CN113559562A

CN113559562A - Oil-gas mixed liquid filtering and degassing device

Info

Publication number: CN113559562A
Application number: CN202111037057.5A
Authority: CN
Inventors: 律昌硕; 余奎; 孙敏敏
Original assignee: Shanghai Yinuo Instrument Co Ltd
Current assignee: Shanghai Yinuo Instrument Co Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2021-10-29

Abstract

The invention discloses an oil-gas mixed liquid filtering and degassing device which comprises a filtering degassing device, wherein the filtering degassing device comprises a tank body, a liquid inlet pipeline is arranged on one side of the tank body, a liquid outlet pipeline is arranged on the other side of the tank body, a filter cylinder assembly with an inlet connected with the liquid inlet pipeline is arranged in the tank body, a defoaming device is arranged at a gas outlet at the top end of the tank body, the defoaming device comprises an outer barrel arranged at the gas outlet, a floating ball linkage device is arranged at the top end of the outer barrel, the bottom end of the outer barrel extends into the tank body, a lower defoaming plate is arranged at the bottom end of the outer barrel, and an upper defoaming plate is arranged on the inner side of the outer barrel. This oil-gas mixture filters degasification device makes the foam at oil-gas interface reduce, avoids appearing more foam at the liquid level in-process oil-gas interface that rises, effectively reduces the exhaust of filtering degasification ware in the liquid level in-process gas pipeline and contains the liquid condition, improves the gas-liquid separation effect, avoids filtering degasification ware gas pipeline to contain the problem of liquid.

Description

Oil-gas mixed liquid filtering and degassing device

Technical Field

The invention relates to the field of oil-gas separation, in particular to an oil-gas mixed liquid filtering and degassing device.

Background

In the metering and transporting process flow of crude oil and petroleum products, the filtering air eliminator is used for purifying solid foreign matters in liquid medium and eliminating gas so as to reduce the corrosion of the solid foreign matters and the gas to the wall of a conveying pipe and ensure the normal operation and accurate metering of metering equipment at the rear end of the filtering air eliminator. Therefore, the filtering degasser plays an important role in the metering transportation process of crude oil and petroleum products.

At present, most of filtering deaerators realize gas-liquid separation and filtration by adopting a mode of tank body expansion and a filter screen. After the gas-liquid two-phase fluid enters the filtering degasser, the pressure of the fluid in the tank body is reduced due to the increase of the space in the tank body of the filtering degasser, the volume of the gas dissolved and doped in the original liquid is increased, and the gas is separated out from the liquid and rises to the upper surface of the liquid to form an oil-gas interface. The gas-free or gas-less liquid under the oil-gas interface flows out of the filtering air eliminator from the outlet through the filter screen. Along with the gradual inflow of the gas-containing fluid, more and more gas is separated from the oil-gas interface, the gas pressure is gradually increased, the gas-liquid separation effect is reduced, and the liquid interface in the tank is pressed to be reduced. At the moment, the floating ball in the tank descends along with the liquid level and pulls the valve core of the exhaust valve to move downwards, the valve at the top end of the air eliminator is opened to discharge air from the top of the air eliminator, so that the pressure in the tank is reduced, the liquid level rises, and the filtering air eliminator recovers the air separation capacity.

However, in practical application, when the filter degasser is applied to thick oil or a liquid medium with high viscosity, a large amount of bubbles which are difficult to break are formed at an oil-gas interface by gas separated from the liquid, and the bubbles are still attached to the vicinity of the exhaust hole and the inner wall due to high viscosity in the process of liquid level descending. When the floating ball opens the exhaust valve downwards, bubbles are discharged out of the filtering air eliminator along with gas, so that a gas outlet of the filtering air eliminator contains liquid, the gas-liquid separation effect is influenced, crude oil is blocked in a gas pipeline, and the field maintenance work is increased.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an oil-gas mixed liquid filtering and degassing device, which solves the problems in the background art.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an oil gas mixture filters degassing unit, is including filtering the degasser, filters the degasser and includes a jar body, and one side of jar body is equipped with liquid inlet pipeline, and the opposite side of jar body is equipped with liquid outlet pipeline, jar internal cartridge filter subassembly that links to each other with liquid inlet pipeline that is equipped with of jar, the gas outlet department on jar body top installs fire fighting equipment.

The defoaming device comprises an outer barrel arranged at the gas outlet, a floating ball linkage device is arranged at the top end of the outer barrel, the bottom end of the outer barrel extends into the tank body, a lower defoaming plate is arranged at the bottom end of the outer barrel, and an upper defoaming plate is arranged on the inner side of the outer barrel.

Further limit, the upper defoaming plate adopts a perfect circular punching plate with the diameter equal to the inner diameter of the outer barrel.

Further limiting, the lower defoaming plate adopts a punching plate which is rolled into a conical surface and has a downward opening, and a generatrix of the punching plate forms thirty degrees with the horizontal plane.

Further inject, the filter degasser also comprises a filter vat fixing device arranged at the inner side of the tank body and positioned at the liquid inlet pipeline, and the filter vat component is arranged on the filter vat fixing device.

Further inject, the filter vat subassembly includes the filter vat barrel of rolling up the system by the board of punching a hole, and filter vat barrel top is fixed with the roof, and filter vat barrel inner wall is equipped with the filter screen, and the bottom and the filter vat end circle of filter vat barrel pass through bolted connection, and the circular recess that is used for embedding fixed filter vat barrel and filter screen is adopted to the circle at the bottom of the filter vat and is provided with the board of punching a hole, and the filter screen top extends to roof department and fixes through the bolt by the filter screen clamp plate, and the last welding of filter screen clamp plate has the handle.

Further inject, filter vat fixing device, filter screen clamp plate and roof all adopt for the oval annular steel sheet of forty-five degrees of slope, and the filter vat barrel is located the inboard bottom surface and the laminating of filter vat fixing device upper surface of filter vat fixing device top of filter vat fixing device.

Further inject, the floater aggregate unit is including installing the discharge valve body in outer bucket top, and discharge valve body's case is articulated with the top of floater through the floater connecting rod, and discharge valve body's bottom is fixed with the floater dead lever, and the other end of this floater dead lever is articulated with the top of floater.

The invention has the following beneficial effects: this oil-gas mixture filters degasification device makes the foam at oil-gas interface reduce, avoids appearing more foam at the liquid level in-process oil-gas interface that rises, effectively reduces the exhaust of filtering degasification ware in the liquid level in-process gas pipeline and contains the liquid condition, improves the gas-liquid separation effect, avoids filtering degasification ware gas pipeline to contain the problem of liquid.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a float ball linkage according to the present invention;

FIG. 3 is a schematic view of the defoaming apparatus of the present invention.

In the figure: 1. a floating ball linkage device; 11. a floating ball; 12. a floating ball connecting rod; 13. a floating ball fixing rod; 14. a valve core; 15. an exhaust valve body; 2. a filtering air eliminator; 21. a liquid inlet conduit; 22. a liquid outlet conduit; 23. a tank body; 24. a filter barrel fixing device; 3. a defoaming device; 31. a lower defoaming plate; 32. an outer tub; 33. an upper defoaming plate; 4. a filter vat assembly; 41. a filter barrel body; 42. filtering with a screen; 43. the bottom of the filter barrel is round; 44 a screen press plate; 45. a handle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an oil-gas mixture liquid filters degassing unit, including filtering degasser 2, filter degasser 2 is including a jar body 23, jar body 23 is the support component of whole equipment, one side of jar body 23 is equipped with liquid inlet pipeline 21, the opposite side of jar body 23 is equipped with liquid outlet pipeline 22, liquid inlet pipeline 21 and outlet pipeline 22 one end are equipped with the flange with the jar body coupling other end, jar internal cartridge filter subassembly 4 that is equipped with the entry and links to each other with liquid inlet pipeline 21 that is equipped with, foam breaker 3 is installed in the gas outlet department on jar body 23 top.

