CN219368313U - Heat storage double-way pipe and heat supply drying system - Google Patents
Heat storage double-way pipe and heat supply drying system Download PDFInfo
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- CN219368313U CN219368313U CN202320853956.0U CN202320853956U CN219368313U CN 219368313 U CN219368313 U CN 219368313U CN 202320853956 U CN202320853956 U CN 202320853956U CN 219368313 U CN219368313 U CN 219368313U
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Abstract
The utility model discloses a heat storage double-pass pipe and a heat supply drying system, which are designed, wherein the heat storage double-pass pipe comprises a double-pass pipe body, a through hole is formed in the center of the double-pass pipe body, the pipe wall of the double-pass pipe body is divided into an inner wall and an outer wall, and a vacuum layer is arranged between the inner wall and the outer wall; the heat storage material is fixed in the double-way pipe body, so that the heat storage structure does not need to increase the cost again for heat preservation of the heat storage material, and has good heat preservation effect and low loss in the heat storage process; the double-pass pipe with the heat storage function is applied to a drying system, a stop valve and a fresh air valve are arranged before entering a drying bin, so that the temperature of air flow entering the drying bin can be adjusted, and the rear side of the fresh air valve is connected with the drying bin; the rear side of stoving storehouse is provided with waste heat recovery device, realizes the reutilization of the inside discharge heat source in stoving storehouse through waste heat recovery device, avoids the waste of energy.
Description
Technical Field
The utility model belongs to the technical field of solar drying systems, and particularly relates to a heat storage double-way pipe and a heat supply drying system.
Background
In the utilization of solar energy two-way pipe, at present, the more general mode is through solar energy two-way pipe with the air heating of internal circulation, rethread devices such as fan with high temperature gas water conservancy diversion to the heat exchanger in, through heat transfer device with outside liquid heat transfer realization solar energy heat extraction and utilization, the applicant is according to technological improvement, through overcoming the drawback in the prior art, it adopts the heat storage that the mode produced solar collector tube, wait night or the low valley period of heat collection to call, so realize daytime and the compensation of night solar energy collection, this technical scheme has already explained in detail in the patent application of application number 202222580354.0.
However, in the actual development and application process, the following drawbacks of the drying system are found again: 1. because the energy storage device adopts the phase change material to stack or build up, the hot air heats the phase change material to temporarily store heat, and the periphery of the phase change material must be ensured to have good heat preservation in the storage process, so that the aim of preventing heat loss is achieved. When the heat preservation is carried out in a large area or in a large batch, the system assembly or operation cost is increased; 2. the heat insulation performance of the heat insulation mode is poor; 3. therefore, the heat preservation module formed by the phase change materials is arranged outside the heat collection tube, heat is dissipated or reduced in the heat collection and transportation process, and the phase change materials cannot be heated most efficiently and directly in the mode.
Summarizing the drawbacks above, the purpose of this patent application is through designing the heat-retaining double-pass pipe of a novel structure, and it can be comparatively direct heat phase change material, can keep comparatively stable heat preservation effect after heating, reduces the heat loss when heat-retaining low ebb to can be applied to this heat-retaining double-pass pipe in heat supply drying system.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model proposes a heat storage double-pass pipe and a heat supply drying system, which directly collect heat from a heat storage material by arranging the heat storage material inside the double-pass pipe, and realize stable heat storage by means of good heat preservation performance of the double-pass pipe, and effectively extract and apply temperature when storing heat in low-valley.
The technical scheme adopted for solving the technical problems is as follows:
the heat storage double-way pipe comprises a double-way pipe body, wherein a through hole is formed in the center of the double-way pipe body, the pipe wall of the double-way pipe body is divided into an inner wall and an outer wall, the inner wall and the outer wall are integrally arranged, and a vacuum layer is arranged between the inner wall and the outer wall; the inner part of the double-way pipe body is provided with a reducing area and a straight-edge section, and a heat storage material is fixed in the straight-edge section. The heat storage material is a rod-shaped heat storage rod which is fixed in the straight-edge section through a support frame; the heat storage material is inserted into the straight edge section and passes through the straight edge section front and back.
The heat storage rod is fixed inside the straight edge section through the spring support frame, the spring support frame is in spiral reducing arrangement, the small diameter of the spring support frame is clamped and fixed with the heat storage rod, and the large diameter of the spring support frame is clamped and fixed with the inner wall.
The heat storage rod comprises a rod body shell and an inner cavity, a phase change material is arranged in the inner cavity, and two ends of the inner cavity are plugged through end plugs.
A heat supply drying system comprises a solar hot air collector group, wherein the solar hot air collector group is connected with one or a plurality of drying bin modules through pipelines; the rear side of the drying bin module is provided with a waste heat recovery device which is connected with one side of the air inlet of the solar hot air collector group.
The head end and the tail end of the solar hot air collector group are connected with a bypass pipe, and a bypass valve is arranged on the bypass pipe.
An external heat supply port is arranged at the air inlet end of the drying bin.
The waste heat recovery device is connected with four pipelines, one of which is connected with the drying bin module, the other of which is connected with the fresh air compensation pipe, the other of which is connected with the low-temperature wet air discharge pipe, and the other of which is connected with the air inlet of the solar hot air collector set.
The rear side of the drying bin module is connected with an air inlet of the solar hot air collector group through a return pipeline, and a valve is arranged on the return pipeline.
The utility model has the following beneficial effects: through the design, the utility model designs the double-pass pipe with the heat storage function, the heat storage material is arranged in the pipe cavity of the double-pass pipe, the fixation of the heat storage material is realized on the premise that the two ends of the double-pass pipe are transparent, the direct heating and heat preservation of the heat storage material can be realized by means of the good heat absorption performance and the heat preservation performance of the double-pass pipe, the cost is not required to be increased again for heat preservation of the heat storage material, the heat preservation effect is good, and the heat storage process loss is low; the double-pass pipe with the heat storage function is applied to a drying system, a stop valve and a fresh air valve are arranged before entering a drying bin, so that the temperature of air flow entering the drying bin can be adjusted, and the rear side of the fresh air valve is connected with the drying bin; the rear side of stoving storehouse is provided with waste heat recovery device, realizes the reutilization of the inside discharge heat source in stoving storehouse through waste heat recovery device, avoids the waste of energy. The rear side of the waste heat recovery device is connected with one side of the air inlet of the solar hot air collector group, and the connection mode can realize the full utilization of a heat source.
The system has novel structure, overcomes various technical defects in the prior art, can realize effective storage and multiple full utilization of heat energy, can realize energy storage and conversion as efficiently as possible, reduces heat energy loss to the minimum, and maximizes heat energy utilization.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic perspective view of a double-pass tube according to the present utility model;
FIG. 2 is a schematic view of the internal cross-sectional structure of the two-way pipe of the present utility model;
FIG. 3 is a schematic view of the internal cross-sectional structure of a heat storage rod;
FIG. 4 is a schematic diagram of a heating and drying system using the heat storage double-way pipe;
in the figure, 1, a solar hot air collector group, 11, a header, 2, a fan, 3, a return pipeline, 31, a return air electric air valve, 4, a bypass pipe, 41, a bypass valve, 5, a heat storage double-way pipe, 51, a reducing area, 52, an outer wall, 53, an inner wall, 54, a vacuum layer, 55, a through hole, 56, a spring support frame, 561, a large-diameter front end, 562, a small-diameter end, 563, a large-diameter rear end, 57, a straight edge section, 6, a drying bin module, 61, a stop valve, 62, a fresh air valve, 63, an external heat supply port, 7, a drying bin, 71, a drying bin fan, 8, a waste heat recovery device, 81, a fresh air compensation pipe, 82, a low-temperature wet air discharge pipe, 83, a drying bin connecting pipe, 84, a return air pipe, 9, a heat storage rod, 91, a shell, 92, a phase change material, 93 and an end plug.
Detailed Description
The utility model is further described below by means of embodiments,
example 1:
the heat storage double-way pipe 5 comprises a double-way pipe body, as shown in fig. 1, 2 and 3, wherein a through hole 55 is formed in the center of the double-way pipe body, the pipe wall of the double-way pipe body is divided into an inner wall 53 and an outer wall 52, the inner wall 53 and the outer wall 52 are integrally formed, and a vacuum layer 54 is arranged between the inner wall 53 and the outer wall 52; the inner part of the double-way pipe body is provided with a reducing area 51 and a straight edge section 57, and the technical point of the utility model is that a heat storage material is fixed in the straight edge section 57.
