CN109459331A - A kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material - Google Patents
A kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material Download PDFInfo
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- CN109459331A CN109459331A CN201910025563.9A CN201910025563A CN109459331A CN 109459331 A CN109459331 A CN 109459331A CN 201910025563 A CN201910025563 A CN 201910025563A CN 109459331 A CN109459331 A CN 109459331A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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Abstract
The invention discloses a kind of venturi orifice plate experimental rigs of the anti-cavitation corrosion of test material, including Venturi tube leading portion, Venturi tube back segment, convergence type orifice plate, test specimen to adjust bolt, anti-cavitation corrosion test specimen, single ended bolt, nut and test specimen position adjustment hole bolt.Venturi tube leading portion includes ring flange, and Venturi tube back segment includes ring flange and test specimen position adjustment hole group, and test specimen position adjustment hole group includes multiple test specimen positions adjustment hole.Convergence type orifice plate is built in the cylindrical cavity formed after the section engagement of Venturi tube front and back, each bolt hole of section ring flange is overlapped before and after Venturi tube, it is fixed with each single ended bolt and nut, test specimen adjusts the test specimen position adjustment hole that bolt penetrates divergent segment, and anti-cavitation corrosion test specimen is fixed on test specimen and adjusts on bolt.The present invention utilizes cavitation corrosion intensity in convergence type orifice plate stiffening device；Bolt is adjusted by test specimen and penetrates different test specimen positions adjustment hole change test specimen position, is reached best cavitation corrosion conventional efficient under each operating condition, is reduced experiment energy consumption.
Description
Technical field
The present invention relates to cavitation technique fields, more particularly to a kind of venturi hole-board test of the anti-cavitation corrosion of test material
Device.
Background technique
For a long time, cavitation corrosion drastically influences the performance of valve, water pump, water turbine overflowing component and Steam Screw and makes
Use the service life.The hydraulic turbine often causes efficiency to decline because local cavitation corrosion occurs for flow passage components, or even jeopardizes normal operation, causes very
The surprising energy and material loss.As the fluid machineries such as naval vessel, the hydraulic turbine constantly develop to high speed, high-power direction, cavitation corrosion
Problem becomes more prominent.This proposes requirements at the higher level to the anti-cavitation corrosion of material, and anti-cavitation corrosion investigation of materials, which is applied, becomes key.
Venturi orifice plate cavitation water hole is one of the means of the anti-cavitation corrosion of research material, uniformly distributed due to carrying orifice plate aperture,
Therefore formation vacuole is evenly dispersed, and cavitation intensity is lower, and the bubble collapse area not concentrated more, experimental period is longer, energy consumption
It is larger；Meanwhile position of the anti-cavitation corrosion test block in venturi water hole is non-adjustable, not can guarantee and is respectively positioned on sky under each operating condition
Concentration zones are lost, conventional efficient is lower.It is therefore a kind of that can to form the adjustable material in high-intensitive cavitation area, test block position anti-
Cavitation corrosion venturi orifice plate experimental rig becomes one of the key problem in technology of this field.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of venturi hole-board test of the anti-cavitation corrosion of test material dresses
It sets, the cavitation intensity of cavitation corrosion test section can be reinforced, shorten test period, reduce test energy consumption, can also adjust test block and exist
Relative position in Venturi tube achievees the effect that test specimen is both exposed to best cavitation test area under each hydraulic regime.
In order to solve the above-mentioned technical problem, one technical scheme adopted by the invention is that:
A kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material, including throat with cylindrical hole board slot
Venturi tube leading portion 1, Venturi tube back segment 2, convergence type orifice plate 3, test specimen adjust bolt 4, anti-cavitation corrosion test specimen 5, single ended bolt a6,
Single ended bolt b7, single ended bolt c8, single ended bolt d9, nut a10, nut b11, nut c12, nut d13, test specimen position are adjusted
Hole bolt a14, test specimen position adjustment hole bolt b15 and test specimen position adjustment hole bolt c16；Wherein Venturi tube leading portion 1 includes
Ring flange a101, Venturi tube back segment 2 include ring flange b201 and test specimen position adjustment hole group 202, test specimen position adjustment hole group
202 include test specimen position adjustment hole a2021, test specimen position adjustment hole b2022, test specimen position adjustment hole c2023 and test specimen position
Adjustment hole d2024；Throat forms protruding column bodily form cavity, this cavity after Venturi tube leading portion 1 and Venturi tube back segment 2 engage
As hole board slot, convergence type orifice plate 3 is built in wherein, and surface is fitted closely with cavity inner wall, 1 ring flange of Venturi tube leading portion
Each bolt hole of 2 ring flange b201 of a101 and Venturi tube back segment is overlapped, and each single ended bolt is fixed with each nut after penetrating,
Being connected and fixed for Venturi tube leading portion 1 and Venturi tube back segment 2 is completed, test specimen adjusts bolt 4 and penetrates 2 flaring of Venturi tube back segment
The test specimen position adjustment hole a2021 of section, anti-cavitation corrosion test specimen 5, which rotates, is fixed on the screw head that test specimen adjusting bolt 4 penetrates divergent segment
In portion.
The Venturi tube leading portion 1 and Venturi tube back segment 2 are the venturi that raised cylinder cavity is had by a throat
Pipeline section, obtained by the radial direction cutting of cylindrical cavity side bus midpoint, cylindrical cavity is located at throat end and and divergent segment
Entrance is connected, the inner wall side long 2cm of bus, circular cross section diameter 10cm；It is set at the segmentation lines of Venturi tube leading portion 1 after cutting
Set annular flange disk a101, the circumferentially-spaced an angle of 90 degrees of circular ring shape wall surface opens that there are four single ended bolt through-hole, each single ended bolts
Through-bore axis is equal with annular flange axial line spacing；The throat's cylindrical cavity and divergent segment entrance of Venturi tube back segment 2
It is connected, along Venturi axis direction, the edge at the position apart from Venturi tube divergent segment entrance 3cm, 5cm, 7cm, 9cm respectively
Radial direction has test specimen position adjustment hole a2021, test specimen position adjustment hole b2022, the test specimen position adjustment hole that diameter is 1cm
C2023 and test specimen position adjustment hole d2024, each test specimen position adjusts axially bored line and intersects with Venturi axis, from Venturi tube
Divergent segment outside wall surface is through to inner wall cut-off, and ring flange b201, circular ring shape wall surface is arranged at 2 segmentation lines of Venturi tube back segment
Circumferentially-spaced an angle of 90 degrees is opened there are four single ended bolt through-hole, each single ended bolt through-bore axis and annular flange axial line spacing phase
Deng, and single ended bolt through-bore axis adjusts axially bored line with test specimen position and intersects.
The convergence type orifice plate 3 is circular orifice, circular cross section diameter 10cm, with a thickness of 2cm；Along cylinder bore board shaft
Line is centrosymmetrically arranged 6 groups of apertures, and 60 ° are spaced between every group, and every group includes three apertures；The aperture angle in three holes in every group
Degree is different, and the aperture nearest apart from cylinder bore plate axis and its angle are 15 °, the aperture farthest apart from cylinder bore plate axis
It is 45 ° with its angle, the third aperture between above-mentioned two aperture and cylinder bore plate axis angle are 30 °, and are respectively opened
The extended line of centerline hole is intersected in a bit.
It is hexagonal single ended bolt that the test specimen, which adjusts bolt 4, and the circular cross section diameter of screw rod is 1cm, length 10cm,
Overall length is tapped with the screw thread matched with each adjustment hole.
It is hexagonal single ended bolt that the test specimen, which adjusts bolt 4, and the circular cross section diameter of screw rod is 1cm, length 10cm,
Overall length is tapped with the screw thread matched with each adjustment hole.
The anti-cavitation corrosion test specimen 5 be cuboid test specimen, long 4cm, high 4cm, wide 2cm, along its top surface geometric center vertically to
Under be provided with the threaded hole that diameter is 1cm, depth is 3cm, can with test specimen adjust 4 screw tip of bolt be closely connected；Examination
Part material is determined by specific test material.
The convergence type orifice plate 3 is built in the board slot of Venturi tube cylindrical hole, and each aperture center line converges at thereon
On Venturi tube divergent segment central axes a bit, hole postlaminar part will form high-intensity cavitation concentrated area when carrying out cavitation experiment.
The test specimen adjusting bolt 4 can be inserted different test specimen position adjustment holes and be changed according to different cavitation experiment conditions
Become its insertion position, selects vacuole under each operating condition that position of crumbling and fall is concentrated to carry out the anti-cavitation corrosion test of surface of test piece, change to realize
Become anti-cavitation corrosion test specimen 5 in the function of Venturi tube diffusion fragment position.
The beneficial effects of the present invention are:
A kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention, is converged using carrying among Venturi tube
Poly- formula orifice plate achievees the purpose that form the cavitation corrosion test section of high cavitation density and cavitation intensity, try relative to conventional anti-cavitation corrosion
Experiment device, cavitation corrosion experimental period shorten, and reduce test energy consumption；Have the function of adjusting test block position, in different hydraulic regimes
Test block can be adjusted down and be placed on the most violent region of cavitation corrosion, improve experiment effect.
Detailed description of the invention
Fig. 1 is a kind of first installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 2 is a kind of second installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 3 is a kind of third installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 4 is a kind of 4th installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 5 is a kind of 5th installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 6 is a kind of 6th installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 7 is a kind of 7th installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 8 is a kind of 8th installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Fig. 9 is a kind of 9th installation diagram of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Figure 10 is a kind of 3-D view of the venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention；
Figure 11 is three of convergence type orifice plate in a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention
Dimensional view；
Figure 12 is the flat of convergence type orifice plate in a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention
Face view；
Figure 13 is anti-cavitation corrosion test specimen in a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention
3-D view；
Figure 14 is Venturi tube leading portion in a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material of the present invention
3-D view.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description so that advantages of the present invention and
Feature can be easier to be readily appreciated by one skilled in the art, to make apparent specific boundary to protection scope of the present invention
It is fixed.
The present invention is a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material, including throat has cylindrical
Venturi tube leading portion 1, Venturi tube back segment 2, convergence type orifice plate 3, the test specimen of hole board slot adjust bolt 4, anti-cavitation corrosion test specimen 5, list
Hook bolt a6, single ended bolt b7, single ended bolt c8, single ended bolt d9, nut a10, nut b11, nut c12, nut d13, examination
Part position adjustment hole bolt a14, test specimen position adjustment hole bolt b15 and test specimen position adjustment hole bolt c16.Wherein Venturi tube
Leading portion 1 includes ring flange a101, and Venturi tube back segment 2 includes ring flange b201 and test specimen position adjustment hole group 202, test specimen position
Adjustment hole group 202 include test specimen position adjustment hole a2021, test specimen position adjustment hole b2022, test specimen position adjustment hole c2023 and
Test specimen position adjustment hole d2024.
As the preferred embodiment of the present invention, such as Fig. 1, Venturi tube back segment 2 is horizontally arranged, each test specimen position is adjusted
Axially bored line is straight up；Such as Fig. 2, test specimen is adjusted into the test specimen position tune that bolt 4 screws in 2 divergent segment of Venturi tube back segment clockwise
Knothole a2021, center of circle height of the height close to 2 divergent segment round entrance of Venturi tube back segment vertically of screw head position；
Such as Fig. 3, for the material of the required anti-cavitation corrosion of test, the internal thread hole for the anti-cavitation corrosion test specimen 5 being processed into screws in test specimen tune
The screw head for saving bolt 4 is fitted close the two, and anti-cavitation corrosion test specimen 5 is fixed on the screw head for adjusting bolt 4, and text
Venturi axis is perpendicular to the face where its long side and flash；Such as Fig. 4, by 1 face Venturi tube back segment of Venturi tube leading portion, 2 water
Placing flat, each bolt hole of ring flange a101 are aligned with each bolt hole of ring flange b201；Such as Fig. 5, convergence type orifice plate 3 is placed
In 1 throat's protruding column shape chamber of Venturi tube leading portion；Such as Fig. 6, being pushed into Venturi tube leading portion 1 in the horizontal direction makes itself and literary mound
In the engagement of pipe back segment 2 form complete venturi pipeline section, cylindrical side and venturi throat the end-boss circle of convergence type orifice plate 3
Column wall fits closely, perpendicular to horizontal direction, the front and back disc external margin position of convergence type orifice plate 3 and throat's end-boss
Circle ring inner wall fits closely before and after cylindrical cavity, and each bolt hole of ring flange a101 is overlapped with each bolt hole of ring flange b201；
Such as Fig. 7, single ended bolt a6, single ended bolt b7, single ended bolt c8 and single ended bolt d9 are respectively penetrated into ring flange a101 and flange
In each bolt hole that disk b201 is overlapped；Such as Fig. 8, nut a10, nut b11, nut c12 and nut d13 are fitted snugly in respectively
Single ended bolt a6, single ended bolt b7, single ended bolt c8 and single ended bolt d9 are pierced by the part of ring flange threaded hole；Such as Fig. 9, test specimen
The screw rod of position adjustment hole bolt a14, test specimen position adjustment hole bolt b15 and test specimen position adjustment hole bolt c16 distinguish face
Test specimen position adjustment hole b2022, test specimen position adjustment hole c2023 and test specimen position adjustment hole d2024, arrow direction pushes away along figure
Enter each bolt, precession each position adjustment hole clockwise is finally reached the assembly effect such as Figure 10, and convergence type orifice plate 3 is fixed at this time
In venturi throat end, each aperture of anti-5 face convergence type orifice plate 3 of cavitation corrosion test specimen forms the anti-cavitation corrosion of entire test material
The venturi orifice plate experimental rig of property.
Venturi tube leading portion 1 and Venturi tube back segment 2 are the venturi pipeline sections that raised cylinder cavity is had by a throat,
Obtained by the radial direction cutting of cylindrical cavity side bus midpoint, cylindrical cavity be located at throat end and with divergent segment entrance phase
Even, the inner wall side long 2cm of bus, circular cross section diameter 10cm.Such as Fig. 1, throat's cylindrical cavity of Venturi tube back segment 2 with
Divergent segment entrance is connected, along Venturi axis direction, respectively apart from Venturi tube divergent segment entrance 3cm, 5cm, 7cm, 9cm
Position at radially have diameter be 1cm test specimen position adjustment hole a2021, test specimen position adjustment hole b2022, test specimen
Position adjustment hole c2023 and test specimen position adjustment hole d2024, each test specimen position adjust axially bored line and intersect with Venturi axis,
It is through to inner wall cut-off from Venturi tube divergent segment outside wall surface, ring flange b201 is set at 2 segmentation lines of Venturi tube back segment,
The circumferentially-spaced an angle of 90 degrees of circular ring shape wall surface is opened there are four single ended bolt through-hole, each single ended bolt through-bore axis and annular flange axis
Heart line spacing is equal, and single ended bolt through-bore axis adjusts axially bored line with test specimen position and intersects.Such as Figure 14, venturi after cutting
Annular flange disk a101 is set at the segmentation lines of pipe leading portion 1, and the circumferentially-spaced an angle of 90 degrees of circular ring shape wall surface is opened there are four single head
Bolt hole, each single ended bolt through-bore axis are equal with annular flange axial line spacing.
Such as Figure 11, convergence type orifice plate 3 is circular orifice, circular cross section diameter 10cm, with a thickness of 2cm；Along cylinder bore
Plate axis is centrosymmetrically arranged 6 groups of apertures, and 60 ° are spaced between every group, and every group includes three apertures.Such as Figure 12, from left to right according to
Secondary front view, rearview and the cross-sectional view along front view central axes for convergence type orifice plate 3, three holes in every group
Blowing angle is different, and the aperture nearest apart from cylinder bore plate axis and its angle are 15 °, farthest apart from cylinder bore plate axis
Aperture and its angle be 45 °, the third aperture between above-mentioned two aperture and cylinder bore plate axis angle are 30 °, and
And the extended line of each aperture center line is intersected in a bit.
Such as Figure 13, anti-cavitation corrosion test specimen 5 is cuboid test specimen, and bottom surface long side is the length of cuboid test specimen, and bottom surface short side is length
The width of cube test specimen, the vertical edge of cuboid test specimen are the height of cuboid test specimen, long 4cm, wide 2cm, high 4cm；It is several along its top surface
What center vertical is provided with downwards the threaded hole that diameter is 1cm, depth is 3cm, and it is close can to adjust 4 screw tip of bolt with test specimen
It is cooperatively connected；Test specimen structure is fixed, and material is determined by specific test material.
Make it in difference to adjust position of the anti-cavitation corrosion test specimen 5 in Venturi tube divergent segment in conjunction with Fig. 3 and Figure 10
It is respectively positioned on the most violent region of cavitation corrosion under flow operating mode, should first screw out anti-cavitation corrosion test specimen 5, removes and test specimen is adjusted into spiral shell after test specimen
Bolt 4 rotates counterclockwise, so that screw head moves up in the adjustment hole a2021 of retraction test specimen position, observes text after changing flow parameter
Venturi divergent segment cavitation situation marks intensity contrast most visibility point in cavitation zone to test as the test specimen under this operating condition
Position, it is assumed that this position is nearest away from test specimen position adjustment hole b2022, then should first screw out and adjust for sealed test piece position counterclockwise
The test specimen position adjustment hole bolt a14 of hole b2022 adjusts bolt 4 screwing out test specimen counterclockwise, test specimen is adjusted bolt 4 and examination
Part position adjustment hole bolt a14 transposition screws in test specimen position adjustment hole with test specimen position adjustment hole bolt a14 clockwise
A2021 is sealed against, and is adjusted bolt 4 with test specimen and is screwed in test specimen position adjustment hole b2022, screw head height and convergence clockwise
3 center of circle of formula orifice plate height is close, and anti-cavitation corrosion test specimen 5 is screwed in test specimen and adjusts 4 screw head of bolt, is changing anti-cavitation corrosion test specimen 5
Cavitation corrosion most violent region can be still located at when being tested under the flow operating mode after change, shorten experimental period, reduce experiment consumption
Energy.
When water flow is smaller in venturi orifice plate experimental rig, 3 rear portion vacuole compact district of convergence type orifice plate is shorter, flaring
Water flow velocity is lower in section, and pressure is higher, and bubble collapse concentrates on apart from the closer position of divergent segment entrance, therefore anti-cavitation corrosion is tried
Part is placed in the closer position of divergent segment entrance, is exposed to the most violent region of cavitation corrosion, cavitation test efficiency highest；Work as text
When water flow is larger in hole-board test device in mound, 3 rear portion vacuole compact district of convergence type orifice plate is longer, in divergent segment water flow velocity compared with
Height, pressure is lower, and bubble collapse is concentrated on apart from divergent segment entrance remote position, therefore anti-cavitation corrosion test specimen is placed in flaring
Section entrance remote position, is exposed to the most violent region of cavitation corrosion, cavitation test efficiency highest.
In conclusion the present invention reaches to form high cavitation density and sky by carrying convergence type orifice plate among Venturi tube
The purpose for changing the cavitation corrosion test section of intensity shortens relative to conventional anti-cavitation corrosion experimental rig, reduces test cavitation corrosion experimental period
Energy consumption；Have the function of adjusting test block position, test block can be adjusted under different hydraulic regimes and be placed on cavitation corrosion most
Violent region improves experiment effect.
Claims (8)
1. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material, it is characterised in that: have cylindrical body including throat
Venturi tube leading portion (1), Venturi tube back segment (2), convergence type orifice plate (3), the test specimen of shape hole board slot adjust bolt (4), anti-sky
Lose test specimen (5), single ended bolt a (6), single ended bolt b (7), single ended bolt c (8), single ended bolt d (9), nut a (10), nut b
(11), nut c (12), nut d (13), test specimen position adjustment hole bolt a (14), test specimen position adjustment hole bolt b (15) and examination
Part position adjustment hole bolt c (16)；Wherein Venturi tube leading portion (1) includes ring flange a (101), and Venturi tube back segment (2) includes
Ring flange b (201) and test specimen position adjustment hole group (202), test specimen position adjustment hole group (202) include test specimen position adjustment hole a
(2021), test specimen position adjustment hole b (2022), test specimen position adjustment hole c (2023) and test specimen position adjustment hole d (2024)；Text
Throat forms protruding column bodily form cavity after venturi leading portion (1) and Venturi tube back segment (2) engagement, this cavity is as orifice plate
Slot, convergence type orifice plate (3) are built in wherein, and surface is fitted closely with cavity inner wall, Venturi tube leading portion (1) ring flange a (101)
It being overlapped with each bolt hole of Venturi tube back segment (2) ring flange b (201), each single ended bolt is fixed with each nut after penetrating,
Being connected and fixed for Venturi tube leading portion (1) and Venturi tube back segment (2) is completed, after test specimen adjusting bolt (4) penetrates Venturi tube
The test specimen position adjustment hole a (2021) of section (2) divergent segment, anti-cavitation corrosion test specimen (5) rotation are fixed on test specimen adjusting bolt (4) and are penetrated
The screw head of divergent segment.
2. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material according to claim 1, it is characterised in that:
The Venturi tube leading portion (1) and Venturi tube back segment (2) are the venturi pipeline sections that raised cylinder cavity is had by a throat,
Obtained by the radial direction cutting of cylindrical cavity side bus midpoint, cylindrical cavity be located at throat end and with divergent segment entrance phase
Even, the inner wall side long 2cm of bus, circular cross section diameter 10cm；Circle is set at the segmentation lines of Venturi tube leading portion (1) after cutting
Annular flange dish a (101), the circumferentially-spaced an angle of 90 degrees of circular ring shape wall surface are opened there are four single ended bolt through-hole, and each single ended bolt is logical
Axially bored line is equal with annular flange axial line spacing；The throat's cylindrical cavity and divergent segment entrance of Venturi tube back segment (2)
It is connected, along Venturi axis direction, the edge at the position apart from Venturi tube divergent segment entrance 3cm, 5cm, 7cm, 9cm respectively
Radial direction has test specimen position adjustment hole a (2021), test specimen position adjustment hole b (2022), the test specimen position tune that diameter is 1cm
Knothole c (2023) and test specimen position adjustment hole d (2024), each test specimen position adjust axially bored line and intersect with Venturi axis, from
Venturi tube divergent segment outside wall surface is through to inner wall cut-off, and ring flange b (201) are arranged at Venturi tube back segment (2) segmentation lines,
Its circumferentially-spaced an angle of 90 degrees of circular ring shape wall surface is opened there are four single ended bolt through-hole, each single ended bolt through-bore axis and annular flange
Axial line spacing is equal, and single ended bolt through-bore axis adjusts axially bored line with test specimen position and intersects.
3. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material according to claim 1, it is characterised in that:
The convergence type orifice plate (3) is circular orifice, circular cross section diameter 10cm, with a thickness of 2cm；Along cylinder bore plate axis center
6 groups of apertures are arranged symmetrically, 60 ° are spaced between every group, every group includes three apertures；The blowing angle in three holes in every group is not
Together, the aperture nearest apart from cylinder bore plate axis and its angle are 15 °, the aperture farthest apart from cylinder bore plate axis and its
Angle is 45 °, and the third aperture between above-mentioned two aperture and cylinder bore plate axis angle are 30 °, and in each aperture
The extended line of heart line is intersected in a bit.
4. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material according to claim 1, it is characterised in that:
It is hexagonal single ended bolt that the test specimen, which adjusts bolt (4), and the circular cross section diameter of screw rod is 1cm, length 10cm, overall length
It is tapped with the screw thread matched with each adjustment hole.
5. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material according to claim 1, it is characterised in that:
The test specimen position adjustment hole bolt a (14), test specimen position adjustment hole bolt b (15) and test specimen position adjustment hole bolt c (16)
Structure is identical, is hexagonal single ended bolt, and the circular cross section diameter of screw rod is 1cm, length 1cm, and overall length is tapped with and each tune
The screw thread that knothole matches.
6. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material according to claim 1, it is characterised in that:
The anti-cavitation corrosion test specimen (5) is cuboid test specimen, and long 4cm, high 4cm, wide 2cm is provided with straight down along its top surface geometric center
The threaded hole that diameter is 1cm, depth is 3cm can adjust bolt (4) screw tip with test specimen and be closely connected；Test specimen material
Material is determined by specific test material.
7. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material according to claim 1, it is characterised in that:
The convergence type orifice plate (3) is built in the board slot of Venturi tube cylindrical hole, and each aperture center line converges at venturi thereon
On pipe divergent segment central axes a bit, hole postlaminar part will form high-intensity cavitation concentrated area when carrying out cavitation experiment.
8. a kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material according to claim 1, it is characterised in that:
The test specimen, which adjusts bolt (4), can be inserted different test specimen position adjustment holes, according to different cavitation experiment conditions, changes it and inserts
Enter position, selects vacuole under each operating condition that position of crumbling and fall is concentrated to carry out the anti-cavitation corrosion test of surface of test piece, change anti-sky to realize
Test specimen (5) are lost in the function of Venturi tube diffusion fragment position.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025563.9A CN109459331A (en) | 2019-01-11 | 2019-01-11 | A kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910025563.9A CN109459331A (en) | 2019-01-11 | 2019-01-11 | A kind of venturi orifice plate experimental rig of the anti-cavitation corrosion of test material |
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| CN109459331A true CN109459331A (en) | 2019-03-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608992A (en) * | 2019-10-17 | 2019-12-24 | 浙江大学 | Probe device and method for testing high-temperature corrosion resistance of metal material on heating surface of waste incineration boiler |
| US20210252447A1 (en) * | 2020-02-17 | 2021-08-19 | Devpreet Jassal | Slot venturi with aperture control |
-
2019
- 2019-01-11 CN CN201910025563.9A patent/CN109459331A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608992A (en) * | 2019-10-17 | 2019-12-24 | 浙江大学 | Probe device and method for testing high-temperature corrosion resistance of metal material on heating surface of waste incineration boiler |
| US20210252447A1 (en) * | 2020-02-17 | 2021-08-19 | Devpreet Jassal | Slot venturi with aperture control |
| US11612849B2 (en) * | 2020-02-17 | 2023-03-28 | Devpreet Jassal | Slot venturi with aperture control |
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