Round tube pressure testing device

Abstract

The utility model relates to the technical field of pipe detection, in particular to a circular pipe pressure testing device. Comprising a support, a supporting mechanism, a movable rod, a connecting frame assembly, a pushing mechanism and two testing assemblies. A plurality of supporting seats are arranged on the bracket; the supporting mechanism comprises a movable support, a linear driving mechanism a arranged on the movable support and a supporting ring installed at the top end of an output shaft of the linear driving mechanism a. The connecting frame assembly comprises a connecting frame a, a connecting frame b and a rectangular frame. The two groups of test assemblies are symmetrically mounted on the rectangular frame, and each test assembly comprises a test head, a guide rod, a pressure sensor and a connecting slide block; the pushing mechanism is installed on the connecting frame assembly and used for driving the two connecting sliding blocks to be away from each other. According to the utility model, the test process is more stable, the test data is accurate, and the device is not easy to damage.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe detection, in particular to a round pipe pressure testing device. Background Art

[0002] Round tube refers to steel with two ends open and a hollow concentric cross section, with a large ratio of length to circumference. It can be used for pipelines, thermal equipment, mechanical industry, petroleum geological drilling, containers, chemical industry and special purposes; in the production process of round tubes, it is necessary to test the physical and chemical properties of the round tubes.

[0003] The Chinese patent with the announcement number CN217765838U discloses a compressive strength test device for formed pipes. Its technical solution includes: a reduction motor, the reduction motor is installed on the top of the mounting plate, the output end of the reduction motor passes through the top of the mounting plate and is connected to the rotating shaft through a coupling, the other end of the rotating shaft passes through the bearing on the surface of the first side plate, the threaded hole at the center position of the surface of the second moving plate and the threaded hole at the center position of the surface of the first moving plate in sequence and is connected to the bearing on the surface of the second side plate, the first moving plate and the second moving plate are both installed on one side of the outer wall, the other end of the electric push rod is installed with a second connecting plate, and one side surface of the second connecting plate is connected to the first connecting plate through a pressure detection sensor.

[0004] The above-mentioned disclosed patent still has the following technical defects: during the test process, if the strength and length of the pipeline to be tested are high, when the first movable plate and the second movable plate are driven away from each other, when the extended length of the electric push rod is long, the telescopic rod part may be deformed, thereby affecting the measurement result. Utility Model Content

[0005] The utility model aims to provide a round pipe pressure testing device in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is a round tube pressure testing device, comprising:

[0007] A bracket having a plurality of supports;

[0008] The supporting mechanism comprises a movable support, a linear drive mechanism a arranged on the movable support, and a supporting ring installed on the top end of the output shaft of the linear drive mechanism a;

[0009] A movable rod, the movable rod movably passes through the inner side of the supporting ring;

[0010] A connecting frame assembly, the connecting frame assembly comprises a connecting frame a, a connecting frame b and a rectangular frame, the connecting frame b is arranged between the connecting frame a and the rectangular frame, and the connecting frame a is connected to the end of the movable rod;

[0011] Two groups of test components, the two groups of test components are symmetrically installed on the rectangular frame, the test components include a test head, a guide rod, a pressure sensor and a connecting slider, the connecting slider is slidably arranged on the inner side of the rectangular frame, the guide rod movably passes through the end of the rectangular frame, the test head is connected to the outer end of the guide rod, and the pressure sensor is installed between the guide rod and the connecting slider;

[0012] A pushing mechanism installed on the connecting frame assembly for driving two connecting slide blocks to move away from each other.

[0013] Preferably, sliding holes are provided on both sides of the rectangular frame, and elastic components are installed in the sliding holes on both sides. The elastic components include a sliding rod and two springs. The sliding rod is arranged on the inner side of the sliding hole, and the two connecting sliders are slidably installed on the sliding rod, and the two springs are respectively mounted on the two ends of the sliding rod; a limiting block is connected to the guide rod, and a vertical rod is connected to the connecting slider, and the end of the vertical rod movably passes through the limiting block and is connected to the connecting block.

[0014] Preferably, two sets of limiting mechanisms are symmetrically installed on the connecting frame a, and the limiting mechanisms include a screw rod, a knob and a limiting head. The screw rod is threadedly connected to the connecting frame a, and the knob and the limiting head are respectively installed at both ends of the screw rod.

[0015] Preferably, two sets of distance measuring mechanisms are installed on the rectangular frame, the distance measuring mechanisms include a magnetic scale and a magnetic head, the magnetic scale is installed on the rectangular frame, the magnetic head is slidably installed on the magnetic scale, and the two magnetic heads on the two sets of distance measuring mechanisms are respectively connected to the two connecting sliders.

[0016] Preferably, the movable rod is provided with a length scale along its length direction; the support ring is provided with an angle scale along its circumference direction, and the movable rod is provided with a pointed indicator mark.

[0017] Preferably, the pushing mechanism includes a linear drive mechanism b and a push block, the linear drive mechanism b is installed on the connecting frame a, the push block is connected to the output shaft of the linear drive mechanism b, and the end of the push block adjacent to the connecting slider is a triangular prism structure; chamfers are provided on one side of the two connecting sliders and adjacent to the push blocks.

[0018] Preferably, the upper end surface of the support is an inwardly concave arc surface structure.

[0019] Compared with the prior art, the utility model has the following beneficial technical effects:

[0020] 1. In this technical solution, a movable rod that movably penetrates the support ring is provided so that the movable rod can be moved and rotated, thereby facilitating adjustment of the position of the test assembly in the pipeline;

[0021] 2. The push block is driven to move by the linear drive mechanism b, and the push block squeezes the two connecting sliders to separate, thereby driving the test head to apply pressure to the inner wall of the pipe. The driving structure is more stable and will not affect the test structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the support mechanism, movable rod and connecting frame assembly in the utility model.

[0024] Figure 3 It is a structural schematic diagram of the connecting frame assembly and the testing assembly in the utility model.

[0025] Figure 4 It is a structural schematic diagram of the guide rod, pressure sensor and connecting slider in the utility model.

[0026] Figure 5 for Figure 1 Schematic diagram of the local enlarged structure at A.

[0027] Figure 6 for Figure 3 Schematic diagram of the local enlarged structure at point B.

[0028] 1. Bracket; 2. Mobile support; 3. Linear drive mechanism a; 4. Movable rod; 5. Controller; 6. Connecting frame a; 7. Connecting frame b; 8. Support; 9. Linear drive mechanism b; 10. Push block; 11. Rectangular frame; 111. Sliding hole; 12. Test head; 131. Screw rod; 132. Knob; 133. Limiting head; 14. Guide rod; 15. Pressure sensor; 16. Connecting slider; 171. Length scale; 172. Angle scale; 18. Pointed indicator mark; 19. Sliding rod; 20. Spring; 21. Magnetic scale; 211. Magnetic head; 22. Support ring; 23. Vertical rod; 24. Connecting block; 25. Limiting block. DETAILED DESCRIPTION

[0029] Embodiment 1

[0030] like Figure 1-Figure 6 As shown, a round tube pressure testing device proposed in this embodiment includes a bracket 1, a supporting mechanism, a movable rod 4, a connecting frame assembly, a pushing mechanism and two sets of testing assemblies;

[0031] A plurality of supports 8 are arranged on the bracket 1, and the upper end surface of the support 8 is an inwardly concave arc surface structure. The arrangement of the above structure can limit the position of the pipeline, so that the pipeline can be placed stably.

[0032] The supporting mechanism includes a movable support 2, a linear drive mechanism a3 arranged on the movable support 2, and a supporting ring 22 installed on the top end of the output shaft of the linear drive mechanism a3; the movable rod 4 movably passes through the inner side of the supporting ring 22; the movable rod 4 is provided with a length scale 171 along its length direction, and the length scale 171 is set so that the operator can roughly judge the length of the test component extending into the pipeline; the support ring 22 is provided with an angle scale 172 along its circumference, and the movable rod 4 is provided with a pointed indicator mark 18, and the pointed indicator mark 18 and the angle scale 172 enable the operator to easily determine the rotation angle of the test component.

