CN216622014U

CN216622014U - Boiler pipe joint water pressure testing arrangement

Info

Publication number: CN216622014U
Application number: CN202123245627.8U
Authority: CN
Inventors: 姚远; 潘伟亮; 张亚彬; 李文利; 代哲振
Original assignee: Zhejiang Institute of Special Equipment Science
Current assignee: Zhejiang Institute of Special Equipment Science
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-27
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a water pressure testing device for a boiler pipeline joint, and relates to the technical field of pipeline joints. The device includes the pipeline main part, and the thread groove has been seted up to the inside of pipeline main part, and threaded rod is pegged graft in the inside activity of pipeline main part, and the one end fixed mounting of threaded rod has the toper piece, and the toper piece meshing is in the inside of thread groove. This boiler pipe joint water pressure testing arrangement is when using, through the one end installation internal thread ring at pipeline main part for peg graft and can and the internal thread ring between the screw thread piece of the inside threaded rod one end surface threaded connection who trades the main part, and then make the sealing mechanism of this threaded rod surface assembly can stabilize the one end with pipeline main part and seal, has changed the poor and easy roll-off of device leakproofness in the traditional interior expanding water pressure frock, the condition of unable chucking pipe fitting inner wall.

Description

Boiler pipe joint water pressure testing arrangement

Technical Field

The utility model relates to the technical field of pipeline joints, in particular to a water pressure testing device for a boiler pipeline joint.

Background

The boiler compression element must carry out water pressure test after nondestructive test and thermal treatment are qualified, water pressure test is an important process in the product manufacturing process, and quality control is added as the stop point, at present, the mode that adopts traditional welding bulkhead mostly carries out water pressure test, because the pipe connection's of boiler header quantity is more, the work load of welding bulkhead is fairly big, after water pressure test, still need adopt the mode of gas cutting to cut bulkhead, then carry out the pipe joint groove chamfer.

In a high-pressure high-parameter boiler, in order to increase the efficiency of a heating surface, an internal threaded pipe is more adopted in a membrane type water-cooled wall row, when the internal threaded pipe is subjected to a hydraulic test, as the inner wall of the pipe is provided with a threaded groove, and the hydraulic test pressure is high, the traditional internal expansion type hydraulic tool is poor in sealing performance and easy to slide out, the inner wall of a pipe fitting cannot be clamped, and even a safety accident can occur.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model discloses a water pressure testing device for a boiler pipeline joint, which aims to solve the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the utility model is realized by the following technical scheme: a boiler pipe joint water pressure test device comprises:

the pipeline comprises a pipeline main body, a threaded groove is formed in the pipeline main body, an internal thread ring is fixedly installed at one end of the pipeline main body, a threaded rod is movably inserted into the pipeline main body, a conical block is fixedly installed at one end of the threaded rod, and the conical block is meshed in the threaded groove;

sealing mechanism, sealing mechanism installs the surface at the threaded rod, sealing mechanism includes the lantern ring, fixed block and L shaped plate, the threaded rod is close to the one end surface of toper piece and is equipped with O shape sealing washer, lantern ring sliding connection is at the surface of threaded rod, the fixed surface of the lantern ring installs the fixed block, L shaped plate sliding connection is in the inside of pipeline main part, one side of fixed block offsets with the one end side activity of L shaped plate, the other end of L shaped plate offsets with the surface activity of O shape sealing washer.

Preferably, a thread block is sleeved on the outer surface of one end, far away from the conical block, of the threaded rod in a threaded manner, and the thread block is located on one side of the lantern ring.

Preferably, the outer surface of the screw block is fitted with a screw thread, and the outer surface of the screw block is screwed inside the internally threaded ring.

Preferably, the pipeline main body is provided with a groove inside, and the two groups of L-shaped plates are connected inside the groove in a sliding manner.

Preferably, the inner bottom of the groove is provided with a sliding groove, the lower surface of one end of each of the two groups of L-shaped plates is fixedly provided with a limiting block, and the limiting blocks are connected inside the sliding grooves in a sliding mode.

Preferably, the sealing mechanism further comprises a telescopic rod and a spring, the telescopic rod is fixedly installed between one side of the L-shaped plate and the inner side wall of the groove, and the spring is movably sleeved on the outer surface of the telescopic rod.

The utility model discloses a water pressure testing device for a boiler pipeline joint, which has the following beneficial effects:

1. this boiler pipe joint water pressure testing arrangement is when using, through the one end installation internal thread ring at pipeline main part for peg graft and can and the internal thread ring between the screw thread piece of the inside threaded rod one end surface threaded connection who trades the main part, and then make the sealing mechanism of this threaded rod surface assembly can stabilize the one end with pipeline main part and seal, has changed the poor and easy roll-off of device leakproofness in the traditional interior expanding water pressure frock, the condition of unable chucking pipe fitting inner wall.

2. This boiler pipe joint water pressure testing arrangement is when using, through the screw thread piece of rotating threaded rod surface mounting, make screw thread piece promote and the lantern ring removes, make lantern ring surface mounting's fixed block offset with the one end of pipeline main part internally mounted's L shaped plate, and then make the other end and the contact of O shape sealing washer of L shaped plate, make O shape sealing washer pressurized inflation, seal the inside of pipeline, make installation convenient operation, it seals the material waste and the installation inconvenience that cause to have reduced traditional welding stifle.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view showing the internal structure of the pipe joint according to the present invention;

FIG. 3 is a schematic view of the sealing mechanism of the present invention;

FIG. 4 is a schematic view of the spring mechanism of the present invention.

In the figure: 1. a pipe body; 101. a thread groove; 2. an internally threaded ring; 3. a threaded rod; 4. a conical block; 5. an O-shaped sealing ring; 6. a thread block; 7. a sealing mechanism; 701. a collar; 702. a fixed block; 703. an L-shaped plate; 704. a telescopic rod; 705. a spring; 8. a groove; 9. a chute; 10. and a limiting block.

Detailed Description

The embodiment of the utility model discloses a water pressure testing device for a boiler pipeline joint, which comprises a pipeline main body 1, wherein a thread groove 101 is formed in the pipeline main body 1, an internal thread ring 2 is fixedly installed at one end of the pipeline main body 1, a threaded rod 3 is movably inserted in the pipeline main body 1, a conical block 4 is fixedly installed at one end of the threaded rod 3, the conical block 4 is meshed in the thread groove 101, and the conical block 4 and the thread groove 101 in the pipeline main body 1 are meshed and clamped, so that the connecting strength between a sealing device and the pipeline main body 1 is increased in the pressure testing process.

According to the attached drawings 2-3, a thread block 6 is sleeved on the outer surface of one end, far away from a conical block 4, of a threaded rod 3, the thread block 6 is located on one side of a lantern ring 701, threads are assembled on the outer surface of the thread block 6, the outer surface of the thread block 6 is in threaded connection with the inner portion of an inner thread ring 2, threads are installed on the inner surface and the outer surface of the thread block 6 by rotating the thread block 6 on the outer surface of the threaded rod 3, the inner surface of the thread block 6 is in threaded connection with the threaded rod 3, and threads installed on the outer surface of the thread block 6 are in threaded connection with the inner thread ring 2.

According to the attached drawings 3-4, the device comprises a sealing mechanism 7, the sealing mechanism 7 is installed on the outer surface of the threaded rod 3, the sealing mechanism 7 comprises a sleeve ring 701, a fixing block 702 and an L-shaped plate 703, the outer surface of one end, close to the conical block 4, of the threaded rod 3 is provided with an O-shaped sealing ring 5, the sleeve ring 701 is connected to the outer surface of the threaded rod 3 in a sliding mode, the fixing block 702 is fixedly installed on the outer surface of the sleeve ring 701, the L-shaped plate 703 is connected to the inside of the pipeline body 1 in a sliding mode, one side of the fixing block 702 is movably abutted to the side face of one end of the L-shaped plate 703, the other end of the L-shaped plate 703 is movably abutted to the outer surface of the O-shaped sealing ring 5, and the O-shaped sealing ring 5 is enabled to be pressed and expanded inside the pipeline body 1 through the pushing and squeezing effect of the L-shaped plate 703, and one end of the pipeline body 1 is plugged.

According to fig. 4, groove 8 has been seted up to the inside of pipeline main part 1 in the device, two sets of L shaped plate 703 sliding connection have been in the inside of groove 8, spout 9 has been seted up to the inner bottom of groove 8, fixed surface installs stopper 10 under the one end of two sets of L shaped plate 703, stopper 10 sliding connection is in the inside of spout 9, sealing mechanism 7 still includes telescopic link 704 and spring 705, fixed mounting has telescopic link 704 between one side of L shaped plate 703 and the inside wall of groove 8, spring 705 has been cup jointed in the surface activity of telescopic link 704, through the spring action of spring 705, make when outwards moving the lantern ring 701, the one end of L shaped plate 703 under the spring 705 effect with the separation between the O shape sealing washer 5, make sealing mechanism 7 stop using.

The working principle is as follows:

when the water pressure testing device for the boiler pipeline joint is used, one end, provided with the conical block 4, of the threaded rod 3 is firstly inserted into the pipeline body 1, and the O-shaped sealing ring 5 is located inside the end of the pipeline body 1 and is not in contact with one end of the L-shaped plate 703.

Further, the thread block 6 connected with the outer surface of one end of the threaded rod 3 in a threaded manner is rotated, so that the thread block 6 moves towards the direction close to the lantern ring 701, one side of the L-shaped plate 703 arranged inside the groove 8 of the fixing block 702 arranged on the outer surface of one end of the lantern ring 701 is abutted, and one end of the L-shaped plate 703 is gradually pushed to abut against the outer surface of the O-shaped sealing ring 5.

Further, when the outer surface of one end of the screw block 6 is screwed into the inner portion of the internally threaded ring 2 mounted on the outer surface of one end of the pipe body 1, the L-shaped plate 703 presses the O-ring 5 by the pushing action of the collar 701.

Further, when the O-ring 5 is pressed by external force, it is pressed and expanded in the pipe body 1, and the sealing operation is performed on the inside of the pipe body 1.

Finally, the operator can carry out the water pressure test on the pipeline main body 1.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a boiler pipe joint water pressure testing arrangement which characterized in that includes:

the pipeline comprises a pipeline main body (1), wherein a thread groove (101) is formed in the pipeline main body (1), an internal thread ring (2) is fixedly installed at one end of the pipeline main body (1), a threaded rod (3) is movably inserted in the pipeline main body (1), a conical block (4) is fixedly installed at one end of the threaded rod (3), and the conical block (4) is meshed in the thread groove (101);

sealing mechanism (7), the surface at threaded rod (3) is installed in sealing mechanism (7), sealing mechanism (7) are including the lantern ring (701), fixed block (702) and L shaped plate (703), one end surface that threaded rod (3) are close to toper piece (4) is equipped with O shape sealing washer (5), lantern ring (701) sliding connection is at the surface of threaded rod (3), the fixed surface of the lantern ring (701) installs fixed block (702), L shaped plate (703) sliding connection is in the inside of pipeline main part (1), one side of fixed block (702) offsets with the one end side activity of L shaped plate (703), the other end of L shaped plate (703) offsets with the surface activity of O shape sealing washer (5).

2. The boiler pipe joint water pressure test device according to claim 1, wherein: the outer surface of one end of the threaded rod (3) far away from the conical block (4) is in threaded sleeve connection with a threaded block (6), and the threaded block (6) is located on one side of the sleeve ring (701).

3. The boiler pipe joint water pressure test device according to claim 2, wherein: the outer surface of the thread block (6) is provided with threads, and the outer surface of the thread block (6) is connected to the inside of the internal thread ring (2) in a threaded mode.

4. The boiler pipe joint water pressure test device according to claim 3, wherein: a groove (8) is formed in the pipeline main body (1), and the two groups of L-shaped plates (703) are connected to the inside of the groove (8) in a sliding mode.

5. The boiler pipe joint water pressure test device according to claim 4, wherein: the inner bottom of the groove (8) is provided with a sliding groove (9), the lower surface of one end of each of the two groups of L-shaped plates (703) is fixedly provided with a limiting block (10), and the limiting blocks (10) are connected to the inside of the sliding grooves (9) in a sliding mode.

6. The boiler pipe joint water pressure test device according to claim 1, wherein: the sealing mechanism (7) further comprises a telescopic rod (704) and a spring (705), the telescopic rod (704) is fixedly installed between one side of the L-shaped plate (703) and the inner side wall of the groove (8), and the spring (705) is movably sleeved on the outer surface of the telescopic rod (704).