CN101968371A - Spiral tube micrometer element and micrometer device containing same - Google Patents
Spiral tube micrometer element and micrometer device containing same Download PDFInfo
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- CN101968371A CN101968371A CN 201010268719 CN201010268719A CN101968371A CN 101968371 A CN101968371 A CN 101968371A CN 201010268719 CN201010268719 CN 201010268719 CN 201010268719 A CN201010268719 A CN 201010268719A CN 101968371 A CN101968371 A CN 101968371A
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Abstract
The invention provides a spiral tube micrometer element and a micrometer device containing the element. A tube body is arranged along a cylindrical spiral track line with equal screw pitch and equal spiral encircling radius and is fixed to become a spiral encircling spiral tube, liquid or a wire rope which is limited by a tube cavity thereof and is adapted to the cylindrical spiral track line with the equal screw pitch is arranged in the spiral tube in a matching mode, the peripheral wall of the wire rope is in clearance fit with the inner periphery wall of the spiral tube, and the wire rope is in moving matching with the inner periphery wall of the spiral tube. The invention has reasonable structure and can greatly enhance the accuracy of the material level variation.
Description
Technical field
The present invention relates to significantly to improve the enlarger of physics analog quantity numerical precision to be measured, belong to the micrometer device that mechanism is connected in the device, particularly spiral pipe micrometer element between measuring sonde end and the sensing output terminal and contains this element.
Background technology
At present, most of micrometering amount devices all are along traditional straight line thing position variable quantity liquid level or displacement of the lines, its resolution is limited, measuring accuracy is not high, especially in scientific research field, the test bit that causes relying on the basic physics measured value to carry out subsequent calculations deviates from its actual value far away, fail it is controlled in the deviation range of permission, also just can't guarantee the accuracy and the reliability of follow-up measurement scientific research data, do not meet the condition of a large amount of scientific research and testing, make follow-up scientific research data lose meaning, also lost the basis of actual measurement.
Summary of the invention
The object of the present invention is to provide a kind of spiral pipe micrometer element, it is rational in infrastructure, can significantly improve the precision of thing position variable quantity.
The object of the present invention is achieved like this: a kind of spiral pipe micrometer element, body is along the cylindrical screw trajectory setting of spiral surrounding radius r such as constant pitch d and make it fixedly become the spiral pipe of spiral surrounding, be equipped with liquid in this spiral pipe or be equipped with the silk rope that is subjected to the constraint of its tube chamber and adapts with its constant pitch cylindrical screw trajectory, the internal perisporium clearance fit of silk rope periphery wall and spiral pipe, the inner tubal wall of this rope and spiral pipe movingly.
The present invention also aims to provide the following micrometer device that contains this spiral pipe micrometer element, as follows respectively:
A kind of level gauging container that comprises this spiral pipe micrometer element can significantly improve the degree of accuracy of its level gauging.
The purpose of this invention is achieved in that a kind of level gauging container that comprises this spiral pipe micrometer element, comprise liquid container, the lower end mouth of pipe of spiral pipe micrometer element connects the connected entrance of liquid container bottom wall by linker, the scale that extends along its body hand of spiral is being set on the spiral pipe micrometer element outer tube wall, and the relative surface level of central axis of spiral pipe micrometer element vertically is provided with.
A kind of liquid pressure measurement container that comprises this spiral pipe micrometer element, can significantly improve hydraulic pressure in the liquid strong precision.
The purpose of this invention is achieved in that a kind of liquid pressure measurement container that comprises this spiral pipe micrometer element, comprises spherical container, and the lower end mouth of pipe of spiral pipe micrometer element connects the connected entrance of spherical container wall; The scale that extends along its body hand of spiral is being set on the spiral pipe micrometer element outer tube wall; The relative surface level of central axis of spiral pipe micrometer element vertically is provided with.
A kind of bell-jar gas flow meter checking device that includes this spiral pipe micrometer element can significantly improve it by the precision of the flow of school high precision flow standard volume.