[0033] The connecting frame assembly includes a connecting frame a6, a connecting frame b7 and a rectangular frame 11. The connecting frame b7 is arranged between the connecting frame a6 and the rectangular frame 11. The connecting frame a6 is connected to the end of the movable rod 4.

[0034] Two groups of test components are symmetrically installed on the rectangular frame 11. The test components include a test head 12, a guide rod 14, a pressure sensor 15 and a connecting slider 16. The connecting slider 16 is slidably arranged on the inner side of the rectangular frame 11. The guide rod 14 movably passes through the end of the rectangular frame 11. The test head 12 is connected to the outer end of the guide rod 14. The pressure sensor 15 is installed between the guide rod 14 and the connecting slider 16. Slide holes 111 are opened on both sides of the rectangular frame 11. Elastic components are installed in the slide holes 111 on both sides. The elastic components include The guide rod 14 is connected to a limit block 25, and the connecting slider 16 is connected to a vertical rod 23. The end of the vertical rod 23 movably passes through the limit block 25 and is connected to the connecting block 24.

[0035] The pushing mechanism is installed on the connecting frame assembly to drive the two connecting sliders 16 to move away from each other. The pushing mechanism includes a linear drive mechanism b9 and a push block 10. The linear drive mechanism b9 is installed on the connecting frame a6. The push block 10 is connected to the output shaft of the linear drive mechanism b9. The end of the push block 10 adjacent to the connecting slider 16 is a triangular prism structure; chamfers are provided on one side of the two connecting sliders 16 and adjacent to the push block 10. By providing the chamfers on the connecting slider 16, the end of the push block 10 can be easily inserted between the two connecting sliders 16.

[0036] In this embodiment, when conducting a test, the test assembly is extended into the pipe to be tested, and then the controller 5 installed at the outer end of the movable rod 4 controls the linear drive mechanism b9 to work. The linear drive mechanism b9 drives the push block 10 to move toward the side adjacent to the connecting slider 16, and the end of the push block 10 is inserted between the two connecting sliders 16. As the push block 10 continues to move, the two connecting sliders 16 move away from each other, and the connecting slider 16 then pushes the guide rod 14 and the test head 12 to move. The test head 12 can perform a pressure test on the inner wall of the pipe. During the process, the set pressure sensor 15 can measure the pressure change and feed back the detected data to the controller 5. When conducting a test, by moving the movable rod 4 and rotating the movable rod 4, the test position of the inner wall of the pipe can be adjusted. In summary, compared with the test device in the comparative document, the test device set in the present technical solution has a more stable test process, accurate test data, and the device is not easy to be damaged.

[0037] Embodiment 2

[0038] like Figure 3 As shown, a circular pipe pressure testing device proposed in this embodiment, compared with embodiment one, in this embodiment, two sets of limiting mechanisms are symmetrically installed on the connecting frame a6, and the limiting mechanism includes a screw 131, a knob 132 and a limiting head 133. The screw 131 is threadedly connected to the connecting frame a6, and the knob 132 and the limiting head 133 are respectively installed at both ends of the screw 131; the screw 131 is driven to rotate by the knob 132, so that the limiting heads 133 on both sides are tightly pressed against the inner wall of the pipe, thereby being able to limit the connecting frame assembly.

[0039] Embodiment 3

[0040] like Figure 6 As shown, a circular pipe pressure testing device proposed in this embodiment, compared with the first embodiment, in this embodiment, two sets of distance measuring mechanisms are installed on the rectangular frame 11, the distance measuring mechanisms include a magnetic scale 21 and a magnetic head 211, the magnetic scale 21 is installed on the rectangular frame 11, the magnetic head 211 is slidably installed on the magnetic scale 21, and the two magnetic heads 211 on the two sets of distance measuring mechanisms are respectively connected to the two connecting sliders 16. During the test, when the inner wall of the pipe cannot withstand the pressure, its pipe wall will bend or break, then the connecting slider 16 will be displaced, and the movement of the connecting slider 16 drives the magnetic head 211 to move, and the set magnetic scale 21 can detect the displacement change of the magnetic head 211 and feed back the detection data to the controller 5, thereby eliminating the need for manual observation of the pipe with the naked eye.

