CN103645118A - Cylindrical pellet density measurement device and measurement method thereof - Google Patents

Abstract

The invention relates to the fuel pellet measurement field, particularly to a cylindrical pellet density measurement device. The cylindrical pellet density measurement device comprises a vertical lifting table, a precision rotary table, a laser triangulation displacement sensor, a bottom table, an electronic balance and an industrial PC (personal computer), wherein the vertical lifting table is arranged on the upper surface of the bottom table and can lift in a vertical direction, the precision rotary table is arranged on the vertical lifting table and can rotate around a center shaft of the precision rotary table, and the laser triangulation displacement sensor which can move in a horizontal direction is arranged on the bottom table and is arranged near the vertical lifting table, the electronic balance is arranged on the bottom table, and the laser triangulation displacement sensor and the electronic balance are respectively connected to the industrial PC computer. The cylindrical pellet density measurement device is intelligent, the operation is simple and convenient, the data measurement is fast, and the damage to a cylindrical pellet during measurement is very little. The invention also discloses a measurement method of the cylindrical pellet density measurement device.

Description

A kind of cylinder pellet density measuring equipment and measuring method thereof

Technical field

The present invention relates to fuel pellet fields of measurement, particularly a kind of cylinder pellet density measuring equipment and measuring method thereof.

Background technology

The pellet major part relating in prior art is fuel ball, be processed to cylindrical, need to measure its density, be generally measurement volumes, quality now, finally calculates density, in cubing, be that pellet is put into liquid, utilize the difference in height of liquid to calculate volume, but this situation will damage and measure the pellet surface that liquid contacting part divides, affect the use of measured pellet, 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 existing above-mentioned deficiency in prior art, a kind of more intelligent, operation is easier, measurement data is faster, the damage to cylinder pellet in measurement is extremely low cylinder pellet density measuring equipment is provided, also provide and made DATA REASONING more scientific, the measuring method of this device that the damage to cylinder pellet in measurement is extremely low simultaneously.

In order to realize foregoing invention object, the invention provides following technical scheme:

A cylinder 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 also can be in vertical direction lifting, described precision rotating platform is arranged on described VTOL (vertical take off and landing) platform and can rotates along its central shaft, the described laser triangulation displacement transducer that can move in the horizontal direction is arranged on the platform of described bottom and is 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, on the platform of described bottom, embedded controller are installed, and described embedded controller connects industrial PC computer.

The principle of the density measurement of apparatus of the present invention is for first scanning profile, by industrial PC computer, calculate volume, by described electronic balance, measure quality again, draw density data, important is scanning profile part, need to scan complete side, because the two ends of cylinder pellet are round platform, so need scanning two ends separately, the VTOL (vertical take off and landing) platform of energy vertical direction lifting, can be along the precision rotating platform of a vertical direction rotation, the laser triangulation displacement transducer that can move in the horizontal direction, three coordinates together, can complete above-mentioned scanning profile part, described electronic balance can be measured the quality of cylinder pellet, the described embedded controller of installing 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 shaped, the bottom surface of described VTOL (vertical take off and landing) platform is engaged 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 is also convenient, 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, it is also convenient that laser displacement sensor moves horizontally the installation of guide rail, one-piece construction convenient for maintaining or removable parts equipment, also more easily guarantee that laser triangulation displacement transducer is in the traveling priority coincidence measurement precision of surface level.

Preferably, described precision rotating platform is cylinder table, on described cylinder table, be provided with for placing the V-shaped groove of cylinder pellet, described V-shaped groove two ends is communicated with the side of described cylinder table, when this structure makes cylinder pellet horizontal positioned, can stable place, and while having guaranteed cylinder pellet two ends scan, do not have any factor existence stopping.

Preferably, described VTOL (vertical take off and landing) moving guide rail quantity is more than or equal to two, and structure is more stable, has guaranteed the precision of described VTOL (vertical take off and landing) platform when vertical direction lifting.

Preferably, described embedded controller comprises: position switch, shaft-position encoder, on described VTOL (vertical take off and landing) platform, with described VTOL (vertical take off and landing) moving guide rail junction, stepper motor is installed, on described laser triangulation displacement transducer, stepper motor is installed, position switch is controlled 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 is controlled the anglec of rotation of described precision rotating platform.

Preferably, on the platform of described bottom, roughness measuring instrument is installed, for measuring cylinder pellet surfaceness.

Compared with prior art, the beneficial effect installing in the present invention:

More intelligent, operation is easier, measurement data is faster, the damage of cylinder pellet in measurement is extremely low.

The measuring method that the invention also discloses a kind of cylinder pellet density measuring equipment, the steps include:

Step 1, cylinder pellet is vertically positioned on precision rotating platform, opens described laser triangulation displacement transducer it is maintained static, guarantee that laser triangulation displacement transducer can scan cylinder 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 in the axial rotary lifting of precision rotating platform simultaneously, laser triangulation displacement transducer is scanned whole side in helix mode;

Step 3, the cylinder pellet of vertically placing is placed on the V-shaped groove of described precision rotating platform with horizontality;

Step 4, control described embedded controller and make precision rotating platform rotation, make V-shaped groove length direction vertical with described laser triangulation displacement transducer moving direction;

Step 5, control that described embedded controller is independent respectively repeatedly completes 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 behind one end, made precision rotating platform Rotate 180 °, repeating step five, makes surveyed data process through described industrial PC computer, calculates the volume of cylinder pellet;

Step 7, cylinder pellet is moved on described electronic balance, measure the quality of cylinder pellet;

Step 8, with the volume of quality/cylinder pellet of the cylinder pellet of gained, obtain the density of cylinder pellet.

Preferably, also comprise step 9: use described roughness measuring instrument to carry out roughness concentration to cylinder pellet surface.

Preferably, also comprise step 10: take off and measure complete cylinder pellet, move it to former lay down location, a more mobile unmeasured cylinder pellet, repeating step one to nine.

Compared with prior art, the beneficial effect of method in the present invention:

DATA REASONING is more scientific, and the damage to cylinder pellet in measurement is extremely low.

Accompanying drawing explanation:

Fig. 1 is the schematic diagram to the scanning of cylinder pellet side in the present invention.

Fig. 2 is the schematic diagram to the scanning of cylinder pellet end face in the present invention.

Fig. 3 is the schematic diagram to the scanning of cylinder pellet side in the present invention.

Fig. 4 is the sweep trace to the scanning of cylinder pellet side in the present invention.

Fig. 5 is the schematic diagram to the scanning of cylinder pellet end face in the present invention.

Fig. 6 is the structural representation of cylinder pellet density measuring equipment in the present invention.

Fig. 7 is the structural representation of another duty of cylinder pellet density measuring equipment in the present invention.

Fig. 8 is the schematic diagram of using electronics balance measurement pellet quality in the present invention.

Fig. 9 is the schematic diagram of cylinder 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, 4-bottom platform, 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 to the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology realizing based on content of the present invention all belong to scope of the present invention.

Embodiment 1

A cylinder 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 surfaces also can be in vertical direction lifting, described precision rotating platform 2 is arranged on described VTOL (vertical take off and landing) platform 1 and 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 is positioned at described VTOL (vertical take off and landing) platform 1 side, 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, on described bottom platform 4, embedded controller 7 is installed, described embedded controller 7 connects industrial PC computer 6.

In the present embodiment, described bottom platform 4 upper surfaces are 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 shaped, the bottom surface of described VTOL (vertical take off and landing) platform 1 is engaged 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 surfaces are provided with laser displacement sensor and move 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, is provided with for placing the V-shaped groove 10 of cylinder pellet on described cylinder table, and described V-shaped groove 10 two ends are communicated with the side of described cylinder table; Described VTOL (vertical take off and landing) moving guide rail 8 quantity are more than or equal to two; Described embedded controller 7 comprises: position switch 11, shaft-position encoder 12, on described VTOL (vertical take off and landing) platform 1, with described VTOL (vertical take off and landing) moving guide rail 8 junctions, stepper motor 13 is installed, on described laser triangulation displacement transducer 3, stepper motor 13 is installed, 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, the other position transducer that is all provided with of precision rotating platform 2, described position transducer is all connected with described industrial PC computer 6, on described bottom platform 4, roughness measuring instrument 14 is installed, described roughness measuring instrument 14 is connected with industrial PC computer 6.

