CN201560832U

CN201560832U - Heat-insulating hood for exhaust pipe

Info

Publication number: CN201560832U
Application number: CN2009201649875U
Authority: CN
Inventors: 李国红; 刘文元; 唐克远; 张联军
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2009-12-21
Filing date: 2009-12-21
Publication date: 2010-08-25
Anticipated expiration: 2019-12-21

Abstract

The utility model discloses a heat-insulating hood for an exhaust pipe, which is positioned outside an exhaust pipe of an engine and is used for wrapping the exhaust pipe. The heat-insulating hood has a three-layer structure including an aluminized sprint steel plate outer layer, an aluminum silicate asbestos-slab intermediate layer and an aluminized sprint steel plate inner layer; and three layers of materials are tightly attached by rolling press. Both the thicknesses of the aluminized sprint steel plate outer layer and the aluminized sprint steel plate inner layer are 0.2 mm. The thickness of the aluminum silicate asbestos-slab intermediate layer is 0.8 mm. A button edge structure is arranged on the periphery of the heat-insulating hood; and the width of the button edge is 5 mm. By designing the heat-insulating hood for the exhaust pipe into the layered structure, the utility model can realize favorable heat-insulating and noise-reducing functions and is simultaneously convenient to install.

Description

The exhaust insulation cover

Technical field

The utility model relates to a kind of heat-proof device, the thermal shield of the heat insulation usefulness of particularly a kind of engine exhaust pipe.

Background technique

Configuration for exhaust pipe cover of engine install purpose be for prevent oil or vehicle be expert at cross in fire good such as plastic paper be attached to cause on the outlet pipe on fire, and prevent that the hyperthermia radiation that outlet pipe self produces from causing a hidden trouble to contiguous component, Safety performance when increasing engine operation, its major function are heat insulation, noise reduction and protection.Existing exhaust pipe shield structure is to adopt individual layer corrosion resistant plate punching press or welding, and the floating screed bar is gained in strength in place.Exhaust pipe shield major defect of the prior art is that anti-acoustic capability is poor, vibration resistance is poor.Existing exhaust pipe shield structure is a thickness 1.0-1.5mm individual layer stainless steel structure, strengthens noise because of exhaust pipe shield vibration itself easily, rather than reduces engine noise.The exhaust pipe shield of individual layer stainless steel structure is heavier, and vibration resistance is bad, the fault that the thermal shield of many individual layer stainless steel structure often shakes and splits, and its heat insulation noise reduction effect is limited.

The model utility content

The utility model is in order to overcome defective in the above-mentioned prior art, by exhaust insulation being covered with meter component layer structure, can to realize good heat insulation decrease of noise functions.

Exhaust insulation cover of the present utility model, be positioned at the engine exhaust pipe outside, be used to wrap described outlet pipe, thermal shield is made up of three-decker, comprise aluminize spurt steel plate skin, aluminium silicate wool plate mesosphere and the spurt steel plate internal layer of aluminizing, trilaminate material fits tightly by roll extrusion.

Layer thickness is 0.2mm in the outer and spurt steel plate of aluminizing of the spurt steel plate of aluminizing; Aluminium silicate wool plate intermediate layer thickness is 0.8mm; The thermal shield periphery is established button limit structure, and button hem width degree is 5mm.

Compared with prior art, the utlity model has following beneficial effect:

1, the effectively weight reduction of spurt steel plate of aluminizing of exhaust insulation cover internal and external layer is difficult for during vibration rupturing;

2, damping material is adopted in the mesosphere, has good heat insulation, sound absorption;

3, because the spurt steel plate of aluminizing is softer, and deformation-compensated surplus is bigger, therefore be convenient to install.

Description of drawings

Fig. 1 is the worm's eye view of the utility model exhaust insulation cover;

Fig. 2 is the plan view of the utility model exhaust insulation cover;

Fig. 3 is the plan view of the utility model exhaust insulation cover;

Fig. 4 is the partial enlarged drawing of Fig. 1;

Fig. 5 is the utility model exhaust insulation stereogram.

Mark the following drawings mark thereon in conjunction with the accompanying drawings:

The 1-spurt steel plate skin of aluminizing, 2-aluminium silicate wool plate mesosphere, the 3-spurt steel plate internal layer of aluminizing, 4-detains the limit.

Embodiment

Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.

Extremely shown in Figure 5 as Fig. 1, a kind of exhaust insulation cover of the present utility model, be positioned at the engine exhaust pipe outside, be used to wrap outlet pipe, thermal shield is made up of three-decker, comprise aluminize spurt steel plate skin, aluminium silicate wool plate mesosphere and the spurt steel plate internal layer of aluminizing, described trilaminate material fits tightly by roll extrusion.Aluminium silicate wool plate intermediate layer material can anti-450 celsius temperatures, and for not containing the environment-friendly materials of asbestos component, thickness is 0.8mm, because non-asbestos damping material (being the aluminium silicate wool plate) is adopted in the mesosphere, it is heat insulation and sound-absorbing effect is remarkable.

Layer thickness is 0.2mm in the outer and spurt steel plate of aluminizing of the spurt steel plate of aluminizing.The thermal shield periphery is established button limit structure, and button hem width degree is 5mm.When guaranteeing sufficient intensity, reduce the weight of thermal shield like this, improved its resistance to shock.

The spurt steel plate of aluminizing of the 0.2mm of exhaust insulation cover internal and external layer of the present utility model has substituted common 1.0 to 1.5mm steel plates, and effectively weight reduction is difficult for during vibration rupturing; Damping material is adopted in the mesosphere, has good heat insulation, sound absorption; The spurt steel plate is softer owing to aluminize, and deformation-compensated surplus is bigger, therefore is convenient to install.

More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.

Claims

1. exhaust insulation cover, be positioned at the engine exhaust pipe outside, be used to wrap described outlet pipe, it is characterized in that, described thermal shield is made up of three-decker, comprise aluminize spurt steel plate skin, aluminium silicate wool plate mesosphere and the spurt steel plate internal layer of aluminizing, described trilaminate material fits tightly by roll extrusion.

2. exhaust insulation cover according to claim 1 is characterized in that, layer thickness is 0.2mm in described aluminize the spurt steel plate skin and the spurt steel plate of aluminizing.

3. exhaust insulation cover according to claim 2 is characterized in that, described aluminium silicate wool plate intermediate layer thickness is 0.8mm.

4. according to any described exhaust insulation cover in the claim 1 to 3, it is characterized in that described thermal shield periphery is established button limit structure, button hem width degree is 5mm.