CN102478444A - Method for detecting vacuum degree of vacuum pipeline - Google Patents
Method for detecting vacuum degree of vacuum pipeline Download PDFInfo
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- CN102478444A CN102478444A CN2010105640538A CN201010564053A CN102478444A CN 102478444 A CN102478444 A CN 102478444A CN 2010105640538 A CN2010105640538 A CN 2010105640538A CN 201010564053 A CN201010564053 A CN 201010564053A CN 102478444 A CN102478444 A CN 102478444A
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Abstract
The invention provides a method for detecting a vacuum degree of a vacuum pipeline. The method comprises the following steps: a temperature sensor is fixedly provided on the vacuum pipeline; the temperature sensor detects a temperature parameter of a pipe wall of the vacuum pipeline; the temperature sensor transmits the temperature parameter to a data processing center; the data processing center determines whether the vacuum degree of the vacuum pipeline is qualified or not according to the temperature parameter, if so, no processing is carried out; if not, a vacuum-pumping apparatus is started to carry out vacuum pumping on the vacuum pipeline. A simple procedure and a simple apparatus are needed by the method of the invention, the method is suitable for a situation that a requirement of detection precision of the vacuum degree is not very high, and cost is saved.
Description
Technical field
The present invention belongs to detection range on broad sense, refer in particular to a kind of vacuum line vacuum detecting method at this.
Background technology
As a pressure (comprising negative pressure) container, pipeline; The purpose that vacuumizes is in order to check its sealing; Drain inner air simultaneously; The existence that prevents airborne moisture or air itself influences the equipment operate as normal, like the pipeline of refrigeration systems such as refrigerator, air-conditioning, arc-chutes of sulphur hexafloride circuit breaker or the like.As the equipment that need under vacuum state, work, if can be had a strong impact on the performance of equipment after its vacuum tightness destruction or vacuum tightness reduce, need regularly do the check of vacuum tightness to it; Like common vacuum switch, its arc extinguishing ability relies on its vacuum tightness to guarantee, if vacuum tightness descends or destroys; Can be that vacuum switch loses its effect; Cause accident, it is carried out regular vacuum tightness check can find potential defectives such as its chronic leakage early, prevent the generation of accident.
In the prior art, the method for test vacuum tightness is to adopt the magnetic charging method to measure mostly.Two contacts of vacuum switch arc-chutes are drawn back certain distance; Apply the electric field pulse high pressure; Arc-chutes are placed in the solenoid coil or the electromagnet coil is placed the arc-chutes outside, pass to big electric current to coil, thereby in arc-chutes, produce and the synchronous pulsed magnetic field of high pressure.Like this, under the effect of impulse magnetic field and highfield, the charged ion in the arc-chutes is done helical motion, and with the residual gas molecule ionization that bumps, gas current that is produced and residual gas density are that vacuum tightness is approximated to proportionate relationship.For different vacuum tube models (cast), because its structure is different, under the condition in equal clearance between open contacts, equal vacuum tightness, equal electric field and magnetic field, the size of gas current is also inequality.Can calibrate the vacuum tightness of various casts and the corresponding relation curve between gas current through experiment.After predicting gas current, just can obtain the vacuum tightness of this cast through gas current one curve of vacuum of this cast of inquiry.The method test result of this test vacuum tightness is accurate, but for the device that detects and the environment of detection, higher requirement is arranged all, thus against vacuum degree measuring accuracy to require be not too high situation, it obviously is inappropriate using this device to detect vacuum tightness.
Summary of the invention
The object of the present invention is to provide a kind of vacuum line vacuum detecting method, may further comprise the steps: temperature sensor is fixedly set on the said vacuum line; Said temperature sensor detects the temperature parameter of said vacuum line tube wall; Said temperature sensor passes to data processing centre (DPC) with said temperature parameter; Said data processing centre (DPC) judges according to temperature parameter whether the vacuum tightness of vacuum line is qualified, if then do not handle; If not, then start vacuum extractor, said vacuum line is vacuumized.
Optional, the quantity of said temperature sensor is three.
Optional, said sensor is uniformly distributed on the same circumference of an xsect of said vacuum line.
Optional, the temperature-measuring range of said temperature sensor is-20 ℃ to 125 ℃.
Optional, the temperature resolution of said temperature sensor is 0.5 ℃.
Optional, the outside of each said temperature sensor all is covered with one deck insulation film.
Owing to adopted technique scheme, compared with prior art, the present invention has the following advantages: vacuum line vacuum detecting method of the present invention reaches the purpose that detects vacuum tightness through the temperature sensor detected temperatures, and is simple and convenient; Said sensor is uniformly distributed on the same circumference of an xsect of said vacuum line, helps detecting the temperature of tube wall all directions, has improved the accuracy that detects; At outer side covers one deck insulation film of temperature sensor, avoided temperature sensor to receive the interference of external environment, guaranteed to measure the accuracy of temperature.
Description of drawings
Fig. 1 is the schematic flow sheet of vacuum line vacuum detecting method of the present invention.
Fig. 2 is the vacuum line sectional view of vacuum line vacuum detecting method of the present invention.
Fig. 3 is the front view of the vacuum line of vacuum line vacuum detecting method of the present invention.
Embodiment
Do detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
At first; Please refer to Fig. 1; Fig. 1 is the schematic flow sheet of Fig. 1 for vacuum line vacuum detecting method of the present invention; Can find out that on scheming vacuum line vacuum detecting method of the present invention may further comprise the steps: step 21: temperature sensor is fixedly set on the said vacuum line, and temperature sensor is used to detect the temperature on the tube wall of vacuum line; Step 22: said temperature sensor detects the temperature parameter of said vacuum line tube wall; Step 23: said temperature sensor passes to data processing centre (DPC) with said temperature parameter; Step 24: said data processing centre (DPC) judges according to temperature parameter whether the vacuum tightness of vacuum line is qualified, if then change step 26 over to: do not handle; If not, then change step 25 over to: start vacuum extractor, said vacuum line is vacuumized.Because heat-conducting oil pipes is positioned at said vacuum line, and is vacuum between heat-conducting oil pipes and the said vacuum line, the environment of vacuum can prevent the loss of the heat of heat-conducting oil pipes, heat-conducting oil pipes is played the effect of insulation.When the vacuum tightness between heat-conducting oil pipes and the said vacuum line reduced, the heat insulation effect of heat-conducting oil pipes just will descend, thereby heat is transmitted on the vacuum line, made that the temperature on the vacuum line raises.Therefore, detect the temperature variation on the vacuum line, just can know whether the situation of the vacuum tightness in the vacuum line is normal.Too high or temperature rises when too fast when temperature, shows that the vacuum tightness in the vacuum line descends, and just will use evacuator to carrying out vacuum pumping in the said vacuum line this moment, avoids the loss of the heat on the heat-conducting oil pipes.
Then; Please refer to Fig. 2, Fig. 2 is the vacuum line sectional view of vacuum line vacuum detecting method of the present invention, among Fig. 2; Tube wall at vacuum line 14; Be provided with altogether on the same circumference of an xsect that 11, three temperature sensors 11 of three temperature sensors are uniformly distributed in said vacuum line 14, purpose is evenly to detect the temperature of vacuum line from three directions.When the vacuum tightness of the vacuum 15 between vacuum tube road 14 and the heat-conducting oil pipes 10 reduces; Heat on the heat-conducting oil pipes 10 just can conduct on the vacuum line 14; Have at least a temperature sensor 11 just can detect the variation of temperature of this direction, descend, in time take measures thereby derive vacuum tightness.Fig. 3 is the front view of the vacuum line of vacuum line vacuum detecting method of the present invention, can see among the figure that temperature sensor 11 is set up to be affixed on the vacuum line 14.
Vacuum line vacuum detecting method of the present invention reaches the purpose that detects vacuum tightness through the temperature sensor detected temperatures, and is simple and convenient; Said sensor is uniformly distributed on the same circumference of an xsect of said vacuum line, helps detecting the temperature of tube wall all directions, has improved the accuracy that detects; At outer side covers one deck insulation film of temperature sensor, avoided temperature sensor to receive the interference of external environment, guaranteed to measure the accuracy of temperature.
Though the present invention discloses as above with preferred embodiment, the present invention is defined in this.Any those skilled in the art are not breaking away from the spirit and scope of the present invention, all can do various changes and modification, so protection scope of the present invention should be as the criterion with claim institute restricted portion.
Claims (6)
1. a vacuum line vacuum detecting method is characterized in that, may further comprise the steps:
Temperature sensor is fixedly set on the said vacuum line;
Said temperature sensor detects the temperature parameter of said vacuum line tube wall;
Said temperature sensor passes to data processing centre (DPC) with said temperature parameter;
Said data processing centre (DPC) judges according to temperature parameter whether the vacuum tightness of vacuum line is qualified, if then do not handle; If not, then start vacuum extractor, said vacuum line is vacuumized.
2. vacuum line vacuum detecting method according to claim 1 is characterized in that: the quantity of said temperature sensor is three.
3. vacuum line vacuum detecting method according to claim 2 is characterized in that: said sensor is uniformly distributed on the same circumference of an xsect of said vacuum line.
4. vacuum line vacuum detecting method according to claim 1 is characterized in that: the temperature-measuring range of said temperature sensor is-20 ℃ to 125 ℃.
5. vacuum line vacuum detecting method according to claim 1 is characterized in that: the temperature resolution of said temperature sensor is 0.5 ℃.
6. vacuum line vacuum detecting method according to claim 1 is characterized in that: the outside of each said temperature sensor all is covered with one deck insulation film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105640538A CN102478444A (en) | 2010-11-26 | 2010-11-26 | Method for detecting vacuum degree of vacuum pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105640538A CN102478444A (en) | 2010-11-26 | 2010-11-26 | Method for detecting vacuum degree of vacuum pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102478444A true CN102478444A (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105640538A Pending CN102478444A (en) | 2010-11-26 | 2010-11-26 | Method for detecting vacuum degree of vacuum pipeline |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609365A (en) * | 2016-03-15 | 2016-05-25 | 西安艾力电气设备有限公司 | Online detection method for vacuum degree of vacuum breaker and detection device employing online detection method |
| CN105630046A (en) * | 2015-12-31 | 2016-06-01 | 山东天工石油装备有限公司 | Pipeline intelligent monitoring device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794839A (en) * | 1980-12-05 | 1982-06-12 | Nec Corp | Storage device |
| JPS6474428A (en) * | 1987-09-17 | 1989-03-20 | Tokuda Seisakusho | Pressure measuring instrument |
| CN2233082Y (en) * | 1994-07-16 | 1996-08-14 | 中国石化齐鲁石油化工公司 | Air leakage alarm for vacuum system |
| CN101435730A (en) * | 2007-11-12 | 2009-05-20 | 林唯耕 | Method and apparatus for detecting hot pipe vacuum degree |
| CN101788364A (en) * | 2010-01-29 | 2010-07-28 | 翟传伟 | Vacuum-degree detection device of vacuum thermal-insulation plate |
-
2010
- 2010-11-26 CN CN2010105640538A patent/CN102478444A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794839A (en) * | 1980-12-05 | 1982-06-12 | Nec Corp | Storage device |
| JPS6474428A (en) * | 1987-09-17 | 1989-03-20 | Tokuda Seisakusho | Pressure measuring instrument |
| CN2233082Y (en) * | 1994-07-16 | 1996-08-14 | 中国石化齐鲁石油化工公司 | Air leakage alarm for vacuum system |
| CN101435730A (en) * | 2007-11-12 | 2009-05-20 | 林唯耕 | Method and apparatus for detecting hot pipe vacuum degree |
| CN101788364A (en) * | 2010-01-29 | 2010-07-28 | 翟传伟 | Vacuum-degree detection device of vacuum thermal-insulation plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105630046A (en) * | 2015-12-31 | 2016-06-01 | 山东天工石油装备有限公司 | Pipeline intelligent monitoring device |
| CN105630046B (en) * | 2015-12-31 | 2017-08-04 | 山东天工石油装备有限公司 | A kind of pipeline Intellectualized monitoring device |
| CN105609365A (en) * | 2016-03-15 | 2016-05-25 | 西安艾力电气设备有限公司 | Online detection method for vacuum degree of vacuum breaker and detection device employing online detection method |
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Application publication date: 20120530 |