Referring to fig. 3, the defoaming device 3 includes an outer barrel 32 installed at the gas outlet, the floating ball linkage device 1 is installed at the top end of the outer barrel 32, the bottom end of the outer barrel 32 extends into the tank 23, a lower defoaming plate 31 is installed at the bottom end of the outer barrel 32, an upper defoaming plate 33 is installed at the inner side of the outer barrel 32, the upper defoaming plate 33 is a circular punching plate with a diameter equal to the inner diameter of the outer barrel 32, the lower defoaming plate 31 is a punching plate with a downward opening and made of a roll, and a bus and a horizontal plane of the punching plate are thirty degrees.

Referring to fig. 1, the filtering air eliminator 2 further comprises a filtering barrel fixing device 24 arranged at the inner side of the tank body 23 and located at the position of the liquid inlet pipeline 21, the filtering barrel assembly 4 comprises a filtering barrel body 41 rolled by a punching plate, a top plate is fixed at the top end of the filtering barrel body 41, a filter screen 42 is arranged on the inner wall of the filtering barrel body 41, the bottom end of the filtering barrel body 41 is connected with a filtering barrel bottom circle 43 through a bolt, the filtering barrel bottom circle 43 adopts the punching plate and is provided with a circular groove for embedding and fixing the filtering barrel body 41 and the filter screen 42, the top end of the filter screen 42 extends to the top plate and is fixed by a filter screen pressing plate 44 through a bolt, a handle 45 is welded on the filter screen pressing plate 44, the filtering barrel assembly 4 is convenient to detach, the filtering barrel fixing device 24, the filter screen pressing plate 44 and the top plate all adopt elliptical annular steel plates with inclination of forty-five degrees, the filtering barrel body 41 is located at the inner side of the filtering barrel fixing device 24, and the bottom surface of the top plate is attached to the upper surface of the filtering barrel fixing device 24, the filter basket securing means 24 is used to provide circumferential and axial positioning for the filter basket assembly 4.

Referring to fig. 2, the float ball linkage device 1 includes an exhaust valve body 15 installed at the top end of the outer tub 32, a valve core 14 of the exhaust valve body 15 is hinged to the top of the float ball 11 through a float ball connecting rod 12, a float ball fixing rod 13 is fixed at the bottom end of the exhaust valve body 15, the other end of the float ball fixing rod 13 is hinged to the top of the float ball 11, and the float ball 11 is in contact with an upper defoaming plate 33 under the liquid-free condition.

When the filtering and degassing device 2 works, a solid-liquid-gas three-phase mixed fluid enters the tank body 23 through the liquid inlet pipeline 21 and enters the interior of the filter barrel body 41 through the 45-degree opening of the filter barrel component 4, the liquid level in the tank body 23 can be higher than the inlet pipeline 21 because the space of the tank body 23 is large and the pressure in the tank body 23 is lower than that of the inlet pipeline 21, and meanwhile, because the pressure in the tank body 23 is reduced, the volume of gas dissolved and doped in the original fluid is increased, and the gas is separated from the liquid phase and rises to the liquid surface to form bubbles; in the process that the bubbles rise along with the liquid level, the bubbles firstly contact the lower defoaming plate 31, and the bubbles are broken by the tangential friction force of the lower defoaming plate 31 in the process of contacting with the lower defoaming plate 31;

when the liquid level continues to rise and reaches upper defoaming board 33, the foam and the contact of upper defoaming board 33 are broken by friction force, and after twice defoaming, the foam at the oil-gas interface can be reduced, so that more foam at the oil-gas interface in the liquid level rising process is avoided, and the liquid containing condition of the exhaust gas of filtering and degassing device 2 in the gas pipeline in the liquid level rising process is effectively reduced. When the liquid level exceeds the floating ball 11, the floating ball 11 drives the floating ball connecting rod 12 to jack the valve core 14 under the action of buoyancy, and the exhaust valve is closed. When more gas is separated from the liquid and a large amount of gas is accumulated at the top of the filtering air eliminator 2, the top pressure is increased, the liquid level is forced to fall, the floating ball 11 falls along with the liquid level and pulls the valve core 14 to move downwards, and the filtering air eliminator 2 exhausts gas and circulates the process. After the liquid entering the filtering air eliminator 2 is filtered by the filter screen 42 of the filter barrel assembly 4, solid impurities are left in the filter screen 42, and the liquid and a small amount of gas flow out of the filtering air eliminator 2 through the liquid outlet pipe 22.

In filtering 2 working processes of gas elimination ware, the liquid level in the jar body 23 constantly goes up and down, and the foam at oil gas interface contacts many times with defoaming plate 31 of the lower floor and the defoaming plate 33 of upper strata of defoaming device 3, gets rid of the foam at oil gas interface through the frictional force of defoaming plate, has improved the effect of the whole oil-gas separation of device, avoids appearing liquid in the 2 gas pipeline of filtering gas elimination ware.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a mixed liquid of oil gas filters degasser, includes and filters degasser (2), filters degasser (2) including a jar body (23), and one side of jar body (23) is equipped with liquid inlet pipeline (21), and the opposite side of jar body (23) is equipped with liquid outlet pipeline (22), its characterized in that: a filter cylinder assembly (4) with an inlet connected with a liquid inlet pipeline (21) is arranged in the tank body (23), and a defoaming device (3) is arranged at a gas outlet at the top end of the tank body (23);

the defoaming device (3) comprises an outer barrel (32) arranged at the gas outlet, a floating ball linkage device (1) is arranged at the top end of the outer barrel (32), the bottom end of the outer barrel (32) extends into the tank body (23), a lower defoaming plate (31) is arranged at the bottom end of the outer barrel (32), and an upper defoaming plate (33) is arranged on the inner side of the outer barrel (32).

2. The oil-gas mixture filtering and degassing device of claim 1, wherein: the upper defoaming plate (33) is a circular punching plate with the diameter equal to the inner diameter of the outer barrel (32).

3. The oil-gas mixture filtering and degassing device of claim 1, wherein: the lower defoaming plate (31) is a punching plate which is rolled into a conical surface and has a downward opening, and a generatrix and a horizontal plane of the punching plate form thirty degrees.

4. The oil-gas mixture filtering and degassing device of claim 1, wherein: the filtering air eliminator (2) further comprises a filtering barrel fixing device (24) which is arranged on the inner side of the tank body (23) and is positioned at the liquid inlet pipeline (21), and the filtering barrel assembly (4) is arranged on the filtering barrel fixing device (24).

5. The oil-gas mixture filtering and degassing device according to claim 4, wherein: the filter vat subassembly (4) include by the filter vat barrel (41) of punching the board book system, filter vat barrel (41) top is fixed with the roof, filter vat barrel (41) inner wall is equipped with filter screen (42), the bottom and the filter vat end circle (43) of filter vat barrel (41) pass through bolted connection, the round (43) adoption is punched the board and is provided with the circular recess that is used for imbedding fixed filter vat barrel (41) and filter screen (42) at the bottom of the filter vat, filter screen (42) top extends to roof department and is fixed through the bolt by filter screen clamp plate (44), the welding has handle (45) on filter screen clamp plate (44).

6. The oil-gas mixture filtering and degassing device of claim 5, wherein: the filter vat fixing device (24), the filter screen pressing plate (44) and the top plate are all oval annular steel plates with the inclination of forty-five degrees, and the filter vat cylinder body (41) is located on the inner side of the filter vat fixing device (24) and the bottom surface of the top plate is attached to the upper surface of the filter vat fixing device (24).

7. The oil-gas mixture filtering and degassing device according to any one of claims 1 to 6, wherein: the floating ball linkage device (1) comprises an exhaust valve body (15) arranged at the top end of an outer barrel (32), a valve core (14) of the exhaust valve body (15) is hinged with the top of a floating ball (11) through a floating ball connecting rod (12), a floating ball fixing rod (13) is fixed at the bottom end of the exhaust valve body (15), and the other end of the floating ball fixing rod (13) is hinged with the top of the floating ball (11).