CN206114674U - Automatic change rock core displacement experimental apparatus - Google Patents
Automatic change rock core displacement experimental apparatus Download PDFInfo
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- CN206114674U CN206114674U CN201620834822.4U CN201620834822U CN206114674U CN 206114674 U CN206114674 U CN 206114674U CN 201620834822 U CN201620834822 U CN 201620834822U CN 206114674 U CN206114674 U CN 206114674U
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Abstract
The utility model relates to a be applied to an automatic change rock core displacement experimental apparatus in oil development field, mainly include: rock core displacement system, hydraulic control system and PLC control system. PLC control system effect lies in the method through the singlechip programming, controls the operating condition of the hydraulic pump among hydraulic pressure control system and the test device, electromagnetic type tribit four -way reversing valve, automatically controlled slide valve, automatically controlled cone valve to monitor and adjust the pressure in the system. The hydraulic control system effect lies in, through each hydraulic component's among the hydraulic control system cooperation, provides the working fluid of pressure with constant flow to the experimental system. The utility model discloses a rock core displacement laboratory automation is realized to mutually supporting between PLC control system, hydraulic pressure control system and the rock core displacement system, has the control accuracy height, and pressure, flow pulse are little, advantage that experiment safety is reliable.
Description
Technical field
The utility model is related to field of petroleum exploitation experimental study key equipment, and in particular to one kind automation rock core displacement
Experimental provision.
Background technology
In oil and gas development process, laboratory core displacement test is most basic work.With petroleum industry
Development, nontraditional reservoir is developed, while conventional water-drive pool also has been enter into high water-cut stage.Carry out for these characteristics of reservoirs
Rock core displacement test, difficulty is big, and the cycle is long.The rock core displacement control device for automating is needed in an experiment.
Existing rock core displacement test device mostly is manually operated rock core displacement test device, rarely has realization automation control
The rock core displacement test device of system.Manually operated rock core displacement test device generally uses nitrogen cylinder or jet method and rock core is driven
Pressure and working fluid are provided for process, nitrogen cylinder has the shortcomings that pressure transient, and the displacement pressure that jet method is provided is too small.
Manually operated rock core displacement test device is required to mix up pressure parameter in advance, and experimentation is difficult to change, and its is automatic
Change low degree.The rock core displacement test device of existing automation, only realizes the automation of rock core displacement system, its implementation
It is default device parameter preset, by detecting that parameter is processed parameter preset, according to result control instruction is sent,
Realize the control to presetting device.But it is only in that to the process for presetting device manometric three ranges, two pumps
Switching etc., its automaticity is limited.Additionally, existing artificial control at present is equal with the rock core displacement test device for automatically controlling
, easily there is pressure accident in feedback-less and self-protection function, affect experiment safety.
The content of the invention
The utility model is directed to the problems referred to above, there is provided a kind of full-automatic rock core displacement test control device, by PLC
Cooperating between control system, hydraulic control system and rock core displacement system, realizes that rock core displacement test is automated, and has
Control accuracy is high, and pressure, flow pulse are little, the reliable advantage of experiment safety.
The utility model is a kind of automation rock core displacement test device, by rock core displacement system, hydraulic control system and
PLC control system is constituted.Described rock core displacement system includes intermediate receptacle 25, pressure gauge 26, confined pressure pressure gauge 27, rock core folder
Holder 28, flow measurement device 29, automatically controlled cone valve 30 and fuel tank 31；Wherein, the upper end of intermediate receptacle 25 by hydraulic line and
Four-way is connected respectively with pressure gauge 26, automatically controlled cone valve 30 and core holding unit 28, and core holding unit 28 passes through hydraulic line
It is connected with flow measurement device 29, confined pressure pressure gauge 27 is threadedly attached on core holding unit, flow measurement device 29 leads to
Cross hydraulic line to be connected with fuel tank 31, automatically controlled cone valve 30 is connected by hydraulic line with fuel tank 31, the lower end of intermediate receptacle 25 leads to
Cross hydraulic line to be connected with hydraulic control system.