[0041] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A round tube pressure testing device, characterized in that: include: A support (1) having a plurality of supports (8); A support mechanism, the support mechanism comprising a movable support (2), a linear drive mechanism a (3) arranged on the movable support (2), and a support ring (22) installed at the top end of the output shaft of the linear drive mechanism a (3); A movable rod (4), the movable rod (4) movably penetrates the inner side of the support ring (22); A connecting frame assembly, the connecting frame assembly comprising a connecting frame a (6), a connecting frame b (7) and a rectangular frame (11), the connecting frame b (7) being arranged between the connecting frame a (6) and the rectangular frame (11), and the connecting frame a (6) being connected to the end of the movable rod (4); Two groups of test components are symmetrically mounted on a rectangular frame (11). The test components include a test head (12), a guide rod (14), a pressure sensor (15) and a connecting slider (16). The connecting slider (16) is slidably arranged on the inner side of the rectangular frame (11). The guide rod (14) movably passes through the end of the rectangular frame (11). The test head (12) is connected to the outer end of the guide rod (14). The pressure sensor (15) is mounted between the guide rod (14) and the connecting slider (16). A pushing mechanism is installed on the connecting frame assembly and is used to drive two connecting slide blocks (16) to move away from each other.

2. A round tube pressure testing device according to claim 1, characterized in that: Both sides of the rectangular frame (11) are provided with sliding holes (111), and elastic components are installed in the sliding holes (111) on both sides. The elastic components include a sliding rod (19) and two springs (20). The sliding rod (19) is arranged on the inner side of the sliding hole (111), and the two connecting sliders (16) are slidably installed on the sliding rod (19). The two springs (20) are respectively sleeved on the two ends of the sliding rod (19); the guide rod (14) is connected to a limit block (25), and the connecting slider (16) is connected to a vertical rod (23), and the end of the vertical rod (23) movably passes through the limit block (25) and is connected to a connecting block (24).

3. A round tube pressure testing device according to claim 1, characterized in that: Two sets of limiting mechanisms are symmetrically mounted on the connecting frame a (6), the limiting mechanisms comprising a screw rod (131), a knob (132) and a limiting head (133), the screw rod (131) is threadedly connected to the connecting frame a (6), and the knob (132) and the limiting head (133) are respectively mounted on both ends of the screw rod (131).

4. A round tube pressure testing device according to claim 1, characterized in that: Two sets of distance measuring mechanisms are installed on the rectangular frame (11), the distance measuring mechanisms comprising a magnetic scale (21) and a magnetic head (211), the magnetic scale (21) is installed on the rectangular frame (11), the magnetic head (211) is slidably installed on the magnetic scale (21), and the two magnetic heads (211) on the two sets of distance measuring mechanisms are respectively connected to the two connecting sliders (16).

5. A round tube pressure testing device according to claim 1, characterized in that: The movable rod (4) is provided with a length scale (171) along its length direction; the support ring (22) is provided with an angle scale (172) along its circumference direction; and the movable rod (4) is provided with a pointed indicator mark (18).

6. A round tube pressure testing device according to claim 1, characterized in that: The pushing mechanism comprises a linear driving mechanism b (9) and a pushing block (10), wherein the linear driving mechanism b (9) is mounted on a connecting frame a (6), the pushing block (10) is connected to an output shaft of the linear driving mechanism b (9), and one end of the pushing block (10) adjacent to the connecting slider (16) is a triangular prism structure; and one side of the two connecting sliders (16) and adjacent to the pushing block (10) is provided with a chamfer.

7. A round tube pressure testing device according to claim 1, characterized in that: The upper end surface of the support (8) is an inwardly concave arc surface structure.

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