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1. 发明专利

JPH10176530A NON-METALLIC TELESCOPIC JOINT 失效
公开(公告)号：JPH10176530A
公开(公告)日：1998-06-30
申请号：JP33881896
申请日：1996-12-19
申请人： HITACHI LTD , HITACHI SHIPBUILDING ENG CO
发明人： SAKAMOTO TAKEYOSHI , HIRAI HISASHI
IPC分类号： F01N13/08 , F01D25/30 , F01N13/14 , F02C7/00 , F16L27/12 , F01N7/08 , F01N7/14
摘要： PROBLEM TO BE SOLVED: To prevent the generation of damage of a telescopic heat insulating material, and prolong the lifetime by preventing the generation of negative pressure in an exposed part of the telescopic heat insulating material so that fatigue such as a vibration due to a vortex and negative pressure is not applied to the exposed part. SOLUTION: A vortex, which is generated by a high temperature fluid A at a part of an open part 51, is remarkably reduced at a separated position in the downstream of a telescopic joint unit 21. A part of the high temperature fluid A, which flows inside of a sleeve 50, always flows to the open part 51a through a ventilation hole 52 so as to reduce the negative pressure, and the spiral B is disturbed for reduction. Since negative pressure is not generated in an exposed part 24a of the telescopic heat insulation material 24 and fatigue such as a vibration due to the vortex and the negative pressure is not applied to the exposed part 24a, generation of damage of the telescopic heat insulating material 24 is prevented so as to prolong the lifetime.

2. 发明专利

JPH0777298A HEAT INSULTING MATERIAL SUPPORTING STRUCTURE IN DUCT 失效
公开(公告)号：JPH0777298A
公开(公告)日：1995-03-20
申请号：JP22375193
申请日：1993-09-09
申请人： HITACHI SHIPBUILDING ENG CO
发明人： HIRAI HISASHI
IPC分类号： F16L59/12 , F24F13/02
摘要： PURPOSE:To facilitate installation work of a protecting plate by forming an engaging part in a supporting frame member to be installed on the inside face of a duct main body and forming an engaged part, which is engaged with the engaging part slidably in the longitudinal direction, in the protecting plate covering the surface of a heat insulating material. CONSTITUTION:In a duct, which is arranged in a plant installation and has a comparatively large cross sectional area, a heat insulating material such, as ceramic fiber and rock wool, for example, is arranged on the inside face of a plate body 3 constructing a duct main body. On the inside face of the plate body 3, supporting frame plates 11, in each of which plural reverse trapezoidal projections (engaging parts) 12 are formed at the predetermined intervals, are installed at the predetermined intervals along the longitudinal direction. On the other hand, on a protecting plate 21 side, reverse trapezoidal groove parts (engaged parts) 22, which slidably engage with the projection parts 12 of the supporting frame plate 11, are formed. In supporting the heat insulating material on the inside face of a duct main body, the heat insulating material is arranged between the supporting frame plates 11 fixed in the predetermined positions, and then, the protecting plate 21 is installed via the engagement, between the groove parts 22 and the projecting parts 12.

3. 发明专利

JPS6034644B2 失效
公开(公告)号：JPS6034644B2
公开(公告)日：1985-08-09
申请号：JP8439277
申请日：1977-07-13
申请人： HITACHI SHIPBUILDING ENG CO
发明人： HIRAI HISASHI
IPC分类号： E01D2/00 , E01D21/00

4. 发明专利

JPS5419528A DEVICE FOR MOVING BRIDGE GIRDER UP AND DOWN 失效
公开(公告)号：JPS5419528A
公开(公告)日：1979-02-14
申请号：JP8439277
申请日：1977-07-13
申请人： HITACHI SHIPBUILDING ENG CO
发明人： HIRAI HISASHI
IPC分类号： E01D2/00 , E01D21/00

5. 发明专利

JPH06341592A HEAT RESERVING MATERIAL INSTALLING METHOD ON DUCT 失效
公开(公告)号：JPH06341592A
公开(公告)日：1994-12-13
申请号：JP13302793
申请日：1993-06-03
申请人： HITACHI SHIPBUILDING ENG CO
发明人： HIRAI HISASHI
IPC分类号： F16L59/14
摘要： PURPOSE:To prevent a contraction owing to a vibration so as to eliminate the generation of a clearance by the expanding pressure of heat reserving material block, and to reduce the fiber carried out by the wind invading from the clearance of a cover body extremely, by reducing by half the fiber along the surface of the heat reserving material block. CONSTITUTION:When a soft type heat reserving material on which a fiber is arranged in one direction is installed to the inner surface of a duct bottom 15, heat reserving material blocks 13 are formed by combining plural heat reserving material pieces cut at a desired size by making the surface into a cut surface to a fiber laminate layer surface. And the heat reserving material blocks 13 are compressed to contact in the direction to reduce the thickness in the thickness direction with binding bands 14, and they are arranged between the stud bolts 16 of the duct bottom plate 15. And after the binding bands 14 are removed, the surface of the heat reserving block group is covered with cover bodies 17, and the cover bodies 17 are fixed through the stud bolts 16.

6. 发明专利

JPS5246640A METHOD OF CHANGEEOVER CONSTRUCTION OF EXISTING TRAFFIC ROUTE AND OVERHEAD ELEVATED TRAFFIC ROUTE 失效
公开(公告)号：JPS5246640A
公开(公告)日：1977-04-13
申请号：JP12220375
申请日：1975-10-08
申请人： HITACHI SHIPBUILDING ENG CO
发明人： HIRAI HISASHI , KANEMATSU HIDEO
IPC分类号： E01D2/00 , E01D21/00

7. 发明专利

JPS58164864A UTILIZATION OF VALLEY PART IN MOUNTAINOUS REGION 失效
公开(公告)号：JPS58164864A
公开(公告)日：1983-09-29
申请号：JP4846082
申请日：1982-03-25
申请人： HITACHI SHIPBUILDING ENG CO
发明人： HIRAI HISASHI
IPC分类号： E04H3/00 , E04H6/12

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