Hydraulic control system is divided into control loop and performance loop, including the first fuel tank 1, the second fuel tank 2, the first hydraulic pump
3 second hydraulic pumps 4, the first electromagnetic type three position four-way directional control valve (5), the second electromagnetic type three position four-way directional control valve (6), the first guide
Formula overflow valve (7), the second pilot operated compound relief valve (8), the 3rd pilot operated compound relief valve (9), the check valve of the first check valve (10) second
(11), the 3rd check valve (12), the 4th check valve (13), through-rod piston cylinder 14, the first automatically controlled slide valve 15, the second automatically controlled flashboard
Valve 16, the automatically controlled cone valve (18) of the first automatically controlled cone valve (17) second, the 3rd automatically controlled cone valve (19), accumulator 20, first are pressed
Power table (21) second pressure table (22) the 3rd pressure gauge (23), overflow valve 24.Wherein, the first fuel tank 1 and first in performance loop
Hydraulic pump 3 is connected by hydraulic line, the first hydraulic pump 3 by hydraulic line and threeway respectively with the first electromagnetic type 3-position 4-way
The oil-in connection of the oil-in 5a of reversal valve 5 and the first pilot operated compound relief valve 7, the oil-in of the first check valve 10 passes through hydraulic tube
Line is connected with the actuator port 5b of the first electromagnetic type three position four-way directional control valve 5, and the oil-out of the first check valve 10 passes through hydraulic tube
Line and threeway are connected respectively with the oil-in 14a of dual-rod hydraulic cylinder 14 and the oil-in of the second pilot operated compound relief valve 8, the second check valve 11
Oil-in is connected by hydraulic line with the actuator port 5c of the first electromagnetic type three position four-way directional control valve 5, and the second check valve 11 is fuel-displaced
Mouth is connected respectively with the oil-in 14b of dual-rod hydraulic cylinder 14 by hydraulic line and threeway with the oil-in of the 3rd pilot operated compound relief valve 9,
Outlet 14c, the 14b of dual-rod hydraulic cylinder 14 is connected respectively by hydraulic line with the first automatically controlled slide valve 15, the 2nd 16 automatically controlled slide valve
Connect, the second automatically controlled slide valve 15 is connected by hydraulic line with the oil-in of the 3rd check valve 12, and the second automatically controlled slide valve 16 passes through
Hydraulic line is connected with the oil-in of the 4th check valve 13, and the 3rd check valve 12, the oil-out of the 4th check valve 13 pass through hydraulic line
Hold in the middle of in and accumulator 20, the first pressure table 21, oil-in of the 3rd automatically controlled cone valve 19 and rock core displacement system logical with six
The lower end of device 25 connect, the first pilot operated compound relief valve (7), the second pilot operated compound relief valve (8), the 3rd pilot operated compound relief valve (9) and
The oil-out of the 3rd automatically controlled cone valve 19 is connected by hydraulic line with the first fuel tank 1；Second fuel tank 2 and in control loop
Two hydraulic pumps 4 are connected by hydraulic line, and the second hydraulic pump 4 is changed by hydraulic line and threeway with the second electromagnetic type 3-position 4-way
Connect to the oil-in of the oil-in 6a of valve 6 and overflow valve 24, the actuator port 6b of the second electromagnetic type three position four-way directional control valve 6 passes through
Hydraulic line and six reduction of fractions to a common denominators not with the second pilot operated compound relief valve (8), the control port and second of the 3rd pilot operated compound relief valve (9)
Pressure gauge 22, the connection of the oil-in of the second automatically controlled cone valve 18, the actuator port 6c of the second electromagnetic type three position four-way directional control valve 6 passes through
The control port respectively with the first pilot operated compound relief valve 7 of hydraulic line and four-way, the 3rd pressure gauge 23 and the first automatically controlled taper
The oil-in of valve 17 connects, and the oil-out of overflow valve 24, automatically controlled cone valve 17,18 oil-outs are connected with fuel tank 2.
PLC control system includes console 32, processor 33, data-converting block 34, touching display screen 35, power switch
36 and emergent mute key 37.The method that PLC control system is programmed by PLC, presses pressure gauge first pressure table (21) second
Power table (22) the 3rd pressure gauge (23), pressure gauge 26, confined pressure pressure gauge 27, the data of flow measurement device 29 carry out real-time monitoring,
And by controlling the first automatically controlled slide valve 1, the second automatically controlled slide valve 16, the automatically controlled cone valve of the first automatically controlled cone valve (17) second
(18), the 3rd automatically controlled cone valve (19), automatically controlled cone valve 30, the first electromagnetic type three position four-way directional control valve 5, the second electromagnetic type three
The hydraulic pump 3 of four-way change-over valve 6 and first, the open and close of the second hydraulic pump 4, experimentation is monitored, adjust with
Control.
Accumulator 20 plays pressure compensated effect in hydraulic control system described in the utility model, reduces pressure oscillation,
Improve experimental precision.
Hydraulic pump 3 is variable pump in hydraulic control system described in the utility model, and reality is carried out to the discharge capacity of pump by PLC
When control, the flow in rock core displacement system can be controlled.
Description of the drawings
Fig. 1 is automation rock core displacement test apparatus structure schematic diagram；
Fig. 2 goes out/oil-in schematic diagram for dual-rod hydraulic cylinder 14 in automation rock core displacement test apparatus structure schematic diagram；
Fig. 3 is electromagnetic type three position four-way directional control valve 5,6 oil-ins in automation rock core displacement test apparatus structure schematic diagram
With actuator port schematic diagram；
Fig. 4 is PLC control system structural representation；
Fig. 5 is PLC control system and controlled device connection diagram.
Specific embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1：
Before experiment is carried out, rock core is loaded into rock core displacement device, and connect hydraulic line, check device sealing.
PLC control system power switch 36 is opened, then by control panel to safe pressure and experimental pressure, flow
Set.Safe pressure determines by the set pressure of the first pilot operated compound relief valve 7, experimental pressure by the second pilot operated compound relief valve 8,
The set pressure of 3rd pilot operated compound relief valve 9 determines that empirical flow is determined by the discharge capacity of the first hydraulic pump 3.
When setting up the second pilot operated compound relief valve 8, the set pressure of the 3rd pilot operated compound relief valve 9, PLC control system control the
Two hydraulic pumps 4 start, and the second electromagnetic type three position four-way directional control valve position 6 of control is in left position.With pumping into for hydraulic oil, press in oil circuit
Power is raised.Pressure value can be measured by second pressure table 22, if pressure continues to pump into less than design set pressure；Higher than tune
Constant-pressure, then PLC control system control the second electromagnetic type three position four-way directional control valve 6 to middle position, now the first hydraulic pump 3 pumps into stream
Body flows back to the second fuel tank 2 by overflow valve 24, while PLC control system control the second automatically controlled cone valve 18 is opened and carries out pressure release,
Pressure release speed is controlled by the aperture of the second automatically controlled cone valve 18, and the aperture of the second automatically controlled cone valve 18 is by PLC control system control.
After the completion of setting, PLC control system controls the second automatically controlled cone valve 18 and closes, and the second electromagnetic type three position four-way directional control valve 6 is located at
Middle position.When setting up the set pressure of the first pilot operated compound relief valve 7, PLC control system controls the commutation of the second electromagnetic type 3-position 4-way
Valve 6 is located at right position, and hydraulic oil enters the pressure that oil circuit is improved in oil circuit, and pressure value can be measured by the 3rd pressure gauge 23, if pressure
Power then continues to pump into less than design set pressure, higher than set pressure, then PLC control system control the second electromagnetic type three four
Logical reversal valve 6 is located at middle position, and now the second hydraulic pump 4 pumps into fluid and flows back to the second fuel tank 2 by overflow valve 24, while PLC controls
System control the first automatically controlled cone valve 17 processed is opened and carries out pressure release, and pressure release speed is controlled by the aperture of the first automatically controlled cone valve 17,
The aperture of the first automatically controlled cone valve 17 is by PLC control system control.After the completion of setting, PLC control system controls the first automatically controlled cone
Shape valve 17 is closed, and the second electromagnetic type three position four-way directional control valve 6 is located at middle position.When the first pilot operated compound relief valve 7, the second pilot-operated type overflow
After stream valve 8, the 3rd pilot operated compound relief valve 9 complete to set up, PLC control system controls the second electromagnetic type three position four-way directional control valve 6
Pressurize is carried out positioned at middle position, the second hydraulic pump 4 is closed.
Embodiment 2：
When experiment is carried out, the first hydraulic pump 3 starts, and its discharge capacity is by set value calculation in PLC control system.PLC controls system
The first electromagnetic type three position four-way directional control valve of system control 5 is located at left position, and the first automatically controlled slide valve 15 is closed, the second automatically controlled slide valve 16
Open, hydraulic oil enters the left chamber of dual-rod hydraulic cylinder 14 by the first check valve 10.Hydraulic oil promotes the piston of dual-rod hydraulic cylinder 14
Move right so that the right cavity fluid of hydraulic cylinder by the second automatically controlled slide valve 16, the 4th check valve 13, accumulator 20, the
One pressure gauge 21 enters intermediate receptacle 25.When the piston movement of dual-rod hydraulic cylinder 14 is to right-hand member because pumping into for hydraulic oil causes liquid
Cylinder pressure left chamber pressure rises, and when the pressure is more than the second 8 set pressure of pilot operated compound relief valve, the second pilot operated compound relief valve 8 is opened
Open, so as to play a part of safety valve.Meanwhile, PLC control system controls the first electromagnetic type three position four-way directional control valve 5 and switches to the right side
Position, the first automatically controlled slide valve 15 is opened, and the second automatically controlled slide valve 16 is closed, and hydraulic oil enters double-rod liquid by the second check valve 11
The right chamber of cylinder pressure 14 promote piston to left movement, the left cavity fluid of hydraulic cylinder by the first automatically controlled slide valve 15, the 3rd check valve 12,
Accumulator 20, first pressure table 21 enter intermediate receptacle 25.The piston movement of dual-rod hydraulic cylinder 14 to during left end due to hydraulic oil
Pumping into causes hydraulic cylinder right chamber pressure to rise, when the pressure is more than the 3rd 9 set pressure of pilot operated compound relief valve, the 3rd pilot-operated type
Overflow valve 9 is opened, so as to play a part of safety valve.PLC control system control said process is repeated, so as to realize displacement
The carrying out of experiment.Operating pressure is measured by pressure gauge 26.Accumulator 20 plays pressure stabilization function in oil circuit.
Embodiment 3：
Experiment needs to suspend experiment during carrying out when, PLC control centres control the first electromagnetic type three position four-way directional control valve 5
Positioned at middle position, pressurize can be carried out to hydraulic cylinder, and limits the piston of dual-rod hydraulic cylinder 14 to move left and right, so as to limit rock core displacement
The carrying out of displacement test in system.The fluid that now hydraulic pump 3 is pumped into flows back to the first fuel tank 1 by the first pilot operated compound relief valve 7
In.
Embodiment 4：
When experiment terminates, the electromagnetic type three position four-way directional control valve 5,6 of PLC control system control first and second is located at middle position, hydraulic pressure
Pump 3-4 is closed, and the first automatically controlled cone valve 17, the second automatically controlled cone valve 18 open and carry out pressure release to oil circuit control, so as to reduce by the
One pilot operated compound relief valve 7, the second pilot operated compound relief valve 8, the set pressure of the 3rd pilot operated compound relief valve 9.3rd automatically controlled cone valve 19
Open, coordinate the first pilot operated compound relief valve 7, the second pilot operated compound relief valve 8, the 3rd pilot operated compound relief valve 9 to working connection pressure release.Electricity
Control cone valve 30 is opened, and to rock core displacement system pressure release is carried out.
Press switch 36, experimental rig power-off.
Embodiment 5：
PLC control system is by first pressure table 21, second pressure table, the 3rd pressure gauge 23, pressure gauge 26, confined pressure pressure
Power table 27 carries out monitor in real time.
It was found that when the pressure anomaly of second pressure table 22 declines, PLC control system controls the second hydraulic pump 4 and opens, and second is electric
Magnetic-type three position four-way directional control valve 6 is located at left position, and ftercompction is carried out to the oil circuit control, and simultaneous processor is reported to the police and aobvious in touch-control
Show in display screen.If pressure still cannot be stablized to design load after ftercompction, PLC control system Control release terminates, implementation method with
Embodiment 4 is consistent, and simultaneous processor is reported to the police to be opened in touching display screen and shown.
It was found that when the pressure anomaly of second pressure table 22 is raised, PLC control system control electromagnetic type three position four-way directional control valve position
In middle position, the second automatically controlled cone valve 18 is opened, and pressure release is carried out to the oil circuit control, and simultaneous processor is reported to the police and in touching display screen
Interior display, reminds experiment to carry out hydraulic line investigation after terminating.Cross pressure after pressure release still persistently to rise, PLC control system control
Experiment processed terminates, and implementation method is consistent with embodiment 4, and simultaneous processor is reported to the police and shown in touching display screen.
It was found that when the pressure anomaly of the 3rd pressure gauge 23 declines, PLC control system controls the second hydraulic pump 4 and opens, and second is electric
Magnetic-type three position four-way directional control valve 6 is located at right position, and ftercompction is carried out to the oil circuit control, and simultaneous processor is reported to the police and aobvious in touch-control
Show in display screen.If pressure still cannot be stablized to design load after ftercompction, PLC control system Control release terminates, implementation method with
Embodiment 4 is consistent, and simultaneous processor is reported to the police and shown in touching display screen.
It was found that when the pressure anomaly of the 3rd pressure gauge 23 is raised, PLC control system controls the commutation of the second electromagnetic type 3-position 4-way
Valve 6 is located at middle position, and the first automatically controlled cone valve 17 is opened, and pressure release is carried out to the oil circuit control, and simultaneous processor is reported to the police and in touch-control
Show in display screen, remind experiment to carry out hydraulic line investigation after terminating.Cross pressure after pressure release still persistently to rise, PLC controls
System Control release terminates, and implementation method is consistent with embodiment 4, and simultaneous processor is reported to the police and shown in touching display screen.
It was found that the pressure anomaly of first pressure table 21 decline when, PLC control system Control release terminates, implementation method with implement
Example 4 is consistent, and simultaneous processor is reported to the police and shown in touching display screen.
It was found that when the pressure anomaly of first pressure table 21 is raised, PLC control system controls the automatically controlled unlatching of cone valve 19 and is let out
Pressure, simultaneous processor is reported to the police and is shown in touching display screen.If pressure is still raised extremely after pressure release, PLC controls system
System Control release terminates, and implementation method is consistent with embodiment 4, and simultaneous processor is reported to the police and shown in touching display screen.
It was found that when the pressure anomaly of pressure gauge 26 declines, PLC control system Control release terminates, implementation method and embodiment 4
Unanimously, simultaneous processor is reported to the police and is shown in touching display screen.
