CN107036755A - A kind of pressure amplifier suitable for pressure measuring system - Google Patents
A kind of pressure amplifier suitable for pressure measuring system Download PDFInfo
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- CN107036755A CN107036755A CN201611024730.0A CN201611024730A CN107036755A CN 107036755 A CN107036755 A CN 107036755A CN 201611024730 A CN201611024730 A CN 201611024730A CN 107036755 A CN107036755 A CN 107036755A
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- pressure
- room
- elastic membrane
- concora crush
- transmission rod
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
- G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
- G01L13/025—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms
- G01L13/026—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms involving double diaphragm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of pressure amplifier suitable for pressure measuring system, amplify room including concora crush room, pressure measuring chamber, pressure transmitter and pressure, non-conductive medium is filled with concora crush room, transmission rod is provided with concora crush room, transmission rod both ends area of section is different and the movable pressure measuring chamber, pressure amplification follow-up renew in room of running through is stretched respectively, the first elastic membrane and the second elastic membrane are equipped with transmission rod two ends, pressure measuring chamber and pressure are amplified room and completely cut off with concora crush room by the first elastic membrane and the second elastic membrane, and the second elastic membrane is located on the end face of power transmission boom end；The slide plate matched with hot-wire coil is installed in locating rod one end, the locating rod other end stretches out after running through concora crush room.The pressure of tested point is mechanically amplified, and the requirement of manufacture sensitivity, precision and the range of corresponding pressure transmitter is greatly lowered, and whole system is rational in infrastructure, easy to operate, and signal is accurate and is easy to read.
Description
Technical field
The present invention relates to a kind of measurement apparatus, and in particular to a kind of pressure amplifier suitable for pressure measuring system.
Background technology
In engineering and scientific research project, low phase the pressure of pressure system is accurately measured and high-pressure system low voltage difference it is accurate
Measurement is always a technological difficulties.In engineering, low phase is to the measurement of pressure system pressure and the survey of high-pressure system low voltage difference
Amount is often the important indicator of supervisory control system running state, is the necessary condition for ensureing system operation safety.In scientific research project,
Low phase is to determine to the important parameter that the measurement of pressure system pressure and the measurement of high-pressure system low voltage difference are often testing inspection
The important indicator whether tested successfully.In practical situations both, the domestic differential pressure for differential pressure in below 100Pa high-pressure system is surveyed
There is the difficulty of calibration technique ability in the demarcation of quantity sensor, calibrating cost is high, causes the increase of project cost.Due to domestic nothing
Method is normally demarcated, while the validity of certificate can not be demarcated outside authentication state, so that it cannot prove relevant pressure transmitter
The validity of below 100Pa measurement data.
There are multiple technologies on the amplification of pressure measuring system pressure.For example patent of invention GB19660039746 19660906 is provided
A kind of low pressure measurement device, the device includes bellows, spring, drive link.Pressure measurement side pressure is small by bellows top
Ball extruding drive link one end, drive link and bellows contact point on the same axis, pass through regulation not with bellows top bead
Nut reaches the amplification of pressure at bellows.The device utilizes lever principle so that measurement side pressure is amplified by force, because nut is living
Moving part, so under drive link vibration condition, the measurement strong magnification ratio of side pressure can be changed.Therefore the system is not suitable for for a long time
High-precision pressure measurement.
And for example patent 200910000717.5 provides a kind of differential pressure pick-up.The device is former using spring-tube manometer
Reason, the device includes the composition such as package casing, the first and second sensing elements (spring-tube type), amplifier module.The device possesses
The effect of amplification, its amplify flow be：Deformation quantity is different between sensing element, causes long connecting rod to promote gear train, completes motion
Amplification.This enlarging function is to coordinate principle using gear, improves the sensitivity for showing result, and it is strong to complete measurement side pressure
Amplification, realize the reduction of same pressure measuring instruments measurement lower limit.
The content of the invention
Present invention aims at provide a kind of pressure amplifier suitable for pressure measuring system, it is ensured that measurement apparatus can either be
Used under high temperature, ensure system sealing, and pressure multiplication factor can be adjusted according to the actual requirements.
The present invention is achieved through the following technical solutions：
A kind of pressure amplifier suitable for pressure measuring system, including concora crush room, the pressure measuring chamber through concora crush room one end, pressure
Transmitter and the pressure amplification room through the concora crush room other end, the pressure amplification room is connected with pressure transmitter, described
It is filled with concora crush room in non-conductive medium, the concora crush room and is provided with transmission rod, transmission rod both ends area of section is different and divides
Activity is not stretched through pressure measuring chamber, pressure amplification follow-up renew in room, and the first elastic membrane and the second elasticity are equipped with transmission rod two ends
Pressure measuring chamber and pressure are amplified room and completely cut off with concora crush room by film, the first elastic membrane and the second elastic membrane, and the second elastic membrane is located at
On the end face of power transmission boom end；Also include locating rod and the hot-wire coil being arranged in the middle part of transmission rod, in locating rod one end peace
Equipped with the slide plate matched with hot-wire coil, the locating rod other end stretches out after running through concora crush room, and is provided with locating rod
The cable electrically connected with slide plate.For pressure measurer of the prior art can not the measurement data below 100 handkerchiefs standard
True property, inventor is equally treated pressure measurement by the way of mechan-amplifier and measured by force, and wherein pressure enlarger includes power transmission
Bar, pressure measuring chamber, pressure amplification room and concora crush room, concora crush room is connected by pipe with welding system pressure measurement point, to ensure concora crush
Room is in high pressure conditions all the time, and the cross-sectional area of two ends of transmission rod runs through in certain proportion, and two end difference activities
Pressure measuring chamber, pressure amplification room, and it is indoor in pressure measuring chamber and pressure amplification, in the end face and transmission rod and pressure measuring chamber of transmission rod
Or the contact portion of pressure amplification room is respectively equipped with the first elastic membrane and the second elastic membrane, first elastic membrane and the second elasticity
Film be used for realize pressure measuring chamber or pressure amplification room and concora crush room between physical isolation, with avoid pressure measuring chamber, concora crush room and
Produce and influence each other between pressure amplification room three, similarly, the hyperbaric environment of connected system pressure formation can in concora crush room
Ensure the first elastic membrane will not excessively deformation and be damaged；And live wire is installed on the transmission rod in concora crush room
Circle, slide plate and the hot-wire coil of locating rod lower end coordinate, and the upper end of locating rod stretches out through concora crush room, and the one of hot-wire coil
End is connected the two poles of the earth of power supply with the cable in locating rod respectively；
During measurement, measurement medium is entered in pressure measuring chamber by pipeline, and reference media enters to pressure by pipeline and amplified
Interior, because the cross-sectional area of two end faces of transmission rod is different, transmission rod can produce the displacement in horizontal direction, when transmission rod
Motor rest and when being stably maintained, with hot-wire coil relative displacement occurs for slide plate, and detection signal in bar position passes through outside ammeter
Detection, moving displacement Δ l=R/ the Δ R, wherein R that transmission rod can be calculated according to Ohm's law formula R=U/I represents energization
The resistance of coil, Δ R represents the resistance of resistance per unit length coil；And the first elastic membrane and the second elastic membrane are to transmission rod
Longitudinal force is F, meets F=k Δ l, wherein k is the Experimental Calibration coefficient of elastic membrane, now in the survey of existing pressure difference transmitter
On the basis of accuracy of measurement, expand the measurement lower limit of pressure transmitter, and the calculation formula of the pressure at measured point is：Ps=(PlSl
+F)/Ss, wherein, PsThe pressure at measured point is represented, is also the pressure in pressure measuring chamber, PlThe indoor pressure of pressure amplification is represented,
SlRepresent the face area of the indoor transmission rod of pressure amplification, SsRepresent the face area of transmission rod in pressure measuring chamber.Tested point pressure
Multiplication factor is PlWith PsRatio, the pressure of tested point is mechanically amplified, and corresponding pressure is greatly lowered
The requirement for manufacturing sensitivity, precision and range of transmitter, whole system is rational in infrastructure, easy to operate, and signal is accurate and easy
In reading.
Further, the medium of the Filled Dielectrics in concora crush room is non-conductive medium, by elastic membrane to sealing so that should
Medium can not circulate in each chamber, to ensure that it is fixed that the scale dimension of pressure amplification keeps steady；And in concora crush room, surveyed by resistance
Amount mode can realize the accurate measurement of transmission rod displacement, due to the first elastic membrane and the second elastic membrane using phase same material with
Size, and modulus of elasticity is not, it is known that transmission rod is contacted with chamber wall, not by chamber wall friction effects, it is possible to count
All stress on transmission rod are calculated, the accurate calculating of actual differential pressure can be achieved by calculating.
Also include differential pressure and interlock valve group, the differential pressure interlocking valve group includes magnetic valve YV1, magnetic valve YV2 and magnetic valve
YV3, magnetic valve YV1 is connected by pipeline with pressure measuring chamber, and magnetic valve YV3 amplifies room by pipeline and pressure and connected, and magnetic valve
YV2 is arranged between magnetic valve YV1 and magnetic valve YV3.Magnetic valve YV1 connects measurement pressure, and magnetic valve YV3 connects base pressure, work
When making, measurement pressure is judged through magnetic valve YV1, if measurement pressure needs not move through pressure amplification, magnetic valve YV1 is closed
Close, then measure pressure and directly measured by corresponding transmitter；It is not suitable for corresponding transmitter when measuring point pressure values are too low and surveys
During amount, magnetic valve YV1 and magnetic valve YV2 is opened, and after testing medium is connected with pressure measuring chamber, the pressure of testing medium passes through transmission rod
It is delivered to pressure amplification indoor, because the face area at transmission rod two ends is different, pressure to be measured occurs machinery and put in the process
Greatly, the pressure after amplification can immediately arrive at the pressure value after amplification in cut-in pressure transmitter, then.
The transmission rod includes the body of rod and two extensions, and two extensions connect with body of rod two ends screw thread respectively
Connect, an extension is placed in the pressure measuring chamber and the second elastic membrane is arranged on the extension end face, and the first elastic membrane is fixed
On the body of rod, and the first elastic membrane outer circumferential edges are fixed on the side wall of pressure measuring chamber；Another extension is placed in the pressure
Amplification is indoor and the second elastic membrane is arranged on the extension end face, and the first elastic membrane is fixed on the body of rod, and the first elastic membrane
Outer circumferential edges are fixed on the side wall of pressure amplification room.Transmission rod includes three parts, and wherein hot-wire coil is fixed in the body of rod
Portion, and two extensions are respectively placed in pressure measuring chamber, pressure amplification interior, and the first elastic membrane and the second elastic membrane by two extensions
Section amplifies room physical isolation with pressure measuring chamber or pressure respectively, and can change two elongated ends at any time, i.e., according to actual needs
Change the lifting surface area at transmission rod two ends, realize the adjustability of measurement device lower limit.
The non-conductive medium is one kind in ethylene glycol, deionized water or silicone oil.Preferably, from ethylene glycol, going
A kind of non-conductive medium as in concora crush room in ionized water or silicone oil so that the phase interworking between hot-wire coil and slide plate
Close unaffected, and the source of above-mentioned material is wide, and use cost is relatively low.
The present invention compared with prior art, has the following advantages and advantages：
1st, the present invention utilizes concora crush room parcel transmission rod, it is ensured that under high-pressure situations, elastic membrane two sides stress does not surpass
Design load, while containing leaking medium Yi Dan destroyed as elastic membrane, it is ensured that the stabilization of device and the reliability of installation system；
2nd, the present invention interlocks the flow direction that valve group controls testing medium by pressure difference, realizes that range can be carried out according to actual needs
Change, to ensure measurement accuracy；
3rd, the present invention can also realize that corresponding transmitter is surveyed according to actual needs, by changing transmission rod two ends lifting surface area
Measure the adjustability of lower limit；
4th, sealed in the present invention between each chamber using elastic membrane, it is to avoid the medium in each chamber mutually circulates, with
Ensure the constant rate of pressure amplification to be measured；
5th, the present invention realizes that transmission rod displacement can accurately measure by resistance measurement mode, because elastic membrane springform
Amount is not, it is known that transmission rod is contacted with chamber wall, not by chamber wall friction effects, it is possible to calculate institute on transmission rod
There is stress, the accurate calculating of actual differential pressure can be achieved by calculating；
6th, pressure of the present invention is mechanically amplified, and significantly reduces manufacture sensitivity, the essence of corresponding transmitter
Degree and range requirement；Easy to operate and whole system is rational in infrastructure, signal is accurate and is easy to read.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is structural representation of the invention；
The structural representation of Fig. 2 pressure enlargers.
Mark and corresponding parts title in accompanying drawing：
1- pressure measuring chambers, 2- transmission rods, 3- concora crush room, 4- locating rods, 5- pressure amplification room, 6- base pressures, 7- measurement pressures
By force, 8- system pressures, 9- differential pressures interlocking valve group, 10- pressure transmitters, 11- bars position measurement signal, 12- hot-wire coils, 13- are slided
Piece, the elastic membranes of 14- first, the elastic membranes of 15- second.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment and its explanation of the invention is only used for explaining the present invention, does not make
For limitation of the invention.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment includes concora crush room 3, pressure measuring chamber 1, pressure inverting through the one end of concora crush room 3
Device 10 and the pressure amplification room 5 through the other end of concora crush room 3, the pressure amplification room 5 is connected with pressure transmitter 10, in institute
State to be filled with non-conductive medium, the concora crush room 3 in concora crush room 3 and be provided with transmission rod 2, the both ends area of section of transmission rod 2 is not
With and respectively activity through pressure measuring chamber 1, pressure amplification follow-up renew in room 5 stretch, be equipped with the first elastic membrane 14 at the two ends of transmission rod 2
With the second elastic membrane 15, the first elastic membrane 14 and the second elastic membrane 15 by pressure measuring chamber 1 and pressure amplify room 5 and concora crush room 3 every
Absolutely, and the second elastic membrane 15 be located at the end of transmission rod 2 end face on；Also include locating rod 4 and be arranged on the middle part of transmission rod 2
Hot-wire coil 12, the slide plate 13 matched with hot-wire coil 12 is provided with the one end of locating rod 4, the other end of locating rod 4 is through flat
Stretch out after pressure chamber 3, and provided with the cable electrically connected with slide plate 13 in locating rod 4.Surveyed for pressure of the prior art
Measure device can not the measurement data below 100 handkerchiefs accuracy, inventor equally treats pressure measurement by the way of mechan-amplifier
Measure by force, wherein pressure enlarger includes transmission rod 2, pressure measuring chamber 1, pressure amplification room 5 and concora crush room 3, concora crush room 3
Connected by pipe with welding system pressure measurement point, to ensure that concora crush room 3 is in high pressure conditions all the time, 2 two ends of transmission rod
Cross-sectional area is in certain proportion, and two ends respectively activity through pressure measuring chamber 1, pressure amplification room 5, and in pressure measuring chamber 1 and
In pressure amplification room 5, in end face and transmission rod 2 and pressure measuring chamber 1 or the contact portion point of pressure amplification room 5 of transmission rod 2
Not She You the first elastic membrane 14 and the second elastic membrane 15, the elastic membrane 15 of the first elastic membrane 14 and second be used for realize pressure measuring chamber 1
Or the physical isolation between pressure amplification room 5 and concora crush room 3, to avoid pressure measuring chamber 1, concora crush room 3 and pressure amplification room 5 three
Produce and influence each other between person, similarly, ensure that the by the hyperbaric environment of the formation of connected system pressure 8 in concora crush room 3
One elastic membrane 14 will not excessively deformation and be damaged；And hot-wire coil is installed on the transmission rod 2 in concora crush room 3
12, slide plate 13 and the hot-wire coil 12 of the lower end of locating rod 4 coordinate, and the upper end of locating rod 4 stretches out through concora crush room 3, are powered
One end of coil 12 is connected the two poles of the earth of power supply with the cable in locating rod 4 respectively；
During measurement, measurement medium is entered in pressure measuring chamber 1 by pipeline, and reference media enters to pressure by pipeline and amplified
Interior, because the cross-sectional area of 2 two end faces of transmission rod is different, transmission rod 2 can produce the displacement in horizontal direction, work as transmission rod
2 motor rest and when being stably maintained, with hot-wire coil 12 relative displacement occurs for slide plate 13, and bar position measurement signal 11 passes through line
Cable can calculate the moving displacement Δ l=of transmission rod 2 by the detection by outside ammeter according to Ohm's law formula R=U/I
R/ Δ R, wherein R represent the resistance of hot-wire coil 12, and Δ R represents the resistance of resistance per unit length coil；And the first elastic membrane
14 and second elastic membrane 15 to the longitudinal force of transmission rod 2 be F, meet F=k Δ l, wherein k is the Experimental Calibration coefficient of elastic membrane,
Now on the basis of the measurement accuracy of existing pressure difference transmitter, expand the measurement lower limit of pressure transmitter 10, and measured point
The calculation formula of the pressure at place is：Ps=(PlSl+F)/Ss, wherein, PsThe pressure at measured point is represented, is also in pressure measuring chamber 1
Pressure, PlRepresent the indoor pressure of pressure amplification, SlRepresent the face area of the indoor transmission rod 2 of pressure amplification, SsRepresent pressure measuring chamber
The face area of transmission rod 2 in 1.The multiplication factor of tested point pressure is PlWith PsRatio, the pressure of tested point passes through machinery
Mode is amplified, and the requirement of manufacture sensitivity, precision and the range of corresponding pressure transmitter 10 is greatly lowered, entirely
System architecture is rationally, easy to operate, and signal is accurate and is easy to read.
Further, the medium of the Filled Dielectrics in concora crush room 3 is non-conductive medium, by elastic membrane to sealing so that
The medium can not circulate in each chamber, to ensure that it is fixed that the scale dimension of pressure amplification keeps steady；And in concora crush room 3, pass through electricity
Resistance metering system can realize the accurate measurement of the displacement of transmission rod 2, because the first elastic membrane 14 is used with the second elastic membrane 15
Phase same material and size, and modulus of elasticity is not, it is known that transmission rod 2 is contacted with chamber wall, not by chamber wall friction effects,
So all stress on transmission rod 2 can be calculated, the accurate calculating of actual differential pressure can be achieved by calculating.
Embodiment 2
As shown in figure 1, the present embodiment, which also includes differential pressure, interlocks valve group 9, differential pressure interlocking valve group 9 include magnetic valve YV1,
Magnetic valve YV2 and magnetic valve YV3, magnetic valve YV1 are connected by pipeline with pressure measuring chamber 1, and magnetic valve YV3 passes through pipeline and pressure
Amplification room 5 is connected, and magnetic valve YV2 is arranged between magnetic valve YV1 and magnetic valve YV3.Magnetic valve YV1 connects measurement pressure 7, electricity
Magnet valve YV3 connects base pressure 6, during work, and measurement pressure 7 is judged through magnetic valve YV1, need not be through if measuring pressure 7
Pressure amplification is crossed, magnetic valve YV1 is closed, then measure pressure 7 and directly measured by corresponding transmitter；When measuring point pressure values it is too low and
When not being suitable for the measurement of corresponding transmitter, magnetic valve YV3 is closed, and magnetic valve YV1 and magnetic valve YV2 is opened, testing medium with
After pressure measuring chamber 1 is connected, the pressure of testing medium is delivered to pressure by transmission rod 2 and amplified in room 5, because the two ends of transmission rod 2
Face area is different, and mechan-amplifier occurs in the process for pressure to be measured, the pressure after amplification in cut-in pressure transmitter 10,
The pressure value after amplification can then be immediately arrived at.
In transmission rod zero point correction, magnetic valve YV1, YV3 close, open magnetic valve YV2, and then pressure amplification room 5 with
Pressure measuring chamber 1 is connected so that transmission rod indicating positions is zero point.Wherein, base pressure 6 is equal to system pressure 8.
In the present embodiment, the transmission rod 2 include the body of rod and two extensions, two extensions respectively with the body of rod
Two ends are threadedly coupled, and an extension is placed in the pressure measuring chamber 1 and the second elastic membrane 15 is arranged on the extension end face, the
One elastic membrane 14 is fixed on the body of rod, and the outer circumferential edges of the first elastic membrane 14 are fixed on the side wall of pressure measuring chamber 1；Another prolongs
Stretch that section is placed in pressure amplification room 5 and the second elastic membrane 15 is arranged on the extension end face, the first elastic membrane 14 is fixed
On the body of rod, and the outer circumferential edges of the first elastic membrane 14 are fixed on the side wall of pressure amplification room 5.Transmission rod 2 includes three parts,
Wherein hot-wire coil 12 is fixed in the middle part of the body of rod, and two extensions are respectively placed in pressure measuring chamber 1, pressure and amplified in room 5, and first
The physical isolation of room 5 is amplified in two extensions by the elastic membrane 15 of elastic membrane 14 and second with pressure measuring chamber 1 or pressure respectively, and can
According to actual needs, two elongated ends are changed at any time, that is, are changed the lifting surface area at the two ends of transmission rod 2, realized measurement device lower limit
Adjustability.
Preferably, from a kind of non-conductive medium as in concora crush room 3 in ethylene glycol, deionized water or silicone oil,
So that the mutual cooperation between hot-wire coil 12 and slide plate 13 is unaffected, and the source of above-mentioned material is wide, and use cost
It is relatively low.
Embodiment 3
As shown in figure 1, the present embodiment is the concrete application in differential pressure measurement.
On the basis of existing pressure transmitter 10, pressure difference transmitter Surveying Actual Precision is not expanded, pressure difference pick-up is improved
The measurement lower limit of device.Measurement pressure difference calculation formula be：
Wherein：
Δ p represents actual pressure differential；
p1Represent low pressure chamber pressure in pressure transmitter 10；
plRepresent that differential pressure amplifier high pressure intraventricular pressure is strong, while directly being measured by pressure transmitter 10；
slRepresent the face area of differential pressure amplifier inner high voltage room transmission rod 2；
ssRepresent the face area of low-pressure chamber transmission rod 2 in differential pressure amplifier；
F represents the synthesis to the longitudinal force of transmission rod 2 of elastic membrane, and it is directly proportional to the displacement L of transmission rod 2, calculation formula
It is F=k Δs L by Experimental Calibration coefficient k；
ΔpceRepresent the measured value of differential pressure transmitter.
In summary, by changing the face area at the two ends of transmission rod 2, i.e., using different slWith ssNumerical value, then can
Improve the differential pressure measurement lower limit of differential pressure transmitter.
Above-described embodiment, has been carried out further to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. all should be included
Within protection scope of the present invention.
Claims (4)
1. a kind of pressure amplifier suitable for pressure measuring system, including concora crush room (3), the pressure measuring chamber through concora crush room (3) one end
(1), pressure transmitter (10) and the pressure through concora crush room (3) other end amplify room (5), pressure amplification room (5) with
Pressure transmitter (10) is connected, it is characterised in that：Non-conductive medium, the concora crush room (3) are filled with the concora crush room (3)
Interior to be provided with transmission rod (2), transmission rod (2) both ends area of section is different and movable through pressure measuring chamber (1), pressure amplification room respectively
(5) follow-up renew is stretched, and the first elastic membrane (14) and the second elastic membrane (15), the first elastic membrane are equipped with transmission rod (2) two ends
(14) pressure measuring chamber (1) and pressure amplification room (5) are completely cut off with concora crush room (3) with the second elastic membrane (15), and the second elastic membrane
(15) on the end face of transmission rod (2) end；Also include locating rod (4) and the live wire being arranged in the middle part of transmission rod (2)
Enclose (12), the slide plate (13) matched with hot-wire coil (12) is installed in locating rod (4) one end, locating rod (4) other end is passed through
Stretch out after wearing concora crush room (3), and provided with the cable electrically connected with slide plate (13) in locating rod (4).
2. a kind of pressure amplifier suitable for pressure measuring system according to claim 1, it is characterised in that：Also include differential pressure
Valve group (9) is interlocked, the differential pressure interlocking valve group (9) includes magnetic valve YV1, magnetic valve YV2 and magnetic valve YV3, magnetic valve YV1
Connected by pipeline with pressure measuring chamber (1), magnetic valve YV3 is connected by pipeline with pressure amplification room (5), and magnetic valve YV2 is set
Between magnetic valve YV1 and magnetic valve YV3.
