CN201653457U - Sensor for flow meter - Google Patents

Sensor for flow meter Download PDF

Info

Publication number
CN201653457U
CN201653457U CN2010201162227U CN201020116222U CN201653457U CN 201653457 U CN201653457 U CN 201653457U CN 2010201162227 U CN2010201162227 U CN 2010201162227U CN 201020116222 U CN201020116222 U CN 201020116222U CN 201653457 U CN201653457 U CN 201653457U
Authority
CN
China
Prior art keywords
hole
transmission rod
pedestal
elastic
stress
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 - Lifetime
Application number
CN2010201162227U
Other languages
Chinese (zh)
Inventor
梁鲁林
潘荣辉
杨志宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QUANZHOU FLOW OF NEW INSTRUMENTS AND METERS CO Ltd
Original Assignee
QUANZHOU FLOW OF NEW INSTRUMENTS AND METERS CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by QUANZHOU FLOW OF NEW INSTRUMENTS AND METERS CO Ltd filed Critical QUANZHOU FLOW OF NEW INSTRUMENTS AND METERS CO Ltd
Priority to CN2010201162227U priority Critical patent/CN201653457U/en
Application granted granted Critical
Publication of CN201653457U publication Critical patent/CN201653457U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

The utility model relates to a sensor for a flow meter, which comprises a stress body consisting of a stress elastic body and stress sheets, wherein the stress sheets are connected with an external data processing device through a signal wire through a group bridge. The utility model is characterized in that the stress elastic body comprises a flaky metal elastic body fixedly connected between the base and the force transmission rod, the stress sheets are fixedly pasted and arranged on the front plane and the back plane of the flaky metal elastic body, a thin-wall metal elastic corrugated pipe is hollowly sheathed outside the stress body between the base and the force transmission rod, the upper port and the lower port of the corrugated pipe are respectively and fixedly connected with the base and the force transmission rod in a sealed way. The flaky metal elastic body is used for replacing the existing stress elastic body made of a metal elastic tube body, the stress sheets are fixedly pasted and arranged on the front plane and the back plane of the flaky metal elastic body, the detection sensitivity is improved, the measurement range degree of the flow meter can be enlarged, the metering sensitivity and the anti-impact overloading capability of the sensor can be improved, the metering sensitivity and the anti-impact overloading capability can be improved, and the thin-wall metal elastic corrugated pipe is used for sealing the stress body for ensuring the completely isolation of the stress body sheets and measured media.

Description

The sensing device that a kind of flowmeter is used
Technical field
The utility model 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 purpose of this utility model 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 scheme that its technical matters that solves the utility model adopts is: comprise being fixedly mounted on the response body between pedestal and the transmission rod and the foil gauge assembly on response body of being sticked, 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.
The intelligent digital type moment formula flowmeter that the utility model provides, 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 utility model is described in further detail.
Fig. 1 is a structure cut-open view of the present utility model.
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 utility model.
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, it only is preferred embodiment of the present utility model, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims (6)

1. the sensing device that flowmeter is used comprises the strain elastic body that is fixedly mounted between pedestal and the transmission rod and the response body of the foil gauge formation on the strain elastic body that is sticked, 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.
CN2010201162227U 2010-02-22 2010-02-22 Sensor for flow meter Expired - Lifetime CN201653457U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201162227U CN201653457U (en) 2010-02-22 2010-02-22 Sensor for flow meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201162227U CN201653457U (en) 2010-02-22 2010-02-22 Sensor for flow meter

Publications (1)

Publication Number Publication Date
CN201653457U true CN201653457U (en) 2010-11-24

Family

ID=43118699

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201162227U Expired - Lifetime CN201653457U (en) 2010-02-22 2010-02-22 Sensor for flow meter

Country Status (1)

Country Link
CN (1) CN201653457U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101762297A (en) * 2010-02-22 2010-06-30 泉州日新流量仪器仪表有限公司 Sensing device for flow meter
CN104482969A (en) * 2014-12-22 2015-04-01 泉州日新流量仪器仪表有限公司 High temperature resistant sensor for flowmeter
CN111076685A (en) * 2019-12-26 2020-04-28 南京南瑞水利水电科技有限公司 Vibrating wire type flexible displacement measuring device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101762297A (en) * 2010-02-22 2010-06-30 泉州日新流量仪器仪表有限公司 Sensing device for flow meter
CN104482969A (en) * 2014-12-22 2015-04-01 泉州日新流量仪器仪表有限公司 High temperature resistant sensor for flowmeter
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
CN111076685A (en) * 2019-12-26 2020-04-28 南京南瑞水利水电科技有限公司 Vibrating wire type flexible displacement measuring device

Similar Documents

Publication Publication Date Title
CN201653457U (en) Sensor for flow meter
CN203132614U (en) Integrated plug-in battery powered electromagnetic flowmeter
CN101762297B (en) Sensing device for flow meter
CN202141557U (en) Absolute pressure gauge
CN203594590U (en) Detection device of oil pump
CN102937469B (en) Lining type device with ultrasonic flowmeter or ultrasonic thermal energy meter
CN110196133A (en) A kind of industrial vibration-proof pressure gauge
CN208043318U (en) A kind of manometer metering device free of demolition
CN206531461U (en) The device of maximum inner diameter difference on electronic type measuring cylinder body section
CN101988842B (en) Magnetic coupling float type gas flowrate gauge
CN101464198A (en) Diaphragm type high-temperature pressure sensor
CN204788564U (en) Digital level gauge
CN209416422U (en) A kind of water meter or flowmeter structure based on resistance strain type sensor
CN203275009U (en) Wide-range double-face indication cylinder valve pressure detector
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
CN104215294A (en) Integrated type liquid-level transmitter
CN102589630B (en) Composite strain sensor for flow meter
CN211013096U (en) Plug-in vortex street flowmeter
CN202081886U (en) Pressure measuring device for wireless MWD (measurement while drilling) device
CN202126280U (en) Vortex flow meter capable of being mounted and dismounted on-line
CN201673004U (en) Linear methane pressure gauge
RU120221U1 (en) MEMBRANE PRESSURE SENSOR - DDM
CN211121400U (en) Cutting ferrule type ultrasonic flowmeter
CN216559426U (en) Indirect temperature measuring device

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20101124

Effective date of abandoning: 20111228