CN2202299Y

CN2202299Y - Heat exchanger with anti-vibration pipe bundle

Info

Publication number: CN2202299Y
Application number: CN 94220661
Authority: CN
Inventors: 胡明辅; 丁平
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-08
Filing date: 1994-09-08
Publication date: 1995-06-28
Anticipated expiration: 2004-09-08

Abstract

The utility model relates to a heat exchanger with an anti-vibration pipe bundle, belonging to the field of the heat-exchanging device. The heat exchanger is composed of a box 1, a casing 2, an anti-vibration gate 3 and a pipe bundle 4. The utility model has the advantages of simple structure, good anti-vibration performance of the pipe bundle, not easy damage, etc. The utility model can be widely used for various pipe and shell type heat exchangers and particularly used under the condition of the severer shock excitation.

Description

Heat exchanger with anti-vibration pipe bundle

The utility model relates to a kind of anti-tube bundle vibration heat exchanger, belongs to the heat-exchange device field.

It is the one of the main reasons of shell-and-tube heat exchanger damage inactivation that tube bundle vibration destroys.The deflection rod heat exchanger of succeeding in developing is in recent years clamped pipe with rod baffle (round bar), has cancelled original deflection plate, shell-side fluid is vertically generally to flow, fluid greatly reduces the exciting force of pipe, thereby has anti-preferably tube bundle vibration effect, but still has following shortcoming:

1, the rod baffle of deflection rod heat exchanger adopts round bar, and round bar is " point " contact with contacting of pipe, thus rod baffle to the inhibitory action of tube vibration a little less than, and easily formation to the wearing and tearing of pipe.Particularly in the import and export zone of heat exchanger shell pass, fluid cross is impacted pipe, and pipe is had stronger exciting effect, so deflection rod heat exchanger still can be imported and exported the zone at shell side flutter failure takes place;

2, deflection rod heat exchanger makes the size of shell-side fluid flow velocity can only lean on the size of diameter of the housing to regulate, so its applicability is subjected to bigger restriction owing to the deflection plate that has replaced traditional heat exchangers with deflecting fence.

The purpose of this utility model is to overcome the deficiency of prior art, and provides a kind of resistance to shock good and practical anti-tube bundle vibration heat exchanger.

The technical solution of the utility model is such: as shown in Figure 1, install additional 4 of former heat exchanger tubes and to be no less than one group of (4) antivibration grid 3(as shown in Figure 4), antivibration grid 3 are by supporting circle 6 and support strip 5 to form, support strip 5 is the band steel shape, its thickness is the gap between adjacent heat exchange tubes, and the support strip 5 on every group of antivibration grid 3 is interlocked, alternated between tube bank 4 (as Fig. 2, shown in Figure 3).Owing to do not have the gap between the heat exchanger tube of support strip 5 and tube bank 4, being supported bar 5 around the heat exchanger tube tightly clamps, and because support strip 5 is the band steel shape, contact for " line " with heat exchanger tube, so can not change under the mobile situation of fluid, suppress the vibration of tube bank 4 effectively, and be difficult for constituting wearing and tearing restraining 4.

The utility model is described in further detail below in conjunction with the accompanying drawing illustrated embodiment:

Fig. 1 is the utility model structural representation;

Fig. 2 is I-I enlarged drawing of Fig. 1;

Fig. 3 is the vertical view of Fig. 2.

Fig. 4 is the utility model antivibration grid schematic diagrames.

As shown in Figure 1, this embodiment is made up of bobbin carriage 1, the housing 2 of band guide shell, the tube bank 4 of known rod baffle floating head and antivibration grid 3, and the heat exchanger tube diameter of tube bank 4 is 25mm, and tube pitch is 32mm, and the gap is 7mm between pipe.3 every groups four of antivibration grid have 2 groups, place the import and export zone of shell-side fluid respectively.Antivibration grid 3(is as shown in Figure 4) by supporting circle 6 and support strip 5 to form, support to be drilled with 6 locating holes 7 on the circle 6.Support strip 5 is the band steel of 7 * 20mm, and joint welding is in supporting that support strip 5 mutual spacings are 64mm on the circle 6.Support strip 5 on every group of antivibration grid 3 is crisscross each other and alternate between heat exchanger tube (as Fig. 2, shown in Figure 3), promptly every heat exchanger tube around by 5 supportings of the support strip on the antivibration grid 3.Because the thickness of support strip 5 equates (being 7mm) with gap between the heat exchanger tube, heat exchanger tube promptly is supported bar 5 and tightly clamps, and support strip 5 realized that with heat exchanger tube " line " contacts, and has suppressed preferably to restrain 4 vibration, has avoided restraining 4 destruction.

The utility model compared with prior art has simple in structurely, and the tube bank shock resistance is good, and the advantage such as not fragile can be widely used in all types of shell-and-tube heat exchangers, is specially adapted to use under the harsh exciting condition.

Claims

1, a kind of anti-tube bundle vibration heat exchanger is made up of bobbin carriage (1), housing (2) and tube bank (4), it is characterized in that being provided with between tube bank (4) be used to suppress tube vibration by supporting to enclose the antivibration grid (3) that (6) and support strip (5) are formed; Support strip (5) on the antivibration grid (3) is the band steel shape.