CN101818941B - Air heated anti-freezing solar energy collector system - Google Patents

Abstract

The invention discloses an air heated anti-freezing solar energy collector system, relating to an anti-freezing solar energy collector system. The system aims at the problems that water is remained extremely easily in an exhaust and evacuation system to cause the frost cracking of valves and pipelines, relatively low temperature makes a circulating working medium solidified to cause the frost cracking of the pipelines and the antifreeze liquid system has large initial cost and easily causes environment pollution. A temperature sensor is mounted on a circulating working medium inlet pipe between an electric disconnecting valve and a solar energy collector; the upper end of a first communicating pipe is communicated with the circulating working medium inlet pipe; the lower end of the first communicating pipe is communicated with the inlet end of a wind power heater; the upper end of a second communicating pipe is communicated with a circulating working medium outlet pipe; the lower end of the second communicating pipe is communicated with the outlet end of the wind power heater; and a second check valve and a second circulating water pump are mounted on the second communicating pipe along the flow direction of the circulating working medium in sequence. By the invention, the initial cost of the collector anti-freezing system is decreased, and the problems of pollution and the frost cracking of the pipelines and the valves are avoided.

Description

Air heated anti-freezing solar energy collector system

Technical field

The present invention relates to a kind of anti-freeze solar heat collector system.

Background technology

Because China some areas outside air temperature in winter is on the low side, when applied solar energy, must consider the antifreeze problem of solar thermal collector.And in the antifreeze design of solar thermal collector, national standard is generally recommended emptying system, is flow back to system, anti-icing fluid system and circulation winterization system.Flow back to and emptying system, the problem owing at the not in place and equipment of installing itself very easily causes residual moisture content in the system, thereby causes the bursting by freezing of valve and pipeline, influences the safe operation of system.The anti-icing fluid system, high concentration anti-icing fluid system particularly, its initial cost is bigger, its price is approximately 300～400 yuan of every square meter solar thermal collectors, and because solar thermal collector is positioned at outdoor, be subjected to the impact of external force easily and cause leakage, thereby cause the pollution of environment and waste economically.The circulation winterization system mainly starts circulating pump when the frozen situation of working medium may take place, very difficult in the control.If temperature is very low, only might do not had antifreeze effect by bursting by freezing by circulation yet.

Summary of the invention

The objective of the invention is for solve flow back to emptying system in very easily residual moisture content, cause the bursting by freezing problem of valve and pipeline, the very low problem that makes cycle fluid solidify the bursting by freezing pipeline of temperature, and anti-icing fluid system initial cost causes environmental pollution problems greatly and easily, and then a kind of air heated anti-freezing solar energy collector system is provided.

The present invention solves the problems of the technologies described above the technical scheme of taking to be: air heated anti-freezing solar energy collector system of the present invention comprises solar thermal collector, first water circulating pump, hot user, first check-valves, electric check valve, cycle fluid effuser and cycle fluid inflow pipe, hot user's outflow end is communicated with solar thermal collector by the cycle fluid effuser, first check-valves is installed on the cycle fluid effuser, hot user's inflow end is communicated with solar thermal collector by the cycle fluid inflow pipe, the flow direction that the electric check valve and first water circulating pump follow ring working medium is installed on the cycle fluid inflow pipe successively, described anti-freeze solar heat collector system also comprises wind power heating machine, second water circulating pump, second check-valves, temperature sensor, first communicating pipe, second communicating pipe, first control line and second control line, described temperature sensor is installed on the cycle fluid inflow pipe between electric check valve and the solar thermal collector, the upper end of described first communicating pipe is communicated with the cycle fluid inflow pipe, and the upper end of first communicating pipe is installed on the cycle fluid inflow pipe between solar thermal collector and the temperature sensor, the lower end of first communicating pipe is communicated with the entrance point of wind power heating machine, the upper end of described second communicating pipe is communicated with the cycle fluid effuser, and the upper end of second communicating pipe is installed on the cycle fluid effuser between first check-valves and the solar thermal collector, the lower end of second communicating pipe is communicated with the port of export of wind power heating machine, the flow direction that described second check-valves and second water circulating pump follow ring working medium is installed on second communicating pipe successively, described temperature sensor is connected with second water circulating pump by first control line, and temperature sensor is connected with electric check valve by second control line.

The present invention compared with prior art has following beneficial effect: wind power heating machine of the present invention utilizes wind energy to produce heat, and this heat is stored in the heat-storing material, when needs are antifreeze, and the cycle fluid phase-change material heat-accumulator tank heat removal of flowing through; The present invention has reduced the first cost of solar thermal collector freezing prevention liquid systems, and first cost only for 60% of existing solar thermal collector freezing prevention liquid systems first cost, has been stopped problem of environmental pollution simultaneously; The present invention has also solved owing to install or solar energy that other reasons causes flows back to or pipeline and the valve bursting by freezing problem of emptying system, and temperature is low causes that circulation is antifreeze not to have thermal source and the problem of bursting by freezing pipeline; The present invention is widely used, and its hot user's end can be building and heating, domestic hot-water and industrial oil field pipeline tracing etc.

Description of drawings

Fig. 1 is an integrally-built systematic schematic diagram of the present invention, Fig. 2 is the systematic schematic diagram (arrow is represented the flow direction of cycle fluid among the figure) of normal operation mode of the present invention, Fig. 3 is the systematic schematic diagram (arrow is represented the flow direction of cycle fluid among the figure) of antifreeze operational mode of the present invention, Fig. 4 is the front view (arrow is represented the flow direction of cycle fluid among the figure) of wind power heating machine of the present invention, and Fig. 5 is the A-A profile of Fig. 4.

The specific embodiment

The specific embodiment one: present embodiment is described in conjunction with Fig. 1-Fig. 5, the air heated anti-freezing solar energy collector system of present embodiment comprises solar thermal collector 2, first water circulating pump 4, hot user 5, first check-valves 7, electric check valve 13, cycle fluid effuser 20 and cycle fluid inflow pipe 21, hot user's 5 outflow end is communicated with solar thermal collector 2 by cycle fluid effuser 20, first check-valves 7 is installed on the cycle fluid effuser 20, hot user's 5 inflow end is communicated with solar thermal collector 2 by cycle fluid inflow pipe 21, the flow direction that the electric check valve 13 and first water circulating pump 4 follow ring working medium is installed on the cycle fluid inflow pipe 21 successively, described anti-freeze solar heat collector system also comprises wind power heating machine 1, second water circulating pump 6, second check-valves 8, temperature sensor 9, first communicating pipe 23, second communicating pipe 24, first control line 25 and second control line 26, described temperature sensor 9 is installed on the cycle fluid inflow pipe 21 between electric check valve 13 and the solar thermal collector 2, the upper end of described first communicating pipe 23 is communicated with cycle fluid inflow pipe 21, and the upper end of first communicating pipe 23 is installed on the cycle fluid inflow pipe 21 between solar thermal collector 2 and the temperature sensor 9, the lower end of first communicating pipe 23 is communicated with the entrance point of wind power heating machine 1, the upper end of described second communicating pipe 24 is communicated with cycle fluid effuser 20, and the upper end of second communicating pipe 24 is installed on the cycle fluid effuser 20 between first check-valves 7 and the solar thermal collector 2, the lower end of second communicating pipe 24 is communicated with the port of export of wind power heating machine 1, the flow direction that described second check-valves 8 and second water circulating pump 6 follow ring working medium is installed on second communicating pipe 24 successively, described temperature sensor 9 is connected with second water circulating pump 6 by first control line 25, and temperature sensor 9 is connected with electric check valve 13 by second control line 26.

The wind power heating machine of wind power heating machine 1 for having heat storage capacity of present embodiment, described wind power heating machine is by windward blades 31, cradling piece 32, bearing 33, stirring vane group 34, base 35, spiral coil 36, phase change heat storage material layer 37, external thermal insulation 38, metallic spacer layer 39, base plate 40 and top board 41 are formed, described top board 41 and base plate 40 be arranged in parallel up and down, the upper end of described cradling piece 32 is equipped with windward blades 31, the base 35 that the lower end of cradling piece 32 is passed on top board 41 and the base plate 40 is rotationally connected, cradling piece 32 is provided with bearing 33 with the intersection of top board 41, on the cradling piece 32 between base plate 40 and the top board 41, stirring vane group 34 is installed, on the cradling piece 32 between base plate 40 and the top board 41, be set with metallic spacer layer 39 and spiral coil 36 from inside to outside successively, described metallic spacer layer 39 and spiral coil 36 and cradling piece 32 coaxial settings, at base plate 40, top board 41, be filled with castor oil 42 in the space that cradling piece 32 and metallic spacer layer 39 surround, at base plate 40, top board 41, be provided with phase change heat storage material layer 37 in the space that metallic spacer layer 39 and spiral coil 36 surround, be coated with external thermal insulation 38 in spiral coil 36 outsides, the entrance point of spiral coil 36 is communicated with the lower end of first communicating pipe 23, and the port of export of spiral coil 36 is communicated with the lower end of second communicating pipe 24.

