CN105842138B - A kind of mercury column interface automatic regulating system and rock core pore structure analyzer - Google Patents
A kind of mercury column interface automatic regulating system and rock core pore structure analyzer Download PDFInfo
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- CN105842138B CN105842138B CN201610180255.XA CN201610180255A CN105842138B CN 105842138 B CN105842138 B CN 105842138B CN 201610180255 A CN201610180255 A CN 201610180255A CN 105842138 B CN105842138 B CN 105842138B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
- G01N15/0893—Investigating volume, surface area, size or distribution of pores; Porosimetry by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
Abstract
The present invention provides a kind of mercury column interface automatic regulating systems, including atmospheric pressure meter, capture card, PLC controller, jacking system, mercury cup, mercury column and core holding unit, the atmospheric pressure meter, capture card, PLC controller and jacking system are sequentially connected in series electrical connection, the mercury cup is located at the upper end of jacking system, the mercury cup is fixedly connected with jacking system, and the mercury column is connected to mercury cup.Using the rock core pore structure analyzer of the mercury column interface automatic regulating system, including pressure test device, into pressure device, pressure measurement device and rock core apparatus for placing, it the pressure test device and is connect into pressure device by pipeline with pressure measurement device, the rock core apparatus for placing passes through pipeline and connect with pressure measurement device.The present invention measures core porosity and eliminates influence of the atmospheric pressure difference to measurement result, and measurement accuracy is high, and error is small.
Description
Technical field
The present invention relates to rock core structure of the detecting device design field more particularly to a kind of mercury column interface automatic adjustment systems
System and rock core pore structure analyzer.
Background technique
Traditional core porosity measurement generallys use the method that water logging, boiling and other chemical solvents immerse, measurement
Precision is low, and the period is long, and the minimum rock core of especially some porositys also has then since liquid tension cannot achieve measurement using three
Dimension imaging technique is measured, however its higher cost does not have wide applicability.Also there is rock core hole knot in the prior art
Structure analyzer using gravitational difference principle be measured but due to its it is internal using liquid mercury as internal standard, and the height of mercury column
Can all be changed due to atmospheric pressure with region, season, weather etc., influence whether the result of measurement.
Such as under a kind of simple stress disclosed in Chinese patent CN102252949A loose core porosity determination method,
This method controls core axis pressure and confining pressure by two high-pressure pumps respectively, guarantees effectively to seal between rock sample and rubber sleeve inner wall,
It is derived with the biaxial stress porosity of pore bridging measurement rock core then according to the mathematical model of experimental physics model foundation
The relational expression of porosity of the rock core under the porosity and biaxial stress under simple stress, finally obtains rock core under simple stress
Porosity.This method is difficult to ensure that the pressure of equipment is absolute pressure in implementation process, often makes the relative pressure to be
Negative pressure, so as to cause the error of testing result.
In another example a kind of instrument for measuring solid porosity disclosed in Chinese patent CN1388356, is to have used gas shape
State equation, the method for taking gas mobile, by accurately measuring solid volume, and then easily determines the hole of various solids
Porosity, being capable of porosity that is easy, quickly and accurately determining various specifications, shaped solids.The present invention is by sample room 3, expansion
Room 4, connecting pipe 5, pressure sensor 6, measuring circuit 7, triple valve 8,9,10, vacuum pump 11, storage cylinder 12, filter 13,
Gas source 14 forms.The instrument measures volume by the mobile method of gas, since gas volume can be with the environment temperature of surrounding
Error is caused to increase etc. the result that will affect measurement that changes, because without wide applicability.
Summary of the invention
To overcome core porosity measurement device evaluated error existing in the prior art big, the lower problem of applicability,
The present invention provides a kind of mercury column interface automatic regulating system and rock core pore structure analyzers.
A kind of mercury column interface automatic regulating system, including atmospheric pressure meter, capture card, PLC controller, jacking system and mercury
Cup, the atmospheric pressure meter, capture card, PLC controller and jacking system are sequentially connected in series electrical connection, and the mercury cup is located at lifting system
The upper end of system, the mercury cup are fixedly connected with jacking system.
Further, the jacking system includes servo motor, elevating screw and turbine box, the servo motor and turbine
Case is laterally fixedly connected, and the elevating screw is fixedly connected with turbine box vertical direction, the upper end of the elevating screw and mercury cup
It is fixedly connected.
Further, the lower end of the turbine box is provided with guide plate and is connected and fixed the bracket of device, the bracket
Upper end is fixedly connected with turbine box, and the guide plate is fixedly connected with bracket.
Further, the lower end of the mercury cup is provided with mercury cup pillar, the two sides up and down of the mercury cup pillar respectively with mercury
Cup is fixedly connected with jacking system, and the bottom of the mercury cup is connect by hose with mercury valve is mended.
It is a further object to provide a kind of rock core holes using the mercury column interface automatic regulating system
Structure determination instrument, including pressure test device, into pressure device, pressure measurement device and rock core apparatus for placing, the air pressure detection
Device and connect into pressure device by pipeline with pressure measurement device, the rock core apparatus for placing passes through pipeline and pressure measurement dress
Set connection.
Further, the pressure measurement device includes mercury stereometer buret a, differential pressure pick-up a, isolating valve a and rock core
Room valve a, mercury column interface automatic regulating system and benefit mercury valve, core chamber's valve a are connect with benefit mercury valve by pipeline, the mercury body
The product lower end gauge line a is connect by pipeline with core chamber valve a with the middle position for mending mercury valve, and the isolating valve a is located at mercury volume
The upper end of gauge line a is simultaneously connect with mercury stereometer buret a by pipeline, and the differential pressure pick-up a is located at mercury stereometer buret a's
Side is simultaneously firmly connected with it, and the differential pressure pick-up a is connected with the lower end of isolating valve a；The upper end of core chamber's valve a with
Rock core apparatus for placing is fixedly connected, and the isolating valve a is connect by pipeline with pressure test device and into pressure device.
Further, the lower end of the mercury stereometer buret a is provided with blow valve, the blow valve and mercury stereometer buret
A is fixedly connected.
Further, the pressure test device includes pressure sensor c and pressure sensor, the pressure sensor c
It is connected separately with pressure gauge c and pressure gauge d with pressure sensor, the pressure sensor c and pressure sensor are arranged in parallel simultaneously
By piping connection, the position among the pressure sensor c and pressure sensor is provided with high-pressure solenoid valve c and high pressure hand-operated
Valve c, the high-pressure solenoid valve c and high pressure hand-operated valve c are connected in series.
Further, the rock core apparatus for placing includes vacuum pump and core chamber a, and the vacuum pump and core chamber a pass through
Piping connection, the upper end the core chamber a are provided with evacuation valve, and the evacuation valve is fixedly connected with core chamber a.
Further, the pressure test device and into being provided with gas in the connecting tube of pressure device and pressure measurement device
Trap.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) mercury column interface automatic regulating system of the invention measures atmospheric pressure by atmospheric pressure meter, and passes through capture card
It is operated with PLC controller control servo motor, and moves up and down to drive mercury by the straight line that turbine box becomes elevating screw
Cup moves up and down to be realized that automatic benefit mercury ensures mercury pressure not and is influenced by change of atmospheric pressure to adjust the height in mercury face.
(2) rock core pore structure analyzer of the invention is by mercury column interface automatic regulating system come according to reality when measuring
Border atmospheric value adjust keep rock core indoor top be higher than in mercury cubing pipe and in mercury supplementing cup initial mercury face height, from
And the height in continuous mode is made to be absolute altitude, to guarantee the accuracy of measurement result, so that the error of measurement is small.
(3) rock core pore structure analyzer of the invention realizes automatic addition alcohol by alcohol cup and into pressure device, subtracts
Lack artificial addition alcohol bring mercury volatilization, avoids mercury volatilization bring harm, and reduce waste.
(4) mercury in mercury supplementing cup of the invention is closed using alcohol, reduces the volatilization of mercury, and using transparent
For plexiglass cover on mercury supplementing cup, the situation in mercury supplementing cup, which can either can be clearly seen, again can prevent mercury volatilization to scatter and disappear, it is ensured that
The safety of tester, and reduce waste.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of mercury column interface automatic regulating system of the invention；
Fig. 2 is the structural schematic diagram of rock core pore structure analyzer of the invention.
Specific embodiment
Below in conjunction with drawings and examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific examples are only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1
Present embodiment discloses a kind of mercury column interface automatic regulating system, such as Fig. 1, including atmospheric pressure meter 42,
Capture card 43, PLC controller 44, jacking system 45 and mercury cup 49, atmospheric pressure meter 42, capture card 43, PLC controller 44 and liter
Drop system 45 is sequentially connected in series electrical connection, and mercury cup 49 is located at the upper end of jacking system 45, and mercury cup 49 and jacking system 45 pass through screw
It is fixedly connected.Mercury cup 49 is connected with mercury column 54 by hose, and mercury column 54 can also connect core holding unit as simple hole
Porosity analyzer.Wherein, it is preferred that atmospheric pressure meter 42 uses digital display atmospheric pressure meter, can clearly read atmospheric pressure
Value facilitates operator to obtain atmospheric pressure environment.
Specifically, as shown in Figure 1, jacking system 45 includes servo motor 46, elevating screw 47 and turbine box 48, servo
Motor 46 is laterally fixedly connected with turbine box 48, and elevating screw 47 is fixedly connected with 48 vertical direction of turbine box, elevating screw 47
Upper end be fixedly connected with mercury cup 49 by screw.The rotation of servo motor 46 becomes the straight line of elevating screw 47 by turbine box 48
It moves up and down that mercury cup 49 is driven to move up and down to adjust the height in mercury face.10 circle of the rotation of servo motor 46 will drive lifting silk
Thick stick 47 moves up and down 1 millimeter or so.The upper and lower movable range of mercury cup 49 is 120 millimeters.Preferably, under turbine box 48
End is provided with guide plate 481 and is connected and fixed the bracket 482 of device, and upper end and the turbine box 48 of bracket 482 are fixed by screw
Connection, guide plate 481 are fixedly connected with bracket 482 by screw.
As shown in Figure 1, the lower end of mercury cup 49 is provided with mercury cup pillar 491, the two sides up and down of mercury cup pillar 491 respectively with mercury
Cup 49 is fixedly connected with jacking system 45 by screw, and the bottom of mercury cup 49 is connect by hose 493 with mercury valve 33 is mended.It is preferred that
, mercury cup 49 is process by stainless steel, and mercury cup pillar 49 is provided with mercury recirculation hole below, and the mercury in mercury cup 49 can be by this
The mercury of hole outflow, outflow is connected by hose 493 with mercury valve 33 is mended；Preferably, hose 493 is transparent hose, and is used
Soft tubular lock set fastening.Preferably, mercury cup 49 can also include mercury cup lid, and mercury cup lid is made of organic glass, can pass through
Mercury cup lid sees the case where mercury inside mercury cup 49, and can effectively prevent mercury volatilization.The height of mercury solution is not in mercury cup 49
More than the half of 49 height of mercury cup, to be closed on mercury face plus part alcohol after installing mercury, to prevent the volatilization of mercury,
Alcohol thickness is greater than 10 millimeters, if it find that alcohol is evaporated completely or is added when very little.
The working principle of this specific embodiment:：When reducing mercury column liquid level, by the numerical values recited of atmospheric pressure meter
It judges automatically, is rotated forward by control servo motor 46 and mercury cup 49 is driven to move down, so that mercury column liquid level reduces.?
It when increasing mercury column liquid level, is judged automatically by the numerical values recited of atmospheric pressure meter, is rotated forward by control servo motor and drive mercury
Cup 49 moves up, so that mercury column liquid level rises；
It can make to control speed by servo motor 46, position precision is very accurate, can convert torque for voltage signal
With revolving speed with drive control object.46 rotor speed of servo motor is controlled by input signal, and energy fast reaction, is being automatically controlled
In system, it is used as executive component, and there are the characteristics such as electromechanical time constant small, the linearity is high, pickup voltage, it can be being received
Electric signal is converted into angular displacement or angular speed output on motor reel.
Embodiment 2
Present embodiment discloses a kind of rock core pore structure analyzer, such as Fig. 2, including pressure test device 50,
Pass through pipeline into pressure device 51, pressure measurement device 52 and rock core apparatus for placing 53, pressure test device 50 and into pressure device 51
It is connect with pressure measurement device 52, rock core apparatus for placing 53 is connect by pipeline with pressure measurement device 52.Preferably, air pressure is examined
Survey device 50 and into being provided with gas trap 41 in the connecting tube of pressure device 51 and pressure measurement device 52.
As shown in Fig. 2, pressure test device 50 include pressure sensor c7 and pressure sensor 8, pressure sensor c7 and
Pressure sensor 8 is connected separately with pressure gauge c3 and pressure gauge d4, and pressure sensor c7 and pressure sensor 8 are arranged in parallel and lead to
Piping connection is crossed, the position of 8 centre pressure sensor c7 and pressure sensor is provided with high-pressure solenoid valve c15 and high pressure hand-operated valve
C18, high-pressure solenoid valve c15 and high pressure hand-operated valve c18 are connected in series.It preferably, can also include multiple pressure sensors, this
It further include pressure sensor a5 and pressure sensor b6 in specific embodiment, pressure sensor a5 and pressure sensor b6 distinguish
It is connected with pressure gauge a1 and pressure gauge b2, pressure sensor a5 and pressure sensor b6 are connected on pipeline；Pressure sensor a5
Be connected with high-pressure solenoid valve a13 and high pressure hand-operated valve a16 on pipeline between pressure sensor b6, high-pressure solenoid valve a13 and
High pressure hand-operated valve a16 is fixedly connected with pipeline by pipe joint；Pipeline between pressure sensor b6 and pressure sensor c7
On be fixedly connected with high-pressure solenoid valve b14 and high pressure hand-operated valve b18.Wherein the reading of pressure sensor 8 and pressure gauge d4 are made
For the foundation initially adjusted, and pressure sensor c7, pressure sensor a5 and pressure sensor b6 and its corresponding pressure gauge are then
For measure move back pressure and into pressure situation.
In addition, as shown in Fig. 2, into pressure device 51 include high-pressure plunger pump 28 and alcohol cup 30, before high-pressure plunger pump 28
End is provided with high pressure pump valve 26 and is connected by pipeline with pressure measurement device 52.Preferably, high-pressure plunger pump 28 is fixed connects
It is connected to stepper motor 29, drives high-pressure plunger pump 28 to carry out to pressure by stepper motor 29.Alcohol cup 30 and high-pressure plunger pump 28
It is connected by hose, and is provided with the on-off of liquid feed valve control feed liquor on hose.
In addition, as shown in Fig. 2, pressure measurement device 52 includes mercury stereometer buret a22, differential pressure pick-up a24, isolation
Valve a19 and core chamber valve a31, mercury column interface automatic regulating system 21 and benefit mercury valve 33, core chamber valve a31 pass through with mercury valve 33 is mended
Pipeline connection, the mercury stereometer lower end buret a22 are connect by pipeline with core chamber valve a31 with the middle position for mending mercury valve 33, every
It is located at the upper end of mercury stereometer buret a22 from valve a19 and is connect with mercury stereometer buret a22 by pipeline, differential pressure pick-up a24
Positioned at mercury stereometer buret a22 side and be firmly connected with it, differential pressure pick-up a24 is connected with the lower end of isolating valve a19
It connects；The upper end of core chamber valve a31 is fixedly connected with rock core apparatus for placing 53 by pipeline, and isolating valve a19 passes through pipeline and air pressure
It detection device 50 and is connected into pressure device 51, core chamber valve a31 connect with core chamber a11 by pipeline.And preferably,
It is solid by conduit coupling that the lower end of mercury stereometer buret a22 is provided with blow valve 35, blow valve 35 and mercury stereometer buret a22
Fixed connection.
Preferably, pressure measurement device 52 may include multiple mercury stereometer burets, in this embodiment also
Including another mercury stereometer buret b23, further include accordingly differential pressure pick-up b25, isolating valve b20 and core chamber valve b32 and
Mercury valve b34 is mended, mercury valve b34 is mended and is connected in parallel with mercury valve 33 is mended, core chamber valve b32 is connected with benefit mercury valve b34 by pipeline,
The lower end of mercury stereometer buret b23 is connect by pipeline with core chamber valve b32 with the middle position for mending mercury valve b34, differential pressure sensing
The lower end of device b25 connection mercury stereometer buret b23 and the isolating valve b20, isolating valve b20 and isolating valve a19 of the upper end pass through pipe
Road is connected in parallel, core chamber valve b32 connection core chamber b12.Preferably, the lower end of mercury stereometer buret b23 is provided with blow valve
B36 is simultaneously fixedly connected with it by conduit coupling.
In addition, rock core apparatus for placing 53 includes vacuum pump 40 and core chamber a11, vacuum pump 40 and core chamber a11 pass through pipe
Road connection, the upper end core chamber a11 are provided with evacuation valve 9, and evacuation valve 9 is fixedly connected with core chamber a11 by conduit coupling.It is excellent
Choosing, vacuum pump 40 is provided with vacuum meter 37, vacuum vent valve 38 and vacuum pump valve 39, and vacuum meter 37 determines its vacuum degree, very
For empty blow valve 38 for being vented, vacuum pump valve 39 is used to cut off the on-off of vacuum pump 37 Yu core chamber.
It preferably, also may include multiple core chamber, wherein core chamber matches use with mercury stereometer buret, this is specific real
Applying in example further includes another core chamber b12, and core chamber b12 is connect with core chamber valve b32, and preferred core chamber valve b32
It is connected in parallel with core chamber a11 by pipeline；It is logical that core chamber b12 is connected with evacuation valve b10, evacuation valve b10 and core chamber b12
Piping connector is fixedly connected.Multiple core chamber, which are arranged, can carry out multiple groups measurement, improve work efficiency.
The workflow of present embodiment：Tested rock sample is first packed into core chamber a11 and core chamber b12, is then beaten
Evacuation valve a9, the evacuation valve b10 above core chamber a11 and core chamber b12 are opened, core chamber valve a31, rock below core chamber are closed
Ventricle valve b32 opens and mends mercury valve 33, mends mercury valve b34, open vacuum pump valve 39, close vacuum vent valve 38, connects vacuum pump
40 power supply vacuumizes, 15~after twenty minutes, open core chamber's valve a31, core chamber valve b32, mercury column interface automatic regulating system
Mercury in 21 will enter core chamber a11 and core chamber b12 under atmospheric pressure, adjust mercury column interface automatic regulating system 21
Make the comparable mercury value of atm difference of difference in height at that time at the top of initial mercury face position therein and core chamber.It is then shut off pumping
Empty valve a9, evacuation valve b10 close vacuum pump 40, open vacuum pump blow valve 38.Mercury stereometer buret a22, mercury stereometer buret
Initial mercury face in b23 can control the advance and retreat of high-pressure plunger pump 28 using microcomputer to adjust, and the foundation of adjusting is pressure sensor 8
And the reading of pressure gauge 4, it opens and is mounted on pressure sensor a5, sensor b6, sensor c7, the high pressure between sensor a
Solenoid valve a13, high-pressure solenoid valve b14, high-pressure solenoid valve c15 and high pressure hand-operated valve a16, high pressure hand-operated valve b17, high pressure hand
Dynamic valve c18 is closed when the reading of adjusting to pressure sensor 8 is zero and is mended mercury valve 33, mends mercury valve b34.Then microcomputer can be utilized
Control high-pressure plunger pump 28 carries out pressure mercury and mercury ejection works.At this moment, when pressure sensor 8 measures mercury stereometer buret a22 and mercury
Pressure when pressure in stereometer buret b23 at initial mercury face is relative pressure zero, at the top of core chamber a11 and core chamber b12
It is absolute pressure zero.It can guarantee that pressure measurement all carries out under positive pressure in this way, moreover, working as pressure sensor 8 when mercury ejection
When retreating to relative pressure zero, core chamber a11 and core chamber's b12 top pressure can retreat to absolute pressure zero, ensure that mercury ejection song
The integrality of line.Due to the improvement in structure but also all tests carry out in a core chamber, the course of work ensure that
Integrality.Real atmosphere pressure when according to measurement automatically adjusts the mercury face of mercury cup 49 to the height of core holding unit input end
Degree.It may insure the difference in height that interface and core holding unit input end in mercury cup are kept constant, so that measurement result is more
It is accurate to add.
The working principle of this specific embodiment：Rock core pore structure analyzer is measured using gravitational difference principle, rock core
Indoor top is higher than in mercury cubing pipe and the specific height in one, initial mercury face in mercury supplementing cup, this is highly equal to instrument
The numerical value H of the atmospheric pressure indicated with height of mercury in location when use.Since atmospheric pressure all can with region, season, weather etc.
It changes, therefore H can change with the change of atmospheric pressure, the present invention can be realized to be allowed to according to atmospheric pressure automatic adjustment H
It can be consistent with atmospheric pressure when experiment.Mercury supplementing cup bottom is connected by pipeline valve, and after mutual valve is opened, they are two-by-two
Between will form U-shaped connection, pass through adjust mercury supplementing cup height, so that it may initial mercury in regulation and control mercury cubing pipe
Face guarantees the H in instrument location when the difference in height at the top of initial mercury face and core chamber is equal to experiment.
The preferred embodiment of the present invention has shown and described in above description, as previously described, it should be understood that the present invention is not office
Be limited to form disclosed herein, should not be regarded as an exclusion of other examples, and can be used for various other combinations, modification and
Environment, and can be changed within that scope of the inventive concept describe herein by the above teachings or related fields of technology or knowledge
It is dynamic.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, then it all should be appended by the present invention
In scope of protection of the claims.
Claims (9)
1. a kind of mercury column interface automatic regulating system, it is characterised in that：Including atmospheric pressure meter (42), capture card (43), PLC control
Device (44), jacking system (45) and mercury cup (49) processed, the atmospheric pressure meter (42), capture card (43), PLC controller (44) and
Jacking system (45) is sequentially connected in series electrical connection, and the mercury cup (49) is located at the upper end of jacking system (45), the mercury cup (49) with
Jacking system (45) is fixedly connected, and the jacking system (45) includes servo motor (46), elevating screw (47) and turbine box
(48), the servo motor (46) is laterally fixedly connected with turbine box (48), and the elevating screw (47) and turbine box (48) are perpendicular
To being fixedly connected, the upper end of the elevating screw (47) is fixedly connected histogram with mercury cup (49).
2. a kind of mercury column interface automatic regulating system according to claim 1, it is characterised in that：The turbine box (48)
Lower end is provided with guide plate (481) and is connected and fixed the bracket (482) of device, the upper end of the bracket (482) and turbine box
(48) it is fixedly connected, the guide plate (481) is fixedly connected with bracket (482).
3. a kind of mercury column interface automatic regulating system according to claim 1, it is characterised in that：Under the mercury cup (49)
End is provided with mercury cup pillar (491), the two sides up and down of the mercury cup pillar (491) respectively with mercury cup (49) and jacking system (45)
It is fixedly connected, the bottom of the mercury cup (49) is connect by hose (493) with mercury valve (33) are mended.
4. a kind of rock core pore structure analyzer using mercury column interface as described in claim 1 automatic regulating system, special
Sign is：Including pressure test device (50), into pressure device (51), pressure measurement device (52) and rock core apparatus for placing (53),
It the pressure test device (50) and is connect into pressure device (51) by pipeline with pressure measurement device (52), the rock core placement
Device (53) is connect by pipeline with pressure measurement device (52).
5. a kind of rock core pore structure analyzer according to claim 4, it is characterised in that：The pressure measurement device
It (52) include mercury stereometer buret a (22), differential pressure pick-up a (24), isolating valve a (19) and core chamber valve a (31), mercury column interface
Automatic regulating system (21) and benefit mercury valve (33), core chamber's valve a (31) are connect with benefit mercury valve (33) by pipeline, the mercury
(22) lower end stereometer buret a is connect by pipeline with core chamber valve a (31) with the middle position for mending mercury valve (33), the isolation
Valve a (19) is located at the upper end of mercury stereometer buret a (22) and is connect with mercury stereometer buret a (22) by pipeline, the differential pressure
Sensor a (24) is located at the side of mercury stereometer buret a (22) and is firmly connected with it, the differential pressure pick-up a (24) with every
Lower end from valve a (19) is connected；The upper end of core chamber's valve a (31) is fixedly connected with rock core apparatus for placing (53), described
Isolating valve a (19) is connect by pipeline with pressure test device (50) and into pressure device (51).
6. a kind of rock core pore structure analyzer according to claim 5, it is characterised in that：The mercury stereometer buret a
(22) lower end is provided with blow valve (35), and the blow valve (35) is fixedly connected with mercury stereometer buret a (22).
7. a kind of rock core pore structure analyzer according to claim 4, it is characterised in that：The pressure test device
It (50) include pressure sensor c (7) and pressure sensor (8), the pressure sensor c (7) and pressure sensor (8) connect respectively
It is connected to pressure gauge c (3) and pressure gauge d (4), the pressure sensor c (7) and pressure sensor (8) are arranged in parallel and pass through pipe
Road connects, and the position among the pressure sensor c (7) and pressure sensor (8) is provided with high-pressure solenoid valve c (15) and high pressure
Hand-operated valve c (18), the high-pressure solenoid valve c (15) and high pressure hand-operated valve c (18) are connected in series.
8. a kind of rock core pore structure analyzer according to claim 4, it is characterised in that：The rock core apparatus for placing
It (53) include vacuum pump (40) and core chamber a (11), the vacuum pump (40) and core chamber a (11) are described by piping connection
Core chamber a (11) upper end is provided with evacuation valve (9), and the evacuation valve (9) is fixedly connected with core chamber a (11).
9. a kind of rock core pore structure analyzer according to claim 4, it is characterised in that：The pressure test device
(50) and into being provided with gas trap (41) in the connecting tube of pressure device (51) and pressure measurement device (52).
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| CN112304841B (en) * | 2020-09-24 | 2023-04-25 | 中国石油大学(华东) | Rock pore structure simulation test system and simulation test method |
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