CN204461470U - Electrothermal tube proving installation - Google Patents
Electrothermal tube proving installation Download PDFInfo
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- CN204461470U CN204461470U CN201420859620.6U CN201420859620U CN204461470U CN 204461470 U CN204461470 U CN 204461470U CN 201420859620 U CN201420859620 U CN 201420859620U CN 204461470 U CN204461470 U CN 204461470U
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- electrothermal tube
- tube
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Abstract
The purpose of this utility model proposes a kind of electrothermal tube proving installation, carries out testing for electrothermal tube security performance comprehensively, reliably.Electrothermal tube proving installation of the present utility model comprises the metallic test cylinder that has movable cover, and the top of described test barrel is connected with feed tube and gas outlet, and described feed tube is provided with liquid feed valve, and described gas outlet is provided with vent valve; The bottom of test barrel is provided with discharging tube and draft tube, and described discharging tube is provided with tapping valve, and described draft tube is provided with gas admittance valve; Described test barrel is connected with rain glass, hydralic pressure gauge, thermometer by pipeline, and the cylindrical shell of test barrel is connected with ground terminal by wire, and test barrel is provided with the calibrating terminal be communicated with inside and outside test barrel.The test of the applicable various electrothermal tube of electrothermal tube proving installation of the present utility model, its method of testing is convenient, reliable, accurate, can meet the factory testing of electrothermal tube.
Description
Technical field
The utility model belongs to electrothermal tube technical field of measurement and test, is specifically related to a kind of electrothermal tube proving installation.
Background technology
Electrothermal tube (tubular electrothermal element) take metal tube as shell (comprising stainless steel, copper tube), along central shaft in pipe to distributing auger lectrothermal alloy wire (nickel chromium triangle, ferrochrome), its fill gaps compacting has the magnesium oxide sand of good insulation heat conductivility, mouth of pipe two ends silica gel sealing, this electrothermal tube can add hot-air, metal die and various liquid.
The kind of current electrothermal tube is more, but does not also have a kind of comprehensive test device that can carry out Validity Test to electrothermal tube security performance.Method and the corresponding drawback of the test of current electrothermal tube security performance are as follows: when 1, surveying hydraulic pressure, electrothermal tube product is contained on electric heater, carries out the pressure testing of daily water swivel boiling water, have have water-tightly just checked and accepted, testing its safety index; When 2, surveying 100 DEG C of water temperatures, electrothermal tube is placed on common container, and the safety index of test is generally all tested between 95 DEG C ~ 99 DEG C, its data are inaccurate, and because of container blow-by, the water surface and air contact surfaces amass larger, heat uninterruptedly loses, and cannot reach 100 DEG C of coolant-temperature gage tests; 3, do not adopt constant test way during oil temperature test, adopt water filling to heat test; Test without employing packoff when 4, surveying air pressure.
Summary of the invention
The purpose of this utility model proposes a kind of electrothermal tube proving installation, carries out testing for electrothermal tube security performance comprehensively, reliably.
Electrothermal tube proving installation of the present utility model comprises the metallic test cylinder that has movable cover, and the top of described test barrel is connected with feed tube and gas outlet, and described feed tube is provided with liquid feed valve, and described gas outlet is provided with vent valve; The bottom of test barrel is provided with discharging tube and draft tube, and described discharging tube is provided with tapping valve, and described draft tube is provided with gas admittance valve; Described test barrel is connected with rain glass, hydralic pressure gauge, thermometer by pipeline, and the cylindrical shell of test barrel is connected with ground terminal by wire, and test barrel is provided with the calibrating terminal be communicated with inside and outside test barrel.
Further, be convenient test, described calibrating terminal comprises proof voltage calibrating terminal and leakage current testing terminal.
Further, for convenience of injecting air in test barrel, described draft tube is connected with air compressor.
Further, for convenience of injecting the required liquid of test in test barrel, described feed tube is connected with water pump.
Apply the electrothermal tube method of testing of above-mentioned electrothermal tube proving installation, comprise water pressure resistance test, air pressure resistance test, high temperature resistant test, normality test and leakage current testing; Wherein:
The step of water pressure resistance test is as follows: open cover, be put in test barrel by electrothermal tube to be measured, closes cover; Gas admittance valve, vent valve, tapping valve are closed, opens liquid feed valve, water filling in test barrel, utilize the hydraulic pressure in hydralic pressure gauge monitor test cylinder, close liquid feed valve when hydraulic pressure reaches predetermined pressure; After leaving standstill the schedule time, open tapping valve to discharge the water in test barrel, open cover, take out electrothermal tube to be measured, if crackle does not appear in electrothermal tube surface, represent that electrothermal tube is qualified, electrothermal tube surface occurs that crackle then represents that electrothermal tube is defective.
Air pressure resistance testing procedure is as follows: open cover, is put in test barrel by electrothermal tube to be measured, closes cover; By liquid feed valve, tapping valve, exhaust valve closure, open gas admittance valve, inflate in test barrel, utilize the air pressure in rain glass monitor test cylinder, close gas admittance valve when air pressure reaches predetermined pressure; After leaving standstill the schedule time, open vent valve and cover, take out electrothermal tube to be measured, if crackle does not appear in electrothermal tube surface, represent that electrothermal tube is qualified, electrothermal tube surface occurs that crackle then represents that electrothermal tube is defective.
High temperature resistant testing procedure is as follows: open cover, the electrothermal tube to be measured being connected to power supply is put in test barrel, the power end of one end of calibrating terminal with electrothermal tube to be measured is connected, the other end is connected with withstands voltage tester, the earth terminal of withstands voltage tester is connected with the ground terminal of test barrel, closes cover; Tapping valve and gas admittance valve are closed, opens liquid feed valve and vent valve, in test barrel, inject silicone oil, then with closing liquid feed valve and vent valve; Connect the power supply of electrothermal tube, electrothermal tube is generated heat, and utilizes the temperature of silicone oil in thermometer monitoring and test cylinder, after the temperature of silicone oil reaches predetermined temperature in test barrel, close the power supply of electrothermal tube; Make withstands voltage tester export predetermined voltage and keep the schedule time, finally close withstands voltage tester, take out electrothermal tube, if electrothermal tube does not puncture, represent that electrothermal tube is qualified, electrothermal tube occurs that puncturing warning then represents that electrothermal tube is defective.
Normality testing procedure is as follows: open cover, the electrothermal tube to be measured being connected to power supply is put in test barrel, the power end of one end of calibrating terminal with electrothermal tube to be measured is connected, the other end is connected with withstands voltage tester, the earth terminal of withstands voltage tester is connected with the ground terminal of test barrel, closes cover; Liquid feed valve, tapping valve and gas admittance valve are closed, opens vent valve; Connect the power supply of electrothermal tube, electrothermal tube is generated heat, and utilizes the temperature of air in thermometer monitoring and test cylinder, after the temperature of air reaches predetermined temperature in test barrel, close the power supply of electrothermal tube; Make withstands voltage tester export predetermined voltage keep the schedule time, finally close withstands voltage tester, take out electrothermal tube, if electrothermal tube does not puncture, represent that electrothermal tube is qualified, electrothermal tube occurs puncturing and then represents that electrothermal tube is defective.
Leakage current testing step is as follows: open cover, the electrothermal tube to be measured being connected to power supply is put in test barrel, the body of one end of calibrating terminal with electrothermal tube to be measured is connected, the other end is connected with leakage current tester, the earth terminal of leakage current tester is connected with the ground terminal of test barrel, closes cover; Tapping valve and gas admittance valve are closed, opens liquid feed valve and vent valve, in test barrel, inject silicone oil, then with closing liquid feed valve and vent valve; Connect the power supply of electrothermal tube, electrothermal tube is generated heat, and utilize the temperature of silicone oil in thermometer monitoring and test cylinder, after the temperature of silicone oil in test barrel reaches predetermined temperature and is stable, carry out leakage current testing, if leakage current tester is not reported to the police in above process, represent that electrothermal tube is qualified, leakage current tester occurs reporting to the police and then represents that electrothermal tube is defective; Finally close the power supply of electrothermal tube.
The test of the applicable various electrothermal tube of electrothermal tube proving installation of the present utility model, its method of testing is convenient, reliable, accurate, can meet the factory testing of electrothermal tube.
Accompanying drawing explanation
Fig. 1 is the structural representation of electrothermal tube proving installation of the present utility model.
Accompanying drawing indicates: 1, test barrel; 2, feed tube; 3, gas outlet; 4, liquid feed valve; 5, vent valve; 6, discharging tube; 7, draft tube; 8, tapping valve; 9, gas admittance valve; 10, rain glass; 11, hydralic pressure gauge; 12, thermometer; 13, ground terminal; 14, proof voltage calibrating terminal; 15, leakage current testing terminal; 16, air compressor; 17, water pump.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, the effect and principle of work etc. of embodiment of the present utility model as the mutual alignment between the shape of involved each component, structure, each several part and annexation, each several part are described in further detail.
Embodiment 1:
As shown in the figure (cover not shown in FIG.), the electrothermal tube proving installation of the present embodiment comprises the metallic test cylinder 1 that has movable cover, the top of described test barrel 1 is connected with feed tube 2 and gas outlet 3, and described feed tube 2 is provided with liquid feed valve 4, and described gas outlet 3 is provided with vent valve 5; The bottom of test barrel 1 is provided with discharging tube 6 and draft tube 7, and described discharging tube 6 is provided with tapping valve 8, and described draft tube 7 is provided with gas admittance valve 9; Described test barrel 1 is connected with rain glass 10, hydralic pressure gauge 11, thermometer 12 by pipeline, and the cylindrical shell of test barrel 1 is connected with ground terminal 13 by wire, and test barrel 1 is provided with and is communicated with proof voltage calibrating terminal 14 inside and outside test barrel 1 and leakage current testing terminal 15.
For convenience of injecting air in test barrel 1, described draft tube 7 is connected with air compressor 16.
For convenience of injecting the required liquid of test in test barrel 1, described feed tube 2 is connected with water pump 17.
Said temperature table 12 can utilize Displaying Meter and thermopair to make, and repeats no more herein.
Apply the electrothermal tube method of testing of above-mentioned electrothermal tube proving installation, comprise water pressure resistance test, air pressure resistance test, high temperature resistant test, normality test and leakage current testing; Wherein:
The step of water pressure resistance test is as follows: open cover, be put in by electrothermal tube to be measured in test barrel 1, closes cover; Gas admittance valve 9, vent valve 5, tapping valve 8 are closed, opens liquid feed valve 4, water filling in test barrel 1, utilize the hydraulic pressure in hydralic pressure gauge 11 monitor test cylinder 1, close liquid feed valve 4 when hydraulic pressure reaches predetermined pressure; After leaving standstill the schedule time, open tapping valve 8 to discharge the water in test barrel 1, open cover, take out electrothermal tube to be measured, if crackle does not appear in electrothermal tube surface, represent that electrothermal tube is qualified, electrothermal tube surface occurs that crackle then represents that electrothermal tube is defective.
Air pressure resistance testing procedure is as follows: open cover, is put in by electrothermal tube to be measured in test barrel 1, closes cover; Liquid feed valve 4, tapping valve 8, vent valve 5 are closed, opens gas admittance valve 9, inflate in test barrel 1, utilize the air pressure in rain glass 10 monitor test cylinder 1, close gas admittance valve 9 when air pressure reaches predetermined pressure; Leave standstill after one hour, open vent valve 5 and cover, take out electrothermal tube to be measured, if crackle does not appear in electrothermal tube surface, represent that electrothermal tube is qualified, electrothermal tube surface occurs that crackle then represents that electrothermal tube is defective.
High temperature resistant testing procedure is as follows: open cover, the electrothermal tube to be measured being connected to power supply is put in test barrel 1, the power end of one end of calibrating terminal with electrothermal tube to be measured is connected, the other end is connected with withstands voltage tester, the earth terminal of withstands voltage tester is connected with the ground terminal 13 of test barrel 1, closes cover; Tapping valve 8 and gas admittance valve 9 are closed, opens liquid feed valve 4 and vent valve 5, in test barrel 1, inject silicone oil, then with closing liquid feed valve 4 and vent valve 5; Connect the power supply of electrothermal tube, electrothermal tube is generated heat, and utilizes the temperature of silicone oil in thermometer 12 monitoring and test cylinder 1, after the temperature of silicone oil reaches predetermined temperature in test barrel 1, close the power supply of electrothermal tube; Make withstands voltage tester export 1250V voltage keep 60 seconds, finally close withstands voltage tester, take out electrothermal tube, if electrothermal tube does not puncture, represent that electrothermal tube is qualified, electrothermal tube occurs puncturing and then represents that electrothermal tube is defective.
Normality testing procedure is as follows: open cover, the electrothermal tube to be measured being connected to power supply is put in test barrel 1, the power end of one end of calibrating terminal with electrothermal tube to be measured is connected, the other end is connected with withstands voltage tester, the earth terminal of withstands voltage tester is connected with the ground terminal 13 of test barrel 1, closes cover; Liquid feed valve 4, tapping valve 8 and gas admittance valve 9 are closed, opens vent valve 5; Connect the power supply of electrothermal tube, electrothermal tube is generated heat, and utilizes the temperature of air in thermometer 12 monitoring and test cylinder 1, after the temperature of air reaches predetermined temperature in test barrel 1, close the power supply of electrothermal tube; Make withstands voltage tester export 1250V voltage keep 60 seconds, finally close withstands voltage tester, take out electrothermal tube, if electrothermal tube does not puncture, represent that electrothermal tube is qualified, electrothermal tube occurs puncturing and then represents that electrothermal tube is defective.
Leakage current testing step is as follows: open cover, the electrothermal tube to be measured being connected to power supply is put in test barrel 1, the body of one end of calibrating terminal with electrothermal tube to be measured is connected, the other end is connected with leakage current tester, the earth terminal of leakage current tester is connected with the ground terminal 13 of test barrel 1, closes cover; Tapping valve 8 and gas admittance valve 9 are closed, opens liquid feed valve 4 and vent valve 5, in test barrel 1, inject silicone oil, then with closing liquid feed valve 4 and vent valve 5; Connect the power supply of electrothermal tube, electrothermal tube is generated heat, and utilize the temperature of silicone oil in thermometer 12 monitoring and test cylinder 1, after the temperature of silicone oil in test barrel 1 reaches predetermined temperature and is stable, carry out leakage current testing, if leakage current tester is not reported to the police in above process, represent that electrothermal tube is qualified, leakage current tester occurs reporting to the police and then represents that electrothermal tube is defective; Finally close the power supply of electrothermal tube.
Claims (4)
1. an electrothermal tube proving installation, it is characterized in that comprising the metallic test cylinder that has movable cover, the top of described test barrel is connected with feed tube and gas outlet, and described feed tube is provided with liquid feed valve, and described gas outlet is provided with vent valve; The bottom of test barrel is provided with discharging tube and draft tube, and described discharging tube is provided with tapping valve, and described draft tube is provided with gas admittance valve; Described test barrel is connected with rain glass, hydralic pressure gauge, thermometer by pipeline, and the cylindrical shell of test barrel is connected with ground terminal by wire, and test barrel is provided with the calibrating terminal be communicated with inside and outside test barrel.
2. electrothermal tube proving installation according to claim 1, is characterized in that described calibrating terminal comprises proof voltage calibrating terminal and leakage current testing terminal.
3. electrothermal tube proving installation according to claim 1 and 2, is characterized in that described draft tube is connected with air compressor.
4. electrothermal tube proving installation according to claim 1 and 2, is characterized in that described feed tube is connected with water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859620.6U CN204461470U (en) | 2014-12-30 | 2014-12-30 | Electrothermal tube proving installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420859620.6U CN204461470U (en) | 2014-12-30 | 2014-12-30 | Electrothermal tube proving installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204461470U true CN204461470U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420859620.6U Expired - Fee Related CN204461470U (en) | 2014-12-30 | 2014-12-30 | Electrothermal tube proving installation |
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| Country | Link |
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| CN (1) | CN204461470U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535113A (en) * | 2014-12-30 | 2015-04-22 | 信宜市汇美电器有限公司 | Electric heating tube testing device and method |
-
2014
- 2014-12-30 CN CN201420859620.6U patent/CN204461470U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535113A (en) * | 2014-12-30 | 2015-04-22 | 信宜市汇美电器有限公司 | Electric heating tube testing device and method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20151230 |
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| EXPY | Termination of patent right or utility model |