CN2660498Y

CN2660498Y - Liquid position measurer

Info

Publication number: CN2660498Y
Application number: CN 200420041841
Authority: CN
Inventors: 刘珉恺
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-16
Filing date: 2004-04-16
Publication date: 2004-12-01
Anticipated expiration: 2014-04-16

Abstract

The utility model relates to a level measuring device, in particular to a liquid level measuring device, comprising at least a floater arranged in a vessel and a measuring device for measuring the movement of the floater, which is characterized in that magnetic materials are arranged on the floater. An inner cylinder is fixed in the vessel along the altitude direction of the vessel. The floater is arranged corresponding to the inner cylinder. At least the bottom of the inner cylinder is sealed. Height marker information is arranged in the inner cylinder along the altitude direction of the vessel. And a readout device of the height marker information is arranged in the inner cylinder. The liquid level measuring device has the advantages of high precision and wide application field.

Description

A kind of liquid position measurement mechanism

Affiliated technical field: the utility model relates to a kind of article position measuring device, particularly a kind of liquid position measurement mechanism.

Background technology: in the Chinese patent 85203066 disclosed level measuring methods, the float that utilization is installed in the container is connected with the metal tape with scale, metal tape is placed outside the container, when the liquid in the container changes, the also upper-lower position variation thereupon of the interior floating float of container, the metal tape that drive has label information moves, and reads label information on the metal tape by being fixed on the outer read-write equipment of container, provides the exact value of liquid level.Wherein a kind of mode of above-mentioned label information is that the mode that is called Gray code exists on the metal tape, and read-write equipment is a photo-electric, if the precision of coding is 1mm, then can provide the precision of 1mm, and it can be widely used in the level gauging of open containers.Place outside the container owing to will have the metal tape of label information, therefore, be difficult to itself and seal of vessel are integral, be not suitable for the measurement of liquid level in closed container or band pressure vessel.And in Chinese patent 89204414.4 in the disclosed technology, provided principle process and 85203066 similar structures, it is to connect a tinsel by float, drives code-disc by tinsel and rotates, then by read-write equipment read on the code-disc the sign indicating number, provide liquid level information by calculating.This coded system is to change by the position, hole that adds up the notch forward or reverse on the code-disc to provide level value, and the problem of existence is the variation that sample rate is greater than liquid level, can not cut off the power supply simultaneously.Otherwise, need carry out initialization again.Its feature is to use in airtight container.

Another kind of public technology as level gauging is a magnetic switch formula liquid level gauge, this is an ancient and reliable level measuring method, it can be used in the various containers, its principle of work is to place the magnetic float in container, and liquid level changes up and down, drives the magnetic float and changes up and down, container is outer to have a plurality of magnetic turnover panels with the design of level gauging range, the many more precision of magnetic turnover panel are high more, and when liquid level drove the magnetic float and moves to the outer corresponding magnetic turnover panel position of container in the container, the magnetic turnover panel provided corresponding indication.The mode of this liquid level indication is very reliable, can adapt to the measurement of various tank fill levels, but because precision is not high, makes to use to be restricted.

Summary of the invention: the purpose of this utility model provides a kind of precision height, the wide liquid position measurement mechanism in adaptation field.

The purpose of this utility model is to realize like this, a kind of liquid position measurement mechanism, which comprises at least the float that places in the container and measure the measurement mechanism composition that float moves, it is characterized in that: magnetic material on the float, in container, prolong the container height direction and be fixed with inner core, the relative inner core of float location, interior at least tube bottom sealing, prolonging the container height design in the inner core has height mark information, the reading device that height mark information is arranged in the inner core has signal output interface in the reading device.When float changed up and down with liquid level, float drove reading device and moves up and down, and reading device reads the container height label information constantly, and was that electric signal is outwards exported by signal output interface with the height mark information translation.

Reading device is fixed in the housing, and the body that is magnetic on the housing, housing place on the float, and the corresponding magnetic with float of housing is repelled each other.

The height mark information of design is the coded message by 8421 yards in the inner core.

The height mark information of design is the coded message by Gray code in the inner core.

Described float is enclosed within on the inner core.

Described inner core has heat-insulation layer, protective seam.

In the described inner core guiding mechanism is arranged.

Described reading device can be to read height mark information by photovoltaic.

Described reading device can be to read height mark information by the magnetoelectricity mode.

The utility model has the advantages that: the magnetic float is arranged in container and prolong highly the reading device that in the inner core that designs, the inner core height mark information is arranged and read elevation information, reading device has magnetic equally, it is positioned on the magnetic float, and the upper magnetic of the bottom of reading device and magnetic float is repelled each other.Reading device floats on the magnetic float always like this, liquid level changes up and down, the magnetic float changes up and down thereupon, the reading device that drives on the float moves, the height mark information that reading device constantly reads on the inner core is outwards exported because inner core can seal fully, it again with container insulator, therefore, can be adapted to respectively and detect in the environment liquid level of various liquid.

Description of drawings:

The utility model is described in further detail below in conjunction with the embodiment accompanying drawing:

Fig. 1 is the utility model embodiment 1 structural representation;

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

Fig. 3 is the inner core sectional view;

Fig. 4 is embodiment 1 a reading device synoptic diagram;

Fig. 5 is the utility model embodiment 2 structural representations.

Among the figure, 1, container; 2, magnetic float; 3, inner core; 4, reading device; 5, height mark information; 6, liquid; 7, liquid level; 8, transmitter; 9, flange; 10, cable; 11, protection tube; 12, heat-insulation layer; 13, internal layer; 14, gathering sill; 15, housing; 16, magnetic material; 17, optical fiber input/output terminal; 18, photoelectric receiving tube; 19, battery; 20, interface; 21, light input end; 22, light-emitting tube; 23, guide lugs; 24, guide pole; 25, lower magnet; 26, upper magnet; 27, web member; 28, control panel.

Embodiment: as shown in Figure 1, the vertical fixing up and down of prolonging 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.Height mark information 5 is arranged on the inner core 3, and height mark information 5 can be to the height mark information 5 that goes up down by 8421 establishments; Also can be the height mark information 5 by gray encoding, its scale division value 1mm, 1cm make arbitrarily.In order to read the height mark information 5 in the inner core 3, the reading device 4 that reads these height mark information 5 is arranged in inner core 3.Reading device 4 positions, location are by upper magnet 26 on the housing 15 of reading device 4 and the lower magnet 25 on the magnetic float 2; Upper magnet 26 repels each other with lower magnet 25 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 injects, and liquid level 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, in order to adapt to the measurement of temperature of high-temp liquid, make reading device 4 that a temperature space that does not influence performance be arranged, inner core 3 can be made of for 13 3 layers protection tube 11, heat-insulation layer 12, internal layer, protection tube 11 can be (stainless steel, glass, PVC etc.) but not only can be anticorrosion but also the material of heatproof; Heat-insulation layer 12 can be thermal insulation coatings or insulation material; Thermal insulation coatings can be applied on internal layer 13 outer walls; Insulation material can be filled between protection tube 11 and the internal layer 13.Internal layer 13 is made up of the smooth light penetrating object pipeline of inside surface, and height mark information 5 is arranged on the interior conduit.

As shown in Figure 3, can read height mark information 5 accurately in order to make the reading device 4 that floats on inner core 3, increase gathering sill 14 in the inner core 3, when reading device 4 moved up and down like this, the read head of code channel correspondence can keep good distance.

A kind of enforcement of reading device 4 is the modes that adopt Fig. 4, it comprises a housing 15, corresponding to each code channel fixing optical fiber is arranged on the housing 15, a branch of optical fiber on each code channel is divided into two-way, one tunnel corresponding photoemission cell 22, the corresponding photoelectric receiving tube 18 in another road, an end altogether is as optical fiber input/output terminal 17, and optical fiber input/output terminal 17 is over against code channel; Optical fiber is multicore, the corresponding a branch of optical fiber of each code channel; The shunt of the corresponding photoemission cell 22 in the optical fiber of all code channels can be integrated, and sends input light by a photoemission cell 22 to it; Photoelectric receiving tube 18 and photoemission cell 22 are electrically connected to respectively on the control panel 28, and control panel 28 will read the height mark information 5 on the inner core 3.Code channel 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.There is lower magnet 25 reading device 4 lower ends.Whole reading device 4 is by battery 19 power supplies.Outwards export the data of liquid level information by interface 20.But the data of liquid level information pass the signal that changes teletransmission into by transmitter 8 and pass to the pulpit by cable 10.Reading device 4 reads code channel information by certain time interval.Reading device 4 corresponding gathering sills 14 have projection, so that cooperate the location with inner core 3.Realize steady rise and fall.

Fig. 5 is another kind of embodiment, it is fit to higher container, inner core is fixedly connected by web member 27 by more piece, because web member 27 can make inner core 3 outer walls irregular, influencing magnetic float 2 prolongs inner core 3 and moves up and down, the endoporus of magnetic float 2 can be more many greatly than inner core 3 external diameters like this, being one moves up and down steadily magnetic float 2, prolong inner core 3 both sides and increase by two guide poles 24, it is fixing stretching with container up and down that magnetic float 2 both sides 23, two guide poles 24 of two guide lugs of extension pass two guide lugs, 23 backs.

Certainly height mark information 5 can be the elevation information of magnetic recording media record.Reading device 4 will be a magnetic read-write head like this.For upper magnetic head 26 and following magnetic head 25 are impacted it, there is nonmagnetic protective layer that it is protected.

Though two kinds of embodiment that the utility model provides should can design more device according to such thought.Can adopt the mode of camera as reading device, camera adopts cmos or ccd sensor, and its mode that transmits signal also has multiple mode.To in another summary of the invention of inventor, disclose about this point.

Claims

1, a kind of liquid position measurement mechanism, which comprises at least the float that places in the container and measure the measurement mechanism composition that float moves, it is characterized in that: magnetic material on the float, in container, prolong the container height direction and be fixed with inner core, the relative inner core of float location, at least interior tube bottom sealing, prolonging the container height design in the inner core has height mark information, and the reading device of height mark information is arranged in the inner core.

2, a kind of liquid position measurement mechanism according to claim 1, it is characterized in that: described reading device is fixed in the housing, and the body that is magnetic on the housing, housing place on the float, and the corresponding magnetic with float of housing is repelled each other.

3, a kind of liquid position measurement mechanism according to claim 1 is characterized in that: the height mark information of design is the coded message by 8421 yards in the inner core.

4, a kind of liquid position measurement mechanism according to claim 1 is characterized in that: the height mark information of design is the coded message by Gray code in the inner core.

5, a kind of liquid position measurement mechanism according to claim 1, it is characterized in that: described float is enclosed within on the inner core.

6, a kind of liquid position measurement mechanism according to claim 1, it is characterized in that: described inner core has heat-insulation layer, protective seam.

7, a kind of liquid position measurement mechanism according to claim 1 is characterized in that: in the described inner core guiding mechanism is arranged.

8, a kind of liquid position measurement mechanism according to claim 1 is characterized in that: described reading device is that photovoltaic reads height mark information.

9, a kind of liquid position measurement mechanism according to claim 1 is characterized in that: described reading device is that the magnetoelectricity mode reads height mark information.

10, according to claim 1,8 described a kind of liquid position measurement mechanisms, it is characterized in that: described reading device (4) comprises a housing (15), housing (15) is gone up has fixing optical fiber corresponding to each code channel, a branch of optical fiber on each code channel is divided into two-way, one tunnel corresponding photoemission cell (22), the corresponding photoelectric receiving tube (18) in another road, an end altogether is as optical fiber input/output terminal (17), and optical fiber input/output terminal (17) is over against code channel; Optical fiber is multicore, the corresponding a branch of optical fiber of each code channel; The shunt of the corresponding photoemission cell (22) in the optical fiber of all code channels can be integrated, and sends input light by a photoemission cell (22) to it; Photoelectric receiving tube (18) and photoemission cell (22) are electrically connected to respectively on the control panel (28), and control panel (28) will read the height mark information (5) on the inner core (3).