A device for testing the wear resistance of the inner wall of a mine hoisting vertical pipe

Abstract

The utility model relates to deep sea mining equipment technical field especially relates to a kind of wear resistance ability test device of mining riser inner wall.This utility model includes test sample pipe, pumping system, material water separation system, feeding system, loading system and measurement system, the bottom and one side of test sample pipe are equipped with pumping system, the side of pumping system is equipped with material water separation system, material water separation system and pumping system between are equipped with feeding system, and measurement system is equipped between feeding system and test sample pipe, and the top of test sample pipe is fixed with loading system.This utility model is reproduced by the structure design of test sample pipe, pumping system, material water separation system, feeding system, loading system and measurement system, this device can both reproduce the external dynamic load of mining riser and the change of slurry concentration in pipe, also can monitor the change condition of riser stress with wear process, provide support for riser wall thickness design and service life evaluation, and it is favorable to use.

Description

Technical Field

[0001] This utility model relates to the field of deep-sea mining equipment technology, and in particular to a test device for the wear resistance of the inner wall of a mining riser. Background Technology

[0002] Deep-sea ore hoisting risers are core equipment connecting surface support vessels and seabed mining vehicles, and their reliability directly determines the success or failure of the entire mining operation. During hoisting, the riser continuously transports high-concentration slurry containing ore particles. These particles continuously erode the inner wall of the riser, causing it to wear down and thin, reducing reliability. Once wear accumulates to a certain extent, the riser system may break and fall into the sea under external dynamic loads. Therefore, during riser design, it is necessary to understand the wear resistance of the pipeline under external dynamic loads through testing in advance, in order to optimize the pipeline wall thickness or assess its service life. Existing wear testing devices cannot reproduce the external dynamic loads and changes in slurry concentration within the riser, nor can they monitor changes in riser stress during the wear process. Therefore, we propose a test device for the wear resistance of the inner wall of a hoisting riser. Utility Model Content

[0003] The purpose of this invention is to provide a test device for the wear resistance of the inner wall of a mining riser, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A test device for the wear resistance of the inner wall of a mining riser includes a test sample tube, a pumping system, a material-water separation system, a feeding system, a loading system, and a measuring system. The pumping system is installed at the bottom and one side of the test sample tube, the material-water separation system is installed on one side of the pumping system, the feeding system is installed between the material-water separation system and the pumping system, the measuring system is installed between the feeding system and the test sample tube, and the loading system is fixed at the top of the test sample tube.

[0006] Preferably, the pumping system consists of an electric motor, a slurry pump, and a manifold. The output end of the electric motor is connected to the slurry pump, and the output end of the slurry pump is connected to the test sample tube through a pipeline. The outlet of the test sample tube is fixed to the manifold.

[0007] Preferably, the material-water separation system consists of a vibrating screen and a water tank. The input end of the slurry pump is connected to the water tank through a pipeline. A vibrating screen is fixed at one end of the top of the water tank. The vibrating screen is placed obliquely above the water tank. One end of the manifold is located directly above the vibrating screen.

[0008] Preferably, the feeding system consists of a hopper and a feeder. The feeder is connected to the top of the pipeline between the slurry pump and the water tank. The feeder has a hopper at its input end, and the hopper is vertically aligned with the bottom of the vibrating screen.

[0009] Preferably, the loading system is a six-degree-of-freedom dynamic loading device.

[0010] Preferably, the measurement system consists of a concentration meter, a flow meter, and a strain gauge assembly. The strain gauge assembly is installed on the outside of the test sample tube. A flow meter is connected in the middle of the pipeline between the slurry pump and the test sample tube. A concentration meter is connected in the middle of the pipeline between the slurry pump and the feeder.

[0011] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0012] At the same time, through the above technical solutions, this utility model has at least the following beneficial effects:

[0013] This invention, through the structural design of the test sample tube, pumping system, material-water separation system, feeding system, loading system, and measurement system, enables the device to not only reproduce the external dynamic load and changes in slurry concentration inside the mining riser, but also to monitor the changes in riser stress during the wear process. This provides support for riser wall thickness design and service life assessment, and is beneficial to its use. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] The attached diagram lists the components represented by each number as follows:

[0017] In the diagram: 1. Test sample tube; 2. Pumping system; 2a. Electric motor; 2b. Slurry pump; 2c. Manifold; 3. Material-water separation system; 3a. Vibrating screen; 3b. Water tank; 4. Feeding system; 4a. Hopper; 4b. Feeder; 5. Loading system; 6. Measuring system; 6a. Concentration meter; 6b. Flow meter; 6c. Strain gauge assembly. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Example

[0020] Reference Figure 1 A test device for the wear resistance of the inner wall of a mining riser includes a test sample pipe 1, a pumping system 2, a material-water separation system 3, a feeding system 4, a loading system 5, and a measurement system 6. The test sample pipe 1 is made of the same material as the actual mining riser, and the pipe length and inner and outer diameters are consistent with those of a single actual riser to ensure the authenticity of the test.

[0021] The pumping system 2 includes an electric motor 2a, a slurry pump 2b, and a manifold 2c. The slurry pump is driven by the electric motor and connected to the entire loop through the manifold to simulate the continuous transport process inside the riser.

[0022] The material-water separation system 3 includes a vibrating screen 3a and a water tank 3b. The vibrating screen 3a is placed at an angle above the water tank 3b. Its function is to separate the solid and liquid components of the slurry after the scouring test. The ore particles enter the hopper 4a along the screen surface, while the separated water flows back to the water tank 3b.

[0023] The feeding system 4 includes a hopper 4a and a feeder 4b. It is used to add ore into the circulating water system with reference to the feeding patterns in offshore mining operations, thereby forming a test slurry in the system with a concentration change pattern similar to that in actual operations.

[0024] The loading system 5 is a six-degree-of-freedom dynamic loading device used to simulate the dynamic tension and bending moment applied to the outside of the mining riser. It is implemented using the existing six-degree-of-freedom Stewart motion simulation platform.

[0025] The measurement system 6 includes a concentration meter 6a, a flow meter 6b, and a strain gauge assembly 6c. The concentration meter 6a and flow meter 6b are used to monitor the concentration and flow rate parameters of the slurry inside the pipe in real time, ensuring that the test parameters match the actual operating conditions. The strain gauge assembly 6c is used to monitor the surface strain of the riser, and, combined with the elastic modulus, calculate the change in riser stress over wear time, thereby obtaining the time required to reach the allowable stress (i.e., the wear-resistant service life).

[0026] In summary:

[0027] This utility model addresses the technical problem that existing wear testing devices cannot reproduce the external dynamic load and changes in slurry concentration inside the mine riser, nor can they monitor the changes in riser stress during the wear process. By adopting the technical solution of the above embodiments and through the aforementioned settings, this application can certainly solve the above-mentioned technical problems and achieve the following technical effects:

[0028] This utility model, through the structural design of the test sample tube 1, pumping system 2, material-water separation system 3, feeding system 4, loading system 5, and measurement system 6, enables the device to not only reproduce the external dynamic load and changes in slurry concentration inside the mining riser, but also to monitor the changes in riser stress during the wear process, providing support for riser wall thickness design and service life assessment, and facilitating its use.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A test device for the wear resistance of the inner wall of a mining riser, characterized in that, The test sample tube (1) includes a pumping system (2), a material-water separation system (3), a feeding system (4), a loading system (5), and a measuring system (6). The bottom and one side of the test sample tube (1) are equipped with the pumping system (2). The one side of the pumping system (2) is equipped with the material-water separation system (3). The feeding system (4) is installed between the material-water separation system (3) and the pumping system (2). The measuring system (6) is installed between the feeding system (4) and the test sample tube (1). The loading system (5) is fixed to the top of the test sample tube (1).

2. The test device for the wear resistance of the inner wall of a mining riser according to claim 1, characterized in that, The pumping system (2) consists of an electric motor (2a), a slurry pump (2b) and a manifold (2c). The output end of the electric motor (2a) is connected to the slurry pump (2b), and the output end of the slurry pump (2b) is connected to the test sample tube (1) through a pipeline. The outlet of the test sample tube (1) is fixed to the manifold (2c).

3. The test device for the wear resistance of the inner wall of a mining riser according to claim 2, characterized in that, The material-water separation system (3) consists of a vibrating screen (3a) and a water tank (3b). The input end of the slurry pump (2b) is connected to the water tank (3b) through a pipeline. The vibrating screen (3a) is fixed at one end of the top of the water tank (3b). The vibrating screen (3a) is placed obliquely above the water tank (3b). One end of the manifold (2c) is located directly above the vibrating screen (3a).

4. The test device for the wear resistance of the inner wall of a mining riser according to claim 3, characterized in that, The feeding system (4) consists of a hopper (4a) and a feeder (4b). The top of the pipeline between the slurry pump (2b) and the water tank (3b) is connected to the feeder (4b). The input end of the feeder (4b) is equipped with a hopper (4a). The hopper (4a) is vertically aligned with the bottom of the vibrating screen (3a).

5. The test device for the wear resistance of the inner wall of a mining riser according to claim 1, characterized in that, The loading system (5) is a six-degree-of-freedom dynamic loading device.

6. The test device for the wear resistance of the inner wall of a mining riser according to claim 4, characterized in that, The measurement system (6) consists of a concentration meter (6a), a flow meter (6b) and a strain gauge group (6c). The strain gauge group (6c) is installed on the outside of the test sample tube (1). A flow meter (6b) is connected in the middle of the pipeline between the slurry pump (2b) and the test sample tube (1). A concentration meter (6a) is connected in the middle of the pipeline between the slurry pump (2b) and the feeder (4b).

Images