CN205908903U - Take screw ferrule in pressure release hole - Google Patents

Abstract

The utility model belongs to a general machinery field relates to a take screw ferrule in pressure release hole. Including a first short circuit and a second short circuit that is equipped with the internal screw thread ferrule and locates the band edge face at ferrule both ends respectively, the lateral wall middle part of ferrule is equipped with the pressure relief vent, first short circuit includes, the first linkage segment that connects gradually, first connection terminal surface, the inside inner through hole of first external screw thread, the boss that first outer threaded end establishes and first short circuit who is connected with the ferrule, the second short circuit includes, the second linkage segment that connects gradually, second connection terminal surface, the outer recess of being connected with the ferrule that threaded end establishes of second external screw thread, second and the inner through hole inside the second short circuit. The utility model has the advantages of simple structure, convenient to use, non -maintaining, can be comparatively safe, convenient and fast lay down the pressure in the pipeline under pressure system, eliminate the potential safety hazard of area when pressing the dismouting, security when improving the pipe -line system maintenance.

Description

A threaded pipe collar with a pressure relief hole

technical field

The utility model belongs to the field of general machinery and relates to a pipe clamp used in a pipeline system with pressure.

Background technique

In the prior art, in the pipeline system with pressure such as steam and compressed air, when the pipeline needs to be repaired or the parts in the pipeline need to be replaced, it is necessary to close the valve of the upper stage and remove the pressure in the pipeline to repair or replace. In order to be able to relieve the pressure in the pipeline more safely and quickly, and to ensure the convenience of maintenance, it is often necessary to install a large number of pressure relief branches and valves in the pipeline to meet the pressure stability and maintenance needs of the main pipeline. It will inevitably increase the workload of equipment investment and maintenance. In actual work, not all pipelines are suitable for installing pressure relief pipelines. For example, it is not suitable to install pressure relief pipelines in front of pressure gauges. When the pressure gauge needs to be replaced, although the valve in front of the pressure gauge is closed, the valve and pressure There is still a relatively high pressure medium in the pipeline between the gauges. At this time, the pressure gauge must be disassembled under pressure, which has certain potential safety hazards. Therefore, in view of these defects, it is still of great significance to develop a new and safer pressure relief device.

Contents of the invention

The purpose of the utility model is to provide a novel threaded pipe collar with a pressure relief hole, so as to facilitate the construction and application of the pressurized pipeline.

The technical solution adopted by this application is described in detail as follows.

A threaded pipe collar with a pressure relief hole, comprising a pipe collar provided with an internal thread, and first and second shorts with end faces respectively arranged at both ends of the pipe collar;

The middle part of the side wall of the pipe hoop is provided with a pressure relief hole, and in the preferred design, the pipe hoop is a hexagonal pipe hoop;

The first short connection includes a first connecting section (threaded connection or flange connection) connected in sequence for connecting pipes, a first connecting end surface, a first external thread connected with a pipe collar, a first external thread end The boss provided on the part for sealing and the internal through hole inside the first short circuit; the first connecting section and the first external thread are connected by the first end face to form a whole;

The second short connection includes a second connecting section (threaded connection or flange connection), a second connecting end surface, a second external thread connected with a pipe collar, and a second external thread end connected in sequence. The sealing groove provided on the part and the internal through hole inside the second short circuit; the second connecting section and the second external thread are connected by the second end surface to form a whole.

The technical principle of this application is that after adopting the threaded pipe clamp with pressure relief hole provided by this application, the first short-connected boss and the second short-connected groove meet in the middle of the pipe clamp, which has better sealing function to ensure the stability of the pressure in the pipeline under pressure; when it is necessary to relieve pressure, after closing the upper valve, slightly loosen the first or second short connection, so that the sealing effect between the boss and the groove is released, and the pressure pipeline The pressure medium in the pipe can be discharged along the pressure relief hole on the pipe collar to relieve the pressure in the pipe. Since the reliability of the pipeline connected by the thread is not reduced at this time, there is no potential safety hazard at this time, and the pipeline components can be repaired or replaced more conveniently and quickly.

Generally speaking, the utility model is suitable for the application of non-toxic and harmless pressurized pipeline systems such as compressed air and steam, and has the advantages of simple structure, convenient use and maintenance-free; The pressure in the pipeline system under pressure eliminates the safety hazards during disassembly and assembly under pressure, improves the safety of the pipeline system maintenance, improves the maintenance efficiency of the pipeline system and reduces the maintenance cost of the pipeline system.

Description of drawings

Fig. 1 is a schematic structural view of a threaded pipe collar with a pressure relief hole provided by the present invention.

detailed description

The application will be further explained below in conjunction with the accompanying drawings.

Example

A threaded pipe collar with a pressure relief hole, comprising a pipe collar 2 with an internal thread and first and second shorts with end faces respectively arranged at both ends of the pipe collar 2;

The middle part of the side wall of the pipe collar 2 is provided with a pressure relief hole 7, and the pipe collar 2 is preferably a hexagonal pipe collar;

The first short connection includes the first connection section 4 connected in sequence for connecting the pipeline (the external thread connection is used in the figure, and flange connection or other connection methods can also be used), the first connection end surface 1, and the pipe The first external thread 5 connected by the hoop 2, the sealing boss 6 at the end of the first external thread 5 and the internal through hole 11 inside the first short circuit; the first connecting section 4 and the first external thread 5 are connected by the first One end surface 1 is connected to form a whole;

The second short connection includes, the second connection section 10 for connecting the pipeline connected in sequence (the external thread connection is used in the figure, and the flange connection or other connection methods can also be used), the second connection end surface 3, and the pipe The second external thread 9 connected by the hoop 2, the groove 8 for sealing function provided at the end of the second external thread 9 and the internal through hole 11 inside the second short circuit; the second connecting section 10 and the second external thread 9 are formed by The second end surface 3 is connected to form a whole.

During specific use, when the threaded pipe collar with a pressure relief hole provided by the utility model is connected to the pressurized pipeline system, the first short-connected first connecting section 4 and the second short-connected second connecting section 10 are connected with the belt Pressurize piping system connections and keep them leak-tight. The first external thread 5 and the second external thread 9 are respectively screwed into the pipe collar 2, and in the middle of the pipe collar 2, the boss 6 and the groove 8 that play a sealing role meet here, and under the action of the pre-tightening force, the seal is sealed. A line seal is formed between the boss 6 and the groove 8, so as to ensure that the pressure medium in the pressurized pipeline does not leak (because it is a line seal, a good sealing effect can be achieved without too much pre-tightening force).

When it is necessary to remove the internal pressure of the pressurized pipeline, after closing the upper-level valve, loosen the first short-connection or the second short-connection slightly, so that the sealing relationship between the boss 6 and the groove 7 is released. At this time, the pressure medium in the pipeline It can be discharged from the pressure relief hole 7, so that the pressure in the pressurized pipeline is released, and at this time, the maintenance of the pressurized pipeline system can be performed relatively safely and quickly.

It should be noted that when the pressure is relieved, the first or second short connection and the pipe collar 2 only need to be loosened slightly. Since the thread connection strength has not changed significantly at this time, the process of this loosening and pressure relief is There is no potential safety hazard, and it is relatively safe and reliable.

Claims (2)

1. A threaded pipe clamp with a pressure relief hole, characterized in that it comprises a pipe clamp provided with an internal thread and a first short-connection and a second short-connection with end faces respectively arranged at both ends of the pipe clamp; A pressure relief hole is provided in the middle of the side wall of the pipe collar, The first short connection includes the first connecting section connected in sequence, the first connection end surface, the first external thread connected with the pipe collar, the boss provided at the end of the first external thread, and the internal passage inside the first short connection. hole; The second short connection includes the second connecting section connected in sequence, the second connection end surface, the second external thread connected with the pipe collar, the groove provided at the end of the second external thread, and the internal passage inside the second short connection. hole. 2. The threaded pipe collar with a pressure relief hole according to claim 1, wherein the pipe collar is a hexagonal pipe collar.