CN201866528U - Adjustment device for combined pressure-adjusting valve of low-temperature gas cylinder - Google Patents
Adjustment device for combined pressure-adjusting valve of low-temperature gas cylinder Download PDFInfo
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- CN201866528U CN201866528U CN2010205919429U CN201020591942U CN201866528U CN 201866528 U CN201866528 U CN 201866528U CN 2010205919429 U CN2010205919429 U CN 2010205919429U CN 201020591942 U CN201020591942 U CN 201020591942U CN 201866528 U CN201866528 U CN 201866528U
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Abstract
The utility model provides an adjustment device for a combined pressure-adjusting valve of a low-temperature gas cylinder. The structure of the adjustment device includes a pressure-adjusting low-temperature gas source, three low-temperature pressure gauge, one low-temperature container coated by a thermal insulating layer, one low-temperature container safety valve, three low-temperature stop valves, three three-way pipes, one return pipe, and the to-be-adjusted combined pressure-adjusting valve of the low-temperature gas cylinder. The combined pressure-adjusting valve of the low-temperature gas cylinder can be adjusted directly under an environment at a low temperature same as the practical work temperature, the safety performance of the adjusted combined pressure-adjusting valve of the low-temperature gas cylinder is reliable, the adjustment error at a normal temperature is completely avoided, and the adjustment device has the advantages of simple and reasonable structure, conveniences in use and operation, accurate and reliable measurement result and the like, so that the adjustment device is particularly suitable for being used in a safety supervision and inspection department.
Description
Technical field
The utility model relates to the particularly calibration apparatus of low temperature cylinder combined pressure-regulating valve of a kind of pressure regulator valve, belongs to combined pressure-regulating valve is detected and the adjustment field.
Background technique
Low temperature cylinder is a kind of transportation, the special equipment that stores liquefied gas at low temp, its application area is increasingly extensive, quantity increases sharply, the user of low temperature cylinder can be with its cryogenic liquide, also available its gas, also can use its pressurization gas, that press during the specification of pressurization gas has, high pressure, ultrahigh pressure, the steady pressure of the gas output after the supercharging mainly is by combined pressure-regulating valve control.In order to ensure safe in utilization, the quality of combined pressure-regulating valve is very crucial, and existing combined pressure-regulating valve all is import basically, is installed on the new low temperature cylinder after buying back and uses.But combined pressure-regulating valve also is can be bad, detection unit for the third pary certification low temperature cylinder, must decompose debugging to it, to bad combined pressure-regulating valve, must renew valve, what if can change into the easily damaged partss such as spool in the valve body can fix bad valve, this just alleviates user's burden, but also do not have at present special can be under cryogenic conditions combined pressure-regulating valve to be detected device with adjustment, make supervision and inspection on safety department fail normally to carry out always the service work of combined pressure-regulating valve.
Summary of the invention
The purpose of this utility model is the blank that under cryogenic conditions the low temperature cylinder combined pressure-regulating valve is detected in order to fill up, and designs a kind of calibration apparatus that detects under cryogenic conditions with the combined pressure-regulating valve of the low temperature cylinder safe and convenient to use of adjustment.
The calibration apparatus of the combined pressure-regulating valve of low temperature cylinder of the present utility model, comprise pressure regulating type low temperature source of the gas, 3 Low-temperature pressure tables, 1 low-temperature (low temperature) vessel that is enclosed with thermal insulation layer, 1 low-temperature (low temperature) vessel safety valve, 3 cryogenic globe valve, 3 three-way pipes, 1 reflow pipe and by the low temperature cylinder combined pressure-regulating valve of adjustment, the suction port of described low-temperature (low temperature) vessel is connected through the source of the gas delivery valve of connecting tube with pressure regulating type low temperature source of the gas, the low-temperature (low temperature) vessel safety valve is installed on the low-temperature (low temperature) vessel, the air outlet of low-temperature (low temperature) vessel is connected with an end of the 1st cryogenic globe valve, the other end of the 1st cryogenic globe valve is connected with the 1st three-way pipe, the 2nd end of the 1st three-way pipe be connected by the low temperature cylinder combined pressure-regulating valve inlet opening of adjustment, the 3rd end of the 1st three-way pipe is connected with 2 Low-temperature pressure tables through the 2nd cryogenic globe valve, be connected with the 2nd three-way pipe by the low temperature cylinder combined pressure-regulating valve delivery outlet of adjustment, the 2nd end of the 2nd three-way pipe is connected with the 3rd three-way pipe, the 3rd end of the 2nd three-way pipe through reflow pipe be connected by the low temperature cylinder combined pressure-regulating valve refluxing opening of adjustment, the 3rd end of the 3rd three-way pipe is connected with the 3rd Low-temperature pressure table, the 2nd end of the 3rd three-way pipe is connected with the 3rd cryogenic globe valve, and the other end of the 3rd cryogenic globe valve is vacant.
