CN104422497A - Magnetic-induced telescoping sensor for measuring level of cleaning liquid of floating roof tank and mounting and operation method - Google Patents
Magnetic-induced telescoping sensor for measuring level of cleaning liquid of floating roof tank and mounting and operation method Download PDFInfo
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- CN104422497A CN104422497A CN201310367259.5A CN201310367259A CN104422497A CN 104422497 A CN104422497 A CN 104422497A CN 201310367259 A CN201310367259 A CN 201310367259A CN 104422497 A CN104422497 A CN 104422497A
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- floating roof
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Abstract
The invention relates to a magnetic-induced telescoping sensor for measuring the level of cleaning liquid of a floating roof tank and a mounting and operation method of the magnetic-inducted telescoping sensor. The magnetic-induced telescoping sensor comprises a detecting rod, a magnetic float and a magnetic potential detecting mechanism; the magnetic potential detecting mechanism comprises a signal transformer and a magnetic sensitive part, wherein the signal transformer is positioned in an electronic bin which is arranged above the detecting rod. The magnetic-induced telescoping sensor is characterized in that a mounting flange is arranged at the outer side of the middle part of the detecting rod; an upper magnetic float and a lower magnetic float are mounted on the detecting rod and are respectively positioned above and below the mounting flange. According to the magnetic-induced telescoping sensor and the mounting and operation method, the detecting rod passes through a flange seat of a floating roof of the floating roof tank, and the mounting flange is in sealing connection with the flange seat; the upper magnetic float is used for measuring the roof caving level of the floating roof tank, and the lower magnetic float is used for measuring the level of cleaning liquid.
Description
Technical field
The present invention relates to a kind of magneto strictive sensor for measuring the clear tank liquid level of floating roof tank and installation and application thereof.
Background technology
Floating roof tank mostly stores for product oil, and its volume is very large (such as: volume 50,000 m
3tank, diameter 60m, high 22m; Volume 100,000 m
3tank, diameter 80m, high 22m), owing to storing for product oil, therefore require high to the measuring accuracy of liquid level and Measurement Resolution.
In prior art, floating roof tank level gauging mostly adopts radar level gauge, in actual application, radar level gauge is arranged on floating roof hollow guiding capital end, and guidepost is arranged at the bottom of tank and is fixed on tank skin, in order to keep liquid level in guidepost consistent with tank liquid level, guiding post jamb evenly has a series of hole from top to bottom, for ensureing that radar level gauge is normally measured and measuring accuracy, requiring guidepost inner wall smooth impulse-free robustness, its verticality must be kept simultaneously.Due to guidepost very high (>22m), run round the clock, tank skin distortion or tank base sedimentation all can affect guidepost verticality, and therefore tank manufacturing structure is complicated, and technological requirement is high throughout the year.
The devices such as liquid in-out pipeline, heat tracing pipe are had due to floating roof tank inner bottom part, the pillar of some 1.8 meters high is provided with at the bottom of tank in floating roof tank, when floating roof is reduced to 1.8 meters with liquid level in tank, support floating roof due to pillar can not decline with liquid level again and float downward, and radar level gauge accurately cannot measure clear tank liquid level now; In floating roof tank operational process, due to reasons such as floating plate (top) block, sometimes there is roof fall in floating roof tank, because radar level gauge can only survey a liquid level signal simultaneously, during practical application, for preventing roof fall liquid storage from leaking, tank skin is provided with separately the chain alarm switch of liquid level, sometimes even separately a radar level gauge is installed, for roof fall level gauging.
Summary of the invention
The object of the invention is to provide a kind of magneto strictive sensor for measuring the clear tank liquid level of floating roof tank and installation and application thereof, can either the clear tank liquid level of Measurement accuracy floating roof tank, can measure roof fall liquid level again.
Based on same inventive concept, the present invention has two independently technical schemes:
1, a kind of magneto strictive sensor for measuring the clear tank liquid level of floating roof tank, comprise measuring staff, magnetic float and magnetic potential detection mechanism, wherein magnetic potential detection mechanism comprises signal transmitting device and magnetic susceptibility parts, signal transmitting device is positioned at electronics storehouse, electronics position in storehouse is in the top of measuring staff, it is characterized in that: be provided with mounting flange outside the middle part of measuring staff, measuring staff is provided with magnetic float and lower magnetic float, upper magnetic float and lower magnetic float lay respectively at above and below aforementioned mounting flange.
