Ultrahigh-pressure water cutting composite material winding sand mixing tank based on lightweight structure

Abstract

The invention relates to the technical field of ultrahigh-pressure water cutting, and discloses an ultrahigh-pressure water cutting composite material winding sand mixing tank based on a lightweight structure, which comprises a metal cylinder body, and the metal cylinder body is the core part of the whole structure and is used for assembling and connecting other structural members; the two elliptical sealing heads are positioned at the upper end and the lower end of the metal cylinder and are used for sealing the whole structure; the reinforcing layer is positioned on the periphery of the metal cylinder and outside the two elliptical heads and is used for reinforcing the overall structural strength; and the protective layer is located outside the reinforcing layer and the two elliptical sealing heads and used for protecting the whole structure. According to the ultrahigh-pressure water cutting sand mixing tank, the transition section where the elliptical head is connected with the metal cylinder adopts a fillet transition form, stress concentration is reduced, the mechanical property is optimized, the overall safety and reliability of the ultrahigh-pressure water cutting sand mixing tank are improved, the metal cylinder made of high-strength alloy steel is selected, the impact resistance and fatigue resistance of the overall material are cooperatively improved, and the pressure bearing capacity is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of ultra-high pressure water cutting, in particular to an ultra-high pressure water cutting composite material winding sand mixing tank based on a lightweight structure. Background Art

[0002] Ultra-high pressure water jet cutting technology is a technology that relies on high-speed water flow to cut materials under extremely high water pressure. It uses water as a cutting medium and sprays it onto the surface of the material to achieve the purpose of cutting or cleaning. Sand mixing technology is mainly used to evenly mix abrasives (such as sand, corundum, etc.) in the water jet cutting system with water flow to enhance the cutting ability of the water flow. Through sand mixing technology, the mixture of water flow and abrasive can effectively improve the efficiency of cutting hard materials, and is widely used in metal processing, stone cutting, concrete cutting, building demolition and other industries.

[0003] There are mainly the following three problems in the prior art:

[0004] First, traditional water jet sand mixing tanks are usually made of steel or stainless steel, and their forming process mainly relies on welding. However, the welding process has a significant impact on the mechanical properties and overall structural stability of the high-pressure vessel. During the welding process, due to the high temperature, the material in the weld area will undergo changes in structure and properties, forming a heat-affected zone (HAZ). This heat-affected zone will cause the strength and toughness of the local material to decrease, thereby affecting the pressure-bearing capacity of the entire container. In addition, the instability of the welding process causes welding defects, which further affects the sealing and corrosion resistance of the high-pressure vessel.

[0005] Second, traditional water jet sand mixing tanks are widely made of metal materials (such as steel and stainless steel). Although these materials have good mechanical properties, their high density makes the overall weight of the sand mixing tank heavier. This not only increases the difficulty of transportation and installation, but also increases the difficulty of operation when using and disassembling the equipment. The heavier container weight will cause cost and operational inconvenience for equipment that needs to be frequently moved and installed, especially in some environments with space or transportation restrictions.

[0006] Third: In traditional waterjet sand mixing tanks, cylindrical heads are widely used, but this design is mainly suitable for containers in the low to medium pressure range. Due to its flat shape, the cylindrical head is prone to stress concentration under high pressure environment, causing the stress in the local area to exceed the design range, thereby causing material deformation or structural failure. Under high-pressure working conditions, this stress concentration has an adverse effect on the safety of the container, thereby reducing its pressure bearing capacity and service life. Therefore, the present invention provides an ultra-high pressure waterjet composite material winding sand mixing tank based on a lightweight structure to address the shortcomings of the prior art. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides an ultra-high pressure water cutting composite material wrapped sand mixing tank based on a lightweight structure, which solves the problems of the ultra-high pressure water cutting sand mixing tank in the prior art having a complex structure, poor stability, poor pressure bearing capacity, and an overall heavy weight resulting in high transportation costs.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: an ultra-high pressure water jet composite winding sand mixing tank based on a lightweight structure, comprising a metal cylinder, which is the core part of the overall structure and is used to assemble and connect other structural parts;

[0009] Two elliptical heads, which are located at the upper and lower ends of the metal cylinder and are used to close the overall structure;

[0010] A reinforcement layer, which is located on the outer periphery of the metal cylinder and the outside of the two elliptical heads and is used to enhance the overall structural strength;

[0011] The protective layer is located outside the reinforcement layer and the two elliptical heads and is used for protecting the overall structure.

[0012] Preferably, the elliptical head is welded to the outside of the metal cylinder, the material of the reinforcement layer is T300 carbon fiber, and the material of the protective layer is 7626 glass fiber.

[0013] A method for manufacturing an ultra-high pressure water jet composite winding sand mixing tank based on a lightweight structure, comprising the following steps:

[0014] Step 1: Clean the metal cylinder;

[0015] Step 2: Pre-treat the surface of the cleaned metal cylinder;

[0016] Step 3: Lay the reinforcement layer on the outside of the metal cylinder;

[0017] Step 4: Cover the outer surface of the integral sand mixing tank with a protective layer.

[0018] Preferably, in the step 1, oil stains and oxide layer are removed by mechanical and chemical methods to expose the pure metal cylinder.

[0019] Preferably, in the step 2, the metal cylinder is polished by using coarse sandpaper to achieve a desired roughness, thereby providing a suitable bonding interface for the winding of the carbon fiber.

[0020] Preferably, in step three, grid theory and genetic algorithm are used to optimize the layup scheme of the composite material. Grid theory can analyze the relationship between the fiber direction and performance of each layer by establishing a structural model of the material; genetic algorithm simulates the natural selection process to find the optimal layup thickness, layup angle and fiber arrangement in a complex multi-objective optimization space.

[0021] Preferably, after the plying scheme is optimized in step three, the plying structure is adjusted using a modified cubic spline function, and then a high-precision winding machine is used to perform winding processing on the metal cylinder of the sand mixing tank.

[0022] The present invention provides an ultra-high pressure water jet composite winding sand mixing tank based on a lightweight structure. It has the following beneficial effects:

[0023] 1. The present invention adopts a rounded transition form in the transition section connecting the elliptical head and the metal cylinder, which reduces stress concentration, optimizes mechanical properties, and improves the overall safety and reliability of the ultra-high pressure water jet sand mixing tank; at the same time, the metal cylinder made of high-strength alloy steel can not only ensure the structural integrity and durability under extreme working conditions, but also provide strong support for the subsequent composite material winding, synergistically improve the impact resistance and fatigue performance of the overall material, and effectively improve the pressure bearing capacity.

[0024] 2. The present invention ensures the accuracy and efficiency of manufacturing by using precision processing steps such as stamping, bending and welding in the manufacturing process of the metal cylinder, combining a fine pretreatment process including cleaning, rust removal, surface pretreatment, etc., and optimizing the composite material ply design using grid theory and genetic algorithm, and then using a high-precision winding machine for winding processing. Suitable materials such as T300 carbon fiber and 7626 glass fiber are selected to reduce costs while meeting performance requirements, achieve simple structure and simple manufacturing, and reduce the quality of the sand mixing tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 It is a schematic diagram of the metal cylinder structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the reinforcement layer of the present invention;

[0028] Figure 4 This is a fiber layup design table for the present invention.

[0029] Among them, 1. Metal cylinder; 2. Elliptical head; 3. Reinforcement layer; 4. Protective layer. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1:

[0032] Please see attached Figure 1 -Attached Figure 4 The embodiment of the present invention provides an ultra-high pressure water jet composite winding mixing tank based on a lightweight structure, comprising a metal cylinder 1, which is the core part of the overall structure and is used to assemble and connect other structural parts; two elliptical heads 2, which are located at the upper and lower ends of the metal cylinder 1 and are used to close the overall structure; a reinforcement layer 3, which is located at the outer periphery of the metal cylinder 1 and the outside of the two elliptical heads 2 and is used to enhance the overall structural strength; a protective layer 4, which is located outside the reinforcement layer 3 and the two elliptical heads 2 and is used to protect the overall structure, the elliptical heads 2 are welded to the outside of the metal cylinder 1, the material of the reinforcement layer 3 is T300 carbon fiber, and the material of the protective layer 4 is 7626 glass fiber.

[0033] Embodiment 2:

[0034] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a manufacturing method of an ultra-high pressure water jet composite winding sand mixing tank based on a lightweight structure, comprising the following steps: step 1, cleaning the metal cylinder 1; step 2, surface pretreatment of the cleaned metal cylinder 1; step 3, laying a reinforcement layer 3 on the outside of the metal cylinder 1; step 4, covering the outer surface of the overall sand mixing tank with a protective layer 4, in step 1, mechanical and chemical methods are used to remove oil stains and oxide layers to expose the pure metal cylinder 1, and in step 2, the metal cylinder 1 is polished with coarse sandpaper to achieve the desired effect. The required roughness is achieved, thereby providing a suitable bonding interface for the winding of carbon fiber. In step three, grid theory and genetic algorithm are used to optimize the plying scheme of the composite material. Grid theory can analyze the relationship between the fiber direction and performance of each layer by establishing a structural model of the material; genetic algorithm simulates the natural selection process to find the optimal ply thickness, ply angle and fiber arrangement in a complex multi-objective optimization space. After the plying scheme is optimized in step three, the modified cubic spline function is used to adjust the ply structure, and then a high-precision winding machine is used to perform winding processing on the metal cylinder 1 of the sand mixing tank.

[0035] Specifically, the metal cylinder 1 is made of high-strength alloy steel to ensure structural integrity and durability under extreme working conditions. In terms of molding technology, the manufacturing process of the metal cylinder 1 includes precision processing steps such as stamping, bending and welding. In order to minimize stress concentration, the transition section design connecting the elliptical head 2 and the metal cylinder 1 adopts a rounded transition form. This design strategy not only optimizes the mechanical properties of the structure, but also improves the overall safety and reliability of the ultra-high pressure water jet sand mixing tank. In the manufacturing process of the metal cylinder 1, in order to ensure the efficiency and bonding strength of the subsequent carbon fiber winding process, a series of fine pretreatment steps must be carried out. First, the surface of the metal cylinder 1 is thoroughly cleaned to remove oil, oxide layer and other impurities. Subsequently, rust removal is carried out by mechanical and chemical methods to expose the pure metal matrix. On this basis, surface pretreatment is carried out to achieve the required roughness, thereby providing a suitable bonding interface for the winding of carbon fibers. According to the application environment and performance requirements, it is first necessary to select a suitable resin matrix and fiber material to ensure that the composite material has the required mechanical properties and environmental resistance. T300 carbon fiber is selected as the material of the reinforcement layer 3 because it has high specific strength and specific stiffness, and can still maintain good mechanical properties at high temperatures, which is suitable for structures requiring high strength and rigidity. As for the protective layer 4, the glass fiber material is 7626 type, which has good impact resistance, corrosion resistance and low cost, and can effectively improve the overall durability and environmental adaptability of the composite material. In terms of ply design, grid theory and genetic algorithm are used to optimize the ply scheme of the composite material, aiming to maximize the utilization of various material properties. Grid theory can analyze the relationship between the fiber direction and performance of each layer by establishing a structural model of the material; while the genetic algorithm simulates the natural selection process and finds the optimal ply thickness, ply angle and fiber arrangement in a complex multi-objective optimization space, thereby realizing the precise control and improvement of the structural performance of the composite material. Then, the modified cubic spline function is used to adjust the ply structure, especially the variable angle and variable thickness design of the elliptical head 2 part, so as to optimize the stress distribution and deformation performance of the composite material under stress. Through this fine geometric design, the load-bearing capacity of the composite material can be effectively improved, local stress concentration can be reduced, and the stability and reliability of the overall structure can be further enhanced. Finally, a high-precision winding machine is used to perform winding processing on the metal cylinder 1 of the sand mixing tank. This process can ensure that the structure of the composite material has excellent mechanical properties when subjected to complex mechanical loads by accurately controlling the laying angle and number of layers of the fiber. The selection of the metal cylinder 1 can not only provide good mechanical support, but also form an effective synergy with the composite material, further improving the impact resistance and fatigue resistance of the overall material.

[0036] Working principle: In terms of forming technology, the manufacturing process of the metal cylinder 1 includes precision processing steps such as stamping, bending and welding. The transition section design connecting the elliptical head 2 and the metal cylinder 1 adopts a rounded transition form. In the manufacturing process of the metal cylinder 1, a series of fine pretreatment steps must be performed. First, the surface of the metal cylinder 1 is thoroughly cleaned to remove oil, oxide layer and other impurities. Subsequently, rust removal is carried out by mechanical and chemical methods to expose the pure metal matrix. On this basis, surface pretreatment is carried out to achieve the required roughness. T300 carbon fiber is selected as the material of the reinforcement layer 3, and the glass fiber material as the protective layer 4 is 7626. In terms of layer design, the grid theory and genetic algorithm are used to optimize the layering scheme of the composite material, and then the modified cubic spline function is used to adjust the layer structure. Through geometric design, the bearing capacity of the composite material can be effectively improved, the local stress concentration can be reduced, and the stability and reliability of the overall structure can be further enhanced. Finally, a high-precision winding machine is used to perform winding processing on the metal cylinder 1 of the sand mixing tank.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ultra-high pressure water jet composite winding sand mixing tank based on a lightweight structure, characterized in that: include: A metal cylinder (1), which is the core part of the overall structure and is used to assemble and connect other structural parts; Two elliptical sealing heads (2), the elliptical sealing heads (2) being located at the upper and lower ends of the metal cylinder (1) and being used to seal the overall structure; A reinforcement layer (3), the reinforcement layer (3) being located on the outer periphery of the metal cylinder (1) and outside the two elliptical heads (2) and being used to enhance the overall structural strength; A protective layer (4) is located outside the reinforcement layer (3) and the two elliptical heads (2) and is used to protect the overall structure.

2. The ultra-high pressure water jet composite winding sand mixing tank based on lightweight structure according to claim 1 is characterized in that: The elliptical seal head (2) is welded to the outside of the metal cylinder (1); the material of the reinforcement layer (3) is T300 carbon fiber; and the material of the protective layer (4) is 7626 type glass fiber.

3. A method for manufacturing an ultra-high pressure water jet composite winding sand mixing tank based on a lightweight structure, characterized in that: An ultra-high pressure water jet composite winding sand mixing tank based on a lightweight structure as described in any one of claims 1-2 comprises the following steps: Step 1: Cleaning the metal cylinder (1); Step 2: performing surface pretreatment on the cleaned metal cylinder (1); Step 3: Laying the reinforcement layer (3) on the outside of the metal cylinder (1); Step 4: Cover the outer surface of the integral sand mixing tank with a protective layer (4).

4. The method for manufacturing a lightweight structure ultra-high pressure water jet composite winding sand mixing tank according to claim 3, characterized in that: In the step 1, oil stains and oxide layers are removed by mechanical and chemical methods to expose the pure metal cylinder (1).

5. The method for manufacturing a lightweight structure ultra-high pressure water jet composite winding sand mixing tank according to claim 3, characterized in that: In the second step, the metal cylinder (1) is polished with coarse sandpaper to achieve the required roughness, thereby providing a suitable bonding interface for the winding of carbon fibers.

6. The method for manufacturing a lightweight structure ultra-high pressure water jet composite winding sand mixing tank according to claim 3, characterized in that: In the step three, grid theory and genetic algorithm are used to optimize the layup scheme of the composite material. The grid theory can analyze the relationship between the fiber direction and performance of each layer by establishing a structural model of the material; the genetic algorithm simulates the natural selection process to find the optimal layup thickness, layup angle and fiber arrangement in a complex multi-objective optimization space.

7. The method for manufacturing a lightweight structure ultra-high pressure water jet composite winding sand mixing tank according to claim 6, characterized in that: After the plying scheme is optimized in step three, the plying structure is adjusted using a modified cubic spline function, and then a high-precision winding machine is used to perform winding processing on the metal cylinder (1) of the sand mixing tank.

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