A device for rapid inspection of a natural gas pipeline joint

Abstract

The utility model provides a kind of natural gas pipeline joint rapid inspection device, including testing fixture bottom plate, support assembly and outer detection component, support assembly is protruding in the top surface of testing fixture bottom plate, the top of support assembly is provided with multiple equal-height support points, support assembly is measured pipeline joint piece with preset height level and is suspended in the top of testing fixture bottom plate by support point;Outer detection component includes two detection clamps, for with side seal plate side edge shape concave-convex cooperation detection;It also includes two joint detection shafts respectively arranged in the both ends of support assembly, joint detection shaft is perpendicular to the direction of detection clamp, the position of joint detection shaft is consistent with the both end interface position of pipeline joint piece flat on support assembly, for detecting interface, can complete the shape detection of joint and side seal plate of natural gas pipeline joint piece once, simple and quick operation, the device structure used is simple and does not need various measuring equipment required by existing detection procedure.

Description

Technical Field

[0001] This utility model relates to the field of natural gas transmission equipment technology, and more specifically, to a rapid inspection device for natural gas pipeline joints. Background Technology

[0002] Natural gas pipeline joints are key components in pipeline connections, and their machining precision directly affects sealing performance and system safety. The pipeline joint in this application includes a straight pipe body of a certain length, with coaxial interfaces at both ends. A hexagonal side sealing plate is integrally connected to the outer peripheral wall of the short straight pipe body. The side sealing plate has an opening connecting to the internal pipeline for sealing and fixing with branch pipeline joints. Based on the basic working requirements of natural gas pipeline joints, certain requirements are placed on the external dimensions of the joint components to ensure a tight seal and prevent gas leakage. These requirements mainly include the following:

[0003] 1. The interfaces at both ends are coaxial; 2. The inner wall diameter and roundness of both interfaces meet the standards; 3. The relative position and angle between the side sealing plate and the straight pipe body meet the standard; 4. The side edge shape accuracy of the side sealing plate meets the standard.

[0004] Currently, the above-mentioned shape accuracy inspection requires the use of measuring tools such as calipers, radius gauges, laser rulers, or coordinate measuring machines (CMMs), and involves specialized inspection operations in stages. However, general-purpose measuring tools can only obtain local dimensional data and cannot fully reflect the overall shape error of the side edges; while laser rulers and CMMs, although highly accurate, are expensive, complex to operate, and unsuitable for rapid inspection on the production floor. Furthermore, all of these inspection methods require skilled workers to complete, resulting in a waste of manpower in the dimensional inspection process, and consuming relatively long working hours, making them inefficient and unable to meet the real-time quality control requirements of mass production.

[0005] In summary, the existing methods for inspecting the external dimensions of natural gas pipeline joints suffer from high costs and low efficiency. Utility Model Content

[0006] The technical problem to be solved by this utility model is that the external dimension inspection of existing natural gas pipeline joints is characterized by high cost and low efficiency.

[0007] To address the aforementioned problems, this utility model provides a rapid inspection device for natural gas pipeline joints, comprising a fixture base plate, a support assembly, and an external inspection assembly. The support assembly protrudes from the top surface of the fixture base plate, and its top end has multiple support points of equal height. The support assembly suspends the pipeline joint to be tested horizontally above the fixture base plate at a preset height via these support points. The external inspection assembly includes two inspection plates symmetrically distributed on both sides of the support assembly. The height of the inspection plates is consistent with the height of the side sealing plate of the pipeline joint placed flat on the support assembly. The two inspection plates have inspection surfaces on their opposing side edges, and the shape of the inspection surfaces convexly and concavely matches the shape of the side edge of the side sealing plate. The external inspection assembly also includes two joint inspection shafts respectively disposed at both ends of the support assembly. The orientation of the joint inspection shafts is perpendicular to the orientation of the inspection plates, and their positions are consistent with the positions of the two end interfaces of the pipeline joint placed flat on the support assembly. The outer diameter of the joint inspection shaft matches the inner diameter of the pipeline joint to be tested.

[0008] This utility model provides a rapid testing device for pipe fittings. By designing a gauge adapted to the outline of natural gas pipeline fittings, it achieves a one-time shape comparison test, replacing the original multi-gauge, multi-step testing method. The structure mainly consists of a gauge base plate, a support assembly, and an external testing assembly. The support assembly places the pipe fitting to be tested horizontally above the gauge base plate at a preset spacing to ensure accurate shape detection. The external testing assembly is divided into a testing plate for the side sealing plate and a joint testing shaft, depending on the position of the workpiece. The distribution and shape of the two testing plates are adapted to the size and outline of the side sealing plate. If the outer edge of the side sealing plate can be completely submerged in the space formed between the detection surfaces of the two detection plates and is in contact with the detection surfaces, the outer shape of the side sealing plate is deemed to be qualified. The two joint detection shafts correspond to the two interfaces at both ends of the pipe joint to be tested. Whether the joint detection shafts can enter the joint of the pipe joint to be tested determines whether the size of the joint is qualified. The rapid detection device provided by this utility model can complete the shape detection of the joint and side sealing plate of the natural gas pipe joint in one go. It is simple and quick to operate. The device structure is simple and does not require the various measuring equipment required by the existing detection process. It effectively solves the technical problems of high cost and low efficiency in the external dimension inspection of existing natural gas pipe joints.

[0009] As a preferred embodiment, the outer end of the connector detection shaft is fixed to the top surface of the fixture base plate via a shaft bracket. The shaft bracket is provided with a sliding insertion hole along the axial direction of the connector detection shaft. The connector detection shaft can be slidably inserted into the sliding insertion hole, allowing the connector detection shaft to extend axially into the interfaces at both ends of the connector to be tested. This design optimizes the structure of the connector detection shaft and its fit with the fixture base plate. A shaft bracket for supporting the connector detection shaft is installed on the fixture base plate. The shaft bracket is slidably inserted into the connector detection shaft via a sliding insertion hole. This structure requires ensuring that the position and height of the sliding insertion hole on the shaft bracket are compatible with the structure of the support assembly, ensuring compatibility with the interface position of the connector to be tested, and ensuring the implementation of the test.

[0010] As a preferred embodiment, the central axes of the two connector detection axes are located on the same straight line. This design further optimizes the positional distribution of the two connector detection axes, making the two connector detection axes, or sliding sockets, coaxially distributed. With this design, the coaxiality of the two ends of the connector under test can be detected by the two connector detection axes to determine whether it meets the standard requirements, further simplifying the testing steps of the connector under test by this device.

[0011] As a preferred embodiment, the support assembly includes four support columns that protrude vertically from the top surface of the inspection fixture base plate. These support columns are rectangularly distributed and correspond to the four corners of the side sealing plate of the pipe fitting. All support columns are of equal length. This design provides a preferred support assembly design consisting of four rectangularly distributed support columns. The four support columns correspond to the four corners of the side sealing plate in a flat position. The equal length of each support column ensures the horizontality of the pipe fitting it supports. This structural design, combined with the height design of the joint detection shafts at both ends, allows for the confirmation of whether the positional relationship between the straight pipe body of the pipe fitting under test and the side sealing plate meets the standard by placing the workpiece and observing its fit with the joint detection shafts at both ends.

[0012] As a preferred embodiment, the detection plate has a groove at its center along the length of the detection surface, which is used to reserve a gap between the detection surface of the detection plate and the edge of the side sealing plate of the pipe fitting to be tested. This design optimizes the fit between the detection surface of the detection plate and the workpiece to be tested. Since the edge of the side sealing plate, which mainly plays a sealing role, is near the four corners corresponding to the four support columns, and the areas near the center of each side edge of the side sealing plate are not critical areas for shape detection, a groove is appropriately placed at the corresponding position of the detection surface of the detection plate. This structure reserves a certain gap between the groove and the side edge of the side sealing plate, facilitating the removal of the workpiece from between the two detection plates.

[0013] As a preferred embodiment, the detection plate has a plate bracket connected to the end facing away from the connector to be tested, and the plate bracket is detachably connected to the fixture base plate. This design provides a preferred connection and mating method between the detection plate and the fixture base plate, wherein the detection plate is positioned at the required height above the fixture base plate by the plate bracket, and the connection between the plate bracket and the fixture base plate is detachable.

[0014] As a preferred embodiment, the two ends of the card holder are respectively provided with a socket structure and a platform structure, which are used for insertion and fixing with the detection card and the fixture base plate, respectively. This design adopts a plug-in connection method with sockets and platforms for the installation of the card holder with the detection card and the fixture base plate. Sockets or platforms are also provided at corresponding positions on the detection card and the fixture base plate, making disassembly and assembly simple and replacement and maintenance parts easy.

[0015] As a preferred embodiment, the joint detection shaft is a hollow circular tube whose length is adapted to the interface depth of the pipe joint to be tested. This design optimizes the structure of the joint detection shaft by making its interior hollow, using a hollow circular tube design to save materials and reduce the weight of the inspection tool. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a rapid inspection device for natural gas pipeline joints provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the rapid inspection device for natural gas pipeline joints in use. Figure 3 for Figure 2 A cross-sectional structural diagram of a rapid inspection device for natural gas pipeline joints.

[0017] in, Figures 1-3 middle: 1. Pipe fitting; 2. Side sealing plate; 3. Fitting inspection shaft; 4. Shaft support; 5. Inspection clamp; 6. Clamp support; 7. Inspection fixture base plate; 8. Support column; 9. Groove. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] Before providing a detailed explanation of the working principle of this utility model, further clarification is needed regarding its description: In this description, terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a welded connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] refer to Figures 1-3 The following examples illustrate this. Figure 1 A schematic diagram of the structure of a rapid inspection device for natural gas pipeline joints provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the rapid inspection device for natural gas pipeline joints in use. Figure 3 for Figure 2 A cross-sectional structural diagram of a rapid inspection device for natural gas pipeline joints.

[0022] This utility model provides a rapid inspection device for natural gas pipeline joints, including a fixture base plate 7, a support assembly, and an external inspection assembly. The support assembly protrudes from the top surface of the fixture base plate 7, and has multiple support points of equal height at its top. The support assembly suspends the pipeline joint 1 to be tested horizontally above the fixture base plate 7 at a preset height through these support points. The external inspection assembly includes two inspection plates 5, which are symmetrically distributed on both sides of the support assembly. The height of the inspection plates 5 is the same as the height of the side sealing plate 2 of the pipeline joint 1 placed flat on the support assembly. The two inspection plates 5 have inspection surfaces on their opposing side edges, and the shape of the inspection surfaces is concave-convex with the shape of the side edge of the side sealing plate 2. The external inspection assembly also includes two joint inspection shafts 3 respectively disposed at both ends of the support assembly. The orientation of the joint inspection shafts 3 is perpendicular to the orientation of the inspection plates 5. The position of the joint inspection shafts 3 is consistent with the position of the two end interfaces of the pipeline joint 1 placed flat on the support assembly. The outer diameter of the joint inspection shafts 3 matches the inner diameter of the joint of the pipeline joint 1 to be tested.

[0023] This utility model provides a rapid testing device for pipe fittings. By designing a gauge adapted to the outline of a natural gas pipeline fitting 1, it achieves a one-time shape comparison test, replacing the original multi-gauge, multi-step testing method. The structure mainly consists of a gauge base plate 7, a support assembly, and an external testing assembly mounted on it. The support assembly places the pipe fitting 1 to be tested horizontally above the gauge base plate 7 at a preset spacing to ensure accurate shape detection. The external testing assembly is divided into a testing plate 5 for the side sealing plate 2 of the pipe fitting 1 and a joint testing shaft 3, depending on the position of the workpiece. The distribution and shape of the two testing plates 5 are adapted to the size and outline of the side sealing plate 2. If the outer edge of the side sealing plate 2 can be completely submerged in the space formed between the detection surfaces of the two detection plates 5 and is in contact with the detection surfaces, then the outer shape of the side sealing plate 2 is deemed to be qualified. The two joint detection shafts 3 correspond to the two interfaces at both ends of the pipe joint 1 to be tested. Whether the joint detection shafts 3 can enter the joint of the pipe joint 1 to be tested determines whether the size of the joint is qualified. The rapid detection device provided by this utility model can complete the shape detection of the joint and side sealing plate 2 of the natural gas pipe joint 1 in one go. The operation is simple and fast. The device structure is simple and does not require the various measuring equipment required by the existing detection process. It effectively solves the technical problems of high cost and low efficiency in the external dimension inspection of existing natural gas pipe joints.

[0024] In the technical solution provided in this embodiment, the outer end of the connector detection shaft 3 is fixed to the top surface of the fixture base plate 7 via a shaft bracket 4. The shaft bracket 4 is provided with a sliding insertion hole along the axial direction of the connector detection shaft 3. The connector detection shaft 3 can be slidably inserted into the sliding insertion hole, allowing the connector detection shaft 3 to extend axially into the interfaces at both ends of the connector to be tested. This design optimizes the structure of the connector detection shaft 3 and its fit with the fixture base plate 7. A shaft bracket 4 for supporting the connector detection shaft 3 is installed on the fixture base plate 7. The shaft bracket 4 is slidably inserted into the connector detection shaft 3 via the sliding insertion hole. This structure requires ensuring that the position and height of the sliding insertion hole on the shaft bracket 4 are adapted to the structure of the support assembly, ensuring adaptation to the interface position of the connector to be tested, and ensuring the implementation of the test.

[0025] In the technical solution provided in this embodiment, the central axes of the two connector detection shafts 3 are located on the same straight line. This design further optimizes the positional distribution of the two connector detection shafts 3, making the two connector detection shafts 3, or sliding sockets, coaxially distributed. With this design, the coaxiality of the two ends of the connector under test can be detected by the two connector detection shafts 3 to determine whether it meets the standard requirements, further simplifying the detection steps of the connector under test by this device.

[0026] In the technical solution provided in this embodiment, the support assembly includes four support columns 8 that protrude vertically from the top surface of the inspection fixture base plate 7. The support columns 8 are rectangularly distributed and correspond to the four corners of the side sealing plate 2 of the pipe joint 1. Each support column 8 is of equal length. This design provides a preferred support assembly design, consisting of four rectangularly distributed support columns 8. The four support columns 8 correspond to the four corners of the side sealing plate 2 in a flat state. The equal length of each support column 8 ensures the horizontality of the pipe joint supported by it. This design structure, combined with the height design of the joint detection shafts 3 at both ends, allows for the confirmation of whether the positional relationship between the straight pipe body of the pipe joint under test and the side sealing plate 2 meets the standard by placing the workpiece and observing its fit with the joint detection shafts 3 at both ends.

[0027] In the technical solution provided in this embodiment, a groove 9 along the length of the detection surface is provided at the center of the detection surface of the detection plate 5, which is used to reserve a part removal gap between the detection surface of the detection plate 5 and the edge of the side sealing plate 2 of the pipe joint 1 to be tested. This design optimizes the fit between the detection surface of the detection plate 5 of the detection device and the workpiece to be tested. Since the edge of the side sealing plate 2, which mainly plays a sealing role, is near the four corners corresponding to the four support columns 8, and the areas near the center of each side edge of the side sealing plate 2 are not the key areas for shape detection, a groove 9 is appropriately placed at the corresponding position of the detection surface of the detection plate 5. Through this structure, a certain gap is reserved between the groove and the side edge of the side sealing plate 2, which facilitates the removal of the workpiece from between the two detection plates 5.

[0028] In the technical solution provided in this embodiment, the detection plate 5 is connected to a plate bracket 6 at the end facing away from the connector to be tested, and the plate bracket 6 is detachably connected to the fixture base plate 7. This design provides a preferred connection and cooperation method between the detection plate 5 and the fixture base plate 7, in which the detection plate 5 is positioned above the fixture base plate 7 at the required height by the plate bracket 6, and the connection between the plate bracket 6 and the fixture base plate 7 is detachable.

[0029] In the technical solution provided in this embodiment, the two ends of the card plate bracket 6 are respectively provided with a socket structure and a platform structure, which are used to be plugged and fixed with the detection card plate 5 and the fixture base plate 7, respectively. This design uses a plug-in connection method with sockets and platforms for the installation of the card plate bracket 6 with the detection card plate 5 and the fixture base plate 7. Sockets or platforms are also provided at corresponding positions on the detection card plate 5 and the fixture base plate 7, making disassembly and assembly simple and facilitating the replacement and maintenance of parts.

[0030] In the technical solution provided in this embodiment, the joint detection shaft 3 is a hollow round tube whose length is adapted to the interface depth of the pipe joint 1 to be tested. The structure of the joint detection shaft 3 is optimized by making the inside of the joint detection shaft 3 hollow and adopting a hollow round tube design, which saves materials and reduces the weight of the inspection tool.

[0031] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A rapid inspection device for natural gas pipeline joints, characterized in that, The device includes a base plate (7), a support assembly, and an external inspection assembly. The support assembly protrudes from the top surface of the base plate (7) and has multiple support points of equal height at its top. The support assembly suspends the pipe fitting (1) to be tested horizontally above the base plate (7) at a preset height through these support points. The external inspection assembly includes two inspection plates (5), which are symmetrically distributed on both sides of the support assembly. The height of the inspection plates (5) is the same as the height of the side sealing plate (2) of the pipe fitting (1) placed flat on the support assembly. The two detection plates (5) are provided with detection surfaces on their opposite side edges. The shape of the detection surfaces is in concave-convex fit with the side edge shape of the side sealing plate (2). The external detection assembly also includes two joint detection shafts (3) respectively set at both ends of the support assembly. The orientation of the joint detection shafts (3) is perpendicular to the orientation of the detection plates (5). The position of the joint detection shafts (3) is consistent with the position of the two end interfaces of the pipe joint (1) placed flat on the support assembly. The outer diameter of the joint detection shafts (3) matches the inner diameter of the joint of the pipe joint (1) to be tested.

2. The rapid inspection device for natural gas pipeline joints according to claim 1, characterized in that, The outer end of the joint detection shaft (3) is fixed to the top surface of the inspection base plate (7) by the shaft bracket (4). The shaft bracket (4) is provided with a sliding insertion hole along the axial direction of the joint detection shaft (3). The joint detection shaft (3) and the sliding insertion hole can be slidably inserted into each other, so that the joint detection shaft (3) can extend into the interfaces at both ends of the pipe joint (1) to be tested along the axial direction.

3. The rapid inspection device for natural gas pipeline joints according to claim 2, characterized in that, The central axes of the two joint detection axes (3) are located on the same straight line.

4. The rapid inspection device for natural gas pipeline joints according to claim 3, characterized in that, The support assembly includes four support columns (8) that protrude vertically from the top surface of the inspection fixture base plate (7). The support columns (8) are distributed in a rectangular pattern and correspond to the four corners of the side sealing plate (2) of the pipe joint (1). Each support column (8) is of equal length.

5. The rapid inspection device for natural gas pipeline joints according to claim 4, characterized in that, The detection plate (5) has a groove (9) at the center of the detection surface along the length of the detection surface, which is used to reserve a gap between the detection surface of the detection plate (5) and the edge of the side sealing plate (2) of the pipe joint (1) to be tested.

6. The rapid inspection device for natural gas pipeline joints according to claim 5, characterized in that, The detection plate (5) has a plate bracket (6) connected to one end away from the pipe joint (1) to be tested. The plate bracket (6) is detachably connected to the inspection tool base plate (7).

7. The rapid inspection device for natural gas pipeline joints according to claim 6, characterized in that, The two ends of the card plate bracket (6) are respectively provided with a socket structure and a platform structure, which are used to be inserted and fixed with the detection card plate (5) and the inspection base plate (7).

8. The rapid inspection device for natural gas pipeline joints according to claim 1, characterized in that, The joint detection shaft (3) is a hollow round tube whose length is adapted to the interface depth of the pipe joint (1) to be tested.

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