CN2433617Y

CN2433617Y - High precision fluid density on-line measuring apparatus

Info

Publication number: CN2433617Y
Application number: CN 00225142
Authority: CN
Inventors: 彭春雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-06
Filing date: 2000-07-06
Publication date: 2001-06-06
Anticipated expiration: 2010-07-06

Abstract

The utility model discloses a high precision fluid density on-line measuring apparatus, composed of the connection of a base, a fluid inlet pipe, a fluid outlet pipe, an inlet end hose, an outlet end hose, a fluid flowing pipe, a force measuring sensor, a middle force transmission element, and a measuring and indicating meter head. When the utility model is used on a construction field site, a measured fluid body flows from the fluid inlet pipe, passes through the inlet end hose, the fluid flowing pipe, the outlet end hose, and finally flows out from the fluid outlet pipe. The utility model which has the advantages of simple structure, reliable performance, high measuring precision, and low manufacture cost, is suitable for high precision measurement of various different fluid densities, particularly suitable for high precision measurement of slurry with high viscosity and suspended particles (such as cement slurry, ore slurry, paper slurry, etc.).

Description

High precision fluid density on-line measurement instrument

The utility model relates to a kind of indirect type mass flowmeter, specifically is meant a kind of high precision fluid density on-line measurement instrument.

In industries such as chemical industry, smelting, oil, water conservancy and hydropower and building engineering constructions, all need extensively carry out the fluid density on-line continuous and measure.But use more fluid density on-line measurement instrument at present and mostly be gamma-rays density instrument and ball float dynamometry density instrument etc.Though the former measuring accuracy is high and easy to use and reliable, cost an arm and a leg complex structure, use cost height, moreover the danger of radiocontamination in addition; The latter is complex structure not only then, and measuring accuracy is poor, and it is wideless to measure applicable surface, can't measure pressure conduit fluid and high-viscosity fluid.

Therefore, the purpose of this utility model is to be to provide a kind of simple in structure, dependable performance, cheap, high precision fluid density on-line measurement instrument that applicable surface is extensive.

Solution of the present utility model is as follows.It has a base, with on the bearing that base links to each other fluid inlet tubes and fluid outlet pipe are housed, fluid inlet tubes and fluid outlet pipe are connected to entrance point flexible pipe and the endpiece flexible pipe that is connected with them respectively by the end in the base, above base, also be equiped with a fluid circulating tube, the two ends of fluid circulating tube join with the other end of the other end of entrance point flexible pipe and endpiece flexible pipe respectively and are communicated with, on the base below the fluid circulating tube, fixedly be equiped with a force cell, force transmission element in the middle of the fluid circulating tube bottom is fixed with one, the bottom face of this centre force transmission element contacts with the sensing position at force cell top, base has one outward and measures the indication gauge outfit, and the transducing signal output terminal of force cell joins by lead and the measuring-signal input port of measuring the indication gauge outfit.

When the utility model with said structure specifically uses at the construction field (site), to measure the indication gauge outfit and connect the 220V electric main, feed the fluid of certain density from fluid inlet tubes, the fluid entrance point flexible pipe of flowing through, fluid circulating tube, the endpiece flexible pipe, flow out from fluid outlet pipe at last, because the center of gravity of whole fluid circulating tube is supported on the force cell on the base by middle force transmission element, so the gravity that fluid density produced also is delivered on the force cell by fluid circulating tube and middle force transmission element, and be transformed into electric signal after the sensor impression, be input to measurement indication gauge outfit through lead, show the density value of the fluid in the fluid circulating tube of flowing through by gauge outfit.When changing in the presence of the density of fluid, fluid circulating tube adds that fluid total gravity together also changes, again because the two ends of fluid circulating tube are connecting is entrance point flexible pipe and the endpiece flexible pipe that miniature deformation can take place, make fluid circulating tube can produce along with the change of this gravity accurate upper and lower to micro-displacement, so the change of this gravity also just can accurately pass to force cell, so that measuring the changing value that just can accurately read fluid density on the indication gauge outfit.

The utility model structure tube list, dependable performance, cheap for manufacturing cost, the user is acceptant.It can be used for the continuous coverage under the various complex environments, adapts to different fluids, particularly high viscosity, contains the slurry (as cement slurry, ore pulp, paper pulp etc.) of suspended particle.Its measuring accuracy height, resolving accuracy can reach 0.02g/cm ^a

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 adopts the embodiment of a kind of concrete structure of U-shaped fluid circulating tube for the utility model;

Fig. 2 is the A-A cutaway view Amplified image of Fig. 1;

The embodiment of Fig. 3 another kind of concrete structure of straight shape fluid circulating tube for the utility model adopts.

Referring to Fig. 1 and Fig. 2.This embodiment has one and is tabular base 1, perforate on fluid inlet tubes 3 and fluid outlet pipe 4 passes respectively with base 1 links to each other the same bearing 2, basically be fixedly mounted on base 1 top parallel to each other, fluid inlet tubes 3 and fluid outlet pipe 4 are connected to entrance point flexible pipe 5 and the endpiece flexible pipe 6 that is connected with them respectively by the end in the base 1, the fluid circulating tube 7 that is installed in base 1 top takes the shape of the letter U, advancing of this U-shaped fluid circulating tube 7, the outlet two ends join with the other end of the other end of entrance point flexible pipe 5 and endpiece flexible pipe 6 respectively and are communicated with, on the base below the fluid circulating tube 71, fixedly be equiped with a force cell 8, U-shaped fluid circulating tube 7 bottoms are fixed with one across shaft-like middle force transmission element 9 of being of U-shaped pipe two arms, the bottom face of this centre force transmission element 9 contacts with the sensing position at force cell 8 tops, have the indication of measurement gauge outfit 10 outside the base 1, the transducing signal output terminal of force cell 8 indicates the measuring-signal input port of gauge outfit 10 to join by lead 11 and measurement.Because fluid circulating tube 7 adopts the U-shaped pipe, make fluid inlet tubes 3 and fluid outlet pipe 4 occupy the same end of base 1, and the high precision in order to realize measuring, this embodiment also offers inside dead eye respectively in the outside, import and export end of U-shaped fluid pipe 7, and conical jewel 12 is housed respectively in the two bearings hole, two conical jewel 12 outsides have the needle shaft support 13 that is separately fixed on the base 1, the tip that fixedly is equiped with 14, two needle shafts 14 of needle shaft on two needle shaft supports 13 is respectively stretched into respectively and is slided in two conical jewels 12.A kind of like this structure just can make when the density that flows through the fluid in the fluid circulating tube 7 changes, and fluid circulating tube 7 can be made upper and lower minor rotation by cast-over axle 14, thereby guarantees the high precision of measurement.

Referring to Fig. 3.This embodiment has one and is tabular base 1, fluid inlet tubes 3 and fluid outlet pipe 4 pass respectively and link to each other with base 1 and be in perforate on two

different bearings

2 and 15 at base 1 two ends respectively, basically along being fixed on base 1 top point-blank, fluid inlet tubes 3 and fluid outlet pipe 4 are connected to entrance point flexible pipe 5 and the endpiece flexible pipe 6 that is connected with them respectively by the end in the base 1, the fluid circulating tube 7 that is installed in base 1 top is straight shape, advancing of this straight shape fluid circulating tube 7, the outlet two ends join with the other end of the other end of entrance point flexible pipe 5 and endpiece flexible pipe 6 respectively and are communicated with, on the base below the fluid circulating tube 71, fixedly be equiped with a force cell 8, U-shaped fluid circulating tube 7 bottoms are fixed with one and are shaft-like middle force transmission element 9, the bottom face of this centre force transmission element 9 contacts with the sensing position at force cell 8 tops, have the indication of measurement gauge outfit 10 outside the base 1, the transducing signal output terminal of force cell 8 indicates the measuring-signal input port of gauge outfit 10 to join by lead 11 and measurement.

In above-mentioned two embodiment, force cell 8 all can adopt commercially available ES series of products, as the ES-1100 type; Measure indication gauge outfit 10 and all can adopt commercially available supporting ES series of products,, also can adopt commercially available XMZ5000 type universal intelligent digital indicator as the ES-1100 type.

Claims

1, a kind of high precision fluid density on-line measurement instrument, it is characterized in that, it has a base, with on the bearing that base links to each other fluid inlet tubes and fluid outlet pipe are housed, fluid inlet tubes and fluid outlet pipe are connected to entrance point flexible pipe and the endpiece flexible pipe that is connected with them respectively by the end in the base, above base, also be equiped with a fluid circulating tube, the two ends of fluid circulating tube join with the other end of the other end of entrance point flexible pipe and endpiece flexible pipe respectively and are communicated with, on the base below the fluid circulating tube, fixedly be equiped with a force cell, force transmission element in the middle of the fluid circulating tube bottom is fixed with one, the bottom face of this centre force transmission element contacts with the sensing position at force cell top, base has one outward and measures the indication gauge outfit, and the transducing signal output terminal of force cell joins by lead and the measuring-signal input port of measuring the indication gauge outfit.

2, high precision fluid density on-line measurement instrument according to claim 1, it is characterized in that, fluid inlet tubes and fluid outlet pipe pass the perforate on the same bearing that links to each other with base respectively, basically be fixedly mounted on the base top parallel to each other, the fluid circulating tube that is installed in the base top takes the shape of the letter U, advancing of this U-shaped fluid circulating tube, the endpiece outside offers inside dead eye respectively, and conical jewel is housed respectively in the two bearings hole, two conical jewel outsides have the needle shaft support that is separately fixed on the base, fixedly be equiped with needle shaft on two needle shaft supports respectively, the tip of two needle shafts is stretched into respectively and is slided in two conical jewels.

3, high precision fluid density on-line measurement instrument according to claim 1, it is characterized in that, fluid inlet tubes and fluid outlet pipe pass respectively and link to each other with base and be in perforate on two different bearings at base two ends respectively, basically along being fixed on the base top point-blank, the fluid circulating tube that is installed in the base top is straight shape.