CN202255314U - Pneumatic-to-current conversion device for pneumatic measurement - Google Patents
Pneumatic-to-current conversion device for pneumatic measurement Download PDFInfo
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- CN202255314U CN202255314U CN2011204225491U CN201120422549U CN202255314U CN 202255314 U CN202255314 U CN 202255314U CN 2011204225491 U CN2011204225491 U CN 2011204225491U CN 201120422549 U CN201120422549 U CN 201120422549U CN 202255314 U CN202255314 U CN 202255314U
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- open cavity
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Abstract
The utility model belongs to the technical field of precision measurement, and particularly relates to a pneumatic-to-current conversion device for pneumatic measurement. The device has a simple structure, and is convenient, practical and low in cost. The device comprises a substrate, wherein an air source air connector is arranged at one end of the substrate, an air measurement air connector is arranged at the other end of the substrate, and the air source air connector and the air measurement air connector form an air course. An open cavity is formed between the air source air connector and the air measurement air connector. A coil holder, a sensor coil and a corrugated pipe component are arranged in the open cavity, wherein the sensor coil and the corrugated pipe component are connected with a cable; the coil holder is fixedly arranged on the substrate; the cable passes through a fixing nut and a sealing ring, and then is welded together with the sensor coil; and the corrugated pipe component consists of a corrugated pipe substrate, a corrugated pipe and an end cap which is provided with a sensor magnetic core. The device is simple in structure, and is convenient and practical; and a sensitive element adopts a corrugated pipe form, so that the dependence of a core part on a foreign product is eliminated, and production cost is decreased.
Description
Technical field
The utility model belongs to the Technology of Precision Measurement field, is specifically related to a kind of simple in structurely, and gas-electric converter is used in convenient and practical and the low pneumatic gauging of cost.
Background technology
Pneumatic gauging is the technology of carrying out linear measure longimetry through the variation of air pressure or flow.First air-gauge history of being born and having an appointment 80 years in the world, the pneumatic gauging technology in the history of state-owned nearly five more than ten years.Pneumatic gauging is widely used in multiple field of measurement with its superior usability.
Pneumatic gauging generally is made up of pneumatic gauging head and indication portion two parts.Measuring head utilizes the nozzle-baffle mechanism principle, converts the variation of workpiece size the variation of gaseous tension or flow into, and portion shows through indication.
There are float type air-gauge and two kinds of forms of pneumatic electron beam amount appearance in the indication portion of pneumatic gauging.The float type air-gauge mainly through float indication measurement result, can't carry out digitized processing, has satisfied not the demand of modern quality control to measuring.Pneumatic electron beam amount appearance belongs to emerging amount appearance, and its core component is a gas-electric converter, at present because the restriction of domestic technique condition, mainly dependence on import.
Summary of the invention
The purpose of the utility model is to overcome defective of the prior art and provides a kind of simple in structure, and gas-electric converter is used in the convenient and practical and low pneumatic gauging of cost.
The purpose of the utility model is achieved in that and comprises matrix that the gas that the source of the gas gas joint that one end of said matrix is offered and the other end of matrix are offered is surveyed the gas joint and constituted a gas circuit; Described source of the gas gas joint and gas are surveyed between the gas joint and are provided with an open cavity, and described open inside cavity is disposed with coil holder, cell winding that links to each other with cable and bellows component; Described coil holder is fixedly mounted on the matrix, and described cell winding is fixedly mounted on the coil holder, between described coil holder and the hold-down nut O-ring seal is installed, and described cable passes hold-down nut, O-ring seal and cell winding and welds together; Described bellows component is by the corrugated tube matrix, and corrugated tube is formed with the plug that has the sensor magnetic core, and described sensor magnetic core is set in cell winding inside, and described sensor magnetic core does not link to each other with cell winding; Described corrugated tube matrix set inside has a T shape cavity; Described T shape cavity one end links to each other with bellows interior; Described T shape cavity second end links to each other with the open cavity of source of the gas gas joint on matrix; One end of the zeroing throttling valve cavity that is provided with on the 3rd end of described T shape cavity and the matrix links to each other, and the other end of described zeroing throttling valve cavity is provided with the zeroing throttling valve; Be interference fit between described bellows component and the open cavity; Be provided with the constant voltage throttle orifice between the open cavity on described source of the gas gas joint and the matrix; Be provided with throttle orifice between described source of the gas gas joint and the open cavity.
The utlity model has following advantage:
1, simple in structure, convenient and practical.
2, sensitive element adopts the corrugated tube form, has broken away from the dependence of core component to external product, has reduced production cost.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model corrugated tube sensitive element structure synoptic diagram.
Embodiment
Like Fig. 1, shown in 2, the utility model comprises matrix 2, and the source of the gas gas joint 6 that an end of said matrix 2 is offered is surveyed gas circuit of gas joint 4 formations with the gas that the other end of matrix 2 is offered; Described source of the gas gas joint 6 and gas are surveyed between the gas joint 4 and are provided with an open cavity 18, and described open cavity 18 inside are disposed with coil holder 11, the cell winding 3 and the bellows component 8 that link to each other with cable 5; Described coil holder 11 is fixedly mounted on the matrix 2; Described cell winding 3 is fixedly mounted on the coil holder 11; Between described coil holder 11 and the hold-down nut 13 O-ring seal 12 is installed, described cable 5 passes hold-down nut 13, O-ring seal 12 welds together with cell winding 3; Described bellows component 8 is by corrugated tube matrix 17, and corrugated tube 16 is formed with the plug that has sensor magnetic core 7 15, and described sensor magnetic core 7 is set in cell winding 3 inside, and described sensor magnetic core 7 does not link to each other with cell winding 3; Described corrugated tube matrix 17 set inside have a T shape cavity 19; Described T shape cavity 19 1 ends and 16 inner linking to each other of corrugated tube; Described T shape cavity 19 second ends link to each other with the open cavity 18 of source of the gas gas joint 6 on matrix 2; One end of the zeroing throttling valve cavity 14 that is provided with on the 3rd end of described T shape cavity 19 and the matrix 2 links to each other, and the other end of described zeroing throttling valve cavity 14 is provided with the throttling valve 1 that returns to zero; Be interference fit between described bellows component 8 and the open cavity 18; Be provided with constant voltage throttle orifice 10 between the open cavity 18 on described source of the gas gas joint 6 and the matrix 2; Be provided with throttle orifice 9 between described source of the gas gas joint 6 and the open cavity 18.
As shown in Figure 1, the utility model measuring gas channel is the differential pressure type gas circuit.Get into gas-electric converter through the air that filters, reduce pressure with constant pressure; After throttle orifice 9 and constant voltage throttle orifice 10, get into the inner chamber and the exocoel of corrugated tube respectively, described inner chamber is by zeroing throttling valve cavity 15, T shape cavity 16, and the inside of corrugated tube 12 and constant voltage throttle orifice 10 are formed, and the pressure representative of inner chamber is Py; Described exocoel is by throttle orifice 9, coil holder 11, and bellows component 8 gentle survey gas joints 4 surround, and the pressure representative of exocoel is Px; Py can regulate through zeroing throttling valve 1, Px surveys gas joint 4 with gas and is connected, and its size changes with the measured piece change in size; When gas gauge head measuring workpieces, Px, Py and corrugated tube can be stable at a certain equilibrium position; The displacement of corrugated tube 12 drives sensor magnetic core 7 relative cell windings 3 and produces displacement; This will cause the variation of winding inductance quantity; The variation of this inductance value can be simulating signal or digital signal through corresponding circuit conversion, thereby has realized the conversion of gas signal to electric signal.The zeroing throttling valve 1 of the utility model is used to regulate zero-bit among Fig. 1, and throttle orifice 9 is used to regulate range and linearity with constant voltage throttle orifice 10.
Claims (1)
1. gas-electric converter is used in a pneumatic gauging, comprises matrix (2), it is characterized in that: the source of the gas gas joint (6) that an end of said matrix (2) is offered is surveyed gas circuit of gas joint (4) formation with the gas that the other end of matrix (2) is offered; Described source of the gas gas joint (6) and gas are surveyed between the gas joint (4) and are provided with an open cavity (18), and described open cavity (18) inside is disposed with coil holder (11), cell winding (3) that links to each other with cable (5) and bellows component (8); Described coil holder (11) is fixedly mounted on the matrix (2); Described cell winding (3) is fixedly mounted on the coil holder (11); Between described coil holder (11) and the hold-down nut (13) O-ring seal (12) is installed, described cable (5) passes hold-down nut (13), O-ring seal (12) welds together with cell winding (3); Described bellows component (8) is by corrugated tube matrix (17); Corrugated tube (16) and the plug (15) that has sensor magnetic core (7) are formed; Described sensor magnetic core (7) is set in cell winding (3) inside, and described sensor magnetic core (7) does not link to each other with cell winding (3); Described corrugated tube matrix (17) set inside has a T shape cavity (19); Described T shape cavity (19) one ends link to each other with corrugated tube (16) is inner; Described T shape cavity (19) second ends link to each other with the open cavity (18) of source of the gas gas joint (6) on matrix (2); The 3rd end of described T shape cavity (19) links to each other with the end that matrix (2) is gone up the zeroing throttling valve cavity (14) that is provided with, and the other end of described zeroing throttling valve cavity (14) is provided with zeroing throttling valve (1); Between described bellows component (8) and the open cavity (18) is interference fit; Be provided with constant voltage throttle orifice (10) between the open cavity (18) on described source of the gas gas joint (6) and the matrix (2); Be provided with throttle orifice (9) between described source of the gas gas joint (6) and the open cavity (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204225491U CN202255314U (en) | 2011-10-31 | 2011-10-31 | Pneumatic-to-current conversion device for pneumatic measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204225491U CN202255314U (en) | 2011-10-31 | 2011-10-31 | Pneumatic-to-current conversion device for pneumatic measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202255314U true CN202255314U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204225491U Expired - Fee Related CN202255314U (en) | 2011-10-31 | 2011-10-31 | Pneumatic-to-current conversion device for pneumatic measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202255314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308009A (en) * | 2012-03-07 | 2013-09-18 | 霍梅尔-艾达米克公司 | Measuring body of a pneumatic measuring device |
-
2011
- 2011-10-31 CN CN2011204225491U patent/CN202255314U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308009A (en) * | 2012-03-07 | 2013-09-18 | 霍梅尔-艾达米克公司 | Measuring body of a pneumatic measuring device |
| CN103308009B (en) * | 2012-03-07 | 2017-05-03 | 霍梅尔-艾达米克公司 | Measuring body of a pneumatic measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20121031 |