CN108572117A - A kind of rotating-spray abrasion integrated experiment device - Google Patents
A kind of rotating-spray abrasion integrated experiment device Download PDFInfo
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- CN108572117A CN108572117A CN201810204878.5A CN201810204878A CN108572117A CN 108572117 A CN108572117 A CN 108572117A CN 201810204878 A CN201810204878 A CN 201810204878A CN 108572117 A CN108572117 A CN 108572117A
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- rotating
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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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
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Abstract
The invention discloses a kind of rotating-sprays to denude integrated experiment device, including mixed water tank, and blender is provided in mixed water tank.Further include dynamical system, voltage-stabilizing system, flowmeter, control system and turntable control system.Mixed water tank is connected by pipeline a with dynamical system, and dynamical system is connected by valve pipe a with voltage-stabilizing system, and voltage-stabilizing system is connected by pipeline b with flowmeter, and flowmeter is connected by pipeline c with turntable control system, and injection apparatus is provided in turntable control system.Dynamical system, voltage-stabilizing system and turntable control system are connected by conducting wire b, conducting wire c, conducting wire d with control system respectively.The present invention can individually carry out cavitation test but also individually carry out wear test while can also carry out the two Combined Trials, and it can more actually simulate hydraulic actual motion condition, reduce error, it is easy to summarize related damages rule, protecting hydraulic in the process of running has great directive significance.
Description
Technical field
The invention belongs to hydraulic failure test determination techniques fields, and in particular to a kind of comprehensive examination of rotating-spray abrasion
Experiment device.
Background technology
Hydraulic is widely used in the field of energy source power such as hydroelectric generation, irrigation and drainage, chemical industry and oil.It was run in water dispenser
Cavitation corrosion, abrasion and the synergy of the two-ablation destruction problem are inevitable in journey.Hydraulic abrasion refers in operational process
Silt, metal impurities and the hard particles that middle medium contains generate percussion to flow passage components surface especially blade and cause material
Material fatigue wear fall off cause it is thinning shorten, cause conveyance capacity to reduce, efficiency decline.Cavitation corrosion refers to hydraulic in operational process
In vacuole less than saturated vapour pressure is precipitated due to local pressure, vacuole fall off after into higher-pressure region crumble and fall to runner,
Head cover and blade outer rim damage, and scholar successively proposes electrochemical action during being furtherd investigate to cavitation erosion mechanism
Mechanical function opinion is referred to by the effect of, calorifics.It is that there is close abrasion, cavitation corrosion and the two joint in the process of running that abrasion, which then refers to,
Effect.Abrasion brings challenges to safety, reliability and economy that hydraulic is run.
Hydraulic turbine wetted surfaces and water conservancy project are caused to build with abrasion due to the prolonged erosion of silt for the hydraulic turbine
It is serious to build surface breakdown, turbine characteristics is caused to be severely impacted, efficiency is brought to decline the even consequences such as shutdown maintenance maintenance,
The operating cost for increasing power station, causes economic benefit to decline, at the same time sand erosion while along with cavitation generation
Cavitation erosion is generated, the two cooperates with flow passage components and the waterwork surface of the hydraulic turbine, is transported to the safety in power station
Row brings harm.In addition this abrasion, cavitation corrosion and ablation destruction are also great to the harm of pump, mud contained in pumped (conveying) medium
Husky, metal impurities and other hard particles can cause being seriously worn for pump, cause blade to shorten, impeller diameter becomes smaller, water leakage
Increase, change so as to cause characteristic curve of pump, pump operating point is made to deviate to the left, water yield reduces efficiency and declines, empty
Erosion performance parameter decline further results in even more serious ablation destruction.Therefore, associated wear, cavitation corrosion and abrasion test is carried out to grind
Study carefully to protect hydraulic in the process of running and there is great directive significance.
The research for undermining abrasion for the cavitation corrosion of hydraulic, impact grinding at present is still not perfect, especially for failure mechanism
The also opposite shortcoming of research.Researcher mainly by rotating circular disk experimental rig, magnetostriction apparatus and venturi experimental rig into
Row correlation cavitation test research.It is ground by rotary gap formula abrasion test device, flow around type abrasion test device and rotating-spray
Damage device carries out associated wear experimental study.But it can individually carry out cavitation test but also individually carry out wear test while can also
It is also fewer to carry out the two combined test device, and also is difficult to accomplish and hydraulic actual motion condition phase during testing
Unanimously.It is easy to cause large error or is difficult to summary and induction ablation destruction related law.Therefore, developing one kind can individually carry out
Cavitation test can individually carry out wear test while can also carry out the two Combined Trials again, and can more actually simulate hydraulic
Actual motion condition reduces error, is easy to summarize the experimental rig of related damages rule to be necessary.
Invention content
The object of the present invention is to provide a kind of rotating-sprays to denude integrated experiment device, solves existing in the prior art
Cavitation test can individually be carried out but also individually carry out wear test while both can also to carry out combined test device fewer, and
And it also is difficult to accomplish during experiment consistent with hydraulic actual motion condition.It is easy to cause large error or is difficult to summarize
The problem of concluding ablation destruction related law.
The technical solution adopted in the present invention is a kind of rotating-spray abrasion integrated experiment device, including mixed water tank, mixes water
Blender is provided in case.Further include dynamical system, voltage-stabilizing system, flowmeter, control system and turntable control system.Mixed water tank
It is connected with dynamical system by pipeline a, dynamical system is connected by valve pipe a with voltage-stabilizing system, and voltage-stabilizing system passes through pipeline b
It is connected with flowmeter, flowmeter is connected by pipeline c with turntable control system, and injection apparatus is provided in turntable control system.
Dynamical system, voltage-stabilizing system and turntable control system are connected by conducting wire b, conducting wire c, conducting wire d with control system respectively.
The features of the present invention also characterized in that：
Dynamical system includes booster pump, and mixed water tank is connected by pipeline a with booster pump.Voltage-stabilizing system includes vacuum tank and sky
Air compressor, booster pump are connected by valve pipe a with vacuum tank, and vacuum tank is connected by pipeline b with flowmeter, and vacuum tank is also
It is connected with air compressor by valve pipe b.Control system includes switch board.Turntable control system includes rotating circular disk, spray
Injection device and motor.Injection apparatus includes the disk cover of rotating circular disk and the nozzle that is set in disk cover.Flowmeter passes through
Pipeline c is connected with the disk cover of rotating circular disk, and the disk cover of rotating circular disk is fixedly connected with rotating circular disk, constitutes a closing sky
Between, rotating circular disk is fixedly connected with motor.Booster pump, air compressor and motor pass through conducting wire b, conducting wire c, conducting wire respectively
D switch boards are connected.
Booster pump is diaphragm type booster pump.Vacuum tank is two level vacuum tank.Flow is calculated as electromagnetic flowmeter.Motor is to adjust
Electric motor with speed.
Pressure gauge a, pressure gauge b and pressure gauge c are respectively arranged with before and after vacuum tank, rotating circular disk.
Further include recovery tank and back water pump.Rotating circular disk is connected by valve pipe c with recovery tank, and recovery tank passes through pipeline
D is connected with back water pump, and back water pump is connected with pipeline e, and pipeline e is connected into the water inlet of the mixed water tank.
Further include cooling system, the cooling system includes heat exchanger tube and insulating box, and heat exchanger tube is set in mixed water tank, is changed
The water inlet of heat pipe is connected by pipe a with the water outlet of insulating box, and water outlet is connected by pipe b with the water inlet of insulating box
It is logical, form a loop circulation system.
Heat exchanger tube helically rises pattern and is fixed on the inner wall of mixed water tank.
It is both provided with temperature sensor in mixed water tank and on rotating circular disk, temperature sensor passes through conducting wire and switch board phase
Even.
The beneficial effects of the invention are as follows：
Cavitation test can individually be carried out but also individually carry out wear test while the two Combined Trials can also be carried out, and energy
Hydraulic actual motion condition is more actually simulated, error is reduced, is easy to summarize related damages rule, for hydraulic
Protection has great directive significance in the process of running.
Description of the drawings
Fig. 1 is the structural schematic diagram of rotating-spray abrasion integrated experiment device of the present invention.
In figure, 1. mixed water tanks, 2. blenders, 3. heat exchanger tubes, 4. insulating boxs, 5. booster pumps, 6. vacuum tanks, 7. flowmeters,
8. air compressor, 9. switch boards, 10. rotating circular disks, 11. motor, 12. recovery tanks, 13. back water pumps, 14. pipe a, 15. pipes
B, 16. pipeline a, 17. valve pipe a, 18. conducting wire a, 19. conducting wire b, 20. valve pipe b, 21. conducting wire c, 22. conducting wire d, 23.
Pipeline b, 24. pipeline c, 25. valve pipe c, 26. pipeline d, 27. pipeline e, 28. pressure gauge a, 29. pressure gauge b, 30. pressure gauges
c。
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Integrated experiment device, including mixed water tank 1 are denuded in rotating-spray of the present invention, and blender 2 is provided in mixed water tank 1.Also
Including dynamical system, voltage-stabilizing system, flowmeter 7, turntable control system and control system.Mixed water tank 1 passes through pipeline a16 and power
System is connected, and dynamical system is connected by valve pipe a17 with voltage-stabilizing system, and voltage-stabilizing system passes through pipeline b23 and 7 phase of flowmeter
Even, flowmeter 7 is connected by pipeline c24 with turntable control system, and injection apparatus is provided in turntable control system.Dynamical system
System, voltage-stabilizing system and turntable control system are connected by conducting wire b19, conducting wire c 21, conducting wire d22 with control system respectively.
Further：
Dynamical system includes booster pump 5, and mixed water tank 1 is connected by pipeline a16 with booster pump 5.Voltage-stabilizing system includes voltage stabilizing
Tank 6 and air compressor 8, booster pump 5 are connected by valve pipe a17 with vacuum tank 6, and vacuum tank 6 passes through pipeline b23 and flow
Meter 7 is connected, and vacuum tank 6 is also connected by valve pipe b20 with air compressor 8.Control system includes switch board 9.Turntable control
System processed includes rotating circular disk 10, injection apparatus and motor 11.Injection apparatus includes disk cover and the setting of rotating circular disk 10
In the nozzle in disk cover.Flowmeter 7 is connected by pipeline c24 with the disk cover of rotating circular disk 10, the turntable of rotating circular disk 10
Lid is fixedly connected with rotating circular disk 10, constitutes an enclosure space, and rotating circular disk 10 is fixedly connected with motor 11.Booster pump 5,
Air compressor 8 and motor 11 are connected by conducting wire b19, conducting wire c 21, conducting wire d22 with switch board 9 respectively.
Further：
Booster pump 5 is diaphragm type booster pump.Vacuum tank 6 is two level vacuum tank.Flowmeter 7 is electromagnetic flowmeter.Motor
11 be variable-speed motor.
Further：
Pressure gauge a28, pressure gauge b29 and pressure are respectively arranged with before vacuum tank 6, rotating circular disk 10 and after rotating circular disk 10
Table c30.
Further：
Further include recovery tank 12 and back water pump 13.Rotating circular disk 10 is connected by valve pipe c25 with recovery tank 12, return water
Case 12 is connected by pipeline d26 with back water pump 13, and back water pump 13 is connected with pipeline e27, and pipeline e27 is connected into the water inlet of mixed water tank 1
Mouthful.
Further：
Further include cooling system, cooling system includes heat exchanger tube 3 and insulating box 4, and heat exchanger tube 3 is set in mixed water tank 1, changes
The water inlet of heat pipe 3 is connected by pipe a14 with the water outlet of insulating box 4, water outlet by pipe b15 and insulating box 4 into
The mouth of a river is connected, and forms a loop circulation system.
Further：
Heat exchanger tube 3 helically rises pattern and is fixed on the inner wall of mixed water tank 1.
Further：
Temperature sensor is both provided in mixed water tank 1 and on rotating circular disk 10, temperature sensor passes through conducting wire and control
Cabinet 9 is connected.
The preferred embodiment of rotating-spray of the present invention abrasion integrated experiment device is：
As shown in Figure 1, include mixed water tank 1, be provided with blender 2 and heat exchanger tube 3 in mixed water tank 1, heat exchanger tube 3 helically on
Pattern is risen to be fixed on the inner wall of mixed water tank 1, the water inlet of heat exchanger tube 3 is connected by pipe a14 with the water outlet of insulating box 4,
Its water outlet is connected by pipe b15 with the water inlet of insulating box 4, and a loop circulation system is formed.Insulating box 4 passes through conducting wire
A18 is connected with switch board 9, and switch board 9 is the control system of rotating-spray abrasion integrated experiment device of the present invention.Heat exchanger tube 3 with
Insulating box 4 collectively constitutes cooling system, for reducing the temperature of medium in mixed water tank 1.Mixed water tank 1 passes through pipeline a16 and supercharging
Pump 5 is connected, and booster pump 5 is diaphragm type booster pump, and booster pump 5 is dynamical system, and compbined test is denuded for rotating-spray of the present invention
Device provides power.Booster pump 5 is connected by valve pipe a17 with vacuum tank 6, vacuum tank 6 be two level vacuum tank, for every
The outlet of membrane type booster pump 5 has pressure incoming to be adjusted.Pressure gauge a28 is provided on vacuum tank 6, for monitoring in vacuum tank 6
Pressure.Vacuum tank 6 is connected by valve pipe b20 with air compressor 8, and air compressor 8 passes through conducting wire c21 and switch board 9
It is connected, air compressor 8 is for providing a certain amount of regulated air.Booster pump 5 is connected by conducting wire b19 with switch board 9 simultaneously, surely
Pressure tank 6 forms the voltage-stabilizing system that integrated experiment device is denuded in rotating-spray of the present invention with air compressor 8 together.Vacuum tank 6 is logical
Piping b23 is connected with flowmeter 7, and flowmeter 7 is electromagnetic flowmeter, turn that flowmeter 7 passes through pipeline c24 and rotating circular disk 10
Disk cover is connected, and disk cover and the rotating circular disk 10 of rotating circular disk 10 snap together, and constitutes an enclosure space, rotating circular disk 10
It is fixedly linked with motor 11, motor 11 is connected by conducting wire d22 with switch board 9, and motor 11 is variable-speed motor, speed governing
Motor 11 is rotated for controlling rotating circular disk 10 with different rotating speeds, and 10 rotation speed change of rotating circular disk ranging from 0-
2900r/min, the disk cover of rotating circular disk 10 are internally provided with the nozzle of four a diameter of 2.5mm, can be according to booster pump 5
Flow changes and the change of 10 rotating speed of rotating circular disk obtains the speed and angle of different injections by speed triangle.Rotating circular disk
10 front and back is respectively arranged with pressure gauge b29 and pressure gauge c30, for monitoring the pressure before and after rotating circular disk 10.Rotating circular disk
10 and motor 11 collectively constitute the turntable control system of rotating-spray of the present invention abrasion integrated experiment device.Rotating circular disk 10
The injection apparatus of the nozzle, that is, turntable control system for four a diameter of 2.5mm being arranged inside disk cover.Rotating circular disk 10 passes through
Valve pipe c25 is connected with recovery tank 12, and recovery tank 12 is connected by pipeline d26 with back water pump 13, back water pump 13 and pipeline e27
It is connected, pipeline e27 is connected into the water inlet of the mixed water tank 1, and it is a cycle to make rotating-spray abrasion integrated experiment device of the present invention
System.
Cooling system is for reducing the temperature of medium in mixed water tank 1, and the origin of heat of medium is in rotating circular disk in mixed water tank 1
The heat generated at 10.When the temperature in mixed water tank 1 and on rotating circular disk 10 increases, in mixed water tank 1 and on rotating circular disk 10
Temperature data can be transferred to switch board 9 by the temperature sensor of setting, then, you can manually opened cooling system, in heat exchanger tube 3
Cooling water and mixed water tank 1 in medium carry out heat exchange, be medium cooling in mixed water tank 1.
The course of work that rotating-spray of the present invention abrasion integrated experiment device carries out abrasion test is：By silt carrying flow mixed
Agitated device 2 realizes the mixing of solid-liquid two-phase flow homogeneous in water tank 1, and will uniformly mix two phase flow by diaphragm type booster pump 5 increases
It presses and is delivered to the progress voltage stabilizing adjusting of two level vacuum tank 6 and reach adjusting pressure fluctuation effect.There is pressure arsenicbearing gold ores circulation after voltage stabilizing
The rotating circular disk 10 driven from four uniformly distributed nozzle jet impacts by speed regulating motor 11 after electromagnetic flowmeter 7 is crossed, is reached to rotation
Turn the abrasive effect of 10 surface inserting test specimen of disk.The silt carrying flow of discharge enters recovery tank 12 and returns to mixed water tank through back water pump 13
1。
The course of work that rotating-spray of the present invention abrasion integrated experiment device carries out wear test is：With above-mentioned abrasion test
The course of work it is similar, differ only in, close valve pipe b20, it is empty that air compressor 8 does not provide a certain amount of voltage stabilizing
Gas.
The course of work that rotating-spray of the present invention abrasion integrated experiment device carries out wear test is：With above-mentioned abrasion test
The course of work it is similar, differ only in, the medium in mixed water tank 1 becomes pure water rather than arsenicbearing gold ores medium.
Claims (8)
1. integrated experiment device is denuded in a kind of rotating-spray, it is characterised in that：Including mixed water tank (1), set in the mixed water tank (1)
It is equipped with blender (2)；Further include dynamical system, voltage-stabilizing system, flowmeter (7), turntable control system and control system；It is described mixed
Water tank (1) is connected by pipeline a (16) with dynamical system, and the dynamical system passes through valve pipe a (17) and voltage-stabilizing system phase
Even, the voltage-stabilizing system is connected by pipeline b (23) with flowmeter (7), and the flowmeter (7) passes through pipeline c (24) and turntable
Control system is connected, and injection apparatus is provided in the turntable control system；The dynamical system, voltage-stabilizing system and turntable control
System is connected by conducting wire b (19), conducting wire c (21), conducting wire d (22) with control system respectively.
2. integrated experiment device is denuded in rotating-spray as described in claim 1, it is characterised in that：The dynamical system includes increasing
Press pump (5), the mixed water tank (1) are connected by pipeline a (16) with booster pump (5)；The voltage-stabilizing system include vacuum tank (6) and
Air compressor (8), the booster pump (5) are connected by valve pipe a (17) with vacuum tank (6), and the vacuum tank (6) passes through
Pipeline b (23) is connected with flowmeter (7), and the vacuum tank (6) is also connected by valve pipe b (20) with air compressor (8)；
The control system includes switch board (9)；The turntable control system includes rotating circular disk (10), injection apparatus and motor
(11)；The injection apparatus includes the disk cover of rotating circular disk (10) and the nozzle that is set in disk cover；The flowmeter (7)
It is connected with the disk cover of rotating circular disk (10) by pipeline c (24), the disk cover and rotating circular disk of the rotating circular disk (10)
(10) it is fixedly connected, constitutes an enclosure space, the rotating circular disk (10) is fixedly connected with motor (11)；The booster pump
(5), air compressor (8) and motor (11) pass through conducting wire b (19), conducting wire c (21), conducting wire d (22) and switch board (9) respectively
It is connected.
3. integrated experiment device is denuded in rotating-spray as claimed in claim 2, it is characterised in that：The booster pump (5) be every
Membrane type booster pump；The vacuum tank (6) is two level vacuum tank；The flowmeter (7) is electromagnetic flowmeter；The motor (11)
For variable-speed motor.
4. integrated experiment device is denuded in rotating-spray as claimed in claim 3, it is characterised in that：The vacuum tank (6), rotation
It is respectively arranged with pressure gauge a (28), pressure gauge b (29) and pressure gauge c (30) before disk (10) and after rotating circular disk (10).
5. integrated experiment device is denuded in rotating-spray as described in claim 1, it is characterised in that：Further include recovery tank (12) and
Back water pump (13)；The rotating circular disk (10) is connected by valve pipe c (25) with recovery tank (12), and the recovery tank (12) is logical
Piping d (26) is connected with back water pump (13), and the back water pump (13) is connected with pipeline e (27), and the pipeline e (27) is connected into institute
State the water inlet of mixed water tank (1).
6. integrated experiment device is denuded in rotating-spray as claimed in claim 5, it is characterised in that：Further include cooling system, institute
It includes heat exchanger tube (3) and insulating box (4) to state cooling system, and the heat exchanger tube (3) is set in mixed water tank (1), heat exchanger tube (3)
Water inlet is connected by pipe a (14) with the water outlet of insulating box (4), water outlet by pipe b (15) and insulating box (4) into
The mouth of a river is connected, and forms a loop circulation system.
7. integrated experiment device is denuded in rotating-spray as claimed in claim 6, it is characterised in that：The heat exchanger tube (3) is in spiral shell
Liter pattern is screwed on to be fixed on the inner wall of mixed water tank (1).
8. integrated experiment device is denuded in rotating-spray as claimed in claim 7, it is characterised in that：In the mixed water tank (1) and
Temperature sensor is both provided on rotating circular disk (10), the temperature sensor is connected by conducting wire with switch board (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204878.5A CN108572117A (en) | 2018-03-13 | 2018-03-13 | A kind of rotating-spray abrasion integrated experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810204878.5A CN108572117A (en) | 2018-03-13 | 2018-03-13 | A kind of rotating-spray abrasion integrated experiment device |
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| Publication Number | Publication Date |
|---|---|
| CN108572117A true CN108572117A (en) | 2018-09-25 |
Family
ID=63573999
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810204878.5A Pending CN108572117A (en) | 2018-03-13 | 2018-03-13 | A kind of rotating-spray abrasion integrated experiment device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111458244A (en) * | 2019-12-17 | 2020-07-28 | 国网四川省电力公司映秀湾水力发电总厂 | Mixed-flow water turbine blade wing type abrasion test device |
| CN113466074A (en) * | 2021-07-15 | 2021-10-01 | 三峡大学 | Water turbine abrasion test equipment and method |
| CN114018201A (en) * | 2021-11-04 | 2022-02-08 | 河海大学 | Experimental device and method for measuring notch abrasion of impulse turbine |
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Application publication date: 20180925 |