『Hefei flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. The overview of the Weiwu Road and Tangang Road drainage ancillary project in Hefei Future Science City is as follows: 🚧 The project includes the construction of facilities such as gate wells, grid gate wells, integrated pump wells, sewage outlet flow meter wells, and pump station system control cabinets. The planned processing capacity is 37000 tons/day, covering an area of approximately 540 square meters, and adopting an integrated pump station form. 📍 The project is located on Weiwu Road (Hehuai Road Tangang Road section) in Future Science City, Hefei City, Anhui Province. 💰 The estimated contract price for the investment amount is 33.33 million yuan, and the funding source is government investment. ⏰ Construction period and bidding arrangement - Construction period: 270 calendar days - Procurement of bidding documents: August 21, 2025 to September 10, 2025- Bid opening time: 10:00 am on September 10, 2025- Bid opening location: Bid opening room, 2nd floor, Zone A, Element Trading Market, 2588 Nanjing Road, Binhu New District, Hefei City (using the "cloud bid opening hall" method) 📝 The bidding requirements require a third level or above qualification for general contracting of municipal public works construction in vertical sensitive areas. The project manager must hold a second level or above qualification as a municipal professional constructor and submit a performance certificate of similar projects worth more than 17 million yuan. Accept consortium bidding (with no more than 2 members). 🔍 Please refer to the official documents for specific bidding conditions. It is recommended to obtain the latest information through the Hefei Public Resource Trading Platform. 2. Working principle of fiber_600x400.jpg)
Principle: When a non streamline body is placed in a fluid, under certain conditions, a regular vortex will be generated downstream of the fluid flow.
. This vortex will alternately leave on both sides of the non streamline body. When each vortex is generated and cascades down, a lateral force is generated on the object wall. In this way, the vortex generated by the cycle will subject the object to one cycle of pressure. If an object has elasticity, it will produce vibration, and the vibration frequency is approximately proportional to the flow velocity. In the formula f=sv/d, v represents the flow velocity of the fluid; D - the lateral dimension of the object relative to the direction of the liquid flow; S - a dimensionless constant related to fluids. Therefore, by detecting the vibration frequency of the object, the flow velocity of the fluid can be measured. The fiber optic vortex flowmeter is made based on this principle. There is a taut multimode optical fiber installed in the middle of the transverse fluid pipeline. When the fluid flows, the optical fiber vibrates, and its vibration frequency is approximately proportional to the flow velocity. Due to the use of multimode fiber, when a coherent light source (such as a laser) is used as the light source, its output spot is the result of mode interference. When the optical fiber is fixed, the output spot pattern is stable. When the optical fiber vibrates, the output light spot also moves. For a small detector located at a fixed position in the light spot, the movement of the light spot pattern is reflected as a change in the output light intensity received by the detector. By using spectrum analysis, the vibration frequency of the optical fi
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