CN203203650U - Automatic calibrating device for measuring capacity of irregular ship cabin - Google Patents
Automatic calibrating device for measuring capacity of irregular ship cabin Download PDFInfo
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- CN203203650U CN203203650U CN2013202128443U CN201320212844U CN203203650U CN 203203650 U CN203203650 U CN 203203650U CN 2013202128443 U CN2013202128443 U CN 2013202128443U CN 201320212844 U CN201320212844 U CN 201320212844U CN 203203650 U CN203203650 U CN 203203650U
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Abstract
The utility model relates to an automatic calibrating device for measuring the capacity of an irregular ship cabin. The automatic calibrating device for measuring the capacity of the irregular ship cabin is characterized in that a water pipe is included, a pressure reducing and stabilizing valve (4), a pressure transmitter (6), a flowmeter (8), an electromagnetic valve (9) and a first temperature transmitter (10) are arranged on the water pipe in sequence. The automatic calibrating device for measuring the capacity of the irregular ship cabin further comprises a water level meter (12) and a second temperature transmitter (13) which are arranged in a to-be-tested ship cabin. A control system is connected with the pressure reducing and stabilizing valve (4), the pressure transmitter (6), the flowmeter (8), the electromagnetic valve (9), the first temperature transmitter (10), the water level meter (12) and the second temperature transmitter (13) respectively. By means of the automatic calibrating device for measuring the capacity of the irregular ship cabin, the labor intensity of workers is relieved, and the working efficiency of the workers is improved by more than two times. The automatic calibrating device for measuring the capacity of the irregular ship cabin is high in application value.
Description
Technical field
The utility model relates to a kind of capacity calibrating installation, is the capacity automatic calibrator in cabin, a kind of irregular naval vessel specifically.
Background technology
Capacity refers to can hold in the container volume of material or the amount of quality, and namely the spatial volume that comprises of internal tank also can be described as volume.Capacity measurement is exactly with measuring device various flowable mass to be carried out the measurement of volume amount, and the differing heights of container is corresponding to different volumes.The capacity measurement scope is very wide, and low capacity can be little of the ppt milliliter, and big capacity can reach more than ten ten thousand steres.For simplicity, capacity is divided into big capacity and two meterings of low capacity category.Big capacity measuring device is generally metal tank, and the low capacity measuring device is generally glass container, and its classification situation is seen Fig. 1.
Every field in the development of the national economy of daily life, relate to a large amount of measurement instruments, for making the unification of national value, just must guarantee the unification of measurement instrument value, and the value that is measured must have the characteristic that can interrelate with national capacity measurement benchmark.Use the requirement of uncertainty according to measuring device, the capacity measurement method is also inequality, and three kinds of measurement method, direct comparison method and geometric measurement method are arranged usually.
The measurement method is by measuring quality and the density of the actuating medium that holds in the container, calculating the long-pending a kind of method of container contents.Direct comparison method is to use higher leveled standard measuring device, directly compares by the volume of actuating medium and tested measuring device.Geometric measurement method i.e. mathematical model by setting up, and uses various dimensional measurement means to measure some feature geometries parameter of container, and then obtains capability value by calculating.Prior art adopts standard capacity measure to come the capacity in storehouse, irregular naval vessel is detected, employing be direct comparison method.
Cabin, irregular naval vessel mainly refers to cabins such as the Bunker Fuel Oil, ballast tank, support module except cargo hold, the characteristics of these cabins are complex structures, generally do not possess the molded lines that can use geometric model to describe, can't use the conventional geometric mensuration to carry out cubic content measurement.Present technical method is to use standard capacity measure to carry out transmission of quantity value, and there is following some problem in this method:
1, accuracy of measurement deficiency: calibration operation needs omnidistance artificial the participation, level gauging difficulty height in the cabin, and the personal error influence is bigger;
2, metal tank is bulky, is not easy to transportation.Standard capacity measure is the fixedly value container of producing according to certain technical specification, and main application is to be fixed on to examine and determine in the laboratory or calibration operation, and volume is bigger, is not easy to transport and on-the-spot the use;
3, calibrating efficient is low: measuring speed is slow, and often carrying out a work period needs manually-operated more than 6 hours, and labour intensity is big, and verification process is also more loaded down with trivial details.
The utility model content
The utility model technical issues that need to address are:
1) capacity on existing irregular naval vessel calibrating, inefficiency.The irregular liquid tank that often measures whole naval vessel needs 1-2 month time, and the cycle of present China ship construction had only about 6 months, can have influence on the speed of application of ship construction like this;
2) labour intensity is big, needs to consume great human and material resources cost.The standard measuring device that prior art will be used in the laboratory originally is transported to the on-the-spot use of ship construction, must employ truck, the reasonable carrying, work on the spot also needs manually to demarcate standard measuring device, can enough guarantee the accuracy of transmission of quantity value, whole work is more loaded down with trivial details, common staff is difficult to be competent at, and must just can be operated by the personnel through specialty metering knowledge training.In the course of work, rely on manually-operated fully, consumed a large amount of human and material resources.
3) automaticity is low.Prior art need manually be carried out water filling, adjusts scale, discharged water, liquid level in the survey room, and whole process all is by manual operations, does not introduce automatic technology fully.
4) it is huge to carry out the used device volumes such as standard capacity measure of capacity check, portable poor.Standard measuring device is because volume is big, and fixed installation all needs the several people to finish jointly, also will occupy certain space at the construction field (site), and it is poor to use operability.
5) influenced by manually-operated bigger for the metering result precision.Because measuring process is finished by the metrological personnel operation fully, manually-operated uncertainty and subjective error all can cause metering result's error.
The utility model has been taked following technical scheme:
Through decompression venting valve 4, step-down and voltage stabilizing are carried out flow measurement by flowmeter 8 by aqueduct for the capacity automatic Verification method in cabin, a kind of irregular naval vessel, pressure water source, carry out temperature survey through first temperature transmitter 10 again, flow into cabin, described irregular naval vessel; Utilize pressure unit 6 to detect the water side hydraulic pressure of decompression venting valve 4; Utilize the liquid level in 12 pairs of irregular cabins of liquid level gauge to measure in real time; Utilize the liquid temperature in 13 pairs of irregular cabins of second temperature transmitter to measure in real time; Control system and decompression venting valve 4, pressure unit 6, flowmeter 8, first, second temperature transmitter 10,13 carries out real-time communication between the liquid level gauge 12, and according to the electric pressure signal of pressure unit 6 decompression venting valve 4 is controlled, and carries out hydraulic pressure and regulates; The liquid level that the data on flows that control system records according to flowmeter 8 and liquid level gauge 12 record obtains the volume of the corresponding liquid level in cabin, naval vessel, and carries out volume according to first, second temperature transmitter 10,13 the temperature difference and correct.
Utilize filtrator 3 to be arranged on described decompression venting valve 4 and carry out the current filtration before.
Utilize vent valve 3 to be arranged on described decompression venting valve 4 and carry out exhaust before.
The described pair of water stream channel wherein can carry out batch (-type) circulation or continuous schedule circulation during a circulation.
The calibrating installation of the capacity automatic Verification method correspondence in cabin, a kind of irregular naval vessel comprises aqueduct, is provided with decompression venting valve 4 on the described aqueduct successively, pressure unit 6, flowmeter 8, solenoid valve 9, the first temperature transmitters 10; Also comprise liquid level gauge 12, the second temperature transmitters 13 that arrange in the cabin, naval vessel to be measured; Control system respectively with described decompression venting valve 4, pressure unit 6, flowmeter 8, solenoid valve 9, the first temperature transmitters 10, liquid level gauge 12, the second temperature transmitters 13 connect.
Also comprise filtrator 2, vent valve 3, described filtrator 2, vent valve 3 is connected in the front end of described decompression venting valve 4 successively.
The calibrating installation of the capacity automatic Verification method correspondence in cabin, a kind of irregular naval vessel comprises aqueduct, is provided with decompression venting valve 4 on the described aqueduct successively, pressure unit 6, flowmeter 8, three-way diverter valve 14, the first temperature transmitters 10; Also comprise liquid level gauge 12, the second temperature transmitters 13 that arrange in the cabin, naval vessel to be measured; Control system respectively with described decompression venting valve 4, pressure unit 6, flowmeter 8, three-way diverter valve 14, the first temperature transmitters 10, liquid level gauge 12, the second temperature transmitters 13 connect; Flowmeter 8 and another flowmeter 8 ' form in parallel big, than two water stream channels of low discharge, collaborate to split into pair waterflood paths again by described three-way diverter valve 14 and inject cabin, naval vessel to be measured.
Also comprise filtrator 2, vent valve 3, described filtrator 2, vent valve 3 is connected in the front end of described decompression venting valve 4 successively.
Characteristics of the present utility model are: the utility model has been developed the automatic calibrator of a kind of irregular naval vessel volume of compartment amount at the technical matters that exists in the prior art, this device is a kind of automatic capacity calibrating installation based on flow rate metering method, has mainly utilized and has measured fluid obtains tested constant volume device capacity at the accumulated value of the amount that flows through a uniform section know-why.The software systems of combination and independent development by various measurement instruments, the automatic control that has realized multiple signals such as flow, liquid level, temperature, pressure with obtain, and can calculate raw data in real time, finally obtain volume and liquid level chart one to one automatically.Wherein, temperature signal has two, is respectively to obtain through the flowmeter water temperature and obtain water temperature in the cabin, naval vessel to be measured, because water temperature has influence to the current volume, according to these two water temperatures the current volume is carried out automatic straightening, thereby obtains volume more accurately.
Capacity calibration accuracy height has been simplified operating personnel's job step greatly, has reduced labour intensity, has improved measuring speed, has shortened the calibrating time, has overcome the problem that exists in the past.In addition, each valve of the utility model hardware components, connecting line, filtering element, detecting element have been realized the package assembly of detachable, realized splitting the vanning transportation, the mode of operation of on-the-spot combination has solved the problem of device transportation inconvenience such as original standard capacity measure.Prove that through site test the utility model can satisfy the capacity measurement demand in cabin, irregular naval vessel, accuracy of detection height, debugging is convenient, the automaticity height is a kind of convenient novel calibrating installation that uses, and greatly reduces the labour intensity that existing naval vessel volume of compartment amount detects.
Description of drawings
Fig. 1 is the synoptic diagram of container types segmentation.
Fig. 2 is the connection diagram of the capacity automatic calibrator in cabin, the irregular naval vessel of the utility model each link when using single water stream channel.
Fig. 3 is the connection diagram of the capacity automatic calibrator in cabin, the irregular naval vessel of the utility model each link when using two water stream channel.
Fig. 4 is the connection diagrams of two water stream channels when using three-way diverter valve.
Fig. 5 is the connection diagrams of two water stream channels when a solenoid valve respectively is set.
Fig. 6 is the capacity automatic calibrator structured flowchart in cabin, the irregular naval vessel of the utility model.
(a) and (b) are respectively continous way circulation and carry out the synoptic diagram that two kinds of mode of operations of water filling are carried out in water filling and batch (-type) circulation among Fig. 7.
Wherein, 1, adapter flange, 2, filtrator, 3, vent valve, 4, decompression venting valve, 5, cowling panel, 6, pressure unit, 7, hand valve, 8, flowmeter, 8 ', another flowmeter, 9, solenoid valve, 9 ', another solenoid valve, 10, first temperature transmitter, 11, cabin, irregular naval vessel to be detected, 12, liquid level gauge, 13, second temperature transmitter, 14, three-way diverter valve.
Embodiment
Below in conjunction with specific embodiment the utility model is further specified.
Embodiment (one):
Referring to Fig. 2, package unit is made up of pipeline portions and control system two parts.Measuring pipeline can install according to the specific requirement combination of in-site measurement environment, and the segmentation sub-module uses; Control system is made up of a control box and software systems, and by a plurality of measurement instruments of wired connection, the data line by a RJ45 interface connects computing machine again, and the operating software system carries out operation and the monitoring of whole measuring process.After finishing data acquisition, can directly carry out data and handle, analyze, calculate, until the output probation redport.
This device can be divided into hardware development and software development two parts according to development process.It is perfect that the technology path of hardware development mainly contains device design, customization processing, Installation and Debugging, verification experimental verification and improvement; The technology path of software development mainly contains software function design, general frame design, modular design, programming, program uniting and adjustment and integrated testability.
Referring to Fig. 2, " water source " adopts hose saddle for having the pressure water source of certain hydraulic pressure.Hose saddle is connected with detachable hydraulic pipeline, connect adapter flange 1, filtrator 2, vent valve 3, decompression venting valve 4, pressure unit 6, hand valve 7 on the hydraulic pipeline successively, flowmeter 8, solenoid valve 9, first temperature transmitter 10, the current in the hydraulic pipeline inject in the cabin, irregular naval vessel to be detected 11.Wherein, filtrator 2 is used for the impurity of filtered water, prevent that impurity from causing damage to the decompression venting valve on the water stream channel, flowmeter etc., vent valve 3 is used for the air of current is discharged, make flowmeter 8 testing results more accurate, to the reduce pressure hydraulic pressure of voltage stabilizer 4 water sides of pressure unit 6 feeds back to control system, control system is regulated the discharge pressure of decompression venting valve 4 automatically according to hydraulic pressure, thereby for follow-up flowmeter 8 detecting elements such as grade provide stable hydraulic pressure, cowling panel 5 is used for the impurity of further filtered water stream.Solenoid valve 9 and hand valve 7 are used for current are closed.Be provided with liquid level gauge 12 and second temperature sensor 13 in the cabin, irregular naval vessel to be detected 11, be used for monitoring in real time liquid level and water temperature in the cabin, irregular naval vessel to be detected 11.
Consider that the water temperature and cabin, the irregular naval vessel to be detected 11 interior water temperatures that flow through flowmeter 8 might have the temperature difference, and the temperature difference can change to the volume of water body, thereby cause the out of true of measurement, therefore by being set, first, second temperature transmitter 10,13 measures the water temperature at above-mentioned two places respectively, utilize software that the capacity that records is corrected, the capacity-liquid level chart after final output is corrected.The computing formula of the influence of water volume being corrected about the temperature difference is prior art, and present embodiment repeats no more.
Referring to Fig. 7, the software design at first will consider it is the mode of operation of calibrating installation.Different according to alignment time and accuracy requirement have been designed two kinds of mode of operations.A kind of is continuous operation mode, shown in Fig. 7-a, and under this pattern, uninterrupted water filling in the cabin, irregular naval vessel to be detected 11 in the course of work, capacities chart is calculated and drawn to control system by real time record integrated flux and corresponding liquid level value.The needed alignment time of this working method is short, efficient is high, and being applicable to needs quickly calibrated occasion.Another mode of operation is the stepping mode of operation, shown in Fig. 7-b, under this pattern, one group be need preestablish and component volume or level intervals estimated, after injecting the medium of intended component in the course of work at every turn, level stability is waited in system's automatic-closing valve and time-delay, reads corresponding liquid level then.One-shot measurement enters injection, time-delay and the measurement of next intended component on the same group after finishing, and repeats this process and finishes up to whole calibration operation.Under this working method, the level stability that system obtains is higher, can obtain higher level gauging precision.
Aspect the use installation, adopt modular hardware configuration, be divided into the flow measurement module, pressure measuring module, temperature-measuring module, five sub-units such as automatic valve module and stable platform.In measure field, can be according to the concrete condition of external environment condition, combination is installed and used, and the fabricating yard is not had special requirement yet, and in transportation, partition vanning transportation has solved the problem of transportation inconvenience.Aspect software operation, the user only need arrange the initial meter parameter, clicks start button then, just can measure automatically, arrives when presetting correlation parameter, and device waits for regard to break-off next instruction is selected whether to continue again, and the user experiences very good.
Aspect the material of selecting arrangement, the research staff has also carried out analyzing contrast.At first, according to the electromechanical equipment designing requirement of routine, take structural strength metal material better, with low cost.But owing to consider the portability of device again, if all adopt conventional material, the weight of package unit reaches more than the 200kg possibly, can cause very big difficulty to carrying.Therefore, the research staff comprehensive relatively after, determine to take ultra-thin property contract stainless steel material, use this material not only can the stable operation of assurance device in measuring process, more can be with the control of device general assembly (TW) in 100kg, separate room weight is especially less than 20kg.Like this, just solved the problem of rapidoprint.
According to mode of operation, design corresponding software module.Comprised flowmeter control, different working modes is selected, valve control and feedback, the realization of functions such as flow process control, the data acquisition of temperature sensor and pressure transducer, the calibration of liquid level gauge and data acquisition, the pre-service of data, elimination of rough difference, the match of 2-D data curve, the interpolation processing of fitting data, to the data computation of putting, generate functions such as probation redport by line automatically.
Embodiment (two):
The difference of present embodiment and embodiment (one) mainly is to have used two water stream channels, is equipped with a flowmeter separately, carries out water filling, referring to Fig. 3-Fig. 5.The research staff is according to a large amount of work on the spot experience and technical requirement, thinks the accuracy that should guarantee in-site measurement, again can be easy to carry, and operating process reduces manual intervention as much as possible.According to these thinkings, designed twin-channel measurement pipeline.This mentality of designing is to consider the variation that is changed its planform by the calibrating object with liquid level, therefore bottom space is less, and the liquid level vary within wide limits adopts the measurement pipeline of little caliber, adopt coriolis mass flowmeters simultaneously, reduce the measuring error that flow velocity brings.When liquid level rose to the middle part height, the liquid level variation also tended to be steady, and at this time switches to big Calibration passage, and this passage adopts turbo flow meter, and measuring speed is very fast, can effectively increase work efficiency.When liquid level approaches to eminence, switch to little Calibration passage again, reduce flow velocity, liquid level is walked unhurriedly rise to peak.By this measuring method, can either guarantee the accuracy of measurement result, also can reduce Measuring Time significantly.
In conjunction with above-mentioned two embodiment, the utility model is described in further detail as follows:
1) the utility model proposes a cover based on the quick measuring method of dynamic capacity of flow-liquid level method, realized the measurement to the irregular cubic capacity of tanks in naval vessel.Though the measuring accuracy of conventional capacity relative method is very high, the manpower and materials cost is bigger, has therefore restricted the usable range of volumetric method.The dynamic capacity fast measurement technique based on flow-liquid level method of this project development has solved the shortcoming of capacity relative method well.Use traffic instrumentation amount integrated flux, cooperate liquid level in the cabin, liquid level instrumentation amount naval vessel, whole measuring process and follow-up data are handled and are all finished automatically by computing machine, as long as manual intervention seldom just can be finished gage work, and can realize the measuring problem in artificial unapproachable narrow and small cabin and cabin, irregular naval vessel, remedy the blank in this field.
2) the utility model has designed a kind of high precision photoelectric reflex gage that is applicable to the differing heights liquid tank, not only can cover the level gauging in the 0-30m scope, measuring accuracy is less than ± 1.5mm, and can effectively eliminate the error effect that liquid fluctuating brings.The work of naval vessel volume of compartment measurement amount not only has only the surveying work of volume aspect, also comprises the surveying work of corresponding liquid level.The characteristics that the research staff has nothing in common with each other according to each cabin, naval vessel altitude datum, used a kind of high precision photoelectric reflex gage applicable to different altitude datums, this liquid level gauge is based on the principle of photoelectric reflection, can install easily and the dip hatch top, and according to field condition, design the supported at three point adjusting mechanism, guaranteed the vertical angle of laser guide.In addition, the output of Modbus digital signal can conveniently realize digitizing monitoring and automatic measurement in real time.In conjunction with experimental situation, also processed explosion-resistant enclosure, with reply in-site measurement environment.Through experimental verification, this liquid level gauge can cover the measurement range of 0-30m.
3) the utility model has been developed the volumetric measuring device of the portable quick assembling of a cover, can be implemented in assembling fast in the complicated site environment, has improved on-the-spot work efficiency, has broken through the range of application of flow metering; In order to realize portable field gage work mode, the research staff has just designed the pipeline structure of portable assembly at the development device initial stage.Whole test pipeline is divided into fixed rack, filtrator pipeline, proving flowmeter pipeline, electric control valve pipeline, gas exhaust piping and temperature and pressure and measures several parts formations such as pipeline.Connect the middle rubber sheet gasket of installing, not only convenient installation but also reliability and durability between the various piece by fast interface.Utilize the fixed rack of tripod structure to set up the each several part pipeline respectively, connect fast then, form calibrating installation; Two ends at the filtrator pipeline have standard flange, can connect water inlet and flowmeter; Adopt the binary channels circuit design in the proving flowmeter line segments according to flow range and caliber size, use the reducing pipeline to be connected with flowmeter, and leave the long straight length of 1.5m at the leading portion that the flowmeter place is installed, can guarantee the accuracy of measurement of flow instrument; Electric control valve pipeline and gas exhaust piping are installed in the front end of flowmeter survey pipeline, the effect that can realize controlling flow rate of liquid and get rid of gases affect; Temperature and pressure are measured the rear end that pipeline is connected flowmeter side face pipeline, in order to measure the variation by the temperature and pressure at flowmeter place in real time.By split-type design, the on-the-spot realization of the connected mode of assembling fast, make device can in site environment complicated and changeable, realize capacity measurement work, break through the restriction that the calibration operation of flow metering in the past can only under lab carry out in the past, also enlarged the working range of flow metering.
4) propose the variable liquid level of a kind of sample frequency-capacity measurement method, changed according to the flow rate of liquid by flowmeter, revised the sampling period in real time, reached modified flow rate, liquid level synchro measure purpose.In order to solve the nonsynchronous difficult problem of flow measurement and level gauging, the research staff has proposed the variable measuring method of a kind of sample frequency, this method is the rate of flow of fluid by recording, known pipeline radius and duct length, calculate the time of liquid level delay measurements, constantly adjust the sampled data cycle of software, to realize the purpose of flow and liquid level synchro measure.The advantage of this method is to revise sample frequency in real time, in measuring process, obtains the data of flow velocity, flow and integrated flux often earlier, and then obtains temperature, pressure data, obtains the data of liquid level at last.And temperature, pressure data only participate in the calculating of correction, data on flows is again prior to liquid level data, therefore, project team calculates each integrated flux sampled point corresponding time delay in real time by software, after whole measuring process is finished, carry out the adjustment of sample frequency again, to realize the Data Matching of liquid level-capacity.This method can solve the nonsynchronous difficult problem of data.
The utility model is compared with technology with existing, is the robotization that has realized measuring process on the one hand, greatly reduces the labour intensity of survey crew; Be to have shortened Measuring Time effectively on the other hand, work efficiency improves more than two times.
Claims (4)
1. the capacity automatic calibrator in cabin, an irregular naval vessel is characterized in that:
Comprise aqueduct, be provided with decompression venting valve (4) on the described aqueduct successively, pressure unit (6), flowmeter (8), solenoid valve (9), first temperature transmitter (10);
Also comprise the liquid level gauge (12) that arranges in the cabin, naval vessel to be measured, second temperature transmitter (13);
Control system respectively with described decompression venting valve (4), pressure unit (6), flowmeter (8), solenoid valve (9), first temperature transmitter (10), liquid level gauge (12), second temperature transmitter (13) connects.
2. the capacity automatic calibrator in cabin, irregular naval vessel as claimed in claim 1 is characterized in that: also comprise filtrator (2), and vent valve (3), described filtrator (2), vent valve (3) is connected in the front end of described decompression venting valve (4) successively.
3. the capacity automatic calibrator in cabin, an irregular naval vessel is characterized in that:
Comprise aqueduct, be provided with decompression venting valve (4) on the described aqueduct successively, pressure unit (6), flowmeter (8), three-way diverter valve (14), first temperature transmitter (10);
Also comprise the liquid level gauge (12) that arranges in the cabin, naval vessel to be measured, second temperature transmitter (13);
Control system respectively with described decompression venting valve (4), pressure unit (6), flowmeter (8), three-way diverter valve (14), first temperature transmitter (10), liquid level gauge (12), second temperature transmitter (13) connects;
Flowmeter (8) and another flowmeter (8 ') form in parallel big, than two water stream channels of low discharge, collaborate to split into pair waterflood paths again by described three-way diverter valve (14) and inject cabin, naval vessel to be measured.
4. the capacity automatic calibrator in cabin, irregular naval vessel as claimed in claim 3 is characterized in that: also comprise filtrator (2), and vent valve (3), described filtrator (2), vent valve (3) is connected in the front end of described decompression venting valve (4) successively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202128443U CN203203650U (en) | 2013-04-24 | 2013-04-24 | Automatic calibrating device for measuring capacity of irregular ship cabin |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202128443U CN203203650U (en) | 2013-04-24 | 2013-04-24 | Automatic calibrating device for measuring capacity of irregular ship cabin |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296821A (en) * | 2014-10-17 | 2015-01-21 | 北京三兴汽车有限公司 | Automatic oil tank capacity calibration system |
| CN105823532A (en) * | 2016-05-16 | 2016-08-03 | 上海裕凡实业有限公司 | Mobile flow online calibrating system |
| CN111623849A (en) * | 2020-06-11 | 2020-09-04 | 北京菲舍波特科技发展有限公司 | Intelligent liquid tank volume measuring device |
-
2013
- 2013-04-24 CN CN2013202128443U patent/CN203203650U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296821A (en) * | 2014-10-17 | 2015-01-21 | 北京三兴汽车有限公司 | Automatic oil tank capacity calibration system |
| CN105823532A (en) * | 2016-05-16 | 2016-08-03 | 上海裕凡实业有限公司 | Mobile flow online calibrating system |
| CN111623849A (en) * | 2020-06-11 | 2020-09-04 | 北京菲舍波特科技发展有限公司 | Intelligent liquid tank volume measuring device |
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