Water-cooling furnace door of fixed refining furnace

Abstract

The utility model discloses a water-cooling furnace door of a fixed refining furnace, and belongs to the technical field of refining furnaces. The cooling device comprises a water cooling door and a cooling assembly, the water cooling door comprises a door body and a heat insulation plate, the door body comprises a frame and a fire passing plate, and the fire passing plate is arranged relative to the refining furnace and is integrally connected with one side of the frame so as to prevent the door body from cracking; the heat insulation plate is fixedly connected with the other side of the frame, and the frame, the fire passing plate and the heat insulation plate form a relatively sealed water cooling space; the cooling assembly is arranged in the water cooling space, the cooling assembly comprises a high-temperature cooling flow channel arranged along the inner wall of the frame and a low-temperature cooling flow channel surrounding the high-temperature cooling flow channel, cooling water flowing at a high speed is arranged in the high-temperature cooling flow channel, and cooling water flowing at a low speed is arranged in the low-temperature cooling flow channel. The side, close to the refining furnace, of the furnace door can be integrally formed, weld joints are eliminated, and cracking of the furnace door is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refining furnaces, in particular to a water-cooled furnace door of a fixed refining furnace. Background Art

[0002] The fixed refining furnace is a horizontal rectangular smelting space. Fuel is burned at one end of the refining furnace to fill the entire furnace with hot furnace gas. The furnace charge is heated by the radiation of furnace gas, furnace roof and furnace wall. A flue is provided at the other end of the refining furnace to discharge the furnace gas. A working door is provided on one side of the length direction of the refining furnace for charging and operation. The slag and copper melt are discharged from the slag door and copper discharge port respectively provided on the side wall or end wall of the refining furnace.

[0003] The existing fixed refining furnace doors in factories in the same industry are basically water-cooled furnace doors made of steel plates. The welds of the steel plates are prone to cracking under long-term high-temperature conditions, which causes water leakage at the welds and requires frequent maintenance; the water channel design is mostly a single inlet and outlet mode, which cannot scientifically take away heat and has low heat exchange efficiency. Utility Model Content

[0004] In view of this, it is necessary to provide a water-cooled furnace door for a fixed refining furnace to solve the problem that the existing water-cooled furnace door is easy to crack and has low heat exchange efficiency.

[0005] The utility model provides a water-cooled furnace door of a fixed refining furnace, comprising:

[0006] A water-cooled door, the water-cooled door comprises a door body and a heat insulation board, the door body comprises a frame and a fire plate, the fire plate is arranged opposite to the refining furnace and is integrally connected to one side of the frame to prevent the door body from cracking; the heat insulation board is fixedly connected to the other side of the frame, and the frame, the fire plate and the heat insulation board form a relatively sealed water-cooled space;

[0007] A cooling component is arranged in the water cooling space, and the cooling component includes a high-temperature cooling channel arranged along the inner wall of the frame and a low-temperature cooling channel arranged around the high-temperature cooling channel, wherein high-speed cooling water is provided in the high-temperature cooling channel, and low-speed cooling water is provided in the low-temperature cooling channel.

[0008] Furthermore, the door body is a cast iron door body, and the fire plate is integrally cast and connected to the frame.

[0009] Furthermore, an arched portion for enhancing strength is provided on the top of the frame, and interfaces respectively connected to the high-temperature cooling channel and the low-temperature cooling channel are provided on the arched portion.

[0010] Furthermore, a lifting ring is provided on a side of the arched portion away from the water cooling space, and the lifting ring is integrally connected to the frame.

[0011] Furthermore, the high-temperature cooling channel includes a U-shaped partition, and the U-shaped partition is arranged along the inner wall of the frame. The U-shaped partition and the inner wall of the frame are combined to form a water flow channel.

[0012] Furthermore, both ends of the U-shaped partition are respectively fixedly connected to the top of the frame, and both sides of the U-shaped partition are respectively connected to the fire board and the heat insulation board.

[0013] Furthermore, the low-temperature cooling channel includes a plurality of partition plates arranged in parallel, and two sides of the partition plates are respectively connected to the fire-passing plate and the heat insulation plate, and a tortuous water flow channel is formed between the partition plates, the U-shaped partition plates and the frame.

[0014] Furthermore, the heat insulation board is riveted or welded to the frame to provide a sealed water cooling space.

[0015] Furthermore, a heat insulation layer is provided on a side of the heat insulation board away from the refining furnace.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The utility model is a water-cooled furnace door of a fixed refining furnace, which is provided with a water-cooled door, the water-cooled door includes a door body and a heat insulation board, the door body includes a frame and a fire plate, the fire plate is arranged relative to the refining furnace and is integrally connected with one side of the frame, the fire plate directly bearing the temperature in the refining furnace is integrally connected with the frame, and the existence of welding seams can be eliminated. Under high-temperature conditions, the physical and chemical conditions of the fire plate itself remain relatively stable and it is not easy to crack.

[0018] (2) The utility model provides a water-cooled furnace door of a fixed refining furnace, which is provided with a cooling component. The cooling component is arranged in the water-cooling space. The cooling component includes a high-temperature cooling channel and a low-temperature cooling channel. The high-temperature cooling channel is arranged along the inner wall of the frame. The frame is plugged into the refining furnace and directly contacts the furnace body. The heat intensity is the greatest and the required heat dissipation efficiency is the highest. The high-temperature cooling channel is provided with high-speed flowing cooling water, which can quickly take away the heat of the frame and its vicinity, and maintain the edge temperature of the water-cooled door within a reasonable range. The low-temperature cooling channel is arranged inside the high-temperature cooling channel. The middle part of the water-cooled door is only affected by heat radiation, and the heat intensity is the lightest. The required heat dissipation efficiency is the lowest. The low-temperature cooling channel is provided with low-speed flowing cooling water, which can maintain the temperature of the middle part of the water-cooled door within a reasonable range. Different heat dissipation efficiencies are used to dissipate heat for different heated areas of the water-cooled door, thereby improving the overall heat dissipation efficiency of the water-cooled door. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the utility model as a whole. Figure 1 ;

[0022] Figure 3 This is a schematic cross-sectional view of the utility model as a whole. Figure 2 ;

[0023] In the figure, 100, water-cooled door; 110, door body; 111, frame; 111a, arched portion; 111b, interface; 111c, lifting ring; 112, fire plate; 120, heat insulation board; 200, cooling component; 210, high-temperature cooling channel; 211, U-shaped partition; 220, low-temperature cooling channel; 221, partition plate. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0025] A water-cooled furnace door of a fixed refining furnace in this embodiment relates to the technical field of refining furnaces. The furnace door is integrally formed on one side close to the refining furnace to eliminate the existence of welds and avoid cracking of the furnace door. At the same time, different cooling channels are set according to different heat intensities on the furnace door to reduce the temperature of the furnace door in a targeted manner and improve the heat dissipation efficiency of the furnace door.

[0026] See also Figures 1 to 3 In this embodiment, a water-cooled furnace door of a fixed refining furnace includes a water-cooled door 100 and a cooling component 200. The water-cooled door 100 is integrally formed on a side close to the refining furnace, thereby eliminating the existence of a weld. The cooling component 200 sets different cooling channels in the water-cooled door 100, thereby improving the heat dissipation efficiency of the furnace door.

[0027] The water-cooled door 100 includes a door body 110 and a heat insulation board 120. The door body 110 includes a frame 111 and a fire plate 112. The fire plate 112 is arranged opposite to the refining furnace and is integrally connected to one side of the frame 111. The fire plate 112 directly bearing the temperature in the refining furnace is integrally connected to the frame 111, which can eliminate the existence of welding seams. Under high-temperature conditions, the physical and chemical conditions of the fire plate 112 itself remain relatively stable and are not prone to cracks.

[0028] The heat insulation plate 120 is fixedly connected to the other side of the frame 111. The frame 111, the fire plate 112 and the heat insulation plate 120 form a relatively sealed water-cooling space. The water-cooling space with cooling water flowing in can cool the water-cooled door 100 as a whole to prevent the temperature of the water-cooled door 100 from being too high.

[0029] The cooling component 200 is arranged in the water cooling space. The cooling component 200 includes a high-temperature cooling channel 210 and a low-temperature cooling channel 220. The high-temperature cooling channel 210 is arranged along the inner wall of the frame 111. The frame 111 is plugged into the refining furnace and directly contacts the furnace body. The heat intensity is the greatest and the required heat dissipation efficiency is the highest. The high-temperature cooling channel 210 is provided with high-speed flowing cooling water, which can quickly take away the heat of the frame 111 and its vicinity, and maintain the edge temperature of the water-cooled door 100 within a reasonable range. The low-temperature cooling channel 220 is enclosed in the high-temperature cooling channel 210. The middle part of the water-cooled door 100 is only affected by heat radiation, and the heat intensity is the lightest, and the required heat dissipation efficiency is the lowest. The low-temperature cooling channel 220 is provided with low-speed flowing cooling water, which can maintain the temperature of the middle part of the water-cooled door 100 within a reasonable range. Different heat dissipation efficiencies are used to dissipate heat for different heated areas of the water-cooled door 100, thereby improving the overall heat dissipation efficiency of the water-cooled door 100.

[0030] In some embodiments, see Figure 3 The door body 110 is a cast iron door body 110, and the fire plate 112 and the frame 111 are integrally cast. The fire plate 112 and the frame 111 are cast once with cast iron as the raw material. The cast iron material can be HT250. The cast iron door body 110 eliminates the weld seam. The fire plate 112 maintains relatively stable physical and chemical properties under high heat conditions and is not prone to cracks. Cast iron has good thermal conductivity and can transfer its own heat to the cooling component 200 in contact with the door body 110 to control the temperature of the door body 110 and prevent the door body 110 from being damaged and destroyed due to its own high temperature.

[0031] In some embodiments, see Figure 2, an arched portion 111a is provided at the top of the frame 111. The frame 111 as a whole is composed of four side edges. The side edge at the top is arched as a whole as the arched portion 111a. The arched portion 111a can strengthen the overall strength of the frame 111 and reasonably share the overall force of the frame 111. In a further embodiment, the arched portion 111a is provided with an interface 111b respectively connected to the high-temperature cooling channel 210 and the low-temperature cooling channel 220. All interfaces 111b are vertically arranged and fixedly connected to the arched portion 111a. Two interfaces 111b are respectively connected to the two ends of the high-temperature cooling channel 210, and the other two interfaces 111b are respectively connected to the two ends of the low-temperature cooling channel 220. When casting the frame 111, a notch can be reserved in advance in the part of the arched portion 111a. Alternatively, the frame 111 can be drilled later. A stainless steel quick connector is installed on the interface 111b.

[0032] In the specific implementation process, a lifting ring 111c is provided on the side of the arched part 111a away from the water cooling space, and the lifting ring 111c is integrally connected with the frame 111, and the lifting ring 111c is integrally connected with the top of the arched part 111a, and the lifting ring 111c can relatively evenly transfer the force to the arched part 111a, and the arched part 111a can cooperate with the lifting ring 111c to improve the overall tensile strength of the frame 111. During use, the lifting ring 111c is connected to the lifting equipment, and the water-cooled door 100 can be lifted as a whole to realize the opening and closing of the refining furnace.

[0033] In some embodiments, see Figure 2 The high-temperature cooling channel 210 includes a U-shaped partition 211, which is arranged along the inner wall of the frame 111. The U-shaped partition 211 and the inner wall of the frame 111 are combined to form a water flow channel. The water flow channel flows along the outer frame of the frame 111 that contacts the refining furnace, which can absorb excess heat. The water flow speed of the water flow channel of the high-temperature cooling channel 210 is faster and the cooling effect is better. The high-temperature area of ​​the water-cooled door 100 can be cooled at a fixed point to ensure the high-temperature stability of the water-cooled door 100.

[0034] In the further implementation process, the two ends of the U-shaped partition 211 are respectively connected to the arched portion 111a of the frame 111, and the two sides of the U-shaped partition 211 are respectively connected to the fire plate 112 and the heat insulation plate 120. The U-shaped partition 211, the fire plate 112, the heat insulation plate 120 and the frame 111 cooperate with each other to form a water flow channel. The cooling water flowing through the water flow channel can drive the heat from the fire plate 112 to ensure that the water-cooled door 100 will not overheat.

[0035] In some embodiments, see Figure 2The low-temperature cooling channel 220 includes a plurality of partition plates 221 arranged in parallel, and the two sides of the partition plates 221 are respectively connected to the fire plate 112 and the heat insulation plate 120, and the ends of the partition plates 221 are connected to the arched portion 111a of the frame 111 or the U-shaped partition plate 211. In the water-cooled space, a tortuous water flow channel is formed between the partition plates 221, the U-shaped partition plates 211 and the frame 111. Compared with the part in contact with the frame 111, the middle part of the water-cooled door 100 receives less heat and has a lower temperature. In the corresponding water flow channel, the flow speed of the cooling water is relatively slow, and lower energy consumption can be used to achieve the purpose of cooling the corresponding area of ​​the water-cooled door 100.

[0036] In some embodiments, see Figure 1 and Figure 2 The heat insulation board 120 is riveted or welded to the frame 111. Compared with the fire board 112, the heat insulation board 120 does not directly contact the fire of the refining furnace. The two sides of the heat insulation board 120 are in contact with the air and cooling water respectively. The temperature of the heat insulation board 120 is relatively low, and it can be directly connected to the frame 111 by riveting or welding. It is only necessary to ensure that the heat insulation board 120 and the frame 111 maintain good sealing to avoid leakage of cooling water. In the specific implementation process, the U-shaped partition 211 and the partition plate 221 can be welded to the heat insulation board 120 or kept in contact. A small amount of cooling water leakage in different flow channels will not have a significant negative impact on the system.

[0037] It should be noted that the heat insulation board 120 and the U-shaped partition board 211 can be integrally cast with the frame 111 and the fire plate 112 when the door body 110 is cast, or can be formed by welding later.

[0038] At the same time, the frame 111 and the fire plate 112 made of gray cast iron can be welded using a welding rod labeled CMC-MS64N, which has good welding strength and high plasticity.

[0039] It should be noted that the heat insulation board 120 is arranged on the side away from the refining furnace facing the operator. Providing a heat insulation layer on the heat insulation board 120 whose temperature generally does not exceed 100 degrees can reduce the risk of burns to personnel.

[0040] Working process: First, the frame 111 and the fire plate 112 of the water-cooled door 100 are cast at one time using HT250 gray cast iron, and the heat insulation plate 120 is welded or riveted to the other side of the frame 111 to form a water-cooled space. The high-temperature cooling channel and the low-temperature cooling channel are both arranged in the water-cooled space. Different heat dissipation efficiencies are used to dissipate heat for different heated areas of the water-cooled door 100, thereby improving the overall heat dissipation efficiency of the water-cooled door 100.

[0041] The above description is only a preferred specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be covered by the present invention.

Claims

1. A water-cooled furnace door for a fixed refining furnace, characterized in that: include: A water-cooled door, the water-cooled door comprises a door body and a heat insulation board, the door body comprises a frame and a fire plate, the fire plate is arranged opposite to the refining furnace and is integrally connected to one side of the frame to prevent the door body from cracking; the heat insulation board is fixedly connected to the other side of the frame, and the frame, the fire plate and the heat insulation board form a relatively sealed water-cooled space; A cooling component is arranged in the water cooling space, and the cooling component includes a high-temperature cooling channel arranged along the inner wall of the frame and a low-temperature cooling channel arranged around the high-temperature cooling channel, wherein high-speed cooling water is provided in the high-temperature cooling channel, and low-speed cooling water is provided in the low-temperature cooling channel.

2. The water-cooled furnace door of a fixed refining furnace according to claim 1, characterized in that: The door body is a cast iron door body, and the fire plate is integrally cast and connected to the frame.

3. The water-cooled furnace door of a fixed refining furnace according to claim 1, characterized in that: The top of the frame is provided with an arched portion for enhancing strength, and the arched portion is provided with interfaces respectively connected with the high-temperature cooling channel and the low-temperature cooling channel.

4. The water-cooled furnace door of a fixed refining furnace according to claim 3, characterized in that: A hanging ring is provided on one side of the arched portion away from the water cooling space, and the hanging ring is integrally connected to the frame.

5. The water-cooled furnace door of a fixed refining furnace according to claim 1, characterized in that: The high-temperature cooling channel comprises a U-shaped partition, which is arranged along the inner wall of the frame. The U-shaped partition and the inner wall of the frame are combined to form a water flow channel.

6. The water-cooled furnace door of a stationary refining furnace according to claim 5, characterized in that: The two ends of the U-shaped partition are respectively fixedly connected to the top of the frame, and the two sides of the U-shaped partition are respectively connected to the fire-passing plate and the heat insulation plate.

7. The water-cooled furnace door of a stationary refining furnace according to claim 6, characterized in that: The low-temperature cooling channel includes a plurality of partition plates arranged in parallel, and two sides of the partition plates are respectively connected to the fire-passing plate and the heat-insulating plate, and a tortuous water flow channel is formed between the partition plates, the U-shaped partition plates and the frame.

8. The water-cooled furnace door of a stationary refining furnace according to claim 1, characterized in that: The heat insulation board is riveted or welded to the frame to seal the water cooling space.

9. The water-cooled furnace door of a stationary refining furnace according to claim 8, characterized in that: A heat insulation layer is provided on a side of the heat insulation board away from the refining furnace.

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