CN218994155U

CN218994155U - X-shaped shell-and-tube heat exchanger

Info

Publication number: CN218994155U
Application number: CN202223084617.5U
Authority: CN
Inventors: 韩军; 刘致远; 陈悦; 程广伟; 张大璇; 庞利洲; 于中原
Original assignee: Beijing Guangsha Huanneng Technology Co ltd
Current assignee: Beijing Guangsha Huanneng Technology Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-05-09
Anticipated expiration: 2032-11-21

Abstract

The utility model belongs to the technical field of heat exchangers, and discloses an X-shaped shell-and-tube heat exchanger. The X-shaped shell-and-tube heat exchanger comprises a shell and a distribution plate. Wherein, be provided with a plurality of shell side import and a plurality of shell side export on the casing, be provided with the heat exchange tube in the casing. The shell side inlet is provided with a distribution plate, the distribution plate is connected with the inner wall of the shell, a plurality of through hole groups are arranged on the distribution plate, each through hole group comprises a plurality of through holes which are arranged at intervals, each through hole group corresponds to the shell side inlet one by one, gas enters the shell through the shell side inlet, flows through the through hole groups and then flows out of the shell side outlet. The distribution plate in the X-shaped shell-and-tube heat exchanger can ensure that gas is uniformly dispersed in the shell, and the gas and the heat exchange tube are fully subjected to heat exchange.

Description

X-shaped shell-and-tube heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to an X-shaped shell-and-tube heat exchanger.

Background

The heat exchanger is an industrial application device for transferring hot fluid to cold fluid, has a plurality of heat exchanger types and is widely applied to industrial production such as petrochemical industry, coal chemical industry and the like. In the currently used gas-gas heat exchanger, if an E-type or J-type tubular heat exchanger is adopted, the problems of high flow rate of gas outside the tube, large pressure drop, large vibration of equipment and the like may exist.

The adoption of the X-shaped heat exchanger can effectively avoid the problems, however, in the existing X-shaped heat exchanger, gas has no baffling effect in a shell pass, the gas is unevenly distributed in the shell pass, the internal space of the shell and the heat of the heat exchange tube cannot be fully utilized for heat exchange, and the heat exchange effect is poor.

Therefore, there is a need to provide an X-type shell-and-tube heat exchanger to solve the above problems.

Disclosure of Invention

The utility model aims to provide an X-shaped shell-and-tube heat exchanger, wherein a distribution plate in the X-shaped shell-and-tube heat exchanger can uniformly disperse gas in a shell, so that sufficient heat exchange between the gas and a heat exchange tube is ensured.

To achieve the purpose, the utility model adopts the following technical scheme:

an X-type shell and tube heat exchanger comprising:

the shell is provided with a plurality of shell side inlets and a plurality of shell side outlets, and a heat exchange tube is arranged in the shell;

the distribution board, shell side import department is provided with the distribution board, the distribution board with the inner wall connection of casing, be provided with a plurality of through-hole groups on the distribution board, the through-hole group includes the through-hole that a plurality of intervals set up, the through-hole group with shell side import one-to-one sets up, and gas passes through shell side import entering the inside of casing, after flowing through the through-hole, follow again shell side export flows.

Optionally, each through hole group includes a circular hole group and a strip hole group, the circular hole group includes a plurality of circular holes that are the annular array and arrange, the circular hole group just to shell side import setting, the strip hole group includes a plurality of strip holes, a plurality of strip holes around the circular hole group sets up.

Optionally, the circular hole group comprises a plurality of circles of circular holes distributed in an annular array, and the diameters of the circular holes are sequentially increased from the inner circle to the outer circle.

Optionally, the distribution plate is an arc plate curved toward the central axis of the housing.

Optionally, the both ends of distributing plate are provided with the curb plate, the curb plate with shells inner wall and the distributing plate is connected, be provided with the curb plate hole on the curb plate.

Optionally, the material of the distribution plate and/or the side plate is carbon steel or low alloy steel or stainless steel.

Optionally, the distribution plate and the side plate are welded with the inner wall of the shell.

The beneficial effects are that:

according to the X-shaped shell-and-tube heat exchanger provided by the utility model, the distribution plate is arranged at the inlet of the shell side, the plurality of through holes are formed in the distribution plate at intervals, and gas is dispersed through the through holes simultaneously after entering from the inlet of the shell side and is further uniformly distributed in the shell, so that the generation of heat exchange dead angles in the shell is effectively avoided, and heat exchange is fully performed with the heat exchange tube. According to the shell provided by the utility model, the shell side inlets are arranged, so that the through holes on the distribution plate are arranged into a plurality of groups according to the shell side inlets, and each group of through hole groups is correspondingly arranged with the shell side inlets, so that gas is uniformly dispersed to a great extent, and the heat exchange efficiency is improved.

Drawings

FIG. 1 is a schematic view of a distribution plate according to the present utility model;

fig. 2 is a front view of an X-type shell-and-tube heat exchanger provided by the present utility model;

fig. 3 is a side view of an X-type shell-and-tube heat exchanger provided by the present utility model.

In the figure:

100. a housing; 110. a shell side inlet; 120. a shell side outlet; 130. a tube side inlet; 140. a tube side outlet; 150. a sewage outlet; 200. a distribution plate; 300. a heat exchange tube; 400. a group of through holes; 410. a circular set of holes; 420. a strip-shaped hole group; 500. a side plate; 510. side plate holes; 600. a support plate; 700. and (3) a saddle.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Referring to fig. 1 and 2, the present embodiment provides an X-type shell-and-tube heat exchanger including a housing 100 and a distribution plate 200. The casing 100 is provided with a plurality of shell side inlets 110 and a plurality of shell side outlets 120, and the heat exchange tube 300 is provided in the casing 100. The shell side inlet 110 is provided with a distribution plate 200, the distribution plate 200 is connected with the inner wall of the shell 100, the distribution plate 200 is provided with a plurality of through hole groups 400, each through hole group 400 comprises a plurality of through holes which are arranged at intervals, the through hole groups 400 are arranged in one-to-one correspondence with the shell side inlet 110, gas enters the shell 100 through the shell side inlet 110, flows through the through hole groups 400 and then flows out of the shell side outlet 120.

According to the X-shaped shell-and-tube heat exchanger, the distribution plate 200 is arranged at the shell side inlet 110, the plurality of through holes are formed in the distribution plate 200 at intervals, and gas is dispersed through the through holes simultaneously after entering from the shell side inlet 110, so that the gas is uniformly distributed in the shell 100, the heat exchange dead angle generated in the shell 100 is effectively avoided, and heat exchange is fully performed with the heat exchange tube 300. The shell 100 in this embodiment is provided with a plurality of shell side inlets 110, so that the through holes on the distribution plate 200 are arranged into a plurality of groups according to the shell side inlets 110, each group of through hole groups 400 is correspondingly arranged with each shell side inlet 110, so that gas is uniformly dispersed to a great extent, the heat of the heat exchange tube 300 is fully utilized, and the heat exchange efficiency is increased.

Further, with continued reference to fig. 1, each of the through-hole sets 400 includes a circular hole set 410 and a bar-shaped hole set 420, the circular hole set 410 including a plurality of circular holes arranged in an annular array, the circular hole set 410 being disposed opposite the shell side inlet 110, the bar-shaped hole set 420 including a plurality of bar-shaped holes disposed around the circular hole set 410. In this embodiment, the distribution area of the circular hole group 410 may be set according to the inlet size of the shell side inlet 110. It is required that a certain amount of gas can be guaranteed to pass through the right upper side of the shell side inlet 110, and part of the gas can be blocked and then dispersed to the strip-shaped holes around the round holes, the area of the strip-shaped holes is larger than that of the round holes, the gas flow is large, the gas can be easily diffused to the periphery, and the heat exchange four corners inside the shell 100 are prevented.

Further, the circular hole group 410 includes a plurality of circles of circular holes distributed in an annular array, and the diameters of the circular holes sequentially increase from the inner circle to the outer circle. With this structure, gas can be dispersed advantageously, and the gas can be prevented from flowing out from the shell side inlet 110 and then directly flowing to the shell side outlet 120, which results in short heat exchange time and influences the heat exchange efficiency. Referring to fig. 1, in this embodiment, a circular hole is formed on the distribution plate 200 at a position opposite to the center of the shell side inlet 110, the diameter of the circular hole is 20mm, the diameter of the circular hole is increased by 5mm from the inner ring to the outer ring, the radial minimum distance between adjacent circular holes is 5mm, and the center of the circular hole of the outermost ring is arranged along the edge of the orifice of the shell side inlet 110. The length of the strip-shaped holes is greater than or equal to the radial length of the circular hole sets 410. In fig. 3, the spacing between the plurality of strip-shaped holes arranged in parallel is 10mm, and the distance from the edge of the strip-shaped holes to the edge of the distribution plate 200 is greater than or equal to 20mm. It is understood that in other embodiments, the shape, size, and spacing between adjacent through holes are set according to actual needs, and any arrangement manner that facilitates gas dispersion is within the scope of the present application.

Alternatively, referring to fig. 2 and 3, the distribution plate 200 is an arcuate plate curved toward the central axis of the housing 100, with the shell side inlet 110 fully enclosed in the arcuate plate. Further, the two ends of the distribution plate 200 are provided with side plates 500, and the side plates 500 are connected with the inner wall of the housing 100 and the distribution plate 200, and optionally, the distribution plate 200 and the side plates 500 are welded with the inner wall of the housing 100. Further, the side plate 500 is provided with side plate holes 510, and gas can be dispersed from the side plate holes 510 to the outside of the distribution plate 200, in this embodiment, the side plate 500 is provided with two strip-shaped side plate holes 510, and in other embodiments, the size and number of the openings of the side plate holes 510 can be set according to the actual size of the side plate 500 and the gas flow requirement.

Optionally, the material of the distribution plate 200 and/or the side plate 500 is carbon steel or low alloy steel or stainless steel. When carbon steel and low alloy steel are selected, the thickness of the plate is not less than 5mm; when stainless steel is selected, the thickness of the plate is not less than 3mm.

Further, referring to fig. 2, a support plate 600 is further provided in the x-type shell-and-tube heat exchanger, the support plate 600 being connected to the inner wall of the housing 100 and disposed in a vertical direction, and the heat exchange tube 300 being disposed through the support plate 600. The support plate 600 supports the heat exchange tube 300, and both left and right sides thereof may be welded to the inner wall of the case 100. The shell 100 is further provided with a tube side inlet 130 and a tube side outlet 140, and the tube side inlet 130 and the tube side outlet 140 are both communicated with the heat exchange tube 300. A drain 150 is provided on the housing 100 for temporarily discharging gas and liquid. The bottom of the housing 100 is provided with a saddle for supporting the heat exchanger. Alternatively, the distribution plate 200 may be disposed at the shell side outlet 120 as needed, which is not particularly limited herein. In this embodiment, the shell side inlet 110 is located at the bottom of the housing 100, the shell side outlet 120 is located at the top of the housing 100, and the shell side inlet 110 and the shell side outlet 120 are concentrically arranged, but in other cases, the positions of the shell side inlet 110 and the shell side outlet 120 may be arranged according to specific needs.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

An x-tube and shell heat exchanger comprising:

the shell comprises a shell (100), wherein a plurality of shell side inlets (110) and a plurality of shell side outlets (120) are arranged on the shell (100), and a heat exchange tube (300) is arranged in the shell (100);

distribution board (200), shell side import (110) department is provided with distribution board (200), distribution board (200) with the inner wall connection of casing (100), be provided with a plurality of through-hole group (400) on distribution board (200), through-hole group (400) are including the through-hole that a plurality of intervals set up, through-hole group (400) with shell side import (110) one-to-one sets up, and gas passes through shell side import (110) get into the inside of casing (100), flow through after the through-hole, follow shell side export (120) again flows.
2. The X-tube and shell heat exchanger according to claim 1, wherein each of the through hole groups (400) comprises a circular hole group (410) and a strip hole group (420), the circular hole group (410) comprising a plurality of circular holes arranged in an annular array, the circular hole group (410) being disposed opposite the shell side inlet (110), the strip hole group (420) comprising a plurality of strip holes, a plurality of the strip holes being disposed around the circular hole group (410).
3. The X-tube and shell heat exchanger according to claim 2, wherein the set of circular holes (410) comprises a plurality of circles of the circular holes distributed in an annular array, the diameter of the circular holes increasing in sequence from the inner circle to the outer circle.
4. The X-tube and shell heat exchanger according to claim 1, wherein the distribution plate (200) is an arc plate curved towards the central axis of the housing (100).
5. The X-type shell and tube heat exchanger according to any one of claims 2-4, wherein side plates (500) are provided at both ends of the distribution plate (200), the side plates (500) are connected to the inner wall of the shell (100) and the distribution plate (200), and side plate holes (510) are provided in the side plates (500).
6. The X-tube and shell heat exchanger according to claim 5, wherein the distribution plate (200) and/or the side plates (500) are made of carbon steel or low alloy steel or stainless steel.
7. The X-tube and shell heat exchanger according to claim 5, wherein the distribution plate (200), the side plates (500) are welded to the inner wall of the housing (100).