Pipe pressure testing device
Technical Field
The utility model relates to the technical field of pipe detection, in particular to a circular pipe pressure testing device.
Background
The round tube is a steel material with two open ends and hollow concentric cross section, and the length of the round tube is larger than the length of the round tube. The method can be used for pipelines, thermal equipment, mechanical industry, petroleum geological drilling, containers, chemical industry and special purposes, and various physical and chemical properties of the circular tube need to be detected in the production process of the circular tube.
Chinese patent publication No. CN217765838U discloses a compression strength testing device for formed pipes. The technical scheme includes that the electric motor comprises a gear motor, the gear motor is mounted at the top of a mounting plate, the output end of the gear motor penetrates through the top of the mounting plate and is connected with a rotating shaft through a coupler, the other end of the rotating shaft sequentially penetrates through a bearing on the surface of a first side plate, a threaded hole in the center position of the surface of a second moving plate and a threaded hole in the center position of the surface of the first moving plate to be connected with a bearing on the surface of the second side plate, electric push rods are mounted on outer walls of one sides of the first moving plate and the second moving plate, a second connecting plate is mounted at the other end of the electric push rods, and one side surface of the second connecting plate is connected with the first connecting plate through a pressure detection sensor.
In the above-mentioned patent, if the strength of the pipe to be tested is high and the length is long, when the first moving plate and the second moving plate are driven to be far away, the extension length of the electric push rod is long, which may cause deformation of the telescopic rod part, thereby affecting the measurement result.
Disclosure of utility model
The utility model aims to solve the problems in the background technology and provides a circular tube pressure testing device.
The technical scheme of the utility model is that the circular tube pressure testing device comprises:
A bracket having a plurality of standoffs;
The support mechanism comprises a movable support, a linear driving mechanism a arranged on the movable support and a support ring arranged at the top end of an output shaft of the linear driving mechanism a;
The movable rod is movably penetrated through the inner side of the support ring;
The connecting frame assembly comprises a connecting frame a, a connecting frame b and a rectangular frame, wherein the connecting frame b is arranged between the connecting frame a and the rectangular frame, and the connecting frame a is connected with the end part of the movable rod;
The two groups of test assemblies are symmetrically arranged on the rectangular frame, each test assembly comprises a test head, a guide rod, a pressure sensor and a connecting sliding block, the connecting sliding blocks are arranged on the inner side of the rectangular frame in a sliding mode, the guide rods movably penetrate through the end portions of the rectangular frame, the test heads are connected with the outer ends of the guide rods, and the pressure sensors are arranged between the guide rods and the connecting sliding blocks;
the pushing mechanism is arranged on the connecting frame assembly and used for driving the two connecting sliding blocks to be away from each other.
Preferably, the two sides of the rectangular frame are provided with sliding holes, elastic components are arranged in the sliding holes on the two sides, each elastic component comprises a sliding rod and two springs, the sliding rod is arranged on the inner side of the sliding hole, the two connecting sliding blocks are slidably arranged on the sliding rod, the two springs are respectively sleeved at the two ends of the sliding rod, the guide rod is connected with a limiting block, the connecting sliding blocks are connected with vertical rods, and the end parts of the vertical rods movably penetrate through the limiting blocks and are connected with connecting blocks.
Preferably, two groups of limiting mechanisms are symmetrically arranged on the connecting frame a, each limiting mechanism comprises a screw, a knob and a limiting head, the screw is in threaded connection with the connecting frame a, and the knob and the limiting heads are respectively arranged at two ends of the screw.
Preferably, two sets of distance measuring mechanisms are arranged on the rectangular frame, each distance measuring mechanism comprises a magnetic grating ruler and a magnetic head, the magnetic grating ruler is arranged on the rectangular frame, the magnetic heads are slidably arranged on the magnetic grating ruler, and two magnetic heads on the two sets of distance measuring mechanisms are respectively connected with two connecting sliding blocks.
Preferably, the movable rod is provided with length scales along the length direction thereof, the support ring is provided with angle scales along the circumferential direction thereof, and the movable rod is provided with a pointed indicating mark.
Preferably, the pushing mechanism comprises a linear driving mechanism b and a pushing block, wherein the linear driving mechanism b is arranged on the connecting frame a, the pushing block is connected with an output shaft of the linear driving mechanism b, one end, adjacent to the connecting sliding blocks, of the pushing block is of a triangular prism structure, and chamfer angles are arranged on one sides, adjacent to the two connecting sliding blocks, of the pushing block.
Preferably, the upper end surface of the support is an inward concave cambered surface structure.
Compared with the prior art, the utility model has the following beneficial technical effects:
1. According to the technical scheme, the movable rod which movably penetrates through the supporting ring is arranged, so that the movable rod can move and rotate, and the position of the testing component in the pipeline can be conveniently adjusted;
2. The pushing block is driven to move through the linear driving mechanism b, and then the pushing block extrudes the two connecting sliding blocks to be separated, so that the testing head is driven to press the inner wall of the pipeline, the driving structure is more stable, and the testing structure cannot be influenced.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the support mechanism, the movable rod and the connecting frame assembly according to the present utility model.
FIG. 3 is a schematic diagram of a connector assembly and a test assembly according to the present utility model.
Fig. 4 is a schematic structural view of a guide rod, a pressure sensor and a connecting slider in the present utility model.
Fig. 5 is a schematic view of a partial enlarged structure at a in fig. 1.
Fig. 6 is a schematic view of a partial enlarged structure at B of fig. 3.
The device comprises the following components of 1, a support, 2, a movable support, 3, a linear driving mechanism a, 4, a movable rod, 5, a controller, 6, a connecting frame a, 7, a connecting frame b, 8, a support, 9, a linear driving mechanism b, 10, a push block, 11, a rectangular frame, 111, a sliding hole, 12, a test head, 131, a screw rod, 132, a knob, 133, a limit head, 14, a guide rod, 15, a pressure sensor, 16, a connecting slide block, 171, a length scale, 172, an angle scale, 18, a tip indicating mark, 19, a slide bar, 20, a spring, 21, a magnetic grating ruler, 211, a magnetic head, 22, a supporting ring, 23, a vertical rod, 24, a connecting block, 25 and a limit block.
Detailed Description
Example 1
As shown in fig. 1 to 6, the device for testing the pressure of the round tube provided by the embodiment comprises a bracket 1, a supporting mechanism, a movable rod 4, a connecting frame assembly, a pushing mechanism and two groups of testing assemblies;
Be provided with a plurality of supports 8 on the support 1, the up end of support 8 is the cambered surface structure of inwards sunken, and the setting of above-mentioned structure can play spacing effect to the pipeline for the pipeline can be placed stably.
The support mechanism comprises a movable support 2, a linear driving mechanism a3 arranged on the movable support 2 and a support ring 22 arranged at the top end of an output shaft of the linear driving mechanism a3, wherein the movable rod 4 movably penetrates through the inner side of the support ring 22, length scales 171 are arranged on the movable rod 4 along the length direction of the movable rod, operators can roughly judge the length of the test assembly extending into a pipeline through the arranged length scales 171, angle scales 172 are arranged on the support ring 22 along the circumferential direction of the support ring, a pointed end indication mark 18 is arranged on the movable rod 4, and the operators can conveniently determine the rotation angle of the test assembly through the arranged pointed end indication mark 18 and the set limit angle scales 172.
The connecting frame assembly comprises a connecting frame a6, a connecting frame b7 and a rectangular frame 11, wherein the connecting frame b7 is arranged between the connecting frame a6 and the rectangular frame 11, and the connecting frame a6 is connected with the end part of the movable rod 4.
The two groups of test components are symmetrically arranged on the rectangular frame 11, the test components comprise a test head 12, a guide rod 14, a pressure sensor 15 and a connecting sliding block 16, the connecting sliding block 16 is slidably arranged on the inner side of the rectangular frame 11, the guide rod 14 movably penetrates through the end part of the rectangular frame 11, the test head 12 is connected with the outer end of the guide rod 14, the pressure sensor 15 is arranged between the guide rod 14 and the connecting sliding block 16, sliding holes 111 are formed in two sides of the rectangular frame 11, elastic components are respectively arranged in the sliding holes 111 in two sides, each elastic component comprises a sliding rod 19 and two springs 20, the sliding rods 19 are arranged on the inner sides of the sliding holes 111, the two connecting sliding blocks 16 are slidably arranged on the sliding rods 19, the two springs 20 are respectively sleeved on two ends of the sliding rods 19, after the test work is finished, the push block 10 is separated from the connecting sliding blocks 16, automatic reset of the two connecting sliding blocks 16 can be realized through the arrangement of the springs 20, the limiting blocks 25 are connected to the guide rod 14, and the end parts of the connecting sliding blocks 16, which are connected with vertical rods 23 and 23 movably penetrate through the limiting blocks 25 and are connected with connecting blocks 24.
The pushing mechanism is arranged on the connecting frame assembly and used for driving the two connecting sliding blocks 16 to be far away from each other, the pushing mechanism comprises a linear driving mechanism b9 and a pushing block 10, the linear driving mechanism b9 is arranged on the connecting frame a6, the pushing block 10 is connected with an output shaft of the linear driving mechanism b9, one end, adjacent to the connecting sliding blocks 16, of the pushing block 10 is of a triangular prism structure, and chamfer angles are arranged on the two connecting sliding blocks 16 and on one side, adjacent to the pushing block 10, of the pushing block 10, and the end portion of the pushing block 10 can be conveniently inserted between the two connecting sliding blocks 16 through the chamfer angles arranged on the connecting sliding blocks 16.
In this embodiment, during testing, the testing component is inserted into the pipeline to be tested, then the controller 5 mounted at the outer end of the movable rod 4 controls the linear driving mechanism b9 to work, the linear driving mechanism b9 drives the push block 10 to move towards the side adjacent to the connecting slide blocks 16, the end of the push block 10 is inserted between the two connecting slide blocks 16, the connecting slide blocks 16 are far away from each other along with the continuous movement of the push block 10, the connecting slide blocks 16 push the guide rod 14 and the testing head 12 to move, the testing head 12 can perform compression testing on the inner wall of the pipeline, the pressure sensor 15 can measure the pressure change and feed back the detected data to the controller 5, and during testing, the testing position of the inner wall of the pipeline can be adjusted by moving the movable rod 4 and rotating the movable rod 4.
Example two
As shown in fig. 3, in the embodiment, compared with the first embodiment, two sets of limiting mechanisms are symmetrically installed on the connecting frame a6, each limiting mechanism comprises a screw 131, a knob 132 and a limiting head 133, the screw 131 is in threaded connection with the connecting frame a6, the knob 132 and the limiting heads 133 are respectively installed at two ends of the screw 131, and the screw 131 is driven to rotate through the knob 132, so that the limiting heads 133 at two sides are abutted against the inner wall of a pipeline, and the limiting effect on the connecting frame assembly can be achieved.
Example III
As shown in fig. 6, in the embodiment, compared with the first embodiment, two sets of distance measuring mechanisms are mounted on the rectangular frame 11, each distance measuring mechanism includes a magnetic grating ruler 21 and a magnetic head 211, the magnetic grating ruler 21 is mounted on the rectangular frame 11, the magnetic heads 211 are slidably mounted on the magnetic grating ruler 21, and two magnetic heads 211 on the two sets of distance measuring mechanisms are respectively connected with two connecting sliders 16, in the test process, when the inner wall of a pipeline is not stressed, the pipe wall of the pipeline is bent or broken, the connecting sliders 16 generate displacement, the connecting sliders 16 move to drive the magnetic heads 211 to move, the set magnetic grating ruler 21 can detect displacement changes of the magnetic heads 211 and feed detection data back to the controller 5, and therefore the pipeline is not required to be observed manually through naked eyes.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.