CN108468900A - Pressure vessel and piping internal pressure self-tightening device for plugging and its method - Google Patents

Abstract

The present invention relates to a kind of pressure vessel and piping internal pressure self-tightening device for plugging; including the interior injected rubber hose for setting glue injection channel; one end of the injected rubber hose is glue-feeder, the other end is gum outlet, is provided on the injecting glue tube end of gum outlet side for gathering or distracted umbrella cover.The structure of the pressure vessel and piping internal pressure self-tightening device for plugging is simple.

Description

Pressure vessel and pipeline internal pressure self-tightening plugging device and method thereof

technical field

The invention relates to a pressure vessel and pipeline internal pressure self-tightening leak plugging device and a method thereof, which are applied to small-diameter leak plugging of pressure vessels or transportation pipelines.

Background technique

Pressure vessels and pipelines are widely used in industrial and agricultural production. However, due to the continuous corrosion and erosion of the medium conveyed by pressure vessels or pipelines, as well as the influence of temperature, vibration, and human factors, leakage often occurs during their operation. Disposal can lead to waste of resources, environmental pollution, stoppage of work and production, and even fire and explosion accidents, causing serious losses to people's lives and property. Therefore, it is often required to deal with pipeline leakage points without stopping production and fire, so as to minimize leakage losses and avoid accidents.

Traditional pipeline plugging technologies mainly include pressure drainage welding sealing technology, pressure reverse welding sealing technology, pressure bonding technology, plug hole plugging method, steel belt tensioning technology, rapid binding technology, and injection sealing technology. The pressure drainage welding sealing technology and the pressure reverse welding sealing technology require welding fire, which is not suitable for the plugging operation of flammable and explosive pipelines. Although the bundling technology does not require prefabrication and overcomes the shortcoming of long prefabrication time for clamps, it can only be used for low-pressure pipelines and valve bodies. For high-pressure leaks, especially when the leak is located at the root of the main pipeline, there is a lack of The operability and stability cannot achieve the expected plugging purpose. For small-diameter leaks, the traditional plugging method requires a lot of work and takes a long time. The existing on-line plugging methods all focus on forcibly plugging from the outside of the container or pipeline. Because the pressure inside the equipment needs to be overcome, not only the plugging is difficult, the cost of the plugging device is high, but also the risk is great.

Contents of the invention

In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a pressure vessel and pipeline internal pressure self-tightening leak plugging device and its method, which are not only simple in structure, but also convenient and efficient.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a self-tightening plugging device for pressure vessels and pipelines, including a glue injection pipe with a glue injection channel inside, one end of the glue injection pipe is a glue inlet, the other end For the glue outlet, the end of the glue injection pipe on the side of the glue outlet is provided with an umbrella surface for folding or stretching.

Preferably, the glue injection pipe is a straight pipe, the glue inlet is located on the end surface of the glue injection pipe and communicates with the glue injection channel, the number of the glue outlets is several and the circumference of the glue injection pipe is uniformly distributed, The glue outlet communicates with the glue injection channel.

Preferably, the glue inlet is provided with an internal thread and screwed with a leak-proof bolt.

Preferably, the middle front outer periphery of the injection pipe is provided with an external thread and is screwed with a fastening nut.

Preferably, the stretched shape of the umbrella surface is conical, and the tip of the small head of the umbrella surface is provided with a mounting hole, and the outer periphery of the end edge of the injection tube on the side of the glue outlet is provided with an annular mounting groove. , the hole edge of the installation hole is located in the annular installation groove, and the end of the glue injection pipe on the side of the glue outlet is screwed with a fixing device for pressing the tip of the small head of the umbrella surface in the annular installation groove. bolt.

Preferably, the stretched shape of the umbrella surface is conical, and there are several upper circular holes evenly distributed on the circumference of the tip of the small head of the umbrella surface, and several lower circles are evenly distributed on the circumference of the large open edge of the umbrella surface. The upper round hole is interspersed with an upper thin iron wire, wherein the upper thin iron wire penetrates from top to bottom along one upper round hole and then passes out from the other adjacent upper round hole from bottom to top, so reciprocating until the upper The two ends of the thin iron wire are butt welded into a ring shape, and the lower round hole is interspersed with a lower thin iron wire, and the lower thin iron wire penetrates from top to bottom along one lower round hole and then from bottom to top through another adjacent lower round hole Pass through, so reciprocating until the two ends of the lower thin iron wire are butt-welded into a ring; the circumference of the umbrella surface is evenly distributed with three rows of side circular holes, and each row of side circular holes is evenly spaced along the side edges of the conical umbrella surface. The cloth has several side round holes, each row of side round holes is interspersed with side thin rods, wherein the side thin rods penetrate from top to bottom along one side round hole and then from bottom to top through another adjacent side round hole The upper end of each side thin rod is butt-welded with the upper thin iron wire, and the lower end is butt-welded with the lower thin iron wire; the non-end of the injection pipe is provided with an annular groove, and the thin iron wire is wound on the annular groove Three thin iron wire stays are welded on the thin iron wire ring, and the other ends of the three thin iron wire stays are respectively butt-welded with the same horizontal height position of the three side thin rods.

A leak plugging method for a pressure vessel and a pipeline internal pressure self-tightening leak plugging device, which is carried out according to the following steps: (1) When the leak is at the end of the pipeline, clean the leak and perform pretreatment. If the leak is a tortuous hole, it needs to be Lead it into a straight hole. The initial umbrella surface is tightly bound on the outer circumference of the injection pipe. After pretreatment of the leak hole, insert the device into the leak hole until the umbrella surface completely enters the inner wall of the container or pipe, and then start to use the glue injector to inject. Glue, the colloid overflows from the glue outlet after passing through the glue injection channel, and slowly stretches the converging umbrella surface; (2) After injecting a specified amount of glue, the umbrella surface is stretched, and the umbrella surface is under the action of the internal and external pressure difference. The inner wall of the container or pipe is tightly fitted to achieve a self-tight seal. At this time, you can observe whether the injection pipe can move outward to judge whether the umbrella surface is tightly attached to the inner wall of the container or pipe; (3) Continue to use the glue injector to inject glue, The umbrella surface continues to be stretched. When the colloid fully stretches the umbrella surface, the rubber injection tube cannot move outward. At this time, the colloid has filled the inner space of the umbrella surface, and the thin wire rope and side thin rods at the bottom of the umbrella surface are pulled to the limit. (4) Continue to inject an appropriate amount of colloid, so that the colloid overflows from the gap between the leakage hole and the injection tube, until the colloid completely fills the gap, and then stop the injection; (5) Tighten the fastening nut, Fix the device tightly on the pipeline, release the glue injector, and lock the leak-proof bolts to prevent the glue from overflowing from the glue injection channel.

Preferably, when the leakage location is at the periphery of the pipeline, it is necessary to open a leakage hole on the end surface of the pipeline first. After the leakage hole is pretreated, the device is inserted into the leakage hole until the umbrella surface completely enters the inner wall of the container or pipeline, and then starts to use. The glue injector injects glue, and repeats steps (2)-(5) until the umbrella surface is tight and the leakage point around the pipe is blocked.

Compared with the prior art, the present invention has the following beneficial effects: the structure of the pressure vessel and pipeline internal pressure self-tightening leak plugging device is simple, compared with the traditional need to stop production and plugging, the use of this device can realize rapid on-line repair of pressure vessels or pipelines Leakage repair, making full use of the pressure difference between the inside and outside of the container or pipeline to form an internal self-tight seal. After the injection gel solidifies, a dense tissue is formed to completely fill the leakage channel. Compared with commonly used and complicated leakage plugging devices, the structure of the present invention is greatly simplified, easy to carry, and convenient to construct.

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

FIG. 1 is a first structural schematic diagram of an embodiment of the present invention.

FIG. 2 is a second schematic diagram of the structure of the embodiment of the present invention.

FIG. 3 is a partial enlarged view of A in FIG. 2 .

Fig. 4 is a schematic diagram of the working state of the embodiment of the present invention.

Fig. 5 is a schematic diagram of the structure of the umbrella surface in the embodiment of the present invention.

Detailed ways

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

As shown in Figures 1 to 5, a pressure vessel and pipeline internal pressure self-tightening plugging device includes a glue injection tube 2 with a glue injection channel 1 inside, one end of the glue injection tube is a glue inlet 3, and the other end is a glue outlet. The rubber port 4 is provided with an umbrella surface 5 for folding or stretching on the end of the rubber injection pipe on the side of the glue outlet.

In the embodiment of the present invention, the glue injection pipe is a straight pipe, the glue inlet is located on the end surface of the glue injection pipe and communicates with the glue injection channel, and the number of the glue outlets is several and is evenly distributed on the circumference of the glue injection pipe. The peripheral part, the glue outlet communicates with the glue injection channel.

In the embodiment of the present invention, the glue inlet is provided with an internal thread and is screwed with a leak-proof bolt 6 .

In the embodiment of the present invention, an external thread 7 is provided on the middle front outer peripheral portion of the injection pipe and a fastening nut 8 is screwed thereto.

In the embodiment of the present invention, the stretched shape of the umbrella surface is conical, the tip of the small head of the umbrella surface is provided with a mounting hole 9, and the glue injection tube is provided on the outer periphery of the end edge on the side of the glue outlet There is a ring-shaped installation groove 10, the edge of the installation hole is located in the ring-shaped installation groove, and the end of the glue injection pipe on the side of the glue outlet is screwed with a small head tip for pressing the umbrella surface on the ring-shaped groove. Install the fixing bolt 11 in the groove.

In the embodiment of the present invention, the stretched shape of the umbrella surface is conical, and several upper circular holes 12 are evenly distributed on the circumference of the tip of the small head of the umbrella surface. There are several lower round holes 13, and upper thin iron wires 14 are interspersed on the upper round holes, wherein the upper thin iron wires penetrate from top to bottom along one upper round hole and then go from bottom to top through another adjacent upper round hole. Go out, reciprocate like this until the two ends of the upper thin iron wire are butt-welded into a ring, and the lower thin iron wire 15 is inserted through the lower round hole, and the lower thin iron wire penetrates from top to bottom along a lower round hole and then from another corresponding The adjacent round holes pass through from bottom to top, and reciprocate in this way until the two ends of the lower thin iron wire are butt-welded into a ring; the circumference of the umbrella surface is evenly distributed with three rows of side round holes, and each row of side round holes is along the The side edges of the conical umbrella cover are evenly distributed with several side round holes 16, and each row of side round holes is interspersed with side thin rods 17, wherein the side thin rods penetrate from top to bottom along one side round hole and then pass through from the other side round hole. An adjacent side round hole passes through from bottom to top, the upper end of each side thin rod is butt-welded with the upper thin iron wire, and the lower end is butt-welded with the lower thin iron wire; an annular groove is opened on the non-end of the injection pipe 21. A thin iron wire ring 22 is wound on the annular groove, and three thin iron wire stay ropes 23 are welded on the thin iron wire ring, and the other ends of the three thin iron wire stay ropes are respectively butt-welded with the same horizontal height position of the three side thin rods connect.

In the embodiment of the present invention, the umbrella surface is made of a flexible material, such as tinfoil, and the glue used for glue injection has a relatively high viscosity.

A leak plugging method for a pressure vessel and a pipeline internal pressure self-tightening leak plugging device, which is carried out according to the following steps: (1) When the leak location is on the end face of the pipeline 18, clean the leak location and perform pretreatment, if the leak point is a tortuous hole, It needs to be guided into a straight hole, and the initial umbrella surface is tightly bound on the outer circumference of the injection pipe. After pretreatment of the leakage hole 19, insert the device into the leakage hole until the umbrella surface completely enters the inner wall of the container or pipe, and then start to use the glue injection The glue is injected by the device, and the colloid 20 overflows from the glue outlet after passing through the glue injection channel, and slowly stretches the converging umbrella surface; (2) After the specified amount of glue is injected, the umbrella surface is stretched, and the umbrella surface Under the action, it tightly fits the inner wall of the container or pipe to achieve a self-tight seal. At this time, you can observe whether the injection tube can move outward to judge whether the umbrella surface is tightly attached to the inner wall of the container or pipe; (3) Continue to use the glue injector After injecting glue, the umbrella surface continues to stretch. When the glue fully stretches the umbrella surface, the glue injection tube cannot move outward. At this time, the glue has filled the inner space of the umbrella surface. Pull it to the limit state, and the top corner of the umbrella surface is fixed; (4) Continue to inject an appropriate amount of colloid, so that the colloid overflows from the gap between the leak hole and the injection tube, until the colloid completely fills the gap, and stop the injection; (5) Lock it tightly Tighten the nut so that the device is tightly fixed on the pipe, release the glue injector, and lock the leak-proof bolt to prevent the glue from overflowing from the glue injection channel.

In the embodiment of the present invention, when the leakage location is at the periphery of the pipeline, it is necessary to open a leakage hole on the end surface of the pipeline first. After the leakage hole is pretreated, the device is inserted into the leakage hole until the umbrella surface completely enters the container or the inner wall of the pipeline. Finally, start to use the glue injector to inject glue, and repeat steps (2)-(5) until the umbrella surface is tightly attached and the leakage point around the pipe is blocked, which not only blocks the leakage point of the periphery, but also blocks the leakage hole .

The present invention is not limited to the above-mentioned optimal implementation mode, anyone can draw other various forms of pressure vessels and pipeline internal pressure self-tightening leakage plugging devices and methods thereof under the enlightenment of the present invention. All equivalent changes and modifications made according to the patent scope of the present invention shall fall within the scope of the present invention.

Claims (8)

1. a kind of pressure vessel and piping internal pressure self-tightening device for plugging, it is characterised in that：Including the interior injected rubber hose for setting glue injection channel, One end of the injected rubber hose is glue-feeder, the other end is gum outlet, is provided with and is used on the injecting glue tube end of gum outlet side Gathering or distracted umbrella cover.

2. pressure vessel and piping internal pressure self-tightening device for plugging according to claim 1, it is characterised in that：The injected rubber hose For straight tube, the glue-feeder is located on the end face of injected rubber hose and is connected to glue injection channel, and the quantity of the gum outlet is several And circumference uniform distribution, in the circumference of injected rubber hose, the gum outlet is connected to glue injection channel.

3. pressure vessel and piping internal pressure self-tightening device for plugging according to claim 1, it is characterised in that：The glue-feeder It is equipped with internal thread and is bolted with leakproof bolt.

4. pressure vessel and piping internal pressure self-tightening device for plugging according to claim 1, it is characterised in that：The injected rubber hose In preceding peripheral part be equipped with and external screw thread and be bolted with fastening nut.

5. pressure vessel and piping internal pressure self-tightening device for plugging according to claim 1, it is characterised in that：The umbrella cover It is cone to strut shape, and the microcephaly tip of the umbrella cover offers mounting hole, and the injected rubber hose is at the end positioned at gum outlet side Head edge peripheral part is equipped with annular mounting recess, and the peritreme of the mounting hole is located in annular mounting recess, and the injected rubber hose exists The fixing bolt for being pressed on the microcephaly tip of umbrella cover in annular mounting recess is bolted on the end of gum outlet side.

6. pressure vessel and piping internal pressure self-tightening device for plugging according to claim 1, it is characterised in that：The umbrella cover It is cone to strut shape, and the microcephaly tip of the umbrella cover is evenly distributed in circular hole on several, and the major part of the umbrella cover is open Edge is evenly distributed in several lower circular holes, and thin wire is interspersed on the upper circular hole, wherein upper thin wire is along a upper circle Hole is pierced by from another adjacent upper circular hole from bottom to top again after penetrating from top to down, and so on until the both ends pair of upper thin wire Be welded into annular, be interspersed with lower thin wire on the lower circular hole, lower thin wire along a lower circular hole penetrate from top to down after again from another One adjacent lower circular hole is pierced by from bottom to top, and so on until the both ends butt welding of lower thin wire circularizes；The week of the umbrella cover Portion is evenly distributed in three row's mother rib lateral rotundums row, often arranges mother rib lateral rotundum row and is evenly equipped with several mother rib lateral rotundums along the incline of conical umbrella cover, Often is interspersed with side thin bar on row's mother rib lateral rotundum row, wherein side thin bar along a mother rib lateral rotundum penetrate from top to down after it is adjacent from another again Mother rib lateral rotundum is pierced by from bottom to top, the upper end of every side thin bar with upper thin wire butt welding, lower end with lower thin wire butt welding；It is described Annular groove is offered on the non-end of injected rubber hose, and thin wire ring is wound on the annular groove, is welded on the thin wire ring The other end of three thin wire drawstrings, three thin wire drawstrings connects with the same level height and position butt welding of three side thin bars respectively It connects.

7. a kind of blocking method of pressure vessel and piping internal pressure self-tightening device for plugging, which is characterized in that using such as claim Any pressure vessel and piping internal pressure self-tightening device for plugging described in 1-6, and carry out according to the following steps：（1）Work as leak position In pipeline end face, leak position is cleared up, is pre-processed, if leakage point is tortuous hole, straight hole, initial umbrella cover need to be led into It is tightly convergent on injected rubber hose periphery, after being pre-processed to leak, the present apparatus is inserted into leak to umbrella cover completely into appearance After device or inner wall of the pipe, begin to use glue injection machine injecting glue, colloid after glue injection channel from gum outlet by overflowing, the umbrella cover that will be collected Slowly strut；（2）After injecting specified amount glue, umbrella cover, umbrella cover under the action of inside and outside differential pressure with container or inner wall of the pipe Tightly be bonded, realize self-tightening sealing, at this point it is possible to observe injected rubber hose whether can be displaced outwardly judge umbrella cover whether with container Or inner wall of the pipe is adjacent to；（3）It is continuing with glue injection machine injecting glue, umbrella cover persistently struts, when colloid struts umbrella cover completely, injecting glue Pipe can not be displaced outwardly, and colloid fills up umbrella cover inner space at this time, and umbrella cover lower part thin wire drawstring, side thin bar are pulled to pole Limit state, umbrella cover apex angle are fixed；（4）Continue to inject appropriate colloid, colloid made to be overflowed from the gap of leak and injected rubber hose, Until gap is filled up completely by colloid, stop injecting glue；（5）Fastening nut is locked, the present apparatus is made to be tightly secured on pipeline, is released Glue injection machine locks leakproof bolt, prevents colloid from being overflowed from glue injection channel.

8. the blocking method of pressure vessel and piping internal pressure self-tightening device for plugging according to claim 7, it is characterised in that： When leak position is in pipeline circumference, need first to open a leak holes in the pipeline end face, it, will after being pre-processed to leak The present apparatus be inserted into leak to umbrella cover completely into container or inner wall of the pipe after, begin to use glue injection machine injecting glue, repeat（2）-（5） Step, until umbrella cover is adjacent to and blocks the leakage point of pipeline circumference.