CN214788630U

CN214788630U - Four-bin rotary air preheater guide bearing connecting device

Info

Publication number: CN214788630U
Application number: CN202120734825.1U
Authority: CN
Inventors: 温敏杰; 李刚; 刘献峰
Original assignee: Shanxi Jingneng Lvlin Electric Power Co ltd; Beijing Jingneng Power Co Ltd
Current assignee: Shanxi Jingneng Lvlin Electric Power Co ltd; Beijing Jingneng Power Co Ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-19
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a quartering storehouse rotation air heater direction bearing connecting device, including the air heater upper shaft, upper shaft sleeve and bearing frame, the upper shaft sleeve top is provided with the axle sleeve clamp plate, through clamp plate bolt fixed connection between axle sleeve clamp plate and the air heater upper shaft, be provided with the dress keyway near its top on the outer wall of air heater upper shaft, match dress keyway fixedly connected with connecting key on the upper shaft sleeve inner wall, connecting key gomphosis is to in the dress keyway, and be provided with gasket and stopping mechanism between clamp plate bolt and the axle sleeve clamp plate, can prevent like this that clamp plate bolt is not hard up, fracture, avoid wearing and tearing between upper shaft sleeve and the air heater upper shaft, air heater's safe operation has been guaranteed, thermal generator group boiler main auxiliary machinery equipment fail safe nature improves.

Description

Four-bin rotary air preheater guide bearing connecting device

Technical Field

The utility model relates to a thermal power factory trisection storehouse, four divisions of storehouse rotary air heater system technical field, specific four divisions of storehouse rotary air heater guide bearing connecting device that says so.

Background

The four-bin rotary air preheater is a regenerative heat exchanger operating in a countercurrent mode, and metal heat storage elements are manufactured into special corrugated plate types and are closely placed in a rotor module bin grid, a rotor generally rotates at the rotating speed of about 0.98 r/min, and heat energy is absorbed and conducted through the heat storage elements to realize heat exchange between flue gas and air. The heat exchanger not only is a main part of a boiler of a thermal power plant, but also is an ideal heat exchanger for saving energy and improving efficiency in chemical and metallurgical processes. In recent years, the situation that bolts of pressing plates are broken frequently occurs on guide bearings of four-bin rotary air preheaters of thermal power plants, serious threats are caused to safe and stable operation of equipment, even the preheaters are stuck and stopped, a boiler unit is stopped, and safe operation and economic benefits of the boiler unit are influenced.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned weak point that exists among the prior art, the utility model aims at providing a four minutes storehouse rotation air heater guide bearing connecting device who guarantees air heater safe operation, improves thermal generator set boiler main auxiliary machinery equipment fail safe nature.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides a four rotary air heater direction bearing connecting device in storehouse, includes air heater upper shaft, upper shaft cover and bearing frame, go up the axle sleeve with the air heater upper shaft cup joints and is connected, go up the axle sleeve with rotate between the bearing frame and be connected, it is provided with the axle sleeve clamp plate to go up the axle sleeve top, the axle sleeve clamp plate with pass through clamp plate bolt fixed connection between the air heater upper shaft, be close to its top on the outer wall of air heater upper shaft and be provided with dress keyway, match on the upper shaft cover inner wall dress keyway fixedly connected with connecting key, the air heater upper shaft cup joints when going up the axle sleeve inside, connecting key gomphosis extremely in the dress keyway.

A gasket is arranged between the pressing plate bolt and the shaft sleeve pressing plate, and a retaining mechanism is arranged between the pressing plate bolt and the shaft sleeve pressing plate.

The stopping mechanism comprises a limiting ball, a shifting block and moving grooves, and at least two groups of moving grooves are arranged on the shaft sleeve pressing plate close to the pressing plate bolt;

the motion groove comprises a transverse motion groove and a toggle motion groove communicated with the transverse motion groove, the toggle motion groove penetrates through the top surface of the shaft sleeve pressing plate, and the toggle block is connected in the motion groove in a sliding manner;

the poking block comprises a moving block and a pulling block fixedly connected with the moving block, the moving block is slidably connected in the transverse moving groove, the pulling block penetrates out of the poking moving groove, a spring is fixedly connected between the pulling block and the poking moving groove, and one end, close to the pressing plate bolt, of the moving block is fixedly connected with the limiting ball;

the outer wall of the pressure plate bolt is matched with each group of limiting balls and is provided with a limiting groove, and when the nut of the pressure plate bolt is contacted with the gasket, the limiting balls are embedded into the limiting grooves.

The inner walls of two corresponding sides of the transverse moving groove are provided with sliding grooves, the moving block is provided with sliding strips corresponding to each group, and the sliding strips are connected in the sliding grooves in a sliding mode.

The size of the connecting key is 32X 18X 140 mm.

The utility model has the advantages that:

1. the utility model provides a four rotary air heater guide bearing connecting device in storehouse that divide, it processes the dress keyway on the air heater upper shaft, the installation connecting key that matches on the upper shaft cover, the key size is 32X 18X 140mm, connecting key gomphosis to in the dress keyway, the clamp plate bolt that the installation through newly-increased connecting key will be improved effectively that the air heater exists the deviation because of guide bearing clamp plate bolt pretightning force and center cylinder straightness and breaks loose, wear and tear between upper shaft cover and the air heater upper shaft, the safe operation of air heater has been guaranteed, improve thermal generator set boiler main auxiliary machinery equipment fail safe nature;

2. the utility model provides a four divide storehouse rotary air heater guide bearing connecting device, it is provided with stopping mechanism between clamp plate bolt and axle sleeve clamp plate, after clamp plate bolt is connected between axle sleeve clamp plate and the air heater upper shaft, make the spacing inslot that promotes spacing ball gomphosis to clamp plate bolt through the elasticity of spring, thereby carry on spacingly to clamp plate bolt, prevent that it is not hard up to withdraw from, cause not hard up between axle sleeve clamp plate and the air heater, make wearing and tearing between upper shaft sleeve and the air heater upper shaft, further improve the main auxiliary machinery equipment fail safe nature of thermal generator group boiler.

Drawings

FIG. 1 is a schematic view of the connecting key mounting structure of the present invention;

fig. 2 is a schematic structural view of the middle stopping mechanism of the present invention.

In the figure: the device comprises an air preheater upper shaft 1, an upper shaft sleeve 2, a bearing seat 3, a shaft sleeve pressing plate 4, a pressing plate bolt 5, a connecting key 6, a gasket 7, a limiting ball 8, a poking block 9, a motion groove 10, a transverse motion groove 11, a poking motion groove 12, a motion block 13, a pulling block 14, a sliding groove 15, a sliding strip 16 and a spring 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a four-bin rotary air preheater guide bearing connection device comprises an air preheater upper shaft 1, an upper shaft sleeve 2 and a bearing seat 3, wherein the upper shaft sleeve 2 is connected with the air preheater upper shaft 1 in a sleeved mode, the upper shaft sleeve 2 is rotatably connected with the bearing seat 3, a shaft sleeve pressing plate 4 is arranged at the top of the upper shaft sleeve 2, the shaft sleeve pressing plate 4 is fixedly connected with the air preheater upper shaft 1 through a pressing plate bolt 5, a key installing groove is formed in the outer wall of the air preheater upper shaft 1, close to the top end of the air preheater upper shaft 1, a connecting key 6 is fixedly connected to the inner wall of the upper shaft sleeve 2 in a matched mode, the connecting key 6 is 32 x 18 x 140mm in size, when the air preheater upper shaft 1 is connected with the inside of the upper shaft sleeve 2 in a sleeved mode, the connecting key 6 is embedded into the key installing mode, and accordingly loosening and breakage of the pressing plate bolt 5, caused by deviation of pretightening force of the air preheater due to the guide bearing pressing plate bolt 5 and perpendicularity of a center barrel, of the air preheater are effectively improved through installation of the newly added connecting key 6, The upper shaft sleeve 2 and the upper shaft 1 of the air preheater are abraded, so that the safe operation of the air preheater is ensured, and the safety and reliability of main auxiliary equipment of the boiler of the thermal generator set are improved.

Referring to fig. 2, the present invention is more optimized, a gasket 7 is disposed between a pressing plate bolt 5 and a shaft sleeve pressing plate 4, a stopping mechanism is disposed between the pressing plate bolt 5 and the shaft sleeve pressing plate 4, the stopping mechanism includes a limiting ball 8, a shifting block 9 and a moving groove 10, at least two sets of moving grooves 10 are disposed on the shaft sleeve pressing plate 4 near the pressing plate bolt 5, the moving grooves 10 include a transverse moving groove 11 and a shifting moving groove 12 communicated with the transverse moving groove 11, the shifting moving groove 12 penetrates through the top surface of the shaft sleeve pressing plate 4, the shifting block 9 is slidably connected inside the moving groove 10, the shifting block 9 includes a moving block 13 and a pulling block 14 fixedly connected with the moving block 13, the moving block 13 is slidably connected inside the transverse moving groove 11, specifically, sliding grooves 15 are disposed on the inner walls of both sides corresponding to the transverse moving groove 11, sliding strips 16 are disposed on the moving block 13 corresponding to each set of sliding grooves 15, the slide bar 16 is connected in the sliding groove 15 in a sliding manner, the pulling block 14 penetrates through the toggle motion groove 12, the spring 17 is fixedly connected between the pulling block 14 and the toggle motion groove 12, one end of the motion block 13 close to the pressure plate bolt 5 is fixedly connected with the limiting ball 8, the limiting ball 8 can be pushed to move towards the direction close to the pressure plate bolt 5 through the elastic force of the spring 17, the limiting ball 8 can move towards the direction far away from the pressure plate bolt 5 through toggling the pulling block 14, the limiting grooves are formed in the outer wall of the pressure plate bolt 5 by matching with each group of limiting balls 8, when the nut of the pressure plate bolt 5 is contacted with the gasket 7, namely the pressure plate bolt 5 is screwed in place, the limiting ball 8 is embedded into the limiting grooves, after the limiting ball 8 is embedded into the limiting grooves, the pressure plate bolt 5 can be limited, the loosening and withdrawing of the pressure plate 4 and the air preheater are prevented, the looseness between the pressure plate 4 and the air preheater is caused, and the abrasion between the upper shaft sleeve 2 and the air preheater 1 is caused, the safety and reliability of the main auxiliary equipment of the boiler of the thermal generator set are further improved.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a four rotary air heater direction bearing connecting device in storehouse, includes air heater upper shaft (1), upper shaft sleeve (2) and bearing frame (3), go up shaft sleeve (2) with air heater upper shaft (1) cup joints and is connected, go up shaft sleeve (2) with rotate between bearing frame (3) and be connected, it is provided with axle sleeve clamp plate (4) to go up axle sleeve (2) top, axle sleeve clamp plate (4) with pass through clamp plate bolt (5) fixed connection, its characterized in that between air heater upper shaft (1): the air preheater is characterized in that a key installing groove is formed in the outer wall of the upper shaft (1) of the air preheater, close to the top end of the upper shaft, a connecting key (6) fixedly connected with the key installing groove is matched with the inner wall of the upper shaft sleeve (2), and when the upper shaft sleeve (2) is sleeved with the upper shaft sleeve (1), the connecting key (6) is embedded into the key installing groove.

2. The four-bin rotary air preheater guide bearing connection device of claim 1, wherein: a gasket (7) is arranged between the pressing plate bolt (5) and the shaft sleeve pressing plate (4), and a retaining mechanism is arranged between the pressing plate bolt (5) and the shaft sleeve pressing plate (4).

3. The four-bin rotary air preheater guide bearing connection device of claim 2, wherein: the stopping mechanism comprises a limiting ball (8), a shifting block (9) and moving grooves (10), and at least two groups of moving grooves (10) are arranged on the shaft sleeve pressing plate (4) close to the pressing plate bolt (5);

the moving groove (10) comprises a transverse moving groove (11) and a toggle moving groove (12) communicated with the transverse moving groove (11), the toggle moving groove (12) penetrates through the top surface of the shaft sleeve pressing plate (4), and the toggle block (9) is connected in the moving groove (10) in a sliding manner;

the toggle block (9) comprises a motion block (13) and a pull block (14) fixedly connected with the motion block (13), the motion block (13) is slidably connected in the transverse motion groove (11), the pull block (14) penetrates out of the toggle motion groove (12), a spring (17) is fixedly connected between the pull block (14) and the toggle motion groove (12), and one end, close to the pressure plate bolt (5), of the motion block (13) is fixedly connected with the limiting ball (8);

the outer wall of the pressure plate bolt (5) is matched with each group, the limiting balls (8) are provided with limiting grooves, and when the nut of the pressure plate bolt (5) is contacted with the gasket (7), the limiting balls (8) are embedded into the limiting grooves.

4. The four-bin rotary air preheater guide bearing connection device of claim 3, wherein: sliding grooves (15) are formed in the inner walls of two corresponding sides of the transverse moving groove (11), sliding strips (16) are arranged on the moving block (13) corresponding to each group of the sliding grooves (15), and the sliding strips (16) are connected in the sliding grooves (15) in a sliding mode.

5. The four-bin rotary air preheater guide bearing connection device of claim 1, wherein: the connecting key (6) is 32 x 18 x 140mm in size.