CN211347796U - Test bed for analyzing erosion wear of surface sample - Google Patents
Test bed for analyzing erosion wear of surface sample Download PDFInfo
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- CN211347796U CN211347796U CN201921899149.2U CN201921899149U CN211347796U CN 211347796 U CN211347796 U CN 211347796U CN 201921899149 U CN201921899149 U CN 201921899149U CN 211347796 U CN211347796 U CN 211347796U
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Abstract
An analytical surface sample erosive wear test stand is characterized by comprising a sand adding device, a sand adding device and a sand adding device, wherein the sand adding device is positioned at the highest position of the upstream of the whole test stand and is used for providing solid-phase particles for a system; the device comprises a test device which is a core device of the whole test bed and is used for simulating and jetting a test sample by the grinding material supplied by a sand adding device under the high-pressure thrust of a pressurized power device air source, and collecting the abrasion condition for later research; the system comprises a pipeline system, supplies high-pressure airflow for the system, and is a power source of the system, and the pipeline system is connected with a sand adding device and a testing device to realize the operation of the system. The utility model discloses the test bench design is "filter sand-storage sand-play sand" integral structure, and the impact angle that granule and sample collision produced when can quantitative analysis goes out abrasive material impact velocity is constant adjusts sand grain speed and angle and obtains multiple data, obtains the condition of the concrete erosion and wear that the sample received, prepares for later stage research. This test bench can avoid the spray tube to block up.
Description
Technical Field
The utility model belongs to erosion and wear research test field, concretely relates to be used for analysis surface sample erosion and wear test platform can be applied to the research field of dredging conveying equipment destruction.
Background
Erosion and abrasion are the main reasons for damaging the dredging and conveying equipment, and the abrasion causes the performance and the service life of a dredging and conveying system to be reduced, thereby seriously influencing the construction capacity and the economic benefit of the dredging ship. Both research and practice show that: large particles of sharp grit are more likely to cause a rapid build up of localized erosive wear.
The equipment such as a dredge pump component is used as core equipment in the dredging process, the equipment is easy to be rapidly and seriously damaged and scrapped under the soil quality, and the service life of the equipment is only about 1/10 of silt soil quality. The frequent maintenance and replacement of the equipment seriously wastes manpower and material resources, and causes huge economic loss. Along with the development of the dredging industry towards coastal dredging and island filling, and the response of a dredging group to the development strategy of 'one-by-one-way' in China, more ocean projects and international projects are accepted, and the quality of coarse sand and soil in the ocean is more frequent.
The existing simulation platform has a certain problem in predicting the erosion and wear phenomenon in the dredge pump, and can only obtain qualitative conclusion in some areas with serious wear, but has more problems in predicting specific wear amount.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the not enough of prior art, disclose an analysis surface sample erosion wear test platform. The experimental device can adjust the impact speed and control the impact angle, and provides conditions for researching the relationship between the abrasion loss and the impact angle and the impact speed in the later period and correcting two-phase flow simulation.
In order to achieve the above purpose, the technical scheme of the utility model is that:
an analytical surface sample erosive wear test stand is characterized in that,
the sand adding device is positioned at the highest position of the upstream of the whole test bed and is used for providing solid-phase particles for the system;
the device comprises a test device which is a core device of the whole test bed and is used for simulating and jetting a test sample by the grinding material supplied by a sand adding device under the high-pressure thrust of a pressurized power device air source, and collecting the abrasion condition for later research;
the system comprises a pipeline system, supplies high-pressure airflow for the system, and is a power source of the system, and the pipeline system is connected with a sand adding device and a testing device to realize the operation of the system.
The sand adding device comprises a sand filtering device 1, a supporting plate 3 and a sand box 5, wherein the supporting plate 3 is horizontally arranged in the sand box 5, the sand filtering device 1 is arranged in the sand box 5 and is installed on the supporting plate 3, and sand output by the sand filtering device 1 is connected to an external pipeline system through an outlet at the bottom of the sand box 5.
