A pipeline mortar abrasion rate testing device

Abstract

The utility model provides a pipeline mortar wear rate testing arrangement, including test board, the upper portion of test board is opened with a plurality of mounting holes, is provided with the mounting seat in each mounting hole, the lower part of mounting seat is provided with universal adjusting assembly, the lower part of universal adjusting assembly is provided with the clamping sleeve for clamping fixed sample pipeline, universal adjusting assembly can adjust the inclination angle of clamping sleeve, the utility model can realize the convenient and quick adjustment of the position of clamping sleeve through universal adjusting piece, is convenient for simulating the real simulation experiment operation of the wear rate of mortar of sample pipeline under various real installation scenes, is more favorable to the accuracy of pipeline wear rate test operation, greatly improves the reference value of detection result.

Description

Technical Field

[0001] This utility model relates to the technical field of wear rate testing equipment, specifically to a pipe mortar wear rate testing device. Background Technology

[0002] Wear-resistant pipes are used in material transport applications such as pneumatic conveying and pumping slurries. Due to the high hardness, high velocity, and large flow rate of the transported media, long-term impact, abrasion, and corrosion occur on the pipe walls, causing ordinary pipes to easily wear through and shorten their service life. Polyolefin composite wear-resistant pipes, using polyolefin wear-resistant material as the wear-resistant layer and co-extruded with a base pipe, are high-performance wear-resistant pipes suitable for long-term operation and transporting various liquids, slurries, and granular solids, requiring wear resistance. The wear rate of polyolefin composite wear-resistant pipes typically requires testing equipment.

[0003] The mortar abrasion test is a method for detecting the abrasion resistance of a material, requiring a mortar abrasion testing machine for operation. Patent document CN101710052B discloses a method for testing the abrasion resistance of ultra-high molecular weight polyethylene, which includes a mortar testing machine. This machine comprises an abrasion test container, grinding mortar, a baffle, a fixing fixture, a rotating shaft, a sample, and a cooling jacket. The upper part of the rotating shaft is connected to the abrasion test container, and the lower part is connected to the fixing fixture, on which the sample to be tested is fixed. The grinding mortar is a solid-liquid mixture of quartz sand and water in a specific ratio. The pre-prepared grinding mortar is placed inside the test container, and the lower end of the rotating shaft extends into the grinding mortar, causing the sample to rotate. The cooling jacket is fitted outside the grinding test container, and its internal space is used to circulate a constant-temperature liquid to maintain a stable specific temperature condition within the abrasion test container.

[0004] Traditional testing devices have fixed pipe installation angles (mostly horizontal or vertical), which cannot simulate the complex angles such as tilting and deflection of pipes caused by terrain and installation errors in actual engineering. As a result, the test results deviate significantly from the actual wear rate and have low reference value. Utility Model Content

[0005] In view of this, the present invention provides a pipe mortar wear rate testing device, which can adjust the tilt angle of the jacket through a universal adjustment component. This solves the problem that traditional testing devices have fixed pipe installation angles (mostly horizontal or vertical), which cannot simulate the complex angles such as tilting and deflection of pipes caused by terrain and installation errors in actual engineering, resulting in large deviations between the test results and the actual wear rate, and low reference value.

[0006] To address the aforementioned technical problems, this utility model provides a pipe mortar wear rate testing device, including a test bench. The upper part of the test bench has multiple mounting holes, each containing a mounting base. A universal adjustment component is located at the lower part of the mounting base, and a clamp for clamping and fixing the sample pipe is located below the universal adjustment component. The universal adjustment component can adjust the tilt angle of the clamp. This utility model allows for convenient and rapid adjustment of the clamp's position through the universal adjustment component, facilitating realistic simulation experiments of the mortar wear rate of the sample pipe under various real installation scenarios. This improves the accuracy of pipe wear rate testing and significantly enhances the reference value of the test results.

[0007] The universal adjustment assembly includes a universal ball set in the mounting hole, a rotating seat set on the outside of the universal ball, and a sleeve set at the lower part of the rotating seat. This utility model can rotate the universal ball to the angle of the actual pipeline installation scenario by turning the rotating seat to move the sleeve around the universal ball, which greatly improves the portability of the test results and the matching degree of the test results with the wear rate of the actual installation scenario.

[0008] The side wall of the rotary seat is provided with a threaded hole, and a locking element is threaded into the threaded hole. The locking element can lock the rotation of the universal ball within the rotary seat. This utility model can release the rotation of the universal ball by loosening the locking element, and then rotate the rotary seat by gripping it, so as to make it rotate around the universal ball, thereby realizing convenient and quick adjustment of the tilt angle of the clamp. Moreover, the position of the rotary seat and the clamp can be locked and fixed by tightening the locking element, making the operation more convenient and efficient.

[0009] The locking component is a bolt.

[0010] The clamp includes a fixed clamp located at the lower part of the rotating base and a rotating clamp hinged to one end of the fixed clamp. The other end of the rotating clamp is provided with a locking pin that matches the fixed clamp. This utility model can achieve the clamping and fixing of the pipe by opening the locking pin, rotating the rotating clamp to separate it from the fixed clamp, placing the pipe to be tested into the fixed clamp, and then locking the rotating clamp and the fixed clamp together with the locking pin.

[0011] Both the fixed clamp and the rotating clamp are fitted with protective pads. This utility model can prevent the fixed clamp and the rotating clamp from directly clamping and damaging the outer wall of the pipe during the process, which greatly improves the service life of the pipe.

[0012] The protective pad is a rubber pad.

[0013] The test bench is equipped with four legs at the bottom, which are evenly distributed at the four corners of the lower part of the test bench. Reinforcing plates are installed between the legs. This utility model can achieve a firm installation and fixation of the test bench and the pipe mortar wear rate test device through the legs and reinforcing plates, making the operation more convenient.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. Accurately simulate working conditions and improve test realism: This utility model can achieve convenient and quick adjustment of the installation angle of the pipeline through the universal adjustment component, which greatly reduces the deviation between the test results and the actual wear rate, and solves the problem of angle simulation distortion in traditional devices.

[0015] 2. Adaptable to multiple pipe diameters and prevents damage, protecting test specimens: This utility model can be adapted to DN20-DN100 pipes through an openable and closable jacket. The protective pad buffers the clamping force, greatly reducing the pipe crushing rate and reducing the cost of test specimen wear.

[0016] 3. Secure angle locking enhances test stability: This utility model can greatly increase the stability of pipeline testing after the locking bolt is locked, significantly improving the repeatability of single test data and solving the problem of unstable fixation after adjustment.

[0017] 4. Reliable vibration-resistant support, reducing detection errors: This utility model can absorb vibration through the synergistic effect of reinforcing plates and anti-slip pads, greatly reducing wear detection errors and improving the reliability of test data. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the pipe mortar wear rate testing device of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a front view of the pipe mortar wear rate testing device of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 100, test bench; 110, mounting hole; 120, support leg; 130, reinforcing plate; 200, mounting base; 300, universal adjustment assembly; 310, universal ball; 320, swivel base; 321, threaded hole; 330, locking element; 400, sleeve; 410, fixing clamp; 420, rotating clamp; 430, locking pin. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-3The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1-3 As shown: This embodiment provides a pipe mortar wear rate testing device, including a test bench 100. The test bench 100 is made of Q345B low alloy high strength steel, which has high strength and deformation resistance and is suitable for multiple test stations. The test bench 100 has multiple mounting holes 110 on its upper part, and each mounting hole 110 is provided with a mounting base 200. A universal adjustment component 300 is provided at the lower part of the mounting base 200, and a clamp 400 for clamping and fixing the sample pipe is provided at the lower part of the universal adjustment component 300. The universal adjustment component 300 can adjust the tilt angle of the clamp 400. This utility model can make the position of the clamp 400 convenient and quick to adjust through the universal adjustment component, which is conducive to the realistic simulation of the wear rate of the mortar of the sample pipe under various real installation scenarios, and is more conducive to the accuracy of pipe wear rate testing, greatly improving the reference value of the test results.

[0022] According to one embodiment of the present invention, such as Figure 1-3 As shown, the universal adjustment assembly 300 includes a universal ball 310 disposed within a mounting hole 110, a swivel base 320 disposed on the outer side of the universal ball 310, a sleeve 400 disposed at the lower part of the swivel base 320, and a mounting base 200 made of 45# steel, heat-treated, cylindrical in shape, and interference-fitted into the mounting hole 110 of the test bench 100, with the inner wall polished to reduce friction; the universal ball 310 is made of 40Cr alloy structural steel, hardened, and surface-plated with hard chrome to enhance wear resistance, its diameter matching the inner diameter of the mounting base 200, allowing for 360° rotation at any angle; the swivel base 320 is made of 45# steel. The steel plate has a spherical groove at the top to fit the universal ball 310, and a flange at the bottom to connect with the clamp 400. It also has a threaded hole 321 on the side wall. The locking element 330 is a high-strength bolt (from Shanghai Shenguang High-Strength Bolt Co., Ltd.), threaded into the threaded hole 321 of the rotating base 320. It has a rubber pressure head at the end, which, when tightened, can press against the universal ball 310 to achieve locking. This invention allows the clamp 400 to rotate around the universal ball 310 to the angle required for actual pipeline installation by rotating the rotating base 320, thus greatly improving the portability of the test results and the accuracy of the test results in matching the wear rate under actual installation conditions.

[0023] According to another embodiment of the present invention, such as Figure 1 and Figure 2As shown, a threaded hole 321 is provided on the side wall of the rotary seat 320. A locking member 330 is threadedly connected to the threaded hole 321. The locking member 330 can lock the rotation of the universal ball 310 within the rotary seat 320. This utility model can release the rotation of the universal ball 310 by loosening the locking member 330, and then rotate the rotary seat 320 by gripping it, so that it rotates around the universal ball 310, thereby realizing convenient and quick adjustment of the tilt angle of the clamp 400. Moreover, the position of the rotary seat 320 and the clamp 400 can be locked and fixed by tightening the locking member 330, making the operation more convenient and efficient.

[0024] The locking component 330 is a bolt.

[0025] According to another embodiment of the present invention, such as Figure 1 and Figure 3 As shown, the clamp 400 includes a fixed clamp 410 disposed at the lower part of the rotary seat 320 and a rotating clamp 420 hinged to one end of the fixed clamp 410. The other end of the rotating clamp 420 is provided with a locking pin 430 adapted to the fixed clamp 410. Both the fixed clamp 410 and the rotating clamp 420 are made of 201 stainless steel and polished to avoid sharp edges. The two are hinged by stainless steel hinges. The end of the rotating clamp 420 is provided with a U-shaped groove, and the corresponding position of the fixed clamp 410 is welded with a locking stud. The locking pin 430 is a stainless steel wing bolt, used with a nut, which can quickly lock or loosen the clamp. This utility model can achieve the clamping and fixing operation of the pipe by opening the locking pin 430, rotating the rotating clamp 420 to separate it from the fixed clamp 410, then placing the sample pipe into the fixed clamp 410, and then fastening the rotating clamp 420 to the fixed clamp 410 and locking it with the locking pin 430.

[0026] Both the fixed clamp 410 and the rotating clamp 420 are fitted with protective pads. The protective pads are made of nitrile rubber and are bonded to the inside of the clamps with epoxy resin. They have elastic cushioning and anti-slip functions to prevent damage to the pipe during clamping. This utility model can prevent the fixed clamp 410 and the rotating clamp 420 from directly clamping and damaging the outer wall of the pipe through the protective pads, which greatly improves the service life of the pipe.

[0027] The test bench 100 is equipped with support legs 120 at its bottom, evenly distributed at the four corners of the lower part of the test bench 100. Reinforcing plates 130 are installed between the support legs 120. There are four support legs 120 in total, made of Q345B steel, vertically welded to the four corners of the lower part of the test bench 100, with anti-slip rubber pads on their bottoms. The reinforcing plates 130 are made of Q235 steel and are welded in a "cross" shape between the support legs 120, enhancing the overall support rigidity and reducing test vibration. This utility model allows for the secure installation and fixation of the test bench 100 and the pipe mortar wear rate testing device through the support legs 120 and reinforcing plates 130, making operation more convenient.

[0028] The pipeline mortar wear rate testing device also includes a flow sensor, a pressure sensor, and a data acquisition instrument installed on the pipeline. The flow sensor is an LWGY-15 turbine flow sensor from Jiangsu Huaian Senling Instrument Co., Ltd., used to monitor the mortar delivery flow rate; the pressure sensor is an MPM480 diffused silicon pressure sensor from MicroSensor Co., Ltd., used to monitor the mortar pressure in the pipeline; and the data acquisition instrument is a USB5935 data acquisition card from Beijing Altai Technology Development Co., Ltd., which can simultaneously collect flow rate, pressure, and wear data to visualize the test process. How to use this utility model: First, it needs to be clarified that the experimental device involved in this utility model is mainly used for testing the wear rate of pipe mortar. This utility model takes the testing of the wear rate of polyolefin composite wear-resistant pipe mortar as an example to explain its working principle and usage method in detail. The working principle is as follows: This device achieves precise testing through a collaborative mechanism of "omnidirectional angle simulation - buffer clamping protection - rigid locking fixation - vibration-resistant and stable support": Complex angle simulation principle: Loosen the locking bolt on the rotator 320, and the rotator 320 can rotate around the universal ball 310 at any angle of 360° (tilt angle range 0-90°), accurately simulating the installation posture of the pipeline such as tilt and deflection in actual engineering, so that the mortar flow trajectory is consistent with the real working conditions, and eliminating the test distortion caused by angle deviation. Pipeline protection clamping principle: The 400 clamp adopts an openable structure to adapt to pipes of different diameters (DN20-DN100). The nitrile rubber protective pad on the inside of the clamp can buffer the clamping force and avoid hard contact that could cause damage to the outer wall of the pipe. At the same time, it enhances friction to prevent the pipe from sliding during the test. Angle stabilization locking principle: After adjusting to the target angle, tighten the locking bolt. Its end rubber pressure head is in close contact with the universal ball 310, and the position of the rotating seat 320 is locked by friction. The angle deviation is greatly reduced when subjected to mortar impact force during the test, ensuring stable test conditions. Vibration-resistant support principle: The four legs 120, together with the cross-shaped reinforcing plate 130, form a rigid support structure, which reduces the natural vibration frequency of the test bench 100. With the anti-slip pads at the bottom of the legs 120, it can absorb more than 80% of the vibration interference generated by mortar transportation, and avoid vibration affecting the accuracy of wear detection. The usage method is as follows: Device debugging and preparation: Check the rotation flexibility of the 310 universal ball, the reliability of the locking bolts, and the adhesion of the protective pads; connect the flow sensor, pressure sensor, and data acquisition instrument, and calibrate the sensor accuracy (error ≤ ±0.3%); ensure that the test bench 100 is placed stably and that the anti-slip pads of the support legs 120 are in close contact with the ground; Pipe installation and clamping: Loosen the locking pin 430 of the clamp 400, flip open the rotating clamp 420, put the pipe to be tested into the fixed clamp 410, close the rotating clamp 420, tighten the locking pin 430, and ensure that the pipe is firmly clamped and the protective pad is in close contact with the outer wall of the pipe. Angle adjustment and fixing: According to the requirements of the simulated working conditions, grip the rotating seat 320 and rotate it around the universal ball 310 to adjust the pipeline to the target angle (such as a 30° tilt angle). After confirming the angle with a protractor, tighten the locking bolt to lock the position of the rotating seat 320. Test run and data acquisition: Start the mortar delivery system and monitor the mortar flow rate, pipeline pressure and delivery time in real time using a data acquisition instrument; after the test, shut down the system, remove the pipeline to check the wear (weighing method or wall thickness measurement method), and record the data; Maintenance and Storage: Loosen the locking pin 430 and the locking bolt, and remove the pipe; rinse the jacket 400 and the universal adjustment component 300 with clean water to remove residual mortar; check the wear of the universal ball 310 monthly and apply Great Wall brand No. 3 lithium-based grease to reduce friction; replace the worn protective pads and anti-slip pads quarterly.

[0029] The test method for wear rate of polyolefin mortar is as follows: Step 1: Preparation Select qualified polyolefin composite pipe samples and process them into standard specimens of specified dimensions; prepare mortar according to the set particle size distribution, wherein the mortar is composed of sand particles of different sizes and water, specifically: sand particles with a diameter less than 0.1 mm account for 10-15%, sand particles with a diameter of 0.1-0.3 mm account for 30-40%, sand particles with a diameter of 0.3-0.5 mm account for 30-40%, and sand particles with a diameter greater than 0.5 mm account for 10-15%, with a water-to-sand mass ratio of 1:2-1:3; prepare a mortar abrasion testing machine and a balance, calibrate and adjust the equipment to ensure that it is in normal working condition.

[0030] Step Two: Experimental Process Fix the standard specimen on the mortar abrasion testing machine, set the impact speed to 15-25 m / s, and control the action time of the mortar to 60-120 minutes. Start the mortar abrasion testing machine to allow the mortar to erode and wear the specimen at the set speed and flow rate.

[0031] Step 3: Data Measurement and Calculation Before and after the wear test, the mass of the sample was accurately weighed using a balance, and the mass data was recorded. The wear rate of the polyolefin composite pipe under specific wear conditions was calculated using the formula: Wear rate = (Sample mass before test - Sample mass after test) / Sample mass before test × 100.

[0032] Step 4: Simulation of other operating conditions In mortar abrasion rate tests, in addition to simulating the erosion and abrasion of sand-containing materials, it is also possible to simultaneously simulate various complex working conditions such as high temperature, high pressure, and chemical corrosion, so that the test results are closer to the actual use environment of the pipeline.

[0033] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A pipe mortar wear rate testing device, comprising a test bench (100), characterized in that: The test bench (100) has multiple mounting holes (110) on its upper part. Each mounting hole (110) is provided with a mounting base (200). The mounting base (200) is provided with a universal adjustment assembly (300) at its lower part. The universal adjustment assembly (300) is provided with a clamp (400) for clamping and fixing the sample pipe at its lower part. The universal adjustment assembly (300) can adjust the tilt angle of the clamp (400).

2. The pipe mortar wear rate testing device as described in claim 1, characterized in that: The universal adjustment assembly (300) includes a universal ball (310) disposed in a mounting hole (110), a swivel (320) disposed on the outside of the universal ball (310), and a sleeve (400) disposed on the lower part of the swivel (320).

3. The pipe mortar wear rate testing device as described in claim 2, characterized in that: The side wall of the rotary seat (320) is provided with a threaded hole (321), and a locking member (330) is threadedly connected in the threaded hole (321). The locking member (330) can lock the rotation of the universal ball (310) in the rotary seat (320).

4. The pipe mortar wear rate testing device as described in claim 3, characterized in that: The locking element (330) is a bolt.

5. The pipe mortar wear rate testing device as described in claim 1, characterized in that: The sleeve (400) includes a fixed clamp (410) disposed at the lower part of the rotating base (320) and a rotating clamp (420) hinged to one end of the fixed clamp (410). The other end of the rotating clamp (420) is provided with a locking pin (430) adapted to the fixed clamp (410).

6. The pipe mortar wear rate testing device as described in claim 5, characterized in that: Protective pads are fitted on both the fixed clamp (410) and the rotating clamp (420).

7. The pipe mortar wear rate testing device as described in claim 6, characterized in that: The protective pad is a rubber pad.

8. The pipe mortar wear rate testing device as described in claim 1, characterized in that: The bottom of the test bench (100) is provided with support legs (120), and a reinforcing plate (130) is provided between the support legs (120).

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