Pipe hydrostatic testing machine

Abstract

A pipe water pressure testing machine, including pipe lifting device and pipe axial clamping sealing connection device, pipe axial clamping sealing connection device includes pushing mechanism, hollow seat and sealing insertion pipe, the outer wall of the axial opening of the hollow seat is sleeved with ring seat, the inside of the ring seat is provided with first axial through hole, second axial through hole and radial through hole, the first axial through hole is arranged with first compression spring and axial pushing part, the second axial through hole is arranged with second compression spring and axial sliding positioning part, the radial through hole is arranged with tension spring and sliding insertion part, the middle part of the sliding insertion part is provided with middle through hole, the front section of the axial pushing part is provided with stop table, the lower end of the sliding insertion part and the side wall of the axial sliding positioning part are provided with corresponding wedge head and positioning pit. The water pressure testing machine is provided with a sealing connection pipe dismounting operation convenient anti-rotation positioning structure, which has the advantages of good anti-rotation positioning effect and convenient operation.

Description

Technical Field

[0001] This invention relates to a pipe hydrostatic testing machine, belonging to the technical field of hydrostatic testing equipment. Background Technology

[0002] To improve the quality and safety of steel pipe products, online hydrostatic testing is required after pipe production. Existing pipe hydrostatic testing devices, such as the one described in Chinese Utility Model Patent "Authorization Announcement No.: CN215262872U; Authorization Announcement Date: December 21, 2021; Name: A Fully Automatic Pipe Hydrostatic Testing Machine", have axial clamping and sealing connection devices for the pipe at both ends of their U-shaped brackets. The hollow seats of the two axial clamping and sealing connection devices are respectively connected to the inlet and outlet pipes. A sealing plug-in pipe, connected to the pipe, is spirally installed on the outer wall of the axial opening of the hollow seat. A positioning structure to prevent rotation of the sealing plug-in pipe is provided between the end face of the sealing plug-in pipe and the annular baffle. The positioning structure consists of an annular pull plate, a tensioned positioning spring, and a positioning rod. When installing and removing the sealing connector, the annular pull plate needs to be pulled in the opposite direction to allow the positioning rod to leave the insertion hole on the end face of the sealing connector. Although this positioning structure can effectively prevent the sealing connector from rotating, it requires a continuous force to pull the annular pull plate in the opposite direction during installation and removal. Moreover, the annular pull plate is fitted onto the hollow seat, which not only requires a continuous force to pull in the opposite direction but also has the drawback of being inconvenient to apply. Especially when the device has been used for a long time and rusts, it is difficult to move the annular pull plate easily. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned technical deficiencies of existing pipe hydrostatic testing machines by providing a new pipe hydrostatic testing machine. This machine is equipped with an anti-rotation positioning structure that facilitates the installation and removal of the sealed connector. This anti-rotation positioning structure does not require external force when installing the sealed connector; the sliding insert only needs to be moved by tapping or squeezing when removing the sealed connector. It has the advantages of good anti-rotation positioning effect and convenient operation.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0005] A pipe hydrostatic testing machine includes a pipe lifting device and axial clamping and sealing connection devices symmetrically arranged at both ends of the pipe lifting device. The axial clamping and sealing connection devices include a pushing mechanism, a hollow seat, and a sealing connector. The hollow seat is fixed to the telescopic component of the pushing mechanism, and the sealing connector is spirally fixed to the outer wall of the axial opening of the hollow seat. An annular seat is fitted onto the outer wall of the axial opening of the hollow seat. The annular seat has a first axial through hole, a second axial through hole, and a radial through hole inside. The first axial through hole is located outside the second axial through hole, and the radial through hole starts from the outside of the annular seat and extends radially... The first axial through hole and the second axial through hole are sequentially connected. A first compression spring and an axial pusher are installed in the first axial through hole. A second compression spring and an axial sliding positioning member are installed in the second axial through hole. A tension spring and a sliding plug are installed in the radial through hole. The middle part of the sliding plug is provided with a central through hole for the axial pusher to pass through vertically. The front part of the axial pusher is provided with a stop corresponding to the central through hole. The lower end of the sliding plug is provided with a wedge-shaped head corresponding to the inclined groove on the side wall of the axial sliding positioning member. The end face of the sealing plug is provided with a positioning recess for the end of the sliding positioning member.

[0006] By adopting the above technical solution, a pipe hydrostatic testing machine is provided. This hydrostatic testing machine is equipped with an anti-rotation positioning structure that facilitates the installation and removal of the sealed connector. This anti-rotation positioning structure requires no external force during the installation of the sealed connector; the sliding insert only needs to be moved by tapping or squeezing during the removal of the sealed connector. It has the advantages of good anti-rotation positioning effect and convenient operation.

[0007] A further feature of the present invention is that a baffle corresponding to the baffle of the front section of the axial pusher is provided at the front opening of the first axial through hole.

[0008] By adopting the above technical solution, the axial movement of the axial pusher can be limited, preventing the axial pusher from falling out of the first axial through hole.

[0009] A further feature of the present invention is that the rear openings of the first axial through hole and the second axial through hole are simultaneously sealed by a side plate.

[0010] A further feature of the present invention is that the middle or rear section of the axial pushing member and the axial sliding positioning member is provided with a stop for the corresponding compression spring.

[0011] A further feature of the present invention is that a cover plate is provided at the outer opening of the radial through hole, through which the upper end of the sliding plug is accommodating; the outer end of the tension spring is fixed to the inner side of the cover plate; and the inner end of the tension spring is fixed to the upper side of the through hole in the middle of the sliding plug.

[0012] By adopting the above technical solution, the specific placement method of the sliding spring in the first axial through hole, the second axial through hole and the radial through hole is defined. This design not only effectively ensures the smooth sliding of the telescopic parts in each through hole, but also minimizes the axial arrangement space requirements of each component, and achieves a compact fit between each component.

[0013] A further provision of the present invention is that a sealing ring is provided between the ring seat and the end face of the sealing plug.

[0014] By adopting the above technical solution, the sealing performance of the sealing plug-in connection is effectively improved.

[0015] A further embodiment of the present invention is that the pipe lifting device includes an arc-shaped groove plate and a vertical pusher disposed below the arc-shaped groove plate.

[0016] A further feature of the present invention is that the pipe axial clamping and sealing connection devices at both ends of the pipe lifting device are respectively mounted on the supports at both ends of the U-shaped bracket.

[0017] By adopting the above technical solution, the arrangement of the pipe lifting device and the pipe axial clamping and sealing connection device is limited.

[0018] The main beneficial effects of this invention are:

[0019] 1. The hydraulic pressure testing machine of the present invention is equipped with an anti-rotation positioning structure that facilitates the disassembly and assembly of the sealing connection pipe. This anti-rotation positioning structure does not require the application of external force when installing the sealing connector pipe. It only requires the sliding plug to be moved by tapping or squeezing when disassembling the sealing connector pipe. It has the advantages of good anti-rotation positioning effect and convenient operation.

[0020] 2. The present invention specifies the specific arrangement of the sliding springs in the first axial through hole, the second axial through hole and the radial through hole of the hydraulic pressure testing machine. This design not only effectively ensures the smooth sliding of the telescopic components in each through hole, but also minimizes the axial arrangement space requirements of each component, and achieves a compact fit between the components. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 yes Figure 1Enlarged view of point A (before positioning);

[0024] Figure 3 yes Figure 1 Enlarged view of point B (after positioning);

[0025] Figure 4 This is a schematic diagram of the vertical plug-in structure in this invention.

[0026] In the diagram, 1. Pushing mechanism; 2. Hollow seat; 3. Inlet pipe; 4. Sealing connector; 5. Outlet pipe; 6. U-shaped bracket; 7. Arc-shaped groove plate; 8. Vertical pushing component; 9. Ring seat; 10. Cover plate; 11. Tension spring; 12. Sliding insert; 13. Axial pushing component; 14. Baffle; 15. Baffle; 16. Positioning recess; 17. Axial sliding positioning component; 18. Second compression spring; 19. First compression spring; 20. Side plate; 21. Wedge head; 22. Inclined slot; 23. Central through hole. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0028] Example 1:

[0029] like Figures 1 to 4 As shown, a pipe hydrostatic testing machine includes a pipe lifting device and pipe axial clamping and sealing connection devices symmetrically arranged at both ends of the pipe lifting device. The pipe lifting device includes an arc-shaped groove plate 7 and a vertical pusher 8 placed below the arc-shaped groove plate 7. The pipe axial clamping and sealing connection devices at both ends of the pipe lifting device are respectively placed on the supports at both ends of the U-shaped support 6.

[0030] The pipe axial clamping and sealing connection device includes a pushing mechanism 1, a hollow seat 2, and a sealing plug 4. The hollow seat 2 is fixed to the telescopic component of the pushing mechanism 1, and the sealing plug 4 is spirally fixed to the outer side wall of the axial opening of the hollow seat 2. A sealing ring is provided between the ring seat 9 and the end face of the sealing plug 4. The outer side wall of the axial opening of the hollow seat 2 is fitted with a ring seat 9. The ring seat 9 has a first axial through hole, a second axial through hole, and a radial through hole inside. The first axial through hole is located outside the second axial through hole. The radial through hole starts from the outside of the ring seat 9 and radially passes through the first axial through hole and the second axial through hole in sequence. A first compression spring 19 and an axial pushing component 13 are installed in the first axial through hole, and a second compression spring 18 and an axial sliding positioning component 17 are installed in the second axial through hole. A sealing ring is provided at the front opening of the first axial through hole. A baffle 15 corresponding to the baffle 14 is provided. A tension spring 11 and a sliding plug 12 are installed in the radial through hole. The middle part of the sliding plug 12 is provided with a central through hole 23 for the axial pusher 13 to pass through vertically. The front part of the axial pusher 13 is provided with a baffle 14 corresponding to the central through hole 23. The lower end of the sliding plug 12 is provided with a wedge head 21 corresponding to the inclined groove 22 on the side wall of the axial sliding positioning member 17. The end face of the sealing plug 4 is provided with a positioning recess 16 for the end of the sliding positioning member 17.

[0031] The middle or rear section of the axial pushing member 13 and the axial sliding positioning member 17 are provided with a stop for the corresponding compression spring. The rear openings of the first axial through hole and the second axial through hole are simultaneously blocked by the side plate 20. A cover plate 10 is provided at the outer opening of the radial through hole, through which the upper end of the sliding plug 12 passes. The outer end of the tension spring 11 is fixed to the inner side of the cover plate 11, and the inner end of the tension spring 11 is fixed to the upper side of the middle through hole 23 of the sliding plug 12.

[0032] During use, as the end of the sealing plug 4 spirals toward the ring seat 9, the end of the sealing plug 4 axially presses against the axial pusher 13. When the front end of the axial pusher 13 is completely retracted into the first axial through hole, the stop 14 at the front of the axial pusher 13 moves to the inside of the through hole 23 in the middle of the sliding plug 12. The sliding plug 12 moves outward under the action of the tension spring 11, causing the wedge head 21 at the lower end of the sliding plug 12 to disengage from the inclined slot 22 on the side wall of the axial sliding positioning member 17. Finally, the axial sliding positioning member 17 is inserted into the positioning recess 16 on the end face of the sealing plug 4 under the action of the second compression spring 18, thereby achieving the positioning of the sealing plug 4.

[0033] When the sealing connector 4 needs to be removed, forcefully squeeze or tap the outer end of the sliding insert 12 to make the sliding insert 12 embedded in the radial through hole. The wedge-shaped head 21 at the lower end of the sliding insert 12 pushes the inclined groove 22 backward by squeezing it, which can push the axial sliding positioning part 17 to move backward and exit from the positioning recess 16. At this time, the middle through hole 23 of the sliding insert 12 moves down, allowing the stop 14 of the axial pusher 13 to pass through. At this time, keep the sliding insert 12 embedded in the radial through hole, and the sealing connector 4 can be removed and replaced by rotating it in the opposite direction.

Claims

1. A pipe hydrostatic testing machine, comprising a pipe lifting device and pipe axial clamping and sealing connection devices symmetrically arranged at both ends of the pipe lifting device, wherein the pipe axial clamping and sealing connection devices include a pushing mechanism (1), a hollow seat (2), and a sealing insertion pipe (4), wherein the hollow seat (2) is fixed on the telescopic component of the pushing mechanism (1), and the sealing insertion pipe (4) is spirally fixed to the outer side wall of the axial opening of the hollow seat (2); characterized in that: The outer side wall of the axial opening of the hollow seat (2) is sleeved with a ring seat (9), the inside of the ring seat (9) is provided with a first axial through hole, a second axial through hole and a radial through hole, the first axial through hole is located outside the second axial through hole, the radial through hole sequentially penetrates the first axial through hole and the second axial through hole from the outside of the ring seat (9), the first axial through hole is arranged with a first compression spring (19) and an axial pusher (13), the second axial through hole is arranged with a second compression spring (18) and an axial sliding positioning piece (17), the radial through hole is arranged with a tension spring (11) and a sliding insert (12), the middle part of the sliding insert (12) is provided with a middle through hole (23) vertically penetrating the axial pusher (13), the front section of the axial pusher (13) is provided with a stop table (14) corresponding to the middle through hole (23), the lower end of the sliding insert (12) is provided with a wedge-shaped head (21) corresponding to the inclined slot (22) of the side wall of the axial sliding positioning piece (17), and the end surface of the sealing plug-in pipe (4) is provided with a positioning pit (16) for the end part of the sliding positioning piece (17).

2. The tube hydrostatic testing machine according to claim 1, characterized in that: The front opening of the first axial through hole is provided with a baffle (15) corresponding to the stop table (14).

3. The tube hydrostatic testing machine of claim 2, wherein: The rear orifices of the first axial through hole and the second axial through hole are simultaneously blocked by a side plate (20).

4. The tube hydrostatic testing machine of claim 3, wherein: The middle section or rear section of the axial pusher (13) and the axial sliding positioning piece (17) is provided with a stop table for the corresponding compression spring.

5. A pipe hydrostatic testing machine according to claim 4, wherein: The outer orifice of the radial through hole is provided with a cover plate (10) penetrating the upper end of the sliding insert (12), the outer end of the tension spring (11) is fixed to the inside of the cover plate (11), and the inner end of the tension spring (11) is fixed to the upper side of the middle through hole (23) of the sliding insert (12).

6. A pipe hydrostatic testing machine according to claim 5, wherein: A sealing ring is arranged between the ring seat (9) and the end surface of the sealing plug-in pipe (4).

7. The tube hydrostatic testing machine of claim 1, wherein: The pipe lifting device comprises an arc-shaped groove plate (7) and a vertical pusher (8) arranged below the arc-shaped groove plate (7).

8. The tube hydrostatic testing machine of claim 7, wherein: The pipe axial clamping and blocking connecting devices at both ends of the pipe lifting device are arranged on the supports at both ends of the U-shaped support (6).

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