CN2368015Y - Directional valve type liquid-level sensor - Google Patents
Directional valve type liquid-level sensor Download PDFInfo
- Publication number
- CN2368015Y CN2368015Y CN 98213305 CN98213305U CN2368015Y CN 2368015 Y CN2368015 Y CN 2368015Y CN 98213305 CN98213305 CN 98213305 CN 98213305 U CN98213305 U CN 98213305U CN 2368015 Y CN2368015 Y CN 2368015Y
- Authority
- CN
- China
- Prior art keywords
- liquid level
- level sensor
- switch
- liquid
- sensor
- 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.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 37
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 20
- 239000004020 conductor Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Landscapes
- Level Indicators Using A Float (AREA)
Abstract
The utility model relates to a sensor (probe) used for detecting a liquid level. A directional switch (such as a mercury switch) is arranged in a floating body. The utility model uses that the change of the switching state of the directional switch can occur when a sensor is floated by liquid to check a liquid level. Due to the fact that a switch contact is closed in a glass pipe, the switch contact is not contacted with air and liquid, the oxidation and the corrosion of the switch contact can not occur, and thus, the utility model has high reliability, long life and convenient installation.
Description
This novel sensor (liquid-level probe) that detects liquid level that relates to.
The use of automatic control of liquid in the modern life is more and more general.It is very big that the performance of automatic control of liquid equipment and price are influenced by liquid level sensor: various liquid-pressure pick-ups have advantage of high precision, yet its cost is very expensive, and support circuit is also complicated; The simplest liquid level sensor is a metallic object, link to each other with lead between metallic object and the device for controlling water level, its profile is very careless, it can be sheet metal, Metallic rod or other body, utilize the resistance that fills between the metallic object behind the feed liquor body or electric capacity to change to pass judgment on liquid level and whether arrive sensor, this sensing is the most cheap, but because of the resistance between sensor or electric capacity are subjected to the influence of the conductance of the liquid of surveying and temperature etc. very big, metallic object self is aging also very fast, and (metallic object is corroded in liquid level, electricity is high and change conduction property), cause the reliability of Level Detection very low; Also there is similar problem in other various liquid level sensors.
This novel purpose just is to release a kind of reliability height, cheapness and liquid level sensor easy for installation.
This novel purpose is achieved like this:
At an object that can float over liquid surface (buoyancy aid hereinafter referred to as, can be pond foam plastics or airtight hollow body) on, being embedded an on off state (being switched on or switched off) lays the relevant switch of direction with switch and (calls the directivity switch in the following text, as mercury cut-off), utilize sensor to become flat the crouching during state of being floated by liquid from the vertical state that is draped, the on off state of directivity switch will change and check liquid level, and the two poles of the earth of directivity switch link to each other with opertaing device with insulated conductor respectively; Being connected between buoyancy aid and the contiguous fixed object (as the water tower loam cake or stand on mark post in the liquid) is active the connection, for example connect buoyancy aid and water tower loam cake (suspension line also can utilize above-mentioned lead to replace) with a suspension line, the connection of suspension line and the shape of buoyancy aid must satisfy a basic demand: when buoyancy aid is afloat and buoyancy aid when being suspension status, the directivity switch has different on off operating modes, as buoyancy aid when the suspension status, the directivity switch is on-state, buoyancy aid is when afloat, the directivity switch just should be off-state, and vice versa.Specifically should become what shape as for buoyancy aid, hang is how, and various schemes can be arranged, and accompanying drawing is a kind of liquid level sensor example of simple and feasible:
Ellipse in the accompanying drawing is represented a universal mercury cut-off, and buoyancy aid is a hollow cylindrical plastic bottle, and the bottle shell entangles mercury cut-off tightly, and the lead-in wire of mercury cut-off should add insulation protection, and it should seal by bottle shell place, prevents that fluid seepage from advancing bottle.Two leads of mercury cut-off are also used as suspension line.The mercury cut-off position can be fixed with viscose glue.
When buoyancy aid is in suspension status (accompanying drawing 1), gravity makes buoyancy aid and mercury cut-off be in vertical position, and mercury gathers the bottom in mercury cut-off, makes mercury cut-off be on-state; When buoyancy aid floats over liquid surface (accompanying drawing 2), buoyancy aid is the accumbency direction together with mercury cut-off, and mercury flows to side, and the mercury cut-off contact disconnects.
Because the contact of mercury cut-off is sealed in the glass tube, do not contact with air or liquid to be detected, thereby its contact can oxidation, corrosion, contact is reliable, and the life-span is long, the installation of this sensor is also very simple, an end of suspension line is hung near the testing liquid the fixed object get final product.
Implement this novel can batch process in batches in factory, batch process can have two kinds of methods, and a kind of is to close close hollow body (bottle) to use injection mo(u)lding, and the bottle shell just in time tightly is enclosed within on the mercury cut-off wall, makes the mercury cut-off stationkeeping.Another kind method is directly to pour into a mould polyfoam on mercury cut-off, makes it moulding.Mercury cut-off should be selected sensitivity lower (as 30 °-60 °).
In actual applications, available a plurality of novel sensors connect together, and they are suspended on the differing heights place of liquid level, like this, just can show liquid level by relevant instrument.
Claims (3)
1. a liquid level sensor that detects the liquid level height has conductor wire to be attached thereto, and liquid level signal is passed to the liquid level opertaing device by lead, and this novel feature is:
(1) liquid level sensor is the object that can float over liquid surface;
(2) liquid level sensor is equipped with an on off state (being switched on or switched off) the directivity switch relevant with the switch placement direction;
2. according to the described liquid level sensor of claim 1, the shell that it is characterized in that liquid level sensor is an airtight hollow body;
3. according to the described liquid level sensor of claim 1, it is characterized by the directivity switch is mercury cut-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98213305 CN2368015Y (en) | 1998-05-02 | 1998-05-02 | Directional valve type liquid-level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98213305 CN2368015Y (en) | 1998-05-02 | 1998-05-02 | Directional valve type liquid-level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2368015Y true CN2368015Y (en) | 2000-03-08 |
Family
ID=33967307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98213305 Expired - Fee Related CN2368015Y (en) | 1998-05-02 | 1998-05-02 | Directional valve type liquid-level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2368015Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479587A (en) * | 2017-08-07 | 2017-12-15 | 云南靖创液态金属热控技术研发有限公司 | A kind of level switch based on liquid metal |
| CN110967096A (en) * | 2018-09-29 | 2020-04-07 | 北京海慧电讯科技有限公司 | float flowmeter |
-
1998
- 1998-05-02 CN CN 98213305 patent/CN2368015Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107479587A (en) * | 2017-08-07 | 2017-12-15 | 云南靖创液态金属热控技术研发有限公司 | A kind of level switch based on liquid metal |
| CN110967096A (en) * | 2018-09-29 | 2020-04-07 | 北京海慧电讯科技有限公司 | float flowmeter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2368015Y (en) | Directional valve type liquid-level sensor | |
| CN201364192Y (en) | Liquid level sensor | |
| CN211422879U (en) | Mute split type air conditioner drainage pump | |
| CN201589646U (en) | water level sensor | |
| CN201218744Y (en) | Non-contact type water level transducer | |
| CN2149610Y (en) | Float type liquid level sensing device | |
| CN101387537A (en) | Liquid level sensor | |
| CN201364190Y (en) | Float type liquid level sensor | |
| CN203405265U (en) | Water temperature and water level detector of solar water heater | |
| CN201289245Y (en) | External self control liquid level and liquid temperature sensor | |
| CN220016905U (en) | Sensor support of self-adaptation liquid level | |
| CN201145601Y (en) | Non-contact type water level transducer | |
| CN2540624Y (en) | Liquid level detector | |
| CN210198496U (en) | Capacitance induction type pipeline liquid level sensor and nonmetal pipeline liquid level detection structure | |
| CN209524985U (en) | A kind of single switch two point form liquidometer | |
| CN102829622A (en) | Bidirectional pneumatic cupola material level meter | |
| CN209432232U (en) | A kind of plug-in capacitance induction level switch | |
| CN203552086U (en) | Floating liquid level switch | |
| CN218849363U (en) | Intelligent electronic liquid level switch | |
| CN2108282U (en) | Float-type liquid level sensor | |
| CN201488358U (en) | Solar water heater test device | |
| CN2532462Y (en) | Liquid level probe for water tank of solar energy water-heater | |
| KR200250375Y1 (en) | Non-contact fuel gauge using magnetic switch | |
| CN2359672Y (en) | Rocking-bar floating-ball type water level sensor | |
| CN202836154U (en) | Two-way air pressure type cupola furnace level gage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |