CN2558965Y

CN2558965Y - Dismountable scraper type intelligent electromagnetic flowmeter

Info

Publication number: CN2558965Y
Application number: CN 02243352
Authority: CN
Inventors: 陈宝荣; 苏林波; 鲁金祥
Original assignee: 陈宝荣
Priority date: 2002-07-24
Filing date: 2002-07-24
Publication date: 2003-07-02
Anticipated expiration: 2012-07-24

Abstract

The utility model relates to a demountable intelligent electromagnetic flow meter of scraper type, comprising a display instrument, a shell body, an upper loop, a lower loop and an electrode element, etc., wherein, the electrode element is a demountable electrode structure of scraper type. The structure is to sleeve the signal electrode on a scraper bar with a scraper and fix the signal electrode and the scraper bar in an electrode cup by a gland nut. The electrode cup is firmly welded on the inner shell. The signal electrode is separated from the inner shell, the electrode cup and the gland nut by insulating materials. When the signal electrode needs maintenance, what is needed to do is to open a closed over, drive the scraper bar to rotate by turning a handle with hands so as to enable the scraper close to the signal electrode to scraped away the dirt on the surface of the signal electrode. Once the electrode is destroyed, the flow meter does not need to be detached from the pipes in that the signal electrode and the scraper bar can be taken out and changed after rotating the gland nut. The utility model has extremely convenient use and conquers imperfections of the prior art.

Description

Detachable blade formula intelligent electromagnetic flowmeter

One. technical field:

This is novel to relate to a kind of electromagnetic flowmeter.Be particularly related to the electrode assemblie that uses on a kind of electromagnetic flowmeter,

Two. background technology:

The intelligent electric magnetic flowmeter is a kind of Ferraris instrument of measuring the conducting medium volumetric flow rate, because of the sensing measurement pipe is a straight pipe, its sound construction is reliable, no movable member, do not hinder the throttling element that fluid flows yet, can not stop up, do not have the additonal pressure loss, and instrument coefficient is not subjected to the influence of fluid components and physical parameter (density, viscosity), duty (pressure, temperature) and conductivity variations etc., and the flow measurement weight range is big., the measuring accuracy height as requested can the different anti-corrosion material of liner, and is widely used in every field.

The electrode structure of the electromagnetic flowmeter of producing is greatly to being divided into three types at present: a kind of electrode structure form that is custom with electromagnetic flowmeter, the soldered housing of its electrode assemblie wraps in the inside, when flowmeter because of reasons such as medium operating modes, cause medium to adhere to and incrustation, make the electrode tip surface be damaged and when having influence on flowmeter and normally measuring, user and maintenance personal can easily not take out electrode maintenance and safeguard from housing.Another kind is: the electrode structure form of detachable intelligent electromagnetic flowmeter, though electrode is split out very easily, but still the medium that will cut off in the pipeline just can carry out care and maintenance to electrode, every care and maintenance once all must cut off pipeline medium once, comparatively frequent and disapprove the user who cuts off pipeline medium to care and maintenance, still can not meet the demands.Another is: the electrode structure form of scraper type intelligent electromagnetic flowmeter, though improved the shortcoming of above-mentioned two kinds of structures, can be under the situation of not cutting off pipeline medium, by scraper clearing electrode surface contaminants and incrustation, but when electrode damage is serious, can not very easily electrode be split out, can only be the medium that cuts off pipeline, unload flowmeter after, electrode could be split out, so, though when electrodes maintenance and maintenance, bring convenience, in case using, damages long afterwards when changing the electrode time, this moment must be with flowmeter after pipeline be unloaded down, could change electrode, make troubles for the replacing electrode.

Three. summary of the invention:

This novel purpose is: design a kind of detachable blade formula intelligent electromagnetic flowmeter, so that make things convenient for the user under the situation that needn't cut off pipeline medium, carry out the care and maintenance of electrode; In case and will not pull down from pipeline by flowmeter when badly damaged appear in electrode, also can easily change electrode.

It specifically is a kind of detachable blade formula intelligent electromagnetic flowmeter of design, mainly be that electrode assemblie is made detachable blade formula electrode structure, the kind electrode assembly is by signal electrode, be with the knife bar of scraping of scraper, insulating material, gland nut, setscrew nut, stop nut, handle, capping, spring, lug plate, electrode visual tube, compositions such as pole cup, wherein: signal electrode is set on scraping on the knife bar of band scraper, be fixed in the pole cup by gland nut, pole cup is weldingly fixed on the internal surface body, the signal electrode upper end is provided with screw thread, and by this screw thread stationary positioned nut, be fixed with lug plate between two setscrew nuts, can connect lead on the lug plate, the wiring hole that passes for lead is arranged on the pole cup, insulation sleeve is housed on the wiring hole, scrape and also be fixed with stop nut on the knife bar, spring is set on to be scraped on the knife bar, and between signal electrode and stop nut, there is handle the upper end of scraping knife bar, one end of electrode visual tube is fixed on the pole cup, the other end is fixed on the housing, capping places on the electrode visual tube, signal electrode and inner housing, pole cup, insulating material is housed between gland nut; The length of scraper should be less than the external diameter of the signal electrode internal diameter greater than signal electrode.

Four. description of drawings:

Fig. 1 is this novel detachable blade formula electromagnetic flowmeter structural drawing

Fig. 2 is the right view of Fig. 1

Fig. 3 cuts open for Local C-C of Fig. 1

Fig. 4 is for scraping the knife bar structural drawing

Fig. 5 is the right view of Fig. 4

Five. embodiment:

Fig. 1 is installed in working state figure in the flowtube 5 for this new structure, detachable blade formula electromagnetic flowmeter is by video-stream processor 1, last coil 2, lower coil 4, electrode assemblie 3 compositions such as grade, wherein electrode assemblie 3 sees Fig. 3 for details, be detachable blade formula electrode assemblie 3, concrete structure is: pole cup 69 1 ends are welded on the internal surface body 13, signal electrode 50 is set in to be scraped on the knife bar 51, by gland nut 54 with signal electrode 50 with scrape knife bar 51 and be fixed on the pole cup 69, make insulation between gland nut 54 and the signal electrode 50 with insulating mat 53 and insulation sleeve 55, be provided with screw thread at signal electrode 50 upper end outside surfaces, and by the setscrew nut 67 that is threaded, be fixed with lug plate 58 between two setscrew nuts 67, between setscrew nut 67 and insulation sleeve 55, be provided with pad 68, electrode cable 57 1 ends are fixed on the lug plate 58 by screw 59, the other end is drawn from the wiring hole 46 on the pole cup 69, in order to prevent to be scratched by the wiring hole on the pole cup 69 46, on the wiring hole 46 of pole cup 69, place insulation sleeve 56, spring 66 is set on to be scraped on the knife bar 51, spring 66 is positioned between signal electrode 50 and the stop nut 60, stop nut 60 is fixed on and scrapes on the knife bar 51 by scraping screw thread 49 on the knife bar 51, spring 66 is a stage clip, its effect is: by restoring force the end face of scraper 47 with signal electrode 50 is adjacent to, handle 61 also is housed scraping on the knife bar 51, handle 61 is fixed on by holding screw 62 and scrapes on the knife bar 51, electrode visual tube 65 1 ends are by being threaded on the pole cup 69, the other end of electrode visual tube 65 is welded on the housing 6, capping 63 is installed then, and capping 63 places on the electrode visual tube 65.The length L of scraper 47 should be less than the outer diameter D of signal electrode 50 inner diameter d greater than signal electrode 50.Scrape knife bar 51 and be provided with seal groove 46, and on the seal groove 46 of scraping knife bar 51, O-ring seal 52 is housed, by line with rubber 12 insulation, on electrode visual tube 65, also be provided with O-ring seal 64 between pole cup 69 and the signal electrode.

When signal electrode 50 needs care and maintenance, only need open capping 63, with hand turning handle 61, knife bar 51 rotations are scraped in drive, make the scraper 47 of being close to signal electrode 50 scrape off signal electrode 50 lip-deep dirts, when in case electrode is damaged, after cutting off pipeline medium, flowmeter needn't be pulled down from pipeline, unclamp the screw 59 on the lug plate 58, the connection of throwing off lead 57, screw out gland nut 54 then, both can take out signal electrode 50, scrape knife bar 51, O-ring seal 52, insulating mat 53, insulation sleeve 55, lug plate 58, stop nut 60, handle 61, screw 62, spring 66, setscrew nut 67 parts such as grade, as long as pull down handle 61 again, stop nut 60, spring 66, setscrew nut 67, lug plate 58 parts such as grade just can and be scraped knife bar 51 with signal electrode 50 and separate, then very easily with regard to replaceable impaired electrode 50 or scrape knife bar 51.

Claims

1. detachable blade formula intelligent electromagnetic flowmeter, be by Displaying Meter, housing, last coil, lower coil, compositions such as electrode assemblie, it is characterized in that: electrode assemblie is a detachable blade formula electrode structure, the kind electrode assembly is by signal electrode, be with the knife bar of scraping of scraper, insulating material, gland nut, setscrew nut, stop nut, handle, capping, spring, lug plate, electrode visual tube, compositions such as pole cup, wherein: signal electrode is set on scraping on the knife bar of band scraper, be fixed in the pole cup by gland nut, pole cup is weldingly fixed on the internal surface body, be provided with screw thread in the signal electrode upper end, and by this screw thread stationary positioned nut, be fixed with lug plate between two setscrew nuts, can connect lead on the lug plate, the wiring hole that passes for lead is arranged on the pole cup, insulation sleeve is housed on the wiring hole, scrape and also be fixed with stop nut on the knife bar, spring is set on to be scraped on the knife bar, and between signal electrode and stop nut, the upper end of scraping knife bar is provided with handle, one end of electrode visual tube is fixed on the pole cup, the other end is fixed on the housing, capping places on the electrode visual tube, signal electrode and internal surface body, pole cup, separate by insulating material between gland nut.

2. a kind of detachable blade formula intelligent electromagnetic flowmeter according to claim 1 is characterized in that: the length L of scraper should be less than the outer diameter D of the signal electrode inner diameter d greater than signal electrode.

3. a kind of detachable blade formula intelligent electromagnetic flowmeter according to claim 1 is characterized in that: scrape on the seal groove of knife bar O-ring seal is housed.