CN2687625Y - Air-conduction pressure liquid level sensor - Google Patents
Air-conduction pressure liquid level sensor Download PDFInfo
- Publication number
- CN2687625Y CN2687625Y CN 200420017585 CN200420017585U CN2687625Y CN 2687625 Y CN2687625 Y CN 2687625Y CN 200420017585 CN200420017585 CN 200420017585 CN 200420017585 U CN200420017585 U CN 200420017585U CN 2687625 Y CN2687625 Y CN 2687625Y
- Authority
- CN
- China
- Prior art keywords
- pressure
- liquid level
- level sensor
- air
- utility
- 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
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model relates to an air-conduction pressure liquid level sensor, a liquid level detection sensor that is used for storing tanks, storing slots and the parts of tank storing and dismounting of a tank car, wherein the two ends of an air conduit are respectively connected with a pneumatic tube and a pressure seat; the pressure seat is provided with a pressure sensor which is connected with the signal converter and the output line in an explosion-proof box; metal bellows and stay pipes are arranged outside of the air conduit to protect the air conduit which is arranged in the metal bellows and the stay pipes; the metal bellows are respectively connected with the connectors at the upper ends of the pressure seat and a flange plate, while the connectors at the lower ends of the pneumatic tube and the flange plate are respectively connected with the two ends of the stay pipes. Based on the principle that the liquid pressure intensity at different depths is equal to the gas pressure intensity in the air conduit, the air-conduction pressure liquid level sensor of the utility model is not directly contacted with the liquid to be detected, and the liquid level is supervised by the way of gas isolation. The utility model is of simple and compact structure, good hermeticity, low cost, convenient installation without electric detection, good explosion-proof safety, and extensive range of application, and is free from the influence of liquid viscosity, state, etc.
Description
Technical field the utility model relates to and a kind ofly is used for that storage tank storage tank, tank car are canned, the liquid level detecting sensor at position such as remove stage makeup and costume.
The present liquid level detecting sensor of background technology has a lot, but can detect to be suitable for few to the thick liquid liquid level, has only non-contacting sensor, this kind sensor easily by medium pollution, be subject to gas phase and disturb, and on-the-spot charged use is also dangerous, there is potential safety hazard, its use is restricted.So adopt manual control mostly, its efficient is low, dangerous.
The liquid level sensor of existing isolation detection, as " a kind of liquid level sensor " (patent No. 02279691), this sensor has the non-magnetic conduction conduit of a lower end closure, and catheter jacket has an annular buoyancy aid and a ring-shaped magnet, and they can be with the upper and lower free movement of liquid level variation.One group of tongue tube of series arrangement in conduit, an end with draw a lead-in wire after common port links to each other, the other end is drawn another lead-in wire after linking to each other in twos by certain electronic component.When level change, the electric parameter between two lead-in wires also will change, and two lead-in wires link to each other with testing agency, can carry out multiple spot to the differing heights that changes liquid level and detect.Explosion-proof liquid level sensor is arranged,, mainly form by single or multiple photoelectric tubes, metal fixed cover, photoelectric tube top light penetrating object, stainless-steel tube, ring flange, shielded cable etc. as " overpressure resistant and explosion-proof formula photoelectric liquid level sensor " (patent No. 01201229).There is airtight and watertight padding stainless-steel tube inside, between ring flange and the stainless-steel tube airtight and watertight padding is arranged.It does not have mechanical contact, the reliability height, and corrosion resistant, antiseepage, leakproof, explosion-proof are handled in the disposable embedding of inner employing.Can be used for vacuum, pressure vessel and inflammable, explosive dangerous situation.
The summary of the invention the purpose of this utility model is at above-mentioned present situation, the conductance pressure type liquid level sensor that aims to provide the no electro-detection in a kind of scene, has the safety anti-explosive performance.
The implementation of the utility model purpose is, conductance pressure type liquid level sensor, airway 2 one ends and pneumatic tube 9 are tightly connected, one end links to each other with pressure seat 14, pressure transducer 13 usefulness compacting rings 12 are installed on the pressure seat, and pressure transducer connects signal converter in the armored cassette 10 and outer output line thereof.
The utility model utilizes the pressure of the liquid of different depth to equal the principle of gas pressure intensity in the airway, liquid level is monitored the not direct contact detection liquid of sensor by the gas barrier mode.The utility model is simple and compact for structure, good airproof performance, cost are low, easy for installation, no electro-detection, and safety anti-explosive is good, uses the not influence of liquid body viscosity, state etc., and is applied widely.
Description of drawings
Accompanying drawing is the utility model structural representation
Embodiment is with reference to accompanying drawing, and airway 2 one ends of the present utility model and pneumatic tube 9 are tightly connected, and an end links to each other with pressure seat 14.Pressure transducer 13 usefulness compacting rings 12 are installed on the pressure seat, and pressure transducer connects signal converter in the armored cassette 10 and outer output line thereof.10 of pressure seat 14 and armored cassettes are connected by connector 11.
For the protection airway, metallic bellows 1, stay pipe 6, flange components have been added at airway.Metallic bellows 1 one ends link to each other with pressure seat 14, one end links to each other with the connector 3 of ring flange upper end, and an end of airway 2 is contained in the metallic bellows, and the airway on the pneumatic tube has stay pipe 6 outward, the stay pipe lower end is connected with pneumatic tube, and the upper end links to each other with the connector 5 of ring flange lower end.
