and the tilting discharging pipe is connected with the feeding inlet.

[0015] Further, the tilting discharging pipe is made of a metal material with high thermal conductivity, and a heat insulation gasket is arranged at the connection position between the tilting discharging pipe and the feeding inlet of the premixing and preheating pipe.

[0016] Further, the oxygen supply mechanism includes a blower and a conical flow buffer, the air outlet of the blower is connected with the narrow end of the conical flow buffer, and the wide end of the conical flow buffer is connected with the first air inlet of the heat dissipation cover box.

[0017] Further, a water tank is arranged above the fuel injection combustion chamber, and a flue back and forth in a loop is arranged in the water tank.

[0018] Further, the slag dam is provided between the fuel injection combustion chamber and the fuel injection combustion chamber, and the slag dam is provided with a flue gas flow opening, and the side close to the fuel injection combustion chamber is a horn-shaped closing.

[0019] The application provides another technical scheme, a heat control method of a heat center, comprising the following steps:

[0020] S1. Output heat energy control: when receiving a heat energy demand change signal of a use end, an output adjustment module in an output control module quickly adjusts and controls the output speed of a heat conduction medium, steam and flue gas through an electromagnetic valve to timely respond to the heat energy demand;

[0021] S2. Input heat energy control: after the output control module responds, an input adjustment control module calculates the heat energy demand after the heat energy output changes, and combines the detection result of a temperature monitoring module to timely adjust the fuel supply speed through a fuel supply control module to prevent heat energy backlog or insufficient supply;

[0022] S3. With the change of the fuel supply amount, the flue gas demand also changes, the input adjustment control module calculates the adjusted oxygen demand, and combines the detection result feedback of a flue gas monitoring module to adjust the input amount of oxygen, so that the fuel is fully combusted, and flue gas pollution is reduced.

[0023] Compared with the prior art, the application has the following beneficial effects:

[0024] The heat control method and system of the heat center can quantitatively supply fuel and oxygen by adopting the fuel injection combustion chamber with ultra-small capacity, and mixing and preheating the fuel and oxygen under the cooperation of the fuel premixing and preheating mechanism, the fuel supply mechanism and the oxygen supply mechanism, so that the fuel instantaneously explodes when entering the fuel injection combustion chamber, the combustion efficiency is improved, the fuel injection combustion chamber with small capacity can also provide the same heat supply efficiency as the ordinary combustion chamber with several times larger volume, and fuel backlog does not exist in the fuel injection combustion chamber, so that the fuel supply can be quickly adjusted to adjust the heat production in the fuel injection combustion chamber, the heat energy output of the heat center can be controlled from the fuel end, and the heat energy input and output are not uneven, so that overpressure or low pressure is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the application;

[0026] Figure 2 It is a schematic diagram of the internal structure of the application;

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the application;

[0028] Figure 4Fig. 1 is a schematic view of the water tank according to the present application;

[0029] Figure 5 Fig. 2 is a schematic view of the water tank according to the present application;

[0030] Figure 6 Fig. 3 is a schematic view of the fuel premixing and preheating mechanism according to the present application;

[0031] Figure 7 Fig. 4 is a schematic view of the fuel premixing and preheating mechanism according to the present application;

[0032] Figure 8 Fig. 5 is a schematic view of the slag dam according to the present application.

[0033] Fig. 1 is a schematic view of the water tank according to the present application; DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0035] The present application will be described in detail with reference to the drawings.

[0036] The present application will be described in detail with reference to the drawings. Figure 1 - Figure 8A heat control system of a heat energy center, the core of the heat control system is a small capacity combustion chamber 1. Due to the particularity of the production process of artificial board, according to the "Engineering Design Specification of Heat Energy Center of Artificial Board Production GB50879-2013", it is required that the combustion chamber 1 can be stable combustion under low load, and also needs to meet the requirements of safety and reliability, high combustion efficiency and heat load regulation range. When the traditional heat energy center regulates the heat energy output, it can only adjust from the output end, and adjusts the output rate of live steam, organic heat carrier and hot flue gas through the corresponding valve, so as to realize the regulation of heat energy output. However, while regulating the heat energy output, the fuel in the combustion chamber is still burning according to the inertia, which leads to the inequality of heat energy input and output, which is easy to cause overpressure or low pressure of the heat energy center, causing safety hazards or leading to discontinuous heat energy output. Accordingly, we reduce the capacity of the combustion chamber and design a small capacity combustion chamber 1. The volume of the combustion chamber 1 is one fifth to one sixth of the traditional combustion chamber, which makes the heat supply efficiency of the combustion chamber 1 also greatly reduced. Therefore, we design a supporting fuel premixing and preheating mechanism 2, a fuel supply mechanism 3 and an oxygen supply mechanism 4 to improve the combustion efficiency. The fuel supply mechanism 3 and the oxygen supply mechanism 4 continuously and forcibly supply fuel and oxygen, and the fuel premixing and preheating mechanism 2 premixes and preheats the fuel and oxygen, so that the fuel reaches the critical temperature of combustion in advance, so that the fuel will instantly explode when it enters the combustion chamber 1, thereby improving the combustion efficiency, so that the small volume of the combustion chamber 1 can also provide the same heat supply efficiency as the ordinary combustion chamber with several times larger volume.

[0037] As Figure 6 And Figure 7As shown, the fuel premixing and preheating mechanism 2 is arranged at the front end of the fuel injection combustion chamber 1, and the fuel premixing and preheating mechanism 2 comprises a heat dissipation cover box 201, one end of the heat dissipation cover box 201 is provided with a first air inlet 202, the other end of the heat dissipation cover box 201 is connected with the fuel injection combustion chamber 1, and the heat dissipation cover box 201 and the fuel injection combustion chamber 1 are separated by a heat insulation plate 203, the heat insulation plate 203 is further provided with a heat dissipation vent 204 for ventilation, the heat dissipation cover box 201 is provided with a premixing and preheating pipe 205, a feeding port 206 is vertically connected above the premixing and preheating pipe 205, the fuel feeding mechanism 3 sends fuel into the premixing and preheating pipe 205 from the feeding port 206, the premixing and preheating pipe 205 is provided with an air inlet 207 at the front end, so that the oxygen supply mechanism 4 can send air into the premixing and preheating pipe 205 from the air inlet 207, the rear end of the premixing and preheating pipe 205 penetrates through the heat insulation plate 203 and communicates with the fuel injection combustion chamber 1, the premixing and preheating pipe 205 is provided with a spiral partition plate 208, so that the fuel and air can be turned over and fully mixed after passing through the spiral partition plate 208, the premixing and preheating pipe 205 and the spiral partition plate 208 are both metal materials with good thermal conductivity, which can absorb the heat energy generated by the fuel combustion in the fuel injection combustion chamber 1, and use the contact between the fuel, air, the premixing and preheating pipe 205 and the spiral partition plate 208 to quickly heat the fuel and air, at the same time, when the air flows through the gap between the heat dissipation cover box 201 and the premixing and preheating pipe 205 and the inside of the premixing and preheating pipe 205, it can also quickly take away the heat energy of the premixing and preheating pipe 205, which can achieve the effect of inhibiting the temperature of the premixing and preheating pipe 205, preventing the temperature of the premixing and preheating pipe 205 from being too high to cause the fuel to burn in the premixing and preheating pipe 205 in advance, causing backfire and causing danger.

[0038] Among them, the lower end of the feeding port 206 of the premixing and preheating pipe 205 is provided with a wind resistance plate 209 on one side close to the air inlet 207, based on Bernoulli's principle, after the airflow enters the air inlet 207 from the air inlet 207, a part of the airflow will be blocked by the wind resistance plate 209, so that the airflow speed below the wind resistance plate 209 is faster, thereby forming a negative pressure area in the region behind the wind resistance plate 209, i.e. in the feeding port 206, which can use negative pressure to quickly suck fuel into the premixing and preheating pipe 205, and the air density in the negative pressure area is low, which can effectively inhibit combustion and avoid the danger of backfire igniting the fuel of the fuel feeding mechanism 3.

[0039] As Figure 3As shown, the fuel supply mechanism 3 includes a storage hopper 301, which stores fuel, and a transverse feeding pipe 302 connected below the storage hopper 301 by a flange. One end of the transverse feeding pipe 302 is fixedly installed with a feeding motor 303, and the output shaft of the feeding motor 303 is fixedly connected with a feeding scroll 304. The other end of the transverse feeding pipe 302 is connected with an inclined drop pipe 305, which is connected with the feed inlet 206 of the premixing and preheating pipe 205. When the fuel supply mechanism 3 is working, the feeding motor 303 drives the feeding scroll 304 to horizontally transport the fuel at the lower end of the storage hopper 301 to the inclined drop pipe 305, and the fuel slides in the inclined drop pipe 305 to the feed inlet 206 of the premixing and preheating pipe 205.

[0040] The inclined drop pipe 305 is made of a metal material with high thermal conductivity, and the connection between the inclined drop pipe 305 and the feed inlet 206 of the premixing and preheating pipe 205 is insulated by a heat insulation gasket to keep the temperature of the inclined drop pipe 305 stable and improve the physical isolation between the storage hopper 301 and the fuel premixing and preheating mechanism 2, thereby reducing the risk of tempering.

[0041] As shown, Figure 3 The oxygen supply mechanism 4 includes a blower 401 and a conical flow buffer 402. The outlet of the blower 401 is connected with the narrow end of the conical flow buffer 402, and the wide end of the conical flow buffer 402 is connected with the first air inlet 202 of the heat dissipation cover box 201. In this way, part of the airflow is directly blown into the premixing and preheating pipe 205 to mix and preheat with the fuel, and the other part of the airflow flows through the gap between the heat dissipation cover box 201 and the premixing and preheating pipe 205, enters the combustion chamber 1 through the heat dissipation vents 204 on the heat insulation plate 203, and thus the premixing and preheating pipe 205 can be cooled to prevent the temperature of the premixing and preheating pipe 205 from being too high to cause the fuel to burn prematurely in the premixing and preheating pipe 205.

[0042] In addition, due to the high wind speed of the blower 401 and the small size of the combustion chamber 1, most of the heat energy is difficult to transfer to the heat conducting medium and directly escapes with the flue gas, resulting in waste. Therefore, a back-and-forth flue 6 is arranged in the water tank 5 above the combustion chamber 1, as shown in Figure 4 and Figure 5 The flue 6 is winding and zigzag in the water tank 5, and the gaps between the flues 6 and the gaps between the flues 6 and the water tank 5 are filled with heat conducting medium. The heat energy in the flue gas has enough time and large contact area to exchange heat with the heat conducting medium, improving the efficiency of heat energy transfer, so that the temperature of the heat energy discharged through the smoke outlet 601 is within the range specified in the "Artificial Board Production Heat Energy Center Engineering Design Specification GB50879-2013", without the need for additional flue gas cooling devices.

[0043] Specifically, a slag baffle 7 is arranged between the fuel injection combustion chamber 1 and the flue 6, the slag baffle 7 is provided with a flue gas flow opening 701, and the side close to the fuel injection combustion chamber 1 is trumpet-shaped and is closed, so as to prevent ash from entering the flue 6.

[0044] A heat control system of a heat center comprises a fuel feeding control module, an air supply control module, a temperature monitoring module, a flue gas monitoring module and a heat output control module.

[0045] The fuel feeding control module is used to control the rotating speed of the feeding motor 303 in the fuel feeding mechanism 3, so as to adjust the fuel supply rate in the fuel injection combustion chamber 1.

[0046] The air supply control module is used to control the rotating speed of the air blower 401 in the oxygen supply mechanism 4, so as to adjust the oxygen supply rate in the fuel injection combustion chamber 1.

[0047] The temperature monitoring module comprises three groups of temperature sensors, one group of which is arranged in the fuel premixing and preheating mechanism 2 and is used to monitor the temperature of the premixing and preheating pipe 205, another group of which is arranged in the fuel injection combustion chamber 1 and is used to monitor the temperature in the fuel injection combustion chamber 1, and the last group of which is arranged in the water tank 5 and is used to monitor the temperature of the heat conducting medium.

[0048] The flue gas monitoring module is based on a group of flue gas sensors, which are arranged on one side of the flue 6 and are used to measure the content of CO2, CO, NO2, SO2 and other gases in the flue gas as well as the content of solid pollutants.

[0049] The heat output control module is the central control module of the system and comprises an output adjustment module and an input adjustment control module. The output adjustment module comprises a series of electromagnetic valves and is used to control the communication between the heat conducting medium, steam or flue gas and the heat using end, and adopts a traditional heat control method to adjust and control the heat output. The input adjustment control module communicates with the fuel feeding control module and the air supply control module by calculating the heat demand and cooperating with the output adjustment module and combining the detection results of the temperature monitoring module, and intelligently coordinates the fuel supply rate and the oxygen supply rate, so that the heat generated by the fuel combustion in the fuel injection combustion chamber 1 matches the heat output and loss, and the risk of water tank overpressure or pressure loss is reduced. At the same time, according to the detection results of the flue gas monitoring module, whether the fuel is fully combusted is detected, and the fuel feeding control module and the air supply control module are adjusted according to the results, so that the delivery amount of the fuel and the oxygen is automatically adjusted, so that the fuel can always be fully combusted, the maximum combustion efficiency is achieved, the pollution of the flue gas is reduced, and the fuel can be saved to the maximum extent.

[0050] Specifically, the flue gas sensor of the flue gas monitoring module can measure the concentrations of O2, CO, SO2, NO2 and other gases and the content of solid pollutants in the flue gas. According to the combustion chemical equation, the theoretical air requirement of each fuel in the ideal state can be calculated. For example, for the common natural gas combustion, the chemical equation is CH4+2O2→CO2+2H2O. This means that two moles of oxygen are required for each mole of methane to complete combustion. We can adjust the amount of air supplied to the combustion chamber according to the actual measurement of flue gas composition. If the CO concentration in the flue gas is high, it indicates that part of the fuel has not been completely burned, and the oxygen supply should be increased to promote more complete combustion. Through real-time monitoring and adjustment, the optimal fuel to oxygen ratio is found. This usually involves dynamic adjustment of the combustion process to maintain low levels of key pollutants such as CO, SO2 and NO2 in the flue gas.

[0051] Specifically, a thermal control system method of a thermal energy center includes the following steps:

[0052] 1. Output thermal energy control: When receiving a change signal of the thermal energy demand of the use end, the output adjustment module in the output control module quickly adjusts the output speed of the heat conducting medium, steam and flue gas through the electromagnetic valve to respond to the thermal energy demand in time;

[0053] 2. Input thermal energy control: After the output control module responds, the input adjustment control module calculates the thermal energy demand after the change of the thermal energy output, and combines the detection results of the temperature monitoring module to adjust the supply speed of the fuel in time through the fuel supply control module to prevent thermal energy accumulation or insufficient supply;

[0054] 3. As the amount of fuel supply changes, the flue gas demand also changes, the input adjustment control module calculates the oxygen demand after adjustment, and combines the detection results of the flue gas monitoring module to feedback and adjust the input amount of oxygen to ensure complete combustion of fuel and reduce flue gas pollution.

[0055] It should be noted that in this document, relationship terms such as first and second and the like are used only to distinguish one entity or action from another, and do not necessarily require or imply that these entities or actions are in any such actual relationship or order. Moreover, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusions, so that a process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0056] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A thermal control system for a thermal energy center, the system comprising: The fuel feeding control module, the air feeding control module, the temperature monitoring module, the flue gas monitoring module and the heat energy output control module are comprised; The heat energy output control module is realized based on a small-volume injection combustion chamber (1), a fuel premixing and preheating mechanism (2) is arranged at the front end of the injection combustion chamber (1), a fuel supply mechanism (3) is connected above the fuel premixing and preheating mechanism (2), and an oxygen supply mechanism (4) is connected at the front end of the fuel premixing and preheating mechanism (2); The fuel premixing and preheating mechanism (2) comprises a heat dissipation cover box (201), a first air inlet (202) is arranged at one end of the heat dissipation cover box (201), the other end of the heat dissipation cover box (201) is connected with the injection combustion chamber (1), the heat dissipation cover box (201) and the injection combustion chamber (1) are blocked by a heat insulation plate (203), a heat dissipation vent (204) for ventilation is further arranged on the heat insulation plate (203), a premixing and preheating pipe (205) is arranged in the heat dissipation cover box (201), a fuel inlet (206) is vertically connected above the premixing and preheating pipe (205), the fuel supply mechanism (3) sends fuel into the premixing and preheating pipe (205) from the fuel inlet (206), an air inlet (207) is arranged at the front end of the premixing and preheating pipe (205), and the rear end of the premixing and preheating pipe (205) penetrates through the heat insulation plate (203) and communicates with the injection combustion chamber (1); A wind resistance plate (209) is arranged on the side of the fuel inlet (206) of the premixing and preheating pipe (205) close to the air inlet (207); The fuel feeding control module is used for controlling the rotating speed of a feeding motor (303) in the fuel supply mechanism (3), so as to adjust the fuel supply rate in the injection combustion chamber (1); The air feeding control module is used for controlling the rotating speed of a blower (401) in the oxygen supply mechanism (4), so as to adjust the oxygen supply rate in the injection combustion chamber (1), and the oxygen supply mechanism (4) comprises the blower (401) and a conical flow buffer cover (402); The temperature monitoring module comprises three groups of temperature sensors, one group of temperature sensors is arranged in the fuel premixing and preheating mechanism (2) and used for monitoring the temperature of the premixing and preheating pipe (205), another group of temperature sensors is arranged in the injection combustion chamber (1) and used for monitoring the temperature in the injection combustion chamber (1), and the last group of temperature sensors is arranged in a water tank (5) and used for monitoring the temperature of a heat conducting medium; The flue gas monitoring module comprises a group of flue gas sensors, the flue gas sensors are arranged on one side of a flue (6) and used for measuring the gas content and the solid pollutant content in flue gas. The heat energy output control module comprises an output adjusting module and an input adjusting control module, the output adjusting module comprises an electromagnetic valve for controlling the communication of the heat conducting medium, steam and flue gas with the heat using end, and regulating and controlling the heat energy output; the input adjusting control module calculates the heat energy demand and cooperates with the output adjusting module, and combines the detection result of the temperature monitoring module, communicates with the fuel feeding control module and the air feeding control module, and intelligently coordinates the fuel supply rate and the oxygen supply rate.

2. A thermal control system for a thermal energy center according to claim 1, wherein: The premixing and preheating pipe (205) is provided with a spiral partition plate (208), and the premixing and preheating pipe (205) and the spiral partition plate (208) are both metal materials with good heat conductivity.

3. A thermal control system for a thermal energy center according to claim 1, wherein: The fuel feeding mechanism (3) comprises a storage hopper (301) in which fuel is stored, a flange (302) is connected to the lower part of the storage hopper (301), one end of the flange (302) is fixedly connected with a feeding motor (303), the output shaft of the feeding motor (303) is fixedly connected with a feeding roller (304), and the other end of the flange (302) is connected with an inclined discharging pipe (305).

4. A thermal control system for a thermal energy center according to claim 3, wherein: The inclined discharging pipe (305) is made of a metal material with high thermal conductivity, and a heat insulation gasket is arranged at the connection between the inclined discharging pipe (305) and the feeding port (206) of the premixing and preheating pipe (205).

5. A thermal control system for a thermal energy center according to claim 1, wherein: The outlet of the air blower (401) is connected with the narrow end of the conical flow buffer cover (402), and the wide end of the conical flow buffer cover (402) is connected with the first air inlet (202) of the heat dissipation cover box (201).

6. A thermal control system for a thermal energy center according to claim 1, wherein: The water tank (5) is arranged above the fuel injection combustion chamber (1), the water tank (5) is provided with a flue (6), and the flue (6) is provided with a smoke outlet (601) at the upper end.

7. A thermal control system for a thermal energy center according to claim 6, wherein: A gap is left between the flue (6) and the water tank (5), and the gap is filled with a heat conducting medium.

8. A thermal control system for a thermal energy center according to claim 1, wherein: A slag baffle (7) is arranged between the fuel injection combustion chamber (1) and the flue (6), the slag baffle (7) is provided with a flue gas flow passage (701), and the side close to the fuel injection combustion chamber (1) is trumpet-shaped.

9. A thermal control method of a thermal control system of a thermal energy center according to any one of claims 1 to 8, characterized in that: The method comprises the following steps: S1. Output heat energy control: when receiving a change signal of the heat energy demand of the use end, the output adjusting module in the output control module quickly regulates and controls the output speed of the heat conducting medium, steam and flue gas through the electromagnetic valve, so as to timely respond to the heat energy demand; S2. Input heat energy control: after the output control module responds, the input adjusting control module calculates the heat energy demand after the change of the heat energy output, combines the detection result of the temperature monitoring module, and timely adjusts the fuel supply speed through the fuel supply control module, so as to prevent heat energy accumulation or insufficient supply; S3. With the change of the fuel supply amount, the flue gas demand also changes, the input adjusting control module calculates the oxygen demand after adjustment, combines the detection result feedback of the flue gas monitoring module, regulates and controls the input amount of oxygen, ensures sufficient combustion of fuel, and reduces flue gas pollution.

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