CN212300016U - Heat exchange unit - Google Patents
Heat exchange unit Download PDFInfo
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- CN212300016U CN212300016U CN202020366006.1U CN202020366006U CN212300016U CN 212300016 U CN212300016 U CN 212300016U CN 202020366006 U CN202020366006 U CN 202020366006U CN 212300016 U CN212300016 U CN 212300016U
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Abstract
The utility model discloses a heat exchange unit for reducing sliding friction of two adjacent layers of heat exchangers through ceramic rods, which comprises two or more layers of heat exchangers, wherein each layer of heat exchanger comprises a heat exchange tube, a first connecting brick and a second connecting brick, the first end of the heat exchange tube extends into the mounting hole of the first connecting brick, and the second end of the heat exchange tube extends into the mounting hole of the second connecting brick; the first connecting brick is provided with a first sliding matching surface and a first air guide mounting surface, and the second connecting brick is provided with a second sliding matching surface and a second air guide mounting surface; between any two adjacent layers of heat exchangers: the first sliding matching surface and the second sliding matching surface are opposite up and down, and a ceramic rod is arranged between the first sliding matching surface and the second sliding matching surface. The utility model discloses set up ceramic rod at the heat exchanger sliding layer, this kind of structural style can effectual reduction intensification in-process heat exchanger and the inconsistent and each layer heat exchanger of coke oven brick inflation between the expansion stress that produces because the temperature is inconsistent. The method plays a positive role in preventing the heat exchanger from being broken due to inconsistent expansion of the heat exchanger.
Description
Technical Field
The utility model relates to the technical field of coke oven heat exchange devices. In particular to a heat exchange unit which reduces the sliding friction of two adjacent layers of heat exchangers and avoids the fracture of the heat exchangers through ceramic rods.
Background
The heat exchange type two-section coke oven changes the heat storage chamber of the traditional coke oven into a heat exchange chamber, changes the bottom smoke exhaust into the upper smoke exhaust, reduces the temperature of the smoke from 1250 ℃ to about 600 ℃ through the heat exchange chamber, preheats the coal powder to about 250 ℃ through the preheating chamber, reduces the moisture content of the coal powder from 10% to 0, and can shorten the coking time by about 8 hours.
Compared with the traditional heat accumulating type coke oven, the heat exchange type two-section coke oven has obvious advantages, and is mainly embodied in the following aspects: 1. the coking cost is reduced, and 250 yuan can be saved for each ton of coke; 2. the pollution is reduced, the residual ammonia water amount is reduced by 85 percent, the phenol-cyanogen sewage amount is reduced by more than two thirds, the discharge amount of nitrogen oxides is greatly reduced, and the coal loading pollution is avoided. 3. The energy is saved, the heat consumption for coking is reduced by 18.88 percent, about 699 hundred million kcal of energy can be saved (calculated according to 2016 year coke yield of 4.5 million tons), and the energy is saved by 0.1 million tons of standard coal. 4. The investment cost is reduced, and the investment 1/3 is saved compared with the traditional coke oven.
The coking process of the heat exchange type two-stage coke oven has huge energy-saving and emission-reducing potential, and can realize win-win environmental benefit and economic benefit by popularizing the use of the heat exchange type two-stage coke oven.
In order to realize the preheating coal coking, the temperature of the flue gas is reduced to about 600 ℃ through a heat exchange device, which is very important.
When the heat exchanger is used, one end of the upper layer of heat exchanger and the lower layer of heat exchanger are in concave-convex fit up and down (the convex brick air passage of one heat exchanger is clamped in the concave brick air passage of the other heat exchanger), and the other end of the heat exchanger is horizontally placed and the surfaces of the upper brick and the lower brick are attached. In the process of baking the coke oven, because the expansion of the coke oven silica bricks is large, the heat exchanger can be driven to generate relative sliding displacement at high temperature, and at the moment, if the friction force of the surfaces of the bricks attached to the upper heat exchanger and the lower heat exchanger is too large, the situation that the heat exchange tube of the heat exchanger is broken by pulling is easily caused. In addition, when the heat exchanger is in a working state, the temperature of the flue gas is gradually reduced from bottom to top, the temperature difference of about 50 ℃ is probably generated between every two layers of heat exchangers, and if the friction force between the surfaces of the bricks attached to each other of the upper heat exchanger and the lower heat exchanger is too large, the heat exchange tubes of the heat exchanger are easy to break.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides an adopt ceramic rod to reduce sliding layer frictional force between the lower floor heat exchanger, avoid heat exchanger heat exchange tube in use fracture damage, ensure the heat transfer unit of heat exchanger steady operation.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
the heat exchange unit comprises two or more layers of heat exchangers, each layer of heat exchanger comprises a heat exchange tube, a first connecting brick and a second connecting brick, the first end of the heat exchange tube extends into the mounting hole of the first connecting brick, and the second end of the heat exchange tube extends into the mounting hole of the second connecting brick; the first connecting brick is provided with a first sliding matching surface and a first air guide mounting surface, and the second connecting brick is provided with a second sliding matching surface and a second air guide mounting surface; between any two adjacent layers of the heat exchanger: the first sliding matching surface and the second sliding matching surface are opposite to each other from top to bottom, a ceramic rod is placed between the first sliding matching surface and the second sliding matching surface, the first air guide installation surface and the second air guide installation surface are opposite to each other from top to bottom, a first inter-brick air guide hole in the first air guide installation surface is communicated with a second inter-brick air guide hole in the second air guide installation surface in a fluid mode, the first inter-brick air guide hole is communicated with the first end of the heat exchange tube in a fluid mode through an intra-brick air guide hole in the first connecting brick, and the second inter-brick air guide hole is communicated with the second end of the heat exchange tube in a fluid mode through an intra-brick air guide hole in the.
The heat exchange unit for reducing sliding friction of the two adjacent layers of heat exchangers through the ceramic rods is cylindrical.
The heat exchange unit for reducing the sliding friction of the two adjacent layers of heat exchangers through the ceramic rods has the advantages that the number of the ceramic rods arranged between the first sliding matching surface and the second sliding matching surface is more than or equal to 2.
The heat exchange unit reduces the sliding friction of the two adjacent layers of heat exchangers through the ceramic rods, and the diameter of the cross section of each ceramic rod is larger than or equal to 3 mm.
The heat exchange unit for reducing the sliding friction of the two adjacent layers of heat exchangers through the ceramic rods has the refractoriness of more than or equal to 1580 ℃.
The heat exchange unit reduces the sliding friction of the two adjacent layers of heat exchangers through the ceramic rods, and the ceramic rods are aluminum oxide rods, silicon carbide rods or zirconium oxide rods.
The heat exchange unit for reducing the sliding friction of the two adjacent layers of heat exchangers through the ceramic rods is characterized in that the first sliding matching surface and the second sliding matching surface are both planes.
In the heat exchange unit for reducing the sliding friction of the two adjacent layers of heat exchangers through the ceramic rod, any one of the first sliding matching surface and the second sliding matching surface is a plane, the other sliding matching surface is also a plane, and a concave groove is formed in the plane, the ceramic rod is placed in the groove, and the diameter of the cross section of the ceramic rod is larger than the depth of the groove.
The heat exchange unit for reducing the sliding friction of the two adjacent layers of heat exchangers through the ceramic rods has the advantages that the diameter of the cross section of each ceramic rod is smaller than the minimum width of the corresponding groove.
The heat exchange unit for reducing the sliding friction of the adjacent two layers of heat exchangers through the ceramic rod is characterized in that the length direction of the ceramic rod is as follows: the length of the ceramic rod is smaller than or equal to the width of the first connecting brick and the second connecting brick, and the length of the ceramic rod is smaller than that of the groove.
The utility model discloses following technological effect has been gained: the method solves the problem that the heat exchange tubes are broken due to inconsistent expansion of the heat exchangers and bricks in the temperature rising process and inconsistent temperature between the heat exchangers on each layer.
Drawings
Fig. 1A is a schematic front view of a single-layer heat exchanger, and fig. 1B is a schematic top view of the single-layer heat exchanger shown in fig. 1A.
Figure 2 is a schematic view of the placement of a ceramic rod between two layers of a heat exchanger.
Fig. 3A is a schematic front view of a ceramic rod placed on a sliding surface of a lower heat exchanger, and fig. 3B is a schematic top view of the ceramic rod shown in fig. 3A placed on the sliding surface of the lower heat exchanger.
Fig. 4A is a schematic structural diagram of a front view of a ceramic rod placed in a groove on a sliding surface of a lower heat exchanger, and fig. 4B is a schematic structural diagram of a top view of the ceramic rod shown in fig. 4A placed in a groove on a sliding surface of a lower heat exchanger.
Fig. 5 is a schematic perspective view of the ceramic rod of fig. 2 placed between two layers of a heat exchanger.
Fig. 6 is a schematic perspective view of another orientation of the ceramic rod of fig. 5 positioned between two layers of a heat exchanger.
Fig. 7 is a schematic perspective view of another orientation of the ceramic rod of fig. 5 positioned between two layers of a heat exchanger.
Fig. 8 is a schematic perspective view of a two-layer heat exchanger with the ceramic rods of fig. 4 placed in the grooves.
In the figure, 1, a heat exchange tube; 2. a first connecting brick; 2-1, a first sliding mating surface; 2-2, a first air guide mounting surface, 2-21 and a first air guide hole between bricks; 3. fire clay; 4. a ceramic rod; 5. a groove; 7. a second connecting brick; 7-1, a second sliding mating surface; 7-2, a second air guide mounting surface; 7-21-second inter-brick air guide hole.
Detailed Description
Example 1
As shown in fig. 1 to 3 and 5 to 6, the heat exchange unit for reducing sliding friction of two adjacent layers of heat exchangers through ceramic rods comprises two or more layers of heat exchangers, each layer of heat exchanger comprises a heat exchange tube (1), a first connecting brick 2 and a second connecting brick 7, a first end of the heat exchange tube 1 extends into a mounting hole of the first connecting brick 2, and a second end of the heat exchange tube 1 extends into a mounting hole of the second connecting brick 7; the first connecting brick 2 is provided with a first sliding matching surface 2-1 and a first air guide mounting surface 2-2, and the second connecting brick 7 is provided with a second sliding matching surface 7-1 and a second air guide mounting surface 7-2; between any two adjacent layers of the heat exchanger: the first sliding matching surface 2-1 and the second sliding matching surface 7-1 are opposite up and down, a ceramic rod 4 is placed between the first sliding matching surface 2-1 and the second sliding matching surface 7-1, the first air guide installation surface 2-2 and the second air guide installation surface 7-2 are opposite up and down, a first inter-brick air guide hole 2-21 on the first air guide installation surface 2-2 is in fluid communication with a second inter-brick air guide hole 7-21 on the second air guide installation surface 7-2, the first inter-brick air guide hole 2-21 is in fluid communication with the first end of the heat exchange tube 1 through an intra-brick air guide hole in the first connecting brick 2, and the second inter-brick air guide hole 7-21 is in fluid communication with the second end of the heat exchange tube 1 through an intra-brick air guide hole in the second connecting brick 7.
The ceramic rod 4 is cylindrical. The number of the ceramic rods 4 arranged between the first sliding matching surface 2-1 and the second sliding matching surface 7-1 is more than or equal to 2. The cross-sectional diameter of the ceramic rod 4 is greater than or equal to 3 mm. The refractoriness of the ceramic rod 4 is more than or equal to 1580 ℃. The ceramic rod 4 is an alumina rod, a silicon carbide rod or a zirconia rod. The first sliding matching surface 2-1 and the second sliding matching surface 7-1 are both plane surfaces. Along the length direction of the ceramic rod 4: the length of the ceramic rod 4 is less than or equal to the width of the first connecting brick 2 and the second connecting brick 7.
This embodiment adopts and places the ceramic rod between two-layer heat exchanger sliding layer, adopts the ceramic rod to reduce heat exchanger sliding layer frictional force, avoids heat exchanger heat exchange tube in use to damage, the stable work of guarantee heat exchanger. The method solves the problem that the heat exchange tube is broken due to inconsistent expansion of the heat exchanger and bricks in the temperature rise process and inconsistent temperature among the heat exchangers in each layer.
Example 2
As shown in fig. 4 and 8, the present embodiment is different from embodiment 1 in that: the first sliding matching surface 2-1 is a plane, the second sliding matching surface 7-1 is also a plane, and an inwards concave groove 5 is formed in the plane, the ceramic rod 4 is placed in the groove 5, and the diameter of the cross section of the ceramic rod 4 is larger than the depth of the groove 5; and the cross-sectional diameter of the ceramic rod 4 is smaller than the smallest width of the groove 5. Along the length direction of the ceramic rod 4: the length of the ceramic rod 4 is less than or equal to the width of the first and second connection bricks 2, 7, and the length of the ceramic rod 4 is less than the length of the groove 5.
In the embodiment, the ceramic rod 4 is placed between the two heat exchanger sliding layers, and the arranged groove 5 is more convenient for placing the ceramic rod 4 between the first sliding matching surface 2-1 and the second sliding matching surface 7-1, and preventing the ceramic rod 4 from sliding off; the ceramic rod is adopted to reduce the friction force of the sliding layer of the heat exchanger, so that the heat exchange tube of the heat exchanger is prevented from being damaged in use, and the stable work of the heat exchanger is guaranteed. The method solves the problem that the heat exchange tube is broken due to inconsistent expansion of the heat exchanger and bricks in the temperature rise process and inconsistent temperature among the heat exchangers in each layer.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. The heat exchange unit is characterized by comprising two or more layers of heat exchangers, each layer of heat exchanger comprises a heat exchange tube (1), a first connecting brick (2) and a second connecting brick (7), the first end of the heat exchange tube (1) extends into the mounting hole of the first connecting brick (2), and the second end of the heat exchange tube (1) extends into the mounting hole of the second connecting brick (7); the first connecting brick (2) is provided with a first sliding matching surface (2-1) and a first air guide mounting surface (2-2), and the second connecting brick (7) is provided with a second sliding matching surface (7-1) and a second air guide mounting surface (7-2); between any two adjacent layers of the heat exchanger: the first sliding matching surface (2-1) and the second sliding matching surface (7-1) are opposite up and down, a ceramic rod (4) is arranged between the first sliding matching surface and the second sliding matching surface, the first air guide mounting surface (2-2) is attached to the second air guide mounting surface (7-2) in an up-down opposite manner, and a first inter-brick air guide hole (2-21) on the first air guide mounting surface (2-2) is in fluid communication with a second inter-brick air guide hole (7-21) on the second air guide mounting surface (7-2), the first inter-brick air guide holes (2-21) are communicated with the first end of the heat exchange tube (1) through the intra-brick air guide holes in the first connecting brick (2), and the second air guide holes (7-21) between the bricks are communicated with the second end fluid of the heat exchange tube (1) through the air guide holes in the bricks in the second connecting brick (7).
2. A heat exchange unit according to claim 1, characterised in that the ceramic rods (4) are cylindrical.
3. A heat exchange unit according to claim 1, characterised in that the number of ceramic rods (4) placed between the first sliding engagement surface (2-1) and the second sliding engagement surface (7-1) is greater than or equal to 2.
4. A heat exchange unit according to claim 1, characterised in that the cross-sectional diameter of the ceramic rods (4) is greater than or equal to 3 mm.
5. A heat exchange unit according to claim 1, characterised in that the first sliding engagement surface (2-1) and the second sliding engagement surface (7-1) are both planar.
6. A heat exchange unit according to claim 1, characterised in that either one of the first sliding engagement surface (2-1) and the second sliding engagement surface (7-1) is plane and the other is also plane and has a recessed groove (5) formed therein, the ceramic rod (4) being placed in the groove (5) and the cross-sectional diameter of the ceramic rod (4) being greater than the depth of the groove (5).
7. A heat exchange unit according to claim 6, characterised in that the cross-sectional diameter of the ceramic rods (4) is smaller than the smallest width of the grooves (5).
8. A heat exchange unit according to claim 6, characterised in that along the length of the ceramic rods (4): the length of the ceramic rod (4) is less than or equal to the width of the first connecting brick (2) and the second connecting brick (7), and the length of the ceramic rod (4) is less than the length of the groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020366006.1U CN212300016U (en) | 2020-03-21 | 2020-03-21 | Heat exchange unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020366006.1U CN212300016U (en) | 2020-03-21 | 2020-03-21 | Heat exchange unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212300016U true CN212300016U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020366006.1U Active CN212300016U (en) | 2020-03-21 | 2020-03-21 | Heat exchange unit |
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| CN (1) | CN212300016U (en) |
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2020
- 2020-03-21 CN CN202020366006.1U patent/CN212300016U/en active Active
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