Furnace cap of vertical multi-fuel combustion furnace and vertical multi-fuel combustion furnace

Abstract

The utility model relates to the technical field of multi-fuel combustion furnace protection, in particular to a vertical multi-fuel combustion furnace cap and a vertical multi-fuel combustion furnace, which comprise a furnace cap main body, the furnace cap main body consists of a cylindrical top section and a conical bottom section, and the conical bottom section is sleeved on the upper section of the vertical multi-fuel combustion furnace to fix the furnace cap main body; the water cooling system is externally arranged around the conical bottom section of the furnace cap main body and is used for cooling the furnace cap main body; and the blast inlet is formed in the side wall of the cylindrical top section and is used for blowing combustion-supporting air. The vertical multi-fuel combustion furnace has the advantages that the conical bottom section enables the vertical multi-fuel combustion furnace shell to be far away from a combustion flame high-temperature area, and the working condition environment of the top of the vertical multi-fuel combustion furnace is improved; a water cooling system is designed on the periphery of the conical bottom section, and active cooling can be achieved; and thirdly, the furnace cap is designed to be of a detachable structure, so that the furnace cap is convenient to replace, and the service life of the vertical multi-fuel combustion furnace can be greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mixed-firing furnace protection, in particular to a furnace cap of a vertical mixed-firing furnace and a vertical mixed-firing furnace. Background Art

[0002] A mixed-firing furnace is a furnace that provides a combustion environment for a single or multiple fuels and generates hot air. It is mainly available in two types: horizontal and vertical. It is widely used in industrial production. In existing vertical mixed-firing furnaces, the top and the cone section of the furnace body connected to the top are frequently deformed at high temperatures in the corresponding areas due to high heat loads, and the refractory lining falls off or even burns through and burns out, causing serious safety hazards in production. Therefore, it is necessary to optimize the top structure of the vertical mixed-firing furnace to extend the service life of the mixed-firing furnace and reduce safety hazards in production. Utility Model Content

[0003] In order to extend the service life of the mixed-firing furnace and reduce safety hazards in production, in the first aspect of the utility model, a furnace cap of a vertical mixed-firing furnace is designed as a detachable furnace top of the vertical mixed-firing furnace, wherein the structure of the furnace cap of the vertical mixed-firing furnace includes: a furnace cap body, the furnace cap body is composed of a cylindrical top section and a conical bottom section, the conical bottom section is sleeved on the upper section of the vertical mixed-firing furnace to fix the furnace cap body; a water cooling system, the water cooling system is externally arranged around the conical bottom section of the furnace cap body, for cooling the furnace cap body; an air blast inlet, arranged on the side wall of the cylindrical top section, for blasting combustion-supporting air.

[0004] In one or more embodiments, the cylindrical top section of the furnace cap body is a double-layer structure, and a plurality of staggered segmented partitions are radially spaced between the outer wall and the inner wall to form a spiral air duct; a cold air inlet is provided on the side wall of the cylindrical top section, and a cold air outlet is provided on the bottom end, the cold air inlet and the cold air outlet are connected by the spiral air duct, and the cold air outlet is connected to the cavity formed by the conical bottom section.

[0005] In one or more embodiments, the furnace cap of the vertical mixed-firing furnace of the utility model further includes: a damper arranged at the cold air inlet, for adjusting the air intake volume by adjusting the damper opening.

[0006] In one or more embodiments, the furnace cap of the vertical mixed-firing furnace of the utility model also includes: a plurality of reinforcing support rings, and the plurality of reinforcing support rings include at least: a first reinforcing support ring arranged at the bottom end of the cylindrical top section, a second reinforcing support ring arranged near the first reinforcing support ring, and a third reinforcing support ring arranged at the middle section of the cylindrical top section; wherein, the first reinforcing support ring is fixedly connected to the inner wall of the bottom end of the cylindrical top section by oblique tensioning rods, and the second reinforcing support ring and the third reinforcing support ring are respectively fixedly connected to the inner wall of the cylindrical top section.

[0007] In one or more embodiments, the second reinforcing support ring is arranged at a distance of 100 to 400 mm from the first reinforcing support ring; and the third reinforcing support ring is arranged at a distance of 100 to 300 mm from the vicinity of the blast inlet.

[0008] In one or more embodiments, the width of the first reinforcement support ring, the second reinforcement support ring and the third reinforcement support ring ranges from 50 to 100 mm.

[0009] In one or more embodiments, the inner wall of the cylindrical top section of the furnace cap body, the inner wall of the conical bottom section, and the plurality of reinforcing support rings are all made of high temperature resistant materials.

[0010] In one or more embodiments, the water cooling system includes: an open water tank externally arranged around the conical bottom section of the furnace cap body; a water level monitoring subsystem, arranged inside the open water tank, for monitoring the water level; a water replenishment subsystem, controlled by the water level monitoring subsystem, for automatically replenishing water into the open water tank when the water level is lower than a preset height.

[0011] In one or more embodiments, the cylindrical top section and the conical bottom section of the furnace cap body are of detachable design, and the cylindrical top section and the conical bottom section are detachably connected via a flange.

[0012] In a second aspect of the present invention, a vertical mixed-firing furnace is designed, including a furnace cap structure of a vertical mixed-firing furnace as described in any of the above embodiments.

[0013] The beneficial effects of the utility model include:

[0014] 1. The furnace cap design of the utility model realizes triple protection for the vertical furnace. First, the conical bottom section keeps the shell of the vertical mixed-firing furnace away from the high-temperature area of ​​the combustion flame, thereby improving the working environment of the upper part of the vertical mixed-firing furnace. Second, a water cooling system is designed on the periphery of the conical bottom section, which can realize active cooling. Third, an air cooling channel is designed between the inner wall and the outer shell of the columnar top section, which can realize further cooling of the columnar top section. The air cooling channel is designed to be spiral, which can realize sufficient heat exchange and thus ensure the air cooling effect.

[0015] 2. Strengthening the support ring can enhance the structural stability of the furnace cap at high temperatures and avoid problems such as furnace cap deformation and refractory material peeling;

[0016] 3. The combustion-supporting air entering through the blast inlet not only cools down the upper section of the furnace cap, but also undergoes a primary preheating process, which can improve combustion efficiency and save energy;

[0017] 4. The furnace cap design of the utility model can extend the service life of the vertical mixed-firing furnace by 2.5 times, greatly saving the maintenance and replacement costs of the vertical furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of a furnace cap of a vertical mixed-firing furnace according to an embodiment of the utility model.

[0020] The meanings of the reference numerals in the above drawings are as follows:

[0021] 100. furnace cap body; 110. cylindrical top section; 120. conical bottom section; 111. blast inlet; 112. cold air inlet; 113. cold air outlet; 200. water cooling system; 201. water tank; 202. water level monitoring subsystem; 203. water replenishment subsystem; 301. first reinforcing support ring; 302. second reinforcing support ring; 303. third reinforcing support ring. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0023] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0024] In order to increase the service life of the vertical mixed-firing furnace and reduce safety hazards, the utility model proposes a furnace cap design for the vertical mixed-firing furnace, such as Figure 1 As shown, it includes: a furnace cap body 100, which is composed of a cylindrical top section 110 and a conical bottom section 120, and the conical bottom section 120 is sleeved on the top section of the vertical mixed-firing furnace to fix the furnace cap body 100; a water cooling system 200, which is externally arranged around the conical bottom section 120 of the furnace cap body and is used to cool the furnace cap body 100; and an air blast inlet 111, which is arranged on the side wall of the cylindrical top section 110 and is used to blast in combustion-supporting air.

[0025] Specifically, in this embodiment, the top of the vertical mixed-firing furnace is designed to be a detachable structure. Specifically, a detachable vertical mixed-firing furnace cap (hereinafter referred to as the furnace cap) is designed as the top of the vertical mixed-firing furnace, which not only facilitates the replacement of the top of the vertical mixed-firing furnace, but the furnace cap itself also has a cooling system, which can greatly extend the service life of the furnace cap and thus extend the service life of the vertical mixed-firing furnace, and reduce production hazards and reduce the maintenance and replacement costs of the vertical mixed-firing furnace. Among them, the conical bottom section 120 keeps the shell of the vertical mixed-firing furnace away from the high-temperature area of ​​the combustion flame, which helps to improve the upper working environment of the vertical mixed-firing furnace. In an optional embodiment, the top of the cylindrical top section 110 of the furnace cap is also provided with a fuel inlet for adding liquid fuel and / or gas fuel into the vertical mixed-firing furnace; when the fuel is solid, it can be added without the furnace cap.

[0026] In one embodiment, in order to further enhance the cooling effect, the cylindrical top section 110 of the furnace cap body is designed as a double-layer structure in this embodiment. Specifically, a plurality of staggered segmented partitions are radially spaced between the outer wall and the inner wall of the cylindrical top section 110 to form a spiral air duct (not shown), and a cold air inlet 112 is provided on the side wall of the cylindrical top section 110, and a cold air outlet 113 is provided on the bottom end of the cylindrical top section. The cold air inlet 112 and the cold air outlet 113 are connected by a spiral air duct, and the cold air outlet 113 is connected to the cavity formed by the conical bottom section.

