CN217680922U

CN217680922U - Liquid frequency modulation damper for double-layer steel chimney

Info

Publication number: CN217680922U
Application number: CN202123194588.3U
Authority: CN
Inventors: 韩召先; 王鑫; 王洪; 周加华
Original assignee: Qingdao Haoyu Heavy Industry Co ltd
Current assignee: Qingdao Haoyu Heavy Industry Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-10-28
Anticipated expiration: 2031-12-20

Abstract

The utility model belongs to the technical field of the chimney attenuator technique and specifically relates to a liquid frequency modulation attenuator is used to double-deck steel chimney, including the chimney urceolus, the circumference outer wall of chimney urceolus is equipped with annular attenuator, the attenuator comprises a plurality of sectorial baffle boxes, and each baffle box separates through the inner baffle, be equipped with damping liquid in the baffle box, it has the aperture that is used for damping liquid to pass through to open on each inner baffle. The utility model adopts the damper with a novel structure to replace a wind break ring, which consists of a plurality of cavities, a division plate is arranged between each cavity, a plurality of small holes are arranged on the division plate, damping liquid is added from a liquid filling port, and is equally divided inside each cavity through the plurality of small holes; the whole damper forms an annular box body, and the wind load coefficient is reduced compared with a wind break ring. And saves about 20% of the amount of material relative to a typical damper. After the damper is installed, maintenance is not needed; compared with the frequency modulation mass damper, the frequency modulation mass damper is maintained once in three years, and the cost performance is higher.

Description

Liquid frequency modulation damper for double-layer steel chimney

Technical Field

The utility model belongs to the technical field of the chimney attenuator, concretely relates to liquid frequency modulation attenuator for double-deck steel chimney.

Background

At present, a steel chimney in China is rarely provided with a damper; when the lateral wind load is large and the damping of the chimney is small, in order to reduce the lateral displacement of the chimney, a wind breaking ring is mostly adopted domestically; this results in a higher wind load factor and an uneconomical chimney design. In view of this, we propose a liquid frequency modulation damper for a double-layer steel chimney.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a liquid frequency modulation attenuator for double-deck steel chimney to solve the defect that proposes in the above-mentioned background art.

The utility model adopts the technical scheme as follows:

the liquid frequency modulation damper for the double-layer steel chimney comprises a chimney outer barrel, wherein an annular damper is arranged on the circumferential outer wall of the chimney outer barrel and consists of a plurality of fan-shaped separation boxes, each separation box is separated by an inner partition plate, damping liquid is arranged in each separation box, and a small hole for the damping liquid to pass through is formed in each inner partition plate.

As an optimal technical solution of the utility model: the top of the damper is sealed by a top plate stiffener.

As an optimal technical solution of the utility model: and a filling port for filling damping liquid is formed in the top plate reinforcing plate of one of the separation boxes.

As an optimal technical solution of the utility model: the annular damper is in an incomplete annular shape, two ends of the damper are sealed through end plates, and a chimney vertical ladder used for climbing up a chimney is arranged between the end plates at the two ends.

As a preferred technical solution of the utility model: the damper is connected with the chimney outer barrel through a box body connecting plate, the bottom of the damper is supported and supported through the damper, and the damper is supported and fixed on the chimney outer barrel.

The utility model adopts the damper with a novel structure to replace a wind break ring, which consists of a plurality of cavities, a division plate is arranged between each cavity, a plurality of small holes are arranged on the division plate, damping liquid is added from a liquid filling port, and is equally divided inside each cavity through the plurality of small holes; the whole damper forms an annular box body, and a top plate of the damper is reinforced by a reinforcing plate and can be used as a platform; the damper is supported through the bottom and is arranged outside the chimney outer barrel. Not only reduces the wind load coefficient compared with the wind breaking ring. And saves about 20% of the amount of material relative to a typical damper. And after the damper is installed, maintenance is not needed; compared with the frequency modulation mass damper, the frequency modulation mass damper is maintained once in three years, and the cost performance is higher.

Drawings

FIG. 1 is a plan view of a liquid frequency-modulation damper for a double-layer steel chimney according to a preferred embodiment of the present invention;

fig. 2 is a front view of the liquid frequency modulation damper for the double-layer steel chimney according to the preferred embodiment of the present invention.

In the figure: 1. a separate tank; 2. a box body connecting plate; 3. a top plate reinforcement plate; 4. a chimney vertical ladder; 5. an inner partition plate; 6. a liquid filling port; 7. a chimney outer cylinder; 8. an end plate; 9. and the damper supports.

Detailed Description

It should be noted that, in the present embodiment, features of the embodiment and the embodiment can be combined with each other without conflict, and the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-2, the preferred embodiment of the present invention provides a liquid frequency modulation damper for a double-layer steel chimney, which comprises a chimney outer cylinder 7, wherein an annular damper is arranged on the outer circumferential wall of the chimney outer cylinder 7, the damper is composed of a plurality of fan-shaped separation boxes 1, each separation box 1 is separated by an inner partition plate 5, damping liquid is arranged in each separation box 1, and a small hole for the damping liquid to pass through is formed in each inner partition plate 5. A filling port 6 for filling damping liquid is formed in the top plate reinforcing plate 3 of one of the compartments 1. After damping liquid is added into the separation boxes 1 through the liquid adding ports 6, the damping liquid is uniformly distributed in each separation box 1 through the small holes, and when the chimney is vibrated by wind load, the damping liquid in each separation box 1 is vibrated to absorb energy through the small holes, so that the chimney is prevented from shaking to generate resonance.

In addition to this, the top of the damper is sealed by a top plate reinforcement plate 3. A platform is formed above the damper, and workers can climb to the upper side to perform maintenance and other operations.

Furthermore, the annular damper is in an incomplete annular shape, two ends of the annular damper are sealed through end plates 8, and a chimney vertical ladder 4 used for climbing up a chimney is arranged between the end plates 8 at the two ends. The incompletely annular damper is used for avoiding the chimney vertical ladder 4, and workers can climb to the top plate reinforcing plate 3 above the damper through the chimney vertical ladder 4 to add damping liquid or perform maintenance and other operations.

Specifically, the damper is connected with the chimney outer cylinder 7 through the box connecting plate 2, the bottom of the damper is supported through a damper support 9, and the damper support 9 is fixed on the chimney outer cylinder 7. The damper is further reinforced from the lower part, and the stability of the damper is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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 double-deck steel liquid frequency modulation attenuator for chimney, includes chimney urceolus (7), its characterized in that: the chimney outer barrel (7) is characterized in that an annular damper is arranged on the circumferential outer wall of the chimney outer barrel (7), the damper is composed of a plurality of fan-shaped separation boxes (1), each separation box (1) is separated through an inner partition plate (5), damping liquid is arranged in each separation box (1), and a small hole for the damping liquid to pass through is formed in each inner partition plate (5).

2. The liquid frequency modulation damper for the double-layer steel chimney according to claim 1, characterized in that: the top of the damper is sealed by a top plate reinforcing plate (3).

3. The liquid frequency modulation damper for the double-layer steel chimney according to claim 2, characterized in that: a filling opening (6) for filling damping liquid is formed in a top plate reinforcing plate (3) of one of the separation boxes (1).

4. The liquid frequency modulation damper for the double-layer steel chimney according to claim 1, characterized in that: the annular damper is in an incomplete annular shape, two ends of the damper are sealed through end plates (8), and a chimney vertical ladder (4) used for climbing up a chimney is arranged between the end plates (8) at the two ends.

5. The liquid frequency modulation damper for the double-layer steel chimney as claimed in claim 1, wherein: the damper is connected with the chimney outer cylinder (7) through a box body connecting plate (2), the bottom of the damper is supported through a damper support (9), and the damper support (9) is fixed on the chimney outer cylinder (7).