CN203259220U - Child-mother capacitive sensor of outer ring structure - Google Patents
Child-mother capacitive sensor of outer ring structure Download PDFInfo
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- CN203259220U CN203259220U CN 201320196887 CN201320196887U CN203259220U CN 203259220 U CN203259220 U CN 203259220U CN 201320196887 CN201320196887 CN 201320196887 CN 201320196887 U CN201320196887 U CN 201320196887U CN 203259220 U CN203259220 U CN 203259220U
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- outer tube
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Abstract
The utility model discloses a child-mother capacitive sensor of an outer ring structure capable of being applied for a liquid level meter. The child-mother capacitive sensor of the outer ring structure comprises a main capacitive sensor, wherein the main capacitive sensor substantially comprises an outer pipe and an inner pipe, the two ends of the inner pipe are respectively connected in the outer pipe through main insulation support blocks in an insulation supported mode, and the outer pipe and the inner pipe are respectively provided with at least a through hole, and are used as two electrodes of the main capacitive sensor. The child-mother capacitive sensor of the outer ring structure is further provided with a sub capacitive sensor, wherein an outer casing is further sleeved outside the outer pipe, at least an outer through hole is arranged on the outer casing, the length of the outer casing is not more than three fourths of the length of the outer pipe, and the outer pipe and the outer casing are used as two electrodes of the sub capacitive sensor. The child-mother capacitive sensor of the outer ring structure can improve measuring accuracy of the liquid level meter for detecting the level of a liquefied natural gas by using the child-mother capacitive sensor, and reduces measuring error.
Description
Technical field
The utility model relates to detecting the Level meter of liquefied natural gas (LNG) liquid level in the basin, refers more particularly to the capacitance type sensor in the Level meter.
Background technology
Liquefied natural gas (LNG) is more and more extensive as its application of a kind of clean energy resource, liquefies, stores, transports and load in the container of liquefied natural gas (LNG) being used for, and usually all disposes the liquid level that Level meter detected and showed liquefied natural gas (LNG).The structure of Level meter commonly used comprises at present: be installed on the sensor device in the basin inner chamber, and sensor device outer signal processor, signal processor is connected with fluid level gauge; Used sensor device is a capacitance type sensor single, that be used for detecting LNG liquid level in the basin at present.Capacitance type sensor is one of core component of Level meter, it is installed in the basin inner chamber that loads liquefied natural gas (LNG), behind can liquefied natural gas (LNG) in the basin, also can pour into liquefied natural gas (LNG) in the capacitance type sensor, and the electric capacity of capacitance type sensor can linearity increase along with the rising of liquefied natural gas (LNG) liquid level; Utilize the above-mentioned characteristic of capacitance type sensor, signal processor in the Level meter is by the electric capacity of Detection capacitance formula sensor, and with real-time level signal of output after the capacitance value conversion process to the fluid level gauge of signal processor cooperating, show in real time the liquid level of liquefied natural gas (LNG) in the basin.
The structure of capacitance type sensor commonly used is at present: comprise outer tube and inner tube as detecting electrode, the two ends of inner tube are connected in the outer tube by the dielectric support block insulating supporting respectively, dielectric support block is coated with the end cap seat that welds mutually with outer tube outward, outer tube is electrically connected with the metal screen layer of drawing wire, and the battery lead plate in the inner tube is electrically connected with the metal core wire of drawing wire; On outer tube and inner tube, also be provided with the through hole for the turnover of liquefaction rock gas.
There are following shortcoming in the Level meter of said structure and the capacitance type sensor that adopts: the quality of liquefied natural gas (LNG) can be variant because of the difference of the factors such as the place of production, wherein, the difference of the specific inductive capacity of the liquefied natural gas (LNG) of different qualities having the greatest impact to the capacitance type sensor electric capacity.For certain basin of determining, its Level meter that disposes is just tested before formally coming into operation, the liquefied natural gas (LNG) that in debug process, usually can only select certain to determine---be assumed to be liquefied natural gas (LNG) D, so, in actual use, the specific inductive capacity of the specific inductive capacity of the liquefied natural gas (LNG) of institute's can and liquefied natural gas (LNG) D is more approaching in the basin, Level meter is just got over close to the actual liquid level in the basin by the detected liquid level of capacitance type sensor, and namely its testing result is just more accurate; When the specific inductive capacity of the specific inductive capacity of the liquefied natural gas (LNG) of institute's can in the basin and liquefied natural gas (LNG) D departs from when too much, the Level meter that adopts above-mentioned capacitance type sensor just can't be judged actual liquid level in the basin exactly according to the electric capacity of sensor, also just can't detect exactly the liquid level of liquefied natural gas (LNG) in the basin, bring inconvenience will for normal can, transportation and the use of basin.
The utility model content
The purpose of this utility model provides a kind of primary and secondary capacitance type sensor that can make the outer ring structure that Level meter detects liquefied natural gas (LNG) liquid level in the basin exactly.
For achieving the above object, the utility model has adopted following technical scheme.
The primary and secondary capacitance type sensor of outer ring structure, comprise main capacitance formula sensor, the structure of main capacitance formula sensor comprises: outer tube and the inner tube that is arranged in outer tube, the two ends of inner tube are connected in the outer tube by major insulation back-up block insulating supporting respectively, be respectively arranged with at least one for the through hole of liquefaction rock gas turnover at outer tube and inner tube, main metal screen layer of drawing wire is electrically connected with outer tube, main metal core wire of drawing wire is electrically connected with inner tube, makes outer tube and inner tube as two electrodes of main capacitance formula sensor; Be characterized in: also be provided with a sub-capacitance type sensor, the structure of sub-capacitance type sensor comprises: also be set with an outer tube in the outside of outer tube, the two ends of outer tube are connected on the outer tube by insulating sublayer back-up block insulating supporting respectively, be provided with at least one on the outer tube for the accessibke porosity of liquefaction rock gas turnover, the length of outer tube is no more than 3/4ths of outer length of tube, the metal screen layer that son is drawn wire is electrically connected with outer tube, the metal core wire that son is drawn wire is electrically connected with outer tube, makes outer tube and outer tube as two electrodes of sub-capacitance type sensor.
Further, the primary and secondary capacitance type sensor of aforesaid outer ring structure, wherein, the length of outer tube is no more than 1/2nd of outer length of tube.
Further, the primary and secondary capacitance type sensor of aforesaid outer ring structure, wherein, the length of outer tube is no more than 1/3rd of outer length of tube.
Further, the primary and secondary capacitance type sensor of aforesaid outer ring structure wherein, is coated with the end cap seat that welds mutually with outer tube outside the major insulation back-up block.
Further, the primary and secondary capacitance type sensor of aforesaid outer ring structure wherein, is welded with battery lead plate in inner tube, and main metal core wire of drawing wire is electrically connected with battery lead plate by screw.
The beneficial effects of the utility model: when reality is used, the fully loaded electric capacity CD the when signal processor in the Level meter is stored first sub-capacitance type sensor and filled liquefied natural gas (LNG) D; When each can is used, signal processor collection and the fully loaded electric capacity CA when storing sub-capacitance type sensor and being filled other liquefied natural gas (LNG), and electric capacity CA and CD made comparisons, obtain reacting the value t of electric capacitance change ratio, signal processor recycling t goes to adjust the electric capacity of main capacitance formula sensor, thereby can improve the measuring accuracy of liquid level, greatly reduce measuring error.Perhaps, can guarantee at first to be full of when utilizing the each can LNG of sub-capacitance type sensor, thereby calculate the specific inductive capacity of the liquefied natural gas (LNG) of each can, thereby the fully loaded electric capacity in the time of can calculating exactly in advance each actual use of main capacitance formula sensor, can improve measuring accuracy equally, reduce measuring error.
Description of drawings
Fig. 1 is the structural representation of the primary and secondary capacitance type sensor of outer ring structure described in the utility model.
Embodiment
Be further described below in conjunction with accompanying drawing and the preferred embodiment primary and secondary capacitance type sensor to outer ring structure described in the utility model.
Referring to shown in Figure 1, the primary and secondary capacitance type sensor of outer ring structure described in the utility model, comprise main capacitance formula sensor, the structure of main capacitance formula sensor comprises: outer tube 1 and the inner tube 2 that is arranged in outer tube 1, the two ends of inner tube 2 are connected in the outer tube 1 by major insulation back-up block 3 and 31 insulating supportings respectively, outside major insulation back-up block 3, be coated with the end cap seat 4 that welds mutually with outer tube 1, outside major insulation back-up block 31, be coated with the end cap seat 41 that welds mutually with outer tube 1, by end cap seat 4 and 41 are set, can protect major insulation back-up block 3 and 31 on the one hand, major insulation back-up block 3 and 31 is connected between outer tube 1 and the inner tube 2 more reliably; Two-end part at outer tube 1 is respectively arranged with at least one for the through hole 11 of liquefaction rock gas turnover, two-end part in inner tube 2 is respectively arranged with at least one for the through hole 21 of liquefaction rock gas turnover, main metal screen layer 7 of drawing wire 6 is electrically connected with outer tube 1, main metal core wire 61 of drawing wire 6 is electrically connected with inner tube 2---in inner tube 2, be welded with battery lead plate 5 in the present embodiment, main metal core wire 61 and insulation course thereof of drawing wire 6 passes the taper plug together successively, behind end cap seat 4 and the major insulation back-up block 3, metal core wire 61 is electrically connected with battery lead plate 5 by screw 10, thereby guarantee metal core wire 61 and 5 reliable and stable connections of battery lead plate, make outer tube 1 and inner tube 2 as two electrodes of main capacitance formula sensor; The conductor vibration that the taper plug can cause the external world intercepts outside electric connection point, effectively prevents the fracture of electric connection point sealing-off.Also be provided with a sub-capacitance type sensor, the structure of sub-capacitance type sensor comprises: also be set with an outer tube 8 in the outside of outer tube 1, the two ends of outer tube 8 are connected on the outer tube 1 by insulating sublayer back-up block 32 and 33 insulating supportings respectively, be provided with at least one on the outer tube 8 for the accessibke porosity 81 of liquefaction rock gas turnover, the length of outer tube 8 is no more than 3/4ths of outer tube 1 length, the length that is preferably outer tube 8 is no more than 1/2nd of outer tube 1 length, more preferably the length of outer tube 8 is no more than 1/3rd of outer tube 1 length, to guarantee that when the can liquefied natural gas (LNG) in basin, sub-capacitance type sensor can be filled and be full of first liquefied natural gas (LNG) than main capacitance formula sensor.The metal screen layer 71 that son is drawn wire 62 is electrically connected with outer tube 1, and the metal core wire 63 that son is drawn wire 62 is electrically connected with outer tube 8, makes outer tube 1 and outer tube 8 as two electrodes of sub-capacitance type sensor.
When reality is used, the primary and secondary capacitance type sensor of outer ring structure described in the utility model is installed in the basin, and make outer tube 8 be positioned at tank bottom, can guarantee that so sub-capacitance type sensor can be filled and fill first liquefied natural gas (LNG) than main capacitance formula sensor all the time when each can.Fully loaded electric capacity CD when the signal processor in the Level meter is stored first sub-capacitance type sensor and filled liquefied natural gas (LNG) D; When each can is used, signal processor collection and the fully loaded electric capacity CA when storing sub-capacitance type sensor and being filled other liquefied natural gas (LNG), and electric capacity CA and CD made comparisons, obtain reacting the value t of electric capacitance change ratio, signal processor recycling t goes to adjust the electric capacity of main capacitance formula sensor, thereby can improve the measuring accuracy of liquid level, greatly reduce measuring error.Perhaps, can guarantee at first to be full of when utilizing the each can LNG of sub-capacitance type sensor, thereby calculate the specific inductive capacity of the liquefied natural gas (LNG) of each can, thereby the fully loaded electric capacity in the time of can calculating exactly in advance each actual use of main capacitance formula sensor, can improve measuring accuracy equally, reduce measuring error.
Claims (5)
1. the primary and secondary capacitance type sensor of outer ring structure, comprise main capacitance formula sensor, the structure of main capacitance formula sensor comprises: outer tube and the inner tube that is arranged in outer tube, the two ends of inner tube are connected in the outer tube by major insulation back-up block insulating supporting respectively, be respectively arranged with at least one for the through hole of liquefaction rock gas turnover at outer tube and inner tube, main metal screen layer of drawing wire is electrically connected with outer tube, main metal core wire of drawing wire is electrically connected with inner tube, makes outer tube and inner tube as two electrodes of main capacitance formula sensor; It is characterized in that: also be provided with a sub-capacitance type sensor, the structure of sub-capacitance type sensor comprises: also be set with an outer tube in the outside of outer tube, the two ends of outer tube are connected on the outer tube by insulating sublayer back-up block insulating supporting respectively, be provided with at least one on the outer tube for the accessibke porosity of liquefaction rock gas turnover, the length of outer tube is no more than 3/4ths of outer length of tube, the metal screen layer that son is drawn wire is electrically connected with outer tube, the metal core wire that son is drawn wire is electrically connected with outer tube, makes outer tube and outer tube as two electrodes of sub-capacitance type sensor.
2. the primary and secondary capacitance type sensor of outer ring structure according to claim 1, it is characterized in that: the length of outer tube is no more than 1/2nd of outer length of tube.
3. the primary and secondary capacitance type sensor of outer ring structure according to claim 2, it is characterized in that: the length of outer tube is no more than 1/3rd of outer length of tube.
4. it is characterized in that: outside the major insulation back-up block, be coated with the end cap seat that welds mutually with outer tube according to claim 1 and 2 or the primary and secondary capacitance type sensor of 3 described outer ring structures.
5. according to claim 1 and 2 or the primary and secondary capacitance type sensor of 3 described outer ring structures, it is characterized in that: be welded with battery lead plate in inner tube, main metal core wire of drawing wire is electrically connected with battery lead plate by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196887 CN203259220U (en) | 2013-04-18 | 2013-04-18 | Child-mother capacitive sensor of outer ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196887 CN203259220U (en) | 2013-04-18 | 2013-04-18 | Child-mother capacitive sensor of outer ring structure |
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| Publication Number | Publication Date |
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| CN203259220U true CN203259220U (en) | 2013-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 201320196887 Withdrawn - After Issue CN203259220U (en) | 2013-04-18 | 2013-04-18 | Child-mother capacitive sensor of outer ring structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217201A (en) * | 2013-04-18 | 2013-07-24 | 苏州赛智达智能科技有限公司 | Primary-secondary capacitive sensor for outer ring structure |
| CN104568055A (en) * | 2015-02-03 | 2015-04-29 | 上海雷尼威尔技术有限公司 | Installing structure of electric capacity type liquidometer |
| CN105387909A (en) * | 2015-11-01 | 2016-03-09 | 四川泛华航空仪表电器有限公司 | Voltage output type oil quantity transducer |
| CN110686753A (en) * | 2019-10-25 | 2020-01-14 | 德阳市新泰自动化仪表有限公司 | Liquid level measuring sensor and liquid level meter |
-
2013
- 2013-04-18 CN CN 201320196887 patent/CN203259220U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217201A (en) * | 2013-04-18 | 2013-07-24 | 苏州赛智达智能科技有限公司 | Primary-secondary capacitive sensor for outer ring structure |
| CN103217201B (en) * | 2013-04-18 | 2015-11-25 | 苏州赛智达智能科技有限公司 | The primary and secondary capacitance type sensor of outer ring structure |
| CN104568055A (en) * | 2015-02-03 | 2015-04-29 | 上海雷尼威尔技术有限公司 | Installing structure of electric capacity type liquidometer |
| CN105387909A (en) * | 2015-11-01 | 2016-03-09 | 四川泛华航空仪表电器有限公司 | Voltage output type oil quantity transducer |
| CN105387909B (en) * | 2015-11-01 | 2018-10-02 | 四川泛华航空仪表电器有限公司 | Voltage output mode fuel-quantity transducer |
| CN110686753A (en) * | 2019-10-25 | 2020-01-14 | 德阳市新泰自动化仪表有限公司 | Liquid level measuring sensor and liquid level meter |
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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: ZHANGJIAGANG HUADI MACHINERY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: SUZHOU SAIZHIDA INTELLIGENT TECHNOLOGY CO., LTD. Effective date: 20140411 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215634 SUZHOU, JIANGSU PROVINCE TO: 215633 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140411 Address after: Suzhou City, Jiangsu province 215633 Zhangjiagang City gold town CHENFENG road Huadi Machinery Equipment Co Ltd Patentee after: Zhangjiagang Huadi Machinery Equipment Co., Ltd. Address before: Suzhou City, Jiangsu Province, Zhangjiagang free trade zone 215634 emerging industry incubation center building A room 419A Suzhou Saizhi of intelligent science and Technology Co Ltd Patentee before: Suzhou Saizhida Intelligent Science & Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: SUZHOU SAIZHIDA INTELLIGENT TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHANGJIAGANG HUADI MACHINERY EQUIPMENT CO., LTD. Effective date: 20150716 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150716 Address after: 215634 building A, building 419A, emerging industry incubation center, Zhangjiagang Free Trade Zone, Jiangsu Patentee after: Suzhou Saizhida Intelligent Science & Technology Co., Ltd. Address before: Suzhou City, Jiangsu province 215633 Zhangjiagang City gold town CHENFENG road Huadi Machinery Equipment Co Ltd Patentee before: Zhangjiagang Huadi Machinery Equipment Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131030 Effective date of abandoning: 20151125 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |