CN202501877U - Inner diameter reduction single electrode insertion type electromagnetic flowmeter - Google Patents
Inner diameter reduction single electrode insertion type electromagnetic flowmeter Download PDFInfo
- Publication number
- CN202501877U CN202501877U CN2012200359699U CN201220035969U CN202501877U CN 202501877 U CN202501877 U CN 202501877U CN 2012200359699 U CN2012200359699 U CN 2012200359699U CN 201220035969 U CN201220035969 U CN 201220035969U CN 202501877 U CN202501877 U CN 202501877U
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- electrode
- iron core
- measuring tube
- measuring
- inner chamber
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Abstract
The utility model discloses an inner diameter reduction single electrode insertion type electromagnetic flowmeter. A measuring probe is inserted into the measuring tube of a flow sensor. The measuring probe comprises a metal protection tube, an insulator, a U-shaped iron core and an electrode. The U-shaped iron core is arranged in the metal protection tube. The electrode is arranged at the central of the U-shaped iron core. The U-shaped iron core and the electrode are fixed at the front end of the metal protection tube with the insulator. The electrode emerges from the center of a recess at the front end of the insulator. An induction coil of the U-shaped iron core, the electrode and a ground wire contact which is fixed at the rear end of the metal protection tube are led out from the rear end of the measuring probe by a lead, and are connected with a converter respectively. The measuring tube is a short cylindrical tube body of a diameter reduction inner cavity. The cross section of the inner cavity of the measuring tube is of a semicircular shape or of a flat square shape. The diameter reduction ratio of the cross section of the inner cavity is 5 to 4. The measuring tube provided by the utility model is connected with a water supply line, and the measuring probe is inserted into the measuring tube. According to the utility model, the insertion type single electrode is used, thus the manufacturing cost is reduced, and the flow measuring range and sensitivity are improved.
Description
Technical field
The utility model relates to the liquid flow measurement instrument, particularly relates to the electromagnetic flowmeter of single electrode inserted mode.
Background technology
At present the flowmeter that uses of water supply industry adopts mechanical rotor water gauge, drives the rotation of counter gear through the wing wheel that in current, rotates, and record also shows the flow of water.Because mechanical part rotates and to produce friction, and makes the continuous loss of mechanical part, therefore, rotor water gauge exists that parts are fragile, the water leak rate big and keep in repair frequent problem.Simultaneously, also there is the problem that the minimum velocity flow can not accurately be measured in mechanical rotor water gauge.
In oil, chemical industry, iron and steel, generating and industries such as light textile, printing and dyeing, generally adopt electromagnetic flowmeter, through detect the electric signal that the conductive fluid medium flows and produces in magnetic field, measure the flow that fluid media (medium) passes through.Electromagnetic flowmeter comprises flow sensor and converter, and flow sensor is the inner cylindric measuring tube that inductive coil and inwall mosaic electrode are housed, and inductive coil is connected converter respectively with electrode.In the measuring tube water body flow cutting inductive coil magnetic field the magnetic line of force and produce induced voltage signal, the voltage signal that the electrode measurement that the measuring tube inwall inlays is relevant with water volume flow rate, and then obtain water flow, and by the digital demonstration of the display that is connected with converter.
The measuring tube of existing electromagnetic flowmeter adopts the stainless steel body of tetrafluoro lining, so that on measuring tube insulation inwall, inlay potential electrode.Yet the cost of tetrafluoro lining stainless steel measuring tube is high, influence being widely used and popularizing in water supply industry.In addition, the water meter of existing electromagnetic flowmeter also exists the minimum velocity flow can not accurately measure the problem high with the water leak rate, influences the economic benefit of water undertaking.
Summary of the invention
Promote the use of existing problem to existing machinery rotor water gauge and electromagnetic flowmeter at water supply industry; The utility model is released the interior undergauge single electrode inserted electromagnet flow meter of new structure; The flow sensor that is adopted constitutes by placing electrode in the inductive coil magnetic field to insert in the undergauge measuring tube; Both avoid the use of expensive tetrafluoro lining stainless steel measuring tube, improved flow measurement range and sensitivity through the undergauge measuring tube again, reduced the water leak rate.
The interior undergauge single electrode inserted electromagnet flow meter that the utility model is related comprises flow sensor and converter.Flow sensor is made up of measuring tube and measuring sonde, and measuring tube is the short cylindrical body of undergauge inner chamber body, and measuring sonde inserts in the measuring tube.
Measuring sonde comprises protection metal pipe, insulator, U-iron core and electrode; Protection tube is fixed on the short cylindrical base; The U-iron core places in the protection metal pipe; Be wound with inductive coil on the U-iron core, electrode is arranged on the central authorities of U-iron core, and U-iron core, electrode are fixed on the front end of protection metal pipe by insulator.The front end of U-iron core is encapsulated in the insulator, and the insulator front end is spill, and electrode exposes from the central authorities of insulator front end spill mouth.The inductive coil of U-iron core, electrode and the ground wire contact that is fixed on the protection metal pipe rear end are drawn from the measuring sonde rear end by lead, and are connected with converter respectively.
Measuring tube is the short cylindrical body of undergauge inner chamber body, and the measuring tube tube wall has the inner chamber body convex surface, and the inner chamber body xsect is deltiod or semicircle, and the undergauge of inner chamber body xsect is than being 5:4.The undergauge of inner chamber body xsect is than the ratio for the area of inner chamber body xsect before and after the undergauge.
The measuring tube of the utility model is connected on the water supply line, and measuring sonde inserts in the measuring tube.Current pass through from measuring sonde insulator front end spill mouth; Water body flow cutting inductive coil magnetic field the magnetic line of force and produce induced voltage signal; The induced voltage signal relevant with water volume flow rate measured by electrode and ground wire contact; And then the acquisition water flow, and by the display numeral demonstration that is connected with converter.
The interior undergauge single electrode inserted electromagnet flow meter that the utility model relates to adopts the plug-in type single electrode, rather than the mosaic electrode, does not need the stainless steel measuring tube of tetrafluoro lining, has reduced manufacturing cost.And the undergauge measuring tube improves flow measurement range and sensitivity, has reduced the water leak rate.
Description of drawings
Fig. 1 is the inner structure synoptic diagram of interior undergauge single electrode inserted electromagnet flow meter list convex surface inner chamber body measuring tube.
Fig. 2 is the inner structure synoptic diagram of interior undergauge single electrode inserted electromagnet flow meter biconvex inner chamber body measuring tube.
Fig. 3 is the measuring sonde structural representation among Fig. 1 and Fig. 2.
Description of symbols among the figure:
Embodiment
Combine accompanying drawing that the technical scheme of the utility model is described further at present.Fig. 1 and Fig. 2 have shown the inner structure of interior undergauge single electrode inserted electromagnet flow meter measuring tube, and Fig. 3 has shown the basic structure of interior undergauge single electrode inserted electromagnet flow meter measuring sonde.
As shown in the figure, the related interior undergauge single electrode inserted electromagnet flow meter of the utility model comprises flow sensor and converter.Flow sensor is made up of measuring tube 1 and measuring sonde 3, and measuring tube 1 is the short cylindrical body of undergauge inner chamber body, and measuring sonde 3 inserts in the measuring tube 1.
Measuring sonde 3 comprises protection metal pipe 5, insulator 4, U-iron core 6 and electrode 8; U-iron core 6 places in the protection metal pipe 5; Be wound with inductive coil 7 on the U-iron core 6, electrode 8 is arranged on the central authorities of U-iron core 6, and U-iron core 6, electrode 8 are fixed on the front end of protection metal pipe 5 by insulator 4.The front end of U-iron core 6 is encapsulated in the insulator 4, and insulator 4 front ends are spill, and electrode 8 exposes from the central authorities of insulator 4 front end spill mouths.The inductive coil 7 of U-iron core 6, electrode 8 and the ground wire contact 9 that is fixed on the protection metal pipe rear end are drawn from the rear end of measuring sonde 3 by lead, and are connected with converter respectively.
The tube wall of measuring tube 1 has inner chamber body convex surface 2, and the undergauge of inner chamber body xsect is than being 5:4.Inner chamber body convex surface 2 is single convex surface or biconvex, and the inner chamber body xsect with measuring tube 1 of single convex surface is semicircle, and the inner chamber body xsect with convexo-convex measuring tube 1 is a deltiod.
Claims (3)
1. undergauge single electrode inserted electromagnet flow meter in a kind; Comprise flow sensor and converter; It is characterized in that: said flow sensor is made up of measuring tube and measuring sonde, and measuring tube is the short cylindrical body of undergauge inner chamber body, and measuring sonde inserts in the measuring tube; Measuring sonde comprises protection metal pipe, insulator, U-iron core and electrode; Protection tube is fixed on the short cylindrical base; The U-iron core places in the protection metal pipe; Be wound with inductive coil on the U-iron core, electrode is arranged on the central authorities of U-iron core, and U-iron core, electrode are fixed on the front end of protection metal pipe by insulator; The front end of U-iron core is encapsulated in the insulator, and the insulator front end is spill, and electrode exposes from the central authorities of insulator front end spill mouth; The inductive coil of U-iron core, electrode and the ground wire contact that is fixed on the protection metal pipe rear end are drawn from the measuring sonde rear end by lead, and are connected with converter respectively.
2. undergauge single electrode inserted electromagnet flow meter in according to claim 1; It is characterized in that; Described measuring tube is the short cylindrical body of undergauge inner chamber body; The inner chamber body convex surface of measuring tube is single convex surface, and measuring tube inner chamber body xsect is semicircle, and the undergauge ratio of inner chamber body xsect is 5: 4.
3. undergauge single electrode inserted electromagnet flow meter in according to claim 1; It is characterized in that; Described measuring tube is the short cylindrical body of undergauge inner chamber body; The inner chamber body convex surface of measuring tube is a biconvex, and measuring tube inner chamber body xsect is a deltiod, and the undergauge ratio of inner chamber body xsect is 5: 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200359699U CN202501877U (en) | 2012-02-03 | 2012-02-03 | Inner diameter reduction single electrode insertion type electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200359699U CN202501877U (en) | 2012-02-03 | 2012-02-03 | Inner diameter reduction single electrode insertion type electromagnetic flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202501877U true CN202501877U (en) | 2012-10-24 |
Family
ID=47038490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200359699U Expired - Fee Related CN202501877U (en) | 2012-02-03 | 2012-02-03 | Inner diameter reduction single electrode insertion type electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202501877U (en) |
-
2012
- 2012-02-03 CN CN2012200359699U patent/CN202501877U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121024 Termination date: 20150203 |
|
| EXPY | Termination of patent right or utility model |