CN114754220B - Pipeline isolator and pipeline isolation method - Google Patents
Pipeline isolator and pipeline isolation method Download PDFInfo
- Publication number
- CN114754220B CN114754220B CN202110021803.5A CN202110021803A CN114754220B CN 114754220 B CN114754220 B CN 114754220B CN 202110021803 A CN202110021803 A CN 202110021803A CN 114754220 B CN114754220 B CN 114754220B
- Authority
- CN
- China
- Prior art keywords
- pipeline
- driving
- bag body
- pipe
- communicating pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow in pipes or hoses
- F16L55/12—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The application provides a pipeline isolator and a pipeline isolation method, and belongs to the technical field of pipeline maintenance. The pipe isolator includes: the device comprises a first support piece, a first bag body, a first driving piece, a second support piece, a second bag body, a second driving piece and a communicating pipe; the first driving piece sets up in the bottom of first support piece for drive first support piece removes the first position of predetermineeing in the upstream pipeline, and first utricule parcel is in the outside of first support piece, and laminating with the inner wall of upstream pipeline, the second driving piece sets up in the bottom of second support piece, is used for driving the second support piece to remove the second of downstream pipeline and predetermineeing the position, and the second utricule parcel is in the outside of second support piece, and laminating with the inner wall of downstream pipeline, and the upstream pipe section passes through communicating pipe intercommunication with the downstream pipe section. The pipeline isolator can improve the safety to the external temperature and the safety to the internal pressure, so that the safety of plugging the gas in the pipeline through the pipeline isolator is high.
Description
Technical Field
The application relates to the technical field of pipeline maintenance, in particular to a pipeline isolator and a pipeline isolation method.
Background
At present, when a gas pipeline is maintained, a fire operation such as welding is required to be performed on the pipeline, and gas in the gas pipeline is combustible gas with a certain pressure, so that in order to avoid safety accidents caused by leakage of the combustible gas out of the gas pipeline, the combustible gas in the pipeline needs to be plugged through a pipeline isolator before the fire operation is performed.
In the related art, the pipeline isolator is a butter wall, namely, the combustible gas in the pipeline is plugged through the butter wall. But the butter wall is heated and easily melts, so, when the time of fire operation is longer, the high temperature that fire operation in-process produced can be conducted to the butter wall through the pipeline, makes the butter wall take place to melt, leads to appearing the gap between butter wall and the pipeline, and the combustible gas that has certain pressure in the pipeline can escape from the gap between butter wall and the pipeline like this, and then takes place the combustible gas and leak the accident, so the security that carries out the shutoff through the combustible gas in the butter wall to the pipeline is low.
Disclosure of Invention
The embodiment of the application provides a pipeline isolator and a pipeline isolation method, which can improve the safety of blocking gas in a pipeline. The technical scheme is as follows:
In one aspect, an embodiment of the present application provides a pipe separator applied to a pipe for a fire operation to be blocked, the pipe including an upstream pipe section and a downstream pipe section; the pipe isolator includes: the device comprises a first support piece, a first bag body, a first driving piece, a second support piece, a second bag body, a second driving piece and a communicating pipe;
The first driving piece is arranged at the bottom of the first supporting piece and used for driving the first supporting piece to move to a first preset position in the upstream pipeline, the first bag body is wrapped on the outer side of the first supporting piece and is sealed and attached with the inner wall of the upstream pipeline after being inflated and used for sealing the upstream pipeline, and the first supporting piece is used for fixing the first bag body;
the second driving piece is arranged at the bottom of the second supporting piece and used for driving the second supporting piece to move to a second preset position in the downstream pipeline, the second bag body is wrapped on the outer side of the second supporting piece and is sealed and attached with the inner wall of the downstream pipeline after being inflated and used for sealing the downstream pipeline, and the second supporting piece is used for fixing the second bag body;
one end of the communicating pipe is in sealing connection with the first supporting piece, the other end of the communicating pipe is in sealing connection with the second supporting piece, and the upstream pipe section is communicated with the downstream pipe section through the communicating pipe. In one possible implementation, the first driving member includes a first driving unit and a first driving wheel;
The first driving unit is connected with the first driving wheel, and the first driving wheel is arranged at the bottom of the first supporting piece;
The first driving unit is used for driving the first driving wheel to rotate and further driving the first supporting piece to move.
In another possible implementation, the pipe isolator further includes a first communication module and a first control module;
the first communication module is in communication connection with the first control module, and the first control module is electrically connected with the first driving unit;
The first communication module is used for sending a first driving signal to the first control module, and the first control module is used for controlling the working state of the first driving unit according to the first driving signal.
In the embodiment of the application, the first driving unit can be remotely controlled through the first communication module and the first control module to drive the first driving wheel to rotate so as to drive the first supporting piece to move, so that the intellectualization of the pipeline isolator is improved.
In another possible implementation, the second driving member includes a second driving unit and a second driving wheel;
The second driving unit is connected with the second driving wheel, and the second driving wheel is arranged at the bottom of the second supporting piece;
the second driving unit is used for driving the second driving wheel to rotate so as to drive the second supporting piece to move.
In another possible implementation, the pipe isolator further includes a second communication module and a second control module;
the second communication module is in communication connection with the second control module, and the second control module is electrically connected with the second driving unit;
the second communication module is configured to send a second driving signal to the second control module, and the second control module is configured to control a working state of the second driving unit according to the second driving signal.
In the embodiment of the application, the second driving unit can be remotely controlled through the second communication module and the second control module to drive the second driving wheel to rotate so as to drive the second supporting piece to move, thereby improving the intellectualization of the pipeline isolator.
In another possible implementation, the pipe separator further comprises a pressurizing device;
the pressurizing device is communicated with the first bag body and the second bag body;
Before the pipeline carries out fire operation, the pressurizing device is used for injecting a medium into the first bag body, so that the first bag body is expanded to be in sealing fit with the inner wall of the upstream pipeline, and is used for injecting the medium into the second bag body, so that the second bag body is expanded to be in sealing fit with the inner wall of the downstream pipeline.
In another possible implementation, the pipe isolator further includes a third communication module and a third control module;
The third communication module is in communication connection with the third control module, and the third control module is electrically connected with the pressurizing device;
The third communication module is configured to send a third driving signal to the third control module, and the third control module is configured to control the working state of the pressure charging device according to the third driving signal.
In the embodiment of the application, the third communication module and the third control module can remotely control the pressurizing device to inject the medium into the first bag body, so that the blocking of an upstream pipeline is realized, and the intellectualization of the pipeline isolator is improved.
In another possible implementation manner, the communicating pipes include a first communicating pipe, a second communicating pipe, and a third communicating pipe;
the first communicating pipe passes through the first supporting piece and is communicated with the upstream pipe section, the second communicating pipe passes through the second supporting piece and is communicated with the downstream pipe section, and the first communicating pipe and the second communicating pipe are communicated through the third communicating pipe.
In the embodiment of the application, the upstream pipe section is communicated with the downstream pipe section through the communicating pipe, so that the air pressure in the upstream pipe section is the same as the air pressure in the downstream pipe section, the first bag body and the second bag body are prevented from moving due to air pressure difference, gaps are further formed between the first bag body and the inner wall of the pipeline, gas is prevented from escaping from the gaps, and the safety of the pipeline isolator on the internal pressure is improved.
In another possible implementation, the pipe isolator further includes a first pressure relief valve and a second pressure relief valve;
The first pressure relief valve is arranged on the first bag body, and the second pressure relief valve is arranged on the second bag body;
After the pipeline finishes the fire operation, the first pressure relief valve is used for discharging the medium injected in the first bag body, and the second pressure relief valve is used for discharging the medium injected in the second bag body.
In the embodiment of the application, the first pressure release valve is arranged on the first bag body, the second pressure release valve is arranged on the second bag body, and after the fire operation is finished, the medium injected in the first bag body can be discharged through the first pressure release valve, and the medium injected in the second bag body can be discharged through the second pressure release valve, so that the first bag body and the second bag body can be conveniently taken out, and the practicability of the pipeline isolator is improved.
In another aspect, an embodiment of the present application provides a method for isolating a pipeline, which is applied to the pipeline isolator in any one of the possible implementation manners, and the method includes:
the first supporting piece and the first bag body are arranged in the upstream pipeline through the first driving piece, and the second supporting piece and the second bag body are arranged in the downstream pipeline through the second driving piece;
Injecting a medium into the first bag body, expanding the first bag body until the first bag body is in sealing fit with the inner wall of the upstream pipeline to block the upstream pipeline, and injecting the medium into the second bag body, expanding the second bag body until the second bag body is in sealing fit with the inner wall of the downstream pipeline to block the downstream pipeline;
performing fire operation on the pipeline to be subjected to the fire operation, and discharging the medium in the first bag body and the medium in the second bag body after the fire operation is completed;
The first support and the first bladder are removed from the upstream conduit by the first drive and the second support and the second bladder are removed from the downstream conduit by the second drive.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
The embodiment of the application provides a pipeline isolator, on one hand, as a first bag body is in sealing fit with the inner wall of an upstream pipeline, and a second bag body is in sealing fit with the inner wall of a downstream pipeline, the upstream pipeline can be plugged through the first bag body, the downstream pipeline can be plugged through the second bag body, and the first bag body and the second bag body cannot be influenced by high temperature generated in the process of fire operation, so that the pipeline isolator cannot leak due to overhigh temperature; on the other hand, because the upstream pipe section is communicated with the downstream pipe section through the communicating pipe, gas in the upstream pipe section can be timely transmitted to the downstream pipe section through the communicating pipe, so that the pressure of the gas in the upstream pipe section is not overlarge, the first bag body is prevented from moving due to overlarge air pressure in the first pipe section, gaps are formed between the first bag body and the inner wall of a pipeline, and the gas escapes from the gaps, so that the pipeline isolator cannot leak due to overlarge air pressure. Therefore, the pipe separator is not leaked due to the excessively high temperature or the excessively high air pressure, and thus the safety of blocking the gas in the pipe by the pipe separator is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a pipe isolator according to an embodiment of the present application;
fig. 2 is a flowchart of a pipeline isolation method according to an embodiment of the present application.
Reference numerals:
11. first support piece
12. First capsule body
13. First driving member
14. Second support piece
15. Second capsule body
16. Second driving member
17. Communicating pipe
171. First communication pipe
172. Second communicating pipe
173. Third communicating pipe
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the embodiments of the present application will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a pipe separator according to an embodiment of the present application, which is applied to a pipe for blocking a fire operation, the pipe including an upstream pipe section and a downstream pipe section. Referring to fig. 1, the pipe isolator includes: a first support 11, a first bladder 12, a first driver 13, a second support 14, a second bladder 15, a second driver 16, and a communication pipe 17;
The first driving piece 13 is arranged at the bottom of the first supporting piece 11 and is used for driving the first supporting piece 11 to move to a first preset position in an upstream pipeline, the first bag body 12 is wrapped on the outer side of the first supporting piece 11 and is sealed and attached with the inner wall of the upstream pipeline after being inflated by pressurization, and is used for sealing the upstream pipeline, and the first supporting piece 11 is used for fixing the first bag body 12;
The second driving piece 16 is arranged at the bottom of the second supporting piece 14 and is used for driving the second supporting piece 14 to move to a second preset position in the downstream pipeline, the second bag body 15 is wrapped on the outer side of the second supporting piece 14 and is sealed and attached with the inner wall of the downstream pipeline after being inflated and used for sealing the downstream pipeline, and the second supporting piece 14 is used for fixing the second bag body 15;
One end of the communicating pipe 17 is connected with the first supporting member 11 in a sealing manner, the other end of the communicating pipe 17 is connected with the second supporting member 14 in a sealing manner, and the upstream pipe section and the downstream pipe section are communicated through the communicating pipe 17.
The embodiment of the application provides a pipeline isolator, on one hand, as the first bag body 12 is in sealing fit with the inner wall of an upstream pipeline, and the second bag body 15 is in sealing fit with the inner wall of a downstream pipeline, the upstream pipeline can be plugged through the first bag body 12, the downstream pipeline can be plugged through the second bag body 15, and the first bag body 12 and the second bag body 15 cannot be influenced by high temperature generated in the process of fire operation, so that the pipeline isolator cannot leak due to overhigh external temperature; on the other hand, because the upstream pipe section is communicated with the downstream pipe section through the communicating pipe 17, the gas in the upstream pipe section can be timely transmitted to the downstream pipe section through the communicating pipe 17, so that the pressure of the gas in the upstream pipe section is not overlarge, the first bag body 12 is prevented from moving due to overlarge air pressure in the first pipe section, gaps are further formed between the first bag body and the inner wall of a pipeline, and the gas escapes from the gaps, so that the pipeline isolator cannot leak due to overlarge air pressure. Therefore, the pipe separator does not leak due to the excessively high external temperature or the excessively high air pressure, and thus the safety of blocking the gas in the pipe by the pipe separator is high.
It should be noted that, in the embodiment of the present application, the state adjustment of the first bladder 12 and the second bladder 15 is completed by injecting and discharging the fluid, when the first bladder 12 and the second bladder 15 discharge the fluid, the first support 11 and the second support 14 are conveniently adjusted to the first preset position and the second preset position, after the first support 11 and the second support 14 reach the first preset position and the second preset position respectively, the internal pressures of the first bladder 12 and the second bladder 15 are controlled by the filling fluid, and as the internal pressures of the first bladder 12 and the second bladder 15 increase, a reliable annular sealing surface is formed between the first bladder 12 and the inner wall of the upstream pipeline after the first bladder 15 expands, and a reliable annular sealing surface is formed between the second bladder 15 and the inner wall of the downstream pipeline after the second bladder 15 expands. Wherein, the upstream pipeline and the downstream pipeline are determined according to the position of the fire point. The upstream pipeline is a gas pipeline before the fire point, and the downstream pipeline is a gas pipeline after the fire point.
Introduction of the first support 11: a first support 11 for fixing the first bladder 12. The first support 11 may be cylindrical in shape, the diameter of the cylinder matching the inner diameter of the pipe. The height of the cylinder may be any value between 10cm and 50cm, for example 10cm, 15cm, 20cm. The material of the first support 11 may be a metallic material, for example, copper, iron, etc., or a nonmetallic material, for example, aluminum alloy, hard steel, etc.; in the embodiment of the present application, the shape, size and material of the first support 11 are not particularly limited, and may be set and modified as needed.
It should be noted that the weld between the upstream pipe and the downstream pipe is a working area for a fire operation such as welding, and the first support 11 is provided at a first predetermined position in the upstream pipe so as to avoid the first support 11 from affecting the fire operation such as welding. Wherein the first preset position is more than 30cm away from the weld between the upstream and downstream pipes.
Introduction of the first capsule 12: the first bag body 12 wraps the outer side of the first supporting piece 11 and is in sealing fit with the inner wall of the upstream pipeline for sealing the upstream pipeline. The first bladder 12 may be filled with a liquid medium, such as water; it is also possible to fill with a gaseous medium, for example nitrogen.
In one possible implementation, the first bladder 12 is a circular bladder that wraps around the outside of the first support 11. Optionally, the material of the first bladder 12 is an elastic material, and when the first bladder 12 is filled with a medium, the first bladder 12 expands to sealingly engage the inner wall of the upstream conduit.
In the embodiment of the application, the first bag body 12 is wrapped on the outer side of the first supporting piece 11, and the volume of the first bag body 12 can be reduced through the first supporting piece 11, so that when the medium is filled into the first bag body 12, the first bag body 12 can be rapidly expanded to be in sealing fit with the inner wall of an upstream pipeline, the time for filling the medium is reduced, and the working efficiency of the pipeline isolator is further improved.
In one possible implementation, the tubing isolator further comprises a pressurizing device; the pressurizing device is communicated with the first bag body 12, and before the pipeline performs fire operation, the pressurizing device is used for injecting a medium into the first bag body 12 so that the first bag body 12 is expanded and is in sealing fit with the inner wall of the upstream pipeline. Optionally, the pressurizing device is a pneumatic pump or a stamping gas cylinder or a hydraulic pump; wherein, the punching press gas cylinder can be the nitrogen cylinder.
In one possible implementation, the pipe isolator further includes a third communication module and a third control module; the third communication module is in communication connection with the third control module, and the third control module is electrically connected with the pressurizing device; the third communication module is used for sending a third driving signal to the third control module, and the third control module is used for controlling the working state of the pressurizing device according to the third driving signal.
In the embodiment of the application, the third communication module and the third control module can remotely control the pressurizing device to inject the medium into the first bag body 12, so that the plugging of an upstream pipeline is realized, and the intellectualization of the pipeline isolator is improved.
Introduction of the first driver 13: the first driving member 13 is disposed at the bottom of the first supporting member 11 for driving the first supporting member 11 to move to a first preset position in the upstream pipeline. The first driving member 13 is connected to the bottom of the first supporting member 11 by a screw, or the first driving member 13 is connected to the bottom of the first supporting member 11 by welding.
The number of first driving members 13 may be any value between 1 and 6, alternatively, the number of first driving members 13 is 2.
In one possible implementation, the first drive 13 comprises a first drive unit and a first drive wheel; the first driving unit is connected with the first driving wheel; the first driving unit is used for driving the first driving wheel to rotate and further driving the first supporting piece 11 to move. Optionally, the first driving unit is a motor, and a driving shaft of the motor is connected with the first driving wheel and is used for driving the first driving wheel to rotate.
