Fan heat exchange system
By designing a fan heat exchange system and using openable and closable partitions and blind plates to adjust the heat, the problem of changing heat demand for ash block drying was solved, and flexible heat regulation and cost control were achieved.
Patent Information
- Application Number
- CN202422651182.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In the prior art, it is difficult to adjust the variation in heat demand for drying ash blocks, resulting in energy waste or increased costs.
A fan heat exchange system is designed, including a curing kiln body, main heating pipes, heat exchange units and a water tank. By setting openable and closable partitions and blind plates, the heat demand can be flexibly adjusted according to the number of ash blocks. The heat exchange units can be opened individually or simultaneously to meet different heat requirements.
The heat demand can be flexibly adjusted according to the number of ash blocks, thus avoiding energy waste and cost increase and improving the flexibility and efficiency of the system.
Smart Images
Figure CN223412437U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fan heat exchange, and more specifically, relates to a fan heat exchange system. Background Art
[0002] When processing ash blocks, a steam heat exchanger is used to heat the external air and pass it into the steam curing kiln to dry the ash blocks.
[0003] Ash lumps are recycled materials compressed from post-steelmaking coal ash. Their production varies significantly with steel production output. When the number of lumps is small, the heat demand is low. While steam heat exchangers can meet the drying requirements, this wastes energy. When the number of lumps is large, the heat demand is high, and increasing the steam heat exchanger's power significantly increases costs. Utility Model Content
[0004] The utility model aims to provide a fan heat exchange system, aiming to solve the problem that different quantities of ash blocks require different amounts of heat for drying and are difficult to adjust.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a fan heat exchange system, comprising:
[0006] A curing kiln body, wherein a plurality of drying kilns are sequentially arranged inside the curing kiln body, and the front sides of the plurality of drying kilns are each provided with a material inlet;
[0007] A main heating pipe, the main heating pipe is transversely arranged at the rear side of the curing kiln body, the main heating pipe is connected to the plurality of drying kilns respectively, a blind plate is provided in the middle of the main heating pipe, and openable and closable partitions are provided on both sides of the main heating pipe;
[0008] Two heat exchange units, the two heat exchange units are respectively arranged on both sides of the curing kiln body, the heat exchange units include a steam heat exchanger and a fan, the two fans respectively guide the external air to pass through the corresponding steam heat exchanger to heat up, and then pass into the two ends of the main heating pipe;
[0009] A water tank is provided on one side of the curing kiln body and is used to receive condensed water generated by heat conduction of high-temperature steam through the two heat exchange units.
[0010] In a possible implementation, the drying kiln extends along the front-to-back length direction of the curing kiln body, and a plurality of the drying kilns are sequentially arranged along the left-to-right width direction of the curing kiln body.
[0011] In a possible implementation, a travel switch is provided at the material inlet of the drying kiln, and an exhaust fan is provided at the tail of the drying kiln, and the travel switch is used to control the opening and closing of the exhaust fan.
[0012] In a possible implementation, thermal insulation rock wool is provided on the outer periphery of the main heating pipe, glass fiber cloth is wrapped around the outside of the thermal insulation rock wool, and an asphalt layer is coated on the outside of the glass fiber cloth.
[0013] In a possible implementation, the heat exchange unit further includes a steam inlet pipe and a condensate discharge pipe, and a buffer tank is provided on the condensate discharge pipe of the heat exchange unit on a side away from the water tank.
[0014] In a possible implementation, the heat exchange unit further includes an air inlet pipe and a hot air exhaust pipe, the air inlet pipe is connected to the fan, and 90° elbows are respectively provided at both ends of the main heating pipe, and the two 90° elbows are respectively connected to the two hot air exhaust pipes.
[0015] In a possible implementation, the main heating pipe includes two heating pipe sections that are axially connected in sequence, the blind plate is arranged between the two heating pipe sections, and the partition is arranged between the heating pipe section and the 90° elbow.
[0016] In a possible implementation, the water tank is provided with two discharge ports and one sewage outlet, the two discharge ports are connected to the cooling tower and the slag workshop respectively, and the sewage outlet is connected to the ditch.
[0017] The fan heat exchange system provided by the present invention has the following beneficial effects: compared with the prior art, two heat exchange units are respectively arranged on either side of the curing kiln body and respectively connected to the two ends of the main heating pipe, a blind plate is provided in the middle of the main heating pipe, and openable and closable partitions are provided on both sides of the main heating pipe. When the total amount of ash blocks processed by the entire curing kiln is small, a single heat exchange unit is opened, and the partition on the corresponding side is opened at the same time. In this case, the ash blocks are placed in multiple drying kilns near the side of the open partition. High-temperature steam passes through the heat exchange unit to heat the external air introduced by the fan, and then passes it into the multiple drying kilns where the ash blocks are placed. When the total amount of ash blocks processed by the entire curing kiln is large, both heat exchange units are opened simultaneously, and both partitions are opened at the same time. In this case, the ash blocks are placed in multiple drying kilns as a whole, and high-temperature steam passes through the heat exchange unit to heat the external air introduced by the fan, and then passes it into the multiple drying kilns. The utility model provides a fan heat exchange system, which can open one heat exchange unit separately or two heat exchange units at the same time according to the number of ash blocks to be processed, thereby meeting different heat requirements without increasing the power of the steam heat exchanger and increasing the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0019] Figure 1 A schematic structural diagram of a fan heat exchange system provided in an embodiment of the present utility model;
[0020] Figure 2 A schematic structural diagram of a fan heat exchange system provided in an embodiment of the present utility model.
[0021] Description of reference numerals:
[0022] 1. Curing kiln body; 2. Drying kiln; 3. Limit switch; 4. Main heating pipe; 5. Blind plate; 6. Partition; 7. Steam heat exchanger; 8. Fan; 9. Insulating rock wool; 10. Glass cloth; 11. Asphalt layer; 12. Water tank; 13. Steam inlet pipe; 14. Condensate drain pipe; 15. Buffer tank; 16. Air inlet pipe; 17. 90° elbow; 18. Hot air drain pipe; 19. Discharge port; 20. Sewage outlet. DETAILED DESCRIPTION
[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0024] In the claims, description and the above-mentioned drawings of the present utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" is to distinguish different objects rather than to describe a specific order.
[0025] In the claims, specification and the above-mentioned drawings of the present utility model, unless otherwise expressly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", "high", "low", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present utility model.
[0026] See also Figure 1 The heat exchange system of the fan 8 provided by the present invention is now described. The heat exchange system of the fan 8 includes a curing kiln body 1, a main heating pipe 4, two heat exchange units and a water tank 12.
[0027] A plurality of drying kilns 2 are sequentially arranged inside the curing kiln main body 1, and the front sides of the plurality of drying kilns 2 are provided with a material inlet; a main heating pipe 4 is horizontally arranged on the rear side of the curing kiln main body 1, and the main heating pipe 4 is connected to the plurality of drying kilns 2 respectively, a blind plate 5 is provided in the middle of the main heating pipe 4, and openable and closable partitions 6 are provided on both sides of the main heating pipe 4; two heat exchange units are respectively arranged on both sides of the curing kiln main body 1, and the heat exchange units include a steam heat exchanger 7 and a fan 8. The two fans 8 respectively guide the external air to pass through the corresponding steam heat exchanger 7 for heating, and then pass into the two ends of the main heating pipe 4; a water tank 12 is arranged on one side of the curing kiln main body 1, and is used to receive condensed water generated after the high-temperature steam passes through the two heat exchange units for heat conduction.
[0028] The present invention provides a heat exchange system with a fan 8. Compared to the prior art, two heat exchange units are respectively disposed on either side of the curing kiln body 1 and connected to the two ends of the main heating pipe 4. A blind plate 5 is provided in the middle of the main heating pipe 4, and openable and closable partitions 6 are provided on either side of the main heating pipe 4. When the curing kiln processes a small amount of ash blocks, one heat exchange unit is activated, and the partition 6 on the corresponding side is simultaneously opened. The ash blocks are then placed in multiple drying kilns 2 near the open partition 6. High-temperature steam passes through the heat exchange unit to heat the external air introduced by the fan 8 before passing it into the multiple drying kilns 2 where the ash blocks are placed. When the curing kiln processes a large amount of ash blocks, both heat exchange units are activated simultaneously, and both partitions 6 are opened. The ash blocks are then placed in multiple drying kilns 2 as a whole. High-temperature steam passes through the heat exchange unit to heat the external air introduced by the fan 8 before passing it into the multiple drying kilns 2. The utility model provides a fan 8 heat exchange system, which can open one heat exchange unit alone or two heat exchange units at the same time according to the number of ash blocks to be processed, thereby meeting different heat requirements without increasing the power of the steam heat exchanger 7 and increasing the manufacturing cost.
[0029] See also Figure 1 A single drying kiln 2 extends along the front-to-back length direction of the curing kiln main body 1, and multiple drying kilns 2 are arranged in sequence along the left-right width direction of the curing kiln main body 1. Multiple drying kilns 2 occupy most of the available space inside the curing kiln main body 1 to improve the processing capacity of the curing kiln main body 1 itself.
[0030] In addition, a limit switch 3 is installed at the material inlet of drying kiln 2. An exhaust fan (not shown) is located at the rear of drying kiln 2. Limit switch 3 controls the exhaust fan's on / off status. When the kiln door at the material inlet of drying kiln 2 opens and touches limit switch 3, the exhaust fan turns on. When the kiln door at the material inlet of drying kiln 2 closes and touches limit switch 3, the exhaust fan turns off.
[0031] See also Figure 2 The outer periphery of the main heating pipe 4 is provided with insulating rock wool 9, which is 50-100 mm thick. Glass cloth 10 is wrapped around the outer surface of the insulating rock wool 9, and the outer surface of the glass cloth 10 is coated with an asphalt layer 11. The insulating rock wool 9, glass cloth 10, and asphalt layer 11 together form a stable thermal insulation structure that can reduce the high temperature inside the main heating pipe 4 and exchange heat with the external environment.
[0032] The heat exchange unit also includes a steam inlet pipe 13 and a condensate drain pipe 14. A buffer tank 15 is provided on the condensate drain pipe 14 of the heat exchange unit on the side away from the water tank 12. A magnetic level gauge and a temperature sensor are installed on the buffer tank 15. The buffer tank 15 receives condensate discharged from the steam heat exchanger 7. When the condensate level is higher than half of the buffer tank 15, the buffer tank 15 discharges the condensate through the condensate drain pipe 14. When the condensate level is lower than 200 mm, the buffer tank 15 stops discharging the condensate. The buffer tank 15 can continuously receive condensate discharged from the steam heat exchanger 7 and then discharge it intermittently through the condensate drain pipe 14, ensuring that the condensate in the condensate drain pipe 14 can be discharged continuously, avoiding the problem of loud noise caused by discharging condensate when it is not full.
[0033] The heat exchange unit also includes an air inlet pipe 16 and a hot air exhaust pipe 18. The air inlet pipe 16 is connected to the fan 8. A 90° elbow 17 is provided at both ends of the main heating pipe 4. The two 90° elbows 17 are respectively connected to the two hot air exhaust pipes 18. The two 90° elbows 17 can form transition pipe sections at both ends of the main heating pipe 4 so that the hot air can smoothly enter the main heating pipe 4 from the hot air exhaust pipe 18, reducing wind noise.
[0034] Specifically, the main heating pipe 4 comprises two axially connected heating pipe sections. A blind plate 5 is positioned between the two sections. The blind plate 5 is clamped between the flanges at the opposing ends of the two sections, forming a seal to prevent hot air from entering the other side. A partition plate 6 is positioned between the heating pipe sections and the 90° elbow 17. The partition plate 6 can be a rotating structure that can be opened and closed by rotation. Alternatively, a hole can be provided in the partition plate 6 to allow hot air to pass through.
[0035] Among them, the water tank 12 is provided with two discharge ports 19 and a sewage outlet 20. The two discharge ports 19 are respectively connected to the cooling tower and the slag workshop, which can realize the recovery of condensed water. The sewage outlet 20 is connected to the ditch. The sewage outlet 20 is opened at the bottom of the water tank 12. The condensed water at the bottom of the water tank 12 is discharged into the ditch together with the dirt.
[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A fan (8) heat exchange system, characterized in that: include: A curing kiln main body (1), wherein a plurality of drying kilns (2) are sequentially arranged inside the curing kiln main body (1), and the front sides of the plurality of drying kilns (2) are all provided with a material inlet; A main heating pipe (4), the main heating pipe (4) is transversely arranged at the rear side of the curing kiln body (1), the main heating pipe (4) is connected to the plurality of drying kilns (2), a blind plate (5) is provided in the middle of the main heating pipe (4), and openable and closable partitions (6) are provided on both sides of the main heating pipe (4); Two heat exchange units, the two heat exchange units are respectively arranged on both sides of the curing kiln body (1), the heat exchange units include a steam heat exchanger (7) and a fan (8), the two fans (8) respectively guide the external air to pass through the corresponding steam heat exchanger (7) to heat it, and then pass it into the two ends of the main heating pipe (4); A water tank (12) is provided on one side of the curing kiln body (1) and is used to receive condensed water generated by heat conduction of high-temperature steam through the two heat exchange units.
2. A fan (8) heat exchange system according to claim 1, characterized in that: The drying kiln (2) extends along the front-to-back length direction of the curing kiln main body (1), and a plurality of the drying kilns (2) are arranged in sequence along the left-to-right width direction of the curing kiln main body (1).
3. A fan (8) heat exchange system according to claim 1, characterized in that: The material inlet of the drying kiln (2) is provided with a travel switch (3), and the tail of the drying kiln (2) is provided with an exhaust fan, and the travel switch (3) is used to control the opening and closing of the exhaust fan.
4. A fan (8) heat exchange system according to claim 1, characterized in that: The outer periphery of the main heating pipe (4) is provided with thermal insulation rock wool (9), the exterior of the thermal insulation rock wool (9) is wrapped with glass fiber cloth (10), and the exterior of the glass fiber cloth (10) is coated with an asphalt layer (11).
5. A fan (8) heat exchange system according to claim 1, characterized in that: The heat exchange unit further comprises a steam inlet pipe (13) and a condensate drain pipe (14); a buffer tank (15) is provided on the condensate drain pipe (14) of the heat exchange unit on the side away from the water tank (12).
6. A fan (8) heat exchange system according to claim 1, characterized in that: The heat exchange unit further comprises an air inlet pipe (16) and a hot air exhaust pipe (18), wherein the air inlet pipe (16) is connected to the fan (8), and 90° elbows (17) are respectively provided at both ends of the main heating pipe (4), and the two 90° elbows (17) are respectively connected to the two hot air exhaust pipes (18).
7. A fan (8) heat exchange system according to claim 6, characterized in that: The main heating pipe (4) comprises two heating pipe sections connected axially in sequence, the blind plate (5) is arranged between the two heating pipe sections, and the partition plate (6) is arranged between the heating pipe section and the 90° elbow (17).
8. A fan (8) heat exchange system according to claim 1, characterized in that: The water tank (12) is provided with two discharge ports (19) and a sewage outlet (20), the two discharge ports (19) are connected to the cooling tower and the slag workshop respectively, and the sewage outlet (20) is connected to the ditch.