阅读说明：本技术 一种高效的折流板式热交换器 (Efficient baffle plate type heat exchanger ) 是由 李娟� 王明帅 陈智龙 赵兴霞 张想花 李春锋 魏代文 于 2021-08-10 设计创作，主要内容包括：一种高效的折流板式热交换器,本发明涉及热交换器技术领域,筒体的左侧底部贯通连接有壳程介质进口,筒体的右侧顶壁贯通连接有壳程介质出口；左右两侧的管板之间贯通连接有若干根换热管,换热管的两端与左右两侧管箱贯通设置；拉杆的一端固定在左侧的管板上；所述折流板组由“7”字形折流板和“X”形折流板构成；“X”形折流板设置在筒体内部左端,且位于壳程介质进口的右侧；数个“7”字形折流板从左至右等距设置在位于“X”形折流板右侧的筒体内。有效改变了介质在壳程中的行走路径,增大了壳程介质与管程介质的热交换时间,使得热量交换更彻底；热交换效率高,热能得到比较大的利用、结构紧凑。(The invention relates to a high-efficiency baffle plate type heat exchanger, which relates to the technical field of heat exchangers.A shell side medium inlet is connected to the bottom of the left side of a cylinder in a penetrating way, and a shell side medium outlet is connected to the top wall of the right side of the cylinder in a penetrating way; a plurality of heat exchange tubes are connected between the tube plates on the left side and the right side in a run-through manner, and two ends of each heat exchange tube are arranged in a run-through manner with the tube boxes on the left side and the right side; one end of the pull rod is fixed on the left tube plate; the baffle group consists of a 7-shaped baffle plate and an X-shaped baffle plate; the X-shaped baffle plate is arranged at the left end in the cylinder and is positioned at the right side of the shell side medium inlet; a plurality of 7-shaped baffle plates are arranged in the cylinder body on the right side of the X-shaped baffle plate from left to right at equal intervals. The traveling path of the medium in the shell pass is effectively changed, and the heat exchange time of the shell pass medium and the tube pass medium is prolonged, so that the heat exchange is more thorough; high heat exchange efficiency, large utilization of heat energy and compact structure.)

1. A high efficiency baffle heat exchanger, characterized by: the heat exchanger comprises a tube box (1), a tube plate (2), a cylinder (3), heat exchange tubes (4), a pull rod (5) and a baffle group (6); tube plates (2) are fixed at the left end and the right end of the cylinder (3), tube boxes (1) are fixed at the outer sides of the tube plates (2), tube side medium outlets (1-1) are connected to the bottoms of the tube boxes (1) on the left side in a penetrating mode, and tube side medium inlets (1-2) are connected to the tops of the tube boxes (1) on the right side in a penetrating mode; the bottom of the left side of the cylinder body (3) is connected with a shell pass medium inlet (3-1) in a penetrating way, and the top wall of the right side of the cylinder body (3) is connected with a shell pass medium outlet (3-2) in a penetrating way; a plurality of heat exchange tubes (4) are connected between the tube plates (2) at the left side and the right side in a penetrating way, and two ends of each heat exchange tube (4) are arranged in a penetrating way with the tube boxes (1) at the left side and the right side; one end of the pull rod (5) is fixed on the left tube plate (2); the baffle group (6) consists of a 7-shaped baffle plate (6-1) and an X-shaped baffle plate (6-2); the X-shaped baffle plate (6-2) is arranged at the left end inside the cylinder (3) and is positioned at the right side of the shell side medium inlet (3-1); a plurality of 7-shaped baffle plates (6-1) are arranged in the cylinder body (3) on the right side of the X-shaped baffle plate (6-2) at equal intervals from left to right, and two adjacent 7-shaped baffle plates (6-1) are symmetrically arranged in front and back with the main axis of the cylinder body (3), and the side edge of one plate body of the 7-shaped baffle plates (6-1) is adjacent to the inner wall of the cylinder body (3); each plate body in the 7-shaped baffle plate (6-1) and the X-shaped baffle plate (6-2) is vertical to the horizontal plane and is arranged at an angle of 45 degrees with the main axis of the cylinder body (3); the 7-shaped baffle plate (6-1) and the X-shaped baffle plate (6-2) are respectively provided with a plurality of oval heat exchange tube holes (6-3), the heat exchange tubes (4) are arranged in the oval heat exchange tube holes (6-3) in a penetrating manner and fixed mode, and the pull rod (5) is arranged in the 7-shaped baffle plate (6-1) and the pull rod holes arranged in the X-shaped baffle plate (6-2) in a penetrating manner and fixed mode.

2. A high efficiency baffle heat exchanger as recited in claim 1 wherein: the 7-shaped baffle plate (6-1) is composed of a first plate body (6-1-1) and a second plate body (6-1-2), one edge of the first plate body (6-1-1) is fixed on one edge of the second plate body (6-1-2), and the joint of the first plate body and the second plate body is arranged on the main axis of the barrel body (3).

3. A high efficiency baffle heat exchanger as recited in claim 1 wherein: the X-shaped baffle plate (6-2) consists of a third plate body (6-2-1), a fourth plate body (6-2-2) and a fifth plate body (6-2-3); the third plate body (6-2-1) and the fourth plate body (6-2-2) are arranged in the same straight line and are respectively fixed on two side walls of the fifth plate body (6-2-3), and the joint of the third plate body and the fourth plate body is arranged on the main axis of the cylinder body (3).

4. A high efficiency baffle heat exchanger operating according to claim 1 wherein: two media needing heat exchange enter the tube box (1) and the barrel (3) from the tube side medium inlet (1-2) and the shell side medium inlet (3-1) respectively, the media entering the tube box (1) enter the heat exchange tube (4) after passing through the tube plate (2) and flow into the tube box (1) on the left side, and the media after heat exchange flow out from the tube side medium outlet (1-1) on the lower part of the tube box (1) on the left side; in a channel formed by a baffle group (6) through which a medium entering a cylinder (3) passes, a part of the medium is blocked by a fifth plate body (6-2-3) in an X-shaped baffle plate (6-2) to generate countercurrent and then flows rightwards, is blocked by a third plate body (6-2-1) to generate turbulent flow, and then continues to flow rightwards along the channel formed by a plurality of 7-shaped baffle plates (6-1); the other medium flows reversely through the fourth plate body (6-2-2) in the X-shaped baffle plate (6-2), flows rightwards along the inner wall of the cylinder body (3), flows reversely through the fifth plate body (6-2-3), flows backwards inside the cylinder body (3) along the edge of the fourth plate body (6-2-2) through the fourth plate body (6-2-2), finally joins with the partial medium which is blocked by the fifth plate body (6-2-3) and flows rightwards together, flows turbulently under the blocking action of the rightmost 7-shaped baffle plate (6-1), and finally flows out from the shell side medium outlet (3-2).

Technical Field

The invention relates to the technical field of heat exchangers, in particular to a high-efficiency baffle plate type heat exchanger.

Background

Heat exchangers (also known as heat exchangers or heat exchange devices) are devices used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements, and are an industrial application of convective and conductive heat transfer.

The baffle plate is an important part for improving the work efficiency of the heat exchanger. The baffle plate is used for supporting the heat exchange tube, enables a shell pass medium to generate ideal flow velocity, can reduce the unsupported span of the heat exchange tube to avoid fluid induced vibration, and has an important position in the shell pass design of the heat exchanger, no matter heat transfer or pressure drop, so that the reasonable baffle plate design can obtain satisfactory effects on heat transfer and pressure drop.

The existing baffle plate arrangement adopts a single structural form, and has short stroke, short heat exchange time and low efficiency; and the traditional horizontal baffle shell pass has a blind area (dead angle formed by the tube plate and the cylinder), so that the heat exchange efficiency is low.

