CN108931394A - A kind of rock core oil washing instrument that can be sampled detection automatically - Google Patents

A kind of rock core oil washing instrument that can be sampled detection automatically Download PDF

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Publication number
CN108931394A
CN108931394A CN201810472609.7A CN201810472609A CN108931394A CN 108931394 A CN108931394 A CN 108931394A CN 201810472609 A CN201810472609 A CN 201810472609A CN 108931394 A CN108931394 A CN 108931394A
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China
Prior art keywords
rock core
oil
washing instrument
oil washing
cleaning
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CN201810472609.7A
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CN108931394B (en
Inventor
刘思齐
马纯
邰九龙
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NANTONG FEIYU OIL SCIENCE AND TECHNOLOGY EXPLOITATION Co Ltd
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NANTONG FEIYU OIL SCIENCE AND TECHNOLOGY EXPLOITATION Co Ltd
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Priority to CN201810472609.7A priority Critical patent/CN108931394B/en
Publication of CN108931394A publication Critical patent/CN108931394A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18Water
    • G01N33/1826Water organic contamination in water
    • G01N33/1833Oil in water
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N2001/1031Sampling from special places
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N2001/1087Categories of sampling

Abstract

The invention discloses the rock core oil washing instruments that one kind can be sampled detection automatically,Belong to rock core oil washing instrument field,A kind of rock core oil washing instrument that can be sampled detection automatically,Including oil cleaning apparatus bracket,Oil cleaning apparatus pedestal upper end is fixedly connected with solvent compartment,Ultrasonic control system and electrical control system,It can be in the unique sampler of rock core indoor location,Divide multilayer,And oil sensor in water is installed in sampler,Every cleaning is primary,Sampling is stored therein in one layer,It repeatedly stores in multiple layers,After sampling,Each layer is detected automatically using oil sensor in water,Reach automatic alarm after requirement,Illustrate that the crude oil in rock core has reached clearly standard,Every cleaning is not needed once just to sample once,Reduce sampling operation number,Reduce the workload of staff,Sample detection can be carried out directly inside sample storage layer simultaneously,Guarantee entire experiment in sealed environment,Make not will cause organic solvent vapor leakage,Influence human health.

