CN2225010Y - Spiral band-winding sleeve for transferring heat - Google Patents

Abstract

A multi-wave spiral-wound belt-type heat transfer jacket, in which the multi-wave belts are misplaced and spirally wound on the outer wall of the cylinder according to various requirements to form a fluid channel, and the adjacent waves in the belt are connected to the cylinder wall by plug welding. Butt welding is used to connect the two turns of multi-wave belts with the wall of the cylinder. The opposite ends of the same turn are self-butted, and the dislocation wave is added with a transition joint. Two waves or more than two waves are dislocated, and a connection box is added at the first and last dislocation wave. The utility model increases the flow rate within the allowable range of the delivery pump, obtains a higher heat transfer coefficient, reduces the welding workload, improves the strength and reliability of the welding, facilitates the production of the general-purpose multi-wave zone, and reduces the manufacturing cost. Therefore, It is especially suitable for use in the cooling jackets of large fermenters.

Description

Multi-wave spiral wound belt heat transfer jacket

The utility model relates to a device for heat exchange or heat transfer equipment.

In the brewing, biochemical, and pharmaceutical industries, the fermentation process is often carried out in large fermenters. The process is characterized by large material volume and low reaction pressure. In order to remove the heat in the tank in time, control the appropriate temperature of the material, and make the temperature distribution uniform, a cooling jacket is often installed on a certain part outside the tank wall. In the field of background technology, there are many types of cooling jackets, which are commonly used The most popular are: semicircular tube type (semicircular tube welded outside the tank wall); small semicircular tube type (pipe wall with an arc of about 130°) and spiral plate honeycomb point type. Under the same cooling medium flow rate, the heat transfer coefficient of the semicircular tube type is low and the weld seam is long; the fluid resistance of the small semicircular tube type is large and the weld seam is long; the heat transfer coefficient of the spiral plate honeycomb point type is low and the stress at the honeycomb point is high , The quality of plug welding is difficult to guarantee. Moreover, the above-mentioned various jackets can only work within a narrow range of process parameters, and it is difficult to adapt to the needs of different process characteristics, and it is also difficult to organize standardized manufacturing and production.

The purpose of this utility model is to provide a heat transfer jacket with a multi-wave zone structure and various dislocation spiral winding modes, so as to overcome the problems in the background technical field.

In order to achieve the above purpose, the technical solution adopted by the utility model is: it includes a cylinder body and a winding belt wound on the cylinder body. The multi-wave belt is spirally wound on the outer wall of the cylinder with a wave of dislocation to form a fluid channel. The plug welding point is connected to the wall between two adjacent waves in the belt, and the butt weld is used between two adjacent turns of the multi-wave belt. The cylinder wall is connected, the alignment waves at both ends of the same turn are self-joined by welds, and the transition joints are added at the dislocation waves to make the butt welds of each turn stagger, and the first and last dislocation waves are the inlet and outlet of the fluid respectively.

Compared with the background technology, the utility model has the beneficial effects that:

1. The multi-wave zone can form a fluid channel according to the required wave number, increase the flow rate within the range allowed by the delivery pump, and obtain a higher heat transfer coefficient, which can replace the cooling coil in the traditional fermentation tank;

2. It can organize the manufacturing and production of general-purpose multi-wave bands to reduce manufacturing costs;

3. The design of the waveform can take into account the heat transfer performance and strength;

4. The connection between the multi-wave zone and the cylinder avoids single-sided fillet welds. The continuous rolling manufacturing method can ensure a good fit between the plug welding spot and the cylinder wall, making it easy to weld and have better The stressed state, thereby improving the strength and reliability of the welded connection;

5. Butt welding is used between two turns of multi-wave belts, which shortens the length of the weld.

The utility model is particularly suitable for adopting wave bands of 2 to 4 waves and used in cooling jackets of large fermentation tanks.

Below in conjunction with accompanying drawing, the utility model is further described.

Figure 1. Schematic diagram of one-wave channel dislocation spiral winding method;

Figure 2. Schematic diagram of the two-wave channel dislocation spiral winding method;

Figure 3. Schematic diagram of the three-wave (full-wave) channel dislocation spiral winding method;

Figure 4. Schematic diagram of the cross section of the three wave bands.

As shown in Figure 1, the multi-turn and multi-wave belts 1, 1' are spirally wound on the outer wall of the cylinder 2 with a wave dislocation to form a fluid channel, and between two adjacent waves in the belt, as shown in Figure 4, plug Welding point 3 is connected to the cylinder wall, and the two adjacent multi-wave zones 1, 1' are connected to the cylinder wall by butt weld 4, and the alignment wave 5 at both ends of the same turn is self-joined by weld 6, and the dislocation wave 11 Add transition section 7 to stagger the butt welds 6 of each turn. The fluid flows in from the inlet 8, passes through the multi-wave zone 1 and the gap of the cylinder wall, the transition joint 7, the next multiple zone 1′ and the gap of the cylinder wall, and flows out from the outlet 9.

As shown in Figure 2, the multi-turn multi-wave belts 1, 1' are spirally wound on the outer wall of the cylinder 2 with two or more dislocations to form a fluid channel. Similarly, solder joints are used between two adjacent waves in the belt 3 is connected to the cylinder wall, and the two adjacent multi-wave zones 1 and 1′ are connected to the cylinder wall by a butt weld 4, and the alignment wave 5 at both ends of the same turn is self-joined by a weld 6, and the dislocation wave 11 is added The transition joint 7 staggers the butt welds 6 of each turn, and the connection box 10 is added to the first and last misaligned waves to be the inlet 8 and outlet 9 of the fluid respectively.

As shown in Figure 3, the multi-wave band is spirally wound on the outer wall of the cylinder 2 with three waves (full waves) in dislocation to form a fluid channel, and the two adjacent waves in the band are connected to the cylinder wall with a plug welding point 3, and the adjacent two waves The butt weld 4 is connected to the cylinder wall between the multi-turn wave zones 1 and 1', and the joint box 10 at the dislocation of the first and last ends is the inlet 8 and the outlet 9 of the fluid respectively.

As shown in Figure 4, the wave number of multi-wave zone 1 is set according to the needs. Theoretically speaking _, it should be greater than or equal to 2, generally 2 to ₄ waves. >r ₁ ≈r ₂ .

Now take the beer fermentation tank with an effective volume of ^60m3 as an example: the calculation shows that the use of double-wave belts and double-wave spiral winding can increase the heat transfer coefficient of the cooling medium side by 22% compared with the use of spiral plate honeycomb point cooling jackets. %, the total heat transfer coefficient is increased by 9%; the weld length is reduced by 30%, and the number of plug welding points is reduced by 50%; while the fluid resistance is only increased by less than one meter of water column.

Claims (4)

1. A multi-wave spiral belt-wound heat transfer jacket, which includes a cylinder and a belt wound on the cylinder, characterized in that: the multi-wave belt [1] is spirally wound on the cylinder [2] with a wave dislocation ] outer wall, forming a fluid channel, between two adjacent waves in the belt is connected with the cylinder wall by a plug welding point [3], and between two adjacent turns of multi-wave belts [1], [1′] by a butt weld [4 ] is connected with the cylinder wall, the parametric wave [5] at both ends of the same turn is self-butted by the weld [6], and the transition joint [7] is added to the dislocation wave [11] to stagger the butt weld seam [6] of each turn. The positions of the last dislocation wave are the inlet [8] and outlet [9] of the fluid respectively. 2. The multi-wave helical belt-wound heat transfer jacket according to claim 1, characterized in that: the multi-wave belt [1] is spirally wound on the outer wall of the cylinder [2] in two or more dislocations to form a fluid Channel, between two adjacent waves in the belt is connected to the cylinder wall by plug welding points [3], and between two adjacent turns of multi-wave belts [1], [1′] is connected to the cylinder wall by butt weld [4] , the alignment wave [5] at both ends of the same turn is self-joined by the weld [6], the transition joint [7] is added to the dislocation wave [11] to stagger the butt welding seam [6] of each turn, and the first and last dislocation wave is added The connection box [10] is respectively the inlet [8] and the outlet [9] of the fluid. 3. The multi-wave spiral belt-wound heat transfer jacket according to claim 1, characterized in that: the multi-wave belt [1] full-wave dislocation helically wound on the outer wall of the cylinder [2] to form a fluid channel, with the inner phase The two adjacent waves are connected to the cylinder wall by plug welding points [3], and the two adjacent multi-wave belts [1], [1′] are connected to the cylinder wall by butt welds [4]. Adding junction box [10] is the inlet [8], outlet [9] of fluid respectively. 4. The multi-wave spiral belt-wound heat transfer jacket according to claims 1 to 3, characterized in that: the wave number of the multi-wave belt [1] is set as required, generally 2 to 4 waves, and its waveform is determined by R , r ₁ , and r ₂ arcs, with a radius R＞r ₁ ≈r ₂ .

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