CN101762297B - Sensing device for flow meter - Google Patents
Sensing device for flow meter Download PDFInfo
- Publication number
- CN101762297B CN101762297B CN2010101117546A CN201010111754A CN101762297B CN 101762297 B CN101762297 B CN 101762297B CN 2010101117546 A CN2010101117546 A CN 2010101117546A CN 201010111754 A CN201010111754 A CN 201010111754A CN 101762297 B CN101762297 B CN 101762297B
- Authority
- CN
- China
- Prior art keywords
- hole
- strain
- pedestal
- transmission rod
- binding head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims description 26
- 239000011888 foil Substances 0.000 claims description 22
- 239000012530 fluid Substances 0.000 claims description 9
- 239000000565 sealant Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000002955 isolation Methods 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 229920001967 Metal rubber Polymers 0.000 abstract 4
- 229920001971 elastomer Polymers 0.000 abstract 4
- 239000000806 elastomer Substances 0.000 abstract 4
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a sensing device for a flow meter, which comprises a strain body fixedly installed between a pedestal and a dowel steel consisting of a strain elastomer and strain pieces fixedly attached on the strain elastomer, wherein the strain pieces are bridged and then are connected with an external data processing device through a data wire. The sensing device is characterized in that: the strain elastomer comprises a sheeted metal elastomer fixedly connected between a pedestal and a dowel bar; the strain pieces are fixedly attached to the front and rear planes of the sheeted metal elastomer; thin-wall metal elastic corrugated tubes are idly sleeved outside the strain body between the pedestal and the dowel bar; and upper and lower ports of each corrugated tube are fixedly connected with the pedestal and the dowel bar in a sealing way respectively. The strain elastomer is made of sheeted metal elastomer instead of a conventional metal elastic cylinder, and the strain pieces are fixedly attached to the front and rear planes of the sheeted metal elastomer, so the detection sensitivity is improved, the measurement range of the flow meter is expanded, and the metering sensitivity and the shock-resistant overload capacity of the sensing device are improved; and moreover, the thin-wall metal elastic corrugated tubes are utilized to seal the strain body, so complete isolation of the strain pieces of the strain body from a measured medium is guaranteed.
Description
Technical field
The present invention relates to flow detector, specifically is the sensing device that a kind of flowmeter is used, and enlarges the usable range of flowmeter; raising is with the sensitivity of intensity lower sensor; guarantee to detect, measure reliably precisely, protect the safety of flowmeter sensor, prolong the serviceable life of flowmeter.
Background technology
The digital display target type meter is at coaxial placement in measuring tube center and the rigidly connected force-summing element of sensor, and when measured medium during with certain flow rate, media flow produces corresponding momentum, and this momentum directly acts on the force-summing element; Because force-summing element and sensor are rigidly connected, the differential pressure of fluid momentum and fluid motion association alternately influences down, by force-summing element sensor is produced an acting force, acting force converts electric signal to through sensor, after preposition amplification, DA conversion and data processing, can detect corresponding instantaneous delivery and accumulative total total amount, realize the flow measurement purpose.
Existing digital display target type meter, constitute by data processing equipment, sensing device and sampling apparatus substantially, data processing equipment is made up of signal processing circuit and display, sensing device comprises sensor holder and sensor, sampling apparatus comprises target bar and the target sheet that is fixed on the target bar, sensor is made up of metallic elastic cylindrical shell and the foil gauge of being located on the cylinder lateral wall, and the target bar is fixed in outside the cylindrical shell of sensor.The flowmeter of this structure, its principle of work is: the fluid of flow through body or pipeline acts on the target sheet, by the target bar this acting force is put on and to make it to take place deformation on the metal cylinder, foil gauge is converted into electric signal with the mechanical deformation amount, reach data processing equipment, processes and displays goes out corresponding fluid instantaneous delivery and accumulative total total amount as calculated, realizes the flow measurement purpose.But, because the foil gauge of sensor is attached on the sidewall of metallic elastic cylindrical shell, fluid force makes the deformation of metallic elastic cylindrical shell by target sheet, target bar, and metallic elastic cylindrical shell deformation susceptibility is poor, impel the acting force of metallic elastic cylindrical shell generation deformation necessary enough big, the metallic elastic cylindrical shell is low to low discharge fluid susceptibility; So, must occur measuring the starting stage and ending phase is measured coarse technical matters, and can't precisely measure, finally cause flow measurement range narrow the low discharge fluid.In addition, the loaded down with trivial details and poor reliability of its manufacturing process influences the metering precision and the reliability of sensor.
Summary of the invention
The objective of the invention is to overcome the deficiency that existing digital display target type meter is unsuitable for the low discharge metering, a kind of flowmeter sensing device with high deformation susceptibility response body is provided, to enlarge the measurement range of flowmeter, improve to greatest extent under the prerequisite of sensor impact resistance, improve metering susceptibility and measurement range degree.
The technical solution adopted for the present invention to solve the technical problems is: comprise be fixedly mounted between pedestal and the transmission rod response body, this response body is made of strain elastic body and the foil gauge that is sticked on the strain elastic body, and foil gauge connects outside data processing equipment by signal wire behind the group bridge; It is characterized in that: described response body comprises the sheet metal elastic body that is fixedly connected between pedestal and the transmission rod; Described foil gauge fixedly is sticked on the elastomeric side of sheet metal; Response body outside between described pedestal and the transmission rod is set with the metallic elastic corrugated tube of thin-walled, and the upper and lower port of this corrugated tube is sealedly and fixedly connected with pedestal, transmission rod respectively.Response body is sealed in the corrugated tube between pedestal and the transmission rod, guarantees the isolation fully of response body and measured medium.
Further, the elastomeric two ends of described sheet metal correspondence is connected with and the one-body molded columned upper and lower connector of sheet metal elastic body, and the middle part of upper binding head is provided with position limiting convex ring, and the lower end of lower union joint is provided with is with externally threaded undergauge section; Said base offers the axial perforation center mounting hole that can supply lower union joint to pass, and the middle and upper part of center mounting hole is provided with the hole enlargement threaded hole suitable with the position limiting convex ring external diameter, and the bottom surface of this hole enlargement threaded hole is formed at the limited step that position limiting convex ring matches; The elastomeric upper binding head of sheet metal is engaged in the mounting hole of pedestal, is installed with the external thread hold-down ring between the threaded hole on bulge loop top and the upper binding head, and described upper binding head bulge loop presses between external thread hold-down ring and limited step; The end face of above-mentioned transmission rod offers the blind screw hole that matches with lower union joint external thread undergauge section, and above-mentioned lower union joint fixedly revolves in the tapped blind hole that is located at transmission rod by lower union joint.
Center mounting hole edge next week of said base convexes with the external diameter axial pipe connection portion suitable with inside diameter of bel; The upper end external diameter and the inside diameter of bel of above-mentioned transmission rod are suitable; The corresponding socket pedestal tube of above-mentioned corrugated tube upper and lower end joint, transmission rod upper end and welding are fixing.
The end face of above-mentioned upper binding head offers near the cable-through hole the connecting portion that is through to upper binding head and strain elastic body, the corresponding oblique through hole that connects above-mentioned cable-through hole that offers with the junction of upper binding head in described strain elastic body two sides; Described foil gauge is connected foil gauge with signal wire one end between the data processing equipment, and it is overhanging through cable-through hole that the other end passes oblique through hole; Be filled with fluid sealant in cable-through hole, the oblique through hole.
Be provided with O-ring seal between the center mounting hole of said base and the upper binding head.
Intelligent digital type moment formula flowmeter provided by the invention, adopt the sheet metal elastic body to substitute existing metallic elastic cylindrical shell and make the strain elastic body, foil gauge fixedly is sticked on the elastomeric forward and backward plane of sheet metal, improved the detection sensitivity of response body greatly, not only satisfy big flow detection, most importantly be highly suitable for low discharge and detect, enlarge the measurement range of flowmeter; Utilize the metallic elastic sylphon seal response body of thin-walled, make the isolation fully of response body and measured medium, thereby overcome response body that existing metallic elastic cylindrical shell makes is measured the low and measurement range degree deficiency brought thus of susceptibility to low discharge difficult point.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is a structure cut-open view of the present invention.
Fig. 2 is the structural representation of the response body among Fig. 1.
Fig. 3 is the component decomposition map of Fig. 1.
Fig. 4 is a user mode synoptic diagram of the present invention.
Embodiment
With reference to Fig. 1 and Fig. 3.The sensing device that a kind of flowmeter is used mainly comprises pedestal 1, transmission rod 2, response body 3 and stainless steel thin-wall corrugated tube 5.
With reference to Fig. 2 and in conjunction with Fig. 1, Fig. 3.Above-mentioned response body 3 comprises sheet metal elastic body 31 and the foil gauge 4 that is fixedly connected between pedestal 1 and the transmission rod 2, the two ends correspondence of sheet metal elastic body 31 is connected with and sheet metal elastic body 31 integrated cylindric upper and lower connectors 32,33, the middle part of upper binding head 32 is provided with position limiting convex ring 321, and the lower end of lower union joint 33 is provided with is with externally threaded undergauge section.The end face of upper binding head 32 offers near the center cable-through hole 30 the connecting portion that is through to upper binding head and sheet metal elastic body 31, the corresponding oblique through hole 301 that connects cable-through hole 30 that offers with the junction of upper binding head 32 in sheet metal elastic body 31 two sides.Foil gauge 4 fixedly is sticked in the forward and backward in-plane of sheet metal elastic body 31, promptly is sticked on the width side of sheet metal elastic body 31; Foil gauge 4 is connected foil gauge 4 with signal wire 6 one ends between the data processing equipment, the other end passes oblique through hole 301 and stretches out to connect outside data processing equipment through cable-through hole 30, cable-through hole 30, oblique filling with sealant in the through hole 301 prevent to get loose and guarantee that foil gauge 4 residing spaces seal fully with fixed signal line 6.
With reference to Fig. 3.Said base 1 offers the axial perforation center mounting hole 11 that can supply lower union joint 33 to pass, the middle and upper part of center mounting hole 11 is provided with the hole enlargement threaded hole 12 suitable with position limiting convex ring 321 external diameters, and the bottom surface of this hole enlargement threaded hole forms the limited step that matches with position limiting convex ring 321.The center mounting hole edge 11 next weeks of pedestal 1 convexes with the external diameter connector portions 13 suitable with corrugated tube 5 internal diameters.
With reference to Fig. 1 and Fig. 3.The end face of above-mentioned transmission rod 2 offers the blind screw hole 21 that matches with lower union joint 33 external thread undergauge sections, and the external diameter of transmission rod 2 upper ends is suitable with corrugated tube 5 internal diameters.
With reference to Fig. 1 and in conjunction with Fig. 2 and Fig. 3.The upper binding head 32 of sheet metal elastic body 31 is engaged in the center mounting hole 11 of pedestal, installing O-ring seal 7 between the center mounting hole 11 of pedestal and the upper binding head 32, be installed with external thread hold-down ring 8 between the threaded hole 12 of position limiting convex ring 321 tops and the upper binding head 32, upper binding head position limiting convex ring 321 presses between external thread hold-down ring 8 and limited step; Above-mentioned lower union joint 33 fixedly revolves in the tapped blind hole 21 that is located at transmission rod 2 by lower union joint external thread undergauge section.The corresponding socket base joint of the upper and lower port portion 13 of above-mentioned corrugated tube 5, transmission rod 2 upper ends are fixed by welded seal.Foil gauge 4 is sealed in the corrugated tube 5 between pedestal 1 and the transmission rod 2, guarantees the isolation fully of foil gauge 4 and measured medium, the safety of protection foil gauge.Outward winding hold-down ring 8, the elastomeric lower union joint 32 of sheet metal just can take out whole response body 3, be convenient to safeguard, dismounting.
With reference to Fig. 4.During use, pedestal 1 is fixed on the mount pad 92 on the housing 91, transmission rod 2 lower ends installing force-summing element 93, and overhanging signal wire 6 is connected with the data processing equipment 94 that is fixed on mount pad 92 tops.During assembling, should guarantee that the width surface of sheet metal elastic body 31 is arranged towards just meeting flow path direction.
Connected mode between sheet metal elastic body 31, pedestal 1 and the transmission rod 2 is not limited to the above, also can the three in one moulding.
The above only is preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (6)
1. sensing device that flowmeter is used, comprise the response body that is fixedly mounted between pedestal and the transmission rod, this response body is made of strain elastic body and the foil gauge that is sticked on the strain elastic body, and foil gauge connects outside data processing equipment by signal wire behind the group bridge; It is characterized in that: described strain elastic body comprises the sheet metal elastic body that is fixedly connected between pedestal and the transmission rod; Described foil gauge fixedly is sticked on the elastomeric forward and backward plane of sheet metal; Response body outside between described pedestal and the transmission rod is set with the metallic elastic corrugated tube of thin-walled, and the upper and lower port of this corrugated tube is sealedly and fixedly connected with pedestal, transmission rod respectively.
2. sensing device according to claim 1, it is characterized in that: the elastomeric upper and lower end correspondence of described sheet metal is connected with and the one-body molded columned upper and lower connector of sheet metal elastic body, the middle part of upper binding head is provided with position limiting convex ring, and the lower end of lower union joint is provided with is with externally threaded undergauge section; Said base offers the axial perforation center mounting hole that can supply lower union joint to pass, and the middle and upper part of center mounting hole is provided with the hole enlargement threaded hole suitable with the position limiting convex ring external diameter, and the bottom surface of this hole enlargement threaded hole is formed at the limited step that position limiting convex ring matches; The elastomeric upper binding head of sheet metal is engaged in the mounting hole of pedestal, is installed with the external thread hold-down ring between the threaded hole on bulge loop top and the upper binding head, and described upper binding head bulge loop presses between external thread hold-down ring and limited step; The end face of above-mentioned transmission rod offers the blind screw hole that matches with lower union joint external thread undergauge section, and above-mentioned lower union joint fixedly revolves in the tapped blind hole that is located at transmission rod by external thread undergauge section.
3. sensing device according to claim 2 is characterized in that: center mounting hole edge next week of described pedestal convexes with the external diameter axial pipe connection portion suitable with inside diameter of bel; The upper end external diameter and the inside diameter of bel of above-mentioned transmission rod are suitable; The corresponding socket pedestal tube of above-mentioned corrugated tube upper and lower end joint, transmission rod upper end and welding are fixing.
4. according to claim 2 or 3 described sensing devices, it is characterized in that: the end face of described upper binding head offers near the cable-through hole the connecting portion that is through to upper binding head and strain elastic body, the corresponding oblique through hole that connects above-mentioned cable-through hole that offers with the junction of upper binding head in described strain elastic body two sides; Described foil gauge is connected foil gauge with signal wire one end between the data processing equipment, and it is overhanging through cable-through hole that the other end passes oblique through hole; Be filled with fluid sealant in cable-through hole, the oblique through hole.
5. sensing device according to claim 4 is characterized in that: be provided with O-ring seal between the center mounting hole of described pedestal and the upper binding head.
6. according to claim 2 or 3 described sensing devices, it is characterized in that: be provided with O-ring seal between the center mounting hole of described pedestal and the upper binding head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101117546A CN101762297B (en) | 2010-02-22 | 2010-02-22 | Sensing device for flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101117546A CN101762297B (en) | 2010-02-22 | 2010-02-22 | Sensing device for flow meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101762297A CN101762297A (en) | 2010-06-30 |
| CN101762297B true CN101762297B (en) | 2011-12-28 |
Family
ID=42493597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101117546A Expired - Fee Related CN101762297B (en) | 2010-02-22 | 2010-02-22 | Sensing device for flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101762297B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589630B (en) * | 2012-03-07 | 2014-04-09 | 泉州市优诺测控技术有限公司 | Composite strain sensor for flow meter |
| CN104482969B (en) * | 2014-12-22 | 2018-01-30 | 泉州日新流量仪器仪表有限公司 | A kind of high temperature resistant sensor of flowmeter |
| CN107764354A (en) * | 2017-10-26 | 2018-03-06 | 浙江圣地物联科技有限公司 | A kind of water-proof weight sensor |
| CN108168640A (en) * | 2017-12-28 | 2018-06-15 | 重庆联大仪表有限公司 | A kind of high-temperature medium monitors flowmeter on-line |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100228410B1 (en) * | 1997-07-09 | 1999-11-01 | 이상용 | Liquid water level flux measuring system and measuring method use strain gauge type loadcell |
| CN2337530Y (en) * | 1998-04-09 | 1999-09-08 | 上海普联科技有限公司 | Impulse flowmeter |
| CN2404102Y (en) * | 2000-01-06 | 2000-11-01 | 泉州日新流量仪器仪表有限公司 | Internal digital display target type flowmeter |
| CN2859465Y (en) * | 2006-05-26 | 2007-01-17 | 熊焕祈 | Strain target-type flowmeter |
| CN201653457U (en) * | 2010-02-22 | 2010-11-24 | 泉州日新流量仪器仪表有限公司 | Sensor for flow meter |
-
2010
- 2010-02-22 CN CN2010101117546A patent/CN101762297B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101762297A (en) | 2010-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9267833B2 (en) | Fluid measurement sensor attachment structure | |
| CN101762297B (en) | Sensing device for flow meter | |
| CN201653457U (en) | Sensor for flow meter | |
| CN2935096Y (en) | Integrated differential pressure flowmeter | |
| CN2859465Y (en) | Strain target-type flowmeter | |
| CN206531461U (en) | The device of maximum inner diameter difference on electronic type measuring cylinder body section | |
| CN101464198B (en) | Diaphragm type high-temperature pressure sensor | |
| CN209416422U (en) | A kind of water meter or flowmeter structure based on resistance strain type sensor | |
| CN208043318U (en) | A kind of manometer metering device free of demolition | |
| CN110196133A (en) | A kind of industrial vibration-proof pressure gauge | |
| CN201926537U (en) | Pressure meter with calibration interface | |
| CN101988842A (en) | Magnetic coupling float type gas flowrate gauge | |
| CN205027480U (en) | Dual -display vacuum display meter | |
| CN102589630B (en) | Composite strain sensor for flow meter | |
| CN204788564U (en) | Digital level gauge | |
| CN203275009U (en) | Wide-range double-face indication cylinder valve pressure detector | |
| CN207335952U (en) | A kind of precision digital pressure gauge | |
| CN201867278U (en) | Differential pressure diaphragm seal structure of transmitting instrument | |
| CN202511830U (en) | Composite strain type sensor for flow meter | |
| CN109798943A (en) | A kind of water meter or flowmeter structure based on resistance strain type sensor | |
| CN218973708U (en) | Corrosion-resistant digital differential pressure meter | |
| CN102121843A (en) | Top mount type quartz glass tube liquid level meter | |
| CN211013096U (en) | Plug-in vortex street flowmeter | |
| CN216246962U (en) | Detachable corrugated pipe | |
| CN221350182U (en) | Embedded turbine flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 |