In one possible implementation, the pipe isolator further includes a first communication module and a first control module; the first communication module is in communication connection with the first control module, and the first control module is electrically connected with the first driving unit; the first communication module is used for sending a first driving signal to the first control module, and the first control module is used for controlling the working state of the first driving unit according to the first driving signal.
In the embodiment of the application, the first driving unit can be remotely controlled through the first communication module and the first control module to drive the first driving wheel to rotate so as to drive the first supporting piece 11 to move, so that the intellectualization of the pipeline isolator is improved.
Introduction of the second support 14: a second support 14 for fixing a second bladder 15. The second support 14 may be cylindrical in shape, the diameter of the cylinder matching the inner diameter of the pipe. The height of the cylinder may be any value between 10cm and 50cm, for example 10cm, 15cm, 20cm. The material of the second support 14 may be a metallic material, such as copper, iron, etc., or a non-metallic material, such as an aluminum alloy, hard steel, etc.; in the embodiment of the present application, the shape, size and material of the second support 14 are not particularly limited, and may be set and modified as needed.
It should be noted that, in order to avoid the second support member 14 from affecting the fire operation such as welding, the second support member 14 is disposed at a second predetermined position in the downstream pipe. Wherein the second preset position is more than 30cm away from the weld between the upstream and downstream pipes.
Introduction of the second balloon 15: the second bag body 15 wraps the outer side of the second supporting piece 14 and is in sealing fit with the inner wall of the downstream pipeline, so as to seal the downstream pipeline. The second bladder 15 may be filled with a liquid medium, such as water; it is also possible to fill with a gaseous medium, for example nitrogen.
In one possible implementation, the second bladder 15 is a circular bladder that wraps around the outside of the second support 14. Optionally, the material of the second bladder 15 is an elastic material, and when the second bladder 15 is filled with a medium, the second bladder 15 expands to be in sealing fit with the inner wall of the upstream pipeline.
In the embodiment of the application, the second bag body 15 is wrapped on the outer side of the second supporting piece 14, and the volume of the second bag body 15 can be reduced through the second supporting piece 14, so that when the medium is filled into the second bag body 15, the second bag body 15 can be rapidly expanded to be in sealing fit with the inner wall of the downstream pipeline, the time for filling the medium is reduced, and the working efficiency of the pipeline isolator is further improved.
In one possible implementation, the pressurizing device is respectively communicated with the first bag body 12 and the second bag body 15, and before the pipeline performs fire operation, the pressurizing device is used for injecting a medium into the first bag body 12 to enable the first bag body 12 to expand and be in sealing fit with the inner wall of the upstream pipeline, and is used for injecting the medium into the second bag body 15 to enable the second bag body 15 to expand and be in sealing fit with the inner wall of the downstream pipeline.
In one possible implementation, the pipe isolator further comprises a first pressure relief valve and a second pressure relief valve; the first pressure release valve is arranged on the first bag body 12, and the second pressure release valve is arranged on the second bag body 15; after the pipe completes the fire operation, the first relief valve is used for discharging the medium injected in the first capsule 12, and the second relief valve is used for discharging the medium injected in the second capsule 15.
In the embodiment of the application, since the first pressure release valve is arranged on the first bag body 12 and the second pressure release valve is arranged on the second bag body 15, after the fire operation is completed, the medium injected in the first bag body 12 can be discharged through the first pressure release valve, and the medium injected in the second bag body 15 can be discharged through the second pressure release valve, so that the first bag body 12 and the second bag body 15 can be conveniently taken out, and the practicability of the pipeline isolator is improved.
Introduction of the second driver 16: a second drive 16 is provided at the bottom of the second support 14 for driving the second support 14 to a second preset position within the downstream pipe. The second driving member 16 is connected to the bottom of the second supporting member 14 by a screw, or the second driving member 16 is connected to the bottom of the second supporting member 14 by welding.
The number of second driving members 16 may be any number between 1 and 6, alternatively the number of second driving members 16 is 2.
In one possible implementation, the second drive member 16 comprises a second drive unit and a second drive wheel; the second driving unit is connected with a second driving wheel; the second driving unit is used for driving the second driving wheel to rotate and further driving the second supporting piece 14 to move.
In one possible implementation, the pipe isolator further includes a second communication module and a second control module; the second communication module is in communication connection with the second control module, and the second control module is electrically connected with the second driving unit; the second communication module is used for sending a second driving signal to the second control module, and the second control module is used for controlling the working state of the second driving unit according to the second driving signal.
In the embodiment of the application, the second driving unit can be remotely controlled through the second communication module and the second control module to drive the second driving wheel to rotate so as to drive the second supporting piece 14 to move, so that the intellectualization of the pipeline isolator is improved.
Introduction of the communication pipe 17: one end of the communicating pipe 17 is connected with the first supporting member 11 in a sealing manner, the other end of the communicating pipe 17 is connected with the second supporting member 14 in a sealing manner, and the upstream pipe section and the downstream pipe section are communicated through the communicating pipe 17.
It should be noted that, the upstream pipeline is provided with a control valve, and the control valve is required to be closed before the pipeline is plugged by the pipeline isolator, but the control valve often has an internal leakage fault, so that the pipeline is required to be further plugged by the pipeline isolator. When the control valve fails, the air pressure in the upstream pipeline increases, and the pipeline isolator is affected. Therefore, in order to reduce the influence of the gas pressure in the upstream pipe on the pipe separator, the pipe separator in the embodiment of the present application includes the communicating pipe 17, and the gas in the upstream pipe is transferred to the downstream pipe through the communicating pipe 17.
In the embodiment of the application, since the upstream pipe section is communicated with the downstream pipe section through the communicating pipe 17, the air pressure in the upstream pipe section is the same as the air pressure in the downstream pipe section, so that the first bag body 12 and the second bag body 15 are prevented from moving due to air pressure difference, gaps are further formed between the first bag body and the inner wall of the pipeline, and the gas is prevented from escaping from the gaps, so that the safety of the pipeline isolator on the internal pressure is improved.
Note that, in order to avoid the movement of the first support 11 or the second support 14 from affecting the communication pipe 17, the communication pipe 17 may be a telescopic communication pipe 17, for example, a bellows.
In one possible implementation, communication tube 17 includes a first communication tube 171, a second communication tube 172, and a third communication tube 173; the first communication pipe 171 passes through the first support 11 and communicates with the upstream pipe section, the second communication pipe 172 passes through the second support 14 and communicates with the downstream pipe section, and the first communication pipe 171 and the second communication pipe 172 communicate through the third communication pipe 173. The third communicating tube 173 is a flexible communicating tube 17.
In the embodiment of the present application, since the third communicating tube 173 is the flexible communicating tube 17, the first communicating tube 171 and the second communicating tube 172 are communicated through the third communicating tube 173, and when the first support 11 or the second support 14 moves, the third communicating tube 173 can freely stretch and retract, so as to avoid the stress deformation of the first communicating tube 171 and the second communicating tube 172, thereby prolonging the service life of the communicating tube 17 and further improving the practicability of the pipe isolator.
Fig. 2 is a flowchart of a pipeline isolation method according to an embodiment of the present application. The pipe isolation method is applied to the pipe isolator in any one of the possible implementation manners, referring to fig. 2, and the method includes:
201. the first support 11 and the first bladder 12 are arranged in the upstream conduit by a first drive 13 and the second support 14 and the second bladder 15 are arranged in the downstream conduit by a second drive 16.
202. The medium is injected into the first bag body 12, the first bag body 12 expands until being in sealing fit with the inner wall of the upstream pipeline, the blocking of the upstream pipeline is achieved, the medium is injected into the second bag body 15, and the second bag body 15 expands until being in sealing fit with the inner wall of the downstream pipeline, and the blocking of the downstream pipeline is achieved.
203. And (3) performing fire operation on the pipeline to be subjected to fire operation, and discharging the medium in the first bag body 12 and the medium in the second bag body 15 after the fire operation is completed.
204. The first support 11 and the first capsule 12 are taken out of the upstream duct by the first drive 13 and the second support 14 and the second capsule 15 are taken out of the downstream duct by the second drive 16.
The foregoing description of the preferred embodiments of the present application is not intended to limit the application, but rather, the application is to be construed as limited to the appended claims.
