CN113218801A - Testing device and testing method for abrasion test of filling slurry conveying pipeline - Google Patents
Testing device and testing method for abrasion test of filling slurry conveying pipeline Download PDFInfo
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- CN113218801A CN113218801A CN202110595344.1A CN202110595344A CN113218801A CN 113218801 A CN113218801 A CN 113218801A CN 202110595344 A CN202110595344 A CN 202110595344A CN 113218801 A CN113218801 A CN 113218801A
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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
Abstract
The invention discloses a test device and a test method for abrasion test of a filling slurry conveying pipeline, wherein the test device comprises a stirring tank, a conveying assembly connected with the output end of the stirring tank, and a test pipeline assembly connected with the output end of the conveying assembly, wherein the output end of the test pipeline assembly is connected with the input end of the stirring tank; the test pipeline assembly comprises a plurality of horizontal pipelines, elbows, inclined pipelines and vertical pipelines which are connected with each other. Through the mode, the invention can realize the research on the abrasion rules of the filling slurries with different proportions at the horizontal pipeline, the inclined pipeline, the vertical pipeline, the elbow and the like, and can control the flow and the flow velocity of the filling slurries so as to simulate various test environments, and the test effect is better.
Description
Technical Field
The invention relates to the technical field of mine solid waste filling, in particular to a test device and a test method for testing abrasion of a filling slurry conveying pipeline.
Background
In mine filling systems, the filling pipe plays an important role as a dedicated channel for the filling slurry. The flow of the fill slurry through the pipe necessarily causes corrosion and friction to the pipe, resulting in wear or damage to the fill pipe. At present, a plurality of domestic mines using filling methods have the technical problem of serious wear of over-filling pipelines. Once the filling pipeline is worn through, the connection between the mine filling and mining procedures can be seriously influenced, and even the normal production of the mine can be influenced. The research on the abrasion of the pipeline has important significance for ensuring the safe and stable operation of the pipeline.
The device consists of a base box body, a supporting table top, a protective cover, a rotating iron disc, waterproof abrasive cloth, a waterproof abrasive cloth fixing device, a fixed rotating shaft, a motor, a pipeline material fixing support, a pipeline material, a water adding pipe and a counterweight material, can accurately test the abrasion loss of pipelines of different abrasion-resistant materials under the action of different filling materials, but has the problem that the simulated working condition is single and cannot reflect the actual condition of conveying of filling slurry in the pipelines, and is generally only suitable for selecting the abrasion-resistant materials of the filling pipelines.
The device comprises a kettle body, a sample rack, a sample, slurry, a sealing cover, a motor, a transmission belt, an inflation pipeline and a control system, can perform simulated wear tests on pipelines with different pipe diameters, wall thicknesses and materials, and can simultaneously realize simulation of different proportions, densities and flow rates of slurry. However, the test device is generally only suitable for the abrasion test research of vertical pipelines, and is not suitable for horizontal pipelines. In the actual production, what exist in a large number is horizontal conveying pipeline, and the elbow department of pipeline is changeed wearing and tearing, and this test device can't carry out the pipeline abrasion test under this operating mode.
The prior art also provides a device for testing abrasion of a paste filling horizontal pipeline, but the device is only suitable for testing and researching abrasion of the horizontal pipeline, but is not suitable for vertical pipelines and inclined pipelines.
Therefore, it is necessary to design a testing apparatus for testing abrasion of a filling slurry conveying pipeline and a testing method thereof, which have a simple structure and a wide range of test objects and can test different conveying pipelines.
Disclosure of Invention
In order to overcome the problems, the invention provides a test device and a test method for testing the abrasion of a filling slurry conveying pipeline.
In order to achieve the purpose, the invention adopts the technical scheme that:
a test device for abrasion test of a filling slurry conveying pipeline comprises a stirring tank, a conveying assembly connected with the output end of the stirring tank, and a test pipeline assembly connected with the output end of the conveying assembly, wherein the output end of the test pipeline assembly is connected with the input end of the stirring tank; the test pipeline assembly comprises a plurality of horizontal pipelines, elbows, inclined pipelines and vertical pipelines which are connected with each other.
Furthermore, a stirring mechanism is arranged in the stirring tank, rotates around the axis of the stirring tank and is driven by a variable frequency motor connected with the stirring tank, and the variable frequency motor is used for adjusting the rotating speed of the stirring mechanism.
Further, a feed inlet is formed in the top of the stirring tank, and a discharge outlet are formed in the bottom of the stirring tank; the discharge gate department is provided with the ooff valve, discharge gate department is provided with the blowoff valve.
Furthermore, the test pipeline assembly comprises a first vertical pipeline, a first elbow, a horizontal pipeline, a second elbow, a first inclined pipeline, a third elbow, a second inclined pipeline, a fourth elbow and a second vertical pipeline which are connected in sequence; the input end of the first vertical pipeline is connected with the conveying assembly pipeline, and the output end of the second vertical pipeline is connected with the feed inlet.
Further, the conveying assembly is a variable-frequency slurry pump, the first vertical pipeline is connected with a pipeline of the variable-frequency slurry pump, and an electromagnetic flowmeter is arranged on a connecting pipeline of the first vertical pipeline and the variable-frequency slurry pump.
Further, the first vertical pipe, the first elbow, the horizontal pipe, the second elbow, the first inclined pipe, the third elbow, the second inclined pipe, the fourth elbow and the second vertical pipe are detachably connected with each other through flanges.
Further, the first inclined pipeline is a straight pipe which is vertically inclined, so that the condition that a drill hole arranged on the vertical pipeline is inclined in actual construction is simulated; the second inclined pipeline is a straight pipe which is transversely obliquely arranged so as to simulate the condition that the horizontal pipeline is inclined in actual construction.
Further, a plurality of the bends have a plurality of bending angles.
A test method for a wear test of a filling slurry conveying pipeline is adopted, and the test device for the wear test of the filling slurry conveying pipeline comprises the following steps:
s1, determining filling materials and the proportion thereof according to the mine conveying working condition to be simulated;
s2, weighing the filling materials according to the proportion and pouring the weighed filling materials into a stirring tank;
s3, starting the variable frequency motor, setting the variable frequency motor to be in a high-speed mode, and uniformly mixing the filling materials by the stirring mechanism;
s4, setting the variable frequency motor to be in a low-speed mode, opening the switch valve and the variable frequency slurry pump, and enabling the filling slurry to flow out of the discharge hole;
s5, adjusting the pumping frequency of the variable-frequency slurry pump and recording;
s6, reading the pumping flow measured by the electromagnetic flowmeter and the total flow passing through the test pipeline assembly, and recording;
s7, enabling the filling slurry to flow into the stirring tank from the feed inlet after passing through the test pipeline assembly and flow out from the discharge outlet;
s8, closing the variable frequency motor, the variable frequency slurry pump and the switch valve;
s9, disassembling each pipeline of the test pipeline assembly, weighing, and calculating the wear amount and wear rate of each pipeline;
and S10, and circulating the steps from S4 to S10 until the number of the collected test data sets reaches a preset value.
Further, in step S2, the volume of the filling material poured into the agitation tank is 1/2 to 2/3 of the volume of the agitation tank.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the test device for the abrasion test of the filling slurry conveying pipeline, the frequency conversion slurry pump and the test pipeline assembly with different pipelines are arranged, so that the abrasion rules of filling slurries with different proportions at horizontal pipelines, inclined pipelines, vertical pipelines, elbows and the like can be researched, the flow and the flow speed of the filling slurries can be controlled, various test environments can be simulated, the test effect is better, the obtained abrasion test data are closer to the actual mine production, and the test device has more scientificity, reliability and persuasion.
2. According to the test device for the abrasion test of the filling slurry conveying pipeline, different filling materials can be mixed according to different proportions by arranging the stirring tank, and the stirring device is driven to rotate by the variable frequency motor without manual stirring; and inverter motor's setting can adopt higher rotational speed when filling ground paste is prepared, realizes the purpose of short time, high-efficient high quality preparation homogeneity filling ground paste, at the circulating pumping in-process, adopts lower rotational speed to disturb the ground paste to prevent its segregation and subside, when energy-conserving, avoid the inslot slurry to splash.
3. According to the test device for the abrasion test of the filling slurry conveying pipeline, the filling slurry flowing through the test pipeline assembly is injected into the stirring tank again, the filling slurry can be recycled, and the abrasion rule of the filling pipeline is researched under the condition of less test materials.
Drawings
FIG. 1 is a schematic structural view of example 1 of a test apparatus for wear testing of a filler slurry feed pipe according to the present invention;
FIG. 2 is a schematic structural view of example 2 of the test apparatus for abrasion testing of a filler slurry feed pipe according to the present invention;
the parts in the drawings are numbered as follows: 1. a stirring tank; 2. a stirring mechanism; 3. a discharge port; 4. an on-off valve; 5. a variable frequency slurry pump; 6. an electromagnetic flow meter; 7. a first vertical pipe; 8. a first elbow; 9. a horizontal pipe; 10. a second elbow; 11. a first inclined duct; 12. a third elbow; 13. a second inclined duct; 14. a fourth elbow; 15. a second vertical pipe; 16. an evacuation valve; 17. a flange; 18. a flow valve.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 1, a test device for abrasion test of a filling slurry conveying pipeline comprises a stirring tank 1, a conveying assembly connected with an output end of the stirring tank 1, and a test pipeline assembly connected with an output end of the conveying assembly, wherein the output end of the test pipeline assembly is connected with an input end of the stirring tank 1 so as to recycle the filling slurry, and the abrasion rule of the test pipeline assembly is researched under the condition of less test materials. The conveying assembly is preferably a variable-frequency slurry pump 5, and the research on the pipe abrasion of the filling slurry at different flow rates can be realized by controlling the pumping frequency of the variable-frequency slurry pump 5. The test pipeline assembly comprises a plurality of horizontal pipelines 9, elbows, inclined pipelines and vertical pipelines which are connected with each other, and can simulate various slurry conveying working conditions.
So set up, through frequency conversion sediment stuff pump 5 and the test pipeline subassembly that possesses different pipelines, can realize filling the research of the wearing and tearing law of ground paste in horizontal duct 9, inclined pipeline, vertical pipeline and elbow etc. department to different ratios. The flow and the flow speed of the filling slurry can be controlled so as to simulate various test environments, and the test effect is better. The obtained abrasion test data is closer to the actual mine production and has more scientificity, credibility and persuasion.
In some embodiments, the stirring tank 1 is internally provided with a stirring mechanism 2, and the stirring mechanism 2 rotates around the axis of the stirring tank 1 and is driven by a variable frequency motor connected with the stirring tank. The filling material injected into the stirring tank 1 can be automatically and uniformly mixed without manual stirring, and the burden of a tester is reduced. The variable frequency motor is used for adjusting the rotating speed of the stirring mechanism 2 and has a high-speed mode and a low-speed mode. So set up, inverter motor can adopt higher rotational speed when filling ground paste preparation, realizes the purpose of short time, high-efficient high quality preparation homogeneity filling ground paste. In the process of circularly pumping the filling slurry, the variable frequency motor adopts a lower rotating speed to disturb the slurry so as to prevent the slurry from being segregated and sedimentated, and can also avoid the splashing of the slurry in the stirring tank 1 while saving energy.
Particularly, the top of the stirring tank 1 is provided with a feeding hole, and the bottom of the stirring tank 1 is provided with a discharging hole 3 and a discharging hole. The discharge port 3 is provided with a switch valve 4 which can control the transportation of the slurry and has a sealing function to prevent the leakage of the slurry. The discharge outlet is provided with an exhaust valve 16, and after the test is finished, all residual slurry in the stirring tank 1 can be discharged, so that the stirring tank 1 is convenient to clean.
As shown in fig. 1, in some embodiments, the test tube assembly includes a first vertical tube 7, a first elbow 8, a horizontal tube 9, a second elbow 10, a first angled tube 11, a third elbow 12, a second angled tube 13, a fourth elbow 14, and a second vertical tube 15 connected in series.
Specifically, the first vertical pipeline 7 is connected with the pipeline of the variable frequency slurry pump 5, and an electromagnetic flow meter 6 is arranged on the connecting pipeline of the first vertical pipeline and the variable frequency slurry pump. The output end of the second vertical pipe 15 is connected with the feed inlet. Therefore, the cyclic utilization of the filling slurry is realized, and the abrasion rule of the test pipeline assembly is researched under the condition of less test materials.
The electromagnetic flow meter 6 can meter the pumping flow of the variable frequency slurry pump 5 and count the total flow through the test piping assembly. In addition, the pumping frequency of the variable-frequency slurry pump 5 can be adjusted according to the pumping flow displayed by the electromagnetic flowmeter 6, and the abrasion condition of the test pipeline assembly of the slurry passing through the test pipeline assembly under different flow rates and the abrasion condition of the test pipeline assembly under different total flow rates can be tested and analyzed.
As shown in fig. 1, in some embodiments, the first vertical pipe 7, the first elbow 8, the horizontal pipe 9, the second elbow 10, the first angled pipe 11, the third elbow 12, the second angled pipe 13, the fourth elbow 14, and the second vertical pipe 15 are removably connected to one another via a flange 17. And the first vertical pipeline 7 and the electromagnetic flowmeter 6 are connected through a connecting pipeline, and the second vertical pipeline 15 and the feed inlet are connected through flanges 17. The flange 17 is adopted for connection, so that each pipeline can be conveniently disassembled and replaced, the abrasion loss and the abrasion rate of each pipeline can be calculated, and the abrasion condition of the pipelines made of different materials and under the pipe diameter condition can be conveniently researched. And, can carry the operating mode according to the mine of difference, design different test pipeline subassemblies for the device design is nimble, and the wearing and tearing experimental data that obtain is close to the mine production reality more, has more scientifically and credibility.
In particular, during actual construction, when the vertical pipe is drilled, the drilled hole actually has a certain deviation rate due to operators, mechanical equipment and the like. The first inclined pipeline 11 is a straight pipe which is vertically inclined, and the condition that a drilled hole formed in the vertical pipeline is inclined in actual construction can be simulated. When the pipes are arranged in the actual horizontal roadway, due to the influences of natural drainage of the roadway, arrangement of other pipelines in the roadway or an inclined roadway, a certain inclination angle exists in the arrangement of the horizontal pipelines 9 actually. The second inclined pipeline 13 is a straight pipe which is transversely arranged in an inclined mode so as to simulate the condition that the horizontal pipeline 9 is inclined in actual construction. So set up, simulate the special condition that different pipelines exist for the wearing and tearing condition of research drilling has more realistic meaning.
The plurality of elbows have various bending angles, and the elbows with angles of 45 degrees, 90 degrees, 135 degrees or other angles can be simulated, so that the abrasion rule of the filling slurry under the working conditions of different flow rates, elbow angles and the like can be researched.
A test method for a wear test of a filling slurry conveying pipeline adopts a test device for the wear test of the filling slurry conveying pipeline, and comprises the following steps:
s1, determining filling materials and the proportion thereof according to the mine conveying working condition to be simulated;
s2, weighing the filling materials according to the proportion and pouring the weighed filling materials into the stirring tank 1;
s3, starting the variable frequency motor, setting the variable frequency motor to be in a high-speed mode, and uniformly mixing the filling materials by the stirring mechanism 2;
s4, setting the variable frequency motor to be in a low-speed mode, opening the switch valve 4 and the variable frequency slurry pump 5, and enabling filling slurry to flow out of the discharge port 3;
s5, adjusting the pumping frequency of the variable-frequency slurry pump 5 and recording;
s6, reading the pumping flow measured by the electromagnetic flowmeter 6 and the total flow passing through the test pipeline assembly, and recording;
s7, enabling the filling slurry to flow into the stirring tank 1 from the feed inlet after passing through the test pipeline assembly, and flowing out from the discharge outlet 3;
s8, closing the variable frequency motor, the variable frequency slurry pump 5 and the switch valve 4;
s9, disassembling each pipeline of the test pipeline assembly, weighing, and calculating the wear amount and wear rate of each pipeline;
and S10, and circulating the steps from S4 to S10 until the number of the collected test data sets reaches a preset value.
Specifically, in step S2, the volume of the filling material poured into the agitation tank 1 is 1/2 to 2/3 of the volume of the agitation tank 1.
In this way, this test device extensively is applicable to the wear test research of full tailings, hierarchical tailings, coarse aggregate (rubble, next door aggregate, ardealite etc.) or other fluid pipeline transport to can carry out the wearing and tearing law research of different ratio filling ground paste in positions such as horizontal pipeline 9, inclined pipeline, vertical pipeline and elbow, the function is comparatively complete, and the operation is comparatively simple and convenient. The weighed filling materials are uniformly mixed through the stirring tank 1, and manual stirring is not needed for preparation. The pipelines at all positions are connected through the flanges 17, so that the disassembly and the assembly are convenient, and the research can be carried out on the pipelines with different materials, diameters, wall thicknesses and the like.
Example 2
As shown in fig. 2, in the present embodiment, the bottom of the agitation tank 1 is provided with a plurality of discharge ports 3. The conveying assembly comprises a plurality of variable-frequency slurry pumps 5 which are respectively connected with the discharge holes 3 of the stirring tank 1. And a switching valve 4 and a flow valve 18 are arranged on a connecting pipeline of each variable-frequency slurry pump 5 and the stirring tank 1.
In this embodiment, the test pipeline assembly includes the experimental pipeline of multiunit that is connected with a plurality of frequency conversion sediment stuff pumps 5 respectively, and every experimental pipeline of group all includes the pipeline of a plurality of types.
So set up, this embodiment can be carried the thick liquids in the stirred tank 1 simultaneously and test for the experimental pipeline subassembly of multiunit. And the flow valve 18 is used for controlling the conveying flow of each pipeline, and the variable-frequency slurry pump 5 is used for adjusting the pumping frequency of each pipeline. Therefore, the test can be performed by simulating various test environments at the same time.
Except for the above structure, the rest of the structure of the present embodiment is the same as embodiment 1.
The above description is only for the purpose of illustrating the technical solutions of the present invention and is not intended to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent processes performed by using the contents of the specification and the drawings of the invention, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The test device for the abrasion test of the filling slurry conveying pipeline is characterized by comprising a stirring tank (1), a conveying assembly connected with the output end of the stirring tank (1) and a test pipeline assembly connected with the output end of the conveying assembly, wherein the output end of the test pipeline assembly is connected with the input end of the stirring tank (1); the test pipeline assembly comprises a plurality of horizontal pipelines (9), elbows, inclined pipelines and vertical pipelines which are connected with each other.
2. The testing device for the abrasion test of the filling slurry conveying pipeline according to claim 1, wherein a stirring mechanism (2) is arranged inside the stirring tank (1), the stirring mechanism (2) rotates around the axis of the stirring tank (1) and is driven by a variable frequency motor connected with the stirring mechanism, and the variable frequency motor is used for adjusting the rotating speed of the stirring mechanism (2).
3. The test device for the abrasion test of the filling slurry conveying pipeline according to claim 2, wherein a feed port is formed in the top of the stirring tank (1), and a discharge port (3) and a discharge port are formed in the bottom of the stirring tank (1); the discharge port (3) is provided with a switch valve (4), and the discharge port is provided with an emptying valve (16).
4. The testing apparatus for wear testing of filler slurry conveying pipes according to claim 3, wherein the test pipe assembly comprises a first vertical pipe (7), a first elbow (8), a horizontal pipe (9), a second elbow (10), a first inclined pipe (11), a third elbow (12), a second inclined pipe (13), a fourth elbow (14), and a second vertical pipe (15) which are connected in sequence; the input end of the first vertical pipeline (7) is connected with the conveying assembly through a pipeline, and the output end of the second vertical pipeline (15) is connected with the feeding hole.
5. The testing device for the wear test of the filling slurry conveying pipeline is characterized in that the conveying assembly is a variable-frequency slurry pump (5), the first vertical pipeline (7) is connected with the variable-frequency slurry pump (5) in a pipeline mode, and an electromagnetic flow meter (6) is arranged on the connecting pipeline of the first vertical pipeline and the second vertical pipeline.
6. The testing apparatus for wear testing of filler slurry conveying pipes according to claim 4, wherein the first vertical pipe (7), the first elbow (8), the horizontal pipe (9), the second elbow (10), the first inclined pipe (11), the third elbow (12), the second inclined pipe (13), the fourth elbow (14), and the second vertical pipe (15) are detachably connected to each other by a flange (17).
7. The testing device for the wear test of the filling slurry conveying pipeline, according to the claim 6, is characterized in that the first inclined pipeline (11) is a straight pipe which is vertically inclined so as to simulate the condition that a drill hole arranged on the vertical pipeline is inclined during actual construction; the second inclined pipeline (13) is a straight pipe which is transversely obliquely arranged so as to simulate the condition that the horizontal pipeline (9) is inclined in actual construction.
8. The apparatus of claim 4, wherein a plurality of said bends have a plurality of bend angles.
9. A test method for a wear test of a filler slurry feed pipe using the test apparatus for a wear test of a filler slurry feed pipe according to any one of claims 1 to 8, characterized by comprising the steps of:
s1, determining filling materials and the proportion thereof according to the mine conveying working condition to be simulated;
s2, weighing the filling materials according to the proportion and pouring the weighed filling materials into the stirring tank (1);
s3, starting the variable frequency motor, setting the variable frequency motor to be in a high-speed mode, and uniformly mixing the filling materials by the stirring mechanism (2);
s4, setting the variable frequency motor to be in a low-speed mode, opening the switch valve (4) and the variable frequency slurry pump (5), and enabling filling slurry to flow out of the discharge hole (3);
s5, adjusting the pumping frequency of the variable-frequency slurry pump (5), and recording;
s6, reading the pumping flow measured by the electromagnetic flowmeter (6) and the total flow passing through the test pipeline assembly, and recording;
s7, enabling the filling slurry to flow into the stirring tank (1) from the feed inlet after passing through the test pipeline assembly, and enabling the filling slurry to flow out from the discharge outlet (3);
s8, turning off the variable frequency motor, the variable frequency slurry pump (5) and the switch valve (4);
s9, disassembling each pipeline of the test pipeline assembly, weighing, and calculating the wear amount and wear rate of each pipeline;
and S10, and circulating the steps from S4 to S10 until the number of the collected test data sets reaches a preset value.
10. The test method for abrasion test of filler slurry feed pipe according to claim 9, wherein in step S2, the volume of the filler material poured into the agitation tank (1) is 1/2 to 2/3 of the volume of the agitation tank (1).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114427950A (en) * | 2021-12-17 | 2022-05-03 | 中煤科工集团武汉设计研究院有限公司 | Slurry pipeline blockage test device and method for performing slurry pipeline blockage test by using same |
| CN114659770A (en) * | 2022-03-18 | 2022-06-24 | 淄博市产品质量检验研究院 | Abrasion detection device and method for solid-liquid two-phase fluid conveying pipeline |
| CN117233034A (en) * | 2023-11-16 | 2023-12-15 | 道生天合材料科技(上海)股份有限公司 | Method and device for testing adhesive injection abrasion |
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- 2021-05-28 CN CN202110595344.1A patent/CN113218801A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427950A (en) * | 2021-12-17 | 2022-05-03 | 中煤科工集团武汉设计研究院有限公司 | Slurry pipeline blockage test device and method for performing slurry pipeline blockage test by using same |
| CN114659770A (en) * | 2022-03-18 | 2022-06-24 | 淄博市产品质量检验研究院 | Abrasion detection device and method for solid-liquid two-phase fluid conveying pipeline |
| CN117233034A (en) * | 2023-11-16 | 2023-12-15 | 道生天合材料科技(上海)股份有限公司 | Method and device for testing adhesive injection abrasion |
| CN117233034B (en) * | 2023-11-16 | 2024-02-09 | 道生天合材料科技(上海)股份有限公司 | Method and device for testing adhesive injection abrasion |
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