CN107255369A - A kind of composite getter for metal direct connection solar energy vacuum tube - Google Patents

A kind of composite getter for metal direct connection solar energy vacuum tube Download PDF

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Publication number
CN107255369A
CN107255369A CN201710622066.8A CN201710622066A CN107255369A CN 107255369 A CN107255369 A CN 107255369A CN 201710622066 A CN201710622066 A CN 201710622066A CN 107255369 A CN107255369 A CN 107255369A
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China
Prior art keywords
getter
agent
nonevaporable
evaporable
ring
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CN201710622066.8A
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CN107255369B (en
Inventor
杨兵
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NANJING CHENGYUAN SOLAR HEATING Co Ltd
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NANJING CHENGYUAN SOLAR HEATING Co Ltd
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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
    • Y02E10/44Heat exchange systems

Abstract

The invention discloses a kind of composite getter for metal direct connection solar energy vacuum tube, including evaporable air-absorbing agent, non-nonevaporable getter agent and getter support, evaporable air-absorbing agent is connected by getter support with non-nonevaporable getter agent and evaporable air-absorbing agent and non-nonevaporable getter agent are arranged concentrically;Evaporable air-absorbing agent includes ring and evaporable getter alloys powder, ring includes inner ring and outer ring, inner ring is arranged on the inside of outer ring, the top of inner ring and the top of outer ring are connected to each other to form the c-type cavity of bottom end opening, and evaporable getter alloys powder is compressed in the c-type cavity in the middle of the inner ring and outer ring;The present invention has rate of air sucked in required big, service life is long, so as to be effectively guaranteed layer vacuum, simultaneously because evaporable air-absorbing agent is used as carrier using the ring of major diameter, produced barium film can be formed uniformly in pipe internal surface, and block the bellows local ambient in straight-through metal tube, the vacuum of thermal-collecting tube is shown and plays fine effect.

Description

A kind of composite getter for metal direct connection solar energy vacuum tube
Technical field
The present invention relates to a kind of getter, and in particular to a kind of composite aspirator for metal direct connection solar energy vacuum tube Agent.
Background technology
In the prior art, common metal direct connection solar energy vacuum tube judges the sole criterion of vacuum in pipe, is in pipe One 2 square centimeters or so getter of addition barium film that evapotranspires in inwall center shows, the suction of original metal straight-through vacuum pipe Gas agent indicates that the barium film mirror product evapotranspired out is small, and the ability of the gas such as hydrogen, nitrogen is weaker in adsorption tube, and barium film mirror is easy to disappear Lose, so as to lose chemical mode gettering ability, vacuum increases and declined over time in pipe.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of with higher peace for above-mentioned the deficiencies in the prior art The composite getter for metal direct connection solar energy vacuum tube of performance and absorption property is filled, this is used for metal direct connection solar can be true The composite getter manufacturing property of blank pipe is stable, and consistency of barium yield is good, and rate of air sucked in required is big in Evapotranspiration Processes, is adapted to produce in enormous quantities
To realize above-mentioned technical purpose, the technical scheme that the present invention takes is:
A kind of composite getter for metal direct connection solar energy vacuum tube, including evaporable air-absorbing agent, non-nonevaporable getter Agent and getter support, the evaporable air-absorbing agent is connected by getter support with non-nonevaporable getter agent and the evaporable is inhaled Gas agent and non-nonevaporable getter agent are arranged concentrically.
As further improved technical scheme of the present invention, the evaporable air-absorbing agent includes ring and evaporable air-absorbing agent Alloyed powder, the ring includes inner ring and outer ring, and the inner ring is arranged on the inside of outer ring, the top of the inner ring and outer ring Top is connected to each other to form the c-type cavity of bottom end opening, the evaporable getter alloys powder be compressed on the inner ring and In c-type cavity in the middle of outer ring, the height of the evaporable getter alloys powder is less than the depth of the c-type cavity.
As further improved technical scheme of the present invention, the evaporable getter alloys powder includes barium aluminium powder and nickel Powder.
As further improved technical scheme of the present invention, barium aluminium powder and nickel powder in the evaporable getter alloys powder Ratio be 1:1, the barium aluminium powder includes 53.5% barium and 46.5% aluminium.
