Positioning device for bending test of pipeline system

Abstract

The utility model discloses a bending test positioning device for a pipeline system, and relates to the technical field of pipeline positioning. The pipeline system bending test positioning device comprises an equipment frame, a plurality of supporting plates are fixed to the front end of the upper portion of the equipment frame, a plurality of fixing plates are fixed to the rear end of the upper portion of the equipment frame, a sample explorator is fixed to one face of each supporting plate through a plurality of bolts, and a sample lower clamp is arranged at the lower end of the sample explorator. A bearing seat is arranged on the fixing plate, a rotating rod is arranged on the inner ring of the bearing seat, a screw is connected to the end, close to the supporting plate, of the rotating rod, a threaded pipe is arranged on the outer side of the screw in a threaded mode, and the end, away from the bearing seat, of the threaded pipe penetrates through the supporting plate and is connected with an upper sample clamp, so that the upper end of the pipeline is fixed conveniently; and the sample upper clamp is driven to move, so that the purpose of bending and positioning the pipeline is achieved, and subsequent tests are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline positioning, and particularly relates to a pipeline system bending test positioning device. Background Technique

[0002] Cross-linked polyethylene (PE-X) pipeline products for cold and hot water are often used as cold and hot pipeline systems in buildings, including industrial and civil cold and hot water, drinking water, and heating systems. With people's yearning for a better life, in recent years, in domestic home decoration, floor heating pipes using PE-X have gradually become popular.

[0003] In the cross-linked polyethylene pipeline system, especially during the construction and paving of a pipe and fitting system with mechanical connection, when passing through a corner construction part, due to the occurrence of transverse stress at the connection between the pipe and the fitting, quality problems such as rupture or leakage are likely to occur. Therefore, before the cross-linked polyethylene pipeline is put into use, a hydrostatic testing machine is needed to conduct a bending test on the cross-linked polyethylene pipeline. This test refers to continuously applying internal pressure to the pipeline while bending the pipeline at a certain curvature to determine whether there is rupture or leakage at the connection part of the pipe and fitting, so as to judge whether the pipeline meets the usage requirements.

[0004] Currently, after investigation, there is no ready-made device on the market for bending and positioning pipelines, which cannot meet the test requirements and is not conducive to the smooth implementation of the bending test of cross-linked polyethylene pipelines.

[0005] In view of the above problems, we propose a pipeline system bending test positioning device. Content of the Utility Model

[0006] Technical Solution

[0007] To solve the above technical problems, the utility model provides such a pipeline system bending test positioning device, which includes an equipment frame. A plurality of support plates are fixed at the front end of the upper part of the equipment frame, and a plurality of fixing plates are fixed at the rear end of the upper part of the equipment frame. One side of the support plate away from the fixing plate is fixed with a specimen mold by a plurality of bolts. An arc-shaped groove is arranged on the side of the specimen mold away from the support plate. A specimen lower clamp is arranged at the lower end of the specimen mold. A bearing seat is arranged on the fixing plate, and a rotating rod is arranged inside the inner ring of the bearing seat. One end of the rotating rod close to the support plate is connected with a screw rod. A threaded pipe is arranged on the outer side of the screw rod in a threaded manner. A through hole is arranged through the support plate, and one end of the threaded pipe away from the bearing seat passes through the through hole and is connected with a specimen upper clamp.

[0008] The specimen lower clamp includes a fixed seat plate and a lower clamping block. The fixed seat plate is fixed at the lower end of the specimen mold. The lower clamping block is movably arranged on one side of the fixed seat plate and cooperates with the fixed seat plate. A plurality of locking bolts are arranged between the lower clamping block and the fixed seat plate.

[0009] The upper fixture for the specimen includes a movable seat plate, a connecting rod, and an upper clamping block. One end of the connecting rod is hinged to the end of the threaded pipe, and the other end is hinged to the movable seat plate. The upper clamping block is movably arranged on one side of the movable seat plate and cooperates with the movable seat plate. A number of locking bolts are arranged between the upper clamping block and the movable seat plate.

[0010] A slide rail is fixed between the upper sides of the support plate and the fixed plate by bolts. A slider is slidably arranged at the bottom of the slide rail, and the lower end of the slider is fixedly connected to the outer wall of the threaded pipe.

[0011] A handwheel is arranged on one side of the fixed plate away from the support plate. The handwheel is fixedly connected to one end of the rotating rod away from the screw rod. A number of rubber pads are arranged at the bottom of the equipment frame.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] The lower fixture for the specimen of the present utility model facilitates the fixation of the lower end of the pipeline to be tested. Combined with the upper fixture for the specimen, it is convenient to fix the upper end of the pipeline.

[0014] Meanwhile, under the action of the handwheel, combined with the rotating rod and the bearing seat, it is convenient to adjust the rotation of the screw rod. Under the thread fit between the screw rod and the threaded pipe, it is convenient to adjust the movement of the threaded pipe along the direction of the screw rod, thereby pulling the upper fixture for the specimen closer to the support plate, and then driving the fixed upper end of the pipeline closer to the support plate. Combined with the arc-shaped groove on the surface of the specimen mold, it is convenient to bend the pipeline according to a certain curvature and stabilize it in the bent state, facilitating subsequent further testing.

[0015] Meanwhile, multiple sets of specimen molds are provided, which is convenient to bend and position multiple pipelines with different diameters at the same time, effectively ensuring the subsequent test efficiency and facilitating use. The specimen mold and the arc-shaped groove on its surface are convenient to quickly pull the pipeline to be tested to the standard bending radius. Combined with the upper fixture for the specimen and the lower fixture for the specimen, the pipeline is not easy to loosen, safe and reliable, and the overall structure of the device is simple, easy to operate, with low noise during use, and can be used for a long time.

[0016] Among them, the sliding fit between the slider and the slide rail effectively plays a role in limiting and guiding the threaded pipe, ensuring the stability of the threaded pipe moving along the direction of the screw rod, and thus ensuring the stability of the process of pulling the pipeline to bend. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 For Figure 1Schematic diagram of the enlarged structure at A in the [diagram name];

[0019] Figure 3 Schematic diagram of the structure in the working state of the present utility model;

[0020] Figure 4 is Figure 3 Schematic diagram of the enlarged structure at B in the [diagram name];

[0021] Figure 5 is Figure 3 Schematic diagram of the enlarged structure at C in the [diagram name];

[0022] Figure 6 is Figure 3 side view of [[object]];

[0023] Figure 7 is Figure 3 schematic diagram of the structure from another perspective;

[0024] Figure 8 is Figure 7 Schematic diagram of the enlarged structure at D in the [diagram name];

[0025] Figure 9 is Figure 7 Schematic diagram of the enlarged structure at E in the [diagram name];

[0026] Figure 10 Schematic diagram of the process of pulling the pipeline towards bending when the present utility model is in use.

[0027] The labels in the attached drawings are: 1, equipment frame; 2, support plate; 3, fixing plate; 4, specimen mold; 5, bearing seat; 6, screw; 7, threaded pipe; 8, fixed seat plate; 9, lower clamp block; 10, movable seat plate; 11, connecting rod; 12, upper clamp block; 13, slide rail; 14, slider; 15, handwheel; 16, rubber pad. Detailed implementation manners

[0028] This detailed implementation manner is a positioning device for the bending test of a pipeline system. As Figures 1-10 shown, this positioning device for the bending test of a pipeline system includes an equipment frame 1. A plurality of support plates 2 are fixed at the front end of the upper part of the equipment frame 1, and a plurality of fixing plates 3 are fixed at the rear end of the upper part of the equipment frame 1. One side of the support plate 2 away from the fixing plate 3 is fixed with a specimen mold 4 through a plurality of bolts. An arc-shaped groove is provided on the side of the specimen mold 4 away from the support plate 2. A specimen lower fixture is provided at the lower end of the specimen mold 4. A bearing seat 5 is provided on the fixing plate 3. A rotating rod is provided inside the inner ring of the bearing seat 5. One end of the rotating rod close to the support plate 2 is connected with a screw 6. A threaded pipe 7 is threadedly arranged on the outer side of the screw 6. A through hole is provided through the support plate 2. One end of the threaded pipe 7 away from the bearing seat 5 passes through the through hole and is connected with a specimen upper fixture.

