CN209876286U - Pipeline plugging device convenient to replace air bag - Google Patents

Abstract

The utility model relates to a pipeline plugging device convenient to replace gasbag. It includes the fluid pipe, the lock ring, the inflation gasbag, solid fixed ring and medium pipe, the inflation gasbag includes outer bag section and interior bag section, the port of interior bag section is fixed in between lock ring and the fluid pipe, gu fixed ring suit is in the periphery of fluid pipe and block between lock ring and fluid pipe, the medium pipe passes behind the lock ring and is fixed in on the solid fixed ring and link up with the medium cavity of inflation gasbag, the fluid pipe can be followed the relative lock ring of self length direction and removed and be used for controlling solid fixed ring and fluid pipe and the pressure between lock ring and the solid fixed ring. The pressure between the fixing ring and the fluid conduit and between the locking ring and the fixing ring are controlled by utilizing the movement between the fluid conduit and the locking ring, so that the rapid locking and loosening of the outer bag section and the inner bag section of the inflatable air bag are realized, and the rapid disassembly and installation of the inflatable air bag are realized.

Description

Pipeline plugging device convenient to replace air bag

Technical Field

The utility model belongs to the technical field of pipeline leaking stoppage equipment technique and specifically relates to a pipeline plugging device convenient to replace gasbag.

Background

The plugging technology can be divided into various forms according to the structural characteristics and the operation principle of equipment devices, and mainly comprises the following steps: suspension type shutoff, disk shutoff, cylinder shutoff, folding shutoff, bag formula shutoff etc.. The air bag type pipeline plugging device (pipeline plugging air bag for short) is used as pipeline plugging equipment mainly comprising an inflatable air bag, and the use principle is as follows: after the air bag is arranged in the pipeline opening, the air bag is expanded by methods such as inflation, and when the pressure in the air bag meets the specified requirement, the air bag can be firmly filled in the section of the whole pipeline by utilizing the direct contact relation between the outer wall of the air bag and the inner wall of the pipeline and the friction effect, so that the fluid in the target pipeline section can be quickly blocked, and the aim of sealing and blocking the pipeline opening of the target pipeline section can be fulfilled; by utilizing the structure principle, the pipeline plugging air bag is widely applied to the fields of leakage plugging and detection of fluid media such as oil passages, water passages, air passages and the like in a conveying pipeline or a storage container.

Chinese patent (CN109237195A) discloses a balloon type fluid pipeline plugging device, which comprises an expansion conduit 20, a locking ring 30, a locking bolt 40, a fluid conduit 50 extending through the locking bolt 40 along the central axis of the locking bolt 40, and a medium conduit 60 eccentrically disposed with respect to the fluid conduit 50 and extending through the locking bolt 40; wherein, the expansion conduit 20 comprises an outer bag tube part 21 with a port wall of a front port clamped between the locking ring 30 and the peripheral wall of the locking bolt 40 and locked on the locking bolt 40 through the locking ring 30, an inner bag tube part 22 formed in the tube space of the outer bag tube part 21 and distributed around the fluid conduit 50 after being folded and extended along the axial direction of the outer bag tube part 21 by the port wall of a rear port of the outer bag tube part 21, and a medium filling space a formed between the outer bag tube part 21 and the inner bag tube part 22 and communicated with the medium conduit 60, and the port wall of the inner bag tube part 22 is locked on the locking bolt 40; the inflation catheter 20 further includes an inner balloon ring portion 23 formed by radially bending the port wall of the inner balloon tube portion 22 toward the inner circumferential side of the inner balloon tube portion 22. Although this patent document also describes a structure for facilitating the installation and removal of the inflation catheter, the installation and removal of the inflation catheter still requires several steps, requires a plurality of operations for installing and replacing the inflation catheter, and is relatively troublesome to replace.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art existence, the utility model aims to provide a pipeline plugging device convenient to replace gasbag.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pipeline plugging device convenient for replacing an air bag comprises a fluid catheter, a locking ring sleeved on the periphery of the fluid catheter, an expansion air bag sleeved on the periphery of the fluid catheter and having an expansion function, a fixing ring used for fixing the expansion air bag on the locking ring and a medium catheter penetrating through the locking ring and used for guiding a medium into the expansion air bag, wherein the expansion air bag comprises an outer bag section and an inner bag section, the port of the outer bag section is fixed between the locking ring and the fixing ring, the outer bag section and the inner bag section are encircled to form a medium chamber used for filling the medium, the fixing ring is sleeved on the periphery of the fluid catheter and clamped between the locking ring and the fluid catheter, the medium catheter penetrates through the locking ring and then is fixed on the fixing ring and communicated with the medium chamber of the expansion air bag, the fluid conduit is movable relative to the locking ring along its length for controlling pressure between the retaining ring and the fluid conduit and between the locking ring and the retaining ring.

Preferably, the fluid conduit is threaded toward the outer periphery of one end of the locking ring, and the fluid conduit is threadedly attached to the locking ring.

Preferably, the fluid conduit is provided with a nut towards the locking ring and extending beyond the periphery of one end of the locking ring, the nut being in threaded connection with the fluid conduit and engaging the locking ring towards one side of the securing ring.

Preferably, the fluid conduit alignment fixing ring is provided with a step, and the port of the inner balloon section of the inflatable balloon is fixed between the step of the fluid conduit and the fixing ring.

Preferably, the step is radiused over the outer periphery of the fluid conduit.

Preferably, the inner periphery of the fixing ring is provided with threads, and the fluid conduit is threadedly coupled to the inner periphery of the fixing ring.

Preferably, one side of the locking ring facing the fixing ring is provided with a groove, the fixing ring is positioned in the groove, and the outer bag section of the inflatable air bag is positioned between the side wall of the groove and the peripheral wall of the fixing ring.

Preferably, the periphery of the fixing ring is provided with a ring bulge, and the port of the outer bag section of the expansion air bag is clamped between the ring bulge and the side wall of the groove.

Since the technical scheme is used, the utility model discloses utilize the removal between fluid pipe and the lock ring, control solid fixed ring and fluid pipe and lock ring and the solid fixed pressure between the ring to realize that the quick locking of the outer bag section of inflation gasbag and inner bag section is not hard up, realize quick dismantlement and the installation of inflation gasbag.

Drawings

FIG. 1 is a schematic cross-sectional view of a prior art bladder-type fluid conduit occlusion device;

fig. 2 is a schematic cross-sectional structure diagram of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an embodiment of the present invention;

FIG. 4 is a schematic view of an embodiment of the inflatable bladder of the present invention;

fig. 5 is a schematic cross-sectional view of a locking ring and a fixing ring according to an embodiment of the present invention.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 2 to 5, the present embodiment provides a pipeline plugging device convenient for replacing an air bag, which includes a fluid conduit 1, a locking ring 2 sleeved on an outer periphery of the fluid conduit 1, an inflatable air bag 3 sleeved on an outer periphery of the fluid conduit 1 and having an inflation function, a fixing ring 4 for fixing the inflatable air bag 3 on the locking ring 2, and a medium conduit 5 passing through the locking ring 2 and used for introducing a medium into the inflatable air bag 3, the inflatable air bag 3 includes an outer bag section 31 having a port fixed between the locking ring 2 and the fixing ring 4, and an inner bag section 32 formed by the outer bag section rotating and extending in a direction parallel to the fluid conduit 1, the port of the inner bag section 32 is fixed between the locking ring 2 and the fluid conduit 1, a medium chamber 33 for filling the medium is formed by the outer bag section 31 and the inner bag section 32, the fixing ring 4 is sleeved on an outer periphery of the fluid conduit 1 and is clamped between the locking ring 2 and the fluid conduit 1, the medium conduit 5 is fixed on the fixed ring 4 after passing through the locking ring 2 and is communicated with the medium chamber 33 of the inflatable air bag 3, and the fluid conduit 1 can move relative to the locking ring 2 along the length direction of the fluid conduit 1 so as to control the pressure between the fixed ring 4 and the fluid conduit 1 and between the locking ring 2 and the fixed ring 4.

Thus, when a medium (a liquid medium or a gas medium) is filled into the medium chamber 33 through the medium conduit 5 (the medium conduit is connected to an external device for introducing the medium) and the medium chamber 33 is filled with the medium, the inflatable bladder 3 is driven to deform so that the inflatable bladder 3 is engaged between the inner wall of the external pipe and the fluid conduit 1 and the deformation of the plugging device forms a seal between the inner wall of the external pipe and the fluid conduit 1, the entire plugging device is fixed to the external pipe, and then the fluid conduit 1 is used to introduce the liquid into the external pipe, thereby realizing functions such as emotion of the pipe or replacement of the liquid in the pipe; by utilizing the movement between the fluid conduit 1 and the locking ring 2, the pressure between the fixing ring 4 and the fluid conduit 1 and the pressure between the locking ring 2 and the fixing ring 4 are controlled, so that the rapid locking and loosening of the outer bag section 31 and the inner bag section 32 of the inflatable air bag 3 are realized, and the rapid disassembly and assembly of the inflatable air bag 3 are realized.

Further, one embodiment is: the periphery of the fluid conduit 1 towards one end of the locking ring 2 is threaded, and the fluid conduit is in threaded connection with the locking ring 2. The movement and fixation between the fluid line 1 and the locking ring 2 is achieved by a threaded connection between the fluid line 1 and the locking ring 2.

Further, a buckle or a spring and other structures can be arranged between the fluid conduit 1 and the locking ring 2 to realize the movement and fixation between the fluid conduit 1 and the locking ring 2.

Further, in the present embodiment, a nut 6 is provided on the outer periphery of the fluid conduit 1, which extends toward the lock ring 2 and beyond one end of the lock ring 2, and the nut 6 is screwed into the fluid conduit 1 and is fitted to the lock ring 2 toward the side of the fixed ring 4. The movement and fixation between the fluid conduit 1 and the locking ring 2 are controlled by using the nut, so that the pressure of the end part of the expansion air bag 3 is controlled, when the expansion air bag 3 is installed, the end heads of the outer bag section 31 and the inner bag section 32 of the expansion air bag 3 are respectively arranged between the fixing ring 4 and the fluid conduit 1 and between the locking ring 2 and the fixing ring 4, and the outer bag section 31 and the inner bag section 32 of the expansion air bag 3 can be fixed by screwing the nut 6; conversely, the disassembly process is reversed.

In order to fix the inner balloon section 32 of the inflatable balloon 3 between the fluid conduit 1 and the fixing ring 4, the fluid conduit 1 of the present embodiment is provided with a step 11 in alignment with the fixing ring 4, and the port of the inner balloon section 32 of the inflatable balloon 3 is fixed between the step 11 of the fluid conduit 1 and the fixing ring 4. The step 11 is provided not only to fix the inner balloon section 32 of the inflatable balloon 3, but also to fix the fixing ring 4 between the fluid line 1 and the locking ring 2

Further, in order to ensure that the fluid conduit 1 does not damage the inner balloon section 32 of the inflatable balloon 3, the step 11 is over-rounded with the outer circumference of the fluid conduit 1.

To facilitate fixation of the inner bag section 32 of the inflatable balloon 3, the inner circumference of the fixation ring 4 is provided with threads, and the fluid conduit 1 is threaded to the inner circumference of the fixation ring 4. Through fluid pipe 1 threaded connection in solid fixed ring 4, when installation inflation gasbag 3, can be fixed in earlier the interior bag section 32 of inflation gasbag 3 between fluid pipe 1 and solid fixed ring 4, then cooperate fluid pipe 1 and lock ring 2, place the outer bag section 31 of inflation gasbag 3 between fluid pipe 1 and lock ring 2, fixed fluid pipe 1 and lock ring 2, can realize the fixed of the outer bag section 31 of inflation gasbag 3, can be fixed the outer bag section 31 substep of the interior bag section 32 of inflation gasbag 3, avoid because the fixed condition that can cause mutual interference of while.

In order to fix the outer bag section 31 of the inflatable air bag 3 between the locking ring 2 and the fixing ring 4, the locking ring 2 of the present embodiment is provided with a groove 21 on the side facing the fixing ring 4, the fixing ring 4 is positioned in the groove 21, and the outer bag section 31 of the inflatable air bag 3 is positioned between the side wall of the groove 21 and the peripheral wall of the fixing ring 4. The inflatable air bag 3 is fixed by the pressure between the side wall of the groove 21 and the fixing ring 4

Further, the outer periphery of the fixing ring 4 is provided with a ring protrusion 41, and the port of the outer bag section 31 of the inflatable air bag 3 is clamped between the ring protrusion 41 and the side wall of the groove 21. The outer bag section 31 of the inflatable air bag 3 is pressed and fixed by the pressure between the annular projection 41 and the side wall of the groove 21.

Further, the fluid conduit 1 is provided with a flow guiding nozzle 7 for guiding liquid or gas into the fluid conduit.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims (8)

1. A pipeline plugging device convenient for replacing an air bag comprises a fluid catheter, a locking ring sleeved on the periphery of the fluid catheter, an expansion air bag sleeved on the periphery of the fluid catheter and having an expansion function, a fixing ring used for fixing the expansion air bag on the locking ring and a medium catheter penetrating through the locking ring and used for guiding a medium into the expansion air bag, and is characterized in that the expansion air bag comprises an outer bag section and an inner bag section, wherein the port of the outer bag section is fixed between the locking ring and the fixing ring, the inner bag section is formed by the outer bag section rotating and extending towards the direction parallel to the fluid catheter in a rotating mode, the port of the inner bag section is fixed between the locking ring and the fluid catheter, a medium cavity used for filling the medium is formed by the outer bag section and the inner bag section in a surrounding mode, the fixing ring is sleeved on the periphery of the fluid catheter and clamped between the locking ring and the fluid catheter, the medium catheter is fixed on the fixing ring after penetrating through the, the fluid conduit is movable relative to the locking ring along its length for controlling pressure between the retaining ring and the fluid conduit and between the locking ring and the retaining ring.

2. The apparatus of claim 1, wherein the fluid conduit is threaded toward the outer circumference of the locking ring at one end of the fluid conduit, the fluid conduit being threadably connected to the locking ring.

3. The device of claim 1, wherein the fluid conduit is provided with a nut disposed about an outer periphery of the fluid conduit toward the locking ring and extending beyond an end of the locking ring, the nut being threadably coupled to the fluid conduit and engaging the locking ring toward a side of the retaining ring.

4. The device of claim 1, wherein the fluid conduit alignment retainer ring is provided with a step, and the port of the inner balloon section of the inflatable balloon is secured between the step of the fluid conduit and the retainer ring.

5. The apparatus for facilitating balloon replacement of a pipeline occlusion device of claim 4, wherein the step is radiused over the outer circumference of the fluid conduit.

6. The device of claim 4 wherein the inner periphery of the retaining ring is threaded and the fluid conduit is threaded onto the inner periphery of the retaining ring.

7. The pipeline plugging device of claim 1 wherein the side of the locking ring facing the retainer ring is recessed, the retainer ring is positioned in the recess, and the outer bladder section of the inflatable bladder is positioned between the side wall of the recess and the peripheral wall of the retainer ring.

8. The pipeline plugging device convenient for replacing an air bag as claimed in claim 1, wherein the periphery of the fixing ring is provided with a ring bulge, and the port of the outer bag section of the inflatable air bag is clamped between the ring bulge and the side wall of the groove.