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1. 发明专利

JPS6436998A DISCHARGE STRUCTURE OF SUBMERGED MOTOR TYPE PUMP 失效
公开(公告)号：JPS6436998A
公开(公告)日：1989-02-07
申请号：JP19265187
申请日：1987-08-03
申请人： TOKYO GAS CO LTD , HITACHI LTD
发明人： AOKI NOBUO , SETA AKIO , NAKAJIMA JUNZO , WATANABE TAKAHIRO , OKADA AKIHISA
IPC分类号： F04D7/02
摘要： PURPOSE:To improve the pumping-up efficiency by installing an upper gas discharge chamber in a suction pot, gas vent hole for the communication between a motor chamber, and a gas discharge pipe for the communication between the gas discharge chamber and a suction pipe. CONSTITUTION:An upper gas discharge chamber 5 is formed in the upper part of the motor part 4 in a suction pot 1, and allowed to communicate to a motor chamber 4a through a gas vent hole 13a. The upper gas discharge chamber 5 communicates to a suction pipe 10 at the position higher than the gas vent hole 13a through a gas discharge pipe 15. During the operation, the pressurized fluid is not introduced into the motor chamber, and only the liquid in the quantity used for cooling is returned into a discharge part 3, and a portion of the rest is returned into a lower suction chamber 6, and the reduction of the pumping-up efficiency is prevented.

2. 发明专利

JPS61226593A VERTICAL SUBMERGIBLE PUMP 失效
公开(公告)号：JPS61226593A
公开(公告)日：1986-10-08
申请号：JP6360185
申请日：1985-03-29
申请人： TOKYO GAS CO LTD , HITACHI LTD
发明人： KUNITOU YASUO , TAKAHASHI TADASHI , SETA AKIO , NAKAHIRA SHIRO
IPC分类号： F04D29/046 , F04D7/02 , F04D13/00 , F04D29/04 , F04D29/049
摘要： PURPOSE:To sharply increase the life of a bearing by supporting a load in the radial direction during operation only by the journal bearings of upper and lower bearing parts and providing a supporting member which supports the weight of a rotary body only while not operating. CONSTITUTION:On the upper bearing part of a motor, a ball bearing 200 which supports the weight of a rotary body only while stopping, and a journal bearing 300 are provided on the upper end of a rotary shaft 17 while a journal bearing 400 is provided on the lower bearing part. During operation (left side in the figure; right side shows during stopping), fluid is discharged due to the rotation of an impeller 19, thrust acts upwardly in the direction of the rotary shaft 17 and the rotary body parts as a whole are slightly floated up, causing the outer race 202 of the ball bearing 200 to be separated from the top surface 301 of the recessed part of the journal bearing 300 creating a gap (b), without applying any load. Part of said fluid is introduced from the arrow direction C to a sliding surface between the journal bearings 300, 400 to carry out lubrication. Thus, all the load in the radial direction can be supported by said bearings 300, 400, while there is no wear due to solid lubrication, enabling a stable operation for a long time.

3. 发明专利

JPS6437000A BEARING DEVICE OF PUMP 失效
公开(公告)号：JPS6437000A
公开(公告)日：1989-02-07
申请号：JP19265087
申请日：1987-08-03
申请人： TOKYO GAS CO LTD , HITACHI LTD
发明人： AOKI NOBUO , SETA AKIO , NAKAJIMA JUNZO , OKADA AKIHISA , MISUMI YOJI , WATANABE TAKAHIRO
IPC分类号： F04D15/00 , F04D29/04 , F04D29/047
摘要： PURPOSE:To improve the pumping-up efficiency by using a portion of the pressurized fluid in the pressure gap part in the thrust balancing device of a shaft, as the pressurized fluid for the static pressure bearings. CONSTITUTION:The pressurized liquid injection holes 19a and 19b of the static pressure bearings 18a and 18b communicate to the intermediate pressure chamber 7 in a balance disc part. A portion of the discharged water leaks into a low pressure chamber 8 through the balance disc intermediate pressure chamber 7. A portion of the liquid which leaks from the balance disc is supplied into the static pressure bearings 18a and 18b through a communication passage 30 by the pressure difference between the intermediate pressure chamber 7 an the pressure chamber 8. Therefore, the need of supplying the discharged liquid into the static pressure bearing part is avoided, and the pumping-up efficiency can be improved.

4. 发明专利

DE69107754D1 未知
公开(公告)号：DE69107754D1
公开(公告)日：1995-04-06
申请号：DE69107754
申请日：1991-06-11
申请人： TOKYO GAS CO LTD , SUMITOMO PRECISION PROD CO
发明人： MIYATA YOSHIAKI , SETA AKIO , TSUI NOBUHIKO , KUJIRAI HIROSHI , SATOH YOUJI , SHOTANI HITONOBU , SAHARA KAZUYA , IKEDA YOSHIMICHI
IPC分类号： B01D3/10 , F17C9/02 , F24H1/00 , F24H1/34 , B01D1/00 , F22B3/04

5. 发明专利

JPH01203695A SUBMERGED MOTOR-TYPE PUMP 失效
公开(公告)号：JPH01203695A
公开(公告)日：1989-08-16
申请号：JP2750988
申请日：1988-02-10
申请人： TOKYO GAS CO LTD , HITACHI LTD
发明人： SETA AKIO , HARA TOSHIHIRO , KASAMA ICHIRO , OKADA AKIHISA , WATANABE TAKAHIRO
IPC分类号： F04D7/02 , F04D13/08
摘要： PURPOSE:To reduce the risk of operating fluid leaking to the outside by providing an instrumentation cable to be laid in a motor cable-taking out high pressure pipe of large bore while stored in an instrumentation cable-protecting pipe. CONSTITUTION:A small bore-instrumentation cable-protecting pipe 15 of non- pressure resisting material is provided in a large bore-motor cable-taking out high pressure pipe 10 of pressure resisting member. An instrumentation cable 13 is provided being laid in this protecting pipe 15. Thus enabling the necessity for providing an easily broken instrumentation cable-taking out pipe as in the past to be eliminated, a hazard of pump operating fluid in its leakage to the outside can be reduced. While because the instrumentation cable-taking out pipe disappears, a number of divided cold insulators, coating a head cover, is decreased, and maintainability improves.

6. 发明专利

DE69107754T2 未知
公开(公告)号：DE69107754T2
公开(公告)日：1995-09-14
申请号：DE69107754
申请日：1991-06-11
申请人： TOKYO GAS CO LTD , SUMITOMO PRECISION PROD CO
发明人： MIYATA YOSHIAKI , SETA AKIO , TSUI NOBUHIKO , KUJIRAI HIROSHI , SATOH YOUJI , SHOTANI HITONOBU , SAHARA KAZUYA , IKEDA YOSHIMICHI
IPC分类号： B01D3/10 , F17C9/02 , F24H1/00 , F24H1/34 , B01D1/00 , F22B3/04

7. 发明专利

ES2069824T3 未知
公开(公告)号：ES2069824T3
公开(公告)日：1995-05-16
申请号：ES91305274
申请日：1991-06-11
申请人： TOKYO GAS CO LTD , SUMITOMO PRECISION PROD CO
发明人： MIYATA YOSHIAKI , SETA AKIO , TSUI NOBUHIKO , KUJIRAI HIROSHI , SATOH YOUJI , SHOTANI HITONOBU , SAHARA KAZUYA , IKEDA YOSHIMICHI
IPC分类号： B01D3/10 , F17C9/02 , F24H1/00 , F24H1/34 , B01D1/00 , F22B3/04

8. 发明专利

JPH07228879A METHOD FOR MONITORING LNG VAPORIZATION DEVICE 失效
公开(公告)号：JPH07228879A
公开(公告)日：1995-08-29
申请号：JP2282394
申请日：1994-02-21
申请人： TOKYO GAS CO LTD
发明人： TANAKA TAKAAKI , ARAKAWA MASAHIRO , KASAMA ICHIRO , SETA AKIO
IPC分类号： C10L3/06 , F17C9/02 , G08B21/00
摘要： PURPOSE:To detect ice attaching height in a vaporization device panel and its unbalance at present and carry out future forecast. CONSTITUTION:Sea water temperature on inlet side of LNG vaporization device 1 to be monitored is measured and a water-scattering temperature near the lower header 3 of a panel 5 of the vaporization device is measured every treating unit (u) over lateral directions and the differential temperature of the sea water temperature on inlet side is calculated every each treating unit and then, the present water-scattering amount is calculated from the calculated differential temperature, a LNG flow rate, an enthalpy of LNG on inlet side and gas on outlet side and a specific heat of the scattered water and the present attached ice height is obtained from corresponding relationship between the height of an attached ice using LNG flow rate and sea water temperature as parameters and water-scattering amount or the height of attached ice predicted when LNG flow rate is increased in the present sea water temperature and water scattering amount is obtained and monitoring is carried out based on this obtained height of the attached ice.

9. 发明专利

JPH07203422A MONITOR SYSTEM FOR LNG CARBURETER PANEL 失效
公开(公告)号：JPH07203422A
公开(公告)日：1995-08-04
申请号：JP33729493
申请日：1993-12-28
申请人： TOKYO GAS CO LTD
发明人： TANAKA TAKAAKI , ARAKAWA MASAHIRO , KASAMA ICHIRO , SETA AKIO
IPC分类号： C10L3/10 , G08B21/00 , H04N5/225 , H04N7/18
摘要： PURPOSE:To detect a height of ice deposition and a resulting unbalance in a current state and to predict them by dividing a temperature picture of a carbureter panel in a longitudinal direction for each unit of strips and obtaining a discrete numeral series approximating a curve corresponding to its temperature change. CONSTITUTION:A processing means 9 divides a temperature picture of a carbureter panel 5 obtained by an infrared ray camera 7 at first into plural strip processing units W where pixels are consecutive in a longitudinal direction. Then the means 9 obtains a discrete numeral series approximating a curve C corresponding to a temperature change in the longitudinal direction based on a quantity of pixels corresponding to temperature in terms of the unit W. When ice deposition takes place onto the panel 5, the curve C changes into a curve having an inflection point I and the position of the inflection point is almost matched with the height of ice deposition point. The ice deposition height of the panel is obtained by the inflection point of each curve and a current water spray quantity is obtained based on the cross reference between the ice deposition height and the sprayed water quantity where an LNG flow amount and a sea water temperature are used for parameters. Then the predicted ice deposition height when the LNG flow amount is increased in the current water spray state is obtained from the cross reference and the ice deposition height is monitored based on this ice deposition height.

10. 发明专利

JPH05172258A GATE VALVE OF ROTARY SLIDING GLAND STRUCTURE 失效
公开(公告)号：JPH05172258A
公开(公告)日：1993-07-09
申请号：JP34143291
申请日：1991-12-24
申请人： TOKYO GAS CO LTD , HIRATA VALVE IND
发明人： SETA AKIO , KATAYAMA TATSUO , KIMOTO KENTARO , SUGIYAMA TAKAHIDE , SHINOHARA ATSUYA , SHINDO TOSHIO , ONO NOBUYUKI , TAKAHASHI HIROYUKI
IPC分类号： F16K3/18
摘要： PURPOSE:To provide a maintenance-free partitioning valve. CONSTITUTION:The top of a spindle 28 is inserted in a drive sleeve 23 whose top is blocked, and the drive sleeve 23 is rotated by a handle 25, and thereby the spindle 28 is slid up and down through the action of a feed nut 30 and a spiral feed screw 31 to perform opening and closing of a valve body 29, while sealing is accomplished with a seal packing 33 between a sleeve case 22 and the drive sleeve 23. The seal part receives only rotation, and no vertical slide is applied thereto, so that there is no factor which might cause drop of the sealing performance, and this can serve free of maintenance.

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