The specific embodiment two: present embodiment is described in conjunction with Fig. 1-Fig. 3, the anti-freeze solar heat collector system of present embodiment also increases expansion tank 3 and third connecting pipe 27, described expansion tank 3 is communicated with cycle fluid inflow pipe 21 by third connecting pipe 27, and third connecting pipe 27 is on the cycle fluid inflow pipe 21 between temperature sensor 9 and the electric check valve 13.So be provided with, play the effect of level pressure supply.Other composition is identical with the specific embodiment one with annexation.

Normal operation mode of the present invention (referring to Fig. 2): the temperature of cycle fluid is higher than its freezing point in this moment solar energy collector system, because this moment, system need not antifreezely, electric check valve 13 keeps normally opens.Cycle fluid flows out from hot user 5, through first check-valves 7, enter heat up in the solar thermal collector 2 after, resupply hot user 5 through first water circulating pump 4.Expansion tank 3 plays the effect of level pressure supply.

Antifreeze operational mode of the present invention (referring to Fig. 3): the temperature of the interior cycle fluid of solar energy collector system this moment is lower than its freezing point, because this moment, system needed antifreeze.Electric check valve 13 cuts out, indoor section with first water circulating pump 4 close and stop the circulation.Cycle fluid flows out from solar thermal collector 2, directly enters in the wind power heating machine 1, and cycle fluid is warmed up to more than the freezing point, and flow through second check-valves 8 and second water circulating pump 6 turn back in the solar thermal collector 2 again.

Claims (2)

1. air heated anti-freezing solar energy collector system, it comprises solar thermal collector (2), first water circulating pump (4), hot user (5), first check-valves (7), electric check valve (13), cycle fluid effuser (20) and cycle fluid inflow pipe (21), hot user's (5) outflow end is communicated with solar thermal collector (2) by cycle fluid effuser (20), first check-valves (7) is installed on the cycle fluid effuser (20), hot user's (5) inflow end is communicated with solar thermal collector (2) by cycle fluid inflow pipe (21), the flow direction that electric check valve (13) and first water circulating pump (4) follow ring working medium is installed on the cycle fluid inflow pipe (21) successively, it is characterized in that: described anti-freeze solar heat collector system also comprises wind power heating machine (1), second water circulating pump (6), second check-valves (8), temperature sensor (9), first communicating pipe (23), second communicating pipe (24), first control line (25) and second control line (26), described temperature sensor (9) is installed on the cycle fluid inflow pipe (21) between electric check valve (13) and the solar thermal collector (2), the upper end of described first communicating pipe (23) is communicated with cycle fluid inflow pipe (21), and the upper end of first communicating pipe (23) is installed on the cycle fluid inflow pipe (21) between solar thermal collector (2) and the temperature sensor (9), the lower end of first communicating pipe (23) is communicated with the entrance point of wind power heating machine (1), the upper end of described second communicating pipe (24) is communicated with cycle fluid effuser (20), and the upper end of second communicating pipe (24) is installed on the cycle fluid effuser (20) between first check-valves (7) and the solar thermal collector (2), the lower end of second communicating pipe (24) is communicated with the port of export of wind power heating machine (1), the flow direction that described second check-valves (8) and second water circulating pump (6) follow ring working medium is installed on second communicating pipe (24) successively, described temperature sensor (9) is connected with second water circulating pump (6) by first control line (25), and temperature sensor (9) is connected with electric check valve (13) by second control line (26).

2. according to the described air heated anti-freezing solar energy collector system of claim 1, it is characterized in that: anti-freeze solar heat collector system also comprises expansion tank (3) and third connecting pipe (27), described expansion tank (3) is communicated with cycle fluid inflow pipe (21) by third connecting pipe (27), and third connecting pipe (27) is positioned on the cycle fluid inflow pipe (21) between temperature sensor (9) and the electric check valve (13).

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