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Bidirectional adjustable hole shrinkage device for coal-fired unit

A technology of coal-fired units and shrinkage cavity, which is applied in the direction of conveyors, transportation and packaging, and conveying bulk materials. Service life and the effect of avoiding gap leakage

Pending Publication Date: 2022-04-01
华能洛阳热电有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the sealing structure of the adjustable shrinkage cavity is too simple, it is easy to cause the coal powder in the pipe to leak out through the gap between the inserting plate and the valve body during the process of inserting the inserting plate.
However, there is a hidden danger of leakage in the setting of the shrinkage cavity device in the prior art. Since there is a certain gap between the shrinkage cavity plate and the through hole, and the movement of the plate is not stable and straight, it is easy to have a slight deviation, which leads to the increase of the gap, thus from the edge Increased leakage at the gap, unsafe and reliable to use

Method used

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  • Bidirectional adjustable hole shrinkage device for coal-fired unit
  • Bidirectional adjustable hole shrinkage device for coal-fired unit
  • Bidirectional adjustable hole shrinkage device for coal-fired unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to Figure 1 to Figure 6 , which is the first embodiment of the present invention, provides a two-way adjustable shrinkage device for coal-fired units, this device includes a valve body 100, including a box body 101, and an upper mounting plate 102 and an upper mounting plate 102 are horizontally arranged inside the box body 101 The lower mounting plate 103, the upper mounting plate 102 and the lower mounting plate 103 divide the interior of the box body 101 into an upper cavity 101a, a hollow cavity 101b and a lower cavity 101c; the adjustment assembly 200 is symmetrically arranged in the hollow cavity 101b, including shrinkage holes The plate 201 and the screw rod 202, the outer middle part of the shrinkage cavity plate 201 is provided with a connecting seat 203, and one end of the screw rod 202 is fixedly connected with the connecting seat 203; On the upper surface of the lower mounting plate 103 , a first sliding block 302 is installed on the first sliding rai...

Embodiment 2

[0035] refer to Figure 1 to Figure 6 , is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the outer side of the screw rod 202 is covered with a shaft sleeve 204, and the shaft sleeve 204 is fixedly connected with the outer side of the box body 101, and the screw rod 202 A handwheel 205 is provided at the end far away from the connecting seat 203 . The motion assembly 300 also includes a second slide rail 304 and a second slide block 305, the second slide block 305 slides on the second slide rail 304, the left and right sides of the second slide rail 304 are fixedly connected with the inner wall of the box body 101, and the second The slider 305 is fixedly connected to the top end of the shrinkage hole plate 201 through the second connecting rod 306 .

[0036] Compared with Embodiment 1, further, a rack 307 is arranged above the second slider 305, and the rack 307 and the second slider 305 are fixedly connect...

Embodiment 3

[0041] refer to Figure 1 to Figure 6 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: there are multiple groups of shock absorbers 101a-1 arranged in the upper cavity 101a, and the shock absorbers 101a-1 include springs 101a-1a and the base 101a-1b, the lower end of the spring 101a-1a is fixedly connected with the upper end of the base 101a-1b, the upper end of the spring 101a-1a is fixedly connected with the upper inner wall of the box body 101, and the lower end of the base 101a-1b is connected with the upper mounting plate 102 The upper surface is fixedly connected. There are multiple groups of shock absorbing springs 101c-1 arranged in the lower cavity 101c, the lower ends of the multiple groups of shock absorbing springs 101c-1 are fixedly connected with the lower inner wall of the box body 101, and the upper ends of the multiple groups of shock absorbing springs 101c-1 are connected to the bottom ...

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Abstract

The bidirectional adjustable hole shrinkage device comprises a valve body, an adjusting assembly and a moving assembly, the valve body comprises a box body, an upper mounting plate and a lower mounting plate are horizontally arranged in the box body, and the interior of the box body is divided into an upper cavity, a middle cavity and a lower cavity by the upper mounting plate and the lower mounting plate; the adjusting assemblies are arranged in the hollow cavity in a bilateral symmetry mode and comprise shrinkage hole plates and lead screws. By arranging the lead screw and the hand wheel, the positions of the hole shrinkage plates are adjusted, so that the hole shrinkage purpose is achieved, and by arranging the gear and the rack, the two hole shrinkage plates can synchronously advance or retreat; by arranging the sliding rail and the sliding rail, the shrinkage cavity plate can move stably, and the shrinkage cavity plate cannot deviate in the moving process; the damping piece and the damping spring in the box body improve the overall stability of the device, and the service life can be effectively prolonged; the sealing layer enables the shrinkage cavity plate and the pipeline through hole to be tighter, and the situation that due to edge leakage, pulverized coal in the pipeline leaks through a gap is avoided.

Description

technical field [0001] The invention relates to the technical field of coal-fired units for thermal power generation, in particular to a two-way adjustable shrinkage cavity device for coal-fired units. Background technique [0002] In recent years, most of the primary air ducts in coal-fired units in thermal power plants adopt double-core adjustable shrinkage holes. The shrinkage cavity plate moves to the through hole of the pipeline, so as to achieve the purpose of shrinkage cavity. Because the sealing structure of the adjustable shrinkage cavity is too simple, it is easy to cause the pulverized coal in the pipe to leak out through the gap between the insert plate and the valve body during the process of inserting and inserting the insert plate. However, there is a hidden danger of leakage in the setting of the shrinkage cavity device in the prior art. Since there is a certain gap between the shrinkage cavity plate and the through hole, and the movement of the plate is not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G53/52
Inventor 颜廷学吕海威赵晓东黄文田利朋赵强瑜
Owner 华能洛阳热电有限责任公司