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Coal slurry pipe flow Traffic Measurement

A F4 () (19) where dirty = Re / (1 +) Comprehensive Reynolds said Bingham. Based on the above analysis. We use a given venturi above the concentration of coal-water slurry flow measurement tests carried out (the standard test port electromagnetic flowmeter flow, pressure △ P diaphragm differential pressure gage with a self-made). Reynolds number flow coefficient changes with the comprehensive experimental data shown in Figure 2. In the order on the basis of experimental data. Regression method using available empirical formula: A a A (20) where A, mouth, ground testing to determine the constants. Reynolds number of the trial in a 30-656 range Shan, A = 1 corresponds to one by one 口 = 1.6622c 0.3834 Eq (2O) into (9). Have a population [1 tile l, 6622J. (Ferret) type () and experimental values of the calculated relative error between the generally about l. The largest integer less than 5 errors. By the type (2O) known. Flow coefficient with the increase in consolidated Re-Reynolds number (the number of ships Binhanleinuo increase or decrease Binhan He's the number of tie) increase. It is worth noting that the type (2O) is obtained under the experimental conditions, outside the scope of application of experimental accuracy needs further experimental verification. Conclusion 1 CWS 5, asked a long-shear failure of its structure is in equilibrium with the recovery after. Can be used as a kind of uniform, in a stable state of pure viscous fluid handling r1. 2 measurement with Venturi default constant flow of coal slurry pipe flow is feasible. The results show that the test section of the Venturi tube pressure △ P with the amount of coal-water slurry flow port thank the relation between the mouth of a 3 on a given cane z geometry Venturi tube. CWS flow measuring the flow coefficient can be organized into the following general criterion equation port = (Re, tle. \OK, that is, = F ・ () = A-B derived from this empirical formula with high accuracy. 搴 Reference lz.nJ ugly b k}. LEFund., 1867,6 (3)} D.445-4542o . Io | | 1.0.an ∞ b.nolsI} .. Toaret.P. small boat br.6.1nt.Syml ~ OnCaSlmzyComb, andh'O ~ lando.1984.266-2813 Jiaqing Xian, Zhang Zhongmin, pore classes. s second end regions of China Peng Academic homes argumentative strength. Hangzhou, a November 1990 tpp.80--8Z4 Mao Lihua, Wang Shijun. CWS Technical Engineers. base the country's first coal-water slurry technology seminars Taiwan t1987 Selected Papers on Oct. 1, pp.13 move a Dian Yao Volume 10 (3) Thermal Power Engineering} 2 cylindrical magnetic speed sensor voltage characteristics and trial (Harbin Marine Boiler Turbine Institute) Keyword Sensor EMF amplitude characteristics of the system to do debugging DOI TM930.1241 Foreword magnetic speed sensor structure principle (Figure 1) consisting of permanent magnets in the magnetic circuit,[link widoczny dla zalogowanych], if the reluctance to change (such as air gap) in size, the magnetic flux with of the change. When magnetic flux is mutated, the magnetic circuit of the induction coil induces a certain level of potential pulse, the pulse frequency equal to the reluctance potential changes in frequency. magnetoelectric coupled with tachometer speed sensor can be directly read out speed, cylindrical sensors can detect magnetic materials, gear, wheel, disc wheels, and the rotor speed. Figure 1 when the gear shaft driven by the rotation of the measured t the top of the tooth and the tooth through the valley of alternative sensors, the sensor pole shoe ends with T The question of the air gap tooth alternately, causing the reluctance of alternating magnetic sensors, so that the alternating magnetic flux through the coil. coil to induce a force,[link widoczny dla zalogowanych], that is, the output signal, signal frequency,[link widoczny dla zalogowanych], a! (Hz). known f and Z ・ Tl is proportional to,[link widoczny dla zalogowanych], or by measuring the signal with a speed meter to determine the frequency of the measured speed. shows the sensor signal strength with the use of sensors on, so we first look at the voltage characteristics of the sensor in order to correct used to obtain better results. 2 cylindrical magnetic characteristics of range sensors EMF sensor magnetic cylinder (hereinafter referred to as cylindrical sensors) of the EMF amplitude characteristics [1] described the \principle is similar,[link widoczny dla zalogowanych], but the difference is \equivalent magnetic circuit reluctance to be small. Cylindrical sensors at the test bench into a acridine Received l0 ∞ l5 Bong text of a female aid workers 35150030 Contact Chen Yanfen mail Harbin 77__4 electric Ling Zhang
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