CN106949641A - A kind of solar thermal collector of utilization humidity measuring instrument detection leakage - Google Patents
A kind of solar thermal collector of utilization humidity measuring instrument detection leakage Download PDFInfo
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- CN106949641A CN106949641A CN201710123600.0A CN201710123600A CN106949641A CN 106949641 A CN106949641 A CN 106949641A CN 201710123600 A CN201710123600 A CN 201710123600A CN 106949641 A CN106949641 A CN 106949641A
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- Prior art keywords
- thermal
- collecting tube
- casing
- fluid
- heat collector
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Classifications
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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
-
- 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
-
- 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)
- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a kind of solar plate heat collector, including casing, thermal-collecting tube, the casing top sets transparent cover plate, bottom half sets heat-insulation layer, the thermal-collecting tube is arranged in casing, the solar plate heat collector also includes humidity measuring instrument, the humidity measuring instrument is arranged in casing, humidity measuring instrument carries out data cube computation with control system, once fluid is leaked, then it can enter in casing, when the humidity of detection is higher than certain numerical value, i.e. measurement data will be abnormal, then the Fluid valve that control system is closed into thermal-collecting tube in time.The invention provides a kind of solar thermal collector of new-type automatic Leakage Detection, leakage is detected by detecting the humidity of thermal-collecting tube.
Description
Application number:CN2016102078404
The applying date:2016.4.5
Denomination of invention:Detect the solar thermal collector of leakage
Technical field
The invention belongs to field of solar energy, more particularly to a kind of flat type solar heat collector.
Background technology
With the high speed development of modern social economy, the mankind are increasing to the demand of the energy.But coal, oil, day
The traditional energy storage levels such as right gas constantly reduce, increasingly in short supply, rising steadily for price are caused, while conventional fossil fuel is caused
Problem of environmental pollution it is also further serious, these development that all limit society significantly and the raising of human life quality.The sun
Can a kind of thermal transition solar energy profit that is that energy conversion efficiency and utilization rate are high and with low cost, can be widely popularized in the whole society
Use mode.In solar energy heat utilization device, it is important to which solar radiant energy is converted into heat energy, the device of this conversion is realized
Referred to as solar thermal collector.
In solar thermal collector, plate armature be generally comprise in a kind of very common form, such a structure it is many
The parallel thermal-collecting tube side by side of root, but it is uneven often to occur fluid distribution in different thermal-collecting tubes in operation, also simultaneously
In the presence of because heat it is uneven cause in different thermal-collecting tubes fluid temperature (F.T.) different, so as to cause pressure in different thermal-collecting tubes not
Together.Longtime running in this case, the thermal-collecting tube that pressure can be caused big is damaged, so that there is fluid leakage, but mesh
Preceding neither one preferably detects the heat collector of leakage.
The content of the invention
For above-mentioned situation, the present invention is intended to provide a kind of detect the flat type solar heat collector that leakage occurs, it is ensured that
Normal operation in heat collector.
A kind of solar plate heat collector, including casing, thermal-collecting tube, the casing top set transparent cover plate, casing
Bottom sets heat-insulation layer, and the thermal-collecting tube is arranged in casing, and the solar plate heat collector also includes moisture measurement and filled
Put, the humidity measuring instrument is arranged in casing, humidity measuring instrument carries out data cube computation with control system, once fluid is let out
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 is timely
Close the Fluid valve entered in thermal-collecting tube.
Preferably, the thermal-collecting tube is many side by side, connected between adjacent thermal-collecting tube by communicating pipe.
Preferably, the stream enters through the inlet header of thermal-collecting tube, each thermal-arrest is then entered by inlet header
Pipe, described valve is arranged on fluid and entered on the pipeline of inlet header.
Preferably, setting many communicating pipes between the direction extended along thermal-collecting tube, two adjacent thermal-collecting tubes.
Preferably, along the flow direction of thermal-arrest tube fluid, the distance between adjacent communicating pipe constantly reduces.
Preferably, along the flow direction of thermal-arrest tube fluid, the distance between adjacent communicating pipe ever-reduced width
Degree is increasing.
Preferably, the thermal-collecting tube is rhombus, the line at two relative angles of the rhombus is perpendicular to transparent cover plate.
Preferably, the four edges of rhombus are equal, four angles of rhombus are equal.
Compared with prior art, the present invention has the advantage that：
1）The invention provides a kind of solar thermal collector of new-type automatic Leakage Detection, by detecting the humidity in heat-collecting box
To detect leakage.
2）There is provided a kind of flat type solar heat collector of Novel structure, by setting communicating pipe between thermal-collecting tube,
Ensure that the uniform of pressure in each thermal-collecting tube, fluid flow it is evenly distributed and fluid motion resistance evenly distributed；It is logical
Cross and diminish along the continuous of fluid flow direction in thermal-collecting tube the distance between communicating pipe, further ensure pressure in thermal-collecting tube
It is uniform, fluid flow it is evenly distributed and fluid motion resistance evenly distributed.
3）By setting the arrangement of rhombus thermal-collecting tube and thermal-collecting tube in casing, it ensure that more heats are inhaled
Receive.
4）By opening up intercommunicating pore inside thermal-collecting tube, the evenly distributed of fluid in small flow channels ensure that in thermal-collecting tube.
5）The present invention is being ensured that heat exchange amount is maximum and flow resistance is met in the case of requiring, obtained by test of many times
To an optimal solar energy heat collection pipe optimum results, and by being verified, so as to demonstrate the accurate of result
Property.
Brief description of the drawings
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 improved solar thermal collector of the invention；
Fig. 4 is Fig. 3 single thermal-collecting tube heat collection structure schematic diagram
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 sets device for pressure measurement.
Reference is as follows：
1st, 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 is small logical
Road, 10 device for pressure measurement, 31 first lens, 32 second lens.
Embodiment
The embodiment to the present invention is described in detail below in conjunction with the accompanying drawings.
It refer to shown in Fig. 1, a kind of solar plate heat collector, including casing 5, thermal-collecting tube 1, the top of casing 5
Transparent cover plate 4 is set, and the bottom of casing 5 sets heat-insulation layer 6, and the thermal-collecting tube 1 is arranged in casing 5, and the thermal-collecting tube 1 is side by side
Many, connected by communicating pipe 2 between adjacent thermal-collecting tube 1.
In the process of running, it is uneven to there is fluid distribution for heat collector, and because during thermal-arrest, different thermal-arrests
The heat that pipe absorbs is different, causes fluid temperature (F.T.) in different thermal-collecting tubes different, even fluid in some thermal-collecting tubes, such as water into
For the state of gas-liquid two-phase, some thermal-arrest tube fluids are still liquid, so because fluid becomes steam and causes thermal-collecting tube
Interior pressure becomes big, therefore by setting communicating pipe between thermal-collecting tube, can make it that fluid flows mutually in thermal-collecting tube, so
So that the pressure distribution in all thermal-collecting tubes reaches balance, fluid distribution can be also promoted to reach balance.
Preferably, as shown in figure 1, the communicating pipe 2 being arranged on the position between the middle part of thermal-collecting tube 1 and bottom.
It is found through experiments that, will sets communicating pipe 2 in this position, it is ensured that thermal-arrest tube fluid in communicating pipe 2 by more filling
Shunting is dynamic, can be further up to pressure purpose in a balanced way.
Preferably, as shown in Fig. 2 being set between the direction extended along thermal-collecting tube 1, two adjacent thermal-collecting tubes 1 many
Root communicating pipe 2.
By being arranged such, whole fluid continuous counterpressure in flow process is enabled to, it is ensured that whole flowing
Pressure process is balanced.
Preferably, along the flow direction of fluid in thermal-collecting tube 1, the distance between adjacent communicating pipe 2 constantly reduces.
This purpose be in order to set more communicating pipes because with the flowing of fluid, fluid is constantly heated, with
Fluid is constantly heated, heated more and more uneven in different thermal-collecting tubes, therefore by above-mentioned setting, ensure that in fluid
Reach that pressure is balanced in flow process as soon as possible.
Preferably, along the flow direction of thermal-arrest tube fluid, the distance between adjacent communicating pipe ever-reduced width
Degree is increasing.
