A modular heat exchange chamber

Abstract

The present invention relates to a modular heat exchange bin, comprising an upper support frame and a lower support frame, wherein a row of non-metallic heat exchange units are arranged between the upper support frame and the lower support frame, and the ends of the non-metallic heat exchange units are sealed by end face seals, upper end connection blocks are symmetrically arranged on both sides of the upper support frame, and lower end connection blocks are symmetrically arranged on both sides of the lower support frame, and the upper and lower end connection blocks on the same side are connected by bolts, and the end face seals are fixed on the corresponding end connection blocks. The present invention has a compact structure, and the heat exchange bin is made into a standardized module, each module has a fixed heat exchange area, and the number of modular heat exchange bins can be freely combined according to needs, with low construction difficulty and convenient installation; the heat exchange unit is made of non-metallic material, which effectively prevents the equipment from corrosion when used at dew point temperature.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas waste heat recovery, and in particular to a modular heat exchange bin. Background Art

[0002] The waste heat of the flue gas from the heating furnace is used to preheat the combustion air, fuel gas, steam, water, etc., so as to increase and stabilize the furnace temperature and achieve the purpose of energy saving. This has been reached in the field of thermal engineering and is widely used. However, after the flue gas has been heat exchanged once, the heat exchange components are damaged due to the dew point corrosion of the flue gas. Although some materials resistant to flue gas dew point corrosion are used to prevent corrosion and damage to the heat exchange components, the effect is not very ideal. Moreover, with the continuous upgrading of energy-saving and environmental protection requirements, some old heating furnace equipment in particular can no longer meet the current requirements. However, if these non-standard equipment are modified in the traditional way, the project is complicated and the cost is high. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a modular heat exchange bin with a compact structure. The heat exchange bin is made into a standardized module. Each module has a fixed heat exchange area. The number of modular heat exchange bins can be freely combined according to needs. The construction difficulty is small and the installation is convenient. The heat exchange unit is made of non-metallic material to effectively prevent corrosion of the equipment when used at dew point temperature. Semicircular water tanks are staggered at the bottom of the non-metallic heat exchange unit to collect and gather droplets flowing along the surface of the heat exchange element into a collecting tank, and then discharged to the outside of the module through the interface.

[0004] The object of the present invention is achieved in that:

[0005] A modular heat exchange bin comprises an upper support frame and a lower support frame, a row of non-metallic heat exchange units are arranged between the upper support frame and the lower support frame, the ends of the non-metallic heat exchange units are sealed by end face seals, upper end connection blocks are symmetrically arranged on both sides of the upper support frame, lower end connection blocks are symmetrically arranged on both sides of the lower support frame, the upper and lower end connection blocks on the same side are connected by bolts, and the end face seals are fixed to the corresponding end connection blocks.

[0006] Preferably, the lower support frame is provided with a semicircular water tank, and the semicircular water tank is arranged below the non-metallic heat exchange unit.

[0007] Preferably, the semicircular water tanks are vertically layered and staggered.

[0008] Preferably, the liquid droplets flowing down the surface of the non-metallic heat exchange unit fall into the semicircular water trough and collect in the water collecting trough, and the semicircular water trough is provided with a through hole corresponding to the water collecting trough, and the through hole is arranged at the same position of each semicircular water trough.

[0009] Preferably, a plurality of upper limit units are provided in the middle along the length direction of the upper support frame, each upper limit unit is longitudinally spaced apart and provided with an upper middle slot, and the upper half of the non-metallic heat exchange unit is inserted into the upper middle slot;

[0010] A plurality of lower limit units are arranged in the middle along the length direction of the lower support frame, each lower limit unit is longitudinally spaced apart with lower middle slots, and the lower half of the non-metallic heat exchange unit is inserted in the lower middle slot.

[0011] Preferably, each non-metallic heat exchange unit includes a rubber sealing strip symmetrically arranged up and down and a non-metallic plate arranged left and right, and the rubber sealing strip and the non-metallic plate form an annular channel.

[0012] Preferably, an end reinforcement piece is further provided between the upper and lower end connection blocks on the same side, and a plurality of insert blocks are provided at intervals on the end reinforcement piece, and the insert blocks are inserted into the non-metallic heat exchange unit.

[0013] Preferably, the top surface of the upper end connecting block and the bottom surface of the lower end connecting block are provided with connecting bolt holes.

[0014] Preferably, the upper end connecting block and the upper limit unit of the upper support frame are integrally injection-molded plastic parts, and the lower end connecting block, the lower limit unit and the semicircular water tank of the lower support frame are integrally injection-molded plastic parts.

[0015] The beneficial effects of the present invention are:

[0016] 1. The heat exchange elements are made of non-metallic materials to prevent corrosion when the equipment is used at dew point temperature; the seals at the ends of the non-metallic heat exchange units are separated from the whole unit to ensure sealing and facilitate installation;

[0017] 2. By staggering semicircular water tanks at the bottom of the non-metallic heat exchange unit, the droplets flowing down the surface of the heat exchange element are collected and gathered into a water collection tank, and then discharged to the outside of the module through the interface;

[0018] 3. The structure is compact and easy to install. The heat exchange chamber is made into a standardized module. According to the requirements of the renovation project, the standardized modules are combined by calculation to meet the needs of various renovation projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 for Figure 1 Assembly diagram of .

[0021] Figure 3 It is a structural schematic diagram of the non-metallic heat exchange unit.

[0022] Figure 4This is a schematic diagram of the distribution of semicircular sinks.

[0023] Figure 5 This is a front view of the end face seal.

[0024] Figure 6 This is a schematic diagram of the back side of the end face seal.

[0025] Among them: upper support frame 1; upper end connection block 1.1; upper limit unit 1.2; lower support frame 2; lower end connection block 2.1; lower limit unit 2.2; semicircular water tank 2.3; non-metallic heat exchange unit 3; rubber sealing strip 3.1; non-metallic plate 3.2; end face sealing member 4; water collecting tank 5; end reinforcement member 6; plug block 6.1. DETAILED DESCRIPTION

[0026] See also Figure 1-6 The present invention relates to a modular heat exchange bin, comprising an upper support frame 1, a lower support frame 2, a non-metallic heat exchange unit 3, an end face seal 4 and a water collecting tank 5. A row of non-metallic heat exchange units 3 is arranged between the upper support frame 1 and the lower support frame 2. Multiple non-metallic heat exchange units 3 are distributed longitudinally. The upper half of the non-metallic heat exchange unit 3 is inserted in the upper support frame 1, and the lower half is inserted in the lower support frame 2. The ends of the non-metallic heat exchange unit 3 are sealed by end face seals 4. Upper end connecting blocks 1.1 are symmetrically provided on both sides of the upper support frame 1, and lower end connecting blocks 2.1 are symmetrically provided on both sides of the lower support frame 2. The upper and lower end connecting blocks 1.1 and 2.1 on the same side are connected by bolts, and the end face seals 4 are fixed to the corresponding end connecting blocks.

[0027] Each non-metallic heat exchange unit 3 includes a rubber sealing strip 3.1 symmetrically arranged up and down and a non-metallic plate 3.2 arranged left and right. The rubber sealing strip 3.1 and the non-metallic plate 3.2 form an annular channel. The non-metallic plate 3.2 is made of heat-resistant glass. The main component of this material does not react with sulfuric acid, so it is impossible for the heat exchange element to corrode in the flue gas. High-temperature flue gas enters and exits between adjacent non-metallic heat exchange units 3 from top to bottom, and cold air enters and exits the annular channel in each non-metallic heat exchange unit from left to right.

[0028] A plurality of upper limit units 1.2 are arranged in the middle along the length direction of the upper support frame 1. Each upper limit unit 1.2 is longitudinally spaced apart with an upper middle slot, and the upper half of the non-metallic heat exchange unit 3 is inserted into the upper middle slot.

[0029] A plurality of lower limit units 2.2 are provided in the middle along the length direction of the lower support frame 2. Each lower limit unit 2.2 is longitudinally spaced apart with a lower middle slot, and the lower half of the non-metallic heat exchange unit 3 is inserted into the lower middle slot.

[0030] Each slot provides position limiting protection for the non-metallic heat exchange unit 3 to prevent the non-metallic heat exchange unit from being damaged.

[0031] The lower support frame 2 is provided with a semicircular water tank 2.3, which is arranged below the non-metallic heat exchange unit 3. The semicircular water tank 2.3 is layered and staggered vertically. The droplets flowing down the surface of the non-metallic heat exchange unit 3 fall into the semicircular water tank 2.3 and collect in the water collection tank 5. The semicircular water tank 2.3 is provided with a through hole corresponding to the water collection tank 5. The through hole is arranged at the same position of each semicircular water tank 2.3, so that the water collection tank 5 can collect condensed water and discharge it uniformly. The water collection tank 5 is made of plastic.

[0032] The upper and lower end connection blocks 1.1 and 1.2 are respectively sleeved with end face seals 4, and the end face seals 4 are connected to the corresponding end connection blocks by glue. The end face seals 4 seal the ends of the non-metallic heat exchange units. The end face seals 4 are provided with sealing grooves corresponding to the ends of the non-metallic heat exchange units, and the sealing grooves are tightly matched with the non-metallic heat exchange units to achieve a sealing effect.

[0033] The upper end connection block 1.1 is provided with an upper end slot at intervals corresponding to the end of the non-metallic heat exchange unit 3, and the lower end connection block 2.1 is provided with a lower end slot at intervals corresponding to the end of the non-metallic heat exchange unit 3.

[0034] The top surface of the upper end connection block 1.1 and the bottom surface of the lower end connection block 2.1 are provided with connection bolt holes, and the end face seal 4 is provided with through holes corresponding to the connection bolt holes. The number of modular heat exchange bins can be freely combined according to design requirements, and the modular heat exchange bins can be fixed through the connection bolt holes.

[0035] The semicircular water tank 2.3 is used to collect condensed water on the flue gas side, and the semicircular water tank 2.3 prevents the condensed water on the flue gas side from corroding subsequent equipment.

[0036] An end reinforcement piece 6 is also provided between the upper and lower end connection blocks 1.1 and 1.2 on the same side. The end reinforcement piece 6 is made of plastic to ensure that the upper and lower end connection blocks 1.1 and 1.2 are firmly connected and protect the non-metallic heat exchange unit. The end reinforcement piece 6 is provided with a plurality of inserts 6.1 at intervals. The number of the inserts 6.1 matches the number of the non-metallic heat exchange units 3. The inserts 6.1 are inserted between the two non-metallic plates 3.2 of the non-metallic heat exchange unit 3 to prevent the non-metallic plates from being damaged by pressure, thereby improving the overall strength of the assembled non-metallic heat exchange unit.

[0037] The upper end connection block 1.1 and the upper limit unit 1.2 of the upper support frame 1 are integrally injection-molded plastic parts, and the lower end connection block 2.1, the lower limit unit 2.2 and the semicircular water tank 2.3 of the lower support frame 2 are integrally injection-molded plastic parts.

[0038] The end face seal 4 is made of rubber.

[0039] Each modular heat exchange bin has a fixed heat exchange area. The number of modular heat exchange bins can be determined according to the requirements of the renovation project and can be freely combined. This makes the structure of the flue gas heat exchange device compact and saves space. The ideal effect can be achieved by slightly changing the original flue and connecting the heat exchange bins in series or in parallel.

[0040] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A modular heat exchange chamber, characterized in that: It comprises an upper support frame and a lower support frame, a row of non-metallic heat exchange units are arranged between the upper support frame and the lower support frame, the ends of the non-metallic heat exchange units are sealed by end face seals, upper end connection blocks are symmetrically arranged on both sides of the upper support frame, lower end connection blocks are symmetrically arranged on both sides of the lower support frame, the upper and lower end connection blocks on the same side are connected by bolts, and the end face seals are fixed on the corresponding end connection blocks; The lower support frame is provided with a semicircular water tank, and the semicircular water tank is arranged below the non-metallic heat exchange unit; The liquid droplets flowing down the surface of the non-metallic heat exchange unit fall into the semicircular water trough and collect in the water collecting trough. The semicircular water trough is provided with through holes corresponding to the water collecting trough, and the through holes are arranged at the same position of each semicircular water trough.

2. A modular heat exchange chamber according to claim 1, characterized in that: The semicircular water tanks are vertically layered and staggered.

3. A modular heat exchange chamber according to claim 1, characterized in that: A plurality of upper limit units are provided in the middle along the length direction of the upper support frame, each upper limit unit is longitudinally spaced apart with an upper middle slot, and the upper half of the non-metallic heat exchange unit is inserted into the upper middle slot; A plurality of lower limit units are arranged in the middle along the length direction of the lower support frame, each lower limit unit is longitudinally spaced apart with lower middle slots, and the lower half of the non-metallic heat exchange unit is inserted in the lower middle slot.

4. A modular heat exchange chamber according to claim 1, characterized in that: Each non-metallic heat exchange unit includes a rubber sealing strip symmetrically arranged up and down and a non-metallic plate arranged left and right, and the rubber sealing strip and the non-metallic plate form an annular channel.

5. The modular heat exchange chamber according to claim 1, characterized in that: An end reinforcement piece is also provided between the upper and lower end connection blocks on the same side, and a plurality of insert blocks are provided at intervals on the end reinforcement piece, and the insert blocks are inserted into the non-metallic heat exchange unit.

6. The modular heat exchange chamber according to claim 1, characterized in that: The top surface of the upper end connecting block and the bottom surface of the lower end connecting block are provided with connecting bolt holes.

7. The modular heat exchange chamber according to claim 3, characterized in that: The upper end connection block and the upper limit unit of the upper support frame are integrally injection-molded plastic parts, and the lower end connection block, the lower limit unit and the semicircular water tank of the lower support frame are integrally injection-molded plastic parts.

Images