CN109813630A - A kind of sampling type gradiomanometer and its density measuring method - Google Patents
A kind of sampling type gradiomanometer and its density measuring method Download PDFInfo
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- CN109813630A CN109813630A CN201711167845.XA CN201711167845A CN109813630A CN 109813630 A CN109813630 A CN 109813630A CN 201711167845 A CN201711167845 A CN 201711167845A CN 109813630 A CN109813630 A CN 109813630A
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- sampling
- diaphragm
- pressure difference
- gradiomanometer
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- 238000005070 sampling Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims description 13
- 238000005259 measurement Methods 0.000 claims abstract description 42
- 239000000523 sample Substances 0.000 claims abstract description 34
- 238000001739 density measurement Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
A kind of sampling type gradiomanometer, the densitometer include probe tube and vertically arranged sampling cylinder, one end of probe tube be used to be connected to ore pulp delivery duct be sampled, other end connection is in the bottom for sampling cylinder；So being equipped with piston or diaphragm in sampling cylinder, the power device for driving piston or diaphragm to move up and down in sampling cylinder is connected on piston or diaphragm；The densitometer is additionally provided with pressure difference measuring device, and the upper and lower part for sampling cylinder is respectively equipped with the measurement interface cooperated with pressure difference measuring device measurement end, and pressure difference measuring device is mounted on sampling cylinder by measurement end and measurement Interference fit.Sampling type gradiomanometer provided by the invention is simple and practical, safe and reliable, and pulp density measures quick and precisely, and the pulp density especially suitable for low pressure ore pulp delivery duct measures.
Description
Technical field
The present invention relates to a kind of densitometer, especially a kind of sampling type gradiomanometer further relates to it and carries out density measure
Method.
Background technique
The existing country selects pulp density measurement in factory's ore pulp delivery duct to mostly use nuclear density gauge, and this method measures advantage
It is accurate for measurement density, but the equipment will form certain nuclear radiation, to selecting factory unmarried unfertilized operator and maintenance of equipment
Personnel's health exerts a certain influence.And gradiomanometer domestic at present is mounted on main pipeline more, and be responsible for
Road is because the reason of pump conveying, will cause pulp conveying pressure difference shakiness, and flow rate of pulp is excessively high in main pipeline, and pressure difference transmitter connects
Pipe damage is excessive between mouthful, therefore causes gradiomanometer deviation of reading larger and upper and lower fluctuation is serious.
Summary of the invention
It is reasonable, simple real the technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of design
Convenient sampling type gradiomanometer is measured with, pulp density.
Another technical problem to be solved by this invention is close there is provided using above-mentioned sampling type gradiomanometer to carry out
Spend the method for measurement.
The technical problem to be solved by the present invention is to what is realized by technical solution below.The present invention is a kind of sampling
Formula gradiomanometer, the densitometer include probe tube and vertically arranged sampling cylinder, and one end of probe tube is used for and pulp conveying
Pipeline connection is sampled, other end connection is in the bottom of sampling cylinder；So sampling cylinder in be equipped with piston or diaphragm, piston or every
The power device for driving piston or diaphragm to move up and down in sampling cylinder is connected on film；The densitometer is additionally provided with pressure difference survey
Device is measured, the upper and lower part for sampling cylinder is respectively equipped with the measurement interface cooperated with pressure difference measuring device measurement end, pressure difference measurement
Device is mounted on sampling cylinder by measurement end and measurement Interference fit.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The sampling type gradiomanometer, the power device are electric pushrod or hydraulic pushing device, electric pushrod or hydraulic thrust
The output end of dynamic device is protruded into sampling cylinder and is connect with piston or diaphragm, for driving piston or diaphragm to move up and down.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The sampling type gradiomanometer, the pressure difference measuring device are differential pressure pickup or differential pressure transmitter.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The sampling type gradiomanometer, the pressure difference measuring device are diaphragm differential pressure transmitter.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The promotion pressure of the sampling type gradiomanometer, the power device is at least 1KG bigger than the pressure of ore pulp in pipeline.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The sampling type gradiomanometer, the speed that the piston or diaphragm move up and down are 1.2m/s-2.5m/s.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The sampling type gradiomanometer, the distance that the piston or diaphragm move up and down are 1.15m-1.5m.
The technical problems to be solved by the invention can also be further realized by technical solution below, for above
The sampling type gradiomanometer, the probe tube and sampling cylinder are all made of high pressure resistant glass and are made.
The technical problems to be solved by the invention can also be further realized by technical solution below, the invention discloses
A kind of measurement carrying out pulp density using sampling type gradiomanometer described in above technical scheme, its step are as follows:
(1) starting power device driving piston or diaphragm rise to the top of sampling cylinder upwards, by probe tube by pulp conveying
Ore pulp sucking sampling cylinder in pipeline；
(2) after pressure difference measuring device reading is basicly stable, the reading of pressure difference is read, is then pressed using pressure difference divided by two
The difference in height of difference measurements point, resulting value is again divided by local gravity acceleration value, the density value of you can get it ore pulp；
(3) starting power device driving piston or diaphragm pass through the ore pulp sampled in cylinder to the lowermost end for dropping to sampling cylinder
Probe tube pushes back ore pulp delivery duct；
(4) it repeats the above steps and carries out multiple pulp density measurement, calculate more accurate pulp density value.
Compared with prior art, the present invention drives piston or diaphragm to twitch in sampling cylinder by mine by power device
Ore pulp in slurry conveyance conduit is drawn into sampling cylinder by probe tube, and the pressure difference of ore pulp is measured using pressure difference measuring device,
Then the density value of ore pulp is calculated according to pressure difference；After to one-shot measurement, the ore pulp of sampling can be pushed back pulp conveying
Pipeline can carry out the multiple measurement value of pulp density, repeatedly in the hope of more accurate pulp density.The densitometer
Simple and practical, safe and reliable, measurement pulp density quick and precisely, survey by the pulp density especially suitable for low pressure ore pulp delivery duct
Amount.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention；
Fig. 2 is a kind of schematic diagram that the present invention is applied to vertical ore pulp delivery duct；
Fig. 3 is a kind of schematic diagram that the present invention is applied to horizontal pulp conveyance conduit.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, right below in conjunction with attached drawing of the present invention
Technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is a part of the invention
Embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making wound
Every other embodiment obtained under the premise of the property made labour, shall fall within the protection scope of the present invention.
Embodiment 1, referring to Fig.1-3, a kind of sampling type gradiomanometer, which includes probe tube 1 and vertically arranged
Sampling cylinder 2, one end of probe tube 1 be used to be connected to ore pulp delivery duct be sampled, other end connection is at the bottom for sampling cylinder 2
Portion；So being equipped with piston or diaphragm 6 in sampling cylinder 2, it is connected on piston or diaphragm 6 for driving piston or diaphragm 6 sampling
The power device 5 moved up and down in cylinder 2；The densitometer is additionally provided with pressure difference measuring device 3, the upper and lower part difference of sampling cylinder 2
Equipped with the measurement interface 4 cooperated with 3 measurement end of pressure difference measuring device, pressure difference measuring device 3 is matched by measurement end and measurement interface 4
Conjunction is mounted on sampling cylinder 2.Probe tube 1 with ore pulp delivery duct for being connected to, convenient for the sampling of ore pulp；Sampling cylinder 2 is set vertically
It sets, the ore pulp for containing sampling is convenient for the measurement of ore pulp pressure difference；Power device 5 is used for band piston or diaphragm 6 exists
It is moved in sampling cylinder 2, to extract ore pulp out of ore pulp delivery duct；Pressure difference measuring device 3 is for measuring ore pulp in sampling cylinder 2
Pressure difference, convenient for pass through pressure difference carry out pulp density value calculating；Two measurement interface 4 settings are in sampling 2 the same side of cylinder
And it is vertically aligned, not only facilitates the setting of 3 measurement end of pressure difference measuring device, also facilitate the measurement of ore pulp pressure difference.
The power device 5 is electric pushrod or hydraulic pushing device, the output end of electric pushrod or hydraulic pushing device
It protrudes into sampling cylinder 2 and is connect with piston or diaphragm 6, for driving piston or diaphragm 6 to move up and down.Electric pushrod is usually used
Driving piston moves in sampling cylinder 2, carries out the extraction and release of ore pulp；Using hydraulic pushing device driving diaphragm in sampling cylinder
It is moved in 2, carries out the extraction and release of ore pulp；Hydraulic pushing device is hydraulic thrust lever or hydraulic cylinder.
The pressure difference measuring device 3 is differential pressure pickup or differential pressure transmitter.Differential pressure pickup is a kind of for measuring two
The sensor of difference between a point pressure, is commonly used to measure the pressure difference of a certain equipment or component rear and front end；Differential pressure transmitter
It is the transmitter of the difference of measuring transducer pressure at two ends, exports pressure difference signal；Differential pressure pickup is applicable with differential pressure transmitter
The pressure difference measurement of ore pulp is carried out in the present invention.
The pressure difference measuring device 3 is diaphragm differential pressure transmitter.Diaphragm differential pressure transmitter is widely used in liquid, gas
Body, steam differential pressure measurement, liquid level measurement, measure especially suitable for the pressure difference of viscous liquid or slurry, have precision high, steady
The advantages of qualitative good, strong antijamming capability, is quite suitable for ore pulp pressure difference measurement of the invention.
The promotion pressure of the power device 5 is at least 1KG bigger than the pressure of ore pulp in pipeline.1KG is 1kg/cm^2, is referred to
The object of 1kg weight acts on generated pressure on 1 square centimeter of area, because 1kg/cm^2=10N/cm^2=10^5Pa=
0.1MPa, so 1kg/cm^2=0.1MPa, is not only convenient for the measurement that pressure difference measuring device 3 carries out pressure difference, can also effectively keep away
Exempt from ore pulp and sedimentation phenomenon occurs, convenient for the sampling pulp in ore pulp delivery duct.
The speed that the piston or diaphragm 6 move up and down is 1.2m/s-2.5m/s, and specific speed can be according to ore pulp property tune
Section guarantees that ore pulp will not settle in sampling cylinder 2.
The distance that the piston or diaphragm 6 move up and down is 1.15m-1.5m.The piston or diaphragm 6 move up and down most
Excellent distance is 1.2m, and the distance between two measurement interfaces 4 are 0.8m, is not only convenient for quickly carrying out the density measure of ore pulp, and
And ore pulp differential pressure measurement fluctuation range can be effectively reduced, so that the density measure of ore pulp is more acurrate.
The probe tube 1 and sampling cylinder 2 are all made of high pressure resistant glass and are made.The probe tube 1 of high pressure resistant glass production
Have the advantages that high pressure resistant, high-intensitive and nonstaining property with sampling cylinder 2, while being also convenient for external observation sampling 2 inside ore pulp of cylinder
The case where.
A kind of method of sampling type density measure, its step are as follows:
(1) starting power device 5 drives piston or diaphragm 6 to rise to the top of sampling cylinder 2 upwards, by probe tube 1 by ore pulp
Ore pulp sucking sampling cylinder 2 in conveyance conduit；
(2) after pressure difference measuring device 3 read it is basicly stable after, read the reading of pressure difference, then using pressure difference divided by two
The difference in height of pressure difference measurement point, resulting value is again divided by local gravity acceleration value, the density value of you can get it ore pulp；
(3) starting power device 5 drives piston or diaphragm 6 to the lowermost end for dropping to sampling cylinder 2, will sample the ore pulp in cylinder 2
Ore pulp delivery duct is pushed back by probe tube 1；
(4) it repeats the above steps and carries out multiple pulp density measurement, calculate more accurate pulp density value.
The present invention is applicable for vertical ore pulp delivery duct 7 and horizontal pulp conveyance conduit 8, is being applied to vertical mine
When starching conveyance conduit 7, probe tube is obliquely installed, the upper beveled end of probe tube is equipped with elbow, is guaranteed probe tube and is vertically arranged
Sample cylinder connection, the lower beveled end of probe tube is connected to vertical ore pulp delivery duct, probe tube and vertical ore pulp delivery duct it
Between the angle of angle that is formed be 30 ° -60 °, optimal angle is 45 °, convenient for preferably carrying out the sampling of ore pulp.
The invention also includes outer computers, for receiving the pressure difference of pressure difference measuring device measurement, and according to pressure difference
Density value is calculated, specific formula is that density value is equal to pressure difference divided by the difference in height of two pressure difference measurement points, and resulting value removes again
With local gravity acceleration value, density value can be obtained；When needing to carry out Density Detection, start power device, by piston
Or diaphragm is up-shifted to top from sampling cylinder bottom portion, samples so that ore pulp in ore pulp delivery duct be sucked by probe tube
Cylinder calculates density value by outer computer after pressure difference measuring device measuring signal is stable and is transmitted to outer computer；It connects
Restart power device, will sampling cylinder in ore pulp push back ore pulp delivery duct, the more of pulp density can be realized repeatedly
Secondary measurement value；Pulp density measurement is carried out using the present invention, it can be with backtracking to ore pulp after the ore pulp measurement of sampling
Conveyance conduit does not waste ore pulp not only, but also without the concern for the processing problem of sampling ore pulp.
The present invention is suitable for being installed on the low pressure ore pulp delivery duct of any direction, select factory, troilite choosing to grow suitable for phosphorus ore,
Metallic ore selects the pulp density in the ore pulp delivery duct of factory to measure.
The present invention some specific part requirements in practical application: (1) generally make to sample cylinder compared with the big level-one of probe tube, such as
Probe tube caliber >=DN40 samples cylinder diameter >=DN50；Sample cylinder preferably with high pressure resistant glass structure, and with probe tube and difference
Pressure transmitter is coupled using flange；(2) differential pressure transmitter uses diaphragm differential pressure transmitter；(3) cylinder inner piston or diaphragm are sampled
Range ability >=1200mm in sampling cylinder；(4) it samples in cylinder and sets piston or diaphragm, it is desirable that piston or diaphragm are in pressure
When 10kg, no leakage mine spillage phenomenon；(5) piston or diaphragm be when moving, it is desirable that ore pulp pressure speed of service in 10kg is
1.2m/s-2.5m/s, carrying out practically speed can be adjusted according to ore pulp ore properties, guarantee that ore pulp does not occur sedimentation and is advisable.
Embodiment 2 makes differential density measure instrument for Tailings Slurry density measure at first, is used to refer in Wengfu dressing plant
Lead the control of Tailings Slurry concentration, scheme be: be mounted directly double flange differential pressures on the vertical main pipeline of underflow of concentrator and become
Device is sent, the measurement distance between two flanges is 2m, and from bottom to up, double flanges differential pressure transmitter uses international well-known product to flow direction
Board；But for the discovery program because the flow velocity of ore pulp is excessively high, flow velocity >=2.0m/s causes measured value not after the application more than half a year
Stablize, fluctuation is larger, and undulating value is in 0.920-1.250t/m3Between constantly beat, however normal density range should be:
1.090-1.170 t/m3；So using the obtained process measurements of the measurement scheme to the Instructing manufacture of technique just without too
Big reference significance.The flow velocity for being adjusted bypass branch using valve from bypass branch after consideration afterwards has just been used herein
In sampling type pressure difference density measure scheme, measured value also becomes process measurement from original wide fluctuations after reducing flow velocity
Value fluctuation is smaller, fluctuates in decimal point second, and the process values and artificial repeatedly sampling analysis value measured are closer to, right
Instructing manufacture plays a good role.
Claims (9)
1. a kind of sampling type gradiomanometer, it is characterised in that: the densitometer includes probe tube and vertically arranged sampling cylinder, is taken
One end of sample pipe be used for be connected to ore pulp delivery duct be sampled, the other end connection sample cylinder bottom；The sampling cylinder
It is interior to be equipped with piston or diaphragm, the power for driving piston or diaphragm to move up and down in sampling cylinder is connected on piston or diaphragm
Device；The densitometer is additionally provided with pressure difference measuring device, and the upper and lower part for sampling cylinder is respectively equipped with to be measured with pressure difference measuring device
The measurement interface of cooperation is held, pressure difference measuring device is mounted on sampling cylinder by measurement end and measurement Interference fit.
2. sampling type gradiomanometer according to claim 1, it is characterised in that: the power device be electric pushrod or
The output end of hydraulic pushing device, electric pushrod or hydraulic pushing device is protruded into sampling cylinder and is connect with piston or diaphragm, is used for
Driving piston or diaphragm move up and down.
3. sampling type gradiomanometer according to claim 1, it is characterised in that: the pressure difference measuring device is pressure difference biography
Sensor or differential pressure transmitter.
4. sampling type gradiomanometer according to claim 1, it is characterised in that: the pressure difference measuring device is diaphragm type
Differential pressure transmitter.
5. sampling type gradiomanometer according to claim 1, it is characterised in that: the promotion pressure of the power device is extremely
It is few 1KG bigger than the pressure of ore pulp in pipeline.
6. sampling type gradiomanometer according to claim 1, it is characterised in that: what the piston or diaphragm moved up and down
Speed is 1.2m/s-2.5m/s.
7. sampling type gradiomanometer according to claim 1, it is characterised in that: what the piston or diaphragm moved up and down
Distance is 1.15m-1.5m.
8. sampling type gradiomanometer according to claim 1, it is characterised in that: the probe tube and sampling cylinder are all made of
High pressure resistant glass is made.
9. a kind of method of sampling type density measure, it is characterised in that: this method uses described in claim 1-8 any one
Sampling type gradiomanometer carry out pulp density measurement, its step are as follows:
(1) starting power device driving piston or diaphragm rise to the top of sampling cylinder upwards, by probe tube by pulp conveying
Ore pulp sucking sampling cylinder in pipeline；
(2) after pressure difference measuring device reading is basicly stable, the reading of pressure difference is read, is then pressed using pressure difference divided by two
The difference in height of difference measurements point, resulting value is again divided by local gravity acceleration value, the density value of you can get it ore pulp；
(3) starting power device driving piston or diaphragm pass through the ore pulp sampled in cylinder to the lowermost end for dropping to sampling cylinder
Probe tube pushes back ore pulp delivery duct；
(4) it repeats the above steps and carries out multiple pulp density measurement, calculate more accurate pulp density value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167845.XA CN109813630A (en) | 2017-11-21 | 2017-11-21 | A kind of sampling type gradiomanometer and its density measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167845.XA CN109813630A (en) | 2017-11-21 | 2017-11-21 | A kind of sampling type gradiomanometer and its density measuring method |
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| CN109813630A true CN109813630A (en) | 2019-05-28 |
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| CN201711167845.XA Pending CN109813630A (en) | 2017-11-21 | 2017-11-21 | A kind of sampling type gradiomanometer and its density measuring method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114869762A (en) * | 2022-05-10 | 2022-08-09 | 浙江厚达智能科技股份有限公司 | Method for controlling concentration density of traditional Chinese medicine decoction |
| DE102021126559A1 (en) | 2021-10-13 | 2023-04-13 | Volkswagen Aktiengesellschaft | Device for measuring a pressure difference |
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Application publication date: 20190528 |
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| RJ01 | Rejection of invention patent application after publication |