CN2072215U - Ceramic electromagnetic flow meter - Google Patents
Ceramic electromagnetic flow meter Download PDFInfo
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- CN2072215U CN2072215U CN 90207310 CN90207310U CN2072215U CN 2072215 U CN2072215 U CN 2072215U CN 90207310 CN90207310 CN 90207310 CN 90207310 U CN90207310 U CN 90207310U CN 2072215 U CN2072215 U CN 2072215U
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Abstract
The utility model relates to a ceramic electromagnetic flow meter which has the ceramic tube composite structure of a sheath and an integrated sintering electrode structure. A ceramic tube is molded conveniently so that production cost is reduced, and the sealing problems of electrodes are ultimately solved. The utility model has strict characteristics of water prevention, dust prevention, gas prevention and explosion prevention. As a result, the utility model is suitable for an extremely execrable environment and can be widely used in volume flow measurement for various kinds of acid, easily abraded medium and easily corrupted medium, wherein, the various kinds of acid comprises hydrochloric acid, sulfuric acid, nitric acid and hydrofluoric acid, etc.; the easily abraded medium and the easily corrupted medium comprise hot alkaline solution, pulp, mud, etc.
Description
The utility model relates to a kind of electromagnetic flowmeter with ceramic lined and sheath composition duplex measurement pipe, is widely used for the volumetric flow rate of measuring various acids such as hydrochloric acid, sulfuric acid, nitric acid, hydrofluorite and filling up easy to wear, perishable media such as aqueous slkali, ore pulp, mud.
Japan's mountain force Newire Inc. was suddenly described the ceramic measuring tube of this flowmeter in 1987 in patent of invention " electromagnetic flowmeter " CN86105077A of China's application: have and insert a ceramic plug and a refractory metal (platinum or platinum alloy) in the ceramic pipe of two ends flange and constitute current-carrying part and (see Fig. 1,1 measuring tube for the band flange, 2 is electrode), the end of the topped contacting with fluid at plug of current-carrying part and on form electrode, the X-1000 type ceramic electromagnetic flowmeter that West Germany KROHNE company produces then is to lose to insert the platinum electrode in the ceramic pipe with two ends flange.More than in two kinds of structures, the equal flange in ceramic pipe two ends of flowmeter, the stress that causes when existing the stupalith high temperature sintering at two ends flange place like this, this stress existence is harmful to, make ceramic fracture easily, adopt the electrode structure of topped refractory metal on platinum electrode or the ceramic plug in addition, except costing an arm and a leg, because the thermal expansivity of metal electrode and ceramic pipe is inequality, when temperature changes, can seriously reduce sealing property, partly be installed surface owing to the ceramic pipe two ends are exposed to outside flange again, direct and external fluid pipeline is rigidly connected and bears mechanical force, because the fragility of stupalith, during user installation, breaking of normal generation ceramic pipe, whole electromagnetic flowmeter can not be used, and this turnup structure sinter molding difficulty, thereby also be not suitable for making bigbore electromagnetic flowmeter.
The utility model purpose can overcome shortcoming and uneasy sealing of electrode structure and the expensive shortcoming that prior art stupalith fragility is broken ceramic pipe, and a kind of have the ceramic pipe composite structure of sheath and the ceramic electromagnetic flowmeter of integral sintering electrode structure are provided.
For above-mentioned purpose, technical solutions of the utility model are that ceramic measuring tube is made the straight-through pipe of the pottery that does not have flange in two ends, the outside of measuring tube comprises that two annulus end faces are cast with the fiberglass sheath, and yoke and field coil are encapsulated within the sheath, 4 electrode sintering promptly are to substitute electrode and measuring tube separate type in the prior art with the electrode structure of ceramic pipe one sintering on ceramic vessel wall.
The utility model embodiment is illustrated in conjunction with the accompanying drawings.
Fig. 1 is the electromagnetic flowmeter structural representation with two ends flange;
Fig. 2 is the utility model structural representation;
Fig. 3 is the arrangement of electrodes synoptic diagram.
By shown in Figure 2, ceramic measuring tube 4 is the straight-through pipe that two ends do not have flange, the outside of measuring tube 4 comprises that the annulus end face at two ends is cast with fiberglass sheath 3, ceramic measuring tube 4 is than 4～14 millimeters of sheath 3 weak points, make measuring tube 4 be in the middle part of sheath 3 symmetrically, can reduce the ceramic pipe wall thickness like this, save cost, the ceramic pipe wall thickness is 3～6 millimeters, make ceramic measuring tube not be exposed to the outside like this, directly and the fluid line mechanical force that is caused that is rigidly connected bear by the both ends of the surface of sheath 3, the fault of breaking of so just having avoided electromagnetic flowmeter to take place when mounted, yoke 5 and field coil 6 are encapsulated within the sheath 3, make all constituents of electromagnetic flowmeter all be packaged into an entity securely, has tight waterproof, dustproof, the characteristic of gas-tight, and has an explosion-resistance characteristic, be more suitable for not changing its operating characteristic in the medium-term and long-term use of the environmental baseline of very severe, in addition, (see Fig. 2 with the magnetic line of force that produces by yoke 5 and field coil 6, be represented by dotted lines the magnetic line of force) 2 signal electrodes 7 are housed on the vertical measurement tube wall, parallel with the magnetic line of force and be symmetrical in signal electrode 7 and 2 ground-electrodes 8 be housed near on the tube walls at measuring tube two ends.The current-carrying part of electrode is to implement like this, be milled into pulverulence with corrosion resistant conductive material, before sintering, with its infiltration 7,8 positions as shown in Figure 3, conductive powder and ceramic particle mix equably, then whole ceramic pipe is put into and carried out sintering in the high temperature furnace, just form current-carrying part after the sinter molding, also promptly formed electrode, electrode and becoming one of ceramic measuring tube structure like this, fundamentally solved the leakage problem at electrode place, the current-carrying part diameter is 6～18 millimeters, increases and correspondingly increases with the electromagnetic flowmeter diameter.
This duplex measurement pipe that constitutes by ceramic lined and sheath and the ceramic electromagnetic flowmeter of integral sintering electrode structure, has corrosion-resistant and wear-resisting premium properties, and the ceramic pipe moulding process is simple, production cost is low, fundamentally solved the electrode sealing problem, can be widely used in perishablely, the rate-of flow of electrode easy to wear is measured.
Claims (1)
1, the ceramic electromagnetic flowmeter of a kind of electromagnetic yoke, field coil, measuring tube, electrode composition, it is characterized in that: the measuring tube 4 of electromagnetic flowmeter is for a kind of two ends do not have the straight-through pipe of pottery of flange, the outside of measuring tube 4 comprises that two annulus end faces are cast with fiberglass sheath 3, yoke 5 and field coil 6 are encapsulated within the sheath 3, on the measurement tube wall vertical 2 signal electrodes 7 are housed, parallel with the magnetic line of force and be symmetrical in signal electrode and two ground-electrodes 8 be housed near on the tube wall at measuring tube two ends with the magnetic line of force that produces by yoke 5 and field coil 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90207310 CN2072215U (en) | 1990-06-06 | 1990-06-06 | Ceramic electromagnetic flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90207310 CN2072215U (en) | 1990-06-06 | 1990-06-06 | Ceramic electromagnetic flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2072215U true CN2072215U (en) | 1991-02-27 |
Family
ID=4887753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90207310 Withdrawn CN2072215U (en) | 1990-06-06 | 1990-06-06 | Ceramic electromagnetic flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2072215U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365393C (en) * | 2003-04-14 | 2008-01-30 | 森泰克有限公司 | Magnetic flow transducer and flow meter incorporating the same |
| CN102095456A (en) * | 2010-12-13 | 2011-06-15 | 昆山市鑫源计测科技有限公司 | Submersible electromagnetic flow sensor |
| CN102661764A (en) * | 2012-05-25 | 2012-09-12 | 山东泽谊自控技术有限公司 | Quartz tube electromagnetic flow sensor |
-
1990
- 1990-06-06 CN CN 90207310 patent/CN2072215U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365393C (en) * | 2003-04-14 | 2008-01-30 | 森泰克有限公司 | Magnetic flow transducer and flow meter incorporating the same |
| CN102095456A (en) * | 2010-12-13 | 2011-06-15 | 昆山市鑫源计测科技有限公司 | Submersible electromagnetic flow sensor |
| CN102661764A (en) * | 2012-05-25 | 2012-09-12 | 山东泽谊自控技术有限公司 | Quartz tube electromagnetic flow sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |