CN202692499U - Metal expansion joint component applied to medium-high temperature solar vacuum collector tube - Google Patents
Metal expansion joint component applied to medium-high temperature solar vacuum collector tube Download PDFInfo
- Publication number
- CN202692499U CN202692499U CN 201220331162 CN201220331162U CN202692499U CN 202692499 U CN202692499 U CN 202692499U CN 201220331162 CN201220331162 CN 201220331162 CN 201220331162 U CN201220331162 U CN 201220331162U CN 202692499 U CN202692499 U CN 202692499U
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- Prior art keywords
- expansion joint
- metal expansion
- sealing flange
- high temperature
- solar vacuum
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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
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Abstract
The utility model discloses a metal expansion joint component applied to a medium-high temperature solar vacuum collector tube. The metal expansion joint component comprises a corrugated section, a supporting circular tube and a sealing flange, the supporting circular tube is sleeved in the corrugated section and hermetically welded with one end of the corrugated section, and the other end of the corrugated section is hermetically welded with the sealing flange. Three guide points are arranged on the sealing flange, so that a metal expansion joint is ensured to be effectively guided when working, the corrugated section does not rub with adjacent metal parts, and vacuum tightness and the service life of the metal expansion joint are effectively ensured. The metal expansion joint component is simple in structure, easy to manufacture, fine in tightness, reliable in performance and long in service life, can be used at the high temperature of 350 DEG C for a long time, and can bear the working pressure of 0.1-0.5MPa.
Description
Technical field
The utility model relates to a kind of type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe.
Background technology
Middle high temperature solar vacuum heat collection pipe, as the core product of trough type solar power generation, its thermal-arrest situation directly affects operating efficiency and the operating cost in whole power station.Because thermal-collecting tube is in the natural environment and works, need to bear for a long time the impact of wind and rain, the natural conditions such as cold and hot.And the type metal expansion joint assembly does not cause enough the watching attentively of people as the relative weak link of thermal-collecting tube.Affect the thermal-collecting tube key factor in service life as not adopting appropriate measure to its protection and reinforcement, will becoming.
Summary of the invention
The purpose of this utility model is in order to address the above problem, to propose a kind of type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe.The utlity model has high temperature resistant, high pressure, the characteristics of long service life.
A kind of type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe comprises bellows segment, supports pipe and sealing flange;
Support pipe and be inserted in the bellows segment, an end of bellows segment carries out seal welding with the support pipe, and the other end and sealing flange carry out seal welding, and sealing flange moves along supporting the pipe horizontal axis by the compression of bellows segment.
Described sealing flange is provided with guiding point, and guiding point is circular configuration, is fixed on the sealing flange.
The utility model has the advantage of:
Can be found out by the technical scheme that above-mentioned the utility model provides, the type metal expansion joint assembly of middle high temperature solar vacuum heat collection pipe described in the utility model, owing to comprising bellows segment, supporting pipe and sealing flange, supporting pipe is inserted in the bellows segment, carry out seal welding with bellows segment one end, sealing flange and the bellows segment other end carry out seal welding, and be simple in structure, vacuum leakproofness good, heat resisting and pressure resisting, long service life.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of sealing flange of the present utility model.
Among the figure:
1-bellows segment 2-supports pipe 3-sealing flange
4-guiding point 5-groove
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
The utility model is a kind of type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe, as shown in Figure 1, comprises bellows segment 1, supports pipe 2 and sealing flange 3.
Support pipe 2 and be inserted in the bellows segment 1, an end of bellows segment 1 carries out seal welding with support pipe 2, and the other end and sealing flange 3 carry out seal welding, and sealing flange 3 moves along supporting pipe 2 horizontal axis by the compression of bellows segment 1.
Described sealing flange 3 is provided with detent 5, and when type metal expansion joint assembly and other structure welding, the circular clamp identical with groove size carried out matched in clearance, is conducive to improve axiality, guarantees precise positioning, realizes the accurate welding of thermal-collecting tube.
There is certain interval between described support pipe 2 and the sealing flange 3, keeps the gap by guiding point 4, during the compression of type metal expansion joint assembly stand under load, support pipe 2 and can pass sealing flange 3 actions, offset axial load.
As shown in Figure 2; on the described sealing flange 3 with three guiding point 4(circular configurations; be welded on the sealing flange 3); sealing flange 3 can move along supporting pipe 2 horizontal axis under the guiding of guiding point 4; guiding point 4 ensures good guidance when making type metal expansion joint work; protection bellows segment 1 does not rub with the adjacent metal part; sealing flange 3 can bear the radial load that most of type metal expansion joint assembly bears by supporting pipe 2; reduce the radial load of bellows segment 1 as far as possible, effectively guaranteed vacuum leakproofness and the service life of type metal expansion joint.
The type metal expansion joint assembly cooperates during with other structure welding anchor clamps to use, and is beneficial to the raising axiality, guarantees precise positioning.
Wherein, bellows segment 1 can be born 350 ℃ high temperature for a long time, and can bear the thermal-arrest medium of 0.1～0.5MPa pressure, applied range.Preferably adopt the metal material manufacturing of corrosion-resistant, high thermal conductance and high life.
Under the thermal-collecting tube actual working state, operating temperature is generally between 300 ℃～350 ℃.Because metal material is different from the thermal coefficient of expansion of glass material, metal material expanded by heating amount is more much bigger than the expanded by heating amount of glass material.Need the compression of type metal expansion joint assembly to offset the different of metal inner pipe and glass enclosure tube thermal expansion amount this moment.Wherein, sealing flange 3 is tightly connected with glass enclosure tube, supports pipe 2 and metal inner pipe seal welding, forms the vacuum cavity between glass enclosure tube and metal inner pipe.
During the compression of type metal expansion joint assembly, have certain interval owing to supporting between pipe 2 and the sealing flange 3, sealing flange 3 can move along supporting pipe 2 horizontal axis under the guiding of guiding point 4.The suffered radial load of type metal expansion joint assembly substantially all is applied to sealing flange 3 and supports on the pipe 2 like this, and bellows segment 1 is born radial load hardly.Type metal expansion joint assembly does not in the past have anchor point 4 owing on the sealing flange 3, and inner support pipe 2 is less with the gap of bellows segment 1.When the type metal expansion joint assembly compressed, because the type metal expansion joint assembly is subject to the gravitational load of glass outer tube all the time, bellows segment 1 was easy to and supports pipe 2 contact frictions.Because all in 0.16～0.3mm scope, the bellows segment 1 of this thickness is long-term under loaded state to rub with supporting pipe 2 bellows segment 1 general thickness, very easily causes bellows segment 1 mill to leak.And in a single day mill leakage of bellows segment 1, the vacuum of thermal-collecting tube will be kept, thereby has affected the working life of thermal-collecting tube homogeneous tube.
The utility model discloses a kind of high temperature resistant, high pressure, the type metal expansion joint assembly of long service life, simple in structure, be easy to make good airproof performance.Can under 350 ℃ of high temperature, use for a long time, and can bear the operating pressure of 0.1～0.5MPa, dependable performance, long service life.
Claims (4)
1. a type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe is characterized in that, comprises bellows segment, supports pipe and sealing flange;
Support pipe and be inserted in the bellows segment, an end of bellows segment carries out seal welding with the support pipe, and the other end and sealing flange carry out seal welding, and sealing flange moves along supporting the pipe horizontal axis by the compression of bellows segment.
2. a kind of type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe according to claim 1 is characterized in that, described sealing flange is provided with detent.
3. a kind of type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe according to claim 1 is characterized in that, described sealing flange is provided with guiding point, and guiding point is circular configuration, is fixed on the sealing flange.
4. a kind of type metal expansion joint assembly that is applied to middle high temperature solar vacuum heat collection pipe according to claim 3 is characterized in that, described guiding point is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331162 CN202692499U (en) | 2012-07-09 | 2012-07-09 | Metal expansion joint component applied to medium-high temperature solar vacuum collector tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331162 CN202692499U (en) | 2012-07-09 | 2012-07-09 | Metal expansion joint component applied to medium-high temperature solar vacuum collector tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692499U true CN202692499U (en) | 2013-01-23 |
Family
ID=47548109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220331162 Expired - Lifetime CN202692499U (en) | 2012-07-09 | 2012-07-09 | Metal expansion joint component applied to medium-high temperature solar vacuum collector tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202692499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028615A (en) * | 2018-06-26 | 2018-12-18 | 华电电力科学研究院有限公司 | A kind of disc type solar energy collecting system and heat collecting method |
-
2012
- 2012-07-09 CN CN 201220331162 patent/CN202692499U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109028615A (en) * | 2018-06-26 | 2018-12-18 | 华电电力科学研究院有限公司 | A kind of disc type solar energy collecting system and heat collecting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |