Method for measuring flow concentration of turbid water, and priming device
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A technology for muddy water and concentration, which is applied in the field of measuring muddy water flow concentration and water diversion devices, can solve the problems of not being able to represent the concentration of pressurized pipelines, lack of measurement methods and equipment, etc., and achieve the effect of high-precision measurement
Active Publication Date: 2014-01-22
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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[0005] As far as the measurement of sediment concentration is concerned, there are still two problems to be solved urgently: one is the volume concentration C V Due to different measurement sections, the volume concentration C of any section V cannot represent the concentration in the entire pressurized pipeline; the second is that although the flow concentration C Q It can keep all cross-sections equal, and can also represent the concentration in the pressurized pipeline, but there is no measurement method and equipment at present
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[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0034] Such as figure 1 As shown, the water diversion device of the present invention includes a water diversion pipe 1 , a flange 2 , a screw rod 3 , a scale disc 4 , a positioning disc 5 and a valve 6 .
[0035] Wherein, the water diversion pipe 1 is composed of a water diversion elbow 7 and a water diversion straight pipe 8. The water diversion elbow 7 and the water diversion straight pipe 8 are perpendicular to each other, and arc transitions are adopted at the corners. The flange 2 is sleeved on the water diversion straight pipe 8, and an O-shaped sealing ring 9 is arranged between the flange 2 and the water diversion straight pipe 8 for sealing to prevent muddy water from seeping out. The three screw rods 3 are evenly welded on the lower surface of the flange 2 located on the periphery of the water diversion straight pipe 8 along the circumfere...
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Abstract
The invention relates to a method for measuring flow concentration of turbid water, and a priming device. The method comprises the following steps: (1) in a preparation stage, installing the priming device, and acquiring sediment density pS; (2) in a measurement stage, firstly, adjusting the depth and the angles of priming pipes, turning on the priming device for draining, and connecting into a volume, secondly, weighing the to-be-measured turbid water to obtain the mass M, and measuring the volume V of the to-be-measured turbid water, thirdly, calculating the density p of the turbid water and the density pW of clear water, wherein p is equal to M / V, and pW is equal to MW / VW, fourthly, calculating sediment volume concentration, and finally, calculating the flow concentration CQ which is equal to (QS.t) / (Q.t) or QS / Q or NV. The priming device comprises a priming elbow pipe, a flange arranged on a priming straight pipe in a sleeved manner, three screws evenly fixed on the lower surface of the flange in the circumferential direction, the priming straight pipe arranged below the flange in a sleeved manner, a graduation disc on the three screws, a positioning disc fixed on the priming straight pipe and arranged on the three screws in a sleeved manner, and a valve on the tail end of the priming straight pipe. The method can be widely applied to the measurement on the flow concentration of turbid water.
Description
technical field [0001] The invention relates to a measuring method and device, in particular to a method for measuring the flow concentration of muddy water and a water diversion device. Background technique [0002] flow concentration C Q Refers to the flow Q of solid particles such as sediment in muddy water (hereinafter collectively referred to as sediment) S and the ratio of the total flow Q of muddy water, and its volume concentration C V (sediment volume V S 'to the total volume of muddy water V') and the mass concentration C M (sediment quality M S It is similar to the ratio of the total mass of muddy water M), but the concept is different. [0003] In a pressurized flow, the area of a straight pipe with a length L is A, assuming that the flow area occupied by sediment is A S , then the volume concentration C V =V S ' / V'=A S ·L / (A·L)=A S / A, that is, the volume concentration C V In fact, it reflects the sediment flow area A S and the ratio of the total a...
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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06G01F1/74
Inventor 徐洪泉王万鹏张海平陆力李铁友廖翠林孟晓超刘娟马素萍张建光范小付
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES