CN211823187U - Straight-through solar vacuum tube - Google Patents
Straight-through solar vacuum tube Download PDFInfo
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- CN211823187U CN211823187U CN202020063645.0U CN202020063645U CN211823187U CN 211823187 U CN211823187 U CN 211823187U CN 202020063645 U CN202020063645 U CN 202020063645U CN 211823187 U CN211823187 U CN 211823187U
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- glass cover
- cover tube
- tube
- medium flow
- flow channel
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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
Abstract
The utility model belongs to the technical field of solar energy collection pipe equipment, specifically disclose a through solar vacuum tube: the vacuum tube comprises: a glass cover tube; the medium flow channel penetrates through the glass cover tube; the heat absorption film is fixedly arranged on the medium flow channel, absorbs solar radiation, converts the solar radiation into heat energy and transmits the heat energy to the medium flow channel; a fastener installed between the glass cover tube and the medium flow passage to maintain the medium flow passage and the glass cover tube in tight connection; a seal for sealingly connecting the glass cover tube and the fastener; and the getter is fixedly arranged on the heat absorption film. The vacuum tube does not exist to the restriction of mounted position and ann angle and possess good bearing capacity.
Description
Technical Field
The utility model relates to a solar energy collection pipe equipment technical field, concretely relates to through solar vacuum tube.
Background
The vacuum tube is the core of the solar water heater, the structure of the conventional vacuum tube is like an elongated thermos flask liner, vacuum is formed between the inner layer and the outer layer, the surface of the inner glass tube is coated with a spectrum selective absorption coating by utilizing a special process for absorbing solar radiation energy to the maximum extent, photons impact the coating after sunlight irradiation, the solar energy is converted into heat energy, water absorbs heat from the outside of the coating, the water temperature is increased, the density is reduced, hot water moves upwards, and cold water with high specific gravity is reduced.
The conventional vacuum tube is generally provided with a single end opening, the opening end is upward in practical use in order to enable heat transfer media in the tube to smoothly perform heat convection circulation, and the vacuum tube in the form has the problems of unsmooth heat circulation of the heat transfer media in the tube, difficulty in emptying, difficulty in cleaning after scaling and the like.
For example, the chinese patent application No. CN201910770206.5 discloses a solar vacuum heat collecting tube based on a coiled flat pulsating heat pipe, which is characterized by comprising a vacuum glass tube (1) and a coiled flat pulsating heat pipe (2); the vacuum glass tube (1) comprises an inner glass tube (4) and an outer glass tube (3), the inner glass tube (4) is arranged in the outer glass tube (3), and a vacuum interlayer (5) is formed between the inner glass tube (4) and the outer glass tube (3); the coiled flat pulsating heat pipe (2) is a hollow cylinder which is coiled by mutually connecting and matching the boundaries of two sides of the flat pulsating heat pipe; an evaporation section (13) of the coiled flat pulsating heat pipe (2) extends into the inner glass pipe (4), and a condensation section (15) extends into the heat exchange water tank; the surface of the evaporation section (13) is plated with a solar selective absorption layer, and water is filled between the inner glass tube (4) and the evaporation section (13) of the coiled flat pulsating heat pipe (2) to form a heat preservation water layer (9).
The prior art discloses a solar vacuum heat collecting tube, which adopts an inner glass tube as a medium storage space, so that the assembly position and the assembly angle are limited, and the pipeline for storing the medium has poor ductility and is easy to break; and in the assembling process, the component is high in breakage rate.
Based on the technical problems in the prior art, the inventor provides a straight-through solar vacuum tube in combination with years of research and development experiences.
SUMMERY OF THE UTILITY MODEL
The utility model provides a through solar vacuum tube, the vacuum tube does not exist to the restriction of mounted position and ann angle and possesses good bearing capacity.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a straight-through solar vacuum tube comprising:
the glass cover tube forms a vacuum space to isolate air and prevent the internal heat from dissipating;
the medium flow channel penetrates through the glass cover tube and receives heat energy to heat the medium in the medium flow channel, and the medium flow channel is made of TP2 red copper;
the heat absorption film is fixedly arranged on the medium flow channel, absorbs solar radiation, converts the solar radiation into heat energy and transmits the heat energy to the medium flow channel;
a fastener installed between the glass cover tube and the medium flow passage to maintain the medium flow passage and the glass cover tube in a fastened connection;
a seal for sealingly connecting the glass cover tube and the fastener;
and the getter is fixedly arranged on the heat absorption film.
Further, the medium flow channel comprises a flow channel arc part positioned in the glass cover tube, and the flow channel arc part is in an omega shape.
Furthermore, the glass cover tube comprises a first glass cover tube and a second glass cover tube hermetically connected with the first glass cover tube, and openings for the medium flow passage to pass through are formed in the first glass cover tube and the second glass cover tube.
Further, the fastening piece comprises a sealing fixed joint and a fastening nut matched with the sealing fixed joint, the sealing fixed joint is of a hollow screw rod structure, the medium flow channel penetrates through the hollow part of the sealing fixed joint, a bolt body of the sealing fixed joint penetrates through an opening of the glass cover tube, a screw cap of the sealing fixed joint is arranged inside the glass cover tube, and the fastening nut is arranged outside the glass cover tube.
Furthermore, a suction port for vacuumizing the glass cover tube is further formed in the first glass cover tube and/or the second glass cover tube.
Further, the sealing element comprises a first sealing element and a second sealing element which are sleeved on the sealing fixed joint, the first sealing element is abutted between a screw cap of the sealing fixed joint and the inner wall of the glass cover tube, and the second sealing element is abutted between a fastening nut and the outer wall of the glass cover tube.
Furthermore, a metal gasket is arranged between the fastening nut and the second sealing element, and the metal gasket is sleeved on the sealing and fixing joint.
Compared with the prior art, the utility model discloses a superior effect lies in:
1. the straight-through solar vacuum tube of the utility model adopts the glass cover tube and the medium flow channel made of copper material, so that the medium flow channel has good stability in the actual application process, is not easy to break, and the accessory loss in the assembly production process is obviously reduced;
2. the straight-through solar vacuum tube of the utility model enables the glass cover tube and the medium flow channel to be in sealing fit and fixed with each other through the matching arrangement of the sealing element and the fastening element, thereby obviously improving the matching firmness and the sealing property between the glass cover tube and the medium flow channel;
3. through type solar vacuum tube, through the evacuation, general the medium runner with the fastener seals and will the fastener with medium runner welded step, the effectual reduction thermal loss in the glass cover pipe.
Drawings
FIG. 1 is a schematic structural diagram of a straight-through solar vacuum tube in an embodiment of the present invention;
FIG. 2 is a schematic structural view of a fastener and a seal in an embodiment of the invention;
FIG. 3 is a schematic structural view of a glass cover tube according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of the sealing and fixing joint in the embodiment of the present invention.
The drawings illustrate the following:
1-glass cover tube, 11-first glass cover tube, 12-second glass cover tube, 101-open end, 102-gathering end, 103-suction port, 2-medium flow channel, 3-fastening piece, 31-sealing fixed joint, 311-bolt body, 312-nut, 32-fastening nut, 33-metal gasket, 4-sealing piece, 41-first sealing piece, 42-second sealing piece, 5-heat absorption film and 6-getter.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the following detailed description of the present invention is made in conjunction with the accompanying drawings and the detailed description, it is to be noted that the features of the embodiments and examples of the present invention may be combined with each other without conflict.
Example 1
As shown in fig. 1, a straight-through solar vacuum tube comprises:
the glass cover tube 1 forms a vacuum space to isolate air and prevent internal heat from dissipating, and protects the internal structure of the glass cover tube 1 from being damaged by external force;
the medium flow channel 2 penetrates through the glass cover tube 1 and receives heat energy to heat a medium in the medium flow channel 2, and the medium flow channel 2 is made of TP2 red copper;
the heat absorption film 5 is fixedly arranged on the medium flow channel 2, absorbs solar radiation, converts the solar radiation into heat energy and transmits the heat energy to the medium flow channel 2;
a fastening member 3 installed between the glass cover tube 1 and the medium flow passage 2 to maintain the medium flow passage 2 and the glass cover tube 1 to be fastened;
a sealing member 4 for sealing the glass cover tube 1 and the fastening member 3;
and the getter 6 is fixedly arranged on the heat absorption film 5.
In this embodiment, the substrate of the heat absorbing film 5 is a copper plate or an aluminum plate, and a blue film is coated on the surface of the copper plate or the aluminum plate by magnetron sputtering or a black film is coated on the surface of the copper plate or the aluminum plate by roll coating, spray coating and other processes; the heat absorption film 5 is attached to the outer surface of the medium flow channel 2 and is welded together through processes of laser welding, ultrasonic welding and the like.
In the embodiment, the getter 6 adopts an evapotranspiration process, and the getter has an air suction effect only after an air suction material is deposited into a film in the evapotranspiration process; the getter 6 has the function of: the vacuum degree of the glass cover tube 1 is improved in a short time, and residual and re-released gas is eliminated after exhaust of the straight-through solar vacuum tube is sealed off, so that the exhaust time is shortened; a certain vacuum degree is maintained during the storage and the working of the straight-through solar vacuum tube.
The medium flow channel 2 comprises a flow channel arc part located in the glass cover tube 1, the flow channel arc part is in an omega shape, in this embodiment, the flow channel arc part is used as a buffer area of the medium flow channel 2, so that the medium flow channel 2 does not affect the functionality of the medium flow channel 2 when being stretched or stretched. Compared with a flow channel made of glass, the medium flow channel 2 made of TP2 red copper has good ductility, and when the medium pressure in the medium flow channel 2 is adjusted due to the external pressure, the pressure change of the medium cannot cause damage to the medium flow channel 2.
And a cavity between the glass cover tube 1 and the medium flow channel 2 is a vacuum cavity.
As shown in fig. 2 and 4, the fastening member 3 includes a sealing fixing joint 31 and a fastening nut 32 engaged with the sealing fixing joint 31, the sealing fixing joint 31 is a hollow screw structure, the medium flow passage 2 passes through a hollow portion of the sealing fixing joint 31, the medium flow passage 2 is sealingly connected with the sealing fixing joint 31, a bolt body 311 of the sealing fixing joint 31 passes through an opening of the glass cover tube 1, a nut 312 of the sealing fixing joint 31 is disposed inside the glass cover tube 1, the fastening nut 32 is disposed outside the glass cover tube 1, and a thread engaged with the fastening nut 32 is lathed on the bolt body 311.
The sealing element 4 comprises a first sealing element 41 and a second sealing element 42 which are sleeved on the sealing fixed joint 31, the first sealing element 41 is abutted between the nut 312 of the sealing fixed joint 31 and the inner wall of the glass cover tube 1, and the second sealing element 42 is abutted between the fastening nut 32 and the outer wall of the glass cover tube 1.
A metal gasket 33 is further arranged between the fastening nut 32 and the second sealing element 42, and the metal gasket 33 is sleeved on the sealing fixed joint 31.
In the practical application, there is a case that air enters the vacuum tube, in this embodiment, since the matching position of the sealing and fixing joint 31 and the opening of the glass cover tube 1 is a position where air is easy to enter, in this embodiment, the sealing is performed by the first sealing member 41 and the second sealing member 42, and the first sealing member 41 and the second sealing member 42 are clamped by rotating the fastening nut 32 to perform the sealing function.
In this embodiment, the first seal 41 and the second seal 42 are both fluoro-rubber seals.
As shown in fig. 3, the glass cover tube 1 includes a first glass cover tube 11 and a second glass cover tube 12 hermetically connected to the first glass cover tube 11, and openings for the medium flow channel 2 to pass through are provided on the first glass cover tube 11 and the second glass cover tube 12, in this embodiment, the first glass cover tube 11 and the second glass cover tube 12 include an open end 101 and a converging end 102, the open ends 101 of the first glass cover tube 11 and the second glass cover tube 12 are hermetically connected by bonding, and the converging end 102 of the first glass cover tube 11 and the second glass cover tube 12 is provided with an opening hermetically matched with the medium flow channel 2.
The first glass cover tube 11 and/or the second glass cover tube 12 are further provided with a suction port 103 for vacuumizing the glass cover tube 1.
The manufacturing method of the straight-through solar vacuum tube comprises the following steps:
step 1: manufacturing a glass cover tube 1, wherein an opening of a medium flow channel 2 and a suction port 103 for vacuumizing the glass cover tube 1 are formed in the glass cover tube 1;
step 2: manufacturing a medium flow channel 2, namely blanking a TP2 copper tube, bending an area positioned inside the glass cover tube 1 into an omega shape, welding a heat absorption film 5 on the medium flow channel 2 in a laser welding or ultrasonic welding mode, and welding a getter 6 on the heat absorption film 5 in a spot welding mode;
and step 3: assembling the medium flow passage 2 and the glass cover tube 1:
step 3.1: one end of the medium flow channel 2 penetrates into a first glass cover tube 11, and the other end of the medium flow channel 2 penetrates into a second glass cover tube 12;
step 3.2: the medium flow channel 2 and the first glass cover tube 11 and the second glass cover tube 12 are fastened through a fastener 3 and sealed through a sealing piece 4;
step 3.3: fixing the first glass cover tube 11 and the second glass cover tube 12 in a fusion sealing mode to form the glass cover tube 1;
and 4, step 4: vacuumizing, sucking the air in the glass cover tube 1 through a suction port 103 until the vacuum degree in the glass cover tube 1 reaches-1 level, and sealing the suction port 103.
In step 3.2, the method further comprises the step of sealing the medium flow channel 2 and the fastening piece 3 through high-temperature epoxy AB glue.
In step 3.2 of this embodiment, there is also included the step of welding the fastening 3 and the media flow channel 2 together.
In step 4 of this embodiment, the following steps are included:
step 4.1: the glass cover tube is arranged in an exhaust table and fixed on the exhaust table;
step 4.2: pre-pumping and detecting leakage, opening a pre-pumping valve to pre-pump the glass cover tube through the pumping port, detecting whether the glass cover tube leaks air or not through a spark leakage detector in a vacuum state, wherein the leaked air is a defective product, and keeping the finished glass cover tube;
step 4.3: fine pumping, namely vacuumizing the finished glass cover tube to ensure that the vacuum degree of an exhaust platform is lower than 10 Pa;
step 4.4: heating, namely conveying the exhaust table into an oven, and starting an igniter to ignite and heat;
step 4.5: and sealing off, namely taking the exhaust table out of the oven, sealing off the suction port by using an air welding gun, and checking the vacuum degree of the glass cover tube, wherein the vacuum degree needs to reach the level of-1.
The present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only for illustrating the principle of the present invention, without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, and these changes and improvements all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims.
Claims (7)
1. A straight-through solar vacuum tube, comprising:
the glass cover tube forms a vacuum space to isolate air and prevent the internal heat from dissipating;
the medium flow channel penetrates through the glass cover tube and receives heat energy to heat the medium in the medium flow channel, and the medium flow channel is made of TP2 red copper;
the heat absorption film is fixedly arranged on the medium flow channel, absorbs solar radiation, converts the solar radiation into heat energy and transmits the heat energy to the medium flow channel;
a fastener installed between the glass cover tube and the medium flow passage to maintain the medium flow passage and the glass cover tube in a fastened connection;
a seal for sealingly connecting the glass cover tube and the fastener;
and the getter is fixedly arranged on the heat absorption film.
2. A pass-through solar vacuum tube as claimed in claim 1, wherein the medium flow channel comprises a flow channel arc in the glass cover tube, the flow channel arc being Ω -shaped.
3. A straight-through solar vacuum tube as claimed in claim 1, wherein the glass cover tube comprises a first glass cover tube and a second glass cover tube hermetically connected with the first glass cover tube, and the first glass cover tube and the second glass cover tube are both provided with openings for the medium flow passage to pass through.
4. A pass-through solar vacuum tube as claimed in claim 1, wherein the fastening member comprises a sealing fixing joint and a fastening nut matched with the sealing fixing joint, the sealing fixing joint is of a hollow screw rod structure, the medium flow passage passes through the hollow part of the sealing fixing joint, the bolt body of the sealing fixing joint passes through the opening of the glass cover tube, the nut of the sealing fixing joint is arranged inside the glass cover tube, and the fastening nut is arranged outside the glass cover tube.
5. A straight-through solar vacuum tube as claimed in claim 3, wherein the first glass cover tube and/or the second glass cover tube is further provided with a suction port for vacuumizing the glass cover tube.
6. A through solar vacuum tube according to claim 4, characterized in that the sealing element comprises a first sealing element and a second sealing element which are sleeved on the sealing fixed joint, the first sealing element is abutted between the screw cap of the sealing fixed joint and the inner wall of the glass cover tube, and the second sealing element is abutted between the fastening nut and the outer wall of the glass cover tube.
7. A through solar vacuum tube according to claim 6, characterized in that a metal gasket is further provided between the fastening nut and the second sealing element, and the metal gasket is sleeved on the sealing and fixing joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020063645.0U CN211823187U (en) | 2020-01-13 | 2020-01-13 | Straight-through solar vacuum tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020063645.0U CN211823187U (en) | 2020-01-13 | 2020-01-13 | Straight-through solar vacuum tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211823187U true CN211823187U (en) | 2020-10-30 |
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ID=73049355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020063645.0U Active CN211823187U (en) | 2020-01-13 | 2020-01-13 | Straight-through solar vacuum tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211823187U (en) |
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2020
- 2020-01-13 CN CN202020063645.0U patent/CN211823187U/en active Active
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