Energy-saving preheating type gas heating cover

Abstract

The invention discloses an energy-saving preheating type gas heating mantle which comprises a heating mantle shell, a cold and hot air total heat exchanger is fixedly arranged on the outer side of the heating mantle shell, a gas heat exchanger is arranged on one side of the surface of the heating mantle shell, and a hot air ten-square pipe is arranged in the middle of the heating mantle shell. A cold coal gas inlet header pipe is fixedly arranged at the lower end of the coal gas heat exchanger, the coal gas heat exchanger is communicated with the interior of the cold coal gas inlet header pipe, a total smoke discharge pipe is fixedly arranged in the middle of the lower end of the cold and hot air total heat exchanger, and the total smoke discharge pipe is communicated with the interior of the cold and hot air total heat exchanger. And a hot air pipe is arranged between the cold and hot air total heat exchanger and the hot air ten-square pipe. The cold air main heat exchanger and the hot air main heat exchanger are arranged, heat exchange can be conducted on combustion-supporting air and waste gas and smoke generated after combustion, and therefore the air inlet temperature can be guaranteed, the combustion effect is guaranteed, and meanwhile more energy and gas are saved.

Description

Technical Field

[0001] The invention relates to the technical field of gas heating hoods, in particular to an energy-saving preheating type gas heating hood. Background Art

[0002] Gas heating hood is a widely used equipment in industrial production, especially in occasions where high temperature heating is required, such as annealing furnaces in the metallurgical industry. The following is a detailed introduction to gas heating hood: In the prior art, the gas heating hood is usually composed of a heating hood body, a burner, a fuel supply system, an air supply system, a control system, etc. Its main function is to generate high-temperature flames or flue gases by burning gas, and transfer heat to the heated object, thereby achieving the purpose of heating.

[0003] However, such gas heating hoods in the prior art do not have a preheating function, resulting in a low air intake temperature during combustion of the device, which causes the entire device to consume more gas and is not energy-efficient. Therefore, an energy-saving preheating gas heating hood is needed to solve this problem. Summary of the invention

[0004] The object of the present invention is to provide an energy-saving preheating gas heating mantle to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-saving preheating type gas heating hood, comprising a heating hood shell, a cold and hot air total heat exchanger is fixedly arranged on the outer side of the heating hood shell, a gas heat exchanger is arranged on one side of the surface of the heating hood shell, a hot air ten-square tube is arranged in the middle of the heating hood shell, a cold gas intake main pipe is fixedly arranged at the lower end of the gas heat exchanger, the gas heat exchanger and the cold gas intake main pipe are internally connected to each other, a total flue gas exhaust pipe is fixedly arranged in the middle of the lower end of the cold and hot air total heat exchanger, the total flue gas exhaust pipe and the cold and hot air total heat exchanger are internally connected to each other, a hot air pipe is arranged between the cold and hot air total heat exchanger and the hot air ten-square tube, a combustion-supporting air duct is arranged on the surface of the cold and hot air total heat exchanger at the lower end of the hot air pipe, an electrical control box is fixedly arranged on one side of the lower end of the heating hood shell, and a hot gas pipe is fixedly arranged on the upper end of the gas heat exchanger.

[0006] Preferably, a flue gas emission branch pipe is arranged between the total flue gas emission pipe and the coal gas heat exchanger, and the flue gas participating in the heat exchange inside the coal gas heat exchanger can be led out through the coal gas heat exchanger, so that this part of the flue gas enters the total flue gas emission pipe through the flue gas emission branch pipe after the heat exchange and is finally discharged, and this part of the flue gas can exchange heat with the cold coal gas, so that the cold coal gas is converted into hot coal gas, and then the hot coal gas can be discharged from the hot coal gas pipe at the upper end of the coal gas heat exchanger.

[0007] Preferably, an energy-saving vortex fan is fixedly provided on one side of the surface of the heating hood shell, a natural gas inlet pipe is provided on one side of the lower end of the heating hood shell, and a cold air pipe is provided on one side of the natural gas inlet pipe. The fuel gas can be guided into the ignition burner through the energy-saving vortex fan, and the cold air and natural gas can be used for ignition.

[0008] Preferably, a plurality of energy-saving heat storage type gas burners are evenly and fixedly arranged on the outer surface of the heating cover shell; a hot gas burner air inlet pipe is arranged on one side of the upper end of the energy-saving heat storage type gas burner, and a hot air burner air inlet pipe is arranged on one side of the hot gas burner air inlet pipe at the upper end of the energy-saving heat storage type gas burner. The hot air and hot gas after heat exchange through the cold and hot air total heat exchanger and the gas heat exchanger can enter the energy-saving heat storage type gas burner through the hot gas burner air inlet pipe and the hot air burner air inlet pipe respectively, and the energy-saving heat storage type gas burner of the device is provided with a plurality of energy-saving heat storage type gas burners, and they are evenly spaced and arranged on the heat exchange heating cover shell.

[0009] Preferably, a combustion-supporting fan is provided on one side of the combustion-supporting air duct, and air can be blown into the combustion-supporting air duct through the combustion-supporting fan; then this part of air will undergo heat exchange operation inside the cold and hot air total heat exchanger.

[0010] Preferably, a temperature measuring thermocouple is provided on one side of the inner part of the heating cover shell, and the stability of the inner part of the heating cover shell can be monitored in real time by the temperature measuring thermocouple.

[0011] Preferably, a gas burner air pipe is fixedly arranged on one side of the energy-saving vortex blower, and the energy-saving vortex blower and the gas burner air pipe can play a role in blowing air to assist ignition and combustion.

[0012] Preferably, a guide mechanism is provided on one side of the lower end of the heating hood shell, a burner UV flame detection assembly is provided on one side of the energy-saving heat storage gas burner, and a monitoring instrument pipeline assembly is provided on one side of the electrical control box; the burner UV flame detection assembly, temperature measuring thermocouple, and monitoring instrument pipeline assembly are all electrically connected to the electrical control box.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a total cold and hot air heat exchanger and a coal gas heat exchanger, which can exchange heat between combustion-supporting air and exhaust gas after combustion, thereby ensuring the intake temperature, ensuring the combustion effect while being more energy-saving and saving coal gas; the exhaust gas after heat dissipation passes through the heat exchange part inside the total cold and hot air heat exchanger and the coal gas heat exchanger, and then is discharged through the flue gas exhaust branch pipe and the total flue gas exhaust pipe, while the cold air and cold coal gas can exchange heat inside the above-mentioned two heat exchange devices; thereby, the coal gas and air can quickly reach the ignition temperature after entering the heating cover to improve the ignition effect.

[0014] When the present invention is used, the ignition burner is equipped with a flame monitoring device (burner UV flame detection component). Once the flame goes out or ignition fails, the gas supply is automatically cut off through the solenoid valve (both the ignition gas and the heating gas are cut off). When a gas or combustion air failure occurs, the system automatically cuts off the gas supply (both the ignition gas and the heating gas are cut off), thereby ensuring the safety of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an energy-saving preheating type gas heating hood of the present invention; Figure 2 It is a front view of an energy-saving preheating type gas heating cover of the present invention; Figure 3 It is a left view of an energy-saving preheating type gas heating cover of the present invention; Figure 4 The right side view of an energy-saving preheating type gas heating cover of the present invention.

[0016] In the figure: 1. cold and hot air main heat exchanger; 2. gas heat exchanger; 3. hot air ten-sided pipe; 4. cold gas inlet main pipe; 5. main flue gas discharge pipe; 6. hot air pipe; 7. combustion-supporting air duct; 8. electrical control box; 9. hot gas pipe; 10. flue gas discharge branch pipe; 11. energy-saving vortex fan; 12. natural gas inlet pipe; 13. cold air pipe; 14. energy-saving heat storage gas burner; 15. hot gas burner inlet pipe; 16. hot air burner inlet pipe; 17. combustion-supporting fan; 18. temperature measuring thermocouple; 19. heating hood shell; 20. gas burner air pipe; 21. guide mechanism; 22. burner UV flame detection assembly; 23. monitoring instrument pipeline assembly. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-4The present invention provides a technical solution: an energy-saving preheating gas heating cover, comprising a heating cover shell 19, a cold and hot air total heat exchanger 1 is fixedly arranged on the outer side of the heating cover shell 19, a gas heat exchanger 2 is arranged on one side of the surface of the heating cover shell 19, a hot air ten-square tube 3 is arranged in the middle of the heating cover shell 19, a cold gas intake main pipe 4 is fixedly arranged at the lower end of the gas heat exchanger 2, the gas heat exchanger 2 and the cold gas intake main pipe 4 are internally connected to each other, and the A total flue gas exhaust pipe 5 is fixedly arranged in the middle of the lower end of the cold and hot air main heat exchanger 1, and the total flue gas exhaust pipe 5 is mutually conductive with the inside of the cold and hot air main heat exchanger 1, a hot air pipe 6 is arranged between the cold and hot air main heat exchanger 1 and the hot air ten-sided pipe 3, and a combustion-supporting air duct 7 is arranged on the surface of the cold and hot air main heat exchanger 1 at the lower end of the hot air pipe 6, an electrical control box 8 is fixedly arranged on one side of the lower end of the heating cover shell 19, and a hot gas pipe 9 is fixedly arranged on the upper end of the gas heat exchanger 2.

[0019] A flue gas discharge branch pipe 10 is provided between the total flue gas discharge pipe 5 and the coal gas heat exchanger 2, through which the flue gas involved in heat exchange in the coal gas heat exchanger 2 can be led out, so that this part of the flue gas enters the total flue gas discharge pipe 5 through the flue gas discharge branch pipe 10 after heat exchange and is finally discharged, and this part of the flue gas can exchange heat with the cold coal gas 1, so that the cold coal gas 1 is converted into hot coal gas, and then the hot coal gas can be discharged from the hot coal gas pipe 9 at the upper end of the coal gas heat exchanger 2; An energy-saving vortex fan 11 is fixedly arranged on one side of the surface of the heating cover shell 19, a natural gas inlet pipe 12 is arranged on one side of the lower end of the heating cover shell 19, and a cold air pipe 13 is arranged on one side of the natural gas inlet pipe 12. The energy-saving vortex fan 11 can guide the gas into the ignition burner, and the cold air and natural gas can be used for ignition; A plurality of energy-saving regenerative gas burners 14 are evenly and fixedly arranged on the outer surface of the heating cover shell 19; a hot gas burner air inlet pipe 15 is arranged on one side of the upper end of the energy-saving regenerative gas burner 14, and a hot air burner air inlet pipe 16 is arranged on one side of the hot gas burner air inlet pipe 15 on the upper end of the energy-saving regenerative gas burner 14. The hot air and hot gas after heat exchange through the cold and hot air total heat exchanger 1 and the gas heat exchanger 2 can enter the energy-saving regenerative gas burner 14 through the hot gas burner air inlet pipe 15 and the hot air burner air inlet pipe 16 respectively, and the energy-saving regenerative gas burner 14 of the device is provided with a plurality of them, and they are evenly spaced and arranged on the heat exchange heating cover shell 19; A combustion-supporting fan 17 is provided on one side of the combustion-supporting air duct 7, and air can be blown into the combustion-supporting air duct 7 through the combustion-supporting fan 17; then this part of air will be heat exchanged inside the cold and hot air total heat exchanger 1; A temperature measuring thermocouple 18 is provided on one side of the interior of the heating cover shell 19, and the temperature measuring thermocouple 18 can be used to monitor the stability of the interior of the heating cover shell 19 in real time; A gas burner air pipe 20 is fixedly arranged on one side of the energy-saving vortex fan 11, and the energy-saving vortex fan 11 and the gas burner air pipe 20 can play a role in blowing air to help ignition and combustion; A guide mechanism 21 is provided on one side of the lower end of the heating hood shell 19, a burner UV flame detection component 22 is provided on one side of the energy-saving heat storage gas burner 14, and a monitoring instrument pipeline component 23 is provided on one side of the electrical control box 8. The burner UV flame detection component 22, the temperature measuring thermocouple 18, and the monitoring instrument pipeline component 23 are all electrically connected to the electrical control box 8.

