Embedded ceramic wear-resistant petal skin bowl

Abstract

The utility model discloses an embedded ceramic wear -resisting structure petal skin bowl, concretely relates to a pipe pig, including petal skin bowl body, its outside movablely be provided with a plurality of close bowl mouth and be in the circular array distribution's compound bead, and the inside of bowl mouth is provided with a plurality of the circular array distribution's deformation groove, the inside bottom of deformation groove is the inner fillet face R, and the edge is the outer fillet face r, and r is less than or equal to 1 / 2R. The petal skin bowl in the utility model makes the bowl mouth closely adhere to the pipe wall through the elastic deformation of deformation groove, and the sliding friction is converted to the rolling friction with the help of compound bead, thereby significantly reducing the abrasion and operating resistance.

Description

Technical Field

[0001] This utility model relates to a pipeline cleaning device, specifically to an embedded ceramic wear-resistant structure petal-shaped leather cup. Background Technology

[0002] Scale buildup and impurities on the inner walls of oil and gas pipelines can lead to reduced transport efficiency, increased energy consumption, and potential pipeline blockages, resulting in significant economic losses and environmental risks. Therefore, regularly implementing efficient pipeline cleaning operations is a core measure to ensure safe pipeline operation and reduce transport costs. The performance of the pipeline cleaning tool directly determines the cleaning effect, with its throughput, wear resistance, and scale removal capabilities being key to solving the aforementioned technical problems.

[0003] Currently, there are various types of pipeline pigs on the market, with the most widely used being the cup-type pipeline pig. Its specific structure can be found in Chinese Patent CN107030072A (publication date 2017-08-11), which describes a deformation-resistant cup-type pipeline pig.

[0004] Existing technologies have the following shortcomings: the passability of oil and gas pipeline pigging cups depends on the deformation capacity of the cup, while its wear resistance and descaling ability are closely related to the cup's structure and material, and its service life is directly affected by the cup's wear resistance. Currently, mainstream products use a single polyurethane material for their cups, and the cross-sectional design only considers the overall backward tilt of the contact surface to improve deformation capacity, resulting in limited actual deformation capacity. To enhance wear resistance, some products have composite beads evenly arranged around the outer circumference of the polyurethane cup and fixed with bolts.

[0005] However, polyurethane, as a non-metallic material, has limited wear resistance. Pipeline cleaning operations require a certain positive pressure between the embossor cup and the pipe wall to ensure effective cleaning. This pressure is directly proportional to the operating friction force; increased friction force further exacerbates wear. Therefore, the design of the embossor cup structure requires balancing multiple performance aspects, often making it difficult to simultaneously achieve ideal wear resistance, deformation resistance, and cleaning ability.

[0006] Based on the above problems, the wear resistance can be improved by adding universal composite wear-resistant balls, but there are still three major drawbacks: First, the ball installation process is complex and costly; second, impurities in the pipeline can easily cause the balls to get stuck, resulting in insufficient functional reliability; and third, sparks may be generated when the steel balls rub against the pipe wall, posing a safety hazard. Utility Model Content

[0007] The purpose of this invention is to provide an embedded ceramic wear-resistant petal-shaped leather bowl to solve the above-mentioned problems.

[0008] To achieve the above objectives, this utility model provides the following technical solution: An embedded ceramic wear-resistant structure petal-shaped leather bowl includes a petal-shaped leather bowl body, on the outer side of which multiple composite beads are movably arranged near the rim of the bowl and distributed in a circumferential array. The inner side of the bowl has multiple deformable grooves arranged in a circular array. The bottom of the inner side of the deformable groove is an inner rounded corner surface R, while the edge is an outer rounded corner surface r, and r ≤ 1 / 2R.

[0009] Preferably, the inner side of the bowl opening is a rounded inner bowl opening surface, and the deformation grooves are distributed on the rounded inner bowl opening surface, and the cross-section of the bowl opening is thin-bladed.

[0010] Preferably, the cross-section of the deformation groove is an isosceles trapezoidal structure.

[0011] Preferably, the composite beads are ceramic balls.

[0012] Preferably, the number of deformation grooves is M, and M = 2N+1, where N > 2, N is a positive integer, and M is an odd number.

[0013] Preferably, each of the deformation grooves is distributed at the center of the straight-line distance between the two composite beads.

[0014] Preferably, the exposed area of ​​the composite bead on the outer side of the petal-shaped bowl body accounts for 5%-15% of the total outer spherical surface area.

[0015] Preferably, small composite beads are movably disposed on the outer surface of the flap cup body, the small composite beads being distributed at the center of the straight-line distance between two composite beads, and the two being on the same horizontal plane; The diameter of the small composite bead is X, and the diameter of the composite bead is Y, where 1 / 3Y≤X≤2 / 3Y.

[0016] As a preferred embodiment, the tube frame is also included, on which an upper mounting platform and a lower mounting platform are symmetrically welded. It also includes two leather cup assemblies, which are inserted from both ends of the tube frame and respectively abut against the outer walls of the upper and lower mounting platforms on opposite sides, and are fixed by through-hole fixing bolts.

[0017] Preferably, the leather cup assembly consists of two nested leather cup bodies, with gaskets distributed on the mating surfaces between them; The composite beads on the petal-shaped leather bowl body are misaligned.

[0018] In the above technical solution, the embedded ceramic wear-resistant petal-shaped leather bowl provided by this utility model has the following beneficial effects: When the petal-shaped leather bowl body is inserted into the pipe to be cleaned, the deformation groove serves as the main deformation area, causing the distance between the outer rounded corner surfaces r on both sides to gradually decrease, thereby generating the required elastic deformation force. This deformation force acts in the opposite direction on the petal-shaped leather bowl body, pushing its outer side near the bowl opening to fit tightly against the inner wall of the pipe, effectively avoiding the problem of wrinkles easily occurring at the bowl opening of traditional leather bowls, resulting in incomplete fitting.

[0019] Subsequently, with the outer surface of the petal-shaped cup forming a stable fit with the pipe wall, the composite bead also comes into contact with the inner wall of the pipe, establishing a rolling connection. This significantly reduces frictional resistance, improves smooth movement, and effectively overcomes the drawbacks of pure sliding friction, such as high wear and easy jamming. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 A schematic diagram of the structure of the petal-shaped leather bowl body according to the first embodiment of this utility model; Figure 3 A schematic diagram of a convex cross-sectional structure provided for an embodiment of this utility model; Figure 4 A schematic diagram of the cross-sectional structure of the deformation groove provided in an embodiment of this utility model; Figure 5 A schematic diagram of the scanning removal path for the deformable groove provided in an embodiment of this utility model; Figure 6 A schematic diagram of the structure of the petal-shaped leather bowl body according to the second embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Petal-shaped leather cup body; 2. Composite bead; 3. Deformation groove; 4. Small composite bead; 100. Tube skeleton; 101. Fixing bolt; 102. Washer ring. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-6 As shown, an embedded ceramic wear-resistant structure petal-shaped leather bowl includes a petal-shaped leather bowl body 1, on the outer side of which multiple composite beads 2 are movably arranged near the rim of the bowl and distributed in a circumferential array. The inner side of the bowl is provided with multiple deformable grooves 3 arranged in a circular array. The bottom of the inner side of the deformable groove 3 is an inner rounded corner surface R, while the edge is an outer rounded corner surface r, and r ≤ 1 / 2R.

[0025] Specifically, the aforementioned composite bead 2 can be made of non-metallic materials, such as polyethylene plastic beads, composite polyethylene plastic beads, glass beads, etc.

[0026] The cross-section of the deformation groove 3 can be any shape, such as V-shaped, U-shaped, or inverted Ω-shaped.

[0027] Secondly, the skirt of the cup (i.e., the rim of the petal-shaped cup body 1) is subject to radial compression from the pipe wall due to its interference fit design. The deformation groove 3 provides a pre-set space for the elastic deformation of the polyurethane material, allowing it to undergo larger and more orderly deformation. This not only significantly reduces the resistance when passing through complex pipe sections such as elbows and reducers, but also fundamentally avoids the risk of cup overturning, tearing, or pigging jamming caused by stress concentration. Furthermore, under the same interference fit conditions, the actual contact area between the skirt and the pipe to be cleaned is more optimized in the cup with the deformation groove 3, effectively avoiding the problem of excessive local stress. According to the tribological principle, wear is positively correlated with normal pressure. Therefore, the structure of the deformation groove 3, by reducing and homogenizing the contact normal pressure between the skirt and the pipe wall, can significantly reduce frictional loss, thereby increasing the wear life of the petal-shaped cup body 1 by more than 30%.

[0028] Furthermore, when the petal-shaped cup body 1 is inserted into the pipe to be cleaned, the overall structure of the petal-shaped cup body 1, after the pipe to be cleaned is circumferentially compressed, takes into account pre-compression deformation, with the composite beads 2 contacting the pipe wall, thereby achieving wear resistance; and in conjunction with the deformation capability of the deformation groove 3, the petal-shaped cup body 1 ensures the sealing between the skirt and the pipe to be cleaned. Thus, the overall wear resistance and pipe cleaning capability are improved.

[0029] Furthermore, both the inner and outer edges of the deformable groove 3 are designed with rounded corners, wherein the inner corner radius is R, the edge corner radius is r, and r ≤ 1 / 2R. Figure 4 The rounded corner structure achieves a smooth geometric transition, effectively suppressing stress concentration and preventing fatigue failure caused by excessive local stress. By optimizing stress distribution, this design enables the surrounding structure to deform in a coordinated manner and provide uniform support when subjected to complex loads, thereby significantly improving the overall deformation capacity and cleaning performance of the petal-shaped cup body 1. The specific values ​​of R and r can be finely matched according to actual working conditions to meet different engineering requirements.

[0030] In a specific embodiment, the pig consists of a pipe skeleton 100 and a cup assembly mounted on the pipe skeleton 100. Details are as follows... Figure 1 As shown: The pipe frame 100 is symmetrically welded with an upper mounting platform and a lower mounting platform; The number of leather cup assemblies is two, which are inserted into the two ends of the tube frame 100 and respectively abut against the outer wall of the upper and lower mounting platforms on opposite sides, and are fixed by the through fixing bolts 101; The leather cup assembly consists of two petal-shaped leather cup bodies 1 nested together, with gaskets 102 distributed on the mating surfaces between them.

[0031] It is important to note that the composite beads 2 on the multiple petal-shaped leather cup bodies 1 are staggered. That is, viewed from one end of the tube frame 100, the composite beads 2 on the multiple petal-shaped leather cup bodies 1 are equidistantly distributed in a circular pattern. This staggered design allows the loads (contact stress and deformation stress) to be more evenly distributed in the circumferential direction, avoiding stress superposition. This enables the deformation capacity and wear-resistant cleaning ability of the petal-shaped leather cup bodies 1 to be fully utilized in different parts, synergistically improving overall performance.

[0032] As a further embodiment of this utility model, the inner side of the mouth of the petal-shaped leather bowl body 1 is a rounded inner mouth surface, while the deformation groove 3 is distributed on the rounded inner mouth surface, and the cross-section of the mouth is thin-bladed.

[0033] Specifically, the area of ​​the petal-shaped leather bowl body 1, where the inner rim is rounded, constitutes its skirt structure. In this embodiment, by adopting a thin-bladed bowl design, the deformation groove 3 is more likely to deform after the petal-shaped leather bowl body 1 is inserted into the pipe to be cleaned. This deformation allows the thin-bladed bowl to conform to the changes in the groove, thereby more effectively fitting the inner wall of the pipe to be cleaned.

[0034] As a further preferred embodiment provided by this utility model, such as Figure 4 As shown, the cross-section of the deformation groove 3 in this example is an isosceles trapezoidal structure.

[0035] Specifically, in combination Figure 3 As shown, the isosceles trapezoidal cross-section provides ample deformation-accommodating space for the polyurethane skirt material through the width of its lower base, while retaining sufficient material cross-section thanks to the width of its upper base, ensuring continuous support strength. Therefore, the skirt can maintain good support force and provide the required normal compressive force while achieving sufficient deformation capacity.

[0036] Secondly, the deformation grooves 3 are distributed along the outer surface of the petal-shaped leather bowl body 1. The distribution of their number and the design of the scanning path of the deformation grooves 3 result in the following specific ratio of the force requirements of the petal-shaped leather bowl body 1: In areas where primary support functions are required, the polyurethane structure is thick and wide, resulting in less material removal during scanning. Figure 5 (as shown) In the wear-resistant functional area (where composite bead 2 is located), the polyurethane thickness is moderate, and the material removal amount is correspondingly moderate. Figure 3 (as shown) In the skirt sealing area, a thin and lightweight structure is required to ensure a smooth seal, thus requiring the removal of a significant amount of material. Figure 3 (As shown).

[0037] This path extends from the normal working surface of the cup to the extreme deformation position, ensuring that the deformation groove can effectively guide deformation even under extreme working conditions, maintaining the integrity and reliability of the structure.

[0038] As a further preferred embodiment of this utility model, the composite bead 2 is a ceramic ball bearing, and based on the process, optimally, the composite bead 2 and the petal-shaped leather bowl body 1 are integrally formed, i.e., fixedly connected, as detailed below:

[0039] The petal-shaped leather bowl body 1 is manufactured using a one-time casting and molding process, the detailed steps of which are as follows: Ceramic ball pretreatment: Zirconia (ZrO2) ceramic balls are selected and treated with acid washing and silane coupling agent to enhance the bonding force with polyurethane; Mold fixing: Fix the ceramic beads to the mold cavity through the positioning and fixing groove, ensuring that the exposed height is 5%-15%; Casting vulcanization: After vacuum degassing of the polyurethane mixture, it is injected into a mold at 100-110℃ and vulcanized for 60-90 minutes under specific conditions; Post-curing and finishing: After demolding, post-cur in a 100℃ oven for 4-8 hours, trim the flash and check the dimensions and bond strength.

[0040] As a further embodiment of this utility model, the number of deformation grooves 3 is M, and M = 2N+1, where N>2, N is a positive integer, and M is an odd number. Each deformation groove 3 is distributed at the center of the straight-line distance between two composite beads 2.

[0041] Specifically, when there are localized protrusions or strong impurities on the inner wall of the pipe, a single point on the petal-shaped cup body 1 will bear the impact load. In the asymmetrical structure with an odd number of grooves, the impact force cannot be directly transmitted through the symmetrical point in the diameter direction, but is forced to be redistributed and dispersed across multiple adjacent structural units, thus significantly reducing the peak stress. Secondly, this design also avoids the formation of repeated high-stress concentration zones at the symmetrical point, significantly reducing the accumulation rate of material fatigue damage, thereby enhancing the long-term durability of the petal-shaped cup body 1 under alternating loads.

[0042] It should be noted that if an even-number symmetrical distribution is used, the impact force will be directly transmitted to the symmetrical point, resulting in a high stress concentration in that area, which greatly increases the risk of tearing or premature failure.

[0043] As another embodiment of this utility model, the exposed area of ​​the composite bead 2 on the outside of the petal-shaped leather bowl body 1 accounts for 5%-15% of the total outer spherical surface area.

[0044] Specifically, an embedded depth exceeding 85% ensures sufficient anchoring force, preventing the ceramic beads from detaching under complex loads. The 5%-15% exposed height ensures that the contact point between the ceramic bead and the pipe wall is extremely small; even if some wear occurs, it remains a very small contact area, still meeting high wear resistance requirements. Therefore, the design proportions provided in this embodiment offer ideal constraint and rolling space for the ceramic beads in extreme environments, ensuring their structural stability.

[0045] As another embodiment further provided by this utility model, such as Figure 6 The outer surface of the flap cup body 1 is movably provided with small composite beads 4, which are distributed at the center of the straight-line distance between two composite beads 2, and the two are on the same horizontal plane. The diameter of the small composite beads 4 is X, and the diameter of the composite beads 2 is Y, and 1 / 3Y≤X≤2 / 3Y.

[0046] Specifically, the non-deformation groove area is the main support and stress area of ​​the valve cup body 1. Arranging larger diameter composite beads 2 in this area can provide stronger load-bearing capacity and wear resistance, effectively resisting continuous friction and wear. In the deformation groove area where deformation is concentrated, arranging small composite beads 4 can provide sufficient wear resistance while minimizing the restriction on the flexibility and deformation capacity of the valve cup, ensuring the deformation and wear resistance of the pig.

[0047] Composite bead 2 bears the main wear in the stable area, while small composite bead 4 assists in wear resistance and adapts to deformation in the deformation area. This "distinct primary and secondary" layout makes the overall stress distribution more reasonable, avoids stress concentration caused by uneven rigidity, and improves the overall fatigue life and reliability of the component.

[0048] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An embedded ceramic wear-resistant structure petal-shaped leather bowl, characterized in that, The body of the petal-shaped leather bowl (1) has multiple composite beads (2) arranged in a circular array near the mouth of the bowl on its outer side. The inner side of the bowl is provided with multiple deformable grooves (3) arranged in a circular array. The bottom of the inner side of the deformable groove (3) is an inner rounded corner surface R, and the edge is an outer rounded corner surface r, and r ≤ 1 / 2R.

2. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 1, characterized in that, The inner side of the bowl opening is the inner bowl opening rounded corner surface, and the deformation groove (3) is distributed on the inner bowl opening rounded corner surface, and the cross section of the bowl opening is thin blade-shaped.

3. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 1, characterized in that, The cross-section of the deformation groove (3) is an isosceles trapezoidal structure.

4. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 1, characterized in that, The composite bead (2) is a ceramic ball bearing.

5. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 1, characterized in that, The number of the deformation grooves (3) is M, and M = 2N+1, where N>2, N is a positive integer, and M is an odd number.

6. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 1, characterized in that, Each of the deformation grooves (3) is distributed at the center of the straight-line distance between the two composite beads (2).

7. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 1, characterized in that, The exposed area of ​​the composite bead (2) on the outside of the petal-shaped leather bowl body (1) accounts for 5% to 15% of the outer spherical surface area.

8. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 6, characterized in that, Small composite beads (4) are movably arranged on the outer side of the flap bowl body (1). The small composite beads (4) are distributed at the center of the straight-line distance between the two composite beads (2), and the two are on the same horizontal plane. The diameter of the small composite bead (4) is X, and the diameter of the composite bead (2) is Y, and 1 / 3Y≤X≤2 / 3Y.

9. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 1, characterized in that, It also includes a pipe frame (100), on which an upper mounting platform and a lower mounting platform are symmetrically welded; It also includes two leather cup assemblies, which are inserted into the tube frame (100) at both ends and respectively abut against the outer wall of the upper and lower mounting platforms on opposite sides, and are fixed by through-hole fixing bolts (101).

10. The embedded ceramic wear-resistant structure petal-shaped leather bowl according to claim 9, characterized in that, The leather cup assembly is composed of two petal-shaped leather cup bodies (1) nested together, and the mating surfaces between the two are provided with gaskets (102). The composite beads (2) on the petal-shaped leather bowl body (1) are misaligned.

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