[0029] The lower fixture of the specimen facilitates the fixation of the lower end of the pipeline to be tested. In combination with the upper fixture of the specimen, it facilitates the fixation of the upper end of the pipeline. At the same time, under the threaded fit of the screw rod 6 and the threaded pipe 7, it is convenient to adjust the movement of the threaded pipe 7 along the direction of the screw rod 6, thereby pulling the upper fixture of the specimen closer to the support plate 2, and then driving the fixed upper end of the pipeline closer to the support plate 2. In combination with the arc-shaped groove on the surface of the specimen mold 4, it is convenient to bend the pipeline according to a certain curvature and stabilize it in the bent state, facilitating subsequent further testing.

[0030] The lower fixture of the specimen includes a fixed seat plate 8 and a lower clamping block 9. The fixed seat plate 8 is fixed at the lower end of the specimen mold 4. The lower clamping block 9 is movably arranged on one side of the fixed seat plate 8 and cooperates with the fixed seat plate 8. A number of locking bolts are arranged between the lower clamping block 9 and the fixed seat plate 8. Through the locking bolts, it is convenient to fix the lower clamping block 9 and the fixed seat plate 8 together to achieve the purpose of fixing the lower end of the pipeline.

[0031] The upper fixture of the specimen includes a movable seat plate 10, a connecting rod 11 and an upper clamping block 12. One end of the connecting rod 11 is hinged to the end of the threaded pipe 7, and the other end is hinged to the movable seat plate 10. The upper clamping block 12 is movably arranged on one side of the movable seat plate 10 and cooperates with the movable seat plate 10. A number of locking bolts are arranged between the upper clamping block 12 and the movable seat plate 10. Through the locking bolts, it is convenient to fix the upper clamping block 12 and the movable seat plate 10 together to achieve the purpose of fixing the upper end of the pipeline. Among them, the two ends of the connecting rod 11 are hinged to the movable seat plate 10 and the threaded pipe 7, which is convenient to pull the upper end of the pipeline closer to the support plate 2 during the process of adjusting the movement of the threaded pipe 7 to achieve the purpose of bending the pipeline.

[0032] On the upper side between the support plate 2 and the fixed plate 3, a slide rail 13 is fixed by bolts. A slider 14 is slidably arranged at the bottom of the slide rail 13. The lower end of the slider 14 is fixedly connected to the outer wall of the threaded pipe 7. Through the sliding fit of the slider 14 and the slide rail 13, it effectively plays a role in limiting and guiding the threaded pipe 7, ensuring the stability of the threaded pipe 7 when moving along the direction of the screw rod 6, and thus ensuring the stability of the process of pulling the pipeline to bend.

[0033] On one side of the fixed plate 3 away from the support plate 2, a handwheel 15 is arranged. The handwheel 15 is fixedly connected to the end of the rotating rod away from the screw rod 6. A number of rubber pads 16 are arranged at the bottom of the equipment frame 1, increasing the friction between the bottom of the device and the ground and ensuring the overall stability of the device.

[0034] Embodiment:

[0035] When in use, first cut the pipe according to requirements and connect the corresponding pipe fittings by means of hot melting or mechanical connection, ensure that the free length of the pipe between the pipe fittings is ten times the nominal outer diameter of the pipe, and seal both ends of the pipe with a sealing fixture;

[0036] When bending and positioning the pipeline, first place the lower end of the pipeline between the fixed seat plate 8 and the lower clamping block 9, and make the lower clamping block 9 approach the fixed seat plate 8 through the locking bolt to clamp and fix the lower end of the pipeline;

[0037] Secondly, rotate the handwheel 15. Under the action of the rotating rod and the bearing seat 5, drive the screw rod 6 to rotate. Combining the thread fit of the screw rod 6 and the threaded pipe 7, and the sliding fit of the slider 14 and the slide rail 13, drive the threaded pipe 7 to move stably away from the fixed plate 3, and then drive the movable seat plate 10 to move to a suitable position, and adjust the upper end of the pipeline to be placed between the movable seat plate 10 and the upper clamping block 12, and fix the upper clamping block 12 and the movable seat plate 10 together through the locking bolt to clamp and fix the upper end of the pipeline;

[0038] Secondly, connect the external pressure pipeline to the lower end of the pipeline, fill the pipeline with water, exhaust through the exhaust screw, and then seal;

[0039] Then rotate the handwheel 15 in the reverse direction to drive the screw rod 6 to rotate in the reverse direction. Under the combined action of the threaded pipe 7, the connecting rod 11, the slide rail 13 and the slider 14, pull the movable seat plate 10 to move towards the support plate 2, and then drive the upper end of the pipeline to approach the support plate 2. Combining the specimen mold 4 and the arc-shaped groove on its surface, the purpose of bending and positioning the pipeline is achieved;

[0040] Finally, according to the test requirements, apply a hydrostatic pressure to the pipeline with the existing hydrostatic testing machine and observe whether there is leakage.

[0041] It should be further noted that the installation structure, connection method or setting method of each component in the present utility model are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented;

[0042] Among them, self-locking universal wheels can be installed at the bottom of the equipment frame 1 according to the actual use situation for the movement of the device.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor limit the present utility model to the specific implementation manners described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of the present utility model, so that those skilled in the art in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A pipe system bending test positioning device, comprising a device frame (1), characterized in that: A plurality of support plates (2) are fixed to the front end of the upper part of the equipment frame (1), and a plurality of fixed plates (3) are fixed to the rear end of the upper part of the equipment frame (1). A sample support mold (4) is fixed to a side of the support plate (2) away from the fixed plate (3) by a plurality of bolts. An arc-shaped groove is provided on the side of the sample support mold (4) away from the support plate (2). A sample lower clamp is provided at the lower end of the sample support mold (4). A bearing seat (5) is provided on the fixed plate (3), and a rotating rod is provided on the inner ring of the bearing seat (5). A screw rod (6) is connected to the end of the rotating rod close to the support plate (2), and a threaded tube (7) is provided on the outer thread of the screw rod (6). A through hole is passed through the support plate (2), and an end of the threaded tube (7) away from the bearing seat (5) passes through the through hole and is connected to the sample upper clamp.

2. A piping system bending test positioning device according to claim 1, characterized in that: The specimen lower clamp comprises a fixed seat plate (8) and a lower clamp block (9); the fixed seat plate (8) is fixed to the lower end of the specimen support mold (4); the lower clamp block (9) is movably arranged on one side of the fixed seat plate (8) and cooperates with the fixed seat plate (8); and a plurality of locking bolts are arranged between the lower clamp block (9) and the fixed seat plate (8).

3. A piping system bending test positioning device according to claim 2, characterized in that: The sample upper clamp comprises a movable seat plate (10), a connecting rod (11) and an upper clamping block (12); one end of the connecting rod (11) is hinged to the end of the threaded tube (7), and the other end is hinged to the movable seat plate (10); the upper clamping block (12) is movably arranged on one side of the movable seat plate (10) and cooperates with the movable seat plate (10); a plurality of locking bolts are arranged between the upper clamping block (12) and the movable seat plate (10).

4. A piping system bending test positioning device according to claim 3, characterized in that: A slide rail (13) is fixed on the upper side between the support plate (2) and the fixed plate (3) by bolts, a slider (14) is slidably arranged at the bottom of the slide rail (13), and the lower end of the slider (14) is fixedly connected to the outer wall of the threaded tube (7).

5. A piping system bending test positioning device according to claim 4, characterized in that: A hand wheel (15) is provided on one side of the fixed plate (3) away from the support plate (2), and the hand wheel (15) is fixedly connected to one end of the rotating rod away from the screw rod (6). A plurality of rubber pads (16) are provided at the bottom of the equipment frame (1).

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