Gravity hinge type sealing device for air pre-heater

Abstract

The utility model belongs to the technical field of air pre-heater sealing, and particularly relates to an air pre-heater gravity hinge type sealing device which comprises an upper plate and a lower plate, the upper plate and the lower plate are rotationally connected through a rotating structure, the upper plate is fixedly installed on a rotor partition plate, and the lower plate is fixedly installed on a rotor partition plate. The lower plate is in contact with a cold-end fan-shaped plate of the air pre-heater under the action of gravity, a configuration block is welded on the lower plate, and the upper plate and the rotor partition plate are fixed through a bolt and nut fastener. In this way, a small sealing gap (theoretically zero) between the sealing piece and the cold end sector plate can be kept, impact force can be buffered through the hinge structure, safety is guaranteed, in order to enable the sealing effect to be better, balance weight devices such as a balance weight block and a balance weight strip are additionally arranged on the lower plate, the gravity effect is fully utilized, and the sealing effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to air preheater sealing technical field, concretely is a kind of air preheater gravity hinged sealing device. BACKGROUND

[0002] The cold end radial air leakage of rotary air preheater is also the main air leakage position of air preheater.The conventional cold end radial seal is made of a thin steel plate, also known as hard sealing sheet, which forms the radial seal between the cold end and the fan-shaped plate. Figure 7 As shown: directly hard sealing sheet 100 is fixed on rotor baffle 1 by bolt nut fastener 3;The disadvantage of this structure is that the rotor will expand downward when it is in hot state, and at this time, the hard sealing sheet and the fan-shaped plate will collide, which will cause the air preheater to be stuck and unable to run safely and stably, so the gap between the hard sealing sheet and the fan-shaped plate must be reserved when the air preheater is in cold state, but if the gap is too large, it will cause air leakage, and if the gap is too small, it will cause collision. SUMMARY

[0003] In view of the problems existing in the prior art, the utility model is proposed.

[0004] Therefore, the utility model aims to provide an air preheater gravity hinged sealing device, which solves the problem of the cold end radial seal structure of the existing rotary air preheater, which is caused by the expansion of the rotor when it is in hot state, and at this time, the hard sealing sheet and the fan-shaped plate will collide, which will cause the air preheater to be stuck and unable to run safely and stably, so the gap between the hard sealing sheet and the fan-shaped plate must be reserved when the air preheater is in cold state, but if the gap is too large, it will cause air leakage, and if the gap is too small, it will cause collision.

[0005] To solve the above technical problems, according to one aspect of the utility model, the utility model provides the following technical scheme:

[0006] An air preheater gravity hinged sealing device, comprising an upper plate and a lower plate, the upper plate and the lower plate are rotatably connected by a rotating structure.

[0007] As a preferred scheme of the air preheater gravity hinged sealing device, the upper plate is fixedly installed on the rotor baffle, and the lower plate is in contact with the cold end fan-shaped plate of the air preheater under the action of gravity.

[0008] As a preferred scheme of the air preheater gravity hinged sealing device, a configuration block is welded on the lower plate.

[0009] As a preferred scheme of the air preheater gravity hinge type sealing device, the upper plate and the rotor partition are fixed through the bolt and nut fastener.

[0010] As a preferred scheme of the air preheater gravity hinge type sealing device, the rotating structure is provided as a hinge or a hinge.

[0011] As a preferred scheme of the air preheater gravity hinge type sealing device, the rotating structure includes the first shaft sleeve at the bottom of the upper plate and the second shaft sleeve at the top of the lower plate, and the first shaft sleeve and the second shaft sleeve are jointly inserted with the rotating shaft.

[0012] Compared with the prior art, the air preheater gravity hinge type sealing device has the advantages that:

[0013] 1. The sealing piece utilizes the hinge type structure, has good elasticity, and does not produce wear and tear with the fan-shaped plate, and the sealing effect is long-term effective.

[0014] 2. The lower plate of the hinge type structure utilizes the principle of gravity, and the cold end fan-shaped plate can always maintain contact, maintains 0 sealing gap, and can effectively reduce the cold end radial air leakage.

[0015] 3. It has certain expansibility, is convenient to assemble and disassemble, is small and convenient, cost controllable, has stable structure, and has long service life.

[0016] 4. The gravity effect is utilized to make the lower plate and the fan-shaped plate always maintain contact, but no impact is generated, so that the sealing piece and the cold end fan-shaped plate can maintain a small sealing gap (theoretically 0), and the impact force is buffered by the hinge structure to ensure safety. In order to make the sealing effect better, the counterweight block, the counterweight strip and other counterweight devices are added to the lower plate, the gravity effect is fully utilized, and the sealing effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure schematic view is provided for the utility model.

[0018] Figure 2 The schematic view of the sealing mechanism is provided for the utility model.

[0019] Figure 3 The side view of the utility model is provided. Figure 2

[0020] Figure 4 The schematic view of the upper plate is provided for the utility model.

[0021] Figure 5 The schematic view of the lower plate is provided for the utility model.

[0022] Figure 6 The utility model is provided.​Figure 5 side view of the present application;

[0023] Figure 7 The utility model provides a schematic view of the cold end radial seal of prior rotary air preheater.

[0024] In the drawing: rotor partition 1, upper plate 2, bolt nut fastener 3, rotating shaft structure 4, configuration block 5, lower plate 6, cold end sector plate 7, hard sealing piece 100. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model more clear, the embodiment of the utility model will be further described in detail below with reference to the drawings.

[0026] The utility model provides a kind of air preheater gravity hinged seal device, please refer to Figures 1-7 Including upper plate 2 and lower plate 6, the upper plate 2 and lower plate 6 are rotatably connected by rotating structure 4.

[0027] The upper plate 2 is fixedly installed on rotor partition 1, specifically, the upper plate 2 and rotor partition 1 are fixed by bolt nut fastener 3, the lower plate 6 is contacted between the cold end sector plate 7 of air preheater under the action of gravity, configuration block 5 is welded on the lower plate 6, guarantee that lower plate 6 can contact cold end sector plate 7 under the action of gravity, sufficiently utilize gravity effect, guarantee sealing effect.

[0028] Embodiment 1: the rotating structure 4 is set to hinge or hinge, when hinge or hinge is welded between upper plate 2 and lower plate 6.

[0029] In specific use, the upper plate 2 is fixed between rotor partition 1 by bolt nut fastener 3, the lower plate 6 and sector plate 7 can always keep contact under the action of gravity of lower plate 6 and configuration block 5, but do not produce impact, so that both can maintain small sealing gap (theoretically 0) between sealing piece and cold end sector plate, and can utilize hinge structure to buffer impact force, guarantee safety.

[0030] Embodiment 2: the rotating structure 4 includes the first shaft sleeve of the bottom of the upper plate 2 and the second shaft sleeve of the top of the lower plate 6, the first shaft sleeve is welded in the bottom of the upper plate 2, the second shaft sleeve is welded in the top of the lower plate 6, and the first shaft sleeve and the second shaft sleeve are jointly inserted into the rotating shaft.

[0031] In specific use, the upper plate 2 is fixed between rotor partition 1 by bolt nut fastener 3, the lower plate 6 and sector plate 7 can always keep contact under the action of gravity of lower plate 6 and configuration block 5, but do not produce impact, so that both can maintain small sealing gap (theoretically 0) between sealing piece and cold end sector plate, and can utilize hinge structure to buffer impact force, guarantee safety.

[0032] Although the utility model has been described above with reference to the embodiments, various modifications can be made to it and equivalent components can be substituted for those therein without departing from the scope of the utility model. In particular, each of the features disclosed in the embodiments of the utility model can be used in combination with any other feature in any manner, provided that there is no structural conflict. The combinations of these features are not exhaustively described in the specification merely for the sake of brevity and resource conservation. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A gravity hinged sealing device for an air preheater, characterized in that: It includes an upper plate (2) and a lower plate (6), which are rotatably connected by a rotating structure (4).

2. The gravity hinged sealing device for an air preheater according to claim 1, characterized in that, The upper plate (2) is fixedly installed on the rotor partition (1), and the lower plate (6) is in contact with the cold end sector plate (7) of the air preheater under the action of gravity.

3. The gravity hinged sealing device for an air preheater according to claim 2, characterized in that, A configuration block (5) is welded onto the lower plate (6).

4. The gravity hinged sealing device for an air preheater according to claim 2, characterized in that, The upper plate (2) and the rotor partition (1) are fixed together by bolts and nuts (3).

5. The gravity hinged sealing device for an air preheater according to claim 1, characterized in that, The rotating structure (4) is configured as a hinge or a latch.

6. The gravity hinged sealing device for an air preheater according to claim 1, characterized in that, The rotating structure (4) includes a first bushing at the bottom of the upper plate (2) and a second bushing at the top of the lower plate (6), with the first bushing and the second bushing jointly inserted into the rotating shaft.

Images