Abstract:
본 발명에 따른 전열관단열용 벨로우즈커버(20)는, 내열성이 높은 단열재(22)와 탄력성 및 내충격강도가 높은 보강재(24)가 교대로 반복적층된 다층 복합구조로 이루어진다. 본 발명에 따른 전열관단열용 벨로우즈커버는 상기 단열재가 가장 안측과 가장 외측에 배치되어 내곽단열층(S1)과 외곽단열층(S2)을 구성하고, 상기 내곽단열층과 외곽단열층 사이에는 보강재로 이루어진 중간보강층(D1)이 배치되는 3중겹을 최소한의 구성으로 하여 이루어진다. 상기 내곽단열층의 표면과, 외곽단열층의 표면에는 부식방지피막(201)이 갖추어진다. 상기 단열재는 내열실리콘 소재로 이루어지고, 상기 보강재는 아라미드(aramid)섬유 소재로 이루어진다. 이와 같은 본 발명에 따른 전열관단열용 벨로우즈커버에 의하면 단열재와 보강재가 복합된 구성으로 이루어지는 특성상 내충격성과 내열특성이 높기 때문에 반복적인 고열의 작동유체와 접하여 오랜시간 동안 신축작동이 이루어지는 경우에도 불구하고 쉽게 열화되지 않는다는 이점이 있다.
Abstract:
A tubular base plate assembly has a lower surface connected to the boiler casing and an upper surface. A tubular seal plate assembly is positioned above the base plate assembly upper surface having a mating surface facing the base plate assembly upper surface with a plurality of grooves therein. Sealing material is provided within the grooves. A tubular hub assembly is positioned above the seal plate assembly. A plurality of fasteners connects the seal plate assembly to the hub. A plurality of external brackets connects the seal plate assembly to the base plate assembly to secure the seal plate assembly. The sealing material forms a first gasket between the seal plate assembly and the base plate assembly.
Abstract:
A bellows cover (20) for insulating a heat-transfer pipe according to the present invention has a multi-layered complex structure, in which an insulating material (22) of high heat-resistance and a reinforcement material (24) of high elasticity and impact-resistance are alternately and repetitively stacked. In the bellows cover (20) for insulating a heat-transfer pipe according to the present invention, the insulating material includes three minimal component layers, in which an inner insulating layer (S1) and an outer insulating layer (S2) are respectively disposed at the innermost and outermost sides, and an intermediate reinforcement layer (D1) is disposed between the inner insulating layer and the outer insulating layer and formed of a reinforcement material. A corrosion-preventing film (201) is provided on the surface of the inner insulating layer and the surface of the outer insulating layer. The insulating layer is formed of heat-resistant silicon material. The reinforcement material is formed of an aramid fiber material. According to the present invention as above, the impact-resistance and the heat-resistance are high due to the properties of the complex structure of the insulating material and the reinforcement material such that the cover does not easily deteriorate even when extension and retraction operations of the cover are carried out for a long time while repetitively in contact with high temperature working fluids.