CN2292215Y

CN2292215Y - No return combustion chamber oil (gas) burning boiler

Info

Publication number: CN2292215Y
Application number: CN 96248136
Authority: CN
Inventors: 贺艺科; 安丰宝
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-25
Filing date: 1996-10-25
Publication date: 1998-09-23
Anticipated expiration: 2006-10-25

Abstract

The utility model relates to an oil (gas) wet-back boiler with no return combustion chamber. The utility model saves the return combustion chamber which is commonly used by oil (gas) burning boiler with three back strokes on structure. The straight smoke tube of the traditional second back stroke is changed into a smoke tube with an elbow. The elbow end is directly connected with the smoke outlet holes of the back part of the cylinder body of a boiler container. The utility model has the advantages of simple structure, convenient manufacture and maintenance, good smoke gas sealing performance, fast temperature rising (pressure rising), high heat speed, no smoke dust pollution, and good environmental protection performance, and is suitable for the steam and hot water supply and heating of the modern architectures of the large and medium cities.

Description

There is not the wet back of the body of chamber fuel oil (gas) boiler that strile-backs

The utility model relates to the strile-back wet back of the body of fuel oil (gas) boiler of chamber of a kind of nothing, belongs to fuel oil (gas) boiler technology field.

Along with the raising day by day of environmental requirement, for adapting to urban modernization building needs, fuel oil (gas) boiler is just progressively promoted in each big and medium-sized cities at present.Modern fuel oil (gas) boiler mostly adopts horizontal shell three return structures, in the boiler heat-transfer process, for making flue gas enter second backhaul (smoke pipe) by first backhaul (flue inside), traditional fuel oil (gas) boiler all is provided with a chamber of strile-bacing for the high-temperature flue gas turning at the flue rear portion, this cell structure that strile-backs can be dried back of the body formula (rear portion, chamber of strile-bacing is made by refractory material), also can be wetting back-type (chamber of strile-bacing all is welded by steel plate, and the outside directly contacts with water).Dried back of the body formula is simple in structure, easy to maintenance, but the flue gas sealing property is relatively poor; Wet back of the body boiler smoke good airproof performance, but owing to have the chamber of strile-bacing, so complex structure, the manufacturing maintenance is also inconvenient.

The utility model is for solving a kind of nothing that above-mentioned deficiency the designs wet back of the body of chamber fuel oil (gas) boiler that strile-backs, and the advantage of its existing good seal performance has simple in structurely again, makes characteristics easy to maintenance.

The utility model is achieved in that cylindrical shape flue rear end is directly connected with furnace gall head, form a straight cannular combustion chamber of not taking back the combustion chamber, have venthole (its quantity, diameter and distance are calculated by heating power calculating, intensity and determined) at the flue end; The second backhaul smoke pipe is made up of the smoke pipe of band elbow, and its shape is: traditional straight smoke pipe of second backhaul is become the smoke pipe of an end band elbow, and will directly be connected on the flue venthole with an end of elbow, the other end is connected on the front tube sheet.The 3rd backhaul smoke pipe still adopts traditional straight smoke pipe.The maximum difference structurally of the utility model and traditional three backhaul fuel oil (gas) boilers has been to cancel the chamber of strile-bacing between first backhaul and second backhaul, and the second backhaul smoke pipe is changed into the smoke pipe of band elbow.

Below with reference to reaching embodiment in conjunction with the accompanying drawings the utility model is further described.

Accompanying drawing 1 is the front view of the utility model fuel oil (gas) boiler; Fig. 2 is the A--A cutaway view.With reference to accompanying drawing, the utility model is made up of the smoke pipe 4 of: combustor 1, flue 2, front smoke box 3, band elbow, straight smoke pipe 5, front tube sheet 6, drum 7, base 8, back tube sheet 9, back smoke box 10, chimney 11, furnace gall head 12, bearing 13.Flue 2 and furnace gall head 12 are formed the combustion chamber, and its rear portion has outlet flue, and the smoke pipe 4 of combustion chamber, shell 7, front tube sheet 6, back tube sheet 9, band elbow, straight smoke pipe 5, base 8 etc. have constituted the body of the wet back of the body of fuel oil (gas) boiler.As then all being full of water in the body for hot-water boiler, as for steam boiler then the body bottom be the hydrospace, top is air space.The smoke pipe 4 of band elbow has an end of elbow to connect with outlet flue on the flue 2, and the other end connects with front tube sheet 6, and directly the two ends of smoke pipe 5 connect with front tube sheet 6 and back tube sheet 9 respectively.Front smoke box 3 is that flue gas enters the turning chamber of the 3rd backhaul by second backhaul, wherein is covered with flame-proof thermal insulation material.Bearing 13 is supports of boiler body.

During boiler operatiopn, fuel oil (gas) is sprayed in the combustion chamber of being made up of flue 2 and furnace gall head 12 by combustor 1, the high-temperature flue gas that burning produces in the combustion chamber by flowing behind the forward direction, and heat passed to medium in the body by flue 2, flue gas to combustion chamber end enters the venthole on the flue 2, and the smoke pipe 4 through being with elbow flows to front smoke box 3; Enter straight smoke pipe 5 again, by flowing behind the forward direction, after smoke box 10 enters atmosphere by chimney 11.

In the utility model boiler, flue is a radiation heating-surface, and the smoke pipe of band elbow is a convection heating surface with straight smoke pipe, and high-temperature flue gas is passed to medium in the boiler body by them with heat, thereby produces steam, hot water or other medium.Flue 2 can be that straight flue also can be a corrugated flue, and furnace gall head 12 can be respectively dull and stereotyped or pull the banding head according to boiler pressure-bearing situation; Flue and end socket diameter are generally 300---1000mm, and wall thickness is generally 6---22mm.The smoke pipe 4 of band elbow can be a common steel tube, also can be threaded flue, and interior ring helps the efficient heat conducting tube of pipe and band disturbing flow device, and its external diameter is generally 25---63.5mm.The elbow of the smoke pipe 4 of band elbow partly can directly bend with bending machine, also can adopt punched bend to connect.

The body of the utility model boiler can adopt horizontal type structure to arrange also can adopt the vertical structure layout.

The utility model boiler is an oil burning boiler when adopting Oil-combustion combusting machine, is gas fired-boiler when adopting gas burner system.

The utility model boiler had both overcome the wet back of the body of traditional three backhaul fuel oils (gas) boiler structure and had reached The shortcoming of manufacturing process complexity, also avoided dried back of the body boiler furnace outlet refractory material easily burn, The disadvantage of poor sealing performance has novel structure, the simple characteristics of manufacturing process, and the thermal efficiency is 85-89%, blackness of exhaustion are 0 grade of Lin Geman, can make in a class area of national regulation With.

Claims

1. a nothing wet back of the body of fuel oil (gas) boiler of chamber that strile-backs, structurally cancelled the chamber of strile-bacing that traditional three backhaul fuel oil (gas) boilers generally adopt, this boiler is to be made of elements such as the smoke pipe of combustor, garden tubular flue, band elbow, straight smoke pipe and shells, it is characterized in that the direct and flat head welding in flue rear end; The flue rear portion has venthole; Flue gas second backhaul is made up of the smoke pipe of band elbow, and an end of its band elbow connects with the flue venthole, and the other end connects with tube sheet.

2. the nothing according to claim 1 wet back of the body of chamber fuel oil (gas) boiler that strile-backs is characterized in that the combustion chamber is to be connected with furnace gall head by the tubular flue to form.

3. the nothing according to claim 1 and 2 wet back of the body of chamber fuel oil (gas) boiler that strile-backs is characterized in that having venthole on its furnace wall.

4. the nothing according to claim 1 wet back of the body of chamber fuel oil (gas) boiler that strile-backs, its special domestic animal is that its second backhaul smoke pipe is to be made of the smoke pipe that is arranged in flue paripheral zone elbow, an end of its band elbow directly connects with the flue outlet flue.

5. the nothing according to claim 2 wet back of the body of chamber fuel oil (gas) boiler that strile-backs is characterized in that flue can be straight flue or corrugated flue, and furnace gall head can be pulls limit or flat-plate closure.

6. according to claim 1 or the 4 described nothings wet back of the body of chamber fuel oil (gas) boiler that strile-backs, it is characterized in that the smoke pipe with elbow can be a common steel tube, also can be screwed pipe, and interior ring helps pipe and other efficient heat conducting tube; Elbow part can be an one with straight section, also can adopt 90 ° of punched bends.

7. according to claim 1 or 2 or 3 or the 4 or 5 described nothings wet back of the body of chamber fuel oil (gas) boiler that strile-backs, it is characterized in that body can adopt horizontal layout, also can vertically arrange.