CN108680235A - A kind of fluid level transmitter - Google Patents

A kind of fluid level transmitter Download PDF

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Publication number
CN108680235A
CN108680235A CN201810471657.4A CN201810471657A CN108680235A CN 108680235 A CN108680235 A CN 108680235A CN 201810471657 A CN201810471657 A CN 201810471657A CN 108680235 A CN108680235 A CN 108680235A
Authority
CN
China
Prior art keywords
transmitter
sensor
signal
level
fluid level
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.)
Pending
Application number
CN201810471657.4A
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Chinese (zh)
Inventor
柯正涛
柯有玺
俞春祥
邬岳平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANHUI AUTOMATION INSTRUMENT Co Ltd
Original Assignee
ANHUI AUTOMATION INSTRUMENT Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANHUI AUTOMATION INSTRUMENT Co Ltd filed Critical ANHUI AUTOMATION INSTRUMENT Co Ltd
Priority to CN201810471657.4A priority Critical patent/CN108680235A/en
Publication of CN108680235A publication Critical patent/CN108680235A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
    • G01F23/30Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by floats
    • G01F23/64Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by floats of the free float type without mechanical transmission elements
    • G01F23/68Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by floats of the free float type without mechanical transmission elements using electrically actuated indicating means
    • G01F23/70Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by floats of the free float type without mechanical transmission elements using electrically actuated indicating means for sensing changes in level only at discrete points
    • G01F23/706Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by floats of the free float type without mechanical transmission elements using electrically actuated indicating means for sensing changes in level only at discrete points using opto-electrically actuated indicating means

Abstract

The present invention provides a kind of fluid level transmitter, including magnetic float level indicator, the sensor of transmitter is provided on the outside of the main body tube of magnetic float level indicator, sensor is in the same magnetic coupling region of magnetic float level indicator, by the magnetic fields of the magnet steel in magnetic float level indicator from being attracted, tongue tube is connected on signaling conversion circuit tongue tube in sensor.The solution of the present invention makes the liquid level gauge signal of pick-up more directly and accurate, convenient for computer centralized displaying or automatically controls, and realization detects and controls liquid level at a distance.

Description

A kind of fluid level transmitter
Technical field
The present invention relates to liquid levels remote control equipment technical fields, and in particular to a kind of fluid level transmitter.
Background technology
The fields such as petrochemical industry measure the liquid level of liquid in containers medium frequently with liquid level gauge.The type of liquid level gauge has tuning fork Oscillatory type, maglev type, pressure type, ultrasonic wave, sonar wave, magnetic turning plate and radar etc..Wherein, magnetic floating liquid level gauge is mainly used in Liquid level in the fields such as PETROLEUM PROCESSING, food processing, chemical industry, water process, pharmacy, electric power, papermaking, metallurgy, ship and boiler is surveyed Amount.Magnetic float liquidlevel meter has top dress floating ball lever meter and side dress floating ball lever meter, remote liquid level transmitter can be prepared, to realize The D/A of liquid level signal teletransmission is shown.
Fluid level transmitter is divided into throw-in type, straight-bar type, flange form, screw-type, inductance type, screw-in, float-ball type, installation Simple easy to use, high sensitivity, response is fast, and accuracy of measurement is high;The operation principle of fluid level transmitter works as measured medium Two kinds of pressure are passed through two balancing gate pits of height, act on the both sides isolation diaphragm of sensing element, by isolation diaphragm and element Filling liquid be transmitted to measuring diaphragm both sides;The transformation of various level parameters can be converted into normalized current letter by fluid level transmitter Number, teletransmission to control room for computer centralized displaying or automatically controls, the detection control being widely used in various industrial process System.
But when for longer range level gauging, under normal circumstances frequently with segmentation fluid level transmitter;For example, for longer The liquid level gauge of range installs individual fluid level transmitter, each level transmitting respectively on the top, middle part and lower part of liquid level gauge Respectively the current signal of input 4-20mA, control display system connected to it will receive three measurement results to device respectively, due to Three measurement results are relatively independent, cannot continuously monitor the signal for showing entire liquid level gauge, and use is very inconvenient, and it is accurate to measure Degree is also relatively poor.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of fluid level transmitter, the deficiencies in the prior art are overcome, are made The more accurate intelligence of liquid level gauge signal for obtaining pick-up, convenient for computer centralized displaying or automatically controls, liquid level is examined in realization at a distance It surveys and controls so that measure simpler more reliable.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:
A kind of fluid level transmitter, including magnetic float level indicator, the main body tube outside setting of the magnetic float level indicator There is the sensor of transmitter, the sensor is in the same magnetic coupling region of magnetic float level indicator, in the sensor Tongue tube by the magnetic fields of the magnet steel in magnetic float level indicator from being attracted, the tongue tube is connected to signal conversion electricity On the road.
The resistance signal of the signaling conversion circuit conversion is handled by electron-amplifier, is converted into the 4-20mA of two-wire system Signal output, the 4-20mA signal output directly inputs electrodynamic element instrument for realizing telemetering, alarm and control.
The signaling conversion circuit is arranged in explosion-proof type terminal box.
Pickup signal at the tongue tube is connected on liquid-level-adjustable controller.
The sensor is photoelectric level signal transducer, the sense that the photoelectric level signal transducer passes through lightwave signal The variation of liquid level position is answered to be converted into electric signal output.
(3) advantageous effect
An embodiment of the present invention provides a kind of fluid level transmitters.Has following advantageous effect:Electricity is connected to using tongue tube The form sensor of road replaces passing the form for leading to floating ball transmission signal, and liquid level variable signal can be allow directly to be transformed to Then electric signal is directly connected on Computer signal input circuit by translation circuit for computer centralized displaying or automatic control System, realization detect and control liquid level at a distance so that measure simpler more reliable.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of heretofore described fluid level transmitter;
Fig. 2 is the schematic diagram of signaling conversion circuit of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Refering to fig. 1 to shown in Fig. 2, the present invention provides a kind of fluid level transmitter, including magnetic float level indicator 1, and magnetism is floating 2 outside of main body tube of sub- liquid level gauge 1 is provided with the sensor 3 of transmitter, and sensor 3 is in the same of magnetic float level indicator 1 In magnetic coupling region, the tongue tube 4 in sensor 3, from being attracted, is done by the magnetic fields of the magnet steel in magnetic float level indicator 1 Reed pipe 4 is connected on signaling conversion circuit.
Since the sensor 3 of transmitter is partially in the same magnetic couplings system of magnetic float level indicator, sensing is utilized Tongue tube actuation effect in magnet steel magnetic field in by magnetic float component in device, resistance signal output is converted to by the variation of liquid level, The signal can be directly used cooperatively with instrument, realize remote survey and control.
Preferably, the resistance signal of signaling conversion circuit conversion is handled by electron-amplifier, is converted into the 4- of two-wire system The signal of 20mA exports, and the signal output of 4-20mA directly inputs electrodynamic element instrument for realizing telemetering, alarm and control, uses Magnet steel is at the zero mark of transmitter, and output at this time should be 4mA signals, when magnet steel is placed in full scale mark, this When output should be 20mA, similarly the corresponding electric signal of corresponding height display, can make to match corresponding liquid level signal in this way, more just In detection and transmission, for telemetering, controlling alarm;Signaling conversion circuit be arranged in explosion-proof type terminal box 5 so as to circuit into Row protection so that the conversion of signaling conversion circuit is more stable;Pickup signal at tongue tube is connected to liquid-level-adjustable controller 6 On, electric signal is converted to for directly adjusting liquid-level-adjustable controller by pickup signal so that regulative mode is more direct, signal Distortion rate is lower;Sensor is photoelectric level signal transducer, the induction liquid that photoelectric level signal transducer passes through lightwave signal The variation of face position is converted into electric signal output, can be used for detecting some in this way and has magnetic liquid, prevents magnet steel equimagnetic The magnetization of property object.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although with reference to the foregoing embodiments Invention is explained in detail, it will be understood by those of ordinary skill in the art that:It still can be to aforementioned each implementation Technical solution recorded in example is modified or equivalent replacement of some of the technical features;And these modification or It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.

Claims (5)

1. a kind of fluid level transmitter, it is characterised in that:Including magnetic float level indicator, the main body tube of the magnetic float level indicator Outside is provided with the sensor of transmitter, and the sensor is in the same magnetic coupling region of magnetic float level indicator, described For tongue tube in sensor by the magnetic fields of the magnet steel in magnetic float level indicator from being attracted, the tongue tube is connected to letter On number conversion circuit.
2. fluid level transmitter as described in claim 1, it is characterised in that:The resistance signal warp of the signaling conversion circuit conversion Electron-amplifier processing is crossed, the signal output of the 4-20mA of two-wire system is converted into, the signal output of the 4-20mA directly inputs Electrodynamic element instrument is for realizing telemetering, alarm and control.
3. fluid level transmitter as described in claim 1, it is characterised in that:The signaling conversion circuit is arranged in explosion-proof type wiring In box.
4. fluid level transmitter as described in claim 1, it is characterised in that:Pickup signal at the tongue tube is connected to adjustable On fluid level controller.
5. fluid level transmitter as described in claim 1, it is characterised in that:The sensor is photoelectric level signal transducer, The photoelectric level signal transducer is converted into electric signal output by the variation of the induction liquid level position of lightwave signal.
CN201810471657.4A 2018-05-17 2018-05-17 A kind of fluid level transmitter Pending CN108680235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810471657.4A CN108680235A (en) 2018-05-17 2018-05-17 A kind of fluid level transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810471657.4A CN108680235A (en) 2018-05-17 2018-05-17 A kind of fluid level transmitter

Publications (1)

Publication Number Publication Date
CN108680235A true CN108680235A (en) 2018-10-19

Family

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Family Applications (1)

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CN201810471657.4A Pending CN108680235A (en) 2018-05-17 2018-05-17 A kind of fluid level transmitter

Country Status (1)

Country Link
CN (1) CN108680235A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110132378A (en) * 2019-06-12 2019-08-16 海丰通航科技有限公司 Resistance-type flexibility liquid level sensor and its application

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5829303A (en) * 1996-06-19 1998-11-03 Fraser; George David Method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float
CN2344759Y (en) * 1998-09-15 1999-10-20 湖南株洲化工集团有限责任公司 Magnetic liquid level gauge
CN202229817U (en) * 2011-09-01 2012-05-23 大连美天三有电子仪表有限公司 Liquid level meter with magnetic floater
CN205373826U (en) * 2016-01-20 2016-07-06 山西晶力园科技有限公司 Liquid level device
CN205843771U (en) * 2016-05-09 2016-12-28 启东市恒盛仪表设备有限公司 A kind of cluster remote transmitter
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5829303A (en) * 1996-06-19 1998-11-03 Fraser; George David Method and apparatus for measuring a liquid level using a liquid level gauge having reed switches to determine the position of a magnetic float
CN2344759Y (en) * 1998-09-15 1999-10-20 湖南株洲化工集团有限责任公司 Magnetic liquid level gauge
CN202229817U (en) * 2011-09-01 2012-05-23 大连美天三有电子仪表有限公司 Liquid level meter with magnetic floater
CN205373826U (en) * 2016-01-20 2016-07-06 山西晶力园科技有限公司 Liquid level device
CN205843771U (en) * 2016-05-09 2016-12-28 启东市恒盛仪表设备有限公司 A kind of cluster remote transmitter
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110132378A (en) * 2019-06-12 2019-08-16 海丰通航科技有限公司 Resistance-type flexibility liquid level sensor and its application

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Application publication date: 20181019