CN220059677U

CN220059677U - Floating sealing structure of exhaust volute

Info

Publication number: CN220059677U
Application number: CN202321574182.4U
Authority: CN
Inventors: 李可政; 常春辉
Original assignee: Qingdao Zhongke Guosheng Power Technology Co ltd
Current assignee: Qingdao Zhongke Guosheng Power Technology Co ltd
Priority date: 2023-06-19
Filing date: 2023-06-19
Publication date: 2023-11-21
Anticipated expiration: 2033-06-19

Abstract

The utility model relates to the field of floating sealing devices of exhaust volutes, in particular to a floating sealing structure of an exhaust volute of a special structure, which comprises a coupler, a turbine housing and a baffle ring, wherein a floating ring is arranged on the coupler and is limited by the baffle ring, and the outer side of the floating ring is connected with the turbine housing. The utility model discloses an annular structure which is convenient to install and can be sealed.

Description

Floating sealing structure of exhaust volute

Technical Field

The utility model relates to the field of exhaust volute floating sealing devices, in particular to an exhaust volute sealing structure with a special structure.

Background

Exhaust gas generated during operation of the gas turbine is discharged through the exhaust volute, and in order to prevent the exhaust gas generated by the gas generator from channeling into the coupling, it is necessary to seal the junction between the power turbine and the coupling.

The prior art has at least the following problems: the traditional exhaust volute is inconvenient to install a floating sealing device; therefore, the floating sealing structure of the exhaust volute is designed, so that the gas turbine can be conveniently installed before starting to work, and a good sealing effect can be achieved after the gas turbine works.

Disclosure of Invention

According to the defects of the prior art, the utility model discloses a structure which is simple in structure, convenient to install and capable of being sealed. The technical scheme for solving the technical problems is as follows: the device comprises a coupler, a turbine shell and a baffle ring, wherein a floating ring is arranged on the coupler and is limited through the baffle ring, and the outer side of the floating ring is connected with the turbine shell. The floating ring is arranged on the coupler, so that the floating ring can be nested on the outer turbine shell in the installation process; the baffle ring is arranged, so that the inner floating ring can be fixed, and the axial movement is prevented; through setting up the structure that the shaft coupling wholly assembled, the suit is in turbine housing wheel, constitutes whole external equipment jointly.

As optimization, the middle part of the floating ring is provided with a mounting step. Through setting up the installation step, can make things convenient for the floating ring to install on the shaft coupling, avoid the floating ring damage because of the too big floating ring that leads to of external force.

As an optimization, before installation, the outer diameter of the floating ring is larger than the inner diameter of the turbine shell; after installation, the outside diameter of the floating ring is equal to the inside diameter of the turbine housing. The outer diameter of the floating ring is larger than the inner diameter of the turbine shell before installation, so that when the coupler is pushed into the turbine shell and in place, the outer diameter of the floating ring is connected with the turbine shell, and no gap exists between the floating ring and the turbine shell, so that sealing is formed.

Preferably, the floating ring is disposed between the turbine housing and the coupling. Through setting up the floating ring between turbine casing and shaft coupling, can make shaft coupling and turbine casing in-process of being heated produce relative slip, can not lead to spare part damage because of thermal deformation.

As an optimization, the outer diameter of the floating ring is consistent with the outer diameter of the coupler. Through setting up floating ring outside diameter and shaft coupling outside diameter unanimity, can prevent the damage that the floating ring leads to because of the atress is inconsistent about in the heating process.

As optimization, a gap is reserved between the inner diameter of the floating ring and the coupler. By arranging the internal gap, a thermal expansion and contraction space can be provided for the floating ring, and the deformation of the floating ring caused by thermal expansion is avoided.

Compared with the prior art, the utility model has the following beneficial effects:

the floating ring is arranged on the coupler, so that the floating ring can be nested on the outer turbine shell in the installation process; the baffle ring is arranged, so that the inner floating ring can be fixed, and the axial movement is prevented; through setting up the structure that the shaft coupling wholly assembled, the suit is in turbine housing wheel, constitutes whole external equipment jointly. Overcomes the defects of the prior art, and develops a structure which has simple structure, is convenient to install and can be sealed.

Drawings

Fig. 1 is a schematic view of a novel shell-and-tube heat exchanger according to the present utility model.

FIG. 2 is a schematic view of the floating ring structure of the present utility model.

1, a floating ring in the figure; 2. a baffle ring; 3. a connecting piece; 4. a coupling; 5. a turbine housing;

6. and (5) installing a step.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present utility model will be described in detail below with reference to the following detailed description and the accompanying drawings.

Example 1

As shown in fig. 1-2, the floating seal structure of the exhaust volute comprises a coupler 4, a turbine housing 5 and a baffle ring 2, wherein a floating ring 1 is arranged on the coupler 4, the floating ring 1 is limited by the baffle ring 2, and the outside of the floating ring 1 is connected with the turbine housing 5. By providing the floating ring 1 on the coupling 4, it is possible to nest in the outer turbine housing 5 during installation; by arranging the baffle ring 2, the inner floating ring 1 can be fixed, and the axial movement is prevented; the structure formed by integrally assembling the coupler 4 is sleeved in the wheel of the turbine shell 5, and the integral external equipment is formed together.

As an optimization, the middle part of the floating ring 1 is provided with a mounting step 6. Through setting up installation step 6, can make things convenient for floating ring 1 to install on shaft coupling 4, avoid the floating ring 1 damage because of the too big external force leads to.

As an optimization, before installation, the outer diameter of the floating ring 1 is larger than the inner diameter of the turbine housing 5; after installation, the outer diameter of the floating ring 1 is equal to the inner diameter of the turbine housing 5. By providing the outer diameter of the floating ring 1 before installation to be larger than the inner diameter of the turbine housing 5, the outer diameter of the floating ring 1 can be connected with the turbine housing 5 and form a seal with the turbine housing 5 without clearance when the coupling 4 is pushed into the turbine housing 5 and put in place.

As an optimization, the floating ring 1 is arranged between the turbine housing 5 and the coupling 4. By arranging the floating ring 1 between the turbine housing 5 and the coupling 4, the coupling 4 and the turbine housing 5 can slide relatively in the heating process, and parts cannot be damaged due to thermal deformation.

As an optimization, the outer diameter of the floating ring 1 is consistent with the outer diameter of the coupler 4. By providing the floating ring 1 with the same outer diameter as the coupling 4, damage to the floating ring 1 due to inconsistent left and right stresses during heating can be prevented.

As an optimization, a gap is reserved between the inner diameter of the floating ring 1 and the coupler 4. By providing the internal gap, a thermal expansion and contraction space can be provided for the floating ring 1, and deformation of the floating ring 1 due to thermal expansion can be avoided.

During operation, the floating ring 1 expands the inner diameter of the floating ring through the mounting step 6, is nested in the groove on the surface of the coupler 4, is limited through the baffle ring 2, and is plugged into the turbine housing 5 by the integral structure after being contracted, is attached to the inner surface of the turbine housing 5, and can compensate axial displacement in the thermal expansion process of the turbine housing 5, so that damage to parts is prevented.

The description of the orientation or relative positional relationship of the structures in the present utility model, such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the structures referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Claims

1. The utility model provides an exhaust spiral case floating seal structure, includes shaft coupling (4), turbine housing (5) and fender ring (2), its characterized in that: the shaft coupling (4) is provided with a floating ring (1), the floating ring (1) is limited by a baffle ring (2), and the outer side of the floating ring (1) is connected with a turbine shell (5).

2. The exhaust volute floating seal arrangement of claim 1, wherein: the middle part of the floating ring (1) is provided with a mounting step (6).

3. The exhaust volute floating seal structure of claim 2, wherein: before installation, the outer diameter of the floating ring (1) is larger than the inner diameter of the turbine shell (5); after installation, the outer diameter of the floating ring (1) is equal to the inner diameter of the turbine housing (5).

4. The exhaust volute floating seal arrangement of claim 3, wherein: the floating ring (1) is arranged between the turbine housing (5) and the coupling (4).

5. The exhaust volute floating seal arrangement of claim 4, wherein: the outer diameter of the floating ring (1) is consistent with the outer diameter of the coupler (4).

6. The exhaust volute floating seal arrangement of claim 5, wherein: a gap is reserved between the inner diameter of the floating ring (1) and the coupler (4).