CN203258368U - Primary-secondary capacitive sensor with inner ring structure - Google Patents
Primary-secondary capacitive sensor with inner ring structure Download PDFInfo
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- CN203258368U CN203258368U CN 201320196886 CN201320196886U CN203258368U CN 203258368 U CN203258368 U CN 203258368U CN 201320196886 CN201320196886 CN 201320196886 CN 201320196886 U CN201320196886 U CN 201320196886U CN 203258368 U CN203258368 U CN 203258368U
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- intervalve
- primary
- capacitive transducer
- outer tube
- inner tube
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Abstract
The utility model discloses a primary-secondary capacitive sensor with an inner ring structure. The primary-secondary capacitive sensor can be applied to liquid level detectors and comprises a primary capacitive sensor and a secondary capacitive sensor, wherein the primary capacitive sensor mainly comprises an outer pipe and a middle pipe with two ends respectively connected in the outer pipe through insulation supporting; at least a through hole is formed in the outer pipe and the middle pipe respectively; the outer pipe and the middle pipe are taken as two detection electrodes of the primary capacitive sensor; an inner pipe is connected in the middle pipe through insulation supporting; at least an inner through hole is formed in the inner pipe; the outer pipe and the inner pipe are taken as two detection electrodes of the secondary capacitive sensor; and the length of the inner pipe does not exceed three quarters of the length of the middle pipe. By using the primary-secondary capacitive sensor, the measurement accuracy of the liquefied natural gas liquid levels detected by the liquid level detectors can be improved, and the measurement errors can be reduced.
Description
Technical field
The utility model relates to detecting the Level meter of LNG Liquefied natural gas liquid level in basin, refers more particularly to the capacitive transducer in Level meter.
Background technique
LNG Liquefied natural gas is more and more extensive as its application of a kind of clean energy resource, in being used for liquefying, store, transport and loading the container of LNG Liquefied natural gas, usually all disposes the liquid level that Level meter detected and showed LNG Liquefied natural gas.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 liquid level indicator; Sensor device used is single a, capacitive transducer that be used for detecting LNG liquid level in basin at present.Capacitive transducer is one of core component of Level meter, it is installed in the basin inner chamber that loads LNG Liquefied natural gas, after can LNG Liquefied natural gas in basin, also can pour into LNG Liquefied natural gas in capacitive transducer, and the Capacity of capacitive transducer can linearity increase along with the rising of LNG Liquefied natural gas liquid level; Utilize the above-mentioned characteristic of capacitive transducer, signal processor in Level meter is by the Capacity of Detection capacitance formula sensor, and with real-time level signal of output after the capacitance value conversion treatment to the liquid level indicator of signal processor cooperating, show in real time the liquid level of LNG Liquefied natural gas in basin.
The structure of capacitive transducer commonly used is at present: comprise outer tube and inner tube as testing electrode, the two ends of inner tube are connected in 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 to the metal screen layer of drawing wire, and the electrode plate in inner tube is electrically connected to the metal core wire of drawing wire; Also be provided with the through hole for the turnover of liquefaction rock gas on outer tube and inner tube.
There are following shortcoming in the Level meter of said structure and the capacitive transducer that adopts: the quality of LNG Liquefied natural gas can be variant because of the difference of the factors such as the place of production, wherein, the difference of the permittivity of the LNG Liquefied natural gas of different qualities having the greatest impact to the capacitive transducer Capacity.For certain basin of determining, its Level meter that configures is just tested before formally coming into operation, usually the LNG Liquefied natural gas that can only select certain to determine in debug process---be assumed to be LNG Liquefied natural gas D, so, in actual use, in basin, the permittivity of the permittivity of the LNG Liquefied natural gas of institute's can and LNG Liquefied natural gas D is more approaching, Level meter is just got over close to the actual liquid level in basin by the detected liquid level of capacitive transducer, and namely its testing result is just more accurate; When the permittivity of the permittivity of the LNG Liquefied natural gas of institute's can in basin and LNG Liquefied natural gas D departs from when too much, the Level meter that adopts above-mentioned capacitive transducer just can't be judged actual liquid level in basin exactly according to the Capacity of sensor, also just can't detect exactly the liquid level of LNG Liquefied natural gas in basin, bring inconvenience will for normal can, transportation and the use of basin.
The model utility content
The purpose of this utility model is to provide a kind of primary and secondary capacitive transducer that can make the interior ring structure that Level meter detects LNG Liquefied natural gas liquid level in basin exactly.
For achieving the above object, the utility model has adopted following technological scheme.
The primary and secondary capacitive transducer of interior ring structure, comprise: main capacitance formula sensor, the structure of main capacitance formula sensor comprises: outer tube and the intervalve that is arranged in outer tube, the two ends of intervalve are connected in outer tube by major insulation support block insulating supporting respectively, be respectively arranged with at least one on outer tube and intervalve for the through hole of liquefaction rock gas turnover, main metal screen layer of drawing wire is electrically connected to outer tube, main metal core wire of drawing wire is electrically connected to intervalve, makes outer tube and intervalve as two testing electrodes of main capacitance formula sensor; Be characterized in: also be provided with a sub-capacitive transducer, the structure of sub-capacitive transducer comprises: also be provided with an inner tube in intervalve, on the one end setting major insulation support block at one end of inner tube, the other end of inner tube is connected in intervalve by interior dielectric support block insulating supporting, be provided with at least one on inner tube for the inner via hole of liquefaction rock gas turnover, the metal screen layer that son is drawn wire is electrically connected to outer tube, the metal core wire that son is drawn wire is electrically connected to inner tube, makes outer tube and inner tube as two testing electrodes of sub-capacitive transducer; And the length of inner tube is no more than 3/4ths of intervalve length.
Further, the primary and secondary capacitive transducer of aforesaid interior ring structure, wherein, the length of inner tube is no more than 1/2nd of intervalve length.
Further, the primary and secondary capacitive transducer of aforesaid interior ring structure, wherein, the length of inner tube is no more than 1/3rd of intervalve length.
Further, the primary and secondary capacitive transducer of aforesaid interior ring structure wherein, is coated with the end cap seat that welds mutually with outer tube outside the major insulation support block.
Further, the primary and secondary capacitive transducer of aforesaid interior ring structure wherein, is welded with electrode plate in intervalve, and main metal core wire of drawing wire is electrically connected to electrode plate by screw.
The beneficial effects of the utility model: when reality is used, the fully loaded Capacity CD the when signal processor in Level meter is first stored sub-capacitive transducer and filled LNG Liquefied natural gas D; When each can is used, signal processor collection and the fully loaded Capacity CA when storing sub-capacitive transducer and being filled other LNG Liquefied natural gas, and Capacity CA and CD are made comparisons, obtain reacting the value t of electric capacitance change ratio, signal processor recycling t goes to adjust the Capacity of main capacitance formula sensor, thereby can improve the measuring accuracy of liquid level, greatly reduce measurement error.Perhaps, can guarantee at first to be full of when utilizing the each can LNG of sub-capacitive transducer, thereby calculate the permittivity of the LNG Liquefied natural gas of each can, thereby the fully loaded Capacity in the time of can calculating exactly in advance each actual use of main capacitance formula sensor, can improve measuring accuracy equally, reduce measurement error.
Description of drawings
Fig. 1 is the structural representation of the primary and secondary capacitive transducer of interior ring structure described in the utility model.
Embodiment
Be further described below in conjunction with accompanying drawing and the preferred embodiment primary and secondary capacitive transducer to interior ring structure described in the utility model.
Shown in Figure 1; The primary and secondary capacitive transducer of interior 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 intervalve 2 that is arranged in outer tube 1; The two ends of intervalve 2 are connected in outer tube 1 by major insulation support block 3 and 31 insulating supportings respectively; Be coated with the end cap seat 4 that welds mutually with outer tube 1 outside major insulation support block 3; Be coated with the end cap seat 41 that welds mutually with outer tube 1 outside major insulation support block 31; By end cap seat 4 and 41 are set; Can protect major insulation support block 3 and 31 on the one hand; Major insulation support block 3 and 31 is connected in outer tube 1 and intervalve 2 more reliably; The two-end part of outer tube 1 is respectively arranged with at least one for the through hole 11 of liquefaction rock gas turnover; The two-end part of intervalve 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 to outer tube 1; Main metal core wire 61 of drawing wire 6 is electrically connected to intervalve 2---be welded with electrode plate 5 in the present embodiment in intervalve 2; Main metal core wire 61 and isolation layer thereof of drawing wire 6 passes the taper plug together successively; After end cap seat 4 and major insulation support block 3; Metal core wire 61 is electrically connected to electrode plate 5 by screw 10; Thereby guarantee that metal core wire 61 is connected with electrode plate 5 is reliable and stable; The conductor vibration that the taper plug can cause the external world intercepts outside electric connection point, effectively prevents electric connection point fracture sealing-off.Outer tube 1 and intervalve 2 are as two testing electrodes of main capacitance formula sensor; Also be provided with a sub-capacitive transducer; The structure of sub-capacitive transducer comprises: also be provided with an inner tube 8 in intervalve 2; One end of inner tube 8 is arranged on major insulation support block 31; The other end of inner tube 8 is connected in intervalve 2 by interior dielectric support block 32 insulating supportings; Be provided with at least one on inner tube 8 for the inner via hole 81 of liquefaction rock gas turnover; The metal screen layer 71 that son is drawn wire 62 is electrically connected to outer tube 1; The metal core wire 63 that son is drawn wire 62 is electrically connected to inner tube 8; Make outer tube 1 and inner tube 8 as two testing electrodes of sub-capacitive transducer; And the length of inner tube 8 is no more than 3/4ths of intervalve 2 length, the length that is preferably inner tube 8 is no more than 1/2nd of intervalve 2 length, more preferably the length of inner tube 8 is no more than 1/3rd of intervalve 2 length, to guarantee that when the can LNG Liquefied natural gas in basin, sub-capacitive transducer can be filled and first be full of LNG Liquefied natural gas than main capacitance formula sensor.
When reality is used, the primary and secondary capacitive transducer of interior ring structure described in the utility model is installed in basin, and make inner tube 8 be positioned at tank bottom, can guarantee that so sub-capacitive transducer can be filled and first fill LNG Liquefied natural gas than main capacitance formula sensor all the time when each can.Fully loaded Capacity CD when the signal processor in Level meter is first stored sub-capacitive transducer and filled LNG Liquefied natural gas D; When each can is used, signal processor collection and the fully loaded Capacity CA when storing sub-capacitive transducer and being filled other LNG Liquefied natural gas, and Capacity CA and CD are made comparisons, obtain reacting the value t of electric capacitance change ratio, signal processor recycling t goes to adjust the Capacity of main capacitance formula sensor, thereby can improve the measuring accuracy of liquid level, greatly reduce measurement error.Perhaps, can guarantee at first to be full of when utilizing the each can LNG of sub-capacitive transducer, thereby calculate the permittivity of the LNG Liquefied natural gas of each can, thereby the fully loaded Capacity in the time of can calculating exactly in advance each actual use of main capacitance formula sensor, can improve measuring accuracy equally, reduce measurement error.
Claims (5)
1. the primary and secondary capacitive transducer of interior ring structure, comprise: main capacitance formula sensor, the structure of main capacitance formula sensor comprises: outer tube and the intervalve that is arranged in outer tube, the two ends of intervalve are connected in outer tube by major insulation support block insulating supporting respectively, be respectively arranged with at least one on outer tube and intervalve for the through hole of liquefaction rock gas turnover, main metal screen layer of drawing wire is electrically connected to outer tube, main metal core wire of drawing wire is electrically connected to intervalve, makes outer tube and intervalve as two testing electrodes of main capacitance formula sensor; It is characterized in that: also be provided with a sub-capacitive transducer, the structure of sub-capacitive transducer comprises: also be provided with an inner tube in intervalve, on the one end setting major insulation support block at one end of inner tube, the other end of inner tube is connected in intervalve by interior dielectric support block insulating supporting, be provided with at least one on inner tube for the inner via hole of liquefaction rock gas turnover, the metal screen layer that son is drawn wire is electrically connected to outer tube, the metal core wire that son is drawn wire is electrically connected to inner tube, makes outer tube and inner tube as two testing electrodes of sub-capacitive transducer; And the length of inner tube is no more than 3/4ths of intervalve length.
2. the primary and secondary capacitive transducer of interior ring structure according to claim 1, it is characterized in that: the length of inner tube is no more than 1/2nd of intervalve length.
3. the primary and secondary capacitive transducer of interior ring structure according to claim 1, it is characterized in that: the length of inner tube is no more than 1/3rd of intervalve length.
4. the primary and secondary capacitive transducer of according to claim 1 and 2 or 3 described interior ring structures, is characterized in that: be coated with the end cap seat that welds mutually with outer tube outside the major insulation support block.
5. the primary and secondary capacitive transducer of according to claim 1 and 2 or 3 described interior ring structures, is characterized in that: be welded with electrode plate in intervalve, lead the metal core wire of drawing wire and be electrically connected to electrode plate by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196886 CN203258368U (en) | 2013-04-18 | 2013-04-18 | Primary-secondary capacitive sensor with inner ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320196886 CN203258368U (en) | 2013-04-18 | 2013-04-18 | Primary-secondary capacitive sensor with inner ring structure |
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| Publication Number | Publication Date |
|---|---|
| CN203258368U true CN203258368U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320196886 Withdrawn - After Issue CN203258368U (en) | 2013-04-18 | 2013-04-18 | Primary-secondary capacitive sensor with inner ring structure |
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| CN (1) | CN203258368U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216727A (en) * | 2013-04-18 | 2013-07-24 | 苏州赛智达智能科技有限公司 | Primary and secondary capacitance-type sensor with inner ring structure |
-
2013
- 2013-04-18 CN CN 201320196886 patent/CN203258368U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103216727A (en) * | 2013-04-18 | 2013-07-24 | 苏州赛智达智能科技有限公司 | Primary and secondary capacitance-type sensor with inner ring structure |
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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: 20140410 |
|
| 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: 20140410 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: 20141215 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 215633 SUZHOU, JIANGSU PROVINCE TO: 215634 SUZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141215 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: 20150408 |
|
| RGAV | Abandon patent right to avoid regrant |