CN206074091U - A kind of two-way active piston liquid flow standard device - Google Patents
A kind of two-way active piston liquid flow standard device Download PDFInfo
- Publication number
- CN206074091U CN206074091U CN201620976475.9U CN201620976475U CN206074091U CN 206074091 U CN206074091 U CN 206074091U CN 201620976475 U CN201620976475 U CN 201620976475U CN 206074091 U CN206074091 U CN 206074091U
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- support stand
- piston
- slide block
- slide
- rear support
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Abstract
This utility model is related to the liquid flow standard device technical field for detection stream gauge，Especially a kind of two-way active piston liquid flow standard device，Including a front support stand and a rear support stand，Between the front support stand and rear support stand, parallel interval is provided with two slide rails，The common slip cap of outer rim of two slide rail is equipped with a slide block，One grating scale is installed between the front support stand and rear support stand，The grating scale is parallel to each other with two slide rails，The slide block side is connected with a PTO，A piston cylinder is installed on the outside of the rear support seat，The end of piston rod is fixedly mounted with the slide block，The piston cylinder two ends are connected with a pressure stabilizing cavity respectively，The outlet of two pressure stabilizing cavity is connected with the two-port of a cross valve respectively，The other two-port of cross valve is connected with water outlet of water tank and water container backwater mouth by pipeline respectively，Flow meters are installed on water container backwater pipeline.
Description
Technical field
This utility model is related to the liquid flow standard device technical field for detection stream gauge, especially a kind of two-direction, main
Dynamic formula piston liquid flow standard device.
Background technology
With the front subjects such as fine chemistry industry, biological medicine, microelectromechanical systems it is rapidly growing, little micro- fluid flow
Measurement demand increasingly increases, and the research of correlation flowmeters and product emerge in large numbers like the mushrooms after rain.Liquid flow standard device is used for
The value of effusion meter is demarcated, and the research and development and application to effusion meter play the effect of key.
Piston flow standard set-up has the advantages that uncertainty grade height, high degree of automation, is usually used in little micrometeor
Metering field, but said apparatus there is also some shortcomings, first, piston cylinder volume is shifting with range of flow, it is difficult to realize
The doulbe-sides' victory of wide-range and cramped construction；Second, the liquid due to can only unidirectionally discharge known volume, therefore long-time cannot be realized
It is continuous to measure.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of compact conformation, range ability are big, can
A kind of two-way active piston liquid flow standard device of the continuous measurement of long-time.
This utility model is achieved through the following technical solutions：
A kind of two-way active piston liquid flow standard device, it is characterised in that：Including after a front support stand and one
Support, between the front support stand and rear support stand, parallel interval is provided with two slide rails, each slip cap of outer rim of two slide rail
Equipped with a slide block, a grating scale is installed between the front support stand and rear support stand, the grating scale is parallel to each other with two slide rails,
The slide block is located at the correspondence position above grating scale and is provided with a grating ruler reading head, and it is defeated that the slide block side is connected with a power
Go out device, the PTO can move back and forth along two guide rails with movable slider, be provided with the outside of the rear support seat
One piston cylinder, the piston rod that the piston cylinder is installed are parallel with two slide rails, and the end of the piston rod is fixedly mounted with the slide block,
Two parts are divided into by piston inside the piston cylinder, the two parts are connected with a pressure stabilizing cavity respectively, two pressure stabilizing cavity
Outlet is connected with a side end of a pipeline respectively, the end side of two pipeline two-port phase respectively with a cross valve
Connection, the other two-port of the cross valve have been respectively communicated with a radiator drain and a water container backwater pipe, the radiator drain
It is connected with a water tank with the end side of water container backwater pipe, connection on the water container backwater pipeline is provided with a flow
Meter.
And, the PTO includes a servomotor and a ball-screw, the front support stand and rear support
Be provided between frame one parallel to two slide rails ball-screw, the ball-screw be located at front support stand in end and the servo
The outfan of motor is connected, and the outer rim of the ball-screw is set with the upper of a feed screw nut, two slide block and feed screw nut
End is fixedly mounted with the lower surface of a slide unit, and the upper surface of the slide unit is provided with a piston rod fixture, the piston rod fixture
Fixedly mount with the end of the piston rod, the lower end of the slide unit is mutually installed with the feed screw nut.
And, a proximity switch is separately installed with the end face being oppositely arranged on the inside of the front support stand and rear support stand,
The proximity switch induction end is oppositely arranged with the end face of slide block, and its signal output part is connected with a slave computer, and the slave computer is also
The signal acquisition terminal of grating ruler reading head is connected with, the signal output part of the slave computer is connected with the control of the servomotor
End.
And, the slave computer is connected with the signal output part of a host computer.
Advantage of the present utility model and good effect are：
In this utility model, front support stand and rear support stand coordinate slide rail and slide block, can be past in piston cylinder by piston
Multiple stroke is simulated outside piston cylinder, and slide block is existed with piston rod phase secure fit grating scale and the measurable piston of grating scale probe
Precise displacement amount in piston cylinder, as the internal diameter of piston cylinder is known, therefore is counted by its sectional area and displacement
Can draw the flow of actual outflow after calculation, the flow of the actual outflow compared with the flow measured in effusion meter by draw
Error produced by effusion meter, and the pressure stabilizing cavity that piston cylinder is located at piston both sides is connected with water tank by pipeline, cross valve
Port is capable of achieving the work purpose that device way moving is continuously measured by forming different paths；Servomotor coordinates ball wire
Thick stick and the ball-screw nut mutually installed with slide unit, the motion for slide unit and piston rod provides power, rational in infrastructure；Slide block coordinates
Slide unit and piston fixture are easy to the fixed installation of piston rod and slide block；Proximity switch is the limit in slide block reciprocatory movement
Position, when slide block reaches capacity position, proximity switch phase slave computer exports a signal, and slave computer control servomotor changes and turns
Dynamic direction, so as to change the direction of motion of slide block and piston rod, the now grating ruler reading head pair and grating in slide block
The relative displacement that chi is produced is acquired, and transmits to slave computer；Host computer is used for operator's setting instantaneous delivery point and tires out
Meter flow value calculates the rotating speed and piston displacement of servomotor, and is sent to by slave computer in this, as Setting signal and watch
Motor is taken, promotes piston predetermined distance to be moved according to given speed by the latter so that device is saved by the way of automatically controlling
Less manpower, it is to avoid error or mistake that manual operation or reading are caused.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of backward stroke of the piston state in this utility model；
Fig. 3 is the structural representation of forward piston stroke state in this utility model.
Specific embodiment
This utility model is elaborated below by embodiment, the embodiment is illustrative instead of limiting
, it is impossible to protection domain of the present utility model is limited with this.
A kind of two-way active piston liquid flow standard device, innovation of the present utility model is, including a front support
Frame 2 and a rear support stand 4, between the front support stand and rear support stand, parallel interval is provided with two slide rails 9, two slide rail
The each slip cap of outer rim is equipped with a slide block 8, is provided with a grating scale 10 between the front support stand and rear support stand, the grating scale with
Two slide rails are parallel to each other, and the slide block is located at the correspondence position above grating scale and is provided with a grating ruler reading head 11, the slide block
Side is connected with a PTO, and the PTO can move back and forth along two guide rails with movable slider, it is described after
One piston cylinder 15 is installed on the outside of support base, the piston rod 13 that the piston cylinder is installed is parallel with two slide rails, the piston rod
End is fixedly mounted with the slide block, is divided into two parts by piston inside the piston cylinder, the two parts respectively with a voltage stabilizing
Chamber 16 is connected, and the outlet of two pressure stabilizing cavity is connected with a side end of a pipeline respectively, another side of two pipeline
Portion is connected with the two-port of a cross valve 21 respectively, and the other two-port of the cross valve has been respectively communicated with a radiator drain
22 and the end side of a water container backwater pipe 18, the radiator drain and water container backwater pipe be connected with a water tank 20, it is described
Connection on water container backwater pipe pipeline is provided with flow meters 19, and cross valve control executor 17 is provided with the cross valve.
In the present embodiment, the PTO includes a servomotor 1 and a ball-screw 3, the front support stand
Be provided with and rear support stand between one parallel to two slide rails ball-screw, the outfan of the servomotor can connect deceleration
Machine, the end that the outfan of the reductor is arranged in front support stand with ball-screw are mutually installed, the outer rim set of the ball-screw
Equipped with a feed screw nut 6；In the present embodiment, for ease of the installation and use of device, the bottom of the piston cylinder is provided with a bottom
Seat 14, the base paves the piston rod of piston cylinder to suitable position, the upper end of two slide block and feed screw nut and a slide unit 7
Lower surface fixed installation, the upper surface of the slide unit is provided with a piston rod fixture 12, the piston rod fixture and the work
The end fixed installation of stopper rod, the lower end of the slide unit is mutually installed with the feed screw nut.
