CN2068230U - Tubular capacitance sensor - Google Patents
Tubular capacitance sensor Download PDFInfo
- Publication number
- CN2068230U CN2068230U CN 89219440 CN89219440U CN2068230U CN 2068230 U CN2068230 U CN 2068230U CN 89219440 CN89219440 CN 89219440 CN 89219440 U CN89219440 U CN 89219440U CN 2068230 U CN2068230 U CN 2068230U
- Authority
- CN
- China
- Prior art keywords
- tube
- elongated tubular
- cylinder
- receiving pole
- tubular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model relates to a tubular capacitance sensor, comprising a metallic elongate tube 7. The upper end of the metallic elongate tube is provided with a flange plate 1 for fixation. The lower part of the flange plate 1 is provided with an end cap 3, an isolating bakelite 4, a barrel 6, a discharge electrode barrel 9, a receiving electrode barrel 11 and a screening barrel 13. A wire connecting terminal 5, a discharge circuit 8 and a receiving and amplifying pre-electrode 10 are correspondingly arranged on the elongate tube 7, and the discharge electrode barrel 9 and the receiving electrode barrel 11 form a set of sensors. A plurality of sets of sensors can be arranged on the elongated tube 7 according to needs. A cable 2 guides a lead wire to a signal displaying instrument to switch on the power, and each set of sensors begin to work to show the storing state of the material positioned in a container accurately.
Description
The utility model is a tubular type capacitive transducer that is used for monitoring tun material position.
Sensor is to be used for to measured generation response and the device of available electric signal is provided.Existing capacitive transducer great majority all are two polar-plate-types, when being used to monitor material, particularly for solid material, often between pole plate, store up the folder material easily, therefore the situation that the signal mistake shows usually takes place, be not suitable for the monitoring of relatively large material, and volume is big, the installation and maintenance inconvenience.The tubulose capacitive transducer is to be fitted together as the two poles of the earth by inside and outside two pipe boxes, can only be used for the usefulness of liquid level monitoring, can not be used for the prison side of solid material.Retrieve and consult domestic and international relevant documents and materials through the applicant.Still find no and the same or analogous record of the utility model.
The purpose of this utility model is in order to monitor the position of material in the tun exactly, to overcome the shortcoming and defect part of existing monitoring device, so designed a tubular type capacitive transducer.
Below be particular content of the present utility model and most preferred embodiment:
As shown in Figure 1, a metal elongated tubular 7 is arranged, the ring flange 1 that maintenance is used is equipped with in the upper end, upper end cover 3 is housed below ring flange 1, bakelite 4 and cylinder 6, in cylinder 6, on the elongated tubular 7 of correspondence connection terminal 5 is housed, connection terminal 5 links to each other with cable 2, emitter tube 9 is housed below cylinder 6, radiating circuit 8 in the emitter tube 9 is contained on the elongated tubular 7, receiving pole tube 11 is housed below launching tube 9, reception in the receiving pole tube 11 is amplified the preposition utmost point 10 and is contained on the elongated tubular 7, shielding cylinder 13 is housed below receiving pole tube 11, the two ends of lead-in wire 12 link to each other with shielding cylinder 13 with elongated tubular 7 respectively, emitter tube 9 and receiving pole tube 11 are formed one group of sensor, can be provided with some groups as required, go here and there successively on elongated tubular 7, be equipped with shielding cylinder 13 between every group, cylinder 6, emitter tube 9, receiving pole tube 11 and shielding cylinder 13 all are equipped with bakelite each other, below bottom end cover 14, pass through spring pad, circular washer, nut and end socket 15 are fixed tightly in each group sensor on the long tubule 7, outside each seam crossing adopts the polytetrafluoroethylraw raw material band sealing, institute is leaded all to be walked in elongated tubular 7 and links to each other with connection terminal 5, receives by cable 2 on the instrument of shows signal.As shown in Figure 2, radiating circuit 8 is by resistance R
1, R
2, capacitor C
1, C
2, C
3, diode D and integrated circuit NE555 form, the joint of integrated circuit NE555 links to each other with emitter tube 9.As shown in Figure 3, receiving the preposition utmost point 10 of amplification is by resistance R
3, R
4, R
5, R
6, R
7, R
8, R
9And capacitor C
4, C
5, and field effect transistor T form, in resistance R
3And R
5Between by the lead-in wire link to each other with receiving pole tube 11, the lead-in wire A shown in the arrow connects the signal Displaying Meter.
The utility model vertically inserts in the container in use, apart from about 0.2 meter of chamber wall, by ring flange 1 upper end is fixed, with the leaded signal Displaying Meter of correspondingly receiving in the cable 2, energized, sensor is respectively organized in adjustment can clearly show exactly that material stores situation in the container.
The utility model has the advantages that:
1, a pipe no-movable part is easy to install;
2, segmentation accuracy in detection height is not subjected to temperature, effects of humidity change substantially;
3, detection material scope is wide, and all relative dielectric constants all can be monitored greater than 2 material;
But 4 remote transmission signals (150m) are applicable to be operated in rugged surroundings.
Description of drawings:
Fig. 1 is a structural representation of the present utility model, and accompanying drawing can make an abstract;
Fig. 2 is the principle schematic of the utility model radiating circuit 8;
Fig. 3 is that the utility model receives the circuit theory synoptic diagram that amplifies the preposition utmost point 10.
Claims (3)
1, a tubular type capacitive transducer, it is characterized in that having a metal elongated tubular 7, the ring flange 1 that maintenance is used is equipped with in the upper end, end cap 3 is housed below ring flange 1, bakelite 4 and cylinder 6, in cylinder 6, on the elongated tubular 7 of correspondence connection terminal 5 is housed, connection terminal 5 links to each other with cable 2, emitter tube 9 is housed below cylinder 6, radiating circuit 8 in the emitter tube 9 is contained on the elongated tubular 7, receiving pole tube 11 is housed below emitter tube 9, reception in the receiving pole tube 11 is amplified the preposition utmost point 10 and is contained on the elongated tubular 7, shielding cylinder 13 is housed below receiving pole tube 11, the two ends of lead-in wire 12 link to each other with shielding cylinder 13 with elongated tubular 7 respectively, emitter tube 9 and receiving pole tube 11 are formed one group of sensor, can be provided with some groups as required, go here and there successively on elongated tubular 7, be equipped with shielding cylinder 13 between every group, cylinder 6, emitter tube 9, receiving pole tube 11 and shielding cylinder 13 all are equipped with bakelite each other, below bottom end cover 14, pass through spring pad, circular washer, nut and end socket 15 are fixed tightly in each group sensor on the elongated tubular 7, outside each seam crossing adopts the polytetrafluoroethylraw raw material band sealing, institute is leaded all to be walked in elongated tubular 7 and links to each other with connection terminal 5, receives by cable 2 on the instrument of shows signal.
2, a tubular type capacitive transducer as claimed in claim 1 is characterized in that said radiating circuit 8 is by resistance R
1, R
2, capacitor C
1, C
2, C
6, diode D and integrated circuit NE555 form, the joint of integrated circuit NE555 links to each other with emitter tube 9.
3, a tubular type capacitive transducer as claimed in claim 1 is characterized in that it is by resistance R that the preposition utmost point 10 is amplified in said reception
3, R
4, R
5, R
6, R
7, R
8, R
9And capacitor C
4, C
5, and field effect transistor T form, in resistance R
3And R
5Between link to each other with receiving pole tube 11 by lead-in wire, the A that goes between connects the signal Displaying Meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219440 CN2068230U (en) | 1989-11-06 | 1989-11-06 | Tubular capacitance sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89219440 CN2068230U (en) | 1989-11-06 | 1989-11-06 | Tubular capacitance sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068230U true CN2068230U (en) | 1990-12-26 |
Family
ID=4874307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89219440 Withdrawn CN2068230U (en) | 1989-11-06 | 1989-11-06 | Tubular capacitance sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068230U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688803B (en) * | 2007-07-13 | 2014-02-05 | 因勒纪汽车系统研究公司 | Method for mounting capacitive level sensor in liquid tank |
| CN103900661B (en) * | 2014-02-19 | 2017-01-25 | 东北电力大学 | Segmented liquid level sensor based on capacitance-to-digital conversion technology |
| CN107796481A (en) * | 2017-09-22 | 2018-03-13 | 湖北宏远仪表制造股份有限公司 | A kind of magnetic level transmitter |
| CN107907354A (en) * | 2017-11-07 | 2018-04-13 | 南京高华科技股份有限公司 | One kind is used for standard EMU Cross deformation detection device |
-
1989
- 1989-11-06 CN CN 89219440 patent/CN2068230U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101688803B (en) * | 2007-07-13 | 2014-02-05 | 因勒纪汽车系统研究公司 | Method for mounting capacitive level sensor in liquid tank |
| CN103900661B (en) * | 2014-02-19 | 2017-01-25 | 东北电力大学 | Segmented liquid level sensor based on capacitance-to-digital conversion technology |
| CN107796481A (en) * | 2017-09-22 | 2018-03-13 | 湖北宏远仪表制造股份有限公司 | A kind of magnetic level transmitter |
| CN107907354A (en) * | 2017-11-07 | 2018-04-13 | 南京高华科技股份有限公司 | One kind is used for standard EMU Cross deformation detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |