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1. 发明专利

JP2537448B2 失效
公开(公告)号：JP2537448B2
公开(公告)日：1996-09-25
申请号：JP9040892
申请日：1992-02-27
申请人： NISHIHARA EISEI KOGYOSHO KK
发明人： YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU
IPC分类号： C23F11/18 , B01D53/32 , B01D53/38 , C02F1/46 , C23F15/00

2. 发明专利

JPH02133588A METHOD AND EQUIPMENT FOR PREVENTING CORROSION OF LINING PIPELINE SYSTEM 失效
公开(公告)号：JPH02133588A
公开(公告)日：1990-05-22
申请号：JP28512788
申请日：1988-11-11
申请人： NISHIHARA EISEI KOGYOSHO KK , SEKISUI CHEMICAL CO LTD
发明人： YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU , MATSUNO TETSUAKI , KUSANO TAKASHI
IPC分类号： C23F13/00 , C23F13/20 , F16L58/00
摘要： PURPOSE:To prevent generation of reddish water by keeping a corrosion protective anode provided to the inside of a pipe joint at high potential and allowing current larger than corrosion-protective current to flow and forming a corrosion-protecting film on the exposed metallic surface and lowering the anodic potential while keeping this current value. CONSTITUTION:The corrosion-protective anodes 11 are formed to the respective pipe joints 8, 9, 10. When water is introduced, voltage of a DC power source 12 is set at high voltage and current larger than corrosion-protective current is allowed to flow between the anodes 11 and the exposed metallic parts of the insides of the pipe joints 8-10. Thereby the corrosion-protective films are formed on the exposed metallic parts of a pipe 7 and the pipe joints 8-10. When the current value allowed to flow is lowered by formation of the corrosion-protective films, the voltage of DC current 12 is set at the voltage of a lower side and while the current larger than corrosion- protective current is kept, corrosion protection is performed. Secure corrosion protection is performed by the films formed in an initial statge and also the corrosion- protective region is maintained at low potential and corrosion resulting from nonuniformity of potential is avoided.

3. 发明专利

JPH0755086A LINING PIPE FORMED BY WELDING A PLURALITY OF LINING PIPES LINED BY ORGANIC MATERIAL 失效
公开(公告)号：JPH0755086A
公开(公告)日：1995-03-03
申请号：JP9782994
申请日：1994-03-31
申请人： NISHIHARA EISEI KOGYOSHO KK
发明人： ASAKURA SHUKUJI , YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU
IPC分类号： F16L13/02 , F16L58/02 , F16L58/18
摘要： PURPOSE:To simplify corrosion resistance treatment work, so as to attempt improved efficiency of piping work by compressing a rubber-made cylindrical body by means of screws srewed into fastening holes of a stopcock body, and liquid-sealing between a penetration wall of a pipe joint and the rubber-made cylinderical body and between an anode electrode and the rubber-made cylindrical body. CONSTITUTION:Before welding, lining layers 6, 7 are removed from pipe end surfaces 8, 9 of lining pipes 4, 5 over the fixed ranges 10, 11. A stopcock body 16 is provided with a short cylindrical body 17 made of electrical insulating materials such as rubber and discs 18, 19 to be attached on the upper and lower ends of the cylindrical body 17, and made of corrosion resistant materials such as stainless steel. Fastening screw holes 20, 21 and attaching holes 22 of the anode electrode 15 are formed on these discs. The cylindrical body 17 is inserted into a penetration 14 of a welded pipe joint wall 1 and axially compressed by screwing the screws 23, 24, and expanded in the direction of an outside bent wall 13 of the welded pipe joint 1, so as to be fixed to the welded pipe joint wall 13.

4. 发明专利

JPH0581676B2 失效
公开(公告)号：JPH0581676B2
公开(公告)日：1993-11-15
申请号：JP28512788
申请日：1988-11-11
申请人： NISHIHARA EISEI KOGYOSHO KK , SEKISUI CHEMICAL CO LTD
发明人： YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU , MATSUNO TETSUAKI , KUSANO TAKASHI
IPC分类号： C23F13/00 , C23F13/20 , F16L58/00

5. 发明专利

JPS6480632A DRAIN VENTILATION PIPING FACILITY 失效
公开(公告)号：JPS6480632A
公开(公告)日：1989-03-27
申请号：JP23703987
申请日：1987-09-21
申请人： NISHIHARA EISEI KOGYOSHO KK
发明人： KITANI FUMIKI , YAMADA KENJI , YAMAZAKI KAZUO , AOKI KAZUYOSHI , OBARA SHINICHI
IPC分类号： E03C1/122 , E03C1/28
摘要： PURPOSE: To make air supply and exhaust easier by providing an opening for atmospheric communicating pipe at a height higher than at least one connecting point among a combined air vent pipe and a vertical drain pipe on the pipe wall for vertical vent pipe with the bottom end connected to the vertical drain pipe. CONSTITUTION: At a rising portion of a lateral drain branch pipe 2' on each story, extended top vent pipe 4 communicating to the atmosphere is connected. Also, the opening portion 3' as boundary, the upper end portion of a vertical vent pipe 3 comprising an upper vertical vent pipe 3a and a lower vertical vent pipe is connected to the pipe 4 and also communicated respectively to each branch pipe 2 through a cross type joint. Moreover, at the opening portion 3', a vent pipe 11 for opening to the atmosphere is connected through the cross type joint. And air intake and exhaust are performed through the pipe 4 and the opening to the atmosphere through the pipe 11 is performed also on a middle story thereby improving air circulation inside the pipe 3.

6. 发明专利

JPS6475693A METHOD FOR STOPPING RED WATER 失效
公开(公告)号：JPS6475693A
公开(公告)日：1989-03-22
申请号：JP23399987
申请日：1987-09-18
申请人： NISHIHARA EISEI KOGYOSHO KK
发明人： YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU
IPC分类号： C23F13/00 , F16L58/00
摘要： PURPOSE:To stop red water without renewing piping equipment by inserting an anode electrode which is electrically insulated from a steel pipe into the steel pipe, connecting a cathode to the steel pipe and applying voltage between the two electrodes. CONSTITUTION:The water is removed from the entire part of the piping equipment 1 when the red water is generated in said equipment. A faucet 3 is then removed and one juncture 5 of a branch joint 4 is mounted to the juncture 6 of the steel pipe 2 and the juncture 8 of the faucet 3 is mounted to the other juncture 7. The anode electrode wire 10 is inserted from a branch port 9 of the branch joint 4 and is inserted over the entire length of the steel pipe 2 where rust is formed. An exposed side 11 of the anode electrode wire 10 is inserted into a holed rubber plug 12. This holed plug 12 is fitted into the branch port 9 of the branch joint 4. The plug 12 and the wire 10 are fixed to the port 9. An end part 15 of the wire 10 is connected to an anode side connecting terminal 17 of a constant voltage power supply 16 and the cathode side 18 of the constant voltage power supply 16 is connected to a branch joint wall 19. The red water is stopped when city water is supplied in this state to the piping equipment 1.

7. 发明专利

JPH0581675B2 失效
公开(公告)号：JPH0581675B2
公开(公告)日：1993-11-15
申请号：JP31403086
申请日：1986-12-27
申请人： NISHIHARA EISEI KOGYOSHO KK
发明人： ASAKURA SHUKUJI , YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU
IPC分类号： C23F13/00 , C23F13/20 , F16L58/00

8. 发明专利

JPH0525954B2 失效
公开(公告)号：JPH0525954B2
公开(公告)日：1993-04-14
申请号：JP4895590
申请日：1990-02-28
申请人： NISHIHARA EISEI KOGYOSHO KK , SEKISUI KAGAKU KOGYO KK
发明人： YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU , MATSUNO TETSUAKI , KUSANO TAKASHI
IPC分类号： C23F13/00 , C23F13/06

9. 发明专利

JPH02258988A CORROSION-PREVENTIVE ELECTRODE MOUNTING STRUCTURE 失效
公开(公告)号：JPH02258988A
公开(公告)日：1990-10-19
申请号：JP8089989
申请日：1989-03-30
申请人： SEKISUI CHEMICAL CO LTD , NISHIHARA EISEI KOGYOSHO KK
发明人： KUSANO TAKASHI , MATSUNO TETSUAKI , OSAWA KOZO , ONISHI KUNIAKI , YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU
IPC分类号： C23F13/00
摘要： PURPOSE:To obtain the mounting structure capable of stably securing good sealing property over a long period by compression-deforming the large-diameter part of an elastic insulating member to be inserted into an electrode with the tapered pressing face of a holding member and the tapered pressing face of a pressing member. CONSTITUTION:The electrode 20 is inserted into the insertion hole 51 of the elastic insulating member 50 with its meandering part 21 extended from the member 50 to a specified length of fix the electrode 20 to a pipe fitting main body 11. Under such conditions, the supporting part 53 of the member 50 is inserted into the inner peripheral surface 12c of the holding part 12, and the tapered face 52b of the large-diameter part 52 of the member 50 is opposed to the inside of the holding face 12b. The pressing member 40 is then mounted on the other supporting part 54 of the member 50, and a male screw part 41 provided on its one end is screwed into the female screw part 12a of the holding part 12. The member 40 is then forcibly screwed into the holding part 12, and the holding face 12b and the tapered pressing face 44 of the member 40 are pressed respectively on the tapered faces 52b and 52c on the side surface of the large-diameter part 52 of the member 50. Finally, the gap between the holding face 12b and the tapered face 52b of the member 50 and the gap between the insertion hole 51 of the member 50 and the electrode 20 are sealed.

10. 发明专利

JPH03253588A CORROSION INHIBITION METHOD AND DEVICE OF LINING WATER PIPING SYSTEM 失效
公开(公告)号：JPH03253588A
公开(公告)日：1991-11-12
申请号：JP4895590
申请日：1990-02-28
申请人： NISHIHARA EISEI KOGYOSHO KK , SEKISUI CHEMICAL CO LTD
发明人： YAMADA KENJI , YAMAZAKI KAZUO , ISODA SUSUMU , MATSUNO TETSUAKI , KUSANO TAKASHI
IPC分类号： C23F13/00 , C23F13/06
摘要： PURPOSE:To easily inhibit corrosion of a lining water piping system and to prevent the generation of reddish water by passing a current larger than a corrosion inhibitive current between a corrosion resistance anode provided in the pipe joint of the above-mentioned piping system and a metal exposed surface, then passing the current lower than this current. CONSTITUTION:A lifting pipeline 4 and a water feed pipeline 6 constituted by connecting plural lining pipes 7 with pipe joints, such as sockets 8, elbows 9 and tees 10, are connected to a lifting pump 2, a water storage tank 3, etc. The corrosion resistance anode 11 is disposed in an insulated and liquid tight state into the above-mentioned pipe joints of the water distributing system 1 consisting of the above-mentioned lining piping system. This anode 11 is preferably disposed at every pipe joint. The current is then passed between the above-mentioned anode 11 and the metal exposed surface in the pipe joints from a constant current source. The specified current larger than the corrosion inhibitive current is passed at this time to form the corrosion inhibitive film on the above-mentioned metal exposed surface. The specified current larger than the corrosion inhibitive current and lower than the current in the above- mentioned corrosion inhibitive film forming stage is passed throughout at the time when the water flows and at the time when the water stops to maintain the above-mentioned corrosion inhibitive film. The corrosion of the lining water piping system is inhibited in this way and the generation of the reddish water is efficiently prevented.

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