It is found through experiments that, above-mentioned setting, ensure that and more excellent in process fluid flow reach that pressure is balanced faster.
Preferably, as shown in figure 1, the top of thermal-collecting tube 1 sets lens 3；The thermal-collecting tube 1 is built with working medium, the collection
Heat pipe is connected with import header and outlet header (not shown).Sunshine reaches lens through the transparent cover plate 4 at the top of casing 5
3, then by the focusing illumination of lens 3 on thermal-collecting tube 1, the working medium of thermal-collecting tube 1 is heated.
Preferably, the focus of the lens 3 is located at the center of thermal-collecting tube 1, such as pipe is located at the center of circle, and rhumbatron is located at
The intersection point of two diagonal lines.
Preferably, the lens 3 are Fresnel Lenses.
Preferably, the casing 5 is set in tabular.The working medium is conduction oil, water or other organic working mediums.
Preferably, the transparent cover plate 4 is clear glass.
The lens 3 are multiple, and a piece thermal-collecting tube 1 of each correspondence of lens 3, the adjacent lens 3 are connected, described every
One lens 3 include multistage, for example in the embodiment in figure 1, each lens 3 in three sections of settings, including top interlude and
The tilting section of interlude both sides is connected respectively.
Preferably, as shown in figure 3, the cross section of the thermal-collecting tube 1 is rhombus.
Although Fig. 3 does not show communicating pipe 2, preferred structure, the embodiment of Fig. 3 diamond structure thermal-collecting tube are used as
In also include communicating pipe 2.
Preferably, the line at two relative angles in the rhombus is perpendicular to transparent cover plate 4.
By setting diamond structure thermal-collecting tube 1 and thermal-collecting tube 1 being set into the line at two relative angles perpendicular to saturating
Bright cover plate 4, it is ensured that more surfaces of collector tubes can be absorbed to solar energy, so as to make full use of solar energy.
Preferably, each lens 3 are in two sections of settings, including tilting section 31 and 31.The tilting section 31 and 32 is along water chestnut
Two sides extension on the top of shape, as shown in Figure 4.
By being arranged such, it is ensured that be capable of the solar energy of thermal-arrest multiple directions, as shown in figure 4, so as to reach fully
Utilize solar energy.
Preferably, the focus of the tilting section 31 and 32 is located at the intersection point of two diagonal lines of rhombus.
Preferably, the four edges of rhombus are equal, four angles of rhombus are equal.
Preferably, setting inner fin 7 inside the thermal-collecting tube, the inner fin 7 connects the diagonal of rhombus, such as Fig. 5 institutes
Show.The inner fin 7 will be divided into multiple passage aisles 9 inside thermal-collecting tube 1, intercommunicating pore 8 be set on inner fin, so that adjacent
Passage aisle 9 communicates with each other.
By setting inner fin 7, multiple passage aisles 9 will be divided into inside thermal-collecting tube 1, further augmentation of heat transfer, but accordingly
Flow of fluid pressure increase.By setting intercommunicating pore 8, it is ensured that the connection between adjacent passage aisle 9, so that pressure
Fluid in big passage aisle can flow into the small passage aisle of neighbouring pressure, solve each small flow channels of inside of condensation end
9 pressure are uneven and the problem of excessive local pressure, so as to promote abundant flowing of the fluid in heat exchanger channels, lead to simultaneously
The setting of intercommunicating pore 8 is crossed, the pressure inside thermal-collecting tube is also reduced, improves heat exchange efficiency, while also improving thermal-collecting tube
Service life.
It is preferred that, along thermal-collecting tube 1 in fluid flow direction, the area of the intercommunicating pore 8 constantly increases.
Described intercommunicating pore 8 is circular configuration, along thermal-collecting tube 1 in fluid flow direction, the half of the circular configuration
Footpath constantly increases.
