CN203824621U - Device for detecting and testing nested static force water level balanced type measuring weir water gauge - Google Patents
Device for detecting and testing nested static force water level balanced type measuring weir water gauge Download PDFInfo
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- CN203824621U CN203824621U CN201420238378.0U CN201420238378U CN203824621U CN 203824621 U CN203824621 U CN 203824621U CN 201420238378 U CN201420238378 U CN 201420238378U CN 203824621 U CN203824621 U CN 203824621U
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Abstract
The utility model relates to a device for detecting and testing a nested static force water level balanced type measuring weir water gauge. The device is composed of a test barrel, a water injection cylinder, a water drainage barrel, a communication pipe, a liquid level observation pipe, a magnetostrictive liquid level gauge, a test platform, an adjustable support foundation, a support rod, a sliding adjusting frame, a hand-operated goniometer, a tested water level gauge hanging fixture, a fixing plate, a bubble type level, a water injection cylinder support platform, a nested water barrel, a tested water level gauge, a tested water level gauge float cylinder, a liquid level gauge measuring bar, a sliding rack, a plug valve, an X-axial adjusting knob, a Y-axial adjusting knob and a pincer-typed clamp. Changes of the lifting amount valve of the water level of the test barrel are achieved by controlling the water supply and drainage relation among the water injection cylinder, the water drainage barrel and the test barrel, the height of the position of the test barrel is measured through the high precision magnetostrictive liquid level gauge, and normal direct cast type static feature detection and test and normal indirect float type static feature detection and test for a seepage flow monitoring instrument are achieved. The device for detecting and testing the nested static force water level balanced type measuring weir water gauge is simple in structural design, high in accuracy, strong in operability and capable of meeting the functional requirements of static feature parameter detection and test of the seepage flow monitoring instrument in water conservancy engineering.
Description
Technical field
The utility model relates to a kind of nested static level balanced type weir water-level gauge verification test device, for the verification test device of in water conservancy construction, the static characteristics of seepage flow monitoring instrument (weir water-level gauge) being tested and being tested.
Background technology
In accordance with the explanation of < < Dam Safety Instrumentation verification test rules > > (SL530-2012) clause. in general provisions .1.0.1, about " ' Dam Safety Instrumentation bury underground before ' regulation is buried underground in the previous year for installing; be monitoring instrument be 1 year through verification test qualified valid period; surpass the term of validity and implement to install the monitoring instrument buried underground verification test again " regulation, therefore tackle in these cases the test job of testing of all kinds of weir water-level gauges.Whether the static characteristics such as resolution, nonlinearity, nonrepeatability, hysteresis, composition error that draws tested weir water-level gauge by verification test instrument equipment meets code requirement, to meet the requirement of the measuring accuracy after burying underground.This standard is applicable to the on-the-spot laboratory third party inspection test that Dam Safety Instrumentation (sensor) before burying underground is installed.For the instrument of dam safety monitoring, should meet the requirement of this standard, the verification test that the Safety Monitoring Instruments of other hydraulic engineerings is installed before burying underground can be with reference to this standard.
It is with lifting test water tank that weir water-level gauge static characteristics in < < Dam Safety Instrumentation verification test rules > > (SL530-2012) detects testing tool equipment, carry out the underwater penetration of controlled quentity controlled variable mill weir water-level gauge, and measure lifting value by digital display scale.Due to weir water-level gauge of a great variety, characteristic is totally different, after < < test specification > > issues, implements, the weir water-level gauge verification test device that in standard, regulation is used is unified, the general product of formation not.
As the verification test of direct submerged sensor adopts high-precision pressure gauge more, indirectly float type weir measuring water-level gauge adopt mechanical type lifting device, by the variation of test force, converse displacement, owing to there being conversion relation, just relevant with the physical dimension of float, the fine difference of Floater Structure size, will cause the error of test result.Number of patent application is that 201220182971.9 " automatic gauge detector " discloses a kind of water-level gauge inspection device, comprise calculating and control data processor, carry water lifting table drive part, moving displacement measure portion, synchro measure part, power unit and tested water-level gauge message exchange part, above-mentioned calculating is controlled data processor and is connected separately with the part such as driving, measurement, power supply respectively.By computer control and detection, realization is carried the data management of the information such as rising or falling speed, displacement, the control of working time and operational factor of water hoistable platform to self, the data that the above-mentioned movable information of this hoistable platform obtaining and tested automatic gauge are detected under synchronous operation state are compared and analysis, thereby obtain the performance parameter of detected automatic gauge.This technology has improved the automaticity of detection and the precision of detection to a certain extent, but it is mainly the detection for water-level gauge used in fluid model test, does not comprise the instrument testing test of field prototype measurement seepage flow, and applicability is narrower.
At present, the device of verification test weir water-level gauge static characteristics parameter is mostly more single, and dissimilar weir water-level gauge needs to adopt corresponding check out test set, and versatility is not strong, and mostly has the flaw of the lower and trivial operations of precision.Poor based on current caliberating device versatility, the factors such as high-precision calibrating device shortage, development and high, the strong operability of exploitation degree of accuracy, the weir water-level gauge verification test device that versatility is wide just seem very necessary.
Summary of the invention
The utility model object is, a kind of nested static level balanced type weir water-level gauge verification test device is provided, and this device is by test bucket, water filling bucket, draining bucket, water injection valve, draining valve, communicating pipe, liquid level observing pipe, magnetostriction liquidometer, test platform, adjustable supports lower margin, support bar, slip adjustment rack, Manual angular position platform, tested water-level gauge suspension clamp, fixed head, bubble and scale, water filling bucket rack platform, nested bucket, tested water-level gauge, tested water-level gauge floating drum, liquid level gauge measuring staff, sliding rack, stopcock, X axis regulates knob, Y-axis regulates knob, pliers type clip and gear form, by controlling water filling bucket, between draining bucket and test bucket, plumbing relation realizes the variation of test bucket fluctuation in stage value, and adopt high precision magnetostriction type liquid level gauge to measure test bucket position height, meeting under the prerequisite of checkout equipment self resolving power, realizing the static characteristics verification test of the seepage flow monitoring instrument of direct putting type and indirect two kinds of common type of float-type.This apparatus structure simplicity of design, survey are read intuitively, versatility is wide, degree of accuracy is high, strong operability, and measured object is easy to loading and unloading, can meet the functional demand of water conservancy construction seepage flow monitoring instrument static characteristics parametric test.
Nested static level balanced type weir water-level gauge verification test device described in the utility model, this device is by test bucket, water filling bucket, draining bucket, water injection valve, draining valve, communicating pipe, liquid level observing pipe, magnetostriction liquidometer, test platform, adjustable supports lower margin, support bar, slip adjustment rack, Manual angular position platform, tested water-level gauge suspension clamp, fixed head, bubble and scale, water filling bucket rack platform, nested bucket, tested water-level gauge, tested water-level gauge floating drum, liquid level gauge measuring staff, sliding rack, stopcock, X axis regulates knob, Y-axis regulates knob, pliers type clip and gear form, at the upper fixing test bucket (1) respectively of test platform (9), support bar (11) and draining bucket rack platform (17), on draining bucket rack platform (17), be provided with water filling bucket (2), water filling bucket (2) was connected with test bucket (1) by communicating pipe (6), and the water injection valve (4) that regulates water injection rate is installed on communicating pipe (6), in draining bucket rack platform (17), be provided with draining bucket (3), draining bucket (3) was connected with test bucket (1) by communicating pipe (6), and the draining valve (5) that regulates water discharge is installed on communicating pipe (6).
In test bucket (1), fix respectively nested bucket (18) and liquid level gauge measuring staff (21), at the upper fixedly liquid level gauge float (22) of liquid level gauge measuring staff (21), in nested bucket (18), be provided with tested water-level gauge floating drum (20), on nested bucket (18), have the impartial hoop permeable hole (29) of arranging, top at test bucket (1) is provided with fixed head (15), magnetostriction liquidometer (8) is installed on fixed head (15), magnetostriction liquidometer (8) is connected with one end of liquid level gauge measuring staff (21), on the sidewall of test bucket (1), by stopcock (25), be connected with the liquid level observing pipe (7) that indicates level scale.
On the top of support bar (11), be fixed with sliding rack (23), slip adjustment rack (12) is set on support bar (11), on slip adjustment rack (12), be provided with positioning knob (24), the gear (31) of installing in positioning knob (24) is moving with positioning knob (24) coaxial parallel-connection, gear (31) and sliding rack (23) engagement, Manual angular position platform (13) is fixed on slip adjustment rack (12), on Manual angular position platform (13), being respectively equipped with X axis regulates knob (27) and Y-axis to regulate knob (28), one end of tested water-level gauge suspension clamp (14) and Manual angular position platform (13) are connected and fixed, the other end of tested water-level gauge suspension clamp (14) is pliers type clip (30), by the fixing tested water-level gauge (19) of fixture tightening knob (26), tested water-level gauge (19) is placed in tested water-level gauge floating drum (20).
On test platform (9), be fixed with bubble and scale (16), in the bottom of test platform (9), be provided with for adjusting the adjustable supports lower margin (10) of level.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is left side of the present utility model schematic diagram;
Fig. 3 is slip adjustment rack cut-open view of the present utility model;
Fig. 4 is the structural representation of the nested bucket of the utility model intercommunication.
Legend:
1, test bucket, 2, water filling bucket, 3, draining bucket, 4, water injection valve, 5, draining valve, 6, communicating pipe, 7, liquid level observing pipe, 8. magnetostriction liquidometer, 9, test platform, 10, adjustable supports lower margin, 11, support bar, 12, slip adjustment rack, 13, Manual angular position platform, 14, tested water-level gauge suspension clamp, 15, magnetostriction liquidometer fixed head, 16, bubble and scale, 17, water filling bucket rack platform, 18, the nested bucket of intercommunication, 19, tested water-level gauge, 20, tested water-level gauge floating drum, 21, liquid level gauge measuring staff, 22, liquid level gauge float, 23, sliding rack, 24, positioning knob, 25, stopcock, 26, fixture tightening knob, 27, X axis regulates knob, 28, Y-axis regulates knob, 29, hoop permeable hole, 30, pliers type clip, 31, gear.
Embodiment
The utility model further describes by reference to the accompanying drawings, and provides specific embodiment:
As depicted in figs. 1 and 2, nested static level balanced type weir water-level gauge verification test device described in the utility model, this device is by test bucket, water filling bucket, draining bucket, water injection valve, draining valve, communicating pipe, liquid level observing pipe, magnetostriction liquidometer, test platform, adjustable supports lower margin, support bar, slip adjustment rack, Manual angular position platform, tested water-level gauge suspension clamp, fixed head, bubble and scale, water filling bucket rack platform, nested bucket, tested water-level gauge, tested water-level gauge floating drum, liquid level gauge measuring staff, sliding rack, stopcock, X axis regulates knob, Y-axis regulates knob, pliers type clip and gear form, difference fixing test bucket 1 on test platform 9, support bar 11 and draining bucket rack platform 17, on draining bucket rack platform 17, be provided with water filling bucket 2, water filling bucket 2 was connected with test bucket 1 by communicating pipe 6, and the water injection valve 4 that adjusting water injection rate is installed on communicating pipe 6 is for regulating inflow, in draining bucket rack platform 17, be provided with draining bucket 3, draining bucket 3 was connected with test bucket 1 by communicating pipe 6, and the draining valve 5 that adjusting water discharge is installed on communicating pipe 6 is for regulating water discharge, the platform that test platform 9 is horizon adjustable, in the bottom of test platform 9, adjustable supports lower margin 10 is installed, on test platform 9, be fixed with bubble and scale 16, by tuning adjustable support lower margin 10, the position that coordinates bubble in observation bubble and scale 16, test platform 9 is adjusted into level,
At test bucket 1 interior nested bucket 18 and the liquid level gauge measuring staff 21 fixed respectively, fixing liquid level gauge float 22 on liquid level gauge measuring staff 21, is provided with tested water-level gauge floating drum 20 in nested bucket 18, have the impartial hoop permeable hole 29 of arranging on nested bucket 18;
Top at test bucket 1 is provided with fixed head 15, magnetostriction liquidometer 8 is installed on fixed head 15, adopt commercially available KYDM type digital display high-precision magnetostriction liquidometer, its resolution reaches 5um, can meet the code requirement to measuring accuracy, its data are for the parameter of the static characteristics of calculated amount mill weir water-level gauge, one end of liquid level gauge measuring staff 21 is connected with magnetostriction liquidometer 8, on the sidewall of test bucket 1, by stopcock 25, be connected with the liquid level observing pipe 7 that indicates level scale, liquid level observing pipe 7 is for artificial skimming reading test bucket liquid level situation of change, indication Test Operator controls water injection valve 4 and draining valve 5 is adjusted the liquid level of testing bucket 1,
Manual angular position platform 13 is fixed on slip adjustment rack 12, Manual angular position platform 13 is commercially available position, ZT301MC15 type angle platform, on Manual angular position platform 13, being respectively equipped with X axis regulates knob 27 and Y-axis to regulate knob 28, by the X axis tuning on Manual angular position platform 13, regulate knob 27 and Y-axis to regulate knob 28, make tested water-level gauge 19 and tested water-level gauge floating drum 20 in vertical vertical state to be measured, one end of tested water-level gauge suspension clamp 14 and Manual angular position platform 13 are connected and fixed, the other end of tested water-level gauge suspension clamp 14 is pliers type clip 30, by the fixing tested water-level gauge 19 of fixture tightening knob 26, tested water-level gauge 19 is placed on tested water-level gauge floating drum 20) in,
As shown in Figure 3, on the top of support bar 11, be fixed with sliding rack 23, slip adjustment rack 12 is set on support bar 11, on slip adjustment rack 12, be provided with positioning knob 24, gear 31 in the 24 interior installations of positioning knob is moving with positioning knob 24 coaxial parallel-connections, by forward and reverse rotation positioning knob 24, can drive slip adjustment rack 12 to move up and down, tested water-level gauge 19 is adjusted to suitable test position, gear 31 and sliding rack 23 engagements;
As shown in Figure 4, nested bucket 18 can be set to the bucket of a plurality of different-diameters, according to the conventional supporting customization of float type weir measuring water-level gauge spar diameter size, the internal diameter of different intercommunication nested type buckets is according to regulation in < < Dam Safety Instrumentation verification test rules > > (SL530-2012): the ratio of type vibration wire water-level gauge floating drum sectional area and the interior sectional area S of condenser type weir measuring instrument flooding tube (urceolus) and water tank water surface area S1 should meet that to be less than 0.1(be S1:S≤1:10) requirement under, according to the supporting customization of float type weir measuring water-level gauge spar diameter size of a few money common type in reality or prototype, on the bucket wall of the nested bucket 18 of each intercommunication, evenly have horizontal width and be less than the hoop permeable hole 29 that 1mm inside and outside wall connects, be beneficial to test bucket and the free flow of nested bucket liquid level and balance, and can avoid and eliminate the error producing because of water-level fluctuation,
In use, inspection testing method according to < < Dam Safety Instrumentation verification test rules > > (SL530-2012), in verification test: test bucket 1 and draining bucket 3 are empty bucket, water filling bucket 2 is bucketful, and water injection valve 4 and draining valve 5 are in closure state;
First tune 4 adjustable supports lower margins 10, by bubble and scale 16, test platform 9 is adjusted into horizontality;
According to the diameter of tested water-level gauge floating drum 20, select the nested bucket 18 of intercommunication of suitable size, and nested bucket 18 is placed in to the position that takes in test bucket 1;
By alignment jig tightening knob 26 by tested water-level gauge 19 and with it supporting tested water-level gauge floating drum 20 be fixed in sensor suspension clamp 14, by regulating the angle of Manual angular position platform 13 to make tested water-level gauge floating drum 20 in the nested bucket of intercommunication 18 positions, axis, by the positioning knob 24 tuning on slip adjustment rack 12, adjust up and down tested water-level gauge 19 again, make tested water-level gauge floating drum 20 be placed in the nested bucket of intercommunication 18 bottoms, to reduce or to avoid because proving installation is out-of-level or sensor, float hang the systematic error that out of plumb causes verification test;
Test record: open water injection valve 4, static level equilibrium principle according to liquid, liquid in water filling bucket 2 is by flow in test bucket 1 communicating pipe 6, observe liquid level observing pipe 7 and survey and read magnetostriction liquidometer 8, when test bucket 1 liquid level rises to the 1st group of test liquid level, close water injection valve 4, observe and record the reading of high precision magnetostriction liquidometer 8 and tested water-level gauge 19, after survey is read and is recorded, opening water injection valve 4 makes the liquid of water filling bucket 2 by flowing into communicating pipe 6 in test bucket 1 again, when reaching the 2nd group of test liquid level, test bucket 1 liquid level closes water injection valve 4, survey read record data, according to above step, carry out the 3rd group, the 4th group until the verification test work of the 6th group,
Completing water filling trace detects after engineering, and then carry out the testing of draining return, opening water discharge valve 5, liquid in test bucket 1 was flowed in draining bucket 3 by communicating pipe 6, when in return detects, test bucket 1 liquid level drops to the 6th group of test liquid level of trace, close draining valve 5, survey read record data complete the operation of the 1st group of return, opening water discharge valve 5 again, make test bucket 1 liquid level drop to the 5th group of test liquid level of trace, survey read record data complete the operation of the 2nd group of return, according to above-mentioned steps, carry out the 3rd group of return, the 4th group until the verification test work of the 6th group,
Repeat rising and the step-down operation of above-mentioned test bucket 1 liquid level, at tested water-level gauge floating drum 20 during in different liquid level, magnetostriction liquidometer 8 and tested water-level gauge 19 are surveyed and read, complete the 2nd circulation, the 3rd circulation ... the n time loop test;
Tested water-level gauge 19 and tested water-level gauge floating drum 20 are taken out from 14 dismountings of sensor suspension clamp, the nested bucket 18 of intercommunication is taken out from test bucket 1, water in test bucket 1 is drained, so far, the work of the static characteristics verification test of whole tested water-level gauge 19 part completes again;
Verification test data computation processing method (method for computing data refers to the appendix A-E of these rules) according to < < Dam Safety Instrumentation verification test rules > > (SL530-2012), obtain tested water-level gauge 19 sensitivity coefficients, resolving power, nonlinearity, lag behind, the static characteristics such as nonrepeatability and composition error data, again by the static characteristics parameter of the static characteristics data of these test acquisitions and the regulation in < < Dam Safety Instrumentation verification test rules > > (SL530-2012) is compared (5.2 joints that static characteristics technical requirement refers to these rules), draw the evaluation of tested water-level gauge (19) physics static characteristics,
Because the resolution of magnetostriction liquidometer 8 is 5um, nonlinearity < ± 0.05%F.S. (minimum ± 50um), nonrepeatability < ± 0.002%F.S. (minimum ± 2.5um), temperature coefficient: 0.007%F.S./℃, hysteresis < 4 um, these precision indexs meet the requirement (static characteristics technical requirement refers to 5.2 joints of these rules) of in < < Dam Safety Instrumentation verification test rules > > (SL530-2012), weir water-level gauge static characteristics being tested and being tested completely, wherein the resolution of magnetostriction liquidometer 8 is the digital display scale of 0.05mm far above adopting resolving power in standard, again because total design adopts test bucket and note, static level balance mode between draining bucket, the mode of such SEA LEVEL VARIATION and the observation of weir water-level gauge in weir environment of living in are basic identical, the result of verification test more meets on-the-spot installation, monitoring is actual, and the static characteristics that is applicable to the weir water-level gauge of two types of detection direct putting type and float-types.
Claims (4)
1. a nested static level balanced type weir water-level gauge verification test device, is characterized in that this device is by test bucket, water filling bucket, draining bucket, water injection valve, draining valve, communicating pipe, liquid level observing pipe, magnetostriction liquidometer, test platform, adjustable supports lower margin, support bar, slip adjustment rack, Manual angular position platform, tested water-level gauge suspension clamp, fixed head, bubble and scale, water filling bucket rack platform, nested bucket, tested water-level gauge, tested water-level gauge floating drum, liquid level gauge measuring staff, sliding rack, stopcock, X axis regulates knob, Y-axis regulates knob, pliers type clip and gear form, at the upper fixing test bucket (1) respectively of test platform (9), support bar (11) and draining bucket rack platform (17), on draining bucket rack platform (17), be provided with water filling bucket (2), water filling bucket (2) was connected with test bucket (1) by communicating pipe (6), and the water injection valve (4) that regulates water injection rate is installed on communicating pipe (6), in draining bucket rack platform (17), be provided with draining bucket (3), draining bucket (3) was connected with test bucket (1) by communicating pipe (6), and the draining valve (5) that regulates water discharge is installed on communicating pipe (6).
2. device as claimed in claim 1, it is characterized in that fixing respectively nested bucket (18) and liquid level gauge measuring staff (21) in test bucket (1), at the upper fixedly liquid level gauge float (22) of liquid level gauge measuring staff (21), in nested bucket (18), be provided with tested water-level gauge floating drum (20), on nested bucket (18), have the impartial hoop permeable hole (29) of arranging, top at test bucket (1) is provided with fixed head (15), magnetostriction liquidometer (8) is installed on fixed head (15), magnetostriction liquidometer (8) is connected with one end of liquid level gauge measuring staff (21), on the sidewall of test bucket (1), by stopcock (25), be connected with the liquid level observing pipe (7) that indicates level scale.
3. device as claimed in claim 1, it is characterized in that being fixed with sliding rack (23) on the top of support bar (11), slip adjustment rack (12) is set on support bar (11), on slip adjustment rack (12), be provided with positioning knob (24), the gear (31) of installing in positioning knob (24) is moving with positioning knob (24) coaxial parallel-connection, gear (31) and sliding rack (23) engagement, Manual angular position platform (13) is fixed on slip adjustment rack (12), on Manual angular position platform (13), being respectively equipped with X axis regulates knob (27) and Y-axis to regulate knob (28), one end of tested water-level gauge suspension clamp (14) and Manual angular position platform (13) are connected and fixed, the other end of tested water-level gauge suspension clamp (14) is pliers type clip (30), by the fixing tested water-level gauge (19) of fixture tightening knob (26), tested water-level gauge (19) is placed in tested water-level gauge floating drum (20).
4. device as claimed in claim 1, is characterized in that being fixed with bubble and scale (16) on test platform (9), is provided with for adjusting the adjustable supports lower margin (10) of level in the bottom of test platform (9).
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| CN201420238378.0U CN203824621U (en) | 2014-05-10 | 2014-05-10 | Device for detecting and testing nested static force water level balanced type measuring weir water gauge |
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| CN201420238378.0U CN203824621U (en) | 2014-05-10 | 2014-05-10 | Device for detecting and testing nested static force water level balanced type measuring weir water gauge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105364742A (en) * | 2014-09-12 | 2016-03-02 | 东风汽车电子有限公司 | Calibration clamp of oil sensor |
| CN106153003A (en) * | 2016-06-30 | 2016-11-23 | 嘉兴同禾传感技术有限公司 | A kind of constant level standard apparatus for static liquid level and method |
| CN108414028A (en) * | 2018-05-23 | 2018-08-17 | 湖南农业大学 | Weir hydraulic parameters measuring device |
| CN109489776A (en) * | 2018-11-15 | 2019-03-19 | 中广核工程有限公司 | A kind of nuclear power station PTR pond liquid level meter verification experimental rig and its test method |
| CN110285836A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Inclination angle type hydrostatic level calibrating installation and calibration method |
| CN110369229A (en) * | 2019-07-27 | 2019-10-25 | 马鞍山市智新纳米材料有限公司 | A kind of adjustable ceramic coating scraper component of vertical position |
| CN111044014A (en) * | 2019-12-16 | 2020-04-21 | 杭州鲁尔物联科技有限公司 | Static level tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105364742A (en) * | 2014-09-12 | 2016-03-02 | 东风汽车电子有限公司 | Calibration clamp of oil sensor |
| CN106153003B (en) * | 2016-06-30 | 2020-05-12 | 嘉兴同禾传感技术有限公司 | Constant liquid level reference device and method for static force leveling system |
| CN106153003A (en) * | 2016-06-30 | 2016-11-23 | 嘉兴同禾传感技术有限公司 | A kind of constant level standard apparatus for static liquid level and method |
| CN108414028A (en) * | 2018-05-23 | 2018-08-17 | 湖南农业大学 | Weir hydraulic parameters measuring device |
| CN108414028B (en) * | 2018-05-23 | 2024-03-22 | 湖南农业大学 | Hydraulic parameter measuring device for water measuring weir |
| CN109489776B (en) * | 2018-11-15 | 2021-06-25 | 中广核工程有限公司 | Nuclear power station PTR pool liquid level meter calibration test device and test method thereof |
| CN109489776A (en) * | 2018-11-15 | 2019-03-19 | 中广核工程有限公司 | A kind of nuclear power station PTR pond liquid level meter verification experimental rig and its test method |
| CN110285836A (en) * | 2019-07-22 | 2019-09-27 | 湖南省计量检测研究院 | Inclination angle type hydrostatic level calibrating installation and calibration method |
| CN110285836B (en) * | 2019-07-22 | 2023-11-03 | 湖南省计量检测研究院 | Inclination angle type hydrostatic level calibrating device and calibrating method |
| CN110369229A (en) * | 2019-07-27 | 2019-10-25 | 马鞍山市智新纳米材料有限公司 | A kind of adjustable ceramic coating scraper component of vertical position |
| CN111044014A (en) * | 2019-12-16 | 2020-04-21 | 杭州鲁尔物联科技有限公司 | Static level tester |
| CN111044014B (en) * | 2019-12-16 | 2021-10-08 | 杭州鲁尔物联科技有限公司 | Static level tester |
| CN112880773A (en) * | 2021-01-13 | 2021-06-01 | 南京工业大学 | Convenient multi-functional capacitanc level sensor fixing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 |