CN209857707U

CN209857707U - High flow velocity plate shell heat exchanger

Info

Publication number: CN209857707U
Application number: CN201920672526.2U
Authority: CN
Inventors: 李永堂
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2019-12-27
Anticipated expiration: 2029-05-13

Abstract

The utility model relates to a high flow velocity plate shell heat exchanger, which comprises a shell and a plurality of sheets which are longitudinally and fixedly arranged in the shell in parallel, wherein the sheets are mutually welded by four sides of two metal plates correspondingly, a medium channel is arranged in the shell, the inlet end of the medium channel is fixedly connected with a sheet medium inlet pipe, and the outlet end of the medium channel is fixedly connected with a sheet medium outlet pipe; a baffle plate is also arranged in the shell and positioned between two adjacent plate sheets, the upper side edge and the lower side edge of the baffle plate are respectively fixed with the upper wall plate and the lower wall plate of the shell, one side edge of the baffle plate is fixed with one side wall plate of the shell, and a baffling opening is reserved between the other side edge and the side wall plate of the side shell; the plate type heat exchanger also comprises an inlet end collecting pipe and an outlet end collecting pipe which are respectively arranged outside the shell, wherein the plate type medium inlet pipe is connected with the inlet end collecting pipe, and the plate type medium outlet pipe is connected with the outlet end collecting pipe. The purpose of improving the heat exchange efficiency is achieved by improving the flow velocity of the shell pass fluid, and the problems of dirty blockage and scaling of the plate are better solved.

Description

High flow velocity plate shell heat exchanger

Technical Field

The utility model relates to a lamella heat exchanger.

Background

The plate-shell type heat exchanger has the outstanding advantages of compact structure, light weight and large heat transfer area in unit volume. In use, the shell-side path is short, the height of a shell-side flow channel is large, and the flow velocity of shell-side fluid of the conventional plate-shell heat exchanger is far lower than that of plate-side medium, so that the heat exchange efficiency is greatly influenced. In addition, due to the inherent characteristic of narrow shell pass flow channels of the plate shells, the outer surfaces of the plates are easy to scale, and the plates are troublesome to clean after scaling, and the scaling of the plates is aggravated due to the low flow velocity of shell pass fluid.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a high flow rate plate shell heat exchanger is provided, reach the purpose that improves heat exchange efficiency through improving the shell side fluid flow rate to solve the dirty stifled and scale deposit problem of slab better.

The technical scheme of the utility model as follows:

high flow rate plate shell heat exchanger, including the casing with vertically parallel fixed mounting at a plurality of sheets of inside of casing, its characterized in that: the four sides of the sheet are welded with each other correspondingly, a medium channel is arranged in the sheet, the inlet end of the medium channel is fixedly connected with a sheet medium inlet pipe, and the outlet end of the medium channel is fixedly connected with a sheet medium outlet pipe; a baffle plate is also arranged in the shell and positioned between two adjacent plate sheets, the upper side edge and the lower side edge of the baffle plate are respectively fixed with the upper wall plate and the lower wall plate of the shell, one side edge of the baffle plate is fixed with one side wall plate of the shell, and a baffling opening is reserved between the other side edge and the side wall plate of the side shell; the high-flow-velocity plate-shell heat exchanger further comprises an inlet end collecting pipe and an outlet end collecting pipe which are respectively arranged outside the shell, the plate medium inlet pipe is connected with the inlet end collecting pipe, and the plate medium outlet pipe is connected with the outlet end collecting pipe.

Preferably, a horizontal baffle is respectively arranged above and below the plate; the left and right sides of horizontal baffle is connected with casing left and right sides wall respectively, and the front and back both sides of horizontal baffle are connected with baffling board or casing lateral wall respectively, and the downside of the horizontal baffle of top leans on the upper end of slab or has the clearance with the upper end of slab, and the upside of the horizontal baffle of below leans on the lower extreme of slab or has the clearance with the lower extreme of slab.

Preferably, the number of plates between the outermost baffle and the side wall of the side casing and between adjacent baffles is the same.

The utility model has the advantages of:

the end part of the plate is provided with a medium inlet and outlet pipe and is connected with a collecting pipe on the outer side of the shell through the medium inlet and outlet pipe, on the basis, the baffle plate can be conveniently arranged in the shell to lengthen a shell pass flow passage, so that the flow velocity of shell pass fluid is greatly too high, and the matching performance of the shell pass fluid and the flow velocity of plate pass medium is better.

Through the utility model discloses a structure, the shell side fluid velocity of flow improves than conventional lamella heat exchanger by a wide margin. Therefore the utility model discloses can obviously improve heat exchange efficiency to because the shell side fluid velocity of flow increases substantially, the dirty stifled and scale deposit problem in slab surface obtains effective control, has improved the anti-scaling performance and the corrosion resisting property of heat exchanger.

In the technical scheme of arranging the horizontal baffle, the shell-side fluid channel is basically as high as the plate, the flow channel is more favorable for improving the flow velocity of the shell-side fluid, the ineffective contact of shell-side and plate-side heat exchange is further reduced, and the heat exchange efficiency is further improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic side view of an embodiment of the present invention with the plate and housing removed in front of the baffle to show the entire baffle.

Fig. 3 is a schematic structural diagram of an embodiment of the present invention with a horizontal baffle.

Detailed Description

The invention will be further described with reference to the following examples and drawings.

As shown in fig. 1 and 2, the embodiment of the present invention includes a housing 1 and a plurality of plates 2 longitudinally and fixedly mounted inside the housing 1 in parallel. The front side wall and the rear side wall of the shell 1 are respectively provided with a shell pass outlet 4 and a shell pass inlet 7. The plate 2 belongs to a plate type heat exchange plate, four edges of two metal plates are correspondingly welded with each other, a medium channel is arranged in the plate, a plate medium inlet pipe 5 is fixedly connected with an inlet end of the medium channel, and a plate medium outlet pipe 8 is fixedly connected with an outlet end of the medium channel. The plate medium inlet pipe 5 and the plate medium outlet pipe 8 can be positioned at the same end part of the plate 2 or at two ends of the plate 2 respectively.

The embodiment of the utility model also comprises an inlet end collecting pipe 6 and an outlet end collecting pipe 9 which are respectively arranged outside the shell 1. The plate medium inlet pipe 5 is connected with the inlet end header 6, and the plate medium outlet pipe 8 is connected with the outlet end header 9.

The first scheme is as follows: the inlet header 6 and the outlet header 9 are respectively located on the left and right sides of the casing 1. This arrangement is suitable for the case where the aforementioned slab medium inlet pipe 5 and slab medium outlet pipe 8 are located at both ends of the slab 2, respectively, as shown in fig. 1 and 2.

The second scheme is as follows: the inlet header 6 and the outlet header 9 are located at the same end of the plate 2, not shown in the figures. This arrangement is suitable for the case where the aforementioned slab medium inlet pipe 5 and slab medium outlet pipe 8 are located at the same end of the slab 2.

In both cases, the inlet header 6 and the outlet header 9 may be located outside the shell side walls or may be fixedly mounted on the outer surfaces of the shell side walls.

A baffle plate 3 is further arranged in the shell 1, the baffle plate 3 is located between two adjacent plate sheets, the upper side edge and the lower side edge of the baffle plate are respectively fixed with the upper wall plate and the lower wall plate of the shell 1, one side edge of the baffle plate is fixed with one side wall plate of the shell 1, and a baffling opening is reserved between the other side edge and the side wall plate of the shell. The baffling openings of the adjacent baffle plates are respectively positioned on the left and right opposite sides of the shell.

As a modification, another embodiment of the present invention further includes horizontal baffle plates 10 disposed above and below the sheet 2, respectively. The left side and the right side of the horizontal baffle plate 10 are respectively connected with the left side wall and the right side wall of the shell 1, the front side and the rear side of the horizontal baffle plate 10 are respectively connected with the baffle plate 3 or the shell side wall, the lower side of the upper horizontal baffle plate 10 leans against the upper end of the plate 2 or has a small gap with the upper end of the plate 2, and the upper side of the lower horizontal baffle plate 10 leans against the lower end of the plate 2 or has a small gap with the lower end of the plate 2.

The number of plates between the outermost baffle and the side wall of the side shell and between adjacent baffles is preferably the same to form the most common shell-side fluid channels of equal width.

Use examples: the heating medium flows from the inlet header 6 into each plate through the plate medium inlet pipe 5 and flows into the outlet header 9 through the plate medium outlet pipe 8. Meanwhile, cold water enters the shell 1 from the shell side inlet 7, exchanges heat with the two outermost plates, enters the middle part from the baffle plate at the left end of the baffle plate at the outermost side, exchanges heat with the two middle plates, exchanges heat with the two inner plates inwards through the baffle plate at the right end of the inner baffle plate, and finally flows out through the shell side outlet 4.

Claims

1. High flow rate plate shell heat exchanger, including casing (1) and vertical a plurality of sheets of board pieces (2) of fixed mounting in casing (1) inside side by side, its characterized in that: the four sides of the plate (2) are welded with each other correspondingly by two metal plates, a medium channel is arranged in the plate, the inlet end of the medium channel is fixedly connected with a plate medium inlet pipe (5), and the outlet end of the medium channel is fixedly connected with a plate medium outlet pipe (8); a baffle plate (3) is further mounted in the shell (1), the baffle plate (3) is positioned between two adjacent plate sheets, the upper side and the lower side of the baffle plate are respectively fixed with the upper wall plate and the lower wall plate of the shell (1), one side of the baffle plate is fixed with one side wall plate of the shell (1), and a baffling port is reserved between the other side of the baffle plate and the side wall plate of the side shell; the high-flow-velocity plate-shell heat exchanger further comprises an inlet end collecting pipe (6) and an outlet end collecting pipe (9) which are respectively arranged outside the shell (1), the plate medium inlet pipe (5) is connected with the inlet end collecting pipe (6), and the plate medium outlet pipe (8) is connected with the outlet end collecting pipe (9).

2. The high flow rate plate and shell heat exchanger of claim 1, wherein: a horizontal baffle (10) is respectively arranged above and below the plate (2); the left side and the right side of the horizontal baffle (10) are respectively connected with the left side wall and the right side wall of the shell (1), the front side and the rear side of the horizontal baffle (10) are respectively connected with the baffle (3) or the side wall of the shell, the lower side surface of the horizontal baffle (10) above leans against the upper end of the plate (2) or has a gap with the upper end of the plate (2), and the upper side surface of the horizontal baffle (10) below leans against the lower end of the plate (2) or has a gap with the lower end of the plate (2).

3. The high flow rate plate and shell heat exchanger of claim 1 or 2, wherein: the number of the plates between the outermost baffle plate and the side wall of the side shell and between the adjacent baffle plates is the same.