CN217816679U - Dry-back type gas-steam boiler - Google Patents

Abstract

The utility model discloses a dry back formula gas steam boiler, which comprises a housin, the combustor is installed to the one end outer wall of casing, and the inside of casing is close to combustor department and is provided with the stove courage, and the inside middle part of casing is provided with the combustion chamber, and the combustion chamber is first return stroke, and the one end that the stove courage was kept away from to the combustion chamber is provided with back smoke box, and the one end that back smoke box was kept away from to the inside of casing is provided with preceding smoke box, is connected through second return stroke tobacco pipe between back smoke box and the preceding smoke box, and the inside upper portion department that lies in back smoke box of casing is provided with out the cigarette storehouse. The dry-back type gas steam boiler has the advantages that the combustion heat efficiency is high, the smoke exhaust temperature is effectively reduced, the energy is saved, the consumption is reduced, the use is more economical, the corrugated furnace pipe and the threaded smoke pipe structure are adopted, the heat absorption strength of the boiler is improved, the requirement of heat expansion of a heat exchange surface is met, the dry-back type gas steam boiler is scientific, reasonable and durable, the smoke passes through the three-return-stroke design, the corrugated furnace pipe is adopted in a combustion chamber, the heat exchange surface and the strength are greatly improved, and the heat exchange efficiency of the smoke is improved.

Description

Dry-back type gas-steam boiler

Technical Field

The utility model relates to the technical field of boilers, specifically speaking relates to a dry-back type gas steam boiler.

Background

The steam boiler is characterized in that gas fuels such as natural gas, liquefied gas, urban gas and the like are used as fuels, the existing steam boiler comprises a dry-back type and a wet-back type, the steam boiler refers to boiler equipment for producing steam, the existing steam boiler belongs to special equipment, the design, production, delivery and installation of the existing steam boiler are required to be checked by national technical supervision departments, a user needs to obtain a boiler use certificate to operate the boiler, the existing steam boiler is different from an ordinary pressure boiler, the delivery of the existing steam boiler is required to be provided with boiler procedures, and the boiler procedures comprise a boiler body diagram, an installation diagram, an instrument valve diagram, a pipeline diagram, an inspection qualification certificate and the like.

The patent that the publication number is CN210373506U discloses a smoke box before dry back formula boiler, including planking and inner panel, the planking with the inner panel passes through curb plate fixed connection, the planking the inner panel with form the inner chamber between the curb plate, the inner chamber intussuseption aluminum silicate fibre forms the insulating layer, the planking middle part is provided with the combustor mounting panel, the outer loop of combustor mounting panel passes through the fixed setting of connecting plate on the planking, the combustor mounting panel with vacuole formation between the planking still includes the through-hole, the through-hole runs through the combustor mounting panel the planking the inner chamber with the inner panel, the through-hole sets up the inner chamber part is provided with the drum, the drum both ends respectively with the planking with inner panel fixed connection has reduced the heat that the combustor mounting panel received, has reduced the damage of combustor, the live time of extension combustor, the cost is reduced.

Although this technical scheme has reduced the damage of combustor, the live time of extension combustor, the cost is reduced, but the flow path of flue gas is shorter, leads to the exhaust flue gas stable higher, and the flue gas is lower at the inside heat exchange efficiency of boiler, causes a large amount of energy extravagant.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dry back formula gas steam boiler to solve the problem that proposes among the above-mentioned background art.

For realizing the above-mentioned purpose, the utility model provides a dry back formula gas steam boiler, which comprises a housin, the combustor is installed to the one end outer wall of casing, the inside of casing is close to combustor department and is provided with the stove courage, the inside middle part of casing is provided with the combustion chamber, the combustion chamber is first return stroke, the one end that the stove courage was kept away from to the combustion chamber is provided with the back smoke box, the one end that the back smoke box was kept away from to the inside of casing is provided with preceding smoke box, be connected through second return stroke tobacco pipe between back smoke box and the preceding smoke box, the inside upper portion department that is located the back smoke box of casing is provided with out the cigarette storehouse, be connected through third return stroke tobacco pipe between preceding smoke box and the play cigarette storehouse.

Preferably, the outer wall of the shell is provided with an insulating layer.

Preferably, a bracket is mounted at the bottom of the housing.

Preferably, the top of the shell is sequentially provided with a pressure gauge, a steam outlet pipe and a safety valve, and the pressure gauge is provided with a pressure controller.

Preferably, the water level meters are symmetrically arranged on two sides of the top of the shell, a water inlet pipe is arranged in the middle of one side of the shell, a drain pipe is arranged at the bottom of the other side of the shell, and a drain valve is arranged on the drain pipe.

Preferably, the outer wall of the combustion chamber has a corrugated structure.

Preferably, a smoke outlet is arranged at the top of the smoke outlet bin.

Preferably, the third return smoke pipe and the second return smoke pipe both adopt a threaded smoke pipe structure.

Compared with the prior art, the beneficial effects of the utility model are that:

the dry-back type gas steam boiler has the advantages that the combustion heat efficiency is high, the smoke exhaust temperature is effectively reduced, the energy is saved, the consumption is reduced, the use is more economical, the corrugated furnace pipe and the threaded smoke pipe structure are adopted, the heat absorption strength of the boiler is improved, the requirement of heat expansion of a heat exchange surface is met, the dry-back type gas steam boiler is scientific, reasonable and durable, the smoke passes through the three-return-stroke design, the corrugated furnace pipe is adopted in a combustion chamber, the heat exchange surface and the strength are greatly improved, and the heat exchange efficiency of the smoke is improved.

Drawings

Fig. 1 is a front schematic structural view of the present invention;

fig. 2 is a schematic side view of the present invention;

fig. 3 is a schematic top view of the present invention.

The various reference numbers in the figures mean:

1. a housing; 11. a heat-insulating layer; 12. a support; 13. a pressure gauge; 131. a pressure controller; 14. a steam outlet pipe; 15. a safety valve; 16. a water level gauge; 17. a water inlet pipe; 18. a sewage discharge pipe; 2. a burner; 3. a furnace pipe; 4. a combustion chamber; 5. a rear smoke box; 6. a second return smoke pipe; 7. a front smoke box; 8. a third return smoke pipe; 9. a cigarette discharging bin; 91. a smoke outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the definitions of "first", "second" and "third" features may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Example 1

The utility model provides a dry back formula gas steam boiler, as shown in fig. 1-3, including casing 1, combustor 2 is installed to the one end outer wall of casing 1, be used for burning, casing 1's inside is close to combustor 2 and locates to be provided with furnace pipe 3, casing 1's inside middle part is provided with combustion chamber 4, flame is pressure-fired burning in big combustion chamber 4 a little, combustion chamber 4 is first return stroke, the one end that furnace pipe 3 was kept away from to combustion chamber 4 is provided with back smoke box 5, the inside one end of keeping away from back smoke box 5 of casing 1 is provided with preceding smoke box 7, be connected through second return stroke tobacco pipe 6 between back smoke box 5 and the preceding smoke box 7, the inside upper portion department that is located back smoke box 5 of casing 1 is provided with smoke outlet bin 9, be connected through third return stroke tobacco pipe 8 between preceding smoke box 7 and the smoke outlet bin 9, high temperature flue gas after the burning loops through combustion chamber 4, back smoke box 5, second return stroke tobacco pipe 6, preceding smoke box 7, third return stroke tobacco pipe 8, smoke outlet bin 9, thereby guarantee that the flue gas carries out abundant heat exchange.

In this embodiment, the outer wall of the casing 1 is provided with the heat insulating layer 11, and the heat insulating layer 11 is made of asbestos material to prevent heat loss.

Specifically, a bracket 12 is installed at the bottom of the housing 1, and is used for supporting and fixing the bottom of the housing 1.

Further, a pressure gauge 13, a steam outlet pipe 14 and a safety valve 15 are sequentially installed on the top of the casing 1, and a pressure controller 131 is installed on the pressure gauge 13 and used for controlling the pressure inside the casing 1.

Furthermore, level gauges 16 are symmetrically installed on two sides of the top of the shell 1 and used for monitoring the water level in the shell 1, a water inlet pipe 17 is installed in the middle of one side of the shell 1 and used for water entering, a sewage discharge pipe 18 is installed at the bottom of the other side of the shell 1 and used for discharging sewage, and a sewage discharge valve is installed on the sewage discharge pipe 18.

Example 2

In order to further improve the heat exchange effect, on the basis of the embodiment 1, the outer wall of the combustion chamber 4 is of a corrugated structure, so that the heating surface is increased, and the strength of the combustion chamber 4 is greatly improved, thereby ensuring the full utilization of heat, improving the heat absorption strength of the boiler, meeting the requirement of the heat exchange surface on thermal expansion, and being scientific, reasonable and durable.

Furthermore, the top of the cigarette outlet 9 is provided with a cigarette outlet 91 to ensure the discharge of smoke.

Furthermore, the third return-stroke smoke tube 8 and the second return-stroke smoke tube 6 both adopt a threaded smoke tube structure, so that the heating surface is increased, the strength of the third return-stroke smoke tube 8 and the second return-stroke smoke tube 6 is greatly improved, the long-time use is ensured not to be damaged, the heat absorption strength of the boiler is improved, the requirement of the heat exchange surface on thermal expansion is met, and the novel smoke tube is scientific, reasonable and durable.

The utility model discloses a dry back type gas steam boiler is when using, firstly let in water in casing 1 from inlet tube 17, rethread combustor 2 burns, flame is the pressure fired in big combustion chamber 4, the complete extension, the burning continues the rear portion, the export flue gas temperature of combustion chamber 4 is between 1000 ~ 1100 ℃, high temperature flue gas gets into back smoke box 5 after leaving combustion chamber 4, get into second return stroke tobacco pipe 6 after back smoke box 5 turns back, get into in preceding smoke box 7 in the one end of second return stroke tobacco pipe 6, turn 180 again and get into third return stroke tobacco pipe 8 in preceding smoke box 7, after third return stroke tobacco pipe 8 fully absorbs heat, get into the chimney and discharge into the atmosphere by outlet 91, the heat that the fuel burnt out in the device, heat the water in heating casing 1, and make it steam to make it, water rises and produces steam by the energy heating temperature that gas fuel burning vaporization constantly releases in casing 1, because the boiling point of water rises along with the rising of pressure, casing 1 is sealed, the expansion of water is in the inside receives the restriction and is formed the thermal power.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A dry-back gas-fired steam boiler comprising a housing (1), characterized in that: combustor (2) are installed to the one end outer wall of casing (1), the inside of casing (1) is close to combustor (2) and locates to be provided with stove courage (3), the inside middle part of casing (1) is provided with combustion chamber (4), combustion chamber (4) are the first return stroke, the one end that stove courage (3) were kept away from in combustion chamber (4) is provided with back smoke box (5), the one end that back smoke box (5) were kept away from in the inside of casing (1) is provided with preceding smoke box (7), be connected through second return stroke tobacco pipe (6) between back smoke box (5) and preceding smoke box (7), the inside upper portion department that is located back smoke box (5) of casing (1) is provided with smoke outlet bin (9), connect through third return stroke tobacco pipe (8) between preceding smoke box (7) and smoke outlet bin (9).

2. A dry-backed gas steam boiler according to claim 1, wherein: and the outer wall of the shell (1) is provided with a heat-insulating layer (11).

3. A dry-back gas-to-steam boiler according to claim 1, wherein: the bottom of the shell (1) is provided with a bracket (12).

4. A dry-backed gas steam boiler according to claim 1, wherein: the top of the shell (1) is sequentially provided with a pressure gauge (13), a steam outlet pipe (14) and a safety valve (15), and the pressure gauge (13) is provided with a pressure controller (131).

5. A dry-back gas-to-steam boiler according to claim 1, wherein: the water level meter is characterized in that water level meters (16) are symmetrically installed on two sides of the top of the shell (1), a water inlet pipe (17) is installed in the middle of one side of the shell (1), a sewage discharge pipe (18) is installed at the bottom of the other side of the shell (1), and a sewage discharge valve is installed on the sewage discharge pipe (18).

6. A dry-backed gas steam boiler according to claim 1, wherein: the outer wall of the combustion chamber (4) is of a corrugated structure.

7. A dry-backed gas steam boiler according to claim 1, wherein: the top of the cigarette outlet bin (9) is provided with a cigarette outlet (91).

8. A dry-backed gas steam boiler according to claim 1, wherein: and the third return smoke pipe (8) and the second return smoke pipe (6) both adopt a threaded smoke pipe structure.

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