CN203068780U - Fuel oil and gas ordinary pressure boiler - Google Patents

Abstract

The utility model discloses a fuel oil and gas ordinary pressure boiler which comprises a boiler shell and a boiler container fixed in the boiler shell. A space between the boiler shell and the boiler container are sealed so that a water jacket is formed. A cooling medium input pipe is connected with the upper side of the water jacket and a heating medium output pipe is connected with the lower side of the water jacket. According to the technical scheme, the boiler shell and the boiler container are connected in a sealing mode, the space between the boiler shell and the boiler container are sealed so that the water jacket of heat cycle is formed, output of hot water for heating is offered to the outer side, water circulates from top the bottom, water is filled from the upper portion where boiler heat is concentrated, heating efficiency is improved, and meanwhile, the fuel oil and gas ordinary pressure boiler is safe and energy-saving.

Description

A kind of fuel-firing gas-firing normal-pressure boiler

Technical field

The utility model belongs to heating boiler technical equipment field, especially relates to a kind of fuel-firing gas-firing normal-pressure boiler.

Background technology

In recent years, be in safe consideration, normal-pressure boiler more and more is used for heating system and replaces in the past conventional boiler.Normal-pressure boiler is because safe, and cost is low, and is all fairly simple to its management of using, design, make, installing, also lower to the requirement of boiler room, obtained using widely in the system of spot heating.

And aspect the present boiler oil formation of China, heavy duty boiler is generally coal-fired, low capacity furnace fuel oil, gas or other fuel.For the winter heating in the many cities of China, the city center is generally central heating, adopts considerable coal-fired boiler, to the outer suburbs, and it is too big to lay the heat distribution pipe network investment, and maintenance cost is also high.Heat distribution pipe network lay less than the place, can only adopt coal-burning boiler, the thermal efficiency is low, pollutant emission is many.

Summary of the invention

Low in order to remedy above-mentioned boiler thermal efficiency when the heating, with serious pollution defective cooperates normal-pressure boiler and low capacity heating, reaches safe, energy-conservation, and the purpose of environmental protection the utility model proposes a kind of fuel-firing gas-firing normal-pressure boiler.

The technical scheme that realizes above-mentioned beneficial effect is, a kind of fuel-firing gas-firing normal-pressure boiler comprises furnace shell and is fixed on the interior flue of furnace shell that the space sealing between furnace shell and the flue forms water jacket, the top of water jacket is connected with the refrigerant input pipe, and the below is connected with the heating agent efferent duct.In the technical program, furnace shell and flue are fixed together, and the water jacket that the space sealing between furnace shell and the flue is formed thermal cycle provides heating hot water for the external world.The endless form of water is intake on the water jacket top that the body of heater heat is relatively concentrated from top to bottom in the water jacket, has improved the efficiency of heating surface, simultaneously the normal-pressure boiler energy-saving safe of this novel employing fuel-firing gas-firing.

Be communicated with the thermal source input pipe at the top of flue, be communicated with smoke discharge tube on the sidewall of flue, described thermal source input pipe and smoke discharge tube passes water jacket respectively and furnace shell is in communication with the outside.In the technical program, adopt the act as a fuel inlet and outlet piping of pipeline of thermal source input pipe, when being supported, also kept by fuel channel the sealing state of water jacket, and fuel and air are entered by the flue top can be with fuel preheating or gasification in the flue process, make it be easier to spray flue, it is more abundant to burn.Fuel heat after the flue internal combustion upwards better is radiated on the water jacket, has improved the efficient of water jacket, and waste gas is discharged flue by the flue gas drain of sidewall and guaranteed that burning gallery is unimpeded.

Also be connected with the gas-water heat exchanger by flange at the smoke discharge tube end.In the technical program, adopt the heat in the flue gas after the fuel combustion heat exchanger further to reclaim, improved efficiency of utilization, reduced thermal loss, connect heat exchanger by flange, be convenient to the installation and maintenance of body of heater and heat exchanger.

Described furnace shell comprises housing and the airtight upper and lower end cap that is welded on the housing upper/lower terminal, and has the opening that supplying heat source input pipe and smoke discharge tube pass through on upper end cover and the furnace shell.The straight shaft that described flue also comprises the top bell, weld together with bell, be welded on the ripple shaft of straight shaft below and be welded on the ellipsoid furnace bottom of ripple shaft bottom, described thermal source input pipe is connected on the bell, and the flue gas drain is connected on the straight shaft.In the technical program, furnace shell all connects together by the mode of welding with flue, guarantee the sealing of water jacket and flue inside, furnace shell and flue all are to be welded by a plurality of parts simultaneously, different parts can be processed the back respectively and weld, reduce the production difficulty of boiler integral body, improved production efficiency.

Be connected with the scrubbing pipe in the flue bottom, be connected with blow-off pipe in the furnace shell bottom.In the technical program, adopt scrubbing pipe and blow-off pipe that the foreign material in flue and the water jacket are removed, prolonged this novel service life and stability.

