CN110068385A - A kind of single cylinder piston gas flow standard device of high-end reference level - Google Patents
A kind of single cylinder piston gas flow standard device of high-end reference level Download PDFInfo
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- CN110068385A CN110068385A CN201910304033.8A CN201910304033A CN110068385A CN 110068385 A CN110068385 A CN 110068385A CN 201910304033 A CN201910304033 A CN 201910304033A CN 110068385 A CN110068385 A CN 110068385A
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000001360 synchronised effect Effects 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 18
- 238000005259 measurement Methods 0.000 description 16
- 230000033001 locomotion Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005693 optoelectronics Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010622 cold drawing Methods 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
- G01F25/17—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters using calibrated reservoirs
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Abstract
The present invention relates to high accuracy flow standard devices, in particular to a kind of single cylinder piston gas flow standard device of high-end reference level, it solves existing gas flow standard device and does not have the structure type for keeping accuracy long-time stability and adapting to high accuracy requirement, and do not have the technical issues of detectability to the real-time high-accuracy of working gas mixture condition parameter.A kind of single cylinder piston gas flow standard device of high-end reference level, including driving and its associated mechanisms, pedestal and cylinder body, cylinder body is non-flanged cylindrical member, and it is arranged between driving and its associated mechanisms and pedestal, driving and its associated mechanisms include the servo motor interconnected, retarder, toothed synchronous wheel belt, ball nut lead screw pair, cylinder cover and piston, the rotary nut of ball nut lead screw pair is mounted on the center of cylinder cover, the lower end of ball nut lead screw pair passes through the piston flange being arranged in below piston and is fastenedly connected, ball bar measuring system is provided on cylinder cover.
Description
Technical field
The present invention relates to high accuracy flow standard device, in particular to a kind of single cylinder piston gas of high-end reference level
Flow standard device.
Background technique
Flow standard device is the necessary equipment that transmission of quantity value is realized in flow measurement field.The country started to occur quasi- in recent years
The higher single cylinder piston gas flow standard device of exactness.It is the patent of 102175292A that wherein patent, which has notification number, earlier
The patent for being 205620002U with notification number.It can be seen that inventor exists to its invention from the background technique that these patents are stated
The positioning of accuracy in affiliated standard set-up type, by professional angle at 0.2~0.3 grade, relevant information document is quasi- by this
The reference level that exactness grade is divided into standard set-up is low-grade.And in such device, when its output gas rate-of flow is up to 0.05
When grade requires, single cylinder piston gas flow standard device is a kind of high-grade reference level of medium-small flow gas flow transmission of quantity value
Expensive equipment.This requires made devices to have the structure type for adapting to high accuracy requirement and to working gas medium work
The detectability of the real-time high-accuracy of condition parameter；It is also desirable to have the technical solution for keeping accuracy long-time stability, with
It reduces maintenance cost and prolongs the service life, but existing flow standard device can not structurally and functionally reach above-mentioned
Standard.
Summary of the invention
It is an object of the invention to:
The object of the present invention is to provide a kind of single cylinder piston gas flow standard device of high-end reference level, with
Meet expanded uncertainty to detect up to 0.05 grade of desired piston/cylinder structure, piston at the uniform velocity driving mechanism and its Displacement Feedback
Closed-loop measuring and ensure that gas duty parameter meets the distributed headend equipment of the detectability of real-time high-accuracy requirement,
Specifically provide be different from existing same device be able to maintain accuracy steady in a long-term without flange housing structure scheme.