The test device comprises an operation box 13, a spray gun 16, a support system 19 and a shakeout box 20; a sand dropping box (20) is arranged at the bottom of the operation box (13) and a bracket system (19) is fixed; the operation box (13) is internally provided with a spray gun (16) through a bracket system (19), the spray gun (16) structurally comprises a spray head (161), an air inlet (162) and a sand inlet (163), the sand inlet at the side is connected with a sand adding device through a pipeline system to obtain solid-phase grinding materials, the air inlet at the top is connected with a high-pressure airflow power device through the pipeline system to obtain air with constant static pressure, and the speed of the sprayed grinding materials is ensured to be constant. The test specimen is held by the mounting system 19 in an orientation directed at the spray head of the spray gun 16. Specifically, the test sample can be designed into a square metal test block. Further preferably, one side of the operation box is provided with a side opening door (22), and the side opening door is provided with a second observation window (21).
The pipeline system comprises a high-pressure airflow power device which is used for supplying high-pressure airflow and is a system power source. The high-pressure airflow power device comprises a second air compressor 12, the second air compressor gives a static pressure value of initial airflow, abrasive materials are driven by the airflow, the abrasive materials impact the surface of a sample at a constant speed, and the impact speed is given in the mode, so that the influence of the impact speed on abrasion can be better researched.
The utility model discloses the test bench design is "filter sand-storage sand-play sand" integral structure, and the impact angle that granule and sample collision produced when can quantitative analysis goes out abrasive material impact velocity is constant adjusts sand grain speed and angle and obtains multiple data, obtains the condition of the concrete erosion and wear that the sample received, prepares for later stage research. This test bench can avoid the spray tube to block up.
Drawings
FIG. 1 is the structure and position of the front section protection device of the spray head and the structural characteristics between the front section protection device and the spray head of the spray gun in the preferred embodiment 2;
FIG. 2 is a schematic view of the overall structure of the test stand of the preferred embodiment 3;
numerical notation
The sand filtering device comprises a sand filtering device 1, a sand outlet gate 2, a supporting plate 3, a first observation window 4, a sand box 5, a ball valve 8 and a first pressure sensor 9;
the device comprises an operation box 13, a spray gun 16, a bracket system 19, a shakeout box 20, a second observation window 21 and a side opening door 22;
a first air compressor 6 and a first pressure regulating valve 7; a second pressure sensor 10, a second pressure regulating valve 11, a second air compressor 12; a fan 14 and a dust collection bag 15;
the structure of the spray gun 16 is as follows: spray head 161, air inlet 162, sand inlet 163, protector 164.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Basic example 1
An analytical surface sample erosive wear test stand is characterized in that,
the sand adding device is positioned at the highest position of the upstream of the whole test bed and is used for providing solid-phase particles for the system;
the device comprises a test device which is a core device of the whole test bed and is used for simulating and jetting a test sample by using the grinding materials supplied by a sand adding device under the high-pressure thrust of a pressurized power device air source, and collecting the abrasion condition for later-stage research.
The system comprises a pipeline system, supplies high-pressure airflow for the system, and is a power source of the system, and the pipeline system is connected with a sand adding device and a testing device to realize the operation of the system.
The sand adding device comprises a sand filtering device 1, a supporting plate 3 and a sand box 5, wherein the supporting plate 3 is horizontally arranged in the sand box 5, the sand filtering device 1 is arranged in the sand box 5 and is installed on the supporting plate 3, and sand output by the sand filtering device 1 is connected to an external pipeline system through an outlet at the bottom of the sand box 5.
The test device comprises an operation box 13, a spray gun 16, a support system 19 and a shakeout box 20; a sand dropping box (20) is arranged at the bottom of the operation box (13) and a bracket system (19) is fixed; the spray gun 16 is installed in the operation box (13) through a support system 19, the spray gun 16 structurally comprises a spray head, an air inlet and a sand inlet, the sand inlet on the side is connected with a sand adding device through a pipeline system to obtain solid-phase grinding materials, and the air inlet on the top is connected with a high-pressure airflow power device through the pipeline system to obtain air with constant static pressure so as to ensure that the speed of the sprayed grinding materials is constant. The test specimen is held by the mounting system 19 in an orientation directed at the spray head of the spray gun 16. Specifically, the test sample can be designed into a square metal test block. Further preferably, one side of the operation box is provided with a side opening door (22), and the side opening door is provided with a second observation window (21).
The pipeline system comprises a high-pressure airflow power device which is used for supplying high-pressure airflow and is a system power source. The high-pressure airflow power device comprises a second air compressor 12, the second air compressor gives a static pressure value of initial airflow, abrasive materials are driven by the airflow, the abrasive materials impact the surface of a sample at a constant speed, and the impact speed is given in the mode, so that the influence of the impact speed on abrasion can be better researched.
Best mode for carrying out the invention
The technical scheme is further optimized and perfected on the basic embodiment 1.
As shown in fig. 1, the spray gun 16 also includes a protector. At the lower end of the lance 16 is mounted a protector 164 which is of an elongated design to restrict the path of the ejected high velocity sand particles. The inlet of the inner cavity of the protector is aligned with the outlet of the spray head and has a certain distance, so that the grinding materials can stably flow out of the protection device without blockage. Therefore, the damage caused by rebounding of the high-speed grinding material to impact the spray head can be effectively prevented, the cost can be effectively saved, and the high-speed grinding material can stably and safely run for a long time.
Best mode for carrying out the invention example 3
The technical scheme is further optimized and perfected on the basic embodiment 1.
As shown in fig. 2, the high pressure pneumatic power device further comprises a second pressure sensor 10, a second pressure regulating valve 11, wherein the second pressure regulating valve 11 is used for regulating the air pressure to control the jet speed of the abrasive, and the second pressure sensor 10 is used for monitoring the air pressure of the pipeline system.
The pipeline system also comprises a blockage removing device, and the blockage removing device comprises a first air compressor 6 and a first pressure regulating valve 7; the first air compressor machine exhaust can prevent that too much abrasive material from blockking up the pipeline.
The pipeline system further comprises an environment-friendly device, the environment-friendly device is installed on the upper side of the operation box 13 and comprises a fan 14 and a dust collection bag 15, the fan 14 enables the branch to form negative pressure, and dust floating to the top of the operation box 13 is absorbed into the dust collection bag 15. The dust in the operation box 13 is prevented from being too large during observation, so that the operation box is inconvenient to observe, and meanwhile, some floating abrasive can be collected.
The pipelines for conveying the air sources and the pipeline for collecting the floating grinding materials can be opened simultaneously, and one air source gives initial static pressure to provide initial speed for the grinding materials; the other gas source provides gas to ensure that the grinding materials continuously and stably flow out, so that the phenomenon of pipeline blockage is avoided; the last branch forms negative pressure, and dust floating to the top of the operation box 13 is absorbed into the dust collection bag 15.
When the sand is not smooth, the pipeline is dredged by opening the first air compressor 6 and the first pressure regulating valve 7.
One side of a sand outlet of the sand box 5 is connected with a pipeline of a spray gun 16 in an operation box 13, a ball valve 8 and a first pressure sensor 9 are arranged in the middle section of the pipeline, when the first pressure sensor 9 is abnormally changed, the pipeline is blocked, and at the moment, a first air compressor 6 and a first pressure regulating valve 7 are opened to dredge the pipeline; one side of the pipeline of the spray gun 16 is connected with a second air compressor 12, the flow rate of air flow entering the spray gun is controlled through a second pressure regulating valve 11, and whether the front end of the spray head is blocked or not is observed through the change of a second pressure sensor 10; the upper side of the operation box 13 is connected with a fan 14 and a dust collection bag 15, so that the phenomenon that dust in the operation box 13 is too large and inconvenient to observe during observation is avoided, and meanwhile, some floating abrasive materials can be collected; a sample is placed below the lance tube outlet and is held in place by a holder system 19.
The utility model discloses test bench, experiment easy operation, through this experiment, can adjust under the condition of given impact velocity, under the prerequisite drying condition, research dry particle strikes angle, the relation between speed and the metal sample wearing and tearing volume, through the quantitative analysis to these parameters, can obtain the wearing and tearing volume formula effectively and confirm the accuracy of coefficient, for in the pump in future, the calculation of coarse type granule wearing and tearing volume provides certain theoretical foundation, for the optimization of mud pump abrasion resistance after provide the reference, certain economic value has.
Claims (9)
1. An analytical surface sample erosive wear test stand is characterized in that,
the sand adding device is positioned at the highest position of the upstream of the whole test bed and is used for providing solid-phase particles for the system;
the device comprises a test device which is a core device of the whole test bed and is used for simulating and jetting a test sample by the grinding material supplied by a sand adding device under the high-pressure thrust of a pressurized power device air source, and collecting the abrasion condition for later research;
the system comprises a pipeline system, supplies high-pressure airflow for the system, and is a power source of the system, and the pipeline system is connected with a sand adding device and a testing device to realize the operation of the system.
2. The erosion wear test bench for analytical surface samples according to claim 1, characterized in that the sand adding device comprises a sand filter device (1), a support plate (3), a sand box (5), the support plate (3) is horizontally arranged in the sand box (5), the sand filter device (1) is arranged in the sand box (5) and is mounted on the support plate (3), and sand output by the sand filter device (1) is connected to an external pipeline system through an outlet at the bottom of the sand box (5).
3. The analytical surface sample erosive wear test bench according to claim 1, characterized in that the test apparatus comprises a handling box (13), a lance (16), a rack system (19), a shakeout box 20; a sand dropping box (20) is arranged at the bottom of the operation box (13) and a bracket system (19) is fixed; a spray gun (16) is arranged in the operation box (13) through a bracket system (19), the spray gun (16) structurally comprises a spray head (161), an air inlet (162) and a sand inlet (163), the sand inlet on the side is connected with a sand adding device through a pipeline system to obtain solid-phase grinding materials, the air inlet on the top is connected with a high-pressure airflow power device through the pipeline system to obtain gas with constant static pressure, and the speed of the sprayed grinding materials is ensured to be constant; the test specimen is clamped by a holder system (19) and is directed at the spray head of the spray gun (16) in an orientation.
4. The erosion wear test stand of analytical surface specimens according to claim 3, characterized in that a side door (22) with a second viewing window (21) is mounted on one side of the console box.
5. The analytical surface sample erosive wear test rig of claim 1, wherein the piping system includes a high-pressure air flow power device for supplying high-pressure air flow as a system power source; the high-pressure airflow power device comprises a second air compressor (12), wherein the second air compressor gives a static pressure value of initial airflow, abrasive is driven by the airflow, and the abrasive impacts the surface of a sample at a constant speed, and the impact speed is given in such a way.
6. The analytical surface sample erosive wear test stand of claim 3, wherein the lance (16) further comprises a protector; a protector (164) is arranged at the lower end of the spray gun (16), and the protector is designed into an elongated shape and is used for restricting the traveling path of the ejected high-speed sand grains; the inlet of the inner cavity of the protector is aligned with the outlet of the spray head and has a certain distance.
7. The analytical surface sample erosive wear test rig according to claim 1 or 5, characterized in that the high-pressure air flow power unit further comprises a second pressure sensor (10), a second pressure regulating valve (11), the second pressure regulating valve (11) being adapted to regulate the air pressure to control the abrasive jet velocity, the second pressure sensor (10) being adapted to monitor the air pressure of the pipe system.
8. The analytical surface sample erosive wear test rig according to claim 1 or 5, characterized in that the piping system further comprises a de-plugging device comprising a first air compressor (6), a first pressure regulating valve (7); the first air compressor machine exhaust can prevent that too much abrasive material from blockking up the pipeline.
9. The erosion wear test bench of analysis surface sample according to claim 1 or 5, characterized in that the piping system further comprises a environmental protection device, the environmental protection device is installed on the upper side of the operation box (13) and comprises a fan (14) and a dust collection bag (15), the fan (14) makes the branch form negative pressure, and dust floating to the top of the operation box (13) is absorbed into the dust collection bag (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921899149.2U CN211347796U (en) | 2019-11-06 | 2019-11-06 | Test bed for analyzing erosion wear of surface sample |
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| CN201921899149.2U CN211347796U (en) | 2019-11-06 | 2019-11-06 | Test bed for analyzing erosion wear of surface sample |
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| CN211347796U true CN211347796U (en) | 2020-08-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025562A (en) * | 2020-09-02 | 2020-12-04 | 中国航发北京航空材料研究院 | Sand blasting device and sand blasting method for controllable damage prefabrication of glass surface |
| CN117347217A (en) * | 2023-12-05 | 2024-01-05 | 深圳玉汝成口腔材料有限公司 | Denture durability detection method and denture detection device |
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2019
- 2019-11-06 CN CN201921899149.2U patent/CN211347796U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025562A (en) * | 2020-09-02 | 2020-12-04 | 中国航发北京航空材料研究院 | Sand blasting device and sand blasting method for controllable damage prefabrication of glass surface |
| CN117347217A (en) * | 2023-12-05 | 2024-01-05 | 深圳玉汝成口腔材料有限公司 | Denture durability detection method and denture detection device |
| CN117347217B (en) * | 2023-12-05 | 2024-02-13 | 深圳玉汝成口腔材料有限公司 | Denture durability detection method and denture detection device |
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