CN104020077B - Rheometer - Google Patents
Rheometer Download PDFInfo
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- CN104020077B CN104020077B CN201410241201.0A CN201410241201A CN104020077B CN 104020077 B CN104020077 B CN 104020077B CN 201410241201 A CN201410241201 A CN 201410241201A CN 104020077 B CN104020077 B CN 104020077B
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- concrete
- flow graph
- cylinder barrel
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- oil
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- 239000004567 concrete Substances 0.000 claims abstract description 78
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000001737 promoting effect Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 14
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 10
- 238000005086 pumping Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000003556 assay Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The invention provides a rheometer, which comprises a cylinder barrel, two concrete pistons arranged in the cylinder barrel, a pressurizing device and a driving device, wherein the pressurizing device is arranged on the two concrete pistons; the pressurizing device is used for driving at least one concrete piston to pressurize the concrete in the cylinder barrel; the driving device is used for pushing the cylinder barrel to move relative to the concrete piston; the rheometer further comprises a pressure detection device, and the pressure detection device is used for detecting the concrete pressure in the cylinder barrel; the rheometer further comprises a speed detection device, and the speed detection device is used for detecting the movement speed of the cylinder barrel relative to the concrete piston. The rheometer with the structure has the advantages that the cylinder barrel is used for containing concrete, the pressurizing device pushes the concrete piston to pressurize the concrete, or the pressurizing device is fixed, the driving device pushes the cylinder barrel to move, in the process, the pressure of the concrete and the movement speed of the cylinder barrel are detected, and the rheological property of the material is measured after repeated tests. The device can be suitable for high-pressure environments and can be used for measuring materials under different pressures.
Description
Technical field
The present invention relates to material rheological behavior field, particularly to a kind of flow graph.
Background technology
Along with deepening constantly of China's economic development, infrastructure construction enters the high-speed developing period, and the rheology of material is special
Property, become a popular research direction the most therewith such as the pumping technology of concrete.
According to existing industry standard, about concrete pumping resistance in " Concrete Pumping Construction technical regulation ", generally adopt
Use following empirical equation:
Wherein, Δ P is that unit length is lost along stroke pressure, D is inner diameter of delivery tube, k1 is adhesion coefficient, k2 is speed system
Number, t2/t1 is the ratio that distributing valve switching time and piston push the concrete time, and v is concrete mean flow rate, and α is concrete
The ratio of radial pressure and axial compressive force.
Δ P is the biggest, then explanation frictional resistance is the biggest, and the aid pumpability of concrete is the poorest, pumping construction difficulty is the biggest.Practice
Showing, during Δ P≤0.015MPa.m, the aid pumpability of concrete is preferable.
Above-mentioned concrete pressure consumption figures is much smaller than measured value, has not been suitable for the pumping of Super High high-grade concrete.
Additionally, the assay devices such as existing flow graph are only capable of studying the concrete pumping resistance under normal pressure, it is impossible to
Assessment concrete pumping resistance in actual high-rise pumping.
Therefore, for studying various high-grade concretes rheological behavior under specified pressure, for instructing concrete matched
How the optimization of ratio and improvement, study a kind of stream being applicable to environment under high pressure and can be used for measuring the concrete under different pressures
Become the flow graph of characteristic, become those skilled in the art to need badly and solved the technical problem that.
Summary of the invention
In view of this, the problem to be solved in the present invention is how to provide one be applicable to environment under high pressure and can be used for measuring
The flow graph of the rheological behavior of the concrete under different pressures.
For solving the problems referred to above, the present invention proposes a kind of flow graph, including cylinder barrel, be arranged in described cylinder barrel two
Concrete piston, pressue device, driving means；Described pressue device is for driving at least one concrete piston to enter the concrete in cylinder barrel
Row pressurization；Described driving means is used for promoting described cylinder barrel to move relative to concrete piston；Described flow graph also includes pressure detecting
Device, described pressure-detecting device is for detecting the concrete pressure in described cylinder barrel；Described flow graph also includes velocity measuring
Device, described speed detector is for detecting the described cylinder barrel movement velocity relative to concrete piston.
As the improvement on the one hand of a kind of flow graph of the present invention, described pressue device is the first oil cylinder, described first oil
The cylinder tube of cylinder or piston rod are fixing with one end of described concrete piston to be connected.
As the improvement on the one hand of a kind of flow graph of the present invention, described driving means is the second oil cylinder, described second oil
One end of cylinder is fixedly installed on described cylinder barrel.
As the improvement on the one hand of a kind of flow graph of the present invention, described cylinder barrel is fixedly installed connector, described second
The quantity of oil cylinder is two, and two described second oil cylinders are parallel to described cylinder barrel and arrange, and one end of two described second oil cylinders is divided
Do not fix with described connector and be connected.
As the improvement on the one hand of a kind of flow graph of the present invention, described flow graph includes frame, another of the second oil cylinder
End and described first oil cylinder are respectively arranged in described frame.
As the improvement on the one hand of a kind of flow graph of the present invention, described flow graph also includes control system, described control
System is used for controlling pressue device and driving means action.
As the improvement on the one hand of a kind of flow graph of the present invention, described pressure-detecting device is pressure transducer, and/
Or, described speed detector is displacement transducer.
As the improvement on the one hand of a kind of flow graph of the present invention, described flow graph also includes that oil pump, described oil pump are used for
Drive described first oil cylinder and the second oil cylinder.
As the improvement on the one hand of a kind of flow graph of the present invention, the oil-feed of described second oil cylinder or return line also set
There is flow speed control valve.
The flow graph of said structure, two the concrete pistons including cylinder barrel, being arranged in cylinder barrel, pressue device and driving dress
Putting, pressue device is for driving at least one concrete piston to pressurize the concrete in cylinder barrel, and driving means is then used for pushing away
Moveable cylinder moves relative to concrete piston；Flow graph also includes the pressure-detecting device of the concrete pressure in detecting cylinder barrel, with
And for detecting the described cylinder barrel speed detector relative to the movement velocity of concrete piston.The flow graph of this structure, cylinder barrel is used
In holding concrete, pressue device promotes a concrete piston to pressurize concrete, or pressue device is motionless, by driving means
Promotion cylinder barrel moves, during this, by the pressure of pressure-detecting device detection concrete, Negotiation speed detection device detection cylinder
The movement velocity of cylinder, after repeating test, measures the rheological behavior of material.The flow graph of said structure, with traditional flow graph phase
Ratio, is applicable to environment under high pressure, and can be used for measuring the concrete materials under different pressures.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.
Fig. 1 is the structural representation of a kind of flow graph of the present invention；
Fig. 2 be cylinder barrel with concrete piston coordinate schematic diagram；
Fig. 3 is the hydraulic system principle figure of a kind of flow graph of the present invention.
In Fig. 1 to Fig. 3, the corresponding relation of reference is:
1 first oil cylinder 2 cylinder barrel 3 second oil cylinder
4 frame 5 motor 6 control systems
7 oil pump 8 flow speed control valve 9 first electromagnetic valves
10 second electromagnetic valve 11 first overflow valve 12 check valves
13 second overflow valve 14 fuel tanks
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Combination mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Flow graph as shown in Figure 1, for testing the rheological behavior of material, including cylinder barrel 2, be arranged in cylinder barrel 2 two
Individual concrete piston, pressue device, driving means, wherein, cylinder barrel 2 is built with concrete, and pressue device is for driving two concrete pistons
In one the concrete in cylinder barrel 2 is pressurizeed, driving means is used for promoting cylinder barrel 2 to move relative to concrete piston；Additionally,
Flow graph also includes pressure detecting detection device and speed detector, and pressure-detecting device is for detecting the coagulation in cylinder barrel 2
Soil pressure, speed detector is for detecting the cylinder barrel 2 movement velocity relative to concrete piston.
Technique scheme, in a kind of example, as in figure 2 it is shown, pressue device is the first oil cylinder 1, the first oil cylinder 1 includes
Cylinder tube and piston rod, cylinder tube or piston rod are fixing with one end of concrete piston to be connected, and when the first oil cylinder 1 action, can promote
Concrete piston moves, it is achieved the pressurization to concrete.
Further, driving means is the second oil cylinder 3, and the second oil cylinder 3 is used for promoting cylinder barrel 2 to move and moves relative to concrete piston
Dynamic, specifically, the second oil cylinder 3 includes piston rod, and in one embodiment, piston rod is fixedly installed on cylinder barrel 2, piston rod from
When second oil cylinder 3 stretches out or bounces back, can move up and down by band moveable cylinder 2.
For ensureing the movement that cylinder barrel 2 more balances, in another kind of embodiment, the quantity of the second oil cylinder 3 is preferably two,
Two second oil cylinders 3 can be parallel to cylinder barrel 2 and arrange, and cylinder barrel is provided with connector, and the upper end of two second oil cylinders 3 is solid with connector
Fixed connection, connector is fixing with cylinder barrel 2 to be connected.When two second oil cylinder movements, can move up and down by band moveable cylinder 2.
In technique scheme, flow graph also includes that frame 4, the lower end of the second oil cylinder 3 are fixedly installed in frame 4.This
Outward, when piston rod and the concrete piston of the first oil cylinder 1 are fixed when being connected, then the cylinder tube of the first oil cylinder 1 is fixing with frame 4 is connected；
And when cylinder tube and the concrete piston of the first oil cylinder 1 are fixing is connected time, then the piston rod of the first oil cylinder 1 is fixed with frame 4 and is connected.
Further, pressure-detecting device is pressure transducer, and speed detector is displacement transducer, for convenience of measuring
Concrete pressure, pressure transducer may be disposed in cylinder barrel 2, and for measuring the cylinder barrel 2 position relative to concrete piston traveling speed
Displacement sensor, then may be disposed on cylinder barrel 2.Additionally, flow graph also includes power set and control system 6, power set are used for
Driving the first oil cylinder 1 and the second oil cylinder 3, control system 6 electrically connects with speed detector and pressure-detecting device respectively, and can
Control the pressure in cylinder barrel 2 and the translational speed of cylinder barrel 2.
In technique scheme, power set include oil pump 7 and motor 5, and oil pump 7 is used for being the first oil cylinder 1 and the second oil
Cylinder 3 provides pressure oil, oil pump 7 to be connected with motor 5, when motor 5 energising rotates, drives oil pump 7 to rotate, and the oil inlet end of oil pump 7 sets
Being placed in fuel tank 14, the oil outlet end of oil pump 7 is connected by pipeline and the first oil cylinder 1 and the second oil cylinder 3.
It should be noted that for pressure transducer and displacement transducer, in one embodiment, sensor and control
System 6 electrically connects, and the displacement data acquired in sensor is by connection line real-time Transmission to control system 6.At another kind
In embodiment, sensor and/or control system 6 can arrange signal and receive and discharger, the displacement number acquired in sensor
Transmit in time to control system 6 with discharger according to being received by signal.Control system 6 includes can showing relevant parameter in time
Display screen, by display screen, can read in real time, set related data.
Fig. 3 is the hydraulic system principle figure of flow graph, in hydraulic system, is additionally provided with flow speed control valve the 8, first overflow valve 11 and
Two overflow valves 13, and the first electromagnetic valve 9 and the second electromagnetic valve 10, specifically, the first electromagnetic valve 9 and the first overflow valve 11 are arranged
On pipeline between oil pump 7 and the first oil cylinder 1, the first electromagnetic valve 9 is for controlling the oil circuit of the first oil cylinder 1；Second electromagnetic valve
10 and second overflow valve 13 be arranged on the pipeline between oil pump 7 and the second oil cylinder 3, the second electromagnetic valve 10 is for controlling the second oil
The oil circuit of cylinder 3.
For convenience of testing the concrete materials under high pressure, the oil pressure relief of the first overflow valve 11 may be set to
35MPa, the oil pressure relief of the second overflow valve 13 may be configured as 16MPa.
In technique scheme, the first electromagnetic valve 9 and the second electromagnetic valve 10 are two four-way electromagnetic reversing valves, the first electricity
When the left position of magnet valve 9 works, the rod chamber oil-feed of the first oil cylinder 1, rodless cavity is fuel-displaced.Correspondingly, the right position work of the first electromagnetic valve 9
When making, the rodless cavity oil-feed of the first oil cylinder 1, rod chamber is fuel-displaced.When the left position of the second electromagnetic valve 10 works, having of the second oil cylinder 3
The oil-feed of bar chamber, rodless cavity is fuel-displaced, correspondingly, when the right position of the second electromagnetic valve 10 works, the rodless cavity oil-feed of the second oil cylinder 3, have
Bar chamber is fuel-displaced.
For controlling the movement velocity of the second oil cylinder 3, the pipeline between rodless cavity and the oil pump 7 of the second oil cylinder 3 is additionally provided with
For regulating the flow speed control valve 8 of fluid flow in pipeline, by regulating this flow speed control valve 8, entrance the second oil cylinder 3 rodless cavity can be regulated
Fluid flow, and then regulation cylinder barrel 2 movement velocity.Additionally, in order to the concrete pressurize in cylinder barrel 2, the first oil cylinder 1
Being additionally provided with check valve 12 between rod chamber and cylinder barrel 2, under the effect of check valve 12, fluid can be from the rod chamber of the second oil cylinder 3
Flow in cylinder barrel 2, but cannot reflux.
Suffered in the duct frictional force f of concrete materials represents:
F=(τ0+ η × ∝ × v) × s=(τo+kv)×S
Wherein, f is the shear stress of concrete, s concrete and the contact area of pipeline, τ0It it is the surrender shearing of concrete
Stress, η is the viscosity of concrete,It it is the shear rate of concrete.
∝, k are constant coefficients.
The flow graph of said structure, when concrete materials is carried out test process, material to be measured is placed in cylinder barrel 2, adds
The first oil cylinder 1 after pressure can promote a concrete piston to move, and the second oil cylinder 3 promotes cylinder barrel 2 to move up and down by piston rod.Can lead to
Crossing control system 6 and preset the pressure in cylinder barrel 2 and the translational speed of cylinder barrel 2, each material can be in multiple pressure and shifting
Under dynamic speed, test multiple data, thus measure the rheological behavior of material.Compared with traditional flow graph, have and be applicable to
Environment under high pressure, and the advantage such as the concrete materials that can be used for measuring under different pressures.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. a flow graph, it is characterised in that two concrete pistons, the pressurizations include cylinder barrel (2), being arranged in described cylinder barrel (2)
Device, driving means；Described pressue device is used for driving at least one concrete piston to pressurize the concrete in cylinder barrel (2)；
Described driving means is used for promoting described cylinder barrel (2) to move relative to concrete piston；Described flow graph also includes pressure-detecting device,
Described pressure-detecting device is used for detecting the concrete pressure in described cylinder barrel (2)；Described flow graph also includes that velocity measuring fills
Putting, described speed detector is used for the movement velocity detecting described cylinder barrel (2) relative to concrete piston.
Flow graph the most according to claim 1, it is characterised in that described pressue device is the first oil cylinder (1), described first
The cylinder tube of oil cylinder (1) or piston rod are fixing with one end of described concrete piston to be connected.
Flow graph the most according to claim 2, it is characterised in that described driving means is the second oil cylinder (3), described second
One end of oil cylinder (3) is fixedly installed on described cylinder barrel (2).
Flow graph the most according to claim 3, it is characterised in that be fixedly installed connector on described cylinder barrel (2), described
The quantity of two oil cylinders (3) is two, and two described second oil cylinders (3) are parallel to described cylinder barrel (2) and arrange, two described second oil
One end of cylinder (3) is fixing with described connector respectively to be connected.
Flow graph the most according to claim 4, it is characterised in that described flow graph includes frame (4), the second oil cylinder (3)
The other end and described first oil cylinder (1) be respectively arranged in described frame (4).
Flow graph the most according to claim 1, it is characterised in that described flow graph also includes control system (6), described control
System processed (6) is used for controlling pressue device and driving means action.
Flow graph the most according to claim 1, it is characterised in that described pressure-detecting device is pressure transducer, and/
Or, described speed detector is displacement transducer.
Flow graph the most according to claim 3, it is characterised in that described flow graph also includes oil pump (7), described oil pump
(7) it is used for driving described first oil cylinder (1) and the second oil cylinder (3).
Flow graph the most according to claim 8, it is characterised in that in the oil-feed of described second oil cylinder (3) or return line
It is additionally provided with flow speed control valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241201.0A CN104020077B (en) | 2014-06-03 | 2014-06-03 | Rheometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241201.0A CN104020077B (en) | 2014-06-03 | 2014-06-03 | Rheometer |
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| CN104020077A CN104020077A (en) | 2014-09-03 |
| CN104020077B true CN104020077B (en) | 2017-01-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316438B (en) * | 2014-11-03 | 2016-06-15 | 北京新奥混凝土集团有限公司 | A kind of towed concrete pumping performance test instrument and test method thereof |
| CN111829922B (en) * | 2020-08-17 | 2023-01-20 | 湘潭大学 | Flow characteristic measuring device for simulating concrete actual pumping process |
| CN112485157B (en) * | 2020-12-15 | 2022-11-29 | 中国科学院空间应用工程与技术中心 | Soft material fluidity detection device |
| CN114112795B (en) * | 2021-11-09 | 2024-01-12 | 东南大学 | Test device and test method for fresh concrete and boundary resistance characteristics |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4794799A (en) * | 1985-04-03 | 1989-01-03 | Ilmari Paakkinen | Method of and an apparatus for measuring the properties, particularly the compactibility of a stiff mass to be cast |
| US5327778A (en) * | 1992-02-10 | 1994-07-12 | Park Noh A | Apparatus and method for viscosity measurements using a controlled needle viscometer |
| DE102004015707A1 (en) * | 2004-03-29 | 2005-11-03 | Technische Universität Berlin | Rheometer for measuring characteristics of a non-Newtonian medium includes a device measuring time taken for a ball-shaped body that falls through medium contained in a housing, optionally with assistance of additional weights |
| CN101403675A (en) * | 2008-11-14 | 2009-04-08 | 哈尔滨工业大学 | Novel mixed concrete viscosity measuring instrument |
| CN201497692U (en) * | 2009-07-10 | 2010-06-02 | 天津市建筑科学研究院 | Numerically controlled intelligent tester of concrete viscosity |
| CN102607997A (en) * | 2012-02-17 | 2012-07-25 | 哈尔滨工业大学 | Fresh concrete viscosity measuring apparatus |
| CN203011798U (en) * | 2012-11-30 | 2013-06-19 | 长沙理工大学 | Comprehensive fresh cement concrete performance tester |
-
2014
- 2014-06-03 CN CN201410241201.0A patent/CN104020077B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4794799A (en) * | 1985-04-03 | 1989-01-03 | Ilmari Paakkinen | Method of and an apparatus for measuring the properties, particularly the compactibility of a stiff mass to be cast |
| US5327778A (en) * | 1992-02-10 | 1994-07-12 | Park Noh A | Apparatus and method for viscosity measurements using a controlled needle viscometer |
| DE102004015707A1 (en) * | 2004-03-29 | 2005-11-03 | Technische Universität Berlin | Rheometer for measuring characteristics of a non-Newtonian medium includes a device measuring time taken for a ball-shaped body that falls through medium contained in a housing, optionally with assistance of additional weights |
| CN101403675A (en) * | 2008-11-14 | 2009-04-08 | 哈尔滨工业大学 | Novel mixed concrete viscosity measuring instrument |
| CN201497692U (en) * | 2009-07-10 | 2010-06-02 | 天津市建筑科学研究院 | Numerically controlled intelligent tester of concrete viscosity |
| CN102607997A (en) * | 2012-02-17 | 2012-07-25 | 哈尔滨工业大学 | Fresh concrete viscosity measuring apparatus |
| CN203011798U (en) * | 2012-11-30 | 2013-06-19 | 长沙理工大学 | Comprehensive fresh cement concrete performance tester |
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| CN104020077A (en) | 2014-09-03 |
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