CN1046977A - Differential pressure transmitter is measured vacuum salt production salt slurry solid-to-liquid ratio - Google Patents
Differential pressure transmitter is measured vacuum salt production salt slurry solid-to-liquid ratio Download PDFInfo
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- CN1046977A CN1046977A CN 90105829 CN90105829A CN1046977A CN 1046977 A CN1046977 A CN 1046977A CN 90105829 CN90105829 CN 90105829 CN 90105829 A CN90105829 A CN 90105829A CN 1046977 A CN1046977 A CN 1046977A
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- liquid ratio
- differential pressure
- pressure transmitter
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Abstract
The invention provides a kind of method of measuring vacuum salt production evaporation concentrator inner salt slurry solid-to-liquid ratio with differential pressure transmitter.The characteristics of this method are to adopt differential pressure transmitter to measure the material density variable quantity and measure the solid-to-liquid ratio variable quantity of material.The general this method that adopts is measured vacuum salt production evaporation concentrator inner salt slurry solid-to-liquid ratio than conventional method, have inexpensive, but continuous coverage, reading is directly perceived, characteristics such as accuracy height, favourable timely control material changes row, energy savings.
Description
Differential pressure transmitter of the present invention is measured the salt slurry solid-to-liquid ratio of vacuum salt production, relates in a kind of employing differential pressure transmitter continuous coverage vacuum salt production production the method for heating evaporation concentrator inner salt slurry solid-to-liquid ratio.Be applicable to that material circulation heating evaporation in the vacuum evaporation concentrator concentrates, solid-to-liquid ratio METHOD FOR CONTINUOUS DETERMINATION in the solid-liquid mixing system that the crystallization solid content separates out is arranged, be particularly useful in the vacuum salt production production run METHOD FOR CONTINUOUS DETERMINATION of each heating evaporation concentrator inner salt slurry solid-to-liquid ratio.
Existing vacuum evaporation to the mensuration of material solid-to-liquid ratio, is adopted assay methods such as supercritical ultrasonics technology, photoelectric method, radioelement rays method in concentrating and producing usually.Supercritical ultrasonics technology is measured the material solid-to-liquid ratio, and often the problem that has a large amount of steam bubbles influence accuracy of measurement in evaporation process because of material is difficult to solve; When photoelectric method is measured the material solid-to-liquid ratio, also because of factor affecting accuracies of measurement such as the color and luster of material, turbidity, steam bubbles; The radioelement rays method is subjected to environmental baseline, and the restriction of operating conditions and economic condition is difficult to promote.Measuring salt slurry solid-to-liquid ratio method commonly used in the domestic vacuum salt production production is artificial visually examine's volume ratio, promptly judges heating evaporation concentrator inner salt slurry solid-to-liquid ratio by rule of thumb by sampling.But this method is measured solid-to-liquid ratio can not be continuous, and poor accuracy is difficult to reach ideal effect.Can not give to produce realize that control automatically provides continuously concentrator inner salt slurry solid-to-liquid ratio data accurately, it is big to be directed in the vacuum salt production production run thermal loss, produces uneconomical.
The purpose of this invention is to provide a kind of physical measurement method, use the method for differential pressure hydrometer method continuous coverage material solid-to-liquid ratio exactly.Adopt double flanges differential pressure transmitter to measure the material density variable quantity, come indirect reaction to go out the variable quantity of this material solid-to-liquid ratio.Used flange differential pressure transmitter is known differential pressure transmitter.Adopt this method to measure vacuum salt production heating concentration evaporator inner salt slurry solid-to-liquid ratio, do not bring influence, also be not subjected to the restriction of environmental baseline to production environment, cheap, easy for operation, be easy to industrialization.
Design of the present invention is to realize like this.In a fixing constant container, the recruitment of crystal volume equates with the reduction of this saturated solution volume, change before and after causing the weight of material in the fixed volume, utilize this variation can measure the content of crystal indirectly, extrapolate the volume of material solid-to-liquid ratio.
Figure one is installed on the vacuum salt production heating evaporation concentrator salt pin for the flange differential pressure transmitter, measures the synoptic diagram of concentrator inner salt slurry solid-to-liquid ratio, also can be installed on the circulation pipe of heating evaporation concentrator.Behind evaporation concentrator inner salt slurry condensing crystallizing, the salt deposition of solid is in salt pin (1), the quality of crystallization salt is given malleation signal of differential pressure transmitter anode (2) (plemum), simultaneously, transmitter negative terminal (6) (negative pressure chamber) should have a signal mutually, and the difference of two pressure signals is sent in the differential pressure transmitter main frame (7) by kapillary (4), converts corresponding standard signal to, standard signal is delivered on the indicating device given in advance, reaches the purpose of measuring the material solid-to-liquid ratio.
In order to solve on the sensor diaphragm because of solid content fouling or caking influence measuring accuracy, this method has adopted installation washpipe (5), solves with light material flushing.Flush time is generally measures one hour post-flush once, and each flush time is not more than 1 minute.Washpipe is installed on the pipe nipple (3) that the heating evaporation concentrator is connected with sensor.
Adopt the present invention to measure vacuum salt production heating evaporation concentrator inner salt slurry solid-to-liquid ratio and have some characteristics like this:
One, the pressure loss is little, good stability;
Two, use is simple to operate, need not worry obstruction;
Three, inexpensive, be easy to industrialization;
Four, can the interior material solid-to-liquid ratio of continuous coverage heating evaporation concentrator.
Adopt the present invention to measure vacuum salt production salt slurry solid-to-liquid ratio, solid-to-liquid ratio improves 10%, changes discharge, and corresponding annual direct economic benefit energy-conservation, that volume increase brings is 0.3 ten thousand yuan/ten thousand tons salt; Be aided with other automatic instrument(s), can prevent caking salt and salt scale coagulation in the heating evaporation concentrator, reducing stops production delays the time, and by reducing 6 days in 1 year and delay Time Calculation, then economic benefit increases to 4.5 ten thousand yuan/ten thousand tons salt every year.
Figure a pair of flange differential pressure transmitter is measured solid-to-liquid ratio synoptic diagram in the vacuum salt production heating evaporation concentrator salt pin;
Figure two double flanges differential pressure transmitter measuring head anodes are at vacuum salt production heating evaporation concentrator salt pin scheme of installation;
The blue differential pressure transmitter measuring head of figure triple-double method negative terminal is at vacuum salt production heating evaporation concentrator salt pin scheme of installation;
Figure four double flanges differential pressure transmitters are measured vacuum salt production heating evaporation concentrator circulation pipe inner salt slurry solid-to-liquid ratio scheme of installation.
Embodiment: the present invention is used for a salt manufacturing factory, double flanges differential pressure transmitter is installed on the salt pin of vacuum salt production heating evaporation concentrator, records data such as following table.
Double flanges differential pressure transmitter is measured the salt slurry solid-to-liquid ratio tables of data in the vacuum salt production evaporation concentrator:
| The sampling situation | Instrument record (volume ratio %) | ||
| Sequence number gross weight (g) | Cumulative volume (ml) directly perceived | True volume is than (%) | |
| 1 339 2 301 3 297 4 294 5 293 | 276 243 242 240 235 | 1.715 2.815 1.661 1.371 3.672 | 2.15 2.00 2.50 1.75 3.15 |
Claims (2)
1, a kind of differential pressure transmitter is measured the method for vacuum salt production salt slurry solid-to-liquid ratio, it is characterized in that using material solid-to-liquid ratio in the differential pressure hydrometer method continuous coverage heating evaporation concentrator is about to measure the solid-to-liquid ratio of material in the concentrator on the salt pin or circulation pipe that the flange differential pressure transmitter is installed in vacuum salt production heating evaporation concentrator.
2, method according to claim 1 is characterized in that light material washpipe being installed, irregularly flushing, anti-caking agllutination dirt on vacuum salt production heating evaporation concentrator and pipe nipple that the differential pressure transmitter sensor is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105829 CN1016278B (en) | 1990-05-26 | 1990-05-26 | Vacuum mfg. salt serous solid-to-liquid ratio determined by differential pressure changing conveying unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90105829 CN1016278B (en) | 1990-05-26 | 1990-05-26 | Vacuum mfg. salt serous solid-to-liquid ratio determined by differential pressure changing conveying unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1046977A true CN1046977A (en) | 1990-11-14 |
| CN1016278B CN1016278B (en) | 1992-04-15 |
Family
ID=4879630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90105829 Expired CN1016278B (en) | 1990-05-26 | 1990-05-26 | Vacuum mfg. salt serous solid-to-liquid ratio determined by differential pressure changing conveying unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016278B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486391A (en) * | 2010-12-03 | 2012-06-06 | 吕武轩 | Bubble type automatic proportion correction liquid level meter |
| CN104436717A (en) * | 2014-12-02 | 2015-03-25 | 湖南省湘衡盐化有限责任公司 | Anti-crystallization device of salt production evaporation pot transmitter |
| CN105509803A (en) * | 2015-12-02 | 2016-04-20 | 中盐工程技术研究院有限公司 | Device for accurately measuring liquid level and solid liquid ratio of salt-making evaporation equipment |
| CN106769656A (en) * | 2016-12-29 | 2017-05-31 | 自贡市轻工业设计研究院有限责任公司 | A kind of method of solid-to-liquid ratio in accurate measurement vacuum evaporator |
-
1990
- 1990-05-26 CN CN 90105829 patent/CN1016278B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486391A (en) * | 2010-12-03 | 2012-06-06 | 吕武轩 | Bubble type automatic proportion correction liquid level meter |
| CN104436717A (en) * | 2014-12-02 | 2015-03-25 | 湖南省湘衡盐化有限责任公司 | Anti-crystallization device of salt production evaporation pot transmitter |
| CN105509803A (en) * | 2015-12-02 | 2016-04-20 | 中盐工程技术研究院有限公司 | Device for accurately measuring liquid level and solid liquid ratio of salt-making evaporation equipment |
| CN106769656A (en) * | 2016-12-29 | 2017-05-31 | 自贡市轻工业设计研究院有限责任公司 | A kind of method of solid-to-liquid ratio in accurate measurement vacuum evaporator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016278B (en) | 1992-04-15 |
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