CN103645118B - A kind of cylindrical pellet density measuring equipment and measuring method thereof - Google Patents
A kind of cylindrical pellet density measuring equipment and measuring method thereof Download PDFInfo
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- CN103645118B CN103645118B CN201310744111.9A CN201310744111A CN103645118B CN 103645118 B CN103645118 B CN 103645118B CN 201310744111 A CN201310744111 A CN 201310744111A CN 103645118 B CN103645118 B CN 103645118B
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Abstract
The present invention relates to fuel pellet fields of measurement, particularly a kind of cylindrical pellet density measuring equipment; It comprises: VTOL (vertical take off and landing) platform, precision rotating platform, laser triangulation displacement transducer, bottom platform, electronic balance, industrial PC computer; VTOL (vertical take off and landing) platform is arranged on bottom platform upper surface and can be elevated at vertical direction, precision rotating platform is arranged on VTOL (vertical take off and landing) platform and also can rotates along its central shaft, the laser triangulation displacement transducer that can move in the horizontal direction be arranged on bottom platform on and be positioned at by VTOL (vertical take off and landing) platform, electronic balance is arranged on the platform of described bottom; Laser triangulation displacement transducer, electronic balance are connected in industrial PC computer; The object of the present invention is to provide a kind of more intelligent, operation is easier, measurement data is faster, the cylindrical pellet density measuring equipment extremely low to cylindrical pellet damage in the measurements; The invention also discloses the measuring method of this cylindrical pellet density measuring equipment.
Description
Technical field
The present invention relates to fuel pellet fields of measurement, particularly a kind of cylindrical pellet density measuring equipment and measuring method thereof.
Background technology
The pellet major part related in prior art is fuel ball, be processed to cylindrical, need to measure its density, be generally measurement volumes, quality now, finally calculate density, that pellet is put into liquid in cubing, utilize the difference in height of liquid to calculate volume, but this situation will be damaged and the pellet surface measuring liquid comes into contact part, the use of the measured pellet of impact, this mode process is also very loaded down with trivial details, complicated operation.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency existing in prior art, there is provided a kind of more intelligent, operation is easier, measurement data is faster, the cylindrical pellet density measuring equipment extremely low to cylindrical pellet damage in the measurements, also provide simultaneously and make DATA REASONING more scientific, to the measuring method of extremely low this device of cylindrical pellet damage in the measurements.
In order to realize foregoing invention object, the invention provides following technical scheme:
A kind of cylindrical pellet density measuring equipment, it comprises: VTOL (vertical take off and landing) platform, precision rotating platform, laser triangulation displacement transducer, bottom platform, electronic balance, industrial PC computer;
Described VTOL (vertical take off and landing) platform is arranged on described bottom platform upper surface and can be elevated at vertical direction, described precision rotating platform is arranged on described VTOL (vertical take off and landing) platform and also can rotates along its central shaft, the described laser triangulation displacement transducer that can move in the horizontal direction to be arranged on the platform of described bottom and to be positioned at by described VTOL (vertical take off and landing) platform, and described electronic balance is arranged on the platform of described bottom;
Described laser triangulation displacement transducer, described electronic balance are connected in industrial PC computer, and described bottom platform is provided with embedded controller, and described embedded controller connects industrial PC computer.
The principle of the density measurement of apparatus of the present invention is for first to scan profile, volume is calculated by industrial PC computer, quality is measured again by described electronic balance, draw density data, important is scanning profile part, need to scan complete side, two ends due to cylindrical pellet are round platform, so need to scan two ends separately, the VTOL (vertical take off and landing) platform of energy vertical direction lifting, the precision rotating platform that can rotate along a vertical direction, the laser triangulation displacement transducer that can move in the horizontal direction, three coordinates together, above-mentioned scanning profile part can be completed, described electronic balance can measure the quality of cylindrical pellet, the described embedded controller installed and industrial PC computer coordinate makes apparatus of the present invention operation more intelligent, operate easier, measurement data is faster.
Preferably, described bottom platform upper surface is provided with VTOL (vertical take off and landing) moving guide rail, described VTOL (vertical take off and landing) moving guide rail is arranged on vertical direction, described VTOL (vertical take off and landing) platform main body is extrusion, its xsect is L shape, the bottom surface of described VTOL (vertical take off and landing) platform is on the upper surface of described bottom platform, described VTOL (vertical take off and landing) platform is arranged on described VTOL (vertical take off and landing) moving guide rail by the lateral surface of its vertical direction, this relatively simple for structure, the installation of VTOL (vertical take off and landing) moving guide rail also facilitates, one-piece construction convenient for maintaining or removable parts equipment.
Preferably, described bottom platform upper surface is provided with laser displacement sensor and moves horizontally guide rail, described laser triangulation displacement transducer is arranged on described laser displacement sensor and moves horizontally on guide rail, it is line slideway that described laser displacement sensor moves horizontally guide rail, this relatively simple for structure, the installation that laser displacement sensor moves horizontally guide rail also facilitates, one-piece construction convenient for maintaining or removable parts equipment, also more easily ensure the rectilinear movement coincidence measurement precision of laser triangulation displacement transducer at surface level.
Preferably, described precision rotating platform is cylinder table, described cylinder table is provided with the V-shaped groove for placing cylindrical pellet, described V-shaped groove two ends is communicated with the side of described cylinder table, when this structure makes cylindrical pellet horizontal positioned, stable can place, and ensure that when cylindrical pellet two ends scans, do not have the factor existence of any stop.
Preferably, described VTOL (vertical take off and landing) moving guide rail quantity is more than or equal to two, and structure is more stable, ensure that the precision of described VTOL (vertical take off and landing) platform when vertical direction is elevated.
Preferably, described embedded controller comprises: position switch, shaft-position encoder, described VTOL (vertical take off and landing) platform is provided with stepper motor with described VTOL (vertical take off and landing) moving guide rail junction, described laser triangulation displacement transducer is provided with stepper motor, and position switch controls described VTOL (vertical take off and landing) platform in the lifting of vertical direction, the translation in the horizontal direction of described laser triangulation displacement transducer; Shaft-position encoder controls the anglec of rotation of described precision rotating platform.
Preferably, described bottom platform is provided with roughness measuring instrument, for measuring cylindrical pellet surfaceness.
Compared with prior art, the beneficial effect of device in the present invention:
More intelligent, operation is easier, measurement data is faster, cylindrical pellet damage is in the measurements extremely low.
The invention also discloses a kind of measuring method of cylindrical pellet density measuring equipment, the steps include:
Step one, cylindrical pellet to be vertically positioned on precision rotating platform, to open described laser triangulation displacement transducer and make it maintain static, ensure that laser triangulation displacement transducer can scan cylindrical pellet side;
Step 2, control described embedded controller precision rotating platform is rotated along a vertical direction, make described VTOL (vertical take off and landing) platform be elevated at the axial rotary of precision rotating platform simultaneously, laser triangulation displacement transducer is scanned whole side with helical manner;
Step 3, the cylindrical pellet of vertically placing to be placed into horizontality on the V-shaped groove of described precision rotating platform;
Step 4, control described embedded controller precision rotating platform is rotated, make V-shaped groove length direction vertical with described laser triangulation displacement transducer moving direction;
Step 5, control described embedded controller and independently repeatedly complete these two actions that VTOL (vertical take off and landing) platform moves up and down, laser triangulation displacement transducer moves horizontally, pellet end face is scanned;
Step 6, scanned one end after, make precision rotating platform rotate 180 °, repeat step 5, make surveyed data through described industrial PC computer process, calculate the volume of cylindrical pellet;
Step 7, cylindrical pellet is moved on described electronic balance, measure the quality of cylindrical pellet;
Step 8, with the volume of the quality/cylindrical pellet of the cylindrical pellet of gained, obtain the density of cylindrical pellet.
Preferably, also step 9 is comprised: use described roughness measuring instrument to carry out roughness concentration to cylindrical pellet surface.
Preferably, also comprise step 10: take off and measure complete cylindrical pellet, move it to former lay down location, a more mobile unmeasured cylindrical pellet, repeat step one to nine.
Compared with prior art, the beneficial effect of method in the present invention:
DATA REASONING is more scientific, extremely low to cylindrical pellet damage in the measurements.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram to the scanning of cylindrical pellet side in the present invention.
Fig. 2 is the schematic diagram to the scanning of cylindrical pellet end face in the present invention.
Fig. 3 is the schematic diagram to the scanning of cylindrical pellet side in the present invention.
Fig. 4 is the sweep trace to the scanning of cylindrical pellet side in the present invention.
Fig. 5 is the schematic diagram to the scanning of cylindrical pellet end face in the present invention.
Fig. 6 is the structural representation of cylindrical pellet density measuring equipment in the present invention.
Fig. 7 is the structural representation of another duty of cylindrical pellet density measuring equipment in the present invention.
Fig. 8 is the schematic diagram by electronics balance measurement pellet quality in the present invention.
Fig. 9 is the schematic diagram of cylindrical pellet density measuring equipment electric part in the present invention.
Mark in figure: 1-VTOL (vertical take off and landing) platform, 2-precision rotating platform, 3-laser triangulation displacement transducer, platform bottom 4-, 5-electronic balance, 6-industrial PC computer, 7-embedded controller, 8-VTOL (vertical take off and landing) moving guide rail, 9-laser displacement sensor moves horizontally guide rail, 10-V shape groove, 11-position switch, 12-shaft-position encoder, 13-stepper motor, 14-roughness measuring instrument, 15-turning axle.
Embodiment
Below in conjunction with embodiment and embodiment, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
Embodiment 1
A kind of cylindrical pellet density measuring equipment, it comprises: VTOL (vertical take off and landing) platform 1, precision rotating platform 2, laser triangulation displacement transducer 3, bottom platform 4, electronic balance 5, industrial PC computer 6;
Described VTOL (vertical take off and landing) platform 1 is arranged on described bottom platform 4 upper surface and can be elevated at vertical direction, described precision rotating platform 2 is arranged on described VTOL (vertical take off and landing) platform 1 and also can rotates along its central shaft, the described laser triangulation displacement transducer 3 that can move in the horizontal direction is arranged on described bottom platform 4 and to be positioned at described VTOL (vertical take off and landing) platform 1 other, and described electronic balance 5 is arranged on described bottom platform 4;
Described laser triangulation displacement transducer 3, described electronic balance 5 are connected in industrial PC computer 6, electronic balance 5 is connected by RS232 interface with industrial PC computer 6, laser triangulation displacement transducer 3 is connected by Ethernet interface or RS485 bus with industrial PC computer 6, described bottom platform 4 is provided with embedded controller 7, and described embedded controller 7 connects industrial PC computer 6.
In the present embodiment, described bottom platform 4 upper surface is provided with VTOL (vertical take off and landing) moving guide rail 8, described VTOL (vertical take off and landing) moving guide rail 8 is arranged on vertical direction, described VTOL (vertical take off and landing) platform 1 main body is extrusion, its xsect is L shape, the bottom surface of described VTOL (vertical take off and landing) platform 1 is on the upper surface of described bottom platform 4, and described VTOL (vertical take off and landing) platform 1 is arranged on described VTOL (vertical take off and landing) moving guide rail 8 by the lateral surface of its vertical direction; Described bottom platform 4 upper surface is provided with laser displacement sensor and moves horizontally guide rail 9, and described laser triangulation displacement transducer 3 is arranged on described laser displacement sensor and moves horizontally on guide rail 9, and described laser displacement sensor moves horizontally guide rail 9 for line slideway.
In the present embodiment, described precision rotating platform 2 is cylinder table, described cylinder table is provided with the V-shaped groove 10 for placing cylindrical pellet, and described V-shaped groove 10 two ends is communicated with the side of described cylinder table; Described VTOL (vertical take off and landing) moving guide rail 8 quantity is more than or equal to two; Described embedded controller 7 comprises: position switch 11, shaft-position encoder 12, described VTOL (vertical take off and landing) platform 1 is provided with stepper motor 13 with described VTOL (vertical take off and landing) moving guide rail 8 junction, described laser triangulation displacement transducer 3 is provided with stepper motor 13, and described stepper motor 13 is all controlled by embedded controller 7; Described VTOL (vertical take off and landing) moving guide rail 8, laser displacement sensor move horizontally guide rail 9, precision rotating platform 2 is other is all provided with position transducer, described position transducer is all connected with described industrial PC computer 6, described bottom platform 4 is provided with roughness measuring instrument 14, and described roughness measuring instrument 14 is connected with industrial PC computer 6.
