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1. 发明专利

JP2004190958A Fluid heating tank device 审中-公开
公开(公告)号：JP2004190958A
公开(公告)日：2004-07-08
申请号：JP2002359978
申请日：2002-12-11
申请人： Hitachi Metals Ltd , 日立金属株式会社
发明人： HOSOE YOSHIHISA , TAKADA EIJI , MATSURU MANNISH
IPC分类号： F24H1/00 , F24H1/18
摘要： PROBLEM TO BE SOLVED: To provide a fluid heating tank device for quickly producing a certain amount of heated fluid having a sufficiently high temperature in a short time by starting a heat source machine early in the morning, e.g. SOLUTION: The fluid heating tank device using exhaust heat fluid exhausted from the heat source machine 12 for heating the fluid to be heated has a storage tank body 16 with a heated fluid inlet 18 and a heated fluid outlet 22 at the lower part and at the upper part, respectively, for storing the heated fluid. It comprises an upper heat exchanger 26 and a lower heat exchanger 28 provided in the fluid storage tank body at its upper part and at its lower part, respectively. The fluid outlet of the heat source machine is connected to one fluid port of the upper heat exchanger via a delivery pipe 30, a fluid return port of the heat source machine is connected to one fluid port of the lower heat exchanger via a return pipe 32, and the other fluid port of the upper heat exchanger is connected to the other fluid port of the lower heat exchanger via a direct coupling pipe 34. The exhaust heat fluid passes through the lower heat exchanger after passing through the upper heat exchanger. COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2003176882A CORROSION-RESISTANT TUBE FITTING 审中-公开
公开(公告)号：JP2003176882A
公开(公告)日：2003-06-27
申请号：JP2001376712
申请日：2001-12-11
申请人： HITACHI METALS LTD
发明人： ARAKAWA KOJI , MATSURU MANNISH
IPC分类号： F16L15/04 , F16L58/10
摘要： PROBLEM TO BE SOLVED: To provide a corrosion-resistant tube fitting. SOLUTION: In the tube fitting, a cylindrical body made of synthetic resin is provided on an inner surface side of a female screw of a fitting body having the female part at an end part and the tube fitting is butted to an inner surface of a connection pipe for corrosion control. A male part 22 thread-engaged with the female screw 11 of the fitting body 10 and a core 20 in which a cylindrical adhesive filling part 25 is provided at a deep side of the male screw and a projection/recessed part 23 is circumferentially and axially provided on an outer surface of the adhesive filling part 25 are formed by injection molding using a chlorine-free synthetic resin. It is characterized by that an adhesive 30 is filled in the adhesive filling part 25 of the resin core 20 to thread-fit and join to the fitting body 10. Two liquid type epoxy resin adhesive can be used as the adhesive and a polyolefin resin material can be used as a material of the resin core 20. COPYRIGHT: (C)2003,JPO

3. 发明专利

JPH10153284A CORROSION-PROOF MECHANICAL PIPE COUPLING AND CORROSION-PROOF MECHANICAL PIPE CONNECTING STRUCTURE 失效
公开(公告)号：JPH10153284A
公开(公告)日：1998-06-09
申请号：JP31162496
申请日：1996-11-22
申请人： HITACHI METALS LTD
发明人： KATO KAZUMI , NAGAI TAKUO , MATSURU MANNISH
IPC分类号： F16L19/03 , F16L19/08
摘要： PROBLEM TO BE SOLVED: To provide a corrosion-proof mechanical pipe coupling and a corrosion-proof mechanical pipe connecting structure, by which pipe inserting and connecting work can be easily performed and corrosion-proof sealing of the pipe end can be sufficiently performed, in a core housed-type and pipe slip preventing-type corrosion-proof mechanical pipe coupling. SOLUTION: This pipe coupling is provided with a mechanical connecting part 3 on the end 18 of a metallic coupling main body 1, an inner surface resin coated layer 12 is formed on the inner peripheral surface other than the end of the coupling main body 1, and a cylindrical core part 13 extending toward the end is provided. A pipe end inserting part 14 is provided between the inner surface resin coated layer 12 and the cylindrical core part 13, a clearance is formed between the outer surface 130 of the cylindrical core part 13 and the inner surface P6 of a resin lining steel pipe P to be connected, a pipe end sealing packing 21 in which a water expansion rubber 4 is mounted in the pipe end inserting part 14 and a pipe outer surface sealing packing 22 capable of being extended and contracted n the pipe axial direction is mounted between the inner surface resin coated layer 12 and the end outer surface P7 of the lining steel pipe P.

