Seamless welded pipe facilitating inner wall gap detection

Abstract

The utility model discloses a seamless welded pipe convenient to detect inner wall gaps, and particularly relates to the technical field of seamless welded pipes, the seamless welded pipe comprises a seamless welded pipe body, two ends of the seamless welded pipe body are respectively provided with a detection block, one side of each detection block is fixedly provided with an air inlet pipe, and the other side of each detection block is fixedly provided with a pressure detection meter. A one-way valve is arranged on one side of the air inlet pipe. According to the seamless welded pipe capable of conveniently detecting the inner wall gap, in actual work, the sealing rings of different sizes are in threaded connection with the corresponding connecting grooves, so that the sealing rings of different sizes can be sequentially connected in a sleeved mode, the two ends of the seamless welded pipe of different sizes can be sealed, the connecting rod is moved, and the seamless welded pipe can be conveniently detected. According to the technical scheme, the movable plate is driven to move by the driving device, so that the two connecting rods are connected, the detection blocks are prevented from falling off when sealing the seamless welded pipes with different lengths, and the inner walls of the seamless welded pipes with different sizes can be conveniently detected.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless welded pipes, in particular to a seamless welded pipe convenient for detecting inner wall gaps. Background Art

[0002] A seamless pipe is a steel pipe without weld seams, which is manufactured by hot working methods such as piercing and hot rolling. Seamless pipes are widely used, mainly as pipes for conveying fluids or structural components. General seamless pipes are rolled from low-alloy structural steel, ordinary carbon structural steel or alloy structural steel. When seamless pipes are produced, their inner walls need to be detected to check whether there are gaps in the inner walls of seamless welded pipes.

[0003] After retrieval, for example, the utility model with the application number 202321132591.9 discloses a seamless welded pipe convenient for detecting inner wall gaps, including a pipe. An air delivery component is arranged at one end of the pipe, and a sealing component is arranged at the other end of the pipe. The air delivery component includes a first round block, and a first annular groove is opened on the side wall of the first round block. A first rubber ring is clamped inside the first annular groove. When this utility model is in use, the first round block and the second round block need to be connected to both ends of the pipe to seal both ends of the pipe. However, during the production process of seamless welded pipes, their sizes are different, and this utility model is not convenient for detecting inner wall gaps of seamless welded pipes with different sizes. Therefore, to solve the above defects, the inventor of this application proposes a seamless welded pipe convenient for detecting inner wall gaps. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a seamless welded pipe convenient for detecting inner wall gaps, which can effectively solve the problem in the prior art that it is not convenient to detect inner wall gaps of seamless welded pipes with different sizes.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A seamless welded pipe convenient for detecting inner wall gaps, including a seamless welded pipe body. Detection blocks are arranged at both ends of the seamless welded pipe body. An air inlet pipe is fixedly installed on one side of each of the two detection blocks, and a pressure detection gauge is fixedly installed on the other side of each of the two detection blocks. A one-way valve is arranged on one side of the air inlet pipe, and the air inlet pipe penetrates through one of the detection blocks. Movable sleeves are arranged on the opposite sides of the two detection blocks;

[0007] A plurality of connecting grooves are opened on one side of the outer surface of the detection block. A sealing ring is threadedly connected inside the connecting groove. Rubber sealing rings are fixedly installed on both the outer wall and the inner wall of the sealing ring. Two first sliding rods are fixedly installed inside the movable sleeve, and a moving plate is movably connected to the outer surfaces of the two first sliding rods;

[0008] On the inner side of the movable sleeve, two first springs are fixedly installed, and both of the two first springs are fixedly connected to the moving plate. One side of the moving plate is fixedly installed with a connecting rod. Fixing grooves and mounting grooves are respectively formed at opposite ends of the two connecting rods.

[0009] Preferably, four movable arms are movably connected inside the detection block. On one side of the four movable arms inside the detection block, driving rods are fixedly installed. On one side of the four movable arms outside the detection block, fixing plates are fixedly installed. On one side of the outer surface of the intake pipe inside the detection block, a driving plate is movably connected. Four driving holes are formed on one side of the driving plate, and the four driving holes are respectively movably connected to the four driving rods. On one side of the outer surface of the intake pipe inside the detection block, a gear is movably connected, and the gear is fixedly connected to the driving plate. On one side inside the detection block, a threaded rod is movably installed, and on the other side inside the detection block, a second sliding rod is fixedly installed. A rack is threadedly connected to the outer surface of the threaded rod, and the rack is engaged with the gear. The rack is movably connected to the second sliding rod.

[0010] Preferably, the movable sleeve is fixedly connected to the movable arm.

[0011] Preferably, a rotating handle is fixedly installed at one end of the threaded rod extending outside the detection block.

[0012] Preferably, connection holes are respectively formed on both sides inside the fixing groove. A partition plate is fixedly installed inside the mounting groove, and lifting rods are fixedly installed on both sides of the partition plate. Lifting plates are movably connected to the outer surfaces of the two lifting rods, and limiting rods are fixedly installed on one side of each of the two lifting plates. Second springs are fixedly installed on both sides of the partition plate, and the two second springs are respectively fixedly connected to the two lifting plates.

[0013] Preferably, the sizes of the two limiting rods are the same as those of the two connection holes respectively.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a seamless welded pipe convenient for detecting inner wall gaps. By arranging a detection block, in actual work, by threadedly connecting sealing rings of different sizes with corresponding connection grooves, the sealing rings of different sizes can be sleeved in sequence, so as to seal both ends of seamless welded pipes of different sizes. Moving the connecting rod to drive the moving plate to move can connect the two connecting rods, so as to prevent the detection block from falling off when sealing seamless welded pipes of different lengths, thereby facilitating the detection of the inner walls of seamless welded pipes of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 Structural schematic diagram of the sealing ring of the present utility model;

[0018] Figure 3 Cross-sectional structural schematic diagram of the movable sleeve of the present utility model;

[0019] Figure 4 Cross-sectional structural schematic diagram of the detection block of the present utility model;

[0020] Figure 5 Cross-sectional structural schematic diagram of the connecting rod of the present utility model.

[0021] In the figure: 1, seamless steel pipe body; 2, detection block; 3, pressure detection gauge; 4, air inlet pipe; 5, one-way valve; 6, movable sleeve; 201, connecting groove; 202, sealing ring; 203, rubber sealing ring; 601, first sliding rod; 602, first spring; 603, moving plate; 604, connecting rod; 401, driving plate; 402, gear; 403, movable arm; 404, fixing plate; 405, driving rod; 406, driving hole; 407, threaded rod; 408, second sliding rod; 409, rack; 6041, fixing groove; 6042, connecting hole; 6043, installation groove; 6044, lifting rod; 6045, second spring; 6046, lifting plate; 6047, limiting rod. Detailed implementation manners

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0023] The present utility model discloses a seamless steel pipe convenient for detecting inner wall gaps, as Figures 1-5 shown, including a seamless steel pipe body 1. Detection blocks 2 are provided at both ends of the seamless steel pipe body 1. An air inlet pipe 4 is fixedly installed on one side of the two detection blocks 2, and a pressure detection gauge 3 is fixedly installed on the other side of the two detection blocks 2. A one-way valve 5 is provided on one side of the air inlet pipe 4. By connecting the pipeline of an external air pump to the air inlet pipe 4, air can be filled into the seamless steel pipe body 1 through the air inlet pipe 4, and the numerical change of the pressure detection gauge 3 can be observed. According to the numerical change of the pressure detection gauge 3, it can be judged whether there are gaps in the inner wall of the seamless steel pipe body 1, so as to avoid the use of the seamless steel pipe body 1 with potential hazards. And the air inlet pipe 4 penetrates through one of the detection blocks 2, and movable sleeves 6 are provided on the opposite sides of the two detection blocks 2.

[0024] On one side of the outer surface of the detection block 2, a plurality of connecting grooves 201 with different sizes are opened. A sealing ring 202 is threadedly connected inside the connecting groove 201, and the sealing ring 202 corresponds to the connecting groove 201.

[0025] Rubber sealing rings 203 are fixedly installed on both the outer wall and the inner wall of the sealing ring 202. The rubber sealing ring 203 on the inner wall can enhance the sealing performance between the sealing ring 202 and the sealing ring 202, while the rubber sealing ring 203 on the outer wall can enhance the sealing performance between the sealing ring 202 and the seamless welded pipe body 1.

[0026] Two first sliding rods 601 are fixedly installed inside the movable sleeve 6. A moving plate 603 is movably connected to the outer surfaces of the two first sliding rods 601, and the moving plate 603 can move along the two first sliding rods 601.

[0027] Two first springs 602 are fixedly installed on one side inside the movable sleeve 6, and both of the two first springs 602 are fixedly connected to the moving plate 603. A connecting rod 604 is fixedly installed on one side of the moving plate 603. When the connecting rod 604 moves, it can drive the moving plate 603 to move, and then the moving plate 603 can compress or stretch the first springs 602.

[0028] Fixing grooves 6041 and installation grooves 6043 are respectively formed at the opposite ends of the two connecting rods 604.

[0029] Four movable arms 403 are movably connected inside the detection block 2. Drive rods 405 are fixedly installed on one side inside the detection block 2 for the four movable arms 403, and fixing plates 404 are fixedly installed on the side outside the detection block 2 for the four movable arms 403.

[0030] A drive plate 401 is movably connected to the outer surface on one side of the intake pipe 4 inside the detection block 2, and the drive plate 401 can rotate around the intake pipe 4.

[0031] Four drive holes 406 are formed on one side of the drive plate 401, and the four drive holes 406 are respectively movably connected to the four drive rods 405. When the drive plate 401 rotates, it can push the four movable arms 403 to move. When the four movable arms 403 move, they can drive the fixing plate 404 to move to clamp seamless welded pipe bodies 1 of different sizes. The movable sleeve 6 is fixedly connected to the movable arms 403.

[0032] A gear 402 is movably connected to the outer surface on one side of the intake pipe 4 inside the detection block 2, and the gear 402 is fixedly connected to the drive plate 401. When the gear 402 rotates, it can drive the drive plate 401 to rotate.

[0033] A threaded rod 407 is movably installed on the inner side of the detection block 2, and a second sliding rod 408 is fixedly installed on the other inner side of the detection block 2. A rack 409 is threadedly connected to the outer surface of the threaded rod 407, and the rack 409 meshes with the gear 402. The rack 409 is movably connected to the second sliding rod 408. By rotating the threaded rod 407, the rack 409 can be moved, and when the rack 409 moves, the gear 402 can be driven to rotate.

[0034] Connection holes 6042 are formed on both sides inside the fixing groove 6041. A partition is fixedly installed inside the installation groove 6043, and lifting rods 6044 are fixedly installed on both sides of the partition. Lifting plates 6046 are movably connected to the outer surfaces of the two lifting rods 6044, and the lifting plates 6046 can lift along the lifting rods 6044.

[0035] Moreover, a limiting rod 6047 is fixedly installed on one side of each of the two lifting plates 6046, and second springs 6045 are fixedly installed on both sides of the partition. The two second springs 6045 are respectively fixedly connected to the two lifting plates 6046.

[0036] The working principle of the present utility model is as follows: According to the size of the seamless welded pipe body 1 to be detected, a plurality of sealing rings 202 are sequentially threadedly connected to a plurality of connecting grooves 201, and then the sealing rings 202 are inserted into both ends of the seamless welded pipe body 1 to seal both ends of the seamless welded pipe body 1. Rotate the threaded rod 407 to drive the rack 409 to move. When the rack 409 moves, the gear 402 can be driven to rotate, and then the driving plate 401 can be driven to rotate, so that the four movable arms 403 drive the four fixing plates 404 to move until the fixing plates 404 contact the outer surface of the seamless welded pipe body 1. Pull the two connecting rods 604 closer to each other until the limiting rods 6047 are inserted into the connection holes 6042. Then connect the pipeline of an external air pump to the air inlet pipe 4, inflate the inside of the seamless welded pipe body 1, and judge whether there are gaps in the inner wall of the seamless welded pipe body 1 by observing the numerical change of the pressure detection table 3, so as to prevent the seamless welded pipe body 1 with potential hazards from being used.

[0037] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A seamless welded pipe facilitating the detection of inner wall gaps, comprising a seamless welded pipe body (1), characterized in that: Both ends of the seamless steel pipe body (1) are provided with detection blocks (2). On one side of the two detection blocks (2), an air inlet pipe (4) is fixedly installed, and on the other side of the two detection blocks (2), a pressure detection gauge (3) is fixedly installed. A one-way valve (5) is arranged on one side of the air inlet pipe (4), and the air inlet pipe (4) penetrates through one of the detection blocks (2). On the opposite sides of the two detection blocks (2), movable sleeves (6) are provided. On one side of the outer surface of the detection block (2), a plurality of connecting grooves (201) are opened. A sealing ring (202) is threadedly connected inside the connecting groove (201). Rubber sealing rings (203) are fixedly installed on both the outer wall and the inner wall of the sealing ring (202). Two first sliding rods (601) are fixedly installed inside the movable sleeve (6). A moving plate (603) is movably connected to the outer surfaces of the two first sliding rods (601). On one side inside the movable sleeve (6), two first springs (602) are fixedly installed, and both of the two first springs (602) are fixedly connected to the moving plate (603). A connecting rod (604) is fixedly installed on one side of the moving plate (603). Fixing grooves (6041) and installation grooves (6043) are respectively opened at the opposite ends of the two connecting rods (604).

2. The seamless steel pipe for conveniently detecting inner wall gaps according to claim 1, wherein: Four movable arms (403) are movably connected inside the detection block (2). On one side inside the detection block (2) where the four movable arms (403) are located, driving rods (405) are fixedly installed. On the side outside the detection block (2) where the four movable arms (403) are located, fixing plates (404) are fixedly installed. On one side of the outer surface of the air inlet pipe (4) inside the detection block (2), a driving plate (401) is movably connected. Four driving holes (406) are opened on one side of the driving plate (401), and the four driving holes (406) are respectively movably connected to the four driving rods (405). On one side of the outer surface of the air inlet pipe (4) inside the detection block (2), a gear (402) is movably connected, and the gear (402) is fixedly connected to the driving plate (401). A threaded rod (407) is movably installed on one side inside the detection block (2), and a second sliding rod (408) is fixedly installed on the other side inside the detection block (2). A rack (409) is threadedly connected to the outer surface of the threaded rod (407), and the rack (409) meshes with the gear (402). The rack (409) is movably connected to the second sliding rod (408).

3. The seamless steel pipe for conveniently detecting inner wall gaps according to claim 2, characterized in that: The movable sleeve (6) is fixedly connected to the movable arm (403).

4. The seamless steel pipe for conveniently detecting inner wall gaps according to claim 2, wherein: One end of the threaded rod (407) extending outside the detection block (2) is fixedly installed with a turning handle.

5. The seamless steel pipe for conveniently detecting inner wall gaps according to claim 1, characterized in that: Both sides inside the fixed groove (6041) are provided with connection holes (6042). A partition is fixedly installed inside the installation groove (6043), and lifting rods (6044) are fixedly installed on both sides of the partition. Lifting plates (6046) are movably connected to the outer surfaces of the two lifting rods (6044), and limiting rods (6047) are fixedly installed on one side of each of the two lifting plates (6046). Second springs (6045) are fixedly installed on both sides of the partition, and the two second springs (6045) are fixedly connected to the two lifting plates (6046) respectively.

6. The seamless steel pipe for conveniently detecting inner wall gaps according to claim 5, wherein: The sizes of the two limiting rods (6047) are the same as those of the two connection holes (6042) respectively.

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