CN205424266U - Plugging device is pressed in pipeline area - Google Patents

Abstract

The utility model provides a pipeline sealing device under pressure, which comprises two positioning splints, a sealing briquetting block for sealing the pipeline, and a pressing mechanism for pressing the sealing briquetting block; the upper part of the positioning splint is provided with Mounting groove, the lower part of the positioning splint is provided with a threaded through hole, and the inner side of the positioning splint is provided with a positioning groove, and the positioning bolt is connected with the positioning groove after passing through the threaded through hole; the pressing mechanism includes a transmission plate and a transmission shaft, and the middle part of the transmission plate There is a connection through hole, the top of the transmission shaft has a radial circular hole, and the middle and lower part of the transmission shaft is provided with external threads, and the transmission shaft passes through the connection through hole on the transmission plate and is fixedly connected downwards with the blocking pressure block; The two ends of the plate are connected with the two positioning splints through the installation grooves on the upper part of the positioning splints. The utility model has the beneficial effects of simple structure, convenient operation, accurate positioning, fast installation and high efficiency.

Description

A pipeline pressure sealing device

technical field

The utility model relates to a leak plugging device under pressure, which belongs to the field of technical equipment for plugging and repairing when joints of chemical and natural gas pipelines leak, and in particular relates to a plugging device under pressure for pipelines.

Background technique

With the rapid development of modern oil extraction, oil refining, and petrochemical industries, enterprises are gradually transitioning to continuous and large-scale production processes, and the production process is also developing to high temperature, high pressure, and multiple material reaction conditions. Continuous production requires safe, stable and long-term normal operation of equipment systems. However, in the process of production, transportation, and storage, the pipes in the production equipment, especially the straight pipes, after being put into use for a long time, the pipe wall will be thinned due to erosion or corrosion, which may occur under the conditions of temperature and pressure. leakage. The leakage part where the leakage medium is in the state of temperature and pressure and external jet flow is often very thin, and cannot be shut down for maintenance at any time, so it is necessary to adopt non-stop pressure sealing technology.

There are two main traditional sealing methods: one is to make a fixture, measure the size of the leaking pipe, design the drawing of the fixture, install the fixture and inject glue to seal it. ; 2. Since the sealing cavity produced is relatively large, a large amount of sealant needs to be consumed to fill the sealing cavity; 3. Since the volume and weight of the fixture are determined according to the size of the pipeline, the weight and volume of the fixture that needs to be produced when encountering a large pipeline More difficult to install and operate. The second is to use the steel belt method to bundle and seal the leaking part. The disadvantage of this method is that because rubber is used as the sealing packing, it cannot meet the sealing needs of high temperature, high pressure and different media, and the rubber material is often affected by local extrusion. Pressure and damage can not play the role of sealing layer.

Utility model content

The problem to be solved by the utility model is to provide a pipeline pressure sealing device, which can be applied to the leakage of the welding root of the pipeline, and the leakage medium is in the state of temperature and pressure and external jet flow state, and has the advantages of simple operation, The advantages of fast installation speed and good sealing effect.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a pipeline pressure sealing device, including two positioning splints, a sealing block for sealing the pipeline, and a sealing block for pressing the sealing block the pressing mechanism;

The upper part of the positioning splint is provided with a mounting groove, the bottom of the positioning splint is provided with a threaded through hole, and the inner side of the positioning splint is provided with a positioning groove, and the positioning bolt is connected with the positioning groove after passing through the threaded through hole;

The pressing mechanism includes a transmission plate and a transmission shaft, the middle part of the transmission plate is provided with a connecting through hole, the top of the transmission shaft is provided with a radial circular hole, and the middle and lower part of the transmission shaft is provided with an external thread, so The transmission shaft passes through the connection through hole on the transmission plate and is fixedly connected downwards with the blocking pressure block;

The two ends of the transmission plate are connected with the two positioning splints through the installation grooves on the upper part of the positioning splints.

Further, the positioning groove is in the shape of a semi-circular arc, and is adapted to the end of the pipeline to be tested.

Further, the pressing mechanism further includes a rotating handle, and the rotating handle is connected to the transmission shaft through a round hole on the upper part of the transmission shaft.

Furthermore, an internal thread matching the external thread on the transmission shaft is provided in the connecting through hole, and the transmission plate is integrally connected with the transmission shaft through the cooperation of the internal thread and the external thread.

The utility model has the advantages and positive effects: it can quickly and effectively seal the leakage of the temperate and pressure straight pipe, solve the problem of low and unstable plugging efficiency of the pressure straight pipe, improve the work efficiency, and ensure safe operation of the pipeline. The device has the advantages of simple structure, convenient operation, accurate positioning, fast installation and high efficiency.

Description of drawings

Fig. 1 is the three-dimensional schematic view of the utility model;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is the top view of Fig. 1;

In the figure: 1-positioning splint; 2-blocking briquetting block; 3-transmission plate; 4-transmission shaft; 5-rotary handle;

101-thread through hole; 102-locating groove; 103-locating bolt; 104-installation groove; 301-connecting through hole; 401-round hole.

detailed description

As shown in Figures 1-4, the utility model provides a pipeline sealing device under pressure, which includes two positioning splints 1, a sealing block 2 for sealing the pipeline, and a sealing block 2 for pressing The pressing mechanism of the positioning splint 1 is provided with a mounting groove 104 at the top of the positioning splint 1, and a threaded through hole 101 is provided at the bottom of the positioning splint 1, and a positioning groove 102 is provided at the inner side of the positioning splint 1, after the positioning bolt 103 passes through the threaded through hole 101 Connect with the positioning groove 102.

The pressing mechanism comprises a transmission plate 3 and a transmission shaft 4, the middle part of the transmission plate 3 is provided with a connecting through hole 301, the top of the transmission shaft 4 is provided with a radial circular hole 401, the middle and lower part of the transmission shaft 4 is provided with an external thread, and the transmission shaft 4. After passing through the connection through hole 301 on the transmission plate 3, it is fixedly connected downwards with the blocking pressure block 2; the two ends of the transmission plate 3 are connected to the two positioning splints 1 through the installation groove 104 on the upper part of the positioning splint 1.

As a preferred technical solution, the positioning groove 102 is in the shape of a semicircle and fits with the end of the pipeline to be tested. The pressing mechanism also includes a rotary handle 5 which is connected to the transmission shaft 4 through a circular hole 401 on the top of the transmission shaft 4 . An internal thread matching the external thread on the transmission shaft 4 is provided in the connecting through hole 301 , and the transmission plate 3 is connected with the transmission shaft 4 as a whole through the cooperation of the internal thread and the external thread.

When in use, install the positioning splint 1 first, and use a wrench to tighten the positioning bolt 103 to fix the positioning groove 102 on the straight pipe section to be blocked; The drive shaft 4 moves downward, allowing the plugging briquetting block 2 to squeeze the leaking part to seal, so that the plugging process is completed, and the medium in the pipeline returns to normal delivery.

The basic principles, main features and advantages of the utility model have been shown above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the basic principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model The utility model also has various changes and improvements, and these changes and improvements all fall within the patent coverage of the claimed utility model scope. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (4)

1. A pipeline sealing device under pressure, characterized in that: it comprises two positioning splints, a sealing briquetting block for sealing the pipeline, and a pressing mechanism for pressing the sealing briquetting block; The upper part of the positioning splint is provided with a mounting groove, the bottom of the positioning splint is provided with a threaded through hole, and the inner side of the positioning splint is provided with a positioning groove, and the positioning bolt is connected with the positioning groove after passing through the threaded through hole; The pressing mechanism includes a transmission plate and a transmission shaft, the middle part of the transmission plate is provided with a connecting through hole, the top of the transmission shaft is provided with a radial circular hole, and the middle and lower part of the transmission shaft is provided with an external thread, so The transmission shaft passes through the connection through hole on the transmission plate and is fixedly connected downwards with the blocking pressure block; The two ends of the transmission plate are connected with the two positioning splints through the installation grooves on the upper part of the positioning splints. 2 . The device for sealing a pipeline under pressure according to claim 1 , wherein the positioning groove is in the shape of a semicircle and is adapted to the end of the pipeline to be tested. 3 . 3 . The pipeline sealing device under pressure according to claim 1 , wherein the pressing mechanism further includes a rotating handle, and the rotating handle is connected to the transmission shaft through a round hole on the upper part of the transmission shaft. 4 . 4. A pipeline sealing device under pressure according to claim 1, characterized in that: the connecting through hole is provided with an internal thread matching the external thread on the transmission shaft, and the transmission plate passes through the internal thread The thread and the external thread cooperate and are connected as a whole with the transmission shaft.