CN211650825U - Guiding device and flooded evaporator - Google Patents

Abstract

The utility model provides a guiding device and flooded evaporator belongs to natural gas exploitation technical field. The utility model provides a flow guiding device which comprises a flow guiding pipe and a flow guiding cover; the guide pipe is used for being inserted into an inlet of an end enclosure of the flooded evaporator, and the first end of the guide pipe is fixed at the inlet; the air guide sleeve is used for being arranged in the seal head and comprises an elbow, the first end of the elbow is connected with the second end of the flow guide pipe, and the second end of the elbow is opposite to the air inlet of the flooded evaporator circulating tube bundle. The utility model discloses in, through the guiding device who contains the elbow, realized the guide effect to the natural gas that thoughtlessly has atomizing ethylene glycol, under the effect of elbow, ethylene glycol enters into the circulating tube bank along the elbow towards the direction of gas flow together with the natural gas in, has avoided atomizing ethylene glycol to gather into the liquid drop again because of the collision and is detained in the head. The utility model provides a flooded evaporator has reduced the moisture in the natural gas and has condensed into the emergence probability of ice because of the quench after getting into the circulating pipe.

Description

Guiding device and flooded evaporator

Technical Field

The utility model relates to a guiding device and flooded evaporator belongs to natural gas exploitation technical field.

Background

During the production of natural gas, flooded evaporators are used to cool the natural gas. Generally, as shown in fig. 1, a head 300 is disposed at an air inlet of a flooded evaporator, and the head 300 is connected to a natural gas delivery pipeline, so that the natural gas can enter a circulation pipe bundle of the flooded evaporator from the delivery pipeline through a space inside the head 300 to be cooled.

In the prior art, a head 300 for connecting a delivery pipe for natural gas and an air intake of a flooded evaporator comprises: a housing 305 and a partition 303 disposed within the housing 305. An inlet 301 communicated with the conveying pipeline and an outlet 302 perpendicular to the direction of the inlet 301 and communicated with the air inlet of the flooded evaporator are formed in the shell 305; the partition 303 is disposed opposite the inlet 301 formed in the housing 305. When natural gas enters the housing 305 from the inlet 301, it impacts the baffle 303 vertically, changing direction, and flowing toward the outlet 302 of the housing 305 to exit the outlet 302 and enter the flooded evaporator.

Since the natural gas is generally prevented from freezing in the circulating tube bundle of the flooded evaporator by adding the atomized glycol into the natural gas in actual production, the condensation efficiency of the natural gas is affected, however, the inventor finds that when the natural gas mixed with glycol enters the shell 305 from the inlet of the head 300, after the natural gas mixture vertically impacts the partition plate 303 in the head 300, the atomized glycol mixed in the natural gas is gathered into liquid drops again and stays on the partition plate 303, so that the content of the atomized glycol carried by the natural gas is reduced, and the effect of preventing the moisture contained in the natural gas from being condensed into ice in the circulating tube bundle of the flooded evaporator, which is expected by adding the glycol, is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a guiding device and flooded evaporator to solve among the prior art moisture in the natural gas and condense into the technical problem of ice in the circulating tube bundle of flooded evaporator.

A flow directing device, comprising: a flow guide pipe and a flow guide cover;

the guide pipe is used for being inserted into an inlet of an end socket of the flooded evaporator, and the first end of the guide pipe is fixed at the inlet;

the air guide sleeve is arranged in the seal head; the air guide sleeve comprises an elbow, the first end of the elbow is connected with the second end of the flow guide pipe, and the second end of the elbow is opposite to the air inlet of the circulating pipe bundle of the flooded evaporator.

Further, the air guide sleeve further comprises a flaring, the small-diameter end of the flaring is connected with the second end of the elbow, and the large-diameter end of the flaring is over against the air inlet of the circulating tube bundle of the flooded evaporator.

Further, the flaring includes roof and bottom plate, the roof is the arc board, the bottom plate is the flat board.

Furthermore, the lower surface of the bottom plate is provided with an adjusting piece for adjusting the distance between the bottom plate and the partition plate in the seal head.

Furthermore, the first end of the elbow is detachably connected with the second end of the flow guide pipe.

Further, the elbow comprises a right-angle elbow with a smooth transition.

Furthermore, a plurality of supporting edges are formed outwards at the first end of the flow guide pipe, and the supporting edges are used for supporting the opening of the seal head.

Furthermore, an annular supporting edge is formed outwards at the first end of the flow guide pipe and used for supporting the opening of the seal head.

Furthermore, the supporting edge is a connecting flange matched with a flange arranged at the opening of the seal head.

A flooded evaporator, comprising: the guide pipe is inserted into an inlet of an end socket of the flooded evaporator body, and the guide cover is arranged in the end socket.

The utility model provides a guiding device, including honeycomb duct and kuppe, through inserting the honeycomb duct and locate the import department of flooded evaporator head, and the first end of honeycomb duct is fixed in this import department, the kuppe includes the elbow, the first end of elbow is held with the second of honeycomb duct and is connected, the second end of elbow is just to the air inlet of the circulation tube bank of flooded evaporator, the guide effect to the natural gas that thoughtlessly has thoughtlessly congealed ethylene glycol has been realized, when atomizing ethylene glycol gets into guiding device along with the natural gas from the honeycomb duct promptly, under the effect of the elbow in the kuppe, atomizing ethylene glycol can with the natural gas together along the cavity of elbow get into in the circulation tube bank together, the liquefaction of atomizing ethylene glycol has been reduced, the probability that icing phenomenon takes place in the flooded evaporator has been reduced.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a seal head in the prior art;

fig. 2 is a schematic structural view of a flow guiding device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a support edge of the deflector of FIG. 2;

FIG. 4 is a schematic view of a support edge of the deflector of FIG. 2;

fig. 5 is a schematic structural view of a flow guiding device according to a second embodiment of the present invention;

fig. 6 is a schematic structural view of a flare provided in the second embodiment of the present invention;

fig. 7 is a schematic structural view of another flaring provided in the second embodiment of the present invention.

Wherein:

100 honeycomb ducts; 101 a supporting edge; 102 a support edge;

1021 folding lines; 200 of a flow guide cover; 201, bending a pipe;

202 flaring; 2021 a top plate; 2022 a base plate;

203 an adjusting piece; 300, sealing a head; 301 inlet;

302 an outlet; 303 a partition plate; 304 a first flange;

305 housing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Example one

Fig. 2 is a schematic structural view of a flow guiding device according to an embodiment of the present invention, and fig. 3 is a schematic structural view of a supporting edge in the flow guiding device shown in fig. 2; FIG. 4 is a schematic view of a support edge of the deflector of FIG. 2; the following describes the flow guiding device in this embodiment with reference to fig. 2 to 4.

As shown in fig. 2, the deflector includes a draft tube 100 and a deflector cover 200;

the draft tube 100 is used for being inserted into an inlet 301 of a seal head 300 of the flooded evaporator, and a first end of the draft tube 100 is fixed at the inlet 301;

the air guide sleeve 200 is arranged in the end enclosure 300, the air guide sleeve 200 comprises an elbow 201, the first end of the elbow 201 is connected with the second end of the draft tube 100, and the second end of the elbow 201 is opposite to the air inlet of the circulating tube bundle of the flooded evaporator.

Specifically, the draft tube 100 may be cylindrical or may also be circular truncated cone-shaped, and the shape of the draft tube 100 is not specifically limited in this embodiment as long as the draft tube 100 can be inserted into the inlet 301 of the head 300 of the flooded evaporator, that is, the maximum outer diameter of the draft tube 100 is less than or equal to the inner diameter of the inlet 301. Preferably, the draft tube 100 is cylindrical and has an outer diameter equal to the inner diameter of the inlet 301, and when the draft tube 100 is matched to the inlet 301, the draft tube 100 has a larger cross-sectional area so as to increase the flow rate of the gas. In this embodiment, the material of the flow guide tube 100 is not particularly limited, and for example, the flow guide tube 100 may be a glass tube or a metal tube.

