CN201107083Y - Contrast type liquid level measuring device - Google Patents

Abstract

The utility model discloses a contrast formula level measurement device, it comprises container, liquid, sensor A and sensor B. Liquid with the depth of H is stored in the inner cavity of the container, and the sensor A and the sensor B are fixedly connected to the outer wall of the bottom of the container at a vertical interval K. The utility model provides a two sensors are pressure sensor, and the pressure that sensor institute measured the pressure is directly proportional with the liquid depth of its position, and the ratio of the pressure that two sensors were surveyed respectively is exactly the ratio of the position liquid depth, holds liquid height H in the container and measures irrelevant with density. The utility model discloses simple structure, manufacturing are easy, measurement process simplifies, and the measuring result accuracy nature is high, is particularly suitable for doing the accurate measurement that holds the liquid stock in the large container.

Description

Contrast formula liquid level emasuring device

Technical field

The utility model relates to a kind of liquid level emasuring device, and specifically, the utility model relates to the device that holds liquid stock in a kind of accurate measuring vessel.

Background technology

Hold liquid stock in the measurement tun and adopt level gauging usually.Conventional level gauging adopts static pressure method, promptly obtains the liquid level value with the static pressure that is measured divided by fluid to be measured severe value, and liquid severe is the product of its density and acceleration of gravity.Utilize liquid level emasuring device that the static pressure method principle makes can be objective, measuring liquid level reliably.But the liquid level emasuring device measuring accuracy of prior art is directly relevant with the fluid density value, and the fluid density value also will be measured the fluid density value with pressure and temperature variation during measuring liquid level, otherwise, to survey liquid level value accuracy not high enough.

The utility model content

The utility model is primarily aimed at the deficiency of the direct liquid body density value of prior art level gauging precision influence, propose a kind of simple in structure, measure convenient, metering accurately, need not to carry out the contrast formula liquid level emasuring device that density value is measured during level gauging.

The utility model is achieved through the following technical solutions technical goal.

Contrast formula liquid level emasuring device, it is made up of container, liquid, sensors A and sensor B.Hold the liquid that the H degree of depth is arranged in the described container intracavity.Its improvements are: fixedly connected sensors A of perpendicular separation and sensor B on the described container bottom outer wall.Described sensors A is located at the below of sensor B.

Two sensors that are in container bottom in the said structure are a kind of pressure transducers, sensor and sensor B upright position differ K, the pressure measurement of two sensor institutes is directly proportional with the liquid depth of its position by force, the ratio of the pressure that two sensors record respectively is exactly the ratio of present position liquid depth, have nothing to do with fluid density, hold the liquid level of liquid in the container $H=\left[\frac{P_A}{P_A-P_B}\right]\·K.$

The utility model compared with prior art, its good effect is:

1, simple in structure, easy to manufacture;

2, level gauging and fluid density are irrelevant, and measuring process is simplified, measurement result accuracy height.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Contrast formula liquid level emasuring device shown in the drawings, it is made up of container 2, liquid 1, sensor B3 and sensors A 4.Holding in described container 2 inner chambers has liquid 1, and its liquid level is H.Fixedly connected sensor B3 of perpendicular separation and sensors A 4 on container 2 bottom outer wall, sensors A 4 are in the below, and sensor B3 is in the top of sensors A 4.Described sensors A 4 or sensor B3 are pressure transducer.The be separated by vertical range K of sensors A 4 of sensor B3 is 500mm in the present embodiment, and sensors A 4 records pressure P _ABe 0.1MPa, sensor B 3 records pressure P _BBe 0.09MPa.Because sensors A 4 or the pressure measurement of sensor B3 institute are directly proportional with the liquid depth of its position by force, sensors A 4 is exactly the ratio of its present position liquid depth with the ratio of the pressure of sensor B3, and is irrelevant with fluid density, measures the liquid level that holds liquid in the container:

$H=\left[\frac{P_A}{P_A-P_B}\right]\·K=\left[\frac{0.1}{0.1-0.09}\right]\×500=5000\left(\mathrm{mm}\right)$

Claims (3)

1, a kind of contrast formula liquid level emasuring device, it comprises container (2), liquid (1), sensor B (3) and sensors A (4) composition; Hold the liquid (1) that the H degree of depth is arranged in described container (2) inner chamber; It is characterized in that: fixedly connected sensor B of perpendicular separation (3) and sensors A (4) on described container (2) bottom outer wall; Described sensors A (4) is located at the below of sensor B (3).

2, contrast formula liquid level emasuring device according to claim 1 is characterized in that: described sensor B (3) or sensors A (4) are pressure transducer.

3, contrast formula liquid level emasuring device according to claim 1 is characterized in that: described sensor B (3) or sensors A (4) are vertical to be 200～1000mm at a distance of size K.

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