As further improved technical scheme of the present invention, the non-nonevaporable getter agent include non-nonevaporable getter agent band, Non- nonevaporable getter agent support and non-nonevaporable getter agent back-up ring, the non-nonevaporable getter agent band are wrapped in the non-nonevaporable getter agent The periphery of support, the non-nonevaporable getter agent back-up ring is set in the outer surface of the non-nonevaporable getter agent band and the non-steaming Getter back-up ring is dissipated to be fixedly connected with the non-nonevaporable getter agent support.
As further improved technical scheme of the present invention, the non-nonevaporable getter agent support includes from top to bottom successively connecting Cylindrical straight section, the flat side section in bottom and the cylindrical flange section connect, the cylindrical straight section, the flat side section in bottom and cylindrical flange section are Integrative-structure, the surface of the flat side section in bottom is provided with multiple circumferential apertures, and the non-nonevaporable getter agent band is wrapped in described outer The upper surface of the flat side section in middle lower section and the bottom of circle straight section.
As further improved technical scheme of the present invention, the non-nonevaporable getter agent band includes base band and non-suction of evapotranspiring Gas agent alloy muffin, the non-nonevaporable getter agent alloy muffin is compressed on the tow sides of the base band, the non-nonevaporable getter Agent band is formed by the base band pitch of the laps for being suppressed with non-nonevaporable getter agent alloy muffin, and the length of run of the base band is 1m~10m.
As further improved technical scheme of the present invention, the non-nonevaporable getter agent alloy muffin includes zirconium, vanadium and iron.
As further improved technical scheme of the present invention, the non-nonevaporable getter agent alloy muffin by 72% zirconium and 28% vanadium and Tie Tong crosses vacuum powder smelting process and the compacting of ball powder-grinding method is formed.
As further improved technical scheme of the present invention, the getter support is 2, and the getter support is L Type stainless steel band, one end of the L-type stainless steel band is connected and the other end and non-nonevaporable getter agent with evaporable air-absorbing agent Connection, the cover glass tube of the evaporable air-absorbing agent, non-nonevaporable getter agent and metal direct connection solar energy vacuum tube be arranged concentrically and The evaporable air-absorbing agent and non-nonevaporable getter agent are held within the straight-through metal tube inside cover glass tube by welding manner On, the vertical range of the outer ring of the ring and the cover glass tube is 0.5~15mm.
The present invention compared with prior art, has the advantages that:
The composite getter that the present invention is used improves the product speed of exhaust and rate of air sucked in required, and ring is more beneficial for barium film true Activation of evapotranspiring in blank pipe, while using composite getter to improve thermal-arrest with vacuum in the interlayer of long sustaining vacuum tube Interbedded vacuum performance is managed, extends the service life of vacuum tube more than 20 years.The present invention has rate of air sucked in required big, service life It is long, so that layer vacuum is effectively guaranteed, simultaneously because evaporable air-absorbing agent is used as carrier, institute using the ring of major diameter The barium film of generation can be formed uniformly in pipe internal surface, and the bellows local ambient in straight-through metal tube is blocked, and utilize ripple The high frequency of line area under control domain space evapotranspires barium film, and is not take up the inner tube space of planes that absorbs heat.Barium film mirror covers on the outer of bellows simultaneously Surface, outward appearance be can't see.Light at former bellows is set to be reflected back by barium film mirror, heat at reduction corrugated pipe connector is effectively protected Protect bellows and sealing joint.Barium film mirror is shown to the vacuum of metal direct connection solar energy vacuum tube plays fine effect, passes through The color of barium film mirror can determine whether inside cover glass tube whether vacuum.The present invention utilizes the large area barium film energy of evaporable air-absorbing agent The gases such as enough hydrogen, the nitrogen handled by chemical mode in vacuum tube effective for a long time, while nonevaporable getter uses thing Reason mode largely absorbs gas, so that the big speed of evacuation, rate of air sucked in required are reached, vacuum in the guarantee pipe stablized for a long time.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of ring of the present invention.
Fig. 3 is the partial enlarged drawing of ring and evaporable getter alloys powder in Fig. 2.
Fig. 4 is the structural representation of non-nonevaporable getter agent of the invention.
Fig. 5 is the pitch of the laps schematic diagram of non-nonevaporable getter agent band of the invention.
Fig. 6 is the part schematic diagram of the non-nonevaporable getter agent support of the present invention.
Fig. 7 is the non-nonevaporable getter agent of prior art and the non-nonevaporable getter agent contrast schematic diagram of the present invention.
Fig. 8 is the conventional vacuum getter of prior art and the composite getter contrast schematic diagram of the present invention.
Fig. 9 is the evaporable air-absorbing agent of prior art and the evaporable air-absorbing agent injection direction contrast schematic diagram of the present invention.
Embodiment
The embodiment of the present invention is further illustrated below according to Fig. 1 and Fig. 9:
Present disclosure is to use composite getter, can be for a long time using the large area barium film 20 of evaporable air-absorbing agent The gases such as effective hydrogen, the nitrogen handled by chemical mode in vacuum tube, while nonevaporable getter 2 uses physics mode (in vacuum device vacuum exhaust, the solid oxidation film on surface is decomposed getter, into metal and the product of gas, To internal diffusion, highly active cleaning metal surface is produced, is reacted with gas and plays a part of air-breathing) a large amount of absorptions Gas, so that the big speed of evacuation, rate of air sucked in required are reached, vacuum in the guarantee pipe stablized for a long time, using large area air-breathing barium film 20 Metal straight-through vacuum pipe the life-span term of validity up to more than 20 years.Concrete technical scheme is as follows:
Referring to Fig. 1, a kind of composite getter for metal direct connection solar energy vacuum tube, including it is evaporable air-absorbing agent 1, non- Nonevaporable getter agent 2 and getter support 3, the bottom of the evaporable air-absorbing agent 1 pass through getter support 3 and non-nonevaporable getter agent 2 top connection and the evaporable air-absorbing agent 1 and non-nonevaporable getter agent 2 is arranged concentrically.Referring to Fig. 1, the nonevaporable getter agent 1 Vertical range G between non-nonevaporable getter agent 2 is 1~10mm.The bottom of the evaporable air-absorbing agent 1 illustrated in the present embodiment is The left end face of evaporable air-absorbing agent 1 in Fig. 1, the top of non-nonevaporable getter agent 2 is the right side of the non-nonevaporable getter agent 2 in Fig. 1 Side end face, wherein the term such as " top ", " bottom " can change description according to different directions.
In the present embodiment, referring to Fig. 2 and Fig. 3, a figures are the A-A of b figures in Fig. 2 sectional views in Fig. 2, and the evaporable is inhaled Gas agent 1 includes ring 4 and evaporable getter alloys powder 7, and the ring 4 includes inner ring 5 and outer ring 6, and the inner ring 5 is arranged on The inside of outer ring 6, the top (equivalent to the right-hand member in Fig. 2 on a figures direction) of the inner ring 5 and the top of outer ring 6 are (equivalent to figure Right-hand member in 2 on a figures direction) it is connected to each other to form the c-type cavity of bottom end opening, the evaporable getter alloys powder 7 It is compressed in the c-type cavity in the middle of the inner ring 5 and outer ring 6, the height of the evaporable getter alloys powder 7 is less than the C Evaporable getter alloys powder 7 is embedded between the inner ring 5 and outer ring 6 in the depth of type cavity, Fig. 3, H sizes be 1.5~ 2mm。
In the present embodiment, the evaporable getter alloys powder 7 includes barium aluminium powder and nickel powder.
In the present embodiment, the ratio of barium aluminium powder and nickel powder in the evaporable getter alloys powder 7 is 1:1, the barium Aluminium powder includes 53.5% barium and 46.5% aluminium.The preparation method is preferably:Raw material barium 53.5%, aluminium 46.5% are taken, is passed through Vacuum melting, then ball powder-grinding are mixed with metal nickel powder vacuum, ratio 1:1;Ring is molded using stamping parts;Then through alloyed powder The big ring barium alumel of metal direct connection solar energy vacuum heat collection pipe specific complex type that isostatic cool pressing technique produces the present invention is inhaled Gas agent.The appearance and size of evaporable air-absorbing agent 1 and technical parameter are shown in Table one.
Table one:The evaporable air-absorbing agent appearance and size and technical parameter of the present invention.
In the present embodiment, referring to Fig. 4, the non-nonevaporable getter agent 2 includes non-nonevaporable getter agent band 8, non-nonevaporable getter Agent support 9 and non-nonevaporable getter agent back-up ring 10, the non-nonevaporable getter agent band 8 are wrapped in the non-nonevaporable getter agent support 9 Periphery, the non-nonevaporable getter agent back-up ring 10 be set in the outer surface of the non-nonevaporable getter agent band 8 and it is described it is non-steam Getter back-up ring 10 is dissipated to be fixedly connected with the non-nonevaporable getter agent support 9.It is to prevent from steaming using non-nonevaporable getter agent back-up ring 10 When dissipating the activation of type getter 1, vacuum barium film 20 is ejected into the non-surface of nonevaporable getter agent band 8.Fig. 5 is non-nonevaporable getter agent The structural representation of band 8.
In the present embodiment, referring to Fig. 6, a figures in Fig. 6 are the top view of the b figures in Fig. 6, the non-nonevaporable getter agent branch Frame 9 includes cylindrical straight section 11, the flat side section 12 in bottom and the cylindrical flange section 13 being from top to bottom sequentially connected, the cylindrical straight flange Section 11, the flat side section 12 in bottom and cylindrical flange section 13 are structure as a whole, and the surface of the flat side section 12 in bottom is provided with multiple circumference Hole 14, the flat side section 12 in middle lower section and the bottom that the non-nonevaporable getter agent band 8 is wrapped in the cylindrical straight section 11 Upper surface.The effect of circumferential apertures 14 is the increase in non-nonevaporable getter agent band 8 and outside flow area, when being more beneficial for exhaust The gas outflow of the releasing of non-nonevaporable getter agent band 8 is waited, it is also square by the runner of circumferential apertures 14 after vacuum is formed in pipe Non- nonevaporable getter agent band 8 absorb foreign gas.Circumferential apertures 14 are used for the non-air-extraction function of nonevaporable getter agent 2, enhancing pumping Effect.
In the present embodiment, scheme referring to b in Fig. 7, a figure in Fig. 7 above b figures is the top view of a following figure, institute Stating non-nonevaporable getter agent band 8 includes base band 15 and non-nonevaporable getter agent alloy muffin 16, the non-nonevaporable getter agent alloyed powder Cake 16 is compressed on the tow sides of the base band 15, and the non-nonevaporable getter agent band 8 is by being suppressed with non-nonevaporable getter agent alloy The pitch of the laps of base band 15 of muffin 16 is formed, and the length of run of the base band 15 is 1m~10m.As shown in figure 5, nonevaporable getter 2 use strips, and non-nonevaporable getter agent band 8 is rolled into a ring.So add non-nonevaporable getter agent alloy muffin 16 Getter surface is accumulated, and multiple circumferential apertures 14 that the surface of the flat side section 12 in bottom of non-nonevaporable getter agent support 9 is provided with promote non-evapotranspire The exposed surface area of getter band 8 is 120~160 ㎝2, area be all getters of conventional scheme (using 18 45A getters as Example) 15~20 times;The weight alloy of getter has reached 6~14 grams, is more than 3 times of conventional suction agent.The speed of exhaust is Common 15~20 times, gettering rate is increased on the premise of getter capacity is ensured.
In the present embodiment, the non-nonevaporable getter agent alloy muffin 16 includes zirconium, vanadium and iron.
In the present embodiment, the non-nonevaporable getter agent alloy muffin 16 is excessively true by 72% zirconium and 28% vanadium and Tie Tong Empty powder fusion metallurgy method and the compacting of ball powder-grinding method are formed.The preparation method is preferably:Zirconium 72%, vanadium and iron account for 28%, through true Empty powder fusion metallurgy, then the non-nonevaporable getter agent supports 9 of ball powder-grinding compacting are molded using stamping parts;Then it is cold etc. quiet through alloyed powder Pressure technique produces the big ring barium alumel getter of metal direct connection solar energy vacuum heat collection pipe specific complex type of the present invention.Should The appearance and size of nonevaporable getter 2 and technical parameter are shown in Table three.
The getter surface of the common non-nonevaporable getter agent of in the market accumulates very small, the minor diameter that air-breathing muffin can only be compressed in In ring, and the non-nonevaporable getter agent 2 of the present invention uses strips, and tow sides compacting is (non-in the tow sides pressure of base band Nonevaporable getter agent alloy muffin 16) air-breathing muffin, getter surface product greatly improves, can fast and effectively gas in absorption tube, The speed of evacuation and rate of air sucked in required are more than market usual products.
Table three:The nonevaporable getter appearance and size and activation condition of the present invention.
In the present embodiment, the getter support 3 is 2, and the getter support 3 is L-type stainless steel band, the L One end of type stainless steel band is connected with evaporable air-absorbing agent 1 and the other end is connected with non-nonevaporable getter agent 2, referring to the b in Fig. 8 Figure or Fig. 9 in b figure, the cover glass of the evaporable air-absorbing agent 1, non-nonevaporable getter agent 2 and metal direct connection solar energy vacuum tube Pipe 22 is arranged concentrically and the evaporable air-absorbing agent 1 and non-nonevaporable getter agent 2 are held within cover glass tube by welding manner On straight-through metal tube 21 inside 22, the vertical range L of the outer ring 6 of the ring 4 and the cover glass tube 22 is 0.5~15mm (referring to b in Fig. 8).
The present invention principle be:By the getter ring 4 of large area, activate and steam in the straight-through exhaust process of metal tube 21 Type getter 1 is dissipated, so that in the inner surface of cover glass tube 22 and the formation bimirror of bellows 23 face barium film 20 so that in cover glass tube 22 Vacuum reach 5*10-6More than pa.The face of evapotranspiring is conventional products more than 20 times.It follows that metal direct connection solar vacuum collection The barium evaporable air-absorbing agent 1 used in heat pipe can maintain layer vacuum well in the thermal-collecting tube course of work.
A figures and b figures in Fig. 7 are the nonevaporable getters of in the market, it can be seen that the common of prior art non-is evapotranspired The getter surface product of getter (the common muffin getter 18 of b figures in the common pill type getter 17 of a figures, Fig. 7 in Fig. 7) is non- Often small, in the minor diameter ring that air-breathing muffin can only be compressed in, and the non-nonevaporable getter agent 2 (c schemes in Fig. 7) of the present invention uses band Form, metal band (base band 15) tow sides compacting air-breathing muffin (non-nonevaporable getter agent alloy muffin 16), getter surface product Greatly improve, can fast and effectively gas in absorption tube, the speed of evacuation and rate of air sucked in required are more than market usual products.
A figures in Fig. 8 are that the b figures in conventional vacuum air-breathing indicator, Fig. 8 are getter barium film of the invention.In Fig. 8 A figures evapotranspire out the circle 19 of a diameter 30 on the surface of cover glass tube 22.And the evaporable air-absorbing agent 1 of the composite getter of the present invention The barium film 20 ejected can block the bellows 23 in pipe, form the minute surface barium film 20 of a cylindrical outer surface.Evaporable Between the internal diameter of getter 1 and cover glass tube 22 apart from L be 0.5mm~15mm.Minute surface length of evapotranspiring M is 60~80mm, this hair The effective area of barium film 20 that bright composite getter is ejected is common 20 times;
Referring to Fig. 9, a figures in Fig. 9 are that the b figures in the getter of in the market, Fig. 9 are composite aspirator of the invention Agent, by comparison diagram 9 it can be seen that the vacuum suction indicator of prior art pipe surface can only be ejected in cover glass tube 22 The barium film mirror of one very small diameter, and evaporable air-absorbing agent of the present invention 1, the barium film 20 ejected can be covered outside bellows 23 Surface and the inner surface of cover glass tube 22, the exposed surface area of barium film 20 are big, and gettering ability is stronger.A in wherein Fig. 9 is existing skill B in the injection direction of the evaporable air-absorbing agent of art, Fig. 9 is the evaporable air-absorbing agent injection direction of the present invention.
The present invention activates big ring type evaporable air-absorbing agent, the barium film that evaporable air-absorbing agent 1 is activated out by high frequency coil 20 eject at the opening of c-type cavity, and barium film 20 is by the partial occlusion of bellows 23 in pipe, and the table in cover glass tube 22 Face and the surface of bellows 23 form bimirror face barium film.The injection direction of the evaporable air-absorbing agent 1 of composite getter of the present invention is two Side pipe end (is sprayed) to the direction where non-nonevaporable getter agent 2, and the barium film 20 ejected can be completely covered in cover glass tube 22 Pipe surface and the outer surface of bellows 23 and part metals inner tube, by the barium film 20 exposed to outer surface, enhance air-breathing energy Power, while effective ensure vacuum life in pipe, vacuum life was up to more than 20 years.
Protection scope of the present invention includes but is not limited to embodiment of above, and protection scope of the present invention is with claims It is defined, any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement each fall within the present invention's Protection domain.

Claims (10)

1. a kind of composite getter for metal direct connection solar energy vacuum tube, it is characterised in that:Including evaporable air-absorbing agent, non- Nonevaporable getter agent and getter support, the evaporable air-absorbing agent are connected and described by getter support with non-nonevaporable getter agent Evaporable air-absorbing agent and non-nonevaporable getter agent are arranged concentrically.
2. the composite getter according to claim 1 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described Evaporable air-absorbing agent includes ring and evaporable getter alloys powder, and the ring includes inner ring and outer ring, and the inner ring is set Inside in outer ring, the top of the inner ring and the top of outer ring are connected to each other to form the c-type cavity of bottom end opening, described Evaporable getter alloys powder is compressed in the c-type cavity in the middle of the inner ring and outer ring, the evaporable getter alloys powder Height be less than the c-type cavity depth.
3. the composite getter according to claim 2 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described Evaporable getter alloys powder includes barium aluminium powder and nickel powder.
4. the composite getter according to claim 3 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described The ratio of barium aluminium powder and nickel powder in evaporable getter alloys powder is 1:1, the barium aluminium powder include 53.5% barium and 46.5% aluminium.
5. the composite getter according to claim 1 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described Non- nonevaporable getter agent includes non-nonevaporable getter agent band, non-nonevaporable getter agent support and non-nonevaporable getter agent back-up ring, the non-steaming The periphery that getter band is wrapped in the non-nonevaporable getter agent support is dissipated, the non-nonevaporable getter agent back-up ring is set in described The outer surface of the non-nonevaporable getter agent band and non-nonevaporable getter agent back-up ring is fixedly connected with the non-nonevaporable getter agent support.
6. the composite getter according to claim 5 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described Non- nonevaporable getter agent support includes cylindrical straight section, the flat side section in bottom and the cylindrical flange section being from top to bottom sequentially connected, described Cylindrical straight section, the flat side section in bottom and cylindrical flange section are structure as a whole, and the surface of the flat side section in bottom is provided with multiple circumference Hole, the non-nonevaporable getter agent band is wrapped in the upper surface of the flat side section in middle lower section and the bottom of the cylindrical straight section.
7. the composite getter according to claim 6 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described Non- nonevaporable getter agent band includes base band and non-nonevaporable getter agent alloy muffin, and the non-nonevaporable getter agent alloy muffin is compressed on The tow sides of the base band, the non-nonevaporable getter agent band is by being suppressed with the base band pitch of the laps of non-nonevaporable getter agent alloy muffin Form, the length of run of the base band is 1m~10m.
8. the composite getter according to claim 7 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described Non- nonevaporable getter agent alloy muffin includes zirconium, vanadium and iron.
9. the composite getter according to claim 8 for metal direct connection solar energy vacuum tube, it is characterised in that:It is described Non- nonevaporable getter agent alloy muffin crosses vacuum powder smelting process and ball powder-grinding method by 72% zirconium and 28% vanadium and Tie Tong Compacting is formed.
10. the composite getter according to claim 2 for metal direct connection solar energy vacuum tube, it is characterised in that:Institute It is 2 to state getter support, and the getter support is L-type stainless steel band, and one end of the L-type stainless steel band is with evapotranspiring Type getter is connected and the other end is connected with non-nonevaporable getter agent, and the evaporable air-absorbing agent, non-nonevaporable getter agent and metal are straight The cover glass tube of logical solar energy vacuum tube is arranged concentrically and the evaporable air-absorbing agent and non-nonevaporable getter agent pass through welding manner It is held within the straight-through metal tube inside cover glass tube, the outer ring of the ring and the vertical range of the cover glass tube are 0.5~15mm.
CN201710622066.8A 2017-07-27 2017-07-27 Composite getter for metal straight-through solar vacuum tube Active CN107255369B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108981208A (en) * 2018-08-17 2018-12-11 沧州天瑞星光热技术有限公司 A kind of solar vacuum heat-collecting pipe getter, fixed structure and installation method

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