Head sealing equipment for hydrostatic test of pipe

Abstract

The utility model discloses end socket equipment for a pipe hydrostatic test, which comprises a pipe body, a sealing structure, a first rotating structure, a second rotating structure and a rotating shaft, and is provided with the sealing structure, the first rotating structure and the second rotating structure, so that a first grip and a second grip are respectively held by a left hand and a right hand; the right hand presses a pressing rod downwards through the thumb, the pressing rod drives a clamping block to move through a straight rod, the clamping block moves downwards through limiting of a rectangular groove, a sliding groove and a limiting groove, a spring is extruded to be shrunk, the clamping block breaks away from limiting of a clamping groove, and a first rotating frame and a second rotating frame can be opened through a rotating shaft; and at the moment, limiting of the protruding block of the pipe body is relieved, the first rotating frame can drive the circular plate to move, sealing of the pipe body is relieved, and by means of cooperation of the protruding block of the pipe body and the limiting block, the effect of sealing the end of the pipe body is achieved through the sealing ring.

Description

Technical Field

[0001] The utility model relates to the relevant field of pipe end caps, in particular to an end cap device used for a pipe hydrostatic test. Background Art

[0002] The pipe hydrostatic testing machine is used to measure the pressure-resistant failure time or the maximum pressure value of instantaneous explosion of various pipes such as thermoplastic pipes, composite pipes and aluminum-plastic composite pipes under long-term constant internal pressure and constant temperature. It is an essential testing equipment for plastic pipe manufacturers and testing institutions.

[0003] The Chinese patent with the patent number CN218271658U discloses a "pipe sealing device for hydrostatic testing", which includes a clamping seat and a clamp, and the clamping seat and the clamp are threadedly connected to seal the end of the pipe; the clamp includes four cross-connected semicircular ring bodies, and the clamp and the clamp cooperate with each other to seal the pipe end. The clamp applies a force in the axial direction of the pipe and a force perpendicular to the axial direction of the pipe to the pipe, so that the pipe end is completely sealed, and the sealing device is not easy to fall off during use;

[0004] Although the above-mentioned pipe sealing device for hydrostatic testing has certain advantages in terms of sealing ability, the pipe end is sealed by a threaded connection between the connector and the clamp, and the hydrostatic test of the pipe requires frequent disassembly and assembly of bolts, which is too troublesome and inconvenient for hydrostatic testers to use. Utility Model Content

[0005] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a head sealing device for a hydrostatic test of a pipe.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a head sealing device for hydrostatic test of pipes, comprising a pipe body, a sealing structure, a first rotating structure, a second rotating structure and a rotating shaft, the front end face of the pipe body is fitted with the sealing structure, the left and right sides of the front end face of the sealing structure are respectively connected to the first rotating structure and the second rotating structure, the lower sides of the first rotating structure and the second rotating structure are rotatably connected through the rotating shaft, the sealing structure comprises a sealing ring, a circular plate and a limit block, the front end face of the sealing ring is fixedly connected to the circular plate, the limit blocks are fixed on the left and right sides of the middle part of the circular plate, the front end face of the circular plate is fixedly connected to the first rotating structure, and the rear end face of the sealing ring is tightly fitted with the pipe body.

[0007] Optionally, the first rotating structure includes a first rotating frame, a first fixed seat, a first handle, a fixing plate, an arc groove and a clamping groove, the first fixed seat is fixed to the left side of the upper end surface of the first rotating frame, the first handle is fixed to the middle part of the upper end surface of the first fixed seat, the fixing plate is fixed to the right side of the upper end surface of the first rotating frame, the middle part of the right end surface of the fixing plate is provided with an arc groove, the upper end surface of the inner wall of the arc groove is provided with a clamping groove, the front end surface of the inner wall of the first rotating frame is fixedly connected to the circular plate, and the rear end surface of the inner wall of the first rotating frame is tightly fitted with the pipe body.

[0008] Optionally, the second rotating structure includes a second rotating frame, a second fixed seat, a second handle, a connecting block, a rectangular groove, a sliding groove and a transmission structure, the second fixed seat is fixed to the upper end surface of the second rotating frame, the second handle is fixed to the right side of the middle part of the upper end surface of the second fixed seat, the middle part of the left end surface of the second fixed seat is fixedly connected to the connecting block, the upper end surface of the connecting block is provided with a rectangular groove, the middle part of the left end surface of the second fixed seat is provided with a sliding groove, the inner wall of the rectangular groove is connected to the transmission structure, and the front and rear ends of the inner wall of the second rotating frame are tightly fitted with the circular plate and the pipe body respectively.

[0009] Optionally, the transmission structure includes a spring, a block, a straight rod and a pressing rod, one end of the spring is fixedly connected to the lower end surface of the inner wall of the rectangular groove, and the other end of the spring is fixedly connected to the block, the middle part of the right end surface of the block is fixedly connected to the straight rod, the right end surface of the straight rod is fixedly connected to the pressing rod, and the upper end of the pressing rod passes through the second fixed seat.

[0010] Optionally, the outer front end of the tube body is convex, and the outer wall of the convexity is inclined from the front end to the rear end, so that the sealing ring can fit tightly with the tube body through the rotation cooperation of the first rotating frame and the second rotating frame and the limiting cooperation of the protrusion and the limiting block.

[0011] Optionally, the inner walls of the arc groove and the clamping groove are respectively fitted with the connecting block and the clamping block, which is conducive to limiting the first rotating frame and the second rotating frame.

[0012] Optionally, the left upper end surface of the straight rod is in contact with the limiting groove and slidably cooperates with the limiting groove. The limiting groove is arranged in the middle of the right end surface of the connecting block, so that the straight rod can drive the clamping block to slide on the inner wall of the rectangular groove.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses a head sealing device for a hydrostatic test of a pipe. The sealing structure, the first rotating structure and the second rotating structure are provided. The left and right hands hold the first grip and the second grip respectively. The right hand presses the pressing rod downwards with the thumb. The pressing rod drives the clamping block to move through the straight rod. The clamping block moves downwards by means of the limitation of the rectangular groove, the sliding groove and the limiting groove, and the spring is squeezed to shrink. The clamping block is separated from the limitation of the clamping groove. The first rotating frame and the second rotating frame can be opened by means of the rotating shaft, so as to achieve the effect of facilitating disassembly and assembly. At this time, the limitation of the protrusion of the pipe body is released, so that the first rotating frame can drive the circular plate to move, and the sealing of the pipe body is released. The cooperation of the protrusion of the pipe body and the limiting block is utilized, and the sealing effect of the end of the pipe body is achieved through the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a top view of the structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the first rotating structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the second rotating structure of the utility model;

[0020] Figure 6 It is a schematic diagram of the transmission structure of the utility model.

[0021] Among them: pipe body-1, sealing structure-2, first rotating structure-3, second rotating structure-4, rotating shaft-5, sealing ring-21, circular plate-22, limiting block-23, first rotating frame-31, first fixed seat-32, first handle-33, fixed plate-34, arc groove-35, clamping groove-36, second rotating frame-41, second fixed seat-42, second handle-43, connecting block-44, rectangular groove-45, sliding groove-46, transmission structure-47, spring-471, clamping block-472, straight rod-473, pressing rod-474, limiting groove-475. DETAILED DESCRIPTION

[0022] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0023] See also Figure 1 , Figure 2 and Figure 3The utility model provides a head sealing device for a hydrostatic test of a pipe, comprising a pipe body 1, a sealing structure 2, a first rotating structure 3, a second rotating structure 4 and a rotating shaft 5. The front end face of the pipe body 1 fits with the sealing structure 2, and the left and right sides of the front end face of the sealing structure 2 are respectively connected with the first rotating structure 3 and the second rotating structure 4, and the lower sides of the first rotating structure 3 and the second rotating structure 4 are rotatably connected through the rotating shaft 5. The sealing structure 2 comprises a sealing ring 21, a circular plate 22 and a limiting block 23. The front end face of the sealing ring 21 is fixedly connected with the circular plate 22, and the limiting blocks 23 are fixed on the left and right sides of the middle part of the circular plate 22. The front end face of the circular plate 22 is fixedly connected with the first rotating structure 3, and the rear end face of the sealing ring 21 fits tightly with the pipe body 1. The outer front end of the pipe body 1 is convex, and the outer wall of the convexity is inclined from the front end to the rear end. The sealing ring 21 can fit tightly with the pipe body 1 by utilizing the rotation cooperation of the first rotating frame 31 and the second rotating frame 41 and the limiting cooperation of the convex block and the limiting block 23.

[0024] See also Figure 4 and Figure 5 The utility model provides a head sealing device for hydrostatic test of pipes, wherein the first rotating structure 3 comprises a first rotating frame 31, a first fixed seat 32, a first handle 33, a fixing plate 34, an arc groove 35 and a clamping groove 36. The first fixed seat 32 is fixed to the left side of the upper end surface of the first rotating frame 31, the first handle 33 is fixed to the middle part of the upper end surface of the first fixed seat 32, the fixing plate 34 is fixed to the right side of the upper end surface of the first rotating frame 31, the middle part of the right end surface of the fixing plate 34 is provided with an arc groove 35, the upper end surface of the inner wall of the arc groove 35 is provided with a clamping groove 36, the front end surface of the inner wall of the first rotating frame 31 is fixedly connected to the circular plate 22, and the rear end surface of the inner wall of the first rotating frame 31 is tightly fitted with the pipe body 1, and the second rotating structure 4 comprises a second rotating frame 41, a second fixed seat 32, a first handle 33 is fixed to the middle part of the upper end surface of the first fixed seat 32, and the fixing plate 34 is fixed to the right side of the upper end surface of the first rotating frame 31. The second rotating frame 41 is provided with a second fixed seat 42, a second handle 43, a connecting block 44, a rectangular groove 45, a sliding groove 46 and a transmission structure 47. The second rotating frame 41 is fixed with a second fixed seat 42 on the upper end surface, and a second handle 43 is fixed to the right side of the middle part of the upper end surface of the second fixed seat 42. The middle part of the left end surface of the second fixed seat 42 is fixedly connected to the connecting block 44. The upper end surface of the connecting block 44 is provided with a rectangular groove 45, and the middle part of the left end surface of the second fixed seat 42 is provided with a sliding groove 46. The inner wall of the rectangular groove 45 is connected to the transmission structure 47. The front and rear ends of the inner wall of the second rotating frame 41 are tightly fitted with the circular plate 22 and the pipe body 1 respectively, and the inner walls of the arc groove 35 and the clamping groove 35 are respectively fitted with the connecting block 44 and the clamping block 472, which is conducive to limiting the first rotating frame 31 and the second rotating frame 41.

[0025] See also Figure 6The utility model provides a head sealing device for hydrostatic test of pipes. The transmission structure 47 includes a spring 471, a clamping block 472, a straight rod 473 and a pressing rod 474. One end of the spring 471 is fixedly connected to the lower end surface of the inner wall of the rectangular groove 45, and the other end of the spring 471 is fixedly connected to the clamping block 472. The middle part of the right end surface of the clamping block 472 is fixedly connected to the straight rod 473. The right end surface of the straight rod 473 is fixedly connected to the pressing rod 474. The upper end of the pressing rod 474 passes through the second fixed seat 42. The upper end surface of the left side of the straight rod 473 is in contact with the limiting groove 475 and slidably cooperates with the limiting groove 475. The limiting groove 475 is arranged in the middle part of the right end surface of the connecting block 44, so that the straight rod 473 can drive the clamping block 472 to slide on the inner wall of the rectangular groove 45.

[0026] Here’s how it works:

[0027] First, the utility model is placed in the desired position. The tester holds the first grip 33 and the second grip 43 with both hands respectively, and at the same time, the thumb of the right hand holding the second grip 43 presses the pressing rod 474 downward, and the pressing rod 474 drives the straight rod 473 to move downward, and the straight rod 473 drives the clamping block 472 to move downward by the limit of the sliding groove 46 and the limit groove 475, and the clamping block 472 uses the sliding cooperation with the rectangular groove 45 to make the clamping block 472 slide downward while squeezing the spring 471 to make the spring 471 contract, at this time, the clamping block 472 is separated from the clamping groove 35, and the clamping block 472 is retracted into the inside of the rectangular groove 35, so that the limit of the clamping block 472 is released, and the first rotating frame 31 and the second rotating frame 41 can be opened outward by the rotating shaft 5;

[0028] Second, when the first rotating frame 31 is opened, the tube body 1 releases the limit of the first rotating frame 31, so that the first rotating frame 31 can drive the circular plate 22 to rotate while rotating, thereby releasing the seal of the tube body 1. If it is necessary to seal the tube body 1, it is only necessary to squeeze the rear end faces of the inner walls of the first rotating frame 31 and the second rotating frame 41 against the convex block of the tube body 1, and the front end faces of the inner walls of the second rotating frame 31 against the limit block 23, so that the tube body 1 is close to the sealing ring 21. When the first rotating frame 31 and the second rotating frame 41 are snap-fitted to the tube body 1, the rear end face of the sealing ring 21 is tightly fitted to the tube body 1. Through the cooperation of the sealing ring 21 and the circular plate 22, the sealing effect of the end of the tube body 1 can be achieved.

[0029] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0030] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0031] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A head end device for hydrostatic test of pipes, characterized in that: The invention comprises a pipe body (1), a sealing structure (2), a first rotating structure (3), a second rotating structure (4) and a rotating shaft (5); the front end face of the pipe body (1) is in contact with the sealing structure (2); the left and right sides of the front end face of the sealing structure (2) are respectively connected to the first rotating structure (3) and the second rotating structure (4); the lower sides of the first rotating structure (3) and the second rotating structure (4) are rotatably connected via the rotating shaft (5); the sealing structure (2) comprises a sealing ring (21), a circular plate (22) and a limit block (23); the front end face of the sealing ring (21) is fixedly connected to the circular plate (22); the limit blocks (23) are fixedly provided on the left and right sides of the middle of the circular plate (22); the front end face of the circular plate (22) is fixedly connected to the first rotating structure (3); and the rear end face of the sealing ring (21) is in close contact with the pipe body (1).

2. The end capping device for hydrostatic testing of pipes according to claim 1, characterized in that: The first rotating structure (3) comprises a first rotating frame (31), a first fixed seat (32), a first handle (33), a fixed plate (34), an arc groove (35) and a clamping groove (36); the first fixed seat (32) is fixed on the left side of the upper end surface of the first rotating frame (31); the first handle (33) is fixed in the middle of the upper end surface of the first fixed seat (32); the fixing plate (34) is fixed on the right side of the upper end surface of the first rotating frame (31); the middle of the right end surface of the fixing plate (34) is provided with an arc groove (35); the upper end surface of the inner wall of the arc groove (35) is provided with a clamping groove (36); the front end surface of the inner wall of the first rotating frame (31) is fixedly connected to the circular plate (22), and the rear end surface of the inner wall of the first rotating frame (31) is tightly fitted with the pipe body (1).

3. The end capping device for hydrostatic testing of pipes according to claim 1, characterized in that: The second rotating structure (4) comprises a second rotating frame (41), a second fixed seat (42), a second handle (43), a connecting block (44), a rectangular groove (45), a sliding groove (46) and a transmission structure (47). The second fixed seat (42) is fixed to the upper end surface of the second rotating frame (41), the second handle (43) is fixed to the right side of the middle part of the upper end surface of the second fixed seat (42), the middle part of the left end surface of the second fixed seat (42) is fixedly connected to the connecting block (44), the upper end surface of the connecting block (44) is provided with a rectangular groove (45), the middle part of the left end surface of the second fixed seat (42) is provided with a sliding groove (46), the inner wall of the rectangular groove (45) is connected to the transmission structure (47), and the front and rear ends of the inner wall of the second rotating frame (41) are tightly fitted with the circular plate (22) and the pipe body (1) respectively.

4. The end capping device for hydrostatic testing of pipes according to claim 3, characterized in that: The transmission structure (47) comprises a spring (471), a clamping block (472), a straight rod (473) and a pressing rod (474); one end of the spring (471) is fixedly connected to the lower end surface of the inner wall of the rectangular groove (45), and the other end of the spring (471) is fixedly connected to the clamping block (472); the middle part of the right end surface of the clamping block (472) is fixedly connected to the straight rod (473); the right end surface of the straight rod (473) is fixedly connected to the pressing rod (474); and the upper end of the pressing rod (474) passes through the second fixing seat (42).

5. The end capping device for hydrostatic testing of pipes according to claim 1, characterized in that: The front end of the outer side of the tube body (1) is convex, and the outer wall of the convexity is inclined from the front end to the rear end.

6. The end capping device for hydrostatic testing of pipes according to claim 2, characterized in that: The inner walls of the arc-shaped groove (35) and the clamping groove are respectively fitted with the connecting block (44) and the clamping block (472).

7. The end capping device for hydrostatic test of pipes according to claim 4, characterized in that: The left upper end surface of the straight rod (473) is in contact with the limiting groove (475) and is slidably matched with the limiting groove (475). The limiting groove (475) is provided in the middle of the right end surface of the connecting block (44).

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