CN102854078A - Abrasion testing machine - Google Patents
Abrasion testing machine Download PDFInfo
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- CN102854078A CN102854078A CN2012103451899A CN201210345189A CN102854078A CN 102854078 A CN102854078 A CN 102854078A CN 2012103451899 A CN2012103451899 A CN 2012103451899A CN 201210345189 A CN201210345189 A CN 201210345189A CN 102854078 A CN102854078 A CN 102854078A
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Abstract
The invention discloses a novel abrasion testing machine. The water inlet of a high pressure frequency variable pump is connected with a water tank; a water outlet is connected with the water inlet end of an abrasion spray gun arranged on the top of an abrasion test cabin by a high pressure water pipe; and an abrasion test sample is partially placed on a sample platform positioned on the middle lower part of the abrasion test cabin. The key part of the abrasion testing machine is the abrasion test cabin, a mixing process of sand grains and water is finished in the abrasion spray gun during the operation process of the testing machine, the supply of the sand grains is realized by vacuum self-suction function of high speed water flow formed in the abrasion spray gun, and a pump system is not in contact with sand-containing water, so that the destroy of the sand grains and the pump system is avoided, the interactive function of the sand grains and a hydroelectric generating set flow passage component is matched in the test process; and by utilizing the testing machine, important parameters of sand-containing water flow velocity, sand contents, sand categories, attract angle of sand-containing water to a material can be controlled and adjusted.
Description
Technical field: the present invention relates to a kind of abrader.
Background technology: the most of rivers of China all are high silt-laden rivers, the Cavitation that the current that silt content is high follow high water head to bring to the wearing and tearing of turbine blade has a strong impact on effective operation in power station, and bring huge economic loss, this problem is along with high water head, the increase of large flow Hydraulic and Hydro-Power Engineering and becoming increasingly conspicuous, so having caused widely, the abrasion of water turbine overflowing component and Protective Research pay close attention to, abrasion test device commonly used has at present: magnetostriction apparatus, rotation cavitation corrosion instrument, rotating spray device, water hole cavitation corrosion device and in-site modeling high-velocity ﹠ sediment-laden flow abrasion test method, these equipment are being brought into play very large effect in the abrasion test research field, still exist simultaneously some restrictions and defective, as: the test condition less stable, simulation existing problems to actual flow-shape, the parameter value range of adjustment is little, and numerical value is lower, test efficiency is low, can't study the high water head abrasion test, and for each abrasion experimental provision, its control parameter is comparatively single, therefore is necessary further to improve and research and develop better test design and device.
Summary of the invention: a kind of novel abrader of the present invention, can simulate abrasion and the erosion behavior of the water turbine overflowing component of multiple head containing Sha Shui, the applied environment of simulation water turbine overflowing component material, to containing Sha Shui material surface abrasion behavior and process are studied, can be analyzed and researched to the material anti-erosion performance simultaneously.Technical scheme of the present invention is: a kind of abrader, and the water inlet of high-pressure frequency-conversion pump links to each other with water tank by water inlet pipe, and water delivering orifice is connected by the water inlet end of high-pressure water pipe with the abrasion spray gun that places top, abrasion test cabin; The abrasion test sample partly is placed on the example platform that is positioned at middle and lower part, abrasion test cabin; Tail tank is accessed by draft tube in the bottom in abrasion test cabin; Sandbox is by being connected for the spray gun seat of sand tube with the abrasion spray gun; Switch board is connected with sandbox with the high-pressure frequency-conversion pump respectively with sand drift amount control line by the discharge control line.
The gun body of the abrasion spray gun that the present invention includes is pressed into (operating) water nozzle in the spray gun seat, and receives on the spray gun seat by screw thread; Water inlet end is pressed into sealing ring in the gun body, and is threaded connection on the gun body; Jet pipe is pressed into the spray gun seat with the mortar nozzle, and be threaded connection on the spray gun seat, enter the current of water inlet end through the compression of gun body and (operating) water nozzle, in the spray gun seat, form high-pressure spray, thereby in the spray gun seat, form vacuum, its self-priming effect sucks the spray gun seat with sand, and mixes therein the formation mortar, and mortar forms high pressure mortar jet through jet pipe ejection abrasion spray gun through the compression of mortar nozzle.Switch board of the present invention is connected with sandbox with the high-pressure frequency-conversion pump respectively with sand drift amount control line by the discharge control line, control respectively discharge and sand drift amount, and then jet velocity and the silt content of the mortar that ejects of the jet pipe of control abrasion spray gun, thereby realize applied environment simulation to the water turbine overflowing component material.
The cushion cap frame of the example platform that the present invention includes is welded on the abrasion test cabin, the cushion cap axle passes therethrough, the abrasion sample is placed on the sample holder that is fixed on the sample cushion cap, buckle the sample gland, the sample cushion cap is connected with positioning disk by the cushion cap axle, by setting the angle of attack in the pilot hole that the setscrew nut on the positioning disk is screwed into the cushion cap frame, thereby realized the regulation and control to the mortar angle of attack, angle of attack modification scope be 0 ~ 90 ° every 5 ° of distributions.
The invention has the advantages that, the mixed process of the grains of sand and water is finished in the abrasion spray gun in the abrasion test process, the vacuum self-priming that the supply of the grains of sand is formed in the abrasion spray gun by high-velocity flow is used for realizing, pumping system not with contain Sha Shui and contact, when avoiding the mutual destruction of the grains of sand and pumping system, again so that in the process of the test grains of sand and Hydropower Unit flow passage components interaction situation more identical, testing machine can be simultaneously to fast to silt carrying flow, silt content, contain husky kind, containing Sha Shui controls and regulates important parameters such as the material angles of attack, the actual operating mode environment of simulation hydro-electric power generating equipment flow passage components that can be more authentic and valid carries out systematic analysis and research to its abrasion behavior.
Description of drawings
Fig. 1 is abrader system schematic of the present invention
Fig. 2 is abrasion spray gun synoptic diagram
Fig. 3 is sample platform and governor motion synoptic diagram
Fig. 4 is that cushion cap is confined a pore size distribution synoptic diagram
Embodiment
A kind of abrader as shown in Figure 1, the water inlet of high-pressure frequency-conversion pump 1 links to each other with water tank 3 by water inlet pipe 2, and water delivering orifice is connected by the water inlet end 16 of high-pressure water pipe 4 with the abrasion spray gun 6 that places 5 tops, abrasion test cabin; Abrasion test sample part 7 is placed on the example platform 8 that is positioned at 5 middle and lower parts, abrasion test cabin; The bottom in abrasion test cabin 5 is by draft tube 9 access tail tanks 10; Sandbox 11 is by being connected for the spray gun seat 20 of sand tube 12 with abrasion spray gun 6; Switch board 13 is connected with sandbox 11 with high-pressure frequency-conversion pump 1 respectively with sand drift amount control line 15 by discharge control line 14, control respectively discharge and sand drift amount, and then jet velocity and the silt content of the mortar that ejects of the jet pipe 22 of control abrasion spray gun 6, thereby realize applied environment simulation to the water turbine overflowing component material.
As shown in Figure 2, the gun body 18 of abrasion spray gun 6 is pressed into (operating) water nozzle 19 in the spray gun seat 20, and is connected with spray gun seat 20; Water inlet end 16 is pressed into sealing ring 17 in the gun body 18, and is connected with gun body 18; Jet pipe 22 is pressed into spray gun seat 20 with mortar nozzle 21, and is connected with spray gun seat 20.Enter the current of water inlet end 16 through the compression of gun body 18 and (operating) water nozzle 19, at spray gun seat 20 interior formation high-pressure sprays, thereby in spray gun seat 20 interior formation vacuum, its self-priming effect sucks spray gun seat 20 with sand, and mixing therein the formation mortar, mortar forms high pressure mortar jets through jet pipe 22 ejection abrasion spray guns 6 through 21 compressions of mortar nozzle.
As shown in Figure 3 and Figure 4, the cushion cap frame 25 of example platform 8 is welded on the abrasion test cabin 5, and cushion cap axle 26 passes therethrough; Abrasion sample 29 is fixed on the sample holder 28 that is positioned on the sample cushion cap 27 by sample gland 30; Sample cushion cap 27 is connected with positioning disk 24 by cushion cap axle 26, by setting the angle of attack in the pilot hole that the setscrew nut 23 on the positioning disk 24 is screwed into cushion cap frame 25, thereby realized the regulation and control to the mortar angle of attack, angle of attack modification scope be 0 ~ 90 ° every 5 ° of distributions.
Claims (3)
1. abrader, it is characterized in that: the water inlet of high-pressure frequency-conversion pump (1) links to each other with water tank (3) by water inlet pipe (2), and water delivering orifice is connected by the water inlet end (16) of high-pressure water pipe (4) with the abrasion spray gun (6) that places top, abrasion test cabin (5); Abrasion test sample part (7) is placed on the example platform (8) that is positioned at middle and lower part, abrasion test cabin (5); The bottom in abrasion test cabin (5) is by draft tube (9) access tail tank (10); Sandbox (11) is by being connected for the spray gun seat (20) of sand tube (12) with abrasion spray gun (6); Switch board (13) is connected with sandbox (11) with high-pressure frequency-conversion pump (1) respectively with sand drift amount control line (15) by discharge control line (14).
2. a kind of abrader according to claim 1 is characterized in that: the gun body (18) of abrasion spray gun (6) is pressed into (operating) water nozzle (19) in the spray gun seat (20), and is connected with spray gun seat (20); Water inlet end (16) is pressed into sealing ring (17) in the gun body (18), and is connected with gun body (18); Jet pipe (22) is pressed into spray gun seat (20) with mortar nozzle (21), and is connected with spray gun seat (20).
