CN108760576A - A kind of pipeline hazardous waste rheological behavior test system and detection method - Google Patents
A kind of pipeline hazardous waste rheological behavior test system and detection method Download PDFInfo
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- CN108760576A CN108760576A CN201810540572.7A CN201810540572A CN108760576A CN 108760576 A CN108760576 A CN 108760576A CN 201810540572 A CN201810540572 A CN 201810540572A CN 108760576 A CN108760576 A CN 108760576A
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- pressure
- pressure sensor
- solid pump
- displacement
- hazardous waste
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N2011/0026—Investigating specific flow properties of non-Newtonian fluids
Abstract
The present invention relates to hazardous waste rheological behavior technical field of measurement and test, more particularly to a kind of pipeline hazardous waste rheological behavior test system and detection method.It includes solid pump, rotary kiln and the conveyance conduit for being connected to the solid pump, the rotary kiln；The conveyance conduit is equipped with multiple first pressure sensors, and multiple first pressure sensors are along the conveyance conduit length direction arranged for interval；The solid pump discharge is equipped with second pressure sensor, and displacement sensor is equipped in the master cylinder of the solid pump；The first pressure sensor, the second pressure sensor, institute's displacement sensors are connect with controller.The present invention goes out the shear rate at the conveying pipeline inner wall with the multiple first pressure sensors being calculatedFor abscissa, with shearing force τwFor ordinate, opening relationships curve, to judge the rheology type of fluid；By selecting rheological equation appropriate, rheological parameter is determined, providing data with optimization pumping for material proportion supports.
Description
Technical field
The present invention relates to hazardous waste rheological behavior technical field of measurement and test, more particularly to a kind of pipeline hazardous waste stream
Become characteristic test system and detection method.
Background technology
Hazardous waste is with one or more kinds of danger such as corrosivity, acute toxicity, reactivity, infectiousness, radioactivity
The waste of evil characteristic.Mainly comprising solid bottoms, waste liquid, vinasse etc..Burning method is because it is when handling hazardous waste
Minimizing, innoxious and recycling can be realized simultaneously, it is considered to be the method for most effective processing hazardous waste and China
The method that danger wastes centralized processing center mainly uses.
The collection vessel of hazardous waste is metal bucket, plastic barrel, woven bag etc., and burning method is needed hazardous waste together with collection
Container is crushed, mixes together, is pumped into rotary kiln and is burnt using solid pump, since solid pump has 200- to rotary kiln
500 meters or so distances, while material variety complexity is conveyed, belong to non-newtonian fluid, therefore, research pipeline hazardous waste
Rheological behavior has very big effect to material proportion and optimization pumping.
Invention content
The purpose of the present invention is to provide a kind of pipeline hazardous waste rheological behaviors to test system, is used for detection in real time
The rheological behavior of pipeline hazardous waste；
Another object of the present invention is to provide the detection sides that a kind of pipeline hazardous waste rheological behavior tests system
Method, for calculating the rheological parameter of pipeline hazardous waste.
The purpose of the present invention is what is realized by following technical proposals：
A kind of pipeline hazardous waste rheological behavior tests system comprising solid pump, rotary kiln be connected to it is described solid
The conveyance conduit of body pump, the rotary kiln；The conveyance conduit is equipped with multiple first pressure sensors, multiple first pressures
Force snesor is along the conveyance conduit length direction arranged for interval；The solid pump discharge is equipped with second pressure sensor, described
Displacement sensor is equipped in the master cylinder of solid pump；The first pressure sensor, the second pressure sensor, the displacement
Sensor is connect with controller；
The first pressure sensor is for detecting discharge pressure in the conveyance conduit；
The second pressure sensor is for detecting the solid pump discharge pressure；
Institute's displacement sensors are used to detect the piston displacement of the solid pump；
The controller, the number for reading, showing and storing the first pressure sensor, institute's displacement sensors
According to.
Further, the first pressure sensor and the second pressure sensor are outer including pressure probe, encapsulation
Shell, circuit board and liquid crystal display；The pressure probe is mounted on the package casing upper end, and the liquid crystal display is mounted on
The package casing lower end, the circuit board are mounted in the package casing；The pressure probe, the liquid crystal display are equal
It is connect with the circuit board；The pressure probe includes pressure sensor piece and mounting base, and the pressure sensor piece is mounted on described
Mounting base upper end；The pressure sensor piece is made of thickness of the stainless steel plate of 4~6mm.
Further, the circuit board is equipped with RS-485 interfaces.
Further, the first pressure sensor, the second pressure sensor, institute's displacement sensors with it is described
Controller is connected by RS-485 buses.
Further, further include third pressure sensor, the third pressure sensor is connect with the controller, described
Third pressure sensor is mounted in the master cylinder of the solid pump, the master cylinder pressure for detecting the solid pump.
Further, institute's displacement sensors are BALLUFF micropulse linear displacement transducers.
Further, the controller is S7-200 controllers.
A kind of detection method for testing system according to above-described pipeline hazardous waste rheological behavior, feature exist
In：
The first step, multiple first pressure sensors detect the discharge pressure of multiple spot on the conveyance conduit, institute in real time
The outlet pressure that second pressure sensor detects the solid pump in real time is stated, institute's displacement sensors detect the solid pump in real time
Piston displacement, and pass data to the controller；
Second step, the controller read, store and show the first pressure sensor, second pressure sensing
The data of device, institute's displacement sensors；
Third walks, and is calculated at i-th of first pressure sensor at the conveying pipeline inner wall by following equation
Shearing force τw,
Wherein：D represents the conveyance conduit internal diameter, mm；
LiEffective delivered length between i-th of first pressure sensor and the second pressure sensor is represented,
mm；
P0Represent the solid pump discharge pressure that the second pressure sensor detects, KPa；
PiRepresent discharge pressure in the conveyance conduit that i-th of first pressure sensor detects, KPa；
Similarly calculate the shearing force τ at the conveying pipeline inner wall at multiple first pressure sensorsw；
4th step, using the outlet pressure data of same time as abscissa, piston displacement data are established as ordinate
Relationship coordinate diagram between outlet pressure and piston position；Coordinate diagram shows that, with the increase of piston displacement, outlet pressure is first
Into rapid increase stage, subsequently into plateau, the solid pump, which is in, at this time stablizes pumping stages, sets outlet pressure
The starting point piston displacement value of plateau is a, and the terminal piston displacement value of outlet pressure plateau is b, then utilizes following public affairs
Formula calculates the average rate of pumping V of the solid pump
Wherein：T represents the solid pump and stablizes pumping stages duration, s；
Then according to fluid at the conveying pipeline inner wall at following equation i-th of first pressure sensor of calculating
Shear rate
Similarly calculate the shear rate of fluid at the conveying pipeline inner wall at multiple first pressure sensors
Then 5th step makes the shear rate gone out with multiple first pressure sensors at the conveying pipeline inner wallFor abscissa, with shearing force τwFor the relation curve of ordinate, the i.e. rheological curve of fluid, to judge the rheology class of fluid
Type；By selecting rheological equation appropriate, experimental data is fitted, determines rheological parameter.
Further, the third pressure sensor detects the master cylinder pressure of solid pump in real time, and passes data to
The controller；The controller reading, the data for storing and showing the third pressure sensor.
Further, the master cylinder pressure p detected according to the third pressure sensor is calculated solid using following equation
The outlet pressure p of body pumpt,
Wherein：D1For main cylinder diameter, mm；
D2For solid pump outlet diameter, mm；
pfFor master cylinder null when master cylinder pressure, KPa；
The outlet for the solid pump that the outlet pressure for the solid pump that comparison is extrapolated is detected with the second pressure sensor
Pressure judges whether the outlet pressure for the solid pump that the second pressure sensor detects is accurate.
The present invention has the following advantages that compared with prior art：
1. pipeline hazardous waste rheological behavior of the present invention tests system comprising solid pump, rotary kiln and company
The conveyance conduit of the logical solid pump, the rotary kiln；The conveyance conduit is equipped with multiple first pressure sensors, Duo Gesuo
First pressure sensor is stated along the conveyance conduit length direction arranged for interval；The solid pump discharge is sensed equipped with second pressure
Device, the master cylinder of the solid pump is interior to be equipped with displacement sensor；The first pressure sensor, the second pressure sensor,
Institute's displacement sensors are connect with controller；The first pressure sensor is for detecting delivery pressure in the conveyance conduit
Power；The second pressure sensor is for detecting the solid pump discharge pressure；Institute's displacement sensors are described solid for detecting
The piston displacement of body pump；The controller, for reading, showing and storing the first pressure sensor, the displacement sensing
The data of device；It is fast that the shearing that multiple first pressure sensors go out at the conveying pipeline inner wall can be calculated in the present invention
RateWith shearing force τw, then make the shear rate gone out with multiple first pressure sensors at the conveying pipeline inner wallFor abscissa, with shearing force τwFor the relation curve of ordinate, the i.e. rheological curve of fluid, to judge the rheology class of fluid
Type；By selecting rheological equation appropriate, experimental data is fitted, determines rheological parameter, is that material proportion is pumped with optimization
It send and data support is provided.