The signal output cable of signal transmitting device is spiral scalable cable.
Mounting flange and measuring staff are tightly connected.
2, an above-mentioned magneto strictive sensor installation and application for measuring the clear tank liquid level of floating roof tank, is characterized in that: flange seat measuring staff being pierced into Floating Roof of Floating Roof Storage Tanks, mounting flange and flange seat is tightly connected; Upper magnetic float is for measuring the clear tank liquid level of floating roof tank, and lower magnetic float is for measuring roof fall liquid level.
Measuring staff is vertical with Floating Roof of Floating Roof Storage Tanks.
The beneficial effect that the present invention has:
Mounting flange is provided with outside the middle part of sensor measuring staff of the present invention, the flange seat of mounting flange and Floating Roof of Floating Roof Storage Tanks is tightly connected, measuring staff is provided with magnetic float and lower magnetic float, upper magnetic float and lower magnetic float lay respectively at above and below aforementioned mounting flange, upper magnetic float is for measuring floating roof tank roof fall liquid level, and lower magnetic float is for measuring clear tank liquid level.
The measuring accuracy of magnetostrictive liquid level sensor of the present invention and resolution are all better than existing radar level gauge.Existing radar level gauge measuring accuracy: 0.1%Fs (full scale), resolution: 1mm.The full scale of the radar level gauge of floating roof tank at least >=22m (tank height 22m), calculate by 22m, its measuring accuracy 0.1% × 22m, the highest 1.8m of only having of the clear tank liquid level of floating roof tank (support leg at the bottom of tank is 1.8 meters), due to radar level gauge measuring accuracy: 0.1%Fs, range >=22m, radar level gauge measures the clear tank liquid level of below 1.8m, error is very large, can not meet the requirement of floating roof tank clear tank liquid level high-acruracy survey at all.And magnetostrictive liquid level sensor of the present invention is arranged in floating roof, range is 1.8m to the maximum, its precision 0.05%Fs, i.e. 0.05% × 1.8m, and therefore measuring error is very little, meets floating roof tank clear tank liquid level high-precision requirement completely.
The existing radar level be arranged on floating roof tank is exposed sb.'s past misdeeds, and can only survey the liquid level of floating roof tank, can not monitor roof fall liquid level,
Use radar level timing, floating roof tank also must install liquid level alarming switch, for the warning of tank roof fall liquid level.The present invention can measure the roof fall liquid level of floating roof tank simultaneously, need not install alarm switch separately.
In floating roof tank operational process, in order to ensure that liquid level gauge normally runs and measuring accuracy, usually require regularly to detect liquid level gauge, radar level gauge can not on-line checkingi, and sensor of the present invention can carry out on-line checkingi as required at any time.
Accompanying drawing explanation
Fig. 1 is that the present invention is for measuring the sensor construction schematic diagram of the clear tank liquid level of floating roof tank;
Fig. 2 is schematic diagram sensor being installed on Floating Roof of Floating Roof Storage Tanks.
Embodiment
As shown in Figure 1, sensor comprises measuring staff 4, magnetic float and magnetic potential detection mechanism, wherein magnetic potential detection mechanism comprises signal transmitting device 2 and magnetic susceptibility parts 5, signal transmitting device 2 is positioned at electronics storehouse 1, electronics storehouse 1 is positioned at the top of measuring staff 4, be provided with mounting flange 9 outside the middle part of measuring staff 4, mounting flange 9 and measuring staff 4 are tightly connected.Measuring staff 4 is provided with magnetic float 6 and lower magnetic float 7, upper magnetic float 6 and lower magnetic float 7 lay respectively at above and below aforementioned mounting flange 9, are provided with baffle ring 8 bottom measuring staff.The signal output cable 3 of signal transmitting device is spiral scalable cable.
During sensor assembling, first upper magnetic float 6 is entered measuring staff 4 from measuring staff bottom headgear, then by mounting flange 9, be tightly connected by screw thread and measuring staff 4, then from measuring staff 4 bottom head, lower magnetic float 7 is packed into, set up the baffle ring 8 of sensor bottom, complete sensor assembling.
As shown in Figure 2, when installing and using, measuring staff is pierced into the flange seat 12 in floating roof tank 13 floating roof 10, by the mounting hole of the mounting flange 9 mounting hole alignment flange seat 12 on measuring staff, sealing gasket on pad, tightens set bolt, and mounting flange 9 and flange seat 12 are tightly connected, sensor vertical is inserted in tank, thus completes the installation of sensor in floating roof.
When in floating roof tank, liquid level is lower than pillar 11, namely during clear tank, lower magnetic float 7 floats along measuring staff 4 along with liquid level change in tank, and sensor then accurately measures clear tank liquid level.When the accident of meeting accident, as floating plate (floating roof) 10 block time, occur roof fall, upper magnetic float 6 floats along measuring staff 4, records roof fall liquid level.
Claims (6)
1. one kind for measuring the magneto strictive sensor of the clear tank liquid level of floating roof tank, comprise measuring staff, magnetic float and magnetic potential detection mechanism, wherein magnetic potential detection mechanism comprises signal transmitting device and magnetic susceptibility parts, signal transmitting device is positioned at electronics storehouse, electronics position in storehouse is in the top of measuring staff, it is characterized in that: be provided with mounting flange outside the middle part of measuring staff, measuring staff is provided with magnetic float and lower magnetic float, upper magnetic float and lower magnetic float lay respectively at above and below mounting flange.
2. the clear tank magnetostrictive liquid level sensor of floating roof tank according to claim 1, is characterized in that: the mounting flange of sensor is positioned in the middle part of measuring staff, measuring staff is divided into upper and lower two sections.
3. the clear tank magnetostrictive liquid level sensor of floating roof tank according to claim 1, is characterized in that: measuring staff two sections overlap respectively magnetic float, and clear tank liquid level measured by lower magnetic float, and upper magnetic float is for measuring roof fall liquid level.
4. the clear tank magnetostrictive liquid level sensor of floating roof tank according to claim 1, is characterized in that: the signal cable of signal transmitting device is spiral scalable cable.
5. described in claim 1 for measuring a magneto strictive sensor installation and application for the clear tank liquid level of floating roof tank, it is characterized in that: flange seat measuring staff being pierced into Floating Roof of Floating Roof Storage Tanks, mounting flange and flange seat be tightly connected.
6. installation and application according to claim 4, is characterized in that: measuring staff is vertical with Floating Roof of Floating Roof Storage Tanks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367259.5A CN104422497A (en) | 2013-08-19 | 2013-08-19 | Magnetic-induced telescoping sensor for measuring level of cleaning liquid of floating roof tank and mounting and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367259.5A CN104422497A (en) | 2013-08-19 | 2013-08-19 | Magnetic-induced telescoping sensor for measuring level of cleaning liquid of floating roof tank and mounting and operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104422497A true CN104422497A (en) | 2015-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310367259.5A Pending CN104422497A (en) | 2013-08-19 | 2013-08-19 | Magnetic-induced telescoping sensor for measuring level of cleaning liquid of floating roof tank and mounting and operation method |
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| Country | Link |
|---|---|
| CN (1) | CN104422497A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017617A (en) * | 2016-05-31 | 2016-10-12 | 大庆市镁华仪仪表衡器有限公司 | Magnetic effect liquid level meter |
| CN110375829A (en) * | 2019-08-08 | 2019-10-25 | 范序政 | The method that a DN80 flange hole installs two diameter 75mm magnetic float liquid level sensors on container |
-
2013
- 2013-08-19 CN CN201310367259.5A patent/CN104422497A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017617A (en) * | 2016-05-31 | 2016-10-12 | 大庆市镁华仪仪表衡器有限公司 | Magnetic effect liquid level meter |
| CN110375829A (en) * | 2019-08-08 | 2019-10-25 | 范序政 | The method that a DN80 flange hole installs two diameter 75mm magnetic float liquid level sensors on container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |
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| WD01 | Invention patent application deemed withdrawn after publication |