Liquid level buoy for measuring viscous liquid interface
A viscous liquid, interface technology, applied in the buoy liquid level indicator and other directions, can solve the problems of not being able to reflect the liquid level change in time, the buoy response sensitivity dropping, and the liquid level sensor failure, etc. Small friction coefficient, the effect of reducing friction
Pending Publication Date: 2021-11-05
PIPECHINA SOUTH CHINA CO +1
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Problems solved by technology
The existing float design causes the force F to be the largest in liquids of the same viscosity
The result in practical application is that the response sensitivity of the buoy decreases, and it cannot reflect the change of the liquid level in time.
What is more common is that the float ball is completely stuck to the measuring rod due to the excessive force F, and the liquid level sensor completely fails, which will cause a lot of losses as a whole
Method used
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[0022] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the embodiments of the present invention will be clearly and completely described below in conjunction with the specific implementation methods involved in the accompanying drawings. Apparently, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, such as embodiments that only change the usage without changing the basic principles involved in the claims, all belong to the protection scope of the present invention.
[0023] The liquid level buoy is symmetrical about the center as a whole, such as Figure 1-Figure 3 Shown, the present invention comprises homogeneous cavity 1 and annular magnet 3; One entity, the center of the homogeneous cavity 1 is provided with a central hole 4, along the r...
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The invention discloses a liquid level buoy for measuring a viscous liquid interface. The liquid level buoy is in central symmetry on the whole and comprises a homogeneous cavity and an annular magnet. The homogeneous cavity is any entity in a three-dimensional Euclidean geometric space or a three-dimensional Robarkowski geometric space or a three-dimensional Riemannian geometric space, a center hole is formed in the center of the homogeneous cavity, and a measuring rod of a liquid level sensor penetrates through the center hole to enable the liquid level buoy to be coaxially arranged on the measuring rod in a sleeving mode; and a homogeneous annular cavity is formed in the homogeneous cavity, and the annular magnet is installed in the homogeneous annular cavity in an embedded mode. The thickness of the edge of the central hole of the buoy is reduced, so that the overlapping area between the buoy and the measuring rod is reduced, the viscous force is reduced when the buoy moves relative to the measuring rod in high-viscosity liquid, and the movement is free and smooth. The buoy is provided with the homogeneous cavity, so that the buoyancy can be increased; and the annular magnet is placed at the center hole, so that a stable magnetic field can be provided for the liquid level sensor.
Description
technical field [0001] The invention belongs to a liquid level buoy in the technical field of petroleum and natural gas, and in particular relates to a liquid level buoy for measuring the interface of viscous liquid. Background technique [0002] Viscosity is a physical and chemical property of matter, which is defined as a pair of parallel plates with an area A and a distance of dr, and a liquid is filled between the plates; now a thrust F is applied to the upper plate to make it produce a speed change. force. Due to the effect of viscosity, the object is subjected to frictional resistance and pressure differential resistance when moving in the fluid, resulting in loss of mechanical energy. Due to the viscosity of the liquid, this force is transmitted layer by layer, and each layer of liquid also moves accordingly, forming a velocity gradient du / dr, which is called the shear rate, expressed in r'. F / A is called the shear stress, expressed in τ. The relationship between s...
Claims
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IPC IPC(8): G01F23/76
CPCG01F23/76
Inventor 田中山杨昌群牛道东李育特朱航宇唐志峰陈会明
Owner PIPECHINA SOUTH CHINA CO