Claims (6)
1. A pipe separator, characterized by being applied to the blocking of pipes to be fired, said pipes comprising an upstream pipe and a downstream pipe; the pipe isolator includes: the device comprises a pressurizing device, a first supporting piece (11), a first bag body (12), a first driving piece (13), a second supporting piece (14), a second bag body (15), a second driving piece (16), a first communicating pipe (171), a second communicating pipe (172) and a third communicating pipe (173);
The first driving piece (13) is arranged at the bottom of the first supporting piece (11) and is used for driving the first supporting piece (11) to move to a first preset position in the upstream pipeline, the first bag body (12) is wrapped on the outer side of the first supporting piece (11) and is sealed and attached with the inner wall of the upstream pipeline after being inflated by pressurization and is used for sealing the upstream pipeline, and the first supporting piece (11) is used for fixing the first bag body (12);
The first driving piece (13) comprises a first driving unit and a first driving wheel, the first driving unit is connected with the first driving wheel, and the first driving wheel is arranged at the bottom of the first supporting piece (11);
The first driving unit is used for driving the first driving wheel to rotate so as to drive the first supporting piece (11) to move;
The second driving piece (16) is arranged at the bottom of the second supporting piece (14) and is used for driving the second supporting piece (14) to move to a second preset position in the downstream pipeline, the second bag body (15) is wrapped on the outer side of the second supporting piece (14) and is sealed and attached with the inner wall of the downstream pipeline after pressurizing and expanding, the second supporting piece (14) is used for sealing the downstream pipeline, and the second bag body (15) is fixed;
the second driving member (16) comprises a second driving unit and a second driving wheel, the second driving unit is connected with the second driving wheel, and the second driving wheel is arranged at the bottom of the second supporting member (14);
the second driving unit is used for driving the second driving wheel to rotate so as to drive the second supporting piece (14) to move;
the pressurizing device is respectively communicated with the first bag body (12) and the second bag body (15);
Before the pipeline performs fire operation, the pressurizing device is used for injecting a medium into the first bag body (12), expanding the first bag body (12) to be in sealing fit with the inner wall of the upstream pipeline, and injecting the medium into the second bag body (15), expanding the second bag body (15) to be in sealing fit with the inner wall of the downstream pipeline;
The first communicating pipe (171) penetrates through the first supporting piece to be communicated with the upstream pipeline, the second communicating pipe (172) penetrates through the second supporting piece to be communicated with the downstream pipeline, the first communicating pipe (171) and the second communicating pipe (172) are communicated through the third communicating pipe (173), the third communicating pipe (173) is a flexible communicating pipe, and dynamic expansion and contraction are carried out when the first communicating pipe (171) or the second communicating pipe (172) moves.
2. The pipe isolator of claim 1, further comprising a first communication module and a first control module;
the first communication module is in communication connection with the first control module, and the first control module is electrically connected with the first driving unit;
The first communication module is used for sending a first driving signal to the first control module, and the first control module is used for controlling the working state of the first driving unit according to the first driving signal.
3. The pipe isolator of claim 1, further comprising a second communication module and a second control module;
the second communication module is in communication connection with the second control module, and the second control module is electrically connected with the second driving unit;
the second communication module is configured to send a second driving signal to the second control module, and the second control module is configured to control a working state of the second driving unit according to the second driving signal.
4. The pipe isolator of claim 1, further comprising a third communication module and a third control module;
The third communication module is in communication connection with the third control module, and the third control module is electrically connected with the pressurizing device;
The third communication module is configured to send a third driving signal to the third control module, and the third control module is configured to control the working state of the pressure charging device according to the third driving signal.
5. The pipe isolator of claim 1, further comprising a first pressure relief valve and a second pressure relief valve;
the first pressure relief valve is arranged on the first bag body (12), and the second pressure relief valve is arranged on the second bag body (15);
After the pipeline finishes the fire operation, the first pressure relief valve is used for discharging the medium injected in the first bag body (12), and the second pressure relief valve is used for discharging the medium injected in the second bag body (15).
6. A method of pipe isolation as claimed in any one of claims 1 to 5, the method comprising:
The first driving wheel is driven by a first driving unit in the first driving piece (13) to set the first supporting piece (11) and the first capsule body (12) in an upstream pipeline, and the second supporting piece (14) and the second capsule body (15) are set in a downstream pipeline by a second driving unit in the second driving piece (16);
controlling a pressurizing device to inject a medium into the first bag body (12), wherein the first bag body (12) expands until being in sealing fit with the inner wall of the upstream pipeline to realize the blocking of the upstream pipeline, and injecting the medium into the second bag body (15), and the second bag body (15) expands until being in sealing fit with the inner wall of the downstream pipeline to realize the blocking of the downstream pipeline;
Performing fire operation on the pipeline to be subjected to fire operation, and discharging the medium in the first bag body (12) and the medium in the second bag body (15) after the fire operation is completed;
-extracting said upstream duct by driving said first driving wheel by means of said first driving unit within said first driving member (13) with said first support member (11) and said first capsule (12), and extracting said downstream duct by driving said second driving wheel by means of said second driving unit within said second driving member (16) with said second support member (14) and said second capsule (15);
Wherein, first communicating pipe (171) pass first support piece with upstream pipeline intercommunication, second communicating pipe (172) pass second support piece with downstream pipeline intercommunication, first communicating pipe (171) with second communicating pipe (172) communicate through third communicating pipe (173), third communicating pipe (173) are flexible communicating pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110021803.5A CN114754220B (en) | 2021-01-08 | 2021-01-08 | Pipeline isolator and pipeline isolation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110021803.5A CN114754220B (en) | 2021-01-08 | 2021-01-08 | Pipeline isolator and pipeline isolation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114754220A CN114754220A (en) | 2022-07-15 |
| CN114754220B true CN114754220B (en) | 2024-08-27 |
Family
ID=82324633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110021803.5A Active CN114754220B (en) | 2021-01-08 | 2021-01-08 | Pipeline isolator and pipeline isolation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114754220B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205298943U (en) * | 2016-01-11 | 2016-06-08 | 天津绿清管道科技股份有限公司 | Shutoff pig |
| CN209540308U (en) * | 2019-02-20 | 2019-10-25 | 朱泽立 | A kind of multifunctional pipe closure air bag |
| CN211902054U (en) * | 2020-03-08 | 2020-11-10 | 赛斌 | Chemical pipeline replacement plugging facility |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3715645A1 (en) * | 1987-05-11 | 1988-11-24 | Manfred Vetter | PIPE SEALING PILLOW |
| GB2536019B (en) * | 2015-03-03 | 2017-09-13 | Ant Hire Solutions Llp | Safety system |
| CN109945009A (en) * | 2019-04-17 | 2019-06-28 | 海洋石油工程（青岛）有限公司 | Stainless steel tube wire bonding argon filling blocks air bag |
-
2021
- 2021-01-08 CN CN202110021803.5A patent/CN114754220B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205298943U (en) * | 2016-01-11 | 2016-06-08 | 天津绿清管道科技股份有限公司 | Shutoff pig |
| CN209540308U (en) * | 2019-02-20 | 2019-10-25 | 朱泽立 | A kind of multifunctional pipe closure air bag |
| CN211902054U (en) * | 2020-03-08 | 2020-11-10 | 赛斌 | Chemical pipeline replacement plugging facility |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114754220A (en) | 2022-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209540308U (en) | A kind of multifunctional pipe closure air bag | |
| CN104865056A (en) | Large-flow safety valve testing device | |
| KR102096966B1 (en) | Device for forcibly bursting of pressure vessel and method threrof | |
| CN210370716U (en) | Sealing structure of portal curtain type special-shaped water stopping air bag | |
| CN105697790A (en) | Air inflation axial sealing device used in vacuum environment | |
| JPS63246629A (en) | Airtightness test apparatus for joint between hollow body | |
| CN108506629A (en) | A kind of water hammer eliminates tank and water hammer removing method | |
| CN104089824B (en) | The pressure resistant testing device of major diameter Welding Structure metallic conduit | |
| CN208281693U (en) | A kind of water hammer elimination tank | |
| CN114754220B (en) | Pipeline isolator and pipeline isolation method | |
| CN104019257A (en) | Novel vacuum decompression valve | |
| CN105277379B (en) | A kind of jointed rock mass excavates transient unloading loose simulating system under different confined pressures | |
| CN213040317U (en) | A helium recovery device for air tightness detection | |
| CN102794282A (en) | Isobaric inflatable seal joint device for cleaning internal wall of tube | |
| CN112615341B (en) | A power cable sealing device | |
| CN217583666U (en) | Sewage pipes plugging device | |
| CN204649400U (en) | A kind of high-flow safety valve test device | |
| CN103233928A (en) | Energy storage supercharger | |
| EP2623615B1 (en) | Preventive maintenance method and apparatus for a structural components in a reactor pressure vessel | |
| JP5891136B2 (en) | Lining pipe construction method | |
| CN104196568A (en) | Gas pressure regulating system and method for coal and gas outburst experiment | |
| CN208487335U (en) | Pipe pressurized closure double leather cup block head | |
| CN110726031A (en) | Double-packing-cup plugging head for pipeline under pressure plugging | |
| CN115013631A (en) | Self-holding type pressurized leakage blocking equipment | |
| CN106287103B (en) | Permanent magnetism liquid capsule presses emergent plugging device and its emergent method for blocking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |