Heat accumulating type combustion-supporting device

Abstract

The utility model discloses a heat storage type combustion-supporting device which comprises a hearth, the lower end of the hearth is connected with a heat storage filtering assembly, the heat storage filtering assembly is communicated with a first heat storage combustion-supporting assembly and a second heat storage combustion-supporting assembly, and the first heat storage combustion-supporting assembly and the second heat storage combustion-supporting assembly are each provided with a combustion assembly. The first heat storage combustion-supporting assembly comprises a heat storage box, and two sets of sealing connectors are embedded in the side, away from the hearth, of the heat storage box. Through the design that the first heat storage combustion-supporting assembly and the second heat storage combustion-supporting assembly are additionally arranged, fuel gas, combustion-supporting gas and smoke are separated through the fuel gas heat conduction pipe and the combustion-supporting gas heat conduction pipe, meanwhile, the temperature in the heat storage box is increased through the smoke, the fuel gas heat conduction pipe and the combustion-supporting gas heat conduction pipe are heated, and therefore the fuel gas and the combustion-supporting gas are preheated in advance; the combustion-supporting effect of the combustion-supporting device is improved, and meanwhile smoke, combustion-supporting gas and the like are prevented from being mixed.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion-supporting equipment, in particular to a heat storage type combustion-supporting device. Background Art

[0002] Industrial furnaces usually use regenerative combustion devices for production. Regenerative combustion devices have multiple advantages such as maximum recovery of waste heat from high-temperature flue gas, preheating of combustion air, and low CO2 emissions.

[0003] A search revealed the Chinese patent application number CN201410139754.5, which discloses a gas-fired constant-temperature thermal storage combustion device comprising a housing, a gas inlet, a combustion-supporting air inlet, an ignition device, two thermal storage combustion chambers, a flue gas outlet, and a temperature measuring device. The housing is a rectangular rectangular parallelepiped structure with trapezoidal structures at both ends, one for the gas inlet and the other for the flue gas outlet. The thermal storage combustion chambers are located within the housing near the gas inlet and flue gas outlet, respectively. The invention utilizes gas and combustion-supporting air to combust through the ignition device. The combustion flame and high-temperature flue gas alternately flush thermal storage ceramic bricks and thermal storage ceramic rods, allowing the thermal storage element to fully store heat within the thermal storage combustion chamber. When the flue gas temperature is higher than the thermal storage element, the thermal storage element absorbs heat. When the gas supply is lower than the operating condition, the thermal storage element releases heat, maintaining the generated flue gas at a constant temperature that meets the operating condition. This significantly improves heat exchange efficiency while broadening the range of thermal energy utilization.

[0004] However, this invention also has the following defects:

[0005] In actual application of this invention, when heating the combustion-supporting gas, the combustion-supporting gas is mixed with the flue gas after combustion and heated, and then sent into the furnace. At this time, the combustion-supporting gas may be contaminated and may be discharged from the combustion device through the flue gas outlet, thereby making the heating and combustion efficiency of the combustion-supporting gas low, resulting in unsatisfactory combustion effect. Therefore, we need to propose a heat storage combustion-supporting device to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a heat storage combustion and combustion-supporting device, which adds a first heat storage and combustion-supporting component and a second heat storage and combustion-supporting component, so that the fuel gas, combustion-supporting gas and flue gas are separated from each other, preventing the flue gas from affecting the use effect of the combustion-supporting gas, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a heat storage combustion and combustion-supporting device, comprising a furnace, a heat storage filter assembly connected to the lower end of the furnace, a first heat storage combustion and combustion-supporting assembly and a second heat storage combustion and combustion-supporting assembly connected to the heat storage filter assembly, and a group of combustion assemblies installed on each of the first heat storage combustion and combustion-supporting assembly and the second heat storage combustion and combustion-supporting assembly;

[0008] The first heat storage and combustion-supporting component includes a heat storage box, and two groups of sealing interfaces are embedded on the side of the heat storage box away from the furnace. One group of sealing interfaces is connected to a gas heat conduction pipe, and the other group of sealing interfaces is connected to a combustion-supporting gas heat conduction pipe. The gas heat conduction pipe and the combustion-supporting gas heat conduction pipe are both arranged in a bow shape, and the gas heat conduction pipe and the combustion-supporting gas heat conduction pipe are both located in the heat storage box.

[0009] Preferably, mounting grooves are provided on both sides of the inner wall of the furnace, the combustion assembly includes a burner, the output end of the burner is fixed in the mounting groove, and one end of the gas heat pipe and the combustion-supporting gas heat pipe extends from the side close to the furnace to the heat storage box and is connected to the burner.

[0010] Preferably, the heat storage filter assembly includes a heat introduction pipe, the upper end of the heat introduction pipe passes through the lower end of the furnace and extends into the furnace, the lower end of the heat introduction pipe is connected to a three-way joint, and the two output ends of the three-way joint are equipped with insulation connecting pipes.

[0011] Preferably, the heat storage filter assembly further includes an insulation filter box, the end of the insulation connecting pipe away from the three-way joint extends into the insulation filter box, a dust filter is embedded in the insulation filter box, and the insulation connecting pipe is located below the dust filter.

[0012] Preferably, the thermal insulation filter box has a sealing cover on one side away from the thermal insulation connecting pipe, the door is rotatably connected to the thermal insulation filter box by a hinge, a handle is fixed on the outside of the door, an air duct is installed at the upper end of the thermal insulation filter box, the thermal insulation filter box is connected to the heat storage box through the air duct, and a ventilation fan is installed in the air duct.

[0013] Preferably, the gas heat conduction pipe and the combustion-supporting gas heat conduction pipe are both equipped with a check valve on one end close to the burner, the upper end of the heat storage box is connected to a smoke exhaust duct, and the second heat storage and combustion-supporting assembly has the same structure as the first heat storage and combustion-supporting assembly and is arranged in a mirror-symmetrical manner.

[0014] Preferably, the gas heat conduction pipe is connected to the gas delivery pipe through a sealed interface, and the combustion-supporting gas heat conduction pipe is connected to the combustion-supporting gas delivery pipe through a sealed interface, and valves are installed on the combustion-supporting gas delivery pipe and the gas delivery pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model adds a first heat storage and combustion-supporting component and a second heat storage and combustion-supporting component, and separates the fuel gas, combustion-supporting gas and flue gas through the fuel gas heat conduction pipe and the combustion-supporting gas heat conduction pipe. At the same time, the flue gas increases the temperature in the heat storage box, heats the fuel gas heat conduction pipe and the combustion-supporting gas heat conduction pipe, so that the fuel gas and combustion-supporting gas are preheated in advance to facilitate combustion, thereby improving the combustion-supporting effect of the utility model and preventing the flue gas from mixing with the combustion-supporting gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the first heat storage and combustion-supporting component of the utility model;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the furnace of the present invention.

[0020] In the figure: 100, furnace; 110, mounting groove; 200, heat storage and filtration assembly; 201, heat introduction pipe; 202, three-way joint; 203, thermal insulation connecting pipe; 204, thermal insulation filter box; 205, dust filter; 206, hatch; 207, handle; 300, first heat storage and combustion-supporting assembly; 301, heat storage box; 302, sealing interface; 303, gas heat conduction pipe; 304, combustion-supporting gas heat conduction pipe; 305, check valve; 306, air duct; 307, ventilation fan; 308, smoke exhaust duct; 400, second heat storage and combustion-supporting assembly; 500, combustion assembly; 501, combustion-supporting gas delivery pipe; 502, gas delivery pipe; 503, valve; 504, burner. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-3 The utility model provides a technical solution: a heat storage combustion and combustion-supporting device, comprising a furnace 100, a heat storage filter assembly 200 connected to the lower end of the furnace 100, a first heat storage combustion-supporting assembly 300 and a second heat storage combustion-supporting assembly 400 connected to the heat storage filter assembly 200, and a group of combustion assemblies 500 installed on each of the first heat storage combustion-supporting assembly 300 and the second heat storage combustion-supporting assembly 400;

[0023] The first heat storage and combustion-supporting assembly 300 includes a heat storage tank 301. Two sets of sealing interfaces 302 are embedded on the side of the heat storage tank 301 away from the furnace 100. One set of sealing interfaces 302 is connected to a gas heat conduction pipe 303, and the other set of sealing interfaces 302 is connected to a combustion-supporting gas heat conduction pipe 304. The gas heat conduction pipe 303 and the combustion-supporting gas heat conduction pipe 304 are both arranged in a bow shape and are both located in the heat storage tank 301.

[0024] The gas, combustion-supporting gas and flue gas are separated by the gas heat pipe 303 and the combustion-supporting gas heat pipe 304. At the same time, the flue gas increases the temperature in the heat storage box 301, heats the gas heat pipe 303 and the combustion-supporting gas heat pipe 304, so that the gas and combustion-supporting gas are preheated in advance to facilitate combustion, thereby improving the combustion-supporting effect of the utility model and preventing the flue gas from mixing with the combustion-supporting gas.

[0025] Mounting grooves 110 are provided on both sides of the inner wall of the furnace 100. The combustion assembly 500 includes a burner 504. The output end of the burner 504 is fixed in the mounting groove 110. One end of the gas heat pipe 303 and the combustion-supporting gas heat pipe 304 extends from the side close to the furnace 100 to the heat storage box 301 and is connected to the burner 504, so that the heated gas and combustion-supporting gas can be transported to the burner 504 through the gas heat pipe 303 and the combustion-supporting gas heat pipe 304 for mixed combustion.

[0026] The heat storage filter assembly 200 includes a heat introduction pipe 201. The upper end of the heat introduction pipe 201 passes through the lower end of the furnace 100 and extends into the furnace 100. The lower end of the heat introduction pipe 201 is connected to a tee joint 202. The two output ends of the tee joint 202 are equipped with heat-insulating connecting pipes 203.

[0027] The heat storage filter assembly 200 also includes an insulation filter box 204, and the end of the insulation connecting pipe 203 away from the three-way joint 202 extends into the insulation filter box 204. The insulation filter box 204 is embedded with a dust filter 205. The insulation connecting pipe 203 is located below the dust filter 205. The flue gas is introduced into the two groups of insulation filter boxes 204 respectively through the three-way joint 202 and the insulation connecting pipe 203, and the dust in the flue gas is filtered through the dust filter 205, and the dust is filtered and retained in the insulation filter box 204.

[0028] The thermal insulation filter box 204 has a sealed cover on one side away from the thermal insulation connecting pipe 203, and the hatch 206 is connected to the thermal insulation filter box 204 by a hinge. A handle 207 is fixed on the outside of the hatch 206. When too much dust accumulates in the thermal insulation filter box 204, the handle 207 is pulled to open the hatch 206, and the dust accumulated in the thermal insulation filter box 204 can be cleaned. The upper end of the thermal insulation filter box 204 is equipped with an air duct 306, and the thermal insulation filter box 204 is connected to the heat storage box 301 through the air duct 306. A ventilation fan 307 is installed in the air duct 306, and the filtered flue gas is introduced into the heat storage box 301 through the ventilation fan 307 and the air duct 306.

[0029] A check valve 305 is installed on one end of the gas heat conduction pipe 303 and the combustion-supporting gas heat conduction pipe 304 close to the burner 504 to prevent the gas and combustion-supporting gas from flowing back. The upper end of the heat storage box 301 is connected to the smoke exhaust duct 308 to facilitate the discharge of excess smoke while preserving heat as much as possible. The second heat storage and combustion-supporting component 400 has the same structure as the first heat storage and combustion-supporting component 300 and is arranged in a mirror-symmetrical manner. The first heat storage and combustion-supporting component 300 and the second heat storage and combustion-supporting component 400 store heat at the same time, thereby improving the heat utilization efficiency.

[0030] The gas heat conduction pipe 303 is connected to the gas delivery pipe 502 through the sealing interface 302, and the combustion-supporting gas heat conduction pipe 304 is connected to the combustion-supporting gas delivery pipe 501 through the sealing interface 302. Valves 503 are installed on the combustion-supporting gas delivery pipe 501 and the gas delivery pipe 502 to facilitate stopping the delivery of gas and combustion-supporting gas at any time.

[0031] 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. A regenerative combustion and combustion-supporting device, comprising a furnace (100), characterized in that: The lower end of the furnace (100) is connected to a heat storage filter assembly (200), the heat storage filter assembly (200) is connected to a first heat storage combustion-supporting assembly (300) and a second heat storage combustion-supporting assembly (400), and a group of combustion assemblies (500) are installed on each of the first heat storage combustion-supporting assembly (300) and the second heat storage combustion-supporting assembly (400); The first heat storage and combustion-supporting assembly (300) comprises a heat storage box (301), and two groups of sealing interfaces (302) are embedded on a side of the heat storage box (301) away from the furnace (100), one group of the sealing interfaces (302) is connected to a gas heat conduction pipe (303), and the other group of the sealing interfaces (302) is connected to a combustion-supporting gas heat conduction pipe (304), the gas heat conduction pipe (303) and the combustion-supporting gas heat conduction pipe (304) are both arranged in a bow shape, and the gas heat conduction pipe (303) and the combustion-supporting gas heat conduction pipe (304) are both located in the heat storage box (301).

2. A regenerative combustion and combustion-supporting device according to claim 1, characterized in that: Mounting grooves (110) are provided on both sides of the inner wall of the furnace (100). The combustion assembly (500) includes a burner (504). The output end of the burner (504) is fixed in the mounting groove (110). One end of the gas heat conduction pipe (303) and the combustion-supporting gas heat conduction pipe (304) extends from a side close to the furnace (100) to the heat storage box (301) and is connected to the burner (504).

3. A regenerative combustion and combustion-supporting device according to claim 2, characterized in that: The heat storage filter assembly (200) comprises a heat introduction pipe (201), the upper end of the heat introduction pipe (201) passes through the lower end of the furnace (100) and extends into the furnace (100), the lower end of the heat introduction pipe (201) is connected to a three-way joint (202), and the two output ends of the three-way joint (202) are equipped with heat-insulating connecting pipes (203).

4. A regenerative combustion and combustion-supporting device according to claim 3, characterized in that: The heat storage filter assembly (200) further comprises a heat preservation filter box (204), one end of the heat preservation connecting pipe (203) away from the three-way joint (202) extends into the heat preservation filter box (204), a dust filter (205) is embedded in the heat preservation filter box (204), and the heat preservation connecting pipe (203) is located below the dust filter (205).

5. The regenerative combustion and combustion-supporting device according to claim 4, characterized in that: The heat-insulating filter box (204) is sealed with a hatch (206) on one side away from the heat-insulating connecting pipe (203). The hatch (206) is rotatably connected to the heat-insulating filter box (204) via a hinge. A handle (207) is fixed to the outside of the hatch (206). An air duct (306) is installed at the upper end of the heat-insulating filter box (204). The heat-insulating filter box (204) is connected to the heat storage box (301) via the air duct (306). A ventilation fan (307) is installed in the air duct (306).

6. The regenerative combustion and combustion-supporting device according to claim 5, characterized in that: A check valve (305) is installed on one end of the gas heat conduction pipe (303) and the combustion-supporting gas heat conduction pipe (304) close to the burner (504); the upper end of the heat storage tank (301) is connected to a smoke exhaust duct (308); and the second heat storage and combustion-supporting assembly (400) has the same structure as the first heat storage and combustion-supporting assembly (300) and is arranged in a mirror-symmetrical manner.

7. The regenerative combustion and combustion-supporting device according to claim 1, characterized in that: The gas heat conduction pipe (303) is connected to the gas delivery pipe (502) via a sealed interface (302), and the combustion-supporting gas heat conduction pipe (304) is connected to the combustion-supporting gas delivery pipe (501) via a sealed interface (302). Valves (503) are installed on both the combustion-supporting gas delivery pipe (501) and the gas delivery pipe (502).

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