The heat storage material is a rod-shaped heat storage rod 9 which is fixed in the straight-edge section through a support frame; since the principle of the double-pass tube arrangement absorbs heat through the inner wall 53 and the outer wall 52 coated or covered with the heat absorbing material, the gas flowing through the through hole 55 is heated by the absorbed heat, so that the through hole 55 is kept transparent, which is the technical problem to be solved first by the present technical scheme. To achieve the above technical purpose, the present utility model must ensure that the heat storage rod 9 is inserted into the straight section 57 and the straight section 57 is penetrated back and forth. The heat storage rod 9 is fixed inside the straight section 57 through the spring support frame 56, the spring support frame 56 is in a variable diameter arrangement, as shown in fig. 2, the spring support frame 56 with a variable diameter design comprises a large diameter front end 561, a small diameter end 562 and a large diameter rear end 563, the inner wall 53 is clamped through the large diameter front end 561 and the large diameter rear end 563, and the outer diameter of the heat storage rod 9 is clamped through the small diameter end 562. After the above fixing structure is set, the heat storage rod 9 can be ensured to shake in the through hole 55 and the normal circulation of the gas in the through hole 55 can be maintained.
The above structural design has the advantages that: the heat-insulating double-way pipe 5 can realize direct heating and heat insulation of the heat-insulating material by means of good heat-insulating property and heat-insulating property, the structure does not need to increase the cost again for heat insulation of the heat-insulating material, the heat-insulating effect is good, and the heat-insulating loss is low in the heat-insulating process.
Furthermore, the heat storage rod 9 of the utility model is provided with a multi-layer structure and comprises a rod body shell 91 and an inner cavity, wherein a phase change material 92 is arranged in the inner cavity, both ends of the inner cavity are plugged by end plugs 93, the end plugs 93 are preferably connected by screw threads when fixed, and the screw threads can prevent the defects of loosening and the like caused by thermal expansion during plugging. The rod body shell 91 and the end plugs 93 are made of copper or aluminum, and heat storage and heat dissipation efficiency of the heat storage rod 9 is improved through good heat conduction efficiency. The phase change material 92 is Na2CO3-BaCO3/MgO or Na2SO4/SiO2; since the thermal phase transition potential and specific heat capacity of Na2SO4/SiO2 are higher than those of Na2CO3-BaCO3/MgO, na2SO4/SiO2 is preferably used in this embodiment.
Example 2:
a heat supply and drying system adopting the heat storage double-pass pipe according to the embodiment 1 is shown in fig. 4, and comprises a solar hot air collector group 1, wherein a plurality of headers 11 are arranged in the solar hot air collector group 1, a plurality of heat storage double-pass pipes 5 are inserted between the headers 11, and the heat storage double-pass pipes 5 are communicated with the headers 11 to form a solar heating group.
The solar hot air collector group 1 is connected with a drying bin module 6 at the rear side through a pipeline, a stop valve 61 and a fresh air valve 62 are arranged in the drying bin module 6 before entering the drying bin 7, the stop valve 61 is used for controlling the entering of external hot air, and the opening of the fresh air valve 62 can be used for adjusting the air flow temperature entering the drying bin; the rear side of the fresh air valve 62 is connected with a drying bin 7, and materials in the drying bin 7 can be dried through hot air; because the temperature of the air flow discharged from the drying bin 7 is above 100 ℃, the direct discharge can cause energy waste, the device is provided with a waste heat recovery device 8 at the rear side of the drying bin 7, the waste heat recovery device 8 is connected with four pipelines, one is a drying bin connecting pipe 83, which is connected with the drying bin 7, one is connected with a fresh air compensation pipe 81, one is connected with a low-temperature wet air discharge pipe 82, and the other is connected with a solar hot air collector group air inlet through an air return pipe 84. Due to the fact that water drops and water vapor are doped in the air flow discharged from the drying bin 7, the effects of eliminating the water drops, eliminating the water vapor and recovering heat are achieved through the waste heat recovery device 8. The waste heat recovery device 8 can adopt a shell-and-tube heat exchanger, which supplies heat to the inside through a return air pipe 84, a fresh air compensation pipe 81 is used for compensating the outside air, reducing the water drops and the water vapor content in the heat flow, and the cooled and dehumidified air flow is discharged to the outside through a low-temperature humid air discharge pipe 82.
The device is the same with prior art, and this device sets up humidity detection device in stoving storehouse 7 exit, and humidity detection device is connected with external control ware, can the switch of direct control return air electric air valve 31 through external control ware, simultaneously, this device is connected through return line 3 with the air intake department of solar energy hot air collector group 1 in stoving storehouse module rear side, return line 3 on be provided with return air electric air valve 31.
Under the condition that the drying bin 7 can accept humidity, the air inlet temperature of the air inlet of the solar hot air collector group 1 can be improved by opening the air return electric air valve 31, and the control principle is as follows: the switch amplitude of the return air electric air valve 31 is divided into three gears, namely, 50% of the switch is closed, 50% of the switch is opened and the switch is fully opened. If the humidity of the material, the exhaust humidity of the oven, is less than 15%, the return air valve is fully opened, and the air exhausted by the oven is fully returned to the drying system to continuously dry the material; if the material humidity-oven exhaust humidity is more than or equal to 15% and less than 40%, the return air valve is opened by 50%, and part of return air returns to the system to dry the material; if the material humidity-oven exhaust humidity is greater than or equal to 40%, the return air valve is closed, and all air exhausted by the drying equipment is exhausted outdoors.
Furthermore, the device is connected with a bypass pipe 4 at the head end and the tail end of the solar hot air collector group 1, and a bypass valve 41 is arranged on the bypass pipe, so that the bypass valve 41 can be opened to realize no-load circulation in a non-working state.
The system is also connected with an external heat supply port 63 at the air inlet end of the drying bin 7, and the setting purpose is as follows: when the weather is bad, the external heat supply mode is used for complementing the material drying operation.
The system has novel structure, can realize multiple full utilization of heat energy, can realize energy storage and conversion as much as possible, reduces energy loss, and can maximize the heat energy utilization rate on the basis of the prior art, thereby being an ideal heat storage double-way pipe and a heat supply drying system.
Claims (9)
1. The utility model provides a heat-retaining two-way pipe which characterized in that: the pipe wall of the double-pass pipe body is divided into an inner wall and an outer wall, and a vacuum layer is arranged between the inner wall and the outer wall; the heat storage material is fixed in the double-way pipe body.
2. A heat storage double-pass pipe as claimed in claim 1, wherein: the heat storage material is a rod-shaped heat storage rod which is fixed in the straight-edge section through a support frame; the heat storage material is inserted into the double-pass pipe body and the inside of the double-pass pipe body is transparent front and back.
3. A heat storage double-pass pipe as claimed in claim 2, wherein: the heat storage rod is fixed in the straight-edge section through a spring support frame.
4. A heat storage double-pass pipe as claimed in claim 3, wherein: the spring support frame is in spiral reducing arrangement, the small diameter of the spring support frame is clamped and fixed with the heat storage rod, and the large diameter of the spring support frame is clamped and fixed with the inner wall.
5. A heat storage double-pass pipe as claimed in claim 2, wherein: the heat storage rod comprises a rod body shell and an inner cavity, a phase change material is arranged in the inner cavity, and two ends of the inner cavity are plugged through end plugs.
6. A heating and drying system using the heat storage double-pass pipe as claimed in claim 1 or 2, characterized in that: the solar hot air collector comprises a solar hot air collector group, wherein a plurality of double-way pipes are inserted into the solar hot air collector group; the solar hot air collector group is connected with one or a plurality of drying bin modules through pipelines; the rear side of the drying bin module is provided with a waste heat recovery device which is connected with one side of the air inlet of the solar hot air collector group.
7. A heating and drying system as set forth in claim 6, wherein: the head end and the tail end of the solar hot air collector group are connected with a bypass pipe, and a bypass valve is arranged on the bypass pipe.
8. A heating and drying system as set forth in claim 6, wherein: the waste heat recovery device is connected with four pipelines, one of which is connected with the drying bin module, the other of which is connected with the fresh air compensation pipe, the other of which is connected with the low-temperature wet air discharge pipe, and the other of which is connected with the air inlet of the solar hot air collector set.
9. A heating and drying system as claimed in claim 8, wherein: the rear side of the drying bin module is connected with an air inlet of the solar hot air collector group through a return pipeline, and a valve is arranged on the return pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320853956.0U CN219368313U (en) | 2023-04-17 | 2023-04-17 | Heat storage double-way pipe and heat supply drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320853956.0U CN219368313U (en) | 2023-04-17 | 2023-04-17 | Heat storage double-way pipe and heat supply drying system |
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| Publication Number | Publication Date |
|---|---|
| CN219368313U true CN219368313U (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320853956.0U Active CN219368313U (en) | 2023-04-17 | 2023-04-17 | Heat storage double-way pipe and heat supply drying system |
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| Country | Link |
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| CN (1) | CN219368313U (en) |
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- 2023-04-17 CN CN202320853956.0U patent/CN219368313U/en active Active
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