CN201926903U - Online analyzer for liquid density and content - Google Patents
Online analyzer for liquid density and content Download PDFInfo
- Publication number
- CN201926903U CN201926903U CN2010206260989U CN201020626098U CN201926903U CN 201926903 U CN201926903 U CN 201926903U CN 2010206260989 U CN2010206260989 U CN 2010206260989U CN 201020626098 U CN201020626098 U CN 201020626098U CN 201926903 U CN201926903 U CN 201926903U
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- China
- Prior art keywords
- temperature
- chip microcomputer
- content
- pressure
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 8
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 16
- 239000013078 crystal Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 2
- 239000004973 liquid crystal related substance Substances 0.000 abstract 2
- 230000005672 electromagnetic field Effects 0.000 abstract 1
- 230000010354 integration Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960004217 benzyl alcohol Drugs 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses an online analyzer for liquid density and content. The online analyzer is characterized in that: a pressure sensor, a preamplifier, an analog-to-digital (AD) convertor and a single chip microcomputer are electrically connected with one another; a temperature sensor, a temperature preamplifier and the single chip microcomputer are electrically connected with one another; a pressure signal input from the sensor and a temperature signal input from the temperature sensor can be processed automatically; a liquid crystal display is electrically connected with the single chip microcomputer; a lithium battery is connected with a main circuit; and when liquid flows through the pressure sensor, a pressure signal is amplified by the pressure preamplifier, and is transmitted to the AD convertor and the single chip microcomputer, the liquid temperature sensor transmits a temperature signal to the temperature preamplifier, the preamplifier amplifies the temperature signal and transmits the amplified temperature signal to the single chip microcomputer, the acquired pressure signal and temperature signal are calculated, and density, the content and temperature are transmitted to the liquid crystal display for displaying. The online analyzer has the advantages that: the precision temperature compensation can be performed during flow metering of a liquid chemical product; due to the adoption of an electromechanical integration design, interference of an external electromagnetic field is avoided; power is supplied by an internal power supply (embedded lithium battery), so that an external power supply does not need to be connected, and explosion protection is achieved; and high-accuracy metering can be realized.
Description
Affiliated technical field
The utility model relates to a kind of fluid density content in-line analyzer, especially can be used for the accurate in-line analyzer of fluid chemical product density content.
Background technology
In the present prior art, the density content analysis of fluid chemical product adopts the hand sampling method mostly.For example domestic Formaldehyde Production enterprise needs per hour to analyze once at interval to the density and the content analysis of material benzenemethanol and product formaldehyde, being born 50 from Chinese formaldehyde industry, what for many years continued to use is manually to take a sample at the methanol evaporator sample tap always, send the laboratory just can draw methanol content, be the discontinuous measurement method through manually tabling look-up again behind the density measure.Its shortcoming is that measuring period is long, can not directly monitor the density of methanol evaporator and the variation of methanol content in real time, for technologist's operation brings hysteresis.The inconsistent gross error that causes of personnel operation appears easily.
Summary of the invention
The utility model provides a kind of fluid density content in-line analyzer, this fluid density content in-line analyzer can not only be measured fluid chemical product density and content online in real time, and can be easily on-the-spot display density and content value be converted to 4～20mA standard electric signal and be sent to central control room (CCR) DCS system, realize concentrating monitoring and control, help controlling product quality.
The technical scheme that its technical matters that solves the utility model adopts is: 2 pressure transducers are installed on the vertical official road, be electrically connected with the pressure prime amplifier respectively then, pressure prime amplifier, AD converter and single-chip microcomputer be electrically connected, temperature sensor is installed on the official road, is electrically connected with temperature prime amplifier and single-chip microcomputer, the monolithic function is handled automatically from the temperature signal of the minute-pressure difference signal of 2 pressure transducer inputs and temperature sensor input, LCD is electrically connected with single-chip microcomputer, and lithium battery is connected with main circuit.When liquid passed through pressure transducer, pressure signal sent AD converter to give single-chip microcomputer again after the excess pressure prime amplifier amplifies, and fluid temperature sensor is given the temperature prime amplifier with temperature signal, gave single-chip microcomputer after amplifying.DA converter and single-chip microcomputer are electrically connected.Single-chip microcomputer automatically performs the program that is cured, calculate gathering the pressure signal and the temperature signal of coming in, and with pressure (Kpa), density (gram/cubic centimetre), content (%), temperature (℃) the liquor charging crystal display shows, send the DA converter to convert 4～20mA standard electric signal to density and content simultaneously and be sent to central control room (CCR) DCS system.When fluid temperature changed, single-chip microcomputer can calculate and adjust the accuracy of fluid density and content automatically according to the bulk temperature expansion coefficient of liquid, and reaches the purpose of density content on-line analysis.
The beneficial effects of the utility model are: can realize the on-line analysis of density content to the fluid chemical product, because interior power supply power supply (built-in lithium pond), thus need not external power supply, explosion insulation performance is good.Adopt 16 bit A/D converters, single-chip microcomputer and DA converter, can realize the on-line analysis of pin-point accuracy density content.
Description of drawings
Below in conjunction with accompanying drawing and concrete enforcement the utility model is further described:
Fig. 1 is the utility model fluid density content in-line analyzer schematic block circuit diagram.
1.AD converter in the described schematic block circuit diagram of Fig. 1,2. prime amplifier is put, 3. pressure transducer, 4. mu balanced circuit, 5. high power capacity lithium battery, 6. one-chip computer, 7. time base circuit, 8. LCD is 9. touched button, 10.DA converter, 11. operational amplifier, 12. temperature sensors, 13. pressure transducers, 14. operational amplifier, the 15.AD converter.
Embodiment
Mainly the dsPIC30F (6) that is produced by one-chip computer U.S. Microchip Technology company serves as the data logical operation, data storage, pressure signal is gathered, the A/D collection of temperature signal and the management of complete machine hardware, the WZP-234 platinum resistance thermometer sensor, (calibration Pt100) of selecting the production of Changzhou instrucment and meter plant of HTC for use is as medium temperature sensor (12), keyboard touches button (9) by 4 2P*2 and serves as, LCD (8) is a rectangle, be of a size of the high 39mm of wide 56mm*, LCD one screen is display density simultaneously, content, temperature (Shenzhen Rifda LCD Co., Ltd.'s customization), pressure transducer (3,13) the MPM280 type that adopts Maike Sensor Co., Ltd. to produce.Operational amplifier TLV2731 (11) serves as the preposition amplification of temperature signal, operational amplifier TLV2731 (2,14) serves as the preposition amplification of pressure signal, CD4060 is time base circuit (7), MAX8863 is mu balanced circuit (4), RE26500 is high power capacity lithium battery (5), AD421BN is DA converter (10), and ADS1100 is AD converter (15).When analyser was started working, at first the pressure signal of pressure transducer generation amplified faint pressure signal through operational amplifier TLV2731 (2,14), then signal is inputed to the input port of one-chip computer dsPIC30F (6).One-chip computer dsPIC30F (6) carries out density and cubage automatically, carries out temperature compensation calculating with temperature signal again according to image data, then data are passed to LCD (8) through the output port of one-chip computer dsPIC30F (6), LCD (8) under the control of one-chip computer dsPIC30F (6) successively display medium pressure (Kpa), density (gram/cubic centimetre), content (%), temperature (℃).Simultaneously density and content being sent AD421BN is that DA converter (10) converts 4～20mA standard electric signal to and is sent to central control room (CCR) DCS system.
Claims (3)
1. fluid density content in-line analyzer, it is characterized in that by pressure transducer, prime amplifier, AD converter and single-chip microcomputer are electrically connected, temperature sensor, temperature prime amplifier and single-chip microcomputer are electrically connected, can handle automatically from the pressure signal of sensor input and the temperature signal of temperature sensor input, LCD is electrically connected with single-chip microcomputer, lithium battery is connected with main circuit, when liquid passes through pressure transducer, pressure signal is given AD converter and single-chip microcomputer after the excess pressure prime amplifier amplifies, fluid temperature sensor is given the temperature prime amplifier with temperature signal, after amplifying, give single-chip microcomputer, calculate gathering the pressure signal and the temperature signal of coming in, and with density, content, temperature, the liquor charging crystal display shows.
2. fluid density content in-line analyzer according to claim 1 is characterized in that: LCD is a rectangle.
3. according to the described fluid density content of claims `1 in-line analyzer, it is characterized in that: LCD one screen is display density, content, temperature simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206260989U CN201926903U (en) | 2010-11-15 | 2010-11-15 | Online analyzer for liquid density and content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206260989U CN201926903U (en) | 2010-11-15 | 2010-11-15 | Online analyzer for liquid density and content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926903U true CN201926903U (en) | 2011-08-10 |
Family
ID=44430745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206260989U Expired - Fee Related CN201926903U (en) | 2010-11-15 | 2010-11-15 | Online analyzer for liquid density and content |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926903U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149123A (en) * | 2013-01-30 | 2013-06-12 | 鲁东大学 | Novel storage battery electrolyte density comprehensive measuring instrument |
| CN104089672A (en) * | 2014-07-16 | 2014-10-08 | 深圳市博瑞兰特科技有限公司 | Precision temperature density compensation flowmeter |
| CN104124485A (en) * | 2014-07-08 | 2014-10-29 | 国家电网公司 | Storage battery measurement signal purification device |
| CN109765142A (en) * | 2019-01-24 | 2019-05-17 | 山东杰控电气技术有限公司 | A kind of mobility high concentration slurry density measurement device and method |
-
2010
- 2010-11-15 CN CN2010206260989U patent/CN201926903U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149123A (en) * | 2013-01-30 | 2013-06-12 | 鲁东大学 | Novel storage battery electrolyte density comprehensive measuring instrument |
| CN104124485A (en) * | 2014-07-08 | 2014-10-29 | 国家电网公司 | Storage battery measurement signal purification device |
| CN104089672A (en) * | 2014-07-16 | 2014-10-08 | 深圳市博瑞兰特科技有限公司 | Precision temperature density compensation flowmeter |
| CN109765142A (en) * | 2019-01-24 | 2019-05-17 | 山东杰控电气技术有限公司 | A kind of mobility high concentration slurry density measurement device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20111115 |