The first end of the draft tube 100 is fixed to the inlet 301, for example, by providing a support edge 102 or a support edge 101 at the first end of the draft tube 100, but may be adhered to the first end of the draft tube.

In some embodiments, a plurality of support edges 102 are formed outwardly from the first end of the draft tube 100, as shown in fig. 3, the support edges 102 are configured to be supported at the opening of the vessel 300, and the bottom surface of the support edges 102 is in contact with a support platform or a first flange 304 mounted at the opening of the vessel 300. The support edge 102 and the first end of the draft tube 100 can be fixedly connected, for example, the support edge 102 and the draft tube 100 are manufactured into a fixed structure through an integral molding process; or, the support edge 102 and the draft tube 100 may be connected in a rotating manner, for example, when the draft tube 100 and the support edge 102 are made of a metal material, the support edge 102 and the draft tube 100 are of an integral structure, the contact position of the support edge 102 and the draft tube 100 is a folding line 1021, and the support edge 102 is folded along the folding line 1021, that is, the support edge 102 may be folded along the folding line 1021 from a direction consistent with the wall of the draft tube 100 to a direction parallel to the first flange 304, or may be folded from a direction parallel to the first flange 304 to a direction consistent with the wall of the draft tube 100, so as to enable the draft tube 100 to freely enter and exit from the inlet 301 of.

The shape and structure of the supporting edge 102 are not particularly limited in this embodiment, and may be, for example, square or trapezoid; in this embodiment, the number of the supporting edges 102 may be 3, or may also be 4, or may also be 6; the plurality of support edges 102 may be equally spaced or may be unequally spaced. After the second flange on the natural gas conveying pipeline is connected with the first flange 304 at the opening of the seal head 300, the supporting edge 102 is fixed between the two flanges, the bottom surface of the supporting edge 102 is in contact with the first flange 304 of the seal 300, and the top surface of the supporting edge 102 is in contact with the second flange on the conveying pipeline.

In other embodiments, as shown in FIG. 4, the first end of the draft tube 100 is outwardly formed with an annular support rim 101. The bottom edge of the supporting edge 101 contacts with the supporting platform or the first flange 304 at the opening of the sealing head 300, and the supporting edge 101 is fixedly connected with the flow guide tube 100, for example, the supporting edge 101 and the flow guide tube 100 can be fixedly connected through an integral molding process, or the supporting edge 101 and the flow guide tube can be fixed through adhesion, or the supporting edge and the flow guide tube can be connected together through welding. After the second flange of the natural gas delivery pipe is connected with the first flange 304 at the opening of the seal 300, the supporting edge 101 is fixed between the two flanges, the bottom surface of the supporting edge 101 is in contact with the first flange 304 at the opening of the seal 300, and the top surface of the supporting edge 101 is in contact with the second flange of the delivery pipe. The support rim 101 may be a coupling flange that mates with the first flange 304 or may be a metal annular rim. Preferably, the supporting edge 101 is a connecting flange, which has excellent sealing performance when the first flange 304 at the opening of the seal 300 and the connecting flange are connected with a second flange installed on the conveying pipeline, and on the other hand, the first flange 304 and the second flange directly clamp the connecting flange in the middle, so that the flow guide pipe 100 can be effectively fixed and the flow guide pipe 100 is prevented from shaking in the inlet of the seal.

The pod 200 includes an elbow 201. In general, in order to reduce the impact of the mixed gas on the elbow, the bent portion of the elbow is preferably subjected to a rounding treatment. In this embodiment, the angle of the elbow 201 may be any suitable angle, and this embodiment is not particularly limited thereto, as long as the second end of the elbow 201 is opposite to the air inlet of the circulation tube bundle of the flooded evaporator, for example, the angle of the elbow 201 may be 60 °, or may also be 90 °, and a 90 ° angle is preferred, because the inlet 301 and the outlet 302 of the head 300 are perpendicular to each other, and when the angle of the elbow 201 is 90 °, the area of the second end of the elbow 201 facing the air inlet of the circulation tube bundle of the flooded evaporator is large, so that the intake air amount of the circulation tube bundle can be increased. The material of the guiding cover 200 may be the same as the guiding pipe 100 or different from the guiding pipe 100, for example, the guiding pipe 100 and the guiding cover 200 may be made of glass material at the same time, or the guiding pipe 100 may be a metal pipe and the guiding cover 200 may be a glass cover.

The first end of the elbow 201 and the second end of the draft tube 100 may be fixedly connected or may be detachably connected.

Specifically, in some examples, the first end of the elbow 201 and the second end of the draft tube 100 are fixedly connected, such as by bonding or welding. When the first end of the elbow 201 is fixedly connected with the second end of the flow guide tube 100, the first end of the flow guide tube 100 can be arranged as a foldable support edge 102, so that the flow guide device is installed from the inside of the end enclosure 300, that is, the flow guide tube 100 is installed from inside to outside along the inlet 301 of the end enclosure 300, at this time, the support edge 102 and the wall of the flow guide tube 100 are located on the same plane, and when the flow guide device is adjusted to a proper position, the support edge 102 is folded to be supported at the opening of the end enclosure 300.

In other examples, the first end of the elbow 201 and the second end of the draft tube 100 are detachably connected, and for example, the outer wall of the first end of the elbow 201 is configured as a male thread, and the inner wall of the second end of the draft tube 100 is configured as a female thread, or the outer wall of the second end of the draft tube 100 is configured as a male thread, and the inner wall of the first end of the elbow 201 is configured as a female thread. At this time, when the guiding device is installed in the end enclosure 300, the guiding device may be disassembled into the guiding tube 100 and the guiding cover 200, the guiding tube 100 is inserted and installed from the inlet 301 of the end enclosure 300 from the outside to the inside, the guiding cover 200 enters from the inside of the end enclosure 300, and then the guiding tube 100 and the guiding cover 200 are assembled together to form the guiding device. Certainly, the flow guide tube 100 may also be installed from the inside of the end enclosure 300 along the inlet 301 from the inside to the outside, the first end of the flow guide tube 100 may be provided with a foldable support edge 102, after the flow guide tube 100 is installed in the inlet 301 and adjusted to a proper position, the support edge 102 is folded to be supported at the opening of the end enclosure 300, and then the flow guide cover 200 is assembled with the flow guide tube 100 inside the end enclosure 300 to form the flow guide device.

Optionally, an adjusting member 203 is disposed at the bottom of the elbow 201, a first end of the adjusting member 203 is fixed to the bottom of the elbow 201, for example, by being bonded, or being fixed by being screwed, and a second end of the adjusting member 203 abuts against the partition 303 in the head 300. Specifically, the adjusting member 203 may be a spring, or may also be an adjusting bolt. Specifically, a first end of the adjusting bolt passes through a through hole formed in the bottom of the elbow 201, a second end of the adjusting bolt abuts against the partition plate 303, a nut in the adjusting bolt is located on the outer side of the bottom of the elbow 201, and the distance between the elbow 201 and the partition plate 303 is further adjusted by adjusting the relative position of the nut, so that the flared opening 202 is supported on the nut.

In this embodiment, since the elbow 201 is installed inside the end enclosure 300 after being connected with the flow guide pipe 100, the whole elbow 201 is in a suspended state, when gas with a certain pressure enters the elbow 201 through the flow guide pipe 100, the elbow 201 in the suspended state may shake or vibrate, if the gas is in such a state for a long time, the joint between the elbow 201 and the flow guide pipe 100 may be damaged, so that the adjusting member 203 is disposed at the bottom of the elbow 201, and the distance between the elbow 201 and the partition 303 is adjusted, so that the elbow 201 is supported on the partition 303 in the end enclosure 300, thereby preventing the suspended state of the flow guide cover 200, and prolonging the service life of the flow guide device.

