CN2414399Y

CN2414399Y - Liquid level boundary meter

Info

Publication number: CN2414399Y
Application number: CN 00211098
Authority: CN
Inventors: 王连顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-10
Filing date: 2000-03-10
Publication date: 2001-01-10
Anticipated expiration: 2010-03-10

Abstract

The utility model discloses a liquid level limiting surface meter capable of measuring the height of water and the thickness of an oil layer. The utility model is characterized in that a single-chip computer capable of calculating the height of every liquid is arranged in a displayer, wherein, a liquid level sensor is installed above the inner cavity of a storage tank; a pressure transmitter is arranged below the inner cavity of the storage tank and is connected with the single-chip computer by electric wires; the pressure transmitter gives a pressure signal, the liquid level sensor gives the overall height of the liquid level, and the height of the oil and the height of the water can be known through the calculation of the single-chip computer. The utility model can still more accurately measure the liquid level height of every liquid.

Description

Liquid level boundary meter

The utility model relates to a kind of liquid level instrument, and this instrument is mainly used in when two kinds of different liquid of proportion load in mixture in same container, can measure the liquid level of every kind of liquid respectively.

Continuous development along with petroleum industry, China sea, onshore oil field have reached dozens of, the crude oil that each oilfield exploitation comes out all is entrained with a large amount of underground water, the a large amount of storage tank of former oil require that these profits mix carries out oil and water separation, these storage tanks not only need often to monitor the liquid level overall height, in case tank boil-overs also needs often to observe the core intersection that floats waterborne, so that in time receive oil.

At present, the instrument kind of home and abroad metering liquid level is a lot, float bowl-type, float-ball type, turnover plate type, condenser type etc. are arranged in early days, there have ultrasonic type, radio frequency admittance formula, magnetic to swash in the recent period to be telescopic etc., most one of these liquid level instruments are only surveyed a parameter, and with the container bottom is to measure starting point, and they are then powerless to measuring the continuous core intersection that changes of starting point; Have only Chinese utility model patent " liquid-level interface monitor " ZL962253219, can survey two parameters of liquid level overall height and core intersection,, find that it has following defective through using for many years:

(1) float over the small floating ball of water-oil interface, being equal in weight of buoyancy that is subjected in the water-oil interface place and itself is state of weightlessness, often because of a little frictional resistance, or because of what ball float was made off-centre arranged slightly, influences upper and lower slip, and can not objectively respond core intersection.

(2) after oil extraction is come out, except that being entrained with silt, also be entrained with mineral matters such as iron powder, and the small floating ball that has magnetic can adsorb these iron powders, the accumulation results of absorption can be blocked the upper and lower slip of small floating ball, and be influenced the precision of instrument throughout the year.

The purpose of this utility model is to provide a kind of Liquid level boundary meter that can accurately measure every kind of liquid level height.

The utility model above-mentioned purpose realizes by following technological means, a kind of Liquid level boundary meter, this instrument comprises liquid level sensor, pass through terminal box, electric wire is connected with display instrument, to show the overall height of liquid, the single-chip microcomputer that can calculate every kind of liquid height is housed in the display instrument, described liquid level sensor is installed on the top of storage tank inner chamber, pressure unit is equipped with in the below of storage tank inner chamber, and be connected with single-chip microcomputer by electric wire, pressure unit provides pressure signal, and liquid level sensor provides the liquid level overall height, just knows innage and water height through the computing of single-chip microcomputer.

The operational pattern of single-chip microcomputer is:

The utility model has been owing to cancelled the float that is positioned at the water-oil interface place, and replaces pressure unit, avoided the measuring error that causes because of sliding up and down of float, so the utility model can be measured the liquid level of every kind of liquid more accurately.

Introduce the utility model specific embodiment in detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural representation.

As shown in Figure 1, liquid level sensor 3 is positioned at the top of storage tank 1 inner chamber, anti-explosion terminal box 4 is loaded on outside the storage tank 1, pressure unit 2 is equipped with in the below of storage tank 1 inner chamber, liquid level sensor 3 all is connected with display instrument 6 interior single-chip microcomputers 7 by electric wire 5 and anti-explosion terminal box 4 with pressure unit 2, single-chip microcomputer 7 just can be according to the pressure signal of output and the height of the height of liquid level overall height calculated signals water outlet and oil, just can directly read the height of oil level and water level from the display instrument 6.

Liquid level sensor 3 and pressure unit 2 can be installed on respectively on the inwall of storage tank 1, also can be installed on the bar as shown in Figure 1.

Claims

1. Liquid level boundary meter, this instrument comprises liquid level sensor [3], be connected with display instrument [6] by terminal box [4], electric wire [5], it is characterized in that: the single-chip microcomputer [7] that can calculate every kind of liquid height is housed in the display instrument [6], described liquid level sensor [3] is installed on the top of storage tank [1] inner chamber, pressure unit [2] is equipped with in the below of storage tank [1] inner chamber, and is connected with single-chip microcomputer [7] by electric wire.

2. instrument according to claim 1 is characterized in that: the operational pattern of described single-chip microcomputer [7] is: