CN205937961U - Gas flow stabilizing device - Google Patents
Gas flow stabilizing device Download PDFInfo
- Publication number
- CN205937961U CN205937961U CN201620924649.7U CN201620924649U CN205937961U CN 205937961 U CN205937961 U CN 205937961U CN 201620924649 U CN201620924649 U CN 201620924649U CN 205937961 U CN205937961 U CN 205937961U
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- Prior art keywords
- fixing
- valve element
- steel pipe
- alloy steel
- element ring
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- 230000000087 stabilizing effect Effects 0.000 title abstract 2
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 63
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000010959 steel Substances 0.000 claims abstract description 4
- 239000003381 stabilizer Substances 0.000 claims description 31
- 239000010935 stainless steel Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract 3
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229960001866 silicon dioxide Drugs 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 5
- 238000011105 stabilization Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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- Pipeline Systems (AREA)
Abstract
The utility model discloses a gas flow stabilizing device, include: the fastener is connected to the air supply, and the flexible alloy steel pipe of fastener sealing connection is connected to the air supply, annular case retainer plate is connected fastener relatively fixed with the air supply and is connected, and its circumference is provided with the first perforation and the second of mutual disposition and bores a hole, hollow screw adjusting assembly pole, with second perforation screw -thread fit, elasticity alloy steel pipe is the axially extending bore of first perforation and screw adjusting assembly pole in proper order, be located two pinch rollers of elasticity alloy steel pipe both sides, the periphery of pinch roller contacts screw adjusting assembly pole position in one end butt in the periphery of two pinch rollers of case retainer plate inner circle with elasticity alloy steel pipe's outer wall and case retainer plate inner wall. During the use, rotating screw adjusting assembly pole and relative case retainer plate screw in or screwing out, two pinch rollers then extrude elasticity alloy steel pipe and make it the cross section and change to the control of gases velocity of flow. Steel pipe cross section continuous variation, consequently, its dead volume is very little, but gas flow continuously adjustable, rapid and degree of the replacement height of gaseous replacement.
Description
Technical field
This utility model is related to gas flow control technology field, more particularly, to a kind of gas constant-current stabilizer.
Background technology
When analyzing gaseous sample, when especially to gas componant value accurate quantitative analysis, generally to strictly control collected
Gaseous sample flow velocity stability.The flow velocity fluctuation size of sample gas directly affects precision of analysis.At present, exist
In gas analyses laboratory category, the gas flow straightener that the control of gas flow rate is used has needle-valve, diaphragm valve and quality stream
Gauge etc..But these gas flow straighteners have the characteristics that one common it is simply that there is larger dead volume in valve internal structure
(0.01ml～1ml).In this case when analyzing the gaseous sample of different medium, thorough due to displacement, often to point
Analysis result produces interference.
Therefore, how to provide that a kind of dead volume is little, displacement thoroughly gas constant-current stabilizer, be that those skilled in the art are current
The technical issues that need to address.
Utility model content
The purpose of this utility model is to provide that a kind of dead volume is little, displacement thoroughly gas constant-current stabilizer.
In order to solve the above problems, this utility model provides technical scheme below：
A kind of gas constant-current stabilizer, including：
For connecting the source of the gas connection card of source of the gas, described source of the gas connection card is sealedly connected with elastic alloy steel pipe；
The valve element ring for fixing of loop configuration, described valve element ring for fixing be circumferentially provided with first perforation positioned opposite and the
Two perforation, described valve element ring for fixing is relatively fixed with described source of the gas connection card by fixing device and is connected；
Adjustable diameter and screw adjusting bar, described adjustable diameter and screw adjusting bar is hollow structure and outside and described second perforated thread cooperation, described
Elastic alloy steel pipe sequentially passes through the first perforation of described valve element ring for fixing and the axially extending bore of described adjustable diameter and screw adjusting bar；
Positioned at two pinch rollers of described elastic alloy steel pipe both sides, the periphery of described pinch roller and described elastic alloy steel pipe
Outer wall and the contact internal walls of described valve element ring for fixing, one end that described adjustable diameter and screw adjusting bar is located at described valve element ring for fixing inner ring abuts
Periphery in two described pinch rollers.
Preferably, in above-mentioned gas constant-current stabilizer, described fixing device is to be looped around outside described valve element ring for fixing
The valve body fixed mount of loop configuration, described valve body fixed mount is provided with fixing hole and use for fixing described source of the gas connection card
In the adjustment hole running through for described adjustable diameter and screw adjusting bar, it is solid that described valve element ring for fixing is fixed on described valve body by rotary limit device
Determine the inner ring of frame.
Preferably, in above-mentioned gas constant-current stabilizer, described adjustment hole is coordinated with described adjustable diameter and screw adjusting bar periphery screw thread, institute
State rotary limit device to include positioned at limiting card that is described valve element ring for fixing both sides and being fixed on described valve body fixed mount inwall
Plate, described spacing clamp is connected and fixed with the periphery of described valve element ring for fixing to limit the upset of described valve element ring for fixing.
Preferably, in above-mentioned gas constant-current stabilizer, described valve element ring for fixing is cirque structure, described first perforation
Axis and described biperforate dead in line and the center of circle through described valve element ring for fixing.
Preferably, in above-mentioned gas constant-current stabilizer, described pinch roller is cylindrical structure, and the axis of described pinch roller and institute
State valve element ring for fixing diameter parallel arrangement, described adjustable diameter and screw adjusting bar be located at described valve element ring for fixing inner ring one end be provided with for
Abut the extruding contact of described pinch roller, the position that described extruding contact is abutted with described pinch roller is circular arc wire shaped.
Preferably, in above-mentioned gas constant-current stabilizer, described adjustable diameter and screw adjusting bar is located at outside described valve element ring for fixing
End is provided with regulation handle.
Preferably, in above-mentioned gas constant-current stabilizer, the end abutment of the side of described pinch roller and described adjustable diameter and screw adjusting bar
And it is provided with elastic cushion block between opposite side and described valve element ring for fixing inwall.
Preferably, in above-mentioned gas constant-current stabilizer, described source of the gas connection card is fixedly connected with cutting ferrule, described cutting ferrule with
Described elastic alloy steel pipe sealing connects.
Preferably, in above-mentioned gas constant-current stabilizer, the end seal of described elastic alloy steel pipe is welded with stainless steel tube,
Described elastic alloy steel pipe is tightly connected with described cutting ferrule by described stainless steel tube.
Preferably, in above-mentioned gas constant-current stabilizer, the internal diameter of described elastic alloy steel pipe is 0.3mm.
The gas constant-current stabilizer that this utility model provides, including：
For connecting the source of the gas connection card of source of the gas, source of the gas connection card is sealedly connected with elastic alloy steel pipe；
The valve element ring for fixing of loop configuration, first perforation and second positioned opposite that is circumferentially provided with of valve element ring for fixing is worn
Hole, valve element ring for fixing is relatively fixed with source of the gas connection card by fixing device and is connected；
Adjustable diameter and screw adjusting bar, adjustable diameter and screw adjusting bar is hollow structure and outside and the second perforated thread cooperation, elastic alloy steel pipe
Sequentially pass through the first perforation of valve element ring for fixing and the axially extending bore of adjustable diameter and screw adjusting bar；
Positioned at two pinch rollers of elastic alloy steel pipe both sides, the periphery of pinch roller is solid with the outer wall of elastic alloy steel pipe and valve element
The contact internal walls of fixed circle, adjustable diameter and screw adjusting bar is connected to the periphery of two pinch rollers positioned at one end of valve element ring for fixing inner ring.
Operation principle of the present utility model is as follows：Gas flows through from elastic alloy steel pipe, rotating screw adjusting rod, spiral
Adjusting rod axially opposed valve element ring for fixing is threaded in or out moving, and the end of adjustable diameter and screw adjusting bar is then connect with two pinch roller extruding
Touch, meanwhile, two pinch rollers are subject to the position-limiting action of valve element ring for fixing inwall.Two pinch rollers are with the squeezing action of adjustable diameter and screw adjusting bar
Close to each other or away from thus compression or loosen extruding to elastic alloy steel pipe, elastic alloy steel pipe is squeezed the big of degree
The little shapes and sizes changing cross section in pipe, different cross sections determines gas and passes through gas flow rate when this section.
This programme changes to control the gas flow rate by its section using the cross section of elastic alloy steel pipe, due to elasticity
The internal cross-sectional area of alloy pipe is continually varying, therefore, its dead volume very little, and gas flow continuously adjustable is different
The gaseous sample displacement of medium is rapid and degree of exchange is high.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise not paying creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the gas constant-current stabilizer in this utility model specific embodiment.
In Fig. 1：
1- adjustable diameter and screw adjusting bar, 2- valve body fixed mount, 3- extruding contact, 4- pinch roller, 5- silicagel pad, 6- stainless steel tube, 7- card
Gas after set, 8- elastic alloy steel pipe, 9- valve element ring for fixing, the spacing clamp of 10-, 11- steady pin, 12- clamping track, 13- current stabilization
Body canal, 14- regulation handle, 15- source of the gas connection card.
Specific embodiment
Core of the present utility model is to provide that a kind of dead volume is little, displacement thoroughly gas constant-current stabilizer.
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
Refer to Fig. 1, Fig. 1 is the structural representation of the gas constant-current stabilizer in this utility model specific embodiment.
In a kind of specific embodiment scheme, this utility model provides a kind of gas constant-current stabilizer, including：
For connecting the source of the gas connection card 15 of source of the gas, source of the gas connection card 15 is sealedly connected with elastic alloy steel pipe 8；
The valve element ring for fixing 9 of loop configuration, positioned opposite first that be circumferentially provided with of valve element ring for fixing 9 is bored a hole and second
Perforation, valve element ring for fixing 9 is relatively fixed with source of the gas connection card 15 by fixing device and is connected；
Adjustable diameter and screw adjusting bar 1, adjustable diameter and screw adjusting bar 1 is hollow structure and outside and the second perforated thread cooperation, elastic alloy steel
Pipe 8 sequentially passes through the first perforation of valve element ring for fixing 9 and the axially extending bore of adjustable diameter and screw adjusting bar 1；
Positioned at two pinch rollers 4 of elastic alloy steel pipe 8 both sides, the outer wall of the periphery of pinch roller 4 and elastic alloy steel pipe 8 and valve
The contact internal walls of core ring for fixing 9, one end that adjustable diameter and screw adjusting bar 1 is located at valve element ring for fixing 9 inner ring is connected to the outer of two pinch rollers 4
Week.
Wherein, elastic alloy steel pipe 8 is the pipe that supplied gas are passed through, and is the critical piece controlling gas flow rate.Valve element
Ring for fixing 9, adjustable diameter and screw adjusting bar 1 and two pinch rollers 4 are three main portions of the cross section for changing elastic alloy steel pipe 8
Part, the relative movement using adjustable diameter and screw adjusting bar 1 and valve element ring for fixing 9 extrudes two pinch rollers 4, so that two pinch rollers 4 are mutual
Closer or far from, and then compress or loosen the elastic alloy steel pipe 8 being clipped in the middle of two pinch rollers 4, to change elastic alloy steel pipe
8 cross section.
Operation principle of the present utility model is as follows：Gas flows through from elastic alloy steel pipe 8, rotating screw adjusting rod 1, spiral shell
Tune the axially opposed valve element ring for fixing 9 of pole 1 to be threaded in or out moving, the end of adjustable diameter and screw adjusting bar 1 then with two pinch rollers 4
Extruding contact, meanwhile, two pinch rollers 4 are subject to the position-limiting action of valve element ring for fixing 9 inwall.Two pinch rollers 4 are with adjustable diameter and screw adjusting bar 1
Squeezing action close to each other or away from thus compression or loosen extruding to elastic alloy steel pipe 8, elastic alloy steel pipe 8 is subject to
The size of extruding degree changes the shapes and sizes of cross section in pipe, and different cross sections determines gas and passes through when this section
Gas flow rate.Gas after stable gas conduit 13 after current stabilization is derived.
This programme changes to control the gas flow rate by its section using the cross section of elastic alloy steel pipe 8, due to bullet
The internal cross-sectional area of property alloy pipe 8 is continually varying, therefore, its dead volume very little, gas flow continuously adjustable, no
Gaseous sample displacement with medium is rapid and degree of exchange is high.
It should be noted that valve element ring for fixing 9 can pass through fixing device and the source of the gas connection card of multiple structural forms
15 are relatively fixed connection, for example, can be welded and fixed by connecting rod, or limit both relative motioies by stopping means
Etc..Preferably, the fixing device in this programme is to be looped around the valve body fixed mount 2 of the loop configuration outside valve element ring for fixing 9,
Valve body fixed mount 2 is provided with the fixing hole for fixed gas source connection card 15 and the regulation for running through for adjustable diameter and screw adjusting bar 1
Hole, valve element ring for fixing 9 is fixed on the inner ring of valve body fixed mount 2 by rotary limit device.Specifically, source of the gas connection card 15 is solid
Surely it is arranged in the fixing hole of valve body fixed mount 2, adjustable diameter and screw adjusting bar 1 passes through the adjustment hole of valve body fixed mount 2, valve element ring for fixing 9
Just valve body fixed mount 2 inner ring can be fixed on by rotary limit device, it is achieved thereby that valve element ring for fixing 9 is connected card with source of the gas
Part 15 be relatively fixed connection.
It should be noted that above-mentioned rotary limit device can also have multiple structural forms, for example, fixed by pin, or
Person is by standoff features fixation etc. it is preferable that the rotary limit device in this programme is included positioned at valve element ring for fixing 9 both sides
And spacing clamp 10 that be fixed on valve body fixed mount 2 inwall, the periphery of spacing clamp 10 and valve element ring for fixing 9 connect and fix with
Limit the upset of valve element ring for fixing 9 valve body fixed mount 2 relatively.Specifically, the outer ring of valve element ring for fixing 9 can be provided with annular
Groove, is provided with the clamping track 12 for being engaged by clamping with annular groove, the clamping track 12 of both sides on spacing clamp 10
Ensure that valve element ring for fixing 9 can not rotate relative to valve body fixed mount 2.Meanwhile, the adjustment hole of valve body fixed mount 2 and spiral are adjusted
The periphery screw thread cooperation of pole 1, is arranged such, due to adjustable diameter and screw adjusting bar 1 all with valve element ring for fixing 9 and valve body fixed mount 2 screw thread
It is connected, during rotating screw adjusting rod 1, valve element ring for fixing 9 and valve body fixed mount 2 all can not rotate, therefore,
The flight pitch of the adjustable diameter and screw adjusting bar 1 between valve element ring for fixing 9 and valve body fixed mount 2 is fixing, that is, ensure that valve element is fixed
Circle 9 is fixing axially with respect to valve body fixed mount 2 along adjustable diameter and screw adjusting bar 1, and then ensure that valve element ring for fixing 9 is connected with source of the gas
Fastener 15 be relatively fixed connection.
It should be noted that above-mentioned spacing clamp 10 can be fixed on the inside of valve body fixed mount 2 by steady pin 11, when
So, spacing clamp 10 can also be fixed on valve body fixed mount 2 by buckle or other locking devices by those skilled in the art
Inner ring.
It should be noted that the valve element ring for fixing 9 in this programme can be annular, oval ring or other ring junctions
Structure it is preferable that the valve element ring for fixing 9 in this specific embodiment scheme is cirque structure, wear by the axis and second of the first perforation
The dead in line in hole and pass through the center of circle of valve element ring for fixing 9 that is to say, that the first perforation and the biperforate is centrally located at valve
The two ends of one diameter of the circumference of core ring for fixing 9, are arranged such, and elastic alloy steel pipe 8 can be made right along valve element ring for fixing 9
Claim line to pass through, make two pinch rollers 4 be symmetrically distributed in the both sides of elastic alloy steel pipe 8 it is ensured that two pinch rollers 4 apply equal extruding
Power, also easily facilitates processing and manufacturing and assembling.
It should be noted that the pinch roller 4 in this programme can be cylinder, Elliptic Cylinder or other column structures, preferably
Ground, the pinch roller 4 in this specific embodiment scheme is cylindrical structure, and the diameter parallel of the axis of pinch roller 4 and valve element ring for fixing 9
Arrangement, as shown in figure 1, the both sides of elastic alloy steel pipe 8 are symmetrically distributed with the cylindrical pinch roller 4 of two structure identicals, cylinder
The pinch roller 4 of body structure is easy to be rolled in the inner ring of valve element ring for fixing 9, and then is easy to apply extruding to elastic alloy steel pipe 8
Power.Adjustable diameter and screw adjusting bar 1 is provided with the extruding contact 3 for abutting pinch roller 4 positioned at one end of valve element ring for fixing 9 inner ring, extrudes contact 3
The position abutting with pinch roller 4 is circular arc wire shaped, can continuously contact and slide, gas flow continuously adjustable.The contact of circular arc
Position can make extruding contact 3 play, when extruding pinch roller 4, the effect that buffering pushes, thus slowly extruding elastic alloy steel pipe 8,
Gas flow rate not only can steadily be changed, and the Flexible use life-span of elastic alloy steel pipe 8 can be safeguarded.Generally,
Extruding contact 3 departs from when the contact of pinch roller 4, and this two pinch rollers 4 are in the centre position of valve element ring for fixing 9 inner side, and this is right
The vertical center line of pinch roller 4 is coincided with the inner vertical centrage of valve element ring for fixing 9.
Preferably, one end that adjustable diameter and screw adjusting bar 1 is located at outside valve element ring for fixing 9 is additionally provided with regulation handle 14, by adjusting
Section handle 14 can more easily rotating screw adjusting rod 1.It is highly preferred that this programme can also be outside valve element ring for fixing 9
It is provided for the retaining mechanism of the position of locking screw adjusting rod 1, to be ensured steady air current in same flow rate regime with this.
Preferably, the end abutment of the side of pinch roller 4 and adjustable diameter and screw adjusting bar 1 and opposite side and valve element ring for fixing 9 inwall it
Between be provided with elastic cushion block, elastic cushion block can extrude contact 3 rollback when, pinch roller 4 is bounce back into loosen elastic alloy steel in time
The position of pipe 8, improves the sensitivity adjusting.Preferably, elastic cushion block preferentially selects the silicagel pad 5 of hard, certainly, this area skill
Art personnel can also select the elastic cushion block of other materials, and here is omitted.
For the ease of connecting elastic alloy steel pipe 8 it is preferable that this programme is also fixedly connected with card in source of the gas connection card 15
Set 7, cutting ferrule 7 is tightly connected with elastic alloy steel pipe 8.As shown in figure 1, cutting ferrule 7 is also relatively fixed with valve body fixed mount 2 being connected.
Preferably, cutting ferrule 7 is stainless steel.
Preferably, the also seal weld of the end of elastic alloy steel pipe 8 is connected to stainless steel tube 6, and elastic alloy steel pipe 8 passes through this not
Rust steel pipe 6 is tightly connected with cutting ferrule 7.The effect of stainless steel tube 6 is to guide gas out in source of the gas connection card 15 to bullet
In property alloy pipe 8, be equivalent to gas conduit, another effect is easy for being connected with cutting ferrule 7.
The installation process of this gas constant-current stabilizer is described below：
First, the clamping track 12 of the groove of valve element ring for fixing 9 outer ring and spacing clamp 10 is engaged by clamping, then, leads to
Cross the inner side that spacing clamp 10 is fixed on valve body fixed mount 2 by steady pin 11.By adjustable diameter and screw adjusting bar 1 from the tune of valve body fixed mount 2
Knothole screws in, until be screwed into the inner ring of valve element ring for fixing 9 by the second perforation, adjustable diameter and screw adjusting bar 1 is located at outside valve body fixed mount 2
The one end in portion connects regulation handle 14, and the stainless steel tube 6 after being welded and elastic alloy steel pipe 8 are tightly connected with cutting ferrule 7, and
Sequentially pass through the fixing hole of valve body fixed mount 2, the first of valve element ring for fixing 9 is bored a hole, the axially extending bore of adjustable diameter and screw adjusting bar 1, until
Pass the centre bore of regulation handle 14, the end of elastic alloy steel pipe 8 is connected with gas conduit 13 after current stabilization, finally, by a pair
Pinch roller 4 is pressed in the both sides up and down of elastic alloy steel pipe 8, is set in the inner ring of valve element ring for fixing 9.A pair of silicagel pad 5 is bumped into pinch roller 4
And valve element ring for fixing 9 between, regulate elastic alloy steel pipe 8 after the accurate location in valve element ring for fixing 9, fasten cutting ferrule 7, just
Can start working.
In a specific embodiment scheme, the above material of each part and dimensions can be by following articles
Described it is configured：Adjustable diameter and screw adjusting bar 1 can select Hardmetal materials；Valve body fixed mount 2 can select aluminum circular ring structure,
Its external diameter 41.8mm, internal diameter 36mm, thickness 12mm；Extruding contact 3 can select aluminum material；Pinch roller 4 is the aluminum of a diameter of 8mm
Matter cylinder；Elastic cushion block selects the silicagel pad 5 of hard elastic, and the silicagel pad of specially bar shaped is rolled into a roll structure；Rustless steel
The external diameter 1.58mm of pipe 6, internal diameter 0.5mm；The external diameter 0.79mm of elastic alloy steel pipe 8, internal diameter 0.3mm；Valve element ring for fixing 9 is aluminum
Matter circular ring structure, external diameter 22.75mm, internal diameter 16.6mm, thickness is 9.8mm.Above-mentioned each component specification is only a kind of preferred version,
Certainly, those skilled in the art can also arrange other specifications.
It should be noted that the stroke of propulsion of extruding contact 3 is relevant with the elastic size of elastic alloy steel pipe 8, ability
Field technique personnel can make elastic alloy steel pipe 8 from the elastic alloy material of unlike material it is preferable that this programme is selected
Can replica grade be the elastic alloy Steel material of ten thousand grades making elastic alloy steel pipe 8.The dead volume of this device and elasticity
The diameter of alloy pipe 8 is about it is preferable that the internal diameter of elastic alloy steel pipe 8 in this programme is 0.3mm, subtracting further
Little dead volume.In addition, in order to reduce dead volume further, in elastic alloy steel pipe 8 is connected by this programme with stainless steel tube 6
Carry out seamlessly transitting process at wall, the more high then dead volume of smoothness is less.
The gas constant-current stabilizer that this utility model provides is mainly used in laboratory and adopts analytical tool to gas sample constituents
Control to gaseous sample collection capacity during analysis, uses typically in the range of the gas current stabilization less than 200ml, certainly, is also suitable
In gas Flowrate Control Systems such as other strict electronics industry controlling gas flow, analytical tool, scientific researches.This gas current stabilization fills
Put and be totally different from existing flow straightener, its structure is simple, dead volume is less than 0.2 μ L, the gaseous sample displacement of different medium is fast
Fast and thorough.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or new using this practicality
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The wide scope consistent with features of novelty.
Claims (10)
1. a kind of gas constant-current stabilizer is it is characterised in that include：
For connecting the source of the gas connection card (15) of source of the gas, described source of the gas connection card (15) is sealedly connected with elastic alloy steel pipe
(8)；
The valve element ring for fixing (9) of loop configuration, described valve element ring for fixing (9) be circumferentially provided with first perforation positioned opposite and
Second perforation, described valve element ring for fixing (9) is relatively fixed with described source of the gas connection card (15) by fixing device and is connected；
Adjustable diameter and screw adjusting bar (1), described adjustable diameter and screw adjusting bar (1) is hollow structure and outside and described second perforated thread cooperation, institute
State elastic alloy steel pipe (8) and sequentially pass through the first perforation of described valve element ring for fixing (9) and the axial direction of described adjustable diameter and screw adjusting bar (1)
Through hole；
Positioned at two pinch rollers (4) of described elastic alloy steel pipe (8) both sides, the periphery of described pinch roller (4) and described elastic alloy
The outer wall of steel pipe (8) and the contact internal walls of described valve element ring for fixing (9), described adjustable diameter and screw adjusting bar (1) is fixed positioned at described valve element
One end of circle (9) inner ring is connected to the periphery of two described pinch rollers (4).
2. gas constant-current stabilizer according to claim 1 is it is characterised in that described fixing device is to be looped around described valve element
The valve body fixed mount (2) of the outside loop configuration of ring for fixing (9), described valve body fixed mount (2) is provided with for fixing described source of the gas
The fixing hole of connection card (15) and the adjustment hole for running through for described adjustable diameter and screw adjusting bar (1), described valve element ring for fixing (9)
It is fixed on the inner ring of described valve body fixed mount (2) by rotary limit device.
3. gas constant-current stabilizer according to claim 2 is it is characterised in that described adjustment hole and described adjustable diameter and screw adjusting bar
(1) periphery screw thread cooperation, described rotary limit device include positioned at described valve element ring for fixing (9) both sides and be fixed on described valve
The spacing clamp (10) of body fixed mount (2) inwall, described spacing clamp (10) is solid with the periphery clamping of described valve element ring for fixing (9)
The fixed upset with the described valve element ring for fixing (9) of restriction.
4. gas constant-current stabilizer according to claim 1 is it is characterised in that described valve element ring for fixing (9) is tied for annular
Structure, the axis of described first perforation and described biperforate dead in line and the center of circle through described valve element ring for fixing (9).
5. gas constant-current stabilizer according to claim 4 is it is characterised in that described pinch roller (4) is cylindrical structure, and institute
State the axis of pinch roller (4) and the diameter parallel arrangement of described valve element ring for fixing (9), described adjustable diameter and screw adjusting bar (1) is located at described valve
One end of core ring for fixing (9) inner ring is provided with the extruding contact (3) for abutting described pinch roller (4), described extruding contact (3) and institute
Stating the position that pinch roller (4) abuts is circular arc wire shaped.
6. gas constant-current stabilizer according to claim 1 is it is characterised in that described adjustable diameter and screw adjusting bar (1) is located at described valve
The outside one end of core ring for fixing (9) is provided with regulation handle (14).
7. gas constant-current stabilizer according to claim 1 is it is characterised in that the side of described pinch roller (4) and described spiral
It is provided with elastic cushion block between the end abutment of adjusting rod (1) and opposite side and described valve element ring for fixing (9) inwall.
8. gas constant-current stabilizer according to claim 1 is it is characterised in that described source of the gas connection card (15) is fixedly connected
There is cutting ferrule (7), described cutting ferrule (7) is tightly connected with described elastic alloy steel pipe (8).
9. gas constant-current stabilizer according to claim 8 is it is characterised in that the end of described elastic alloy steel pipe (8) is close
Soldering and sealing is connected to stainless steel tube (6), and described elastic alloy steel pipe (8) passes through described stainless steel tube (6) with described cutting ferrule (7) sealing even
Connect.
10. gas constant-current stabilizer according to any one of claim 1 to 9 is it is characterised in that described elastic alloy steel pipe
(8) internal diameter is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924649.7U CN205937961U (en) | 2016-08-23 | 2016-08-23 | Gas flow stabilizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620924649.7U CN205937961U (en) | 2016-08-23 | 2016-08-23 | Gas flow stabilizing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205937961U true CN205937961U (en) | 2017-02-08 |
Family
ID=57951656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620924649.7U Active CN205937961U (en) | 2016-08-23 | 2016-08-23 | Gas flow stabilizing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205937961U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352109A (en) * | 2016-08-23 | 2017-01-25 | 国网重庆市电力公司电力科学研究院 | Air flow stabilizing method and air flow stabilizing device |
| CN109258556A (en) * | 2018-11-26 | 2019-01-25 | 南安冠玲工业设计有限公司 | A kind of aquaculture pure oxygen supply equipment being pressurized using dual rotation and spray |
-
2016
- 2016-08-23 CN CN201620924649.7U patent/CN205937961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352109A (en) * | 2016-08-23 | 2017-01-25 | 国网重庆市电力公司电力科学研究院 | Air flow stabilizing method and air flow stabilizing device |
| CN109258556A (en) * | 2018-11-26 | 2019-01-25 | 南安冠玲工业设计有限公司 | A kind of aquaculture pure oxygen supply equipment being pressurized using dual rotation and spray |
| CN109258556B (en) * | 2018-11-26 | 2020-07-10 | 绍兴市达冷肯生物科技有限公司 | Aquaculture pure oxygen supply equipment utilizing double rotation and spray pressurization |
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