Modularized graphene bulk curing barn air heater capable of enhancing heat exchange

Abstract

The utility model relates to a modularized graphene bulk curing barn air heater capable of enhancing heat exchange, and belongs to the technical field of bulk curing barn air heating equipment. The device comprises an air inlet pipe, an air inlet pipe joint, a heat preservation shell, an air outlet pipe joint, an air supply fan, an air outlet pipe, a heating section and a mixing space, a graphene heating module of the heating section adopts a design that graphene heating sheets and metal corrugated plates are arranged in a crossed manner, and the heat exchange efficiency is improved by utilizing high thermal conductivity of graphene and strengthening convective heat exchange of the metal corrugated plates; the mixing space strengthens air disturbance through the turbulence effect, and the heat transfer temperature difference between air and the graphene heating sheet and the metal corrugated plate is increased; the heat preservation shell is made of a high-temperature-resistant material and internally provided with a heat preservation rock wool layer, and heat loss is reduced; an access door with an observation window is arranged on the side face of the heat preservation shell, and replacement of the faulted graphene heating module is facilitated through a T-shaped clamping groove and a rapid insertion and extraction interface. The device has the advantages of enhanced heat exchange, high efficiency, energy conservation, modular design, easiness in maintenance and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a modularization graphene intensive curing barn air heater of heat transfer enhancement belongs to intensive curing barn's air heating equipment technical field. BACKGROUND

[0002] As the important equipment in the field of agricultural drying, the performance of the air heater, the core component of the intensive curing barn, directly affects the baking quality and energy cost. The traditional curing barns mostly use coal-fired hot blast furnace, metal fin type electric heating tube and the like as the heating source, and have the problems of low heat exchange efficiency and high energy consumption. In addition, the heating equipment of the intensive curing barn lacks modular design, and when the components are damaged, it is difficult to quickly disassemble and replace, the maintenance and repair are complex, and it is difficult to meet the high-quality production demand.

[0003] The graphene material has super-high thermal conductivity and excellent electric-thermal conversion efficiency, and the application of the graphene in the air heating field can significantly improve the heat exchange efficiency. At the same time, the modular design is adopted, the number of heating sections and mixing spaces can be flexibly adjusted according to the heat load of the intensive curing barn, the equipment utilization rate is improved, and the quick replacement of the fault module is realized, thereby reducing the downtime maintenance time. The modularization graphene intensive curing barn air heater of heat transfer enhancement has broad application prospect and important application value. SUMMARY

[0004] The utility model wants to solve the technical problem: the utility model provides a modularization graphene intensive curing barn air heater of heat transfer enhancement to solve the low heat exchange efficiency, the difficult maintenance, the poor heating capacity regulation performance and the like of the existing curing barn air heater, the utility model realizes the technical effect of high efficiency, energy saving, modularization maintenance and high heat exchange efficiency.

[0005] The utility model technical scheme is: a modularization graphene intensive curing barn air heater of heat transfer enhancement, including air inlet pipe 1, air inlet pipe joint 2, heat preservation shell 3, mixing space 4, heating section 5, air outlet pipe joint 6, air supply fan 7, air outlet pipe 8;

[0006] A plurality of heating sections 5 are sequentially arranged in the heat preservation shell 3 along the air flow direction, the space surrounded by the adjacent two heating sections 5 and the heat preservation shell 3 is the mixing space 4, the upper part of the heat preservation shell 3 is provided with the air outlet pipe joint 6, the air outlet pipe joint 6 is connected with the air supply fan 7, the air supply fan 7 is installed in the air outlet pipe 8, the lower part of the heat preservation shell 3 is provided with the air inlet pipe joint 2, and the air inlet pipe joint 2 is connected with the air inlet pipe 1.

[0007] Further, the heating section 5 and the mixing space 4 can be flexibly adjusted in number according to the capacity of the bulk curing barn; a plurality of independently detachable graphene heating modules 9 and partitions 10 are arranged in the heating section 5, the graphene heating modules 9 and the partitions 10 are connected through the plug-in mode, and the place where the graphene heating modules 9 and the partitions 10 are connected with the heat preservation shell 3 is a plug-in connection; the graphene heating modules 9 and the partitions 10 in the heating section 5 are arranged in a cross arrangement, and the graphene heating modules 9 and the partitions 10 in adjacent two heating sections 5 are arranged in a staggered arrangement.

[0008] The graphene heating modules 9 in the heating section 5 are arranged in a cross arrangement along the air flow direction, so as to increase the disturbance of air flow, thereby strengthening the convective heat and increasing the heat exchange coefficient of air and the graphene heating module.

[0009] Further, four groups of detachable graphene heating modules 9 are arranged in each heating section 5, and each group of graphene heating modules 9 comprises a support 901, a metal corrugated plate 902 and a graphene heating sheet 903.

