CN202693077U - Storage tank interface instrument - Google Patents

Storage tank interface instrument Download PDF

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Publication number
CN202693077U
CN202693077U CN 201220246804 CN201220246804U CN202693077U CN 202693077 U CN202693077 U CN 202693077U CN 201220246804 CN201220246804 CN 201220246804 CN 201220246804 U CN201220246804 U CN 201220246804U CN 202693077 U CN202693077 U CN 202693077U
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CN
China
Prior art keywords
storage tank
ultrasonic probe
measurement
interface instrument
interface
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
Application number
CN 201220246804
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Chinese (zh)
Inventor
孙清源
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.)
KELINSHENG (BEIJING) TECHNOLOGY Co Ltd
Original Assignee
KELINSHENG (BEIJING) TECHNOLOGY 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.)
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Priority to CN 201220246804 priority Critical patent/CN202693077U/en
Application granted granted Critical
Publication of CN202693077U publication Critical patent/CN202693077U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a storage tank interface instrument which is used for height measurement of liquid which is obviously layered in a storage tank after precipitation. The instrument comprises an ultrasonic probe, a measurement module and a display module. The measurement module is respectively connected with the ultrasonic probe and the display module. The ultrasonic probe is arranged at the bottom of the storage tank and used for transmitting ultrasonic beams to the layered liquid stored in the storage tank and receiving reflection sound waves reflected by different layers of the layered liquid. The storage tank interface instrument overcomes energy loss of the steel wall by bonding the ultrasonic probe to the bottom of the storage tank, conducts analysis and judgment according to signal transmission attenuation of the ultrasonic signals in a water layer, and achieves oil water interface measurement of the storage tank by combining the time difference method without shutdown and pressure release. The instrument can be replaced at any time even if fault occurs, and effects of bonding on measurement cannot happen due to non-contact measurement. The storage tank interface instrument is accurate in measurement, only detects a water layer and provides accurate parameter for automatic water cutting valves. The emulsion layer cannot be discharged mistakenly.