It was found that when the pressure anomaly of pressure gauge 26 is raised, PLC control system controls automatically controlled cone valve 30 opens carries out pressure release, together
When processor reported to the police and in touching display screen show.If pressure is still raised extremely after pressure release, PLC control system control
Experiment terminates, and implementation method is consistent with embodiment 4, and simultaneous processor is reported to the police and shown in touching display screen.
Embodiment 6：
When artificial discovery emergency case needs interrupt experiments immediately, emergent mute key 37 is pressed, PLC control system is automatic
Control release terminates, and its implementation is consistent with embodiment 4.
Claims (1)
1. a kind of automation rock core displacement test device is made up of rock core displacement system, hydraulic control system and PLC control system,
It is characterized in that：Rock core displacement system includes intermediate receptacle (25), pressure gauge (26), confined pressure pressure gauge (27), core holding unit
(28), flow measurement device (29), automatically controlled cone valve (30) and fuel tank (31)；
Wherein, the hydraulic control system is divided into control loop and performance loop, including the first fuel tank (1) to hydraulic control system
Two fuel tanks (2), the first hydraulic pump (3), the second hydraulic pump (4), the first electromagnetic type three position four-way directional control valve (5), the second electromagnetic type
Three position four-way directional control valve (6), the first pilot operated compound relief valve (7), the second pilot operated compound relief valve (8), the 3rd pilot operated compound relief valve
(9), the check valve (11) of the first check valve (10) second, the 3rd check valve (12), the 4th check valve (13), through-rod piston cylinder
(14), the first automatically controlled slide valve (15), the second automatically controlled slide valve (16), the automatically controlled cone valve of the first automatically controlled cone valve (17) second
(18), the 3rd automatically controlled cone valve (19), accumulator (20), first pressure table (21) second pressure table (22) the 3rd pressure gauge
(23), overflow valve (24)；
PLC control system includes console (32), processor (33), data-converting block (34), touching display screen (35), power supply
Switch (36), emergent mute key (37), wherein, intermediate receptacle (25) upper end by hydraulic line and four-way respectively with pressure
The connection of power table (26), automatically controlled cone valve (30) and core holding unit (28), core holding unit (28) is by hydraulic line and stream
Amount metering device (29) connection, confined pressure pressure gauge (27) is threadedly attached on core holding unit, flow measurement device (29)
It is connected with fuel tank (31) by hydraulic line, automatically controlled cone valve (30) is connected by hydraulic line with fuel tank (31), intermediate receptacle
(25) lower end is connected by hydraulic line with hydraulic control system；
The first fuel tank (1) is connected with the first hydraulic pump (3) by hydraulic line in the performance loop, and the first hydraulic pump (3) leads to
Cross hydraulic line and threeway oil-in (5a) respectively with the first electromagnetic type three position four-way directional control valve (5) and the first pilot-operated type overflow
The oil-in connection of valve (7), the first check valve (10) oil-in is by hydraulic line and the first electromagnetic type three position four-way directional control valve
(5) actuator port (5b) connection, the oil-out of the first check valve (10) by hydraulic line and threeway respectively with double-rod hydraulic pressure
Cylinder (14) oil-in (14a) and the second pilot operated compound relief valve (8) oil-in connect, and the second check valve (11) oil-in passes through hydraulic pressure
Pipeline is connected with the first electromagnetic type three position four-way directional control valve (5) actuator port (5c), and the second check valve (11) oil-out passes through liquid
Pressure pipeline and threeway are connected respectively with dual-rod hydraulic cylinder (14) oil-in (14b) and the 3rd pilot operated compound relief valve (9) oil-in, double
Bar hydraulic cylinder (14) first outlet (14c), second outlet (14b) by hydraulic line respectively with the first automatically controlled slide valve (15),
Second automatically controlled slide valve (16) connection, the first automatically controlled slide valve (15) is connected by hydraulic line and the 3rd check valve (12) oil-in
Connect, the second automatically controlled slide valve (16) is connected by hydraulic line with the 4th check valve (13) oil-in, the 3rd check valve (12),
Four check valves (13) oil-out is led to and accumulator (20), first pressure table (21), the 3rd automatically controlled taper by hydraulic line and six
Intermediate receptacle (25) lower end connection in valve (19) oil-in and rock core displacement system, the first pilot operated compound relief valve (7), the second elder generation
The oil-out of conduction overflow valve (8), the 3rd pilot operated compound relief valve (9) and the 3rd automatically controlled cone valve (19) passes through hydraulic line
It is connected with the first fuel tank (1)；
The second fuel tank (2) is connected with the second hydraulic pump (4) by hydraulic line in the control loop, and the second hydraulic pump (4) leads to
Cross hydraulic line and threeway to connect with the oil-in of the second electromagnetic type three position four-way directional control valve (6) oil-in (6a) and overflow valve (24)
Connect, the actuator port (6b) of the second electromagnetic type three position four-way directional control valve (6) by hydraulic line and six reduction of fractions to a common denominators not with the second guide
Formula overflow valve (8), the control port of the 3rd pilot operated compound relief valve (9) and second pressure table (22), the second automatically controlled cone valve
(18) oil-in connection, the actuator port (6c) of the second electromagnetic type three position four-way directional control valve (6) is by hydraulic line and four reduction of fractions to a common denominators
Control port, the 3rd pressure gauge (23) and the first automatically controlled cone valve (17) oil-in not with the first pilot operated compound relief valve (7)
Connection, overflow valve (24) oil-out, the first automatically controlled cone valve (17), the second automatically controlled cone valve (18) oil-out with the second fuel tank
(2) connect；
In the PLC control system, processor (33), data-converting block (34) are installed on console (32) inside, and touch-control shows
Display screen (35), power switch (36), emergent mute key (37) are installed on console (32) upper surface；PLC data-converting blocks
By data wire and first pressure table (21) second pressure table (22) the 3rd pressure gauge (23) and pressure gauge (26), confined pressure pressure
Power table (27) and flow measurement device (29) connect；Processor is shown by data wire and data-converting block (34), touch-control
Screen (35), emergent mute key (37) connection；Processor is by circuit and the first automatically controlled slide valve (15), the second automatically controlled slide valve
(16), the automatically controlled cone valve (18) of the first automatically controlled cone valve (17) second, the 3rd automatically controlled cone valve (19), the first electromagnetic type three four
Logical reversal valve (5), the connection of the second electromagnetic type three position four-way directional control valve (6)；Power switch (36) is by electric wire and PLC control system
Power bus connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620834822.4U CN206114674U (en) | 2016-08-04 | 2016-08-04 | Automatic change rock core displacement experimental apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620834822.4U CN206114674U (en) | 2016-08-04 | 2016-08-04 | Automatic change rock core displacement experimental apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206114674U true CN206114674U (en) | 2017-04-19 |
Family
ID=58512258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620834822.4U Expired - Fee Related CN206114674U (en) | 2016-08-04 | 2016-08-04 | Automatic change rock core displacement experimental apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN206114674U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568981A (en) * | 2016-08-04 | 2017-04-19 | 中国石油大学(北京) | Automatic core displacement test device, and control method |
| CN109253927A (en) * | 2018-08-18 | 2019-01-22 | 中山大学 | A kind of permeable circulating pressure room of the all-pass of rock test |
-
2016
- 2016-08-04 CN CN201620834822.4U patent/CN206114674U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568981A (en) * | 2016-08-04 | 2017-04-19 | 中国石油大学(北京) | Automatic core displacement test device, and control method |
| CN109253927A (en) * | 2018-08-18 | 2019-01-22 | 中山大学 | A kind of permeable circulating pressure room of the all-pass of rock test |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20170419 Termination date: 20170804 |