CN103630154A - Measurement channel self-cleaning device used for immersion type instrument - Google Patents
Measurement channel self-cleaning device used for immersion type instrument Download PDFInfo
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- CN103630154A CN103630154A CN201210296712.3A CN201210296712A CN103630154A CN 103630154 A CN103630154 A CN 103630154A CN 201210296712 A CN201210296712 A CN 201210296712A CN 103630154 A CN103630154 A CN 103630154A
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Abstract
The invention discloses a passive self-cleaning device of a measurement instrument immersing into an incompressible liquid fluid medium, and the passive self-cleaning device is used for cleaning granular interferents adhered on an instrument measurement channel in long-term work. The device comprises the measurement channel 1 with a two-way trapezoid-shaped internal structure, wherein the measurement channel 1 is arranged in an internal part of an immersion type instrument shell 2 and two side surfaces of the measurement channel 1 are provided with openings which are used as an inlet 4 and an outlet 5 of the fluid medium. The measurement channel 1 presents to be the maximum internal diameter at the inlet 4 and the outlet 5, then gradually narrows towards the middle part of the measurement channel 1 which is provided with a measurement sensitive area 3 with the minimum internal diameter. When the measurement instrument is in use, the measured fluid medium flows in from the inlet 4 and flows out from the outlet 5. As the liquid medium has an incompressible characteristic, flow speed of the liquid medium is accelerated when the liquid medium flows through the narrowest part of the measurement channel 1, and a self-cleaning effect is realized in the measurement sensitive area 3 by the generated scouring force and the cleaning effect does not need to be driven by external energy. The passive self-cleaning device is applicable to passive self-cleaning of the immersion type instrument measurement channels of various liquid fluid media.
Description
Technical field
The present invention relates to a kind of cleaning device, particularly a kind of measurement passage self-stripping unit for immersion instrument.
Background technology
From domestic published instrument measurement passage automatic flushing device, great majority have adopted additional power device to produce the mode of cleanup action, the sensitive element of measuring sensitizing range to being installed on carries out mechanical cleaning (or simultaneously coordinating with chemical), removes the chaff interference deposition of measuring on sensitizing range.Embodiment comprises:
Gas jet (as the online pH meter potential electrode of Chinese utility model patent CN202041498U < < automatic flushing device > >);
Fluid pressure (as mono-kind of Chinese utility model patent CN201844989U < < possesses the industrial acidity meter > > of automatic flushing function);
Driving device turns brush (as Chinese utility model patent CN201997506U < < automatic flushing device > >);
Supersonic oscillations (as the miniature ultrasonic cleaning device > > of Chinese utility model patent CN200920254135 < < underwater optics analyzer) etc.
Above-mentioned automatic cleaning mode needs to consume additional power in the cleaning process of instrument measurement passage, and equipment needed thereby structure is comparatively complicated.
Do not using aspect the automatic flushing device of additional power, Chinese utility model patent CN2772646Y < < Eddying Whirl Automatic Flushing Device > > has provided a kind of baffle arrangement that three eddy current generation bodies are set on pipe flange that adopts, utilize baffle plate self to produce eddy current, do not use any power-equipment, probe to online components analysis instrument cleans, but because baffle plate and eddy current generation body have increased larger resistance, flow media pressure loss in pipeline is strengthened, the pressure that need to significantly add flow media in large pipeline, be unfavorable for equally energy-conservation.
Summary of the invention
Large, the baroque problem of cleaning device that the object of the invention is to consume energy in instrument measurement passage cleaning process for prior art, and provide a kind of new immersion instrument passive purging system structure.Be characterized in not using any power-equipment, utilize the flowing pressure of flow media itself poor, to measuring passage, automatically clean; The resistance of ducting is little simultaneously, does not need significantly to strengthen the pressure of flow media, is conducive to the energy-conservation of measuring system.
Technical scheme of the present invention is: the measurement channel setting of immersion instrument is in gauge internal, and at meter case both-side opening, is convenient to measured fluid liquid medium and flows into and flow out.Measuring sensor is installed on the measurement sensitizing range of measuring channel middle.Measure channel cross-section and be two-way swallow formula structure, measure passage and have maximum inner diameter at the both-side opening place of meter case, then narrow gradually in measuring sensitizing range, measuring, place, sensitizing range internal diameter is minimum.
During immersion instrumentation, measured medium due to flowing pressure poor in described instrument measurement passage uniflux, by being installed on the sensitive element of measuring sensitizing range, complete measurement effect.Due to the incompressibility of fluid liquid medium, it enters measures after passage along with the dwindling gradually of passage internal diameter, reaches Peak Flow Rate measuring sensitizing range; Through measuring behind sensitizing range, along with the increase gradually of passage internal diameter, fluid liquid medium recovers normal flow in the exit of measuring passage.In this way, fluid liquid medium is being measured sensitizing range generation scouring force, and the measuring sensor of measuring sensitizing range to being installed on plays self-cleaning effect, and this cleanup action drives without additional power device.
The present invention can be used for the immersion instrument measurement passage of various fluid liquid media to carry out passive self-cleaning.
Accompanying drawing explanation
Fig. 1 is immersion instrument measurement passage self-stripping unit structural representation.
Fig. 2 is A-A cut-open view of self-stripping unit.
Embodiment
As shown in Figure 1, a kind of measurement passage self-stripping unit for immersion instrument, measures passage 1, immersion meter case 2 and measurement sensitizing range 3 by flow media and forms.Meter case 2 is all immersed in measured liquid flow moving medium, measures the inside that passage 1 is positioned at meter case 2, and at two lateral openings of meter case 2, respectively as inflow entrance 4 and the flow export 5 of liquid flow moving medium.
Measure passage 1 inwall and there is two-way trapezoidal inner structure, the both ends open internal diameter of measuring passage 1 is greater than and narrows gradually in its middle part measures sensitizing range 3 internal diameters, and internal diameter size is relevant with the physical property of fluid liquid medium to the funtcional relationship of length variations with measuring channel axis.
Fluid liquid medium is being measured the interior uniflux of passage 1 because flowing pressure is poor, by any sensitive element that is installed on measurement sensitizing range 3, completes measurement effect.Due to the incompressibility of measured medium, flow through flow velocity maximum while measuring sensitizing range 3, the scouring force of generation plays self-cleaning effect to measuring sensitizing range 3, and this cleanup action drives without additional power device.
Claims (2)
1. the passive self-stripping unit for immersion instrument measurement passage, by fluid liquid Medium Measurement passage 1, immersion meter case 2 and measurement sensitizing range 3, formed, it is characterized in that meter case 2 is all immersed in fluid liquid medium, measure the inside that passage 1 is positioned at meter case 2, and at two lateral openings of meter case 2, fluid media (medium) is being measured the interior uniflux of passage 1, by any sensitive element that is installed on measurement sensitizing range 3, completes measurement effect.
2. the passive self-stripping unit for immersion instrument measurement passage according to claim 1, it is characterized in that measuring passage 1 has two-way trapezoidal inner structure: the both ends open internal diameter of measuring passage 1 is greater than and narrows gradually the internal diameter of measuring sensitizing range 3 in its middle part, make measured medium to measure passage 1 interior when mobile, due to its incompressibility, cause reaching maximum at the fluid media (medium) flow velocity of measuring sensitizing range 3, to measuring sensitizing range 3, play automatic cleanup action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210296712.3A CN103630154A (en) | 2012-08-20 | 2012-08-20 | Measurement channel self-cleaning device used for immersion type instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210296712.3A CN103630154A (en) | 2012-08-20 | 2012-08-20 | Measurement channel self-cleaning device used for immersion type instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103630154A true CN103630154A (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210296712.3A Pending CN103630154A (en) | 2012-08-20 | 2012-08-20 | Measurement channel self-cleaning device used for immersion type instrument |
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| CN (1) | CN103630154A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2717434A1 (en) * | 1994-03-15 | 1995-09-22 | Heurtaux Sa | High pressure cleaning system for vehicles |
| JP2002066390A (en) * | 2000-09-04 | 2002-03-05 | Shibuya Machinery Co Ltd | Cleaning nozzle |
| CN201007662Y (en) * | 2007-02-14 | 2008-01-16 | 大连亨利测控仪表工程有限公司 | Wenke conical flowmeter |
| JP2009022841A (en) * | 2007-07-17 | 2009-02-05 | Noritz Corp | Cleaning apparatus |
| CN201787975U (en) * | 2010-01-26 | 2011-04-06 | 浙江大学 | Dual-bluff-body vortex flowmeter with built-in Venturi tube |
| CN202869512U (en) * | 2012-08-20 | 2013-04-10 | 杭州希玛诺光电技术有限公司 | Self-cleaning device for measuring channel of immersed instrument |
-
2012
- 2012-08-20 CN CN201210296712.3A patent/CN103630154A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2717434A1 (en) * | 1994-03-15 | 1995-09-22 | Heurtaux Sa | High pressure cleaning system for vehicles |
| JP2002066390A (en) * | 2000-09-04 | 2002-03-05 | Shibuya Machinery Co Ltd | Cleaning nozzle |
| CN201007662Y (en) * | 2007-02-14 | 2008-01-16 | 大连亨利测控仪表工程有限公司 | Wenke conical flowmeter |
| JP2009022841A (en) * | 2007-07-17 | 2009-02-05 | Noritz Corp | Cleaning apparatus |
| CN201787975U (en) * | 2010-01-26 | 2011-04-06 | 浙江大学 | Dual-bluff-body vortex flowmeter with built-in Venturi tube |
| CN202869512U (en) * | 2012-08-20 | 2013-04-10 | 杭州希玛诺光电技术有限公司 | Self-cleaning device for measuring channel of immersed instrument |
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Application publication date: 20140312 |