CN108254052A - Improve the weighing system and weighing method of fluid weighing accuracy and speed - Google Patents
Improve the weighing system and weighing method of fluid weighing accuracy and speed Download PDFInfo
- Publication number
- CN108254052A CN108254052A CN201810102595.XA CN201810102595A CN108254052A CN 108254052 A CN108254052 A CN 108254052A CN 201810102595 A CN201810102595 A CN 201810102595A CN 108254052 A CN108254052 A CN 108254052A
- Authority
- CN
- China
- Prior art keywords
- weighing
- viscosity fluid
- speed
- fluid
- pump
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Improve the weighing system and weighing method of fluid weighing accuracy and speed.Using double speed valve carry out high-viscosity fluid weigh there are weighing precision it is low and lag it is serious the problems such as.Therefore, the prior art cannot carry out accurate dynamic weighing to high-viscosity fluid.A kind of weighing system and weighing method for improving fluid weighing accuracy and speed, composition include：High-viscosity fluid charging basket（1）, scale body（2）With weight display instrument（3）, the output terminal of scale body is connected with weight display instrument, and the output terminal of scale body is also connected with weighing controller（4）, the output control terminal and frequency converter of weighing controller（5）Input terminal be connected, the output terminal of frequency converter and high-viscosity fluid barrel pump（6）It is connected, high-viscosity fluid pump is put into scale body by high-viscosity fluid barrel pump by the pump rod being inserted into high-viscosity fluid charging basket.The present invention is applied to improve the weighing system and weighing method of fluid weighing accuracy and speed.
Description
Technical field：
The present invention relates to a kind of weighing systems and weighing method for improving fluid weighing accuracy and speed.
Background technology：
In industrial processes, it is often necessary to carry out dynamic weighing to fluid material.Low viscosity fluid uses flowmeter or tooth
Wheel pump can realize accurate dynamic measuring, still, cannot be up to 10000cps's to viscosity using flowmeter or gear pump
Fluid carries out accurate dynamic measuring.Although using double speed valve dynamic measuring can be carried out to high-viscosity fluid, it uses
Double speed valve carry out high-viscosity fluid weigh there are weighing precision it is low and lag it is serious the problems such as.Therefore, the prior art cannot be right
High-viscosity fluid carries out accurate dynamic weighing.
Invention content：
The object of the present invention is to provide a kind of weighing systems and weighing method for improving fluid weighing accuracy and speed.
Above-mentioned purpose is realized by following technical scheme：
A kind of weighing system for improving fluid weighing accuracy and speed, composition include：High-viscosity fluid charging basket, scale body and weight
Display instrument, the output terminal of the scale body are connected with the weight display instrument, and the output terminal of the scale body is also connected with claiming
Weight controller, the output control terminal of the weighing controller is connected with the input terminal of frequency converter, the frequency converter it is defeated
Outlet is connected with high-viscosity fluid barrel pump, and the high-viscosity fluid barrel pump is by being inserted into the high-viscosity fluid charging basket
In pump rod described high-viscosity fluid pump is put into the scale body.
The weighing system of the raising fluid weighing accuracy and speed, the output terminal of the scale body and the weight
Display instrument and weighing controller are connected by PROFIBUS-DP bus modes.
The weighing system of described raising fluid weighing accuracy and speed, the weighing controller be additionally provided with port with
Upper control machine is connected.
The weighing system of the raising fluid weighing accuracy and speed, the weighing controller is by programmable controller
It forms.
The weighing system of the raising fluid weighing accuracy and speed, weight controller are poor using dynamic according to control parameter
Value penalty method and the pump speed for passing through Frequency Converter Control high-viscosity fluid barrel pump, the control parameter include the original of high-viscosity fluid
Expect weight, the liquid level in high-viscosity fluid charging basket, high-viscosity fluid barrel pump pump speed.
The weighing system of the raising fluid weighing accuracy and speed, the control parameter is by the control of weighing
Device setting processed is set by the upper control machine.
A kind of weighing method for improving fluid weighing accuracy and speed：This method comprises the following steps：
（1）Weighing controller determines the original frequency of frequency converter and passes through frequency converter control according to the raw material weight of high-viscosity fluid
The pump speed of high-viscosity fluid barrel pump processed is pumped into high-viscosity fluid from high-viscosity fluid charging basket into scale body；
（2）Weighing-up wave is fed back to weighing controller by scale body, and weighing controller is compensated according to control parameter using dynamic difference
Method and the pump speed for passing through Frequency Converter Control high-viscosity fluid barrel pump；
（3）When weighing controller detects weight signal close to desired value, using measure minimum discharge method and pass through frequency converter
Reduce the pump speed of high-viscosity fluid barrel pump so that high-viscosity fluid pumping speed slows down until being in interrupted titration state, using this
Kind method overcomes the influence of impact force and reserved quality of material to precision, ensure that the precision weighed.
Beneficial effects of the present invention：
1. dynamic weighing system of the present invention forms a closed loop system by weighing controller, frequency converter, high-viscosity fluid barrel pump and scale body
Weighing-up wave can be fed back to weighing controller in time by system, scale body, and weighing controller is compensated and measured using dynamic difference
Minimum discharge dynamic algorithm and the pump speed for passing through Frequency Converter Control high viscosity barrel pump realize accurate to the dynamic of high-viscosity fluid
Function of weighing ensure that weighing precision and speed of weighing, meet the requirement being precisely weighed to the dynamic of high-viscosity fluid.
The present invention can set the raw material weight of high-viscosity fluid and its various by weighing controller or upper control machine
Control parameter is adapted to the dynamic weighing of various different high-viscosity fluids, has the characteristics that easy to use, applied widely.
The present invention corrects surplus material weight using dynamic interpolation compensation method in real time, is examined in weighing controller
When measuring weight signal close to desired value, the pump of high-viscosity fluid barrel pump is reduced using measure minimum discharge method and by frequency converter
Speed makes it slow down until being in interrupted titration state, overcomes the influence of impact force and reserved quality of material to precision, ensure that title
The precision of weight.
Reasonable design of the present invention realizes and is precisely weighed function to the dynamic of high-viscosity fluid, ensure that weighing precision and
It weighs speed, meets the requirement being precisely weighed to the dynamic of high-viscosity fluid, while have easy to use, applied widely
The characteristics of.
Description of the drawings：
Attached drawing 1 is the structure diagram of the present invention.
In figure：1st, high-viscosity fluid charging basket, 2, scale body, 3, weight display instrument, 4, weighing controller, 5, frequency converter, 6, high
Viscous fluid barrel pump, 7, upper control machine.
Specific embodiment：
Embodiment 1：
A kind of weighing system for improving fluid weighing accuracy and speed, composition include：High-viscosity fluid charging basket 1, scale body 2 and again
Display instrument 3 is measured, the output terminal of the scale body is connected with the weight display instrument, and the output terminal of the scale body is also connected with
Weighing controller 4, the output control terminal of the weighing controller are connected with the input terminal of frequency converter 5, the frequency converter
Output terminal be connected with high-viscosity fluid barrel pump 6, the high-viscosity fluid barrel pump is by being inserted into the high viscosity stream
The high-viscosity fluid pump is put into the scale body by the pump rod in body charging basket.
Embodiment 2：
According to the weighing system described in embodiment 1 for improving fluid weighing accuracy and speed, the output terminal of the scale body and institute
The weight display instrument and weighing controller stated are connected by PROFIBUS-DP bus modes.
Embodiment 3：
The weighing system of raising fluid weighing accuracy and speed according to embodiment 1 or 2, the weighing controller are also set
There is port to be connected with upper control machine 7.
Embodiment 4：
The weighing system of raising fluid weighing accuracy and speed according to embodiment 1 or 2 or 3, the weighing controller
It is made of programmable controller.
Embodiment 5：
The weighing system of raising fluid weighing accuracy and speed according to embodiment 1 or 2 or 3 or 4, the control parameter
Raw material weight including high-viscosity fluid, the liquid level in high-viscosity fluid charging basket, high-viscosity fluid barrel pump pump speed.
Embodiment 6：
The weighing system of raising fluid weighing accuracy and speed according to embodiment 1 or 2 or 3 or 4 or 5, the control
Parameter is set by the weighing controller setting or by the upper control machine.
Embodiment 7：
The weighing method of raising fluid weighing accuracy and speed described in one kind one of 1-6：This method comprises the following steps：
（1）Weighing controller determines the original frequency of frequency converter and passes through frequency converter control according to the raw material weight of high-viscosity fluid
The pump speed of high-viscosity fluid barrel pump processed is pumped into high-viscosity fluid from high-viscosity fluid charging basket into scale body；
（2）Weighing-up wave is fed back to weighing controller by scale body, and weighing controller is compensated according to control parameter using dynamic difference
Method and the pump speed for passing through Frequency Converter Control high-viscosity fluid barrel pump；
（3）When weighing controller detects weight signal close to desired value, using measure minimum discharge method and pass through frequency converter
Reduce the pump speed of high-viscosity fluid barrel pump.
Upper control machine is connected with the communication interface of weighing controller, realizes control of the upper control machine to weighing controller
Function processed.Weighing controller is made of programmable controller, and dynamic weighing control program, upper control are built-in in weighing controller
Machine and weighing controller processed are equipped with man-machine interface, and the original of high-viscosity fluid can be set by upper control machine and weighing controller
Expect weight and its various control parameters.The output control terminal of the weighing controller is connected with the input terminal of frequency converter, the frequency conversion
The output terminal of device is connected with high-viscosity fluid barrel pump, by the pump speed of the Frequency Converter Control high-viscosity fluid barrel pump；The high viscosity
Fluid barrel pump is inserted by pump rod in high-viscosity fluid charging basket, by high-viscosity fluid barrel pump by high-viscosity fluid from high viscosity stream
Body charging basket is pumped into scale body.It realizes the pumping process by high-viscosity fluid from high-viscosity fluid charging basket to scale body and controls high viscosity stream
The flow velocity of body.
Scale body is capable of providing higher weighing precision using high-precision scale body, and the output terminal of the scale body passes through PROFIBUS-
For DP bus modes simultaneously with weight display instrument and weighing controller, the weight signal that scale body exports passes through PROFIBUS-DP buses
Weight display instrument is sent to carry out real-time display and feed back to weighing controller, calculated by weighing controller dynamic weigh difference and
Then fluid flow rate adjusts the pump speed of high-viscosity fluid barrel pump by controlling frequency converter, realizes and high-viscosity fluid is moved
State is precisely weighed function.
Claims (7)
1. a kind of weighing system for improving fluid weighing accuracy and speed, composition include：High-viscosity fluid charging basket, scale body and
Weight display instrument, it is characterized in that：The output terminal of the scale body is connected with the weight display instrument, the scale body it is defeated
Outlet is also connected with weighing controller, and the output control terminal of the weighing controller is connected with the input terminal of frequency converter, described
The output terminal of frequency converter be connected with high-viscosity fluid barrel pump, the high-viscosity fluid barrel pump is by being inserted into the height
The high-viscosity fluid pump is put into the scale body by the pump rod in viscous fluid charging basket.
2. the weighing system according to claim 1 for improving fluid weighing accuracy and speed, it is characterized in that：The scale body
Output terminal be connected with the weight display instrument and weighing controller by PROFIBUS-DP bus modes.
3. the weighing system according to claim 1 or 2 for improving fluid weighing accuracy and speed, it is characterized in that：Described
Weighing controller is additionally provided with port and is connected with upper control machine.
4. the weighing system of the raising fluid weighing accuracy and speed according to claims 1 or 2 or 3, it is characterized in that：It is described
Weighing controller be made of programmable controller.
5. the systems of weighing of the raising fluid weighing accuracy and speed according to claims 1 or 2 or 3 or 4, feature
It is：Weight controller uses dynamic difference penalty method according to control parameter and passes through the pump of Frequency Converter Control high-viscosity fluid barrel pump
Speed, the control parameter include raw material weight, the liquid level in high-viscosity fluid charging basket, the high-viscosity fluid bucket of high-viscosity fluid
The pump speed of pump.
6. the weighing system of the raising fluid weighing accuracy and speed according to claims 1 or 2 or 3 or 4 or 5, feature
It is：The control parameter is set by the weighing controller setting or by the upper control machine.
7. the weighing method of the raising fluid weighing accuracy and speed described in a kind of one of claim 1-6：This method is included such as
Lower step：It is characterized in that：
（1）Weighing controller determines the original frequency of frequency converter and passes through frequency converter control according to the raw material weight of high-viscosity fluid
The pump speed of high-viscosity fluid barrel pump processed is pumped into high-viscosity fluid from high-viscosity fluid charging basket into scale body；
（2）Weighing-up wave is fed back to weighing controller by scale body, and weighing controller is compensated according to control parameter using dynamic difference
Method and the pump speed for passing through Frequency Converter Control high-viscosity fluid barrel pump；
（3）When weighing controller detects weight signal close to desired value, using measure minimum discharge method and pass through frequency converter
Reduce the pump speed of high-viscosity fluid barrel pump so that high-viscosity fluid pumping speed slows down until being in interrupted titration state, using this
Kind method overcomes the influence of impact force and reserved quality of material to precision, ensure that the precision weighed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102595.XA CN108254052A (en) | 2018-02-01 | 2018-02-01 | Improve the weighing system and weighing method of fluid weighing accuracy and speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810102595.XA CN108254052A (en) | 2018-02-01 | 2018-02-01 | Improve the weighing system and weighing method of fluid weighing accuracy and speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108254052A true CN108254052A (en) | 2018-07-06 |
Family
ID=62742556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810102595.XA Pending CN108254052A (en) | 2018-02-01 | 2018-02-01 | Improve the weighing system and weighing method of fluid weighing accuracy and speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108254052A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1260435A1 (en) * | 1997-02-21 | 2002-11-27 | The Geon Company | System and apparatus for dispensing high viscosity pigments |
| CN101799312A (en) * | 2010-03-10 | 2010-08-11 | 天津科技大学 | Dynamic weighing system of high-viscosity fluid and method thereof |
| CN103630220A (en) * | 2013-11-10 | 2014-03-12 | 西安航天化学动力厂 | Device for weighing liquid with viscosity being 4mPa.S |
| CN104634434A (en) * | 2013-11-10 | 2015-05-20 | 西安航天化学动力厂 | Collecting device used during charging of high-viscosity liquid |
-
2018
- 2018-02-01 CN CN201810102595.XA patent/CN108254052A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1260435A1 (en) * | 1997-02-21 | 2002-11-27 | The Geon Company | System and apparatus for dispensing high viscosity pigments |
| CN101799312A (en) * | 2010-03-10 | 2010-08-11 | 天津科技大学 | Dynamic weighing system of high-viscosity fluid and method thereof |
| CN103630220A (en) * | 2013-11-10 | 2014-03-12 | 西安航天化学动力厂 | Device for weighing liquid with viscosity being 4mPa.S |
| CN104634434A (en) * | 2013-11-10 | 2015-05-20 | 西安航天化学动力厂 | Collecting device used during charging of high-viscosity liquid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7429699B2 (en) | Calibration method for liquid flow meters | |
| CN203187386U (en) | Silica sol liquid filling accurate metering device | |
| CN205517595U (en) | Automatic change weighting control system | |
| CN108167169A (en) | A kind of metering pump control system for accurately controlling flow | |
| CN205352528U (en) | Heavy control system of batch weigher through traffic monitoring | |
| CN108319214A (en) | A kind of control method of Weightlessness balance, apparatus and system | |
| CN108254052A (en) | Improve the weighing system and weighing method of fluid weighing accuracy and speed | |
| CN101799312A (en) | Dynamic weighing system of high-viscosity fluid and method thereof | |
| CN100371840C (en) | On-line weighing dispensing method based on feed speed control | |
| CN204788617U (en) | Automatic blending system based on PLC | |
| CN212293707U (en) | Titanium tetrachloride high-precision continuous weighing automatic feeding system for titanium sponge production | |
| CN206579010U (en) | One kind is used for the on-line automatic regulating system of silicone adhesive quantity-produced flow | |
| CN202281643U (en) | Fluid weighting device | |
| CN107324638B (en) | Automatic liquid level control device and method for glass fiber kiln | |
| CN203381799U (en) | Powder weight sensing segmented-filling system | |
| CN205562000U (en) | Intermittent type formula decrement balance | |
| CN106696111A (en) | Flow online automatic regulating system and method for silicone adhesive continuous production | |
| CN104503357A (en) | High-precision automatic batching control system and control method thereof | |
| CN211373814U (en) | Precision detection device and humectant preparation system | |
| CN109203248A (en) | A kind of starch wet process add-on system | |
| CN218659853U (en) | Powder metering system for online calibration of stabilized soil plant mixing equipment | |
| CN217782225U (en) | Stabilized soil mixing station constant pressure water supply device | |
| CN208575709U (en) | A kind of liquid grinding aid quantifies add-on system | |
| JPH02191193A (en) | Method and apparatus for constant liquid filling | |
| CN111270090A (en) | High-precision liquid continuous weighing automatic feeding system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180706 |
|
| RJ01 | Rejection of invention patent application after publication |