CN109470597A - Suspending hammer Weighing type liquid densimeter - Google Patents
Suspending hammer Weighing type liquid densimeter Download PDFInfo
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- CN109470597A CN109470597A CN201811630808.2A CN201811630808A CN109470597A CN 109470597 A CN109470597 A CN 109470597A CN 201811630808 A CN201811630808 A CN 201811630808A CN 109470597 A CN109470597 A CN 109470597A
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- weighing sensor
- weighing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
- G01N9/04—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of fluids
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- General Health & Medical Sciences (AREA)
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- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
Suspending hammer Weighing type liquid densimeter is a kind of simple structure, reliable operation, the liquid densimeter for adapting to all operating conditions and low cost.Structure is: in the fluid to be measured (18) in container (1), it is soaked with measuring head (2), suspension cable (3) lower end is fixedly connected with measuring head (2) upper end, the upper end is fixedly connected with weighing sensor (15) lower end, weighing sensor fixed link (13) lower end is fixedly connected with weighing sensor (15) upper end, weighing sensor fixed link (13) upper end is connect with weighing sensor outer casing upper cover (14), weighing sensor outer casing upper cover (14) is connected to the top of weighing sensor shell (16), and it is connected to above container upper cover (17), temperature sensor is fixedly connected on the side wall of container (1).
Description
Technical field:
It is a kind of low cost and can be with the liquid densimeter of cloud application the present invention relates to a kind of liquid densimeter.
Background technique:
The common density of liquid is blown in respect of float type densimeter, static pressure type densitometer, vibrating densimeter, single tube at present
Formula densitometer, digital display electronic densitometer and radioisotope densimeter.These densitometers there are the problem of it is as follows: float-type is close
Degree meter is to lean on the range estimation of human eye at the scene come what is read, can not be combined with automatic control, it is even more impossible to automatically record, so using
It is limited；Static pressure type densitometer is a kind of weighing type density meter deformed to measure using bellows, and this densitometer not can be carried out
Continuous measurement, can only measure again and again；Vibrating densimeter is the liquid that certain volume is filled in a U-shaped glass tube
Body sample, makes it be stimulated and vibrate, and calculates the density of fluid sample according to the amplitude of its concussion and frequency, but work as liquid
Body viscosity is just unable to measure out accurate density when larger.Single tube air blowing type densitometer is the pressure generation using compressed air
For the pressure for directly measuring fluid column, if compressed air is constantly escaped from tube bottom by gas blow pipe, the pressure of inner air tube at this time
Just equal to the pressure of the sample fluid column of that section of height, pressure value can be converted into density.Although this densitometer realizes continuous survey
Amount, but compressed air must be generated using air compressor machine, it is inconvenient to use.There are two types of structure types for digital display electronic densitometer: hand
Hold formula and desk-top, the use of hand-held and float type densimeter are similar, and read by the range estimation of human eye, only not
It is read with scene, reading can be kept in any occasion observation (because having battery and digital display liquid crystal display).Desk-top digital display
Electronic densitometer is suitble to sampling and measuring, also can not continuously be measured at the scene.The principle of radioisotope densimeter is: benefit
Make radiation source with radioactive isotope, the radioactive ray is different by the object decaying of different densities, certain thickness sample
The density of uptake and the sample to ray is positively correlated, and the signal of ray detector is then related with the uptake, therefore can
To reflect the density of sample.This densitometer use it is least safe, be often subject to irradiation people be easy to obtain leukaemia
A kind of radiation sickness, harm health.
Summary of the invention:
The present invention discloses a kind of suspending hammer Weighing type liquid densimeter, it is therefore an objective to: create a kind of simple structure, reliable operation,
Low cost and can be with the liquid densimeter of cloud application.
The present invention is immersed in fluid to be measured using the measuring head of fixed volume, known constant weight, is measured gravity and is floated
The difference of power measures the density of liquid indirectly by way of electronic scale weighing.It is specifically exactly to use a fixed volume
Cylindricality suspending hammer shape measuring head suspention in a liquid, weighing sensor has been fixedly mounted in top, and the signal of sensor is passed through number
Mould conversion and single-chip microcontroller operation, are shown with display screen.
The present invention claimed is mainly technically characterized by: in container, fluid to be measured being housed, in fluid to be measured, is soaked with survey
Head is tried, suspension cable lower end is fixedly connected with measuring head upper end, and suspension cable upper end is fixedly connected with weighing sensor lower end, weighing sensor
Fixed link lower end is fixedly connected with weighing sensor upper end, and weighing sensor fixed link upper end and weighing sensor outer casing upper cover are solid
Fixed connection, weighing sensor outer casing upper cover are fixedly connected on the top of weighing sensor shell, and weighing sensor shell is fixed to connect
It connects above container upper cover, is fixedly connected with temperature sensor on the side wall of container.
The claimed secondary technical characteristic of the present invention is: weighing sensor passes through weighing sensor connecting cable and master
Monolithic mechatronics in machine, the input terminal that temperature sensor passes through the analog-to-digital conversion module in temperature sensor electric wire and host
Electrical connection, the input interface electrical connection corresponding with single-chip microcontroller of the output end of analog-to-digital conversion module, single-chip microcontroller and digital display screen electricity
Connection, single-chip microcontroller are electrically connected with power module, and power module is electrically connected by power switch with power supply line, and power supply line and power supply are inserted
Head electrical connection.
The beneficial effects of the present invention are:
1., so production is simple, cost is relatively low since any material production can be used in measuring head.
2. complete machine movement-less part, so maintenance workload is small, failure rate is low, high reliablity.
3. being easily achieved the telemetering of fluid density, remote control and cloud application.
4. output is digital signal, convenient for being connect with micro computer, it is easy to accomplish automatically control.
5. the numerical value of display is directly exactly the fluid to be measured density, facilitate the reading of user.
6. can be under any severe occasion (being such as mixed with sewage, deep-etching, flowing, the high temperature, a large amount of offscums of sundries)
It uses.
7. extremely low cost, general densitometer price some reaches thousands of members, and cost of the present invention is only in hundred yuan of grades.
Detailed description of the invention:
It is described with reference to the drawings below.
Fig. 1 is the schematic diagram of the section structure of the invention.
In figure: 1. containers, 2. measuring heads, 3. suspension cables, 4. temperature sensors, 5. temperature sensor electric wires, 6. power switches,
7. power supply line, 8. attaching plugs, 9. cables, 10. digital display screens, 11. hosts, 12. weighing sensor connecting cables, 13.
Weighing sensor fixed link, 14. weighing sensor outer casing upper covers, 15. weighing sensors, 16. weighing sensor shells, 17. hold
Device upper cover, 18. fluids to be measured.
Specific embodiment:
Structural principle of the invention is shown in Fig. 1: in container 1, fluid to be measured 18 being housed, in fluid to be measured 18, is soaked with test
First 2, measuring head 2 is a fixed volume (such as 1dm3, i.e., 1 liter) cylindrical parts, can be solid, be also possible to hollow
, only meet following three principles, any material production that can be used, one is insoluble in fluid to be measured 18, second is that volume is
Fixed volume, third is that its total body density is greater than the density of fluid to be measured 18, if often density when the use hollow body of measuring head 2
Not enough, it can be solved by increasing the method for counterweight inside measuring head 2, stone, sand, iron filings, soil, water can be used in counterweight
Any density such as mud is greater than the material of fluid to be measured 18.Suspension cable 3 is a very thin stainless steel wirerope, lower end and survey
Examination 2 upper end of head is fixedly connected, and the upper end is fixedly connected with 15 lower end of weighing sensor, and weighing sensor 15 is exactly the biography of electronic scale
For sensor plus an analog-digital converter composition, the sensor of electronic scale is generally by elastic element, and is attached to the resistance-strain of top
Piece is electrically connected the Wheatstone bridge composition being connected into, and belongs to mature public technology above, repeats no more.Weighing sensor fixed link 13
It is also metallic rod, lower end is fixedly connected with 15 upper end of weighing sensor, and the upper end and weighing sensor outer casing upper cover 14 are fixed
Connection, weighing sensor outer casing upper cover 14 are the upper covers of weighing sensor shell 16, and weighing sensor shell 16 is by metal or non-
Sheet metal is made, and is fixedly connected on container upper cover 17.
Being mounted in host 11 has printed circuit board, and single-chip microcontroller, power module, modulus are equipped on the printed circuit board and is turned
The electronic components such as block and resistance, capacitor, inductance, transistor, optocoupler are changed the mold, LED digital display screen 10 is installed before host 11,
Lower part is equipped with power switch 6.
Due to expanding with heat and contract with cold for measuring head 2, the volume of measuring head 2 can be changed with temperature, in order to be drawn to expanding with heat and contract with cold
The volume change risen is corrected, due to measuring head 2 be different materials, different-thickness (or even it is solid, that is, use a kind of material system
At without inner cavity solid) and the various different materials coefficients of expansion differ greatly, so correction factor generally will by test come
It determines.In order to measure the temperature of measuring head 2 indirectly, the present invention is provided with temperature sensor 4 on the side wall of container 1, uses
Temperature sensor 4 tests the temperature of fluid to be measured 18, and the temperature of fluid to be measured 18 be immersed in measuring head 2 temperature
It is of substantially equal.NTC element or thermocouple can be used in temperature sensor 4, is fixedly mounted on the outer wall of container 1 that (probe protrudes into appearance
In device 1).
Electrical connection of the invention is that weighing sensor 15 passes through a weighing sensor connecting cable 12 and host 11
Interior single-chip microcontroller (CPU) electrical connection, temperature sensor 4 pass through the analog-to-digital conversion module in temperature sensor electric wire 5 and host 11
Input terminal electrical connection, corresponding with the single-chip microcontroller input interface electrical connection of the output end of analog-to-digital conversion module, single-chip microcontroller with it is digital
Display screen 10 is electrically connected, and single-chip microcontroller is electrically connected with power module, and power module input terminal passes through 7 electricity of power switch 6 and power supply line
Connection, power supply line 7 are electrically connected with attaching plug 8, and one end of cable 9 is electrically connected with host 11, and the other end is electrically connected with router.
The working principle of the invention is: when container 1 is provided with fluid to be measured 18, measuring head 2 is immersed in fluid to be measured 18, is claimed
Retransmit that sensor 15 born be exactly measuring head 2 weight and measuring head 2 suffered by buoyancy difference, weighing sensor 15 held
The weight received reduces due to buoyancy, by the change in resistance of resistance strain gage caused by this weight change, by being mounted on weighing
Analog-digital converter conversion inside sensor 15, becomes digital signal, which passes through weighing sensor connecting cable
12 (be a four core shielding lines, 5 Fu Yigen of power supply, ground connection one, two, twisted pair difference mode signal line, shield external layer is only in master
One point earth at machine, it is anti-interference that both ends are cased with magnetic ferrites magnet ring), it is sent in single-chip microcontroller, single-chip microcontroller controls digital display screen 10
Display number, since measuring head 2 and weighing sensor 15 and single-chip microcontroller are mating and pass through debugging calibration, when not immersing liquid
Adjustment is zero, after measuring head 2 immerses fluid to be measured 18, shown by digital display screen 10 by kilogram as unit of number, just
It is the density of fluid to be measured 18.(number should be negative value, but just show before the programming program and display screen of single-chip microcontroller without negative sign
At positive value).
The present invention does not have to calibrate using preceding: as long as attaching plug 8 is connected alternating current, turning on the power switch 6, will test
First 2 immerse in fluid to be measured 18, the density of shown number, that is, fluid to be measured 18 on digital display screen 10.
The present invention can also be fabricated to movable type, and method is: will be on weighing sensor fixed link 13, weighing sensor shell
Lid 14, weighing sensor 15, these parts of weighing sensor shell 16 are separated with container upper cover 17, are made individual one always
At, and the following pipe of weighing sensor shell 16 is extended and is made antipriming pipe, the internal diameter of the antipriming pipe is than measuring head 2
More greatly, so that measuring head 2 can be move freely in antipriming pipe, temperature sensor 4 also not be mounted on the side of container 1 to outer diameter
It on wall, and is mounted on antipriming pipe outer wall, the analog signal of temperature change is transmitted still through temperature sensor electric wire 5
To the analog-to-digital conversion module in host 11, it is made into movable type, easy to carry to consider the problems of first, one highly necessary accomplishes light weight
Change, 2 volume of measuring head can narrow down to 5cm3, antipriming pipe overall diameter 20mm is also just much of that, it can also further reduce the cost in this way,
It should be noted that in addition the program of single-chip microcontroller will write.
The present invention will also increase by one piece of new main control board, one piece of standard time clock to realize cloud application in host 11
Plate, one or two antennas, one block of cable connect expelling plate, and the cable 9 of an internet (has cable cable, without cable
With wirelessly) and one block of storage circuit plate.CPU is also installed on new main control board, but the function of the CPU is the number that will be transmitted
According to timing to internet push, standard time clock plate is the standard time clock synchronous with internet, carry crystal oscillator clock and periodically with it is mutual
The calibration of networking standard moment, is provided standard time (the date Hour Minute Second synchronous with Beijing time), on new main control board
CPU is exactly according to the work of standard time provided by it, and antenna is that bluetooth, WiFi, WLAN or other wireless networks are used, net
Line connection expelling plate is electrically connected with new main control board, antenna, cable 9, and effect is to send the CPU on new main control board
Signal is pushed to internet, and storage circuit is one piece of EP2ROM integrated package, effect be when internet signal is bad or suspension,
Data are temporarily existed in integrated package, waits network recoveries to push and is successfully periodically automatically deleted again.
CPU on new main control board is that the data timing that will be transmitted is pushed into certain big website cloud storage of internet,
If measured fluid density changes, push is primary per minute, if measured fluid density is unchanged, per small
When push it is primary, unchanged also to push primary purpose per hour and be: the user of distal end can detect the work of the equipment accordingly
Whether work.No matter in use, user where, as long as internet can be connected, so that it may input password login cloud storage and inquire certain
The fluid density situation of one any time.
Claims (2)
1. suspending hammer Weighing type liquid densimeter, including container (1), measuring head (2), suspension cable (3), temperature sensor (4), temperature pass
Sensor electric wire (5), power switch (6), power supply line (7), attaching plug (8), the Internet line (9), digital display screen (10), host
(11), weighing sensor connecting cable (12), weighing sensor fixed link (13), weighing sensor outer casing upper cover (14) claim
It retransmits sensor (15), weighing sensor shell (16), container upper cover (17), which is characterized in that in container (1), test solution is housed
Body (18) in fluid to be measured (18), is soaked with measuring head (2), suspension cable (3) lower end is fixedly connected with measuring head (2) upper end, suspension cable
(3) upper end is fixedly connected with weighing sensor (15) lower end, weighing sensor fixed link (13) lower end and weighing sensor (15)
Upper end is fixedly connected, and weighing sensor fixed link (13) upper end is fixedly connected with weighing sensor outer casing upper cover (14), and weighing passes
Sensor outer casing upper cover (14) is fixedly connected on the top of weighing sensor shell (16), and weighing sensor shell (16) is fixed to connect
It connects above container upper cover (17), is fixedly connected with temperature sensor (4) on the side wall of container (1).
2. suspending hammer Weighing type liquid densimeter according to claim 1, which is characterized in that weighing sensor (15) passes through title
The monolithic mechatronics in sensor connecting cable (12) and host (11) are retransmitted, temperature sensor (4) passes through temperature sensor
Electric wire (5) is electrically connected with the input terminal of the analog-to-digital conversion module in host (11), the output end and single-chip microcontroller of analog-to-digital conversion module
Corresponding input interface electrical connection, single-chip microcontroller are electrically connected with digital display screen (10), and single-chip microcontroller is electrically connected with power module, power supply
Module is electrically connected by power switch (6) with power supply line (7), and power supply line (7) is electrically connected with attaching plug (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630808.2A CN109470597A (en) | 2018-12-19 | 2018-12-19 | Suspending hammer Weighing type liquid densimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811630808.2A CN109470597A (en) | 2018-12-19 | 2018-12-19 | Suspending hammer Weighing type liquid densimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109470597A true CN109470597A (en) | 2019-03-15 |
Family
ID=65676961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811630808.2A Pending CN109470597A (en) | 2018-12-19 | 2018-12-19 | Suspending hammer Weighing type liquid densimeter |
Country Status (1)
| Country | Link |
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| CN (1) | CN109470597A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1073525A (en) * | 1996-08-30 | 1998-03-17 | Shimadzu Corp | Measuring apparatus for specific gravity |
| CN201034904Y (en) * | 2007-04-04 | 2008-03-12 | 昆明理工大学 | Binary alloy intelligent detector |
| CN201222027Y (en) * | 2008-07-16 | 2009-04-15 | 温武才 | On-line automatic detection apparatus for liquid concentration |
| CN202141659U (en) * | 2011-07-07 | 2012-02-08 | 北京华创瑞风空调科技有限公司 | Instrument for measuring liquid concentration |
| CN206074389U (en) * | 2016-10-08 | 2017-04-05 | 连云港博越装备科技有限公司 | A kind of buoyancy type liquid density measuring equipment |
| CN206095345U (en) * | 2016-09-22 | 2017-04-12 | 山东聊城三阳环保产业有限公司 | Suspending hammer weighing type level gauge |
| CN107300512A (en) * | 2017-08-15 | 2017-10-27 | 周滨 | Intelligent densitometer |
| CN108872010A (en) * | 2018-09-05 | 2018-11-23 | 泉州市全通光电科技有限公司 | A kind of automatic weighing formula digital display fluid density counter device and its Density Detection method |
-
2018
- 2018-12-19 CN CN201811630808.2A patent/CN109470597A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1073525A (en) * | 1996-08-30 | 1998-03-17 | Shimadzu Corp | Measuring apparatus for specific gravity |
| CN201034904Y (en) * | 2007-04-04 | 2008-03-12 | 昆明理工大学 | Binary alloy intelligent detector |
| CN201222027Y (en) * | 2008-07-16 | 2009-04-15 | 温武才 | On-line automatic detection apparatus for liquid concentration |
| CN202141659U (en) * | 2011-07-07 | 2012-02-08 | 北京华创瑞风空调科技有限公司 | Instrument for measuring liquid concentration |
| CN206095345U (en) * | 2016-09-22 | 2017-04-12 | 山东聊城三阳环保产业有限公司 | Suspending hammer weighing type level gauge |
| CN206074389U (en) * | 2016-10-08 | 2017-04-05 | 连云港博越装备科技有限公司 | A kind of buoyancy type liquid density measuring equipment |
| CN107300512A (en) * | 2017-08-15 | 2017-10-27 | 周滨 | Intelligent densitometer |
| CN108872010A (en) * | 2018-09-05 | 2018-11-23 | 泉州市全通光电科技有限公司 | A kind of automatic weighing formula digital display fluid density counter device and its Density Detection method |
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Application publication date: 20190315 |