CN214091831U - Shale gas multi-pipe cyclone separator - Google Patents

Abstract

The utility model relates to the technical field of oil and gas well mining equipment, in particular to a shale gas multitube cyclone separator which comprises a separator shell, a distribution cavity positioned in the separator shell, and a plurality of cyclones which are uniformly arranged in the distribution cavity and run through the distribution cavity; the cyclone is provided with a cyclone inlet pipeline communicated with the distribution cavity; and a separator inlet communicated with the distribution cavity is arranged on the side surface of the separator shell. The utility model discloses can effectual improvement separation precision.

Description

Shale gas multi-pipe cyclone separator

Technical Field

The utility model relates to an oil gas well mining equipment technical field, in particular to shale gas multitube cyclone.

Background

In shale field gathering and transportation engineering, a gas-liquid separation device is generally adopted to separate liquid or sand grains from natural gas in a well. At present, two types of gravity separators and cyclone separators are generally adopted, but the gravity separator is separated only by gravity settling, has low settling speed and large equipment volume size and is not beneficial to integration and skid-mounting; the shale cyclone separator is special equipment developed aiming at the special working condition of shale gas, although the separation efficiency is high and the effect is good, the single processing capacity of the shale cyclone separator is generally within 3 multiplied by 104Nm3/d, a larger cylinder diameter and a higher height are required along with the increase of the processing capacity, when the size of the equipment is increased to a certain degree, the skid-mounting of the equipment is not facilitated, and meanwhile, when the cylinder diameter is increased, the centrifugal acceleration generated under the same linear speed line is reduced, so that the separation precision is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a shale gas multitube cyclone separator is provided, separation precision can effectual improvement.

The utility model provides a solution that technical problem adopted is:

the shale gas multi-pipe cyclone separator comprises a separator shell, a distribution cavity positioned in the separator shell, and a plurality of cyclones which are uniformly arranged in the distribution cavity and penetrate through the distribution cavity; the cyclone is provided with a cyclone inlet pipeline communicated with the distribution cavity; and a separator inlet communicated with the distribution cavity is arranged on the side surface of the separator shell.

The distribution cavity is positioned in the separator shell, and the fluid can be pre-separated in the distribution cavity before entering the cyclone through the cyclone inlet pipeline, so that large-size liquid particles are settled and gathered at the bottom of the distribution cavity under the action of gravity when entering the distribution cavity; meanwhile, the fluid entering the distribution cavity can effectively buffer and reduce flow fluctuation, so that the flow velocity of the fluid is more stable when the fluid enters the cyclone, the separation efficiency, the separation precision and the working condition fluctuation resistance of the fluid are greatly improved, and the shale gas extraction working condition can be completely adapted.

In some possible embodiments, the distribution chamber comprises an upper fixing plate and a lower fixing plate which are arranged in parallel from top to bottom and are mounted in the separator shell; wherein the upper fixing plate and the separator shell form a gas collecting cavity; the lower fixing plate and the separator shell form a gas collecting cavity.

The gas collecting cavity is mainly used for collecting gas phase separated by cyclone of the cyclone.

The liquid storage cavity is mainly used for collecting fluid separated by the cyclone flow of the cyclone.

In some possible embodiments, in order to effectively reduce the air pressure in the liquid storage cavity at the lower part of the separator shell, the pressure difference between the interior of the cyclone and the liquid storage cavity is increased, and the liquid separation effect of the cyclone is improved; also comprises a downcomer which penetrates through the upper fixing plate and the lower fixing plate.

In some possible embodiments, to effectively direct fluid entering the cyclone housing; the cyclone comprises a cyclone shell which is provided with a cyclone inlet pipeline and penetrates through the lower fixed plate, and a central pipe which is coaxial with the cyclone shell and one end of which extends into the cyclone shell; the other end of the central tube additionally penetrates through the upper fixing plate; in order to ensure that the gas-liquid separation is carried out again after the fluid is subjected to the pre-separation, the gas phase included in the liquid phase is completely separated; the cyclone inlet pipeline takes the circle center of the cyclone shell as the circle center and is arranged along the tangential direction of the cyclone shell.

In some possible embodiments, the cyclone inlet pipes are a plurality of cyclone inlet pipes and are uniformly arranged along the circumferential direction of the cyclone shell, and the plurality of cyclone inlet pipes are on the same plane.

In some possible embodiments, the cyclone further comprises a reflection device disposed at one end of the cyclone housing near the reservoir and communicating with the reservoir.

In some possible embodiments, the reflection device comprises a reflection cap installed in the cyclone housing and provided with a through hole, and a cyclone breaker located between the reflection cap and the cyclone housing.

In some possible embodiments, the reflecting cap comprises a circular arc-shaped top part provided with a through hole, a connecting pipeline connected with one side of the top part close to the liquid storage cavity and the outer side of the connecting pipeline is connected with the rotary breaking device, and a discharge port communicated with one end of the connecting pipeline far away from the top part; the outer side of the arc-shaped top is arranged on one side far away from the liquid storage cavity.

In some possible embodiments, the through hole is arranged at the vertex of the circular arc-shaped top.

In some possible embodiments, a gas outlet communicated with the gas collecting cavity is arranged at the top of the separator shell, a liquid outlet communicated with the liquid storage cavity is arranged at the bottom of the separator shell, and a vortex breaking plate is arranged above the liquid outlet.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model makes the upper fixed plate, the lower fixed plate and the separator shell form a distribution cavity together by installing the cyclone on the upper fixed plate and the lower fixed plate together, so that the fluid can enter the distribution cavity for pre-separation before entering the cyclone chamber through the cyclone inlet pipeline, and the fluid can settle and gather large-size liquid particles at the bottom of the distribution cavity under the action of gravity when entering the distribution cavity; meanwhile, the flow fluctuation can be effectively buffered and reduced when the fluid is distributed in the cavity, a relatively stable flow velocity is provided for rotational flow, the separation efficiency, the separation precision and the working condition fluctuation resistance are greatly improved, and the shale gas separation device can completely adapt to the working condition conditions of shale gas extraction;

the utility model discloses a make a plurality of whirl import pipelines arrange along the even interval of separator casing circumferencial direction, can not only play the effect of distribution flow, and enable fluid ability symmetry, dispersion entering cyclone chamber, make the fluid can form the streamline and the centrifugal strength of more continuous uniform in week.

Compared with the reflecting cap in the prior art, the reflecting cap of the utility model has the advantages that the connecting pipeline arranged in the reflecting cap forms an annular liquid flow channel with the inner wall of the separator shell, which is beneficial to the liquid attached to the inner wall of the separator shell to fall smoothly, and the broken rotary piece is arranged in the annular liquid flow channel, thereby effectively eliminating the stirring influence of the rotational flow on the liquid reservoir shell and solving the defect of stirring and entrainment effect of the liquid particles in the liquid reservoir shell because the reflecting rotational flow runs through the bottom of the separator by the existing conical reflecting cap; meanwhile, the through hole is formed in the center of the top, so that gas entering the liquid storage device shell can effectively form a backflow channel, a relative static space is formed in the liquid storage device shell, and liquid particles can sink.

The utility model has the advantages that the gas collecting cavity is communicated with the liquid storage cavity through the downcomer, so that the air pressure of the liquid storage cavity is effectively reduced, the pressure difference of the liquid storage cavity is increased, and the liquid separation effect of the cyclone is facilitated; meanwhile, the separated gas phase needs to be demisted and dried after entering the gas collecting cavity, and is condensed to form liquid drops to fall on the upper fixing plate, at the moment, the liquid drops falling on the upper fixing plate can fall into the liquid storage cavity through the downcomer, and effusion in the gas collecting cavity is avoided.

Drawings

FIG. 1 is a structural diagram of a shale gas multitube cyclone separator provided by the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a block diagram of the cyclone of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

wherein: 1. a separator inlet; 2. a distribution chamber; 3. a separator housing; 4. a cyclone; 41. a cyclone housing; 42. a cyclone inlet conduit; 43. a swirl chamber; 44. a cyclonic separation chamber; 45. a reflective cap; 46. a screw breaking device; 47. a through hole; 48. a central tube; 5. a liquid storage cavity; 6. a vortex breaking plate; 7. a liquid discharge port; 8. a downcomer; 9. a gas collection cavity; 10. a demister; 11. a gas outlet; 12. an upper fixing plate; 13. and a lower fixing plate.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

Reference herein to "first," "second," and similar words, does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

In the implementation of the present application, "and/or" describes an association relationship of associated objects, which means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone.

In the description of the embodiments of the present application, the meaning of "a number" means one or more than one unless otherwise specified. For example, a plurality of positioning posts refers to one or more positioning posts.

To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. 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 application.

The present invention will be further explained with reference to the drawings and examples.

The utility model is realized by the following technical proposal, as shown in figures 1-4,

the shale gas multi-pipe cyclone separator comprises a separator shell 3, a distribution cavity 2 positioned in the separator shell 3, and a plurality of cyclones 4 which are uniformly arranged in the distribution cavity 2 and penetrate through the distribution cavity 2; the cyclone 4 is provided with a cyclone inlet pipeline 42 communicated with the distribution cavity 2; the side of the separator housing 3 is provided with a separator inlet 1 communicating with the distribution chamber 2.

The distribution cavity 2 is positioned in the separator shell 3, and mainly enables fluid to be pre-separated in the distribution cavity 2 before entering the cyclone 4 through the cyclone inlet pipeline 42, so that large-size liquid particles are settled and gathered at the bottom of the distribution cavity 2 under the action of gravity when the fluid enters the distribution cavity 2; meanwhile, the fluid entering the distribution cavity 2 can effectively buffer and reduce flow fluctuation, so that the flow velocity of the fluid is more stable when the fluid enters the cyclone 4, the separation efficiency, the separation precision and the working condition fluctuation resistance of the fluid are greatly improved, and the shale gas extraction working condition can be completely adapted.

A plurality of cyclone 4 is evenly arranged in the distribution cavity 2, so that gas phase and fluid in the distribution cavity 2 can uniformly enter the cyclone 4 through a cyclone inlet pipeline 42 on the plurality of cyclones 4, the gas phase after cyclone separation through the cyclone 4 can be sent into the upper part of the distribution cavity 2, and the fluid after cyclone separation through the cyclone 4 can be discharged through the cyclone 4 and then enters the liquid storage cavity 5 for centralized collection. The cyclone inlet pipeline 42 mainly enables the pre-separated gas phase and liquid phase to enter the cyclone 4 for cyclone separation again through the cyclone inlet pipeline 42 after the fluid finishes pre-separation in the distribution cavity 2.

In some possible embodiments, the distribution chamber 2 comprises an upper fixed plate 12 and a lower fixed plate 13 arranged in parallel from top to bottom and mounted inside the separator casing 3; wherein the upper fixing plate 12 and the separator housing 3 form a gas collecting chamber 9; the lower fixing plate 13 forms a gas-collecting chamber 9 with the separator housing 3.

The gas collecting cavity 9 is mainly used for collecting gas phase separated by the cyclone 4.

The liquid storage cavity 5 is mainly used for collecting the fluid which is separated by the cyclone 4.

Preferably, the lower end of the cyclone 4 and the lower fixing plate 13 are of an integral structure, the upper end of the cyclone 4 and the upper fixing plate 12 are of an integral structure, and the upper end of the cyclone 4 penetrates through the upper fixing plate 12 to extend upwards, so that the gas phase separated by the cyclone 4 can penetrate through the upper fixing plate 12 and is sent into the gas collecting cavity 9; the lower end of the cyclone 4 penetrates through the lower fixing plate 13 and extends downwards, so that the fluid separated by the cyclone 4 can be sent into the liquid storage cavity 5 for centralized collection.

Preferably, in order to ensure the stability of the upper fixing plate 12 and the lower fixing plate 13, a plurality of supporting columns are further fixedly mounted between the upper fixing plate 12 and the lower fixing plate 13, so that the mounting structure of the upper fixing plate 12 and the lower fixing plate 13 is more stable, and the cyclone 4 is more stable when being mounted in the separator housing 3.

