CN213929956U

CN213929956U - Pipe plug for testing water pressure of welded pipe

Info

Publication number: CN213929956U
Application number: CN202022685795.8U
Authority: CN
Inventors: 雷静桃
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-08-10
Anticipated expiration: 2030-11-19

Abstract

The utility model provides a pipe plug for testing water pressure of a welded pipe, which comprises a chuck and a plugging plate, wherein the chuck is sleeved outside the end part of the welded pipe during working, and the inner diameter of the chuck is larger than the outer diameter of the welded pipe; a plurality of fixing nuts are uniformly welded on the disc surface of the chuck facing the welding pipe along the outer circumference of the welding pipe, and a radial fixing bolt is matched in each fixing nut; a circular rubber plate is fixedly arranged at the center of the surface of the blocking plate facing the welded pipe, the outer diameter of the circular rubber plate is larger than that of the welded pipe, and a plurality of first through holes are uniformly formed in the surface of the blocking plate facing the welded pipe along the outer circumference of the circular rubber plate; the chuck is provided with second through holes which correspond to the first through holes one by one; the axial fixing bolt sequentially penetrates through the first through hole and the corresponding second through hole from outside to inside, and a locking nut is arranged at the tail end of the axial fixing bolt. The utility model discloses a welded pipe is stifled for water pressure test simple structure, the processing ease is applicable to the welded pipe of various bores size to, more durable, difficult seepage.

Description

Pipe plug for testing water pressure of welded pipe

Technical Field

The utility model belongs to the technical field of the stainless steel pipeline and specifically relates to a welded tube is stifled for pressure test water.

Background

After the stainless steel pipe with the larger caliber is welded and assembled, water needs to be filled into the stainless steel pipe to test the water pressure born by the welding position so as to determine the welding firmness. Before the irrigation test, the two ends of the stainless steel pipe need to be sealed by pipe plugs. The existing pipe plug is a plug which is provided with external threads, and the plug is screwed into the port of the stainless steel pipe to realize port sealing through matching with the internal threads on the inner side of the port of the stainless steel pipe. However, such plugs have poor sealing performance, and particularly after being used for a few times, the threads are easily worn or rusted, thereby causing leakage; in addition, the stainless steel pipes with different calibers need plugs matched with the sizes, so that plugs with various types and sizes need to be arranged on a construction site, the cost is increased, and meanwhile, the trouble of finding a plug with a proper size is also brought.

Disclosure of Invention

The utility model aims at providing a welded tube is stifled for pressure test water, simple structure, the processing ease is applicable to the welded tube of various bores size to, more durable, difficult seepage.

A pipe plug for testing water pressure of a welded pipe comprises a chuck and a plugging plate, wherein the chuck is sleeved outside the end part of the welded pipe during working, the inner diameter of the chuck is larger than the outer diameter of the welded pipe, and the port of the welded pipe extends out of the chuck; a plurality of fixing nuts are uniformly welded on the disc surface of the chuck facing the welding pipe along the outer circumference of the welding pipe, the central axis of each fixing nut is vertical to the welding pipe, a radial fixing bolt is in threaded fit with each fixing nut, and when the chuck works, the front end of each radial fixing bolt is pressed against the outer circumferential wall of the welding pipe, so that the chuck is fixed; a circular rubber plate is fixedly arranged at the center of the surface of the blocking plate facing the welded pipe, the outer diameter of the circular rubber plate is larger than that of the welded pipe, and a plurality of first through holes are uniformly formed in the surface of the blocking plate facing the welded pipe along the outer circumference of the circular rubber plate; second through holes which correspond to the first through holes one by one are formed in the chuck, and the second through holes and the fixing nuts are distributed in a staggered mode along the circumference; the pipe plug further comprises axial fixing bolts with the number equal to that of the first through holes, and each axial fixing bolt sequentially penetrates through the first through holes and the corresponding second through holes from outside to inside and is provided with a locking nut at the tail end of the axial fixing bolt.

The utility model discloses a pipe plug simple structure, the processing ease, the internal diameter of chuck is greater than the external diameter of welding pipe for the chuck can overlap and establish the welding pipe at multiple bore, and simultaneously, the external diameter of circular offset plate is greater than the external diameter of welding pipe, is applicable to and carries out the shutoff to multiple bore welding pipe, and, radial fixing bolt, fixation nut, axial fixity bolt and lock nut all contactless water, and is more durable, also difficult the seepage that takes place.

Preferably, the first through hole and the second through hole are threaded holes capable of being in threaded fit with the axial fixing bolt, and connection is firmer.

Drawings

Fig. 1 is a three-dimensional structure diagram of a pipe plug for testing water pressure of a welded pipe according to the present invention;

FIG. 2 is a side view of the pipe plug for testing water pressure of the welded pipe of the present invention;

FIG. 3 is a front view of the pipe plug for testing water pressure of the welded pipe of the present invention;

FIG. 4 is a front view of the pipe plug for testing water pressure of the welded pipe according to the present invention, when the plug plate is removed;

fig. 5 is a three-dimensional structure view of the closure plate of the present invention.

Detailed Description

The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

with reference to fig. 1 to 5, a pipe plug for testing water pressure of a welded pipe comprises a chuck 1 and a blocking plate 2, wherein when the pipe plug works, the chuck 1 is sleeved outside the end part of the welded pipe 4, the inner diameter R' of the chuck 1 is larger than the outer diameter R of the welded pipe 4, and a port 41 of the welded pipe 4 extends out of the chuck 1; four fixing nuts 5 are uniformly welded on the disc surface of the chuck 1 facing the welding pipe 4 along the outer circumference of the welding pipe 4, the central axis of each fixing nut 5 is vertical to the welding pipe 4, a radial fixing bolt 6 is matched in each fixing nut 5 in a threaded manner, and when the chuck works, the front end of each radial fixing bolt 6 is pressed against the outer circumferential wall of the welding pipe 4, so that the chuck 1 is fixed; a circular rubber plate 7 is fixedly arranged at the center of the surface of the blocking plate 2 facing the welding pipe 4, the outer diameter of the circular rubber plate 7 is larger than the outer diameter R of the welding pipe 4, and four first through holes 21 are uniformly formed in the surface of the blocking plate 2 facing the welding pipe 4 along the outer circumference of the circular rubber plate 7; the chuck 1 is provided with second through holes 11 which correspond to the first through holes 21 one by one, and the second through holes 11 and the fixing nuts 5 are distributed along the circumference in a staggered manner; the pipe plug further comprises axial fixing bolts 8 with the same number as the first through holes 21, and each axial fixing bolt 8 sequentially penetrates through the first through hole 21 and the corresponding second through hole 11 from outside to inside and is provided with a locking nut 9 at the tail end of the axial fixing bolt.

During assembly, the chuck 1 is firstly sleeved on the end part of the welding pipe 4, and the port of the welding pipe 4 extends out of the chuck 1; all the radial fixing bolts 6 are tightened, so that the front ends of the radial fixing bolts 6 are tightly pressed on the outer peripheral wall of the welding pipe 4, and the chuck 1 is fixed outside the end part of the welding pipe 4; then, the axial fixing bolt 8 sequentially penetrates through the first through hole 21 and the corresponding second through hole 11 from outside to inside, and the locking nut 9 is screwed to realize the fixed connection between the blocking plate 2 and the chuck 1, and meanwhile, the circular rubber plate 7 on the blocking plate 2 seals the port of the welding pipe 4.

The utility model discloses a pipe plug simple structure, the processing ease, chuck 1's internal diameter is greater than the external diameter of welding pipe 4 for chuck 1 can overlap and establish the welding pipe 4 at multiple bore, and simultaneously, circular offset plate 7's external diameter is greater than the external diameter R of welding pipe 4, is applicable to and carries out the shutoff to multiple bore welding pipe 4, and, radial fixing bolt 6, fixation nut 5, axial fixing bolt 8 and lock nut 9 all contactless water, and is more durable, also difficult the seepage that takes place.

Preferably, the first through hole 21 and the second through hole 11 are both threaded holes capable of being in threaded fit with the axial fixing bolt 8, so that the connection is firmer.

Of course, the number of the fixing nuts 5 and the radial fixing bolts 6 of the present invention is not limited to 4, and it may be 3 or more than 4. Similarly, the number of the axial fixing bolts 8 and the locking nuts 9 of the present invention is not limited to 4, and it may be 3 or more than 4.

Claims

1. The utility model provides a welded tube test water is pipe plug for pressure which characterized in that: the welding pipe comprises a chuck and a blocking plate, wherein the chuck is sleeved outside the end part of the welding pipe during working, the inner diameter of the chuck is larger than the outer diameter of the welding pipe, and the port of the welding pipe extends out of the chuck; a plurality of fixing nuts are uniformly welded on the disc surface of the chuck facing the welding pipe along the outer circumference of the welding pipe, the central axis of each fixing nut is vertical to the welding pipe, a radial fixing bolt is in threaded fit with each fixing nut, and when the chuck works, the front end of each radial fixing bolt is pressed against the outer circumferential wall of the welding pipe, so that the chuck is fixed; a circular rubber plate is fixedly arranged at the center of the surface of the blocking plate facing the welded pipe, the outer diameter of the circular rubber plate is larger than that of the welded pipe, and a plurality of first through holes are uniformly formed in the surface of the blocking plate facing the welded pipe along the outer circumference of the circular rubber plate; second through holes which correspond to the first through holes one by one are formed in the chuck, and the second through holes and the fixing nuts are distributed in a staggered mode along the circumference; the pipe plug further comprises axial fixing bolts with the number equal to that of the first through holes, and each axial fixing bolt sequentially penetrates through the first through holes and the corresponding second through holes from outside to inside and is provided with a locking nut at the tail end of the axial fixing bolt.

2. The pipe plug for testing water pressure of the welded pipe according to claim 1, characterized in that: the first through hole and the second through hole are threaded holes capable of being in threaded fit with the axial fixing bolt.