CN1963387A - Full automatic intelligent measuring apparatus for gelatineous layer of mixed coal and measuring method thereof - Google Patents
Full automatic intelligent measuring apparatus for gelatineous layer of mixed coal and measuring method thereof Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 14
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- 238000005259 measurement Methods 0.000 claims abstract description 19
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- 239000000084 colloidal system Substances 0.000 claims description 11
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- 238000005096 rolling process Methods 0.000 claims description 9
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- 229910052710 silicon Inorganic materials 0.000 claims description 5
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- 238000004364 calculation method Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract 1
- 239000002802 bituminous coal Substances 0.000 description 12
- 238000003556 assay Methods 0.000 description 5
- 239000000571 coke Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004939 coking Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
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Abstract
This invention relates to coal glue layer total automatic measurement device, which comprises computer, input and output data card, automatic heating temperature control part, smoke volume measurement, probe upper and down drive structures, probe rotation part and pressure automatic measurement, wherein, its uses volume measurement part to judge coal sample volume at peak or trough and to start probe drive structure for coal layer measurement through line step motor impulse sequence to determine coal layer upper and down layer position then uses OLS to match upper and down list layer change curve to get maximum thickness values.
Description
Technical field
The present invention relates to the coal colloidal layer all automatic measurement, the present invention relates to instrument and measuring method thereof that a kind of fully-automatic intelligent is realized the coal colloidal layer high-acruracy survey more precisely.
Background technology
Plastometer indices is an important indicator of ature of coal.It has reflected that coal generates the quantity of plastic mass in being subjected to thermal process, characterized the process of industrial coking approx.The gelatinous layer assay method is the industrial coke oven condition of simulation, under constant voltage (top adds press fit) coal sample is carried out one-sided heating, makes coal sample form a series of isothermal surfaces of successively decreasing from bottom to top, distributes successively by semicoke, plastic mass, coal sample.Mensuration by plastic mass can the coking situation of tentative prediction coal in coke oven and the quality condition of generation coke.
Estimating Sa Baoshinikefu and the Wa Xilieweiqi that ature of coal is a USSR (Union of Soviet Socialist Republics) with plastometer indices proposed in 1932.By at experimental determination coal colloidal layer maximum ga(u)ge (Y value), final contraction value (X value), indexs such as assay determination process metabituminous coal volume curve shape, characteristic of coke and the anti-crushing ability of coke button are judged the coking property of bituminous coal.In existing GB5751-86 " Chinese Coal Classification ", maximum thickness of plastic layer (Y value) is an important indicator as evaluation bituminous coal coking property.
At present, the mensuration of maximum thickness of plastic layer (Y) value mainly judges to have subjectivity by people's experience (or sensation).In addition, obtained china national practical new-type patent: the bituminous coal gelatinous layer automatic detection device of bituminous coal gelatinous layer automatic detection device (92230782.2) does not have practical application, reason is that this patent does not have to measure automatically according to the requirement of standard GB 479-87 bituminous coal plastometer indices assay method fully, and the drive motor of this utility model patent is a direct current generator, this kind motor also needs to mix corresponding displacement measurement sensor, such as pot etc., the displacement measurement precision is far below the precision of stepper motor, also have pressure transducer to be mounted on the outer ring of the miniature bearing that links together with leading screw, like this, when leading screw rotates, in order to guarantee that pressure transducer does not rotate, then pressure transducer is bound to be subjected to torsional interaction, can influence pressure measurement accuracy like this, also have because not rotation and vibrations of probe when withdrawing from, probe will be taken plastic mass out of, and this thickness of colloidal matter layer that can have a strong impact on the sticking coal sample of some colloidal substances body is measured.Also have, the patent of invention of having announced: bituminous coal gelatinous layer self-operated measuring unit and measuring method thereof (200610038384.1), owing to need insert conduit in the platen and need the installation of conduit geometrical clamp, this operation is very inconvenient, the fitting operation that has needs nearly one hour, and this has a strong impact on the measurement progress.
Summary of the invention
For addressing the above problem, the objective of the invention is provides a kind of installation and easy to operate according to standard GB 479-87 coal colloidal layer index assay method, can fully-automatic intelligent realizes the instrument and the measuring method thereof of coal colloidal layer high-acruracy survey.
For addressing the above problem, the present invention takes following technical scheme to realize:
The coal colloidal layer full automatic intelligent measuring apparatus; comprise heating furnace; depression bar; counterweight; the coal sample cup; coal sample is pressed valve; probe; the measurement mechanism base; computing machine; thermopair; Elema; bidirectional triode thyristor; it is characterized in that computing machine links the then displacement transducer of measurement volumes by inputoutput data; the LOAD CELLS of gaging pressure; the limit switch of restriction and definite probe location; measure the thermopair of coal sample temperature; the silicon-controlled voltage regulation module; make probe up and down and produce the linear stepping motor of vibrations and make the probe motor rotating; adopt bolt between probe driving mechanism extension board and the probe driving mechanism mounting seat and have the oblong aperture of certain angle to fix; the probe driving mechanism base is fixed on the measuring instrument base by a thicker fixedly vertical rod; the probe driving mechanism base can fixedly move and rotation in the vertical rod; by holding screw it is maintained static; two pairs of limit switches have been installed in probe driving mechanism; restriction and definite probe location; linear stepping motor is installed on the flute profile driving arm; the push-pull effort of linear stepping motor passes to the slide block of rolling guide-rail pairs by leading screw and screw mandrel fixed mount; probe is fixed on the slide block by the LOAD CELLS on the pressure transducer fixed mount; be clearance fit between probe and the LOAD CELLS; probe can rotate in LOAD CELLS; also has a spring between probe and the sensor; this spring rotates from coal sample at probe and plays the effect that flexibility is drawn when withdrawing from; and stepper motor can also move up and down and drives the probe vibrations; this can reduce the possibility that probe is taken plastic mass out of; taking sticking plastic mass when avoiding probe to withdraw from better out of comes out; the present invention has increased again makes the probe motor rotating; and also be fixed on the slide block it; be linked together by chute and probe stationary cap with probe; leave certain interval between chute bottom and the motor shaft top; the space of having reserved for the LOAD CELLS distortion; probe accurately inserts in the coal sample by the conduit that is installed on the conduit geometrical clamp; conduit plays the effect of reinforcing probe and guiding; wherein the conduit geometrical clamp both can be installed on the slide block and move up and down with slide block and probe; also can be installed in the conduit geometrical clamp on the shell bottom plate of driving mechanism bottom, can protect probe not to be operated personnel like this and scrape curved because of carelessness.
Aforesaid coal colloidal layer full automatic intelligent measuring apparatus is characterized in that above-mentioned pressure transducer adopts the beam type LOAD CELLS of 0～3kg.
Utilize aforesaid coal colloidal layer full automatic intelligent measuring apparatus to carry out the method that automated intelligent is measured, it is characterized in that having following steps:
(1) computing machine detects heated coal sample temperature by thermopair, control the coal sample temperature by the break-make of silicon-controlled voltage regulation module controls bidirectional triode thyristor again, after temperature reaches 250 degree, utilize to be installed in the variation that the displacement sensor on the depression bar goes out the coal sample volume;
(2) utilize difference algorithm to judge the coal sample volume change, simultaneously in conjunction with last time Measuring Time and coal sample present situation, open linear stepping motor push-and-pull slide block, make its at the uniform velocity (150～260mm/ minute) rectilinear motion, probe will insert and transfer to coal sample like this, carry out the measurement of gelatinous layer, in addition also can be manually click about the computer mouse control step motor, carry out the coal sample colloid and measure according to the situation of change of coal sample volume;
(3) before from coal sample, extracting probe, by measuring probe electric rotating machine power (perhaps electric current or voltage) size, obtain the rotary torque that probe is subjected to, so just can obtain coal sample colloid viscous force, when the colloid viscous force greater than certain threshold value, computing machine just instructs electric rotating machine rotation drive probe to rotate in coal sample, when detected viscous force during less than threshold value, the motor that just can stop the rotation rotates, extract probe, perhaps by drawing probe on the stepper motor, detect the size that LOAD CELLS is subjected to pulling force, just detect the size of the plastic mass viscous force that produces coal, when the colloid viscous force greater than certain threshold value, instruction makes the stepper motor vertical tremor, when detected viscous force during less than threshold value, just can stop the stepper motor vibrations, extract probe, perhaps two kinds of methods (probe rotation and vibrations) combine, and can greatly reduce the possibility of taking and destroy plastic mass when probe withdraws from out of like this.
(4) computing machine is gathered the pressure of LOAD CELLS in real time by the I/O data card, when probe is measured downwards, determine the pulse sequence number that is used to drive linear stepping motor of the levels position correspondence of coal colloidal layer according to the variation of pressure, determine the levels position of coal colloidal layer by calculating;
(5) utilize least square fitting to go out the coal colloidal layer change curve on top layer up and down again, utilize comparison algorithm to draw the ultimate range on top layer up and down at last, obtain the maximum ga(u)ge value of coal colloidal layer.
Principle of work of the present invention is: the LOAD CELLS that probe is installed is fixed on the slide block of high-accuracy rolling guideway, like this, probe is not subjected to any torsional interaction, has improved measuring accuracy; In addition, linear stepping motor can be realized the high-acruracy survey of probe location, and measuring accuracy reaches 0.0079mm; Patent (92230782.2) is the position measurement circuit measuring probe position of being furnished with by direct current generator, and the former will be higher than the latter far away at measuring accuracy.Also have; adopt bolt between probe driving mechanism extension board and the probe driving mechanism mounting seat and have the oblong aperture of certain angle to fix; the probe driving mechanism base can fixedly move and rotate in the vertical rod in addition; these have guaranteed flexible adjustment probe driving mechanism position; just make probe catheter aim at the coal sample measured hole; make probe in smooth insertion of conduit and dial-out coal sample; also have; two pairs of limit switches have been installed in the probe driving mechanism both can have been protected linear stepping motor; also can play positioning action; also have; before from coal sample, extracting probe; by measuring probe electric rotating machine power (perhaps electric current or voltage) size; obtain the rotary torque that probe is subjected to; so just can obtain coal sample plastic mass viscous force; when the colloid viscous force greater than certain threshold value; computing machine just instructs electric rotating machine to rotate; driving probe rotates in coal sample; perhaps by drawing probe on the stepper motor; detect the size that LOAD CELLS is subjected to pulling force; the produce coal size of plastic mass viscous force of detection; instruction makes the stepper motor vertical tremor; reduce probe and take the possibility of plastic mass out of; when detected viscous force during less than threshold value; just can stop the rotation motor or stepper motor vibrations; extract probe; perhaps probe rotation and vibrations are combined; so just greatly reduce the possibility of taking plastic mass when probe withdraws from out of; also have; also has a spring between probe and the sensor; this spring plays the effect that flexibility is drawn when probe withdraws from from coal sample; have and reduce gas leakage and take the plastic mass effect out of; have again; detect heated bituminous coal temperature by thermopair; after temperature reaches 250 degree; utilization is installed in the long-pending variation of displacement sensor smoke coal body on the depression bar; utilize the curve shape evaluation algorithm to draw coal sample volume change situation then; simultaneously in conjunction with last time Measuring Time and coal sample present situation; unlatching is installed in the linear stepping motor on the flute profile driving arm; the expulsive force of linear stepping motor passes to the slide block of rolling guide-rail pairs by leading screw and screw mandrel fixed mount; the high rolling guide-rail pairs slide block of the little precision of resistance is (150～260mm/ minute) rectilinear motion downwards at the uniform velocity; be installed in probe on the pressure transducer fixed mount also in company with slide block rectilinear motion together by LOAD CELLS; probe just at the uniform velocity penetrates in the bituminous coal along conduit; simultaneous computer is gathered the pressure of LOAD CELLS in real time by the I/O data card; because different coal samples; plastic mass has different surface naturies with semicolloid; pressure difference when then probe touches each surface; like this; determine the pulse sequence number that is used to drive linear stepping motor of position, the top layer up and down correspondence of bituminous coal gelatinous layer according to the variation of pressure; determine the position, top layer up and down of bituminous coal gelatinous layer by calculating; utilize least square fitting to go out the change curve of position, top layer up and down again; utilize comparison algorithm to draw the ultimate range on top layer up and down at last, just can obtain the maximum ga(u)ge value of bituminous coal gelatinous layer.
The beneficial effect of patent of the present invention is to have improved the Displacement Measurement precision, reduced pressure measurement errors, flexible for installation, easy to operate, reduced and taken and reached the possibility of destroying colloid when probe withdraws from out of, realize all automatic measurement in strict accordance with coal colloidal layer index assay method among the standard GB 479-87 simultaneously, test through nearly hundred kinds of coal samples, this automatic measuring instrument is applicable to the various bituminous coal in the national standard, and measuring error is lower than 0.5mm, is lower than the error that allows in the national measurement standard.
Description of drawings
Below in conjunction with drawings and Examples patent of the present invention is further specified:
The front view of Fig. 1 coal colloidal layer full automatic intelligent measuring apparatus structural drawing;
The vertical view of Fig. 2 coal colloidal layer full automatic intelligent measuring apparatus structural drawing;
Fig. 3 probe driving mechanism figure;
Fig. 4 probe driving mechanism extension board;
Fig. 5 probe driving mechanism mounting seat.
Embodiment
Coal colloidal layer full automatic intelligent measuring apparatus of the present invention shown in Fig. 1-5, wherein: 1. measuring instrument base, 2. displacement transducer, 3. depression bar, 4. counterweight, 5. probe driving mechanism, 6. LOAD CELLS, 7. pressure disc strut, 8. probe, 9. the mounting seat of probe driving mechanism, 10. fixedly vertical rod, 11. conduit fixed heads, 12 conduits, 13. coal cups, 14. heating furnaces, 15. the coal sample pressure disc, 16. depression bar columns, 17. coal samples, 18. thermopair, 19. Elemas, 20. leading screws, 21. linear stepping motor, 22. limit switches, 23. flute profile driving arms, 24. rolling guide, 25. leading screw fixed mounts, 26. slide blocks, 27. the pressure transducer fixed mount, 28. probe driving mechanism extension boards, 29. probe stationary caps, 30. spring, 31. chutes, 32. spin motor shafts, 33. electric rotating machine, 34. probe driving mechanism encapsulating shells.
Detect heated coal sample (17) temperature by thermopair (18); computing machine utilizes the break-make of silicon-controlled voltage regulation module controls bidirectional triode thyristor to realize temperature control; after temperature reaches 250 degree; utilization is installed in the variation that the displacement transducer (2) on the depression bar (3) is measured the coal sample volume; the difference algorithm that utilizes curve shape to judge then draws coal sample volume change situation; simultaneously in conjunction with last time Measuring Time and coal sample present situation; unlatching is installed in the linear stepping motor (21) on the flute profile driving arm (23); the push-pull effort of linear stepping motor (21) passes to the slide block (26) of rolling guide-rail pairs by leading screw (20) and screw mandrel fixed mount (25); the high rolling guide-rail pairs slide block (26) of the little precision of resistance is (150～260mm/ minute) rectilinear motion downwards at the uniform velocity; the probe (8) that is installed in the LOAD CELLS (6) on the pressure transducer fixed mount (27) also in company with slide block (26) together along rolling guide (24) rectilinear motion; probe (8) just at the uniform velocity the conduit (12) on being installed on conduit fixed head (11) penetrate the coal sample (17); wherein conduit both can be fixed on the shell bottom plate of driving mechanism bottom; can protect probe not to be operated personnel like this scrapes curved because of carelessness; also can be connected on the LOAD CELLS fixed head; move up and down with probe; when preparing to withdraw from bottom probe is pricked coal sample; detected coal sample plastic mass viscous force is during greater than certain threshold value; computing machine will instruct electric rotating machine (33) to rotate; the torsion of electric rotating machine (33) just can be delivered to chute (31) by motor shaft (32); be connected one by probe stationary cap (29) between chute (31) and the probe (8); Xuan Zhuan torsion just makes probe (8) rotation like this; because when probe (8) is prepared to withdraw from; lifted earlier; spring (30) just is compressed like this; make probe (8) have the effect that flexibility is extracted while rotating; this can reduce the destruction of colloid and take out of; simultaneous computer is gathered the pressure of LOAD CELLS (6) in real time by the I/O data card; because coal sample; plastic mass has different surface naturies with semicolloid; difference is stressed when then probe (8) touches each surface; like this; determine the coal sample gelatinous layer pulse sequence number that is used to drive linear stepping motor (21) of position, top layer correspondence up and down according to the variation of pressure; determine the position, top layer up and down of coal sample gelatinous layer by calculating pulse number; utilize least square fitting to go out the change curve of position, top layer up and down again; at last; utilize comparison algorithm to draw the ultimate range on top layer up and down, just obtained the maximum ga(u)ge value of coal sample gelatinous layer.By nearly hundred kinds of coal check experiments in the national standard, the measuring error of this coal colloidal layer all automatic measurement instrument is less than 0.5mm, measuring accuracy is far above the measuring accuracy of patent (92230782.2 and 200610038384.1), less than the error (1～2mm) that allows in the national standard.
In addition to the implementation, all employings are equal to the technical scheme that form obtained of replacement or equivalent transformation, all drop within protection scope of the present invention.
Claims (3)
1. coal colloidal layer full automatic intelligent measuring apparatus, comprise heating furnace, depression bar, counterweight, the coal sample cup, coal sample is pressed valve, probe, the measurement mechanism base, computing machine, thermopair, Elema, bidirectional triode thyristor, it is characterized in that described computing machine is connecting displacement transducer by the I/O data card, LOAD CELLS, limit switch, thermopair, the silicon-controlled voltage regulation module, linear stepping motor and probe electric rotating machine, adopt bolt between probe driving mechanism extension board and the probe driving mechanism mounting seat and have the oblong aperture of certain angle to fix, the probe driving mechanism mounting seat is fixed on the measuring instrument base by a thicker fixedly vertical rod, the probe driving mechanism mounting seat can fixedly move and rotation in the vertical rod, by holding screw it is maintained static, two pairs of limit switches have been installed in the probe driving mechanism, linear stepping motor is installed on the flute profile driving arm, the push-pull effort of linear stepping motor passes to the slide block of rolling guide-rail pairs by leading screw and screw mandrel fixed mount, probe is fixed on the slide block by the LOAD CELLS on the pressure transducer fixed mount, be clearance fit between probe and the LOAD CELLS, also has a spring between probe and the sensor, the probe electric rotating machine also is fixed on the slide block, and be linked together by chute and probe stationary cap with probe, leave certain interval between chute bottom and the motor shaft top, probe inserts coal sample by the conduit that is installed on the conduit geometrical clamp.
2. coal colloidal layer automatic measuring instrument according to claim 1 is characterized in that above-mentioned pressure transducer adopts the beam type LOAD CELLS of 0-3kg.
3. method of utilizing the described coal colloidal layer automatic measuring instrument of claim 1 to measure automatically is characterized in that having following steps:
(1) heating steps: computing machine detects heated coal sample temperature by thermopair, control the coal sample temperature by the break-make of silicon-controlled voltage regulation module controls bidirectional triode thyristor again, after temperature reaches 250 degree, utilize to be installed in the variation that the displacement sensor on the depression bar goes out the coal sample volume;
(2) comparison step: utilize difference algorithm to judge the coal sample volume change, simultaneously in conjunction with last time Measuring Time and coal sample present situation, open linear stepping motor push-and-pull slide block, make its at the uniform velocity (150～260mm/ minute) rectilinear motion, probe will insert and transfer to coal sample like this, carry out the measurement of gelatinous layer, in addition also can be manually click about the computer mouse control step motor, carry out the coal sample colloid and measure according to the situation of change of coal sample volume;
(3) measuring process: before from coal sample, extracting probe, by measuring probe electric rotating machine power (perhaps electric current or voltage) size, obtain the rotary torque that probe is subjected to, so just can obtain coal sample colloid viscous force, when the colloid viscous force greater than certain threshold value, computing machine just instructs electric rotating machine rotation drive probe to rotate in coal sample, when detected viscous force during less than threshold value, the motor that just can stop the rotation rotates, extract probe, perhaps by drawing probe on the stepper motor, detect the size that LOAD CELLS is subjected to pulling force, just detect the size of the plastic mass viscous force that produces coal, when the colloid viscous force greater than certain threshold value, instruction makes the stepper motor vertical tremor, when detected viscous force during less than threshold value, just can stop the stepper motor vibrations, extract probe, plastic mass is taken and is destroyed as far as possible in perhaps rotation and vibrating method combination less out of when probe is withdrawed from;
(4) determining step: computing machine is gathered the pressure of LOAD CELLS in real time by the I/O data card, determine the pulse sequence number that is used to drive linear stepping motor of the levels position correspondence of coal colloidal layer according to the variation of pressure, determine the levels position of coal colloidal layer by calculating;
(5) calculation procedure: utilize least square fitting to go out the coal colloidal layer change curve on top layer up and down again, utilize comparison algorithm to draw the ultimate range on top layer up and down at last, obtain the maximum ga(u)ge value of coal colloidal layer.
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| CN101334396B (en) * | 2007-06-25 | 2012-10-03 | 中冶京诚工程技术有限公司 | Full-automatic coal colloidal layer index measuring instrument |
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