CN103344379B - Electromechanical integration differential pressure gauge - Google Patents
Electromechanical integration differential pressure gauge Download PDFInfo
- Publication number
- CN103344379B CN103344379B CN201310279546.0A CN201310279546A CN103344379B CN 103344379 B CN103344379 B CN 103344379B CN 201310279546 A CN201310279546 A CN 201310279546A CN 103344379 B CN103344379 B CN 103344379B
- Authority
- CN
- China
- Prior art keywords
- differential pressure
- pressure gauge
- electromechanical integration
- screw axis
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to electromechanical integration differential pressure gauge, comprise housing, sheet spring, measuring diaphragm, gland, main circuit board, communication interface, keystroke interface, looper, planar inductor, U-shaped copper sheet, magnet steel, screw axis, index dial, pointer, watch glasses, lock ring.The superior effect of electromechanical integration differential pressure gauge of the present invention is: described electromechanical integration differential pressure gauge has Mechanical measurement function and electronic type measurement function simultaneously, electronic type is measured and is adopted eddy current principle to detect micro-displacement, make planar inductor on circuit boards, utilize variable area reflective high frequency current vortex technology, realized the accurate measurement of differential pressure by non-contacting mode; Mechanical measurement utilizes magnetic linkage to connect, and measuring diaphragm Sports band moving plate spring moves, and sheet spring drives magnet steel to move again, and magnet steel drives screw axis, and screw axis drives pointer instruction, and described electromechanical integration differential pressure gauge structure is simple, measures accurately.
Description
Technical field
The present invention relates to device for pressure measurement, be specifically related to a kind of electromechanical integration differential pressure gauge of also reporting to the police with pointer instruction and electronical record.
Background technology
Differential pressure gauge is the instrument kind that in tensimeter, a class is special, is applicable to or different medium identical to two kinds of pressure and measures, and the differential pressure value of this two media shown.Differential pressure gauge is generally used for detecting the loss of pressure medium.It has been widely used in the various industries such as industrial and mineral, chemical industry, food, medical treatment, scientific research.In recent years, the market demand of various differential pressure gauge is increasing, has a extensive future.
Single diaphragm differential pressure gauge utilizes diaphragm to pressure-sensitive characteristic, the change of differential pressure pressure is converted into straight linear displacement to carry out the meter unit measured.
In existing single diaphragm differential pressure gauge, upper connector and lower connector composition annular seal space, annular seal space is divided into upper and lower two parts by the diaphragm be arranged in annular seal space, the outer wall of the corrugated tube wherein in upper connector and the inwall of upper connector and diaphragm form low-pressure medium chamber, corrugated tube in lower connector and the inwall of lower connector and diaphragm form high-pressure medium chamber, corrugated tube wherein in upper connector is connected with transmission lever, high-pressure medium passes into high-pressure medium in chamber, low-pressure medium passes into low-pressure medium in chamber, by the effect of the pressure differential of medium, make diaphragm generation deformation, the deformation of diaphragm drives the corrugated tube generation deformation in low-pressure medium chamber, and drive transmission lever displacement, the most at last displacement be delivered to dial plate pointer on and show, finally measure the differential pressure of diaphragm media of both sides.
But, in the course of work of existing single diaphragm differential pressure gauge, differential pressure makes diaphragm produce deformation, during diaphragm deformation, surface is corrugated surface shape, and upper overvoltage protection face on the other side on upper connector gradually, existing upper overvoltage protection face is planar structure, after diaphragm time in running order fits to overvoltage protection face, owing to fitting completely with upper overvoltage protection face in the surface of diaphragm, diaphragm still continues distortion, causes the damage of diaphragm; Simultaneously may connect instead due to misoperation at the operating process mesohigh medium of reality and low-pressure medium; the corrugated surface that there will be diaphragm equally cannot be fitted completely with lower connector lower overvoltage protection face on the other side; the distortion of diaphragm can be caused equally excessive, and then cause the damage of diaphragm.
The excessive deformation of above-mentioned diaphragm causes the damage of diaphragm, shortens the serviceable life of single diaphragm differential pressure gauge.
In addition, above-mentioned upper connector and the link of lower connector are designed to flange plate structure, and realize being tightly connected by O-ring seal between link.Above-mentioned employing O-ring seal seals, and O-ring seal is easy to corrosion or aging and then generation leakage, finally causes the life-span of single diaphragm differential pressure gauge to shorten further.
Mechanical differential pressure gauge is widely used in the differential pressure monitoring of pharmaceuticals industry toilet, and the manufacturing enterprise of medicine will carry out GMP(GoodManufacturingPractice) certification, a wherein very important content is exactly the differential pressure of Yao You toilet, temperature, the record data of humidity and alert data.Traditional mechanical differential pressure gauge only has the function of monitoring differential pressure, does not automatically record the function of differential pressure, manual checking meter can only be relied on to keep a record, can not send warning in time when differential pressure transfinites.
Mostly mechanical differential pressure gauge structure based on rubber diaphragm principle is separated for two pressure chambers (high pressure chest and low pressure chamber) by the diaphragm of a flexible movement, measure using rubber diaphragm and sheet spring as sensitive element, when differential pressure (comprising malleation, negative pressure) acts on diaphragm, diaphragm produces distortion, the position of diaphragm changes, and carries out displacement by high pressure to low pressure.Meanwhile, diaphragm is connected with another mechanical part again, drives it to move, and drives pointer to carry out pressure instruction by physical construction.
If the displacement that mechanical motion can be produced by sensor measurement out, become electric signal, just can form electronic type differential pressure gauge.Such as, the patent No. be 201010602223.7 patent disclose a kind of electronics micro-differential pressure gauge based on eddy current principle, comprise measuring diaphragm, shell, main circuit board, planar inductor etc.If the data recorded can be stored again, add electronic warning function, just can form with pointer instruction and electronical record and the gas micro-differential pressure gauge of reporting to the police.
Therefore, how providing a kind of electromechanical integration differential pressure gauge, is current those skilled in the art's problem demanding prompt solution.
Summary of the invention
In order to overcome defect of the prior art, the object of this invention is to provide a kind of electromechanical integration differential pressure gauge be convenient to pharmaceuticals industry and carried out GMP certification, also report to the police with pointer instruction and electronical record, described electromechanical integration differential pressure gauge can according to the moment record differential pressure value of setting, by data-interface, the data of record are transferred on computer, when pressure limit, warning can be provided in time.Described electromechanical integration differential pressure gauge has mechanical measurement function and electronic surveying function simultaneously, and mechanical measurement adopts screw axis magnetic linkage to connect principle, noncontact, nothing friction, and screw axis drives indicators turn; Electronic surveying adopts eddy current principle, is also noncontact, without friction, measuring accuracy is high, and cost is low.
Electromechanical integration differential pressure gauge of the present invention, comprise housing, sheet spring, measuring diaphragm, gland, main circuit board, communication interface, keystroke interface, looper, film inductor, U-shaped copper sheet, magnet steel, screw axis, index dial, pointer, watch glasses, lock ring, sheet spring and measuring diaphragm are set in described housing, described measuring diaphragm upper end is provided with gland, main circuit board is provided with between described gland and sheet spring, described main circuit board is provided with communication interface and keystroke interface, described main circuit board is connected with looper, described looper is connected with film inductor, described film inductor is located at described U-shaped copper sheet center, and do not contact U-shaped copper sheet, described U-shaped copper sheet is located on described spring, during to ensure described U-shaped copper sheet motion, film inductor can not be touched, the middle part of described spring is connected with described measuring diaphragm, described spring one end is fixing on the housing, the other end is provided with magnet steel, also be provided with screw axis in described housing, above described screw axis, be provided with index dial and pointer successively, described housing arranges watch glasses, and described watch glasses is compressed on the housing to ensure sealing by lock ring.
