CN101458115A

CN101458115A - Liquid level measurement method suitable for different length measuring require

Info

Publication number: CN101458115A
Application number: CNA2008102324103A
Authority: CN
Inventors: 刘珉恺
Original assignee: Xian Xinwei Information Technology Co Ltd
Current assignee: Xian Xinwei Information Technology Co Ltd
Priority date: 2008-11-25
Filing date: 2008-11-25
Publication date: 2009-06-17

Abstract

The invention relates to a liquid level measurement method applicable to various length measuring requirements. The used device at least comprises an inner barrel (3) fixed along the height direction of a container (1), a magnetic floater (2) sheathed on the inner barrel (3) and a scale and a reading device (4) in the inner barrel (3). The device is characterized in that a metal strip (5) is fixed in the inner barrel (3) along the upper and lower part of the inner barrel (3), height scale is provided along the length direction of the metal strip (5), the metal strip (5) penetrates through a metal strip groove (14) in the middle of the reading device (4), when the magnetic floater (2) moves upwards and downwards with the liquid level, the magnetic floater (2) drives the reading device to move upwards and downwards in the inner barrel (3) along the metal strip (5), the reading device (4) reads the height scale information along the length direction of the metal strip (5) in real time and converts the height information into electrical signals which are output from a signal output interface. The method has simple process and easy on-site assembly and is applicable to different length measuring requirements.

Description

The level measuring method that is fit to different length measuring require

Technical field

The present invention relates to the level measuring method of a kind of liquid level emasuring device, particularly a kind of suitable different length measuring require.

Background technology

Chinese patent 200410026069.8 discloses (a kind of liquid position measuring method), it by be fixed with inner core along the container height direction, the magnetic float is socketed on the inner core, when liquid level moves, the magnetic float moves relative to inner core, along the container height design height mark information is arranged in the inner core, the reading device that height mark information is arranged in the inner core, when float changes up and down with liquid level, float drives reading device and moves up and down, reading device reads the container height label information constantly, and is that electric signal is outwards exported by signal output interface with the height mark information translation.

Because design height label information in inner core, but design height label information or scale technology process are comparatively complicated in long flow container, the on-the-spot relatively difficulty of installing.

Summary of the invention

The purpose of this invention is to provide simple, the on-the-spot level measuring method that is relatively easy to be fit to different length measuring require of installing of a kind of technology.

The object of the present invention is achieved like this, the level measuring method that is fit to different length measuring require, which comprises at least along the container height direction and be fixed with inner core, be socketed in the magnetic float on the inner core, mark and reading device in the inner core, it is characterized in that: in inner core, be fixed with steel band up and down along inner core, the steel band length direction has altitude scale, steel band passes the steel band groove in the middle of the reading device, when the magnetic float moves up and down with liquid level, the magnetic float drives reading device and moves up and down in inner core along steel band, and reading device reads the altitude scale information of steel band length direction in real time, and elevation information is converted to electric signal is outwards exported by signal output interface.

There is altitude scale on described steel band both sides, and reading device has the circuit that reads steel band both sides altitude scale.

Advantage of the present invention is: owing to the design of altitude scale information along steel band length, and the length of steel band can design by designing requirement, and technology is simple.The steel band convenient transportation, installation does not have problems at the scene.Secondly, there is altitude scale on the steel band both sides, and reading device has the circuit that reads steel band both sides altitude scale.Can reduce inner diameter of steel flue like this.And the location of reading device in inner core be also by steel band location, makes inner core not need special Design Orientation mechanism.

Description of drawings

The invention will be further described below in conjunction with the embodiment accompanying drawing.

Fig. 1 is the embodiment of the invention 1 structural representation;

Fig. 2 is the inner core cut-open view;

Fig. 3 is the reading device structural representation.

Among the figure: 1, container; 2, magnetic float; 3, inner core; 4, reading device; 5, steel band; 6, liquid; 7, liquid level; 8, transmitter; 9, flange; 10, optical cable or cable; 11, light signal output interface; 12, housing; 13, light transmit-receive tube; 14, steel band groove; 15, lower magnet; 16, treatment circuit; 17, upper magnet; 18, code channel; 19, battery.

Embodiment

As shown in Figure 1, the vertical fixing up and down along container 1 in the container 1 has inner core 3, the inner core 3 outer magnetic floats 2 that are with; Magnetic float 2 floats on the position of the top liquid level 7 of liquid 7 in the container 1.Steel band 5 is arranged in the inner core 3, and altitude scale information is on steel band 5 length directions, and altitude scale can be the code channel 18 by gray encoding, and the optional 1mm of its scale division value of altitude scale, 1cm make arbitrarily.In order to read the elevation information of the code channel 18 in the inner core 3, steel band 5 passes the steel band groove 14 in the middle of the reading device 4, when magnetic float 2 moves up and down with liquid level, magnetic float 2 drives reading device 4 and moves up and down in inner core 3 along steel band 5, reading device 4 reads the altitude scale information of steel band 5 length directions in real time, and elevation information is converted to electric signal is outwards exported by light signal output interface 11.

Reading device 4 positions, location are by upper magnet 17 on the housing 12 of reading device 4 and the lower magnet 15 on the magnetic float 2; Upper magnet 17 repels each other with lower magnet 15 corresponding surface magnetic poles.As opposite face is that s is extremely to the s utmost point.Reading device 4 is stable like this remains on fixing position, magnetic float 2 tops.Liquid 6 injects, and liquid level 7 rises, move on the magnetic float 2, reading device 4 with on move.Fluid discharge, liquid level descends, and magnetic float 2 moves down, and reading device 4 moves down thereupon.Insert inner core 3 lower seal in the container 1, the top is fixing with transmitter 8 by flange 9, so inner core 3 can seal fine.

As shown in Figure 2, the code channel 18 on the steel band 5 is two kinds of strong colors of black and white or contrast, wherein a kind of look corresponding numeral 0, another kind of look corresponding numeral 1.Altitude scale on the steel band 5 can be in the design of steel band 5 both sides, and steel band 5 both sides form the code channel 18 favourable diameters that reduce inner core 3.

As shown in Figure 3, steel band groove 14 is arranged in the middle of the housing of reading device 4 12, the code channel 18 in the corresponding steel band groove 14 on the steel bands 5, each bar code channel 18 has light transmit-receive tube 13, is used to finish the location and reads on the code channel 0 or 1 information.

There is lower magnet 15 reading device 4 lower ends.Whole reading device 4 is by battery 19 power supplies.Surely read to read code channel 18 information by treatment circuit 16, outwards export the data of liquid level information again by light signal output interface 11 by light transmit-receive tube 13.But the data of liquid level information pass the signal that changes teletransmission into by transmitter 8 and pass to the pulpit by optical cable or cable 10.Reading device 4 reads code channel information by certain time interval.

Claims

1, the level measuring method that is fit to different length measuring require, which comprises at least along container (1) short transverse and be fixed with inner core (3), be socketed in the magnetic float (2) on the inner core (3), mark and reading device (4) in the inner core (3), it is characterized in that: in inner core (3), be fixed with steel band (5) up and down along inner core (3), steel band (5) length direction has altitude scale, steel band (5) passes the steel band groove (14) in the middle of the reading device (4), when magnetic float (2) when moving up and down with liquid level, magnetic float (2) drives reading device and moves up and down in inner core (3) along steel band (5), reading device (4) reads the altitude scale information of steel band (5) length direction in real time, and elevation information is converted to electric signal is outwards exported by signal output interface.

2, the level measuring method of suitable different length measuring require according to claim 1 is characterized in that: there is altitude scale on described steel band (5) both sides, and reading device (4) has the circuit that reads steel band (5) both sides altitude scale.