The guiding device that this embodiment provided, including honeycomb duct and kuppe, the kuppe includes the elbow, and the first end and the honeycomb duct of elbow are connected, and the second end is just to the circulating tube bank of flooded evaporator. When gas enters the flooded evaporator from the inlet of the end socket, the gas directly enters the circulating pipe bundle inside the flooded evaporator through the flow guide pipe and the flow guide cover, specifically, mixed gas mixed with atomized glycol enters the elbow from the flow guide pipe, the elbow has a guiding effect on the mixed gas, and particularly has a good guiding effect on the atomized glycol, namely the atomized glycol enters the circulating pipe bundle together with natural gas along the direction of the elbow towards the gas flow. And among the prior art, because the flooded evaporator is a standard industrial device, its head and the pipeline that sets up in advance all through accurate calculation and retest, its capping structure, size can not change at will, otherwise accident takes place easily under the effect of interior pressure, so the utility model provides a guiding device can design and install under the condition of the head of the flooded evaporator of not changing, and is very convenient when in-service use, has improved work efficiency.

Example two

Fig. 5 is a schematic structural diagram of the flow guiding device provided in this embodiment; fig. 6 and 7 are schematic structural views of two flares provided by the present embodiment; the following describes a specific embodiment of the present embodiment with reference to fig. 5 to 7.

As shown in FIG. 5, the flow guide sleeve 200 further includes a flared end 202, a smaller diameter end of the flared end 202 being connected to a second end of the elbow 201, and a larger diameter end of the flared end 202 facing an air inlet of a recirculation tube bundle of a flooded evaporator. The flare may be any suitable shape and configuration of components, for example the flare may be flared, as shown in fig. 7, or may be other irregular shapes. The flared end 202 and the second end of the elbow 201 may be fixedly connected, such as by bonding or welding, or may be integrally formed; of course, the flared end 202 and the second end of the elbow 201 may also be detachably connected, for example, the small diameter end of the flared end 202 is provided with male threads, the inner wall of the second end of the elbow 201 is provided with female threads, and the two are screwed together.

As shown in fig. 6, the flared opening 202 includes a top plate 2021 and a bottom plate 2022, the top plate 2021 is an arc-shaped plate, the bottom plate 2022 is a flat plate, and two adjusting members 203, such as adjusting bolts, may be disposed on the bottom plate 2022 at intervals. The top plate of flaring sets up to the arc through, and the bottom plate sets up to flat board (similar with the toper along the shape after the axial is cut open) for the shape of flaring and the inside shape phase-match of head, consequently be difficult to damage guiding device in the installation, planar bottom plate is favorable to the installation and the regulation of regulating part moreover, and makes the better support flaring of regulating part.

With continued reference to fig. 5, optionally, an adjusting member 203 is disposed on the bottom surface of the flared opening 202 for adjusting the distance between the flared opening 202 and the partition 303 in the sealing head 300 and supporting the flared opening 202, and the number of the adjusting members is not limited in this embodiment, and may be, for example, one or more. Specifically, the adjusting member 203 may be an adjusting bolt, or may also be a spring, or may also be another mechanism for adjusting the height. The specific implementation manner of the adjusting element 203 in this embodiment is the same as that described in the first embodiment, and is not described herein again.

In this embodiment, the diversion cover 200 includes the elbow 201 and the flare 202, the elbow 201 and the flare 202 are connected to each other, because the diversion cover 200 is installed inside the end enclosure 300 after being connected to the diversion pipe 100, the whole diversion cover is in a suspended state, when gas with a certain pressure enters the diversion cover 200 through the diversion pipe 100, the diversion cover 200 in the suspended state may shake or vibrate, if the diversion cover is in such a state for a long time, the connection between the diversion pipe 100 and the elbow 201 and the connection between the elbow 201 and the flare 202 may be damaged, so the adjusting member 203 is disposed on the bottom surface of the flare 202, the distance between the flare 202 and the partition 303 is adjusted, the diversion cover 200 is supported on the partition 303 in the end enclosure 300, the diversion cover 200 is prevented from being in the suspended state, and the service life of the diversion apparatus is prolonged.

The guiding device that this embodiment provided still includes the flaring, and the minor diameter end of flaring is held with the second of elbow and is connected, and the major diameter end of flaring just faces the air inlet of the circulating tube bank of flooded evaporator. The inner diameter of the flaring is changed from small to big along with the moving direction of the air flow, the cross section area of the air flow entering the circulating tube bundle is increased, and the condensing efficiency of the air is improved. Further, the flow guiding device provided by the embodiment further comprises an adjusting piece mounted on the bottom surface of the flaring, and the adjusting piece is used for adjusting the distance between the flaring and the partition plate and supporting the flow guiding device, so that when an air flow with a certain pressure flows through the flow guiding device, the damage of the air flow to the flow guiding device is reduced.

EXAMPLE III

The embodiment provides a flooded evaporator, which comprises a flooded evaporator body and any one of the flow guiding devices, wherein the flow guiding pipe 100 is inserted into an inlet 301 of a seal head 300 of the flooded evaporator body, and the flow guiding cover 200 is arranged in the seal head 300.

Specifically, the body of the flooded evaporator comprises a seal head 300, a partition plate 303 is installed inside the seal head, a flow guide device is located in an upper cavity formed by the partition plate 303 and a shell of the seal head 300 in an enclosing mode, the second end of the flow guide cover 200 is over against an air inlet of a circulating tube bundle in the flooded evaporator and used for guiding air entering the flow guide device into the circulating tube bundle, the circulating tube bundle is composed of a plurality of condensation tubes, and quenching treatment is carried out on the air guided into the condensation tubes. The structure and function of the flow guiding device in this embodiment are the same as those in the above embodiments, and reference may be made to the above embodiments specifically, and details are not described here again.

The flooded evaporator that this embodiment provided, through install above-mentioned guiding device in the head, realized that the mist that will thoughtlessly congeal the ethylene glycol directly leads to the circulating tube bank from guiding device in, thereby avoided the ethylene glycol to condense into the appearance of the phenomenon that the gas that the drop caused carries the ethylene glycol volume reduction because of the collision effectively, can not produce the ice sheet on consequently the mixed gas gets into the pipe wall of condenser pipe behind the condenser pipe, improved the condensation effect to the mist.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A flow directing device, comprising: a flow guide pipe and a flow guide cover;

the guide pipe is used for being inserted into an inlet of an end socket of the flooded evaporator, and the first end of the guide pipe is fixed at the inlet;

the air guide sleeve is used for being arranged in the seal head and comprises an elbow, the first end of the elbow is connected with the second end of the flow guide pipe, and the second end of the elbow is opposite to the air inlet of the circulating pipe bundle of the flooded evaporator.

2. The flow directing device of claim 1, wherein the flow directing cap further comprises a flare, wherein a small diameter end of the flare is coupled to the second end of the elbow, and wherein a large diameter end of the flare is directly opposite an air inlet of a recirculation tube bundle of the flooded evaporator.

3. The deflector of claim 2, wherein the flare comprises a top plate and a bottom plate, the top plate being an arcuate plate and the bottom plate being a flat plate.

4. The flow guiding device as claimed in claim 3, wherein the lower surface of the bottom plate is provided with an adjusting member for adjusting the distance between the bottom plate and the partition plate in the sealing head.

5. The deflector of claim 1, wherein the first end of the elbow is removably coupled to the second end of the draft tube.

6. Deflector device according to any of claims 1 to 5, wherein the bend comprises a right-angled bend with a rounded transition.

7. The flow guiding device as claimed in any one of claims 1 to 5, wherein a plurality of support edges are formed outwards from the first end of the flow guiding pipe, and the plurality of support edges are used for supporting at the opening of the sealing head.

8. The flow guiding device as claimed in any one of claims 1 to 5, wherein the first end of the flow guiding tube is outwardly formed with an annular supporting edge for supporting at the opening of the sealing head.

9. The flow guiding device of claim 8, wherein the supporting edge is a connecting flange that matches a flange installed at the opening of the sealing head.

10. A flooded evaporator, comprising:

a flooded evaporator body;

the deflector of any of claims 1-9, wherein the draft tube is inserted into an inlet of a head of the flooded evaporator body and the deflector is disposed within the head.

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