The measuring method that the invention also discloses a kind of cylinder pellet density measuring equipment, the steps include:

Step 1, cylinder pellet is vertically positioned on precision rotating platform 2, opens described laser triangulation displacement transducer 3 it is maintained static, guarantee that laser triangulation displacement transducer 3 can scan cylinder pellet side;

Step 2, control described embedded controller 7 and make precision rotating platform 2 along the rotation of its central shaft, make described VTOL (vertical take off and landing) platform 1 is the axial lifting of described central shaft at the turning axle 15 of precision rotating platform 2 simultaneously, and laser triangulation displacement transducer 3 is scanned whole side in helix mode; According to motion principle of relativity, the motion of cylinder pellet also can be regarded laser triangulation displacement transducer 3 as and rotate around cylinder pellet, the reading reaction different angles cylindrical core block edge of laser triangulation displacement transducer 3 is to the distance of described turning axle 15, as Fig. 3,4, if sampling angle is spaced apart Δ θ, the edge that j circle is measured is R to the distance of described turning axle 15 _1j, R _2j..., R _nj, this scanning cross-section area S _jfor:

$S_j=\mathrm{\&Delta;\&theta;}\underset{i=1}{\overset{\mathrm{<figure-callout\; id="2"\; label="n\; R\; ij"\; filenames="HDA0000449793300000011.png,HDA0000449793300000032.png"\; state="\{\{state\}\}">n</figure-callout>}}{\mathrm{\&Sigma;}}}\frac{R_{\mathrm{ij}}^{}}{}\frac{{}_2^{}}{2}$

If scanning helix pitch is Δ h, the scanning number of turns is m, and column part volume V is:

$V=\mathrm{\&Delta;h}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}{S}_j=\mathrm{\&Delta;h\&Delta;\&theta;}\underset{j=1}{\overset{m}{\mathrm{\&Sigma;}}}\underset{i=1}{\overset{\mathrm{<figure-callout\; id="2"\; label="n\; R\; ij"\; filenames="HDA0000449793300000011.png,HDA0000449793300000032.png"\; state="\{\{state\}\}">n</figure-callout>}}{\mathrm{\&Sigma;}}}\frac{R_{\mathrm{ij}}^{}}{}\frac{{}_2^{}}{2}$

Step 3, the cylinder pellet of vertically placing is placed on the V-shaped groove 10 of described precision rotating platform 2 with horizontality;

Step 4, control described embedded controller 7 and make precision rotating platform 2 rotation, make V-shaped groove 10 length directions vertical with described laser triangulation displacement transducer 3 moving directions;

Step 5, control that described embedded controller 7 is independent respectively repeatedly completes 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 cylinder pellet end proportion in whole pellet volume is very little, end round platform partial volume measuring error is very little to the error contribution of whole cylindrical core piece cubing, therefore end face scanning can be selected larger interval, during the scanning of cylinder pellet end face, first horizontal direction scanning, be that laser triangulation displacement transducer 3 moves horizontally, then vertical scan direction, be that VTOL (vertical take off and landing) platform 1 moves up and down, as Fig. 5, in figure, horizontal and vertical direction respectively scans three lines, the frontier point P of the corresponding round platform of height change gradient extreme point top circle on sweep trace ₁, P ₂..P ₁₂, frontier point is justified to matching, obtain the radius of circle of top circle, round platform bottom radius of a circle obtains in the scanning of cylinder 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 round platform bottom radius of circle is R, top fitting circle radius is r, and frustum cone height is h, end face volume V ₁for:

$V_1=\frac{1}{3}h({\mathrm{<figure-callout\; id="1"\; label="S"\; filenames="HDA0000449793300000041.png"\; state="\{\{state\}\}">S</figure-callout>}}_1+{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000449793300000011.png,HDA0000449793300000032.png"\; state="\{\{state\}\}">S</figure-callout>}}_2+\sqrt[2]{S_1{\mathrm{<figure-callout\; id="2"\; label="S"\; filenames="HDA0000449793300000011.png,HDA0000449793300000032.png"\; state="\{\{state\}\}">S</figure-callout>}}_2})$

S ₁=πR ²

S ₂=πr ²

Step 6, scanned behind one end, made precision rotating platform 2 Rotate 180s °, repeating step five, makes surveyed data process through described industrial PC computer 6, calculates the volume of cylinder pellet;

Step 7, cylinder pellet is moved on described electronic balance 5, measure the quality of cylinder pellet, as Fig. 8;

Step 8, with the volume of quality/cylinder pellet of the cylinder pellet of gained, obtain the density of cylinder pellet.

In the present embodiment, also comprise step 9, step 10;

Step 9: use 14 pairs of cylinder pellet surfaces of described roughness measuring instrument to carry out roughness concentration.

Step 10: take off and measure complete cylinder pellet, move it to former lay down location, a more mobile unmeasured cylinder pellet, repeating step one to nine.

Claims (10)

1. a cylinder 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 also can be in vertical direction lifting, described precision rotating platform is arranged on described VTOL (vertical take off and landing) platform and can rotates along its central shaft, the described laser triangulation displacement transducer that can move in the horizontal direction is arranged on the platform of described bottom and is 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, on the platform of described bottom, embedded controller are installed, and described embedded controller connects industrial PC computer.

2. a kind of cylinder 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 shaped, and the bottom surface of described VTOL (vertical take off and landing) platform is engaged 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 cylinder pellet density measuring equipment according to claim 1, it is characterized in that, 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, and it is line slideway that described laser displacement sensor moves horizontally guide rail.

4. according to a kind of cylinder pellet density measuring equipment described in claim 1 or 2 or 3, it is characterized in that, described precision rotating platform is cylinder table, is provided with for placing the V-shaped groove of cylinder pellet on described cylinder table, and described V-shaped groove two ends is communicated with the side of described cylinder table.

5. a kind of cylinder 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.

6. a kind of cylinder pellet density measuring equipment according to claim 5, it is characterized in that, described embedded controller comprises: position switch, shaft-position encoder, on described VTOL (vertical take off and landing) platform, with described VTOL (vertical take off and landing) moving guide rail junction, stepper motor is installed, on described laser triangulation displacement transducer, stepper motor is installed.

7. a kind of cylinder pellet density measuring equipment according to claim 1, is characterized in that, on the platform of described bottom, roughness measuring instrument is installed.

8. a measuring method for cylinder pellet density measuring equipment, is characterized in that, step is:

Step 1, cylinder pellet is vertically positioned on precision rotating platform, opens described laser triangulation displacement transducer it is maintained static, guarantee that laser triangulation displacement transducer can scan cylinder 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 in the axial rotary lifting of precision rotating platform simultaneously, laser triangulation displacement transducer is scanned whole side in helix mode;

Step 3, the cylinder pellet of vertically placing is placed on the V-shaped groove of described precision rotating platform with horizontality;

Step 4, control described embedded controller and make precision rotating platform rotation, make V-shaped groove length direction vertical with described laser triangulation displacement transducer moving direction;

Step 5, control that described embedded controller is independent respectively repeatedly completes 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 behind one end, made precision rotating platform Rotate 180 °, repeating step five, makes surveyed data process through described industrial PC computer, calculates the volume of cylinder pellet;

Step 7, cylinder pellet is moved on described electronic balance, measure the quality of cylinder pellet;

Step 8, with the volume of quality/cylinder pellet of the cylinder pellet of gained, obtain the density of cylinder pellet.

9. the measuring method of a kind of cylinder pellet density measuring equipment according to claim 8, is characterized in that, also comprises step 9: use described roughness measuring instrument to carry out roughness concentration to cylinder pellet surface.

10. the measuring method of a kind of cylinder pellet density measuring equipment according to claim 9, it is characterized in that, also comprise step 10: take off and measure complete cylinder pellet, move it to former lay down location, move again a unmeasured cylinder pellet, repeating step one to nine.

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