CN202511830U - Composite strain type sensor for flow meter - Google Patents
Composite strain type sensor for flow meter Download PDFInfo
- Publication number
- CN202511830U CN202511830U CN2012200823378U CN201220082337U CN202511830U CN 202511830 U CN202511830 U CN 202511830U CN 2012200823378 U CN2012200823378 U CN 2012200823378U CN 201220082337 U CN201220082337 U CN 201220082337U CN 202511830 U CN202511830 U CN 202511830U
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- China
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- deformable body
- form variant
- formula sensor
- pedestal
- composite strain
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- Withdrawn - After Issue
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Abstract
A composite strain type sensor for a flow meter comprises a base with a center hole, an external form variant, an internal form variant and a strain element. The external form variant is connected between the base and a dowel rod, the internal form variant is embedded into the external form variant and can produce corresponding deformation responding to deformation of the external form variant, and the strain element attaches to the outer surface of the internal forma variant and can be connected with the an external data processing device. An accommodating hole matching with the internal form variant is formed in the external form variant, and the internal form variant is embedded into the accommodating hole. The external form variant transmits the deformation amount to the internal form variant accurately to achieve the accurate measurement of the sensor. The external form variant can play a role in isolating and protecting the internal form variant and the strain element, and preventing the internal form variant and the strain element from contacting with liquid to cause damage, further, the strength of the external form variant is large, and acting forces produced by large flow amount or instantaneous pressure difference can be born.
Description
Technical field
The utility model relates to the composite strain formula sensor that a kind of flowmeter is used.
Background technology
Target type meter generally comprises measuring tube, be arranged at force-summing element in the measuring tube, be fixedly set in sensor on the measuring tube, be connected transmission rod between sensor and the force-summing element and the data processing equipment that is connected with sensor; Its principle of work is: fluid moves in measuring tube and produces momentum and meeting the stream side and carrying on the back stream side generation pressure differential at force-summing element; Fluid momentum and pressure differential produce corresponding acting force to force-summing element; Acting force passes to sensor through transmission rod, and sensor converts acting force corresponding electric signal into and passes to data processing equipment, calculates corresponding flow value by data processing equipment; Traditional sensor is generally strain gauge transducer; By pedestal, be connected the strain cylindrical shell between pedestal and the transmission rod and be sticked and form at the foil gauge of strain cylinder inboard wall, be 00201624.9 built-in digital display target type meter like the patent No., being sticked in the strain barrel, the technology of foil gauge is comparatively complicated, cost is high and measuring accuracy is low; To the problems referred to above; The existing patent No. is the sensing device that a kind of flowmeter of 20101011754.6 is used on the market, and it discloses between pedestal and transmission rod and has been connected response body, and between pedestal and transmission rod sheathed thin-wall metal elastic bellows; Its response body is made up of strain elastic body and foil gauge; The strain outer elastomeric surface is formed with the plane of adhering to foil gauge, so the attach process of foil gauge is simple, cost is low, and corrugated tube is a thin walled tube; Play the effect of deformable body in the isolating and protecting under can the prerequisite of the normal deformation of deformable body in as far as possible not influencing; Prevent that foil gauge from contacting, causing damage with liquid, but at fluid flow under the bigger situation of big or moment pressure reduction thin-wall corrugated tube excessive and damaged because of deformation easily, if adopt corrugated tube then the precision that can the considerable influence sensor of heavy wall.
The utility model content
The purpose of the utility model is the deficiency to prior art, and a kind of simple in structure, measuring accuracy is high, the flowmeter of high reliability is used composite strain formula sensor is provided.
The purpose of the utility model realizes through following technical scheme:
The composite strain formula sensor that a kind of flowmeter is used; Comprise the pedestal that is formed with center pit; It is characterized in that: also comprise the outer deformable body that is connected between pedestal and the transmission rod, be embedded in the outer deformable body and can respond the deformation of outer deformable body and produce the interior deformable body of corresponding deformation and be attached at the strain gauge element that interior deformable body outside surface can be connected with external data processing device; Be formed with in the said outer deformable body and the said interior suitable containing hole of deformable body, said interior deformable body is embedded in the said containing hole.
Further, said outer deformable body and pedestal are one-body molded.
Further, said outer deformable body outside surface is being met stream one side and is being carried on the back the multiple tracks deformation groove that stream one side is formed with horizontal expansion respectively.
Further, the deformable body outside surface is formed with the plane of the said strain gauge element that is used to be sticked in said.
Further, said inside and outside deformable body closely cooperates.
Further, said in deformable body be long segment, its forward and backward is formed with respectively along the storage tank of its length direction extension, the storage tank bottom land is to be used to be sticked the plane of said strain gauge element.
Further, said in deformable body wide sphenoid for down narrow, its forward and backward is formed with the storage tank that extends along its length direction respectively, the storage tank bottom land is to be used to be sticked the plane of said strain gauge element.
Further, said containing hole is the blind hole of vertically extending, and its aperture is communicated with the center pit of said pedestal.
Further; Be provided with the compressing member that is used to compress said interior deformable body in the center pit of said pedestal; Said compressing member is formed with the cable-through hole of up/down perforation, and the center pit of said pedestal is formed with internal thread, and said compressing member outer peripheral face is formed with the external thread that can match with said internal thread.
Further, said strain gauge element is foil gauge or strain optical fiber.
The utlity model has following beneficial effect:
Sensor is made up of pedestal, outer deformable body, interior deformable body and strain gauge element; Interior deformable body is embedded in the outer deformable body and can responds the deformation of outer deformable body and produce corresponding deformation; Strain gauge element then can convert the deformation of interior deformable body into corresponding electric signal and pass to data processing equipment; Be formed with in the outer deformable body and the suitable containing hole of interior deformable body; Outer like this deformable body can accurately pass to interior deformable body with deformation quantity, can play the effect of interior deformable body of isolating and protecting and strain gauge element again, and deformable body contacts, causes damage with strain gauge element in preventing with liquid; The intensity of outer deformable body is big in addition, can bear the big and acting force that produces of flow big or moment pressure reduction; Outer deformable body and pedestal are one-body molded, have simplified structure and the advantage that improves sealing; The deformable body outside surface forms the deformation groove outside, the deformation sensitivity that can improve outer deformable body, and then the sensitivity and the measuring accuracy of raising sensor; Interior deformable body outside surface is formed with the plane of the strain gauge element that is used to be sticked, and can be convenient to adhering to of strain gauge element like this, improve strain gauge element deposit efficiency, practice thrift cost; Interior deformable body is set to long segment, and the deformation sensitivity of deformable body forms storage tank in can improving on interior deformable body, and storage tank can be used for holding strain gauge element, also can be convenient to adhering to of strain gauge element in addition; Interior deformable body is set to down the narrow wide sphenoid of, and deformable body embeds in the containing hole of outer deformable body in can being convenient to, and deformable body contacts and combination with the tight of outer deformable body in helping, and makes the deformation between outer deformable body and the interior deformable body transmit more accurate; Strain gauge element adopts strain optical fiber to have advantages such as precision height, highly sensitive, anti-electromagnetic interference (EMI), electrical insulation capability are good, temperature resistance change.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further explain.
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the component decomposition map of the utility model.
Fig. 3 is the front elevation of deformable body in the utility model.
Fig. 4 is the side view of deformable body in the utility model.
Fig. 5 is the vertical view of deformable body in the utility model.
Fig. 6 is the user mode figure of the utility model.
Embodiment
Referring to figs. 1 through shown in Figure 6; The composite strain formula sensor that a kind of flowmeter is used comprises the pedestal 1 that is formed with center pit 11, is connected outer deformable body 3 between pedestal 1 and the transmission rod 2, is embedded in the outer deformable body 3 and can responds the deformation of outer deformable body 3 and produces the interior deformable body 4 of corresponding deformation, is used to compress the compressing member 6 of interior deformable body 4 in being attached in the strain gauge element 5 that is connected with data processing equipment 7 through signal wire 51 of deformable body 4 outside surfaces and the center pit 11 that is arranged at pedestal 1.
Outer deformable body 3 is one-body molded with pedestal 1; Its outside surface is being met stream one side and is being carried on the back the multiple tracks deformation groove 31 that stream one side is formed with horizontal expansion respectively; The center is formed with and interior deformable body 4 suitable and vertically extending containing holes 32, and containing hole 32 apertures are communicated with the center pit 11 of pedestal 1.Interior deformable body 4 is embedded in the containing hole 32 of outer deformable body 3; Be the following narrow wide sphenoid of; Its forward and backward is formed with the storage tank 41 that extends along its length direction respectively; Storage tank 41 bottom lands are to be used to be sticked the plane of strain gauge element 5, and strain gauge element 5 is a foil gauge, the bottom land of deformable body 4 storage tanks 41 in it is attached at.Compressing member 6 is formed with the cable-through hole 61 that up/down perforation supplies signal wire 51 to pass, and the center pit 11 of pedestal 1 is formed with internal thread, and compressing member 6 outer peripheral faces are formed with the external thread that can match with internal thread.
With reference to shown in Figure 6; Adopted the flowmeter of the utility model; The transmission rod 2 and the stressed target sheet 9 that comprise measuring tube 8, data processing equipment 7, sensor and be connected the sensor lower end; Measuring tube 8 is provided with a connector 12, and sensor is sheathed on through pedestal 1 in the center pit of connector 12, and data processing equipment 7 is fixedly set in the upper end of connector 12; Forward and backward that need guarantee the interior deformable body 4 of sensor during assembling over against meeting flow path direction, to improve the measuring accuracy and the sensitivity of sensor.
The above; Be merely the preferred embodiment of the utility model; So can not limit the scope that the utility model is implemented with this, the equivalence of promptly 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 (10)
1. composite strain formula sensor that flowmeter is used; Comprise the pedestal that is formed with center pit; It is characterized in that: also comprise the outer deformable body that is connected between pedestal and the transmission rod, be embedded in the outer deformable body and can respond the deformation of outer deformable body and produce the interior deformable body of corresponding deformation and be attached at the strain gauge element that interior deformable body outside surface can be connected with external data processing device; Be formed with in the said outer deformable body and the said interior suitable containing hole of deformable body, said interior deformable body is embedded in the said containing hole.
2. the composite strain formula sensor that a kind of flowmeter according to claim 1 is used is characterized in that: said outer deformable body and pedestal are one-body molded.
3. the composite strain formula sensor that a kind of flowmeter according to claim 1 is used is characterized in that: said outer deformable body outside surface is being met stream one side and is being carried on the back the multiple tracks deformation groove that stream one side is formed with horizontal expansion respectively.
4. the composite strain formula sensor that a kind of flowmeter according to claim 1 is used is characterized in that: the deformable body outside surface is formed with the plane of the said strain gauge element that is used to be sticked in said.
5. the composite strain formula sensor that a kind of flowmeter according to claim 1 is used is characterized in that: said inside and outside deformable body closely cooperates.
6. the composite strain formula sensor of using according to claim 1 or 2 or 3 or 4 or 5 described a kind of flowmeters; It is characterized in that: deformable body is long segment in said; Its forward and backward is formed with the storage tank that extends along its length direction respectively, and the storage tank bottom land is to be used to be sticked the plane of said strain gauge element.
7. the composite strain formula sensor of using according to claim 1 or 2 or 3 or 4 or 5 described a kind of flowmeters; It is characterized in that: deformable body is the narrow down wide sphenoid of in said; Its forward and backward is formed with the storage tank that extends along its length direction respectively, and the storage tank bottom land is to be used to be sticked the plane of said strain gauge element.
8. the composite strain formula sensor of using according to claim 1 or 2 or 3 or 4 or 5 described a kind of flowmeters is characterized in that: the blind hole of said containing hole for vertically extending, its aperture is communicated with the center pit of said pedestal.
9. the composite strain formula sensor of using according to claim 1 or 2 or 3 or 4 or 5 described a kind of flowmeters; It is characterized in that: be provided with the compressing member that is used to compress said interior deformable body in the center pit of said pedestal; Said compressing member is formed with the cable-through hole of up/down perforation; The center pit of said pedestal is formed with internal thread, and said compressing member outer peripheral face is formed with the external thread that can match with said internal thread.
10. the composite strain formula sensor of using according to claim 1 or 2 or 3 or 4 or 5 described a kind of flowmeters, it is characterized in that: said strain gauge element is foil gauge or strain optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200823378U CN202511830U (en) | 2012-03-07 | 2012-03-07 | Composite strain type sensor for flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200823378U CN202511830U (en) | 2012-03-07 | 2012-03-07 | Composite strain type sensor for flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202511830U true CN202511830U (en) | 2012-10-31 |
Family
ID=47064309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200823378U Withdrawn - After Issue CN202511830U (en) | 2012-03-07 | 2012-03-07 | Composite strain type sensor for flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202511830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197812A (en) * | 2016-08-31 | 2016-12-07 | 成都古道尔科技有限公司 | A kind of calibrating installation for supercritical ultrasonics technology test residual stress and calibration steps thereof |
-
2012
- 2012-03-07 CN CN2012200823378U patent/CN202511830U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197812A (en) * | 2016-08-31 | 2016-12-07 | 成都古道尔科技有限公司 | A kind of calibrating installation for supercritical ultrasonics technology test residual stress and calibration steps thereof |
| CN106197812B (en) * | 2016-08-31 | 2022-04-01 | 成都古道尔科技有限公司 | Calibration device and calibration method for testing residual stress by ultrasonic method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121031 Effective date of abandoning: 20140409 |
|
| RGAV | Abandon patent right to avoid regrant |