CN105865051A - Solar thermal collector capable of detecting leakage - Google Patents
Solar thermal collector capable of detecting leakage Download PDFInfo
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- CN105865051A CN105865051A CN201610207840.4A CN201610207840A CN105865051A CN 105865051 A CN105865051 A CN 105865051A CN 201610207840 A CN201610207840 A CN 201610207840A CN 105865051 A CN105865051 A CN 105865051A
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- thermal
- collecting tube
- pressure
- collector
- solar
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/50—Solar heat collectors using working fluids the working fluids being conveyed between plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2807—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
- G01M3/2815—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Examining Or Testing Airtightness (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a solar thermal collector capable of detecting leakage. The solar thermal collector comprises a box body and thermal collecting pipes. The top of the box body is provided with a transparent cover plate, and the bottom of the box body is provided with an insulating layer. The thermal collecting pipes are arranged in the box body. The solar thermal collector is characterized in that the solar flat plate type thermal collector further comprises a pressure measurement device which is connected to the thermal collecting pipes, and the pressure measurement device inspects whether the thermal collecting pipes are leaked or not by measuring the pressure inside the thermal collecting pipes; and once leakage occurs, the measured data of the pressure measurement device are abnormal, and valves of fluid entering the thermal collecting pipes are timely closed. According to the provided novel solar thermal collector capable of detecting leakage automatically, leakage is detected by detecting the pressure of the thermal collecting pipes.
Description
Technical field
The present invention relates to a kind of field of solar energy, particularly to a kind of solar thermal collector detecting leakage.
Background technology
Along with the high speed development of modern social economy, the mankind are increasing to the demand of the energy.But the traditional energy storage levels such as coal, oil, natural gas constantly reduce, the most in short supply, cause rising steadily of price, the problem of environmental pollution that conventional fossil fuel causes simultaneously is the most serious, these development that the most significantly limit society and the raising of human life quality.Solar heat converts and is that a kind of energy conversion efficiency and utilization rate be high and Solar use mode with low cost, that can be widely popularized in the whole society.In solar energy heat utilization device, it is important to solar radiant energy will be converted into heat energy, it is achieved the device of this conversion is referred to as solar thermal collector.
In solar thermal collector, a kind of form that plate armature right and wrong are usually shown in, this kind of structure generally comprises many parallel thermal-collecting tubes side by side, but it is in operation and fluid maldistribution in different thermal-collecting tubes can often occur, there is also simultaneously and cause fluid temperature (F.T.) in different thermal-collecting tube different because heating is uneven, thus cause the pressure in different thermal-collecting tubes different.Longtime running in this case, can cause the thermal-collecting tube that pressure is big to occur damaging, thus occur that fluid leaks, but currently without the heat collector of a more preferable detection leakage.
Summary of the invention
The present invention be directed to that thermal-collecting tube in plate armature solar thermal collector is parallel wants each thermal-collecting tube leak detection problem side by side, it is proposed that a kind of solar thermal collector detecting leakage, it is ensured that properly functioning in heat collector.
The technical scheme is that a kind of solar thermal collector detecting leakage, including casing, thermal-collecting tube, described casing top arranges transparent cover plate, box bottom arranges heat-insulation layer, described thermal-collecting tube is arranged in casing, described solar plate heat collector also includes pressure gauge, described pressure gauge is connected to thermal-collecting tube, by measuring the pressure in thermal-collecting tube, check whether thermal-collecting tube leaks, once leak, then the measurement data of pressure gauge will be abnormal, closes the valve entering thermal-collecting tube fluid in time.
As preferably, described heat collector also includes that control system, described control system and valve carry out data cube computation, and for controlling the opening and closing of valve, described control system and pressure gauge carry out data cube computation, for detecting the pressure that pressure gauge is measured.
As preferably, once the pressure of the pressure gauge of control system detection is less than predetermined value, and now control system control valve is automatically switched off, and forbids that fluid flows in thermal-collecting tube.
As preferably, described thermal-collecting tube is many side by side, is connected by communicating pipe between adjacent thermal-collecting tube, and described pressure gauge is attached with any one of multiple thermal-collecting tubes.
As preferably, described stream enters through the inlet header of thermal-collecting tube, then enters each thermal-collecting tube by inlet header, and described valve is arranged on fluid and enters on the pipeline of inlet header.
As preferably, the pressure on thermal-collecting tube top is measured in described pressure gauge.
As preferably, described thermal-collecting tube is rhombus, and the line at two relative angles of described rhombus is perpendicular to transparent cover plate.
As preferably, the four edges of rhombus is equal, and four angles of rhombus are equal.
As preferably, arranging inner fin inside described thermal-collecting tube, described inner fin connects the diagonal angle of rhombus, and described inner fin will be divided into multiple passage aisle, arranges intercommunicating pore on inner fin inside thermal-collecting tube, so that adjacent passage aisle communicates with each other；
The length of side of the rhombus of described thermal-collecting tube inner tube is L, and intercommunicating pore is circular, the radius r of described intercommunicating pore, and the distance between the intercommunicating pore center of circle adjacent on described same fin is l, meets following relation:
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, and a, b are parameters, 1.5 < a < 1.6,2.9 <b < 3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
As preferably, 15mm < l < 45mm.
The beneficial effects of the present invention is: the present invention detects the solar thermal collector of leakage, by arranging communicating pipe between thermal-collecting tube, it is ensured that in each thermal-collecting tube, pressure is uniform, the distributed uniform of fluid flow and the distributed uniform of the fluid resistance of motion；By the distance between communicating pipe along constantly the diminishing of fluid flow direction in thermal-collecting tube, further ensure the uniform of pressure in thermal-collecting tube, the distributed uniform of fluid flow and the distributed uniform of the fluid resistance of motion.Ensure pressure in thermal-collecting tube uniform on the premise of, only just can detect leakage by the pressure of detection thermal-collecting tube, it is ensured that the accuracy of detection.
Accompanying drawing explanation
Fig. 1 is the structural representation of flat type solar heat collector of the present invention；
Fig. 2 is the structure schematic top plan view of solar energy heat collection pipe of the present invention；
Fig. 3 is the structural representation of the solar thermal collector that the present invention improves；
Fig. 4 is the single thermal-collecting tube heat collection structure schematic diagram of Fig. 3
Fig. 5 is thermal-collecting tube cross-sectional structure schematic diagram of the present invention；
Fig. 6 is inner fin intercommunicating pore distribution schematic diagram of the present invention；
Fig. 7 is inner fin intercommunicating pore stagger arrangement distribution schematic diagram of the present invention；
Fig. 8 is rhombus scale diagrams in thermal-collecting tube of the present invention；
Fig. 9 is the thermal-collecting tube schematic cross-section that the present invention arranges pressure gauge.
Detailed description of the invention
Reference is as follows:
1, thermal-collecting tube 2, communicating pipe 3, lens 4, transparent cover plate 5, casing 6, heat-insulation layer, 7 inner fins, 8 intercommunicating pores, 9 passage aisles, 10 pressure gauges, 31 first lens, 32 second lens
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in detail.
Refer to shown in Fig. 1, a kind of solar plate heat collector, including casing 5, thermal-collecting tube 1, described casing 5 top arranges transparent cover plate 4, heat-insulation layer 6 is set bottom casing 5, described thermal-collecting tube 1 is arranged in casing 5, and described thermal-collecting tube 1 is many side by side, by connecting communicating pipe 2 between adjacent thermal-collecting tube 1.
Heat collector is in running, there is fluid maldistribution, and because during thermal-arrest, the heat that different thermal-collecting tubes absorbs is different, in causing different thermal-collecting tubes, fluid temperature (F.T.) is different, even fluid in some thermal-collecting tubes, such as water becomes the state of gas-liquid two-phase, some thermal-arrest tube fluids are still that liquid, so cause thermal-arrest overpressure to become big because fluid becomes steam, therefore by arranging communicating pipe between thermal-collecting tube, so that fluid flows mutually in thermal-collecting tube, the distribution of the pressure in all thermal-collecting tubes is so made to reach balance, also can promote that fluid distribution reaches balance.
As preferably, as it is shown in figure 1, the position being arranged on described communicating pipe 2 between middle part and the bottom of thermal-collecting tube 1.
It is found through experiments, communicating pipe 2 is arranged on this position, it is ensured that thermal-arrest tube fluid more fully flows by communicating pipe 2, it is possible to further up to the purpose of pressure equilibrium.
As preferably, as in figure 2 it is shown, the direction extended along thermal-collecting tube 1, between two adjacent thermal-collecting tubes 1, are set many communicating pipes 2.
By being arranged such, it is possible to make whole fluid continuous counterpressure in flow process, it is ensured that whole flow process pressure equalizes.
As preferably, the flow direction of fluid in thermal-collecting tube 1, the distance between adjacent communicating pipe 2 constantly reduces.
This purpose is to arrange more communicating pipe, because along with the flowing of fluid, fluid is constantly heated, along with fluid is constantly heated, being heated in different thermal-collecting tubes is more and more uneven, therefore by above-mentioned setting, it is possible to ensure to reach pressure equilibrium in process fluid flow as soon as possible.
As preferably, along the flow direction of thermal-arrest tube fluid, the ever-reduced amplitude of distance between adjacent communicating pipe is increasing.
It is found through experiments, above-mentioned setting, it is possible to ensure that the most excellent pressure that reaches faster equalizes in process fluid flow.
As preferably, as it is shown in figure 1, thermal-collecting tube 1 top arranges lens 3；Described thermal-collecting tube 1 is built with working medium, and described thermal-collecting tube is connected with import header and outlet header (not shown).Sunlight arrives lens 3 through the transparent cover plate 4 at the top of casing 5, then by lens 3 focusing illumination on thermal-collecting tube 1, the working medium of thermal-collecting tube 1 is heated.
As preferably, the focus of described lens 3 is positioned at the center of thermal-collecting tube 1, and such as pipe is positioned at the center of circle, and rhumbatron is positioned at the intersection point of two diagonal angle lines.
As preferably, described lens 3 are Fresnel Lenses.
As preferably, this casing 5 is arranged in tabular.Described working medium is conduction oil, water or other organic working medium.
As preferably, described transparent cover plate 4 is clear glass.
Described lens 3 are multiple, the corresponding thermal-collecting tube 1 of each lens 3, and described adjacent lens 3 are connected, each lens 3 described include multistage, the most in the embodiment in figure 1, each lens 3 in three sections of settings, including top interlude and respectively connect interlude both sides tilting section.
As preferably, as it is shown on figure 3, the cross section of described thermal-collecting tube 1 is rhombus.
Although Fig. 3 does not show communicating pipe 2, but as preferred structure, the embodiment of the diamond structure thermal-collecting tube of Fig. 3 also includes communicating pipe 2.
As preferably, the line at two relative angles in described rhombus is perpendicular to transparent cover plate 4.
By arranging diamond structure thermal-collecting tube 1 and thermal-collecting tube 1 is set to the line at two relative angles being perpendicular to transparent cover plate 4, it is ensured that more surfaces of collector tubes can absorb solar energy such that it is able to makes full use of solar energy.
As preferably, each lens 3 are in two sections of settings, including tilting section 31 and 31.Described tilting section 31 and 32 extends, as shown in Figure 4 along two limits on the top of rhombus.
By being arranged such, it is ensured that can the solar energy of thermal-arrest multiple directions, as shown in Figure 4, thus reach to make full use of solar energy.
As preferably, the focus of described tilting section 31 and 32 is positioned at the intersection point of two diagonal angle lines of rhombus.
As preferably, the four edges of rhombus is equal, and four angles of rhombus are equal.
As preferably, arranging inner fin 7 inside described thermal-collecting tube, described inner fin 7 connects the diagonal angle of rhombus, as shown in Figure 5.Described inner fin 7 is divided into multiple passage aisle 9 by internal for thermal-collecting tube 1, arranges intercommunicating pore 8, so that adjacent passage aisle 9 communicates with each other on inner fin.
By arranging inner fin 7, it is divided into multiple passage aisle 9, further augmentation of heat transfer by internal for thermal-collecting tube 1, but the pressure of corresponding fluid flowing increases.By arranging intercommunicating pore 8, ensure the connection between adjacent passage aisle 9, so that the fluid in the big passage aisle of pressure can flow in the passage aisle that neighbouring pressure is little, solve each problem that small flow channels 9 pressure is uneven and local pressure is excessive of inside of condensation end, thus promote the fluid abundant flowing in heat exchanger channels, simultaneously by the setting of intercommunicating pore 8, also reduce the pressure within thermal-collecting tube, improve heat exchange efficiency, also improve the service life of thermal-collecting tube simultaneously.
Preferably, the flow direction of fluid in thermal-collecting tube 1, the area of described intercommunicating pore 8 constantly increases.
Described intercommunicating pore 8 is circular configuration, and the flow direction of fluid in thermal-collecting tube 1, the radius of described circular configuration constantly increases.
Because the flow direction of fluid in thermal-collecting tube 1, fluid in thermal-collecting tube 1 constantly absorbs heat and even evaporates, hence in so that the pressure of thermal-collecting tube constantly increases, and because the existence of intercommunicating pore 8 so that the pressure distribution within thermal-collecting tube 1 is more and more uniform, and therefore the area of intercommunicating pore needs the biggest, constantly become big by arranging, so that in the case of ensureing the most even pressure of inside heat pipe pressure, increase heat exchange area by the change of intercommunicating pore area, thus improve heat exchange efficiency.
Preferably, the flow direction of fluid in thermal-collecting tube 1, the amplitude that the area of described intercommunicating pore 8 constantly increases is continuously increased.By being arranged such, also it is the Changing Pattern meeting flowing pressure, while reducing flow resistance further, improves heat exchange efficiency.By being arranged such, by being to test the heat exchange efficiency finding to improve about 9%, resistance is held essentially constant simultaneously.
Preferably, the flow direction of fluid in thermal-collecting tube 1, the distributed quantity of intercommunicating pore 8 gets more and more, and further preferably, the amplitude that described intercommunicating pore quantity constantly increases is continuously increased.
Reduce principle by the Distribution Principle of above-mentioned quantity and area identical, identical with intercommunicating pore quantity compared with, reduce circulation area by distributed number.
Finding in actual experiment, the area of intercommunicating pore 8 can not be too small, too small if can cause the increase of flow resistance, thus cause weakening of heat exchange, the area of intercommunicating pore 8 can not be excessive, and area is excessive, can cause the minimizing of heat exchange area, thus reduce heat transfer effect.Equally, the cross-sectional area of thermal-collecting tube 1 can not be excessive, and the excessive heat exchanger tube causing being distributed in tube plate structure unit length is very few, again result in heat transfer effect to be deteriorated, thermal-collecting tube flow area can not be too small, and too small meeting causes flow resistance to increase, thus causes heat transfer effect to be deteriorated.Therefore the distance between intercommunicating pore 8 with thermal-collecting tube cross-sectional area and adjacent intercommunicating pore 8 thereof must is fulfilled for certain requirement.
Therefore, the present invention is thousands of the numerical simulations by multiple various sizes of heat collectors and test data, in the case of meeting industrial requirements pressure-bearing (below 10MPa), in the case of realizing maximum heat exchange amount, the dimensionally-optimised relation of the optimal heat collector summed up.
The present invention is that the four edges of the rhombus of thermal-collecting tube 1 cross section is equal, and carry out under four angles of rhombus are equal is dimensionally-optimised.
The interior length of side (i.e. the outer length of side of rhombus deducts wall thickness) of the rhombus of described thermal-collecting tube inner tube is L, the radius r of described intercommunicating pore, and the distance between intercommunicating pore adjacent on described same fin is l, meets following relation:
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, and a, b are parameters, 1.5 < a < 1.6,2.9 <b < 3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
Wherein, l is equal to the distance between adjacent intercommunicating pore 8 center of circle.Distance between the intercommunicating pore center of circle that left and right as shown in Figure 4,5 is adjacent and neighbouring.
Further preferably, 15mm < l < 45mm.
Preferably, along with the increase of r/L, described a, b increase.
As preferably, a=1.57, b=2.93.
As preferably, as shown in Figure 6,7, each inner fin arranges multiple rows of intercommunicating pore 8, as it is shown in fig. 7, the plurality of intercommunicating pore 8 is staggered arrangement structure.Connect structure by staggered arrangement, heat exchange can be improved further, reduce pressure.
As preferably, also include the pressure gauge 10 measuring thermal-collecting tube pressure.Described pressure gauge 10 is connected to thermal-collecting tube 1, by measuring the pressure in thermal-collecting tube 1, check whether thermal-collecting tube 1 leaks, once leak, then the measurement data of pressure gauge 10 will be abnormal, then close the Fluid valve entered in thermal-collecting tube 1 in time.
As preferably, described heat collector also includes that control system and valve, described control system and valve carry out data cube computation, for controlling the opening and closing of valve and the size of valve flow.Described control system and pressure gauge 10 carry out data cube computation, for detecting the pressure that pressure gauge 10 is measured.Once the pressure of the pressure gauge 10 of control system detection is less than predetermined value, then show pressure anomaly, it is likely that thermal-collecting tube 1 leaks, and now control system control valve is automatically switched off, and forbids that fluid flows in thermal-collecting tube.By above-mentioned automatic control function so that monitoring process realizes automatization.
By connecting communicating pipe 2 between described thermal-collecting tube 1, as preferably, described pressure gauge 10 is attached with any one of multiple thermal-collecting tubes 1.
By arranging communicating pipe 2 so that the connection of multiple thermal-collecting tubes 1 is got up, and once some thermal-collecting tube leaks, then because of the reason of connection, pressure gauge 10 also can detect pressure anomaly at any time, the most also can automatically control Fluid valve and close, it is to avoid fluid enters in heat exchanger tube.So can reduce the quantity of pressure gauge 10, only by the pressure gauge that or quantity are few, thus realize the pressure detecting of all thermal-collecting tubes.
As preferably, described fluid first passes through the inlet header of thermal-collecting tube, then enters each thermal-collecting tube 1 by inlet header.Described valve is arranged on fluid and enters on the pipeline of inlet header.So when leakage being detected when, automatic-closing valve, then fluid cannot be introduced into inlet header, naturally cannot be introduced into thermal-collecting tube.
As preferably, it is vacuum structure in casing 5.
As preferably, the pressure on thermal-collecting tube 1 top is measured in described pressure gauge 10.Mainly in running, top is usually steam condition, and pressure is maximum.Once leaking, pressure change is obvious, so measurement is the most accurate.
As preferably, it is possible to use humidity measuring instrument replaces pressure gauge 10.Described humidity measuring instrument is arranged in casing, and humidity measuring instrument and control system carry out data cube computation, once fluid leakage, then can enter in casing, when the humidity of detection will be abnormal higher than certain numerical value, i.e. measurement data, then control system closes the Fluid valve entered in thermal-collecting tube 1 in time.
Although the present invention discloses as above with preferred embodiment, but the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (10)
1. the solar thermal collector detecting leakage, including casing, thermal-collecting tube, described casing top arranges transparent cover plate, box bottom arranges heat-insulation layer, described thermal-collecting tube is arranged in casing, it is characterized in that, described solar plate heat collector also includes pressure gauge, described pressure gauge is connected to thermal-collecting tube, by measuring the pressure in thermal-collecting tube, check whether thermal-collecting tube leaks, once leak, then the measurement data of pressure gauge will be abnormal, closes the valve entering thermal-collecting tube fluid in time.
2. the solar thermal collector of detection leakage as claimed in claim 1, it is characterized in that, described heat collector also includes control system, described control system and valve carry out data cube computation, for controlling the opening and closing of valve, described control system and pressure gauge carry out data cube computation, for detecting the pressure that pressure gauge is measured.
3. the solar thermal collector of detection leakage as claimed in claim 2, it is characterised in that once the pressure of the pressure gauge of control system detection is less than predetermined value, now control system control valve is automatically switched off, and forbids that fluid flows in thermal-collecting tube.
4. the solar thermal collector of detection leakage as claimed in claim 1, it is characterised in that described thermal-collecting tube is many side by side, is connected by communicating pipe between adjacent thermal-collecting tube, and described pressure gauge is attached with any one of multiple thermal-collecting tubes.
5. the solar thermal collector of detection leakage as claimed in claim 1, it is characterised in that described stream enters through the inlet header of thermal-collecting tube, then enters each thermal-collecting tube by inlet header, and described valve is arranged on fluid and enters on the pipeline of inlet header.
6. the solar thermal collector of detection leakage as claimed in claim 1, it is characterised in that the pressure on thermal-collecting tube top is measured in described pressure gauge.
7. the solar thermal collector of the detection leakage as described in one of claim 1-6, it is characterised in that described thermal-collecting tube is rhombus, and the line at two relative angles of described rhombus is perpendicular to transparent cover plate.
8. the solar thermal collector of detection leakage as claimed in claim 7, it is characterised in that the four edges of rhombus is equal, and four angles of rhombus are equal.
9. the solar thermal collector of detection leakage as claimed in claim 8, it is characterized in that, inside described thermal-collecting tube, inner fin is set, described inner fin connects the diagonal angle of rhombus, described inner fin will be divided into multiple passage aisle inside thermal-collecting tube, inner fin arranges intercommunicating pore, so that adjacent passage aisle communicates with each other；
The length of side of the rhombus of described thermal-collecting tube inner tube is L, and intercommunicating pore is circular, the radius r of described intercommunicating pore, and the distance between the intercommunicating pore center of circle adjacent on described same fin is l, meets following relation:
l/L*10=a*ln(r/L*10)+b；
Wherein ln is logarithmic function, and a, b are parameters, 1.5 < a < 1.6,2.9 <b < 3.0;
0.34<l/L<0.38;
0.14<r/L<0.17;
30mm<L<120mm；
5mm<r<17mm。
10. the solar thermal collector of detection leakage as claimed in claim 9, it is characterised in that 15mm < l < 45mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710123600.0A CN106949641B (en) | 2016-04-05 | 2016-04-05 | A kind of solar thermal collector that leakage is detected using humidity measuring instrument |
| CN201610207840.4A CN105865051B (en) | 2016-04-05 | 2016-04-05 | Solar thermal collector capable of detecting leakage |
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| CN201610207840.4A CN105865051B (en) | 2016-04-05 | 2016-04-05 | Solar thermal collector capable of detecting leakage |
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| CN201710123600.0A Active CN106949641B (en) | 2016-04-05 | 2016-04-05 | A kind of solar thermal collector that leakage is detected using humidity measuring instrument |
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| CN110398075A (en) * | 2019-08-15 | 2019-11-01 | 中国科学院电工研究所 | Groove type solar heat-collecting pipe vacuum device for measuring properties |
| CN110806017A (en) * | 2018-08-05 | 2020-02-18 | 青岛鑫众合贸易有限公司 | Pressure monitoring groove type solar heat collector system |
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| CN112283956A (en) * | 2018-08-05 | 2021-01-29 | 青岛佰腾科技有限公司 | Design method for spacing of inclined heat collecting tubes |
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| CN201382607Y (en) * | 2009-03-03 | 2010-01-13 | 新疆启荣能源科技有限公司 | Solar energy hot water monitoring and leak-preventing device |
| CN201615641U (en) * | 2010-01-05 | 2010-10-27 | 云南省玉溪市佳利太阳能设备有限公司 | Solar heat collecting plate |
| CN201637150U (en) * | 2010-03-05 | 2010-11-17 | 侯春来 | Leak detection device of solar water heating system |
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| CN103712341A (en) * | 2013-12-27 | 2014-04-09 | 广西吉宽太阳能设备有限公司 | Solar water heater |
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| CN105258365A (en) * | 2015-11-04 | 2016-01-20 | 江西宝象科技有限公司 | Solar flat plate type heat collector |
| CN105387637B (en) * | 2015-12-23 | 2016-09-07 | 闵邦政 | A kind of inner fin heat-collecting tube solar water heater |
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- 2016-04-05 CN CN201710123600.0A patent/CN106949641B/en active Active
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| CN110398075A (en) * | 2019-08-15 | 2019-11-01 | 中国科学院电工研究所 | Groove type solar heat-collecting pipe vacuum device for measuring properties |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105865051B (en) | 2017-03-22 |
| CN106949641A (en) | 2017-07-14 |
| CN106949641B (en) | 2018-02-06 |
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