CN205425903U - Round trip shell and tube type heat exchanger with compensation circle - Google Patents

Abstract

The utility model relates to a cold and hot fluid indirect heating equipment among the chemical industry heat transfer process, especially a round trip shell and tube type heat exchanger with compensation circle. Including baffle, tube side outlet connection, left tube sheet, casing, compensation circle, shell side entry joint, right seal head, right tube sheet, conveyer pipe, transverse baffle, shell side outlet connection, tube side entry joint, left head, the baffle place inside left head, with left head is inside divide into about two enclosure spaces, the conveyer pipe pass the cylinder hole of seting up on transverse baffle, left tube sheet and the right tube sheet, the left end mouth of pipe stretches out left tube sheet left end, the right -hand member mouth of pipe stretches out right tube sheet right -hand member, transverse baffle be connected with the casing, compensation circle welding on the casing. Beneficial effect: heat transfer area that unit volume has is great, the heat transfer effect is better, and simple structure, overcome general shell and tube type heat exchanger and differed when great when two fluidic temperature, because the thermal stress arouses equipment warp, crooked or ruptured problem even.

Description

A double-pass shell-and-tube heat exchanger with a compensation ring

technical field

The utility model relates to a cold and hot fluid heat exchange device in the heat transfer process of a chemical industry, in particular to a double-pass shell-and-tube heat exchanger with a compensation ring.

Background technique

As the main equipment for heat exchange between cold and hot fluids in the heat transfer process, heat exchangers are widely used in many fields in chemical production. The current heat exchangers are mainly divided into three types according to their heat exchange methods: one is the hybrid heat exchanger. Heater is used in occasions where cold and hot fluids can be directly mixed for heat exchange. The equipment is simple and the heat exchange effect is good, but it is limited to the situation where the two fluids are mixed with each other. The heat exchange mechanism is more complicated, and heat transfer is often accompanied by The mass transfer process; the second is the regenerative heat exchanger, which realizes heat exchange in the heat accumulator. In production, two parallel heat accumulators are usually used alternately. The structure is simple and high temperature resistant, but the equipment is bulky and cannot be avoided. The third is the partition wall heat exchanger, because most of the heat exchange between the fluids on both sides of the partition wall is encountered in chemical production, so the partition wall heat exchanger is the most widely used heat exchanger in chemical production.

The shell-and-tube heat exchanger is a typical partition heat exchanger, which has been widely used in chemical production. Because the temperature of the two fluids is different, the temperature of the shell and the delivery pipe are also different, so the thermal expansion of the shell and the delivery pipe also varies. The difference is that when the temperature difference between the two fluids is large, the equipment will be deformed, even bent or broken due to thermal stress.

Utility model content

The utility model aims to solve the above problems, and provides a double-pass shell-and-tube heat exchanger with a compensation ring, which overcomes the thermal stress caused by the general shell-and-tube heat exchanger when the temperature difference between the two fluids is large. The disadvantages of equipment deformation, even bending or cracking, the technical solutions adopted are as follows:

A double-pass shell-and-tube heat exchanger with a compensation ring, including a diaphragm, a tube-side outlet joint, a left tube plate, a shell, a compensation ring, a shell-side inlet joint, a right head, a right tube plate, a delivery pipe, Transverse baffle, shell-side outlet joint, tube-side inlet joint, and left head. The partition is placed inside the left head, dividing the inside of the left head into upper and lower closed spaces, and the right end is connected to the left tube plate. Both the tube side outlet joint and the tube side inlet joint are arranged on the left head, the shell side inlet joint and the shell side outlet joint are both arranged on the shell, and the left end of the left tube plate is close to the left head Positioning, the right end is positioned against the shell, the left end of the right tube plate is positioned against the shell, the right end is positioned against the right head, the left end of the shell is connected to the left head, the right end is connected to the right head, the conveying The tube passes through the cylindrical hole opened on the transverse baffle, the left tube plate and the right tube plate, the left end of the nozzle protrudes from the left end of the left tube plate, and the right end of the nozzle protrudes from the right end of the right tube plate, and the transverse baffle is connected to the shell , the compensation ring is welded on the housing, and elastically deforms when the thermal expansion of the housing and the delivery pipe is different, so as to adapt to the different degrees of thermal expansion of the housing and the delivery pipe.

The right head has an arc-shaped structure to reduce the impact of the fluid and the inner surface, and an annular boss for positioning the right tube sheet is provided inside the right head.

The utility model has the following advantages: the heat exchange area per unit volume is larger, the heat exchange effect is better, the structure is simple, and it overcomes the general shell-and-tube heat exchanger when the temperature difference between the two fluids is large. Deformation, even bending or cracking problems.

Description of drawings

Figure 1: A structural schematic diagram of a double-pass shell-and-tube heat exchanger with a compensation ring in the utility model;

Symbol Description:

1. Partition plate, 2. Tube side outlet joint, 3. Left tube plate, 4. Shell, 5. Compensation ring, 6. Shell side inlet joint, 7. Right head, 8. Right tube plate, 9. Conveying Tube, 10. Transverse baffle, 11. Shell side outlet joint, 12. Tube side inlet joint, 13. Left head.

detailed description

Below in conjunction with accompanying drawing and example the utility model is described further:

As shown in Figure 1, the utility model has a double-pass shell-and-tube heat exchanger with a compensation ring, including a partition (1), a tube-side outlet joint (2), a left tube plate (3), a shell (4 ), compensation ring (5), shell side inlet joint (6), right head (7), right tube sheet (8), conveying pipe (9), transverse baffle (10), shell side outlet joint (11) , the tube inlet joint (12), the left head (13), the partition (1) is placed inside the left head (13), and the inside of the left head (13) is divided into upper and lower closed spaces, The right end is connected with the left tube sheet (3), the tube side outlet joint (2) and the tube side inlet joint (12) are all arranged on the left head (13), and the shell side inlet joint (6) and The shell-side outlet joints (11) are all arranged on the shell (4), the left end of the left tube plate (3) is positioned against the left head (13), the right end is positioned against the shell (4), and the right tube plate (3) is positioned against the shell (4). The left end of the plate (8) is positioned against the shell (4), the right end is positioned against the right head (7), the left end of the shell (4) is connected to the left head (13), and the right end is connected to the right head (7) , the conveying pipe (9) passes through the cylindrical hole provided on the transverse baffle (10), the left tube plate (3) and the right tube plate (8), and the nozzle on the left end stretches out from the left end of the left tube plate (3), The nozzle at the right end protrudes from the right end of the right tube plate (8), the transverse baffle (10) is connected to the shell (4), the compensation ring (5) is welded on the shell (4), and the (4) When the thermal expansion is different from that of the delivery pipe (10), elastic deformation occurs to adapt to the different degrees of thermal expansion of the housing (4) and the delivery pipe (10).

The right head (7) has an arc-shaped structure to reduce the impact of the fluid and the inner surface. The inside of the right head (7) is provided with an annular boss for positioning the right tube sheet (8).

When the utility model is in use, the hot fluid flows into the lower space of the left head (13) from the pipe-side inlet joint (12), flows into the lower space of the right head (7) through the lower delivery pipe (9), and then passes through the upper The conveying pipe (9) flows into the upper space of the left head (13), and finally flows out through the tube-side outlet joint (2); the cold fluid flows into the inner space of the right end of the shell (4) from the shell-side inlet joint (6), and flows along the The right tube sheet (8), the transverse baffle (10), and the gap between the conveying pipe (9) flow, and then flow along the gap between the two transverse baffles (10) and the conveying pipe (9), due to the (4) There are several horizontal baffles (10) inside, so the cold fluid flows in the casing, and the number of horizontal baffles (10) can be selected according to the needs, and finally the shell at the left end of the casing (4) Outlet outlet joint (11) flows out. During this process, the hot fluid flows through the delivery pipe (9) twice, realizing the two-way flow of the tube-side fluid, and the cold fluid flows along the transverse baffle (10) in the shell (4), increasing the The heat exchange area per unit volume is improved, and the heat exchange effect is good. The compensation ring (5) is welded on the shell, and when the thermal expansion of the shell (4) and the delivery pipe (9) are different, elastic deformation occurs to adapt to the shell (4) ) and the conveying pipe (9) have different degrees of thermal expansion, thereby overcoming the problem of deformation, even bending or cracking of the equipment due to thermal stress when the temperature difference between the two fluids is large in a general shell-and-tube heat exchanger.

The utility model has been described above with examples, but the utility model is not limited to the above-mentioned specific embodiments, and any changes or modifications made based on the utility model all belong to the protection scope of the utility model.

Claims (2)

1. null1. a round trip shell-and-tube heat exchanger with compensating ring，It is characterized in that: include dividing plate (1)、Tube side outlet connection (2)、Left tube sheet (3)、Housing (4)、Compensating ring (5)、Shell side inlet joint (6)、Right end socket (7)、Right tube plate (8)、Conveying pipe (9)、Transverse baffle (10)、Shell-side outlet joint (11)、Tube-side inlet joint (12)、Left end socket (13)，It is internal that described dividing plate (1) is positioned over left end socket (13)，It is divided into upper and lower two to close space by internal for left end socket (13)，Right-hand member is connected with left tube sheet (3)，Described tube side outlet connection (2) and tube-side inlet joint (12) are arranged on left end socket (13)，Described shell side inlet joint (6) and shell-side outlet joint (11) are arranged on housing (4)，Described left tube sheet (3) left end keep left end socket (13) location，Right-hand member positions by housing (4)，Described right tube plate (8) left end positions by housing (4)，Right-hand member keep right end socket (7) location，Described housing (4) left end is connected with left end socket (13)，Right-hand member is connected with right end socket (7)，Described conveying pipe (9) passes transverse baffle (10)、The cylindrical hole offered on left tube sheet (3) and right tube plate (8)，The left end mouth of pipe stretches out left tube sheet (3) left end，The right-hand member mouth of pipe stretches out right tube plate (8) right-hand member，Described transverse baffle (10) is connected with housing (4)，Described compensating ring (5) is welded on housing (4).
2. A kind of round trip shell-and-tube heat exchanger with compensating ring the most according to claim 1, it is characterized in that: described right end socket (7) is arcuate structure, described right end socket (7) is internal is provided with one for the annular boss positioning right tube plate (8).