At ellipsoid furnace bottom inner surface the fire prevention bed course is arranged fixedly also.In the technical program, the fire prevention bed course prevents from furnace bottom being burnt out when burning from the fuel of thermal source input pipe ejection, has improved life of product.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the present utility model;

Among the figure, 1, furnace shell; 11, housing; 12, upper end cover; 13, bottom end cover; 14, blow-off pipe; 2, flue; 21, thermal source input pipe; 22, smoke discharge tube; 23, bell; 24, straight shaft; 25, ripple shaft; 26, ellipsoid furnace bottom; 27, scrubbing pipe; 3, water jacket; 31, refrigerant input pipe; 32, heating agent efferent duct; 4, fire prevention bed course; 5, flange; 6, gas-water heat exchanger.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further.

In conjunction with Fig. 1, a kind of embodiment of the present utility model.Oily gas normal-pressure boiler among the figure comprises furnace shell 1 and is fixed on the interior flue 2 of furnace shell that the space sealing between furnace shell and the flue forms water jacket 3, and the top of water jacket is connected with refrigerant input pipe 31, and the below is connected with heating agent efferent duct 32.Be communicated with thermal source input pipe 21 at the top of flue, be communicated with smoke discharge tube 22 on the sidewall of flue, described thermal source input pipe and smoke discharge tube passes water jacket respectively and furnace shell is in communication with the outside.Also be connected with gas-water heat exchanger 6 by flange 5 at the smoke discharge tube end.Described furnace shell comprises housing 11 and airtight upper end cover 12, the bottom end cover 13 that is welded on the housing upper/lower terminal, and has the opening that supplying heat source input pipe and smoke discharge tube pass through on upper end cover and the furnace shell.The straight shaft 24 that described flue also comprises top bell 23, weld together with bell, be welded on the ripple shaft 25 of straight shaft below and be welded on the ellipsoid furnace bottom 26 of ripple shaft bottom, described thermal source input pipe is connected on the bell, and the flue gas drain is connected on the straight shaft.Be connected with scrubbing pipe 27 in the flue bottom, be connected with blow-off pipe 14 in the furnace shell bottom.At ellipsoid furnace bottom inner surface fire prevention bed course 4 is arranged fixedly also.

Present embodiment connects the gas-water heat exchanger at flue gas discharge opening when in use by flange, utilize heat exchanger that heat is further reclaimed.After in water jacket, feeding refrigerant, inject fuel in the flue and light by the thermal source input pipe, the heat of flue fuel combustion carries out radiation upward and all around, wherein Shang Fang heat radiation is more, the refrigerant input pipe of water jacket is connected the water jacket top, improve the degree of utilizing to heat, be the cooling of flue top simultaneously.After the refrigerant heating in the water jacket, outwards export by the refrigerant delivery outlet, cooperate the gas-water heat exchanger to provide heat for external world's heating.

The above; be general case study on implementation of the present utility model; be not that the utility model is imposed any restrictions; every any simple modification, change and equivalent structure of above embodiment being done according to the utility model technical spirit changes, and all still belongs in the protection domain of technical solutions of the utility model.

Claims (7)

1. fuel-firing gas-firing normal-pressure boiler, comprise furnace shell (1) and be fixed on the interior flue (2) of furnace shell, it is characterized in that the space sealing between furnace shell and the flue forms water jacket (3), the top of water jacket is connected with refrigerant input pipe (31), and the below is connected with heating agent efferent duct (32).

2. fuel-firing gas-firing normal-pressure boiler according to claim 1, it is characterized in that, be communicated with thermal source input pipe (21) at the top of flue, be communicated with smoke discharge tube (22) on the sidewall of flue, described thermal source input pipe and smoke discharge tube passes water jacket respectively and furnace shell is in communication with the outside.

3. fuel-firing gas-firing normal-pressure boiler according to claim 2 is characterized in that, also is connected with gas-water heat exchanger (6) by flange (5) at the smoke discharge tube end.

4. fuel-firing gas-firing normal-pressure boiler according to claim 2, it is characterized in that, described furnace shell comprises housing (11) and the airtight upper and lower end cap (12,13) that is welded on the housing upper/lower terminal, and has the opening that supplying heat source input pipe and smoke discharge tube pass through on upper end cover and the furnace shell.

5. fuel-firing gas-firing normal-pressure boiler according to claim 2, it is characterized in that, the straight shaft (24) that described flue also comprises top bell (23), weld together with bell, be welded on the ripple shaft (25) of straight shaft below and be welded on ellipsoid furnace bottom (26) bottom the ripple shaft, described thermal source input pipe is connected on the bell, and the flue gas drain is connected on the straight shaft.

6. fuel-firing gas-firing normal-pressure boiler according to claim 1 is characterized in that, is connected with scrubbing pipe (27) in the flue bottom, is connected with blow-off pipe (14) in the furnace shell bottom.

7. fuel-firing gas-firing normal-pressure boiler according to claim 5 is characterized in that, at ellipsoid furnace bottom inner surface fire prevention bed course (4) is arranged fixedly also.