4. 发明专利

JP2000346256A JOINT FOR CORRUGATED PIPE 失效
公开(公告)号：JP2000346256A
公开(公告)日：2000-12-15
申请号：JP15617199
申请日：1999-06-03
申请人： HITACHI METALS LTD
发明人： NIBU HITOSHI , SAITO KENICHI , MATSURU MANNISH , ISHIBE FUMIKAZU
IPC分类号： F16L21/00
摘要： PROBLEM TO BE SOLVED: To stably seal by a packing by installing the packing in contact with a corrugated recess part and a connecting port inside face of a joint body and a spacer providing a packing installation part drawing the packing to the side face of the corrugated recess part and installing it therein in the corrugated recess part of a corrugated pipe. SOLUTION: A plastic corrugated pipe 10 is formed by providing an independent corrugated pipe 12 having an annular independent corrugated crest in the outside of a cylindrical pipe 11, and the corrugated pipes 10, 10 are connected by a joint 20. The joint 20 has a stopper 21 extended to the inside in the central part and tapered cylindrical connecting ports 22, 22 opened to an opening side are connected to its both sides. In connecting the corrugated pipes 10, 10, a plastic spacer 30 of a circumferentially two-split structure and a rubber packing 40 of a wedge-shaped cross section are installed on the corrugated recess 13 of a first crest in the end of each pipe 10 and each pipe 10 is inserted in the joint 20 in such a state that the side of the corrugated recess of the pipe 10 end is allowed to abut on the side face of the stopper 21.

5. 发明专利

JP2000193167A CONNECTION STRUCTURE OF INDEPENDENT CORRUGATED PIPE 失效
公开(公告)号：JP2000193167A
公开(公告)日：2000-07-14
申请号：JP36840098
申请日：1998-12-25
申请人： HITACHI METALS LTD
发明人： NIBU HITOSHI , MATSURU MANNISH , SAITO KENICHI
IPC分类号： F16L33/00 , F16L33/28
摘要： PROBLEM TO BE SOLVED: To obtain a sufficient sealing by attaching and detaching a ring-shaped rubber packing by making an inner diameter of the ring-shaped rubber packing smaller than an outer diameter of a hill of an independent corrugation, and larger than the average of the outer diameter of a bottom between the adjacent independent corrugations and an outer diameter of the hills of the independent corrugations. SOLUTION: A ring-shaped rubber packing 3 is fitted between the adjacent independent corrugations 11 separated from end parts of independent corrugated pipes 1, 1' by several hills, its outer diameter is slightly larger than the cylindrical parts 22, 22' of a pipe fitting 2 in a free condition, and an outer periphery of the ring-shaped rubber packing 3 is pressed by an inner surface of the cylindrical part 22 to be sealed when the pipe fitting 2 is externally inserted. An inner diameter of the ring-shaped rubber packing 3 is larger than the average of the outer diameter of a bottom between the adjacent independent corrugations and an outer diameter of he hills of the independent corrugations in a state fitted on an outer periphery between the adjacent independent corrugations, and is smaller than an outer diameter of the hill of the independent corrugation. Whereby the packing can be sufficiently tightened, and the sealing effect is not lowered.

6. 发明专利

JP2000146049A CONNECTING STRUCTURE FOR PIPE BY JOINT 失效
公开(公告)号：JP2000146049A
公开(公告)日：2000-05-26
申请号：JP32688198
申请日：1998-11-17
申请人： HITACHI METALS LTD , SEKISUI CHEMICAL CO LTD
发明人： NAKADA TSUMORU , MATSURU MANNISH , ONUMA HIROMI , OKUYAMA TETSUHIRO
IPC分类号： F16L21/08
摘要： PROBLEM TO BE SOLVED: To prevent coming off of a lining steel pipe from a joint by a simple structure, by forming a synthetic resin-made core in a joint main unit, and locking coming off of a pipe end, inserted in a condition interposing an adhesive between a synthetic resin layer internal peripheral surface of the pipe end and the synthetic resin-made core, by a coming off locking means. SOLUTION: In the case of connecting the mating pipe ends 4a of a lining steel pipe 4 by using a pipe joint 1, first an adhesive 15 is applied to a part of the pipe end 4a of the steel pipe 4, thereafter the part of this pipe end 4a is pressed in the joint 1 till fitting of a wedge-shaped stop ring (coming off locking means) 11 into a hook groove 12 formed in an external peripheral surface 4a of the steel pipe 4. In this way, a tapered synthetic resin layer in an internal peripheral surface of the pipe end 4a of the steel pipe 4 is fit mounted in an external peripheral surface 6a in a cylindrical part 6 of a core 3 mounted by fitting a protruding piece 8 formed in a central part external periphery of the cylindrical part 6 to a recessed part 8 formed in a joint main unit 2. The lining steel pipe 4 and the joint 2 are firmly connected together by the adhesive 15 and fitting of the stop ring 11 to the hook groove 12.

7. 发明专利

JP2000081174A MECHANICAL JOINT 失效
公开(公告)号：JP2000081174A
公开(公告)日：2000-03-21
申请号：JP24891898
申请日：1998-09-03
申请人： HITACHI METALS LTD , SEKISUI CHEMICAL CO LTD
发明人： KATO KAZUMI , NAGAI TAKUO , MATSURU MANNISH , ONUMA HIROMI , OKUYAMA TETSUHIRO
IPC分类号： F16L19/03 , F16L21/00
摘要： PROBLEM TO BE SOLVED: To dispense with the disassembling in the connection of a pipe and minimize the pipe inserting resistance by inserting a flexible seal ring to a hole at the end of a fitting for receiving a pipe to connect. SOLUTION: A pipe P to be connected inserted to a mechanical joint, and butted to a pipe end anticorrosive core 15 situated in the deep part of a fitting body 11. The pipe P passes the through-hole of an inner nut 12 and then passes the through-hole of a seal ring 13. Since the seal ring 13 is in the state where the diameter is not throttled at that time, the diameter remains in the state as it is made so that the pipe P can be inserted without resistance. The inner nut 12 is then fastened to push the seal ring 13 to a second seal ring chamber 113. At this time, the screwing of the inner nut 12 is stopped when a disc spacer 132 touches the tapered inner surface 114 of the fitting body 11 so that the inner nut 12 cannot be further fastened more, whereby the connection of the pipe P to the mechanical joint is completed.

8. 发明专利

JPH1144387A CORROSION-PROOF PIPE JOINT 失效
公开(公告)号：JPH1144387A
公开(公告)日：1999-02-16
申请号：JP20298797
申请日：1997-07-29
申请人： HITACHI METALS LTD , SEKISUI CHEMICAL CO LTD
发明人： KATO KAZUMI , NAGAI TAKUO , MATSURU MANNISH , KAGEYAMA HIDEKI , ENOMOTO SEIICHI
IPC分类号： F16L21/02 , F16L21/04 , F16L58/10
摘要： PROBLEM TO BE SOLVED: To provide an internal facing means for a seal material by improving a relief groove of the seal material of a corrosion-proof pipe joint using a fluid or semifluid seal material as the core inmost part. SOLUTION: On an end part inside surface of a pipe joint main body 1, an expansible-contractible slipping-out preventive ring 3 to fasten/fix a pipe and a pipe joint by biting into a pipe end part outside surface, is housed and arranged in a recessed groove 11, and on its inmost side, annular packing 4 to seal a part between a pipe outside surface and the pipe joint by being brought into pressure contact with the pipe end part outside surface, is housed and arranged in a recessed groove 12, a recessed groove 13 to release a seal material is also formed on its inmost side, a fluid seal material to fill up a clearance between a pipe inside surface and a cylindrical core is filled in a thin film, and is formed as a tubular seal material 5 bent in a horseshoe shape, and this is internally installed in the inmost part of a pipe end inserting part 23. When a pipe P is inserted up to the inmost part, a tube of the tubular seal material 5 tears, and the seal material 50 entering all the way up to a pipe outer periphery is housed in a relief groove 13.

9. 发明专利

JPH1144385A ATTACHMENT CORROSION-PROOF PIPE JOINT 失效
公开(公告)号：JPH1144385A
公开(公告)日：1999-02-16
申请号：JP20298697
申请日：1997-07-29
申请人： HITACHI METALS LTD , SEKISUI CHEMICAL CO LTD
发明人： KATO KAZUMI , NAGAI TAKUO , MATSURU MANNISH , UBAGAI TSUTOMU , OKUMURA MASAHIKO
IPC分类号： F16L19/08
摘要： PROBLEM TO BE SOLVED: To make packing and a core hard to be damaged by making its axes coincide with each other so that a pipe can be easily inserted. SOLUTION: On an end part inside surface of a pipe joint main body 1, an expansible/contractible slipping-out preventive ring 3 to fasten/fix a pipe and a pipe joint by biting into a pipe end part outside surface, is housed and arranged in a recessed groove 11, and on its inmost side, annular packing 4 to seal a part between a pipe outside surface and the pipe joint by being brought into pressure contact with the pipe end part outside surface, is housed and arranged in a recessed groove 12, and an O ring (a core pressure contact seal part) 5 to seal a part between a pipe inside surface and a cylindrical core 21 by being brought into pressure contact with an inside surface of a pipe P in an end part side outward position more than the annular packing 4, is also arranged on an outside surface of the cylindrical core 21.

10. 发明专利

JP2002022067A DOUBLE-LAYER CORRUGATED TUBE MADE OF POLYOLEFIN-BASED RESIN 失效
公开(公告)号：JP2002022067A
公开(公告)日：2002-01-23
申请号：JP2000204676
申请日：2000-07-06
申请人： HITACHI METALS LTD
发明人： NIBU HITOSHI , KOMIYA MICHITSUGU , MATSURU MANNISH
IPC分类号： F16L33/00 , F16L11/11 , F16L33/28
摘要： PROBLEM TO BE SOLVED: To provide a connecting structure capable of providing a high compression load and performing a sure seal without requiring so large force for the mounting or removal of a packing in a lightweight independent-wave shaped outer tube. SOLUTION: This double-layer corrugated tube comprises an outer layer having an independent wave-like corrugated shape and a cylindrical inner layer, and the valley bottom of the outer layer is fused to the inner layer. This corrugated tube is made of polyolefin-based resin so as to have a shape having the following relation: D/5.5

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