Detection device for simulating and detecting shot blasting quality of outer wall of drill rod joint

Abstract

The utility model discloses a detection device for simulating and detecting the shot blasting quality of the outer wall of a drill rod joint, which belongs to the field of machining quality detection and comprises a drill rod joint test piece, a sampling block and a fastener. The openings are respectively located at to-be-detected positions of a small-diameter end pipe orifice, a middle section and a circular bead outer wall of the conical external thread, the opening forms comprise a radial notch, an axial notch and a window structure, and the sampling blocks are of a combined structure, are detachably fixed in the openings through fasteners and are located in the same shot blasting environment as the outer surface of a drill rod joint test piece. The shot blasting quality can be conveniently and accurately simulated and detected. The material and the heat treatment process of the sampling block are consistent with those of the drill rod joint, the surface roughness, the size and the like meet the detection requirements, and the shot blasting effect can be truly reflected. The device can realize accurate quantitative detection for parts with complex shapes, obviously improves the detection precision and efficiency, reduces the detection cost, and is suitable for shot blasting quality detection of drill rod joints and other workpieces with complex shapes.

Description

TECHNICAL FIELD

[0001] The utility model relates to a technical scheme that belongs to the technical field of machining quality detection instrument, specifically, the utility model relates to a gauge for detecting the manufacturing quality of mechanical parts, in particular to a detection device for simulating detection of shot blasting quality of the outer wall of a drill rod joint. BACKGROUND

[0002] From the structure aspect, the oil drill rod belongs to a typical slender pipe, with a standard length of about 10 meters, and two ends connected with drill rod joints. The oil drilling process is progressive, and the target drilling depth usually reaches several kilometers, even more than ten thousand meters, so the matching oil drill rod must adopt the joint mode to reach the drilling depth. During the drilling stage, the oil drill rod not only needs to bear a large torque, but also needs to bear the cumulative weight formed by the string connection. Under this heavy load working condition, the rotating oil drill rod must have sufficient strength, especially the drill rod joints at both ends, which have higher strength requirements.

[0003] In order to meet the matching requirements of oil drilling engineering, the industry usually selects high-quality alloy structural steel to manufacture the oil drill rod, and assists with heat treatment process and surface shot blasting process to further improve the strength index. After the forming machining of the drill rod joint, the outer wall needs to be subjected to shot blasting process to significantly improve the structural strength and effectively reduce the thread sticking phenomenon. Therefore, the shot blasting process is an indispensable process for machining the drill rod joint.

[0004] As known to those skilled in the art of mechanical manufacturing, the main technical parameters of the shot blasting process include shot blasting particle size, speed and spraying angle. However, due to the irregular cylindrical structure of the outer wall of the drill rod joint, there are certain differences in the shot blasting impact force and shot blasting quality of each part of the joint under the same parameter conditions. Especially at the conical external thread section and the sealing shoulder, due to the irregularity of the outer surface, the effect of the shot blasting process is difficult to be uniform. This non-uniformity leads to a large difference in the strength values of each part. The existing detection methods are mostly focused on the strength detection of the relatively regular parts of the outer wall, and cannot comprehensively and objectively reflect the overall shot blasting quality of the drill rod joint.

[0005] The prior art patent CN116604474B discloses a drill rod joint thread surface treatment process, which includes steps of degreasing and oil removal, shot blasting treatment and shot blasting cleaning on the drill rod joint thread surface, and the shot blasting coverage rate reaches 100%, and the shot blasting strength range is 0.15mm·A~0.38mm·A. This technology can significantly improve the strength and wear resistance of the drill rod joint thread surface, and has the advantages of reducing pollution and reducing cost.

[0006] Although CN116604474B provides an effective method to improve the performance of the threaded surface, the technology does not provide a solution to the shot blasting quality detection problem of the complex part of the outer wall of the drill pipe joint, especially the uniformity and strength difference of shot blasting of irregular structures such as the conical external thread segment and the sealing shoulder cannot be effectively quantitatively analyzed. In addition, the detection method is mainly based on the empirical inference of the surface shot blasting coverage, and lacks more intuitive and accurate simulation detection means. This defect causes the technology to be unable to comprehensively guide or optimize the shot blasting process under complex working conditions. Therefore, the existing technology still has a large room for improvement in the field of simulation detection of the shot blasting quality of the outer wall of the drill pipe joint. Utility model content

[0007] The utility model mainly aims at the prior art implementation detection difficult, and there is detection precision difference and detection cost is big and difficult to quantitative evaluation and cannot cover complex structure part and so on problem, therefore puts forward a kind of detection device for simulating detection drill pipe joint outer wall shot blasting quality, device main structure is similar to the drill pipe joint to be detected, and preset detachable sampling block is detected at the point.Preset sampling block is removed after implementing shot blasting process and is detected quantitatively.

[0008] The utility model realizes technical target by the following technical scheme.

[0009] A kind of detection device for simulating detection drill pipe joint outer wall shot blasting quality, including drill pipe joint test piece, sampling block and fastener, the outer wall of the drill pipe joint test piece is equipped with multiple openings for installing sampling block, each opening corresponds a detection position, including the opening that is set at the small diameter end pipe orifice of the conical external thread of drill pipe joint test piece outer wall, and the opening that is opened at the middle segment of conical external thread and is radially through inner and outer wall, there is the opening that is opened on shoulder outer wall, the opening is the notch or window that is through drill pipe joint test piece inner and outer wall, and forms open structure in at least one direction;The sampling block is combined structure, the sampling block is detachably fixed in the opening by fastener, the outer surface of sampling block and drill pipe joint test piece is in the same shot blasting process environment, to simulate detection shot blasting quality.

[0010] As preferably, the opening of the drill pipe joint test piece includes radial notch and axial notch and alpha window and beta window, the radial notch and axial notch are set at the small diameter end pipe orifice of conical external thread and are rectangular structure, the radial notch and axial notch are used to position the installation position of sampling block, the alpha window is set at the middle segment of conical external thread and is rectangular structure, the beta window is set on shoulder outer wall and is rectangular structure, for the radial notch and axial notch of the sampling block.

[0011] As preferably, the radial notch, axial notch, alpha window and beta window built in the drill pipe joint test piece are arranged in four equal parts in the cross section, so as to realize the simulation detection of shot quality in multiple key positions of the drill pipe joint.

[0012] As preferably, the bottom edges of the alpha window and beta window built in the drill pipe joint test piece are arranged in an axial inclined manner, the inclination angle is equal to half of the thread angle of the drill pipe joint, and the inclination directions of the bottom edges of the alpha window and beta window are opposite, so as to correspond to the actual spraying angle of the shot process, and the bottom edges of the alpha window and beta window are designed in an inclined manner and the inclination angle is set according to the thread angle, so that the actual spraying angle in the shot process can be better simulated, the detection requirement of the complex structure outer wall can be adapted, the irregular outer wall structure can be adapted, and the problem that the shot effect of the irregular outer wall cannot be effectively analyzed by the traditional technology can be effectively solved.

[0013] As preferably, the bottom edges of the radial notch, axial notch, alpha window and beta window are provided with screw holes, and the sampling block in place is locked by cooperation of bolts and screw holes, so as to form a detachable simulation detection structure of the drill pipe joint test piece.

[0014] As preferably, the sampling block comprises a sample plate, a base and a fixing assembly, the base is in an I-shaped boss structure, and the sample plate is arranged on the upper end of the base and locked and fixed by the fixing assembly.

[0015] As preferably, the fastener is a bolt, and the fixing assembly is a screw.

[0016] As preferably, the sample plate is a long strip-shaped thin plate block, the thickness is 1.0-1.6 mm, the length is 15-20 mm, and the width is 3.0-5.0 mm.

[0017] As preferably, the sample plate is made of the same material as the drill pipe joint to be detected and is subjected to the same heat treatment, so that the simulation detection result can accurately reflect the shot process effect.

[0018] As preferably, the surface roughness of the sample plate is Ra 3.2-1.6 um.

[0019] Compared with the prior art, the utility model has the beneficial technical effects:

[0020] The utility model discloses a detachable sampling block is preset at the detection point of the drill pipe joint test piece, and the detachable structure is simple, reasonable, easy to manufacture and convenient to operate, can simulate the shot effect and realize quantitative detection for different structure positions, and comprehensively reflects the shot process quality of each part of the joint.

[0021] The utility model discloses a kind of drilling pipe joint test pieces, it is characterized by: drilling pipe joint test piece is provided with the outer wall, and the outer wall is provided with the sample block.

[0022] The utility model discloses a kind of drilling pipe joint test pieces, it is characterized by: drilling pipe joint test piece is provided with the outer wall, and the outer wall is provided with the sample block.

[0023] The utility model discloses a kind of drilling pipe joint test pieces, it is characterized by: drilling pipe joint test piece is provided with the outer wall, and the outer wall is provided with the sample block.