In some possible embodiments, in order to effectively reduce the air pressure in the liquid storage cavity 5 at the lower part of the separator shell 3, the pressure difference between the inside of the cyclone 4 and the liquid storage cavity 5 is increased, and the liquid separation effect of the cyclone 4 is improved; and a downcomer 8 penetrating the upper and lower fixed plates 12 and 13.

Preferably, the shale gas multi-pipe cyclone separator further comprises a downcomer 8 penetrating through an upper fixing plate 12 and a lower fixing plate 13, and the upper end of the downcomer 8 is flush with the upper surface of the upper fixing plate 12, so that a gas collecting cavity 9 is communicated with the liquid storage cavity 5, the air pressure of the liquid storage cavity 5 at the lower part of the shell of the cyclone separator is effectively reduced, the pressure difference between the interior of the cyclone 4 and the liquid storage cavity 5 is increased, and the liquid separation effect of the cyclone 4 is facilitated; meanwhile, because the separated gas phase needs to be demisted and dried after entering the gas collecting cavity 9, the condensed liquid drops can fall on the upper fixing plate 12, at the moment, the liquid drops falling on the upper fixing plate 12 can finally fall into the liquid storage cavity 5 along the downcomer 8, and accumulated liquid in the gas collecting cavity 9 is avoided.

The diameter of the downcomer 8 can be calculated according to the diameter of the actual separator shell 3, and the like, so that the downcomer 8 not only can ensure that the accumulated liquid in the gas collection cavity 9 falls smoothly, but also ensures that the rising speed of the gas in the liquid storage cavity 5 is lower than the liquid particle settling speed of the separation precision, and the rising gas is ensured to have no entrained liquid drops.

In some possible embodiments, to effectively direct fluid entering the cyclone subshell 41; the cyclone 4 comprises a cyclone shell 41 which is provided with a cyclone inlet pipeline 42 and penetrates through the lower fixed plate 13, and a central pipe 48 which is coaxial with the cyclone shell 41 and one end of which extends into the cyclone shell 41; the other end of the central tube 48 additionally penetrates through the upper fixing plate 12; in order to ensure that the gas-liquid separation is carried out again after the fluid is subjected to the pre-separation, the gas phase included in the liquid phase is completely separated; the cyclone inlet pipe 42 is arranged along the tangential direction of the cyclone housing 41 with the center of the cyclone housing 41 as the center of a circle.

The cyclone 4 comprises a cyclone housing 41 fixed on the lower fixing plate 13 and a central tube 48 fixed on the upper fixing plate 12; the cyclone shells 41 and the central tube 48 are coaxially arranged at intervals, the upper ends of the cyclone shells 41 are closed, the lower ends of the central tube 48 penetrate through the tops of the cyclone shells 41 and extend downwards, and a cyclone chamber 43 is formed between the inner walls of the cyclone shells 41 and the outer wall of the central tube 48; the cyclone inlet conduit 42 is in communication with the cyclone chamber 43, and the outlet end of the cyclone inlet conduit 42 is tangential to the inner wall of the cyclone housing 41.

Preferably, the central tube 48 extends into the cyclone housing 41 and forms a cyclone chamber 43 with the inner wall of the cyclone housing 41; the swirl chamber 43 has a circular cross-section with a center concentric with the axis of the center tube 48.

Preferably, a cyclone separating chamber 44 communicated with the cyclone chamber 43 is further arranged in the cyclone sub-housing 41, and the cyclone separating chamber 44 is positioned on one side of the cyclone chamber 43 far away from the air collecting chamber 9, namely below the cyclone chamber 43.

Preferably, the cyclone inlet conduit 42 is a narrow, flat bore, which as described herein may be a through bore having a rectangular cross-section. By the arrangement, the fluid is closer to the inner wall of the cyclone shell 41 when passing through the cyclone inlet pipeline 42, so that the centrifugal settling distance of the fluid is shortened at the beginning when the fluid enters the cyclone chamber 43, and the separation efficiency can be greatly improved; secondly, the height of the cyclone inlet pipe 42 is utilized to divide the fluid into gas phase and liquid phase at the beginning of entering the cyclone chamber 43, and the fluid enters the cyclone chamber 43, namely, the upper part of the cyclone inlet pipe 42 is gas phase, and the lower part of the cyclone inlet pipe 42 is liquid phase.

Preferably, the linear velocity of the gas medium is 15 m/s-25 m/s, the rotational flow separation linear velocity of the liquid medium cannot be too high, the higher the velocity is, the more serious the disturbance is, the separation efficiency can be reduced therewith, the linear velocity of the liquid medium is 3 m/s-7 m/s, when the liquid phase and the gas phase fluid in the same orifice are under the same pressure difference, the liquid phase flow velocity is far lower than the gas phase flow velocity due to the density difference, and the calculation and analysis are carried out according to the exploitation working condition of the shale, the liquid phase flow velocity is about one fifth of the gas phase flow velocity, if the gas phase velocity is designed to be 15 m/s-25 m/s, the liquid phase flow velocity is just within the range of 3 m/s-7 m/s, according to the fluid simulation analysis, the utility model can completely meet the requirements, not only eliminate the stirring and disturbance in the rotational flow process, and the entrainment is reduced, and the separation efficiency is improved.

Preferably, the cyclone housing 41 and the lower fixing plate 13 are in an integral structure, the central tube 48 and the upper fixing plate 12 are in an integral structure, and the upper end of the central tube 48 extends upwards through the upper fixing plate 12; the cyclone housing 41 is cylindrical, and the cyclone chamber 43 is positioned at the upper part of the cyclone housing 41; the upper end of the swirl chamber 43 is closed, and the swirl chamber 43 is mainly used for realizing gas-liquid separation of the entering fluid through swirl. The central tube 48 is of a penetrating structure, the length of the central tube 48 in the cyclone chamber 43 is consistent with the height of the cyclone chamber 43, and the lower end of the central tube 48 is suspended; through the installation of the central tube 48, the cyclone chamber 43 is annular, so that when fluid enters the cyclone chamber 43 through the cyclone inlet pipeline 42, the cyclone chamber 43 can guide the fluid, the cyclone effect of the fluid in the cyclone chamber 43 is better, and the separation effect of the fluid is better; meanwhile, as the gas phase separated by the cyclone flow moves upwards, the central tube 48 separates the fluid cyclone area from the area through which the gas phase passes, so that the separated gas phase moves upwards through the inside of the central tube 48, the separated gas phase can be effectively prevented from being mixed with the fluid again, and the cyclone separation effect is higher.

The central axis of the cyclone inlet pipe 42 is a straight line, and the outlet end of the cyclone inlet pipe 42 is tangent to the inner wall of the cyclone housing 41, so that when fluid enters the cyclone chamber 43 through the cyclone inlet pipe 42, the fluid spirally moves downwards along the inner wall of the cyclone housing 41, the fluid is subjected to gas-liquid separation again after pre-separation is completed, and gas phase included in the liquid phase is completely separated.

In some possible embodiments, the cyclone inlet pipes 42 are multiple and uniformly arranged along the circumferential direction of the cyclone housing 41, and the cyclone inlet pipes 42 are on the same plane.

Every the son inlet pipe 42 of whirl on the son casing 41 is a plurality of, and a plurality of son inlet pipe 42 of whirl are along the even interval arrangement of the circumferencial direction of the son casing 41 of whirl, make the even son inlet pipe 42 of passing through a plurality of whirlpools that the fluid in the 2 internal chambeies of distribution can follow whirl son casing 41 all around get into the swirl chamber 43, can not only play the effect of distribution flow, and enable the fluid energy symmetry, the dispersion gets into swirl chamber 43, make the fluid can form the streamline and the centrifugal strength of more continuous symmetry in circumference.

Preferably, as shown in fig. 4, there are three cyclone inlets 42, and the cyclone inlets are uniformly arranged along the circumferential direction of the cyclone housing 41 and are on the same plane.

In some possible embodiments, the cyclone 4 further comprises a reflection device disposed at one end of the cyclone housing 41 near the reservoir 5 and communicated with the reservoir 5.

In some possible embodiments, the reflection means comprises a reflection cap 45 mounted inside the cyclone sub-housing 41 and provided with a through hole 47, a despin 46 located between the reflection cap 45 and the cyclone sub-housing 41.

Preferably, the through hole 47 communicates with the cyclonic separating chamber 44;

in some possible embodiments, the reflection cap 45 includes a circular arc-shaped top portion provided with a through hole 47, a connecting pipe connected with one side of the top portion close to the liquid storage cavity 5 and connected with the rotary breaker 46 at the outer side, and a discharge port communicated with one end of the connecting pipe far from the top portion; the outer side of the arc-shaped top is arranged on one side far away from the liquid storage cavity 5.

When the fluid is subjected to cyclone separation, the remaining liquid phase is discharged from the lower end of the cyclone housing 41 by its own weight; the cyclone separation chamber 44 mainly makes the fluid entering the cyclone chamber 43 enter the cyclone separation chamber 44 through cyclone, the fluid is fully separated in the cyclone separation chamber 44, the separated liquid phase falls down through self-weight, and the separated gas phase moves upwards and continues to move upwards through the central pipe 48; because the separated gas phase in the cyclone separation chamber 44 can continue to move downwards under the action of inertia, when the gas phase which continues to move downwards approaches the reflecting cap 45, the gas phase which moves downwards can be subjected to an upward reaction force, the moving direction of the gas phase is changed, the gas phase with the changed moving direction can form internal rotation and rise, the gas which moves downwards moves upwards after reversing, and the gas phase which moves downwards and the separated liquid phase are prevented from being mixed again.

In some possible embodiments, the through hole 47 is arranged at the vertex of the circular arc-shaped top.

Preferably, the axis of the through hole 47 is arranged coaxially with the axis of the center tube 48.

The connecting pipe is cylindrical, the top of the reflecting cap 45 is arc-shaped, and the center of the top of the reflecting cap 45 is provided with a through hole 47. The top of the reflecting cap 45, the middle of the reflecting cap 45 and the lower part of the reflecting cap 45 are of an integral structure, the top of the reflecting cap 45 is of a spherical surface shape, when separated liquid phase falls on the top of the reflecting cap 45, the liquid phase can continuously fall down along the surface of the top of the reflecting cap 45 through self-weight energy, and the liquid phase falling from the top of the reflecting cap 45 can be attached to the inner wall of the cyclone shell 41 and smoothly falls (particularly, shale gas contains a large amount of sand grains, and the contracted bottom is not beneficial to the falling of the sand grains); meanwhile, because the top of the reflecting cap 45 is arc-shaped, and the through hole 47 is positioned at the center of the top of the reflecting cap 45, the through hole 47 is positioned at the highest point of the top of the reflecting cap 45, so that the gas phase entering the liquid storage cavity 5 can effectively form a backflow channel, and a relatively static space is formed in the liquid storage cavity 5, which is beneficial to the sinking of liquid particles.

Still be equipped with broken revolver 46 between reflection cap 45 middle part and the sub-casing 41 inner wall of whirl, make the gaseous phase of cyclone separation when continuing downstream through inertia, broken revolver 46 can be to the whirl inertia elimination of gaseous phase, prevents that the gaseous phase from stirring the liquid in the liquid storage chamber 5 when entering into liquid storage chamber 5 inside, has solved current toper reflection cap 45 and has run through in the separator bottom and stir the drawback of smuggleing entrainment effect to the liquid particle of liquid storage chamber 5 because of the reflection whirl.

The upper end of reflection cap 45 lower part and the son's of whirl 41 lower extreme are on the coplanar, make the liquid phase of separating and remaining gaseous phase eliminate the back through broken revolver 46 to the whirl inertia, the liquid phase of separating and remaining gaseous phase can be cushioned through reflection cap 45 lower part, the potential energy that not only makes the liquid phase of separating produce when dropping is littleer, and make remaining gaseous phase lower speed when entering into stock solution chamber 5, thereby avoid entering into gaseous phase and the liquid phase in the stock solution chamber 5 and cause the disturbance to original liquid phase in the stock solution chamber 5, make the gaseous phase that enters into in the stock solution chamber 5 can pass through the through-hole 47 upward movement on reflection cap 45 tops, make the separation effect improve greatly.

The diameter of the lower end of the lower part of the reflection cap 45 is larger than the diameter of the opening of the cyclone shell 41, so that the liquid phase and the gas phase discharged from the lower end of the cyclone shell 41 can be completely buffered, and the anti-disturbance effect is better.

In some possible embodiments, the top of the separator housing 3 is provided with a gas outlet 11 communicated with the gas collecting cavity 9, the bottom of the separator housing 3 is provided with a liquid outlet 7 communicated with the liquid storage cavity 5, and the vortex breaking plate 6 is arranged above the liquid outlet 7.

The lower part of the separator shell 3 is also provided with a liquid storage cavity 5, the separator shell 3 is provided with a liquid outlet 7, and an inlet end of the liquid outlet 7 is fixedly provided with a vortex breaking plate 6; stock solution chamber 5 is used for making the liquid phase of separation department to store, and the liquid phase of storing finally discharges through leakage fluid dram 7, because the liquid phase is at the discharge process, the liquid phase in the stock solution chamber 5 can produce the vortex, through the broken vortex board 6 of entrance point installation at leakage fluid dram 7, prevent effectively that the liquid phase in the stock solution chamber 5 from producing the vortex when discharging, avoid the liquid phase in the stock solution chamber 5 to take place the disturbance, conveniently enter into the gaseous phase in the stock solution chamber 5 and can pass through the through-hole 47 upward movement on the reflection cap 45 tops, make the separation effect improve greatly.

The upper part of the separator shell 3 is also provided with an air collecting cavity 9, a demister 10 is arranged in the air collecting cavity 9, and the top of the separator shell 3 is also provided with an air outlet 11; the gas converging cavity 9 mainly gathers the gas phase separated by the cyclone, and because part of water mist still exists in the separated gas phase, the water mist can move upwards along with the separated gas phase, when the gas phase and the water mist enter the gas converging cavity 9, the density of the gas phase and the water mist can be increased, the water mist can be condensed to form water drops, the condensed water drops fall downwards through self weight, and the gas phase can continue to move upwards, so that preliminary demisting is realized; demister 10 is wire mesh demister 10, and mainly used will mix and further separate at the water smoke of gaseous phase, makes gaseous phase and water smoke when passing through demister 10, and water smoke then condenses on demister 10 and forms the water droplet, and the gaseous phase then sees through demister 10 and continues upwards moving, makes finally through 11 combustion gas facies drier of gas outlet.

When fluid needs to be separated, fluid in a well is firstly sent into the distribution cavity 2 through the inlet 1 of the separator, the fluid is buffered in the distribution cavity 2, the fluid is pre-separated while being buffered, a pre-separated gas phase enters each cyclone chamber 43 from the upper part of the cyclone inlet pipeline 42 on each cyclone 4, a pre-separated liquid phase enters each cyclone chamber 43 from the lower part of the cyclone inlet pipeline 42 on each cyclone 4, a gas phase and a liquid phase entering each cyclone chamber 43 move downwards along the inner wall of the cyclone shell 41 in a high-speed spiral mode under the action of centrifugal force, and in the moving process, the gas phase and the liquid phase form an obvious interface and disperse liquid particles in the gas phase are continuously settled in the liquid phase on the inner wall of the cyclone shell 41.

When the liquid phase continues to swirl to the cyclone separation chamber 44, under the action of centrifugal force, liquid particles in the gas phase continue to settle towards the inner wall of the cyclone shell 41, while the gas phase gradually diffuses towards the center of the cyclone shell 41, part of the gas phase moving to the lower end of the cyclone shell 41 due to inertia is reflected by the reflection cap 45 to rise in an internal rotation manner and rises into the central tube 48 along with the separated gas phase, while the gas phase close to the inner wall of the cyclone shell 41 passes through the cyclone breaker 46 with the liquid phase, the gas phase directly enters the liquid storage cavity 5 through the buffer at the lower part of the reflection cap 45, and the liquid phase is buffered by the lower part of the reflection cap 45 and falls into the liquid storage cavity 5 along with the collection at the lower part of the reflection cap 45; the gas phase entering the liquid storage cavity 5 rises into the cyclone separation chamber 44 through the through hole 47 according to the pressure difference, forms internal cyclone ascending gas flow together with the gas phase reflected by the reflecting cap 45, enters the gas collecting cavity 9 through the central tube 48, is filtered by the demister 10, and finally enters a subsequent pipeline system through a gas phase outlet.

The droplets formed after demisting of the demister 10 fall by gravity onto the upper fixed plate 12, and the droplets falling onto the upper fixed plate 12 finally fall into the liquid storage chamber 5 through the downcomer 8.

The utility model provides a shale gas multitube hydrocyclone separator compares with prior art's hydrocyclone separation technique, more can be applicable to shale gas production and use, can replace the defeated hydrocyclone separation and the gravity separator who adopts of shale gas collection comprehensively simultaneously, and separation efficiency, separation precision will be superior to with the existing separator equipment of using of operating mode, have solved current shale gas hydrocyclone separator separation precision and the miniaturized sled dress of equipment problem under large-traffic.

The foregoing detailed description of the embodiments of the present application has been presented, and specific examples have been applied in the present application to explain the principles and implementations of the present application, and the above description of the embodiments is only used to help understand the method and the core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. Shale gas multitube cyclone separator which characterized in that: the cyclone separator comprises a separator shell, a distribution cavity positioned in the separator shell, and a plurality of cyclones which are uniformly arranged in the distribution cavity and penetrate through the distribution cavity; the cyclone is provided with a cyclone inlet pipeline communicated with the distribution cavity; and a separator inlet communicated with the distribution cavity is arranged on the side surface of the separator shell.

2. The shale gas multitubular cyclone separator of claim 1, wherein: the distribution cavity comprises an upper fixing plate and a lower fixing plate which are arranged in parallel from top to bottom and are arranged in the separator shell; wherein the upper fixing plate and the separator shell form a gas collecting cavity; the lower fixing plate and the separator shell form a liquid storage cavity.

3. The shale gas multitubular cyclone separator of claim 2, wherein: also comprises a downcomer which penetrates through the upper fixing plate and the lower fixing plate.

4. The shale gas multitubular cyclone separator of claim 2, wherein: the cyclone comprises a cyclone shell which is provided with a cyclone inlet pipeline and penetrates through the lower fixed plate, and a central pipe which is coaxial with the cyclone shell and one end of which extends into the cyclone shell; the other end of the central tube additionally penetrates through the upper fixing plate; the cyclone inlet pipeline takes the circle center of the cyclone shell as the circle center and is arranged along the tangential direction of the cyclone shell.

5. The shale gas multitubular cyclone separator of claim 4, wherein: the cyclone inlet pipelines are multiple and evenly arranged along the circumferential direction of the cyclone shell, and the cyclone inlet pipelines are multiple and arranged on the same plane.

6. The shale gas multitubular cyclone separator of claim 4, wherein: the cyclone also comprises a reflecting device which is arranged at one end of the cyclone shell close to the liquid storage cavity and is communicated with the liquid storage cavity.

7. The shale gas multitubular cyclone separator of claim 6, wherein: the reflection device comprises a reflection cap which is arranged in the cyclone shell and is provided with a through hole, and a cyclone breaking device which is positioned between the reflection cap and the cyclone shell.

8. The shale gas multitubular cyclone separator of claim 7, wherein: the reflection cap comprises an arc-shaped top part provided with a through hole, a connecting pipeline which is connected with one side of the top part close to the liquid storage cavity and the outer side of which is connected with the broken cyclone device, and a discharge port which is communicated with one end of the connecting pipeline far away from the top part; the outer side of the arc-shaped top is arranged on one side far away from the liquid storage cavity.

9. The shale gas multitubular cyclone separator of claim 8, wherein: the through hole is arranged at the top point of the arc-shaped top.

10. A shale gas multitubular cyclone separator according to any one of claims 2 to 9, wherein: the top of the separator shell is provided with a gas outlet communicated with the gas collecting cavity, the bottom of the separator shell is provided with a liquid outlet communicated with the liquid storage cavity, and a vortex breaking plate is arranged above the liquid outlet.

Images