3. a kind of abrader according to claim 1, it is characterized in that: the cushion cap frame (25) of example platform (8) is welded on the abrasion test cabin (5), and cushion cap axle (26) passes therethrough; Abrasion sample (29) is fixed on the sample holder (28) that is positioned on the sample cushion cap (27) by sample gland (30); Sample cushion cap (27) is connected with positioning disk (24) by cushion cap axle (26), by setting the angle of attack in the pilot hole that the setscrew nut (23) on the positioning disk (24) is screwed into cushion cap frame (25), angle of attack modification scope be 0 ~ 90 ° every 5 ° of distributions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103451899A CN102854078A (en) | 2012-09-18 | 2012-09-18 | Abrasion testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103451899A CN102854078A (en) | 2012-09-18 | 2012-09-18 | Abrasion testing machine |
Publications (1)
| Publication Number | Publication Date |
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| CN102854078A true CN102854078A (en) | 2013-01-02 |
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| CN2012103451899A Pending CN102854078A (en) | 2012-09-18 | 2012-09-18 | Abrasion testing machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149144A (en) * | 2013-02-28 | 2013-06-12 | 中国石油天然气股份有限公司 | Oil well pipe column high-temperature corrosion erosion performance test device and test method |
| CN104777052A (en) * | 2015-04-03 | 2015-07-15 | 天津市精谱科技有限公司 | Mechanical wear testing device |
| CN104777053A (en) * | 2015-04-22 | 2015-07-15 | 徐州天诺矿山设备有限公司 | Discrete element impact abrasion detection device and discrete element impact abrasion detection method |
| CN116757115A (en) * | 2023-06-14 | 2023-09-15 | 西安交通大学 | Low-resistance pneumatic shape design device and method based on fluid abrasion and application |
Citations (8)
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|---|---|---|---|---|
| US3713699A (en) * | 1971-08-26 | 1973-01-30 | Hydronautics | System for eroding solids with a cavitating fluid jet |
| US4058004A (en) * | 1976-04-16 | 1977-11-15 | Hammitt Frederick G | Apparatus for measuring erosion produced by cavitation |
| JP2002340764A (en) * | 2001-05-15 | 2002-11-27 | Ishikawajima Harima Heavy Ind Co Ltd | Abrasion tester |
| CN1900685A (en) * | 2006-07-27 | 2007-01-24 | 四川大学 | Anti-impact wear resistance test device for high speed silt-carrying water flow water conservancy engineering material |
| CN101140209A (en) * | 2007-10-08 | 2008-03-12 | 西安理工大学 | Jet stream type erosion abrasion test device |
| CN100498284C (en) * | 2007-01-22 | 2009-06-10 | 河海大学 | Abrasion generator |
| CN201266579Y (en) * | 2008-09-26 | 2009-07-01 | 浙江利尔德继电器有限公司 | Movable functional insulation sheet of electromagnetic relay |
| CN201716245U (en) * | 2010-06-13 | 2011-01-19 | 河海大学常州校区 | Test piece surface erosion wear testing device |
-
2012
- 2012-09-18 CN CN2012103451899A patent/CN102854078A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3713699A (en) * | 1971-08-26 | 1973-01-30 | Hydronautics | System for eroding solids with a cavitating fluid jet |
| US4058004A (en) * | 1976-04-16 | 1977-11-15 | Hammitt Frederick G | Apparatus for measuring erosion produced by cavitation |
| JP2002340764A (en) * | 2001-05-15 | 2002-11-27 | Ishikawajima Harima Heavy Ind Co Ltd | Abrasion tester |
| CN1900685A (en) * | 2006-07-27 | 2007-01-24 | 四川大学 | Anti-impact wear resistance test device for high speed silt-carrying water flow water conservancy engineering material |
| CN100498284C (en) * | 2007-01-22 | 2009-06-10 | 河海大学 | Abrasion generator |
| CN101140209A (en) * | 2007-10-08 | 2008-03-12 | 西安理工大学 | Jet stream type erosion abrasion test device |
| CN201266579Y (en) * | 2008-09-26 | 2009-07-01 | 浙江利尔德继电器有限公司 | Movable functional insulation sheet of electromagnetic relay |
| CN201716245U (en) * | 2010-06-13 | 2011-01-19 | 河海大学常州校区 | Test piece surface erosion wear testing device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149144A (en) * | 2013-02-28 | 2013-06-12 | 中国石油天然气股份有限公司 | Oil well pipe column high-temperature corrosion erosion performance test device and test method |
| CN104777052A (en) * | 2015-04-03 | 2015-07-15 | 天津市精谱科技有限公司 | Mechanical wear testing device |
| CN104777052B (en) * | 2015-04-03 | 2017-07-25 | 天津市精谱科技有限公司 | Mechanical wear experimental rig |
| CN104777053A (en) * | 2015-04-22 | 2015-07-15 | 徐州天诺矿山设备有限公司 | Discrete element impact abrasion detection device and discrete element impact abrasion detection method |
| CN104777053B (en) * | 2015-04-22 | 2018-01-12 | 徐州市圣耐普特矿山设备制造有限公司 | A kind of discrete element pounding wear detection device and detection method |
| CN116757115A (en) * | 2023-06-14 | 2023-09-15 | 西安交通大学 | Low-resistance pneumatic shape design device and method based on fluid abrasion and application |
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Application publication date: 20130102 |