In order to ensure detecting quality, the range of described 3 Low-temperature pressure tables is 1.5～3 times by the low temperature cylinder combined pressure-regulating valve return pressure of adjustment, and precision is equal to or higher than 0.5 grade.
The calibration apparatus of the combined pressure-regulating valve of low temperature cylinder of the present utility model, make the low temperature cylinder combined pressure-regulating valve can directly under the low temperature environment identical, carry out verification with actual work temperature, make the Safety performance of the low temperature cylinder combined pressure-regulating valve after the verification reliable, avoided the error of verification under the normal temperature fully, have simple and reasonable, use easy to operate and measurement result to wait advantage accurately and reliably, be particularly suitable for special equipment supervision and inspection on safety department and use.
Description of drawings
Accompanying drawing 1 is an a kind of embodiment's of the present utility model structural representation.
Among the figure 1 is pressure regulating 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 tube, the 3rd, be enclosed with the low-temperature (low temperature) vessel of thermal insulation layer, the 4th, the low-temperature (low temperature) vessel safety valve, 5 and 6 is 2 Low-temperature pressure tables, 7,8,15 is 3 cryogenic globe valve, 9,11,14 is 3 three-way pipes, the 10th, the Low-temperature pressure table, the 12nd, reflow pipe, the 13rd, by the low temperature cylinder combined pressure-regulating valve of adjustment.
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 apparatus of the combined pressure-regulating valve of low temperature cylinder of the present utility model, its structure comprises pressure regulating type low temperature source of the gas 1,3 Low-temperature pressure tables 5,6,10,14,3 cryogenic globe valve of 3,1 low-temperature (low temperature) vessel safety valves of low-temperature (low temperature) vessel 7,8,15 that are enclosed with thermal insulation layer, 9,11,14,1 reflow pipes 12 of 3 three-way pipes and by the low temperature cylinder combined pressure-regulating valve 13 of adjustment.The suction port of described low-temperature (low temperature) vessel 3 is connected with the source of the gas delivery valve 1-1 of pressure regulating type low temperature source of the gas 1 through connecting tube 2, low-temperature (low temperature) vessel safety valve 4 is installed on the low-temperature (low temperature) vessel 3, the air outlet of low-temperature (low temperature) vessel 3 is connected with an end of the 1st cryogenic globe valve 15, the other end of the 1st cryogenic globe valve 15 is connected with the 1st three-way pipe 14, the 2nd end of the 1st three-way pipe 14 be connected by low temperature cylinder combined pressure-regulating valve 12 inlet openings of adjustment, the 3rd end of the 1st three-way pipe 13 is connected with 6 with 2 Low-temperature pressure tables 5 through the 2nd cryogenic globe valve 7, be connected with the 2nd three-way pipe 11 by low temperature cylinder combined pressure-regulating valve 13 delivery outlets of adjustment, the 2nd end of the 2nd three-way pipe 11 is connected with the 3rd three-way pipe 9, the 3rd end of the 2nd three-way pipe 11 through reflow pipe 12 be connected by low temperature cylinder combined pressure-regulating valve 13 refluxing openings of adjustment, the 3rd end of the 3rd three-way pipe 9 is connected with the 3rd Low-temperature pressure table 10, the 2nd end of the 3rd three-way pipe 9 is connected with the 3rd cryogenic globe valve 8, and the other end of the 3rd cryogenic globe valve 8 is vacant.
In order to ensure detecting quality, described 3 Low-temperature pressure tables 5,6 and 10 range are 1.5～3 times by the low temperature cylinder combined pressure-regulating valve return pressure of adjustment, and precision is equal to or higher than 0.5 grade.
