A mechanical antifreeze type large flat plate heat collecting device

Abstract

The present invention discloses a mechanical antifreeze type large flat plate heat collecting device, which relates to the technical field of heat collecting devices, including a heat header, wherein the left and right sides of the heat header are respectively fixedly connected with fixed plates, the lower side of the fixed plate is fixedly connected with a heat collecting box, the interior of the heat collecting box is fixedly connected with two copper main channels and fourteen copper branch channels, the copper branch channels are all connected with the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are both fixedly connected with silicone connecting sleeves, the upper side of the silicone connecting sleeve is also provided with a first connecting port and a second connecting port, the first connecting port is fixedly connected with a liquid passing pipe and the liquid passing pipe runs through the heat header, an antifreeze core is provided, one end of which is in communication with the atmosphere and can be freely retracted and retracted, thereby effectively avoiding fatigue cracking of the copper main channel and the copper branch channels due to excessive expansion times or excessive internal pressure, thereby achieving good antifreeze and anti-cracking effects.

Description

Technical Field

[0001] The invention relates to the technical field of heat collecting equipment, in particular to a mechanical antifreeze type large flat plate heat collecting equipment. Background Art

[0002] The flat-plate solar collector equipment is made of all-copper material, and the heat-absorbing coating adopts blue plating and black chrome technology. Each square of solar collector plate can replace 150kg of coal, which is equivalent to 147 degrees of electricity. The collected water volume per square is about 80kg above 50℃. It adopts double circulation, is not easy to scale, can discharge sewage, will not burst pipes, and is not afraid of hail. The outer cover adopts a tempered glass protective layer, can withstand pressure, and is welded between metal pipes with a service life of more than 30 years.

[0003] However, for existing flat-plate solar collectors, when the ambient temperature drops below zero, the water in the pipes stops flowing and begins to turn into a mixture of ice, water, and air. The volume of this mixture is about 11% larger than the volume of water. It will cause the space in the pipe to expand to a certain extent, thereby causing the pipe to crack and damage the flat-plate solar collector. Therefore, it is necessary to design a flat-plate solar collector with good antifreeze properties and high safety. Summary of the invention

[0004] The object of the present invention is to provide a mechanical antifreeze type large flat plate heat collecting device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a mechanical antifreeze type large flat plate heat collecting device, comprising a heat header, the left and right sides of the heat header are respectively fixedly connected with fixed plates, the lower side of the fixed plate is fixedly connected with a heat collecting box, the interior of the heat collecting box is fixedly connected with two copper main channels and fourteen copper branch channels, the copper branch channels are all connected to the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are fixedly connected with silicone connecting sleeves, the silicone connecting sleeves are fixedly connected with the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are fixedly connected with the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are fixedly connected with the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are fixedly connected with the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are fixedly connected with the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are fixedly connected with the copper main channel pipeline, the upper sides of the copper branch channels and the copper main channel are fixedly connected with the copper main channel pipeline, the upper sides of the copper main channel ... A first connection port and a second connection port are also provided on the upper side, the first connection port is fixedly connected to a liquid pipe and the liquid pipe passes through the hot junction box, the second connection port is hinged to a dust filter cover, a dust filter net is provided inside the dust filter cover, an antifreeze core is provided inside the copper branch channel and the copper main channel, one end of the antifreeze core is fixedly connected to the dust filter net and communicates with the atmosphere, and the other end of the antifreeze core is in a closed state, a water storage cavity is provided between the copper branch channel, the copper main channel and the antifreeze core, and an air storage cavity is provided inside the antifreeze core.

[0006] The height of the liquid passage pipe on the upper side of the copper main flow channel is flush with the lower wall inside the heat header, and the height of the liquid passage pipe on the upper side of the copper branch flow channel exceeds the lower wall inside the heat header.

[0007] A vent is provided on the upper front side of the thermal header, a liquid inlet pipe is fixedly connected to the left side of the thermal header, and a liquid outlet pipe is fixedly connected to the right side of the thermal header.

[0008] The antifreeze core is made of silica gel, and a cross reinforcement rib is arranged inside the antifreeze core.

[0009] The inner wall of the heat header is provided with heat-insulating material, a temperature sensor is fixedly connected to the inside of the heat header, a pressure sensor is fixedly connected to the outside of each of the copper branch channel and the copper main channel, and the receiving end of each of the pressure sensors passes through the dust filter cover and extends into the antifreeze core.

[0010] A control box is fixedly connected to the upper side of the heat header, a blower is fixedly connected to the front side of the heat header, sixteen air outlets are provided on the lower side of the blower, a solenoid valve is fixedly connected to the lower side of each air outlet, an air outlet pipe is fixedly connected to the lower side of the solenoid valve, and the output end of the air outlet pipe is aligned with the dust filter.

[0011] The control box is provided with a control module, an alarm module and a detection module inside, and the control module, the alarm module and the detection module are connected to each other by signals.

[0012] The control module is connected to the blower and the solenoid valve signals, and the detection module is connected to the pressure sensor and the temperature sensor signals.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are: by providing an antifreeze core, one end of which is in communication with the atmosphere and can be freely retracted and released, the main copper channel and the branch copper channel are effectively prevented from fatigue cracking due to excessive expansion times or excessive internal pressure, thereby achieving good antifreeze and anti-cracking effects;

[0014] By equipping a pressure sensor and a temperature sensor to detect the pressure value inside the antifreeze core at different temperatures, it is possible to determine whether the antifreeze core is squeezed or restored to its original state, and then to determine whether the antifreeze core is damaged, thereby quickly reminding personnel to replace the damaged antifreeze core in time, thereby achieving the effect of timely replacement of the antifreeze core. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a half-section schematic diagram of the present invention;

[0017] Figure 2 The present invention Figure 1 An enlarged schematic diagram of region A;

[0018] Figure 3 The present invention Figure 1 An enlarged schematic diagram of region B;

[0019] Figure 4 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 5 The present invention Figure 4 An enlarged schematic diagram of region C;

[0021] In the figure: 1. Control box; 2. Blower; 3. Solenoid valve; 4. Air outlet pipe; 5. Heat header; 6. Vent; 7. Liquid outlet pipe; 8. Fixing plate; 9. Liquid inlet pipe; 10. Collector box; 11. Copper main channel; 12. Copper branch channel; 13. Liquid pipe; 14. Silicone connecting sleeve; 15. Dust filter cover; 16. Pressure sensor; 17. Antifreeze core. DETAILED DESCRIPTION

[0022] The following is a further non-limiting detailed description of the technical solution of the present invention in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-5 The present invention provides a technical solution: a mechanical antifreeze type large flat plate heat collecting device, comprising a heat header 5, the left and right sides of the heat header 5 are respectively fixedly connected with a fixing plate 8, the lower side of the fixing plate 8 is fixedly connected with a heat collecting box 10, the inside of the heat collecting box 10 is fixedly connected with two copper main channels 11 and fourteen copper branch channels 12, the copper branch channels 12 are all connected with the copper main channel 11 pipeline, the upper sides of the copper branch channels 12 and the copper main channel 11 are fixedly connected with a silicone connecting sleeve 14, and the upper side of the silicone connecting sleeve 14 is also provided with a There are a first connection port and a second connection port, the first connection port is fixedly connected with a liquid pipe 13 and the liquid pipe 13 passes through the hot header 5, the second connection port is hinged with a dust filter cover 15, the dust filter cover 15 is provided with a dust filter net inside, the copper branch channel 12 and the copper main channel 11 are both provided with an antifreeze core 17, one end of the antifreeze core 17 is fixedly connected to the dust filter net and communicates with the atmosphere, and the other end of the antifreeze core 17 is in a closed state, a water storage cavity is provided between the copper branch channel 12, the copper main channel 11 and the antifreeze core 17, and an air storage cavity is provided inside the antifreeze core 17.

[0024] The height of the liquid pipe 13 on the upper side of the copper main channel 11 is flush with the lower wall inside the heat header 5 , and the height of the liquid pipe 13 on the upper side of the copper branch channel 12 exceeds the lower wall inside the heat header 5 .

[0025] A vent 6 is provided on the upper front side of the thermal header 5 , a liquid inlet pipe 9 is fixedly connected to the left side of the thermal header 5 , and a liquid outlet pipe 7 is fixedly connected to the right side of the thermal header 5 .

[0026] The antifreeze core 17 is made of silica gel, and a cross reinforcement rib is arranged inside the antifreeze core 17 .

