CN108981864A - A kind of liquid level calibrating installation and calibration method - Google Patents

A kind of liquid level calibrating installation and calibration method Download PDF

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Publication number
CN108981864A
CN108981864A CN201810361761.8A CN201810361761A CN108981864A CN 108981864 A CN108981864 A CN 108981864A CN 201810361761 A CN201810361761 A CN 201810361761A CN 108981864 A CN108981864 A CN 108981864A
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CN
China
Prior art keywords
liquid level
reflecting plate
level sensor
connecting rod
calibrating installation
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
CN201810361761.8A
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Chinese (zh)
Inventor
潘兵兵
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.)
Guangzhou Wenchong Shipyard Co Ltd
Original Assignee
Guangzhou Wenchong Shipyard 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 Guangzhou Wenchong Shipyard Co Ltd filed Critical Guangzhou Wenchong Shipyard Co Ltd
Priority to CN201810361761.8A priority Critical patent/CN108981864A/en
Publication of CN108981864A publication Critical patent/CN108981864A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/20Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level

Abstract

The invention discloses a kind of liquid level calibrating installation and calibration methods, including liquid level sensor, connecting rod and reflecting plate, the liquid level sensor is set on the top of cabin, one end of the connecting rod is set to the bilge, the other end of the connecting rod is connected with the liquid level sensor, the connecting rod is through on the reflecting plate, so that the reflecting plate has the freedom degree moved axially relative to the connecting rod.The reflecting plate can be used for simulating liquid level, it is compared by measurement height acquired in the liquid level sensor with the actual height of the reflecting plate to the bilge, reach the calibration that parameter is carried out to the liquid level sensor, the reflecting plate can carry out axial movement between the connecting rod, further whether verifying institute's setting parameter is correct parameter, liquid level calibrating installation of the present invention, which can be eliminated, to carry out adding water operation to cargo tank, to save a large amount of time and reduce construction cost, have many advantages, such as that structure is simple, practical.

Description

A kind of liquid level calibrating installation and calibration method
Technical field
The present invention relates to detection device technical field more particularly to a kind of liquid level calibrating installations and calibration method.
Background technique
During shipbuilding, need to calibrate the telemetering of tank level, to guarantee the accuracy of level sensing, oil Cabin mostly uses radar type liquid level sensor to take remote measurement.
It is at present to carry out adding water to cargo tank using general calibration method, oil is replaced with water, then uses radar type liquid level Sensor calibrates it, individually builds pipe-line system and water pump, Cai Nengda so needing to increase during actually adding water Radar type liquid level sensor is corrected under different liquid levels, and needs to take out in the water in cargo tank after the completion of correcting It walks, and cleans out.According to the construction specification of current ship, there are 6 cargo tanks on every ship, the volume of each cargo tank is about 300 cubic metres, each cargo tank requires to carry out it process for adding water, drawing water, calibrate and clearing up, which consumes largely Manpower, material resources and financial resources, have low efficiency, it is at high cost the disadvantages of.
Summary of the invention
In order to overcome the shortcomings of the prior art, the present invention provide one kind directly liquid level sensor can be corrected and The simple liquid level calibrating installation of structure.
The present invention also provides a kind of calibration methods based on above-mentioned liquid level calibrating installation.
In order to solve the above-mentioned technical problems, the present invention provides a kind of liquid level calibrating installations, including liquid level sensor, connection Bar and reflecting plate, the liquid level sensor are set on the top of cabin, and one end of the connecting rod is set to the bilge, the connecting rod it is another One end is connected with the liquid level sensor, and the connecting rod is through on the reflecting plate, so that the reflecting plate has phase For the freedom degree of connecting rod axial movement.
Preferably, the reflecting plate be equipped with for the mutually perforative through-hole of the connecting rod, and for connecting Lead to the gap between the through-hole and the side of the reflecting plate.
Preferably, the reflecting plate be equipped with towards the covering of the side of the liquid level sensor for microwave reflection or The material of person's ultrasonic wave;Either the reflecting plate is made of the material with microwave reflection or ultrasonic wave.
Preferably, the through-hole is set in the geometric center of gravity of the reflecting plate.
Preferably, the shape of the reflecting plate is in rounded shape, and the through-hole is set on the center of the reflecting plate, The gap is connected between the through-hole and the side of the reflecting plate along radial direction.
Preferably, the connecting rod is arranged in vertical direction, and the reflecting plate is arranged in horizontal direction.
Preferably, mounting seat, the liquid level sensor are equipped between the liquid level sensor and cabin top It is fixed in the mounting seat, the mounting seat is set on the top of the cabin by detachable structure.
A kind of calibration method based on above-mentioned liquid level calibrating installation, comprising the following steps:
Step 1: the reflecting plate is placed in the first measurement point of the connecting rod, keep the reflecting plate in level Direction is placed, and checks initial measurement height in the cabin of the liquid level sensor acquisition by control device, then measured with dipstick Actual height between the bilge and the reflecting plate;
Step 2: the initial measurement height that will acquire compares with the actual height, the liquid level is passed again The parameter of sensor carries out setting adjustment, so that measurement height and the actual height that the liquid level sensor obtains are consistent;
Step 3: the radial shield is moved to a number of other measurement points, respectively with regard to the survey acquired in same measurement point Amount height is checked with the actual height, verifies the parameter set on the liquid level sensor as correct parameter;
Step 4: taking out the reflecting plate, the calibration to the measurement parameter of the liquid level sensor is completed.
Preferably, in the step 3, other measurement points include the second measurement and third measurement point.
Preferably, first measurement point is between second measurement point and the third measurement point.
Liquid level calibrating installation and calibration method provided by the embodiment of the present invention, compared with prior art, its advantages Be: of the invention is set in the connecting rod by the reflecting plate, so that the reflecting plate can be used for simulating liquid level, passes through institute It states measurement height acquired in liquid level sensor to compare with the actual height of the reflecting plate to the bilge, reach to described Liquid level sensor carries out the calibration of parameter, and the reflecting plate can carry out axial movement between the connecting rod, further test Demonstrate,prove whether institute's setting parameter is correct parameter, liquid level calibrating installation of the present invention can be eliminated to carry out adding water, take out to cargo tank The processing operations such as water, cleaning have structure simple, practical to save a large amount of time and reduce construction cost The advantages that.
Detailed description of the invention
In order to illustrate more clearly of technical solution of the present invention, attached drawing needed in embodiment will be made below Simply introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, general for this field For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the mounting structure schematic diagram of the liquid level calibrating installation of the embodiment of the present invention.
Fig. 2 is the reflection board structure schematic diagram of the liquid level calibrating installation of the embodiment of the present invention.
Fig. 3 is the first measurement point position view of the liquid level calibrating installation of the embodiment of the present invention.
Fig. 4 is the second measurement point position view of the liquid level calibrating installation of the embodiment of the present invention.
Fig. 5 is the third measurement point position view of the liquid level calibrating installation of the embodiment of the present invention.
In figure: 1. liquid level sensors;2. connecting rod;3. reflecting plate;4. cabin is pushed up;5. the bilge;6. pedestal;7. cable.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
In addition, in the description of the present invention, it should be noted that term " first ", " second " etc. are used for description purposes only, It is not understood to indicate or imply relative importance.
As shown in Figures 1 to 5, the preferred embodiment of the invention provides a kind of liquid level calibrating installation, including level sensing Device 1, connecting rod 2 and reflecting plate 3, the liquid level sensor 1 are set on cabin top 4, and one end of the connecting rod 2 is set to the bilge 5, The other end of the connecting rod 2 is connected with the liquid level sensor 1, and the connecting rod 2 makes through on the reflecting plate 3 Obtaining the reflecting plate 3 has the freedom degree moved axially relative to the connecting rod 2.
