CN201837564U - Calibration device for low-temperature gas bottle safety valve - Google Patents
Calibration device for low-temperature gas bottle safety valve Download PDFInfo
- Publication number
- CN201837564U CN201837564U CN2010205919081U CN201020591908U CN201837564U CN 201837564 U CN201837564 U CN 201837564U CN 2010205919081 U CN2010205919081 U CN 2010205919081U CN 201020591908 U CN201020591908 U CN 201020591908U CN 201837564 U CN201837564 U CN 201837564U
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- temperature
- safety valve
- low temperature
- valve
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Abstract
The utility model discloses a calibration device for a low-temperature gas bottle safety valve. The calibration device mainly consists of a pressure regulating low-temperature gas source, a low-temperature pressure gauge, a low-temperature container, three low-temperature stop valves and a low-temperature container safety valve, wherein the low-temperature container is covered by a heat-insulating layer. The low-temperature gas source replaces a normal-temperature gas source, the low-temperature gas bottle safety valve to be calibrated can be calibrated in an environment at the temperature the same with the actual working temperature, the safety valve is reliable in safety after being calibrated, error of calibration in normal temperature is avoided completely, and accordingly the calibration device has the advantages of simple and reasonable structure, convenience in use and operation and the like, and is particularly suitable for special equipment safety monitoring and inspection departments.
Description
Technical field
The utility model relates to a kind of verifying attachment of safety valve, particularly a kind of calibration equipment of low temperature cylinder safety valve, and the set-pressure that belongs to safety valve carries out detection range.
Background technology
Cryogenic insulated 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 cryogenic insulated cylinder, all safety valve need be installed on low temperature cylinder, pressure in the low temperature cylinder is in the safe range of setting, and when surpassing safe pressure as the pressure in the gas cylinder, safety valve Open valve automatically reduces pressure and major accident such as avoid blasting.So the quality of safety valve is extremely important, must regularly carry out verification.But also there is not special low-temperature safety valve calibration equipment now, the calibration equipment that can only adopt common safety valve is to its verification, because the set-pressure of this safety valve is verification at normal temperatures, because of its set-pressure is undesirable low temperature requirement, make its reliability be difficult to ensure at cryogenic conditions, obviously have serious potential safety hazard, the low temperature cylinder explosion accident has taken place in some areas.
Summary of the invention
The purpose of this utility model is in order to improve the security performance of cryogenic insulated cylinder, the calibration equipment that under a kind of simulation cryogenic insulated cylinder condition safety valve is carried out the low temperature cylinder safety valve of verification to be provided.
The calibration equipment of low temperature cylinder safety valve of the present utility model, comprise pressure-adjusting type low temperature source of the gas and low-temperature pressure table, also comprise 1 low-temperature (low temperature) vessel that is enclosed with heat-insulation layer, 3 cryogenic globe valve and 1 low-temperature (low temperature) vessel safety valve, the air intake opening of described low-temperature (low temperature) vessel is connected through the source of the gas delivery valve of connecting pipe with pressure-adjusting type low temperature source of the gas, the gas outlet of low-temperature (low temperature) vessel is connected with an end of 3 cryogenic globe valve respectively through connecting pipe, the other end of the 1st cryogenic globe valve wherein is connected with the low-temperature pressure table, the other end of the 2nd cryogenic globe valve is through being threaded mouthful and being connected by the low temperature cylinder safety valve of verification, the other end of the 3rd cryogenic globe valve is vacant, and the low-temperature (low temperature) vessel safety valve is installed on the low-temperature (low temperature) vessel.
In order to make accuracy of reading errorless, described low-temperature pressure table is selected 2 parallel connections for use, and the range of low-temperature pressure table is 1.5～3 times of low temperature cylinder safety valve test pressure, and precision is equal to or higher than 0.5 grade.
The calibration equipment of low temperature cylinder safety valve of the present utility model, owing to adopt the low temperature source of the gas under the environment identical, carrying out verification with actual work temperature, security performance after verification is reliable, avoided the error of verification under the normal temperature fully, have simple and reasonable, use advantages such as easy to operate, be particularly suitable for special equipment supervision and inspection on safety department and use.
Description of drawings
Accompanying drawing 1 is the structural representation of a kind of embodiment of the present utility model.
Among the figure 1 is pressure-adjusting type low temperature source of the gas, 1-1 is the source of the gas delivery valve, and 1-2 is the source of the gas pressure charging valve, the 2nd, and connecting pipe, the 3rd, low-temperature (low temperature) vessel, the 4th, low-temperature (low temperature) vessel safety valve, the 5th, low-temperature pressure table, the 6,9, the 10th, cryogenic globe valve, the 7th, by the low temperature cylinder safety valve of verification, the 8th, the mouth that is threaded, the 11st, heat-insulation layer, the 12nd, connecting pipe.
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, the calibration equipment of low temperature cylinder safety valve of the present utility model, comprise pressure-adjusting type low temperature source of the gas 1 and low-temperature pressure table 5, also comprise 1 low-temperature (low temperature) vessel 3 that is enclosed with heat-insulation layer 11,3 cryogenic globe valve 6,9,10 and 1 low-temperature (low temperature) vessel safety valve 4, the air intake opening of described low-temperature (low temperature) vessel 3 is connected with the source of the gas delivery valve 1-1 of pressure-adjusting type low temperature source of the gas 1 through connecting pipe 2, the gas outlet of low-temperature (low temperature) vessel 3 through connecting pipe 12 respectively with 3 cryogenic globe valve 6,9, an end of 10 connects, the other end of the 1st cryogenic globe valve 6 wherein is connected with low-temperature pressure table 5, the other end of the 2nd cryogenic globe valve 9 through be threaded mouthfuls 8 be connected by the low temperature cylinder safety valve 7 of verification, the other end of the 3rd cryogenic globe valve 10 is vacant, and low-temperature (low temperature) vessel safety valve 4 is installed on the low-temperature (low temperature) vessel 3.
In order to make accuracy of reading errorless, described low-temperature pressure table 5 is selected 2 parallel connections for use, and the range of low-temperature pressure table is 1.5～3 times of low temperature cylinder safety valve test pressure, and precision is equal to or higher than 0.5 grade.
During verification, to be tightly connected with cryogenic globe valve 9 through the mouth 8 that is threaded by the air intake opening of the low temperature cylinder safety valve 7 of verification, close cryogenic globe valve 10, open cryogenic globe valve 6 and 9, open the source of the gas delivery valve 1-1 of pressure-adjusting type low temperature source of the gas 1, in low-temperature (low temperature) vessel 3, import continuously by liquid nitrogen and the cryogenic gas after gasification through connecting pipe 2, make by after the low temperature cylinder safety valve 7 abundant coolings of verification, open the source of the gas pressure charging valve 1-2 of pressure-adjusting type low temperature source of the gas 1 again, output pressure is heightened gradually, and pass through tensimeter 6 and detect by the set-pressure of the low temperature cylinder safety valve 7 of verification, observe and can return seat after it is opened, with and the sealing situation whether good.For departing from will adjusting bolt by pressure and in time adjusting to setting value of set-pressure, still need revision test more than 3 times for set-pressure calibration after qualified, after guaranteeing that its stability is good and meeting in the scope that GB/T12243 allows the set-pressure deviation, can close cryogenic globe valve 9, change other low temperature cylinder safety valve 7 verification again.
Claims (2)
1. the calibration equipment of a low temperature cylinder safety valve, comprise pressure-adjusting type low temperature source of the gas and low-temperature pressure table, it is characterized in that also comprising 1 low-temperature (low temperature) vessel that is enclosed with heat-insulation layer, 3 cryogenic globe valve and 1 low-temperature (low temperature) vessel safety valve, the air intake opening of described low-temperature (low temperature) vessel is connected through the source of the gas delivery valve of connecting pipe with pressure-adjusting type low temperature source of the gas, the gas outlet of low-temperature (low temperature) vessel is connected with an end of 3 cryogenic globe valve respectively through connecting pipe, the other end of the 1st cryogenic globe valve wherein is connected with the low-temperature pressure table, the other end of the 2nd cryogenic globe valve is through being threaded mouthful and being connected by the low temperature cylinder safety valve of verification, the other end of the 3rd cryogenic globe valve is vacant, and the low-temperature (low temperature) vessel safety valve is installed on the low-temperature (low temperature) vessel.
2. the calibration equipment of low temperature cylinder safety valve as claimed in claim 1 is characterized in that described low-temperature pressure table selects 2 parallel connections for use, and the range of low-temperature pressure table is 1.5～3 times of low temperature cylinder safety valve test pressure, and precision is equal to or higher than 0.5 grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919081U CN201837564U (en) | 2010-11-04 | 2010-11-04 | Calibration device for low-temperature gas bottle safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919081U CN201837564U (en) | 2010-11-04 | 2010-11-04 | Calibration device for low-temperature gas bottle safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201837564U true CN201837564U (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205919081U Expired - Fee Related CN201837564U (en) | 2010-11-04 | 2010-11-04 | Calibration device for low-temperature gas bottle safety valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN201837564U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501793A (en) * | 2011-10-26 | 2012-06-20 | 新兴能源装备股份有限公司 | Moving detection vehicle |
| CN105403390A (en) * | 2015-12-04 | 2016-03-16 | 深圳市特种设备安全检验研究院 | Low-temperature test system for safety valve and low-temperature test method for safety valve |
| CN106840911A (en) * | 2017-01-05 | 2017-06-13 | 中国石油大学(华东) | A kind of liquid nitrogen temperature-control pressure-control freezing-thawing damage shale experimental provision and method |
-
2010
- 2010-11-04 CN CN2010205919081U patent/CN201837564U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102501793A (en) * | 2011-10-26 | 2012-06-20 | 新兴能源装备股份有限公司 | Moving detection vehicle |
| CN102501793B (en) * | 2011-10-26 | 2014-06-18 | 新兴能源装备股份有限公司 | Moving detection vehicle |
| CN105403390A (en) * | 2015-12-04 | 2016-03-16 | 深圳市特种设备安全检验研究院 | Low-temperature test system for safety valve and low-temperature test method for safety valve |
| CN105403390B (en) * | 2015-12-04 | 2018-08-14 | 深圳市特种设备安全检验研究院 | Safety valve low-temperature test system and safety valve low-temperature test method |
| CN106840911A (en) * | 2017-01-05 | 2017-06-13 | 中国石油大学(华东) | A kind of liquid nitrogen temperature-control pressure-control freezing-thawing damage shale experimental provision and method |
| CN106840911B (en) * | 2017-01-05 | 2019-12-24 | 中国石油大学(华东) | Liquid nitrogen temperature and pressure control freeze-thaw damage shale experimental device and method |
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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: 20150512 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150512 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 |