CN105374253A - Multifunctional instrument calibrator for teaching and transmitter calibration method - Google Patents

Multifunctional instrument calibrator for teaching and transmitter calibration method Download PDF

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Publication number
CN105374253A
CN105374253A CN201510902356.9A CN201510902356A CN105374253A CN 105374253 A CN105374253 A CN 105374253A CN 201510902356 A CN201510902356 A CN 201510902356A CN 105374253 A CN105374253 A CN 105374253A
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CN
China
Prior art keywords
transmitter
school
level meter
float level
calibration equipment
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Granted
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CN201510902356.9A
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Chinese (zh)
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CN105374253B (en
Inventor
冯晓玲
马菲
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Liaoning Petrochemical Vocational and Technical College
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Liaoning Petrochemical Vocational and Technical College
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Priority to CN201510902356.9A priority Critical patent/CN105374253B/en
Publication of CN105374253A publication Critical patent/CN105374253A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
    • G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery

Abstract

The invention discloses a multifunctional instrument calibrator for teaching, comprising a base; a support rod, vertically mounted on the base; a dry calibration float mechanism, disposed at the top of the support rod and used for horizontally mounting a dry calibration float level; a water calibration float mechanism, disposed on one side of the support rod and used for vertically mounting a water calibration float level; a transmitter mounting rod, disposed on the other side of the support rod and used for mounting a transmitter. The calibrator has a function of mounting and calibrating various instruments and is mainly used for dry calibration and water calibration of float levels and mounting and calibration of intelligent transmitters. In addition, the calibrator is easy and convenient to move, can be moved to any open field for teaching according to teaching progress of a course, and is satisfactory to students of different majors, teachers, and enterprise employees taking skill training. The invention also provides a multifunctional instrument calibrator.

Description

A kind of multifunction instrument calibration equipment for imparting knowledge to students and transmitter method of calibration
Technical field
The present invention relates to instrument check technical field, particularly a kind of multifunction instrument calibration equipment for imparting knowledge to students and transmitter method of calibration.
Background technology
Along with the development of science and technology, improving constantly of automatization level, instrument and meter for automation uses field to become more and more extensive, instrumentation throughout each post of production, and to each equipment.The monitoring accuracy of instrument and meter for automation requires all higher, generally all reaches 0.2 grade, on the high side.Therefore, in daily maintenance, will carry out in strict accordance with the verification operation code of instrument, guarantee production long-term safety is stably run.
In industrial automation is produced, intelligent instrument is widely used in the measurement of pressure, liquid level, flow.Its output signal, as the Back ground Information of artificial or automatic adjusting process, can be described as the eyes of process operator.The accuracy of measurement height of intelligent instrument is directly connected to the correctness in technique adjustment direction, once there is deviation, not only there will be product quality problem, even can threaten the person and device security.Therefore before intelligent instrument uses, or when using in a year or so, we must carry out a series of adjustment to it, make the performance of product meet the requirement of precision.
For the student of colleges and universities, in learning process, skillfully must grasp installation and the using method of instrument, lay a solid foundation for student is engaged in production work in the future.Therefore, in teaching process, need the operation that equipment is repeated frequently, student just can be made skillfully to grasp installation and the method for calibration of intelligent instrument, to meet the modern enterprise requirement more and more higher to instrument maintenance personnel.
At present, on the market not used for the instructional device that measuring instrument is installed and verified, can only be learnt by picture and word teaching process middle school student, the installation of measuring instrument and verification are very important knowledge points, often use in work in the future, but student cannot be made to get a real idea of its method by picture and word, whether teacher's real students ' of also having no idea is learned.Therefore need to design a kind of device of imparting knowledge to students, meet the demand of student and teacher.
Summary of the invention
The present invention devises a kind of multifunction instrument calibration equipment for imparting knowledge to students, overcome the defect that existing instrument calibration device is difficult to meet teaching demand, multifunction instrument calibration equipment repeated disassembled and assembled is verified, makes student skillfully grasp installation and the method for calibration of intelligent instrument.
Present invention also offers a kind of method of calibration of transmitter, adopt dry type School Affairs ability of swimming to verify the mode combined, make check results have good adaptability, improve the accuracy of transmitter.
Technical scheme provided by the invention is:
For a multifunction instrument calibration equipment of imparting knowledge to students, comprising:
Base;
Support bar, it is vertically installed on described base;
Floating drum mechanism of cadre school, it is arranged at described support bar top, for installing cadre school's float level meter;
Shui Jiao floating drum mechanism, it is arranged at described support bar side, for installing water school float level meter;
Transmitter mounting rod, it is arranged at the opposite side of described support bar, for installing transmitter.
Preferably, described base upper bottom portion is provided with pulley, so that the movement of described base.
Preferably, described base is provided with tool box, for receiving instrument and instrument.
Preferably, described transmitter mounting rod comprises vertical mounting rod and horizontal mounting bar.
Preferably, floating drum mechanism of described cadre school comprises lower fixture and upper fixing element, the top of described lower fixture and support bar fixes, fixed is installed on above lower fixture by clamping screw, cadre school's float level meter is installed between lower fixture and upper fixing element, is clamped by cadre school's float level meter by lower fixture and upper fixing element.
Preferably, described Shui Jiao floating drum mechanism comprises two the first flanges in arranging up and down, and water school float level meter is provided with two the second flanges, the first flange and the second flange are bolted, and are installed in Shui Jiao floating drum mechanism by water school float level meter.
Preferably, described transmitter is fixed on transmitter mounting rod by U-shaped circle.
A kind of transmitter method of calibration, use the above-mentioned multifunction instrument calibration equipment for imparting knowledge to students, and the transmitter in the transmitter in cadre school's float level meter, water school float level meter and the transmitter be installed on transmitter mounting rod adopt same transmitter, comprise the following steps:
Step one, the range 0 ~ H of transmitter is on average divided into n+1 measurement point H 0, H 1, H 2, Λ H n, wherein, i-th measurement point is
Step 2, verifying the transmitter in cadre school's float level meter, in i-th verification, is m by the quality settings of counterweight i=ρ H i, measured value is h ai;
Step 3, the transmitter in the float level meter of water school to be verified, in i-th verification, the liquid level in the float level meter of water school is set to H i, measured value is h bi;
Step 4, find the transmitter measured value h be installed on transmitter mounting rod cthe interval at place, makes H i≤ h c≤ H i+1;
Step 5, according to following formulae discovery to measured value h cprocess, obtain precise measurements H c:
H c = 1 2 [ H i + H i + 1 + | H i - h b i | ( H i - h a i ) | H i - h a i | + | H i + 1 - h a ( i + 1 ) | + | H i - h a i | ( H i - h b i ) | H i - h a i | + | H i + 1 - h a ( i + 1 ) | ] .
The invention has the beneficial effects as follows: the multifunction instrument calibration equipment for imparting knowledge to students provided by the invention, can complete installation and the verifying function of multiple instrument, mainly to the cadre school of float level meter and the installation of water school and intelligent transducer and verification.In addition, this invention can facilitate moves easily, and the teaching process according to course is imparted knowledge to students to any vacant lot, can meet different majors student, teacher, carry out skills training Enterprise Staff use.
Accompanying drawing explanation
Fig. 1 is the multifunction instrument calibration equipment general structure schematic diagram for imparting knowledge to students of the present invention.
Fig. 2 is that the multifunction instrument calibration equipment instrument for imparting knowledge to students of the present invention installs decomposition view.
Fig. 3 is cadre school of the present invention float level meter scheme of installation.
Fig. 4 is water school of the present invention float level meter structural representation.
Fig. 5 is the horizontal scheme of installation of transmitter of the present invention.
Fig. 6 is the vertical scheme of installation of transmitter of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to instructions word to make those skilled in the art.
As shown in Figure 1, the invention provides a kind of multifunction instrument calibration equipment for imparting knowledge to students, comprising support 1, securing cover plate 2, set bolt 3, support bar 4, vertically mounting rod 5, horizontal mounting bar 6, lower fixture 7, upper fixing element 8, clamping screw 9, joint flange 1 and tool box 11.
Described support 1 is welded by angle bar, and securing cover plate 2 is placed in above support 1, and is locked by set bolt 3 pairs of securing cover plates 2 and support 1.What support bar 4 was vertical is placed in above securing cover plate 2, and fixing by mode and the securing cover plate 2 of welding.Vertical mounting rod 5 and horizontal mounting bar 6 are separately fixed on support bar 4.Vertical mounting rod 5 is for the vertical installation of transmitter, and horizontal mounting bar 6 is installed for the level of transmitter.Support bar 4 is still provided with the first flange 10.Lower fixture 7 is installed on the top of support bar 4, and upper fixing element 8 is positioned at the top of lower fixture 7, installs cadre school's float level meter 12 between lower fixture 7 and upper fixing element 8, and lower fixture 7 and upper fixing element 8 are locked by clamping screw 9.Tool box 11 is arranged on support 1, for receiving instrument and instrument.
As shown in Figure 2, equipment support bar 4 installed comprise cadre school's float level meter 12, chaining 13, pallet 14, counterweight 15, the 2 16, blind plate 17, water school float level meter 18, glass plate liquid level gauge 19, float chamber 20, sewage draining exit 21, transparent plastic hose 22, funnel 23, transmitter 24, bracket 25, U-shaped circle 26.
Consult Fig. 3 in the lump, cadre school's float level meter 12 is horizontally disposed with, and is installed between lower fixture 7 and upper fixing element 8, by the locking of clamping screw 9, cadre school's float level meter 12 is clamped by lower fixture 7 and upper fixing element 8, prevents from producing during verification moving.One end of cadre school's float level meter 12 is provided with chaining 13, and chaining 13 lower end is connected with pallet 14, and pallet 14 is placed counterweight 15, for extension weight during float level meter 12 cadre school of cadre school.
Consult Fig. 4 in the lump, water school float level meter 18 is connected with bolt with the second flange 16 by the first flange 10, and blind plate 17 is arranged in the middle of the first flange 10 and the second flange 16, and when preventing from verifying, water overflows.The below of water school float level meter 18 is provided with glass plate liquid level gauge 19, liquid level display during for verifying.Sewage draining exit 21 and funnel 23 are connected and sealed by transparent plastic hose 22, when verifying, add the water yield of required liquid level in the float chamber 20 of funnel 14 place feedwater school float level meter 18.Floating drum 27 is articulated on water school float level meter 18, and the water injected by sewage draining exit 21 enters into float chamber 20, and floating drum 27 carries out work according to Archimedes principle.
Consult Fig. 5, Fig. 6 in the lump, transmitter 24 and bracket 25 are vertically installed by U-shaped circle 26 and are fixed on vertical mounting rod 5, or U-shaped circle 26 and bracket 25 installation of transmitter 24 level are fixed on horizontal mounting bar 6.During installation, transmitter 24 and bracket 25 are fixed together by fastening bolt 28, with U-shaped circle 26, bracket 25 are installed vertical for transmitter 24 and be fixed on vertical mounting rod 5 or on horizontal mounting bar 6 afterwards.
The process that multifunction instrument calibration equipment for imparting knowledge to students provided by the invention carries out verifying is as follows:
Float level meter cadre school operates: the multifunction instrument calibration equipment for imparting knowledge to students provided by the invention is placed into workplace.First cadre school's float level meter 12 is lain in a horizontal plane on lower fixture 7, afterwards upper fixing element 8 is placed on above cadre school's float level meter 12, by clamping screw 9, cadre school's float level meter 12 is firmly fixed between upper fixing element 8 and lower fixture 7.Then pallet 14 being hung on chaining 13, by calculating, in pallet 1, placing suitable counterweight 15, according to the method for calibration of regulation, complete the adjustment to cadre school's float level meter 12.
Float level meter water school operates: during work, first the multifunction instrument calibration equipment being used for imparting knowledge to students is moved to required workplace, blind plate 17 is placed on the centre of the first flange 10 and the second flange 16, be tightened by bolts, water school float level meter 18 is fixed, then transparent plastic hose 22 is connected and sealed with sewage draining exit 21 and funnel 23 respectively, last at funnel 23 place, water is injected in float chamber 20, by the liquid level indicated value of sight glass plate liquid level gauge 19, according to the method for calibration of regulation, accurately water is added to the checkpoint of regulation, complete the verification to water school float level meter 18.
Transmitter verification operation: during installation, according to teaching needs, is fixed together transmitter 24 and bracket 25 by fastening bolt 28, afterwards with U-shaped circle 26 bracket 25 vertical or level installation and fixing transmitter 24.During installation, note firmly, not allowing to loosen.Afterwards, according to the method for calibration of regulation, complete transmitter verification operation.
Present invention also offers a kind of method of calibration of transmitter, principle is by the check results to the transmitter on cadre school's float level meter 12, analyze with the check results of the transmitter on water school float level meter 18, a kind of algorithm is proposed, draw the measuring error trend of transmitter, making to be installed on transmitter 24 on vertical mounting rod 5 or horizontal mounting bar 6 when measuring, measurement result more accurately can be obtained, namely the measured value of this transmitter 24 is revised.
In order to obtain check results accurately, just need make the transmitter in the transmitter in cadre school's float level meter 12, water school float level meter 18, and the transmitter 24 be installed on vertical mounting rod 5 or horizontal mounting bar 6 is same transmitters.
First the range 0-H of transmitter is on average divided into n+1 measurement point, i.e. H 0, H 1, H 2, Λ H n, wherein, i-th measurement point is
Transmitter in cadre school's float level meter 12 is verified.Using cadre school's float level meter 12 to carry out this verification of n, wherein, in i-th verification, is m by the quality settings of counterweight i=ρ H i, now measured value is h ai.Wherein, ρ is fluid density.
Transmitter in water school float level meter 18 is verified.Use water school float level meter 18 to carry out this verification of n, wherein, in i-th verification, liquid level in floating drum is set to H i, now measured value is h bi.
Verified with ability of swimming by above dry type verification, obtain corresponding measured value.By the analyzing and processing to measured value, obtain the measuring error of transmitter.
When the use transmitter 24 be installed on vertical mounting rod 5 or horizontal mounting bar 6 carries out actual measurement, actual measured value h can be obtained c, need to process this measured value, to eliminate the error of transmitter 24, thus obtain more accurate measured value H c.
To measured value h cithe method of process is:
First measured value h is found cinterval, meet H i≤ h c≤ H i+1, then then according to following formulae discovery precise measurements H c
H c = 1 2 [ H i + H i + 1 + | H i - h b i | ( H i - h a i ) | H i - h a i | + | H i + 1 - h a ( i + 1 ) | + | H i - h a i | ( H i - h b i ) | H i - h a i | + | H i + 1 - h a ( i + 1 ) | ] .
Although embodiment of the present invention are open as above, but it is not restricted to listed in instructions and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.

Claims (8)

1. the multifunction instrument calibration equipment for imparting knowledge to students, is characterized in that, comprising:
Base;
Support bar, it is vertically installed on described base;
Floating drum mechanism of cadre school, it is arranged at described support bar top, installs cadre school's float level meter for level;
Shui Jiao floating drum mechanism, it is arranged at described support bar side, for vertically installing water school float level meter;
Transmitter mounting rod, it is arranged at the opposite side of described support bar, for installing transmitter.
2. the multifunction instrument calibration equipment for imparting knowledge to students according to claim 1, is characterized in that, described base upper bottom portion is provided with pulley, so that the movement of described base.
3. the multifunction instrument calibration equipment for imparting knowledge to students according to claim 1 and 2, is characterized in that, described base is provided with tool box, for receiving instrument and instrument.
4. the multifunction instrument calibration equipment for imparting knowledge to students according to claim 3, is characterized in that, described transmitter mounting rod comprises vertical mounting rod and horizontal mounting bar.
5. the multifunction instrument calibration equipment for imparting knowledge to students according to claim 3, it is characterized in that, floating drum mechanism of described cadre school comprises lower fixture and upper fixing element, the top of described lower fixture and support bar fixes, fixed is installed on above lower fixture by clamping screw, cadre school's float level meter is installed between lower fixture and upper fixing element, is clamped by cadre school's float level meter by lower fixture and upper fixing element.
6. the multifunction instrument calibration equipment for imparting knowledge to students according to claim 3, it is characterized in that, described Shui Jiao floating drum mechanism comprises two the first flanges in arranging up and down, water school float level meter is provided with two the second flanges, first flange and the second flange are bolted, and are installed in Shui Jiao floating drum mechanism by water school float level meter.
7. the multifunction instrument calibration equipment for imparting knowledge to students according to claim 3, it is characterized in that, described transmitter is fixed on transmitter mounting rod by U-shaped circle.
8. a transmitter method of calibration, it is characterized in that, use the multifunction instrument calibration equipment for imparting knowledge to students according to any one of claim 1-7, and the transmitter in the transmitter in cadre school's float level meter, water school float level meter and the transmitter be installed on transmitter mounting rod adopt same transmitter, comprise the following steps:
Step one, the range 0 ~ H of transmitter is on average divided into n+1 measurement point H 0, H 1, H 2, Λ H n, wherein, i-th measurement point is i=0,1,2, Λ, n;
Step 2, verifying the transmitter in cadre school's float level meter, in i-th verification, is m by the quality settings of counterweight i=ρ H i, measured value is h ai;
Step 3, the transmitter in the float level meter of water school to be verified, in i-th verification, the liquid level in the float level meter of water school is set to H i, measured value is h bi;
Step 4, find the transmitter measured value h be installed on transmitter mounting rod cthe interval at place, makes H i≤ h c≤ H i+1;
Step 5, according to following formulae discovery to measured value h cprocess, obtain precise measurements H c:
H c = 1 2 [ H i + H i + 1 + | H i - h b i | ( H i - h a i ) | H i - h a i | + | H i + 1 - h a ( i + 1 ) | + | H i - h a i | ( H i - h b i ) | H i - h a i | + | H i + 1 - h a ( i + 1 ) | ] .
CN201510902356.9A 2015-12-08 2015-12-08 A kind of multifunction instrument calibration equipment and transmitter method of calibration for teaching Active CN105374253B (en)

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CN105374253B CN105374253B (en) 2018-08-10

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143849A (en) * 1991-03-21 1992-09-01 Eastman Kodak Company Tip to surface spacing for optimum dispensing controlled by a detected pressure change in the tip
CN204202712U (en) * 2014-11-12 2015-03-11 辽宁石化职业技术学院 A kind of float level meter cadre school device
CN204229687U (en) * 2014-12-02 2015-03-25 辽宁石化职业技术学院 A kind of movable multifunctional instrument instructional device
CN204649282U (en) * 2014-11-25 2015-09-16 辽宁石化职业技术学院 A kind of use for laboratory float level meter water calibration device
CN205281868U (en) * 2015-12-08 2016-06-01 辽宁石化职业技术学院 A multi -functional instrument calibration equipment for teaching

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143849A (en) * 1991-03-21 1992-09-01 Eastman Kodak Company Tip to surface spacing for optimum dispensing controlled by a detected pressure change in the tip
CN204202712U (en) * 2014-11-12 2015-03-11 辽宁石化职业技术学院 A kind of float level meter cadre school device
CN204649282U (en) * 2014-11-25 2015-09-16 辽宁石化职业技术学院 A kind of use for laboratory float level meter water calibration device
CN204229687U (en) * 2014-12-02 2015-03-25 辽宁石化职业技术学院 A kind of movable multifunctional instrument instructional device
CN205281868U (en) * 2015-12-08 2016-06-01 辽宁石化职业技术学院 A multi -functional instrument calibration equipment for teaching

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