[0010] The support 901 is an aluminum alloy frame structure, and the graphene heating sheet 903 is arranged in the support 901; the inner walls of the left and right sides of the support 901 are attached to the graphene heating sheets 903 at the two sides, and the metal corrugated plate 902 is arranged between the adjacent two graphene heating sheets 903, and the metal corrugated plate 902 is tightly attached to the graphene heating sheet 903 after being sprayed with heat-conducting silica gel on the surface.

[0011] Further, one end of the graphene heating sheet 903 is provided with an electrode 9031, each electrode 9031 is connected in parallel to a wiring terminal 904 and connected with an external power supply, and a waterproof and dustproof protective shell is arranged outside the wiring terminal 904 and a quick plug-in interface 905 is arranged.

[0012] Further, a longitudinal T-shaped clamping groove 301 is arranged on the inner wall of the heat preservation shell 3, and T-shaped clamping blocks 501 matched with the T-shaped clamping groove 301 are arranged at the two ends of the heating section 5; the heating section 5 is disassembled or assembled through the cooperation of the T-shaped clamping blocks 501 and the T-shaped clamping grooves 301; when assembled, the T-shaped clamping blocks 501 of the heating section 5 are pushed into the T-shaped clamping grooves 301.

[0013] Further, an inspection door 11 is arranged on the side of the heat preservation shell 3, and the inspection door 11 is connected with the heat preservation shell 3 through a hinge; a sealing rubber strip is arranged on the edge of the inspection door 11; an observation window 12 is arranged on the inspection door 11, and the observation window 12 is a double-layered tempered glass structure.

[0014] Further, the heat preservation shell 3 is preferably a shell made of stainless steel, and a heat preservation rock wool layer is arranged on the inner wall of the shell.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model discloses a heating section adopts graphene heating module and baffle cross arrangement design, and the heat exchange effect is strengthened, and the air mixing space is through the turbulence effect and strengthens the air disturbance, and makes the air that comes out from different graphene heating module mixes evenly, improves the heat transfer temperature difference of air and graphene heating piece and metal corrugated board, through the cooperation of heating section and mixing space, and makes graphene heating module in heating section along the air flow direction and presents the cross arrangement of fork, increases the turbulence, and strengthens the heat exchange, and graphene heating piece and metal corrugated board cross arrangement make air and metal corrugated board fully contact, increase the heat exchange area and utilize the high thermal conductivity of graphene and metal corrugated board and strengthen the convection heat exchange, improve the heat exchange efficiency,

[0017] 2. Adopt the detachable T type clamping groove structure, and the heating section is through T type clamping block and the quick butt joint of the inner wall clamping groove of heat preservation shell, and the modular design allows the quantity of heating section, mixing space to be adjusted flexibly according to the heat load of intensive curing barn, adapts to the demand of different capacity intensive curing barn, and the fault module can be powered off through the quick plug-in interface, and the maintenance door is opened, and the graphene heating module is replaced individually. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a kind of modular graphene intensive curing barn air heater of heat exchange strengthening structure schematic diagram;

[0019] Figure 2 It is a kind of modular graphene intensive curing barn air heater side view of heat exchange strengthening;

[0020] Figure 3 It is a kind of modular graphene intensive curing barn air heater graphene heating module structure schematic diagram of heat exchange strengthening;

[0021] Figure 4 It is a kind of modular graphene intensive curing barn air heater T type clamping groove, T type clamping block structure schematic diagram of heat exchange strengthening;

[0022] The reference numerals in the drawing represent in turn: 1-inlet pipe, 2-inlet pipe joint, 3-heat preservation shell, 301-T type clamping groove, 4-mixing space, 5-heating section, 501-T type clamping block, 6-outlet pipe joint, 7-air supply fan, 8-outlet pipe, 9-graphene heating module, 901-bracket, 902-metal corrugated board, 903-graphene heating piece, 9031-electrode, 904-wiring terminal, 905-quick plug-in interface, 10-baffle, 11-maintenance door, 12-observation window. DETAILED DESCRIPTION

[0023] The utility model will be further described in connection with the drawings and specific embodiments.

[0024] Example 1: as Figures 1-4As shown in the figure, a modular graphene intensive air heater for heat exchange enhancement of a tobacco curing barn, the overall structure is as shown in the figure Figure 1 As shown, it comprises an air inlet pipe 1, an air inlet pipe joint 2, a heat preservation shell 3, a mixing space 4, a heating section 5, an air outlet pipe joint 6, a supply fan 7, and an air outlet pipe 8.

[0025] A plurality of heating sections 5 are arranged in the heat preservation shell 3 in sequence along the air flow direction, the space surrounded by the adjacent two heating sections 5 and the heat preservation shell 3 is the mixing space 4, the upper part of the heat preservation shell 3 is provided with the air outlet pipe joint 6 for connecting with the air duct inside the barn, the air outlet pipe joint 6 is connected with the supply fan 7, the supply fan 7 is installed in the air outlet pipe 8, the lower part of the heat preservation shell 3 is provided with the air inlet pipe joint 2, and the air inlet pipe joint 2 is connected with the air inlet pipe 1; the heat preservation shell 3 is the external protection and heat preservation structure of the air heater, and the space for air flow and heat exchange is formed inside the heat preservation shell 3, and the heat preservation shell 3 is made of high-temperature-resistant and corrosion-resistant materials.

[0026] During operation, air enters the heat preservation shell 3 from the external air inlet pipe 1, is heated by the heating section 5 and is fully mixed in the mixing space 4, and then is sent into the air outlet pipe by the supply fan 4.

[0027] Further, as shown in the figure Figure 1 The heating section 5 and the mixing space 4 can be flexibly adjusted in number according to the capacity of the intensive barn to adapt to the baking heat load demand of different barns; a plurality of independently detachable graphene heating modules 9 and partitions 10 are arranged in the heating section 5, the graphene heating modules 9 and the partitions 10 are connected by insertion, and the connection between the graphene heating modules 9 and the partitions 10 and the heat preservation shell 3 is also an insertion connection, which can realize quick installation and replacement; the graphene heating modules 9 and the partitions 10 in the heating section 5 are arranged in cross, and the graphene heating modules 9 and the partitions 10 of the adjacent two heating sections 5 are arranged in staggered arrangement, so that the air and the metal corrugated plate are fully contacted to form a turbulent flow, increase the heat exchange area, and enhance the heat exchange, and the metal corrugated plate can be an aluminum corrugated plate.

[0028] Further, as shown in the figure Figure 1 , Figure 3 , Figure 4 Each heating section 5 is provided with four groups of detachable graphene heating modules 9, and each group of graphene heating modules 9 comprises a support 901, a metal corrugated plate 902, and a graphene heating sheet 903.

[0029] The bracket 901 is an aluminum alloy frame structure, graphene heating sheets 903 are installed inside the bracket 901; the inner walls of the left and right sides of the bracket 901 are attached to the graphene heating sheets 903 at the two most sides, a metal corrugated plate 902 is arranged between the adjacent two graphene heating sheets 903, the metal corrugated plate 902 is tightly attached to the graphene heating sheet 903 after being sprayed with heat-conducting silica gel on the surface; the bracket 901 fixes the graphene heating sheet 903 and the metal corrugated plate 902, and forms a wave-shaped channel inside; the corrugated direction of the metal corrugated plate is parallel to the air supply direction.

[0030] Further, a mixing space 4 is arranged to strengthen air disturbance through a turbulent effect, so that the air from different graphene heating modules 9 is mixed uniformly, and the heat transfer temperature difference between the air and the graphene heating sheet 903 and the metal corrugated plate 902 is improved; a bending-shaped air mixing channel is formed between adjacent heating sections, and the heat exchange effect is strengthened.

[0031] Further, one end of the graphene heating sheet 903 is provided with an electrode 9031, each electrode 9031 is connected in parallel to a wiring terminal 904 and connected with an external power supply, the wiring terminal 904 is externally provided with a waterproof and dustproof protective shell and a quick plug-in interface 905.

[0032] Further, a longitudinal T-shaped clamping groove 301 is arranged on the inner wall of the heat preservation shell 3, and a T-shaped clamping block 501 matched with the T-shaped clamping groove 301 is arranged at the two ends of the heating section 5; the heating section 5 is disassembled or installed by cooperation of the T-shaped clamping block 501 and the T-shaped clamping groove 301; when installed, the T-shaped clamping block 501 of the heating section 5 is pushed into along the T-shaped clamping groove 301.

[0033] Further, a maintenance door 11 is arranged on the side of the heat preservation shell 3, the maintenance door 11 is connected with the heat preservation shell 3 through a hinge, the opening angle is 120°, which is convenient for operation; a sealing rubber strip is arranged on the edge of the maintenance door 11; the material of the sealing rubber strip is silicone rubber; an observation window 12 is arranged on the maintenance door 11, the observation window 12 is a double-layer tempered glass structure, and the damaged graphene heating module can be quickly replaced through the maintenance door 11.

[0034] When a single module fails, the maintenance process is: open the maintenance door → disconnect the quick plug-in interface → remove the fixing bolts → take out the failed graphene heating module → install a new module → restore the circuit connection → close the maintenance door → restart.

[0035] Further, the heat preservation shell 3 is preferably a shell made of stainless steel, and a 50mm-thick heat preservation rock wool layer is laid on the inner wall of the shell.

[0036] The utility model discloses a graphene heating piece and metal corrugated plate cross arrangement design, utilize the high thermal conductivity of graphene and metal corrugated plate strengthen convection heat transfer, promote the heat exchange efficiency, according to the heat load of intensive curing barn, the quantity of heating section, mixed section is flexibly increased and decreased, mixed section passes through the turbulence effect and strengthens air disturbance, improves the heat transfer temperature difference of air and graphene heating piece and metal corrugated plate, the heat preservation shell adopts the high temperature -resistant material and is built -in heat preservation rock wool layer, reduces the heat loss, and the heat preservation shell side is equipped with the access door of the observation window, and through T type slot, quick plug -in interface, the replacement of trouble graphene heating module is convenient. The utility model has the advantages such as strengthening heat transfer, high -efficient energy -conserving, modular design and easy maintenance.

[0037] The utility model discloses a specific embodiment of the utility model has been described in detail above in connection with the drawing, but the utility model is not limited to the above -mentioned embodiment, within the knowledge scope of ordinary skill in the art, still can make various changes without departing from the utility model's purpose.

Claims

1. A modular graphene dense drying oven air heater with enhanced heat exchange, characterized in that: The air inlet pipe (1), the air inlet pipe joint (2), the heat preservation shell (3), the mixing space (4), the heating section (5), the air outlet pipe joint (6), the air supply fan (7), and the air outlet pipe (8) are included. The heat preservation shell (3) is provided with a plurality of heating sections (5) in sequence along the air flow direction, and the space surrounded by the adjacent two heating sections (5) and the heat preservation shell (3) is the mixing space (4). The upper part of the heat preservation shell (3) is provided with the air outlet pipe joint (6), the air outlet pipe joint (6) is connected with the air supply fan (7), the air supply fan (7) is installed in the air outlet pipe (8), and the lower part of the heat preservation shell (3) is provided with the air inlet pipe joint (2), and the air inlet pipe joint (2) is connected with the air inlet pipe (1).

2. The modular graphene dense air heater for curing barn according to claim 1, wherein: The heating section (5) and the mixing space (4) can be flexibly adjusted in number according to the capacity of the bulk curing barn. A plurality of independently detachable graphene heating modules (9) and partitions (10) are arranged in the heating section (5), the graphene heating modules (9) and the partitions (10) are connected by plug-in connection, and the connection between the graphene heating modules (9) and the partitions (10) and the heat preservation shell (3) is also plug-in connection. The graphene heating modules (9) and the partitions (10) in the heating section (5) are arranged in a cross arrangement, and the graphene heating modules (9) and the partitions (10) in the adjacent two heating sections (5) are arranged in a staggered arrangement.

3. The modular graphene-dense air heater for curing barns according to claim 1, wherein: A plurality of detachable graphene heating modules (9) are installed in each heating section (5), each group of graphene heating modules (9) includes a support (901), a metal corrugated plate (902), and a graphene heating sheet (903), and the graphene heating modules (9) in the heating section (5) are arranged in a cross arrangement along the air flow direction. The support (901) is an aluminum alloy frame structure, and the graphene heating sheet (903) is installed inside the support (901). The inner walls of the left and right sides of the support (901) are attached to the graphene heating sheets (903) at the two sides, and the metal corrugated plate (902) is arranged between the adjacent two graphene heating sheets (903). The surface of the metal corrugated plate (902) is sprayed with heat-conducting silica gel, and is tightly attached to the graphene heating sheet (903).

4. The modular graphene-dense air heater for curing barns according to claim 3, wherein: One end of the graphene heating sheet (903) is provided with an electrode (9031), each electrode (9031) is connected in parallel to a wiring terminal (904) and connected with an external power supply, and the external power supply is provided with a waterproof and dustproof protective shell and a quick plug-in interface (905).

5. The modular graphene dense air heater for curing barns according to claim 1, wherein: A longitudinal T-shaped clamping groove (301) is arranged on the inner wall of the heat preservation shell (3), and T-shaped clamping blocks (501) matched with the T-shaped clamping groove (301) are arranged at the two ends of the heating section (5). The heating section (5) is disassembled or installed by cooperation of the T-shaped clamping blocks (501) and the T-shaped clamping grooves (301). When installing, the T-shaped clamping blocks (501) of the heating section (5) are pushed into the T-shaped clamping grooves (301).

6. The modular graphene-dense air heater for curing barns of claim 1, wherein: A maintenance door (11) is arranged on the side of the heat preservation shell (3), and the maintenance door (11) is connected with the heat preservation shell (3) through a hinge. A sealing rubber strip is arranged on the edge of the maintenance door (11). An observation window (12) is arranged on the maintenance door (11), and the observation window (12) is a double-layer tempered glass structure.

7. The modular graphene-dense air heater for curing barns of claim 1, wherein: The heat preservation shell (3) is preferably a shell made of stainless steel, and a heat preservation rock wool layer is laid on the inner wall of the shell.

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