2. the pressure probe of pressure sensor of the present invention includes pressure sensor piece and mounting base, the pressure
Sensing chip is mounted on the mounting base upper end；The pressure sensor piece is made of thickness of the stainless steel plate of 4~6mm；Stainless steel
The pressure sensor piece made of plate, hard, sound construction are not easy to be punctured by hard materials such as iron plates, and stainless steel material
Acid-fast alkali-proof has corrosion resistant performance, is suitable for detecting the pressure of hazardous waste material.
Description of the drawings
Fig. 1 is that pipeline hazardous waste rheological behavior of the present invention tests system electrical connection figure；
Fig. 2 is pressure sensor structure figure of the present invention；
In figure：1- pressure probes, 101- pressure sensor pieces, 102- mounting bases, 2- package casings, 3- liquid crystal displays.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Referring to Fig. 1, a kind of pipeline hazardous waste rheological behavior test system comprising solid pump, rotary kiln and company
The conveyance conduit of the logical solid pump, the rotary kiln；The conveyance conduit is equipped with multiple first pressure sensors, Duo Gesuo
First pressure sensor is stated along the conveyance conduit length direction arranged for interval；The solid pump discharge is sensed equipped with second pressure
Device, the master cylinder of the solid pump is interior to be equipped with displacement sensor；The first pressure sensor, the second pressure sensor,
Institute's displacement sensors are connect with controller；Institute's displacement sensors are BALLUFF micropulse linear displacement transducers；It is described
Controller is S7-200 controllers；The first pressure sensor is for detecting discharge pressure in the conveyance conduit；Described
Two pressure sensors are for detecting the solid pump discharge pressure；Institute's displacement sensors are used to detect the piston of the solid pump
Displacement；The controller, the data for reading, showing and storing the first pressure sensor, institute's displacement sensors；Profit
With above-described pipeline hazardous waste rheological behavior test system detecting step be：
The first step, multiple first pressure sensors detect the discharge pressure of multiple spot on the conveyance conduit, institute in real time
The outlet pressure that second pressure sensor detects the solid pump in real time is stated, institute's displacement sensors detect the solid pump in real time
Piston displacement, and pass data to the controller；
Second step, the controller read, store and show the first pressure sensor, second pressure sensing
The data of device, institute's displacement sensors；
Third walks, and passes through formula(wherein：D represents the conveyance conduit internal diameter, LiRepresent i-th of institute
State effective delivered length between first pressure sensor and the second pressure sensor, P0Represent the second pressure sensing
The solid pump discharge pressure that device detects, PiRepresent the delivery pipe that i-th of first pressure sensor detects
Discharge pressure in road) calculate the shearing force τ at the conveying pipeline inner wall at i-th of first pressure sensorw, similarly count
Calculate the shearing force τ at the conveying pipeline inner wall at multiple first pressure sensorsw；
4th step, using the outlet pressure data of same time as abscissa, piston displacement data are established as ordinate
Relationship coordinate diagram between outlet pressure and piston position；Coordinate diagram shows that, with the increase of piston displacement, outlet pressure is first
Into rapid increase stage, subsequently into plateau, the solid pump, which is in, at this time stablizes pumping stages, sets outlet pressure
The starting point piston displacement value of plateau is a, and the terminal piston displacement value of outlet pressure plateau is b, then the solid pump
Average rate of pumping be：(wherein t represents the solid pump and stablizes the pumping stages duration)；Then according to public affairs
FormulaWithCalculate the conveying at i-th of first pressure sensor
The shear rate of fluid at inner wall of the pipeSimilarly calculate the conveying pipeline inner wall at multiple first pressure sensors
Locate the shear rate of fluid
Then 5th step makes the shear rate gone out with multiple first pressure sensors at the conveying pipeline inner wallFor abscissa, with shearing force τwFor the relation curve of ordinate, the i.e. rheological curve of fluid, to judge the rheology class of fluid
Type；By selecting rheological equation appropriate, experimental data is fitted, determines rheological parameter, is that material proportion is pumped with optimization
It send and data support is provided.
And the present invention can also increase computing module, and the computing module is connect with controller, automatic to calculate shearing speed
RateWith shearing force τw；Drawing module can also be arranged in the present invention, and the drawing module is connect with the computing module, be used for root
According to outlet shear rateWith shearing force τw, automatically generate and go out the conveying pipeline inner wall with multiple first pressure sensors
The shear rate at placeFor abscissa, with shearing force τwFor the relation curve of ordinate.
Referring to Fig. 1, Fig. 2, first pressure sensor of the present invention and the second pressure sensor include that pressure is visited
First 1, package casing 2, circuit board and liquid crystal display 3；The pressure probe is mounted on the package casing upper end, the liquid crystal
Display is mounted on the package casing lower end, and the circuit board is mounted in the package casing；It is the pressure probe, described
Liquid crystal display is connect with the circuit board；The pressure probe includes pressure sensor piece 101 and mounting base 102, the pressure
Power sensing chip is mounted on the mounting base upper end；The pressure sensor piece is made of thickness of the stainless steel plate of 4~6mm；It is stainless
The pressure sensor piece made of steel plate, hard, sound construction are not easy to be punctured by hard materials such as iron plates, and stainless steel
Expect acid-fast alkali-proof, have corrosion resistant performance, is suitable for detecting the pressure of hazardous waste material.
Referring to Fig. 2, circuit board of the present invention is equipped with RS-485 interfaces；RS-485 interfaces are set, are convenient for the pressure
Force snesor is connect in the indoor control device of control based on Modbus industrial Fieldbus protocols with setting, forms novel net
The full distributed control system of network integrated form.
Referring to Fig. 1, Fig. 2, first pressure sensor of the present invention, the second pressure sensor, the displacement sensing
Device is connect with the controller by RS-485 buses；RS-485 buses use balance transmission and differential received, have and inhibit
The ability of common mode interference can detect the voltage down to 200mV, therefore transmit signal energy in addition bus transceiver has high sensitivity
It is restored other than km.
Referring to Fig. 1, the invention also includes third pressure sensor, the third pressure sensor connects with the controller
It connects, the third pressure sensor is mounted in the master cylinder of the solid pump, the master cylinder pressure for detecting the solid pump
Power；The third pressure sensor detects the master cylinder pressure of solid pump in real time, and passes data to the controller；It is described
Controller reading, the data for storing and showing the third pressure sensor；And it is detected according to the third pressure sensor
Master cylinder pressure p, utilize formula(wherein：D1For main cylinder diameter, D2For solid pump outlet diameter,
pfFor master cylinder null when master cylinder pressure), calculate the outlet pressure p of solid pumpt, compare the outlet pressure for the solid pump extrapolated
The outlet pressure for the solid pump that power is detected with the second pressure sensor；Since iron sheet etc. is entrained in hazardous waste material
In, cause pressure at solid pump axle center to be unable to measure, the present invention is pumped out using the solid that the second pressure sensor detects
Mouth side wall position static pressure replaces static pressure at axle center, and passes through the master cylinder pressure that the third pressure sensor measures and carry out
It calculates comparison, confirms the second pressure sensor detection result and correcting mode, improve detection accuracy.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of pipeline hazardous waste rheological behavior tests system, it is characterised in that：Including solid pump, rotary kiln and it is connected to
The conveyance conduit of the solid pump, the rotary kiln；The conveyance conduit is equipped with multiple first pressure sensors, multiple described
First pressure sensor is along the conveyance conduit length direction arranged for interval；The solid pump discharge is sensed equipped with second pressure
Device, the master cylinder of the solid pump is interior to be equipped with displacement sensor；The first pressure sensor, the second pressure sensor,
Institute's displacement sensors are connect with controller；
The first pressure sensor is for detecting discharge pressure in the conveyance conduit；
The second pressure sensor is for detecting the solid pump discharge pressure；
Institute's displacement sensors are used to detect the piston displacement of the solid pump；
The controller, the data for reading, showing and storing the first pressure sensor, institute's displacement sensors.
2. pipeline hazardous waste rheological behavior according to claim 1 tests system, it is characterised in that：Described first
Pressure sensor and the second pressure sensor include pressure probe, package casing, circuit board and liquid crystal display；It is described
Pressure probe is mounted on the package casing upper end, and the liquid crystal display is mounted on the package casing lower end, the circuit
Plate is mounted in the package casing；The pressure probe, the liquid crystal display are connect with the circuit board；The pressure
Probe includes pressure sensor piece and mounting base, and the pressure sensor piece is mounted on the mounting base upper end；The pressure sensor piece
It is made of the stainless steel plate of 4~6mm of thickness.
3. pipeline hazardous waste rheological behavior according to claim 2 tests system, it is characterised in that：The circuit
Plate is equipped with RS-485 interfaces.
4. pipeline hazardous waste rheological behavior according to claim 3 tests system, it is characterised in that：Described first
Pressure sensor, the second pressure sensor, institute's displacement sensors are connect with the controller by RS-485 buses.
5. pipeline hazardous waste rheological behavior according to claim 4 tests system, it is characterised in that：Further include
Three pressure sensors, the third pressure sensor are connect with the controller, and the third pressure sensor is mounted on described
In the master cylinder of solid pump, the master cylinder pressure for detecting the solid pump.
6. pipeline hazardous waste rheological behavior according to claim 5 tests system, it is characterised in that：The displacement
Sensor is BALLUFF micropulse linear displacement transducers.
7. pipeline hazardous waste rheological behavior according to claim 6 tests system, it is characterised in that：The control
Device is S7-200 controllers.
8. a kind of detection method of pipeline hazardous waste rheological behavior test system according to claim 7, special
Sign is：
The first step, multiple first pressure sensors detect the discharge pressure of multiple spot on the conveyance conduit in real time, and described
Two pressure sensors detect the outlet pressure of the solid pump in real time, and institute's displacement sensors detect the work of the solid pump in real time
Displacement is filled in, and passes data to the controller；
Second step, the controller read, store and show the first pressure sensor, the second pressure sensor, institute
The data of displacement sensors；
Third walks, and the shearing at i-th of first pressure sensor at the conveying pipeline inner wall is calculated by following equation
Power τw,
Wherein：D represents the conveyance conduit internal diameter, mm；
LiRepresent effective delivered length between i-th of first pressure sensor and the second pressure sensor, mm；
P0Represent the solid pump discharge pressure that the second pressure sensor detects, KPa；
PiRepresent discharge pressure in the conveyance conduit that i-th of first pressure sensor detects, KPa；
Similarly calculate the shearing force τ at the conveying pipeline inner wall at multiple first pressure sensorsw；
4th step, using the outlet pressure data of same time as abscissa, piston displacement data establish outlet as ordinate
Relationship coordinate diagram between pressure and piston position；Coordinate diagram shows that, with the increase of piston displacement, outlet pressure initially enters
Rapid increase stage, subsequently into plateau, the solid pump, which is in, at this time stablizes pumping stages, and setting outlet pressure is steady
The starting point piston displacement value in stage is a, and the terminal piston displacement value of outlet pressure plateau is b, then utilizes following equation meter
Calculate the average rate of pumping V of the solid pump
Wherein：T represents the solid pump and stablizes pumping stages duration, s；
Then the shearing of fluid at the conveying pipeline inner wall at i-th of first pressure sensor is calculated according to following equation
Rate
Similarly calculate the shear rate of fluid at the conveying pipeline inner wall at multiple first pressure sensors
Then 5th step makes the shear rate gone out with multiple first pressure sensors at the conveying pipeline inner wallFor
Abscissa, with shearing force τwFor the relation curve of ordinate, the i.e. rheological curve of fluid, to judge the rheology type of fluid；
By selecting rheological equation appropriate, experimental data is fitted, determines rheological parameter.
9. detection method according to claim 8, it is characterised in that：The third pressure sensor detects solid pump in real time
Master cylinder pressure, and pass data to the controller；The controller reads, stores and shows that the third pressure passes
The data of sensor.
10. detection method according to claim 9, it is characterised in that：It is detected according to the third pressure sensor
Master cylinder pressure p calculates the outlet pressure p of solid pump using following equationt,
Wherein：D1For main cylinder diameter, mm；
D2For solid pump outlet diameter, mm；
pfFor master cylinder null when master cylinder pressure, KPa；
The outlet pressure for the solid pump that the outlet pressure for the solid pump that comparison is extrapolated is detected with the second pressure sensor,
Judge whether the outlet pressure for the solid pump that the second pressure sensor detects is accurate.
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