When using the utility model, the utility model is inserted in the liquid, along with the rising of liquid level, hydraulic pressure increases, and the air pressure in the airway increases, and the signal of pressure transducer is by converter and outer output line output thereof, can recognize the variation of liquid level from the tank body outside, thereby give continuous monitoring.As making detected liquid control to certain position, then place the utility model in this position, liquid level is during less than this, and sensor does not have signal, and liquid level then has hydraulic pressure to produce as one to this position, and the air pressure change in the airway is implemented the control of some position.
Pressure transducer of the present utility model, signal converter adopt general sensor, converter commonly used.
Claims (3)
1, conductance pressure type liquid level sensor, it is characterized in that airway (2) one ends and pneumatic tube (9) are tightly connected, one end links to each other with pressure seat (14), pressure transducer (13) is installed on the pressure seat with compacting ring (12), and pressure transducer connects interior signal converter of armored cassette (10) and outer output line thereof.
2, conductance pressure type liquid level sensor according to claim 1, it is characterized in that having added metallic bellows (1), stay pipe (6), flange components at airway, metallic bellows (1) one end links to each other with pressure seat (14), one end links to each other with the connector (3) of ring flange upper end, one end of airway (2) is contained in the metallic bellows, airway on the pneumatic tube has stay pipe (6) outward, and the stay pipe lower end is connected with pneumatic tube, and the upper end links to each other with the connector (5) of ring flange lower end.
3, conductance pressure type liquid level sensor according to claim 1 is characterized in that being connected by connector (11) between pressure seat (14) and armored cassette (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017585 CN2687625Y (en) | 2004-03-30 | 2004-03-30 | Air-conduction pressure liquid level sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420017585 CN2687625Y (en) | 2004-03-30 | 2004-03-30 | Air-conduction pressure liquid level sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2687625Y true CN2687625Y (en) | 2005-03-23 |
Family
ID=34668988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420017585 Expired - Fee Related CN2687625Y (en) | 2004-03-30 | 2004-03-30 | Air-conduction pressure liquid level sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2687625Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033236A (en) * | 2012-12-31 | 2013-04-10 | 西安工业大学 | Anti-freezing device of liquid level transmitter |
| CN103616055A (en) * | 2013-11-20 | 2014-03-05 | 成都老肯科技股份有限公司 | Liquid level detection device and method for medical cleaners |
| CN108072408A (en) * | 2018-01-22 | 2018-05-25 | 深圳市宏电技术股份有限公司 | A kind of undersea detection device |
| CN111547972A (en) * | 2020-05-25 | 2020-08-18 | 安徽大学 | Three-grid septic tank adopting air pressure to detect liquid level |
-
2004
- 2004-03-30 CN CN 200420017585 patent/CN2687625Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033236A (en) * | 2012-12-31 | 2013-04-10 | 西安工业大学 | Anti-freezing device of liquid level transmitter |
| CN103033236B (en) * | 2012-12-31 | 2016-06-15 | 西安工业大学 | Fluid level transmitter defroster |
| CN103616055A (en) * | 2013-11-20 | 2014-03-05 | 成都老肯科技股份有限公司 | Liquid level detection device and method for medical cleaners |
| CN108072408A (en) * | 2018-01-22 | 2018-05-25 | 深圳市宏电技术股份有限公司 | A kind of undersea detection device |
| CN111547972A (en) * | 2020-05-25 | 2020-08-18 | 安徽大学 | Three-grid septic tank adopting air pressure to detect liquid level |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2687625Y (en) | Air-conduction pressure liquid level sensor | |
| CN206593808U (en) | A kind of pipeline connector leak detector | |
| CN104752025A (en) | Oil conservator with multiple monitor modes | |
| CN201440087U (en) | High security liquid level sensor | |
| CN206960068U (en) | Sealing for pressure vessels detection means | |
| CN205909851U (en) | Transformer stores up blocking detector of oil tank respirator | |
| CN213543884U (en) | Prevent pulsation breakdown damping pressure transmitter | |
| CN204087821U (en) | Square tube weld seam helium air-leakage test vacuum frock | |
| CN101509554B (en) | Pore seal structure | |
| CN208736503U (en) | A kind of explosion-suppression and intrinsic safety formula ultrasonic flow sensor | |
| CN213022107U (en) | Waterproof and anti-corrosion meteorological air pressure sensing device | |
| CN212609539U (en) | Vertical pipe and loading and unloading crane pipe | |
| CN209117238U (en) | A kind of digital pressure gauge detecting tank pressure | |
| CN202275028U (en) | Water resistance test device for underwater cables | |
| CN207966674U (en) | A kind of novel electric power transformer oil storage measuring oil level using intelligence sensor | |
| CN209910899U (en) | Liquid immersion type leakage monitoring device for power equipment | |
| CN209378735U (en) | Desulfurization absorber tower defogger pressure differential detection system | |
| CN2341141Y (en) | Sealed sampler | |
| CN202302747U (en) | Leakage prevention gas pipeline water drainer | |
| CN219935531U (en) | Pressure pipeline intensity detection mechanism | |
| CN218646398U (en) | Oil tank scale, steering oil tank and vehicle | |
| CN205207664U (en) | Sealed face displacement detectable seal assembly | |
| CN211574792U (en) | Natural gas pipe internal pressure monitor | |
| CN209727377U (en) | Pressure protective device for the test of micro- low pressure | |
| CN205640031U (en) | Ware subassembly is repaired to pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050323 |