CN108387280A - A kind of anti-sticking rotary-piston flowmeter - Google Patents
A kind of anti-sticking rotary-piston flowmeter Download PDFInfo
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- CN108387280A CN108387280A CN201810144622.XA CN201810144622A CN108387280A CN 108387280 A CN108387280 A CN 108387280A CN 201810144622 A CN201810144622 A CN 201810144622A CN 108387280 A CN108387280 A CN 108387280A
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- 238000005259 measurement Methods 0.000 claims abstract description 69
- 239000012535 impurity Substances 0.000 claims abstract description 66
- 210000004907 gland Anatomy 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 42
- 230000000694 effects Effects 0.000 claims description 20
- 239000013013 elastic material Substances 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 230000008034 disappearance Effects 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 230000008676 import Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
- G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
- G01F11/20—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/10—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation
- G01F11/12—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements
- G01F11/20—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates
- G01F11/22—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation of the valve type, i.e. the separating being effected by fluid-tight or powder-tight movements wherein the measuring chamber rotates or oscillates for liquid or semiliquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of anti-sticking rotary-piston flowmeters, including：The outer core of piston with annular measurement chamber, rotary-piston, gland and signal pickup assembly, the elastic restraint device of elastic restraint rotary-piston rotational trajectory in annular measurement chamber is provided in annular measurement chamber, the elastic restraint device can constrain the rotational trajectory of rotary-piston when rotary-piston is by torque drive, and rotary-piston is made to be rotated in annular measurement chamber by constraint rotational trajectory；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity, which can make elastic restraint device release the constraint to rotary-piston rotational trajectory until perturbed force disappears.The anti-sticking rotary-piston flowmeter of above structure effectively avoids the occurrence of rotary-piston stuck phenomenon on the basis of ensureing the high measuring accuracy of rotary-piston flowmeter, greatly reduces the failure rate of rotary-piston flowmeter.
Description
Technical field
The present invention relates to flowmeter more particularly to a kind of anti-sticking rotary-piston flowmeters.
Background technology
Rotary-piston flowmeter is a kind of volumetric flowmeter, is mainly used for the flow measurement to fluids such as liquid, gases.
Common rotary-piston flowmeter includes the outer core of piston, rotary-piston, gland and signal pickup assembly at present, outside the piston
Core is made of outer barrel, inner cylinder, bottom plate and demarcation strip, and bottom plate is covered in outer barrel bottom, and inner cylinder is set in outer barrel,
And the gap between inner cylinder and outer barrel constitutes the annular measurement chamber of bottom lock, demarcation strip is located in annular measurement chamber, and
The two sides and bottom edge of demarcation strip are tightly connected with inner cylinder lateral wall, outer barrel madial wall and bottom plate respectively, positioned at annular
Fluid inlet and fluid outlet are provided on the bottom plate of measurement chamber bottom, fluid inlet and fluid outlet are located at demarcation strip two
Side.Open slot is vertically offered on the side wall of rotary-piston, rotary-piston is set in annular measurement chamber and demarcation strip inlay card
In the open slot of rotary-piston, rotary-piston energy opposing spaced apart plate rotates in annular measurement chamber, rotary-piston and demarcation strip
Fluid inlet and fluid outlet are separated, gland is by rotary-piston closing cap in core outside piston.When work fluid into and out of
It will produce the torque that driving rotary-piston is rotated around a direction under mouth differential pressure effect, rotary-piston is counted by torque drive in annular
When being rotated in amount chamber, the revolution of rotary-piston is directly proportional to the fluid flow for flowing through rotary-piston flowmeter, thus passes through signal
Harvester acquisition rotary-piston revolution can calculate the fluid flow for flowing through rotary-piston flowmeter.The rotation of above structure
Piston meter in use, since rotational trajectory of the rotary-piston in annular measurement chamber is unfettered, thus rotates
Rotational trajectory of the piston in annular measurement chamber is affected by fluid flow, pressure etc., is susceptible to rotary-piston floating
In annular measurement chamber phenomenon, this can substantially reduce the measuring accuracy of rotary-piston flowmeter.
Also there are the rotary-piston flowmeter constrained the rotational trajectory of rotary-piston, such as Patent No. at present
The Chinese invention patent application of 200820048175X and the Chinese invention patent application of Patent No. 2014204031038 are equal
A kind of rotary-piston flowmeter with rigid constraint device is disclosed, the structure of the rigid constraint device is：Outside piston
It is fixedly installed fixing axle in core, the shaft core position of rotary-piston is provided with central shaft, rotary-piston is in annular measurement chamber
Central shaft fitting fixing axle side wall rotation when rotation is coordinated by fixing axle and central shaft and is measured in annular to constrain rotary-piston
Rotational trajectory in chamber, rotary-piston by torque drive when, rotary-piston lateral wall fitting outer barrel madial wall rotation and rotate
Piston madial wall is bonded the rotation of inner cylinder lateral wall.The shortcomings that this rotary-piston flowmeter with rigid constraint device is：
In actual use due to inevitably there is impurity in liquid, impurity is easily stuck in rotary-piston lateral wall and outer barrel
Between side wall and between rotary-piston madial wall and inner cylinder lateral wall, so as to cause rotary-piston it is stuck and can not be normal
Rotation.
Invention content
The technical issues of being solved needed for of the invention be：It is high and be avoided that rotary-piston occur stuck to provide a kind of measuring accuracy
The anti-sticking rotary-piston flowmeter of phenomenon.
To solve the above problems, the technical solution adopted by the present invention is：A kind of anti-sticking rotary-piston flowmeter, packet
It includes：The outer core of piston with annular measurement chamber, rotary-piston, gland and signal pickup assembly, can be according to reality in real process
Border demand uses a plurality of types of signal pickup assemblies, and is acquired and filled come setting signal according to different types of signal pickup assembly
Setting in the position in rotary-piston flowmeter, this belongs to technology ripe in field of flow meters, in this just no longer specific expansion
Description.The elastic restraint dress of elastic restraint rotary-piston rotational trajectory in annular measurement chamber is provided in annular measurement chamber
It sets, the elastic restraint device can constrain the rotational trajectory of rotary-piston when rotary-piston is by torque drive, make rotation
Piston is rotated by constraint rotational trajectory in annular measurement chamber；In the interference that rotary-piston is hindered to be formed by torque drive and impurity
When power, which can make elastic restraint device release the constraint to rotary-piston rotational trajectory until perturbed force disappears.
Further, a kind of anti-sticking rotary-piston flowmeter above-mentioned, wherein further include pedestal, be provided on pedestal
Accommodating chamber recessed down offers fluid inlet channel and outlet fluid in accommodating chamber bottom, and the outer core fixation of piston is set
It is placed in accommodating chamber, for gland by core closing cap outside piston in accommodating chamber, the fluid inlet and fluid of the outer core bottom of piston are defeated
Enter channel to be connected, the fluid outlet of the outer core bottom of piston is connected with outlet fluid.
Further, a kind of anti-sticking rotary-piston flowmeter above-mentioned, wherein the structure of the elastic restraint device
For：Be provided with inner cylinder in annular measurement chamber, sliding axle is interspersed be set in inner cylinder and sliding axle can be in inner cylinder on
Lower slider, extension spring one end are fixedly connected with sliding axle, and the other end of extension spring is fixedly connected with inner cylinder, are stretching bullet
Spring force acts on lower slider axle position, and there are adjustment gaps between upper limit position and sliding axle bottom and inner cylinder bottom；It is sliding
It is provided with the gradual increased guiding axis of diameter from top to bottom at the top of axis, the shaft core position of rotary-piston is provided with central shaft, in
Mandrel extends downwardly into inner cylinder；When rotary-piston is by torque drive, under the effect of extension spring elastic force, central shaft fitting is led
It is rotated to axis side wall, and rotary-piston is made to be rotated in annular measurement chamber by constraint rotational trajectory；Rotary-piston is driven by torque
When dynamic and impurity hinders the perturbed force to be formed, which can force sliding axle to overcome extension spring elastic force slide downward, make rotation
It turns a work plug and shifts and concede impurity removal distance.
Further, a kind of anti-sticking rotary-piston flowmeter above-mentioned, wherein the limit shaft shoulder is provided on sliding axle,
The limited block outwardly protruded is provided on the madial wall of the inner cylinder above limit shaft shoulder, extension spring is sheathed on sliding
On axis and one end of extension spring is resisted against on the limit shaft shoulder, and the other end of extension spring is fixedly connected with inner cylinder, is being stretched
The spring force effect lower limit shaft shoulder is resisted against on limited block and there are adjustment gaps between sliding axle bottom and inner cylinder bottom.
Elastic restraint device is not limited to above structure, and the structure of the elastic restraint device can also use following knot
The structure of structure, the elastic restraint device is：Inner cylinder is provided in annular measurement chamber, sliding axle is interspersed to be set to inner cylinder
In body and sliding axle can slide up and down in inner cylinder, and extension spring one end is fixedly connected with sliding axle, extension spring it is another
End is resisted against accommodating chamber bottom, and lower slider axle position is acted in upper limit position and sliding axle bottom and accommodating chamber in extension spring elastic force
There are adjustment gaps between bottom；It is provided with the gradual increased guiding axis of diameter from top to bottom at the top of sliding axle, lives in rotation
The shaft core position of plug is provided with central shaft, and central shaft extends downwardly into inner cylinder；When rotary-piston is by torque drive, stretching
Spring force effect under, central shaft be bonded guiding axis side wall rotation, and make rotary-piston by constraint rotational trajectory in annular based on
It is rotated in amount chamber；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity, which can force sliding axle gram
It takes extension spring elastic force slide downward, make rotary-piston shift to concede impurity removal distance.
Further, a kind of anti-sticking rotary-piston flowmeter above-mentioned, wherein the limit shaft shoulder is provided on sliding axle,
The limited block outwardly protruded is provided on the madial wall of the inner cylinder above limit shaft shoulder, extension spring is sheathed on sliding
On axis and one end of extension spring is resisted against on the limit shaft shoulder, and the other end of extension spring is resisted against accommodating chamber bottom, is stretching
The spring force effect lower limit shaft shoulder is resisted against on limited block and there are adjustment gaps between sliding axle bottom and accommodating chamber bottom.
Elastic restraint device is not limited to above structure, and the structure of the elastic restraint device can also use following knot
The structure of structure, the elastic restraint device is：It is provided with inner cylinder in annular measurement chamber, is fixedly installed in inner cylinder
The elastic shaft made of elastic material is provided with central shaft in the shaft core position of rotary-piston, and central shaft extends downwardly into inner cylinder
In；When rotary-piston is by torque drive, central shaft is bonded the rotation of elastic shaft side wall, and makes rotary-piston by constraint rotation rail
Mark rotates in annular measurement chamber；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity, which can compel
Make elastic shaft stress area that flexible deformation occur, make rotary-piston shift to concede impurity removal distance.
Further, a kind of anti-sticking rotary-piston flowmeter above-mentioned, wherein the elastic shaft by epimere elastic shaft and
Hypomere elastic shaft is constituted, and epimere elasticity shaft diameter is less than hypomere elasticity shaft diameter, shape between epimere elastic shaft and hypomere elastic shaft
At step surface, the limited block outwardly protruded is provided on the madial wall of the inner cylinder above step surface；Rotary-piston is only
When by torque drive, central shaft is bonded the rotation of epimere elastic shaft side wall, and makes rotary-piston by constraint rotational trajectory in annular
It is rotated in measurement chamber；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity, which can force epimere bullet
Property axis stress area flexible deformation occurs, makes rotary-piston shift to concede impurity removal distance.
Elastic restraint device is not limited to above structure, and the structure of the elastic restraint device can also use following knot
The structure of structure, the elastic restraint device is：It is provided with inner cylinder in annular measurement chamber, is offered in inner cylinder epimere
One stepped hole, first step bore dia are more than inner cylinder inner wall aperture, are provided in first step hole and are made of elastic material
Elastic eccentric hoop, elastic eccentric hoop can be in first step hole around first step hole axis rotation, in the axle center of rotary-piston
Position is provided with central shaft, and central shaft stretches into the eccentric orfice of elastic eccentric hoop, when rotary-piston is by torque drive, central shaft
Eccentric hoop rotation is pushed, and rotary-piston is made to be rotated in annular measurement chamber by constraint rotational trajectory；Rotary-piston is by torque
When driving and impurity hinder the perturbed force to be formed, which can force eccentric orfice stress area that flexible deformation occurs, makes rotation
Piston, which shifts, concedes impurity removal distance.
Elastic restraint device is not limited to above structure, and the structure of the elastic restraint device can also use following knot
The structure of structure, the elastic restraint device is：It is provided with inner cylinder in annular measurement chamber, is fixedly installed in inner cylinder
Limit shaft is provided with the elastic center axis made of elastic material, elastic center axially downwardly extending in the shaft core position of rotary-piston
Enter in inner cylinder, when rotary-piston is by torque drive, elastic center axis is bonded the rotation of limit shaft side wall, and makes rotary-piston
It is rotated in annular measurement chamber by constraint rotational trajectory；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity,
The perturbed force can force elastic center axis stress area occur flexible deformation, make rotary-piston shift concede impurity removal away from
From.
Further, a kind of anti-sticking rotary-piston flowmeter above-mentioned, wherein the limit shaft by epimere limit shaft and
Hypomere limit shaft is constituted, and epimere limits shaft diameter and is less than hypomere limit shaft diameter；When rotary-piston is by torque drive, in elasticity
Mandrel is bonded the rotation of epimere elastic shaft side wall, and rotary-piston is made to be rotated in annular measurement chamber by constraint rotational trajectory；Rotation
Plug is turned a work when being hindered the perturbed force to be formed by torque drive and impurity, which can force elastic center axis stress area to occur
Flexible deformation makes rotary-piston shift to concede impurity removal distance.
The beneficial effects of the invention are as follows：It is effectively avoided out on the basis of ensureing the high measuring accuracy of rotary-piston flowmeter
Existing rotary-piston stuck phenomenon, greatly reduces the failure rate of rotary-piston flowmeter.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of second of embodiment of anti-sticking rotary-piston flowmeter of the present invention.
Fig. 2 is a kind of explosive view of second of embodiment of anti-sticking rotary-piston flowmeter of the present invention.
Fig. 3 is the structural schematic diagram of overlook direction rotary-piston and the outer core of piston in Fig. 1.
Fig. 4 is the structural schematic diagram that sliding axle releases the rotational trajectory constraint to rotary-piston in Fig. 1.
Fig. 5 is a kind of structural schematic diagram of the 4th kind of embodiment of anti-sticking rotary-piston flowmeter of the present invention.
Fig. 6 is the structural schematic diagram that elastic shaft releases the rotational trajectory constraint to rotary-piston in Fig. 5.
Fig. 7 is a kind of structural schematic diagram of the 5th kind of embodiment of anti-sticking rotary-piston flowmeter of the present invention.
Fig. 8 is the structural schematic diagram of overlook direction rotary-piston and the outer core of piston in Fig. 7.
Fig. 9 is the structural schematic diagram that elastic eccentric hoop releases the rotational trajectory constraint to rotary-piston in Fig. 7.
Figure 10 is a kind of structural schematic diagram of the 6th kind of embodiment of anti-sticking rotary-piston flowmeter of the present invention.
Figure 11 is the structural schematic diagram that elastic central shaft releases the rotational trajectory constraint to rotary-piston in Figure 10.
Specific implementation mode
Below in conjunction with the accompanying drawings and preferred embodiment is described in further detail technical solutions according to the invention.
Embodiment one
Shown in Fig. 1, Fig. 2 and Fig. 3, a kind of anti-sticking rotary-piston flowmeter described in the present embodiment, including：The outer core 1 of piston,
Rotary-piston 2, gland 3 and signal pickup assembly, concrete structure and the specific location setting about signal pickup assembly belong to
Mature technology in field of flow meters is repeated no more at this.C-type rotary-piston can be used in rotary-piston 2, and H-type can also be used
Rotary-piston, for convenience of describing, the present embodiment is illustrated for using c-type rotary-piston.The outer core 1 of the piston is by outer
Cylinder 11, inner cylinder 12, bottom plate 13 and demarcation strip 14 are constituted, and bottom plate 13 is covered in 11 bottom of outer barrel, and inner cylinder 12 is set to
Gap in outer barrel 11, and between inner cylinder 12 and outer barrel 11 constitutes the annular measurement chamber 10 of bottom lock, demarcation strip 14
In annular measurement chamber 10, and the two sides of demarcation strip 14 and bottom edge respectively with inner cylinder lateral wall, outer barrel madial wall and
Bottom plate 13 is tightly connected.It is provided with fluid inlet 15 and fluid outlet 16 on the bottom plate 13 positioned at 10 bottom of annular measurement chamber,
Fluid inlet 15 and fluid outlet 16 are located at 14 both sides of demarcation strip, and gland 3 is by 2 closing cap of rotary-piston in core outside piston
In 1.Open slot 21 is vertically offered on 2 side wall of rotary-piston, rotary-piston 2 is set in annular measurement chamber 10 and demarcation strip
In the open slot 21 of rotary-piston 2,2 energy opposing spaced apart plate 14 of rotary-piston rotates 14 inlay cards in annular measurement chamber 10, revolves
It turns a work plug 2 and demarcation strip 14 separates fluid inlet 15 and fluid outlet 16.Elastic restraint rotation is provided in inner cylinder 12
The elastic restraint device of piston rotational trajectory in annular measurement chamber 10, the elastic restraint device rotary-piston 2 only by
The rotational trajectory that rotary-piston 2 can be constrained when torque drive makes rotary-piston 2 by constraint rotational trajectory in annular measurement chamber 10
Rotation, even if the madial wall rotation of the lateral wall fitting outer barrel 11 of rotary-piston 2 and the madial wall fitting inner cylinder of rotary-piston 2
The lateral wall of body 12 rotates.When rotary-piston 2 is hindered the perturbed force to be formed by torque drive and impurity, which can make bullet
Property restraint device release to the constraint of 2 rotational trajectory of rotary-piston until perturbed force disappears.
Shown in Fig. 1 and Fig. 4, the structure of the elastic restraint device described in the present embodiment is：The interspersed setting of sliding axle 5
In inner cylinder 12 and sliding axle 5 can slide up and down in inner cylinder 12, and 6 one end of extension spring is fixedly connected with sliding axle 5, draw
The other end for stretching spring 6 is fixedly connected with inner cylinder 12, is located at upper limit position in the elastic force effect downslide moving axis 5 of extension spring 6
And there are adjustment gap between 12 bottom of 5 bottom of sliding axle and inner cylinder, which is that sliding axle 5 overcomes extension spring 6
Elastic force offer space is provided.The top of sliding axle 5 is provided with the gradual increased guiding axis 52 of diameter from top to bottom,
Guiding axis 52 can be conical structure, can also be frustum cone structure.The shaft core position of rotary-piston 2 is provided with central shaft 22,
Central shaft 22 extends downwardly into inner cylinder 12.Rotary-piston 2 only by torque drive when, 6 elastic force of extension spring effect under, center
Axis 22 is bonded the rotation of 52 side wall of guiding axis, and rotary-piston 2 is made to be rotated in annular measurement chamber 10 by constraint rotational trajectory；Rotation
Plug 2 is turned a work when being hindered the perturbed force to be formed by torque drive and impurity, which can force sliding axle 5 to overcome extension spring 6
Elastic force slide downward, make rotary-piston 2 shift to concede impurity removal distance.
Connection type in the present embodiment between extension spring 6 and sliding axle 5 may be used it is above-mentioned be fixedly connected, also may be used
With on sliding axle 5 be arranged limit the shaft shoulder 51, be provided on the madial wall of the inner cylinder 12 above limit shaft shoulder 51 to
Ring limit block may be used in the limited block 121 of outer protrusion, limited block 121.Extension spring 6 is sheathed on sliding axle 5 and stretches
One end of spring 6 is resisted against on the limit shaft shoulder 51, and the other end of extension spring 6 is fixedly connected with inner cylinder 12, in extension spring 6
The elastic force effect lower limit shaft shoulder 51 is resisted against on limited block 121 and there are adjustment between 12 bottom of 5 bottom of sliding axle and inner cylinder
Gap.
The torque for driving rotary-piston 2 to be rotated around a direction is will produce under the effect of fluid import and export differential pressure when work,
When rotary-piston 2 is only rotated by torque drive in annular measurement chamber 10, as shown in figure 3, being acted in 6 elastic force of extension spring
Under, central shaft 22 is bonded the rotation of 52 side wall of guiding axis, and makes rotary-piston 2 by constraint rotational trajectory in annular measurement chamber 10
Rotation, at this time by the rotational trajectory of guiding axis 52 and the fiting constraint rotary-piston 2 of central shaft 22, central shaft 22 is along guiding axis
When 52 side walls rotate, the madial wall rotation of the lateral wall fitting outer barrel 11 of rotary-piston 2 and the madial wall fitting of rotary-piston 2
The lateral wall of inner cylinder 12 rotates.It is shown in Figure 4, when the perturbed force that rotary-piston 2 is hindered to be formed by torque drive and impurity
When, which can force sliding axle 5 to overcome the elastic force slide downward of extension spring 6, rotary-piston 2 is made to shift the row of conceding
Impurity distance releases the constraint to 2 rotational trajectory of rotary-piston, originally respectively with the 11 tangent rotation of inner cylinder 12 and outer barrel
Rotary-piston 2 can smoothly get around impurity, after rotary-piston 2, which smoothly gets around impurity or impurity, to be washed away by fluid, be applied to
Perturbed force on rotary-piston 2 disappears, and extension spring 6 makes rapidly sliding axle 5 move upwards homing under the effect of elasticity, this
When can pass through the rotational trajectory of guiding axis 52 and the fiting constraint rotary-piston 2 of central shaft 22 again.
Embodiment two
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the present embodiment and embodiment one the difference is that：
Anti-sticking rotary-piston flowmeter described in the present embodiment further includes pedestal 4, and appearance recessed down is provided on pedestal 4
It receives chamber, fluid inlet channel 41 and outlet fluid 42 is offered in accommodating chamber bottom, the outer core of piston 1 is fixedly installed on receiving
In chamber, for gland 3 by 1 closing cap of core outside piston in accommodating chamber, the fluid inlet 15 of outer 1 bottom of core of piston and fluid input are logical
Road 41 is connected, and the liquid outlet 16 of outer 1 bottom of core of piston is connected with fluid outlet channels 42.
The structure of elastic restraint device described in the present embodiment is：Sliding axle 5 is interspersed to be set in inner cylinder 12 and slides
Moving axis 5 can slide up and down in inner cylinder 12, and 6 one end of extension spring is fixedly connected with sliding axle 5, the other end of extension spring 6
It is resisted against accommodating chamber bottom, positioned at upper limit position and 5 bottom of sliding axle and is held in the elastic force effect downslide moving axis 5 of extension spring 6
It receives there are adjustment gap between the portion of bottom of chamber, which is that sliding axle 5 overcomes the elastic force of extension spring 6 to move downward to provide fortune
Dynamic space.5 top of sliding axle is provided with diameter from top to bottom, and gradually increased guiding axis 52, guiding axis 52 can be circular cone knots
Structure can also be frustum cone structure.The shaft core position of rotary-piston 2 is provided with central shaft 22, central shaft 22 extends downwardly into inner cylinder
In body 12.Rotary-piston 2 only by torque drive when, 6 elastic force of extension spring effect under, central shaft 22 be bonded 52 side wall of guiding axis
Rotation, and rotary-piston 2 is made to be rotated in annular measurement chamber 10 by constraint rotational trajectory；Rotary-piston 2 by torque drive and
When impurity hinders the perturbed force to be formed, which can force sliding axle 5 to overcome the elastic force slide downward of extension spring 6, make rotation
Plug 2 is turned a work to shift and concede impurity removal distance.
Connection type in the present embodiment between extension spring 6 and sliding axle 5 may be used it is above-mentioned be fixedly connected, also may be used
To be provided with the limit shaft shoulder 51 on sliding axle 5, it is provided on the madial wall of the inner cylinder 12 above limit shaft shoulder 51
Ring limit block may be used in the limited block 121 outwardly protruded, limited block 121.Extension spring 6 is sheathed on sliding axle 5 and draws
The one end for stretching spring 6 is resisted against on the limit shaft shoulder 51, and the other end of extension spring 6 is resisted against accommodating chamber bottom, in extension spring 6
The elastic force effect lower limit shaft shoulder 51 is resisted against on limited block 121 and there are adjustment between 12 bottom of 5 bottom of sliding axle and inner cylinder
Gap.
Remaining structure and occupation mode are identical as embodiment one, repeat no more.
Embodiment three
Shown in Fig. 5 and Fig. 6, the present embodiment and embodiment one or embodiment two are the difference is that elastic restraint device
Structure is different, and the structure of the elastic restraint device described in the present embodiment is：Inner cylinder 12 is provided in annular measurement chamber 10,
Elastic shaft 7 made of elastic material are fixedly installed in inner cylinder 12, the shaft core position of rotary-piston 2 is provided with center
Axis 22, central shaft 22 extend downwardly into inner cylinder 12；Rotary-piston 2 only by torque drive when, central shaft 22 is bonded elastic shaft 7 side
Wall rotates, and rotary-piston 2 is made to be rotated in annular measurement chamber by constraint rotational trajectory；Rotary-piston 2 by torque drive and
When impurity hinders the perturbed force to be formed, which can force 7 stress area of elastic shaft that flexible deformation occurs, makes rotary-piston 2
It shifts and concedes impurity removal distance.Remaining structure is identical as embodiment one or embodiment two, repeats no more.
The torque for driving rotary-piston 2 to be rotated around a direction is will produce under the effect of fluid import and export differential pressure when work,
Shown in Figure 5 when rotary-piston 2 is only rotated by torque drive in annular measurement chamber 10, central shaft 22 is bonded 7 side of elastic shaft
Wall rotates, and rotary-piston 2 is made to be rotated in annular measurement chamber 10 by constraint rotational trajectory, at this time by elastic shaft 7 in
The rotational trajectory of the fiting constraint rotary-piston 2 of mandrel 22, when central shaft 22 is rotated along 7 side wall of elastic shaft, outside rotary-piston 2
Side wall is bonded the lateral wall rotation of the madial wall fitting inner cylinder 12 of the madial wall rotation of outer barrel 11 and rotary-piston 2.Referring to
Shown in Fig. 6, when rotary-piston 2 is hindered the perturbed force to be formed by torque drive and impurity, the perturbed force can force elastic shaft 7 by
Power region occurs flexible deformation, makes rotary-piston 2 shift to concede impurity removal distance, that is, release to 2 rotation rail of rotary-piston
The constraint of mark, originally the rotary-piston 2 respectively with the 11 tangent rotation of inner cylinder 12 and outer barrel can smoothly get around impurity, work as rotation
It turns a work plug 2 smoothly to get around after impurity or impurity washed away by fluid, the perturbed force being applied on rotary-piston 2 disappears, and elastic shaft 7 becomes
Shape region back original shape can pass through the rotational trajectory of elastic shaft 7 and the fiting constraint rotary-piston 2 of central shaft 22 again at this time
.
Example IV
As shown in Figure 5 and Figure 6, the present embodiment and embodiment three the difference is that：The elastic shaft 7 is by epimere elastic shaft
71 and hypomere elastic shaft 72 constitute, 71 diameter of epimere elastic shaft be less than 72 diameter of hypomere elastic shaft, epimere elastic shaft 71 and hypomere
Step surface is formed between elastic shaft 72, the limit outwardly protruded is provided on the madial wall of the inner cylinder 12 above step surface
Ring limit block may be used in position block 121, the limited block 121.Rotary-piston 2 only by torque drive when, central shaft 22 paste
The rotation of 71 side wall of section elastic shaft is closed, and rotary-piston 2 is made to be rotated in annular measurement chamber 10 by constraint rotational trajectory；Rotation
When piston 2 is hindered the perturbed force to be formed by torque drive and impurity, which can force 71 stress area of epimere elastic shaft to be sent out
Raw flexible deformation makes rotary-piston shift to concede impurity removal distance.Remaining structure and occupation mode are identical as embodiment three,
It repeats no more.
Embodiment five
As shown in Figure 7, Figure 8 and Figure 9, the present embodiment and embodiment one or embodiment two are the difference is that elastic restraint device
Structure it is different, the structure of the elastic restraint device described in the present embodiment is：It is provided with inner cylinder in annular measurement chamber 10
12, first step hole is offered in inner cylinder epimere, first step bore dia is more than inner cylinder inner wall aperture, in first step hole
In be provided with made of elastic material elastic eccentric hoop 8, elastic eccentric hoop 8 can be in first step hole around first step hole axle
The heart rotates, and the shaft core position of rotary-piston 2 is provided with central shaft 22, central shaft 22 stretches into the eccentric orfice 81 of elastic eccentric hoop 8
In, rotary-piston 2 only by torque drive when, central shaft 22 push eccentric hoop 8 rotate, and make rotary-piston 2 by constraint rotate
Track rotates in annular measurement chamber 10；When rotary-piston 2 is hindered the perturbed force to be formed by torque drive and impurity, the perturbed force
It can force 81 stress area of eccentric orfice that flexible deformation occurs, makes rotary-piston 2 shift to concede impurity removal distance.Remaining structure
It is identical as embodiment one or embodiment two, it repeats no more.
The torque for driving rotary-piston 2 to be rotated around a direction is will produce under the effect of fluid import and export differential pressure when work,
Shown in Figure 7 when rotary-piston 2 is only rotated by torque drive in annular measurement chamber 10, central shaft 22 pushes 8 turns of eccentric hoop
It is dynamic, and rotary-piston 2 is made to be rotated in annular measurement chamber 10 by constraint rotational trajectory, pass through eccentric hoop 8 and central shaft at this time
The rotational trajectory of 22 fiting constraint rotary-piston 2, when central shaft 22 pushes eccentric hoop 8 to rotate, the lateral wall patch of rotary-piston 2
Close the lateral wall rotation of the madial wall fitting inner cylinder 12 of the madial wall rotation of outer barrel 11 and rotary-piston 2.As shown in figure 9,
When rotary-piston 2 is hindered the perturbed force to be formed by torque drive and impurity, which can force 81 stress area of eccentric orfice
Flexible deformation occurs, makes rotary-piston 2 shift to concede impurity removal distance, that is, release the pact to 2 rotational trajectory of rotary-piston
Beam, originally the rotary-piston 2 respectively with the 11 tangent rotation of inner cylinder 12 and outer barrel can smoothly get around impurity, work as rotary-piston
After 2 smooth bypass impurity or impurity are washed away by fluid, the perturbed force being applied on rotary-piston 2 disappears, 81 deformed area of eccentric orfice
Original shape is replied in domain, can pass through the rotational trajectory of eccentric hoop 8 and the fiting constraint rotary-piston 2 of central shaft 22 again at this time.
Embodiment six
Shown in Figure 10 and Figure 11, the present embodiment is with embodiment one or embodiment two the difference is that elastic restraint device
Structure it is different, the structure of the elastic restraint device described in the present embodiment is：It is provided with inner cylinder in annular measurement chamber 10
12, it is fixedly installed limit shaft 9 in inner cylinder 12, is provided with made of elastic material in the shaft core position of rotary-piston 2
Elastic center axis 23, elastic center axis 23 extend downwardly into inner cylinder 12, rotary-piston 2 only by torque drive when, elastic center
Axis 23 is bonded the rotation of limit shaft side wall, and rotary-piston 2 is made to be rotated in annular measurement chamber 10 by constraint rotational trajectory；Rotation
When piston 2 is hindered the perturbed force to be formed by torque drive and impurity, which can force 23 stress area of elastic center axis to be sent out
Raw flexible deformation makes rotary-piston 2 shift to concede impurity removal distance.Remaining structure and embodiment one or embodiment two-phase
Together, it repeats no more.
The torque for driving rotary-piston 2 to be rotated around a direction is will produce under the effect of fluid import and export differential pressure when work,
It is shown in Figure 10 when rotary-piston 2 is only rotated by torque drive in annular measurement chamber 10, the fitting limit of elastic center axis 23
9 side wall of axis rotates, and rotary-piston 2 is made to be rotated in annular measurement chamber 10 by constraint rotational trajectory, passes through limit shaft 9 at this time
With the rotational trajectory of the fiting constraint rotary-piston 2 of elastic center axis 23, when elastic center axis 23 is rotated along 9 side wall of limit shaft,
The madial wall of the lateral wall fitting outer barrel 11 of rotary-piston 2 rotates and the madial wall of rotary-piston 2 is bonded the outer of inner cylinder 12
Side wall rotates.It is shown in Figure 11, when rotary-piston 2 is hindered the perturbed force to be formed by torque drive and impurity, the perturbed force
It can force 23 stress area of elastic center axis that flexible deformation occurs, makes rotary-piston 2 shift to concede impurity removal distance, that is, solve
Except the constraint to 2 rotational trajectory of rotary-piston, originally respectively with the rotary-piston 2 of 11 tangent rotation of inner cylinder 12 and outer barrel just
Impurity can be smoothly got around, after rotary-piston 2 smoothly gets around impurity or impurity is washed away by fluid, is applied on rotary-piston 2
Perturbed force disappears, and 23 deformed region of elastic center axis replys original shape, can pass through elastic center axis 23 and limit shaft 9 again at this time
The rotational trajectory of fiting constraint rotary-piston 2.
Embodiment seven
As shown in Figure 10 and Figure 11, the present embodiment and embodiment six the difference is that：The limit shaft 9 is limited by epimere
Axis 91 and hypomere limit shaft 92 are constituted, and 91 diameter of epimere limit shaft is less than 92 diameter of hypomere limit shaft；Rotary-piston 2 is only by torque
When driving, elastic center axis 23 is bonded the 91 side wall rotation of epimere elastic shaft, and makes rotary-piston 2 by constraint rotational trajectory in ring
It is rotated in shape measurement chamber 10；When rotary-piston 2 is hindered the perturbed force to be formed by torque drive and impurity, which can force bullet
Property 23 stress area of central shaft flexible deformation occurs, makes rotary-piston 2 shift to concede impurity removal distance.In actual processing mistake
Cheng Zhong, limit shaft 9 can be integrally machined molding with inner cylinder 11.Remaining structure and occupation mode are identical as embodiment six, no longer superfluous
It states.
The above is only presently preferred embodiments of the present invention, is not the limitation to any other form of present invention work, and
Any modification or equivalent variations, still fall within the scope of protection of present invention made by according to the technical essence of the invention.
It is an advantage of the invention that：Rotation is effectively avoided the occurrence of on the basis of ensureing the high measuring accuracy of rotary-piston flowmeter
2 stuck phenomena of plug are turned a work, the failure rate of rotary-piston flowmeter is greatly reduced.
Claims (10)
1. a kind of anti-sticking rotary-piston flowmeter, including：The outer core of piston with annular measurement chamber, rotary-piston, gland and signal
Harvester, it is characterised in that：Elastic restraint rotary-piston rotation rail in annular measurement chamber is provided in annular measurement chamber
The elastic restraint device of mark, the elastic restraint device can constrain rotary-piston when rotary-piston is by torque drive and be revolved
Transition mark makes rotary-piston be rotated in annular measurement chamber by constraint rotational trajectory；In rotary-piston by torque drive and impurity
When hindering the perturbed force formed, which can make elastic restraint device release the constraint to rotary-piston rotational trajectory until doing
Disturb power disappearance.
2. a kind of anti-sticking rotary-piston flowmeter described in accordance with the claim 1, it is characterised in that：Further include pedestal, in pedestal
On be provided with accommodating chamber recessed down, fluid inlet channel and outlet fluid are offered in accommodating chamber bottom, outside piston
Core is fixedly installed in accommodating chamber, gland by core closing cap outside piston in accommodating chamber, the fluid inlet of the outer core bottom of piston
It is connected with fluid inlet channel, the fluid outlet of the outer core bottom of piston is connected with outlet fluid.
3. a kind of anti-sticking rotary-piston flowmeter described in accordance with the claim 1, it is characterised in that：The elastic restraint device
Structure be：It is provided with inner cylinder in annular measurement chamber, sliding axle is interspersed to be set in inner cylinder and sliding axle can be in inner cylinder
It being slided up and down in body, extension spring one end is fixedly connected with sliding axle, and the other end of extension spring is fixedly connected with inner cylinder,
Extension spring elastic force acts on lower slider axle position, and there are adjustment gaps between upper limit position and sliding axle bottom and inner cylinder bottom；
It is provided with the gradual increased guiding axis of diameter from top to bottom at the top of sliding axle, the shaft core position of rotary-piston is provided with center
Axis, central shaft extend downwardly into inner cylinder；When rotary-piston is by torque drive, under the effect of extension spring elastic force, central shaft
It is bonded the rotation of guiding axis side wall, and rotary-piston is made to be rotated in annular measurement chamber by constraint rotational trajectory；Rotary-piston by
When torque drive and impurity hinder the perturbed force to be formed, which can force sliding axle to overcome the elastic force of extension spring to downslide
It moves, make rotary-piston shift to concede impurity removal distance.
4. a kind of anti-sticking rotary-piston flowmeter described in accordance with the claim 3, it is characterised in that：It is arranged on sliding axle limited
The position shaft shoulder, is provided with the limited block outwardly protruded, extension spring set on the madial wall of the inner cylinder above limit shaft shoulder
On sliding axle and one end of extension spring is resisted against on the limit shaft shoulder, and the other end of extension spring is fixed with inner cylinder to be connected
It connects, be resisted against on limited block in the elastic force effect lower limit shaft shoulder of extension spring and stayed between sliding axle bottom and inner cylinder bottom
There is adjustment gap.
5. a kind of anti-sticking rotary-piston flowmeter according to claim 2, it is characterised in that：The elastic restraint device
Structure be：It is provided with inner cylinder in annular measurement chamber, sliding axle is interspersed to be set in inner cylinder and sliding axle can be in inner cylinder
It being slided up and down in body, extension spring one end is fixedly connected with sliding axle, and the other end of extension spring is resisted against accommodating chamber bottom,
Extension spring elastic force acts on lower slider axle position, and there are adjustment gaps between upper limit position and sliding axle bottom and accommodating chamber bottom；
It is provided with the gradual increased guiding axis of diameter from top to bottom at the top of sliding axle, the shaft core position of rotary-piston is provided with center
Axis, central shaft extend downwardly into inner cylinder；When rotary-piston is by torque drive, under the elastic force effect of extension spring, center
Axis is bonded the rotation of guiding axis side wall, and rotary-piston is made to be rotated in annular measurement chamber by constraint rotational trajectory；Rotary-piston
When being hindered the perturbed force to be formed by torque drive and impurity, the elastic force which can force sliding axle to overcome extension spring is downward
It slides, make rotary-piston shift to concede impurity removal distance.
6. a kind of anti-sticking rotary-piston flowmeter according to claim 5, it is characterised in that：It is arranged on sliding axle limited
The position shaft shoulder, is provided with the limited block outwardly protruded, extension spring set on the madial wall of the inner cylinder above limit shaft shoulder
On sliding axle and one end of extension spring is resisted against on the limit shaft shoulder, and the other end of extension spring is resisted against accommodating chamber bottom
Portion is resisted against on limited block in the elastic force effect lower limit shaft shoulder of extension spring and is stayed between sliding axle bottom and accommodating chamber bottom
There is adjustment gap.
7. according to a kind of anti-sticking rotary-piston flowmeter as claimed in claim 1 or 2, it is characterised in that：The elastic restraint
The structure of device is：It is provided with inner cylinder in annular measurement chamber, is fixedly installed made of elastic material in inner cylinder
Elastic shaft is provided with central shaft in the shaft core position of rotary-piston, and central shaft extends downwardly into inner cylinder；Rotary-piston is only turned round
When square drives, central shaft is bonded the rotation of elastic shaft side wall, and makes rotary-piston by constraint rotational trajectory in annular measurement chamber
Rotation；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity, which can force elastic shaft stress area
Flexible deformation occurs, makes rotary-piston shift to concede impurity removal distance.
8. a kind of anti-sticking rotary-piston flowmeter according to claim 7, it is characterised in that：The elastic shaft is by epimere
Elastic shaft and hypomere elastic shaft are constituted, and epimere elasticity shaft diameter is less than hypomere elasticity shaft diameter, epimere elastic shaft and hypomere elasticity
Step surface is formed between axis, and the limited block outwardly protruded is provided on the madial wall of the inner cylinder above step surface；Rotation
When turning a work plug by torque drive, central shaft is bonded the rotation of epimere elastic shaft side wall, and makes rotary-piston by constraint rotation rail
Mark rotates in annular measurement chamber；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity, which can compel
Make epimere elastic shaft stress area that flexible deformation occur, make rotary-piston shift to concede impurity removal distance.
9. according to a kind of anti-sticking rotary-piston flowmeter as claimed in claim 1 or 2, it is characterised in that：The elastic restraint
The structure of device is：It is provided with inner cylinder in annular measurement chamber, first step hole, first step are offered in inner cylinder epimere
Bore dia is more than inner cylinder inner wall aperture, and the elastic eccentric hoop made of elastic material, elasticity are provided in first step hole
Eccentric hoop can be provided with central shaft in first step hole around first step hole axis rotation in the shaft core position of rotary-piston,
Central shaft stretches into the eccentric orfice of elastic eccentric hoop, and when rotary-piston is by torque drive, central shaft pushes eccentric hoop rotation, and
And rotary-piston is made to be rotated in annular measurement chamber by constraint rotational trajectory；Rotary-piston is hindered to be formed by torque drive and impurity
Perturbed force when, which can force eccentric orfice stress area that flexible deformation occurs, rotary-piston is made to shift the row of conceding
Impurity distance.
10. according to a kind of anti-sticking rotary-piston flowmeter as claimed in claim 1 or 2, it is characterised in that：The elastic restraint
The structure of device is：It is provided with inner cylinder in annular measurement chamber, limit shaft is fixedly installed in inner cylinder, in rotary-piston
Shaft core position be provided with the elastic center axis made of elastic material, elastic center axially downwardly extending enters in inner cylinder, rotation live
When plug is by torque drive, elastic center axis is bonded the rotation of limit shaft side wall, and rotary-piston is made to exist by constraint rotational trajectory
It is rotated in annular measurement chamber；When rotary-piston is hindered the perturbed force to be formed by torque drive and impurity, which can force bullet
Property central shaft stress area flexible deformation occurs, makes rotary-piston shift to concede impurity removal distance.
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| CN201810144622.XA CN108387280B (en) | 2018-02-12 | 2018-02-12 | Anti-seize rotary piston flowmeter |
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| CN201810144622.XA CN108387280B (en) | 2018-02-12 | 2018-02-12 | Anti-seize rotary piston flowmeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414492A (en) * | 2020-12-10 | 2021-02-26 | 张家港海纳德智能科技有限公司 | Piston core in rotary piston flowmeter |
| CN118500495A (en) * | 2024-04-30 | 2024-08-16 | 江苏雷泰自动化仪表股份有限公司 | High-precision piston flowmeter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112414492A (en) * | 2020-12-10 | 2021-02-26 | 张家港海纳德智能科技有限公司 | Piston core in rotary piston flowmeter |
| CN118500495A (en) * | 2024-04-30 | 2024-08-16 | 江苏雷泰自动化仪表股份有限公司 | High-precision piston flowmeter |
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