CN115165600B - A stainless steel tube pressure detection device - Google Patents

Abstract

The invention belongs to the technical field of performance detection of stainless steel pipes, and in particular relates to a pressure-resistant detection device for stainless steel pipes. Mechanism and the second detection mechanism; when the present invention is used for pressure resistance detection of stainless steel pipes, the scene where water exerts pressure on the inner wall of the pipe when the water hammer phenomenon begins, and the scene where the external atmosphere exerts pressure on the outer wall of the pipe before the end of the water hammer phenomenon is accurately simulated Scenario; during the detection process, personnel only need to observe whether the first detection light and the second detection light are off to accurately determine whether the pipeline is deformed, which improves the detection speed and the accuracy of the detection results, and the present invention is different for different inner diameters and outer diameters. The diameter of the pipe can be accurately detected, and the applicability is strong.

Description

A stainless steel tube pressure detection device

technical field

The invention belongs to the technical field of performance detection of stainless steel pipes, and in particular relates to a pressure-resistant detection device for stainless steel pipes.

Background technique

Stainless steel pipe is a hollow long round pipe, which is widely used in petroleum, chemical, medical, food, light industry, mechanical instrumentation and other industrial pipelines and mechanical structural components. When water is transported through stainless steel pipes, the flow rate of water suddenly changes due to some external reason, which causes water hammer, which is called water hammer. When water hammer occurs, the water in the pipe will first impact the inner wall of the stainless steel pipe, and then a vacuum area will appear in the pipe, and the external atmospheric pressure will exert pressure on the outer wall of the stainless steel pipe. The atmospheric pressure will cause the stainless steel pipe to deform, resulting in leakage. In order to avoid deformation caused by water hammer during the use of stainless steel pipes, the compressive strength of the stainless steel pipes needs to be tested before leaving the factory to ensure that the finished stainless steel pipes will not be deformed within the specified pressure range.

When the water hammer phenomenon actually occurs, the entire annular inner wall or outer wall at the corresponding position on the pipe will be under pressure. However, when the existing detection device is used for the pressure resistance test of the stainless steel pipe, the pressure can only be applied to a single point on the stainless steel pipe. , it is impossible to accurately simulate the actual working scene, and the detection accuracy is poor; and most of the current detection process is to judge whether the pipe is deformed by observing the surface of the pipe with the naked eye. There will be no obvious deformation such as wrinkles or edges, so it is not easy to be observed by the inspectors, which also reduces the accuracy of the detection results; another common method is to install a pressure sensor on the surface of the pipeline. Pressure, the sensor sends a signal, but this method needs to arrange multiple sensors around the pipeline, and the cost is relatively high.

Contents of the invention

In order to solve the above technical problems, the present invention adopts the following technical solutions: a stainless steel pipe pressure detection device, including a bottom plate, two clamping mechanisms are installed on the bottom plate, and the positions corresponding to the two clamping mechanisms are installed on the bottom plate respectively. A detection mechanism and a second detection mechanism; the first detection mechanism includes a first detection slider slidably installed on the base plate, a fixed ring is installed on the first detection slider, and a rotating ring is installed on the end surface of one side of the fixed ring for rotation, Two semi-circular rings are slidably mounted on the end surface of one side of the rotating ring along its radial direction, each semi-circular ring is threaded with a first screw rod, and the inner end of the first screw rod is fixedly mounted with a first adjusting rod, and the first adjusting rod The end part is rotatably installed with a first detection ball; the first detection mechanism also includes a first pressure applying component for applying pressure to the inner wall of the stainless steel pipe.

The second detection mechanism includes a second detection slider slidingly installed on the base plate, a fixed plate is installed on the second detection slider, a detection motor is installed on the fixed plate, and a rotating seat is fixedly installed on the output shaft of the detection motor. Two sliding seats are symmetrically slidably installed on the rotating seat, and the sliding seats and the rotating seat are connected by positioning springs; each sliding seat is threaded with a second screw, and the end of the second screw is fixedly installed with a second adjusting rod. A second detection ball is rotatably installed at the end of the second adjustment rod, and the second detection mechanism also includes a second pressure applying component for applying pressure to the outer wall of the stainless steel pipe.

As a preferred technical solution of the present invention, the clamping mechanism includes a fixed seat fixedly installed on the bottom plate, a circular seat with a driving rod is rotatably installed on the fixed seat, and the surface of the circular seat is evenly installed along its circumference. There are several cylindrical clamping blocks. The clamping blocks are electrically controlled and slide radially along the circular seat. The fixed sleeve on the clamping blocks is provided with a limit ring that coincides with its axis.

As a preferred technical solution of the present invention, the driven ring gear is fixedly installed on the rotating ring, the drive motor is fixedly installed on the fixed ring through the motor seat, and the output shaft of the drive motor is fixedly installed with a drive gear meshing with the driven ring gear. The drive gear of the driving gear; the end surface of one of the semi-circular rings is fixed with a first magnet block near its end, and the end face of the other semi-circular ring is fixed with a second magnet block corresponding to the position of the first magnet block and magnetically opposite. magnet block.

As a preferred technical solution of the present invention, the ends of the semi-circular rings are all fixedly equipped with first binding posts, and the two first binding posts in the same semi-circular ring are connected by first wires, and one of the semi-circular rings is connected by a first wire. A first detection lamp with a power supply is fixedly installed on the ring, and the first wire is connected with the first detection lamp.

As a preferred technical solution of the present invention, the first pressure applying assembly includes two first air cylinders fixedly installed on the bottom plate, and the ends of the telescopic sections of the two first air cylinders are jointly fixedly installed with a moving seat. A horizontal cylinder is fixedly installed; several first pressure-applying blocks that slide and fit along the radial direction are evenly installed on the circumferential surface of the cylinder; Press the ball, the inner end surface of the first pressure applying block is an inclined surface; the end surface of the cylinder is slid along its axial direction to install the pressing column, and the inner end surface of the pressing column fits the inner end surface of each first pressing block , the outer end surface of the pressure column is fixedly installed with a pressure plate; the bottom plate is fixedly installed with two second cylinders, and the ends of the two second cylinders are jointly fixed with a pressure seat, and a hydraulic cylinder is fixedly installed on the pressure seat , the end of the telescopic section of the hydraulic cylinder is fixedly installed with a pressure applying plate matched with the pressure bearing plate.

As a preferred technical solution of the present invention, a first stopper cooperating with the inner wall of the cylinder is fixedly installed on the first pressing block.

As a preferred technical solution of the present invention, two second terminal posts are fixedly installed on the sliding seat, and the two second terminal posts on the same sliding seat are connected by a second wire, and the sliding seat is fixedly installed There is a second detection light with a power supply, and the second wire is connected to the second detection light; the end of each second terminal is rotated by a torsion spring and a conductive rod is installed, and the ends of the corresponding two conductive rods are attached; the rotation An insulating rod is fixedly installed on the seat corresponding to each sliding seat, and the insulating rod is attached to the corresponding two conductive rods.

As a preferred technical solution of the present invention, the second pressure-applying assembly includes two pressure-applying sliders slidably mounted on the bottom plate, brackets are installed on the two pressure-applying sliders, and the two brackets are fixed together A ring seat is installed, and several second pressure blocks are evenly installed on the ring seat along its circumference, and the second pressure block slides radially along the ring seat and penetrates the ring seat; the inner end surface of the second pressure block is rotated and installed with a second Two pressure-applying balls, the outer end surface of the second pressure-applying block is an inclined surface; a pressure-applying ring is installed on the circumferential surface of the annular seat, and the position corresponding to each second pressure-applying block is fixedly installed on the inner circumferential surface of the pressure-applying ring There is an arc-shaped block that fits the outer end surface of the second pressure applying block; a pressure applying ring gear is fixedly installed on the outer circumferential surface of the pressure applying ring, and a pressure applying motor is fixedly installed on the ring seat through a motor seat, and the pressure applying motor A pressing gear meshed with the pressing ring gear is fixedly installed on the output shaft.

As a preferred technical solution of the present invention, two second stoppers are fixedly installed on the second pressing block, respectively located inside and outside the annular seat.

The present invention has at least the following beneficial effects: (1), when the stainless steel pipe is tested against pressure through the present invention, the first pressure applying component can simultaneously apply pressure to several annularly arranged points on the inner wall of the pipe, and in this state pass The clamping mechanism drives the pipeline to rotate at a certain angle, so that the entire annular area on the inner wall of the pipeline can be subjected to the pressure from the first pressure applying component, and accurately simulates the scene where water exerts pressure on the inner wall of the pipeline when the water hammer phenomenon begins; The second pressure component exerts pressure on several annularly arranged points on the outer wall of the pipe simultaneously. In this state, the pipe is driven to rotate by a certain angle through the clamping mechanism, so that the entire annular area on the outer wall of the pipe can be subjected to the second pressure. The pressure effect of the components accurately simulates the scene where the external atmosphere exerts pressure on the outer wall of the pipeline before the end of the water hammer phenomenon, thereby improving the accuracy of detection; and the invention can simulate the actual water hammer phenomenon encountered by pipelines with different inner diameters and outer diameters When the scene, the applicability is strong.

(2), when the stainless steel pipe is tested against pressure through the present invention, the first detection ball is always attached to the outer wall of the pipe and rolls along a circular path. It must protrude outward. When the first detection ball rolls to the protruding position, the two semi-circular rings will separate, and the first detection light will go out synchronously. The inspector can accurately judge the pipeline only by observing the first detection light Whether there is deformation; during the detection process, the second detection ball is always attached to the inner wall of the pipe and rolls along a circular path. When the second detection ball rolls to the recessed position, the insulating rod will push up the two conductive rods, and the second detection light will go out synchronously. The inspectors only need to observe the second detection light to accurately determine whether the pipeline is deformed, which improves the detection results. accuracy; and the present invention can accurately detect pipes with different inner diameters and outer diameters, and has strong applicability.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of a first three-dimensional structure of a stainless steel pipe pressure detection device in an embodiment of the present invention.

FIG. 2 is an enlarged schematic view of point A in FIG. 1 .

Fig. 3 is a schematic diagram of the second three-dimensional structure of the stainless steel pipe pressure detection device in the embodiment of the present invention.

Fig. 4 is a front view of the stainless steel pipe pressure detection device in the embodiment of the present invention.

FIG. 5 is an enlarged schematic view of point B in FIG. 4 .

FIG. 6 is an enlarged schematic view at point C in FIG. 4 .

Fig. 7 is a schematic diagram of the internal structure of two semicircular rings in the embodiment of the present invention.

Fig. 8 is a schematic structural view of the cylinder and the first pressure applying block in the embodiment of the present invention.

Fig. 9 is a schematic structural view of the sliding seat and the rotating seat in the embodiment of the present invention.

In the figure: 1, bottom plate; 2, clamping mechanism; 201, fixed seat; 202, circular seat; 203, clamping block; 204, limit ring; 3, first detection mechanism; 301, first detection slider ; 302, fixed ring; 303, rotating ring; 304, semi-circular ring; 305, the first screw rod; 306, the first adjusting rod; 307, the first detection ball; 308, driven ring gear; , driving gear; 311, first magnet block; 312, second magnet block; 313, first terminal; 314, first wire; 315, first detection lamp; 316, first cylinder; 317, moving seat; 318 , cylinder; 319, first pressure block; 320, first pressure ball; 321, pressure column; 322, pressure plate; 323, second cylinder; 324, pressure seat; 325, hydraulic cylinder; 326 , pressure plate; 327, first block; 4, second detection mechanism; 401, second detection slider; 402, fixed plate; 403, rotating seat; 404, sliding seat; 405, positioning spring; 406, the first Two screw rods; 407, the second adjusting rod; 408, the second detection ball; 409, the second terminal; 410, the second wire; 411, the second detection lamp; 412, the conductive rod; 413, the insulating rod; 414, the application Press slide block; 415, annular seat; 416, the second press block; 417, the second press ball; 418, press ring; 419, arc block; 420, press ring gear; 421, press motor; 422, the pressing gear; 423, the second block; 424, the detection motor.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

As shown in Figure 1, this embodiment provides a stainless steel pipe pressure detection device, including a base plate 1, two clamping mechanisms 2 are installed on the base plate 1, and the clamping mechanism 2 includes a fixed seat fixedly installed on the base plate 1 201, a circular seat 202 with a lever is installed on the fixed seat 201, and several cylindrical clamping blocks 203 are evenly installed on the surface of the circular seat 202 along its circumference, and the clamping block 203 passes through the existing electric motor. The slider drives and slides radially along the circular seat 202, and the clamping block 203 is fixedly sleeved with a limit ring 204 coincident with its axis; the positions corresponding to the two clamping mechanisms 2 on the bottom plate 1 are respectively installed with a first detection mechanism 3 and a second detection mechanism 4; the first detection mechanism 3 is used to detect the pressure resistance of the inner wall of the pipeline, and the second detection mechanism 4 is used to detect the pressure resistance of the outer wall of the pipeline.

Before the detection starts, manually hold the pipe to move the pipe to the position corresponding to the clamping block 203, so that the clamping block 203 is located inside the pipe and press the end of the pipe against the limit ring 204, and then control each clamping block 203 Move outward synchronously until each clamping block 203 fits with the inner wall of the pipe, so that the pipe can be supported and clamped by the clamping block 203; during the detection process, the circular seat 202 can be manually rotated to drive the clamping The holding block 203, the limit ring 204 and the pipe rotate at a certain angle synchronously; it should be noted that the surface of the holding block 203 is provided with a rubber anti-skid layer to improve the friction between the holding block 203 and the pipe and ensure the clamping Block 203 can drive the pipeline to rotate.

As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 6 and Fig. 7, the first detection mechanism 3 includes a first detection slider 301 slidably installed on the base plate 1, and a fixed ring 302 is installed on the first detection slider 301 A rotating ring 303 is mounted on one end surface of the fixed ring 302 for rotation, and two semi-circular rings 304 are slidably mounted on one end surface of the rotating ring 303 along its radial direction, and a first screw rod is threaded on each semi-circular ring 304 305, the first adjusting rod 306 is fixedly mounted on the inner end of the first screw rod 305, and the first detection ball 307 is installed on the end of the first adjusting rod 306; The drive motor 309 is fixedly installed by the motor base, and the drive gear 310 engaged with the driven ring gear 308 is fixedly installed on the output shaft of the drive motor 309; The first magnet block 311, the second magnet block 312 corresponding to the position of the first magnet block 311 and magnetically opposite is fixedly installed on the end surface of the other semi-circular ring 304; the end of the semi-circular ring 304 is fixedly installed with the first terminal 313, the two first terminal posts 313 in the same semi-circular ring 304 are connected by first wires 314, wherein a first detection lamp 315 with a power supply is fixedly installed on one of the semi-circular rings 304, and the first wires 314 and The first detection lamp 315 is connected; it should be noted that the power supply is connected in series with the first detection lamp 315, only when the first detection lamp 315, two first wires 314 and four first terminal posts 313 form a complete path, that is The first detection light 315 will only light up when the corresponding two first binding posts 313 are butted together.

After the pipe is firmly clamped by the clamping mechanism 2, the first detection slider 301 drives the fixed ring 302 to move horizontally until the fixed ring 302 moves to a position corresponding to the pipe and is sleeved outside the pipe. Manually attach the two half-rings 304 together, the mutual attraction of the first magnet block 311 and the second magnet block 312 makes the two half-rings 304 fit firmly, and the corresponding first wiring on the two half-rings 304 Posts 313 fit together, first detection lamp 315, two first wires 314 and four first terminal posts 313 form a complete path, and first detection lamp 315 keeps always bright; when two semicircular rings 304 mutually When affixed, the semi-circular ring 304 only has space for outward movement, but no space for inward movement; in this state, by manually turning the first screw rod 305, the first adjusting rod 306 and the first detection ball 307 are driven toward The outer wall of the pipeline moves until the first detection ball 307 is attached to the outer wall of the pipeline; then the driving gear 310 is driven by the driving motor 309 to continuously rotate, and the driving gear 310 drives the driven ring gear 308 and the rotating ring 303 to continuously rotate, and the rotation of the rotating ring 303 drives The semi-circular ring 304, the first screw rod 305, the first adjusting rod 306 and the first detection ball 307 continue to rotate, the first detection ball 307 fits on the outer wall of the pipeline and rolls along a circular path, and the first detection light 315 remains in a constant light state; When the detection starts, the inner wall of the pipeline is subjected to pressure. Once the pipeline is deformed, an outward protrusion will inevitably appear on the pipeline. When the first detection ball 307 rolls to the raised position, it is lifted up by the protrusion, and the first detection ball 307, the first adjusting rod 306, the first screw rod 305, the semi-circular ring 304 and the first magnet block 311 overcome the suction force between the first magnet block 311 and the second magnet block 312 as a whole, and the semi-circular ring 304 is displaced, and the two The corresponding first terminal 313 on the semi-circular ring 304 is separated, the complete path formed by the first wire 314, the first terminal 313 and the first detection lamp 315 is disconnected, and the first detection lamp 315 goes out synchronously. A detection light 315 can determine whether the pipeline is deformed.

