CN218130133U - Defoaming tank and defoaming module for natural gas foam drainage gas production system - Google Patents

Abstract

The utility model relates to a natural gas foam drainage gas production system's defoaming, in particular to natural gas foam drainage gas production system is with defoaming jar and defoaming module. The defoaming module for the natural gas foam drainage gas production system comprises a defoaming tank, the defoaming tank comprises a tank body, a stirrer is arranged in the tank body, and the stirrer comprises a vertically arranged rotating shaft and stirring blades fixed on the rotating shaft; the stirrer in the tank body is provided with at least two parts, the stirring blades on at least one part of the stirrer and the stirring blades on the other part of the stirrer are arranged in a staggered manner along the vertical direction, and a rotation overlapping area overlapping along the vertical direction is formed during rotation; the top of the tank body is provided with a defoaming agent filling port which is positioned right above the rotation overlapping area; and a defoaming agent filling port at the top of the defoaming tank is connected with a defoaming agent storage tank, and a control valve is arranged on a connecting pipeline between the defoaming agent storage tank and the defoaming agent filling port. Above-mentioned scheme can solve the problem that the defoaming reaction efficiency of defoaming jar is low among the prior art.

Description

Defoaming tank and defoaming module for natural gas foam drainage gas production system

Technical Field

The utility model relates to a natural gas foam drainage gas production system's defoaming, in particular to natural gas foam drainage gas production system is with defoaming jar and defoaming module.

Background

Natural gas and bottom water or side water are often a storage system, and along with the exploitation process of natural gas, the elastic energy of a water body can drive water to flow into a gas reservoir along a high-permeability zone. In the middle and later periods of natural gas exploitation, the gas pressure in a gas well is small, the liquid carrying capacity of natural gas is weakened, and the problem of liquid accumulation at the bottom of the well is easy to occur. The water plugging method mainly starts with two aspects, namely, the water plugging method is used for separating a gas production layer from a water production layer or building a water-blocking barrier in an oil reservoir by adopting methods such as mechanical blocking, chemical blocking and the like, so that the cost is high and the construction is inconvenient. The other is water drainage, the main principle is to drain accumulated water in a shaft, such as foam water drainage gas production, speed pipe column water drainage gas production, plunger gas lift water drainage gas production and the like, and the term of the technology is called a water drainage gas production method.

The foam water drainage gas production is a common water drainage gas production process, and the basic principle is that a foaming agent (a surfactant capable of foaming when meeting water) is injected from a well head to a well bottom, after the accumulated water at the well bottom is contacted with the foaming agent, a large amount of low-density water-containing foam is generated by means of stirring of natural gas flow, so that the critical liquid carrying flow is greatly reduced, the accumulated liquid is carried to the ground along with the gas flow, and the accumulated liquid in a shaft is discharged. The existing natural gas foam drainage gas production system comprises a foaming pump and a defoaming pump which are connected with a gas production tree, wherein the defoaming pump is used for pumping a defoaming agent into an atomizer and adding the defoaming agent into a solution tank connecting pipeline for conveying a mined foam mixture through the atomizer, so that the foam mixture starts to be defoamed in the flowing process in the conveying pipeline and then is discharged into a defoaming tank (namely the solution tank in the patent document), the defoaming tank comprises a tank body, a stirrer is arranged in the tank body, and the stirrer can stir the foam mixture in the defoaming tank, so that the defoaming agent can fully play a role, and the purpose of defoaming is realized.

However, the cross section of the connecting pipeline of the defoaming tank is limited, the flow rate is high, and when a foam mixture is conveyed in the connecting pipeline of the defoaming tank, the defoaming agent is difficult to fully contact with foam, so that the defoaming reaction efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a natural gas foam drainage is defoaming jar and defoaming module for gas production system can solve the problem that the defoaming reaction efficiency of defoaming jar is low among the prior art.

The utility model discloses in adopt following technical scheme:

the defoaming tank for the natural gas foam drainage gas production system comprises a tank body, wherein a stirrer is arranged in the tank body, and the stirrer comprises a rotating shaft and stirring blades, wherein the rotating shaft is vertically arranged, and the stirring blades are fixed on the rotating shaft; the stirrer in the tank body is provided with at least two positions, the stirring blades on at least one stirrer and the stirring blades on the other stirrer are arranged in a staggered manner along the vertical direction, and a rotation overlapping area overlapping along the vertical direction is formed during rotation; and the top of the tank body is provided with a defoaming agent filling port which is positioned right above the rotation overlapping area.

Above-mentioned technical scheme's beneficial effect is, the gyration overlap region that the stirring vane on the agitator more than two forms is equipped with the defoaming agent with the top of the jar body and adds the mouth and corresponds, add to annotate on the defoaming agent of the jar body can adhere to the corresponding stirring vane of different agitators, at stirring vane pivoted in-process, the defoaming agent of adhering to on the stirring vane can the direct contact foam, and more extensive ground and jar internal foam contact, thereby make the defoaming reaction more abundant, be favorable to improving defoaming efficiency, only stir by single agitator among the prior art and compare, the problem that the defoaming reaction efficiency of defoaming jar is low among the prior art can be solved.

Further: the stirring blade is a fan-shaped annular blade and is provided with a fan-shaped annular surface.

The above-mentioned technical scheme's that further prescribes a limit to beneficial effect is, can form great foam area of contact and defoaming agent adhesion area, is favorable to promoting the defoaming effect.

Further: the area occupied by the fan ring-shaped blades in the circumferential direction is not smaller than the area occupied by the spaces between the fan ring-shaped blades in the circumferential direction.

The technical scheme has the advantages that the larger the area of the fan-shaped blades is, the larger the area is, the more the contact reaction area of foam and the defoaming agent is favorably improved, and the intervals among the fan-shaped blades can ensure that the defoaming agent added from the defoaming agent filling port downwards passes through to be attached to the stirring blades at different heights to form three-dimensional defoaming.

Further: at least two groups of stirring blades are arranged on the rotating shaft of each stirrer, the stirring blades in the same group are fixed on a blade connecting seat, and the blade connecting seats are coaxially fixed on the corresponding rotating shafts; the stirring blades of each group are arranged at intervals along the vertical direction.

The technical scheme has the advantages that the stirring blade is convenient to fix and manufacture.

Further, the method comprises the following steps: a feeding hole is formed in one radial side of the tank body, a fiber bundle corresponding to the feeding hole is arranged on a rotating shaft of one stirrer, and the fiber bundles are distributed along the circumferential direction of the rotating shaft and used for dispersing foam during rotation; the fiber bundle has one end connected to the rotating shaft and the other end suspended in the radial direction of the rotating shaft, or the fiber bundle is made of a flexible material, has one end connected to the rotating shaft and the other end drooping when the rotating shaft is stationary and stretched by centrifugal force when the rotating shaft rotates.

Above-mentioned technical scheme's that further prescribes a limit to beneficial effect is, can carry out rotatory acceleration to the foam attached to it when the tow rotates for the foam is thrown to the remaining region in the jar body under the effect of rotatory centrifugal force, is favorable to increasing reaction area's area, avoids foam gathering, jam in feed inlet department.

Further: the rotating shaft is provided with a fiber connecting seat, and the end part of the fiber bundle is fixed on the fiber connecting seat.

The technical scheme further limited has the advantages of convenient fixation of the fiber bundle and convenient manufacture.

Further: the rotating shaft comprises a guide section, a guide sliding groove is arranged on the peripheral surface of the guide section, the guide sliding groove is oval, and comprises a top end point and a bottom end point which are respectively positioned at two radial sides of the guide section, and two smooth transition parts connected between the top end point and the bottom end point; the fiber connecting seat is rotatably sleeved on the guide section, and a guide pin which is matched with the guide chute in a guide way is arranged on the inner wall of the fiber connecting seat and is used for enabling the fiber connecting seat to slide along the guide chute when the stirrer rotates so as to move up and down.

Above-mentioned technical scheme who further prescribes a limit to's beneficial effect is, through the cooperation of guide spout and uide pin, the fibre connecting seat can produce along the guide spout and remove when the pivot rotates for reciprocating motion about the fibre connecting seat can be under the direction of guide spout, and then makes the tow can reciprocate, catches more foams, thereby avoids foam gathering, jam better.

Further: the upper end and the lower end of the guide section are respectively provided with an axial stop structure for limiting the upper and lower movement limits of the fiber connecting seat.

The technical scheme has the advantages that deformation caused by overlarge stress of the guide pin can be avoided, and the service life and the working stability are favorably prolonged.

Further: the axial stopping structure is an annular flange arranged at the upper end and the lower end of the guide section.

The technical scheme has the advantages that the annular flange is simple in structure and convenient to process.

The defoaming module for the natural gas foam drainage gas production system comprises a defoaming tank connected with an output pipeline of a Christmas tree, wherein the defoaming tank comprises a tank body, a stirrer is arranged in the tank body, and the stirrer comprises a rotating shaft which is vertically arranged and a stirring blade which is fixed on the rotating shaft; the stirrer in the tank body is provided with at least two positions, the stirring blades on at least one stirrer and the stirring blades on the other stirrer are arranged in a staggered manner along the vertical direction, and a rotation overlapping area overlapping along the vertical direction is formed during rotation; the top of the tank body is provided with a defoaming agent filling port, and the defoaming agent filling port is positioned right above the rotation overlapping area; and a defoaming agent filling port at the top of the defoaming tank is connected with a defoaming agent storage tank, and a control valve for controlling the filling speed of the defoaming agent is arranged on a connecting pipeline between the defoaming agent storage tank and the defoaming agent filling port.

Above-mentioned technical scheme's beneficial effect is, the gyration overlap region that the stirring vane on the agitator more than two forms is equipped with the defoaming agent with the top of the jar body and adds the mouth and corresponds, add to annotate on the defoaming agent of the jar body can adhere to the corresponding stirring vane of different agitators, at stirring vane pivoted in-process, the defoaming agent of adhering to on the stirring vane can the direct contact foam, and more extensive ground and jar internal foam contact, thereby make the defoaming reaction more abundant, be favorable to improving defoaming efficiency, only stir by single agitator among the prior art and compare, the problem that the defoaming reaction efficiency of defoaming jar is low among the prior art can be solved, and the feed speed of defoaming agent in the control valve defoaming agent storage tank can be controlled, can make full use of defoaming agent, guarantee good defoaming effect, avoid extravagant.

Further: the stirring blade is a fan-shaped annular blade and is provided with a fan-shaped annular surface.

The above-mentioned technical scheme's that further prescribes a limit to beneficial effect is, can form great foam area of contact and defoaming agent adhesion area, is favorable to promoting the defoaming effect.

Further: the area occupied by the fan ring-shaped blades in the circumferential direction is not smaller than the area occupied by the spaces between the fan ring-shaped blades in the circumferential direction.

The technical scheme has the advantages that the larger the area of the fan-shaped blades is, the more the contact reaction area of foam and the defoaming agent is favorably increased, and the intervals among the fan-shaped blades can ensure that the defoaming agent added from the defoaming agent filling port downwards passes through to be attached to the stirring blades at different heights to form three-dimensional defoaming.

Further: at least two groups of stirring blades are arranged on the rotating shaft of each stirrer, the stirring blades in the same group are fixed on a blade connecting seat, and the blade connecting seats are coaxially fixed on the corresponding rotating shafts; the stirring blades of each group are arranged at intervals along the vertical direction.

The technical scheme has the advantages that the stirring blade is convenient to fix and manufacture.

Further: a feeding hole is formed in one radial side of the tank body, a fiber bundle corresponding to the feeding hole is arranged on a rotating shaft of one stirrer, and the fiber bundles are distributed along the circumferential direction of the rotating shaft and used for dispersing foam during rotation; the fiber bundle has one end connected to the rotating shaft and the other end suspended in the radial direction of the rotating shaft, or the fiber bundle is made of a flexible material, has one end connected to the rotating shaft and the other end drooping when the rotating shaft is stationary and stretched by centrifugal force when the rotating shaft rotates.

Above-mentioned technical scheme's that further prescribes a limit to beneficial effect is, can carry out rotatory acceleration to the foam attached to it when the tow rotates for the foam is thrown to the remaining region in the jar body under the effect of rotatory centrifugal force, is favorable to increasing reaction area's area, avoids foam gathering, jam in feed inlet department.

Further: the rotating shaft is provided with a fiber connecting seat, and the end part of the fiber bundle is fixed on the fiber connecting seat.

The technical scheme further limited has the advantages of convenient fixation of the fiber bundle and convenient manufacture.

Further: the rotating shaft comprises a guide section, a guide sliding groove is arranged on the peripheral surface of the guide section, the guide sliding groove is oval, and comprises a top end point and a bottom end point which are respectively positioned at two radial sides of the guide section, and two smooth transition parts connected between the top end point and the bottom end point; the fiber connecting seat is rotatably sleeved on the guide section, and a guide pin which is matched with the guide chute in a guide way is arranged on the inner wall of the fiber connecting seat and is used for enabling the fiber connecting seat to slide along the guide chute when the stirrer rotates so as to move up and down.

The above-mentioned technical scheme who further prescribes a limit to's beneficial effect is, through the cooperation of guide spout and uide pin, the fibre connecting seat can produce along the guide spout and remove when the pivot rotates for fibre connecting seat can be reciprocating motion from top to bottom under the direction of guide spout, and then makes the tow can reciprocate, catches more foams, thereby avoids foam gathering, jam better.

Further: the upper end and the lower end of the guide section are respectively provided with an axial stop structure for limiting the upper and lower movement limits of the fiber connecting seat.

The technical scheme has the advantages that deformation caused by overlarge stress of the guide pin can be avoided, and the service life and the working stability are favorably prolonged.

Further: the axial stop structure is an annular flange arranged at the upper end and the lower end of the guide section.

The technical scheme has the advantages that the annular flange is simple in structure and convenient to process.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of the natural gas foam drainage gas production system of the present invention;

fig. 2 is a schematic structural diagram of the defoaming tank in fig. 1, and is also a schematic structural diagram of embodiment 1 of the defoaming tank for a natural gas foam drainage gas production system of the present invention;

FIG. 3 is a schematic view of the construction of the agitator of FIG. 2;

fig. 4 is a schematic view of the mounting structure of the fiber connector holder at a in fig. 2;

FIG. 5 is a schematic view of the guide section of the rotary shaft as viewed from a side in the radial direction of the rotary shaft;

fig. 6 is a schematic view of the guide section of the rotary shaft as viewed along the other side in the radial direction of the rotary shaft.

The names of the components corresponding to the corresponding reference numerals in the drawings are: 11. an output line; 12. a water outlet pipe; 13. a water storage tank; 21. a defoaming tank; 22. a tank body; 23. a feed inlet; 24. a discharge port; 25. a defoaming agent filling port; 26. a drive motor; 31. a stirrer; 32. a rotating shaft; 33. a stirring blade; 34. a blade connecting seat; 35. a guide section; 36. a guide chute; 37. a top end point; 38. a bottom endpoint; 39. a smooth transition portion; 310. an annular flange; 311. a bearing; 41. a fiber bundle; 42. a fiber connecting seat; 43. a guide pin; 51. a defoaming agent storage tank; 52. and controlling the valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention, i.e., the described embodiments are merely illustrative of some, but not all, of the embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that, in the detailed description of the present invention, terms such as "first" and "second" may be used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations. Also, terms such as "comprises," "comprising," or any other variation thereof, which may be present, 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. Without further limitation, the statement that "comprises a … …," or the like, may occur does not preclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the elements.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model discloses well natural gas foam drainage is embodiment 1 of defoaming module for gas production system:

as shown in fig. 1, the defoaming module for natural gas foam drainage gas production system is used for connecting on the output pipeline 11 of the christmas tree, and defoams the foam mixture discharged from the christmas tree, including a defoaming tank 21 and a defoaming agent storage tank 51 connected to the top of the defoaming tank 21, and further including a control valve 52 arranged on the connecting pipeline between the defoaming agent storage tank 51 and the defoaming tank 21. The bottom of the defoaming tank 21 is connected with a water outlet pipe 12 for discharging water formed after the defoaming reaction into a water storage tank 13. The output line 11 and the storage tank 13 of the christmas tree are prior art and the specific structure will not be described in detail here.

The defoaming tank 21 is structured as shown in fig. 2, and includes a tank 22, the tank 22 is cylindrical, two stirrers 31 are disposed inside the tank and symmetrically arranged along the axis of the tank 22, each stirrer 31 includes a rotating shaft 32 and a stirring blade 33, the rotating shaft 32 is arranged along a vertical axis, and the upper and lower ends are respectively supported on a bearing seat on the tank 22 through a bearing 311. The top of the tank 22 is provided with a driving motor 26 for driving the rotation of the rotating shaft 32. The top of one radial side of the tank body 22 is provided with a feed inlet 23 for entering the foam mixture conveyed by the output pipeline 11 of the Christmas tree; the bottom of the radial other side of the tank body 22 is provided with a discharge hole 24, and the water outlet pipe 12 is connected with the discharge hole 24. In other embodiments, the can 22 may be other shapes, such as being configured as a rectangular parallelepiped.

As shown in fig. 2, the stirrer 31 far from the discharge port 24 and the stirrer 31 near the feed port 23 are provided with two sets of stirring blades 33, as shown in fig. 3, the same set of stirring blades 33 are fixed on a circular blade connecting seat 34, and the blade connecting seat 34 is coaxially fixed on the corresponding rotating shaft 32. The stirring blade 33 is a fan-ring-shaped blade, similar to a fan blade, having a fan-ring-shaped surface formed with a certain width to attach more defoaming agent. In order to ensure superior defoaming agent adhesion capability, it is preferable that the area occupied in the circumferential direction by the fan ring blades is not smaller than the area occupied in the circumferential direction by the spaces between the fan ring blades. The stirring blades 33 on the stirrer 31 far away from the discharge port 24 and the stirring blades 33 on the stirrer 31 near the feed port 23 are staggered in the up-down direction, and the distance between the rotating shafts of the two stirrers 31 is smaller than the sum of the turning radii of the stirring blades 33 of the two stirrers 31, so that the stirring blades 33 have turning overlapping regions which are overlapped in the up-down direction when the two stirrers 31 rotate.

As shown in fig. 2, the top of the tank body 22 is provided with an antifoaming agent filling port 25, and the antifoaming agent filling port 25 is located right above the rotation overlapping region. The defoaming agent storage tank 51 is connected to the defoaming agent filling port 25 of the defoaming tank 21 through the above-described connecting line. The control valve 52 on the connecting pipeline of defoaming agent storage tank 51 and defoaming jar 21 is solenoid valve, has the manual function of opening concurrently, and the remote control defoaming agent of being convenient for gets into the dose in the defoaming jar 21, reduces unnecessary extravagant. The motor is preferably a low speed motor so that the defoaming agent can be uniformly dispersed on the surface of the rotating stirring fan blade, and the defoaming agent can be fully contacted with the foam.

The rotating shaft 32 of the stirrer 31 near the feed port 23 is provided with fiber bundles 41, the fiber bundles 41 are distributed along the circumference of the rotating shaft 32, one end of the fiber bundles is connected to the rotating shaft 32, and the other end of the fiber bundles is suspended towards the radial outer side of the rotating shaft 32. The fiber bundle 41 corresponds in its entirety to the feed port 23 for throwing out the foam attached thereto radially outward of the agitator 31 while rotating, so that the foam entered into the agitator 31 is dispersed throughout the space of the agitator 31. The material of the fiber bundle 41 may be glass fiber, plastic fiber, or the like. In other embodiments, the fiber bundle 41 may be made of a flexible material, one end of which is connected to the shaft 32 and the other end of which hangs down when the shaft 32 is stationary and stretches by centrifugal force when the shaft 32 rotates.

Specifically, as shown in fig. 3 and 4, the rotating shaft 32 is provided with an annular fiber connecting seat 42, the fiber bundle 41 is divided into four parts along the circumferential direction, and the end parts of the fiber bundle are fixed on the fiber connecting seat 42; a guide sleeve is fixed on the rotating shaft 32 to form a guide section 35, and an oval guide chute 36 is arranged on the outer peripheral surface of the guide section 35. As shown in fig. 5 and 6, the guide chute 36 includes a top end point 37 and a bottom end point 38, the top end point 37 and the bottom end point 38 are respectively located on different radial sides of the guide section 35, the top end point 37 is higher than the bottom end point 38, and the top end point 37 and the bottom end point 38 are connected by two smooth transition portions 39 respectively located on different radial sides of the guide section 35. The fiber connecting base 42 is movably sleeved on the guiding section 35 along the up-down direction, and a guiding pin 43 which is in guiding fit with the guiding chute 36 is arranged on the inner wall of the fiber connecting base 42, so that the fiber connecting base 42 slides along the guiding chute 36 to move up and down when the stirrer 31 rotates. In order to improve reliability and service life and avoid deformation and failure of the guide pin 43, the upper and lower ends of the guide section 35 are provided with annular flanges 310 for limiting the upper and lower movement limits of the fiber connecting seat 42, the annular flanges 310 form an axial stop structure, and when the guide pin 43 on the fiber connecting seat 42 moves to the top end point 37 and the bottom end point 38 of the guide chute 36, the annular flanges 310 and the fiber connecting seat 42 form a stop in the up-down direction, so as to avoid the guide pin 43 from being impacted.

When the system operates, the foam mixture generated by drainage of the foam drainage gas production method upwards enters the defoaming tank 21 through the connecting pipeline, the control valve 52 on the connecting pipeline is adjusted according to the foam elimination condition in the defoaming tank 21, so that the defoaming agent is continuously added into the defoaming tank 21 at a certain speed, and the defoaming agent added into the defoaming tank 21 falls under the action of self gravity. Because the defoaming agent filling port 25 corresponds to the rotation overlapping area corresponding to the stirring blades 33 of the two stirrers 31, the defoaming agent in the falling process can be attached to the stirring blades 33 to a large extent, and the defoaming agent can be fully contacted with the foam along with the rotation of the stirring blades 33, so that the contact reaction frequency of the foam and the defoaming agent is accelerated, and the defoaming efficiency is effectively improved.

Simultaneously, can drive fibre connecting seat 42 and tow 41 and rotate when being close to the agitator 31 of feed inlet 23 rotation, tow 41 can carry out rotatory acceleration to the foam attached to it for the foam is thrown to the remaining region in the jar body 22 under the effect of rotatory centrifugal force, avoids foam gathering, blocks up in feed inlet 23 department. And, when the pivot rotated, the fibre connecting seat 42 can be followed guide chute 36 and produced the removal for fibre connecting seat 42 can be in guide chute 36's direction reciprocating motion from top to bottom, and then make tow 41 can reciprocate, catch more foams, avoid foam gathering, jam better, make the foam disperse to whole defoaming jar 21 in, contact more evenly with the defoaming agent, thereby make full use of defoaming agent, and improve defoaming efficiency.

The utility model discloses well natural gas foam drainage is embodiment 2 of defoaming module for gas production system:

the present embodiment is different from embodiment 1 in that: in example 1, two agitators 31 are provided in the tank 22. In this embodiment, the three stirrers 31 in the tank 22 are arranged in a regular triangle, and the stirring blades 33 of the three stirrers 31 and the center of the triangle form a rotation overlapping region.

Of course, in other embodiments, the number of the agitators 31 may be set to be larger, and it is not necessary to form the revolution overlapping area for the agitating blades 33 of all the agitators 31, because the larger the number of the agitators 31, the easier the radius of the agitating blades 33 is limited to avoid interference, and the harder it is to form the revolution overlapping area for the agitating blades 33 of all the agitators 31.

The utility model discloses well natural gas foam drainage is embodiment 3 of defoaming module for gas production system:

the present embodiment is different from embodiment 1 in that: in example 1, the stirring vanes 33 are fan-shaped annular vanes. In this embodiment, the stirring blade 33 is a rectangular blade. In addition, the area occupied by the stirring blades in the circumferential direction can be adjusted according to defoaming requirements.

The utility model discloses well natural gas foam drainage is embodiment 4 of defoaming module for gas production system:

the present embodiment is different from embodiment 1 in that: in embodiment 1, the guide section 35 of the rotary shaft 32 is formed by a guide sleeve. In the present embodiment, the guiding section 35 of the rotating shaft 32 is integrally formed with the rest of the rotating shaft 32.

In the above embodiment, each of the agitators 31 is provided with two sets of agitating blades 33. In this embodiment, the number of the sets of the stirring blades 33 on each stirrer 31 can also be adjusted according to the requirement, for example, a set of the stirring blades 33 is provided, and if three sets of the stirring blades 33 are provided, if the numbers of the stirring blades 33 on at least two of the stirrers 31 are different, two sets of the stirring blades 33 are provided on one stirrer 31, and three sets of the stirring blades 33 are provided on one stirrer 31.

The utility model discloses well natural gas foam drainage is embodiment of defoaming jar for gas production system: the embodiment of the defoaming tank for a natural gas foam drainage and gas production system, that is, the defoaming tank 21 described in any embodiment of the defoaming module for a natural gas foam drainage and gas production system, will not be described in detail herein.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The defoaming tank for the natural gas foam drainage gas production system comprises a tank body (22), wherein a stirrer (31) is arranged in the tank body (22), and the stirrer (31) comprises a rotating shaft (32) which is vertically arranged and a stirring blade (33) which is fixed on the rotating shaft (32); the device is characterized in that the stirrer (31) in the tank body (22) is provided with at least two positions, the stirring blades (33) on at least one stirrer (31) and the stirring blades (33) on the other stirrer (31) are staggered in the vertical direction, and a rotary overlapping area overlapping in the vertical direction is formed during rotation; and the top of the tank body (22) is provided with a defoaming agent filling port (25), and the defoaming agent filling port (25) is positioned right above the rotation overlapping area.

2. The defoaming tank for a natural gas foam drainage gas production system according to claim 1, wherein the stirring blade (33) is a fan-shaped annular blade having a fan-shaped annular surface.

3. The defoaming tank for a natural gas foam drainage gas production system according to claim 2, wherein an area occupied by the fan-shaped annular blades in the circumferential direction is not smaller than an area occupied by spaces between the fan-shaped annular blades in the circumferential direction.

4. The defoaming tank for a natural gas foam drainage gas production system according to claim 1, 2 or 3, wherein at least two groups of stirring blades (33) are arranged on the rotating shaft (32) of each stirrer (31), the stirring blades (33) in the same group are fixed on one blade connecting seat (34), and the blade connecting seats (34) are coaxially fixed on the corresponding rotating shaft (32); the stirring blades (33) of each group are arranged at intervals along the vertical direction.

5. The defoaming tank for the natural gas foam drainage gas production system according to claim 1, 2 or 3, wherein a feed port (23) is formed in one radial side of the tank body (22), a fiber bundle (41) corresponding to the feed port (23) is arranged on a rotating shaft (32) of one stirrer (31), and the fiber bundles (41) are circumferentially distributed along the rotating shaft (32) and used for dispersing foam during rotation; the fiber bundle (41) has one end connected to the rotary shaft (32) and the other end suspended in the radial direction of the rotary shaft (32), or the fiber bundle (41) is made of a flexible material, has one end connected to the rotary shaft (32), and has the other end drooping when the rotary shaft (32) is stationary and stretched by centrifugal force when the rotary shaft (32) rotates.

6. The defoaming tank for a natural gas foam drainage gas production system according to claim 5, wherein a fiber connecting seat (42) is provided on the rotating shaft (32), and an end of the fiber bundle (41) is fixed on the fiber connecting seat (42).

7. The defoaming module for the natural gas foam drainage gas production system comprises a defoaming tank (21) connected with an output pipeline (11) of a Christmas tree, and is characterized in that the defoaming tank (21) is the defoaming tank for the natural gas foam drainage gas production system in any one of claims 1 to 6, a defoaming agent filling port (25) at the top of the defoaming tank (21) is connected with a defoaming agent storage tank (51), and a control valve (52) for controlling the filling speed of the defoaming agent is arranged on a connecting pipeline between the defoaming agent storage tank (51) and the defoaming agent filling port (25).

Images