Description

A kind of rock core oil washing instrument that can be sampled detection automatically
Technical field
The present invention relates to rock core oil washing instrument fields, can be sampled the rock core of detection automatically more specifically to one kind Oil cleaning apparatus.
Background technique
Rock core oil washing instrument is a kind of quick device for washing oil of ultrasonic wave, and sample is put into rock core basket and is put into rock core together by when use In room, solvent compartment is added in the stronger organic solvent of dissolving crude oil ability, and be heated to the evaporation of its boiling point, steam ascends into cold Solidifying room, steam condense to the cold, instill in liquid collecting room, and at this moment liquid inlet electromagnetic valve is normally opened, and liquid outlet electromagnetic valve is normally closed.So liquid collecting Liquid in room flows directly into core chamber, impregnates rock core, when the liquid of core chamber is saturated with core chamber (can from the liquidometer of liquid collecting room To find out), at this moment supersonic generator issues ultrasonic wave and carries out vibration washing oil to rock core, makes oil dissolution to reach oil removing purpose. Make the solvent refluxing dissolved with crude oil into solvent compartment, continue heating evaporation, circulation is washed in this way, until the crude oil washing/COW in rock core Until completely (reaching requirement).
But require to sample after cleaning every time, it needs repeatedly to sample in other words, and require to carry out after every sub-sampling Test and analyze it is more troublesome, and every sub-sampling require open core chamber, will cause organic solvent vapor leakage, influence human body Health.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide one kind can be sampled detection automatically Rock core oil washing instrument, it can divide multilayer in the unique sampler of rock core indoor location, and oil biography in water is equipped in sampler Sensor, every cleaning is primary, and sampling is stored therein in one layer, and repeatedly storage in multiple layers, after sampling, utilizes oil sensor in water Automatically each layer is detected, automatic alarm after requirement is reached, illustrates that the crude oil in rock core has reached clearly standard, does not need every cleaning It is primary just to sample once, sampling operation number is reduced, reduces the workload of staff, while sample detection can stored up directly It is carried out inside sample layer, guarantees entire experiment in sealed environment, made not will cause organic solvent vapor leakage, it is strong to influence human body Health.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of rock core oil washing instrument that can be sampled detection automatically, including oil cleaning apparatus bracket, the oil cleaning apparatus pedestal upper end It is fixedly connected with solvent compartment, ultrasonic control system and electrical control system, the solvent compartment, ultrasonic control system and electric appliance Control system is from left to right arranged successively, and the solvent compartment upper end is fixedly connected with liquid collecting room, and the liquid collecting room upper end is fixed to be connected It is connected to condensation chamber, the ultrasonic control system upper end is fixedly connected with core chamber, connects between the liquid collecting room and core chamber There is the inlet tube with liquid inlet electromagnetic valve, the outlet tube with liquid outlet electromagnetic valve be connected between the solvent compartment and core chamber, The rock core outdoor end is equipped with alarm, and bottom end is fixedly connected with sampler in the core chamber, and the sampler inner end is equal Even to be divided into multilayer sample storage layer, bottom end is mounted on oil sensor in water in sample storage layer described in multilayer, sample storage layer top described in multilayer Upper electric sealed door is connected with by electric rotation shaft, multilayer, Er Qiequ can be divided in the unique sampler of rock core indoor location Oil sensor in water is installed, every cleaning is primary, and sampling is stored therein in one layer, and repeatedly storage in multiple layers, takes in sample device After sample, each layer is detected automatically using oil sensor in water, reaches automatic alarm after requirement, illustrate crude oil in rock core clearly Reach standard, does not need every cleaning and once just sample once, reduce sampling operation number, reduce the workload of staff, together When sample detection can directly be carried out inside sample storage layer, guarantee that entire experiment in sealed environment, makes not will cause organic Solvent vapo(u)r leakage, influences human health.
Further, control panel is electrically connected on the alarm, the control panel is controlled by single-chip microcontroller, the alarm Device and sampler are electrically connected, and can control the folding of upper electric sealed door by control panel, open electric sealed door, then Sample storage layer corresponding with electric sealed door on this can be automatically performed primary sample.
Further, threshold value is set in the water in oil sensor, the threshold value is the crude oil washing/COW standard in rock core Numerical value, oil sensor and control panel are electrically connected in the water, and oil sensor can detecte crude content in water, when in rock core Crude content be lower than the threshold value when, illustrate rock core cleaning have reached standard.
Further, the outer surface of the sampler is coated with corrosion-inhibiting coating, sampler can be made to be not easy to be corroded, extension takes The service life of sample device.
Further, the organic solvent being added in the solvent compartment is non-benzene or substituted benzene, benzene or substituted benzene Oil sensor in water can be interfered, so that testing result is affected.
Further, the surface of the solvent compartment carries out Cr, Si, Al Alloying Treatment, so that solvent compartment is in heating evaporation In the process, one layer of fine and close oxidation film, and the surface of the solvent compartment Fu Di securely are generated quickly, to effectively prevent oxidation Continue, increases the service life of solvent compartment.
Further, the liquid inlet electromagnetic valve and liquid outlet electromagnetic valve select corrosion-proof solenoid valve, and material is all steel, is made Solenoid valve will not be corroded, and increase its service life.
Further, the bottom end of sample storage layer described in multilayer offers liquid outlet, and the side wall of the liquid outlet offers cunning Slot is connected with electronic slide unit in the sliding slot, sliding block is slidably connected on the electronic slide unit, the upper end of slide block is fixedly connected There is lower electric sealed door, the lower electric sealed door and control panel are electrically connected, and lower electric sealed can be controlled by control panel The folding of door can be convenient the sample released in sample storage layer after cleaning.
Further, the upper electric sealed door lower end is fixedly connected with sealing ring, increases the leakproofness of sampler, so that When closed, extraneous solvent will not enter the inside of sampler to upper electric sealed door.
Further, the opening of the sample storage layer is equipped with range sensor, on the range sensor and alarm Control panel is electrically connected, and is provided with threshold value in range sensor, after height of specimen reaches threshold value in sample storage layer, range sensor Signal can be fed back to control panel, allow the single-chip microcontroller in control panel to control the upper electric sealed door of closing in time, keep every The sample size of sub-sampling is consistent.
3. beneficial effect
Compared with the prior art, the advantage of the invention is that:
(1) this programme can divide multilayer, and be equipped in water in sampler in the unique sampler of rock core indoor location Oil sensor, every cleaning is primary, and sampling is stored therein in one layer, and repeatedly storage in multiple layers, after sampling, is passed using oil in water Sensor detects each layer automatically, reaches automatic alarm after requirement, illustrates that the crude oil in rock core has reached clearly standard, does not need every Cleaning once just samples once, reduces sampling operation number, reduces the workload of staff, while sample detection can be direct It is carried out inside sample storage layer, guarantees entire experiment in sealed environment, made not will cause organic solvent vapor leakage, influence people Body health.
(2) control panel is electrically connected on alarm, control panel is controlled by single-chip microcontroller, and alarm electrically connects with sampler Connect, can control the folding of upper electric sealed door by control panel, make electric sealed door open, then with electric sealed door on this Corresponding sample storage layer can be automatically performed primary sample.
(3) threshold value is set in water in oil sensor, threshold value is the numerical value of the crude oil washing/COW standard in rock core, and oil passes in water Sensor and control panel are electrically connected, and oil sensor can detecte crude content in water, when the crude content in rock core is lower than the threshold When value, illustrate that rock core cleaning has reached standard.
(4) the outer surface of the sampler is coated with corrosion-inhibiting coating, and sampler can be made to be not easy to be corroded, and extends the longevity of sampler Life.
(5) organic solvent being added in solvent compartment is non-benzene or substituted benzene, and benzene or substituted benzene can be to oily in water Sensor interferes, so that testing result is affected.
(6) surface of solvent compartment carries out Cr, Si, Al Alloying Treatment, so that solvent compartment is during heating evaporation, quickly One layer of fine and close oxidation film, and the surface of the solvent compartment Fu Di securely are generated, to effectively prevent continuing for oxidation, is increased The service life of solubilizer room.
(7) liquid inlet electromagnetic valve and liquid outlet electromagnetic valve select corrosion-proof solenoid valve, and material is all steel, and solenoid valve will not be by Corrosion, increases its service life.
(8) bottom end of multilayer sample storage layer offers liquid outlet, and the side wall of liquid outlet offers sliding slot, is connected in sliding slot Electronic slide unit slidably connects sliding block on electronic slide unit, and upper end of slide block is fixedly connected with lower electric sealed door, lower electric sealed door It is electrically connected with control panel, the folding of lower electric sealed door can be controlled by control panel, can be convenient and put after cleaning Sample in sample storage layer out.
(9) electric sealed door lower end is fixedly connected with sealing ring on, increases the leakproofness of sampler, so that upper electric sealed When closed, extraneous solvent will not enter the inside of sampler to door.
(10) opening of sample storage layer is equipped with range sensor, and the control panel on the range sensor and alarm is electrical It connects, is provided with threshold value in range sensor, after height of specimen reaches threshold value in sample storage layer, range sensor can be anti-by signal It feeds control panel, allows the single-chip microcontroller in control panel to control the upper electric sealed door of closing in time, keep the sample of every sub-sampling Product amount is consistent.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention;
Fig. 2 is flow diagram of the invention;
Fig. 3 is the structural schematic diagram of sampler part of the invention;
Fig. 4 is the structural schematic diagram in Fig. 3 at A.
Figure label explanation:
1 solvent compartment, 2 liquid collecting room, 3 condensation chambers, 4 core chamber, 5 ultrasonic control systems, 6 electrical control systems, 7 alarms Device, 8 samplers, 9 sample storage layers, oil sensor in 10 water, electric sealed door, 12 range sensors, 13 liquid outlets, 14 lower electricity on 11 Dynamic sealing door.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention;Technical solution in the embodiment of the present invention carries out clear, complete Site preparation description;Obviously;Described embodiments are only a part of the embodiments of the present invention;Instead of all the embodiments, it is based on Embodiment in the present invention;It is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment;It shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "inner", "outside" " top/bottom end " Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention and simplification retouch It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, Therefore it is not considered as limiting the invention.In addition, term " first ", " second " are used for description purposes only, and cannot understand For indication or suggestion relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set Be equipped with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, be also possible to removable Connection is unloaded, or is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, it can also be in Between medium be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be specific Situation understands the concrete meaning of above-mentioned term in the present invention.
Embodiment 1:
A kind of rock core oil washing instrument that can be sampled detection automatically referring to FIG. 1-2, including oil cleaning apparatus bracket, oil cleaning apparatus Pedestal upper end is fixedly connected with solvent compartment 1, ultrasonic control system (prior art) 5 and electrical control system (prior art) 6, Solvent compartment 1, ultrasonic control system 5 and electrical control system 6 are from left to right arranged successively, and what is be added in solvent compartment 1 is organic molten Agent is non-benzene or substituted benzene, and benzene or substituted benzene can interfere oil sensor 10 in water so that testing result by Cr, Si, Al Alloying Treatment are carried out to the surface of influence, solvent compartment 1, so that solvent compartment 1 gives birth to quickly during heating evaporation At one layer of fine and close oxidation film, and the surface of the solvent compartment Fu Di 1 securely increases to effectively prevent continuing for oxidation The service life of solubilizer room 1,1 upper end of solvent compartment are fixedly connected with liquid collecting room 2, and 2 upper end of liquid collecting room is fixedly connected with condensation chamber 3,5 upper end of ultrasonic control system is fixedly connected with core chamber 4, is connected between liquid collecting room 2 and core chamber 4 with feed liquor electromagnetism The inlet tube of valve is connected with the outlet tube with liquid outlet electromagnetic valve, liquid inlet electromagnetic valve and out liquid between solvent compartment 1 and core chamber 4 Solenoid valve selects corrosion-proof solenoid valve, and material is all steel, and solenoid valve is made not to be corroded, and increases its service life, rock core 4 outer end of room is equipped with alarm 7, and control panel is electrically connected on alarm 7, and control panel is controlled by single-chip microcontroller, and control panel is led to Electricity, alarm 7 and sampler 8 are electrically connected, and be can control the folding of upper electric sealed door 11 by control panel, are made electronic close Closure door 11 is opened, then sample storage layer 9 corresponding with electric sealed door 11 on this can be automatically performed primary sample, upper electric sealed 11 lower ends of door are fixedly connected with sealing ring, increase the leakproofness of sampler 8, so that upper electric sealed door 11 is when closed, it is extraneous Solvent will not enter the inside of sampler 8, bottom end is fixedly connected with sampler 8 in core chamber 4, and 8 outer surface of sampler applies Equipped with corrosion-inhibiting coating, sampler 8 can be made to be not easy to be corroded, extend the service life of sampler 8.
Fig. 3-4 is please referred to, 8 inner end of sampler is uniformly divided into multilayer sample storage layer 9, and the bottom end of multilayer sample storage layer 9 offers Liquid outlet 13, the side wall of liquid outlet 13 offer sliding slot, and electronic slide unit is connected in sliding slot, slidably connects cunning on electronic slide unit Block, upper end of slide block are fixedly connected with lower electric sealed door 14, and lower electric sealed door 14 is electrically connected with control panel, can pass through control Making sheet controls the folding of lower electric sealed door 14, can be convenient the sample released in sample storage layer 9 after cleaning, sample storage layer 9 Opening range sensor 12 is housed, the control panel on range sensor 12 and alarm 7 is electrically connected, range sensor 12 It is inside provided with threshold value, after height of specimen reaches threshold value in sample storage layer 9, signal can be fed back to control panel by range sensor 12, Allow the single-chip microcontroller in control panel to control the upper electric sealed door 11 of closing in time, keep the sample size of every sub-sampling consistent, Bottom end is mounted on oil sensor 10 in water in multilayer sample storage layer 9, is set with threshold value in water in oil sensor 10, and threshold value is rock core In crude oil washing/COW standard numerical value, oil sensor 10 and control panel are electrically connected in water, and oil sensor can detecte original in water Oil content illustrates that rock core cleaning has reached standard, multilayer sample storage layer 9 pushes up when the crude content in rock core is lower than the threshold value End is connected with upper electric sealed door 11 by electric rotation shaft, and unique sampler 8 can be installed in core chamber 4, divides multilayer, And oil sensor 10 in water are installed in sampler 8, every cleaning is primary, and sampling is stored therein in one layer, is repeatedly stored in In multilayer, after sampling, each layer is detected automatically using oil sensor 10 in water, reaches automatic alarm after requirement, illustrates in rock core Crude oil have reached standard clearly, do not need every cleaning and once just sample primary, reduce sampling operation number, reduce staff Workload, while sample detection can be carried out directly inside sample storage layer 9, guarantee that entire experiment in sealed environment, makes It not will cause organic solvent vapor leakage, influence human health.
In use, being controlled above first sample storage layer 9 after the completion of cleaning for the first time by the control panel on alarm 7 Upper electric sealed door 11 open, enter sample in first sample storage layer 9, set on range sensor 12 when height of specimen reaches After fixed height threshold, information is passed through wireless signal feedback to control panel by range sensor 12, and then control panel can control Electric sealed door 11 is closed, and oil sensor 10 can carry out analysis detection to sample in the water in sample storage layer 9 at this time, if sample detection As a result reach the threshold value set on oil sensor 10 in water, then oil sensor 10 can be given information by wireless signal feedback in water Alarm 7, alarm 7 receives meeting automatic alarm after information, technical staff's cleaning is prompted to reach requirement, if not up to threshold value, Start to carry out second of cleaning, after second is cleaned, the upper electric sealed on second sample storage layer 9 can be controlled by control panel Door 11 is opened, and second of sample detection is carried out, and repeats this process, until alarm 7 is alarmed, i.e. crude oil washing/COW in rock core reaches To standard, unique sampler 8 can be installed in core chamber 4, divide multilayer, and oil sensing in water is installed in sampler 8 Device 10, every cleaning is primary, and sampling is stored therein in one layer, and repeatedly storage in multiple layers, after sampling, utilizes oil sensor in water 10 detect each layer automatically, reach 7 automatic alarm of alarm after requirement, illustrate that the crude oil in rock core has reached clearly standard, no It needs every cleaning once just to sample primary, reduces sampling operation number, reduce the workload of staff, while sample detection can Directly to carry out inside sample storage layer 9, guarantee that entire experiment in sealed environment, not will cause organic solvent vapor leakage, Influence human health.
It is described above;It is merely preferred embodiments of the present invention;But scope of protection of the present invention is not limited thereto; Anyone skilled in the art is in the technical scope disclosed by the present invention;According to the technique and scheme of the present invention and its It improves design and is subject to equivalent substitution or change;It should be covered by the scope of protection of the present invention.

Claims (10)

1. one kind can be sampled the rock core oil washing instrument of detection, including oil cleaning apparatus bracket automatically, it is characterised in that:The oil cleaning apparatus Pedestal upper end is fixedly connected with solvent compartment (1), ultrasonic control system (5) and electrical control system (6), the solvent compartment (1), Ultrasonic control system (5) and electrical control system (6) are from left to right arranged successively, and solvent compartment (1) upper end is fixedly connected Have liquid collecting room (2), liquid collecting room (2) upper end is fixedly connected with condensation chamber (3), and ultrasonic control system (5) upper end is solid Surely it is connected with core chamber (4), is connected with the inlet tube with liquid inlet electromagnetic valve, institute between the liquid collecting room (2) and core chamber (4) It states and is connected with the outlet tube with liquid outlet electromagnetic valve between solvent compartment (1) and core chamber (4), core chamber (4) the outer end installation Have alarm (7), control panel is electrically connected on the alarm (7), the interior bottom end of the core chamber (4) is fixedly connected with sampling Device (8), sampler (8) inner end are uniformly divided into multilayer sample storage layer (9), and sample storage layer (9) interior bottom end described in multilayer is mounted on Oil sensor (10) in water, sample storage layer (9) top described in multilayer are respectively connected with electric sealed door (11), the alarm (7), Oil sensor (10), upper electric sealed door (11) are electrically connected with control panel in water.
2. one kind according to claim 1 can be sampled the rock core oil washing instrument of detection automatically, it is characterised in that:The control Making sheet uses single-chip microcontroller for control core.
3. the rock core oil washing instrument that one kind according to claim 1 or 2 can be sampled detection automatically, it is characterised in that:Institute It states and is set with threshold value in oil sensor in water (10), the threshold value is the numerical value of the crude oil washing/COW standard in rock core.
4. the rock core oil washing instrument that one kind according to claim 1 can be sampled detection automatically, it is characterised in that:It is described to take Sample device (8) outer surface is coated with corrosion-inhibiting coating.
5. the rock core oil washing instrument that one kind according to claim 1 can be sampled detection automatically, it is characterised in that:It is described molten The organic solvent being added in agent room (1) is non-benzene or substituted benzene.
6. the rock core oil washing instrument that one kind according to claim 1 can be sampled detection automatically, it is characterised in that:It is described molten The surface of agent room (1) carries out Cr, Si, Al Alloying Treatment.
7. the rock core oil washing instrument that one kind according to claim 1 can be sampled detection automatically, it is characterised in that:It is described into Liquid electromagnetic valve and liquid outlet electromagnetic valve select corrosion-proof solenoid valve, and material is all steel.
8. the rock core oil washing instrument that one kind according to claim 1 or 2 can be sampled detection automatically, it is characterised in that:It is more The bottom end of the layer sample storage layer (9) offers liquid outlet (13), and the side wall of the liquid outlet (13) offers sliding slot, the cunning It is connected with electronic slide unit in slot, sliding block is slidably connected on the electronic slide unit, the upper end of slide block is fixedly connected with down electronic Hermatic door (14), the lower electric sealed door (14) and control panel are electrically connected.
9. the rock core oil washing instrument that one kind according to claim 1 can be sampled detection automatically, it is characterised in that:On described Electric sealed door (11) lower end is fixedly connected with sealing ring.
10. the rock core oil washing instrument that one kind according to claim 1 or 2 can be sampled detection automatically, it is characterised in that:Institute The opening of sample storage layer (9) is stated equipped with range sensor (12), the range sensor (12) and the control panel on alarm (7) It is electrically connected.
CN201810472609.7A 2018-05-17 2018-05-17 Core oil washing instrument capable of automatically carrying out sampling detection Active CN108931394B (en)

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