CN107036755B - 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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- CN107036755B CN107036755B CN201611024730.0A CN201611024730A CN107036755B CN 107036755 B CN107036755 B CN 107036755B CN 201611024730 A CN201611024730 A CN 201611024730A CN 107036755 B CN107036755 B CN 107036755B
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- 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 amplifiers suitable for pressure measuring system, amplify room including concora crush room, pressure measuring chamber, pressure transmitter and pressure, non-conductive medium is filled in concora crush room, transmission rod is equipped in concora crush room, transmission rod both ends area of section is different and activity runs through pressure measuring chamber, pressure amplification subsequent renew in room is stretched respectively, the first elastic membrane and the second elastic membrane are equipped at transmission rod both ends, first elastic membrane and the second elastic membrane completely cut off pressure measuring chamber and pressure amplification room and concora crush room, and the second elastic membrane is located on the end face of power transmission boom end；The slide plate to match with hot-wire coil is installed in locating rod one end, the locating rod other end extends outwardly after running through concora crush room.The pressure of tested point mechanically amplifies, and the requirement for manufacturing sensitivity, precision and range of corresponding pressure transmitter is greatly lowered, and whole system is structurally reasonable, and easy to operate, signal is accurate and is easy to read.
Description
Technical field
The present invention relates to a kind of measuring devices, and in particular to a kind of pressure amplifier suitable for pressure measuring system.
Background technique
In engineering and scientific research project, the pressure precise measurement of low relative pressure system and high-pressure system low voltage difference it is accurate
Measurement is always a technological difficulties.In engineering, the measurement of low relative 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 of guarantee system operational safety.In scientific research project,
The measurement of low relative pressure system pressure and the measurement of high-pressure system low voltage difference are often the important parameter of testing inspection, are determining
Important indicator whether success of the test.In practical situations, the domestic differential pressure for differential pressure in 100Pa high-pressure system below is surveyed
There are the difficulties of calibration technique ability for the calibration of quantity sensor, and calibrating is at high cost, 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 100Pa measurement data below.
About the amplification of pressure measuring system pressure, there are many technologies.Such as patent of invention GB19660039746 19660906 is provided
A kind of low pressure measurement device, the device include bellows, spring, drive rod.It is small by bellows top to survey pressure side pressure
Ball extruding drive rod one end, drive rod and bellows contact point on the same axis, pass through adjusting 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, since nut is living
Moving part, so the measurement strong magnification ratio of side pressure can change under drive rod vibration condition.Therefore the system is not suitable for for a long time
High-precision pressure measurement.
For another example patent 200910000717.5 provides a kind of differential pressure pick-up.The device is former using spring-tube manometer
Reason, the device include the composition such as package casing, the first and second sensing elements (spring-tube type), amplifier module.The device possesses
Process is amplified in the effect of amplification are as follows: deformation quantity is different between sensing element, and long connecting rod is caused to push gear set, completes movement
Amplification.This enlarging function is to cooperate principle using gear, improves the sensitivity of display result, and it is strong to complete measurement side pressure
Amplification, realize the reduction of same pressure measuring instruments measurement lower limit.
Summary of the invention
It is an object of that present invention to provide a kind of pressure amplifier suitable for pressure measuring system, guarantee that measuring device can either be
It used under high temperature, guarantee system sealing, and pressure amplification factor can be adjusted according to actual needs.
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 amplify room through the pressure of the concora crush room other end, pressure amplification room is connected to pressure transmitter, described
It is filled with non-conductive medium in concora crush room, transmission rod is equipped in the concora crush room, transmission rod both ends area of section is different and divides
Activity is not stretched through pressure measuring chamber, pressure amplification subsequent renew in room, is equipped with the first elastic membrane and the second elasticity at transmission rod both ends
Film, the first elastic membrane and the second elastic membrane completely cut off pressure measuring chamber and pressure amplification room and concora crush room, and the second elastic membrane is located at
On the end face of power transmission boom end；The hot-wire coil for further including locating rod and being arranged in the middle part of transmission rod is pacified in locating rod one end
Equipped with the slide plate to match with hot-wire coil, the locating rod other end extends outwardly after running through concora crush room, and is equipped in locating rod
The cable being electrically connected with slide plate.It can not be in the standard of 100 pas measurement data below for pressure measurer in the prior art
True property, inventor measure pressure to be measured equally by the way of mechan-amplifier, and wherein pressure enlarger includes power transmission
Bar, pressure measuring chamber, pressure amplification room and concora crush room, concora crush room is connected to by pipe with welding system pressure measurement point, to guarantee concora crush
Room is in high pressure conditions always, and the cross-sectional area of two ends of transmission rod is in certain proportion, and two end difference activities run through
Pressure measuring chamber, pressure amplify room, and indoor in pressure measuring chamber and pressure amplification, in the end face of transmission rod and transmission rod and pressure measuring chamber
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 for realizing pressure measuring chamber or pressure amplification room and concora crush room between physical isolation, to avoid pressure measuring chamber, concora crush room and
It generates and influences each other between pressure amplification room three, similarly, the hyperbaric environment that connected system pressure is formed in concora crush room can
Guarantee the first elastic membrane will not excessively deformation and be damaged；And live wire is installed on being located at the indoor transmission rod of concora crush
Circle, the slide plate and hot-wire coil of locating rod lower end cooperate, and the upper end of locating rod extends outwardly through concora crush room, and the one of hot-wire coil
End is separately connected the two poles of the earth of power supply with the cable in locating rod；
When measurement, measuring medium is entered in pressure measuring chamber by pipeline, and reference media enters to pressure by pipeline and amplifies
Interior, since the cross-sectional area of two end faces of transmission rod is different, transmission rod can generate the displacement in horizontal direction, when transmission rod
Motor rest and stablize when being maintained, relative displacement occurs for slide plate and hot-wire coil, and bar position detects signal and passes through external ammeter
Detection, can be calculated the moving displacement Δ l=R/ Δ R of transmission rod according to Ohm's law formula R=U/I, and wherein R indicates to be powered
The resistance value of coil, Δ R indicate the resistance value 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, and wherein k is the Experimental Calibration coefficient of elastic membrane, at this time 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 are as follows: Ps=(PlSl
+F)/Ss, wherein PsIndicate the pressure in the pressure and pressure measuring chamber at measured point, PlIndicate that pressure amplifies indoor pressure,
SlIndicate that pressure amplifies the face area of indoor transmission rod, SsIndicate the face area of transmission rod in pressure measuring chamber.Tested point pressure
Amplification factor is PlWith PsRatio, the pressure of tested point mechanically amplifies, and corresponding pressure is greatly lowered
The requirement for manufacturing sensitivity, precision and range of transmitter, whole system is structurally reasonable, easy to operate, and signal is accurate and easy
In reading.
Further, the medium of the indoor media filler of concora crush is non-conductive medium, by elastic membrane to sealing, so that should
Medium can not circulate in each chamber, to guarantee that it is fixed that the scale dimension of pressure amplification keeps steady；And it in concora crush room, is surveyed by resistance
Amount mode can realize the precise measurement of transmission rod moving distance, due to the first elastic membrane and the second elastic membrane using same material with
Size, and elasticity modulus 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, accurately calculating for practical differential pressure can be achieved by calculating.
It further include differential pressure interlocking valve group, the differential pressure interlocking valve group includes solenoid valve YV1, solenoid valve YV2 and solenoid valve
YV3, solenoid valve YV1 are connected to by pipeline with pressure measuring chamber, and solenoid valve YV3 amplifies room with pressure by pipeline and is connected to, and solenoid valve
YV2 is arranged between solenoid valve YV1 and solenoid valve YV3.Solenoid valve YV1 connects measurement pressure, and solenoid valve YV3 connects base pressure, work
When making, measurement pressure is judged through solenoid valve YV1, if measurement pressure needs not move through pressure amplification, solenoid valve YV1 is closed
It closes, then measures pressure and directly measured by corresponding transmitter；It is not suitable for corresponding transmitter when measuring point pressure values are too low and surveys
When amount, solenoid valve YV1 and solenoid valve YV2 are opened, and after testing medium is connected to pressure measuring chamber, the pressure of testing medium passes through transmission rod
It is indoor to be transmitted to pressure amplification, because the face area at transmission rod both ends is different, machinery occurs in the process and puts for pressure to be measured
Greatly, amplified pressure can then immediately arrive at amplified pressure value in cut-in pressure transmitter.
The transmission rod includes the body of rod and two extended segments, and two extended segments connect with body of rod both ends screw thread respectively
It connects, an extended segment is placed in the pressure measuring chamber and the second elastic membrane is mounted on the extended segment 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 extended segment is placed in the pressure
Amplification is indoor and the second elastic membrane is mounted on the extended segment 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 extended segments are respectively placed in pressure measuring chamber, pressure amplification interior, and the first elastic membrane and the second elastic membrane extend two
Section amplifies room physical isolation with pressure measuring chamber or pressure respectively, and can replace two elongated ends at any time, i.e., according to actual needs
Change the forced area at transmission rod both ends, the adjustability of realization device measurement lower limit.
The non-conductive medium is one of ethylene glycol, deionized water or silicone oil.Preferably, selecting ethylene glycol, going
One of ionized water or silicone oil are used as the indoor non-conductive medium of concora crush, 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 lower.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention wraps up transmission rod using concora crush room, even if guaranteeing under high-pressure situations, elastic membrane two sides stress does not surpass
Design value, while containing leaking medium Yi Dan destroyed as elastic membrane, guarantee the stabilization of device and the reliability of installation system；
2, the present invention interlocks the flow direction that valve group controls testing medium by pressure difference, realizes that range can carry out according to actual needs
Change, to guarantee measurement accuracy；
3, the present invention also by changing transmission rod both ends forced area, can realize that corresponding transmitter is surveyed according to actual needs
Measure the adjustability of lower limit；
4, it is sealed between each chamber using elastic membrane in the present invention, the indoor medium of each chamber is avoided mutually to circulate, with
Guarantee the constant rate of pressure amplification to be measured；
5, the present invention realizes that transmission rod moving distance can accurately measure by resistance measurement mode, because of 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, accurately calculating for practical differential pressure can be achieved by calculating；
6, pressure of the present invention mechanically amplifies, and significantly reduces manufacture sensitivity, the essence of corresponding transmitter
Degree and range requirement；And whole system is structurally reasonable, easy to operate, and signal is accurate and is easy to read.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand 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 the structural diagram of the present invention；
The structural schematic diagram of Fig. 2 pressure enlarger.
Label and corresponding parts title in attached drawing:
1- pressure measuring chamber, 2- transmission rod, 3- concora crush room, 4- locating rod, 5- pressure amplification room, 6- base pressure, 7- measurement pressure
By force, 8- system pressure, 9- differential pressure interlocking valve group, 10- pressure transmitter, 11- bar position measuring signal, 12- hot-wire coil, 13- are sliding
Piece, the first elastic membrane of 14-, the second elastic membrane of 15-.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
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 3 one end of concora crush room
Device 10 and amplify room 5 through the pressure of 3 other end of concora crush room, pressure amplification room 5 is connected to pressure transmitter 10, in institute
It states filled with non-conductive medium in concora crush room 3, the concora crush room 3 is interior to be equipped with transmission rod 2, and 2 both ends area of section of transmission rod is not
Activity runs through pressure measuring chamber 1, pressure amplification subsequent renew in room 5 is stretched together and respectively, is equipped with the first elastic membrane 14 at 2 both ends of transmission rod
With the second elastic membrane 15, the first elastic membrane 14 and the second elastic membrane 15 by pressure measuring chamber 1 and pressure amplification room 5 and concora crush room 3 every
Absolutely, and the second elastic membrane 15 is located on the end face of 2 end of transmission rod；Further include locating rod 4 and the middle part of transmission rod 2 is set
Hot-wire coil 12 is equipped with the slide plate 13 to match with hot-wire coil 12 in 4 one end of locating rod, and 4 other end of locating rod is through flat
Extend outwardly after pressure chamber 3, and is equipped with the cable being electrically connected with slide plate 13 in locating rod 4.It is surveyed for pressure in the prior art
Measuring device can not be in the accuracy of 100 pas measurement data below, and inventor is equally by the way of mechan-amplifier to pressure to be measured
It measures 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
It is connected to by pipe with welding system pressure measurement point, to guarantee that concora crush room 3 is in high pressure conditions always, 2 two ends of transmission rod
Cross-sectional area is in certain proportion, and activity through pressure measuring chamber 1, pressure amplifies room 5 respectively for two ends, and in pressure measuring chamber 1 and
Pressure is amplified in room 5, the contact portion point in the end face of transmission rod 2 and transmission rod 2 and pressure measuring chamber 1 or pressure amplification room 5
Not She You the first elastic membrane 14 and the second elastic membrane 15, first elastic membrane 14 and the second elastic membrane 15 are for realizing pressure measuring chamber 1
Or the physical isolation between pressure amplification room 5 and concora crush room 3, amplify room 5 three to avoid pressure measuring chamber 1, concora crush room 3 and pressure
It generates and influences each other between person, similarly, can guarantee the by the hyperbaric environment that connected system pressure 8 is formed 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 being located in concora crush room 3
12, the slide plate 13 and hot-wire coil 12 of 4 lower end of locating rod cooperate, and the upper end of locating rod 4 extends outwardly through concora crush room 3, are powered
One end of coil 12 and the cable in locating rod 4 are separately connected the two poles of the earth of power supply；
When measurement, measuring medium is entered in pressure measuring chamber 1 by pipeline, and reference media enters to pressure by pipeline and amplifies
Interior, since the cross-sectional area of 2 two end faces of transmission rod is different, transmission rod 2 can generate the displacement in horizontal direction, work as transmission rod
When 2 motor rest and stabilization are maintained, relative displacement occurs for slide plate 13 and hot-wire coil 12, and bar position measuring signal 11 passes through line
The moving displacement Δ l=of transmission rod 2 can be calculated by the detection by external ammeter in cable according to Ohm's law formula R=U/I
R/ Δ R, wherein R indicates the resistance value of hot-wire coil 12, and Δ R indicates the resistance value of resistance per unit length coil；And the first elastic membrane
14 and second elastic membrane 15 to transmission rod 2 longitudinal force be F, meet F=k Δ l, wherein k be elastic membrane Experimental Calibration coefficient,
At this time 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 are as follows: Ps=(PlSl+F)/Ss, wherein PsIt indicates in the pressure and pressure measuring chamber 1 at measured point
Pressure, PlIndicate that pressure amplifies indoor pressure, SlIndicate that pressure amplifies the face area of indoor transmission rod 2, SsIndicate pressure measuring chamber
The face area of transmission rod 2 in 1.The amplification factor of tested point pressure is PlWith PsRatio, the pressure of tested point passes through machinery
Mode amplifies, and the requirement for manufacturing sensitivity, precision and range of corresponding pressure transmitter 10 is greatly lowered, entirely
System structure is reasonable, easy to operate, and signal is accurate and is easy to read.
Further, the medium of the media filler 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 guarantee that it is fixed that the scale dimension of pressure amplification keeps steady；And in concora crush room 3, pass through electricity
Resistance measurement method can realize the precise measurement of 2 moving distance of transmission rod, since the first elastic membrane 14 and the second elastic membrane 15 use
Same material and size, and elasticity modulus is 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, accurately calculating for practical differential pressure can be achieved by calculating.
Embodiment 2
As shown in Figure 1, the present embodiment further includes differential pressure interlocking valve group 9, differential pressure interlocking valve group 9 include solenoid valve YV1,
Solenoid valve YV2 and solenoid valve YV3, solenoid valve YV1 are connected to by pipeline with pressure measuring chamber 1, and solenoid valve YV3 passes through pipeline and pressure
Amplify room 5 to be connected to, and solenoid valve YV2 is arranged between solenoid valve YV1 and solenoid valve YV3.Solenoid valve YV1 connects measurement pressure 7, electricity
Magnet valve YV3 connects base pressure 6, and when work, measurement pressure 7 is judged through solenoid valve YV1, if measurement pressure 7 do not need through
Pressure amplification is crossed, solenoid valve YV1 is closed, then measured 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, solenoid valve YV3 is closed, and solenoid valve YV1 and solenoid valve YV2 are opened, testing medium with
After pressure measuring chamber 1 is connected to, the pressure of testing medium is transmitted to pressure by transmission rod 2 and amplifies in room 5, because 2 both ends of transmission rod
Face area is different, and mechan-amplifier occurs in the process for pressure to be measured, amplified pressure in cut-in pressure transmitter 10,
Amplified pressure value can then be immediately arrived at.
In transmission rod zero point correction, solenoid valve YV1, YV3 close, open solenoid valve YV2, and then pressure amplification room 5 with
Pressure measuring chamber 1 is connected to, 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 extended segments, two extended segments respectively with the body of rod
Both ends are threadedly coupled, and an extended segment is placed in the pressure measuring chamber 1 and the second elastic membrane 15 is mounted on the extended segment end face, the
One elastic membrane 14 is fixed on the body of rod, and 14 outer circumferential edges of the first elastic membrane 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 mounted on the extended segment end face, the first elastic membrane 14 is fixed
On the body of rod, and 14 outer circumferential edges of the first elastic membrane 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 extended segments are respectively placed in pressure measuring chamber 1, pressure is amplified in room 5, and first
5 physical isolation of room is amplified with pressure measuring chamber 1 or pressure respectively in two extended segments by elastic membrane 14 and the second elastic membrane 15, and can
According to actual needs, two elongated ends are replaced at any time, that is, change the forced area at 2 both ends of transmission rod, realization device measurement lower limit
Adjustability.
Preferably, select one of ethylene glycol, deionized water or silicone oil as the non-conductive medium in concora crush room 3,
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 lower.
Embodiment 3
As shown in Figure 1, the present embodiment is the concrete application in pressure difference measurement.
On the basis of not expanding existing pressure transmitter 10, pressure difference transmitter Surveying Actual Precision, pressure difference pick-up is improved
The measurement lower limit of device.Measure the calculation formula of pressure difference are as follows:
Wherein:
Δ p indicates actual pressure differential；
p1Indicate low pressure chamber pressure in pressure transmitter 10；
plIt indicates that differential pressure amplifier high pressure intraventricular pressure is strong, while directly being measured by pressure transmitter 10；
slIndicate transmission rod 2 face area in hyperbaric chamber in differential pressure amplifier；
ssIndicate 2 face area of low-pressure chamber transmission rod in differential pressure amplifier；
F indicates the synthesis to 2 longitudinal force of transmission rod of elastic membrane, calculation formula directly proportional to 2 displacement L of transmission rod
It is F=k Δ L by Experimental Calibration coefficient k；
ΔpceIndicate the measured value of differential pressure transmitter.
In conclusion using different s by the face area for changing 2 both ends of transmission rodlWith ssNumerical value, then can
Improve the differential pressure measurement lower limit of differential pressure transmitter.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (3)
1. a kind of pressure amplifier suitable for pressure measuring system, including concora crush room (3), through the pressure measuring chamber of 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) connection, it is characterised in that: non-conductive medium, the concora crush room (3) are filled in the concora crush room (3)
Interior to be equipped with transmission rod (2), transmission rod (2) both ends area of section is different and activity runs through pressure measuring chamber (1), pressure amplifies room respectively
(5) subsequent renew is stretched, and is equipped with the first elastic membrane (14) and the second elastic membrane (15), the first elastic membrane at transmission rod (2) both ends
(14) pressure measuring chamber (1) and pressure amplification room (5) and concora crush room (3) are completely cut off with the second elastic membrane (15), and the second elastic membrane
(15) on the end face of transmission rod (2) end；The live wire for further including locating rod (4) and being arranged in the middle part of transmission rod (2)
It encloses (12), the slide plate (13) to match with hot-wire coil (12) is installed in locating rod (4) one end, locating rod (4) other end passes through
Extend outwardly after wearing concora crush room (3), and is equipped with the cable being electrically connected with slide plate (13) in locating rod (4)；The transmission rod (2)
Including the body of rod and two extended segments, two extended segments are threadedly coupled with body of rod both ends respectively, and an extended segment is placed in institute
It states in pressure measuring chamber (1) and the second elastic membrane (15) is mounted on the extended segment end face, the first elastic membrane (14) is fixed on the body of rod,
And first elastic membrane (14) outer circumferential edges be fixed on the side wall of pressure measuring chamber (1)；Another extended segment is placed in the pressure and puts
In big room (5) and the second elastic membrane (15) is mounted on the extended segment end face, and the first elastic membrane (14) is fixed on the body of rod, and the
One elastic membrane (14) outer circumferential edges are fixed on the side wall of pressure amplification room (5).
2. a kind of pressure amplifier suitable for pressure measuring system according to claim 1, it is characterised in that: further include differential pressure
It interlocks valve group (9), differential pressure interlocking valve group (9) includes solenoid valve YV1, solenoid valve YV2 and solenoid valve YV3, solenoid valve YV1
It is connected to by pipeline with pressure measuring chamber (1), solenoid valve YV3 is connected to by pipeline with pressure amplification room (5), and solenoid valve YV2 is arranged
Between solenoid valve YV1 and solenoid valve YV3.
3. a kind of pressure amplifier suitable for pressure measuring system according to claim 1, it is characterised in that: described non-conductive
Medium is one of ethylene glycol, deionized water or silicone oil.
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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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| 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 |
| CN117419862B (en) * | 2023-11-30 | 2024-03-26 | 济南豪瑞通专用汽车有限公司 | Tank water tightness detection device and detection method |
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| 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 |
| 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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