CN1755333A - Air bubble type liquid level gauge - Google Patents
Air bubble type liquid level gauge Download PDFInfo
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- CN1755333A CN1755333A CNA2005100088704A CN200510008870A CN1755333A CN 1755333 A CN1755333 A CN 1755333A CN A2005100088704 A CNA2005100088704 A CN A2005100088704A CN 200510008870 A CN200510008870 A CN 200510008870A CN 1755333 A CN1755333 A CN 1755333A
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- air
- solenoid valve
- air supply
- liquid level
- liaison
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
- G01F23/165—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid of bubbler type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
- G01F23/164—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid using a diaphragm, bellow as transmitting element
Abstract
The invention provides an air bubble type liquid level meter, which is provided with an air supply tube 12, at least the lower end of which is merged in the liquid in a liquid box, a compressed air supply source 34 which supplies compressed air for the air supply tube 12, a pressure sensor 54 which measures air pressure in the air supply tube 12, a display part 58 which displays the liquid level in a liquid box 10 based on detection signals of the pressure sensor 54, a first electromagnetic valve 65 which opens and closes a supply gateway for the compressed air from the compressed air supply source 34 to the air supply tube 12, and a second electromagnetic valve 66 which opens and closes an air pressure detection gateway from the air supply tube 12 to the pressure sensor 54. In the air supply mode that the first electromagnetic valve 65 opens the supply gateway for the compressed air, the second electromagnetic valve 66 closes the air pressure detection gateway, and in the measurement mode that the second electromagnetic valve 66 opens the air pressure detection gateway, the first electromagnetic valve 65 closes the supply gateway for the compressed air.
Description
Technical field
The present invention relates to be used for to measure the air bubble type liquid level gauge of the liquid level of the liquid that the fluid box of boats and ships etc. stores.
Background technology
In the ballast box or fuel tank, water tank etc. of the boats and ships of container ship or oil tanker one class, the liquid level gauge of the liquid level that is used to detect storage is being set.As the instrumentation mode of such liquid level gauge, present known have float-type, bubble type etc.The majority of air bubble type liquid level gauge in the past is provided with air supply pipe on each fluid box of a plurality of fluid box of configuration, in the above-mentioned air supply pipe that submerges in the liquid that is stored in the fluid box, provide and deliver into being arranged at the pressurized air that Machine Room or other regional compressors are made by pipeline.
In air bubble type liquid level gauge, the air supply pipe that constitutes by the pipe of bottom free open along the vertical direction setting at the fluid box of putting into liquid, when liquid is put into fluid box, become bubble from the bottom of air supply pipe and discharge, by above-mentioned pipeline pressurized air is supplied to air supply pipe.At this moment the interior pressure P in the air supply pipe since with depth H at liquid multiply by add on the manometric head ρ H that fluid density ρ draws the gaseous tension of liquid upper, promptly " total head " equate, so will deduct numerical value that the gaseous tension of liquid upper obtains from detected total head and be shown in display as the liquid level of liquid.Pressurized air is by Machine Room or other regional compressor manufacturings, supplies to the Level Detection portion of each fluid box from the main line that is laid on the deck through bye-pass, or supplies to the Level Detection portion of each fluid box through pipeline independently.Pressure in the air supply pipe that is made of pipe is different because of the manometric head (liquid depth) of liquid, and liquid head is different because of each fluid box.But, the air bubble type liquid level gauge of existing form, since pressurized air supply with by a compressor, compressed-air actuated air pressure, must keep balancing each other, so have with respect to the fluid box degree of depth or the fluid pressure head air pressure in each moment shortcoming too high, that the instrumentation value has subtle change that becomes with the maximum hydraulic pressure head that wants instrumentation.
Therefore, the applicant has proposed a kind of vapour-pressure type liquid level gauge, the control device of the pressure data control pump that this Pneumatic liquid level indicator has air supply pipe in the liquid of the fluid box that submerges, pressurized air can be fed to pump in the air supply pipe, be arranged at retaining valve between pump and the air supply pipe, be used for the pressure transducer of the gaseous tension in the instrumentation air supply pipe, sent by pressure transducer, it is characterized in that, above-mentioned air supply pipe, pump, retaining valve, pressure transducer are set on each fluid box, and this vapour-pressure type liquid level gauge has been obtained patent right (with reference to patent documentation 1)." vapour-pressure type liquid level gauge " alleged in the patent documentation 1 is air bubble type liquid level gauge.
Adopt patent documentation 1 described invention, can obtain following effect.
1. do not need numerous and diverse pipe arrangement, can easyly operate as the electric device that works independently.
2. because as long as the pressure gas that only has the air supply pipe to instrumentation portion feed is just passable, so the pump that low capacity is installed just enough.
3. owing to supply with pressure gas, be subjected to the influence of external temperature hardly from instrumentation portion point blank.
4. owing to supply with pressure gas, can easyly control, because in income instrumentation portion of the instrumentation portion terminal box, so Maintenance and Repair are simple from the point blank of instrumentation portion.
Patent documentation 1: Jap.P. the 2951954th communique.
Recently, simplify the minimizing funds for making liquid level gauge, at the explosion-proof area of oil tanker or chemical tanker or liquefied natural gas (LNG) carrier, low price but few, the safe air bubble type liquid level gauge of fault not needing to be used for the case of so high instrumentation precision.
Therefore, be that example describes with nearest air bubble type liquid level gauge.In Figure 14, Figure 15, in the fluid box 10 of boats and ships, storing liquid 14 such as oil, water.Roof upper face side at fluid box 10 is installed with air purge head 20 by vertical tube joint 16, in the mode that hangs down air supply pipe 12 is installed to the bottom surface of fluid box 10 from air purge head 20.On air purge head 20, connecting pipeline 30 and pipeline 32.Pipeline 30 is to be used to supply with compressed-air actuated pipeline, and pipeline 32 is the pipelines that are used to take out the signal air.
As shown in figure 15, air purge head 2O makes the cup form of counter-rotating up and down, and its inside is divided into two up and down with next door 21, on the next door 21 diaphragm 22 is installed simultaneously.The last side room that separates with next door 21 is communicated to above-mentioned pipeline 30 by pipe.Pipeline 30 passes through throttle orifice 26, also is communicated with air supply pipe 12 through flowrate control valve 28.Air supply pipe 12 is communicated with above-mentioned pipe arrangement 32 by flowrate control valve 28 and pipe.Air supply pipe 12 also is communicated with the inner space of above-mentioned diaphragm by suitable pipe.Thereby the air pressure in the air pressure of diaphragm 22 inside and the air supply pipe 12 is identical.Setting volute spring 24 in the inside of diaphragm 22, suppressing diaphragm 22 upward by this volute spring 24 in Figure 15, therefore, the upside space that separates with next door 21 is tending towards stenosis.Above-mentioned flowrate control valve 28 and the bar that hangs down from diaphragm 22 roofs link together.
Air purge head 20 is worked as follows.As supplying with pressurized air from pipeline 30 under the state in the liquid 14 of the fluid box 10 that submerges in the bottom of air supply pipe 12, then the air pressure in upside space, be the air pressure in diaphragm 22 outsides than the air pressure of diaphragm 22 inside, be the air pressure height in the air supply pipe 12, the elastic force that diaphragm 22 overcomes spring 24 is compressed.Because the action of this diaphragm 22, valve is opened thereby flowrate control valve 28 is depressed, and pressurized air is supplied in the air supply pipe 12 with certain flow through throttle orifice 26.Pushing liquid level in the air supply pipe 12 by this pressurized air, finally is that the lower end from air supply pipe 12 emits pressurized air, becomes bubble and rise in liquid 14, is released in the atmosphere.Along with the liquid level reduction of the liquid 14 in the gas outlet 12, the air pressures in the air supply pipe 12 raise, and therefore, can record the liquid level of liquid 14 by the air pressure in the measurement air supply pipe.Pressurized air was being begun to supply to air supply pipe 12 originally, and flowrate control valve 28 is depressed more greatly, and compressed-air actuated flow is big, and the opening quantitative change that is pressed down flowrate control valve 28 along with the liquid level in the air supply pipe 12 is little, thereby flow also diminishes.When bubble is emitted measuring liquid level, from the lower end constant basis constant basis of air supply pipe emit pressurized air.Like this, air purge head 20 has just become constant flow mechanism.
In Figure 14, pressurized air is supplied to the above-mentioned pipeline 30 from compressor 34.Between compressor 34 and pipeline 30, clamping ship internal adjuster 36 and air supply part 40.Ship internal adjuster 36 will be adjusted to for example 7kg/cm from the compressed-air actuated pressure that compressor 34 is sent
2About.Air supply part 40 is disposed in the pulpit 38, has cut-off valve 42, filtrator 44, regulator 46, pressure gauge 48 successively from compressor 34 1 sides.In pulpit 38, dispose transfer valve 50, gas-electric transducer 52, display 58.Gas-electric transducer 52 detects air pressures and it is transformed into electric signal, have pressure transducer 54 with according to the output control of this pressure transducer 54 control circuit board 56 by the shown atmospheric pressure value of display 58.Transfer valve 50 is used for like that the air pressure of air supply pipe 12 being led as shown to the form of gas-electric transducer 52 with by the gaseous tension that puts on gas-electric transducer 52 being switched to the zero correction state that atmosphere is opened wide from shown position to clockwise direction rotating operation 90 degree.
Transfer valve 50 is when being in switching state shown in Figure 14, and the air pressure in the air supply pipe 12 puts on the pressure transducer 54.As previously mentioned, this air pressure is relevant with the liquid level of liquid 14 in being stored in fluid box 10.Pressure transducer 54 outputs are corresponding to the electric signal that is applied to the air pressure on the sensor.After this electric signal is carried out display 58 in control basal plate 56 liquid level shows needed processing, demonstrate liquid level by indicator 58.
Adopt the existing air bubble type liquid level gauge of above explanation, in order to supply with pressurized air a certain amount ofly, and have the air purge head that comprises diaphragm, spring, flowrate control valve, thereby have complex structure, be out of order easily, problem that cost is also high to air supply pipe.In addition, owing to must supply with pressurized air to air supply pipe from the pressurized air supply source usually, compressed-air actuated consumption is many, and, produce pulsation owing to emit pressurized air, this arteriopalmus reaches pressure transducer and displayed value is beated.
Summary of the invention
The present invention finishes for the problem that solves above-mentioned existing air bubble type liquid level gauge and exist, and its purpose is to provide simple structure, non-fault, air bubble type liquid level gauge that cost is low.Another object of the present invention is to provide to reduce pressurized air consumption figure, pressurized air pulse free, displayed value does not have the air bubble type liquid level gauge of beating and can carry out stable demonstration.
The air bubble type liquid level gauge that another purpose of the present invention is to provide the loading pattern of the fluid box of being imagined in advance by execution or the automatic control program of the adjustment of the switching of the pattern setting trace routine of unloading and pressurized air quantity delivered is measured.
Another purpose of the present invention is to provide the electric treatment or the control of the enforcement that can carry out above-mentioned automatic control program in the pulpit and signal Processing etc., does not have electrical equipment on the deck, from the air bubble type liquid level gauge of the condition that satisfies safe anti-explosion in essence.
Another purpose of the present invention is to be provided in the air bubble type liquid level gauge that uses a plurality of solenoid valves, in order to reduce the air bubble type liquid level gauge that can use many communications and liaison fishplate bar man-hour is set.
Air bubble type liquid level gauge of the present invention has submerge air supply pipe in the liquid in the fluid box of its bottom at least, pressurized air is supplied to pressurized air supply source in the air supply pipe, the pressure transducer of the gaseous tension in the instrumentation air supply pipe, the air bubble type liquid level gauge that shows the display part of the liquid level in the aforesaid liquid case based on the detection signal of pressure transducer, its topmost being characterised in that has switching from first solenoid valve of pressurized air supply source to the pressurized air supply passageway of air supply pipe, with second solenoid valve that opens and closes the gaseous tension detection path from the air supply pipe to the pressure transducer.
Liquid level gauge of the present invention is the air bubble type liquid level gauge with first solenoid valve as described above and second solenoid valve, it is characterized in that, has many communications and liaison fishplate bar (manifold) that the mat woven of fine bamboo strips one solenoid valve and second solenoid valve can be set, this many communications and liaison fishplate bar comprises having many communications and liaison of master fishplate bar that the air that links to each other with the pressurized air supply source is supplied with stream, and shunt colligator all-in-one-piece with this master and assist many communications and liaison fishplate bar, the air intake side of first solenoid valve can be supplied with stream with the air of main many communications and liaison fishplate bar by auxiliary shunt and be connected, and above-mentioned auxiliary shunt has the air inflow side of the set a plurality of solenoid valves that are connected in series and the air flue of air out side, the air flue that is communicated with above-mentioned pressurized air supply passageway, with the air flue that is communicated with above-mentioned gas pressure detection path.
By opening first solenoid valve pressurized air is supplied to pressure rises in air supply pipe, the air supply pipe from the pressurized air supply source.When the liquid level in the air supply pipe dropped to the bottom of air supply pipe, the pressurized air in the air supply pipe escaped in the liquid with blister, and the gaseous tension in the air supply pipe has become the gaseous tension corresponding to liquid level.By closing first solenoid valve, opening second solenoid valve and detect air pressure in the air supply pipe, based on the liquid level of detection signal in display part demonstrates fluid box with pressure transducer.Owing to use solenoid valve to replace the flowrate control valve that uses in the existing air bubble type liquid level gauge, thereby can obtain the air bubble type liquid level gauge that unitary construction is simple, fault is few, cost is low.
Solenoid valve can be controlled its action by automatic control program, does not need manual operation.In addition, because the control action that automatic control program produces can carry out, not need to be provided with above deck electrical equipment in the pulpit, can be from satisfying the condition of safe anti-explosion in essence.Also have, by implementing to imagine the loading mode of fluid box in advance or the automatic control program of the adjustment that the unloading mode is set the pressurized air quantity delivered can be measured.
Can reduce compressed-air actuated consumption, non-compressed air pulsation, can carry out displayed value do not have beat, stable demonstration.
Employing is arranged at the present invention on the shunt with solenoid valve, even on each fluid box of a plurality of fluid boxes, be provided with under the situation of air bubble type liquid level gauge, also there is no need to set pipeline to each air bubble type liquid level gauge from the pressurized air supply source, main many communications and liaison fishplate bar can be used as common many communications and liaison fishplate bar, auxiliary many communications and liaison fishplate bar is set in the suitable position of main many communications and liaison fishplate bar, because as long as installation electromagnetical valve and dispose pipeline to air supply pipe thereon disposes so can simplify pipeline.Because comprising the air that is connected in the pressurized air supply source supplies with many communications and liaison of master fishplate bar of stream and is incorporated into the auxiliary shunt of this many communications and liaison of master fishplate bar integratedly, on auxiliary many communications and liaison fishplate bar, carry a plurality of solenoid valves, so uses such as changeable one-tenth " blowing model ", " measurement patterns ".
Description of drawings
Fig. 1 is the system diagram of first embodiment of expression air bubble type liquid level gauge of the present invention.
Fig. 2 is the figure of the action of expression first embodiment, (a) be the time diagram of expression pattern, (b) being the time diagram that expression pressure changes, (c) is the synoptic diagram of the air supply pipe under the expression liquid level decline running, (d) is the synoptic diagram that the expression bubble is emitted air supply pipe under the operating condition.
Fig. 3 is the figure of the on-off action in each pattern of each solenoid valve of expression first embodiment.
Fig. 4 is the figure that is illustrated among first embodiment situation that the pressure when blowing model switches to measurement pattern changes.
Fig. 5 is the system diagram of second embodiment of expression air bubble type liquid level gauge of the present invention.
Fig. 6 is the system diagram of the 3rd embodiment of expression air bubble type liquid level gauge of the present invention.
Fig. 7 is the figure of the on-off action in each pattern of each solenoid valve of expression the 3rd embodiment.
Fig. 8 is the system diagram of the 4th embodiment of expression air bubble type liquid level gauge of the present invention.
Fig. 9 is the figure of the action of expression the 4th embodiment, (a) be the time diagram of expression pattern, (b) being the time diagram that expression pressure changes, (C) is the synoptic diagram of the air supply pipe under the liquid level decline running, (d) is the synoptic diagram that bubble is emitted the air supply pipe under the operating condition.
Figure 10 is illustrated among the 4th embodiment figure of the pressure changing when blowing model switches to measurement pattern.
Figure 11 is the system diagram of the 5th embodiment of expression air bubble type liquid level gauge of the present invention.
Figure 12 is the system diagram of the 6th embodiment of expression air bubble type liquid level gauge of the present invention.
Figure 13 be a plurality of solenoid valves of expression and with the figure of the generic instance of many communications and liaison fishplate bar of its combination, (a) be the synoptic diagram of the example of a plurality of solenoid valves of expression, (b) be the synoptic diagram of the example of many communications and liaison of expression fishplate bar.
Figure 14 is the system diagram of the example of the existing air bubble type liquid level gauge of expression.
Figure 15 is the longitudinal diagram that the inside of the air purge head in the above-mentioned existing air bubble type liquid level gauge of expression constitutes.
Embodiment
Bottom describes with reference to the embodiment of accompanying drawing to air bubble type liquid level gauge of the present invention.And, give identical symbol to the component part identical with the formation of conventional example shown in Figure 14.
[first embodiment]
In Fig. 1, in the fluid box 10 of boats and ships, storing the liquid 14 of oil, water etc.Roof upper face side at fluid box 10 is being connected pipeline 30 by vertical tube joint 16 with flange 60.Different with aforementioned conventional example is that the air purge head is not set.Retaining valve can be set as required here.Pipeline 30 for example can be the pipeline on the ship deck, is connected in the many communications and liaison fishplate bar 64 that is disposed in the pulpit 38.Pipeline 30 is by the open and close controlling of first, second solenoid valve 65,66, can play pressurized air and supply with effect with pipeline, also can play the effect of the pipeline that is used to take out the signal air simultaneously.With the form that hangs down to the bottom surface of fluid box 10 air supply pipe 12 being installed from above-mentioned drive pipe shoe 16, submerges in the liquid 14 in the fluid box 10 in air supply pipe 12 bottoms.
Above-mentioned many communications and liaison fishplate bar 64 is pre-formed and is useful on the hole and the mutual airflow through hole that is connected with the pipeline of outside with the solenoid valve of being installed that a plurality of solenoid valves are installed.In this embodiment, 3 solenoid valves 65,66,67 are installed on shunt 64.Control basal plate 56 its actions of control that each solenoid valve is had by gas-electric transducer 52.Thereby each solenoid valve moves the inflow side that makes air by the excitation drive coil to a direction to be communicated with outlet side, when the non-excitation of drive coil, moves it inflow side and the outlet side that interdicts air by elastic force pressure, constructs fairly simple.Many communications and liaison fishplate bar 64 have each solenoid valve 65,66,67 that is connected in series the airflow through hole, make the airflow through hole branch of 65,66 of each solenoid valves and be connected in above-mentioned pipeline 30 the airflow through hole, make the airflow through hole branch of 66,67 of solenoid valves and be connected to the airflow through hole of pipeline of the pressure transducer 54 of gas-electric transducer 52.In addition, also have the air inflow side that connects solenoid valve 65 with from the airflow through hole of the pipeline of air supply part 40 with the airflow through hole of the air out side direction atmosphere opening of solenoid valve 67.
The same with conventional example shown in Figure 14, have compressor 34 as the pressurized air supply source, between compressor 34 and many communications and liaison fishplate bar 64, clamping ship internal adjuster 36 and air supply part 40.Ship internal adjuster 36 can be adjusted to for example 7kg/cm with the compressed-air actuated pressure of sending from compressor 34
2 Air supply part 40 is disposed in the pulpit 38, from compressor 34 1 sides cut-off valve 42, filtrator 44, regulator 46, pressure gauge 48 is arranged successively.In pulpit 38, be provided with gas-electric transducer 52, display 58.Gas-electric transducer 52 detects air pressure and it is transformed into electric signal, has pressure transducer 54 and exports the control circuit board 56 of control by the gaseous tension indicated value of display 58 indications corresponding to this pressure transducer 54.As previously mentioned, the airflow through hole branch that solenoid valve is 66,67, and by pipeline connection pressure transducer 54.Control circuit board 56 has the detection output of computing pressure transducer 54 and it is transformed into liquid level in the fluid box 10, liquid level is presented at calculation function on the display 58.Control circuit board 56 has also been installed the software of the on-off action of controlling each solenoid valve 65,66,67.
Bottom illustrates the action of above-mentioned first embodiment.By the on-off action state of 3 solenoid valves 65,66,67, as shown in Figure 3, air supply model, air stop mode arranged, measure and press atmosphere to emit these 3 kinds of patterns of pattern.So-called " air supply model " is meant from the pressurized air supply source and supplies with compressed-air actuated pattern, i.e. " blowing model " to air supply pipe 12; Institute Weihe " air stop mode " is meant the supply that stops air and measures the pattern of liquid level, i.e. " measurement pattern ", so-called " measure and press atmosphere to emit pattern " is to instigate the pressurized air that puts on pressure transducer to form atmospheric pressure to atmosphere opening, and being used to make the indicated value of indicator 58 at this moment is the pattern of adjusting at zero point of 0.In Fig. 3, SV1 refers to first solenoid valve 65, and SV2 refers to second solenoid valve 66, and SV3 refers to the 3rd solenoid valve 67.
In " blowing model ", first solenoid valve 65 is opened the pressurized air supply passageway, and the gaseous tension detection path that second closed electromagnetic valve links to each other with pressure transducer supplies to air supply pipe 12 with pressurized air.In " air feed stop mode ", first solenoid valve, 65 closes compression air supply passageways, thus only second solenoid valve 66 is opened and is opened above-mentioned gas pressure detection path, and the gaseous tensions in the air supply pipe 12 put on the pressure transducer 54 of gas-electric transducer 52.In " measure and press atmosphere to emit pattern ", only the 3rd solenoid valve 67 is opened, and the gaseous tension that puts on the pressure transducer 54 is identical with atmospheric pressure.
As shown in Figure 2, only first solenoid valve " blowing model " opened and only second solenoid valve " measurement pattern " opened are by switching controls alternately off and on.In Fig. 2 (a), " a1 " represents initial blowing model, represents the next measurement pattern of this blowing model a1 with " b1 "." an " represents n blowing model, and " bn " is n measurement pattern.Before being about to begin to blowing model, liquid level in the air supply pipe 12 is an equal height with the liquid level that is stored in the liquid in the fluid box, make pressure rises in the air supply pipe 12, the such reduction shown in the liquid level image pattern 2 (c) in the air supply pipe 12 by carrying out blowing model.Because blowing model and measurement pattern are hocketed, air feed begins originally as the left side of Fig. 2 (b) shown in, the air pressure stage rising in the air supply pipe 12.
When liquid level reaches the bottom of air supply pipe 12 in pressure rises in the air supply pipe 12 and the air supply pipe 12, such shown in Fig. 2 (d), pressurized air spills from the bottom of air supply pipe 12, becomes bubble and rise in the liquid 14 of fluid box 10, emits in atmosphere.Thereby the air pressure in the air supply pipe 12 has become the air pressure corresponding to the liquid level (degree of depth) of the liquid 14 of fluid box 10, as long as the horizontal no change of liquid 14, the air pressure in the air supply pipe 12 is no change also.Therefore, in measurement pattern,, can measure the liquid level of liquid 14 at this moment by reading measured value no change measured value constantly.Descend situation in the running of liquid level in mark " I " the expression air supply pipe 12 in Fig. 2 (b), mark " II " expression from air supply pipe 12 emit bubble turn round, can measure the situation in the running of liquid level of liquid 14.In addition, aforementioned mark " an " is represented just to have switched to bubble and is emitted running blowing model afterwards, and mark " bn " expression has just switched to emits bubble running measurement pattern afterwards.
Preferably air feed begins originally the liquid level running I that descends and finishes at short notice, switches to the II that emits the bubble running as early as possible.Therefore, shown in a1, the b1 of Fig. 2 (a), control the action of aforementioned first, second solenoid valve 65,66 like that.So that the measurement pattern that hockets in the operating time ratio of blowing model and it is long the duration of runs, switching to after bubble emits running, can supply with pressurized air to the degree that can keep the pressure in the air supply pipe 12, therefore, such action of controlling first, second solenoid valve 65,66 shown in " an ", " bn " is so that the duration of runs in the operating time ratio blowing model in the measurement pattern is long.In addition, stable as measured value, can consider that shown in the right half part of Fig. 2 (a) and (b) not only the duration of runs in the operating time ratio blowing model in the measurement pattern is long; And the cycle of extended blowing model and measurement pattern, do not carry out invalid air feed.
The actual grade of setting the liquid 14 in the fluid box 10 now is Hm.Because the pipeline on the ship deck is long, therefore in by the pressurized air in this pipeline, to produce pressure loss Δ P.Thereby as considering the pressure with the aforementioned many communications and liaison fishplate bar 64 in the air feed mode operation, then the pressure in A1, P2 hole of the upstream side of second solenoid valve 66 uprises, becomes
(H×0.1+ΔP)〔kg/Cm
2〕。
Thereby,, reach the stable spended time that needs at the pressure that is connected in the Ps hole on the pressure transducer 54 when blowing model switches to measurement pattern.In the oscillogram shown in Fig. 2 (b), when switching to measurement pattern, the pressure Δ P that only rises then reduces reposefully and reaches stable.
Therefore, as shown in Figure 4, the pressure at Ps hole place in the acceptable precision scope, the suitable pressure of native 1.0%FS for example
From H * 0.1+ Δ P
During decline, on display 58, represent the pressure at place, Ps hole with the depth of water.For example, under the situation of H=3, from 3+0.03 (kg/cm
2) be shown in display 58 when descending.In other words, under measurement pattern, by the experiment value forecast pressure change of considering in advance to be related to because of the key element of the level of the pressure loss that increases and decreases to the distance of horizontal detection portion from the pulpit and horizontal detection portion, add the read value of its correction and be positioned at the correct liquid level of range of allowable error from the demonstration constantly of dividing a word with a hyphen at the end of a line to measurement pattern by demonstration.Bring into use after the liquid level gauge, be after boats and ships set sail, also can make to have the learning ability that automatically to revise based on measured value.In Fig. 4, T1 is the start time of expression blowing model, and T2 is that expression can be allowed the needed time of measurement from being carved into when measurement pattern is divided a word with a hyphen at the end of a line, and T3 represents to get off the needed time to complete stability.
Closing first, second solenoid valve 65,66, opening in " measure and press the atmosphere its open mode " of the 3rd solenoid valve 67, because it is identical with atmospheric pressure to put on the air pressure of pressure transducer 54, the indicated value of display 58 at this moment is 0.Promptly, measuring the pressure atmosphere pattern of emitting is the pattern that is used for the adjustment at zero point.
As adopt first embodiment of above explanation, compressed-air actuated flow adjustment not only can be controlled but also not needed to be provided with the member that needs the such delicate switch control of flow rate regulating valve by the open and close of solenoid valve, therefore can obtain simple structure, cheapness, air bubble type liquid level gauge that fault is few.Owing to switching to measurement pattern from blowing model and measuring, compressed-air actuated consumption reduces, and can carry out high-precision level gauging.
The air bubble type liquid level gauge of the foregoing description is arranged on each fluid box, and the air supply part 40 of each liquid level gauge, many communications and liaison fishplate bar 64, gas-electric transducer 52, indicator 58 are disposed in the pulpit 38 in the lump, carries out centralized control and concentrates supervision.Loading mode or unloading mode that the automatic control program of each solenoid valve 65,66,67 can be imagined fluid box preestablish, and can carry out the switching of trace routine, the adjustment of compressed-air actuated quantity delivered by carrying out automatic control program.
[second embodiment]
Bottom illustrates second embodiment shown in Figure 5.The difference of second embodiment and first embodiment is, from disposing the throttle orifice 72 of limit compression air mass flow as the compressor 34 of pressurized air supply source to the pressurized air supply passageway of solenoid valve 65 through ship internal adjuster 36 and air supply part 40.Throttle orifice 72, in many communications and liaison fishplate bar 64, be disposed at the compressed air inlet place of first solenoid valve 65.Because other the formation and the control of solenoid valve 65,66,67 are basically the same as those in the first embodiment; Its explanation of Therefore, omited.
Adopt the air bubble type liquid level gauge of second embodiment, it is diminished, can reduce by being configured in the compressed-air actuated aforementioned pressure loss Δ P in the pipeline on the ship deck owing to limited the compressed-air actuated flow that flows into first solenoid valve 65 by throttle orifice 72.Thereby, stopping air feed and switch to after the measurement pattern from blowing model, the air pressure in Ps hole can be stablized at short notice, has to wait long the advantage that can measure the air pressure in the air supply pipe 12.In addition, the same with first embodiment, can improve the precision that reads of instrumentation value by the calculation process of control part.
[the 3rd embodiment]
Fig. 6 shows the 3rd embodiment of air bubble type liquid level gauge of the present invention.The 3rd embodiment is characterised in that, disposes the 4th solenoid valve 70 side by side with first solenoid valve 65 of second embodiment.More exactly, on the part of throttle orifice 72 and first solenoid valve 65 that is connected in series, be connected the 4th solenoid valve 70 side by side.As in first embodiment, adding the 4th solenoid valve 70, the 4th solenoid valve 70 directly is connected with first solenoid valve 65.As shown in Figure 7, the 4th solenoid valve 70 carries out open and close controlling by control basal plate 56 simultaneously and with first solenoid valve 65 equally with first solenoid valve 65.But, the 4th solenoid valve 70 is opened and closed with first solenoid valve 65, along with liquid level in the air supply pipe 12 descends, pressurized air begins to overflow from the bottom of air supply pipe 12, therefore the 4th solenoid valve 70 can be controlled as closed condition.Because it is identical with first embodiment, second embodiment with control that other constitute, its explanation of Therefore, omited.
Adopt the air bubble type liquid level gauge of the 3rd embodiment, owing to have the 4th solenoid valve 70, the liquid levels in the air supply pipe 12 are descended rapidly, can shorten from the action of air bubble type liquid level gauge and begin the time that to measure the liquid level in the fluid box to becoming.In addition, under situation such as make that owing to shaking of boats and ships etc. liquid 14 is invaded in the air supply pipes 12, can obtain the liquid 14 that make in the air supply pipe 12 effects of discharges rapidly.Also have, the same with first embodiment, improve the reading accuracy of instrumentation value by the calculation process of control part.
[the 4th embodiment]
Fig. 8 represents the 4th embodiment of air bubble type liquid level gauge of the present invention.This embodiment is first embodiment to be appended pipeline constitute.That is, the compressed air outlet side opening A1 of the first solenoid valve 65 air intake side opening P2 that is connected in air supply pipe 12, the second solenoid valves 66 by pressurized air feed path 30 detects path 32 by air pressure and is connected in air supply pipe 12.In first embodiment, first, second solenoid valve 65,66 is connected directly; It is branch and be connected in air supply pipe 12 by a pipeline midway, and in the 4th embodiment, as mentioned above, 65,66 of first, second solenoid valves block, respectively by pressurized air feed path 30, be connected in air supply pipe 12 by air pressure detection path 32 simultaneously.In addition the formation with first embodiment is identical.Symbol 64 many communications and liaison of expression fishplate bars.
Adopt the 4th embodiment, detect the air pressure that is applying at ordinary times in the path 32 in the air supply pipe 12 at air pressure, pressurized air does not flow.Therefore, even air pressure detects the long aforesaid pressure loss Δ P that also can not take place in the air pressure detection path 32 in path 32, as shown in Figure 9, when blowing model switches to measurement pattern, can there be the pulsation shape rising that is equivalent to pressure loss Δ P in the pressure in air pressure detects path 32.As shown in figure 10, in air supply model, i.e. " blowing model " running, when pressurized air spills after air supply pipe becomes bubble, only be that the interior air pressure of air supply pipe is in the change that rises and falls, as switching to air stop mode i.e. " measurement pattern ", the pressure that pressure in the air supply pipe 12 and air pressure detect in the path 32 is stable immediately.Adopt the air bubble type liquid level gauge of the 4th embodiment, have in many communications and liaison fishplate bar 64 and 12 shortcomings that increase a pipeline of air supply pipe, but as switch to measurement pattern from blowing model and can be directly detect the interior pressure of air supply pipe 12 with pressure transducer 54, demonstrate the liquid level of liquid at display 58, so do not need the stand-by period to measure rapidly.In addition, can make the interior pressure stability of air supply pipe immediately owing to switch to measurement pattern, so can improve the measuring accuracy of liquid level.
In the embodiment of the air bubble type liquid level gauge of above explanation, use many communications and liaison fishplate bar that a plurality of solenoid valves are connected with each other, if but do not use many communications and liaison fishplate bar, in the construction pipe arrangement cost difficult point in man-hour is then arranged.For example, in Fig. 1, Fig. 5, embodiment shown in Figure 6, must the outlet side opening A1 of first solenoid valve 65 and the inlet side opening P2 of second solenoid valve 66 be coupled together with pipeline, in Fig. 1, Fig. 5, Fig. 6 and embodiment shown in Figure 8, the outlet side opening A2 of the mat woven of fine bamboo strips two solenoid valves 66 and the inlet side opening P3 of the 3rd solenoid valve 67 must be coupled together with pipeline, have the pipe arrangement cost problem in man-hour.
Therefore, in various embodiments of the present invention, used many communications and liaison fishplate bar.The inventor has produced and has used the many communications and liaison fishplate bar 642 shown in diagram 13 (b), and the idea of a plurality of solenoid valves is set shown in Figure 13 (a) like that thereon.Many communications and liaison fishplate bar 642 shown in Figure 13 is many communications and liaison fishplate bars of the common formation of being considered, the air flue that have air intake side opening P, air out side opening R, is communicated with respectively with these holes.The part that first, second, third solenoid valve 65,66,67 is set is arranged on many communications and liaison fishplate bar 642, when these solenoid valves being set at assigned position, the inlet side opening P1 of each solenoid valve, P2, P3 are communicated with the inlet side opening of many communications and liaison fishplate bar 642, and the outlet side opening A1 of each solenoid valve, A2, A3 are communicated with the outlet side opening R of many communications and liaison fishplate bar 642.In other words, many communications and liaison fishplate bar 642 connects a plurality of solenoid valves side by side.
Many communications and liaison fishplate bar of the common consideration shown in Figure 13, owing to be not that a plurality of solenoid valves are connected in series, and owing to be not to carry out branch form, do not switch to aforesaid " blowing model " with connecting the mutual air flue of solenoid valve, " measurement pattern " and " measure and press atmosphere to emit pattern " used.
Therefore, in the present invention, the structure of common many communications and liaison fishplate bar of considering is improved,, can be used many communications and liaison fishplate bar and can reduce the man-hour that usefulness is set as particular structure for the air bubble type liquid level gauge that is used to use a plurality of solenoid valves.Air bubble type liquid level gauge to the 5th embodiment, the 6th embodiment describes below.
[the 5th embodiment]
In Figure 11, component part with fluid box 10, air supply pipe 12, pipeline 30, compressor 34, ship internal adjuster 36, pulpit 38, air supply part 40, first, second, third solenoid valve 65,66,67, gas-electric transducer 52, pressure transducer 54 etc. of boats and ships is with embodiment illustrated in fig. 1 identical.Simplification is to the explanation of identical component part, only the formation as many communications and liaison fishplate bar of the peculiar component part of present embodiment stressed.
Above-mentioned many communications and liaison fishplate bar is made of main many communications and liaison fishplate bar 63 and auxiliary many communications and liaison fishplate bar 64, be pre-formed be used to that the air flue of a plurality of solenoid valves is installed and be connected in the solenoid valve installed each other with the air flue of outside pipeline.Main many communications and liaison fishplate bar 63 is combined as a whole with auxiliary many communications and liaison fishplate bar 64.Main many communications and liaison fishplate bar 63 is used as common many communications and liaison fishplate bar, appropriate location on main many communications and liaison fishplate bar 63 is provided with auxiliary many communications and liaison fishplate bar 64, and one group of solenoid valve and the pipe arrangement pressure transducer 54 to air supply pipe 12 and pipe arrangement to gas-electric transducer 52 is being set thereon.In other words, on boats and ships, even on each fluid box of a plurality of fluid boxes, be provided with under the situation of air bubble type liquid level gauge, main many communications and liaison fishplate bar 63 is provided with as common many communications and liaison fishplate bar, appropriate location on main many communications and liaison fishplate bar 63 is provided with auxiliary shunt 64, and the pipeline of one group of solenoid valve, configuration necessity is set thereon.Like this, can be reduced to draw on each of a plurality of air bubble type liquid level gauges and establish the so existing numerous and diverse pipe arrangement of pressurized air feeding pipe.
In the present embodiment, on auxiliary many communications and liaison fishplate bar 64,3 solenoid valves 65,66,67 are installed.Each solenoid valve, the control circuit board 56 that is had by gas-electric transducer 52 move control.Each solenoid valve is by the drive coil excitation is moved to a direction, thereby the inflow side and the outlet side that are communicated with air, when drive coil is non-excited state, move it by the elastic acting force of spring and interdict the inflow side and the outlet side of air, construct fairly simple.Auxiliary many communications and liaison fishplate bar 64 have each solenoid valve 65,66,67 that is connected in series air flue, make the air flue branch of 65,66 of solenoid valves and be connected to above-mentioned pipeline 30 air flue, make 66,67 of solenoid valves air flue branch, be connected in the air flue of the pipeline of the pressure transducer 54 of going to sky electric transducer 52.Main many communications and liaison fishplate bar 63 has an end and is connected in the air supply stream 68 from the pressurized air supply passageway of air supply part 40, the atmosphere opening stream 69 that an end is open to atmosphere.The other end of each air flue 68,69 becomes closed state.
When first solenoid valve 65 being arranged at auxiliary many communications and liaison fishplate bar 64, the hole P1 of the air inflow side of solenoid valve 65 supplies with stream 68 by the air that the air flue of assisting many communications and liaison fishplate bar 64 is connected in main many communications and liaison fishplate bar 63, and the hole A1 of the air out side of solenoid valve 65 is connected in the hole P2 of the air inflow side of second solenoid valve 66 by the air flue of auxiliary many communications and liaison fishplate bar 64.When second solenoid valve 66 being arranged at auxiliary many communications and liaison fishplate bar 64, its air out side opening A2 is connected in the hole P3 of the air inflow side of the 3rd solenoid valve 67 by the air flue of auxiliary many communications and liaison fishplate bar 64.If the 3rd solenoid valve 67 is arranged at auxiliary many communications and liaison fishplate bar 64, its air out side opening A3 is connected in the atmosphere opening stream 69 of main many communications and liaison fishplate bar 63 by the air flue of auxiliary many communications and liaison fishplate bar 64.
Identical with previous embodiment, have compressor 34 as the pressurized air supply source, between compressor 34 and many communications and liaison fishplate bar 64, clamping ship internal adjuster 36 and air supply part 40.Ship internal adjuster 36 can be adjusted to for example 7kg/cm with the compressed-air actuated pressure of sending from compressor 34
2About.Air supply part 40 is disposed in the pulpit 38, from compressor 34 orders cut-off valve 42, filtrator 44, regulator 46, pressure gauge 48 is arranged.In pulpit 38, dispose gas-electric transducer 52, display 58.Empty electric transducer 52 detects air pressure and it is transformed to electric signal, has pressure transducer 54 and according to the output control of this pressure transducer 54 control circuit board 56 by the air pressure displayed value of display 58 indications.As previously mentioned, be clipped on the air flue branch of the auxiliary many communications and liaison fishplate bar 64 between the solenoid valve 66,67, be connected in pressure transducer 54 by pipeline 61.Control circuit board 56, the detection of computing pressure transducer 54 output also is changed to liquid level in the fluid box 10 with it, has the calculation function that liquid level is shown in display 58.The software of the on-off action of each solenoid valve 65,66,67 of control also is installed in the control circuit board 56.
The action of above-mentioned the 5th embodiment, since identical with the action of first embodiment shown in Figure 1, its action specification of Therefore, omited.
Adopt the 5th embodiment of above explanation, even each fluid box at a plurality of fluid boxes is provided with under the situation of air bubble type liquid level gauge, do not need to set pipeline to each and every one air bubble type liquid level gauge from compressor 34 as the pressurized air supply source yet, can be with main many communications and liaison fishplate bar 63 as using with many communications and liaison fishplate bar jointly, at the position configuration auxiliary many communications and liaison fishplate bar 64 adjacent with main many communications and liaison fishplate bar 63, carry one group of solenoid valve and pipe arrangement thereon and get final product, can simplify the pipeline configuration like this to air supply pipe 12 and pressure transducer 54.In addition, because having the air that is connected in the pressurized air supply source supplies with many communications and liaison of master fishplate bar 63 of stream 68, will assist many communications and liaison fishplate bar 64 one to be incorporated into this many communications and liaison of master fishplate bar 63, a plurality of solenoid valves are installed on auxiliary many communications and liaison fishplate bar 64, no matter whether use many communications and liaison fishplate bar, all changeable is that " blowing model ", " measurement pattern " etc. are used.Main many communications and liaison fishplate bar 63 is fixed with the simple form with air supply stream 68, it is become be suitable for one group of solenoid valve combination and to the structure of the pipe arrangement of outside, the formation that auxiliary many communications and liaison fishplate bar 64 can be constituted corresponding to corresponding air bubble type liquid level gauge neatly.
[the 6th embodiment]
Bottom illustrates the 6th embodiment shown in Figure 12.The 6th embodiment is to append pipeline to constitute on the 5th embodiment.Promptly, the compressed air outlet side opening A1 of first solenoid valve 65 is connected in air supply pipe 12 by the air flue of auxiliary many communications and liaison fishplate bar 641 and the air inflow side opening P2 that pressurized air supply passageway 30 is connected in air supply pipe 12, the second solenoid valves 66 by the air flue and the air pressure detection path 32 of assisting many communications and liaison fishplate bar 641.In the 5th embodiment, first, second solenoid valve 65,66 is connected by the air flue of auxiliary many communications and liaison fishplate bar 64, way branch and be connected to air supply pipe 12 therein by a pipeline 30, and in the 6th embodiment, as mentioned above, blocked 65,66 of first, second solenoid valves, respectively by pressurized air supply passageway 30, be connected in air supply pipe 12 by air pressure detection path 32.In order to realize this formation, auxiliary many communications and liaison fishplate bar 641 has, be used for air out side opening A1 with first solenoid valve 65 be connected in the pipeline 30 that air supply pipe 12 is communicated with air flue and be used for the air flue that pipeline 32 that air inflow side opening P2 with second solenoid valve 66 is connected in air supply pipe 12 is communicated with.On auxiliary many communications and liaison fishplate bar 641, do not exist the air of the air out side opening A1 of direct connection solenoid valve 65 and second solenoid valve 66 to flow into air flue between the side opening P2.In addition the formation with the 5th embodiment is identical.
Adopt the 6th embodiment, the air pressure in the usual air supply pipe 12 puts on the air pressure detection path 32, and pressurized air does not flow.Therefore, even air pressure detection path 32 is longer, the aforementioned pressure loss Δ P in the air pressure detection path 32 can not take place, when blowing model switches to measurement pattern, the pressure in the air pressure detection path 32 can not produce the pulsation that is equivalent to pressure loss Δ P.Thereby, increased a shortcoming of assisting the pipeline between many communications and liaison fishplate bar 641 and the air supply pipe 12 though have, but as when blowing model switches to measurement pattern, can detect the pressure of air supply pipe 12 immediately by pressure transducer 54, can make the liquid level of liquid be shown in display 58, therefore not need the stand-by period promptly to measure.In addition, when switching to " measurement pattern " because air supply pipe 12 internal pressures are stable immediately, thereby can obtain high-precision level gauging.The situation of second embodiment also is, owing to main many communications and liaison fishplate bar 63 and auxiliary many communications and liaison fishplate bar 641 are arranged, so can obtain the effect same with first embodiment.
Air bubble type liquid level gauge of the present invention, the loading that can be suitable as the boats and ships of oil tanker, liquefied natural gas (LNG) carrier, carrier etc. stores the liquid level instrumentation of the various fluid boxes of fluid box, ballast box, clear water fluid box etc., also can be used as Draft Gauge uses, also can be applicable to simultaneously the fluid box of boats and ships conveying device in addition, be arranged on the fluid box of ground various uses.
As the gas that supplies in the air supply pipe, in each embodiment, describe with air, but according to the loading kind, also can also be gas beyond the air.
Claims (18)
1. air bubble type liquid level gauge, this air bubble type liquid level gauge have bottom at least submerge air supply pipe in the liquid in the fluid box, with pressurized air supply to pressurized air supply source in the air supply pipe, in the instrumentation air supply pipe the pressure by air pressure sensor, show the display part of the liquid level in the aforesaid liquid case based on the detection signal of pressure transducer, it is characterized in that, have: open and close first solenoid valve of pressurized air supply passageway, open and close second solenoid valve of the gaseous tension detection path from the air supply pipe to the pressure transducer from the pressurized air supply source to air supply pipe.
2. air bubble type liquid level gauge as claimed in claim 1 is characterized in that, has the 3rd solenoid valve of the air pressure detection path that can open from the air supply pipe to the pressure transducer.
3. air bubble type liquid level gauge as claimed in claim 1 or 2 is characterized in that, by the on-off action of each solenoid valve of software control.
4. air bubble type liquid level gauge as claimed in claim 1, it is characterized in that, open the second closed electromagnetic valve air pressure detection path in the blowing model of pressurized air supply passageway at first solenoid valve, open the first closed electromagnetic valve pressurized air supply passageway in the measurement pattern of air pressure detection path at second solenoid valve.
5. air bubble type liquid level gauge as claimed in claim 1 is characterized in that, first solenoid valve and second solenoid valve are controlled as hocket blowing model and measurement pattern.
6. air bubble type liquid level gauge as claimed in claim 5, it is characterized in that beginning to be controlled as originally to air supply pipe supply pressurized air: the time of the time ratio measurement pattern of blowing model is long, after measured value has been stablized, be controlled as the time weak point of the time ratio measurement pattern of blowing model.
7. air bubble type liquid level gauge as claimed in claim 6 is characterized in that, in measurement pattern, is carved into measured value and measures after the stable stipulated time when the transfer through associating to measurement pattern.
8. air bubble type liquid level gauge as claimed in claim 1 is characterized in that, the throttle orifice of control compressed air require is set the pressurized air supply passageway from the pressurized air supply source to first solenoid valve.
9. air bubble type liquid level gauge as claimed in claim 1, it is characterized in that, be set up in parallel the 4th solenoid valve with first solenoid valve, supplied with beginning originally, be controlled as first solenoid valve and the 4th solenoid valve opens and closes simultaneously at the pressurized air till the measurement pattern operate as normal; When the measurement pattern operate as normal, be controlled as the 4th closed electromagnetic valve, first solenoid valve and second solenoid valve and alternately open and close.
10. air bubble type liquid level gauge as claimed in claim 1 is characterized in that, first solenoid valve and second solenoid valve are connected in series, and first solenoid valve and the second solenoid valve medial fascicle are also installed pipeline to air supply pipe.
11. air bubble type liquid level gauge as claimed in claim 1 is characterized in that, the compressed air outlet side of first solenoid valve is connected in air supply pipe by the pressurized air supply passageway, and the air intake side of second solenoid valve is connected in air supply pipe by the air pressure detection path.
12. air bubble type liquid level gauge, this air bubble type liquid level gauge has submerge air supply pipe in the liquid in the fluid box of bottom at least, pressurized air is supplied to pressurized air supply source in the air supply pipe, pressure by air pressure sensor in the instrumentation air supply pipe, the display part that shows the liquid level in the aforesaid liquid case based on the detection signal of pressure transducer, first solenoid valve of the pressurized air supply passageway of switching from the pressurized air supply source to air supply pipe, second solenoid valve of the air pressure detection path of switching from the air supply pipe to the pressure transducer, it is characterized in that
Has the many communications and liaison fishplate bar that to install above-mentioned first solenoid valve and second solenoid valve, above-mentioned many communications and liaison fishplate bar comprises having many communications and liaison of master fishplate bar that the air that is connected in the pressurized air supply source is supplied with stream, one is incorporated into auxiliary many communications and liaison fishplate bar of this many communications and liaison of master fishplate bar, and the air that the air inflow side of first solenoid valve is connected in main many communications and liaison fishplate bar by auxiliary many communications and liaison fishplate bar is supplied with the above-mentioned auxiliary many communications and liaison fishplate bar of stream and had the air inflow side of a plurality of solenoid valves installed of being connected in series and the air flue of air out side, be communicated to the air flue of above-mentioned pressurized air supply passageway, be communicated to the air flue of above-mentioned air pressure detection path.
13. air bubble type liquid level gauge as claimed in claim 12, it is characterized in that, auxiliary many communications and liaison fishplate bar can be installed the 3rd solenoid valve of the air pressure detection path that can open from the air supply pipe to the pressure transducer, and main many communications and liaison fishplate bar has the atmosphere opening stream that is communicated with the air out side of the 3rd solenoid valve by auxiliary many communications and liaison fishplate bar.
14., it is characterized in that, by the on-off action of each solenoid valve of software control as claim 12 or 13 described air bubble type liquid level gauges.
15. air bubble type liquid level gauge as claimed in claim 12, it is characterized in that, open the second closed electromagnetic valve air pressure detection path under the blowing model of pressurized air supply passageway at first solenoid valve, open the first closed electromagnetic valve pressurized air supply passageway under the measurement pattern of air pressure detection path at second solenoid valve.
16. air bubble type liquid level gauge as claimed in claim 12 is characterized in that, first solenoid valve and second solenoid valve are controlled so as to hocket blowing model and measurement pattern.
17. air bubble type liquid level gauge as claimed in claim 12, it is characterized in that, first solenoid valve and second solenoid valve are connected in series by auxiliary many communications and liaison fishplate bar, and auxiliary many communications and liaison fishplate bar makes the medial fascicle of first solenoid valve and second solenoid valve and installs and manage air supply pipe.
18. air bubble type liquid level gauge, this air bubble type liquid level gauge has submerge air supply pipe in the liquid in the fluid box of bottom at least, pressurized air is supplied to pressurized air supply source in the air supply pipe, pressure by air pressure sensor in the instrumentation air supply pipe, the display part that shows the liquid level in the aforesaid liquid case based on the detection signal of pressure transducer, first solenoid valve of the pressurized air supply passageway of switching from the pressurized air supply source to air supply pipe, second solenoid valve of the gaseous tension detection path of switching from the air supply pipe to the pressure transducer, it is characterized in that
Has the many communications and liaison fishplate bar that to install above-mentioned first solenoid valve and second solenoid valve, above-mentioned many communications and liaison fishplate bar comprises having many communications and liaison of master fishplate bar that the air that connects the pressurized air supply source is supplied with stream, auxiliary many communications and liaison fishplate bar that one is incorporated on this many communications and liaison of master fishplate bar constitutes, stream is supplied with by the air that auxiliary many communications and liaison fishplate bar is connected in main many communications and liaison fishplate bar in the air inflow side of first solenoid valve, and the air out side of first solenoid valve is connected in air supply pipe by auxiliary many communications and liaison fishplate bar and pressurized air supply passageway, the air inflow side of second solenoid valve is connected in air supply pipe by auxiliary many communications and liaison fishplate bar and air pressure detection path.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP283394/2004 | 2004-09-29 | ||
| JP2004283394A JP3992153B2 (en) | 2004-09-29 | 2004-09-29 | Bubble level gauge |
| JP303463/2004 | 2004-10-18 | ||
| JP2004303463A JP3983240B2 (en) | 2004-09-29 | 2004-10-18 | Bubble level gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1755333A true CN1755333A (en) | 2006-04-05 |
| CN100365395C CN100365395C (en) | 2008-01-30 |
Family
ID=37139343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100088704A Active CN100365395C (en) | 2004-09-29 | 2005-02-24 | Air bubble type liquid level gauge |
Country Status (4)
| Country | Link |
|---|---|
| JP (2) | JP3992153B2 (en) |
| KR (1) | KR100828697B1 (en) |
| CN (1) | CN100365395C (en) |
| HK (1) | HK1086880A1 (en) |
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| CN101858769A (en) * | 2010-05-19 | 2010-10-13 | 河海大学 | Weighing water level gauge |
| CN102012247A (en) * | 2010-10-27 | 2011-04-13 | 江苏科技大学 | Blowing level meter with flow and temperature compensation functions |
| CN104176007A (en) * | 2014-07-07 | 2014-12-03 | 江苏名和集团有限公司 | Method and system for monitoring abnormal change of fuel oil in fuel oil tank |
| CN104568051A (en) * | 2014-12-31 | 2015-04-29 | 东莞市海川博通信息科技有限公司 | Anti-condensation bubble type water level gauge |
| CN105021253A (en) * | 2015-07-17 | 2015-11-04 | 烟台东泽电气科技有限公司 | Bubble type liquid level remote-measuring system |
| CN105300471A (en) * | 2015-12-04 | 2016-02-03 | 重庆多邦科技股份有限公司 | Bubble liquid level detection device of industrial liquid level control system |
| CN105526988A (en) * | 2016-02-16 | 2016-04-27 | 唐山现代工控技术有限公司 | Using method of bubble type water gauge and bubble type water gauge device |
| CN107091668A (en) * | 2016-02-17 | 2017-08-25 | 姆萨西诺机器株式会社 | Hydraulic pressure determination unit and liquid level gauge |
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| JP4536680B2 (en) * | 2006-04-24 | 2010-09-01 | 住友重機械マリンエンジニアリング株式会社 | Ballast tank level and gas detection apparatus and method in a ship |
| CN100432676C (en) * | 2006-06-15 | 2008-11-12 | 王东升 | Fluid sensor |
| JP4995287B2 (en) * | 2010-01-14 | 2012-08-08 | ムサシノ機器株式会社 | Bubble level gauge |
| CN106525193B (en) * | 2016-12-26 | 2023-09-29 | 重庆美科华仪科技有限公司 | Bubble type water level gauge |
| CN110455372A (en) * | 2019-08-12 | 2019-11-15 | 深圳市宏电技术股份有限公司 | A kind of air bubble type liquid level gauge detection device, system and method |
| KR102243337B1 (en) * | 2020-08-26 | 2021-04-22 | 주식회사 티엔에스 | Level gauge through controlling open area of air gate hole |
| CN113431980B (en) * | 2021-07-02 | 2022-09-06 | 中国核电工程有限公司 | Crystallization device is prevented to gas blow pipeline, measurement system and spent fuel aftertreatment system blow |
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| CN101858769A (en) * | 2010-05-19 | 2010-10-13 | 河海大学 | Weighing water level gauge |
| CN101858769B (en) * | 2010-05-19 | 2012-01-04 | 河海大学 | Weighing water level gauge |
| CN102012247A (en) * | 2010-10-27 | 2011-04-13 | 江苏科技大学 | Blowing level meter with flow and temperature compensation functions |
| CN102012247B (en) * | 2010-10-27 | 2012-07-04 | 江苏科技大学 | Blowing level meter with flow and temperature compensation functions |
| CN104176007A (en) * | 2014-07-07 | 2014-12-03 | 江苏名和集团有限公司 | Method and system for monitoring abnormal change of fuel oil in fuel oil tank |
| CN104568051A (en) * | 2014-12-31 | 2015-04-29 | 东莞市海川博通信息科技有限公司 | Anti-condensation bubble type water level gauge |
| CN105021253A (en) * | 2015-07-17 | 2015-11-04 | 烟台东泽电气科技有限公司 | Bubble type liquid level remote-measuring system |
| CN105300471A (en) * | 2015-12-04 | 2016-02-03 | 重庆多邦科技股份有限公司 | Bubble liquid level detection device of industrial liquid level control system |
| CN105526988A (en) * | 2016-02-16 | 2016-04-27 | 唐山现代工控技术有限公司 | Using method of bubble type water gauge and bubble type water gauge device |
| CN107091668A (en) * | 2016-02-17 | 2017-08-25 | 姆萨西诺机器株式会社 | Hydraulic pressure determination unit and liquid level gauge |
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| Publication number | Publication date |
|---|---|
| JP3983240B2 (en) | 2007-09-26 |
| JP3992153B2 (en) | 2007-10-17 |
| JP2006113030A (en) | 2006-04-27 |
| KR20060028755A (en) | 2006-04-03 |
| JP2006098172A (en) | 2006-04-13 |
| HK1086880A1 (en) | 2006-09-29 |
| CN100365395C (en) | 2008-01-30 |
| KR100828697B1 (en) | 2008-05-09 |
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