The range of described pointer is 0 °-81 °.
Further, described measuring diaphragm is circular piece.
Further, described watch glasses is sealed transparent cover.
Further, the junction of described watch glasses and described housing is provided with O-ring seal.
Compared with prior art, the superior effect of electromechanical integration differential pressure gauge of the present invention is: described electromechanical integration differential pressure gauge has Mechanical measurement function and electronic type measurement function simultaneously, electronic type is measured and is adopted eddy current principle to detect micro-displacement, make film inductor on circuit boards, utilize variable area reflective high frequency current vortex technology, realized the accurate measurement of differential pressure by non-contacting mode; Mechanical measurement utilizes magnetic linkage to connect, and measuring diaphragm Sports band moving plate spring moves, and sheet spring drives magnet steel to move again, and magnet steel drives screw axis, and screw axis drives pointer instruction, and described electromechanical integration differential pressure gauge structure is simple, measures accurately.
Accompanying drawing explanation
Fig. 1 is the principal section schematic diagram of electromechanical integration differential pressure gauge of the present invention;
Fig. 2 is the inner structure schematic diagram of electromechanical integration differential pressure gauge of the present invention;
Fig. 3 is the partial schematic diagram that electromechanical integration differential pressure gauge of the present invention removes shell and watch glasses.
Description of reference numerals is as follows:
1-housing, 11-sheet spring, 12-measuring diaphragm, 13-gland, 14-main circuit board, 141-communication interface, 142-keystroke interface, 143-looper, 144-film inductor, 15-U type copper sheet, 16-magnet steel, 17-screw axis, 18-index dial, 19-pointer, 2-watch glasses, 3-lock ring.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.As Figure 1-3, electromechanical integration differential pressure gauge of the present invention, comprises housing 1, sheet spring 11, measuring diaphragm 12, gland 13, main circuit board 14, communication interface 141, keystroke interface 142, looper 143, film inductor 144, U-shaped copper sheet 15, magnet steel 16, screw axis 17, index dial 18, pointer 19, watch glasses 2, lock ring 3, sheet spring 11 and measuring diaphragm 12 are set in described housing 1, described measuring diaphragm 12 upper end is provided with gland 13, main circuit board 14 is provided with between described gland 13 and sheet spring 12, described main circuit board 14 is provided with communication interface 141 and keystroke interface 142, described main circuit board 14 is connected with looper 143, described looper 143 is connected with film inductor 144, described film inductor 144 is located at described U-shaped copper sheet 15 center, and do not contact U-shaped copper sheet 15, described U-shaped copper sheet 15 is located on described spring 11, during to ensure that described U-shaped copper sheet 15 moves, can not touch film inductor 144, the middle part of described spring 11 is connected with described measuring diaphragm 12, described spring 11 one end is fixed on described housing 1, and the other end is provided with magnet steel 16, also be provided with screw axis 17 in described housing 1, above described screw axis 17, be provided with index dial 18 and pointer 19 successively, described housing 1 arranges watch glasses 2, and described watch glasses 2 is pressed on described housing 1 by lock ring 3 to ensure sealing.The range of described pointer 19 is 0 °-81 °.
Described magnet steel 16 and screw axis 17 adopt non-contact design, described magnet steel 16 attracts turning axle 17 to rotate, described measuring diaphragm 12 is circular piece, and described watch glasses 2 is sealed transparent cover, and described watch glasses 2 is provided with O-ring seal (not shown) with the junction of described housing 1.Housing 1 be divide into two cavitys by described measuring diaphragm 12, and right side is high pressure chest, and left side is low pressure chamber, and main circuit board 14 is in high pressure chest, and described watch glasses 12 and lock ring 11 realize the sealing of high pressure chest.
Described measuring diaphragm 12 is under the effect of differential pressure, overcome the acting force of sheet spring 11 to it to move forward and backward, described spring 11 and measuring diaphragm 12 reach balance again in new position, the displacement of described measuring diaphragm 12 can be with moving plate spring 11, described spring 11 drives U-shaped copper sheet 15 to produce displacement, the change in location of described U-shaped copper sheet 15 makes to cover copper sheet area on film inductor 144 and changes, thus the inductance value of film inductor 144 is changed, main circuit board 14 is by detecting the change of inductance value, realize the accurate measurement to differential pressure subtle change, and measurement data record is got off.
Meanwhile, described spring 11 also drives magnet steel 16 to produce displacement, and the displacement of magnet steel 16 makes screw axis 17 rotate, and the pointer 19 that rotarily drives of screw axis 17 deflects, and pointer 19 just indicates force value on index dial 18.
The data of record according to the moment record differential pressure value of setting, can be transferred on computer by data-interface, when pressure limit, can provide warning in time by described electromechanical integration differential pressure gauge.
Electromechanical integration differential pressure gauge of the present invention has mechanical measurement function and electronic surveying function simultaneously, mechanical measurement adopts screw axis 17 magnetic linkage to connect principle, described screw axis 17 adopts cordless design with magnet steel 16, and without friction, screw axis 17 drives pointer 19 to rotate; Electronic surveying adopts eddy current principle, and described film inductor 144 and U-shaped copper sheet 15 adopt cordless design, without friction, measuring accuracy is high, and cost is low.
The present invention is not limited to above-mentioned embodiment, and when not deviating from flesh and blood of the present invention, any distortion that it may occur to persons skilled in the art that, improvement, replacement all fall into scope of the present invention.
Claims (4)
1. electromechanical integration differential pressure gauge, comprise housing, sheet spring, measuring diaphragm, gland, main circuit board, communication interface, keystroke interface, looper, film inductor, U-shaped copper sheet, magnet steel, screw axis, index dial, pointer, watch glasses, lock ring, it is characterized in that, sheet spring and measuring diaphragm are set in described housing, described measuring diaphragm is provided with gland, main circuit board is provided with between described gland and described spring, described main circuit board is provided with communication interface and keystroke interface, described main circuit board is connected with looper, described looper is connected with film inductor, described film inductor is located at described U-shaped copper sheet center, and do not contact U-shaped copper sheet, described U-shaped copper sheet is located on described spring, the middle part of described spring is connected with described measuring diaphragm, described spring one end is fixing on the housing, the other end is provided with magnet steel, also be provided with screw axis in described housing, described screw axis is provided with index dial and pointer successively, described housing arranges watch glasses, and described watch glasses is compressed on the housing by lock ring.
2. electromechanical integration differential pressure gauge according to claim 1, is characterized in that, described measuring diaphragm is circular piece.
3. electromechanical integration differential pressure gauge according to claim 1, is characterized in that, described watch glasses is sealed transparent cover.
4. electromechanical integration differential pressure gauge according to claim 1, is characterized in that, the junction of described watch glasses and described housing is provided with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310279546.0A CN103344379B (en) | 2013-07-04 | 2013-07-04 | Electromechanical integration differential pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310279546.0A CN103344379B (en) | 2013-07-04 | 2013-07-04 | Electromechanical integration differential pressure gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103344379A CN103344379A (en) | 2013-10-09 |
| CN103344379B true CN103344379B (en) | 2016-01-20 |
Family
ID=49279194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310279546.0A Expired - Fee Related CN103344379B (en) | 2013-07-04 | 2013-07-04 | Electromechanical integration differential pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103344379B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0682239A2 (en) * | 1994-05-10 | 1995-11-15 | Fuji Electric Co., Ltd. | Differential pressure detecting apparatus |
| EP1014066A1 (en) * | 1998-12-22 | 2000-06-28 | WIKA ALEXANDER WIEGAND GmbH & CO. | Differential Pressure Gauge |
| CN201126391Y (en) * | 2007-12-14 | 2008-10-01 | 冯懿仙 | Light error pressure table setting with aligning apparatus |
| CN101498611A (en) * | 2009-03-17 | 2009-08-05 | 李岩峰 | Micro-differential pressure gauge |
| CN203414223U (en) * | 2013-07-04 | 2014-01-29 | 北京塞尔瑟斯仪表科技股份有限公司 | Dynamo-electric integrated differential pressure gauge |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059195B1 (en) * | 2004-12-02 | 2006-06-13 | Honeywell International Inc. | Disposable and trimmable wireless pressure sensor for medical applications |
-
2013
- 2013-07-04 CN CN201310279546.0A patent/CN103344379B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0682239A2 (en) * | 1994-05-10 | 1995-11-15 | Fuji Electric Co., Ltd. | Differential pressure detecting apparatus |
| EP1014066A1 (en) * | 1998-12-22 | 2000-06-28 | WIKA ALEXANDER WIEGAND GmbH & CO. | Differential Pressure Gauge |
| CN201126391Y (en) * | 2007-12-14 | 2008-10-01 | 冯懿仙 | Light error pressure table setting with aligning apparatus |
| CN101498611A (en) * | 2009-03-17 | 2009-08-05 | 李岩峰 | Micro-differential pressure gauge |
| CN203414223U (en) * | 2013-07-04 | 2014-01-29 | 北京塞尔瑟斯仪表科技股份有限公司 | Dynamo-electric integrated differential pressure gauge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103344379A (en) | 2013-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102356307B (en) | Capacitive gage pressure sensor with vacuum dielectric | |
| US20080289567A1 (en) | Method and Apparatus for a Gauge for Indicating a Pressure of a Fluid | |
| CN203083623U (en) | Low-power consumption temperature compensation membrane-type gas meter | |
| CN103344379B (en) | Electromechanical integration differential pressure gauge | |
| CN102128701B (en) | Micro-differential voltage gauge based on eddy current displacement measuring technology | |
| CN203414223U (en) | Dynamo-electric integrated differential pressure gauge | |
| CN203551174U (en) | Bourdon-tube pressure gauge | |
| CN103017971A (en) | Gas pressure sensor | |
| KR101483755B1 (en) | An apparatus for measuring gas pressure and temperature in gas pipe | |
| CN102435381A (en) | Liquid-state metallic sodium experiment loop pressure sensor | |
| CN214334129U (en) | Multi-position pressure gauge calibrating device | |
| CN201909694U (en) | Differential pressure gauge based on eddy current displacement measurement technology | |
| CN205679354U (en) | A kind of pressure gauge for fire fighting | |
| CN102954853B (en) | Pressure sensor and pressure sensing circuit thereof | |
| CN202141553U (en) | A sensing element for pressure measuring and a capacitive pressure sensor having the sensing element for pressure measuring | |
| CN201173839Y (en) | Mechanical type differential pressure meter with temperature and humidity directive function | |
| CN201060079Y (en) | Intelligent differential pressure cell | |
| CN211904570U (en) | Industrial process differential pressure sensing device and pressure sensor isolation device | |
| CN202149830U (en) | Slide block type differential pressure gauge | |
| GB2345546A (en) | Hall effect pressure transducer comprising a diaphragm and a connection rod | |
| CN201331410Y (en) | Piston type differential pressure gauge | |
| CN202485857U (en) | Digital display pressure gauge | |
| CN204301910U (en) | Two display pressure transmitter | |
| CN214843489U (en) | Liquid level measuring system | |
| CN207730362U (en) | Bellows-type digital display manometer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: PUFEI (BEIJING) TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING SAILSORS INSTRUMENTS LTD. Effective date: 20150825 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150825 Address after: Room 537-A, 229 Haitai building 100083 North Fourth Ring Road in Beijing city of Haidian District Applicant after: Pfeiffer (Beijing) Technology Co., Ltd. Address before: North Fourth Ring Road 100083 Beijing Haidian District City 229 Haitai building Applicant before: Sailsors Instruments Ltd. Beijing |
|
| 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: 20160120 Termination date: 20170704 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |