CN101871864B - On-line detection method of anti-detonating quality of all-glass heat tube type evacuated solar collector tube and device - Google Patents
On-line detection method of anti-detonating quality of all-glass heat tube type evacuated solar collector tube and device Download PDFInfo
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- CN101871864B CN101871864B CN200910082610XA CN200910082610A CN101871864B CN 101871864 B CN101871864 B CN 101871864B CN 200910082610X A CN200910082610X A CN 200910082610XA CN 200910082610 A CN200910082610 A CN 200910082610A CN 101871864 B CN101871864 B CN 101871864B
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses an on-line detection method of anti-detonating quality of all-glass heat tube type evacuated solar collector tube and a device. The on-line detection method is characterized in that a step of pressure detection is added after the step of ring seal of the collector tube, i.e. high-pressure gas or high-pressure liquid is introduced into the cavity of working medium from a condenser feeding port, and the pressure value situation of an inner tube is detected so as to judge whether the anti-detonating quality of the all-glass heat tube type evacuated solar collector tube is qualified. The on-line detection device comprises a pressurizing pipeline, a pressurizing device, a pressure sensing device and a controller, wherein the pressurizing device provides high-pressure gas or high-pressure liquid, the pressure sensing device detects the pressure value situation of the inner tube, and the controller judges whether the anti-detonating quality of the all-glass heat tube type evacuated solar collector tube is qualified according to the pressure value situation detected by the pressure sensing device. The invention detects the anti-detonating quality of the heat tube type evacuated collector tube glass so as to avoid detonation phenomenon as much as possible.
Description
Technical field
The present invention relates to the online characterization processes of a kind of anti-detonating quality of all-glass heat tube type evacuated solar collector tube, belong to the solar energy utilization technique field.
Background technology
The double-layer coaxial complete glass vacuum sun thermal-collecting tube is as the key components of solar water heating system, and is ripe on production technology, and obtained large-area popularization.Be the basis with the double-layer coaxial complete glass vacuum sun thermal-collecting tube; In the patent No. is in the one Chinese patent application such as 98246355.3,200420050936.7,200510007327.2, has proposed all-glass heat tube type evacuated solar collector tube (hereinafter to be referred as the heat pipe-type thermal-collecting tube).The heat pipe-type thermal-collecting tube is equipped with a spot of liquid working substance owing to adopt the phase-change heat-exchange principle in the thermal-collecting tube, and under normal temperature condition; Working medium generally is in vacuum state; Therefore, compare with common double-layer coaxial complete glass vacuum sun thermal-collecting tube, it is fast to have toggle speed; Preventing freeze in winter, advantage such as anhydrous in the pipe.
Along with the development of heat pipe-type thermal-collecting tube production technology, beginning on the market to occur with the heat pipe-type thermal-collecting tube is the solar water heating system of heat collecting element.But, for the heat pipe-type thermal-collecting tube, because it has exactly adopted all-glass construction; And pipe is closed cavity in the thermal-collecting tube; The pipe internal memory contains small amount of liquid working medium, because possibly there is the proper mass defective in glass inner tube itself, like calculus, plethora etc.; Or the scuffing that produces of work in-process, stress etc., produced hidden danger when on hot-water heating system, using later on.This mainly is because for common double-layer coaxial complete glass vacuum sun thermal-collecting tube, the sky in its cavity shines temperature and can reach more than 250 ℃; When hot-water heating system under specified conditions such as installation initial stage; The heat pipe-type thermal-collecting tube possibly be under the empty solarization state of strong irradiation, and its interior temperature of glass chamber that working medium is housed also possibly reach more than 200 ℃, all or part of vaporization of working medium possibility in the thermal-collecting tube; Become gas; Manage internal pressure this moment can increase along with the increase of temperature, may cause the interior pipe of glass heat pipe glass can not bear pressure and blast suddenly, causes the hot-water heating system of using to damage; Influence is normal to be used, even the problem of damage product or injury occurs.
For finished product heat pipe-type thermal-collecting tube, generally be difficult in the problem set heat pipe that all detects glass defect before dispatching from the factory, and unreasonable if thermal-arrest intraductal working medium type and total amount are selected for use, the probability that the heat pipe-type thermal-collecting tube breaks down is increased considerably.At present, still less than GB about all-glass heat tube type evacuated solar collector tube.Therefore; For improving Product Safety and the reliability after the heat pipe-type thermal-collecting tube dispatches from the factory; Should in heat pipe-type thermal-collecting tube production run, increase online characterization processes, the problem set heat pipe that has defective is detected in process of production, the qualified products of guaranteeing to dispatch from the factory, reliable.
All-glass heat tube type evacuated solar collector tube production procedure at present; As shown in Figure 1; Comprise: draw envelope-cleaning-Nei pipe plated film-outer tube and interior pipe ring envelope-exhaust-bake to disappear-check-operation such as case, yet above-mentioned technological process not opposite heat tube formula collector tube glass anti-knock properties is tested; Just might cause defective problem heat pipe-type thermal-collecting tube to become certified products, thereby cause a hidden trouble.
Summary of the invention
The object of the invention then is the shortcoming that overcomes above-mentioned technological process; A kind of anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method and device are provided; Realize the online detection of the glass heat pipe capability of antidetonance; Defective problem set heat pipe is detected to greatest extent, make the heat pipe-type thermal-collecting tube safety of dispatching from the factory, reliable.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts comprises:
A kind of anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method; Behind the outer tube and the completion of the ring seal work step between the interior pipe of described all-glass heat tube type evacuated solar collector tube; Pipe is inner in described forms the working medium cavity, and guarantees in described and leave a condensation segment liquid injection port; It is characterized in that:
After described ring seal work step; Also comprise a pressure detection work step; Described pressure detection work step is meant: in described working medium cavity, pass to gases at high pressure or highly pressurised liquid through described condensation segment liquid injection port; Detect described interior pipe pressure inside value situation then, whether qualified with the capability of antidetonance of judging all-glass heat tube type evacuated solar collector tube.
In preferable technical scheme: the production procedure of described all-glass heat tube type evacuated solar collector tube is in regular turn: draw envelope work step, cleaning work step, interior pipe plated film work step, ring seal work step, described pressure detection work step, exhaust work step, perfusion work step, the roasting work step that disappears, check work step and vanning work step.
In preferable technical scheme: the production procedure of described all-glass heat tube type evacuated solar collector tube is in regular turn: draw envelope work step, cleaning work step, interior pipe plated film work step, ring seal work step, exhaust work step, described pressure detection work step, perfusion work step, the roasting work step that disappears, check work step and vanning work step.
In preferable technical scheme:
The described envelope of drawing: be that pipe and outer tube in the thermal-collecting tube are processed into length and the shape that needs;
Described cleaning: be that pipe in the thermal-collecting tube and outer tube and condensation segment are cleaned;
Pipe plated film in described: be to prepare coating for selective absorption at the thermal-collecting tube inner tube outer surface;
Described ring seal: be with in the thermal-collecting tube pipe and the outer tube sealing by fusing be the all-glass heat tube type evacuated solar collector tube structure; The inner working medium cavity that forms of pipe in described; And guarantee in described and leave a condensation segment liquid injection port that the interlayer between described interior pipe and the outer tube then remains with a getter minute surface end exhausr port;
Described exhaust: be to be communicated with negative pressure through described getter minute surface end exhausr port; And under hot conditions; Interlayer between the inner and outer pipes is pumped into high vacuum state, then the sealed-off of getter minute surface end exhausr port is got off, keep vacuum interlayer to be in the vacuum sealing state;
Described perfusion: be in thermal-collecting tube, to inject an amount of working medium through liquid injection port, and sealed-off liquid injection port tail mouth, keep the working medium cavity to be in the vacuum sealing state;
Described roasting disappearing: be that the evaporable air-absorbing agent in the vacuum interlayer is evapotranspired, activates; Form the getter minute surface on thermal-collecting tube blunt end glass tube surface, be used to keep the vacuum tightness of vacuum interlayer;
Described check: be inspection set heat pipe quality;
Described vanning: be with thermal-collecting tube packing encapsulation then, form certified products.
In preferable technical scheme: described pressure detection work step is: suppress pipeline connection with one and in described, manage; Then through one with suppress the pressure device that pipeline is connected and in described, manage inner input gases at high pressure or highly pressurised liquid; Use simultaneously one be communicated in the pressure-sensing device of suppressing pipeline detect described in pipe pressure inside value; After pipe pressure inside value reaches setting value in described; Pressure device stops to suppress, and described interior pipe inside temporarily keep-ups pressure stable;
Pipe pressure inside value a period of time in pressure-sensing device continues to detect; If the detected force value of this section period internal pressure sensing apparatus descends suddenly; Show that then the thermal-collecting tube capability of antidetonance is defective; If the detected force value of this section period internal pressure sensing apparatus does not have significant change, explain that the thermal-collecting tube capability of antidetonance is qualified.
In preferable technical scheme: a controller is electrically connected with described pressure-sensing device; Described controller judges according to the detected force value situation of described a period of time internal pressure sensing apparatus whether the capability of antidetonance of all-glass heat tube type evacuated solar collector tube is qualified.
In preferable technical scheme: in pipe inner input gases at high pressure or highly pressurised liquid process in described; After pipe pressure inside value reaches described setting value in described; Described pressure transducer transmits signals to described controller, and controller transmission signals is again given described pressure device and made it stop to suppress.
In preferable technical scheme: after the knock rating of a thermal-collecting tube detects and accomplishes; Described controller sends signal and gives one to suppress the bleed valve that pipeline is connected with described; The order bleed valve is opened, and makes that gases at high pressure or the highly pressurised liquid in the above-mentioned thermal-collecting tube flows out; Remove described being connected between pipeline and the described thermal-collecting tube of suppressing then, to carry out the thermal-collecting tube check of next batch.
In preferable technical scheme: the described pipeline of suppressing is tightly connected through removable seal device and described thermal-collecting tube.
In preferable technical scheme: described removable seal device be connected described in pipe tail mouth place, described in the condensation end of pipe perhaps on the outer wall of described outer tube.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts also comprises:
A kind of anti-detonating quality of all-glass heat tube type evacuated solar collector tube on-line measuring device is characterized in that, comprises at least:
Suppress pipeline for one, it is connected with the working medium cavity of thermal-collecting tube through a condensation segment liquid injection port;
A pressure device is connected with the described pipeline of suppressing, and to the described pipeline of suppressing gases at high pressure or highly pressurised liquid is provided;
A pressure-sensing device is connected with the described pipeline of suppressing, and is used for detecting described interior pipe pressure inside value situation; And,
A controller is electrically connected with described pressure-sensing device, according to the detected force value situation of described pressure-sensing device, judges whether the capability of antidetonance of all-glass heat tube type evacuated solar collector tube is qualified.
In preferable technical scheme: comprise that also one is suppressed the bleed valve that pipeline is connected with described, described bleed valve is electrically connected with described controller.
In preferable technical scheme: described suppress pipeline through the removable seal device be sealedly connected on described in pipe tail mouth place, described in the condensation end of pipe perhaps on the outer wall of described outer tube.
In preferable technical scheme: described pressure device is electrically connected with described controller.
In preferable technical scheme: described pressure device is pressuring pump or high pressure storage tank.
In preferable technical scheme: described pressure-sensing device is a pressure transducer.
Compared with prior art; The beneficial effect that the present invention has is: can the online detection heat pipe-type thermal-collecting tube capability of antidetonance; Detect the problem set heat pipe that has defective; Make the heat pipe-type thermal-collecting tube that dispatches from the factory can not make the heat pipe-type thermal-collecting tube safer, reliable because of non-normal working causes blasting phenomena occurring under the empty condition of shining.
Description of drawings
Fig. 1 is the conventional heat pipe-type thermal-collecting tube technological process of production;
Fig. 2 be can online detection anti-knock properties the heat pipe-type thermal-collecting tube technological process of production (1);
Fig. 3 be can online detection anti-knock properties the heat pipe-type thermal-collecting tube technological process of production (2);
Fig. 4 a, Fig. 4 b are respectively a kind of working medium cavity resistance test method synoptic diagram.
Embodiment
As shown in Figure 2; Be that pressure boost detects operation between ring seal operation and the deairing step in conventional heat pipe-type thermal-collecting tube production technology; Through in the working medium cavity, charging into highly pressurised liquid or gas; Keep certain hour, make the thermal-collecting tube that does not meet the pressure requirement under the high pressure effect, scrap, keep the qualified thermal-collecting tube semi-manufacture that satisfy the pressure requirement.
Specifically, please combine to consult shown in Figure 2, the heat pipe-type thermal-collecting tube technological process of production provided by the invention comprises following work step:
Draw envelope: be that pipe, outer tube in the thermal-collecting tube are processed into length, the shape that needs.
Clean: be that pipe, outer tube and condensation segment in the thermal-collecting tube are cleaned.
Interior pipe plated film: be to prepare coating for selective absorption at the thermal-collecting tube inner tube outer surface.
Ring seal: be with in the thermal-collecting tube pipe 1 with outer tube 2 (referring to Fig. 4 a, Fig. 4 b) sealing by fusing be the all-glass heat tube type evacuated solar collector tube structure; The pipe 1 inner working medium cavity that forms in described; And pipe 1 remains with a condensation segment liquid injection port in described, and the interlayer between described interior pipe 1 and the outer tube 2 then remains with a getter minute surface end exhausr port 21.
Pressure detection: in described working medium cavity, pass to gases at high pressure or highly pressurised liquid, detect described interior pipe pressure inside value situation then, whether qualified with the capability of antidetonance of judging all-glass heat tube type evacuated solar collector tube.For example: shown in Fig. 4 a; Adopt removable seal device 3 to suppress tail mouth 11 places that pipeline 4 is sealedly connected on described interior pipe with one; Then through one with suppress the pressuring pump 6 that pipeline 4 is connected and in described, manage 1 inner input gases at high pressure or highly pressurised liquid; Use simultaneously one be communicated in the pressure transducer 5 of suppressing pipeline 4 detect in the pipe 1 pressure inside value, after force value reaches setting value, transmit signals to controller 7 through described pressure transducer 5; Controller 7 transmission signals are given described pressuring pump 6 and are made it stop to suppress, and described interior pipe 1 inside temporarily keep-ups pressure stable.Then; 1 pressure inside value a period of time of pipe in pressure transducer 5 continues to detect; If this section period pressure sensor 5 detected force value descend suddenly; Show that then the thermal-collecting tube capability of antidetonance is defective,, explain that the thermal-collecting tube capability of antidetonance is qualified if the detected force value of this section period internal pressure sensing apparatus does not have significant change.After this, described controller 7 sends signals and gives one to suppress the bleed valve 8 that pipeline is connected with described, and bleed valve 8 is opened, and makes gases at high pressure or highly pressurised liquid outflow in the above-mentioned thermal-collecting tube.Dismantle described removable seal device 3 at last, carry out the thermal-collecting tube check of next batch.
Exhaust: be to be communicated with negative pressure, thereby under hot conditions, the interlayer between the inner and outer pipes be pumped into high vacuum state, and exhausr port 21 sealed-off are got off, keep vacuum interlayer to be in the vacuum sealing state through described getter minute surface end exhausr port 21.
Perfusion: be in thermal-collecting tube, to inject an amount of working medium through liquid injection port, and sealed-off liquid injection port tail mouth 11, keep the working medium cavity to be in the vacuum sealing state.
Roasting disappearing: be that the evaporable air-absorbing agent in the vacuum interlayer is evapotranspired, activates.Form the getter minute surface on thermal-collecting tube blunt end glass tube surface, be used to keep the vacuum tightness of vacuum interlayer.
Check: be inspection set heat pipe quality.
Vanning: be with thermal-collecting tube packing encapsulation then, form certified products.
Certainly, also can pressure detection work step and exhaust work step be exchanged, like this, the new heat pipe-type thermal-collecting tube technological process of production is as shown in Figure 3, because the content and a last embodiment of each work step are just the same, has repeated no longer one by one at this.Even so one, the underproof product of the capability of antidetonance also can pass through pump-down process, will cause production cost to increase, and but, carries out the exhaust work step earlier, and the capability of antidetonance is detected more near the actual working state of thermal-collecting tube, also has its advantage to exist.
Please participate in shown in Fig. 4 b; It is the synoptic diagram that carries out another embodiment of the pressure-detecting device that the pressure detection work step adopted; Described pressure-detecting device comprise one through removable seal device 3 with described in pipe 1 be connected suppress pipeline 4; The described pipeline 4 of suppressing is communicated with a pressure transducer 5, a pressuring pump 6 and a bleed valve 8 respectively, and described pressure transducer 5, pressuring pump 6 and bleed valve 8 all are electrically connected with a controller 7.The embodiment difference represented with Fig. 4 a is: the sealing station of described removable seal device 3 is at the condensation end of interior pipe 1.Certainly, according to such prompting, the sealing station of described removable seal device 3 can also be positioned on the outer wall of outer tube 2.But, where the present invention is not limited to be sealed in, as long as can be with suppressing pipeline 4 and interior 1 airtight the connection to realize inwardly managing the purpose of 1 supercharging of pipe.
Fig. 4 a, Fig. 4 b also only are two embodiment of anti-detonating quality of all-glass heat tube type evacuated solar collector tube on-line measuring device; In fact; Pressuring pump can substitute with high pressure storage tank, and pressure transducer also can be replaced with standard machinery formula barometer, therefore; The structure of described on-line measuring device should be summarized as follows, and it comprises at least:
Suppress pipeline for one, it is connected with the working medium cavity of thermal-collecting tube through described condensation segment liquid injection port;
A pressure device is connected with the described pipeline of suppressing, and to the described pipeline of suppressing gases at high pressure or highly pressurised liquid is provided;
A pressure-sensing device is connected with the described pipeline of suppressing, and is used for detecting described interior pipe pressure inside value situation; And,
A controller is electrically connected with described pressure-sensing device, according to the detected force value situation of described pressure-sensing device, judges whether the capability of antidetonance of all-glass heat tube type evacuated solar collector tube is qualified.
More than explanation is just illustrative for the purpose of the present invention; And nonrestrictive, those of ordinary skills understand, under the situation of spirit that does not break away from claim and limited and scope; Can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.
Claims (6)
1. anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method; Behind the outer tube and the completion of the ring seal work step between the interior pipe of described all-glass heat tube type evacuated solar collector tube; Pipe is inner in described forms the working medium cavity, and guarantees in described and leave a condensation segment liquid injection port; It is characterized in that: after described ring seal work step; Also comprise a pressure detection work step; Described pressure detection work step is meant: adopt the removable seal device to suppress the condensation segment liquid injection port tail mouth place that line seal is connected said interior pipe with one; Then through one with suppress the pressure device that pipeline is connected and in described, manage inner input gases at high pressure or highly pressurised liquid; Use simultaneously one be communicated in the pressure-sensing device of suppressing pipeline detect in pipe pressure inside value, described pressure-sensing device is electrically connected with a controller; After force value reaches setting value, transmit signals to said controller through described pressure-sensing device, said controller transmission signals is given described pressure device and is made it stop to suppress, and described interior pipe inside temporarily keep-ups pressure stable;
Pipe pressure inside value a period of time in pressure-sensing device continues to detect, described controller descends suddenly according to the detected force value of said a period of time internal pressure sensing apparatus or does not have significant change and judge the thermal-collecting tube capability of antidetonance.
2. anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method according to claim 1 is characterized in that: the production procedure of described all-glass heat tube type evacuated solar collector tube is in regular turn: draw envelope work step, cleaning work step, interior pipe plated film work step, ring seal work step, described pressure detection work step, exhaust work step, perfusion work step, the roasting work step that disappears, check work step and vanning work step.
3. anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method according to claim 1 is characterized in that: the production procedure of described all-glass heat tube type evacuated solar collector tube is in regular turn: draw envelope work step, cleaning work step, interior pipe plated film work step, ring seal work step, exhaust work step, described pressure detection work step, perfusion work step, the roasting work step that disappears, check work step and vanning work step.
4. according to claim 2 or 3 described anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method, it is characterized in that:
The described envelope of drawing: be that pipe and outer tube in the thermal-collecting tube are processed into length and the shape that needs;
Described cleaning: be that pipe in the thermal-collecting tube and outer tube and condensation segment are cleaned;
Pipe plated film in described: be to prepare coating for selective absorption at the thermal-collecting tube inner tube outer surface;
Described ring seal: be with in the thermal-collecting tube pipe and the outer tube sealing by fusing be the all-glass heat tube type evacuated solar collector tube structure; The inner working medium cavity that forms of pipe in described; And guarantee in described and leave a condensation segment liquid injection port that the interlayer between described interior pipe and the outer tube then remains with a getter minute surface end exhausr port;
Described exhaust: be to be communicated with negative pressure through described getter minute surface end exhausr port; And under hot conditions; Interlayer between the inner and outer pipes is pumped into high vacuum state, then the sealed-off of getter minute surface end exhausr port is got off, keep vacuum interlayer to be in the vacuum sealing state;
Described perfusion: be in thermal-collecting tube, to inject an amount of working medium through liquid injection port, and sealed-off liquid injection port tail mouth, keep the working medium cavity to be in the vacuum sealing state;
Described roasting disappearing: be that the evaporable air-absorbing agent in the vacuum interlayer is evapotranspired, activates; Form the getter minute surface on thermal-collecting tube blunt end glass tube surface, be used to keep the vacuum tightness of vacuum interlayer;
Described check: be inspection set heat pipe quality;
Described vanning: be with thermal-collecting tube packing encapsulation then, form certified products.
5. anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method according to claim 1; It is characterized in that: after the knock rating of a thermal-collecting tube detects and accomplishes; Described controller sends signal and gives one to suppress the bleed valve that pipeline is connected with described; The order bleed valve is opened, and makes that gases at high pressure or the highly pressurised liquid in the above-mentioned thermal-collecting tube flows out; Remove described being connected between pipeline and the described thermal-collecting tube of suppressing then, to carry out the thermal-collecting tube check of next batch.
6. anti-detonating quality of all-glass heat tube type evacuated solar collector tube online test method according to claim 1 is characterized in that: described removable seal device can also be sealedly connected on the outer wall of described interior condensation end of managing or described outer tube.
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| CN200910082610XA CN101871864B (en) | 2009-04-21 | 2009-04-21 | On-line detection method of anti-detonating quality of all-glass heat tube type evacuated solar collector tube and device |
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| CN200910082610XA CN101871864B (en) | 2009-04-21 | 2009-04-21 | On-line detection method of anti-detonating quality of all-glass heat tube type evacuated solar collector tube and device |
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| CN102042936B (en) * | 2010-11-03 | 2012-05-23 | 曹树梁 | Pressure-bearing inspection method and pressure-bearing inspection device of ceramic solar panel |
| CN102109406B (en) * | 2011-01-06 | 2012-02-08 | 山东力诺新材料有限公司 | Vibration test method for heat-collecting tube |
| CN102980314A (en) * | 2012-11-21 | 2013-03-20 | 皇明太阳能股份有限公司 | Reducing condensation all-glass heat tube type vacuum solar heat-collecting tube |
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| CN101871864A (en) | 2010-10-27 |
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