As shown in Figures 3 and 8, the first detection mechanism 3 also includes a first pressure applying assembly for applying pressure to the inner wall of the stainless steel pipe, and the first pressure applying assembly includes two first cylinders 316 fixedly installed on the bottom plate 1 , the ends of the telescopic sections of the two first cylinders 316 are jointly fixedly installed with a moving seat 317, and a horizontal cylinder 318 is fixedly installed on the moving seat 317; The first pressing block 319 that is radially slidably fitted is fixedly mounted on the first pressing block 319 with a first stopper 327 that cooperates with the inner wall of the cylinder 318, and the outer end surface of the first pressing block 319 is rotatably mounted with a second A pressing ball 320, the inner end surface of the first pressing block 319 is an inclined surface; the end surface of the cylinder 318 is slid along its axial direction and a pressing column 321 is installed, and the inner end surface of the pressing column 321 is in contact with each first pressing The inner end faces of the block 319 fit together, and the outer end face of the pressure applying column 321 is fixedly equipped with a pressure bearing plate 322; two second cylinders 323 are fixedly installed on the bottom plate 1, and the ends of the two second air cylinders 323 are fixedly installed together. A pressure applying seat 324 , a hydraulic cylinder 325 is fixedly installed on the pressure applying seat 324 , and a pressure applying plate 326 matched with the pressure receiving plate 322 is fixedly installed at the end of the telescopic section of the hydraulic cylinder 325 .

After the pipeline is firmly clamped by the clamping mechanism 2, the positions of the moving seat 317, the cylinder 318 and the first pressure applying block 319 are adjusted by the first cylinder 316, and the first pressure applying block 319 is driven to reach the first detection ball 307. Corresponding to the predetermined position; by manually pushing the pressing column 321, the pressing column 321 pushes each first pressing block 319 to move outward synchronously until the first pressing ball 320 on the outer end surface of the first pressing block 319 and the pipeline The inner walls are attached; then the position of the pressure applying seat 324, the hydraulic cylinder 325 and the pressure applying plate 326 is adjusted by the second cylinder 323 until the pressing plate 326 and the pressure receiving plate 322 are attached; in this state, the hydraulic cylinder 325 applies a thrust to the pressure plate 326, the pressure plate 326 applies a thrust to the pressure column 321 through the pressure receiving plate 322, the pressure column 321 applies a thrust to the first pressure block 319, and the first pressure block 319 passes through the first pressure block The pressure ball 320 applies pressure to the inner wall of the pipeline; in this state, the clamping mechanism 2 drives the pipeline to rotate at a certain angle, so that the first pressure application ball 320 can apply pressure to all the annular areas on the inner wall of the pipeline; by controlling the hydraulic cylinder The thrust of 325 can control the pressure applied by the first pressure-applying ball 320 to the inner wall of the pipe. When the pressure applied by the first pressure-applying ball 320 to the inner wall of the pipe reaches the detection standard, the pressure will not continue to be increased. At this time, by deforming the outer wall of the pipe Inspection can determine whether the pipeline is qualified.

As shown in Figure 1, Figure 2 and Figure 9, the second detection mechanism 4 includes a second detection slider 401 slidably installed on the base plate 1, a fixed plate 402 is installed on the second detection slider 401, and a fixed plate 402 is installed on the fixed plate 402. There is a detection motor 424, and the output shaft of the detection motor 424 is fixedly equipped with a rotating seat 403, and two sliding seats 404 are installed symmetrically on the rotating seat 403, and are connected by a positioning spring 405 between the sliding seat 404 and the rotating seat 403; A second screw rod 406 is threadedly installed on the sliding seat 404, a second adjusting rod 407 is fixedly installed at the end of the second screw rod 406, and a second detection ball 408 is installed on the rotating end of the second adjusting rod 407, and the sliding seat 404 is fixedly installed There are two second terminal posts 409, and the two second terminal posts 409 on the same sliding seat 404 are connected by a second wire 410, and a second detection lamp 411 with a power supply is fixedly installed on the sliding seat 404. The wire 410 is connected to the second detection lamp 411; the end of each second terminal 409 is rotated by a torsion spring to install a conductive rod 412, and the ends of the corresponding two conductive rods 412 are attached; the rotating seat 403 corresponds to each The positions of the sliding seats 404 are all fixedly equipped with insulating rods 413, and the insulating rods 413 are attached to the corresponding two conductive rods 412; When the second detection light 411 , the two conductive rods 412 and the two second terminal posts 409 form a complete path, the second detection light 411 will be on.

After the pipe is firmly clamped by the clamping mechanism 2, the second detection slider 401 drives the fixed plate 402, the detection motor 424, the rotating seat 403 and the sliding seat 404 to move synchronously until the rotating seat 403 and the sliding seat 404 enter the interior of the pipe and After reaching the predetermined position, the second adjusting rod 407 and the second detection ball 408 are driven to move to the inner wall of the pipeline by manually rotating the second screw rod 406 until the second detection ball 408 fits with the inner wall of the pipeline; the detection motor 424 drives the rotating seat 403 and When the sliding seat 404 rotates slowly, since the positioning spring 405 plays a supporting role on the sliding seat 404 and the sliding seat 404 is not subjected to other external forces except gravity, the sliding seat 404 will not slide, the second wire 410, the second detection lamp 411, two conductive rods 412, and two second terminal posts 409 form a complete path, and the second detection light 411 is always on; after the detection starts, when the pipeline is deformed under the action of external force, the internal surface of the pipeline will inevitably appear. Concave, when the second detection ball 408 rolls to the position corresponding to the concave, the second detection ball 408, the second adjustment rod 407, the second screw rod 406 and the sliding seat 404 will overcome the elastic force of the positioning spring 405 and slide as a whole, The second terminal post 409 and the conductive rod 412 move synchronously with the sliding seat 404, the insulating rod 413 overcomes the elastic force of the torsion spring and pushes away the two conductive rods 412, the second conducting wire 410, the second detection lamp 411, the two conductive rods 412 and The path formed by the two second binding posts 409 is disconnected, and the second detection lamp 411 is simultaneously turned off. The inspector only needs to observe the second detection lamp 411 to accurately determine whether the pipeline is deformed.

As shown in Figures 1 to 5, the second detection mechanism 4 also includes a second pressure application assembly for applying pressure to the outer wall of the stainless steel pipe, and the second pressure application assembly includes two pressure application sliders slidably installed on the bottom plate 1 414, brackets are installed on the two pressing sliders 414, and an annular seat 415 is fixedly installed between the two brackets, and several second pressing blocks 416 are evenly installed on the annular seat 415 along its circumferential direction. The pressing block 416 slides radially through the annular seat 415 along the annular seat 415, and the second pressing block 416 is fixedly installed with two second stoppers 423 respectively located on the inner and outer sides of the annular seat 415; the inner end surface of the second pressing block 416 A second pressing ball 417 is installed on the upper rotation, and the outer end surface of the second pressing block 416 is an inclined surface; a pressing ring 418 is installed on the circumferential surface of the annular seat 415, and the inner circumferential surface of the pressing ring 418 corresponds to each The position of the second pressure applying block 416 is fixedly installed with an arc-shaped block 419 that fits with the outer end surface of the second pressure applying block 416; A pressure-applying motor 421 is fixedly installed on the 415 through a motor base, and a pressure-applying gear 422 meshing with the pressure-applying ring gear 420 is fixedly installed on the output shaft of the pressure-applying motor 421 .

After the pipe is firmly clamped by the clamping mechanism 2, the ring seat 415 and the second pressure block 416 are driven to move to the position corresponding to the second detection ball 408 by the pressure applying slider 414. Each arc-shaped block 419 moves, and the arc-shaped block 419 pushes the second pressure-applying block 416 to move after the arc-shaped block 419 fits with the second pressure-applying block 416 until the second pressure-applying ball 417 on the inner end surface of each second pressure-applying block 416 is In the above process, the pressure applying motor 421 is closed, and the motor shaft can be driven to rotate by an external force; then the pressure applying motor 421 is turned on, and the pressure applying motor 421 supplies pressure to the ring gear 420 and the pressure applying gear 422 through the pressure applying gear 422. The pressure ring 418 applies a thrust, and the pressure ring 418 transmits the thrust to the arc block 419 and applies a thrust to the second pressure block 416 through the arc block 419, and finally the second pressure block 416 passes through the second pressure ball 417 Apply pressure to the outer wall of the pipeline; in this state, the clamping mechanism 2 drives the pipeline to rotate at a certain angle, so that the second pressure-applying ball 417 can apply pressure to every part of the annular area on the outer wall of the pipeline; through the drive of the pressure-applying motor 421 force, that is, to control the pressure exerted by the second pressure-applying ball 417 on the outer wall of the pipe. When the pressure applied by the second pressure-applying ball 417 to the outer wall of the pipe reaches the detection standard, the pressure will not continue to increase. At this time, the deformation detection of the inner wall of the pipe is It can be judged whether the pipeline is qualified or not.

The working process of the anti-pressure detection device for stainless steel pipes in this embodiment is as follows: Firstly, the two pipes are respectively clamped by the clamping mechanism 2, and then pressure is applied to the inner wall of one of the pipes by the first pressure applying component, and the pressure is applied by the second pressure applying component. The pressure component exerts pressure on the outer wall of the other pipe, and then drives the two pipes to rotate at a certain angle through the clamping mechanism 2; the inspector can judge whether the pipe is deformed by observing whether the first detection light 315 and the second detection light 411 are off; After the first inspection is completed, exchange the positions of the two pipes and perform the inspection again.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. The utility model provides a nonrust steel pipe resistance to compression detection device, includes bottom plate (1), installs two fixture (2) on bottom plate (1), and first detection mechanism (3) and second detection mechanism (4), its characterized in that are installed respectively to the position that corresponds two fixture (2) on bottom plate (1): the first detection mechanism (3) comprises a first detection sliding block (301) which is slidably mounted on the bottom plate (1), a fixing ring (302) is mounted on the first detection sliding block (301), a rotating ring (303) is rotatably mounted on one side end face of the fixing ring (302), two semicircular rings (304) are slidably mounted on one side end face of the rotating ring (303) along the radial direction of the rotating ring, a first screw (305) is mounted on each semicircular ring (304) in a threaded manner, a first adjusting rod (306) is fixedly mounted at the inner end of each first screw (305), and a first detection ball (307) is rotatably mounted at the end part of each first adjusting rod (306); the first detection mechanism (3) further comprises a first pressure applying assembly for applying pressure to the inner wall of the stainless steel pipe, and the first pressure applying assembly can apply pressure to a plurality of annularly arranged points on the inner wall of the pipeline at the same time;

first binding posts (313) are fixedly mounted at the end parts of the semicircular rings (304), two first binding posts (313) in the same semicircular ring (304) are connected through a first wire (314), a first detection lamp (315) with a power supply is fixedly mounted on one semicircular ring (304), and the first wire (314) is connected with the first detection lamp (315);

the second detection mechanism (4) comprises a second detection sliding block (401) which is slidably mounted on the base plate (1), a fixing plate (402) is mounted on the second detection sliding block (401), a detection motor (424) is mounted on the fixing plate (402), a rotating seat (403) is fixedly mounted on an output shaft of the detection motor (424), two sliding seats (404) are symmetrically slidably mounted on the rotating seat (403), and the sliding seats (404) are connected with the rotating seat (403) through positioning springs (405); a second screw (406) is installed on each sliding seat (404) in a threaded manner, a second adjusting rod (407) is fixedly installed at the end of the second screw (406), a second detecting ball (408) is installed at the end of the second adjusting rod (407) in a rotating manner, the second detecting mechanism (4) further comprises a second pressing component for applying pressure to the outer wall of the stainless steel pipe, and the second pressing component can apply pressure to a plurality of annularly arranged points on the outer wall of the pipeline at the same time;

two second binding posts (409) are fixedly mounted on the sliding seat (404), the two second binding posts (409) on the same sliding seat (404) are connected through a second lead (410), a second detection lamp (411) with a power supply is fixedly mounted on the sliding seat (404), and the second lead (410) is connected with the second detection lamp (411);

the first pressure applying assembly comprises two first air cylinders (316) fixedly mounted on the bottom plate (1), the end parts of the telescopic sections of the two first air cylinders (316) are fixedly mounted with a moving seat (317) together, and a horizontal cylinder (318) is fixedly mounted on the moving seat (317); a plurality of first pressing blocks (319) which are in sliding fit along the radial direction of the cylinder (318) are uniformly arranged on the circumferential surface of the cylinder along the circumferential direction, first pressing balls (320) are rotatably arranged on the outer end surface of the first pressing blocks (319), and the inner end surface of each first pressing block (319) is an inclined surface; the end surface of the cylinder (318) is provided with a pressure application column (321) in a sliding way along the axial direction, the inner end surface of the pressure application column (321) is attached to the inner end surface of each first pressure application block (319), and the outer end surface of the pressure application column (321) is fixedly provided with a pressure bearing plate (322); two second air cylinders (323) are fixedly installed on the base plate (1), the end parts of the two second air cylinders (323) are jointly and fixedly installed with a pressure applying seat (324), a hydraulic cylinder (325) is fixedly installed on the pressure applying seat (324), and a pressure applying plate (326) matched with the pressure bearing plate (322) is fixedly installed at the end part of a telescopic section of the hydraulic cylinder (325);

the second pressure applying assembly comprises two pressure applying sliding blocks (414) which are slidably mounted on the base plate (1), supports are mounted on the two pressure applying sliding blocks (414), an annular seat (415) is fixedly mounted between the two supports together, a plurality of second pressure applying blocks (416) are uniformly mounted on the annular seat (415) along the circumferential direction of the annular seat, and the second pressure applying blocks (416) radially slide along the annular seat (415) and penetrate through the annular seat (415); a second pressure applying ball (417) is rotatably arranged on the inner end surface of the second pressure applying block (416), and the outer end surface of the second pressure applying block (416) is an inclined surface; the circumferential surface of the annular seat (415) is rotatably provided with a pressure applying ring (418), and the inner circumferential surface of the pressure applying ring (418) is fixedly provided with arc-shaped blocks (419) which are attached to the outer end surfaces of the second pressure applying blocks (416) at positions corresponding to the second pressure applying blocks (416); a pressing gear ring (420) is fixedly arranged on the outer circumferential surface of the pressing ring (418), a pressing motor (421) is fixedly arranged on the annular seat (415) through a motor seat, and a pressing gear (422) meshed with the pressing gear ring (420) is fixedly arranged on an output shaft of the pressing motor (421).

2. The stainless steel pipe compression resistance detection device according to claim 1, characterized in that: fixture (2) including fixed mounting fixing base (201) on bottom plate (1), rotate on fixing base (201) and install circular seat (202) that have the driving lever, circular seat (202) surface evenly installs a plurality of columniform grip block (203) along its circumference, grip block (203) are electric control and follow circular seat (202) radial slip, fixed cover is equipped with spacing ring (204) rather than the axis coincidence on grip block (203).

3. The stainless steel pipe compression resistance detection device according to claim 1, characterized in that: a driven gear ring (308) is fixedly mounted on the rotating ring (303), a driving motor (309) is fixedly mounted on the fixed ring (302) through a motor base, and a driving gear (310) meshed with the driven gear ring (308) is fixedly mounted on an output shaft of the driving motor (309); a first magnet block (311) is fixedly arranged on the end face of one semicircular ring (304) close to the end part of the semicircular ring, and a second magnet block (312) which corresponds to the first magnet block (311) in position and is opposite in magnetism is fixedly arranged on the end face of the other semicircular ring (304).

4. The stainless steel pipe compression resistance detection device according to claim 1, characterized in that: a first stop block (327) matched with the inner wall of the cylinder (318) is fixedly arranged on the first pressing block (319).

5. The stainless steel pipe compression resistance detection device according to claim 1, characterized in that: the end part of each second binding post (409) is rotatably provided with a conductive rod (412) through a torsion spring, and the end parts of the two corresponding conductive rods (412) are attached to each other; an insulating rod (413) is fixedly installed on the rotating seat (403) corresponding to the position of each sliding seat (404), and the insulating rods (413) are attached to the two corresponding conducting rods (412).

6. The stainless steel pipe compression resistance detection device according to claim 1, characterized in that: and two second stop blocks (423) which are respectively positioned on the inner side and the outer side of the annular seat (415) are fixedly arranged on the second pressing block (416).

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