CN203642144U

CN203642144U - Oil-gas type shell boiler

Info

Publication number: CN203642144U
Application number: CN201320719000.8U
Authority: CN
Inventors: 卢海刚; 任惠军; 孙交成; 卢海涛
Original assignee: ANYANG FANGKUAI BOILER Co Ltd
Current assignee: FangKuai Boiler Co., Ltd.
Priority date: 2013-11-15
Filing date: 2013-11-15
Publication date: 2014-06-11
Anticipated expiration: 2023-11-15

Abstract

The utility model discloses an oil-gas type shell boiler which comprises a boiler hearth, a combustor connection opening formed in the front surface of the boiler, a furnace pipe for combusting fuel, and a second return pipe and a third return pipe which are arranged on the middle part of the boiler, a reversal chamber which is used for connecting the second return pipe with the furnace pipe and is arranged on the end part, an in-front-of-boiler smoke box which is used for connecting the second return pipe with the end part of the front surface of the third return pipe, and a smoke discharging opening formed in the top of the boiler, wherein a membrane type wall in the reversal chamber consists of water pipes and flat metals. According to the technology, the heat receiving areas of the water pipes in the boiler is enlarged, the rising speed of water temperature in the water pipes is increased, the water evaporation speed of the boiler is increased, the maximum evaporation amount of the shell boiler is broken through, and heating fuel can be saved.

Description

A kind of oil gas type smaller hard flour pancake boiler

Technical field

A kind of oil gas type smaller hard flour pancake boiler, particularly a kind of smaller hard flour pancake boiler take oil gas as fuel, belongs to field of boilers.

Background technology

All the time, as the boiler of heating equipment, mainly to use coal to heat.Coal-burning boiler can produce a large amount of flue gases, meeting contaminated air, and meanwhile, the slag of burning is also a kind of environmental contaminants.

In the last few years, China had found and had exploited a large amount of natural gases, had set up the long distance gas transmission pipeline of transfering natural gas from the west to the east, meanwhile, had introduced external natural gas, fuel oil etc., and comparatively hydrocarbon rich resource is provided.

Along with the raising of urban life level, improve the consciousness of living environment and improve gradually, boiler is also to energy saving and environment friendly future development.Due to oil gas type fuel have be easy to carry and easy to use, environmental pollution is minimum, calorific capacity high, due to oil gas type fuel have be easy to conveying and easy to use, environmental pollution is minimum, calorific capacity high.With oil, gas Substitute coal becomes the developing direction that boiler heats.

After starting to put on market as the boiler plant of fuel using fuel oil and combustion gas, environmental quality is greatly improved, and therefore, uses clean energy resource boiler through becoming a kind of trend.Some areas start restriction and build coal heating boiler, bring into use natural gas, oil burning boiler.

But, because boiler is pressure vessel, in order to ensure safety, there is strict administrative standard in country, in the smaller hard flour pancake boiler of existing structure, if thought under the premise that security is guaranteed, in the boiler of existing specification, improve boiler capacity, the thickness that just need to thicken furnace wall, flue wall thickness is too thick, will increase the consumption of oil gas, reduce the efficiency of fuel, say to a certain extent, wasted the energy, increased operating cost.Also exceeded the national standard of smaller hard flour pancake boiler return combustion chamber part flue wall thickness, up to the present, in national return combustion chamber flue wall thickness critical field, the maximum boiler capacity of general miniature boiler can only reach 20T simultaneously.

Therefore, within the scope of national standard, how in original specification limit, to improve the evaporation capacity of boiler, become the technical bottleneck of many boiler makers man.

Summary of the invention

The technical problem that the utility model solves is in national return combustion chamber flue wall thickness critical field, the problem that the evaporation capacity of boiler is difficult to be improved, the utility model provides a kind of oil gas type smaller hard flour pancake boiler, its object is exactly will be in national specification limit, in the boiler of former specification, improve the additional issue amount of steam, make the larger effect of boiler performance.

The technical scheme that the utility model is taked is: a kind of oil gas type smaller hard flour pancake boiler, comprise boiler furnace be arranged on the second return duct in the middle of flue, the boiler of burner interface before boiler, fuel combustion and the 3rd return duct, for be connected the second return duct and flue end return combustion chamber, be connected the second return duct and the stokehold smoke box of the 3rd return duct front end and the exhaust opening at boiler top, in described return combustion chamber, formed membrane wall by water pipe and flat metal.

In described return combustion chamber, between water pipe and flat metal, interconnect.Flat bonding jumper in described return combustion chamber is connected with a water pipe more than having two at least.

This kind of oil gas type smaller hard flour pancake boiler has increased the heating surface area of boiler inner conduit, can accelerate the hoisting velocity of water temperature in water pipe, improves the water evaporation rate of boiler, has broken through the evaporation capacity of smaller hard flour pancake boiler, can save heating fuel.

Accompanying drawing explanation

Fig. 1 is traditional dry back of the body formula three backhaul smaller hard flour pancake boiler side cut away view.

Fig. 2 is the back side profile of oil gas type smaller hard flour pancake boiler return combustion chamber.

The specific embodiment

Describe with regard to specific embodiment of the invention method referring to Fig. 1, Fig. 2.

Fig. 1 is traditional dry back of the body formula three backhaul smaller hard flour pancake boiler side cut away view.In figure 100: return combustion chamber, 101, front smoke box, 102: smoke box, 103: burner interface, 104: burner hearth, 105: corrugated flue, 106: the second return duct, 107: the three return duct.

The burner being connected on burner interface 103 is lighted combustion gas or fuel oil, burning in burner hearth 104, in order to prevent flue expanded by heating, generally be designed to be able to alleviate the corrugated flue 105 of thermal expansion, flue gas after burning enters the second return duct 106 through return combustion chamber 100, enter again subsequently in the 3rd return duct 107, through repeatedly coming and going mobile flue gas, the water heating in boiler is become to steam (or hot water) and send use.

Fig. 2 is the back side profile of oil gas type smaller hard flour pancake boiler return combustion chamber.In figure 200: flat metal article, 106: the second return duct, 107: the three return duct.

In the technical program, in return combustion chamber, be provided with water pipe and flat metal bar 200 forms membrane wall, between water pipe and flat metal 100, there is coupling part, have at least 2 flat metal bar 200 one end to be connected with water pipe, it is more that bonding jumper 200 is connected with water pipe, the flat metal bar 200 heating in return combustion chamber is delivered to the heat energy of water pipe will be faster, the speed of the water in heating pipe is also just faster, many flat metal bars 200 that arrange in return combustion chamber 100, increase flame firing rate to membrane wall in return combustion chamber 100, by the flue gas after return combustion chamber 100, subsequently along the second return duct 106, the 3rd return duct 107 circulates, finally get rid of from flue.

The good effect that the oil gas type smaller hard flour pancake boiler that this membrane wall being connected with water pipe by many flat metals forms brings is: can improve the heat intensity of water pipe, accelerate the hoisting velocity of water temperature, accelerate the evaporation rate of steam.Compare with existing same size, utilize the boiler of the utility model structure, broken through the evaporability of maximum 20 t/h of evaporation capacity in the past, utilize the boiler of same size, the in the situation that of equal fuel, increase substantially water evaporation ability, save to a certain extent the energy.

Claims

1. an oil gas type smaller hard flour pancake boiler, comprise boiler furnace be arranged on the second return duct in the middle of flue, the boiler of burner interface before boiler, fuel combustion and the 3rd return duct, for be connected the second return duct and flue end return combustion chamber, be connected the second return duct and the stokehold smoke box of the 3rd return duct front end and the exhaust opening at boiler top, it is characterized in that: in described return combustion chamber, formed membrane wall by water pipe and flat metal.

2. a kind of oil gas type smaller hard flour pancake boiler according to claim 1, is characterized in that: in described return combustion chamber, between water pipe and flat metal, interconnect.

3. a kind of oil gas type smaller hard flour pancake boiler according to claim 1, is characterized in that: the flat bonding jumper in described return combustion chamber is connected with a water pipe more than having two at least.