Before the adjustment, to be installed between as shown in the figure 2 three- way pipes 14 and 11 by the low temperature cylinder combined pressure-regulating valve 13 of adjustment, during adjustment, can screw out the adjustment screw of combined type pressure governor 13, make spring be in free state, and note the original position of adjusting screw, and open the cryogenic globe valve 15 on the checking apparatus then, make pressure rise to the pressure of setting, as middle pressure 1.37Mpa, the pressure gauge 10 on the device is seen in pressurize 3 minutes, and it is qualified not rise to.Return pressure in the combined type pressure governor is qualified at this moment, the sealing surface of part meets the requirements, if the reading of pressure gauge 10 continues to rise, illustrate that return-flow system is not all right, must change big or small diaphragm, debugging maybe must be changed the sealing surface of polytetrafluoroethylene, perhaps uses the surface impurity of alcohol wash size diaphragm and polytetrafluoroethylene, test again is until qualified.After the test passes, reset the working pressure of combined type pressure governor 13, simultaneously, on the pressure governor checking apparatus, test until meeting the requirements fully getting final product according to a conventional method.
Claims (2)
1. the calibration apparatus of the combined pressure-regulating valve of a low temperature cylinder, it is characterized in that comprising pressure regulating type low temperature source of the gas, 3 Low-temperature pressure tables, 1 low-temperature (low temperature) vessel that is enclosed with thermal insulation layer, 1 low-temperature (low temperature) vessel safety valve, 3 cryogenic globe valve, 3 three-way pipes, 1 reflow pipe and by the low temperature cylinder combined pressure-regulating valve of adjustment, the suction port of described low-temperature (low temperature) vessel is connected through the source of the gas delivery valve of connecting tube with pressure regulating type low temperature source of the gas, the low-temperature (low temperature) vessel safety valve is installed on the low-temperature (low temperature) vessel, the air outlet of low-temperature (low temperature) vessel is connected with an end of the 1st cryogenic globe valve, the other end of the 1st cryogenic globe valve is connected with the 1st three-way pipe, the 2nd end of the 1st three-way pipe be connected by the low temperature cylinder combined pressure-regulating valve inlet opening of adjustment, the 3rd end of the 1st three-way pipe is connected with 2 Low-temperature pressure tables through the 2nd cryogenic globe valve, be connected with the 2nd three-way pipe by the low temperature cylinder combined pressure-regulating valve delivery outlet of adjustment, the 2nd end of the 2nd three-way pipe is connected with the 3rd three-way pipe, the 3rd end of the 2nd three-way pipe through reflow pipe be connected by the low temperature cylinder combined pressure-regulating valve refluxing opening of adjustment, the 3rd end of the 3rd three-way pipe is connected with the 3rd Low-temperature pressure table, the 2nd end of the 3rd three-way pipe is connected with the 3rd cryogenic globe valve, and the other end of the 3rd cryogenic globe valve is vacant.
2. the calibration apparatus of the combined pressure-regulating valve of low temperature cylinder as claimed in claim 1, the range that it is characterized in that described 3 Low-temperature pressure tables are for by 1.5～3 times of the low temperature cylinder combined pressure-regulating valve return pressure of adjustment, and precision is equal to or higher than 0.5 grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919429U CN201866528U (en) | 2010-11-04 | 2010-11-04 | Adjustment device for combined pressure-adjusting valve of low-temperature gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919429U CN201866528U (en) | 2010-11-04 | 2010-11-04 | Adjustment device for combined pressure-adjusting valve of low-temperature gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866528U true CN201866528U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205919429U Expired - Fee Related CN201866528U (en) | 2010-11-04 | 2010-11-04 | Adjustment device for combined pressure-adjusting valve of low-temperature gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201866528U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466633A (en) * | 2015-11-18 | 2016-04-06 | 西安航天计量测试研究所 | Pressure sensor calibration device under low temperature |
-
2010
- 2010-11-04 CN CN2010205919429U patent/CN201866528U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466633A (en) * | 2015-11-18 | 2016-04-06 | 西安航天计量测试研究所 | Pressure sensor calibration device under low temperature |
| CN105466633B (en) * | 2015-11-18 | 2018-10-16 | 西安航天计量测试研究所 | A kind of low temperature lower pressure sensor calibrating installation |
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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: 20150515 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150515 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: 20110615 Termination date: 20151104 |
|
| EXPY | Termination of patent right or utility model |