Pipeline testing device for hydraulic bursting test
By using a fixed connection structure of end caps and flanges in the pipeline testing device, the problem of inaccurate measurement results in the prior art is solved, ensuring that the test is performed in the defect area, thus improving the accuracy and reliability of the test.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-03-06
AI Technical Summary
The measurement accuracy of existing pipeline testing devices is low, especially when the welding quality is low. They are prone to breakage at the end cap rather than in the defect area, which affects the accuracy of the test results.
A sealing mechanism is adopted, which involves setting end caps and flanges at both ends of the test pipeline and fixing them together with bolts. This ensures that water pressure is transmitted to the flanges, thereby preventing the end caps from collapsing due to poor welding quality and ensuring that the test is performed in the defective area.
This improved the accuracy of test results, ensuring that each experiment was conducted by bursting the defective area of the pipeline, thus guaranteeing the reliability and accuracy of the test.
Smart Images
Figure CN223977011U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline ultimate bearing capacity prediction, and in particular to a pipeline testing device for water pressure burst testing. Background Technology
[0002] The assessment of pipeline strength after corrosion has always been a hot research topic, especially for pipelines used in seawater. With increasing age, the inner surface of seawater pipelines develops metal loss defects due to seawater erosion. These defects reduce the load-bearing capacity of seawater pipelines, severely impacting equipment reliability and safety. Pipeline rupture is caused by a rapid increase in internal pressure, exceeding the pipeline's load-bearing capacity in areas with corrosion, cracks, or pinholes. Therefore, we need to test different pipelines with defective areas to measure the maximum water pressure that various pipelines can withstand under these defective conditions.
[0003] Existing pipeline testing devices typically involve welding end caps to both ends of a test pipeline, introducing water into one end and applying water pressure until the pipeline collapses, then recording the water pressure at that point. However, the sealing effect of this method is highly dependent on the welding quality. Under high pressure, poor welding quality may cause the pipeline to collapse at the end cap weld instead of in the defective area, thus affecting the accuracy of the measurement results. Utility Model Content
[0004] This utility model provides a pipeline testing device for hydraulic burst testing, which solves the problem of low accuracy of measurement results in the prior art. The technical solution is as follows:
[0005] A pipeline testing device for hydraulic burst testing includes: a test pipeline and a sealing mechanism.
[0006] Two sealing mechanisms are provided, one at each end of the test pipeline. Each sealing mechanism includes an end cap, a flange, and bolts. The end cap is located at the end of the test pipeline, and the flange is fixed to the test pipeline. The flange has flange holes along its circumferential edge, and the end cap has mounting holes that match the flange holes. The bolts pass through the flange holes and the mounting holes. One of the end caps has a water injection hole that is connected to an external water source.
[0007] Optionally, the sealing mechanism further includes a limiting ring, which is disposed on the side of the flange near the end cap and is fixed to the test pipeline.
[0008] Optionally, the limiting ring is a variable diameter ring structure, with the diameter of the limiting ring near the flange being smaller than the diameter of the side near the end cover, and a limiting groove matching the limiting ring being provided on the side of the flange near the limiting ring.
[0009] Optionally, it also includes a base and a fixing ring. The base has a rectangular structure, and two fixing rings are arranged vertically at intervals along the length of the base. The fixing rings are sleeved on the outside of the test pipeline. The fixing rings are formed by the engagement of a first semicircular ring and a second semicircular ring, and the distance between the first semicircular ring and the second semicircular ring is adjustable.
[0010] Optionally, a first slide rod is provided at the bottom of the first semicircular ring, and a second slide rod is provided at the bottom of the second semicircular ring. The first slide rod and the second slide rod are arranged along the length direction of the base and spaced apart along the width direction of the base. The first slide rod is slidably disposed on the base, and a cylinder is provided at one end of the first slide rod. The cylinder is configured to drive the first slide rod to move closer to or away from the second slide rod.
[0011] Optionally, a gear is provided between the first slide rod and the second slide rod, the gear being rotatably mounted on the base, and both the first slide rod and the second slide rod are provided with racks that match the gear, the racks being perpendicular to the first slide rod and the second slide rod.
[0012] Optionally, it also includes a water inlet pipe, a pressure gauge, a pressure sensor, an electric pressure testing pump, a remote controller, and a dynamic signal testing and analysis instrument. One end of the water inlet pipe is connected to the water injection hole, and the other end is connected to the electric pressure testing pump. The remote controller is signal-connected to the electric pressure testing pump. The pressure gauge and the pressure sensor are located at the end of the water inlet pipe near the water injection hole, and the pressure sensor is signal-connected to the dynamic signal testing and analysis instrument.
[0013] Optionally, the system also includes a strain gauge and a video recorder, wherein the strain gauge is disposed on the test pipeline and is connected to the dynamic signal test analyzer, and the video recorder is positioned facing the test pipeline.
[0014] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:
[0015] This utility model provides a pipeline testing device for water pressure burst testing. An end cap is fixedly installed at the end of the test pipeline, and a flange is fixedly installed on the test pipeline. The flange and end cap are fixedly connected by bolts. During water injection and pressure testing of the test pipeline, the water pressure on the end cap is transmitted to the flange through the bolts, allowing both the flange and end cap to bear the water pressure. This prevents the end cap from collapsing due to poor welding quality during the test, ensuring that the burst occurs in the defective area of the test pipeline in each experiment. This guarantees the accuracy of the test results and effectively solves the problem of low measurement accuracy in existing technologies. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the cooperation between the test pipeline and the sealing mechanism provided in this embodiment of the utility model;
[0018] Figure 2 This is a schematic diagram of the sealing mechanism provided in this embodiment of the utility model;
[0019] Figure 3 This is a front view schematic diagram of the end cap provided in an embodiment of this utility model;
[0020] Figure 4 This is a front view schematic diagram of the flange provided in an embodiment of this utility model;
[0021] Figure 5 This is a schematic side view cross-sectional view of the flange provided in an embodiment of this utility model;
[0022] Figure 6 This is a side cross-sectional view of the limiting ring provided in an embodiment of the present invention;
[0023] Figure 7 This is a schematic diagram of the internal structure of the base provided in an embodiment of this utility model;
[0024] Figure 8 This is a schematic diagram of the cooperation between the first slide bar and the second slide bar provided in this embodiment of the utility model;
[0025] Figure 9 This is a schematic diagram of the overall structure of the testing device provided in this embodiment of the utility model.
[0026] In the diagram: 1-Test pipeline; 2-Sealing mechanism; 21-End cap; 211-Mounting hole; 212-Water injection hole; 22-Flange; 221-Flange hole; 222-Limiting groove; 23-Bolt; 24-Limiting ring; 3-Base; 4-Fixing ring; 41-First semi-circular ring; 42-Second semi-circular ring; 51-First sliding rod; 52-Second sliding rod; 6-Cylinder; 7-Gear; 8-Rack and pinion; 91-Water inlet pipe; 92-Pressure gauge; 93-Pressure sensor; 94-Electric pressure testing pump; 95-Remote controller; 96-Dynamic signal testing and analysis instrument; 97-Strain gauge; 98-Video recorder. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0028] Figure 1 This is a schematic diagram of the cooperation between the test pipeline and the sealing mechanism provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the sealing mechanism provided in this embodiment of the utility model; Figure 3 This is a front view schematic diagram of the end cap provided in an embodiment of this utility model; Figure 4 This is a front view schematic diagram of the flange provided in an embodiment of this utility model; Figure 5 This is a schematic side view cross-sectional view of the flange provided in an embodiment of this utility model; Figure 6 This is a side cross-sectional view of the limiting ring provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of the base provided in an embodiment of this utility model; Figure 8 This is a schematic diagram of the cooperation between the first slide bar and the second slide bar provided in this embodiment of the utility model; Figure 9 This is a schematic diagram of the overall structure of the testing device provided in this embodiment of the utility model. Figures 1 to 9 The pipeline testing device shown includes a test pipeline 1 and a sealing mechanism 2. Two sealing mechanisms 2 are provided, respectively located at both ends of the test pipeline 1. Each sealing mechanism 2 includes an end cap 21, a flange 22, and bolts 23. The end cap 21 is located at the end of the test pipeline 1, and the flange 22 is fixed to the test pipeline 1. The flange 22 has a flange hole 221 along its circumferential edge. The end cap 21 has a mounting hole 211 that matches the flange hole 221. The bolts 23 pass through the flange hole 221 and the mounting hole 211. One of the end caps 21 has a water injection hole 212 that is connected to an external water source.
[0029] For example, in this embodiment of the present invention, the test pipeline 1 has a defect area, which includes, but is not limited to, pitting defects, cracks, and damage. First, weld two flanges 22 to the test pipeline 1 near both ends. Then, weld two end caps 21 to both ends of the test pipeline 1. Secure the end caps 21 and flanges 22 by passing bolts 23 through flange holes 221 and mounting holes 211. When water is injected into the test pipeline 1 through the water injection hole 212, the water exerts a thrust on the end caps 21, attempting to separate them from the test pipeline 1. However, since the end caps 21 and flanges 22 are connected by bolts 23, the thrust on the end caps 21 is shared with the flanges 22, preventing the end caps 21 from separating from the test pipeline 1. This ensures that the end caps 21 are not only fixed to the test pipeline by welding but also subjected to a tensile force from the flanges 22 opposite to the thrust of the water pressure. This makes the end caps 21 more firmly fixed to the test pipeline 1, creating a closed space inside the test pipeline 1. When the water pressure is increased, the test pipeline 1 will only burst from the defect area, thus ensuring the accuracy of the test results.
[0030] This utility model provides a pipeline testing device for water pressure burst testing. An end cap 21 is fixedly installed at the end of the test pipeline 1, and a flange 22 is fixedly installed on the test pipeline 1. The flange 22 and the end cap 21 are fixedly connected by bolts 23. When the test pipeline 1 is pressurized with water, the water pressure on the end cap 21 can be transmitted to the flange 22 through the bolts 23, so that the flange 22 and the end cap 21 bear the water pressure together. This prevents the end cap 21 from breaking off due to poor welding quality during the test. This ensures that the burst occurs in the defect area of the test pipeline 1 in each experiment, thereby ensuring the accuracy of the test results and effectively solving the problem of low measurement accuracy in the prior art.
[0031] Optionally, the sealing mechanism 2 also includes a limiting ring 24, which is disposed on the side of the flange 22 near the end cap 21 and is fixed to the test pipeline 1.
[0032] For example, in this embodiment of the present invention, the limiting ring 24 is welded to the test pipeline 1. When the end cap 21 is subjected to excessive water pressure, pulling the flange 22 toward the end cap 21, the limiting ring 24 can further block the movement of the flange 22, thereby preventing the end cap 21 and the flange 22 from detaching from the test pipeline 1 and improving the stability of the device.
[0033] Optionally, the limiting ring 24 is a variable diameter ring structure, with the diameter of the limiting ring 24 near the flange 22 being smaller than the diameter of the side near the end cover 21, and a limiting groove 222 matching the limiting ring 24 is provided on the side of the flange 22 near the limiting ring 24.
[0034] Exemplary, in embodiments of this utility model, such as Figure 5 and Figure 6 As shown, by setting the limiting ring 24 in this structure and cooperating with the limiting groove 222, the limiting ring 24 can restrict the movement of the flange 22 toward the end cover 21. Since the flange 22 and the limiting ring 24 are in contact with a conical surface, even if the flange 22 is subjected to tension and begins to move toward the end cover 21, the flange 22 will expand and deform due to the cooperation of the conical surface. This makes it more difficult for the flange 22 to move toward the end cover 21 as it moves closer to it, thereby further improving the stability of the device.
[0035] Optionally, it also includes a base 3 and a fixing ring 4. The base 3 has a rectangular structure. There are two fixing rings 4, which are arranged vertically at intervals along the length of the base 3. The fixing rings 4 are sleeved on the outside of the test pipeline 1. The fixing rings 4 are formed by the engagement of a first semicircular ring 41 and a second semicircular ring 42. The distance between the first semicircular ring 41 and the second semicircular ring 42 is adjustable.
[0036] For example, in this embodiment of the present invention, by setting the base 3 and the fixing ring 4, the test pipeline 1 can be easily fixed, preventing the test pipeline 1 from moving irregularly and causing damage to the environment in the event of an explosion, thereby improving the ease of operation of the device.
[0037] Optionally, a first slide rod 51 is provided at the bottom of the first semicircular ring 41, and a second slide rod 52 is provided at the bottom of the second semicircular ring 42. The first slide rod 51 and the second slide rod 52 are arranged along the length direction of the base 3 and spaced apart along the width direction of the base 3. The first slide rod 51 is slidably mounted on the base 3, and a cylinder 6 is provided at one end of the first slide rod 51. The cylinder 6 is configured to drive the first slide rod 51 to move closer to or away from the second slide rod 52.
[0038] Exemplary, in embodiments of this utility model, such as Figure 7As shown, the base 3 has an internal cavity, in which the first slide rod 51, the second slide rod 52, and the cylinder 6 are all housed, improving the overall neatness of the device while protecting the mechanism. In this embodiment, two fixing rings 4 are provided to provide stable support for the test pipeline 1. Each fixing ring 4 has a first semicircular ring 41 and a second semicircular ring 42. The two first semicircular rings 41 are fixed to the first slide rod 51, and the two second semicircular rings 42 are fixed to the second slide rod 52, allowing the first slide rod 51 to move closer to or further away from the second slide rod 52, thus manipulating the first semicircular rings 41 and 42 to engage or disengage. Cylinder 6 is a telescopic cylinder, perpendicularly positioned to the first slide rod 51. By extending cylinder 6, the first slide rod 51 is moved away from the second slide rod 52, thus separating the first semi-circular ring 41 and the second semi-circular ring 42. This facilitates the placement of the test tube 1 between the first and second semi-circular rings 41 and 42. Then, by retracting cylinder 6, the first and second semi-circular rings 41 and 42 are brought closer together and closed, forming a complete fixed ring 4. At this point, the fixed ring 4 is fixed to the outside of the test tube 1, ensuring the test tube is securely fixed to the base 3. This structure allows for easy operation of the first and second semi-circular rings 41 and 42 simply by controlling cylinder 6, significantly improving the device's ease of use.
[0039] Optionally, a gear 7 is provided between the first slide rod 51 and the second slide rod 52. The gear 7 is rotatably mounted on the base 3. Both the first slide rod 51 and the second slide rod 52 are provided with a rack 8 that matches the gear 7. The rack 8 is perpendicular to the first slide rod 51 and the second slide rod 52.
[0040] Exemplary, in embodiments of this utility model, such as Figure 8 As shown, gear 7 and rack 8 are also disposed in the cavity of base 3, with rack 8 horizontally disposed to reduce space occupation. Second slide bar 52 is also slidably disposed on base 3. When cylinder 6 drives first slide bar 51 to move closer to or away from second slide bar 52, gear 7 and rack 8 cooperate to allow first slide bar 51 and second slide bar 52 to move simultaneously and synchronously, moving closer or further away from each other. This structure improves the stability of the first semi-circular ring 41 and second semi-circular ring 42 when they engage or disengage, making their movement smoother and further enhancing the stability of the device.
[0041] Optionally, it also includes a water inlet pipe 91, a pressure gauge 92, a pressure sensor 93, an electric pressure testing pump 94, a remote controller 95, and a dynamic signal test analyzer 96. One end of the water inlet pipe 91 is connected to the water injection hole 212, and the other end is connected to the electric pressure testing pump 94. The remote controller 95 is signal-connected to the electric pressure testing pump 94. The pressure gauge 92 and the pressure sensor 93 are located at the end of the water inlet pipe 91 near the water injection hole 212. The pressure sensor 93 is signal-connected to the dynamic signal test analyzer 96.
[0042] Exemplary, in embodiments of this utility model, such as Figure 9 As shown, the electric pressure testing pump 94 draws water from the water source and delivers it to the test pipeline 1 through the water pipe 91 for pressurization. The electric pressure testing pump 94 can be remotely controlled by the remote controller 95. The pressure gauge 92 can be used to measure the water pressure applied to the test pipeline 1. The pressure sensor 93 can be used to measure the water pressure in another way and transmit the data to the dynamic signal test analyzer 96. The dynamic signal test analyzer 96 is then connected to an external computer system to analyze the collected pressure data and derive the pressure change pattern, etc.
[0043] Optionally, it also includes a strain gauge 97 and a video recorder 98. The strain gauge 97 is disposed on the test pipeline 1 and is connected to the dynamic signal test analyzer 96. The video recorder 98 is positioned facing the test pipeline 1.
[0044] Exemplary, in embodiments of this utility model, such as Figure 9 As shown, by installing strain gauges 97 and 6 on the test pipeline 1, the strain gauges 6 can monitor the deformation of the test pipeline 1 in real time, providing important data support for analyzing the material's performance under high pressure. The strain gauges 6 transmit the data to the dynamic signal test analyzer 96, which is then connected to an external computer system for analysis of the collected pressure data. Due to the inherent danger of this test, it is impossible to observe the changes during the explosion process on-site. By installing a video recorder 98, important data and phenomena during the experiment can be recorded, providing direct evidence for subsequent analysis and verification.
[0045] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0046] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A plumbing test device for hydrofracture testing, comprising: The utility model relates to a test pipeline (1) and plugging mechanism (2) are included, Two plugging mechanisms (2) are arranged at the two ends of the test pipeline (1) respectively, and the plugging mechanism (2) comprises an end cover (21), a flange (22) and a bolt (23), the end cover (21) is welded to the end of the test pipeline (1), the flange (22) is fixed on the test pipeline (1), the flange (22) is provided with a flange hole (221) along the circumferential edge, the end cover (21) is provided with a mounting hole (211) matched with the flange hole (221), the bolt (23) is arranged in the flange hole (221) and the mounting hole (211), one of the end cover (21) is provided with a water injection hole (212), and the water injection hole (212) is connected with an external water source. The plugging mechanism (2) further comprises a limiting ring (24), the limiting ring (24) is arranged on the side of the flange (22) close to the end cover (21), and the limiting ring (24) is fixed on the test pipeline (1).
2. A line testing device for hydro-blasting testing according to claim 1, characterized in that, The limiting ring (24) is a variable-diameter ring structure, the diameter of the side of the limiting ring (24) close to the flange (22) is smaller than the diameter of the side close to the end cover (21), and the side of the flange (22) close to the limiting ring (24) is provided with a limiting groove (222) matched with the limiting ring (24).
3. A line testing device for hydro-blasting tests according to claim 2, characterized in that The utility model further comprises a base (3) and a fixing ring (4), the base (3) is a rectangular structure, the fixing ring (4) is provided with two, and is vertically and spaced apart along the length direction of the base (3), the fixing ring (4) is arranged outside the test pipeline (1), the fixing ring (4) is formed by the first half ring (41) and the second half ring (42) being closed, and the interval of the first half ring (41) and the second half ring (42) is adjustable.
4. A line testing device for hydro-blasting testing according to claim 1, wherein, The first half ring (41) is provided with a first sliding rod (51) at the bottom, the second half ring (42) is provided with a second sliding rod (52) at the bottom, the first sliding rod (51) and the second sliding rod (52) are arranged along the length direction of the base (3) and are spaced apart along the width direction of the base (3), the first sliding rod (51) is slidably arranged on the base (3), one end of the first sliding rod (51) is provided with a pneumatic cylinder (6), and the pneumatic cylinder (6) is configured to drive the first sliding rod (51) to be close to or away from the second sliding rod (52).
5. A line testing device for hydro-blasting tests according to claim 4, characterized in that A gear (7) is arranged between the first sliding rod (51) and the second sliding rod (52), the gear (7) is rotatably arranged on the base (3), the first sliding rod (51) and the second sliding rod (52) are provided with a rack bar (8) matched with the gear (7), and the rack bar (8) is perpendicular to the first sliding rod (51) and the second sliding rod (52).
6. A line testing device for hydro-blasting tests according to claim 5, characterized in that 7. A line testing device for hydro-blasting testing according to claim 1, wherein, It also includes a water inlet pipe (91), a pressure gauge (92), a pressure sensor (93), an electric pressure pump (94), a remote controller (95) and a dynamic signal test analyzer (96), one end of the water inlet pipe (91) is connected with the water injection hole (212), the other end is connected with the electric pressure pump (94), the remote controller (95) is signal connected with the electric pressure pump (94), the pressure gauge (92) and the pressure sensor (93) are arranged at one end of the water inlet pipe (91) close to the water injection hole (212), the pressure sensor (93) is signal connected with the dynamic signal test analyzer (96).
8. A line testing device for hydro-blasting tests according to claim 7, characterized in that It also includes a strain gauge (97) and a video recorder (98), the strain gauge (97) is arranged on the test pipeline (1), the strain gauge (97) is signal connected with the dynamic signal test analyzer (96), the video recorder (98) is arranged towards the test pipeline (1).