CN205172649U - Turbo charger bridge cut -off structure that insulates against heat - Google Patents

Abstract

The utility model provides a turbo charger's bridge cut -off heat insulation including the thermal -insulated circle of elasticity, separate heat exchanger and tang clamping ring, separates heat exchanger and comprises fixed loop limit, barrel, annular cover plate and spindle hole, both ends that fixed loop limit and annular cover plate are provided the barrel respectively, and center that the spindle hole is provided annular cover plate, the tang clamping ring is formed by turbine casing laminating surface, midbody laminating surface with at a distance from the spacing tang of heat exchanger, the tang clamping ring sets up between fixed loop limit and turbine shell, and the thermal -insulated circle of elasticity sets up between fixed loop limit and midbody. Just so form the insulating layer between the turbine shell is with the midbody, it can prevent the heat to midbody and the transmission of pressure shell effectively. The tang clamping ring is between turbine casing and the midbody behind the axial pressurized, and the thermal -insulated circle of elasticity is sealed at axial deformation, and simultaneously, it is spacing at axial elasticity pressurized to separate heat exchanger, but will not crushing or fracturing, and this is a bridge cut -off heat insulation, can realize between turbine casing and the midbody thermal -insulated and sealed, handling ease and assembly again.

Description

A kind of turbosupercharger bridge insulation thermal resistance structure

[technical field]

The utility model relates to a kind of gas-discharging type turbosupercharger, particularly relates to the heat insulating member between turbine case and intermediate in gas-discharging type turbosupercharger.

[background technique]

Gas-discharging type turbosupercharger be utilize motor to discharge high-pressure high-temperature waste gas as power source, the high temperature pressure waste gas that motor is discharged introduces the turbo machine in turbosupercharger, the turbine utilizing the energy contained by waste gas to promote in turbo machine rotates, thus drive turbine to rotate, drive compressor impeller coaxial with it to rotate simultaneously, the gas handling system of carrying motor after air carries out contractive pressure will be sucked by gas compressor, high-density air is filled with in cylinder, increase the oxygen content in cylinder, the output power of same model motor can be improved like this, also the Economy significantly improving motor can be improved, impel diesel oil Thorough combustion, improve the thermal efficiency of motor, reduce fuel consumption rate, reduce noxious gas emission, reduce noise, therefore, vehicular engine and marine engine all need to mate turbosupercharger, continuous-pressure breathing is the developing direction of motor.

The gas-discharging type turbosupercharger generally used at present, comprise turbine case, turbine, turbine shaft, sliding bearing, intermediate, diffusion plate, supercharging impeller, pressure shell and heat retaining ring, turbine and supercharging impeller are arranged on the two ends of turbine shaft respectively, turbine is arranged in turbine case, supercharging impeller is arranged in pressure shell, turbine shaft is arranged on intermediate by two sliding bearings, turbine case and pressure shell are fixedly mounted on the both sides of intermediate respectively hermetically, and two sliding bearings carry out lubrication and cooling by lubricant oil with pressure.According to the supercharging principle of turbosupercharger, improve the boost performance of turbine shaft, rotating speed is more high better, but between the higher sliding bearing of rotating speed and turbine shaft, friction generates heat will sharply increase, this raises causing the operating temperature of turbosupercharger, the temperature of operating temperature too high output squeezing air is also high together with step-up, oxygen content in per unit volume pressurized air must reduce, this directly can affect the Thorough combustion of cylinder fuel, the exhaust emissions of motor can worsen, and affects the exhaust index of motor.Meanwhile, the rising of turbocharger operation temperature significantly can reduce lubricating oil viscosity, can increase rotational resistance.How to reduce the operating temperature of turbosupercharger, the temperature especially reducing part beyond turbine case reduces the key of output squeezing air temperature.

Applicants have invented a kind of bridge insulation thermal resistance type turbosupercharger for this reason, its structure as shown in Figure 1, it comprises turbine case 1, turbine 2, turbine shaft 3, sliding bearing 4, intermediate 5, diffusion plate 6, supercharging impeller 7 and pressure shell 8, turbine 2 and supercharging impeller 7 are arranged on the two ends of turbine shaft 3 respectively, turbine 2 is arranged in turbine case 1, supercharging impeller 7 is arranged in pressure shell 8, turbine shaft 3 is arranged on intermediate 5 by two sliding bearings 4, turbine case 1 is fixedly mounted on the left side of intermediate 5, left side and the intermediate 5 of diffusion plate 6 link into an integrated entity hermetically, right side and the pressure shell 8 of diffusion plate 6 are tightly connected integral, lubricating oil path on intermediate 5 and two sliding bearings 4 interlink, bridge insulation thermal resistance structure 9 is provided with between turbine case 1 and intermediate 5.It prevents high-temperature gas in turbine case to intermediate 5 and pressure shell 8 transferring heat effectively, the operating temperature of intermediate 5 and pressure shell 8, thus reduces the temperature of delivery pressure air.Wherein, the bridge insulation thermal resistance structure of turbosupercharger is crucial.

[model utility content]

The purpose of this utility model is to provide a kind of bridge insulation thermal resistance structure of turbosupercharger.

The technological scheme that the utility model is taked is:

A kind of bridge insulation thermal resistance structure of turbosupercharger, it is characterized in that: comprise Elastic heat insulation circle, thermal shield and seam pressure ring, described thermal shield is the circular cowling of band seam, it is by retaining ring limit, cylindrical shell, annular shroud plate and spindle hole composition, retaining ring limit is arranged on the right-hand member of cylindrical shell, annular shroud plate is arranged on cylindrical shell left end, spindle hole is arranged on the central position of annular shroud plate, its aperture is corresponding with the corresponding diameter of axle of turbine shaft, described seam pressure ring is by turbine case pressing surface, intermediate pressing surface and the spacing seam composition of thermal shield, the spacing seam of thermal shield is corresponding with retaining ring limit, seam pressure ring is enclosed within the retaining ring limit of thermal shield by the spacing seam of thermal shield, described seam pressure ring is arranged between retaining ring limit and turbine case, Elastic heat insulation circle is arranged between retaining ring limit and intermediate.

In this programme, described Elastic heat insulation circle is graphite heat insulation ring, the special-shaped part that thermal shield is made up of superinsulation material, and seam pressure ring is that metallic material is made.

Owing to having set up bridge cut-off heat-insulating structure in the junction of turbine case and intermediate, described bridge insulation thermal resistance structure is made up of Elastic heat insulation circle, thermal shield and seam pressure ring, so just at the thermal-protective coating together with being formed between intermediate is in conjunction with end face of high temperature air cavity in turbine case, this be in turbine case high-temperature gas to the main channel of intermediate heat conduction, wherein, Elastic heat insulation circle is thermal-protective coating and edge face sealing member, thermal shield is insulator, high-temperature gas in turbine case is difficult to pass to intermediate, thus effectively prevents heat to transmit to intermediate and pressure shell 8.Seam pressure ring is the axial limiting part between turbine case and intermediate, also be the axial limiting part of thermal shield, be fixedly connected with in process at turbine case with intermediate, seam pressure ring axial compression between turbine case and intermediate, first seam pressure ring is oppressed Elastic heat insulation circle and is sealed in axial deformation, simultaneously, thermal shield is driven to draw close laminating to Elastic heat insulation circle, make thermal shield spacing at axial elasticity pressurized, but can not crush or pressure break, this is a kind of bridge insulation thermal resistance structure, can realize the heat insulation of turbine case and intermediate junction and seal, and is convenient to again processing and assembling.

[accompanying drawing explanation]

Fig. 1 is the structural representation using turbosupercharger of the present utility model;

Fig. 2 is structural representation of the present utility model;

Fig. 3 is the structural representation of thermal shield;

Fig. 4 is the structural representation of seam pressure ring.

In figure, 1-turbine case; 2-turbine; 3-turbine shaft; 4-sliding bearing; 5-intermediate; 6-diffusion plate; 7-supercharging impeller; 8-pressure shell; 9-bridge insulation thermal resistance structure; 10-thermal insulating pad; 91-Elastic heat insulation circle; 92-thermal shield; 93-seam pressure ring; 921-retaining ring limit; 922-cylindrical shell; 923-annular shroud plate; 924-spindle hole; 931-turbine case pressing surface; 932-intermediate pressing surface; The spacing seam of 933-thermal shield.

[embodiment]

Below in conjunction with accompanying drawing, embodiment of the present utility model is described:

Embodiment 1:

