CN204255560U - A kind of pressure transducer sonde configuration - Google Patents
A kind of pressure transducer sonde configuration Download PDFInfo
- Publication number
- CN204255560U CN204255560U CN201420703779.9U CN201420703779U CN204255560U CN 204255560 U CN204255560 U CN 204255560U CN 201420703779 U CN201420703779 U CN 201420703779U CN 204255560 U CN204255560 U CN 204255560U
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- Prior art keywords
- hole
- elastic diaphragm
- pressure sensor
- fiber bundle
- sealed
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- Expired - Fee Related
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- 239000000523 sample Substances 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
本实用新型提供一种压力传感器探头结构，包括传感器外壳、光纤束、弹性膜片和定位件，传感器外壳的内部为两端贯通的孔型结构，弹性膜片密封固定在孔型结构内，且孔型结构的两端由弹性膜片密封隔断，所述光纤束的一端通过定位件固定设置在孔型结构内弹性膜片的一侧，光纤束与孔型结构同轴，且光纤束与定位件之间以及定位件与传感器外壳之间均为密封结构，光纤束与弹性膜片相互垂直设置。以解决现有压力传感器中的探头结构并非密封结构，探头在工作时容易受到外界干扰，工作不稳定，检测误差较大，同时，探头中的敏感元件容易受到损伤等问题。本实用新型属于气液压力传感器探头领域。
The utility model provides a probe structure of a pressure sensor, which includes a sensor housing, an optical fiber bundle, an elastic diaphragm and a positioning piece. The inside of the sensor housing is a hole structure with two ends through, and the elastic diaphragm is sealed and fixed in the hole structure, and The two ends of the hole structure are sealed and separated by an elastic diaphragm. One end of the optical fiber bundle is fixed on one side of the elastic diaphragm in the hole structure through a positioning piece. There is a sealed structure between the parts and between the positioning part and the sensor housing, and the optical fiber bundle and the elastic diaphragm are arranged perpendicular to each other. In order to solve the problem that the probe structure in the existing pressure sensor is not a sealed structure, the probe is easily disturbed by the outside when it is working, the work is unstable, the detection error is large, and the sensitive elements in the probe are easily damaged. The utility model belongs to the field of gas-liquid pressure sensor probes.
Description
Technical field
The utility model relates to a kind of sensor probe, is specifically related to a kind of sensor probe configuration measuring liquid or gas pressure intensity.
Background technology
Pressure transducer is a kind of sensor measuring liquid or gas pressure intensity, is widely used in many fields, is essential element in Inspect and control, not only can measures pressure, also can indirect inspection flow, flow velocity etc.Now commercially have the pressure transducer of multiple different technologies principle, common are resistance-type, condenser type, piezoelectric type etc.Along with the development of optical communication technology, Fibre Optical Sensor becomes the focus in association area gradually, because it is highly sensitive, volume is little, electrical insulating property is good, anti-electromagnetic interference capability is strong, easily realize remote measurement, well can be applicable to some advantages such as special industry and rugged surroundings obtain industry and extensively approve, reflection-type optical fiber pressure transducer is exactly use comparatively general one in existing pressure transducer, but the sonde configuration in existing reflection-type optical fiber pressure transducer is not hermetically-sealed construction, probe is operationally easily subject to external interference, job insecurity, metrical error is larger, simultaneously, sensitive element in probe easily sustains damage.
Summary of the invention
The purpose of this utility model is: provide a kind of pressure transducer sonde configuration, be not hermetically-sealed construction with the sonde configuration solved in existing pressure transducer, probe is operationally easily subject to external interference, job insecurity, metrical error is larger, meanwhile, the problems such as the sensitive element in probe easily sustains damage.
Scheme of the present utility model is as follows: a kind of pressure transducer sonde configuration, comprise sensor outer housing, fibre bundle, flexible sheet and keeper, the inside of sensor outer housing is the through pass structures in two ends, flexible sheet sealing is fixed in pass structure, and the two ends of pass structure seal partition by flexible sheet, one end of described fibre bundle is fixedly installed on the side of pass structure internal dielectric membrane sheet by keeper, fibre bundle is coaxial with pass structure, and be hermetically-sealed construction between fibre bundle and keeper and between keeper and sensor outer housing, fibre bundle and flexible sheet are mutually vertical to be arranged, and the distance between the end face of fibre bundle and flexible sheet is 0.5 ~ 1.0mm.
Preferably, described pass structure comprises the first hole and the second hole, first hole is communicated with the second hole end surface and the two is coaxial, the diameter in the first hole is greater than the diameter in the second hole of the first hole and the second hole connectivity part, the diameter of described flexible sheet is also greater than the diameter in the second hole of the first hole and the second hole connectivity part, one end of keeper to be stretched in the first hole and by the connectivity part of flexible sheet sealing contact in the first hole and the second hole, provide and a kind ofly flexible sheet is sealed the feasible scheme be fixed in pass structure, and structure is simple, be convenient to realize.
Preferably, also include baffle ring, the external diameter of baffle ring is greater than the diameter in the second hole of the first hole and the second hole connectivity part, baffle ring compresses and is arranged between flexible sheet and the second hole, for ensureing the sealing of flexible sheet, also can play certain buffer action simultaneously, when avoiding fluid to enter, directly impact flexible sheet.
Preferably, compress between baffle ring and flexible sheet and be provided with O-ring seal, ensure that sealing effectiveness is better.
Preferably, the fastening structure for interference fit between one end in the first hole and the first hole stretched by described keeper, or the screw connection structure for seal between one end in the first hole and the first hole stretched by keeper, and mechanical type fixed sturcture, is convenient to handling and overhauls.
Preferably, described keeper offers through hole, through hole is provided with internal thread, the outer side seal of fibre bundle has been locked sleeve pipe, the arranged outside of sleeve pipe has the external thread matched with through hole, sleeve pipe to screw to be arranged in the through hole of keeper, ensures that fibre bundle sealing is fixing on the positioning element, fibre bundle is fixed on the positioning element removably simultaneously, is convenient to the replacing of fibre bundle and the maintenance of probe.
Preferably, the setting distance of the end face of described fibre bundle and flexible sheet be 0.5mm, and this setting distance is for optimizing setting distance, and reception optical fiber is coupled more reflected light, and sensor Effect on Detecting is better.
Preferably, described second hole is provided with filter screen, filter screen, forms fluid detection chamber between flexible sheet and the second hole, filter screen effectively filters and enters gas in fluid detection chamber or liquid, and preventing impurity from entering fluid detection chamber affects pressure detection.
Preferably, in fluid detection chamber the second hole sidewall on offer the through hole for subsequent use of through sensor outer housing, when filter screen is blocked, make to treat that the gas of pressure measurement or liquid enter fluid detection chamber by through hole for subsequent use, ensure that probe can normally work, detection stability is provided.
The utility model compared with prior art, major advantage adopts mechanical sealing structure between flexible sheet and fibre bundle, effective guarantee probe is reliable and stable at work, not by external interference, avoid error, meanwhile, the inner sensitive element of available protecting probe is injury-free, and mechanical type fixes fibre bundle when also solving use and the centering problem of flexible sheet for reflecting; Sonde configuration is simple, is convenient to assembling and maintain and replace.
Accompanying drawing explanation
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is the sectional view of sensor outer housing.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below with reference to accompanying drawings the utility model is described in further detail,
Embodiment:
See figures.1.and.2, the present embodiment provides a kind of pressure transducer sonde configuration,
Comprise: fibre bundle 1, sleeve pipe 2, sensor outer housing 3, flexible sheet 5, keeper 6, baffle ring 7, filter screen 9 and fluid detection chamber 10,
The material of described flexible sheet 5 is low-alloy super-strength steel 35CrMnSiA, sensor outer housing 3 is straight barrel type structure, the inside of sensor outer housing 3 is the through pass structures 4 in two ends, pass structure 4 comprises the first hole 41 and the second hole 42, first hole 41 is communicated with the second hole 42 end face and the two is coaxial, the diameter in the first hole 41 is greater than the diameter in the second hole 42 of the first hole 41 and the second hole 42 connectivity part, the diameter of described flexible sheet 5 and the external diameter of baffle ring are all greater than the diameter in the second hole 42 of the first hole 41 and the second hole 42 connectivity part, one end of keeper 6 to be stretched in the first hole 41 and by the connectivity part of flexible sheet 5 sealing contact in the first hole 41 and the second hole 42, baffle ring 7 compresses and is arranged between flexible sheet 5 and the second hole 42, can compress between baffle ring 7 and flexible sheet 5 and O-ring seal 8 is set, guarantee sealing effectiveness is better, ensure that fibre bundle 1 is coaxial with the first hole 41, and fibre bundle 1 is arranged with flexible sheet 5 is mutually vertical, the end face of fibre bundle 1 and the setting distance of flexible sheet 5 are 0.5mm, this setting distance sets up distance for optimizing, reception optical fiber is coupled more reflected light, sensor Effect on Detecting is better.
For ensureing between fibre bundle 1 and keeper 6 and being hermetically-sealed construction between keeper 6 and sensor outer housing 3, the fastening structure for interference fit between one end in the first hole 41 and the first hole 41 stretched by described keeper 6; Keeper 6 offers through hole 61, through hole 61 is provided with internal thread, and the outer side seal of fibre bundle 1 has been locked sleeve pipe 2, and the arranged outside of sleeve pipe 2 has the external thread matched with through hole 61, sleeve pipe 2 screws and is arranged in the through hole 61 of keeper 6, ensures that fibre bundle 1 sealing is fixed on keeper 6;
Described second hole 42 is provided with filter screen 9, filter screen 9, forms fluid detection chamber 10 between flexible sheet 5 and the second hole 42, filter screen 9 effectively filters the gas or liquid that enter in fluid detection chamber 10, and preventing impurity from entering fluid detection chamber 10 affects pressure detection; In fluid detection chamber 10 second hole 42 sidewall on offer the through hole for subsequent use 11 of through sensor outer housing 3, when filter screen 9 is blocked, make to treat that the gas of pressure measurement or liquid enter fluid detection chamber 10 by through hole 11 for subsequent use, ensure that probe can normally work, detection stability is provided.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703779.9U CN204255560U (en) | 2014-11-21 | 2014-11-21 | A kind of pressure transducer sonde configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703779.9U CN204255560U (en) | 2014-11-21 | 2014-11-21 | A kind of pressure transducer sonde configuration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204255560U true CN204255560U (en) | 2015-04-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420703779.9U Expired - Fee Related CN204255560U (en) | 2014-11-21 | 2014-11-21 | A kind of pressure transducer sonde configuration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204255560U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359609A (en) * | 2014-11-21 | 2015-02-18 | 贵州大学 | Pressure sensor probe structure |
| CN105004451A (en) * | 2015-05-27 | 2015-10-28 | 成都德麦科技有限公司 | Pressure sensor |
| CN113266964A (en) * | 2021-04-30 | 2021-08-17 | 杭州三花研究院有限公司 | Valve assembly and sensor |
| WO2022228361A1 (en) * | 2021-04-30 | 2022-11-03 | 杭州三花研究院有限公司 | Valve assembly and sensor |
-
2014
- 2014-11-21 CN CN201420703779.9U patent/CN204255560U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359609A (en) * | 2014-11-21 | 2015-02-18 | 贵州大学 | Pressure sensor probe structure |
| CN105004451A (en) * | 2015-05-27 | 2015-10-28 | 成都德麦科技有限公司 | Pressure sensor |
| CN113266964A (en) * | 2021-04-30 | 2021-08-17 | 杭州三花研究院有限公司 | Valve assembly and sensor |
| WO2022228361A1 (en) * | 2021-04-30 | 2022-11-03 | 杭州三花研究院有限公司 | Valve assembly and sensor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20171121 |