[0027] Specifically, in this embodiment, the cylindrical top section 110 of the furnace cap body is designed as an air-cooled structure, which, combined with the water cooling system 200 designed thereunder, can achieve secondary cooling, thereby further extending the service life of the furnace cap or the vertical mixed-firing furnace; and, since the cold air outlet is connected to the cavity formed by the conical bottom section, it can form an insulating layer on the top of the conical bottom section, thereby preventing the flame from directly burning the top of the conical bottom section.

[0028] In one embodiment, the furnace cap of the mixed-firing furnace of the present invention further includes a damper (not shown) disposed at the cold air inlet 112, which is used to adjust the air intake volume by adjusting the damper opening to adjust the air cooling effect.

[0029] Specifically, by setting a damper at the cold air inlet 112, the air intake volume can be adjusted, thereby adjusting the air cooling effect, and when gas fuel and / or liquid fuel needs to be delivered from the top of the furnace cap, the air cooling structure design can also adjust the preheating temperature of the fuel.

[0030] In one embodiment, the furnace cap of the mixed-firing furnace of the utility model also includes: multiple reinforcing support rings, and the multiple reinforcing support rings at least include: a first reinforcing support ring 301 arranged at the bottom end of the cylindrical top section, a second reinforcing support ring 302 arranged near the first reinforcing support ring, and a third reinforcing support ring 303 arranged in the middle section of the cylindrical top section; wherein the first reinforcing support ring 301 is fixedly connected to the inner wall of the bottom end of the cylindrical top section by oblique tensioning rods, and the second reinforcing support ring 302 and the third reinforcing support ring 303 are respectively fixedly connected to the inner wall of the cylindrical top section.

[0031] Specifically, the bottom end of the cylindrical top section 110 is the area where the heat of combustion is concentrated, and therefore it is necessary to design a first reinforcing support ring 301 and a second reinforcing support ring 302 at the bottom end of the cylindrical top section 110 and its vicinity to prevent deformation; the third reinforcing support ring 303 is arranged in the middle section of the cylindrical top section to prevent the cylindrical top section 110 from being deformed as a whole.

[0032] In an optional example, the second reinforcing support ring 302 is arranged 100-400 mm away from the first reinforcing support ring 301; the third reinforcing support ring 303 is arranged 100-300 mm near the blast inlet. The area near the blast inlet is a hot and cold alternating area, so the third reinforcing support ring 303 needs to be arranged for reinforcement.

[0033] In an optional embodiment, the width of the first reinforcement ring 301 , the second reinforcement ring 302 and the third reinforcement ring 303 ranges from 50 to 100 mm.

[0034] In an optional embodiment, the inner wall of the cylindrical top section 110 of the furnace cap body, the inner wall of the conical bottom section 120 and multiple reinforcing rings are all made of high temperature resistant materials, such as 20g, 316L, 310S and other materials.

[0035] In one embodiment, the water cooling system 200 includes: an open water tank 201 disposed on the conical bottom section of the external surrounding furnace cap body; a water level monitoring subsystem 202, disposed inside the open water tank, for monitoring the water level; a water replenishment subsystem 203, controlled by the water level monitoring subsystem, for automatically replenishing water into the open water tank when the water level is lower than a preset height.

[0036] In an optional embodiment, the water tank 201 adopts a closed design, and the hot water inside the water tank 201 flows back into the water tank 201 via a heat dissipation device.

[0037] In one embodiment, in order to facilitate transportation and installation, the cylindrical top section 110 and the conical bottom section 120 of the furnace cap body are designed to be detachable, and the cylindrical top section 110 and the conical bottom section 120 are detachably connected via a flange.

[0038] In combination with the above embodiments, the vertical mixed-firing furnace cap design of the utility model has the following beneficial effects:

[0039] 1. The furnace cap design of the utility model realizes triple protection for the vertical furnace. First, the conical bottom section keeps the shell of the vertical mixed-firing furnace away from the high-temperature area of ​​the combustion flame, thereby improving the working environment of the upper part of the vertical mixed-firing furnace. Second, a water cooling system is designed on the periphery of the conical bottom section, which can realize active cooling. Third, an air cooling channel is designed between the inner wall and the outer shell of the columnar top section, which can realize further cooling of the columnar top section. The air cooling channel is designed to be spiral, which can realize sufficient heat exchange and thus ensure the air cooling effect.

[0040] 2. Strengthening the support ring can enhance the structural stability of the furnace cap at high temperatures and avoid problems such as furnace cap deformation and refractory material peeling;

[0041] 3. The combustion-supporting air entering through the blast inlet not only cools down the upper section of the furnace cap, but also undergoes a primary preheating process, which can improve combustion efficiency and save energy;

[0042] 4. The furnace cap design of the utility model can extend the service life of the vertical mixed-firing furnace by 2.5 times, greatly saving the maintenance and replacement costs of the vertical furnace.

[0043] In the second aspect of the utility model, a vertical mixed-firing furnace is also proposed. The main body of the vertical mixed-firing furnace adopts a top opening design, and uses a vertical mixed-firing furnace cap of any of the above embodiments of the utility model as the furnace top.

[0044] The vertical mixed-firing furnace adopting the furnace cap design of the utility model can extend the service time by 2.5 times, thereby greatly saving the maintenance and replacement costs of the vertical furnace.

[0045] The above are exemplary embodiments disclosed by the present utility model, but it should be noted that various changes and modifications can be made without departing from the scope of the present utility model disclosed by the claims. The functions, steps and / or actions of the method claims according to the disclosed embodiments described herein do not need to be performed in any particular order.

[0046] It should be understood that, as used herein, the singular forms "a", "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations including one or more of the associated listed items.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in detail for the sake of simplicity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the embodiments of the present invention.

Claims

1. A vertical mixed-firing furnace cap, characterized in that: include: A furnace cap body, the furnace cap body is composed of a cylindrical top section and a conical bottom section, and the conical bottom section is sleeved on the upper section of the vertical mixed-firing furnace to fix the furnace cap body; A water cooling system, the water cooling system is externally arranged around the conical bottom section of the furnace cap body, and is used to cool the furnace cap body; The blast inlet is arranged on the side wall of the cylindrical top section and is used for blasting in combustion-supporting air.

2. The vertical mixed-firing furnace cap according to claim 1, characterized in that: The cylindrical top section of the furnace cap body is a double-layer structure, and a plurality of staggered segmented partitions are arranged radially between the outer wall and the inner wall to form a spiral air duct; A cold air inlet is arranged on the side wall of the cylindrical top section, and a cold air outlet is arranged on the bottom end. The cold air inlet and the cold air outlet are connected by the spiral air duct, and the cold air outlet is connected to the cavity formed by the conical bottom section.

3. The vertical mixed-firing furnace cap according to claim 2, characterized in that: Also includes: The damper provided at the cold air inlet is used to adjust the air intake volume by adjusting the damper opening.

4. The vertical mixed-firing furnace cap according to claim 2, characterized in that: Also includes: A plurality of reinforcing support rings, wherein the plurality of reinforcing support rings at least comprises: A first reinforcing support ring disposed at the bottom end of the cylindrical top section, a second reinforcing support ring disposed near the first reinforcing support ring, and a third reinforcing support ring disposed at the middle section of the cylindrical top section; Wherein, the first reinforcing support ring is fixedly connected to the inner wall of the bottom end of the cylindrical top section through oblique tie bars, and the second reinforcing support ring and the third reinforcing support ring are fixedly connected to the inner wall of the cylindrical top section respectively.

5. The vertical mixed-firing furnace cap according to claim 4, characterized in that: The second reinforcement ring is arranged at a distance of 100 to 400 mm from the first reinforcement ring; The third reinforcing support ring is arranged at 100 to 300 mm near the blast inlet.

6. The vertical mixed-firing furnace cap according to claim 4, characterized in that: The width of the first reinforcement support ring, the second reinforcement support ring and the third reinforcement support ring ranges from 50 to 100 mm.

7. The vertical mixed-firing furnace cap according to claim 4, characterized in that: The inner wall of the cylindrical top section of the furnace cap body, the inner wall of the conical bottom section and the multiple reinforcing support rings are all made of high-temperature resistant materials.

8. The vertical mixed-firing furnace cap according to claim 1, characterized in that: The water cooling system comprises: An open water tank is externally arranged around the conical bottom section of the furnace cap body; A water level monitoring subsystem, disposed inside the open water tank, for monitoring the water level; The water replenishment subsystem is controlled by the water level monitoring subsystem and is used to automatically replenish water into the open water tank when the water level is lower than a preset height.

9. The vertical mixed-firing furnace cap according to claim 1, characterized in that: The cylindrical top section and the conical bottom section of the furnace cap body are designed to be detachable, and the cylindrical top section and the conical bottom section are detachably connected via a flange.

10. A vertical mixed-firing furnace, characterized in that: It comprises a furnace cap of a vertical mixed-firing furnace as described in any one of claims 1 to 9.

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