Because the fluid in along thermal-collecting tube 1 in the flow direction of fluid, thermal-collecting tube 1 constantly even evaporate by heat absorption, because
This make it that the pressure of thermal-collecting tube constantly increases, and because the presence of intercommunicating pore 8 so that the pressure distribution inside thermal-collecting tube 1
It is more and more uniform, therefore the area needs of intercommunicating pore are very big, constantly become greatly by setting, so that ensureing inside heat pipe
In the case of the uniform pressure of pressure, increase heat exchange area by connecting the change of hole area, so as to improve heat exchange efficiency.
It is preferred that, along thermal-collecting tube 1 in fluid flow direction, the continuous increased amplitude of the area of the intercommunicating pore 8
It is continuously increased.It is also the changing rule for meeting flowing pressure by being arranged such, further while reduction flow resistance, carries
High heat exchange efficiency.By being arranged such, by being that experiment finds that 9% or so heat exchange efficiency can be improved, while resistance is protected substantially
Hold constant.
It is preferred that, along thermal-collecting tube 1 in fluid flow direction, the distributed quantity of intercommunicating pore 8 is more and more, further excellent
Choosing, constantly increased amplitude is continuously increased the connection hole number.
It is identical with area reduction principle by the Distribution Principle of above-mentioned quantity, compared with connection hole number is identical, lead to
Distributed number is crossed to reduce circulation area.
Preferably, as shown in Figure 6,7, multiple rows of intercommunicating pore 8 is set on each inner fin, as shown in fig. 7, the multiple company
Through hole 8 is wrong row's structure.By mistake, row connects structure, can further improve heat exchange, reduces pressure.
Preferably, also including the device for pressure measurement 10 of measurement thermal-arrest pipe pressure.The device for pressure measurement 10 is connected
To thermal-collecting tube 1, by measuring the pressure in thermal-collecting tube 1, to check whether thermal-collecting tube 1 leaks, once leaking, then press
The measurement data of force measuring device 10 will be abnormal, then close the Fluid valve entered in thermal-collecting tube 1 in time.
Preferably, the heat collector also includes control system and valve, the control system carries out data company with valve
Connect, opening and closing and the size of valve flow for control valve.The control system carries out data with device for pressure measurement 10
Connection, for detecting the pressure that device for pressure measurement 10 is measured.Once the pressure of the device for pressure measurement 10 of control system detection
Less than predetermined value, then show pressure anomaly, it is likely that thermal-collecting tube 1 is leaked, now control system control valve is closed automatically
Close, forbid fluid to flow into thermal-collecting tube.Pass through above-mentioned automatic control function so that monitoring process realizes automation.
Connected between the thermal-collecting tube 1 by communicating pipe 2, preferably, the device for pressure measurement 10 with it is multiple
Any one of thermal-collecting tube 1 is attached.
By setting communicating pipe 2 so that the connection of multiple thermal-collecting tubes 1 is got up, once some thermal-collecting tube is leaked, then because
The reason for for connection, device for pressure measurement 10 can also detect pressure anomaly at any time, then can also automatically control Fluid valve closing,
Fluid is avoided to enter in heat exchanger tube.The quantity of device for pressure measurement 10 can be so reduced, only by one or quantity
Few device for pressure measurement, so as to realize the pressure detecting of all thermal-collecting tubes.
Preferably, the fluid first passes through the inlet header of thermal-collecting tube, each thermal-arrest is then entered by inlet header
Pipe 1.Described valve is arranged on fluid and entered on the pipeline of inlet header.It is automatic to close so when leakage is detected
Valve, then fluid cannot be introduced into inlet header, thermal-collecting tube is cannot be introduced into naturally.
Preferably, being vacuum structure in casing 5.
Preferably, the pressure on the measurement thermal-collecting tube 1 of device for pressure measurement 10 top.Mainly in the process of running,
Top is usually steam condition, and pressure is maximum.Once leaking, pressure change is obvious, so measurement is the most accurate.
Preferably, humidity measuring instrument can be used to replace device for pressure measurement 10.The humidity measuring instrument is set
Put in casing, humidity measuring instrument carries out data cube computation with control system, once fluid is leaked, then can enter in casing, when
The humidity of detection will be abnormal higher than certain numerical value, i.e. measurement data, then the stream that control system is closed into thermal-collecting tube 1 in time
Body valve.
Although the present invention is disclosed as above with preferred embodiment, 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, it can make various changes or modifications, therefore protection scope of the present invention should be with
Claim limited range is defined.
Claims (8)
1. a kind of solar plate heat collector, including casing, thermal-collecting tube, the casing top set transparent cover plate, casing bottom
Portion sets heat-insulation layer, and the thermal-collecting tube is arranged in casing, it is characterised in that the solar plate heat collector also includes wet
Measurement apparatus is spent, the humidity measuring instrument is arranged in casing, humidity measuring instrument carries out data cube computation, one with control system
Denier fluid is leaked, then can enter in casing, when the humidity of detection will be abnormal higher than certain numerical value, i.e. measurement data, then control
The Fluid valve that system is closed into thermal-collecting tube in time.
2. solar plate heat collector as claimed in claim 1, the thermal-collecting tube is side by side many, adjacent thermal-collecting tube
Between connected by communicating pipe.
3. solar plate heat collector as claimed in claim 1, the stream enters through the inlet header of thermal-collecting tube, then
Each thermal-collecting tube is entered by inlet header, described valve is arranged on fluid and entered on the pipeline of inlet header.
4. solar plate heat collector as claimed in claim 2, the direction extended along thermal-collecting tube, two adjacent thermal-arrests
Many communicating pipes are set between pipe.
5. solar plate heat collector as claimed in claim 4, along the flow direction of thermal-arrest tube fluid, adjacent connection
The distance between pipe constantly reduces.
6. solar plate heat collector as claimed in claim 5, along the flow direction of thermal-arrest tube fluid, adjacent connection
The distance between pipe ever-reduced amplitude is increasing.
7. the solar plate heat collector as described in one of claim 1-6, it is characterised in that the thermal-collecting tube is rhombus,
The line at two relative angles of the rhombus is perpendicular to transparent cover plate.
8. solar plate heat collector as claimed in claim 7, it is characterised in that the four edges of rhombus are equal, rhombus
Four angles are equal.
Priority Applications (1)
| 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 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610207840.4A CN105865051B (en) | 2016-04-05 | 2016-04-05 | Solar thermal collector capable of detecting leakage |
| CN201710123600.0A CN106949641B (en) | 2016-04-05 | 2016-04-05 | A kind of solar thermal collector that leakage is detected using humidity measuring instrument |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610207840.4A Division CN105865051B (en) | 2016-04-05 | 2016-04-05 | Solar thermal collector capable of detecting leakage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106949641A true CN106949641A (en) | 2017-07-14 |
| CN106949641B CN106949641B (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610207840.4A Expired - Fee Related CN105865051B (en) | 2016-04-05 | 2016-04-05 | Solar thermal collector capable of detecting leakage |
| 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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| Application Number | Title | Priority Date | Filing Date |
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| CN201610207840.4A Expired - Fee Related CN105865051B (en) | 2016-04-05 | 2016-04-05 | Solar thermal collector capable of detecting leakage |
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| Country | Link |
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| CN (2) | CN105865051B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945513A (en) * | 2018-08-05 | 2019-06-28 | 青岛鑫众合贸易有限公司 | A kind of trough type solar heat-collector system of balance tube diameter setting |
| CN109945517A (en) * | 2018-08-05 | 2019-06-28 | 青岛鑫众合贸易有限公司 | A kind of trough type solar heat-collector system of weighing apparatus pressure |
| CN111707011A (en) * | 2018-08-03 | 2020-09-25 | 青岛佰腾科技有限公司 | Design method of condensation end of temperature equalizing pipe of solar system |
| CN112113353A (en) * | 2018-08-05 | 2020-12-22 | 青岛佰腾科技有限公司 | Heat collector constant-pressure tube spacing optimization design method |
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| CN110806017B (en) * | 2018-08-05 | 2021-07-16 | 国网山东省电力公司无棣县供电公司 | Pressure monitoring groove type solar heat collector system |
| CN111156426A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Liquefied hydrocarbon spherical tank leakage protection device and method |
| 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 |
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| CN105865051A (en) | 2016-08-17 |
| CN106949641B (en) | 2018-02-06 |
| CN105865051B (en) | 2017-03-22 |
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