CN2593189Y

CN2593189Y - Density measuring system

Info

Publication number: CN2593189Y
Application number: CN 02252208
Authority: CN
Inventors: 施永生
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-23
Filing date: 2002-08-23
Publication date: 2003-12-17
Anticipated expiration: 2012-08-23

Abstract

The utility model relates to a liquid density measuring device in a big tank container, which is particularly suitable for measuring the density gradient of the liquids with different liquid levels in a liquid storage tank in the industries, such as oilfield industry, chemical industry, food industry, etc. A gamma ray radiator, a crystal scintillation detector and a temperature sensor are fixed into an integrative probe head in a system, and then, the integrative probe head is connected with a weight-bearing cable. The integrative probe head is vertically arranged in the liquid in the tank from an opening at the top part of the tank. Thus, a servo mechanism can control the probe head to move up and down by the weight-bearing cable, so that the integrative probe head can detect the density and the temperature of the liquid at different depths. The measuring range of the utility model can reach more than 5 meters. Moreover, the utility model has the advantages of high measuring precision and convenient operation.

Description

Density measurement system

The utility model relates to a kind of liquid density measurement system, is specially adapted to the measurement of the density of liquid gradient of different liquid levels in the industry fluid reservoirs such as oil field, chemical industry, food.

In industrial processes such as oil, chemical industry, electric power, food, need carry out density, temperature, pressure, the isoparametric measurement of liquid level and control to the liquid in storage flow container and the technological process jar different vessels.At present commonly used have a fixedly ray type, float-type, multiple measuring instrument such as condenser type, fixedly ray type is owing to be subjected to the gamma-rays penetration capacity influential, range is generally in the 800mm, application is subjected to certain limitation, Germany E+H company produces a kind of storage tank liquid-level meter of high-accuracy intelligent, this liquid level gauge is in measuring liquid level, can measure the density of three kinds of different mediums in the storage tank, promptly measure the density of three points, its principle of work is based on the float principle for balance, by the less float of little driven by servomotor volume, connect measuring steel wire, measuring steel wire is wrapped on the accurate wheel hub, calculates density of liquid by the weight of float in different liquids, and its volume of this kind liquid level gauge is little, the measuring accuracy height, intelligent strong, but its application scenario is limited, the one, measuring steel wire has only 0.15mm, and different liquid mediums is arranged in the different fluid reservoirs, what have contains paraffin, impurity such as ageing oil and various chemical compounds easily sticks on steel wire and the accurate wheel hub, makes its measuring accuracy variation.Simultaneously, owing to can only measure three dot densities, can not satisfy the requirement of production application.

The purpose of this utility model provides a kind ofly can carry out the fluid density of different depth in the fluid reservoir, thermometric throw-in type servo intelligent density measurement system, it can be clear, directly perceived, both pictures and texts are excellent, and ground describes and show various measurement parameters, and can participate in automatic control in the production run, for production provides the most reliable data.

The utility model is achieved in that density measurement system is with gamma ray radiator and crystal scintillation detector, temperature sensor is fixed into incorporate probe, be connected with the load-bearing cable, the liquid of vertically putting into jar from the tank deck tapping, probe is implemented in the jar by servo control mechanism by the load-bearing cable and moves up and down, to detect different depth density of liquid and temperature, and data are returned to the intelligent data disposal system, data after the processing are controlled the motion of probe again, the intelligent data disposal system can be according to the different operating occasion, the needs of different vessels carry out the software and hardware flexible configurations, realize the Intelligent Measurement function of various complexity, measure jar density and the temperature of interior each point exactly, and image depict the variation tendency of each dot density of pot liquid with gradient map, so just can accurately calculate the interface of jar interior different liquids, thickness and quality, make operating personnel can accurately determine the volume and weight of pot liquid, thereby realized the robotization control and the management of tank field.

Advantages such as high temperature resistant, anticorrosive, the stable performance of the utility model tool, safe and reliable, intelligent degree height, measuring accuracy height, easy to operate, easy popularization, it is measured range and can reach more than 5 meters, can utilize the tank deck air hole to install, be specially adapted to old jar and transform.

The utility model is provided by following examples:

Fig. 1 is the utility model principle schematic.

Fig. 2 is the utility model servo control mechanism principle schematic.

Below in conjunction with accompanying drawing the utility model is described in further detail.

The utility model is by probe (4), load-bearing cable (5), servo control mechanism (3), data handling system compositions such as (1), its probe (4) is by gamma ray radiator and crystal scintillation detector, temperature sensor is fixed into integral structure, probe (4) joins with load-bearing signal cable (5), vertically put into the liquid of big jar (7), probe (4) is realized moving up and down by servo control mechanism (3) by load-bearing cable (5), and (4) measuring-signal of will popping one's head in is passed to data handling system (1), servo control mechanism (3) is by motor (8), reductor (9), cable reel (16), signals collecting case (15) is formed, reductor (9) output shaft (14) is coaxial with signals collecting case (15) take-up cylinder (16) main shaft (14), take-up cylinder (16) is gone up around load-bearing signal cable (5), electrode slip ring (11) and rotary code device (10) are housed on signals collecting case (15) inner main axis, electrode slip ring (11) links by brush (12) and transmitter (13), rotary code device (10) is linked by signal wire and transmitter (13), and transmitter (13) is passed to data handling system by signal cable (2) with detection signal.During use, energized, motor (8) drive speed reducer (9) of servo control mechanism (3), then drive take-up cylinder (16) by reductor (9), wire winding tube drives probe (4) by the fixed pulley on the tank deck (6) and moves up and down, to realize the purpose of probe (4) traverse measurement in jar, integrated probe (4) transfers to electrode slip ring (11) with detection signal by coupled load-bearing cable (5), transfer to transmitter (13) by electrode slip ring (11) again, by transmitter (13) signal is transferred to data handling system (1) at last.After the data processing, jar variable density of interior diverse location is shown on the display, the position probing of probe (4) is to be finished jointly by scrambler (10), transmitter (13), data handling system (1), scrambler (10) can write down the rotation peripheral speed of take-up cylinder (16), by transmitter (13) recorded content is uploaded to data handling system (1), then calculates the position that is put under the probe (4) in jar (7) according to the girth of take-up cylinder (16) by data handling system (1).

As be used in explosion-proof occasion, and should add explosion-protection equipment, use explosion-proof integrated probe and explosion-proof load-bearing cable; As jar is sealing, can utilize servo control mechanism that perforate is covered sealing; Need not seal as tank deck, be again that explosion-proof occasion can be installed on a jar outer bottom by fixed pulley with servo control mechanism, to improve its safe reliability.

Claims

A kind of density measurement system, it is made up of probe (4), load-bearing cable (5), servo control mechanism (3), data handling system (1) etc., it is characterized in that probe (4) is to be fixed into integral structure by gamma ray radiator and crystal scintillation detector, temperature sensor, probe (4) joins with load-bearing signal cable (5), vertically put into the liquid of big jar (7), probe (4) is realized moving up and down by servo control mechanism (3) by load-bearing cable (5), and (4) measuring-signal of will popping one's head in is passed to data handling system (1).
2, require 1 described density measurement system according to power, the motor (8) that it is characterized in that its servo control mechanism (3) links with reductor (9), reductor (9) output shaft (14) is coaxial with signals collecting case (15) take-up cylinder (16) main shaft, take-up cylinder (16) is gone up around load-bearing signal cable (5), electrode slip ring (11) and rotary code device (10) are housed on signals collecting case (15) inner main axis, electrode slip ring (11) links by brush (12) and transmitter (13), rotary code device (10) is linked by signal wire and transmitter (13), and transmitter (13) is passed to data handling system (1) by signal cable (2) with detection signal.