Testing device and testing system for abrasion loss of pipeline
By designing a pipeline wear test device and system including the first half pipe, the second half pipe, the sealing cover plate and the test pipe fitting, the problem of difficulty in accurately measuring and predicting the wear of pressure steel pipes in the hydropower station in the prior art is solved, and accurate prediction and evaluation of pipeline wear is achieved.
Patent Information
- Application Number
- CN202421714850.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-18
AI Technical Summary
It is difficult for the prior art to accurately measure and predict the wear amount of pressure steel pipes in hydropower stations during operation, mainly because the pressure, flow rate, sediment conditions of each type of steel pipe are very different from the material and sediment properties of steel pipes.
A test device and a test system for the amount of pipe wear is provided, including a first half pipe, a second half pipe, a sealing cover plate and a test pipe fitting. By simulating the flow of the medium in the real pipe, the wear of the test pipe fitting is measured, thereby simulating and predicting the wear of the real pipe.
Through this test device and system, the wear speed and wear amount of pipes can be accurately predicted, providing an accurate basis for the design, maintenance and life evaluation of pipes.
Smart Images
Figure CN222979333U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of pipeline wear detection, and in particular, to a test device and a test system for pipeline wear amount. Background Art
[0002] As an important part of the water conveyance system, the penstock of a hydropower station is subject to the scouring action of high-speed sediment-laden water flow for a long time, and is prone to wear, which affects the structural safety and service life.
[0003] Currently, in the related art, the methods for observing sediment wear of penstocks are as follows:
[0004] Direct observation method: By regularly checking and maintaining, directly observe the wear condition of the inner wall of the pipeline.
[0005] Model-based prediction method: According to fluid mechanics and wear theory, establish a mathematical model to predict the development of wear.
[0006] Numerical simulation technology: Use computational fluid dynamics (CFD) to simulate the wear process of sediment-laden water flow on the pipeline.
[0007] The methods in the related art, such as the direct observation method, can only qualitatively analyze the wear condition of sediment wear. The model-based and numerical technologies can only analyze wear through theoretical methods. However, due to the differences in the pressure, flow rate, sediment conditions, steel pipe material, and sediment physical properties of each penstock, it is difficult to accurately measure and predict the wear amount of the penstock during operation. Utility Model Content
[0008] The purpose of the present disclosure is to provide a test device and a test system for pipeline wear amount to solve the technical problems existing in the related art.
[0009] To achieve the above object, the present disclosure provides a test device for pipeline wear amount, the test device includes a first half pipe, a second half pipe, at least one sealing cover plate, and at least one test pipe fitting;
[0010] The first half pipe and the second half pipe are arranged opposite to each other to define a flow channel that is open on both sides for the test medium to flow through, and at least one opening groove communicating with the flow channel is provided on the first half pipe and / or the second half pipe;
[0011] The sealing cover plates are arranged in one-to-one correspondence with the opening grooves, and each sealing cover plate is sealingly arranged in the corresponding opening groove. At least one of the test pipe fittings is detachably arranged on the inner side surface of each sealing cover plate, and the test pipe fitting can be used to contact the test medium.
[0012] Optionally, two opening grooves are provided and include a first opening groove and a second opening groove, two sealing cover plates are provided and include a first sealing cover plate and a second sealing cover plate, and two test pipe fittings are provided and include a first test pipe fitting and a second test pipe fitting;
[0013] The first half pipe is provided with the first opening groove, and the second half pipe is provided with the second opening groove, wherein the first opening groove and the second opening groove are opposite and spaced apart;
[0014] The first sealing cover plate is sealingly arranged on the first opening groove, and the second sealing cover plate is sealingly arranged on the second opening groove;
[0015] The first test pipe fitting is detachably arranged on the inner side surface of the first sealing cover plate, and the second test pipe fitting is detachably arranged on the inner side surface of the second sealing cover plate.
[0016] Optionally, a first card slot is recessed on the inner side surface of the first sealing cover plate, and the first test pipe fitting is snap-fitted in the first card slot; a second card slot is recessed on the inner side surface of the second sealing cover plate, and the second test pipe fitting is snap-fitted in the second card slot.
[0017] Optionally, the first card slot is provided with two first inner flanges that are opposite and spaced apart, and the first inner flanges and the bottom wall of the first card slot are spaced apart to form a first slideway; the first card slot forms a first opening, and the first opening is arranged at the edge of the inner side surface of the first sealing cover plate and communicates with the first slideway; the first test pipe fitting includes a first test pipe fitting body and two first convex platforms that are oppositely arranged on both sides of the first test pipe fitting body; wherein, the first convex platform is inserted into the first slideway through the first opening and abuts against the first inner flange; and / or,
[0018] The second card slot is provided with two second inner flanges that are opposite and spaced apart, and the second inner flanges and the bottom wall of the second card slot are spaced apart to form a second slideway; the second card slot forms a second opening, and the second opening is arranged at the edge of the inner side surface of the second sealing cover plate and communicates with the second slideway; the second test pipe fitting includes a second test pipe fitting body and two second convex platforms that are oppositely arranged on both sides of the second test pipe fitting body; wherein, the second convex platform is inserted into the second slideway through the second opening and abuts against the second inner flange.
[0019] Optionally, the inner side surface of the first sealing cover plate is configured as a first curved surface, and the first test pipe fitting includes a second curved surface for contacting the test medium; the inner side surface of the second sealing cover plate is configured as a third curved surface, and the second test pipe fitting includes a fourth curved surface for contacting the test medium;
[0020] Among them, the radius of curvature of the first surface, the second surface, the third surface, and the fourth surface is all the first radius of curvature, where the first radius of curvature is used to be the same as half of the inner diameter of the real pipeline.
[0021] Optionally, the arc lengths of the second surface of the first test pipe fitting and the fourth surface of the second test pipe fitting are both the first arc length, the first arc length is used to be equal to 5% of the inner circumference of the real pipeline, and the first test pipe fitting and the second test pipe fitting are made of steel and their mass is not greater than 150 g; or,
[0022] the arc lengths of the second surface of the first test pipe fitting and the fourth surface of the second test pipe fitting are both the second arc length, the second arc length is used to be equal to 3% of the inner circumference of the real pipeline, and the first test pipe fitting and the second test pipe fitting are made of steel and their mass is not greater than 200 g.
[0023] Optionally, the test device further includes a thermometer, the sealing cover plate is formed with a temperature measurement hole, and the detection head of the thermometer can be inserted into the temperature measurement hole and abutted against the test pipe fitting.
[0024] The present disclosure also provides a test system for the pipeline wear amount, the test system includes the test device as described above, a first pipeline, a second pipeline, a third pipeline, a centrifugal pump, a driving motor, and a sand-water mixing tank provided with sand water;
[0025] The driving motor is in transmission connection with the centrifugal pump;
[0026] The inlet of the first pipeline is communicated with the outlet of the centrifugal pump, and the outlet of the first pipeline is communicated with the inlet of the flow channel;
[0027] The inlet of the second pipeline is communicated with the outlet of the flow channel, and the outlet of the second pipeline is communicated with the inlet of the sand-water mixing tank;
[0028] The inlet of the third pipeline is communicated with the outlet of the sand-water mixing tank, and the outlet of the third pipeline is communicated with the inlet of the centrifugal pump.
[0029] Optionally, the test system further includes a pressure gauge, an electromagnetic flowmeter, and a control valve, the pressure gauge is arranged on the first pipeline, the electromagnetic flowmeter and the control valve are arranged on the third pipeline, and the control valve is arranged downstream of the electromagnetic flowmeter.
[0030] Optionally, the test system further includes a cooling tank provided with cooling water, a cooling pump, and a cooling pipe. At least a part of the cooling pipe is disposed in the sand-water mixing tank, and both ends of the cooling pipe are disposed in the cooling water of the cooling tank. The cooling pump can perform circulating pumping through the cooling pipe to cool the sand water in the sand-water mixing tank.
[0031] In the above technical solution, by providing the first half pipe and the second half pipe that are mutually engaged to define a flow channel for the test medium to flow through, the test pipe fitting is detachably disposed on the plugging cover plate and can be used to contact the test medium. The detachable design facilitates removing the test pipe fitting for subsequent measurement. Among them, the test pipe fitting is used to simulate a real pipeline, and the test medium is used to simulate the medium flowing in the real pipeline. After being scoured for a period of time, the test pipe fitting will be worn. By measuring the weight of the test pipe fitting before and after the test, the lost mass of the test pipe fitting can be determined, and further the wear rate of the test pipe fitting per unit time can be determined, that is, the wear rate of the real pipeline can be simulated. Further, according to the concentration of the test medium, the wear amount of the test pipe fitting can be predicted, so that the wear amount of the real pipeline can be simulated. That is to say, through the test device for the wear amount of the pipeline of the present disclosure, the wear of the pipeline can be accurately predicted, providing an accurate basis for the design, maintenance, and life assessment of the pipeline.
[0032] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. They are used together with the following specific implementation to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0034] Figure 1 is an exploded structural schematic diagram of a test device for the wear amount of a pipeline according to an embodiment of the present disclosure.
[0035] Figure 2 is an overall structural schematic diagram of a test device for the wear amount of a pipeline according to an embodiment of the present disclosure.
[0036] Figure 3 is a side view of a test device for the wear amount of a pipeline according to an embodiment of the present disclosure.
[0037] Figure 4 is Figure 3 a schematic cross-sectional view taken along line A-A in
[0038] Figure 5 is a structural schematic diagram of the first half pipe or the second half pipe of a test device for the wear amount of a pipeline according to an embodiment of the present disclosure.
[0039] Figure 6 It is a schematic structural diagram of the first plugging cover plate or the second plugging cover plate of the test device for the pipeline wear amount according to an embodiment of the present disclosure.
[0040] Figure 7 It is a schematic structural diagram of the first test pipe fitting or the second test pipe fitting of the test device for the pipeline wear amount according to an embodiment of the present disclosure.
[0041] Figure 8 It is a schematic diagram of the test system for the pipeline wear amount according to an embodiment of the present disclosure.
[0042] Description of the reference numerals
[0043] 1. First half pipe; 2. Second half pipe; 3. Plugging cover plate; 4. Test pipe fitting; 5. First pipeline; 6. Second pipeline; 7. Third pipeline; 8. Centrifugal pump; 9. Driving motor; 10. Open slot; 101. First open slot; 102. Second open slot; 31. First plugging cover plate; 310. First card slot; 3101. First inner flange; 3102. First slideway; 3103. First open end; 32. Second plugging cover plate; 320. Second card slot; 3201. Second inner flange; 3202. Second slideway; 3203. Second open end; 41. First test pipe fitting; 411. First test pipe fitting body; 412. First boss; 42. Second test pipe fitting; 421. Second test pipe fitting body; 422. Second boss; 20. Sand-water mixing tank; 30. Pressure gauge; 40. Electromagnetic flowmeter; 50. Control valve; 60. Cooling tank; 70. Cooling pipe; 100. Flow channel; 200. First pipe section; 300. Second pipe section; 400. Test device for the pipeline wear amount. Detailed description of the specific implementation mode
[0044] The following will describe in detail the specific implementation mode of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation mode described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.
[0045] In the present disclosure, unless otherwise stated, the orientation words such as "inside, outside" refer to the inside and outside of the specific structural contour, and the terms such as "first, second" are only used to distinguish one element from another element, and do not have sequentiality and importance.
[0046] Refer to Figures 1 to 7As shown in the figure, the present disclosure provides a test device 400 for the wear amount of a pipeline. The test device includes a first half pipe 1, a second half pipe 2, at least one plugging cover plate 3, and at least one test pipe fitting 4. The first half pipe 1 and the second half pipe 2 are arranged opposite to each other to define a flow channel 100 that is open on both sides for the test medium to flow through. At least one opening groove 10 communicating with the flow channel 100 is provided on the first half pipe 1 and / or the second half pipe 2. The plugging cover plates 3 are arranged in one-to-one correspondence with the opening grooves 10, and the plugging cover plates 3 are pluggingly arranged in the corresponding opening grooves 10. At least one test pipe fitting 4 is detachably arranged on the inner side surface of each plugging cover plate 3, and the test pipe fitting 4 can be used to contact the test medium.
[0047] In the above technical solution, by arranging the mutually opposed first half pipe 1 and second half pipe 2 to define a flow channel 100 for the test medium to flow through, the test pipe fitting 4 is detachably arranged on the plugging cover plate 3 and can be used to contact the test medium. The detachable design facilitates removing the test pipe fitting 4 for subsequent measurement. Among them, the test pipe fitting 4 is used to simulate a real pipeline, and the test medium is used to simulate the medium flowing in the real pipeline. After being scoured for a period of time, the test pipe fitting 4 will be worn. By measuring the weight of the test pipe fitting 4 before and after the test, the lost mass of the test pipe fitting 4 can be determined, and further the wear rate of the test pipe fitting 4 per unit time can be determined, that is, the wear rate of the real pipeline can be simulated. Further, according to the concentration of the test medium, the wear amount of the test pipe fitting 4 can be predicted, so that the wear amount of the real pipeline can be simulated. That is to say, through the test device 400 for the wear amount of the pipeline of the present disclosure, the wear of the pipeline can be accurately predicted, providing an accurate basis for the design, maintenance, and life assessment of the pipeline.
[0048] It should be noted that, in order to improve the accuracy of the experiment, the flow rate of the above test medium in the flow channel 100 can be the same as the flow rate of the medium in the real pipeline.
[0049] In order to improve the authenticity of the simulation, computational fluid dynamics (CFD) can be used for auxiliary design. By modifying the cross-sectional shapes and sizes of the first half pipe 1, the second half pipe 2, the plugging cover plate 3, and the test pipe fitting 4, the velocity distribution of the test medium can be ensured to be basically the same as the velocity distribution of the medium in the real pipeline wall surface, thereby improving the accuracy of the test.
[0050] Optionally, a high-precision balance can be used to weigh the test pipe fitting 4 before and after the test respectively to obtain the lost mass of the test pipe fitting 4 before and after the test. Dividing it by the density ρ, surface area A, and test time t of the test pipe fitting 4 can obtain the surface wear depth, that is, the wear rate s, of the test pipe fitting 4 per unit time, that is:
[0051] .
[0052] Monitor the concentration C of the test medium during operation vi , continuously monitor the concentration and time within a certain operating time, and predict the wear amount according to the wear rate s and the test medium concentration C in the previous item v0 The wear amount can be predicted as follows:
[0053] .
[0054] The above-mentioned test medium can be a sand-laden water flow, and the test pipe fitting 4 is used to simulate the penstock of a hydropower station. That is, the above-mentioned test device can be used to simulate and predict the wear amount of the penstock of a hydropower station under the action of sand-laden water flow. Among them, the test medium can be accurately proportioned in the laboratory with the same material and particle size distribution as real sand, and the test pipe fitting 4 is made of real steel pipe material for test and measurement, so as to improve the measurement accuracy.
[0055] Optionally, as shown in Figures 1 to 7 , two opening grooves 10 are provided and include a first opening groove 101 and a second opening groove 102, two plugging cover plates 3 are provided and include a first plugging cover plate 31 and a second plugging cover plate 32, and two test pipe fittings 4 are provided and include a first test pipe fitting 41 and a second test pipe fitting 42. The first half pipe 1 is provided with a first opening groove 101, and the second half pipe 2 is provided with a second opening groove 102. Among them, the first opening groove 101 and the second opening groove 102 are opposite and spaced apart; the first plugging cover plate 31 is pluggingly arranged in the first opening groove 101, and the second plugging cover plate 32 is pluggingly arranged in the second opening groove 102; the first test pipe fitting 41 is detachably arranged on the inner side surface of the first plugging cover plate 31, and the second test pipe fitting 42 is detachably arranged on the inner side surface of the second plugging cover plate 32. By providing the first test pipe fitting 41 and the second test pipe fitting 42, comparative analysis can be carried out to further improve the measurement accuracy. However, the present disclosure does not limit the number of the plugging cover plates 3 and the test pipe fittings 4.
[0056] Optionally, as shown in Figure 6 , a first card slot 310 is recessed on the inner side surface of the first plugging cover plate 31, and the first test pipe fitting 41 is snap-fitted in the first card slot 310; a second card slot 320 is recessed on the inner side surface of the second plugging cover plate 32, and the second test pipe fitting 42 is snap-fitted in the second card slot 320. The first card slot 310 and the second card slot 320 can be constructed into any suitable shape and structure, which is not limited in the present disclosure, as long as it is convenient for the installation and disassembly of the first test pipe fitting 41 and the second test pipe fitting 42.
[0057] For example, as shown in Figures 2 to 7As shown, the first card slot 310 is provided with two first inner flanges 3101 that are opposite and spaced apart. The first inner flanges 3101 and the bottom wall of the first card slot 310 are spaced apart to form a first slideway 3102. The first card slot 310 forms a first opening 3103. The first opening 3103 is provided at the edge of the inner side surface of the first sealing cover plate 31 and communicates with the first slideway 3102. The first test pipe fitting 41 includes a first test pipe fitting main body 411 and two first bosses 412 that are disposed on both sides of the first test pipe fitting main body 411 in opposite directions. Among them, the first boss 412 is inserted into the first slideway 3102 through the first opening 3103 and is abutted against the first inner flange 3101.
[0058] For example, with reference to Figures 2 to 7 As shown, the second card slot 320 is provided with two second inner flanges 3201 that are opposite and spaced apart. The second inner flanges 3201 and the bottom wall of the second card slot 320 are spaced apart to form a second slideway 3202. The second card slot 320 forms a second opening 3203. The second opening 3203 is provided at the edge of the inner side surface of the second sealing cover plate 32 and communicates with the second slideway 3202. The second test pipe fitting 42 includes a second test pipe fitting main body 421 and two second bosses 422 that are disposed on both sides of the second test pipe fitting main body 421 in opposite directions. Among them, the second boss 422 is inserted into the second slideway 3202 through the second opening 3203 and is abutted against the second inner flange 3201.
[0059] That is to say, the first card slot 310 and the second card slot 320 are configured in the shape of a T-shaped groove. In other embodiments, the first card slot 310 and the second card slot 320 can also be configured as a bevel trapezoidal groove, and the present disclosure does not limit this. Additionally, the installation gap can be less than 0.01 mm to improve the installation accuracy and thereby improve the test accuracy.
[0060] Optionally, the inner side surface of the first sealing cover plate 31 is configured as a first curved surface, and the first test pipe fitting 41 includes a second curved surface for contacting the test medium. The inner side surface of the second sealing cover plate 32 is configured as a third curved surface, and the second test pipe fitting 42 includes a fourth curved surface for contacting the test medium. Among them, the curvature radii of the first curved surface, the second curved surface, the third curved surface, and the fourth curved surface are all the first curvature radius, and the first curvature radius is the same as half of the inner diameter of the actual pipeline.
[0061] In other embodiments, the arc lengths of the second curved surface of the first test pipe fitting 41 and the fourth curved surface of the second test pipe fitting 42 are both a first arc length, and the first arc length is used to be equal to five percent of the inner circumference of the real pipeline, and the first test pipe fitting 41 and the second test pipe fitting 42 are made of steel and have a mass not greater than 150 g; or, the arc lengths of the second curved surface of the first test pipe fitting 41 and the fourth curved surface of the second test pipe fitting 42 are both a second arc length, and the second arc length is used to be equal to three percent of the inner circumference of the real pipeline, and the first test pipe fitting 41 and the second test pipe fitting 42 are made of steel and have a mass not greater than 200 g.
[0062] In one embodiment, the test device may further include a thermometer (not shown), the sealing cover plate 3 is formed with a temperature measurement hole, and the detection head of the thermometer can be inserted into the temperature measurement hole and abutted against the test pipe fitting 4, so as to monitor the influence of the wear of the test medium on the temperature of the test pipe fitting 4 during the test process.
[0063] In addition, the above-mentioned test device may further include a first pipe section 200 and a second pipe section 300. The first pipe section 200 and the second pipe section 300 can be respectively connected to both sides of the flow channel 100 in a penetrating manner, wherein the first pipe section 200 is connected to the first side of the first half pipe 1 and the second half pipe 2, and the second pipe section 300 is connected to the second side of the first half pipe 1 and the second half pipe 2.
[0064] The present disclosure also provides a test system for the pipeline wear amount. Referring to Figure 8 as shown, the test system includes the above-mentioned test device, a first pipeline 5, a second pipeline 6, a third pipeline 7, a centrifugal pump 8, a driving motor 9, and a sand-water mixing tank 20 provided with sand water. The driving motor 9 is in transmission connection with the centrifugal pump 8;
[0065] The inlet of the first pipeline 5 is communicated with the outlet of the centrifugal pump 8, and the outlet of the first pipeline 5 is communicated with the inlet of the flow channel 100; the inlet of the second pipeline 6 is communicated with the outlet of the flow channel 100, and the outlet of the second pipeline 6 is communicated with the inlet of the sand-water mixing tank 20; the inlet of the third pipeline 7 is communicated with the outlet of the sand-water mixing tank 20, and the outlet of the third pipeline 7 is communicated with the inlet of the centrifugal pump 8.
[0066] In the above technical solution, the centrifugal pump 8 is driven by the driving motor 9 to circulate and pump the sand-water mixture in the sand-water mixing tank 20 within the flow channel 100 of the above test device. After being scoured for a period of time, the test pipe fitting 4 will be worn. By measuring the weight of the test pipe fitting 4 before and after the test, the mass loss of the test pipe fitting 4 can be determined, and thus the wear rate of the test pipe fitting 4 per unit time can be determined, that is, the wear rate of the real pipeline can be simulated. Further, according to the concentration of the test medium, the wear amount of the test pipe fitting 4 can be predicted, so that the wear amount of the real pipeline can be simulated. That is to say, through the test system of the present disclosure, the wear of the pipeline can be accurately predicted, providing an accurate basis for the design, maintenance and life assessment of the pipeline.
[0067] Optionally, in order to prevent the sediment in the sand-water mixing tank 20 from settling to the bottom of the tank due to gravity and being unable to be fully mixed with water, a sand flushing pump can be provided for sufficient stirring to fully mix the water and sediment and prepare the sediment concentration required for the test.
[0068] Optionally, as shown in Figure 8 the test system further includes a pressure gauge 30, an electromagnetic flowmeter 40 and a control valve 50. The pressure gauge 30 is arranged on the first pipeline 5, the electromagnetic flowmeter 40 and the control valve 50 are arranged on the third pipeline 7, and the control valve 50 is arranged downstream of the electromagnetic flowmeter 40 to effectively monitor and regulate the pipeline.
[0069] Optionally, as shown in Figure 8 the test system further includes a cooling tank 60 provided with cooling water, a cooling pump and a cooling pipe 70. The cooling pipe 70 is at least partially arranged in the sand-water mixing tank 20, and both ends of the cooling pipe 70 are arranged in the cooling water of the cooling tank 60. The cooling pump can circulate and pump through the cooling pipe 70 to cool the sand-water mixture in the sand-water mixing tank 20, avoiding the over-high temperature of the sand-water mixture to simulate the temperature of the real sand-water mixture.
[0070] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
[0071] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination methods.
[0072] In addition, any combination can be made between various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.
Claims
1. A test device for pipeline wear, characterized in that: The pipeline wear test device comprises a first half pipe, a second half pipe, at least one plugging cover plate and at least one test pipe member; The first half tube and the second half tube are arranged to match each other to define a flow channel for the test medium to flow and the flow channel is connected on both sides, and the first half tube and / or the second half tube are provided with at least one open groove communicating with the flow channel; The blocking cover plates are arranged in one-to-one correspondence with the opening grooves, and the blocking cover plates are sealingly arranged in the corresponding opening grooves. At least one test tube is detachably arranged on the inner side surface of each blocking cover plate, and the test tube can be used to contact the test medium.
2. The pipeline wear test device according to claim 1, characterized in that: The two opening slots are provided and include a first opening slot and a second opening slot, the two blocking cover plates are provided and include a first blocking cover plate and a second blocking cover plate, and the two test pipe pieces are provided and include a first test pipe piece and a second test pipe piece; The first half pipe is provided with the first opening slot, and the second half pipe is provided with the second opening slot, wherein the first opening slot is opposite to the second opening slot and is spaced apart from each other; The first blocking cover plate is sealingly disposed on the first opening groove, and the second blocking cover plate is sealingly disposed on the second opening groove; The first test tube piece is detachably disposed on the inner side surface of the first sealing cover plate, and the second test tube piece is detachably disposed on the inner side surface of the second sealing cover plate.
3. The pipeline wear test device according to claim 2, characterized in that: The inner side surface of the first blocking cover plate is recessed with a first slot, and the first test tube is clamped in the first slot; the inner side surface of the second blocking cover plate is recessed with a second slot, and the second test tube is clamped in the second slot.
4. The pipeline wear test device according to claim 3, characterized in that: The first card slot is provided with two first inner flanges which are opposite to each other and spaced apart, and a first slideway is formed between the first inner flange and the bottom wall of the first card slot; the first card slot is formed with a first opening, and the first opening is arranged at the edge of the inner side surface of the first blocking cover plate and is connected to the first slideway; the first test tube comprises a first test tube body and two first bosses which are arranged opposite to each other on both sides of the first test tube body; wherein the first boss is inserted into the first slideway through the first opening and is arranged to abut against the first inner flange; and / or, The second card slot is provided with two second inner flanges that are opposite to and spaced apart from each other, and a second slideway is formed between the second inner flange and the bottom wall of the second card slot; a second opening is formed in the second card slot, and the second opening is arranged at the edge of the inner side surface of the second blocking cover plate and is connected to the second slideway; the second test tube includes a second test tube body and two second bosses that are arranged back to back on both sides of the second test tube body; wherein, the second boss is inserted into the second slideway through the second opening and is abutted against the second inner flange.
5. The pipeline wear test device according to claim 3, characterized in that: The inner side surface of the first plugging cover plate is configured as a first curved surface, and the first test tube includes a second curved surface for contacting the test medium; the inner side surface of the second plugging cover plate is configured as a third curved surface, and the second test tube includes a fourth curved surface for contacting the test medium; The curvature radii of the first curved surface, the second curved surface, the third curved surface and the fourth curved surface are all first curvature radii, wherein the first curvature radius is used to be the same as half of the inner diameter of a real pipe.
6. The pipeline wear test device according to claim 5, characterized in that: The arc length of the second curved surface of the first test tube and the arc length of the fourth curved surface of the second test tube are both the first arc length, the first arc length is used to be equal to 5% of the inner circumference of the real pipeline, and the first test tube and the second test tube are made of steel and have a mass of no more than 150g; or, The arc length of the second curved surface of the first test tube and the arc length of the fourth curved surface of the second test tube are both second arc lengths, and the second arc length is equal to three percent of the inner circumference of the real pipeline. The first test tube and the second test tube are made of steel and have a mass of no more than 200g.
7. The pipeline wear test device according to any one of claims 1 to 6, characterized in that: The test device further comprises a temperature measuring meter. The blocking cover plate is formed with a temperature measuring hole. The detection head of the temperature measuring meter can be inserted into the temperature measuring hole and abut against the test pipe.
8. A pipeline wear test system, characterized in that: The test system comprises a test device according to any one of claims 1 to 7, a first pipeline, a second pipeline, a third pipeline, a centrifugal pump, a drive motor, and a sand-water mixing tank provided with sand and water; The driving motor is drivingly connected to the centrifugal pump; The inlet of the first pipeline is communicated with the outlet of the centrifugal pump, and the outlet of the first pipeline is communicated with the inlet of the flow channel; The inlet of the second pipeline is communicated with the outlet of the flow channel, and the outlet of the second pipeline is communicated with the inlet of the sand-water mixing tank; The inlet of the third pipeline is communicated with the outlet of the sand-water mixing tank, and the outlet of the third pipeline is communicated with the inlet of the centrifugal pump.
9. The pipeline wear test system according to claim 8, characterized in that: The test system also includes a pressure gauge, an electromagnetic flowmeter and a control valve. The pressure gauge is arranged in the first pipeline, the electromagnetic flowmeter and the control valve are arranged in the third pipeline, and the control valve is arranged downstream of the electromagnetic flowmeter.
10. The pipeline wear test system according to claim 8, characterized in that: The test system also includes a cooling tank equipped with cooling water, a cooling pump and a cooling pipe. The cooling pipe is at least partially arranged in the sand-water mixing tank. Both ends of the cooling pipe are arranged in the cooling water of the cooling tank. The cooling pump can circulate and pump through the cooling pipe to cool the sand and water in the sand-water mixing tank.