CN2035872U - Photoelectric measuring device for liquid level - Google Patents
Photoelectric measuring device for liquid level Download PDFInfo
- Publication number
- CN2035872U CN2035872U CN 88214964 CN88214964U CN2035872U CN 2035872 U CN2035872 U CN 2035872U CN 88214964 CN88214964 CN 88214964 CN 88214964 U CN88214964 U CN 88214964U CN 2035872 U CN2035872 U CN 2035872U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- circuit
- photoresistance
- luminotron
- monitoring
- 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.)
- Withdrawn
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000012806 monitoring device Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
Images
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- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a photoelectric monitoring and measuring device for liquid level used for monitoring and measuring liquid level of containers, in particular to monitoring and measuring the liquid level of pressure containers. The photoelectric monitoring and measuring device comprises a containing barrel that is communicated with the pressure container, a photoelectric measuring device that is arranged on the containing barrel, a corresponding photoelectric monitoring circuit, a warning device, etc. The photoelectric monitoring and measuring device comprises a luminotron, a light reception pipe, a non-transparent floater, a stainless net barrel, etc. The photoelectric monitoring circuit is a silicon controlled switch circuit to control the warning device. When the liquid level lies in greatest upper limit (or greatest lower limit) water level, the photoelectric monitoring circle outputs signal and automatically warns. The photoelectric monitoring and measuring device has the advantages of simple structure, reliable performance, wide adapting range, etc.
Description
The utility model relates to a kind of photoelectricity level monitoring device, is used for the particularly level monitoring of pressure vessel of container.
Pressure vessel, very important as the level monitoring of boiler for safety in production.Usually, the liquid level of boiler has a upper and lower bound, too high or too low all can be dangerous.Existing level monitoring device is to be communicated with a volumetric cylinder in the side of container, and corresponding to bound liquid level place installing electrodes, the resistance variations when being higher than electrode and being lower than electrode by detecting liquid level starts warning device, reaches the purpose of level monitoring.Because the electrolyte content variation can make resistivity great changes will take place in the liquid, simultaneously, in the liquid impurity on electrode, precipitate, fouling, make the resistance measurement instability, thereby influenced the reliability of this monitoring mode.
The purpose of this utility model is a kind of photoelectric liquid-levle monitoring device of design, makes the not influence of the interior impurity content of liquid body of level monitoring.
The utility model comprises the volumetric cylinder that is communicated with pressure vessel, is installed in the liquid level detector on the volumetric cylinder, and corresponding observation circuit.The feature of this device is that described liquid level detector is an Electro-Optical Sensor Set, is made up of luminotron, light receiver pope, light source, photoresistance, opaque float, stainless (steel) wire tube etc.; Luminotron is relative with light receiving tube to be installed on the volumetric cylinder two side, adopt thread seal to be connected with volumetric cylinder, luminotron and light receiving tube front end all melt transparent glass are arranged, light source is placed in the luminotron, photoresistance is placed in the light receiving tube, and float is placed on the volumetric cylinder central authorities liquid level, and the stainless (steel) wire tube is axially fixed in volumetric cylinder central authorities, entangle float, photoresistance connects observation circuit.
The observation circuit of this device is by power supply, photoresistance, bidirectional triode thyristor, composition such as variable resistor and warning circuit, circuit structure and connected mode are (referring to figure two), variable resistor Rw and photoresistance Rc are connected on respectively between two utmost points of bidirectional triode thyristor Ks and the control utmost point, form a branch pressure-controlled bridge circuit, bridge circuit two termination AC power, the variable resistor resistance is transferred and is subjected to the light time controllable silicon to be in cut-off state in photoresistance, be not subjected to the light time to be in conducting state, meet a filter capacitor C between utmost point of controllable silicon and a bridge circuit end, the capacitor C two ends are as the relay or the electronic switch of output circuit taking alarm.
According to the needs of monitoring water level range, generally corresponding to bound liquid level place one cover luminotron and light receiving tube is installed respectively at volumetric cylinder, two photoresistance series connections are in observation circuit.
The principle of work of this photoelectricity level monitoring device is, when liquid level was in normal position between the bound liquid level, two photoresistance all were subjected to light, and the SCR control end is in electronegative potential, and controllable silicon ends, and warning device cuts out.When liquid level arrives the upper limit or lower position, there is the light of a luminotron to be blocked by float, corresponding photoresistance is not subjected to light, and resistance raises, and the SCR control terminal potential improves, the controllable silicon conducting, warning device sends alerting signal.
Warning device can adopt various types, as acoustic-optic alarm, shakes control warning device etc., can select commercially available approved product for use.
Advantages such as the utility model has dependable performance owing to adopt the photo-electric monitoring mode, and is simple in structure, applied widely.
Further describe the utility model below in conjunction with drawings and Examples.
Figure one is the structural drawing of liquid level detector; Among the figure, 1 is volumetric cylinder, and 2 is luminotron, and 3 is light receiving tube, and 4 is opaque float, and 5 is the stainless (steel) wire tube, and 6 is liquid level, and 7 is transparent glass.
Figure two is photoelectric monitor circuit principle structure figure; Frame of broken lines A is a warning device among the figure.
Figure three is the concrete circuit of implementing of of the utility model photoelectric monitor circuit; Among the figure, IC
1Be photoelectrical coupler, IC
2Be the high-power driving switch integrated circuit, B is the alarm transmission machine.Present embodiment components and parts model is:
Controllable silicon diode KS
11AM1;
Photoelectrical coupler IC
184N25;
High-power driving switch integrated circuit IC
28TWH8778;
Alarm transmission machine B
1YK102 or YK103 remote-control transmitting and receiver.
Figure four is present embodiment components and parts mounting structure figure.Among the figure, 8 are photoresistance lead-in wire terminals, and 9 is alarm transmission machine terminals.
Claims (1)
- A kind of photoelectricity level monitoring device comprises the volumetric cylinder that is communicated with pressure vessel, is installed in the liquid level detector on the volumetric cylinder, and corresponding observation circuit, and feature of the present utility model is:1, described liquid level detector is an Electro-Optical Sensor Set, is made up of luminotron, light receiving tube, light source, photoresistance, opaque float, stainless (steel) wire tube etc.; Luminotron is relative with light receiving tube to be installed on the volumetric cylinder two side, adopt thread seal to be connected with volumetric cylinder, luminotron and light receiving tube front end melt transparent glass, light source is placed in the luminotron, photoresistance is placed in the light receiving tube, and float is placed on the volumetric cylinder central authorities liquid level, and the stainless (steel) wire tube is axially fixed in volumetric cylinder central authorities, entangle float, photoresistance connects observation circuit;2, described observation circuit is made up of power supply, photoresistance, bidirectional triode thyristor, variable resistor and warning circuit etc., circuit structure and connected mode are, variable resistor and photoresistance are connected on respectively between two utmost points of bidirectional triode thyristor and the control utmost point, form a branch pressure-controlled bridge circuit, bridge circuit two termination AC power, connect a filter capacitor between utmost point of controllable silicon and a bridge circuit end, the electric capacity two ends are as the relay or the electronic switch of output circuit taking alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214964 CN2035872U (en) | 1988-10-18 | 1988-10-18 | Photoelectric measuring device for liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214964 CN2035872U (en) | 1988-10-18 | 1988-10-18 | Photoelectric measuring device for liquid level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2035872U true CN2035872U (en) | 1989-04-12 |
Family
ID=4847831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88214964 Withdrawn CN2035872U (en) | 1988-10-18 | 1988-10-18 | Photoelectric measuring device for liquid level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2035872U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410635C (en) * | 2004-02-20 | 2008-08-13 | 暨南大学 | level gauge |
| CN101506627B (en) * | 2006-08-24 | 2010-12-29 | 杜酷尔有限公司 | Device for measuring specific gravity and height of liquid |
| CN102445235A (en) * | 2011-12-19 | 2012-05-09 | 深圳市华测检测技术股份有限公司 | Small-object tester |
| CN101408447B (en) * | 2007-10-08 | 2012-06-27 | Vega格里沙贝两合公司 | Fill level measuring device with explosion-proof casing |
| CN103176484A (en) * | 2011-12-23 | 2013-06-26 | 晓健科技（大连）有限公司 | Intelligent water level control system |
| CN110307940A (en) * | 2019-06-21 | 2019-10-08 | 许继集团有限公司 | Converter valve valve tower and its leakage inspector |
-
1988
- 1988-10-18 CN CN 88214964 patent/CN2035872U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100410635C (en) * | 2004-02-20 | 2008-08-13 | 暨南大学 | level gauge |
| CN101506627B (en) * | 2006-08-24 | 2010-12-29 | 杜酷尔有限公司 | Device for measuring specific gravity and height of liquid |
| CN101408447B (en) * | 2007-10-08 | 2012-06-27 | Vega格里沙贝两合公司 | Fill level measuring device with explosion-proof casing |
| CN102445235A (en) * | 2011-12-19 | 2012-05-09 | 深圳市华测检测技术股份有限公司 | Small-object tester |
| CN103176484A (en) * | 2011-12-23 | 2013-06-26 | 晓健科技（大连）有限公司 | Intelligent water level control system |
| CN110307940A (en) * | 2019-06-21 | 2019-10-08 | 许继集团有限公司 | Converter valve valve tower and its leakage inspector |
| CN110307940B (en) * | 2019-06-21 | 2020-12-08 | 许继集团有限公司 | Converter valve tower and its water leakage 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 | ||
| 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 |