CN105908288B - A kind of device and its method of testing tested cotton carding owner and comb area's interior air-flow parameter - Google Patents
A kind of device and its method of testing tested cotton carding owner and comb area's interior air-flow parameter Download PDFInfo
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- CN105908288B CN105908288B CN201610283451.XA CN201610283451A CN105908288B CN 105908288 B CN105908288 B CN 105908288B CN 201610283451 A CN201610283451 A CN 201610283451A CN 105908288 B CN105908288 B CN 105908288B
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- steel
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/14—Constructional features of carding elements, e.g. for facilitating attachment of card clothing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The present invention relates to a kind of device tested cotton carding owner and comb area's interior air-flow parameter,Including transmission main pipeline and probe,It is L-shaped wherein to transmit main pipeline,It is main pipe outlet to transmit main pipeline one end,The other end is provided with several probes being vertically arranged,Static pressure tapping and total head pressure port are provided with probe tip,Static pressure tapping is arranged on the back side of total head pressure tappings,Static pressure branch pipe and dynamic pressure branch pipe are provided with probe,Static pressure tapping and total head pressure port are connected with the static pressure branch pipe in probe and dynamic pressure branch pipe respectively,Static pressure branch pipe and dynamic pressure branch pipe end are exported by main pipeline to be connected with micro-pressure sensor,Steel bushing is respectively equipped with two probes of transmission main pipeline bending part,And two steel bushings are connected by steel section,Steel section upper end is provided with resistance wire,A steel bushing in two steel bushings is connected with contact rod,The contact rod other end is arranged on steel section upper end.The present invention converts to obtain the location parameter of depth of probe by electric current so that experiment measurement is accurate, quick.
Description
Technical field
The invention belongs to textile technology field, more particularly to it is a kind of test cotton carding owner comb area's interior air-flow parameter device and
Its method of testing.
Background technology
Carding machine is used to process cotton fiber and chemical fibre, belongs to textile machine.According to spinning technological process, cotton carding is one
The important process in road.The preceding working procedure of carding machine is Blowing-carding Unit, later process be drawing frame (general comb technological process) or
Lap former (combing flow).
The operation principle of carding machine is cotton (fiber) volume or the oily cotton (chemical fibre) supplied by hopper for sending preceding working procedure
Layer carries out shredding point comb and removal of impurities, is that all cotton circles block in curling turn into the single fiber shape energy stretched substantially, and mistake herein
Cheng Zhong, broken seed, impurity and short flannel that cotton cleaning process carries over are removed, then integrate certain specification sliver, are stored in cotton cylinder,
Used for mixing in doubling step.
Carding machine realizes the efficient combing for combing the surface coated pin cloth of part to fiber by the revolution at a high speed of revolving meber.
Revolving meber size in carding machine is larger, and the gauge between the case and revolving meber on revolving meber surface is with respect to the size of revolving meber
For it is very small, order of magnitude highest differs 8 times, therefore fluid domain thickness present in carding machine is very thin；With right in production
The requirement of carding machine high yield high speed, the angular speed of revolving meber is more and more faster, therefore due to turning round the influence brought to air-flow more
Significantly.At the same time, the size of the fiber between part is combed is very small, can be regarded as the suspended particulates in fluid.Therefore, gas
Although the active force of stream is big to the intensity of fibration not as good as carding force, still can not be ignored.
Near the Zhu Shu areas being made up of cylinder and cover plate, due to the change of gauge, fluid domain spatial shape be present, because
This, air-flow in the region and can produce complicated change when flowing about with position, so as to have influence on the transfer of fiber, comb
And formation of flyings etc..Cylinder surface is with revolution at a high speed, and when the air-flow that its surface is driven is when by rear cowl, formation is higher
Air pressure, pair so as to being had an impact to the air-flow in Zhu Shu areas.Therefore, it is necessary to the air-flow in carding machine Shang Zhushu areas is determined
Quantifier elimination and control, realize effective control of fiber movement, ensure the efficient progress of combing and reduce the generation of flyings.
And in theoretical or experimental study, pin tooth of the revolving body surface covered with substantial amounts of cylinder-Panel area, shape
State parameter is enriched, and because both spacers are small, therefore cause the complexity of change of fluid.In addition, cylinder-Panel area
It is big to comb area, therefore, if can determine to comb the regularity of stream condition in region by the experiment measurement of set of system,
The wherein typical region of fluid motion may be selected to be simplified and analyzed.
In traditional measurement process, by the way that single Pitot tube probeed into Zhu Shu areas flow field, the air pressure of stream field each point and
Flow velocity carries out independent measurement, therefore in the data-gathering process of each point, is easier to generation and obscures, and add workload；When
Change Pitot tube when probeing into depth, it is necessary to shut down after, readjusting in height is carried out to each Pitot tube so that measurement efficiency
Reduce, and due to the independent control of each Pitot tube depth, the depth probeed into there may be larger error and workload is complicated.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of test cotton carding owner comb area's interior air-flow parameter device and
Its method of testing, solve traditional measurement in the data-gathering process of each point, be easier to generation and obscure, and measurement efficiency is low, work
The problem of work amount is complicated and there may be larger error.
The technical solution adopted for the present invention to solve the technical problems is：A kind of test cotton carding owner is provided and combs area's interior air-flow
The device of parameter, including transmission main pipeline and probe, wherein the transmission main pipeline is L-shaped, described transmission main pipeline one end is
Main pipeline exports, the other end is provided with several probes being vertically arranged, provided with static pressure tapping and entirely at the probe tip
Pressure port is pressed, the static pressure tapping is arranged on the back side of total head pressure port, and the total head pressure port is used for face air flow direction,
Be provided with static pressure branch pipe and dynamic pressure branch pipe in the probe, the static pressure tapping and total head pressure port respectively with the static pressure in probe
Branch pipe is connected with dynamic pressure branch pipe, and the static pressure branch pipe and dynamic pressure branch pipe end are exported by main pipeline and be connected with micro-pressure sensor,
Steel bushing is respectively equipped with two probes of transmission main pipeline bending part, and two steel bushings are connected by steel section, the steel
Can mutually it be slid between set and steel section contact surface, the steel section is used to control probe to visit the depth for stretching into flow field regions, the steel section
Upper end is provided with resistance wire, and a steel bushing in described two steel bushings is connected with contact rod, and the contact rod other end is arranged on steel
Duan Shangduan, the rod end of the contact rod include the larger rough surface of electric material and coefficient of friction, and the conductive stick end is led
Electric material is contacted with the resistance wire in steel section, and the conductive material is connected by one end of wire and current testing device, described
The other end of resistance wire one end and current testing device connects.
The further technical scheme of the present invention is the transmission a diameter of 30mm of main pipeline, and is provided with probe portion pipeline
Length is 900mm.
The further technical scheme of the present invention is that the number of probes is 6.
The further technical scheme of the present invention is that probe is calculated by measuring the magnitude of current in the current testing device
The length stretched into.
The further technical scheme of the present invention is that the rod end rough surface of the contact rod is the arrangement side of marshalling
To consistent raised triangle particle.
A kind of a kind of test cotton carding owner described in use combs the method for testing of the device of area's interior air-flow parameter, including
Following steps：
(a) several characteristic points are uniformly taken in the cylinder of carding machine and the side of Panel area, including the region
Airflow inlet, 2 points of outlet；
(b) due to, along machine rear before machine to axisymmetrical, therefore, selecting the side of the axis of symmetry in the form in Zhu Shu areas
Region is tested, in the zone, each straight line parallel to gyroaxis axis using in step (a) where several characteristic points as
Benchmark, some Along ents are chosen as homologous series test point, punches, is obtained with several characteristic points in step (a) on the cover board
On the basis of some groups of points；
(c) by probe through cover plate steel plate and base fabric, stretch into the hole of corresponding label of above-mentioned cover plate, to corresponding positions
The flow field regions put carry out the measurement of flow parameter；
(d) air-flow entered by the static pressure tapping and total head pressure port of probe tip, it is quiet in main pipeline by transmitting
When pressure branch pipe and dynamic pressure branch pipe are transmitted to main pipeline exit, it is connected with outside micro-pressure sensor, so as to obtain probe tip institute
Static pressure and dynamic pressure value in position, and the flow velocity is obtained by the principle of Pitot tube.
The further technical scheme of the present invention is, in the step (a), the characteristic point quantity is 7.
The further technical scheme of the present invention is that in the step (b), the pore size of punching is relative with probe diameter
Should.
The further technical scheme of the present invention is that in the step (c), steel section is fixed on cover plate upper surface, as base
Directrix plane, control probe stretch into the depth of flow field regions.
The further technical scheme of the present invention is in the step (c), to pass through the change of angle α between steel section and contact rod
Change, measure the electric current by current testing device, it can be deduced that the syringe needle of probe stretches into cap locations depth.
This device is applicable to the fluid domain parameter measurement on other revolving meber surfaces in carding machine, such as in licker-in case, road
Installed on husband's case, the fluid motion situation between test licker-in-licker-in case, doffer-doffer's case.
The present apparatus considers the influence of the change convection body of gas channel in carding machine, and area's near zone is combed to cotton carding owner
Air-flow change measures, and sillometer is designed using Pitot tube principle design and miniature dynamic pressure transducer, in the same of measurement flow velocity
When measure air pressure level, so as to realize efficiently succinct measurement；With reference to the design feature of carding machine, apparatus of the present invention use multigroup
Pitot tubular construction, which combines, carries out unified measurement, can effectively control the position of measurement point, measurement apparatus take up space it is smaller, and can be same
When measure multiple measurement points, while continuous accurate adjustment can be achieved without shutdown operation in the regulation to measurement position, therefore
Stream field interference is small, eliminates the influence to accuracy of measurement caused by the difference of time of measuring, test operation is more
Simply.
Beneficial effect
It is of the invention compared with existing e measurement technology as a result of above-mentioned test device and scheme, have following excellent
Point and good effect：
For the present invention by being combined by multiple probe units, realization measures the effect of multigroup characteristic point data simultaneously, therefore,
Between the test point that the present invention can be with ensureing homologous series, locus, the uniformity and accuracy of time of measuring, biography is avoided
In the measurement of system, when each point is individually measured using traditional Pitot tube, due to respective control system independence and probe into
It is time-consuming caused by the regulation of depth to take ground；Due to the slip using contact rod, probe is set to connect when stretching into different length
Continuous convection body measures, and converts by electric current to obtain the location parameter of depth of probe simultaneously so that experiment measurement is accurate, fast
It is prompt.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is probe mplifying structure schematic diagram of the present invention.
Fig. 3 is Fig. 2 sectional views.
Fig. 4 is Fig. 3 close-up schematic views.
Fig. 5 is flow-field test characteristic point schematic diagram of the present invention.
Fig. 6 is the punching schematic diagram that cover plate of the present invention measures point.
Fig. 7 is the combination schematic diagram of probe of the present invention and cover plate bone.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
A kind of device tested cotton carding owner and comb area's interior air-flow parameter as shown in figures 1-4, including transmission main pipeline 1 and spy
Pin 2, wherein the transmission main pipeline 1 is L-shaped, if described transmission main pipeline 1 one end is main pipe outlet 3, the other end is provided with
A probe 2 being vertically arranged is done, static pressure tapping 4 and total head pressure port 5, the static pressure pressure are provided with the syringe needle of probe 2
Hole 4 is arranged on the back side of total head pressure port, and the total head pressure port 5 is used for face air flow direction, static pressure is provided with the probe 2
Branch pipe 7 and dynamic pressure branch pipe 6, the static pressure tapping 4 and total head pressure port 5 respectively with the static pressure branch pipe 7 and dynamic pressure branch in probe 2
Pipe 6 is connected, and the static pressure branch pipe 7 and the end of dynamic pressure branch pipe 6 are connected by main pipeline outlet 3 with micro-pressure sensor, close to transmission
Steel bushing 8 is respectively equipped with two probes of the bending part of main pipeline 1, and two steel bushings 8 are connected by steel section 9, the steel bushing 8 with
Can mutually it be slid between the contact surface of steel section 9, the steel section 9 is used to control probe 2 to visit the depth for stretching into flow field regions, the steel section 9
Upper end is provided with resistance wire 13, and a steel bushing 8 in described two steel bushings 8 is connected with contact rod 10, the other end of contact rod 10
Installed in the upper end of steel section 9, the rod end of the contact rod 10 includes the larger rough surface 12 of electric material 11 and coefficient of friction, described
The conductive material 11 at the rod end of contact rod 10 contacts with the resistance wire 13 in steel section 9, and the conductive material 11 passes through wire 20 and electricity
The other end of one end connection of current test device, described one end of resistance wire 13 and current testing device connects.
Transmission 1 a diameter of 30mm of main pipeline, and be 900mm provided with probe portion duct length.
The quantity of probe 2 is 6,2 a diameter of 3mm of probe, and some probes 2 are apart from one another by for common lid stave lengths
1/10th, gauge is arranged to 100~150mm；The length L of probe tip to steel bushing lower edge is 13-14.5mm, due to cover plate
The thickness sum of steel plate and base fabric is 8.5-9.7mm, and therefore, the distance that probe can be stretched under cover plate is 3.3-5mm.
The length that the current testing device is calculated probe 2 and stretched into by measuring the magnitude of current, as shown in Figure 3 and Figure 4,
Contact rod 10 be P by the conductive material 11 at rod end and the contact point of lower section resistance wire 13, conductive material 11 by wire 20 and
One end connection of current testing device, the Q points of the one end of resistance wire 13 are connected with the other end of current testing device, when probe 2 is whole
When body moves up, the contact point P of contact rod 10 and resistance wire 13 is moved to the left so that angle α subtracts between steel bushing 9 and contact rod 10
It is small, therefore the distance between PQ increases, the increase of PQ sections resistance, so, by the measurement of the electric current to flowing through the circuit, then may be used
Resistance value → effective resistance length of current value → resistance wire is obtained, after entering line program calculating, and then can accurately draw probe
The length stretched into, and be reflected on the transmission latter linked display screen of main pipeline.
The rod end rough surface 12 of the contact rod 10 is the consistent raised triangle particle of the orientation of marshalling, is made
Obtaining the frictional force being subject to when contact rod is moved to the left will be much smaller than moving right, as shown in Figure 3.
A kind of a kind of test cotton carding owner described in use combs the method for testing of the device of area's interior air-flow parameter, including
Following steps：
(a) several characteristic points 18 are uniformly taken in the cylinder 16 of carding machine and the side in the region of cover plate 17, including this
2 points airflow inlet A, outlet of the G in region, as shown in Figure 5；
(b) due to, along machine rear before machine to axisymmetrical, therefore, selecting the side of the axis of symmetry in the form in Zhu Shu areas
Region 19 is tested, in region 19, with where several characteristic points in step (a) parallel to each straight of gyroaxis axis
On the basis of line, some Along ents are chosen as homologous series test point, punches, obtains special with several in step (a) on the cover board
Some groups of points on the basis of sign point, as shown in Figure 6；
(c) by probe 2 through cover plate steel plate 14 and base fabric 15, stretch into the hole of corresponding label of above-mentioned cover plate, it is right
The flow field regions of relevant position carry out the measurement of flow parameter, as shown in Figure 7；
(d) air-flow entered by the static pressure tapping 4 and total head pressure port 5 of the syringe needle of probe 2, by transmitting main pipeline 1
When middle static pressure branch pipe 7 and dynamic pressure branch pipe 6 are transmitted to main pipeline outlet 3, it is connected with outside micro-pressure sensor, so as to obtain probe
The static pressure and dynamic pressure value of syringe needle position, and the flow velocity is obtained by the principle of Pitot tube.
In the step (a), the quantity of characteristic point 18 is 7.
In the step (b), the pore size of punching is corresponding with the diameter of probe 2.
In the step (c), steel section 9 is fixed on cover plate upper surface, and as datum plane, control probe 2 stretches into flow field area
The depth in domain.
In the step (c), by the change of angle α between steel section 9 and contact rod 10, measurement passes through current testing device
Electric current, it can be deduced that the syringe needle of probe 2 stretches into cap locations depth.
The probe diameter is 3mm；Pin spacer is 1/10th of common lid stave lengths, gauge is arranged to 100~
150mm；Probe tip to the length L of steel bushing lower edge be 13-14.5mm, because the thickness sum of cover plate steel plate and base fabric is
8.5-9.7mm, therefore, the distance that probe can be stretched under cover plate are 3.3-5mm.
Embodiment 1
The carding machine of common diameter is measured, by taking FA231 as an example.Now, a diameter of 1288mm of breast swift
Left and right, width are about 1000mm；Cover plate steel plate thickness is 5.5mm, and base fabric thickness is 3.5mm, and cover plate pin is 8mm.
The a diameter of 30mm of transmission main pipeline of test device, wherein, the length with probe portion is 900mm.
Probe diameter is 3mm；Pin spacer is 1/10th of common lid stave lengths, and gauge is arranged to 100mm；Probe
The length L of syringe needle to steel bushing lower edge is 13.5mm.In measurement process, it is respectively and fixedly provided with seven characteristic points of A, B, C, D, E, F, G
Measurement apparatus of the present invention, the depth difference of cover plate is stretched into according to probe, carries out the measurement of three depth, including probe tip is in
The needle point of cover plate pin, except at the half of base fabric thickness outer cover plate pin length and cover plate pin is close to the position of base fabric, now,
L length is respectively 13.5mm, 11.25mm and 9mm.
Embodiment 2
The carding machine of common diameter is measured, by taking FA231 as an example.Now, a diameter of 1288mm of breast swift
Left and right, width are about 1000mm；Cover plate steel plate thickness is 5.5mm, and base fabric thickness is 3mm, and cover plate pin is 8mm.
The a diameter of 30mm of transmission main pipeline of test device, wherein, the length with probe portion is 900mm.
Probe diameter is 3mm；Pin spacer is 1/10th of common lid stave lengths, and gauge is arranged to 100mm；Probe
The length L of syringe needle to steel bushing lower edge is 13.5mm.In measurement process, it is respectively and fixedly provided with seven characteristic points of A, B, C, D, E, F, G
Measurement apparatus of the present invention, the depth difference of cover plate is stretched into according to probe, carries out the measurement of five depth, including probe tip is in
The needle point of cover plate pin, except at a quarter of base fabric thickness outer cover plate pin length and cover plate pin is close to the position of base fabric, now,
L length is respectively 13.5mm, 12.25mm, 11mm, 9.75mm and 8.5mm.
Embodiment 3
The carding machine of minor diameter is measured, exemplified by standing and reach C70 carding machines.Now, breast swift is a diameter of
814mm or so, width are about 1500mm；Cover plate steel plate thickness is 5.5mm, and base fabric thickness is 3mm, and cover plate pin is 8mm.
The a diameter of 30mm of transmission main pipeline of test device, wherein, the length with probe portion is 900mm.
Probe diameter is 3mm；Pin spacer is 1/10th of common lid stave lengths, and gauge is arranged to 150mm；Probe
The length L of syringe needle to steel bushing lower edge is 13.5mm.In measurement process, it is respectively and fixedly provided with seven characteristic points of A, B, C, D, E, F, G
Measurement apparatus of the present invention, the depth difference of cover plate is stretched into according to probe, carries out the measurement of five depth, including probe tip is in
The needle point of cover plate pin, except at the half of base fabric thickness outer cover plate pin length and cover plate pin is close to the position of base fabric, now,
L length is respectively 13.5mm, 11mm and 8.5mm.
Claims (10)
1. a kind of device tested cotton carding owner and comb area's interior air-flow parameter, including transmission main pipeline (1) and probe (2), its feature
It is：The transmission main pipeline (1) is L-shaped, and described transmission main pipeline (1) one end is main pipe outlet (3), the other end is provided with
Several probes being vertically arranged (2), static pressure tapping (4) and total head pressure port (5), institute are provided with probe (2) syringe needle
The back side that static pressure tapping (4) is arranged on total head pressure port is stated, the total head pressure port (5) is used for face air flow direction, described
Be provided with static pressure branch pipe (7) and dynamic pressure branch pipe (6) in probe (2), the static pressure tapping (4) and total head pressure port (5) respectively with
Static pressure branch pipe (7) and dynamic pressure branch pipe (6) connection in probe (2), the static pressure branch pipe (7) and dynamic pressure branch pipe (6) end pass through
Main pipeline outlet (3) is connected with micro-pressure sensor, and steel is respectively equipped with two probes of transmission main pipeline (1) bending part
Cover (8), and two steel bushings (8) are connected by steel section (9), can mutually be slid between the steel bushing (8) and steel section (9) contact surface, institute
State steel section (9) to be used to control probe (2) to visit the depth for stretching into flow field regions, steel section (9) upper end is provided with resistance wire (13), institute
The steel bushing (8) stated in two steel bushings (8) is connected with contact rod (10), and contact rod (10) other end is arranged on steel section
(9) upper end, the rod end of the contact rod (10) includes the larger rough surface (12) of conductive material (11) and coefficient of friction, described
The conductive material (11) at contact rod (10) rod end contacts with the resistance wire (13) in steel section (9), and the conductive material (11) passes through
Wire (20) is connected with one end of current testing device, and the other end of described resistance wire (13) one end and current testing device connects
Connect.
A kind of 2. device tested cotton carding owner and comb area's interior air-flow parameter according to claim 1, it is characterised in that：It is described
Main pipeline (1) a diameter of 30mm is transmitted, and is 900mm provided with probe portion duct length.
A kind of 3. device tested cotton carding owner and comb area's interior air-flow parameter according to claim 1, it is characterised in that：It is described
Probe (2) quantity is 6.
A kind of 4. device tested cotton carding owner and comb area's interior air-flow parameter according to claim 1, it is characterised in that：It is described
The length that current testing device is calculated probe (2) and stretched into by measuring the magnitude of current.
A kind of 5. device tested cotton carding owner and comb area's interior air-flow parameter according to claim 1, it is characterised in that：It is described
The rod end rough surface (12) of contact rod (10) is the consistent raised triangle particle of the orientation of marshalling.
6. a kind of use a kind of test side for testing cotton carding owner and combing the device of area's interior air-flow parameter as claimed in claim 1
Method, it is characterised in that：Comprise the following steps：
(a) several characteristic points (18) are uniformly taken in the cylinder (16) of carding machine and the side in cover plate (17) region, including
The airflow inlet (A) in the region, 2 points of outlet (G)；
(b) due to, along machine rear before machine to axisymmetrical, therefore, selecting the region of the side of the axis of symmetry in the form in Zhu Shu areas
(19) tested, in the region of the side of the axis of symmetry (19), with where several characteristic points in step (a) parallel to
On the basis of each straight line of gyroaxis axis, some Along ents are chosen as homologous series test point, punches, is obtained with step on the cover board
Suddenly some groups of points in (a) on the basis of several characteristic points；
(c) by probe (2) through cover plate steel plate (14) and base fabric (15), stretch into the hole of corresponding label of above-mentioned cover plate,
The measurement of flow parameter is carried out to the flow field regions of relevant position；
(d) air-flow entered by the static pressure tapping (4) and total head pressure port (5) of probe (2) syringe needle, by transmitting main pipeline
(1) when static pressure branch pipe (7) and dynamic pressure branch pipe (6) are transmitted to main pipeline outlet (3) place in, it is connected with outside micro-pressure sensor, from
And the static pressure and dynamic pressure value of probe tip position are obtained, and probe tip position is obtained by the principle of Pitot tube
Flow velocity.
7. one kind according to claim 6 uses a kind of test cotton carding owner comb area's interior air-flow as claimed in claim 1
The method of testing of the device of parameter, it is characterised in that：In the step (a), characteristic point (18) quantity is 7.
8. one kind according to claim 6 uses a kind of test cotton carding owner comb area's interior air-flow as claimed in claim 1
The method of testing of the device of parameter, it is characterised in that：In the step (b), the pore size of punching is relative with probe (2) diameter
Should.
9. one kind according to claim 6 uses a kind of test cotton carding owner comb area's interior air-flow as claimed in claim 1
The method of testing of the device of parameter, it is characterised in that：In the step (c), steel section (9) is fixed on cover plate upper surface, as base
Directrix plane, control probe (2) stretch into the depth of flow field regions.
10. one kind according to claim 6 uses a kind of test cotton carding owner comb area's interior air-flow as claimed in claim 1
The method of testing of the device of parameter, it is characterised in that：In the step (c), pass through angle α between steel section (9) and contact rod (10)
Change, measure the electric current by current testing device, it can be deduced that the syringe needle of probe (2) stretches into cap locations depth.
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| CN201610283451.XA CN105908288B (en) | 2016-04-29 | 2016-04-29 | A kind of device and its method of testing tested cotton carding owner and comb area's interior air-flow parameter |
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| CN201610283451.XA CN105908288B (en) | 2016-04-29 | 2016-04-29 | A kind of device and its method of testing tested cotton carding owner and comb area's interior air-flow parameter |
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| CN106768824B (en) * | 2017-03-02 | 2020-05-22 | 北京航空航天大学 | Three-hole pressure probe comb |
| CN107132000B (en) * | 2017-05-08 | 2019-02-26 | 北京航空航天大学 | A kind of pressure probe comb with air blowing branching rod structure |
| CN108277559B (en) * | 2018-03-20 | 2023-08-04 | 武汉纺织大学 | Carding machine cover plate, carding machine and method for flexible carding spinning by using carding machine cover plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4235610C2 (en) * | 1992-10-22 | 2002-07-18 | Truetzschler Gmbh & Co Kg | Device on a spinning preparation machine, e.g. B. card, cleaner or the like, for measuring distances on sets |
| CN1974901A (en) * | 2006-05-29 | 2007-06-06 | 江苏万工科技集团有限公司 | Detecting device for reed blade back airflow curve |
| CN101482437A (en) * | 2009-02-12 | 2009-07-15 | 东华大学 | Special weft airflow acting force test device for main nozzle of jet loom |
| CN101482440B (en) * | 2009-02-12 | 2010-11-17 | 东华大学 | Special inside static pressure field test device for main nozzle of jet loom |
| CN101671946B (en) * | 2009-09-25 | 2011-06-08 | 东华大学 | Device for testing hair feather state of yarn under action of high-speed airflow |
| CN203224506U (en) * | 2013-04-06 | 2013-10-02 | 国家电网公司 | A combined-type wind speed measuring element using pressure balance pipes |
-
2016
- 2016-04-29 CN CN201610283451.XA patent/CN105908288B/en not_active Expired - Fee Related
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|---|---|
| CN105908288A (en) | 2016-08-31 |
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