A cooling system for a reduction furnace bottom pan

Abstract

The utility model provides a kind of cooling system of reduction furnace bottom disc, and the purpose is to solve the technical problems that the cooling flow channel structure of existing reduction furnace bottom disc is complex, and the different regions of bottom disc produce the difference of flow velocity and cooling capacity.The cooling system comprises: base, it is located at the bottom of reduction furnace, and the upper cavity and lower cavity are in base;Upper layer board group, it is located in upper cavity, and separates upper layer flow channel in upper cavity;Lower layer board group, it is located in lower cavity, and separates lower layer flow channel in lower cavity;Water inlet pipe, its water outlet is communicated with lower layer flow channel, and close to the edge of base;Water outlet pipe, its water inlet is communicated with upper layer flow channel, and close to the middle of base;Multiple connecting pipes, the two ends of connecting pipe are respectively communicated with lower cavity and upper cavity, all connecting pipes are distributed on the circumference of base, and close to the edge of base.Connecting pipe is used to communicate upper layer flow channel and lower layer flow channel, with the advantage of being able to cool evenly.

Description

Technical Field

[0001] This utility model relates to the field of cooling technology, and specifically to a cooling system for a reduction furnace chassis. Background Technology

[0002] The reduction furnace is an indispensable core piece of equipment in the polysilicon production process, generating a large amount of heat during its operation. The cooling system of the furnace chassis is therefore a critical component. Insufficient cooling can lead to localized high-temperature damage, deformation, bulging, cracking, or even rupture of the chassis, resulting in instability in the production process.

[0003] Existing chassis cooling systems have complex cooling channel structures, and the flow path inevitably causes differences in the flow rate and cooling capacity of the chassis cooling water in different areas. This results in insufficient cooling at the end of the channel, leading to prolonged high temperatures, increased thermal stress accumulation, and a tendency for localized deformation of the equipment. Furthermore, the chassis metal composite plate material may overheat or even crack and be damaged, reducing the overall safety and service life of the equipment. Utility Model Content

[0004] To address the technical problem that the complex cooling channel structure of existing reduction furnace chassis causes differences in flow velocity and cooling capacity in different areas of the chassis, this utility model provides a cooling system for the reduction furnace chassis. The system isolates upper and lower flow channels in the upper and lower cavities respectively through upper and lower plate assemblies, and then connects the upper and lower flow channels with connecting pipes, which has the advantage of enabling uniform cooling.

[0005] The technical solution of this utility model is:

[0006] A cooling system for a reduction furnace chassis, comprising:

[0007] A base is located at the bottom of the reduction furnace, and the base has an upper cavity and a lower cavity.

[0008] An upper plate assembly is disposed within the upper cavity, and an upper flow channel is separated within the upper cavity;

[0009] The lower plate assembly is located in the lower cavity and a lower flow channel is separated in the lower cavity;

[0010] The water inlet pipe has its outlet connected to the lower flow channel and is located near the edge of the base;

[0011] The water outlet pipe has its inlet connected to the upper flow channel and is located near the middle of the base;

[0012] Multiple connecting pipes are provided, with their two ends connected to the lower cavity and the upper cavity, respectively. All the connecting pipes are distributed around the circumference of the base and are close to the edge of the base.

[0013] Optionally, the upper flow channel has a spiral structure, and the fluid flows from the edge of the base towards the center.

[0014] Optionally, the upper flow channel has two channels, both of which are spiral structures.

[0015] Optionally, the edges of the two upper flow channels are respectively connected to multiple connecting pipes, and the fluid flow direction in the two upper flow channels is consistent.

[0016] Optionally, the upper plate assembly includes two spiral baffles, which are symmetrically distributed in the upper cavity, and the gap between the two spiral baffles forms the upper flow channel.

[0017] Optionally, the lower flow channel has an S-shaped structure.

[0018] Optionally, the lower flow channel has two channels, which are symmetrically distributed within the lower cavity.

[0019] Optionally, an inlet channel is provided between the two lower flow channels;

[0020] One end of the inlet channel is located at the edge of the base and is connected to the water inlet pipe;

[0021] The other end of the inlet channel is connected to the middle of the lower flow channel.

[0022] Optionally, the lower cavity is provided with two parallel straight baffles spaced apart, and the gap between the two straight baffles forms the entrance channel.

[0023] Optionally, the lower layer assembly includes:

[0024] A small arc plate is located in the middle of the lower cavity;

[0025] Two intermediate arc plates are symmetrically arranged in the lower cavity and located outside the small arc plate;

[0026] A large arc plate is disposed within the lower cavity, located outside the middle arc plate;

[0027] The central angles of the small arc plate and the large arc plate are both greater than 200°, the central angle of the middle arc plate is less than 180°, and the gaps between each pair of the small arc plate, the middle arc plate and the large arc plate constitute the lower flow channel.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] An upper cavity and a lower cavity are set inside the base, both filled with cooling water to cool the base. Upper and lower plate assemblies isolate upper and lower flow channels within the upper and lower cavities, respectively, which are then connected by a connecting pipe. By strategically placing the inlet, outlet, and connecting pipes, the cooling water in the lower cavity flows from the center to the edge of the base, while the cooling water in the upper cavity flows from the edge to the center, thus achieving uniform cooling. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of the lower flow channel;

[0032] Figure 2 This is a top view of the lower flow channel structure.

[0033] Figure 3 This is a schematic diagram of the three-dimensional structure of the upper flow channel;

[0034] Figure 4 This is a top view of the upper flow channel structure.

[0035] Figure 5 This is a schematic diagram of the cross-sectional structure of the connecting pipe. Detailed Implementation

[0036] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0037] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0038] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0039] Example:

[0040] See Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment discloses a cooling system for a reduction furnace chassis, including a base 10, an upper plate assembly 20, a lower plate assembly 30, a water inlet pipe 40, a water outlet pipe 50, and a connecting pipe 60. The base 10 has an upper cavity 11 and a lower cavity 12. The upper plate assembly 20 is disposed in the upper cavity 11, and the lower plate assembly 30 is disposed in the lower cavity 12. The water inlet pipe 40 is connected to the lower cavity 12, the water outlet pipe 50 is connected to the upper cavity 11, and the connecting pipe 60 is connected between the upper cavity 11 and the lower cavity 12.

[0041] Specifically, the upper cavity 11 and the lower cavity 12 are isolated from each other. The top of the upper cavity 11 is the bottom of the reduction furnace, and the upper plate group 20 forms the upper flow channel 21 in the upper cavity 11.

[0042] The lower cavity 12 is located below the upper cavity 11, and the lower plate assembly 30 forms a lower flow channel 31 within the lower cavity 12.

[0043] The outlet of the water inlet pipe 40 is connected to the lower flow channel 31, and the installation position of the water inlet pipe 40 is close to the edge of the base 10. A flow channel is provided in the lower cavity 12 to guide the cooling water input by the water inlet pipe 40 to the middle of the lower cavity 12.

[0044] The inlet of the water outlet pipe 50 is connected to the upper flow channel 21, and the water outlet pipe 50 is located in the middle of the base 10.

[0045] There are multiple connecting tubes 60, all distributed around the base 10, and the two ends of the connecting tubes 60 are connected to the upper cavity 11 and the lower cavity 12 respectively.

[0046] Cooling water entering the lower cavity 12 through the inlet pipe 40 is guided to the middle, then flows to the edge of the lower cavity 12, and enters the edge of the upper cavity 11 through the connecting pipe 60. It then flows from the edge to the middle in the upper cavity 11 and is finally discharged from the outlet pipe 50.

[0047] In this embodiment, an upper cavity 11 and a lower cavity 12 are provided within the base 10. Both the upper cavity 11 and the lower cavity 12 are filled with cooling water to cool the base 10. An upper flow channel 21 and a lower flow channel 31 are respectively separated within the upper cavity 11 and the lower cavity 12 by an upper plate assembly 20 and a lower plate assembly 30, respectively. Then, a connecting pipe 60 connects the upper flow channel 21 and the lower flow channel 31. By setting the positions of the inlet pipe 40, the outlet pipe 50, and the connecting pipe 60, the cooling water in the lower cavity 12 flows from the center to the edge of the base 10, and the cooling water in the upper cavity 11 flows from the edge to the center of the base 10, thereby achieving uniform cooling.

[0048] In one specific embodiment:

[0049] The upper flow channel 21 has a spiral structure, and the cooling water flows from the edge of the spiral structure to the middle in the upper flow channel 21, and then is discharged from the outlet pipe 50.

[0050] Preferably, there are two upper flow channels 21, and the cooling water flows in the same direction within the two upper flow channels 21. The two upper flow channels 21 are also symmetrically distributed. By providing two upper flow channels 21, the cooling water can be distributed to the base 10 of the reduction furnace for uniform cooling. Generally, the edges of the two upper flow channels 21 are connected to multiple equal numbers of connecting pipes 60, thereby ensuring the even distribution of cooling water from the lower flow channel 31.

[0051] Specifically, the upper plate assembly 20 includes two spiral baffles 22, which are symmetrically distributed in the upper cavity 11. The outer ends of the two spiral baffles 22 are respectively connected to the inner walls on both sides of the base 10, and the inner ends of the two spiral baffles 22 are respectively located on both sides of the water outlet pipe 50. The gap between the two spiral baffles 22 forms two upper flow channels 21.

[0052] By setting the upper flow channel 21 as a spiral structure, the cooling effect can be effectively improved.

[0053] In another specific embodiment:

[0054] The lower flow channel 31 has an S-shaped structure, and there are two lower flow channels 31, which are symmetrically distributed inside the lower cavity 12. There is an inlet channel 32 between the two lower flow channels 31. One end of the inlet channel 32 is located at the edge of the base 10 and is connected to the outlet of the water inlet pipe 40. The other end of the inlet channel 32 is connected to the middle of the lower flow channel 31.

[0055] In this embodiment, by setting the lower flow channel 31 to an S-shaped structure, the cooling water in the lower cavity 12 can be divided into two parts, which can then cool both sides of the reduction furnace base 10 respectively. By providing the inlet channel 32, the cooling water entering from the edge can be diverted to the center.

[0056] Preferably, the lower cavity 12 is provided with two parallel straight baffles 33 with a gap between them, and the gap between the two straight baffles 33 forms the entrance channel 32.

[0057] In another preferred embodiment, the lower plate assembly 30 includes a small arc plate 34, a medium arc plate 35, and a large arc plate 36. The small arc plate 34 has an arc-shaped structure and is located in the middle of the lower cavity 12. Two straight baffles 33 pass through the opening side of the small arc plate 34, thereby allowing cooling water to smoothly enter the interior of the small arc plate 34.

[0058] Two intermediate arc plates 35 are respectively disposed on both sides of the smaller arc plate 34. The two intermediate arc plates 35 and the smaller arc plate 34 are coaxially arranged, and there is a gap between the two intermediate arc plates 35 and the smaller arc plate 34. This gap forms the first section of the lower flow channel 31. One end of each of the two intermediate arc plates 35 is connected to the middle of each of the two straight baffles 33, and there is a gap between the other ends of the two intermediate arc plates 35 for cooling water to pass through. A large arc plate 36 is also disposed in the lower cavity 12, located outside the intermediate arc plates 35. There is also a gap between the large arc plate 36 and the intermediate arc plates 35, which forms the second section of the lower flow channel 31. The two ends of the opening formed by the large arc plate 36 are located outside the two straight baffles 33, and there is a gap between the large arc plate 36 and the straight baffles 33 for cooling water to pass through. The large arc plate 36 and the inner wall of the lower cavity 12 form the third section of the lower flow channel 31.

[0059] All of the above-mentioned connecting pipes 60 are located in the third section of the lower flow channel 31.

[0060] Generally, the central angles corresponding to the small arc plate 34 and the large arc plate 36 are both greater than 200°, while the central angle corresponding to the medium arc plate 35 is less than 180°.

[0061] In another specific embodiment:

[0062] See Figure 5 Since there are many exhaust pipes 70 distributed on the base 10 of the reduction furnace, the connecting pipe 60 is set as a jacket structure to facilitate the installation of the connecting pipe 60. That is, the connecting pipe 60 is sleeved on the exhaust pipe 70. The inner diameter of the connecting pipe 60 is larger than the outer diameter of the exhaust pipe 70, so that cooling water can pass through the gap between the exhaust pipe 70 and the connecting pipe 60, and can also cool the flue gas in the exhaust pipe 70 to a certain extent.

[0063] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A cooling system for a reduction furnace chassis, characterized in that, include: A base is located at the bottom of the reduction furnace, and the base has an upper cavity and a lower cavity. An upper plate assembly is disposed within the upper cavity, and an upper flow channel is separated within the upper cavity; The lower plate assembly is located in the lower cavity and a lower flow channel is separated in the lower cavity; The water inlet pipe has its outlet connected to the lower flow channel and is located near the edge of the base; The water outlet pipe has its inlet connected to the upper flow channel and is located near the middle of the base; Multiple connecting pipes are provided, with their two ends connected to the lower cavity and the upper cavity, respectively. All the connecting pipes are distributed around the circumference of the base and are close to the edge of the base.

2. The cooling system for the reduction furnace chassis according to claim 1, characterized in that, The upper flow channel has a spiral structure, and the fluid flows from the edge of the base towards the center.

3. The cooling system for the reduction furnace chassis according to claim 2, characterized in that, The upper flow channel has two sections, both of which are spiral structures.

4. The cooling system for the reduction furnace chassis according to claim 3, characterized in that, The edges of the two upper flow channels are respectively connected to multiple connecting pipes, and the fluid flow direction in the two upper flow channels is the same.

5. The cooling system for the reduction furnace chassis according to any one of claims 1-4, characterized in that, The upper plate assembly includes two spiral baffles, which are symmetrically distributed in the upper cavity, and the gap between the two spiral baffles forms the upper flow channel.

6. The cooling system for the reduction furnace chassis according to claim 1, characterized in that, The lower flow channel has an S-shaped structure.

7. The cooling system for the reduction furnace chassis according to claim 6, characterized in that, The lower flow channel has two channels, which are symmetrically distributed within the lower cavity.

8. The cooling system for the reduction furnace chassis according to claim 7, characterized in that, There is an inlet channel between the two lower flow channels; One end of the inlet channel is located at the edge of the base and is connected to the water inlet pipe; The other end of the inlet channel is connected to the middle of the lower flow channel.

9. The cooling system for the reduction furnace chassis according to claim 8, characterized in that, The lower cavity is provided with two parallel straight baffles with a gap between them, and the gap between the two straight baffles forms the entrance channel.

10. The cooling system for the reduction furnace chassis according to any one of claims 1-4 and 6-9, characterized in that, The lower layer assembly includes: A small arc plate is located in the middle of the lower cavity; Two intermediate arc plates are symmetrically arranged in the lower cavity and located outside the small arc plate; A large arc plate is disposed within the lower cavity, located outside the middle arc plate; The central angles of the small arc plate and the large arc plate are both greater than 200°, the central angle of the middle arc plate is less than 180°, and the gaps between each pair of the small arc plate, the middle arc plate and the large arc plate constitute the lower flow channel.

Images