Simulator for verifying nondestructive testing process of service pipeline

Abstract

The utility model relates to a service pipeline nondestructive testing process verification simulator, which belongs to the technical field of pipeline detection and comprises a bottom plate, and two vertical plates are fixed on the upper surface wall of the bottom plate and are symmetrically arranged; the two vertical plates are jointly provided with a plurality of inserting grooves, the inserting grooves are formed in the X direction, and the symmetry axis of the two vertical plates is parallel to the X direction. The plug board A and the plug board B are the same in shape and can be respectively inserted into one of the slots; the plugboard A and the plugboard B have various wall thicknesses and materials; a cavity defined by the inserting plate A, the inserting plate B, the two vertical plates and the bottom plate is Z; a medium filling bag is arranged in the cavity Z. The medium filling bag can be inflated to expand and is attached to the inner wall of the cavity Z. The inserting plate A or the inserting plate B is provided with defects. According to the device, the insertion plate A and the insertion plate B are inserted into different insertion grooves respectively, so that the distance between the insertion plate A and the insertion plate B is changed, and the distance is regarded as the inner diameter of a field pipeline. Various on-site pipeline inner diameters can be simulated, and original various pipelines in a laboratory are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline detection, and particularly relates to a non-destructive testing process verification simulator for in-service pipelines. Background Technique

[0002] For in-service pipelines, a ray machine is usually used to detect pipeline defects on-site. The inspection regulations stipulate that before the ray machine conducts on-site detection of pipelines, it is necessary to preliminarily set parameters such as the current, voltage, and exposure time of the ray machine in the laboratory to ensure that the images presented by the ray machine for the defects of the on-site pipelines are clear. For pipelines with different inner diameters, different wall thicknesses, or different media in the pipeline, the settings of the current, voltage, and exposure time of the ray machine are also different.

[0003] In the existing method, in order for the ray machine to have the ability to clearly image defects in pipelines under different conditions such as different inner diameters, different wall thicknesses, and different gases filled in the pipeline, various specifications of pipelines consistent with the on-site specifications are often prepared in the laboratory for the ray machine to test different standard pipelines and set the above parameters. For example, the pipeline specifications prepared in the laboratory are: stainless steel pipeline A with an inner diameter of 5 cm and a wall thickness of 2 cm; carbon steel pipeline B with an inner diameter of 5 cm and a wall thickness of 1 cm; stainless steel pipeline C with an inner diameter of 6 cm and a wall thickness of 2 cm, etc. The number of these pipelines used for the ray machine to debug parameters and make the defect images clear is very large, and it is inconvenient to find when replacing a pipeline of a different specification for detection. Content of the Utility Model

[0004] The non-destructive testing process verification simulator for in-service pipelines of the utility model can simulate on-site pipelines with different inner diameters, different wall thicknesses, or different materials, so that the ray machine can adjust parameters to present clear images.

[0005] To achieve the above purpose, the non-destructive testing process verification simulator for in-service pipelines of the utility model includes a bottom plate. Two vertical plates are fixedly arranged on the upper surface of the bottom plate, and the two vertical plates are symmetrically arranged; a plurality of slots are jointly opened on the two vertical plates. Looking at the top view, the plurality of slots are arranged along the X direction, and the symmetry axis of the two vertical plates is parallel to the X direction;

[0006] It further includes plug plates A and B with the same shape. Plug plates A and B can be respectively inserted into one of the slots; there are various wall thicknesses and materials for plug plates A and B; the wall thicknesses and materials of plug plates A and B are respectively consistent with the wall thicknesses and materials of the on-site pipelines;

[0007] Let the cavity formed by plug plate A, plug plate B, the two vertical plates, and the bottom plate be cavity Z; a medium filling bag is arranged in cavity Z, and the medium filling bag can be inflated or filled with liquid to expand and fit the inner wall of cavity Z. There are defects on plug plate A or plug plate B, and the positions and shapes of the defects are known.

[0008] Further, the plug board A and the plug board B are arc-shaped plates, and the shape of the arc-shaped plate is a minor circular arc; when the plug board A and the plug board B are respectively in different slots, the maximum distance between the two arc-shaped plates is P, and P is the inner diameter of the on-site pipeline.

[0009] Further, the plug board A and the plug board B are flat plates, and when the plug board A and the plug board B are respectively in different slots, the distance between the two flat plates is P, and P is the inner diameter of the on-site pipeline.

[0010] Further, let the vertical plane where the symmetry axis of the plug board A or the plug board B is located be plane G, and the defect is on the plane G.

[0011] Since the maximum distance P between the plug board A and the plug board B is used to represent the inner diameter of the pipeline; therefore, the defect is set on the plane G to accurately reflect the imaging clarity of the defect under the condition of the maximum distance P. If the defect is not on the plane G, the imaging clarity may not be for the on-site pipeline with the inner diameter of the P value, but for other pipelines with an inner diameter smaller than the P value of the on-site pipeline, and the reflected effect will be inaccurate.

[0012] Further, the P includes 5 cm, 8 cm, 10 cm or 12 cm.

[0013] In view of the size of the on-site pipeline, several common inner diameter situations of the on-site pipeline are selected, and when reflected in the maximum distance P, they are respectively 5 cm, 8 cm, 10 cm or 12 cm.

[0014] Further, scale lines are arranged on the upper surfaces of the two vertical plates, and the scale lines are arranged along the X direction.

[0015] The arrangement of the scale lines can roughly obtain the distance between the ends of the plug board A and the plug board B, but the maximum distance between the plug board A and the plug board B is greater than the distance between their ends. However, since the radian between the plug board A and the plug board B is determined, the maximum distance between the plug board A and the plug board B can be indirectly represented; for example, if the difference between the ends of the plug board A and the plug board B is 3 cm, then the maximum distance P between the plug board A and the plug board B is 5 cm; if the difference between the ends of the plug board A and the plug board B is 8 cm, then the maximum distance P between the plug board A and the plug board B is 10 cm; and so on. In this way, it is not necessary to measure the maximum distance between the plug board A and the plug board B every time. Moreover, for the flat plug board A and the plug board B, the distance P between them can be directly obtained according to the scale value difference. Beneficial effects

[0016] Plug plates A and B and corresponding slots are set. By inserting plug plates A and B into corresponding slots, the maximum spacing between plug plates A and B can be changed. The maximum spacing is regarded as the inner diameter of the on-site pipeline. Then the defects on the surface G are imaged by the X-ray machine, and the current, voltage, exposure time and other parameters of the X-ray machine are adjusted until a clear image can be presented on the display screen. Then the corresponding current, voltage, exposure time and other parameters of the X-ray machine are recorded to detect defects on the on-site pipeline. This avoids the various sizes and specifications of pipelines in the laboratory. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view of the device in this embodiment when in use.

[0018] Figure 2 This is a top view of the device in use in other embodiments

[0019] 1. Bottom plate; 2. Vertical plate A; 3. Vertical plate B; 4. Slot A; 5. Slot B; 6. Slot C; 7. Slot D; 8. Slot E; 9. Plug-in board A; 10. Plug-in board B. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See Figure 1 The service pipeline nondestructive testing process verification simulator comprises a horizontally placed bottom plate 1, and two vertical plates are fixed to the upper surface wall of the bottom plate 1, and the two vertical plates are placed vertically. In this embodiment, the bottom plate 1 is a rectangular plate, and in a top view, the two vertical plates are symmetrically arranged about the midline of one side of the bottom plate 1. Let the direction of the midline be the X direction.

[0022] The two vertical plates are respectively denoted as vertical plate A2 and vertical plate B3.

[0023] A plurality of first strip grooves are provided on the surface wall of the vertical plate A2 on one side facing the vertical plate B3. The plurality of first strip grooves are sequentially recorded along the X direction as: first strip groove A, first strip groove B...first strip groove N. As viewed from one of the first strip grooves, the first strip groove vertically penetrates the vertical plate A2. As viewed from all the first strip grooves, the first strip grooves are distributed along the X direction, and the spacing between adjacent first strip grooves is a known preset value.

[0024] Similarly, a plurality of second strip-shaped grooves are formed on the side wall of the vertical plate B3 facing the vertical plate A2. The plurality of second strip-shaped grooves are sequentially denoted as: second strip-shaped groove A, second strip-shaped groove B... second strip-shaped groove N along the X direction. Looking at one of the second strip-shaped grooves, the second strip-shaped groove penetrates the vertical plate B3 vertically. Looking at all the second strip-shaped grooves, the second strip-shaped grooves are distributed along the X direction, and the distance between adjacent second strip-shaped grooves is a known preset value.

[0025] Taking the first strip-shaped groove A and the second strip-shaped groove A as a slot, taking the first strip-shaped groove B and the second strip-shaped groove B as another slot, and so on, a total of N slots are formed. Looking at the top view, the connection line between the first strip-shaped groove A and the second strip-shaped groove A is parallel to the Y direction, and the Y direction is perpendicular to the X direction.

[0026] As described above, the distance between every two adjacent slots is a known preset value.

[0027] It also includes two identical plug plates, and the two plug plates can be correspondingly inserted into any two slots. In this embodiment, looking at the top view, the shapes of the two plug plates are both arc-shaped plates, and in this embodiment, the arc is a minor arc of a circle. See Figure 2 , in other embodiments, the plug plate can also be a flat plate.

[0028] Looking at the top view, the two plug plates are respectively denoted as plug plate A9 and plug plate B10. The concave surface of the minor arc of plug plate A9 faces plug plate B10, and the concave surface of the minor arc of plug plate B10 faces plug plate A9. The materials of plug plate A9 and plug plate B10 are the same as those of the on-site pipeline; because the materials of the on-site pipeline are generally stainless steel and carbon steel, so in this embodiment, the materials of plug plate A9 and plug plate B10 are both stainless steel and carbon steel. The wall thicknesses of plug plate A9 and plug plate B10 are the same as those of the on-site pipeline, and the types depend on the wall thickness of the on-site pipeline. For example, the wall thicknesses H are: 2 cm, 4 cm, and 6 cm respectively.

[0029] In this embodiment, it is assumed that there are a total of 5 slots, which are sequentially denoted as slot A4, slot B5, slot C6, slot D7, and slot E8 along the X direction. When the plug board A9 is in slot A4 and the plug board B10 is in slot B5, the maximum distance P between the plug board A9 and the plug board B10 is 5 cm; when the plug board A9 is in slot A4 and the plug board B10 is in slot C6, the maximum distance P between the plug board A9 and the plug board B10 is 8 cm; when the plug board A9 is in slot A4 and the plug board B10 is in slot D7, the maximum distance P between the plug board A9 and the plug board B10 is 10 cm; when the plug board A9 is in slot A4 and the plug board B10 is in slot E8, the maximum distance P between the plug board A9 and the plug board B10 is 12 cm. In other embodiments, since both the plug board A9 and the plug board B10 are flat plates, the distance between the two is a fixed value, both being P. Keep the above P consistent with the inner diameter of the on-site pipeline. In other words, the maximum distance P between the plug board A9 and the plug board B10 represents the actual inner diameter of the on-site pipeline, that is, P is equal to the inner diameter of the on-site pipeline.

[0030] There are defects on the plug board A9 or the plug board B10, and the defects can be holes or cracks. Looking from the top view, assuming the defect is on the plug board A9, denote the vertical plane where the axis of symmetry of the plug board A9 is located as G, then the defect is located on the plane G. If both the plug board A9 and the plug board B10 are flat plates, the defect can be located on the vertical plane R, and the plane R is parallel to the X direction.

[0031] Let the cavity formed by the plug board A9, the plug board B10, the vertical plate A2, the vertical plate B3, and the bottom plate 1 be cavity Z; the upper part of the cavity Z is an open mouth. In this embodiment, from the upper part of the cavity Z, a medium filling bag is inserted into the cavity Z; the medium filling bag is a thin film plastic bag. The medium filling bag is used to fill experimental gas or liquid medium, and the experimental gas or liquid medium is the same as the gas or liquid medium in the on-site pipeline. In other embodiments, if the medium in the on-site pipeline is a liquid medium, the bottom of the cavity Z can also be directly sealed, and liquid medium can be injected into the cavity Z, and the medium filling bag can be discarded. In this embodiment, after the medium filling bag is filled with experimental gas or liquid medium, it expands, and the outer wall of the medium filling bag fits against the inner wall of the cavity Z.

[0032] Scale lines are provided on the upper surfaces of both the vertical plate A2 and the vertical plate B3, and the scale lines are arranged along the X direction.

[0033] Although the difference in the scale values at the ends of the plug board A9 and the plug board B10 is less than the maximum distance P between the plug board A9 and the plug board B10, the value of the maximum distance P between the two can be judged based on the scale values at the ends of the plug board A9 and the plug board B10.

[0034] For example, if the scale difference at the ends of the plug board A9 and the plug board B10 is 3 cm, it indicates that the maximum distance P between the plug board A9 and the plug board B10 is 5 cm. If the scale difference at the ends of the plug board A9 and the plug board B10 is 8 cm, it indicates that the maximum distance P between the plug board A9 and the plug board B10 is 10 cm. If the scale difference at the ends of the plug board A9 and the plug board B10 is 10 cm, it indicates that the maximum distance P between the plug board A9 and the plug board B10 is 12 cm. And so on. There is no need to measure the maximum distance P between the plug board A9 and the plug board B10 every time. The maximum distance P can be indirectly obtained only by relying on the scale difference at the ends of the plug board A9 and the plug board B10.

[0035] Verification process:

[0036] S1: Select the plug board A9 and the plug board B10 with appropriate wall thickness and material, and insert the plug board A9 and the plug board B10 into the corresponding slots according to the actual inner diameter of the on-site pipeline.

[0037] Specifically, for example, the inner diameter of the on-site pipeline is 5 cm, the wall thickness is 2 cm, and the material is stainless steel. Then select the stainless steel plug board A9 and the stainless steel plug board B10 with a wall thickness of 2 cm; insert the plug board A9 and the plug board B10 into the slots A4 and B5 respectively. At this time, the maximum distance P between the plug board A9 and the plug board B10 is 5 cm.

[0038] S2: Install the medium filling bag into the cavity Z from above the cavity Z, and inflate or fill it with liquid medium. The gas or liquid medium in the medium filling bag is the same as the gas or liquid medium in the actual on-site pipeline. After the medium filling bag is inflated and expanded, its outer wall fits the inner wall of the cavity Z. The error caused by the thickness of the medium filling bag is ignored.

[0039] If the medium in the on-site pipeline is a liquid medium, directly inject the corresponding liquid medium into the cavity Z.

[0040] S3: Figure 1 Look, the ray machine is located on the left side of the plug board A along the X direction, and the display screen is located on the right side of the plug board B along the X direction. Turn on the ray machine. The ray machine emits X-rays and passes through the plug board A and the plug board B in sequence, and is exposed on the display screen.

[0041] S4: Continuously adjust the parameters such as the current, voltage, and exposure time of the ray machine to make the defect imaging on the plug board A on the display screen clear. Record the parameters such as the current, voltage, and exposure time of the ray machine when the defect imaging is clear.

[0042] S5: When using the ray machine to detect the pipeline on-site, detect the pipeline of the corresponding specification with the parameters of the current, voltage, and exposure time when the clear imaging is recorded in S4, and the operation is very convenient.

[0043] Inspired by the above-described ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. Service pipeline non-destructive testing process verification simulator, characterized in that It includes a bottom plate, and two vertical plates are fixedly arranged on the upper surface of the bottom plate, and the two vertical plates are symmetrically arranged; a plurality of slots are commonly formed in the two vertical plates. When viewed from a top view, the plurality of slots are arranged in the X direction, and the symmetry axis of the two vertical plates is parallel to the X direction; It further includes a plug plate A and a plug plate B with the same shape. Both the plug plate A and the plug plate B can be respectively inserted into one of the slots; there are various wall thicknesses and materials for the plug plate A and the plug plate B; the wall thicknesses and materials of the plug plate A and the plug plate B are respectively consistent with the wall thicknesses and materials of the on-site pipeline; Let the cavity formed by the plug plate A, the plug plate B, the two vertical plates and the bottom plate be cavity Z; a medium filling bag is arranged in the cavity Z, and the medium filling bag can be inflated or filled with liquid to expand and fit the inner wall of the cavity Z. There are defects on the plug plate A or the plug plate B, and the positions and shapes of the defects are known.

2. The non-destructive testing process verification simulator for in-service pipelines according to claim 1, characterized in that The plug plate A and the plug plate B are arc-shaped plates, and the shape of the arc-shaped plate is a minor arc of a circle; when the plug plate A and the plug plate B are respectively in different slots, the maximum distance between the two arc-shaped plates is P, and P is the inner diameter of the on-site pipeline.

3. The non-destructive testing process verification simulator for in-service pipelines according to claim 1, characterized in that The plug plate A and the plug plate B are flat plates. When the plug plate A and the plug plate B are respectively in different slots, the distance between the two flat plates is P, and P is the inner diameter of the on-site pipeline.

4. The non-destructive testing process verification simulator for in-service pipelines according to claim 2, wherein Let the vertical plane where the symmetry axis of the plug plate A or the plug plate B is located be plane G, and the defect is located on the plane G.

5. The non-destructive testing process verification simulator for in-service pipelines according to claim 2 or 3, characterized in that, The P includes 5 cm, 8 cm, 10 cm or 12 cm.

6. The non-destructive testing process verification simulator for in-service pipelines according to claim 2, characterized in that Scale lines are arranged on the upper surfaces of the two vertical plates, and the scale lines are arranged in the X direction.

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