CN201837502U - Low-temperature gas cylinder sandwich layer vacuum degree tester - Google Patents
Low-temperature gas cylinder sandwich layer vacuum degree tester Download PDFInfo
- Publication number
- CN201837502U CN201837502U CN2010205919363U CN201020591936U CN201837502U CN 201837502 U CN201837502 U CN 201837502U CN 2010205919363 U CN2010205919363 U CN 2010205919363U CN 201020591936 U CN201020591936 U CN 201020591936U CN 201837502 U CN201837502 U CN 201837502U
- Authority
- CN
- China
- Prior art keywords
- vacuum
- low
- pipe
- vacuum degree
- gas cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model relates to a low-temperature gas cylinder sandwich layer vacuum degree tester, which comprises a vacuum pump, a vacuum degree meter, a drawing device, a rubber connecting pipe, a T-pipe and a low-temperature stop valve, wherein the air outlet pipe of the drawing device is connected with one end of the T-pipe through the rubber connecting pipe, the other two ends of the T-pipe are respectively connected with the low-temperature stop valve and the vacuum sensor of the vacuum degree tester, and the other end of the low-temperature stop valve is connected with a vacuum pump connecting pipe. Since the gap of the inner cavity of the T-pipe between the drawing device and the low-temperature stop valve is very small, the error of the measured vacuum degree of the low-temperature gas cylinder sandwich layer is very small, and can be completely controlled to be about 0.1%. The utility model is simple and reasonable in structure, is safe and convenient to use, is small in measurement error, can truly reflect the vacuum degree of the low-temperature gas cylinder sandwich layer, and is particularly suitable for special equipment safety supervision and inspection department.
Description
Technical field
The utility model relates to a kind of pick-up unit of vacuum tightness, and the pick-up unit of the vacuum tightness in particularly a kind of low temperature cylinder interlayer belongs to gas tank or metering field.
Background technology
Low temperature cylinder is as the special equipment of transportation, storage liquefied gas at low temp, its range of application is increasingly extensive, quantity increases sharply, safety in order to ensure low temperature cylinder, all need to stipulate by " gas cylinder safely supervision rules ", require check in per 3 years once, wherein, test to the low temperature cylinder layer vacuum, be the important indicator of low temperature cylinder periodic inspection, if layer vacuum is bad, just can not be adiabatic, then all can not ensure, and have great potential safety hazard energy-conservation, safe and reliable use.Must reprocess for the bad low temperature cylinder of layer vacuum and could use after vacuumizing.For the vacuum tightness test of low temperature cylinder, owing to still do not have isolated plant at present, the device that can only utilize system to take a sample test vacuum tightness replaces.But this device is after connecting by the duct coupling that vacuumizes vacuum stopper direct and on the low temperature cylinder, drawing back vacuum stopper measures the vacuum tightness in the gas cylinder interlayer, but because the vacuum tightness in the pipeline can't be pumped into consistent with the vacuum tightness in the interlayer, and no matter the vacuum tightness in the pipeline is to take out greatly in advance, little and not enough, in case draw back vacuum stopper, the capital makes the vacuum tightness in the low temperature cylinder interlayer mix with the vacuum tightness in the pipeline, but because of duct coupling very long, cavity is bigger, can before measurement, just change the vacuum tightness in the low temperature cylinder interlayer, measuring error is strengthened, can not truly reflect the low temperature cylinder layer vacuum.
Summary of the invention
The purpose of this utility model is a weak point of stating above-mentioned existing apparatus in order to restrain, design a kind of simple and reasonable, safe and convenient to use, measuring error is little, can truly reflect the low temperature cylinder layer vacuum proving installation of vacuum tightness.
Low temperature cylinder layer vacuum proving installation of the present utility model, comprise that vacuum pump, vacuum tightness estimates instrument and draw-off gear, it is characterized in that also comprising rubber linking tube, three-way pipe and cryogenic globe valve, the escape pipe of described draw-off gear is connected with an end of three-way pipe through rubber linking tube, the other two ends of three-way pipe are connected with the vacuum transducer that cryogenic globe valve and vacuum tightness are estimated instrument respectively, and the cryogenic globe valve other end is connected with the vacuum pump adapting pipe.
Low temperature cylinder layer vacuum proving installation of the present utility model because the inner chamber space of the three-way pipe between draw-off gear and the cryogenic globe valve is very little, makes the error that records the low temperature cylinder layer vacuum very little, can be controlled at about 0.1% fully.Have simple and reasonable, safe and convenient to use, measuring error is little, can truly reflect the vacuum tightness of low temperature cylinder interlayer, be particularly suitable for special equipment supervision and inspection on safety department and use.
Description of drawings
Accompanying drawing is a kind of structural representation among a kind of embodiment of the present utility model.
Among the figure 1 is vacuum pump, the 2nd, and vacuum tightness is estimated instrument, and 2-2 is a vacuum transducer, the 3rd, cryogenic globe valve, the 4th, three-way pipe, the 5th, rubber linking tube, the 6th, draw-off gear, 6-1 are the drawing covers, 6-2 is a pull bar, the 7th, low temperature cylinder, 7-1 vacuum obturating plug, 7-2 is a vacuum stopper.
Embodiment
Accompanying drawing is non-limiting to disclose a specific embodiment of the present utility model, is further described as follows in conjunction with the accompanying drawings.
Referring to accompanying drawing, low temperature cylinder layer vacuum proving installation of the present utility model, comprise that vacuum pump 1, vacuum tightness estimates instrument 2 and draw-off gear 6, it is characterized in that also comprising rubber linking tube 5, three-way pipe 4 and cryogenic globe valve 3, the escape pipe of described draw-off gear 6 is connected with an end of three-way pipe 4 through rubber linking tube 5, the other two ends of three-way pipe 4 are connected with the vacuum transducer 2-1 that cryogenic globe valve 3 and vacuum tightness are estimated instrument 2 respectively, and cryogenic globe valve 3 other ends are connected with vacuum pump 1 adapting pipe.
During test, the drawing cover 6-1 of draw-off gear 6 is sleeved on the vacuum obturating plug 7-1 of low temperature cylinder 7, with the front end screw rod spinning of the pull bar 6-2 of draw-off gear 6 in the drawing screw of vacuum stopper 7-2, open cryogenic globe valve 3, start vacuum pump 1, with the vacuum tightnesss in the three-way pipe 4 be extracted in advance set numerical value after, turn-off cryogenic globe valve 3, on pull out pull bar 6-2 and make vacuum stopper 7-2 leave vacuum obturating plug 7-1, vacuum tightness is estimated the vacuum tightness that instrument 2 can be measured these low temperature cylinder 7 interlayers.The low temperature cylinder that the against vacuum degree is lower, can open cryogenic globe valve 3, start vacuum pump 1, with low temperature cylinder 7 layer vacuums be extracted into set numerical value after, turn-off cryogenic globe valve 3, press down pull bar 6-2 vacuum stopper 7-2 pushed back among the vacuum obturating plug 7-1, check not have gas leakage after, draw-off gear 6 can be taken off from the vacuum obturating plug 7-1 of low temperature cylinder and get final product.For the vacuum obturating plug of different size, only need to change corresponding draw-off gear and get final product.
