Simple and convenient pressure test tool for welded pipeline

Abstract

The utility model relates to the technical field of welded pipeline testing, in particular to a simple and convenient welded pipeline pressure testing tool which comprises a pressure testing platform. The device further comprises a slope plate and a placement plate, an arc-shaped groove is formed in the upper end of the pressure test platform, two grooves which are opposite front and back are formed in the surface of the arc-shaped groove, plugging discs are symmetrically arranged at the left end and the right end of the surface of the arc-shaped groove in a sliding mode, and an extrusion mechanism for controlling the two plugging discs to move relatively is arranged on the pressure test platform. The clamping block is used for clamping and blocking a middle welded steel pipe; according to the utility model, the welded steel pipe is easily placed on the placing plate, and then the welded steel pipe is driven to roll into the arc-shaped groove on the pressure test platform by means of the slow overturning and lifting of the placing plate and the slope plate, so that the clamping and plugging work of the welded steel pipe is quickly prepared, a series of tedious operations such as the cooperation with a crane are avoided, and the working efficiency is improved. The work flow is shortened, the feeding operation is simplified, the welding steel pipe placing efficiency is greatly improved, time and labor are saved, and therefore the testing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of welded pipe testing technology, and in particular to a simple pressure testing fixture for welded pipes. Background Technology

[0002] Pipelines are essential tools in industry for transporting oil, natural gas, and other materials, enabling rapid material transfer. Due to the large lengths of pipelines, it is often impossible to manufacture pipelines of matching lengths during production. Therefore, multiple pipeline sections are frequently welded together during construction to form welded pipelines. To ensure the sealing, pressure resistance, and safety requirements of welded pipelines, pressure testing is required on the welded pipelines. The core purpose is to detect whether there are any quality problems such as leaks in the welded pipelines, ensuring that the pipelines can safely and reliably transport fluids during actual operation.

[0003] A patent application (CN221992951U) published on the Chinese Patent Website provides a simplified pressure testing fixture for welded pipes. The fixture includes a first and second blocking plate positioned opposite each other on a pressure testing platform. A first and second sealing gasket are respectively provided on the inner sides of the first and second blocking plates. The first or second blocking plate has a pressure testing hole that mates with a pressure testing nozzle. A clamping mechanism is provided on the outer sides of both the first and second blocking plates. This pressure testing fixture is reusable, reduces pressure testing procedures, simplifies operation, shortens the pressure testing cycle, reduces pressure testing costs, and improves pressure testing efficiency. It is suitable for pressure testing of large batches of welded pipes. However, like traditional testing methods, this device also has its shortcomings. The pressure testing platform is usually located at a high position, while the welded pipes being tested vary in size and weight. When the welded pipes are heavy, it is difficult to lift them as a whole. It is necessary to use steel wire ropes to tie the welded steel pipes and then use a crane to lift them and place them stably. It is also difficult to keep the welded pipes stable when placed, as they are prone to swaying. The whole process is relatively complicated, cumbersome, time-consuming, and labor-intensive, resulting in low testing efficiency and hindering production activities.

[0004] Therefore, since the pressure testing fixture in the aforementioned reference patent is similar to traditional testing devices, when the weight of the welded pipe is large, a series of operations are required with the help of a crane to place the welded steel pipe stably. The whole process is relatively complicated, cumbersome, time-consuming and labor-intensive, resulting in low testing efficiency and hindering production activities. Therefore, a simple pressure testing fixture that can quickly place the welded steel pipe can be designed. Utility Model Content

[0005] To overcome the problem that the pressure testing fixture in the reference patent is similar to traditional testing equipment, when there is a large weight of welded pipe, a series of operations are required with the help of a crane to place the welded steel pipe stably. The whole process is complicated, cumbersome, time-consuming and labor-intensive, resulting in low testing efficiency and hindering production activities.

[0006] The technical solution of this utility model is as follows: a simple pressure testing fixture for welded pipes, including a pressure testing platform; it also includes a ramp plate and a placement plate. The upper end of the pressure testing platform is provided with an arc-shaped groove, and the surface of the arc-shaped groove is provided with two opposing grooves. The left and right ends of the surface of the arc-shaped groove are symmetrically and slidably provided with sealing discs. The pressure testing platform is provided with a pressing mechanism to control the relative movement of the two sealing discs, which is used to clamp and seal the intermediate welded steel pipe. The front end of the pressure testing platform is symmetrically and fixedly connected with a support base. The two support bases are rotatably connected to a rotating base through a rotating shaft. The upper end of the rotating base is fixedly connected with an ramp plate. The front end of the ramp plate is fixedly connected with a placement plate. A second motor is fixedly installed on the right support base. The output shaft of the second motor is fixedly connected to the rotating shaft of the rotating base.

[0007] Preferably, the pressure testing welded pipe is lifted onto a lower placement plate, with the middle of the welded pipe roughly resting on the placement plate during placement. The second motor is started to drive the rotating seat to rotate, and the ramp plate and placement plate slowly flip together. When the ramp plate is raised to a horizontal position and slightly tilted backward, the welded steel pipe begins to slowly roll down, finally rolling into the arc-shaped groove on the pressure testing platform. Then, the two sealing discs are controlled by the extrusion mechanism to extrude and seal both sides of the welded steel pipe, and the pressure test begins.

[0008] Preferably, a baffle is fixedly connected to the upper front side of the placement plate, and friction grooves are formed on the upper surface of the ramp plate and the placement plate.

[0009] Preferably, transition blocks are fixedly connected to the inner sides of the middle of the two grooves, and an interceptor seat is fixedly connected to the upper middle part of the pressure testing platform and at the rear side. The surfaces of the two transition blocks and the interceptor seat are provided with curved surfaces that share the same curvature as the arc grooves.

[0010] Preferably, a rubber sealing ring is fixedly connected to one end of the two sealing discs that are relatively close to each other, and a connecting test pressure interface is opened through the middle of the right sealing disc and the rubber sealing ring.

[0011] Preferably, the extrusion mechanism includes a bidirectional screw, a moving block 1, and a motor 1; the bidirectional screw is rotatably connected in the front groove, and the two ends of the bidirectional screw are symmetrically threaded to the outer sides of the moving blocks 1, and the two moving blocks 1 are respectively fixedly connected to the bottom front side of the two sealing discs. The right end of the pressure testing platform is fixedly connected to the motor 1, and the output shaft of the motor 1 is fixedly connected to the bidirectional screw.

[0012] Preferably, the extrusion mechanism also includes a guide rod and a second movable block; the guide rod is fixedly connected in the rear groove, and the second movable blocks are symmetrically and movably arranged on the outer sides of both ends of the guide rod, and the two second movable blocks are respectively fixedly connected to the bottom rear side of the two sealing discs.

[0013] Preferably, a hollow seat conforming to the curved surface of the arc groove is fixedly connected to the lower side of the two sealing discs at their relatively far ends, and two inclined support beams are fixedly connected between the upper end of the hollow seat and the corresponding sealing disc.

[0014] The beneficial effects of this utility model are:

[0015] 1. This device, by setting up a pressure testing platform, rotating seat, inclined plate, and placement plate, allows workers to easily place the welded steel pipe on the placement plate first. Then, with the slow rotation and lifting of the placement plate and inclined plate, the welded steel pipe is driven to roll into the arc-shaped groove on the pressure testing platform, quickly preparing for the clamping and sealing of the welded steel pipe. This avoids a series of cumbersome operations such as using a crane, shortens the workflow, simplifies the material loading operation, greatly improves the efficiency of placing welded steel pipes, saves time and labor, and thus improves the efficiency of testing.

[0016] 2. The device, through the setting of sealing discs and the extrusion mechanism that controls the movement of the two sealing discs, has a large sealing disc area, which can adapt to the clamping and sealing of welded steel pipes of different diameters and lengths. It is convenient to use, simple to operate, and highly versatile, thus improving the testing efficiency of different types of welded steel pipes. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the present invention.

[0018] Figure 2 The diagram shown illustrates the connection structure between the ramp plate and the placement plate of this utility model. Figure 1 ;

[0019] Figure 3 The diagram shown illustrates the connection structure between the ramp plate and the placement plate of this utility model. Figure 2 ;

[0020] Figure 4 The diagram shown is a three-dimensional structural schematic of the pressure testing platform of this utility model;

[0021] Figure 5 The diagram shown is a three-dimensional structural schematic of the sealing disc of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Pressure testing platform; 2. Arc-shaped groove; 3. Groove; 4. Sealing plate; 501. Bidirectional screw; 502. Moving block one; 503. Motor one; 504. Guide rod; 505. Moving block two; 6. Support seat; 7. Rotating seat; 8. Inclined plate; 9. Placement plate; 10. Motor two; 11. Rubber sealing ring; 12. Pressure testing interface; 13. Baffle; 14. Friction groove; 15. Transition block; 16. Interception seat; 17. Hollow seat; 18. Inclined support beam. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5 This utility model provides an embodiment of a simple pressure testing fixture for welded pipes, including a pressure testing platform 1; it also includes a ramp plate 8 and a placement plate 9. The upper end of the pressure testing platform 1 has an arc-shaped groove 2, and the surface of the arc-shaped groove 2 has two opposing grooves 3. A sealing disc 4 is symmetrically slidably arranged at both ends of the surface of the arc-shaped groove 2. The pressure testing platform 1 is equipped with a pressing mechanism to control the relative movement of the two sealing discs 4, used to clamp and seal the intermediate welded steel pipe. A support base 6 is symmetrically fixedly connected to the middle of the front end of the pressure testing platform 1. A rotating base 7 is rotatably connected between the two support bases 6 via a rotating shaft. The upper end of the rotating base 7 is fixedly connected to the ramp plate 8. The front end of the 8 is fixedly connected to the placement plate 9, and the right support 6 is fixedly installed with the motor 10. The output shaft of the motor 10 is fixedly connected to the rotating shaft of the rotating seat 7. The pressure test welding pipe is lifted onto the lower placement plate 9. During the placement process, the middle of the welding pipe is kept roughly on the placement plate 9. The motor 10 is started to drive the rotating seat 7 to rotate. The ramp plate 8 and the placement plate 9 slowly flip together. When the ramp plate 8 is raised to a horizontal position and slightly tilted backward, the welding steel pipe begins to slowly roll down. Finally, it rolls down into the arc groove 2 on the pressure test platform 1. Then, the two sealing discs 4 are controlled by the extrusion mechanism to extrude and seal the two sides of the welding steel pipe, and the pressure test begins.

[0025] Please see Figures 1-3In this embodiment, a baffle 13 is fixedly connected to the upper front side of the placement plate 9. Friction grooves 14 are formed on the upper surfaces of the ramp plate 8 and the placement plate 9. The baffle 13 is used to block the front side of the placement plate 9 to prevent the placed welded steel pipe from falling from the front. The friction grooves 14 can increase the moving resistance of the welded steel pipe and prevent it from moving too fast. Transition blocks 15 are fixedly connected to the inner sides of the middle of the two grooves 3. An intercepting seat 16 is fixedly connected to the upper middle part of the pressure testing platform 1 and located at the rear side. The surfaces of the two transition blocks 15 and the intercepting seat 16 are formed with arc-shaped grooves 2. The curved surface with a common arc, the two transition blocks 15 keep the welded steel pipe rolling smoothly, the intercepting seat 16 blocks the welded steel pipe rolling into the arc groove 2 to prevent it from falling from the rear, the two sealing discs 4 are fixedly connected to the relatively close ends of the two sealing discs 4 with rubber sealing rings 11, and the middle of the right sealing disc 4 and the rubber sealing ring 11 is provided with a connecting test pressure interface 12. When the two sealing discs 4 clamp and seal the welded steel pipe, the rubber sealing ring 11 improves its sealing effect. Then, the test pressure interface 12 is connected to the external filling gas test equipment to conduct a sealing test.

[0026] Please see Figure 4 and Figure 5 In this embodiment, the extrusion mechanism includes a bidirectional screw 501, a first movable block 502, and a first motor 503. The bidirectional screw 501 is rotatably connected within the front groove 3. The two ends of the bidirectional screw 501 are symmetrically threaded with first movable blocks 502. The two first movable blocks 502 are fixedly connected to the bottom front sides of the two sealing discs 4. The right end of the pressure testing platform 1 is fixedly connected to the first motor 503, and the output shaft of the first motor 503 is fixedly connected to the bidirectional screw 501. Starting the first motor 503 drives the bidirectional screw 501 to rotate, causing the two first movable blocks 502 to move closer together, thereby controlling the two sealing discs 4 to move closer to each other, clamping and sealing the welded steel pipe. The extrusion mechanism also includes a guide rod 504 and a second movable block 505. A guide rod 504 is fixedly connected inside the side groove 3. Two movable blocks 505 are symmetrically and movably arranged on the outer sides of both ends of the guide rod 504. The two movable blocks 505 are fixedly connected to the bottom rear side of the two sealing discs 4 respectively. When the two sealing discs 4 move relative to each other, the two movable blocks 505 slide on the outer side of the guide rod 504, which improves its smooth guiding movement function. A hollow seat 17 that fits the curved surface of the arc groove 2 is fixedly connected to the lower side of the two sealing discs 4 that are relatively far apart. Two inclined support beams 18 are fixedly connected between the upper end of the hollow seat 17 and the corresponding sealing disc 4. The hollow seat 17 can slide smoothly in the arc groove 2. The connection strength between the hollow seat 17 and the sealing disc 4 is strengthened by the two inclined support beams 18, so that the entire surface of the sealing disc 4 can be well attached to the surface of the welded steel pipe.

[0027] During operation, the pressure testing welded pipe is lifted onto the lower placement plate 9, ensuring the middle of the welded pipe rests roughly on the placement plate 9. Motor 10 is started to rotate the rotating seat 7, causing the ramp plate 8 and placement plate 9 to slowly rotate together. When the ramp plate 8 is raised to a horizontal position and slightly tilted backward, the welded steel pipe begins to slowly roll down, finally landing in the arc-shaped groove 2 on the pressure testing platform 1. Blocked by the interceptor seat 16, it comes to a stable stop in the arc-shaped groove 2. Then, through the extrusion mechanism, motor 503 is started to rotate the bidirectional screw 501. The bidirectional screw 501 drives two moving blocks 502 to move closer together, coordinating with the two moving blocks 505 sliding on the outside of the guide rod 504. This controls the two sealing discs 4 to move closer together, with the rubber sealing ring 11 tightly adhering to the welded steel pipe, clamping and sealing it. The pressure testing interface 12 is then used to connect to an external gas-filled testing device for a sealing pressure test.

[0028] Through the above steps, this device allows workers to easily place the welded steel pipe on the placement plate 9, and then, with the slow rotation and lifting of the placement plate 9 and the ramp plate 8, drive the welded steel pipe to roll into the arc-shaped groove 2 on the pressure testing platform 1. This quickly prepares the welded steel pipe for clamping and sealing, avoiding a series of cumbersome operations such as using a crane, shortening the workflow and simplifying the loading operation, greatly improving the efficiency of placing the welded steel pipe, saving time and effort, and thus improving the efficiency of testing. This solves the problem in the reference patent where the pressure testing fixture, like traditional testing devices, requires a series of operations using a crane to place the welded steel pipe stably when the welded pipe is heavy. The entire process is complicated, cumbersome, time-consuming, and labor-intensive, resulting in low testing efficiency and hindering production activities.

Claims

1. A simple pressure test tool for welded pipe, comprising a pressure test platform (1); characterized in that: The utility model also includes slope board (8) and placement board (9), the upper end of test pressure platform (1) is equipped with arc groove (2), the surface of arc groove (2) is equipped with two front and back opposite recess (3), the surface of arc groove (2) is symmetrically slidably provided with the blocking disc (4) of left and right two ends, and the test pressure platform (1) is provided with the extrusion mechanism of controlling the relative movement of two blocking discs (4), is used for clamping the blocking of intermediate welded steel pipe, the front end middle part of test pressure platform (1) is fixedly connected with support seat (6), and the rotation seat (7) of pivot is rotatably connected between two support seats (6), the upper end of rotation seat (7) is fixedly connected with slope board (8), the front end of slope board (8) is fixedly connected with placement board (9), and motor no.

2. The portable pipe weld pressure test tool of claim 1, wherein: The upper end front side of placement board (9) is fixedly connected with baffle (13), and the upper end surface of slope board (8) and placement board (9) is equipped with friction groove (14).

3. The portable pipe weld pressure test tool of claim 1, wherein: The inner side of the middle part of two recesses (3) is fixedly connected with transition block (15), and the upper end middle part of test pressure platform (1) and the position of rear side are fixedly connected with intercept seat (16), and the surface of two transition blocks (15) and intercept seat (16) is equipped with the curved surface with the common arc of arc groove (2).

4. The portable pipe weld pressure test tool of claim 1, wherein: The end of two blocking discs (4) relatively close is fixedly connected with rubber sealing ring (11), and the middle part of right blocking disc (4) and rubber sealing ring (11) is equipped with the communication test pressure butt joint (12) of through.

5. The portable pipe weld pressure test tool of claim 1, wherein: The front side recess (3) is rotatably connected with bidirectional screw rod (501), and the both ends outside of bidirectional screw rod (501) are symmetrically screw connected with moving block one (502), two moving block one (502) are fixedly connected on the bottom front side of two blocking discs (4), and the right end of test pressure platform (1) is fixedly connected with motor one (503), and the output shaft of motor one (503) is fixedly connected with bidirectional screw rod (501).

6. The portable pipe weld pressure test tool of claim 5, wherein: The rear side recess (3) is fixedly connected with guide rod (504), and the both ends outside of guide rod (504) are symmetrically movably provided with moving block two (505), and two moving block two (505) are fixedly connected on the bottom rear side of two blocking discs (4).

7. The portable pipe weld pressure test tool of claim 1, wherein: The lower side of the end of two blocking discs (4) relatively far away is fixedly connected with the hollow seat (17) of the curved surface of fitting arc groove (2), and two inclined support beams (18) are fixedly connected between the upper end of hollow seat (17) and corresponding blocking disc (4).

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