CN204269129U - A kind of eddy-current transducer gauge head - Google Patents
A kind of eddy-current transducer gauge head Download PDFInfo
- Publication number
- CN204269129U CN204269129U CN201420679804.4U CN201420679804U CN204269129U CN 204269129 U CN204269129 U CN 204269129U CN 201420679804 U CN201420679804 U CN 201420679804U CN 204269129 U CN204269129 U CN 204269129U
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- China
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- volute body
- axle center
- diameter
- gauge head
- eddy
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- Expired - Fee Related
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Abstract
The utility model relates to pneumatic type sensor technical field, be specifically related to a kind of eddy-current transducer gauge head, comprise volute body, described volute body upper end diameter is large, lower end diameter is little, the upper end edge housing tangential direction that whirlpool diameter of the housing is large is provided with input port, the lower end that diameter is little is exhausr port, volute body axle center place is provided with axle center pipe from top to down, it is delivery outlet that volute body end face is extended on pipe top, axle center, delivery outlet is provided with the corrugated tube of connecting sensor, bottom contracting is not concordant with volute body bottom face in its lower surface of whirlpool enclosure interior, axle center pipe external diameter is less than volute body lower end diameter, head links with corrugated tube and sensor, at impact protector sensor from damage, and gauge head feeds back metrical information with eddy current type, measure sensitive and accurate.
Description
Technical field
The utility model relates to pneumatic type sensor technical field, is specifically related to a kind of eddy-current transducer gauge head.
Background technology
Pneumatic transmitter is contact detection element not, and the various physical characteristicss utilizing gas in flow field to flow to present are to measure various physical quantity.Dimensional accuracy, positioning precision, numeration, correction, range finding, Liquid level can be detected, determine whether, material detection etc., be widely used in the industrial production.Such as; need to use pneumatic transmitter when carrying out the not high positioning distance measuring of precision to some heavy-duty machines or part in production; existing monolithic construction is to the sensor that heavy-duty machines or part carry out coarse positioning range finding; its gauge head and sensor one; complex structure; measure insensitive, often can cause sensor degradation owing to making sensor and measured object clash into because of carelessness aborning, cause damage.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned defect; there is provided a kind of eddy-current transducer gauge head, this gauge head links with corrugated tube and sensor, plays buffer action protection sensor from damage when clashing into; and gauge head feeds back metrical information with eddy current type, measure sensitive and accurate.
The utility model solves its technical matters by the following technical solutions:
A kind of eddy-current transducer gauge head, comprise volute body, described volute body upper end diameter is large, lower end diameter is little, the upper end edge housing tangential direction that whirlpool diameter of the housing is large is provided with input port, the lower end that diameter is little is exhausr port, volute body axle center place is provided with axle center pipe from top to down, it is delivery outlet that volute body end face is extended on pipe top, axle center, delivery outlet is provided with the corrugated tube of connecting sensor, bottom contracting is not concordant with volute body bottom face in its lower surface of whirlpool enclosure interior, and axle center pipe external diameter is less than volute body lower end diameter.
Described axle center pipe forms minor air cell with volute body.There is strong swirl flow in signal air-flow, flow to exhausr port in minor air cell.
Described axle center pipe bottom nozzle is inside globoidal structure.
Described axle center pipe bottom face is 0.2-0.6mm to the distance of volute body bottom face.
The beneficial effects of the utility model are: adopt such scheme, this side head links with corrugated tube and sensor input, buffer action is played when there is shock, prevent sensor degradation, input end and the sensor feeder of gauge head link, signal air-flow flows into from input port, strong vortex motion is done in volute body, when exhausr port is away from measured object, the swirl flow flowed out from minor air cell does not receive obstruction, delivery outlet output pressure is almost atmospheric pressure, but when gauge head exhausr port is near measured object, the swirl flow flowed out from minor air cell is hindered, the Involving velocity flowing to eddy current air chamber center from ambient gas disappears, delivery outlet pressure is negative pressure, signal is sent to the sensor linked with gauge head by delivery outlet, sensor detects according to signal, eddy current signal is more sensitive than general airflow signal, sensor is made to detect in time and send signal, prevent from clashing into, and the result detected is more accurate.
Accompanying drawing explanation
By the detailed description below in conjunction with accompanying drawing, aforesaid and other object, the feature and advantage of the utility model will become apparent.
Fig. 1 is structural representation of the present utility model.
Wherein: 1 is volute body, 2 is axle center pipe, and 3 is minor air cell, and 4 is input port, and 5 is corrugated tube, and 6 is exhausr port, and 7 is delivery outlet.
Embodiment
A kind of eddy-current transducer gauge head as shown in Figure 1, comprise volute body 1, the upper end diameter of volute body is large, lower end diameter is little, the tangential direction of the housing circumference of the upper end edge volute body 1 that diameter is large is set to input port 4, input port 4 connecting sensor feeder, input signal air-flow, the lower end that volute body 1 diameter is little is exhausr port 6, the axle center place of volute body 1 is set to axle center pipe 2 from top to down, the external diameter of axle center pipe 2 is less than volute body 1 lower inner diameter, minor air cell 3 is formed between axle center pipe 2 and volute body 1, the signal air-flow of input is swirl flow in minor air cell 3 how, the end face formation delivery outlet 7 of volute body is extended on the top of axle center pipe 2, delivery outlet 7 is for being connected with sensor signal end of probe, delivery outlet 7 is provided with corrugated tube 5, corrugated tube 5 has certain shrinkability and plays buffer action when clashing into, prevent sensor degradation, the lower end reduction of area of axle center pipe 2 is in volute body 1 bottom, the bottom face distance 0.2-0.6mm of lower surface and volute body 1, when this distance impels exhausr port 6 to be subject to hindering, to flow to minor air cell 4 forming reactions air-flow more smooth and easy sensitive for ambient gas, the camber structure that combined axis core barrel 2 low port is inside, reaction gas flow is flowed more smooth and easy, react more sensitive, delivery outlet 7 flow direction sensor of the reaction gas flow warp beam core barrel 2 after obstruction, sensor detects according to reaction gas flow.
The utility model is not limited to described embodiment; those skilled in the art is not departing from spirit of the present utility model namely openly in scope; still can do some revise or change, therefore the scope that rights protection scope of the present utility model limits with claims is as the criterion.
Claims (4)
1. an eddy-current transducer gauge head, comprise volute body, it is characterized in that: described volute body upper end diameter is large, lower end diameter is little, the upper end edge housing tangential direction that whirlpool diameter of the housing is large is provided with input port, the lower end that diameter is little is exhausr port, volute body axle center place is provided with axle center pipe from top to down, it is delivery outlet that volute body end face is extended on pipe top, axle center, delivery outlet is provided with the corrugated tube of connecting sensor, bottom contracting is not concordant with volute body bottom face in its lower surface of whirlpool enclosure interior, and axle center pipe external diameter is less than volute body lower end diameter.
2. a kind of eddy-current transducer gauge head according to claim 1, is characterized in that: described axle center pipe forms minor air cell with volute body.
3. a kind of eddy-current transducer gauge head according to claim 1, is characterized in that: described axle center pipe bottom nozzle is inside globoidal structure.
4. a kind of eddy-current transducer gauge head according to claim 1, is characterized in that: described axle center pipe bottom face is 0.2-0.6mm to the distance of volute body bottom face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420679804.4U CN204269129U (en) | 2014-11-13 | 2014-11-13 | A kind of eddy-current transducer gauge head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420679804.4U CN204269129U (en) | 2014-11-13 | 2014-11-13 | A kind of eddy-current transducer gauge head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204269129U true CN204269129U (en) | 2015-04-15 |
Family
ID=52803991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420679804.4U Expired - Fee Related CN204269129U (en) | 2014-11-13 | 2014-11-13 | A kind of eddy-current transducer gauge head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204269129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729132A (en) * | 2020-12-16 | 2021-04-30 | 贵州电网有限责任公司 | Weather-proof corrosion-resistant layer thickness measuring device for steel tower |
-
2014
- 2014-11-13 CN CN201420679804.4U patent/CN204269129U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112729132A (en) * | 2020-12-16 | 2021-04-30 | 贵州电网有限责任公司 | Weather-proof corrosion-resistant layer thickness measuring device for steel tower |
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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: 20150415 Termination date: 20161113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |