CN104215384A - Diaphragm guide type underwater pressure sensor for preventing diaphragm damage - Google Patents
Diaphragm guide type underwater pressure sensor for preventing diaphragm damage Download PDFInfo
- Publication number
- CN104215384A CN104215384A CN201410517647.1A CN201410517647A CN104215384A CN 104215384 A CN104215384 A CN 104215384A CN 201410517647 A CN201410517647 A CN 201410517647A CN 104215384 A CN104215384 A CN 104215384A
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- Prior art keywords
- diaphragm
- pressure sensor
- casing
- pressure
- compression chamber
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Abstract
The invention discloses a diaphragm guide type underwater pressure sensor for preventing diaphragm damage and belongs to the technical field of sensors. The diaphragm guide type underwater pressure sensor comprises a casing and a rolling diaphragm which is connected with the inner wall of the casing in a sealing mode; the inside of the casing is divided into two chambers; a pressure sensor is arranged inside the compression chamber and a differential pressure sensor is arranged on the casing wall of the compression chamber; the casing wall of the water inlet chamber is provided with a water inlet hole; the lower end of the rolling diaphragm is provided with a supporting plate which is attached to the rolling diaphragm; the cross section of the supporting plate is in an inverted U shape; the middle of the supporting plate is connected with a guide supporting rod which extends out of the casing and is connected with the casing in a sliding mode; the guide supporting rod is provided with a step which abuts against the inner wall of the casing. Two types of pressure is measured and accordingly the measurement accuracy is improved, particularly the measurement accuracy of the small pressure. The water pressure is balance through the rolling diaphragm, the rolling diaphragm is driven by the supporting plate to be compressed towards the compression chamber, meanwhile the guide effect is achieved through the guide supporting rod, and accordingly the problem that the diaphragm is easy to damage due to the too large water pressure is solved.
Description
Technical field
The present invention relates to sensor technical field, in particular to the Underwater Pressure sensor of the anti-diaphragm breakage of a kind of diaphragm guide type.
Background technology
Underwater Pressure sensor is widely used in the hydrospace detections such as tide detection, underwater robot job position mensuration; to the detection of the Underwater Pressures such as ocean; especially the detection of large pressure under deep-marine-environment; sensor must bear and measure the large hydraulic pressure at deep-sea; the change of hydraulic pressure can be measured again; this is that existing subsea pressure detects the difficult problem faced, and existing sensor is larger for the measuring error of the change of hydraulic pressure.
Summary of the invention
The object of the present invention is to provide one to bear and measure large pressure, again can the Underwater Pressure sensor of the anti-diaphragm breakage of diaphragm guide type that requires of Measurement accuracy slight pressure change, to solve the problem.
For realizing the object of the invention, the technical scheme of employing is: the Underwater Pressure sensor of the anti-diaphragm breakage of a kind of diaphragm guide type, comprises housing and enclosure interior is divided into two chambeies and the rolling diaphragm be tightly connected with inner walls; Two chambeies of enclosure interior are respectively intake antrum and compression chamber, the housing wall of compression chamber inside and compression chamber is respectively arranged with pressure transducer and differential pressure pickup, the housing wall of intake antrum offers inlet opening; Rolling diaphragm lower end is provided with the pallet be affixed with it, and the cross section of pallet is inverted U-shaped, and the middle part of pallet is connected with stretches out housing and the guiding support bar be slidably connected with housing, and guiding support bar is provided with the step being against inner walls.
Further, described pallet is metal tray.
Further, described housing is cylindric.
The invention has the beneficial effects as follows, slight pressure change is measured by differential pressure pickup, i.e. compression chamber and extraneous pressure differential, reflect the slight pressure change of water pressure fluctuations, large pressure measured by pressure transducer, detect compression cavity pressure, the i.e. actual pressure of water, measure two kinds of pressure so respectively and improve measuring accuracy, especially the measuring accuracy of slight pressure, rolling diaphragm balancing water pressure, and adopt pallet to drive rolling diaphragm to compress to compression chamber, led by guiding support bar simultaneously, avoid hydraulic pressure excessive and easily cause diaphragm impaired, increase its serviceable life and measurement range.
Accompanying drawing explanation
Fig. 1 is the cut-open view of the Underwater Pressure sensor of the anti-diaphragm breakage of diaphragm guide type provided by the invention.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Fig. 1 shows the Underwater Pressure sensor of the anti-diaphragm breakage of diaphragm guide type provided by the invention, comprises columned housing 1 and is two chambeies with by housing 1 interior separation and the rolling diaphragm 2 be connected with housing 1 inner wall sealing; Two chambeies of housing 1 inside are respectively intake antrum 11 and compression chamber 12, the housing wall of compression chamber 12 inside and compression chamber 12 is respectively arranged with pressure transducer 4 and differential pressure pickup 5, the housing wall of intake antrum 11 offers inlet opening 14; Rolling diaphragm 2 lower end is provided with the pallet 3 be affixed with it, and the cross section of pallet 3 is inverted U-shaped, and the middle part of pallet 3 is connected with stretches out housing 1 and the guiding support bar 31 be slidably connected with housing 1, and guiding support bar 31 is provided with the step 32 being against housing 1 inwall.Step 32 plays the supporting role to pallet 3 by guiding support bar 31.Pallet 3 is metal tray.
During use, by hawser or subsea equipment, sensor is placed into pressure region to be measured, during placement, water enters intake antrum 11 from inlet opening 14, and under the effect of water pressure, pallet 3 drives rolling diaphragm 2 to move in housing 1.When pallet 3 moves, diaphragm rolls along housing 1 inwall and pallet 3 outer wall, and the resistance in this process is very little, and rolling diaphragm 2 can move to compression chamber 12 direction, thus compression.Steadily, large pressure measured by pressure transducer 4, detects pressure, the i.e. actual pressure of water in compression chamber 12; Slight pressure change measured by differential pressure pickup 5, i.e. compression chamber 12 and extraneous pressure differential, reflects the slight pressure change of water pressure fluctuations.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a Underwater Pressure sensor for the anti-diaphragm breakage of diaphragm guide type, is characterized in that, comprises housing and enclosure interior is divided into two chambeies and the rolling diaphragm be tightly connected with inner walls; Two chambeies of enclosure interior are respectively intake antrum and compression chamber, the housing wall of compression chamber inside and compression chamber is respectively arranged with pressure transducer and differential pressure pickup, the housing wall of intake antrum offers inlet opening; Rolling diaphragm lower end is provided with the pallet be affixed with it, and the cross section of pallet is inverted U-shaped, and the middle part of pallet is connected with stretches out housing and the guiding support bar be slidably connected with housing, and guiding support bar is provided with the step being against inner walls.
2. the Underwater Pressure sensor of the anti-diaphragm breakage of diaphragm guide type according to claim 1, is characterized in that, described pallet is metal tray.
3. the Underwater Pressure sensor of the anti-diaphragm breakage of diaphragm guide type according to claim 1, is characterized in that, described housing is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517647.1A CN104215384A (en) | 2014-09-30 | 2014-09-30 | Diaphragm guide type underwater pressure sensor for preventing diaphragm damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410517647.1A CN104215384A (en) | 2014-09-30 | 2014-09-30 | Diaphragm guide type underwater pressure sensor for preventing diaphragm damage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104215384A true CN104215384A (en) | 2014-12-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410517647.1A Pending CN104215384A (en) | 2014-09-30 | 2014-09-30 | Diaphragm guide type underwater pressure sensor for preventing diaphragm damage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104215384A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959366A (en) * | 2019-04-12 | 2019-07-02 | 清华大学 | Depth of water probe, depth of water detection system and elementary errors water-depth measurement method |
| CN109974664A (en) * | 2019-04-28 | 2019-07-05 | 天津理工大学 | Universal level-metre |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1057815A (en) * | 1963-10-04 | 1967-02-08 | Bailey & Mackey Ltd | Improvements in or relating to differential pressure apparatus |
| US4445457A (en) * | 1981-10-15 | 1984-05-01 | Bargman Ronald D | Differential pressure indicator |
| EP0494338A1 (en) * | 1991-01-10 | 1992-07-15 | Johnson Service Company | Pressure sensing element |
| US5970797A (en) * | 1998-11-04 | 1999-10-26 | Hunter; Lemna J. | Differential pressure detection system for signaling electrically-activated valve |
| CN1540301A (en) * | 2003-10-29 | 2004-10-27 | 中国科学院力学研究所 | Device of combined sensor in use for measuring dynamical pressure and static pressure in deep sea |
| CN2881578Y (en) * | 2005-10-18 | 2007-03-21 | 齐旭 | Household sewage gas pressure meter |
| CN101922990A (en) * | 2010-07-13 | 2010-12-22 | 上海大田阀门管道工程有限公司 | Self-operated micropressure controller |
| CN204085775U (en) * | 2014-09-30 | 2015-01-07 | 成都卓微科技有限公司 | The Underwater Pressure sensor of the anti-diaphragm breakage of a kind of diaphragm guide type |
-
2014
- 2014-09-30 CN CN201410517647.1A patent/CN104215384A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1057815A (en) * | 1963-10-04 | 1967-02-08 | Bailey & Mackey Ltd | Improvements in or relating to differential pressure apparatus |
| US4445457A (en) * | 1981-10-15 | 1984-05-01 | Bargman Ronald D | Differential pressure indicator |
| EP0494338A1 (en) * | 1991-01-10 | 1992-07-15 | Johnson Service Company | Pressure sensing element |
| US5970797A (en) * | 1998-11-04 | 1999-10-26 | Hunter; Lemna J. | Differential pressure detection system for signaling electrically-activated valve |
| CN1540301A (en) * | 2003-10-29 | 2004-10-27 | 中国科学院力学研究所 | Device of combined sensor in use for measuring dynamical pressure and static pressure in deep sea |
| CN2881578Y (en) * | 2005-10-18 | 2007-03-21 | 齐旭 | Household sewage gas pressure meter |
| CN101922990A (en) * | 2010-07-13 | 2010-12-22 | 上海大田阀门管道工程有限公司 | Self-operated micropressure controller |
| CN204085775U (en) * | 2014-09-30 | 2015-01-07 | 成都卓微科技有限公司 | The Underwater Pressure sensor of the anti-diaphragm breakage of a kind of diaphragm guide type |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109959366A (en) * | 2019-04-12 | 2019-07-02 | 清华大学 | Depth of water probe, depth of water detection system and elementary errors water-depth measurement method |
| CN109974664A (en) * | 2019-04-28 | 2019-07-05 | 天津理工大学 | Universal level-metre |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141217 |