[0020] Working principle: When the present invention is used, it is provided with a total cold and hot air heat exchanger 1 and a coal gas heat exchanger 2, which can exchange heat between the combustion-supporting air and the exhaust gas after combustion, so as to ensure the intake temperature, ensure the combustion effect and save energy and gas at the same time; the exhaust gas after heat dissipation passes through the heat exchange part inside the total cold and hot air heat exchanger 1 and the coal gas heat exchanger 2, and then is discharged through the flue gas discharge branch pipe 10 and the total flue gas discharge pipe 5, while the cold air and the cold coal gas can exchange heat inside the above two heat exchange devices; thus, the coal gas and the air can quickly reach the ignition temperature after entering the heating cover, so as to improve the ignition effect; At the same time, when the device is in use, the ignition burner is equipped with a flame monitoring device (burner UV flame detection component 22). Once the flame goes out or ignition fails, the solenoid valve automatically cuts off the gas supply (both the ignition gas and the heating gas are cut off). When there is a gas or combustion air failure, the system automatically cuts off the gas supply (both the ignition gas and the heating gas are cut off).

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving preheating gas heating hood, comprising a heating hood shell (19), Features: A total cold and hot air heat exchanger (1) is fixedly arranged on the outside of the heating cover shell (19), a coal gas heat exchanger (2) is arranged on one side of the surface of the heating cover shell (19), a hot air ten-sided tube (3) is arranged in the middle of the heating cover shell (19), a cold coal gas intake main pipe (4) is fixedly arranged at the lower end of the coal gas heat exchanger (2), the coal gas heat exchanger (2) and the cold coal gas intake main pipe (4) are internally connected to each other, and a total smoke exhaust pipe (3) is fixedly arranged in the middle of the lower end of the cold and hot air total heat exchanger (1). The main flue gas exhaust pipe (5) is connected to the interior of the cold and hot air main heat exchanger (1), a hot air pipe (6) is arranged between the cold and hot air main heat exchanger (1) and the hot air ten-sided pipe (3), a combustion-supporting air duct (7) is arranged on the surface of the cold and hot air main heat exchanger (1) at the lower end of the hot air pipe (6), an electrical control box (8) is fixedly arranged on one side of the lower end of the heating cover shell (19), and a hot gas pipe (9) is fixedly arranged on the upper end of the gas heat exchanger (2).

2. An energy-saving preheating gas heating hood according to claim 1, Features: A flue gas discharge branch pipe (10) is provided between the main flue gas discharge pipe (5) and the coal gas heat exchanger (2).

3. An energy-saving preheating gas heating mantle according to claim 1, Features: An energy-saving vortex fan (11) is fixedly arranged on one side of the surface of the heating cover shell (19), a natural gas inlet pipe (12) is arranged on one side of the lower end of the heating cover shell (19), and a cold air pipe (13) is arranged on one side of the natural gas inlet pipe (12).

4. An energy-saving preheating gas heating mantle according to claim 1, Features: A plurality of energy-saving regenerative gas burners (14) are evenly and fixedly arranged on the outer surface of the heating cover shell (19); a hot gas burner air inlet pipe (15) is arranged on one side of the upper end of the energy-saving regenerative gas burner (14); and a hot air burner air inlet pipe (16) is arranged on one side of the hot gas burner air inlet pipe (15) at the upper end of the energy-saving regenerative gas burner (14).

5. An energy-saving preheating gas heating mantle according to claim 1, Features: A combustion-supporting fan (17) is provided on one side of the combustion-supporting air duct (7).

6. An energy-saving preheating gas heating mantle according to claim 1, Features: A temperature measuring thermocouple (18) is provided on one side of the interior of the heating cover shell (19).

7. An energy-saving preheating gas heating mantle according to claim 3, Features: A gas burner air pipe (20) is fixedly arranged on one side of the energy-saving vortex fan (11).

8. An energy-saving preheating gas heating mantle according to claim 1, Features: A guide mechanism (21) is provided on one side of the lower end of the heating hood shell (19); a burner UV flame detection assembly (22) is provided on one side of the energy-saving heat storage type gas burner (14); and a monitoring instrument pipeline assembly (23) is provided on one side of the electrical control box (8); the burner UV flame detection assembly (22), the temperature measuring thermocouple (18), and the monitoring instrument pipeline assembly (23) are all electrically connected to the electrical control box (8).

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