Claims (1)
1. low temperature cylinder layer vacuum proving installation, comprise that vacuum pump, vacuum tightness estimates instrument and draw-off gear, it is characterized in that also comprising rubber linking tube, three-way pipe and cryogenic globe valve, the escape pipe of described draw-off gear is connected with an end of three-way pipe through rubber linking tube, the other two ends of three-way pipe are connected with the vacuum transducer that cryogenic globe valve and vacuum tightness are estimated instrument respectively, and the cryogenic globe valve other end and vacuum pump adapting pipe connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919363U CN201837502U (en) | 2010-11-04 | 2010-11-04 | Low-temperature gas cylinder sandwich layer vacuum degree tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919363U CN201837502U (en) | 2010-11-04 | 2010-11-04 | Low-temperature gas cylinder sandwich layer vacuum degree tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201837502U true CN201837502U (en) | 2011-05-18 |
Family
ID=44007611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205919363U Expired - Fee Related CN201837502U (en) | 2010-11-04 | 2010-11-04 | Low-temperature gas cylinder sandwich layer vacuum degree tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201837502U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636311A (en) * | 2012-04-23 | 2012-08-15 | 中国环境科学研究院 | Alarm device of rotary evaporator vacuum system |
| CN103471764A (en) * | 2013-09-26 | 2013-12-25 | 张家港韩中深冷科技有限公司 | Device for testing vacuum degree of interlayer of automotive liquefied natural gas cylinder |
| CN103868644A (en) * | 2012-12-18 | 2014-06-18 | 青岛瑞丰气体有限公司 | Low-temperature gas cylinder interlayer vacuum degree detection device and use method thereof |
| CN104930043A (en) * | 2014-03-17 | 2015-09-23 | 科沃斯机器人科技(苏州)有限公司 | Intelligent safety sucker, self-moving adsorption system, and control method thereof |
-
2010
- 2010-11-04 CN CN2010205919363U patent/CN201837502U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636311A (en) * | 2012-04-23 | 2012-08-15 | 中国环境科学研究院 | Alarm device of rotary evaporator vacuum system |
| CN103868644A (en) * | 2012-12-18 | 2014-06-18 | 青岛瑞丰气体有限公司 | Low-temperature gas cylinder interlayer vacuum degree detection device and use method thereof |
| CN103471764A (en) * | 2013-09-26 | 2013-12-25 | 张家港韩中深冷科技有限公司 | Device for testing vacuum degree of interlayer of automotive liquefied natural gas cylinder |
| CN104930043A (en) * | 2014-03-17 | 2015-09-23 | 科沃斯机器人科技(苏州)有限公司 | Intelligent safety sucker, self-moving adsorption system, and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204439603U (en) | Online gc calibration equipment | |
| CN201837502U (en) | Low-temperature gas cylinder sandwich layer vacuum degree tester | |
| CN201643862U (en) | Detection device for testing integrity of filter element structure | |
| CN203594590U (en) | Detection device of oil pump | |
| CN110618087A (en) | Corrosion resistance detection device for central heating pipeline | |
| CN203052194U (en) | Prying and filling device for LNG (Liquefied Natural Gas) gas station | |
| CN203616063U (en) | Valve oil seal static sealing performance detection device | |
| CN204730900U (en) | A kind of Portable oil-gas reclaims gas liquid ratio proving installation | |
| CN102564709A (en) | Leakage detecting method for sealing structure part | |
| WO2016008273A1 (en) | Checking platform for sulfur hexafluoride gas humidity sensor under pressure | |
| CN203275127U (en) | Oil extraction device for transformer | |
| CN206409820U (en) | A kind of portable combined ocean platform barrel of sending and receiving the ball | |
| CN209169777U (en) | Vacuum oil filling device for transformer | |
| CN203929719U (en) | Coal seam hydrogen sulfide content determinator | |
| CN203798515U (en) | Equipment for testing sealing of oil cooler by using mixing of helium and air | |
| CN202255463U (en) | Pressure and flow test system | |
| CN203502166U (en) | Device for testing vacuum degree of interlayer of automotive liquefied natural gas cylinder | |
| CN204896389U (en) | Novel double -deck oil storage tank | |
| CN202522374U (en) | Diaphragm-type oil-water isolator | |
| CN204177790U (en) | A kind of gas controlling device | |
| CN204807491U (en) | Static evaporation rate tester | |
| CN201852739U (en) | Pipeline pressure fluctuation experiment device | |
| CN202195864U (en) | Device for onsite calibration of aircraft liquid flow | |
| CN203688173U (en) | Seepage tester of liquid filter | |
| CN203241113U (en) | Transformer respirator online monitoring instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SPECIAL EQUIPMENT SAFETY SUPERCISION INSPECTION IN Free format text: FORMER OWNER: JIANGSU SPECIAL EQUIPMENT SAFETY SUPERVISION + INSPECTION INSTITUTE CHANGZHOU BRANCH INSTITUTE Effective date: 20150513 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150513 Address after: 213016 No. 51 middle Longjiang Road, Jiangsu, Changzhou Patentee after: Jiangsu Special Equipment Vessel Supervisory Institute Address before: 213016 No. 51 middle Longjiang Road, Jiangsu, Changzhou Patentee before: Jiangsu Special Equipment Safety Supervision & Inspection Institute Changzhou Branch Institute |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20151104 |
|
| EXPY | Termination of patent right or utility model |