CN201866526U - Wet adjusting device of liquid level meter for low-temperature gas cylinders - Google Patents
Wet adjusting device of liquid level meter for low-temperature gas cylinders Download PDFInfo
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- CN201866526U CN201866526U CN2010205919344U CN201020591934U CN201866526U CN 201866526 U CN201866526 U CN 201866526U CN 2010205919344 U CN2010205919344 U CN 2010205919344U CN 201020591934 U CN201020591934 U CN 201020591934U CN 201866526 U CN201866526 U CN 201866526U
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Abstract
The utility model discloses a wet adjusting device of a liquid level meter for low-temperature gas cylinders, which structurally comprises a cylindrical upright low-temperature gas cylinder, a low-temperature liquefied gas source, a liquid inlet pipe, a low-temperature flow meter, a low-temperature liquid inlet valve, a low-temperature liquid drain valve, a liquid drain pipe and a low-temperature container. When the wet adjusting device is used, after a liquid level meter to be tested and a liquid level meter head thereof are mounted in a liquid level meter mounting screw hole of the cylindrical upright low-temperature gas cylinder by a liquid level meter fixing swivel nut, low-temperature media matching with the liquid level meter and the meter head thereof are filled, and an operator measures and calculates the weight and the volume according to the flow meter and observes and records meter numbers of an upper error range and a lower error range of the liquid level meter head, and then a meter head pointer can be adjusted to a correct position by the aid of a dry adjusting device. The wet adjusting device has the advantages of reasonable structural design, convenience in use, high adjustment precision and the like, and is particularly suitable for special equipment safety monitor and inspection departments.
Description
Technical field
The utility model relates to a kind of debugging apparatus to level meter, particularly a kind of debugging apparatus of low temperature cylinder level meter, belongs to the level meter field.
Background technique
Cryogenic insulated cylinder (being commonly called as low temperature cylinder, Dewar vessel) but be a kind of portable extraordinary gas cylinder of repeated charging, be mainly used in cryogenic liquides such as storing liquid nitrogen, liquid oxygen, liquid argon, LNG Liquefied natural gas.In order to ensure the safety of cryogenic insulated cylinder, must strictness prevent the liquid gas overfilling, otherwise explosion hazard is very big.In the low temperature cylinder explosive accident, overfilling causes the ratio of low temperature cylinder physical property blast very big, these low temperature cylinders mostly remain static before blast, be not impacted and shake, mainly be to be subjected to Temperature Influence, superpressure in the bottle, expire the bottle back interior liquid gas of bottle along with temperature raises, its volumetric expansion, then, expand and promptly transfer compression to, because the compressibility of liquid is very little, so force value is directly proportional with the expansion coefficient of splendid attire medium, is inversely proportional to compressibility coefficient, just because of the compressibility coefficient of liquid is very little, and expansion coefficient is relatively big, and (differing 2 orders of magnitude) is so the rising of low temperature cylinder internal pressure is very surprising, so the level meter on the low temperature cylinder is controlled the filling weight size to operator, be a good supervisory device.
The level meter of on low temperature cylinder, installing and using, the long float rod type level meter of main use, the fly rod diameter has φ 8, φ 10, φ 12 etc., length has plurality of specifications such as 1200,1400,1500, and gauge outfit also will have nothing in common with each other according to the proportion of media such as liquid nitrogen, liquid oxygen, liquid argon, LNG Liquefied natural gas is different.Level meter at above-mentioned multiple different size, in to the low temperature cylinder third pary certification, also must check the different level meter of various structures on the low temperature cylinder, for the spring on the level meter, fly rod and gauge outfit carry out the inspection and maintenance adjustment time can on the dry type debugging apparatus of low temperature cylinder level meter, carry out.But for the meter pointer scale during inaccurate or customer requirements, after just level meter need being debugged with the wet type debugging apparatus earlier again with the correction of dry type debugging apparatus.
Summary of the invention
The purpose of this utility model is to design a kind of rational in infrastructurely for supervision and inspection on safety department, and easy to use and testing precision height can be determined the wet type calibration apparatus of the low temperature cylinder level meter of meter pointer scale.
The wet type calibration apparatus of low temperature cylinder level meter of the present utility model, its structure comprises cylindrical vertical low temperature cylinder, low-temperature liquefaction source of the gas, liquid inlet pipe, low temperature flowmeter, low temperature feed liquor valve, low temperature liquid discharging valve, liquid-discharging tube and low-temperature (low temperature) vessel, described low-temperature liquefaction source of the gas is connected with the liquid entering hole of cylindrical vertical low temperature cylinder through liquid inlet pipe, low temperature flowmeter and low temperature feed liquor valve successively, and the liquid port of cylindrical vertical low temperature cylinder is connected with low-temperature (low temperature) vessel with liquid-discharging tube through the low temperature liquid discharging valve successively.Described cylindrical vertical low-temperature (low temperature) vessel height should be not less than the height of the low temperature cylinder of third pary certification, and the low temperature flowmeter is selected the low temperature flowmeter that is not less than 0.5 grade for use.
The wet type calibration apparatus of low temperature cylinder level meter of the present utility model has reasonable in design, and easy to use and testing precision advantages of higher is particularly suitable for special equipment supervision and inspection on safety department equipment and uses.
Description of drawings
Accompanying drawing 1 is a kind of structural representation among the utility model embodiment.
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 1, the wet type calibration apparatus of low temperature cylinder level meter of the present utility model, its structure comprises cylindrical vertical low temperature cylinder 6, low-temperature liquefaction source of the gas, liquid inlet pipe 1, low temperature flowmeter 2, low temperature feed liquor valve 3, low temperature liquid discharging valve 4, liquid-discharging tube 5 and low-temperature (low temperature) vessel, described low-temperature liquefaction source of the gas is connected with the liquid entering hole of cylindrical vertical low temperature cylinder 6 through liquid inlet pipe 1, low temperature flowmeter 2 and low temperature feed liquor valve 3 successively, and the liquid port of cylindrical vertical low temperature cylinder 6 is connected with low-temperature (low temperature) vessel with liquid-discharging tube 5 through low temperature liquid discharging valve 4 successively.Treat liquid level meter for the ease of installation, described cylindrical vertical low-temperature (low temperature) vessel 6 height should be not less than the height of the low temperature cylinder of third pary certification, preferably select the height cylindrical vertical low-temperature (low temperature) vessel identical with capacity with the low temperature cylinder of third pary certification for use.Described low temperature flowmeter 2 should be selected the low temperature flowmeter that is not less than 0.5 grade for use.
During operation, earlier the low-temperature liquefaction source of the gas (is not drawn among the figure, this source of the gas is selected for use with liquid level and is taken into account the cryogenic media that gauge outfit is complementary) liquid outlet and liquid inlet pipe 1 connect, the liquid entering hole of liquid-discharging tube 5 and low-temperature (low temperature) vessel (drawing among the figure) is connected, and closes low temperature feed liquor valve 3 and low temperature liquid discharging valve 4.To treat that again liquid level meter 7 and level meter gauge outfit 8 thereof are through level meter after fixedly swivel nut 9 level meter that is installed in cylindrical vertical low temperature cylinder 6 is installed screw, slowly open low temperature feed liquor valve 3, the medium that flowmeter 2 controls of employing standard charge into, calculate gravimetry and volume, observe on the pointer of level meter gauge outfit 8, the lattice number of following margin of error, after noting, close low temperature feed liquor valve 3, open low temperature liquid discharging valve 4, with the medium in the cylindrical vertical low temperature cylinder 6 after low temperature liquid discharging valve 4 and liquid-discharging tube 5 are discharged to low-temperature (low temperature) vessel, unscrew level meter fixing bolt 9, take out level meter, after treating its normal temperature state that reaches regulation, hang again on the dry type calibration apparatus of level meter, unscrew the adjustment screw between spring and fly rod, on the meter pointer of noting, under the lattice number, adjustment puts in or pulls out to fly rod, the meter pointer accurate location that is adjusted to regulation is tightened and is adjusted the precision that screw can make it to reach regulation.
Claims (2)
1. the wet type calibration apparatus of a low temperature cylinder level meter, it is characterized in that comprising cylindrical vertical low temperature cylinder, low-temperature liquefaction source of the gas, liquid inlet pipe, low temperature flowmeter, low temperature feed liquor valve, low temperature liquid discharging valve, liquid-discharging tube and low-temperature (low temperature) vessel, described low-temperature liquefaction source of the gas is connected with the liquid entering hole of cylindrical vertical low temperature cylinder through liquid inlet pipe, low temperature flowmeter and low temperature feed liquor valve successively, and the liquid port of cylindrical vertical low temperature cylinder is connected with low-temperature (low temperature) vessel with liquid-discharging tube through the low temperature liquid discharging valve successively.
2. the wet type calibration apparatus of low temperature cylinder level meter as claimed in claim 1 is characterized in that described cylindrical vertical low-temperature (low temperature) vessel height should be not less than the height of the low temperature cylinder of third pary certification, and the low temperature flowmeter is selected the low temperature flowmeter that is not less than 0.5 grade for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919344U CN201866526U (en) | 2010-11-04 | 2010-11-04 | Wet adjusting device of liquid level meter for low-temperature gas cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205919344U CN201866526U (en) | 2010-11-04 | 2010-11-04 | Wet adjusting device of liquid level meter for low-temperature gas cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866526U true CN201866526U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205919344U Expired - Fee Related CN201866526U (en) | 2010-11-04 | 2010-11-04 | Wet adjusting device of liquid level meter for low-temperature gas cylinders |
Country Status (1)
| Country | Link |
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| CN (1) | CN201866526U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103863169A (en) * | 2014-03-26 | 2014-06-18 | 赵文杰 | Car liquefied natural gas cylinder detection service van |
| CN104296822A (en) * | 2014-09-29 | 2015-01-21 | 中国科学院电工研究所 | Method and device for measuring liquid level of superconducting power device |
| CN109187220A (en) * | 2018-09-04 | 2019-01-11 | 北京强度环境研究所 | A kind of Rocket tank is without pneumatic die cushion low temperature internal pressure loading method and device |
-
2010
- 2010-11-04 CN CN2010205919344U patent/CN201866526U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103863169A (en) * | 2014-03-26 | 2014-06-18 | 赵文杰 | Car liquefied natural gas cylinder detection service van |
| CN103863169B (en) * | 2014-03-26 | 2016-04-06 | 赵文杰 | Vehicular liquefied natural gas bottle detects servicer |
| CN104296822A (en) * | 2014-09-29 | 2015-01-21 | 中国科学院电工研究所 | Method and device for measuring liquid level of superconducting power device |
| CN109187220A (en) * | 2018-09-04 | 2019-01-11 | 北京强度环境研究所 | A kind of Rocket tank is without pneumatic die cushion low temperature internal pressure loading method and device |
| CN109187220B (en) * | 2018-09-04 | 2021-09-24 | 北京强度环境研究所 | Low-temperature internal pressure loading method and device for airless pillow of rocket storage tank |
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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: 20110615 Termination date: 20151104 |
|
| EXPY | Termination of patent right or utility model |