In the present embodiment, one is separately installed with the end face being oppositely arranged on the inside of the front support stand and rear support stand and is close to
Switch 5, the proximity switch induction end is oppositely arranged with the end face of slide block, and its signal output part is connected with a slave computer, under this
Position machine is also associated with the signal acquisition terminal of grating ruler reading head, and the signal output part of the slave computer is connected with the servomotor
Control end；The slave computer is connected with the signal output part of a host computer.
The course of work of the present utility model is：
When as shown in Fig. 2 four-way control valve device, control four-way valve core is in location A, the first port of cross valve and
4th port turns on, and second port and the 3rd port turn on, and servomotor promotes piston to carry out process motion, and piston promotes liquid
The 4th ports of Jing and first port enter tested effusion meter, while the liquid in water tank passes through the 3rd port and second port is entered
It is provided with the piston cylinder body of piston rod side；When piston carries out drawback movement as shown in figure 3, four-way control valve device, control
Four-way valve core processed is in B location, the first port of cross valve and second port conducting, the 3rd port and the conducting of the 4th port,
Servomotor pulls piston to carry out drawback movement, and piston promotes liquid Jing first ports and second port to enter effusion meter to be checked,
Liquid in water tank passes through in the cylinder body that the 3rd port and the 4th port are entered on the left of piston cylinder simultaneously, and and so on, piston exists
Move reciprocatingly in piston cylinder, and the medium direction for flowing through tested effusion meter is constant.
When device starts to measure tested effusion meter, instantaneous delivery point and integrated flow value that host computer is set according to user
The rotating speed and piston displacement of servomotor are calculated, and servomotor are sent to by slave computer in this, as Setting signal,
Piston is promoted to move predetermined distance, after off-test, work of the host computer according to optical grating ruler measurement according to given speed by the latter
Plug actual motion distance and piston cylinder sectional area calculate the standard integrated flow that this time test flows through tested effusion meter, by its with
Tested expression value flow-rate ratio compared with, obtain the error of indication, above-mentioned host computer and slave computer can adopt the visible control main frame in market
Or adopt specific control module special.
In this utility model, front support stand and rear support stand coordinate slide rail and slide block, can be past in piston cylinder by piston
Multiple stroke is simulated outside piston cylinder, and slide block is existed with piston rod phase secure fit grating scale and the measurable piston of grating scale probe
Precise displacement amount in piston cylinder, as the internal diameter of piston cylinder is known, therefore is counted by its sectional area and displacement
Can draw the flow of actual outflow after calculation, the flow of the actual outflow compared with the flow measured in effusion meter by draw
Error produced by effusion meter, and the pressure stabilizing cavity that piston cylinder is located at piston both sides is connected with water tank by pipeline, cross valve
Port is capable of achieving the work purpose that device way moving is continuously measured by forming different paths；Servomotor coordinates ball wire
Thick stick and the ball-screw nut mutually installed with slide unit, the motion for slide unit and piston rod provides power, rational in infrastructure；Slide block coordinates
Slide unit and piston fixture are easy to the fixed installation of piston rod and slide block；Proximity switch is the limit in slide block reciprocatory movement
Position, when slide block reaches capacity position, proximity switch phase slave computer exports a signal, and slave computer control servomotor changes and turns
Dynamic direction, so as to change the direction of motion of slide block and piston rod, the now grating ruler reading head pair and grating in slide block
The relative displacement that chi is produced is acquired, and transmits to slave computer；Host computer is used for operator's setting instantaneous delivery point and tires out
Meter flow value calculates the rotating speed and piston displacement of servomotor, and is sent to by slave computer in this, as Setting signal and watch
Motor is taken, promotes piston predetermined distance to be moved according to given speed by the latter so that device is saved by the way of automatically controlling
Less manpower, it is to avoid error or mistake that manual operation or reading are caused.
Claims (4)
1. a kind of two-way active piston liquid flow standard device, it is characterised in that：Including a front support stand and a rear support
Frame, between the front support stand and rear support stand, parallel interval is provided with two slide rails, and the outer rim of two slide rail is respectively slided suit
There is a slide block, a grating scale is installed between the front support stand and rear support stand, the grating scale is parallel to each other with two slide rails, institute
State slide block and one grating ruler reading head is installed positioned at the correspondence position above grating scale, the slide block side is connected with a power output
Device, the PTO can move back and forth along two guide rails with movable slider, be provided with one on the outside of the rear support seat
Piston cylinder, the piston rod that the piston cylinder is installed are parallel with two slide rails, and the end of the piston rod is fixedly mounted with the slide block, institute
State and two parts are divided into by piston inside piston cylinder, the two parts are connected with a pressure stabilizing cavity respectively, two pressure stabilizing cavity goes out
Mouth is connected with a side end of a pipeline respectively, and the end side of two pipeline is connected with the two-port of a cross valve respectively
Connect, the other two-port of the cross valve has been respectively communicated with a radiator drain and a water container backwater pipe, the radiator drain and
The end side of water container backwater pipe is connected with a water tank, and connection on the water container backwater pipeline is provided with flow meters.
2. the two-way active piston liquid flow standard device of one kind according to claim 1, it is characterised in that：It is described dynamic
Power output device includes a servomotor and a ball-screw, be provided between the front support stand and rear support stand one parallel to
The ball-screw of two slide rails, the end that the ball-screw is located in front support stand are connected with the outfan of the servomotor,
The upper end that the outer rim of the ball-screw is set with a feed screw nut, two slide block and feed screw nut is solid with the lower surface of a slide unit
Dingan County fills, and the upper surface of the slide unit is provided with a piston rod fixture, and the piston rod fixture is solid with the end of the piston rod
Dingan County fills, and the lower end of the slide unit is mutually installed with the feed screw nut.
3. the two-way active piston liquid flow standard device of one kind according to claim 2, it is characterised in that：Before described
A proximity switch is separately installed with the end face being oppositely arranged on the inside of bracing frame and rear support stand, the signal of the proximity switch is defeated
Go out end and be connected with a slave computer, the slave computer is also associated with the signal acquisition terminal of grating ruler reading head, the signal of the slave computer
Outfan is connected with the control end of the servomotor.
4. the two-way active piston liquid flow standard device of one kind according to claim 3, it is characterised in that：Under described
Position machine is connected with the signal output part of a host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620976475.9U CN206074091U (en) | 2016-08-29 | 2016-08-29 | A kind of two-way active piston liquid flow standard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620976475.9U CN206074091U (en) | 2016-08-29 | 2016-08-29 | A kind of two-way active piston liquid flow standard device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206074091U true CN206074091U (en) | 2017-04-05 |
Family
ID=58432999
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620976475.9U Active CN206074091U (en) | 2016-08-29 | 2016-08-29 | A kind of two-way active piston liquid flow standard device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211361A (en) * | 2017-06-30 | 2019-01-15 | 江苏威熔液压气动科技有限公司 | A kind of liquid meter precise detection device |
| CN111693106A (en) * | 2020-05-15 | 2020-09-22 | 太原理工大学 | High-pressure high-precision extremely-low dynamic flow measurement test device |
| CN112556765A (en) * | 2019-09-25 | 2021-03-26 | 中国石油天然气股份有限公司 | Reciprocating gas flowmeter and working method thereof |
| CN113686416A (en) * | 2021-09-23 | 2021-11-23 | 河北大学 | Eight-valve piston type dynamic flow metering standard device and metering method |
| CN113758545A (en) * | 2021-09-23 | 2021-12-07 | 河北大学 | Four-valve piston type dynamic flow metering standard device and metering method |
-
2016
- 2016-08-29 CN CN201620976475.9U patent/CN206074091U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211361A (en) * | 2017-06-30 | 2019-01-15 | 江苏威熔液压气动科技有限公司 | A kind of liquid meter precise detection device |
| CN112556765A (en) * | 2019-09-25 | 2021-03-26 | 中国石油天然气股份有限公司 | Reciprocating gas flowmeter and working method thereof |
| CN111693106A (en) * | 2020-05-15 | 2020-09-22 | 太原理工大学 | High-pressure high-precision extremely-low dynamic flow measurement test device |
| CN113686416A (en) * | 2021-09-23 | 2021-11-23 | 河北大学 | Eight-valve piston type dynamic flow metering standard device and metering method |
| CN113758545A (en) * | 2021-09-23 | 2021-12-07 | 河北大学 | Four-valve piston type dynamic flow metering standard device and metering method |
| CN113686416B (en) * | 2021-09-23 | 2023-08-08 | 河北大学 | Eight-valve piston type dynamic flow metering standard device and metering method |
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