CN215984179U - High pressure heat exchanger divides journey case diversion system - Google Patents

Abstract

The utility model discloses a high-pressure heat exchanger pass box flow guide system, which comprises a tube box shell, a tube pass inlet, a tube pass outlet, an auxiliary pass partition plate, a main pass partition plate and a flow guide groove, wherein the tube pass inlet is arranged in the tube pass outlet; the tube pass inlet and the tube pass outlet are positioned at the top and the bottom of the tube box shell, and U-shaped notches are formed in the contact positions of the upper side and the lower side of the main branch partition plate and the tube pass inlet and the tube pass outlet; the U-shaped notch is provided with a diversion trench which protrudes towards the direction far away from the inlet and outlet of the tube bundle, the longitudinal section of the diversion trench has the same shape as the U-shaped notch formed by the main partition board, and the diversion trench is welded with the main partition board to form non-leakage connection; the auxiliary pass partition plate is fixed on the channel box shell and the main pass partition plate. The utility model can make the manufacture and installation of the tube pass inlet and outlet relatively convenient.

Description

High pressure heat exchanger divides journey case diversion system

Technical Field

The utility model belongs to the technical field of heat exchangers, and particularly relates to a flow guide system of a high-pressure heat exchanger split-range box.

Background

In the fields of petroleum, chemical engineering, metallurgy, electric power, nuclear power and the like, the heat exchanger is a place where heat exchange is completed by a medium, so that the temperature rise and the temperature reduction of the medium are realized, and the application range is very wide. The U-shaped tube shell-and-tube heat exchanger is the most common type of heat exchanger, and has the advantages of free expansion and contraction of the tube bundle, simple structure, convenient inspection and maintenance and easy cleaning, and is widely applied. When the tube pass number of the horizontal U-shaped tube heat exchanger reaches four tube passes or above, the pass partition plate in the tube box is often positioned at the vertical center line of the tube body, the tube pass inlet and outlet are mostly arranged eccentrically, namely non-radially, and an air outlet or a condensation outlet is required to be arranged close to the top and the bottom of the tube pass shell respectively. For a high-pressure heat exchanger, because a tube pass shell is often thick, and in addition, the connection part of an eccentrically arranged tube pass inlet and outlet and the tube pass shell is asymmetric and irregular in shape, the processing of the shell and an opening groove is time-consuming, and the welding quality is difficult to ensure because automatic welding cannot be implemented. Particularly, an embedded welding joint is adopted, when the pipe pass inlet and outlet are designed to be of a flanging structure, the requirement on the precision of groove processing is higher, and the difficulty in welding the opening and the shell is higher; the other solution is that the tube pass inlet and outlet and the central line form an included angle, so the tube pass inlet and outlet can be arranged radially, the joint of the tube pass inlet and outlet and the tube pass shell is of a symmetrical structure, but an elbow or a bent pipe is required to be added to the tube pass inlet and outlet.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems of asymmetric pipe pass inlet and outlet and difficult manufacturing and processing at the joint of a pipe pass shell of the existing four-pipe pass and above high-pressure heat exchangers, the utility model provides a flow guide system of a high-pressure heat exchanger branch box, which enables the pipe pass inlet and outlet to be manufactured and installed relatively conveniently.

The utility model provides a high-pressure heat exchanger pass box flow guide system which comprises a tube box shell, a tube pass inlet, a tube pass outlet, an auxiliary pass partition plate, a main pass partition plate and a flow guide groove, wherein the tube pass inlet is arranged at the bottom of the tube box shell; the tube pass inlet and the tube pass outlet are positioned at the top and the bottom of the tube box shell, and U-shaped notches are formed in the contact positions of the upper side and the lower side of the main branch partition plate and the tube pass inlet and the tube pass outlet; the U-shaped notch is provided with a diversion trench which protrudes towards the direction far away from the inlet and outlet of the tube bundle, the longitudinal section of the diversion trench has the same shape as the U-shaped notch formed by the main partition board, and the diversion trench is welded with the main partition board to form non-leakage connection; the auxiliary pass partition plate is fixed on the channel box shell and the main pass partition plate.

The flow guide groove guides the fluid flowing into the tube box from the tube pass inlet or the fluid flowing out of the tube box from the tube pass outlet, and the fluid flowing in or out from the other side of the main partition board is completely guided into the opposite area of the partition board by utilizing the U-shaped notch formed on the main partition board.

The diversion trench can be a part of a circular cylinder or a square cylinder, and can also be in any other shape, and is preferably a part of a circular cylinder from the viewpoint of convenient manufacture. In order to better form a leakage-free connection with the pipe pass inlet and outlet, the diversion trench can be composed of a semi-cylinder body and a semi-end enclosure.

The tube box shell can be composed of a cylinder and a seal head.

The number of the auxiliary pass partition plates can be set according to the specific number of tube passes.

The utility model has the following beneficial effects:

1) in the high-pressure heat exchanger occasion of four tube passes and above, the tube pass inlet and outlet can still be positioned at the top and the bottom and arranged radially, so that the manufacture and the processing of the tube pass inlet and outlet are more convenient;

2) after the tube pass inlet and outlet are positioned at the top and the bottom, an exhaust port and a condensate discharge port can be omitted, the reliability of high-voltage equipment is improved, the manufacturing difficulty is reduced, and the safety of the equipment, particularly the safety during shutdown, is improved.

Drawings

FIG. 1 is a schematic diagram of a prior art configuration;

FIG. 2 is another schematic structure of the prior art;

FIG. 3 is a schematic diagram of an embodiment of the present invention;

FIG. 4 is a schematic diagram of the construction of the main dividing partition of the present invention;

fig. 5 is a schematic perspective view of fig. 3.

In the figure: the method comprises the following steps of 1-a tube box shell, 2-a tube pass inlet, 3-an auxiliary pass partition plate, 4-a tube pass outlet, 5-a main pass partition plate, 6-a flow guide groove, 7-a U-shaped notch, 8-an exhaust port and 9-a condensation discharge port.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the prior art, in which an arrangement of a tube pass inlet 2 and a tube pass outlet 4 is eccentrically arranged with respect to a tube pass housing 1, a connection between the eccentrically arranged tube pass inlet and outlet and the tube pass housing 1 is asymmetric, and particularly, in the case where the tube pass inlet and outlet are designed to be in a "flanging" structure and connected with the tube pass housing 1, the shape of the tube pass inlet and outlet is irregular, which makes the manufacture difficult, and an exhaust port 8 and a condensation discharge port 9 are additionally required.

Fig. 2 is another schematic structural diagram of the prior art, in which a tube pass inlet 2 and a tube pass outlet 4 are arranged at a certain included angle with a central line, so that the tube pass inlet and outlet can be radially arranged, the joint of the tube pass inlet and outlet and the tube box shell 1 is of a symmetrical structure, but an elbow or a bent tube is required to be added to the tube pass inlet and outlet, which is still difficult to manufacture, and an exhaust port 8 and a condensate discharging port 9 are also required to be additionally arranged.

Fig. 3 is a schematic structural diagram of the present invention, and as shown in the drawing, the tube box of the present invention has a four-pass structure, and mainly includes a tube box casing 1, a tube-pass inlet 2, a secondary pass partition plate 3, a tube-pass outlet 4, a primary pass partition plate 5, and a diversion trench 6; the tube pass inlet 2 and the tube pass outlet 4 are positioned at the top and the bottom of the tube box shell 1, and U-shaped notches 7 are formed at the contact positions of the upper side and the lower side of the main branch partition plate 5 with the tube pass inlet 2 and the tube pass outlet 4, as shown in figure 4; the diversion trench 6 is arranged at the U-shaped gap 7 and protrudes in the direction far away from the inlet and outlet of the pipe bundle, and the diversion trench 6 is in a semi-cylindrical shape and is welded with the main partition board to form leakage-free connection; the secondary partition 3 is fixed to the tube box housing 1 and the primary partition 5. As the number of passes increases, the number of sub-passes 3 also increases.

Fig. 5 is a schematic perspective view of fig. 3.

As shown in fig. 3 and 5, when the present invention works, the fluid flows through the tube pass inlet 2 and is guided by the guiding groove 6 located at the upper part to completely enter the upper tube bundle inlet region enclosed by the main dividing partition plate 5, the sub dividing partition plate 3 and the tube box shell 1 and enter the tube bundle, and the fluid is changed into the back flow for three times in the tube bundle to flow into the lower tube bundle outlet region enclosed by the main dividing partition plate 5, the sub dividing partition plate 3 and the tube box shell 1 and completely flows out from the tube pass outlet 4 by the guiding effect of the guiding groove 6 located at the lower part.

Claims (4)

1. A flow guide system of a high-pressure heat exchanger pass box is characterized by comprising a tube box shell, a tube pass inlet, a tube pass outlet, an auxiliary pass partition plate, a main pass partition plate and a flow guide groove; the tube pass inlet and the tube pass outlet are positioned at the top and the bottom of the tube box shell, and U-shaped notches are formed in the contact positions of the upper side and the lower side of the main branch partition plate and the tube pass inlet and the tube pass outlet; the U-shaped notch is provided with a diversion trench which protrudes towards the direction far away from the inlet and outlet of the tube bundle, the longitudinal section of the diversion trench has the same shape as the U-shaped notch formed by the main partition board, and the diversion trench is welded with the main partition board to form non-leakage connection; the auxiliary pass partition plate is fixed on the channel box shell and the main pass partition plate.

2. The system of claim 1, wherein: the diversion trench is a part of a round cylinder or a square cylinder.

3. The system of claim 1, wherein: the diversion trench is composed of a semi-cylinder body and a semi-end enclosure.

4. The system of claim 1, wherein: the tube box shell consists of a cylinder and a seal head.

Images