Disclosure of Invention

The invention aims to provide a high-efficiency baffle type heat exchanger aiming at the defects and shortcomings of the prior art, effectively changes the traveling path of a medium in a shell side (part of the traveling path has counter flow and the flow path is increased), and increases the heat exchange time of the shell side medium and a tube side medium, so that the heat exchange is more thorough; high heat exchange efficiency, large utilization of heat energy and compact structure.

In order to achieve the purpose, the invention adopts the following technical scheme: the heat exchanger comprises a tube box, tube plates, a cylinder, heat exchange tubes, pull rods and baffle groups; tube plates are fixed at the left end and the right end of the cylinder body, tube boxes are fixed at the outer sides of the tube plates, the bottom of the tube box positioned at the left side is in through connection with a tube side medium outlet, and the top of the tube box positioned at the right side is in through connection with a tube side medium inlet; the bottom of the left side of the cylinder body is in through connection with a shell pass medium inlet, and the top wall of the right side of the cylinder body is in through connection with a shell pass medium outlet; a plurality of heat exchange tubes are connected between the tube plates on the left side and the right side in a run-through manner, and two ends of each heat exchange tube are arranged in a run-through manner with the tube boxes on the left side and the right side; one end of the pull rod is fixed on the left tube plate; the baffle group consists of a 7-shaped baffle plate and an X-shaped baffle plate; the X-shaped baffle plate is arranged at the left end in the cylinder and is positioned at the right side of the shell side medium inlet; a plurality of 7-shaped baffle plates are arranged in the cylinder body on the right side of the X-shaped baffle plate at equal intervals from left to right, and two adjacent 7-shaped baffle plates are symmetrically arranged in front and back directions by the main axis of the cylinder body, and the side edge of one plate body of the 7-shaped baffle plates is arranged adjacent to the inner wall of the cylinder body; each plate body in the 7-shaped baffle plate and the X-shaped baffle plate is vertical to the horizontal plane and is arranged at an angle of 45 degrees with the main axis of the cylinder body; the 7-shaped baffle plate and the X-shaped baffle plate are respectively provided with a plurality of oval heat exchange tube holes, the heat exchange tubes are arranged in the oval heat exchange tube holes in a penetrating mode and are fixed in the oval heat exchange tube holes, and the pull rods are arranged in the 7-shaped baffle plate and the pull rod holes formed in the X-shaped baffle plate in a penetrating mode and are fixed in the pull rod holes.

Preferably, the 7-shaped baffle plate is composed of a first plate body and a second plate body, one edge of the first plate body is fixed on one edge of the second plate body, and the joint of the first plate body and the second plate body is arranged on the main axis of the cylinder.

Preferably, the X-shaped baffle plate consists of a third plate body, a fourth plate body and a fifth plate body; the third plate body and the fourth plate body are arranged in the same straight line and are respectively fixed on two side walls of the fifth plate body, and the joints of the third plate body and the fourth plate body are arranged on a main axis of the barrel.

The working principle of the invention is as follows: two media needing heat exchange enter the tube box and the cylinder body from the tube side medium inlet and the shell side medium inlet respectively, the medium entering the tube box enters the heat exchange tube after passing through the tube plate and flows into the tube box on the left side, and the medium flows out from the tube side medium outlet on the lower part of the tube box on the left side after heat exchange; in a channel formed by the baffle groups, a part of medium entering the cylinder body is blocked by the fifth plate body in the X-shaped baffle plate to generate reverse flow, then flows rightwards, is blocked by the third plate body to generate turbulent flow, and then continuously flows rightwards along the channel formed by the 7-shaped baffle plates; the other medium flows reversely through the blocking of the fourth plate body in the X-shaped baffle plate, flows rightwards along the inner wall of the cylinder, flows reversely through the blocking of the fifth plate body, flows backwards along the edge of the fourth plate body after being blocked by the fourth plate body, finally joins with the partial medium which is blocked by the fifth plate body and flows reversely, flows rightwards together, and finally flows out through the shell pass medium outlet under the blocking effect of the 7-shaped baffle plate on the rightmost side.

Compared with the prior art, the invention has the beneficial effects that:

1. the medium part entering the cylinder body has counter flow and turbulent flow, so that the path of the medium passing through the cylinder body is effectively increased, the heat exchange time of the shell side medium and the tube side medium is prolonged, and the heat is fully exchanged;

2. the flow speed and the direction of the shell-side medium are periodically changed, the mixing of the shell-side medium is enhanced, and the heat exchange rate is further improved;

3. the angle formed by the tube plate and the cylinder body is often a blind area (dead angle) of the heat exchanger, almost does not participate in heat exchange at the position, and is energy and resource waste.

Description of the drawings:

fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a schematic view of the structure of the header, the shell, and the set of baffles of the present invention.

Fig. 5 is a schematic structural diagram of a first plate body according to the present invention.

Fig. 6 is a schematic structural diagram of a second plate body according to the present invention.

Fig. 7 is a schematic structural diagram of a third plate body in the invention.

Fig. 8 is a schematic structural diagram of a fourth plate body in the invention.

Fig. 9 is a schematic structural diagram of a fifth plate body according to the present invention.

FIG. 10 is a schematic view of the oval heat exchange tube hole opening position of the present invention.

FIG. 11 is a schematic view of the intersection angle between the "7" shaped baffle plate and the "X" shaped baffle plate, the tie rod and the heat exchange tube in the present invention.

Description of reference numerals:

the tube-side heat exchanger comprises a tube box 1, a tube-side medium outlet 1-1, a tube-side medium inlet 1-2, a tube plate 2, a cylinder 3, a shell-side medium inlet 3-1, a shell-side medium outlet 3-2, a heat exchange tube 4, a pull rod 5, a baffle group 6, a 7-shaped baffle plate 6-1, a first plate 6-1-1, a second plate 6-1-2, an X-shaped baffle plate 6-2, a third plate 6-2-1, a fourth plate 6-2-2, a fifth plate 6-2-3 and an oval heat exchange tube hole 6-3.

The specific implementation mode is as follows:

the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and the preferred embodiments in the description are only examples, and all other embodiments obtained by those skilled in the art without any inventive work belong to the protection scope of the present invention.

As shown in fig. 1 to fig. 11, the following technical solutions are adopted in the present embodiment: the tube type heat exchanger comprises a tube box 1, a tube plate 2, a cylinder 3, heat exchange tubes 4, a pull rod 5 and a baffle group 6; tube plates 2 are fixed at the left end and the right end of the cylinder 3, tube boxes 1 are fixed at the outer sides of the tube plates 2, tube side medium outlets 1-1 are connected to the bottoms of the tube boxes 1 on the left side in a penetrating mode, and tube side medium inlets 1-2 are connected to the tops of the tube boxes 1 on the right side in a penetrating mode; the bottom of the left side of the cylinder 3 is in through connection with a shell pass medium inlet 3-1, and the top wall of the right side of the cylinder 3 is in through connection with a shell pass medium outlet 3-2; a plurality of heat exchange tubes 4 are connected between the tube plates 2 at the left side and the right side in a run-through manner, and two ends of each heat exchange tube 4 are arranged in a run-through manner with the tube boxes 1 at the left side and the right side; one end of the pull rod 5 is fixed on the left tube plate 2; the baffle group 6 consists of a 7-shaped baffle 6-1 and an X-shaped baffle 6-2; the X-shaped baffle 6-2 is arranged at the left end inside the cylinder 3 and is positioned at the right side of the shell side medium inlet 3-1; a plurality of 7-shaped baffle plates 6-1 are arranged in the cylinder 3 on the right side of the X-shaped baffle plate 6-2 at equal intervals from left to right, and two adjacent 7-shaped baffle plates 6-1 are symmetrically arranged in front and back with the main axis of the cylinder 3, and the side edge of one plate body of the 7-shaped baffle plates 6-1 is adjacent to the inner wall of the cylinder 3; each plate body in the 7-shaped baffle plate 6-1 and the X-shaped baffle plate 6-2 is vertical to the horizontal plane and is arranged at an angle of 45 degrees with the main axis of the cylinder 3; the 7-shaped baffle plate 6-1 and the X-shaped baffle plate 6-2 are respectively provided with a plurality of oval heat exchange tube holes 6-3, the heat exchange tubes 4 are arranged in the oval heat exchange tube holes 6-3 in a penetrating manner, and the pull rods 5 are arranged in pull rod holes arranged in the 7-shaped baffle plate 6-1 and the X-shaped baffle plate 6-2 in a penetrating manner.

As a preferable scheme, furthermore, the 7-shaped baffle plate 6-1 is composed of a first plate body 6-1-1 and a second plate body 6-1-2, wherein the first plate body 6-1-1 and the second plate body 6-1-2 are two parts cut from the same elliptic plate body (see fig. 5-6); one edge of the first plate body 6-1-1 is fixed on one edge of the second plate body 6-1-2, and the joint of the first plate body and the second plate body is arranged on the main axis of the cylinder body 3.

As a preferable scheme, the X-shaped baffle plate 6-2 is composed of a third plate body 6-2-1, a fourth plate body 6-2-2 and a fifth plate body 6-2-3; the third plate body 6-2-1, the fourth plate body 6-2-2 and the fifth plate body 6-2-3 are three parts cut from the same elliptic plate body (see fig. 7-9); the third plate body 6-2-1 and the fourth plate body 6-2-2 are arranged in the same straight line and are respectively fixed on two side walls of the fifth plate body 6-2-3, and the joint of the third plate body and the fourth plate body is arranged on a main axis of the cylinder body 3.

The working principle of the specific embodiment is as follows: two media needing heat exchange enter the tube box 1 and the barrel 3 from the tube side medium inlet 1-2 and the shell side medium inlet 3-1 respectively, the media entering the tube box 1 enter the heat exchange tube 4 after passing through the tube plate 2 and flow into the tube box 1 on the left side, and the media after heat exchange flow out from the tube side medium outlet 1-1 on the lower part of the tube box 1 on the left side; in a channel formed by the baffle group 6, a medium entering the cylinder 3 is partially blocked by the fifth plate body 6-2-3 in the X-shaped baffle 6-2 to generate counter flow, then flows rightwards, is blocked by the third plate body 6-2-1 to generate turbulence, and then continuously flows rightwards along the channel formed by the 7-shaped baffle 6-1; the other medium is blocked by a fourth plate body 6-2-2 in the X-shaped baffle plate 6-2 to generate counter flow, then flows rightwards along the inner wall of the cylinder 3, is blocked by a fifth plate body 6-2-3 to generate counter flow, is blocked by the fourth plate body 6-2-2 and flows backwards to the inside of the cylinder 3 along the edge of the fourth plate body 6-2-2, finally is converged with a part of medium blocked by the fifth plate body 6-2-3 to generate counter flow, flows rightwards together, and finally generates turbulent flow under the blocking action of a rightmost 7-shaped baffle plate 6-1, and finally flows out from a shell pass medium outlet 3-2.

Compared with the prior art, the beneficial effects of the embodiment are as follows:

1. the medium part entering the cylinder body has counter flow and turbulent flow, so that the path of the medium passing through the cylinder body is effectively increased, the heat exchange time of the shell side medium and the tube side medium is prolonged, and the heat is fully exchanged;

2. the flow speed and the direction of the shell-side medium are periodically changed, the mixing of the shell-side medium is enhanced, and the heat exchange rate is further improved;

3. the angle formed by the tube plate and the cylinder body is often a blind area (dead angle) of the heat exchanger, almost does not participate in heat exchange at the position, and is energy and resource waste.

It will be appreciated by those skilled in the art that modifications and equivalents may be made to the embodiments described above, and that various modifications, equivalents, improvements and the like may be made without departing from the spirit and scope of the invention.