CN203615978U - Novel low-temperature Coriolis mass flowmeter - Google Patents
Novel low-temperature Coriolis mass flowmeter Download PDFInfo
- Publication number
- CN203615978U CN203615978U CN201320727417.9U CN201320727417U CN203615978U CN 203615978 U CN203615978 U CN 203615978U CN 201320727417 U CN201320727417 U CN 201320727417U CN 203615978 U CN203615978 U CN 203615978U
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- Prior art keywords
- measuring tube
- cold insulation
- pipe
- inlet end
- tube
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Abstract
The utility model discloses a novel low-temperature Coriolis mass flowmeter, which comprises a U-shaped cold-insulating pipe 1, wherein the cold-insulating pipe 1 is of a hollow structure with two closed ends, a U-shaped measuring pipe 2 is arranged in the cold-insulating pipe 1, the inlet end 2a and the outlet end 2b of the measuring pipe 2 respectively extend out of both ends of the cold-insulating pipe 1, an oscillation-starting coil 3 is sleeved at the middle part of the measuring pipe 2, an inlet detecting coil 4 and an outlet detecting coil 5 are respectively sleeved onto the two bending segments of the measuring pipe 2, cooling pipes 6 are also arranged in the inner cavity of the cold-insulating pipe 1, the cooling pipes 6 are arranged side by side at the outer side of the measuring pipe 2, and the inlet end and the outlet end of each cooling pipe 6 respectively extend out of the cold-insulating pipe 1. According to the novel low-temperature Coriolis mass flowmeter, the cooling pipes are added into the cold-insulating pipe, so that the temperature of liquid in the measuring pipe in the metering process is effectively kept; meanwhile, the novel low-temperature Coriolis mass flowmeter also has the characteristics of low manufacturing difficulty, convenience in installation, high cyclic utilization rate and the like.
Description
Technical field
The utility model relates to a kind of measurer, particularly relates to a kind of for the coriolis mass flowmeters under low temperature.
Background technology
Coriolis mass flowmeters is a kind of novel instrument of directly and critically measuring fluid mass flow, its invention is the result that scientific and technological circle earnestly seek decades, it not only has accuracy, repeatability, stability, and in fluid passage, there is no choked flow element and a movable member, thereby its good reliability, long service life, can also measure the flow of high viscosity fluid and gases at high pressure.The metering of the liquefied natural gas (LNG) that automobile is used is now surveyed accurate by it, in " U " shape pipe that current coriolis mass flowmeters main body of measuring on the market liquefied natural gas (LNG) adopts, conventionally only has a measuring tube, the temperature of measuring tube just relies on the cold insulation chamber between its outer wall and cold insulation inside pipe wall to maintain, this structure is in the time measuring liquefied natural gas (LNG), because the temperature of liquefied natural gas (LNG) is very low, conventionally be all subzero more than 100 degree, the temperature that only relies on cold insulation chamber to maintain the interior mobile liquefied natural gas (LNG) of measuring tube is inadequate.
Utility model content
Technical problem to be solved in the utility model is to provide the coriolis mass flowmeters of temperature in a kind of better maintenance measuring tube.
The technical solution of the utility model is as follows: a kind of new type low temperature coriolis mass flowmeters, comprise cold insulation pipe (1), the hollow structure that this cold insulation pipe (1) is closed at both ends, in this cold insulation pipe (1), be provided with measuring tube (2), the inlet end (2a) of described measuring tube (2) and endpiece (2b) stretch out respectively outside cold insulation pipe (1) two ends, the middle part of this measuring tube (2) is set with starting of oscillation coil (3), inlet end (2a) inner side and endpiece (2b) inner side of this measuring tube (2) are respectively installed with entrance magnetic test coil (4) and outlet magnetic test coil (5), and this entrance magnetic test coil (4) and outlet magnetic test coil (5) are all positioned at cold insulation pipe (1), it is characterized in that: in described cold insulation pipe (1) inner chamber, be also provided with cooling tube (6), this cooling tube (6) is double tubular, between the two-layer barrel of this cooling tube (6), be perfused with cooling liquid, described measuring tube (2) passes in cooling tube (6) center pit, inlet end (2a) endpiece (2b) of this measuring tube (2) stretches out from inlet end and the endpiece of cooling tube (6) respectively, between described measuring tube (2) outer wall and cooling tube (6) inwall, form separate cavities (6a), described starting of oscillation coil (3), entrance magnetic test coil (4) and outlet magnetic test coil (5) are all positioned at separate cavities (6a).And the inlet end of this cooling tube (6) and endpiece stretch out respectively outside cold insulation pipe (1).
Adopt the coriolis mass flowmeters of said structure, owing to having added the cooling tube of double tubular in cold insulation pipe, in between the double-deck barrel of this cooling tube, can pass into cryogenic liquid, be used for keeping the intraluminal low-temperature condition of cold insulation, cooling tube has kept measuring the temperature of liquid in pipe to greatest extent, and outside cold insulation pipe has kept the temperature of the cooling liquid in cooling tube, finally reach the object that keeps fluid temperature in measuring tube.
For cost-saving, easy to use, the inlet end of described cooling tube (6) communicates with the inlet end of measuring tube (2), can in measuring tube and cooling tube, pass into the liquid communicating, can reach the object that keeps temperature, also saved cost, cooling tube liquid out can also enter circulation and rejoin in cooling tube and measuring tube.
In order to make the signal of generation larger, described cold insulation pipe (1), measuring tube (2) and cooling tube (6) are " U " type, starting of oscillation coil (3) is sleeved on the middle part of measuring tube (2), and entrance magnetic test coil (4) and outlet magnetic test coil (5) are set on the bending section of measuring tube (2).Because the bend pipe natural frequency of vibration is lower, can adopt thicker tube wall, instrument is wear-resisting, decay resistance is better.
Beneficial effect: the utility model has added cooling tube in cold insulation pipe, has kept measuring in metering process the temperature of liquid in pipe effectively, also has that manufacture difficulty is low, simple installation simultaneously, cyclic utilization rate high.
Accompanying drawing explanation
Fig. 1 is cut-open view of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 1, the utility model comprises cold insulation pipe 1, measuring tube 2, starting of oscillation coil 3, entrance magnetic test coil 4, the parts such as outlet magnetic test coil 5 and cooling tube 6, described cold insulation pipe 1 is preferably " U " shape, the hollow structure that this cold insulation pipe 1 is closed at both ends, in this cold insulation pipe 1, be provided with the measuring tube 2 of " U " shape, the inlet end 2a of described measuring tube 2 and endpiece 2b stretch out respectively outside cold insulation pipe 1 two ends, the middle part of this measuring tube 2 is set with starting of oscillation coil 3, on two sections of bending sections of this measuring tube 2, be respectively installed with entrance magnetic test coil 4 and outlet magnetic test coil 5, in described cold insulation pipe 1 inner chamber, be also provided with cooling tube 6, described cooling tube 6 is tubular, the inlet end of this cooling tube 6 and endpiece stretch out respectively outside cold insulation pipe 1, the inlet end of this cooling tube 6 communicates with the inlet end of measuring tube 2, described measuring tube 2 is arranged side by side in the center pit of cooling tube 6, the endpiece 2b of this measuring tube 2 stretches out from the endpiece of cooling tube 6, between described measuring tube 2 outer walls and cooling tube 6 inwalls, form separate cavities 6a, described starting of oscillation coil 3, entrance magnetic test coil 4 and outlet magnetic test coil 5 are all positioned at separate cavities 6a.
The foregoing is only preferred embodiment of the present utility model; not take the utility model as restriction; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improve as to change cold insulation pipe be straight tube etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a new type low temperature coriolis mass flowmeters, comprise cold insulation pipe (1), the hollow structure that this cold insulation pipe (1) is closed at both ends, in this cold insulation pipe (1), be provided with measuring tube (2), the inlet end (2a) of described measuring tube (2) and endpiece (2b) stretch out respectively outside cold insulation pipe (1) two ends, the middle part of this measuring tube (2) is set with starting of oscillation coil (3), inlet end (2a) inner side and endpiece (2b) inner side of this measuring tube (2) are respectively installed with entrance magnetic test coil (4) and outlet magnetic test coil (5), and this entrance magnetic test coil (4) and outlet magnetic test coil (5) are all positioned at cold insulation pipe (1), it is characterized in that: in described cold insulation pipe (1) inner chamber, be also provided with cooling tube (6), this cooling tube (6) is double tubular, between the two-layer barrel of this cooling tube (6), be perfused with cooling liquid, described measuring tube (2) passes in cooling tube (6) center pit, inlet end (2a) endpiece (2b) of this measuring tube (2) stretches out from inlet end and the endpiece of cooling tube (6) respectively, between described measuring tube (2) outer wall and cooling tube (6) inwall, form separate cavities (6a), described starting of oscillation coil (3), entrance magnetic test coil (4) and outlet magnetic test coil (5) are all positioned at separate cavities (6a), and the inlet end of this cooling tube (6) and endpiece stretch out respectively outside cold insulation pipe (1).
2. new type low temperature coriolis mass flowmeters according to claim 1, is characterized in that: the inlet end of described cooling tube (6) communicates with the inlet end of measuring tube (2).
3. new type low temperature coriolis mass flowmeters according to claim 2, it is characterized in that: described cold insulation pipe (1), measuring tube (2) and cooling tube (6) are " U " type, starting of oscillation coil (3) is sleeved on the middle part of measuring tube (2), and entrance magnetic test coil (4) and outlet magnetic test coil (5) are set on the bending section of measuring tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727417.9U CN203615978U (en) | 2013-11-18 | 2013-11-18 | Novel low-temperature Coriolis mass flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727417.9U CN203615978U (en) | 2013-11-18 | 2013-11-18 | Novel low-temperature Coriolis mass flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615978U true CN203615978U (en) | 2014-05-28 |
Family
ID=50768612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320727417.9U Withdrawn - After Issue CN203615978U (en) | 2013-11-18 | 2013-11-18 | Novel low-temperature Coriolis mass flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203615978U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575348A (en) * | 2013-11-18 | 2014-02-12 | 重庆耐德能源装备集成有限公司 | Novel low-temperature Coriolis mass flow meter |
| CN104864926A (en) * | 2015-03-03 | 2015-08-26 | 东京计装（上海）仪表有限公司 | Heat sink body and coriolis flowmeter thereof |
-
2013
- 2013-11-18 CN CN201320727417.9U patent/CN203615978U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575348A (en) * | 2013-11-18 | 2014-02-12 | 重庆耐德能源装备集成有限公司 | Novel low-temperature Coriolis mass flow meter |
| CN103575348B (en) * | 2013-11-18 | 2017-04-05 | 重庆耐德能源装备集成有限公司 | A kind of new type low temperature coriolis mass flowmeters |
| CN104864926A (en) * | 2015-03-03 | 2015-08-26 | 东京计装（上海）仪表有限公司 | Heat sink body and coriolis flowmeter thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140528 Effective date of abandoning: 20170405 |