CN2370341Y

CN2370341Y - Atmospheric three loop oil burning (gas burning) water boiler

Info

Publication number: CN2370341Y
Application number: CN 99223892
Authority: CN
Inventors: 张东明
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-19
Filing date: 1999-05-19
Publication date: 2000-03-22
Anticipated expiration: 2009-05-19

Abstract

The utility model relates to an atmospheric three loop oil burning (gas burning) water heating boiler. The utility model solves the problems in the existing oil burning boiler that the heat efficiency is low, and the ash removal and the inspection are inconvenient. A heat transfer part is composed of a boiler liner, a large caliber smoke pipe, a small caliber smoke pipe and a front and a back smoke boxes to form smoke gas three loops of the boiler. Smoke gas passes through the three loops, and thus, the stay time of the smoke gas is prolonged. Particularly, the time that the smoke gas is touched with a working substance prolonged by a small sized boiler is equal to the plus heat transferring quantity, and the smoke exhaust temperature is reduced. An inspection door and an access door at the front part can conveniently inspect the smoke pipes and a boiler chamber. The ash deposit at the back part can be removed from the back smoke box, so that the lasting high efficiency can be ensured.

Description

Normal pressure three loop fuel oil (gas) hot-water boilers

The utility model is a kind of normal pressure three loop fuel oil (gas) hot-water boilers.

Small-sized fuel oil (gas) boiler of domestic production mostly is vertical structure, its flue gas is short at residing time in furnace, the exhaust gas temperature height, the thermal efficiency is low, and deashing, checks inconvenience, and the low capacity oil burning boiler is strile-backd because the restriction of burner flame length in horizontal center, make the radiation heating-surface utilization rate too low, exhaust gas temperature height, and front smoke box place sealing difficulty, radiation loss is big, and efficient is low.

The purpose of this utility model is, solves above-mentioned existing existing problem, provides a kind of heating surface utilization rate good, normal pressure three loop fuel oil (gas) hot-water boilers that the thermal efficiency is high.

The utility model is achieved in that boiler body is made of forward and backward riser and two semi-circular cylindrical body assembly weldings; The heat transfer part is made of flue gas three loops of boiler flue, heavy caliber smoke pipe, small-bore smoke pipe and front and back smoke box; Flue is anterior to be welded with front vertical plate, the rear portion communicates with the welding of heavy caliber smoke pipe one end, the other end of heavy caliber smoke pipe welds mutually with front tube sheet, front tube sheet is by front smoke box side plate and front vertical plate welding, small-bore smoke pipe of several of tertiary circuit and front tube sheet, back vertical plate welding, back smoke box is welded on the back vertical plate, constitutes the flue gas recirculation of whole boiler, and the water jacket that forms between flue gas recirculation structure and the body of heater shell is the water cyclic space.Be provided with outlet pipe, atmospheric communicating pipe in upper of furnace body, the body of heater back vertical plate is provided with the water circulation structure of blow-off pipe, water inlet pipe formation boiler.High-temperature flue gas flows through these surfaces successively and carries out heat exchange with water; Cold water bottom making is heated into hot water and is drawn by outlet pipe after circulation.The place is provided with inspection door at front smoke box, and back smoke box is established shoot door, and the combustion chamber access door is established in the flue front portion; Glory hole is fixed on the access door.

Advantage of the present utility model is, adopt said structure after, after the thermal-flame that fuel oil (gas) produces by burner enters circular flue, upwards be back to front smoke box through the heavy caliber smoke pipe, again through preceding case by tubule footpath smoke pipe through after smoke box enter atmosphere.Flue gas is through three loops, and the time that has prolonged the time of staying of flue gas, particularly miniature boiler prolong smoke and working medium contact-making surface equals to have increased heat output, has reduced exhaust gas temperature.And anterior inspection door, access door can be checked smoke pipe and burner hearth easily, and the rear portion dust stratification can be removed from the back smoke box, makes it guarantee lasting high efficiency.

The drawing explanation:

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

Fig. 2 is the left view of Fig. 1;

Describe in detail below in conjunction with accompanying drawing:

As shown in the figure, boiler body is made of front vertical plate 6, back vertical plate 15 and two semi-circular cylindrical body 21 assembly weldings.The heat transfer part is made of flue gas three loops of boiler flue 1, heavy caliber smoke pipe 8, small-bore smoke pipe 12 and front smoke box 9, back smoke box 16; Flue 1 anterior and front vertical plate 6 welding, the rear portion communicates with the welding of heavy caliber smoke pipe 8 one ends, the other end of heavy caliber smoke pipe 8 welds mutually with front tube sheet 24, front tube sheet 24 is by front smoke box 9 side plates 23 and front vertical plate 6 welding, the small-bore smoke pipe 12 of several of tertiary circuit and front tube sheet 24, back vertical plate 15 welding, back smoke box 16 is welded on the back vertical plate 15, constitutes the flue gas recirculation of whole boiler, and the water jacket that forms between flue gas recirculation structure and the body of heater shell is the water cyclic space.Be provided with outlet pipe 13, atmospheric communicating pipe 14 in upper of furnace body, body of heater back vertical plate 15 is provided with the water circulation structure of blow-off pipe 19, water inlet pipe 18 formation boilers.High-temperature flue gas flows through these surfaces successively and carries out heat exchange with water; Cold water bottom making is heated into hot water and is drawn by outlet pipe after circulation.9 places are provided with inspection door 7 at front smoke box, and back smoke box 16 is established shoot door 17, and combustion chamber access door 3 is established in flue 1 front portion.Before inspection door 7 usefulness bolts 22 be fixed on the header board 6 and can about open 10 flue gas perturbation actions of spinning disk of installations in the smoke pipe 12.Glory hole 4 is fixed on the access door 3.Burner 2 usefulness flanges are connected on the access door 3.

Use mineral wool 5 as heat-insulation material between boiler body and the boiler external packing; Controller 11 is installed on the boiler casing, 2 operations of control burner; Boiler body is welded on the base 20.

Claims

1, a kind of normal pressure three loop fuel oil (gas) hot-water boilers are included in upper of furnace body and are provided with outlet pipe, atmospheric communicating pipe, and the body of heater back vertical plate is provided with the water circulation structure of blow-off pipe, water inlet pipe formation boiler; It is characterized in that boiler body is made of forward and backward riser and two semi-circular cylindrical body assembly weldings; The heat transfer part is made of flue gas three loops of boiler flue, heavy caliber smoke pipe, small-bore smoke pipe and front and back smoke box; Flue is anterior to be welded with front vertical plate, the rear portion communicates with the welding of heavy caliber smoke pipe one end, the other end of heavy caliber smoke pipe welds mutually with front tube sheet, front tube sheet is by front smoke box side plate and front vertical plate welding, small-bore smoke pipe of several of tertiary circuit and front tube sheet, back vertical plate welding, back smoke box is welded on the back vertical plate, constitutes the flue gas recirculation of whole boiler, and the water jacket that forms between flue gas recirculation structure and the body of heater shell is the water cyclic space; The place is provided with inspection door at front smoke box, and back smoke box is established shoot door, and the combustion chamber access door is established in the flue front portion; Glory hole is fixed on the access door.