CN112284325A - Dynamic testing method for ship-receiving chamber deflection of ship lift - Google Patents
Dynamic testing method for ship-receiving chamber deflection of ship lift Download PDFInfo
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- CN112284325A CN112284325A CN202011235864.3A CN202011235864A CN112284325A CN 112284325 A CN112284325 A CN 112284325A CN 202011235864 A CN202011235864 A CN 202011235864A CN 112284325 A CN112284325 A CN 112284325A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- Fluid Mechanics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
A row of high-precision wave height sensors are arranged on a floor on one side of a ship receiving chamber water area of a ship lift along the way, the liquid level position of water in the ship receiving chamber is measured in real time, the characteristic that the water in the ship receiving chamber is always a horizontal plane is utilized, the wave height sensors and the floor on the ship receiving chamber side are tightly fixed, the deflection change generated in the running of the ship receiving chamber is completely reflected on the water surface change measured by the wave height sensors, and the real-time deflection of the ship receiving chamber is obtained according to the measurement data of the wave height sensors.
Description
Technical Field
The invention relates to a method, in particular to a dynamic testing method for ship lift chamber deflection, and belongs to the field of navigation building debugging and observation.
Background
The ship lift is one of two main types of navigation buildings, and is particularly suitable for navigation of high dams above 70 m. In recent years, China has built a plurality of large ship lifts in sequence, such as three gorges ship lift of 'big Chinese ballast', a landscape flood hydraulic ship lift invented by China independently, a first three-level continuous beachtop ship lift in the world and the like. The development of the ship lift in China is rapid, but the related technology and experience are in a relatively lagged state due to late starting. The system debugging of a plurality of newly-built large-scale ship lifts is of great importance, the working performance of equipment facilities of the ship lifts, the running characteristics of the ship lifts and the like are mastered through debugging observation, the problems of the ship lifts are found in time and solved, and a foundation is laid for the ship lifts to smoothly enter pilot navigation running.
The ship-carrying chamber of the ship lift is loaded with a water body and a ship with a certain depth, and is an important equipment facility of the ship lift, the ship-carrying chamber is lifted by a plurality of steel wire ropes through a driving mechanism to realize the dam-crossing of the ship, and the ship-carrying chamber can generate certain longitudinal bending deformation under the comprehensive action of self weight, water body load and steel wire rope tension due to the large size of the ship-carrying chamber. The trim of ship reception chamber is stable is the important factor of ship lift safe operation, and there is stronger interact in ship reception chamber and water, if the small slope has appeared in ship reception chamber under some eccentric loading effect, the slope of ship reception chamber can cause the water load to appear off-centre, makes the eccentric load that acts on ship reception chamber further increase, if ship reception chamber's anti-inclination ability is not enough, the trend that constantly worsens can appear, finally takes place the longitudinal instability of ship reception chamber and topples. Particularly, as the lifting height of the ship lift is increased continuously, if the lifting height of the second-level ship lift of the building shoal reaches 127m, the trim of the ship receiving chamber in the running process can be accumulated continuously due to installation and manufacturing errors of a reel of the ship lift, routing errors of a steel wire rope and the like, and the trim stability of the ship receiving chamber is influenced. Therefore, in the lifting operation process of the ship lift ship reception chamber, attention needs to be paid to longitudinal deformation, namely deflection, of the ship reception chamber, the levelness of the ship reception chamber is judged in time, and the operation safety of the ship lift ship reception chamber is guaranteed. At present, for the observation of ship-carrying chamber deflection, a level gauge or a total station is mainly used for testing under the condition that the ship-carrying chamber stops at a certain elevation and does not operate, so that the static deflection of the ship-carrying chamber is obtained, but the dynamic deflection of the ship-carrying chamber in the operation process cannot be obtained. In view of the importance of dynamic testing of ship lift chamber deflection and the shortcomings of the current testing technology, it is necessary to provide a dynamic testing method of ship lift chamber deflection.
Disclosure of Invention
The invention provides a dynamic deflection testing method for a ship lift ship reception chamber, which aims to overcome the defects of the existing dynamic deflection testing technology for the ship lift ship reception chamber, so that the deflection change of the ship lift ship reception chamber can be mastered in real time, and the lifting operation safety of the ship lift can be guaranteed.
The technical scheme for achieving the aim of the invention is as follows: a row of high-precision wave height sensors are arranged on a floor on one side of a ship receiving chamber water area of a ship lift along the way, the liquid level position of water in the ship receiving chamber is measured in real time, the characteristic that the water in the ship receiving chamber is always a horizontal plane is utilized, the wave height sensors and the ship receiving chamber side floor are tightly fixed, the deflection change generated in the running process of the ship receiving chamber is completely reflected on the water surface change measured by the wave height sensors, and the real-time deflection of the ship receiving chamber is obtained according to the measurement data of the wave height sensors.
The invention relates to a dynamic testing method for ship reception chamber deflection of a ship lift, which comprises the following implementation steps:
(1) a plurality of high-precision wave height sensors are arranged in the inner part of the floor plate at one side of the ship bearing chamber along the way, and the number is recorded asnThe wave height sensor is vertically inserted into a water body, the top of the wave height sensor is fixed with the floor plate, and water surface changes along the way in the ship bearing chamber can be measured in real time;
(2) the ship reception chamber stops at a certain elevation, the water level in the ship reception chamber is stable, and the data of all wave height sensors are obtained and recorded ash i （i= 1, n) Measuring the ship-bearing chamber deflection of each wave height sensor position by a level gauge or a total station, and recording the deflection asd i （i= 1, n）；
(3) When the ship reception chamber is in lifting operation,nthe wave height sensor records the data of the water surface in real time, if the data at any moment ish j （j = 1, n) The data of the wave height sensor is changed toδh k = h i - h j （i、j、k = 1, n) The deflection of the ship reception chamber at the moment isd j = d i + δh k （i、j、k = 1, n）。
Number of wave height sensor arrangementsnThe method can be determined according to the requirement of a deflection test, about 10 sensors can be generally arranged, and the length and the installation position of the wave height sensor can ensure that the wave height sensor cannot be completely separated from the water surface.
Because the length of the ship reception chamber is very long and is generally larger than 50m, and the deflection of the ship reception chamber is generally only 2-5 cm, the vertical inclination of the wave height sensor caused by the deflection change can be ignored.
The invention has the following advantages:
(1) the test method is ingenious, simple and convenient and easy to realize;
(2) the testing precision is very high, and the dynamic real-time accurate testing of the ship reception chamber deflection is realized.
Drawings
FIG. 1 is a longitudinal sectional view of a ship reception chamber in which a wave height sensor is disposed;
FIG. 2 is a cross-sectional view of a ship reception chamber after a wave height sensor is arranged;
fig. 3 is a schematic diagram of a deformation of the ship reception chamber at a certain moment of operation;
figure 4 shows the deflection of the ship reception chamber at a certain moment in the operation of the ship reception chamber obtained by the test.
Detailed Description
The embodiments are provided below in conjunction with the accompanying drawings, and the present invention is described in detail.
Example one
In a certain domestic ship lift, the length of a water area of a ship receiving chamber is 70m, the width of the water area is 12m, the water depth is 2.5m, the attached drawing 1 is a longitudinal section of the ship receiving chamber after a wave height sensor is arranged, the attached drawing 2 is a transverse section of the ship receiving chamber after the wave height sensor is arranged, the attached drawing 3 is a deformation schematic diagram of the ship receiving chamber at a certain moment in operation, the attached drawing 4 is the flexibility of the ship receiving chamber at a certain moment in operation, which is obtained through testing, the attached drawing 1 is the ship receiving chamber, the attached drawing 2 is a water body in the ship receiving chamber, the attached drawing 3 is a steel wire rope, the attached drawing 4 is the wave height sensor, the attached drawing 5 is a vertical.
The dynamic testing method for the ship receiving chamber deflection of the ship lift is adopted to test the deflection of the ship receiving chamber at any moment, and the implementation steps are as follows:
(1) 9 high-precision wave height sensors 4 are arranged in a floor 5 on one side of the ship-bearing chamber 1 along the way, the length of each wave height sensor 4 is 1 meter, the wave height sensors are vertically inserted into the water body 2, the top of each wave height sensor is tightly fixed with the floor 5, and the water surface change along the way in the ship-bearing chamber 1 can be measured in real time;
(2) the ship reception chamber 1 stops at a certain height, the water level in the ship reception chamber 1 is stable, and the data of all the wave height sensors 4 are obtained at the moment, and the data of 9 sensors are assumedh i Respectively 20cm, 21cm, 20cm, 19cm, 21cm, 20cm, 18cm and 19cm, and measuring ship-carrying chamber deflection at each wave height sensor 4 position with a level gauge or a total stationd i Respectively 0cm, 1cm, 0cm, 2cm, 0cm, 1cm, 0 cm;
(3) when the steel wire rope 3 pulls the ship reception chamber 4 to move up and down, the 9 wave height sensors 4 record the data of the water surface in real time, and if the data at a certain momenth j 19cm, 20cm, 18cm, 15cm, 16cm, 17cm, 18cm, 17cm, and 18cm, respectively, the data change of the wave height sensor 4 is determined according to the data changeδh k = h i - h j （i、j、k = 1, 9), respectively, 1cm, 2cm, 4cm, 3cm, 4cm, 2cm, 1cm, the ship reception chamber deflection at that time is calculated according tod j = d i + δh k （i、j、k = 1, 9) respectively of 1cm, 2cm, 3cm, 4cm, 5cm, 4cm, 3cm, 2cm, 1cm, the deflection curve 6 being shown in fig. 4.
The dynamic deflection of the ship reception chamber in the running process can be accurately obtained in real time according to the method and the steps.
Therefore, the method can accurately obtain the deflection of the ship reception chamber at any moment in the running process in real time, and provides an important scientific basis for the safe running management of the ship lift.
Claims (2)
1. A dynamic testing method for ship-carrying chamber deflection of a ship lift is characterized in that a row of high-precision wave height sensors are arranged on a floor on one side of a ship-carrying chamber water area of the ship lift along the journey to measure the liquid level position of a water body in the ship-carrying chamber in real time, the characteristic that the water body in the ship-carrying chamber is always a horizontal plane is utilized, the wave height sensors and the floor on the side of the ship-carrying chamber are tightly fixed, deflection change generated in the running of the ship-carrying chamber is completely reflected on the water surface change measured by the wave height sensors, and the real-time deflection of the ship-carrying chamber can be obtained according to the measurement data of the wave height sensors.
2. A dynamic testing method for ship lift chamber deflection is characterized by comprising the following implementation steps:
(1) a plurality of high-precision wave height sensors are arranged in the inner part of the floor plate at one side of the ship bearing chamber along the way, and the number is recorded asnThe wave height sensor is vertically inserted into a water body, the top of the wave height sensor is fixed with the floor plate, and water surface changes along the way in the ship bearing chamber can be measured in real time;
(2) the ship reception chamber stops at a certain elevation, the water level in the ship reception chamber is stable, and the data of all wave height sensors are obtained and recorded ash i （i= 1, n) Measuring the ship-bearing chamber deflection of each wave height sensor position by a level gauge or a total station, and recording the deflection asd i （i= 1, n）；
(3) When the ship reception chamber is in lifting operation,nthe wave height sensor records the data of the water surface in real time, if the data at any moment ish j （j = 1, n) The data of the wave height sensor is changed toδh k = h i - h j （i、j、k = 1, n) The deflection of the ship reception chamber at the moment isd j = d i + δh k （i、j、k = 1, n）。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011235864.3A CN112284325A (en) | 2020-11-09 | 2020-11-09 | Dynamic testing method for ship-receiving chamber deflection of ship lift |
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| CN202011235864.3A CN112284325A (en) | 2020-11-09 | 2020-11-09 | Dynamic testing method for ship-receiving chamber deflection of ship lift |
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| CN112284325A true CN112284325A (en) | 2021-01-29 |
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| CN103063382A (en) * | 2012-12-20 | 2013-04-24 | 华南理工大学 | Deflection automatic measuring device and measuring method thereof |
| CN203224231U (en) * | 2013-05-16 | 2013-10-02 | 西安航天自动化股份有限公司 | Elevation checking system of ship reception chamber of ship lift |
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| CN105806246A (en) * | 2016-05-23 | 2016-07-27 | 中国长江三峡集团公司 | Measuring method for ship lift chamber structure deformation |
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| CN109100098A (en) * | 2017-09-05 | 2018-12-28 | 石家庄铁道大学 | A kind of opposed type deflection of bridge span remote supervision system and monitoring method |
| CN109783908A (en) * | 2018-12-29 | 2019-05-21 | 黄河水利委员会黄河水利科学研究院 | Waterpower type ship elevator ship reception chamber longitudinal direction antidumping theoretical analysis method |
| CN111336957A (en) * | 2020-03-09 | 2020-06-26 | 江苏远望仪器集团有限公司 | Floating dock deflection accurate measurement method based on mathematical modeling |
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2020
- 2020-11-09 CN CN202011235864.3A patent/CN112284325A/en active Pending
Patent Citations (11)
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| CN203224231U (en) * | 2013-05-16 | 2013-10-02 | 西安航天自动化股份有限公司 | Elevation checking system of ship reception chamber of ship lift |
| CN104709440A (en) * | 2015-04-09 | 2015-06-17 | 上海船厂船舶有限公司 | On-water deflection measuring method for ship |
| CN204854715U (en) * | 2015-07-01 | 2015-12-09 | 重庆大唐国际彭水水电开发有限公司 | Ship lift ship reception chamber position survey of fire hole device |
| CN105806246A (en) * | 2016-05-23 | 2016-07-27 | 中国长江三峡集团公司 | Measuring method for ship lift chamber structure deformation |
| CN106247995A (en) * | 2016-09-05 | 2016-12-21 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of ship lift guide rail parallelism measuring method |
| CN109100098A (en) * | 2017-09-05 | 2018-12-28 | 石家庄铁道大学 | A kind of opposed type deflection of bridge span remote supervision system and monitoring method |
| CN109783908A (en) * | 2018-12-29 | 2019-05-21 | 黄河水利委员会黄河水利科学研究院 | Waterpower type ship elevator ship reception chamber longitudinal direction antidumping theoretical analysis method |
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Non-Patent Citations (1)
| Title |
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| 王新等: "大型升船机船厢出入水受力特性原型观测", 《（2）承船厢停在某一高程，承船厢内水面平稳，此时得到所有波高传感器的数据，记为HI（I= 1, N），用水准仪或全站仪，测量各个波高传感器位置的承船厢挠度，记为DI（I= 1, N）；》 * |
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