It is a kind of use turbosupercharger of the present utility model shown in Fig. 1 ~ Fig. 4, it comprises turbine case 1, turbine 2, turbine shaft 3, sliding bearing 4, intermediate 5, diffusion plate 6, supercharging impeller 7, pressure shell 8 and bridge insulation thermal resistance structure 9, wherein, turbine 2 and supercharging impeller 7 are arranged on the two ends of turbine shaft 3 respectively, turbine 2 is arranged in turbine case 1, supercharging impeller 7 is arranged in pressure shell 8, turbine shaft 3 is arranged on intermediate 5 by two sliding bearings 4, turbine case 1 is fixedly mounted on the left side of intermediate 5 by bridge insulation thermal resistance structure 9, left side and the intermediate 5 of diffusion plate 6 link into an integrated entity hermetically, right side and the pressure shell 8 of diffusion plate 6 are tightly connected integral, lubricating oil path on intermediate 5 and two sliding bearings 4 interlink, described bridge insulation thermal resistance structure 9 is by Elastic heat insulation circle 91, thermal shield 92 and seam pressure ring 93 form, described thermal shield 92 is the circular cowling of band seam, it is by retaining ring limit 921, cylindrical shell 922, annular shroud plate 923 and spindle hole 924 form, retaining ring limit 921 is arranged on the right-hand member of cylindrical shell 922, annular shroud plate 923 is arranged on cylindrical shell 922 left end, spindle hole 924 is arranged on the central position of annular shroud plate 923, its aperture is corresponding with the corresponding diameter of axle of turbine shaft 3, seam pressure ring 93 is made up of the spacing seam 933 of turbine case pressing surface 931, intermediate pressing surface 932 and thermal shield, and the spacing seam of thermal shield 933 is corresponding with retaining ring limit 921.Described seam pressure ring 93 is arranged between retaining ring limit 921 and turbine case 1, and Elastic heat insulation circle 91 is arranged between retaining ring limit 921 and intermediate 5; In this programme, described Elastic heat insulation circle 91 is graphite heat insulation ring, and thermal shield 92 is the special-shaped parts be made up of superinsulation material, and seam pressure ring 93 is made for metallic material, is equipped with thermal insulating pad 10 at turbine case 1 and other junction plane of intermediate 5.

Owing to having set up bridge cut-off heat-insulating structure 9 at turbine case 1 and the junction of intermediate 5, described bridge insulation thermal resistance structure 9 is designed to by Elastic heat insulation circle 91, the Split assembled structure that thermal shield 92 and seam pressure ring 93 form, so just at the thermal-protective coating together with being formed between intermediate 5 is in conjunction with end face of high temperature air cavity in turbine case 1, here be in turbine case high-temperature gas to the main channel of intermediate heat conduction, wherein, Elastic heat insulation circle 91 is thermal-protective coating and edge face sealing member, thermal shield 92 is insulators, high-temperature gas in the high temperature air cavity of turbine case is difficult to pass to intermediate 5, thus effectively prevent heat to transmit to intermediate 5 and pressure shell 8, seam pressure ring 93 is the axial limiting part between turbine case 1 and intermediate 5, also be the axial limiting part of thermal shield 92, after turbine case 1 is fixedly connected with intermediate 5, seam pressure ring 93 is axial compression between turbine case 1 and intermediate 5, in the process, first seam pressure ring 93 is oppressed Elastic heat insulation circle 91 and is sealed in axial deformation, simultaneously, thermal shield 92 is driven to draw close laminating to Elastic heat insulation circle 91, make thermal shield 92 at axial compression elastic spacing, but can not crush or pressure break, this is a kind of bridge insulation thermal resistance structure, the heat insulation of turbine case and intermediate junction can be realized and seal, be convenient to again processing and assembling.Set up thermal insulating pad 10 at turbine case 1 and other junction plane of intermediate 5, just can cut off heat transmission channels between turbine case 1 and intermediate 5 better, bridge insulation thermal resistance is more thorough.

Claims (1)

1. the bridge insulation thermal resistance structure of a turbosupercharger, it is characterized in that: comprise Elastic heat insulation circle (91), thermal shield (92) and seam pressure ring (93), described thermal shield (92) is the circular cowling of band seam, it is by retaining ring limit (921), cylindrical shell (922), annular shroud plate (923) and spindle hole (924) composition, retaining ring limit (921) is arranged on the right-hand member of cylindrical shell (922), annular shroud plate (923) is arranged on cylindrical shell (922) left end, spindle hole (924) is arranged on the central position of annular shroud plate (923), its aperture is corresponding with the corresponding diameter of axle of turbine shaft (3), described seam pressure ring (93) is by turbine case pressing surface (931), intermediate pressing surface (932) and the spacing seam of thermal shield (933) composition, the spacing seam of thermal shield (933) is corresponding with retaining ring limit (921), seam pressure ring (93) is enclosed within the retaining ring limit (921) of thermal shield (92) by the spacing seam of thermal shield (933), described seam pressure ring (93) is arranged between retaining ring limit (921) and turbine case (1), Elastic heat insulation circle (91) is arranged between retaining ring limit (921) and intermediate (5).