CN2472205Y

CN2472205Y - Penetrative and reflective ultrasonic level meter

Info

Publication number: CN2472205Y
Application number: CN 01241117
Authority: CN
Inventors: 郭廷麟; 刘德润
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-11
Filing date: 2001-04-11
Publication date: 2002-01-16
Anticipated expiration: 2011-04-11

Abstract

The utility model relates to a transmission, reflection type ultrasonic liquid level meter, which comprises a body, an ultrasonic probe, a signal processing unit and a display; the utility model is characterized in that the inner meter body is an airtight chamber; a plurality of coupling sticks are fixedly arranged on the lateral face of the body; the ultrasonic probe is fixedly connected with the coupling stick. The utility model has the advantages that the device solves the problems that ultrasonic components are limited in use in the respects of pressure-proof, temperature resistance and corrosion resistance as well as the problems of electric insulation and airproof.

Description

Reflecting type ultrasonic liquid level gauge thoroughly,

The utility model relates to a kind of, reflecting type ultrasonic liquid level gauge belongs to the surveying instrument technical field of liquid level.Be applicable to the measurement of various liquid, comprising the corrosivity gas-liquid, toxic gas-liquid.

The surveying instrument that in the past was used for liquid level has glass plate type (and mica formula) water level gauge, electrode type fluviograph, ultrasonic level gage etc., all exists some problems, below narration respectively:

Glass plate type (and mica formula) water level gauge distinct disadvantage is:

1, window is contaminated easily, and tens days just opaque, and developing result is relatively poor, and flushing operation itself is arduous dangerous again.The window devitrification must be changed.

2, window material is corroded easily or damages, about six months of replacement cycle.

3, easy leakage in service, leakage point is many.

When 4, changing window material, must close the steam valve, after the replacing, be difficult to guarantee once success, not leak.This work is arduous, dangerous, frequent.

5, during the pickling boiler, can not use.

The distinct disadvantage of electrode type fluviograph is:

1, leakage point is many.

2, insulating ceramics bursts, electric pole short circuit, and mistake is " water is arranged ".

3, electrode contamination dirt is non-conductive, and mistake is for " to have vapour.

4, change electrode or the removing electrode dirt of damaging, must close the steam valve.

When 5, pressure and temperature was high, the insulation of electrode and sealing were insecure.

6, nonconducting medium can not be used.

The shortcoming of various forms ultrasonic level gage is:

1, because the restriction that the built-in mode of ultrasonic component makes it be used in withstand voltage, heatproof, aspect corrosion-resistant.

2, exist electrical isolation, the sealing problem of power lead and signal wire.

The purpose of this utility model is to provide a kind of, reflecting type ultrasonic liquid level gauge at the problem of above-mentioned existence, the ultrasonic component of this liquid level gauge adopts external mode, solve the problem of the restriction that ultrasonic component used in withstand voltage, heatproof, aspect corrosion-resistant, also solved electrical isolation and sealing problem simultaneously.

The purpose of this utility model is achieved through the following technical solutions:

It comprises table body, ultrasonic probe, signal processing apparatus, display, described table body inside is airtight cavity, table body side surface stationary arrangement has coupling bar, the transmission-type coupling bar is arranged in table body symmetria bilateralis, one side is emission, and opposite side is for receiving, and reflective coupling bar is arranged in table body one side, emission simultaneously receives, and ultrasonic probe is fixedlyed connected with coupling bar by couplant, sealing gasket, set nut.

The ultrasound wave transmitance was not all principle design and forms when the utility model was in liquid state or gaseous state with medium, and the difference that it is compared with all various forms ultrasonic level gages in the past is: ultrasonic emitting and receiving element are external.That is to say, be totally-enclosed as the table body of linker, and ultrasonic emitting and receiving element are outside the table body.Obviously there is following advantage in this design:

1, the table body does not have leakage point.

2, table body inwall deposit dirt or be corroded and can not influence measurement.

3, in specified time limit (for example 4 years), the table body need not changed or be safeguarded.

Even when 4, ultrasonic component and other device need maintenance or replacing, need not open the table body yet, need not carry out the operation of switch liquid air valve, more there is not the danger of liquid gas leakage in the maintenance.

5, the muddy erosion of liquid does not influence measurement.

6, the rising of liquid gas pressure power except that the table body need be strengthened, can not influence product reliability, security.

7, it is low that mistake is surveyed, mistake is surveyed probability.

As can be seen, the utlity model has remarkable performance, be specially adapted to the monitoring of high pressure, high temperature, severe toxicity, inflammable, explosive medium, can be in whole run durations, " watertight "; Arduous, dangerous, frequent maintenance job become easily, safety; Add and use microprocessor to carry out signal Processing, get rid of mistake fully and survey, make the result extremely reliable.

Fig. 1 is the utility model structural representation.

Fig. 2 is the transmission-type structural representation.

Fig. 3 is the reflective structure synoptic diagram.

Fig. 4 is coupling bar and ultrasonic probe johning knot composition.

Describe the utility model in detail below in conjunction with accompanying drawing:

Shown in Fig. 1-4, it comprises table body 1, ultrasonic probe 3, signal processing apparatus 9, display 8.Described table body 1 is by the welding formation linker of its gas-liquid pipe 7 with the container gas-liquid pipe, a plurality of outer coupling bars 2 of its side welding, the cavity of formation totally-enclosed.Ultrasonic probe 3 is fixed on the coupling bar 2, and the transmission-type coupling bar is arranged in table body symmetria bilateralis, and a side is emission, and opposite side is for receiving (see figure 2).Reflective coupling bar is arranged in table body one side, and emission simultaneously receives (see figure 3).Ultrasonic probe 3 is fixedlyed connected with coupling bar 2 by couplant, sealing gasket 4, cushion 5, set nut 6.Described coupling bar can adopt metal material to make, and described couplant can be a silicone oil.

Claims

1, a kind of, reflecting type ultrasonic liquid level gauge, it comprises table body, ultrasonic probe, signal processing apparatus, display, it is characterized in that described table body inside is airtight cavity, table body side surface stationary arrangement has coupling bar, and ultrasonic probe is fixedlyed connected with coupling bar.

2, according to claim 1, reflecting type ultrasonic liquid level gauge is characterized in that the transmission-type coupling bar in the arrangement of table body symmetria bilateralis, and a side is emission, and opposite side is for receiving, and reflective coupling bar is being shown the arrangement of body one side, and emission simultaneously receives.

3, according to claim 1, reflecting type ultrasonic liquid level gauge is characterized in that ultrasonic probe passes through couplant, sealing gasket, set nut and fixedlys connected with coupling bar.