Efficient fuel gas heating system

Abstract

The invention discloses an efficient fuel gas heating system. The heating system comprises a fuel gas / combustion-supporting gas ratio control system, an automatic ignition system, a combustion torch fixing support, a lifting moving platform, an annular combustion torch and a detection control system. The combustion torch, the combustion torch fixing support and the lifting moving platform are sequentially and fixedly connected from top to bottom. The lifting moving platform can move and lift; the fuel gas / combustion-supporting gas ratio control system is used for connecting a fuel gas source and a combustion-supporting gas source and adjusting the ratio of fuel gas to combustion-supporting gas to an optimal mixing ratio; the automatic ignition system is connected with the fuel gas / combustion-supporting gas ratio control system and the detection control system and used for achieving ignition of the combustion torch. And the detection control system is used for controlling the automatic ignition system and the fuel gas / combustion-supporting gas ratio control system. The heating system has the characteristics of sufficient combustion, high efficiency, high heat flux density, uniform heating, high temperature of the heating end and adjustable height position of the combustion torch.

Description

Technical Field

[0001] The invention belongs to the technical field of external combustion engines, and in particular relates to a high-efficiency gas heating system. Background Art

[0002] The technology of external combustion engine (ECE) has become the focus of research in the field of new energy for both military and civilian use in recent years, with its outstanding advantages such as high energy conversion efficiency, stable and reliable operation, low noise and long life. The free piston Stirling generator is the most widely studied ECE at present. The free piston Stirling generator has a wide range of energy adaptability and has been used in aviation, aerospace, submarines and other fields.

[0003] The free piston Stirling generator directly connects the heat engine with the linear motor, converts the heat energy into mechanical energy through the heat engine, and then converts the mechanical energy into electrical energy output through the linear motor, thereby realizing the energy conversion of heat energy-mechanical energy-electrical energy. There are many external heating methods for free piston Stirling generators, mainly including electric heating, solar heating, molten salt heating, flame heating, etc.

[0004] Existing heating mostly adopts electric heating, but electric heating has the problems of low heat flux density, low heat transfer efficiency and low power density of the heater to the hot end of the external combustion engine. Summary of the invention

[0005] In view of the problems of low heat flux density, low heat transfer efficiency and low power density of the heater to the hot end of the external combustion engine in the existing electric heating, the present invention provides a high-efficiency gas heating system, which has the characteristics of high combustion efficiency, high heat flux density, uniform heating, high heating end temperature and adjustable height position of the combustion torch, solving the problems of low heat flux density, low heat transfer efficiency and low power density of the heater to the hot end of the external combustion engine in the existing electric heating.

[0006] In order to achieve the above object, the present invention adopts the following specific technical solutions:

[0007] A high-efficiency gas heating system, the heating system includes a gas / fuel-supporting gas ratio control system, an automatic ignition system, a combustion torch fixing bracket, a lifting and moving platform, a ring-shaped combustion torch and a detection control system;

[0008] The combustion torch, the combustion torch fixing bracket and the lifting and moving platform are fixedly connected in sequence from top to bottom; the lifting and moving platform can be moved and lifted, and is used to align the flame outlet of the combustion torch with the heating part of the heating equipment;

[0009] The fuel gas / fuel gas ratio control system is used to connect the fuel gas source and the fuel gas source, and adjust the ratio of the fuel gas and the fuel gas to an optimal mixing ratio;

[0010] The combustion torch is connected to the fuel gas / fuel-supporting gas ratio control system;

[0011] The automatic ignition system is connected to the fuel gas / fuel-supporting gas ratio control system and the detection control system, and is used to realize the ignition of the combustion torch;

[0012] The detection control system is used to detect the temperature of the heated part, and control the automatic ignition system and the gas / fuel-supporting gas ratio control system according to the detected temperature, a preset temperature upper limit value and a preset temperature lower limit value.

[0013] Furthermore, the automatic ignition system includes an automatic ignition high-voltage system and an automatic ignition gun;

[0014] The automatic ignition high-voltage system is connected between the detection and control system and the automatic ignition gun, and is used to control the ignition of the automatic ignition gun according to the control signal of the detection and control system;

[0015] The automatic ignition gun is connected to the fuel gas / fuel-supporting gas ratio control system.

[0016] Furthermore, the combustion torches are arranged in parallel in at least two layers from top to bottom.

[0017] Furthermore, it also includes a smoke hood and a smoke exhaust motor;

[0018] The smoke collecting hood is installed on the top of the combustion torch and is connected to the smoke exhaust duct through a quick disconnect interface;

[0019] The smoke hood is equipped with the smoke exhaust motor, through which smoke and waste heat are forced to be discharged outdoors;

[0020] The detection control system is connected to the smoke exhaust motor signal and is used to control the smoke exhaust motor.

[0021] Furthermore, the smoke collecting hood is made of heat-resistant stainless steel.

[0022] Furthermore, the gas / fuel-supporting gas ratio control system includes a gas pipe, a fuel-supporting gas pipe, a gas branch pipe, a fuel-supporting gas branch pipe, a main valve, a pressure regulating valve, a pressure gauge and a solenoid valve;

[0023] The inlet of the gas pipe is connected to the gas source, and the outlet is connected to the automatic ignition gun and the combustion torch through the gas branch pipe;

[0024] The inlet of the combustion-supporting gas pipe is connected to the combustion-supporting gas source, and the outlet is connected to the automatic ignition gun and the combustion torch through the combustion-supporting gas branch pipe;

[0025] The main valve, the pressure gauge and the pressure regulating valve are installed in the gas pipe and the combustion-supporting gas pipe;

[0026] The solenoid valve is installed in each of the gas branch pipes and each of the gas-supporting gas branch pipes;

[0027] The solenoid valve, the pressure regulating valve and the pressure gauge are all connected to the detection control system.

[0028] Furthermore, the gas / fuel-supporting gas ratio control system further comprises a backfire preventer and a check valve;

[0029] The check valve is also installed in the gas pipe and the combustion-supporting gas pipe;

[0030] The flashback preventer is also installed in each of the gas branch pipes and each of the gas-supporting gas branch pipes.

[0031] Furthermore, a double-stage dry filter is installed in the gas pipe;

[0032] An oil-water separator and a dry filter are installed in the combustion-supporting gas pipe.

[0033] Furthermore, it also includes a gas leakage alarm device for detecting gas leakage.

[0034] Furthermore, the heating device is an external combustion engine.

[0035] Compared with the prior art, the high-efficiency gas heating system of the present invention has the following beneficial effects:

[0036] 1. The above-mentioned heating system mixes the fuel gas and the combustion-supporting gas in a certain proportion through the fuel gas / fuel-supporting gas ratio control system to achieve the optimal combustion value and heating temperature. The combustion torch is ignited by the automatic ignition system. The flame of the combustion torch directly heats the heated part, thereby improving the heating rate of the heated end of the external combustion engine. By testing the temperature of the heated part of the external combustion engine, the gas supply size is controlled to realize the closed-loop regulation function of the heated end temperature. By setting the upper and lower limits of the hot end temperature, the automatic ignition and fire extinguishing of the automatic ignition system are controlled.

[0037] 2. By moving and lifting the lifting platform, the flame nozzle of the combustion torch can be aimed at the heating part of the external combustion engine and other heating equipment, so as to directly and accurately heat the heating part, provide high heat flux density, increase the heating rate of the heating part, improve the effective utilization rate of the heating energy, and avoid the influence of excessive heat dispersion on other non-heating parts.

[0038] 3. The combustion torch has an annular structure, so that the flame mouth can surround the external combustion engine for heating. The heating system is designed and operated independently. There is no fixed connection or support between the heating system and the external combustion engine, so that the external combustion engine and the heating system can be effectively separated. The vibration of the external combustion engine during operation has no effect on the heating system, avoiding mutual interference between the heating system and the external combustion engine system, ensuring the stable combustion of the heating system and the real and effective dynamic information of the external combustion engine system during operation, and reducing the complexity of the external combustion engine system while improving the reliability of the heating system and the external combustion engine.

[0039] 4. The above heating system can be used to semi-quantitatively analyze the conversion efficiency between thermal energy, mechanical energy and electrical energy of an external combustion engine, providing experimental parameter references for the development of external combustion engines. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the principle structure of the high-efficiency gas heating system of the present invention;

[0041] Figure 2 FIG1 is a top view of a combustion torch;

[0042] Figure 3 This is a top view of the second combustion torch.

[0043] Among them, 1-detection control system, 2-gas / fuel-supporting gas ratio control system, 3-automatic ignition high-pressure system, 4-smoke exhaust motor, 5-smoke collection hood, 6-combustion torch fixed bracket, 7-lifting mobile platform, 8-combustion torch one, 9-combustion torch two, 10-external combustion engine, 11-automatic ignition gun, A-gas pipe, B-fuel-supporting gas pipe, C-smoke exhaust duct, a-first control circuit, b-second control circuit, c-gas control circuit, d-first gas branch pipe, e-second gas branch pipe, f-first fuel-supporting gas branch pipe, g-third gas branch pipe, h-second fuel-supporting gas branch pipe. DETAILED DESCRIPTION

[0044] 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 described embodiments 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.

[0045] The embodiment of the present invention provides a high-efficiency gas heating system, such as Figure 1 As shown, the heating system includes a gas / fuel-supporting gas ratio control system 2, an automatic ignition system, a burner torch fixing bracket 6, a lifting and moving platform 7, a ring-shaped burner torch and a detection and control system 1; the gas can be liquefied petroleum gas, natural gas, biogas and other gaseous fuels.

[0046] The combustion torch, the combustion torch fixing bracket 6 and the lifting and moving platform 7 are fixedly connected in sequence from top to bottom; the lifting and moving platform 7 can be moved and lifted, and the flame nozzle of the combustion torch is aligned with the heating part of the heating equipment by moving the lifting and moving platform 7 to the heating equipment and adjusting the height of the lifting and moving platform 7; the heating equipment is an external combustion engine 10. The height adjustment form of the lifting and moving platform 7 can be hydraulic lifting, mechanical transmission lifting, electric motor transmission lifting, etc. By moving and lifting the lifting and moving platform 7, the flame nozzle of the combustion torch can be aligned with the heating part of the heating equipment such as the external combustion engine, so as to directly and accurately heat the heating part, provide high heat flux density, improve the heating rate of the heating part, improve the effective utilization rate of the heating energy, and avoid the influence of excessive heat dispersion on other non-heating parts.

[0047] The gas / fuel-supporting gas ratio control system 2 is used to connect the gas source and the combustion-supporting gas source, and adjust the ratio of the gas and the combustion-supporting gas to an optimal mixing ratio; the gas / fuel-supporting gas ratio control system 2 is connected to the detection control system 1 signal through the gas control line c, and adjusts the pressure regulating valves of the gas and the combustion-supporting gas according to the control signal of the detection control system 1, so that the gas and the combustion-supporting gas reach an optimal mixing ratio according to the combustion characteristics, and the heating temperature can be continuously adjusted as needed.

[0048] The combustion torch is connected to the gas / fuel-supporting gas ratio control system 2, and the gas / fuel-supporting gas ratio control system 2 delivers the gas and combustion-supporting gas required for combustion to the combustion torch; the combustion torches are arranged in parallel in at least two layers from top to bottom. In this embodiment, two layers of combustion torches are provided as an example for explanation, the upper layer of the combustion torch is combustion torch one 8, and the lower layer of the combustion torch is combustion torch two 9. Figure 2 and Figure 3 As shown, the combustion torch 1 8 and the combustion torch 2 9 are both annular structures and are arranged in parallel; the heating system adopts a multi-layer annular adjustable combustion torch, which can heat the heating end of the external combustion engine of different complex structures such as annular, cylindrical, shell and tube, and variable diameter. The combustion torch is annular in structure, so that the flame mouth can surround the external combustion engine for heating, so that the external combustion engine and the heating system can be effectively separated, avoiding mutual interference between the heating system and the external combustion engine system, and ensuring the stable combustion of the heating system and the real and effective dynamic information when the external combustion engine system is working.

[0049] The automatic ignition system is connected to the gas / fuel-supporting gas ratio control system 2 and the detection control system 1, and is used to realize the ignition of the combustion torch; the automatic ignition system includes an automatic ignition high-voltage system 3 and an automatic ignition gun 11; the automatic ignition high-voltage system 3 is connected between the detection control system 1 and the automatic ignition gun 11, and the automatic ignition high-voltage system 3 is connected to the detection control system 1 signal through the second control line b, and is used to control the ignition of the automatic ignition gun 11 according to the control signal of the detection control system 1; the automatic ignition gun 11 is connected to the gas / fuel-supporting gas ratio control system 2. Since the heating system is a semi-open combustion system, the flame temperature is very high, and manual ignition is very dangerous, requiring the ignition gun to automatically ignite remotely. The ignition gun has a gas supply pipeline without a combustion-supporting gas, and the automatic ignition high-voltage system 3 is equipped with a high-voltage package to provide a high-voltage arc for the ignition gun. After the heating system is started, the solenoid valve in the first gas branch pipe d connecting the automatic ignition gun 11 to the gas / fuel-supporting gas ratio control system 2 opens, and at the same time the high-voltage package starts to strike a high-voltage arc, which ignites the gas and continues for a delay time. After the combustion torch 1 8 and the combustion torch 2 9 are ignited normally, the ignition gun automatically closes.

[0050] The detection and control system 1 is used to detect the temperature of the heated part, and control the automatic ignition system and the gas / fuel gas ratio control system 2 according to the detected temperature, the preset temperature upper limit value and the temperature lower limit value. The detection and control system 1 detects the real-time temperature through the temperature sensor set at the heated part, and controls the gas supply size by comparing the preset temperature upper limit value and temperature lower limit value before heating. By setting the upper and lower limit values ​​of the hot end temperature, the automatic ignition and fire extinguishing of the automatic ignition system are controlled to realize the closed-loop regulation function of the heated end temperature.

[0051] During the combustion process, gas will generate a large amount of smoke and waste heat. When heating is performed in a limited laboratory space, a large amount of smoke and waste heat will have an adverse effect on the health of operators and sensitive testing instruments. In order to eliminate the adverse factors of smoke and combustion waste heat, the above-mentioned heating system also includes a smoke hood 5 and a smoke exhaust motor 4; the smoke hood 5 is installed on the top of the combustion torch and connected to the smoke exhaust duct C through a quick disconnect interface; the smoke hood 5 adopts a heat-resistant stainless steel smoke hood 5, which can cover the combustion torch; the smoke hood 5 is equipped with a smoke exhaust motor 4, and the smoke and waste heat are forced to be discharged to the outside through the smoke exhaust motor 4; the detection and control system 1 is connected to the smoke exhaust motor 4 signal for controlling the smoke exhaust motor 4. By installing a heat-resistant stainless steel smoke hood 5 in the space above the combustion torch, the smoke hood 5 covers each annular combustion torch, ensuring that the generated smoke and waste heat are concentrated in the smoke hood 5, and the generated smoke and waste heat are forced to be discharged to the outside through the smoke exhaust motor 4 equipped with the smoke hood 5.

[0052] The gas / fuel-supporting gas ratio control system 2 of the above-mentioned heating system includes a gas pipe A, a fuel-supporting gas pipe B, a gas branch pipe, a fuel-supporting gas branch pipe, a main valve, a pressure regulating valve, a pressure gauge, a backfire preventer, a check valve and a solenoid valve; the inlet of the gas pipe A is connected to the gas source, and the outlet is connected to the automatic ignition gun 11 and the combustion torch through the gas branch pipe, such as Figure 1 As shown, the outlet of the gas pipe A is provided with three gas branches, namely the first gas branch d, the second gas branch e and the third gas branch g; the first gas branch d is connected to the automatic ignition gun 11, and is used to deliver gas to the automatic ignition gun 11; the second gas branch e is connected to the combustion torch 1 8, and is used to deliver gas to the combustion torch 1 8; the third gas branch g is connected to the combustion torch 2 9, and is used to deliver gas to the combustion torch 2 9; the inlet of the combustion-supporting gas pipe B is connected to the combustion-supporting gas source, and the outlet is connected to the automatic ignition gun 11 and the combustion torch through the combustion-supporting gas branch, as shown in FIG. Figure 1 As shown, the outlet of the combustion-supporting gas pipe B is provided with two combustion-supporting gas branches, namely the first combustion-supporting gas branch f and the second combustion-supporting gas branch h. The first combustion-supporting gas branch f is connected to the combustion torch 1 8 for conveying combustion-supporting gas to the combustion torch 1 8; the second combustion-supporting gas branch h is connected to the combustion torch 2 9 for conveying combustion-supporting gas to the combustion torch 2 9; a main valve, a pressure gauge, a check valve and a pressure regulating valve are installed in both the gas pipe A and the combustion-supporting gas pipe B; a solenoid valve and a backfire preventer are installed in each gas branch pipe and each combustion-supporting gas branch pipe; the solenoid valve, the pressure regulating valve and the pressure gauge are all connected to the detection and control system 1. A double-stage dry filter is installed in the gas pipe A; an oil-water separator and a dry filter are installed in the combustion-supporting gas pipe B. The heating system also includes a gas leakage alarm device for detecting gas leakage. The foam method is used to detect leakage in each pipeline in the gas / combustible gas ratio control system 2, and the pipeline interface shall not leak.

[0053] The heating system can be used to semi-quantitatively analyze the conversion efficiency between thermal energy, mechanical energy and electrical energy of the external combustion engine 10, and provide experimental parameter references for the development of the external combustion engine 10.

[0054] Using the above-mentioned high-efficiency gas heating system to heat the external combustion engine 10 includes the following steps:

[0055] The first step is to fix the annular combustion torch 1 8, combustion torch 2 9, combustion torch fixing bracket 6 and lifting movable platform 7 together, and move the lifting movable platform 7 to the heating equipment, then adjust the height of the lifting movable platform 7, align the flame mouth of the combustion torch with the heating part, and fix the lifting movable platform 7 so that it cannot move in the horizontal position.

[0056] In the second step, the smoke exhaust interface of the smoke hood 5 is effectively connected to the smoke exhaust duct C through a quick disconnect interface, and the smoke is discharged to the outside after harmless treatment; the opening of the smoke exhaust duct can be adjusted according to the size of the combustion flame, the temperature and the size of the indoor heat exchange space.

[0057] The third step is to install the automatic ignition gun 11 above the combustion torch 8, install and fix the automatic ignition high-pressure system 3 on the combustion torch fixing bracket 6, and connect the second control line b and the first gas branch pipe d.

[0058] The fourth step is to connect the second fuel gas branch pipe e and the first fuel gas branch pipe f to the combustion torch 1 8, and the third fuel gas branch pipe g and the second fuel gas branch pipe h to the combustion torch 2 9. Each connection can be fastened with a clamp, and the fuel gas and the combustion-supporting gas must not leak. Use the foam method to check the leakage of each gas line joint, and there must be no leakage at the joint.

[0059] The fifth step is to adjust the pressure regulating valves of the gas and combustion-supporting gas in the gas / fuel-supporting gas ratio control system 2. The outlet pressures of the gas and combustion-supporting gas are adjusted according to the gas characteristics, the optimal mixing ratio of the combustion-supporting gas characteristics, and the temperature value required for combustion. The pipelines in the gas / fuel-supporting gas ratio control system 2 are leak-checked using the foam method, and the pipeline interfaces must not leak.

[0060] The sixth step is to turn on the power of the detection and control system 1, set the ignition parameters, the delay time of the solenoid valve opening, the upper and lower temperature limits of the heated equipment; the ignition parameters include the ignition time of the automatic ignition gun 11, and the ignition time is used to ensure that the combustion torch 1 8 and the combustion torch 2 9 are ignited.

[0061] The seventh step is to click the ignition button on the control panel in the detection and control system 1 to automatically ignite the high-voltage system 3 to start a high-voltage arc, ignite the automatic ignition gun 11, and after the delay time is reached, the gas solenoid valves of the combustion torch 1 8 and the combustion torch 2 9 are opened, and the gas is ignited. After the delay time is reached, the combustion-supporting gas solenoid valve is opened, and the flame becomes a neutral flame, that is, the center of the flame is bright blue, and the ignition process is completed.

[0062] The eighth step is to click the end button of the detection control system 1 after the heating is completed, the solenoid valves of the gas and the auxiliary gas are closed, and the working program is reset.

[0063] In the test of 1kW and 151kW Stirling generators using the above-mentioned high-efficiency gas heating system, the heating system can evenly heat the temperature of the hot end of the generator from room temperature to 600℃ within 11 minutes. Compared with the traditional electric heating method, the heating time is shortened by 16 minutes, the heating rate is increased by 59.25%, and the heating energy is saved by 63.51%. Due to the use of a separate installation method, the influence of the vibration of the generator on the heating system during operation is reduced, the stable combustion of the heating system is ensured, and the interference of the heating system on the Stirling generator is eliminated. The gas combustion system makes the temperature control of the hot end of the Stirling generator more accurate by accurately controlling the gas flow and the combustion-supporting gas flow. The automatic control program in the system will control the heat more safely, and can achieve automatic cut-off or manual one-button shutdown in an emergency, thereby improving the safety of the entire system. Through the joint commissioning test of the gas combustion system and the Stirling generator, it was found that the generator output performance was basically consistent with the results of theoretical calculations, indicating that the gas heating system can meet the use requirements of the Stirling generator.

[0064] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high efficiency gas heating system, characterized in that: It includes a fuel gas / fuel-supporting gas ratio control system, an automatic ignition system, a burner torch fixing bracket, a lifting and moving platform, a ring-shaped burner torch, and a detection and control system; The combustion torch, the combustion torch fixing bracket and the lifting and moving platform are fixedly connected in sequence from top to bottom; the lifting and moving platform can be moved and lifted to align the flame outlet of the combustion torch with the heating part of the heating equipment; The fuel gas / fuel gas ratio control system is used to connect the fuel gas source and the fuel gas source, and adjust the ratio of the fuel gas and the fuel gas to an optimal mixing ratio; The combustion torch is connected to the fuel gas / fuel-supporting gas ratio control system; The automatic ignition system is connected to the fuel gas / fuel-supporting gas ratio control system and the detection control system, and is used to realize the ignition of the combustion torch; The detection control system is used to detect the temperature of the heated part, and control the automatic ignition system and the gas / fuel-supporting gas ratio control system according to the detected temperature, a preset temperature upper limit value and a preset temperature lower limit value.

2. The high-efficiency gas heating system according to claim 1, characterized in that: The automatic ignition system comprises an automatic ignition high-voltage system and an automatic ignition gun; The automatic ignition high-voltage system is connected between the detection and control system and the automatic ignition gun, and is used to control the ignition of the automatic ignition gun according to the control signal of the detection and control system; The automatic ignition gun is connected to the fuel gas / fuel-supporting gas ratio control system.

3. The high-efficiency gas heating system according to claim 1, characterized in that: The combustion torches are arranged in parallel in at least two layers from top to bottom.

4. The high-efficiency gas heating system according to claim 1, characterized in that: It also includes a smoke hood and a smoke exhaust motor; The smoke collecting hood is installed on the top of the combustion torch and is connected to the smoke exhaust duct through a quick disconnect interface; The smoke hood is equipped with the smoke exhaust motor, through which smoke and waste heat are forced to be discharged outdoors; The detection control system is connected to the smoke exhaust motor signal and is used to control the smoke exhaust motor.

5. The high-efficiency gas heating system according to claim 4, characterized in that: The smoke collecting hood is a heat-resistant stainless steel smoke collecting hood.

6. The high-efficiency gas heating system according to claim 2, characterized in that: The gas / fuel-supporting gas ratio control system comprises a gas pipe, a fuel-supporting gas pipe, a gas branch pipe, a fuel-supporting gas branch pipe, a main valve, a pressure regulating valve, a pressure gauge and a solenoid valve; The inlet of the gas pipe is connected to the gas source, and the outlet is connected to the automatic ignition gun and the combustion torch through the gas branch pipe; The inlet of the combustion-supporting gas pipe is connected to the combustion-supporting gas source, and the outlet is connected to the automatic ignition gun and the combustion torch through the combustion-supporting gas branch pipe; The main valve, the pressure gauge and the pressure regulating valve are installed in the gas pipe and the combustion-supporting gas pipe; The solenoid valve is installed in each of the gas branch pipes and each of the gas-supporting gas branch pipes; The solenoid valve, the pressure regulating valve and the pressure gauge are all connected to the detection control system.

7. The high-efficiency gas heating system according to claim 6, characterized in that: The gas / fuel-supporting gas ratio control system also includes a flashback preventer and a check valve; The check valve is also installed in the gas pipe and the combustion-supporting gas pipe; The flashback preventer is also installed in each of the gas branch pipes and each of the gas-supporting gas branch pipes.

8. The high efficiency gas heating system according to claim 6, characterized in that: A double-stage dry filter is installed in the gas pipe; An oil-water separator and a dry filter are installed in the combustion-supporting gas pipe.

9. The high-efficiency gas heating system according to any one of claims 1 to 8, characterized in that: Also included is a gas leak alarm device for detecting gas leaks.

10. The high-efficiency gas heating system according to any one of claims 1 to 8, characterized in that: The heating device is an external combustion engine.

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