CN105444937A - Pressure measuring device - Google Patents
Pressure measuring device Download PDFInfo
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- CN105444937A CN105444937A CN201410446623.1A CN201410446623A CN105444937A CN 105444937 A CN105444937 A CN 105444937A CN 201410446623 A CN201410446623 A CN 201410446623A CN 105444937 A CN105444937 A CN 105444937A
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- measuring sensor
- pressure
- pressure measurement
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Abstract
The invention relates to a pressure measuring device which is provided with a measuring element made of a metal sheet or tube. Considering the durability and usage conditions, the material of the measuring element is composed of an improved alloy; and the pressure measuring device is preferably constructed without an indication member, and is additionally improved in the aspects of alternating load or pressure impact during continuous usage through structural improvement.
Description
Technical field
The present invention relates to a kind of device for pressure measurement with the measuring sensor be made up of sheet metal or pipe, wherein, the material of measuring sensor is improved in durability and service condition, and wherein, device for pressure measurement is preferably built into does not have indication piece, and is improved in improving extraly in lasting use alternate load by structure.
Background technology
From tonometric invention, by the elastic tube 1845 of Shi Nici (Schniz) Mr. from Coblentz, and by Eugene boolean step on 1848 disclosure text US9163 known, multi-form pressure gauge can mate its application target, or can simplify at low cost, or can be improved in service condition especially in lasting use.At this, use by multi-form aldary equally, as the pipe that ferroalloy is made, such as stainless-steel tube, wherein, for use, durability is by quenching or optimised in life-span and other characteristics by self-enhancement.
In addition known, ferroalloy, the steel of different-alloy can mate different application targets.Therefore, such as document US3,975,967 disclose a kind of chromium-molybdenum alloy with other alloy additive for measuring tube, and it is optimised by the chlorinity improved in environment use.In addition, realized by the aldary with beryllium composition, wherein, although this alloy improves the spring performance of material substantially, but beryllium alloy is poisonous, uses restricted.Also known, can in use may vibrate or overvoltage aspect to pressure gauge optimization: in vibration, indication piece or axle damping ground are supported, or pressure gauge is filled with glycerine; Such as, in unexpected overvoltage or in the less desirable gas leakage of opposing under damaged condition, pressure gauge is provided with slot in the channel, is provided with the throttling valve of press-in, with the parts in the cross section diminished, or is made up of agglomerated material.
Summary of the invention
The object of the invention is to, realize a kind of lower cost solution for improvement of the manometric serviceable life in Special use, and the elasticity realized especially in the alternate load situation of alternating bending continues use improvement measuring tube simultaneously.This object is by as structure described in the independent claim realization.
The present invention is based on so a kind of scheme (Ansatz), namely favourable structure should be realized, wherein, preferably resisted compressive load, vibration and being modified at low cost without the device for pressure measurement of mechanism, and wherein, measuring tube is optimised in lasting use in its alloy, and be implemented as without beryllium and chromium at this.
In addition, according to the present invention, device for pressure measurement has: by having the measuring sensor made based on the improvement alloy of iron that cobalt that percent by weight is 10-50 and percent by weight are the nickel of 10-35, wherein, measuring sensor can be film, but preferably becomes tubular by the control of weld metal sheet or seamless drawing.But preferably, for this measuring sensor, use the ferroalloy with cobalt that percent by weight is 16-19 and the nickel that percent by weight is 27-29.At this particularly preferably, this alloy does not have other additives of such as aluminium or titanium.Other additives are up to maximum 1% or 2% in proportion in the alloy, thus are using and optimizing accurate adjustment in lasting alternating bending load.Other are optimized by producing the thermal treatment of material.Therefore, yield limit and tensile strength bring up to 1650-1850Mpa by thermal treatment or quenching (such as precipitating quenching) from 1100-1200Mpa.At this, hardness becomes 470-490HV from roughly 320-340HV.When improving serviceability temperature at the same time, the material value of improvement also allows the lasting use under the condition of 300-500bar: therefore this material also allows to use under the condition of 200-250 DEG C, and can not reduce durability with measuring.In addition, measurement mechanism meets RoHS standard by this combination of materials, that is, be without beryllium and chromium, but work in-process also has good flexural property.
Measuring tube is such as applied in alternating pressure, and moves back and forth according to institute's applied pressure at this.
Especially, such measuring tube is also implemented as has elliptic cross-section, and couples with measuring piece, and this measuring piece drives pointer.But preferably, pressure gauge is embodied as without mechanism.At this, when measuring tube be arranged on vibrate on place to use in pressure gauge time, additionally increase the weight of the difficulty of each requirement.At this, multiple impact is overlapped mutually.On the one hand, deformation power acts on tube section, because oval pipe deformation and be approximately round section by the deformation in applying when pressure; On the other hand, when interior pressure changes, repeat pulling force stress, alterante stress and repetition pressure stresses and act on measuring tube, described stress is also additionally superposed by the vibration of application.
For the measuring sensor according to process of the present invention based on Fe-Co-Ni, find to significantly improve creep rupture strength, additional improvement is for the load of maximum amplitude.
Another structural improvement is realized by following manner, that is, pressure gauge is implemented as without mechanism, and by means of different geometries with by the coupling to the number of turns, realizes and the mating of pressure span and indicating area.At this, round tube just becomes flattening or elliptical shape by being wound around, and it is executing the diameter change affecting cross section or measuring piece in stressed situation, and affects the change of pointer relative to index dial of installation thus.Realized by following manner crossing the compressive resistance under load condition, that is, the free end of measuring tube on pressure connectors deformation limitedly by compressing, to weigh wounded.Under damage or packing less situation, remaining gap prevents the excessive pressure loss.Especially, end block is also closed by the weldability utilization welding of material Fe-Co-Ni, thereby eliminating shutting down such as by stress corrosion.
Another structural improvement is realized by following manner, that is, be relevant to temperature and use, index dial is made of aluminum, and has the flange of the raising to pressure connectors downwards.Especially, this flange relative to the pointer of the scale guided placement stamped, and has plane by its diameter, and this face allows under vibrating conditions better, the support of the larger enforcement of plane.
Embodiment
Fig. 1 illustrates for the cross section of the device for pressure measurement of the pressure gauge embodiment without mechanism.
Pressure gauge is made up of contiguous block 1, measuring sensor 2 pressure seal ground, be preferably fixed in this contiguous block by means of soft solder or hard solder 3.At this, measuring sensor has region 2.1, and it is spiral, and when applying pressure by the expansion of pressure connectors 1.2 influence elastane, rotation.Pointer 4 by this expansion, rotation and reversing relative to index dial 5, wherein, this pointer be also embodied as the parts of measuring sensor, measuring sensor by the protuberance continuing to extend.
Especially, the region 2.1 of measuring sensor is the measured zone as territory, area under control, its by bending and have leveling, egg type circle or elliptical shape, and connect region in the region of 3 in pressure seal preferably circular.
It is also envisaged that measuring sensor be only implemented as film-shaped or C shape, or the indicating on index dial with moving through indication piece conversion of measuring sensor.In addition, pressure gauge has housing 6, is preferably implemented as round sheet metal bend, and it holds index dial 5 and view window 7.But measuring sensor also accessible site is arranged in valve body, wherein, housing is formed as a part for valve cell.Especially, view window is fixed by following manner, that is, the edge 6.1 of housing 6 is press-fit into view window, and annular plastic is deformation limitedly.Preferably, index dial is made up of plastics or aluminium, and has flange 5.1, and a part for measuring sensor 2.1 or axis are axially guided to housing or index dial by it.In order to safety and for damage or packing less situation, the pipe of measuring sensor is drawn from this pressure connectors in the region of pressure connectors, and weigh wounded limitedly, deformation.Occur gap 2.3 at this, its situation for the pressure loss represents limited pressure throttling valve, prevents not controlled gas loss.
Fig. 2 illustrates the detail view of three other embodiments of measuring sensor.
Type A illustrates " bishop's staff of authority " shape of measuring sensor, wherein, and fixed pointers on the inner closed of measuring sensor.At this, this end can soldered or bending, and hard solder can be utilized to close.
Type B illustrates the spirality of measuring sensor, wherein, spiral several according to service condition preferably 5 and 13 circle between.This pipe preferably has the diameter of 0.8 to 1.5mm in join domain, but is preferably 1.0mm.
Type C illustrates the spirality of measuring sensor.This pipe preferably has the diameter of 1 to 2.5mm in join domain, but is preferably 1.5mm.
Claims (12)
1. continue the device for pressure measurement used, it is characterized in that, this device for pressure measurement has: pressure connectors, measuring sensor, index dial; And wherein, measuring sensor is made up of the ferroalloy with nickel composition and cobalt composition.
2. device for pressure measurement according to claim 1, is characterized in that, this measuring sensor is formed as tubular.
3. device for pressure measurement according to claim 1 and 2, is characterized in that, tubular measuring sensor be deformed on cross section in measured zone flat, egg circular or oval, and the shape of index dial, or repeatedly spiral.
4. according to device for pressure measurement in any one of the preceding claims wherein, it is characterized in that, in pressure connectors region, install throttling valve, it is preferably formed to the shape of the leveling of the measuring sensor implemented by pressure connectors.
5. the device for pressure measurement according to claim 1 or 4, it is characterized in that, measuring sensor is made up of the alloy based on iron of the nickel of the cobalt and 10-35 % by weight with 10-50 % by weight, is preferably made up of the ferroalloy of the nickel of the cobalt and 27-29 % by weight with 16-19 % by weight.
6. device for pressure measurement according to any one of claim 1 to 4, is characterized in that, tubular measuring sensor is at one end closed and welded especially, and the pressure connectors of thread-shaped is set at the other end, or wherein, measuring sensor pipe has 0.8-2.8mm, the preferably diameter of 1.0 to 1.5mm.
7. according to device for pressure measurement in any one of the preceding claims wherein, it is characterized in that, this device is implemented as the indication piece not having and the amplitude of measuring sensor is converted to scale, but be directly connected with measuring sensor by pointer, and on scale, indicate the pressure be applied on pressure connectors, pressure change.
8. the device for pressure measurement according to any one of claim 6 to 7, it is characterized in that, bending tubular measurement element has yield limit between 1100-1200Mpa and tensile strength under the hardness of 320-340HV, and has the hardness of 470-490HV after quenching when yield limit and tensile strength are between 1650 and 1900MPa.
9. according to device for pressure measurement in any one of the preceding claims wherein, it is characterized in that, pointer is directly fixed on the end of measuring sensor, or measuring sensor freely, blind end self forms pointer, or measuring sensor or needle pivot are diametrically being supported by the breach of flange-shape or are being placed on index dial.
10. according to device for pressure measurement in any one of the preceding claims wherein, it is characterized in that, measuring sensor is only made up of iron, nickel and cobalt element, or preferably, other alloying components are less than 2% or 1%.
11. 1 kinds of device for pressure measurement, is characterized in that, comprising: housing; Pressure connectors; Indication piece, this indication piece is made up of pointer and index dial; Flexible tubular measurement element, it is connected with pressure connectors pressure seal ground, and be characterised in that, elastic tube is made up of fernico, the pipe end closed directly arranges pointer, and elastic tube is repeatedly wound around.
12. device for pressure measurement according to claim 11, is characterized in that, elasticity measurement element is made up of the ferroalloy of the nickel of the cobalt and 27-29 % by weight with 16-19 % by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446623.1A CN105444937A (en) | 2014-09-03 | 2014-09-03 | Pressure measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410446623.1A CN105444937A (en) | 2014-09-03 | 2014-09-03 | Pressure measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105444937A true CN105444937A (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410446623.1A Pending CN105444937A (en) | 2014-09-03 | 2014-09-03 | Pressure measuring device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050178208A1 (en) * | 2004-02-09 | 2005-08-18 | Hubert Benzel | Pressure sensor having a silicon chip on a steel diaphragm |
| CN1715854A (en) * | 2004-06-29 | 2006-01-04 | 株式会社电装 | Pressure sensor |
| US20100281994A1 (en) * | 2009-05-11 | 2010-11-11 | Honeywell International Inc. | Pressure sensing device for harsh environments |
| CN202869729U (en) * | 2012-10-31 | 2013-04-10 | 北京布莱迪仪器仪表有限公司 | Spiral spring tube pressure measuring component |
| CN203275009U (en) * | 2013-06-24 | 2013-11-06 | 金坛市嘉灵仪表有限公司 | Wide-range double-face indication cylinder valve pressure detector |
-
2014
- 2014-09-03 CN CN201410446623.1A patent/CN105444937A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050178208A1 (en) * | 2004-02-09 | 2005-08-18 | Hubert Benzel | Pressure sensor having a silicon chip on a steel diaphragm |
| CN1715854A (en) * | 2004-06-29 | 2006-01-04 | 株式会社电装 | Pressure sensor |
| US20100281994A1 (en) * | 2009-05-11 | 2010-11-11 | Honeywell International Inc. | Pressure sensing device for harsh environments |
| CN202869729U (en) * | 2012-10-31 | 2013-04-10 | 北京布莱迪仪器仪表有限公司 | Spiral spring tube pressure measuring component |
| CN203275009U (en) * | 2013-06-24 | 2013-11-06 | 金坛市嘉灵仪表有限公司 | Wide-range double-face indication cylinder valve pressure detector |
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Application publication date: 20160330 |