CN203672749U - Testing device for testing contact angle and interfacial tension under conditions of ultrahigh pressure and high temperature - Google Patents
Testing device for testing contact angle and interfacial tension under conditions of ultrahigh pressure and high temperature Download PDFInfo
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- CN203672749U CN203672749U CN201320792134.2U CN201320792134U CN203672749U CN 203672749 U CN203672749 U CN 203672749U CN 201320792134 U CN201320792134 U CN 201320792134U CN 203672749 U CN203672749 U CN 203672749U
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Abstract
The utility model discloses a testing device for testing a contact angle and the interfacial tension under the conditions of ultrahigh pressure and high temperature, and belongs to the field of an interfacial chemistry analysis instrument. An ultrahigh pressure and high temperature testing cavity body is dismountable; an injection pump and a control structure of the injection pump can be turned, an electric control box is arranged on one side of a machine frame, a camera, the injection pump and the control structure of the injection pump are arranged on a bracket on the other side of the machine frame, a telecentric lens is connected to the camera, an LED parallel light source is connected to the side of the electric control box, an XYZR four-dimensional optics translation platform is arranged on the bracket in the middle of the machine frame, a two-dimensional horizontal adjustment platform is arranged on the XYZR four-dimensional optics translation platform, and the ultrahigh pressure and high temperature testing cavity body is arranged on the two-dimensional horizontal adjustment platform in a dismountable way. The testing device can be used for analyzing the contact angle, the interfacial tension value and the like under the condition of various pressure, and has great promotional value in fields of oil fields, petrifaction, new material research and the like.
Description
Technical field
This patent is announced a kind of true sessile drop method or the test contact angle of image fitting process matching Young-Laplace equation and method of testing and a kind of proving installation of testing contact angle and table/interfacial tension under UHV (ultra-high voltage) and hot conditions of interfacial tension value of adopting, and belongs to surface chemistry field of analytic instrument.
Background technology
The basic indexs such as liquid-liquid interface tension force, liquid-gas meter surface tension and solid-liquid contact angle value are the basic parameters that characterizes material physicochemical property, a droplet drop on contact angle refers to and drips in solid level plane, solid-liquid-gas three-phase point of interface place on solid surface, the angle that its gas-liquid interface and solid-liquid interface two tangent lines form when liquid phase is clipped in wherein, is shown in accompanying drawing 1.Contact angle test is the main means of analyzing solid-liquid interface physicochemical property.By the contact angle value that obtains of test, through Equation of state algorithm, only use a kind of drop just can analyze very accurately to draw the surface tension value (dyne value) of solid.And the capillary test of liquid-liquid interface tension force and liquid-gas is also topmost physical index in physicochemical analysis, by theoretical analysis, we know, pressure and temperature is main two indexs that affect material surface chemical property.Under controlled pressure condition, interfacial tension and contact angle measured value, particularly UHV (ultra-high voltage) (more than 10Mpa) are for a long time because technical reason is never broken through.At present, the key instrument that tertiary oil recovery is used is that an interfacial tensimeter is dripped in rotation, and this instrument can only be simulated the interfacial tension measured value under low pressure and temperature control condition, cannot simulate under present most of actual formation condition up to 30Mpa even more high pressure condition.Meanwhile, because viscosity of crude is larger, directly use high pressure capillary to inject, the measured value technical development under the contact angle measured value condition of high voltage of crude oil and oil displacement agent interfacial tension measured value or crude oil, oil displacement agent and core is slow for a long time.
At present, contact angle and interfacial tension testing tool are all instruments of standard design conventionally, and volume is large, needs mains-supplied, is unfavorable for carrying or field work, are also beneficial to the measured value of complex sample, large scale sample.As " based on the measuring analyzer for dynamic characteristics of liquid surface and interface of high speed image processing " patent No. in existing Patent data storehouse: 200610050811.8 and 200620103753.6, " contact angle and surface energy measurement mechanism " patent No.: 201010600278.4, " measuring contact angle device " patent No.: 200710142656.7 etc.
The Chinese patent ZL200910034768.X device of synchro measure drop temperature, surface tension, contact angle " a kind of temperature control wet " and ZL201210127093.5 " a kind of temperature control, control are wet, measure the device of liquid-drop contact angle and roll angle under pressure control condition ", describe that a kind of temperature control, control are wet, measured the device of liquid-drop contact angle and roll angle under pressure control condition, that a kind of fuzzyyer theoretical property is described, concrete implementation detail is also that generality is described, from implementing, operability is not strong.
U.S. Pat 4942760 " APPARATUS FOR THE MEASUREMENT OF INTERFACIAL TENSION " has proposed a device that has test interface tension force under pressure condition of a phase pairing approximation, but its patent main innovate point is can be by the method for liquid-gas interface tension force under the mechanism's testing high voltage condition that can change online syringe needle of a particular design, although proposed to use two supercharge pumps, but its principle of work is to complete pressure control by the mode of pressure cycling, rather than inject two-way liquid.By simulation analysis, we also can further reach a conclusion, and the sealing of such device is very general, cannot complete the seal request under condition of high voltage; And the common pressure of liquid-gas interface tension test is increased to some, gas liquefy, and cannot complete test at all.From the mechanism design of needle exchange head, the testing algorithm of such device is most basic select plane algorithm, and the diameter of syringe needle directly can have influence on measured value result.So the content proposing in patent is relatively backward, exploitativeness is general, also cannot solve that aforesaid UHV (ultra-high voltage), control are wet, the demand of high precision interfacial tension and contact angle measured value.
This patent novelty has proposed a kind of for solving interfacial tension and the contact angle proving installation under UHV (ultra-high voltage) and temperature control condition, comprise that two UHV (ultra-high voltage) increase pump (top pressure 100Mpa, even higher), the UHV (ultra-high voltage) of a bilateral view window of being made by sapphire glass and high temperature cavity, high viscosity samples heating bath, high pressure connection fittings (three-way valve, high pressure capillary), video camera with telecentric lens and source of parallel light, by taking after the contour images of drop, adopt the test of matching Young-Laplace equation to obtain contact angle and interfacial tension value, this device can be analyzed contact angle and the interfacial tension value etc. in different pressures situation, in oil field, petrochemical industry, the fields such as new material research have extremely wide promotional value, especially in tertiary oil recovery simulated experiment, by simulation gather environment actual pressure and temperature conditions and and then measured value interfacial tension and contact angle value, these apparatus and method are very effective.
Summary of the invention
Under UHV (ultra-high voltage) (maximum 100Mpa) and temperature control (maximum temperature 200 is spent) condition, complete high precision measurement and have the sticky contact angle of all product systems and the object of interfacial tension for realizing, we provide a kind of UHV (ultra-high voltage), under high temperature, test the proving installation of contact angle and interfacial tension, can analyze contact angle and interfacial tension value etc. in different pressures situation, in oil field, petrochemical industry, the fields such as new material research have extremely wide promotional value, especially in tertiary oil recovery simulated experiment, by simulation gather environment actual pressure and temperature conditions and then measured value interfacial tension and contact angle value.
The purpose of this utility model realizes by the following technical solutions.
Under UHV (ultra-high voltage), high temperature, test the proving installation of contact angle and interfacial tension, mainly comprise: frame, electric control box, LED source of parallel light, UHV (ultra-high voltage) and high temperature test cavity, syringe pump and control structure thereof, telecentric lens, video camera, two-dimensional level is adjusted platform, the four-dimensional optical translation platform of XYZR, four horizontal adjustment pin; UHV (ultra-high voltage) and high temperature test cavity are dismountable; Syringe pump and control structure thereof can be overturn, electric control box is arranged at frame one side, on the support of frame opposite side, be provided with video camera and syringe pump and control structure thereof, on video camera, be connected with telecentric lens, electric control box side is connected with LED source of parallel light, on the bracing frame of central rack, be provided with the four-dimensional optical translation platform of XYZR, on the four-dimensional optical translation platform of XYZR, be provided with two-dimensional level and adjust platform, two-dimensional level is adjusted on platform and is provided with dismountable UHV (ultra-high voltage) and high temperature test cavity.
For making drop profile reach sub-pixel, through our long-term test, in the selection of camera lens and light source, adopt following structure: (1), in the selection of camera lens, adopts telecentric lens, thereby significantly promote the sharpness of the depth of field and contour edge; (2), in the selection of background light source, adopt LED source of parallel light, thereby significantly promote the sharpness of the depth of field and contour edge; (3) in the selection of video camera, choose the USB2.0 of German IDS company or the high-speed camera of USB3.0, broadcasting speed reaches 60 frames/more than second.
Described UHV (ultra-high voltage) and high temperature test cavity, comprising: high-pressure sensor or tensimeter, high pressure valve, liquid storage pool, supercharge pump, Triple Valve with High Pressure, high pressure capillary, pressure cap, UHV (ultra-high voltage) and high temperature cavity, blowdown valve, waste liquid pool, crude oil heating cavity, UHV (ultra-high voltage) and high temperature cavity one end connect 2 high pressure capillaries by Triple Valve with High Pressure and pressure cap, a high pressure capillary is attached to Triple Valve with High Pressure, on Triple Valve with High Pressure, be connected with high-pressure sensor or tensimeter and supercharge pump, on supercharge pump, be connected with liquid storage pool by high pressure valve, another high pressure capillary connects successively blowdown valve and is connected waste liquid pool with after high pressure valve, UHV (ultra-high voltage) and the high temperature cavity other end are connected to supercharge pump through high pressure capillary after connecting crude oil heating cavity by Triple Valve with High Pressure, on supercharge pump, be connected with liquid storage pool by high pressure valve, on the Triple Valve with High Pressure of supercharge pump end, be connected with high-pressure sensor or tensimeter.
Described UHV (ultra-high voltage) and high temperature cavity, inner structure is symmetric design, its composition structure comprises; Recycle oil bath water mouth, Triple Valve with High Pressure, pressure cap, circulating heat conduction oil circulation cavity, lock screw, high pressure capillary, temperature sensor, sapphire glass, side cover, sapphire glass, polytetrafluoro O-ring seal group, core, polytetrafluoro O-ring seal, core support, UHV (ultra-high voltage) chamber body; In UHV (ultra-high voltage) chamber body, connect side cover by lock screw, UHV (ultra-high voltage) chamber body both sides are provided with recycle oil bath water mouth and pressure cap, pressure cap connects Triple Valve with High Pressure, pressure cap is connected to the core with core support by high pressure capillary in UHV (ultra-high voltage) chamber body, on the side cover of the both sides of core, be provided with sapphire glass, sapphire glass and side cover junction are provided with polytetrafluoro O-ring seal group, polytetrafluoro O-ring seal and PEEK O-ring seal, are also provided with temperature sensor in UHV (ultra-high voltage) chamber body.
Described crude oil heating cavity, its composition structure comprises: recycle oil bath water mouth, circulating heat conduction oil circulation cavity, chamber body, pressure cap, temperature sensor, in chamber body, cross high pressure capillary and there is pressure cap at two ends, in chamber body, there is temperature sensor, in chamber body, be provided with circulating heat conduction oil circulation cavity, on circulating heat conduction oil circulation cavity, be provided with two recycle oil bath water mouths.
The utility model adopts the different mode for connector sealing of two covers, comprise: when hermetically-sealed construction (without high pressure capillary) while 1) connection between pressure cap or parts, adopt male mouthful of chamfering sealing of female mouthful of chamfering of connecting structure and connecting structure, more stubborn tighter in rundown process; 2) there is high pressure capillary place, when sealing, adopt equally the structure that chamfering is different, increase the pressure ring of a both sides chamfering structure simultaneously.
The utility model is mainly by two supercharge pumps, the UHV (ultra-high voltage) of the bilateral view window of being made by sapphire glass and high temperature cavity, high viscosity samples heating bath, high pressure connection fittings (three-way valve, high pressure capillary), with the composition such as video camera and source of parallel light of telecentric lens, by taking after the contour images of drop, adopt the test of matching Young-Laplace equation to obtain contact angle and interfacial tension value, can analyze contact angle and interfacial tension value etc. in different pressures situation, in oil field, petrochemical industry, the fields such as new material research have extremely wide promotional value, especially in tertiary oil recovery simulated experiment, by simulation gather environment actual pressure and temperature conditions and then measured value interfacial tension and contact angle value.
accompanying drawing explanation
Fig. 1: the UHV (ultra-high voltage) described in this patent and high temperature contact angle and interfacial tension test device front elevation;
In Fig. 1: 1-electric control box; 2-LED source of parallel light; 3-UHV (ultra-high voltage) and high temperature test cavity; 4-syringe pump and control structure thereof; 5-telecentric lens; 6-video camera; 7-two-dimensional level is adjusted platform; The four-dimensional optical translation platform of 8-XYZR; Tetra-horizontal adjustment pin of 9-.
Fig. 2: the connection relation figure of the UHV (ultra-high voltage) described in this patent Fig. 2-3 and high temperature cavity;
In Fig. 2: 10-high-pressure sensor or tensimeter; 11-high pressure valve; 12-liquid storage pool; 13-supercharge pump; 14-Triple Valve with High Pressure; 15-high pressure capillary; 16-pressure cap; 17-Triple Valve with High Pressure; 18-UHV (ultra-high voltage) and high temperature cavity; 19-high pressure valve; 20-blowdown valve; 21-waste liquid pool; 22-Triple Valve with High Pressure; 23-crude oil heating cavity; 24-high pressure capillary; 25-supercharge pump
Fig. 3: the UHV (ultra-high voltage) described in this patent Fig. 3-18 and high temperature cavity schematic diagram;
In Fig. 3: 26-recycle oil bath water mouth is rapid-acting coupling; 27-Triple Valve with High Pressure; 28-pressure cap; 29-circulating heat conduction oil circulation cavity; 30-lock screw; 31-high pressure capillary; 32-temperature sensor; 33-sapphire glass; 34-side cover; 35-sapphire glass; 36-PEEK O-ring seal; 37-polytetrafluoro O-ring seal group; 38-core; 39-polytetrafluoro O-ring seal; 40-core support; 41-high pressure capillary; 42-UHV (ultra-high voltage) chamber body; 43-pressure cap; 44-T-valve.
Fig. 4: the heating crude oil cavity schematic diagram described in this patent Fig. 3-23;
In Fig. 4: 45-recycle oil bath water mouth; 46-circulating heat conduction oil circulation cavity; 47-chamber body; 48-pressure cap; 49-temperature sensor.
Fig. 5: the hermetically-sealed construction when connecting between high pressure capillary pressure cap or parts relating in this patent Fig. 3;
In Fig. 5: female mouthful of chamfering of 50-connecting structure; The public mouthful chamfering of 51-connecting structure.
Fig. 6: the capillary seal structure relating in this patent Fig. 3;
In Fig. 6: 52-high pressure capillary; Female mouthful of chamfering of 53-connecting structure; 54-pressure ring; Female mouthful of chamfering of 55-connecting structure.
Embodiment
Embodiment as shown in Figure 1, under UHV (ultra-high voltage) (maximum 100Mpa) and temperature control (maximum temperature 200 is spent) condition, complete high precision measurement and have the sticky contact angle of all product systems and the object of interfacial tension for realizing, the utility model provides the proving installation of testing contact angle and interfacial tension under a kind of UHV (ultra-high voltage), high temperature, mainly comprise: frame, electric control box, LED source of parallel light, UHV (ultra-high voltage) and high temperature test cavity, syringe pump and control structure thereof, telecentric lens, video camera, two-dimensional level is adjusted platform, the four-dimensional optical translation platform of XYZR, four horizontal adjustment pin; UHV (ultra-high voltage) and high temperature test cavity are dismountable; Syringe pump and control structure thereof can be overturn, electric control box is arranged at frame one side, on the support of frame opposite side, be provided with video camera and syringe pump and control structure thereof, on video camera, be connected with telecentric lens, electric control box side is connected with LED source of parallel light, on the bracing frame of central rack, be provided with the four-dimensional optical translation platform of XYZR, on the four-dimensional optical translation platform of XYZR, be provided with two-dimensional level and adjust platform, two-dimensional level is adjusted on platform and is provided with dismountable UHV (ultra-high voltage) and high temperature test cavity.
For making drop profile reach sub-pixel, through our long-term test, in the selection of camera lens and light source, adopt following structure: (1), in the selection of camera lens, adopts telecentric lens, thereby significantly promote the sharpness of the depth of field and contour edge; (2), in the selection of background light source, adopt LED source of parallel light, thereby significantly promote the sharpness of the depth of field and contour edge; (3) in the selection of video camera, choose the USB2.0 of German IDS company or the high-speed camera of USB3.0, broadcasting speed reaches 60 frames/more than second.
Further, as shown in Figure 2, described UHV (ultra-high voltage) and high temperature test cavity, comprising: high-pressure sensor or tensimeter, high pressure valve, liquid storage pool, supercharge pump, Triple Valve with High Pressure, high pressure capillary, pressure cap, UHV (ultra-high voltage) and high temperature cavity, blowdown valve, waste liquid pool, crude oil heating cavity, UHV (ultra-high voltage) and high temperature cavity one end connect 2 high pressure capillaries by Triple Valve with High Pressure and pressure cap, a high pressure capillary is attached to Triple Valve with High Pressure, on Triple Valve with High Pressure, be connected with high-pressure sensor or tensimeter and supercharge pump, on supercharge pump, be connected with liquid storage pool by high pressure valve, another high pressure capillary connects successively blowdown valve and is connected waste liquid pool with after high pressure valve, UHV (ultra-high voltage) and the high temperature cavity other end are connected to supercharge pump through high pressure capillary after connecting crude oil heating cavity by Triple Valve with High Pressure, on supercharge pump, be connected with liquid storage pool by high pressure valve, on the Triple Valve with High Pressure of supercharge pump end, be connected with high-pressure sensor or tensimeter.
Further, as shown in Figure 3, described UHV (ultra-high voltage) and high temperature cavity, inner structure is symmetric design, its composition structure comprises; Recycle oil bath water mouth, Triple Valve with High Pressure, pressure cap, circulating heat conduction oil circulation cavity, lock screw, high pressure capillary, temperature sensor, sapphire glass, side cover, sapphire glass, polytetrafluoro O-ring seal group, core, polytetrafluoro O-ring seal, core support, UHV (ultra-high voltage) chamber body; In UHV (ultra-high voltage) chamber body, connect side cover by lock screw, UHV (ultra-high voltage) chamber body both sides are provided with recycle oil bath water mouth and pressure cap, pressure cap connects Triple Valve with High Pressure, pressure cap is connected to the core with core support by high pressure capillary in UHV (ultra-high voltage) chamber body, on the side cover of the both sides of core, be provided with sapphire glass, sapphire glass and side cover junction are provided with polytetrafluoro O-ring seal group, polytetrafluoro O-ring seal and PEEK O-ring seal, are also provided with temperature sensor in UHV (ultra-high voltage) chamber body.
Further, as shown in Figure 4, described crude oil heating cavity, its composition structure comprises: recycle oil bath water mouth, circulating heat conduction oil circulation cavity, chamber body, pressure cap, temperature sensor, in chamber body, cross high pressure capillary and there is pressure cap at two ends, in chamber body, there is temperature sensor, in chamber body, be provided with circulating heat conduction oil circulation cavity, on circulating heat conduction oil circulation cavity, be provided with two recycle oil bath water mouths.
Electric control box, comprises stepper motor driver, motion control card, control circuit for light source etc., in order to controlling motion control machinery that normal condition test contact angle needs, light-source brightness, with computing machine by the communication of USB2.0 communication interface; LED source of parallel light 2, realizes bias light function, is realized the high-resolution of drop profile is caught simultaneously by the singularity of directional light; UHV (ultra-high voltage) and high temperature test cavity 3, in order to form a simulated environment; Syringe pump and control structure thereof, in order to the contact angle under normal condition and interfacial tension measured value; Telecentric lens 5, for realizing micro-image observation, and utilizes the directional light characteristic of telecentric lens, forms the high-definition image imaging of sub-pixel; Video camera 6, realizes picture catching to the interior function of computing machine; Two-dimensional level is adjusted platform 7, realizes the horizontal adjustment function to different flatness sample surfaces; The four-dimensional optical translation platform 8 of XYZR, for completing the measured value of roll angle and sample surfaces diverse location point contact angle; UHV (ultra-high voltage) and high temperature test cavity 3 are dismountable; Syringe pump and control structure 4 thereof can be overturn, and in the time of conventional contact angle test and interfacial tension test, high-pressure chamber is pulled down, and syringe pump and control structure thereof are overturn, and can realize conventional measured value; And as while needing contact angle under testing high voltage condition and interfacial tension value, syringe pump and control structure thereof are overturn, load onto high-pressure chamber.
Form the loop of two superchargings, fluid injection, exhaust, be divided into two class situations: one, at crude oil during as the test of liquid phase, because crude oil is light tight, and relative aqueous systems, it is low-density phase, so, highdensity water is first injected in first loop conventionally, and the heating of reinjecting reduces the former oil phase after viscosity, now, former oil phase injects from lower end, forms the hanging drop shape of a reversion; Two, in the time that conventionally low-density is transparency liquid mutually (as benzene-aqueous systems), first form the loop of a low-density phase, the high density of reinjecting phase, common highdensityly inject from upper end, forms a hanging drop shape (Pendant drop).In the time of test contact angle, with as above scheme is identical, when crude oil, oil phase floats over the lower surface of solid-like, forms a bubble and drips (captive bubble); In the second situation time, high density is parked in solid-like upper surface mutually, forms one and stops dripping (sessile drop).
The connection embodiment in first loop is as follows, by respectively a screw on high pressure capillary 15 adopt capillary seal mode to seal up kapillary of Triple Valve with High Pressure 17 two ends; In the middle of lower end kapillary top part re-use a pressure cap and use capillary seal mode by capillary seal the upper section in chamber, meanwhile, lower end capillaceous enters cavity part and exposes about 1-2mm, uses to form hanging drop; Accompanying drawing 2-17 Triple Valve with High Pressure side part pointed has connected a blowdown valve 20 and a high pressure valve 19, and the former is decompression protection in the time that pressure is greater than threshold value, and the latter is for the gas in emptying cavity; Top one side (as shown in Figure 2) of accompanying drawing 2-17 T-valve pointed connects high pressure capillary, and this kapillary is connected with another Triple Valve with High Pressure 14; Triple Valve with High Pressure 14 one end Bonding pressure sensor or tensimeters, data can be communicated by letter with computer bidirectional by RS485 communications protocol, and one end connects a high-pressure booster 13; High-pressure booster 13 tops are equipped with a high pressure valve 11 and are sealed by the sealing means described in accompanying drawing 5 with a liquid storage pool 12; By rotating supercharge pump handle, can increase liquid in cavity or pump or the pressure of gas.
The embodiment in second loop is as follows: the below of UHV (ultra-high voltage) and the high temperature cavity high pressure two-way valve 22 that is tightly connected; After this two-way valve and a crude oil heating cavity 23 connect by sealing means described in a high pressure capillary employing accompanying drawing 7, be connected with a Triple Valve with High Pressure by high pressure capillary 24, this Triple Valve with High Pressure has connected pressure transducer and another high-pressure booster 25 again.
A temperature sensor and two are housed for connecting the rapid-acting coupling of circulation oil bath on UHV (ultra-high voltage) and high temperature cavity, for temperature control displays temperature, temperature sensor is by RS485 communications protocol and computer realization two-way communication.
The embodiment of exhaust:
(1) move supercharge pump to ragged edge; Open the pressure cap at heating crude oil cavity two ends, in cavity inner tube, inject crude oil; In the cistern of the supercharge pump in second circuit system, inject the aqueous phase liquid identical with first loop; Open the valve of second supercharge pump cistern below and the valve 22 of high-pressure chamber below, allow water flow in the pump housing; Close the valve of supercharge pump upper reservoir below, rotate supercharge pump handle, give second servo loop supercharging, until oil phase is from sight in cavity; Close the valve 22 of high-pressure chamber below.
(2) inject water to the supercharge pump cistern in first loop; Open valve 11, allow water flow into; Close Fig. 3-19 drain tap and Fig. 3-11 cistern below valve; Rotate the handle of supercharge pump 13, be pressurized to certain pressure to first loop, as 10Mpa; Open Fig. 3-19 drain tap; Gas can be discharged cavity; Repeatedly exhaust, until gas is all discharged.
The implementation that adopts this device to form drop and test contact angle:
Mainly be divided into three kinds of situations:
The first, test fluid-gas-solid three-phase system has the contact angle value under pressure and temperature condition:
(1) open sapphire view window; (2) on core support, put tested solids, size should meet the requirements; (3) dress support installs in cavity, and reinstalls sapphire view window; (4) use second loop to be pressurized to desired value to cavity; (5) use first loop, inject after water, give first loop supercharging, pressure, a little more than second loop, drips to solid surface in the mode that freely falls to dripping by drop.The drop now forming is the impact that is subject to gravity, and its contour curve meets Young-Laplace equation, only has test mode (as tdescribed in embodiment 1) described in this patent can complete the high precision measured value of such contact angle.(6), in whole test process, be desired value by the temperature of the circulator bath hierarchy of control.
The second, test fluid-liquid-solid three-phase system has the contact angle value under the temperature conditions of pressure, and has one mutually for having viscosity or opaque sample like crude oil class:
(1) open sapphire view window; (2) on core support, put tested solids, size should meet the requirements; (3) dress support installs in cavity, and reinstalls sapphire view window; (4) use first loop, inject after water, give first loop supercharging; Etc. (5) after former oil sample heating and viscosity, give second loop supercharging, and make pressure a little more than first loop, thereby drop can depart from kapillary, floats over the lower surface of tested solid, forms a bubble to drip (captive bubble); The drop now forming is the impact that is subject to gravity, and its contour curve meets Young-Laplace equation, only has test mode (as described in Example 1) described in this patent can complete the high precision measured value of such contact angle.(6), in whole test process, be desired value by the temperature of the circulator bath hierarchy of control.
Three, test fluid-liquid-solid three-phase system has the contact angle value under the temperature conditions of pressure, and low-density is transparent liquid mutually, basic identical when embodiment now and the first situation.
Adopt this device to form the implementation of drop test interface tension value:
Mainly be divided into three kinds of situations:
The first, test fluid-gas two-phase phase system has the contact angle value under pressure and temperature condition:
(1) use second loop to be pressurized to desired value to the pressure of cavity gas; (2) use first loop, inject after water, give first loop supercharging, pressure is a little more than second loop, when drop forms when hanging drop at syringe needle, stop supercharging, the drop now forming is the impact that is subject to gravity, its contour curve meets Young-Laplace equation, only has test mode (as tdescribed in embodiment 1) described in this patent can complete the high precision measured value of such interfacial tension.(3), in whole test process, be desired value by the temperature of the circulator bath hierarchy of control.
The second, test fluid-liquid two-phase system has the contact angle value under the temperature conditions of pressure, and has one mutually for having viscosity or opaque sample like crude oil class:
(1) use first loop, inject after water, give first loop supercharging; Etc. (2) after former oil sample heating and viscosity, give second loop supercharging, and make pressure a little more than first loop, in the time forming the hanging drop of a reversion, stop supercharging; The drop now forming is the impact that is subject to gravity, and its contour curve meets Young-Laplace equation, only has test mode (as tdescribed in embodiment 1) described in this patent can complete the high precision measured value of such interfacial tension.(6), in whole test process, be desired value by the temperature of the circulator bath hierarchy of control.Meanwhile, use image inversion to calculate in when test, to complete analysis image and to adopt the test of heuristics interfacial tension of this patent.
Three, test fluid-liquid two-phase system has the contact angle value under the temperature conditions of pressure, and low-density is transparent liquid mutually, basic identical when embodiment now and the first situation.
This patent novelty has proposed a kind of for solving interfacial tension and the contact angle proving installation under UHV (ultra-high voltage) and temperature control condition, comprise that two UHV (ultra-high voltage) increase the UHV (ultra-high voltage) of pumps (top pressure 100Mpa, even higher), a bilateral view window of being made up of sapphire glass and high temperature cavity, high viscosity samples heating bath, high pressure connection fittings (three-way valve, high pressure capillary), video camera and source of parallel light with telecentric lens forms.By taking after the contour images of drop, adopt the test of matching Young-Laplace equation to obtain contact angle and interfacial tension value, this device can be analyzed contact angle and the interfacial tension value etc. in different pressures situation, in oil field, the field such as petrochemical industry, new material research has extremely wide promotional value, especially in tertiary oil recovery simulated experiment, by simulation gather environment actual pressure and temperature conditions and and then measured value interfacial tension and contact angle value, these apparatus and method are very effective.
Claims (6)
1. under UHV (ultra-high voltage), high temperature, test the proving installation of contact angle and interfacial tension, mainly comprise: frame, electric control box, LED source of parallel light, UHV (ultra-high voltage) and high temperature test cavity, syringe pump and control structure thereof, telecentric lens, video camera, two-dimensional level is adjusted platform, the four-dimensional optical translation platform of XYZR, four horizontal adjustment pin; UHV (ultra-high voltage) and high temperature test cavity are dismountable; Syringe pump and control structure thereof can be overturn, electric control box is arranged at frame one side, on the support of frame opposite side, be provided with video camera and syringe pump and control structure thereof, on video camera, be connected with telecentric lens, electric control box side is connected with LED source of parallel light, it is characterized in that, on the bracing frame of central rack, be provided with the four-dimensional optical translation platform of XYZR, on the four-dimensional optical translation platform of XYZR, be provided with two-dimensional level and adjust platform, two-dimensional level is adjusted on platform and is provided with dismountable UHV (ultra-high voltage) and high temperature test cavity.
2. the proving installation of testing contact angle and interfacial tension under UHV (ultra-high voltage) according to claim 1, high temperature, is characterized in that, described UHV (ultra-high voltage) and high temperature test cavity, comprise: high-pressure sensor or tensimeter, high pressure valve, liquid storage pool, supercharge pump, Triple Valve with High Pressure, high pressure capillary, pressure cap, UHV (ultra-high voltage) and high temperature cavity, blowdown valve, waste liquid pool, crude oil heating cavity, UHV (ultra-high voltage) and high temperature cavity one end connect 2 high pressure capillaries by Triple Valve with High Pressure and pressure cap, a high pressure capillary is attached to Triple Valve with High Pressure, on Triple Valve with High Pressure, be connected with high-pressure sensor or tensimeter and supercharge pump, on supercharge pump, be connected with liquid storage pool by high pressure valve, another high pressure capillary connects successively blowdown valve and is connected waste liquid pool with after high pressure valve, UHV (ultra-high voltage) and the high temperature cavity other end are connected to supercharge pump through high pressure capillary after connecting crude oil heating cavity by Triple Valve with High Pressure, on supercharge pump, be connected with liquid storage pool by high pressure valve, on the Triple Valve with High Pressure of supercharge pump end, be connected with high-pressure sensor or tensimeter.
3. the proving installation of testing contact angle and interfacial tension under UHV (ultra-high voltage) according to claim 2, high temperature, is characterized in that, described UHV (ultra-high voltage) and high temperature cavity, and inner structure is symmetric design, its composition structure comprises; Recycle oil bath water mouth, Triple Valve with High Pressure, pressure cap, circulating heat conduction oil circulation cavity, lock screw, high pressure capillary, temperature sensor, sapphire glass, side cover, sapphire glass, polytetrafluoro O-ring seal group, core, polytetrafluoro O-ring seal, core support, UHV (ultra-high voltage) chamber body; In UHV (ultra-high voltage) chamber body, connect side cover by lock screw, UHV (ultra-high voltage) chamber body both sides are provided with recycle oil bath water mouth and pressure cap, pressure cap connects Triple Valve with High Pressure, pressure cap is connected to the core with core support by high pressure capillary in UHV (ultra-high voltage) chamber body, on the side cover of the both sides of core, be provided with sapphire glass, sapphire glass and side cover junction are provided with polytetrafluoro O-ring seal group, polytetrafluoro O-ring seal and PEEK O-ring seal, are also provided with temperature sensor in UHV (ultra-high voltage) chamber body.
4. under UHV (ultra-high voltage) according to claim 2, high temperature, test the proving installation of contact angle and interfacial tension, it is characterized in that, described crude oil heating cavity, its composition structure comprises: recycle oil bath water mouth, circulating heat conduction oil circulation cavity, chamber body, pressure cap, temperature sensor, in chamber body, cross high pressure capillary and there is pressure cap at two ends, in chamber body, there is temperature sensor, in chamber body, be provided with circulating heat conduction oil circulation cavity, on circulating heat conduction oil circulation cavity, be provided with two recycle oil bath water mouths.
5. the proving installation of testing contact angle and interfacial tension under UHV (ultra-high voltage) according to claim 1, high temperature, is characterized in that,
Hermetically-sealed construction while connection between described pressure cap or parts, adopts female mouthful of chamfering of connecting structure and male mouthful of chamfering sealing of connecting structure without high pressure capillary place, more stubborn tighter in rundown process; There is high pressure capillary place, when sealing, adopt equally the structure that chamfering is different, increase the pressure ring of a both sides chamfering structure simultaneously.
6. the proving installation of testing contact angle and interfacial tension under UHV (ultra-high voltage) according to claim 1, high temperature, is characterized in that, temperature sensor or tensimeter are by RS485 communications protocol and computer realization two-way communication.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865167A (en) * | 2015-05-14 | 2015-08-26 | 上海梭伦信息科技有限公司 | High-speed controllable temperature dynamic interfacial tension meter and test method |
| CN105203432A (en) * | 2014-06-16 | 2015-12-30 | 上海梭伦信息科技有限公司 | Device and method for testing contact angle and interfacial tension at ultrahigh pressure and high temperature |
| CN105334139A (en) * | 2015-11-25 | 2016-02-17 | 华南理工大学 | Instrument and method for measuring contact angle between saturated liquid and solid surface |
-
2013
- 2013-12-05 CN CN201320792134.2U patent/CN203672749U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203432A (en) * | 2014-06-16 | 2015-12-30 | 上海梭伦信息科技有限公司 | Device and method for testing contact angle and interfacial tension at ultrahigh pressure and high temperature |
| CN104865167A (en) * | 2015-05-14 | 2015-08-26 | 上海梭伦信息科技有限公司 | High-speed controllable temperature dynamic interfacial tension meter and test method |
| CN105334139A (en) * | 2015-11-25 | 2016-02-17 | 华南理工大学 | Instrument and method for measuring contact angle between saturated liquid and solid surface |
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