CN104280097A - Floating roof tank liquid level measuring device and measurement method using measurement device - Google Patents
Floating roof tank liquid level measuring device and measurement method using measurement device Download PDFInfo
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- CN104280097A CN104280097A CN201310285896.8A CN201310285896A CN104280097A CN 104280097 A CN104280097 A CN 104280097A CN 201310285896 A CN201310285896 A CN 201310285896A CN 104280097 A CN104280097 A CN 104280097A
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- floating roof
- pulley
- liquid level
- flexible
- measuring staff
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Abstract
The invention relates to a floating roof tank liquid level measuring device and a measurement method using the measurement device. The floating roof tank liquid level measuring device comprises a magnetostriction sensor. The magnetostriction sensor is composed of a flexible cable type measurement rod, a magnetic floater, a permanent magnetic ring and a magnetic potential detection electron bin, wherein the flexible cable type measurement rod is sleeved with the permanent magnetic ring and the magnetic floater, the permanent magnetic ring is located above the magnetic floater, and the upper end of the flexible cable type measurement rod is connected with the magnetic potential detection electron bin. The floating roof tank liquid level measuring device further comprises a roller type pulley, the roller type pulley is installed on a tank roof supporting frame, the magnetic potential detection electron bin of the magnetostriction sensor is fixed to the inner side of the roller type pulley, the flexible cable type measurement rod penetrates through a roller type pulley shell and is wound on the roller type pulley, the permanent magnetic ring is horizontally installed on the tank roof supporting frame, the flexible cable type measurement rod perpendicularly penetrates through the permanent magnetic ring, and the bottom end of the flexible cable type measurement rod is fixed to a floating roof of the floating roof tank. The floating roof tank liquid level measuring device further comprises a contraction pulley mechanism which enables the flexible cable type measurement rod wound on the roller type pulley to be stretched straight.
Description
Technical field
The present invention relates to a kind of floating roof tank liquid level emasuring device and utilize the measuring method of this device.
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 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 (> 22mm), 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.In 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, in order to prevent roof fall liquid storage from leaking, tank skin installs the chain alarm switch of liquid level separately, sometimes even separately a radar level gauge is installed, for roof fall level gauging.
Summary of the invention
The object of the invention is the measuring method providing a kind of floating roof tank liquid level emasuring device and utilize this device, and structure is simple, and it is accurate, convenient to measure.
Based on same inventive concept, the present invention has two independently technical schemes:
1, a floating roof tank liquid level emasuring device, floating roof tank tank deck is provided with tank deck support, it is characterized in that:
Comprise magneto strictive sensor, magneto strictive sensor detects electronics storehouse by flexible-cable formula measuring staff, magnetic float, permanent magnet ring and magnetic potential and forms, permanent magnet ring and magnetic float are sleeved on flexible-cable formula measuring staff, and permanent magnet ring is positioned at the top of magnetic float, and the upper termination magnetic potential of flexible-cable formula measuring staff detects electronics storehouse;
Also comprise drum-type pulley, drum-type pulley is arranged on tank deck support, the magnetic potential of magneto strictive sensor detects electronics storehouse and is fixed on inside drum-type pulley, and flexible-cable formula measuring staff is through drum-type pulley housings, and flexible-cable formula measuring staff has part to be around in outside drum-type pulley; The permanent magnet ring of magneto strictive sensor is arranged on tank deck support, and flexible-cable formula measuring staff passes perpendicularly through the fixing permanent magnet ring of level, and bottom and the Floating Roof of Floating Roof Storage Tanks of flexible-cable formula measuring staff are fixed;
Also comprise and tighten up pulley mechanism, tighten up pulley mechanism and make flexible-cable formula measuring staff keep exceptionally straight state.
Preferably, also comprise positioning pulley, positioning pulley is arranged on tank deck support, and positioning pulley is positioned at the top of permanent magnet ring, and flexible-cable formula measuring staff passes perpendicularly through the fixing permanent magnet ring of level by positioning pulley.
Preferably, tighten up pulley mechanism and comprise and the small sheave of drum-type pulley coaxle transmission, movement weight pulley, movement weight pulley walked around by stay cord, and stay cord one termination weight, the stay cord other end is wound on aforesaid small sheave.
Preferably, the bottom of flexible-cable formula measuring staff is provided with draw ring, and the bottom of flexible-cable formula measuring staff is fixed by draw ring and Floating Roof of Floating Roof Storage Tanks.
2, utilize a measuring method for above-mentioned floating roof tank liquid level emasuring device, it is characterized in that: magneto strictive sensor records the displacement of floating roof tank tank deck by permanent magnet ring, thus record floating roof tank liquid level; Liquid level magneto strictive sensor records roof fall liquid level by magnetic float.
The beneficial effect that the present invention has:
Measuring accuracy of the present invention and resolution are all better than radar level gauge.The existing radar level gauge precision for floating roof tank: 0.1%FS, resolution: 1mm; Magneto strictive sensor precision: be better than 0.05%FS, resolution: be better than 1mm, resolution reaches as high as 2 μm.
Structure of the present invention is simple, installs and uses simple and convenient.Existing radar level gauge is when floating roof tank is installed and used, floating roof tank must be provided with and install and measure cylinder specially, on at the bottom of the vertical standing tank of measuring cylinder, height is high higher than tank, require measuring cylinder inner wall smooth impulse-free robustness and fluctuate in process in floating roof with liquid level change in tank, must ensure to be in sealing state around floating roof and measuring cylinder, require that measuring cylinder must keep verticality simultaneously, complex structure, technological requirement is high.The present invention does not need the inner structure employing (variation) floating roof tank, the measuring staff of magnetostrictive liquid level sensor is pierced into the permanent magnet ring be fixed on tank deck shelf, by sensor lower end set collar, sensor measuring staff lower end is fixed on Floating Roof of Floating Roof Storage Tanks, sensor upper end is fixed on drum-type pulley, measure floating roof displacement and reach by being arranged on the combination of tank deck support top sheave and the interlock of floating roof and measure floating roof tank liquid level, simply applicable.
The present invention can survey floating roof tank liquid level and roof fall liquid level simultaneously, separately alarm switch need not be installed, and the existing radar level gauge be arranged on floating roof tank, the liquid level of floating roof tank can only be surveyed, roof fall liquid level can not be monitored, when using radar level gauge, floating roof tank also must install liquid level alarming switch, for the warning of tank roof fall liquid level.Cost of the present invention is low, and the magnetostrictive liquid level sensor low price used, its price is less than the half of existing radar level gauge.Magnetostrictive liquid level sensor used in the present invention can carry out on-line checkingi as required, and to ensure normal operation and measuring accuracy, and existing radar level gauge can not on-line checkingi.
Accompanying drawing explanation
Fig. 1 is the structural representation of liquid level magneto strictive sensor of the present invention;
Fig. 2 is the structural representation of floating roof tank liquid level emasuring device of the present invention;
Fig. 3 is the partial enlarged drawing that liquid level magneto strictive sensor of the present invention is installed on tank deck holder part;
Fig. 4 is the A direction view of Fig. 3.
Embodiment
As shown in Figure 1, magneto strictive sensor detects electronics storehouse 1 by flexible-cable formula measuring staff 4, magnetic float 7, permanent magnet ring 5 and magnetic potential and forms, permanent magnet ring 5 and magnetic float 7 are sleeved on flexible-cable formula measuring staff, and permanent magnet ring is positioned at the top of magnetic float, and the upper termination magnetic potential of flexible-cable formula measuring staff detects electronics storehouse 1.Wherein, magnetic potential detects the signal transmitting device 2 in electronics storehouse 1, the magnetic susceptibility parts 6 on measuring staff form magnetic potential detection mechanism, and magnetic potential detecting signal is exported by sensor signal lines 3.
As shown in figs 2-4, floating roof tank 17 tank deck is provided with support 14, drum-type pulley 9 is arranged on tank deck support 14, the magnetic potential of magnetostrictive liquid level sensor detects the inner side that drum-type pulley 9 is fixed in electronics storehouse 1, flexible-cable formula measuring staff 4 is through drum-type pulley 9 housing, flexible-cable formula measuring staff 4 has part to be around in outside drum-type pulley, and sensor signal lines 3 is drawn from the tubular shaft of pulley; Permanent magnet ring 5 level is arranged on tank deck support 14, and flexible-cable formula measuring staff passes vertically through permanent magnet ring 5, and the bottom of flexible-cable formula measuring staff is fixed by the floating roof 15 of draw ring 8 with floating roof tank 17.Positioning pulley 12 is arranged on tank deck support 14, and positioning pulley 12 is positioned at the top of permanent magnet ring 5, and flexible-cable formula measuring staff 4 passes perpendicularly through permanent magnet ring by positioning pulley.Tank deck support 14 is also provided with and tightens up pulley mechanism, tighten up pulley mechanism to comprise and the small sheave 10 of drum-type pulley coaxle transmission, movement weight pulley 11, movement weight pulley 11 walked around by stay cord 16, stay cord 16 1 termination weight 13, the stay cord other end is wound on aforesaid small sheave 10, oppositely around a few circle, around the number of turns be raised to the highest point of tank than Floating Roof of Floating Roof Storage Tanks 15 from tank lowest part time, corresponding flexible-cable formula measuring staff 4 drum-type pulley 9 around many 2 circles of the number of turns.
Utilize the Action of Gravity Field of weight 13, by combination interlock and the location of the small sheave 10 of drum-type pulley 9, coaxial transmission, movement weight pulley 11 and positioning pulley 12, make flexible-cable formula measuring staff 4 all the time perpendicular to Floating Roof of Floating Roof Storage Tanks 15, be in tension, and flexible-cable formula measuring staff 4 passes perpendicularly through permanent magnet ring 5 center.When Floating Roof of Floating Roof Storage Tanks 15 is with when in tank, liquid level change fluctuates, flexible-cable formula measuring staff 4 moves up and down thereupon, and the relative position of magnetic susceptibility parts 6 and permanent magnet ring 5 changes, and records the displacement of floating roof tank tank deck, thus records floating roof tank liquid level; Magnetic float 7 can fluctuate along measuring staff with the change of roof fall liquid level, realizes the mensuration of roof fall liquid level.
Claims (5)
1. a floating roof tank liquid level emasuring device, floating roof tank tank deck is provided with support, it is characterized in that:
Comprise magneto strictive sensor, magneto strictive sensor detects electronics storehouse by flexible-cable formula measuring staff, magnetic float, permanent magnet ring and magnetic potential and forms, permanent magnet ring and magnetic float are sleeved on flexible-cable formula measuring staff, and permanent magnet ring is positioned at the top of magnetic float, and the upper termination magnetic potential of flexible-cable formula measuring staff detects electronics storehouse;
Also comprise drum-type pulley, drum-type pulley is arranged on tank deck support, and the magnetic potential of magneto strictive sensor detects electronics storehouse and is fixed on inside drum-type pulley, and flexible-cable formula measuring staff is through drum-type pulley housings, and flexible-cable formula measuring staff has part to be around on drum-type pulley; The permanent magnet ring level of magneto strictive sensor is arranged on tank deck support, and flexible-cable formula measuring staff passes perpendicularly through permanent magnet ring, and bottom and the Floating Roof of Floating Roof Storage Tanks of flexible-cable formula measuring staff are fixed;
Also comprise and tighten up pulley mechanism, tighten up the flexible-cable formula measuring staff that pulley mechanism makes drum-type pulley is wound around and keep exceptionally straight state.
2. floating roof tank liquid level emasuring device according to claim 1, it is characterized in that: also comprise positioning pulley, positioning pulley is arranged on tank deck support, and positioning pulley is positioned at the top of permanent magnet ring, and flexible-cable formula measuring staff passes perpendicularly through the permanent magnet ring be horizontally fixed on support by positioning pulley.
3. floating roof tank liquid level emasuring device according to claim 2, it is characterized in that: tighten up pulley mechanism and comprise and the small sheave of drum-type pulley coaxle transmission, movement weight pulley, movement weight pulley walked around by stay cord, and stay cord one termination weight, the stay cord other end is wound on small sheave.
4. floating roof tank liquid level emasuring device according to claim 3, is characterized in that: the bottom of flexible-cable formula measuring staff is provided with draw ring, and the bottom of flexible-cable formula measuring staff is fixed by draw ring and Floating Roof of Floating Roof Storage Tanks.
5. utilize a measuring method for floating roof tank liquid level emasuring device described in claim 1, it is characterized in that: magneto strictive sensor records the displacement of Floating Roof of Floating Roof Storage Tanks by permanent magnet ring, thus record floating roof tank liquid level; Magneto strictive sensor records roof fall liquid level by magnetic float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285896.8A CN104280097A (en) | 2013-07-01 | 2013-07-01 | Floating roof tank liquid level measuring device and measurement method using measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285896.8A CN104280097A (en) | 2013-07-01 | 2013-07-01 | Floating roof tank liquid level measuring device and measurement method using measurement device |
Publications (1)
| Publication Number | Publication Date |
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| CN104280097A true CN104280097A (en) | 2015-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310285896.8A Pending CN104280097A (en) | 2013-07-01 | 2013-07-01 | Floating roof tank liquid level measuring device and measurement method using measurement device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346881A (en) * | 2015-10-21 | 2016-02-24 | 中国石油化工股份有限公司 | Monitoring system for horizontal state of floating disc of outward floating-roof tank |
| CN108046406A (en) * | 2017-12-21 | 2018-05-18 | 江西致远环保技术有限公司 | A kind of sewage disposal system |
| CN110056408A (en) * | 2019-05-23 | 2019-07-26 | 湖南力宇新能源科技有限公司 | Level gauging feedback device and system |
| CN112013929A (en) * | 2020-09-27 | 2020-12-01 | 中国舰船研究设计中心 | Calibration device and method for long-range magnetostrictive liquid level meter of ship oil tank |
-
2013
- 2013-07-01 CN CN201310285896.8A patent/CN104280097A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346881A (en) * | 2015-10-21 | 2016-02-24 | 中国石油化工股份有限公司 | Monitoring system for horizontal state of floating disc of outward floating-roof tank |
| CN108046406A (en) * | 2017-12-21 | 2018-05-18 | 江西致远环保技术有限公司 | A kind of sewage disposal system |
| CN110056408A (en) * | 2019-05-23 | 2019-07-26 | 湖南力宇新能源科技有限公司 | Level gauging feedback device and system |
| CN110056408B (en) * | 2019-05-23 | 2024-03-19 | 湖南力宇环保能源有限公司 | Liquid level measurement feedback device and system |
| CN112013929A (en) * | 2020-09-27 | 2020-12-01 | 中国舰船研究设计中心 | Calibration device and method for long-range magnetostrictive liquid level meter of ship oil tank |
| CN112013929B (en) * | 2020-09-27 | 2023-06-06 | 中国舰船研究设计中心 | Device and method for calibrating long-range magnetostrictive liquid level meter of ship oil tank |
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Application publication date: 20150114 |