The present invention to achieve the goals above, specifically uses following technical scheme:
A kind of single cylinder piston gas flow standard device of high-end reference level, including driving and its associated mechanisms, pedestal
Live headend equipment is detected with the gas duty parameter of cylinder body, stroke distances detection part and real-time high-accuracy.Cylinder body is nothing
The cylindrical shape component of flange is made of a kind of cold rolling seamless steel using crystal phase even tissue without flange, without inside and outside
Ladder circle cylinder, solderless connection interface and other processing holes, only only inner wall by high finishing meets circularity and cylindricity
The cylindrical structure part that cubing partial uncertainty requires is vertical mounting structure, and is passed through using four external feed rods
Stop nut combination tenses between driving and its associated mechanisms and the pedestal, and pedestal is that the lower end of cylinder body undertakes sealing work
With.Driving and its associated mechanisms include interconnect servo motor, retarder, toothed synchronous wheel belt, ball nut lead screw pair,
Cylinder cover and piston are provided with sealing ring on piston, driven by driving and its associated mechanisms done in the inside of cylinder body it is even up and down
Speed moves, and the amount of movement of stroke distances and record unit time is measured by the ball bar measuring system being arranged on cylinder cover,
The rotary nut of ball nut lead screw pair is mounted on the center of cylinder cover, and the lower end of ball nut lead screw pair is by being arranged in work
The piston flange of plug lower section is fastenedly connected.
Further, the top connection of piston is connected with lead screw above the inside feed rod there are three internal feed rod
The lower section of upper flange, internal feed rod is connected with piston flange, and piston and its driving mechanism borrow cylinder cover as base, design
The nut rotary type precise ball nut screw pair of cylinder cover axial location is mounted on as piston displacement executing agency；It is high
Performance AC servo motor, by the nut rotation that toothed synchronous wheel belt driving axial is fixed, drives ball after precision speed reduction device
Nut screw pair makes the piston for being connected to lead screw lower end do reciprocating linear motion, feed screw nut mounting plane 0 ° of excircle,
90 °, parallel three groups of the installation of the cylinder body axis straight-line ball guide sleeves for piston mobile guide in 180 ° of positions, three and cylinder body axis
For feed rod as piston mobile guide bar and ball bearing guide bushing blind-mate, internal feed rod upper end passes through flange inside parallel guiding
Disk is fixed with lead screw top, and the lower end of internal feed rod is fixedly connected with the piston together with lead screw；Piston and cylinder body cooperate outer
Cylindrical surface is respectively in upper and lower and middle part configuration self-lubricating guide ring and multi-layer sealed Assembled sealer.
Further, the outer cover of internal feed rod 1-8 is equipped with straight-line ball guide sleeve 1-9.
Further, instruction control switch 1-12 and cut-offing protecting switch 1-11 is provided on cylinder cover 1-5.
Further, piston flange 1-6 and lead screw upper flange 1-10 are provided with travel position sender bar 1-13, stroke position
Setting sender bar 1-13 is the stairstepping shaft with boss 1-14.
Further, the stroke distances detection part is high accuracy stainless steel ball bar ruler measuring system, using reading
Several fixed ball bar ruler move modes work, ball bar measuring system include reading head 1-16 interconnected, ball bar ruler 1-17 and
Universal ball bearing 1-18, reading head 1-16 are fixed on cylinder cover 1-5 by mounting rack, and cooperation is provided on reading head 1-16
Hole, the inside of matching hole have been arranged ball bar ruler 1-17, and the both ends of ball bar ruler 1-17, measuring system is arranged in universal ball bearing 1-18
Reading head 1-16 is fixed on the piston 1-7 on pedestal 2 and is oriented on the special stand of 270 ° of positions of the same circle of internal feed rod 1-8 and cylinder body
Axis is installed in parallel, the floating mount structure patent that ball bar ruler 1-17 uses designer to declare, and is attached to the internal feed rod 1-8 of guiding
Cooperate between upper flange and piston 1-7 and with reading head 1-16 pilot hole, is moved synchronously with piston 1-7；Reading head 1-16 passes through
The collected piston 1-7 mobile data of ball bar ruler 1-17 directly input be arranged in computer when base interface card in counting
Device, obtains accurate piston 1-7 unit time amount of movement, when base interface card be the high precision that calibrating can be independently passed to time quantum
Spend timing counter block.
Further, pedestal 2 is the flange arrangement with upper flange, upper flange, base flange plate including integrally connected
2-2 and three equally distributed lower margin 2-3, the lower margin 2-3's is height-adjustable.
Further, it is inlaid with O-shaped rubber seal 2-1 on the outside of upper flange, O-shaped rubber seal 2-1 is interior with cylinder body 3
Disc is engaged.
Further, the flange periphery of pedestal 2 is provided with gas inlet-outlet 2-4, intelligent humidity sensor 2-6, temperature intelligence
Can sensor 2-7 and pressure intelligent sensor 2-8, for detecting the operating condition of working gas, on gas inlet-outlet 2-4 and cylinder body 3
Channel at be provided with multiple pressure monitoring switch 2-5.
Further, mesh enclosure 2-10 is provided with below intelligent humidity sensor 2-6, under temperature intelligent sensor 2-7
Side is provided with open type sheath 2-9, and this encapsulating structure ensures that the real-time of detection, complete machine are controlled by computer and configure peace
Full guard.
The operation principle of the present invention is that:
In the use of the present invention, first starting driving and its associated mechanisms, driving and its associated mechanisms by servo motor, subtract
Fast device, toothed synchronous wheel belt and ball nut lead screw pair composition, the rotary nut of lead screw pair be mounted on using cylinder cover as
The cylinder cover center of base, lead screw lower end are fastenedly connected by piston flange and piston.By control system after servo motor starting
System instruction revolution, drives synchronizing wheel band to rotate nut through retarder, and piston can move up, and inhale air inlet/outlet to cylinder
It is spare to enter dielectric gas.After this, piston moves down i.e. output medium gas and makees work operation, and the movement of piston is by installing
Three internal feed rods on the outside of feed screw nut are track, by rolling cooperation with its gapless and being fixed on the straight line on base
Ball bearing guide bushing guiding, the upper and lower side of internal feed rod are fixedly connected with lead screw upper flange and piston flange respectively, are arranged on base
There are stroke end instruction control switch and terminal safe operation cut-offing protecting switch, instruction control switch is photoelectric proximity switch,
Control system is output to level signal.Cut-offing protecting switch is contact microswitch, is directly serially connected in driving motor power supply
In circuit.On lead screw upper flange and piston flange, it is mounted with that travel position sender bar up and down and piston synchronous move respectively, row
Journey position sender bar is that stairstepping axis has boss, and sender rod end head is used to trigger the optoelectronic switch of control instruction protection, sender bar
Boss then can extrude the break of contact driving motor power supply of microswitch, to realize the instruction control to piston stroke terminal respectively
System and stroke protection out of control.
The present invention is detected for stroke distances using the high accuracy ball bar with 0.01mm apart from detectability
The reading head of measuring system, ball bar measuring system is fixed on base by mounting bracket, and is led by matching hole to ball bar ruler
To the upper and lower end of ball bar measuring system ball bar ruler is provided with universal ball bearing to meet the axial restraint diameter to ball bar ruler body
To the requirement of micro floating.When piston moves up and down, and ball bar ruler is driven to move synchronously, the hot-wire coil in reading head cuts ball
High accuracy measurement ball generates dfisplacement pulse output inside grid ruler, can accurately be reported out the shift position of piston.
Cylinder body uses the uniform cold drawing seamless steel pipe of material crystal phase structure, is one merely through inner wall retrofit, nothing
The columnar component of interior outer lug boss, processability of product structure is good, typically without stress concentration portion position, when by inventor nearly 5 years
Between measurement tracking, it was demonstrated that the component can ensure that the steady in a long-term of accuracy.Driving, stroke distances measurement and limit of the invention
Isostructural exposed component is protected to be designed with dustproof protecting cover in position.Pedestal of the invention is one with upper flange flange arrangement, method
Blue upper flange inlays O-shaped rubber seal and cylinder body cooperates, and prevents the external leakage of working media gas.Base flange plate uniformly distributed three
The lower margin support complete machine of a adjustment height simultaneously installs horizontal adjustment for complete machine.It is excellent that the flange periphery of pedestal is equipped with measurement error
In high accuracy temperature intelligent sensing and measurement error of the intelligent humidity sensor, measurement error of 1.5%RH better than 0.05 DEG C
High accuracy pressure intelligent sensor better than 0.01% is for detecting output gas duty parameter.Intelligent humidity sensor and temperature
Open type sheath is respectively adopted in degree intelligence sensor enables its sensing element directly to contact raising detection with measured medium with mesh enclosure
Real-time.The flange periphery of pedestal is arranged in gas inlet-outlet, real by the electric-air valve of control system on external air delivering pipeline
Existing working media gas enters and leaves exchange.Pressure detection switch is provided under cylinder piston at gas inlet-outlet and cylinder channel
In-cylinder pressure when row work and uplink air inlet is detected, and the control air valve positive/negative-pressure overload damage out of control being likely to occur is avoided
Wound, above is exactly the working principle of the invention.
The present invention compared with prior art, the invention has the following advantages:
1, the present invention devise a kind of unstressed concentration for being different from existing flange form cylinder claim body cylinder member and
The supporting structure adapted to therewith, to obtain the retentivity of geometry of the circle accuracy in good processability of product structure and cylinder body, it is ensured that
The high accuracy of gas volume output parameter and steady in a long-term.
2, the present invention is using gapless and the small ball-screw-transmission of frictional force can be very in conjunction with high-grade drives mechanism
Low speed jerking motion is overcome well, improves low speed running stability, namely is improved the accurate of low target phase gas flow and stablized.
3, the present invention directly obtains the closed-loop measuring of piston shift position using ball bar ruler measuring system in real time, eliminates biography
Dynamic error influences；The ball bar base ruler and cylinder body linear expansion coefficient having the same of ball bar ruler measuring system also reduce temperature pair simultaneously
Stroke measurment bring, which adds uncertainty, to be influenced.
It 4, is the measurement of current ball bar ruler present invention employs the ball bar ruler radial floating mounting structure patent that designer declares
The innovation orientation form of system application, it efficiently solves ball bar ruler measurement and holds in the case where moving parts is without positioning datum
The deformation of ball bar ruler caused by easily, to avoid impacting accuracy of measurement retentivity.
5, high accuracy temperature, pressure, the detection of humidity and the time reference that the present invention configures are each in addition to strictly meeting
The requirement of the partial uncertainty of tested parameter, is designed to the distributed intelligence headend equipment for adjustment and magnitude tracing,
Especially the sensing element of temperature, humidity is designed can directly contact in open type sheath with tested gas medium, mention significantly
The real-time of high detection parameters is to guarantee the true of magnitude.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the overall structure diagram of the embodiment of the present invention；
Fig. 2 is piston, driving executing agency and its dependency structure schematic diagram of the embodiment of the present invention；
Fig. 3 is the embodiment of the present invention without flange cylinder member schematic diagram；
Fig. 4 is pedestal of the invention and front-end detection equipment mounting structure schematic diagram.
Appended drawing reference: 1, driving and its associated mechanisms, 1-1, servo motor, 1-2, retarder, 1-3, toothed synchronous wheel belt,
1-4, ball nut lead screw pair, 1-5, cylinder cover, 1-6, piston flange, 1-7, piston, 1-8, external feed rod, 1-9, straight line rolling
Pearl guide sleeve, 1-10, lead screw upper flange, 1-11, cut-offing protecting switch, 1-12, instruction control switch, 1-13, sender bar, 1-14,
Boss, 1-16, reading head, 1-17, ball bar ruler, 1-18, universal ball bearing, 2, pedestal, 2-1, O-shaped rubber seal cushion rubber, 2-2,
Base flange plate, 2-3, lower margin, 2-4, gas inlet-outlet, 2-5, pressure detection switch, 2-6, intelligent humidity sensor, 2-7, temperature
Spend intelligent sensing, 2-8, pressure intelligent sensor, 2-9, open type sheath, 2-10, mesh enclosure, 3, cylinder body, 4, external feed rod.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
It elaborates below with reference to Fig. 1 to Fig. 4 to the present invention.
Case study on implementation one: as shown in Figures 1 to 4, example provides a kind of single cylinder piston gas flow mark of high-end reference level
Standard apparatus, the gas including driving and its associated mechanisms 1, pedestal 2 and cylinder body 3, stroke distances detection part and real-time high-accuracy
Body duty parameter detects live headend equipment.Cylinder body 3 is non-flanged cylindrical shape component, is a kind of equal using crystal phase tissue
Without flange, without inside and outside ladder circle cylinder, solderless connection interface and other processing holes made of even cold rolling seamless steel, only only have
Inner wall makes circularity and cylindricity meet the cylindrical structure part of cubing partial uncertainty requirement by high finishing, is vertical
Formula mounting structure, and using four external feed rod 1-8 by stop nut combination tension driving and its associated mechanisms 1 with it is described
Between pedestal 2, pedestal 2 is that the lower end of cylinder body 3 undertakes sealing function.Driving and its associated mechanisms 1 include the servo interconnected
Motor 1-1, retarder 1-2, toothed synchronous wheel belt 1-3, ball nut lead screw pair 1-4, cylinder cover 1-5 and piston 1-7, piston
It is provided with sealing ring on 1-7, is driven by driving and its associated mechanisms 1 and does uniform motion up and down in the inside of cylinder body 3, and by cylinder body
The ball bar measuring system being arranged on upper cover 1-5 measures the amount of movement of stroke distances and record unit time, ball nut lead screw
The rotary nut of secondary 1-4 is mounted on the center of cylinder cover 1-5, and the lower end of ball nut lead screw pair 1-4 is by being arranged in piston
Piston flange 1-6 below 1-7 is fastenedly connected.
The operation principle of the present invention is that:
In the use of the present invention, starting driving and its associated mechanisms 1 first, driving and its associated mechanisms 1 are by servo motor
1-1, retarder 1-2, toothed synchronous wheel belt 1-3 and ball nut lead screw pair 1-4 composition, the rotary nut of lead screw pair are mounted on
Cylinder cover center using cylinder cover 1-5 as base, lead screw lower end are fastenedly connected by piston flange 1-6 and piston 1-7.
By control system instruction revolution after servo motor 1-1 starting, synchronizing wheel band 1-3 is driven to rotate nut through retarder 1-2, piston
1-7 can be moved up, and keep air inlet/outlet 2-4 spare to cylinder sucking dielectric gas.After this, piston 1-7 is moved down
I.e. output medium gas makees work operation, and the movement of piston 1-7 is by being mounted on three internal feed rod 1-8 on the outside of feed screw nut
Track, by rolling the straight-line ball guide sleeve 1-9 guiding for cooperating and being fixed on base with its gapless, internal feed rod 1-8's
Upper and lower side is fixedly connected with lead screw upper flange 1-10 and piston flange 1-6 respectively, and stroke end instruction is provided on base 1-5
Control switch 1-12 and terminal are safely operated cut-offing protecting switch 1-11, and instruction control switch 1-12 is photoelectric proximity switch, with
Level signal is output to control system.Cut-offing protecting switch 1-11 is contact microswitch, is directly serially connected in driving motor electricity
In resource loop.On lead screw upper flange 1-10 and piston flange 1-6, it is mounted with travel position sender bar 1-13 and work up and down respectively
Plug moves synchronously, and travel position sender bar 1-13 is that stairstepping axis has boss 1-14, and the sender end bar 1-13 is for triggering control
The optoelectronic switch of protection is instructed, sender bar boss 1-14 then can extrude the break of contact driving motor power supply of microswitch 1-11,
To realize the instruction control and stroke protection out of control to piston stroke terminal respectively.
The present invention is detected for stroke distances using the high accuracy ball bar with 0.01mm apart from detectability
The reading head 1-16 of measuring system, ball bar measuring system is fixed on base 1-5 by mounting bracket, and by matching hole to ball
Grid ruler 1-17 guiding, the upper and lower end of ball bar measuring system ball bar ruler 1-17 are provided with universal ball bearing 1-18 to meet to ball
The requirement of the micro floating of axially-fixed and radial of grid ruler body.When piston 1-7 is moved up and down, and ball bar ruler 1-17 is driven to move synchronously,
High accuracy measurement ball generates dfisplacement pulse output, Ke Yizhun inside hot-wire coil cutting ball bar ruler 1-17 in reading head 1-16
Really it is reported out the shift position of piston 1-7.
Cylinder body 3 uses the uniform cold drawing seamless steel pipe of material crystal phase structure, is one merely through inner wall retrofit, nothing
The columnar component of interior outer lug boss, processability of product structure is good, typically without stress concentration portion position, when by inventor nearly 5 years
Between measurement tracking, it was demonstrated that the component can ensure that the steady in a long-term of accuracy.Driving, stroke distances measurement and limit of the invention
Isostructural exposed component is protected to be designed with dustproof protecting cover in position.Pedestal 2 of the invention is one with upper flange flange arrangement, method
Blue upper flange inlays O-shaped rubber seal 2-1 and cylinder body 3 cooperates, and prevents the external leakage of working media gas.Base flange plate 2-
The lower margin 2-3 support complete machine of 2 uniformly distributed three adjustment heights simultaneously installs horizontal adjustment for complete machine.The flange periphery of pedestal 2 is installed
There are intelligent humidity sensor 2-6 of the measurement error better than 1.5%RH, measurement error to be better than 0.05 DEG C of high accuracy temperature intelligent
The high accuracy pressure intelligent sensor 2-8 of sensing 2-7 and measurement error better than 0.01% is for detecting output gas operating condition ginseng
Number.Open type sheath 2-9 and mesh enclosure 2-10, which is respectively adopted, in intelligent humidity sensor 2-6 and temperature intelligent sensor 2-7 keeps its quick
Sensing unit can directly contact raising detection real-time with measured medium.The flange periphery of pedestal 2 is arranged in gas inlet-outlet 2-4,
Realize that working media gas enters and leaves exchange by the electric-air valve of control system on external air delivering pipeline.In gas inlet-outlet 2-4
It is carried out with in-cylinder pressure of the pressure detection switch 2-5 in cylinder piston downlink working and uplink air inlet is provided at cylinder channel
Detection avoids the control air valve positive/negative-pressure overload damage out of control being likely to occur, and above is exactly the working principle of the invention.
Case study on implementation two: as shown in Figures 1 to 4, this implementation is to advanced optimize on the basis of embodiment 1, this implementation
Example emphasis illustrates improvements compared with Example 1, and something in common is repeated no more, is connected with above the piston 1-7
Lead screw upper flange 1-10, the lower section of internal feed rod 1-8 are connected with above three internal feed rod 1-8, the inside feed rod 1-8
It is connected with piston flange 1-6, piston 1-7 and its driving mechanism borrow cylinder cover 1-5 as base, devise and are mounted on cylinder body
The nut rotary type precise ball nut screw secondary 1-4 of upper cover 1-5 axial location is used as piston 1-7 displacement actuator；Gao Xing
Energy AC servo motor 1-1 is rotated after precision speed reduction device 1-2 by the fixed nut of toothed synchronous wheel belt 1-3 driving axial,
Drive ball nut lead screw pair 1-4 that the piston 1-7 for being connected to lead screw lower end is made to do reciprocating linear motion；It is flat in feed screw nut installation
0 ° of the excircle in face, 90 °, parallel 3 axis of cylinder body in 180 ° of positions installs three groups of straight-line balls for piston 1-7 mobile guide and leads
Set, three guiding inside feed rod 1-8s parallel with cylinder body axis match as piston 1-7 mobile guide bar with ball bearing guide bushing gapless
It closes, the upper end internal feed rod 1-8 is fixed by ring flange and lead screw top, and the lower end of internal feed rod 1-8 is together with lead screw and work
Plug 1-7 is fixedly connected；The external cylindrical surface that piston 1-7 and cylinder body 3 cooperate configures self-lubricating guide ring at upper and lower and middle part respectively
With multi-layer sealed Assembled sealer.
Case study on implementation three: as shown in Figures 1 to 4, this implementation is to advanced optimize on the basis of embodiment 1, this implementation
Example emphasis illustrates improvements compared with Example 1, and something in common repeats no more, and the safeguard protection is piston 1-7 row
Journey protection and gas inlet-outlet 2-4 positive/negative-pressure overload protection, piston 1-7 or more stroke are provided with stroke end instruction control and row
Journey terminal is safely operated power-off protection mechanism, and terminal instruction controls the instruction control switch 1- by being mounted on base switch bracket
12 obtain information, and pass it to control system, and instruction servo motor 1-1 power-off is out of service.Terminal safe operation power-off
Protection obtains information, the electricity of force disconnect servo motor 1-1 by the cut-offing protecting switch 1-11 being mounted on same switch bracket
Source makes servo motor 1-1 power loss and brakes out of service；Optoelectronic switch is by being mounted on piston flange 1-6 and lead screw upper flange
With the mobile sender bar 1-13 of the travel position up and down triggering of piston 1-7, cut-offing protecting switch 1-11 is then by same sender bar 1-13
Boss squeeze triggering.The air inlet of cylinder is provided with pressure detection switch, provide piston 1-7 because air valve it is out of control caused by gas
The positive/negative-pressure overload signal of positive stroke over-voltage and revesal negative pressure in cylinder is detected to warn and control and be stopped by computer by setting value
Machine.
Case study on implementation four: as shown in Figure 1 and Figure 4, this implementation is to advanced optimize on the basis of embodiment 1, this implementation
Example emphasis illustrates improvements compared with Example 1, and something in common repeats no more, the working gas medium temperature detection
It selects time response faster diaphragm type high accuracy platinum sensor to be made, is mounted in the sheath of opening, in detection electricity
Road cooperation is lower by detection calibration, and temperature intelligent sensor 2-7 ensures that accuracy can be obtained up to 0.05 DEG C in grade time second
Temperature magnitude；Pressure can only sensor 2-8 be configured with Millisecond response absolute pressure accuracy be 0.01% sensor；Gas
Simultaneously mesh enclosure protection is arranged in the humidity sensor 2-6 of humidity detector configuration 1.5%HR accuracy detectability；Temperature, pressure
And humidity sensor is designed to distributed intelligence headend equipment, it is ensured that medium parameter independent detection in real time.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will fall in this Shen
It please be within disclosed scope and spirit.It more specifically, within the scope of the present disclosure and claims, can be to master
The building block and/or layout for inscribing composite configuration carry out a variety of variations and modifications.In addition to what is carried out to building block and/or layout
Outside variations and modifications, to those skilled in the art, other purposes also be will be apparent.
Claims (10)
1. a kind of single cylinder piston gas flow standard device of high-end reference level, which is characterized in that including driving and its correlation
Mechanism (1), pedestal (2) and cylinder body (3), the cylinder body (3) is non-flanged cylindrical shape component, and uses four outsides
Feed rod (4) by stop nut combination tense it is described driving and its associated mechanisms (1) and the pedestal (2) between, drive and
Its associated mechanisms (1) includes the servo motor (1-1) interconnected, retarder (1-2), toothed synchronous wheel belt (1-3), ball spiral shell
Master screw pair (1-4), cylinder cover (1-5) and piston (1-7), the rotary nut peace of the ball nut lead screw pair (1-4)
Mounted in the center of the cylinder cover (1-5), the lower end of ball nut lead screw pair (1-4) is by setting below piston (1-7)
Piston flange (1-6) be fastenedly connected, be additionally provided with ball bar measuring system on cylinder cover (1-5).
2. the single cylinder piston gas flow standard device of high-end reference level according to claim 1, which is characterized in that institute
There are three the top connections for the piston (1-7) stated internal feed rod (1-8), is connected with silk above the inside feed rod (1-8)
The lower section of thick stick upper flange (1-10), internal feed rod (1-8) is connected with piston flange (1-6).
3. the single cylinder piston gas flow standard device of high-end reference level according to claim 2, which is characterized in that institute
The outer cover for the inside feed rod (1-8) stated is equipped with straight-line ball guide sleeve (1-9).
4. the single cylinder piston gas flow standard device of high-end reference level according to claim 1, which is characterized in that institute
Instruction control switch (1-12) and cut-offing protecting switch (1-11) are provided on the cylinder cover (1-5) stated.
5. the single cylinder piston gas flow standard device of high-end reference level according to claim 1, which is characterized in that institute
The piston flange (1-6) and lead screw upper flange (1-10) stated are provided with travel position sender bar (1-13), the stroke position
Setting sender bar (1-13) is the stairstepping shaft with boss (1-14).
6. the single cylinder piston gas flow standard device of high-end reference level according to claim 1, which is characterized in that institute
The ball bar measuring system stated includes reading head interconnected (1-16), ball bar ruler (1-17) and universal ball bearing (1-18), institute
The reading head (1-16) stated is fixed on cylinder cover (1-5) by mounting rack, is provided with matching hole on reading head (1-16), institute
The inside for stating matching hole has been arranged ball bar ruler (1-17), and the universal ball bearing (1-18) is arranged the two of ball bar ruler (1-17)
End.
7. the single cylinder piston gas flow standard device of high-end reference level according to claim 1, which is characterized in that institute
The pedestal (2) stated is the flange arrangement with upper flange, the upper flange, base flange plate (2-2) including integrally connected and three
Equally distributed lower margin (2-3), the lower margin (2-3) it is height-adjustable.
8. the single cylinder piston gas flow standard device of high-end reference level according to claim 7, which is characterized in that institute
It is inlaid with O-shaped rubber seal (2-1) on the outside of the upper flange stated, the O-shaped rubber seal (2-1) is contacted with cylinder body (3)
Cooperation.
9. the single cylinder piston gas flow standard device of high-end reference level according to claim 1, which is characterized in that institute
The flange periphery for stating pedestal (2) is provided with gas inlet-outlet (2-4), intelligent humidity sensor (2-6), temperature intelligent sensor
(2-7) and pressure intelligent sensor (2-8) is provided at the channel in the gas inlet-outlet (2-4) and cylinder body (3) multiple
Pressure monitoring switchs (2-5).
10. the single cylinder piston gas flow standard device of high-end reference level according to claim 9, which is characterized in that
Being provided with mesh enclosure (2-10) below the intelligent humidity sensor (2-6), under the temperature intelligent sensor (2-7)
Side is provided with open type sheath (2-9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910304033.8A CN110068385B (en) | 2019-04-16 | 2019-04-16 | Single-cylinder piston type gas flow standard device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910304033.8A CN110068385B (en) | 2019-04-16 | 2019-04-16 | Single-cylinder piston type gas flow standard device |
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| CN110068385B CN110068385B (en) | 2024-05-07 |
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| CN113252125A (en) * | 2021-05-25 | 2021-08-13 | 宜宾机电一体化研究所 | High measurement accuracy wet-type gas flowmeter and measurement drum slewing mechanism and measurement indicating mechanism |
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| CN110068385B (en) | 2024-05-07 |
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