CN2085960U - Capillary rheometer - Google Patents
Capillary rheometer Download PDFInfo
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- CN2085960U CN2085960U CN 91203474 CN91203474U CN2085960U CN 2085960 U CN2085960 U CN 2085960U CN 91203474 CN91203474 CN 91203474 CN 91203474 U CN91203474 U CN 91203474U CN 2085960 U CN2085960 U CN 2085960U
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Abstract
The utility model provides an automatic capillary rheometer which can be used for the on-line (or off-line) measurement of the rheological parameter and the drag reduction characteristic of a newtonian liquid or a non newtonian liquid, and the capillary rheometer is especially suitable for the on-line measurement of the rheological property of petroleum or a well washing liquid of a geological drilled well. The utility model is composed of a liquid voltage stabilization, constant current and differential pressure measuring system, an automatic control system, a data processing and data output system, and a liquid collecting and reverse flow system. Measuring range can be enlarged through replacing a matched pressure sensor and a slot type capillary, and the utility model can manually or automatically measure the rheological parameter and the drag reduction characteristic of a liquid with a shear rate of 100 to 100, 000 reverse seconds continuously. A manual measurement error is equal to or smaller than 1 %, and an automatic measurement error is equal to or smaller than 3 %.
Description
The utility model belongs to a kind of mensuration newton's liquid or non newtonian liquid, particularly measures the automatic capillary viscosimeter of oil or geological drilling liquid rheological parameter and property of reduction drag.
At present, the automatic capillary viscosimeter of domestic existing bridge-type (Chinese patent 87209341), its differential pressure measurement system is by four garden section kapillaries and two bridge-type differential pressure measurement streams that differential pressure pick-up is formed, its structure is complicated, though measuring accuracy is higher, but be not suitable for the online or off-line measurement of non newtonian liquid, particularly oil and geological drilling liquid rheological parameter and property of reduction drag.
The purpose of this utility model, be to provide a kind of can be manually or continuous automatically, online or off-line measurement shear rate is fallen the newton's liquid in second scope or the automatic capillary rheometer of non newtonian liquid, particularly oil or geological drilling liquid rheological parameter and property of reduction drag 100～100000.
The purpose of this utility model, be by liquid stabilizing, constant current, differential pressure measurement, control, data processing and data output system, and liquid is collected, the automatic capillary rheometer of return-flow system composition is realized, it is characterized in that: the differential pressure measurement system is made up of a slit kapillary and a pressure transducer that is installed on this tube wall capillaceous.
The ratio (a/b) of slit of the present utility model slit width capillaceous (a) and slit height (b) is more than or equal to 10, and its equivalent diameter (D
When) be less than or equal to 3 millimeters, be equal to or greater than 40 equivalent diameter (D from the liquid inlet
When) length, on the tube wall of slit one half width (a/2) intersection, having diameter (d) is 0.5～1.0 millimeter, or equals the pressure tap of pressure transducer diameter.
The slit kapillary that the utility model adopted, though the section equivalent size is a capillary size, but the actual profile size is bigger, helps the installation of sensor and flowing of non newtonian liquid, particularly has the oil or geological drilling liquid the flowing in pipe of solid particle.By changing slit kapillary or the pressure transducer be equipped with, can measure shear rate in 100～100000 liquid rheological characteristicss of falling in second scope, be specially adapted to measure the rheological characteristics of non newtonian liquid under the high-rate of shear.In addition, owing to adopted computing machine and ribbon gymnastics to make the automatically controlled volume pump of controller, the voltage stabilizer of air packet mode, liquid is collected and return-flow system, has guaranteed under steady head manual or automatic continuous on-line or determined off-line flow of liquid variable element and property of reduction drag.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is a measurement process flow diagram of the present utility model.
Fig. 2 is a slit kapillary synoptic diagram of the present utility model.
Replacing with slit width (a) is 50 millimeters, slit height (b) is 1.0 millimeters, pipe range is 1 meter a slit kapillary, with equaling 10 centimetres from the liquid inlet, with slit one half width (a/2) be on 25 millimeters the pressure tap of slit tube wall capillaceous of intersection, install PTV-1 type pressure transducer.
Close through way valve (2) and (6), start automatically controlled volume pump (1), test solution is by pond groove (8), through filter (7) and (4), pump into the voltage stabilizer (3) of band tensimeter (5), after treating that liquid is full of slit kapillary (9), termination of pumping, when treating that liquid is static in the kapillary, gather the value at zero point of pressure transducer by computing machine (12), turn on pump more subsequently, by computing machine (12) through D/A (D/A), be in the operation control (13) of automated location, follow procedure is controlled the discharge capacity and the displacement variation of automatically controlled volume pump (1), voltage stabilizer (3) by band tensimeter (5) monitors and steady pressure, make the test solution of required flow, through slit kapillary (9), liquid header (11) is back to pond groove (8) again.In above-mentioned flow process, the time of pressure transducer (10) follow procedure control, after in time the electric pressure signal that records being amplified, send into computing machine (12) through A/D converter (A/D), after the machine acquisition process, result is sent to data output device (14), can adopt screen display as calculated, printout, and draw mode such as rheological curve and export measurement result automatically.
During manual measurement, only need operation control (13) is placed manual position, automatically controlled metering pump capacity is got final product by manual control.
Claims (2)
1, a kind of capillary rheometer, by liquid stabilizing, constant current, differential pressure measurement, control, data processing and data output system, and liquid is collected, return-flow system is formed, and it is characterized in that: the differential pressure measurement system is made up of slit kapillary and a pressure transducer that is installed on this kapillary wall.
2, capillary rheometer according to claim 1 is characterized in that: the ratio (a/b) of slit slit width capillaceous (a) and slit height (b) is more than or equal to 10, and its equivalent diameter (D
When) be less than or equal to 3 millimeters, be equal to or greater than 40 equivalent diameter (D from the place, liquid inlet
When) length.On the tube wall of slit one half width (a/2) intersection, having diameter (d) is 0.5～1 millimeter, or equals the pressure tap of pressure transducer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203474 CN2085960U (en) | 1991-03-06 | 1991-03-06 | Capillary rheometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91203474 CN2085960U (en) | 1991-03-06 | 1991-03-06 | Capillary rheometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2085960U true CN2085960U (en) | 1991-10-02 |
Family
ID=4913783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91203474 Withdrawn CN2085960U (en) | 1991-03-06 | 1991-03-06 | Capillary rheometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2085960U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308074B (en) * | 2007-05-18 | 2010-07-28 | 中国石油化工股份有限公司 | High-temperature high pressure oil quality characteristic measuring apparatus and measurement method |
| CN101696925B (en) * | 2009-10-23 | 2011-07-27 | 西安交通大学 | Device and method for testing performance of two-phase flow drag reducer |
| CN101256179B (en) * | 2007-03-01 | 2012-01-11 | 中国石油天然气股份有限公司 | Indoor test loop path for oil product drag reducer |
| CN103048243A (en) * | 2011-10-13 | 2013-04-17 | 中国石油化工股份有限公司 | Simulative friction measuring device |
| PL423525A1 (en) * | 2017-11-21 | 2019-06-03 | Politechnika Lodzka | Capillary rheometer |
| CN110593788A (en) * | 2018-05-24 | 2019-12-20 | 广东技术师范学院 | Intelligent drilling fluid monitoring system |
| CN113295578A (en) * | 2021-05-14 | 2021-08-24 | 上海神开石油科技有限公司 | Online measurement device and method for viscosity of upward-returning drilling fluid |
-
1991
- 1991-03-06 CN CN 91203474 patent/CN2085960U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101256179B (en) * | 2007-03-01 | 2012-01-11 | 中国石油天然气股份有限公司 | Indoor test loop path for oil product drag reducer |
| CN101308074B (en) * | 2007-05-18 | 2010-07-28 | 中国石油化工股份有限公司 | High-temperature high pressure oil quality characteristic measuring apparatus and measurement method |
| CN101696925B (en) * | 2009-10-23 | 2011-07-27 | 西安交通大学 | Device and method for testing performance of two-phase flow drag reducer |
| CN103048243A (en) * | 2011-10-13 | 2013-04-17 | 中国石油化工股份有限公司 | Simulative friction measuring device |
| PL423525A1 (en) * | 2017-11-21 | 2019-06-03 | Politechnika Lodzka | Capillary rheometer |
| CN110593788A (en) * | 2018-05-24 | 2019-12-20 | 广东技术师范学院 | Intelligent drilling fluid monitoring system |
| CN113295578A (en) * | 2021-05-14 | 2021-08-24 | 上海神开石油科技有限公司 | Online measurement device and method for viscosity of upward-returning drilling fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |