CN2599469Y - Oil-fired gas-fired atmospheric water-heating boiler - Google Patents

Abstract

The utility model discloses an oil & gas boiler of atmospheric pressure, comprising a shell, a front tube sheet and a back tube sheet, an internal furnace, a smoke pipe of small diameter, a smoke box and a combustion machine. The shell is welded to the front tube sheet, the back tube sheet and the foundation support as a integration, the smoke box is welded to the back tube sheet and a water feed tube, a water discharge tube and a tube of connecting to the atmosphere is welded at the top of the shell. The internal furnace is positioned in the internal cavity of the shell, and the empty cavity forms between the internal furnace and the shell is a large water jacket. The smoke pipe of connecting the internal furnace and the smoke box is distributed evenly in the water jacket, and a small internal furnace with small water jacket is equipped in the internal furnace. The small internal furnace is equipped with the feed and discharge pipe of water at the top and bottom, and the small water jacket on the small internal furnace is communicated to the large water jacket between the internal furnace and the shell by the water pipes. The utility model has the advantages of good heat transfer effects, high thermal efficiency, and heat exchange in the shorter time and rapid supply of hot water.

Description

The fuel vapor normal-pressure hot-water boiler

Affiliated technical field

The utility model relates to a kind of fuel vapor normal-pressure hot-water boiler that is used to supply the domestic hot-water.

Background technology

At present, the horizontal small fuel vapor normal-pressure hot-water boiler (2 * 10 of domestic production and use ⁴～10 * 10 ⁴Kcal/h) generally adopt center strile-back type jacket structure for water, mainly form by several major parts such as shell, flue, front and back tube sheet, smoke pipe, smoke box, combustors.Its weak point is: 1, flue is positioned at the body of heater center, and smoke pipe is arranged along the flue hoop, bottom smoke pipe heat exchange weak effect, and the heating surface utilization rate is low; 2, single backhaul smoke pipe, flue gas flow rate is low, and exhaust gas temperature is higher, and heat loss is big, and the thermal efficiency is low; 3, flue exhanst gas outlet temperature drift, the front tube sheet condition of work is abominable, and fire door hull-skin temperature height is scalded the user easily.

The utility model content

The purpose of this utility model is to provide a kind of thermal efficiency high and safe and reliable fuel vapor normal-pressure hot-water boiler.

The purpose of this utility model can realize by following technical measures: comprise shell, the front and back tube sheet, flue, the minor diameter smoke pipe, smoke box and combustor, shell and front and back tube sheet, underframe is integrally welded, smoke box is welded on the back tube sheet, the shell top is welded with feed pipe, outlet pipe and atmospheric communicating pipe, flue is loaded on the shell inner chamber, cavity between flue and the shell is big water jacket, the minor diameter smoke pipe that is used for being communicated with flue and smoke box is symmetrically distributed in this big water jacket, it is characterized in that: the little flue that is provided with the band small water sleeve in the described flue, this little flue is equipped with the Inlet and outlet water tube connector up and down, and the small water sleeve on the little flue connects water pipe through turnover and communicates with big water jacket between flue and the shell.

Also be provided with feed pipe on the shell described in the utility model, feed pipe is inserted in the big water jacket between flue and the shell and is offering outlet corresponding to small water sleeve flue water inlet tube connector place.Can make water be easier to enter in the small water sleeve like this, accelerate circulation, fully heat exchange.

The utility model compared with prior art has following advantage: 1, double water jacket flue augmentation of heat transfer, but finish heat exchange within a short period of time, hot water is provided rapidly; 2, the flue exit gas temperature is moderate, helps improving the front tube sheet condition of work and reduces the fire door hull-skin temperature, increases the service life; 3, minor diameter smoke pipe symmetric arrangement is heated evenly, and heat-transfer effect is good, and exhaust gas temperature is low, thermal efficiency height; 4, compact conformation, with under the volume, heating surface utilization rate height, the steel consumption is few.

Description of drawings

Fig. 1 is a fuel vapor normal-pressure hot-water boiler schematic diagram.

Fig. 2 is the A-A view of Fig. 1.

The specific embodiment

As shown in Figure 1, 2, present embodiment comprises shell 5, front and back tube sheet 3,8, flue 11, minor diameter smoke pipe 14, smoke box 9 and combustor 1, shell 5 and front and back tube sheet 3,8, underframe are integrally welded, Han You Hinge chain is in order to connect and unlatching fire door 2 on the front tube sheet 3, combustor 1 is installed on the fire door 2, and smoke box 9 is welded on the back tube sheet 8.Shell 5 tops are welded with feed pipe 10, outlet pipe 4 and atmospheric communicating pipe 6, and atmospheric communicating pipe 6 communicates with atmosphere, guarantee the operation of boiler normal pressure, and are safe and reliable.Flue 11 is loaded on the shell inner chamber, flue 11 is big water jacket 15 with the cavity of shell 5, the minor diameter smoke pipe 14 that is used for being communicated with flue 11 and smoke box 9 is symmetrically distributed in this big water jacket 15, be provided with the port courage 13 of band small water sleeve 16 in the flue 11, this port courage 13 is equipped with water outlet tube connector 7, water inlet tube connector 12 up and down, and the small water sleeve 16 on the port courage 13 connects water pipe 7,12 through turnover and communicates with big water jacket 15 between flue and the shell.Also be provided with on the shell feed pipe 10 ', feed pipe 10 ' from big water jacket 15 between dark insertion flue and the shell is passed in back tube sheet 8 bottoms, and setting out the mouth of a river corresponding to water inlet tube connector 12 places on the small water sleeve flue; Can make water be easier to enter in the small water sleeve like this, accelerate circulation, fully heat exchange.Fuel before the flue of high-temperature flue gas between outlet of small water sleeve flue and flue carries out heat convection and turn back to flue, enters the minor diameter smoke pipe behind abundant burning and radiation heat transfer in the small water sleeve flue, carry out heat convection, after the smoke box chimney enters atmosphere; Feed water simultaneously and directly enter in the small water sleeve flue by the water inlet tube connector, force to enter in the shell after absorbing interior radiation of stove and convection heat transfer amount fully rapidly by the water outlet tube connector, fully absorb the thermal discharge of flue gas again, reach specified leaving water temperature at last in the smoke pipe side.Heated hot water is extracted out by hot water circulating pump through shell top outlet pipe and is sent into heating system.

The utility model can be provided with automatic controller; realize the automatic adjusting of burning, automatic water supplement, automatic temperature-control, regularly startup, fault alarm, fault diagnosis, superpressure, overtemperature, lack of water and multiple protective such as flame-out; centralized Control and building communication interface function can be provided, make boiler be in operation under the optimal economic state.

Claims (2)

1, a kind of fuel vapor normal-pressure hot-water boiler, comprise shell (5), front and back tube sheet (3,8), flue (11), minor diameter smoke pipe (14), smoke box (9) and combustor (1) shell (5) and front and back tube sheet (3,8), underframe is integrally welded, smoke box (9) is welded on the back tube sheet (8), the shell top is welded with feed pipe (10), outlet pipe (4) and atmospheric communicating pipe (6), flue (11) is loaded on the shell inner chamber, cavity between flue (11) and the shell (5) is big water jacket (15), the minor diameter smoke pipe (14) that is used for being communicated with flue (11) and smoke box (9) is symmetrically distributed in this big water jacket (15), it is characterized in that: the little flue (13) that is provided with band small water sleeve (16) in the described flue (11), this little flue (13) is equipped with up and down into, water outlet tube connector (7,12), the small water sleeve (16) on the little flue (13) connects water pipe (7 through turnover, 12) with flue and shell between big water jacket (15) communicate.

2, fuel vapor normal-pressure hot-water boiler according to claim 1, it is characterized in that: also be provided with feed pipe (10 ') on the described shell (5), feed pipe (10 ') is inserted in the big water jacket (15) between flue and the shell and is locating to offer outlet corresponding to small water sleeve flue (13) water inlet tube connector (12).

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