CN217950476U

CN217950476U - Vortex end heat insulation structure of double-layer heat shield

Info

Publication number: CN217950476U
Application number: CN202222369317.5U
Authority: CN
Inventors: 康明龙; 牛鹏飞; 高磊; 连永鹏; 崔玺
Original assignee: Beehive Weiling Power Technology Jiangsu Co ltd
Current assignee: Beehive Weiling Power Technology Jiangsu Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-12-02
Anticipated expiration: 2032-09-07

Abstract

The utility model relates to a double-deck heat shield whirlpool end heat-proof structure, set up in the middle casing that connects gradually, apron and volute, the turbine in middle casing external termination impeller and through-put the volute through the apron, the outer terminal surface inner circle position of the corresponding apron of the outer terminal surface of middle casing crimping apron sets up the round outwards direction, around the annular heavy platform of axle center, the bottom face of annular heavy platform is in the outside of apron outer terminal surface outer lane and middle casing crimping face, the outer terminal surface inner circle of apron outwards crimping in proper order inside, the outer end of outer heat shield ring, the inner elasticity butt of outer heat shield ring sinks the middle casing terminal surface in the platform circle, the inner elasticity butt of inner heat shield ring is on the bottom face of annular heavy platform; the inner heat insulation ring cover is made of SUS 310S stainless steel. The crimping tool has the advantages of stable structure, good heat insulation performance, long service life and consideration of long-term use stress deformation and support elasticity maintenance at high temperature.

Description

Vortex end heat insulation structure of double-layer heat shield

Technical Field

The utility model relates to a turbocharging structure, a double-deck heat exchanger that separates whirlpool end heat-proof structure that specifically says so.

Background

If a large amount of heat is transferred between the middle shell and the volute of the turbocharger, coking of lubricating oil in the shell and high-temperature damage to a shaft system are easily caused. The heat insulation structure of the existing structure adopts the following steps: middle casing and volute directly link, and two-layer heat exchanger that separates of department crimping directly because vortex end row's temperature is higher, and two-layer heat exchanger that separates is simple keeps apart, on heat-proof quality and the support elasticity performance of reply high temperature, can't satisfy the pressure boost that improves day by day high row's temperature performance requirement, and life is lower, influences booster safety in utilization, life-span.

Disclosure of Invention

The utility model provides a stabilize crimping has better heat-proof quality, compromises long-term service stress deformation under the high temperature and keeps support elastic force, long service life's double-deck heat exchanger vortex end thermal-insulated structure that separates.

The utility model adopts the technical proposal that: the utility model provides a double-deck heat exchanger vortex end heat-proof structure, sets up in middle casing, apron and the volute that connects gradually, and the turbine in middle casing external termination impeller and the through-put axle access volute, its characterized in that: a circle of outward annular sinking tables which are arranged at positions, corresponding to the inner ring of the outer end face of the cover plate, of the outer end face of the middle shell crimping cover plate are arranged, the bottom end face of each annular sinking table is arranged on the outer side of the crimping face of the outer end face of the cover plate and the middle shell, the inner ring of the outer end face of the cover plate is outwards sequentially crimped with the outer ends of the inner heat-insulating ring cover and the outer heat-insulating ring cover, the inner end of the outer heat-insulating ring cover is elastically abutted against the end face of the middle shell in the annular sinking tables, and the inner end of the inner heat-insulating ring cover is elastically abutted against the bottom end face of the annular sinking tables; the inner heat insulation ring cover is made of SUS 310S stainless steel.

The outer heat insulation ring cover is made of nickel-based stainless steel or SUS 310S stainless steel.

The inner end of the inner heat insulation ring cover is provided with a circle of elastic inner ring cover edge which is flatly attached and elastically abutted to the bottom end face of the annular sinking platform.

The inner end of the outer heat insulation ring cover extends into the space between the outer end face of the turbine and the end face of the middle shell.

The utility model has the advantages that: the cover plate is arranged between the scroll casing and the middle casing, the turbine and the middle casing are divided into three cavity parts through the design that the cover plate covers the inner heat insulation ring cover and the outer heat insulation ring cover, a high-temperature area is formed between the scroll casing and the outer heat insulation ring cover, a medium-temperature area is formed between the inner heat insulation ring cover and the outer heat insulation ring cover, a low-temperature area is formed between the outer heat insulation ring cover and the middle casing, the inner heat insulation ring cover adopts SUS 310S stainless steel to play a role in blocking heat transfer, the heat transfer of a large part of a door is blocked to the medium-temperature area, the outer heat insulation ring cover is positioned between the medium-temperature area and the low-temperature area through nickel-based alloy stainless steel, and is connected in the annular sinking platform in an attaching mode through the elastic inner ring cover edge of the inner ring, the plastic stress and the creep stress under the high temperature can be effectively reduced, the performance of the heat insulation ring cover is improved, the outer heat insulation ring cover can still maintain the supporting elasticity even under the condition that the temperature of the vortex end is very high, and the reliability service life of the outer heat insulation ring cover is prolonged.

Drawings

FIG. 1 is a schematic view of the utility model;

fig. 2 is an enlarged structural view of a portion a in fig. 1.

In the figure: the heat-insulating device comprises a middle shell 1, an outer heat-insulating ring cover 2, an elastic inner ring cover edge 21, an inner heat-insulating ring cover 3, an impeller 4, a cover plate 5, a volute 6, a turbine 7 and an annular sinking platform 8.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

FIGS. 1-2 show: a vortex end heat insulation structure of a double-layer heat insulation cover comprises a middle shell 1, a cover plate 5 and a volute 6 which are sequentially connected and locked through bolt penetration, wherein the outer end of the middle shell 1 is connected with an impeller 4 and penetrates through a shaft to be connected into a turbine 7 in the volute 6 through the cover plate 5, a circle of outward-direction annular sinking platform 8 around the center of the shaft is arranged at the position, corresponding to the inner ring of the outer end face of the cover plate, of the outer end face of the pressing connection cover plate of the middle shell 1, the bottom end face of the annular sinking platform is arranged on the outer side of the pressing connection face of the outer end face of the cover plate and the middle shell, the inner ring of the outer end face of the cover plate is sequentially pressed connection with the outer ends of inner and outer heat insulation ring covers 3 and 2 outward, the inner end of the outer heat insulation ring cover extends into the space between the outer end face of the turbine 7 and the end face of the middle shell and is elastically abutted against the end face of the middle shell in the annular sinking platform ring, and the inner end of the inner heat insulation ring cover 2 is provided with a circle of an elastic inner ring cover edge 21 which is elastically abutted against the bottom face of the annular sinking platform.

In the embodiment, the inner heat insulation ring cover is made of SUS 310S stainless steel; the outer heat insulation ring cover is made of nickel-based stainless steel. Different performance materials are selected according to different positions, so that the temperature resistance requirement is met and the economic cost is considered.

On the basis of the embodiment, the inner end of the outer heat insulation ring cover can also be provided with a circle of cover edge for abutting against the end surface of the middle shell.

Claims

1. The utility model provides a double-deck heat exchanger vortex end structure that insulates against heat, sets up in middle casing, apron and the volute that connects gradually, and the turbine in middle casing external termination impeller and the through-put axle inserts the volute through the apron, its characterized in that: a circle of annular sinking platforms which face outwards and surround the shaft center are arranged at positions, corresponding to the inner ring of the outer end face of the cover plate, of the outer end face of the middle shell crimping cover plate, the bottom end face of each annular sinking platform is arranged on the outer side of the crimping face of the outer end face of the cover plate and the middle shell, the inner ring of the outer end face of the cover plate is sequentially crimped with the outer ends of the inner and outer heat-insulating ring covers outwards, the inner end of the outer heat-insulating ring cover is elastically abutted against the end face of the middle shell in the annular sinking platform ring, and the inner end of the inner heat-insulating ring cover is elastically abutted against the bottom end face of the annular sinking platforms; the inner heat insulation ring cover is made of SUS 310S stainless steel.

2. The vortex end thermal insulation structure of the double-layer heat shield according to claim 1, wherein: the outer heat insulation ring cover is made of nickel-based stainless steel or SUS 310S stainless steel.

3. The vortex end thermal insulation structure of the double-layer heat shield according to claim 1, wherein: the inner end of the inner heat insulation ring cover is provided with a circle of elastic inner ring cover edge which is flatly attached and elastically abutted to the bottom end face of the annular sinking platform.

4. The vortex end thermal insulation structure of the double-layer heat shield according to claim 1, wherein: the inner end of the outer heat insulation ring cover extends into the space between the outer end face of the turbine and the end face of the middle shell.