CN203518291U - Vacuum tube type heat collecting system - Google Patents

Vacuum tube type heat collecting system Download PDF

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Publication number
CN203518291U
CN203518291U CN201320684800.0U CN201320684800U CN203518291U CN 203518291 U CN203518291 U CN 203518291U CN 201320684800 U CN201320684800 U CN 201320684800U CN 203518291 U CN203518291 U CN 203518291U
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China
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water
temperature
heat collector
sensing probe
switchboard
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CN201320684800.0U
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李建华
李梦莹
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李建华
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers

Abstract

The utility model relates to a vacuum tube type heat collecting system. The system comprises a heat collector, a water regimen sensor, a backflow limiting check valve, a water storage tank, a circulating water pump, an electric water feeding valve and a controller, wherein the heat collector, the water regimen sensor, the backflow limiting check valve, the water storage tank, the circulating water pump and the electric water feeding valve are connected sequentially through vacuum tubes; the controller is connected with the water regimen sensor, the electric water feeding valve and the circulating water pump respectively; a first temperature sensing probe connected with the controller is installed inside the water storage tank; the water regimen sensor is arranged at a circulating water outlet of the heat collector; the electric water feeding valve is arranged at a circulating water inlet of the heat collector; the circulating water pump is installed under the electric water feeding valve; and the controller receives water storage tank temperature signals transmitted by the first temperature sensing probe as well as heat collector water level signals and heat collector temperature signals transmitted by the water regimen sensor, analyzes the signals transmitted through the first temperature sensing probe and the water regimen sensor and then controls the electric water feeding valve and the circulating water pump according to analysis results. According to the system, tube breakage and water leakage phenomena are eliminated, and the heat collection efficiency is high.

Description

A kind of vacuum tube type heat collection system
Technical field
The utility model relates to solar energy techniques field, particularly a kind of vacuum tube type heat collection system.
Background technology
The operation principle of traditional electron tubes type solar thermal collection system is: after vacuum tube is by solar radiation, water temperature rises, be pooled to heat collector, when its water temperature is during higher than water storage box uniform temperature, water circulating pump starts, water storage box and heat collector circulation, bring hot water into water storage box, after water temperature in water storage box and the water temperature in heat collector maintain an equal level, shut down, so operation constantly raises the water temperature in water storage box repeatedly, until the water temperature in heat collector no longer rises, be now water storage box temperature peak, and the temperature of heat collector is also peak.Disappearance along with sunlight, water temperature in heat collector can decline gradually, now due to the physical property of water rising-heat contracting-cold, make the volume contraction after generation cooling in heat collector, now need to supplement slowly the volume contraction in heat collector, until start to heat up after solar radiation for the second time, completed a thermal-arrest cycle.
According to above-mentioned operation principle, known, electron tubes type solar thermal collection system is prone to brokenly tube leakage phenomenon, and in the art, broken tube leakage phenomenon is the worst on solar collecting performance impact.Cause brokenly tube leakage phenomenon reason a lot, such as: client's improper use, while having sunlight, on blank pipe, water causes; External Force Acting, as the hard thing from sudden around, weight etc. (this situation has the trend increasing year by year in recent years, now claims sky rubbish); The people's who around works is careless etc.In addition, when vacuum tube solar thermal collection system normally moves, no matter the vacuum tube that causes of any reason breaks, all can produce hot water outer-flowing phenomenon in heat collector, if now can not prevent flowing water for a long time.
In sum, according to actual conditions, want to solve brokenly tube leakage phenomenon and just must solve in the moment of broken pipe how to cut off out in time the problem at water source.Electron tubes type solar thermal collection system only has water inlet and two mouths of a river of water outlet, want to cut off these two mouths of a river and just must add stop valve at these two ends, the switch of this valve must determine according to the normal operation rules of vacuum pipe solar collecting system, can meet normal moving law and can also make in time water leakage fault judgement and make rapidly movement response, to prevent long-term flowing water; Secondly also need the temperature in every group of heat collector of deep detection, by the variation to specific temperature rise, can promptly and accurately judge the solar collecting performance of respectively organizing heat collector, thereby the reason of finding out, change in time the vacuum tube of inefficacy, but also can provide foundation for analyzing heat collector solar collecting performance decrease reason, make application system possess for a long time higher solar collecting performance.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of vacuum tube type heat collection system, for solving the broken tube leakage phenomenon of traditional vacuum tubular type collecting system.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of vacuum tube type heat collection system, it is characterized in that, comprise the heat collector connecting successively by vacuum tube, regimen sensor, limit refluxing single flow valve, water storage box, water circulating pump and upper water motor-driven valve, also comprise respectively and regimen sensor, the controller that upper water motor-driven valve is connected with water circulating pump, the first temperature-sensing probe being connected with described controller is installed in described water storage box, described regimen sensor is placed in the circulating outlet of described heat collector, described upper water motor-driven valve is placed in the circulation water inlet of described heat collector, described water circulating pump is arranged on described upper water motor-driven valve below, described controller receives the water storage box temperature signal of described the first temperature-sensing probe transmission and heat collector water level signal and the heat collector temperature signal of described regimen sensor transmissions, and the signal transmitting by the first temperature-sensing probe and regimen sensor is analyzed, according to analysis result, control described upper water motor-driven valve and described water circulating pump again.
The beneficial effects of the utility model are: the utility model has distinctive feature in the problem that solves broken tube leakage, when occurring the moment of broken pipe, be arranged on limit refluxing single flow valve on circulating outlet because of the poor effect automatic cut-off of return pressure, blocked under current above.Simultaneously regimen sensor is delivered to controller by anhydrous signal rapidly, and controller drives upper water motor-driven valve to cut out, and makes that heat collector is anhydrous to flow, and has reached and has prevented the object of leaking.By controller and regimen probe, control the temperature of heat collector simultaneously, can avoid again occurring booster because of excess Temperature.And in whole process, each parts of collecting system are normally operation all, even the long-term unmanned more than phenomenon generation of flowing water of finding also not have.
On the basis of technique scheme, the utility model can also be done following improvement.
Further, described regimen sensor comprises two water-level probes, and two water-level probes are welded on respectively the one end that metal blind pipe and a metal connecting sheet of the second temperature-sensing probe are housed, the other end of metal blind pipe and metal connecting sheet is installed respectively the first terminal screw and the second terminal screw, the first terminal screw is for drawing the water-level probe signal output connection of the water-level probe that is welded on metal blind pipe one end, the second terminal screw is for drawing the water-level probe signal output connection of the water-level probe that is welded on metal connecting sheet one end, and described the first terminal screw is also for drawing two the second temperature-sensing probe signal output connections of the second temperature-sensing probe of installing in metal blind pipe, the output connection of described water-level probe signal is all connected with controller with described the second temperature-sensing probe signal output connection.
Adopt the beneficial effect of above-mentioned further scheme to be: regimen sensor of the present utility model can be deep into heat collector inside, when inner filling water, two water-level probes and water form loop, are on-state; When inside is anhydrous, two water-level probes can not form loop and disconnect, and spread out of anhydrous signal; The second temperature-sensing probe is put in the metal blind pipe that is deep into heat collector inside, can Measurement accuracy heat collector internal temperature can stop again contacting of temperature-sensing probe and water, has extended its service life.The unique texture of regimen sensor of the present utility model determining the collection that it can be safe, efficient, stable and spreading out of regimen signal, and fault rate is extremely low, is the anti-broken tube leakage of vacuum tube type heat collection system and adopts one of vitals of thermal control.
Further, described metal blind pipe and described metal connecting sheet are all placed in a shell that is filled with insulating heat insulating material, and described in be filled with cover on the centre position of shell of insulating heat insulating material and have a round handle or a holding screw;
When on the centre position of the described shell that is filled with insulating heat insulating material, cover has a round handle, described in be filled with insulating heat insulating material shell Front-end Design be direct insertion structure;
When on the centre position of the described shell that is filled with insulating heat insulating material, cover has a holding screw, described in be filled with insulating heat insulating material shell Front-end Design be gas thread structure.
Adopt the beneficial effect of above-mentioned further scheme to be: described metal blind pipe and described metal connecting sheet belong to an integral body, be placed in shell, by the insulating heat insulating material of filling, fill and fix.Round handle design is convenient to artificially regimen sensor straight cutting be entered relevant position in heat collector and is used, and the design of direct insertion structure is convenient to sensor and is inserted into smoothly relevant position in heat collector; The design of holding screw makes regimen sensor connect mode with silk and is mounted to the relevant position use in heat collector, the related sensor adopting in existing heat collector is not all that silk connects formula, can only could realize and thread connecing by introduction pipe upwards, and gas thread structure be convenient to the relevant position that mode that regimen sensor connects with silk is mounted to inside and outside and other relevant device of heat collector.
Further, described limit refluxing single flow valve comprises valve body, be arranged in valve body and can upwards open and the switchboard that falls after rise downwards and for supporting the sealing girth sheets of the switchboard of downward falling, described switchboard below is provided with elastic parts, for when switchboard falls after rise downwards because of self gravitation, make to leave gap between described switchboard and described sealing girth sheets.
Further, described elastic parts comprises the first supporting pin, the first stainless steel elastic component and the first fixed screw: described the first supporting pin lower end is fixed on described the first stainless steel elastic component, described switchboard, for when switchboard falls after rise because of self gravitation, is supported downwards in upper end; One end of described the first stainless steel elastic component is fixed on described sealing girth sheets below by the first fixed screw, is fixed with described the first supporting pin on the other end.
Further, described elastic parts comprises the second supporting pin, upper location-plate, the second stainless steel elastic component, lower location-plate and the second fixed screw, described the second supporting pin is from top to bottom successively through upper location-plate, the second stainless steel elastic component and lower location-plate, and described the second fixed screw is for being fixed on described sealing girth sheets below by described lower location-plate and described upper location-plate.
Adopt the beneficial effect of above-mentioned further scheme to be: adopt limit refluxing single flow valve of the present utility model, bottom-up direction when water forward flow, switchboard is upwards opened, and each assembly is both inoperative not to be hindered yet; When switchboard falls after rise downwards because of self gravitation, the return pressure pressure of cause on switchboard is less, switchboard is fallen on elastic parts, make to leave gap between switchboard and sealing girth sheets, upper and lower water can slowly flow between switchboard and the gap of sealing girth sheets, to solve the cooled recirculation water problem of heat collector; When heat collector occurs that booster leaks, because the flow direction of water is reverse, the return pressure pressure now acting on switchboard is larger, elastic parts is compressed, respective support pin is unable to be supported again, by switchboard, is depressed, and Simultaneous Switching plate has also been pressed onto on sealing girth sheets, recirculation water is truncated, and has guaranteed that water above can constantly not flow out because of booster downwards.
Further, described controller comprises main relay and the digital temperature control table being all connected with described main relay, debug switch, normal run indicator and fault alarm indicator lamp, also comprise the middle control relay being connected between described digital temperature control table and described upper water motor-driven valve, described digital temperature control table connects described the first temperature-sensing probe and described regimen sensor, and described debug switch connects described upper water motor-driven valve.
Adopt the beneficial effect of above-mentioned further scheme to be: described controller architecture is simple, easy for installation, be easy to debugging, and the function with normal operation indication and fault alarm, be convenient to staff and grasp relevant Hydrologic Information, they each parts that comprise can adopt separation member combination simultaneously, also can form highly integrated single-chip computer control system, be applicable to the reconstruction of various solar thermal collection systems and newly-built, compatible good.
Further, described debug switch is the debug switch of manually controlling, and when described fault alarm indicator lamp is luminous, can only manually control the state of described upper water motor-driven valve by described debug switch.
Adopt the beneficial effect of above-mentioned further scheme to be: when tube breaking phenomenon appears in collecting system, need the debug switch through manually controlling could start upper water motor-driven valve, thereby this group heat collector can automatic loading water operation.
In the utility model, when there is broken tube leakage phenomenon, heat collector loop exit produces the backflow of water, make described limit refluxing single flow valve in cut-off state, and it is zero that described regimen sensor detects heat collector water level signal simultaneously, and the water level signal detecting is transferred to described main relay, described main relay drives described fault alarm indicator lamp luminous, and drives described upper water motor-driven valve to close simultaneously.Shown workflow when described vacuum tube type heat collection system is normally moved, by limit backflow effect, the regimen measuring ability of regimen sensor and the corresponding control of main relay of limit refluxing single flow valve, in carrying out the process of a normal thermal-arrest, effectively avoided broken tube leakage phenomenon.
In addition, during temperature value that the difference that the heat collector temperature signal value detecting when described regimen sensor deducts the water storage box temperature signal value that described the first temperature-sensing probe detects equals to set in advance, control relay action in the middle of described, and drive described upper water motor-driven valve to open, again by described water circulating pump by the water in described water storage box through upper water motor-driven valve, heat collector, after heating, regimen sensor and limit refluxing single flow valve send water storage box back to, until the heat collector temperature signal value that described regimen sensor detects equals the water storage box temperature signal value that described the first temperature-sensing probe detects, close described upper water motor-driven valve.Known the utility model adopts many temperature inputs, simulates the control principle that many Temperature Difference Ratios are exported, and this control principle is applicable to any thermal-arrest operational mode, compatible good.
Accompanying drawing explanation
Fig. 1 is the structural representation of vacuum tube type heat collection system described in the utility model;
Fig. 2 is the structural representation of direct insertion regimen sensor in the utility model embodiment;
Fig. 3 is the structural representation that in the utility model embodiment, silk connects formula sensor;
Fig. 4 is the structural representation of the first limit refluxing single flow valve described in embodiment;
View when Fig. 5 is opening of the first limit refluxing single flow valve;
Fig. 6 is the peacetime state schematic diagram of the first limit refluxing single flow valve;
View when Fig. 7 is closing of the first limit refluxing single flow valve;
Fig. 8 is the structural representation of the second limit refluxing single flow valve described in embodiment;
Fig. 9 is the assembling schematic diagram of the second limit refluxing single flow valve;
State and view at ordinary times when Figure 10 is opening of the second limit refluxing single flow valve;
View when Figure 11 is closing of the second limit refluxing single flow valve;
Figure 12 is the structural representation of controller described in the utility model;
Figure 13 is the design wiring diagram of four group controllers in embodiment bis-;
Figure 14 adopts the structural representation of the collecting system of four group controllers in embodiment bis-.
In accompanying drawing, the list of parts of each label representative is as follows:
1, heat collector, 2, regimen sensor, 3, limit refluxing single flow valve, 4, water storage box, 5, water circulating pump, 6, controller, 203, metal blind pipe, 204, metal connecting sheet, 205, the first terminal screw, 206, the second terminal screw, 207, shell, 208, round handle, 209, direct insertion structure, 210, holding screw, 211, gas thread structure, 212, protective cover, 213, wiring outlet, 301, valve body, 302, switchboard, 303, sealing girth sheets, 304, access cover, 305, the first supporting pin, 306, the first stainless steel elastic component, 307, the first fixed screw, 308, the second supporting pin, 309, the second stainless steel elastic component, 310, the second fixed screw, 311, upper location-plate, 312 times location-plates, J, main relay, C, digital temperature control table, KM, debug switch, S, for middle control relay, T, the first temperature-sensing probe, FM, upper water motor-driven valve, ST1, water-level probe, ST2, the second temperature-sensing probe, L1, for normal run indicator, L2, fault alarm indicator lamp.
The specific embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, embodiment mono-provides a kind of vacuum tube type heat collection system, comprise the heat collector 1 connecting successively by vacuum tube, regimen sensor 2, limit refluxing single flow valve 3, water storage box 4, water circulating pump 5 and upper water motor-driven valve FM, also comprise respectively and regimen sensor 2, the controller 6 that upper water motor-driven valve FM is connected with water circulating pump 5, the the first temperature-sensing probe T being connected with described controller 6 is installed in described water storage box 4, described regimen sensor 2 is placed in the circulating outlet of described heat collector 1, described upper water motor-driven valve 6 is placed in the circulation water inlet of described heat collector 1, described water circulating pump 5 is arranged on described upper water motor-driven valve 6 belows, described controller 6 receives the water storage box temperature signal of described the first temperature-sensing probe T transmission and heat collector water level signal and the heat collector temperature signal of described regimen sensor 2 transmission, and the signal transmitting by the first temperature-sensing probe and regimen sensor is analyzed, according to analysis result, control described upper water motor-driven valve 6 and described water circulating pump 5 again.
As shown in Figures 2 and 3, described regimen sensor comprises two water-level probe ST1, and two water-level probe ST1 are welded on respectively the one end that metal blind pipe 203 and a metal connecting sheet 204 of the second temperature-sensing probe ST2 are housed, the other end of metal blind pipe 203 and metal connecting sheet 204 is installed respectively the first terminal screw 205 and the second terminal screw 206, the first terminal screw 205 is for drawing the water-level probe signal output connection A1 of the water-level probe ST1 that is welded on metal blind pipe 203 one end, the second terminal screw 206 is for drawing the water-level probe signal output connection A2 of the water-level probe ST1 that is welded on metal connecting sheet 204 one end, and described the first terminal screw 205 is also for drawing two the second temperature-sensing probe signal output connection B1 of the second temperature-sensing probe ST2 of metal blind pipe 203 interior installations, B2, described water-level probe signal output connection A1, A2 and described the second temperature-sensing probe signal output connection B1, B2 is all connected with controller 6.
In addition, described water-level probe ST1 is stainless steel metal probe, described the second temperature-sensing probe ST2 is NTC temperature-sensing probe, and described metal blind pipe 203 and described metal connecting sheet 204 are all placed in a shell 207 that is filled with insulating heat insulating material, and shell itself can be manufactured by harmless organic plastics or metal material.
In order to conform, the stainless steel metal probe that water-level probe ST1 adopts thickly forms for 0.1-0.25mm stainless steel thin slice by 2, length≤25mm, wide≤3mm, there is semi-spiral moulding, applicable voltage is between 1-7V, its action principle is by producing break-make relation between the microelectrode on these two stainless steel thin slices and water, be specially: the heat collector of normal work can not lack of water, two water-level probes now form connected loop with water, make water-level probe signal output connection A1, A2 micro voltage identical; When there is no water or water level lower than water-level probe, therefore water-level probe signal output connection A1, A2 disconnect, and make its two ends produce micro voltage, by the variation guide controller of this voltage, make a response.
Metal blind pipe 203 mainly contains two effects, and the one, be used as the electrode of one of them water-level probe, the 2nd, be used for putting into NTC temperature-sensing probe.The NTC temperature-sensing probe is here thermistor, and it can change conversion resistance according to water temperature, and not only low price but also durable in use and thermometric is accurate in the environment of sealing, can not be subject to the impact of external environment.NTC temperature-sensing probe after packing in metal blind pipe seals other one of metal blind pipe, only stays two wiring to extend, i.e. temperature-sensing probe signal output connection B1, B2.
On the basis of describing at said structure, the regimen sensor of the present embodiment is divided into again direct insertion regimen sensor and silk connects formula regimen sensor, respectively as shown in Figures 2 and 3.On the centre position of the shell 207 of described direct insertion regimen sensor, cover has a round handle 208, and described shell Front-end Design is direct insertion structure 209; Described silk connects cover on the centre position of shell 207 of formula regimen sensor a holding screw 210, and described shell Front-end Design is gas thread structure 211.In addition, described round handle 208 or described holding screw 210 are connected with a protective cover 212, and the output connection of described water-level probe signal and the output connection of described temperature-sensing probe signal are all placed in this protective cover 212.
For direct insertion regimen sensor, it is divided into perception part (water-level probe and the second temperature-sensing probe), insertion portion (metal blind pipe and metal connecting sheet), round handle and wiring part (terminal screw and output connection etc.).Direct insertion sensor is applicable to the hole of traditional Φ 58,47 vacuum pipe racks sealing rings, use while being particularly suitable for carrying out the system reform; Its insertion portion is full of the packing material of thermal insulating, after with protective cover 12 by gas thread screwed connection, the concrete size of front end is determined according to conventional vacuum tube external diameter in the market, is essentially Φ 58,47 two kind of specification.
For silk, connect formula regimen sensor, it is for being arranged on necessary pipeline and water tank, its purposes is more extensive, both can be used for solar energy optical-thermal system, also can be used in other and allly need to monitor water temperature and the position (as fields such as heating, water supply, retaining, moisturizing, drainings) of the regimen situation such as whether there is water or not, be the optimal replacement product of temperature detection sensor in water tank.This silk connects formula regimen sensor and is divided into perception part (water-level probe and the second temperature-sensing probe), gas thread part (metal blind pipe and metal connecting sheet), round handle and wiring part (holding screw and output connection etc.), its gas thread part and holding screw inside are full of the packing material of thermal insulating, after with protective cover by gas thread screwed connection.The silk of the present embodiment connects the specification of formula regimen sensor can be determined according to conventional pipe diameter in the market, is essentially Φ 25,32,40,50 4 kind of specification.
For above-mentioned two kinds of regimen sensors, on its protective cover 212, be provided with wiring outlet 213, for drawing described water-level probe signal output connection A1, A2 and described temperature-sensing probe signal output connection B1, B2.The design of wiring outlet 213, is convenient to the output connection of drawing to be connected to corresponding controller, makes controller by measuring the data obtained, adjusts regimen or temperature.For ease of assembling, water-level probe signal output connection A1, A2 and described temperature-sensing probe signal output connection B1, B2 can be integrated into a non-polar four-core color separation expansion cover holding wire.
As shown in Figure 4 and Figure 8, described limit refluxing single flow valve 3 comprises valve body 301, be arranged in valve body 301 and can upwards open and the switchboard 302 that falls after rise downwards and for supporting the sealing girth sheets 303 of the switchboard of downward falling, described switchboard 302 belows are provided with has the fixedly elastic parts of elastic force, for when switchboard falls after rise downwards because of self gravitation, make to leave gap between described switchboard 302 and described sealing girth sheets 303.This clearance distance is preferably 5mm to 8mm.In addition, the outer access cover 304 that is also provided with of described valve body 301.The basic functional principle of this limit refluxing single flow valve is: Fa is pressure of return water, and Fb is upper water pressure; When Fb is greater than Fa, switchboard forward conduction; When Fa is less than or equal to 0.50KPa than Fb, the reverse low discharge conducting of switchboard; When Fa is greater than Fb and has 0.50KPa, switchboard is reverse closes.
According to above-mentioned design basis and operation principle, the present embodiment specific design two kinds limit refluxing single flow valves, its main distinction is the design to elastic parts.
As shown in Figures 4 to 7, the first limit refluxing single flow valve, its elastic parts comprises the first supporting pin 305, the first stainless steel elastic component 306 and the first fixed screw 307: described the first supporting pin 305 lower ends are fixed on described the first stainless steel elastic component 306, described switchboard 302, for when switchboard 302 falls after rise because of self gravitation, is supported downwards in upper end; One end of described the first stainless steel elastic component 306 is fixed on described sealing girth sheets 303 belows by the first fixed screw 307, is fixed with described the first supporting pin 305 on the other end.
Described the first stainless steel elastic component 306 adopts stainless steel spring sheet, and a circular shaft that is about 8-10mm of described the first supporting pin 305 employings, and its one end is fixed on of stainless steel spring sheet, and the other end plays the effect of supporting switch plate, and this end points is round end.Described the first fixed screw 307 is for fastening stainless steel spring sheet, and its other end (not being fixed with one end of the first supporting pin 305) through stainless steel spring sheet is fixed on sealing girth sheets 303 belows with valve body one.
The operation principle of the first limit refluxing single flow valve is as follows:
1) state while opening: as shown in Figure 5, when water forward flow, i.e. bottom-up direction, switchboard is upwards opened, and other assembly is both inoperative not to be hindered yet.
2) peacetime state: as shown in Figure 6, switchboard is fallen on the first supporting pin naturally because of self gravitation, at recirculation water, acting on pressure on switchboard is from top to bottom less than in the return pressure of 0.50KPa left and right, described the first stainless steel elastic component drives described the first supporting pin to play a supportive role, make to stay apertured spacing 5-8mm between switchboard and sealing girth sheets, upper and lower water can slowly flow between the 5-8mm of the gap of switchboard and closed-loop, to solve the cooled recirculation water problem of heat collector.
3) closed condition: as shown in Figure 7, when heat collector occurs that booster leaks, because the flow direction of water is reverse, from top to bottom, the return pressure pressure now acting on switchboard is greater than 0.50KPa certainly, the first stainless steel elastic component is compressed, the first supporting pin is unable to be supported again, by switchboard, is depressed, and Simultaneous Switching plate has also been pressed onto on fixed closed ring, recirculation water is truncated, and has guaranteed that water above can constantly not flow out because of booster downwards.
In the whole course of work, described the first fixed screw Main Function is to fix the first stainless steel elastic component can not be shifted, and can also play fine setting effect to support interval and support force size.
As shown in Figs. 8 to 11, the elastic parts of the second limit refluxing single flow valve comprises the second supporting pin 308, the second stainless steel elastic component 309, the second fixed screw 310, upper location-plate 311 and lower location-plate 312, described the second supporting pin 308 is from top to bottom successively through upper location-plate 311, the second stainless steel elastic component 309 and lower location-plate 312, and described the second fixed screw 310 is for being fixed on described sealing girth sheets 303 belows by described lower location-plate 312 and described upper location-plate 311.Described the second stainless steel elastic component 309 adopts stainless steel spiral spring, and described the second fixed screw 310 is from bottom to up successively through described lower location-plate 312 and described upper location-plate 311.
As shown in Figure 9, it is the assembling schematic diagram of described limit refluxing single flow valve, described the second supporting pin 308 is one and is about 25mm and center-top with the circular shaft of the fixing rounded tabs of a circle, circular shaft top is through the about 8-10mm of upper location-plate 311, play the effect of supporting switch plate, circular shaft bottom puts the second stainless steel elastic component 309 and passes lower location-plate 312, and the second stainless steel elastic component 309 is clipped in the middle, use the second fixed screw 310 successively through upper and lower location-plate, to be fixed on sealing girth sheets 303 belows with valve body one.
The operation principle of the second limit refluxing single flow valve is as follows:
1) state while opening: as shown in figure 10, in figure, the switchboard of dotted line represents to limit refluxing single flow valve state when opening.Bottom-up direction when water forward flow, switchboard is upwards opened, and other assembly is both inoperative not to be hindered yet.
2) peacetime state: as shown in figure 10, in figure, the switchboard of solid line represents to limit refluxing single flow valve in peacetime state.The second supporting pin between upper and lower location-plate and the rounded tabs of the second supporting pin be close to upper location-plate, switchboard is fallen on the second supporting pin naturally because of self gravitation, at recirculation water, acting on pressure on switchboard is from top to bottom less than in the return pressure of 0.5KPa left and right, described the second stainless steel elastic component drives described the second supporting pin to play a supportive role, make to stay apertured spacing 5-8mm between switchboard and sealing girth sheets, upper and lower water can slowly flow between switchboard and the gap 5-8mm of sealing girth sheets, to solve the cooled recirculation water problem of heat collector.
3) closed condition: as shown in figure 11, when heat collector occurs that booster leaks, because the flow direction of water is reverse, from top to bottom, the return pressure pressure now acting on switchboard is greater than 0.5KPa certainly, the second stainless steel elastic component, the second supporting pin is unable to be supported again, by switchboard, is depressed, and Simultaneous Switching plate has also been pressed onto on sealing girth sheets, recirculation water is truncated, and has guaranteed that water above can constantly not flow out because of booster downwards.
In the whole course of work, the Main Function of described the second fixed screw is to reach, to fix the object that the second stainless steel elastic component and the second supporting pin can not be shifted by fastening upper and lower location-plate, can also play fine setting effect to support interval and support force size.
The first limit refluxing single flow valve and the very large difference of the first limit refluxing single flow valve on construction of switch, but operation logic is identical, and the effect that can obtain is also identical.
As shown in figure 12, described controller comprises main relay J and the digital temperature control table C being all connected with described main relay J, debug switch KM, normal run indicator L1 and fault alarm indicator lamp L2, also comprise the middle control relay S being connected between described digital temperature control table C and described upper water motor-driven valve FM, described digital temperature control table C connects the second temperature-sensing probe ST2 of described the first temperature-sensing probe T and described regimen sensor 2, and the water-level probe ST1 of described regimen sensor 2 is connected in the respective pin of described main relay J, described debug switch KM connects described upper water motor-driven valve FM.Wherein, described main relay J is universal electric device, and the present embodiment preferably adopts JYB714 type relay; In described digital temperature control table C, be integrated with water tank temperature table, heat-collecting temperature table and differential temperature controller, described water tank temperature table is for receiving the water storage box temperature signal of described the first temperature-sensing probe T transmission, described heat-collecting temperature table is for receiving the heat collector temperature signal of described the second temperature-sensing probe ST2 transmission, described differential temperature controller is all connected with described water tank temperature table and described heat-collecting temperature table, the water storage box temperature signal and the heat collector temperature signal that for analyzing and processing, receive, and according to result to corresponding execution architecture sending controling instruction.
The operation principle that described controller 6 carries out thermal-arrest control is:
1) when ST1 has transmitted water signal, the respective pin of main relay J is connected, and L1 is bright; The power import end of middle control relay S has electricity, if digital temperature control table C out-put supply now, S action, FM conducting, the normal operation of thermal-arrest circulation; Otherwise FM does not move thermal-arrest circulation in run-stopping status.
2) when ST1 transmits anhydrous signal, the respective pin of main relay J is connected, and L2 is bright; Now, except debug switch KM, all cannot start FM, thermal-arrest operation stops.
3) establish the water storage box temperature value that ST2 represents that the second temperature-sensing probe detects simultaneously, T represents the heat-collecting box temperature value that the first temperature-sensing probe detects simultaneously, and, when ST2-T=set temperature value, S moves, if now L1 is bright, and FM running, if L2 is bright, FM can not move.
Integrate after above-mentioned each parts, establish the water storage box temperature value that ST2 represents that the second temperature-sensing probe detects simultaneously simultaneously, T represents the heat-collecting box temperature value that the first temperature-sensing probe detects simultaneously, and the operation principle of single collecting system is as described below:
1) when system is normally moved, regimen sensor 2 is having water signal and temperature signal to deliver in the main relay J and digital temperature control table C in controller 6 by signal connecting line respectively, normal run indicator L1 lights, and digital temperature control table shows the temperature digital that water storage box 4 and heat collector 1 transmit.
2) the normal run indicator L1 when controller lights, and during ST2-T< set temperature value, upper water motor-driven valve FM can not open, and can only proof system equipment be normal.
When controller, normal indicator lamp L1 lights, and during ST2-T=set temperature value, upper water motor-driven valve FM opens, by water circulating pump 5 by the water in water storage box 4 through 1 time circulation pipe of heat collector, through FM, regimen sensor, limit refluxing single flow valve, hot water is constantly brought into water storage box 4 successively, when ST2=T, FM closes, and completes this thermal-arrest circulation.
When system shows fault, occurred suddenly after broken tube leakage, therefore heat collector upper cycling mouth is understood and the backflow that produces water, therefore at limit refluxing single flow valve 3 two ends, must produce the return pressure that is greater than 0.5KPa, cause limit refluxing single flow valve 3 in cut-off state, now, regimen sensor 2 is delivered to controller by signal connecting line respectively anhydrous signal and temperature signal, fault alarm indicator lamp L2 lights, control the upper water motor-driven valve FM being positioned on lower circulation port closes simultaneously, this valve is once close, except the manual command of debug switch KM, other any instruction is all invalid to it.
Debug switch KM can independent operating under any state, and is completely manually to control, should be for a long time in closed condition when normal at ordinary times; Open and close to refer to and control the state that is positioned at the upper water motor-driven valve on lower circulation port, no matter now demonstration is " normally " or " fault ", manually control is all effective; As long as there is " fault " demonstration, just necessary manually opened debug switch KM, otherwise this group collecting system just can not move by automatic loading water, and the concrete function of debug switch comprises following four aspects:
A) the first examination water of new construction, be placed on the state of unlatching, and normal indicator lamp just should be for a long time in closed condition after lighting.
B) after broken tube leakage is changed again, manually opened debug switch, until fault-signal eliminating, after showing normally, can be for a long time in closed condition.
C) because need not or occurring for a long time for a long time cutting off the water or during lack of water, because the moisture in heat collector constantly evaporates, there is the blank pipe phenomenon of part in vacuum tube, now, controller also there will be fault to show, during with the upper water of prompting client, to check the temperature of heat collector, if when temperature is less than or equal to 50 ℃, can open water on debug switch; If be greater than 50 ℃, should select sunset restart switch operation after 2 hours, avoid again occurring water booster phenomenon.
D) when finding that heat collector absorbs heat temperature rise gap when larger under kindred circumstances, can utilize debug switch KM to test, and relevant heat collector is carried out to on-the-spot actual inspection, very effective to finding the vacuum tube of inefficacy.In addition, to new construction, also can pass through Data Comparison, search the heat absorption reason such as defective.
What the controller of embodiment mono-adopted is separation member combination, belong to elementary cell compositional model based on its basic structure and operation principle, and should form by organizing this element in actual applications more, therefore can consider elementary cell compositional model integrated, to can further consider the Single-chip Controlling that exploitation is highly integrated.As shown in figure 13, embodiment bis-has given the wiring diagram of four group controllers designs, and the operation principle of every group controller is basic identical with above-mentioned single group control model, no longer explains.
In embodiment bis-, Figure 14 has provided the structural representation of the collecting system that adopts four group controllers, in figure: P represents the control system of integrated four group controllers as shown in figure 13, in Figure 13 and Figure 14, J1, J2, J3, J4 represents four main relays, L11, L12, L13, L14 represents four fault alarm indicator lamps, L21, L22, L23, L23 represents four normal run indicator, C1, C2, C3, C4 represents four heat-collecting temperature tables, FM1, FM2, FM3, FM4 represents four upper water motor-driven valves, 2A, 2B, 2C, 2D represents four regimen sensors, 3A, 3B, 3C, 3D represents four limit refluxing single flow valves, C ' represents the water tank temperature table being connected with the first temperature-sensing probe, water tank temperature table and heat-collecting temperature table are integrated on digital temperature control table and use, remaining part label is consistent with above-mentioned each accompanying drawing.Concrete operation principle is as follows:
1) under normal circumstances, L21-L24 is Chang Liang, and C ' and C1-C4 show respectively the temperature value that T and 2A-2D transmit.When solar radiation heat collector, its temperature rises to after the setting temperature difference higher than T, be that temperature value that the temperature value that obtains arbitrarily in 2A-2D deducts T is while equaling to set temperature approach, FM1 to FM4 respectively correspondence opens, by water circulating pump 5, water is circulated to water storage box through heat collector, until the temperature value obtaining arbitrarily in 2A-2D is while equaling the temperature value of T, FM1 to FM4 respectively correspondence closes, heat collector operation stops, and this is normal operating condition; If now have any one group of temperature value not reach in 2A-2D to set temperature approach or temperature rise heats up very slowly or not, this group may have the problems such as bad pipe of inefficacy, and the upper water motor-driven valve of correspondence can not opened operation yet.
2) if L11-L14 one of them light phenomenon, illustrate that this group heat collector has booster to leak or lack of water blank pipe resembles, now only have manually opened KM just can make water on the upper water motor-driven valve of its correspondence, otherwise other program all can not start upper water motor-driven valve, and now all can not affect other respectively operation of group.
3) Main Function of 3A-3D: A) sunlight meets in heat collector the recirculation water of needs when hot water is cooling after decorporating; B) water in the upper circular tube moving because of other above blocking when any one group of heat collector generation booster leaks flows downward, and plays the booster top cut-off effect of leaking.
For the collecting system of embodiment bis-, it specifically has following Installation Considerations and advantage:
1) after integral solar water system is installed or has been transformed, go up for the first time the necessary manually opened debug switch of water, while being full of water in each heat collector, after each fault alarm indicator lamp all extinguishes, and each corresponding normal run indicator is lighted, now enable debugs switch, enters normal operating condition.
2) after having any vacuum tube to occur that booster generation is leaked in system in any one group of heat collector, corresponding limit refluxing single flow valve is closed automatically because of the effect of pressure of return water, the outflow of water makes regimen sensor rapidly in anhydrous state, anhydrous signal is delivered to controller by holding wire, controller disconnects rapidly the upper water motor-driven valve power supply that is positioned at below, simultaneous faults alarm lamp is lighted, so far, except debug switch, other any working procedure all can not start the upper water motor-driven valve of this group below automatically, stopped the generation of the long-time preventing water phenomenon of solar energy that causes because of accident, the operation of other each group all can not be affected.
3) while having any vacuum tube to occur bad pipe (inner bag damages but be water-tight) or old, old inefficacy pipe in system in any one group of heat collector, the temperature value that can transmit by each group compares, just can find out this kind of vacuum tube easily, got rid of install after the Heat-collecting effect obvious reason that declines.
4) after system is installed, because of for a long time need not or lack of water or pipeline is not smooth etc. when vacuum tube blank pipe phenomenon appears in reason, system also there will be automatic alarm situation out of service, has avoided the booster occurring because of water on blank pipe to lose.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (8)

1. a vacuum tube type heat collection system, it is characterized in that, comprise the heat collector, regimen sensor, limit refluxing single flow valve, water storage box, water circulating pump and the upper water motor-driven valve that by vacuum tube, connect successively, also comprise the controller being connected with water circulating pump with regimen sensor, upper water motor-driven valve respectively;
The first temperature-sensing probe being connected with described controller is installed in described water storage box, described regimen sensor is placed in the circulating outlet of described heat collector, described upper water motor-driven valve is placed in the circulation water inlet of described heat collector, and described water circulating pump is arranged on described upper water motor-driven valve below;
Described controller receives the water storage box temperature signal of described the first temperature-sensing probe transmission and heat collector water level signal and the heat collector temperature signal of described regimen sensor transmissions, and the signal transmitting by the first temperature-sensing probe and regimen sensor is analyzed, then control described upper water motor-driven valve and described water circulating pump according to analysis result.
2. vacuum tube type heat collection system according to claim 1, it is characterized in that, described regimen sensor comprises two water-level probes, and two water-level probes are welded on respectively the one end that metal blind pipe and a metal connecting sheet of the second temperature-sensing probe are housed, the other end of metal blind pipe and metal connecting sheet is installed respectively the first terminal screw and the second terminal screw, the first terminal screw is for drawing the water-level probe signal output connection of the water-level probe that is welded on metal blind pipe one end, the second terminal screw is for drawing the water-level probe signal output connection of the water-level probe that is welded on metal connecting sheet one end, and described the first terminal screw is also for drawing two the second temperature-sensing probe signal output connections of the second temperature-sensing probe of installing in metal blind pipe, the output connection of described water-level probe signal is all connected with controller with described the second temperature-sensing probe signal output connection.
3. vacuum tube type heat collection system according to claim 2, it is characterized in that, described metal blind pipe and described metal connecting sheet are all placed in a shell that is filled with insulating heat insulating material, and described in be filled with cover on the centre position of shell of insulating heat insulating material and have a round handle or a holding screw;
When on the centre position of the described shell that is filled with insulating heat insulating material, cover has a round handle, described in be filled with insulating heat insulating material shell Front-end Design be direct insertion structure;
When on the centre position of the described shell that is filled with insulating heat insulating material, cover has a holding screw, described in be filled with insulating heat insulating material shell Front-end Design be gas thread structure.
4. vacuum tube type heat collection system according to claim 1, it is characterized in that, described limit refluxing single flow valve comprises valve body, be arranged in valve body and can upwards open and the switchboard that falls after rise downwards and for supporting the sealing girth sheets of the switchboard of downward falling, described switchboard below is provided with elastic parts, for when switchboard falls after rise downwards because of self gravitation, make to leave gap between described switchboard and described sealing girth sheets.
5. vacuum tube type heat collection system according to claim 4, it is characterized in that, described elastic parts comprises the first supporting pin, the first stainless steel elastic component and the first fixed screw: described the first supporting pin lower end is fixed on described the first stainless steel elastic component, described switchboard, for when switchboard falls after rise because of self gravitation, is supported downwards in upper end; One end of described the first stainless steel elastic component is fixed on described sealing girth sheets below by the first fixed screw, is fixed with described the first supporting pin on the other end.
6. vacuum tube type heat collection system according to claim 4, it is characterized in that, described elastic parts comprises the second supporting pin, upper location-plate, the second stainless steel elastic component, lower location-plate and the second fixed screw, described the second supporting pin is from top to bottom successively through upper location-plate, the second stainless steel elastic component and lower location-plate, and described the second fixed screw is for being fixed on described sealing girth sheets below by described lower location-plate and described upper location-plate.
7. vacuum tube type heat collection system according to claim 1, it is characterized in that, described controller comprises main relay and the digital temperature control table being all connected with described main relay, debug switch, normal run indicator and fault alarm indicator lamp, also comprise the middle control relay being connected between described digital temperature control table and described upper water motor-driven valve, described digital temperature control table connects described the first temperature-sensing probe and described regimen sensor, and described debug switch connects described upper water motor-driven valve.
8. vacuum tube type heat collection system according to claim 7, is characterized in that, described debug switch is the debug switch of manually controlling, and when described fault alarm indicator lamp is luminous, can manually control the state of described upper water motor-driven valve by described debug switch.
CN201320684800.0U 2013-11-01 2013-11-01 Vacuum tube type heat collecting system Withdrawn - After Issue CN203518291U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604226B (en) * 2013-11-01 2016-03-02 李建华 A kind of vacuum tube type heat collection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103604226B (en) * 2013-11-01 2016-03-02 李建华 A kind of vacuum tube type heat collection system

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