CN109681396B

CN109681396B - Fluid conveying device and multiphase flow separation device

Info

Publication number: CN109681396B
Application number: CN201811626809.XA
Authority: CN
Inventors: 马盛骏; 马万顺
Original assignee: Xinjiang Goldwind Science and Technology Co Ltd
Current assignee: Jinfeng Technology Co ltd
Priority date: 2016-03-02
Filing date: 2016-03-02
Publication date: 2020-07-28
Anticipated expiration: 2036-03-02
Also published as: CN105736258A; CN109681396A; CN105736258B

Abstract

The invention provides a multiphase flow separation device and a fluid conveying device with the multiphase flow separation device, which are used for separating and forming cleaner and drier gas-phase media for the fluid conveying device. The multi-phase flow separating device comprises a first separator, and an air inlet of the first separator is used for introducing an upstream incoming flow; the first separator comprises an outer cylinder with one closed end and a hollow inner container sleeved in the outer cylinder, and an airflow channel is defined by the inner peripheral wall of the outer cylinder and the outer peripheral wall of the inner container; one end of the airflow channel extends towards the closed end of the outer barrel and is communicated with the air inlet of the inner container, and the other end of the airflow channel forms an air inlet for introducing upstream airflow; and the air outlet of the inner container is used for outputting the gas-phase medium formed after separation. Therefore, the multiphase flow separation device can remove impurities in other phase states to form a cleaner gas phase medium, and can better meet the use requirement of the fluid conveying device.

Description

Fluid conveying device and multiphase flow separation device

The application is a divisional application with the application date of 2016, 03 and 02, the application number of 201610118715.6, and the name of the invention is 'a fluid conveying device and a multiphase flow separation device'.

Technical Field

The invention relates to the technical field of multiphase flow separation, in particular to a fluid conveying device and a multiphase flow separation device.

Background

Wind generators, internal combustion engines in rail vehicles, traction motors, which are operated in natural environments, require cooling, and when cooling is performed with the aid of natural cooling air, there is a multiphase separation of the upwind currents.

Taking a wind driven generator as an example, in the prior art, a permanent magnet synchronous motor is generally adopted for the wind driven generator, and because the wind driven generator is used outdoors, the natural environment is severe, the temperature resistance of a permanent magnet of the generator is not high, and the cooling problem is particularly prominent. In order to cool the generator and save cost, air cooling is generally adopted in the prior art, that is, air in the natural environment is introduced into the air gap between the stator and the rotor of the generator to perform heat exchange, so as to achieve cooling.

However, the air in the natural environment is often mixed with a large amount of impurities such as water vapor and sand dust, and is actually a multiphase flow formed by mixing gas, liquid and solid, for example, the multiphase flow is formed by combining the air with a plurality of substances such as water vapor, rain and snow, salt fog, sand dust and floccule. The multi-phase flow contains water and salt which can damage the magnetic poles of the generator, even cause irreversible demagnetization and demagnetization, and damage the insulation mechanism of the generator; after solid-phase substances such as sand and dust contained in the multiphase flow enter the generator, the generator is abraded, the normal use of the generator is affected, and the service life of the generator is shortened.

In addition, in the industries or fields of spinning, cigarette manufacturing and the like, the technical problem of how to separate multiphase flow also exists.

Therefore, how to design a multiphase flow separation device and a fluid transportation device having the multiphase flow separation device to separate and form a relatively clean and dry gas-phase medium for use by the fluid transportation device becomes a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a multiphase flow separation device and a fluid conveying device with the multiphase flow separation device, so as to separate and form cleaner and dry gas-phase media for the fluid conveying device.

In order to solve the first technical problem, the present invention provides a multiphase flow separation device, which includes a first separator, wherein an air inlet of the first separator is used for introducing an upstream incoming flow; the first separator is used for carrying out multiphase flow separation on upwind directional flow;

the first separator comprises an outer cylinder with one closed end and a hollow inner container sleeved in the outer cylinder, and an airflow channel is defined by the inner peripheral wall of the outer cylinder and the outer peripheral wall of the inner container; one end of the airflow channel extends towards the closed end of the outer barrel and is communicated with the air inlet of the inner container, and the other end of the airflow channel forms an air inlet for introducing upstream airflow; and the air outlet of the inner container is used for outputting the gas-phase medium formed after separation.

The multiphase flow separation device can perform multiphase flow separation on upwind incoming flow step by step, and firstly introduces the upwind incoming flow through the first separator to remove most of moisture and solid impurities in the upwind incoming flow so as to form a relatively dry and clean gas-phase medium which is output through the air outlet of the first separator. Therefore, the multiphase flow separation device can remove impurities in other phase states to form a cleaner gas phase medium, and can better meet the use requirement of the fluid conveying device.

Optionally, the inner wall of the outer cylinder is a concave-convex surface, and a spiral guide vane grid is arranged in the airflow channel.

Optionally, the air outlet of the inner container is connected with a separation section, and the aperture of the separation section decreases progressively in the direction from the air inlet of the inner container to the air outlet of the inner container.

Optionally, an air outlet of the inner container is provided with an expansion section for connecting the separation section, and an expansion cavity for separating the substances is formed at the joint of the expansion section and the separation section.

Optionally, a soot blower for blowing the separator to the expansion cavity is arranged in the upwind direction of the expansion cavity.

Optionally, the separation section is an inward-concave arc-shaped revolution body; and/or the separation section is provided with a heat preservation or heating interlayer.

Optionally, the bottom of the outer cylinder is recessed downwards and is provided with a deposition box body communicated with the airflow channel, and the deposition box body is provided with an anti-icing heating device.

Optionally, a flow guide surface is arranged at the opening end of the outer barrel, the flow guide surface comprises an outer convex cambered surface and an inner concave cambered surface which are connected in the upwind direction, and the upwind incoming flow approximately flows in along the tangential direction of the inner concave cambered surface.

Optionally, still include the second separator, the second separator includes inner tube, outer cone section of thick bamboo and the toper chamber that encloses through both, the air intake in toper chamber with the air outlet intercommunication of first separator, the air outlet in toper chamber with the air intake intercommunication of inner tube, the air outlet of inner tube forms the air outlet of second separator.

Optionally, the second separator further comprises a collection tank in communication with the conical chamber for collecting the separated matter.

Optionally, the collection tank is provided with a discharge opening for the separated material, and the discharge opening is closed off by an airlock.

The invention also provides a fluid conveying device, which comprises power equipment with the overheating cavity and the multi-phase flow separation device, wherein an air outlet of the multi-phase flow separation device is communicated with the overheating cavity.

Because the fluid conveying device is provided with the multi-phase flow separating device, a relatively clean gas-phase medium can be formed for the fluid conveying device, such as air cooling or air jet spinning for spinning and weaving, and the damage to equipment can be reduced.

Drawings

FIG. 1 is a side view of a fluid handling device in accordance with the present invention in embodiment 1;

FIG. 2 is a top view of a fluid handling device according to an embodiment of the present invention in FIG. 1;

FIG. 3 is a plan view of a multi-phase flow separation device of a fluid transport device according to the present invention in embodiment 1;

FIG. 4 is a partial side view of the multi-phase flow separation device of FIG. 3;

FIG. 5 is an axial side view of the first separator of the multiphase flow separation device of FIG. 3 looking upwind;

FIG. 6 is a schematic plan expanded view of the spiral guide vane cascade of the first separator shown in FIG. 5;

FIG. 7 is an isometric view of a second separator in the multiphase flow separation device of FIG. 3;

FIG. 8 is a schematic diagram of the blade of the fluid transportation device provided by the invention for utilizing the residual heat of the cooling medium in embodiment 1;

FIG. 9 is a schematic diagram of waste heat utilization of a slewing bearing of a fluid transport device in embodiment 1;

FIG. 10 is a schematic view showing the structure of a noise absorbing device of a fluid transport device according to the present invention in one arrangement in example 1;

FIG. 11 is a schematic view showing the structure of another arrangement of the noise absorbing device of the fluid transport device according to the present invention in embodiment 1;

FIG. 12 is a schematic isometric view of a fluid handling device according to the present invention in embodiment 2;

fig. 13 is a top view of a fluid transport device provided in accordance with the present invention in example 2.

In FIGS. 1-13:

the wind power generation system comprises a generator 1, blades 2, a multi-phase flow separation device 3, an exhaust fan 4, a heater 5, a separator heating branch 6, a blade heating branch 7, a noise absorption device 8, an exhaust device 9, a cabin 10 and a tower 20;

the motor comprises a motor cavity 11, an inner cavity 111, a middle cavity 112 and an outer cavity 113;

a slewing bearing 21;

the device comprises a first separator 31, an outer barrel 311, an inner container 312, an airflow channel 313, a spiral flow guide cascade 314, a separation section 315, a flared section 316, an expansion cavity 317, a soot blower 318 and a deposition box 319;

the second separator 32, the outer cone 321, the inner cylinder 322, the collection box 323, the air lock 324 and the soot blower 325;

a branch 33;

the flow guide surface 34, the convex cambered surface 341 and the concave cambered surface 342;

a diffuser 41;

expansion joint sound-deadening cavity 81 and resonance sound-deadening cavity 82.

Detailed Description

The core of the embodiment of the invention is to provide a multiphase flow separation device and a fluid transportation device with the multiphase flow separation device, so as to separate and form cleaner and dry gas-phase media for the fluid transportation device.

The fluid transportation device and the multiphase flow separation device of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can accurately understand the technical solution of the present invention.

For convenience of description, the fluid transportation device and the multi-phase flow separation device will be described in detail by taking a wind power generator as an example of the fluid transportation device.

The up and down directions described herein are referred to as wind turbine systems, and generally refer to the extending direction of the tower 20 of the wind turbine system as the up and down direction, the direction pointing to the center of the earth as the down direction, and the direction opposite to the down direction as the up direction; the axial direction as referred to herein refers to the direction of extension of the generator shaft of the generator 1, and the circumferential and radial directions are also defined in terms of the generator shaft of the generator 1.

Unless otherwise specified, the inner and outer regions described herein are defined with reference to the generator shaft, with the direction toward the generator shaft being the inner and the direction away from the generator shaft being the outer; in the axial direction, the direction close to the generator shaft center is inward, and the direction away from the generator shaft center is outward.

The nacelle 10 of the wind turbine system described herein is defined end to end with reference to the wind direction, with the upwind end being the nose and the downwind end being the tail.

As shown in fig. 1 and 2, the present invention provides a wind power generator system including a generator 1 and blades 2 connected to a rotor of the generator 1. In the wind power generator system, the generator 1 is provided with a motor cavity 11, and the motor cavity 11 refers to an internal air gap of the generator 1; the generator 1 can generate a large amount of heat energy in the operation process, and can absorb the heat energy in the natural environment under the condition of high temperature of the external environment, and the heat energy can be diffused into the motor cavity 11; that is to say, along with the operation of the generator 1, a large amount of heat energy can be stored in the motor cavity 11, and it is very important to effectively cool the generator 1 in time to control the temperature rise. The air cooling has many advantages, but the cooling medium in the natural environment is usually not clean enough and is multiphase fluid, which affects the insulation performance of the generator 1 and abrades the generator 1.

In order to solve the technical problems, the wind driven generator system further comprises a multi-phase flow separating device 3, wherein an air inlet of the multi-phase flow separating device 3 is used for introducing upstream incoming flow, the multi-phase flow separating device 3 is used for separating solid particles and/or liquid drops in the upstream incoming flow to form dry clean gas, the multi-phase flow separating device 3 is provided with an air outlet used for leading out the clean gas, and the air outlet is communicated with the motor cavity 11 so as to send the clean gas into the motor cavity 11 as a cooling medium; the cooling medium absorbs heat in the motor cavity 11 to cool the generator 1; the motor cavity 11 is also communicated with an exhaust fan 4, the cooling medium absorbs heat in the motor cavity 11 to form hot air flow with higher temperature, and the exhaust fan 4 communicated with the motor cavity 11 is used for exhausting the hot air flow, so that the cooling medium treated by the multiphase flow separation device 3 continuously enters the motor cavity 11 for heat exchange, and open circulation of the cooling medium is realized. The open type is relative to the closed type, wherein the closed type refers to that the medium is in and out in a reciprocating and circulating mode, and then the open type refers to that the medium is directly discharged after entering and is not recycled.

Therefore, the technical problems of demagnetization, abrasion and the like when the generator 1 is naturally air-cooled are solved through the arrangement of the multi-phase flow separating device 3, and the energy consumption in the cooling process is effectively reduced. More importantly, the motor cavity 11 is communicated with the exhaust fan 4, on one hand, clean gas formed after separation can be effectively introduced into the motor cavity 11, and cooling efficiency is improved; on the other hand, hot air flow can flow out of the motor cavity 11 quickly, heat exchange efficiency is accelerated, and cooling effect on the generator 1 is improved. Particularly, when the generator 1 adopts the outer rotor and the inner armature of the permanent magnetic pole, the magnetic yoke supported by the permanent magnetic pole and the permanent magnetic pole is exposed outside, and when the external environment temperature is too high, the temperature rise is too high, and the demagnetization phenomenon is easy to generate; the invention improves the cooling efficiency, can effectively protect the permanent magnetic pole and the magnetic yoke, prolongs the service life of the generator 1 and improves the use reliability of the generator 1. Moreover, compared with closed circulation, the invention discharges hot air through the exhaust fan 4, the exhaust fan 4 can be an air blower or a draught fan, thus saving the space required for processing and storing the circulating air flow, simplifying the structure of the wind driven generator system and reducing the volume of the auxiliary heat exchange equipment of the body in the wind driven generator system; moreover, compared with closed circulation, the open circulation of the cooling medium can keep the temperature of the cooling medium entering the motor cavity 11 to be lower, thereby being beneficial to improving the heat exchange efficiency and improving the cooling effect.

As shown in fig. 2, the multiphase flow separation device 3 may include a first separator 31 and a second separator 32, both of which have an air outlet for extracting gas formed after separation when the first separator 31 and the second separator 32 are provided. Wherein, the air inlet of the first separator 31 is used for introducing upstream air incoming flow, the air outlet is communicated with the air inlet of the second separator 32, and the air outlet of the second separator 32 is used for outputting gas-phase media formed after separation; when the fluid transportation device is a wind driven generator system, the air outlet of the second separator 32 may be communicated with the motor cavity 11. In other words, the upwind current sequentially passes through the first separator 31 and the second separator 32, and then enters the motor cavity 11 for heat exchange. At this time, the first separator 31 may perform coarse separation, the second separator 32 may perform fine separation, and the first separator 31 may separate less finely than the second separator 32.

It is understood that the number and structure of the separators can be set by those skilled in the art according to the requirement, and the arrangement is not limited to two separators; furthermore, the separators may be connected in series or in parallel. Moreover, the terms first, second, etc. are used only for distinguishing between components having the same or similar structures and do not denote any particular order or importance.

The communicating pipeline between the air outlet of the second separator 32 and the motor cavity 11 may further be provided with a heater 5, so as to heat the moisture-containing gas entering the motor cavity 11, and form a dry cooling medium with a lower relative humidity.

Specifically, the air outlet of the second separator 32 may be provided with at least two branches 33, each branch 33 may be communicated with the motor cavity 11, so as to enter from each direction of the motor cavity 11, and improve the distribution uniformity of the cooling medium formed after separation in the motor cavity 11; wherein at least one branch 33 may be provided with the heater 5 to reduce the relative humidity of the cooling medium entering the machine cavity 11.

In fact, the heater 5 may be disposed on only one of the branches 33, and the airflows of the other branches 33 may directly enter the motor cavity 11, so as to form a relatively dry cooling medium with a relatively low temperature after being converged in the motor cavity 11, thereby avoiding the temperature of the cooling medium being excessively raised due to the heating of the heater 5, and preventing the heater 5 from affecting the cooling effect. Alternatively, one skilled in the art can control the heating temperature of the heater 5 to form a cooling medium with a temperature substantially lower than the temperature in the motor cavity 11, and also to reduce the relative humidity.

In the wind power generator system shown in fig. 2, the generator 1 includes an inner stator support, an inner stator core, a permanent magnetic pole and an outer rotor magnetic yoke, which are sequentially sleeved from inside to outside, wherein slots for winding an inner stator winding are circumferentially distributed at intervals on the inner stator core, air gaps between the permanent magnetic pole and the inner stator core are mutually communicated, and an annular air gap is formed between the permanent magnetic pole and the outer rotor magnetic yoke. At this time, the motor cavity 11 may specifically include an inner cavity 111, a middle cavity 112, and an outer cavity 113 that are sequentially arranged from inside to outside; the inner cavity 111 is formed by the cavity of the inner stator support body, and the inner cavity 111 is axially communicated; an air gap formed by the inner stator core and the permanent magnet pole is used as a middle cavity 112, and an annular air gap between the permanent magnet pole and the outer rotor magnetic yoke is used as an outer cavity 113. Due to the axial through of the inner cavity 111, the fluid will flow to the outer cavity 113 along the radial direction through the shaft end of the generator 11, and then communicate with the outer cavity 113. Then, the cooling medium may enter from the inner cavity 111 or the outer cavity 113, and join at the outer cavity 113, and then be discharged through the middle cavity 112. At this time, each branch 33 may communicate with the inner cavity 111 or the outer cavity 113, and communicate the middle cavity 112 with the exhaust fan 4 to guide the airflow to cool the generator 1.

