Dehydrator capable of stratified sampling and method

Abstract

The invention discloses a dehydrator and method capable of stratified sampling, and relates to the technical field of dehydrators, the dehydrator comprises a settling cylinder assembly, the settling cylinder assembly comprises a settling cylinder, a piston plate, a telescopic cylinder, a liquid inlet pipe, a primary sampling pipe and a purging pipe; the piston plates are connected in the inner cavity of the settling cylinder in a sliding manner, so that settling chambers are defined above the corresponding piston plates; the telescopic cylinder is in transmission connection with the piston plate; one end of the liquid inlet pipe is communicated with the settling chamber, and the other end of the liquid inlet pipe is a connecting port; an air inlet and a sampling port horizontally opposite to the air inlet are formed in the inner peripheral wall of the settling chamber close to the top end; the purging pipe is communicated with the air inlet; the primary sampling pipe is communicated with the sampling port; a valve assembly; the valve assembly comprises a first valve, a second valve and a third valve. The first valve is mounted on the liquid inlet pipe, the second valve is mounted on the primary sampling pipe, and the third valve is mounted on the purging pipe. The device can be used for orderly separating gas, free water and emulsified water to obtain purified dry oil, and has the characteristics of rapidness in operation and good effect.

Description

Technical Field

[0001] The invention relates to the technical field of dehydrators, and in particular to a dehydrator capable of stratified sampling and a method thereof. Background Art

[0002] In fine chemical or crude oil production, static stratification separation is often used for oil, gas and water separation, such as the dehydration of organic peroxides in fine chemical production; however, there will be an emulsified intermediate layer phenomenon during the static stratification process of fine chemical production reaction, which makes the static stratification separation method unable to effectively dehydrate, bringing difficulties to dehydration. The existing sedimentation tank structure can only separate free water from oil. Emulsified water is water in the oil in an emulsion state. Since it forms an oil-in-water emulsion with oil, it is difficult to separate emulsified water by sedimentation, and special dehydration measures must be adopted; in order to promote the stratification of oil, gas and water, heating, microwave, vacuum, chemical, ultrasonic and ultrasonic demulsification dehydration can be used to promote oil, gas and water separation; however, the existing device has the problem of complex sampling operation process, low dehydration efficiency and poor effect of oil, gas and water mixture.

[0003] Therefore, how to provide a dehydrator and method for stratified sampling, which can orderly separate and extract free water and emulsified water for oil purification and component analysis, and has the characteristics of fast sampling operation, high efficiency and good effect is an urgent problem that needs to be solved by technical personnel in this field. Summary of the invention

[0004] In view of this, the present invention proposes a dehydrator and method capable of stratified sampling, aiming to solve the technical problem of low detection efficiency and poor purification effect caused by the inability of traditional dehydrators to effectively separate and extract oil, gas and water in produced oil.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] One aspect of the present invention provides a dehydrator capable of stratified sampling, comprising:

[0007] A sedimentation cylinder assembly, the sedimentation cylinder assembly comprising a sedimentation cylinder, a piston plate, a telescopic cylinder, a liquid inlet pipe, a primary sampling pipe and a purge pipe;

[0008] The piston plate can be lifted and slid and is sealed and connected in the inner cavity of the sinking cylinder, so as to define a sinking chamber for separating free water in the oil corresponding to the piston plate in the inner cavity of the sinking cylinder; the telescopic cylinder is installed at the bottom end of the sinking cylinder and is transmission-connected to the piston plate to drive the piston plate to lift;

[0009] The top of the sedimentation cylinder is connected to a liquid inlet pipe, one end of which is connected to the sedimentation chamber, and the other end is a connection port connected to and connected to the oil delivery pipeline; an air inlet is opened near the top of the inner wall of the sedimentation chamber, and a sampling port is opened at a position horizontally opposite to the air inlet in the inner wall of the sedimentation chamber;

[0010] The purge pipe is connected to the air inlet; the primary sampling pipe is connected to the sampling port;

[0011] Valve assembly; the valve assembly includes valve one, valve two and valve three; the valve one is installed on the liquid inlet pipe, the valve two is installed on the primary sampling pipe, and the valve three is installed on the purge pipe.

[0012] When the dehydrator of the present invention is used, when valves 1, 2 and 3 are all closed, the piston plate can be driven down to form a vacuum sampling area in the sedimentation chamber, thereby avoiding the introduction of external air into the collected oil-gas-water mixture, and improving the detection and analysis accuracy of the gas components in the collected oil. The present invention can extract the gas layer, oil layer and water layer in sequence through the lifting and lowering control of the piston plate, and can extract the solid impurity layer by purging through the purge pipe; the inner cavity of the sedimentation cylinder can be cleaned by introducing gas or cleaning liquid through the purge pipe, further improving the sampling accuracy.

[0013] As a further improvement of the above technical solution, the sedimentation cylinder assembly also includes a slag discharge pipe, one end of which is connected to the first-level sampling pipe and corresponds to between the valve two and the sampling port; the valve assembly also includes a valve four; the valve four is installed on the slag discharge pipe.

[0014] The beneficial effect of the above technical solution is that the slag discharge pipe is specially used for centralized discharge of the solid impurity layer, which is convenient for centralized collection and subsequent testing and analysis.

[0015] As a further improvement of the above technical solution, the sedimentation cylinder assembly also includes a transparent sampling tube, the lower end of which is connected to the first-level sampling tube and corresponds to between the valve two and the sampling port; the valve assembly also includes valve seven; the valve seven is installed at the upper end of the transparent sampling tube.

[0016] The beneficial effects of the above technical solution are: the transparent sampling tube is used to extract the gas layer and the water layer; the transparent sampling tube is convenient for visually observing the gas-liquid state and color state of the sample, which is conducive to judging the sampling boundary point between the gas layer and the water layer; when extracting the oil layer through the primary sampling tube, the sampling boundary point between the oil layer and the water layer can also be judged by observing the color of the liquid overflowing into the transparent sampling tube.

[0017] As a further improvement of the above technical solution, it also includes a secondary dehydrator for separating emulsified water in oil, the secondary dehydrator includes a centrifugal tank, a stirring shaft cylinder, an ultrasonic stirring blade, an energized bracket, a driving motor and a collecting pipe;

[0018] A partition plate is horizontally arranged at the upper part of the centrifugal tank to divide the inner cavity of the centrifugal tank into a gas collecting chamber and a dehydration chamber; a liquid inlet is arranged on the outer peripheral wall of the centrifugal tank corresponding to the top of the dehydration chamber;

[0019] The stirring shaft barrel is arranged in the middle of the dehydration chamber, and the upper end thereof vertically penetrates the partition plate and extends to the top of the gas collecting chamber; the stirring shaft barrel is rotatably connected to the partition plate; the power-on bracket is installed in the lower part of the centrifugal tank, and the lower end of the stirring shaft barrel is rotatably connected to the power-on bracket and electrically connected to the power-on bracket; the power-on bracket is electrically connected to an external power supply;

[0020] The ultrasonic stirring blade is fixedly mounted on the peripheral wall of the stirring shaft barrel; the peripheral wall of the stirring shaft barrel is provided with a collecting through hole connected to the dehydration chamber and an air outlet through hole connected to the air collecting chamber; the driving motor is mounted on the top of the centrifugal tank and is transmission-connected to the stirring shaft barrel to drive the stirring shaft barrel to rotate, and drive the ultrasonic stirring blade to rotate to form a stirring blade structure;

[0021] One end of the collecting pipe vertically penetrates the outer peripheral wall of the centrifugal tank and extends to the middle of the inner cavity of the centrifugal tank and corresponds to the outer peripheral wall of the stirring shaft cylinder to collect the dehydrated oil; a valve five is installed at the other end of the collecting pipe.

[0022] The beneficial effects of the above technical scheme are as follows: the ultrasonic stirring blade has the dual functions of ultrasonic demulsification and dehydration and centrifugal stirring; the external power supply supplies power to the ultrasonic stirring blade through the power-on bracket, and the ultrasonic stirring blade can generate a sound field in the surrounding area after being powered on to perform ultrasonic demulsification and dehydration on the oil; the driving motor drives the stirring shaft cylinder and the ultrasonic stirring blade to rotate to achieve stirring and centrifugalization of the oil; under the action of centrifugal force, water droplets in the oil move toward the inner wall of the dehydration chamber, and under the action of gravity, the water droplets converge along the inner wall of the dehydration chamber to the bottom of the dehydration chamber; under the action of centrifugal force, bubbles in the oil move toward the stirring shaft cylinder and enter the inner cavity of the stirring shaft cylinder, and under the action of buoyancy, the bubbles move upward along the central cavity of the stirring shaft cylinder to the gas collecting chamber, thereby further realizing the separation of oil, gas and water; one end of the collecting tube extends to the middle of the inner cavity of the centrifuge tank, so that purer oil can be collected.

[0023] As a further improvement of the above technical solution, there are multiple ultrasonic stirring blades, and the multiple ultrasonic stirring blades are arranged at intervals along the length direction of the stirring shaft barrel;

[0024] The collecting tube is located at one end inside the centrifugal tank and corresponds to between two adjacent ultrasonic stirring blades.

[0025] The beneficial effect of the above technical solution is that a plurality of ultrasonic stirring blades can improve the efficiency of ultrasonic demulsification and dehydration, and can also improve the stirring and centrifugal effects.

[0026] As a further improvement of the above technical solution, an inverted cone-shaped water collection chamber connected to the dehydration chamber is provided at the lower part of the inner cavity of the centrifugal tank; a drain pipe connected to the bottom of the inverted cone-shaped water collection chamber is provided at the bottom end of the centrifugal tank; and a valve six is ​​installed on the drain pipe.

[0027] The beneficial effect of the above technical solution is that the inverted cone-shaped water collecting chamber can facilitate the confluence and discharge of separated water in the oil.

[0028] As a further improvement of the above technical solution, the centrifugal tank is a transparent glass tank.

[0029] The beneficial effect of the above technical solution is that the centrifugal tank is a transparent glass tank, which can facilitate visual observation of the status of the internal centrifugal dehydration operation and facilitate the judgment of the stratification boundary point.

[0030] Another aspect of the present invention provides a dehydration method for stratified sampling, comprising the dehydrator for stratified sampling; the dehydration step comprises:

[0031] S1: Connect the connecting port of the liquid inlet pipe to the sampling valve of the oil delivery pipeline; place the piston plate on the top of the inner cavity of the sedimentation cylinder, close valves 1, 2 and 3, and the telescopic cylinder drives the piston plate to descend to build a sedimentation chamber in a vacuum state;

[0032] S2: Open valve 1, introduce the oil-gas-water mixture in the oil delivery pipeline into the sedimentation cylinder, and then close valve 1;

[0033] S3: Standing, so that the oil-gas-water mixture in the settling tank is separated into gas layer, oil layer, water layer and solid impurity layer from top to bottom;

[0034] S4: The piston plate is driven to rise by the telescopic cylinder to separate and extract gas, oil and water from the sampling port in sequence;

[0035] S5: Connect the purge tube to an external gas source or water pump to introduce gas or cleaning water into the sedimentation chamber from the air inlet, clean the solid impurity layer on the upper end of the piston plate, and discharge the solid impurities from the sampling port.

[0036] As a further improvement of the above technical solution, S4 includes the following steps:

[0037] S4.1: Close valve 2, open valve 7, and drive the piston plate upward through the telescopic cylinder to discharge and collect the gas from the transparent sampling tube;

[0038] S4.2: After the gas layer in the sedimentation chamber is extracted, the first-level sampling tube is connected to the liquid inlet of the centrifuge tank, valve seven is closed, valve two is opened, the piston plate is driven up by the telescopic cylinder, and the liquid of the oil layer in the sedimentation tank is injected into the dehydration chamber of the centrifuge tank from the first-level sampling tube;

[0039] S4.3: Close valve 2 and open valve 7; drive the piston plate upward through the telescopic cylinder to discharge and collect the water layer in the sedimentation tank from the transparent sampling tube;

[0040] S4.4: Power the ultrasonic stirring blades through the powered bracket to establish a sound field around them for ultrasonic demulsification and dehydration; start the driving motor to drive the stirring shaft barrel to rotate, and drive the ultrasonic stirring blades to stir the oil layer liquid, so that the oil layer liquid rotates and centrifuges to dehydrate, and the separated water droplets move downward along the inner wall of the dehydration chamber to the inverted cone-shaped water collection chamber under the action of centrifugal force and gravity; under the action of centrifugal force and gravity, the bubbles in the oil layer liquid gather toward the stirring shaft barrel and enter the gas collection chamber through the collection through hole, the inner cavity of the stirring shaft barrel, and the gas outlet through hole in turn for storage;

[0041] S4.5: Open valve 5 to extract and separate the oil layer liquid with emulsified water removed through the collection tube;

[0042] S4.6: Turn off the drive motor, let it stand, open valve six, and extract the emulsified water obtained by centrifugal separation and sedimentation in the centrifugal tank and the oil layer liquid with the emulsified water removed in sequence through the discharge pipe.

[0043] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a dehydrator and method capable of stratified sampling, which has the following advantages and beneficial effects:

[0044] 1. The dehydrator of the present invention can be connected to the oil delivery pipeline for sampling. By organically combining sedimentation dehydration, centrifugal dehydration and ultrasonic demulsification dehydration, it can orderly separate and extract gas, free water and emulsion water, which is convenient for oil component analysis and has the advantages of fast sampling operation, low labor intensity and high detection efficiency.

[0045] 2. The present invention can realize the cleaning function of the sedimentation cylinder and the centrifugal tank by injecting cleaning liquid through the purge pipe; and can realize the drying function of the sedimentation cylinder and the centrifugal tank by injecting hot air through the purge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0047] Figure 1 A schematic diagram of the overall structure of a dehydrator capable of stratified sampling;

[0048] In the figure: 1. Sedimentation cylinder assembly; 11. Sedimentation cylinder; 111. Sedimentation chamber; 1111. Air inlet; 1112. Sampling port; 12. Piston plate; 13. Telescopic cylinder; 14. Liquid inlet pipe; 15. Primary sampling pipe; 16. Purge pipe; 17. Slag discharge pipe; 18. Transparent sampling pipe; 2. Valve assembly; 21. Valve 1; 22. Valve 2; 23. Valve 3; 24. Valve 4; 25. Valve 5; 26. Valve Door six; 27, valve seven; 3, secondary dehydrator; 31, centrifugal tank; 311, partition plate; 312, gas collecting chamber; 313, dehydration chamber; 314, inverted cone water collecting chamber; 315, liquid inlet; 32, stirring shaft cylinder; 321, collecting through hole; 322, air outlet through hole; 33, ultrasonic stirring blade; 34, power bracket; 35, driving motor; 36, collecting pipe; 37, drain pipe; 4, oil delivery pipeline. DETAILED DESCRIPTION

[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0050] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] like Figure 1 A dehydrator capable of stratified sampling, comprising:

[0054] The sedimentation cylinder assembly 1 includes a sedimentation cylinder 11, a piston plate 12, a telescopic cylinder 13, a liquid inlet pipe 14, a primary sampling pipe 15 and a purge pipe 16;

[0055] The piston plate 12 can be lifted and slid and is sealed and connected in the inner cavity of the sinking cylinder 11, so as to define a sinking chamber 111 for separating free water in the oil corresponding to the piston plate 12 in the inner cavity of the sinking cylinder 11; the telescopic cylinder 13 is installed at the bottom end of the sinking cylinder 11 and is transmission-connected to the piston plate 12 to drive the piston plate 12 to lift;

[0056] The top of the sedimentation cylinder 11 is connected to a liquid inlet pipe 14, one end of which is connected to the sedimentation chamber 111, and the other end is a connection port connected to and connected to the oil delivery pipeline 4; an air inlet is opened near the top of the inner wall of the sedimentation chamber 111, and a sampling port 1112 is opened at a position horizontally opposite to the air inlet 1111 on the inner wall of the sedimentation chamber 111;

[0057] The purge pipe 16 is connected to the air inlet 1111; the primary sampling pipe 15 is connected to the sampling port 1112;

[0058] Valve assembly 2; valve assembly 2 includes valve 1 21, valve 2 22 and valve 3 23; valve 1 21 is installed on the liquid inlet pipe 14, valve 2 22 is installed on the primary sampling pipe 15, and valve 3 23 is installed on the purge pipe 16.

[0059] When the dehydrator of this embodiment is used, when valve 1 21, valve 2 22 and valve 3 23 are all closed, the piston plate 12 can be driven down to form a vacuum sampling area in the settling chamber 111, thereby avoiding the introduction of external air into the collected oil-gas-water mixture, and improving the detection and analysis accuracy of the gas components in the collected oil. The present invention can extract the gas layer, oil layer, and water layer in sequence through the lifting and lowering control of the piston plate 12, and can extract the solid impurity layer by purging through the purge pipe 16; the inner cavity of the settling cylinder 11 can be cleaned by introducing gas or cleaning liquid through the purge pipe 16, further improving the sampling accuracy.

[0060] In some embodiments, the sedimentation cylinder assembly 1 also includes a slag discharge pipe 17, one end of which is connected to the primary sampling pipe 15 and corresponds to between valve two 22 and the sampling port 1112; the valve assembly 2 also includes valve four 24; valve four 24 is installed on the slag discharge pipe 17.

[0061] The slag discharge pipe 17 is specially used for centralized discharge of the solid impurity layer, which is convenient for centralized collection and subsequent chemical analysis.

[0062] In some embodiments, the sedimentation cylinder assembly 1 also includes a transparent sampling tube 18, the lower end of which is connected to the primary sampling tube 15 and corresponds to between valve two 22 and the sampling port 1112; the valve assembly 2 also includes valve seven 27; valve seven 27 is installed at the upper end of the transparent sampling tube 18.

[0063] The transparent sampling tube 18 is used to extract the gas layer and the water layer; the transparent sampling tube 18 facilitates visual observation of the gas-liquid state and color state of the sample, which is conducive to judging the sampling boundary point between the gas layer and the water layer; when extracting the oil layer through the primary sampling tube 15, the sampling boundary point between the oil layer and the water layer can also be judged by observing the color of the liquid overflowing into the transparent sampling tube 18.

[0064] In some embodiments, a secondary dehydrator 3 for separating emulsified water from oil is also included, and the secondary dehydrator 3 includes a centrifugal tank 31, a stirring shaft cylinder 32, an ultrasonic stirring blade 33, an energized bracket 34, a driving motor 35 and a collecting pipe 36;

[0065] A partition plate 311 is horizontally arranged at the upper part of the centrifugal tank 31 to divide the inner cavity of the centrifugal tank 31 into a gas collecting chamber 312 and a dehydration chamber 313; a liquid inlet 315 is arranged on the outer peripheral wall of the centrifugal tank 31 corresponding to the top of the dehydration chamber 313;

[0066] The stirring shaft barrel 32 is arranged in the middle of the dehydration chamber 313, and the upper end thereof vertically penetrates the partition plate 311 and extends to the top of the gas collecting chamber 312; the stirring shaft barrel 32 is rotatably connected to the partition plate 311 through a bearing; the power-on bracket 34 is installed in the lower part of the centrifugal tank 31, and the lower end of the stirring shaft barrel 32 is rotatably connected to the power-on bracket 34 through a bearing, and is electrically connected to the power-on bracket 34; the power-on bracket 34 is electrically connected to an external power source;

[0067] The ultrasonic stirring blade 33 is fixedly mounted on the peripheral wall of the stirring shaft cylinder 32; the peripheral wall of the stirring shaft cylinder 32 is provided with a collecting through hole 321 connected to the dehydration chamber 313 and an air outlet through hole 322 connected to the air collecting chamber 312; the driving motor 35 is mounted on the top of the centrifugal tank 31 and is transmission-connected to the stirring shaft cylinder 32 to drive the stirring shaft cylinder 32 to rotate, and drive the ultrasonic stirring blade 33 to rotate to form a stirring blade structure;

[0068] One end of the collecting pipe 36 vertically penetrates the outer peripheral wall of the centrifugal tank 31 and extends to the middle of the inner cavity of the centrifugal tank 31 and corresponds to the outer peripheral wall of the stirring shaft cylinder 32 to collect the dehydrated oil; the other end of the collecting pipe 36 is installed with a valve 5 25.

[0069] The ultrasonic stirring blade 33 has the dual functions of ultrasonic demulsification and dehydration and centrifugal stirring; the external power supply supplies power to the ultrasonic stirring blade 33 through the power-on bracket 34. After the ultrasonic stirring blade 33 is powered on, a sound field can be generated in the surrounding area to ultrasonically demulsify and dehydrate the oil; the driving motor 35 drives the stirring shaft cylinder 32 and the ultrasonic stirring blade 33 to rotate to achieve stirring and centrifuging of the oil; under the action of centrifugal force, water droplets in the oil move toward the inner wall of the dehydration chamber 313, and under the action of gravity, the water droplets converge along the inner wall of the dehydration chamber 313 to the bottom of the dehydration chamber 313; under the action of centrifugal force, the bubbles in the oil move toward the stirring shaft cylinder 32 and enter the inner cavity of the stirring shaft cylinder 32, and under the action of buoyancy, the bubbles move upward along the central cavity of the stirring shaft cylinder 32 to the gas collecting chamber 312, further realizing the separation of oil, gas and water; one end of the collecting pipe 36 extends to the middle of the inner cavity of the centrifugal tank 31, so as to collect purer oil.

[0070] In some embodiments, there are multiple ultrasonic stirring blades 33, and the multiple ultrasonic stirring blades 33 are arranged at intervals along the length direction of the stirring shaft tube 32;

[0071] The collecting tube 36 is located between two adjacent ultrasonic stirring blades 33 at one end inside the centrifugal tank 31 .

[0072] The plurality of ultrasonic stirring blades 33 can improve the efficiency of ultrasonic demulsification and dehydration, and can also improve the stirring and centrifugal effects.

[0073] Specifically, the ultrasonic stirring blade 33 is made by arranging an ultrasonic generator on the blade, and the ultrasonic generator is electrically connected to the powered bracket 34 .

[0074] In some embodiments, an inverted cone-shaped water collection chamber 314 connected to the dehydration chamber 313 is provided at the lower part of the inner cavity of the centrifugal tank 31; a drainage pipe 37 connected to the bottom of the inverted cone-shaped water collection chamber 314 is provided at the bottom end of the centrifugal tank 31; and a valve 6 26 is installed on the drainage pipe 37.

[0075] The inverted conical water collecting chamber 314 can facilitate the confluence and discharge of separated water in the oil.

[0076] In some embodiments, the centrifuge tank 31 is a transparent glass tank.

[0077] The centrifugal tank 31 is a transparent glass tank, which is convenient for visually observing the state of the internal centrifugal dehydration operation and facilitating the judgment of the stratification boundary point.

[0078] In some embodiments, an exhaust pipe connected to the gas collecting chamber 312 is connected to the top of the centrifugal tank 31, and the exhaust pipe is connected to an external gas collection container.

[0079] Another aspect of the present invention provides a dehydration method for stratified sampling, comprising a dehydrator for stratified sampling; the dehydration step comprises:

[0080] S1: Connect the connection port of the liquid inlet pipe 14 to the sampling valve of the oil delivery pipeline 4; place the piston plate 12 on the top of the inner cavity of the sedimentation cylinder 11, close the valve 1 21, the valve 2 22 and the valve 3 23, and the telescopic cylinder 13 drives the piston plate 12 to descend to build a sedimentation chamber 111 in a vacuum state;

[0081] S2: Open valve 1 21, introduce the oil-gas-water mixture in the oil delivery pipeline 4 into the sedimentation cylinder 11, and then close valve 1 21;

[0082] S3: Standing, so that the oil-gas-water mixture in the settling cylinder 11 is layered into a gas layer, an oil layer, a water layer and a solid impurity layer from top to bottom;

[0083] S4: The piston plate 12 is driven upward by the telescopic cylinder 13 to sequentially separate and extract gas, oil and water from the sampling port 1112;

[0084] S5: Connect the purge pipe 16 to an external gas source or a water pump to introduce gas or cleaning water into the sedimentation chamber 111 from the air inlet 1111, clean the solid impurity layer on the upper end of the piston plate 12, and discharge the solid impurities from the sampling port 1112.

[0085] In some embodiments, S4 includes the following steps:

[0086] S4.1: Close valve 22, open valve 7 27, and drive piston plate 12 upward through telescopic cylinder 13 to discharge and collect gas from transparent sampling tube 18;

[0087] S4.2: After the gas layer in the sedimentation chamber 111 is extracted, the first-level sampling tube 15 is connected to the liquid inlet 315 of the centrifugal tank 31, the valve seven 27 is closed, the valve two 22 is opened, and the piston plate 12 is driven to rise by the telescopic cylinder 13, and the liquid of the oil layer in the sedimentation cylinder 11 is injected from the first-level sampling tube 15 into the dehydration chamber 313 of the centrifugal tank 31;

[0088] S4.3: Close valve 22 and open valve 7 27; drive piston plate 12 upward through telescopic cylinder 13 to discharge and collect the water layer in sedimentation cylinder 11 from transparent sampling tube 18;

[0089] S4.4: Power the ultrasonic stirring blade 33 through the power-on bracket 34 to establish a sound field around it for ultrasonic demulsification and dehydration; start the drive motor 35 to drive the stirring shaft cylinder 32 to rotate, and drive the ultrasonic stirring blade 33 to stir the oil layer liquid, so that the oil layer liquid rotates and centrifuges for dehydration, and the separated water droplets move downward along the inner wall of the dehydration chamber 313 to the inverted cone-shaped water collection chamber 314 under the action of centrifugal force and gravity; under the action of centrifugal force and gravity, the bubbles in the oil layer liquid gather toward the stirring shaft cylinder 32 and enter the gas collection chamber 312 through the collecting through hole 321, the inner cavity of the stirring shaft cylinder 32, and the gas outlet through hole 322 in turn for storage;

[0090] S4.5: Open valve 5 25, and extract and separate the oil layer liquid with emulsified water removed through the collecting pipe 36;

[0091] S4.6: Turn off the drive motor 35, let it stand, open the valve 6 26, and extract the emulsified water obtained by centrifugal separation and sedimentation in the centrifuge tank 31 and the oil layer liquid with the emulsified water removed in sequence through the drain pipe 37.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0093] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A dehydrator capable of stratified sampling, characterized in that: include: A sedimentation cylinder assembly (1), the sedimentation cylinder assembly (1) comprising a sedimentation cylinder (11), a piston plate (12), a telescopic cylinder (13), a liquid inlet pipe (14), a primary sampling pipe (15) and a purge pipe (16); The piston plate (12) can be raised and lowered and slid and is sealedly connected in the inner cavity of the sedimentation cylinder (11), so as to define a sedimentation chamber (111) for separating free water in oil liquid in the inner cavity of the sedimentation cylinder (11) corresponding to the upper portion of the piston plate (12); the telescopic cylinder (13) is installed at the bottom end of the sedimentation cylinder (11) and is transmission-connected to the piston plate (12) so as to drive the piston plate (12) to rise and fall; The top of the sedimentation cylinder (11) is connected to a liquid inlet pipe (14), one end of the liquid inlet pipe (14) is connected to the sedimentation chamber (111), and the other end is a connection port connected to and connected to the oil delivery pipeline (4); an air inlet is provided on the inner circumferential wall of the sedimentation chamber (111) near the top, and a sampling port (1112) is provided on the inner circumferential wall of the sedimentation chamber (111) at a position horizontally opposite to the air inlet (1111); The purge pipe (16) is connected to the air inlet (1111); the primary sampling pipe (15) is connected to the sampling port (1112); A valve assembly (2); the valve assembly (2) comprises a valve 1 (21), a valve 2 (22) and a valve 3 (23); the valve 1 (21) is installed on the liquid inlet pipe (14), the valve 2 (22) is installed on the primary sampling pipe (15), and the valve 3 (23) is installed on the purge pipe (16).

2. A dehydrator capable of stratified sampling according to claim 1, characterized in that: The sedimentation cylinder assembly (1) further comprises a slag discharge pipe (17), one end of which is connected to the primary sampling pipe (15) and corresponds to between the second valve (22) and the sampling port (1112); the valve assembly (2) further comprises a fourth valve (24); the fourth valve (24) is installed on the slag discharge pipe (17).

3. A dehydrator capable of stratified sampling according to claim 1, characterized in that: The sedimentation cylinder assembly (1) further comprises a transparent sampling tube (18), the lower end of which is connected to the primary sampling tube (15) and corresponds to between the second valve (22) and the sampling port (1112); the valve assembly (2) further comprises a seventh valve (27); the seventh valve (27) is installed at the upper end of the transparent sampling tube (18).

4. A dehydrator capable of stratified sampling according to claim 1, characterized in that: It also includes a secondary dehydrator (3) for separating emulsified water in oil, wherein the secondary dehydrator (3) includes a centrifugal tank (31), a stirring shaft cylinder (32), an ultrasonic stirring blade (33), an energized bracket (34), a driving motor (35) and a collecting pipe (36); A partition plate (311) is horizontally provided at the upper inner portion of the centrifugal tank (31) to divide the inner cavity of the centrifugal tank (31) into a gas collecting chamber (312) and a dehydration chamber (313) at upper and lower portions; a liquid inlet (315) is provided on the outer peripheral wall of the centrifugal tank (31) corresponding to the top of the dehydration chamber (313); The stirring shaft barrel (32) is arranged in the middle of the dehydration chamber (313), and the upper end thereof vertically penetrates the partition plate (311) and extends to the top of the gas collecting chamber (312); the stirring shaft barrel (32) is rotatably connected to the partition plate (311); the power-on bracket (34) is installed in the lower part of the centrifugal tank (31), and the lower end of the stirring shaft barrel (32) is rotatably connected to the power-on bracket (34) and is electrically connected to the power-on bracket (34); the power-on bracket (34) is electrically connected to an external power source; The ultrasonic stirring blade (33) is fixedly mounted on the peripheral wall of the stirring shaft cylinder (32); the peripheral wall of the stirring shaft cylinder (32) is provided with a collecting through hole (321) connected to the dehydration chamber (313) and an air outlet through hole (322) connected to the air collecting chamber (312); the driving motor (35) is mounted on the top of the centrifugal tank (31) and is transmission-connected to the stirring shaft cylinder (32) to drive the stirring shaft cylinder (32) to rotate, and drive the ultrasonic stirring blade (33) to rotate to form a stirring blade structure; One end of the collecting pipe (36) vertically penetrates the outer peripheral wall of the centrifugal tank (31) and extends to the middle of the inner cavity of the centrifugal tank (31) and corresponds to the outer peripheral wall of the stirring shaft cylinder (32) to collect the dehydrated oil; the other end of the collecting pipe (36) is installed with a valve five (25).

5. A dehydrator capable of stratified sampling according to claim 4, characterized in that: There are a plurality of ultrasonic stirring blades (33), and the plurality of ultrasonic stirring blades (33) are arranged at intervals along the length direction of the stirring shaft cylinder (32); The collecting tube (36) is located at one end inside the centrifugal tank (31) and between two adjacent ultrasonic stirring blades (33).

6. A dehydrator capable of stratified sampling according to claim 4, characterized in that: The lower part of the inner cavity of the centrifugal tank (31) is provided with an inverted cone-shaped water collecting chamber (314) which is connected to the dehydration chamber (313); the bottom end of the centrifugal tank (31) is provided with a drainage pipe (37) which is connected to the bottom of the inverted cone-shaped water collecting chamber (314); and a valve six (26) is installed on the drainage pipe (37).

7. A dehydrator capable of stratified sampling according to claim 4, characterized in that: The centrifugal tank (31) is a transparent glass tank.

8. A dehydration method capable of stratified sampling, characterized in that: A dehydrator capable of stratified sampling comprising any one of claims 1 to 7; wherein the dehydration step comprises: S1: Connect the connection port of the liquid inlet pipe (14) to the sampling valve of the oil delivery pipeline (4); place the piston plate (12) at the top of the inner cavity of the sedimentation cylinder (11), close valve 1 (21), valve 2 (22) and valve 3 (23), and the telescopic cylinder (13) drives the piston plate (12) to descend, so as to construct a sedimentation chamber (111) in a vacuum state; S2: Open valve one (21), introduce the oil-gas-water mixture in the oil delivery pipeline (4) into the settling cylinder (11), and then close valve one (21); S3: standing still, so that the oil-gas-water mixture in the settling cylinder (11) is separated into gas layer, oil layer, water layer and solid impurity layer from top to bottom; S4: driving the piston plate (12) upward by the telescopic cylinder (13) to sequentially separate and extract gas, oil and water from the sampling port (1112); S5: Connect the purge pipe (16) to an external gas source or a water pump to introduce gas or cleaning water from the gas inlet (1111) into the sedimentation chamber (111), clean the solid impurity layer on the upper end of the piston plate (12), and discharge the solid impurities from the sampling port (1112).

9. A dehydration method for stratified sampling according to claim 8, characterized in that: S4 includes the following steps: S4.1: Close valve 2 (22), open valve 7 (27), and drive the piston plate (12) upward through the telescopic cylinder (13) to discharge and collect the gas from the transparent sampling tube (18); S4.2: After the gas layer in the sedimentation chamber (111) is extracted, the first-level sampling tube (15) is connected to the liquid inlet (315) of the centrifugal tank (31), the valve seven (27) is closed, the valve two (22) is opened, and the piston plate (12) is driven upward by the telescopic cylinder (13), so that the liquid of the oil layer in the sedimentation cylinder (11) is injected into the dehydration chamber (313) of the centrifugal tank (31) through the first-level sampling tube (15); S4.3: Close valve 2 (22) and open valve 7 (27); drive the piston plate (12) upward through the telescopic cylinder (13) to discharge and collect the water layer in the sedimentation cylinder (11) from the transparent sampling tube (18); S4.4: Power is supplied to the ultrasonic stirring blade (33) through the power-on bracket (34) to establish a sound field around the ultrasonic stirring blade (33) for ultrasonic demulsification and dehydration; the driving motor (35) is started to drive the stirring shaft cylinder (32) to rotate, and the ultrasonic stirring blade (33) is driven to stir the oil layer liquid, so that the oil layer liquid rotates and centrifuges for dehydration, and the separated water droplets move downward along the inner wall of the dehydration chamber (313) to the inverted cone-shaped water collection chamber (314) under the action of centrifugal force and gravity; under the action of centrifugal force and gravity, the bubbles in the oil layer liquid gather toward the stirring shaft cylinder (32) and enter the gas collection chamber (312) through the collecting through hole (321), the inner cavity of the stirring shaft cylinder (32), and the gas outlet through hole (322) in sequence for storage; S4.5: Open valve 5 (25) and extract and separate the oil layer liquid with emulsified water removed through the collection tube (36); S4.6: Turn off the drive motor (35), let it stand, open the valve six (26), and extract the emulsified water obtained by centrifugal separation and sedimentation in the centrifuge tank (31) and the oil layer liquid with the emulsified water removed in sequence through the discharge pipe (37).

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