Energy-saving preheating type gas heating cover

Abstract

The utility model 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. Due to the arrangement of the cold air total heat exchanger and the hot air total heat exchanger, heat exchange can be carried out on combustion-supporting air and waste gas and smoke generated after combustion, and therefore the air inlet temperature can be guaranteed, the combustion effect can be guaranteed, and meanwhile more energy and coal gas are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas heating covers, in particular to an energy-saving preheating type gas heating cover. Background Art

[0002] Gas heating hood is a kind of equipment widely used 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:

[0003] In the prior art, a gas heating hood usually consists 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.

[0004] However, this type of gas heating hood in the prior art has no preheating function, resulting in a low air intake temperature during combustion of the device, which causes the entire device to consume more gas during combustion and is very energy-inefficient. Therefore, an energy-saving preheating gas heating hood is needed to solve this problem. Utility Model Content

[0005] The purpose of the present utility model is to provide an energy-saving preheating gas heating cover to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, 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 main heat exchanger is fixedly arranged on the outside 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 communicated with each other, a main flue gas exhaust pipe is fixedly arranged in the middle of the lower end of the cold and hot air main heat exchanger, the main flue gas exhaust pipe is communicated with the inside of the cold and hot air main heat exchanger, a hot air pipe is arranged between the cold and hot air main 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 main 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.

[0007] Preferably, a flue gas discharge branch pipe is provided between the total flue gas discharge pipe and the gas heat exchanger, and the flue gas involved in heat exchange inside the gas heat exchanger can be led out through the gas heat exchanger, so that this part of the flue gas enters the total flue gas discharge pipe through the flue gas discharge branch pipe after heat exchange and is finally discharged. This part of the flue gas can exchange heat with the cold gas, so that the cold gas is converted into hot gas, and then the hot gas can be discharged from the hot gas pipe at the upper end of the gas heat exchanger.

[0008] Preferably, an energy-saving vortex fan is fixedly provided on one side of the surface of the heating cover shell, a natural gas inlet pipe is provided on one side of the lower end of the heating cover shell, and a cold air pipe is provided on one side of the natural gas inlet pipe. The energy-saving vortex fan can guide the gas into the ignition burner, and the cold air and natural gas can be used for ignition.

[0009] Preferably, a plurality of energy-saving regenerative gas burners are evenly and fixedly arranged on the outer surface of the heating cover shell; a hot gas burner inlet pipe is arranged on one side of the upper end of the energy-saving regenerative gas burner, and a hot air burner inlet pipe is arranged on one side of the hot gas burner inlet pipe at the upper end of the energy-saving regenerative 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 regenerative gas burner through the hot gas burner inlet pipe and the hot air burner inlet pipe respectively, and the energy-saving regenerative gas burner of this device is provided with multiple, and is evenly spaced and arranged on the heat exchange heating cover shell.

[0010] Preferably, a combustion-supporting blower is provided on one side of the combustion-supporting air duct, through which air can be blown into the combustion-supporting air duct; this air will then undergo heat exchange operations inside the cold and hot air total heat exchanger.

[0011] Preferably, a temperature measuring thermocouple is provided on one side of the interior of the heating cover shell, and the stability of the interior of the heating cover shell can be monitored in real time by the temperature measuring thermocouple.

[0012] Preferably, a gas burner air pipe is fixedly provided on one side of the energy-saving vortex blower, and air can be blown in through the energy-saving vortex blower and the gas burner air pipe to help ignition and combustion.

[0013] 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.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model is provided with a total cold and hot air heat exchanger and a gas heat exchanger, which can exchange heat between the combustion-supporting air and the exhaust gas after combustion, thereby ensuring the intake air temperature, ensuring the combustion effect while being more energy-efficient and saving gas; the exhaust gas after heat dissipation passes through the heat exchange part inside the total cold and hot air heat exchanger and the 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 gas can exchange heat inside the above-mentioned two heat exchange devices; thereby, the gas and air can quickly reach the ignition temperature after entering the interior of the heating cover, so as to improve the ignition effect.

[0016] The ignition burner of this utility model is equipped with a flame monitoring device (burner UV flame detection component). If the flame goes out or ignition fails, the solenoid valve automatically cuts off the gas supply (both ignition gas and heating gas). If a gas or combustion air failure occurs, the system automatically cuts off the gas supply (both ignition gas and heating gas), thus ensuring the safety of the device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an energy-saving preheating gas heating cover of the utility model;

[0018] Figure 2 This is a front view of an energy-saving preheating gas heating cover of the utility model;

[0019] Figure 3 This is a left view of an energy-saving preheating gas heating cover of the utility model;

[0020] Figure 4 This is a right view of an energy-saving preheating gas heating cover of the utility model.

[0021] In the figure: 1. Main heat exchanger for cold and hot air; 2. Gas heat exchanger; 3. Hot air cross-section pipe; 4. Main cold gas inlet pipe; 5. Main flue gas exhaust pipe; 6. Hot air pipe; 7. Combustion-supporting air duct; 8. Electrical control box; 9. Hot gas pipe; 10. Flue gas exhaust branch pipe; 11. Energy-saving vortex fan; 12. Natural gas inlet pipe; 13. Cold air pipe; 14. Energy-saving regenerative gas burner; 15. Hot gas burner inlet pipe; 16. Hot air burner inlet pipe; 17. Combustion-supporting fan; 18. Temperature measuring thermocouple; 19. Heating cover shell; 20. Gas burner air pipe; 21. Guide mechanism; 22. Burner UV flame detection assembly; 23. Monitoring instrument pipeline assembly. DETAILED DESCRIPTION

[0022] 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 embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The utility model 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 outside 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, A total flue gas exhaust pipe 5 is fixedly installed in the middle of the lower end of the cold and hot air main heat exchanger 1. The total flue gas exhaust pipe 5 is connected to 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 square tube 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 installed on one side of the lower end of the heating cover shell 19, and a hot gas pipe 9 is fixedly installed on the upper end of the gas heat exchanger 2.

[0024] A flue gas discharge branch pipe 10 is provided between the main flue gas discharge pipe 5 and the coal gas heat exchanger 2. The flue gas involved in heat exchange in the coal gas heat exchanger 2 can be led out through the coal gas heat exchanger 2. After heat exchange, this part of the flue gas enters the main flue gas discharge pipe 5 through the flue gas discharge branch pipe 10 and is finally discharged. 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. The hot gas can then be discharged from the hot gas pipe 9 at the upper end of the coal gas heat exchanger 2.

[0025] An energy-saving vortex fan 11 is fixedly installed on one side of the surface of the heating cover shell 19, and a natural gas inlet pipe 12 is provided on one side of the lower end of the heating cover shell 19. A cold air pipe 13 is provided 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.

[0026] 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 inlet pipe 15 is provided on one side of the upper end of the energy-saving regenerative gas burner 14, and a hot air burner inlet pipe 16 is provided on the upper end of the energy-saving regenerative gas burner 14 on one side of the hot gas burner inlet pipe 15. 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 interior of the energy-saving regenerative gas burner 14 through the hot gas burner inlet pipe 15 and the hot air burner inlet pipe 16 respectively. 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;

[0027] A combustion-supporting blower 17 is provided on one side of the combustion-supporting air duct 7, through which air can be blown into the combustion-supporting air duct 7; this air is then subjected to heat exchange operation inside the cold and hot air total heat exchanger 1;

[0028] 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;

[0029] A gas burner air pipe 20 is fixedly provided on one side of the energy-saving vortex blower 11, and air can be blown in through the energy-saving vortex blower 11 and the gas burner air pipe 20 to help ignition and combustion;

[0030] A guide mechanism 21 is provided on one side of the lower end of the heating cover 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.

[0031] Working principle: When the utility model is used, the utility model is provided with a cold and hot air total heat exchanger 1 and a gas heat exchanger 2, which can exchange heat between the combustion-supporting air and the exhaust gas after combustion, thereby ensuring the intake air temperature, ensuring the combustion effect while being more energy-efficient and saving gas; the exhaust gas after heat dissipation passes through the heat exchange parts inside the cold and hot air total heat exchanger 1 and the gas heat exchanger 2, and then is discharged through the flue gas exhaust branch pipe 10 and the total flue gas exhaust pipe 5, while the cold air and cold gas can exchange heat inside the above-mentioned two heat exchange devices; thus, the gas and air can quickly reach the ignition temperature after entering the interior of the heating cover, thereby improving the ignition effect;

[0032] The ignition burner of this device is also equipped with a flame monitoring device (burner UV flame detection component 22). In the event of flame failure or ignition failure, the solenoid valve automatically cuts off the gas supply (both ignition gas and heating gas). If a gas or combustion air failure occurs, the system automatically cuts off the gas supply (both ignition gas and heating gas).

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving preheating gas heating cover, comprising a heating cover shell (19), characterized in that: A cold and hot air total heat exchanger (1) is fixedly provided on the outside of the heating cover shell (19), a gas heat exchanger (2) is provided on one side of the surface of the heating cover shell (19), a hot air ten-square tube (3) is provided in the middle of the heating cover shell (19), a cold gas intake main pipe (4) is fixedly provided 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 a total smoke exhaust pipe (5) is fixedly provided 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 provided 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 provided 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 provided on one side of the lower end of the heating cover shell (19), and a hot gas pipe (9) is fixedly provided on the upper end of the gas heat exchanger (2).

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

4. The energy-saving preheating gas heating cover according to claim 1, characterized in that: 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. The energy-saving preheating gas heating cover according to claim 1 is characterized in that: A combustion-supporting blower (17) is provided on one side of the combustion-supporting air duct (7).

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

7. The energy-saving preheating gas heating cover according to claim 3, characterized in that: A gas burner air pipe (20) is fixedly provided on one side of the energy-saving vortex blower (11).

8. The energy-saving preheating gas heating cover according to claim 1, characterized in that: A guide mechanism (21) is provided on one side of the lower end of the heating cover 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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