The invention also discloses a kind of measuring method of cylindrical pellet density measuring equipment, the steps include:
Step one, cylindrical pellet to be vertically positioned on precision rotating platform 2, to open described laser triangulation displacement transducer 3 and make it maintain static, ensure that laser triangulation displacement transducer 3 can scan cylindrical pellet side;
Step 2, control described embedded controller 7 precision rotating platform 2 is rotated along its central shaft, make described VTOL (vertical take off and landing) platform 1 in the turning axle 15 i.e. axis lifting of described central shaft of precision rotating platform 2 simultaneously, laser triangulation displacement transducer 3 is scanned whole side with helical manner; According to motion principle of relativity, the motion of cylindrical pellet also can be regarded laser triangulation displacement transducer 3 as and rotate around cylindrical pellet, the reading of laser triangulation displacement transducer 3 reacts the distance of different angles cylindrical pellet edge to described turning axle 15, as Fig. 3,4, if sampling angle is spaced apart Δ θ, the edge that jth circle is measured is R to the distance of described turning axle 15
1j, R
2j..., R
nj, then this scanning cross-section area S
jfor:
If scanning helix pitch is Δ h, the scanning number of turns is m, then column part volume V is:
Step 3, the cylindrical pellet of vertically placing to be placed into horizontality on the V-shaped groove 10 of described precision rotating platform 2;
Step 4, control described embedded controller 7 precision rotating platform 2 is rotated, make V-shaped groove 10 length direction vertical with described laser triangulation displacement transducer 3 moving direction;
Step 5, control described embedded controller 7 and independently repeatedly complete these two actions that VTOL (vertical take off and landing) platform 1 moves up and down, laser triangulation displacement transducer 3 moves horizontally, pellet end face is scanned; Because cylindrical pellet end proportion in whole pellet volume is very little, the end error contribution of round platform partial volume measuring error to whole cylindrical pellet cubing is very little, therefore end face scanning can select larger interval, during the scanning of cylindrical pellet end face, first horizontal direction scanning, namely laser triangulation displacement transducer 3 moves horizontally, then vertical scan direction, namely VTOL (vertical take off and landing) platform 1 moves up and down, as Fig. 5, in figure, three lines are respectively scanned in horizontal and vertical direction, the frontier point P of height change gradient extreme point corresponding round platform top circle on sweep trace
1, P
2..P
12, justify matching to frontier point, obtain the radius of circle of top circle, bottom round platform, radius of a circle obtains in the scanning of cylindrical pellet side above, then calculates average frustum cone height by sweep trace, in conjunction with frustum cone height, can calculate the volume of round platform;
Suppose that bottom round platform, radius of circle is R, top fitting circle radius is r, and frustum cone height is h, then end face volume V
1for:
S
1=πR
2
S
2=πr
2
Step 6, scanned one end after, make precision rotating platform 2 rotate 180 °, repeat step 5, surveyed data are processed through described industrial PC computer 6, calculate the volume of cylindrical pellet;
Step 7, cylindrical pellet is moved on described electronic balance 5, measure the quality of cylindrical pellet, as Fig. 8;
Step 8, with the volume of the quality/cylindrical pellet of the cylindrical pellet of gained, obtain the density of cylindrical pellet.
In the present embodiment, also comprise step 9, step 10;
Step 9: use described roughness measuring instrument 14 pairs of cylindrical pellet surfaces to carry out roughness concentration.
Step 10: take off and measure complete cylindrical pellet, moves it to former lay down location, a more mobile unmeasured cylindrical pellet, repeats step one to nine.
Claims (8)
1. a cylindrical pellet density measuring equipment, is characterized in that, comprising: VTOL (vertical take off and landing) platform, precision rotating platform, laser triangulation displacement transducer, bottom platform, electronic balance, industrial PC computer;
Described VTOL (vertical take off and landing) platform is arranged on described bottom platform upper surface and can be elevated at vertical direction, described precision rotating platform is arranged on described VTOL (vertical take off and landing) platform and also can rotates along its central shaft, the described laser triangulation displacement transducer that can move in the horizontal direction to be arranged on the platform of described bottom and to be positioned at by described VTOL (vertical take off and landing) platform, and described electronic balance is arranged on the platform of described bottom;
Described laser triangulation displacement transducer, described electronic balance are connected in industrial PC computer, and described bottom platform is provided with embedded controller, and described embedded controller connects industrial PC computer;
Described bottom platform upper surface is provided with laser displacement sensor and moves horizontally guide rail, and described laser triangulation displacement transducer is arranged on described laser displacement sensor and moves horizontally on guide rail, and it is line slideway that described laser displacement sensor moves horizontally guide rail;
Described precision rotating platform is cylinder table, described cylinder table is provided with the V-shaped groove for placing cylindrical pellet, and described V-shaped groove two ends is communicated with the side of described cylinder table.
