Pipeline geometric dimension detection device

Abstract

The invention relates to the technical field of pipeline detection, in particular to a pipeline geometric dimension detection device which comprises a moving mechanism, a section measuring mechanism and a wet circumference measuring mechanism. The moving mechanism comprises a moving trolley and a rotary supporting assembly. The section measuring mechanism comprises a measuring cylinder, a telescopic part a, a lifting block and a clamping assembly; the measuring cylinder is arranged on the rotary supporting assembly; the telescopic part a is connected with the rotary supporting assembly; the lifting block is connected with the telescopic component a; a water injection opening is formed in the lifting block; the clamping assembly is arranged at the bottom end of the lifting block; the wet circumference measuring mechanism comprises a limiting assembly, a cylinder a, a cylinder b and a telescopic part b; the cylinder a is arranged on the rotary supporting assembly; the cylinder b is slidably arranged on the cylinder a; an airbag film is arranged on the surface of the cylinder b; a plurality of circumferentially distributed rods a are arranged on the inner wall of the air bag film; the telescopic component b is arranged in the cylinder a and is connected with the cylinder b; and the limiting assembly is arranged on the cylinder a. According to the invention, the steps of measuring the cross-sectional area, the wetted perimeter and the hydraulic diameter of the irregular pipeline are simplified, and meanwhile, the measurement difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline detection, in particular to a pipeline geometric size detection device. BACKGROUND

[0002] Pipeline geometric size measurement is an important link in industrial detection, engineering construction and quality control, mainly used to ensure that the pipeline meets the design specifications and safety standards.

[0003] A pipeline geometric size detection device and method are disclosed in Chinese Patent No. CN118463768B; the diameter shape of the pipeline body is depicted by the stylus, so that the trajectory pen depicts the diameter shape of the pipeline body on the drawing board, so that the trace on the drawing board facilitates the detection of the shape and size of the pipeline body diameter.

[0004] However, the above-mentioned prior art has the following defects: the trajectory pen only depicts the shape of the irregular pipeline inner wall on the drawing board, and since the pipeline inner wall is irregular, the depicted pipeline inner wall shape is also irregular, which still does not facilitate the measurement and calculation of the cross-sectional area, wet perimeter and hydraulic diameter of the pipeline inner wall. SUMMARY

[0005] The present application aims to solve the problems in the background art and provides a pipeline geometric size detection device.

[0006] The technical scheme of the present application is a pipeline geometric size detection device, comprising:

[0007] A moving mechanism comprising a moving vehicle and a rotating support assembly, the rotating support assembly being provided on the moving vehicle;

[0008] A cross-section measuring mechanism comprising a graduated cylinder, a telescopic component a, a lifting block, a gas pump a, an elastic membrane and a clamping assembly; the graduated cylinder is provided on the rotating support assembly; the telescopic component a is provided with two and connected with the rotating support assembly; the lifting block is connected with the telescopic component a through a plate a; a water injection port is formed in the center of the lifting block; an annular groove is formed in the inner wall of the water injection port; the elastic membrane is provided in the annular groove; the gas pump a is provided on the lifting block and communicates with the annular groove; the clamping assembly is provided with multiple groups and is circumferentially distributed at the bottom end of the lifting block;

[0009] A wet perimeter measuring mechanism comprising a limiting assembly, a cylinder a, a cylinder b, a telescopic component b, a gas pump b and a housing a; the cylinder a is provided on the rotating support assembly; the cylinder b is slidingly provided on the cylinder a; a plurality of air holes a are formed in the side wall of the cylinder b; the surface of the cylinder b is provided with a gas bag membrane; the inner wall of the gas bag membrane is provided with a plurality of circumferentially distributed rods a; the telescopic component b is provided in the cylinder a and connected with the cylinder b; the limiting assembly is provided on the cylinder a; the gas pump b is provided on the limiting assembly through the housing a.

[0010] Preferably, the rotating support assembly comprises a disc, a cylinder c, a gear ring, a motor, a gear, a rod b and a plate b; the disc is arranged on the moving vehicle; the cylinder c is arranged on the disc; the gear ring is rotatably arranged on the outer surface of the cylinder c; the plate b is arranged at the top end of the gear ring; the cylinder and the cylinder a are both arranged on the plate b; the rod b is arranged with two ends connected to the plate b respectively; the bottom end of the rod b is rotatably arranged with a ball; the motor is arranged on the disc and the output end thereof is connected with the gear; the gear is engaged with the gear ring; one side telescopic component a is arranged on the inner side of the cylinder c; the other side telescopic component a is arranged on the disc.

[0011] Preferably, the inner bottom end of the cylinder is arranged with a rubber pad; a drainage opening is arranged on the side wall of the cylinder; the drainage opening is arranged with a sealing plug.

[0012] Preferably, the bottom end of the lifting block is arranged with a plurality of circumferentially distributed sliding grooves; the clamping assembly comprises a telescopic component c, a sliding block, a clamping block, a sponge block and a rubber layer; the sliding block is slidably connected with the sliding groove; the telescopic component c is arranged with a plurality of ends connected to the lifting block; the telescopic component c is connected with the sliding block; the sliding block is connected with the clamping block; the sponge block is connected with the clamping block; the rubber layer is connected with the sponge block.

[0013] Preferably, the top end of the lifting block is arranged with a funnel at the water inlet.

[0014] Preferably, the limiting assembly comprises a shell b, a rod c, a pipe a and a spring; the shell b is connected to the outer surface of the cylinder a; a plurality of sliding holes are circumferentially arranged at the top end of the shell b; the pipe a is slidably arranged in the sliding hole; the rod c is slidably arranged in the pipe a; the rod c is connected with the inner bottom end of the shell; the spring is arranged in the inner side of the pipe a and the two ends thereof are connected to the pipe a and the rod c respectively.

[0015] Preferably, a gas hole b is arranged on the side wall of the cylinder a; the air pump b is communicated with the shell b.

[0016] Compared with the prior art, the above technical scheme of the present application has the following beneficial technical effects:

[0017] By arranging the cross-section measuring mechanism, the inside of the to-be-measured pipeline is filled with water, and then the water inside the to-be-measured pipeline is measured to obtain the volume of the inside of the to-be-measured pipeline, so as to calculate the cross-sectional area of the to-be-measured pipeline, thereby reducing the measurement difficulty of the cross-sectional area of the irregular pipeline.

[0018] By arranging the wet perimeter measuring mechanism, the air bag membrane is inflated in the inside of the to-be-measured pipeline and is shaped, so that the air bag membrane is inflated to form the shape of the inside of the to-be-measured pipeline, and the perimeter of the inflated air bag membrane can be easily measured by the rope ruler, so that the perimeter of the inner wall of the cross section of the to-be-measured pipeline can be obtained, and the hydraulic diameter of the irregular to-be-measured pipeline can be calculated in cooperation with the cross-sectional area, thereby significantly simplifying the measurement steps of the hydraulic diameter and the wet perimeter of the irregular pipeline, and reducing the measurement difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective view of an embodiment of the present application;

[0020] Figure 2 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application;

[0021] Figure 3 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application; Figure 2 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application;

[0022] Figure 4 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application;

[0023] Figure 5 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application; Figure 4 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application;

[0024] Figure 6 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application;

[0025] Figure 7 A schematic view of the structure of the lifting block profile state separated from the clamping assembly in an embodiment of the present application;

[0026] The drawings show: 1, a moving vehicle; 2, a disc; 3, a plate b; 4, a measuring cylinder; 5, a lifting block; 501, a water inlet; 502, a chute; 503, an annular groove; 6, a telescopic component c; 7, a plate a; 8, a funnel; 9, a gas pump a; 10, a telescopic component a; 11, a sealing plug; 12, a motor; 13, a gear; 14, a cylinder b; 1401, a gas hole a; 15, a gas bag film; 16, a housing b; 17, a housing a; 18, a gear ring; 19, an elastic film; 20, a pipe a; 21, a gas pump b; 22, a cylinder a; 2201, a gas hole b; 23, a telescopic component b; 24, a rod c; 25, a rod a; 26, a spring; 27, a sliding block; 28, a clamping block; 29, a sponge block; 30, a rubber layer; 31, a rubber pad; 32, a rod b; 33, a cylinder c. DETAILED DESCRIPTION

[0027] Embodiment one, as shown in the drawings, the present application proposes a pipeline geometric size detection device, including moving mechanism, cross section measuring mechanism and wet perimeter measuring mechanism; Figures 1-5

[0028] The moving mechanism includes a moving vehicle 1 and a rotating support assembly, and the rotating support assembly is arranged on the moving vehicle 1; the moving vehicle 1 facilitates the movement of the device; the moving vehicle 1 is a flat top remote control electric flat car; its load is 1-100 tons, and its specific structure and how to operate its movement are prior art, which will not be described here; the rotating support assembly can realize the position switching function of the measuring cylinder 4 and the wet perimeter measuring mechanism;

[0029] ​The cross-section measuring mechanism comprises a measuring cylinder 4, a telescopic component a10, a lifting block 5, an air pump a9, an elastic film 19 and a clamping assembly; the measuring cylinder 4 is arranged on the rotary support assembly; the inner bottom end of the measuring cylinder 4 is provided with a rubber pad 31 (the rubber pad 31 is only a thin layer, and the deformation amount of the rubber pad 31 is very small when the bottom end of the pipeline to be measured presses the rubber pad 31, so that the rubber pad 31 does not affect the measurement of the internal volume of the pipeline); a drain port is formed in the side wall of the measuring cylinder 4; the drain port is provided with a sealing plug 11 (by removing the sealing plug 11, the water in the measuring cylinder 4 can be drained); the telescopic component a10 is provided with two and connected with the rotary support assembly (the telescopic component a10 includes but is not limited to a pneumatic cylinder and the like); the lifting block 5 is connected with the telescopic component a10 through a plate a7; a water inlet 501 is formed in the center of the lifting block 5; a funnel 8 is arranged at the top end of the lifting block 5 at the water inlet 501; an annular groove 503 is formed in the inner wall of the water inlet 501 (the annular groove 503 is close to the bottom end of the water inlet 501); the elastic film 19 is arranged in the annular groove 503; the air pump a9 is arranged on the lifting block 5 and communicates with the annular groove 503 (the air pump a9 is a dual-purpose pump); the clamping assembly is provided with multiple groups and is circumferentially distributed at the bottom end of the lifting block 5.

[0030] It should be noted that one end of the pipeline to be measured is clamped and fixed by the clamping assembly, while ensuring that the top end of the pipeline to be measured is closely attached to the bottom end of the lifting block 5; then the telescopic component a10 drives the lifting block 5 to descend, and then the clamping assembly drives the pipeline to be measured to move downward, so that the bottom end of the pipeline to be measured contacts and presses the rubber pad 31, and the sealing function of the bottom end of the pipeline to be measured can be realized under the action of the rubber pad 31; then water is injected into the pipeline to be measured through the funnel 8 cooperating with the water inlet 501, until the water overflows into the funnel 8, which indicates that the pipeline to be measured is filled with water, and then the air pump a9 is started to inflate the inside of the annular groove 503, so that the elastic film 19 expands, and the expansion of the elastic film 19 blocks the water inlet 501, at this time, the water overflowing into the water inlet 501 and the funnel 8 will not flow back; then the telescopic component a10 drives the lifting block 5 to rise and move away from the measuring cylinder 4, and then drives the pipeline to be measured to rise, so that the pipeline to be measured is separated from the rubber pad 31, at this time, the water in the pipeline to be measured flows into the measuring cylinder 4, and thus the volume of the water, i.e. the volume of the pipeline to be measured, can be obtained, and the cross-sectional area of the pipeline to be measured can be calculated by the formula: cross-sectional area A = V / L; V: the internal volume of the pipeline to be measured; L: the length of the pipeline to be measured.

[0031] It should be noted that the volume of the rubber pad 31 can be obtained by the existing measurement method; when the volume of the water is obtained by the measuring cylinder 4, the volume of the rubber pad 31 needs to be subtracted (similar to "peeling" in weighing).

[0032] It is worth noting that the bottom end of the lifting block 5 is provided with a rubber ring at the water inlet 501, which increases the sealing between the top end of the pipeline to be tested and the rubber block, preventing water from overflowing through the gap between the top end of the pipeline to be tested and the bottom end of the lifting block 5.

[0033] The wet perimeter measuring mechanism comprises a limiting assembly, a cylinder a22, a cylinder b14, a telescopic part b23, a gas pump b21 and a shell a17; the cylinder a22 is arranged on the rotating support assembly; the cylinder b14 is slidingly arranged on the cylinder a22; a plurality of air holes a1401 are formed in the side wall of the cylinder b14; the surface of the cylinder b14 is provided with a gas bag film 15; the inner wall of the gas bag film 15 is provided with a plurality of circumferentially distributed rods a25; the telescopic part b23 is arranged in the cylinder a22 and connected with the cylinder b14 (the telescopic part b23 comprises but is not limited to a gas cylinder and the like); the limiting assembly is arranged on the cylinder a22; the gas pump b21 is arranged on the limiting assembly through the shell a17; the limiting assembly comprises a shell b16, a rod c24, a pipe a20 and a spring 26; the shell b16 is connected to the outer surface of the cylinder a22; a plurality of sliding holes are circumferentially formed in the top end of the shell b16; the pipe a20 is slidingly arranged in the sliding hole; the rod c24 is slidingly arranged in the pipe a20; the rod c24 is connected to the inner bottom end of the shell; the spring 26 is arranged in the inner side of the pipe a20 and the two ends thereof are respectively connected to the pipe a20 and the rod c24; an air hole b2201 is formed in the side wall of the cylinder a22; the gas pump b21 is in communication with the shell b16 (the gas pump b21 is a dual-purpose suction pump).

[0034] It should be noted that the telescopic part b23 drives the cylinder b14 to rise, so that the cylinder b14 drives the air bag film 15 to extend into the inside of the pipeline to be measured; then the air pump b21 inflates the inside of the shell b16, the gas enters the cylinder a22 through the air hole b2201, then enters the cylinder b14, and then the gas enters the air bag film 15 through the air hole a1401, so that the air bag film 15 expands, and then drives the plurality of rods a25 to diffuse around until the air bag film 15 cannot continue to expand after contacting the inner wall of the pipeline to be measured; at this time, first control the telescopic part a10 to drive the lifting block 5 to descend by a certain distance, and then control the telescopic part b23 to drive the cylinder b14 to descend by a certain distance, so that part of the expanded air bag film 15 is located inside the pipeline to be measured, and at the same time, the rod a25 in the expanded air bag film 15 can press down the pipe a20 in contact with it, so that the pipe a20 moves downward, and then control the telescopic part a10 to move the pipeline to be measured upward and separate from the expanded air bag film 15; at this time, due to the downward pressing of the rod a25 on the pipe a20, under the blocking action of the pipe a20 around which is not pressed, the rod a25 cannot be driven to move by the air bag film 15, so that the expanded air bag film 15 cannot continue to expand under the action of the internal gas pressure after losing the constraint of the pipeline to be measured, thereby maintaining the shape of the inside of the pipeline to be measured (i.e. the setting function of the air bag film 15 after expansion is realized by the rod a25), and then the rope tape is wound around the surface of the expanded air bag film 15, so that the circumference of the expanded air bag film 15, i.e. the wet perimeter P (i.e. the inner wall perimeter of the cross section of the pipeline to be measured) of the pipeline to be measured, can be measured; then the hydraulic diameter D h = 4A / P; A: cross-sectional area; P: wet perimeter.

[0035] It should be noted that a sliding sealing structure such as rubber is arranged between the cylinder b14 and the cylinder a22 to ensure the sealing property during the relative movement of the cylinder b14 and the cylinder a22.

[0036] It should be noted that when the expanded air bag film 15 drives the rod a25 to move upward away from the pipe a20, the pipe a20 moves upward to reset under the elastic force of the spring 26.

[0037] In example two, as Figure 7As shown, the present invention proposes a pipe geometry detection device. Compared with Embodiment 1, this embodiment further details the structure of the rotating support assembly. The rotating support assembly includes a disc 2, a cylinder c33, a gear ring 18, a motor 12, a gear 13, a rod b32, and a plate b3. The disc 2 is mounted on a moving vehicle 1; the cylinder c33 is mounted on the disc 2; the gear ring 18 is rotatably mounted on the outer surface of the cylinder c33; the plate b3 is mounted on the top of the gear ring 18; the measuring cylinder 4 and the cylinder a22 are both mounted on the plate b3; two rods b32 are provided and are respectively connected to both ends of the plate b3; the bottom end of the rod b32 is provided with rolling balls; the motor 12 is mounted on the disc 2 and its output end is connected to the gear 13; the gear 13 meshes with the gear ring 18; a telescopic component a10 on one side is located inside the cylinder c33; and a telescopic component a10 on the other side is located on the disc 2.

[0038] In this embodiment, the motor 12 drives the gear 13 to rotate, the gear 13 drives the gear ring 18 to rotate, the gear ring 18 drives the plate b3 to rotate, and the plate b3 drives the measuring cylinder 4 and the wetted perimeter measuring mechanism to perform circular motion, thereby realizing the function of exchanging the positions of the measuring cylinder 4 and the wetted perimeter measuring mechanism, which facilitates the measurement of the cross-sectional area and wetted perimeter of the pipe under test.

[0039] It should be noted that rod b32 can support both ends of plate b3, and the ball bearings can reduce the friction between rod b32 and disk 2.

[0040] Example 3, as Figure 2 and Figure 6 As shown, the present invention proposes a pipe geometry detection device. Compared with Embodiment 2, this embodiment further details the structure of the clamping assembly. The bottom end of the lifting block 5 is provided with multiple circumferentially distributed sliding grooves 502. The clamping assembly includes a telescopic component c6, a slider 27, a clamping block 28, a sponge block 29, and a rubber layer 30. The slider 27 is slidably connected to the sliding grooves 502. Multiple telescopic components c6 are provided and connected to the lifting block 5 (the telescopic component c6 includes, but is not limited to, devices such as cylinders). The telescopic component c6 is connected to the slider 27. The clamping block 28 is connected to the slider 27. The sponge block 29 is connected to the clamping block 28. The rubber layer 30 is connected to the sponge block 29.

[0041] In this embodiment, the telescopic components c6 around the perimeter drive the clamping block 28 to move. The clamping block 28 moves from all sides toward the pipe to be tested, thereby clamping and fixing the pipe to be tested. The sponge block 29, together with the rubber layer 30, will deform when squeezed, thereby increasing the contact area between the clamping block 28 and the irregular pipe surface. At the same time, the rubber layer 30 has a large friction force, which enhances the clamping effect of the clamping block 28 on the pipe and ensures the stability of the clamping of the pipe to be tested.

[0042] In summary, when the present application is used, firstly, the measuring cylinder 4 is rotated to be directly below the lifting block 5; then one end of the pipeline to be measured is placed at the water inlet 501 and aligned with it, while ensuring that the top end of the pipeline to be measured is tightly attached to the bottom end of the lifting block 5, after which the clamping blocks 28 are moved by the telescopic components c6 around them, and the clamping blocks 28 around them move towards the pipeline to be measured, achieving clamping and fixing of the pipeline to be measured; the sponge block 29 cooperates with the rubber layer 30 to deform when subjected to pressure, thereby increasing the contact area of the clamping blocks 28 with the irregular pipeline surface, while the rubber layer 30 has a large friction force, enhancing the clamping effect of the clamping blocks 28 on the pipeline and ensuring the stability of the clamping of the pipeline to be measured.

[0043] Then, the lifting block 5 is lowered by the telescopic component a10, and the pipeline to be measured is lowered by the clamping assembly, so that the bottom end of the pipeline to be measured contacts and presses the rubber pad 31, and the sealing function of the bottom end of the pipeline to be measured can be achieved under the action of the rubber pad 31; then water is injected into the pipeline to be measured through the funnel 8 cooperating with the water inlet 501, until the water overflows into the funnel 8, indicating that the pipeline to be measured is filled with water, then the air pump a9 is started to inflate the inside of the annular groove 503, so that the elastic membrane 19 expands, and the elastic membrane 19 expands to block the water inlet 501, at this time, the water overflowing into the water inlet 501 and the funnel 8 will not flow back; then the lifting block 5 is raised by the telescopic component a10, and the pipeline to be measured is raised and moved away from the measuring cylinder 4, so that the pipeline to be measured is separated from the rubber pad 31, at this time, the water in the pipeline to be measured will flow into the inside of the measuring cylinder 4, so that the volume of water can be obtained, that is, the volume of the pipeline to be measured, and the cross-sectional area of the pipeline to be measured can be calculated by the formula: cross-sectional area A = V / L; V: the volume of the pipeline to be measured; L: the length of the pipeline to be measured (the volume of the rubber pad 31 can be obtained by the existing measurement method; when the volume of water is obtained by the measuring cylinder 4, the volume of the rubber pad 31 needs to be subtracted (similar to "peeling" in weighing)).

[0044] Afterwards, the motor 12 is started, the gear 13 is driven to rotate by the motor 12, the gear ring 18 is driven to rotate by the gear 13, the plate b3 is driven to rotate by the gear ring 18, the cylinder 4 and the wet perimeter measuring mechanism are driven to make circular motion by the plate b3, so that the position exchange function of the cylinder 4 and the wet perimeter measuring mechanism is realized; then, the to-be-measured pipeline is first driven to descend to a suitable height (a little higher than the initial height of the cylinder b14) by the telescopic part a10, the cylinder b14 is driven to ascend by the telescopic part b23, so that the cylinder b14 drives the air bag film 15 to extend into the to-be-measured pipeline; then, the air pump b21 is used to pump air into the shell b16, the gas enters the cylinder a22 through the air hole b2201, and then enters the cylinder b14, after that, the gas enters the air bag film 15 through the air hole a1401, so that the air bag film 15 is inflated, and then drives the plurality of rods a25 to diffuse to the four directions, until the air bag film 15 cannot continue to inflate because of contacting the inner wall of the to-be-measured pipeline; at this time, the lifting block 5 is first controlled to descend by a certain distance by the telescopic part a10, and then the to-be-measured pipeline is driven to descend by a certain distance; then, the cylinder b14 is controlled to descend by a certain distance by the telescopic part b23, so that part of the inflated air bag film 15 is located on the inner side of the to-be-measured pipeline, and at the same time, the rod a25 in the inflated air bag film 15 can press down the pipe a20 in contact with it, so that the pipe a20 moves downward, after that, the telescopic part a10 is controlled again, so that the to-be-measured pipeline moves upward and separates from the inflated air bag film 15, at this time, because the rod a25 presses down the pipe a20, under the blocking action of the pipe a20 which is not pressed down around it, the rod a25 cannot be driven to move by the air bag film 15, and then the inflated air bag film 15 cannot continue to inflate under the action of the internal gas pressure after losing the constraint of the to-be-measured pipeline, so that the shape of the to-be-measured pipeline is maintained (that is, the setting function of the inflated air bag film 15 is realized by the rod a25), after that, the rope tape is wound around the surface of the inflated air bag film 15, so that the circumference of the inflated air bag film 15, that is, the wet perimeter P (that is, the inner wall circumference of the to-be-measured pipeline cross section) of the to-be-measured pipeline can be measured; then the hydraulic diameter D h = 4A / P; A: cross-sectional area; P: wet perimeter.

[0045] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A pipe geometry detection device, characterized by, The utility model relates to a kind of cross section measuring device, including: Mobile mechanism, it includes mobile car (1) and rotating support assembly, rotating support assembly is arranged on mobile car (1); Cross section measuring mechanism, it includes measuring cylinder (4), telescopic component a (10), lifting block (5), air pump a (9), elastic film (19) and clamping assembly;Measuring cylinder (4) is arranged on rotating support assembly;Telescopic component a (10) is equipped with two and is connected with rotating support assembly;Lifting block (5) is connected with telescopic component a (10) by plate a (7);Lifting block (5) is opened at the center and is filled with water mouth (501);The inner wall of water mouth (501) is opened with annular groove (503);Elastic film (19) is arranged in annular groove (503);Air pump a (9) is arranged on lifting block (5) and is communicated with annular groove (503);Clamping assembly is equipped with multiple and is circumferentially distributed at the bottom end of lifting block (5); Wet perimeter measuring mechanism;It includes limiting assembly, cylinder a (22), cylinder b (14), telescopic component b (23), air pump b (21) and shell a (17);Cylinder a (22) is arranged on rotating support assembly;Cylinder b (14) is slidably arranged on cylinder a (22);Multiple air holes a (1401) are opened on the side wall of cylinder b (14);The surface of cylinder b (14) is provided with air bag film (15);The inner wall of air bag film (15) is provided with multiple circumferentially distributed rods a (25);Telescopic component b (23) is arranged in cylinder a (22) and is connected with cylinder b (14);Limiting assembly is arranged on cylinder a (22);Air pump b (21) is arranged on limiting assembly by shell a (17).

2. The device for detecting the geometry of a pipe according to claim 1, characterized in that, Rotating support assembly includes disc (2), cylinder c (33), gear ring (18), motor (12), gear (13), rod b (32) and plate b (3);Disc (2) is arranged on mobile car (1);Cylinder c (33) is arranged on disc (2);Gear ring (18) is rotatably arranged on the outer surface of cylinder c (33);Plate b (3) is arranged at the top end of gear ring (18);Measuring cylinder (4) and cylinder a (22) are both arranged on plate b (3);Rod b (32) is provided with two and is connected at the two ends of plate b (3) respectively;Ball is rotatably arranged at the bottom end of rod b (32);Motor (12) is arranged on disc (2) and the output end thereof is connected with gear (13);Gear (13) is engaged with gear ring (18);One side telescopic component a (10) is arranged inside cylinder c (33);The other side telescopic component a (10) is arranged on disc (2).

3. The device for detecting the geometry of a pipe according to claim 1, characterized in that, The inner side bottom end of measuring cylinder (4) is provided with rubber pad (31);Drainage opening is opened on the side wall of measuring cylinder (4);Sealing plug (11) is arranged at drainage opening.

4. The device for detecting the geometry of a pipe according to claim 1, characterized in that, The bottom end of the lifting block (5) is provided with a plurality of circumferentially distributed sliding grooves (502); the clamping assembly comprises a telescopic component c (6), a sliding block (27), a clamping block (28), a sponge block (29) and a rubber layer (30); the sliding block (27) is in sliding connection with the sliding groove (502); the telescopic component c (6) is provided with a plurality of and connected to the lifting block (5); the telescopic component c (6) is connected with the sliding block (27); the sliding block (27) is connected with the clamping block (28); the sponge block (29) is connected with the clamping block (28); the rubber layer (30) is connected with the sponge block (29).

5. The device for detecting the geometry of a pipe according to claim 1, characterized in that, The top end of the lifting block (5) is provided with a funnel (8) at the water inlet (501).

6. The device for detecting the geometry of a pipe according to claim 1, characterized in that, The limiting assembly comprises a shell b (16), a rod c (24), a pipe a (20) and a spring (26); the shell b (16) is connected to the outer surface of the cylinder a (22); the top end of the shell b (16) is circumferentially provided with a plurality of sliding holes; the pipe a (20) is slidably arranged in the sliding hole; the rod c (24) is slidably arranged in the pipe a (20); the rod c (24) is connected to the inner bottom end of the shell; the spring (26) is arranged in the inner side of the pipe a (20) and the two ends thereof are respectively connected to the pipe a (20) and the rod c (24).

7. A conduit geometry detection device according to claim 6, wherein, The sidewall of the cylinder a (22) is provided with an air hole b (2201); the air pump b (21) is in communication with the shell b (16).

Images