Description

A kind of storage tank interface instrument
Technical field
The utility model relates to the measurement mechanism technical field, says more specifically, relates to a kind of storage tank interface instrument.
Background technology
The traditional interface instrument mainly contains sectional type capacitive interface instrument and radio frequency admittance formula interface instrument, and the interface instrument of sectional type electric capacity is by being inserted into the rod-type electric capacity in the tank, and is different according to the specific inductive capacity of oil, emulsion layer, water, realizes the detection of tank inner boundary.This product is at present at field use one of product the most widely, and it is with the obvious advantage, mainly is that principle is simple, can be suitable for the detection demand of different application environment, can also detect the thickness of emulsion layer under ideal situation comparatively.But in application process, also there is open defect, the one, this instrument is the contact type measurement mode, at impurity such as bar bonding sulfide, causes measurement inaccurate easily; The 2nd, change to safeguard comparatively trouble, particularly for the closed pressure vessel, can only stop production to overhaul in case instrument failure occurs, must bring very large impact to produced on-site, cause extra economic loss; The 3rd, measuring accuracy is not high, particularly is easy to emulsion layer is worked as water to ejecting when the liquid water content in the emulsion layer changes, and has increased intractability for follow-up production technology.
Radio frequency admittance formula interface instrument is the principle according to the non-conductive water layer conduction of oil reservoir, radiofrequency signal is analyzed the realization interface in the attenuation of water layer signal to be detected, generally be to install in the tank deck perforate during apparatus installation, be generally and guarantee that the measurement reliability also needs the admittance bar is inserted in the tank.The radio frequency admittance formula can realize non-contact measurement, has avoided the oil product bonding to cause the situation of instrument failure.This product also has certain application at present in the oil field, but its shortcoming also is apparent, owing to generally can produce mist of oil owing to need to heat in the seal-off pressure container tank, signal can be subject to obvious impact when frequency microwave was propagated in mist of oil, this signal is larger by measuring error after oil reservoir and the water layer decay again, can't realize Measurement accuracy.Mist of oil also can form the measurement performance that coagulum affects instrument on the surface of instrument in addition.Certainly, this mode also exists to break down needs the situation of storage tank stopping production unloading pressuring maintenance.
The utility model content
The technical problems to be solved in the utility model provides a kind of storage tank interface instrument, to overcome defective of the prior art.
For achieving the above object, the technical solution of the utility model provides a kind of storage tank interface instrument, and the height that can occur the liquid of obvious layering after being used for precipitating in the storage tank is measured, and comprises ultrasonic probe, measurement module and display module; Described measurement module is connected with display module with described ultrasonic probe respectively;
Described ultrasonic probe is arranged on the bottom of described storage tank, and the stratified liquid that is used for storing in described storage tank is launched ultrasound beamformer, and receives from the reflective sound wave of described stratified liquid different aspects reflection;
Described measurement module is used for obtaining according to the reflective sound wave that described ultrasonic probe receives the height of described stratified liquid water layer;
Described display module is used for showing the height of the water layer that described measurement module obtains.
Described ultrasonic probe be arranged on described tank bottom away from tank at the bottom of the position of inlet.
Described ultrasonic probe is arranged on described tank bottom away from tank deck inlet lower position.
Described ultrasonic probe sticks with glue and is fixed on described tank bottom, ultrasonic probe point to must with range finding from same straight line.
Described ultrasonic probe is fixed on described tank bottom with support.
When described storage tank was ferrimagnet, described ultrasonic probe directly was adsorbed on described tank bottom with magnetic chuck.
The operative end surface of described ultrasonic probe scribbles silicone grease.
Described storage tank interface instrument also comprises the simulation output interface, is used for output 4~20mA current signal.
Described storage tank interface instrument also comprises the RS-485 communication interface for the output measurement result.
Compared with prior art, the utility model has the advantage of: by ultrasonic probe is attached to tank bottom, overcome the energy loss of steel wall, signal propagation attenuation analysis in water layer is judged according to ultrasonic signal, realize the water-oil interface measurement of storage tank in conjunction with time difference method, do not need the release that stops production, even breaking down, instrument also can change at any time, non-contact measurement, the situation impact measurements such as bonding can not occur, accurately measure, only detect water layer, emulsion layer can not misprinted, and can provide accurately parameter for the automatic cut-off water valve door.
Description of drawings
Fig. 1 is the use view of a kind of storage tank interface instrument of the present utility model;
Fig. 2 is that the another kind of storage tank interface instrument of the present utility model uses view;
Fig. 3 is that the another kind of storage tank interface instrument of the present utility model uses view.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
The structure of a kind of storage tank interface instrument of the present utility model the height measurement of the liquid of obvious layering occurs as shown in Figure 1 to Figure 3 for meeting after the precipitation in the storage tank, comprise ultrasonic probe 1, measurement module 3 and display module; Described measurement module 3 is connected with display module with described ultrasonic probe 1 respectively;
Described ultrasonic probe 1 is arranged on the bottom of described storage tank 2, is used for the stratified liquid emission ultrasound beamformer to described storage tank 2 interior storages, and receives from the reflective sound wave of described stratified liquid different aspects reflection;
Described measurement module 3 is used for obtaining according to the reflective sound wave that described ultrasonic probe receives the height of described stratified liquid water layer;
Described display module is used for showing the height of the water layer that described measurement module 3 obtains.
Described ultrasonic probe 1 is arranged on 2 positions away from inlet at the bottom of the tank of described bottom of storage tank.
Described ultrasonic probe 1 is arranged on 2 ones of described bottom of storage tanks away from tank deck inlet lower position.
Described ultrasonic probe 1 sticks with glue and is fixed on described storage tank 2 bottoms.
Described ultrasonic probe 1 usefulness support is fixed on described storage tank 2 bottoms.
When described storage tank 2 was ferrimagnet, described ultrasonic probe 1 usefulness magnetic chuck directly was adsorbed on described storage tank 2 bottoms.
When ultrasonic probe 1 usefulness magnetic or weldering/bonding fixed form was installed, the installation surface size on storage tank 2 walls should be not less than the disc of Φ 100mm, and surfaceness should reach 1.6.
The operative end surface of described ultrasonic probe 1 scribbles silicone grease.
Described storage tank interface instrument also comprises the simulation output interface, is used for output 4~20mA current signal.
Described storage tank interface instrument also comprises the RS-485 communication interface for the output measurement result.
In the oil field enclosed storage tank, generally can form several interfaces such as oil reservoir, emulsion layer, water layer and silt seam, and acoustic signals has obvious signal attenuation variation in different aspects, and have part signal and produce reflection, adopted ultrasonic echo ranging principle, the combined digital signal treatment technology is realized the level measuring of storage tank.Overcome the impact of tank wall and silt seam, be transmitted to greatest extent hyperacoustic energy in the tank; Because the acoustic impedance of water layer and emulsion layer is comparatively approaching, therefore the acoustical signal reflected energy is less, signal characteristic is not obvious, needs to realize by the acoustical signal Processing Algorithm of series of complex extraction, judgement and the calculating of signal, thereby realizes the interface in the high-precision non-cpntact measurement tank.
The utility model is in conjunction with on-the-spot actual, and the liquid level numerical value after having realized processing is accurate, need not CPU and performs an analysis, compares, judges.The in addition exportable 4~20mA standard signal of instrument or export measurement result to host computer (or secondary instrument) by the RS-485 interface.
Products characteristics: precision is high, be quick on the draw.The measuring accuracy of instrument can reach the 1mm magnitude, can provide accurately data foundation for automatic water-cutting system, and the inquiry of historical data of storage tank can also be provided as required, records the situation that discharges water of this closed container, improves the automatization level of production management.
External labeling type is installed, and can change at any time when breaking down, and does not need the release that stops production, and has avoided the possibility of the improper maintenance that may exist in the application process; And can not be subjected to the impact that material changes in the tank, after the tank inner aqueous layer forms, get final product Measurement accuracy, not with tank in material come in contact the existence of also having avoided the problems such as bonding.
Instrument does not need periodic calibrating, is full electronic, does not have the rapid wear situations such as mechanical part, does not need manual maintenance fully.
Existing in Intelligent Instruments can be adjusted measurement parameter automatically according to the deposition conditions of mud, and the measuring equipment and the analysis software that are aided with specialty can also detect the interior silting situation of tank, provide accurately basis for estimation for whether storage tank stops production to remove contamination.Short-range accurate measurement can also be provided as required, and measuring accuracy can reach 0.1mm, and whether fasten for the valve of automatic water-cutting system can provide basis for estimation.If system receive after the order of valve-off at short notice level fluctuation surpass 0.1mm can the output alarm prompting, solved the monitoring problem of user of service to the automatic water-stopping valve.
Range specification: 3m, 5m, 10m, 15m; Display resolution: 1mm; Short time repeatability: 1mm; Migration amount: ± 10m; Liquid crystal display shows: 6 LCD; Power supply: 24VDC, ± 15%, 1.5W; Connection type adopts four-wire system (two power leads, two signal wires); Interface simulation output: 4~20mA, maximum load 750 Ω communication interface: RS-485; Shell mechanism: cast aluminium; Degree of protection: IP65; Explosion-proof sign: ExdIIBT6.
Environmental baseline: main frame environment for use temperature :-40 ℃~+ 70 ℃; Ultrasonic probe environment for use temperature :-50 ℃~+ 100 ℃; Humidity: 15%~100%RH;
The tested container material: storage tank 2 walls that ultrasonic probe 1 place is installed require to make with hard material that can the good communication signal, for example: material or its compound substances such as carbon steel, stainless steel, various hard metal, fiberglass, epoxy resin, rigid plastic, pottery, glass, rubberite; If the tank wall multilayer material at ultrasonic probe place is installed, then interlayer is answered close contact, and without bubble or gas interlayer, the surfaces externally and internally of this chamber wall should be smooth, for example: sulfuration rubberite lining, epoxy resin lining, stainless steel lining, titanium lining.Storage tank wall thickness: 2~40mm; Storage tank can be spherical tank, sleeping tank, groove tank, vertical tank etc.
The utility model is by being attached to tank bottom with ultrasonic probe, overcome the energy loss of steel wall, the signal propagation attenuation analysis in water layer is judged according to ultrasonic signal, realizes that in conjunction with time difference method the water-oil interface of storage tank are measured, do not need the release that stops production, can change at any time even instrument breaks down, the situation impact measurements such as bonding can not appear in non-contact measurement yet, accurately measure, only detect water layer, emulsion layer can not misprinted, and can provide accurately parameter for the automatic cut-off water valve door.
The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (9)

1. the height measurement of the liquid of obvious layering appears in a storage tank interface instrument for meeting after the precipitation in the storage tank, it is characterized in that, comprises ultrasonic probe, measurement module and display module; Described measurement module is connected with display module with described ultrasonic probe respectively;
Described ultrasonic probe is arranged on the bottom of described storage tank, and the stratified liquid that is used for storing in described storage tank is launched ultrasound beamformer, and receives from the reflective sound wave of described stratified liquid different aspects reflection;
Described measurement module is used for obtaining according to the reflective sound wave that described ultrasonic probe receives the height of described stratified liquid water layer;
Described display module is used for showing the height of the water layer that described measurement module obtains.
2. storage tank interface instrument according to claim 1 is characterized in that, described ultrasonic probe be arranged on described tank bottom away from tank at the bottom of the position of inlet.
3. storage tank interface instrument according to claim 2 is characterized in that, described ultrasonic probe is arranged on described tank bottom away from tank deck inlet lower position.
4. storage tank interface instrument according to claim 3 is characterized in that, described ultrasonic probe sticks with glue and is fixed on described tank bottom.
5. storage tank interface instrument according to claim 3 is characterized in that, described ultrasonic probe is fixed on described tank bottom with support.
6. storage tank interface instrument according to claim 3 is characterized in that, when described storage tank was ferrimagnet, described ultrasonic probe directly was adsorbed on described tank bottom with magnetic chuck.
7. storage tank interface instrument according to claim 6 is characterized in that, the operative end surface of described ultrasonic probe scribbles silicone grease.
8. according to claim 1 to 7 each described storage tank interface instruments, it is characterized in that described storage tank interface instrument also comprises the simulation output interface, be used for output 4~20mA current signal.
9. according to claim 1 to 7 each described storage tank interface instruments, it is characterized in that described storage tank interface instrument also comprises the RS-485 communication interface for the output measurement result.
CN 201220246804 2012-05-28 2012-05-28 Storage tank interface instrument Expired - Fee Related CN202693077U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220246804 CN202693077U (en) 2012-05-28 2012-05-28 Storage tank interface instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220246804 CN202693077U (en) 2012-05-28 2012-05-28 Storage tank interface instrument

Publications (1)

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CN202693077U true CN202693077U (en) 2013-01-23

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103231878A (en) * 2013-04-28 2013-08-07 南京工业大学 Automatic oil tank water draining system
CN104198015A (en) * 2014-09-05 2014-12-10 陕西声科电子科技有限公司 Two-wire system externally-pasted-type liquid level meter
CN105181069A (en) * 2015-09-01 2015-12-23 深圳麦开网络技术有限公司 Inside-container liquid volume measuring method and device based on acoustic detection
CN105571683A (en) * 2016-01-15 2016-05-11 上海海纳通物联网科技有限公司 External patch type capacitance liquid level gage and use method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103231878A (en) * 2013-04-28 2013-08-07 南京工业大学 Automatic oil tank water draining system
CN104198015A (en) * 2014-09-05 2014-12-10 陕西声科电子科技有限公司 Two-wire system externally-pasted-type liquid level meter
CN105181069A (en) * 2015-09-01 2015-12-23 深圳麦开网络技术有限公司 Inside-container liquid volume measuring method and device based on acoustic detection
US10234319B2 (en) 2015-09-01 2019-03-19 Shenzhen Moikit Network Technology Co., Ltd. Sound wave detection-based measurement method and device for liquid volume inside container
CN105571683A (en) * 2016-01-15 2016-05-11 上海海纳通物联网科技有限公司 External patch type capacitance liquid level gage and use method thereof

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130123

Termination date: 20130528