The purpose of this invention is achieved in that a kind of bell-jar gas flow meter checking device that includes this spiral pipe micrometer element, comprise the leading block pulley, pedestal, suspension apparatus, compensation mechanism, bell jar, liquid bath and counterweight stone roller, suspension apparatus is by the column that is provided with guide rail, gentle rope of load-bearing suspention and guide roller are formed, in sealing liquid is housed liquid bath match with the bell jar of back-off, the bell jar enclosure wall is provided with graduated scale, the upper guide way roller of installing in both sides, bell jar bottom matches with guide rail, also cooperates on the cover body in the bell jar lower guide way roller is installed; The future thermometer is installed on the bell jar diapire, wireway is being set in liquid bath, the upper end mouth of pipe of wireway stretches into the air storing cavity of bell jar, the cell wall that liquid bath is passed in the lower end of wireway is communicated with the gas piping that is placed on liquid bath, the future tensimeter of measuring near the air pressure bell jar is being installed on the gas piping near the cell wall place of liquid bath, gas piping is communicated with to airduct and gas outlet, the air outlet that is communicated with blower fan to airduct by stop valve, gas outlet is communicated with atmosphere by variable valve and tube coupling, back journey thermometer and back stroke pressure table are being installed on the gas outlet between variable valve and the tube coupling, be equipped with on the tube coupling by the school flowmeter, gentle rope one end is suspended in its affixed load-bearing in bottom of being put up of the bell jar of back-off in midair, described compensation mechanism is a quadrant weight compensating mechanism, the lower end of compensation mechanism is articulated on the fixed base frame, cooperation is walked around above-mentioned with before the level altitude installation, gentle its other end of rope of the load-bearing suspention of back leading block connects the upper end of compensation mechanism, and compensation mechanism hangs bell jar by the gentle rope of above-mentioned load-bearing suspention; Also be fixed with on the back leading block and its reel, the radius r of the wheel body of reel with circular shaft
c, back leading block wheel body radius r
dAnd the mathematical relation that the spiral surrounding radius r of body satisfies is:
And make the gentle rope of load-bearing suspention walk around the radian Rad that contacts with the circumferential wall of its wheel body and form at the back leading block
2The radian Rad that forms with silk rope being walked around contact on sheave or reel with its wheel body circumferential wall
1Identical; Being through its upper end of silk rope in the fixing spiral pipe micrometer element tube is fixed on the bottom surface cell wall in the sheave circumferential groove or is fixed on the reel outer tube wall, the lower end of silk rope is hung and is connected to the counterweight stone roller that matches with bell jar, bell jar rotates by the moving back of the gentle rope band of load-bearing suspention leading block, the silk rope that back leading block makes the rotation of the sheave that install coaxial with it or reel receive upwards to be sling is again furled by sheave that the silk rope of having reeled of hanging oneself needs to fit with the circumferential wall of its wheel body or is furled thread restricting to fit with the outer tube wall of its cylindrical shell and contacting of hanging oneself and has reeled by reel.
The present invention is by to be made up of the spiral pipe of laying with the cylindrical screw trajectory of constant pitch and the liquid or the silk rope that are arranged in the pipe, when liquid level (line length) or silk rope the length generation conversion spiral pipe in of liquid in this spiral pipe, reflect in the length variations of the displacement accuracy that records data in a conventional manner by liquid in the helical tube body or silk rope.Therefore, the present invention is rational in infrastructure, can significantly improve the precision of thing position variable quantity, as directly measuring liquid level or displacement, or the measurement of physical quantitys such as gaging pressure and flow indirectly.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the present invention's (being installed with the silk rope in its helical tube body) the main TV structure synoptic diagram of embodiment 1 on (three-dimensional coordinate) X-Z coordinate plane;
Fig. 2 is the main TV structure synoptic diagram of the present invention's (being provided with liquid in its helical tube body) embodiment 2 on (three-dimensional coordinate) X-Z coordinate plane;
Fig. 3 is projected in perspective view on the X-Y coordinate plane for spiral pipe of the present invention;
Fig. 4 is spiral thread and the corresponding synoptic diagram of the mathematical relation of pitch between the spiral pipe unit of the present invention pitch; Spiral pipe of the present invention is equipped with the sectional structure synoptic diagram of silk rope;
Fig. 5 is equipped with the sectional structure synoptic diagram of liquid for spiral pipe of the present invention;
Fig. 6 is equipped with the sectional structure synoptic diagram of silk rope for spiral pipe of the present invention;
Fig. 7 is applied to the structural representation of level gauging container for the present invention;
Fig. 8 is applied to the structural representation of liquid pressure measurement container for the present invention;
Fig. 9 is applied to the structural representation of bell-jar gas flow meter checking device for the present invention;
Figure 10 is that (among Fig. 9) the present invention is applied to the back leading block and the coaxial structure for amplifying synoptic diagram that installs of reel in the bell-jar gas flow meter checking device;
Figure 11 analyses and observe the structure for amplifying synoptic diagram for back leading block and sheave among Figure 10 with what circular shaft installed;
Figure 12 analyses and observe the structure for amplifying synoptic diagram for back leading block and reel among Figure 10 with what circular shaft installed.
Embodiment
A kind of spiral pipe micrometer element, as shown in Figures 1 to 4, comprise body 2a, body 2a is along the cylindrical screw trajectory setting of spiral surrounding radius r such as constant pitch d and make it fixedly become the spiral pipe of spiral surrounding, be equipped with liquid 3a in this spiral pipe or be equipped with the silk rope 1a that is subjected to the constraint of its tube chamber and adapts with its constant pitch cylindrical screw trajectory, the internal perisporium clearance fit of silk rope 1a periphery wall and spiral pipe, the inner tubal wall of this rope 1a and spiral pipe movingly.Silk rope 1a wherein should satisfy the requirement that can not be subjected to pulling force basically and extend.
As shown in Figure 6, too small and cause capillarity, spiral pipe outer tube diameter Rgw 〉=5mm for fear of caliber.
As Fig. 1, Fig. 3, Fig. 5 and shown in Figure 6, the scale 2k that extends along its body 2a hand of spiral is being set on the spiral pipe outer tube wall; Spiral pipe outer tube diameter Rgw is 6-10mm, silk rope 1a is a solid, the tube wall of spiral pipe is made of clear glass, the ratio (ρ gn/ ρ s) of caliber ρ gn is 0.78-0.94 in the radius ρ s of silk rope 1a xsect and the spiral pipe, and being full of in the perimetrical lumen of the internal perisporium of silk rope 1a periphery wall and spiral pipe has transparent lubricating oil 3b.
Described clear glass is transparent engineering plastics or organic glass or soda-lime glass.
As Fig. 5, shown in Figure 6, in the spiral pipe spiral surrounding radius r of caliber ρ g and spiral pipe ratio (ρ g/r) be 0.15-0.05.
As shown in Figures 1 to 4, if 1 M in space at face of cylinder x
2+ y
2=r
2Upward rotate around axle z with angular velocity omega, rise along the forward that is parallel to the z axle with linear velocity v again simultaneously, the figure of putting the M formation so is called helix.The parametric equation of spiral curve is as follows:
--angle that----spiral curve at the uniform velocity rotates, radian in the formula: θ;
R------spiral (curve) is around radius, unit-Mi;
The velocity coefficient that the k------spiral curve rises, the dimensionless constant;
The pitch of d------spiral curve, unit-Mi;
To θ ∈ [0,2 π] section spiral curve L line length march line integral as can be known:
By on can get:
Therefore, body of the present invention is for turning to spiralling spiral pipe along the spiral curve with above-mentioned feature, when the line length that is full of pipeline section along spiral pipe when liquid or silk rope (flexible, stiff cotton rope) is l, then liquid or silk or rope are a pitch d of unit along the height that z axle (axis that spiral pipe rises) rises, and (being thread) l of the helical trajectory length between the unit pitch and the pitch d of unit relation satisfy
Relation, its ratio be one quantitatively, it has following feature: (1) l and d satisfy one-to-one relationship; (2) l/d " 1, also be that spiral line length (the straight line line length of the one-dimensional space) between the unit pitch of d is exaggerated on the line length (three-dimensional curve line length) that K doubly projects to space curve l.Therefore, when a spiral thread that moves in spiral pipe when liquid or silk rope is h, the thread that then corresponding with it as can be known straight line rises, for the sensitive element (claiming pre-transducer again) that utilizes this principle design to go out is the spiral pipe mircrometer gauge, it can carry out K to the tested non electrical quantity thing position variable signal Δ h (liquid level change or displacement of the lines change) of small scale and doubly amplify conversion in advance, is transformed to the Δ l that large scale is easy to measure.The sensor of being made up of above-mentioned described spiral pipe converter and digital signal metering circuit is spiral pipe micrometer sensor.Therefore, the present invention is rational in infrastructure, can significantly improve the precision of physical simulation numerical value, can carry out the measurement of physical quantitys such as pressure, liquid level, displacement and flow.
Exploitation that the present invention is concrete and application have following several respects:
(1) measurement of liquid level
A kind of level gauging container that includes this spiral pipe micrometer element, as shown in Figure 7, comprise liquid container 5, it is characterized in that: the lower end mouth of pipe of spiral pipe micrometer element 2b connects the connected entrance of liquid container 5 bottom walls by linker 6, the scale 2k that extends along its body 2a hand of spiral is being set on the spiral pipe micrometer element 2b outer tube wall, and the relative surface level of central axis of spiral pipe micrometer element 2b vertically is provided with.
Above-mentioned level gauging container is to utilize that the fluid balance equation is the pressure gauge of principle design in the hydrostatics, graduated tube in traditional liquid column pressure meter is partly or entirely replaced with spiral pipe, then can obtain the scale of an even spiral trend, utilization is contained in the thread variation delta l of the liquid 3a liquid level in spiral pipe in the liquid container 5 and the relation of Δ hw, can make that the very little Δ hw of change amount is measured to come out.
(2) measurement of pressure
A kind of liquid pressure measurement container that includes this spiral pipe micrometer element as shown in Figure 8, comprises spherical container 4, and the lower end mouth of pipe of spiral pipe micrometer element 2b connects the connected entrance of spherical container 4 walls; The scale 2k that extends along its body 2a hand of spiral is being set on the spiral pipe micrometer element 2b outer tube wall; The relative surface level of central axis of spiral pipe micrometer element 2b vertically is provided with.
Aforesaid liquid pressure measurement container is to utilize that the fluid balance equation is the pressure gauge of principle design in the hydrostatics, graduated tube in traditional liquid column pressure meter part is replaced with spiral pipe, then can obtain a rotation scale, utilization is contained in the thread variation delta l of the liquid 3a liquid level in spiral pipe in the spherical container 4 and the relation of Δ hp, Δ hp that can the change amount is very little is measured to come out, can learn certain a bit, hydrostatic pressure at as shown in Figure 8 M point place.
(3) measurement of displacement
Existing liquid column pressure meter is to utilize that the fluid balance equation is the pressure gauge of principle design in the hydrostatics, graduated tube in traditional liquid column pressure meter part is replaced with spiral pipe, then can obtain a rotation scale, though the relation of the thread variation delta l that utilizes fluid column liquid level in spiral pipe and Δ h as can be known the very little variation of Δ h generation also can be measured come out.
(4) measurement of flow
A kind of bell-jar gas flow meter checking device that comprises spiral pipe micrometer element, extremely shown in Figure 12 as Fig. 9, comprise leading block, pedestal 23, suspension apparatus, compensation mechanism 33, bell jar 10, liquid bath 16 and counterweight stone roller 31, suspension apparatus is by the column 12 that is provided with guide rail, load-bearing suspention gentle rope 1b and guide roller 11 are formed, in sealing liquid 22 is housed liquid bath 16 match with the bell jar 10 of back-off, bell jar 10 enclosure wall are provided with graduated scale 13, the upper guide way roller of installing in both sides, bell jar 10 bottom 11 matches with guide rail, also cooperates on the cover body in the bell jar 10 lower guide way roller 15 is installed; On bell jar 10 diapires, future thermometer 13 is installed, wireway 14 is being set in liquid bath 16, the upper end mouth of pipe of wireway 14 stretches into the air storing cavity of bell jar 10, the cell wall that liquid bath 16 is passed in the lower end of wireway 14 is communicated with the gas piping 24 that is placed on liquid bath 16, the future tensimeter 21 of measuring near the air pressure bell jar 10 is being installed on the gas piping 24 near the cell wall place of liquid bath 16, gas piping 24 is communicated with gives airduct 25 and gas outlet 28, be communicated with the air outlet of blower fan 27 for by stop valve 26 airduct 25, gas outlet 28 is communicated with atmosphere by variable valve 17 and tube coupling 29, back journey thermometer 18 and back stroke pressure table 19 are being installed on the gas outlet 28 between variable valve 17 and the tube coupling 29, be equipped with on the tube coupling 29 by school flowmeter 20, gentle rope 1b one end is suspended in bell jar 10 its affixed load-bearing in bottom of being put up of back-off in midair, described compensation mechanism 33 is a quadrant weight compensating mechanism, the lower end of compensation mechanism 33 is articulated on the fixed base frame 32, cooperation is walked around above-mentioned two leading load-bearing to pulley 9 and back leading block 8b of installing with level altitude and is suspended the upper end that gentle its other end of the 1b of rope is connected compensation mechanism 33 in midair, and compensation mechanism 33 hangs bell jar 10 by the gentle 1b that restricts of above-mentioned load-bearing suspention; Also be fixed with on the back leading block 8b and its reel 8a, the radius r of the wheel body 36 of reel 8a with circular shaft
c, back leading block 8b wheel body 35 radius r
dAnd the mathematical relation that the spiral surrounding radius r of body 2a satisfies is:
And make the gentle rope of load-bearing suspention 1b walk around the radian Rad that contacts with the circumferential wall 35a of its wheel body 35 and form at back leading block 8b
2The radian Rad that forms with silk rope 1a being walked around contact on sheave 8a1 or reel 8a2 with its wheel body circumferential wall
1Identical; A bottom surface cell wall 37a that its upper end of rope 1a is fixed in the sheave 8a2 circumferential groove who is through in the fixing spiral pipe micrometer element 2b pipe goes up or is fixed on the reel 8a1 outer tube wall 37b, the lower end of silk rope 1a is hung and is connected to the counterweight stone roller 31 that matches with bell jar 10, bell jar 10 drives back leading block 8b by the gentle rope of load-bearing suspention 1b and rotates, the silk rope 1a that back leading block 8b makes the sheave 8a1 that install coaxial with it or reel 8a2 rotation receive upwards to be sling is again furled by sheave 8a1 that the silk rope 1a that reeled of hanging oneself needs to fit with the circumferential wall 37a of its wheel body 36a or is furled the 1a that thread restricts that reeled of hanging oneself by reel 8a2 and need fit with the outer tube wall 37b of its cylindrical shell 36b and contact.In order to prevent that the gentle rope of load-bearing suspention 1b from skidding on the leading block 8b of back, can on the circumferential wall 35a of back leading block 8b, one deck skid resistant course be set, such as the skid resistant course that constitutes by rubber, on the leading block 8b of back, skid in the time of can preventing after the gentle rope of the load-bearing suspention 1b transmission leading block 8b, avoid measuring the appearance of such measuring error.
As shown in figure 10, described reel 8a is sheave 8a1 or reel 8a2.As Figure 11 and shown in Figure 12, sheave 8a1 is fit to silk rope 1a and twines a circle, and winding makes the stroke of the girth of the silk rope 1a that is wrapped on the sheave 8a1 more than or equal to the upper and lower displacement of bell jar 10 as shown in figure 11 when design.Reel 8a2 is fit to a silk rope 1a and twines a multi-turn, contacts but every circle all must make silk rope 1a fit with the circumferential wall 37b of its cylindrical shell 36b, and can not pile up winding, could guarantee the accuracy of measurement, and winding as shown in figure 12.As shown in Figure 9, below the leading block 8b of back, cooperate a secondary leading block 8c is installed, the gentle rope of the load-bearing suspention 1b that will walk around from leading block 8b upper end, back is from vertically walking around secondary leading block 8c downwards, make the gentle rope of load-bearing suspention 1b one end be fixed in the upper end of compensation mechanism 33 again, suspend load-bearing in midair radian Rad that gentle rope 1b contacts on the leading block 8b of back
2Be set at 90 °, in like manner, silk rope 1a walks around the radian Rad that contacts with its wheel body circumferential wall and form on sheave 8a1 or reel 8a2
1Also respective settings is 90 °, and the rope body that silk rope 1a exposes the spiral pipe micrometer element 2b upper end mouth of pipe is in the state of vertically setting up, and can certainly make Rad
1(=Rad
2) scope of value is 0 °＜Rad
1=Rad
2＜180 °, general Rad
1(=Rad
2) value is 90 °-135 °, by add the way of back leading block in suitable location, as shown in Figure 9, select to protect silk rope 1a and the gentle rope of load-bearing suspention 1b around to, guarantee the gentle rope of silk rope 1a and load-bearing suspention 1b to be fitted in the circumferential wall of the circumferential wall of reel wheel body and back leading block 8b wheel body respectively and the radian of each self-forming equates, i.e. Rad
1=Rad
2, select for use above-mentioned angular range to get final product concrete enforcement.
As shown in Figure 9, the scale 2k that extends along its body 2a hand of spiral is being set on the spiral pipe micrometer element 2b outer tube wall; Spiral pipe micrometer element 2b is packed on the fixed base frame 32, prevents the distortion of its body by anti-deformation stilt 34, keeps its pitch, the radius of spin constant, and its central axis OE with respect to the horizontal plane vertically is provided with.
As shown in Figure 9, the upper end of spiral pipe micrometer element 2b by bend pipe 7a is communicated with its body 2a straight tube 7, the purpose that bend pipe 7a is set is pulled out fixing spiral pipe micrometer element 2b body by bell jar 10 by the soften 1b that restricts of load-bearing suspention smoothly for ease of silk rope 1a; The lower guide way roller 15 of the symmetry that cooperation is installed in the bell jar 10 rolls with wireway 14 outer tube walls of vertically fixing and cooperates, and assurance bell jar 10 guide rails along vertically setting move up and down.
The number reading method of bell-jar gas flow meter checking device has two big classes, promptly dynamic reading method and static reading method.
(1) dynamic method of reading
So-called dynamically reading method is promptly in the bell jar motion process, two baffle plates are read volume during successively by photocurrent generator, and the volume between two baffle plates is fixed, so be referred to as dynamic reading method, in brief, dynamically reading method is exactly that bell jar is finished the once method of calibrating in motion process.Dynamically reading method development a kind of new form in recent years, make exactly chain with the motion of bell jar disc rotated, adopt scrambler that the rotation of disk is converted into pulse and carry out record, the advantage of this mode is the restriction that the use of bell jar is not subjected to each class, but the circularity and the linearity of bell jar had higher requirements.
(2) static reading method
So-called static reading method, promptly bell jar is read the method for volume when transfixion.This reading method needs a scale, all corresponding bell jar volume of each scale on the scale, and this corresponding relation is decided by calibrating in advance.Scale should have enough reading resolving powers, and it should be much smaller than the relative uncertainty of bell jar volume with the ratio of clean reading in the calibrating once.
From above-mentioned existing number reading method commonly used, because static reading method scale label precision is not high enough, therefore, the usable range of static reading method has been subjected to certain restriction, and person skilled is to adopt dynamic method of reading to measure the volume of bell jar more.
As Fig. 2 and shown in Figure 9, this bell-jar gas flow meter checking device utilizes spiral surrounding radius r in the spiral pipe micrometer element and the relation of helical trajectory length (being thread) l and the pitch d of unit, promptly according to
Carry out work, and the wheel body 35 of back leading block 8b and wheel body 36a (or the radius r of the cylindrical shell 36b of reel 8a2 of sheave 8a1
c) radius r
cRatio also should satisfy
After the transmission during the coaxial synchronous rotation of leading block 8b and sheave 8a1 (reel 8a2), need make a silk rope 1a go up to fit all the time and contact the radian Rad of corresponding formation moving at the gentle rope of load-bearing suspention 1b at the wheel body 36a of sheave 8a1 (i.e. circumferential wall 37a in circumferential groove)
1Or at the last radian Rad that fits contact and form of the wheel body 36b of reel 8a2 (i.e. circumferential wall 37b in its circumferential groove)
1Walk around the radian Rad that contacts with the circumferential wall of its wheel body 35 and form at back leading block 8b with making the gentle rope of load-bearing suspention 1b
2Equate, can guarantee that the gentle rope of load-bearing suspention 1b thread Δ Hx that moves and the thread Δ L that silk rope 1a slides satisfy in the body 2a of spiral pipe micrometer element
Relational expression, promptly Δ Hx is exaggerated K doubly on spiral thread Δ L, has improved the precision of measuring.In addition, use spiral pipe micrometer element 2b can make long straight thread be curved the helix thread, be convenient for measuring and use.Load-bearing suspention gentle rope 1b as shown in Figure 9 is if the A point in spiral pipe micrometer element 2b body moves to the B point, then the thread Δ L between A and the B point is exactly the vertical distance that bell jar sinks, can learn the volume differences Δ V that bell jar gives off, thus push away the gas volume V that discharges of its bell jar that need measure 10
s, standard volume flow q
VmCan calculate according to following formula:
The temperature value T that records when future thermometer 13
s, the pressure value P that records of future tensimeter 21
sAnd the temperature value T that records of back journey thermometer 18
m, back stroke pressure table 19 measured pressure value P
m, compressibility coefficient Z
s, Z
mGas volume V with minute t and bell jar discharge
sAfter obtaining determining, will be by the demonstration indicating value q of verification high precision flow 20
vWith calculate q
VmCompare, can learn by the relative error of the indicating value of school flowmeter 20.This shows, as the gas volume V of bell jar 10 discharges
sMeasuring accuracy increased substantially by this spiral pipe micrometer element 2b after, its standard volume flow q
VmAccuracy value also can correspondingly be enhanced, thereby further improve the measuring accuracy of checking flow meter.
Use the present invention it can be formed the spiral pipe converter in conjunction with the corresponding sensor part, the non electrical quantity thing position curvilinear motion signal delta L (promptly as thing position variable signal-liquid level or displacement of the lines) that it can be easy to large scale to measure carries out the scale formula weightization and converts corresponding electric signal (digital signal) to, utilize the metering circuit of this electric signal to carry out the digital signal processing computational analysis at last, finally draw recorded the value of non electrical quantity thing position variable signal Δ h.
Claims (10)
1. spiral pipe micrometer element, comprise body (2a), it is characterized in that: body (2a) is along the cylindrical screw trajectory setting of spiral surrounding radius r such as constant pitch d and make it fixedly become the spiral pipe of spiral surrounding, be equipped with liquid (3a) in this spiral pipe or be equipped with the silk rope (1a) that is subjected to the constraint of its tube chamber and adapts with its constant pitch cylindrical screw trajectory, the internal perisporium clearance fit of silk rope (1a) periphery wall and spiral pipe, the inner tubal wall of this silk rope (1a) and spiral pipe movingly.
2. spiral pipe micrometer element according to claim 1 is characterized in that: spiral pipe outer tube diameter R
Gw〉=5mm.
3. spiral pipe micrometer element according to claim 1 is characterized in that: the scale (2k) that extends along its body (2a) hand of spiral is being set on the spiral pipe outer tube wall; Spiral pipe outer tube diameter R
GwBe 6-10mm, silk rope (1a) is a solid, and the tube wall of spiral pipe is made of clear glass, the radius ρ of silk rope (1a) xsect
sWith caliber ρ in the spiral pipe
GnRatio (ρ
Gn/ ρ
s) be 0.78-0.94, being full of in the perimetrical lumen of the internal perisporium of silk rope (1a) periphery wall and spiral pipe has transparent lubricating oil (3b).
4. spiral pipe micrometer element according to claim 1 is characterized in that: described clear glass is transparent engineering plastics or organic glass or soda-lime glass.
5. spiral pipe micrometer element according to claim 1 is characterized in that: caliber ρ in the spiral pipe
gWith the spiral surrounding radius r of spiral pipe ratio (ρ
g/ r) be 0.15-0.05.
6. level gauging container that includes spiral pipe micrometer element as claimed in claim 1, comprise liquid container (5), it is characterized in that: the lower end mouth of pipe of spiral pipe micrometer element (2b) connects the connected entrance of liquid container (5) bottom wall by linker (6), the scale (2k) that extends along its body (2a) hand of spiral is being set on spiral pipe micrometer element (2b) outer tube wall, and the relative surface level of central axis of spiral pipe micrometer element (2b) vertically is provided with.
7. a liquid pressure measurement container that includes spiral pipe micrometer element as claimed in claim 1 comprises spherical container (4), it is characterized in that: the lower end mouth of pipe of spiral pipe micrometer element (2b) connects the connected entrance of spherical container (4) wall; The scale (2k) that extends along its body (2a) hand of spiral is being set on spiral pipe micrometer element (2b) outer tube wall; The relative surface level of central axis of spiral pipe micrometer element (2b) vertically is provided with.
8. bell-jar gas flow meter checking device that includes spiral pipe micrometer element as claimed in claim 1, comprise leading block, pedestal (23), suspension apparatus, compensation mechanism (33), bell jar (10), liquid bath (16) and counterweight stone roller (31), suspension apparatus is by the column that is provided with guide rail (12), load-bearing gentle rope of suspention (1b) and guide roller (11) are formed, in sealing liquid (22) are housed liquid bath (16) match with the bell jar (10) of back-off, the upper guide way roller of installing in bell jar (10) both sides, bottom (11) matches with guide rail, also cooperates on the cover body in the bell jar (10) lower guide way roller (15) is installed; On bell jar (10) diapire, future thermometer (13) is installed, wireway (14) is being set in liquid bath (16), the upper end mouth of pipe of wireway (14) stretches into the air storing cavity of bell jar (10), the cell wall that liquid bath (16) is passed in the lower end of wireway (14) is communicated with the gas piping (24) that is placed on liquid bath (16), the future tensimeter (21) of measuring near the air pressure bell jar (10) is being installed on the gas piping (24) near the cell wall place of liquid bath (16), gas piping (24) is communicated with gives airduct (25) and gas outlet (28), be communicated with the air outlet of blower fan (27) for by stop valve (26) airduct (25), gas outlet (28) is communicated with atmosphere by variable valve (17) and tube coupling (29), back journey thermometer (18) and back stroke pressure table (19) are installed on the gas outlet (28) that is positioned between variable valve (17) and the tube coupling (29), be equipped with on the tube coupling (29) by school flowmeter (20), gentle rope (1b) end is suspended in its affixed load-bearing in bottom of being put up of the bell jar of back-off (10) in midair, described compensation mechanism (33) is a quadrant weight compensating mechanism, the lower end of compensation mechanism (33) is articulated on the fixed base frame (32), the upper end that above-mentioned gentle (1b) its other end of restricting of leading load-bearing suspention to pulley (9) and back leading block (8b) of installing with level altitude is connected compensation mechanism (33) is walked around in cooperation, and compensation mechanism (33) hangs bell jar (10) by the above-mentioned load-bearing gentle rope of suspention (1b); It is characterized in that: also be fixed with and its reel (8a) radius r of the wheel body (36) of reel (8a) on the back leading block (8b) with circular shaft
c, the back leading block (8b) wheel body (35) radius r
dAnd the mathematical relation that the spiral surrounding radius r of body (2a) satisfies is:
And make the gentle rope of load-bearing suspention (1b) walk around the radian Rad that contacts with the circumferential wall (35a) of its wheel body (35) and form at back leading block (8b)
2The radian Rad that forms with silk rope (1a) being walked around contact on sheave (8a1) or reel (8a2) with its wheel body circumferential wall
1Identical; Being through the bottom surface cell wall (37a) that its upper end of silk rope (1a) in fixing spiral pipe micrometer element (2b) pipe is fixed in sheave (8a1) circumferential groove goes up or is fixed on reel (8a2) outer tube wall (37b), the lower end of silk rope (1a) is hung and is connected to the counterweight stone roller (31) that matches with bell jar (10), bell jar (10) drives back leading block (8b) by the load-bearing gentle rope of suspention (1b) and rotates, back leading block (8b) makes the rotation of the sheave that install coaxial with it (8a1) or reel (8a2) receive the silk rope of upwards being sling (1a) again, is furled by sheave (8a1) that the silk rope (1a) of having reeled of hanging oneself needs to fit with the circumferential wall (37a) of its wheel body (36a) or furled hang oneself thread restrict (1a) that reeled by reel (8a2) need fit with the outer tube wall (37b) of its cylindrical shell (36b) and contact.
9. spiral pipe micrometer element according to claim 8 is characterized in that: the scale (2k) that extends along its body (2a) hand of spiral is being set on spiral pipe micrometer element (2b) outer tube wall; Spiral pipe micrometer element (2b) is packed on the fixed base frame (32), prevents the distortion of its body by anti-deformation stilt (34), keeps its pitch, the radius of spin constant, and its central axis OE with respect to the horizontal plane vertically is provided with.
10. spiral pipe micrometer element according to claim 8 is characterized in that: the upper end of spiral pipe micrometer element (2b) by bend pipe (7a) be communicated with its body (2a) straight tube (7); The lower guide way roller (15) of the symmetry that cooperation is installed in the bell jar (10) rolls with wireway (14) outer tube wall of vertically fixing and cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102687195A CN101968371B (en) | 2010-09-01 | 2010-09-01 | Spiral tube micrometer element and micrometer device containing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102687195A CN101968371B (en) | 2010-09-01 | 2010-09-01 | Spiral tube micrometer element and micrometer device containing same |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110446494.2A Division CN102564525B (en) | 2010-09-01 | 2010-09-01 | Bell jar type gas flowmeter calibration device with spiral pipe micrometer element |
Publications (2)
| Publication Number | Publication Date |
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| CN101968371A true CN101968371A (en) | 2011-02-09 |
| CN101968371B CN101968371B (en) | 2012-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102687195A Expired - Fee Related CN101968371B (en) | 2010-09-01 | 2010-09-01 | Spiral tube micrometer element and micrometer device containing same |
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| CN (1) | CN101968371B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105526997A (en) * | 2015-12-29 | 2016-04-27 | 中国原子能科学研究院 | Calibration container, calibration circuit and calibration method of liquid metal flow gauge |
| CN109238185A (en) * | 2018-09-30 | 2019-01-18 | 江苏省水利科学研究院 | A kind of bridge pier real-time safety monitoring system and monitoring method |
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| CN105526997A (en) * | 2015-12-29 | 2016-04-27 | 中国原子能科学研究院 | Calibration container, calibration circuit and calibration method of liquid metal flow gauge |
| CN105526997B (en) * | 2015-12-29 | 2018-10-09 | 中国原子能科学研究院 | A kind of flow of liquid metal gauge calibration container, calibration circuit and scaling method |
| CN109238185A (en) * | 2018-09-30 | 2019-01-18 | 江苏省水利科学研究院 | A kind of bridge pier real-time safety monitoring system and monitoring method |
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|---|---|
| CN101968371B (en) | 2012-09-26 |
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Address after: 830011 the Xinjiang Uygur Autonomous Region Institute of measurement and measurement, No. 188 East Hebei Road, the Xinjiang Uygur Autonomous Region, Urumqi Applicant after: Zheng Yunlin Address before: 830011, room 2, unit 12, 601 North Zone, Lu Jiahua garden, Tianjin, the Xinjiang Uygur Autonomous Region, Urumqi Applicant before: Zheng Yunlin |
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Inventor after: Zheng Yunlin Inventor after: Zhang Songqiang Inventor after: Lv Zhongping Inventor after: Zhong Wei Inventor after: Li Xiaoyu Inventor after: Li Feng Inventor after: Huang Xianglai Inventor after: Lei Zhenjia Inventor before: Zheng Yunlin |
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Free format text: CORRECT: INVENTOR; FROM: ZHENG YUNLIN TO: ZHENG YUNLIN ZHANG SONGQIANG LV ZHONGPING ZHONG WEI LI XIAOYU LI FENG HUANG XIANGLAI LEI ZHENJIA |
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