阅读说明：本技术 一种采用新型换热方式的立式燃油燃气锅壳锅炉 (Vertical oil-gas boiler shell boiler adopting novel heat exchange mode ) 是由 白鹤峰 冯彦香 刘洋 叶毕彬 陈会田 杨琦 于 2021-09-10 设计创作，主要内容包括：本发明提供了一种采用新型换热方式的立式燃油燃气锅壳锅炉,包括：立式炉体,其内设有锅炉水；炉胆,用于产生带有热量的烟气；烟室,其进气端与所述炉胆连通,出气端与设置在所述烟室顶部的烟囱连接并将烟气排出；换热管,间隔设有多根,设置在所述烟室内,其两端与所述烟室相连并与所述烟室的外部连通,其内流通有锅炉水；所述换热管为外侧有用于增大换热面积的鳍片的鳍片管,本发明通过通过设置烟室及带有鳍片的换热管,烟气进入烟室内与在换热管内流通的锅炉水进行换热,烟气垂直冲刷换热管,可以得到更高的换热效率；烟室的侧壁与锅炉水接触,同样可以进行换热,进一步提高换热效率。(The invention provides a vertical oil-gas boiler shell boiler adopting a novel heat exchange mode, which comprises: the vertical furnace body is internally provided with boiler water; the furnace pipe is used for generating flue gas with heat; the gas inlet end of the smoke chamber is communicated with the furnace pipe, and the gas outlet end of the smoke chamber is connected with a chimney arranged at the top of the smoke chamber and discharges smoke; a plurality of heat exchange tubes are arranged at intervals in the smoke chamber, two ends of each heat exchange tube are connected with the smoke chamber and communicated with the outside of the smoke chamber, and boiler water flows through the heat exchange tubes; the heat exchange tube is a fin tube with fins on the outer side for increasing the heat exchange area, and by arranging the smoke chamber and the heat exchange tube with the fins, smoke enters the smoke chamber to exchange heat with boiler water circulating in the heat exchange tube, and the smoke vertically scours the heat exchange tube, so that higher heat exchange efficiency can be obtained; the side wall of the smoke chamber is contacted with boiler water, and heat exchange can be carried out similarly, so that the heat exchange efficiency is further improved.)

1. The utility model provides an adopt vertical fuel gas pot shell boiler of novel heat transfer mode which characterized in that includes:

the vertical furnace body is internally provided with boiler water;

the furnace pipe is used for generating flue gas with heat;

the gas inlet end of the smoke chamber is communicated with the furnace pipe, and the gas outlet end of the smoke chamber is connected with a chimney arranged at the top of the smoke chamber and discharges smoke;

and a plurality of heat exchange tubes are arranged in the smoke chamber at intervals, two ends of each heat exchange tube are connected with the smoke chamber and communicated with the outside of the smoke chamber, and boiler water flows through the heat exchange tubes.

2. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode as claimed in claim 1, wherein the heat exchange tube is a finned tube provided with fins for increasing the heat exchange area on the outer side.

3. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode as claimed in claim 2, wherein one end of the heat exchange tube is provided with a flared opening with a diameter larger than or equal to that of the fin, a reducing fin tube with two different diameters is formed, and two opposite side walls of the smoke chamber are respectively provided with mounting holes corresponding to two ends of the heat exchange tube.

4. The vertical oil and gas fired boiler shell boiler adopting the novel heat exchange manner as claimed in claim 3, wherein the flared opening is cylindrical or conical.

5. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode as claimed in claim 1, wherein the heat exchange tubes are arranged in an array manner or in a staggered manner or in a combination manner.

6. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode according to any one of claims 1 to 5, wherein the heat exchange pipe is arranged perpendicular to the flow direction of the flue gas.

7. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode as claimed in claim 6, wherein the furnace and the smoke chamber are both vertically arranged, the smoke chamber is arranged at one side of the furnace, the top of the furnace is connected with the burner, and the bottom of the furnace is communicated with the air inlet end of the smoke chamber.

8. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode as claimed in claim 6, wherein the furnace is arranged below the smoke chamber, one end of the furnace is connected with the burner, and the other end of the furnace is communicated with one side of the smoke chamber far away from the burner.

9. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode as claimed in claim 8, wherein a partition plate for changing the flow direction of flue gas is arranged in the flue chamber, the partition plate divides the flue chamber into a process space and a return space, an opening is formed in one end of the partition plate and used for communicating the process space with the return space, the bottom of one end, far away from the opening, of the process space is communicated with the boiler furnace, and the top of one end, far away from the opening, of the return space is communicated with the chimney.

10. The vertical oil and gas boiler shell boiler adopting the novel heat exchange mode as claimed in claim 8, wherein the heat exchange tubes and the partition plates are both vertically arranged or both horizontally arranged.

Technical Field

The invention relates to the technical field of vertical boilers, in particular to a vertical oil-gas boiler shell boiler adopting a novel heat exchange mode.

Background

Vertical internal combustion oil (gas) fired boilers are an important product in industrial boilers. The boiler comprises an upper pipe plate, a boiler shell, a smoke pipe, a furnace pipe, a lower pipe plate, a burner connecting pipe and the like, wherein all the parts are connected together by welding.

The convection heating surface is a smoke tube, which is a fire tube boiler. The evaporation rate per unit area is low, the heat exchange efficiency is low, a large number of smoke tubes need to be arranged for improving the heat exchange efficiency, the manufacturing workload is large, tube holes for the smoke tubes to be arranged in need to be drilled in the tube plates, and the tube plates are prone to cracking.

Disclosure of Invention

The invention aims to provide a vertical oil and gas boiler shell boiler adopting a novel heat exchange mode, which can improve the heat exchange efficiency;

the invention provides a vertical oil-gas boiler shell boiler adopting a novel heat exchange mode, which comprises:

the vertical furnace body is internally provided with boiler water;

the furnace pipe is used for generating flue gas with heat;

the gas inlet end of the smoke chamber is communicated with the furnace pipe, and the gas outlet end of the smoke chamber is connected with a chimney arranged at the top of the smoke chamber and discharges smoke;

and a plurality of heat exchange tubes are arranged in the smoke chamber at intervals, two ends of each heat exchange tube are connected with the smoke chamber and communicated with the outside of the smoke chamber, and boiler water flows through the heat exchange tubes.

In a preferred embodiment, the heat exchange tube is a fin tube, and fins for increasing the heat exchange area are arranged on the outer side of the fin tube.

In a preferred embodiment, one end of the heat exchange tube is provided with a flared opening with the diameter larger than or equal to the diameter of the fins, so that the different-diameter fin tubes with different diameters at two ends are formed, and two opposite side walls of the smoke chamber are respectively provided with mounting holes corresponding to two ends of the heat exchange tube.

In a preferred embodiment, the flare is cylindrical or conical.

In a preferred embodiment, the heat exchange tubes are arranged in an array or staggered arrangement or a combination of the two.

In a preferred embodiment, the heat exchange tubes are arranged perpendicular to the direction of flue gas flow.

In a preferred embodiment, the furnace pipe and the smoke chamber are both vertically arranged, the smoke chamber is arranged on one side of the furnace pipe, the top of the furnace pipe is connected with the burner, and the bottom of the furnace pipe is communicated with the air inlet end of the smoke chamber.

In a preferred embodiment, the furnace pipe is arranged below the smoke chamber, one end of the furnace pipe is connected with the burner, and the other end of the furnace pipe is communicated with one side of the smoke chamber far away from the burner.

In a preferable embodiment, a partition plate used for changing the flow direction of flue gas is arranged in the flue gas chamber, the partition plate divides the flue gas chamber into a process space and a return space, an opening is formed in one end of the partition plate and used for communicating the process space with the return space, the bottom of one end, far away from the opening, of the process space is communicated with the furnace pipe, and the top of one end, far away from the opening, of the return space is communicated with the chimney.

In a preferred embodiment, the heat exchange tubes and the partition plates are both vertically arranged or both horizontally arranged.

According to the technical scheme, the smoke chamber and the heat exchange tube with the fins are arranged, smoke enters the smoke chamber to exchange heat with boiler water circulating in the heat exchange tube, and the smoke vertically scours the fin tubes, so that higher heat exchange efficiency can be obtained; the side wall of the smoke chamber is contacted with boiler water, and heat exchange can be carried out similarly, so that the heat exchange efficiency is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of example 1 of the present invention;

FIG. 2 is a schematic structural diagram of example 2 of the present invention;

FIG. 3 is a top view of example 2 of the present invention;

FIG. 4 is a schematic structural diagram of embodiment 3 of the present invention;

FIG. 5 is a schematic structural view of a heat exchange tube of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5;

FIG. 7 is a schematic view of the installation of the heat exchange tube of the present invention;

FIG. 8 is a schematic view of the arrangement of heat exchange tubes of the present invention;

description of reference numerals:

1. a vertical furnace body; 2. a furnace pipe; 3. a smoking chamber; 4. a heat exchange pipe; 5. a chimney; 6. a flue pipe is connected; 7. a partition plate; 8. flaring; 9. and (4) opening.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

as shown in fig. 1 and fig. 5 to 8, the present invention provides a vertical oil and gas fired boiler shell boiler using a novel heat exchange method, comprising:

the vertical furnace body 1 is internally provided with boiler water, is provided with a water inlet and a steam outlet (water outlet) and is connected with steam (water) utilization equipment;

the furnace pipe 2 is provided with a burner, fuel is burnt in the furnace pipe 2, and the fuel is oil or gas and is used for generating smoke with heat;

the gas inlet end of the smoke chamber 3 is communicated with the furnace pipe 2, the gas outlet end of the smoke chamber is connected with a chimney 5 arranged at the top of the smoke chamber 3 and discharges smoke, the top of the chimney 5 extends out of the vertical furnace body 1, fuel is fully combusted in the furnace pipe 2, and heat generated by combustion and the smoke enter the smoke chamber 3 to exchange heat with boiler water so as to heat the boiler water;

a plurality of heat exchange tubes 4 are arranged at intervals and arranged in the smoke chamber 3, two ends of each heat exchange tube are connected with the smoke chamber 3 and communicated with the outside of the smoke chamber 3, and boiler water flows through the heat exchange tubes; the boiler water circulating in the heat exchange tube 4 is heated by the smoke in the smoke chamber 3, the design mode of the traditional boiler is changed, the traditional boiler is that the smoke enters the smoke tube to heat the boiler water positioned on the outer side of the smoke tube, and the smoke enters the smoke chamber 3 to exchange heat with the heat exchange tube to heat the boiler water positioned in the heat exchange tube, so that the surface area of the boiler water in contact with a heat source is increased; boiler water is divided into a plurality of strands to enter the heat exchange tubes 4, the water with the same volume is divided into a plurality of strands to be heated simultaneously, the heating is faster than the heating by stacking together, and the outer surface of the smoke chamber 3 is also contacted with the boiler water and can also be subjected to heat transfer, so that the heat exchange efficiency is further increased.

The heat exchange tube 4 is a fin tube provided with fins for increasing the heat exchange area on the outer side. The fins and the heat exchange tube 4 are integrally arranged and rolled, the fins are arranged on the outer side of the heat exchange tube 4 at intervals, the extending direction is vertical to the extending direction of the heat exchange tube 4, and the heat exchange efficiency is further improved.

One end of the heat exchange tube 4 is provided with a flared opening 8 with the diameter larger than or equal to the diameter of the fins to form a reducing fin tube with different diameters at two ends, and two opposite side walls of the smoke chamber 3 are respectively provided with mounting holes corresponding to two ends of the heat exchange tube 4. The flare 8 is cylindrical or conical. Namely, one end of the heat exchange tube corresponds to the diameter of the original heat exchange tube, the other end of the heat exchange tube corresponds to the flaring opening 8, one end of the heat exchange tube 4 with the original diameter is placed into the smoke chamber 3 from the mounting hole corresponding to the flaring opening 8 and is connected with the corresponding mounting hole, and the two ends of the heat exchange tube 4 are hermetically connected with the mounting hole. Because the heat exchange tube 4 has fins outside, if the method for assembling the reducing heat exchange tube is not adopted, the upper steel plate of the smoke chamber 3 can not be welded, the heat exchange tube 4 with the fins is assembled in the smoke chamber 3, and then the upper steel plate of the smoke chamber 3 is assembled, so that a lot of inconvenience is brought, therefore, the concept of the reducing fin tube is provided, namely, the diameter size of the normal heat exchange tube 4 is manufactured at one end, the diameter of the heat exchange tube 4 is made to be a pattern with a diameter which is slightly larger than the outer diameter of the fins (1-2mm), and the reducing fin tube can be manufactured by adopting a plurality of methods: 1. the method is characterized in that a rolled finned tube is adopted, a section of fin is removed at a specified length, one end of the rolled finned tube is flared directly to form the different-diameter finned tube, and special mechanical equipment is needed for manufacturing the directly flared different-diameter finned tube, so that the manufacturing cost is increased. 2. Therefore, a method for manufacturing the welded different-diameter finned tube is provided, the manufacturing method comprises the steps of manufacturing a flaring 8, welding the flaring 8 and the heat exchange tube 4 together by adopting a welding method, and installing the flaring 8 in the smoke chamber 3 after the welding is qualified, so that the manufacturing of the flaring 8 can be completed only by small equipment.

The heat exchange tubes 4 are arranged in an array or staggered arrangement or the combination of the two. According to the requirements of boiler design on the number of tubes on the convection heating surface of the boiler, the flow rate and the flow direction of flue gas are adjusted, the array flow rate is fastest, and the flow direction is a straight line; the flow speed is slow in the staggered arrangement, the flow direction is the cross flow direction, the retention time of the smoke in the smoke chamber 3 is prolonged, and the heat exchange is sufficient.

The heat exchange tubes 4 are arranged perpendicular to the flowing direction of the flue gas, and the flue gas longitudinally scours the convection tube bundles to fully utilize the heating surface, so that the heat efficiency of the boiler is improved, and the temperature and the pressure are increased quickly; and is beneficial to water circulation; the pressure bearing capacity of the smoke chamber 3 is improved. The heat exchange tube 4 can be a fin tube or a common round tube or a combination of the two.

Stove courage 2 and the equal vertical setting of smoke chamber 3, that is unanimous with vertical furnace body 1's extending direction, smoke chamber 3 sets up the one side at stove courage 2, the top and the combustor of stove courage 2 are connected, the bottom communicates with smoke chamber 3's inlet end, the setting is in the 4 level settings of heat exchange tube in smoke chamber 3, the flue gas is from bottom to top flowing, the flow direction of flue gas is perpendicular with the direction that heat exchange tube 4 arranged, it is higher to set up the height of stove courage 2 like this, can burn more fuel and produce more heats, smoke chamber 3's height is higher, the time that the flue gas dwells in smoke chamber 3 is more of a specified duration, heat exchange tube 4 that can set up are in large quantity, heat exchange efficiency is higher.

Example 2:

as shown in fig. 2-3, the furnace 2 is arranged below the smoke chamber 3, one end of the furnace 2 is connected with the burner, the other end is communicated with one side of the smoke chamber 3 far away from the burner, fuel is fully combusted in the furnace 2, smoke with heat enters the smoke chamber 3, and the heat flows upwards and more easily enters the smoke chamber 3.

Be equipped with the baffle 7 that is used for changing the flue gas flow direction in the smoke chamber 3, the center of the smoke chamber 3 that baffle 7 set up has increased the time that the flue gas dwelled in smoke chamber 3, increases heat exchange efficiency, and baffle 7 is made for heat-resisting material, and baffle 7 separates smoke chamber 3 for process space and return stroke space, and the one end of baffle 7 is equipped with opening 9 and is used for communicateing process space and return stroke space, the one end bottom and the stove courage 2 intercommunication of opening 9 are kept away from to the process space, the one end top and the chimney 5 intercommunication of opening 9 are kept away from to the return stroke space. At the moment, the flue gas enters the process space from the furnace pipe 2, then enters the return space through the opening 9, and is discharged out of the vertical furnace body 1 through the chimney 5, so that the three-return boiler is formed.

The heat exchange tubes 4 and the partition plates 7 are both vertically arranged, and because the furnace body is the vertical furnace body 1, the extension direction of the heat exchange tubes 4 is consistent with that of the vertical furnace body 1, so that higher heat exchange tubes 4 can be arranged, the volume of boiler water for heat exchange is increased, and the heat exchange efficiency is increased; the partition plate 7 is vertically arranged, the flue gas firstly enters the process space, then flows transversely, enters the return space through the opening 9, flows transversely in the reverse direction, and is discharged from the chimney 5 at the top of one end, and the flowing direction of the flue gas is vertical to the direction of the heat exchange tube 4.

Example 3:

as shown in fig. 4, the rest is the same as in embodiment 2.

The heat exchange tube 4 and the clapboard 7 are both horizontally arranged. The direction that the heat exchange tube 4 set up makes the flue gas all perpendicular with heat exchange tube 4 when rising and lateral flow, and furthest guarantees heat exchange efficiency.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.