At least one branch 33 communicated with the inner cavity 111 and at least one branch 33 communicated with the outer cavity 113 can be further arranged, the heater 5 is arranged on the branch 33 communicated with the inner cavity 111 or the outer cavity 113, and only the gas entering the inner cavity 111 or the outer cavity 113 is heated and dried. Because the branches 33 communicated with the inner cavity 111 and the outer cavity 113 exist at the same time, and the airflow flowing in from the inner cavity 111 also flows through the outer cavity 113 to enter the middle cavity 112, then the airflows conveyed by the branches 33 converge at the outer cavity 113 to form a relatively dry cooling medium with a relatively low temperature, and the relatively dry cooling medium enters and is conveyed to the middle cavity 112, so that the quality of the cooling medium entering the middle cavity 112 is improved, and the generator 1 is better cooled.

In detail, three branches 33 may be provided, wherein two branches 33 are respectively communicated with two radial sides of the outer cavity 113, and the heater 5 is provided on the other branch 33 and communicates the other branch 33 with the inner cavity 111. At this time, the cold gas of two branches 33 is directly conveyed to the outer cavity 113 from two radial sides, and the gas of the other branch 33 flows into the inner cavity 111 after being dried by the heater 5, and then flows into two sides of the outer cavity 113 after being diffused outward from the end of the inner cavity 111 in the radial direction; the gases in the three branches 33 converge in the outer cavity 113 to form a high-quality cooling medium (i.e., relatively dry and low-temperature) which is then delivered to the middle cavity 112 to sufficiently cool the armature.

On the basis of the above, the present invention may further include a separator heating branch 6, where the separator heating branch 6 is used to convey the hot air flow led out from the motor cavity 11 to the second separator 32, so as to heat the gas to be separated of the second separator 32. Due to the influence of the external environment, the upstream air may contain impurities and high relative humidity, and even though the primary separation is performed by the first separator 31, the air flow conveyed to the second separator 32 may contain a large amount of solid particles, liquid drops and the like; in order to avoid the second separator 32 from blocking and freezing, the cooled hot air flow can be introduced to the second separator 32, so that the second separator 32 maintains a certain temperature, the gas to be separated sent into the second separator 32 is prevented from freezing or condensing due to too low temperature, and the separation reliability of the second separator 32 is ensured. Moreover, the hot air flow led out from the motor cavity 11 is conveyed to the second separator 32, so that the heat energy can be recycled, and the energy can be saved.

As shown in fig. 2, the hot air flow may be specifically led out from the middle cavity 112, and both sides of the middle cavity 112 may be communicated with the exhaust fan 4 through output pipelines, or alternatively, one output pipeline may be led out from each of both sides of the middle cavity 112, and then the exhaust fan 4 is connected to the tail end of each output pipeline; in this case, the separator heating branch 6 may be communicated with one of the output pipes, or may be communicated with both of the output pipes.

The invention can also comprise a blade heating branch 7, wherein the blade heating branch 7 is used for conveying hot air flow led out from the motor cavity 11 to the inner cavity of the blade 2 so as to heat the blade 2 and prevent the front edge of the blade 2 from icing. Similarly, the hot air flow may be specifically led out from the middle cavity 112, and at this time, the hot air flow may be led out to the inner cavity of the blade 2 by the output pipeline on one side, or the hot air flow may be led out to the inner cavity of the blade 2 on the side corresponding to each output pipeline by the output pipelines on both sides.

Meanwhile, the connecting part of the output pipeline and the blade heating branch 7 can be provided with structures such as an air door and a fan, so that the hot air flow is accelerated while the connection is realized. When being equipped with blade heating branch 7, can effectively utilize the hot gas flow after the heat transfer to heat blade 2, prevent that blade 2 from freezing, need not to set up structures such as heating plate alone for blade 2, can simplify blade 2 structure, reduce cost. Because the generator 1 does not generate heat before the generator starts to operate, at this time, the generator 1 does not need to be cooled, or the requirement for heating the blade 2 cannot be met when the temperature of the air flow after heat exchange led out from the motor cavity 11 is low and does not meet the requirement, therefore, a heating device can be arranged on the blade heating branch 7 so as to heat the air flow sent into the inner cavity of the blade 2 through the blade heating branch 7 at the initial operating stage of the generator 1 and realize reliable heating of the blade 2; after the generator 1 has been in operation for a certain period of time, the heating means of the blade heating branch 7 can be switched off and can be switched on as required.

Hereinafter, other parts of the wind turbine system according to the present invention will be described in detail by taking embodiment 1 as an example, with reference to the drawings.

The first separator 31 has various structural forms, and may be specifically a cyclone separator. As shown in fig. 3 and 4, the first separator 31 may include an outer cylinder 311 with one closed end, an inner container 312 may be sleeved in the outer cylinder 311, the inner container 312 is a hollow structure and has a hollow cavity, the inner container 312 may be a hollow cylinder with two open ends, and an air inlet and an air outlet are respectively formed at two ends of the inner container 312; an air flow channel 313 can be defined by the inner peripheral wall of the outer cylinder 311 and the outer peripheral wall of the inner container 312, the air flow channel 313 extends approximately in the axial direction of the outer cylinder 311 and the inner container 312, an air inlet of the inner container 312 faces the closed end of the outer cylinder 311, one end of the air flow channel 313 extends towards the closed end of the outer cylinder 311 and can be communicated with the air inlet of the inner container 312 to realize communication with a hollow cavity of the inner container 312, and an air inlet for introducing upstream incoming airflow is formed at the other end of the air flow channel 313; the air outlet of the inner container 312 is communicated with the air inlet of the second separator 32. At this time, the upward wind flows through the airflow channel 313 between the outer tube 311 and the inner container 312, enters the inner container 312, and is then transported to the second separator 32 through the inner container 312. The upwind current collides with the peripheral wall of the outer cylinder 311 and the inner container 312 to perform pre-separation in the process of flowing through the airflow channel 313; because the air inlet of the inner container 312 is opposite to the air inlet of the upstream incoming air, the airflow in the airflow channel 313 needs to rotate in the 180-degree flow direction when entering the inner container 312, a large amount of impact can be generated in the rotation process, and the separation is further completed; in the process that the airflow flows along the hollow cavity of the inner container 312 toward the air outlet of the inner container 312, the airflow collides with the inner peripheral wall of the inner container 312, so as to realize separation.

In the present specification, the inside and outside are referred to the central axis of each separator, and the direction close to the central axis is the inside and the direction far from the central axis is the outside.

The outer cylinder 311 and the inner container 312 can be coaxially arranged in parallel to the upward wind direction, an air inlet and an air outlet can be respectively formed at two axial ports of the inner container 312, the air inlet of the inner container 312 faces the closed end of the outer cylinder 311, and the open end of the outer cylinder 311 and the air outlet of the inner container 312 are positioned at the same end; at this time, the upwind current may first flow through airflow channel 313 in the upwind direction, undergo a 180 degree turn at the tail of airflow channel 313 and flow along bladder 312 against the upwind direction.

The air outlet of the inner container 312 may be connected to the separating section 315, and the aperture of the separating section 315 is gradually decreased in the direction from the first separator 31 to the second separator 32. In the embodiment shown in fig. 3 and 4, the separating section 315 may be a substantially concave arc-shaped body of revolution, specifically, an arc-shaped body of revolution formed by one concave arc along the central axis of the first separator 31 by 360 degrees is used as the separating section 315. Usually, the pipeline that realizes gas transport is the straight tube, but, in order to realize the separation, inner bag 312 must have sufficient volume, and inner bag 312's air outlet bore is also bigger, can set up the tapered disengagement section 315 of bore at inner bag 312's air outlet this moment to realize being connected of inner bag 312 and conveyer pipe, and then carry the air current to second separator 32 through the conveyer pipe.

Of course, the aperture of the separating section 315 may be tapered in the direction from the first separator 31 to the second separator 32, and the configuration of the arc-shaped rotator is not necessarily adopted. However, when the arc-shaped revolving body is adopted, the inner wall of the arc-shaped revolving body can guide the airflow, and the airflow can flow along the tangential direction of the separation section 315 by setting the radian of the arc-shaped revolving body, so as to smoothly flow out of the inner container 312; compared with the structural form of a hollow triangular pyramid and the like, the structural form of an arc-shaped revolving body adopted by the separation section 315 can reduce the influence of the output airflow on the first separator 31 and assist in improving the separation effect of the first separator 31; the airflow can also rapidly enter the second separator 32 for separation again, and the conveying efficiency of the airflow is improved.

In order to further prevent the air flow from carrying a large amount of low-temperature water vapor, a heat preservation or heating interlayer can be arranged on the separation section 315 to prevent the separation section 315 from freezing, ensure the reliability of the air flow from the first separator 31 to the second separator 32, and reduce the low-temperature water vapor entering the second separator 32.

Meanwhile, a flaring section 316 can be arranged at the air outlet of the inner container 312 and is connected with the separation section 315 through the flaring section 316. The flared section 316 may also extend outwardly in a curved or linear relationship. The bore of the flared section 316 increases in the direction from the first separator 31 to the second separator 32, and the bore of the separation section 315 decreases in the direction from the first separator 31 to the second separator 32, so that the junction of the flared section 316 and the separation section 315 forms a volume of maximum radial dimension that serves as an expansion chamber 317 for receiving the separated material.

By separator is meant material separated from a gas stream by a separator, including but not limited to solid particulates and liquid droplets. The airflow flowing out of the inner container 312 still has a high impurity content, the impurities can flow forward along with the airflow, the caliber of the joint of the flaring section 316 and the separating section 315 is large, the flow rate can be reduced, the impurity carrying capacity is reduced, and the time for separating the impurities from the airflow to deposit is given, so that part of the impurities are retained in the flaring cavity 317 to realize further separation. Impurities are referred to herein as impurities in relation to cooling, and any substance that affects the cooling of the generator 1 or damages the generator 1 is considered an impurity in this application.

And because the airflow in the inner container 312 has high humidity, dust and the like in the separated objects can be agglomerated under the action of moisture, so that the separated objects cannot be normally stored in the expansion cavity 317, and even the normal conveying of the airflow in the inner container 312 can be influenced. In this regard, the present application may also provide a soot blower 318, such as an infrasonic soot blower, upstream of the flash chamber 317 to purge the separated matter. The soot blower 318 is arranged to allow the separator to efficiently enter the expansion chamber 317 on the one hand and to prevent the soot from forming lumps on the other hand, so that the first separator 31 and the second separator 32 continue to operate efficiently.

As shown in fig. 4, in the first separator 31, the inner portion of the outer cylinder 311 may be recessed downward, and a deposition housing 319 is disposed at the recessed portion, and the deposition housing 319 is communicated with the airflow channel 313, so that when the upward wind flows through the airflow channel 313, the separated objects may be collected at the recessed portion of the outer cylinder 311 and enter into the deposition housing 319, so as to ensure that the airflow channel 313 has a sufficient flow area, and prevent the separated objects from being accumulated to block the airflow channel 313.

The deposition chamber 319 may also be provided with a blow-off door that may be automatically opened and closed to allow for the discharge of excess debris from the deposition chamber 319. A waste gate may be provided at the bottom of the deposition chamber 319. A heating pipe may be further provided around the deposition chamber 319, and a hot air flow introduced from the motor chamber 11 is introduced into the heating pipe to heat the deposition chamber 319 by using residual heat, thereby preventing moisture in the separated material from being mixed with ash to be agglomerated.

The open end of the outer cylinder 311 may be further provided with a flow guide surface 34 for guiding the upwind incoming flow so that the upwind incoming flow smoothly enters the airflow passage 313. Specifically, the flow guiding surface 34 may include an outer convex arc surface 341 and an inner concave arc surface 342 sequentially connected in the upwind direction, the center of the outer convex arc surface 341 is located on the inner side of the first separator 31, and the center of the inner concave arc surface 342 is located on the outer side of the first separator 31; by setting the arc of the concave arc 342, the upwind can flow in the tangential direction of the concave arc 342 approximately after passing through the convex arc 341 and retracting inward, as shown in fig. 4. The concave arc surface 342 and the convex arc surface 341 can be smoothly connected, and the concave arc surface 342 and the convex arc surface 341 are connected to form an inverted S-shaped structure in the direction from the first separator 31 to the second separator 32. On one hand, the concave arc 342 can effectively expand the aperture of the opening end of the outer cylinder 311 to accommodate the upstream; however, if the concave arc 342 continues to extend outward, it is possible to form a vertical section perpendicular to the upwind direction flow, so that the end of the concave arc 342 may be connected to the convex arc 341 to converge the opening of the concave arc 342, and the upwind direction flow may be converged to the opening corresponding to the concave arc 342; moreover, by reasonably setting the radian of the concave cambered surface 342, the upwind current gathered by the convex cambered surface 341 can enter the airflow channel 313 along the tangential direction of the concave cambered surface 342, so that the resistance of the upwind current entering the airflow channel 313 is reduced.

As shown in fig. 1, the hot air flow from the motor cavity 11 of the exhaust fan 4 can also be partially delivered to the outer cylinder 311 of the first separator 31, so as to deice the first separator 31 and prevent the outer cylinder 311 and the flow guiding surface 34 connected to the open end of the outer cylinder 311 from freezing.

With further reference to fig. 5 and 6, to improve the separation effect, a spiral guide vane cascade 314 may be disposed in the airflow channel 313 to guide the upwind to spirally flow, so as to realize the separation during the spiral flow. As shown in fig. 5, the circles with crosses represent the upwind directional flow entering the airflow channel 313, and the circles with circles represent the airflow flowing out of the airflow channel 313, and the upwind directional flow can circulate along the spiral flow guiding vane cascade 314 to the airflow channel 313 and smoothly enter the hollow cavity of the inner container 312; in the process, the upwind incoming flow needs to be guided by the spiral guide vane cascade 314, the flow direction needs to be changed in a rotating way, the collision is necessarily caused, the flow speed of the air flow is reduced, and solid particles and liquid drops can be condensed and grown to separate the air flow, and finally the air flow enters the deposition box 319 at the bottom of the outer cylinder 311. As shown in FIG. 6, the pitch of the helical guide vane cascade 314 may be set to match the impurity level of the upwind incoming flow for effective separation.

The inner wall of the outer cylinder 311 may also be provided with a concave-convex surface, such as a corrugated surface, to prevent the upwind incoming flow from directly flowing through the gap between the spiral guide vane cascade 314 and the outer cylinder 311 without entering the spiral guide vane cascade 314. At this time, the arrangement of the inner wall of the outer cylinder 311 and the spiral guide vane cascade 314 makes the upwind current generate violent impact and revolution in the flowing process, that is, the upwind current performs centrifugal motion, which is beneficial to improving the separation effect.

Referring to fig. 7, the second separator 32 may include an inner cylinder 322 and an outer cone 321 which are sleeved inside and outside, an air inlet of the outer cone 321 may be communicated with an air outlet of the first separator 31, so as to introduce the airflow into a conical cavity between the inner cylinder 322 and the outer cone 321, to realize separation in the conical cavity, and the formed clean air enters the inner cylinder 322 and is exhausted through the inner cylinder 322; the bottom of the outer cone 321 may be provided with a collection box 323, and the separated materials may enter the collection box 323.

Taking the inner cylinder 322 and the outer cone 321 as an example of extending up and down, the upper end of the outer cone 321 can be communicated with the air outlet of the first separator 31, so that the airflow spirally moves down along the conical cavity, and spirally rises through the opening at the lower end of the inner cylinder 322 after reaching the bottom. Since the density of impurities such as solid particles and liquid drops is high, when the swirling flow reaches the bottom of the outer cone 321, the impurities fall into the collection box 323 below the outer cone 321, and the clean air flow enters the inner cylinder 322 to rise and continue flowing.

The collection box 323 may also be provided with a conical shape to guide the separated matter to fall along the inner wall of the collection box 323. The bottom of the collection box 323 can also be provided with a discharge opening for the separated material, which can be specifically closed off by a gas lock 324 to improve the gas tightness of the second separator 32. A soot blower 325, such as an infrasonic soot blower, may also be disposed within the collection box 323 to purge the separated matter; the bottom of the collection box 323 may also be funnel shaped to better collect the separated material.

As described above, the second separator 32 of the present invention is communicated with the separator heating branch 6, and specifically, the heating pipe may be surrounded outside the outer cone 321, and then the separator heating branch 6 is communicated with the heating pipe, so as to introduce the hot air flow into the outer cone 321, thereby heating the gas to be separated in the outer cone 321, preventing icing, and also preventing moisture and ash from agglomerating. Similarly, since the separated materials are collected at the bottom of the collecting box 323, a heating pipe may be further disposed at the bottom of the collecting box 323 to introduce a hot gas flow for heating.

The inner cylinder 322, the outer conical cylinder 321, and the collection box 323 may be provided in other forms of a conical cylinder, and are not limited to the above-described conical cylinder structure, such as a straight cylinder; the air flow entering the inner cylinder 322 and the outer cone 321 may be spiral flow to enhance the separation effect, or linear flow, and may be set by those skilled in the art according to the separation requirement.

Referring to fig. 8 and 9, as mentioned above, the blade heating branch 7 may be further provided, specifically, the blade heating branch 7 may be communicated with the hub supported by the root of the blade 2, and the blade heating branch 7 is always in a stationary state and needs to be connected with the rotating blade 2 through a connecting device; the rotary bearing 21 can be provided in such a way that a rotatable connection is produced between the blade heating branch 7 and the blade 2 and the hot gas flow is conveyed into the interior of the blade 2 through the gap of the rotary bearing 21.

More specifically, the end of the blade 2 connected to the hub is taken as the root end, the end of the blade 2 extending outward is taken as the tail end, the rotary bearing 21 is connected to the root end of the blade 2, and the hot air flow introduced by the blade heating branch 7 firstly passes through the rotary bearing 21 and then enters the inner cavity of the blade 2 from the root of the blade 2; the hot air flows along the inner cavity of the blade 2 and is thrown out from the tail end of the blade 2 under the action of centrifugal force.

The present invention may further include a noise absorbing device 8, the noise absorbing device 8 is used for absorbing the noise of the exhaust air from the exhaust fan 4, the noise absorbing device 8 may further be communicated with an exhaust device 9, and the exhaust device 9 guides the exhaust air processed by the noise absorbing device 8 so that the exhaust air is discharged in the substantially upwind direction, thereby avoiding the interference with the upwind direction flow and avoiding the noise caused by the collision with the upwind direction flow.

A diffuser 41 may be disposed at the exhaust outlet of the exhaust fan 4, and connected to the noise absorption device 8 through the diffuser 41, so as to avoid the influence of the excessive pressure of the air flow on noise reduction.

According to the different installation positions of the noise absorption device 8, the invention can also form two embodiments, namely embodiment 1 and embodiment 2; hereinafter, embodiment 1 and embodiment 2 will be described in detail with reference to fig. 10 to fig. 13.

It should be understood that the present invention may be different from embodiment 1 and embodiment 2 only in the installation position of the noise absorbing device 8, and other portions may be arranged as described above.

Example 1

As shown in fig. 1 and 2, in the first embodiment, the exhaust fan 4 and the noise absorption device 8 can be arranged at the tail of the cabin 10 of the wind power generator system, and the multi-phase flow separation device 3 can be arranged at the upper wind direction of the exhaust fan 4 and the exhaust device 9; the exhaust fan 4, the noise absorbing device 8, and the exhaust device 9 may be sequentially communicated in the upwind direction. Meanwhile, the air outlet of the air exhaust device 9 can be flared, so that the air exhaust efficiency is improved, and the air exhaust noise is reduced. The exhaust device 9 can also make the exhaust flow to be discharged from the tail part of the cabin 10 approximately parallel to the upwind direction, and the region of the tail part of the cabin 10 extending for a certain distance along the upwind direction is basically a sound attenuation region, so that when the exhaust device 9 guides the exhaust to be discharged from the tail part along the upwind direction, the noise can be reduced to the maximum extent.

The noise absorbing device 8 may be set by using the principle of an expansion joint, including an expansion joint muffling cavity 81 and a resonance muffling cavity 82 which are sequentially provided. As shown in fig. 10, three stages of expansion joint muffling cavities 81 can be provided, and a resonance muffling cavity 82 is correspondingly provided behind each stage of expansion joint muffling cavity 81, so that exhaust air enters the resonance muffling cavity 82 after being diffused by the expansion joint muffling cavity 81 to perform resonance muffling. Use expansion joint amortization cavity 81 as the example, it diffuses step by step at expansion joint amortization cavity 81 at all levels to air exhaust to make and air exhaust at expansion joint amortization cavity 81 at all levels internal diffusion, the air current after the diffusion can produce the sympathetic response better, thereby effectively fall the noise in sympathetic response amortization cavity 82. In the air exhaust direction, each expansion joint silencing cavity 81 can be gradually expanded, and the volume is increased in a step manner; each resonance muffling cavity 82 is changed according to the corresponding expansion joint muffling cavity 81.

The form of the noise absorbing device 8 is various, and is not limited to the structure shown in fig. 10, but as shown in fig. 11, when the expansion joint silencing chamber 81 is provided in a multi-stage series, it may be screw-connected, that is, the noise absorbing device 8 may be provided in a spiral tubular structure. The noise absorbing means 8 may also be made of sound attenuating material or be provided in other forms of sound attenuating structures.

It will be understood by those skilled in the art that when the noise absorbing device 8 is configured as a spiral tubular structure, resonance and energy consumption will occur during the spiral circulation of the air flow, so as to reduce noise, that is, due to the spiral structure, there is no need to specially configure the resonance silencing chamber 82.

Example 2

Referring to fig. 12 and 13, in a second embodiment, the exhaust fan 4 and the noise absorption device 8 can be arranged at the side of the nacelle 10 of the wind turbine system, and the multiphase flow separation device 3 is located at the downwind direction of the exhaust fan 4 and the exhaust device 9; the side of the nacelle 10 is with respect to upwind, i.e. on the upwind side, or not in the fore-aft direction, in particular perpendicular to the upwind direction. At this time, in order to avoid the interference between the upstream incoming flow and the exhaust of the exhaust device 9, the air inlet of the multiphase flow separation device 3 may be substantially perpendicular to the air outlet of the exhaust device 9, or may form a predetermined angle, and the predetermined angle is usually greater than 80 degrees.

It should be noted that any reference herein to being substantially parallel or substantially perpendicular may be offset from parallel or perpendicular by an angle, preferably not exceeding 10 degrees; however, in special cases, the offset angle can be adjusted as required by those skilled in the art.

In either embodiment 1 or embodiment 2, when the multiphase flow separation device 3 includes the first separator 31 and the second separator 32 or includes more separators, the multiphase flow separation device 3 being in the upwind direction or the downwind direction of the exhaust fan 4 and the exhaust device 9 means that each separator is in the upwind direction or the downwind direction of the exhaust fan 4 and the exhaust device 9; unless the polyphase flow separating device 3 comprises too many separators, the nacelle 10 of the wind turbine system has limited space and cannot be equipped with separators either upwind or downwind, where it should be ensured that the separators used to introduce the upwind incoming flow satisfy the above-mentioned installation relationship.

It is to be noted that, in embodiment 1, since the noise absorbing device 8 and the exhaust fan 4 are disposed at the rear of the nacelle 10, and the exhaust fan 4 is implemented as tail exhaust, the exhaust fan 4 may be disposed at the rear of the nacelle 10 as far as possible, and the separator may be disposed approximately at the middle of the nacelle 10 in the head-to-tail direction, and there may be a certain distance between the exhaust fan 4 and the separator in the head-to-tail direction. In embodiment 2, since the side discharge is performed, the exhaust fan 4 is disposed as close to the head of the nacelle 10 as possible, so as to avoid the influence of the discharge on the upstream air flow.

It should be understood that, influenced by the line of sight, fig. 1 and 12 of the present invention show only the first separator 31, and a schematic view of the connection state of the first separator 31 and the second separator 32 is given only in fig. 2 and 13, but this is not to be construed as a specific limitation to the multiphase flow separation device 3.

In fig. 1-13 herein, all arrows indicate the direction of airflow so that those skilled in the art can clearly understand the direction of airflow and the embodiments of the present invention.

Since the wind turbine system includes many components and the structure of each component is complex, only the portion related to cooling of the generator 1 is described herein, and other portions are not described in detail with reference to the prior art.

The invention also provides a fluid conveying device, which comprises power equipment with a overheating cavity and a multi-phase flow separating device 3 for multi-phase flow separation of upwind incoming flow, wherein an air inlet of the multi-phase flow separating device 3 is used for introducing the upwind incoming flow, and an air outlet is communicated with the overheating cavity; the overheating cavity is also communicated with an exhaust fan 4 for exhausting hot air flow.

It should be noted that, at this time, the overheating cavity is equivalent to the motor cavity 11 in the above, and the power equipment is equivalent to the generator 1 in the fluid transportation device, and those skilled in the art can apply the fluid transportation device to various fields according to actual needs to perform air cooling on the overheating cavity in various fields.

In particular, both the multiphase flow separation device 3 and the exhaust fan 4 can be arranged as referred to above; moreover, the above fluid conveying device may be referred to, and related devices for noise reduction and preheating utilization may be provided, which are not described herein again.

For example, in a railway locomotive, an internal combustion engine and a traction motor both need to be cooled, and when the locomotive is cooled by cooling air in a natural environment, there are also problems of multiphase separation of an upstream airflow, recovery and reuse of a hot airflow, and suppression of noise pollution caused by discharge of the hot airflow. The fluid conveying device for multiphase separation heat exchange and noise reduction of upwind directional flow can also be applied to the field.

In addition, the multi-phase flow separating device 3 for separating multi-phase flow can also be applied to the industries or fields of spinning, spinning and cigarette manufacturing.

The fluid transport device and the multiphase flow separation device provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A multiphase flow separation device comprising a first separator (31), characterized in that an air inlet of the first separator (31) is used for introducing an upwind incoming flow; the first separator (31) is used for multi-phase flow separation of upwind directional flow; the first separator (31) comprises an outer cylinder (311) with one closed end and a hollow inner container (312) sleeved in the outer cylinder (311), and an airflow channel (313) is formed by the inner peripheral wall of the outer cylinder (311) and the outer peripheral wall of the inner container (312); one end of the air flow channel (313) extends towards the closed end of the outer barrel (311) and is communicated with an air inlet of the inner container (312), and the other end of the air flow channel forms an air inlet for introducing upstream air; the air outlet of the inner container (312) is used for outputting the gas-phase medium formed after separation;

the inner wall of the outer barrel (311) is a concave-convex surface, and a spiral flow guide blade grid (314) is arranged in the airflow channel (313);

the air outlet of the inner container (312) is connected with a separating section (315), and the caliber of the separating section (315) decreases progressively from the air inlet of the inner container (312) to the air outlet of the inner container (312).

2. The multiphase flow separation device of claim 1, wherein an air outlet of the inner container (312) is provided with a flared section (316) for connecting the separation section (315), and an expansion cavity (317) for a separated object is formed at the connection part of the flared section (316) and the separation section (315).

3. The multiphase flow separation device of claim 2, wherein a soot blower (318) is arranged upstream of the expansion chamber (317) to blow the separator to the expansion chamber (317).

4. The multiphase flow separation device of claim 1 wherein the separation section (315) is a concave arc-shaped solid of revolution; and/or the separation section (315) is provided with a heat preservation or heating interlayer.

5. The multiphase flow separation device of claim 1, wherein the bottom of the outer cylinder (311) is downwardly concave and is provided with a settling tank (319) communicating with the gas flow channel (313), and the settling tank (319) is provided with a heating device for preventing ice.

6. The multiphase flow separation device of claim 1, wherein the opening end of the outer cylinder (311) is provided with a flow guide surface (34), the flow guide surface (34) comprises an outer cambered surface (341) and an inner cambered surface (342) which are connected along an upwind direction, and the upwind incoming flow generally flows along a tangential direction of the inner cambered surface (342).

7. The multiphase flow separation device of any one of claims 1-6, further comprising a second separator (32), wherein the second separator (32) comprises an inner cylinder (322), an outer cone (321) and a conical cavity enclosed by the inner cylinder and the outer cone, an air inlet of the conical cavity is communicated with an air outlet of the first separator (31), an air outlet of the conical cavity is communicated with an air inlet of the inner cylinder (322), and an air outlet of the inner cylinder (322) forms an air outlet of the second separator (32).

8. The multiphase flow separation device of claim 7 wherein the second separator (32) further comprises a collection tank (323) in communication with the conical chamber for collecting the separated matter.

9. The multiphase flow separation device of claim 8, characterized in that the collection tank (323) is provided with a discharge opening for the separated matter and the discharge opening is closed off by a gas lock (324).

10. A fluid transport device comprising a power plant having a superheat chamber, characterised in that it further comprises a multi-phase flow separation device (3) as claimed in any of claims 1 to 9, the outlet of the multi-phase flow separation device being in communication with the superheat chamber.

11. The fluid transport device according to claim 10, characterized in that the fluid transport device is in particular a wind generator comprising a generator (1), the generator (1) having a motor cavity (11), the motor cavity (11) being the superheating cavity.

12. The fluid transportation device of claim 10, wherein the fluid transportation device is an internal combustion engine or a traction motor of a railroad locomotive, and the air inlet of the multiphase flow separation device is used for introducing natural wind for cooling the internal combustion engine or the traction motor.