CN2924411Y - Telescopic joint flowway vacuum solar heat-collecting pipe - Google Patents

Telescopic joint flowway vacuum solar heat-collecting pipe Download PDF

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Publication number
CN2924411Y
CN2924411Y CNU2006200921036U CN200620092103U CN2924411Y CN 2924411 Y CN2924411 Y CN 2924411Y CN U2006200921036 U CNU2006200921036 U CN U2006200921036U CN 200620092103 U CN200620092103 U CN 200620092103U CN 2924411 Y CN2924411 Y CN 2924411Y
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CN
China
Prior art keywords
cap
tube
glass tube
fairlead
runner
Prior art date
Application number
CNU2006200921036U
Other languages
Chinese (zh)
Inventor
张寅啸
张辛衡
Original Assignee
张寅啸
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 张寅啸 filed Critical 张寅啸
Priority to CNU2006200921036U priority Critical patent/CN2924411Y/en
Application granted granted Critical
Publication of CN2924411Y publication Critical patent/CN2924411Y/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/40Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • 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
    • Y02E10/44Heat exchange systems

Abstract

The utility model relates to an expansion joint flow passage vacuum solar energy heat collection tube which is composed of an air-bleeding nozzle (1), a left end cover (2), a glass tube (3), a convoluted diaphragm (4), a metal tube (5), an O-shaped lock ring (6), a fixed press disc (7), an inner sealing plate (8), an outer sealing plate (9), a movable press disc (10), a nut (11), a right eduction tube (12), a right end cover (13), a left eduction tube (14) and a glue sealing groove (15).The utility model is characterized in that the convoluted diaphragm and the metal tube form the expansion joint flow passage, which is arranged in a transparent glass tube; the axis of the flow passage is coincided with the axis of the glass tube; the two ends of the glass tube are sealed by end covers. The eduction tube extends out from the end cover. The convoluted diaphragm compensates the axial length change of the metal tube and prevents the crack at the sealing points and the breakage of the glass tube caused by the thermal expansion at the axial direction. The space between the glass tube and the expansion flow passage is a vacuum state which has good heat-insulating effect, high thermal efficiency and frost prevention function, and so on. The heat collection tube has high pressure tolerance, is convenient to assemble and can be used to assemble solar energy collector of various purposes.

Description

Telescopic joint runner vacuum solar heat-collecting pipe
Technical field the utility model telescopic joint runner vacuum solar heat-collecting pipe relates to a kind of thermal-collecting tube that utilizes solar energy.
Background technology is present, existing dual-end metal flow passage thermal-collecting tube, and the problem of existence is cracking and bombing, the employing soft metal hot pressing envelope that has, the moderate ceramic scolder of the employing coefficient of expansion that has carries out sealing-in.It is different with the coefficient of expansion of glass that the cracking that causes in fact and the reason of bombing are not only metal, but also because the thermal-collecting tube axial dimension is big, the back metal tube that is heated is bigger than the absolute figure that glass tube expands, and has caused sealing-in place cracking and bombing.
It is clear glass that summary of the invention the utility model telescopic joint runner vacuum solar heat-collecting pipe purpose is to propose a kind of outer tube, in pipe be that the vacuum solar heat-collecting pipe of telescopic joint runner, purpose are to solve sealing-in place that glass tube and metal tube axial thermal expansion cause and ftracture and the bombing problem.Telescopic joint runner vacuum solar heat-collecting pipe is by the mouth of bleeding, left end cap, and glass tube, convoluted diaphragm, metal tube, O-ring seals, fixed platen, interior packing, outer packing, moveable platen, nut, (left and right) fairlead and right end cap are formed.Its principal character is that convoluted diaphragm and metal tube are formed the telescopic joint runner, the telescopic joint flow-path tube is arranged in the transparent glass tube, the dead in line of its axis and glass tube, the end cap sealing-in of glass tube two ends, the two ends of telescopic joint runner are connected to fairlead, and fairlead is drawn from end cap.Between end cap and the fairlead is that vacuum seal is connected, and is that vacuum seal is connected between end cap and the glass tube, is the state of vacuum between glass tube and the flexible runner.
Be provided with O shape groove on end cap, O-ring seals is arranged in the O shape groove, is marked with vacuum compound in the O shape groove, and chamfering is established at end cap straight flange edge.End cap is enclosed in the two ends of glass tube, the end face of glass tube and the O shape groove on the end cap match, the end face of glass tube aligns with O-ring seals, fairlead is drawn from end cap central bore, fixed platen is fixed on the fairlead, be lined with interior packing between fixed platen and end cap, moveable platen is enclosed within on the fairlead, packing outside being lined with between moveable platen and end cap.On fairlead, be provided with screw thread, nut is spun on the screw thread, fastening with nut, moveable platen and fixed platen are pressed on interior packing and outer packing on the inside and outside two sides of capping, interior packing and outer packing have sealed the gap between end cap and the fairlead, realized that end cap is connected with vacuum seal between the fairlead, when nut is fastening, fairlead outwards screws out, flexible runner is stretched, the stretching runner produces tension force, and tension force acts between the two end cap, under the tension force effect, two end cap and glass tube end face clamp O-ring seals, and end cap and glass tube contact-making surface are bonding with fluid sealant, like this, have realized that just vacuum seal is connected between end cap and the glass tube termination.On left end cap, be provided with the mouth of bleeding, vacuumize, when vacuum reaches standard, seal the mouth of bleeding, keep the vacuum state between glass tube and the flexible runner by the mouth of bleeding.
Glass tube is made with clear glass; The metal circular tube that runner adopts materials such as copper, aluminium, stainless steel or iron and steel to make, or metal fin pipe, the surface of pipe scribbles solar energy absorbing paint, and runner also can adopt nonmetallic materials to make; O-ring seals, interior packing and outer packing are made with vacuum sealing material, as materials such as soft metal, vacuum silica gel; Telescopic joint adopts elastic corrugated diaphragm, also can adopt bellows; End cap adopts encapsulants such as metal, glass or ceramic material to make.
When solar radiation is to telescopic joint runner vacuum solar heat-collecting pipe, light sees through the region of no pressure in glass tube and the glass tube, shine on the telescopic joint runner, the telescopic joint runner is heated temperature and raises, because between telescopic joint runner and the glass tube is vacuum state, do not have the conduction of convection of heat and heat under vacuum state, the heat of telescopic joint runner is just passed to glass tube by radiation, so the glass tube temperature rise is not high.In the axial direction, the axial dimension of metal tube is big, and after being heated, metal tube and glass tube not only thermal coefficient of expansion differ greatly, and temperature also differs greatly, so metal tube is bigger than the absolute figure that the line of glass tube on axis expands.Owing on metal tube, be connected to convoluted diaphragm, convoluted diaphragm generation deformation produces displacement, and convoluted diaphragm has compensated the variation of metal tube axial length, like this, the increase of metal tube axial length can not produce huge stress, has prevented that the sealing place cracking that axial thermal expansion causes from bursting phenomenon with glass tube.Diametrically, there is the gap between end cap and the fairlead, end cap is than low with the temperature of fairlead, the absolute figure that be radially expanded and the glass tube of end cap are radially expanded is more or less the same, and between glass tube end face tube head and end cap, be lined with soft O-ring seals, be radially expanded and can not cause glass tube and end cap sealing-in place cracking, if end cap adopts pottery or glass to make, then sealing-in place more can not ftractureed.
If do not establish convoluted diaphragm on metal tube, the back metal tube that is heated increases, and glass tube length is almost constant, and then the metal tube of Zeng Changing can split glass tube and end cap sealing-in place top, even makes the glass tube fragmentation.
It is glass tube that telescopic joint metal flow passage vacuum solar heat-collecting pipe adopts outer tube, and interior pipe is vacuum state between two pipes for the structure of flexible runner, has high insulating effect, thermal efficiency height, function such as antifreeze, this thermal-collecting tube pressure-bearing height, easy for installation, can assemble the solar thermal collector of various uses.
Description of drawings
Fig. 1 is convoluted diaphragm telescopic joint metal flow passage (thick pipe) vacuum solar heat-collecting pipe structural representation.
Fig. 2 is Bellows expansion joint metal flow passage (thick pipe) vacuum solar heat-collecting pipe structural representation.
Fig. 3 is convoluted diaphragm end cap telescopic joint metal flow passage (finned tube) vacuum solar heat-collecting pipe structural representation.
In Fig. 1,1 is the mouth of bleeding, and 2 is left end cap, and 3 is glass tube, and 4 is convoluted diaphragm, and 5 is metal tube, 6 is O-ring seals, and 7 is fixed platen, and 8 is interior packing, and 9 is outer packing, and 10 is moveable platen, 11 is nut, and 12 is right fairlead, and 13 is right end cap, and 14 is left fairlead, and 15 is the glue sealing groove.
In Fig. 2,1 is the mouth of bleeding, and 2 is left end cap, and 3 is glass tube, and 5 is metal tube, and 6 is O-ring seals, 7 is fixed platen, and 8 is interior packing, and 9 is outer packing, and 10 is moveable platen, and 11 is nut, 12 is right fairlead, and 13 is right end cap, and 14 is left fairlead, and 15 is the glue sealing groove, and 16 is bellows.
In Fig. 3,1 is the mouth of bleeding, and 2 is left end cap, and 3 is glass tube, and 5 is metal tube, and 6 is O-ring seals, 7 is fixed platen, and 8 is interior packing, and 9 is outer packing, and 10 is moveable platen, and 11 is nut, 12 is right fairlead, and 14 is left fairlead, and 15 is the glue sealing groove, and 17 is the convoluted diaphragm end cap, and 18 is fin.
The specific embodiment
Embodiment 1 convoluted diaphragm telescopic joint metal flow passage (thick pipe) vacuum solar heat-collecting pipe, its structure as shown in Figure 1, convoluted diaphragm 4 has been formed the telescopic joint runner with metal tube 5, right-hand member at metal tube connects right fairlead 12, left end at metal tube is provided with convoluted diaphragm 4, and convoluted diaphragm and left fairlead 14 join.Convoluted diaphragm telescopic joint runner is arranged within the glass tube 3, on (a left side, the right side) fairlead is provided with fixed platen 7, fairlead is from (a left side, the right side) end cap is drawn, the end cap sealing-in is at the two ends of glass tube, on end cap, be provided with O shape groove, in O shape groove, be lined with O-ring seals 6, the glass tube end face aligns with O-ring seals, packing 8 in being lined with respectively between end cap and the fixation clip is provided with screw thread on fairlead, nut 11 is spun on the fairlead, packing 9 and moveable platen 10 outside between nut and end cap, being lined with, be provided with the mouth 1 of bleeding on left end cap, there is a chamfering at the annular straight flange edge of end cap, and chamfering and glass tube surface constitute glue sealing groove 15.
When nut screwed, left fairlead and right fairlead were screwed out end cap, and packing and outer packing in moveable platen and fixed platen clamp are sealed between fairlead and the end cap.Back-out along with left fairlead and right fairlead, left end cap and right end cap clamp glass tube, the pressure of end cap and glass tube termination strengthens, under pressure, end cap and glass tube termination clamp O-ring seals, in O shape groove, be marked with vacuum compound,, realized the vacuum seal between end cap and glass tube like this scribbling vacuum compound on end cap and the glass tube contact-making surface and in the glue sealing groove.
On left end cap, be provided with the mouth of bleeding, bleed by the mouth of bleeding, after the space between glass tube and the metal tube is evacuated, the mouth of will bleeding sealing.
When solar radiation is to flexible runner vacuum solar heat-collecting pipe, metal tube is raise by rapid heating-up temperature, the metal tube temperature rise, and the glass tube temperature rise is low, and metal tube and glass tube not only thermal coefficient of expansion differ greatly, so metal tube is bigger than the absolute figure that glass tube expands.The axial dimension of metal tube is big, and is after being heated, bigger at the numerical value of axial expansion.Owing in metal tube one termination convoluted diaphragm is arranged, convoluted diaphragm produces distortion, and the convoluted diaphragm center produces displacement, has compensated the variation of metal tube axial length, has prevented that the metal tube axial expansion from causing the cracking of sealing place or glass tube to burst.
End cap can adopt metal, glass or ceramic material, the absolute figure that be radially expanded and the glass tube of end cap are radially expanded is more or less the same, and between tube head and end cap, be lined with soft O-ring seals, can not cause glass tube and end cap sealing-in place cracking, if end cap adopts pottery or glass to make, then sealing-in place more can not ftractureed.
In the present embodiment, the external diameter of metal tube is between 50mm--100mm, and the internal diameter of glass tube is than the big 5-10mm of external diameter of metal tube, the wall thickness of metal tube is 2-3mm, when wall thickness was 2mm, external diameter was 1.8 liters of every meter capable of storing water of metal tube of 50mm, and external diameter is 7.5 liters of every meter water storages of metal tube of 100mm.As seen, can store a considerable amount of water in the metal tube, adopt the solar water heater of this large diameter metal tube that water tank can be set.
Embodiment 2 Bellows expansion joint metal flow passages (thick pipe) vacuum solar heat-collecting pipe, its structure as shown in Figure 2, the structure difference from Example 1 is to have replaced convoluted diaphragm with bellows 16, bellows is contacted mutually with metal tube and has been formed the telescopic joint runner.Other structures and embodiment 1 are identical.When metal tube during at axial expansion, bellows axially is being compressed, and has compensated the variation of metal tube axial length, has prevented the generation of the cracking and the blasted pipe phenomenon of vacuum solar heat-collecting pipe.
Embodiment 3 convoluted diaphragm end cap telescopic joint metal flow passage (finned tube) vacuum solar heat-collecting pipes, its structure as shown in the figure, the structure difference from Example 1 is to have replaced large diameter metal circular tube with finned tube, finned tube is welded by fin 18 and thin metal pipe 5, replaced right end cap 13 and convoluted diaphragm 4 with convoluted diaphragm end cap 17, convoluted diaphragm end cap and metal tube have been formed the telescopic joint runner.Other structures and embodiment 1 are identical.Convoluted diaphragm end cap 17 has dual-use function, the end of one side sealed glass tube, eliminate the stress that the metal tube expanded by heating produces on the one hand, at that time during the metal tube expanded by heating, axial expansion makes convoluted diaphragm end cap 17 that deformation take place, therefore can not produce big stress, so just prevent because thermal expansion causes the cracking and the phenomenon of bombing to take place.Other structures and embodiment 1 are identical.

Claims (5)

1 one kinds of flexible runner vacuum solar heat-collecting pipes are by the mouth of bleeding (1), left end cap (2), glass tube (3), convoluted diaphragm (4), metal tube (5), 0 shape sealing ring (6), fixed platen (7), interior packing (8), outer packing (9), moveable platen (10), nut (11), right fairlead (12), right end cap (13), fairlead (14) and glue sealing groove (15) are formed, it is characterized in that convoluted diaphragm and metal tube composition telescopic joint runner, the telescopic joint runner is arranged within the glass tube, the dead in line of its axis and glass tube, between end cap and the fairlead is that vacuum seal is connected, between end cap and the glass tube is that vacuum seal is connected, be the state of vacuum between glass tube and the flexible runner, on fairlead, be provided with fixed platen, the two ends of flexible runner join with right fairlead and left fairlead respectively, the end cap sealing-in is at the two ends of glass tube, fairlead is drawn from end cap, on end cap, be provided with O shape groove, in O shape groove, be lined with O-ring seals, the glass tube end face aligns with O-ring seals, be lined with interior packing between end cap and the fixation clip respectively, on fairlead, be provided with screw thread, nut is spun on the fairlead, packing and moveable platen outside between nut and end cap, being lined with, on left end cap, be provided with the mouth of bleeding, there is a chamfering at the annular straight flange edge of end cap, and chamfering and glass tube surface constitute the glue sealing groove.
2 flexible runner vacuum solar heat-collecting pipes according to claim 1 is characterized in that said telescopic joint runner, convoluted diaphragm is arranged on an end of metal tube, left side fairlead links to each other with convoluted diaphragm, one end of metal tube links to each other with right fairlead, convoluted diaphragm can replace with bellows, when replacing with bellows, bellows is contacted mutually with metal tube and is formed the telescopic joint runner.
3 flexible runner vacuum solar heat-collecting pipes according to claim 1 is characterized in that described right end cap can replace with the convoluted diaphragm end cap, and convoluted diaphragm end cap metal tube is formed the telescopic joint runner.
4 flexible runner vacuum solar heat-collecting pipes according to claim 1 is characterized in that said metal tube can replace with finned tube.
5 flexible runner vacuum solar heat-collecting pipes according to claim 1 is characterized in that described end cap available metal, glass or ceramic material.
CNU2006200921036U 2006-07-15 2006-07-15 Telescopic joint flowway vacuum solar heat-collecting pipe CN2924411Y (en)

Priority Applications (1)

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CNU2006200921036U CN2924411Y (en) 2006-07-15 2006-07-15 Telescopic joint flowway vacuum solar heat-collecting pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009121987A1 (en) * 2008-04-03 2009-10-08 Abengoa Solar New Technologies, S.A. Sealed mechanical connection between glass and metal for receiver tubes used in solar plants
WO2010043743A2 (en) * 2008-10-14 2010-04-22 Iberdrola Ingeniería Y Construcción, S. A. U. Improved solar receiver for parabolic-trough collectors
WO2011051296A3 (en) * 2009-10-27 2012-05-24 Schott Solar Ag Absorber tube
CN102564170A (en) * 2012-02-29 2012-07-11 茂名重力石化机械制造有限公司 Tube type heat exchanger
CN102563931A (en) * 2012-02-28 2012-07-11 常州大学 Groove type condensation solar heat collecting tube with compensation sealing structure and assembling process of groove type condensation solar heat collecting tube
CN102706003A (en) * 2012-07-13 2012-10-03 周雄峰 Flat plate type solar collector
CN103277911A (en) * 2013-05-08 2013-09-04 南京溧马新能源科技有限公司 Detachable straight-through type solar vacuum heat collecting tube
CN104748402A (en) * 2013-12-30 2015-07-01 北京有色金属研究总院 Novel-structure high-temperature vacuum solar heat collection tube
CN109488816A (en) * 2018-12-29 2019-03-19 沈炜 Water-saving heating coil
CN109579311A (en) * 2018-12-29 2019-04-05 沈炜 Water heater saves water conduit

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2332490A1 (en) * 2008-04-03 2010-02-05 Abengoa Solar New Technologies, S.A. Sealed mechanical connection between glass and metal for receiver tubes used in solar plants
WO2009121987A1 (en) * 2008-04-03 2009-10-08 Abengoa Solar New Technologies, S.A. Sealed mechanical connection between glass and metal for receiver tubes used in solar plants
WO2010043743A2 (en) * 2008-10-14 2010-04-22 Iberdrola Ingeniería Y Construcción, S. A. U. Improved solar receiver for parabolic-trough collectors
WO2010043743A3 (en) * 2008-10-14 2010-09-02 Iberdrola Ingeniería Y Construcción, S. A. U. Improved solar receiver for parabolic-trough collectors
WO2011051296A3 (en) * 2009-10-27 2012-05-24 Schott Solar Ag Absorber tube
CN102563931A (en) * 2012-02-28 2012-07-11 常州大学 Groove type condensation solar heat collecting tube with compensation sealing structure and assembling process of groove type condensation solar heat collecting tube
CN102563931B (en) * 2012-02-28 2013-08-21 常州大学 Groove type condensation solar heat collecting tube with compensation sealing structure and assembling process of groove type condensation solar heat collecting tube
CN102564170A (en) * 2012-02-29 2012-07-11 茂名重力石化机械制造有限公司 Tube type heat exchanger
CN102706003A (en) * 2012-07-13 2012-10-03 周雄峰 Flat plate type solar collector
CN103277911A (en) * 2013-05-08 2013-09-04 南京溧马新能源科技有限公司 Detachable straight-through type solar vacuum heat collecting tube
CN103277911B (en) * 2013-05-08 2015-07-08 南京溧马新能源科技有限公司 Detachable straight-through type solar vacuum heat collecting tube
CN104748402A (en) * 2013-12-30 2015-07-01 北京有色金属研究总院 Novel-structure high-temperature vacuum solar heat collection tube
CN104748402B (en) * 2013-12-30 2017-01-18 北京有色金属研究总院 Novel-structure high-temperature vacuum solar heat collection tube
CN109488816A (en) * 2018-12-29 2019-03-19 沈炜 Water-saving heating coil
CN109579311A (en) * 2018-12-29 2019-04-05 沈炜 Water heater saves water conduit
CN109488816B (en) * 2018-12-29 2021-01-08 浙江繁丰皮革有限公司 Water-saving heating pipe
CN109579311B (en) * 2018-12-29 2021-01-19 苏州衡创信息科技有限公司 Water-saving conduit of water heater

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Granted publication date: 20070718