CN208282403U - fuel gas hot-blast stove - Google Patents

Abstract

Fuel gas hot-blast stove, including shell set heat exchange chamber, cold air duct and burner hearth in shell；Tubular heat exchanger is set in heat exchange chamber；The bottom of burner hearth is equipped with combustor connected to the housing, and the outlet flue of combustor is connected to burner hearth；The top of burner hearth is connected to the smoke inlet of tubular heat exchanger, is connected with smoke exhaust fan on the outlet flue of tubular heat exchanger；Cold air duct includes orthogonal first air duct and the second air duct, and the first air duct is located at the top of burner hearth and heat exchange chamber；Second air duct is located at the outside of heat exchange chamber, and the second air duct is connected to heat exchange chamber, heat exchange gap is communicated on heat exchange chamber, for slot reservation between burner hearth and shell, the side in the gap that exchanges heat is connected with air-exhausting duct between heat exchange, and air draft pipe end is connected with air-introduced machine.The fuel gas hot-blast stove of the utility model, air-exchanging chamber is interior to use tubular heat exchanger, increases heat exchange area, equipment windage is small；The setting of cold air duct, can be improved heat exchange efficiency, and convenient for production, production cost and use cost are relatively low, and occupied area is small.

Description

Fuel gas hot-blast stove

Technical field

The utility model belongs to hot-blast stove technical field more particularly to a kind of fuel gas hot-blast stove.

Background technique

Hot-blast stove is thermal power machinery, starts to be widely applied in China in late 1970s, it many industries Regeneration product as electric heat source and conventional vapor power heat source.Hot-blast stove is wide in variety, serial complete, is divided into hand with coal-adding type It burns, two kinds of machine burning, coal, Oil and gas fired boilers etc. is divided into fuel type.

Hot-blast stove is for heating extraneous air, so that it is industrially used for drying, it is in life for heating etc., application Than wide.

Currently, using telescopic fuel gas hot-blast stove on the market, the hot-blast stove manufacture difficulty is big, windage is big, production cost more Height, the thermal efficiency is not high, takes up a large area.

Utility model content

The utility model is intended to provide that a kind of structure is simple, the good fuel gas hot-blast stove of using effect.

In order to solve the above technical problems, the utility model provides the following technical solution: fuel gas hot-blast stove, including shell Body sets heat exchange chamber, cold air duct and burner hearth in shell；Tubular heat exchanger is set in heat exchange chamber；The bottom of burner hearth is equipped with and shell The combustor of body connection, the outlet flue of combustor are connected to burner hearth；The top of burner hearth is connected to the smoke inlet of tubular heat exchanger, Smoke exhaust fan is connected on the outlet flue of tubular heat exchanger；Cold air duct includes orthogonal first air duct and the second air duct, First air duct is located at the top of burner hearth and heat exchange chamber；Second air duct is located at the outside of heat exchange chamber, the second air duct and heat exchange Chamber is connected to, and heat exchange gap is communicated on heat exchange chamber, and between burner hearth and shell, the side in the gap that exchanges heat connects slot reservation between heat exchange It is connected to air-exhausting duct, air draft pipe end is connected with air-introduced machine.

The junction in the first air duct and the second air duct sets the wind deflector being obliquely installed.

Air-exhausting duct becomes larger along the direction internal diameter of heat exchange gap to air-introduced machine.

Tubular heat exchanger includes the finned tube that at least one is vertically arranged, and each finned tube is along heat exchange chamber width direction It is uniformly distributed.

Finned tube divides upper smoke tube and lower smoke tube, and the quantity of upper smoke tube and lower smoke tube is equal, the outlet of upper smoke tube and lower smoke tube Inlet communication.

Smoke-intake pipe is connected in the import of upper smoke tube, smoke-intake pipe is connected to burner hearth；Smoke is connected in the outlet of upper smoke tube Pipe, the inlet communication of pipe and lower smoke tube；It is connected with end smoke pipe in the outlet of lower smoke tube, smoke evacuation is connected on the smoke pipe of end Pipe, smoke exhaust pipe are connected to smoke exhaust fan.

Insulating layer is set on housing exterior walls.

Housing bottom is equipped with discharge outlet, and discharge outlet is connected to pipe.

Ventilating smoke tube is set between combustor and burner hearth, and the watch window and wind-supplying mouth being connected to burner hearth, observation window are set on shell Flange connected to the housing is all provided on mouth and wind-supplying mouth.

By above technical scheme, the utility model has the following beneficial effects: the utility model is agricultural and sideline class product hot air drying Dry exploitation, equipment air quantity is small, can reduce the power consumption of blower；The utility model is changed by selecting tubular heat exchanger that can increase Heat area, equipment windage are small；Meanwhile the setting of cold air duct, heat can be made full use of, improve heat exchange efficiency, convenient for making, Production cost and use cost are relatively low, and occupied area is small；In addition, the utility model can use natural gas, light oil, heavy oil, first The pluralities of fuels such as alkane, biogas, alcohol machine oil, it is flexible to use comparison, alternative high；Again, shell is equipped with safety door, prevents Only smoke exhaust fan breaks down, and causes enclosure interior pressure excessive, the danger exploded occurs；Finally, have drain valve on shell, Prevent exhaust gas temperature too low, raw ponding, causes to corrode to tubular heat exchanger in tubular heat exchanger.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model schematic diagram of internal structure.

Specific embodiment

Fuel gas hot-blast stove sets insulating layer, insulating layer is for protecting as depicted in figs. 1 and 2, including shell 3 on 3 outer wall of shell Temperature reduces heat loss.

Burner hearth 7 is set in shell 3, the bottom of burner hearth 7 is equipped with the combustor 4 connecting with shell 3, the outlet flue of combustor 4 It is connected to burner hearth 7；Meanwhile for ease of use, the stability for guaranteeing burning, sets ventilating smoke tube between combustor 4 and burner hearth 7, The watch window 5 and wind-supplying mouth 6 being connected to burner hearth 7 are set on shell 3, are all provided on watch window 5 and wind-supplying mouth 6 and are connect with shell 3 Flange.The combustion case that can be checked in burner hearth 7 by opening the flange connecting with watch window 5, by opening and mending wind The flanges of 6 connection of mouth can fill into air into burner hearth 7.

The top of burner hearth 7 is connected with smoke-intake pipe 8, and smoke-intake pipe 8 is connected to heat exchange chamber, and shell and tube heat exchange is set in heat exchange chamber Device.Tubular heat exchanger includes the finned tube that at least one is vertically arranged, and each finned tube uniformly divides along heat exchange chamber width direction Cloth.

Wherein, finned tube divides upper smoke tube 9 and lower smoke tube 10, and upper smoke tube 9 is equal with the quantity of lower smoke tube 10, wherein is located at The finned tube in left side is upper smoke tube 9, and the finned tube positioned at right side is lower smoke tube 10, the outlet of upper smoke tube 9 and lower smoke tube 10 into Mouth connection.

The import of upper smoke tube 9 is connected with smoke-intake pipe 8, pipe 11 is connected in the outlet of upper smoke tube 9, pipe 11 is under The inlet communication of smoke pipe 10；It is connected with end smoke pipe 17 in the outlet of lower smoke tube 10, smoke exhaust pipe 14 is connected on end smoke pipe 17, Smoke exhaust pipe 14 is connected to smoke exhaust fan 13.Flue gas in burner hearth 7 is entered under the guidance of smoke exhaust fan 13 by smoke-intake pipe 8 Upper smoke tube 9, the flue gas in upper smoke tube 9 enter pipe 11, and flue gas passes through pipe 11 again and enters lower smoke tube 10, final to pass through It crosses lower smoke tube 10 and enters end smoke pipe 17, then smoke exhaust pipe 14 is entered by end smoke pipe 17, eventually by smoke exhaust fan 13 Discharge.

In order to realize the heating to outside air, cold air duct is additionally provided in shell 3, wherein cold air duct includes being mutually perpendicular to The first air duct 15 and the second air duct 16, the junction in the first air duct 15 and the second air duct 16 sets the wind deflector 12 being obliquely installed, Impact of the air to 16 junction of the first air duct 15 and the second air duct can be reduced by the way that wind deflector 12 is arranged, reduces windage loss, drop The energy consumption of low air-introduced machine 1 improves using effect.

First air duct 15 is located at the top of burner hearth 7 and heat exchange chamber；Second air duct 16 is located at the outside of heat exchange chamber, and second Air duct 16 is connected to heat exchange chamber, be communicated on heat exchange chamber heat exchange gap, between heat exchange slot reservation between burner hearth 7 and shell 3, The side in heat exchange gap is connected with air-exhausting duct 2, and 2 end of air-exhausting duct is connected with air-introduced machine 1.

In order to reduce turbulent flow, guarantees the stability of hot wind, the wind deflector 19 being obliquely installed is set on the inner wall of air-exhausting duct 2, The direction of wind deflector 19 towards air-introduced machine 1 is obliquely installed.

In order to guarantee using effect, the flowing velocity of air is improved, air-exhausting duct 2 is along heat exchange gap to the direction of air-introduced machine 1 Internal diameter becomes larger.

Exhaust gas temperature is too low in order to prevent, and raw ponding, causes to corrode to tubular heat exchanger inside tubular heat exchanger, 3 bottom of shell is equipped with discharge outlet, and discharge outlet is connected to pipe 11, to be connected to upper smoke tube 9 and lower smoke tube 10, upper smoke tube 9 and lower smoke tube 10 in ponding can be drained into pipe 11, eventually pass through discharge outlet and be discharged to outside shell 3.

Smoke exhaust fan failure in order to prevent causes internal pressure excessively high, and the peace being connected to end smoke pipe 17 is set on shell 3 Air cock 18, can be to pressure release be carried out inside shell 3, to guarantee the safety in use process by opening safety door 18.

When work, combustor 4 burns, and the flue gas of generation is entered under the guidance of smoke exhaust fan 13 by smoke-intake pipe 8 To upper smoke tube 9, the flue gas in upper smoke tube 9 enters pipe 11, and flue gas passes through pipe 11 again and enters lower smoke tube 10, finally End smoke pipe 17 is entered by lower smoke tube 10, then smoke exhaust pipe 14 is entered by end smoke pipe 17, eventually by smoke exhaust fan 13 discharges.

Clean outside air enters the first air duct 15 under the action of air-introduced machine 1, makes full use of 7 top of burner hearth Heat；The second air duct 16 is entered by the first air duct 15 again, air-exchanging chamber is entered eventually into, with the flue gas in tubular heat exchanger It exchanges heat, enters air-exhausting duct 2 eventually by the heat exchange gap between burner hearth 7 and shell 3, being introduced by air-introduced machine 1 needs Want the place of hot-air.

Fuel gas hot-blast stove described in the utility model, air-exchanging chamber is interior to use tubular heat exchanger, increases heat exchange area, equipment Windage is small；The setting of cold air duct, can be improved heat exchange efficiency, and convenient for production, production cost and use cost are relatively low, land occupation Area is small.

Claims (9)

1. fuel gas hot-blast stove, it is characterised in that: including shell, heat exchange chamber, cold air duct and burner hearth are set in shell；In heat exchange chamber If tubular heat exchanger；The bottom of burner hearth is equipped with combustor connected to the housing, and the outlet flue of combustor is connected to burner hearth；Burner hearth Top be connected to the smoke inlet of tubular heat exchanger, be connected with smoke exhaust fan on the outlet flue of tubular heat exchanger；Cold air duct Including orthogonal first air duct and the second air duct, the first air duct is located at the top of burner hearth and heat exchange chamber；Second air duct position In the outside of heat exchange chamber, the second air duct is connected to heat exchange chamber, and heat exchange gap, slot reservation between heat exchange are communicated on heat exchange chamber Between burner hearth and shell, the side in the gap that exchanges heat is connected with air-exhausting duct, and air draft pipe end is connected with air-introduced machine.

2. fuel gas hot-blast stove as described in claim 1, it is characterised in that: the junction in the first air duct and the second air duct sets inclination The wind deflector of setting.

3. fuel gas hot-blast stove as claimed in claim 2, it is characterised in that: air-exhausting duct is along heat exchange gap to the direction of air-introduced machine Diameter becomes larger.

4. fuel gas hot-blast stove as claimed in claim 3, it is characterised in that: tubular heat exchanger includes that at least one is vertically arranged Finned tube, each finned tube is uniformly distributed along heat exchange chamber width direction.

5. fuel gas hot-blast stove as claimed in claim 4, it is characterised in that: finned tube divides upper smoke tube and lower smoke tube, upper smoke tube and The quantity of lower smoke tube is equal, the outlet of upper smoke tube and the inlet communication of lower smoke tube.

6. fuel gas hot-blast stove as claimed in claim 5, it is characterised in that: smoke-intake pipe is connected in the import of upper smoke tube, into cigarette Pipe is connected to burner hearth；Pipe, the inlet communication of pipe and lower smoke tube are connected in the outlet of upper smoke tube；The outlet of lower smoke tube On be connected with end smoke pipe, smoke exhaust pipe is connected on the smoke pipe of end, smoke exhaust pipe is connected to smoke exhaust fan.

7. fuel gas hot-blast stove as claimed in claim 6, it is characterised in that: set insulating layer on housing exterior walls.

8. fuel gas hot-blast stove as claimed in claim 7, it is characterised in that: housing bottom is equipped with discharge outlet, discharge outlet and smoke Pipe connection.

9. the fuel gas hot-blast stove as described in claim 1 to 8 any one, it is characterised in that: set between combustor and burner hearth logical Smoke pipe sets the watch window and wind-supplying mouth being connected to burner hearth on shell, is all provided on watch window and wind-supplying mouth connected to the housing Flange.