CN209820228U

CN209820228U - Filtering self-decontamination shell-and-tube heat exchanger

Info

Publication number: CN209820228U
Application number: CN201920663545.9U
Authority: CN
Inventors: 谭玉田
Original assignee: Jilin Mutual Benefit Energy Saving Technology Development Co Ltd
Current assignee: Jilin shintex Thermal Technology Co. Ltd.
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2019-12-20
Anticipated expiration: 2029-05-10

Abstract

Filter from scrubbing shell and tube type heat exchanger belongs to heat exchanger technical field, including shell and tube type heat exchanger body, tube side sewage import and filter screen. The tube pass sewage inlet is tangent to the side wall of the inner cavity of the lower tube box. The filter screen is sleeved outside the pipe pass sewage inlet. The utility model discloses an do the adjustment on original shell and tube type heat exchanger structure, let the fluid be tangential rotation and get into down the pipe case, form the whirl. The rotating flow and the wall of the cylinder of the heat exchanger generate certain friction force, so that most of the dirt is settled along the wall of the cylinder. Meanwhile, filter screens are arranged at the upper part of the tube pass sewage inlet and the lower part of the lower tube plate to filter out particle dirt entering from the outside, so that the dirt in the fluid entering the heat exchange tube is further filtered. The liquid after being filtered and settled by the rotational flow rises and enters the heat exchange tube, so that scaling and blockage are not easy to form, and the heat exchange efficiency is improved. Impurities such as dirt, particles and the like are settled downwards in a rotational flow state, and an automatic drain valve is arranged at a drain outlet at the lowest part of the lower pipe box, so that the dirt can be discharged at any time.

Description

Filtering self-decontamination shell-and-tube heat exchanger

Technical Field

The utility model belongs to the technical field of the heat exchanger, especially relate to a filter from scrubbing shell and tube type heat exchanger.

Background

The shell-and-tube heat exchanger is also called a shell-and-tube heat exchanger. The dividing wall type heat exchanger takes the wall surface of the tube bundle sealed in the shell as a heat transfer surface. The heat exchanger has the advantages of simple structure and reliable operation. Its tube side sewage import axis of traditional shell and tube type heat exchanger all intersects with the axis of shell and tube type heat exchanger is perpendicular, and tube side sewage radially gets into the heat exchanger inner chamber, and the fluid of radial entering is because of only can receiving the influence of gravity, and under original velocity of flow, impurity such as dirt and particulate matter hardly forms the filth and subsides and discharge from the drain, but along with the fluid enters into the heat exchange tube under certain velocity of flow, forms the dirt in the heat exchange tube easily, causes the heat exchange tube to block up even.

The patent (CN201320079036) named as the tangential double-liquid-inlet heat exchanger mainly aims at solving the problems that the shell-side medium is more polluted, a heat exchange tube is not a straight tube, but a spiral tube, the production can be realized only by a special clamping fixture, the processing difficulty is high, and the cost is high. And it is mainly directed against the working condition that the shell side medium contains dirt, and the dirt is difficult to discharge.

Therefore, there is a need in the art for a new solution to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a filter from scrubbing shell and tube type heat exchanger and be used for solving its tube side sewage of traditional shell and tube type heat exchanger and radially get into the heat exchanger inner chamber, impurity hardly forms the filth and subsides, forms the dirt in the heat exchange tube easily, causes the technical problem that the heat exchange tube blockked up even.

A filtering self-decontaminating shell-and-tube heat exchanger comprises a shell-and-tube heat exchanger body, a tube pass sewage inlet and a filter screen,

the shell-and-tube heat exchanger body is provided with a lower tube plate, a lower tube box and an automatic blow-down valve; the side wall of the inner cavity of the lower tube box is of a cylindrical structure, and the lower tube box is arranged at the lower part of the lower tube plate; the automatic blowdown valve is arranged at the lower part of the shell-and-tube heat exchanger body;

the pipe pass sewage inlet is communicated with the lower pipe box, the axis of the pipe pass sewage inlet is vertical to the axis of the lower pipe box, and the pipe pass sewage inlet is tangent to the side wall of the inner cavity of the lower pipe box;

the filter screen suit is in the outside of tube side sewage import, filter screen and the lower part swing joint of lower tube sheet.

The filter screen is a filter screen with the mesh number of 50-100 meshes.

The filter screen is the open cylinder structure of lower extreme, the upper end of filter screen and the lower part swing joint of low tube case, and the lower extreme of filter screen is uncovered to be the free end, and the lower extreme of filter screen is uncovered to be located the top of automatic blowoff valve, and the lateral wall of filter screen is provided with the mounting hole of suit tube side sewage import.

Through the above design scheme, the utility model discloses following beneficial effect can be brought:

the utility model discloses an adjust on original shell and tube type heat exchanger structure, make tube side sewage import tangential access lower tube case, when letting the fluid that contains the filth get into equipment from lower tube case, radially directly spout into equipment inside and become to be tangential rotation along the heat exchanger barrel from prior art and get into lower tube case, form the whirl. Because the fluid enters along the wall of the cylinder of the heat exchanger in a tangential rotating way, a certain friction force is generated, and most of dirt is settled along the wall of the cylinder. Meanwhile, filter screens are arranged at the upper part of the tube pass sewage inlet and the lower part of the lower tube plate to filter out particle dirt entering from the outside, so that the dirt in the fluid entering the heat exchange tube is further filtered. The liquid after being filtered and settled by the rotational flow rises and enters the heat exchange tube, so that scaling and blockage are not easy to form, and the heat exchange efficiency is improved. Impurities such as dirt, particles and the like are settled downwards in a rotational flow state, and an automatic drain valve is arranged at a drain outlet at the lowest part of the lower pipe box, so that the dirt can be discharged at any time.

The utility model discloses mainly be to the more operating mode of tube side filth, the difficult scale deposit in the heat exchange tube, and the filth can both be followed the lower part and discharged smoothly under the effect of gravity and rotatory settlement friction power, and the straight tube production and processing is easy, does not need special mould, easily production and processing. After the improvement, the dirt medium can be taken away from the tube side, and the clean medium can be taken away from the shell side. The pollution discharge can be well realized, the production and the processing are easy, the production cost is saved, and the effect is stronger.

Drawings

The invention is further described with reference to the following drawings and detailed description:

fig. 1 is the utility model discloses filter from scrubbing shell and tube type heat exchanger's schematic structure.

Fig. 2 is the utility model discloses filter from overlooking the schematic diagram of scrubbing shell and tube type heat exchanger.

In the figure, 1-a shell-and-tube heat exchanger body, 2-a tube pass sewage inlet, 3-a filter screen, 4-a lower tube plate, 5-a lower tube box and 6-an automatic blow-down valve.

Detailed Description

As shown in the figure, the filtering self-decontamination shell-and-tube heat exchanger comprises a shell-and-tube heat exchanger body 1, a tube pass sewage inlet 2 and a filter screen 3,

the shell-and-tube heat exchanger body 1 is provided with a lower tube plate 4, a lower tube box 5 and an automatic blowdown valve 6; the side wall of the inner cavity of the lower tube box 5 is of a cylindrical structure, and the lower tube box 5 is arranged at the lower part of the lower tube plate 4; the automatic blowdown valve 6 is arranged at the lower part of the shell-and-tube heat exchanger body 1;

the pipe pass sewage inlet 2 is communicated with the lower pipe box 5, the axis of the pipe pass sewage inlet 2 is vertical to the axis of the lower pipe box 5, and the pipe pass sewage inlet 2 is tangent to the side wall of the inner cavity of the lower pipe box 5;

the filter screen 3 is the open cylinder structure of lower extreme, the upper end of filter screen 3 and the lower part swing joint of low tube box 5, and the lower extreme of filter screen 3 is uncovered to be the free end, and the lower extreme of filter screen 3 is uncovered to be located automatic blowoff valve 6's top, and the lateral wall of filter screen 3 is provided with the mounting hole of suit tube side sewage import 2. The filter screen 3 is sleeved outside the tube pass sewage inlet 2 through a mounting hole, and the filter screen 3 is detachably connected with the lower part of the lower tube plate 4. The filter screen 3 is a stainless steel filter screen, and is generally selected from 50 meshes to 100 meshes according to the material properties.

Claims

1. Filter from scrubbing shell and tube type heat exchanger, characterized by: comprises a shell-and-tube heat exchanger body (1), a tube pass sewage inlet (2) and a filter screen (3),

the shell-and-tube heat exchanger body (1) is provided with a lower tube plate (4), a lower tube box (5) and an automatic blowdown valve (6); the side wall of the inner cavity of the lower tube box (5) is of a cylindrical structure, and the lower tube box (5) is arranged at the lower part of the lower tube plate (4); the automatic blowdown valve (6) is arranged at the lower part of the shell-and-tube heat exchanger body (1);

the pipe side sewage inlet (2) is communicated with the lower pipe box (5), the axis of the pipe side sewage inlet (2) is vertical to the axis of the lower pipe box (5), and the pipe side sewage inlet (2) is tangent to the side wall of the inner cavity of the lower pipe box (5);

the filter screen (3) is sleeved outside the tube pass sewage inlet (2), and the filter screen (3) is movably connected with the lower part of the lower tube plate (4).

2. The filtering self-decontaminating shell-and-tube heat exchanger of claim 1, wherein: the filter screen (3) is a filter screen with the mesh number of 50-100 meshes.

3. The filtering self-decontaminating shell-and-tube heat exchanger of claim 1 or 2, wherein: the utility model discloses a sewage treatment device, including filter screen (3), lower extreme is opened, filter screen (3) are the open cylinder type structure of lower extreme, the upper end of filter screen (3) and the lower part swing joint of lower pipe case (5), and the lower extreme of filter screen (3) is uncovered to be the free end, and the lower extreme of filter screen (3) is uncovered to be located the top of automatic blowoff valve (6), and the lateral wall of filter screen (3) is provided with the mounting hole of suit tube side sewage import (2).