CN201181182Y

CN201181182Y - Transmission cover band connection device of swinging heat exchanger

Info

Publication number: CN201181182Y
Application number: CNU2008200555999U
Authority: CN
Inventors: 张建国; 张渐明; 蔡明坤
Original assignee: Shanghai Boiler Works Co Ltd
Current assignee: Shanghai Boiler Works Co Ltd
Priority date: 2008-02-21
Filing date: 2008-02-21
Publication date: 2009-01-14
Anticipated expiration: 2018-02-21
Also published as: WO2009103195A1

Abstract

The utility model relates to a transmission shrouding connection device of a rotary heat exchanger, which comprises a rotor housing plate, pins, and a shrouding flat steel, wherein the pins and the shrouding flat steel form the shrouding; and the shrouding is arranged outside the rotor housing plate. The transmission shrouding connection device is characterized in that two pins at the end of the shrouding nodes penetrate the shrouding flat steel at both ends; and connection chain plates with two holes are respectively arranged on the two pins at the end of the shrouding nodes. The transmission shrouding connection device has the advantages of effectively improved installation speed, improved shrouding installation accuracy, accurate pitch of the pins at the connection joint of the shrouding nodes, no vertical displacement and distortion of the shrouding nodes at the connection joint, convenient adjustment of the roundness of the shrouding, and no need of gauge for measuring the pitch of the pins. The transmission shrouding connection device can achieve smooth and stable operation of equipment and less vibration, remarkably reduce the noise, and improve the entire service life of the transmission equipment.

Description

A kind of transmission shroud jockey of rotary type heat exchanger

Technical field

The utility model relates to a kind of transmission shroud jockey of rotary type heat exchanger, belongs to rotary type heat exchanger equipment design field.

Background technology

The rotor of rotary type heat exchanger is the core component of this equipment.It mainly acts on is to absorb the used heat that the boiler leading portion is discharged, come heating boiler burning and coal dust to carry air, or heat the desulphurization system cooled smoke again, the weight of rotor is 100～1000 tons, 6～20 meters of diameters, 1～2 rev/min of rotating speed, during operation since up and down the temperature difference and also thermal deformation can appear, its thermal inertia is very big, does not allow to occur stall phenomenon in service.The shroud that the similar chain of a circle is set is adopted in its transmission more on rotor case, drive by the travelling gear that is fixed on the transmission speed reducer below on preheater or the flue gas heat exchange device shell, shroud circle integral diameter is huge, can not whole processing dispatch from the factory, be divided into 10～30 joints during manufacturing, in erecting bed assembly unit moulding.Shroud joint structure comprises band steel and gear pin up and down, its basic mentality of designing and chain design thinking are similar, shroud structure as shown in Figure 2, by rotor radial dividing plate 1, fixed block 2, rotor coverboard 3, shroud bearing pin 4 and shroud band steel 5 are formed, shroud bearing pin 4 and shroud band steel 5 are formed shroud, shroud is fixed on outside the rotor coverboard 3 by rotor radial dividing plate 1, shroud joint end links to each other with two fixed blocks 2, at present shroud is at the scene during assembly unit, employing is welded to connect, shroud joint end links to each other with two blocks of attachment straps, and two bearing pin spacings of junction are controlled with bearing pin pitch gauge, and welding is fixing at last.

Above-mentioned connected mode is because there is following point in the field condition restriction:

(1) big because of diameter, rotor is moving for artificial disc when mounted, the rotation week age is long, shroud transfer fully the circle need rotary rotor a few, be difficult to accomplish really to adjust to shroud joint and the gap between the joint even and the whole circularity of shroud qualified, because shroud joint is weldingly connected, less demanding to shroud joint upper-lower position, occur shroud joint junction easily and have upper-lower position not regulate just to put in place the phenomenon of welding hurriedly;

(2) the shroud internode is apart from wayward, causing the shroud internode is that the welded seam contraction distortion that attachment strap and shroud save directly causes the bearing pin position of junction to be moved apart from uppity basic reason, though with the control of bearing pin pitch gauge, be subjected to displacement after the welding before installing, cause that all that has been achieved is spoiled;

(3) welding deformation is big to the shroud pin pitch influence of shroud joint junction, causes bigger pitch variation, causes that the phenomenon of doing over again is more;

(4) welding deformation causes shroud to lose the circularity precision, but it is big to remove the weld seam workload of doing over again, the adjustment of can not doing over again again of general installation company.

These deficiencies cause the shroud installation quality generally not high, and during the preheater operation, shroud pin and gear wear are big, and noise is also big, and equipment life is also influenced, and there is the periodic oscillations phenomenon in transmission power.

Summary of the invention

The purpose of this utility model provides a kind of transmission shroud jockey that improves the inconsistent phenomenon up and down of installation rate, elimination shroud joint junction and reduce the rotary type heat exchanger of welding deformation influence.

For realizing above purpose, the technical solution of the utility model provides a kind of transmission shroud jockey of rotary type heat exchanger, comprise rotor coverboard, bearing pin, shroud band steel, bearing pin and shroud band steel are formed shroud, shroud is located at outside the rotor coverboard, it is characterized in that two pin two ends of shroud joint end pass the shroud band steel, the connection carrier bar that has two holes is located at respectively on two pins of shroud joint end.

The utility model will connect carrier bar and extend to two end pins axis holes of covering shroud joint, and get out two holes that equate with the bearing pin pitch connecting to join on the carrier bar, two pins that shroud saved the end change long connecting pin into, two holes that connect on the carrier bar are contained in two end bearing pins, the shroud joint connects and does not need direct welding like this, the processing of attachment strap pitch-row workshop meets the pitch requirement fully, and two blocks of attachment straps use simultaneously up and down, dislocation up and down and distortion that the shroud that links to each other saves are eliminated, and do not need to come the control connection precision with bearing pin pitch gauge again.After the installation first lap was finished, shroud had all connected appropriate at the relaxed state that does not weld, and work is simplified greatly.The installer can concentrate one's energy to carry out the accent sired results work of shroud like this, reaches designing requirement easily; After shroud is transferred circle, connect the welding of carrier bar and shroud joint and rotor, because the effect of having strong market potential, welding deformation is very small to the Influence of Displacement of shroud bearing pin, each shroud joint connecting place adopts same welding position order can make the shroud joint synchronously inwardly or outwards distortion, can be eliminated to the influence of the whole circularity of shroud.

The utility model has the advantages that:

(1) improves installation rate;

(2) eliminate the inconsistent phenomenon up and down that shroud saves the junction;

(3) cancellation pitch gauge;

(4) reduce the welding deformation influence.

Description of drawings

Fig. 1 is a kind of former rotor shroud structure schematic diagram;

Fig. 2 is a kind of transmission shroud jockey structural representation of rotary type heat exchanger.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment

As shown in Figure 1, transmission shroud jockey structural representation for a kind of rotary type heat exchanger, a kind of transmission shroud jockey of rotary type heat exchanger is by rotor coverboard 3, bearing pin 4, shroud band steel 5 be connected carrier bar 6 and form, bearing pin 4 and shroud band steel 5 are formed shroud, shroud is installed in outside the rotor coverboard 3, two pins, 7 lengthenings of shroud joint end, two ends pass shroud band steel 5, two holes that connect carrier bar 6 are enclosed within respectively on two pins 7 of shroud joint end, connect bearing pin 7 split pin is set, be easy for installation and removal, adjusting shroud circularity be installed adopt dial gauge to get final product, rotor rotation adjustment two to three circles can reach satisfied shroud circularity precision.When on-the-spot welding shroud joint and rotor coverboard, notice that the everywhere need guarantee that shroud saves whole circularity and not influenced by welding deformation by same welding in proper order, the equipment of the manufacturing smoothness that operates steadily is vibrated very for a short time, and noise obviously alleviates, and has obtained desirable effect.

Claims

1. the transmission shroud jockey of a rotary type heat exchanger, comprise rotor coverboard (3), bearing pin (4), shroud band steel (5), bearing pin (4) and shroud band steel (5) are formed shroud, shroud is located at outside the rotor coverboard (3), it is characterized in that, two pins (7) two ends of shroud joint end pass shroud band steel (5), and the connection carrier bar (6) that has two holes is located at respectively on two pins (7) of shroud joint end.