CN210770979U - Half joint pressure relief plug - Google Patents

Abstract

The utility model discloses a ha fujie pressure release end cap, including stifled apron, have the concave-convex part of being convenient for adopt the instrument to implement to twist soon on the outside face of stifled apron, the inboard face of stifled apron on have the screwed pipe of external screw thread, have the through-hole that link up the pipe wall on the pipe wall of screwed pipe. The utility model discloses a be provided with a series of structures for the casing cap is at the installation, overcomes current pressure release casing cap's defect, and no flexural deformation is to cracked risk, and the screwed pipe section that just is located the through-hole both sides on the pipe length direction has remained continuous complete multichannel screw thread, with the help of the actual installation of continuity screw thread being convenient for, when realizing the pressure release operation, and increase joint strength, when follow-up the use, avoid taking place accident such as leakage and take place.

Description

Half joint pressure relief plug

Technical Field

The utility model relates to a ha fujie pressure release end cap specifically says that the end cap of installation on the connecting hole on the quick-connect ha fujie that pipeline restoration was used.

Background

The existing pipelines for gas transmission, water supply and the like are usually buried underground, water and gas leakage phenomena caused by pipeline breakage due to various reasons are frequent, and the quick plugging and repairing of the broken pipelines by adopting the half joint are quite common. Since there is still a gas or liquid medium in the broken pipe and there may be a suitable pressure, a pressure relief hole is usually provided in one half of the half joint, so that the half joint is conveniently connected and then the pressure relief hole is plugged by a plug.

The utility model discloses a patent document named "a pipeline end cap" (CN207421625U, announcement date 2018, 05, 29) just provides a concrete implementation scheme, and the end cap that discloses includes screwed pipe and sets up the shutoff end in screwed pipe one end, offers the opening that runs through the pipeline wall on the pipeline wall of screwed pipe, and the opening is extended to the direction that is close to the shutoff end by the other end of screwed pipe. The defects existing in the scheme are mainly caused by the arrangement mode of arranging the notch on the pipeline wall and extending the notch, in particular to the fact that the stress concentration part is formed on the pipeline wall corresponding to the tooth bottom of the thread by arranging the thread, and the circumferential pipe wall of the threaded pipe is divided by arranging the notch, so that the originally continuous and complete threaded pipe is divided into a plurality of arc-shaped plates which are arranged at intervals in the circumferential direction, the arc-shaped plates are equivalent to cantilever plate (beam) structures and are restrained by screw holes matched with the cantilever plate structures, and the pipe wall at the bottom of the notch is extremely easy to bend and break, for example, the embodiment shown in figures 1 and 3 shows that the notch is actually arranged at the groove, only one tooth thread is actually arranged, so-called threaded pipes only have names and do not have the actual names, namely the threaded pipes do not exist, the connection reliability of the thread cannot be ensured, and only arc-shaped corrugated plates are left, the risk of its breakage has reached a limit; on the other hand, the assembly is difficult, namely, the continuous threads of the pipe orifice of the threaded pipe are damaged by the arrangement of the notch, the centering position is difficult to determine when the plug and the half joint are initially assembled, the butt joint is continuously tried, and the assembly efficiency is obviously low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ha fujie pressure release end cap is favorable to the pipeline to contain the restoration shutoff of pressing the state.

In order to realize above-mentioned purpose, a ha fujie pressure release end cap, including stifled apron, have the concave-convex part of twisting, its characterized in that to be convenient for adopt the instrument to implement on the outside face of stifled apron: the inner side plate surface of the blocking cover plate is provided with a screwed pipe with external threads, and the pipe wall of the screwed pipe is provided with a through hole penetrating through the pipe wall.

Among the above-mentioned scheme, set up the pressure release through-hole on the pipeline section of the screwed pipe of end cap, the end cap is installed on the pressure release installation screw hole on the half festival for the first time, pressure medium can set up pressure release through-hole guide discharge on the pipeline section of the screwed pipe of end cap, so the screw pipe end on the end cap is centered very conveniently with the drill way initial installation of the screw hole on the half festival, then progressively tighten the end cap can, especially important is because the through-hole is seted up on the pipeline section of screwed pipe, the tubular of screwed pipe is still complete, the both ends of screwed pipe all have the screw thread of the pipeline section of suitable pipe length to be complete in succession, so provide reliable threaded connection cooperation, the screwed pipe does not have the risk of bending deformation to fracture naturally.

Drawings

Fig. 1 and 2 are schematic perspective views of the present invention, respectively, wherein 4 is a sealing ring;

fig. 3 is an assembly diagram in a use state.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1 to 3.

A Hough section pressure relief plug comprises a plug cover plate 10, wherein a concave-convex part 20 facilitating screwing by using a tool is arranged on the outer side plate surface of the plug cover plate 10, one end of a threaded pipe 30 is connected with the inner side plate surface of the plug cover plate 10 in a plugging mode, the other end of the threaded pipe 30 is in a free state, and a through hole 31 penetrating through the pipe wall is formed in the pipe wall.

As can be seen from fig. 1, the outer diameter of the blanking cover plate 10 is larger than the outer diameter of the connecting threaded pipe 30, and the concave-convex portion 20 facilitates the tool to bear force, so as to drive the whole blanking cover to be screwed, installed or disassembled, and at the same time, because the through hole 31 is formed in the pipe section of the threaded pipe 30, when the blanking cover is installed on the half section and pressure medium exists in the half section, the medium can be discharged through the through hole 31, so that the pressure relief effect is achieved, and the pressure medium is prevented from influencing the installation of the blanking cover.

The utility model discloses a pipeline end cap is exactly that the tubular structure who constitutes is stifled apron 10 promptly to set up the blanking cover in the one end of screwed pipe 30 in essence to for easy to assemble, set up the through-hole 31 of pressure release on the screwed pipe section. By adopting the arrangement scheme of the through hole 31, the integrity of the threads at the end of the threaded pipe 30 is ensured while medium pressure relief in the pipeline is ensured during initial assembly, the initial assembly centering is facilitated, continuous and complete threaded connection in a plugging state is ensured, and the reliability and the continuity of the plugging performance are ensured.

Further, in fig. 2, the through holes 31 are arranged at intervals in the circumferential direction of the wall of the threaded pipe 30, so that medium pressure relief is performed in the circumferential direction and the medium pressure relief is discharged, which substantially guarantees the alignment of the threaded pipe 30 and the threaded connection hole on the hough section, because the plurality of pressure relief holes arranged in the circumferential direction guarantee that the resultant force of the reaction force of the pressure relief medium in the radial direction of the threaded pipe 30 is as small as possible, and if the pressure relief holes are arranged at even intervals, the resultant force in the radial direction is substantially zero, naturally, the alignment is easily realized when the threaded pipe 30 is initially installed, in other words, the threaded pipe 30 is easily adjusted to the alignment position and is easily and stably maintained at the alignment position. In the embodiment shown in the attached drawings, four through holes 31 are circumferentially distributed at intervals at 90 degrees among the through holes 31, pressure media are discharged and decompressed towards four directions, and the resultant force of the counterforce given by the drainage on the plug is almost zero in a radial plane in the pressure and drainage processes, so that centering is very convenient during initial assembly.

Furthermore, the through holes 31 are arranged at intervals in the axial direction of the pipe wall of the threaded pipe 30, that is, when a plurality of through holes 31 are provided, the hole cores of the through holes 31 do not need to be arranged in the same cross section perpendicular to the hole core direction, that is, the through holes are staggered at intervals in the axial direction, so that the missing parts of the threads in the same pipe section due to the opening are reduced as much as possible, in other words, the broken lines in the circumferential direction due to the opening can be reduced to the minimum degree.

Further, the concave-convex part 20 on the outer side plate surface of the blocking cover plate 10 is a four-or hexagonal-shaped convex head, the four-or hexagonal-shaped convex head can be suitable for an existing common wrench, the head part of the wrench clamps the concave-convex part 20, force in the direction of rotation of the threads can be applied to the blocking cover plate 10 and even the whole plug, the whole plug is driven to rotate, and the disassembly or installation process is facilitated.

The threaded pipe 30, which is located at both sides of the through hole 31 in the longitudinal direction, has at least four threads, which is to ensure the reliability of threaded connection while ensuring the safe pressure relief flow. Additionally, the utility model discloses can adopt sealing washer 4's mode to realize sealed, also can the coiling raw rubber belt implement sealed on the complete screw thread pipeline section that persists.

Furthermore, in order to ensure that the tooth profile of the thread and the subsequent thread engagement are not affected, the through hole 31 is a circular hole or an elliptical hole, and generally, a circular hole can be adopted, thereby being beneficial to actual processing.

The specific use method comprises the following steps: when accidents such as pipeline breakage occur, after the broken pipeline is hermetically connected by utilizing the two half-body half-bodies, the pressure relief holes in the half-bodies half.

Claims (6)

1. The utility model provides a ha fujie pressure release end cap, includes blanking cover board (10), has on the outside face of blanking cover board (10) to be convenient for adopt the instrument to implement to twist concave-convex part (20) of revolving, its characterized in that: the inner side plate surface of the blocking cover plate (10) is connected with one end of a threaded pipe (30) in a blocking mode, the other end of the threaded pipe (30) is in a free state, and a through hole (31) penetrating through the pipe wall is formed in the pipe wall.

2. The half joint pressure relief plug according to claim 1, characterized in that: the through holes (31) are arranged at intervals in the circumferential direction of the pipe wall of the threaded pipe (30).

3. The half joint pressure relief plug according to claim 1 or 2, characterized in that: the through holes (31) are arranged at intervals in the axial direction of the pipe wall of the threaded pipe (30).

4. The half joint pressure relief plug according to claim 1 or 2, characterized in that: the concave-convex part (20) on the outer side plate surface of the blocking cover plate (10) is a four-or hexagonal convex head.

5. The half joint pressure relief plug according to claim 1 or 2, characterized in that: the section of the threaded pipe (30) which is positioned on two sides of the through hole (31) in the pipe length direction is provided with at least four threads.

6. The half joint pressure relief plug according to claim 1 or 2, characterized in that: the through hole (31) is a round hole or an elliptical hole.

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