CN1058470C - Combined solar apparatus for seawater desalination and heat supply - Google Patents

Abstract

The present invention relates to a solar sea water desalting and heat supply combined device which comprises a solar water heater, a water-vapor separator, a three-flow heat exchanger, etc. Sea water goes into a cold water casing pipe in the heat exchanger and moves upward in the direction of the opposite flow, and the sea water can exchange the heat with vapor and hot water flowing into a hot water pipe; the vapor flows from top to bottom and is output by the water heater, the vapor is gravitationally separated via the water-vapor separator, and then flows into a condensation pipe; then, the sea water flows into the solar water heater, and the sea water can be output after heated into a water-vapor mixture. After the water vapor is condensed into pure water, the pure water can be discharged; hot water can be led out for using or hot water can be discharged out of the device from the middle of the heat exchanger. The device is suitable for a life support facility in isolated islands, desert zones and motor fishing vessels.

Description

Solar seawater desalination and heat supply combined apparatus

The present invention relates to a kind of helioplant, exactly, relate to a kind of device that utilizes sun power to make sea water desaltination and hot water is provided simultaneously.

Sun power is extremely abundant, and the utmost point energy to be developed again is radiated the sun power of earth surface in four ten minutes, be equivalent to the energy consumption in 1 year in the whole world nowadays.Sun power is again a kind of clean, pollution-free and environment do not had the good primary energy source of influence, of high grade, the resource plentifulness, and just energy density is low; And it is subjected to territorial restrictions hardly, and many places can utilize sun power.Because the primary energy source that stores in the earth reduces year by year, since the seventies, exploitation is popularized and is utilized sun power to become one of important energy source problem of entire society and even the world being badly in need of solving.Through developing for many years, the evaluation and exploration technology of sun power is in the edge of breakthrough, built up 1 kilowatt of central tower type focusing solar radiation thermal power station as the U.S.: Japan has finished the development of 1 multikilowatt line focus solar radiation thermal power station ... China has also dropped into sizable human, financial, and material resources in the solar energy development utilization, and has obtained some achievements that obtain remarkable benefit.The applicant is on the basis of development tackling key problem for many years, declared the patent application of the base apparatus that some bladder meridian connecting with nape can develop, as: " a kind of translation solar energy concentrator " (application number: CN93109064.4), " a kind of step intensification numerically controlled solar boiler " (application number " CN93117777.4) etc., do one's bit for the cause mansion that sun power promotes the well-being of mankind.

The purpose of this invention is to provide a kind of solar seawater desalination and heat supply combined apparatus.

The present invention is achieved in that and includes solar water heater, steam trap and three plume interchanger, it is characterized in that: above-mentioned three plume interchanger are by the cold water sleeve pipe of the inflow seawater in its outside and be positioned at two pipe one prolong and hot-water lines one than minor diameter of cold water sleeve pipe intermediary and formed, and are wound with adiabatic restrictive coating, cold water telescopic seawer outlet in cold water telescopic outer felt to be connected with the inlet of solar water heater; Above-mentioned solar water heater is by a plurality of arc reflector placed side by side, and a plurality of vacuum heat absorbing pipe that is installed in the mutual serial connection on the arcuate midway point place radius of each arc reflector is formed; The output terminal of this solar water heater inserts the inlet end of steam trap by temperature-sensing valve; The outlet of the vapour of above-mentioned steam trap, liquid phase respectively be positioned at three plume interchanger intermediary prolongs and hot-water line and be connected, and introduce pure water and hot water storage tank respectively from the exit of this prolong and hot-water line; Wherein the centre of hot-water line is circumscribed with a Draw off valve.

The prolong of above-mentioned three plume interchanger, hot-water line and cold water sleeve pipe all are to form with the straight tube structure.

The present invention is on the basis of solar water heater, utilize energy cascade utilization notion and make another be used for sea water desaltination or pure water and produce life supportive device with the heat supply coupling, mainly be applicable to isolated island, desert or remote outlying area, especially be fit to be equipped in the motor fishing vessel of offshore operation as living guarantee device or the auxiliary equipment on other seagoing vessels.Because the present invention mainly is applicable to isolated users such as isolated dispersive seagoing vessel or island, desert, research party, so structure makes every effort to simple and practical, except the regular voluntarily opposite heat tube road scale removal of needs, do not need other maintenances, surplus operation life generally can reach ten year, this point is crucial for the isolated island of communications and transportation inconvenience or desert area etc.

Fig. 1 is a structural representation of the present invention.

Referring to Fig. 1, the 1st, apparatus for heating water by solar energy, it is made up of a plurality of arc reflector 11 placed side by side and 12 of a plurality of vacuum heat absorbing pipes on the mutual arcuate midway point place radius that is installed in arc reflector that is connected in series, and to make the axis of this speculum be North and South direction, and to make the angle of its axis and horizontal plane be the latitude value of installing and using ground.Make solar water heater so adopt this similar applicant's patent " a kind of solar energy collector with non-motion tracking function) " structure (CN93219582.), be for when utilizing sun power most possibly, make structure units such as its machinery simple as much as possible.Because China island, south or northwest desert area, sunshine duration is long, the sun is close to direct projection again, area is 3 square metres a water-heater, per hour can collect temperature and be 100-120 ℃ heat energy 1000 kilocalories, water after the heating is controlled at the temperature of hot water and steam between 100-105 ℃ through temperature-sensing valve 2 and (should suitably adjusts according to local water quality situation and above sea level highly the work), exports steam trap 3 to.At this, water vapor and hot water are after gravity separation, respectively from exporting prolong 4B and the hot-water line 4C that enters the three plume interchanger 4 separately.This three plumes interchanger 4 is by the cold water sleeve pipe 4A in the outside and be positioned at two pipes of intermediary, one prolong 4B and hot-water line 4C one is formed, adopt reflux type to carry out heat exchange, upwards flow after wherein seawater or the former water cold water sleeve pipe 4A bottom from interchanger enters, absorb the heat that steam and hot water contained among top-down prolong 4B and the hot-water line 4C.Seawater or former water can be preheated in interchanger and just flow out its outlet about 80-85 ℃, enter water-heater and are heated once more by sun power.Therefore Shi Shuiyi is near boiling point, and after reheating once more in water-heater, quite a few seawater is vaporized and forms the steam two phase mixture stream and go into steam trap.Wherein steam enter prolong through with sleeve pipe 4A in the cold water heat exchange and be condensed into pure hot water, its water temperature water inlet water temperature when flowing out sleeve pipe 4 at last a little more than seawater or former water, enter the pure water basin for using, and when spissated hot sea water or former water are flowed out by the hot-water line 4C in the interchanger, also with cold water sleeve pipe 4A in cold water carry out heat exchange with its heat absorption after, final with state discharger a little more than cooling water inlet place water temperature.A Draw off valve can be introduced in the centre of hot-water line, so that the hot water that therefrom extracts about 80-90 ℃ uses for daily life.Wherein the cold water jacket exterior of heat exchanger is answered the wound insulation sheath, so that reduce the heat radiation loss as far as possible.

Seawater or former water can be put into storage tank with seawater etc. in advance with pitcher pump or family expenses electric pump, pure water or hot water also should accumulate with basin respectively, because the seawater saltiness is higher, very easily fouling in evaporative process, therefore, all pipelines in the heat exchanger 4 all adopt straight tube to constitute, with scale removal for convenience detach and re-assembly use.

Claims (2)

1, a kind of solar seawater desalination and heat supply combined apparatus, include solar water heater, steam trap and three plume interchanger, it is characterized in that: above-mentioned three plume interchanger are by the cold water sleeve pipe of the inflow seawater in its outside and be positioned at two pipe one prolong and hot-water lines one than minor diameter of cold water sleeve pipe intermediary and formed, be wound with adiabatic restrictive coating in cold water telescopic outer felt, cold water telescopic seawer outlet is connected with the inlet of solar water heater; Above-mentioned solar water heater is by a plurality of arc reflector placed side by side, and a plurality of vacuum heat absorbing pipe that is installed in the mutual serial connection on the arcuate midway point place radius of each arc reflector is formed; The output terminal of this solar water heater inserts the inlet end of steam trap by temperature-sensing valve; The outlet of the vapour of above-mentioned steam trap, liquid phase respectively be positioned at three plume interchanger intermediary prolongs and hot-water line and be connected, and introduce pure water and hot water storage tank respectively from the exit of this prolong and hot-water line; Wherein the centre of hot-water line is circumscribed with a Draw off valve.

2, solar seawater desalination as claimed in claim 1 and heat supply combined apparatus is characterized in that: the prolong of above-mentioned three plume interchanger, hot-water line and cold water sleeve pipe all are to form with the straight tube structure.