Liquid level calibrating installation and calibration method based on above-mentioned technical characteristic are set to the connection by the reflecting plate 3 On bar 2, so that the reflecting plate 3 can be used for simulating liquid level, by measurement height acquired in the liquid level sensor 1 and described The actual height of reflecting plate 3 to the bilge 5 compares, and reaches the calibration that parameter is carried out to the liquid level sensor 1, described anti- Axial movement can be carried out between the connecting rod 2 by penetrating plate 3, further verify whether institute's setting parameter is correct parameter, this The invention liquid level calibrating installation, which can be eliminated, to carry out the processing operations such as adding water, draw water, clean to cargo tank, to save big The time of amount and reduction construction cost, have many advantages, such as that structure is simple, practical.
As shown in Fig. 2, the reflecting plate 3 be equipped with for the mutually perforative through-hole of the connecting rod 2, and for being connected to Gap between the through-hole and the side of the reflecting plate 3, the through-hole realize that the reflecting plate 3 is movably sheathed on institute State in connecting rod 2, the gap can be quick installed in the connecting rod 2 convenient for the radial shield, and can quickly from It is removed in the connecting rod 2.
Further, the reflecting plate 3 be equipped with towards the covering of the side of the liquid level sensor 1 for microwave reflection or The material of ultrasonic wave;Either the reflecting plate 3 is made of the material with microwave reflection or ultrasonic wave, realizes the reflecting plate 3 imitate can microwave reflection or ultrasonic wave liquid level face.
Further, the through-hole is set in the geometric center of gravity of the reflecting plate 3, convenient for the reflecting plate 3 to be adjusted to Horizontal position avoids the reflecting plate 3 from causing measurement inaccurate because of inclination.
Further, the shape of the reflecting plate 3 is preferentially in rounded shape, and the through-hole is set to the center of the reflecting plate 3 On, the gap is connected between the through-hole and the side of the reflecting plate 3 along radial direction, convenient for the through-hole and institute State the positioning in gap.
It is understood that in a specific embodiment of the present invention, the reflecting plate 3 can be using the circle of 3mm thickness Shape plate, the material of circular slab can be plank, cardboard, plastic plate, and the thin plates such as iron plate are covered entire circular slab with masking foil, And cut off along half radial center of circle direction, form the gap, and described at thin plate center drilling out a diameter 4mm with electric hand drill Through-hole, the connecting rod 2 can use radar type liquid level sensor, this hair using steel wire, the liquid level sensor 1 Bright have no limits above-mentioned material, size, shape etc..
Further, as shown in Figure 1, the connecting rod 2 is arranged in vertical direction, the reflecting plate 3 is set in horizontal direction It sets, so that the reflecting plate 3 can imitate the lifting of level horizontal surface.
Further, mounting seat 6, the liquid level sensor 1 are equipped between the liquid level sensor 1 and cabin top 4 It is fixed in the mounting seat 6, the mounting seat 6 is set on cabin top 4 by detachable structure convenient for described Liquid level sensor 1 carries out installation and removal, and the detachable structure is preferably that structure is simple, installs firm threaded connection.
As shown in Figures 3 to 5, a kind of calibration method based on above-mentioned liquid level calibrating installation, specifically includes the following steps:
Step 1: the reflecting plate 3 is placed in the first measurement point of the connecting rod 2, keep the reflecting plate 3 in water Square to placement, initial measurement height in cabin that the liquid level sensor 1 obtains is checked by control device, then surveyed with dipstick Actual height between the bilge 5 and the reflecting plate 3 out;
Step 2: the initial measurement height that will acquire compares with the actual height, the liquid level is passed again The parameter of sensor 1 carries out setting adjustment, so that measurement height and the actual height phase one that the liquid level sensor 1 obtains It causes;
Step 3: the radial shield is moved to a number of other measurement points, respectively with regard to the survey acquired in same measurement point Amount height is checked with the actual height, verifies the parameter set on the liquid level sensor 1 as correct parameter;
Step 4: taking out the reflecting plate 3, the calibration to the measurement parameter of the liquid level sensor 1 is completed.
Based on above-mentioned calibration method, radar type liquid level sensor 1 is passed through into the gap on the circular slab by steel wire, Reach the center of the circular slab;Keep the circular slab horizontal, position is constant, and radar type liquid level sensor 1 passes through measurement electricity Cable 7 is connected with computer, and computer checks the initial liquid level height in the cabin simulated at present;Again with dipstick measure the bilge 5 away from Height from circular slab;The height that radar type liquid level sensor 1 measures is compared with the depth measurement of practical dipstick height, again The parameter of sensor is set, so that the depth measurement height of height and practical dipstick that radar type liquid level sensor 1 measures Unanimously;It chooses the different two o'clocks of the cabin wirerope again again, checks the measurement height and reality of radar type liquid level sensor 1 respectively The depth measurement height of border dipstick, certificate parameter setting is correct, and the present embodiment can directly be corrected the liquid level sensor 1 and test Card adds water operation without carrying out to cargo tank, to save a large amount of time and reduce construction cost, while having operation letter Just the advantages of.
Further, in order to enable the process of certificate parameter is fast and accurate, other measurement points include second measurement and Third measurement point, first measurement point expand verify data between second measurement point and the third measurement point Range improves the accuracy of certificate parameter process, and as shown in Figures 3 to 5, first measurement point, the second measurement point, third are surveyed The height of amount point to the bilge 5 is respectively H, h1, h2.
In conclusion liquid level calibrating installation and calibration method described in the embodiment of the present invention have the advantage that (1) avoids To cargo tank add water operation, to be omitted plus water, draws water, the work steps such as cleaning cargo tank have saved human and material resources and wealth Power;(2) shorten the prover time of radar type liquid level sensor, through this embodiment can be high with the difference of quickly calibrated cargo tank Degree saves the time;(3) reduce the number participated in the calibration of the radar type liquid level sensor of cargo tank, the personnel of not needing carry out plus water, It draws water and clean work, reduces the expenditure of human cost;(4) process of applying for checking and examination for optimizing cargo tank, is directly entered in cargo tank Analog sensor height avoids the work of depth measurement;(5) labor intensity for alleviating commissioning staff, does not need commissioning staff couple It is measured one by one by depth-sounding pipe.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features; And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and Range.

Claims (10)

1. a kind of liquid level calibrating installation, which is characterized in that including liquid level sensor, connecting rod and reflecting plate, the liquid level is passed Sensor is set on the top of cabin, and one end of the connecting rod is set to the bilge, the other end of the connecting rod and the liquid level sensor phase Connection, the connecting rod move axially so that the reflecting plate has relative to the connecting rod through on the reflecting plate Freedom degree.
2. liquid level calibrating installation according to claim 1, which is characterized in that the reflecting plate be equipped with for the company The mutually perforative through-hole of extension bar, and the gap for being connected between the through-hole and the side of the reflecting plate.
3. liquid level calibrating installation according to claim 1, which is characterized in that the reflecting plate is towards the liquid level sensor Side covering be equipped with the material for microwave reflection or ultrasonic wave;Either the reflecting plate is by with microwave reflection or super The material of sound wave is made.
4. liquid level calibrating installation according to claim 2, which is characterized in that the through-hole is set to the geometry of the reflecting plate In center of gravity.
5. liquid level calibrating installation according to claim 4, which is characterized in that the shape of the reflecting plate is in rounded shape, institute Through-hole is stated on the center of the reflecting plate, the gap is connected to the side of the through-hole Yu the reflecting plate along radial direction Between side.
6. liquid level calibrating installation according to claim 1, which is characterized in that the connecting rod is arranged in vertical direction, institute Reflecting plate is stated to be arranged in horizontal direction.
7. liquid level calibrating installation according to claim 1, which is characterized in that between the liquid level sensor and cabin top Equipped with mounting seat, the liquid level sensor is fixed in the mounting seat, and the mounting seat passes through detachable structure On the top of the cabin.
8. the calibration method of liquid level calibrating installation described in any one of -7 according to claim 1, which is characterized in that including following Step:
Step 1: the reflecting plate is placed in the first measurement point of the connecting rod, the reflecting plate is kept in horizontal direction It places, initial measurement height in the cabin of the liquid level sensor acquisition is checked by control device, then measure the bilge with dipstick With the actual height between the reflecting plate;
Step 2: the initial measurement height that will acquire compares with the actual height, again to the liquid level sensor Parameter carry out setting adjustment so that the liquid level sensor obtain measurement height and the actual height it is consistent;
Step 3: the radial shield is moved to a number of other measurement points, respectively with regard to the height of the measurement acquired in same measurement point Degree is checked with the actual height, verifies the parameter set on the liquid level sensor as correct parameter;
Step 4: taking out the reflecting plate, the calibration to the measurement parameter of the liquid level sensor is completed.
9. liquid level calibration method according to claim 8, which is characterized in that in the step 3, other measurements Point includes the second measurement and third measurement point.
10. liquid level calibration method according to claim 9, which is characterized in that first measurement point is surveyed described second Between amount point and the third measurement point.
CN201810361761.8A 2018-04-20 2018-04-20 A kind of liquid level calibrating installation and calibration method Pending CN108981864A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110864774A (en) * 2019-12-25 2020-03-06 三门核电有限公司 Automatic calibration device for ultrasonic level meter and using method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202915987U (en) * 2012-11-12 2013-05-01 鞍钢集团工程技术有限公司 Surface measurement device
CN104949739A (en) * 2015-06-19 2015-09-30 北京振兴计量测试研究所 Straight-line benchmark structure for field calibration of large-size liquid level sensor
CN105784070A (en) * 2016-04-07 2016-07-20 南京南瑞集团公司 Method and platform for testing air-medium ultrasonic level gauge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202915987U (en) * 2012-11-12 2013-05-01 鞍钢集团工程技术有限公司 Surface measurement device
CN104949739A (en) * 2015-06-19 2015-09-30 北京振兴计量测试研究所 Straight-line benchmark structure for field calibration of large-size liquid level sensor
CN105784070A (en) * 2016-04-07 2016-07-20 南京南瑞集团公司 Method and platform for testing air-medium ultrasonic level gauge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110864774A (en) * 2019-12-25 2020-03-06 三门核电有限公司 Automatic calibration device for ultrasonic level meter and using method thereof

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Application publication date: 20181211