Air bag ground plugging device and method for repairing existing operating pipeline through urban pipe network

Abstract

The invention belongs to the technical field of pipeline repair, and discloses an air bag ground plugging device and method for repairing an existing operating pipeline through a town pipe network, which comprises a high-pressure cleaning vehicle and an inflation device, and further comprises a hose, one end of the hose is connected with the high-pressure cleaning vehicle, and a nozzle is arranged at the other end of the hose and used for spraying water flow distributed on the outer side of the hose; the sprayed water flow direction is from the nozzle to the hose; the number of the guide rods is multiple, the two ends of each guide rod can be detachably connected with one end of the other guide rod, a pushing pipe is fixed to one end of any guide rod, and the pushing pipe is perpendicular to the guide rods; the number of the air bags is multiple, one end of each air bag is provided with an inflation head, and each air bag is connected with a pull rope; the problem that an existing operation pipeline air bag plugging operation environment is changed from underground to ground is solved, underground limited space operation and underwater operation are avoided, space limitation is broken through, and the safety risk of pipe network repairing air bag plugging is greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline repair, and particularly relates to a ground plugging device and method for an airbag of an existing operating pipeline in an urban pipe network. Background Art

[0002] Drainage pipes and other municipal pipelines are known as the "lifelines" of cities. However, with the development of urban construction, drainage pipes in China are about to face serious problems such as aging and frequent accidents. At present, with the acceleration of the urban renewal pace, the projects for local repair and renewal of existing operating drainage pipes are increasing day by day. When repairing existing operating drainage pipes, an important working link is the underground airbag plugging of the existing operating pipeline to create the working conditions for pipe network repair. The underground airbag plugging operation involves both underground confined space operation and underwater operation, with characteristics such as high professional requirements, high safety risks, and small working space. Frequent serious casualties and property losses occur due to improper operation during the operation process. Therefore, in the prior art, most of the plugging operations require manual entry into the well chamber for operation, which is not only limited by the narrow working space but also has relatively high safety risks. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a ground plugging device and method for an airbag of an existing operating pipeline in an urban pipe network, which solves the problems that in the prior art, most of the plugging operations require manual entry into the well chamber for operation, which is not only limited by the narrow working space but also has relatively high safety risks.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A ground plugging device for an airbag of an existing operating pipeline in an urban pipe network includes a high-pressure cleaning vehicle and an inflation device, and further includes:

[0006] A hose, one end of the hose is connected to the high-pressure cleaning vehicle, and the other end of the hose is provided with a nozzle for spraying water flowing outside the hose, and the spraying direction of the water is from the nozzle towards the hose;

[0007] Guide rods, the number of guide rods is multiple, both ends of the guide rods can be detachably connected to one end of another guide rod, and one end of any one of the guide rods is fixedly provided with a push tube, and the push tube is vertically placed with the guide rod;

[0008] Airbags, the number of airbags is multiple, one end of each airbag is provided with an inflation head, and a pull rope is connected to each airbag;

[0009] Air pipes, the number of air pipes is multiple, one end of the air pipes is used for detachably connecting to the output end of the inflation device, the other end of the air pipes is used for detachably connecting to the inflation head, and a valve is provided at the end of the air pipe close to the inflation device;

[0010] The nozzle is in the shape of a hollow shell. One end of the nozzle is fixedly connected to a hose, and the hose is connected to the inside of the nozzle in a through manner. A plurality of water outlet holes are formed in the peripheral wall of the nozzle near the hose end, and the plurality of water outlet holes are evenly distributed in a ring shape around the central axis of the nozzle;

[0011] When the hose and the nozzle are coaxially arranged, the distances between the central axes of the water outlet holes and the central axis of the hose gradually increase from the end near the nozzle to the end near the hose;

[0012] Scales are marked on the guide rods, and the air bags are provided with multiple specifications suitable for drain pipes with different inner diameters.

[0013] A method for ground plugging of an existing operating pipeline air bag in an urban pipe network repair. The existing operating drain pipe in the well chamber is plugged on the ground by using an urban pipe network repair existing operating pipeline air bag ground plugging device, including the following steps:

[0014] Select any well chamber as the operation inspection well;

[0015] Determine the drain pipe section to be repaired as the operation pipe section;

[0016] Determine each plugging position to be plugged in the drain pipe according to the operation pipe section;

[0017] Set the plugging sequence for plugging each plugging position;

[0018] Use the plugging device to plug the plugging positions, and each plugging position is plugged in sequence according to the set plugging sequence;

[0019] Determine the drain pipe section to be repaired as the operation pipe section, specifically including the following steps:

[0020] Set the well chamber adjacent to the upstream end of the drain pipe in the operation inspection well as the upstream inspection well;

[0021] Set the well chamber adjacent to the downstream end of the drain pipe in the operation inspection well as the downstream inspection well;

[0022] The part of the drain pipe between the operation inspection well and the downstream inspection well is the operation pipe section;

[0023] Determine each plugging position to be plugged in the drain pipe according to the operation pipe section, specifically including the following steps:

[0024] The number of plugging positions is three. The three plugging positions are sequentially set as the first plugging position, the second plugging position, and the third plugging position from the upstream to the downstream of the drain pipe;

[0025] Set the part of the drain pipe between the operation inspection well and the upstream inspection well as the first plugging pipe section. The end of the first plugging pipe section near the upstream inspection well is the first plugging position, and the end of the first plugging pipe section near the operation inspection well is the second plugging position;

[0026] The part of the drainage pipe located in the downstream inspection well far away from the working inspection well is set as the second plugging pipe section, and the second plugging pipe section close to the working inspection well is the third plugging position;

[0027] The blocking sequence is to block the first blocking position, the second blocking position and the third blocking position in turn from the upstream to the downstream of the drainage pipe;

[0028] The blocking position is blocked by using a blocking device, which specifically includes the following steps:

[0029] Measure the inner diameter of the drainage pipe at the blocking position through the guide rod and the push pipe;

[0030] Select an air bag of corresponding size according to the inner diameter of the drainage pipe at the blocking position;

[0031] The airbag is deflated and temporarily bound with a binding piece, and the binding piece can be expanded when the airbag is inflated;

[0032] Connect the air tube to the air bag, and tie the drawstring away from the air bag end and the nozzle;

[0033] The nozzle is pushed into the well chamber through the guide rod and the push pipe, and moved to the plugging position;

[0034] Water is injected into the hose by a high-pressure cleaning vehicle, and the nozzle drives the airbag to move to the blocking position through the pull rope;

[0035] Pull the hose, nozzle and pull rope out of the well chamber away from the airbag end, and the airbag remains in the blocked position;

[0036] Untie the drawstring away from the airbag end and the nozzle;

[0037] Connect the end of the air tube away from the airbag to the output end of the inflation device, and inflate the airbag through the inflation device;

[0038] After the inflation is completed, the air pipe is disassembled and separated from the output end of the inflation device;

[0039] Complete the blocking of the corresponding blocking position;

[0040] Ties include transparent tape or string.

[0041] Beneficial effects of the present invention:

[0042] Through the cooperation of the guide rod, the pushing pipe, the airbag, the hose, the nozzle, the pulling rope, the high-pressure cleaning vehicle, the inflation equipment and the air pipe, this device can quickly push the airbag to the plugging position and inflate and plug it through the inflation equipment, enabling the operator to complete the plugging operation of the existing operating drainage pipe on the ground without the need for manual entry into the well chamber, significantly reducing the risk of the operators. Especially in deep wells or complex environments, it can effectively ensure the safety of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0044] Figure 1 It is a schematic diagram before plugging at each plugging position of the present invention;

[0045] Figure 2 It is a schematic diagram of the working state of dredging at the first plugging position of the present invention;

[0046] Figure 3 It is a schematic diagram of the working state of sending the airbag into the upstream inspection well of the present invention;

[0047] Figure 4 It is a schematic diagram of the working state of the airbag entering the first plugging position of the present invention;

[0048] Figure 5 It is a schematic diagram after the plugging at the first plugging position of the present invention is completed;

[0049] Figure 6 It is a schematic diagram after all plugging positions of the present invention are plugged;

[0050] Figure 7 It is a partial structural schematic diagram at the high-pressure cleaning vehicle of the present invention;

[0051] Figure 8 It is a partial structural schematic diagram at the airbag of the present invention;

[0052] Figure 9 It is a partial structural schematic diagram at the airbag and the binding member of the present invention;

[0053] Figure 10 It is a schematic diagram of the water flow spraying direction of the water sprayed from the nozzle of the present invention;

[0054] Figure 11 It is a schematic diagram of the guide rod structure of the present invention;

[0055] Figure 12It is a schematic diagram of the guide rod and the jacking pipe structure of the present invention.

[0056] In the figure, 1 is the upstream inspection well; 2 is the ground; 3 is the operation inspection well; 4 is the downstream inspection well; 5 is the second plugging pipe section; 6 is the operation well section; 7 is the first plugging pipe section; 8 is the high-pressure cleaning vehicle; 9 is the guide rod; 10 is the airbag; 11 is the pull rope; 12 is the water flow spraying direction; 81 is the hose; 82 is the nozzle; 91 is the internal thread; 92 is the external thread; 93 is the scale; 94 is the jacking pipe; 101 is the inflation head; 102 is the binding piece. Detailed implementation manners

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0058] As Figures 1 to 12 shown, a ground plugging device for an airbag to repair an existing operating pipeline in an urban pipe network includes a high-pressure cleaning vehicle 8 and an inflation device, and further includes:

[0059] A hose 81, one end of the hose 81 is connected to the high-pressure cleaning vehicle 8, and the other end of the hose 81 is provided with a nozzle 82. The nozzle 82 is used to spray water flow distributed outside the hose 81, and the sprayed water flow direction is from the nozzle 82 towards the hose 81;

[0060] A guide rod 9, the number of guide rods 9 is multiple, both ends of the guide rod 9 can be detachably connected to one end of another guide rod 9, and one end of any guide rod 9 is fixedly connected to a jacking pipe 94, and the jacking pipe 94 is vertically placed with respect to the guide rod 9;

[0061] An airbag 10, the number of airbags 10 is multiple, one end of each airbag 10 is provided with an inflation head 101, and a pull rope 11 is connected to each airbag 10;

[0062] A trachea, the number of tracheas is multiple, one end of the trachea is used to be detachably connected to the output end of the inflation device, the other end of the trachea is used to be detachably connected to the inflation head 101, and a valve is provided at the end of the trachea close to the inflation device;

[0063] The water flow spraying direction 12 of the water flow sprayed by the nozzle 82 is as Figure 10 shown;

[0064] Preferably, the guide rod 9 is made of aluminum alloy material, and the length of a single guide rod 9 can be set to 0.5 m or 1 m or 1.5 m;

[0065] Preferably, one end of the guide rod 9 is provided with an external thread 92, and the other end of the guide rod 9 is provided with an internal thread 91. The external thread 92 end of any guide rod 9 can be threadedly connected to the internal thread 91 end of another guide rod 9;

[0066] Preferably, a groove for placing the hose 81 is formed on the pushing pipe 94, so as to facilitate the pushing pipe 94 to push the hose 81 and the nozzle 82 into the drain pipe;

[0067] Preferably, the air pipe can be made of materials such as rubber. It should be noted that the air pipe and the inflation device are not shown in the figure.

[0068] Preferably, the pull rope 11 can be selected as a nylon rope;

[0069] Preferably, the inflation device can adopt an air pump.

[0070] The nozzle 82 is in the shape of a hollow shell. One end of the nozzle 82 is fixedly connected to the hose 81. The hose 81 is connected to the inside of the nozzle in a through manner. A plurality of water outlet holes are formed on the peripheral wall of the nozzle 82 near the hose 81 end. The plurality of water outlet holes are evenly distributed in a ring around the central axis of the nozzle 82;

[0071] When the hose 81 and the nozzle 82 are coaxially arranged, the distance between the central axis of the water outlet hole and the central axis of the hose 81 gradually increases from the end near the nozzle 82 to the end near the hose 81;

[0072] To control the water flow direction of the water sprayed by the nozzle 82, so that the reaction force generated by the sprayed water flow can push the hose 81 and the nozzle 82 into the drain pipe.

[0073] Scales 93 are marked on the guide rod 9. The airbag 10 is provided with multiple specifications suitable for drain pipes with different inner diameters.

[0074] A method for ground plugging of an airbag for repairing an existing operating pipeline in an urban pipe network uses an airbag ground plugging device for repairing an existing operating pipeline in an urban pipe network to plug an existing operating drain pipe in a well chamber on the ground 2, including the following steps:

[0075] Select any well chamber as the operation inspection well 3;

[0076] Determine the drain pipe section to be repaired as the operation pipe section 6;

[0077] Determine each plugging position in the drain pipe that needs to be plugged according to the operation pipe section 6;

[0078] Set the plugging sequence for plugging each plugging position;

[0079] Use the plugging device to plug the plugging positions, and each plugging position is plugged in sequence according to the set plugging sequence;

[0080] Determine that the drain pipe section to be repaired is the working pipe section 6, and the specific steps are as follows:

[0081] Set one well chamber adjacent to the upstream end of the drain pipe near the working inspection well 3 as the upstream inspection well 1;

[0082] Set one well chamber adjacent to the downstream end of the drain pipe near the working inspection well 3 as the downstream inspection well 4;

[0083] The part of the drain pipe between the working inspection well 3 and the downstream inspection well 4 is the working pipe section 6;

[0084] Determine each plugging position in the drain pipe according to the working pipe section 6, and the specific steps are as follows:

[0085] The number of plugging positions is three. From the upstream to the downstream of the drain pipe, the three plugging positions are set as the first plugging position, the second plugging position, and the third plugging position in sequence;

[0086] Set the part of the drain pipe between the working inspection well 3 and the upstream inspection well 1 as the first plugging pipe section 7. The end of the first plugging pipe section 7 close to the upstream inspection well 1 is the first plugging position, and the end of the first plugging pipe section 7 close to the working inspection well 3 is the second plugging position;

[0087] Set the part of the drain pipe of the downstream inspection well 4 far from the working inspection well 3 as the second plugging pipe section 5. The end of the second plugging pipe section 5 close to the working inspection well 3 is the third plugging position;

[0088] Since water continuously flows from the upstream to the downstream of the drain pipe, therefore, in this application, two plugging positions are set for the part of the working inspection well 3 close to the upstream, which improves the stability of plugging upstream of the working inspection well 3 and improves the safety of subsequent repair operations.

[0089] The plugging sequence is to plug the first plugging position, the second plugging position, and the third plugging position in sequence from the upstream to the downstream of the drain pipe;

[0090] After plugging the first plugging position first, the water on the downstream side of the first plugging position in the drain pipe can automatically drain downstream, which is not convenient for subsequent plugging operations of the second plugging position and the third plugging position, and at the same time, it can also reduce the workload of subsequent pumping operations inside the working inspection well 3.

[0091] Use a plugging device to plug the plugging position, and the specific steps are as follows:

[0092] Measure the inner diameter of the drain pipe at the plugging position through the guide rod 9 and the jacking pipe 94;

[0093] Select the airbag 10 of the corresponding size according to the inner diameter of the drain pipe at the plugging position;

[0094] The airbag 10 is deflated, and the deflated airbag 10 is temporarily bound by a binding member 102, and the binding member 102 can be expanded by the airbag 10 when the airbag 10 is inflated;

[0095] Connect the trachea to the airbag 10, and tie the end of the drawstring 11 away from the airbag 10 to the nozzle 82;

[0096] The nozzle 82 is pushed into the well chamber through the guide rod 9 and the push pipe 94, and moved to the blocking position;

[0097] Water is injected into the hose 81 by the high-pressure cleaning vehicle 8, and the nozzle 82 drives the airbag 10 to move to the blocking position through the pull rope 11;

[0098] The hose 81, the nozzle 82 and the pull rope 11 are pulled out of the well chamber away from the end of the airbag 10, and the airbag 10 is retained in the blocking position;

[0099] Untie the tie between the end of the drawstring 11 away from the airbag 10 and the nozzle 82;

[0100] Connect the end of the trachea away from the airbag 10 to the output end of the inflation device, and inflate the airbag 10 through the inflation device;

[0101] After the inflation is completed, the air pipe is disassembled and separated from the output end of the inflation device;

[0102] Complete the blocking of the corresponding blocking position;

[0103] In this application, blocking the first blocking position is taken as an example to supplement the process in the above operation steps;

[0104] The provision of the push tube 94 can be used to assist the air bag 10 and the nozzle 82 to extend into the drain pipe;

[0105] It should be noted that before measuring the inner diameter of the drain pipe, the silt accumulated at the blocked position of the drain pipe can be cleaned up through the hose 81 and the nozzle 82. When in use, the guide rod 9 connected to the jacking pipe 94 is used as the initial end. According to the depth of the well chamber, multiple guide rods 9 can be spliced ​​in sequence. The guide rod 9 is manually held on the ground 2 to send the nozzle 82 and the hose 81 into the well chamber. The nozzle 82 and the hose 81 can be pushed into the drain pipe first, and water is continuously injected into the hose 81 by the high-pressure cleaning vehicle 8. The water flow sprayed from the nozzle 82 is used to preliminarily dredge the drain pipe to prevent silt accumulation from affecting the measurement of the inner diameter of the drain pipe. After the dredging is completed, the nozzle 82 and the hose 81 are pulled out. The dredging working state is as follows: Figure 2 As shown;

[0106] When measuring the inner diameter of the drain pipe, the detailed operation steps are as follows: first extend the push tube 94 into the drain pipe, so that the lower end of the push tube 94 contacts the lower end of the inner peripheral wall of the drain pipe, and record the scale on the guide rod 9 that is flush with the ground 2 at this time; then lift the guide rod 9 upward to make the upper end of the push tube 94 contact the upper end of the inner peripheral wall of the drain pipe, and record the scale on the guide rod 9 that is flush with the ground 2 at this time, the scale difference between the front and rear sides is set to S, the thickness between the upper and lower ends of the drain pipe is L, and the radius of the drain pipe is set to R, then 2R=S+L, so as to measure the inner diameter of the drain pipe, and then the air bag 10 of the appropriate size can be selected according to the measured inner diameter of the drain pipe;

[0107] like Figures 3 - 4 As shown, after temporarily tying the airbag 10, tying the pull rope 11 and the nozzle 82, and connecting the air pipe, the nozzle 82 and the hose 81 are sent into the drain pipe at the first blocking position through the guide rod 9 and the push tube 94 again;

[0108] The high-pressure cleaning vehicle 8 continuously injects water into the hose 81, and after being guided by the hose 81, it is sprayed out from the nozzle 82 to form a high-pressure water flow. Under the reaction force of the water flow, the nozzle 82 and the hose 81 are pushed to continuously penetrate into the drain pipe. When the nozzle 82 and the hose 81 drive the pull rope 11 to straighten, the nozzle 82 and the hose 81 continue to move along the drain pipe and pull the airbag 10 into the first blocking position, and the high-pressure cleaning vehicle 8 stops injecting water;

[0109] Pull out the hose 81, and move the hose 81, the nozzle 82 and the pull rope 11 away from the end of the airbag 10 out of the well chamber. During this process, the airbag 10 can be preliminarily inflated, and the guide rod 9 and the push tube 94 can block and limit the airbag 10, so that the airbag 10 remains in the blocked position during the process of pulling out the hose 81;

[0110] It should be noted that the length of the pull rope 11 in the present application can satisfy that one end of the pull rope 11 is located on the ground 2, and the end of the pull rope 11 connected to the airbag 10 is located in the blocking position;

[0111] Subsequently, the airbag 10 is inflated, and the airbag 10 expands and stretches the binding piece 102. When the airbag 10 is inflated and pressurized to the required pressure, the pressurization is stopped, the valve is closed, and the air pipe is disassembled and separated from the output end of the inflation device, thus completing the current blocking operation of the corresponding blocking position.

[0112] The binding member 102 includes a transparent tape or a thin rope; preferably, when using a transparent tape, the transparent tape should be a weakly sticky tape; when using a thin rope, a rope with a breaking strength lower than the expansion force of the airbag 10 when inflated should be selected.

[0113] After the plugging operation is completed at each plugging position, all the water in the operation inspection well 3 is pumped out, and the staff can enter the operation inspection well 3 to repair the operation pipe section 6;

[0114] Preferably, pressure detectors are provided on the air pipes.

[0115] During the trenchless repair operation of the urban pipe network, observe and record the air pressure value of the airbag 10 every 1 hour. When the airbag 10 has an accidental pressure relief or there is an obvious sign of a rising water level in the operation inspection well 3, the limited-space operation in the well should be immediately suspended, the cause should be analyzed, and potential safety hazards should be eliminated.

[0116] After the repair is completed, first open the valve to relieve the pressure of the airbag 10. After the pressure relief is completed, the airbag 10 can be pulled out of the drain pipe through the pull rope 11.

[0117] When the present invention performs the plugging operation on the drain pipe, manual operation on the ground 2 is sufficient, and there is no need for the operator to enter the well chamber for the plugging operation, which improves the safety of the plugging operation.

[0118] In the description of this specification, the descriptions with reference to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0119] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. An airbag ground plugging device for repairing existing operating pipelines in urban pipe networks, comprising a high-pressure cleaning vehicle (8) and an inflation device, characterized in that: Also includes: A hose (81), one end of the hose (81) is connected to the high-pressure cleaning vehicle (8), and the other end of the hose (81) is provided with a nozzle (82), the nozzle (82) is used to spray water distributed outside the hose (81), and the direction of the sprayed water flow is from the nozzle (82) toward the hose (81); A guide rod (9), wherein the number of the guide rods (9) is plural, both ends of the guide rod (9) can be detachably connected to one end of another guide rod (9), a push tube (94) is fixed to one end of any guide rod (9), and the push tube (94) is placed vertically to the guide rod (9); An airbag (10), wherein the number of the airbags (10) is multiple, an inflation head (101) is provided at one end of each airbag (10), and a drawstring (11) is connected to each airbag (10); The air pipe is a plurality of air pipes, one end of the air pipe is used for detachably connecting to the output end of the inflation device, the other end of the air pipe is used for detachably connecting to the inflation head (101), and a valve is provided at the end of the air pipe close to the inflation device.

2. The airbag ground plugging device for repairing existing running pipelines in urban pipe networks according to claim 1 is characterized in that: The nozzle (82) is in the shape of a shell with a hollow interior. One end of the nozzle (82) is fixedly connected to the hose (81). The hose (81) is connected to the interior of the nozzle. A plurality of water outlet holes are formed on the peripheral wall of the nozzle (82) near the end of the hose (81). The plurality of water outlet holes are evenly distributed in a ring shape around the central axis of the nozzle (82). When the hose (81) and the nozzle (82) are placed coaxially, the distance between the central axis of the water outlet and the central axis of the hose (81) gradually increases from the end close to the nozzle (82) to the end close to the hose (81).

3. The airbag ground plugging device for repairing existing running pipelines in urban pipe networks according to claim 2 is characterized in that: The guide rods (9) are all marked with scales (93), and the airbags (10) are provided with various specifications suitable for drainage pipes with different inner diameters.

4. A method for ground plugging of existing running pipes by airbags for repairing urban pipe networks, using the ground plugging device for repairing existing running pipes by airbags as claimed in any one of claims 1 to 3 to plug the existing running drainage pipes in the well chamber on the ground (2), characterized in that: The following steps are involved: Select any well chamber as the operation inspection well (3); Determine the drainage pipe section that needs to be repaired as the working pipe section (6); Determining various blocking locations in the drainage pipe that need to be blocked according to the operating pipe section (6); Setting the blocking order for each blocking position; The blocking position is blocked by a blocking device, and each blocking position is blocked in turn according to the set blocking order.

5. The method for ground plugging of existing running pipelines with airbags for repairing urban pipeline networks according to claim 4 is characterized in that: Determining the drainage pipe section to be repaired as the working pipe section (6) specifically includes the following steps: A well chamber adjacent to the upstream end of the drainage pipe in the operation inspection well (3) is set as an upstream inspection well (1); A well chamber adjacent to the downstream end of the drainage pipe of the operation inspection well (3) is set as a downstream inspection well (4); The portion of the drainage pipe located between the operation inspection well (3) and the downstream inspection well (4) is the operation pipe section (6).

6. The method for ground plugging of existing running pipelines with airbags for repairing urban pipeline networks according to claim 5 is characterized in that: Determining each blocking position in the drainage pipe that needs to be blocked according to the operation pipe section (6) specifically includes the following steps: There are three blocking positions, which are set as a first blocking position, a second blocking position and a third blocking position in sequence from the upstream to the downstream of the drainage pipe; The portion of the drainage pipe between the operation inspection well (3) and the upstream inspection well (1) is set as the first plugging pipe section (7), the end of the first plugging pipe section (7) close to the upstream inspection well (1) is the first plugging position, and the end of the first plugging pipe section (7) close to the operation inspection well (3) is the second plugging position; The portion of the drainage pipe located in the downstream inspection well (4) away from the working inspection well (3) is set as the second plugging pipe section (5), and the end of the second plugging pipe section (5) close to the working inspection well (3) is the third plugging position.

7. The method for ground plugging of existing running pipelines with airbags for repairing urban pipeline networks according to claim 6 is characterized in that: The blocking sequence is to block the first blocking position, the second blocking position and the third blocking position in turn from the upstream to the downstream of the drainage pipe.

8. The method for ground plugging of existing running pipelines with airbags for repairing urban pipeline networks according to claim 7 is characterized in that: The blocking position is blocked by using a blocking device, which specifically includes the following steps: The inner diameter of the drainage pipe at the blocking position is measured by means of a guide rod (9) and a push pipe (94); Selecting an air bag (10) of a corresponding size according to the inner diameter of the drainage pipe at the blocking position; The airbag (10) is deflated, and a binding piece (102) is used to temporarily bind the deflated airbag (10), and the binding piece (102) can be expanded by the airbag (10) when the airbag (10) is inflated; Connect the trachea to the air bag (10), and tie the end of the drawstring (11) away from the air bag (10) to the nozzle (82); The nozzle (82) is pushed into the well chamber through the guide rod (9) and the push pipe (94), and moved to the blocking position; Water is injected into the hose (81) through a high-pressure cleaning vehicle (8), and the nozzle (82) drives the airbag (10) to move to a blocking position through a pull rope (11); The hose (81), the nozzle (82) and the pull rope (11) are pulled out of the well chamber away from the end of the airbag (10), and the airbag (10) is retained in the blocking position; Untie the tie between the end of the drawstring (11) away from the airbag (10) and the nozzle (82); Connecting the end of the trachea away from the airbag (10) to the output end of the inflation device, and inflating the airbag (10) through the inflation device; After the inflation is completed, the air pipe is disassembled and separated from the output end of the inflation device; Complete the blocking of the corresponding blocking position.

9. The method for ground plugging of existing running pipelines with airbags for repairing urban pipeline networks according to claim 8 is characterized in that: The binding member (102) comprises a transparent tape or a string.

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