CN216923660U

CN216923660U - Blocking device with pressure

Info

Publication number: CN216923660U
Application number: CN202220096139.0U
Authority: CN
Inventors: 黄波
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-07-08
Anticipated expiration: 2032-01-14

Abstract

The utility model provides a blocking device under pressure, which relates to the technical field of blocking under pressure and comprises a blocking air bag, a conveying pipe, an inflating device and a sealing element, wherein the blocking air bag is communicated with the inflating device through the conveying pipe, the conveying pipe is sleeved on the sealing element in a sliding mode, the sealing element is used for sealing an opening of a valve far away from the side under pressure, and the conveying pipe is used for carrying the blocking air bag to penetrate through the valve. When the valve leaks, the plugging device can maintain the valve under the condition that the pressure of the equipment is not released; meanwhile, the plugging device is convenient to operate and low in learning cost; in addition, this plugging device's simple structure, the storage of being convenient for, and manufacturing cost is lower, and is higher to the price/performance ratio of small-size pipeline or pressure equipment's valve maintenance.

Description

Blocking device with pressure

Technical Field

The utility model relates to the technical field of under-pressure plugging, in particular to an under-pressure plugging device.

Background

When a tank root valve or a subsea valve leaks, a pressurized plugging construction method is often adopted to ensure that leakage accidents can be handled in time.

If the existing tank root valve or the seabed valve leaks in the using process, the conventional pressurized plugging equipment is high in cost and long in construction time, the requirements on sites during construction are high, the construction difficulty is high, and the linear cost ratio of some small pipes is extremely low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pressure plugging device which can maintain a leaking valve under the condition of pressure, and has the advantages of small construction difficulty of plugging operation and lower cost.

The embodiment of the utility model is realized by the following steps:

the utility model provides a blocking device with pressure, which comprises a blocking air bag, a conveying pipe, an inflating device and a sealing piece, wherein the blocking air bag is communicated with the inflating device through the conveying pipe, the conveying pipe is sleeved on the sealing piece in a sliding mode, the sealing piece is used for sealing an opening of a valve, which is far away from the side with pressure, and the conveying pipe is used for carrying the blocking air bag to penetrate through the valve.

In some embodiments of the utility model, the opening of the valve remote from the pressure side has a connecting flange, and the seal comprises a sealing flange matching the connecting flange, and a first sealing gasket is clamped between the sealing flange and the connecting flange.

In some embodiments of the present invention, the sealing element has a first through hole, the delivery tube is disposed in the first through hole, and the sealing assembly is clamped between the delivery tube and the first through hole.

In some embodiments of the present invention, the sealing assembly includes a second sealing gasket and a gland, the sidewall of the first through hole has a boss, the second sealing gasket is clamped between the boss and the gland, the gland is connected with the sealing member, the gland is provided with a second through hole, and the delivery pipe is disposed in the second through hole.

In some embodiments of the utility model, the second sealing gasket has a plurality, each of the plurality of second sealing gaskets being clamped between the boss and the gland.

In some embodiments of the utility model, a filler for sealing is sandwiched between any two adjacent second sealing gaskets.

In some embodiments of the utility model, an elastic sealing layer is laid in the second through hole and abuts against the outer side wall of the conveying pipe.

In some embodiments of the utility model, a hose is further included, and the delivery tube communicates with the inflation device through the hose.

In some embodiments of the utility model, the inflatable device further comprises a valve, the end of the inflatable device is communicated with the inflatable device through the valve, and the inflatable device is detachably connected with the valve.

In some embodiments of the utility model, the side wall of the delivery pipe away from the plugging air bag is provided with a pressure gauge for the internal pressure thereof, and the sealing member is positioned between the pressure gauge and the plugging air bag.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

the utility model provides a blocking device with pressure, which comprises a blocking air bag, a conveying pipe, an inflating device and a sealing element, wherein the blocking air bag is communicated with the inflating device through the conveying pipe, the conveying pipe is sleeved on the sealing element in a sliding mode, the sealing element is used for sealing an opening of a valve far away from the side with pressure, and the conveying pipe is used for carrying the blocking air bag to penetrate through the valve. When the valve leaks, the plugging device can maintain the valve under the condition that the pressure of the equipment is not released; meanwhile, the plugging device is convenient to operate and low in learning cost; in addition, this plugging device's simple structure, the storage of being convenient for, and manufacturing cost is lower, and is higher to the price/performance ratio of small-size pipeline or pressure equipment's valve maintenance.

When the valve is in actual use, if the valve is leaked and needs to be maintained, a maintenance worker puts the end part of the conveying pipe connected with the plugging air bag into an opening of the tank root valve far away from the side with pressure and seals the opening by a sealing element; the valve is opened, the openings at the two sides of the root valve of the tank are communicated, and at the moment, a maintenance worker pushes the conveying pipe to enable the plugging air bag to penetrate through the valve; then, the maintenance personnel use the inflation equipment to inflate the plugging air bag, and the pipeline connected with the valve is plugged after the plugging air bag expands, so that the fluid flowing to the valve is cut off, and the valve is convenient to repair; after the valve is repaired, the inflating equipment is separated from the conveying pipe, gas in the air bag can be discharged under the external pressure, a maintenance worker pulls the conveying pipe to withdraw the plugging air bag passing through the valve, then the valve is closed, the sealing element is detached from the valve, and the maintenance process can be completed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of a connection structure of a pressurized plugging device and a valve according to an embodiment of the utility model;

FIG. 2 is a sectional view of the internal structure of the pressurized plugging device connected to a valve according to the embodiment of the present invention;

FIG. 3 is an enlarged view of a portion A;

fig. 4 is an exploded view of a connecting structure of a pressurized plugging device and a valve according to an embodiment of the present invention;

FIG. 5 is a schematic view of a gland structure according to an embodiment of the present invention;

fig. 6 is a schematic view of a connection structure of a pressurized plugging device and a valve, in which a push-pull portion is four cylindrical handles according to an embodiment of the present invention;

FIG. 7 is a partial enlarged view of the point B;

fig. 8 is a schematic view of a connection structure of the pressurized plugging device with a pressure gauge and a valve according to the embodiment of the utility model.

Icon: 100-a valve; 1-blocking the air bag; 2-a conveying pipe; 3-an inflation device; 4-a connecting flange; 5-sealing the flange; 6-a first sealing gasket; 7-a first via; 8-a second sealing gasket; 9-pressing a cover; 10-boss; 11-a second via; 12-a first groove; 13-O-ring seal; 14-a connecting portion; 15-a filler; 16-a hose; 17-a push-pull part; 18-a second groove; 19-a camera; 20-a lighting device; 21-an elastomeric sealing layer; 22-valve; 23-pressure gauge.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or a positional relationship based on the orientation or the positional relationship shown in the drawings, or an orientation or a positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience and simplicity, and the indication or the suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, the present invention should not be construed as being limited. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, "a plurality" represents at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

Please refer to fig. 1 and fig. 2. Fig. 1 is a schematic view of a connection structure of a pressurized plugging device and a valve 100 according to an embodiment of the present invention; fig. 2 is a sectional view of the internal structure of the valve 100 after the pressurized plugging device according to the embodiment of the present invention is connected.

The utility model provides a blocking device with pressure, which comprises a blocking air bag 1, a conveying pipe 2, an inflating device 3 and a sealing piece, wherein the blocking air bag 1 is communicated with the inflating device 3 through the conveying pipe 2, the conveying pipe 2 is sleeved on the sealing piece in a sliding mode, the sealing piece is used for sealing an opening of a valve 100 far away from the side with the pressure, and the conveying pipe 2 is used for carrying the blocking air bag 1 to penetrate through the valve 100.

In the present embodiment, based on fig. 1 and 2, the leaky valve 100 is a half ball valve with model number PBQ640F-16, the valve 100 is used as a root valve, and one end of the valve is communicated with the bottom of a storage tank filled with fluid through a pipeline; the inflator 3 is an inflator with the model number of JM-F140. When the valve 100 leaks, the plugging device can maintain the valve 100 under the condition that the equipment is not decompressed; meanwhile, the plugging device is convenient to operate and low in learning cost; in addition, the plugging device has the advantages of simple structure, convenience in storage, lower production cost and higher cost performance when the valve 100 of a small pipeline or pressure equipment is maintained.

When the valve 100 is in actual use, if the valve 100 leaks and needs to be maintained, a maintenance worker puts the end part of the conveying pipe 2 connected with the plugging air bag 1 into an opening of the tank root valve far away from the pressure side, and seals the opening by using a sealing piece; the valve 100 is opened, the openings at the two sides of the root valve are communicated, and at the moment, a maintenance worker pushes the conveying pipe 2 to enable the plugging air bag 1 to penetrate through the valve 100; then, a maintenance person uses the inflating device 3 to inflate the plugging air bag 1, and the pipeline connected with the valve 100 is plugged after the plugging air bag 1 expands, so that the fluid flowing to the valve 100 is cut off, and the valve 100 is convenient to repair; after the valve 100 is repaired, the inflating device 3 is separated from the delivery pipe 2, the gas in the air bag can be discharged under the external pressure, the maintenance personnel withdraws the plugging air bag 1 passing through the valve 100 by pulling the delivery pipe 2, then closes the valve 100, and detaches the sealing element from the valve 100, thereby completing the maintenance process.

In other embodiments other than the above embodiment, the leaky valve 100 is a half ball valve of PBQ640F-16, the valve 100 is used as a subsea valve, and the inflator 3 is an inflator of JM-F140.

Example 2

Please refer to fig. 2 and fig. 3. Fig. 2 is a sectional view of the internal structure of the pressurized plugging device according to the embodiment of the present invention after being connected to the valve 100; fig. 3 is a partially enlarged view at a.

In this embodiment, based on the technical solution of embodiment 1, it is proposed that an opening of the valve 100 away from the pressure side has a connecting flange 4, the sealing element includes a sealing flange 5 matching with the connecting flange 4, and a first sealing gasket 6 is clamped between the sealing flange 5 and the connecting flange 4.

In the embodiment, based on fig. 2 and 3, the sealing flange 5 can be directly connected with the valve 100 through bolts, and the connection structure of the sealing flange is the same as that of a conventional flange connected with the valve 100, so that the learning cost of maintenance personnel is reduced; the sealing element is used as a temporary sealing part, the sealing performance in the maintenance process needs to be ensured, and the first sealing gasket 6 can meet the requirement.

Example 3

Please refer to fig. 2-5. Fig. 2 is a sectional view of the internal structure of the pressurized plugging device according to the embodiment of the present invention after being connected to the valve 100; FIG. 3 is a partial enlarged view of the point A; fig. 4 is an exploded view of a connection structure of a plugging device with pressure and a valve 100 according to an embodiment of the present invention; fig. 5 is a schematic structural view of a gland 9 according to an embodiment of the present invention.

The embodiment proposes based on the technical solution of embodiment 1 that a first through hole 7 is provided to the sealing member, the conveying pipe 2 is disposed in the first through hole 7, and a sealing assembly is clamped between the conveying pipe 2 and the first through hole 7.

In this embodiment, based on fig. 4, the conveying pipe 2 is a steel hollow circular pipe, the diameter of the first through hole 7 is larger than that of the conveying pipe 2, and the conveying pipe 2 is slidably disposed in the first through hole 7; the sealing assembly is provided to prevent the fluid in the valve 100 from leaking out of the gap between the first through hole 7 and the delivery pipe 2.

Further, the sealing assembly comprises a second sealing gasket 8 and a gland 9, the side wall of the first through hole 7 is provided with a boss 10, the second sealing gasket 8 is clamped between the boss 10 and the gland 9, the gland 9 is connected with the sealing element, the gland 9 is provided with a second through hole 11, and the conveying pipe 2 is arranged in the second through hole 11.

In this embodiment, based on fig. 2, 3 and 4, the second sealing gasket 8 abuts against the boss 10, the inner circle size of the second sealing gasket is slightly smaller than the outer diameter of the conveying pipe 2, and the conveying pipe 2 can be in interference fit with the second sealing gasket 8; the end part of the gland 9 far away from the second sealing gasket 8 is provided with a connecting part 14, and the connecting part 14 is fixedly welded with the sealing flange 5; the conveying pipe 2 is in clearance fit with the second through hole 11, and the conveying pipe 2 penetrates through the second sealing gasket 8 after penetrating through the second through hole 11 and finally extends out of the sealing flange 5. The conveying pipe 2 can slide along the second through hole 11, and the second sealing gasket 8 can guarantee the sealing requirement in the maintenance operation process.

In the above embodiment, based on fig. 2, 3 and 5, an annular first groove 12 is formed in the outer side wall of the gland 9, an O-ring 13 is sleeved in the first groove 12, and the O-ring 13 is clamped between the gland 9 and the side wall of the first through hole 7. The O-ring 13 increases the sealing effect between the gland 9 and the side wall of the first through hole 7, preventing part of the fluid from leaking therefrom.

In other embodiments except the above embodiments, the second sealing gasket 8 is made of asbestos rubber, the second sealing gasket 8 abuts against the boss 10, the size of the inner ring of the second sealing gasket 8 is slightly smaller than the outer diameter of the conveying pipe 2, and the conveying pipe 2 can be in interference fit with the second sealing gasket 8; the end part of the gland 9 far away from the second sealing gasket 8 is provided with a connecting part 14, and the connecting part 14 is fixedly connected with the sealing flange 5 through screws; the screw connection has the detachable characteristic, and when the second sealing gasket 8 needs to be replaced, the pressing cover 9 can be detached to be replaced.

Further, the second sealing gasket 8 has a plurality of second sealing gaskets 8, and each of the plurality of second sealing gaskets 8 is sandwiched between the boss 10 and the gland 9.

In this embodiment, based on fig. 3, the number of the second sealing gaskets 8 is two, the specifications are the same, and the two second sealing gaskets 8 are arranged in parallel; the conveying pipe 2 passes through the second through hole 11, then passes through the two second sealing gaskets 8, and finally extends out of the sealing flange 5. The plurality of second sealing gaskets 8 can enhance the sealing effect; meanwhile, if one second sealing gasket 8 fails in the maintenance process, the rest second sealing gaskets 8 can also play a certain sealing effect.

In other embodiments except the above embodiment, the number of the second sealing gaskets 8 is three, the specifications are the same, and the three second sealing gaskets 8 are arranged in parallel; the conveying pipe 2 passes through the second through hole 11, then passes through the three second sealing gaskets 8, and finally extends out of the sealing flange 5.

Further, a packing 15 for sealing is sandwiched between any two adjacent second sealing gaskets 8.

In this embodiment, based on fig. 3 and 4, the number of the second sealing gaskets 8 is two, the packing 15 is made of asbestos coated graphite packing, and the packing 15 is clamped between the two second sealing gaskets 8 and is compressed by the gland 9; the side wall of the conveying pipe 2 is in abutment with the packing 15. The high-quality asbestos packing coated with graphite has good lubricity, is fully immersed in oil, is mainly used as a packing 15 for dynamic seals, pumps and valves, and is suitable for mediums such as alkaline solution, viscous liquid, water, steam, gas, hot water, salt and the like. Due to the relative sliding between the conveying pipe 2 and the first through hole 7, the filler 15 can well seal the gap between the conveying pipe 2 and the first through hole 7, and therefore the risk of leakage is reduced.

In other embodiments except the above embodiment, the number of the second sealing gaskets 8 is three, the filler 15 is selected from oil-containing tetrafluoro asbestos packing, and the filler 15 is clamped between two adjacent second sealing gaskets 8; the oil-containing tetrafluoro asbestos packing is woven by soaking tetrafluoro with asbestos thread, the surface of the oil-containing tetrafluoro asbestos packing is treated by soaking with a tetrafluoro liquid and a special lubricant, namely silicone oil, the oil-containing tetrafluoro asbestos packing can not erode stainless steel or chromium-plated materials, and the oil-containing tetrafluoro asbestos packing is suitable for various liquids such as alkalis, dilute inorganic acids, water, steam, organic acids, oils, alcohols and the like.

Furthermore, an elastic sealing layer 21 which is abutted against the outer side wall of the conveying pipe 2 is laid in the second through hole 11.

In the present embodiment, based on fig. 3, the elastic sealing layer 21 is a silicone layer, and the conveying pipe 2 abuts against the silicone layer. The elastic sealing layer 21 can increase the sealing effect between the delivery pipe 2 and the gland 9; meanwhile, the elastic sealing layer 21 can be compressed, so that the sealing effect can be ensured for the conveying pipes 2 with different diameters in a certain range.

In other embodiments than the above described embodiment, the elastomeric sealing layer 21 is a polyurethane layer.

Example 4

Please refer to fig. 1, fig. 2 and fig. 4. Fig. 1 is a schematic view of a connection structure of a pressurized plugging device and a valve 100 according to an embodiment of the present invention; fig. 2 is a sectional view of the internal structure of the pressurized plugging device according to the embodiment of the present invention after being connected to the valve 100; fig. 4 is an exploded view of a connection structure of a pressurized plugging device and a valve 100 according to an embodiment of the present invention.

The present embodiment is proposed based on the technical solution of embodiment 1, and further includes a hose 16, and the conveying pipe 2 is communicated with the inflator 3 through the hose 16.

In the present embodiment, based on fig. 1 and 4, as compared to directly connecting the inflator 3 to the delivery pipe 2, connecting a hose 16 between the inflator 3 and the delivery pipe 2 enables the placement of the inflator 3 to be relatively free, and when the distribution of the pipelines around the position of the valve 100 to be repaired is relatively complicated or it is difficult to place the inflator 3 due to the terrain, the inflator 3 can be placed at a relatively distant place and communicated with the delivery pipe 2 through the hose 16. The provision of the hose 16 increases the applicability of the product.

Further, the inflating device comprises a valve 22, the end part of the inflating device 3 is communicated with the inflating device 3 through the valve 22, and the inflating device 3 is detachably connected with the valve 22.

In the embodiment, based on fig. 2, the valve 22 is a valve 22 used for a common automobile tire, the valve 22 is installed at the end of the delivery pipe 2, the outer peripheral edge of the valve 22 does not exceed the outer peripheral edge of the delivery pipe 2, and the inflation device 3 can inflate the plugging airbag 1 through the valve 22; when the valve 100 needs to be replaced, the inflating device 3 is connected with the valve cock 22 and inflates the plugging airbag 1, after the plugging airbag 1 is inflated, the inflating device 3 and the valve cock 22 can be detached, and because the valve cock 22 has the function of one-way check, the gas in the plugging airbag 1 cannot leak from the valve cock 22; at this time, the damaged valve 100 can be removed by detaching the valve 100 from the storage tank, sliding the valve 100 and the sealing member along the delivery pipe 2, and sliding out from the valve 22 end; because the peripheral edge of the valve 22 does not exceed the peripheral edge of the delivery pipe 2, the valve 22 cannot block the disassembly of the valve 100 and the sealing element; after removal, the seal and the new valve 100 are installed into the tank in the reverse operation; because the valve 22 also has the function of deflation, at this time, the gas in the plugging air bag 1 is discharged through the valve 22, and then the plugging device is detached according to the operation opposite to the operation of installing the plugging device, so that the replacement operation of the valve 100 can be completed.

Example 5

Please refer to fig. 8. Fig. 8 is a schematic view of a connection structure of a pressurized plugging device with a pressure gauge 23 and a valve 100 according to an embodiment of the present invention.

The present embodiment proposes based on the technical solution of embodiment 1 that a pressure gauge 23 for internal pressure is provided on the side wall of the delivery pipe 2 away from the plugging air bag 1, and the sealing member is located between the pressure gauge 23 and the plugging air bag 1.

In the present embodiment, based on fig. 8, a pressure gauge 23 of type Y-100AZ is selected to monitor the pressure in the delivery tube 2 and the plugging bladder 1, so as to prevent the occurrence of rupture of the plugging bladder 1 due to over inflation.

Example 6

Please refer to fig. 2, fig. 6, fig. 7 and fig. 8. Fig. 2 is a sectional view of the internal structure of the pressurized plugging device according to the embodiment of the present invention after being connected to the valve 100; fig. 6 is a schematic view of a connection structure of a pressurized plugging device with four cylindrical handles and a valve 100, wherein the push-pull part 17 is provided with the four cylindrical handles according to the embodiment of the utility model; FIG. 7 is a partial enlarged view of the point B; fig. 8 is a schematic view of a connection structure of a pressurized plugging device with a pressure gauge 23 and a valve 100 according to an embodiment of the present invention.

In the present embodiment, based on the technical solution of embodiment 1, it is proposed that the end of the delivery tube 2 away from the occlusion balloon 1 is provided with a push-pull portion 17.

In the present embodiment, based on fig. 8, the push-pull portion 17 is two cylindrical handles, and the two cylindrical handles are symmetrically arranged on the outer side wall of the conveying pipe 2. When the pressure difference between the internal pressure of the equipment and the atmospheric pressure is small, the conveying pipe 2 can be pushed into the valve 100 through manpower, and the push-pull part 17 is arranged to facilitate the force application of a maintenance worker on the conveying pipe 2; the side wall of the push-pull part 17 is provided with a second groove 18 jointed with the hand, and the second groove 18 jointed with the hand can improve the comfort degree of the operator when pushing and pulling the conveying pipe 2.

In other embodiments than the one described above, based on the illustration in fig. 6, the push-pull 17 is four cylindrical handles, which are evenly arranged around the outer side wall of the conveying pipe 2. The handles can facilitate a plurality of people to apply force to the conveying pipe 2 at the same time, the force applied by the people can be increased, and the application range of manual operation is expanded.

Further, a camera 19 arranged towards the plugging air bag 1 is installed on the outer side wall of the conveying pipe 2 close to the plugging air bag 1.

In the present embodiment, based on fig. 2 and 7, a small wireless camera 19 with a model number of Y22 is selected, and the camera 19 is disposed toward the occlusion airbag 1. When the fluid in the equipment is water or other transparent products, the addition of the camera 19 can facilitate the maintenance personnel to confirm whether the plugging air bag 1 completely cuts off the fluid in the pipeline, and prevent the dangerous condition caused by starting to maintain the valve 100 without completely cutting off the fluid.

Further, the camera 19 is mounted with an illumination device 20 disposed toward the occluding airbag 1.

In the present embodiment, based on fig. 2 and 7, the lighting device 20 is an LED lighting lamp, and the lighting lamp is disposed toward the plugging air bag 1. The valve 100 is not irradiated by a light source, and the lighting device 20 can illuminate the environment around the air bag 1, so that the camera 19 can record information conveniently.

In summary, the utility model provides a pressurized plugging device, which includes a plugging airbag 1, a delivery pipe 2, an inflation apparatus 3 and a sealing element, wherein the plugging airbag 1 is communicated with the inflation apparatus 3 through the delivery pipe 2, the delivery pipe 2 is slidably sleeved on the sealing element, the sealing element is used for sealing an opening of the valve 100 away from a pressurized side, and the delivery pipe 2 is used for carrying the plugging airbag 1 to pass through the valve 100. When the valve 100 leaks, the plugging device can maintain the valve 100 under the condition that the equipment is not decompressed; meanwhile, the plugging device is convenient to operate and low in learning cost; in addition, the plugging device has the advantages of simple structure, convenience in storage, lower production cost and higher cost performance for maintaining the valve 100 of the small pipeline or the pressure equipment.

The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a blocking device is pressed in area, its characterized in that, includes shutoff gasbag, conveyer pipe, inflation equipment and sealing member, the shutoff gasbag passes through the conveyer pipe with the inflation equipment intercommunication, conveyer pipe slip cap is located the sealing member, the sealing member is used for sealing valve to keep away from the opening of pressing the area side, the conveyer pipe is used for carrying the shutoff gasbag passes the valve.

2. The live plugging device of claim 1, wherein the opening of the valve away from the live side is provided with a connecting flange, the sealing member comprises a sealing flange matched with the connecting flange, and a first sealing gasket is clamped between the sealing flange and the connecting flange.

3. The device of claim 1, wherein the sealing element defines a first through hole, the delivery tube is disposed in the first through hole, and a sealing assembly is clamped between the delivery tube and the first through hole.

4. The device of claim 3, wherein the sealing assembly comprises a second sealing gasket and a gland, the sidewall of the first through hole has a boss, the second sealing gasket is clamped between the boss and the gland, the gland is connected to the sealing member, the gland has a second through hole, and the delivery pipe is disposed in the second through hole.

5. The live plugging device of claim 4, wherein said second sealing gasket is provided in plurality, and a plurality of said second sealing gaskets are clamped between said boss and said gland.

6. The under-pressure plugging device according to claim 5, wherein a filler for sealing is sandwiched between any two adjacent second sealing gaskets.

7. A pressurised plugging device according to claim 4, wherein a resilient sealing layer is applied to the second through hole against the outer wall of the conduit.

8. The pressurized plugging device of claim 1, further comprising a hose through which said delivery tube communicates with said inflation apparatus.

9. The live plugging device according to claim 1, further comprising a valve, wherein the end of the inflation device is communicated with the inflation device through the valve, and the inflation device is detachably connected with the valve.

10. A pressurized plugging device according to claim 1, wherein said side wall of said delivery tube away from said plugging bladder is provided with a pressure gauge for the internal pressure thereof, and said sealing member is located between said pressure gauge and said plugging bladder.