[0027] Specifically, the interior of the hot header 5 is used to store water, the copper main channel 11 and the copper branch channel 12 are used to guide the water to flow, so as to complete the circulating heating of the water inside the equipment, the silicone antifreeze core 17 adopts an opening at one end to communicate with the atmosphere and can be better retracted and released freely, the antifreeze core 17 is designed to be able to be pulled out or inserted through the three-way opening for easy replacement later, avoiding the problem that the entire module cannot be used for antifreeze due to the aging of the antifreeze core 17 and the inability to replace it over time, the cross reinforcement ribs increase the supporting force of the hollow part of the silicone antifreeze core 17, avoiding the antifreeze core 17 from maintaining sufficient compression space before freezing, the antifreeze core 17 can be taken out and replaced in time by opening the dust filter cover 15, and the dust filter net is used to prevent dust from entering the interior of the antifreeze core 17.

[0028] The inner wall of the heat header 5 is provided with heat-insulating material, a temperature sensor is fixedly connected inside the heat header 5, a pressure sensor 16 is fixedly connected to the outside of each copper branch channel 12 and the copper main channel 11, and the receiving end of each pressure sensor 16 passes through the dust filter cover 15 and extends into the antifreeze core.

[0029] The specific heat insulating material will insulate the water source inside the thermal header 5 .

[0030] A control box 1 is fixedly connected to the upper side of the heat header 5, a blower 2 is fixedly connected to the front side of the heat header 5, sixteen air outlets are provided on the lower side of the blower 2, a solenoid valve 3 is fixedly connected to the lower side of each air outlet, an air outlet pipe 4 is fixedly connected to the lower side of the solenoid valve 3, and the output end of the air outlet pipe 4 is aligned with the dust filter.

[0031] Specifically, the blower 2 is used to generate airflow through the rotation of the impeller, thereby achieving gas compression and transportation, and transmitting the gas to sixteen air outlets. When one of the solenoid valves 3 is opened, the gas will be ejected from the outlet pipe 4 connected to this solenoid valve 3.

[0032] A control module, an alarm module and a detection module are arranged inside the control box 1, and the control module, the alarm module and the detection module are connected to each other by signals.

[0033] The control module is connected to the blower 2 and the solenoid valve 3 by signals, and the detection module is connected to the pressure sensor 16 and the temperature sensor by signals.

[0034] Specifically, the pressure sensor 16 is used to detect the pressure value inside the antifreeze core 17, and convert the pressure value into an electrical signal and send it to the control box 1. The temperature sensor is used to detect the temperature value of the water source inside the thermal junction box 5, and convert the temperature value into an electrical signal and send it to the control box 1.

[0035] The following steps are involved:

[0036] S1: A person adds water from the liquid inlet pipe 9 into the hot header 5;

[0037] S2: When the temperature is higher than 0 degrees, the liquid is heated by solar radiation through the copper main channel 11 and the copper branch channel 12. When the temperature is lower than 0 degrees, the antifreeze core 17 is compressed and contracted, thereby exhausting the internal air to protect the pipeline;

[0038] Specifically, under normal temperature conditions, the cold water inside the heat header 5 flows into the copper main channel 11 due to gravity, and then flows into each copper branch channel 12 in turn. After the heat transfer by solar radiation, the water temperature rises rapidly. Due to the difference in density between cold and hot water, a thermal siphon phenomenon is formed, and the water floats upward and flows from the upper end of the copper branch channel 12 into the heat header 5. At this time, the water inside the header is also cold at the bottom due to the difference in density between cold and hot water, and then enters the copper main channel again due to gravity. The water temperature in the heat header 5 will increase continuously by repeating the cycle. When the ambient temperature drops below zero, the water in the heat header 5 stops flowing and begins to freeze. At this time, pressure will be generated in the closed copper main channel 11 and the copper branch channel 12. This pressure will squeeze around. Since the copper main channel 11 and the copper branch channel 12 are made of metal, they can withstand pressures below 2.0 MPA. At this time, the pressure will be guided by the inner walls of the copper main channel 11 and the copper branch channel 12 to squeeze toward the antifreeze core 17. After being subjected to pressure, the antifreeze core 17 will shrink and squeeze out the internal air into the external atmosphere. The designed emptying force and shrinkage amount can just absorb the expanded part of this mixture. When the ambient temperature exceeds 0 degrees, the ice melts as the temperature rises, and the volume slowly shrinks. The pressure in the copper main channel 11 and the copper branch channel 12 disappears, and the antifreeze core 17 slowly and automatically recovers its original shape due to the tension of the structure. The water begins to flow, and the water in the channel resumes normal flow, thereby ensuring that the metal channel will not be damaged due to the expansion force. There is an air vent 6 connected to the atmosphere. The air vent 6 has the function of ventilation and is arranged at a position of two-thirds of the height of the heat header 5. In this way, the water level inside the heat header 5 will not be full, and space for water to freeze and expand is reserved, thereby ensuring that the heat header 5 will not explode when the water freezes. An antifreeze core 17 is provided, one end of which is connected to the atmosphere and can be freely retracted, effectively avoiding fatigue cracking of the copper main channel 11 and the copper branch channel 12 due to excessive expansion times or excessive internal pressure, thereby achieving good antifreeze and anti-cracking effects.

[0039] S3: Determine whether the antifreeze core is damaged by the pressure sensor 16 and the temperature sensor, and promptly alarm to remind personnel to replace it if it is damaged.

[0040] Specifically, after the water source inside the copper main channel 11 and the copper branch channel 12 is completely frozen, the antifreeze core 17 is squeezed. After the antifreeze core 17 is under pressure, it will shrink and squeeze out the internal air into the external atmosphere. At this time, the internal pressure sensor 16 is squeezed by the antifreeze core 17, so as to detect the pressure value. Assuming that the pressure value detected by the pressure sensor 16 is q, when q>0, it means that the temperature is less than 0 degrees at this time, and the water source inside the copper main channel 11 and the copper branch channel 12 has been completely frozen. At this time, the antifreeze core 17 is squeezed and deformed by the ice. When q=0, it means that the temperature is greater than 0 degrees, the water inside the copper main channel 11 and the copper branch channel 12 changes from ice to liquid, and the antifreeze core 17 is no longer squeezed and restored to its original state. The pressure sensor 16 detects the pressure while the temperature sensor is also detecting the water temperature inside the hot header 5. When the temperature sensor detects that the temperature inside the hot header 5 is greater than 0 degrees, and the pressure sensor 16 detects that q>0, the control box 1 determines that the antifreeze core 17 is damaged and cannot be restored to its original state. The control box 1 controls the blower 2 to open, and the solenoid valve 3 is opened. Open, the air outlet pipe 4 blows air into the antifreeze core 17 to assist it to restore to its original state. When the temperature sensor still detects that the temperature inside the hot header 5 is greater than 0 degrees, and the pressure sensor 16 detects that q>0, the alarm module is started and a sound is emitted to remind personnel to replace the antifreeze core 17 in time. Conversely, after blowing, when the temperature sensor detects that the temperature inside the hot header 5 is greater than 0 degrees, and the pressure sensor 16 detects that q=0, the alarm module is closed, and the antifreeze core 17 does not need to be replaced. When the temperature sensor detects that the temperature inside the hot header 5 is less than 0 degrees, and the pressure sensor 16 detects that q=0, it means that the pressure sensor 16 or the antifreeze core 17 is damaged at this time. The alarm module is started and a sound is emitted to remind personnel to come and check. By providing the pressure sensor 16 and the temperature sensor, the pressure value inside the antifreeze core 17 at different temperatures is detected to determine whether the antifreeze core 17 is squeezed or restored to its original state, thereby determining whether the antifreeze core 17 is damaged, thereby quickly reminding personnel to replace the damaged antifreeze core 17 in time, thereby achieving the effect of timely replacing the antifreeze core 17.

[0041] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0042] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mechanical antifreeze type large flat plate heat collection device, Features: The invention comprises a heat header (5), wherein the left and right sides of the heat header (5) are respectively fixedly connected to fixing plates (8), the lower side of the fixing plates (8) is fixedly connected to a heat collecting box (10), the interior of the heat collecting box (10) is fixedly connected to two copper main channels (11) and fourteen copper branch channels (12), the copper branch channels (12) are all connected to the copper main channel (11) by pipes, the upper sides of the copper branch channels (12) and the copper main channel (11) are both fixedly connected to a silicone connecting sleeve (14), the upper side of the silicone connecting sleeve (14) is also provided with a first connecting port and a second connecting port, the first connecting port is connected to the upper side of the silicone connecting sleeve (14), and the second connecting port is connected to the upper side of the silicone connecting sleeve (14). A connecting port is fixedly connected to a liquid pipe (13) and the liquid pipe (13) passes through the heat header (5); a dust filter cover (15) is hingedly connected to the second connecting port; a dust filter net is provided inside the dust filter cover (15); an antifreeze core (17) is provided inside the copper branch channel (12) and the copper main channel (11); one end of the antifreeze core (17) is fixedly connected to the dust filter net and communicates with the atmosphere; the other end of the antifreeze core (17) is in a closed state; a water storage cavity is provided between the copper branch channel (12), the copper main channel (11) and the antifreeze core (17); and an air storage cavity is provided inside the antifreeze core (17); The height of the liquid passage (13) on the upper side of the copper main channel (11) is flush with the lower wall inside the heat header (5), and the height of the liquid passage (13) on the upper side of the copper branch channel (12) exceeds the lower wall inside the heat header (5); A vent (6) is provided on the upper front side of the thermal header (5); a liquid inlet pipe (9) is fixedly connected to the left side of the thermal header (5); and a liquid outlet pipe (7) is fixedly connected to the right side of the thermal header (5); The antifreeze core (17) is made of silica gel, and a cross reinforcement rib is provided inside the antifreeze core (17); The inner wall of the heat header (5) is provided with heat insulation material, the interior of the heat header (5) is fixedly connected with a temperature sensor, the outer side of each of the copper branch channel (12) and the copper main channel (11) is fixedly connected with a pressure sensor (16), and the receiving end of each of the pressure sensors (16) passes through the dust filter cover (15) and extends into the interior of the antifreeze core; The upper side of the heat header (5) is fixedly connected to a control box (1), the front side of the heat header (5) is fixedly connected to a blower (2), the lower side of the blower (2) is provided with sixteen air outlets, the lower side of each air outlet is fixedly connected to a solenoid valve (3), the lower side of the solenoid valve (3) is fixedly connected to an air outlet pipe (4), and the output end of the air outlet pipe (4) is aligned with the dust filter; The control box (1) is provided with a control module, an alarm module and a detection module inside. The control module, the alarm module and the detection module are connected to each other by signals. The control module is connected to the blower (2) and the solenoid valve (3) by signals. The detection module is connected to the pressure sensor (16) and the temperature sensor by signals.

2. A method for using a mechanical antifreeze type large flat panel solar collector according to claim 1, Features: The following steps are involved: S1: A person adds water from the liquid inlet pipe (9) into the hot header (5); S2: When the temperature is higher than 0 degrees, the liquid is heated by solar radiation through the copper main channel (11) and the copper branch channel (12). When the temperature is lower than 0 degrees, the antifreeze core (17) is compressed and contracted, thereby expelling the internal air to protect the pipeline; S3: Determine whether the antifreeze core is damaged by using the pressure sensor (16) and the temperature sensor, and promptly alarm to remind personnel to replace it if it is damaged.

3. A method for using a mechanical antifreeze type large flat plate heat collecting device according to claim 2, Features: The pressure sensor (16) is squeezed by the antifreeze core (17). Assume that the pressure value detected by the pressure sensor (16) is q. When q>0, it means that the temperature is less than 0 degrees at this time, and the water source inside the copper main channel (11) and the copper branch channel (12) has been completely frozen. The antifreeze core (17) is squeezed and deformed by the ice. When q=0, it means that the temperature is greater than 0 degrees at this time, and the water source inside the copper main channel (11) and the copper branch channel (12) changes from ice to liquid. The antifreeze core (17) is no longer squeezed and returns to its original state. While the pressure sensor (16) detects the pressure, the temperature sensor also detects the water temperature inside the heat header (5); When the temperature sensor detects that the temperature inside the heat junction box (5) is greater than 0 degrees, and the pressure sensor (16) detects that q>0, the control box (1) determines that the antifreeze core (17) is damaged and cannot be restored to its original state, and the control box (1) controls the blower (2) to open, the solenoid valve (3) to open, and the air outlet pipe (4) to blow air into the antifreeze core (17) to assist in restoring the antifreeze core (17) to its original state; When the temperature sensor still detects that the temperature inside the hot header (5) is greater than 0 degrees, and the pressure sensor (16) detects that q>0, the alarm module is activated and emits a sound to remind personnel to replace the antifreeze core (17) in time; conversely, after blowing, when the temperature sensor detects that the temperature inside the hot header (5) is greater than 0 degrees, and the pressure sensor (16) detects that q=0, the alarm module is turned off and the antifreeze core (17) does not need to be replaced; When the temperature sensor detects that the temperature inside the hot junction box (5) is less than 0 degrees, and the pressure sensor (16) detects that q=0, it means that the pressure sensor (16) or the antifreeze core (17) is damaged, and the alarm module is activated to emit a sound to remind personnel to come and check.

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