[0024] The utility model discloses a kind of drilling pipe joint test pieces, it is characterized by: drilling pipe joint test piece is provided with the outer wall, and the outer wall is provided with the sample block. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 For the structure three-dimensional schematic view of the utility model for simulating the detection drilling pipe joint outer wall shot blasting quality detection device.

[0026] Figure 2 For Figure 1 The structure three-dimensional schematic view of the drilling pipe joint test piece shown in figure 1.

[0027] Figure 3 For Figure 1 The structure schematic view of the sample block shown in figure 4.

[0028] Figure 4 For Figure 3 The split schematic view of the sample block shown in figure 4.

[0029] In the figure: 1-drill pipe joint test piece, 1.1-radial notch, 1.2-axial notch, 1.3-alpha window, 1.4-beta window, 1.5-screw hole, 2-sampling block, 2.1-fixing assembly, 2.2-sample plate, 2.3-base, 3-fastener. DETAILED DESCRIPTION

[0030] The utility model will be further explained in connection with the drawings and examples.

[0031] As Figure 1 shown, the utility model provides a kind of detection device for simulating detection drill pipe joint outer wall shot quality, it includes drill pipe joint test piece 1, sampling block 2 and fastener 3. Figure 3 And Figure 4 Sampling block 2 as shown in the figure is a combination, it is composed of fixing assembly 2.1, sample plate 2.2 and base 2.3.Sampling block 2 is combined structure, base 2.3 is I-shaped boss structure, it is convenient to be positioned in opening accurately, fixing assembly 2.1, using screw structure, with base cooperation, sample plate is fixed in the opening of drill pipe joint test piece 1 preposition.

[0032] Drill pipe joint test piece 1 as Figure 2 Shown, this piece uses the finished product drill pipe joint to be detected, the conical external thread on its outer wall has been processed into shape.In order to realize the expected simulation detection function, preposition opening is set at multiple detection point positions of test piece outer wall, including:

[0033] First, rectangular radial notch 1.1 and axial notch 1.2 are set at the small diameter end pipe orifice of conical external thread, alpha window 1.3 that is rectangular and penetrates inner and outer wall is set at the middle section of conical external thread, and beta window 1.4 is set on shoulder outer wall, the bottom edge of these radial notch 1.1, axial notch 1.2, alpha window 1.3 and beta window 1.4 for disposing sampling block 2 is equipped with screw hole 1.5, sampling block 2 installed in place here is locked with bolt 3 and screw hole 1.5 cooperation, thereby constitute a kind of detection device for simulating detection drill pipe joint outer wall shot quality.

[0034] The utility model discloses a structure feature mainly embodies in the sample block 2 of setting according to the drill pipe joint test piece 1 in the drill pipe joint test piece 1, and the sample block 2 is detachable. The equal position configuration design is simple in structure, easy to make, convenient to operate, and the most important is that the sample block 2 is detachable, thereby directly simplifying the detection condition, and the simulation is good, and the detection precision is high. After the shot blasting process, the sample block 2 is sequentially removed from the drill pipe joint test piece 1, and the sample block 2 in the free state can be placed flat, and the sample block 2 placed flat is convenient for detection with conventional detection instrument. The drill pipe joint test piece 1 in the embodiment is provided with four test points with the sample block 2 as the carrier, the first test point is located at the end face of the small diameter end of the drill pipe joint test piece 1, the second test point is located at the outer wall of the small diameter end of the drill pipe joint test piece 1, the third test point is located at the middle section of the conical external thread arranged in the drill pipe joint test piece 1, and the fourth test point is located on the shoulder outer wall, and the four test point positions are determined by the radial notch 1.1, the axial notch 1.2, the alpha window 1.3 and the beta window 1.4.

[0035] From the optimization structure angle, the four test points are arranged in the uniform distribution as shown in the drawing, that is, arranged in four equal parts on the cross section of the drill pipe joint test piece 1. Figure 1 Since the conical external thread arranged in the drill pipe joint test piece 1 is triangular in shape, that is, the two side faces of the thread are inclined, the position of the spray gun is correspondingly inclined when the shot blasting process is carried out on the segment, so that the expected requirement can be achieved. In order to reduce the simulation detection error, the bottom edge of the alpha window 1.3 arranged in the drill pipe joint test piece 1 is inclined by the same amount according to the inclined angle of the positive side face of the thread. When the shot blasting process is carried out on the negative side face of the thread, the adjacent shoulder will be affected, so the bottom edge of the beta window 1.4 arranged in the shoulder is inclined by the same amount according to the inclined angle of the negative side face of the thread. In short, the inclined directions of the bottom edges of the alpha window 1.3 and the beta window 1.4 along the axial direction are opposite, but the inclined angles are equal, and the inclined angle should be equal to half of the tooth angle of the matching conical thread.

[0036] On the basis of completing the simulation detection structure design, the utility model discloses corresponding technical requirement to relevant supporting parts, to obtain ideal detection accuracy. One of the technical requirements, the sample block 2 is matched with the sample plate 2.2, and the material of the sample plate 2.2 is same with the material of the drill pipe joint to be detected, and the sample plate 2.2 is required to experience the same heat treatment process. The second technical requirement, the size of the sample plate 2.2 matched with the sample block 2 is the long strip-shaped thin plate part with the thickness of 1.0-1.6mm, the length of 15-200mm and the width of 3.0-5.0mm, and the roughness grade of the plate surface is required to be same with the grade marked on the corresponding detection point of the drill pipe joint to be detected, and the roughness grade is Ra3.2-1.6um, to ensure that the detection result is real and reliable. When applied, the principle of selecting the size of the sample plate 2.2 is determined according to the size of the drill pipe joint to be detected, that is, if the size of the drill pipe joint to be detected is large, the sample plate 2.2 with large size is used, otherwise the sample plate 2.2 with small size is used. In the embodiment, the size of the sample plate 2.2 is 1.2mm thick, 18mm long and 4.0mm wide. The sample plate 2.2 matched with the sample block 2 in the utility model is a disposable commodity, and a new piece is used for detection each time. Since the size of the sample plate 2.2 is small, the shape is simple, and the manufacturing cost is low, so the actual application cost is very small, which is beneficial to further popularization and application.

[0037] In order to facilitate the understanding of the above technical scheme of the utility model, the above technical scheme of the utility model is described in detail through specific use mode.

[0038] The specific working process is: using the drill pipe joint to be detected as a test piece 1, the outer wall of which includes a conical external thread section, a small-diameter end face, a shoulder and other parts. These parts are the key parts of the shot blasting process and need to be simulated and detected. According to the position and characteristics of the detection area, a plurality of openings are opened on the outer wall of the test piece, including: a radial notch 1.1 and an axial notch 1.2 located at the small-diameter end pipe orifice for detecting the shot blasting quality of the end face. A window 1.3 is located in the middle of the conical external thread for detecting the thread shot blasting quality. A window 1.4 is located on the outer wall of the shoulder for detecting the shot blasting quality of the shoulder. Then the sampling block 2 is positioned in the opening. The sampling block includes a base 2.3, a sample plate 2.2 and a fixing assembly 2.1. The sampling block is fixed in the corresponding opening of the drill pipe joint test piece by using fasteners 3, so that the outer surface of the sampling block is consistent with the surface of the test piece. Ensure that all sampling blocks are installed stably, the surface is flat, and the surface is in the same plane as the surface of the test piece, so as to avoid affecting the shot blasting process. Then, according to the process requirements of the drill pipe joint, the parameters of the shot blasting equipment are set, including the spraying angle, the shot diameter, the speed and the like. The test piece equipped with the sampling block is subjected to shot blasting treatment. The material and heat treatment process of the sampling block are consistent with those of the test piece, so as to ensure that the stress and effect of the sampling block in the shot blasting process are consistent with those of the surface of the test piece. Then, the fasteners 3 are removed by using tools, and the sampling block 2 is removed from the test piece. The removed sampling block remains intact and does not affect the surface of the sample plate 2.2. The sample plate 2.2 is separated from the sampling block, and the surface of the sample plate will be used for subsequent quality detection. The sample plate is placed flat, and the roughness, hardening depth and other performance parameters of the surface of the sample plate are detected by using conventional detection equipment such as a microscope, a roughness measuring instrument and the like. The actual effect of the shot blasting process is evaluated according to the detection data of the sample plate. By comparing the detection data of each sampling block, the shot blasting quality of the small-diameter end face, the conical external thread, the shoulder and other key parts of the drill pipe joint is comprehensively evaluated. According to the detection data, the parameters of the shot blasting equipment such as the spraying angle, the speed and the particle size are adjusted, and the shot blasting process is optimized to meet the requirements of different parts. The detection data is recorded for providing a scientific basis for subsequent shot blasting process design of similar workpieces. Subsequently, the drill pipe joint test piece and the sampling block base and the fixing assembly can be reused, only the sample plate 2.2 is replaced, and the detection cost is reduced. The removed sampling block is stored according to the position for subsequent analysis and recording.

[0039] Through the above process, the shot blasting quality of the complex-shaped outer wall such as the conical external thread section and the shoulder can be simulated and detected, the reliability and accuracy of the detection data are ensured, the shot blasting process parameters are optimized, the detection cost is reduced, and the detection efficiency is improved.

[0040] In the description of the utility model, it is necessary to explain that the position or location relation indicated by the terms "upper", "lower" and the like is the position or location relation based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the utility model. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] It should be noted that in the utility model, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0042] The above is only a specific embodiment of the utility model, enabling those skilled in the art to understand or implement the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features of the utility model described herein.

Claims

1. A detection device for simulating detection of shot peening quality of an outer wall of a drill pipe joint, comprising a drill pipe joint test piece (1), a sampling block (2) and a fastener (3), characterized in that, The outer wall of the drill pipe joint test piece (1) is provided with a plurality of openings for installing sampling blocks, each opening corresponds to a position to be detected, including the opening provided at the small diameter end of the conical outer thread of the drill pipe joint test piece (1), and the opening provided at the middle section of the conical outer thread, the opening is a radial through hole in the inner and outer wall, and the opening provided on the shoulder outer wall, the opening is a through hole or window in the drill pipe joint test piece (1), and forms an open structure in at least one direction; the sampling block (2) is in a combined structure, the sampling block (2) is detachably fixed in the opening by a fastener (3), the sampling block (2) and the outer surface of the drill pipe joint test piece (1) are in the same shot blasting process environment for simulating the detection of shot blasting quality.

2. The device for simulating detection of shot peening quality of an outer wall of a drill pipe joint according to claim 1, characterized in that, The opening of the drill pipe joint test piece includes radial notch (1.1) and axial notch (1.2) and window A (1.3) and window B (1.4), the radial notch (1.1) and the axial notch (1.2) are arranged at the small diameter end of the conical outer thread and have a rectangular structure, the radial notch (1.1) and the axial notch (1.2) are used for positioning the installation position of the sampling block, the window A (1.3) is arranged at the middle section of the conical outer thread and has a rectangular structure, the window B (1.4) is arranged on the shoulder outer wall and has a rectangular structure, the radial notch (1.1) and the axial notch (1.2) are used for arranging the sampling block (2).

3. The device for simulating detection of shot peening quality of an outer wall of a drill pipe joint according to claim 2, characterized in that, The radial notch (1.1), the axial notch (1.2), the window A (1.3) and the window B (1.4) built in the drill pipe joint test piece (1) are arranged in four equal parts in the cross section, so as to realize the simulation detection of shot blasting quality at multiple key positions of the drill pipe joint.

4. The device for simulating detection of shot peening quality of an outer wall of a drill pipe joint according to claim 3, characterized in that, The bottom edges of the window A (1.3) and the window B (1.4) built in the drill pipe joint test piece (1) are arranged in an axial inclined manner, the inclination angle is equal to half of the tooth type angle of the conical outer thread of the drill pipe joint, and the inclination directions of the bottom edges of the window A (1.3) and the window B (1.4) are opposite, so as to correspond to the actual spraying angle of the shot blasting process.

5. The device for simulating detection of shot peening quality of an outer wall of a drill pipe joint according to claim 4, characterized in that, The radial notch (1.1), the axial notch (1.2), the window A (1.3) and the window B (1.4) are provided with screw holes (1.5), the sampling block (2) installed in place is locked by bolts (3) and screw holes (1.5), thereby forming a detachable simulation detection structure of the drill pipe joint test piece (1) matched with the sampling block (2).

6. The apparatus for simulating detection of shot quality of an outer wall of a drill pipe joint according to claim 1, wherein The sampling block (2) includes a sample plate (2.2), a base (2.3) and a fixing assembly (2.1), the base (2.3) has an I-shaped boss structure, the sample plate (2.2) is arranged on the upper end of the base (2.3) and is locked and fixed by the fixing assembly (2.1).

7. The apparatus for simulating detection of shot quality of an outer wall of a drill pipe joint according to claim 6, wherein The sample plate (2.2) is a long strip-shaped thin plate, the thickness is 1.0-1.6mm, the length is 15-20mm, and the width is 3.0-5.0mm.

8. The device for simulating detection of shot peening quality of an outer wall of a drill pipe joint according to claim 6, characterized in that, The material of the sample plate (2.2) is the same as that of the drill pipe joint (1) to be detected, and the heat treatment is also the same, so as to ensure that the simulation detection result accurately reflects the shot blasting process effect.

9. The apparatus for simulating detection of shot quality of an outer wall of a drill pipe joint according to claim 6, wherein The surface roughness of the sample plate (2.2) is Ra3.2-1.6um.

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