CN213515173U - Heat exchanger with built-in gas-liquid separation mechanism - Google Patents

Abstract

The utility model discloses an it has gas-liquid separation mechanism's heat exchanger to embed, include: the heat exchanger comprises a hollow shell, a first tube plate, a central cylinder and a heat exchange tube, wherein the two ends of the central cylinder are communicated; the first tube plate is connected with the inner side wall of the shell so that the shell is divided into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the condensate outlet, and the second inner cavity is communicated with the steam inlet; one end of the central cylinder is fixed on the first tube plate and penetrates through the first tube plate, the other end of the central cylinder extends towards the second inner cavity, one end of the second inner cavity, which is far away from the first inner cavity, penetrates through the side wall of the shell, and a turbolator is arranged on the inner side wall of the central cylinder; the heat exchange tube is spirally wound on the central tube, one end of the heat exchange tube penetrates through the first tube plate, and the other end of the heat exchange tube is communicated with a steam source through the steam inlet. The scheme can discharge the non-condensable gas in the steam on the tube side under the condition of reducing the condensate carrying-over as much as possible.

Description

Heat exchanger with built-in gas-liquid separation mechanism

Technical Field

The utility model relates to a heat exchanger technical field, specific is a built-in heat exchanger that has gas-liquid separation mechanism.

Background

The spiral winding tube type heat exchanger is mainly structurally characterized in that a heat exchange tube bundle is spirally wound on a central cylinder, and the spiral winding tube type heat exchanger has the advantages of compact structure, large heat exchange area, low heat transfer temperature difference, free expansion of the tube bundle and the like, and is very suitable for being applied to the fields of low-temperature heat exchange, photo-thermal power stations and the like.

In some applications, the heat exchange system is damaged when the accumulation of non-condensable gases is high due to the non-condensable gases in the steam on the tube side (i.e., in the tube bundle). Therefore, it is a technical problem for those skilled in the art to discharge the noncondensable gas in the tube side steam while minimizing the carry-over of the condensate.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides a built-in heat exchanger that has gas-liquid separation mechanism, it is used for solving above-mentioned problem.

The embodiment of the application discloses: a heat exchanger with a built-in gas-liquid separation mechanism includes: the heat exchanger comprises a hollow shell, a first tube plate, a central cylinder and a heat exchange tube, wherein the two ends of the central cylinder are communicated; the first tube plate is connected with the inner side wall of the shell so that the shell is divided into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the condensate outlet, and the second inner cavity is communicated with the steam inlet; one end of the central cylinder is fixed on the first tube plate and penetrates through the first tube plate, the other end of the central cylinder extends towards the second inner cavity, one end of the second inner cavity, which is far away from the first inner cavity, penetrates through the side wall of the shell, and a turbolator is arranged on the inner side wall of the central cylinder; the heat exchange tube is spirally wound around the central cylinder, one end of the heat exchange tube penetrates through the first tube plate, and the other end of the heat exchange tube is communicated with the steam source through the steam inlet.

Specifically, the heat exchanger is still including setting up the second inner chamber is kept away from first inner chamber one end and is connected second tube sheet on the casing inside wall, second tube sheet rather than deviating from second inner chamber one side the inboard wall of casing encloses and constitutes the third inner chamber, the third inner chamber with steam inlet intercommunication, the heat exchange tube is kept away from the one end of first tube sheet is fixed on the second tube sheet and link up the second tube sheet with the third inner chamber intercommunication.

Specifically, one end of the central cylinder penetrating through the shell is fixed on the second tube plate.

Specifically, the turbolator is a spiral turbolator, and two ends of the spiral turbolator are respectively welded on the inner wall of the central cylinder.

Specifically, the shell comprises a straight-tube-shaped first part, a second part connected to one end of the first part, and a third part connected to the other end of the first part; the inner side wall of the second portion and the first tube plate enclose to form the first inner cavity, the inner side wall of the first portion and the first tube plate and the second tube plate enclose to form the second inner cavity, and the inner side wall of the third portion and the second tube plate enclose to form the third inner cavity.

Specifically, the cross sections, perpendicular to the axial direction, of the first portion, the second portion and the third portion are all circular, and the cross sections, perpendicular to the axial direction, of the second portion and the third portion are gradually reduced along a direction departing from the first portion.

Specifically, the central cylinder comprises a straight cylinder section and an elbow section, the straight cylinder section is integrally arranged in the second inner cavity, the elbow section is arranged in the third inner cavity, the straight cylinder section is fixedly connected with the first tube plate and the second tube plate respectively, and the elbow section penetrates through the side wall of the shell.

Specifically, the first portion of the housing is coaxially disposed with the straight section of the central cylinder.

The utility model discloses following beneficial effect has at least:

1. by adopting the central cylinder with two through ends as the gas-liquid separation mechanism, the gas-liquid separation can be realized without additionally arranging a gas-liquid separation device and on the premise of not increasing the volume of the heat exchanger.

2. A turbolator for catching condensate entrained in gas is arranged in the central cylinder serving as the gas-liquid separation mechanism, so that the amount of the condensate discharged along with the gas can be reduced, and the cleanliness of the discharged gas is improved.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a heat exchanger with a gas-liquid separation mechanism built in an embodiment of the present invention.

Reference numerals of the above figures: 1. a housing; 11. a steam inlet; 12. a condensate outlet; 13. a shell-side fluid inlet; 14. a shell-side fluid outlet; 2. a first tube sheet; 3. a central barrel; 4. a turbolator; 5. a heat exchange pipe; 6. a second tubesheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the heat exchanger with a built-in gas-liquid separation mechanism in the present embodiment includes a hollow casing 1, a first tube sheet 2, a center tube 3 having both ends penetrating therethrough, and a heat exchange tube 5. The shell 1 is provided with a steam inlet 11, a condensate outlet 12, a shell-side fluid inlet 13 and a shell-side fluid outlet 14 which penetrate through the side wall of the shell 1. First tube sheet 2 is connected with the inside wall of casing 1, specifically, first tube sheet 2 all around with the inside wall sealing connection of casing 1 to make the inside of casing 1 be divided into first inner chamber and second inner chamber, first inner chamber and condensate outlet 12 intercommunication, second inner chamber and steam inlet 11 intercommunication. One end of the central cylinder 3 is fixed on the first tube plate 2 and penetrates through the first tube plate 2, so that the inner cavity of the central cylinder 3 is communicated with the first inner cavity of the shell 1; the other end of the central cylinder 3 extends towards the second inner cavity of the shell 1 and penetrates through the side wall of the shell 1 at one end of the second inner cavity far away from the first inner cavity; the inner side wall of the central cylinder 3 can be welded with a turbolator 4. The heat exchange tube 5 is spirally wound on the central barrel 3, one end of the heat exchange tube 5 penetrates through the first tube plate 2 to be communicated with the first inner cavity, and the other end of the heat exchange tube 5 is communicated with a steam source through a steam inlet 11.

By means of the structure, when the heat transfer medium passes through the heat exchange tube 5 in a steam mode, the heat transfer medium is condensed under the heat transfer of the shell side fluid, the condensate flows out of the heat exchange tube 5 to the first inner cavity, the condensate and the non-condensable gas also flow into the first inner cavity together, and the non-condensable gas can be discharged through the inner wall of the central cylinder 3 communicated with the first inner cavity, so that the gas-liquid separation of the condensed medium is realized. Some condensate is carried in the non-condensable gas discharged from the first inner cavity, the condensate entrained in the non-condensable gas rises along with the non-condensable gas, one part of the condensate is automatically separated under the action of gravity, the other part of the condensate is captured by the turbolator 4, therefore, the condensate entrained in the non-condensable gas reaching the top outlet is less, and the cleanliness of the non-condensable gas is improved.

Specifically, as shown in fig. 1, the heat exchanger in this embodiment may further include a second tube plate 6 disposed at an end of the second inner chamber away from the first inner chamber and connected to an inner side wall of the shell 1. The second tube plate 6 and the inner side wall of the shell 1 on the side thereof departing from the second inner cavity enclose a third inner cavity, and the third inner cavity is communicated with the steam inlet 11. One end of the heat exchange tube 5, which is far away from the first tube plate 2, is fixed on the second tube plate 6 and penetrates through the second tube plate 6 to be communicated with the third inner cavity. Further, one end of the central tube 3 penetrating the shell 1 may be fixed to the tube sheet. More specifically, one end of the central tube 3 penetrating the shell 1 may also penetrate the second tube plate 6 to be fixed on the second tube plate 6, and further penetrate the shell 1 corresponding to the third inner cavity. By adopting the scheme that the heat exchange tube 5 and the central cylinder 3 are fixed on the second tube plate 6, the fixing strength of the heat exchange tube 5 and the central cylinder 3 can be improved, and meanwhile, a third inner cavity formed by the second tube plate 6 and the shell 1 in a surrounding mode can also isolate the steam inlet 11 from the second inner cavity so as to improve the sealing property of the second inner cavity and avoid the leakage of shell side fluid in the second inner cavity.

Continuing to refer to fig. 1, the housing 1 may include a first portion of a straight cylinder type, a second portion connected to one end of the first portion, and a third portion connected to the other end of the first portion (neither shown in the figures). Wherein, the inner side wall of the second part and the first tube plate 2 enclose to form a first inner cavity; the inner side wall of the first part, the first tube plate 2 and the second tube plate 6 enclose to form a second inner cavity; the inner side wall of the third part and the second tube plate 6 enclose to form a third inner cavity. The cross sections of the first portion, the second portion and the third portion, which are perpendicular to the axial direction, can be circular, and the cross sections of the second portion and the third portion, which are perpendicular to the axial direction, are gradually reduced along a direction departing from the first portion. Further, the central cylinder 3 may include a straight cylinder section disposed in the second inner chamber and an elbow section disposed in the third inner chamber, and the straight cylinder section and the elbow section are integrally connected. Wherein, the both ends of straight section of thick bamboo section are respectively with first tube sheet 2 and second tube sheet 6 fixed connection, and the elbow section can set up in the third inner chamber and link up the lateral wall of casing 1. The first portion of the housing 1 may be arranged coaxially with the straight section of the central cartridge 3. Further, the turbolator 4 in the present embodiment may be a helical turbolator. The two ends of the spiral turbolator are respectively welded on the inner wall of the central cylinder 3, preferably, the length of the spiral turbolator can be substantially equal to that of the straight cylinder section of the central cylinder 3, so that the catching capacity of the turbolator 4 on the condensate is improved.

In summary, the heat exchanger with the gas-liquid separation mechanism built therein in the present embodiment has the following advantages:

1. by adopting the central cylinder 3 with two through ends as the gas-liquid separation mechanism, the gas-liquid separation can be realized without additionally arranging a gas-liquid separation device and on the premise of not increasing the volume of the heat exchanger.

2. A turbolator 4 for catching condensate entrained in gas is arranged in the central cylinder 3 serving as the gas-liquid separation mechanism, so that the amount of the condensate discharged along with the gas can be reduced, and the cleanliness of the discharged gas is improved.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (8)

1. A heat exchanger with a built-in gas-liquid separation mechanism is characterized by comprising: the heat exchanger comprises a hollow shell, a first tube plate, a central cylinder and a heat exchange tube, wherein the two ends of the central cylinder are communicated; the first tube plate is connected with the inner side wall of the shell so that the shell is divided into a first inner cavity and a second inner cavity, the first inner cavity is communicated with the condensate outlet, and the second inner cavity is communicated with the steam inlet; one end of the central cylinder is fixed on the first tube plate and penetrates through the first tube plate, the other end of the central cylinder extends towards the second inner cavity, one end of the second inner cavity, which is far away from the first inner cavity, penetrates through the side wall of the shell, and a turbolator is arranged on the inner side wall of the central cylinder; the heat exchange tube is spirally wound around the central cylinder, one end of the heat exchange tube penetrates through the first tube plate, and the other end of the heat exchange tube is communicated with the steam source through the steam inlet.

2. The heat exchanger according to claim 1, further comprising a second tube plate disposed at an end of the second inner chamber far from the first inner chamber and connected to the inner side wall of the shell, wherein the second tube plate and the inner side wall of the shell at a side far from the second inner chamber enclose a third inner chamber, the third inner chamber is communicated with the steam inlet, and an end of the heat exchange tube far from the first tube plate is fixed on the second tube plate and penetrates through the second tube plate to be communicated with the third inner chamber.

3. The heat exchanger of claim 2, wherein the central cartridge is secured to the second tube sheet through one end of the shell.

4. The heat exchanger of claim 1, wherein the turbulator is a helical turbulator, and both ends of the helical turbulator are welded to the inner wall of the central cylinder, respectively.

5. The heat exchanger of claim 2, wherein the housing comprises a first portion of a straight cylinder type, a second portion connected to one end of the first portion, and a third portion connected to the other end of the first portion; the inner side wall of the second portion and the first tube plate enclose to form the first inner cavity, the inner side wall of the first portion and the first tube plate and the second tube plate enclose to form the second inner cavity, and the inner side wall of the third portion and the second tube plate enclose to form the third inner cavity.

6. The heat exchanger of claim 5, wherein the first, second and third portions are circular in cross-section perpendicular to the axial direction, and the cross-sections of the second and third portions perpendicular to the axial direction decrease in a direction away from the first portion.

7. The heat exchanger of claim 5, wherein the central tube includes a straight tube section integrally disposed in the second interior chamber and an elbow section disposed in the third interior chamber, the straight tube section being fixedly connected to the first tube sheet and the second tube sheet, respectively, and the elbow section extending through the side wall of the shell.

8. The heat exchanger of claim 7, wherein the first portion of the housing is disposed coaxially with the straight section of the central cylinder.

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