CN104359609A - Pressure sensor probe structure - Google Patents
Pressure sensor probe structure Download PDFInfo
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- CN104359609A CN104359609A CN201410671451.8A CN201410671451A CN104359609A CN 104359609 A CN104359609 A CN 104359609A CN 201410671451 A CN201410671451 A CN 201410671451A CN 104359609 A CN104359609 A CN 104359609A
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- hole
- flexible sheet
- keeper
- pressure transducer
- fibre bundle
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Abstract
The invention provides a pressure sensor probe structure, and belongs to the field of gas-liquid pressure sensor probes. The pressure sensor probe structure comprises a sensor shell, a fiber optics bundle, an elastic membrane and a positioning piece. The interior of the sensor shell is of a hole structure with the two ends communicated. The elastic membrane is fixed into the hole structure in a sealing mode. The two ends of the hole structure are sealed and partitioned through the elastic membrane. One end of the fiber optics bundle is fixedly arranged on one side of the elastic membrane inside the hole structure through the positioning piece, the fiber optics bundle is coaxial with the hole structure, a sealing structure is formed between the fiber optics bundle and the positioning piece, a sealing structure is formed between the positioning piece and the sensor shell, and the fiber optics bundle is perpendicular to the elastic membrane. The problems that a probe structure of an existing pressure sensor is not of a sealing structure, a probe is prone to being affected by the outside during working, working is not stable, the detecting error is large, and meanwhile sensitive elements in the probe are prone to damage are solved.
Description
Technical field
The present invention relates to a kind of sensor probe, be 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 object of the invention is to: a kind of pressure transducer sonde configuration is provided, 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.
The solution of the present invention 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 present invention 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 invention;
Fig. 2 is the sectional view of sensor outer housing.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, the present invention is described in further detail below with reference to accompanying drawings,
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)
1. a pressure transducer sonde configuration, comprise fibre bundle (1), sensor outer housing (3) and flexible sheet (5), the inside of sensor outer housing (3) is the through pass structures (4) in two ends, it is characterized in that: also comprise keeper (6), described flexible sheet (5) sealing is fixed in pass structure (4), and the two ends of pass structure (4) seal partition by flexible sheet (5), one end of described fibre bundle (1) is fixedly installed on the side of pass structure (4) internal dielectric membrane sheet (5) by keeper (6), fibre bundle (1) is coaxial with pass structure (4), and be hermetically-sealed construction between fibre bundle (1) and keeper (6) and between keeper (6) and sensor outer housing (3), fibre bundle (1) is arranged with flexible sheet (5) is mutually vertical, and the distance between the end face of fibre bundle (1) and flexible sheet (5) is 0.5 ~ 1.0mm.
2. a kind of pressure transducer sonde configuration according to claim 1, it is characterized in that: described 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 second hole (42) of the first hole (41) and the second hole (42) connectivity part, the diameter of described flexible sheet (5) is also greater than the diameter in 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 connectivity part by flexible sheet (5) sealing contact in the first hole (41) with the second hole (42).
3. a kind of pressure transducer sonde configuration according to claim 2, it is characterized in that: also include baffle ring (7), the external diameter of baffle ring (7) is greater than the diameter in second hole (42) of the first hole (41) and the second hole (42) connectivity part, and baffle ring (7) compresses and is arranged between flexible sheet (5) and the second hole (42).
4. a kind of pressure transducer sonde configuration according to claim 3, is characterized in that: compress between baffle ring (7) and flexible sheet (5) and be provided with O-ring seal (8).
5. a kind of pressure transducer sonde configuration according to claim 2, it is characterized in that: the fastening structure for interference fit between one end in the first hole (41) and the first hole (41) stretched by described keeper (6), or one end in the first hole (41) stretched by keeper (6) and be the screw connection structure sealed between the first hole (41).
6. a kind of pressure transducer sonde configuration according to claim 1, it is characterized in that: described keeper (6) offers through hole (61), (61) are provided with internal thread to through hole, the outer side seal of fibre bundle (1) has been locked sleeve pipe (2), in the through hole (61) that the arranged outside of sleeve pipe (2) has the external thread matched with through hole (61), sleeve pipe (2) to screw to be arranged on keeper (6).
7. a kind of pressure transducer sonde configuration according to claim 1, is characterized in that: the end face of described fibre bundle (1) and the setting distance of flexible sheet (5) are 0.5mm.
8. a kind of pressure transducer sonde configuration according to claim 1, is characterized in that: 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).
9. a kind of pressure transducer sonde configuration according to claim 8, is characterized in that: in fluid detection chamber (10) second hole (42) sidewall on offer the through hole for subsequent use (11) of through sensor outer housing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671451.8A CN104359609A (en) | 2014-11-21 | 2014-11-21 | Pressure sensor probe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671451.8A CN104359609A (en) | 2014-11-21 | 2014-11-21 | Pressure sensor probe structure |
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| Publication Number | Publication Date |
|---|---|
| CN104359609A true CN104359609A (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410671451.8A Pending CN104359609A (en) | 2014-11-21 | 2014-11-21 | Pressure sensor probe structure |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679879A (en) * | 2017-03-08 | 2017-05-17 | 北京航空航天大学 | Multi-probe total pressure measuring device for measuring total pressure distribution in flow channel |
| CN107875507A (en) * | 2017-12-28 | 2018-04-06 | 北京灵泽医药技术开发有限公司 | Two-way mechanism and detection means, system, extrusion infusing pipeline and fluid control devices |
| CN109253835A (en) * | 2018-08-31 | 2019-01-22 | 中国船舶重工集团公司第七〇五研究所 | A kind of linear array environmental pressure device for accurately measuring and method |
| CN109900419A (en) * | 2019-03-19 | 2019-06-18 | 刘威 | A kind of elastic pressure sensor probe configuration |
| CN111998990A (en) * | 2020-08-18 | 2020-11-27 | 重庆大学 | Porous array optical fiber probe for multi-direction high-speed dynamic pressure measurement and measurement system thereof |
| CN114459662A (en) * | 2022-02-08 | 2022-05-10 | 依利特(苏州)分析仪器有限公司 | Pressure measuring device of liquid chromatograph |
| CN117427435A (en) * | 2023-12-18 | 2024-01-23 | 河北永盛汽车配件制造有限公司 | Air filtration module and method for producing the same |
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| CN202092818U (en) * | 2011-05-26 | 2011-12-28 | 昆山市南粤敏通光电技术有限公司 | Optical fiber pressure sensor |
| CN103557984A (en) * | 2013-11-04 | 2014-02-05 | 贵州大学 | Method and structure for packaging probes of differential pressure sensor |
| CN103557985A (en) * | 2013-11-04 | 2014-02-05 | 贵州大学 | Differential pressure sensing method and sensor thereof |
| CN103557986A (en) * | 2013-11-04 | 2014-02-05 | 贵州大学 | Method and device for compensating for intensity of differential pressure sensor |
| CN203551181U (en) * | 2013-11-04 | 2014-04-16 | 贵州大学 | Intensity compensation device of differential pressure transducer |
| CN203551182U (en) * | 2013-11-04 | 2014-04-16 | 贵州大学 | Packaging structure of differential pressure probe |
| CN203551183U (en) * | 2013-11-04 | 2014-04-16 | 贵州大学 | Reflective optical-fiber-bundle differential pressure sensor with intensity compensation |
| CN204255560U (en) * | 2014-11-21 | 2015-04-08 | 贵州大学 | A kind of pressure transducer sonde configuration |
-
2014
- 2014-11-21 CN CN201410671451.8A patent/CN104359609A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092818U (en) * | 2011-05-26 | 2011-12-28 | 昆山市南粤敏通光电技术有限公司 | Optical fiber pressure sensor |
| CN103557984A (en) * | 2013-11-04 | 2014-02-05 | 贵州大学 | Method and structure for packaging probes of differential pressure sensor |
| CN103557985A (en) * | 2013-11-04 | 2014-02-05 | 贵州大学 | Differential pressure sensing method and sensor thereof |
| CN103557986A (en) * | 2013-11-04 | 2014-02-05 | 贵州大学 | Method and device for compensating for intensity of differential pressure sensor |
| CN203551181U (en) * | 2013-11-04 | 2014-04-16 | 贵州大学 | Intensity compensation device of differential pressure transducer |
| CN203551182U (en) * | 2013-11-04 | 2014-04-16 | 贵州大学 | Packaging structure of differential pressure probe |
| CN203551183U (en) * | 2013-11-04 | 2014-04-16 | 贵州大学 | Reflective optical-fiber-bundle differential pressure sensor with intensity compensation |
| CN204255560U (en) * | 2014-11-21 | 2015-04-08 | 贵州大学 | A kind of pressure transducer sonde configuration |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679879A (en) * | 2017-03-08 | 2017-05-17 | 北京航空航天大学 | Multi-probe total pressure measuring device for measuring total pressure distribution in flow channel |
| CN107875507A (en) * | 2017-12-28 | 2018-04-06 | 北京灵泽医药技术开发有限公司 | Two-way mechanism and detection means, system, extrusion infusing pipeline and fluid control devices |
| CN109253835A (en) * | 2018-08-31 | 2019-01-22 | 中国船舶重工集团公司第七〇五研究所 | A kind of linear array environmental pressure device for accurately measuring and method |
| CN109900419A (en) * | 2019-03-19 | 2019-06-18 | 刘威 | A kind of elastic pressure sensor probe configuration |
| CN109900419B (en) * | 2019-03-19 | 2020-06-26 | 苏州新意达仪器科技有限公司 | Elastic pressure sensor probe structure |
| CN111998990A (en) * | 2020-08-18 | 2020-11-27 | 重庆大学 | Porous array optical fiber probe for multi-direction high-speed dynamic pressure measurement and measurement system thereof |
| CN114459662A (en) * | 2022-02-08 | 2022-05-10 | 依利特(苏州)分析仪器有限公司 | Pressure measuring device of liquid chromatograph |
| CN117427435A (en) * | 2023-12-18 | 2024-01-23 | 河北永盛汽车配件制造有限公司 | Air filtration module and method for producing the same |
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Application publication date: 20150218 |