3. a kind of pressure amplifier suitable for pressure measuring system according to claim 1, it is characterised in that：The transmission rod
(2) body of rod and two extensions are included, two extensions are threadedly coupled with body of rod two ends respectively, and an extension is placed in
The pressure measuring chamber (1) is interior and the second elastic membrane (15) is arranged on the extension end face, and the first elastic membrane (14) is fixed on the body of rod
On, and the first elastic membrane (14) outer circumferential edges are fixed on the side wall of pressure measuring chamber (1)；Another extension is placed in the pressure
Amplify in room (5) and the second elastic membrane (15) is arranged on the extension end face, the first elastic membrane (14) is fixed on the body of rod, and
First elastic membrane (14) outer circumferential edges are fixed on the side wall of pressure amplification room (5).
4. a kind of pressure amplifier suitable for pressure measuring system according to claim 1, it is characterised in that：It is described non-conductive
Medium is one kind in ethylene glycol, deionized water or silicone oil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611024730.0A CN107036755B (en) | 2016-11-16 | 2016-11-16 | A kind of pressure amplifier suitable for pressure measuring system |
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| CN201611024730.0A CN107036755B (en) | 2016-11-16 | 2016-11-16 | A kind of pressure amplifier suitable for pressure measuring system |
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| CN107036755B CN107036755B (en) | 2019-07-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282938A (en) * | 2018-09-30 | 2019-01-29 | 深圳电通纬创微电子股份有限公司 | A kind of intelligent gas pressure sensor and its zero point correction method |
| CN117419862A (en) * | 2023-11-30 | 2024-01-19 | 济南豪瑞通专用汽车有限公司 | Tank water tightness detection device and detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512141A (en) * | 2002-12-27 | 2004-07-14 | ��ʽ�����ɽ | Differential/pressure transmitter |
| CN201488849U (en) * | 2009-04-24 | 2010-05-26 | 上海皓鹰测控技术有限公司 | Combined high-temperature fusant pressure transmitter |
| CN201724697U (en) * | 2010-08-03 | 2011-01-26 | 深圳市泉源仪表设备制造有限公司 | Variable-area target-type flowmeter capable of measuring dual parameters of differential pressure and displacement |
| JP2013185971A (en) * | 2012-03-08 | 2013-09-19 | Seiko Instruments Inc | Pressure sensor |
| US20130283912A1 (en) * | 2012-04-27 | 2013-10-31 | Freescale Semiconductor, Inc. | Sensor device and related fabrication methods |
| CN106052944A (en) * | 2015-04-02 | 2016-10-26 | 森萨塔科技公司 | Combined temperature, absolute and differential pressure sensor assembly |
-
2016
- 2016-11-16 CN CN201611024730.0A patent/CN107036755B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1512141A (en) * | 2002-12-27 | 2004-07-14 | ��ʽ�����ɽ | Differential/pressure transmitter |
| CN201488849U (en) * | 2009-04-24 | 2010-05-26 | 上海皓鹰测控技术有限公司 | Combined high-temperature fusant pressure transmitter |
| CN201724697U (en) * | 2010-08-03 | 2011-01-26 | 深圳市泉源仪表设备制造有限公司 | Variable-area target-type flowmeter capable of measuring dual parameters of differential pressure and displacement |
| JP2013185971A (en) * | 2012-03-08 | 2013-09-19 | Seiko Instruments Inc | Pressure sensor |
| US20130283912A1 (en) * | 2012-04-27 | 2013-10-31 | Freescale Semiconductor, Inc. | Sensor device and related fabrication methods |
| CN106052944A (en) * | 2015-04-02 | 2016-10-26 | 森萨塔科技公司 | Combined temperature, absolute and differential pressure sensor assembly |
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| CN109282938A (en) * | 2018-09-30 | 2019-01-29 | 深圳电通纬创微电子股份有限公司 | A kind of intelligent gas pressure sensor and its zero point correction method |
| CN109282938B (en) * | 2018-09-30 | 2024-02-27 | 深圳电通纬创微电子股份有限公司 | Intelligent gas pressure sensor and zero calibration method thereof |
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