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61. 发明专利

JPS55132911A FLOW RATE MEASURING APPARATUS 失效
公开(公告)号：JPS55132911A
公开(公告)日：1980-10-16
申请号：JP4076179
申请日：1979-04-04
申请人： TOKYO SHIBAURA ELECTRIC CO , NIPPON ATOMIC IND GROUP CO
发明人： MIYAKE TOSHIO , KONISHI AKIRA
IPC分类号： G01F1/704 , G01P5/18
摘要： PURPOSE:To measure the flow rate of fluid containing two kinds of radioactive nuclides with simple construction by providing radiation transmission walls to apparatus and piping. CONSTITUTION:The walls which radiate only the radiations to the outside are provided to the spaced measurement points A, B of the main steam pipe 10. In order to make the measurement positions distinct, slits 22 are installed and the radiation detectors 20 covered with shield vessels 21 are provided in opposition thereto. Then, the radiations from two kinds of the radiation nuclides contained in the main steam are radiated from the measurement points A, B and are detected by the detectors 20. They are then measured in the radiation measuring circuit 30 provided with a high voltage power source device 31, pulse height analyzer 33 and counters 34, 35. Thence, there are converted to the relative decay numbers of the radiations by using energy calibration constants in an arithmetic circuit 40, are then operated of steam flow rate by using the steam density value calculated from a pressure gauge 11, thermometer 12 and density meter 13 and are displayed in a flow display device 41. Hence, the required measurement is made possible even without providing any nozzle ventury, orifice and differential pressure detecting instrumentation pipe to the main steam pipe 10.

62. 发明专利

JPS5534900B2 失效
公开(公告)号：JPS5534900B2
公开(公告)日：1980-09-10
申请号：JP5564476
申请日：1976-05-14
IPC分类号： G01P3/50 , G01P3/66 , G01P5/18 , G01P21/02 , G08G1/052

63. 发明专利

JPS5510034B2 失效
公开(公告)号：JPS5510034B2
公开(公告)日：1980-03-13
申请号：JP12581574
申请日：1974-10-31
IPC分类号： G01P5/18 , E02D1/02 , G01P5/10 , G01P13/04 , G01V9/02 , H02G9/00

64. 发明专利

JPS54128762A FLOW SPEED AND RATE METER 失效
公开(公告)号：JPS54128762A
公开(公告)日：1979-10-05
申请号：JP3820978
申请日：1978-03-29
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , SHIBATA NORITAKE , MATSUMOTO TAKAHARU
IPC分类号： G01P5/00 , G01F1/66 , G01P3/50 , G01P5/18 , G01S11/00
摘要： PURPOSE:To meter the flow speed or the like at an excellent S/N ratio without preventing the flow of a fluid to be metered by differentiating the detected output of a flow speed or the like, which is detected with the use of ultrasonic or electromagentic wave transmitting and receiving elements arranged equidistantly so that the unnecessary components are offset whereas the necessary components are emphasized. CONSTITUTION:Ultrasonic wave received signals, which have their phases modulation in accordance with the flow speed through a pipe 1, are detected by ultrasonic transmitting and receiving elements 21 to 28 and 31 to 38 which are arranged equidistantly at a right angle with respect to the pipe 1. These detected signals are differentially applied to a phase difference demodulating circuits 51 to 54 so that the demodulated signals have their perpendicular speed components of the fluid of a period of d/N(N:0, 1, 2 and so on) offset by the spacial filter effects resulting from the elements 21 to 28 and 31 to 38 and have their perpendicular speed components of a period of d/(N + 1/2) emphasized. Thus, at the trough of the spectrum of the modulated signals, the perpendicular speed components are offset, whereas at the crese of the same the components are emphasized so that the components corresponding to the flow speed or rate are taken up by a signal processing circuit 7 through an adding circuit 60 without prohibiting the flow of the flow. Thus, it is possible to accomplish the metering operation at an excellent S/N ratio.

65. 发明专利

JPS5422314B2 失效
公开(公告)号：JPS5422314B2
公开(公告)日：1979-08-06
申请号：JP10332674
申请日：1974-09-06
IPC分类号： G01P5/18 , G01P5/10

66. 发明专利

JPS5451875A TWO WIRE TYPE CORRELATIONCURRENTTFLOW RATE MEASURING APPARATUS 失效
公开(公告)号：JPS5451875A
公开(公告)日：1979-04-24
申请号：JP11835277
申请日：1977-09-30
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , SHIBATA NORITAKE
IPC分类号： G01F1/712 , G01P3/80 , G01P5/18 , G01P5/22 , G08C19/02
摘要： PURPOSE:To obtain a correlation current-flow rate measuring apparatus of a simple constitution by connecting a differential signal operating circuit, a current control element, etc. to the two-wire transmission lines connecting the detecting end side and receiving end side. CONSTITUTION:An oscillator 4 which applies driving signals to ultrasonic transmitters 21, 22, a circuit 6 which is inputted with the outputs of the demodulators 51, 52 connected to ultrasonic receivers 31, 32 and operates the differences in both signals, a current control element 7 and a constant voltage element 9 are connected to the detecting end side of a two-wire transmission line 8 and a d.c. power source E, a resistance RL and an autocorrelator 10 are connected to the receiving end side. Then, the ultrasonic waves which have been demodulated by noise type flows such as intrinsic fluctuations, small vortexes, etc. contained in the fluid flowing in the piping 1 and received in the transmitters 31, 32 are demodulated and are then inputted as differential signals to the current control element 7, by which the load current R flowing in the transmission line 8 is controlled and the controlled load current I is applied to the autocorrelator 10, whereby the velocity of flow of the fluid being measured is calculated.

67. 发明专利

JPS5451874A VELOCITY DETECTOR 失效
公开(公告)号：JPS5451874A
公开(公告)日：1979-04-24
申请号：JP11835177
申请日：1977-09-30
申请人： YOKOGAWA ELECTRIC WORKS LTD
发明人： KURITA YOSHIO , SHIBATA NORITAKE
IPC分类号： G01P3/80 , G01P5/18 , G01P5/22 , G01S15/50 , G01S15/58
摘要： PURPOSE:To perform non-contact velocity detection of moving objects by detecting the noise-type signals obtainable from the moving objects at two positions and performing specific processing. CONSTITUTION:Two sets of ultrasonic transmitters-receivers 21-31, 22-32 are disposed in the lengthwise direction of piping 1 in which a moving object such as fluid or the like flows. These are then connected to a frequency detection circuit 8 via demodulators 51, 52 arithmetic circuit 6 and spectrum analyzer 7. Then, the noise type signals obtainable through movement of the moving fluid such as of noises owing to vortexes contained in the moving object such as fluid or the like, noises owing to undulations and densities of the object surface, etc. are detected by way of ultrasonic waves at two positions in the moving direction, After demodulation, their differences or sums are operated and the frequency spectra of the difference or sum signals are obtained, then through frequency detection the velocities of the moving object are meaured.

68. 发明专利

JPS533936B2 失效
公开(公告)号：JPS533936B2
公开(公告)日：1978-02-13
申请号：JP13844073
申请日：1973-12-05
IPC分类号： G01F1/64 , G01P5/08 , G01P5/18 , G01P13/00

69. 发明专利

JPS52102074A CORRELATION TYPE FLOW METER 失效
公开(公告)号：JPS52102074A
公开(公告)日：1977-08-26
申请号：JP1918076
申请日：1976-02-24
申请人： TOKYO KEIKI KK
发明人： ITOU KIMITSUGU
IPC分类号： G01P5/22 , G01P5/18

70. 实用新型

JPS5224540Y2 失效
公开(公告)号：JPS5224540Y2
公开(公告)日：1977-06-03
申请号：JP11917772
申请日：1972-10-14
IPC分类号： G01P5/18

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