2. a kind of cylindrical pellet density measuring equipment according to claim 1, it is characterized in that, described bottom platform upper surface is provided with VTOL (vertical take off and landing) moving guide rail, described VTOL (vertical take off and landing) moving guide rail is arranged on vertical direction, described VTOL (vertical take off and landing) platform main body is extrusion, its xsect is L shape, and the bottom surface of described VTOL (vertical take off and landing) platform is on the upper surface of described bottom platform, and described VTOL (vertical take off and landing) platform is arranged on described VTOL (vertical take off and landing) moving guide rail by the lateral surface of its vertical direction.
3. a kind of cylindrical pellet density measuring equipment according to claim 2, is characterized in that, described VTOL (vertical take off and landing) moving guide rail quantity is more than or equal to two.
4. a kind of cylindrical pellet density measuring equipment according to claim 3, it is characterized in that, described embedded controller comprises: position switch, shaft-position encoder, described VTOL (vertical take off and landing) platform is provided with stepper motor with described VTOL (vertical take off and landing) moving guide rail junction, described laser triangulation displacement transducer is provided with stepper motor.
5. a kind of cylindrical pellet density measuring equipment according to claim 1, is characterized in that, described bottom platform is provided with roughness measuring instrument.
6. the measuring method of a kind of cylindrical pellet density measuring equipment according to claim 1-5 any one, it is characterized in that, step is:
Step one, cylindrical pellet to be vertically positioned on precision rotating platform, to open described laser triangulation displacement transducer and make it maintain static, ensure that laser triangulation displacement transducer can scan cylindrical pellet side;
Step 2, control described embedded controller precision rotating platform is rotated along a vertical direction, make described VTOL (vertical take off and landing) platform be elevated at the axial rotary of precision rotating platform simultaneously, laser triangulation displacement transducer is scanned whole side with helical manner;
Step 3, the cylindrical pellet of vertically placing to be placed into horizontality on the V-shaped groove of described precision rotating platform;
Step 4, control described embedded controller precision rotating platform is rotated, make V-shaped groove length direction vertical with described laser triangulation displacement transducer moving direction;
Step 5, control described embedded controller and independently repeatedly complete these two actions that VTOL (vertical take off and landing) platform moves up and down, laser triangulation displacement transducer moves horizontally, pellet end face is scanned;
Step 6, scanned one end after, make precision rotating platform rotate 180 °, repeat step 5, make surveyed data through described industrial PC computer process, calculate the volume of cylindrical pellet;
Step 7, cylindrical pellet is moved on described electronic balance, measure the quality of cylindrical pellet;
Step 8, with the volume of the quality/cylindrical pellet of the cylindrical pellet of gained, obtain the density of cylindrical pellet.
7. the measuring method of a kind of cylindrical pellet density measuring equipment according to claim 6, is characterized in that, also comprise step 9: use roughness measuring instrument to carry out roughness concentration to cylindrical pellet surface.
8. the measuring method of a kind of cylindrical pellet density measuring equipment according to claim 7, it is characterized in that, also comprise step 10: take off and measure complete cylindrical pellet, move it to former lay down location, a mobile unmeasured cylindrical pellet again, repeats step one to nine.
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Cited By (1)
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CN107462493A (en) * | 2017-08-29 | 2017-12-12 | 北京中建建筑科学研究院有限公司 | Method for measuring apparent density of plastic product |
Families Citing this family (3)
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CN107356496B (en) * | 2017-07-13 | 2018-11-20 | 四川大学 | A kind of water survey pellet density measuring device |
CN107367443A (en) * | 2017-07-13 | 2017-11-21 | 中核建中核燃料元件有限公司 | A kind of water surveys pellet density measuring method |
CN109060596B (en) * | 2018-08-23 | 2021-12-28 | 四川同人精工科技有限公司 | Automatic measuring instrument and method for true density of fuel pellet |
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